A die for stamping a body part

Abstract

The utility model relates to the technical field of body parts stamping, specifically a die for body parts stamping, including upper die holder and the lower die holder below upper die holder, the bottom of upper die holder is installed with male die, the top of lower die holder is installed with female die, the bottom of male die is fixed with two bases symmetrically, the outside of each base is detachably connected with an upper blade edge insert, the top of female die is provided with stamping cavity, the inside of stamping cavity is detachably connected with two lower blade edge inserts, the inner wall of each lower blade edge insert and the outer wall of each upper blade edge insert are provided with multiple oil outlets at equal intervals, detachable upper blade edge inserts and lower blade edge inserts are arranged in the key area of sheet metal and die contact, when the upper blade edge insert and lower blade edge insert are worn due to long time work, the upper blade edge insert or lower blade edge insert can be directly disassembled and replaced, the whole die need not be replaced, and cost can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of stamping technology for car body parts, specifically a mold for stamping car body parts. Background Technology

[0002] Body manufacturing is a core part of the automotive industry. Body panels (such as doors, hoods, fenders, and side panels) and structural components (such as longitudinal beams and cross beams) constitute the main body of the car body. When processing body parts (such as side panels), stamping is usually used. Stamping dies are key equipment in stamping production lines. Their working principle is that under the huge pressure provided by a large press, the metal sheet undergoes plastic deformation in the die cavity. After multiple processes such as drawing, trimming, punching, and flanging, the desired three-dimensional shape is finally obtained.

[0003] In the punching process, such as when processing the side panel of a car body, a punch is used to punch holes for installing the door. During punching, there is intense friction and impact between the working parts of the die and the sheet metal, resulting in severe wear on the cutting edges of the punch and die. This not only affects the surface quality of the part (causing scratches) but also gradually changes the size of the die cavity, leading to a decrease in part precision. To ensure part precision, it is necessary to stop the machine for maintenance or replace the entire die, which not only affects production efficiency and reduces production speed but also increases costs. To address this problem, a die for stamping car body parts is now provided. Utility Model Content

[0004] The purpose of this invention is to provide a die for stamping body parts to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A die for stamping body parts includes an upper die base and a lower die base located below the upper die base. A punch is installed at the bottom end of the upper die base, and a die is installed at the top end of the lower die base. The bottom end of the punch is symmetrically fixed with two bases. Each base is detachably connected to an upper cutting edge insert on its outer side. The top end of the die is provided with a stamping cavity. Inside the stamping cavity, two lower cutting edge inserts are detachably connected. The inner contour shape of each lower cutting edge insert matches the outer contour shape of an upper cutting edge insert. Multiple oil outlets are equidistantly provided on the inner wall of each lower cutting edge insert and the outer wall of each upper cutting edge insert.

[0006] As a further embodiment of this utility model: multiple clearance grooves are provided on the surface of each base and inside the stamping cavity. Several mounting blocks that match the clearance grooves are fixed on the inner wall of each upper cutting edge insert and the outer wall of each lower cutting edge insert. Each mounting block is snapped into the inside of a clearance groove, and multiple mounting holes are provided on each mounting block.

[0007] As a further embodiment of this utility model: each lower cutting edge insert and each upper cutting edge insert have a flow channel inside. Multiple oil outlets located on the inner wall of the lower cutting edge insert are connected to the flow channel inside the lower cutting edge insert. Multiple oil outlets located on the outer wall of the upper cutting edge insert are connected to the flow channel inside the upper cutting edge insert. A connecting pipe is fixed at the bottom end of the lower cutting edge insert, which is connected to the flow channel inside the lower cutting edge insert. A connecting pipe is fixed at the top end of the upper cutting edge insert, which is connected to the flow channel inside the valve.

[0008] As a further embodiment of this utility model: two conveying channels are provided on one side of both the die and the punch, and one end of each connecting pipe is inserted into the interior of one conveying channel. Two oil inlet pipes are fixed on the outer walls of both the punch and the die, and each oil inlet pipe is connected to the end of a conveying channel away from the connecting pipe.

[0009] As a further embodiment of this invention, a valve is installed on each oil inlet pipe.

[0010] As a further embodiment of this utility model: each mounting hole has a countersunk hole at the end away from the clearance groove, the bottom end face of the upper cutting edge insert is flush with the bottom end face of the base, and the top end face of the lower cutting edge insert is flush with the plane where the bottom of the inner cavity of the stamping chamber is located.

[0011] As a further embodiment of this utility model: multiple through holes are provided on the upper mold base, and a guide rod is slidably connected inside each through hole, with the bottom end of each guide rod being fixedly connected to the lower mold base.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model discloses a die for stamping body parts. A detachable upper cutting edge insert is provided on the outer side of the base. The upper cutting edge insert and the base together form a punch for punching sheet metal. A detachable lower cutting edge insert is provided inside the stamping cavity. The stamping cavity and the lower cutting edge insert together form a cavity that matches the punch, thus facilitating the stamping process of the sheet metal. Specifically, detachable upper and lower cutting edge inserts are provided in the critical area where the sheet metal contacts the die. When the upper or lower cutting edge insert wears down due to prolonged use, it can be directly disassembled and replaced without replacing the entire die, effectively reducing costs.

[0013] 2. This utility model discloses a die for stamping body parts. By opening multiple oil outlets on the upper and lower cutting edge inserts, lubricating oil can be delivered into the flow channel through the oil inlet pipe. The lubricating oil inside the flow channel can be accurately and evenly delivered to the key areas where the sheet metal contacts the die through the multiple oil outlets. This reduces the coefficient of friction, slows down the wear rate of the upper and lower cutting edge inserts, significantly increases the replacement interval and total service life, reduces downtime caused by replacing the upper or lower cutting edge inserts, improves the overall die efficiency, and reduces costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 This is the front view of the present invention.

[0016] Figure 3 This is a schematic diagram of the structure of the lower mold base in this utility model.

[0017] Figure 4 This utility model Figure 3 A magnified structural diagram of part A in the middle.

[0018] Figure 5 This is a schematic diagram of the upper mold base in this utility model.

[0019] Figure 6 This is a schematic diagram of the structure of the lower cutting edge insert and the stamping cavity in this utility model.

[0020] Figure 7 This utility model Figure 6 A magnified structural diagram of part B.

[0021] Figure 8 This is a schematic diagram of the cross-sectional structure of this utility model.

[0022] Figure 9 This utility model Figure 8 A magnified structural diagram of section C.

[0023] Among them: 11. Upper die base; 12. Lower die base; 13. Through hole; 14. Guide rod; 15. Punch; 16. Die; 17. Upper cutting edge insert; 18. Base; 20. Lower cutting edge insert; 21. Stamping cavity; 22. Oil outlet; 23. Flow channel; 24. Connecting pipe; 25. Conveying channel; 26. Oil inlet pipe; 27. Valve; 28. Clearance groove; 29. ​​Mounting block; 30. Mounting hole; 31. Countersunk hole; 32. Finished part. Detailed Implementation

[0024] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0025] The present invention provides the following preferred embodiments: Example 1, as Figures 1-9 As shown, a die for stamping body parts includes an upper die base 11 and a lower die base 12 located below the upper die base 11. A punch 15 is installed at the bottom end of the upper die base 11, and a die 16 is installed at the top end of the lower die base 12. It should be noted that during use, the die is fixed on the worktable by the lower die base 12, and the output end of the press needs to be connected to the top end of the upper die base 11 to realize the lifting and lowering of the upper die base 11, thereby completing the subsequent stamping work. The bottom end of the punch 15 is symmetrically fixed with two bases 18. Each base 18 is detachably connected to an upper cutting edge insert 17 on its outer side. The top end of the die 16 is provided with a stamping cavity 21. The inside of the stamping cavity 21 is detachably connected with two lower cutting edge inserts 20. The inner contour shape of each lower cutting edge insert 20 matches the outer contour shape of an upper cutting edge insert 17. A detachable upper cutting edge insert 17 is provided on the outer side of the base 18. The upper cutting edge insert 17 and the base 18 can form a punch for punching sheet metal. A detachable lower cutting edge insert 20 is provided inside the stamping cavity 21. The stamping cavity 21 and the lower cutting edge insert 20 can form a cavity that matches the punch, thereby facilitating the stamping process of sheet metal. Specifically, the finished product after stamping is shown in the reference. Figure 1 The finished part 32 has two punch holes of the same size as the punch formed by the upper cutting edge insert 17 and the base 18. That is, the detachable upper cutting edge insert 17 and lower cutting edge insert 20 are set in the key area where the sheet metal contacts the mold. When the upper cutting edge insert 17 and lower cutting edge insert 20 wear due to long-term operation, the upper cutting edge insert 17 or the lower cutting edge insert 20 can be directly disassembled and replaced without replacing the entire mold, which can effectively reduce costs.

[0026] It should be noted that the stamping cavity 21 contains the sheet metal to be stamped, and the shape of the stamping cavity 21 matches the shape of the sheet metal. The stamping cavity 21 can limit the position of the sheet metal.

[0027] Multiple oil outlets 22 are provided at equal intervals on the inner wall of each lower cutting edge insert 20 and the outer wall of each upper cutting edge insert 17.

[0028] like Figures 1-9As shown, multiple clearance grooves 28 are provided on the surface of each base 18 and inside the stamping cavity 21. Several mounting blocks 29 that match the clearance grooves 28 are fixed on the inner wall of each upper cutting edge insert 17 and the outer wall of each lower cutting edge insert 20. Each mounting block 29 is snapped into the inside of a clearance groove 28, and multiple mounting holes 30 are provided on each mounting block 29. Specifically, threaded holes that match the mounting holes 30 are provided on the inner wall surface of each clearance groove 28. When installation is required, the mounting block 29 can be fixedly installed inside the clearance groove 28 by the cooperation of bolts, mounting holes 30 and threaded holes, thereby realizing the connection between the lower cutting edge insert 20 and the stamping cavity 21, and the connection between the upper cutting edge insert 17 and the base 18.

[0029] like Figures 1-9 As shown, each lower cutting edge insert 20 and each upper cutting edge insert 17 has a flow channel 23 inside. Multiple oil outlets 22 located on the inner wall of the lower cutting edge insert 20 are connected to the flow channel 23 inside the lower cutting edge insert 20. Multiple oil outlets 22 located on the outer wall of the upper cutting edge insert 17 are connected to the flow channel 23 inside the upper cutting edge insert 17. A connecting pipe 24 is fixed at the bottom end of the lower cutting edge insert 20 and is connected to the flow channel 23 inside the lower cutting edge insert 20. A connecting pipe 24 is fixed at the top end of the upper cutting edge insert 17 and is connected to the flow channel 23 inside the valve 27.

[0030] like Figures 1-9 As shown, both the die 16 and the punch 15 have two conveying channels 25 on one side. One end of each connecting pipe 24 is inserted into the interior of a conveying channel 25. Specifically, it should be noted that the outer wall of the connecting pipe 24 is equipped with a sealing ring for sealing. The sealing connection of the two pipes through the sealing ring is existing technology and will not be described in detail here. Both the punch 15 and the die 16 have two oil inlet pipes 26 fixed on their outer walls. Each oil inlet pipe 26 is connected to the end of a conveying channel 25 away from the connecting pipe 24. Before using this mold, each oil inlet pipe 26 is first connected to the pipeline for conveying lubricating oil. The lubricating oil is then conveyed to the conveying channel 25 through the oil inlet pipe 26 via the external pipeline. Since the connecting pipe 24 is inserted into the conveying channel 25, that is, the connecting pipe 24 and the conveying channel 25 are in a connected state, the lubricating oil inside the conveying channel 25 can enter the interior of the connecting pipe 24, and then enter the interior of the flow channel 23. Finally, it flows out through multiple oil outlets 22 to the critical area where the sheet metal contacts the mold. This can reduce the coefficient of friction, slow down the wear rate of the upper cutting edge insert 17 and the lower cutting edge insert 20, and significantly increase the replacement interval and total service life. It reduces the downtime caused by replacing the upper cutting edge insert 17 or the lower cutting edge insert 20, improves the overall mold efficiency, and reduces costs.

[0031] like Figures 1-9 As shown, each oil inlet pipe 26 is equipped with a valve 27. The valve 27 is used to close and open, and can also control the amount of lubricating oil entering the flow channel 23. The valve 27 is existing technology and will not be described in detail here.

[0032] like Figures 1-9 As shown, each mounting hole 30 has a countersunk hole 31 at the end away from the clearance groove 28. The countersunk hole 31 allows the bolt to be located inside the countersunk hole 31, which serves to avoid and install the bolt. The bottom end face of the upper cutting edge insert 17 is flush with the bottom end face of the base 18, and the top end face of the lower cutting edge insert 20 is flush with the plane at the bottom of the inner cavity of the stamping cavity 21. The flush setting ensures that the sheet metal will not be damaged, thereby ensuring the quality of the finished part 32.

[0033] like Figures 1-9 As shown, the upper die base 11 has multiple through holes 13, and a guide rod 14 is slidably connected inside each through hole 13. The bottom end of each guide rod 14 is fixedly connected to the lower die base 12. In use, when the press drives the upper die base 11 to move downward, the upper die base 11 can slide on the multiple guide rods 14, which plays a guiding role. When the upper die base 11 moves downward, it can simultaneously drive the punch 15, the upper cutting edge insert 17 and the base 18 to move, so as to realize the stamping of the sheet metal. It should be noted that the press is existing technology and will not be described in detail here.

[0034] The beneficial effects of this utility model are specifically reflected in the fact that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A die for stamping body parts, comprising an upper die holder (11) and a lower die holder (12) located below the upper die holder (11), characterized in that, A punch (15) is installed at the bottom of the upper mold base (11), and a die (16) is installed at the top of the lower mold base (12). The bottom end of the punch (15) is symmetrically fixed with two bases (18), and an upper cutting edge insert (17) is detachably connected to the outside of each base (18). The top end of the die (16) is provided with a stamping cavity (21), and two lower cutting edge inserts (20) are detachably connected inside the stamping cavity (21). The inner contour shape of each lower cutting edge insert (20) matches the outer contour shape of an upper cutting edge insert (17). Multiple oil outlets (22) are provided at equal intervals on the inner wall of each lower cutting edge insert (20) and the outer wall of each upper cutting edge insert (17).

2. The die for stamping body parts according to claim 1, characterized in that, Multiple clearance grooves (28) are provided on the surface of each base (18) and inside the stamping cavity (21). Several mounting blocks (29) matching the clearance grooves (28) are fixed on the inner wall of each upper cutting edge insert (17) and the outer wall of each lower cutting edge insert (20). Each mounting block (29) is snapped into the inside of a clearance groove (28), and multiple mounting holes (30) are provided on each mounting block (29).

3. A die for stamping body parts according to claim 2, characterized in that, Each lower cutting edge insert (20) and each upper cutting edge insert (17) has a flow channel (23) inside. Multiple oil outlets (22) located on the inner wall of the lower cutting edge insert (20) are connected to the flow channel (23) inside the lower cutting edge insert (20). Multiple oil outlets (22) located on the outer wall of the upper cutting edge insert (17) are connected to the flow channel (23) inside the upper cutting edge insert (17). A connecting pipe (24) is fixed at the bottom of the lower cutting edge insert (20), and the connecting pipe (24) is connected to the flow channel (23) inside the lower cutting edge insert (20). A connecting pipe (24) is fixed at the top of the upper cutting edge insert (17), and the connecting pipe (24) is connected to the flow channel (23) inside the valve (27).

4. A die for stamping body parts according to claim 3, characterized in that, Two conveying channels (25) are provided on one side of both the die (16) and the punch (15). One end of each connecting pipe (24) is inserted into the interior of a conveying channel (25). Two oil inlet pipes (26) are fixed on the outer walls of both the punch (15) and the die (16). Each oil inlet pipe (26) is connected to the end of a conveying channel (25) away from the connecting pipe (24).

5. A die for stamping body parts according to claim 4, characterized in that, A valve (27) is installed on each oil inlet pipe (26).

6. A die for stamping body parts according to claim 5, characterized in that, Each mounting hole (30) has a countersunk hole (31) at the end away from the relief groove (28). The bottom end face of the upper cutting edge insert (17) is flush with the bottom end face of the base (18), and the top end face of the lower cutting edge insert (20) is flush with the plane where the bottom of the inner cavity of the stamping cavity (21) is located.

7. A die for stamping body parts according to claim 6, characterized in that, The upper mold base (11) has multiple through holes (13), and a guide rod (14) is slidably connected inside each through hole (13). The bottom end of each guide rod (14) is fixedly connected to the lower mold base (12).

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