SU676925A1 - Device for evaluating pneumatically-connected tread compactness - Google Patents

Description

in the form of two rings 7, needle assembly 8, adjusting device 9, electromagnet 10 and microswitch //.

The needle assembly 5 (see Fig. 3) has a cylinder 12, a back cover 13 with an electrical contact 14, a piston 15, a rod 16 made in the form of an L-shaped needle plate for separating the notch 17 with a lid at the end 18, making it Attaching the edge of the opening hole of the cylinder 12. The needle-plate has a cut 19 on the tip of the NEEDLE to improve its insertion into the complex thread and cut 20 to rotate the needle around the axis 21 when the cut 17 engages and holds it in this position. Knot needle soda (neigh also washer 22 and spring 23.

The adjustment mechanism contains a bracket, an adjusting screw 24, a spring 25, a slide, a contact 26, a feed of the thread 2, dried, pneumatically, 27 (Fig. 1), and the final position of the core of the electromagnet 10 is restricted by the stop 28 (Fig. 2) ).

Before starting work, the tracker system for assessing the compactness of pneumatic joints is built up on the test thread depending on its type, thickness, textural properties. By means of the screw 24, the compression force of the spring of the adjusting means 9 is changed. Through the sliding contact 26 this change is transmitted to the surface of the needle-plate (rod 16).

After the release of the pneumatic forwarding device 27, the thread passes through the eyes of the guide and is taken to the receiving package. The size of the eyes and the distance between them varies depending on the thickness of the processed NITI. When the button of the pujuk 6 is turned on, the voltage is applied to the winding of the electromagnet 10, and the core pushes the magnetic pinch 15 forward, which in turn feeds the stem (needle-plate) 1 €, while compressing the spring 23. Go to the extreme Position, the rod under the action of springs 23 and 25 drops its cutout 17 over the ledge of the cylinder body and remains in this position. In this case, the tip of the stem (needle-plate) engages with the thread 2. The core of the electromagnet 10 in the final position breaks the power supply circuit of the winding of the electromagnet 10. Under the action of the spring, the core of the electromagnet 10 returns to its original position, preparing the circuit to re-enable.

The moving thread begins to act on the tip of the stem (needle-plate) and pneumatically connected section of the thread, overcoming the total force of the springs of the adjusting device and the stem, raises the stem in the course of its movement, freeing the cutout 17 from engagement with the body cap. Spring 23 returns (rotates the piston rod to its original position and removes the tip of the rod (needle-plate) from the thread. In this position, the piston closes the contact in the coil circuit of the electromagnet, which | tsr | Odidy turn on and sends a pulse to the counter, which produces counting the number of pneumatically connected sections at a specific length of the thread. This triggers an electromagnet, the heart of KOTOpioro inserts the tip of the rod (needleplastic), into engagement with the thread.

The cycle of operation is repeated automatically a certain number of times, depending on the number of pneumatically connected sections over a certain length of thread. In case the number of interlaced sections from the thread is less than the specified one, a signal is sent indicating that it is necessary to change the technological parameters of production.

The proposed device provides an assessment of the compactness of the pneumo-connected threads directly in the process of their production, preventing the release of poor quality threads, simplifies maintenance and ensures reliable operation.

Claims (2)

1. US patent Afb 3363021, cl. 73-160, 1972. 2. US Patent 3290932, CL 73-160 1969.  fu..3 1D  Fiiz.g 11 2.8 18 23 12 22 21 131 20 75