Bending and punching die

Abstract

The utility model relates to the technical field of bending and punching dies, in particular to a bending and punching die which comprises an upper die and a lower die, a hydraulic rod used for driving the upper die to press downwards is arranged at the top end of the upper die, and a cutting portion is arranged at the bottom of the upper die. The lower die is fixed on the base; grooves are symmetrically formed in the bottom of the upper die, rotatable bending cylinders are arranged in the grooves, curved surfaces of the bending cylinders are recessed inwards to form folded angles, a fixed rod is arranged on the front face of the upper die, a movable rod is arranged on the front face of each bending cylinder, and the fixed rod and the movable rod are connected through a spring. The bending device has the advantages that the hydraulic rod is used for driving the upper die to press downwards, meanwhile, the rotating function of the bending cylinder is achieved, then the bending effect on materials is achieved through rotation of the bending cylinder, compared with traditional extrusion bending, friction to the materials is reduced, the size and the folding effect are guaranteed, and meanwhile the bending efficiency is improved. And the problem of product scratch is perfectly solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending and punching dies, in particular to a bending and punching die. Background Art

[0002] When welding steel pipe tower ladders, a U-shaped plate is required as a connector. This U-shaped plate has a through hole at the center of its bottom. To process this U-shaped plate, a cut rectangular steel plate must be bent into a U-shaped plate, then placed in a dedicated positioning slot and punched. This process is cumbersome, and existing bending and punching equipment typically uses extrusion bending. While this improves work efficiency, it can also easily scratch the surface of the material, resulting in a rough workpiece surface.

[0003] In order to address the above problems, a bending and punching die is urgently needed. Utility Model Content

[0004] The purpose of the present utility model is to provide a bending and punching die to solve the problems raised in the above background technology.

[0005] To achieve the above purpose, a bending and punching die is provided, comprising an upper die and a lower die, wherein a hydraulic rod for driving the upper die downward is provided at the top of the upper die, a cutting portion is provided at the bottom of the upper die, and a waste hole is provided at the top of the lower die;

[0006] A base, with baffles provided on both sides of the top of the base, and the lower mold fixed on the base;

[0007] The bottom of the upper mold is symmetrically provided with grooves, and a rotatable bending cylinder is provided in the groove. The curved surface of the bending cylinder is concave inward to form a folded angle. A fixed rod is provided on the front of the upper mold, and a movable rod is provided on the front of the bending cylinder. The fixed rod and the movable rod are connected by a spring, and the movable rod does not overlap with the axis of the bending cylinder.

[0008] Furthermore, the groove is an arc-shaped structure, and the corner forms a long side and a short side on the wall surface of the bending cylinder. The long side and the short side are perpendicular to each other, and the part where the short side is connected to the cylinder wall is an arc surface structure.

[0009] Furthermore, the axis of the bending cylinder is fixedly mounted on the front side of the upper mold through a fixing bracket.

[0010] Furthermore, a through hole communicating with the waste hole is provided on the base, and the waste hole is located directly below the cutting portion.

[0011] Furthermore, the bottom of the upper mold is a concave structure, and the cutting part is fixedly installed in the middle concave area, and the concave depth is equal to the radius length of the bending cylinder.

[0012] Furthermore, when the upper mold is fully pressed downward, the short side is parallel to the top of the lower mold, and the long side is parallel to the side wall of the lower mold.

[0013] Furthermore, there are two bending cylinders, the two bending cylinders rotate in opposite directions, and the maximum rotatable angle is 90 degrees.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The hydraulic rod is used to drive the upper mold to press down while realizing the rotation function of the bending cylinder. Then the rotation of the bending cylinder is used to realize the bending effect of the material. Compared with the traditional extrusion bending, it reduces the friction on the material, while ensuring the size and folding effect, it reduces the problem of product scratches. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the working state of the utility model;

[0018] Figure 3 For this utility model Figure 1 The main view in

[0019] Figure 4 For this utility model Figure 2 The main view in .

[0020] The meaning of each number in the figure is:

[0021] Upper mold; 2. Lower mold; 3. Hydraulic rod; 4. Cutting part; 5. Waste hole; 6. Base; 7. Baffle; 8. Groove; 9. Bending cylinder; 10. Folding angle; 11. Fixed rod; 12. Movable rod; 13. Spring; 14. Fixed bracket. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Those skilled in the art will understand that, unless otherwise stated, the singular forms "a," "an," and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0024] See also Figures 1-4 As shown, a bending and punching die is provided, comprising an upper die 1 and a lower die 2. A hydraulic rod 3 for driving the upper die 1 downward is provided at the top of the upper die 1. A cutting portion 4 is provided at the bottom of the upper die 1. A waste hole 5 is provided at the top of the lower die 2. A through hole communicating with the waste hole 5 is provided on the base 6. The waste hole 5 is located directly below the cutting portion 4. When the upper die 1 is pressed downward, the cutting portion 4 is aligned with the waste hole 5 and cuts down to achieve the punching function. The cut waste is discharged from the waste hole 5.

[0025] A base 6, with baffles 7 provided on both sides of the top of the base 6, and the lower mold 2 is fixed on the base 6;

[0026] A groove 8 is symmetrically provided at the bottom of the upper mold 1, and a rotatable bending cylinder 9 is provided in the groove 8. The curved surface of the bending cylinder 9 is concave inward to form a folding angle 10. It should be noted that when the bending cylinder 9 contacts the material, the bending cylinder 9 will rotate due to the force on one side. At this time, the folding angle 10 can realize the folding of the material. A fixed rod 11 is provided on the front of the upper mold 1, and a movable rod 12 is provided on the front of the bending cylinder 9. The fixed rod 11 and the movable rod 12 are connected by a spring 13, and the movable rod 12 does not overlap with the axis of the bending cylinder 9.

[0027] Please refer to Figure 1-Figure 2 As shown:

[0028] The groove 8 is an arc-shaped structure, and the corner 10 forms a long side and a short side on the wall surface of the bending cylinder 9. The long side and the short side are perpendicular to each other, and the part where the short side is connected to the wall of the cylinder is an arc surface structure; Figure 2 As shown, when the upper mold 1 is fully pressed down, the short side is parallel to the top of the lower mold 2, and the long side is parallel to the side wall of the lower mold 2, wherein the long side bends the two ends of the material downward;

[0029] In order to fix the bending cylinder 9, the axis of the bending cylinder 9 is fixedly installed on the front of the upper mold 1 through a fixing bracket 14. The back of the upper mold 1 is also provided with a fixing bracket 14 connected to the axis of the bending cylinder 9;

[0030] The bottom of the upper mold 1 is a concave structure, and the cutting part 4 is fixedly installed in the middle concave area, and the depth of the concave is equal to the radius of the bending cylinder 9;

[0031] There are two bending cylinders 9 , and the two bending cylinders 9 rotate in opposite directions, with a maximum rotation angle of 90 degrees.

[0032] Working process:

[0033] like Figure 1 As shown, the material is placed on the surface of the lower die 2, and then the hydraulic rod 3 is activated and presses the upper die 1 downward. During the downward pressing process, the short side of the bending cylinder 9 is subjected to force, causing the bending cylinder 9 to flip over. During the flipping process of the bending cylinder 9, the spring 13 will be stretched, and at the same time, the long side bends the two ends of the material downward; at the same time, the cutting part 4 is aligned with the waste hole 5 and cuts down to achieve the punching effect, and the waste is discharged from the waste hole 5;

[0034] Then the hydraulic rod 3 drives the upper mold 1 to return to its initial position, and the pushing mechanism, which can be understood here as a push rod, belongs to the existing conventional design and is not recorded in this application. The pushing mechanism pushes out the completed workpiece; at the same time, the spring 13 restores its deformation, causing the bending cylinder 9 to return to its original position.

[0035] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A bending and punching die, comprising an upper die (1) and a lower die (2), characterized in that: A hydraulic rod (3) is provided at the top of the upper mold (1) for driving the upper mold (1) downward, a cutting portion (4) is provided at the bottom of the upper mold (1), and a waste hole (5) is provided at the top of the lower mold (2); A base (6), baffles (7) are provided on both sides of the top of the base (6), and the lower mold (2) is fixed on the base (6); The bottom of the upper mold (1) is symmetrically provided with a groove (8), a rotatable bending cylinder (9) is provided in the groove (8), the curved surface of the bending cylinder (9) is recessed inwards and forms a folding angle (10), a fixed rod (11) is provided on the front of the upper mold (1), a movable rod (12) is provided on the front of the bending cylinder (9), the fixed rod (11) and the movable rod (12) are connected by a spring (13), the movable rod (12) does not overlap with the axis of the bending cylinder (9), the groove (8) is an arc structure, the folding angle (10) forms a long side and a short side on the wall surface of the bending cylinder (9), the long side and the short side are perpendicular to each other, and the part where the short side is connected to the wall of the cylinder is an arc surface structure; The bottom of the upper mold (1) is a concave structure, and the cutting portion (4) is fixedly installed in the middle concave area, and the concave depth is equal to the radius length of the bending cylinder (9).

2. The bending and punching die according to claim 1, characterized in that: The axis of the bending cylinder (9) is fixedly mounted on the front side of the upper mold (1) via a fixing bracket (14).

3. The bending and punching die according to claim 1, characterized in that: The base (6) is provided with a through hole communicating with the waste hole (5), and the waste hole (5) is located directly below the cutting portion (4).

4. The bending and punching die according to claim 1, characterized in that: When the upper mold (1) is fully pressed downward, the short side is parallel to the top of the lower mold (2), and the long side is parallel to the side wall of the lower mold (2).

5. The bending and punching die according to claim 1, characterized in that: There are two bending cylinders (9), and the two bending cylinders (9) rotate in opposite directions, with a maximum rotation angle of 90 degrees.

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