CN114701125A - High-temperature-resistant copper bar injection mold and process for three-electric product of new energy automobile - Google Patents
High-temperature-resistant copper bar injection mold and process for three-electric product of new energy automobile Download PDFInfo
- Publication number
- CN114701125A CN114701125A CN202210288590.7A CN202210288590A CN114701125A CN 114701125 A CN114701125 A CN 114701125A CN 202210288590 A CN202210288590 A CN 202210288590A CN 114701125 A CN114701125 A CN 114701125A
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- Prior art keywords
- copper bar
- mold
- sliding block
- slide block
- temperature
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 82
- 239000010949 copper Substances 0.000 title claims abstract description 82
- 238000002347 injection Methods 0.000 title claims abstract description 18
- 239000007924 injection Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title description 9
- 238000001746 injection moulding Methods 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims description 23
- 239000004033 plastic Substances 0.000 claims description 22
- 229920003023 plastic Polymers 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 239000000565 sealant Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007605 air drying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
-
- 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
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/36—Plugs, connectors, or parts thereof
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a high-temperature-resistant copper bar injection mold for a third electric product of a new energy automobile, which comprises a first upper mold and a lower mold, wherein a first jack is arranged in the middle of the first upper mold, a second upper mold is inserted in the jack, a second jack is arranged in the center of the second upper mold, a clamp for clamping a copper bar is inserted in the second jack, an injection mold cavity is formed among the first upper mold, the second upper mold, the lower mold and the clamp, a first slide block and a second slide block which are inserted from splicing surfaces are arranged on two sides of the first upper mold and the lower mold, a first inserting plate inserted into the mold cavity and abutted against the copper bar is arranged at the end part of the first slide block, a second inserting plate inserted into the mold cavity and abutted against the copper bar is arranged at the end part of the second slide block, the first inserting plate and the second inserting plate are symmetrically arranged on two sides of the copper bar and are divided into an upper half and a lower half, and the mold also comprises a third slide block and a fourth slide block for replacing the first slide block and the second slide block, no inserting plate is arranged at the end parts of the third sliding block and the fourth sliding block, and the leakage risk of the product is permanently solved by the manufactured copper bar injection molding part.
Description
Technical Field
The invention relates to the technical field of copper bar injection molding, in particular to a copper bar injection mold and a process.
Background
At present, the conductive connection copper bar on the market is a single insert injection molding structure, the structure meets the requirement of an electric appliance product without sealing requirements, but along with the sealing performance requirement of a three-electric product of a new energy automobile (mainly the sealing performance between the upper half section and the lower half section of the copper bar, namely the inner structure and the outer structure of the injection molding copper bar, the two ends of the copper bar are respectively connected with a motor and an electric controller part, the motor is in a sealed cavity, oil for cooling the motor is arranged in the cavity, the electric control part is provided with an IGBD module, a PCB (printed circuit board) and a capacitor and the like and cannot be contacted with liquid), the external sealing of the insert injection molding structure is easy to guarantee, but the single metal insert injection molding process cannot adapt to the sealing requirement of long-term high and low temperature periodical change due to the fact that the shrinkage volume is different or the injection molding defects are caused by different metal poles and different plastics. The current solution in the industry is to glue the periphery of the metal piece to make up for the defect. Therefore, the manufacturing process is complex, the air drying period of the sealant is long, the sealant is easy to cause environmental pollution, the requirements on the production environment and the protection of workers are high, the production period of a product is long, and the efficiency is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a high-temperature-resistant copper bar injection mold and a process for a three-electric product of a new energy automobile, which solve the problems of insufficient sealing performance of the existing copper bar injection molding part due to different specific heat of a metal electrode and plastic, over-high maintenance cost and low sealing efficiency.
The purpose of the invention is realized as follows: a high temperature resistant copper bar injection mold and a process for three electric products of a new energy automobile, the mold comprises a first upper mold and a lower mold, a first jack is arranged at the middle part of the first upper mold, a second upper mold is inserted in the jack, a second jack is arranged at the center of the second upper mold, a clamp for clamping a copper bar is inserted in the second jack, an injection molding mold cavity is formed between the first upper mold, the second upper mold, the lower mold and the clamp, a first sliding block and a second sliding block which are inserted from a splicing surface are arranged at the two sides of the first upper mold and the lower mold, a first inserting plate inserted in the mold cavity and supported on the copper bar is arranged at the end part of the first sliding block, a second inserting plate inserted in the mold cavity and supported on the copper bar is arranged at the end part of the second sliding block, the first inserting plate and the second inserting plate are symmetrically arranged at the two sides of the copper bar, the mold cavity is divided into an upper half and a lower half, the mold further comprises a third sliding block and a fourth sliding block for replacing the first sliding block and the second sliding block, the end parts of the third sliding block and the fourth sliding block are not provided with inserting plates;
the injection molding process comprises the following steps:
1) fixing the first upper die and the second upper die, clamping three copper bars to be subjected to injection molding by using a clamp, and then inserting the three copper bars into the second jack;
2) controlling the first upper die, the second upper die, the lower die, the first sliding block and the second sliding block to be matched;
3) controlling the temperature, and injecting plastic under pressure until the plastic is completely filled;
4) after cooling, withdrawing the first slide block and the second slide block, and inserting a third slide block without the first inserting plate and a fourth slide block without the second inserting plate;
3) and pressurizing and injecting rubber until the copper bar is completely filled, and demolding after cooling to obtain the high-temperature-resistant high-sealing-property copper bar.
Firstly, the first sliding block and the second sliding block are designed, the first inserting plate and the second inserting plate which are inserted into the die cavity and abut against the copper bar are arranged at the end parts of the first sliding block and the second sliding block in a matched mode, so that through holes penetrating through the centers of plastic profiles are formed in the positions of the first inserting plate and the second inserting plate during injection molding, a foundation is provided for filling sealing rubber in the positions, the sealing rubber is filled in the through holes to enable the sealing rubber to wrap the copper bar, the sealing rubber separates the upper portion and the lower portion of the copper bar, and the elasticity of the sealing rubber cannot be affected by the high temperature of the copper bar, so that the problem that the sealing performance is insufficient due to different specific heat of a metal pole and plastic in other positions is solved; meanwhile, the first inserting plate and the second inserting plate on the two sides of the copper bar also play a role in clamping and fixing the copper bar, so that the stability of the copper bar injection molding process is ensured, the situation that the local sealing is out of the problem due to insufficient stability is avoided, and the sealing performance is further improved.
Secondly, when the copper bar is molded on the upper die, the second upper die is inserted into the first upper die, then the copper bar is clamped by using the clamp and inserted into a second jack on the second upper die, and the structure solves the problem that the integral upper die needs to be replaced when the upper die is used; the design is that the second upper die can be directly replaced when the second upper die needs to be maintained.
Finally, the high-temperature-resistant high-sealing-performance copper bar can be obtained through twice injection molding by the process, the production period is short, the sealant is not used, the problem of environmental pollution is solved, and the problem of low production efficiency is also solved.
Compared with the prior art, the invention has the beneficial effects that:
the manufactured copper bar injection molding piece permanently solves the leakage risk of products, greatly reduces the production cost and the production period, has a simple structure, can quickly realize the assembly of the copper bar, and is more suitable for narrow space arrangement.
As an improvement of the technical scheme, the clamp is formed by splicing two clamping plates, a groove for placing the copper bar is formed in one clamping plate, and inclined surfaces are machined on two sides of the second insertion hole. The wedge structure is realized through the inclined plane on a pair of splint cooperation, along with the decline of splint realize pressing from both sides tightly the copper bar, solve the leakproofness problem that the copper bar is fixed unstable and brings.
As an improvement of the technical scheme of the invention, bosses which are butted against the first inserting plate and the second inserting plate are processed on the bottom surface of the second upper die. The boss is designed to form a small hole communicated with the through hole in the plastic part, and when rubber is filled in the small hole, the rubber can be filled in the small hole, so that the connection strength between the rubber and the plastic is enhanced.
As an improvement of the technical scheme of the invention, a first gap is processed on the first plug board, a second gap is processed on the second plug board, and the first gap and the second gap are staggered. The first notch and the second notch can be filled with rubber when being filled with rubber, so that the connection strength between the rubber and the plastic is further enhanced.
As an improvement of the technical scheme of the invention, when the first slide block and the second slide block are withdrawn in the step 4), the second upper die is required to be moved upwards to expose the through hole formed by the boss. Therefore, the rubber can be filled into the small hole formed by the boss more conveniently.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic perspective view of the mold of the present invention.
FIG. 2 is a cross-sectional view of the inventive die.
FIG. 3 is a schematic structural diagram of a first slide block and a second slide block in the mold of the present invention.
Fig. 4 is a schematic view of a second upper mold of the present invention.
Fig. 5 is a schematic view of a three-dimensional structure of the copper bar manufactured by the present invention.
Fig. 6 is a sectional view of the copper bar manufactured by the present invention.
Fig. 7 is a schematic structural view of a plastic part in the copper bar manufactured by the present invention.
Fig. 8 is a schematic view of the structure of the sealing rubber in the copper bar manufactured by the present invention.
The plastic injection molding device comprises a first upper die, a second upper die, a 2a inclined plane, a 2b boss, a 3 lower die, a 4 clamp, a 4a clamping plate, a 4b groove, a 5 injection molding die cavity, a 6 first sliding block, a 7 second sliding block, a 8 first inserting plate, a 8a first gap, a 9 second inserting plate, a 9a second gap, a 10 copper bar, 11 plastic parts, 11a through holes and 12 sealing rubber, wherein the 1 first upper die, the 2 second upper die, the 2a inclined plane, the 2b boss, the 3 lower die, the 4 clamp, the 4a clamping plate, the 4b groove, the 5 injection molding die cavity, the 6 first sliding block, the 7 second sliding block, the 8 first inserting plate, the 8a first gap, the 9 second inserting plate, the 9a second gap, the 10 copper bar, the 11 plastic parts, the 11a through holes and the 12 sealing rubber are arranged in a mode.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
As shown in fig. 1-4, a high temperature resistant copper bar injection mold for a new energy automobile three-electric product comprises a first upper mold 1 and a lower mold 3, wherein a first jack is arranged in the middle of the first upper mold 1, a second upper mold 2 is inserted into the jack and fixed on the first upper mold 1 through screws, three second jacks are arranged in the center of the second upper mold 2, three clamps 4 for clamping a copper bar 10 are inserted into the three second jacks, each clamp 4 is formed by splicing two clamping plates 4a, a groove 4b for placing the copper bar 10 is arranged on one clamping plate 4a, inclined surfaces 2a are processed on two sides of the second jack, an injection mold cavity 5 is formed among the first upper mold 1, the second upper mold 2, the lower mold 3 and the clamps 4, a first slide block 6 and a second slide block 7 are arranged on two sides of the first upper mold 1 and the lower mold 3 and inserted from the splicing surfaces, a first inserting plate 8 inserted into the injection mold cavity 5 and abutting against the copper bar 10 is arranged on the end portion of the first slide block 6, the first insert plate 8 can be directly formed on the first slide block 6 in the process of processing the first slide block 6, such as stamping, injection molding or other forms, or can be installed at the end of the first slide block 6 by a movable assembly manner (such as a T-shaped groove formed on the first slide block 6 by matching with the first insert plate 8 with a T-shaped structure), the end of the second slide block 7 is provided with a second insert plate 9 inserted into the mold cavity and abutting against the copper bar 10, the second insert plate 9 can be directly formed on the second slide block 7 in the process of processing the second slide block 7, such as stamping, injection molding or other forms, or can be installed at the end of the second slide block 7 by a movable assembly manner (such as a T-shaped groove formed on the second slide block 7 by matching with the second insert plate 9 with a T-shaped structure), the first insert plate 8 and the second insert plate 9 are symmetrically arranged at two sides of the copper bar 10 and divide the mold cavity into an upper and a lower half, the mold further comprises a third slide block and a fourth slide block (not shown in the figure) for replacing the first slide block 6 and the second slide block 7, the end parts of the third sliding block and the fourth sliding block are not provided with inserting plates.
The bottom surface of the second upper die 2 is provided with a boss 2b which is butted against the first insert plate 8 and the second insert plate 9 and can be round, square or other shapes.
A first notch 8a is formed in the first inserting plate 8, a second notch 9a is formed in the second inserting plate 9, and the first notch 8a and the second notch 9a are staggered.
The injection molding method of the high-temperature-resistant copper bar 10 for the three-electric product of the new energy automobile comprises the following steps of:
1) fixing a first upper die 1 and a second upper die 2, clamping three copper bars 10 to be subjected to injection molding by using a clamp 4, and then inserting the copper bars into a second jack;
2) controlling the first upper die 1, the second upper die 2, the lower die 3, the first slide block 6 and the second slide block 7 to be matched;
3) controlling the temperature, and injecting plastic under pressure until the plastic is completely filled;
4) after cooling, withdrawing the first slide block 6 and the second slide block 7, moving the second upper die 2 upwards to expose the through hole 11a formed by the boss 2b, and inserting a third slide block without the first inserting plate 8 and a fourth slide block without the second inserting plate 9;
3) and injecting rubber under pressure until the copper bar is completely filled, and demolding after cooling to obtain the high-temperature-resistant high-sealing-performance copper bar 10.
As shown in fig. 5 to 8, for the copper bar 10 structure manufactured by the present invention, the copper bar 10 is wrapped in the plastic member 11, the middle portion of the plastic member 11 is provided with a transverse through hole, the transverse through hole is a flat hole, the copper bar 10 longitudinally passes through the transverse through hole, the transverse through hole is filled with the sealing rubber 12, the plastic member 11 is provided with a through hole 11a communicating the transverse through hole along the vertical direction, and the sealing effect can be simultaneously completed for a plurality of copper bars 10 at one time.
The copper bar 10 can be installed on a new energy automobile three-electric product for use. According to the invention, the first inserting plate 8 and the second inserting plate 9 are used for forming the transverse through hole in the plastic one-time injection molding process of the copper bar 10 plastic insert, the transverse through hole is divided into an upper part and a lower part, the sealing rubber 12 is filled in the transverse through hole, the sealing rubber 12 is not influenced by the temperature of the copper bar 10, the problem of gap leakage caused by expansion and contraction or injection molding defects can be well solved, the leakage risk of products is permanently solved, the production cost and the production period are greatly reduced, the structure of the copper bar 10 injection molding part is simple, the assembly of the copper bar 10 can be rapidly realized, and the copper bar 10 injection molding part is more suitable for narrow space arrangement.
The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. The high-temperature-resistant copper bar injection mold for the three electric products of the new energy automobile is characterized by comprising a first upper mold (1) and a lower mold (3), wherein a first jack is formed in the middle of the first upper mold (1), a second upper mold (2) is inserted in the jack, a second jack is formed in the center of the second upper mold (2), a clamp (4) used for clamping a copper bar (10) is inserted in the second jack, an injection mold cavity (5) is formed between the first upper mold (1), the second upper mold (2), the lower mold (3) and the clamp (4), a first sliding block (6) and a second sliding block (7) which are inserted from a splicing surface are arranged on two sides of the first upper mold (1) and the lower mold (3), a first inserting plate (8) which is inserted in the injection mold cavity (5) and supports the copper bar (10) is arranged at the end part of the first sliding block (6), a second inserting plate (9) which is inserted in the mold cavity and supports the copper bar (10) is arranged at the end part of the second sliding block (7), the first inserting plate (8) and the second inserting plate (9) are symmetrically arranged on two sides of the copper bar (10) and divide the die cavity into an upper half part and a lower half part, the die further comprises a third sliding block and a fourth sliding block which replace the first sliding block (6) and the second sliding block (7), and no inserting plate is arranged at the end parts of the third sliding block and the fourth sliding block.
2. The high-temperature-resistant copper bar injection mold for the three electric products of the new energy automobile as claimed in claim 1, wherein the clamp (4) is formed by splicing two clamping plates (4a), one clamping plate (4a) is provided with a groove (4b) for placing the copper bar (10), and two sides of the second insertion hole are provided with inclined surfaces (2 a).
3. The high-temperature-resistant copper bar injection mold for the three electric products of the new energy automobile as recited in claim 1 or 2, wherein a boss (2b) which is abutted against the first insert plate (8) and the second insert plate (9) is formed on the bottom surface of the second upper mold (2).
4. The high-temperature-resistant copper bar injection mold for the three electric products of the new energy automobile as recited in claim 1 or 2, wherein a first notch (8a) is formed in the first insert plate (8), a second notch (9a) is formed in the second insert plate (9), and the first notch (8a) and the second notch (9a) are staggered.
5. The high-temperature-resistant copper bar injection molding method for the three-electric product of the new energy automobile adopts the injection mold according to claim 1, and is characterized by comprising the following steps of:
1) fixing a first upper die (1) and a second upper die (2), clamping three copper bars (10) to be subjected to injection molding by using a clamp (4) and then inserting the copper bars into a second jack;
2) controlling the first upper die (1), the second upper die (2), the lower die (3), the first sliding block (6) and the second sliding block (7) to be matched;
3) controlling the temperature, and injecting plastic under pressure until the plastic is completely filled;
4) after cooling, withdrawing the first slide block (6) and the second slide block (7), and inserting a third slide block without the first inserting plate (8) and a fourth slide block without the second inserting plate (9);
3) and injecting rubber under pressure until the copper bar is completely filled, and demolding after cooling to obtain the high-temperature-resistant high-sealing copper bar (10).
6. The injection molding method of the high-temperature-resistant copper bar for the three-electric product of the new energy automobile adopts the injection mold according to claim 1, and is characterized in that the second upper mold (2) is moved upwards to expose the through hole (11a) formed by the boss (2b) when the first sliding block (6) and the second sliding block (7) are withdrawn in the step 4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288590.7A CN114701125B (en) | 2022-03-23 | 2022-03-23 | High-temperature-resistant copper bar injection mold and process for new energy automobile three-electric product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210288590.7A CN114701125B (en) | 2022-03-23 | 2022-03-23 | High-temperature-resistant copper bar injection mold and process for new energy automobile three-electric product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114701125A true CN114701125A (en) | 2022-07-05 |
| CN114701125B CN114701125B (en) | 2023-11-24 |
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|---|---|---|---|
| CN202210288590.7A Active CN114701125B (en) | 2022-03-23 | 2022-03-23 | High-temperature-resistant copper bar injection mold and process for new energy automobile three-electric product |
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| CN (1) | CN114701125B (en) |
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