一种多针缝纫机防跳线装置
By setting a second thread loop and a first thread loop on a multi-needle sewing machine, combined with a rotating adjusting screw and a locking needle structure, the problem of skipped stitches caused by unstable thread tension and trajectory deviation is solved, thereby improving the quality of sewn products and production efficiency, and reducing labor rework costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG DAINUOWEI INFORMATION TECHNOLOGY CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-07-17
AI Technical Summary
Multi-needle sewing machines are prone to unstable thread tension and deviations in needle and thread movement during use, leading to skipped stitches and affecting the quality of sewn products and production efficiency.
The design employs a second thread loop and a first thread loop to allow the thread to follow a fixed trajectory. The position of the adjustment plate can be adjusted by rotating the adjustment screw to accommodate needles of different lengths and reduce thread skipping. At the same time, the needle locking structure and multi-needle mounting base design stabilize the needles and ensure thread stability.
It effectively avoids skipped stitches caused by unstable thread tension and trajectory deviation, improves the quality of sewn products, reduces labor rework costs, and meets the high-efficiency operation requirements of multi-needle sewing machines.
Smart Images
Figure CN224513800U_ABST
Abstract
Claims
1. A multi-needle sewing machine anti-jumping device comprising a mounting frame (1), characterized in that, The mounting frame (1) has two symmetrical supports (2) at its lower end. The lower ends of the two supports (2) are connected to a multi-needle mounting seat (3). The multi-needle mounting seat (3) is provided with locking needle structures at equal intervals. Each locking needle structure is equipped with a machine needle (5). An L-shaped plate (7) is fixed on one side of the multi-needle mounting seat (3). An adjusting screw (6) is screwed onto the vertical section of the L-shaped plate (7). One end of the adjusting screw (6) is connected to an adjusting plate (14). The upper end of the adjusting plate (14) slides against the horizontal section of the L-shaped plate (7). The bottom end of the adjusting plate (14) is provided with first thread loops (13) at equal intervals, the same number as the machine needles (5).
2. A thread skip prevention device for a multi-needle sewing machine according to claim 1, wherein The horizontal section of the L-shaped plate (7) is provided with an opening (9) on the side near the multi-pin mounting base (3), and a second thread ring (10) is provided at equal intervals on one side of the opening (9) in the same number as the first thread ring (13).
3. A multi-needle sewing machine thread skip prevention device according to claim 1, wherein The locking pin structure includes pin holes evenly spaced at the bottom of the multi-pin mounting base (3). Each pin hole has a pin seat (4) fixed at its lower end. The middle of the pin seat (4) has a support hole (12) communicating with the pin hole. The multi-pin mounting base (3) is screwed with a locking bolt (8) on one side of each pin hole. A machine needle (5) is inserted into the support hole (12) and the pin hole, and one end of the locking bolt (8) abuts against the tail of the machine needle (5).
4. A thread skip prevention device for a multi-needle sewing machine according to claim 1, wherein Both ends of the multi-pin mounting base (3) are connected to the lower ends of the two supports (2) by screws.
5. A multi-needle sewing machine thread skip prevention device according to claim 1, wherein, The aperture of the first wire loop (13) is smaller than the aperture of the second wire loop (10).
6. A multi-needle sewing machine thread skip prevention device according to claim 1, wherein Bolt mounting holes (11) are provided at all four corners of the mounting frame (1).