SU707850A1 - Device for bundling articles with wire - Google Patents

Description

The device relates to packaging technology and can be used in transport and packaging lines in the pulp and paper industry for wrapping compressed bales of cellulose with metal wire. BACKGROUND OF THE INVENTION Known devices for wrapping piece objects with wire, including bales of cellulose. Structurally, they are characterized by the presence of wiring, reversing feeder, in the hall mechanism with fixtures for fixing, cutting and pushing the wire, as well as the clamping beam and the conveyor of the bale feed. In known devices, the design of the devices for cutting and pushing the wire is such that the cut of the wire and the pushing of the finished assembly from the groove into the pinion gear require moving the actuators to cut and push the finished assembly in opposite directions. Since, in known devices, the knife that produces the segment and the elements that push the finished assembly out of the groove in the gear wheel is driven by one actuator, a double stroke of the actuator (e.g., pneumatic cylinder rod) is required to implement the wire and to push the finished assembly. The presence of a double stroke of the actuator for carrying out the wire segments and pushing the finished assembly limits the performance of the known devices for tying cellulose bales with wire and reduces their reliability. It is also known a device for wrapping articles with wire, containing a wiring, a reversing-falling mechanism, into a filling mechanism with fixtures, cutting and pushing out a wire, as well as a conveyor and a clamping device — in the form of a cross bar, while the device has a movable pneumatic cylinder П- a shaped frame and a pinion for twisting the wire, mounted between the arms of the frame, on one of which a cutting edge is formed to cut and push the wire 1.

Since the wire segment and the ejection of the finished assembly are carried out when the actuators are moved in opposite directions, to complete the cycle of cutting and ejecting the wire from the groove to the gate gear, the pneumatic cylinder performs forward and reverse working strokes. The presence of a double working stroke of the pneumatic cylinder limits the performance of this device and reduces its reliability.

On the other hand, the use of a retainer that presses the free end of the wire to push the finished assembly out of the groove in the gear wheel requires a special device — a spring compensator — which also complicates the design of the device and the machine as a whole.

The aim of the invention is to increase the productivity of the device by providing cuts and pushing the wire out of the groove in the pinion gear in one straight stroke of the actuator, as well as simplifying the design.

This goal is achieved by the fact that on the shoulder of the U-shaped frame, which has a cutting edge, there is a supporting knife that can be moved along the shoulder and a locking device for them, while the locking device consists of a spring-loaded ball and a swivel bracket. In addition, the locking device and the supporting knife may have stops ..

FIG. 1 shows a general view of the proposed device (conveyor not shown); in fig. 2 - the same, left view; in fig. 3 - kinematic scheme in a cutting and cutting mechanism; in fig. 4 - to a hollow-cutting mechanism, general view (initial position); in fig. 5 - to a hollow cutting mechanism, general view (ejection position); in fig. 6 is a section BB of FIG. one; in fig. 7 is a view A of FIG. 4; on. FIG. 8 - section bb FIG. four.

All working parts of the device are placed on the trolley 1 rolling out along the rails of the transport-packaging line where the folding conveyors 2 are embedded.

On the cart mounted U-shaped carrier rack. 3 with the unit 4 wire feed unwinding drift 5 and wiring 6; electric motor 7 of the feed unit; pneumatic cylinders 8 and 9 with clamping yoke 10 supported on them; in the milling-cutting mechanism 11 and the electromagnetic pneumatic distributors 12.

Consumable coil 13 of the wire is installed on a separate trolley 14 to simplify the maintenance of the device.

The wiring is made in the form of an oval channel that has, in all but

the lower rectilinear section 15, C-shaped section. In the section 15 of the inlet 16 and the outlet 17, the channels are parallel and have a common exit upward through the groove 18,

located in the gap between the conveyors.

The cutting-cutting mechanism contains fixtures for fixing, cutting, twisting the wire and pushing the finished assembly. In the gear cog 19 with a longitudinal gap 2.0 is driven into rotation from the pneumatic cylinder 21 through the rack 22 and increasing 23 transmission. The stroke of the cylinder corresponds to 3.25 turns in the gear wheel.

Device for wire cut and

5, the ejection of the finished unit is also made in the form of a U-shaped frame, the parallel arms of which are the rods 24 and 25 located on either side of the gear wheel 19. The rod 24 contains a pusher 26 rigidly connected to it, and the rod 25 consists of two parts - a knife-pusher 27, having a cutting edge for cutting the wire, and a supporting knife 28, interconnected by a locking locking device 29, with

In this way, the supporting blade 28 is mounted for movement along the bar 25.

The rods 24 and 25, which are rigidly interconnected, are connected to the double-arm lever 30, which swings under the action of the pneumatic pneumocolimber 31. Both rods move in the guides 32. The cutting mechanism includes stops 33 and 34, which serve to fix the support knife 28 in the position of binding and unlocking the locking device.

The locking locking device consists of a housing 35, made in the form of a sleeve, rigidly fastened to the supporting knife, having an opening in which the ball 36 and spring 37 are installed, as well as a restrictive bracket 38 hingedly mounted in the groove 39 of the pushing knife. Under the action of the spring 37, the ball 36 is installed in the plane of contact of the knife-pusher and the supporting knife. it

the position of the ball is fixed by the restriction bracket 38 by means of an axis 40 located in the groove of the restrictive bracket.

The force of pressing the ball with the spring 37 into the socket 41 of the knife-pusher 27 is adjusted with

using screw 42.

The fixture for fixing the wire contains a clamp 43 mounted on the pneumatic cylinder brush 44. The reciprocating movement of the rod of the pneumatic cylinder with a clamp fixed on it is carried out in the guides 45.

The device operates in automatic mode by commands of the cam program mechanism and limit switches (not shown in the drawings). Wire 6 is supplied to the harness 6, the length of which is regulated by the time of operation of the engine 7 of the wire feed unit 4. Proceed by conveyor 2, a pulp bale acts on a limit switch, the activation of which serves as a signal to start an automatic binding cycle. The air supply to the lower cavity of the pivot cylinder 44 is turned on. Raising it all the way, the locking device 43 leads the end of the wire into the groove 20 in the ring gear 19. Simultaneously, the presser is lowered onto the pin. traverse 10. In the upper position, the latch 43 acts on the limit switch that controls the pneumatic cylinder 31 for adjusting the cutting and pushing of the wire. The pneumatic cylinder rod 31 is extended and the rigidly connected rods 24 and 25 are mixed until the supporting knife 28, which is connected to the knife-pusher 27 with a locking locking device 29, reaches the stop 33 and stops. At the same time, another stop 34 acts on the restrictive bracket 38 of the locking device, the bracket enters the groove 39 of the knife-pusher 27, acts on the ball 36 and opens the locking device, as a result of which the rigid connection between the supporting knife 28 and the knife-pusher 27 is broken. The stopping knife passes under the clamped end of the wire. Simultaneously with the stop of the supporting knife in the tie-in position, the limit switch is released, which blows air from the cylinder 31 and turns on the drive of the supply unit in the direction of inlet. When tapping, the wire is selected from wiring 6 and covers the pile. In this case, the lower branch of the trim, having passed through the groove 18, enters the groove 20 in the gear gear 19 and presses down to the neck of the supporting knife 28 and the retainer 43. The adjustment is completed by a signal from the control device that simultaneously switches on the pneumatic cylinder 21 in the gear gear and bleed air from the lower cavity of the pneumatic cylinder 44. 7 6 After twisting the groove in the ring gear us-. horizontally. Then, the pneumatic cylinder 31 extends further, the pusher knife 27 mixes with respect to the fixed support knife 28, cuts the wire and, together with the pusher 26, pushes it out of the groove into the ring gear. At the end of the stroke, the end switch is activated, which switches the air supply, and all working elements return to their original position. The wire is refilled, and the conveyor moves the pile under the second linkage. Thus, the proposed objectified; The device provides for cutting and pushing the wire out of the groove in the pinion gear for one straight working stroke of the pneumatic rod, which allows to improve the performance of this device in comparison with the prototype, as well as to simplify its design. Form 1. Inventions 1. A wire wrapping device containing movable U-shaped frame and gear for twisting wire installed between the arms of the frame, one of which has a cutting edge, for cutting and pushing out the wire that is different that, in order to increase productivity, on the shoulder of the U-shaped frame, which has a cutting edge, a supporting blade is installed with the possibility of movement along the shoulder and a stopper device for them. 2. The device according to claim 1, of which there are so that the locking device and the supporting knife have stops. 3. The device according to claim 1, of which it is necessary that the locking device consists of a spring-loaded ball and a rotating bracket. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 550317, cl. B 65 B 13/04, 1975.

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Claims (3)

Claim 1. A device for tying wire products containing a movable U-shaped frame and gear for twisting the wire installed between the shoulders of the frame, one of which has a cutting edge, for cutting and pushing the wire, characterized in that, in order to increase productivity, a shoulder of a U-shaped frame having a cutting edge, a support knife is mounted with the ability to move along the shoulder and a locking device for them. 2. The device according to π. 1, due to the fact that the locking device and the supporting knife have stops. 3. The device according to π. 1, characterized in that the locking device consists of a spring ball and a rotary bracket.