RU111100U1 - 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 the upper and lower rolls of film are installed, and a thermal knife movably mounted on the module frame, which is located above the stop of the thermal knife with the possibility of contact and welding, and pieces of film at the contact point, a feed conveyor made of sections is docked to the module frame, located on one straight line passing through the longitudinal axis of the packaging module, the conveyor forms together with other components in the line of the product supply unit, which is part of the shaper of the product block, the chain conveyor frame located on the specified straight line is docked to the module frame along the production line, the receiving roller is connected to the conveyor frame, a thermal tunnel is installed on the middle part of the conveyor frame, in the cavity of which there is a means for circulating hot air in the ducts of the heat tunnel and in its cavity, while the circulation means is connected to an electric motor mounted on the body of the thermal tunnel, also in the cavity of the thermal tunnel p electric heaters are installed for heating the air, dividers, cut-offs, a table movable in the vertical direction with limiters located in its working area, which are part of the product shaper, are mounted on the frame of the packaging module in front of the thermal knife in the direction of the thermal knife; a pusher is installed on the frame of the packaging module in its horizontal guides for moving products from the movable table to the receiving table of the packaging module, while the movable table, pusher, thermal knife and cutters are connected with the corresponding

Description

This technical solution relates to shrink film packaging lines for food, chemical and other products contained in glass, metal, paper or plastic containers, in particular, cans, bottles, cans, boxes, bags and the like. This technical solution is intended for its use in the design of packaging lines that perform welding and cutting of heat-shrink film in the process of pre-packaging products, and such lines are equipped with a pneumatic drive of the thermal knife and the shaper of the package, have a limiter for moving the film roll and an automatic film winding device. The presented line has direct-flow execution when all components of the line are located on one longitudinal straight axis.

Lines for packaging shrink film of products are known from the prior art, each of which contains a heat shrink module, a packaging module, inlet and outlet conveyors, a film welding unit with a thermal knife, upper and lower film unwinding units, automatic line operation control elements, and a thermal tunnel, moreover in well-known lines use heat-shrinkable polyethylene film having the properties of its compression when heated.

Appliances and methods are known from patent documentation for packaging products, products, objects and materials in heat-shrinkable film, in particular, there is a method and device for packaging objects located in one or more rows in heat-shrinkable film, in which objects are wrapped with two film tapes, welded them with a welding clamp, then the objects are moved to two film tapes with a pusher, which, when the feed movement is completed, stretches these film tapes, while each of the film tapes is not Vision held hose brake, 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, cosmetics, 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 pushing bar (RU 2203841 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 07/19/2007; GB 1,421,977 A; 01/21/1976; US 3,583,888 A; 06/08/1971; US 3,578,839 A; 06/28/1971; US 4,104,848 A; 08/08/1978; US 4,945,707 A, 7/8/1990; US 4,945,707A, 07/08. 1990; FR 2062674 A5, 06/25/1971; FR 2617121 A1, 12/30/1988; DE 2822674 A1, 11/29/1979). Also known is a method of packaging an article by wrapping it with an anti-corrosion film or paper using heating the film and reducing the heating, 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 technical solutions do not fully meet the increasing requirements for packaging quality and line productivity.

The technical result of the invention is to improve the quality of packaging and line performance, as well as increasing the compactness of the line.

The technical result was obtained by a line for packaging products in shrink film, characterized in that it contains a line for packaging products in shrink film, characterized in that it contains a packaging module, on the frame of which are installed upper and lower rolls of film and 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 and film cuts at the contact point, the feed conveyor made of sections is docked to the module frame, located On one straight line passing through the longitudinal axis of the packaging module, the conveyor forms, together with other components of the line, a product supply unit included in the former of the product block, along the direction of production, the chain conveyor frame is located on the specified straight line with the conveyor frame the receiving roller table is connected, a thermal tunnel is installed on the middle part of the conveyor frame, in the cavity of which there is a means for circulating hot air in the air ducts of the thermal tunnel and in its cavity, at m circulation means is connected to an electric motor mounted on the body of the thermal tunnel, also electric heaters are located in the cavity of the thermal tunnel for heating the air, on the frame of the packaging module before the thermal knife in the direction of product movement, dividers, cut-offs, a table movable in a vertical direction with limiters located in its working area are mounted that are part of the shaper of products, a pusher is installed on the frame of the packaging module in its horizontal guides to move products from the bottom on the receiving table of the packaging module, while the movable table, pusher, thermal knife and cutters are connected to their respective pneumatic cylinders for their movement, the housing of each pneumatic cylinder is rigidly fixed to the module frame on which the said receiving table for receiving products is fixed, above the receiving table it is movable in a clamp is mounted on the module frame guides, connected to a clamp movement pneumatic cylinder.

Rollers are mounted on the module frame at the top and bottom of the frame, on which the upper film roll and the lower film roll are supported, the branches of the film rolls are welded together into one film canvas, which is located with the possibility of contacting the production unit, while the film is stored between the bypass rollers and the tension the roller located in the guides of the module frame, the upper roll is connected to the fabric tensioner of the film of this roll, the tensioner is made in the form of a two-shouldered lever with a counterweight at one end, the middle part of the tensioner hinges It is connected to the module frame, the opposite end of the tensioner is made in the form of a frame in which the shrink film web of the upper roll is located.

The conveyor contains a pair of closed circuits interconnected by tracks forming the plane of product movement along the line, and an electric motor for moving the conveyor chains, which is mounted on the end of the conveyor frame that is farthest from the frame of the packaging module.

On the frame of the receiving roller table along its length, nests are made with the ends of the removable rollers of the roller table located in them.

Figure 1 shows the line for packaging products in shrink film in front view with respect to the longitudinal axis of the line; figure 2 is a line in a top view; figure 3 shows the packaging module of the line in the spatial image (the tensioner in figure 3 is not shown); figure 4 - diagram of the storage (location) of shrink film in the packaging module.

The line contains a packaging module 1 (Fig. 1), on the frame 2 of which a thermal knife 3 is mounted (Fig. 3), a feeding conveyor 4 (Fig. 2) made of sections is connected to the frame 2, located on one straight line passing through the longitudinal axis of the packaging module. The conveyor has a pair of closed track chains forming the plane of product movement along the line. The conveyor forms, together with other components of the line, a product supply unit included in the former 5 of the 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.

To the frame 2 in the direction of movement of the products docked frame 6 of the chain conveyor 7, located on the specified straight line. The conveyor 7 has a pair of closed circuits interconnected by tracks 8, forming a plane of product movement along the line. The conveyor has an electric motor 9 for moving the chains of the conveyor 7, which is mounted on the end of the frame 6, the farthest from the frame 2 of the packaging module near which a guard 10 is mounted on the frame of the conveyor 4. Dividers 10 are mounted on the frame 2.

To the frame 6 of the conveyor (Fig. 1), a take-up roller table 11 made in the form of a table is docked, comprising a frame 12 with upper guides 13, in which nests with the ends of the removable rollers 14 located in them are made.

On the middle part of the frame 6 is installed a thermal tunnel 15, which is mounted on this frame. Each rack of frames 2, 6 and 12, as well as each rack of the conveyor frame 4, has a height-adjustable support 16 at the bottom. On the frame 2 of the packaging module 1, before the thermal knife 3 along the course of the production, a table 17 movable in the vertical direction is mounted (Fig. .3) with limiters 18 located in its working area, which are part of the product shaper 5. The movable table 17 is used to move products from the level of the conveyor 4 to the level of the tracks 8 of the conveyor 7.

The packaging module contains a pusher 19 moving in horizontal guides for moving products from the movable table 17 to the receiving table of module 1. The pusher 19 is connected to the rod of the pneumatic cylinder 20, the thermal knife 3 is connected to the rod of the pneumatic cylinder 21, the shutoff valves 24 are connected to the rods of the pneumatic cylinders 22.

The movable table 17 is connected to the rod of the pneumatic cylinder 23. The housing of each specified pneumatic cylinder is rigidly fixed to the frame of the packaging module. (figure 2), On the frame 2 is also attached cutoffs 24 (figure 2).

The conveyor 4 has an electric motor 25 for moving the track chains, which is mounted on the end of the frame of the conveyor 4, which is closest to the frame 2 of the packaging module. On the brackets 26 of the frame 2, the pneumatic cylinders 22 of the cutoffs are fixed. The said receiving table 27 for receiving products is fixed on the frame 2, and a clamp 28 (Fig. 1), connected to the pneumatic cylinder 29 for moving the clamp, is movably mounted in the guides of the frame 2 above the table 27.

Rollers 30 are fixed on the frame 2 (FIG. 1), on which the upper film roll 31 and the lower film roll 32 are supported. The canvases 33 and 34 (Fig. 4) of the film rolls forming the upper and lower branches of the film, respectively, are welded together into one web, through which, resting against it, passes a group of products and turns into a film. The film is stored or located between the bypass rollers 35 and the tension roller 36 located in the guides 37 of the frame 2. The thermal knife 3 is located above the stop 38 so that when the thermal knife touches the stop, the film branches located in the back of the packaging unit from the side of the block movement are compressed with a thermal knife, they are welded and cut off from the general film web.

In the cavity 39 (FIG. 1) of the heat tunnel 15, a means 40 for circulating hot air in the air ducts of the heat tunnel and in its cavity is located, the means 40 is connected to an electric motor 41 fixed to the body of the heat tunnel under the circulation means. In the cavity 39 are electric heaters 42 for heating air in the cavity of the heat tunnel. The thermal tunnel is equipped with at least one means of circulating heated air in the working cavity of the thermal tunnel formed by a duct system, which are not disclosed in this description. The design of the ventilation means and the thermal tunnel, in their totality, have the original design and this combination is not disclosed in this description. As an example of the feasibility of the invention, any known impeller having blades can be used to circulate air in a thermal tunnel. A more specific implementation of the impeller is not given in this description, since it is an independent and independent solution. The functions of the indicated means for circulating air can also be performed by any other known means, for example, a fan driving air in the cavity 39 of the heat tunnel in a given direction.

On the upper part of the thermal knife 3, a guard 43 is fixed (Fig. 3), which excludes touching the operator’s hands on the thermal knife in the predetermined position of the thermal knife. The guard is triggered by a safety sensor.

On the upper part of the frame 2 (Fig. 4), a film tensioner is installed, made in the form of a U-shaped frame 44. At the ends of the frame are movable counterweights 45, the middle part of the frame 44 is pivotally connected to the frame 2, the opposite end 46 of the tensioner is in contact with the canvas 33 shrink film.

On the frame 2 of the packaging module 1 (Fig. 2), a control unit 47 for feeding conveyor 4, thermal knife 3, cutters 24, movable table 17, pusher 19, clamp 28, and drive rollers 30 is mounted.

On the frame 6 of the chain conveyor 7 (Fig. 1), a control unit 48 for controlling electric heaters 42 of the thermal tunnel 15, an electric motor 41, air circulation means 40 in the cavity of the thermal tunnel and a fan 49, which is mounted on the frame 6 of the conveyor 7, is mounted.

The packaging line operates as follows. The product units are fed automatically or manually to the conveyor 4 and are moved by the conveyor track chains to the product former 5. Passing through the dividers 10, the units of production form a series of products. When all rows are filled, the conveyor filling sensor is triggered, cut-offs 24 are moved apart, and the products are advanced to the movable table 17 in the area of the limiters 18.

When the table is fully loaded with 17 product blocks, table filling sensors are activated, cut-off devices 24 are retracted to the starting position and delayed products on the conveyor 4. At the same time, the movable table 17 lowers down and pusher 19 is activated, moving the product beyond the plane of the stop 38 and thermal knife 3 (Fig. 4) on the receiving table 27 (Fig.1, 3). In this case, the movable table 17 returns to its original position, and the pusher 19 moves back and the clamp 28 presses the products to the table 17. Then the thermal knife drops down to the stop 38 and the film branches are welded, which wrapped the product, as well as the film is cut from its canvas. After that, the thermal knife 3 and clamp 28 rise up by the pneumatic cylinders and the cycle of the line is repeated.

After packaging each subsequent product block with a film, the product block pushes each previous product block towards the heat tunnel 15. The product blocks fall onto the tracks 8 of the conveyor 7, which moves them into the heat tunnel 15, where the film of the product block heats up, shrinks and compresses the product block. After exiting the heat tunnel, the film of the block is cooled by the fan 49 and additionally shrinks, tightly fitting the block from all sides. Next, the product block falls on the receiving roller 11. During the operation of the line, the performance of which depends on the throughput of the thermal tunnel, the air circulation means 40 (Fig. 1) constantly circulates hot air in the thermal tunnel ducts, mixes it with a less heated air mass entering the thermal tunnel from below , provides intensive heat transfer in the working cavity 39 and creates a constant set temperature in each of its zones. As a result, the heat-shrinkable film, which is wrapped around the product block, is uniformly heated over the entire surface of the product block in contact with heated air, which eliminates the unevenness of the film heating, the unevenness of its heat shrinkage, the unevenness of its tension and the local 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.

The installation on the frame 2 of the packaging module 1 (figure 2) of the control unit 47 of the feed conveyor 4, thermal knife 3, cutters 24, movable table 17, pusher 19, clamp 28 and drive rollers 30 significantly improves the layout of the module, facilitates installation and maintenance of the line. All of these components of the line belong to the packaging module and they are connected functionally and structurally with the other heaters 42 of the heat tunnel 15, the electric motor 41, the air circulation means 40 in the heat tunnel cavity and the fan 49 mounted on the frame 6 of the conveyor 7, controlled by another block 48 (FIG. 1) easily detachable from the frame 2 modules. The technical solution was used in the design of the packaging line UM-1 "Automatic" straight-through.

Claims (4)

1. A line for packaging products in shrink film, characterized in that it contains a packaging module, on the frame of which the upper and lower rolls of film are installed, and a thermal knife movably mounted on the module frame, which is located above the stop of the thermal knife with the possibility of contact and welding, and pieces of film at the contact point, a feed conveyor made of sections is docked to the module frame, located on one straight line passing through the longitudinal axis of the packaging module, the conveyor forms together with other components in the line of the product supply unit, which is part of the shaper of the product block, the chain conveyor frame located on the specified straight line is docked to the module frame along the production line, the receiving roller is connected to the conveyor frame, a thermal tunnel is installed on the middle part of the conveyor frame, in the cavity of which there is a means for circulating hot air in the ducts of the heat tunnel and in its cavity, while the circulation means is connected to an electric motor mounted on the body of the thermal tunnel, also in the cavity of the thermal tunnel p electric heaters are installed for heating the air, dividers, cut-offs, a table movable in the vertical direction with limiters located in its working area, which are part of the product shaper, are mounted on the frame of the packaging module in front of the thermal knife in the direction of the thermal knife; a pusher is installed on the frame of the packaging module in its horizontal guides for moving products from the movable table to the receiving table of the packaging module, while the movable table, pusher, thermal knife and cutters are connected with the corresponding favoring them by pneumatic cylinders move them, each air cylinder body is rigidly fixed to the frame of the module, which is mounted the said receiving table for receiving products, above the receiving table is movable in the module frame rails mounted clamp connected to a pneumatic cylinder moving clamp. 2. The line according to claim 1, characterized in that the rollers on which the upper film roll and the lower film roll are supported on the module frame at the top and bottom of the frame, the branches of the film rolls are welded together into one film sheet, which is arranged to contact with the product block, while the film is stored between the bypass rollers and the tension roller located in the guides of the module frame, the upper roll is connected to the film web tensioner of this roll, the tensioner is made in the form of a two-shoulder lever with a counterweight on one second end, the middle part tensioner pivotably connected to the module frame, the opposite end of the tensioner is configured as a frame, wherein the web is disposed shrinkable upper film roll. 3. The line according to claim 1, characterized in that the conveyor comprises a pair of closed circuits interconnected by tracks, forming a plane of product movement along the line, and an electric motor for moving the conveyor chains, which is mounted on the end of the conveyor frame that is farthest from the frame of the packaging module. 4. The line according to claim 1, characterized in that on the frame of the receiving roller table along its length there are nests with the ends of the removable rollers of the roller table located therein.