Automatic doffer for ring spinning machine

Abstract

An automatic doffer of a ring spinning machine for replacing the tubes (10) on the ring spinning machine (2) comprises a doffing dolly (1). The doffing dolly is located at one side of the ring spinning machine. A three-dimensional robot (4) is set on top of the doffing dolly, and a non-simultaneous tube drawing mechanism (5) is fixedly installed on the robot. The non-simultaneous tube drawing mechanism comprises a cross beam (51), and two fixed tube drawing devices (52) are set on the beam. Each fixed tube drawing device comprises a connecting block (53) and a mechanical arm (54). Adjustable tube drawing devices (55) are set between the two fixed tube drawing devices. Each adjustable tube drawing device comprises an upper limit plate (56) and a lower limit plate (57), and a longitudinal sliding rail (58) is connected between the upper limit plate and the lower limit plate. A longitudinal sliding block (59) is set on the sliding rail, and a back spring (60) is set between the longitudinal sliding block and the lower limit plate. A mechanical arm for grasping and putting down a tube is fixedly connected on the longitudinal sliding block. This automatic doffer has high efficiency in drawing tubes, and can prevent machine damage.

Description

technical field [0001] The invention relates to a device for replacing bobbins on a ring spinning frame, in particular to an intelligent doffing machine for ring spinning. Background technique [0002] At present, the new ring spinning frame starts to adopt the automatic doffing technology such as integral doffing, while the old ring spinning frame widely used in the spinning mills in our country still mostly adopts manual doffing. Due to the close cooperation between the full yarn bobbins and the spindles, it takes a lot of force to pull off the full yarn bobbins during doffing, so that the work intensity of manual doffing is very high, the labor cost increases, and the production efficiency is low. Therefore, there is an urgent need to automate the transformation of old ring spinning machines. [0003] In order to solve the above problems, many attempts have been made in the industry, such as pre-pulling, secondary yarn pulling and vibrating yarn pulling, etc. However, th...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, many attempts have been made in the industry, such as the use of methods such as pre-drawing, secondary yarn drawing and vibration drawing, but the yarn drawing device used in these methods produces radial force on the spindle during the yarn drawing process, It is easy to collide with the spindle, it is difficult to detect the problems of yarn leakage in doffing and low yarn pulling speed, which will easily cause damage to the equipment and reduce production efficiency

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