RU2752990C1 - Apparatus and method for packaging large-sized products in film - Google Patents

Abstract

FIELD: packaging.

SUBSTANCE: invention relates to a new apparatus and method for individual or group packaging of products of medium and large dimensions in a film. The apparatus for packaging large-sized products in a film is comprised of a supplying conveyor, a packaging module, a module for sealing longitudinal seams, and a removal conveyor, wherein the module for sealing longitudinal seams is comprised of a conveyor, two film sealers, a frame, and an electrical cabinet, the conveyor is made extendable and consists of three conveyors - a central one, rigidly fixed along the axis of the apparatus, and two movable side ones, rails and a steering wheel, each film sealer is comprised of a plate, a grip, a sealing unit, a pulling unit, a reducer motor, wherein the grip comprises an upper and a lower group of pulleys connected by belts, shafts, levers, hinges, pneumatic cylinders, the pulling unit comprises an upper and a lower group of pulleys connected by belts, an upper and a lower reeling rollers, shafts. The packaging module is comprised of a stand frame, an upper film unreeling unit, a lower film unreeling unit, a welding unit, and a control panel. The sealing unit comprises upper and lower groups of rollers connected by belts with a teflon coating, an upper and a lower heating elements, an upper and a lower pressing rollers, an upper and a lower cooling elements. The method for packaging large-sized products in a film includes four stages, the first stage includes supplying the product by the supplying conveyor to the packaging module, the second stage includes wrapping the product in the packaging module in a film, the third stage includes sealing the longitudinal seams of a film half-sleeve of the product in the module for sealing longitudinal seams, the fourth stage includes removing the packaged product by the removal conveyor, wherein the third stage includes gripping the longitudinal edges of the half-sleeve with the grips of the sealers, welding the seams in the sealing units and compacting the seams with the reeling rollers in the pulling units, wherein the height of the sealers relative to the conveyor of the module for sealing longitudinal seams is adjusted using screws, and the width of the conveyor is adjusted using the steering wheel by expanding the movable side conveyors along the rails relative to the central conveyor.

EFFECT: new apparatus and method for individual or group packaging of products of medium and large dimensions in a film.

11 cl, 5 dwg

Description

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

Packaging in a film is designed to ensure the safety of products during storage and transportation, to protect against weather conditions, high humidity, bacteria penetration, mechanical damage and pollution, dust, sand and water.

State of the art.

Currently, based on the prior art, there are and are used in industrial production of various types of devices, automatic and semiautomatic devices, for packaging food or non-food products, medium and large sizes in a film, differing in design features, depending on the type and size of products.

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

Known similar in modular composition lines for packaging products in a 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 units for unwinding a film, elements of automatic control of the line operation, a product shaper module in bags and pneumatic drive of the line, devices for fixing the packaging unit, automatic film winders.

Similar in some technical and design solutions to the claimed one, as well as the method of modular product advancement and sealing of the transverse seams of the package, the following known devices can be considered:

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

The device according to the patent RU 111104, PACKING MODULE FOR PACKING PRODUCTS INTO FILM, contains a frame on which the upper and lower rolls of film are installed, movably mounted on the frame of the thermal knife 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 the module frame is joined by a feeding conveyor located on one straight line passing through the longitudinal axis of the packaging module.

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

Close to the device of a film sealer is a Device for heat sealing of a plastic film according to patent RU 2603661, in which the plastic film is fed in the longitudinal direction and includes opposite portions of the side edges that overlap and are heat sealed 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 and opposite each other; a plurality of suction holes formed in each of the heating surfaces; a duct formed in each of the heaters and communicating with the suction holes for sucking air therein to attract the side edge portions thereto and bring them into contact with the heating surfaces, with a gap 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 portions, so that the side edge portions, after being preheated, are located between the pressure rollers, being heat-welded together.

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 close technical solutions of the devices are characterized only by a similar modular composition and separate similar structural elements of working units, namely, a packing unit with a transverse seam welding unit and a longitudinal packing seam sealer.

The claimed technical solution is a new complex modular solution of the device with an optimal set of functional modules, with new and improved working units, allowing for a full cycle of automatic packaging of medium and large products in film.

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

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

The task to be solved by the claimed invention is to create a device and a method for its operation, which allows achieving the following technical results:

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

- continuity of the packaging process;

- versatility;

- the possibility of completing with various industrial production lines.

Disclosure of invention

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

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

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

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

The device contains a feeding conveyor, a packing module, a module for sealing longitudinal seams, and an outgoing conveyor.

The feeding conveyor is made in the form of a belt conveyor, with one conveyor belt wide enough to easily accommodate large-sized items.

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

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

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

The welding unit contains a welding head consisting of welding jaws, guides, a support, a beam, a pillow, blocking system sensors, and a pneumatic cylinder. The welding jaws are attached to the support, the support is attached to the beam, which is moved by the pneumatic cylinder along the guides. A heating element is fixed inside each welding jaw. The welding jaws are closed from the outside by guards. A slot for a knife runs along the welding jaws. Under the welding jaws, on the frame of the packaging module, a pillow is attached, made in the form of rubber plates placed in a metal profile and wrapped in varnished cloth.

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

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

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

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

Depending on the width of the products being packed, the side conveyors are manually moved along the rails using the handwheel 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 broaching unit, a fan, a motor reducer. Designed for welding longitudinal packaging seams.

With the help of screws, the height of the sealers is adjusted relative to the sliding conveyor.

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

Each pulley group contains at least two pulleys.

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

The gripper is designed to grip, connect the upper and lower packaging films and feed them to the sealing unit.

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

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

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 monitored with at least one thermocouple.

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

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

The broaching unit is intended for pulling / accompanying the package further to the outgoing conveyor.

In addition, with the help of rolling rollers in the area of the broach 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 roller surface to the film.

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

The outfeed conveyor is also made in the form of a belt conveyor, with a conveyor belt wide enough to easily move the products packed in film 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 a packaging module;

in FIG. 3 shows the welding unit;

in FIG. 4 shows the module for sealing longitudinal seams, general view;

in FIG. 5 shows a sealing machine.

Implementation of the invention

According to the figures, the device for packaging large-sized products into the film contains a feeding conveyor 1, a packaging module 2, a module for sealing longitudinal seams 3, a discharge conveyor 4.

Referring to FIG. 1 The conveyor belt 5 of the feeding conveyor 1 is made wide to accommodate the oversized 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, from above and below, in the direction of travel, with a film, forming a half-sleeve, with a welded seam from one end. The half-hose is formed by films supplied from rolls from the units of the upper 6 and lower unwinding 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 from the other end of the package.

When the welding jaws 9 move downward, the first touch the film is the protections of the jaws 10, preferably made on spring-loaded supports 11, which press the film, then the welding 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 - the knife 12 cuts the film along the seam and separates the semi-wrapped product. Under the welding jaws 9 on the frame 13 of the packaging module 2, a pillow 14 is attached, made in the form of rubber plates placed in a metal profile and wrapped in varnished cloth.

On the support of the protection of the welding jaws 15, sensors of the locking system 16 are attached against the ingress of foreign objects under the welding jaws 9.

The product, wrapped and packed from 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 starting the operation of the device, depending on the width of the packaged product, the width of the sliding conveyor 17 is adjusted by bringing the side conveyors 18 closer or apart, relative to the central stationary conveyor 19. The adjustment is made manually, using the handwheel 20, by moving the side conveyors 18 along the rails 21 mounted on the frame 22.

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

When moving the product onto the conveyor 17 of the module for sealing longitudinal seams 3, the side edges of the packaging of the product fall into the sealing machines 23 installed on the movable side conveyors 18.

As shown in FIG. 5, the lateral edges of the package first enter the grippers 24, which make a corresponding "gripping" movement. The ends of the grippers 24 move apart, pass the edges of the package, and, when connected, squeeze them and, by means of belts 25, pull them to the sealing unit 26.

The edges are passed between the Teflon tapes 27 of the sealing unit 26. It is preferable to use in the operation of the sealing device 23 tapes made of a material with good non-stick characteristics.

Heating elements 28 heat the films through Teflon tapes 27, and pressure rollers 29 compress the heated films until a welded seam is formed. At the moment of stopping the broaching of the seam, the heating elements 28 are retracted.

Further, 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, as a result of the resulting seam.

The upper 32 and lower 33 groups of pulleys of the pulling unit 34, connected by belts 35, remove the package from the sealing unit 26. The rolling rollers 36 seal the welded seam, give it a relief.

Next, the packed product is taken to the unloading area by the discharge conveyor 4.

Thus, using the modular composition of the working units of the device, characterized by new advantageous distinguishing features, the claimed method of operation of the device is new, effective and optimal.

The claimed device and method of packaging realizes the stated task.

The versatility of the device manifests itself in the possibility of packaging both medium and large, including elongated products and the possibility of complementing the modular design of the device with other modules, for example, a module for a shrink chamber, etc.

The machine is controlled by a control panel with a control panel.

The electrical cabinet provides placement of network and electronic equipment in it.

The claimed technical solution of the device and the method of its operation are new and eliminate the disadvantages existing in the technical solutions of devices and assemblies available today and, in addition, is 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 works is unique and simple.

The device can be easily assembled and disassembled for disinfecting treatment and transportation, thanks to its modular design and easily manufactured in a serial industrial production.

Claims (11)

1. A device for packaging large-sized products in a film, containing a feeding conveyor, a packing module, a module for sealing longitudinal seams, a discharge 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 sliding and consists of of three conveyors, a central device fixed along the axis, and two movable lateral ones, mounted on rails mounted on a frame, and a steering wheel, the sealers are made with the possibility of adjusting their height relative to the conveyor, each film sealer contains a plate, a gripper, a sealing unit, a block broaches, a gear motor, while the gripper contains an upper and lower group of pulleys connected by belts, shafts, levers, hinges, pneumatic cylinders, a pulling unit contains an upper and lower group of pulleys connected by belts, upper and lower rolling rollers, shafts. 2. A device for packaging large-sized products in a film according to claim 1, characterized in that the supply conveyor and the outlet conveyor are made in the form of a belt conveyor with a wide conveyor belt. 3. A device for packing large-sized products into a 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 packing large-sized products into a film according to claim 1, characterized in that the film sealers are located on movable side conveyors. 5. A device for packaging large-sized products in a film according to claim 1, characterized in that each grip is made sliding at one end. 6. A device for packaging large-sized products in a film according to claim 1, characterized in that the sealing unit contains the 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 large-sized products in a film according to claim 6, characterized in that the upper heating and cooling elements are made on spring-loaded supports. 8. A device for packaging large-sized products in a film according to claim 6, characterized in that the cooling elements are made with through holes. 9. A device for packaging large-sized products in a film according to claim 6, characterized in that the pressure rollers are located between the heating and cooling elements. 10. A device for packing large-sized products into a film according to claim 6, characterized in that the upper rolling roller is made with mesh corrugation to give the welded seam a relief, the lower rolling roller is made with a rubber coating for better adhesion of the roller surface to the film. 11. A method of packaging large-sized products in a film, including four stages, the first stage includes feeding the product by the feeding conveyor to the packaging module, the second stage includes wrapping the product in the packaging module into a film fed from rolls from the upper and lower unwinding units with the formation of a half-sleeve with welded transverse seams, the third stage includes sealing the longitudinal seams of the film half-sleeve of the product in the module for sealing the longitudinal seams, the fourth stage includes the removal of the packaged product by the discharge conveyor, characterized in that the third stage includes gripping the longitudinal edges of the half-sleeve with the grippers of the sealers, welding the seams in the sealing blocks and sealing the seams with rolling rollers in the broaching units, with the help of screws the height of the sealers is adjusted relative to the conveyor of the longitudinal seam sealing module, and with the help of the steering wheel, by moving the movable side conveyors along the rails relative to the central conveyor, the width of the conveyor is adjusted.

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