CN204953683U - Preparation circular arc bed charge fill forming die - Google Patents

Abstract

The utility model relates to a forming mold for making a circular arc bottom hopper. The mold includes hydraulic press workbench, mould, limit device and stripping device. The mold is composed of an upper mold and a lower mold. A round steel pipe with a round rib plate is used as a module, which is welded and fixed by a T-shaped steel plate frame and a reinforcing rib; the lower die consists of a set of movable stops fixed on the bottom plate of the lower die by bolts and a set of fixed stops welded on the bottom plate of the lower die It is composed of blocks, and both the movable block and the fixed block are provided with reinforcing ribs. The utility model has the characteristics of simple structure, low cost, good forming effect, convenient material removal, strong versatility and the like.

Description

A molding die for making arc bottom hopper

technical field

The utility model relates to a molding die for making an arc bottom hopper, which belongs to the field of mechanical processing.

Background technique

Elevator hoppers are containers used to load bulk materials and transport them to specified heights. Different types of elevator hoppers have different shapes. There is a type of hopper shape that is welded by a steel arc-shaped bottom plate and two side plates. The dimensions of this type of hopper vary with the model, specification and design of the hoist. The main difference is It lies in the arc radius of the bottom plate of the hopper, the height of the hopper, the size of the upper opening and the width of the hopper. From the analysis of the structure of the hopper, the forming of the arc-shaped bottom plate is the key to the manufacture during processing.

In mechanical manufacturing, the forming process of steel plate is usually to design the mold according to the shape of the part, and press the cut sheet on the press to achieve the desired shape by pressing the upper and lower molds. But this forming method has the following defects:

a. The cost of manufacturing molds is large. The larger the part, the larger the size of the mold, the higher the material consumption and manufacturing cost;

b. The mold manufacturing cycle is long. Since the sheet material has a rebound phenomenon after being pressed, even if the mold processing is completed, the mold must be repaired many times after the pressure test, so that the pressed part can reach the required size;

c. Die versatility is poor. A set of molds is only limited to pressing a hopper of one specification and cannot be used universally.

Contents of the invention

The purpose of the utility model is to provide a simple structure, low cost, good forming effect, convenient stripping, and strong versatility for making arc bottom hopper forming molds.

The utility model is solved through the following technical solutions: the mold includes a hydraulic press workbench, a mold, a limiting device and a stripping device, wherein the mold is composed of an upper mold and a lower mold, and the upper and lower molds are respectively installed on the upper and lower sides of the hydraulic press. On the lower workbench, the upper mold is made of a round steel pipe with a round rib plate inside as a module, which is welded and fixed by T-shaped steel plate frame and reinforcing rib; the lower mold is composed of a set of movable blocks fixed on the bottom plate of the lower mold by bolts It is composed of a set of fixed blocks welded on the bottom plate of the lower mold, and the movable block and the fixed block are all provided with reinforcing ribs.

Further, the stripping device matched with the mold is composed of a chain hook, a chain, a chain handle and a movable steel plate. The chain hook is arranged at both ends of the T-shaped steel plate frame, and the movable steel plate is arranged on the movable stopper and the fixed stopper on the bottom plate of the lower mold. The blocks are centered, and the chain handles are arranged at the two ends of the movable steel plate, and the chain is connected with the chain hook and the chain handle.

Further, the limiting device matched with the mold is arranged on one side of the fixed block on the bottom plate of the lower mold, and is composed of angle steel and a limiting block.

Further, the outer diameter of the round steel pipe module is 10-25mm smaller than the distance between the movable stopper and the fixed stopper on the bottom plate of the lower mold.

The beneficial effect of the utility model is to solve the molding problem. The mold of the utility model has the advantages of simple structure, short production cycle, low cost, good pressing and forming effect, and convenient use. In particular, the mold has strong versatility. Through small local adjustments, "one mold with multiple functions" can be realized, which greatly saves materials and manufacturing. funds.

Description of drawings

Fig. 1 is the front view of the mold of the embodiment of the utility model.

Fig. 2 is the left view of the mold of the embodiment of the utility model.

Fig. 3 is a schematic diagram of the pressing process of the embodiment of the utility model.

detailed description

As shown in the figure, this embodiment includes a hydraulic press workbench, a mold, a limiting device and a stripping device, wherein the mold is composed of an upper mold and a lower mold, and the upper and lower molds are respectively arranged on the upper and lower workbenches of the hydraulic press. The upper mold is made of a round steel pipe 1 with a round rib plate 2 inside as a module, which is welded and fixed by a T-shaped steel plate frame 3 and a reinforcing rib 4; the lower mold is composed of a group of movable blocks fixed on the bottom plate 5 of the lower mold 6 and a group of fixed stoppers 7 welded on the bottom plate of the lower mold form, and the movable stoppers 6 and the fixed stoppers 7 are respectively provided with reinforcing ribs 8 and 9.

The stripping device matched with the mold is composed of a chain hook 10, a chain 11, a hanging chain handle 12 and a movable steel plate 13. The chain hook 10 is set at both ends of the T-shaped steel plate frame 3, and the movable steel plate 13 is set on the bottom plate 5 of the lower mold. Center between stopper 6 and fixed stopper 7, hanging chain handle 12 is located at movable steel plate 13 two ends, and chain 11 is connected with chain hook 10 and hanging chain handle 12.

The limiting device matched with the mold is arranged on one side of the fixed block 7 on the bottom plate 5 of the lower mold, and is composed of an angle steel 14 and a limiting block 15 .

The outer diameter of the round steel pipe module 3 is about 10-25mm smaller than the distance between the movable stopper 6 and the fixed stopper 7 on the bottom plate of the lower die. When the outer diameter of the round steel pipe module 1 is designed, it is about 10-25mm smaller than the arc diameter of the pressed sheet. The inner upper edge of the movable block 6 and the fixed block 7 is processed into a circular arc surface, which is made of medium carbon steel and heat-treated to improve its hardness and wear resistance.

Hopper bottom sheet material 16 pressing operation process is as follows: (see Fig. 3)

Cut the bottom plate 16 of the hopper to the size according to the expanded length, and punch or drill the holes on the plate; assemble the upper and lower molds on the hydraulic press with bolts and adjust them; place the bottom plate 16 on the lower mold and Close to the limit block 15 on the limit device; start the hydraulic press, the upper mold moves downward, the bottom plate 16 is close to the upper mold circle module 1 and begins to deform, and as the upper mold is pressed down, the two ends of the hopper bottom plate 16 gradually rise up When the distance between the two ends of the bottom plate is slightly smaller than the size on the drawing (the value is determined by the pressure test), the bottom plate 16 of the hopper is pressed and formed, and the lower ends of the chains 11 on both sides are respectively hung on the chain handles 12. The material device takes out the hopper bottom plate material 16 together, and the pressing process is completed.

After the part pressure test is completed, the downward movement distance of the upper die can be fixed by the limit stopper on the hydraulic press. When performing batch processing, since the lower stroke of the upper die is a fixed value, the shape and size of the pressed sheet can be made All meet the requirements.

Claims (4)

1. A kind of molding mold for making arc bottom hopper, comprising oil press workbench, mould, limiter and stripping device, is characterized in that: mold is formed by matching of upper die and lower die, and upper die and lower die are respectively arranged on the hydraulic press On the upper and lower worktables, the upper mold is made of a round steel pipe with a round rib plate inside as a module, which is welded and fixed by a T-shaped steel plate frame and reinforcing ribs; the lower mold is composed of a group of movable parts fixed on the bottom plate of the lower mold The block and a group of fixed blocks welded on the bottom plate of the lower die form. 2. According to claim 1, the arc-bottom hopper forming mold is characterized in that: the stripping device matched with the mold is composed of a chain hook, a chain, a hanging chain handle and a movable steel plate, and the chain hook is arranged on a T-shaped steel plate At both ends of the frame, the movable steel plate is arranged in the middle between the movable stopper and the fixed stopper on the bottom plate of the lower mold, and the hanging chain handle is arranged at the two ends of the movable steel plate, and the chain is connected with the chain hook and the hanging chain handle. 3. The forming mold for making arc bottom hopper according to claim 1, characterized in that: the limit device matched with the mold is arranged on one side of the fixed stop on the bottom plate of the lower mold, and is composed of angle steel and limit block. 4. according to claim 1 or 2 or 3 described making circular arc bottom hopper forming mold, it is characterized in that: the outer diameter of described round steel pipe module is less than 10 between the movable stopper and the fixed stopper on the bottom plate of the lower mold. -25mm.