Automatic knurling device for seamless tube piercing mill

The automatic knurling device of the seamless steel pipe piercing machine uses the cooperation of electric push rod and electromagnet to achieve precise position adjustment and stable clamping of the knurling wheel, which solves the problem of needing to replace the piercing roller after wear, and improves production efficiency and product quality.

CN224295137UActive Publication Date: 2026-05-29SHANDONG PANJIN STEEL PIPE MFG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG PANJIN STEEL PIPE MFG CO LTD
Filing Date
2025-05-12
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing seamless steel pipe piercing machines require replacement of piercing rollers after wear, resulting in low production efficiency and a tendency for "front jamming" accidents. They also cannot achieve automatic online knurling, affecting production stability.

Method used

Design an automatic knurling device for a seamless steel pipe piercing machine. Through the cooperation of electric push rod and electromagnet, the knurling wheel can be precisely positioned and securely clamped. Combined with the drive shaft, the roller is driven to perform online knurling and grooving, which improves friction and ensures the stability of the knurling wheel during high-speed rotation.

Benefits of technology

It increases the friction of billet piercing, reduces the frequency of roll replacement, reduces "front jamming" accidents, ensures uniform pattern depth and spacing, and improves production efficiency and product quality.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224295137U_ABST
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Abstract

The utility model discloses a seamless steel tube puncher automatic knurling device, including the drum box, be equipped with the top rod in the drum box, and the top rod one end is fixedly connected with the top, and the transmission shaft is rotatably connected and is inserted in the drum box symmetry, and the transmission shaft is installed in the inside of drum box symmetry through bearing, and through the connection of connecting rod, and drive cylinder draws the slide of connecting seat on the slide plate, makes knurling wheel can move along the inclined plane of roll, and electric push rod can accurately adjust the position between knurling wheel and roll, realizes the accurate control to knurling wheel feed quantity, and the rotation of roll is driven with transmission shaft to realize the online knurling of roll, to improve the friction of billet perforation time, reduces the replacement frequency of roll, improves equipment operation rate, reduces the " front card " accident of the insufficient friction of simultaneously, when the working condition changes and needs to be engraved, and the knurling wheel is replaced into the engraving cutter head, realizes a device and satisfies the function of online knurling of perforating roll, engraves the groove.
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