JP2615776B2 - Strip positioning device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for positioning a strip, and more particularly, to an apparatus for positioning a strip in a feeding direction.

2. Description of the Related Art Conventionally, for example, in a paper pack filling apparatus, a band-shaped material is formed into a cylindrical shape, and the inside thereof is filled with a liquid. Thereafter, the liquid-filled cylindrical members are sealed at desired intervals. Is sealed, and the cylindrical member is cut and separated at the sealing portion to produce a liquid-sealed container (Japanese Patent Application Laid-Open No. 61-1986).
No. 47312).

In this type of filling apparatus, before forming the above-mentioned band-like material into a cylindrical shape and filling the inside thereof with a liquid, a predetermined folding line is pressed and formed on the band-like material in advance, and the cylindrical member is cut at the sealing portion. Later, the container is bent along the fold line so that a container having a desired shape can be accurately formed.

By the way, in order to press and form a predetermined folding line on the strip-shaped material, a first roller having a projection of a required shape formed on the outer peripheral surface,
A second roller provided in parallel with the first roller and provided with a concave portion or an elastic body on the outer peripheral surface of which the convex portion is fitted is provided, and a band-shaped material is passed between the two rollers to form the required shape on the band-shaped material. May be pressed. Such a configuration, for example, in which the above-mentioned convex portion serves as a cutting blade, is used for a die cut cutting mechanism of a roll labeler.

However, since a trademark, a pattern, or the like is printed on the strip at a predetermined interval in advance, it is necessary to press-form the folding line at an optimum position in accordance with the printed portion, and the strip is positioned in the transport direction. When it is shifted, it is necessary to adjust it and position it at an appropriate position.

For this purpose, for example, the interval between the printed portions is set to be slightly narrower than the interval between the press forming positions of the folding line by the pair of rollers, and the band is sandwiched on the upstream side of the pair of rollers. A pair of tension rollers for applying power are provided, and when the printing portion is displaced forward in the transport direction from the press forming position of the folding line, the braking force of the tension roller is increased to increase the pair of tension rollers. What is necessary is just to force the belt-shaped material to slide to the rear side in the transport direction with respect to the roller and to displace it.

[Problems to be Solved by the Invention] However, when positioning is performed in this manner, the braking force and the relative slip amount fluctuate under various conditions, so that the positioning state becomes unstable, and furthermore, the band-shaped material is Risk of breakage.

[Means for Solving the Problems] In view of such circumstances, the present invention provides a first roller having a convex portion having a required shape formed on an outer peripheral surface thereof, the first roller being juxtaposed to the first roller, and the convex portion being formed on the outer peripheral surface. And a second roller provided with a concave portion or an elastic body into which is fitted, wherein the band-shaped material is passed between the two rollers to press the convex portion on the band-shaped material. A position adjusting member is provided at a required position on the outer peripheral surface of the roller so as to be able to protrude and retract, and a concave portion or an elastic body into which the position adjusting member is fitted when the position adjusting member protrudes is provided on the other roller. A detector for detecting the printing position of the material, a detector for detecting the rotational angle position of the roller, and a control device for inputting a signal from the detector, wherein the control device detects the detection result of the detector. The position adjustment member based on By sinking it is obtained so as to adjust the feed amount of the strip material.

[Operation] According to the above configuration, the feed amount of the band-shaped material can be adjusted according to the emergence of the position adjusting member, so that no excessive force is applied to the band-shaped material, and positioning can be performed smoothly and accurately. Can be.

"Example" Hereinafter, the present invention will be described with reference to the illustrated example. In FIG. 1, the first roller 1 and the second roller 2 having the same diameter and juxtaposed to each other are synchronized in the opposite directions and are the same. The belt-like material 3 inserted between them is wound around the second roller 2 and then discharged in parallel with the direction in which the above-mentioned material 3 is supplied. I have.

On the outer peripheral surface of the first roller 1, in the illustrated embodiment, convex portions 4 a to 4 b forming the same shape of the fold line are formed at four positions at equal intervals in the circumferential direction, and the outer peripheral surface of the second roller 2. Also, concave portions 5a to 5d into which the convex portions 4a to 4b are fitted are formed. Therefore, the belt-shaped material 3 inserted between the first roller 1 and the second roller 2 is formed with a folding line having a required shape by the engagement of the convex portions 4a to 4b and the concave portions 5a to 5d. For each one rotation of 1 and 2, four fold lines of the same shape are formed along the longitudinal direction of the strip 3.

However, as shown in FIG. 1 and FIG. 2, a groove 8 is formed on the outer peripheral surface of the first roller 1 along the axial direction at an intermediate position between the convex portions 4a to 4d. Groove 8
Inside, a position adjusting member 9 is provided so as to be able to protrude and retract from the outer peripheral surface of the first roller 1. Both ends of each position adjusting member 9 are first
The position adjusting member 9 is normally connected to the piston 11 of the air cylinder device 10 provided on the roller 1 by urging each piston 11 radially inward by a spring 12.
Are not projected from the outer peripheral surface of the first roller 1. At this time, each position adjusting member 9 is connected to the Wakasen first roller 1.
May be protruded from the outer peripheral surface.

A radially inner portion of the cylinder 13 into which the pistons 11 are slidably fitted while maintaining airtightness has an air passage 14 formed in the radial direction of the first roller 1 and an air passage formed in the axial direction. When the compressed air is supplied to each of the cylinders 13 by opening a solenoid valve (not shown) provided in the air passage 15 and supplying the compressed air to each of the cylinders 13, all the position adjusting members 9 Can be simultaneously protruded from the outer peripheral surface of the first roller 1 by a predetermined amount.

The other second roller has, along the axial direction, a recess 16 into which each of the position adjusting members 9 is fitted when the position adjusting member 9 protrudes. The belt-shaped material 3 is sandwiched between the inner surface of the concave portion 16 and bent, and the amount of feeding of the belt-shaped material can be increased by the amount of the curvature.

Further, the belt-shaped material 3 is provided with a printing portion 3a on which a trademark, a pattern, or the like is printed at regular intervals, and a register mark 18 for position detection is provided on each printing portion 3a. The register mark 18 can be detected by a detector 19 provided at a predetermined distance from the pair of rollers 1 and 2, and a signal from the detector is input to a control device (not shown).

The control device receives, in addition to the signal from the detector 19, a signal from a detector (not shown) that detects the rotational angle position of each of the rollers 1 and 2. A position shift in the transport direction between the portion 3a and each of the convex portions 4a to 4d is detected, and when the amount of the position shift exceeds a predetermined allowable range, the electromagnetic valve (not shown) provided in the air passage 15 is opened to set the position. The adjustment member 9 is made to protrude.

At this time, the interval between the printing portions 3a printed on the strip 3 is set to be slightly wider than the interval between the adjacent convex portions 4a to 4d, whereby the position adjusting member 9 In the normal state of retreat, the position of the printing portion 3a of the belt-shaped material 3 and the positions of the convex portions 4a to 4d are set so as to gradually shift to the rear side in the transport direction.

In the above configuration, in the normal state in which the position adjusting member 9 is retracted, the positions of the printing portion 3a of the belt-shaped material 3 and the convex portions 4a to 4d gradually shift to the rear side in the transport direction as described above. Eventually, the displacement will exceed the allowable range. Then, the control device opens an electromagnetic valve (not shown) provided in the air passage 15 and causes all the position adjusting members 9 to protrude simultaneously.

When the position adjusting members 9 are projected, the band members 3 are bent when the position adjusting members are fitted into the concave portions 16. When the band members 3 are bent, the band members are bent by the amount of the bending. Since the feed amount of the print portion 3 increases, the printing portion 3a has
It is relatively displaced forward in the transport direction with respect to 4d. When this operation is repeated once or a plurality of times and the amount of the positional deviation falls within a predetermined allowable range, the control device closes a solenoid valve (not shown) provided in the air passage 15, whereby all of the valves are closed. The position adjusting member 9 is a spring
It is returned to its original retracted position with 12 rebounds.

During the rotation of the rollers 1 and 2, the position adjusting member 9 is rotated.
Can be adjusted in multiple steps or steplessly. Further, instead of forming the concave portions 5a to 5d and the concave portions 16, an elastic body may be used, and the convex portions 4a to 4d may be further used.
May be used as a cutting blade.

[Effects of the Invention] As described above, according to the present invention, the feed amount of the band-shaped material can be adjusted according to the emergence of the position adjusting member,
An effect is obtained that positioning can be performed smoothly and reliably without applying excessive force to the belt-like material unlike the conventional device.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line II-II of FIG. DESCRIPTION OF SYMBOLS 1 ... 1st roller, 2 ... 2nd roller 3 ... Band-shaped material, 3a ... Printing part 4o-4d ... Convex part, 5a-5d ... Concave part 8 ... Groove, 9 ... Position adjustment member 10 …… Air cylinder device, 16… Recess 18 …… Register mark, 19… Detector

Claims (1)

(57) [Claims] A first roller having a convex portion of a required shape formed on an outer peripheral surface thereof; and a second roller provided in parallel with the first roller and having a concave portion or an elastic body on the outer peripheral surface into which the convex portion is fitted. And a roller, wherein the belt-shaped material is passed between the rollers so that the convex portion is pressed against the belt-shaped material. The position adjusting member can be protruded and retracted at a desired position on the outer peripheral surface of one of the rollers. And a concave portion or an elastic body into which the position adjusting member is fitted when the position adjusting member protrudes from the other roller, and a detector for detecting a printing position of the strip material with respect to the roller, and rotation of the roller. A detector for detecting an angular position, and a control device for further inputting a signal from the detector are provided, and the control device protrudes and retracts the position adjusting member based on a detection result of the detector to form a band-shaped material. Adjusting the feed amount A positioning device for a strip-shaped material.