RU58499U1 - DEVICE FOR PRINTING PACKAGES - Google Patents

Abstract

The utility model relates to packaging technology. It is used in the form of a functional unit built into automatic machines for the manufacture, filling and sealing of film bags. The technical task is to increase performance, simplify the design. The device comprises a frame with tubular guides 3, 4, on which opposite beams 5, 6 are installed with thermo-jaws 7, 8. The pneumatic cylinders 13, 12 are fixed on the frame to ensure counter-return movement of the beams. In the sponge 8, a retractable knife 9 is installed, equipped with an individual pneumatic actuator 11. In the sponge 7 there is a groove for the knife. During operation, the machine rolls an endless pipe from the film, which is pulled through the frame. The dispenser above the frame periodically pours a dose of the product into the pipe. When the pneumatic cylinders are periodically turned on, the beams converge in the center, the thermo-sponges weld the film, the knife cuts off the sealed bag with the product. 3 points, 1 ill.

Description

The utility model proposed for patenting relates to packaging technology, specifically, to devices that are built-in as a functional unit in automatic machines for packing bulk products into bags of heat-adhesive film.

A device for packaging products is known, including a lever mechanism for sealing bags equipped with welding plates (see RF patent No. 2241616, 2004). The disadvantages of the device include a low speed.

Also known is a packaging machine for manufacturing, filling the product and sealing bags of heat-sealing material, in which the device for sealing packages contains a carriage with two lead screws equipped with an electric drive (see Russian patent No. 2165382, 2001, prototype). Each screw has one section with a right-hand thread and one section with a left-hand thread. Threaded bushings screwed in pairs by beams are screwed onto the sections. Welding jaws are fixed on the beams, while inside one of the jaws there is a retractable knife, and in the other there is a groove corresponding to the knife.

The disadvantages of the prototype include the low performance of the device for sealing packages. The problem is that the translational movement of the beams with welding jaws is provided by rotating the bushings relative to the screws, and the path along the helix is much longer than the axis of the screw. In addition, the electric drive of the screw mechanism is quite complicated and not always safe.

The technical task is to increase performance, simplify the design.

The technical result is achieved by the fact that in the device for sealing packages containing a carriage, welding jaws attached to

opposite movable beams associated with the drive of counter-return movement, moreover, a knife is fixed in one of the jaws, for which there is a reciprocal groove in the other jaw, the carriage is made in the form of a frame with guides on which the beams are mounted, the drive is made in the form of attached to opposite the sides of the frame of the pneumatic cylinders, the rods of which are connected with the beams, while the knife is equipped with a drive containing two additional pneumatic cylinders attached to the corresponding beam. The device is characterized in that the pneumatic cylinders are connected to a common pneumatic distributor. The device is also characterized in that the additional pneumatic cylinders are connected to the pneumatic distributor via a delay unit.

The essence of the utility model is illustrated by a drawing, which schematically shows a top view of the device (see also Appendix B: drawing of a machine with an integrated device - not for publication).

In an example of a specific embodiment, the device for sealing packages contains a frame having a front 1 and a rear 2 walls, to which tubular guides 3, 4 are attached. Supporting beams 5, 6 are movably mounted on the guides. Welding jaws 7, 8 (thermo-sponges) are fixed on the beams, which consist of a pair of heating sections, between which there is a gap. Between the sections of the jaw 8 is placed a knife 9, which is attached to the rods 10 of the additional pneumatic cylinders 11 (for clarity, the knife is shown in the extended position).

The pneumatic cylinders 11 are mounted on the beam 6. The pneumatic cylinder 12 is attached to the wall 2 of the frame. The pneumatic cylinder 13 is attached to the opposite wall 1. To the rods 14 of the pneumatic cylinders 12, 13 are opposed beams 5, 6. The gap between the sections of the jaw 7 (not shown) corresponds to the knife 9. The pneumatic cylinders 12, 13 are connected to a common pneumatic distributor immediately (not shown). Additional pneumatic cylinders 11 are connected to the pneumatic distributor through a delay unit (not shown).

The device operates as part of a packaging machine, which is supplied with a roll of thermo-adhesive film. The movement of the film is synchronized with the operation of the dispenser mounted on the device (see the appendix). In the initial position (at the beginning of the cycle), with the cylinder rods retracted, the beams with thermo-sponges are separated to the opposite walls, the knife is recessed in the thermo-sponge 8.

First, a button is pressed on the control panel of the machine to heat the welding jaws 7, 8 to the welding temperature of this film. The machine unwinds the film from a roll and folds it into a pipe, which then passes through the frame between the thermo-sponges 7, 8. At the same time, the film moves so that its edges in the area under the dispenser do not converge, forming a gap for filling the product.

After heating the jaws, the pneumatic distributor is turned on, which supplies compressed air to the cylinders 12, 13. The rods 14 sharply extend, the beams quickly rush to the center of the frame one against the other. In this case, between the heated jaws 7, 8 the end of the pipe from the film is clamped, which is almost immediately welded. (It should be noted that two airtight seams are formed on the film, between which there is a gap). Then, the valve of the delay assembly (not shown) opens and the compressed air enters the cylinders 11 mounted on the beam 6. The rods 10 sharply extend with the knife 9, which penetrates into the gap between the seams and separates the lower seam from the upper one. After that, the air distributor switches the air pressure in the cylinders to retract the rods. The rods 10, being pulled into the cylinders 11, hide the knife between the sections of the jaws 8, the rods 14 spread the beams 5, 6 with thermo-sponges in opposite directions, freeing the center of the frame, the cut seam falls into the receiver.

Then another piece of film is pulled from the roll. In this case, the sealed end of the pipe falls under the frame to a depth equal to the height of the package. The dispenser pours a dose of the product into the gap between the edges of the film, which wakes up and accumulates at the bottom of the pipe below the plane

framework. After that, the air distributor switches on again. The pneumatic cylinders are triggered, the thermo-sponges close on the film and weld it. After cutting the film in the gap between the seams, the upper seam becomes the bottom of the next bag, and the bottom seals the neck of the bag with the product. After the divergence of the beams 5, 6, the packet falls into the receiver. The machine rewinds a piece of film again and the cycle repeats.

The speed of the proposed device exceeds the speed of the prototype 3-4 times. The achieved result is ensured by the fact that the drive parts of the device move only in straight lines. In addition, tubular guides are simpler to manufacture drive screws, and the pneumatic drive is more convenient and safer than the electric drive.

According to the scheme described above, the company “VKP Signal-Pack” LLC (Yekaterinburg) made a prototype device for sealing bags. Tests showed a good result. With appropriate cataloging, the device can be manufactured and delivered on its own to complete a variety of automatic machines for packaging a variety of (and not just bulk) products.

Given the above, the device is proposed as an independent product for patenting as a utility model.

Claims (3)

1. A device for sealing packages containing a carriage, welding jaws mounted on opposite movable beams having a drive of counter-return movement, moreover, in one of the jaws a knife is fixed, for which there is a reciprocal groove in the other jaw, characterized in that the carriage is made in in the form of a frame with guides on which the beams are mounted, the drive is made in the form of pneumatic cylinders attached to the opposite sides of the frame, the rods of which are connected with the beams, while the knife is equipped with a drive containing two additional x a pneumatic cylinder attached to the corresponding girder. 2. The device according to claim 1, characterized in that the pneumatic cylinders are connected to a common pneumatic distributor. 3. The device according to any one of claims 1 and 2, characterized in that the additional pneumatic cylinders are connected to the pneumatic distributor through a delay unit.