JPH01231746A - Positioner for strip member - Google Patents

Abstract

PURPOSE:To enable smooth and reliable positioning without applying excessive force onto a strip member by regulating the feeding amount of the strip member corresponding to projection or retraction of a position regulating member. CONSTITUTION:Under normal state where a position regulating member 9 retracts, the print section 3a and the protrusions 4a-4d on a strip member 3 are shifted gradually rearward in carrying direction, and when the shift exceeds over an allowable level, a controller opens a solenoid valve arranged in an air path 15 and projects all regulation members 9 simultaneously. The strip member 3 is bent when the regulation member 9 projects and fits in a recess 16 to increase feeding amount of the strip member 3 correspondingly, the print section 3a displaces forward in carrying direction relative to the protrusions 4a-4d. When the operation is repeated one or plural times and the shift is confined within the allowable range, the controller opens the solenoid valve thus resetting all regulation members 9 to original retracted position through the resiliency of a spring 12.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a positioning device for a strip of material, and more particularly to a device for positioning a strip of material in the feeding direction.

``Prior art'' Conventionally, for example, in a paper carton filling device, a strip material is formed into a cylindrical shape and a liquid is filled inside the band, and then the cylindrical member filled with the liquid is sealed at required intervals to fill the liquid. The cylindrical member is then cut and separated at the sealed portion to produce a container in which the liquid is sealed.
47312).

In this type of filling device, before forming the strip material into a cylindrical shape and filling the inside with liquid, a predetermined fold line is pressed into the strip material in advance, and the cylindrical member is cut at the seal portion. By later bending it along the fold line, it is possible to accurately mold the container into the desired shape.

However, in order to press and form a predetermined fold line on the band-shaped material, a first roller having a protrusion of a desired shape formed on the outer circumferential surface is installed in parallel with the first roller, and the protrusion is fitted onto the outer circumferential surface of the first roller. A concave portion or a second roller provided with an elastic body to be fitted may be provided, and a strip material may be passed between both rollers to press the convex portion of the desired shape onto the strip material. Such a configuration is used, for example, in a die-cut cutting mechanism of a roll labeler, in which the convex portion serves as a cutting blade.

However, since trademarks, patterns, etc. are preprinted on the strip material at predetermined intervals, it is necessary to press-form the fold lines at the optimal position to match the printed portion, and the strip material is not positioned in the transport direction. When it is misaligned, it is necessary to adjust it and position it in the proper position.

To do this, for example, the interval between the printed parts is set in advance to be slightly narrower than the interval between the pressing positions of the fold lines by the pair of rollers, and the belt-shaped material is sandwiched between the upstream sides of the pair of rollers, and the braking force is applied to the belt-shaped material. A pair of tension rollers are provided to apply the pressure, and when the printed part is displaced forward in the conveyance direction from the press forming position of the fold line, the braking force of the tension roller is strengthened and the pair of rollers On the other hand, it is only necessary to forcibly slide the strip material to the rear side in the conveying direction and shift the position.

``Problem to be Solved by the Invention'' However, when positioning is performed in this way, the braking force and relative slip amount vary depending on the conditions of the blade, making the positioning state unstable. There is a risk of damage.

"Means for Solving the Problems" In view of such circumstances, the present invention includes a first roller having a protrusion of a desired shape formed on the outer circumferential surface, and a first roller that is arranged in parallel with the first roller and has the protrusion on the outer circumferential surface. A belt-shaped material processing device is provided with a second roller provided with a concave portion or an elastic body into which a second roller is fitted, and the belt-shaped material is passed between both rollers to cause the strip material to press the convex portion. A position adjusting member is provided at a required position on the outer circumferential surface of the roller so as to be retractable, and a recess or an elastic body is provided in which the position adjusting member is fitted when the other roller protrudes.
The feed amount of the strip material is adjusted according to the protrusion and retraction of the position adjustment member.

"Function" According to the above configuration, the feeding amount of the strip material can be adjusted according to the protrusion and retraction of the position adjustment member, so that no excessive force is applied to the strip material, and positioning can be performed smoothly and reliably. can.

``Embodiment'' The present invention will be described below with reference to the illustrated embodiment. In FIG.
and the second roller 2 are rotated in opposite directions at the same speed in synchronization with each other, and the strip material 3 inserted between them is wound around the second roller 2 side and then rotated. The liquid is discharged parallel to the direction opposite to the supply direction in step 3.

On the outer circumferential surface of the first roller 1, in the illustrated embodiment, convex portions 4a to 4d forming folded lines of the same shape are formed at four locations equally spaced in the circumferential direction, and on the outer circumferential surface of the second roller 2. Also formed are recesses 5a to 5d into which the respective projections 48 to 4d are fitted. Therefore, on the strip material 3 inserted between the first roller 1 and the second roller 2, a fold line of a desired shape is formed under pressure by the meshing of each convex part 4a to 4d and each concave part 5a to 5d, and each roller For each rotation of 1.2, fold lines of the same shape are formed at four locations along the longitudinal direction of the strip material 3.

As shown in FIGS. 1 and 2, grooves 8 extending along the axial direction are formed on the outer peripheral surface of the first roller 1 at intermediate positions between the respective convex portions 48 to 4d. A position adjusting member 9 is provided in the groove 8 so as to be freely protrusive and retractable from the outer peripheral surface of the first roller 1. Both ends of each position adjustment member 9 are connected to a piston 1 of an air cylinder device lO provided on the first roller 1.
1, and each piston 11 is connected to a spring 12.
By biasing the position adjustment member 9 inward in the radial direction, the position adjustment member 9 is normally prevented from protruding from the outer peripheral surface of the first roller 1. In addition, at this time, each position adjustment member 9 is slightly
It may be made to protrude from the outer peripheral surface of the roller 1.

Further, the radially inner portion of the cylinder 13 into which each piston 11 is slidably fitted in an airtight manner is connected to the first roller 1.
It communicates with a compressed air source (not shown) through an air passage 14 bored in the radial direction and an air passage 15 bored in the axial direction, and a solenoid valve (not shown) provided in the air passage 15 is opened to When compressed air is supplied into the cylinder 13, all the position adjusting members 9 can be made to protrude from the outer peripheral surface of the first roller 1 by a predetermined amount at the same time.

On the other hand, the second roller 2 is formed with recesses IG along the axial direction into which the warps are fitted when the position adjustment members 9 protrude. The strip material 3 is held and curved between the tip end surface and the inner surface of the recess 16, and the amount of feed of the strip material can be increased by the amount of the curvature.

Further, the strip material 3 is provided with printed portions 3a on which trademarks, patterns, etc. are printed at regular intervals, and a register mark 18 for position detection is provided for each printed portion 3a. This register mark 18 can be detected by a detector 9 installed a predetermined distance from the pair of rollers 1.2, and a signal from the detector is input to a control device (not shown). I'm letting you do it.

In addition to the signals from the detector 19, the control device manually generates signals from a detector (not shown) for detecting the rotation angle position of each of the rollers 2, and depending on the input timing of both signals, the printing unit 3a The position adjustment member The number 9 is made to stand out.

At this time, the interval between the printed parts 3a printed on the strip material 3 is set to be a distance b (3i) wider than the interval between the adjacent convex parts 4a to 4d, and the position can be adjusted accordingly. In a normal state in which the member 9 is retracted, the position of the printed portion 3a of the strip material 3 and each of the convex portions 43 to 4d is set to gradually shift toward the rear side in the conveyance direction.

In the above configuration, in the normal state in which the position adjustment member 9 is retracted, the positions of the printed portion 3a of the strip material 3 and each of the convex portions 4a to 4d gradually shift toward the rear side in the conveyance direction, as described above. Eventually, the amount of positional deviation will exceed the allowable range. Then, the control device opens a solenoid valve (not shown) provided in the air passage 15 to close all position adjustment members 9.
stand out all at once.

When each position adjustment member 9 is projected, the strip material 3 is curved when each position adjustment member 9 is fitted into the recess 16, and when the strip material 3 is curved, the strip material 3 is shaped by the amount of the curvature. Since the feed amount of the material 3 increases, the printing section 3a is displaced forward in the conveying direction relative to each of the convex sections 4a to 4d. This operation is repeated once or multiple times, and when the positional deviation plate is within a predetermined tolerance range,
The control device closes a solenoid valve (not shown) provided in the air passage 15, and thereby all the position adjusting members 9 are returned to their original retracted positions by the elastic force of the spring 12.

It should be noted that the amount of protrusion of the position adjustment member 9 can be adjusted in multiple steps or steplessly during the rotation of each of the rollers 1.2. Further, instead of forming the recesses 5a to 5d and the recess 16, an elastic body may be used.
A to 4d may be used as cutting blades.

"Effects of the Invention" As described above, according to the present invention, the feeding amount of the strip material can be adjusted according to the protrusion and retraction of the position adjustment member, so that unreasonable force is applied to the strip material unlike the conventional device. Without a doubt,
This provides the effect that positioning can be performed smoothly and reliably.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG.
It is a sectional view along the IT-U line of a figure.

Claims (1)

[Scope of Claims] A first roller having a protrusion of a desired shape formed on its outer circumferential surface, and a second roller provided in parallel with the first roller and having a concave portion or an elastic body on its outer circumferential surface into which the convex portion is fitted. In the belt-shaped material processing device, the belt-shaped material is provided with two rollers, and the belt-shaped material is passed between both rollers so that the belt-shaped material presses the convex part. a recess or an elastic body into which the position adjustment member is fitted when the position adjustment member protrudes on the other roller;
A positioning device for a band-shaped material, characterized in that the feeding amount of the band-shaped material is adjusted according to the protrusion and retraction of the position adjustment member.