A structure for adjusting a drawbead of a blank holder

Abstract

The utility model belongs to the stamping forming technical field relates to a kind of edge ring drawbead adjustment structure, including fixed on the edge ring of punch lower mould, installation groove being located on the working surface of the edge ring and drawbead being located in the installation groove, the drawbead is formed by multiple drawbead subassemblies, the edge ring is equipped with the positioning mechanism for the positioning of drawbead subassembly on it. The edge ring and the drawbead are designed separately, and the drawbead subassembly is positioned in the installation groove by the positioning mechanism, so that the drawbead can be replaced according to the needs, without the need to re-order edge ring module, convenient to operate, and when the drawbead is damaged, the entire replacement is not needed, only the corresponding drawbead subassembly needs to be replaced, saving maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of stamping forming technology, and in particular to a pressure ring drawbead adjustment structure. Background Technology

[0002] In the stamping process of metal sheets such as automotive body panels, blank holders and draw beads are key components for controlling sheet material flow. Draw beads generate localized constraint forces, regulating the speed and amount of sheet material flowing into the die, thereby preventing defects such as wrinkling and tearing.

[0003] Traditional die draw beads are fixed structures machined directly onto the blank holder, and their height and shape cannot be changed. When stamping sheets of different materials and thicknesses, or when adjusting the forming process, the fixed draw beads cannot provide optimal constraint. This usually requires remanufacturing or extensively regrinding the blank holder, or even replacing the entire blank holder module. This method is time-consuming, labor-intensive, costly, and lacks flexibility, making it difficult to meet the demands of modern flexible production with diverse varieties and small batches. Therefore, this invention proposes a blank holder draw bead adjustment structure. Utility Model Content

[0004] The main objective of this invention is to provide a pressure ring drawbead adjustment structure to solve the problems mentioned in the background art.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a blank holder adjustment structure, comprising a blank holder fixed on the lower die of a stamping machine, a mounting groove provided on the working surface of the blank holder, and a drawing bead provided in the mounting groove, wherein the drawing bead is composed of multiple drawing inserts spliced ​​together, and the blank holder is provided with a positioning mechanism for positioning the drawing inserts.

[0006] Preferably, the positioning mechanism includes multiple pressure blocks fixed on the working surface of the pressure ring, and a hanging platform is provided at the bottom of the outer side of the drawing insert, with the pressure blocks pressing against the upper end surface of the hanging platform.

[0007] Preferably, the working surface of the pressure ring is provided with a pressure block mounting groove that communicates with the mounting groove. The pressure block is fixed in the pressure block mounting groove by bolts. The inner wall of the mounting groove is provided with a relief groove that is recessed into the pressure block mounting groove. The mounting platform extends into the relief groove, and the pressure block abuts against the upper end face of the mounting platform.

[0008] Preferably, the pressure ring is composed of multiple pressure modules spliced ​​together, and the pressure modules are fixed to the lower mold by bolts.

[0009] The beneficial effects of this utility model are as follows: the pressure ring and the drawbead are designed separately, and the drawbead is positioned in the mounting groove by the positioning mechanism, so that the drawbead can be replaced as needed without the need to re-customize the pressure ring module, which is convenient to operate. In addition, the drawbead is composed of multiple drawing inserts spliced ​​together. When it is damaged, it is not necessary to replace the whole thing, but only to replace the corresponding drawing insert, which saves maintenance costs. Attached Figure Description

[0010] Figure 1 This is a diagram showing the layout of the blank holder drawbead adjustment structure during operation, as illustrated in the example.

[0011] Figure 2 This is a schematic diagram of the mounting slot structure.

[0012] The numbers in the image represent: 1. Edge clamping ring; 2. Mounting groove; 3. Draw bead; 4. Draw insert; 5. Clamping block; 6. Hanging platform; 7. Clamping block mounting groove; 8. Clearance groove; 9. Edge clamping module. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to specific embodiments.

[0014] Example: like Figure 1-2 As shown, a blank holder and draw bead adjustment structure includes a blank holder 1 fixed on the lower die of a stamping machine, a mounting groove 2 on the working surface of the blank holder 1, and a draw bead 3 in the mounting groove 2. The draw bead 3 is composed of multiple draw inserts 4 spliced ​​together. The blank holder 1 is provided with a positioning mechanism for positioning the draw inserts 4.

[0015] The positioning mechanism includes multiple pressure blocks 5 fixed on the working surface of the pressure ring 1. The bottom of the outer side of the drawing insert 4 is provided with a hanging platform 6, and the pressure blocks 5 press against the upper end surface of the hanging platform 6.

[0016] The working surface of the pressure ring 1 is provided with a pressure block mounting groove 7 that communicates with the mounting groove 2. The pressure block 5 is fixed in the pressure block mounting groove 7 by bolts. The inner wall of the mounting groove 2 is provided with a relief groove 8 that is recessed into the pressure block mounting groove 7. The hanging platform 6 extends into the relief groove 8, and the pressure block 5 abuts against the upper end face of the hanging platform 6.

[0017] The pressing ring 1 is composed of multiple pressing modules 9, which are fixed to the lower mold by bolts.

[0018] The pressure ring 1 and the drawbead 3 are designed separately. The drawbead 3 can be replaced by removing the pressure block 5, thereby adjusting the shape and height of the drawbead 3. There is no need to re-customize the pressure ring 1 module, which is convenient to operate. Moreover, if the drawbead 3 is damaged, it does not need to be replaced as a whole. Only the corresponding drawing insert 4 needs to be replaced, which saves maintenance costs.

[0019] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A drawbead adjustment structure for a blank holder, characterized in that: It includes a blank holder fixed on the lower die of a stamping machine, a mounting groove on the working surface of the blank holder, and a drawing bead in the mounting groove. The drawing bead is composed of multiple drawing inserts. The blank holder is provided with a positioning mechanism for positioning the drawing inserts.

2. The blank holder drawbead adjustment structure according to claim 1, characterized in that: The positioning mechanism includes multiple pressure blocks fixed on the working surface of the pressure ring. The bottom of the outer side of the drawing insert is provided with a hanging platform, and the pressure blocks press against the upper end surface of the hanging platform.

3. The blank holder drawbead adjustment structure according to claim 2, characterized in that: The working surface of the pressure ring is provided with a pressure block mounting groove that communicates with the mounting groove. The pressure block is fixed in the pressure block mounting groove by bolts. The inner wall of the mounting groove is provided with a relief groove that is recessed into the pressure block mounting groove. The mounting platform extends into the relief groove, and the pressure block abuts against the upper end face of the mounting platform.

4. The blank holder drawbead adjustment structure according to claim 1, characterized in that: The pressure ring is composed of multiple pressure modules, which are fixed to the lower mold by bolts.

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