SU144392A1 - Embroidery machine - Google Patents

Description

Embroidery machines are known, including a platform with sheets for securing the material to be embroidered, driven back and forth in two mutually perpendicular directions from two independent actuators. The latter are kinematically connected to the platform and receive pulses from a software perforated tape.

The proposed embroidery machine has a number of features that allow to simplify its design and expand the range of the floor; Cheni embroidery patterns. The essence of them lies in the fact that each actuator is designed as mounted on a fixed shaft and connected in series gear differentials; On each of them, two ratchets with oppositely directed teeth were planted (to add and subtract the magnitude of the platform travel). The ratchets are rotated by means of a lever with a spring-loaded electromagnet dog, which receives its impulses from a programmed perforated tape.

FIG. 1 is a schematic diagram of an embroidery machine; in fig. 2 is a longitudinal section of the machine’s actuator; in fig. 3 is an end view of the actuator shaft.

The embroidery machine (Fig. 1) includes a platform / with plates for securing the material being embroidered, driven in a reciprocating motion in two mutually perpendicular directions from two independent actuators 2 t 3, kinematically connected to platform 1 and receiving pulses from software perforated tape. The actuator is made in the form of gear differentials 5, mounted on a stationary shaft b and interconnected in series. On the carrier 7 of each differential 5, two ratchets (ratchet wheels) 8 and 9 are fitted with oppositely directed teeth to add and subtract the magnitude of the platform travel. Ratchets are rotated according to the number 144392-2 by means of the lever 10 with the spring-loaded dog 11 from the electromagnet 12, which receives impulses from the software perforated tape 4.

The operation of the embroidery machine's actuators is as follows.

The current collector 14 (Fig. 1) receives current through the switch (not shown), working in phase with the main shaft of the machine, which provides the necessary interaction between the mechanisms of the platform 1 and the needle mechanism 15. In the process of receiving the corresponding pulses from the tape 4 through the device 14, electromagnets 12, respectively, drive through a lever 10 with a spring-loaded dog 11 and rotate one or another ratchet wheel 8 or 9. , giving the opposite movement.

The angle of rotation of the pulley 17 (the output link of the actuator) is equal to the sum of the angles of rotation of the carrier 7 plus the angle of rotation of the sleeve 18, also receiving rotation from the levers 10.

Fixing the position of the actuator at the end of the feed is provided by the rod 19, which has two dogs (directed in opposite directions). The rod 19 receives the movement from the eccentric 20, receiving rotation from the main shaft of the machine.

Thus, while simultaneously rotating the pulleys 17 of the two actuators, the platform / movement in either direction (horizontally) can be communicated to obtain certain embroideries fixed on the belt 4.

The industrial usefulness of this proposal was confirmed by the All-Union Research Institute of Textile and Light Machinery.

Subject invention

Embroidery machine, including a platform with patches for securing the embroidered material, driven in reciprocating motion in two mutually perpendicular directions from two independent actuators, kinematically connected to the platform and receiving pulses from a software perforated tape, that, in order to simplify the design and expand the range of embroidery patterns, each actuator is designed as mounted on a stationary shaft and in series with unity gear differentials, on the carrier each of which is planted with two oppositely directed ratchet for adding and subtracting the platform move teeth and driven in rotation by a lever with a spring loaded pawl from the electromagnet, Receiving program pulses from the perforated belt.