Straight-ejection and inclined-ejection linkage mechanism of automobile front bumper injection molding mold

Abstract

The invention provides an automobile front bumper injection molding mold straight-ejection and inclined-ejection linkage mechanism which comprises an upper mold, a lower mold and an ejection plate, a straight-ejection block and an inclined-ejection block are embedded in the lower mold, a straight-ejection rod is arranged at the bottom of the straight-ejection block and fixed to the ejection plate, an inclined-ejection rod is arranged at the bottom of the inclined-ejection block, an inclined-ejection hole is further formed in the lower mold, and an inclined-ejection hole is formed in the inclined-ejection hole. The straight ejector rod is arranged in the inclined ejector hole in a sliding mode, the inclined ejector rod is arranged in the inclined ejector hole in a sliding mode, a first guide groove is formed in the straight ejector block, a first guide block is arranged on the inclined ejector block, the guide blocks are arranged in the first guide groove in a sliding mode, and when the straight ejector rod is ejected out, the inclined ejector block is driven to move transversely through matching of the first guide block and the first guide groove. And through the matching between the guide groove I and the guide block I and the matching between the inclined hole and the inclined ejector rod, the inclined ejector block moves along the direction of the guide groove I in the process that the straight ejector block drives the inclined ejector block to ascend, so that the purposes of driving the inclined ejector by the straight ejector and demolding are achieved.

Description

Technical Field

[0001] The present invention relates to a mold, and in particular, to a direct ejector and inclined ejector linkage mechanism for an injection molding mold of an automobile front bumper. Background Art

[0002] As Figure 1 shown, an automobile front bumper includes a bumper body 90. A threaded connection post 91 is provided inside the bumper body 90. A buckle groove 92 is provided at the lower end of the threaded connection post 91. The threaded connection post 91 and the buckle groove 92 have different angles, and the threaded connection post 91 and the buckle groove 92 respectively form undercuts and cannot be normally ejected. When forming this buckle groove 92, it is usually completed by core pulling or inclined ejection. However, it is found in the process of designing the mold that the buckle groove 92 is in a relatively marginal position here. There is insufficient space for core pulling, and the bottom of the inclined ejector block cannot be fixed to the ejector plate when using the inclined ejection method. Therefore, core pulling and normal inclined ejection cannot be used for demolding. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a direct ejector and inclined ejector linkage mechanism for an injection molding mold of an automobile front bumper, which uses the method of driving the inclined ejector by the direct ejector to complete demolding.

[0004] To solve the above technical problems, the technical solution of the present invention is: A direct ejector and inclined ejector linkage mechanism for an injection molding mold of an automobile front bumper, including an upper mold, a lower mold, and an ejector plate. A direct ejector block and an inclined ejector block are embedded in the lower mold. A direct ejector rod is provided at the bottom of the direct ejector block and is fixed to the ejector plate. An inclined ejector rod is provided at the bottom of the inclined ejector block. An inclined ejector hole is also provided on the lower mold. The inclined ejector rod is slidably arranged in the inclined ejector hole. A first guide groove is provided on the direct ejector block, and a first guide block is provided on the inclined ejector block. The first guide block is slidably arranged in the first guide groove. When the direct ejector rod ejects, the inclined ejector block is driven to move horizontally through the cooperation of the first guide block and the first guide groove.

[0005] By the above technical means, by setting the direct ejector block and the inclined ejector block, and through the cooperation between the first guide groove and the first guide block, and the inclined hole and the inclined ejector rod, when the direct ejector block drives the inclined ejector block to rise, the inclined ejector block moves along the direction of the first guide groove, so as to achieve the purpose of driving the inclined ejector by the direct ejector and demolding, and only a small space is required and it is not easy to interfere with other structures.

[0006] Preferably, an inclined second guide groove is further provided at the side end of the first guide groove. The first guide block reciprocates in the first guide groove and the second guide groove. A translation and material pressing assembly is further provided inside the inclined ejector block.

[0007] By the above technical means, by setting the second guide groove and the translation and material pressing assembly, the inclined ejector block first makes an inclined movement before moving horizontally, so as to first eject the threaded connection post.

[0008] Preferably, the translational material-resisting assembly comprises an inclined hole one and a core-pulling rod formed in the inclined ejector block. The core-pulling rod is inclined and has a horizontally disposed core-pulling head at its end. A guide groove three is also formed on the side wall of the straight ejector rod. The guide groove three is horizontally disposed and is slidably provided with a tail plate. The core-pulling rod is fixed on the tail plate. A spring one is also disposed between the inclined hole one and the core-pulling rod.

[0009] Through the above technical means, the core pulling rod is set at an angle and the core pulling head is set horizontally, and a tail plate is set at the tail of the core pulling rod, and a spring is set between the inclined hole and the core pulling rod, so that the core pulling rod can be kept stationary when the inclined top block moves obliquely, and when the guide block moves in the guide groove, the core pulling rod and the core pulling head are driven to move horizontally.

[0010] Preferably, a material stopper is provided between the core pulling head and the core pulling rod, and the core pulling head is fixed to the material stopper by screws.

[0011] Through the above technical means, by setting a material stop head, the product can be supported by the material stop head when the threaded connecting column is withdrawing the material, thereby preventing the product from being stretched, bent and deformed during the rotational withdrawal process.

[0012] Preferably, the inclined top block is also provided with a rotating material return component for forming a connecting column, the rotating material return component includes a rotating head, a power rod and a nut seat, the top of the rotating head is provided with a thread and is used to form a threaded connecting column, the inclined top block is also provided with an inclined hole II, the nut seat is installed in the inclined hole II, the power rod is threadedly matched with the nut seat, the tail of the power rod rests on the straight top block and cooperates with it through a bearing, a key slot is provided in the rotating head, the top of the rotating head is slidably matched with the key slot, when the inclined top block tilts backward, the nut seat drives the power rod to rotate, and the power rod drives the rotating head to rotate.

[0013] Through the above technical means, by setting a thread on the top of the rotating head and driving the power rod to rotate through the nut seat, the power rod drives the rotating head to rotate, so that the rotating head rotates during the withdrawal process, so that the threaded connection column is formed and disengaged.

[0014] Preferably, the power rod includes a main rod and a rod head, a positioning protrusion is provided at the end of the main rod, the positioning protrusion extends into the rod head, a torsion spring is also provided between the main rod and the rod head, a resistance plate is also provided on the outside of the rotating head, and a second spring is also provided between the resistance plate and the second inclined hole.

[0015] Through the above technical means, by arranging a torsion spring between the main rod and the rod head, and arranging a second spring between the abutting disc and the second inclined hole, a certain buffer amount is provided for the rotation between the main rod and the rotating head, and at the same time, a certain buffer amount is provided for the rotating head to follow the movement of the inclined ejector block, preventing the situation that the threads on the power rod and the rotating head are different, resulting in the mismatch between the rotation speed and the moving speed and damaging the threads.

[0016] Preferably, cooling channels are arranged in both the straight ejector block and the inclined ejector block.

[0017] Through the above technical solution, the cooling speed of the threaded connection column is increased, preventing the threaded connection column from cooling slowly and damaging the threads when the rotating head rotates and withdraws. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the bumper body; Figure 2 is a schematic structural diagram of the embodiment; Figure 3 is a schematic structural diagram of the lower die; Figure 4 is Figure 3 the A-A cross-sectional schematic diagram in Figure 5 is a partial cross-sectional view of the embodiment; Figure 6 is a schematic structural diagram of the first ejection stage; Figure 7 is a schematic structural diagram of the second ejection stage; Figure 8 is a partial enlarged view of the embodiment; Figure 9 is a schematic structural diagram of the rotary ejection and feeding assembly; Figure 10 is the structural schematic of the straight ejector block and the inclined ejector block Figure 1 ; Figure 11 is the structural schematic of the straight ejector block and the inclined ejector block Figure 2 ; Figure 12 is a schematic structural diagram of the straight ejector block.

[0019] : 1. upper die; 2. lower die; 3. ejector plate; 4. straight ejector block; 5. inclined ejector block; 6. straight ejector rod; 7. inclined ejector rod; 8. inclined ejector hole; 9. guide groove one; 10. guide block one; 11. guide groove two; 12. inclined hole one; 13. core pulling rod; 14. core pulling head; 15. guide groove three; 16. tail plate; 17. spring one; 18. rotary material return assembly; 19. rotary head; 20. power rod; 21. nut seat; 22. inclined hole two; 23. key slide; 24. main rod; 25. rod head; 26. positioning boss; 27. torsion spring; 28. stop plate; 29. ​​spring two; 30. cooling channel; 90. bumper body; 91. threaded connecting column; 92. buckle groove. DETAILED DESCRIPTION

[0020] The specific implementation modes of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0021] A straight top and inclined top linkage mechanism of an automobile front bumper injection molding mold, such as Figure 1-12 As shown, it includes an upper mold 1, a lower mold 2 and an ejection plate 3, the lower mold 2 is embedded with a straight ejector block 4 and an inclined ejector block 5, the bottom of the straight ejector block 4 is provided with a straight ejector rod 6 and is fixed to the ejection plate 3, the bottom of the inclined ejector block 5 is provided with an inclined ejector rod 7, and the lower mold 2 is also provided with an inclined ejector hole 8, the inclined ejector rod 7 is slidably set in the inclined ejector hole 8, the bottom of the inclined ejector rod 7 only slides with the inclined ejector hole 8 and is not fixed with any structure, a guide groove 9 is provided on the straight ejector block 4, a guide block 10 is provided on the inclined ejector block 5, the guide block is slidably set in the guide groove 9, when the straight ejector rod 6 is ejected, the guide block 10 slides along the guide groove 9, the inclined ejector rod 7 slides along the inclined ejector hole 8, thereby driving the inclined ejector block 5 to move horizontally during the ejection process, so as to achieve the purpose of the straight ejector driving the inclined ejector and demoulding, and only a small space is required for application, and it is not easy to interfere with other structures.

[0022] like Figure 12 As shown, the side end of the guide groove 1 9 is also provided with an inclined guide groove 2 11, the guide groove 1 9 is consistent with the disengagement direction of the buckle groove 92, and the guide groove 2 11 is consistent with the disengagement direction of the threaded connection column 91. During the ejection and retraction process of the inclined ejector block 5, the guide block 10 reciprocates in the guide groove 1 9 and the guide groove 2 11, thereby completing the movement at two angles. A translation material abutment component is also provided in the inclined ejector block 5.

[0023] like Figure 5 , 8As shown, the translation material abutment assembly includes an inclined hole 12 and a core pulling rod 13 provided in the inclined ejector block 5. The core pulling rod 13 is inclined, and a core pulling head 14 is horizontally provided at its end. The core pulling head 14 is used to form the buckle groove 92. A guide groove 3 15 is also provided on the side wall of the straight ejector rod 6. The guide groove 3 15 is also horizontally provided and slidably provided with a tail plate 16. The core pulling rod 13 is fixed on the tail plate 16. A spring 17 is also provided between the inclined hole 12 and the core pulling rod 13. The spring 17 can apply a clamping force. By obliquely arranging the core pulling rod 13 and horizontally arranging the core pulling head 14, a tail plate 16 is provided at the tail of the core pulling rod 13, and a spring 17 is provided between the inclined hole 12 and the core pulling rod 13, the inclined ejector block 5 is tilted. When the guide block 10 moves in the guide groove 9, the core pulling rod 13 and the core pulling head 14 are driven to move horizontally. When the inclined top block 5 follows the guide block 10 to move in the guide groove 11, the inclined top block 5 moves obliquely. At this time, the tail plate 16 is unable to move because the moving direction is inconsistent with the moving direction of the inclined top block 5. At the same time, the core pulling rod 13 and the core pulling head 14 are gradually exposed from the inclined top block 5, and the buckle groove 92 remains in the non-core pulling state. A material stopper is also provided between the core pulling head 14 and the core pulling rod 13. The core pulling head 14 is fixed to the material stopper by screws. When the threaded connecting column 91 is used to withdraw the material, the product can be supported by the material stopper to prevent the product from being stretched, bent and deformed during the rotation withdrawal process.

[0024] like Figure 8 , 9 As shown, a rotating material return assembly 18 for forming a connecting column is also provided in the inclined ejector block 5, and the rotating material return assembly 18 includes a rotating head 19, a power rod 20 and a nut seat 21. The top of the rotating head 19 is provided with a thread and is used to form a threaded connecting column 91. An inclined hole 22 is also provided in the inclined ejector block 5, and the nut seat 21 is installed in the inclined hole 22. The power rod 20 is threadedly matched with the nut seat 21. The tail of the power rod 20 rests on the straight ejector block 4 and cooperates with it through a bearing. A key slot 23 is provided in the rotating head 19, and the top of the rotating head 19 is slidably matched with the key slot 23. When the inclined ejector block 5 tilts backward, the nut seat 21 drives the power rod 20 to rotate, and the power rod 20 drives the rotating head 19 to rotate.

[0025] like Figure 9As shown, the power rod 20 includes a main rod 24 and a rod head 25. A positioning projection 26 is provided at the end of the main rod 24, and the positioning projection 26 extends into the rod head 25. A torsion spring 27 is also provided between the main rod 24 and the rod head 25. An abutting disc 28 is further provided outside the rotating head 19, and a second spring 29 is provided between the abutting disc 28 and the second inclined hole 22. By providing the torsion spring 27 between the main rod 24 and the rod head 25 and the second spring 29 between the abutting disc 28 and the second inclined hole 22, a certain buffer amount is provided for the rotation between the main rod 24 and the rotating head 19, and at the same time, a certain buffer amount is provided for the movement of the rotating head 19 following the inclined ejector block 5, preventing the situation where the threads on the power rod 20 and the threads on the rotating head 19 are different, resulting in mismatched rotation speed and movement speed and damaging the threads.

[0026] Cooling channels 30 are provided inside both the straight ejector block 4 and the inclined ejector block 5 to increase the cooling speed of the threaded connecting post 91 and prevent the threaded connecting post 91 from cooling slowly and damaging the threads when the rotating head 19 rotates and withdraws.

[0027] The following is the movement process. As Figure 5 、 6 shown, when the ejector plate 3 drives the straight ejector rod 6 to move upward, the inclined ejector block 5 follows the straight ejector rod 6 to move upward and performs an inclined movement along the direction of the second guide groove 11. At this time, the tail plate 16 abuts against the second guide groove 11, so that the core-pulling rod 13 and the power rod 20 do not move. During this period, the cooperation between the nut seat 21 and the threads on the power rod 20 causes the main rod 24 to rotate, and drives the rod head 25 to rotate. The rod head 25 drives the rotating head 19 to rotate. The rotating head 19 rotates and retreats while moving under the movement of the inclined ejector block 5 until the inclined ejector block 5 and the rotating head 19 are disengaged from the reverse buckle of the threaded connecting post 91. At this time, the first guide block 10 enters the first guide groove 9, and the movement angle of the inclined ejector block 5 changes. As Figure 6 、 7 shown, the straight ejector block 4 continues to eject. At this time, the inclined ejector block 5 performs a relative lateral movement, driving the tail plate 16 and the core-pulling rod 13 to perform a relative lateral movement to disengage the buckle groove 92.

[0028] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A direct top and inclined top linkage mechanism for an injection molding die of an automobile front bumper, comprising an upper die (1), a lower die (2) and an ejector plate (3), characterized in that: The lower die (2) is internally provided with a direct ejector block (4) and an inclined ejector block (5). A direct ejector rod (6) is arranged at the bottom of the direct ejector block (4) and is fixed to the ejector plate (3). An inclined ejector rod (7) is arranged at the bottom of the inclined ejector block (5). An inclined ejector hole (8) is also formed in the lower die (2). The inclined ejector rod (7) is slidably arranged in the inclined ejector hole (8). A first guiding groove (9) is formed in the direct ejector block (4), and a first guiding block (10) is formed in the inclined ejector block (5). The guiding block is slidably arranged in the first guiding groove (9). When the direct ejector rod (6) ejects, the inclined ejector block (5) is driven to move horizontally through the cooperation of the first guiding block (10) and the first guiding groove (9).

2. The direct-lift and inclined-lift linkage mechanism of an injection molding die for an automotive front bumper according to claim 1, characterized in that: An inclined second guiding groove (11) is further arranged at the side end of the first guiding groove (9). The first guiding block (10) reciprocates in the first guiding groove (9) and the second guiding groove (11). A translational material pressing component is also arranged in the inclined ejector block (5).

3. The direct ejection and inclined ejection linkage mechanism of an automobile front bumper injection molding die according to claim 2, characterized in that: The translational material pressing component includes an inclined hole one (12) and a core pulling rod (13) formed in the inclined ejector block (5). The core pulling rod (13) is inclined, and a horizontally arranged core pulling head (14) is arranged at its end. A third guiding groove (15) is also formed on the side wall of the direct ejector rod (6). The third guiding groove (15) is horizontally arranged, and a tail plate (16) is slidably arranged thereon. The core pulling rod (13) is fixed to the tail plate (16). A first spring (17) is also arranged between the inclined hole one (12) and the core pulling rod (13).

4. The direct ejection and inclined ejection linkage mechanism of an injection molding die for an automobile front bumper according to claim 3, characterized in that: A material pressing head is further arranged between the core pulling head (14) and the core pulling rod (13). The core pulling head (14) is fixed to the material pressing head by screws.

5. The direct ejection and inclined ejection linkage mechanism of an automobile front bumper injection molding die according to claim 2, wherein: A rotary material discharging component (18) for forming a connecting column is also arranged in the inclined ejector block (5). The rotary material discharging component (18) includes a rotary head (19), a power rod (20), and a nut seat (21). A thread is arranged at the top of the rotary head (19) for forming a threaded connecting column (91). An inclined hole two (22) is also arranged in the inclined ejector block (5). The nut seat (21) is installed in the inclined hole two (22). The power rod (20) is in threaded cooperation with the nut seat (21). The tail of the power rod (20) abuts against the direct ejector block (4) and is in bearing cooperation with it. A key sliding groove (23) is formed in the rotary head (19). The top of the rotary head (19) is in sliding cooperation with the key sliding groove (23). When the inclined ejector block (5) retracts obliquely, the nut seat (21) drives the power rod (20) to rotate, and the power rod (20) drives the rotary head (19) to rotate.

6. The direct ejector and angled ejector linkage mechanism for an automotive front bumper injection molding die according to claim 5, characterized in that: The power rod (20) includes a main rod (24) and a rod head (25). A positioning convex head (26) is formed at the end of the main rod (24). The positioning convex head (26) extends into the rod head (25). A torsion spring (27) is also arranged between the main rod (24) and the rod head (25). A resisting disc (28) is further arranged outside the rotary head (19). A second spring (29) is also arranged between the resisting disc (28) and the inclined hole two (22).

7. The direct-lift and inclined-lift linkage mechanism of an injection molding die for an automobile front bumper according to claim 6, wherein: Cooling channels (30) are arranged in both the direct ejector block (4) and the inclined ejector block (5).

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