CN221817092U - Curved sheet stamping die - Google Patents

Abstract

The utility model discloses a curved sheet stamping die, comprising: an upper die and a lower die that are interlocked, a sliding block symmetrically arranged on the lower die, a curved pressure rod and a plurality of push blocks arranged on the upper die, the push blocks contact the outer edges of the sliding pressure blocks, the contact surface of the push blocks with the sliding pressure blocks is an inclined surface, and the push blocks push the sliding pressure blocks toward the center position of the lower die through the inclined surface. The utility model places the sheet to be processed between two sliding pressure blocks, presses the upper die down to close the mold, and during the process of closing the mold, the curved pressure rod contacts the sheet and pushes the sheet to move downward, and at the same time, when the push block contacts the sliding pressure block, the sliding pressure block is pushed toward the middle through the inclined surface of the push block, so that while the curved pressure rod is used for stamping, both sides of the sheet are pressed and formed synchronously by the sliding pressure blocks, thereby ensuring the forming effect of the product.

Description

Curved sheet material stamping die

Technical Field

The utility model relates to the technical field of stamping and forming, in particular to a curved sheet material stamping die.

Background Art

In the stamping process of some sheet products with curved surfaces, in the prior art, fixing parts are generally used on both sides of the product for fixing, and then the punch head with an arc surface of the upper die is used to punch downward to form a curved surface on the product. Since the material itself has a certain elasticity, after the stamping process, under the action of the elasticity of the material itself, the plates on both sides of the curved surface will rebound outward at a certain angle, affecting the forming effect.

Therefore, the prior art has defects and needs to be improved.

Utility Model Content

The utility model aims to overcome the shortcomings of the prior art and provide a curved sheet material stamping die.

The technical solution of the utility model is as follows: a curved sheet material stamping die is provided, comprising: an upper die and a lower die that are interlocked with each other, the lower die is symmetrically provided with sliding pressure blocks, the upper die is provided with a curved pressure rod and a plurality of pushing blocks, the pushing blocks are in contact with the outer edge of the sliding pressure blocks, the contact surface of the pushing blocks with the sliding pressure blocks is an inclined surface, and the pushing blocks push the sliding pressure blocks toward the center position of the lower die through the inclined surface.

Furthermore, the lower die is provided with a plurality of guide rails corresponding to the moving direction of the sliding pressing block, and the sliding pressing block is mounted on the guide rails.

Furthermore, the sliding pressing block is provided with a dovetail groove corresponding to the guide rail, and the guide rail is embedded in the dovetail groove.

Furthermore, the contact surface between the sliding pressure block and the pushing block is an inclined surface, and the inclined surfaces of the sliding pressure block and the pushing block fit each other.

Furthermore, connecting blocks are provided at both ends of the curved pressure rod, and the curved pressure rod is fixedly arranged on the bottom surface of the upper mold through the connecting blocks, and the distance between the connecting blocks is greater than the length of the long side of the sliding pressure block.

Furthermore, the lower mold is provided with a curved surface seat corresponding to the curved surface pressure rod, and the curved surface of the curved surface pressure rod is fitted with the curved surface of the curved surface seat.

By adopting the above scheme, the utility model places the sheet to be processed between two sliding blocks and presses the upper mold down to close the mold. During the process of closing the mold, the curved pressure rod contacts the sheet and pushes the sheet to move downward. At the same time, when the pushing block contacts the sliding pressure block, the sliding pressure block is pushed toward the middle by the inclined surface of the pushing block. Therefore, while the curved pressure rod is used for stamping, the sliding pressure block is used to simultaneously press and form both sides of the sheet, thereby ensuring the molding effect of the product.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of the utility model.

FIG. 2 is a top view of the utility model.

DETAILED DESCRIPTION

The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

Please refer to Figure 1. The utility model provides a curved sheet material stamping die, including: an upper die 1 and a lower die 2 that are interlocked with each other, the lower die 2 is symmetrically provided with a sliding pressure block 21, the upper die 1 is provided with a curved pressure rod 11 and a plurality of push blocks 12, the push blocks 12 are in contact with the outer edge of the sliding pressure block 21, the contact surface of the push block 12 with the sliding pressure block 21 is an inclined surface, and the push block 12 pushes the sliding pressure block 21 to move toward the center position of the lower die 2 through the inclined surface.

During operation, the sheet to be processed is placed between the two sliding blocks 21, and the upper mold 1 is pressed down to close the mold. During the closing process, the curved pressure rod 11 contacts the sheet and pushes the sheet to move downward. At the same time, when the push block 12 contacts the sliding block 21, the sliding block 21 is pushed toward the middle by the inclined surface of the push block 12, so that while the curved pressure rod 11 is stamping, the sliding block 21 is used to press and form both sides of the sheet synchronously, thereby ensuring the molding effect of the product.

In some embodiments, in order to ensure the molding effect of the product and provide a certain buffer space for the elastic deformation of the material, the side surfaces facing each other of the two sets of sliding pressure blocks 21 are set as inclined surfaces, so that the inclination angles on both sides of the product during the pressing process are greater than the angle required by the product. In this way, after the product is demolded, the elasticity of the material causes the two sides of the product to rebound slightly, thereby ensuring that the product after rebound meets the design and processing requirements.

The lower mold 2 is provided with a plurality of guide rails corresponding to the moving direction of the sliding block 21, and the sliding block 21 is mounted on the guide rails. The guide rails provide guidance for the movement of the sliding block 21, thereby ensuring the stability of the movement of the sliding block 21 and the pressing and forming effect on the sheet.

In some embodiments, the sliding block 21 is provided with a dovetail groove corresponding to the guide rail, and the guide rail is embedded in the dovetail groove, so as to improve the guiding effect of the guide rail on the sliding block 21, avoid the sliding block 21 shaking or moving and affecting the stability of movement, thereby effectively ensuring the stamping effect of the product.

The contact surface between the sliding block 21 and the pushing block 12 is an inclined surface, and the inclined surfaces of the sliding block 21 and the pushing block 12 fit each other, so as to ensure the pushing effect of the pushing block on the sliding block 21. In the process of pressing down the upper mold 1, since the sliding block 21 and the pushing block 12 are in contact through the inclined surface, the inclined surface is used to push the sliding block 21 to move to the middle position in the process of the pushing block 12 gradually moving downward, so as to achieve the compaction and shaping of the product.

The curved pressure rod 11 is provided with connecting blocks 111 at both ends, and the curved pressure rod 11 is fixedly provided on the bottom surface of the upper mold 1 through the connecting blocks 111, and the distance between the connecting blocks 111 is greater than the length of the long side of the sliding pressure block 21. By providing the connecting blocks 111 at both ends of the curved pressure rod 11 to connect the curved pressure rod 11 and the bottom surface of the upper mold 1, it is ensured that no other structures are provided above and below the working surface of the curved pressure rod 11, which facilitates the sliding pressure block 21 to press together and avoid interference.

The lower die 2 is provided with a curved seat 22 corresponding to the curved pressure rod 11, and the curved surface of the curved pressure rod 12 fits the curved surface of the curved seat 22. During the stamping process, the curved pressure rod 12 stamps and presses the sheet material on the curved seat 22, thereby realizing the stamping forming of the sheet material and improving the forming effect of the product.

In summary, the utility model places the sheet material to be processed between two sliding pressure blocks, presses the upper mold down to close the mold, and during the process of closing the mold, the curved pressure rod contacts the sheet material and pushes the sheet material to move downward. At the same time, when the pushing block contacts the sliding pressure block, the sliding pressure block is pushed toward the middle by the inclined surface of the pushing block, so that while the curved pressure rod is used for stamping, the two sides of the sheet material are simultaneously pressed and formed by the sliding pressure block, thereby ensuring the molding effect of the product.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. A curved sheet stamping die, comprising: the upper die and the lower die of mutual lock, the symmetry is provided with the slip briquetting on the lower die, be provided with curved surface depression bar and a plurality of impeller block on the upper die, the outside edge contact of impeller block and slip briquetting, the contact surface with the slip briquetting is the inclined plane on the impeller block, the impeller block promotes the slip briquetting through the inclined plane and moves towards the central point of lower die.

2. The curved sheet stamping die of claim 1, wherein the lower die is provided with a plurality of guide rails corresponding to a moving direction of the sliding press block, and the sliding press block is erected on the guide rails.

3. The curved sheet stamping die of claim 2, wherein the sliding press block is provided with a dovetail groove corresponding to the guide rail, and the guide rail is embedded in the dovetail groove.

4. The curved sheet stamping die of claim 1, wherein the contact surface of the sliding press block and the pushing block is an inclined surface, and the inclined surfaces of the sliding press block and the pushing block are mutually attached.

5. The curved sheet stamping die of claim 1, wherein connecting blocks are arranged at two ends of the curved pressing rod, the curved pressing rod is fixedly arranged on the bottom surface of the upper die through the connecting blocks, and the distance between the connecting blocks is larger than the length of the long side of the sliding pressing block.

6. The curved sheet stock stamping die of claim 1, wherein the lower die is provided with a curved seat corresponding to the curved pressing rod, and the curved surface of the curved pressing rod is attached to the curved surface of the curved seat.