U-shaped stamping die structure without damaging surface of workpiece

Abstract

The utility model provides a U-shaped stamping die structure without damaging the surface of a workpiece, and relates to the field of U-shaped part machining. The U-shaped stamping die structure without damaging the surface of the workpiece comprises a lower die body, two lower die columns are fixedly connected to the upper surface of the lower die body, roller pins are arranged in the opposite angles of the two lower die columns, and a workpiece unloading cylinder is fixedly connected to the upper surface of the lower die body. According to the U-shaped stamping die structure without damaging the surface of the workpiece, a traditional U-shaped bending die structure is optimized, the roller pins are installed on the two sides of the bending edge of the lower die respectively, when an upper die moves downwards, a product makes contact with the lower die and begins to be bent, due to the sliding state of the roller pins, the contact face can move downwards along with the roller pins, and therefore the surface of the product cannot be scratched; the die solves the main defect that when an upper die moves downwards, the bending area of a product makes contact with a lower die and is stressed and deformed, the surface of the bending area is damaged, and therefore the qualification rate is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of U-shaped piece processing, in particular to a U-shaped stamping die structure without damaging the surface of a workpiece. Background Art

[0002] In the traditional stamping industry, narrow U-shaped bends are generally made in a rigid way. The main disadvantage of this mold is that when the upper mold moves downward, the bent area of ​​the product contacts the lower mold and deforms under force, which will damage the surface of the bent area, thereby affecting the pass rate. Utility Model Content

[0003] The utility model aims to provide a U-shaped stamping die structure without damaging the workpiece surface, which solves the problem that the main disadvantage of the die is that when the upper die moves downward, the bent area of ​​the product contacts the lower die and deforms under force, which damages the surface of the bent area, thereby affecting the qualified rate.

[0004] Technical Solution

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a U-shaped stamping die structure without damaging the workpiece surface, including a lower die body, the upper surface of the lower die body is fixedly connected to a lower die column, the number of the lower die columns is two, and the diagonals of the two lower die columns are built-in with needle rollers, the upper surface of the lower die body is fixedly connected to a discharge cylinder, the top of the discharge cylinder is fixedly connected to a supporting plate, the upper surface of the supporting plate is overlapped with a punch head, the top of the punch head is fixedly connected to an upper die body, the upper surface of the upper die body is fixedly connected to a hydraulic cylinder, and the lower surface of the upper die body is fixedly connected to a pressure plate via a telescopic cylinder.

[0006] Furthermore, a soft board is bonded to the lower surface of the pressing plate.

[0007] Furthermore, the left and right sides of the support plate are overlapped with the opposite sides of the two lower mold columns respectively.

[0008] The utility model provides a U-shaped stamping die structure without damaging the workpiece surface. It has the following beneficial effects:

[0009] The U-shaped stamping die structure does not damage the workpiece surface. This structure optimizes the traditional U-shaped bending die structure. A needle roller is installed on both sides of the bending edge of the lower die. When the upper die moves downward, the product contacts the lower die and starts to bend. Due to the sliding state of the needle roller, the contact surface will move downward with the needle roller, and the product surface will not be scratched. The main disadvantage of the die is that when the upper die moves downward, the bent area of ​​the product contacts the lower die and deforms under force, which will damage the surface of the bending area, thereby affecting the qualified rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1It is a schematic diagram of the structure of the utility model.

[0011] Among them, 1 is the lower die body, 2 is the unloading cylinder, 3 is the lower die column, 4 is the supporting plate, 5 is the punch head, 6 is the pressing plate, 7 is the upper die body, 8 is the hydraulic cylinder, 9 is the telescopic cylinder, and 10 is the needle roller. DETAILED DESCRIPTION

[0012] like Figure 1 As shown, an embodiment of the utility model provides a U-shaped stamping die structure without damaging the workpiece surface, including a lower die body 1, the upper surface of the lower die body 1 is fixedly connected with a lower die column 3, the number of the lower die columns 3 is two, and the diagonals of the two lower die columns 3 are built-in with roller needles 10, the upper surface of the lower die body 1 is fixedly connected with a discharge cylinder 2, the top of the discharge cylinder 2 is fixedly connected with a supporting plate 4, the left and right sides of the supporting plate 4 are respectively overlapped with the opposite sides of the two lower die columns 3, the upper surface of the supporting plate 4 is overlapped with a punch head 5, the top of the punch head 5 is fixedly connected with an upper die body 7, the upper surface of the upper die body 7 is fixedly connected with a hydraulic cylinder 8, the lower surface of the upper die body 7 is fixedly connected with a pressing plate 6 through a telescopic cylinder 9, and the lower surface of the pressing plate 6 is bonded with a soft board.

[0013] Working principle: Place the product on the surface of the two lower die seats 3, then start the hydraulic cylinder 8 to push downward. The hydraulic cylinder 8 will drive the punch head 5 to bend the product. During the bending process, the product surface contacts the two needle rollers 10, so that the two needle rollers 10 roll during the bending process. In addition, the telescopic cylinder 9 can also be driven to work. The telescopic cylinder 9 pushes the pressure plate 6 to position the product on the surface of the lower die column 3, making the product molding more perfect.

Claims

1. A U-shaped stamping die structure without damaging the workpiece surface, comprising a lower die body (1), characterized in that: The upper surface of the lower mold body (1) is fixedly connected to a lower mold column (3), the number of the lower mold columns (3) is two, and the diagonals of the two lower mold columns (3) are both built with roller needles (10). The upper surface of the lower mold body (1) is fixedly connected to a discharge cylinder (2), the top of the discharge cylinder (2) is fixedly connected to a support plate (4), the upper surface of the support plate (4) is overlapped with a punch head (5), the top of the punch head (5) is fixedly connected to an upper mold body (7), the upper surface of the upper mold body (7) is fixedly connected to a hydraulic cylinder (8), and the lower surface of the upper mold body (7) is fixedly connected to a pressure plate (6) via a telescopic cylinder (9).

2. A U-shaped stamping die structure without damaging the workpiece surface according to claim 1, characterized in that: A soft board is bonded to the lower surface of the pressing plate (6).

3. The U-shaped stamping die structure without damaging the workpiece surface according to claim 1, characterized in that: The left and right sides of the support plate (4) are respectively overlapped with the opposite sides of the two lower mold columns (3).

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