A straight-roof and inclined-roof linkage mechanism for the injection molding die of a front bumper of an automobile

Abstract

The present invention provides a straight ejector and inclined ejector linkage mechanism of an automobile front bumper injection molding mold, comprising an upper mold, a lower mold and an ejection plate, wherein a straight ejector block and an inclined ejector block are embedded in the lower mold, a straight ejector rod is provided at the bottom of the straight ejector block and is fixed to the ejection 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 guide groove 1 is provided on the straight ejector block, a guide block 1 is provided on the inclined ejector block, and the guide block 1 is slidably arranged in the guide groove 1, and when the straight ejector rod is ejected, the inclined ejector block is driven to move laterally through the cooperation between the guide block 1 and the guide groove 1, and by providing the straight ejector block and the inclined ejector block, and through the cooperation between the guide groove 1 and the guide block 1, the inclined hole and the inclined ejector rod, the inclined ejector block is driven to move along the direction of the guide groove 1 during the process of the straight ejector block driving the inclined ejector block to rise, thereby achieving the purpose of the straight ejector driving the inclined ejector and demoulding.

Description

Technical Field

[0001] The invention relates to a mould, in particular to a straight-roof and inclined-roof linkage mechanism of an automobile front bumper injection moulding mould. Background Art

[0002] like Figure 1 As shown, a front bumper of an automobile includes a bumper body 90. The inner opening of the bumper body 90 is provided with a threaded connecting column 91. The lower end of the threaded connecting column 91 is provided with a buckle groove 92. The threaded connecting column 91 and the buckle groove 92 have different angles. The threaded connecting column 91 and the buckle groove 92 respectively form an inverted buckle and cannot be ejected normally. When forming this buckle groove 92, it is usually completed by core pulling or inclined ejection. However, in the process of designing the mold, it was found that the buckle groove 92 here is in a relatively marginal position. When using core pulling, there is insufficient space. When using inclined ejection, the bottom of the inclined ejection block cannot be fixed to the ejection plate. Therefore, core pulling and normal inclined ejection cannot be used for demoulding. Summary of the Invention

[0003] In view of this, the object of the present invention is to provide a straight top and inclined top linkage mechanism for an automobile front bumper injection molding mold, which uses a straight top to drive an inclined top to complete demoulding.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a straight ejector and inclined ejector linkage mechanism of an automobile front bumper injection molding mold, comprising an upper mold, a lower mold and an ejection plate, the lower mold is embedded with a straight ejector block and an inclined ejector block, the bottom of the straight ejector block is provided with a straight ejector rod and is fixed to the ejection plate, the bottom of the inclined ejector block is provided with an inclined ejector rod, and the lower mold is also provided with an inclined ejector hole, the inclined ejector rod is slidably arranged in the inclined ejector hole, the straight ejector block is provided with a guide groove 1, the inclined ejector block is provided with a guide block 1, the guide block is slidably arranged in the guide groove 1, and when the straight ejector rod is ejected, the inclined ejector block is driven to move horizontally by the cooperation of the guide block 1 and the guide groove 1.

[0005] Through the above-mentioned technical means, by setting a straight ejector block and an inclined ejector block, and through the cooperation between guide groove 1 and guide block 1, inclined hole and inclined ejector rod, the straight ejector block drives the inclined ejector block to rise, and the inclined ejector block moves along the direction of guide groove 1, thereby achieving the purpose of the straight ejector driving the inclined ejector and demoulding. It only requires a small space to be applicable and is not easy to interfere with other structures.

[0006] Preferably, the side end of the guide groove one is further provided with an inclined guide groove two, the guide block one moves back and forth in the guide groove one and the guide groove two, and a translational material support component is further provided in the inclined top block.

[0007] Through the above technical means, by setting the second guide groove and setting the translation material support component, the inclined push block is first moved obliquely before the horizontal movement, so that the threaded connection column is first withdrawn.

[0008] Preferably, the translational material-retaining assembly includes an inclined hole 1 and a core-pulling rod provided in the inclined ejector block. The core-pulling rod is inclined, and a horizontally arranged core-pulling head is provided at the end thereof. A guide groove 3 is also provided on the side wall of the straight ejector rod. The guide groove 3 is horizontally arranged and is slidably provided with a tail plate. The core-pulling rod is fixed on the tail plate, and a spring 1 is provided between the inclined hole 1 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 1 and the core pulling rod, so that the core pulling rod remains stationary when the inclined top block moves obliquely, and when the guide block 1 moves in the guide groove 1, 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 rotation and withdrawal process.

[0012] Preferably, a rotary material return assembly for forming a connecting column is also provided in the inclined ejector block, and the rotary material return assembly 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 ejector block is also provided with an inclined hole 2, and the nut seat is installed in the inclined hole 2. The power rod is threadedly matched with the nut seat, and the tail of the power rod rests on the straight ejector block and cooperates with it through a bearing. A key slot is provided in the rotating head, and the top of the rotating head slides with the key slot. When the inclined ejector 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 exit process, and 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 setting a torsion spring between the main rod and the rod head, and setting a second spring between the abutment plate and the second inclined hole, a certain buffer is provided for the rotation between the main rod and the rotating head, and at the same time a certain buffer is provided for the movement of the rotating head following the inclined ejector block, to prevent the threads on the power rod from being different from the threads on the rotating head, resulting in the rotation speed and the movement speed being incompatible and the thread being damaged.

[0016] Preferably, cooling channels are provided 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, which prevents the threaded connection column from cooling slowly and damaging the thread when the rotary head rotates out. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the bumper body;

[0019] Figure 2 It is a structural diagram of an embodiment;

[0020] Figure 3 Schematic diagram of the structure of the lower mold;

[0021] Figure 4 for Figure 3 AA cross-sectional view in FIG;

[0022] Figure 5 A partial cross-sectional view of an embodiment;

[0023] Figure 6 It is a structural diagram of the first ejection stage;

[0024] Figure 7 It is a structural diagram of the second ejection stage;

[0025] Figure 8 It is a partial enlarged view of the embodiment;

[0026] Figure 9 It is a structural diagram of the rotary stripping assembly;

[0027] Figure 10 Schematic diagram of the structure of straight top block and inclined top block Figure 1 ;

[0028] Figure 11 Schematic diagram of the structure of straight top block and inclined top block Figure 2 ;

[0029] Figure 12 This is a structural diagram of the straight top block.

[0030] Figure numerals: 1. upper mold; 2. lower mold; 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

[0031] The specific embodiments 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.

[0032] A linkage mechanism for the injection molding of a front bumper of an automobile, such as Figure 1-12 As shown, it includes an upper mold 1, a lower mold 2 and an ejection plate 3, a straight ejector block 4 and an inclined ejector block 5 are embedded in the lower mold 2, a straight ejector rod 6 is provided at the bottom of the straight ejector block 4 and is fixed to the ejection plate 3, an inclined ejector rod 7 is provided at the bottom of the inclined ejector block 5, and an inclined ejector hole 8 is also provided on the lower mold 2, the inclined ejector rod 7 is slidably set in the inclined ejector hole 8, and the bottom of the inclined ejector rod 7 only slides with the inclined ejector hole 8 and is not fixed to 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, and 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, and 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 straight ejection driving inclined ejection and demoulding, and only requires a small space to be applicable and is not easy to interfere with other structures.

[0033] like Figure 12 As shown, the side end of the guide groove 1 9 is further 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 moves back and forth in the guide groove 1 9 and the guide groove 2 11, thereby completing the movement of two angles. A translational material support component is also provided in the inclined ejector block 5.

[0034] like Figure 5 、 8As shown, the translational material-retaining 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 is slidably provided with a tail plate 16. The core-pulling rod 13 is fixed on the tail plate 16. A spring 17 is further provided between the inclined hole 12 and the core-pulling rod 13. The spring 17 can apply a pressing force. By tilting the core-pulling rod 13 and horizontally setting the core-pulling head 14, and at the same time providing a tail plate 16 at the tail of the core-pulling rod 13, a spring 17 is provided between the inclined hole 12 and the core-pulling rod 13, so that the inclined ejector block 5 can be tilted and moved. When the core pulling rod 13 is in motion, it keeps stationary. When the guide block 10 moves in the guide groove 9, it drives the core pulling rod 13 and the core pulling head 14 to move horizontally. When the inclined ejector block 5 follows the guide block 10 to move in the guide groove 2 11, the inclined ejector block 5 moves obliquely. At this time, the tail plate 16 is unable to move because its moving direction is inconsistent with that of the inclined ejector block 5. At the same time, the core pulling rod 13 and the core pulling head 14 gradually expose the inclined ejector 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 material stopper can be used to support the product to prevent the product from being stretched, bent and deformed during the rotation and withdrawal process.

[0035] like Figure 8 、 9 As shown, a rotary material return assembly 18 for forming a connecting column is also provided in the inclined ejector block 5. The rotary material return assembly 18 includes a rotary head 19, a power rod 20 and a nut seat 21. The top of the rotary 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. 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 is matched with it through a bearing. A key slot 23 is provided in the rotary head 19. The top of the rotary 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 rotary head 19 to rotate.

[0036] like Figure 9As shown, the power rod 20 includes a main rod 24 and a rod head 25. A positioning protrusion 26 is provided at the end of the main rod 24, and the positioning protrusion 26 extends into the rod head 25. A torsion spring 27 is also provided between the main rod 24 and the rod head 25. A resist plate 28 is also provided on the outside of the rotating head 19, and a spring 29 is also provided between the resist plate 28 and the inclined hole 22. By arranging the torsion spring 27 between the main rod 24 and the rod head 25, and arranging the spring 29 between the resist plate 28 and the inclined hole 22, a certain buffer is provided for the rotation between the main rod 24 and the rotating head 19, and a certain buffer is provided for the movement of the rotating head 19 following the inclined ejector block 5, to prevent the threads on the power rod 20 from being different from the threads on the rotating head 19, resulting in the rotation speed and the movement speed being mismatched and the threads being damaged.

[0037] Cooling channels 30 are provided in both the straight ejector block 4 and the inclined ejector block 5 to increase the cooling speed of the threaded connection column 91 and prevent the threaded connection column 91 from cooling slowly and damaging the thread when the rotary head 19 rotates out.

[0038] The following is the movement process, such as Figure 5 、 6 As shown, when the ejector plate 3 drives the straight ejector rod 6 to move upward, the inclined ejector block 5 moves upward with the straight ejector rod 6 and moves obliquely along the direction of the guide groove 11. At this time, the tail plate 16 is pressed against the guide groove 11, so that the core pulling rod 13 and the power rod 20 do not move. During this period, the nut seat 21 cooperates with the thread on the power rod 20 to cause 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 under the movement of the inclined ejector block 5 until the inclined ejector block 5 and the rotating head 19 are separated from the undercut of the threaded connection column 91. At this time, the guide block 10 enters the guide groove 9, and the movement angle of the inclined ejector block 5 changes, as shown in FIG. Figure 6 、 7 As shown, the straight ejector block 4 continues to be ejected, and at this time the inclined ejector block 5 moves relatively laterally, driving the tail plate 16 and the core pulling rod 13 to move relatively laterally, and the buckle groove 92 is disengaged.

[0039] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A straight-elevation and inclined-elevation linkage mechanism for an injection molding die for a front bumper of an automobile, comprising an upper die (1), a lower die (2) and an ejector plate (3), characterized in that: 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), the lower mold (2) is also provided with an inclined ejector hole (8), the inclined ejector rod (7) is slidably arranged in the inclined ejector hole (8), the straight ejector block (4) is provided with a guide groove (9), the inclined ejector block (5) is provided with a guide block (10), the guide block (10) is slidably arranged in the guide groove (9), and when the straight ejector rod (6) is ejected, the inclined ejector block (5) is driven to move horizontally by the cooperation of the guide block (10) and the guide groove (9); The side end of the guide groove 1 (9) is also provided with an inclined guide groove 2 (11), the guide block 1 (10) reciprocates in the guide groove 1 (9) and the guide groove 2 (11), and the inclined top block (5) is also provided with a translational material-supporting component; The inclined ejector block (5) is also provided with a rotary material return assembly (18) for forming a connecting column, and the rotary material return assembly (18) includes a rotary head (19), a power rod (20) and a nut seat (21). The top of the rotary head (19) is provided with a thread and is used to form a threaded connecting column (91). The inclined ejector block (5) is also provided with an inclined hole 2 (22). The nut seat (21) is installed in the inclined hole 2 (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 is matched with it through a bearing. A key slot (23) is provided in the rotary head (19). The top of the rotary head (19) is slidably matched with the key slot (23). When the inclined ejector block (5) tilts and retreats, the nut seat (21) drives the power rod (20) to rotate, and the power rod (20) drives the rotary head (19) to rotate. The power rod (20) comprises a main rod (24) and a rod head (25); a positioning protrusion (26) is provided at the end of the main rod (24); the positioning protrusion (26) extends into the rod head (25); a torsion spring (27) is provided between the main rod (24) and the rod head (25); a butt plate (28) is provided on the outside of the rotating head (19); and a second spring (29) is provided between the butt plate (28) and the second inclined hole (22).

2. The straight-lift and inclined-lift linkage mechanism for the injection molding die of a front bumper of an automobile according to claim 1, characterized in that: The translational material-resisting 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 has a horizontally arranged core-pulling head (14) at its end. A guide groove (15) is also provided on the side wall of the straight ejector rod (6). The guide groove (15) is horizontally arranged and is 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).

3. The straight-lift and inclined-lift linkage mechanism for the injection molding die of a front bumper of an automobile according to claim 2, characterized in that: A material stopper is further provided between the core pulling head (14) and the core pulling rod (13), and the core pulling head (14) is fixed to the material stopper by screws.

4. The straight-lift and inclined-lift linkage mechanism for an automobile front bumper injection molding mold according to claim 1, characterized in that: Cooling channels (30) are provided in both the straight ejector block (4) and the inclined ejector block (5).

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