Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B5/00—Packaging individual articles in containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, jars
  • B65B5/06—Packaging groups of articles, the groups being treated as single articles
  • B65B5/067—Packaging groups of articles, the groups being treated as single articles in bags
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
  • B65B63/02—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
  • B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
  • B65B63/02—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles
  • B65B63/022—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for compressing or compacting articles or materials prior to wrapping or insertion in containers or receptacles using compressing chambers or plates moving in an endless path

Definitions

• the invention relates to an apparatus and a method for packaging objects in bags.
• a packaging machine according to the preamble of claim 1 is already known (US-A-3228171). This packaging machine has a revolving slide that pushes bread along a straight path into a cassette. The cassette moves the bread into a bag.
• the items to be packaged can in many cases be stacks of flat articles. Due to the type of packaging with side gussets, you are bound to certain geometric conditions when it comes to the cross-section of the package. The pack must not be taller than it is wide. This is the case for products with low content.
• the flat articles are delivered upright due to the construction of the devices with which these flat individual articles are formed. If the packaging falls below the height / width ratio, these objects must be arranged horizontally.
• the articles are often compressible objects, for example panty liners, cleaning cloths or other fluffy products.
• the invention is based on the object of proposing a method and a device for packaging objects in bags which work with great reliability and offer the possibility of reducing the effects of faults.
• the invention proposes a device with the features mentioned in claim 1 and a method with the features mentioned in claim 22. Developments of the invention are the subject of dependent claims.
• the device thus uses a slider, which is attached as a top slider to a rotating chain. This slide is therefore not moved back and forth, but along a closed path, the return path being carried out at a different height.
• the sliding distance of the product pusher is fixed. The slide first brings the object to be packed into the filling cassette, from which the object is brought into the bag station. From there it is then brought to the sealing station using the accompanying cassette.
• the filled bag can be transported gently in the transfer cassette without gaps, slits or other projections being able to influence the packaging.
• the packaging cassette is arranged and designed in such a way that the slider can push an object to be packaged into the cassette in the loading position.
• the packaging cassette can be moved in such a way that it moves together with the object to be packaged into an opened bag and remains there in the transfer position.
• the object to be packaged is therefore pushed in as long as it is still arranged in the packaging cassette.
• the packaging cassette can have smooth side walls, a smooth bottom and also a smooth upper side with a slot for the slide. If necessary, an air cushion can also be formed.
• the path of movement of the two cassettes overlaps.
• the transfer cassette can therefore be moved to a location at which the packaging cassette can also be arranged, it not being a complete overlap of the two cassettes.
• the two cassettes can stay in the transfer position at the same time and thus also overlap. This enables the filled bag to be transferred carefully from the packaging cassette into the transfer cassette with little lateral play. In the position in which the two cassettes are moved away from the transfer position, they have such a distance from one another that the bag station can open a bag freely through the cassettes.
• the overlap can occur, for example, in that the transfer cassette is made somewhat larger in width and height than the packaging cassette, so that it can partially move into the transfer cassette.
• This training is the preferred one, although a reverse training is also possible.
• the transfer cassette in the closed position is arranged in such a way that the slide has pushed the packaged object through the closing jaws of a closing station.
• the transfer cassette can be designed such that it guides the filled bag to the closing station during its movement. This guidance can take place through smooth side walls, a smooth, level floor and a smooth upper side.
• the bottom and the side walls, together with the cassette are guided over any gaps, slots or other parts of the closing station, so that the filled bag cannot get stuck anywhere.
• the filled bag is then held at this point beyond possible gaps, while the slide and the transfer cassette are then moved back.
• the contents of the bag are then on the opposite side of the sealing jaws.
• the still open bag can then be connected using welding jaws. It is also possible to generate an air cushion when the bag is being pushed out of the transfer cassette, in order to simplify or promote the pushing out process.
• the transfer cassette is slower during its movement in the conveying direction is moved as the slider. This pushes the filled bag through the cassette during the entire movement of the transfer cassette.
• the invention is particularly advantageous when the article to be packaged is a compressible article which is inserted into the bag under a certain tension. This tension should remain.
• it can be a stack of articles in which gaps between the articles are also to be compressed.
• the objects to be packaged are stacks of fluffy articles
• the further features of claim 11 can be provided.
• a series of articles arranged side by side is formed there.
• the objects lie flat on top of each other in the emptying position. They are compressed by the compression device, which is a kind of pre-compression.
• the air between the individual articles and the air in the articles themselves is displaced.
• the stack can then be removed from the rotary cassette in this compressed position.
• the compression device has a displaceable pressure wall, which is arranged approximately parallel to the flat sides of the articles and can be moved perpendicularly to these flat sides. In the filling position, this pressure wall therefore runs parallel to a side wall, while in the emptying position it then runs parallel to the floor, since the cassette changes its orientation in the same way when it is pivoted, for example by 90 degrees. What was originally a side wall becomes the floor or the lid in the emptying position.
• the compression takes place during the pivoting of the collecting cassette. This can be done, for example, in that the movement of the pressure wall is positively controlled, for example by means of a cam track, a curve guide or the like.
• the drive for the swiveling device can also preferably have a servo motor in order to be able to precisely control the dwell of the cassette in each of the two positions.
• the invention proposes that the device can have a plurality of cassettes. It can be provided, for example, that one of the plurality of cassettes is arranged in the filling position and a second cassette in the emptying position.
• the emptying of one cassette and the filling of another cassette can take place simultaneously.
• the positions can be moved out of a line so that the two positions do not interfere.
• the swiveling device swivels the collecting cassette or a plurality of collecting cassettes back and forth.
• the pivoting device is designed such that it rotates the at least one collecting cassette step by step in one direction.
• the method proposed by the invention proceeds as follows.
• An object to be packed is inserted into a packaging cassette.
• the packaging cassette with the object arranged in it is moved into an opened bag. During this movement, the object can possibly also be moved relative to the packaging cassette.
• the packaging cassette can, for example, be pushed into the bag until its front side reaches the bottom of the bag in the conveying direction.
• the object is pushed through the cassette into the bag.
• the filled bag is then transferred to the transfer cassette and the packaging cassette is pulled out of the bag. In the transfer cassette, the filled bag is pushed to a sealing station, where it is sealed.
• the packaging cassette is moved back and forth between a feed position and the transfer position.
• a revolving slider is used to move the object, and preferably several revolving slides can be used in succession.
• the transfer cassette is moved back and forth between the transfer position and the closing station.
• the transfer cassette is moved more slowly in the conveying direction than the filled bag. This leads to the filled bag being moved through the transfer cassette, that is to say being displaced.
• the packaging cassette and the transfer cassette can be arranged at the transfer position at the same time.
• the invention proposes in a further development to line up these standing articles side by side to form a stack, and after forming a stack to pivot them so that the flat articles lie on top of each other.
• the stack is then compressed by moving the flat sides of the outer articles towards one another.
• the compressed and horizontally lying stack thus formed can then be packaged further.
• the invention proposes in a further development that the stack is compressed after the beginning of the pivoting and before the stack is removed.
• the invention proposes in a further development to compress the stack during the pivoting, and preferably during the entire pivoting process.
• the compression can take place in that a pressure wall is arranged in the cassette, which is arranged laterally at the beginning of the compression and changes its position together with the cassette during the pivoting of the cassette, so that it forms the bottom of the cassette at the end of the pivoting.
• the device proposed by the invention contains a revolving chain 1 which is guided around two parallel sprockets 2 and driven endlessly.
• a revolving chain 1 which is guided around two parallel sprockets 2 and driven endlessly.
• a plurality of brackets 3 are attached to the chain 1 and have a slide plate 4 at their free end.
• This device is referred to below as a slide.
• the sliders 4 move along the lower run in the horizontal direction up to the end of the chain 1.
• Two cassettes 5, 6 are arranged horizontally displaceably below the conveyor device having the slide 4.
• the direction of the displacement corresponds to the direction of the movement of the slide 4 and thus the conveying direction of the device. 5, 6 have a similar structure. Details will be discussed later with reference to FIGS. 5 to 7.
• a stack 7 of objects to be packaged is provided at a certain point with the aid of a device which is not explained in more detail.
• the cassette 5 on the right in FIG. 1 is in its loading position.
• the cassette 5 is called a packaging cassette.
• the slider 4 pushes the stack 7 into the packaging cassette 5.
• a stack 9 of bags 10 is arranged in front of the packaging cassette 5.
• the bag station is designed in such a way that the uppermost bag 10 of the stack 9 can be opened with the aid of an opener 11. This opening movement of the opener 11 is not hindered by the two cassettes 5, 6, since these have a corresponding distance between them.
• the packaging cassette 5 with the stack 7 already inserted therein is moved in the conveying direction, that is to say from right to left in FIG. 2. As a result, the packaging cassette 5 gets completely into the bag 10.
• the stack 7 of objects is also down to the bottom of the bag 10 pushed. This state is shown in Figure 3.
• the second cassette 6, which is referred to as the transfer cassette is moved against the conveying direction until the two cassettes overlap in the longitudinal direction and the stack 7 with the aid of the slide 4 is inserted into the transfer cassette 6. This state is shown in Figure 3.
• the transfer cassette 6 is moved again in the conveying direction, the slide 4 being simultaneously moved further.
• the slide 4 moves at a greater speed than the transfer cassette 6. This means that the stack 7 is pushed in the longitudinal direction through the transfer cassette 6.
• the transfer cassette 6 is moved into a position where its front end in the conveying direction is pushed between the welding jaws 13 of a closing station. In this way, the stack 7 is pushed through the welding jaws 13 and arrives at an intermediate station 14, where it is held on both sides and from above and below. When it is pushed through the welding jaws 13, the stack rests in its pouch on a bottom of the transfer cassette 6, so that it does not get caught on any gaps in the welding station. This state is shown in Figure 4.
• the slide is then retracted by moving the boom upward around the deflection point 2.
• the transfer cassette 6 is now moved again against the conveying direction. As a result, it comes out of the space between the two welding jaws 13.
• the welding jaws 13 can now be moved towards one another in order to weld the bag.
• the device proposed by the invention has the following advantages.
• the machine availability is increased by reducing malfunctions and forced shutdowns at high cycle rates and with a multi-track packaging process.
• Product control is improved, especially if loose individual products are not inserted into a bag.
• the prepackage has an improved appearance.
• the sliding distance of the products relative to the side walls is reduced by the movement of the product guide channels, namely the cassettes.
• the transitions and abutting edges over which the product is pushed are reduced.
• An air cushion can be formed to further reduce the friction between the product and the walls of the cassettes.
• the gap between the packaging cassette 5 and the transfer cassette 6, see FIG. 1 and FIG. 4, can be used to open a bag unhindered.
• the shape and effect of the cassettes will now be explained in more detail with reference to FIGS. 5 to 7, both cassettes having a similar structure.
• the cassettes contain two side walls 15, 16, which are designed as flat walls. They have a smooth surface at least on the inside.
• the cassettes have a bottom 17, which is also smooth. The bottom 17 can also be inserted and be displaceable on lateral guides.
• the cassette Over part of its length, the cassette also includes an upper surface 18 which contains a narrow slot 19. This slot 19, which extends in the longitudinal direction of the cassette, serves to let the arm 3 of the slide 4 pass through.
• the cassette contains reinforcing ribs 20 on its outside, see also FIG. 7.
• FIG. 8 shows a possibility of converting the fluffy articles delivered vertically into flat-lying stacks.
• the device contains a swivel device 21 which contains a central shaft 22 which can be rotated by a servo motor.
• Four collecting cassettes 23 are rigidly attached to the shaft 22 without this being shown in detail in the figure.
• the rigid attachment can also be designed so that the cassettes 21 can be replaced. It is essential that the cassettes 23 (with elements 24, 26, 27, 25) can be rotated together with the shaft 22 without changing their position in relation to the shaft and their distance from the shaft.
• the cassettes have two side walls 24, 25 which are connected to one another by a base 26.
• the top 27 opposite the bottom 26 has a slot 28 which has its longitudinal extent perpendicular to the paper plane.
• the cassettes 23 are designed as cuboid containers which are open at the front and rear.
• the cassette 23 on the right in FIG. 8 is in the filling position.
• the articles 29, which are only indicated, are delivered vertically grouped by the front machine in a vertical position and inserted into the cassette 23.
• the shaft 22 is then rotated 90 degrees by a servo motor. This brings the cassette into the upper position, which serves to push the stack of objects 29 out of the cassette.
• the longitudinal slot 28 is intended for pushing out.
• the slide out logs the slide.
• a pressure wall 30 is arranged in all cassettes 23 and runs parallel to the bottom 26.
• the pressure wall 30 is slidably guided in such a way that it always remains parallel to the floor 26. This type of guidance is not shown in detail.
• the pressure wall 30 has an attachment 31 connected to it, which can be used, for example, to guide the pressure wall 30.
• a roller 32 is attached to the projection 31, which engages in the groove 33 of a cam plate 34.
• the cam disc and the groove 33 have the shape of an oval.
• the cam disc 34 is arranged in a fixed position, so it does not rotate with the shaft 22. When the cassettes 23 are rotated with the aid of the shaft 22, the rollers 32 slide in the groove 33 and thereby follow the shape of the groove.
• FIG. 9 shows the side view of the device of FIG. 8.
• the upper cassette 23 is in the emptying position, the individual parts being matched to one another in such a way that the pressure wall 30 now forming the bottom is arranged at the same height as a surface 35, along the one formed Stack 36 should be moved.
• the insertion sides of the cassettes 23, on the right in FIG. 9, are slightly expanded in order to facilitate the insertion of the articles.
• the entire arrangement, including the servo motor 37, can be raised or lowered with the aid of a lifting unit 38.
• the device can thus be adapted to different product heights (format adaptation).
• FIGS. 10 to 12 show a device in which the cassettes are given away to and fro .
• both cassettes 40 are in their filling position, in which they are to be filled with individual articles standing vertically.
• the two cassettes 40 are of different sizes.
• This device can be used to load two packaging lines at the same time.
• a pivoting device is provided in order to pivot the cassettes 40 from the filling position shown in FIG. 10 into their emptying position shown in FIG. 11.
• the cassettes which are also cuboid, contain a bottom 41, two side walls 42 and an upper side 43.
• a longitudinal slot 44 is formed laterally instead of an edge between the side wall 42 and the upper side 43.
• a pressure wall 45 is again arranged parallel to the bottom 41 and is guided in the same way, parallel to itself, within the cassette 40.
• the cassettes are pushed into a holder with the aid of an extension 46. So they can be removed.
• the holder is formed in a two-armed lever 47, which can be given away around a fixed axis 48.
• a pivoting device is provided which contains a servo motor 48 as a drive.
• the servomotor 48 rotates an arm 49, the axis of rotation of which runs perpendicular to the longitudinal axis of the servomotor 48.
• two articulated rods 50 are articulated, the other ends 51 of which are articulated to one of the two two-armed pivot levers 47.
• the two joint rods 50 lie directly one behind the other so that they cannot be distinguished.
• the arm 49 is rotated, which at the same time leads to a change in the position of the articulated rods 50.
• the two two-armed levers 47 are pivoted in opposite directions, specifically around the axis 48. As a result, the two cassettes, together with the pivoting levers 47, reach the position shown in FIG. Here the items 29 are arranged lying flat.
• the pressure wall 45 is arranged with the aid of a lever 52 so as to be pivotable about an axis 53 other than the axis 48 of the pivot lever 47.
• the pivoting of the pressure wall 45 occurs only in that the pressure wall 45 can only be moved linearly relative to the cassettes 40. Due to the articulated arrangement around another axis, the pressure wall is displaced relative to the bottom 41 of the cassettes 40, so that in this case the articles 29 are compressed again. In the emptying position, the pressure wall 45 is therefore at a distance from the bottoms 41 of the two cassettes, while in the filling position it still rests on the bottoms 41.
• FIG. 12 shows a side view of the arrangement of FIGS. 10 and 11. From FIG. 12 it can be seen that there are two articulated rods 50, one for each pivot lever 47. Similar to the previous embodiments, the entire arrangement can also be adjusted in height without this being shown in detail.
• the two articulated rods 50 are arranged one behind the other, so that they overlap in the representation of both FIG. 10 and FIG. 11. Their movement is derived from the same arm 49, so that they perform the exact same movement, provided that both articulated rods 50 are of identical design.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Container Filling Or Packaging Operations (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)
• Supplying Of Containers To The Packaging Station (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=7669941

Family Applications (1)

Country Status (6)

Cited By (1)

Families Citing this family (17)

Family Cites Families (16)

• 2001
  • 2001-12-22 AT AT01130784T patent/ATE265358T1/de not_active IP Right Cessation
  • 2001-12-22 ES ES01130784T patent/ES2220654T3/es not_active Expired - Lifetime
  • 2001-12-22 EP EP01130784A patent/EP1221410B1/de not_active Expired - Lifetime
  • 2001-12-22 DE DE50102117T patent/DE50102117D1/de not_active Expired - Lifetime
  • 2001-12-26 JP JP2001394741A patent/JP4113708B2/ja not_active Expired - Lifetime
• 2002
  • 2002-01-03 US US10/038,778 patent/US6755008B2/en not_active Expired - Lifetime

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