Punching die for automobile door part

Abstract

The invention provides a punching die for an automobile door part, and belongs to the technical field of punching dies. The punching die for the automobile door piece comprises an upper die base, a punch, a punch base plate, a punch fixing plate, a material pressing plate, a material pressing fixing plate, a female die, a female die base plate and a lower die base, two hole grooves are formed in the female die, female die inserts are clamped and embedded in the hole grooves, and punching holes allowing the punch to be inserted in are formed in the female die inserts. The female die is provided with a clamp mechanism for simultaneously clamping two automobile door parts, the clamp mechanism comprises a left air cylinder, a right air cylinder and a center positioning assembly, the left air cylinder, the right air cylinder and the center positioning assembly are all fixed on the female die, and the left air cylinder and the right air cylinder are located on the two sides of the center positioning assembly; the front ends of telescopic rods of the left air cylinder and the right air cylinder are each fixedly provided with a pressing block capable of extruding the automobile door part to the side face of the center positioning assembly. According to the punching device, rapid and accurate positioning is conducted, displacement is not likely to happen in the punching process, two automobile door parts are positioned and punched at a time, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of stamping dies and relates to a punching die for automobile door parts. Background Art

[0002] Automotive door components are special-shaped parts used to connect the door to the vehicle body. They consist of a flat base plate and two connecting plates, which are parallel to and perpendicularly fixed to the base plate. A positioning groove is located between the two connecting plates, and mounting holes are provided on both the base plate and the connecting plates. The mounting holes are formed using a punching die. Existing punching dies are difficult to position automotive door components, requiring specialized fixtures. Any changes in size or hole position require the entire fixture to be replaced, and even the entire die set must be redesigned. Furthermore, punching can only be performed on a single part, and manual placement of the door component in the correct punching position is required, resulting in low production efficiency. Summary of the Invention

[0003] The purpose of the present invention is to address the above-mentioned problems in the existing technology and propose a punching die for automobile door parts. The loading is simple and fast, and two automobile door parts can be accurately positioned and punched quickly and simultaneously, greatly improving production efficiency.

[0004] The purpose of the present invention can be achieved through the following technical solutions: a punching die for automobile door parts, comprising an upper die base, a punch, a punch pad, a punch fixing plate, a pressure plate, a pressure fixing plate, a die, a die pad and a lower die base, characterized in that the upper die base, the punch pad and the punch fixing plate are fixed in sequence by bolts, the punch is passed through the punch fixing plate, the upper end of the punch abuts against the punch pad, a guide post is also fixed on the upper die base, the pressure plate is fixed on the pressure fixing plate, the pressure fixing plate is located below the punch fixing plate and slides with the guide post, a guide sleeve is fixed on the lower die base that slides with the guide post, a limiting pin is fixed on the upper die base, the lower end of the limiting pin passes through the pressure fixing plate and is connected to a limiting disc, a spring hole is opened on the punch pad and the punch fixing plate, and a supporting spring is provided in the spring hole to abut against the pressure plate; The die, die pad and lower die base are fixed together in sequence by bolts. The die is provided with two hole slots, and die inserts are embedded in the hole slots. The die insert is provided with a punching hole for inserting the punch. The die is provided with a clamping mechanism for clamping two automobile door parts at the same time; the clamping mechanism includes a left cylinder, a right cylinder and a center positioning assembly. The left cylinder, the right cylinder and the center positioning assembly are all fixed on the die, and the left cylinder and the right cylinder are located on both sides of the center positioning assembly. The front ends of the telescopic rods of the left cylinder and the right cylinder are respectively fixed with clamping blocks that can squeeze the automobile door parts to the sides of the center positioning assembly.

[0005] The car door is placed on the die, and the left and right cylinders are activated. The clamping block pushes the car door forward and clamps it together with the center positioning assembly, preventing it from moving horizontally. The punch press then drives the upper die holder down, and the blank holder and the blank holder first contact the die. The blank holder holds the car door in place, preventing it from shaking up and down. The upper die holder continues to descend, and the blank holder compresses the support spring, causing it to contract, until the punch penetrates the car door and enters the blanking hole, completing the punching process.

[0006] Furthermore, the center positioning assembly includes a positioning base plate, a positioning seat, a rotating rod and a rotating spring. The positioning seat is fixed to the positioning base plate by bolts. A mounting groove is provided on the positioning seat. The two ends of the mounting groove are respectively rotatably connected to the positioning blocks. An ejection hole is provided on the die. The rotating rod and the rotating spring are located in the ejection hole. The upper end of the rotating rod abuts against the tail of the positioning block, the upper end of the rotating spring abuts against the rotating rod, and the lower end of the rotating spring abuts against the die pad.

[0007] The rotation spring applies force to the lower end of the rotating rod, causing it to move upward. The upper end of the rotating rod acts on the positioning block, forcing the front end of the positioning block to press downward against the positioning seat, preventing the front end of the positioning block from swinging upward when positioning the automobile door component. After punching is completed, the clamping block retreats, and the worker can now lift the automobile door component upward. The automobile door component drives the positioning block to swing upward and rotate, compressing the rotation spring until the front end of the positioning block is released from the automobile door component. After the automobile door component is removed, the rotation spring pushes the rotating rod upward, driving the positioning block to rotate and return it to a horizontal position.

[0008] Furthermore, the front end of the positioning block is conical, and the positioning block can be inserted into the positioning groove of the automobile door component. The two side surfaces of the positioning block are in contact with the groove wall of the positioning groove. An axial hole is opened at the tail of the positioning block, and a rotating shaft bolt is passed through the axial hole.

[0009] The positioning block has a tapered front end, which allows the positioning block to slide quickly and accurately into the positioning groove. There is no need to adjust the position of the car door component in advance, nor is there a need to align the positioning groove with the positioning block. The requirements for the placement of the car door component are relatively loose.

[0010] Furthermore, the upper end surface of the die insert is flush with the die, and the upper end surface of the die insert abuts against the bottom surface of the positioning base plate.

[0011] The positioning base plate presses the die insert to prevent the die insert from falling out of the hole groove, and the automobile door component can easily slide onto the die insert.

[0012] Furthermore, the front end of the pressing block has two extrusion heads protruding forward, the positioning base plate is in an isosceles trapezoidal shape, and two protruding stop heads are provided on both sides of the positioning base plate.

[0013] Furthermore, the two extrusion heads are arranged one in front of the other, and the front end of the extrusion heads has an extrusion surface, and the extrusion surfaces of the two extrusion heads are located on the same plane. The two stop heads are arranged one in front of the other, and the front end of the stop heads has a supporting surface, and the supporting surfaces of the two stop heads are located on the same plane, and the extrusion surfaces of the extrusion heads and the supporting surfaces of the stop heads are parallel to each other.

[0014] Since there is a certain angle between the bottom plate body and the positioning groove of the automobile door component, in order to make the positioning groove and the positioning block in the same straight line, the bottom plate body needs to be moved obliquely, so the extrusion heads of the clamping block are arranged one in front and one behind, which can push the automobile door component forward obliquely.

[0015] Furthermore, an embedding hole is opened on the pressing fixing plate, and the pressing plate is embedded in the embedding hole and fixed by bolts.

[0016] Furthermore, a raised extrusion column head is fixed on the pressing plate, a vertical sliding hole is opened on the die, a limiting bolt is slidingly provided on the lower die seat and passes through the die pad, a rebound block is provided in the vertical sliding hole, the rebound block is fixed to the upper end of the limiting bolt, an upward push spring is sleeved on the limiting bolt, the lower end of the upward push spring rests on the lower die seat, and the upper end of the upward push spring rests on the lower end face of the rebound block, and when the extrusion column head moves downward, it can be inserted into the vertical sliding hole and push the rebound block to move downward.

[0017] Furthermore, a pressing groove is provided on the pressing plate, and after the pressing plate is lowered, the bottom wall of the pressing groove can abut against the upper surface of the automobile door component.

[0018] Furthermore, the die is provided with a plurality of limiting strips, which are located on both sides of the die insert. The limiting strips facilitate workers to place the car door parts, and the car door parts can be placed on the die between the two limiting strips.

[0019] Compared with the existing technology, the punching die for automobile door parts has the following advantages: 1. The cylinder pushes the oblique automobile door component forward, allowing the positioning block to accurately find and insert into the positioning groove of the automobile door component for fast and accurate positioning. Displacement is not easy to occur during the punching process. Two automobile door components can be positioned and punched at a time, improving production efficiency.

[0020] 2. When placing an automobile door, simply ensure the door is oriented correctly. Using the cylinder to push the door forward, the positioning block, with its tapered front end, will naturally slide into the positioning groove, achieving automatic positioning and greatly improving loading speed.

[0021] 3. The positioning block is located in the positioning groove so that the automobile door part cannot move left and right. The pressing plate presses the automobile door part from above, so the automobile door part will not shake up and down, thereby improving the accuracy of punching.

[0022] 4. Since the positioning block is pressed on the car door part during punching, it is inconvenient to remove the car door part. In order to facilitate material removal, the positioning block is designed to rotate around the rotating shaft bolt, and the rotating rod is pressed against the tail end of the positioning block. The car door part can be directly picked up upwards. After removing the material, the positioning block is returned to its original position by rotating the spring, thereby achieving the purpose of quick and convenient material removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the punching die of the automobile door part.

[0024] Figure 2 It is a front view of the punching die for the automobile door part.

[0025] Figure 3 It is a transverse cross-sectional view of the punching die of the automobile door part.

[0026] Figure 4 It is a longitudinal sectional view of the punching die of the automobile door part.

[0027] Figure 5 It is a schematic diagram of the internal structure of the punching die of the automobile door part.

[0028] Figure 6 It is a structural diagram of the die.

[0029] Figure 7 It is a structural diagram of the pressing plate.

[0030] Figure 8 This is a top view of the center positioning assembly.

[0031] Figure 9 It is a perspective view of the center positioning component.

[0032] Figure 10 It is a structural diagram of the compression block.

[0033] Figure 11 It is a structural diagram of automobile door parts.

[0034] In the figure, 1, upper die base; 2, punch; 3, punch pad; 4, punch fixing plate; 5, press plate; 51, extrusion column head; 52, press groove; 6, press fixing plate; 7, die; 71, vertical slide hole; 72, limit bolt; 73, rebound block; 74, push-up spring; 75, limit bar; 8, die pad; 9, lower die base; 10, guide column; 11, guide sleeve; 12, limit pin; 13, limit Disc; 14. Support spring; 15. Die insert; 16. Punching hole; 17. Left cylinder; 18. Right cylinder; 19. Center positioning assembly; 191. Positioning base plate; 192. Positioning seat; 193. Rotating rod; 194. Rotating spring; 195. Mounting groove; 196. Positioning block; 197. Stop head; 20. Pressing block; 201. Extrusion head; 21. Automobile door component; 211. Positioning groove. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0036] like Figure 1 、 Figure 2 、 Figure 5 As shown, the punching die of the automobile door includes an upper die base 1, a punch 2, a punch pad 3, a punch fixing plate 4, a pressure plate 5, a pressure fixing plate 6, a die 7, a die pad 8 and a lower die base 9. The upper die base 1, the punch pad 3 and the punch fixing plate 4 are fixed in sequence by bolts. The punch 2 is arranged on the punch fixing plate 4, and the upper end of the punch 2 abuts against the punch pad 3. A guide column 10 is also fixed on the upper die base 1, and the pressure plate 5 is fixed on the pressure fixing plate 6. The pressure fixing plate 6 is located below the punch fixing plate 4 and slides with the guide column 10. A guide sleeve 11 that slides with the guide column 10 is fixed on the lower die base 9. A limiting pin 12 is fixed on the upper die base 1. The lower end of the limiting pin 12 passes through the pressure fixing plate 6 and is connected to a limiting disc 13. Spring holes are opened on the punch pad 3 and the punch fixing plate 4, and a supporting spring 14 abutting against the pressure plate 5 is provided in the spring hole.

[0037] The die 7, die pad 8 and lower die base 9 are fixed together in sequence by bolts. The die 7 is provided with two hole grooves, in which die inserts 15 are embedded. The die insert 15 is provided with a punching hole 16 for inserting the punch 2. The die 7 is provided with a clamping mechanism for clamping two automobile door parts 21 at the same time; the clamping mechanism includes a left cylinder 17, a right cylinder 18 and a center positioning assembly 19. The left cylinder 17, the right cylinder 18 and the center positioning assembly 19 are all fixed on the die 7. The left cylinder 17 and the right cylinder 18 are located on both sides of the center positioning assembly 19. The front ends of the telescopic rods of the left cylinder 17 and the right cylinder 18 are respectively fixed with clamping blocks 20 that can squeeze the automobile door parts 21 on the sides of the center positioning assembly 19.

[0038] like Figure 3 、 Figure 8 、 Figure 9 、 Figure 10 As shown, the center positioning assembly 19 includes a positioning base plate 191, a positioning seat 192, a rotating rod 193 and a rotating spring 194. The positioning seat 192 is fixed to the positioning base plate 191 by bolts. A mounting groove 195 is provided on the positioning seat 192. The two ends of the mounting groove 195 are rotatably connected to positioning blocks 196. An ejection hole is provided on the die 7. The rotating rod 193 and the rotating spring 194 are located in the ejection hole. The upper end of the rotating rod 193 abuts against the tail of the positioning block 196. The upper end of the rotating spring 194 abuts against the rotating rod 193. The lower end of the rotating spring 194 abuts against the die pad 8.

[0039] like Figure 9 As shown, the front end of the positioning block 196 is conical, and the positioning block 196 can be inserted into the positioning groove 211 of the automobile door component 21. The two side surfaces of the positioning block 196 are in contact with the groove wall of the positioning groove 211. The rear end of the positioning block 196 is provided with an axial hole, and a rotating shaft bolt is passed through the axial hole. The positioning block 196 rotates around the rotating shaft bolt.

[0040] The positioning block 196 has a tapered front end, which allows the positioning block 196 to slide quickly and accurately into the positioning groove 211. There is no need to adjust the position of the automobile door component 21 in advance, nor is there a need to align the positioning groove 211 with the positioning block 196. The requirements for the placement of the automobile door component 21 are relatively loose.

[0041] The upper end surface of the die insert 15 is flush with the die 7, and the upper end surface of the die insert 15 abuts against the bottom surface of the positioning base 191. The positioning base 191 presses the die insert 15 to prevent the die insert 15 from falling out of the hole groove, and the automobile door component 21 can easily slide onto the die insert 15.

[0042] like Figure 9 、 Figure 10 As shown, the front end of the pressing block 20 has two extrusion heads 201 protruding forward, the positioning base plate 191 is in an isosceles trapezoidal shape, and two protruding stop heads 197 are provided on both sides of the positioning base plate 191. The two extrusion heads 201 are arranged one in front of the other, and the front ends of the extrusion heads 201 have extrusion surfaces, and the extrusion surfaces of the two extrusion heads 201 are located on the same plane. The two stop heads 197 are arranged one in front of the other, and the front ends of the stop heads 197 have abutment surfaces, and the abutment surfaces of the two stop heads 197 are located on the same plane. The extrusion surfaces of the extrusion heads 201 and the abutment surfaces of the stop heads 197 are parallel to each other.

[0043] like Figure 11As shown, since there is a certain angle between the bottom plate body of the automobile door component 21 and the positioning groove 211, in order to make the positioning groove 211 and the positioning block 196 be in the same straight line, the bottom plate body needs to be moved obliquely, so the extrusion heads 201 of the clamping block 20 are arranged one in front and one behind, which can push the automobile door component 21 forward obliquely.

[0044] The pressing fixing plate 6 is provided with an embedding hole, and the pressing plate 5 is embedded in the embedding hole and fixed by bolts.

[0045] like Figure 4 As shown, a raised extrusion column head 51 is fixed on the pressing plate 5, a vertical sliding hole 71 is opened on the die 7, a limiting bolt 72 that passes through the die pad 8 is slidably provided on the lower die base 9, and a rebound block 73 is provided in the vertical sliding hole 71. The rebound block 73 is fixed to the upper end of the limiting bolt 72, and an upward push spring 74 is sleeved on the limiting bolt 72. The lower end of the upward push spring 74 rests on the lower die base 9, and the upper end of the upward push spring 74 rests on the lower end surface of the rebound block 73. When the extrusion column head 51 moves downward, it can be inserted into the vertical sliding hole 71 and push the rebound block 73 to move downward.

[0046] like Figure 7 As shown, a pressing groove 52 is formed on the pressing plate 5 . After the pressing plate 5 is lowered, the bottom wall of the pressing groove 52 can abut against the upper surface of the automobile door component 21 .

[0047] like Figure 6 As shown, the die 7 has a plurality of limiting strips 75, which are located on both sides of the die insert 15. The limiting strips 75 facilitate workers to place the car door part 21, and the car door part 21 is placed on the die 7 between the two limiting strips 75.

[0048] Workflow: Place the automobile door component 21 on the die 7, start the left cylinder 17 and the right cylinder 18, the pressing block 20 pushes the automobile door component 21 forward, and the extrusion head 201 of the pressing block 20 pushes the tilted automobile door component 21 forward. During the movement, the front end of the positioning block 196 is inserted into the positioning groove 211 on the automobile door component 21 until the automobile door component 21 is against the stop head 197, completing the positioning process and preventing the automobile door component 21 from moving horizontally. After that, the punching machine drives the upper die base 1 to descend, and the blank fixing plate 6 brings the blank pressing plate 5 into contact with the die 7 first. The blank pressing plate 5 presses the automobile door component 21 so that the automobile door component 21 cannot shake up and down. The upper die base 1 continues to descend. Due to the presence of the support spring 14, the blank pressing plate 5 squeezes the support spring 14 to shrink the support spring 14 until the punch 2 passes through the automobile door component 21 and is inserted into the blanking hole 16, completing the punching process. The upper die holder 1 moves upward, and the upward spring 74 pushes the rebound block 73 upward. The rebound block 73 pushes the extrusion column head 51 away from the vertical slide hole 71, separating the pressing plate 5 from the die 7. The left cylinder 17 and the right cylinder 18 drive the pressing block 20 to retract. The rotation spring 194 applies force to the lower end of the rotation rod 193, causing the rotation rod 193 to move upward. The upper end of the rotation rod 193 acts on the positioning block 196, causing the front end of the positioning block 196 to abut against the positioning seat 192 downward, preventing the front end of the positioning block 196 from swinging upward when positioning the automobile door component 21. After punching is completed, the pressing block 20 retreats. At this time, the worker can lift the automobile door component 21 upwards. The automobile door component 21 drives the positioning block 196 to swing upward and rotate, so that the rotating spring 194 is compressed until the front end of the positioning block 196 is separated from the automobile door component 21. After taking out the automobile door component 21, the rotating spring 194 pushes the rotating rod 193 to move upward, driving the positioning block 196 to rotate, so that the positioning block 196 returns to a horizontal position.

[0049] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

Claims

1. A punching die for automobile door parts, comprising an upper die base (1), a punch (2), a punch pad (3), a punch fixing plate (4), a pressure plate (5), a pressure fixing plate (6), a die (7), a die pad (8) and a lower die base (9), characterized in that: The upper die base (1), the punch pad (3), and the punch fixing plate (4) are fixed in sequence by bolts, the punch (2) is inserted into the punch fixing plate (4), and the upper end of the punch (2) abuts against the punch pad (3). A guide column (10) is also fixed on the upper die base (1), the pressing plate (5) is fixed on the pressing fixing plate (6), the pressing fixing plate (6) is located below the punch fixing plate (4) and is slidably matched with the guide column (10), a guide sleeve (11) slidably matched with the guide column (10) is fixed on the lower die base (9), a limiting pin (12) is fixed on the upper die base (1), the lower end of the limiting pin (12) passes through the pressing fixing plate (6) and is connected to the limiting disc (13), a spring hole is opened on the punch pad (3) and the punch fixing plate (4), and a support spring (14) abutting against the pressing plate (5) is provided in the spring hole; The die (7), the die pad (8), and the lower die base (9) are fixed together in sequence by bolts. The die (7) is provided with two hole slots, and a die insert (15) is embedded in the hole slots. The die insert (15) is provided with a punching hole (16) for inserting a punch (2). The die (7) is provided with a clamping mechanism for simultaneously clamping two automobile door parts (21); the clamping mechanism includes a left cylinder (17), a right cylinder (18), and a center positioning assembly (19). The left cylinder (17), the right cylinder (18), and the center positioning assembly (19) are all fixed on the die (7). The left cylinder (17) and the right cylinder (18) are located on both sides of the center positioning assembly (19). The front ends of the telescopic rods of the left cylinder (17) and the right cylinder (18) are respectively fixed with a pressing block (20) that can squeeze the automobile door part (21) on the side of the center positioning assembly (19).

2. The punching die for automobile door parts according to claim 1, characterized in that: The center positioning assembly (19) includes a positioning base plate (191), a positioning seat (192), a rotating rod (193) and a rotating spring (194). The positioning seat (192) is fixed to the positioning base plate (191) by bolts. The positioning seat (192) is provided with a mounting groove (195). Both ends of the mounting groove (195) are rotatably connected to positioning blocks (196). The die (7) is provided with an ejection hole. The rotating rod (193) and the rotating spring (194) are located in the ejection hole. The upper end of the rotating rod (193) abuts against the tail of the positioning block (196). The upper end of the rotating spring (194) abuts against the rotating rod (193). The lower end of the rotating spring (194) abuts against the die pad (8).

3. The punching die for automobile door parts according to claim 2, characterized in that: The front end of the positioning block (196) is tapered, and the positioning block (196) can be inserted into the positioning groove (211) of the automobile door member (21). The two side surfaces of the positioning block (196) are in contact with the groove wall of the positioning groove (211). The rear end of the positioning block (196) is provided with an axial hole, and a rotating shaft bolt is inserted into the axial hole.

4. The punching die for automobile door parts according to claim 3, characterized in that: The upper end surface of the die insert (15) is flush with the die (7), and the upper end surface of the die insert (15) is in contact with the bottom surface of the positioning base plate (191).

5. The punching die for automobile door parts according to claim 4, characterized in that: The front end of the pressing block (20) has two extrusion heads (201) protruding forward, the positioning base plate (191) is in an isosceles trapezoidal shape, and two protruding stop heads (197) are provided on both sides of the positioning base plate (191).

6. The punching die for automobile door parts according to claim 5, characterized in that: The two extrusion heads (201) are arranged one in front of the other, and the front ends of the extrusion heads (201) have extrusion surfaces. The extrusion surfaces of the two extrusion heads (201) are located on the same plane. The two stop heads (197) are arranged one in front of the other, and the front ends of the stop heads (197) have abutment surfaces. The abutment surfaces of the two stop heads (197) are located on the same plane. The extrusion surfaces of the extrusion heads (201) and the abutment surfaces of the stop heads (197) are parallel to each other.

7. The punching die for automobile door parts according to claim 1, characterized in that: The pressing fixing plate (6) is provided with an embedding hole, and the pressing plate (5) is embedded in the embedding hole and fixed by bolts.

8. The punching die for automobile door parts according to claim 7, characterized in that: A raised extrusion column head (51) is fixed on the pressing plate (5), a vertical sliding hole (71) is opened on the die (7), a limiting bolt (72) that passes through the die pad (8) is slidably provided on the lower die seat (9), a rebound block (73) is provided in the vertical sliding hole (71), the rebound block (73) is fixed to the upper end of the limiting bolt (72), an upward push spring (74) is sleeved on the limiting bolt (72), the lower end of the upward push spring (74) abuts on the lower die seat (9), and the upper end of the upward push spring (74) abuts on the lower end surface of the rebound block (73), and when the extrusion column head (51) moves downward, it can be inserted into the vertical sliding hole (71) and push the rebound block (73) to move downward.

9. The punching die for automobile door parts according to claim 8, characterized in that: The pressing plate (5) is provided with a pressing groove (52). When the pressing plate (5) is lowered, the bottom wall of the pressing groove (52) can abut against the upper surface of the automobile door member (21).

10. The punching die for automobile door parts according to claim 9, characterized in that: The die (7) is provided with a plurality of limiting strips (75), and the limiting strips (75) are located on both sides of the die insert (15).

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