JP3365795B2 - Apparatus for attaching web sections or labels to goods - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a web section coated on one side with an adhesive while the articles being conveyed are aligned in a flat arrangement. Or a sticking apparatus for sticking a label to an article (more specifically, sticking a bottom cover sheet to the bottom of a bag), wherein the article is received in a web section and conveyed substantially tangentially to the web section. The present invention relates to a sticking apparatus having a rotary drive type supply cylinder for transporting a web section to the web section, and a transport apparatus for transporting the web section to a reject conveyor when necessary (for example, when there is no corresponding article). BACKGROUND OF THE INVENTION A common need in manufacturing plants is to supply web sections or labels as parts to other articles in a controlled manner during the manufacturing process, and in some cases to Coating the web section or article with an adhesive and joining them together. For example, when manufacturing bags from single or multiple sheets of paper or synthetic resin tubular sections, the web sections or labels with glue on one side may be raised and folded inward on the side gussets. , Which are placed on the bottom as a bottom sheet and glued. In the case of a paper bag, the bottom cover sheet is provided with a coating of a water-soluble adhesive, and the bottom cover sheet of the synthetic resin bag is adhered with an adhesive-containing solvent. For this purpose, according to the invention, the individual bottom cover sheets can be cut from the web or torn from the web along the perforations, so that the adhesive can be applied continuously. This is because the solvent evaporates in a very short time by gripping the tip of the cover sheet web with the tongs and tearing or separating the tip from the cover sheet web.
Next, the adhesive-coated cover sheet is supplied to a bottom portion (which can also be coated with an adhesive) via a transfer cylinder (the transfer cylinder is also provided with a tongue). Then, it is pressed against the bottom and adhered. [0003] In order to keep the surrounding environment from being contaminated by solvent vapors, it is a general trend to use solventless adhesives. However, such adhesives have a very low rate of bonding, so that the surface of the web section coated with the adhesive must be conveyed out of contact and must be stuck to the bottom of an open bag. No. If, during the manufacturing process, the bag is no longer present in the arrangement of bags in which the bottom sheet is to be provided, the bottom cover sheet that was to be used for this purpose and coated with adhesive is removed and the It needs to be unobstructed. Such removal by carrying out the web section must be done so that the adhesive coating does not soil any parts of the device. [0004] It is therefore an object of the present invention to provide an apparatus of the type mentioned at the outset in which a web section or label can be regularly applied to an article and the article no longer exists in the line. In some cases, it is an object to provide a device that can eliminate a web section or label such that the surface to which the adhesive coating is applied does not stain components that are sensitive to adhesive contamination. [0005] In a device of the type mentioned at the outset, the above object can be achieved according to the invention. Because the supply cylinder is designed in the form of a suction cylinder, the driven segment (segment that cooperates with the supply cylinder to supply the web section to the reject conveyor) is swung outside the cylindrical contour of the cylinder. This is because that. In the case of the device according to the invention, the web section to be applied (or pressed) is held on the transport path by the suction air of the supply cylinder from the introduction conveyor to the application position on the article. Thus, the side on which the adhesive coating is applied does not come into contact with components of the device that are sensitive to contamination. When the web section needs to be cleared (i.e., removed), for example, because the article is no longer present, the driven segment (which strips the label from the suction hole of the supply cylinder) transports the label, The labels are conveyed to an exclusion conveyor (ie, a clear conveyor) that cooperates with the supply cylinder. To ensure that the web section to be rejected is conveyed to the reject conveyor, the driven segments are forked and, when pivoted or moved outward, the driven segments Preferably, at the entrance end of the reject conveyor, it is moved between the corresponding protrusions offset like a comb. The fork-shaped protrusion at the input end of the reject conveyor can be formed by the front end of a split conveyor belt running on bend rolls parallel and at a distance from each other. According to a preferred embodiment of the invention, the driven segment is in the form of a finger-like tube supplied with suction air, so that the web section to be removed can be transported reliably, and the cylindrical outer wall of the supply cylinder Are provided with suction holes in the components of the driven segment arranged in the above. According to another aspect of the invention, in order to ensure that the label or web section to be removed can be lifted from the supply cylinder without displacement.
The suction effect of the suction hole of the tube constituting the comb-shaped segment can be configured to be greater than the suction effect of the suction hole of the supply cylinder. With this design,
Fingered tube, which is moved or pivoted outward for the purpose of removing the label
Thus, the web section to be eliminated can be reliably peeled off from the suction hole of the supply cylinder. A groove is formed between the suction holes arranged on the circumferential line of the supply cylinder, so that the finger tubes of the comb-like segment can pivot within the surrounding surface of the supply cylinder during normal operation. It is preferred that they are pivotally connected. According to yet another configuration, a finger-like tube of the comb segment is connected to the tube, which is pivotally attached to the supply cylinder and supplies suction air, substantially radially,
And the tubes are connected to a drive lever that pivots them, the free end of which carries a follower roller or shoe running on an operating cam fixed to the frame. This configuration allows the comb segments to be activated when a need arises to eliminate one or more web sections. The tubes that support the finger-like tubes can be supported on the tubes that hold the tubes, and the walls of these tubes are provided with holes or slots through which suction air passes. A simple actuation is possible if the tubes are actuated by springs which press them into the inward pivot position of the finger-like segments. The spring is conveniently formed of a torsion spring fitted around the tube. In order to allow the comb segments to swing outward if necessary, the cam comprises a cam portion which is moved or rocked by a drive, which cam portion is bridged when not actuated and has a comb shape. The segment swings outward. [0010] Another feature of the invention is that the finger tubing responds to press a web section or label against the article. For this purpose, the cam has a second cam part, which swings the comb segments outward, transports the web section and presses against the article. In this case, the pressing operation is
This is done by the action of a spring in response to the outward swing of the segment. The action of the spring is disabled when the rollers or shoes of the drive lever run on the concentric parts of the cam. Another feature of the present invention is that the supply cylinder comprises a ring, which is supported on a cylindrical timing body for controlling the supply of suction air. This design is a simple way to control the supply of suction air from the timing body to the supply cylinder. An opening is provided in the inner wall surface of the supply cylinder, and the opening is opened and closed in cooperation with an opening or a slot provided in the cylindrical timing body. Thus, the cylindrical ring of the supply cylinder also has the function of a slide valve. The timing body is separated by a wall.
It has two chambers, each of which has a separate suction air port, and it is more convenient to maintain different degrees of vacuum in both chambers by the vacuum supplied through the ports. Become. The timing body is divided into two chambers by axially extending walls, which allows for different levels of vacuum to vary along the circumference of the timing body. The segments which are swung outwards in a predetermined manner are activated when a higher vacuum is applied. A low vacuum level fan-shaped chamber of the timing body is associated with the reject conveyor, whereby in this section the outwardly swung segments are supplied with high vacuum level suction air. In order to enable a simple and controlled supply of suction air, the timing body is provided with circumferential slots forming both chambers, which slots are provided in the suction air duct of the cylindrical ring. The suction air is supplied by a predetermined method. According to a preferred embodiment of the present invention, a circumferential groove is provided on the outer wall of the timing body adjacent to a low-vacuum chamber having a fan-shaped cross-sectional shape, and the groove has a high vacuum and a finger-like shape. It communicates with a chamber that supplies suction air to the segments. With this design of the invention, the finger-like segments are supplied with suction air with a higher degree of vacuum than the suction air holes of the supply cylinder. To allow suction air to be supplied to the finger-like segments via the circumferential groove, the groove is continuous adjacent to the high vacuum chamber by a circumferential slot opening into the chamber. According to a further feature of the present invention, a hole is provided in the inner wall of the annular supply cylinder, the hole opening into the tube supporting the finger-like tube, and Is supplied with vacuum through the groove and a slot adjacent to the groove. According to another embodiment of the present invention, the hole is provided in a ring that is rotatable and locked with respect to an annular supply cylinder, and a tube member supporting the fork-shaped segment is connected to the ring. I have. Thus, by simply rotating and locking the ring, adjustments can be made to accommodate various forms of labels or web sections. This adjustment is made by aligning the leading end of the fork-like segment or finger tube with the leading edge of the label or web section transferred to the supply cylinder. According to yet another aspect of the present invention, when the web section is cut from the label web, the supply cylinder is provided with an axial cutter bar which engages the supply cylinder. It is adapted to cooperate with the knife of the set rotary knife support. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS At substantially the center of a housing 1, a cylindrical member 2 is fixedly connected to the housing 1. The lower and upper portions of the cylindrical member 2 are designed as support members. The cylindrical member 2 is designed as a timing body in the form of the suction member 3, which will be described later with reference to FIGS. The cylindrical member 2 supports a driving gear wheel 5 via a ball bearing 4, and the driving gear wheel 5 meshes with a pinion 6. The pinion 6 is keyed to a shaft 7 supported on the housing 1 via ball bearings 8 and 9. A support member 11 is fixedly connected to the shaft 7 via a clamp ring 10. Support member 11
Has three knife members 12 arranged at equal intervals around this periphery. These knife members 12
It cooperates with a counter knife 13 fixedly connected to the support member 14. The lower part of the support member 14 is screwed to the drive gear wheel 5 and the upper part of the support member 14 is a ball bearing 15.
Is supported by a suction member (that is, a timing body) 3 constituting the upper part of the cylindrical member 2. As shown in FIG. 7, the segmented suction ducts 16 are each associated with one knife 13 and are connected to a support member 14, and the suction air is passed through holes in the support member 14. Is supplied. Support member 14
At approximately the center of the support member 14 has a circumferentially extending recess, which is
Occupied by This ring 18 is
, But is typically clamped to the support member 14 by a set screw 19. This means that the ring 18 rotates with the support member 14 around the cylindrical suction member 3. A duct hole 20 is provided in the ring 18, and a flange 22 is inserted into the duct hole 20 (a hole 21 is also provided in the flange 22). Each flange 22 is a cylindrical tube 23
And three tubes 2 as shown in FIG.
3 are arranged in the circumferential direction. Each tube 23 is surrounded by a sleeve 24 arranged to be rotatable with respect to the tube 23. A plurality of fingers 25 are fixed to each sleeve 24 in rows that are spaced apart from each other. These fingers 25 are hollow, and suction air is supplied through holes 26 provided in the tube 23. A suction opening 27 is provided on the outer periphery of the finger 25. As shown in FIG. 3, the upper end of the sleeve 24 is stepped, and a lock washer 28 is securely screwed to each stepped end. Lock washer 2
8 has a short lever 29 (FIG. 6). At the end of the short lever 29, a follower roller 30 that can rotate freely is provided.
Is attached. These follower rollers 30 are in contact with a disc cam 31 (FIG. 3), and the disc cam 31 is fixed to an upper portion of the housing 1 via tubes 32 and 33. The disc cam 31 has a concave portion 34 depressed inward as shown in FIG. Cam (recess) in which follower roller 30 is depressed inward during normal operation
In order not to run on the part 34, this part 34 is provided with a bridging member 35 which is pivotally connected to the housing 1 by screws 36. A vertically downwardly projecting pin 37 is engaged with this guide member or bridging member 35, and the pin 37 is connected to a piston / cylinder unit 39.
Is fixed to the end of the piston rod 38. The cylinder 40 of the piston / cylinder unit 39 is pivotally mounted above the housing 1 and
Pin 37 extends through slot 41. As shown in FIGS. 4 and 5, the suction member 3 is a cylindrical member closed by an upper lid 42. This cylindrical member is connected to the upper part of the cylindrical member 2 by a method not shown in detail. The suction member 3 is divided into two fan-shaped suction plenums 4 by an angle-shaped partition 44 (FIG. 6).
5 and 46. The suction plenum 45 is connected via a tube 32 (FIG. 3) to a vacuum source, and the suction plenum 46 is connected via a tube 33 to a vacuum source. The outer wall 47 of the suction member 3 has a central constriction 48, and the circumferential length of the constriction 48 is equal to about １ ／ of the entire circumference of the suction member 3. The outer wall 47 has a slot 49,
50 is provided through which air is drawn into the suction plenum 46. Air is sucked into the suction plenum 45 through a slot 51 provided in the outer wall 47. The slot 51 is formed by three sections in the circumferential direction as shown in FIG. That is, the slots 51 each start with a partition 44 forming a suction plenum 46 and extend through the suction plenum 45 to a continuous wall 47, as shown in FIG. The upper and lower slots 51 provided in pairs with each other supply suction air to suction holes of the cylindrical ring (support member) 14,
On the other hand, the central slot 51, which opens laterally in the groove formed by the central constriction 48, provides a controlled supply of a higher vacuum suction air to the finger-like segments 25. Help. As shown in FIG. 2, each bag is moved through a labeling device by a pair of belts 52 with its bottom upright. Next, a bottom cover sheet is attached to the open bottom 53 of these bags.
For this purpose, the bottom sheet web 54 is
The individual cover sheets are fed into webs 54 using individual knife members 12 supplied by
From the desired length. Cover sheet web 54
2 is supplied to the knife 13 as shown in FIG. 2 (that is, the web 54 has not been cut yet). This tip is a finger 25
And the suction duct 16 'of the suction duct 16 are gripped and held. As the support member 14 and the ring 18 further rotate, the continuously supplied cover sheet web 54 engages the suction duct 16 of the support member 14. Further rotation causes the mating knife 13 ′ to come into contact with one knife member 12, whereby a cover sheet having the desired length is cut from the cover sheet web 54. Set screw 1 shown in FIG. 3 based on the length of the cover sheet
After slightly loosening 9 and rotating ring 18 with respect to support member 14, set screw 19 is tightened again. This twist adjustment resets the distance between the overlying group of fingers 25 and the subsequent respective mating knife 13, so that the tip of the cover sheet web 54 is brought to the suction opening 27 of the group of fingers 25. Means that it can always be captured. When the bag with the bottom 53 upright is completely supplied, the follower roller 30 of the finger 25 runs on the cam 31. At this time, the concave portion 34 of the cam track is covered by the bridging member 35 so that the follower roller 30 can travel along the arc. However, as soon as the bottom 53 of the bag is not present and its absence is detected, the bottom sheet for this bottom needs to be cleared and removed. For this purpose,
The piston / cylinder unit 39 is actuated to swing the bridging member 35 counterclockwise around the screw 36 forming the pivot axis to deviate from the arcuate cam path. Thereby, the follower roller 30 moves through the concave portion 34,
In addition, since the fingers 25 pivot around the cylindrical tube 23 in the counterclockwise direction, the sheets supplied by the respective fingers 25 are transferred to the conveyor device 56 (the conveyor device 56 uses a plurality of belts parallel to each other). The finger 25 moves like a rake tooth between these belts). Since the operation of the finger 25 is to function as an escape route or switch, the finger 25
It is important that there is always a high vacuum in the suction plenum 46 rather than in the suction plenum 45 so that the suction action of the suction duct 16 is greater than the suction action of the suction duct 16. This will be described below. As shown in FIGS. 3, 6, and 7, the left outer wall 47 of the suction member 3 shown in FIGS.
Extends only from the top to the bottom over an angular range of about 110 °. This is because the holes 17 which move this part through the outer wall 47 (these holes 17
Responsive to the supply of air to the suction duct 16 and responsive to the supply of air to the fingers 25) along the circumferential length of the slots 49-51 and the groove (constriction) 48. It means that only vacuum is supplied. The angle range (outer wall) 47 between the slots 51 is a range in which the sheet is not supplied, that is, the bottom 5
3 immediately after the transfer of the cover sheet to No. 3 until the bottom cover sheet web 54 is supplied and a new cover sheet is received. FIG. 7 shows that the front end of the bottom cover sheet web 54 acts on the suction duct 16 (the suction duct 16 is connected to the high vacuum plenum 45 through the hole 17), and Shows a state that is captured by. The fingers 25 arranged between the suction ducts 16 which are vertically spaced apart from each other are supplied with vacuum since the corresponding holes 20 are still covered by the outer wall 47 as shown in FIG. Not. However, these holes 20 have been successfully communicated with a high vacuum so that the tip of the cover sheet web 54 is sucked and captured by both the suction duct 16 and the finger 25. When further rotated, the finger 25 is always maintained in a state of being connected to the suction plenum 45 having a high degree of vacuum.
Because the ring 18 shown in FIG. 3 surrounds the suction member 3 almost concentrically, the central constriction 48 of the suction member 3 is formed.
In this case, the hole 20 is always connected to the suction plenum 45 having a high vacuum, and the outer wall 47 is continuous without any hindrance from the top to the bottom. Unlike the case of the finger 25, the hole of the suction duct 16 is connected at one time to the suction plenum 45 and at other times to the suction plenum 46 based on the angular position. This is because holes 17 are provided at the top and bottom of the support member 14, and these holes 17 pass not only through the slot 51 but also through the slots 49 and 50 (FIG. 4). In this regard, the hole 17 is connected to a high vacuum suction plenum 45 via a slot 50 and
0 is connected to the suction plenum 46 having a low vacuum degree. As shown in FIGS. 2 and 3, the disc cam 31 has not only the recess 34 but also a recess 57. For this reason, the follower rollers 30 of the fingers 25 of each group
Within this range, the corresponding finger group is set to the disc cam 3
Move from around 1 outward. As a result, the cover sheet sections supported by the finger groups 25 are pressed against the open bottom portions 53 that are moved through. For this reason, the finger 25 and the suction duct 16
Despite the fact that vacuum is still acting on both
The adhesive strength for attaching the bottom cover sheet to the open bottom is so great that the cover sheet can be peeled off the fingers 25 and suction duct 16. This is necessary so that the bottom cover sheet can be transported and set with complete reliability at the moment of applying the adhesive. Further, each of the knife members 12 is provided with felt rollers 58 impregnated with silicone, and these felt rollers 58 are cleaned by the knife members 12 each time the knife members 12 pass. Note also that

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing an apparatus of the present invention for attaching a bottom cover sheet to an open bottom of a bag. FIG. 2 is a plan view showing the apparatus of FIG. FIG. 3 is a cross-sectional view of the device of FIG. 1 taken to show as many parts as possible. FIG. 4 is a perspective view showing a timing body that supports a feed cylinder. FIG. 5 is a sectional view of the timing body of FIG. 4; FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 3, with the exfoliated segment shown on the left side of FIG. 3 shown with a finger tube; FIG. 7 is a sectional view taken along the line VII-VII of FIG. 3, showing a rotating cylindrical ring with a suction duct and three cutting knives distributed around it. DESCRIPTION OF SYMBOLS 1 Housing 2 Cylindrical member 5 Drive gear wheel 6 Pinion 7 Shaft 11 Support member 12 Knife member 13 Knife 14 Support member 16 Suction duct 16 'Suction hole 17 Hole 18 Ring 19 Set screw 20 Duct hole 21 Hole 23 Cylindrical tube 24 Sleeve 25 Finger (Finger segment) 26 Hole 27 Suction opening (Suction hole) 29 Short lever 30 Follower roller 31 Disk cam 32 Tube 33 Tube 34 Depression 35 Bridge member (guide member) 39 Piston / cylinder unit 44 Angle Diaphragm 45 suction plenum 46 suction plenum 47 continuous wall (outer wall) 48 central constriction (groove) 49 slot 50 slot 51 slot 52 belt 53 bag open bottom 54 bottom sheet web (bottom cover sheet, cover sheet web) 55 bell 56 eliminates conveyor 57 recess 58 felt roller

Continued on the front page (72) Inventor Werner Deckel Germany 4544 Radbergen Torfdam 42 (72) Inventor Andreas Kampschlt Germany 4540 Lengerich Osterkamps Kamp 60 (56) References JP-A-49-53800 (JP) , A) Japanese Utility Model Showa 58-9311 (JP, U) Japanese Patent Publication No. 46-21270 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) B31B 1/60-1/72 B65C 9/00-9/46

Claims (1)

(57) Claims 1. An adhesive-coated web section or label is applied to articles conveyed in a flat array, and the adhesive-coated bottom is provided. An apparatus for applying a cover sheet to a drawn or laid-down bottom of a bag, the article receiving a web section and being conveyed substantially tangentially to said web section, i.e. the bottom of each article ( 53) a rotary drive supply cylinder for transporting the web section;
A conveying device for conveying the web section to an exclusion conveyor (56) when the article or the bottom (53) is not present, wherein the supply cylinder is designed in the form of a suction cylinder; The driven segment (25) can oscillate outside the cylindrical contour of the driven segment (25).
Supplying the web section to the reject conveyor (56) in cooperation with a supply cylinder.