Sheet metal part stamping and bending tooling

Abstract

The utility model relates to metal piece processing technical field discloses a sheet metal part stamping and bending frock, including up and down movement's upper die and fixed lower die, the center of lower die sets up sheet metal part placing groove, the center line both sides of lower die symmetrical arrangement set up a pair of clamping claw and a pair of setting are pressed in the clamping claw top push roller, the clamping claw is used for clamping the part to be processed, the push roller is used for pushing and pressing the bending part of sheet metal part, the clamping claw and push roller reset through first spring, second spring, the upper die is provided with the first push plate of radian design, second push plate, third push plate and fourth push plate to punch the sheet metal part. This frock can realize the stamping and bending demand of complex sheet metal part, especially automobile engine front support.

Description

Technical Field

[0001] This utility model relates to the field of metal parts processing technology, and more specifically, to a sheet metal parts stamping and bending fixture. Background Technology

[0002] Metal sheet metal parts need to be processed into the required shape during use. For example Figures 1-3 The front-mounted engine bracket shown consists of three main bodies: main body one, main body two, and main body three. During use, the two upper side walls of main body one need to be bent and pressed onto the top of main body two to achieve the connection and fixation of main body one, main body two, and main body three.

[0003] For existing metal part stamping and bending fixtures, such as the utility model patent with authorization announcement number CN222001358U, a metal part stamping and bending fixture is disclosed. This fixture includes a base, a pedestal on the base, and a liftable carrier plate above the pedestal. Connecting columns are inserted downwards at the four corners of the carrier plate, and pressure plates are provided at the bottom of the connecting columns. From front to back, the carrier plate has a pair of punching heads, a pair of bending blocks, and a stamping mechanism. The stamping mechanism includes a stamping column and a pair of bending columns mounted on the carrier plate. The stamping column is located between the two bending columns, and its length is shorter than the bending columns. The pressure plates have matching slots corresponding to the punching heads, bending blocks, bending columns, and stamping columns. This fixture can only perform end-bending stamping operations on simple-shaped, flat metal parts, and is difficult to complete for stamping complex-structured metal parts. Utility Model Content

[0004] The technical problem to be solved by this utility model is that existing metal stamping and bending fixtures are unable to process metal parts with complex structures such as the front bracket of an automobile engine. In order to overcome the above-mentioned defects of the prior art, this utility model provides a sheet metal stamping and bending fixture.

[0005] A sheet metal stamping and bending fixture includes an upper die that can move up and down and a fixed lower die. The lower die has a sheet metal placement groove at its center. A pair of clamping claws and a pair of push rollers arranged symmetrically on both sides of the center line of the lower die are provided. The clamping claws are used to clamp the parts to be processed, and the push rollers are used to push and bend the sheet metal parts to be bent.

[0006] Both ends of a pair of gripping claws facing away from each other are horizontally connected to one end of a first spring, and the other end of the first spring is connected to a support seat on the lower die for the gripping claws to be pushed out and reset; both ends of a pair of push rollers facing away from each other are fixed with one end of a second spring along the stroke direction of the push rollers, and the other end of the second spring is fixed to a support seat on the lower die for the push rollers to be pushed out and reset.

[0007] The lower surface of the upper mold is provided with a first push plate and a second push plate that can be inserted into the support base to push the clamping claw to move, as well as a third push plate and a fourth push plate to push the pressure roller to move. The first push plate, the second push plate, the third push plate and the fourth push plate are arranged in an arc on the side facing the clamping claw and the pressure roller, and the arc meets the movement stroke requirements of pushing the clamping claw and the pressure roller.

[0008] In one possible implementation, the first push plate and the second push plate are arranged in a mirror symmetry along the center line of the lower mold, and the third push plate and the fourth push plate are arranged in a mirror symmetry along the center line of the lower mold.

[0009] In one possible implementation, the lower surface of the lower mold is further provided with a fifth push plate and a sixth push plate. The fifth push plate has the same shape as the first push plate and is located on both sides of the third push plate. The sixth push plate has the same shape as the second push plate and is located on both sides of the fourth push plate.

[0010] In one possible implementation, a movable plate is fixed to the lower surface of the upper mold via an electric telescopic cylinder. A lower pressure plate is fixed at the center of the movable plate. A lower pressure plate and a lower pressure plate are movably arranged on both sides of the lower pressure plate. The lower pressure plates are mirror-symmetrically arranged with the lower pressure plate as the plane of symmetry.

[0011] In one possible implementation, a pair of support seats are symmetrically arranged on the lower mold with the center line as the line of symmetry. The side walls of the support seats are provided with strip-shaped holes. Connecting rods are fixed on both sides of the pair of clamping claws. The connecting rods are arranged through the strip-shaped holes, and the part of the connecting rods that extends out of the strip-shaped holes is fitted with roller one. A pair of push rollers are symmetrically fixed in the pair of support seats, and roller two is fixed at the opposite ends of the pair of push rollers.

[0012] In one possible implementation, each push roller includes a fixed base, a first roller is mounted on a first end of the fixed base, a receiving space is recessed at a second end of the fixed base, a first push rod is fixed at the bottom of the receiving space, a second push rod is fixed at the end of the first push rod away from the first roller, a movable block is fixed at the end of the second push rod away from the first roller, the end of the movable block that fixes the second push rod is limited within the receiving space and can slide left and right along the receiving space, a second roller is fixed at the end of the movable block away from the second push rod; the fixed base is fixed to a support base by bolts and a second spring is fixed to the side of the fixed base.

[0013] In one possible implementation, a limit switch responsive to the movement of the upper mold is fixed on the support base.

[0014] In one possible implementation, a placement plate is provided on the lower mold, the center of the placement plate is recessed to form the placement groove, the placement plate is fixed to the bottom plate of the lower mold by a third spring, the bottom plate of the lower mold is also provided with a manual wrench for easy prying up of the placement plate, and a guide post is also fixed on the placement plate.

[0015] In one possible implementation, a positioning plate for positioning the sheet metal base is fixed on one side of the placement plate and the placement slot.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model, through the arc design of the first push plate, the second push plate, the third push plate and the fourth push plate, enables the first push plate and the second push plate to drive the clamping claw to grip the sheet metal part to be processed when inserted into the support base. At the same time as gripping, due to the presence of the first roller, the metal sheet of the main body of the sheet metal part, which was originally bent, is straightened (the metal sheet changes from horizontal bending to vertical setting). Then, as the third push plate and the fourth push plate continue to be inserted into the support base, they push the pressure roller to bend the metal sheet of the main body of the sheet metal part towards each other and fix it to the upper end of the second body of the sheet metal part, so that the first body and the second body of the sheet metal part form a whole.

[0018] 2. During the continuous pushing process of the first, second, third, and fourth push plates, the lower pressure plate one on the upper mold first presses the main body two into the main body three. At the same time, the roller one straightens the metal sheet of the main body one of the sheet metal part, which was originally bent. Then, as the upper mold continues to move down, the push roller has bent the metal sheet of the main body one of the sheet metal part towards each other and fixed it to the upper end of the main body two of the sheet metal part. The lower pressure plate two and the lower pressure plate three come into contact with the bent metal sheet and make the bent part of the metal sheet fit tightly with the upper end of the main body two of the sheet metal part.

[0019] 3. The sheet metal stamping and bending fixture of this utility model can meet the stamping and bending requirements of complex sheet metal parts, especially the front-mounted bracket of automobile engine. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the upper part of the main body of the front-mounted engine mount, before it is bent. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the upper part of the main body of the front-mounted engine mount, before it is bent. Figure 2 ;

[0022] Figure 3 A schematic diagram of the structure where the upper end of the main body of the front-mounted bracket of an automobile engine is bent and pressed onto the main body of the second body;

[0023] Figure 4This is a schematic diagram of the overall structure of the sheet metal stamping and bending tooling of this utility model. The diagram shows the upper die at its lowest position.

[0024] Figure 5 This is a schematic diagram of the overall structure of the lower die of the sheet metal stamping and bending tool of this utility model;

[0025] Figure 6 This is an exploded view of the lower die of the sheet metal stamping and bending fixture of this utility model.

[0026] Figure 7 for Figure 6 Enlarged view of point A in the image;

[0027] Figure 8 This is a schematic diagram of the upper die of the sheet metal stamping and bending fixture of this utility model being pressed down to its lowest position.

[0028] Figure 9 This is an exploded view of the upper die of the sheet metal stamping and bending fixture of this utility model when it is pressed down to its lowest position.

[0029] Figure 10 This is a structural diagram of the upper die of the sheet metal stamping and bending fixture of this utility model in the state before it starts to move.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Main body one; 2. Main body two; 3. Main body three; 4. Upper mold; 5. Lower mold; 6. Placement plate; 7. Positioning plate; 8. Manual wrench; 9. Third spring; 10. Support base; 11. Placement slot; 12. Forming switch; 13. Column; 14. Clamping claw; 15. Roller one; 16. First spring; 17. Fixed base; 18. First push rod; 19. Second push rod; 20. Movable block; 21. Roller one; 22. Roller two; 23. Second spring; 24. Electric telescopic cylinder; 25. Movable plate; 26. Lower pressure plate one; 27. Lower pressure plate two; 28. Lower pressure plate three; 29. ​​First push plate; 30. Second push plate; 31. Third push plate; 32. Fourth push plate; 33. Fifth push plate; 34. Sixth push plate; 35. Connecting rod; 36. Strip hole. Detailed Implementation

[0032] In the description of this utility model, it should be noted that the terms "left", "right", "inner", "outer", "front", "rear", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] As described in the background section, the sheet metal stamping and bending fixture disclosed in this embodiment is particularly suitable for the stamping and bending operation of the front-mounted bracket of an automobile engine.

[0034] See Figures 1-10 The tooling in this embodiment includes an upper mold 4 that can move up and down and a fixed lower mold 5. A pair of clamping claws 14 and a pair of push rollers arranged symmetrically on both sides of the center line of the lower mold 5 are used to clamp the parts to be processed, and the push rollers are used to push and bend the sheet metal parts to be bent.

[0035] See the figure for details. Figures 4-7 Each pair of gripping claws 14 has one end of a first spring 16 horizontally connected to both opposite ends of the pair of gripping claws 14. The other end of the first spring 16 is connected to a support seat 10 on the lower mold 5 for the gripping claws 14 to be pushed out and reset. The sides of the two opposite ends of the pair of push rollers have one end of a second spring 23 fixed along the push roller stroke direction. The other end of the second spring 23 is fixed to a support seat 10 on the lower mold 5 for the push rollers to be pushed out and reset.

[0036] See also Figures 4-7 A pair of support seats 10 are symmetrically arranged on the lower mold 5 with the center line as the axis of symmetry. The side wall of the support seat 10 is provided with a strip hole 36. A connecting rod 35 is fixed on both sides of a pair of clamping claws 14. The connecting rod 35 passes through the strip hole 36 and the part of the connecting rod 35 that extends out of the strip hole 36 is fitted with a roller 21. A pair of push rollers are symmetrically fixed in the pair of support seats 10, and a roller 22 is fixed at the opposite end of the pair of push rollers.

[0037] See Figure 6 and Figure 7 Each push roller includes a fixed seat 17. A roller 15 is installed at the first end of the fixed seat 17. A receiving space is recessed at the second end of the fixed seat 17. A first push rod 18 is fixed at the bottom of the receiving space. A second push rod 19 is fixed at the end of the first push rod 18 away from the roller 15. A movable block 20 is fixed at the end of the movable block 20 away from the roller 15. The end of the movable block 20 that fixes the second push rod 19 is limited within the receiving space and can slide left and right along the receiving space. A roller 22 is fixed at the end of the movable block 20 away from the second push rod 19. The fixed seat 17 is fixed to the support seat 10 by bolts, and one end of a second spring 23 is fixed to the side of the fixed seat 17.

[0038] See Figures 8-10The lower surface of the upper mold 4 is provided with a first push plate 29 and a second push plate 30 that can be inserted into the support base 10 to push the clamping claw 14 to move, and a third push plate 31 and a fourth push plate 32 that push the pressure roller to move. The first push plate 29, the second push plate 30, the third push plate 31 and the fourth push plate 32 are arranged in an arc shape facing the clamping claw 14 and the pressure roller, and the arc shape meets the movement stroke requirements of pushing the clamping claw 14 and the pressure roller. Preferably, the first push plate 29 and the second push plate 30 are arranged in a mirror symmetrical arrangement along the center line of the lower mold 5, and the third push plate 31 and the fourth push plate 32 are arranged in a mirror symmetrical arrangement along the center line of the lower mold 5. At the same time, the lower surface of the lower mold 5 is also provided with a fifth push plate 33 and a sixth push plate 34. The fifth push plate 33 has the same shape as the first push plate 29 and is located on both sides of the third push plate 31, and the sixth push plate 34 has the same shape as the second push plate 30 and is located on both sides of the fourth push plate 32.

[0039] In order to press the main body 2 of the front-mounted engine bracket into the main body 3, a movable plate 25 is fixed to the lower surface of the upper mold 4 via an electric telescopic cylinder 24. A lower pressure plate 26 is fixed at the center of the movable plate 25. Lower pressure plates 27 and 3 are movably arranged on both sides of the lower pressure plate 26, respectively. The lower pressure plates 27 and 3 are mirror-symmetrically arranged with the lower pressure plate 26 as the plane of symmetry. See also... Figure 5 A limit switch that responds to the movement of the upper mold 4 is fixed on the support base 10.

[0040] For details, see Figure 6 The lower mold 5 has a sheet metal part placement groove 11 at its center, and a positioning plate 7 for positioning the sheet metal part base is fixed to one side of the placement groove 11. Furthermore, a placement plate 6 is provided on the lower mold 5, with a recessed center forming the placement groove 11. The placement plate 6 is fixed to the bottom plate of the lower mold 5 by a third spring 9. A manual wrench 8 for easily prying up the placement plate 6 is also provided on the bottom plate of the lower mold 5, and a guide post is fixed to the placement plate 6. When the manual wrench 8 pries up the placement plate 6, the placement plate 6 moves upward under the guidance of the guide post. A column 13 can also be provided on the placement plate 6, which is used to lift the main body of the front engine mount, raising the front engine mount from the placement groove 11.

[0041] The working process of the tooling in this embodiment is as follows: First, the main body 3 of the front-mounted bracket of the automobile engine is placed into the placement slot 11. Then, the main body 1 and the main body 2 are placed on top of the main body 3. Then, the limit switch is activated, so that the upper mold 4 moves slowly downward. The lower pressure plate 26 on the upper mold 4 first presses the main body 2 into the main body 3. At the same time, the roller 15 straightens the metal sheet of the main body 1 of the sheet metal part, which was originally bent. Because of the arc design of the first push plate 29, the second push plate 30, the third push plate 31, the fourth push plate 32, the fifth push plate 33 and the sixth push plate 34 firstly squeeze the roller 21 when the first push plate 29, the second push plate 30, the fifth push plate 33 and the sixth push plate 34 are inserted into the support seat 10, thereby pushing the clamping claw 14 towards the middle and driving the clamping claw 14 to fix the sheet metal part to be processed. While the clamping claw 14 fixes the sheet metal part, the presence of roller 15 straightens the originally bent metal sheet of the main body of the sheet metal part (the metal sheet changes from being horizontally bent to being vertically set). Then, as the third push plate 31 and the fourth push plate 32 continue to be inserted into the support base 10, the third push plate 31 and the fourth push plate 32 squeeze the roller 22, pushing the pressure roller towards the center. The pushing pressure roller bends the metal sheet of the main body of the sheet metal part 1 towards each other and fixes it to the upper end of the main body of the sheet metal part 2, so that the main body of the sheet metal part 1 and the main body of the sheet metal part 2 form a whole. During the continuous pushing of the third push plate 31 and the fourth push plate 32, as the upper mold 4 continues to move downwards, the pressure rollers have bent the metal sheet of the sheet metal body 1 towards each other and fixed it to the upper end of the sheet metal body 2. Due to the concave design of the middle of the third push plate 31 and the fourth push plate 32, the pressure rollers are reset under the action of the second spring 23 when the upper mold 4 continues to move downwards. At this time, the lower pressure plate 27 and the lower pressure plate 38 can just contact the bent metal sheet, making the bent part of the metal sheet fit tightly against the upper end of the sheet metal body 2. Then the limit switch is triggered, the upper mold 4 begins to move upwards, and we can operate the manual wrench 8 to take out the processed sheet metal and place it in the slot 11.

[0042] The above explanation uses the front-mounted bracket of an automobile engine as an example of sheet metal parts. However, when the sheet metal parts are other components, the requirements for stamping and bending can also be met by reasonably designing the curvature of the first push plate 29, the second push plate 30, the third push plate 31, the fourth push plate 32, the fifth push plate 33 and the sixth push plate 34.

[0043] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A sheet metal stamping and bending fixture, comprising an upper die (4) movable up and down and a fixed lower die (5), characterized in that, The lower mold (5) is provided with a sheet metal placement groove (11) at its center. A pair of clamping claws (14) and a pair of push rollers are symmetrically arranged on both sides of the center line of the lower mold (5). The clamping claws (14) are used to clamp the parts to be processed, and the push rollers are used to push and bend the sheet metal parts to be bent. A pair of gripping claws (14) are horizontally connected to one end of a first spring (16) at both ends opposite to each other. The other end of the first spring (16) is connected to a support seat (10) on the lower die (5) for the push-out reset of the gripping claws (14). A pair of push rollers are fixed to one end of a second spring (23) along the push roller stroke direction on both sides opposite to each other. The other end of the second spring (23) is fixed to a support seat (10) on the lower die (5) for the push roller push-out reset. The lower surface of the upper mold (4) is provided with a first push plate (29) and a second push plate (30) that can be inserted into the support base (10) to push the clamping claw (14) to move, as well as a third push plate (31) and a fourth push plate (32) for pushing the pressure roller to move. The first push plate (29), the second push plate (30), the third push plate (31) and the fourth push plate (32) are arranged in an arc on the side facing the clamping claw (14) and the pressure roller, and the arc meets the movement stroke requirements of pushing the clamping claw (14) and the pressure roller.

2. The sheet metal stamping and bending fixture according to claim 1, characterized in that, The first push plate (29) and the second push plate (30) are arranged in a mirror symmetry along the center line of the lower mold (5), and the third push plate (31) and the fourth push plate (32) are arranged in a mirror symmetry along the center line of the lower mold (5).

3. The sheet metal stamping and bending fixture according to claim 2, characterized in that, The lower surface of the lower mold (5) is also provided with a fifth push plate (33) and a sixth push plate (34). The fifth push plate (33) has the same shape as the first push plate (29) and is located on both sides of the third push plate (31). The sixth push plate (34) has the same shape as the second push plate (30) and is located on both sides of the fourth push plate (32).

4. The sheet metal stamping and bending fixture according to claim 1, characterized in that, The lower surface of the upper mold (4) is fixed with a movable plate (25) by an electric telescopic cylinder (24). A lower pressure plate (26) is fixed at the center of the movable plate (25). A lower pressure plate (27) and a lower pressure plate (28) are movably arranged on both sides of the lower pressure plate (26). The lower pressure plate (27) and the lower pressure plate (28) are mirror-symmetrically arranged with the lower pressure plate (26) as the symmetrical plane.

5. The sheet metal stamping and bending fixture according to claim 1, characterized in that, The lower mold (5) is symmetrically arranged with the center line as the axis of symmetry. A strip hole (36) is opened on the side wall of the support (10). A connecting rod (35) is fixed on both sides of a pair of clamping claws (14). The connecting rod (35) passes through the strip hole (36) and the part of the connecting rod (35) that extends out of the strip hole (36) is fitted with a roller (21). A pair of push rollers are symmetrically fixed in a pair of support (10), and a roller (22) is fixed at the opposite end of the pair of push rollers.

6. A sheet metal stamping and bending fixture according to claim 5, characterized in that, Each push roller includes a fixed seat (17), a roller (15) is installed at the first end of the fixed seat (17), and a receiving space is recessed at the second end of the fixed seat (17). A first push rod (18) is fixed at the bottom of the receiving space. A second push rod (19) is fixed at the end of the first push rod (18) away from the roller (15). A movable block (20) is fixed at the end of the second push rod (19) away from the roller (15). The end of the movable block (20) that fixes the second push rod (19) is limited within the receiving space and can slide left and right along the receiving space. A roller (22) is fixed at the end of the movable block (20) away from the second push rod (19). The fixed seat (17) is fixed to the support seat (10) by bolts, and a second spring (23) is fixed on the side of the fixed seat (17).

7. The sheet metal stamping and bending fixture according to claim 1, characterized in that, A limit switch that responds to the movement of the upper mold (4) is fixed on the support base (10).

8. A sheet metal stamping and bending fixture according to claim 1, characterized in that, A placement plate (6) is provided on the lower mold (5). The center of the placement plate (6) is recessed to form the placement groove (11). The placement plate (6) is fixed to the bottom plate of the lower mold (5) by a third spring (9). A manual wrench (8) is also provided on the bottom plate of the lower mold (5) to facilitate prying up the placement plate (6). A guide post is also fixed on the placement plate (6).

9. A sheet metal stamping and bending fixture according to claim 8, characterized in that, A positioning plate (7) for positioning sheet metal parts is fixed on one side of the placement plate (6) and the placement groove (11).

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