CN107053626A - A kind of bumper shock absorber support fretting map Shooting Technique - Google Patents
A kind of bumper shock absorber support fretting map Shooting Technique Download PDFInfo
- Publication number
- CN107053626A CN107053626A CN201710265298.2A CN201710265298A CN107053626A CN 107053626 A CN107053626 A CN 107053626A CN 201710265298 A CN201710265298 A CN 201710265298A CN 107053626 A CN107053626 A CN 107053626A
- Authority
- CN
- China
- Prior art keywords
- injection
- shock absorber
- raw material
- bumper shock
- shooting technique
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76498—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
- B29C2945/76—Measuring, controlling or regulating
- B29C2945/76494—Controlled parameter
- B29C2945/76595—Velocity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a kind of bumper shock absorber support fretting map Shooting Technique, comprise the following steps：a：Configure raw material：Appropriate sodium acid carbonate and citric acid are added in PP/PE granular materials；b：Heating and melting is carried out to raw material：The raw material configured in the step a is put into the charging basket of injection machine, raw material enters heater through injection machine charging basket, under the shear action of screw in injection molding machine, with the sodium acid carbonate and the citric acid micro- reaction occurs for PP/PE particles, makes occur bubble inside the PP/PE of molten condition；c：Add into mixture：Added appropriate into mixture in the step b in the PP/PE mixed liquors of molten condition, the bubble produced by making in the step b is evenly mixed in PP/PE mixed liquors.Beneficial effect is：By adding various dispensings, make the microbubble of material internal formation even inflation, and the rapid crystallization in shaping, so as to reduce molding cycle, improve production efficiency, and the weight of product is mitigated significantly.
Description
Technical field
The present invention relates to auto parts machinery manufacture field, and in particular to a kind of bumper shock absorber support fretting map injection
Technique.
Background technology
Bumper damper bottom bracket is formed by plastic injection, and tradition uses common PP+E/P-TD20 (boards
Number P3GM04J-35BK, material standard TSM5608G-6) material is molded, and because product wall thickness is thicker after injection, causes material
In a short time can not cooled and solidified completely, so as to cause life cycle of the product long, low production efficiency, and such a material injection into
During type, because shrinkage factor of the material in not cooling completely is larger, cause the dwell time long, product weight weight.
The content of the invention
The purpose of the present invention is that there is provided one kind in order to solve the problem of shock absorber support generation is present in background technology
Bumper shock absorber support fretting map Shooting Technique.
The present invention is achieved through the following technical solutions above-mentioned purpose：
A kind of bumper shock absorber support fretting map Shooting Technique, comprises the following steps：
a：Configure raw material：Appropriate sodium acid carbonate and citric acid are added in PP/PE granular materials；
b：Heating and melting is carried out to raw material：The raw material configured in the step a is put into the charging basket of injection machine, raw material is through note
Molding machine charging basket enters heater, under the shear action of screw in injection molding machine, PP/PE particles and the sodium acid carbonate and the lemon
Micro- reaction occurs for acid, makes occur bubble inside the PP/PE of molten condition；
c：Add into mixture：In the PP/PE mixed liquors of molten condition, it will make described in the appropriate step b into mixture addition
Bubble produced by step b is evenly mixed in PP/PE mixed liquors；
d：Add lubricant：Appropriate lubricant is added in the mixed liquor of the step c before injection；
e：Injection parameters are set：The injection pressure of injection machine is lifted into 10%, injection speed lifting 35%；
f：Storing：The mixed solution that the step d is formed is stored up at the spiral conveying tube feeding injection-moulding nozzle through injection machine
Material；
g：Injection mold is preheated：Injection mold is heated to 80 DEG C；
h：Injection：The step f storings are completed, while the mould in the step g is heated to after design temperature, open injection machine
Introduction valve, the mixed liquor of the step d is injected into through injection-moulding nozzle in the die cavity of mould；
i：Pressurize, cooling：The mixed liquor of the step d to being expelled in mold cavity carries out pressurize, makes its Slow cooling；
k：Die sinking：After the completion of the step i pressurizes, you can workpiece is taken out in die sinking.
In the present embodiment, the sodium acid carbonate dosage added in the step a is 5%-8%, the lemon of addition
The dosage of acid is 5%-10%.
In the present embodiment, the heating-up temperature melted in the step b to raw material is 280 DEG C.
In the present embodiment, added in the step c it is described into mixture be foam stabiliser, main component is polyalcohol
Any of class, sulfonated aliphatic alcohol, alpha-sulfonated fatty acid, and additive capacity is 0.5%-2.5%.
In the present embodiment, the lubricant added in the step d be silicone powder or Tissuemat E, wherein, use
Additive capacity during silicone powder is 0.5%-2%, the use of additive capacity during Tissuemat E is 2%-4%.
In the present embodiment, the injection pressure of injection machine is 90-100MPa in the step e, and injection speed is 24-
27cm/s。
In the present embodiment, unidirectional spring needle is installed at the nozzle of the injection machine used in the step f.
In the present embodiment, the pressurize in the step i uses constant pressure pressurize, and dwell pressure is the 60MPa of injection pressure,
Dwell time is 3min.
Beneficial effect is：By adding various dispensings, make the microbubble of material internal formation even inflation, and in shaping
Middle rapid crystallization, so as to reduce molding cycle, improves production efficiency, and the weight of product is mitigated significantly.
Embodiment
The invention will be further described below：
A kind of bumper shock absorber support fretting map Shooting Technique, comprises the following steps：
a：Configure raw material：Appropriate sodium acid carbonate and citric acid are added in PP/PE granular materials；
b：Heating and melting is carried out to raw material：The raw material configured in the step a is put into the charging basket of injection machine, raw material is through note
Molding machine charging basket enters heater, under the shear action of screw in injection molding machine, PP/PE particles and the sodium acid carbonate and the lemon
Micro- reaction occurs for acid, makes occur bubble inside the PP/PE of molten condition；
c：Add into mixture：In the PP/PE mixed liquors of molten condition, it will make described in the appropriate step b into mixture addition
Bubble produced by step b is evenly mixed in PP/PE mixed liquors；
d：Add lubricant：Appropriate lubricant is added in the mixed liquor of the step c before injection；
e：Injection parameters are set：The injection pressure of injection machine is lifted into 10%, injection speed lifting 35%；
f：Storing：The mixed solution that the step d is formed is stored up at the spiral conveying tube feeding injection-moulding nozzle through injection machine
Material；
g：Injection mold is preheated：Injection mold is heated to 80 DEG C；
h：Injection：The step f storings are completed, while the mould in the step g is heated to after design temperature, open injection machine
Introduction valve, the mixed liquor of the step d is injected into through injection-moulding nozzle in the die cavity of mould；
i：Pressurize, cooling：The mixed liquor of the step d to being expelled in mold cavity carries out pressurize, makes its Slow cooling；
k：Die sinking：After the completion of the step i pressurizes, you can workpiece is taken out in die sinking.
In the present embodiment, the sodium acid carbonate dosage added in the step a is 5%-8%, the lemon of addition
The dosage of acid is 5%-10%, and the sodium acid carbonate is used to make the PP/PE liquid internals of molten condition to produce bubble, the citric acid
Plasticizer when being molded as PP/PE, makes PP/PE plastics rapid crystallizations, while making the shock absorber support toughness after shaping and anti-
Impulsive force strengthens, so as to improve the shock resistance of support.
In the present embodiment, the heating-up temperature melted in the step b to raw material is 280 DEG C.
In the present embodiment, added in the step c it is described into mixture be foam stabiliser, main component is polyalcohol
Any of class, sulfonated aliphatic alcohol, alpha-sulfonated fatty acid, and additive capacity is 0.5%-2.5%, it is described to be used to reduce into mixture
The surface tension of PP/PE mixing liquids, is allowed to that a large amount of minute bubbles can be produced and controls minute bubbles to be uniformly distributed, abscess is repaired automatically
The weakness of wall, is allowed to not brokenly bubble, makes bubble as a kind of rock-steady structure in support injection molding, can not only reduce support
Gross weight, while the molding time of support can be reduced.
In the present embodiment, the lubricant added in the step d be silicone powder or Tissuemat E, wherein, use
Additive capacity during silicone powder is 0.5%-2%, the use of additive capacity during Tissuemat E is 2%-4%, and the lubricant is used to carry
The mobility of high PP/PE mixed liquors.
In the present embodiment, the injection pressure of injection machine is 90-100MPa in the step e, and injection speed is 24-
27cm/s。
In the present embodiment, unidirectional spring needle is installed at the nozzle of the injection machine used in the step f.
In the present embodiment, the pressurize in the step i uses constant pressure pressurize, and dwell pressure is the 60MPa of injection pressure,
Dwell time is 3min.
The basic principles, principal features and advantages of the present invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, the original for simply illustrating the present invention described in above-described embodiment and specification
Reason, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes and improvements
It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its Xiao Wu circle
It is fixed.
Claims (8)
1. a kind of bumper shock absorber support fretting map Shooting Technique, it is characterised in that：Comprise the following steps：
a：Configure raw material：Appropriate sodium acid carbonate and citric acid are added in PP/PE granular materials；
b：Heating and melting is carried out to raw material：The raw material configured in the step a is put into the charging basket of injection machine, raw material is through note
Molding machine charging basket enters heater, under the shear action of screw in injection molding machine, PP/PE particles and the sodium acid carbonate and the lemon
Micro- reaction occurs for acid, makes occur bubble inside the PP/PE of molten condition；
c：Add into mixture：In the PP/PE mixed liquors of molten condition, it will make described in the appropriate step b into mixture addition
Bubble produced by step b is evenly mixed in PP/PE mixed liquors；
d：Add lubricant：Appropriate lubricant is added in the mixed liquor of the step c before injection；
e：Injection parameters are set：The injection pressure of injection machine is lifted into 10%, injection speed lifting 35%；
f：Storing：The mixed solution that the step d is formed is stored up at the spiral conveying tube feeding injection-moulding nozzle through injection machine
Material；
g：Injection mold is preheated：Injection mold is heated to 80 DEG C；
h：Injection：The step f storings are completed, while the mould in the step g is heated to after design temperature, open injection machine
Introduction valve, the mixed liquor of the step d is injected into through injection-moulding nozzle in the die cavity of mould.
i：Pressurize, cooling：The mixed liquor of the step d to being expelled in mold cavity carries out pressurize, makes its Slow cooling；
k：Die sinking：After the completion of the step i pressurizes, you can workpiece is taken out in die sinking.
2. a kind of bumper shock absorber support fretting map Shooting Technique according to claim 1, it is characterised in that：Institute
It is 5%-8% to state the sodium acid carbonate dosage added in step a, and the dosage of the citric acid of addition is 5%-10%.
3. a kind of bumper shock absorber support fretting map Shooting Technique according to claim 1, it is characterised in that：Institute
It is 280 DEG C to state the heating-up temperature melted in step b to raw material.
4. a kind of bumper shock absorber support fretting map Shooting Technique according to claim 1, it is characterised in that：Institute
State added in step c it is described into mixture be foam stabiliser, main component be polyalcohols, sulfonated aliphatic alcohol, alpha-sulfonated fatty
Any of acid, and additive capacity is 0.5%-2.5%.
5. a kind of bumper shock absorber support fretting map Shooting Technique according to claim 1, it is characterised in that：Institute
It is silicone powder or Tissuemat E to state the lubricant that is added in step d, wherein, it is using additive capacity during silicone powder
0.5%-2%, is 2%-4% using additive capacity during Tissuemat E.
6. a kind of bumper shock absorber support fretting map Shooting Technique according to claim 1, it is characterised in that：Institute
The injection pressure for stating injection machine in step e is 90-100MPa, and injection speed is 24-27cm/s.
7. a kind of bumper shock absorber support fretting map Shooting Technique according to claim 1, it is characterised in that：Institute
Unidirectional spring needle is installed at the nozzle for stating the injection machine used in step f.
8. a kind of bumper shock absorber support fretting map Shooting Technique according to claim 1, it is characterised in that：Institute
State the pressurize in step i and use constant pressure pressurize, dwell pressure is the 60MPa of injection pressure, and the dwell time is 3min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265298.2A CN107053626B (en) | 2017-04-21 | 2017-04-21 | A kind of bumper shock absorber support fretting map Shooting Technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265298.2A CN107053626B (en) | 2017-04-21 | 2017-04-21 | A kind of bumper shock absorber support fretting map Shooting Technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107053626A true CN107053626A (en) | 2017-08-18 |
| CN107053626B CN107053626B (en) | 2019-05-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710265298.2A Active CN107053626B (en) | 2017-04-21 | 2017-04-21 | A kind of bumper shock absorber support fretting map Shooting Technique |
Country Status (1)
| Country | Link |
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| CN (1) | CN107053626B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696267A (en) * | 2019-10-22 | 2020-01-17 | 苏州兆如电子有限公司 | Foaming injection molding method of television bracket |
| CN114010617A (en) * | 2021-12-21 | 2022-02-08 | 新昌辽远科技有限公司 | Hydroxypropyl starch empty capsule and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396050A (en) * | 2001-07-05 | 2003-02-12 | 大聚合物有限公司 | Foamed product of thermoplastic resin composition and production method thereof |
-
2017
- 2017-04-21 CN CN201710265298.2A patent/CN107053626B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1396050A (en) * | 2001-07-05 | 2003-02-12 | 大聚合物有限公司 | Foamed product of thermoplastic resin composition and production method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 卞军等: "《塑料成型原理及工艺》", 31 August 2015, 西南交通大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110696267A (en) * | 2019-10-22 | 2020-01-17 | 苏州兆如电子有限公司 | Foaming injection molding method of television bracket |
| CN114010617A (en) * | 2021-12-21 | 2022-02-08 | 新昌辽远科技有限公司 | Hydroxypropyl starch empty capsule and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107053626B (en) | 2019-05-28 |
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