CN203737815U - Thick material extrusion draw hole stamping die - Google Patents

Abstract

The utility model relates to the field of stamping dies, in particular to a thick material extrusion draw hole stamping die comprises an upper base plate, an upper fixed plate, a stripper plate, a stripper plate insert, a lower fixed plate, a lower base plate, a raising structure, a punching structure, an extrusion draw hole and a fixed insert. The upper base plate, the upper fixed plate, the stripper plate, the stripper plate insert, the lower fixed plate and the lower base plate are sequentially fixed together, the raising structure comprises a raising punch, a first lower insert and a lower forming punch, the punching structure comprises a punch, a second lower insert and a die insert, the extrusion draw hole structurally comprises an extrusion draw hole punch, a third lower insert, a lower lifting pin and a spring, the raising punch, the punch and the extrusion draw hole punch are mounted in the fixed insert and fixed to the upper fixed plate, and the lower forming punch, the die insert, the lower lifting pin and the spring are respectively mounted in the corresponding lower inserts and fixedly connected with the lower fixed plate through the three lower inserts respectively. By the aid of the stamping die, draw hole precision of a stamping part is improved, production efficiency is increased, and cost is reduced.

Description

A thick material extrusion hole punching die

technical field

The utility model relates to a stamping die, in particular to a thick material extrusion punching die.

Background technique

The stamping die is a manufacturing device that uses the pressure of the punch to act on the die to change the shape of the metal placed in the die. When drawing holes for stamping materials, the thicker and harder the material, the more difficult it is to draw holes, which will also have a great impact on the quality of stamped products. Generally, thick stamping materials (hereinafter referred to as thick materials) will lead to uneven hole wall thickness. uniformity, different pumping hole heights, cracking of the pumping hole, and a large slope in the lower plane of the pumping hole. Existing extrusion hole punching dies generally consist of a punch, a die insert, a hole punch, a hole die insert, a lower ejector pin and a spring. The process is to punch out a hole through calculation, and then Use a hole punch to draw a hole, and the size tolerance of the hole diameter is based on the size of the hole punch. This kind of hole punching die, because the stamping material belt will produce many unstable factors during the transfer process of the stamping die, resulting in low hole punching accuracy, the size is either too large or too small, which has a greater impact on the extrusion hole punching of thick materials , resulting in an increase in the defective rate of stamping parts and increased costs.

Contents of the invention

The purpose of the utility model is to provide a punching die for extrusion and punching of thick materials, which can solve the problems in the background technology, is especially suitable for extrusion punching of thick materials, and improves the precision of the punching hole size.

In order to solve the above-mentioned technical problems, the technical solution of the utility model is: a punching die for thick material extrusion and punching holes, including upper and lower backing plates, upper and lower fixing plates, stripping plates and stripping plate inserts; The upper backing plate, upper fixing plate, stripping plate, stripping plate insert, lower fixing plate, and lower backing plate are fixed together sequentially. Pressing and pumping hole structure and fixed insert; said embossing structure is composed of embossing punch, first lower insert and lower forming punch; said punching structure is composed of punching punch, second lower insert and die insert; the extrusion hole structure is composed of extrusion hole punch, the third lower insert, lower ejector pin and spring; the embossing punch, punching punch and extrusion The punch for pressing and drawing holes is installed in the fixed insert and fixed with the upper fixed plate; the lower forming punch is installed in the first lower insert, the die insert is installed in the second lower insert, and the lower ejector pin and the spring are installed in the third lower insert, and are respectively fixedly connected with the lower fixing plate through the three lower inserts.

Preferably: the embossing punch, the punching punch and the extrusion punch are fixed on the upper fixing plate with hexagon socket head screws and pins at the same time.

Preferably: the lower forming punch, die insert, lower ejector pin and spring are simultaneously fixed on the lower fixing plate with screws and pins.

The utility model completes the work of extruding and drawing holes for thick materials through three continuous steps, and the progressive extrusion and drawing holes reduce the uneven flow of thick materials, avoiding the easy surface stress caused by the contact between the drawing hole punch and the material Napping reduces the occurrence of product scrapping due to easy cracking of the pumping hole and rough end surface, improves the production efficiency of stamping parts, reduces the maintenance cost of the mold, and can greatly extend the service life of the mold.

Description of drawings

Fig. 1, structural block diagram of the present utility model.

Detailed ways

The specific implementation of the present utility model will be further described in detail below in conjunction with the accompanying drawings and preferred solutions.

As shown in Figure 1, it is a structural block diagram of the present utility model, a kind of thick material extrusion punching punching die, the punching die specifically includes an upper backing plate 1, an upper fixing plate 2, a stripping plate 3, and a stripping plate insert 4. The lower fixing plate 5, the lower backing plate 6, the fixing insert 8, the embossing structure 18, the punching structure 19 and the extrusion hole structure 20; the upper backing plate 1, the upper fixing plate 2, the unloading plate 3. The stripping plate insert 4, the lower fixing plate 5, and the lower backing plate 6 are sequentially fixed together; the embossing structure 18 is composed of the embossing punch 7, the first lower insert 9 and the lower forming punch 10 The punching structure 19 is composed of the punching punch 11, the second lower insert 12 and the die insert 13; the extrusion drawing hole structure 20 is composed of the extrusion drawing hole punch 14, the third lower insert The insert 15, the lower ejector pin 16 and the spring 17 are formed; the embossing punch 7, the punching punch 11 and the extrusion punch 14 are installed in the fixed insert 8 and fixed with the upper fixed plate 2; The lower forming punch 10 is installed in the first lower insert 9, the die insert 13 is installed in the second lower insert 12, the lower ejector pin 16 and the spring 17 are installed in the third lower insert 15, And are fixedly connected with the lower fixing plate 5 through three lower inserts respectively.

Embodiment: The embossing punch 7, the punching punch 11 and the extrusion punch 14 in this embodiment are fixed on the upper fixing plate 2 with hexagon socket head screws and pins at the same time; the lower forming punch 10 , die insert 13, lower ejector pin 16 and spring 17 are fixed on the lower fixed plate 5 with screws and pins simultaneously.

The working principle is as follows: the pumping hole of the stamping part includes three steps. The first step is to punch the embossment on the thick plate (calculate the volume of the embossed material > the volume after the hole is drawn), so that the material flows downward; the second step, Punch holes at the material embossed position (the calculated material volume after punching > the volume required by the part size); the third step is to draw holes at the embossed position of the previous process (to meet the part's hole size requirements), and finally reshape in the post process, Obtain the punching material that meets the size requirements.

The utility model adopts screws and pins to fix the embossing structure 18, the punching structure 19 and the extrusion punching structure 20, which realizes the rapid adjustment of the position of the hole in the mold for the thick material, so that the material belt can be stably punched and holed in the mold, The precision of hole drawing of the mold is improved, which effectively avoids quality problems such as punching and cracking of parts, and greatly prolongs the service life of the mold.

Claims (3)

1. a hole diel is taken out in thick material extruding, comprises upper and lower backing plate, upper and lower fixing plate, and stripper and stripper are inserted; Described upper padding plate (1), upper mounted plate (2), stripper (3), stripper inserted (4), bottom plate (5), lower bolster (6) are fixed together successively, it is characterized in that: in mould, be also provided with raising structure (18), punch structure (19), extruding and take out pore structure (20) and fixedly insert (8); Described raising structure (18) by raising drift (7), insert for first time (9) and compacted under drift (10) form; Described punch structure (19) by pierce punch (11), insert for second time (12) and die plate insert (13) form; Described extruding is taken out pore structure (20) and is taken out hole drift (14), the 3rd time insert (15), lower ejector pin (16) and spring (17) formation by extruding; Described raising drift, pierce punch and extruding taken out hole drift and is arranged on and fixedly inserts interior and fix with upper mounted plate; In described compacted under drift is arranged on and inserts for first time, in die plate insert is arranged on and inserts for second time, lower ejector pin and spring fitting, in the 3rd time is inserted, and are fixedly connected with bottom plate by inserting under three respectively.

2. hole diel is taken out in thick material extruding according to claim 1, it is characterized in that: described raising drift (7), pierce punch (11) and extruding taken out hole drift (14) and be fixed on upper mounted plate (2) with hexagon socket head cap screw and pin simultaneously.

3. hole diel is taken out in thick material extruding according to claim 1, it is characterized in that: described compacted under drift (10), die plate insert (13), lower ejector pin (16) and spring (17) are fixed on bottom plate (5) with screw and pin simultaneously.