Upper die clamping device of bending machine

Abstract

The invention discloses an upper die clamping device of bending machine, wherin the device comprises a clamp body. The upper of the clamp body is connected with the bending machine and the lower of the clamp body is connected with the upper die of the bending die. The inner of the clamp body is provided with a clamping block for clamping the upper die of the bending die. The lower end of the clamping block forms an connection with the clamp body through an elastic ejector pin, and the upper end of the clamping block is connected with a hydraulic pipeline system for providing clamping force. The upper die clamping device of bending machine provided by the invention has the advantages of stable structure, fast and convenient usage and uniform clamping force, meeting the needs of rapid dismantlement and replacement of the upper die of the bending machine and flexibility compensation of a slide block ofthe bending machine, and improving work efficiency ofthe bending machine and quality of bending products.

Description

[0001] technical field [0002] The invention relates to a connection device between a bending machine and a bending upper die, that is, a clamping device for an upper die of a bending machine. [0003] Background technique [0004] The upper mold clamping device of the bending machine is widely used in various bending machines. It is the connection device between the bending machine and the bending mold. It is installed on the bending machine for clamping the bending upper mold. The bending upper die is installed between the connecting platen and the upper die connecting plate. Usually, there are a certain number of clamping devices on each bending machine, and each clamping device is fastened by screws, so that when installing or replacing the upper die , Just need to loosen and tighten dozens of screws, which is time-consuming and laborious and needs to be equipped with a special wrench, which is very inconvenient. In addition, if the screw is tightened and ...

AI Technical Summary

Problems solved by technology

The bending upper die is installed between the connecting platen and the upper die connecting plate. Usually, there are a certain number of clamping devices on each bending machine, and each clamping device is fastened by screws, so that when installing or replacing the upper die , it is necessary to loosen and tighten dozens of screws, which is time-consuming and laborious and requires a special wrench, which is very inconvenient

In addition, through the tightness of the screws and the clamping of the bending upper mold by the connecting plate and the pressing plate, the clamping force of the pressing plate will be uneven, which will cause the center of the bending upper mold to be inconsistent, and affect the quality of the bending product

[0005] When the bending machine is loaded, due to its own structure, the slider produces a small parabolic elastic deformation, which causes the angle of the bending workpiece to be inconsistent in the entire length direction.

At the same time, the bending length of the sheet metal has a great influence on the accuracy of the bending parts. The longer the sheet metal requires the greater the bending load, so the inclination of the equipment and the deformation of the slider become larger, making it more difficult to ensure the accuracy

In addition, the local wear of the bending die also affects the straightness of the bending workpiece

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