Embroidery machine with double-side pendulum thread hooking rod device

Abstract

The invention discloses a two-side pendulum type thread-hooking pull rod device of an embroidery machine. The two-side pendulum type thread-hooking pull rod device comprises an embroidery machine frame type girder, and two motors installed in the girder, wherein two base plates are respectively arranged at the two sides of the bottom surface of the girder; the base plates arranged at the two sides are respectively provided with a thread-hooking pull rod transmission device which is horizontally parallel to the girder; each thread-hooking pull rod transmission device comprises an upper adjusting screw rod and a lower adjusting screw rod which are installed on an adjusting block, and the adjusting screw rods are respectively in threaded connection with a connecting rod provided with a threaded hole; each connecting rod is connected with a thread-hooking pull rod; induction pointers are installed on the thread-hooking pull rods; proximity switches arranged corresponding to the induction pointers are installed on the girder; the proximity switches are used for controlling the start and stop of the motors. According to the two-side pendulum type thread-hooking pull rod device, control devices of the motors are externally arranged on the girder and the thread-hooking pull rods by matching the induction pointers with the proximity switches in a girder structure which is internally provided with the two motors, so that the precision of the control is more direct, and the cumulative error under the high speed rotation of the motors is avoided.

Description

technical field [0001] The invention relates to a thread hooking rod device for an embroidery machine, in particular to a double-side pendulum type thread hooking rod device for an embroidery machine. Background technique [0002] At present, for the embroidery machine industry, after finishing one graphic unit of embroidery, it is necessary to trim the upper thread and lower thread under the cloth surface when starting to embroider another graphic unit. There are also hook knives and driving hooks in the existing thread trimming process. The mechanical structure such as the thread hooking rod device of the knife, the thread hooking rod device is an important device to drive the hook knife forward or backward. The main function of the hook knife is to maintain the tension of the upper thread and help the upper thread to be pulled back. During the thread trimming process, the scissors perform the thread trimming operation. In order to stabilize the thread trimmer, the hook kn...

AI Technical Summary

Problems solved by technology

[0003] The applicant has previously had a technical patent on the stop of the hook knife, which uses a sensor outside the motor spindle to control the opening and closing and stop of the motor, but the cumulative error caused by the rotation of the motor spindle will inevitably lead to the induction error of the sensor, and its control accuracy Room for improvement

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