Mold opening multi-section linkage automobile front bumper injection mold

Abstract

The utility model relates to a mold opening multi-section linkage automobile front bumper injection mold which comprises a mold core plate with a forming surface and a mold cavity plate and further comprises a demolding mechanism, the demolding mechanism is used for demolding a bumper product, and the demolding mechanism comprises an ejection seat with a forming surface, a first driving assembly, a plurality of ejection blocks with forming surfaces and a second driving assembly. The ejection seat is connected to the core plate in a sliding mode, the ejection blocks are connected to the ejection seat in a sliding mode, the first driving assembly is used for driving the ejection seat to move, the second driving assembly is used for driving the ejection blocks to slide, and when the first driving assembly drives the ejection seat to move towards the side away from the core plate, the ejection blocks move along with the ejection seat. According to the invention, the product is reserved on the cavity plate, the possibility that the product falls out of the mold and is damaged in the mold opening process is reduced, the product is gradually separated from the mold core part of the mold through multi-section linkage mold opening, and compared with forced demolding of the product, the possibility that a buckle structure on the product is strained can be reduced.

Description

Technical Field

[0001] The utility model relates to the field of bumper injection molding, in particular to an injection mold for a front bumper of an automobile with a mold opening and a multi-stage linkage. Background Art

[0002] Bumpers are installed at the front and rear ends of cars. They not only have decorative functions, but more importantly, they are safety devices that absorb and mitigate external impacts, protect the car body and the safety of passengers. With the development of the automobile industry and the extensive application of engineering plastics in the automobile industry, automobile bumpers, as an important safety device, have also taken the road of innovation. At present, in addition to maintaining the original protective function, the front and rear bumpers of cars also pursue harmony and unity with the body shape and pursue their own lightweight. The front and rear bumpers of cars are made of plastic, which people call plastic bumpers.

[0003] The utility model with publication number CN209257373U discloses an automobile bumper mold, comprising an upper fixed plate and a lower fixed plate, a mold foot is fixedly installed on the upper surface of the lower fixed plate, an ejector base plate is arranged inside the mold foot, an ejector panel is fixedly installed on the upper surface of the ejector base plate, a movable template is fixedly installed on the mold foot, a first inclined ejector block is arranged on the movable template, a second inclined ejector block is arranged on the first inclined ejector block, the first inclined ejector block, the second inclined ejector block, the movable mold insert, the movable template and the fixed template together constitute a mold cavity, an injection molded bumper is arranged on the mold cavity, and an inclined ejector rod is installed on the portion of the ejector base plate located outside the ejector panel, and the upper end of the inclined ejector rod passes through the movable template and is fixedly connected to the lower end of the first inclined ejector block.

[0004] The bumper mold in the above technical solution drives the first inclined ejector block and the second inclined ejector block to move through the movement of the ejector base plate and the ejector panel, so as to demold the automobile bumper product from the movable mold plate; however, the automobile bumper is relatively large in size, and after the mold is opened by the above solution, the finished bumper is ejected from the mold and is easily dropped, causing damage to the finished bumper. Utility Model Content

[0005] In order to reduce the damage to the finished bumper after mold opening, the present application provides a mold opening multi-stage linkage automobile front bumper injection mold.

[0006] The present application provides a multi-stage linkage automobile front bumper injection mold adopting the following technical solution:

[0007] A mold opening multi-stage linkage automobile front bumper injection mold, comprising a core plate and a cavity plate with molding surfaces, and also comprising a demoulding mechanism, wherein the demoulding mechanism is used for demoulding the bumper product, and the demoulding mechanism comprises an ejector seat with a molding surface, a first drive assembly, a plurality of ejector blocks with molding surfaces, and a second drive assembly, wherein the ejector seat is slidably connected to the core plate along the mold opening direction of the mold, and the plurality of ejector blocks are respectively slidably connected to the ejector seat along the mold opening direction of the mold, the first drive assembly is used to drive the movement of the ejector seat, and the second drive assembly is used to drive the sliding of the plurality of ejector blocks, when the first drive assembly drives the ejector seat to move toward a side away from the core plate, the plurality of ejector blocks move together with the ejector seat, and the bumper abuts against the ejector seat and the cavity plate at the same time, and when the second drive assembly drives the plurality of ejector blocks to move toward a side away from the ejector seat, the bumper abuts against the plurality of ejector blocks and the cavity plate at the same time.

[0008] By adopting the above technical scheme, during the mold opening process, the first driving component is used to drive the ejector seat to slide toward the side away from the core plate, so that the product is separated from the core plate and the product remains on the ejector seat and the cavity plate, and then the second driving component is used to drive the multiple ejector blocks to move toward the side away from the ejector seat, so that the product is separated from the ejector seat and the product remains on the multiple ejector blocks and the cavity plate. After the cavity plate continues to move toward the side away from the core plate, the product remains on the cavity plate, thereby reducing the possibility of the product falling out of the mold and being injured during the mold opening process. Moreover, through multi-stage linked mold opening, the product is gradually separated from the core part of the mold, which can reduce the possibility of the buckle structure on the product being strained compared to forced demolding of the product.

[0009] Preferably, the first driving assembly includes a plurality of first oil cylinders, an ejector plate and a plurality of ejector columns, the ejector plate is slidably connected to the core plate along the sliding direction of the ejector seat, one end of the plurality of ejector columns is fixedly connected to the ejector plate, one end of the plurality of ejector columns away from the ejector plate passes through the core plate and is fixedly connected to the ejector seat, the plurality of first oil cylinders are respectively fixedly connected to the core plate, and one end of the piston rods of the plurality of first oil cylinders are respectively fixedly connected to the ejector plate.

[0010] By adopting the above technical solution, the ejection plate is driven to reciprocate by the piston movement of the piston rod of the first oil cylinder, so that the fixed-size seat connected through the ejector column moves together with the ejection plate.

[0011] Preferably, the second driving assembly includes a plurality of second oil cylinders, a movable plate and a plurality of ejector rods, the movable plate is slidably connected between the ejector plate and the core plate along the moving direction of the ejector plate, the plurality of ejector rods respectively correspond to a plurality of ejector blocks, one end of the plurality of ejector rods is fixedly connected to the movable plate, one end of the plurality of ejector rods away from the movable plate respectively penetrates the core plate and is fixedly connected to the corresponding ejector blocks, the plurality of second oil cylinders are respectively fixedly connected to the movable plate, and one end of the piston rods of the plurality of second oil cylinders respectively penetrates the movable plate and is fixedly connected to the ejector plate.

[0012] By adopting the above technical solution, the movable plate is driven to move together by the piston movement of the piston rod of the second oil cylinder, so that the multiple ejector blocks connected by the multiple ejector rods move together with the movable plate; when the piston rod of the second oil cylinder is extended, the second oil cylinder moves toward the side away from the ejector plate, so that the movable plate fixedly connected to the second oil cylinder moves relative to the second oil cylinder.

[0013] Preferably, a plurality of limiting columns are provided on the side surface of the ejector plate close to the core plate. When the ejector plate moves toward the core plate until the limiting columns abut against the core plate, the movable plate and the two opposite side surfaces of the core plate still maintain a certain distance.

[0014] By adopting the above technical solution, the moving distance of the ejection plate is limited by the limiting column, and the space for the moving plate to move is reserved.

[0015] Preferably, a limit assembly is further included, wherein the limit assembly is used to limit the direct distance between the ejector plate and the cavity plate, the limit assembly includes a limit rod, one end of the limit rod is rotatably connected to the ejector plate along a direction perpendicular to the mold opening direction of the mold, a clamping block is provided at the end of the limit rod away from the ejector plate, and a clamping groove which can be engaged with the clamping block is provided on the cavity plate, when the first driving assembly drives the ejector plate to move toward one side of the core plate, the clamping block is always engaged with the clamping groove, and when the second driving assembly drives the sliding plate to move to one side of the core plate, the clamping block is disengaged from the clamping groove.

[0016] By adopting the above technical solution, when the first driving component drives the ejector plate to move toward the side of the core plate, the clamping block is always engaged with the clamping groove, so that the distance between the ejector plate and the cavity plate is kept the same, and the distance between the ejector plate and the cavity plate is limited, so that the bumper abuts against the ejector seat and the cavity plate at the same time; when the second driving component drives the sliding plate to move to the side of the core plate, the clamping block disengages from the clamping groove.

[0017] Preferably, a limiting slide rail is provided on the core plate, and a limiting slide groove is provided on the limiting slide rail. The limiting slide groove is closer to the core plate from one end close to the ejection plate to the end far away from the ejection plate in the length direction. A limiting wheel is provided on the side of the limiting rod, and the limiting wheel is slidably connected in the limiting slide groove along the inner wall of the limiting slide groove. When the first driving component drives the ejection plate to move toward one side of the core plate, the limiting wheel is located at the end of the limiting slide groove close to the ejection plate; when the second driving component drives the sliding plate to move to the side of the core plate, the limiting wheel is located at the end of the limiting slide groove far away from the ejection plate.

[0018] By adopting the above technical solution, when the first driving component drives the ejector plate to move toward one side of the core plate, the limiting wheel is located at one end of the limiting slide close to the ejector plate, so that the clamping block is engaged with the clamping slot to limit the distance between the ejector plate and the cavity plate; when the second driving component drives the sliding plate to move one side of the core plate, the limiting wheel is located at one end of the limiting slide away from the ejector plate, so that the end of the limiting rod with the clamping block is inserted away from the side of the core plate and rotated, and the clamping block is disengaged from the clamping slot.

[0019] The technical effects of this utility model are mainly reflected in the following aspects:

[0020] The utility model provides an ejector seat and a plurality of ejector blocks, and respectively ejects the bumper. During the mold opening process, the first driving component first drives the ejector seat to slide toward a side away from the core plate, so that the product is separated from the core plate, and the product is retained on the ejector seat and the cavity plate. Then, the second driving component drives the plurality of ejector blocks to move toward a side away from the ejector seat, so that the product is separated from the ejector seat and the product is retained on the plurality of ejector blocks and the cavity plate. After the cavity plate continues to move toward a side away from the core plate, the product is retained on the cavity plate, thereby reducing the possibility of the product falling out of the mold and being injured during the mold opening process. Moreover, through the multi-stage linked mold opening, the product is gradually separated from the core part of the mold, and compared with forced demolding of the product, the possibility of the buckle structure on the product being strained can be reduced.

[0021] 2. The utility model provides a second oil cylinder, a movable plate and a plurality of ejector rods, and the piston movement of the piston rod of the second oil cylinder drives the movable plate to move together, so that a plurality of ejector blocks connected by the plurality of ejector rods move together with the movable plate; when the piston rod of the second oil cylinder is extended, the second oil cylinder moves toward a side away from the ejector plate, so that the movable plate fixedly connected to the second oil cylinder moves relative to the second oil cylinder;

[0022] 3. The utility model sets a limit assembly. When the first driving assembly drives the ejector plate to move toward the core plate, the clamping block is always engaged with the clamping groove, so that the distance between the ejector plate and the cavity plate is kept the same, and the distance between the ejector plate and the cavity plate is limited, so that the bumper abuts against the ejector seat and the cavity plate at the same time; when the second driving assembly drives the sliding plate to move toward the core plate, the clamping block is separated from the clamping groove, that is, the ejector plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2 It is a schematic diagram of the core plate structure of an embodiment of the present application.

[0025] Figure 3 It is a schematic diagram of the demoulding mechanism structure of an embodiment of the present application.

[0026] Figure 4 It is a schematic diagram of the cavity plate structure of an embodiment of the present application.

[0027] Figure 5 It is a schematic diagram of the limit assembly mechanism of an embodiment of the present application.

[0028] Explanation of the reference numerals: 1. core plate; 11. limiting slide rail; 111. limiting slide groove; 2. cavity plate; 21. clamping groove; 3. demoulding mechanism; 31. ejector seat; 32. first drive assembly; 321. first oil cylinder; 322. ejector plate; 3221. limiting column; 323. ejector column; 33. ejector block; 34. second drive assembly; 341. second oil cylinder; 342. movable plate; 343. ejector rod; 4. limiting assembly; 41. limiting rod; 42. clamping block; 43. limiting wheel. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0030] The embodiment of the present application discloses an injection mold for a front bumper of an automobile with a multi-stage linkage mold opening.

[0031] Reference Figure 1-Figure 4The present embodiment is a mold opening multi-stage linkage automobile front bumper injection mold, comprising a core plate 1 with a molding surface and a cavity plate 2, and also comprising a demolding mechanism 3, the demolding mechanism 3 is used for demolding the bumper product, the demolding mechanism 3 comprises an ejector seat 31 with a molding surface, a first drive assembly 32, a plurality of ejector blocks 33 with molding surfaces, and a second drive assembly 34, the ejector seat 31 is slidably connected to the core plate 1 along the mold opening direction of the mold, and the plurality of ejector blocks 33 are respectively slidably connected to the ejector seat 31 along the mold opening direction of the mold, and the first drive assembly 32 is used for demolding the bumper product, and ... ejector seat 31 is used for demolding the bumper product, and the ejector seat 31 is used for demolding the bumper product, and the ejector seat 31 is used for demolding the bumper product, and the ejector seat 31 is used for demolding the bumper product, and the ejector seat 31 is used for demolding the bumper product, and the ejector seat 31 is used for demolding the bumper product, and the ejector seat 31 is used for demolding the bumper product, and the ejector seat 31 is used for demolding the bumper product, and the ejector seat 31 is used for demolding the bumper product, and the ejector seat 31 is The driving assembly 32 is used to drive the movement of the ejector seat 31, and the second driving assembly 34 is used to drive the sliding of the multiple ejector blocks 33. When the first driving assembly 32 drives the ejector seat 31 to move toward the side away from the core plate 1, the multiple ejector blocks 33 move together with the ejector seat 31, and the bumper abuts against the ejector seat 31 and the cavity plate 2 at the same time. When the second driving assembly 34 drives the multiple ejector blocks 33 to move toward the side away from the ejector seat 31, the multiple ejector blocks detach from the bumper and abut against the multiple ejector blocks 33 and the cavity plate 2 at the same time.

[0032] Reference Figure 1-Figure 4 During the mold opening process, the first driving component 32 first drives the ejector seat 31 to slide toward the side away from the core plate 1, so that the product is separated from the core plate 1, and the product remains on the ejector seat 31 and the cavity plate 2, and then the second driving component 34 drives the multiple ejector blocks 33 to move toward the side away from the ejector seat 31, so that the product is separated from the ejector seat 31 and the product remains on the multiple ejector blocks 33 and the cavity plate 2. After the cavity plate 2 continues to move toward the side away from the core plate 1, the product remains on the cavity plate 2, reducing the possibility of the product falling out of the mold and getting injured during the mold opening process, and through multi-stage linked mold opening, the product is gradually separated from the core part of the mold, which can reduce the possibility of the buckle structure on the product being strained compared to forced demolding of the product.

[0033] Reference Figure 1-Figure 3The first driving assembly 32 includes multiple first oil cylinders 321, an ejector plate 322 and multiple ejector columns 323. The ejector plate 322 is slidably connected to the core plate 1 along the sliding direction of the ejector seat 31. One end of the multiple ejector columns 323 is fixedly connected to the ejector plate 322. One end of the multiple ejector columns 323 away from the ejector plate 322 passes through the core plate 1 and is fixedly connected to the ejector seat 31. The multiple first oil cylinders 321 are respectively fixedly connected to the core plate 1, and one end of the piston rods of the multiple first oil cylinders 321 are respectively fixedly connected to the ejector plate 322. The ejector plate 322 is driven to reciprocate by the piston movement of the piston rod of the first oil cylinder 321, so that the fixed-size seat connected by the ejector column 323 moves together with the ejector plate 322; during the mold opening process, the piston rod of the first oil cylinder 321 is retracted, so that the ejector plate 322 moves toward the side of the core plate 1, and drives the ejector seat 31 to move toward the side away from the core plate 1; during the mold closing process, the piston rod of the first oil cylinder 321 is extended, so that the ejector plate 322 moves toward the side away from the core plate 1, and drives the ejector seat 31 to move toward the side of the core plate 1.

[0034] Reference Figure 1-Figure 3 The second driving assembly 34 includes multiple second oil cylinders 341, a moving plate 342 and multiple ejector rods 343. The moving plate 342 is slidably connected between the ejector plate 322 and the core plate 1 along the moving direction of the ejector plate 322. Multiple ejector columns 323 are respectively penetrated through the moving plate 342 to guide the movement of the moving plate 342. Multiple ejector rods 343 respectively correspond to multiple ejector blocks 33. One end of the multiple ejector rods 343 is fixedly connected to the moving plate 342. One end of the multiple ejector rods 343 away from the moving plate 342 is respectively penetrated through the core plate 1 and fixedly connected to the corresponding ejector block 33. Multiple second oil cylinders 341 are respectively fixedly connected to the moving plate 342. One end of the piston rods of the multiple second oil cylinders 341 is respectively penetrated through the moving plate 342 and fixedly connected to the ejector plate 322. The piston movement of the piston rod of the second oil cylinder 341 drives the movable plate 342 to move together, so that the multiple ejector blocks 33 connected by multiple ejector rods 343 move together with the movable plate 342; in the mold opening process, after the ejection plate 322 has finished moving, the piston rod of the second oil cylinder 341 extends, and the second oil cylinder 341 drives the movable plate 342 fixedly connected thereto to move toward the side of the core plate 1, so that the multiple ejector blocks 33 slide away from the ejection seat 31 toward the side away from the core plate 1; in the mold closing process, the piston rod of the second oil cylinder 341 is recovered, and the second oil cylinder 341 drives the movable plate 342 fixedly connected thereto to move toward the side of the ejection plate 322, so that the multiple ejector blocks 33 slide toward the side of the core plate 1 until they abut against the ejection seat 31.

[0035] Reference Figure 1-Figure 3A plurality of limiting columns 3221 are fixedly connected on the side of the ejector plate 322 close to the core plate 1. When the ejector plate 322 moves toward the core plate 1 until the limiting columns 3221 abut against the core plate 1, the movable plate 342 and the two opposite sides of the core plate 1 still maintain a certain distance. The moving distance of the ejector plate 322 is limited by the limiting columns 3221, and a space for the movable plate 342 to move is reserved.

[0036] Reference Figure 1-Figure 5 , also includes a limit assembly 4, which is used to limit the direct distance between the ejection plate 322 and the cavity plate 2, and the limit assembly 4 includes a limit rod 41, one end of the limit rod 41 is rotatably connected to the ejection plate 322 along a mold opening direction perpendicular to the mold, and the end of the limit rod 41 away from the ejection plate 322 is fixedly connected with a clamping block 42, and the cavity plate 2 is provided with a clamping groove 21 that can be engaged with the clamping block 42, and the core plate 1 is fixedly connected with a limit slide rail 11, and the limit slide rail 11 is provided with a limit slide groove 111, and the limit slide groove 111 is closer to the core plate 1 from one end close to the ejection plate 322 to the end away from the ejection plate 322 in the length direction, and the limit wheel 43 is rotatably connected to the side of the limit rod 41 along the rotation direction of the limit rod 41, and the limit wheel 43 is slidably connected in the limit slide groove 111 along the inner wall of the limit slide groove 111. When the first driving assembly 32 drives the ejection plate 322 to move toward the side of the core plate 1, the limiting wheel 43 is located at the end of the limiting slide groove 111 close to the ejection plate 322, and the clamping block 42 is engaged with the clamping groove 21; when the second driving assembly 34 drives the sliding plate to move to the side of the core plate 1, the limiting wheel 43 is located at the end of the limiting slide groove 111 away from the ejection plate 322, and the clamping block 42 is disengaged from the clamping groove 21.

[0037] Reference Figure 1-Figure 5 When the first driving assembly 32 drives the ejection plate 322 to move toward the side of the core plate 1, the clamping block 42 is always engaged with the clamping groove 21, and the limiting wheel 43 is located at the end of the limiting slide groove 111 close to the ejection plate 322, so that the distance between the ejection plate 322 and the cavity plate 2 is the same, so that the product remains on the ejection seat 31 and the cavity plate 2, and the distance between the ejection plate 322 and the cavity plate 2 is limited, so that the bumper abuts against the ejection seat 31 and the cavity plate 2 at the same time; when the second driving assembly 34 drives the sliding plate to move to the side of the core plate 1, the limiting wheel 43 is located at the end of the limiting slide groove 111 away from the ejection plate 322, and the clamping block 42 is separated from the clamping groove 21.

[0038] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A multi-stage linkage automobile front bumper injection mold, comprising a core plate (1) with a molding surface and a cavity plate (2), Features: The mold release mechanism (3) is used for demoulding the bumper product. The mold release mechanism (3) comprises an ejector seat (31) with a molding surface, a first drive assembly (32), a plurality of ejector blocks (33) with molding surfaces, and a second drive assembly (34). The ejector seat (31) is slidably connected to the core plate (1) along the mold opening direction of the mold. The plurality of ejector blocks (33) are respectively slidably connected to the ejector seat (31) along the mold opening direction of the mold. The first drive assembly (32) is used to drive the ejector seat (31) to move. The second driving assembly (34) is used to drive the sliding of the plurality of ejector blocks (33); when the first driving assembly (32) drives the ejector seat (31) to move toward a side away from the core plate (1), the plurality of ejector blocks (33) move together with the ejector seat (31), and the bumper abuts against the ejector seat (31) and the cavity plate (2) at the same time; when the second driving assembly (34) drives the plurality of ejector blocks (33) to move toward a side away from the ejector seat (31), the bumper abuts against the plurality of ejector blocks (33) and the cavity plate (2) at the same time.

2. The multi-stage linkage automobile front bumper injection mold according to claim 1, Features: The first driving assembly (32) comprises a plurality of first oil cylinders (321), an ejection plate (322) and a plurality of ejector columns (323); the ejection plate (322) is slidably connected to the core plate (1) along the sliding direction of the ejection seat (31); one end of the plurality of ejector columns (323) is fixedly connected to the ejection plate (322); one end of the plurality of ejector columns (323) away from the ejection plate (322) passes through the core plate (1) and is fixedly connected to the ejection seat (31); the plurality of first oil cylinders (321) are respectively fixedly connected to the core plate (1); and one end of the piston rods of the plurality of first oil cylinders (321) are respectively fixedly connected to the ejection plate (322).

3. The multi-stage linkage automobile front bumper injection mold according to claim 2, Features: The second driving assembly (34) comprises a plurality of second oil cylinders (341), a moving plate (342) and a plurality of ejector rods (343); the moving plate (342) is slidably connected between the ejector plate (322) and the core plate (1) along the moving direction of the ejector plate (322); the plurality of ejector rods (343) respectively correspond to a plurality of ejector blocks (33); one end of the plurality of ejector rods (343) is fixedly connected to the moving plate (342); one end of the plurality of ejector rods (343) away from the moving plate (342) respectively passes through the core plate (1) and is fixedly connected to the corresponding ejector block (33); the plurality of second oil cylinders (341) are respectively fixedly connected to the moving plate (342); one end of the piston rod of the plurality of second oil cylinders (341) respectively passes through the moving plate (342) and is fixedly connected to the ejector plate (322).

4. The multi-stage linkage automobile front bumper injection mold according to claim 3, Features: A plurality of limiting columns (3221) are provided on a side surface of the ejector plate (322) close to the core plate (1); when the ejector plate (322) moves toward the side of the core plate (1) until the limiting columns (3221) abut against the core plate (1), the movable plate (342) and the two side surfaces opposite to the core plate (1) still maintain a certain distance.

5. The multi-stage linkage automobile front bumper injection mold according to claim 3, Features: The mold cavity (2) further comprises a limit assembly (4), wherein the limit assembly (4) is used to limit the distance between the ejector plate (322) and the cavity plate (2), wherein the limit assembly (4) comprises a limit rod (41), wherein one end of the limit rod (41) is rotatably connected to the ejector plate (322) in a direction perpendicular to the mold opening direction of the mold, wherein a clamping block (42) is provided at one end of the limit rod (41) away from the ejector plate (322), wherein a clamping groove (21) capable of clamping with the clamping block (42) is provided on the cavity plate (2), wherein when the first drive assembly (32) drives the ejector plate (322) to move toward one side of the core plate (1), the clamping block (42) is always clamped with the clamping groove (21), and when the second drive assembly (34) drives the sliding plate to move toward one side of the core plate (1), the clamping block (42) is separated from the clamping groove (21).

6. The multi-stage linkage automobile front bumper injection mold according to claim 5, Features: The core plate (1) is provided with a limiting slide rail (11), and a limiting slide groove (111) is provided on the limiting slide rail (11). The limiting slide groove (111) is closer to the core plate (1) from one end close to the ejection plate (322) to the end far from the ejection plate (322) in the length direction. A limiting wheel (43) is provided on the side surface of the limiting rod (41), and the limiting wheel (43) is slidably connected along the inner wall of the limiting slide groove (111). The limiting wheel (43) is connected to the limiting slide groove (111). When the first driving component (32) drives the ejection plate (322) to move toward one side of the core plate (1), the limiting wheel (43) is located at one end of the limiting slide groove (111) close to the ejection plate (322). When the second driving component (34) drives the sliding plate to move away from the core plate (1), the limiting wheel (43) is located at one end of the limiting slide groove (111) away from the ejection plate (322).

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