SU600064A2 - Web accumulator - Google Patents

Description

tapes cannot be included in the control circuit at the same time. Normally, shaft 3 sensor 17 is turned on. If its limit switch is activated by the pressure of a column of tape, shaft 16 sensor 2 is turned on in the control circuit. After sensor 16 is activated, shaft 15 sensor 1 is turned on.

In the last shaft, a sensor 18 is additionally installed, dividing the volume of the shaft 3 into two zones, one of which is designed to provide synchronization of the feed and sampling speed of the tape from the hopper and the second to accumulate the tape when the tape machine stops.

In stationary mode of operation, the drive is powered, the rollers 4 feed the card with the weight gi into the shaft 1 at a speed Fj. From the shaft 1, the feed rollers 5 select a card tape and are fed into the shaft 2 at a speed. The difference in the linear velocities of the feed, their rollers 5 and 4 is created by an increase in diameters. This difference is sufficient to ensure the technological tension of the card between the rollers. The weight of the tape in mine 2 is equal to g2.

From shaft 2, the comb tape is selected by the feed rollers 6 at an ultrasonic speed and fed to the shaft 3.

To ensure technological tension between the feed rollers, it is necessary to observe the condition:. Tape weight in

mine 3 is equal to g3 -

OZUZZ

Sampling of the tape from the shaft 3 of the accumulator is carried out by the feeding rollers of the tape machine at a speed V. .., V.V ,.

When the tape machine stops, the hauling tape from the shaft 3 of the storage device is stopped. Due to the pressure supplied by the feeding rollers 6 of the chesing tape, the fold column moves in the shaft, and the sensor 16 and the electromagnet 14 remove the sprocket-coupling half 9 from the coupling with the coupling half 12. The rotation of the feeding rollers 6 and sampling the tape from mine 2 is stopped.

After the pole has filled the folds of the chesing tape of the shaft 2, the sensor 15 indicates that the belt 15 is connected to the control circuit, and the electromagnet 13 opens the half-coupling sprocket 8 and the half-coupling I. The rotation of the feed rollers 5 and the selection of the chesing tape from the shaft 1 stop.

If during the filling of the shaft 1, the tape machine is not fused, then the drive 15 and the previous machines of the production line are de-energized by a signal from the sensor 15.

When starting the belt machine after stopping, taking into account that the valve of sensor 18 is pressed.

its speed will be more than nominal.

The start of the production line and drive of the accumulator is performed some time after

start-up tape machine. This time delay is necessary so that a part of the belt is developed from the shaft 3 of the accumulator, and the valve of the sensor 17 for the presence of the belt is released from pressure. In this case, when

switching on the drive drive sensor 17 will be energized when the valve is not pressed, therefore the sensors 16 and 15 of the presence of the tape, although their valves are pressed, will remain connected to the control circuit; electromagnets 13 and

14 will not work and all feed rollers will begin to rotate.

As long as there is a stock of the card in the drives of the accumulator, the weight of the incoming card in all the drives is equal to gi, and the manufacturing capacity of the feed rollers is 4-Vi-gi, i.e., it corresponds to the performance of the equipment before the accumulator. The performance of the feeding rollers 5 is equal to Vz-gi, the feeding rollers 6-UZ-gi and the feeding rollers of the tape

cars .- . Taking into account the difference in the speeds of the feed rollers, all the mines of the accumulator are simultaneously freed from the stocks of carding mites at speeds, respectively, for the first shaft - gi (Vz-Vi), for the second shaft - gi (V3-Vz), for the third shaft - i {UM- Uz).

When the sensor 18 is released in the shaft 3, the tape masch goes through the time relay to the normal speed Un and then works in a stationary mode.

The application of the proposed accumulator provides an increase in the reserve amount of tape material, which allows improving the performance of equipment serviced by the accumulator.

Claims (2)

1. Storage tape material on the author. St. No. 537136, characterized in that, in order to increase productivity, it additionally has at least two shafts with feed rollers at the exit, while the shafts are installed horizontally one under the other, and the feed rollers of each subsequent shaft are located on the output side of the previous one, and the diameters of the rollers of every two neighboring shafts increase in the direction of movement of the material. 2. A drive according to claim 1, characterized in that the feed rollers of the shafts are kinematically connected to each other, and the rolls of the two shafts have electromagnetic clutches to which the sensors for the presence of the tape of these shafts are connected. Information sources, taken into account during the examination 1. USSR author's certificate No. 537136. cl. D OSH 15/44, 1975. qjvi /