RU111102U1 - LINE FOR PACKING PRODUCTS IN HEAT SHRINKING FILM - Google Patents

Abstract

 1. A line for packaging products in shrink film, characterized in that it contains a packaging module, on the edge of the frame of which is mounted a thermal knife pivotally connected to the stop of the thermal knife, which is rigidly fixed to the module frame, while in the direction of the product in the same plane with the frame the drive chain conveyor is located in the module, the conveyor is mounted on a frame to which a roller table frame is attached or docked, on which a fan is mounted, located above the roller table, a line control unit is installed on the conveyor frame th and thermal tunnel, in the working cavity of which at least one means of circulating hot air is installed in the cavity of the thermal tunnel, in which electric heaters are located, the circulation means is located under the electric motor of its rotation and connected to it, the electric motor is mounted on the thermal tunnel, the conveyor is located in the cavity of the thermal tunnel so that its ends extend beyond the thermal tunnel, and one end of the conveyor is docked with a gap to the extreme roller of the packaging module, and the other end of the conveyor is docked with a gap to the extreme roller of the roller table, while near the frame of the packaging module from the side of its end, a shrink film coil is freely mounted on the rollers, connected by a film to the film of film located on the rollers of the module frame, while the rollers are mounted on a stand which is located below the rollers mounted on module frame. ! 2. The line according to claim 1, characterized in that the thermal knife stop is made with a lever rigidly attached to it, with which the gas amplifier housing is connected by a ball connection, the rod of which is another ball

Description

This technical solution relates to packaging machines for manual, semi-automatic and automatic shrink plastic packaging of the largest possible large-sized products: tablets, framed paintings, mineral wool boards (insulation), doors, cabinet furniture in transport packaging. Transport packaging refers to packaging that prevents damage to product surfaces during transportation.

The technical solution is intended for use in the construction of lines equipped with manual termo knives, thermal tunnels with devices for blowing products and receiving roller tables with a product cooling system.

The prior art designs of the line for packaging products in shrink film, each of which contains a shrink module, a packaging module, inlet and outlet conveyors, at least one film unwinding unit, a film welding unit.

From the patent documentation, there is known a method and device for packing items arranged in one or more rows in a shrink film, in which items are wrapped with two film tapes, welded using a welding clamp, then the items are moved to two film tapes with a pusher, which at the end of the feed movement stretches these film tapes, while each of the film tapes is immovably held by a hose brake, and when the welding clamp moves down to complete the wrapping of the tape a wreath around objects, the welding clamp finally pulls the top film. Parts of the film protruding beyond the objects are subjected to heat shrink using nozzles directing hot air to the objects (RU 2118276 C1, 08.27.1998).

A device for group packaging of piece products in a shrink film containing a frame, an unwinding device for rolls of heat shrink film, a packing table, a transverse window for welding and cutting, welding and cutting units made with the possibility of forming two parallel welds and cutting the film between with these welds, a unit for feeding the formed block of products into the packaging zone and a clamp for fixing the packed products and shrink film along their upper plane, distinguishing The fact that it is additionally equipped with a unit for supplying products to the formation zone of the block, contains two gates, one of which is located at the exit from the formation zone of the product block, and the other at the exit of the packed block from the packaging zone with its offset from the packing table, welding units and cutting are located separately from each other, respectively, above and below the transverse window and are arranged to move towards each other, and the cutting unit is equipped with a knife made with the possibility of its extension for film cutting (RU 71630 U1, 03.20.2008).

Also known is a device for packaging products in shrink film, including a mechanism for feeding products containing a fixed frame and a movable horizontal pan, a roll holder, a welding mechanism, a heat chamber and a control panel, characterized in that the shrink chamber is made with a movable front and blank rear walls and the pallet movable in the horizontal plane is mounted with the possibility of reciprocating movement (RU 5171 U1, 10.16.1997). The welding mechanism is made in the form of a spring-loaded thermal knife, pivotally connected to the rear wall of the fixed frame.

A known installation for packaging products in shrink film containing mounted on the base of the roll holder and the housing, inside of which there are heating elements, a fan, a protective partition and a welding device, characterized in that the casing is additionally equipped with a trellis tray, a rotary damper and two reflectors, the first of which is located in a horizontal plane under the trellis tray in the suction area of the fan installed in the lower part of the housing, and the second is located vertically the surface plane, passing under the first reflector between the fan and the protective partition with the possibility of directional blowing of heating elements installed along the housing wall and separated from the working area by a rotary type damper installed in the upper part of the housing, and a protective partition made vertically and reaching the location plane the first reflector, while the housing is additionally equipped with a box-shaped cover, along the perimeter of the lower part of which is at least two adjacent The raion placed linear heaters of the welding device (RU 95118220, 10.10.1997). Linear heaters of the welding device are made of nichrome wire. The cover is made of a transparent structural material.

A device for packaging products in shrink film, for example bottles, cans, metal and wooden products, household chemicals, cosmetic chemicals, cartridges, containing a skeleton, an unwinding device, a packing table, a clamping jaw of a welding device located in the transverse window of the table, is welding-cutting a sponge located on the frame, made with the possibility of rotation in a vertical plane, a loading device containing a pushing bar. The frame is equipped with a U-shaped lever with a swinging clamp, pressing the heat-shrink film and the product block at the time of welding, and the transverse window is made with a shutter that closes the lower welding jaw at the moment of moving the product block to the welding position and kinematically connected with the push bar (RU 2203 841 C1 , 05/10/2003) The invention improves the quality of packaging in shrink film, facilitates the work of the operator, increases productivity on packaging machines with manual transmission.

A device for automated packaging in shrink film of a group of products on a substrate or tray, which contains a feed conveyor, a drive, mechanisms for separating and moving the product block and feeding substrates (reamers) to the ejector, a mechanism for wrapping and trimming and welding into the film, heat tunnel wherein the mechanism for separating and moving the product block has a grip with limiters around the perimeter of the block, receiving and transmitting conveyors, a front pusher kinematically connected with the grip, p why the latter is mounted on the carriage with the possibility of vertical and horizontal reciprocating movement, the receiving and transmitting conveyors are synchronized in speed with the movement of the carriage along the course of the products, the pusher of substrates (reamers) has a supporting surface commensurate with the substrate, and is made with the possibility of angular rotation around the horizontal axis, the ejector and the feed mechanism of the substrates (reamers) are connected to the carriage; in another embodiment of the device, the receiving conveyor is a roller table, under which a tray shaper is installed with the possibility of vertical reciprocating movement in the form of a set of rods of different lengths, and above the roller table there is a device for applying glue to the reamer of the tray with side clamps (RU 2170693 C, 07.20.2001 )

A device for packaging products and their kits in shrink film containing a shrink film supply unit, a spring-loaded heat cutter, a heat chamber, fans, a product supply unit in a heat chamber in the form of a table with a tabletop having a T-shaped cross-section in a horizontal plane, moreover, the device, the bottom of the heat chamber is made with a through slot having an arc path coinciding with the path of movement of the lower part of the tabletop section, the fans are installed near the tabletop, two seconds on each side of it, with the possibility of blowing from above and below the product located on it, the countertop is made in the form of three circumferential planes formed by a lattice surface, and the thermal knife and the fan unit are located around the circumference of the table near the countertop (RU 2148542 C1, 05/10/2000).

A device for packaging products in a thermoplastic polymer film, mainly heat-shrinkable, comprising a roll unwinding unit with a support roller mounted in the housing, a welding unit and a heating table. The welding unit includes a clamping beam installed above the elastic support carrying a profile resistive electric heater. A heating table is installed behind the welding unit. On the supporting roller of the unwinding unit, the perforator spikes are radially fixed. A horizontal mounting frame is additionally docked on the housing (RU 2132775 C1, 07/10/1999). The invention provides a snug fit of the film to the surface of the product, increasing the quality of the package, and also produces packaging in different starting materials with a different sequence of operations.

A known machine for packaging in shrink film containing a desktop located between opposite surfaces of the film, the machine includes a device for automatically opening the film for insertion between its surfaces of the product (RU 2074102 C1, 02.27.1997).

Known manual installation for packing piece or a group of products in a shrink film containing a frame with a working table and a transitional table, between which there is a thermal knife, a lever through a rod connected to the foot pedal of the thermal knife drive, while a heat-shrinkable passage chamber with a conveyor is located behind the thermal knife, and the steering wheel the film is located under the desktop (RU 2170195 C2, 07/10/2001).

A device is known for packaging roll material into a shrink film containing a film feeding mechanism, a thermal knife for cutting a film, a feeding and output conveyor, a heat chamber and means for forming the ends of the package, while the thermal knife is mounted on a swing arm (RU 2086482 C1, 08/10/1997).

Devices for packaging products into a film are known from foreign patent documentation, each of which contains a frame, assemblies for unwinding a roll and packaging products into a film, means for welding film and a shaper of products into packages (WO 20060771103 A1, 07.27.2006; WO 2007080451 A2 , 19.07.2007; GB 1421977 A, 01/21/1976; US 3583888 A, 06/08/1971; US 3587839 A, 06/28/1971; US 4104848 A, 08/08/1978; US 4945707 A, 08/07/1990; US 4945707 A, 07.08.08 .1990; FR 2062674 A5, 06/25/1971; FR 2617121 A1, 12/30/1988; DE 2822674 A1, 11/29/1979).

A known method of packaging an article by wrapping it with an anticorrosive film or paper using heating the film and reducing heat, as well as a device for implementing the method, comprising a metal table with a continuation in the form of a conveyor, film rolls with the possibility of unwinding it on the table, a packaging device and an oven (JP 3846999 B2, 11/15/2006).

Known lines do not meet the conditions of increasing requirements for their productivity and quality of packaging, as well as the requirements of compactness that meet the conditions of ease of placement of lines in packaging places and saving production space.

The technical result presented in this description of the invention is to improve the quality of packaging and line performance. Another result is a reduction in line size.

The technical result was obtained by a line for packaging products in shrink film, characterized in that it contains a packaging module, on the edge of the frame of which is mounted a thermal knife pivotally connected to the stop of the thermal knife, which is rigidly fixed to the module frame, while along the course of the product in the same plane with The drive chain conveyor is located in the frame of the module, the conveyor is fixed on the frame to which the frame of the receiving roller table is attached or docked, on which the fan located above the roller table is mounted on the frame the line has a control unit for the line and a thermal tunnel, in the working cavity of which at least one means of circulating hot air is installed in the cavity of the thermal tunnel, in which electric heaters are located, the circulation means is located under the electric motor for its rotation and connected to it, the electric motor is mounted on the thermal tunnel, conveyor located in the cavity of the thermal tunnel so that its ends extend beyond the thermal tunnel and one end of the conveyor is docked with a gap to the extreme roller of the receiving roller a, and the other end of the conveyor is docked with a gap to the extreme roller of the roll of the packaging module, while near the frame of the packaging module from the side of its end, a shrink film roll is freely mounted on the rollers, connected by a film to the film of film located on the rollers of the module frame, while the rollers are installed on the stand, which is located below the rollers mounted on the module frame.

The thermal knife stop is made with a lever rigidly attached to it, to which the gas amplifier housing is connected by a ball connection, the rod of which is connected to the thermal knife by another ball connection so that the hinge connecting the thermal knife with the lever is located behind the axis of the amplifier and the thermal knife connection, and the thermal knife is on one the end has a limiter that limits the angle of rotation of the thermal knife, and at the other end of the thermal knife there is a magnet cup that interacts with an electromagnet mounted on the stop of the thermal knife.

The frame of the module has guides in which there are many sockets with axes of removable rollers located in them, located close to each other along the entire length of the frame, the rollers and the frame of the module form a roller table for placing large-sized products on it.

The chain conveyor contains two closed parallel branches of the chains, the links of which are interconnected by tracks, while the conveyor chains are connected to the electric motor of the drive for moving the chains. Each frame rack has a height-adjustable support at the bottom.

Figure 1 shows a line for packaging products in shrink film; figure 2 - packaging module line; figure 3 - thermal knife line.

The line contains a packaging module 1 (Fig. 1), on the edge of the frame 2 of which a thermal knife 3 is mounted, pivotally connected to a stop 4, which is rigidly fixed to the frame 2. On this frame there are guides 5 in which a plurality of sockets with axes located in them are made rollers 6 located close to each other along the entire length of the frame. The rollers 6 and frame 2 essentially form a roller table for placing large-sized products on it. In figure 1, as an example, such products is a door located on the rollers 6 of the frame 2.

In the direction of production, a chain conveyor 7 is located on the line, the branches of the chains of which are interconnected by tracks 8. The conveyor chains are connected to the electric motor 9 of the drive for moving the chains. The conveyor 7 is fixed on the frame 10. A frame 11 of the roller table 12 is attached or docked to the frame 10. A fan 13 is mounted on the frame 11, located above the roller table 12. On the side of the frame 10, a line control unit 14 is installed. A heat tunnel 15 is also installed on the frame 10, in the working cavity of which at least one means 16 for circulating hot air in the cavity of the heat tunnel is installed. Electric heaters 17 are located in this cavity. The circulation means is made, for example, in the form of an impeller (its design does not open), and a duct system is made in the cavity of the heat tunnel, which also does not open. The tool 16 is located under the electric motor 18 of its rotation and connected to it, while the electric motor is mounted on the thermal tunnel 15.

The conveyor 7 is located in the cavity of the thermal tunnel so that its ends extend beyond the thermal tunnel and one end of the conveyor is docked with a small gap to the end roller 6 of the packaging module, and the other end of the conveyor is docked with a small gap to the end roller 19 of the rolling table 12. Near the frame 2, from the side of its end, freely mounted on the rollers 20 bay 21 shrink film 22. The rollers are mounted on a stand 23.

To facilitate manual operation with a thermal knife, the stop 4 is made with a lever 24 rigidly attached to it (Fig. 2), to which the gas amplifier housing 25 is connected by a ball joint, the rod of which is connected to the thermal knife 3 by another ball joint, so that the hinge 26 connecting the thermal knife with a stop 4 thermal knife, located behind the axis of the connection of the amplifier with a thermal knife. Thermal knife 3 (figure 3) at one end has a limiter 27, limiting the angle of rotation of the thermal knife. An electromagnet 28 is fixed on the stop 4. A cup 29 for an electromagnet 28 is attached to the thermobar, which interacts with the electromagnet 28. The thermobar has a handle 30. Figure 1 shows the aforementioned cavity 31 of the thermotunnel and the electric heaters located in it 17. Also on the frame 2 mounted block 32 control thermal knife 3.

The packaging line operates as follows. Oversized products, for example, one door 33 (Fig. 1) or two doors stacked on top of each other and forming a product group in this way, are fed to the rollers 6 of the table of the packaging module 1, on which they are wrapped with heat-shrink film 22. In this case, the products are first laid on the lower branch of the film, cover the product with the upper branch of the film, and then the film branches located on the lower and upper sides of the product are welded with a thermal knife 3. In this case, a thermal knife cuts the film of the product block from the film canvas. During welding of the film, the thermal knife 3 is lowered to the stop 4 of the thermal knife (FIG. 2) and the electromagnet 28 magnetizes the cup 29 (FIG. 3), creating a predetermined force of pressing the thermal knife 3 to the stop 4 for a predetermined period of time.

Manually on the rollers 6 of the packaging module 1, the product block is moved to the conveyor 7, which captures the product block and moves it to the thermal tunnel 15. In the thermal tunnel, the film is heated to a predetermined temperature for a predetermined period of time, consistent with the speed of the conveyor 7. After the thermal tunnel at the exit of The film of the product block is cooled by the fan 13, and due to its properties, the process of final heat shrinkage of the film occurs. Due to heat shrinkage, the surface of the product block is compressed by a film from all sides. From the thermal tunnel, the finished product block is moved along the rollers 19 of the rolling table 12 and then transported to the storage location. In this line, products move in one direction in a straight line.

During the operation of the line, the performance of which mainly depends on the throughput of the thermal tunnel, the circulating means 16 constantly circulates hot air in the ducts and cavities of the thermal tunnel, mixes it with less heated air coming from below through the open opening of the thermal tunnel, provides intensive heat exchange of air flows in the working cavity of the thermal tunnel and creates in each of its zone the constancy of a given temperature. As a result, the heat-shrink film wrapped in the product block is uniformly heated over the entire surface of the product block in contact with heated air, which eliminates uneven heating of the film, uneven heat shrinkage, uneven tension and thermal stresses in it, leading to local breaks and microscopic negative structural changes films. During operation of the thermal tunnel, the hot air pressure increases in its cavity from rotation of the circulation means 16 onto the film, which increases the heating rate of the film in the thermal tunnel and tightly adheres the product surface to the film.

The use of air circulation means installed in the thermal tunnel in the line significantly improves the quality of the package leaving the thermal tunnel, which made it possible to increase the speed of the packaged products in the thermal tunnel and, accordingly, the productivity of the line as a whole. The compactness of the line and the reduction of its dimensions is achieved due to the reduction of the dimensions of the thermal tunnel. The technical solution was used in the design of the packaging line UM-1 "Maxi".

Claims (2)

1. A line for packaging products in shrink film, characterized in that it contains a packaging module, on the edge of the frame of which is mounted a thermal knife pivotally connected to the stop of the thermal knife, which is rigidly fixed to the module frame, while in the direction of the product in the same plane with the frame the drive chain conveyor is located in the module, the conveyor is mounted on a frame to which a roller table frame is attached or docked, on which a fan is mounted, located above the roller table, a line control unit is installed on the conveyor frame th and thermal tunnel, in the working cavity of which at least one means of circulating hot air is installed in the cavity of the thermal tunnel, in which electric heaters are located, the circulation means is located under the electric motor of its rotation and connected to it, the electric motor is mounted on the thermal tunnel, the conveyor is located in the cavity of the thermal tunnel so that its ends extend beyond the thermal tunnel, and one end of the conveyor is docked with a gap to the extreme roller of the packaging module, and the other end of the conveyor is docked with a gap to the extreme roller of the roller table, while near the frame of the packaging module from the side of its end, a shrink film coil is freely mounted on the rollers, connected by a film to the film of film located on the rollers of the module frame, while the rollers are mounted on a stand which is located below the rollers mounted on module frame. 2. The line according to claim 1, characterized in that the thermal knife stop is made with a lever rigidly attached to it, to which the gas amplifier housing is connected by a ball connection, the rod of which is connected to the thermal knife by another ball connection so that the hinge connecting the thermal knife with the lever, is located behind the axis of the connection of the amplifier with the thermal knife, and the thermal knife at one end has a limiter that limits the angle of rotation of the thermal knife, and at the other end of the thermal knife there is a magnet cup interacting with an electromagnet mounted on termonozha pore.