A line gripping device and knotter

By designing the thread gripping plate and thread guide plate of the thread gripping device, the problem of the thread end not being able to be fixed when starting to sew is solved, and the thread end is stably clamped, preventing the thread from coming off at the sewing start point and improving the appearance and strength of the product.

CN224378454UActive Publication Date: 2026-06-19BULLMER ELECTROMECHANICAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BULLMER ELECTROMECHANICAL TECH
Filing Date
2025-06-11
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In existing technology, the thread end cannot be fixed when starting to sew, causing the thread to come loose at the starting point of sewing, which affects the appearance and strength of the product.

Method used

Design a wire gripping device, including a wire gripping plate and a wire pulling plate, which are slidably connected to the mounting base. By utilizing the movement of the wire pulling protrusion and the wire clamping protrusion at different positions, the wire end can be fixed and pulled out, avoiding interference with the machine needle.

Benefits of technology

It effectively prevents the thread from coming loose at the starting point of sewing, improves the appearance and strength of the product, and ensures that the thread end is clamped when starting to sew, preventing it from coming loose.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a thread-grabbing device and a knotting machine. The thread-grabbing device includes a mounting base, a thread-grabbing plate, and a thread-pulling plate. The mounting base is used to connect to the bottom of the needle plate. The thread-grabbing plate is slidably connected to the mounting base and has a first through hole. The thread-grabbing plate can extend forward relative to the mounting base to move the first through hole below the needle hole of the needle plate. The thread-pulling plate is slidably connected to the mounting base and is located below the thread-grabbing plate. The thread-pulling plate has a thread-pulling protrusion, a relief groove located at the rear end of the thread-pulling protrusion, and a thread-clamping protrusion located at the front end of the thread-pulling protrusion and spaced apart from the thread-pulling protrusion. The thread-pulling plate can extend forward relative to the mounting base to move the relief groove below the first through hole. The thread-pulling plate can also retract backward relative to the thread-grabbing plate to move the thread-pulling protrusion backward to pull out the thread end inside the shuttle bed in the first needle, and move the thread-clamping protrusion below the first through hole to clamp the thread end. This can improve the problem of the thread end not being fixed when starting the needle.
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