SU530740A1 - Plant for producing blanks by casting followed by stamping - Google Patents

Description

one

The invention relates to the field of foundry and pressing equipment.

A known apparatus for manufacturing blanks with a combination of casting and punching 1, consisting of a low-pressure machine, a punching machine, a punching press, a device for removing a billet and a manipulator that is large in the shape of a rotatable pivoting arm.

But such an installation is not very productive, since it takes a lot of time to cast the billet, cool it and transport it along technological points.

A distinctive feature of this installation is that it is equipped with sets of uforms, each of which moves by a separate stepping conveyor, with grooves in the molds forming a common channel connected by gating holes with forming cavities and filled with metal simultaneously with the casting of blanks. . The installation is equipped with a T-shaped guide for guiding the cast strip with blanks in the process of their movement along the technological positions on which

, die-cutting press and nozsh1tsy with oncoming movement of the working bodies.

FIG. Figures 1 and 2 depict the proposed installation in two projects; in fig. 3 - half-form; in fig. 4 is a section along the line A-A in FIG. 3; in fig. 5 - steering; in fig. 6 is a section along BB in FIG. five.

The installation consists of a crucible 1, two sets of half-molds 2, mounted on separate conveyors, moving along closed circuits. a guide 3 for holding and directing the cast strip with the workpieces after opening the half-form, the stamp 4, the punching press 5 and the scissors 6. installed along the guide.

In the wall of each half-form 2 there is a groove 7 connected by a sprue channel 8 with a capacity of 9. Guide 3 has a T-shaped channel.

The installation works as follows. Before filling, paired molds, moving parts on different conveyors, are closed. At the same time, the grooves 7 form a channel 10 and continuous filling, the gating channels 8 are a gating hole 11, and the cavities 9 form the forming cavity 12. Next, the stepped conveyor closes the mold to the pouring position, where the forming cavity 12 is filled during the pause in the movement of the conveyor. During the subsequent movement of the conveyor to the step, a channel 10 is filled in, connecting the gating hole 11 of the adjacent molds located in the straight part of the conveyor.

The periods of movement of the stepping conveyor are calculated in such a way that the filling of a large volume of the cavity 12 takes place when it is stopped, and a small volume of the channel 10 - during the movement of the conveyor.

As a result, during solidification of the melt, a continuous strip and blanks are formed, interconnected by bridges.

After solidification with further movement of the conveyor, the mold half 2 opens a cast strip with blanks, which enters the T-shaped channel of the guide 3 and moves along it to the following technological positions. For one stroke of the press, a burr forging is obtained and then transported along the guide to the cutting position, while the next casting enters the stamping position. During the course of the overrun press, cutting to failure occurs. The burr strip moves to the next position, where the end portion is cut with scissors, returning to remelting.

The released half-molds, moving along a closed loop, return to their original position, and the whole cycle repeats.

Due to the fact that the process of solidification of the casting is combined in time with other technological operations, including transportation, the productivity of the installation increases.

Claims (1)

1. Copyright certificate № 384617, cl. On 22 D 27/12, 1971 / /. 1 - H Y A7 eight H A Fig.Z fpuB.Z A-l iO // FIG. one 6-6 Fi.g.6