CN116140467A - A self-adaptive die with variable cross-section - Google Patents

Abstract

The invention discloses a variable cross-section self-adaptive die, which comprises: the top of the upper forming die is vertically provided with an upper die handle, and the bottom surface of the upper forming die forms an upper die surface; the lower forming die is arranged corresponding to the upper forming die, and a lower die surface corresponding to the upper die surface is formed on the top surface of the lower forming die; the core rods are horizontally inserted into the lower forming die along the front end and the rear end directions and uniformly distributed around the lower die surface; the die holder is provided with a notch, and the lower forming die is arranged in the notch; the lower forming die is made of polyurethane, and has certain deformability, so that the lower forming die can adapt to plates with inconsistent plate thickness automatically, the longitudinal rigidity is ensured, the transverse adjustability is also realized, the application range of workpieces is wider, the upper forming die and the lower forming die do not need to be reprocessed in a traditional mode, and the time cost and the equipment cost are saved.

Description

A self-adaptive die with variable cross-section

technical field

The invention relates to a self-adaptive mold with variable section, which belongs to the field of molds.

Background technique

For some arc-shaped workpieces, two methods are usually used for forming processing, one is to press one by one (as shown in Figure 1), and the other is to press the upper and lower molds according to the cross-sectional shape (as shown in Figure 2) , the efficiency of knife-by-knife forming shown in Figure 1 is low, and the section form of the upper and lower dies shown in Figure 2 is fixed. If there is a slight difference in plate tolerances, inconsistent internal stress, different suppliers, etc. , the molded workpiece will have a deviation. Since the upper and lower molds are fixed in shape, there is no way to quickly adjust the product to the accurate size. In view of the above-mentioned problems encountered in the molding production process, it is urgent to provide a Adaptive dies with variable cross-sections.

Contents of the invention

The present invention provides a self-adaptive mold with variable section to solve the above-mentioned deficiencies in the prior art.

The technical scheme adopted in the present invention is:

An adaptive mold with variable cross section, comprising:

Upper molding die, the top of the upper molding die is vertically provided with an upper mold handle, and the bottom surface of the upper molding die forms an upper die surface;

A lower forming die, the lower forming die is set corresponding to the upper forming die, and the top surface of the lower forming die is formed with a lower die surface corresponding to the upper die surface;

Mandrels, the mandrels are provided with several mandrels, and several mandrels are horizontally inserted into the lower molding die along the front and rear end directions and evenly distributed around the lower die surface;

A mold base, the mold base is provided with a notch, and the lower molding die is arranged in the notch;

The lower molding die is made of polyurethane or rubber.

As a preferred embodiment of the present invention, the upper die handle is fixedly connected with the upper slider of the hydraulic press for transmission of pressure output.

As a preferred embodiment of the present invention, the mold base is fixedly connected to the top surface of the lower beam of the hydraulic press to provide a stable force-bearing platform.

The beneficial effects of the present invention are:

Since the lower forming die has a certain deformation ability, it can adapt itself to plates with inconsistent plate thicknesses during actual use. While ensuring the longitudinal rigidity, it also takes into account the horizontal adjustability, and the adaptability to the workpiece is wider. There is no need to reprocess the upper forming die and the lower forming die in the traditional way, which saves time and equipment costs.

Description of drawings

Fig. 1 is a knife-by-knife pressing molding module;

Fig. 2 is to open the upper and lower molds according to the cross-sectional shape to carry out the pressing module;

Fig. 3 is a structural schematic diagram of an adaptive mold with variable cross-section provided by the present invention.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 3: present embodiment is a kind of self-adaptive mold of variable section, comprises:

Upper forming die 2, the top of last forming die 2 is vertically provided with upper die handle 1, the bottom surface of upper forming die 2 forms upper die surface, last forming die 2 can adopt high-strength metal or non-metallic material, upper die face is according to being Design the shape of the workpiece;

Lower molding die 5, the lower molding die 5 is set correspondingly with the upper molding die 2, the top surface of the lower molding die 5 forms a lower die surface corresponding to the upper die surface, the lower molding die 5 is made of polyurethane material or rubber material, and the polyurethane material Both rubber and rubber materials are flexible substrates, which have a certain deformation ability compared with metal materials, and the lower die surface is designed according to the shape of the workpiece;

Mandrel 4, there are several mandrels 4, and several mandrels 4 are horizontally inserted into the lower molding die 5 along the front and rear ends and distributed evenly around the lower die surface. The mandrels 4 can be made of high-strength metal or non-metallic materials. To ensure the axial rigidity of the lower die surface;

Die base 6, mold base 6 is provided with notch, and lower forming mold 5 is arranged in the notch and the bottom surface of lower forming mold 5 and the side wall and the bottom surface of notch and side wall are closely fitted, and in actual application, also can To adopt other fixing methods, as long as the lower molding die 5 is fixed in the die holder 6 and gets final product.

Upper die handle 1 is detachably fixedly connected to the upper slider of the hydraulic press for transmission of pressure output. The actuator shaft of the hydraulic press is extended to drive the upper slider to move up and down linearly to drive the upper forming die 2 to move downward; in practical applications , A horizontal mounting plate can be set on the top of the upper die handle 1 and a threaded hole can be set on the mounting plate, and the mounting plate can be fixed on the bottom of the slide block on the hydraulic press with bolts.

The mold base 6 is fixedly connected with the top surface of the lower beam of the hydraulic press to provide a stable force-bearing platform; in practical applications, lugs can be set on both sides of the mold base 6 and threaded holes can be set on the lugs, and the mold can be screwed with bolts. Seat 6 is fixed on the top surface of the lower beam of the hydraulic press to get final product.

Hydraulic presses are commonly used hydraulic equipment on the market. Single-column, double-column or four-column hydraulic presses can be selected according to needs. The specific structure and working principle of the hydraulic press will not be described here.

When in use, the workpiece 3 is placed on the surface of the lower die, and then the hydraulic press is started, so that the hydraulic press drives the upper slider to move down and then drives the upper forming die 2 to move down, and the upper forming die 2 contacts the lower die placed on the lower forming die 5 After the workpiece 3 is placed on the surface, the workpiece 3 will gradually fit into the lower mold surface and enter the forming stage. After the forming is completed, the upper forming mold 2 will be driven up by the hydraulic press, and then the dimension inspection of the workpiece 3 will be carried out. If If the size is not up to standard, it can continue to be put into the lower mold surface for a certain degree of overpressure until it reaches the size required by the drawing; this kind of mold structure and molding method have been maturely used, and the effect is remarkable.

The above is only the preferred embodiment of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the patent of the present invention, some improvements and modifications can also be made. These improvements and Retouching should also be regarded as the protection scope of the patent of the present invention.

Claims (3)

1. A variable cross-section adaptive mold, comprising:

the top of the upper forming die is vertically provided with an upper die handle, and the bottom surface of the upper forming die forms an upper die surface;

the lower forming die is arranged corresponding to the upper forming die, and a lower die surface corresponding to the upper die surface is formed on the top surface of the lower forming die;

the core rods are horizontally inserted into the lower forming die along the front end and the rear end directions and uniformly distributed around the lower die surface;

the die holder is provided with a notch, and the lower forming die is arranged in the notch;

the lower forming die is made of polyurethane or rubber.

2. The variable cross-section adaptive mold of claim 1, wherein the upper shank is fixedly connected to the upper slide of the hydraulic press.

3. The variable cross-section adaptive die of claim 1 wherein the die holder is fixedly connected to the top surface of the lower cross-beam of the hydraulic press.

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