CN207103590U - A kind of metal plate brake forming mould - Google Patents

Abstract

The utility model discloses a sheet metal bending forming die, comprising: a punch, a forming die, a blank holder ring and a hydraulic ejector device, the lower end surface of the punch is a convex arc surface, and the forming die of the forming The surface is a concave arc surface matched with the convex arc surface, the blank holder is set on the punch, the hydraulic ejector device is installed in the forming die, and the hydraulic ejector device includes: A cylinder, a piston, a push rod and a ejector block, the ejector block is located directly below the molding surface in the forming die. Through the above method, the utility model has a simple structure, uses a blank holder to pack the sheet metal and bends it in a compressed state, avoids the phenomenon of sheet metal fracture during the stamping process, and uses a hydraulic ejector device to facilitate the unloading of the formed sheet metal. Improve processing efficiency.

Description

A sheet metal bending mold

technical field

The utility model relates to the technical field of molds, in particular to a sheet metal bending forming mold.

Background technique

The important parts of the sheet metal bending forming mold include punch, die and positioning plate. When bending thin sheet metal, first place the thin sheet metal on the positioning plate, use the punch to stamp the sheet metal, and pass through the die Forming, the mold structure is simple, but it has been found in long-term use that its disadvantage is that it is easy to cause sheet metal breakage during the stamping process, especially for thin sheet metal stamping, and the qualified rate of finished products is low.

Utility model content

The technical problem mainly solved by the utility model is to provide a sheet metal bending forming die, which can solve the above-mentioned defects existing in the existing bending forming dies.

In order to solve the above technical problems, a technical solution adopted by the utility model is to provide a sheet metal bending forming die, including: a punch, a forming die, a blank holder and a hydraulic ejector device, the lower end surface of the punch It is a convex arc surface, the forming surface of the forming die is a concave arc surface matched with the convex arc surface, the blank holder is set on the convex die, and the hydraulic ejector device is installed on the forming In the die, the hydraulic ejector device includes: a cylinder, a piston, a ejector rod and a ejector block, and the ejector block is located directly below the forming surface in the forming die.

In a preferred embodiment of the present invention, a positioning plate is installed above the forming die.

In a preferred embodiment of the utility model, a handle is provided on the upper end of the punch.

The beneficial effects of the utility model are: the utility model is simple in structure, uses the blank holder to pack the sheet metal and bends and forms it in the compacted state, avoids the sheet metal fracture phenomenon in the stamping process, and adopts the hydraulic ejector device to facilitate the forming of the sheet metal Unloading, improve processing efficiency.

Description of drawings

Fig. 1 is the structural representation of a kind of sheet metal bending forming mold of the present utility model;

The marks of each part in the accompanying drawings are as follows: 1. Punch, 2. Forming die, 3. Blank holder, 4. Hydraulic ejector, 5. Positioning plate, 6. Die handle, 11. Convex arc surface, 21 , concave arc surface, 41, top material block.

Detailed ways

The preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the advantages and characteristics of the utility model can be more easily understood by those skilled in the art, so that the protection scope of the utility model can be defined more clearly .

Please refer to Fig. 1 The utility model embodiment comprises:

A sheet metal bending forming die, comprising: a punch 1, a forming die 2, a blank holder 3 and a hydraulic ejector device 4, the lower end surface of the punch 1 is a convex arc surface 11, and the forming die 2 The molding surface is a concave arc surface 21 matched with the convex arc surface 11, the blank holder 3 is set on the punch 1, and the hydraulic ejector device 4 is installed in the molding die 2 , the hydraulic ejector device 4 includes: a cylinder, a piston, a ejector rod and an ejector block 41 , and the ejector block 41 is located directly below the inner molding surface of the forming die 2 .

Wherein, a positioning plate 5 is installed above the forming die 2 , and a handle 6 is installed on the upper end of the punch 1 .

When working, place the sheet metal on the positioning plate 5 above the die 2, and the punch drives the punch 1 to move downward until the blank holder 3 presses the sheet metal tightly, and the punch 1 continues to move downward into the die 2 , to complete sheet metal punching and bending forming, and then the hydraulic ejector device 4 drives the ejector block 41 to move up to eject and discharge the bent sheet metal.

The utility model provides a sheet metal bending forming die, which has a simple structure. The sheet metal is bent and formed by using a blank holder to pack the sheet metal in a compacted state, so as to avoid the sheet metal fracture phenomenon in the stamping process, and at the same time, a hydraulic ejector device is used to facilitate the forming. Sheet metal unloading, improve processing efficiency.

The above is only an embodiment of the utility model, and does not limit the patent scope of the utility model. Any equivalent structure or equivalent process conversion made by using the utility model specification and accompanying drawings, or directly or indirectly used in other Related technical fields are all included in the patent protection scope of the present utility model in the same way.

Claims (3)

1. A sheet metal bending forming die is characterized in that, comprising: a punch, a forming die, a blankholder and a hydraulic ejector, the lower end face of the punch is a convex arc surface, and the shape of the die is The molding surface is a concave arc surface matched with the convex arc surface, the blank holder is set on the punch, the hydraulic ejector device is installed in the forming die, and the hydraulic ejector device includes : cylinder, piston, ejector rod and ejector block, the ejector block is located directly below the molding surface in the forming die. 2. The sheet metal bending forming die according to claim 1, wherein a positioning plate is installed above the forming die. 3. The sheet metal bending forming die according to claim 1, characterized in that a handle is provided at the upper end of the punch.