Bidirectional synchronous side core-pulling demoulding mechanism for front wheel mud plate of electric vehicle
By designing a bidirectional synchronous side-pulling demolding mechanism for electric vehicle front wheel mudguards, and utilizing a pull-out assembly and a slanted ejector rod, the problem of low demolding efficiency in existing molds was solved, enabling rapid side demolding of electric vehicle front wheel mudguards and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIZHOU HUANGYAN BODA AUTOMOBILE CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-05
AI Technical Summary
The existing injection molds for electric vehicle front wheel mudguards are inefficient during the demolding process, mainly because ejector pin demolding affects the side demolding effect.
A bidirectional synchronous side-pulling demolding mechanism for the front wheel mudguard of an electric vehicle was designed. Through the cooperation of the pull-out component and the inclined ejector rod, the outer movement of the molded block and rapid demolding are realized. The demolding process is controlled by a hydraulic system.
It improved the production efficiency of electric vehicle front wheel mudguards and achieved rapid and stable side demolding.
Smart Images

Figure CN224197256U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of electric vehicle parts processing technology, and relates to a bidirectional synchronous side core-pulling and demolding mechanism for electric vehicle front wheel mudguards. Background Technology
[0002] Electric vehicle front wheel mudguards are one of the current electric vehicle accessories. Electric vehicle front wheel mudguards are generally made of plastic parts. Plastic parts are mainly processed by injection molding through the cooperation of injection molds and injection molding machines to achieve the injection molding of electric vehicle front wheel mudguards.
[0003] Currently, the injection molds for electric vehicle front wheel mudguards suffer from several drawbacks during demolding. Due to the curved design of the mudguards, demolding is only performed using ejector pins. This method of ejector pin demolding affects the side demolding of the electric vehicle front wheel mudguards, thus impacting the demolding efficiency. To address these issues, we designed a bidirectional synchronous side core-pulling demolding mechanism for electric vehicle front wheel mudguards. Summary of the Invention
[0004] The purpose of this invention is to provide a bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle, so as to solve the problems mentioned in the background art.
[0005] The objective of this utility model can be achieved through the following technical solution: a bidirectional synchronous side core-pulling demolding mechanism for electric vehicle front wheel mudguards, comprising a lower mounting base and an upper mounting base. A lower mold base is fixedly mounted on the top of the lower mounting base, and an upper mold base adapted to the lower mold base is fixedly mounted on the bottom of the upper mounting base. A glue injection nozzle is provided on the top of the upper mounting base. A cavity is opened on the top of the lower mold base, and molding blocks that can move outward are provided on both sides of the cavity. Pull-out assemblies are fixedly provided on both sides of the outer wall of the lower mold base. The pull-out assemblies are fixedly connected to the side walls of the molding blocks. A lifting connecting plate is provided at the bottom of the lower mounting base, and multiple inclined push rods are fixedly mounted on the top of the connecting plate. The tops of the multiple inclined push rods extend into the cavity.
[0006] In the aforementioned bidirectional synchronous side core-pulling demolding mechanism for the front wheel mudguard of an electric vehicle, the pulling assembly includes two pull rods, a first inclined block, a second inclined block, and a U-shaped block. The U-shaped block is fixedly connected to the outer wall of the lower mold base. The interior of the U-shaped block is provided with two first inclined blocks and a second inclined block. The side of the second inclined block is provided with a pull rod connecting groove. Two pull rods are inserted and connected to the side of the lower mold base. The ends of the two pull rods are fixedly connected to the side of the forming block, and the other ends of the two pull rods are fixedly connected to the pull rod connecting groove.
[0007] In the above-mentioned bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle, a hydraulic cylinder connecting groove is fixedly installed on the side of the first inclined block, an mounting plate is fixedly installed on one side of the U-shaped block, and an electric hydraulic cylinder is fixedly installed at the center of the mounting plate. The telescopic end of the electric hydraulic cylinder is fixedly connected to the hydraulic cylinder connecting groove.
[0008] In the above-mentioned bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle, a T-shaped groove is provided on the inclined surface of the first inclined block, and a T-shaped slider is fixedly provided on the inclined surface of the second inclined block. The T-shaped slider is slidably connected to the corresponding T-shaped groove.
[0009] In the above-mentioned bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of the electric vehicle, the top and bottom ends of the first inclined block are provided with limit grooves, and the two sides of the inner wall of the U-shaped block are fixedly provided with limit strips, which are slidably connected to the limit grooves.
[0010] In the above-mentioned bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of the electric vehicle, an electric push rod is fixedly provided at the center of the bottom end of the lower mounting base, and the electric push rod is fixedly connected to the center of the bottom end of the connecting plate.
[0011] In the above-mentioned bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle, a convex locking module is fixedly provided at the center of each of the four sides of the top of the lower mold base, and a U-shaped locking module is fixedly provided at the center of each of the four sides of the bottom of the upper mold base. The protrusion of the convex locking module is inserted into the recess of the U-shaped locking module.
[0012] Compared with the prior art, the advantages of the bidirectional synchronous side core-pulling demolding mechanism for electric vehicle front wheel mudguards of this utility model are as follows: During the injection molding process, the two pulling components pull the molding blocks on both sides outward, which can separate them from the side of the molded electric vehicle front wheel mudguard. Then, with the cooperation of multiple inclined push rods, the electric vehicle front wheel mudguard can be demolded quickly, which improves the production efficiency of electric vehicle front wheel mudguards. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to this utility model.
[0014] Figure 2 This is a side structural diagram of the bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to this utility model.
[0015] Figure 3 This is a schematic diagram of the lower mold base structure of the bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to this utility model.
[0016] Figure 4 This is a schematic diagram of the front structure of the lower mold base of the bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to this utility model.
[0017] Figure 5 This is a top view of the lower mold base of the bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to this utility model.
[0018] Figure 6 This is a schematic diagram of the electric hydraulic cylinder connection structure of the bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to this utility model.
[0019] Figure 7 This is a schematic diagram of the connection structure between the first inclined block and the second inclined block of the bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to this utility model.
[0020] In the diagram, 1. Lower mounting base; 2. Upper mounting base; 3. Injection nozzle; 4. Lower mold base; 5. Upper mold base; 6. U-shaped block; 7. Mounting plate; 8. Electric hydraulic cylinder; 9. U-shaped lock module; 10. Convex lock module; 11. Pull rod; 12. Molding block; 13. First inclined block; 14. Second inclined block; 15. Pull rod connecting groove; 16. Hydraulic cylinder connecting groove; 17. T-shaped slide; 18. T-shaped slider; 19. Limiting groove; 20. Inclined ejector rod; 21. Connecting plate. Detailed Implementation
[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0022] like Figure 1-7 As shown, the present invention relates to a bidirectional synchronous side core-pulling demolding mechanism for the front wheel mudguard of an electric vehicle, comprising a lower mounting base 1 and an upper mounting base 2. A lower mold base 4 is fixedly mounted on the top of the lower mounting base 1, and an upper mold base 5 adapted to the lower mold base 4 is fixedly mounted on the bottom of the upper mounting base 2. An injection nozzle 3 is provided on the top of the upper mounting base 2. A cavity is opened on the top of the lower mold base 4, and molding blocks 12 that can move outward are provided on both sides of the cavity. Pull-out components are fixedly provided on both sides of the outer wall of the lower mold base 4, and the pull-out components are fixedly connected to the side walls of the molding blocks 12. A lifting connecting plate 21 is provided at the bottom of the lower mounting base 1, and multiple inclined push rods 20 are fixedly mounted on the top of the connecting plate 21, with the tops of the multiple inclined push rods 20 extending into the cavity.
[0023] Specifically, during the injection molding process, the front wheel mudguard of the electric vehicle is separated from the sides by two pull-out components, which can be achieved by separating the molded blocks 12 on both sides. Then, with the cooperation of multiple inclined push rods 20, the front wheel mudguard of the electric vehicle can be quickly demolded, which improves the production efficiency of the front wheel mudguard of the electric vehicle.
[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the present invention relates to a bidirectional synchronous side core-pulling demolding mechanism for the front wheel mudguard of an electric vehicle. The pull-out assembly includes two pull rods 11, a first inclined block 13, a second inclined block 14, and a U-shaped block 6. The U-shaped block 6 is fixedly connected to the outer wall of the lower mold base 4. The interior of the U-shaped block 6 is provided with two first inclined blocks 13 and second inclined blocks 14. The side of the second inclined block 14 is provided with a pull rod connecting groove 15. Two pull rods 11 are inserted and connected to the side of the lower mold base 4. The ends of the two pull rods 11 are fixedly connected to the side of the forming block 12, and the other ends of the two pull rods 11 are fixedly connected to the pull rod connecting groove 15.
[0025] Specifically, the movement of the molding block 12 is controlled by the pull rod 11, so that the molding block 12 can engage and disengage from the mold cavity, thereby achieving the demolding of the front wheel mudplate.
[0026] A hydraulic cylinder connecting groove 16 is fixedly installed on the side of the first inclined block 13, and an mounting plate 7 is fixedly installed on one side of the U-shaped block 6. An electric hydraulic cylinder 8 is fixedly installed at the center of the mounting plate 7, and the telescopic end of the electric hydraulic cylinder 8 is fixedly connected to the hydraulic cylinder connecting groove 16.
[0027] Specifically, the hydraulic cylinder connection groove 16 facilitates connection with the electric hydraulic cylinder 8.
[0028] The first inclined block 13 has a T-shaped groove 17 on its inclined surface, and the second inclined block 14 has a T-shaped slider 18 fixedly installed on its inclined surface. The T-shaped slider 18 is slidably connected to the corresponding T-shaped groove 17.
[0029] Specifically, through the cooperation of the T-shaped slider 18 and the T-shaped groove 17, when the first inclined block 13 moves, it pushes the second inclined block 14 to move.
[0030] Limiting grooves 19 are provided at the top and bottom of the first inclined block 13, and limiting strips are fixed on both sides of the inner wall of the U-shaped block 6. The limiting strips are slidably connected to the limiting grooves 19.
[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the electric vehicle front wheel mudguard bidirectional synchronous side core pulling demolding mechanism of this utility model has an electric push rod fixedly provided at the center of the bottom end of the lower mounting base 1, and the electric push rod is fixedly connected to the center of the bottom end of the connecting plate 21.
[0032] Specifically, the connecting plate 21 is raised and lowered by an electric push rod, and the raising and lowering of the connecting plate 21 drives the raising and lowering of the inclined push rod 20.
[0033] A convex locking module 10 is fixedly provided at the center of each of the four sides of the top of the lower mold base 4, and a U-shaped locking module 9 is fixedly provided at the center of each of the four sides of the bottom of the upper mold base 5. The protruding part of the convex locking module 10 is inserted into the recessed part of the U-shaped locking module 9.
[0034] Specifically, through the cooperation of the U-shaped lock module 9 and the convex lock module 10, stable mold locking is achieved when the upper mold base 5 and the lower mold base 4 are closed.
[0035] In specific implementation, when using this injection mold to produce mudguards for the front wheel of an electric vehicle, the injection mold is first installed into the injection molding machine body. Then, the lower mold base 4 and the upper mold base 5 are pushed together by the electric push rod of the injection molding machine to close the mold. During mold closing, the mold is locked by the cooperation of the U-shaped lock module 9 and the convex lock module 10. At the same time, the electric hydraulic cylinder 8 is opened, and the electric hydraulic cylinder 8 pushes the first inclined block 13 to move. The first inclined block 13 squeezes the second inclined block 14 to move to the side. The second inclined block 14 pushes the pull rod 11 to move. The pull rod 11 pushes the molding block 12 to move to the set position in the mold cavity.
[0036] When the injection molding is completed and the lower mold base 4 separates from the upper mold base 5, the electric hydraulic cylinder 8 is turned off. The electric hydraulic cylinder 8 retracts and pulls the first inclined block 13 to reset. The first inclined block 13 pulls the second inclined block 14 to move outward. The second inclined block 14 pulls the pull rod 11 to move outward. The pull rod 11 pulls the molding block 12 to move outward, so that the molding block 12 is separated from the molded front wheel mud plate. At the same time, the electric push rod pushes the connecting plate 21 to move upward. The upward movement of the connecting plate 21 pushes the inclined ejector rod 20 to move upward. The inclined ejector rod 20 pushes the front wheel mud plate to demold.
[0037] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.
Claims
1. A bidirectional synchronous side core-pulling demolding mechanism for the front wheel mudguard of an electric vehicle, comprising a lower mounting base (1) and an upper mounting base (2), wherein a lower mold base (4) is fixedly mounted on the top of the lower mounting base (1), and an upper mold base (5) adapted to the lower mold base (4) is fixedly mounted on the bottom of the upper mounting base (2), and an injection nozzle (3) is provided on the top of the upper mounting base (2), characterized in that, The lower mold base (4) has a cavity at the top, and molding blocks (12) that can move outward are provided on both sides of the cavity. Pull-out components are fixedly provided on both sides of the outer wall of the lower mold base (4). The pull-out components are fixedly connected to the side wall of the molding block (12). A lifting connecting plate (21) is provided at the bottom of the lower mounting base (1). Multiple inclined push rods (20) are fixedly installed at the top of the connecting plate (21). The tops of the multiple inclined push rods (20) extend into the cavity.
2. The bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to claim 1, characterized in that, The pull-out assembly includes two pull rods (11), a first inclined block (13), a second inclined block (14), and a U-shaped block (6). The U-shaped block (6) is fixedly connected to the outer wall of the lower mold base (4). The U-shaped block (6) has two first inclined blocks (13) and a second inclined block (14) inside. The second inclined block (14) has a pull rod connecting groove (15) on its side. The lower mold base (4) has two pull rods (11) inserted and connected to its side. The ends of the two pull rods (11) are fixedly connected to the side of the forming block (12), and the other ends of the two pull rods (11) are fixedly connected to the pull rod connecting groove (15).
3. The bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to claim 2, characterized in that, A hydraulic cylinder connecting groove (16) is fixedly installed on the side of the first inclined block (13), and an mounting plate (7) is fixedly installed on one side of the U-shaped block (6). An electric hydraulic cylinder (8) is fixedly installed at the center of the mounting plate (7), and the telescopic end of the electric hydraulic cylinder (8) is fixedly connected to the hydraulic cylinder connecting groove (16).
4. The bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to claim 3, characterized in that, The first inclined block (13) has a T-shaped groove (17) on its inclined surface, and the second inclined block (14) has a T-shaped slider (18) fixedly provided on its inclined surface. The T-shaped slider (18) is slidably connected to the corresponding T-shaped groove (17).
5. The bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to claim 4, characterized in that, The first inclined block (13) has a limit groove (19) at both the top and bottom. The inner walls of the U-shaped block (6) are fixed with limit strips on both sides, and the limit strips are slidably connected to the limit grooves (19).
6. The bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to claim 1, characterized in that, An electric push rod is fixedly provided at the center of the bottom end of the lower mounting base (1), and the electric push rod is fixedly connected to the center of the bottom end of the connecting plate (21).
7. The bidirectional synchronous side core-pulling and demolding mechanism for the front wheel mudguard of an electric vehicle according to claim 1, characterized in that, The lower mold base (4) is fixedly provided with a convex locking module (10) at the center of each of the four sides of the top end, and the upper mold base (5) is fixedly provided with a U-shaped locking module (9) at the center of each of the four sides of the bottom end. The protrusion of the convex locking module (10) is inserted into the recess of the U-shaped locking module (9).