Runner and gating design handbook: tools for successful injection molding
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| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Munich
Hanser Publishers
[2019]
Cincinnati Hanser Publications [2019] |
| Edition: | 3rd edition |
| Subjects: | |
| Online Access: | Inhaltsverzeichnis |
| Physical Description: | XX, 450 Seiten Illustrationen, Diagramme 25 cm |
| ISBN: | 9781569905906 1569905908 |
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MARC
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| 020 | |a 9781569905906 |c : EUR 179.99 (DE) (freier Preis), EUR 185.10 (AT) (freier Preis) |9 978-1-56990-590-6 | ||
| 020 | |a 1569905908 |9 1-56990-590-8 | ||
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| 100 | 1 | |a Beaumont, John P. |d 1952- |e Verfasser |0 (DE-588)124071295 |4 aut | |
| 245 | 1 | 0 | |a Runner and gating design handbook |b tools for successful injection molding |c John P. Beaumont |
| 250 | |a 3rd edition | ||
| 264 | 1 | |a Munich |b Hanser Publishers |c [2019] | |
| 264 | 1 | |a Cincinnati |b Hanser Publications |c [2019] | |
| 264 | 4 | |c © 2019 | |
| 300 | |a XX, 450 Seiten |b Illustrationen, Diagramme |c 25 cm | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 650 | 0 | 7 | |a Heißkanalverfahren |0 (DE-588)4730959-3 |2 gnd |9 rswk-swf |
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| 650 | 0 | 7 | |a Werkstoffgerechtes Konstruieren |0 (DE-588)4233887-6 |2 gnd |9 rswk-swf |
| 650 | 0 | 7 | |a Spritzgießwerkzeug |0 (DE-588)4056563-4 |2 gnd |9 rswk-swf |
| 653 | |a Hardback | ||
| 653 | |a )Paper over boards | ||
| 653 | |a Anguss | ||
| 653 | |a Gates | ||
| 653 | |a Heißkanaltechnik | ||
| 653 | |a Hot runner | ||
| 653 | |a Injection molding | ||
| 653 | |a Kunststofftechnik | ||
| 653 | |a Melt Flipper | ||
| 653 | |a Mold design | ||
| 653 | |a Mold making | ||
| 653 | |a Molds | ||
| 653 | |a Plastics | ||
| 653 | |a Runners | ||
| 653 | |a Spritzgießen | ||
| 653 | |a Sprue | ||
| 653 | |a Werkzeugbau | ||
| 653 | |a FBKTSPRI: Spritzgießen | ||
| 653 | |a FBKTWZBA: Werkzeugbau | ||
| 653 | |a PLAS2019 | ||
| 653 | |a 00600 | ||
| 653 | |a 85590 | ||
| 653 | |a 55900 | ||
| 653 | |a 1687: Hardcover, Softcover / Technik/Chemische Technik | ||
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| 689 | 0 | |5 DE-604 | |
| 689 | 1 | 0 | |a Spritzgießwerkzeug |0 (DE-588)4056563-4 |D s |
| 689 | 1 | 1 | |a Heißkanalverfahren |0 (DE-588)4730959-3 |D s |
| 689 | 1 | |5 DE-604 | |
| 710 | 2 | |a Hanser Publications |0 (DE-588)1064064051 |4 pbl | |
| 776 | 0 | 8 | |i Erscheint auch als |n Online-Ausgabe |z 9781569905913 |
| 780 | 0 | 0 | |i Vorangegangen ist |z 9783446407657 |
| 856 | 4 | 2 | |m DNB Datenaustausch |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=031597180&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
| 999 | |a oai:aleph.bib-bvb.de:BVB01-031597180 | ||
Record in the Search Index
| _version_ | 1804180617727836160 |
|---|---|
| adam_text | CONTENTS
PREFACE
.............................................................................................................
V
ACKNOWLEDGMENTS
...........................................................................................
IX
1
OVERVIEW
OF
RUNNERS,
GATES,
AND
GATE
POSITIONING
..........................
1
1.1
PRIMARY
PARTING
PLANE
RUNNERS
.......................................................................
1
1.2
SUB
RUNNERS
......................................................................................................
2
1.2.1
COLD
SUB
RUNNERS
.................................................................................
2
1.2.2
HOT
SUB
RUNNERS
.................................................................................
4
1.3
HYBRID
SUB-RUNNER
AND
PARTING
LINE
RUNNER
.................................................
5
1.4
GATE
DESIGNS
......................................................................................................
5
2
RHEOLOGY
AND
MELT
FLOW
IN
AN
INJECTION
MOLD
.....................................
7
2.1
LAMINAR
VS.
TURBULENT
FLOW
...............................................................................
8
2.2
FOUNTAIN
FLOW
....................................................................................................
10
2.3
FACTORS
AFFECTING
VISCOSITY
...............................................................................
10
2.3.1
COMMON
VISCOSITY
MODELS
.................................................................
12
2.3.2
NON-NEWTONIAN
FLUIDS
.........................................................................
14
2.3.3
TEMPERATURE
.........................................................................................
17
2.3.4
PRESSURE
................................................................................................
17
2.4
MELT
COMPRESSIBILITY
.........................................................................................
18
2.5
MELT
FLOW
CHARACTERIZATION
...............................................................................
19
2.5.1
MELT
FLOW
INDEX
...................................................................................
19
2.5.2
CAPILLARY
RHEOMETERS
...........................................................................
20
2.5.3
NOZZLE
RHEOMETERS
...............................................................................
25
2.6
MELT
FLOW
IN
A
MOLD
..........................................................................................
26
2.6.1
SPIRAL
FLOW
MOLDS
.................................................................................
27
2.6.2
INJECTION
MOLDING
SIMULATION
.............................................................
28
2.6.3
MOLDOMETER
..........................................................................................
30
3
FILLING
AND
PACKING
EFFECTS
ON
MATERIAL
AND
MOLDED
PART
................
33
3.1
PROCESS
EFFECTS
ON
MATERIAL
FLOW
CHARACTERISTICS
............................................
33
3.1.1
MELT
THERMAL
BALANCE
-
CONDUCTIVE
HEAT
LOSS
VS.
SHEAR
HEATING
..
33
3.1.2
DEVELOPMENT
OF
A
FROZEN
BOUNDARY
LAYER
..........................................
36
3.2
FACTORS
AFFECTING
PLASTIC
MATERIAL
DEGRADATION
................................................
42
3.2.1
EXCESSIVE
SHEAR
...................................................................................
42
3.2.2
EXCESSIVE
TEMPERATURE
........................................................................
44
3.3
EFFECTS
OF
MOLD
FILL
RATE
ON
FILL
PRESSURE
.........................................................
46
3.4
POST
FILLING
OR
PACKING
PHASE
..............................................................................
47
3.4.1
THERMAL
SHRINKAGE
AS
PLASTIC
COOLS
....................................................
47
3.4.2
COMPENSATION
FLOW
TO
OFFSET
VOLUMETRIC
SHRINKAGE
........................
48
3.4.3
PRESSURE
DISTRIBUTION
DURING
THE
POST
FILLING
PHASE
........................
49
3.4.4
GATE
FREEZE-OFF
.....................................................................................
50
3.5
MELT
FLOW
EFFECTS
ON
MATERIAL
AND
MOLDED
PARTS
..............................................
51
3.5.1
SHRINKAGE
.............................................................................................
51
3.5.1.1
VOLUMETRIC
SHRINKAGE
..........................................................
52
3.5.1.2
ORIENTATION-INDUCED
SHRINKAGE
............................................
54
3.5.2
DEVELOPMENT
OF
RESIDUAL
STRESSES
AND
WARPAGE
................................
58
3.5.2.1
WARPAGE
AND
RESIDUAL
STRESS
FROM
SIDE-TO-SIDE
SHRINKAGE
VARIATIONS
............................................................
58
3.5.2.2
WARPAGE
AND
RESIDUAL
STRESS
FROM
GLOBAL/REGIONAL
SHRINKAGE
VARIATIONS
............................................................
59
3.5.2.3
WARPAGE
AND
RESIDUAL
STRESS
FROM
ORIENTATION-INDUCED
SHRINKAGE
VARIATIONS
............................................................
60
3.5.3
PHYSICAL
PROPERTIES
AS
EFFECTED
BY
ORIENTATION
..................................
60
3.6
ANNEALING
A
MOLDED
PART
...................................................................................
61
3.7
SUMMARY
.............................................................................................................
61
4
GATE
POSITIONING
AND
MOLDING
STRATEGIES
...........................................
65
4.1
GATE
POSITIONING
CONSIDERATIONS
.......................................................................
65
4.2
DESIGN
AND
PROCESS
STRATEGIES
FOR
INJECTION
MOLDING
......................................
67
4.2.1
MAINTAIN
UNIFORM
WALL
THICKNESSES
IN
A
PART
..................................
67
4.2.2
USE
COMMON
DESIGN
GUIDELINES
FOR
INJECTION
MOLDED
PLASTIC
PARTS
WITH
CAUTION
..................................................................
70
4.2.3
AVOID
FLOWING
FROM
THIN
TO
THICK
......................................................
71
4.2.4
ESTABLISH
A
SIMPLE
STRATEGIC
FLOW
PATTERN
WITHIN
A
CAVITY
...............
72
4.2.5
AVOID
PICTURE
FRAMING
.........................................................................
76
4.2.6
INTEGRAL
HINGES
.....................................................................................
78
4.2.7
BALANCED
FILLING
THROUGHOUT
A
MOLD
...................................................
81
4.2.7.1
GATING
POSITION(S)
WITHIN
A
CAVITY
......................................
82
4.2.7.2 MULTI-CAVITY
MOLDS
...............................................................
86
4.2.8
PROVIDE
FOR
UNIFORM
TEMPERATURES
(MOLD
AND
MELT)
..........................
89
4.2.9
ELIMINATE,
STRATEGICALLY
PLACE,
OR
CONDITION
WELDS
............................
90
4.2.10
AVOIDING
FLOW
HESITATION
.....................................................................
91
4.2.11
MANAGING
FRICTIONAL
HEATING
OF
THE
MELT
...........................................
93
4.2.12
MINIMIZE
RUNNER
VOLUME
IN
COLD
RUNNERS
.......................................
93
4.2.13
AVOID
EXCESSIVE
SHEAR
RATES
...............................................................
94
4.2.14
AVOID
EXCESSIVE,
AND
PROVIDE
FOR
UNIFORM
SHEAR
STRESSES
................
96
5
THE
MELT
DELIVERY
SYSTEM
.....................................................................
99
5.1
RUNNER
DESIGN
FUNDAMENTALS
...........................................................................
99
5.2
OVERVIEW
OF
RUNNER/MELT
DELIVERY
SYSTEM
.....................................................
100
5.2.1
MACHINE
NOZZLE
...................................................................................
101
5.2.1.1
NOZZLE
FILTER
.........................................................................
102
5.2.1.2
STATIC
MIXERS
.........................................................................
103
5.2.2
SPRUE
....................................................................................................
103
5.2.3
RUNNER
..................................................................................................
103
5.2.4
GATE
......................................................................................................
104
5.3
MELT
FLOW
THROUGH
THE
MELT
DELIVERY
SYSTEM
.................................................
104
5.3.1
MELT
PREPARATION
-
THE
INJECTION
MOLDING
MACHINE
..........................
104
5.3.1.1
PRESSURE
DEVELOPMENT
FROM
A
MOLDING
MACHINE
..............
105
5.3.1.2
FLOW
THROUGH
A
RUNNER
CHANNEL
..........................................
106
5.3.2
EFFECT
OF
TEMPERATURE
ON
FLOW
...........................................................
107
5.3.2.1
MELT
TEMPERATURE
.................................................................
107
5.3.2.2
MOLD
TEMPERATURE
...............................................................
109
5.3.3
COLD
VS.
HOT
RUNNERS
...........................................................................
110
5.3.4
PRESSURE
DROP
THROUGH
THE
MELT
DELIVERY
SYSTEM
(NOZZLE
VS.
SPRUE
VS.
RUNNER
VS.
GATE
VS.
PART
FORMING
CAVITY)
....
110
5.4
USE
OF
MOLD
FILLING
ANALYSIS
.............................................................................
ILL
5.5
RUNNER
CROSS-SECTIONAL
SIZE
AND
SHAPE
...........................................................
113
5.5.1
THE
EFFICIENT
FLOW
CHANNEL
.................................................................
113
5.5.2
PRESSURE
DEVELOPMENT
IN
THE
RUNNER
...............................................
113
5.5.2.1
FLOW
THROUGH
A
HOT
RUNNER
VS.
A
COLD
RUNNER
..................
117
5.5.3
RUNNER
EFFECT
ON
CYCLE
TIME
...............................................................
117
5.5.3.1
COLD
RUNNER
AND
SPRUE
COOLING
TIME
................................
117
5.5.3.2
HOT
RUNNER
...........................................................................
118
5.5.4
CONSTANT
DIAMETER
VS.
GRADUATED
DIAMETER
RUNNERS
........................
118
5.6
DESIGNING
RUNNERS
FOR
SHEAR-
AND
THERMALLY-SENSITIVE
MATERIALS
................
121
5.7
RUNNER
LAYOUTS
...................................................................................................
122
5.7.1
GEOMETRICAL
BALANCED
RUNNERS
............................................................
122
5.7.2
NON-GEOMETRICALLY
BALANCED
RUNNERS
................................................
125
5.7.3
FISHBONE
RUNNERS
VS.
GEOMETRICALLY
BALANCED
RUNNERS
...................
125
5.7.3.1
FLOW
BALANCE
RATIO
................................................................
127
5.7.3.2
MELT
VARIATION
IN
UNBALANCED
MOLDS
..................................
128
5.7.3.3
ARTIFICIAL
BALANCING
OF
RUNNERS
............................................
128
5.7.3.4
DO
THE
ARTIFICIALLY
BALANCED
RUNNERS
REDUCE
RUNNER
VOLUME?
....................................................................
131
5.7.4
FAMILY
MOLDS
.........................................................................................
135
6
FILLING,
MELT,
AND
PRODUCT
VARIATIONS
DEVELOPED
IN
MULTI-CAVITY
MOLDS
.................................................................................
137
6.1
SOURCES
OF
PRODUCT
VARIATION
IN
MULTI-CAVITY
MOLDS
OF
MOLD
FILLING
IMBALANCES
...........................................................................................................
138
6.1.1
PRODUCT
VARIATIONS
RESULTING
FROM
THE
RUNNER
DESIGN
....................
138
6.1.2
PRODUCT
VARIATIONS
RESULTING
FROM
NON-RUNNER
LAYOUT
ISSUES
........
140
6.2
IMBALANCE
EFFECTS
ON
PROCESS,
PRODUCT,
AND
PRODUCTIVITY
................................
144
6.2.1
ARTIFICIAL
BALANCING
OF
RUNNERS
............................................................
148
6.3
SHEAR-INDUCED
MELT/MOLDING
VARIATIONS
FROM
GEOMETRICALLY
BALANCED
RUNNERS
...............................................................................................................
150
6.3.1
DEVELOPMENT
AND
STRATIFICATION
OF
MELT
VARIATIONS
ACROSS
A
RUNNER
CHANNEL
...................................................................................
150
6.3.2
LAMINATE
SEPARATION
IN
BRANCHING
RUNNERS
CAUSING
CAVITY-TO-CAVITY
PRODUCT
VARIATIONS
....................................................
152
6.3.3
SHEAR-INDUCED
MELT
IMBALANCES
IN
STACK
MOLDS
................................
157
6.3.4
DEVELOPMENT
OF
INTRA-CAVITY
VARIATIONS
AND
INFLUENCE
ON
RESIDUAL
STRESSES
AND
WARPAGE
..........................................................
158
6.3.4.1
WARPAGE
..................................................................................
164
6.3.4.2
CORE
DEFLECTION
.....................................................................
166
6.3.4.3
EFFECT
ON
CONCENTRIC
PARTS
(GEARS,
FANS,
AND
OTHERS)
........
167
6.3.5
ALTERNATIVE
THEORIES
OF
THE
CAUSE
OF
MOLD
FILLING
IMBALANCES
........
168
6.3.5.1
COOLING
VARIATIONS
................................................................
169
6.3.5.2
PLATE
DEFLECTION
.....................................................................
169
6.5.5.3
CORNER
EFFECT
OF
BRANCHING
RUNNERS
....................................
170
6.3.5.4
MELT
PRESSURE
AS
THE
CAUSE
OF
FILLING
IMBALANCE
..............
172
6.4
RUNNER
LAYOUTS
...................
172
6.4.1
IDENTIFICATION
OF
VARIOUS
FLOW
GROUPS
IN
COMMON
GEOMETRICALLY
BALANCED
RUNNERS
...............................................................................
173
6.4.2
APPARENT
GEOMETRICALLY
BALANCED
RUNNER
LAYOUTS
..........................
175
6.5
EFFECT
OF
SHEAR-INDUCED
MELT
VARIATIONS
ON
TWO-STAGE
INJECTION
PROCESSES
..
176
6.5.1
GAS
ASSIST
INJECTION
MOLDING
.............................................................
176
6.5.2
GO-INJECTION
MOLDING
...........................................................................
179
6.5.3
STRUCTURAL
AND
MICROCELLULAR
FOAM
MOLDING
......................................
181
6.6
THE
COST
OF
MELT
IMBALANCES
.............................................................................
182
7
MANAGING
SHEAR-INDUCED
MELT
VARIATIONS
FOR
SUCCESSFUL
MOLDING
...............................................................................
185
7.1
STATIC
MIXERS
......................................................................................................
186
7.2
ARTIFICIAL
BALANCING
.............................................................................................
188
7.2.1
VARYING
SIZES
OF
BRANCHING
RUNNERS
OR
GATES
TO
ACHIEVE
A
FILLING
BALANCE
.....................................................................................
188
7.2.2
VARYING
TEMPERATURES
TO
CONTROL
FILLING
BALANCE
..............................
189
7.3
MELT
ROTATION
TECHNOLOGY
...................................................................................
190
7.3.1
MELT
ROTATION
TECHNOLOGY
IN
HOT
RUNNER
MOLDS
................................
197
7.3.2
MELT ROTATION
TECHNOLOGY
IN
COLD
RUNNER
MOLDS
..............................
198
7.3.3
MELT ROTATION
FOR
INTRA-CAVITY
IMBALANCES
.........................................
199
7.3.4
MULTI-AXIS
MELT
SYMMETRY
.................................................................
200
7.3.5
IN-MOLD
ADJUSTABLE
RHEOLOGICAL
CONTROL
(IMARC*)
..........................
202
7.3.5.1
3D
MOLDING
...........................................................................
203
7.4 MELT
ROTATION
FOR
CONTROLLING
TWO
STAGE
INJECTION
PROCESSES
..........................
207
7.5
CONTROLLING
WARPAGE
THROUGH
MELT
ROTATION
TECHNOLOGY
.................................
209
7.5.1
DEVELOPMENT
OF
WARPAGE
POTENTIAL
...................................................
211
7.5.2
CONTROLLED
WARPAGE
THROUGH
MELT
ROTATION
TECHNOLOGY
..................
214
7.5.3
NEW
APPLICATION
FOR
3D
MOLDING
.........................................................
216
7.6
MELTFLIPPER
MELT
ROTATION
TECHNOLOGIES
.........................................................
217
7.6.1
IMPORTANT
MELTFLIPPER
PATENT
ISSUES
.................................................
217
7.6.2
MELT
ROTATION
IN
COLD
RUNNER
MOLDS
.................................................
218
7.6.3
MELT
ROTATION
TECHNOLOGY
IN
HOT
RUNNER
MOLDS
................................
220
7.6.4
MULTI-AXIS
MELT
SYMMETRY
.................................................................
220
7.6.5
IN-MOLD
ADJUSTABLE
RHEOLOGICAL
CONTROL
(IMARC*)
..........................
222
8
COLD
RUNNER
MOLDS
................................................................................
225
8.1
SPRUE
..................................................................................................................
226
8.1.1
COLD
SPRUE
............................................................................................
227
8.1.2
HOT
SPRUE
............................................................................................
232
8.2
THE
COLD
RUNNER
.......................
233
8.2.1
IMPORTANT
MACHINING
CONSIDERATIONS
................................................
235
8.2.2
SIZING
OF
RUNNERS
.................................................................................
235
8.2.3
VENTING
.................................................................................................
236
8.2.4
RUNNER
EJECTION
...................................................................................
237
8.2.4.1
SPRUE
PULLER
..........................................................................
237
5.2.4.2
SECONDARY
SPRUE/COLD
DROP
................................................
238
5.2.4.3
RUNNER
...................................................................................
238
8.2.5
COLD
SLUG
WELLS
.....................................................................................
239
8.3
RUNNERS
FOR
THREE-PLATE
COLD
RUNNER
MOLDS
....................................................
240
8.4 GATE
DESIGNS
244
8.4.1
SPRUE
GATE
8.4.2
COMMON
EDGE
GATE
245
246
8.4.3
FAN
GATE
.................................................................................................
247
8.4.4
FILM
GATE
OR
FLASH
GATE
........................................................................
248
8.4.5
RING
GATE
...............................................................................................
249
8.4.6
DIAPHRAGM
(DISK)
GATE
.......................................................................
250
8.4.7
TUNNEL
GATE
...........................................................................................
252
8.4.8
CASHEW
OR
BANANA
GATE
.......................................................................
254
8.4.9
JUMP
GATE
.............................................................................................
255
8.4.10
PIN
POINT
GATE
.......................................................................................
256
8.4.11
CHISEL
GATE
257
8.4.12
OVERFLOW
GATE
257
8.5
EFFECTS
OF
GATE
DIAMETER
IN
MULTI-CAVITY
MOLDS
................................................
258
8.5.1
STUDY
1
...................................................................................................
258
8.5.2
STUDY
2
...................................................................................................
259
8.5.3
MEASURING
TOLERANCES
.........................................................................
262
9
HOT
RUNNER
MOLDS
...................................................................................
267
9.1
OVERVIEW
.............................................................................................................
267
9.1.1
ADVANTAGES
AND
DISADVANTAGES
OF
HOT
RUNNER
SYSTEMS
..................
268
9.1.1.1
ADVANTAGES
OF
HOT
RUNNERS
..................................................
268
9.1.1.2
DISADVANTAGES
OF
HOT
RUNNERS
............................................
270
9.1.1.3
SUMMARY
OF
ATTRIBUTES
OF
DIFFERENT
RUNNER
SYSTEMS
........
271
9.2
OVERVIEW
OF
MULTI-CAVITY
HOT
RUNNER
SYSTEMS
(CONTRASTING
SYSTEMS)
..........
272
9.2.1
EXTERNALLY
HEATED
MANIFOLD
AND
DROPS/NOZZLES
................................
273
9.2.2
EXTERNALLY
HEATED
MANIFOLD
WITH
INTERNALLY
HEATED
DROPS
..............
274
9.2.3
INTERNALLY
HEATED
MANIFOLD
AND
INTERNALLY
HEATED
DROPS
................
275
9.2.4
INSULATED
MANIFOLD
AND
DROPS
.............................................................
276
9.3
STACK
MOLDS
.........................................................................................................
278
10
HOT
RUNNER
FLOW
CHANNEL
DESIGN
.........................................................
281
10.1
LAYOUT
FOR
BALANCED
MOLDING
.............................................................................
282
10.2
CROSS-SECTIONAL
SHAPE
.......................................................................................
284
10.3
CORNERS
.................................................................................................................
284
10.3.1
DRILLED
RUNNER
CHANNELS
.....................................................................
285
10.3.2
MACHINED
LAMINATE
PLATE
RUNNER
CHANNELS
......................................
287
10.4
EFFECT
OF
DIAMETER
...............................................................................................
287
10.4.1
PRESSURE
.................................................................................................
287
10.4.2
SHOT
CONTROL
.........................................................................................
290
10.4.3
COLOR
CHANGE
.........................................................................................
291
10.4.4
MATERIAL
CHANGE
...................................................................................
294
11
HOT
RUNNER
DROPS,
NOZZLES,
AND
GATES
................................................
295
11.1
HOT
DROPS
.............................................................................................................
296
11.1.1
EXTERNALLY
HEATED
HOT
DROPS
(NOZZLES)
..............................................
297
11.1.2
INTERNALLY
HEATED
HOT
DROPS
...............................................................
298
11.1.3
HEAT
CONDUCTING
NOZZLES
.....................................................................
299
11.2
RESTRICTIVE/PIN
POINT
GATES
...............................................................................
300
11.3
GATE
DESIGN
CONSIDERATIONS
...............................................................................
302
11.3.1
GATE
FREEZE-OFF
.....................................................................................
302
11.3.2
STRINGING/DROOLING
...............................................................................
303
11.3.3
PACKING
.................................................................................................
304
11.3.4
NOZZLE
TIPS
FOR
HOT
RUNNER
THERMAL
GATES
.......................................
305
11.3.4.1
PORTED
TIPS
...........................................................................
306
11.3.4.2
TORPEDO-STYLE
TIPS
...............................................................
308
11.3.5
MECHANICAL
VALVE
GATES
.......................................................................
309
11.3.5.1
CONSIDERATION
OF
VALVE
PIN
FLOW
RESTRICTIONS
....................
312
11.3.5.2
SEQUENTIAL
VALVE
GATES
..........................................................
313
11.3.5.3
VALVE
PIN
MOVEMENT
CONTROL
FOR
SEQUENTIAL
GATING
..........
315
11.3.6
THERMAL
SHUT-OFF
GATES
.......................................................................
321
11.3.7
HOT
EDGE
GATES
.....................................................................................
322
11.3.8
MULTI-TIP
NOZZLES
.................................................................................
323
11.4
SPECIAL
NOZZLE
ARRANGEMENT
.............................................................................
324
12
THERMAL
ISSUES
OF
HOT
RUNNER
SYSTEMS
.............................................
327
12.1
HEATING
..................................................................................................................
327
12.1.1
COIL
(CABLE)
HEATERS
.............................................................................
328
12.1.2
BAND
HEATERS
.........................................................................................
328
12.1.3
TUBULAR
HEATERS
...................................................................................
329
12.1.4
CARTRIDGE
HEATERS
.................................................................................
330
12.1.5
HEAT
PIPE
TECHNOLOGY
...........................................................................
330
12.2
HEATER
TEMPERATURE
CONTROL
.............................................................................
331
12.2.1
THERMOCOUPLES
.....................................................................................
331
12.2.2
TEMPERATURE
CONTROLLERS
.....................................................................
332
12.3
POWER
REQUIREMENTS
..........................................................................................
334
12.4
THERMAL
ISOLATION
OF
THE
HOT
RUNNER
...............................................................
335
12.5
GATE
TEMPERATURE
CONTROL
.................................................................................
338
12.5.1
GATE
HEATING
.........................................................................................
340
12.5.2
GATE
COOLING
.........................................................................................
340
13
THE
MECHANICS
AND
OPERATION
OF
HOT
RUNNERS
................................
341
13.1
ASSEMBLY
AND
LEAKAGE
ISSUES
...........................................................................
341
13.1.1
SYSTEM
DESIGN
.....................................................................................
342
13.1.2
HOT
RUNNER
SYSTEM
MACHINING
AND
ASSEMBLY
..................................
347
13.2
MOLD
AND
MACHINE
DISTORTIONS
...........................................................................
353
13.3
STARTUP
PROCEDURES
.............................................................................................
355
13.4
COLOR
AND
MATERIAL
CHANGES
...............................................................................
355
13.5
GATES
....................................................................................................................
356
13.5.1
VESTIGE
...................................................................................................
356
13.5.2
CLOG
.......................................................................................................
356
13.5.3
WEAR
.......................................................................................................
357
13.6
*
MAINTENANCE
.......................................................................................................
357
14
PROCESS
OF
DESIGNING
AND
SELECTING
A
RUNNER
SYSTEM
(GATE
AND
RUNNER)
-
A
SUMMARY
.........................................................
359
14.1
NUMBER
OF
GATES
.................................................................................................
359
14.2
GATING
POSITION
ON
A
PART
....................................................................................
359
14.2.1
COSMETIC
....................................................................................
359
14.2.2
EFFECT
ON
SHRINKAGE,
WARP,
AND
RESIDUAL
STRESS
................................
360
14.2.2.1
ORIENTATION
...........................................................................
360
14.2.2.2
VOLUMETRIC
SHRINKAGE
(REGIONAL)
........................................
360
14.2.2.3
UNBALANCED
FILLING
...............................................................
361
14.2.3
STRUCTURAL
ISSUES
..................................................................................
361
14.2.3.1
GATE
STRESS
.............................................................................
361
14.2.3.2
FLOW
ORIENTATION
...................................................................
361
14.2.4
GATING
INTO
RESTRICTED,
OR
OTHERWISE
DIFFICULT
TO
REACH
LOCATIONS
...
362
14.3
CAVITY
POSITIONING
...............................................................................................
362
14.4
MATERIAL
...............................................................................................................
362
14.5
JETTING
...................................................................................................................
362
14.6
THICK
VS.
THIN
REGIONS
OF
THE
PART
...................................................................
363
14.6.1
VOLUMETRIC
SHRINKAGE
.........................................................................
363
14.6.2
HESITATION
.............................................................................................
363
14.7
NUMBER
OF
CAVITIES
.............................................................................................
363
14.8
PRODUCTION
VOLUME
.............................................................................................
363
14.9
PRECISION
MOLDING
(PRECISION
SIZE,
SHAPE,
WEIGHT,
MECHANICAL
PROPERTIES,
AND
CONSISTENCY)
.................................................................................................
364
14.10
COLOR
CHANGES
...................................................................................................
364
14.11
MATERIAL
CHANGE
.................................................................................................
365
14.12
REGRIND
OF
RUNNERS
.............................................................................................
365
14.13
PART
THICKNESS
.....................................................................................................
365
14.13.1
THIN
PART
...............................................................................................
365
14.13.2
THICK
PART
.............................................................................................
366
14.14
PART
SIZE
...............................................................................................................
366
14.15
LABOR
SKILL
LEVEL
.................................................................................................
366
14.16
POST
MOLD
HANDLING
.............................................................................................
367
14.17
PARF/GATE
STRESS
ISSUES
.....................................................................................
367
14.18
HOT
AND
COLD
RUNNER
COMBINATIONS
.................................................................
367
14.19 TWO-PHASE
INJECTION
PROCESSES
.........................................................................
367
15
TROUBLESHOOTING
.....................................................................................
369
15.1
FLOW
GROUPING
MOLD
DIAGNOSTICS
.....................................................................
369
15.1.1
SHEAR-INDUCED
FLOW
IMBALANCE
DEVELOPED
IN
A
GEOMETRICALLY
BALANCED
RUNNER
.................................................................................
370
15.1.2
STEEL
VARIATIONS
IN
THE
MOLD
...............................................................
371
15.1.3
COOLING
EFFECTS
.....................................................................................
371
15.1.4
HOT
RUNNER
SYSTEMS
.........................
371
15.1.5
SUMMARY
OF
TEST
DATA
.........................................................................
371
15.1.6
FLOW
GROUPING:
METHOD
OF
APPLICATION
..............................................
372
15.2
INJECTION
MOLDING
TROUBLESHOOTING
GUIDELINES
FOR
SCIENTIFIC
INJECTION
MOLDING
...............................................................................................................
375
15.3
INJECTION
MOLDING
PROCESS
DEVELOPMENT
.........................................................
418
15.3.1
THE
MOLDING
PROCESS
............................................................................
418
15.3.1.1
MOLD
COOLING
.........................................................................
419
15.3.1.2
CLAMP
UNIT
-
INITIAL
SETTINGS
...............................................
420
15.3.1.3
INJECTION
UNIT
-
INITIAL
SETTINGS
............................................
422
15.3.1.4
FILL
TIME
SCAN
-
EVALUATING
FIRST
STAGE
FLOW
RATE
............
424
15.3.1.5
PACK
SCANS
-
EVALUATING
SECOND
STAGE
PACK
PRESSURE
AND
PACK
TIME
.......................................................................
430
15.3.1.6
EVALUATE
CUSHION,
COOLING
TIME,
AND
CYCLE
TIME
..............
434
15.3.2
PROCESS
MONITORING
AND
PROCESS
DOCUMENTATION
..............................
436
15.4
LIST
OF
AMORPHOUS
AND
SEMI-CRYSTALLINE
RESINS
.............................................
440
INDEX
...................................................................................................................
443
|
| any_adam_object | 1 |
| author | Beaumont, John P. 1952- |
| author_GND | (DE-588)124071295 |
| author_facet | Beaumont, John P. 1952- |
| author_role | aut |
| author_sort | Beaumont, John P. 1952- |
| author_variant | j p b jp jpb |
| building | Verbundindex |
| bvnumber | BV046218456 |
| classification_rvk | ZM 8160 |
| classification_tum | CIT 735f |
| ctrlnum | (OCoLC)1119745881 (DE-599)DNB1194486258 |
| discipline | Chemie / Pharmazie Werkstoffwissenschaften Chemie-Ingenieurwesen Werkstoffwissenschaften / Fertigungstechnik |
| edition | 3rd edition |
| format | Book |
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| id | DE-604.BV046218456 |
| illustrated | Illustrated |
| indexdate | 2024-07-10T08:38:37Z |
| institution | BVB |
| institution_GND | (DE-588)1064064051 |
| isbn | 9781569905906 1569905908 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-031597180 |
| oclc_num | 1119745881 |
| open_access_boolean | |
| owner | DE-91G DE-BY-TUM DE-210 DE-12 DE-1050 DE-703 DE-83 |
| owner_facet | DE-91G DE-BY-TUM DE-210 DE-12 DE-1050 DE-703 DE-83 |
| physical | XX, 450 Seiten Illustrationen, Diagramme 25 cm |
| publishDate | 2019 |
| publishDateSearch | 2019 |
| publishDateSort | 2019 |
| publisher | Hanser Publishers Hanser Publications |
| record_format | marc |
| spelling | Beaumont, John P. 1952- Verfasser (DE-588)124071295 aut Runner and gating design handbook tools for successful injection molding John P. Beaumont 3rd edition Munich Hanser Publishers [2019] Cincinnati Hanser Publications [2019] © 2019 XX, 450 Seiten Illustrationen, Diagramme 25 cm txt rdacontent n rdamedia nc rdacarrier Heißkanalverfahren (DE-588)4730959-3 gnd rswk-swf Anguss (DE-588)4226633-6 gnd rswk-swf Werkstoffgerechtes Konstruieren (DE-588)4233887-6 gnd rswk-swf Spritzgießwerkzeug (DE-588)4056563-4 gnd rswk-swf Hardback )Paper over boards Anguss Gates Heißkanaltechnik Hot runner Injection molding Kunststofftechnik Melt Flipper Mold design Mold making Molds Plastics Runners Spritzgießen Sprue Werkzeugbau FBKTSPRI: Spritzgießen FBKTWZBA: Werkzeugbau PLAS2019 00600 85590 55900 1687: Hardcover, Softcover / Technik/Chemische Technik Spritzgießwerkzeug (DE-588)4056563-4 s Anguss (DE-588)4226633-6 s Werkstoffgerechtes Konstruieren (DE-588)4233887-6 s DE-604 Heißkanalverfahren (DE-588)4730959-3 s Hanser Publications (DE-588)1064064051 pbl Erscheint auch als Online-Ausgabe 9781569905913 Vorangegangen ist 9783446407657 DNB Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=031597180&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
| spellingShingle | Beaumont, John P. 1952- Runner and gating design handbook tools for successful injection molding Heißkanalverfahren (DE-588)4730959-3 gnd Anguss (DE-588)4226633-6 gnd Werkstoffgerechtes Konstruieren (DE-588)4233887-6 gnd Spritzgießwerkzeug (DE-588)4056563-4 gnd |
| subject_GND | (DE-588)4730959-3 (DE-588)4226633-6 (DE-588)4233887-6 (DE-588)4056563-4 |
| title | Runner and gating design handbook tools for successful injection molding |
| title_auth | Runner and gating design handbook tools for successful injection molding |
| title_exact_search | Runner and gating design handbook tools for successful injection molding |
| title_full | Runner and gating design handbook tools for successful injection molding John P. Beaumont |
| title_fullStr | Runner and gating design handbook tools for successful injection molding John P. Beaumont |
| title_full_unstemmed | Runner and gating design handbook tools for successful injection molding John P. Beaumont |
| title_short | Runner and gating design handbook |
| title_sort | runner and gating design handbook tools for successful injection molding |
| title_sub | tools for successful injection molding |
| topic | Heißkanalverfahren (DE-588)4730959-3 gnd Anguss (DE-588)4226633-6 gnd Werkstoffgerechtes Konstruieren (DE-588)4233887-6 gnd Spritzgießwerkzeug (DE-588)4056563-4 gnd |
| topic_facet | Heißkanalverfahren Anguss Werkstoffgerechtes Konstruieren Spritzgießwerkzeug |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=031597180&sequence=000001&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| work_keys_str_mv | AT beaumontjohnp runnerandgatingdesignhandbooktoolsforsuccessfulinjectionmolding AT hanserpublications runnerandgatingdesignhandbooktoolsforsuccessfulinjectionmolding |