EA043177B1 - DEVICE AND METHOD OF PACKAGING SIZE PRODUCTS IN FILM - Google Patents

Description

The invention relates to a new device and method for individual or group packaging of a wide range of products, medium and large in size, in film.

Film packaging is designed to ensure the safety of products during storage and transportation, to protect them from atmospheric conditions, high humidity, the penetration of bacteria, mechanical damage and contamination, dust, sand and water.

State of the art

Currently, based on the level of technology, various types of devices, automatic and semi-automatic, exist and are used in industrial production for packaging food or non-food products, medium and large sizes, in film, differing in design features, depending on the type and size of the products.

The applicant, after studying this field of technology, does not have knowledge of the current existence of a similar device with a similar method, which is carried out in the claimed device.

There are known similar modular composition lines for packaging products in shrink film, each of which contains, in addition to the shrink module, a packaging module, inlet and outlet conveyors, a film welding unit, upper and lower film unwinding units, automatic line operation control elements, and a product former module in bags and pneumatic drive of the line, devices for fixing the packaging block, automatic film rewinders.

The following known devices can be considered close in some technical and design solutions to the claimed one, as well as in the method of modular promotion of the product and sealing the transverse seams of the packaging.

The device according to patent RU 120399 contains a sequentially located packaging module, a conveyor with a heat chamber installed above it and a receiving roller conveyor, while the packaging module includes a vertically located rectangular frame on which a thermal knife is mounted with the ability to move along vertical posts, and also fixed to the frame table, clamp and upper and lower film unwinding units, with a stop for the thermal knife, a pusher and limiters for centering the block of products installed on the table. According to the utility model, the upper horizontal beam of the frame is formed by an upper unwinding unit connecting the upper ends of the vertical frame posts of the packaging module, while the thermal knife guides are made in the form of rods running along the entire length of the vertical frame posts and secured with their lower ends to the lower horizontal frame beam, and with their upper ends - on the upper unwinding unit. The thermal knife is mounted on a frame installed with the ability to slide along the rods.

The device according to patent RU 111104, a packaging module for packaging products in film, contains a frame on which the upper and lower rolls of film are installed, a thermal knife movably mounted on the frame of the module, which is located above the stop of the thermal knife with the possibility of their contact and welding the film at the point of contact, to A feeding conveyor is attached to the module frame, located on one straight line passing through the longitudinal axis of the packaging module.

The closest analogue of a film sealer, which is one of the working units of the module for sealing longitudinal seams of the claimed device, is the device according to the patent CN207791345, Film bag sealer. The claimed device differs from its analogue by the presence in the film sealer of a capture unit and a drawing unit with additional rolling rollers, and the heating and cooling elements are mounted on spring-loaded supports.

Close to the device of the film sealer is the Device for heat sealing of plastic film according to patent RU 2603661, in which the plastic film is fed in the longitudinal direction and includes opposite sections of the side edges, which overlap each other and are heat welded in the longitudinal direction, while the device comprises: a pair of heaters located on opposite sides of the side edge portions and having heating surfaces for preheating the side edge portions, the heating surfaces being spaced apart from and opposite each other; a plurality of suction holes formed in each of the heating surfaces; a channel formed in each of the heaters and communicating with the suction openings for sucking air therein to attract the side edge portions thereto and bring them into contact with the heating surfaces, a gap being provided between the side edge portions to prevent contact therebetween; and a pair of pressure rollers located downstream of the heaters on opposite sides of the side edge sections, so that the side edge sections, after preheating, are located between the pressure rollers, being connected to each other by heat welding.

Among other differences, the claimed device is distinguished by the presence in the sealer of cooling, rather than heating, elements with through holes.

The found similar technical solutions of the devices are characterized only by the similar presence of a modular composition and individual similar structural elements of working units, namely a packaging unit with a unit for welding transverse seams and a sealer for longitudinal seams of packaging.

The claimed technical solution is a new comprehensive modular device solution with an optimal set of functional modules, with new and improved working units,

- 1 043177 allows for a full cycle of automatic packaging of medium- and large-sized products in film.

The found devices do not achieve the technical results of the claimed device.

Thus, there is an industrial need for a device and method for packaging large products in film.

The problem to be solved by the claimed invention is the creation of a device and a method of its operation that allows achieving the following technical results:

design optimization, namely the optimal number of modules, technical design of modules and working units of the device for packaging dimensional products in film;

continuity of the packaging process;

versatility;

Possibility of combination with various industrial production lines.

Disclosure of the Invention

The device and method for packaging large-sized products in film are intended for packaging an assortment of medium-sized and large-sized products in film.

The operation of the device is controlled and adjusted by a control panel with a control panel.

The device itself is a modular line with the ability to be equipped with additional modules of the production line, both before and after operation of the device, for example, such as a shrink chamber.

Simplicity and optimization of the device design is ensured by the optimal number and arrangement of functional modules.

The device contains a feed conveyor, a packaging module, a longitudinal seam sealing module, and an outflow conveyor.

The feeding conveyor is made in the form of a belt conveyor, with one transport belt wide enough to easily accommodate large dimensional products.

The packaging module contains a frame and an upper film unwinding unit, a lower film unwinding unit, a welding unit, and a control panel located on it. Designed for wrapping products coming from the feeding conveyor in film.

The film roll upper unwinding unit is located in the upper part of the frame and consists of a drive shaft with a gear motor, a support roller, a rocker and an additional roller. The film roll is installed on the drive shaft and support roller, and is fixed in width using stops located on the roller.

The lower roll unwinding unit is located at the bottom of the frame. The design and operation of the unit is similar to the upper roll unwinding unit.

The welding unit contains a welding head consisting of welding jaws, guides, a support, a beam, a cushion, locking system sensors, and a pneumatic cylinder. The welding jaws are mounted on a support; the support is mounted on a beam, which is moved by a pneumatic cylinder along guides. A heating element is fixed inside each welding jaw. The welding jaws are covered on the outer sides with guards. There is a groove for the knife running along the welding jaws. Under the welding jaws, a cushion made in the form of rubber plates placed in a metal profile and wrapped in varnished cloth is attached to the frame of the packaging module.

The welding unit ensures welding of the transverse seams of the package and separation of one package from another.

The module for sealing longitudinal seams contains a sliding conveyor, two film sealers, a frame, and an electrical cabinet.

Designed for welding longitudinal seams of packaging and subsequent transportation to the outfeed conveyor.

The sliding conveyor consists of three belt conveyors, a central one and two moving side ones, a rail and a steering wheel. The central conveyor is fixedly fixed along the axis of the machine, and two movable side conveyors are located on rails and their movement is controlled by a steering wheel.

Depending on the width of the packaged products, the side conveyors are manually moved along the rails using a steering wheel, and their position relative to the central conveyor is set.

Film sealers are attached to the movable side conveyors.

The film sealer contains a plate, a gripper, a sealing unit, a drawing unit, a fan, and a gear motor. Designed for welding longitudinal seams of packaging.

The height of the sealers relative to the sliding conveyor is adjusted using screws.

The gripper contains an upper and lower group of pulleys connected by belts, shafts, levers, hinges, and pneumatic cylinders.

Each pulley group contains at least two pulleys.

The pulleys are connected through shafts to levers, the movement of which is controlled by pneumatic cylinders through hinges.

- 2 043177

The gripper is designed to grip, connect the top and bottom films of the package and feed them to the sealing unit.

The sealing unit consists of an upper and lower group of rollers connected by Teflon-coated tapes, upper and lower heating elements, upper and lower pressure rollers, and upper and lower cooling elements.

The heating and cooling elements are mounted on the plate on spring-loaded supports to prevent jamming when wrinkles form on the film.

The cooling elements are made with through holes for faster and more functional cooling of the elements and the welded seam.

The temperature of the heating elements is controlled using at least one thermocouple.

Pressure rollers, upper and lower, are located between the heating and cooling elements. Designed for fixing and compressing heated films until a welded seam is formed.

The broaching unit contains an upper and lower group of pulleys connected by belts, upper and lower rolling rollers, and shafts.

The pulling unit is designed to pull/follow the package further onto the outfeed conveyor.

In addition, with the help of rolling rollers in the area of the broaching block, the welded seam is strengthened.

The upper rolling roller is made with mesh corrugation to give the weld a relief, the lower rolling roller is made with a rubber coating for better adhesion of the surface of the roller and the film.

The movement of all elements of the sealer is controlled by a gear motor using belt and gear drives.

The outfeed conveyor is also made in the form of a belt conveyor, with a transport belt wide enough to easily move film-packed products to the unloading point.

Brief description of drawings

The invention is illustrated by drawings, where:

in fig. 1 shows a general view of the device;

in fig. 2 shows the packaging module;

in fig. 3 shows the welding unit;

in fig. Figure 4 shows a general view of the module for sealing longitudinal seams;

in fig. 5 shows a sealer.

Carrying out the invention

According to the drawings, the device for packaging dimensional products in film contains a feed conveyor 1, a packaging module 2, a longitudinal seam sealing module 3, and an outflow conveyor 4.

According to FIG. 1 transport belt 5 of the feeding conveyor 1 is made wide to accommodate a large product and move it to the packaging module 2.

From the feeding conveyor 1, the product goes to the packaging module 2 (Fig. 2), where the product is wrapped, top and bottom, in the direction of travel, with film, forming a half-sleeve with a welded seam at one end. The half-sleeve is formed by films fed from rolls from the upper 6 and lower unwinding units 7, connected by a welded seam in the welding unit 8 (Fig. 3).

At the exit of the product from the packaging module 2, the welding jaws 9 form a welded seam at the other end of the package.

When the sealing jaws 9 move downwards, the first to touch the film are the guards of the jaws 10, preferably made on spring-loaded supports 11, which press the film, then the sealing jaws 9 themselves touch the film, which weld it, forming two transverse seams, the second transverse seam of the previous package and the first transverse seam , the next package, then knife 12 cuts the film along the weld seam and separates the semi-packed product. Under the welding jaws 9, on the frame 13 of the packaging module 2, a cushion 14 is attached, made in the form of rubber plates placed in a metal profile and wrapped in varnished fabric.

On the support of the welding jaw guard 15, sensors of the blocking system 16 are mounted to prevent foreign objects from getting under the welding jaws 9.

The product, wrapped and packaged on the top and bottom sides, enters the longitudinal seam sealing module 3.

A feature of the module for sealing longitudinal seams 3 (Fig. 4) is that before the device starts operating, depending on the width of the product being packaged, the width of the sliding conveyor 17 is adjusted by bringing the side conveyors 18 closer or apart, relative to the central fixed conveyor 19. The adjustment is made manually, using the steering wheel 20, by moving the side conveyors 18 along the rails 21 mounted on the frame 22.

Thanks to this feature, the versatility of the device is realized in relation to the range of products of medium and large dimensions.

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Claims (7)

When the product is moved to the conveyor 17 of the module for sealing longitudinal seams 3, the side edges of the product packaging fall into the sealers 23 installed on the movable side conveyors 18. As shown in FIG. 5, first the side edges of the package fall into the grippers 24, which perform a corresponding gripping movement. The ends of the grippers 24 move apart, pass the edges of the package, and, connecting, compress them and, through belts 25, pull them to the sealing unit 26. The edges are passed between Teflon tapes 27 of the sealing unit 26. It is preferable to use tapes made of material with good non-stick characteristics when operating the sealer 23. Heating elements 28 heat the films through Teflon tapes 27, and pressure rollers 29 compress the heated films until a welded seam is formed. When the seam drawing stops, the heating elements 28 are retracted. Next, the welded seam is cooled by cooling elements 30. The cooling elements have through holes 31 for faster and more functional cooling of the elements resulting in the resulting seam. The upper 32 and lower 33 group of pulleys of the broaching unit 34, connected by belts 35, remove the packaging from the sealing unit 26. Rolling rollers 36 compact the welded seam and give it relief. Next, the packaged product is taken to the unloading area by the outfeed conveyor 4. Thus, using the modular composition of the working units of the device, characterized by new advantageous distinguishing features, the proposed method of operation of the device is new, effective and optimal. The claimed device and packaging method implements the stated task. The versatility of the device is manifested in the possibility of packaging both medium and large, including elongated products, and the possibility of supplementing the modular design of the device with other modules, for example, a shrink chamber module, etc. The machine is controlled by a control panel with a control panel. The electrical cabinet provides placement of network and electronic equipment. The claimed technical solution of the device and the method of its operation are new and eliminate the shortcomings existing in the technical solutions of devices and components available today and, in addition, are simple and convenient, productive and versatile for continuous use in production. The design of the device is simple and straightforward, and the way the device operates is unique and simple. The device can be easily assembled and disassembled for disinfection and transportation, thanks to its modular design and can be easily manufactured in serial industrial production. CLAIM 1. A device for packaging dimensional products in film, containing a feeding conveyor, a packaging module, a module for sealing longitudinal seams, an outgoing conveyor, characterized in that the module for sealing longitudinal seams contains a conveyor, two film sealers, a frame, an electrical cabinet, while the conveyor is made sliding and consists of three conveyors, a central one, fixedly fixed along the axis of the device, and two movable side ones, mounted on rails mounted on a frame, and a steering wheel, sealers are made with the ability to adjust their height relative to the conveyor, each film sealer contains a plate, a gripper, a sealing unit, a block broaches, a gear motor, wherein the gripper contains an upper and lower group of pulleys connected by belts, shafts, levers, hinges, pneumatic cylinders, the broaching unit contains an upper and lower group of pulleys connected by belts, upper and lower rolling rollers, shafts. 2. A device for packaging dimensional products in film according to claim 1, characterized in that the inlet conveyor and outflow conveyor are made in the form of a belt conveyor with a wide transport belt. 3. A device for packaging dimensional products in film according to claim 1, characterized in that the packaging module contains a frame, an upper film unwinding unit, a lower film unwinding unit, a welding unit, and a control panel. 4. A device for packaging dimensional products in film according to claim 1, characterized in that the film sealers are located on movable side conveyors. 5. A device for packaging dimensional products in film according to claim 1, characterized in that each gripper is sliding at one end. 6. A device for packaging dimensional products in film according to claim 1, characterized in that the sealing unit contains upper and lower groups of rollers connected by Teflon-coated tapes, upper and lower heating elements, upper and lower pressure rollers, upper and lower cooling elements. 7. A device for packaging dimensional products in film according to claim 6, characterized in that the upper heating and cooling elements are made on spring-loaded supports. -