阅读说明：本技术 一种落纱小车剪刀装置 (Doffing trolley scissor device ) 是由 许亮 蒋利 于 2019-10-22 设计创作，主要内容包括：本发明公开了一种落纱小车剪刀装置,现有的落纱小车剪刀机构存在剪断成功率较低、安装较为麻烦的缺点。本发明通过设置固定刀片和活动刀片,通过活动刀片的摆动形成一个类似剪刀的裁剪过程,从而可以大大提高纱线的剪断成功率。本发明结构安装更加便捷,且维护方便。(The invention discloses a scissors device of a doffing trolley, which has the defects of low cutting success rate and troublesome installation of the existing scissors mechanism of the doffing trolley. According to the invention, the fixed blade and the movable blade are arranged, and the cutting process similar to a shear is formed by the swinging of the movable blade, so that the cutting success rate of the yarn can be greatly improved. The structure of the invention is more convenient to install and convenient to maintain.)

1. The utility model provides a dolly scissors device that doffs which characterized in that: doffing dolly scissors device include support, fixed blade, movable blade and movable blade actuating mechanism, the one end fixed mounting of inhaling the spool in the support on, fixed blade fixed mounting in the support on and with the port of inhaling the spool relative, be provided with on the fixed blade with the pipe hole cooperation of inhaling the spool relative circular knife face, the yarn is through the yarn passageway of inhaling that sets up on the support and pass through circular knife face in form get into behind the knife chamber in the pipe hole of inhaling the spool, fixed blade with the port of inhaling the spool between form the movable blade district of shuttling, the activity of movable blade set up in the movable blade district of shuttling and pass through movable blade actuating mechanism drive, the both sides face of fixed blade form with circular knife face matched with knife face.

2. The doffing cart scissor assembly according to claim 1, wherein: the movable blade is supported and installed on the bracket through the rotating shaft, and the movable blade driving mechanism is opposite to the movable blade.

3. The doffing cart scissor assembly according to claim 2, wherein: the movable blade driving mechanism is a cylinder, and a piston rod of the cylinder is opposite to the movable blade.

4. A doffing cart scissor assembly according to claim 3, wherein: the outer side of the movable blade is pressed by the fixing plate.

5. The doffing cart scissor assembly according to claim 4, wherein: and the movable blade is provided with a contact part which corresponds to the movable blade driving mechanism in a matching way.

Technical Field

The invention belongs to the field of doffing trolley parts, and particularly relates to a scissor device of a doffing trolley.

Background

An automatic doffing method of a rotor spinning machine is generally characterized in that a doffing trolley is arranged on the rotor spinning machine, and a scissors mechanism arranged on the doffing trolley is used for cutting off yarns after the yarns are sucked into a yarn suction tube. However, the existing scissors mechanism has the defects of low cutting success rate and troublesome installation.

Disclosure of Invention

Aiming at the defects of low cutting success rate and troublesome installation of the existing doffing trolley scissor mechanism, the invention aims to provide a doffing trolley scissor device.

Therefore, the invention adopts the following technical scheme: a scissors device of a doffing trolley is characterized by comprising a bracket, a fixed blade, a movable blade and a movable blade driving mechanism, wherein one end of a yarn suction tube is fixedly arranged on the bracket, the fixed blade is fixedly arranged on the bracket and is opposite to the port of the yarn suction tube, a circular knife surface which is opposite to the tube hole of the yarn suction tube in a matching way is arranged on the fixed blade, yarns enter the tube hole of the yarn suction tube through a yarn suction channel arranged on the bracket and a knife cavity formed in the circular knife surface, the fixed blade and the port of the yarn suction tube form the shuttle area of the movable blade, the movable blade is movably arranged in the movable blade shuttle area and is driven by the movable blade driving mechanism, and two side surfaces of the fixed blade form a blade surface matched with the circular blade surface.

In addition to the above technical solutions, the present invention also includes the following technical features.

The movable blade is supported and arranged on the bracket through the rotating shaft, and the movable blade driving mechanism is opposite to the movable blade, so that the movable blade is pushed to swing, and the cutting process similar to that of a common pair of scissors is formed.

The movable blade driving mechanism is a cylinder, and a piston rod of the cylinder is opposite to the movable blade.

The outer side of the movable blade is pressed against the fixed blade through the fixed plate, so that a movable gap between the fixed blade and the movable blade is ensured.

And the movable blade is provided with a contact part which corresponds to the movable blade driving mechanism in a matching way.

The invention can achieve the following beneficial effects: according to the invention, the fixed blade and the movable blade are arranged, and the cutting process similar to a shear is formed by the swinging of the movable blade, so that the cutting success rate of the yarn can be greatly improved. The structure of the invention is more convenient to install and convenient to maintain.

Drawings

Fig. 1 is a schematic front view of the present invention.

Fig. 2 is a schematic top view of the present invention.

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings.

As shown in fig. 1-2, the invention comprises a fixed blade 1, a movable blade 3, a movable blade driving mechanism 5 and a support 7, wherein one end of a yarn suction tube 2 is fixedly arranged on the support, the fixed blade is fixedly arranged on the support and is opposite to the port of the yarn suction tube, a circular knife face 11 which is opposite to the pipe hole of the yarn suction tube in a matching way is arranged on the fixed blade, yarns enter the pipe hole of the yarn suction tube through a yarn suction channel 8 arranged on the support and pass through a knife cavity formed in the circular knife face, a movable blade shuttle area is formed between the fixed blade and the port of the yarn suction tube, the movable blade is movably arranged in the movable blade shuttle area and is driven by the movable blade driving mechanism, the movable blade is supported and arranged on the support through a rotating shaft 6, the movable blade driving mechanism is opposite to the movable blade, and two side faces of the fixed blade form a, thereby forming a cutting process similar to that of a universal pair of scissors.

Further, the movable blade driving mechanism is an air cylinder, and a piston rod of the air cylinder is opposite to the movable blade.

Further, the outer side of the movable blade is pressed by the fixed plate 4, thereby securing a movable gap between the fixed blade and the movable blade.

Further, a contact part 9 corresponding to the movable blade driving mechanism is arranged on the movable blade.

When the yarn cutting device is used, the movable blade driving mechanism 5 drives the movable blade 3 to rotate along the rotating shaft, and the pressing plate 4 ensures the gap between the fixed blade 1 and the movable blade 3 through the matching of the movable blade and the fixed blade so as to cut off the yarn passing through the yarn suction tube 6.