Lifting type linkage and disconnection mechanism of double-head sewing machine

Abstract

A lifting type linkage and disconnection mechanism of a double-head sewing machine comprises a workbench which is provided with a first machine head and a second machine head, the first machine head and the second machine head are driven by the same power through a linkage shaft, and linkage and disconnection mechanism bodies are arranged between the first machine head and the linkage shaft and the second machine head and the linkage shaft; each linkage and disconnection mechanism body comprises a linkage seat, a connecting shaft is arranged at one end of each linkage seat, the connecting shafts are connected with the linkage shaft through a driving belt, a disconnection shaft is arranged at the other end of each linkage seat and connected with the corresponding machine head, a linkage and disconnection convex block is arranged on each disconnection shaft, a linkage and disconnection concave block is arranged on each connecting shaft, and each linkage and disconnection convex block is matched with the corresponding linkage and disconnection concave block. Lifting mechanisms are arranged on the workbench, the first machine head and the second machine head are installed on the lifting mechanisms, the side wall of each lifting mechanism is connected with a lifting linkage seat, a needle head transmission shaft is arranged in each lifting linkage seat, one end of each needle head transmission shaft is connected with a needle head installed in the corresponding machine head through a needle head transmission mechanism, and the other end of each needle head transmission shaft is connected with a universal coupling which is connected with the corresponding disconnection shaft.

Description

technical field [0001] The present invention relates to sewing machines, in particular to a lifting linkage disconnection mechanism for double-head (multiple-head) sewing machines, which is used for linkage or disconnection of the transmission of two-head or multi-head sewing machines. Background technique [0002] In order to save labor costs and improve production efficiency, people have developed double-head sewing machines. That is, two sewing heads are set on one working platform, and the two sewing heads are driven by the same power. In order to facilitate production and reduce production costs, a clutch mechanism is provided between the two machine heads. When the clutch mechanism is disconnected, one machine head works and the other machine head does not work. Chinese Patent No. ZL972066713, titled "Clutch Sliding Block for Double-head Sewing Machine", discloses a clutch sliding block, which is provided with teeth on both ends of the outer circle of the clutch and o...

AI Technical Summary

Problems solved by technology

The disadvantages are: 1. The shift fork needs to be operated manually, which is inflexible and has potential safety hazards; 2. The machine head cannot be adjusted up and down, which is inconvenient for sewing; 3. The shift fork needs to be oiled, which is easy to contaminate the fabric

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