Self-floating type clamp iron for limiting core assembly pouring device

Abstract

The invention discloses self-floating type clamp iron for limiting a core assembly pouring device. The self-floating type clamp iron comprises a clamp iron body and further comprises a self-floating type clamping mechanism, wherein the self-floating type clamping mechanism comprises clamping devices which are symmetrically arranged in a front-back manner and in a left-right manner; each clamping device comprises an upper pressing block, a side pressing block and a linkage structure; each linkage structure is movably connected with the clamp iron body; each upper pressing block is connected with the corresponding linkage structure, applies vertical acting force along the vertical direction and bears vertical reverse acting force under self-gravity acting force of the clamp iron body; each side pressing block is connected with the corresponding linkage structure, applies horizontal acting force along the horizontal direction and bears horizontal reverse acting force under vertical reverse acting force; a side mould of a core assembly is automatically clamped when an upper mould of the core assembly is compacted so as to realize the limitation of the core assembly pouring device (the core assembly), operation procedures are reduced and the production takt is accelerated.

Description

technical field [0001] The invention relates to a self-floating weight, in particular to a self-floating weight used for a limiting core casting device. Background technique [0002] When pouring the core group, in addition to the upper mold of the core group will be lifted up by the molten metal, the side mold of the core group will also be expanded by the molten metal, so before pouring, do It is best to prevent the upper model from lifting and the preventive measures from the side model. [0003] The traditional method is to first clamp the side of the sand mold with a C-shaped clamping block (or use a sand box to put the core group in), then place the weight on it, and then pour it. After the casting is solidified, remove the weight And the C-type clamping block (or sand box), the existing technical methods divide the measures to prevent the expansion into two processes (pressing the top, clamping the side), so it is more cumbersome to operate, especially when the side ...

AI Technical Summary

Problems solved by technology

[0003] The traditional method is to first clamp the side of the sand mold with a C-shaped clamping block (or use a sand box to put the core group in), then place the weight on it, and then pour it. After the casting is solidified, remove the weight And the C-type clamping block (or sand box), the existing technical methods divide the measures to prevent the expansion into two processes (pressing the top, clamping the side), so it is more cumbersome to operate, especially when the side The clamping process (adding C-shaped clamping blocks or using a sand box) is much more complicated than the above pressing process (releasing the pressure iron), and it is very inconvenient whether it is clamping preparation before pouring or disassembly after pouring. Affect production efficiency

[0004] Chinese invention patent CN2336895Y discloses a clamping device for sand mold pressing iron used in an out-of-box molding production line for producing castings. The left and right splints are respectively connected to one end of the left and right connecting rod clamping mechanisms, and the other ends of the left and right connecting rod clamping mechanisms are connected to the active rod, which is a beam. However, this invention has a complicated structure and many consumables, and when realizing side-type clamping, it must rely on external force to realize the pressing of the active rod on the weight iron, which is not simple enough.

[0005] Chinese invention patent CN 1015782B discloses a device for providing weight and lateral support for boxless sand mold parts with a horizontal parting line during pouring, solidification and cooling. The device includes a weight and a splint, and the bottom surface of the lower mold is placed On a conveyor, the device also includes generally "L" shaped arms, the two "L" shaped arms are mounted opposite each other in the same vertical plane passing through the sand mold part and in a horizontal plane They are placed laterally staggered from each other, and are rotatably connected to the weight iron at the position. Although this invention can better realize the upper mold pressing and side mold clamping of the sand mold at the same time, the splint needs an attached fixing structure to be clamped to the sand mold. In terms of side shape, the structure and production process are relatively complicated

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