CN110948910A - Multi-mold-core molding forming mold for vehicle battery bracket and forming method thereof - Google Patents
Multi-mold-core molding forming mold for vehicle battery bracket and forming method thereof Download PDFInfo
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- CN110948910A CN110948910A CN201911264192.6A CN201911264192A CN110948910A CN 110948910 A CN110948910 A CN 110948910A CN 201911264192 A CN201911264192 A CN 201911264192A CN 110948910 A CN110948910 A CN 110948910A
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- die
- forming
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- 238000000465 moulding Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000012783 reinforcing fiber Substances 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 6
- 229920002748 Basalt fiber Polymers 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011347 resin Substances 0.000 abstract description 16
- 229920005989 resin Polymers 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000001721 transfer moulding Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 239000003733 fiber-reinforced composite Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000010959 steel Substances 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/46—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
- B29C70/48—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM], e.g. by vacuum
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- 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
Abstract
The invention relates to the technical field of vacuum auxiliary molding, in particular to a vehicle battery bracket multi-mold core mold molding mold and a molding method thereof, wherein the molding mold comprises a molding male mold, a molding female mold, a left outer mold core, a right outer mold core, a left inner mold core, a right inner mold core, a front mold core and a rear mold core; the mold cavity is composed of a plurality of combined mold cores which are mutually matched and positioned, and can be used for forming a composite material part with a complex special-shaped section; and through the combination of the mold cores with different sizes and configurations, various composite material parts can be flexibly formed, the manufacturing cost of the mold is greatly reduced, the operation is simple, and the parts are convenient to take out; in addition, in the molding process, the vacuum negative pressure of the mold cavity can effectively discharge the gas in the mold cavity, and the pressure difference formed by the vacuum negative pressure and the injection pressure of the resin fluid pushes the resin to flow, so that the defects of air bubbles, dry spots and the like easily generated by an RTM (resin transfer molding) method can be effectively avoided.
Description
Technical Field
The invention belongs to the technical field of molding and forming, and particularly relates to a multi-mode core mold molding and forming mold for a vehicle storage battery bracket and a molding method thereof.
Background
Along with the environmental protection requirements of energy conservation, emission reduction, greenhouse effect reduction and the like, increasingly strict performance requirements in various aspects such as fuel economy, environmental protection recovery, tail gas emission and the like are provided for parts in the automobile industry. Meanwhile, in the face of increasingly intense market competition, the model changing and upgrading speed of automobile manufacturers is continuously improved, and the production of matched parts also shows the customized trend of small batch and multiple varieties.
Compared with the traditional steel parts, the fiber reinforced composite material parts have the advantages of light weight, high specific strength, flexible design, easy realization of function integration and the like, and accord with the light weight development trend of the automobile industry. At present, resin transfer molding (RTM for short) of resin-based fiber reinforced composite materials belongs to closed mold production, is beneficial to environmental protection, has low mold cost, is suitable for production modes of medium-sized and small-sized batches and various products, has high product quality, and is considered to be one of the future main composite material production methods. However, for a component with a high degree of structural and functional integration and a complex irregular cross section, due to the limitation of resin flow performance, a complex resin injection system is usually required to be designed, resin flow prediction and control are difficult in the molding process, the degree of fit between fiber placement and a mold profile is poor, and the formation of molding defects such as air bubbles and dry spots is difficult to avoid. Therefore, in order to meet the market requirements of resin-based fiber reinforced composite material parts on small-batch, multi-variety and high-quality, a novel RTM (resin transfer molding) method needs to be designed and developed.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the RTM forming method which is suitable for the shell type components with the complicated special-shaped cross sections, has high quality and low cost, and can effectively solve the problem of the existing RTM forming method of the resin-based fiber reinforced composite material.
The technical scheme adopted by the invention for solving the technical problem is that the multi-mode core mould plastic forming mould for the vehicle storage battery bracket comprises a forming male mould, a forming female mould, a left side outer mould core, a right side outer mould core, a left side inner mould core, a right side inner mould core, a front side mould core and a rear side mould core; the top surfaces of the left inner mold core and the right inner mold core are both processed into a wavy configuration, trapezoidal convex edges are processed on the side surfaces of the left inner mold core and the right inner mold core, the length of each trapezoidal convex edge is equal to that of each of the left inner mold core and the right inner mold core, and the inner side surfaces of the left inner mold core and the right inner mold core are both processed with a certain inclination; corresponding trapezoidal grooves are processed on two sides of the top surface of the forming male die, the length of each trapezoidal groove is equal to that of each trapezoidal convex rib, a certain inclination is processed on the two side surfaces of the forming male die, and the inclination value of each inclination is equal to that of the inner side surfaces of the left inner die core and the right inner die core; the left inner mold core and the right inner mold core are assembled and positioned through the trapezoidal convex ribs, the trapezoidal grooves of the forming male mold and the side surface slopes, and the lower surface of the mold cavity is formed together; the bottoms of the left inner mold core and the right inner mold core are respectively provided with full-length edges, and a sealed space with gaps is formed by the full-length edges, the left outer mold core and the right outer mold core, surrounds the bottom of the forming male mold for a circle and is connected with two vacuumizing through holes symmetrically arranged at two sides of the forming female mold; the inner side surface of the forming female die is also provided with grooves with the same inclination, and the inclined surfaces and the grooves are matched and positioned with each other; positioning bosses are machined on the front side surface and the rear side surface of the forming male die and are respectively assembled and positioned with the front side die core and the rear side die core; the front side mold core, the rear side mold core, the left side outer mold core, the right side outer mold core and the forming female mold form the upper surface of the mold cavity together.
The multi-mold-core molding method for the vehicle battery bracket utilizes the multi-mold-core molding mold for the vehicle battery bracket, and comprises the following steps:
firstly, the forming male die is fixedly installed, and the left inner die core and the right inner die core are assembled and positioned through the trapezoidal convex ribs, the trapezoidal grooves of the forming male die and the side surface slopes;
secondly, laying reinforcing fibers on the lower surface of a mold cavity formed after assembly, installing the left outer mold core and the right outer mold core on the outer side surfaces of the left inner mold core and the right inner mold core on which the reinforcing fibers are laid, and respectively installing the front mold core and the rear mold core on positioning bosses on the front side surface and the rear side surface of the molding male mold;
and thirdly, mounting the forming female die on the forming male die.
Further, the reinforced fiber material is fabric, cloth or felt, and the reinforced fiber is glass fiber, basalt fiber or carbon fiber.
Through the design scheme, the invention can bring the following beneficial effects: the mold cavity is composed of a plurality of combined mold cores which are mutually matched and positioned, and can be used for forming a composite material part with a complex special-shaped section; and through the mold core combination of different sizes, configuration, can form multiple combined material finished piece in a flexible way, greatly reduced mould manufacturing cost, easy operation, the finished piece is taken out conveniently. In addition, in the molding process, the vacuum negative pressure of the mold cavity can effectively discharge the gas in the mold cavity, and the vacuum negative pressure and the injection pressure of the resin fluid form a pressure difference together to push the resin to flow, so that the defects of air bubbles, dry spots and the like easily generated by an RTM (resin transfer molding) method can be effectively avoided.
Drawings
FIG. 1 is a schematic view of a multi-core molding die for a vehicle battery bracket according to the present invention.
FIG. 2 is a side view of the multi-core molding die for a vehicle battery bracket according to the present invention.
In the figure: 1. the device comprises a forming male die, 2 a forming female die, 3 a left side inner die core, 4 a left side outer die core, 5 a vehicle battery bracket shell, 6 a right side inner die core, 7 a right side outer die core, 8 a front side die core, 9 a rear side die core, 10 a vacuumizing through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, and it should be understood that the specific examples described herein are only for the purpose of explaining the present invention and are not intended to limit the present invention.
As shown in fig. 1 and 2, the multi-mold-core molding mold for the automotive battery bracket comprises a molding male mold 1, a molding female mold 2, a left outer mold core 4, a right outer mold core 7, a left inner mold core 3, a right inner mold core 6, a front mold core 8 and a rear mold core 9; the top surfaces of the left inner mold core 3 and the right inner mold core 6 are both processed into a wavy configuration, the side surfaces of the left inner mold core 3 and the right inner mold core 6 are both processed with trapezoidal convex edges, the length of the trapezoidal convex edges is equal to that of the left inner mold core 3 and the right inner mold core 6, and the inner side surfaces of the left inner mold core 3 and the right inner mold core 6 are both processed with certain slopes; corresponding trapezoidal grooves are processed on two sides of the top surface of the forming male die 1, the length of each trapezoidal groove is equal to that of each trapezoidal convex rib, a certain inclination is processed on the two side surfaces of the forming male die 1, and the inclination value of each trapezoidal groove is equal to that of the inner side surfaces of the left inner die core 3 and the right inner die core 6; the left inner mold core 3 and the right inner mold core 6 are assembled and positioned through the trapezoidal convex ribs, the trapezoidal grooves of the forming male mold 1 and the side surface slopes to jointly form the lower surface of the mold cavity; the bottoms of the left inner mold core 3 and the right inner mold core 6 are respectively provided with full-length edges, and after being assembled with the forming female mold 2, the left outer mold core 4 and the right outer mold core 7, a sealed space with a certain gap is formed together, surrounds the bottom of the forming male mold 1 for a circle, and is connected with two vacuumizing through holes 10 symmetrically arranged at two sides of the forming female mold 2; the top surfaces of the left outer mold core 4 and the right outer mold core 7 are processed into inclined surfaces on one side, grooves with the same inclination are also processed on the inner side surface of the forming female mold 2, and the inclined surfaces and the grooves are matched for positioning; positioning bosses are machined on the front side surface and the rear side surface of the forming male die 1 and are respectively assembled and positioned with the front side die core 8 and the rear side die core 9; the front side mold core 8, the rear side mold core 9, the left side outer mold core 4, the right side outer mold core 7 and the forming female mold 2 form the upper surface of the mold cavity together.
The multi-mold-core molding method for the vehicle battery bracket utilizes the multi-mold-core molding mold for the vehicle battery bracket, and comprises the following steps:
firstly, the forming male die 1 is installed and fixed, and the left inner die core 3 and the right inner die core 6 are assembled and positioned through the trapezoidal convex ribs, the trapezoidal grooves of the forming male die 1 and the side surface inclination;
secondly, laying reinforcing fibers on the lower surface of a mold cavity formed after assembly, installing the left outer mold core 4 and the right outer mold core 7 on the outer side surfaces of the left inner mold core 3 and the right inner mold core 6 on which the reinforcing fibers are laid, and installing the front mold core 8 and the rear mold core 9 on positioning bosses on the front side surface and the rear side surface of the molding male mold 1 respectively;
and a third part for mounting the molding female die 2 on the molding male die 1.
Further, the reinforced fiber material is fabric, cloth or felt, and the reinforced fiber is glass fiber, basalt fiber or carbon fiber.
The specific production process is as follows: firstly, the forming male die 1 is installed and fixed, and the left inner die core 3 and the right inner die core 6 are assembled and positioned through the trapezoidal convex ribs, the trapezoidal grooves of the forming male die 1 and the side surface inclination; then, according to the specific size of the automobile storage battery bracket shell 5, reinforcing fibers are laid on the lower surface of a mold cavity formed after assembly, the used fiber reinforcing materials can be in different forms such as fabrics, cloth and felts, the types of the fibers can adopt different types such as glass fibers, basalt fibers and carbon fibers, after the reinforcing fibers reach a certain thickness, the left outer mold core 4 and the right outer mold core 7 are installed on the outer side surfaces of the left inner mold core 3 and the right inner mold core 6 on which the reinforcing fibers are laid, and the front mold core 8 and the rear mold core 9 are respectively installed on positioning bosses on the front side surface and the rear side surface of the molding male mold 1; finally, the forming female die 2 is mounted on the forming male die 1, and at the moment, the overall assembly of the forming die is finished. Forming two annular sealing contact surfaces in a forming die, wherein the first annular sealing contact surface is formed by a deep groove corresponding to the outer edge of the forming female die 2 and the outer edge of the forming male die 1 and is used for ensuring that the forming die is in a sealing state in the forming process; the second annular sealing contact surface is formed by the bottom boss shallow groove of the forming convex die 1, the left outer die core 4, the right outer die core 7, the left inner die core 3, the right inner die core 6 and the surface of the forming concave die 2, is connected with a vacuumizing through hole 10 arranged on the forming concave die 2, and is used for ensuring the gas in the die cavity to be discharged and improving the resin flowing capacity in the resin injection process.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The multi-mold-core molding forming mold for the vehicle battery bracket is characterized in that: comprises a forming male die (1), a forming female die (2), a left outer die core (4), a right outer die core (7), a left inner die core (3), a right inner die core (6), a front side die core (8) and a rear side die core (9); the top surfaces of the left inner mold core (3) and the right inner mold core (6) are both processed into a wavy configuration, the side surfaces of the left inner mold core (3) and the right inner mold core (6) are both processed with trapezoidal convex edges, the length of the trapezoidal convex edges is equal to that of the left inner mold core (3) and the right inner mold core (6), and the inner side surfaces of the left inner mold core (3) and the right inner mold core (6) are both processed with a certain inclination; corresponding trapezoidal grooves are processed on two sides of the top surface of the forming convex die (1), the length of each trapezoidal groove is equal to that of each trapezoidal convex rib, a certain inclination is processed on the two side surfaces of the forming convex die (1), and the inclination value of each inclination is equal to that of the inner side surfaces of the left inner die core (3) and the right inner die core (6); the left inner mold core (3) and the right inner mold core (6) are assembled and positioned through the trapezoidal convex ribs, the trapezoidal grooves of the forming male mold (1) and the side surface slopes to jointly form the lower surface of the mold cavity; the bottoms of the left inner mold core (3) and the right inner mold core (6) are respectively provided with full-length edges, and a sealed space with gaps is formed by the full-length edges, the left outer mold core (4) and the right outer mold core (7), surrounds the bottom of the forming male mold (1) for one circle and is connected with two vacuumizing through holes (10) symmetrically arranged on two sides of the forming female mold (2); the top surfaces of the left outer mold core (4) and the right outer mold core (7) are processed into inclined surfaces, grooves with the same inclination are also processed on the inner side surface of the forming female mold (2), and the inclined surfaces and the grooves are matched with each other for positioning; positioning bosses are machined on the front side surface and the rear side surface of the forming male die (1) and are respectively assembled and positioned with the front side die core (8) and the rear side die core (9); the front side mold core (8), the rear side mold core (9), the left side outer mold core (4), the right side outer mold core (7) and the forming female mold (2) jointly form the upper surface of the mold cavity.
2. The multi-mold-core molding method for the vehicle battery bracket, which utilizes the multi-mold-core molding mold for the vehicle battery bracket as set forth in claim 1, is characterized in that: the method comprises the following steps:
firstly, the forming male die (1) is installed and fixed, and the left inner die core (3) and the right inner die core (6) are assembled and positioned through the trapezoidal convex edges, the trapezoidal grooves of the forming male die (1) and the side surface slopes;
secondly, laying reinforcing fibers on the lower surface of a mold cavity formed after assembly, installing the left outer mold core (4) and the right outer mold core (7) on the outer side surfaces of the left inner mold core (3) and the right inner mold core (6) on which the reinforcing fibers are laid, and installing the front mold core (8) and the rear mold core (9) on positioning bosses on the front side surface and the rear side surface of the forming male mold (1) respectively;
and thirdly, mounting the forming female die (2) on the forming male die (1).
3. The molding method of the multi-mold core of the battery bracket for the vehicle as claimed in claim 2, wherein: the reinforced fiber material is fabric, cloth or felt, and the reinforced fiber is glass fiber, basalt fiber or carbon fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911264192.6A CN110948910A (en) | 2019-12-11 | 2019-12-11 | Multi-mold-core molding forming mold for vehicle battery bracket and forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911264192.6A CN110948910A (en) | 2019-12-11 | 2019-12-11 | Multi-mold-core molding forming mold for vehicle battery bracket and forming method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110948910A true CN110948910A (en) | 2020-04-03 |
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| CN201911264192.6A Pending CN110948910A (en) | 2019-12-11 | 2019-12-11 | Multi-mold-core molding forming mold for vehicle battery bracket and forming method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114248473A (en) * | 2021-12-20 | 2022-03-29 | 中国电子科技集团公司第十四研究所 | Carbon fiber machine case shaping mold core structure |
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