Positioning mechanism of automobile stamping die

Abstract

The utility model discloses a positioning mechanism of an automobile stamping die, which relates to the technical field of automobile stamping dies and comprises a positioning seat and a lower die cutter block, a sucker is arranged in a mounting hole, a piston cavity is arranged in the lower die cutter block, a connecting pipe is connected between the piston cavity and the sucker, and a piston is slidably mounted in the piston cavity. The lower portion of the piston is fixedly connected with a piston rod, the piston rod is sleeved with a connecting rod, a connecting spring is arranged between the connecting rod and the piston rod, a connecting plate is arranged on the linear guide device, a nut is welded to the connecting plate, a screw is in threaded connection with the nut, and one end of the screw is connected with the positioning seat. When flanging or trimming is carried out, a plate part is positioned and fixed, the positioning stability of the plate part can be effectively improved, so that the plate part can be prevented from deviating and warping, the stamping precision is ensured, the distance between the positioning rod and the upper die cutter block can be more accurately controlled, and the production efficiency is improved. And the adjustment work is easier to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile stamping dies, and particularly relates to a positioning mechanism of an automobile stamping die. Background Technique

[0002] Stamping dies are essential process equipment for stamping production and are technology-intensive products. The quality, production efficiency, and production cost of stamped parts are directly related to the design and manufacturing of the dies. The level of die design and manufacturing technology is an important symbol to measure the level of a country's product manufacturing, and to a large extent determines the quality, efficiency, and new product development ability of products. There are many forms of stamping dies, and stamping dies can also be classified according to three aspects: working nature, die structure, and die material. Classified according to the processing method of products, the dies can be divided into five categories: punching and shearing dies, bending dies, drawing dies, forming dies, and compression dies.

[0003] In the production of automobile stamped parts, steel, sheet, or steel strip is usually placed on the stamping die through a stamping device. The upper stamping device applies pressure to the steel through a punch head to cause plastic deformation or separation, so as to obtain automobile parts with the required shape and size.

[0004] An elastic positioning tool for an automobile panel stamping die disclosed in the prior art CN 212168752 U includes components such as a positioning seat, a positioning rod, and an elastic member. Although this utility model enables the positioning rod to retract into the positioning hole under the action of an external force, and the upper die blade block does not need to design a corresponding avoiding structure for the positioning rod, so that the upper die blade block can maintain a complete structure and has higher strength. At the same time, it can also improve the flanging effect of automobile panels. However, this utility model can only achieve the positioning of sheet parts, and the fixing effect on sheet parts is average. When flanging and blanking, the sheet parts may slide, shift, and warp when being squeezed by the upper die blade block, which is likely to affect the processing accuracy. Moreover, this utility model adjusts the distance between the lower die blade block and the positioning rod through an oblong installation groove. However, this adjustment method is not only inconvenient but also difficult to accurately control. Therefore, there is still room for improvement. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a positioning mechanism of an automobile stamping die, which solves the problems raised in the above background technique.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the utility model is realized by the following technical solutions: A positioning mechanism for an automotive stamping die, comprising a positioning seat and a lower die cutter block. An installation hole is formed on the upper surface of the lower die cutter block, and a suction cup is arranged inside the installation hole. A piston cavity is formed inside the lower die cutter block, and a connecting pipe is connected between the piston cavity and the suction cup. A piston is slidably installed inside the piston cavity, and a piston rod is fixedly connected to the lower part of the piston. A positioning rod is slidably connected inside the positioning seat, a connecting rod is fixedly connected to the positioning rod, the connecting rod is sleeved on the piston rod, and a connecting spring is arranged between the connecting rod and the piston rod. A linear guiding device connected to the stamping die is arranged below the positioning seat. A connecting plate is arranged on the linear guiding device, a nut is welded on the connecting plate, and a screw rod is threadedly connected to the nut. One end of the screw rod is connected to the positioning seat.

[0009] Optionally, a return spring is arranged between the positioning rod and the upper surface of the positioning seat.

[0010] Optionally, a positioning hole is formed inside the positioning seat, the positioning rod is slidably installed inside the positioning hole, and a first through groove extending to the outer surface of the positioning seat is formed outside the positioning hole. The connecting rod extends out of the positioning seat through the first through groove.

[0011] Optionally, a second through groove extending to the outer surface of the lower die cutter block is formed inside the lower die cutter block, and the side of the connecting rod away from the positioning seat is slidably connected inside the second through groove.

[0012] Optionally, a rectangular connecting groove is formed on the connecting rod, and the connecting rod is sleeved outside the piston rod through the connecting groove.

[0013] Optionally, the linear guiding device comprises a guide rail and a guide block. The guide rail is installed on the stamping die, the guide block is installed on the positioning seat, and the guide block is slidably connected to the guide rail. The connecting plate is installed on the guide rail.

[0014] (III) Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. When the upper die cutter block presses downward for flanging or trimming, the positioning rod can be pushed downward, and thereby air can be extracted into the inner cavity of the suction cup through the connecting pipe, so as to adsorb and fix the sheet metal part through the suction cup, thereby achieving the purpose of positioning and fixing the sheet metal part. During the flanging or trimming process, since the suction cup adsorbs and fixes the sheet metal part, the stability of the positioning of the sheet metal part can be effectively improved. Therefore, the sheet metal part can be prevented from shifting and warping, thereby ensuring the accuracy of stamping processing, and further improving the yield rate of stamping processing to a certain extent.

[0017] 2. Adjusting by turning the screw rod can not only make the adjustment work more accurate, enabling more precise control of the distance between the positioning rod and the upper die block, but also make the adjustment work easier to operate, more time-saving and labor-saving, and improve the convenience of the adjustment work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view sectional structure schematic diagram of the present utility model;

[0019] Figure 2 It is a side view three-dimensional partial structure schematic diagram of the present utility model;

[0020] Figure 3 It is a side view sectional partial structure schematic diagram of the present utility model.

[0021] In the figure: 1. positioning seat; 101. positioning hole; 102. first through groove; 2. positioning rod; 3. return spring; 4. lower die block; 401. piston cavity; 402. second through groove; 5. upper die block; 6. suction cup; 7. connecting pipe; 8. piston; 9. piston rod; 10. connecting rod; 1001. connecting groove; 11. connecting spring; 12. guide rail; 13. guide block; 14. connecting plate; 15. nut; 16. screw rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] The present utility model provides as Figures 1 to 2Embodiment 1 of the positioning mechanism of an automotive stamping die shown: The positioning seat 1 and the lower die blade 4. An installation hole is provided on the upper surface of the lower die blade 4. A suction cup 6 is provided inside the installation hole. A piston chamber 401 is provided inside the lower die blade 4, and a connecting pipe 7 is connected between the piston chamber 401 and the suction cup 6. A piston 8 is slidably installed inside the piston chamber 401. A piston rod 9 is fixedly connected to the lower part of the piston 8. A positioning rod 2 is slidably connected inside the positioning seat 1. A return spring 3 is provided between the positioning rod 2 and the upper surface of the positioning seat 1. A connecting rod 10 is fixedly connected to the positioning rod 2. A positioning hole 101 is provided inside the positioning seat 1. The positioning rod 2 is slidably installed inside the positioning hole 101, and a first through groove 102 extending to the outer surface of the positioning seat 1 is provided outside the positioning hole 101. The connecting rod 10 extends out of the positioning seat 1 through the first through groove 102. A second through groove 402 extending to the outer surface of the lower die blade 4 is provided inside the lower die blade 4. One side of the connecting rod 10 away from the positioning seat 1 is slidably connected inside the second through groove 402. The connecting rod 10 is sleeved on the piston rod 9, and a connecting spring 11 is provided between the connecting rod 10 and the piston rod 9. A rectangular connecting groove 1001 is provided on the connecting rod 10. The connecting rod 10 is sleeved on the outside of the piston rod 9 through the connecting groove 1001.

[0024] Before stamping, place the sheet metal part on the lower die blade 4, and position the edge of the sheet metal part through the positioning rod 2. At this time, the lower surface of the sheet metal part contacts the open end of the suction cup 6. When the upper die blade 5 presses downward for flanging or trimming, the lower surface of the upper die blade 5 will first push the positioning rod 2 downward, causing the positioning rod 2 to slide downward, compressing the return spring 3, and pushing the piston rod 9 and the piston 8 downward by a certain distance through the connecting rod 10 and the connecting spring 11, so that the piston 8 slides downward inside the piston chamber 401, and thereby extracts air into the inner cavity of the suction cup 6 through the connecting pipe 7, so as to adsorb and fix the sheet metal part through the suction cup 6, so as to achieve the purpose of positioning and fixing the sheet metal part. Then the upper die blade 5 continues to move downward to flang or trim the edge of the sheet metal part, which can effectively prevent the sheet metal part from shifting and warping.

[0025] The setting of the connecting spring 11 is such that after the piston 8 and the piston rod 9 slide downward by a certain distance and stop, under the downward pressure of the upper die blade 5, the positioning rod 2 and the connecting rod 10 will still continue to slide downward. At this time, the connecting spring 11 will be compressed and buffered to prevent damage to the piston rod 9 and the connecting rod 10. When the stamping is completed and the upper die blade 5 moves upward, under the action of the rebound of the return spring 3, the positioning rod 2 and the connecting rod 10 can be reset upward. The connecting rod 10 pulls the piston rod 9 upward through the connecting spring 11 to reset, and thereby resets the piston 8.

[0026] The present utility model provides as Figures 1 to 3Embodiment 2 of the positioning mechanism of an automotive stamping die shown: A linear guiding device connected to the stamping die is provided at the lower part of the positioning seat 1. The linear guiding device includes a guide rail 12 and a guide block 13. The guide rail 12 is installed on the stamping die, the guide block 13 is installed on the positioning seat 1, and the guide block 13 is slidably connected to the guide rail 12. A connecting plate 14 is provided on the linear guiding device. The connecting plate 14 is installed on the guide rail 12. A nut 15 is welded on the connecting plate 14, and a screw rod 16 is threadedly connected to the nut 15. One end of the screw rod 16 is connected to the positioning seat 1.

[0027] When it is necessary to adjust the distance between the positioning rod 2 and the upper die cutter block 5, the screw rod 16 is rotated to drive the positioning seat 1 and the guide block 13 to slide along the guide rail 12, and thereby adjust the distance between the positioning rod 2 and the upper die cutter block 5. Moreover, due to the high precision of the thread, adjusting by rotating the screw rod 16 can not only make the adjustment work more precise, but also more accurately control the distance between the positioning rod 2 and the upper die cutter block 5.

[0028] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A positioning mechanism for an automotive stamping die, comprising a positioning seat (1) and a lower die cutter block (4), characterized in that: The upper surface of the lower die block (4) is provided with mounting holes, and a suction cup (6) is arranged inside the mounting holes. A piston cavity (401) is formed inside the lower die block (4), and a connecting pipe (7) is connected between the piston cavity (401) and the suction cup (6). A piston (8) is slidably mounted inside the piston cavity (401), and a piston rod (9) is fixedly connected to the lower part of the piston (8). A positioning rod (2) is slidably connected inside the positioning seat (1), a connecting rod (10) is fixedly connected to the positioning rod (2), the connecting rod (10) is sleeved on the piston rod (9), and a connecting spring (11) is arranged between the connecting rod (10) and the piston rod (9). A linear guiding device connected to the stamping die is arranged at the lower part of the positioning seat (1). A connecting plate (14) is arranged on the linear guiding device, a nut (15) is welded on the connecting plate (14), a screw rod (16) is threadedly connected to the nut (15), and one end of the screw rod (16) is connected to the positioning seat (1).

2. The positioning mechanism of the automotive stamping die according to claim 1, wherein: A return spring (3) is arranged between the positioning rod (2) and the upper surface of the positioning seat (1).

3. The positioning mechanism of the automotive stamping die according to claim 1, wherein: A positioning hole (101) is formed inside the positioning seat (1), the positioning rod (2) is slidably mounted inside the positioning hole (101), and a first through groove (102) extending to the outer surface of the positioning seat (1) is formed outside the positioning hole (101). The connecting rod (10) extends out of the positioning seat (1) through the first through groove (102).

4. The positioning mechanism of the automotive stamping die according to claim 1, characterized in that: A second through groove (402) extending to the outer surface of the lower die block (4) is formed inside the lower die block (4), and the side of the connecting rod (10) away from the positioning seat (1) is slidably connected inside the second through groove (402).

5. The positioning mechanism of the automotive stamping die according to claim 1, characterized in that: A rectangular connecting groove (1001) is formed on the connecting rod (10), and the connecting rod (10) is sleeved on the outside of the piston rod (9) through the connecting groove (1001).

6. The positioning mechanism of the automotive stamping die according to claim 1, characterized in that: The linear guiding device includes a guide rail (12) and a guide block (13). The guide rail (12) is mounted on the stamping die, the guide block (13) is mounted on the positioning seat (1), and the guide block (13) is slidably connected to the guide rail (12). The connecting plate (14) is mounted on the guide rail (12).

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