Air cushion type automatic yarn breaker

Abstract

The invention relates to an automatic yarn cutter used in flax wet spinning machine, the structure of which is that a detector block (5) is positioned in an air guide rail (2) which has two extending parts at the two ends; the end part of front extending part is provided with a yarn guide ring (4) while the end part of the back extending part is provided with a pressure rod (11); the upper part and the lower part of a front retaining board of the air guide rail (2) are respectively provided with a hole and the upper hole is used for the front extending part of the detector block (5) to go through and a support rod (3) is arranged above the lower hole, the front end of support rod (3) is provided with the yarn guide ring (4). The back of a back retaining board (9) is provided with a switchbox and one face thereof contacted with the pressure rod (11) is an elastic plastic film (12) and one of two contact points (1) thereof is arranged in the middle of the switch box and the other one is arranged on the elastic plastic film (12). Under normal conditions, the two contact points are disconnected. The front end of a cover board is provided with a groove for a shifting fork (7) to insert; an electromagnetic iron (20) is connected with the contact point (1) through a lead and a twisted iron sheet (15) which is connected with a spring (17) and a cutting knife (13) through a pin shaft (18) is arranged above the electromagnetic iron (20).

Description

Technical Field: [0001] The invention relates to an automatic yarn breaking device applied on a flax wet spinning spinning machine. Background technique: [0002] The electronic automatic yarn breaker currently in use is composed of a probe, an electromagnet and a chopper. When the yarn passes through the detection head, the detection head senses the vibration and pressure of the yarn, and does not send out a power-on signal, so that the electromagnet is in a power-off state, and the chopper cannot be rotated, and the roving can pass smoothly; once the yarn is broken, the detection head cannot sense When the vibration and pressure of the yarn are reached, an energization command is issued immediately, and the electromagnet is energized, attracting the iron piece, causing the chopper to rotate and cutting the roving. Due to the harsh working environment, high humidity in the workshop, and electronic components easily affected by water vapor, the yarn breaker does not operate or m...

AI Technical Summary

Problems solved by technology

Due to the harsh working environment, high humidity in the workshop, and the electronic components are easily affected by water vapor, so that the yarn breaker does not operate or malfunction; and because the detection part of the yarn breaker is all composed of electronic components, once a fault occurs, it is difficult to detect. Maintenance is also very inconvenient. Often a component is damaged and the entire detection part needs to be replaced, which is very expensive

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