SU1551591A1 - Device for supplying and tightening the bundling wire - Google Patents

Abstract

The invention relates to devices for feeding and tensioning the binding wire, can be used in the light, food and other industries and is aimed at improving the reliability of the device in operation. The device contains angled to each other and offset from each other nozzles 14 and 15, located between them pulling roller 9 and two pressure rollers 10 and 11 interacting with it. Pressing roller 10 interacts with pulling roller 9 to press the supplied 31 a roll 9 of a wire branch 2 and is installed at the outlet of the feed pipe 14, and the pressure roller 11 interacts with the stretch roller 9 to press the retractable 32 wire branch 2 and is located in front of the tail end of the discharge pipe 15. Prizhi me, the roller 10 located at the inlet nozzle 14 is installed with the possibility of wedge pinching of the wire 2 to the stretching roller 9 when the latter is rotated in the direction of the weft, and the roller 11 installed in front of the outlet nozzle 15 forms the wedge pinching of the wire 2 to the roller 9 as it rotates in the feed direction. The invention will significantly improve the reliability of the device in operation by eliminating the possibility of relaxing the turns of the wire 2 that encloses the pulling roller 9. 1 Cp. f-ly, 4 ill.

Description

The invention relates to the field of packaging and can be used in machines for tying products with wire.

The aim of the invention is to increase the reliability of the device in operation.

FIG. 1 shows a device for feeding and tensioning a binding wire as part of a binding machine; Fig. 2 shows a device for feeding and tensioning a binding wire, general view; in fig. 3 view A in FIG. 2 (pinch rollers not shown); in fig. - section bb in fig, 2.

The device 1 for feeding and tensioning the wire 2 is mounted on a common base 3 on the uprights k and 5 together with other main components: wiring 6 and the mechanism 7 for twisting the ends of the wrapping wire 2 and contains an 8S panel on which a reversing roller is mounted 9) pressure rollers 10 and 11, guiding elements 12 and 13 rigidly mounted on the panel 8. The roller 9 is made of a friction drum.

The guiding elements 12 and 13 have a supplying 1 and a discharge 15 branching nozzles for supplying the wire 2 to the extension roller 9 and withdrawing the wire 2 from the extension roller 9 and feeding it into the wiring 6. The branch pipes 1A and 15 are set at an angle of one to the other and are displaced relative to each other in the transverse direction for placing on the working surface 16 of the stretching roller 9 several wire turns

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2, for example, four, the working surface 16 of the drawing roller 9 being sandwiched between the planes of the inlet 1 and the outlet 15 nozzles.

The roller 9 is mounted on the panel 8 by means of a hub 17, which is rigidly connected, and a cup 18, on the inner seating surface of which the hub 17 of the hub 17 is located in rolling bearings 19. The hub 17 is connected to the shaft 21 of the hydraulic motor 22 by splined engagement 23.

The pressure rollers 10 and 11 are in contact with the working surface 16 of the drawing roller 9, and the roller 10 interacts with it in the area of the working surface 16. limited by the width of the inlet pipe 1, and the roller 11 in the area limited by the width of the outlet pipe 15. Roller 10 located at the exit section 2k of the pipe 1, and the roller 11 - in front of the entrance section 25 of the pipe 15.

The pressure rollers 10 and 11 are mounted on the panel 8 by means of rolling bearings 26, eccentrics 27 and axes 28. In order to retract the pressure rollers 10 and 11 when servicing the device and carrying out the initial filling of the free end of the wire 2 to the middle roller 9, the eccentrics 27 are provided with handles 29, who are tightly connected to them. The arms 29 are interconnected by a spring 30.

The exact positioning of the position of the inlet 31 and outlet 32 branches of the wire 9 relative to the stretch roller 9 and the rollers 10 and 11 can have diametrically shaped grooves 33 for the wire 2 located respectively in the planes of the inlet I and outlet 15 branch pipes.

In the upper part of the device on the panel 8, a drive 3 for the wire 2 is installed, which consists of walls 35 and 36, in the space between which the guide pulley 3.7 is located. The pulley 37 is mounted on the wall 35 of the drive 3 by means of an axis 38 and rolling bearings 39.

The device for feeding and tensioning the binding wire also operates as follows.

After a product (not shown) to be wrapped, the device 1 feeds the binding wire 2 into the wiring 6 to form a wire loop around the product. The position in which the wire 2 is being filled is characterized by the following features: the wire 2 fed from the coil of the unwinding device (not shown) passes through the guide pulley 37 and the nozzle 1A of the guide element 12, covers the working surface 16 of the long roller 9 several turns, for example, four, to which two pinch rollers 10 and 11 are pressed by means of a spring 30, the roller 10 pressing the underwater branch 31 of the wire, and the roller 11 - its retractable branch 32.

When the extension roller 9 rotates in the feed direction due to the friction forces between its working surface 16 and the wire 2, the magnitude of which is determined by the number of turns of the circumference of the extension roller 9 extended by the branch 32 of the wire 2 directed through the nozzle 15, the force required for charging through the passageway 6. At the same time, the pressure roller 11, due to the wedge pinching effect of the roller 9, presses the retractable branch 32 with greater force than the roller 10 the supplied wire branch 31 of the wire 2. Thereby eliminating the possibility of relaxation of the wires locks 2 spanning roller 9.

After looping and fixing the free end of the wire 2, the

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twisting mechanism volume 7 ocy-v | There is a weaving of the wire loop on the product, the stretching roller 9 rotates in the opposite direction, while the pressure roller 10 at the expense of the wedge clamping presses the branch 31 of the wire 2 with greater force than the roller 11 the branch 32 of the wire 2. Excess wire 2 is pushed into drive 3. Similarly, as in the case of feeding, the flattened branch of the wire 2 transmits a considerable tension force necessary to ensure high quality packaging of the product, and the possibility of relaxing the turns of the wire 2 for a long time is excluded e 9.

When the required degree of tension of the wire 2 is attained on the product, the pressure switch signal (not shown) of the twisting mechanism 7 carries out the operation of twisting the wire 2 into the knot and its sections. Then the cycle of feeding and tensioning the wire 2 is repeated.

Thus, the proposed device allows to achieve the goal of improving reliability in operation.

Claims (2)

1. A device for supplying and tensioning a binding wire, which has inlet and outlet pipes installed at an angle to one another and transversely displaced relative to each other, a reversing roller located between them and two pressure rollers mounted on the eccentrics, different the fact that, in order to increase reliability in operation, one of the pressure rollers is mounted at the output section of the supply pipe for wedge clamping of the stretching roller as it rotates in the direction opposite to the wire feed direction, the other in front of the inlet section of the outlet tube for wedge clamping of the pull roller, but when it rotates in the wire feed direction. 2. The device according to claim 1, characterized in that the pressure rollers have diametrically arranged grooves for the wire. Fig.} &BUT Fie.3; s / 5