RU2191722C2 - Automatic packing device - Google Patents

Abstract

FIELD: packing facilities. SUBSTANCE: invention relates to devices for packing food products and articles of different shape and dimensions as well as liquid and paste-like substances and their combinations. Proposed automatic packing device has roll holders mounted on frame, changing and discharging means and welding mechanisms. Device has also shaper of tapes running from roll holders. Rolls of longitudinal welding mechanism are spring- loaded, being installed on two separate shafts at different sides of tape shaper for changing width between them. Rubber or metal extended shaft arranged across frame is installed under rollers for rotation and engagement with rollers. Tape shaper is made in form of two [pairs of limiting plates located parallel to rollers cantilever mounted on frame and installed between packing material tapes and upper tape forming shafts engaging with additional shaft. Charging means can be made in form of conveyor cantilever-mounted on frame for displacement along frame and arrangement between tapes. For fitting excess packing material inside package, blade elements are installed before cross welding mechanism. Detachable holders are installed on cross welding mechanism to provide different configurations of welds. Device makes it possible to form welds of different configuration capable of withstanding heavy loads. EFFECT: provision of packages of different sizes and shape owing to possibility of adjusting distance between rollers forming side welds. 6 cl, 7 dwg

Description

 The invention relates to packaging equipment, in particular to automatic machines for packaging various products: food and non-food piece products of various shapes and sizes, as well as liquid and pasty and their combinations, is intended for placing products in a package formed from two tapes.

 A device for packaging a film of a product is known, including a roll holder, guide rollers for a film, a feeder and a lifting and lowering carriage with clamps for the formation of transverse seams and a cutting tool (see AS 368122, IPC B 65 V 9/12). This device and its like are intended for filling the product and sealing packages of tape heat-sealing material.

 The sleeve forming, which is part of these devices, complicates the design of the machine, this device does not allow you to form a package of two tape materials.

 A device for packaging products, such as bread in bags. The device contains a feeding and unloading unit for bread, a blade unit for stretching each package, moved reciprocating across the direction of transportation of products. The spatula assembly pulls the bag onto the product intended for packaging, which, during this operation, is prevented from being transported in place. The spatula assembly comprises upper and lower vanes that can move relative to one another. The lower blade contains a nozzle directing a continuous air flow with an inclination forward to the bread to keep it from falling (see UK patent 2287925, IPC B 65 V 25/18). However, this device does not allow the packaging of products hermetically, the range of packaged products is limited, the blade assembly is complex and not reliable in operation, because should, moving back and forth, pull the bag on the product, and the lower blade having a nozzle, blowing air flow, thereby can pull the bag off the blades.

 A device is known for packing groups of piece objects into a film (see as.with. 1578032, IPC B 65 V 9/06), which consists of two platforms installed at the same level with a gap between each other. A plastic film is stretched in the gap. The device for maintaining the film consists of roll holders and guide rollers for tensioning and changing the direction of the film. The device for sealing the ends of the package is a welding beam, mounted on the rods of pneumatic cylinders. Welding traverses carry out sealing of butt and side seams of a package.

 This device is difficult constructively and in operation, allows you to pack only piece items. Welding with traverses does not provide a high-quality seam.

 Closest to the proposed is a device for packaging products in a strip of flexible material. The device comprises a bed, bobbin holders of strip flexible material mounted on it, tension deflecting and guide rollers for uniform supply of material. The device also contains loading and discharge conveyors, transverse and longitudinal welding mechanisms, pulling and welding rollers. The device allows you to use laminated polyethylene paper as packaging material (see AS 1414713, IPC B 65 V 11/16).

 The disadvantages of this device are the restrictions on the size of the packaged materials, the lack of versatility, the limitation of the materials used (use only heat sealable materials).

 The objective of this solution is to create airtight packaging of various products of various shapes and sizes, both food and non-food, i.e. creation of a universal machine of simple design, as well as providing multi-seat packaging, for example, for solid and liquid products at the same time.

 The problem is solved in that in a packaging machine containing two roll holders mounted on the frame, loading and unloading means, mechanisms for longitudinal welding with heated rollers and transverse welding with mounted knives, an additional tape former from roll holders located with the possibility of feeding the upper and lower tapes is introduced packing material, the rollers of the longitudinal welding mechanism are spring-loaded, mounted on two separate shafts on opposite sides of the tape former changing the distance between them, under the rollers is installed with the possibility of rotation and interaction with them rubber or metal extended shaft located across the frame.

 The loading means, made in the form of a conveyor, is cantilevered on the frame with the possibility of placement between the tapes and moving along the frame.

 Blade elements are introduced in front of the transverse welding mechanism for refueling excess packaging material inside the package.

 The transverse welding mechanism may have removable knife holders to provide various configurations of the transverse seam mounted on the axis with the possibility of rotation in opposite directions, and the lower knife is fixed on the frame motionless and spring-loaded.

 The tape former is made in the form of two pairs of restriction plates located parallel to the rollers and cantileverly mounted on the frame, located between the packaging material tapes and the upper tape forming rollers interacting with an additional rubber shaft.

 The molder may have additional stops and additional pairs of rollers above the additional rubber shaft to create multi-seat packaging of the desired shape.

 In addition, the machine may include a dispenser for liquid, paste-like or bulk materials located in front of the tape former.

The proposed packaging machine is illustrated by drawings. Figure 1 shows a General view of the packaging machine; figure 2 is the same, a top view; figure 3 is a section aa; figure 4, 5, 6 - elements of the shaper film for large, small piece and bulk, for bulk, liquid and piece products with multi-pack, respectively; 7 is a view of various packages, where:
1 - frame;
2 - heated rollers;
3 - roller case;
4 - case of rubber shafts;
5 - rubber shaft of the longitudinal welding mechanism;
6 - knife holder body;
7 - upper knife;
8 - lower knife;
9 - spring-loaded lower knife body;
10 - elements (plates) of the lower ribbon former;
11 - roller molding upper tape;
12 - top bobbin;
13 - lower bobbin;
14, 15 - tensioning shafts;
16 - conveyor;
17 - limiter;
18 - elements of the molding of the upper tape;
19 is a roller forming the front of the package;
20 - spring-loaded blade elements for bending into the excess tape of the upper sheet to avoid wrinkles during the formation of transverse seams;
21 - dispenser for bulk and liquid products;
22 - additional rubber shaft of the tape former.

 The packaging machine includes a frame 1 with housings 3 fixed on it, in which the heated rollers 2 are mounted on the shafts, and the housings 3 with rollers 2 are fixed relative to each other at a distance necessary for installing the packaged product between them. A rubber (metal) shaft 5 is fixed under the rollers 2 in the housings 4 so that the end surfaces of the rollers 2 and the shaft 5 are in contact with each other, and the shafts with the rollers 2 are spring-loaded, which ensures the necessary pressure of the rollers 2 on the shaft 5. A former is installed in front of the rollers 2 tapes, including plates 10, 18, are fixed to the frame 1 cantilever, the rollers 11 installed in the cases 3 (in the same as the rollers 2) are also fixed on the frame 1. Under the rollers 11, a shaft 22 is installed in the cases 4 so that shafts 11 and shaft 22 are pressed against each other. The bobbin 12 is installed above the frame 1, and the bobbin 13 - on the frame 1, the shafts 14 and 15 are installed respectively on the frame and above it. The rollers 2 in the casings 3, as well as the rollers 11 in the casings 3 have the ability, moving relative to each other, to change the distance between each other depending on the size of the packaged product. Between the rollers 2 in the casings 3, as well as the rollers 11 in the casings 3, additional rollers 2 and rollers 11 can be installed in order to obtain multi-seat packaging. In the cases 6, holders with upper knives 7 are mounted on the axes with heating, and under it in the spring-loaded case 9 a lower knife is installed 8. The lower knife with the holder can be identical to the upper one. Holders with knives have the ability to rotate. To form a package of large products, a roller 19 is installed on the holders of the upper knife 7. For forming folds inward along the packaging, spring-loaded blade elements are installed 20. To ensure a certain interval between the products, a stopper 17 is used. For conveying large-sized products, a conveyor 16 is used, installed between the rollers 11 and further between the rollers 2, while the lower tape from the reel 13 is placed on the conveyor 16 or under it. For the supply of liquid or bulk products designed dispenser 21.

 The operation of the packaging machine is as follows. The lower tape is installed from the reel 13 along the shafts 14 between the rollers 11 and the shaft 22, then between the rollers 2 and the shaft 5 through the shaper of tapes. The upper tape from the bobbin 12 along the shaft 15 through the tape former is installed in the same way as the lower tape between the rollers 11 and the shaft 22 and further between the rollers 2 and the shaft 5, and a volume for the packaged product is formed under the belt former. T.O. two lower and upper tapes are installed simultaneously between the rollers 11 and the shaft 22, as well as between the rollers 2 and the shaft 5, forming the necessary volume for the packaged products, then both tapes come together between the holders 6 and 9 with the knives 7 and 8. Turn on the heating rollers 2 and knife holders 6 and 9. Install the products on the lower tape. The stopper 17 at a certain moment opens the passage, the product on the lower tape, as on a conveyor, moves with it, passes between the shafts 11, the upper tape of the reel 12 covers the product to be wrapped through the tape former, hot rotating rollers 2 and shaft 5, weld the ends of the tapes along , so two side seams are formed by two rollers 2 and a shaft 5. Next, a transverse seam is formed by rotating hot holders 6 and 9 towards each other, where transverse cutting by knives 7 and 8 also occurs. at the speed of movement of the tapes from the bobbins 12 and 13. As a result of the simultaneous supply of two tapes from the bobbins 12 and 13, welding their edges along between the rollers 2 and the shaft 5, as well as welding across the knife holders 6 and 9 with the knives 7 and 8, we get packed between with two tapes the product with two lateral and two transverse sealed seams. In this case, tapes 12 and 13 can be used in various combinations: for example, reel 13 - film or paper or cardboard, and reel 12 - film (or vice versa). With a certain configuration of knife holders, we obtain various configurations of heat-sealing seams. To form packages when packing large products without folds, a roller 19 is installed on the holder, as well as blade elements 20.

 The heated rollers and the rubber (metal) shaft, which are in motion, provide a high-quality seam with a simple design, because the heated rollers are in rotational motion, then heating the film and acting on it with the force provided by the springs, constantly change the sections of the film. T. about. excessive heating does not occur, there is no adhesion of the films to the rollers. The proposed device allows the use of tape packaging material in various combinations: the lower tape is possible from film or paper, the upper tape - film, or paper, or cardboard. In this case, the seams pass along the perimeter of the package.

 The device allows you to receive seams of various configurations, which can withstand heavy loads. Having the ability to adjust the distance between the rollers forming the side seams provides packaging of various configurations and different sizes.

Claims (6)

 1. A packaging machine comprising two roll holders mounted on the frame, loading and unloading means, longitudinal welding mechanisms with heated rollers and transverse welding with mounted knives, a tape former, characterized in that an extended shaft with the possibility of rotation, rubber or metal, is inserted into it, located across the frame and interacting with the rollers of the longitudinal welding mechanism, which are mounted on two separate shafts on opposite sides of the tape former with the possibility of changing the distance I am between them, and the tape former from roll holders located with the possibility of feeding the upper and lower tapes of the packaging material is made in the form of two pairs of restriction plates located parallel to the rollers, cantileverly mounted on the frame and placed between the packaging material tapes, and the molding rollers of the upper tape, interacting with an additional rubber shaft.  2. The machine according to claim 1, characterized in that the loading means, made in the form of a conveyor, is cantilevered on the frame with the possibility of placement between the tapes and moving along the frame.  3. The machine according to claim 1 or 2, characterized in that the blade elements are introduced in front of the transverse welding mechanism for refueling excess packaging material inside the package.  4. Automatic machine according to any one of claims 1 to 3, characterized in that the transverse welding mechanism has removable knife holders to provide various configurations of the transverse seam mounted on the axis with the possibility of rotation in opposite directions, and the lower knife is fixed on the frame motionless and spring-loaded.  5. Automatic machine according to any one of claims 1 to 4, characterized in that the former has additional stops and additional pairs of rollers over an additional rubber shaft to create multi-seated packaging of the required shape.  6. Automatic machine according to any one of claims 1 to 5, characterized in that it contains a dispenser for liquid, paste-like or bulk materials, located in front of the tape former.

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