CN204545133U - Drawing die - Google Patents

Abstract

The utility model relates to auto parts and components field, particularly drawing die, comprises punch and die and holding pad, described die comprises core rod and die holder, core rod is placed in the cavity of die holder, and be provided with cushion block between at the bottom of the bottom of core rod and the chamber of cavity, this cushion block is fixed on core rod or die holder.Owing to adopting above technical scheme, adjustment height of cushion block between core rod and die holder just equals the relative altitude that have adjusted die core rod forming surface and holding pad, thus realize the drawing depth of adjustment mould, only need cushion block to disassemble and carry out replacing thickness and just can realize this object, adjustment is got up very convenient, saving of work and time, efficiency is high.

Description

Drawing die

technical field

The utility model relates to the field of auto parts, in particular to a drawing die.

Background technique

The outer cover of the car is made by the drawing process, which utilizes the cold hardening properties of the steel. The so-called cold hardening properties refer to the strengthening indicators of the metal during the cold plastic deformation, such as yield. points, hardness, etc. increase. At room temperature, the steel is stretched to the strengthening stage and the external force is removed. After the steel is processed, the length of the steel increases, the diameter shrinks, and the elastic limit rises to the equivalent of the raw material strengthening stage, which greatly improves the elastic limit of the material and makes it The strain rate is reduced, increasing the stiffness of the material. However, if the stretching range of the steel is so small that the external force is removed without stretching to the strengthening stage, the strength of the steel will be insufficient. For example, parts such as the outer panel of the hood, the outer panel of the trunk lid, and the top cover of the car, because of their small curvature changes, relatively gentle shape, simple shape, and very small deformation, that is to say, small stretching, it is easy to cause damage. The rigidity of the parts is insufficient, and there are defects of slumping in the natural storage state, which is easily deformed, and the product quality is poor, so the drawing depth needs to be adjusted.

The traditional drawing die has an integrated structure, and its binder surface and forming surface are a casting. After the mold is developed, if the rigidity of the part is found to be insufficient, measures such as adjusting the pressure of the blank holder, optimizing the supplementary part of the peripheral process, adjusting the structure of the drawbead, or studying the bonding rate of the profile are usually taken to improve it. These measures take a long time, are expensive, and cause great damage to the mold body. At the same time, the rigidity of the parts may not be effectively improved or not significantly improved.

Contents of the invention

The purpose of this utility model is to provide a drawing die with sufficient drawing and convenient adjustment

In order to achieve the above object, the utility model adopts the following technical solutions: a drawing die, including a punch, a die and a binder ring, the die includes a mold core and a mold base, and the mold core is placed on the side of the mold base. In the concave cavity, a spacer is provided between the bottom of the mold core and the cavity bottom of the cavity, and the spacer is fixed on the mold core or the mold base.

Due to the adoption of the above technical scheme, adjusting the height of the pad between the core and the mold base is equivalent to adjusting the relative height of the molding surface of the die core and the binder ring, so as to realize the adjustment of the drawing depth of the mold. The purpose can be achieved by removing the block and replacing the thickness, which is very convenient to adjust, saves labor and time, and has high efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Structural schematic diagram of mold core when Fig. 2;

Fig. 3 is a structural schematic diagram of the mold base.

Detailed ways

As shown in Figures 1-3, a drawing die includes a punch 10, a die 20 and a binder ring, the die 20 includes a core 21 and a die base 22, and the die core 21 is placed in the die base 22 In the cavity 221 of the cavity, a spacer 23 is arranged between the bottom of the mold core 21 and the cavity bottom of the cavity 221 , and the spacer 23 is fixed on the core 21 or the mold base 22 .

Dividing the die 20 into two parts, the mold core 21 and the mold base 22, is also very convenient to process. Adjusting the height of the spacer 23 located between the core 21 and the mold base 22 is equivalent to adjusting the height of the core 21, then the relative height of the molding surface of the core 21 and the binder ring 23 is also adjusted, thereby realizing the adjustment The drawing depth of the die. When it is found that the rigidity of the part is insufficient, it is only necessary to disassemble the pad 23 for processing, or directly replace the pad 23 to increase the drawing depth, which is very convenient to adjust, saves labor and time, and has high efficiency.

The pads 23 are provided with more than two spacers evenly distributed in the concave cavity 221 . In order to reduce the weight of the mold and save production costs, the mold core 21 is not a solid structure, and the bottom of the mold core 21 is provided with outwardly protruding reinforcing ribs at intervals. The utility model is between the reinforcing ribs and the bottom of the concave cavity 221 A spacer 23 is provided, and one spacer is correspondingly provided for each reinforcing rib.

The pad 23 is fixed in the bottom of the concave cavity 221 and the two are connected by screws, and the side walls around the mold core 21 are provided with guide slides 211, which are attached to the sides of the cavity 221. on the side wall. Adjusting the thickness of the slide guide plate 211 can adjust the position of the mold core 21 in the concave cavity 221. In the utility model, the slide guide plate 211 and the mold core 21 are detachably connected. If the slide guide plate 211 is worn after long-time use, The guide slide plate 211 can be directly replaced to ensure the stability of the mold core 21 and save production costs.

A guiding convex plate 222 is provided on the side wall of the concave cavity 221 corresponding to the sliding guiding plate 211 , and the sliding guiding plate 211 abuts against the surface of the guiding convex plate 222 . When the mold core 21 is loaded into the mold base 22, the guide slide plate 211 slides downward along the guide convex plate 222, and the guide convex plate 222 makes the mold core 21 and the mold base 22 form intermittent contact, ensuring that the mold core 21 is stably and reliably loaded into the mold. The base 22 is also convenient for the mold core 21 to be taken out from the mold base 22. Both the guide slide plate 211 and the guide convex plate 222 can be made of wear-resistant materials.

Claims (5)

1. A drawing die, characterized in that: it includes a punch (10), a die (20) and a binder ring, and the die (20) includes a core (21) and a die base (22), The mold core (21) is placed in the concave cavity (221) of the mold base (22), and a pad (23) is arranged between the bottom of the mold core (21) and the cavity bottom of the concave cavity (221), and the pad ( 23) fixed on the mold core (21) or the mold base (22). 2 . The drawing die according to claim 1 , characterized in that: more than two pads ( 23 ) are provided and evenly spaced in the cavity ( 221 ). 3. The drawing die according to claim 1 or 2, characterized in that: the pad (23) is fixed in the bottom of the cavity (221) and the two are connected by screws. 4. The drawing die according to claim 3, characterized in that: the side walls around the mold core (21) are provided with guide plates (211), and the guide plates (211) are attached to the cavity (221) on the side wall. 5. The drawing die according to claim 4, characterized in that: a guide convex plate (222) is provided on the side wall of the cavity (221) corresponding to the slide guide plate (211), and the slide guide plate (211) leans against the plate surface of the guide convex plate (222).