Friction-free stamping bending structure and bending die

Abstract

The friction-free stamping and bending structure comprises a stamping part and a bearing part, the stamping part comprises a pressing base, a die base, a material pressing plate and a pair of pressing dies, the die base is arranged at the bottom of the pressing base, an opening is formed in the bottom of the die base, limiting plates are arranged on the two sides of the opening, the material pressing plate and the pressing dies are both arranged in the die base, and the bearing part is arranged in the die base. The pair of pressing dies is symmetrically arranged on the two sides of the material pressing plate and clamped between the die holder and the limiting plate, and gaps are reserved between the pressing dies and the die holder. The bearing part comprises a supporting base and a male die, the supporting base is arranged at the bottom of the pressing base, the male die is arranged on the supporting base and right faces the material pressing plate, and driving blocks are symmetrically arranged on the two sides of the male die. The gap is reserved between the pressing die and the die holder, so that the pressing die can swing in the die holder, friction between the die and a product is reduced due to the swing gap in the bending process, and the appearance surface of the product is kept bright and traceless; and secondly, the bending angle can be quickly and flexibly adjusted by adjusting the position of the driving block.

Description

A frictionless stamping and bending structure and bending die Technical Field

[0001] This utility model relates to the field of stamping and bending technology, and in particular to a frictionless stamping and bending structure and bending die. Background Technology

[0002] Stamping and bending is a common plastic forming process in the metal processing field. It involves applying pressure to a metal sheet using stamping equipment to cause it to undergo plastic deformation, thereby obtaining parts with specific angles, shapes, and sizes.

[0003] During the production of the hanging rack, the sheet material needs to be bent 90 degrees using a bending die. In existing technology, the bending structure requires two bending processes to ensure stability during the 90-degree bend. Furthermore, since the product length is between 500mm and 800mm, and the bending blade length is also between 500mm and 800mm, when the bending blade length exceeds 500mm, rollers cannot be used to mitigate the friction caused by bending. Therefore, die marks and scratches caused by friction between the bending blade and the product cannot be avoided. Summary of the Invention

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the hanging bracket will cause mold marks and scratches on the surface of the product during the stamping process in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a frictionless stamping and bending structure, comprising:

[0006] The stamping part includes a pressure seat, a die seat, a pressure plate and a pair of dies. The die seat is disposed at the bottom of the pressure seat and has an opening at the bottom. Limiting plates are provided on both sides of the opening. The pressure plate and the dies are both disposed inside the die seat. The pair of dies are symmetrically disposed on both sides of the pressure plate. The dies are suspended between the die seat and the limiting plates, and a gap is left between the dies and the die seat.

[0007] The bearing part includes a support base and a punch. The support base is disposed at the bottom of the pressure base, and the punch is disposed on the support base and directly opposite the pressure plate. Drive blocks are symmetrically disposed on both sides of the punch.

[0008] In one embodiment of the present invention, the stamping part further includes an elastic element and a telescopic rod. The elastic element is disposed in the pressure base, one end of the telescopic rod is connected to the elastic element, and the other end of the telescopic rod passes through the mold base and is connected to the pressure plate.

[0009] In one embodiment of this utility model, a clamping platform is provided on the side of the mold away from the pressure plate, and the clamping platform cooperates with the limiting plate.

[0010] In one embodiment of the present invention, the driving block is provided with a first taper on the side near the punch, and the die is provided with a second taper on the side away from the pressure plate.

[0011] In one embodiment of this utility model, the punch has a third taper on both sides.

[0012] In one embodiment of this utility model, multiple drive blocks are arranged along the axial direction of the punch.

[0013] In one embodiment of this utility model, the drive block and the support base are detachably connected.

[0014] In one embodiment of this utility model, a limiting rod is provided at the top of the support base, and a limiting block corresponding to the position of the limiting rod is embedded at the bottom of the pressure base.

[0015] In one embodiment of this utility model, a guide rod is provided between the support base and the pressure base.

[0016] A bending die, comprising the aforementioned frictionless stamping and bending structure.

[0017] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0018] This invention discloses a frictionless stamping and bending structure and bending die. By leaving a gap between the die and the die base, the die can swing within the die base. During bending, due to the swing gap, the die is forced to open to both sides, reducing friction between the die and the product. This keeps the product's surface bright and flawless while also reducing frictional wear on the die. Furthermore, the bending angle can be quickly and flexibly adjusted by changing the position of the drive block. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 is a schematic diagram of the stamping section in Figure 1;

[0022] Figure 3 is a schematic diagram of the partial structure at point A in Figure 2;

[0023] Figure 4 is a structural schematic diagram of the load-bearing part in Figure 1;

[0024] Figure 5 is a cross-sectional view of the internal structure of this utility model;

[0025] Figure 6 is a schematic diagram of the local structure at point B in Figure 5;

[0026] Figure 7 is a partial structural schematic diagram of Figure 6;

[0027] Figure 8 is a schematic diagram of the punch in Figure 7;

[0028] Explanation of reference numerals in the accompanying drawings: 1. Stamping part; 2. Bearing part; 3. Guide rod; 11. Pressing seat; 12. Die base; 13. Pressure plate; 14. Die; 15. Limiting plate; 16. Elastic element; 17. Telescopic rod; 18. Limiting block; 19. Gap; 21. Support seat; 22. Punch; 23. Drive block; 24. Limiting rod; 121. Opening; 141. Clamping table; 142. Second taper; 221. Third taper; 231. First taper. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0030] Referring to Figures 1-8, this utility model discloses a frictionless stamping and bending structure, comprising:

[0031] The stamping part 1 includes a pressure base 11, a die base 12, a pressure plate 13, and a pair of dies 14. The die base 12 is disposed at the bottom of the pressure base 11. The bottom of the die base 12 is provided with an opening 121. Limiting plates 15 are provided on both sides of the opening 121. The pressure plate 13 and the dies 14 are both disposed inside the die base 12. The pair of dies 14 are symmetrically disposed on both sides of the pressure plate 13. The dies 14 are engaged between the die base 12 and the limiting plates 15, and a gap 19 is left between the dies 14 and the die base 12 and the pressure plate 13.

[0032] The bearing part 2 includes a support base 21 and a punch 22. The support base 21 is disposed at the bottom of the pressure base 11, and the punch 22 is disposed on the support base 21 and is positioned opposite the pressure plate 13. Drive blocks 23 are symmetrically disposed on both sides of the punch 22.

[0033] The bending structure of this utility model includes two parts: a stamping part 1 and a supporting part 2. The stamping part 1 is located on top of the supporting part 2. In the stamping part 1, a die base 12 is located at the bottom of a pressure base 11. Specifically, the pressure base 11 has an opening 121 on the side facing the support base 21. The die base 12 is used to install a pressure plate 13 and a die 14. The pressure plate 13 contacts the product surface, pressing the product firmly to prevent displacement during stamping. A pair of dies 14 are symmetrically arranged on both sides of the pressure plate 13 for stamping the product. A limiting plate 15 is located at the opening 121 of the pressure base 11 to fix the dies 14, allowing them to be locked inside the pressure base 11. Referring to Figure 7, a gap 19 is left between the die 14, the limiting plate 15, and the pressure base 11, allowing the die 14 to be adjusted up, down, left, and right inside the pressure base 11. Preferably, a 1mm gap 19 is left between the die 14 and the limiting plate 15.

[0034] The punch 22 in the bearing section 2 is installed directly below the pressure plate 13. During the actual stamping process, the sheet metal is placed on top of the punch 22, and the pressure seat 11 descends, causing the pressure plate 13 to press the sheet metal onto the punch 22. The dies 14 on both sides stamp the product. Since the dies 14 can move inside the pressure seat 11, during the bending process, the dies 14 on both sides will open to both sides (along the width direction of the punch 22) after being subjected to force, preventing the dies 14 from rubbing against the product surface and causing scratches. When the bending is about to be completed, the drive blocks 23 on both sides of the punch 22 drive the dies 14 to deflect inward, so that the bending angle of the product reaches the required value. The bending angle of the product can be adjusted by adjusting the position of the drive blocks 23. Preferably, the first taper 231 on the surface of the drive block 23 can guide the downward pressure of the die 14, ensuring the smoothness of the stamping by the die 14 and further reducing damage to the product surface.

[0035] This invention, by leaving a gap 19 between the die 14 and the die base 12, allows the die 14 to swing inside the die base 12. During bending, due to the swing gap 19, the die 14 is forced to open to both sides, reducing friction between the die and the product. This keeps the product's surface bright and flawless while also reducing frictional wear on the die 14. Furthermore, the bending angle can be quickly and flexibly adjusted by changing the position of the drive block 23.

[0036] Further, referring to FIG5, the stamping part 1 also includes an elastic element 16 and a telescopic rod 17. The elastic element 16 is disposed in the pressure base 11, one end of the telescopic rod 17 is connected to the elastic element 16, and the other end of the telescopic rod 17 passes through the mold base 12 and is connected to the pressure plate 13.

[0037] Specifically, one end of the elastic element 16 is fixedly connected to the pressure base 11, and the other end of the elastic element 16 is connected to the telescopic rod 17. Before stamping, the elastic element 16 is in its natural state, and the pressure plate 13 at the other end of the telescopic rod 17 extends out of the mold base 12. When the pressure base 11 presses down, the pressure plate 13 first contacts the sheet metal, and as it continues to press down, the elastic element 16 is compressed. Using the tension of the elastic element 16, the pressure plate 13 presses the sheet metal tightly. As the pressure increases, the pressure plate 13 retracts into the pressure base 11, and the dies 14 on both sides of the pressure plate 13 stamp the two sides of the sheet metal. After stamping is completed, the elastic element 16 returns to its initial state, causing the pressure plate 13 to extend out of the mold base 12.

[0038] Furthermore, a clamping platform 141 is provided on the side of the mold 14 away from the pressure plate 13, and the clamping platform 141 cooperates with the limiting plate 15.

[0039] Specifically, when the pressure seat 11 is pressed down, the pressure mold 14 falls under its own weight, causing the clamping platform 141 on one side of the pressure mold 14 to abut against the limiting plate 15, thus clamping the pressure mold 14 inside the pressure seat 11 and preventing the pressure mold 14 from detaching from the mold base 12.

[0040] Further, referring to FIG7, the driving block 23 is provided with a first taper 231 on the side near the punch 22, and the pressure die 14 is provided with a second taper 142 on the side away from the pressure plate 13.

[0041] Specifically, the first taper 231 on the surface of the drive block 23 guides the downward pressing of the die 14, making it easier for the die 14 to cut into the material, reducing resistance at initial contact, ensuring smooth bending, reducing frictional damage to the product surface, and ensuring the accuracy of the bending angle. Similarly, the surface of the die 14 is provided with a second taper 142 that cooperates with the first taper 231. During the pressing process, the first taper 231 and the second taper 142 fit together, gradually squeezing and bending the sheet material, avoiding damage to the die 14 due to rigid impact, and extending the service life of the die.

[0042] Furthermore, referring to Figure 8, the punch 22 has a third taper 221 on both sides.

[0043] Specifically, since the sheet metal will have a certain amount of springback during the bending process, a third taper 221 is provided on both sides of the punch 22 to compress the sheet metal at a larger angle during the bending process. After bending, the sheet metal springs back to the target angle. As a preferred embodiment of this utility model, the angle of the third taper 221 is a negative angle, and the cross-section of the entire punch 22 has an inverted cone structure that is wider at the top and narrower at the bottom.

[0044] Furthermore, multiple drive blocks 23 are arranged along the axial direction of the punch 22, and the multiple drive blocks 23 are equidistantly arranged.

[0045] Furthermore, the drive block 23 is detachably connected to the support base 21.

[0046] Specifically, during the actual bending process, the bending angle of the product can be adjusted by adjusting the distance between the drive block 23 and the punch 22; different drive blocks 23 can also be used to adjust the bending angle. The product is formed in a single stamping operation within a set angle, reducing the number of stamping operations.

[0047] Furthermore, a limiting rod 24 is provided on the top of the support base 21, and a limiting block 18 corresponding to the position of the limiting rod 24 is embedded in the bottom of the pressure base 11.

[0048] Specifically, during the stamping process, when the pressure seat 11 descends to the closed state, the limit rod 24 and the limit block 18 come into contact, limiting the lowest position of the die 14 and preventing the die from closing excessively due to excessive press stroke.

[0049] Furthermore, a guide rod 3 is provided between the support base 21 and the pressure base 11.

[0050] Specifically, the guide rod 3 guides the movement of the pressure seat 11, so that the pressure seat 11 moves vertically in a fixed direction, avoiding mold skewing caused by lateral force.

[0051] A bending die includes the frictionless stamping and bending structure described in the above embodiments.

[0052] In summary, this utility model introduces a frictionless stamping and bending structure and a bending die. By leaving a gap 19 between the die 14 and the die base 12, the die 14 can swing within the die base 12. During bending, due to the swing gap 19, the die 14 is forced to open to both sides, reducing friction between the die and the product. This keeps the product's surface bright and flawless while also reducing frictional wear on the die 14. Furthermore, the bending angle can be quickly and flexibly adjusted by changing the position of the drive block 23.

[0053] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A frictionless stamping and bending structure, characterized in that, include: The stamping part includes a pressure seat, a die seat, a pressure plate, and a pair of dies. The die seat is located at the bottom of the pressure seat and has an opening at the bottom. Limiting plates are provided on both sides of the opening. The pressure plate and the dies are both located inside the die seat. The pair of dies are symmetrically arranged on both sides of the pressure plate. The dies are engaged between the die seat and the limiting plates, and a gap is left between the dies and the die seat. The bearing part includes a support seat and a punch. The support seat is located at the bottom of the pressure seat, and the punch is located on the support seat and faces the pressure plate. Driving blocks are symmetrically arranged on both sides of the punch.

2. The frictionless stamping and bending structure according to claim 1, characterized in that: The stamping part also includes an elastic element and a telescopic rod. The elastic element is disposed in the pressure base, one end of the telescopic rod is connected to the elastic element, and the other end of the telescopic rod passes through the mold base and is connected to the pressure plate.

3. The frictionless stamping and bending structure according to claim 1, characterized in that: A clamping platform is provided on the side of the mold away from the pressure plate, and the clamping platform cooperates with the limiting plate.

4. The frictionless stamping and bending structure according to claim 1, characterized in that: The drive block has a first taper on the side closer to the punch, and the die has a second taper on the side farther from the pressure plate.

5. The frictionless stamping and bending structure according to claim 1, characterized in that: The punch has a third taper on both sides.

6. The frictionless stamping and bending structure according to claim 1, characterized in that: Multiple drive blocks are arranged along the axial direction of the punch.

7. The frictionless stamping and bending structure according to claim 1, characterized in that: The drive block and the support base are detachably connected.

8. The frictionless stamping and bending structure according to claim 1, characterized in that: A limiting rod is inserted through the top of the support base, and a limiting block corresponding to the position of the limiting rod is embedded in the bottom of the pressure base.

9. The frictionless stamping and bending structure according to claim 1, characterized in that: A guide rod is inserted between the support base and the pressure base.

10. A bending die, characterized in that, Includes the frictionless stamping and bending structure as described in any one of claims 1-9.

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