CN108394062A - A kind of injection molding method of end cover for battery cells - Google Patents
A kind of injection molding method of end cover for battery cells Download PDFInfo
- Publication number
- CN108394062A CN108394062A CN201810343417.6A CN201810343417A CN108394062A CN 108394062 A CN108394062 A CN 108394062A CN 201810343417 A CN201810343417 A CN 201810343417A CN 108394062 A CN108394062 A CN 108394062A
- Authority
- CN
- China
- Prior art keywords
- injection molding
- battery cells
- end cover
- injection
- mold
- 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
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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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
-
- 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
- B29C45/26—Moulds
-
- 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
- B29C45/26—Moulds
- B29C45/34—Moulds having venting means
-
- 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
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- 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
- B29L2031/56—Stoppers or lids for bottles, jars, or the like, e.g. closures
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of injection molding methods of end cover for battery cells, belong to end cover for battery cells manufacturing field.The present invention is by the way that injection mold to be combined with injection molding process, by designing the mold to match with end cover for battery cells building block, the sizing material after heating and melting is injected into shaper using running gate system, by controlling injecting condition, all components of end cover for battery cells are injected by high pressure with the mode of injection molding, wait for that it cools and solidifies close adhesion and entire end cover for battery cells is made to become an entirety, to substantially increase the sealing performance of end cover for battery cells.
Description
Technical field
The present invention relates to end cover for battery cells manufacturing fields, and in particular to a kind of injection molding method of end cover for battery cells.
Background technology
In the prior art, most of end cover for battery cells is punch forming at present, by the way that manually all component combinations are compressed,
Low so as to cause production efficiency, product control is general.Such as the patent No. 201720832357.5, patent name is " lithium battery end cap "
Utility model patent discloses a kind of conductive plate axial limiting and the pole of being connected by a snap in the end cap of cover board, this structure
Under, there can be gap between the various components of end cover for battery cells, to cannot be guaranteed the air-tightness of battery.Therefore, pass through injection mould
Tool can form end cover for battery cells, the patent No. " 2017208036049 ", and patent name is " a kind of novel battery end cover sealing structure "
Utility model patent disclose a kind of end cover for battery cells filled using soft rubber material, still, which only notes
It moulds on the outside of sealing ring on battery cover, it cannot be guaranteed that the leakproofness of entire end cover for battery cells, also, the patent is not to its technique side
Method illustrates.
Invention content
It is an object of the invention to overcome deficiency in the prior art, a kind of injection molding method of end cover for battery cells is provided.
The technical scheme is that：A kind of injection molding method of end cover for battery cells, includes the following steps：
（1）, early-stage preparations：Prepare end cap accessory, injection molding die device, injection molding machine, end cap accessory include pole, L-type shelves ring,
O-ring, cover board connect injection molding die device and injection molding machine
（2）, heating：PPS in injection molding machine is heated to molten condition, temperature after heating is maintained at 290-320 DEG C；
（3）, molding：Pole, L-type shelves ring, O-ring, cover board are sequentially loaded into injection molding die device and are molded；
（4）, filling：Be molded by injection molding machine, setting one section of injection molding machine injection pressure be 50~70Bar, flow 40
~60mm/s, two sections of injection pressure is 10~20Bar, flow is 5~15mm/s, and injection time is 2~4s；
（5）, pressurize：Screw in injection molding machine continuation slowly moves forward, and so that the melt in material tube of injection machine is continued injection injection molding and uses
Die device cavity, time are 1~3s, supplement the sizing material needed for shrink of product；
（6）, it is cooling：The cooling water channel cooled down for shaped article is offered in the upper die and lower die of injection molding die device；It is cooling
Water route distance product surface distance is 5~8mm；Cooling time is 20-30s；
（7）, demoulding：Shaped article after the cooling period, break away from moulds cavity.
Further technical solution, middle plate is interior to be equipped with water channel, leads to recirculated water in water channel.
Further technical solution, step（4）Described in injection time refer to mold closure start to mold cavity to be filled into
Until 95%.
Further technical solution, step（1）Middle injection molding includes being successively set between mould bases from the bottom up with die device
Liftout plate, lower mold holder, middle plate, stripper plate, first piece of template, upper cores and lower mode are equipped between lower mold holder and middle plate, on
Mold cavity is formed between mode and lower mode, is equipped with and pole, L-type shelves ring, O-ring, the size of the cover plate phase in mold cavity
The independent insert matched.
Further technical solution, independent insert are evenly distributed with a plurality of air discharge duct on the contact surface of main body mold core, arrange
4~5mm is divided between air drain, the width of each air discharge duct is 5~6mm, and depth is 0.01~0.02mm.
Beneficial effects of the present invention：
1, injection mold is a kind of tool producing plastic products, is also to confer to the work of plasthetics complete structure and accurate dimension
Tool, injection molding are to produce a kind of processing method used when certain complex-shaped components in batches, are referred specifically to heated thawing
Plastics inject mold cavity by injection molding machine high pressure, after cooling and solidifying, obtain shaped article, the present invention by by injection mold with
Injection molding process is combined, and by designing the mold to match with end cover for battery cells building block, will be heated using running gate system
Sizing material after thawing is injected into shaper, by controlling pouring condition, is led to all components of end cover for battery cells with the mode of injection molding
Excessively high injection enters, and waits for that its cooling and solidifying holds tightly together.
2, the present invention can be obviously improved production efficiency and the production of end cover for battery cells by the way that end cover for battery cells is molded into an entirety
Quality improves sealing performance, to ensure that the safety and reliability of entire battery.
3, processing technology provided by the invention can reduce procedure of processing, to reduce the production cost of product, be suitble to push away
It is wide to use.
Specific implementation mode
Below by non-limiting embodiment, the present invention is further explained, understands the present invention.
The present invention is a kind of injection molding method of end cover for battery cells, specifically includes following steps：
（1）, early-stage preparations：Prepare pole, L-type shelves ring, O-ring, cover board, injection molding die device, injection molding machine, connection injection molding is used
Die device and injection molding machine,
Wherein, injection molding includes liftout plate between being successively set on mould bases from the bottom up, lower mold holder, middle plate, de- material with die device
Plate, first piece of template are equipped with upper cores and lower mode, mould type are formed between upper cores and lower mode between lower mold holder and middle plate
Chamber, mold cavity is interior to be equipped with the independent insert to match with pole, L-type shelves ring, O-ring, the size of the cover plate.Independent insert and main body
Be evenly distributed with a plurality of air discharge duct on the contact surface of mold core, between air discharge duct between be divided into 4~5mm, the width of each air discharge duct is 5
~6mm, depth are 0.01~0.02mm, for remaining air after mold is closed to be discharged, prevent product because of air Fast Compression
Generation is burnt, and lower mold holder is used for the water channel of cooling with being equipped in middle plate, and water channel distance product surface distance is 5~8mm；Water channel connects
Connect recirculated water；
（2）, heating：PPS in injection molding machine is heated to molten condition, temperature after heating is maintained at 320 DEG C；
（3）, molding：Pole, L-type shelves ring, O-ring, cover board are sequentially loaded into mold cavity and are molded；
（4）, filling：Be molded by injection molding machine, setting one section of injection molding machine injection pressure be 75Bar, flow 40mm/s,
Two sections of injection pressure is 20Bar, flow 5mm/s, and mold is closed the injection molding started until mold cavity is filled into 95%
Time is 3s；
（5）, pressurize：Screw in injection molding machine continuation slowly moves forward, and so that the melt in material tube of injection machine is continued injection injection molding and uses
Mold cavity, time 3s supplement the sizing material needed for shrink of product；
（6）, it is cooling：Logical recirculated water, it is 100-110 to carry out heat exchange in water channel to control upper cores temperature by recirculated water
DEG C, lower mode temperature is 50 DEG C；Control cooling time is 20-30s.
（7）, demoulding：Shaped article after the cooling period, break away from moulds cavity；
The present invention is noted the sizing material after heating and melting by the way that injection mold to be combined with injection molding process, using running gate system
Enter to shaper, by controlling pouring condition, all components of end cover for battery cells is injected by high pressure with the mode of injection molding, wait for it
Cooling and solidifying holds tightly together, and completes rear demoulding, moves in circles, and forms the production for placing accessory → injection molding → demoulding
Journey.
Claims (6)
1. a kind of injection molding method of end cover for battery cells, which is characterized in that include the following steps：
（1）, early-stage preparations：Prepare end cap accessory, injection molding die device, injection molding machine, end cap accessory include pole, L-type shelves ring,
O-ring, cover board connect injection molding die device and injection molding machine.
2.（2）, heating：PPS in injection molding machine is heated to molten condition, temperature after heating is maintained at 290-320 DEG C；
（3）, molding：Pole, L-type shelves ring, O-ring, cover board are sequentially loaded into injection molding die device and are molded；
（4）, filling：Be molded by injection molding machine, setting one section of injection molding machine injection pressure be 50~70Bar, flow 40
~60mm/s, two sections of injection pressure is 10~20Bar, flow is 5~15mm/s, and injection time is 2~4s；
（5）, pressurize：Screw in injection molding machine continuation slowly moves forward, and so that the melt in material tube of injection machine is continued injection injection molding and uses
Die device cavity, time are 1~3s, supplement the sizing material needed for shrink of product；
（6）, it is cooling：The cooling water channel cooled down for shaped article is offered in the upper die and lower die of injection molding die device；It is cooling
Water route distance product surface distance is 5~8mm；Cooling time is 20-30s；
（7）, demoulding：Shaped article after the cooling period, break away from moulds cavity.
3. a kind of injection molding method of end cover for battery cells according to claim 1, which is characterized in that the injection molding mold
It is equipped with water channel in device, recirculated water is led in water channel, control upper cores temperature is 100-110 DEG C, and lower mode temperature is 50 DEG C.
4. a kind of injection molding method of end cover for battery cells according to claim 1, which is characterized in that step（4）Described in
Injection time refers to mold closure and starts until mold cavity is filled into 95%.
5. a kind of injection molding method of end cover for battery cells according to claim 1, which is characterized in that step（1）Middle injection molding
Include liftout plate between being successively set on mould bases from the bottom up, lower mold holder, middle plate, stripper plate, first piece of template with die device,
It is equipped with upper cores and lower mode between lower mold holder and middle plate, forms mold cavity between upper cores and lower mode, in mold cavity
Equipped with the independent insert to match with pole, L-type shelves ring, O-ring, the size of the cover plate.
6. a kind of injection molding method of end cover for battery cells according to claim 4, which is characterized in that the independent insert with
Be evenly distributed with a plurality of air discharge duct on the contact surface of upper cores and lower mode, between air discharge duct between be divided into 4~5mm, it is each to be vented
The width of slot is 5~6mm, and depth is 0.01~0.02mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343417.6A CN108394062A (en) | 2018-04-17 | 2018-04-17 | A kind of injection molding method of end cover for battery cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810343417.6A CN108394062A (en) | 2018-04-17 | 2018-04-17 | A kind of injection molding method of end cover for battery cells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108394062A true CN108394062A (en) | 2018-08-14 |
Family
ID=63099167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810343417.6A Pending CN108394062A (en) | 2018-04-17 | 2018-04-17 | A kind of injection molding method of end cover for battery cells |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108394062A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106584763A (en) * | 2016-12-12 | 2017-04-26 | 东莞市广信知识产权服务有限公司 | Method for forming partition groove in mobile phone battery cover through injection molding |
| CN206426392U (en) * | 2017-01-10 | 2017-08-22 | 吉林正多科技股份有限公司 | A kind of Audi's passenger car accumulator plate lid 429A injection molds |
| CN107746520A (en) * | 2017-10-24 | 2018-03-02 | 常熟利星光电科技有限公司 | A kind of PVC injection materials and a kind of PVC injection moulding process that bloom mirror effect can be formed in product surface |
-
2018
- 2018-04-17 CN CN201810343417.6A patent/CN108394062A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106584763A (en) * | 2016-12-12 | 2017-04-26 | 东莞市广信知识产权服务有限公司 | Method for forming partition groove in mobile phone battery cover through injection molding |
| CN206426392U (en) * | 2017-01-10 | 2017-08-22 | 吉林正多科技股份有限公司 | A kind of Audi's passenger car accumulator plate lid 429A injection molds |
| CN107746520A (en) * | 2017-10-24 | 2018-03-02 | 常熟利星光电科技有限公司 | A kind of PVC injection materials and a kind of PVC injection moulding process that bloom mirror effect can be formed in product surface |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180814 |
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| WD01 | Invention patent application deemed withdrawn after publication |