A double tension thread gripper

Abstract

The invention relates to the technical field of sewing machine equipment, and specifically relates to a double tension wire clamping device. The double tension wire clamping device comprises wire clampers, a wire clamper fixing plate, a wire loosening plate A, a wire loosening plate B, a wire loosening plate shaft pin, a wire loosening plate shaft pin sleeve, first screws and a second screw. The wire clampers comprise four sets including a first coarse adjustment wire clamper, a second coarse adjustment wire clamper, a first fine adjustment wire clamper and a second fine adjustment wire clamper. The wire loosening plate A is fixed to the wire clamper fixing plate via the first screws. The wire loosening plate B is disposed between the wire loosening plate A and the wire clamper fixing plate and abutted against the wire loosening plate A. The wire loosening plate B is fixed to one end of the wire loosening plate shaft pin via the second screw, and the other end of the wire loosening plate shaft pin passes through the wire clamper fixing plate and is in interference clearance fit with the wire loosening plate shaft pin sleeve. Through a mode combined with coarse adjustment and fine adjustment, thread tension is extremely easy to adjust, appropriate tension of each thread is ensured, consistent tension of two threads is also ensured, and sewing quality is effectively ensured.

Description

technical field [0001] The invention relates to the technical field of sewing machine equipment, in particular to a double tension thread gripper. Background technique [0002] There are thread clamps on the sewing machine. When sewing, the thread clamp needs to clamp the suture and give the suture an appropriate clamping force: if the clamping force is too large, the needle guides the suture when sewing, and the sewing If the tension on the thread is too large, the thread will be easily broken; if the clamping force is too small, when the needle guides the thread to sew, the tension on the thread will be too small, which will affect the stitch quality. When the sewing machine needs to perform a thread trimming action, the clamping mechanism of the sewing machine must be required to be released so that the suture can pass through the clamp without resistance, so as to ensure that the suture is cut off smoothly by the thread cutter. At present, most of the double-needle sewi...

AI Technical Summary

Problems solved by technology

At present, most of the double-needle sewing machine thread tensioners on the market use two thread tension nuts to adjust the tension of the two sutures respectively, but this thread tension device has the following defects: First, each thread only uses one thread tension nut to adjust Adjustment, it is difficult to achieve fine-tuning, which can easily lead to inconsistencies in the tension of the two groups of sutures, which seriously affects the sewing quality; Unable to meet the requirements, making the tightness of the thread clamping plate inconsistent, resulting in unsightly sewing stitches and unable to meet market demand

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