WO1999006285A1

WO1999006285A1 - A method and a device for affixing sheets of material to objects moving in a row

Info

Publication number: WO1999006285A1
Application number: PCT/NL1998/000420
Authority: WO
Inventors: Raymond Edmund Ros
Original assignee: Add-On International B.V.
Priority date: 1997-08-01
Filing date: 1998-07-22
Publication date: 1999-02-11
Also published as: EP1003677A1; AU8563598A; NL1006706C2

Abstract

A method for affixing sheets of material (26) to quires (38) moving in a row by means of a rebondable adhesive, wherein a strip of material (4) which is provided on one side, near its egde (40), with a film of adhesive (41), preferably a rebondable adhesive, is unwound from a supply roll (3) and supplied to a cutting device (21) in a direction of supply. The cutting device (21) separates one sheet of material (26) at at time from said strip of material (4), after which the separated sheet of material (26) is moved further in a direction of discharge and subsequently adhered to a quire (38). According to the invention, the direction of discharge (43) is inclined at an angle to a plane which is perpendicular to the surface of the strip of material (4) at the location of the cutting device (21) and parallel to said direction of supply (42).

Description

A METHOD AND A DEVICE FOR AFFIXING SHEETS OF MATERIAL TO OBJECTS MOVING IN A ROW

The invention relates to a method for affixing sheets of material to objects moving in a row by means of a rebondable adhesive, wherein a strip of material which is provided on one side, near its edge, with a film of adhesive, preferably a rebondable adhesive, is unwound from a supply roll and supplied to a cutting device in a direction of supply, which cutting device separates one sheet of material at a time from said strip of material, after which the separated sheet of material is moved further in a direction of discharge and subsequently adhered to an object. The objects may be packages or containers, which are present on a conveyor in a row, for example when being filled. The invention is preferably used for adhering the sheets of material, preferably paper, to pages of quires. The objects will in particular be referred to as quires hereinafter.

The term quires should be given a broad interpretation. It is meant to include magazines, parts of magazines, brochures as well as any other sheet of paper or quire or other material which is subjected to processing step whereby a number of items are moved in a row.

It is known to affix sheets of material to quires by means of a rebondable adhesive, for example in order to make publicity for a product which is described on the sheet. An example of this is a small yellow, rectangular sheet of paper provided with a pre-printed telephone number, which is adhered to a quire of a magazine and which can be stuck to a telephone after being removed from the magazine. Such a rebondable adhesive, which may be applied to a surface in a thin film, whether or not with the addition of a coating, and which can be adhered to a surface in a rebondable manner, that is, several times without losing its adhesive effect and without leaving behind any traces on said surface thereby, is known from 4J CO cd 4-1 x xi Φ 4-

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The drawback of the known method is the fact that it cannot be used in combination with usual conveyors for quires . The fact is that the usual conveyors move the quires, which are folded open in V-shape, on a chain with their spines extending substantially parallel to their direction of movement. Taking into consideration the above preconditions, it was considered to be impossible to affix sheets in a simple manner to quires which move in such a manner, since this would for example require a device which would have to move along with the quires.

The invention, however, provides a method of the kind referred to in the introduction by means of which it is possible to affix sheets of material comprising a rebondable material in a simple manner to quires moving in the direction of their spines . To that end the method according to the invention is characterized in that the direction of discharge is inclined at an angle to a plane which is perpendicular to the surface of the strip at the location of the cutting device, and which is parallel to the direction of supply.

The invention is based on the insight that it is relatively simple to discharge the sheets, when they are not moving and have just been separated from said strip, in a direction other than the direction in which the strip is supplied. The preconception that the direction of supply of the strip should correspond with the direction of movement of the quires is thus put aside.

In one embodiment, the method according to the invention is characterized in that the direction of movement of the moving quires is inclined at an angle to the plane which is perpendicular to the surface of the strip at the location of the cutting device and which is parallel to the direction of supply. In one preferred embodiment of the method according to the invention, the angle at which the direction of discharge and/or the direction of movement is (are) inclined is at least 5°, preferably at least 10°, and in particular at least 15°.

An especially advantageous embodiment of the method according to the invention is characterized in that said angle is a substantially right angle. This makes it possible to supply the strip of material in a direction substantially perpendicular to the direction of movement of the quires.

Another embodiment of the method according to the invention is characterized in that the direction of discharge and the direction of movement of the moving quires are substantially in one plane. This leads to an enhanced reliability as regards the affixation of the sheets of material.

One embodiment of the method according to the invention is characterized in that the strip of material is supplied intermittently to the cutting device by moving the strip a predetermined distance each time a quire to which a sheet of material is to be adhered passes a predetermined location. In this manner it is achieved that material will be present in the cutting device only when a sheet is to be separated from the strip.

Another embodiment of the method according to the invention is characterized in that the cutting device makes a cutting movement each time an object passes a predetermined location. This makes it possible for the drive unit of the cutting device to be mechanically coupled to the drive unit of a conveyor for quires in a simple manner. The invention also relates to device for affixing sheets of material to quires moving in a row by means of a rebondable adhesive.

The invention will be explained in more detail hereafter by means of two embodiments of the invention, which are illustrated in a drawing. In the drawing:

Figure 1 and Figure 2 are diagrammatic side views of a device for affixing sheets of material to quires moving in a row in various positions thereof;

Figure 3 is a diagrammatic plan view of a strip of material and a separated sheet of material, which is engaged; and Figure 4 is a diagrammatic side view of another embodiment of the device for affixing sheets of material to quires moving in a row.

The Figures are merely diagrammatic representations of the embodiments, wherein like parts are numbered alike.

Figure 1 shows a driven holder 1, which is rotatable in the direction indicated by arrow 2, about an axis which extends perpendicularly to the plane of the drawing, on which a supply roll is provided, from which a strip of material 4 is unwound. The strip of material 4 is present on that side which is directed inwardly when strip 4 is wound on supply roll 3. Strip 4 is provided near its edge with a film of a rebondable adhesive. It is preferred to use a continuous film having a uniform width. The strip is transported to a vacuum plate via a tensioning device 5. Tensioning device 5 comprises three conveyor rollers 7, 8, 9, which are each rotatable in the direction indicated by arrows 10, 11, 12, about an axis which extends perpendicularly to the plane of the figure. The tension on strip 4 is controlled by translating conveyor roller 8 with respect to conveyor rollers 7 and 9. s 1 ft tn Φ 4H φ -. rH X

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29, which is capable of rotation about an axis 34 which lies in the plane of the figure. Rotation device 29 comprises a rotor comprising two opposite rotor sides 30, 31, which together form an hourglass-shaped construction, seen in side view. The free ends 32, 33 of rotor sides

30, 31 follow the outside surface of an imaginary cylinder through the axis 34 of rotation device 29. Rotation device 29 is furthermore provided with two pairs of clamping elements 35, 36, which, depending on the angle of rotation device 29, are moved between a position in which they clamp down a sheet 26 onto a free end 32, 33 and a position in which release and/or engage a sheet 26 present on a free end 32, 33.

Referring to Figure 2, it is shown therein that the separated sheet 26 is clamped down onto the free end 32 of rotor side 30 by means of said pair of clamping elements 35. Figure 2 furthermore shows a sheet 37, which is transferred from the free end 33 of the opposite rotor side 31 by rolling it onto a passing quire 38. Clamping elements 36 occupy the position in which they have released sheet 37 and in which they can engage, after the rotation device has been rotated through a larger angle, a next sheet as soon as said sheet has been cut off and is moved towards a free end of one rotor side by rod 28. The sheet 26 is discharged by the rotation device 29 in a direction of discharge which is perpendicular to the plane of the drawing, that is, to a plane which is perpendicular to the surface of strip 4 at the location of the cutting device 21 and parallel to the direction in which strip 4 is being supplied.

The device is furthermore provided with a sensor (not shown) , by means of which it can be detected, at a location downstream of the rotation device, seen in the direction of movement of the quires, whether a quire passes a predetermined location. Each time it is detected that a quire 38, to which a sheet of material is to be affixed, passes said predetermined location, strip 4 is intermittently supplied to the cutting device 29 by moving the strip a predetermined distance. The distance over which the strip is moved, is determined by a sensor (not shown) , which detects marks provided in repeat on strip 4. The cutting device is provided with a drive unit, which is mechanically coupled to the drive unit of a conveyor for quires 38 (not shown) . When the strip of material 4 has passed through the cutting device 21, a sheet 26 will be separated as soon as sheets 23, 26 of cutting device 21 touch one another. Cutting device 21 rotates continuously, therefore, independently of the fact whether a strip of material 4 is present in cutting device 21 or not. The drive unit of the rotation device 29 is likewise mechanically coupled to the drive unit of the conveyor for quires 38 (not shown) .

Figure 3 is a diagrammatic plan view of a strip 4, which is provided on the upper side, near edge 40, with a film

41 of a rebondable adhesive, which extends in the longitudinal direction of the strip. Figure 3 furthermore shows a sheet 26, which has just been separated from the strip and which is being discharged from rotation device 29 by means of the pair of clamping elements 35. The direction in which strip 4 is supplied is indicated by arrow 42, whilst arrow 43 indicates the direction in which sheet 26 is discharged. It is clearly shown in the figure that the direction of discharge is inclined at an angle to a plane which is perpendicular to the surface of the strip and parallel to the direction of supply.

Figure 4 shows that it is also possible to use a different construction for rotation device 29. The rotor sides 30, 31 are each provided near their free ends 32, 33 with holes 44, 45, in which a sub-atmospheric pressure may prevail . The sheets of material can be drawn onto the free ends 30, 33 of rotation device 29 via said holes. The free ends 32, 33 of rotor sides 30, 31 pass quite close to the sheet upon rotation. The sheets can be pressed down on the free ends at the correct location by means of a press-down roller 46. The sub-atmospheric pressure is released when the sheets roll onto quire 38.

It is noted that the invention is not limited to the illustrated embodiments. Other embodiments are possible within the scope of the invention.

Claims

1. A method for affixing sheets of material to objects moving in a row by means of a rebondable adhesive, wherein a strip of material which is provided on one side, near its edge, with a film of adhesive, preferably a rebondable adhesive, is unwound from a supply roll and supplied to a cutting device in a direction of supply, which cutting device separates one sheet of material at a time from said strip of material, after which the separated sheet of material is moved further in a direction of discharge and subsequently adhered to an object, characterized in that the direction of discharge is inclined at an angle to a plane which is perpendicular to the surface of the strip of material at the location of the cutting device and parallel to said direction of supply.

2. A method according to claim 1, characterized in that the direction of movement of the moving objects is inclined at an angle to said plane.

3. A method according to claim 1 or 2 , characterized in that said angle is at least 5°, preferably at least

10°, and in particular at least 15°.

4. A method according to claim 1 or 2 , characterized in that said angle is a substantially right angle.

5. A method according to any one of the preceding claims, characterized in that the direction of discharge and the direction of movement of the moving quires are substantially in one plane, preferably parallel to each other.

6. A method according to any one of the preceding claims, characterized in that the strip of material is supplied intermittently to the cutting device by moving the strip a predetermined distance each time an object to which a sheet of material is to be adhered passes a predetermined location.

7. A method according to any one of the preceding claims, characterized in that said cutting device makes a cutting movement each time an object passes a predetermined location.

8. A method according to any one of the preceding claims, characterized in that said adhesive is a rebondable adhesive.

9. A device for affixing sheets of material to objects moving in a row by means of a rebondable adhesive, which device comprises means for unwinding a strip of material which is provided on one side, near its edge, with a film of adhesive from a supply roll and transporting said strip, which device furthermore comprises a cutting device for separating sheets of material from said strip of material, to which cutting device said strip of material can be supplied in a direction of supply, as well as means for moving the separated sheets of material further in a direction of discharge and affixing said sheets to an object which passes the device, characterized in that the device is constructed in such a manner that the direction of discharge is inclined at an angle to a plane which is perpendicular to the surface of the strip of material at the location of the cutting device and parallel to said direction of supply.

10. A device according to claim 9, characterized in that said device is constructed in such a manner that the direction of movement of the moving objects is inclined at an angle to said plane.

11. A device according to claim 10 or 11, characterized in that said device is constructed in such a manner that said angle is at least 5°, preferably at least 10°, and in particular at least 15°.

12. A device according to any one of the claims 9 or 10, characterized in that said device is constructed in such a manner that said angle is a substantially right angle .

13. A device according to any one of the preceding claims 9 - 12, characterized in that said device is constructed in such a manner that the direction of discharge and the direction of movement of the moving objects are substantially in one plane, preferably parallel to each other.

14. A device according to any one of the claims 9 - 13, characterized in that said device furthermore comprises means for detecting whether an object passes a predetermined location, as well as means for supplying the strip of material intermittently to the cutting device each time an object to which a sheet of material is to be adhered is detected.

15. A device according to any one of the claims 9 - 14, characterized in that said cutting device comprises a drive unit, which is mechanically coupled to the drive unit of a conveyor for objects.

16. A device according to any one of the claims 9 - 15, characterized in that said film of adhesive is a film of a rebondable adhesive.