A kind of extrusion die head translation type quick opening device

By adopting a translational fast opening device in the extrusion die head, the vertical movement of the lower die lip is achieved using square guide grooves, positioning columns and other structures, the problems of small adjustment range, easy damage, and uneven parallelism of the fixed section in the prior art are solved, and the opening width is quickly and flexible and the mold lip flatness is improved.

CN115816794BActive Publication Date: 2025-05-23ZHEJIANG JINGCHENG MOLD MASCH CO LTD
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Patent Information

Application Number
CN202211521670.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-11-30
Publication Date
2025-05-23
Estimated Expiration
2042-11-30

AI Technical Summary

Technical Problem

The fast opening structure of the existing extrusion die head mainly adopts a lever type, with a small adjustment range, easy to damage, uneven parallelism of the fixed section, and the mold lip changes along the curve during the opening adjustment process, resulting in obvious high-direction dislocation.

Method used

The translational quick opening device is adopted to realize vertical up and down movement of the lower mold lip through the square guide groove, positioning column, threaded hole, oblique guide hole and other structures, and adjust the opening width.

Benefits of technology

It realizes rapid adjustment of the opening width, increases the adjustment range, does not damage the mold, is easy to operate, is flexible overall mechanism, and has good flatness of the mold lip.

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Abstract

The present invention provides an extrusion die head translational quick opening device, comprising an upper die and a lower die, a square guide groove is arranged at the lower part of the front side surface of the lower die, a plurality of positioning columns and threaded holes are arranged at the upper part of the front side surface of the lower die, a square guide strip is arranged in the square guide groove, and a plurality of oblique guide holes are arranged on the front side surface of the square guide strip; a lower die lip is arranged at the front part of the lower die, connecting holes and connecting screws corresponding to the threaded holes are arranged at intervals on the lower die lip, a vertical guide hole is arranged on the lower die lip corresponding to the position of the positioning column, a plurality of guide screws corresponding to the oblique guide holes are connected to the inner side surface of the lower die lip, side plates are connected to the two outer sides of the lower die, a bearing cover is connected to the outer side of one of the side plates, an adjusting nut is installed in the bearing cover through a bearing and the adjusting nut extends out of the bearing cover, an adjusting screw is connected to the threaded hole inside the adjusting nut, and the inner end of the adjusting screw is fixedly connected to the square guide strip. The present invention can quickly adjust the die lip opening gap.
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