SU1712249A1 - Device for packing piece items in thermoplastic material - Google Patents

Abstract

Jorete < Cie refers to machine building. namely, equipment for the packaging of cylindrical parts in thermoplastic material. The purpose of the invention is to increase productivity and reliability in operation. The device comprises a housing 1., a version 2 and a driven 3 shaft, connected between the sides and driven by gear wheels 4 with an equal number of teeth. Welding 6 and lifting 7 carriages are mounted on guide columns 5. On the last grooves are made 8. spaced perpendicular columns / columns 5. Rollers 9 are secured on wheels 4 and placed in grooves 8. The mechanism for forming seams includes a movable welding-cutting sponge 10. mounted for movement along a guide column 5 relative to the carriage 6. and the fixed sponge welding table L2. J4a sliding gear carriage 7 of the object feeder has a reinforced profile stop 13. which functions as a pusher and shut-off device. A spring-loaded roller 14 of the pusher is located in the area of the schvs. The device has tape roll holders 16 and support strips 17. The welding carriage 6 enters the weld zone only after the lifting carriage 7 has left it, and vice versa. 2 Il. #Slf //; 4yuIs ^ yu > &

Description

The invention relates to mechanical engineering, in particular to equipment for packaging cylindrical articles into thermoplastic material.

A device for packaging products into a film comprising a frame, a roll holder, a device for feeding products and a mechanism for pulling the film with a pair of grippers are known.

However, this device is characterized by the complexity of the film pulling mechanism and has a large number of independent drives, which leads to a decrease in reliability.

Closest to the present invention is a device for wrapping piece objects in a thermoplastic material comprising a roll holder, a mechanism for feeding objects, a mechanism for forming seams and a rotating clip for a film.

However, in the known device, the operation of supplying products to the welding and self-welding zone is carried out sequentially by independent drives, which leads to an overestimated working cycle, and also determines the complexity of the design and, as a result, the low reliability of the device. In addition, this arrangement causes difficulties in associating the device with mechanisms for loading it with blanks.

The purpose of the invention is to increase the production. water and reliability in operation.

Fig. 1 shows an apparatus for packaging piece objects into a thermoplastic material; figure 2 - view And figure 1.

The device includes a housing 1, in the bores of which the driving 2 and driven 3 shafts are installed. The shafts are interconnected and driven by means of gears 4 rigidly mounted on them with an equal number of teeth.

On the guide columns 5, the bodies are mounted for movement of the welding 6 and the lifting 7 of the carriage. On the lateral planes of the carriages 6 and 7 there are grooves 8 arranged perpendicular to the guide columns 5. On the gears 4 there are fixed rollers 9 placed in the slots 8 of carriages b and 7.

The mechanism for the formation of seams includes a movable welding-cutting sponge 10 with a heating element installed in the guide columns 11 of the welding carriage 6 with the ability to move along the guide column 5 relative to the carriage b, and the fixed sponge of the welding foot 12.

On the lifting carriage 7 of the object feeder, a profile support 13 is fixed, which acts as a pusher for the next billet and as a cutter.

for subsequent blanks on the loading tray. ,

Against the welding table 12 in the zone of formation of seams there is a spring-loaded roller 14 of the pusher in bearings.

0 lever 15 installed in the housing. Under the welding table 12 and above it are the roll holders 16 of the tape. In order to give the workpiece a certain and stable position when lifting from the loading tray to the welding zone, the guide columns 5 of the carriage 7 are installed at a slight angle to the vertical, and the support strips 17 are placed on the body 1.

The device works as follows.

The drive shaft 2 is driven from an electric motor (not shown) through -. The chain drive and sprocket. Through the gears 4, the rotation is transmitted to the driven shaft 3. Rotating, the gears 4 with their rollers 9 communicate movement to the carriages 6 and 7. Since the number of teeth in both gears 4 is the same, the period of reciprocating movements of both

0 carriages are the same. The gears 4 are engaged in the engagement so as to give the rollers 9 a relative position providing the movement of the carriages with the necessary phase shift. in this case, the welding carriage 6 should enter the seam formation zone only after the lifting carriage 7 has left it, and vice versa.

Pick up the phase shift in the movement of the carriages, as well as the magnitude of their progress, can

0 to ensure the maximum combination in time of their idle strokes, i.e. one working body occupies the working area as soon as it leaves the other. As a result, the maximum industrial efficiency of the mechanism is achieved, and taking into account the fact that all movements are performed from a single electric drive operating in a continuous and non-reversible mode, the work reliability is also enhanced.

0 When the lifting carriage 7 moves downward, the supporting platform of the profile stop 13 is below the plane of the loading tray, while the next workpiece rolls down onto the supporting platform of the carriage, and the subsequent ones are displaced by a step. As the carriage 7 moves upward, the next blank is fed into the packing zone, and the subsequent ones are clipped by the side surface of the profile stop. A film is fed across the transport corridor from the roll holders 16.

Lift up, the product is wrapped with a film on half of its lateral nosepxwp. When approaching the extreme upper position, the workpiece presses the roller t4 of the pusher, which, turning, rolls on the lateral surface of the workpiece, wrapping it with a film. At the same time, due to the lateral pressure of the roller 14, the pusher against the workpiece finally collides with the supporting platform onto the welding table 12, where it is held on one side by a film loop, and on the other by a roller 14tol. Reaching its upper position, the carriage 7 begins to descend: and the welding carriage b is introduced into the zone of formation of seams and with its welding-sponge 10 it seals the machine and oTpessky the formed bag.

When a subsequent workpiece is made from it, the welding table, it abuts against the previous one, pushes it onto the output tray, from where it is transferred by an adjacent vehicle to the heat-shrinking furnace IV. shown).

Continuous hold time of closed-jaw jaws in closed state is despreading at the expense of the spring-loaded move of the moving welding jaws 10 J6i with respect to the welding carriage b.

The proposed kinematic scheme allows, with a small 1 ”and 1 sponge relative to the carriage 6 (pores E |; k 1/7 of its total stroke), to divert a considerable time from the common welding cycle (1/4 of the total cycle time). In addition, it allows the actuators (carriages) to smoothly vary the speed from zero in the initial position to the maximum along the path and smoothly decelerate to zero when approaching the zone of seam formation without using any additional means, which is important for high performance.

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Claims (1)

The invention of the device for packing piece objects in a thermoplastic material containing ore holders, a mechanism for the formation of seams with welding sponge, fur) 4ism of supplying objects, including a pusher drive, which is so that, in order to increase productivity and reliability in operation, mechanisms for the formation of seams and the supply of objects include reinforced on guides carriages in which is made in a groove located perpendicular to the guides, and gears with in equal numbers with each other and with a drive, while the pusher is from spring roller, p1-positioned in 3 (the formation of seams, and the profile stop. the latter is fixed on one of the carriages, The sponge-cutter sponge is mounted on another carriage so that it can move along the guide relative to the carriage, and a roller is mounted on each gear wheel, which is placed in the corresponding carriage PAA.