Collection mechanism

Abstract

The invention belongs to the technical field of sewing machines, provides a collection mechanism and solves problems of poor stability and the like of existing collection mechanisms. The collection mechanism comprises a base and a suction plate, a first swing arm is hinged to the base, a first connection end of the first swing arm is hinged to the base, and a first air cylinder is connected between the first swing arm and the base and capable of driving the first swing arm to swing. A second swing arm is hinged to the first swing arm, a second connection end of the second swing arm is hinged to a first swing end of the first swing arm, and a second air cylinder is connected between the second swing arm and the first swing arm and drives the second swing arm to swing. A third air cylinder is connected to a second swing end, a cylinder body of the third air cylinder is fixedly connected with the second swing end, and a piston rod of the third air cylinder is fixed to the suction plate and capable of driving the suction plate to move up and down. The suction plate is provided with a planar air suction plane arranged downwards, and the air suction plane is provided with a plurality of air suction holes. The collection mechanism has advantages of high stability and the like.

Description

technical field [0001] The invention belongs to the technical field of sewing machines and relates to a material receiving mechanism. Background technique [0002] The sewing machine is a machine that sews the sewing materials together by sewing thread. At the end of sewing, the sewn fabric needs to be collected in the receiving box, so that the fabric can be transferred to the next process for sewing or storage. Manual collection is the most commonly used method, but manual collection has disadvantages such as low collection efficiency and uneven stacking of fabrics. [0003] Chinese patent literature discloses an automatic feeding device for sewing machines [Application No.: 201510500419.8; Announcement No.: 105002671B], an automatic feeding device for sewing machines, including a transmission platform, and suction materials are symmetrically arranged on both sides of the transmission platform Mechanism, the suction mechanism includes a connecting rod and an L-shaped fram...

AI Technical Summary

Problems solved by technology

[0005] The feeding platform is generally a horizontal plane, and the cloth placed on the feeding platform is also in a horizontal plane state. In order to better absorb the cloth, the ends of these vacuum nozzles need to be kept on a horizontal plane, but each vacuum nozzle is Produced separately, there is a dimensional error on each vacuum nozzle, and the two flat rods are also produced separately, there is also a dimensional error on each flat rod, plus the installation error between each flat rod and the moving arm, and each vacuum nozzle and The installation error between the flat rods will cause the distance between each vacuum nozzle and the cloth to be different during the actual suction, which will cause the suction force of each part of the cloth to be different, and it will easily cause the cloth to not be completely sucked by the vacuum nozzle. , leading to poor stability in the receiving process

At the same time, because the vacuum nozzle can only be raised or lowered by the first cylinder, in order to prevent the vacuum nozzle from colliding with the feeding platform during the process of raising or lowering, a safety distance is often set between the vacuum nozzle and the feeding platform , if the safety distance is set too large, it will further cause the cloth to not be completely sucked up by the vacuum nozzle, resulting in poor stability of the receiving process

If the safety distance is set too small, it is easy to cause individual vacuum nozzles to collide with the feeding platform, making the stability of the receiving process poor

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