CN113370479A - Storage battery shell injection mold and molding process - Google Patents
Storage battery shell injection mold and molding process Download PDFInfo
- Publication number
- CN113370479A CN113370479A CN202110808464.5A CN202110808464A CN113370479A CN 113370479 A CN113370479 A CN 113370479A CN 202110808464 A CN202110808464 A CN 202110808464A CN 113370479 A CN113370479 A CN 113370479A
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- battery case
- punching
- mold
- core
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- 238000002347 injection Methods 0.000 title claims abstract description 26
- 239000007924 injection Substances 0.000 title claims abstract description 26
- 238000003860 storage Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000000465 moulding Methods 0.000 title abstract description 7
- 238000004080 punching Methods 0.000 claims abstract description 39
- 238000001746 injection moulding Methods 0.000 claims abstract description 22
- 238000005192 partition Methods 0.000 claims description 26
- 239000004743 Polypropylene Substances 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000008188 pellet Substances 0.000 claims description 3
- -1 polypropylene Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000010309 melting process Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000003754 machining Methods 0.000 abstract description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 239000012943 hotmelt Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Images
Classifications
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- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut 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
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
-
- 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
- B29C45/2602—Mould construction elements
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses an injection mold and a molding process for a storage battery shell in the field of storage battery production, wherein a telescopic punching assembly is arranged in the injection mold, and an assembly hole is formed at one time in the injection molding process, so that the working time cost caused by independently machining the assembly hole after the production of the shell on line can be avoided, the production efficiency is improved, and the assembly hole formed by one-time injection molding has excellent and stable structural performance and better product quality compared with the storage battery shell in the prior art.
Description
Technical Field
The invention relates to the field of storage battery production, in particular to a storage battery shell injection mold and a molding process.
Background
Lead acid battery wide application is in each field such as traffic, communication, electric power, military affairs, navigation, aviation, its major structure includes the battery case, the end cover, connecting terminal, the polar plate, electrolyte, the inside accumulator groove that forms of battery case is used for placing polar plate and electrolyte, the accumulator groove is separated for a plurality of battery cell jars by the partition wall usually, the battery cell is placed the utmost point group that is formed by positive plate and negative plate respectively, then a plurality of utmost point group establish ties and form holistic utmost point crowd structure, electrolyte splendid attire is in the battery cell, set up the equipment hole on the partition wall between a plurality of electrolyte jars and realize utmost point crowd series connection intercommunication. Production and processing to battery case among the prior art is through injection moulding earlier, form the overall structure of casing and partition wall, then the manual frock of punching of rethread or carry out the processing of equipment hole on the partition wall through automatic drilling equipment, this makes battery case's production machining efficiency lower, and such processing is mostly mechanical external force and processes the equipment hole by force, there are more burrs at the equipment hole edge of formation, need carry out surface treatment once more, influence production efficiency more, and there is the uneven risk that produces deformation or fracture of partition wall atress in the process of punching, lead to finished product battery case probably to exist the invisible crackle of naked eye, influence the product quality of dispatching from the factory.
Disclosure of Invention
The invention aims to provide an injection mold for a storage battery shell, and aims to solve the problems that the production efficiency is low and the product quality is influenced because the existing storage battery shell is produced by firstly performing injection molding and then machining an assembly hole.
In order to achieve the purpose, the basic technical scheme of the invention is as follows: storage battery case injection mold, including die holder and mold core, the mold core is installed on the die holder, and the mold core becomes rectangular block shape, is equipped with a plurality of partition wall shaping clearances on the mold core, buries a plurality of subassemblies that punch in the mold core underground, and the subassembly that punches includes the head of punching, is equipped with the passageway that punches that supplies the head of punching to expose on the mold core, and the passageway opening that punches is connected with drive assembly towards partition wall shaping clearance, drive assembly on the die holder.
The principle and the advantages of the scheme are as follows: in practical application, the die holder provides support for the die core, the die holder and the die core form a male die, a female die of the die is an original structure in the prior art, the die core is used as a carrier for forming the storage battery shell, a rectangular die core and a partition wall forming gap on the rectangular die core and a die groove of the female die after die assembly form a die cavity, the punching assembly is used for forming an assembling hole on the partition wall, the driving assembly is used for driving the punching assembly to move, the specific forming structure for forming the assembling hole in the die cavity through the punching head, the punching assembly is embedded in the die core, a punching channel is arranged on the die core for exposing the punching head, the punching assembly is of a hidden design, the die core does not need to be disassembled, the storage battery shell with the assembling hole can be formed through one-time injection molding, the assembling hole does not need to be independently machined after injection molding, the production efficiency is greatly improved, and the edge of the assembling hole formed through one-time injection molding is smooth and has no cracks, the quality of the formed product is reliably ensured.
Furthermore, the subassembly that punches still drives actuating cylinder, and the head that punches is connected at the output that drives actuating cylinder. Drive the drive structure that actuating cylinder regarded as the punching head as preferred, pneumatic drive the punching head and can stretch out and draw back in the passageway that punches in the shaping for the raw materials can effectively mould plastics and form the battery case that has the equipment hole during the drawing of patterns.
Further, drive assembly includes the gas circuit module, and the gas circuit module inlays to be established on the die holder, and inside inlet channel and the return air passageway of being equipped with of gas circuit module all are connected with the intake pipe between inlet channel and every drive actuating cylinder, and return air passageway and every are driven and all are connected with the muffler between the actuating cylinder. As an integrated gas management structure, the gas path module is preferably used, the driving cylinder realizes gas supply action through the gas inlet pipe and the gas inlet channel, exhaust action is realized through the gas return pipe and the gas return channel, gas supply and exhaust can be intensively carried out through the gas path module, the structure is more compact, and the driving of the driving cylinder is more reliable and effective.
Further, the mold core comprises a plurality of core blocks side by side, a partition wall forming gap is formed between every two adjacent core blocks, and the punching channels on the core blocks are arranged in a staggered mode. Preferably, the storage battery shell with the plurality of parallel battery grooves can be effectively molded, and the formed assembly holes are distributed in a staggered mode through the punching channels arranged in a staggered mode, so that the connection and the assembly of the pole groups are facilitated.
Furthermore, the mold core comprises a plurality of core blocks arranged in a matrix, partition wall forming gaps are formed between every two adjacent core blocks, and the punching channels on the core blocks are arranged in a U shape. Preferably, the battery case with the plurality of battery grooves arranged in a matrix can be effectively formed, and the plurality of battery cases are connected in series through the assembly holes, so that the battery case can be assembled to form a battery product after being formed.
The invention also provides a storage battery shell injection molding process, which adopts the storage battery shell injection mold and comprises the following steps:
A. closing the die, closing and preheating the die to the temperature of 190 ℃ plus 230 ℃ of the charging barrel and the temperature of 220 ℃ plus 245 ℃, supplying gas to each driving cylinder through the gas circuit module and the gas inlet pipe, and enabling the driving cylinders to drive the punching heads to extend out of the punching channels to be tightly propped against the side walls of the adjacent core blocks;
B. injecting and maintaining pressure, namely heating and melting PP (polypropylene) particles serving as a raw material in a charging barrel and a hot runner, injecting the PP particles into a mold under the pressure of 60-135Bar, wherein the injection time is 5.5-9.5s, the cavity of the mold is filled with the molten PP particles, and the pressure of 30-70Bar is kept for 2-4s after injection molding;
C. melting glue and loosening, wherein the pressure of the melting glue is 100-;
D. demoulding, drive the cylinder return-air to every through gas circuit module and muffler, make and drive inside the actuating cylinder orders about the punching head and retracts to the pellet from the passageway that punches, form the equipment hole on the battery case partition in the die cavity, the die sinking takes out battery case.
The compound die process heats feed cylinder and hot runner in advance in this scheme, pneumatic order about the head that punches and stretch out, form the die cavity between public mould and the master model, stretch out the position that the head had reserved the equipment hole of punching in the partition wall shaping clearance in the die cavity, raw materials after the hot melt jets out the in-process through the control to pressure and time, ensure that the die cavity can fully be filled up to the raw materials, especially there is local narrow and small space in the partition wall shaping clearance after the head that punches stretches out and also can effectively fill up, handle through the pressurize, effectively guarantee the reliable and stable shaping of partition wall. The storage battery shell with the assembly holes can be obtained after glue melting, loosening and demolding, one-step molding of the storage battery shell can be completed through one-step injection molding, and the production time is greatly shortened compared with that in the prior art.
Further, in the injection process in the step B, the first pressure 100Bar, the second pressure 115Bar, the third pressure 135Bar and the fourth pressure 60Bar are adopted, and the injection time is 7.5 s. As the preferred injection process, the raw materials can be ensured to fully and effectively fill the cavity, the defects in the partition wall forming are avoided, and the complete forming of the assembly holes is ensured.
Further, in the glue melting process in the step C, a first section pressure 105Bar, a back pressure 5Bar, a second section pressure 105Bar, a back pressure 5Bar, a third section pressure 100Bar and a back pressure 3Bar are adopted. This is preferred to ensure uniform compaction of the hot-melt raw material.
Further, in the step C, the pressure is released by 35Bar, the cooling time is 50s, and the forming period is 75 s. Preferably, this ensures a reliable compaction of the material in the barrel, which is advantageous for high-quality injection molding of the next mold.
And further, in the step C, the low-voltage protection time is 5 s. Preferably, the mold closing and opening process can be effectively protected from being damaged.
Drawings
FIG. 1 is a side view of a die holder and a die core in embodiment 1 of the present invention;
FIG. 2 is a side view of the mold core in example 1 of the present invention;
fig. 3 is a top view of the mold core in example 1 of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a die holder 1, a core block 2, an air path module 3, a driving cylinder 4, a punching head 5, an air inlet channel 6 and an air return channel 7.
Example 1, substantially as shown in figure 1: storage battery shell injection mold, including die holder 1 and mold core, the mold core is installed on die holder 1, and the mold core becomes rectangular block shape, is equipped with five partition wall shaping clearances on the mold core, and the mold core includes six core blocks 2 side by side, is partition wall shaping clearance between the adjacent core block 2. As shown in the combined figure 2, five punching components are embedded in the mold core, each punching component comprises a driving cylinder 4 and a punching head 5, and the punching heads 5 are connected to the output end of the driving cylinders 4. As shown in fig. 3, the five core blocks 2 sequentially arranged from left to right among the six core blocks 2 are provided with the punching channels for exposing the punching heads 5, the openings of the punching channels face the partition wall forming gap, the punching channels on the five core blocks 2 sequentially arranged from left to right are arranged in a staggered manner, the punching assemblies are connected with the driving assemblies, and the driving assemblies are connected to the die holder 1.
Combine fig. 2 to show, drive assembly includes gas circuit module 3, and gas circuit module 3 inlays and establishes on die holder 1, and gas circuit module 3 is inside to be equipped with inlet channel 6 and return air passageway 7, and inlet channel 6 all is connected with the intake pipe with every between driving actuating cylinder 4, and return air passageway 7 all is connected with the muffler with every between driving actuating cylinder 4.
A. closing the dies, namely closing and preheating the dies to the temperature of 190-;
B. injecting and maintaining pressure, namely heating and melting PP (polypropylene) particles in a charging barrel and a hot runner, injecting the hot-melted PP particles into a mold, wherein the pressure of a first section is 100Bar, the pressure of a second section is 115Bar, the pressure of a third section is 135Bar, the pressure of a fourth section is 60Bar, the injection time is 7.5s, a mold cavity is filled with the melted PP particles, and the pressure of 50Bar is kept for 2s after injection molding;
C. melting glue and loosening, wherein in the melting glue process, a first section of pressure 105Bar, a back pressure 5Bar, a second section of pressure 105Bar, a back pressure 5Bar, a third section of pressure 100Bar and a back pressure 3Bar are adopted, and in the loosening process, the back loosening and the loosening pressure 35Bar are adopted, the cooling time is 50s, the molding period is 75s, and the low-pressure protection time is 5 s;
D. demoulding, drive 4 return-air of cylinder to every through gas circuit module 3 and muffler, make and drive cylinder 4 and drive that punch head 5 is driven to retract to inside pellet 2 from the passageway that punches, form the equipment hole on the battery case partition in the die cavity, the die sinking takes out battery case.
Example 3, this example differs from example 2 in that the injection time in step B was 5.5s, and the pressure after injection molding was maintained at 30Bar for 2 s.
Example 4, this example differs from example 2 in that the injection time in step B was 9.5s, and the pressure after injection molding was maintained at 70Bar for 4 s.
Example 5, this example differs from example 1 in that the core comprises six core blocks 2 arranged in a matrix, with partition forming gaps between adjacent core blocks 2, and in that the perforation lanes between the six core blocks 2 are arranged in a U-shape. Therefore, the storage battery shell with the battery grooves arranged in a matrix can be effectively formed, and the plurality of storage battery shells are connected in series through the assembling holes, so that the storage battery product can be conveniently formed after forming.
This scheme has adopted and has set up the telescopic subassembly that punches inside injection mold, at the in-process one shot forming equipment hole of moulding plastics, can avoid the line production casing after the man-hour cost that brings through machining equipment hole alone, improve production efficiency, injection moulding's equipment hole structural performance is excellent moreover, stable, it is better to compare prior art's battery case product quality.
The foregoing is merely an example of the present invention and common general knowledge in the art of specific structures and/or features of the invention has not been set forth herein in any way. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. Storage battery shell injection mold, its characterized in that: including die holder and mold core, the mold core is installed on the die holder, the mold core becomes rectangular block shape, is equipped with a plurality of partition wall shaping clearances on the mold core, has buried a plurality of subassemblies that punch underground in the mold core, and the subassembly that punches includes the head of punching, is equipped with the passageway that punches that supplies the head to expose on the mold core, and the passageway opening that punches is connected with drive assembly towards partition wall shaping clearance, drive assembly and connects on the die holder.
2. The battery case injection mold according to claim 1, characterized in that: the punching assembly further comprises a driving cylinder, and the punching head is connected to the output end of the driving cylinder.
3. The battery case injection mold according to claim 2, wherein: the drive assembly comprises a gas circuit module, the gas circuit module is embedded in the die holder, a gas inlet channel and a gas return channel are arranged in the gas circuit module, a gas inlet pipe is connected between each gas inlet channel and each drive cylinder, and a gas return pipe is connected between each gas return channel and each drive cylinder.
4. The battery case injection mold according to claim 3, wherein: the mold core comprises a plurality of core blocks side by side, partition wall forming gaps are formed between the adjacent core blocks, and the punching channels on the core blocks are arranged in a staggered mode.
5. The battery case injection mold according to claim 3, wherein: the mold core comprises a plurality of core blocks arranged in a matrix, partition wall forming gaps are formed between every two adjacent core blocks, and the punching channels on the core blocks are arranged in a U shape.
6. The injection molding process of the storage battery shell is characterized in that: the battery case injection mold according to any one of claims 1 to 5 is used, comprising the steps of:
A. closing the die, closing and preheating the die to the temperature of 190 ℃ plus 230 ℃ of the charging barrel and the temperature of 220 ℃ plus 245 ℃, supplying gas to each driving cylinder through the gas circuit module and the gas inlet pipe, and enabling the driving cylinders to drive the punching heads to extend out of the punching channels to be tightly propped against the side walls of the adjacent core blocks;
B. injecting and maintaining pressure, namely heating and melting PP (polypropylene) particles serving as a raw material in a charging barrel and a hot runner, injecting the PP particles into a mold under the pressure of 60-135Bar, wherein the injection time is 5.5-9.5s, the cavity of the mold is filled with the molten PP particles, and the pressure of 30-70Bar is kept for 2-4s after injection molding;
C. melting glue and loosening, wherein the pressure of the melting glue is 100-;
D. demoulding, drive the cylinder return-air to every through gas circuit module and muffler, make and drive inside the actuating cylinder orders about the punching head and retracts to the pellet from the passageway that punches, form the equipment hole on the battery case partition in the die cavity, the die sinking takes out battery case.
7. The battery case injection molding process of claim 6, wherein: and in the injection process in the step B, the first section pressure is 100Bar, the second section pressure is 115Bar, the third section pressure is 135Bar, the fourth section pressure is 60Bar, and the injection time is 7.5 s.
8. The battery case injection molding process of claim 7, wherein: and C, in the glue melting process in the step C, a first section pressure 105Bar, a back pressure 5Bar, a second section pressure 105Bar, a back pressure 5Bar, a third section pressure 100Bar and a back pressure 3Bar are adopted.
9. The battery case injection molding process of claim 8, wherein: and C, releasing the pressure of 35Bar, cooling for 50s, and forming for 75 s.
10. The battery case injection molding process of claim 9, wherein: and C, low-voltage protection time is 5 s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110808464.5A CN113370479A (en) | 2021-07-16 | 2021-07-16 | Storage battery shell injection mold and molding process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110808464.5A CN113370479A (en) | 2021-07-16 | 2021-07-16 | Storage battery shell injection mold and molding process |
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| Publication Number | Publication Date |
|---|---|
| CN113370479A true CN113370479A (en) | 2021-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110808464.5A Pending CN113370479A (en) | 2021-07-16 | 2021-07-16 | Storage battery shell injection mold and molding process |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203267087U (en) * | 2013-04-25 | 2013-11-06 | 理士电池私人有限公司 | Battery case mould |
| CN207206994U (en) * | 2017-09-09 | 2018-04-10 | 台州市三鼎模塑有限公司 | Accumulator housing injection mold |
| CN208558210U (en) * | 2018-07-19 | 2019-03-01 | 宁波市国盛仪表有限公司 | Plastic housing mold |
| CN110341125A (en) * | 2019-07-03 | 2019-10-18 | 优耐富（长兴）自动化设备有限公司 | Battery jar hot flow path plastic rubber mold structure and its forming method |
| CN112406040A (en) * | 2020-10-30 | 2021-02-26 | 刘前勇 | Injection mold with adjustable core pulling extension distance |
-
2021
- 2021-07-16 CN CN202110808464.5A patent/CN113370479A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203267087U (en) * | 2013-04-25 | 2013-11-06 | 理士电池私人有限公司 | Battery case mould |
| CN207206994U (en) * | 2017-09-09 | 2018-04-10 | 台州市三鼎模塑有限公司 | Accumulator housing injection mold |
| CN208558210U (en) * | 2018-07-19 | 2019-03-01 | 宁波市国盛仪表有限公司 | Plastic housing mold |
| CN110341125A (en) * | 2019-07-03 | 2019-10-18 | 优耐富（长兴）自动化设备有限公司 | Battery jar hot flow path plastic rubber mold structure and its forming method |
| CN112406040A (en) * | 2020-10-30 | 2021-02-26 | 刘前勇 | Injection mold with adjustable core pulling extension distance |
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Application publication date: 20210910 |