Needle protector for cylindrical sewing machine

Abstract

This invention discloses a structure of warding needle in a straight barrel-type sewing machine. It is used to stabilize the vehicle sewing needle when the needle reaches downward the sewing pedestal in order to get rid of the swinging of the needle that may lead to cracking or jumping. In addition, the structure of the warding needle can adjust the time difference when the warding needle is forward and backward. This invention includes a device of warding the needle and a driving mechanism. The device consists of a moving body and forward and back needles, the forward needle is fixed on the moving body while the back needle is designed over the body. When the driving mechanism offers a force that drives the moving body of the warding needle repeatedly, the warding needle will oscillate against the above-mentioned movements, when the vehicle sewing needle is matched downward, it will close to the back warding needle to stabilize the swinging sewing needle.

Description

technical field [0001] The invention relates to a needle retaining mechanism of a straight cylinder sewing machine, in particular to a needle retaining mechanism of a straight cylinder sewing machine which stabilizes sewing needles shaking due to high-speed movement when the sewing machine is in use. Background technique [0002] The sewing industry technology has reached a fairly sophisticated stage. Now there are more fast and easy sewing machines for the mass production of garments in factories. The early sewing machines were manually operated one by one with feet and manual operations. Most of the sewing factories today Fully automatic operation is used to assist manual labor, so as to achieve the purpose of increasing production efficiency and reducing costs. [0003] Since industrial sewing machines are required to achieve the function of high-efficiency production, it is inevitable to achieve this function with high sewing speed and reduce the probability of needle br...

AI Technical Summary

Problems solved by technology

[0003] Since industrial sewing machines are required to achieve the function of high-efficiency production, it is inevitable to achieve this function with high sewing speed and reduce the probability of needle breakage. Existing sewing machines all use high-speed motors to speed up sewing. However, although high-speed motors are used It will increase the speed, but the sewing needle will vibrate under high-speed motion. Due to the fast needle feeding speed and the shaking of the sewing needle, the chance of needle breakage will increase. Therefore, it is necessary to interrupt the sewing work, causing trouble. Can't increase productivity

[0004] The needle retainer mechanism (see Fig. 1) of the existing straight cylinder sewing machine is to connect the front retainer needle 13a on the lower looper 40, and with the shaft rod 41 of the lower looper 40 being controlled to move, when the sewing needle (not shown in the figure) after the needle is advanced downwards, and when preparing to lift the needle upwards, the lower looper 40 starts to move at this time, and is ready to pass through the looped yarn (not shown in the figure), and then drives the front retaining needle 13a to approach The back stop needle 12a; and the back stop needle 12a is connected to the cloth pushing tooth 42, and the cloth pushing tooth 42 is driven by the connecting rod 43, and then pushes the back stop needle 12a close to the front stop needle 13a, and slightly clamps the sewing needle, However, this needle stop mechanism clamps the sewing needle when the sewing needle is about to start lifting upwards, and its front and rear stop needles 13a, 12a are driven by different shaft rods 41 and connecting rods 43 respectively. If the timing is not well grasped, it is easy to cause broken needles or skipped needles

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