CN106426749A - Method for improving injection molding quality of door lamp switch housing of car trunk - Google Patents
Method for improving injection molding quality of door lamp switch housing of car trunk Download PDFInfo
- Publication number
- CN106426749A CN106426749A CN201610582422.3A CN201610582422A CN106426749A CN 106426749 A CN106426749 A CN 106426749A CN 201610582422 A CN201610582422 A CN 201610582422A CN 106426749 A CN106426749 A CN 106426749A
- Authority
- CN
- China
- Prior art keywords
- housing
- injection molding
- switch panel
- door lamp
- switch
- 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.)
- Pending
Links
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
- B29C45/16—Making multilayered or multicoloured articles
-
- 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
- B29C45/16—Making multilayered or multicoloured articles
- B29C2045/1698—Making multilayered or multicoloured articles multicoloured articles moulded in one step
-
- 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)
- Manufacture Of Switches (AREA)
- Push-Button Switches (AREA)
Abstract
The present invention discloses a method for improving the injection molding quality of the door lamp switch housing of a car trunk and belongs to the injection molding method for plastic housing type parts. The invention aims to provide a method for effectively reducing the shrinkage and the deformation of the housing material, and improving the injection molding quality of a switch housing. The invention comprises a switch panel, a housing and an elastic membrance. The switch panel and the housing are hard parts formed through the sequential injection molding steps of the double-color injection molding process. The elastic membrance is covered onto the switch panel. During the injection molding process, a long strip-shaped process groove distributed around the cavity of the housing is formed on the switch panel by utilizing a mold. According to the method, the defects in the prior art that, the strict control of injection molding parameters is large in technical difficulty and high in production cost, are overcome. Meanwhile, the bonding force of the elastic material to a rigid substrate is further improved. Therefore, the method is used for the injection molding of the door lamp switch housing of the car trunk.
Description
Technical field
The present invention relates to the preparation method of a kind of automobile trunk door lamp switch housing, particularly relate to a kind of based on double-colored note
Method of moulding improves the method for automobile trunk door lamp switch housing injection quality；Belong to the injection moulding process of plastic casing class part.
Background technology
It is known that automobile trunk door lamp switch generally by housing, be fixed on this housing upper port and be linked as therewith
The switch panel of one, the caoutchouc elasticity diaphragm covering on this switch panel and described upper port being closed, insert at lower port
Enter in housing die cavity and fixing switch core body is constituted by buckle element；At present, bicolor injection mould is generally used to come one
The secondary injection mo(u)lding completing switch case and flexible sheet.
Double-shot moulding, the also referred to as injection of order lamination or double-material injection-molding.Belonging to the one of multi component injection molding, it is at rigid base
A kind of Shooting Technique of superposition elastomeric material at the end, ultimately forming one has different mechanical properties, different vision and haptic effect
Polymer products.It is actually in a kind of mould and assembles or " insert-molding " process of welding in mould, be one in recent years
The special injection molding technology developing rapidly.Owing to double-shot moulding uses bi-material sequential injection technique, in order to
Ensure bi-material can close and firm combine, at present be usually taken selection optimize mold temperature, melt temperature, injection speed,
The method of the molding proces s parameters such as dwell pressure and time improves and improves binding ability at composition surface for the bi-material.
But, when using double-shot moulding to process automobile trunk door lamp switch housing, although to above-mentioned Shooting Technique
Parameter has carried out more strict control；But during sequential injection（It is first molded switch case and panel, then again by rubber
Flexible sheet is moulded in panel surface）, owing to panel size is relatively big, and case material is nylon, after housing injection mo(u)lding
During die sinking, nylon material still can produce bigger contraction.When mold rotation 180 ° counter plate carries out the encapsulated injection of secondary,
The gap that distance is b can be formed between the cavity wall of housing and the core rod of encapsulation die；Therefore secondary cover material（Rubber
Glue）Can embed and this gap forms on housing cavity wall burr, and then affect the accurately installation positioning of switch body.
Content of the invention
For drawbacks described above present in prior art, it is desirable to provide a kind of improve automobile trunk door lamp switch
The method of housing injection quality, reducing case material contraction distortion, thus improves switch case injection quality.
To achieve these goals, the present invention is by the following technical solutions：It includes using two-shot molding process order note
Mould rigid switch panel and housing, flexible sheet on this switch panel for the covering；Utilize mould in institute in injection moulding process
State the strip technique groove being formed on switch panel around the distribution of described housing die cavity.
The axis of each described technique groove is parallel with neighbouring cavity wall.
The lateral cross section of technique groove is shaped as concave shape structure.
The degree of depth of technique groove is 3.2 millimeters, width is 1.5 millimeters.
Compared with the prior art, due to the fact that and have employed technique scheme, a plurality of in switch panel surface configuration
Technique groove, thus switch panel can be divided into the region of multiple little area；Therefore, it is possible to avoid case material（Nylon）Receive
Contracting accumulation, effectively overcome that conventional method is big injection moulding process middle shell mold cavity deformation amount, secondary encapsulated injection when hold
Easily form the defect of burr at housing die cavity.Further, since add technique groove on switch panel surface, therefore increase
Elastomeric material（Flexible sheet）With rigid basement（Switch panel）Contact area, not only can further improve elastomeric material with
The binding ability of rigid basement, avoid both separation to come off, but also be avoided that elastomeric material with rigid basement because separating, loosen
And shift.3rd, owing to technique groove is covered by elastomeric material, therefore can also be as a false proof mark of cracking down on counterfeit goods, indirectly
Play false proof effect of cracking down on counterfeit goods.The inventive method not only can avoid strictly controlling molding proces s parameters and bring technical difficulty big,
The defects such as production cost is high, and the adhesion of elastomeric material and rigid basement can also be improved further.
Brief description
Fig. 1 is the schematic diagram that the switch case that the inventive method makes is assembled with switch core body；
Fig. 2 is at the process chart using the inventive method to carry out secondary encapsulated injection flexible sheet on the switch panel of housing；
Fig. 3 is the A A sectional view in Fig. 2；
Fig. 4 is the schematic diagram that the switch case with burr is assembled with switch core body；
Fig. 5 is the process chart using conventional method to carry out secondary encapsulated injection flexible sheet on the switch panel of housing；
Fig. 6 is the B B sectional view in Fig. 5.
In figure：The 5th, switch panel the 1st, flexible sheet the 2nd, buckle element the 3rd, technique groove the 4th, housing switchs core body the 6th, core rod and the 7th, flies
Burr 8.
Detailed description of the invention
With specific embodiment, the inventive method is described further below in conjunction with the accompanying drawings：
As shown in Figure 1：The 5th, automobile trunk door lamp switch is generally fixed on this housing upper port by housing and is linked as one therewith
The 1st, the switch panel of body covers on this switch panel and the 2nd, inserts the caoutchouc elasticity diaphragm that described upper port is closed at lower port
Enter in housing 5 die cavity and fixing switch core body 6 is constituted by buckle element 3；Wherein, housing 5 and switch panel 1 are by Buddhist nun
Dragon material, flexible sheet 2 are formed by two-shot molding process sequentially built by elastomeric material.
As shown in figures 2-3, the inventive method is：When being molded rigid switch panel 1 and housing 5, utilize mould（Figure
Not shown in）Switch panel 1 forms the multiple strip technique grooves 4 around the distribution of housing 5 die cavity.Each technique groove 4
Axis parallel with neighbouring cavity wall.The lateral cross section of technique groove 4 is shaped as concave shape structure, the degree of depth of technique groove 4
Be 3.2 millimeters, width be 1.5 millimeters.
From Fig. 5～6 it can be seen that use conventional method to make rigid basement（Housing 5 and switch panel 1）When, due to
Technique groove 4 is not offered on the surface of switch panel 1, and the area of switch panel 1 is relatively big, the therefore material of rigid basement（Nylon）
Shrink cumulant also relatively big, easily cause housing 5 to shrink after rigid basement injection mo(u)lding, cause the die cavity of housing 5 to increase, chamber
The gap b that distance is 0.01～0.02 millimeter can be formed between the core rod 7 of wall and encapsulation die；When carrying out the encapsulated injection of secondary
When, cover material（Rubber）Can embed and this gap forms on housing cavity wall burr 8, and then impact switch core body
6 accurately install positioning（See Fig. 4）.
Claims (4)
1. the method improving automobile trunk door lamp switch housing injection quality, including use two-shot molding process order note
Mould rigid switch panel and housing, flexible sheet on this switch panel for the covering；It is characterized in that：Profit in injection moulding process
Form the strip technique groove around the distribution of described housing die cavity with mould on described switch panel.
2. the method for raising automobile trunk door lamp switch housing injection quality according to claim 1, it is characterised in that：
The axis of each described technique groove is parallel with neighbouring cavity wall.
3. the method for raising automobile trunk door lamp switch housing injection quality according to claim 2, it is characterised in that：
The lateral cross section of technique groove is shaped as concave shape structure.
4. the method for raising automobile trunk door lamp switch housing injection quality according to claim 2, it is characterised in that：
The degree of depth of technique groove is 3.2 millimeters, width is 1.5 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610582422.3A CN106426749A (en) | 2016-07-22 | 2016-07-22 | Method for improving injection molding quality of door lamp switch housing of car trunk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610582422.3A CN106426749A (en) | 2016-07-22 | 2016-07-22 | Method for improving injection molding quality of door lamp switch housing of car trunk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106426749A true CN106426749A (en) | 2017-02-22 |
Family
ID=58184265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610582422.3A Pending CN106426749A (en) | 2016-07-22 | 2016-07-22 | Method for improving injection molding quality of door lamp switch housing of car trunk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106426749A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115139445A (en) * | 2022-06-30 | 2022-10-04 | 深圳市中孚能电气设备有限公司 | Injection structure and miner's lamp |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005507803A (en) * | 2001-10-25 | 2005-03-24 | ファウンテン パテンツ ベー．フェー．イー．オー． | Method and apparatus for forming thin-walled products and products produced thereby |
| CN1649714A (en) * | 2002-04-30 | 2005-08-03 | 吉品大协株式会社 | Resin-made interior member for switch body, mold for molding same, and molding method for same |
| CN101774252A (en) * | 2009-12-30 | 2010-07-14 | 范迪雷 | Imprint injection molding process for switch socket panel and composite injection mold |
| CN204136326U (en) * | 2014-08-13 | 2015-02-04 | 东莞康佳模具塑胶有限公司 | Improve the mould of double-shot moulding automobile component soft or hard glue die joint quality |
| CN204315410U (en) * | 2015-01-23 | 2015-05-06 | 福州大学 | A kind of textile cloth and plastics composite switch panel |
-
2016
- 2016-07-22 CN CN201610582422.3A patent/CN106426749A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005507803A (en) * | 2001-10-25 | 2005-03-24 | ファウンテン パテンツ ベー．フェー．イー．オー． | Method and apparatus for forming thin-walled products and products produced thereby |
| CN1649714A (en) * | 2002-04-30 | 2005-08-03 | 吉品大协株式会社 | Resin-made interior member for switch body, mold for molding same, and molding method for same |
| CN101774252A (en) * | 2009-12-30 | 2010-07-14 | 范迪雷 | Imprint injection molding process for switch socket panel and composite injection mold |
| CN204136326U (en) * | 2014-08-13 | 2015-02-04 | 东莞康佳模具塑胶有限公司 | Improve the mould of double-shot moulding automobile component soft or hard glue die joint quality |
| CN204315410U (en) * | 2015-01-23 | 2015-05-06 | 福州大学 | A kind of textile cloth and plastics composite switch panel |
Non-Patent Citations (1)
| Title |
|---|
| H.E.毕勒 D.维斯滕贝格: "《合理的防腐蚀设计》", 30 June 1990, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115139445A (en) * | 2022-06-30 | 2022-10-04 | 深圳市中孚能电气设备有限公司 | Injection structure and miner's lamp |
| CN115139445B (en) * | 2022-06-30 | 2023-12-01 | 深圳市中孚能电气设备有限公司 | Injection molding structure and miner's lamp |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170222 |