90-degree bending forming device

Abstract

The utility model discloses a 90-degree bending forming device, which belongs to the technical field of die stamping design and comprises a bending punch and a lower die holder, two oppositely arranged positioning plates are arranged on the lower die holder and used for positioning two sides of a product, two oppositely arranged lower die forming plates are arranged in the lower die holder, and the two positioning plates are used for positioning two sides of the product. The side faces of the lower die forming plates are connected with positioning shafts, the positioning shafts penetrate through the lower die base, a lower die floating lift is arranged between the two lower die forming plates, the contact face between the lower die forming plates and the lower die floating lift is of an inclined face structure, and the lower die floating lift moves downwards to drive the upper portions of the lower die forming plates to rotate inwards along the positioning shafts. According to the bending die, a product can rebound by 90 degrees after being bent, the size is stable, and the size requirement is met.

Description

Technical Field

[0001] This utility model relates to a 90-degree bending forming device, belonging to the field of mold stamping design technology. Background Technology

[0002] In existing technologies, material bending can be achieved by using a 90-degree punch and a lower die forming part to form the finished product. Since the lower die forming part is fixed, springback occurs after the product is bent, leading to defects such as large bending angles and instability, thus failing to meet dimensional requirements. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a 90-degree bending forming device that can make the product spring back to 90 degrees after bending, with stable dimensions and meeting the dimensional requirements.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A 90-degree bending forming device includes a bending punch and a lower die base. The lower die base is provided with two opposing positioning plates for positioning the two sides of the product. Inside the lower die base, there are two opposing lower die forming plates. The sides of the lower die forming plates are connected to positioning shafts that pass through the lower die base. A lower die float is provided between the two lower die forming plates. The contact surface between the lower die forming plates and the lower die float is an inclined structure. The downward movement of the lower die float causes the upper part of the lower die forming plates to rotate inward along the positioning shaft.

[0006] The positioning plate has an arc-shaped structure.

[0007] The maximum rotation angle of the lower mold forming plate along the positioning axis is 2 degrees.

[0008] The angle of the lower mold floating contact surface is 95 degrees.

[0009] The bending punch is driven to move up and down by a lathe.

[0010] A spring is installed below the lower mold for floating.

[0011] The positioning plate is fixed to the lower mold base by welding.

[0012] The lower mold has a raised portion on its floating side, and a sliding groove that mates with the raised portion is provided on the inner wall of the lower mold base.

[0013] The beneficial effects of this utility model are as follows: This utility model provides a 90-degree bending forming device. A positioning shaft is connected to the side of the lower die forming plate. The positioning shaft passes through the lower die base. A lower die float is set between the two lower die forming plates. The contact surface between the lower die forming plate and the lower die float is a slope structure. The lower die float moves downward and drives the upper part of the lower die forming plate to rotate inward along the positioning shaft. This improves the existing fixed lower die forming plate so that it can rotate within a small range. This allows the interaction between the bending punch and the lower die forming plate to form a negative angle in the product. After the stamping is completed, the product springs back to 90 degrees, and the dimensions are stable, meeting the dimensional requirements. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the pre-folded structure of a 90-degree bending forming device according to this utility model;

[0015] Figure 2 This is a schematic diagram of the post-forming state of a 90-degree bending forming device according to this utility model;

[0016] Figure 3 This is a top view of a 90-degree bending and forming device according to the present invention.

[0017] The attached diagram is labeled as follows: 1-Bending punch; 2-Positioning plate; 3-Lower die base; 4-Product; 5-Positioning shaft; 6-Lower die forming plate; 7-Lower die floating. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the protection scope of the present invention.

[0019] Example 1

[0020] like Figures 1 to 3 As shown, this utility model discloses a 90-degree bending forming device, including a bending punch 1 and a lower die base 3. Two opposing positioning plates 2 are provided on the lower die base 3, used to position the two sides of a product 4. Two opposing lower die forming plates 6 are arranged inside the lower die base 3. Positioning shafts 5 are connected to the sides of the lower die forming plates 6, passing through the lower die base 3, allowing the lower die forming plates 6 to deflect at a small angle along the positioning shafts 5. A lower die lift 7 is provided between the two lower die forming plates 6. The contact surface between the lower die forming plates 6 and the lower die lift 7 is an inclined structure, which allows the lower die lift 7 to move downwards, causing the upper part of the lower die forming plates 6 to rotate inwards along the positioning shafts 5.

[0021] The working process of this utility model is as follows: the bending punch 1 moves downward to... Figure 1At this point, the lower die forming plate 6 interacts with the product 4 to form the product. Then, the bending punch 1 continues to move downwards, pushing the product 4 and the lower die lifting 7 downwards as well. At this time, the lower die lifting 7 drives the lower die forming plate 6 to move to... Figure 2 At this point, the product 4 has a negative angle due to the interaction between the bending punch 1 and the lower die forming plate 6. After the stamping is completed, the product 4 springs back to 90 degrees.

[0022] This invention improves upon the existing fixed lower die forming plate by allowing it to rotate within a small range. This enables the interaction between the bending punch and the lower die forming plate to create a negative angle in the product. After the stamping is completed, the product springs back to 90 degrees, ensuring dimensional stability and meeting the dimensional requirements.

[0023] Example 2

[0024] like Figures 1 to 3 As shown, this utility model discloses a 90-degree bending forming device, including a bending punch 1 and a lower die base 3. The bending punch 1 is driven to move up and down by a lathe. Two opposing positioning plates 2 are provided on the lower die base 3, and the positioning plates 2 are fixed to the lower die base 3 by welding. The positioning plates 2 have an arc-shaped structure, and the two positioning plates 2 are used to position the two sides of the product 4.

[0025] The lower mold base 3 has two opposing lower mold forming plates 6. A positioning shaft 5 is connected to the side of each lower mold forming plate 6, passing through the lower mold base 3. The lower mold forming plates 6 can rotate at a small angle along the positioning shaft 5. In this embodiment, the maximum rotation angle of the lower mold forming plates 6 along the positioning shaft 5 is 2 degrees.

[0026] A lower mold lifting platform 7 is provided between the two lower mold forming plates 6, and a spring is installed below the lower mold lifting platform 7. The lower mold lifting platform 7 has a protrusion on its side, and a sliding groove is formed on the inner wall of the lower mold base 3 to mate with the protrusion. The lower mold lifting platform 7 is guided to move up and down through the cooperation of the protrusion and the sliding groove. The contact surface between the lower mold forming plate 6 and the lower mold lifting platform 7 is an inclined structure; specifically, the angle of the contact surface of the lower mold lifting platform 7 is 95 degrees. This structure allows the lower mold lifting platform 7 to move downwards, causing the upper part of the lower mold forming plate 6 to rotate inwards along the positioning shaft 5.

[0027] The above are merely preferred embodiments of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A 90 degree bend forming apparatus, characterized by: The utility model relates to a bending punch (1) and a lower die base (3), the lower die base (3) is provided with two opposite positioning plates (2), two positioning plates (2) are used for positioning the two sides of product (4), the inside of lower die base (3) is provided with two opposite lower die forming plates (6), the side of lower die forming plate (6) is connected with positioning shaft (5), positioning shaft (5) passes through lower die base (3), and lower die float (7) is arranged between two lower die forming plates (6), the contact surface between lower die forming plate (6) and lower die float (7) is inclined plane structure, and lower die float (7) moves downward and drives lower die forming plate (6) upper portion to rotate inwards along positioning shaft (5).

2. The 90 degree bend forming device of claim 1, wherein: The positioning plate (2) is in an arc structure.

3. The 90 degree bend forming device of claim 1, wherein: The maximum rotation angle of the lower die forming plate (6) along the positioning shaft (5) is 2 degrees.

4. The 90 degree bend forming device of claim 3, wherein: The angle of the contact surface of the lower die float (7) is 95 degrees.

5. The 90 degree bend forming apparatus of claim 1, wherein: The bending punch (1) moves up and down by a lathe.

6. The 90 degree bend forming device of claim 1, wherein: The lower die float (7) is provided with a spring below.

7. The 90 degree bend forming device of claim 1, wherein: The positioning plate (2) is fixed on the lower die base (3) by welding.

8. The 90 degree bend forming device of claim 1, wherein: The lower die float (7) is provided with a protruding portion on the side surface, and a sliding groove matched with the protruding portion is formed on the inner wall of the lower die base (3).

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