RU111101U1 - 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 frame of which a thermal knife is mounted, its upper plate has a magnet cup interacting with an electromagnet mounted on the thermal knife stop, and the thermal knife has a spring mechanism for returning it to the original upper the position, as well as the handle of its movement, are connected to the module frame to the right and left along the flow of the product, the supply and intermediate roller tables, the module is equipped with a box for passing through it products through it, an intermediate chain conveyor is installed on the frame along the production line, a chain conveyor is mounted on the frame, a receiving table made in the form of a table is docked on the frame, a thermal tunnel is fixed on the middle part of the conveyor frame with electric heaters located in its cavity and at least one means for circulating hot air in the cavity of the heat tunnel, while on the frame of the packaging module in its inner opening drive rollers are installed on which the film roll is located in the lower part a bypass roller located outside the frame and interacting with the film is fixed to the module’s frame, and a film tensioner is fixed at the bottom of the module’s frame, from which it extends to the bypass roller, the line has a collar which is made in the form of a rod bent in several planes, having the rounded part located on one side of the box, and the intersecting parts located on the other opposite side of the box, the collar is mounted on the module frame and goes around the box on all sides. ! 2. The line according to claim 1

Description

This technical solution relates to packaging machines for manual packaging in heat-shrinkable plastic film of long and molded products: lining, timber, floorboards, metal structures, finished furniture elements. The technical solution is intended for its use in line designs equipped with forming units for forming product packages, thermal tunnels, receiving and intermediate live rolls.

From the prior art, there are known lines for packaging shrink film of products, each of which contains a heat shrink module, a packaging module, inlet and outlet conveyors, a film welding unit, upper and lower film unwinding units, automatic line control elements, pneumatic actuators of the line device for fixing the packaging, automatic film winders.

Line designs for packaging products in shrink film are known from patent documentation, in particular, a method and device for packing items arranged in one or more rows into a shrink film, in which items are wrapped with two film tapes, are welded using a welding clamp, then objects are moved to two film tapes with a pusher, which at the end of the feeding movement stretches these film tapes, while each of the film tapes is immovably held by a hose brake Zoom, wherein when the sealing jaw executes downward movement to complete the wrapping film around the object, welding the 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 841C1, 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-shrink chamber with a conveyor is located behind the thermal knife, and a roll 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 modern requirements for their performance and packaging quality, as well as compactness requirements, since they are applicable for the implementation of their respective packaging operations.

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 frame of which a thermal knife is mounted, its upper bar has a magnet cup interacting with a magnet fixed to the thermal knife stop, the thermal knife has a spring mechanism for its return to the original the upper position, as well as the handle of its movement, are connected to the module frame to the right and left along the flow of the product, the feeding and intermediate roller tables, the module is equipped with a fixed with a box for passing products through it, a drive chain conveyor is installed on the frame behind the intermediate roller table along the movement of the products, a take-up roller table is docked to the conveyor frame, a thermal tunnel is fixed on the middle part of the conveyor frame with electric heaters located in its cavity and at least at least one means for circulating hot air in the cavity of the thermal tunnel, while on the frame of the packaging module, in its internal opening, drive rollers are installed on which the steering wheel is located n film, in the lower part of the packaging module frame a bypass roller is fixed located outside the frame and interacting with the film, also a film tensioner is fixed in the lower part of the module frame, from which it extends to the bypass roller, while the line has a collar, which is made in the form a bar bent in several planes having a rounded part located on one side of the box, and intersecting parts located on the other opposite side of the box, the collar is mounted on the module frame and around t box on all sides.

The conveyor contains closed branches of chains connected to the electric motor, which are connected to the links of the chains by tracks, and the roller table contains a frame with upper guides, in which along the length there are nests with the ends of the removable rollers located in them.

The tensioner is made in the form of a two-shouldered lever, the middle part of which is pivotally mounted on the bottom of the module frame, a counterweight is movably mounted on one end of the tensioner, and a frame is made on the other end of the tensioner through which the film web passes. One drive roller is connected to its rotation motor.

Figure 1 shows a line for packaging products in shrink film, front view with respect to the longitudinal axis of the line; figure 2 is a view of the line from above; figure 3 is a diagram of the stocking of the film; in Fig.4 box line with a collar located around it.

The line contains a packaging module 1 (Fig. 1), in the guides of the frame 2 of which a thermal knife 3 is mounted with the possibility of its longitudinal movement. Rolling tables 4 are attached to frame 2, located to the right and left of the thermal knife in the direction of production. The conveyor 4 located to the left of the packaging module 1 is the feed, and the conveyor 4 located to the right of the module 1 is intermediate. The packaging module 1 has a box 5 for passing through it one unit of lengthy products, for example, timber or several units of products, for example, several boards stacked on top of each other, to be wrapped with film in a product block. A product block is understood to mean several units of products or products, or a plurality of product units combined in a film block. Box 5 is part of the shaper of the packaging unit.

Behind the intermediate roller table 4, in the direction of production, a frame 6 of a chain conveyor 7 is installed, which has closed branches of chains, which are connected by tracks 8, forming a moving track for moving products. The conveyor 7 has a drive 9 for moving the branches of the chains, which is fixed at the end 10 of the frame 6. A receiving roller table 11 is attached to the frame 6 of the conveyor, and it comprises a rigid frame 12 with a rigid frame 12 with upper guides 13 in which the nests with the ends located in them are made removable rollers 14. On the middle part of the frame 6 is fixed thermal tunnel 15.

Each rack of the frame 2, the receiving and intermediate roller tables 4, the frames 6 and 12 has a height-adjustable support 16 in the lower part. The conveyor 7 (Fig. 2) contains closed branches of chains connected to the electric motor 9, which are connected in parallel to the tracks 8 across the conveyor.

On the frame 2 of the module, in its internal opening, drive rollers 17 are installed (Fig. 1), on which a film roll 18 is located, at least one roller 17 being connected to its rotation motor 19. In the guides of the frame 2, a bypass roller 20 is fixed (Fig. 3), located outside the frame 2 and serving to direct the film from the roll 18 into the working area of the packaging module.

The line has a film tensioner 21, which is made according to the principle of a two-shouldered lever, the middle part of which is pivotally mounted on the frame 2. A counterweight 22 is movably mounted at one end of the tensioner 21, and a frame 23 is made at the other end of the tensioner through which the film web passes.

The line has a collar 24, which is made in the form of a rod bent in several planes (Fig. 4), while the collar has a rounded portion 25 located on one side of the box 5 and intersecting parts 26 located on the other opposite side of the box. The collar 24 is mounted on the frame 2 and goes around the box 5 on all sides (figure 4). The box and collar represent a unit for forming a packaging unit in a sleeve formed from a film by collar 24 on the packaging module.

The thermal tunnel 15 (Fig. 1) contains at least one means 28 for circulating hot air in the thermal tunnel cavity installed in its working cavity 27, which is connected to the electric motor 29, as well as electric heaters 30 located in the working cavity of the thermal tunnel, connected to the power supply . On the frame 6, on the side of it, a line control unit 31 with electric control elements for the heat tunnel and conveyor fixed to it is installed. Means for air circulation is an original impeller. The impeller design is not disclosed in this description, since it is an independent and independent solution.

The functions of the indicated air circulation means can be performed by any other known means, for example, a fan driving air in the cavity of the heat tunnel in a given direction. The circulation means 28 is located under the electric motor 29 mounted on the body of the heat tunnel. The design of the ventilation means and the thermal tunnel, in their totality, have the original design and are not disclosed in this description either. In an example of the possibility of implementing the invention, as a means for circulating air in a thermal tunnel, any known impeller having blades can be used.

The thermal knife 3 is fixed on its upper bar 32 (Fig. 5), has a handle 33 for moving the thermal knife, and also a magnet cup 34 interacting with an electromagnet 35 mounted on the thermal knife stop 36.

The thermal knife is spring-loaded with springs to return it in a vertical plane to its highest position. To do this, inside the thermal knife 32, which is pivotally mounted on the axis 37 for attaching the thermal knife to the stop 36, a spring mechanism 38 is fixed connected to the stop 36. A thermal knife 3 control unit (not shown) is mounted on the frame 2. The film 39 (Fig. 3) is unwound from the roll 18, envelops the frame 23 and the bypass roller 20 and covers a box 5.

The line works as follows. Products, for example, long boards are manually fed first to the feed roller 4, stacked on top of each other and form a group of products from them. The front end of the product group is opened in box 5 and, at the exit from it, the front end of the product enters a preformed film sleeve formed by collar 24. Then the product group is pulled through the box 5 when the thermal knife is open. While dragging the product group through the box, the collar 24 collapses the film and, with its intersecting parts 26, overlays one longitudinal part of the film web on another longitudinal part of the film web. At the same time, the boards stacked on top of each other are wrapped with a film. Thus, the film web passes through the collar 24 and is wrapped around the boards, and a production unit wrapped in the film is formed. When pushing the product, it moves to the intermediate roller table 4 to the right of module 1 (Fig. 1) and occupies an intermediate position on the line.

The edges of the film in the overlap zone along the entire length of the package, located on the top of the package, are welded with a spot welding tool for reliability and, if necessary. Lower the thermal knife 3 to the stop, while the electromagnet 35 magnetizes the magnet cup 34, the edge of the film is welded near the end of the package and the length of the sleeve of the packaging film from the common film sleeve that runs off collar 24 for the time specified for the operation of the electromagnet 35. After welding, the thermal knife returns to its original position under the action of the spring mechanism 38. Next, the product packaging is moved along the intermediate roller table 4 to the conveyor 7, which feeds it into the heat tunnel 15, where the packaging film is heated to ry at which the film begins to shrink. After the product leaves the heat tunnel, the film finally shrinks around the product, the film shrinks, compresses the boards and at the same time it cures, acquiring the specified rigidity. The film is cooled by air at natural temperature on the receiving roller table 11.

During the operation of the line, the performance of which depends on the throughput of the thermal tunnel, the circulating means 28 constantly circulates hot air in the thermal tunnel ducts and in its cavity, mixes it with a less heated air mass, provides intensive heat exchange in the working cavity and creates a constant set temperature in each of its zones . As a result, the shrink film that wraps the product is uniformly heated over the entire surface of the product block in contact with heated air, which eliminates the unevenness of film heating, the unevenness of its heat shrinkage, tension and thermal stresses in it, leading to local breaks and microscopic negative changes in the structure of the film. When using the hot air circulation means installed in the heat tunnel in the line, the quality of the package leaving the heat tunnel is significantly improved, which allows to increase the throughput of the heat tunnel and, accordingly, the line productivity. When the thermotunnel is operating in its cavity, the hot air pressure increases from the rotation of the circulation means, which also contributes to an increase in the heating rate of the film in the thermotunnel and its tight fit to the surface of the product. The efficiency and speed of heating the film allowed to increase the throughput of the line, reduce its dimensions by reducing the dimensions of the heat tunnel. The technical solution was used in the design of the design of the packaging line UM-1 "Line" manual.

Claims (3)

1. A line for packaging products in shrink film, characterized in that it contains a packaging module, on the frame of which a thermal knife is mounted, its upper plate has a magnet cup interacting with an electromagnet mounted on the thermal knife stop, and the thermal knife has a spring mechanism for returning it to the original upper the position, as well as the handle of its movement, are connected to the module frame to the right and left along the flow of the product, the supply and intermediate roller tables, the module is equipped with a box for passing through it products through it, an intermediate chain conveyor is installed on the frame along the production line, a chain conveyor is mounted on the frame, a receiving table made in the form of a table is docked on the frame, a thermal tunnel is fixed on the middle part of the conveyor frame with electric heaters located in its cavity and at least one means for circulating hot air in the cavity of the heat tunnel, while on the frame of the packaging module in its inner opening drive rollers are installed on which the film roll is located in the lower part a bypass roller located outside the frame and interacting with the film is fixed to the module’s frame, and a film tensioner is fixed at the bottom of the module’s frame, from which it extends to the bypass roller, the line has a collar which is made in the form of a rod bent in several planes, having the rounded part located on one side of the box, and the intersecting parts located on the other opposite side of the box, the collar is mounted on the module frame and goes around the box on all sides. 2. The line according to claim 1, characterized in that the conveyor comprises closed branches of the chains connected to the electric motor, which are connected to the links of the chains by chains. 3. The line according to claim 1, characterized in that the tensioner is made in the form of a two-shouldered lever, the middle part of which is pivotally mounted on the lower part of the module frame, a counterweight is movably mounted on one end of the tensioner, and a frame is made on the other end of the tensioner through which passes film canvas.