JP2003118900A - Laminating device and intermittent printing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a laminating device which can produce a continuous sheet without lenticulation and warping by keeping tension of a laminated film which is fed to a continuous sheet back and force constant. SOLUTION: A laminating device 3 laminates a continuous film 22 on a continuous sheet 5 in which the continuous sheet 5 moves in the forward direction while moving back and force, and the continuous film 22, whose tension is maintained at a predetermined value by a dancer roller 29 which is supported by a constant supporting member 30, is fed on the continuous sheet 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminating apparatus provided in an intermittent printing machine or the like.

[0002]

2. Description of the Related Art When manufacturing a printed matter such as a label sticker, an intermittent printing machine that prints by repeating forward and reverse feeds of a print medium (continuous paper) is disclosed in, for example, Japanese Unexamined Patent Publication No.
The thing described in 0-52530 is known.

[0003]

In the intermittent printing machine of this type, when a continuous film is supplied on the printing surface of the continuous paper for lamination, the continuous paper is fed forward and backward. However, there is a problem that the continuous paper is wavy or warped. Therefore, it is an object of the present invention to provide a laminating apparatus in which the tension of a laminating film supplied to a continuous paper which is forward-reversely fed is kept constant so that the continuous paper is not wavy or warped.

[0004]

In order to achieve the above object, the present invention has taken the following means. That is, the feature of the present invention is an apparatus for laminating a continuous film on a continuous paper, wherein the continuous paper moves in the forward feed direction while repeating forward feed and reverse feed, and the continuous film is moved by a dancer roller. In the laminating apparatus in which a predetermined tension is applied and is supplied onto the continuous paper, the dancer roller is supported by a constant supporting force holding means.

Even if the dancer roller is displaced, it is supported by the constant supporting force holding means so that its supporting force becomes constant, so that a constant tension is applied to the film.
It is preferable to employ a link mechanism as the constant supporting force holding means. The dancer roller is supported by a link mechanism so as to be movable in the X and Y orthogonal directions, and the link mechanism is biased in the Y direction by biasing means to support the dancer roller in the X direction. . Since the urging force in the Y direction is converted to the X direction by the link mechanism, a difference can be generated between the displacement in the X direction and the displacement in the Y direction, and even if the displacement in the X direction occurs, the X direction supporting force is substantially constant. Can be Therefore, the change in tension of the continuous film caused by the change in the feeding direction of the continuous paper is also made constant by the dancer roller.

The continuous paper is Z which is orthogonal to the X and Y.
It is preferable that the continuous film is fed in the normal direction, and the continuous film is supplied to the continuous paper from the X direction. It is preferable that the link mechanism is a pantograph type, and the biasing means is a coil spring. A feature of the intermittent printing machine of the present invention is that a printing unit for printing on the continuous paper is provided on the upstream side of the laminating apparatus.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a multicolor intermittent printing machine including a laminating device. This intermittent printing machine comprises a paper supply device 1, a printing unit 2, a laminating device 3, a paper winding device 4, and the like. Paper feeder 1
Is a roll in which the continuous paper 5 is wound in a coil shape is mounted, and the continuous paper 5 is rewound from the roll 6. The continuous paper 5 is a long belt-shaped paper, and is composed of a label paper having an adhesive layer on the back surface and a release paper attached to the adhesive layer of the label paper.

The paper feeding device 1 includes a rewinding reel 7a.
And a pulling roller 7b, the reel 7a is provided with a rotation resistance by a powder brake, and the pulling roller 7b is rotationally driven in the same direction at a constant speed. The roll 6 is mounted on the rewind reel 7a, and the continuous paper 5 is pulled out from the roll 6 by the pulling roller 7b with a constant tension. Similarly, the winding device 4 also has a winding reel 8a and a pulling roller 8b. The reel 8a is rotationally driven in a fixed direction by a motor with a powder clutch, and the pulling roller 8b is also rotationally driven in the same direction at a constant speed. ing. The continuous paper 5 is pulled by the pulling roller 8b and wound around the winding reel 8a with a constant tension.

A first feed roller 9 is provided between the paper feeding device 1 and the printing unit 2 so as to be driven to rotate in the forward and reverse directions.
A second feed roller 10 is provided between the printing unit 2 and the winding device 4 so as to be driven to rotate in the forward and reverse directions. The sheet 5 is wound around these feed rollers 9 and 10, and the sheet 5 is forwardly fed (feeding in the winding direction) and backwardly fed. A first dancer roller 11 is provided between the first feeding roller 9 and the pulling roller 7b of the sheet feeding device 1 to absorb the slack of the sheet 5 caused by the reverse feeding of the first feeding roller 9. In addition, the second dancer roller 12 is provided between the second feed roller 10 and the pulling roller 8b of the winding device 4.
Is provided to absorb the pulling of the sheet 5 caused by the backward feeding of the second feed roller 10.

The printing unit 2 includes a plate cylinder 13 and an impression cylinder 1.
4 and the ink supply device 15. Plate cylinder 13 and impression cylinder 1
The label paper of the continuous paper 5 is passed between the sheets 4 so as to face the plate cylinder 13 side. The printing plate is wound around the outer peripheral surface of the plate cylinder 13 over a predetermined range in the circumferential direction. On the outer peripheral surface of the plate cylinder 13, there is a space around which a plate is not wound, over a predetermined range in the circumferential direction. The plate cylinder 13 and the impression cylinder 14 are used for the paper 5
It rotates continuously at a constant speed in the forward feed direction. The plate cylinder 13
When the empty space where the plate is not wound faces the continuous paper 5, the continuous paper 5 is fed backward. This reverse feed is performed by rotating the first and second feed rollers 9 and 10 in reverse. Then, by feeding the continuous paper 5 backward, the interval between the printed portions is made as narrow as possible, and the margin portion is reduced.

A plurality of the printing units 2 are provided according to the number of colors. In this embodiment, as three-color printing, three printing units 2, 2 and 2 are provided at predetermined intervals in the vertical direction. ing. A UV dryer 16 is arranged on the downstream side of each printing unit 2 (the upstream side and the downstream side along the forward feeding direction of the continuous paper 5). A print registration roller 17 is provided between the printing units 2, and the position of the roller 17 is adjusted to adjust the length of the continuous paper 5 between the printing units 2 and to register the printing. Matching is possible.

A cutter device 18 is provided on the downstream side of the UV dryer 16 on the most downstream side and on the upstream side of the second feed roller 10. The cutter device 18 has a rotary cutter 19 in which a blade is formed on the outer peripheral surface of the cylinder, and the cutter 19 is configured to punch out the printed portion of the label paper leaving the release paper. Downstream printing unit 2
A cutter registration roller 20 is provided between the cutter and the cutter device 18. The laminating apparatus 3 is
It has a pair of upper and lower pressing rollers 21, and the pressing roller 21
Is on the upstream side of the cutter registration roller 20,
It is provided on the downstream side of the most downstream UV drying device 16.

When the continuous paper 5 passes between the pressing rollers 21, the continuous film 2 is formed on the label paper surface of the continuous paper 5.
2 is supplied and laminated. The continuous film 2
An adhesive layer is provided on the back surface of the sheet 2, and a release paper 23 is attached to the adhesive layer to form a laminated paper 24. The laminated paper 24 is wound into a roll. The laminating apparatus 3 has a rewind reel 25 on which the laminated paper 24 wound in a roll shape is mounted. A pulling roller 26 for pulling out the roll-shaped laminated paper 24 mounted on the rewinding reel 25 is provided. The pulling roller 26 is rotationally driven in the pull-out direction at a constant speed.

The laminated paper 24 pulled out by the pulling roller 26 is separated from the film 22 and the release paper 23 by passing through the peeling roller 27. The separated release paper 23 is taken up by the release paper take-up reel 28. The separated film 22 is supplied between the pressing rollers 21 via a dancer roller 29,
The adhesive layer 2 contacts the surface of the label paper of the continuous paper 5,
It is adhered by being sandwiched by the pressing roller 21. The dancer roller 29 is located directly above the pressing roller 21.

2 and 3 show the main part of the laminating apparatus 3. The dancer roller 29 is supported by a constant supporting force holding means 30. The constant supporting force holding means 30 is configured as a link mechanism. The dancer roller 29 is supported by the link mechanism 30 so as to be movable in the X direction, which is a direction orthogonal to the X and Y directions.
0 is biased in the Y direction by the biasing means 31 to support the dancer roller 29 in the X direction. The continuous paper 5 is forward-fed in the Z direction orthogonal to the X and Y, and the continuous film 22 is supplied to the continuous paper 5 from the X direction.

That is, in this example, the X direction is the vertical direction, the Y direction is the left and right horizontal directions, and the Z direction is the front and back horizontal directions. The dancer roller 29
Are rotatably supported by a support frame 32, and the left and right ends of the support frame 32 are supported by guide rails 33 so as to be vertically movable. The center portion of the support frame 32 in the left-right direction is supported by the link mechanism 30. The link mechanism 30 is of a pantograph type in which four links are assembled in a diamond shape. Of the four pivotal fulcrums of this pantograph diamond-shaped link, the upper fulcrum is pivotally supported by the support frame 32, the lower fulcrum is pivotally supported on the fixed side, and the urging means 31 is provided between the left and right fulcrums. There is.

As an example of the biasing means 31, a tension coil spring is stretched between left and right fulcrums. An adjusting device 34 for adjusting the strength of the spring is provided. The adjusting device 34 can adjust the length of the spring by turning the nut 35. A scrap winding device 37 for winding the scrap 36 punched by the cutter device 18 is provided between the second dancer roller 12 and the paper winding device 4.

According to the intermittent printing machine having the above construction, the pulling roll 7b of the paper feeding device 1 and the pulling roll 8b of the paper winding device 4 are continuously rotated in the same direction, and the continuous paper 5 is pulled out with a constant tension. , Also wound up. Then, the continuous paper 5 between the first and second feed rollers 9 and 10
By repeating forward and reverse rotations of these feed rollers 9 and 10, the forward feed and the reverse feed are repeated and the forward feed is performed as a whole. At this time, by driving the first and second feed rollers 9 and 10 in synchronism, the forward feed and the reverse feed are performed under a constant tension without slack or pulling.

Between the paper feeding device 1 and the first feeding roller 9 and between the paper winding device 4 and the second feeding roller 10,
Since the continuous paper 5 is loosened or pulled by the forward and reverse rotations of the first and second feed rollers 9 and 10, the first and second feed rollers 9 and 10 rotate.
The dancer rollers 11 and 12 absorb slack and pull. Multicolor printing is performed by the printing unit 2 on the continuous paper 5 that is forward-fed between the first and second feed rollers 9 and 10, and the reverse feed reduces the margin space between prints.

The continuous film 22 is laminated on the printed continuous paper 5 by the laminating device 3.
At this time, when the continuous paper 5 is fed backward, the pressing roller 2
The portion bonded by 1 is fed backward, and the film 22 between the dancer roller 29 and the pressing roller 21 is returned in the opposite direction, as shown by the phantom line in FIG. 2, and the tension changes. However, this change in tension is absorbed by the dancer roller 29 to minimize the change in tension.

That is, the pantograph type link mechanism 3
Since 0 is used to support the displacement in the X direction by the coil spring 31 stretched in the Y direction, the change in tension with respect to the displacement ΔX is extremely small as compared with the coil spring 31 stretched in the X direction. Therefore, even if the continuous paper 5 is fed forward and backward, the change in tension of the laminate film 22 is small,
The continuous paper 5 is prevented from waviness and warping. 4 to 6 show another embodiment of the link mechanism 30 of the laminating apparatus 3. The one shown in FIG.
The two links of the four-link mechanism are provided in an X shape, and the biasing means 31 is provided at the free end thereof.

In the structure shown in FIG. 5, two links are provided in an X shape, and a fulcrum at the center thereof is pivotally supported on the fixed side, a slider 38 is pivotally supported at the upper end of the link, and the slider 38 is supported by the support frame 32. It is provided slidably on. A tension spring of the biasing means 31 is stretched between the lower ends of the links. In the structure shown in FIG. 6, two links are provided so as to be bent in a dogleg shape, and the bending point is pressed by the biasing means 31. The biasing means 31 in this case is a compression spring.
The present invention is not limited to the one shown in the above-mentioned embodiment, and for example, the constant supporting force holding means 30 is not limited to the link mechanism 30, and is supported in the same direction as the movement direction of the dancer roller. It may be an air cylinder or the like. Further, the biasing means 31 is not limited to a spring, and may be an air cylinder or the like. Also,
The laminate film is not limited to one that is adhered by an adhesive, but may be one that is pressure-bonded by heat. The laminate film may not have a release paper. The continuous paper is not limited to the label paper and the release paper, and may be a single sheet or a multi-layered sheet, and the material is not limited to paper.

[0023]

According to the present invention, since the tension of the laminated film supplied to the continuous paper fed in forward and reverse directions can be made constant, the continuous paper is not wavy or warped.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an intermittent printing machine showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of a laminating apparatus.

FIG. 3 is a front view showing one form of a link mechanism of the laminating apparatus.

FIG. 4 is a front view showing another form of the link mechanism of the laminating apparatus.

FIG. 5 is a front view showing another form of the link mechanism of the laminating apparatus.

FIG. 6 is a front view showing another form of the link mechanism of the laminating apparatus.

[Explanation of symbols]

2 printing units 3 Laminating device 5 continuous paper 22 continuous film 29 Dancer Laura 30 Constant support force holding means (link mechanism) 31 Biasing means

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3F050 AA02 BB07 BC01 BD03 BD07                       LA06 LA15 LB03 LB08                 3F103 AA01 AA03 BA08 DA03                 3F105 AA01 AA04 AB00 BA02 CA02                       CA15 DA04

Claims (5)

[Claims] 1. An apparatus for laminating a continuous film on a continuous paper, wherein the continuous paper moves in the forward feed direction while repeating forward and reverse feeds, and the continuous film is given a predetermined tension by a dancer roller. In the laminating apparatus which is fed onto the continuous paper, the dancer roller is supported by a constant supporting force holding means. 2. The constant supporting force holding means comprises a link mechanism, the dancer roller is supported by the link mechanism so as to be movable in the X and Y orthogonal directions, and the link mechanism is provided by a biasing means. The laminating apparatus according to claim 1, wherein the dancer roller is biased in the Y direction to support the dancer roller in the X direction. 3. The continuous paper is forward-fed in a Z direction orthogonal to the X and Y, and the continuous film is supplied to the continuous paper from the X direction. Laminating equipment. 4. The laminating apparatus according to claim 2, wherein the link mechanism is a pantograph type, and the biasing means is a coil spring. 5. An intermittent printing machine, comprising a printing unit for printing on the continuous paper on the upstream side of the laminating apparatus according to any one of claims 1 to 4.