Device for controlling clamping and jacking of traveling table

Abstract

The invention relates to a device for controlling the clamping and the jacking of a traveling table. The device for controlling the clamping and the jacking of the traveling table comprises an oil tank, a clamping / loosening oil cylinder, a jacking oil cylinder and a power source for driving all oil cylinders, and is characterized in that the power source comprises a pneumatic oil pump unit and an electric oil pump unit, wherein the electric oil pump unit comprises an electric oil pump; a first electromagnetic directional valve and a second electromagnetic directional valve are parallelly connected onto an oil feed line of the electric oil pump; the jacking oil cylinder is connected with the first electromagnetic directional valve serially; an upper cavity and a lower cavity of the clamping / loosening oil cylinder are respectively connected with the second electromagnetic directional valve; the pneumatic oil pump unit comprises a pneumatic oil pump; a third electromagnetic directional valve serially connected into a gas source pipeline is used for controlling the gas source supply of the pneumatic oil pump; the oil feed line of the pneumatic oil pump is parallelly connected onto a pipeline between the upper cavity of the clamping / loosening oil cylinder and the second electromagnetic directional valve; and a pressure relay for controlling the closing of a motor oil pump and the opening of the pneumatic oil pump is connected in parallel on the pipeline. By adopting the device provided by the invention, the speed for clamping, loosening and jacking the traveling table is rapid, the time for changing a die is short, and the energy consumption is lower.

Description

technical field [0001] The invention relates to parts of a press, in particular to a clamping and jacking control device for a movable workbench of a press, which is used for clamping, releasing and jacking up of a movable workbench of a press, and shortens the mold changing time. Background technique [0002] In order to facilitate the replacement of the mold, the press is usually equipped with a movable worktable, and the control of the movement and working state of the worktable is realized by the clamping and releasing cylinder and the jacking cylinder. When the press workbench is in working condition, jack up the oil cylinder, discharge oil from the lower chamber of the clamping and releasing cylinder, enter oil into the upper chamber of the clamping and releasing cylinder, and keep the clamping and releasing cylinder in a clamped state; when changing the mold, clamp The lower chamber of the tightening and unclamping oil cylinder enters oil and the lower chamber dischar...

AI Technical Summary

Problems solved by technology

However, the above-mentioned clamping and releasing cylinders and jacking cylinders use pneumatic pumps as the power source for the oil intake and oil discharge, but the flow rate of the pneumatic pumps is small, and it takes a long time to fill the pipeline with oil, and the clamping and loosening of the mobile workbench , The jacking speed is slow, which increases the mold change time

Since the flow rate of the pneumatic pump is limited by the product specifications, the large flow rate of the pneumatic pump is bulky and expensive. If the method of increasing the flow rate of the pneumatic pump is used to solve the problems of loose clamping and slow jacking speed of the mobile workbench , it will increase the production cost, and at the same time, the larger air pump also has the limitation of installation space

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