FI101953B - Method and apparatus for forming a closed housing around a purpose - Google Patents

Method and apparatus for forming a closed housing around a purpose Download PDF

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Publication number
FI101953B
FI101953B FI931351A FI931351A FI101953B FI 101953 B FI101953 B FI 101953B FI 931351 A FI931351 A FI 931351A FI 931351 A FI931351 A FI 931351A FI 101953 B FI101953 B FI 101953B
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FI
Finland
Prior art keywords
sheet
paper
article
base
base area
Prior art date
Application number
FI931351A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI931351A0 (en
FI101953B1 (en
FI931351A (en
Inventor
Fausto Pizzi
Valerio Parisini
Original Assignee
Bielomatik Leuze & Co
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Filing date
Publication date
Priority to DE4210231A priority Critical patent/DE4210231A1/en
Priority to DE4210231 priority
Application filed by Bielomatik Leuze & Co filed Critical Bielomatik Leuze & Co
Publication of FI931351A0 publication Critical patent/FI931351A0/en
Publication of FI931351A publication Critical patent/FI931351A/en
Application granted granted Critical
Publication of FI101953B1 publication Critical patent/FI101953B1/en
Publication of FI101953B publication Critical patent/FI101953B/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00Packaging other articles presenting special problems
    • B65B25/14Packaging paper or like sheets, envelopes, or newspapers, in flat, folded, or rolled form

Description

101953
A method and apparatus for forming a closed sheath around an article
The invention relates to a method according to the preamble of claim 1 and to an apparatus according to the preamble of claim 7 for forming a closed wrapper around an object.
DE-B-1 096 822 discloses such a device in which the leveling rollers iron the vertical wrapping paper wrappers on the upper surface of the rice, after which the press holding the rice down is raised. For the most part, the resilient rice tends to swell upward after removal of the press, so that the upper 10 sheets in particular can move relatively easily. Thus, during ironing, the movement of these edge areas towards the center of the rice may occur, especially in the upper edge area, as a result of which the upper sheets may be damaged.
In the known device, the wrapping paper sheet is then prepared by first measuring the corresponding length of the wrapping paper sheet and then cutting it. This requires interrupting the feed movement of the wrapping paper sheet and the wrapping paper tape. The preparation of the wrapping paper sheet is accompanied by an article wrapping cycle in the wrapping device. Particularly in the case of paper rice consisting of individual sheets, it must be taken into account that the sheets of paper rice were not damaged during the wrapping of the paper rice on a sheet of packaging paper.
It is an object of the invention to provide a method and a device by which damage to an object during a wrapping cycle can be avoided.
In order to solve this problem, a method and a device are proposed, which are characterized by what is set forth in the characterizing parts of claims 1 and 7. Thus, in the area of the upper edge of the object, a particularly good position of the wrapper against the flat material is achieved, whereby damage to the individual sheets can be avoided, especially in connection with paper rice. The transverse fold forced into the area at the top of the object prevents the individual sheets of paper rice from wrinkling. In this case, the transverse fold can be forced into the sheet material sheet, displaced in height or laterally with respect to the upper edge of the object. In the method according to the invention, the underside of the article is placed on the applied sheet material sheet, in particular on a wrapping paper sheet, so that in the region of the side surfaces of the article there are portions of the sheet material sheet extending laterally which correspond substantially to the area to be covered. The object is then lowered, in which case a sheet of planar material is placed on the side surfaces of the object. By pushing the article 35 sideways, a sheet of planar material is then brought to the top of the article. The ends of the sheet material sheet brought together are then joined together. With this method, a tubular wrapper is obtained which then only has to be closed at the end sides of the object to be wrapped.
In order to ensure a good and undamaged sheet of sheet material on the side surfaces of the article, when lowering the article, its side surfaces are preferably stiffened by a compressive force acting on the upper side of the article. This is particularly advantageous in the case of single-sheet paper rice, because the introduction of a compressive force avoids the displacement of the single sheets during the setting of the packaging paper sheet.
When lowering and / or moving the object, a portion of the planar material sheet larger than 10 mm is preferably pulled out of the fixed substrate area. To ensure that the sheet material sheet is unfolded over the object, a larger portion of the sheet material sheet is pulled out of the fixed substrate area against the force of the retaining means. In particular, in the region of the front upper edge of the article, the adhesion of the sheet of sheet material can be improved by keeping the sheet of material 15 tensioned when placed on the top side of the article. When moving the object relative to the sheet of sheet material, it is thus possible to guarantee that the sheet of sheet material is unfolded on the upper side of the article.
Prior to the wrapping cycle, a feed section of the sheet material sheet may be added, in which the article is preferably guided together with the sheet material sheet. Thus, the object 20 is protected during its feeding movement by a sheet of flat material placed under it.
Interruption of the feed movement for measuring and cutting the sheet material sheet can be avoided by connecting the sheet material sheet by perforation to the sheet material strip, which is detached when the sheet material sheet is fed, in particular by stopping the sheet material strip feeder. The measurement and piercing of the planar material sheet 25 from the planar material strip may preferably occur during the wrapping cycle of the preceding article. In this way, the feeding of the objects to be wrapped can take place in a faster period of time, because it is not necessary to interrupt the feeding movement of the wrapping paper sheet and the object in order to remove the perforation.
The article is preferably positioned relative to the sheet material sheet during the feed movement of the sheet material sheet.
During the feeding of the sheet material sheet, at least one part of the sheet material extending over the sheet material sheet can be provided with an adhesive line, which is preferably applied to the area of one edge. The adhesive strip can then be used to seal the end regions of the wrapping paper sheet which are led to each other into a tubular wrapper.
3 101953
The lateral displacement of the article to place the sheet of sheet material on the upper side of the article preferably takes place perpendicular to the feed movement of the article.
The device according to the invention may have a two-part base surface with a movable base area and a fixed base area. The substrate surface is preferably horizontal and there is a vertically displaceable substrate area. At the beginning of the wrapping cycle, a sheet of sheet material is applied to the substrate surface, whereby the object to be wrapped is on top of the sheet of sheet material. In this case, the object is positioned so that one of its side surfaces is at the height of the dividing line between each base area. When the Las-10 covers the base area to be counted, the object is thus also lowered, whereby a sheet of planar material on top of the fixed base area is placed in the side area of the object.
The movable substrate area may have recesses into which, when the substrate area is moved, a guide means for guiding the sheet of sheet material onto the side area of the object 15. Thus, the guide means acts to place the sheet of planar material in the second side region of the article. In this case, there may be a control means consisting of two combs which can be adjusted relative to each other. With the relative movement of the combs relative to each other, the area of the sheet of sheet material slightly exceeding the top side of the object can be placed on the top side of the object.
The guide means may be displaceable in the recesses of the movable base area. Thus, the object can be moved laterally by the guide means to bring a sheet of planar material to the top side of the object. In this case, the guide means can be displaced transversely to the feed direction of the object. In one embodiment, the guide means comprises, on the one hand, combs with approximately L-shaped teeth and, on the other hand, combs with inverted L-shaped teeth. In the co-aligned position, the teeth of the combs can advantageously form an inverted edge for the sheet of sheet material. In the folded position of the combs, the pivot edge ensures that an area extending over the sheet of sheet material is brought onto the upper side of the object.
30 In order to package objects of different lengths, it may be provided that the distance between the guide means and the area to be moved is adjustable.
In order to avoid damage to the article, when a sheet of planar material is attached to the side areas of the article, which is particularly advantageous in the case of single-sheet paper rice, a pressing means is used which acts on the side areas of the article. In this case, for example, a pneumatic press can be used. The pressing means is preferably displaceable vertically with respect to the region of the movable substrate and is preferably arranged in the guides of the gripper. The pressing means is used only at the stage of the wrapping cycle when the sheet material sheet is attached to the side areas of the article.
The pivot means may be provided with a pivot rod which is adjustable with respect to the pivot means. In this case, the turning means can co-operate with the movably tracked transport means, in particular the belt conveyor.
The fixed substrate region receiving one sub-area of the planar material sheet preferably has a slatted structure, which preferably has a base rail for the planar material sheet arranged next to the movable substrate region.
The sub-area of the sheet of sheet material on the fixed substrate area is preferably held by a retaining means. In order to avoid contact with the applied adhesive strip at the final stage of applying the sheet material sheet, the retaining line is preferably designed to be displaceable.
Below the fixed base area there is a transport means for receiving an object from the movable base area 15. In this case, the conveying means may have two belt conveyors at a distance, whereby one of the belt conveyors is preferably formed to be height-adjustable relative to the other belt conveyor. It is also possible to use an upper belt conveyor which is horizontally displaceable and preferably oriented towards the flap-20 means of the flat material sheet. This can omit the extra swivel rod to make the cross-fold.
The sheet of sheet material and the object can be fed by means of a feeding means, which preferably has grippers, each of which has guided gripping arms. In this case, the feeding means must be moved in the wrapping device perpendicular to the object transfer direction. The feeding means may be guided in guides located above the base surface, whereby the external guides are laterally displaceable. In this way, the device can be adapted in a simple manner for each size of the object to be wrapped.
The feed means is preferably arranged in hollow profile beams in which a drive mechanism using the feed means 30 is placed.
To ensure accurate placement of the sheet of sheet material over the article, the article must be positioned relative to the sheet of sheet material. Adjacent to the base surface is preferably a base bench in which a movable stop for the object is arranged. In this case, the stop has guides on the side for positioning the object. With the guides 35, the object can be oriented so that one of its side surfaces is on the dividing line between the two base areas before the actual wrapping cycle.
101953 p
In addition, the device may be equipped with a dispenser for applying the adhesive line. It is preferably guided into the guide of the gripper.
Application examples of the invention are shown in the drawings and will be explained in more detail below.
Figure 1 shows a schematic side projection of an embodiment of a device according to the invention, partly in section,
Figure 1 according to the embodiment of Figure 2 the projection direction of the arrow II,
Fig. 3 is a top view of the embodiment of Fig. 1; Figs. 4 and 5 show a schematic representation of a wrapping device of a further embodiment in different method cycles; Fig. 6 shows an ancillary embodiment of the wrapping device; Fig. 7 is an enlarged view positioning the article R on the wrapping paper sheet 102 prior to the wrapping cycle; and Fig. 9 is a modification of the detail shown in Fig. 7.
Figures 1 and 3 show schematically an apparatus for further wrapping paper rice R with a sheet of sheet material-20 called a wrapping paper sheet 102, which could also consist of materials other than paper. The device is implemented as an automatic packaging machine. The packaging machine shown has a lifting table 50 on which many paper rice Rs are stacked on top of each other. R individual reams are separated from one another in each case on the other end region arranged inside the bodies of S. The lifting table 50 is the direction of the arrow 51 in the direction of the height-adjustable Delta 25. In this case, the lifting table 50 is used in such a way that the transfer takes place in each case by the thickness H of the paper rice R and the bottom of the uppermost paper rice R is located at the same level as the base bench 1 adjoining the lifting table 50.
The base bench 1 has an approximately L-shaped cross-section, whereby 30 is a horizontal base surface for paper rice R. Below the base bench 1 there is a feeding device 17 for feeding and measuring a strip of wrapping paper or flat material 2. The feeder 17 has two superimposed unloading rollers with a drive mechanism not shown in more detail. The wrapping paper strip 2 is pulled from the wrapping paper roll 16 by the rotational movement of the wrapping rolls. The wrapping paper strip 2 35 is turned at the turning roll 52 in the direction of the feeder 17. The unloading rollers of the feeding device 17 6 101953 are connected to a measuring device not shown in more detail, so that the length of the fed wrapping paper strip 2 can be accurately measured.
Adjacent to the feeding device 17 is a cutting device 18 which controllably provides the wrapping paper strip 2 with a transverse perforation E transverse in its longitudinal direction 5 or the like. The transverse perforation E in the wrapping paper strip 2 is selected so that the wrapping paper strip 2 still has sufficient strength. In practice, good results have been obtained when the transverse perforation has perforations of about 50 to 60 mm in length, which break with bases 1 to 3 mm long.
The cutting apparatus 18 with respect to the lateral direction offset 10 is positioned in the tensioning roller 19, which is a double arrow 53 in the direction to be moved. The wrapping paper strip 2 coming from the cutting device 18 is turned at the tensioning roller 19 and is on the upper side of the base bench 1. The tensioning roller 19 serves to keep the wrapping paper strip 2 fed through the feeder 17 taut. The tension roller 19 can be operated, for example, by gravity or spring force. This is achieved in such a way that the height of the tension roller 19 is adapted to each length of wrapping paper 2 to be unpacked. Figure 1 shows two working positions of the tensioning roller 19. These working positions are each adapted to the different work stages of the packaging machine. If the tensioning roller 19 is in its lower position, drawn in broken lines, then the wrapping paper strip 2 is passed past the sensor 22. The position of the tensioning roller 19 can be detected by the sensor 22.
Above the base bench 1, beams 10, 110 of a carrier structure not shown in more detail are placed, which support structure is attached to the base of the packaging machine. The horizontally suspended beams 10, 110 are positioned parallel to each other. As shown in Figure 2, the beams 10, 110 support the guides 9, 109, 209. The guides 9, 109, 209 each have an approximately rectangular hollow profile piece movably arranged in the beams 10, 110. By moving the external guides 9,109, it is thus possible to adjust the size R of the respective paper rice.
The guides 9,109, 209 are in each case guided by a clamp-like gripper 6, 30 7, 8 in the direction of transport of the paper rice R. As can be seen from Figure 1, the gripper 6, which is formed in essentially the same way as the grippers 7 and 8, has jaw-like gripping arms. The gripping arms of the gripper 6 delimit the intake of the paper rice R fed from the lifting table 50. When the grippers 6, 7, as can be seen from Figures 2 and 3, are of the same size, the gripper 8 is formed substantially smaller, because only the wrapping paper strip 2 is pressed between its gripping arms.
7 101953
Gripping 6, 7, 8 can be driven synchronously in the direction of the arrow 54, which is also the R rice paper conveying direction. The shape of the gripper operating mechanism should be explained, for example, to the gripper 6 by means of Fig. 1. Inside the guide 9 formed as a hollow body, a belt 13 or the like is placed, which is endless.
5 The belt 13 is guided around spaced apart rollers 11,12. In this case, the roller 12 is driven by a drive belt 14. The drive belt 14 is connected to a central drive unit not shown in more detail.
The belt 13 is deflected onto the gripper 6 by means not shown in more detail. If the roller 12 is used to drive belt 14 so bunches 6 can be controlled by the dashed-line position shown in 10 of 54 in the direction of the arrow drawn in the solid line position.
Vertically to the upper side of the base bench 1 there is a stop as shown in Figures 1 and 3, the stop parts 15,115 of which can be lowered and arranged, for example, on the equipment supporting the grippers 6, 7. It can be seen from the upper projection shown in Fig. 3 that the abutment portions 15,115 are spaced apart from each other by a distance adapted to the dimensions of the paper rice R. In this case, each abutment part 15, 115 has side guide sides 55 for paper rice R. Johdekylkien 55 of the free end region of the oblique position of the border in the direction of arrow 54 in the direction of the tapered cross section of the feed reams of paper for R.
Displaced laterally relative to the abutment portions 15, 115, rollers 3, 103 are mounted on a common shaft, each of which is provided with a return stop. The rollers 3,103 keep the wrapping paper strip 2 in contact with the upper side of the base bench 1 and prevent the strip 2 from moving backwards.
In the case of rectangular paper rice R, the alignment takes place so that the narrow side of the paper rice R is on the side of the base bench 1. As can be seen from Figure 3, the longitudinal sides 4,104 of the paper rice R are then taken between the guide sides 55 of the stop 15,115.
The packaging machine shown has a base surface 21 located at a distance from the base bench 1. The base surface 21 has a two-part structure. In this case, the base area 21a is formed to be height-adjustable, in contrast to which the adjacent base area 21b is arranged fixedly. There is a dividing line 61 between the base areas 21a, 21b. The base area 21a with a rectangular bottom surface is provided with a plurality of parallel recesses 26. The recesses 26 have a rectangular cross-section, the longitudinal axis of the recesses 26 being arranged transversely to the paper rice transport direction R, is indicated by arrow 54. The height adjustment of the base area 21a takes place by means of a transfer device 27, β 101953 which may have, for example, cranks connected to each other by a drive shaft 28, each connected to the underside of the base area 21a by means of rotating rods. It can be seen from Figure 2 that there are two parallel shafts 28 driven by belts 29, 30 or chains. In this case, the belt 30 is connected to a power transmission unit (not shown). By using the area of substrate 21a is transferred, depending on the direction of the double arrow 56 direction.
Attached to the guides 9, 109 are pneumatically operated pushers 31, 32 which can be operated in the direction of the lifting movement of the base area 21a. It can be seen from Figure 2 that the pushers 31, 32 are located at a small distance from the side edges of the fire heirs R on its upper side. In this way, it is provided that the side areas of the paper rice R are kept rigid during the packing period and are protected from wrinkling during the application of the paper sheet 102.
Below the base area 21a there are combs 33,34 entering its recesses 26. The combs 33,34 arranged in pairs in the recesses 26, the closer shape of which is apparent in particular from Figures 2 and 4, have teeth 133, 134 arranged with respect to the vertical base area 21a, the dimensions of which are adapted to the cross section of the recesses 26. The teeth 133, 134 are guided into the recesses 26 when lowering the base area 21a according to Fig. 1. The base bodies of the combs 33, 34 are guided to be moved over the horizontal guides 35. The guides 35 are arranged parallel to the recesses 26 of the base area 21a and rest on the base of the packaging machine. As can be seen from Figure 2, the comb 33 is through using the chain 36 in the direction of the double arrow 57 to be moved. The adjustable connecting portions 37 connecting the comb 34 to the comb 34 guide the comb 34 with it when the comb 33 is moved and allow the combs 33, 25 34 to be moved relative to each other relative to each other.
The teeth 133 of the comb 33 are straight when the teeth 134 of the comb 34 have an upward L-profile. In this case, the horizontal sides of the teeth 134 run on the front side of the vertical sides of the teeth 133 of the comb 33.
The combs 33, 34 can be moved together with their guides 35 by means of a transfer device 39 in the height direction and relative to the base area 21a. For example, the transfer device 39 may have carriage slides which can be moved in the height direction manually or automatically.
Displaced laterally into the height-adjustable base area 21a, there is a fixed base area 21b separated by a dividing line 61, as can be seen from Figures 35 and 2. In the illustrated embodiment, the base area 21b has a slatted structure. The slat structure of the base area 21b consists of parallel slats 58 arranged at a distance from each other, each of which has a circular cross-section. Adjacent to the base area 21a is a base rail 59 having a rectangular bottom surface. The slats 58 and the base rails 59 are as long as the height-adjustable base area 21a.
s Above the base rail 59, as can be seen in particular from Figure 4, a brush 24 is arranged, which is oriented vertically with respect to the base rail 59. The brush arm is connected to a drive unit 25 attached to a guide 109. For example, a pneumatically operated drive unit 25 can be used to adjust the height of the brush 24. The brush 24 can hold a packing paper sheet 102 in the base area 21b.
Attached to the guide 209 is an adhesive dispenser 23. It has a nozzle with which a narrow strip of adhesive can be applied parallel to the edge 5 of the packaging paper sheet.
Fig. 4 shows a slightly modified embodiment in which the presser 15 32 has an L-shaped cross-sectional shape, the horizontal side being provided with a pivot edge 132. In the lowered position of the puncher 32, the pivot edge In addition, the transverse fold forced on the wrapping paper sheet 102 ensures a good and non-puncture alignment of the wrapping paper sheet 102 against the top edge 62 of the paper rice R. In particular, wrinkling of the rice paper sheets R during the wrapping paper sheet 102 can be avoided.
Below the base area 21b, there are two belt conveyors 38, 41. The belt conveyors 38, 41 are each positioned horizontally and spaced apart.
The belt conveyors 38, 41 used in opposite directions of rotation receive paper rice R from the base area 21a. The upper belt conveyor 38 is height-adjustable relative to the lower belt conveyor 41. In addition, the upper belt conveyor 38 can be moved in a horizontal direction.
In the embodiments of Figures 1-4, a pivot rod 40 is arranged near the upper belt conveyor 30, which is arranged horizontally and has a U-shaped cross section. The pivot rod 40 positioned at the height of the upper belt conveyor 38 is movable in the horizontal direction. In this way, as can be seen in particular from Figure 4, the wrapping paper sheet 102 can be provided with a transverse fold at the pivot edge 132. This is accomplished by pressing and wrapping a sheet of packing paper 102 held by a brush 24 over the base area 21b on the pivot edge 132. The transverse fold affects the undisturbed positioning of the sheet 101053 on the front edge region of the paper rice R.
The embodiment of Fig. 6, which is otherwise implemented in the same way as the embodiment of Fig. 4, does not have a pivot bar 40. Here, the transverse fold of the wrapping paper sheet 102 is achieved by moving the upper belt conveyor 38 to the pivot edge 132 of the pusher 32. Thus, the other end of the belt conveyor 38 replaces the pivot rod 40.
The lower belt conveyor 41, which is longer than the upper belt conveyor 38, is joined by a second conveyor device 43 which leads to a unit in which the front and rear end areas of the wrapper are closed.
The method flow of the embodiments described above is explained below:
First, a method sequence for feeding and measuring a wrapping paper sheet 102 from a wrapping paper strip 2 will be described. This method sequence is substantially the same in all embodiments and will be explained in particular with reference to Figures 7 and 8.
According to Figs. 1 and 7, the top paper rice R is pushed manually or automatically from the lifting table 50 up to the abutments 15,115 to the adjacent tray bench 1. Thus the front edge of the paper rice R is attached to the abutments 15, 115. On the upper 20 side of the tray bench 1. The rollers 3, 103 shown in Fig. 3 support the end working area of the wrapping paper strip 2 on the upper side of the base bench 1.
The paper rice R, which is held laterally by the guide sides 55 of the abutment portions 15,115, is positioned so that the longitudinal side 4 of the paper rice R is positioned at a height of the dividing line 61 between the base area 21a and the base area 21b. The longitudinal side 4 of the paper rice R is also located in this place in case of resizing. The distance D1 between the longitudinal side 4 of the paper rice R and the edge 5 of the wrapping paper strip 2 is dimensioned so that the side area and the top side of the paper rice R can be covered with the wrapping paper. The distance D2 between the longitudinal side 104 and the edge 5 of the wrapping paper 30 is equal to the height H of the paper rice R extended by about 40 mm.
The packaging machine can be used to wrap paper rice R with a length L 530 to 1,400 mm and a height H 12 to 80 mm with a wrapping paper wrapper. To wrap such paper rice R, a packing paper sheet 102 of length S is required.
35 Depending on the desired wrapper, the length can be S = L + 2H + 80 mm. Thus, the wrapping paper sheet 102 extends beyond both the leading edge and the trailing edge of the paper rice R. The length of the oversize of the wrapping paper sheet 102 depends on the method of sealing the wrapping paper wrapper selected.
The grippers 6, 7, 8 located in the guides 9, 109, 209 grip the edge area of the paper rice R and the wrapping paper strip 2 below it. As can be seen from Figures 2 and 3, the smaller gripper 8 grips only the wrapping paper strip 2 or the wrapping paper sheet 102. The paper rice R is protected during feeding. by feeding paper rice R together with a sheet of wrapping paper 2.
To measure the wrapping paper sheet 102, a feeding device 17 is used, on which the wrapping paper strip 2 is unwound from the wrapping paper roll, respectively.
The wrapping paper strip 2 turned at the turntable 52 is between the unloading rollers used by the feeder 17. According to the position shown by the solid line, the wrapping paper strip 2 travels to its initial position before being measured and punched from the feeder 17 through the cutting device 18 to the upper side of the base bench 1, whereby the intermediate tension roller 19 is turned.
15 The packaging paper sheet 102 can be prepared in two ways.
In the first modification, the unloading rollers of the feeder 17 initially unload the length S1 = S - (A C + C B). The location of points A, B and C, and their distances from each other, is shown in Figure 7. Point A is the location of the cutting unit 18. Point B is the end edge or separation area of the wrapping paper strip 2 and point C is the position of the leading edge R of the paper rice R defined by the abutment portions 15,115. During the unwinding of the length S1, the wrapping paper strip 2 is held taut by a tensioning roller 19 which presses against its top against the wrapping paper strip 102. After the length S1 has been disassembled and the length S has been between the cutting unit 18 and the point B, the cutting unit 18 is used. Thus, the wrapping paper strip 2 is provided with a transverse perforation E extending transversely to its length-25. The transverse perforation E can be made even after making the transverse perforation E to a certain tensile stress and thus remains transportable.
After making the transverse perforation E, the length S2 is further discharged by the feeding device 17, whereby S2 = A C + C B. After this method cycle, the packaging paper strip 2 is in the dashed position shown in Figs. The transverse perforation E is thus in the direction of travel of the wrapping paper sheet 102 even before the tension roll 19. The length S of the wrapping paper sheet 102 corresponds to the distance between point E and point B. The distance between points A and E is the same as the distance between points A and B.
The tensioning roller 19, now in its lower position, guides the wrapping paper strip 2 past the sensor 22, which can detect the perforation E. The precise cutting of the lengths S1, S2 12 101953 is effected by the unloading rollers of the feeder 17 as measuring rollers and connected to a measuring device connected to the feeder .
In the modification of the preparation of the wrapping paper sheet 2 according to Fig. 9, the length adjustment of the sheet is realized by adjusting the cutting device 18. The adjustment takes place in such a way that the length of the strip between points A and B is the same as the length S of the wrapping paper sheet 102. This method change can then be carried out in one step.
The application according to Fig. 9 corresponds to that according to Fig. 7, but with the following differences:
The unloading and measuring rollers of the feeder 17, the tensioning roller (pendulum roller) 19 and the cutting or punching unit 18 are arranged on a vertically displaceable carriage 99, which can be adjusted to adjust the length S = AB. The tension roller 19 is positioned in the paper feeding direction before the cutting device 18, however, 15 after the feeding device 17. The "stock" formed by the tensioning roller is emptied when the rice R is transported. As in Fig. 7, the tearing occurs when the tensioning roller has reached its upper position, possibly with its upper position determined by the adjusting screw 98. The tension roller 19 and thus the "storage" can also be arranged, as in Fig. 7, after the cutting device. In this application, the rollers 3 provided with a freewheel mechanism, which protect the wrapping paper from slipping back-20, are placed even before the horizontal part of the table.
Correspondingly, the preparation of the measured wrapping paper sheet 102 is carried out by using the packaging machine continuously during the packaging cycle. In this way, productivity can be increased, since the movement of the packaging paper sheet 102 and the paper rice R feed-25 can take place without interruption. To remove the wrapping paper sheet 102, it is only necessary to stop the wrapping paper strip 2, while the wrapping paper sheet 102 can continue its feed movement.
The following explains the packing cycle. In this case, the paper rice R is provided with a tubular and closed wrapper. At the end of the packing cycle, in order to completely close the pape-30 rice R, it is only necessary to close its front and back with a corresponding wrapper fold.
The paper rice R is in the position shown in Figures 1 and 7 at the beginning of the packing cycle. The front side of the paper rice R is attached to the parts 15, 115 of the stop. The wrapping paper strip 2 prepared by the feeder 17 or the cut wrapping paper sheet 35 102 is in the dashed position. According to this, the tension roller 19 is in its lower position.
13 101953
When the paper rice R is fed against the abutment parts 15, 115, the pliers 6, 7,8 close. At the same time they are moved in the direction of the arrow 54. The grippers 6, 7, 8 are driven by drive belts 13,14, which are not used by the drive unit shown in more detail. grippers synchronously 6, 7, 8 is derived from each of their own Jn-5 OUT! 9 during, 109, 209. ream R transfer direction of the arrow 54 direction, it is administered in combination with a packaging paper sheet 102 from the beginning bench 1 adjacent to the substrate surface 21. This allows the variable height of the start area 21a taking its upper position at this time according to Fig. 1, supports both the paper rice R and the wrapping paper strip 2. The longitudinal side 4 of the paper rice R is then located at the height of the dividing line 10 61 between the base area 21a and the base area 21b. In contrast, the substrate area 21b has only a wrapping paper strip 2.
During the transfer of the paper rice R to the base surface 21, the tensioning roller 19 is raised vertically. The bypassing of the transverse perforation E can be detected by the sensor 22. Before the grippers 6, 7, 8 have completed their movement, the tensioning roller 19 reaches its upper position, whereby according to Figs. 1 and 7 the wrapping paper strip 2 is in the position shown by a solid line. The wrapping paper strip 2 is subjected to a tensile stress acting in its longitudinal direction by pulling the grippers 6, 7, 8. The unloading rollers of the feeder 17 stop after the transverse perforation E has passed the rolls 3,103 holding the wrapping paper strip 20 2 on the upper side of the base bench 1. In this way, the transverse perforation E is precisely removed. The removal of the transverse perforation E takes place at point B of the base bench 1. The paper strip 2 is then again in the position shown in Figures 1 and 7, which is the initial position. According to it, the removal of the transverse perforation E takes place at exactly point B, where the end of the paper strip 2 was previously positioned.
Particularly precise detachment was achieved by a transverse perforation E with perforations of about 50 to 60 mm in length with bases of about 1 to 3 mm between them. This type of transverse perforation E also guarantees a sufficiently durable packaging paper strip 2.
As can be seen in Figure 8, the wrapping paper sheet 102 extends over both the front and back edges of the paper-30 rice R, with the oversize for complete closure of the wrapper depending on the fold selected.
During the feeding movement of the paper rice R, an adhesive strip is applied to the substrate surface 21 by means of an adhesive dispenser 23 on a wrapping paper strip 2 or a wrapping paper sheet 102 in the region of its edge 5. Once the ream of paper R and the 35 below the packing paper sheet 102 are fully substrate region 21a, as shown in Figure 1, opening the grippers 6, 7, 8. In the following, forward movement 14 101 953 arrow 55 in the direction of the grippers 6, 7, 8 is controlled from the ream R from. Finally, the grippers 6, 7, 8 are in the position of the gripper 6 shown in solid line in Fig. 1.
Conveniently, at least one of the bunches 6,7 is provided with a dimension sensor with which the height R of the paper rice can be determined. Irregularities can thus cause the packaging machine to stop.
At the beginning of the wrapping cycle of the paper rice R, it is in the position shown in Fig. 1, whereby the base area 21a assumes its upper end position. In Figure 2, the position of the paper rice R and the wrapping paper sheet 102 at the beginning of the wrapping cycle is indicated by 10 dashed lines. The base area 21a can be moved vertically downwards by the transfer unit 27. The paper rice R and the wrapping paper sheet 102 are held in the region 21 of the longitudinal sides 4, 104 by the pushers 31, 32 fixed in the base region 21a. In this way, the side areas of the paper rice R can be kept rigid. Thus, during wrapping of the packaging paper sheet 102, wrinkling can be avoided. As the tray area 21a is lowered-15, a packing paper sheet 102 is placed on the longitudinal side 4 of the paper rice R as shown in Fig. 2. It is held flat by the brush 24 on the tray area 21b and pulled therefrom over the tray rail 59 and the pivot bar 40.
When lowering the base area 21a, the teeth 133,134 of the paired combs 33, 34 are guided into the recesses 26 of the base area 21a 26. The combs 33, 20 34 are previously positioned at a short distance to the longitudinal side 4 of the paper rice R. The small area extending beyond the paper sheet 102 is to the longitudinal side 4 of the paper rice R when lowering the base area 21a (see Fig. 2). Thereafter, the end region of the wrapping paper sheet 102 slightly exceeds the area of the longitudinal side 4 of the top side of the paper rice R.
The teeth 133, 134 are initially in the position shown in Figure 2. Thus, the front side of the horizontal side of the tooth 134 coincides with the upper side outside the vertical side of the tooth 133. This achieves an extension of the effective tooth height.
The following method steps are particularly clear from Figure 4.
The transfer unit 37 is controlled so that the comb 33 is guided together with the comb 34. In this case, the horizontal side of the teeth 134 places the short edge of the wrapping paper sheet 102, which crosses the upper side of the paper rice R, on top of this.
In the automatic and rapid course of the individual method cycles, the long edge of the packaging paper sheet 102 35 still on the base area 21b is then brought to the upper side of the paper rice.
15 101953
At the end of the lowering step of the base area 21a, the pusher 32 is raised slightly from the top of the paper rice R. The presser 32 is preferably a few millimeters, e.g. 2-3 mm, above the top side of the paper rice R. Then, as can be seen in Fig. 4, the turning edge 132 of the pusher 32 crosses the longitudinal side 4 of the paper rice R on the side.
The pivot bar 40 below the base area 21a is guided against the wrapping paper sheet 102 so as to be pressed against the pivot edge 132. Thus, the wrapping paper sheet 102 held on the base rail 59 -10 over the earthy edge 62 is improved. In particular, wrinkling of rice R is prevented. Since the presence of the pusher 32 on the upper side of the paper rice R thus becomes unnecessary, the paper rice R can be transported immediately by the teeth of the comb 33.
Packaging paper sheet 102 to bring the ream R 15 is pushed to the upper side of this transverse movement relative to the supply direction of the arrow 60, which is provided by moving the combs 33, 34.
The belt conveyors 38, 41 below the base area 21b move at the same speed as the combs 33, 34. When the front part of the paper rice R has arrived at the belt conveyor 41, the belt conveyor 38 is lowered onto the top of the paper rice R. The calculated belt conveyor lowers the paper rice R of the packing paper sheet 102 continuously as it is moved to its upper side. In the corresponding step, the pivot rod 40 is retracted and the pusher 32 is moved to its upper position. Likewise, the brush 24 is raised so as not to come into contact with the adhesive line introduced onto the packaging paper sheet 102.
It can be seen from Fig. 5 that the operation of the comb 34 ends when its teeth 134 have come close to the belt conveyor 38. The comb 33 instead remains in operation and continuously moves away from the comb 34, finally in a solid line position in Fig. 5 corresponding to Fig. 2. the starting positions of the combs 33, 34. The upper rear edge of the wrapping paper sheet 102, held by the teeth 134 of the comb 30, continuously slides away from these teeth 134 and simultaneously joins below the front upper edge of the wrapping paper sheet 102. The wrapping cycle is completed when each edge region is joined by the belt conveyor 38 at the adhesive line. Eventually, the comb 33 also stops, which then returns to the rest position with the comb 34.
35 When the paper rice R has completely arrived on the belt conveyor 41, a sheet of wrapping paper 102 is completely wrapped around the paper rice R and secured thereon. The conveying device 43 then receives the paper rice R and feeds it into the device to close the end areas of the tubular paper wrapper.
The belt conveyor 38 then returns to its upper position. Likewise, the base area 21a is led back up again. Thereafter, the above-mentioned cycle may be repeated.
In the embodiment according to Fig. 6, in which there is no pivot rod 40, this function is performed by the belt conveyor 38 itself. Thus, in the end region of the belt conveyor 38, a fold is forced into the wrapping paper sheet 102 between it and the pivot edge 132. Thereafter, the pressure of the belt conveyor 38 against the pivot edge 132 10 can be reduced, but the compression should be maintained. In this position, the wrapping paper sheet 102 is initially placed on top of the paper rice R by actuating the belt conveyor 38. The belt conveyor 38 is then guided away from the pusher 32 and its pivot edge 132 to allow the pusher 32 to be deflected. The following method cycles are in principle of the same type as in the embodiments described above.
During the execution of the packing cycle, at the feed station of the packing paper strip 2, the corresponding packing paper sheet 102 is cut as described above and prepared for the next packing cycle. Thus, the feeding and wrapping of paper rice R can be done without interruption. By transverse perforation E 20, the packaging paper sheet 102 connected to the wrapping paper strip 2 can be removed during the feeding of the paper rice R, whereby the grippers 6, 7, 8 can continue their feeding movement.

Claims (16)

    17 101953
  1. A method of forming a closed wrapper around an article (R), in particular around paper rice, comprising placing the underside 5 of the article (R) on a spread sheet of sheet material (102), in particular a wrapping paper sheet, the area of the side surfaces (4,104) of the article (R) extending laterally over (102) sub-areas substantially corresponding to the surface to be covered; the object (R) is lowered and the sheet material sheet (102) is then placed on the side surfaces (4, 104); when the object (R) is pushed laterally, a sheet material sheet (102) is placed on the top side of the article (R) and the ends of the sheet material sheet (102) leading to each other are connected to each other, characterized in that the sheet material sheet is forced into the upper edge (62) before placing it on the top side of the object (R).
  2. A method according to claim 1, characterized in that the transverse fold is forced into the sheet material sheet (102) displaced in height and / or laterally relative to the upper edge (62) of the object (R).
  3. Method according to claim 1 or 2, characterized in that when lowering the object (R), its side surfaces (4,104) are stiffened by a compressive force acting on the upper side of the object (R), and / or when lowering and pushing 20 objects (R) beyond the planar material sheet (102). the sub-area is pulled out of the fixed base area (21b), whereby a larger sub-area is pulled from the fixed base area (21b), preferably against the force of the retaining means (24).
  4. Method according to one of Claims 1 to 3, characterized in that the sheet of sheet material (102) is kept tensioned when it is placed on the upper side of the object (R).
  5. Method according to one of the preceding claims, characterized in that a feed section of the planar material sheet (102) is arranged on the article (R) on the sheet material sheet (102) before the wrapping cycle, in which the article (R) is fed together with the sheet material sheet (102). (102) is preferably connected by a perforation (E) to the planar material strip (2), which perforation is removed when feeding the planar material sheet (102) by stopping the planar material strip (2) feeder (17) and possibly measuring and perforating the planar material sheet (102) ) during the wrapping cycle of the preceding object (R). 18 101953
  6. Method according to one of the preceding claims, characterized in that the object (R) is positioned relative to the planar material sheet (102) during the feed movement of the planar material sheet (102) and / or at least one part extending over the planar material sheet (102) is provided with an adhesive line. preferably in the region of one edge (5), the lateral displacement of the article (R) for placing the sheet material sheet (102) on the top side of the article (R) is preferably perpendicular to the feed movement of the article (R) and possibly a sheet material sheet extending over the front and back side after the wrapping period. 102) is closed.
  7. Apparatus for forming a wrapper around an article (R), the apparatus having a lowerable base surface (21) for placing the underside of the article (R) on a spread sheet of sheet material (102), in particular a sheet of wrapping paper; positioning means which, when moving the object laterally, place a sheet of planar material (102) on the upper side of the object (R); and binding means for joining the ends of the sheet material sheet guided 15 to each other, characterized in the region of the upper edge of the article (R) by a pivoting means having a pivot edge (132) for making a transverse fold.
  8. Device according to Claim 7, characterized in that the two-part base surface (21) has a movable base area (21a) and a fixed base area (21b), and in that the base surface (21) is horizontal and has a vertically movable base area. (21a), preferably with recesses (26) into which, when the base area (21a) is moved, a guide means (33, 34) for guiding the sheet of sheet material (102) onto the object (R) is guided, each recess (26) being provided with a guide means consisting of the two mutually adjustable combs (33, 34) and the guide means (33, 34) may be displaceable in the recesses (26) of the movable base area (21a), possibly transversely to the feed direction of the object (R), whereby the guide means (33, 34) has, on the one hand, combs (33) with approximately L-shaped teeth (133) and, on the other hand, combs (34) with inverted L-shaped teeth (134), and preferably in a co-guided position k the teeth (133, 134) of the ampoules (33, 34) may preferably form the inverted edge of the sheet of sheet material (102).
  9. Device according to Claim 8, characterized in that the distance between the guide means (33, 34) and the movable base area (21a) is adjustable, whereby a transfer device (39) is provided for moving the guide (35, 34) of the guide means 35 (33, 34). 35), or the movable base area (21a) is provided with a pressing means (31, 32) in the form of a name (31, 32) which acts on the lateral areas of the object (R) 19 101953 with a pressing force, the pressing means (31, 32) being a vertically adjustable base movable relative to the region (21a) and is preferably located in the guides (9,109,209) of the grippers (6,7,8).
  10. Device according to one of Claims 7 to 9, characterized in that the pivoting means is displaceable above and / or laterally relative to the upper edge (62) of the object (R).
  11. Device according to one of Claims 7 to 10, characterized in that a pivot rod (40) is arranged next to the pivoting means (132), which is arranged to be displaceable relative to the pivoting means (132), or the pivoting means (132) (38), in particular with a belt conveyor (38).
  12. Device according to one of Claims 7 to 11, characterized in that the fixed base area (21b) has a louver structure with a base rail (59) for the sheet material sheet (102) 15 arranged next to the movable base area (21a) and a fixed base area sheet (102). (21b), in particular at its base rail (59), has a retaining means (24) for an overlying sheet of sheet material (102), which is preferably movable relative to the fixed base area (21b), whereby below the fixed base area (21b) there is a movable a receiving means (38, 41) for receiving an object (R) from the base area (21a), which may have two spaced belt conveyors (38, 41), one of the belt conveyors (38) being configured to be height-adjustable to the other belt conveyor ( 41), of which the upper belt conveyor (38) is to be moved in the horizontal direction and to be directed towards the turning means (132) of the sheet material sheet (102).
  13. Device according to one of Claims 7 to 12, characterized in that for feeding the sheet material sheet (102) and the object (R) there is a feeding means with grippers (6, 7, 8) each having guided gripping arms transverse to the direction of movement of the object (R). movable in the wrapping device and guided to guides (9, 109, 209) located above the base surface (21), the outer guides (9,209) being laterally displaceable.
  14. Device according to Claim 13, characterized in that the feeding means are formed in such a way that the longitudinal side (4, 104) of the object (R) is guided on the dividing line (61) between the base areas (21a, 21b).
  15. Device according to one of Claims 7 to 14, characterized in that a base bench (1) is arranged adjacent to the base surface (21), on which a movable stop (15, 115) with lateral guides (55) for the object (R) is arranged. (R) for positioning.
  16. Device according to one of Claims 7 to 15, characterized in that a dispenser (23) is provided for applying the adhesive line. 21 101953
FI931351A 1992-03-28 1993-03-26 Method and apparatus for forming a closed housing around an object FI101953B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE4210231A DE4210231A1 (en) 1992-03-28 1992-03-28 Method and device for forming a closed envelope around an opposite city
DE4210231 1992-03-28

Publications (4)

Publication Number Publication Date
FI931351A0 FI931351A0 (en) 1993-03-26
FI931351A FI931351A (en) 1993-09-29
FI101953B1 FI101953B1 (en) 1998-09-30
FI101953B true FI101953B (en) 1998-09-30

Family

ID=6455321

Family Applications (1)

Application Number Title Priority Date Filing Date
FI931351A FI101953B1 (en) 1992-03-28 1993-03-26 Method and apparatus for forming a closed housing around an object

Country Status (4)

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EP (1) EP0563649B1 (en)
JP (1) JP3047341B2 (en)
DE (2) DE4210231A1 (en)
FI (1) FI101953B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9290283B2 (en) 2012-03-16 2016-03-22 Pemco Inc. Method and apparatus for wrapping a folio ream of paper
DE102019120679A1 (en) * 2019-07-31 2021-02-04 Khs Gmbh Device and method for the formation of bundles from individual packs

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE503340C (en) * 1928-04-20 1930-07-24 Arthur Terrey Output and packing device for printing presses
US2685157A (en) * 1949-07-09 1954-08-03 Lynch Corp Machine for wrapping articles and control therefor
DE1096822B (en) * 1958-08-08 1961-01-05 Erich Moeckel Device for counting, collating and wrapping flexible sheets, for example made of paper
DE1114433B (en) * 1960-05-17 1961-09-28 Carl Drohmann Ges Mit Beschrae Wrapping machine for especially prismatic objects or stacks of different format heights
GB929439A (en) * 1960-11-04 1963-06-26 Platt Brothers & Co Ltd Improvements relating to article feeding machines
SE376211B (en) * 1968-06-11 1975-05-12 Wrapmatic Spa
FI81759C (en) * 1988-12-16 1990-12-10 Veikko Ilmari Janhonen Anordning foer sluta en foerpackning runt en vara, som skall foerpackas.

Also Published As

Publication number Publication date
FI931351D0 (en)
JPH0640426A (en) 1994-02-15
DE4210231A1 (en) 1993-09-30
DE59306850D1 (en) 1997-08-14
EP0563649A2 (en) 1993-10-06
FI931351A (en) 1993-09-29
FI101953B1 (en) 1998-09-30
EP0563649A3 (en) 1994-03-23
FI931351A0 (en) 1993-03-26
EP0563649B1 (en) 1997-07-09
JP3047341B2 (en) 2000-05-29

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