Automobile leather sewing angle device

By combining the synergistic effect of the chrome-plated main presser foot and the dual adjustable secondary presser angles, along with the adaptive pressure adjustment of the telescopic rod and compression spring, the edge of the double-layered leather after folding is pressed synchronously, solving the problem that traditional devices cannot fix the double-layered edge and improving the stability and automation of the sewing process.

CN224692357UActive Publication Date: 2026-08-28SHIJIAZHUANG YUANSEN AUTOMOTIVE INTERIOR PARTS CO LTD
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Patent Information

Application Number
CN202521780654.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-21
Publication Date
2026-08-28
Estimated Expiration
2035-08-21

AI Technical Summary

Technical Problem

Traditional automotive leather sewing corner pressing devices can only press a single layer and cannot effectively fix the double-layered edges after folding, which may cause the needle to hit the presser foot or skip stitches.

Method used

It adopts a combination structure of chrome-plated main pressure foot and double-sided adjustable secondary pressure angle, combined with telescopic rod and compression spring to adaptively adjust the pressure. Automatic folding is achieved through the eccentric gear transmission of rotating square plate and sliding plate, and spring clips are used to fix the folded edge to ensure uniform pressing.

Benefits of technology

It achieves synchronous pressing of the double-layered leather edges after folding, avoiding edge displacement and needle impact accidents, and improving the stability and automation of the sewing process.

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Abstract

The application relates to the technical field of sewing pressure angle, in particular to an automobile leather sewing pressure angle device, which comprises a presser foot main body, a chromium-plated main presser foot, a side position auxiliary pressure angle, a presser foot screw rod, a thrust bearing, a movable push piece and a hemming assembly. The automobile leather sewing pressure angle device of the application realizes synchronous pressing of the edges of the folded double-layer leather through the synergistic effect of the chromium-plated main presser foot and the double-side adjustable auxiliary pressure angle. The auxiliary pressure angle adopts a telescopic rod and compression spring combined structure, the pressure can be self-adaptively adjusted according to the thickness of the leather, and the uniform pressing force can be ensured during the sewing process; in addition, the hemming assembly composed of a rotary square plate and a sliding sheet realizes motion conversion through a skew gear transmission, replaces the traditional manual pre-hemming process, and the limiting groove of the sliding sheet moving path cooperates with the spring clamp, so that the uniformity of the hemming width is ensured, and the needle impact accident caused by excessive feeding is prevented.
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