ES2300066T3 - TAIL APPLICATION DEVICE FOR THE APPLICATION OF TAIL ON COMPONENTS OF PIPE SECTIONS OR TAPE SECTIONS. - Google Patents

Abstract

The glue spreading device spreads groove on components of tube or web sections being transported past the device. It includes a glue remover (10) with a rope tasting glue transporter dipping into a glue reservoir, and the transmission device for transmitting the glue onto the components in the form of a glue trace on the tube or web sections. The width of the glue trace can be varied on the transmission device at an angle to the direction of transportation and (z) of the tube or web sections.

Description

Queue application device for glue application on components of pipe sections or Tape-shaped sections.

The invention relates to a device of queue application for queue application on components of sections of tubes or sections in the form of tape according to the preamble of claim 1 of the patent.

In the manufacture, for example of bags or sacks, which are preferably constituted of paper, it is necessary to apply only on parts of the pre-products or intermediate products that are necessary for the manufacture of bags or sacks. In this case, they are, in general, sections in the form of a band or, when they have already been joined to form a tube, they are also sections of tubes. If, for example, a paper cone or a paper bag with a bottom is to be manufactured, which is formed by simply bending one end of the tube section on an outer side, then, in general, the tube section in the area of the end to bend on one side with tail. Such tube sections are frequently transported in parallel to their tube axis through a device for manufacturing these bags. The fold edge, around which one end of the tube section is bent, then extends transversely to the transport direction of the tube sections. The tube section is often transported for this purpose with the end to be folded in front. Especially for the provision of components of the tube sections or sections in the form of a band with glue, these sections are retained with retention means, for example clamping pieces or clamps, on a transport device. In general, this transport device is a rotating body of the drum type, which is provided with grooves parallel to the axis of rotation, in which bending blades can press the section in the form of a band or tube section under pressure. for folding. The zones
of the transport device adjacent to the grooves serve as counter support during application of the glue.

The glue is generally made available within the glue application device in a glue container, for example a glue container and is transported through the means of transporting the glue on the components to be glued in the sections. of tube or band-shaped sections. The transport means thus define a transport route for the queue. The glue container may have an elongated bottom hole. Under this hole at least one means for the extraction of the tail is disposed, which penetrates the tail container and thus extracts tail and transmits it to other means of transmission of the tail. In general, these means for tail extraction are configured as rollers. But they can also be configured as a surrounding tape, which is guided around
of rollers. The tail occupies the surface of the rollers or the surface of the tape essentially in its entire width.

The tail transported with the means of tail extraction is received at least in part by a transmission device To this end, the transmission device frequently presents components and / or exterior surfaces planned for the transport of the tail. These components can be in relief After the transmission device has status in operative connection with the means of extracting the glue, components and / or external surfaces of the device of transmission are most of the time fully driven with tail. Queue is transmitted through a contact in the form of a tail cord over the tube sections or Band-shaped sections. An embossed component can be stamping, for example, as a format piece, which is adapted to the format of the components to be provided with glue of tube sections or band-shaped sections, that is, it has the extension of the components to be glued both in the direction of the tube axis as also transversely to the axis of the tube. In the manufacture of bags described at the beginning with a folded end, this piece of format is often an element of the type of stamp, provided with a rectangular surface, which revolves around an axis. At case of changing the format of the tube sections or sections in band shape, at least the width of the element of the type of stamp to the new width of the bag.

But the formatting pieces can be also applied alternatively on a roller. If of a change of format of the tube sections or sections in band shape, format pieces can be extracted and can be replace with other formats of this type.

Therefore, in application devices glue described in the state of the art, in the case of a change of format of tube sections or band-shaped sections, the transmission device must be replaced or modified or when Less components of it. Especially in the case of manufacturing of bags with folded ends, the element of the type of stamp, whose width is also set the width of the tail cord over tube sections or sections in the form of band, at least with each modification of the width of the tube or of Band-shaped sections. Instead, it can be maintained with frequency the extension of the stamp type element in the direction of the axis of the tube or band. This leads to unnecessary interruptions of the entire device and, in addition, it is very expensive, since the means of transmission are only accessible with difficulty inside the device. Thus, both things lead to high conversion costs in the case of a change of format of tube sections or band sections or well of the bags made from them.

Patent publication GB 896 291 describes a glue application device, in which the extension of the tail cord can be modified transversely to the direction of transport of the bags. To this end, a roller collaborates with the tail extraction means, which has triangular recesses. The tail dragged by the tail extraction means can pass, in part, the recess, another part of the tail is removed through the roller by the tail extraction means. Through the rotation of the roller, different cross sections of the triangle enter
in contact with the tail extraction means, so that the width of the tail cord can be adjusted.

However, in this provision it is a inconvenient that the tail cord profile is flattened towards the outside, so that a glue application is no longer guaranteed uniform over the width of the bag. In addition, with the rotation of cylinder also modifies the height of the tail cord. For the therefore, it cannot be adjusted separately.

Therefore, the purpose of this invention is to propose a device for the application of glue on components of tube sections or sections in the form of band, in which a uniform application of the glue is possible about the width of the bags to be glued.

According to the invention, this task is solve through the characteristics of the part of characterization of claim 1. Accordingly, the tail cord extension can be modified already on the transmission device transversely to the direction of transport of tube sections or band-shaped sections. In this case and then it is understood with the concepts "extension" and "width" the extension transversely to the transport direction of the tube sections or sections in band shape.

Through this measure, the tail occupies only an indeterminate surface on at least one device of transmission or on the components and / or exterior surfaces that They are intended for tail transport. Cord extension tail adapts, therefore, even before the contact of the transmission device and tube sections or sections in the form of a band, to the width of the surfaces to be provided with tail of tube sections or band-shaped sections. This way, a tail cord of the width can be transmitted provided on tube sections or band-shaped sections, without, in the case of a modification of the width of the tube sections or band-shaped sections, must be performed a modification of the shape of the transmission device. If he Transmission device features raised components, by example, for queue transport, then these can remain in the taimen transmission device in the case of a format change of tube sections or sections in the form of Bag band to produce. The width of the components of the transmission device intended for tail transport, for example, therefore, of relief parts such as format pieces or elements of the type of stamp, you don't have to adapt already to the width of the surfaces of the sections of tube or sections in the form of a band to be provided with glue. The components intended for tail transport may present widths, which are greater than the width of the tube sections or of band-shaped sections processed for application respective production. Therefore, it is sufficient to provide these components with a width, which corresponds to the maximum width of tube sections or band-shaped sections that can be processed on the device. You can delete a storage from such components of the transmission device, that is, of embossed components such as elements of the type of stamp or format pieces, which results in a reduction of costs, in addition to the reduced downtime of the device for format change.

With the queue application device according to the invention still others can be achieved advantages. Thus, for example, the width of the tail cord in or on the means for extracting the tail. For this purpose, you can also receive a new queue for the tail extraction means. However, it is also possible apply the tail cord on the means for extracting glue only to an extent that essentially corresponds to the rear extension of the tail cord over the tube sections or sections in the form of a band. In this way, the whole tail transmitted by the tail extraction means is received at through the means of transmission, so that - unlike a device of the prior art - the tail cannot be dried surplus in the media for tail extraction. This fact is shows in a particularly clear way when the means for Tail extraction are configured as roller. In the glue application devices of the prior art, the roller ends were regularly contaminated with glue dry or dry Especially the latter often led to a high maintenance expense, which is greatly reduced by a device according to the invention.

In a preferred configuration of the invention, means of limiting the flow of tail are provided, which are They can be inserted in the tail transport route. In this way Queue flow can be limited by sections. For example, queue flow limiting means can be inserted into the tail transport path such that through the position of the queue flow limiting means, the tail cord extension transversely to the direction of transport of tube sections or band-shaped sections. Through the insertion or the position of means of tail flow limitation can therefore be adapted tail cord width in the case of a change in format of the bag to be produced with an especially reduced expense. The means of tail flow limitation may in this case have different functions. They can remove the tail, which extends beyond the width of the tube sections, again outside the means of tail or transmission device removal. This can be perform through scratching or scraping. Can also be provided means for limiting the flow of tail arranged in hopper shape, which limit the tail cord applied with a initial width on the tail extraction means in its extension transversely to the transport direction of the tube sections or band-shaped sections during the course of tail transport. With other means of limiting the flow of tail can be adapted and the initial width of the tail cord to the width of tube sections or band-shaped sections.

In this case, it is especially preferred that the or the means of limiting the flow of tail can be displaced transversely to the transport direction of the sections of tube or band-shaped sections, that is, along the axis of the means of rotating tail transport. In this way, in the In case of a change in the format of the bags to be produced, you can adapt the tail cord extension in a special way simple.

In another advantageous configuration of the invention, at least one means of limiting the flow of tail can be a side wall of the tail tank. According to the width of the glue zone of the tube section or band-shaped section, the lower outlet opening of the glue deposit, so that at the beginning of the track tail transport can influence the extent of the tail cord For this purpose, they can also be moved only sealing elements, which hermetically close the gap between the glue deposit and the means for tail extraction, so that no tail is lost through This interstitium

In another preferred embodiment of the invention, at least one means of limiting the flow of tail is a strip-shaped element. With this strip-shaped element you can remove glue from at least one tail extraction means and / or from the transport device or the glue application in width. This strip-shaped element is you can apply in this case with a song or parts of it in the surface of the tail extraction means. The shaped element strip acts in this case as a scraper blade and can receive glue from the surface and can generate a tail cord of the expected width. In this case, the received queue can be drive in a proper way, for example through a system of reception or transmission system, back to the container of tail. Such strip-shaped elements can be displaced from one very simple and, therefore, comfortable way in relation to means for tail extraction. This can be done with manual or motorized means. In this case, it can also be used an element in the form of a movable strip in combination with a glue tank with at least one movable side wall or in combination with a sliding tail tank.

In this case, it is advantageous that the element in strip shape is constituted at least in part of metal. When the surfaces of the tail extraction means are constituted of rubber or similar material, this way a effective collaboration, so that the queue is received in a way Reliable through the strip-shaped element.

Often, the surface of the means of tail extraction consists of a metal, for example of brass. Then it may be advantageous that the strip-shaped element is constituted at least in part of plastic.

Other embodiments of the invention are deduced from the autonomous description and the claims.

In the individual figures:

Figure 1 shows an outline of the beginning of a device according to the invention for the application of glue In the side view.

Figure 2 shows a view along the line of intersection II - II in figure 1.

Figure 1 shows an outline of the beginning of a device 1 for the application of glue on components of tube sections or band-shaped sections. A tube section 2 is rotatably housed on a transport drum 3 swivel, which is rotatably housed in a rack of machine not shown, retained with the help of the devices retention not described in detail and transported in the direction of transport z. The tube section rests on an opposite support 4 towards the folding blade. Through the collaboration of the folding blade not shown with opposite support 4 is provided the tube section with a folded edge 8. Above the drum transport is arranged a tail transmission device 5, which is swiveled around axis 6 in the machine frame not shown. In operation, the drum of transport 3 rotates in the direction of arrow A, the device tail transmission 5 rotates in the direction of arrow B. In the Tail transmission device 5 are placed, by put it like that, tail segments 7 at a distance from axis 6. This Distance can be constant or variable. In particular, it is conceivably that the distance is modified, for example, through a cam guide, during the rotation of the drum of transport 3. Queue segments 7 transmit queue in the zone of the folded edge 8 on the tube sections 2, so that after a subsequent flexion of the folded end 9, it is covered Totally glued area. In the course of the rotation of the transport drum 3 folds through a non-component represented, for example a roller that rolls on the surface of the transport drum 3, the folded end 9 on a tube section surface 2.

Folded edges 8 are introduced, as already has described, through a folding knife not shown, in the tube section. This folding blade is fixed mobile in the queue transmission device. The distance of the folding blade with respect to axis 6 is varied through a cam control, so that the folding blade is introduced, at the passage of the tail cylinder 10, slightly towards the axis 6, to come into contact with the tail rollers 10. In addition, the cam control is used for the pressure introduction of the tube section 2 in slot 11 of opposite support 4 for the folded edge generation.

The tail cylinder 10, from which the Queue segments 7 receive the queue, it is housed rotating on side frames 12, one of which is depicted in figure 1 and that are connected to the frame of the machine, for example through sleepers or other elements of Union. Above the tail cylinder 10 a glue tank 13, which has a hole in its lower side elongated, which is covered, however, entirely by the tail cylinder 10. In this way, the tail that comes out through a bottom hole of the glue tank 13 is dragged completely by the tail cylinder 10. To prevent the exit of the glue between the side walls 14 of the glue tank 13 and the tail cylinder 10, there are provided elements of shutter 15.

The circumferential speed of the cylinder of glue 10 is sized such that the surface of the tail cylinder 10 has moved during a complete rotation of the tail transmission device 5 to the extent of the width of the tail segment 7 or to the extent of the sum of the widths of the tail segments In this case, you can vary the speed circumferential. This ensures that it is completely removed. the tail that adheres to the tail cylinder.

A side frame 12 is provided with recess 16. In this recess 16 a roller 17 is arranged, which can be turned by means of screw 18. On the vertex top of the roller 17 is a strip 9 of the type of blade, which extends in the axial direction of the tail cylinder 10. The roller 17 can now move the strip 19 in the axial direction of the tail cylinder. Strip 19 is supports with a lateral edge in the tail cylinder 10 and receives parts of the tail carried by the tail cylinder 10 from this cylinder. In this context, it should be stressed that through the grip of the strip 19, it can also be moved directly with the hand. This is especially possible when the strip can be grabbed from outside the side frame 12. In this case, you can dispense even with screw 18, roller 17 and the recess 16.

Figure 2 shows the section view II-II in figure 1. In this figure you can see again the side frames 12, the tail cylinder 10, the screws 18, rollers 17 and strips 19. In a way not represented, a retaining frame 20 is connected to the glue tank, with side frame 12 and / or with frame machine. In this retention frame 20 it is housed movable a retaining beam 21. Directional travel essentially radial of the tail cylinder 10 is realized through an adjusting screw 22, which is screwed into an inner thread made in the retaining frame 20 and which is housed in swivel shape, but not movable in retaining frame 20. This retaining beam 21 serves as a support for strip 19, so that they remain stationary also during the rotation of the tail cylinder 10. In this retaining beam 21 are made some guides, which allow a movement of the strips in the axial direction of the tail cylinder 10, but prevent a displacement in radial direction.

In addition, a scraper bar is provided not visible. With this scraper bar you can influence the height of the tail cord in the tail cylinder 10. For displacement a second adjustment screw 23 is screwed into a internal thread made in retaining frame 10. With this adjusting screw 23 a fine adjustment is made in relation to the tail cylinder 10.

The bar 20 and the scraper bar may be configured as a single component, which therefore combines Both functions themselves.

Therefore, in general, through rotations the size of step 24 can be set on screws 18, 22, 23 and, therefore, the dimension of the tail cord, so that only a predetermined amount of queue reaches the segment of tail. Especially the width of the surface occupied by the tail on the tail cylinder 10 and, therefore, also on the tail segment 7 can be regulated in a simple way through of the device shown.

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Claims (11)

1. Glue application device (1) for glue application on tube section components or band-shaped sections (2), which (2) are constituted preferably paper and that are transported successively to along a transport direction (z) in front of the device application queue (1), in which the application device glue (1) comprises means for transporting glue, which carry the tail from a tail container (13) along a path of glue transport to the components to be glued in the sections of tube or band sections, in which the means of transport of glue comprise at least the following components:

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at least one means for tail extraction (10) with which tail can be extracted (10) from the glue container (13) and can be transported, in which the glue extraction medium (10) contains at least one medium of rotating tail transport (10), which (10) penetrates the cola container (13),

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at least one device transmission (6, 7) for the transmission of the extracted tail and transmitted by the tail extraction means (10) on the components of tube sections or band-shaped sections (2), which transfers by contact a tail cord over the tube sections or band-shaped sections,

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in which the extent of tail cord over the transmission device (6, 7) is variable transversely to the transport direction (z) of the tube sections or band-shaped sections (2) and in which means for limiting the flow of tail (14, 19) are provided, that can be introduced in the queue transport route, with which can be limited by sections the flow of tail, so that through the position of the flow limiting means tail extension can be defined transversely to the transport direction (z) of the sections of tube or band-shaped sections (2),

characterized in that the tail flow limitation means (14, 19) can be displaced transversely to the transport direction (z) of the tube sections or band-shaped sections (2). 2. Glue transport device (1) according to claim 1, characterized in that at least one means for limiting the flow of glue (14, 19) comprises a side wall (14) of the glue container (13). 3. Glue transport device (1) according to one of the preceding claims, characterized in that at least one means of limiting the flow of glue (14, 19) comprises a strip-shaped element (19), with which tail can be removed from at least one means for tail extraction (10) and / or from the transmission device (7). 4. Tail transport device (1) according to the preceding claim, characterized in that the strip-shaped element (19) is in operative connection with parts of one of its lateral edges with at least one means for tail extraction (10) and / or with the transmission device (7). 5. Glue transport device (1) according to one of the preceding claims, characterized in that the strip-shaped element (19) is constituted at least in part of metal. 6. Glue transport device (1) according to one of the preceding claims, characterized in that the strip-shaped element (19) is constituted at least in part of plastic. 7. Glue transport device (1) according to one of the preceding claims, characterized in that the strip-shaped element (19) is arranged essentially perpendicular to the surface of at least one means for glue extraction (10) . 8. Glue transport device (1) according to one of claims 2 to 9, characterized in that at least one means of limiting the flow of glue (14, 19) is housed in the machine frame. 9. Glue transport device (1) according to the preceding claim, characterized by at least one control element (17, 18) arranged in the machine frame, with which the movement of the limiting means can be performed of the tail flow (14, 19). 10. Device for the manufacture of bags, characterized by a device (1) for the application of glue according to one of claims 1 to 11. 11. Procedure for queue application on components of tube sections or sections in the form of band (2), which (2) are constituted with preference of paper and that are transported successively along a transport direction (z) in front of the device queue application (1), in which the queue is transported from a glue container (13) along a tail transport path through tail transport means to the components to glue the tube sections or band sections, in which the tail transport means comprise at least the following components:

\ sqbullet

at least one means for glue extraction (10), which is extracted (10) from the glue container (13) and transports it, in which the tail extraction means (10) It contains at least one means of transporting rotating tail (10), the which (10) penetrates the glue container (13),

\ sqbullet

at least one device transmission (6, 7) for the transmission of the extracted tail and transmitted by the tail extraction means (10) on the components of tube sections or band-shaped sections (2), which transfers by contact a tail cord over the tube sections or band-shaped sections,

\ sqbullet

in which the extent of tail cord over the transmission device (6, 7) is variable transversely to the transport direction (z) of the tube sections or band-shaped sections (2) and in which the tail flow limiting means (14, 19) are introduced in the tail transport route, with which it can be limited by sections the tail flow, so that through the position of the means of limiting the flow of tail can define the tail cord extension transversely to the direction of transport (z) of the tube sections or sections in the form of band (2),

characterized in that the tail flow limitation means (14, 19) can be displaced transversely to the transport direction (z) of the tube sections or band-shaped sections (2).