SU597565A2 - Device for cutting strip of variable width - Google Patents

Description

(54) DEVICE FOR CUTTING VARIABLE TAPE

WIDTHS

periodically moving the cutting unit mounted on the plate 18 attached to the housing of the screw machine. The actuator 17 is also connected by a chain gear 19 with a clutch, for example, an electromagnetic clutch 20i mounted on the lead screw 6. The holder 7 is connected to the control unit 22, which also has a software device 23.

The device works as follows. A moment corresponding to the beginning of the cycle of the daily string jann takes the position shown in fig. 1 and corresponding to the maximum width of the produced tape. When the syringe is turned on, the rubber tape 24 cut by the string 11 is retracted by a transporting device (not shown) to the tire blank. When a given length is reached from the software device 23, a signal is received to turn on the electromagnetic clutch 20. A clutch coupling connects the lead screw 6 with the chain drive 19, driven from a permanently engaged. During operation of the drive device 17. Herewith, the lead screw 6, the holder 7 is moved, and therefore the strings 11 are moved down from the initial position to the distance caught by pressing one of the microswitches of block 22, which is tuned. according to From the program winding of the tape 24 to the tire blank. Thus, depending on the number of cutting steps, by periodically turning off the clutch 20, the required number of consecutive movements of the string 11 {according to position a, b, c, d shown in FIG. 1 dotted line).

During the operation of the device, the rotation of the drive 17 through the chain drive 16 and the intermediate shaft 14 is also transmitted to the block 9. Thus, the string 11 is continuously moved between blocks 8 and 9. In this case, the string moves through the cleaning die plate 10. In the case of simultaneous vertical the movement of the holder 7, the block 9 is displaced along the axis

the shaft 14 on the rolling point of the joint 13.

As a result of pressing the last microswitch of block -2, the holder moves down to the stop (position of re) of the tapping string d in FIG. , 1) and the final cutting of the tape, and then the rapid reversal of the drive 17 and the return of the cutting string 11 to its original: position.

The waste produced by the tape enters the syringe filling funnel through deflecting devices (not shown in the drawing).

On the proposed device, the cut quality is improved when receiving a tape of variable width, because as a result of moving the cutting element between the blocks perpendicular to the axis of the rubber hose to be cut, an additional cutting motion across the sleeve wall is created. By

By pulling the cutting string through the cleaning die, it is possible to maintain the working condition of its surface, which makes it possible to refuse the need for preheating. Moreover, the proposed device can be used both without heating and with heating of the cutting element.

Claims (2)

Invention Formula 0 1, A device for cutting the ribbon of variable width according to the ed. St. N 538897, characterized in that, coupled to increase | cutting quality, the node of the sequential cutting of the tape steps is made in the form of an infinite string, enveloping the blocks, one of which is kinematically connected with the drive of periodic movement of the sequential cutting unit through the intermediate shaft, the connection of the block with which is made movable along the axis of the shaft. 2. The device according to claim 1, characterized in that it is provided with a cleaning filler covering the string. five Sources of information taken into account in the examination: ,one. Copyright certificate. USSR № 538897, cl. B 29 H 3 / O6, 1975. Tgj f 24 7 ff / J 0u2.f