Product slider pre-pulling device

Abstract

The invention discloses a product slider pre-pulling device. The product slider pre-pulling device comprises an oil cylinder bracket which is fixedly connected with a movable die frame; the upper partof the oil cylinder bracket is provided with a slider base in a clamping manner; the top of the slider base is connected with a slider; the middle part of the slider base is provided with a recess; the recess is matched with a fixed die frame in a mold assembly process; the upper sidewall of the recess is provided with a locking block; the lower sidewall of the recess is fixedly provided with a pre-pulling mechanism; the lower end of the slider base is connected with a shaft coupler; the shaft coupler is connected with a piston rod of an oil cylinder which is installed at the lower end of theoil cylinder bracket; the slider base slides up and down under the driving of the oil cylinder; and a margin is kept between the upper end of the shaft coupler and the lower end of the slider base. The product slider pre-pulling device disclosed by the invention has the remarkable effects that the slider is pre-pulled for a certain distance by utilizing the force of a pressing machine by virtue of the pre-pulling mechanism, and the pulling force provided by the oil cylinder can be greatly reduced, so the time for pulling out the slider is greatly shortened, and the continuity of die casting is guaranteed.

Description

technical field [0001] The invention relates to the technical field of die-casting molds, in particular to a product slider pre-drawing device. Background technique [0002] Die casting is a metal casting process, which is characterized by using high pressure to fill the molten metal into the mold cavity at high speed, and solidify and form under the action of pressure. [0003] With the development of industry, higher requirements are put forward for the accuracy of die casting. When the die-casting mold is opened, the general casting has a relatively large holding force on the product surface of the movable mold side slider, that is, the core, usually around 60T, so a large pulling force is required to overcome the holding force of the product on the core. At this time, a large hydraulic cylinder or air cylinder is needed to pull the core, otherwise the core cannot be pulled out smoothly, which will cause the failure of core pulling, affect the continuity of die-casting p...

AI Technical Summary

Problems solved by technology

When the die-casting mold is opened, the general casting has a relatively large holding force on the product surface of the movable mold side slider, that is, the core, usually around 60T, so a large pulling force is required to overcome the holding force of the product on the core. At this time, a large hydraulic cylinder or air cylinder is needed to pull the core, otherwise the core cannot be pulled out smoothly, which will cause the failure of core pulling, affect the continuity of die-casting production and product quality, and shorten the service life of the hydraulic cylinder or air cylinder

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