SU1359370A1 - Device for controlling sewing machine - Google Patents

Abstract

The invention relates to sewing; mu equipment. The aim of the invention is to improve the control accuracy by taking into account the stitches actually made. Software control of the sewing machine mechanisms is carried out by a software unit in the form of a microcomputer. The clock pulses to advance the program are generated by a pulse sensor of the revolutions of the main shaft of the machine and enter the processor via a key, to the control input of which signals are received from the needle thread motion sensor. To ensure the arrival of pulses to the microcomputer only with the actual execution of the tie, the mark on the main shaft of the machine is placed in a position in which it acts on the speed sensor of the main shaft during the working stroke of the thread take-off lever, silt. with (ate with you from

Description

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The invention relates to. , to the controls of sewing machines and can be used to control universal sewing machines in the sewing, sewing and treading, shoe and leather-fur industry.

A known device for controlling a sewing machine, comprising a pulse sensor of revolutions of the main shaft, including a sensing element for fixing a mark applied on the main shaft, an electric motor connected via a converter to. In the output of the program block, which is connected by information inputs ... respectively, with the pedal position sensor and the control panel for selecting the machine operation (Niting Taims, No. 37, 1979, p.92

A disadvantage of the known device is that the control is carried out according to the direct (indirect, indirect) information and according to firmly defined programs, without / possibility: take into account the individual qualities of the operator.

The purpose of the invention is to improve the accuracy of control by taking into account the actual stitches.

This will ensure the creation of a sewing machine control device, drying, directing the management of the sewing process according to direct information and making it possible to compile programs during work, depending on the individual qualities of the operator.

The task is solved by creating a device controlling the sewing machines, consisting of a main shaft speed sensor, whose output is connected to the microcomputer via an input interface, and the output of the microcomputer is connected to a controlled electric motor of the sewing machine through a series of connected motor output. The output interface of the pedal and console position sensor is also connected to the input interface to determine the operating modes of the machine. For the system, it is characteristic that the speed sensor of the main shaft is connected kinematically with the motion sensor of the thread, so that the mark on the main shaft is under the speed sensor of the main shaft during operation.

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There is a thread guide, and the outputs of the sewing material presence sensor and the bottom thread presence sensor are connected to the input interface.

The advantages of the proposed device are that the information on the number of stitches actually applied by the thread is a direct parameter, reflecting the 1st work of the operator and the machine, which can be associated with the design of the products, their progress, the initial reporting, comparison by software with predetermined indicators, flow rate of the thread and materials, technical and economic indicators of machines. Increased speed of information processing. Provides high efficiency, increased productivity, labor, facilitation of operator labor, automated information support for rationing, training and control during the entire work process. The device is relatively simple and universal in comparison with other similar devices and can be applied when using the existing equipment of sewing enterprises of the light industry.

A drawing is a block diagram of the device.

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The control unit of the sewing machine consists of a sensor 1 of the revolutions of the main shaft 2, a microcomputer 3, an input interface 4, the micro output, and a computer 3 connected to a controlled one

electric motor 5 of sewing machine b by means of serially connected output interface 7 and control unit 8 of electric motor 5, K. the input interface 4 is connected to the outputs of the pedal position sensor 9, pool 10 for selecting the operating mode of the machine 6, the thread movement sensor II, the sewing material sensors 12 and the bottom thread sensor 13

Shuttle or braider (not shown). On the main shaft 2 there is a mark (marker) 14, the position 15 is marked, the needle mark. Microcomputer 3 has an output 16 for connecting to a central computing device, and output interface 7 has an output 17 for connecting auxiliary sewing machine mechanisms (not shown).

The device also contains a key (not shown) in the microcomputer 3, the input connected via the input interface 4 to the main shaft speed sensor 1, the control input to the thread motion sensor 11, and the output to the clock input of the microcomputer 3, which is the program block.

The label 14 is placed on the main shaft 2 in a position that ensures its effect on the sensor 1 during the working stroke. Nitriprit Givatel 15i

The device works as follows. I

The sensor 11 cyclically records the thread consumption during the working stroke of the thread guide. The signal at the output of the sensor during the movement of the thread enters the control input of the key, which during this period is open and transmits a pulse from the sensor 1 of the turns of the main shaft to the input of the microcomputer 3.

In the microcomputer 3, signals from the pedal position sensor 9 of the machine, from the console 10 to determine the operating mode, from the sensors 12 of the presence of stitching material and 13 of the presence of the lower thread according to a predetermined 1m program are received and processed. Through the console 10 to determine the mode of operation of the machine, the operator sets three possible modes - ordinary.

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machine learning mode and automatic control mode.

Promotion of the program is carried out only at the actual consumption of the needle thread, which ensures higher quality control.

Claims (1)

Invention Formula A device for controlling a sewing machine, comprising a pulse sensor of the main shaft speed, including a sensing element for fixing 5 marks - applied on the main shaft, an electric motor connected via a converter to the output of a program block connected by information inputs respectively to a pedal position sensor and a console for selecting the operating mode of the machine, characterized in that, in order to improve the control accuracy by taking into account the actual stitches , it is equipped with a needle thread movement sensor and a key, and the mark on the main shaft c. a position that ensures its effect on the sensitive element of the speed sensor 0 of the main shaft during the working stroke, the drive pin of the driver, wherein the main shaft speed sensor is connected to the clocking input of the program block via a key controlling the input of which is connected to the needle thread motion sensor. five