Automatic edge control device of industrial sewing machine

Abstract

The invention relates to an automatic edge control device of an industrial sewing machine. The automatic edge control device comprises a platform, and a pressing plate is fixedly arranged on the platform. The feeding direction of sewing material is the X direction, and the direction perpendicular to the horizontal direction is the Y direction. A motor and an electromagnet are fixedly arranged on the lower portion of the platform, the motor drives a synchronous belt to rotate, the synchronous belt is installed on a rigid rocker arm, an ejector rod of the electromagnet ejects the rigid rocker arm up, the upper end of a ratchet presses cloth on the lower end face of the pressing plate, and friction force between the sewing material and the pressing plate is much smaller than that between the ratchet and the cloth. A pair of photoelectric switches are arranged at the parts, close to the sewing portion, of the platform in the Y direction; when the photoelectric switch on the inner side can not detect the sewing material, the motor works in the forward direction, and the synchronous belt drives the ratchet to rotate in the forward direction so that the sewing material can move outwards. When the photoelectric switch on the outer side senses the sewing material, the motor works in the backward direction, the synchronous belt drives the ratchet to rotate in the reverse direction until the photoelectric switch on the outer side can not sense the sewing material, and then the motor stops working.

Description

Technical field [0001] The invention relates to an industrial sewing machine, in particular to an automatic edge controller of an industrial sewing machine, belonging to the technical field of industrial sewing machine edge control. Background technique [0002] Existing industrial sewing machines, in the process of sewing the edge of the fabric, some control the edge according to the "backer", and some rely on computer programs and servo motors to control the sewing track. [0003] When the edge of the fabric to be sewn is in a straight line, the "backer" is used for alignment, and the edge can be manually controlled, and the effect can also meet the general requirements. But when the edge of the fabric to be sewn is arc-shaped or other irregular lines, it is more difficult to manually control the edge, the sewing effect is poor, and the consistency is low. [0004] The way of relying on computer programs and servo motors to control the sewing track requires a large cost investment...

AI Technical Summary

Problems solved by technology

However, when the edge of the fabric to be sewn is arc-shaped or other irregular lines, it is more difficult to control the edge manually, the sewing effect is poor, and the consistency is low

[0004] However, relying on computer programs and servo motors to control the sewing trajectory requires a large cost investment, and is suitable for mass production of special parts, such as patch pockets on shirt pockets, and for some customized, non-batch clothing, or personalized For edge parts with a high degree of irregular curves, it is generally impossible to use computer programs and servo motors to control the sewing trajectory

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