SU244874A1 - FIRMWARE MACHINE - Google Patents

Description

Known sewing machines dry out; they fix the base firmware in rows and contain a single-needle, two-thread firmware mechanism, an electric motor drive, and a base feed mechanism along the line.

In order to manufacture frameworks of endless flat driving belts with longitudinal threads of the base in the proposed piercing machine, the base feeding mechanism along the line is made in the form of a frame, making a swinging motion with an amillitude equal to the width of the base and a replaceable cassette equipped with rollers for loading it up spirally wound these are warp threads; the machine is equipped with a mechanism for periodic longitudinal movement of the base, made in the form of an electromagnet with a switch that interacts with it; in the extreme positions of the frame with stops mounted on one of the cams of the cam lever-lever system of the base feeding mechanism along the line.

In addition, the cassette is provided with a comb for guiding the warp threads under the needle of the double-thread piercing mechanism and brakes for securing the ends of the warp threads, while the comb is mounted on a tilting lever that interacts with a limit switch for stopping the machine at the end of the work cycle.

Pa figs. 1 shows the kinematic scheme of the proposed firmware; in fig. 2 - replaceable cassette.

The base feed mechanism along the line contains a swinging frame L connected by means of cable gi 2, a connecting rod 3, and copier 4 with a twin-thread mechanism for flashing the base. The latter consists of an electric motor 5, a belt drive 6, a main shaft 7, a crank 8, a connecting rod 9, a needle bar 10, a givatel thread belt //, a toothed belt J2, a shaft 13, a gear iredech 14, 15, a rotary shuttle 16. The shaft 13 carries a cam 17 which is through double shoulders

lever 1b and cable 19 are associated with lever 20 carrying the ratchet 21, which engages with wheel 22, on the axis of which copier 4 of the base nodachi mechanism along the line is mounted. There are stops on the outer surface of this copier.

23 interacting with a switch 24, which includes an electromagnet 25 of a mechanism of iodiodic longitudinal movement of the base; tia frame is provided with a cassette 26 provided with rollers 27 carrying spiral base threads spirally wound on them, pressure arms 28, a comb 29 for guiding the warp threads and brakes 30 for their fastening. The swivel lever, on which the comb is attached, interacts with the final machine. The machine works as follows. The base of the belt frame is pre-wound in a spiral on the cassette rollers, with the threads being passed through a comb during winding. More threads are wound on the last two turns for strengthening. The base is secured with pressure plates and the cassette is mounted on the frame. When the motor is turned on, the copier 4 gives the frame a swinging movement with an amplitude equal to the width of the belt, with each turn of the needle corresponds to a frame displacement equal to the pitch of the warp threads. Through a half-turn of this copier in the positions corresponding to the extreme position of the frame, the stops 23 press the electromagnet switch, which moves the base in longitudinal direction. When the warp is displaced, its outer threads slide in the brakes, which keeps the warp tension of the warp threads constant. Thus, the stitching mechanism sews the base line by line to form the frame of the belt. At the end of the work cycle, the stitched base, making a full turn, runs over the comb and lowers it. In this case, the comb lever presses the limit switch, stopping the machine. The subject matter of the invention 1. A flashing machine comprising mounted on a fixed base a single-needle double-stitching mechanism of the warp in rows of rows driven by an electric motor and a warping mechanism along the row, characterized in that in order to manufacture frames of endless flat drive belts c. the longitudinal threads of the base, it is equipped with a mechanism for periodic longitudinal movement of the base, and the mechanism for feeding the base along the line is made in the form of a hinged frame on the base, making a swinging motion with an amplitude equal to the width of the base, by means of a cam-lever system firmware, and placed on the frame removable cassette. equipped with rollers for tensioning the warp threads spirally wound on them. 2. The machine according to claim 1, characterized in that the mechanism for periodic longitudinal movement of the base is made in the form of an electromagnet fixed on the base with a switch that interacts in the extreme positions of the frame with stops mounted on one of the cams of the cam-lever system of the base feeding mechanism along lines. 3. Machine no. 1, characterized in that the cassette is provided with a comb, which guides the warp threads under the needle of the double-threading mechanism of the firmware, and brakes for securing the ends of the warp threads, while the comb is mounted to the lever hinged on the cassette and interacting with the end switch its stop at the end of the work cycle.

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