JP2000109032A - Glued-part check device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To check, in a gluing machine, whether a glued part is satisfactory or unsatisfactory without variation in check reference and failure in the sensing of a detect, by wrapping the glued part of a flexible wrapping material round a projection-having guide roller, thereby projecting it, and by detecting the displacement of the glued part by a displacement sensor. SOLUTION: A projection-having guide roller 1 is disposed so that the glued part 12 of a carried flexible wrapping material 11 and the projecting part of the guide roller 1 are in the same position. The displacement of the glued part 12 of the flexible wrapping material 11 raised in an upright position by the projecting part 6 is detected by a displacement sensor 2. In the case where the glued part 12 where two edges are superimposed is unsatisfactory when the glued part 12 is projected by the projection part 6, the two edges separate and at least one of the edges floats and moves beyond specific displacement. A displacement signal output from the displacement sensor 2 is inputted to a judging means 3, and in the case where the glued part 12 is unsatisfactory because of the displacement outside the specific range, a labeler 4 sticks labels 14a-14c to the vicinity of the corresponding part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention belongs to the technical field of manufacturing flexible packaging materials. In particular, the present invention relates to a bonded portion inspection apparatus for inspecting the quality of a bonded portion of a long sheet-shaped soft packaging material that has been subjected to a gluing process in which two sides are overlapped and glued.

[0002]

2. Description of the Related Art In the process of manufacturing a long sheet-shaped soft packaging material, a gluing process is performed in which two sides are overlapped and glued. As an example, in a manufacturing process of a soft packaging tubular product used for a label of a PET bottle or the like, a gluing process is performed by a gluing machine. Glue paste processing machine is to bend a long sheet-shaped base material made of plastic material etc. into a tubular shape, apply glue to at least one of the two sides, and superimpose the two sides to bond by bonding To perform gluing.

[0003]

In this gluing process, there is a problem in that a bonding defect occurs at the bonded portion where the gluing process has been performed. For example, a defect occurs due to the coating amount and the coating width of the glue deviating from the specified values (smaller than the specified values). The soft-packaged tubular product manufactured by the gluing process is made of a shrink film material, and is finally covered on a PET bottle and fixed by heating and shrinking. At this time, in the case of a soft-packaged cylindrical product deviating from the specified value, the bonding strength of the bonding portion is not sufficient and the bonding portion breaks.

In order to prevent this defect from occurring, an operator visually inspects in a processing machine whether the coating amount and the coating width of the glue do not deviate from specified values. However, it is impossible for an operator to always perform a visual inspection because of other operations. Further, even if a visual inspection can always be performed with a dedicated person, variation in the inspection standard and oversight of a defect cannot be avoided as long as the inspection is performed by a human.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a bonded part inspection apparatus for inspecting the quality of a bonded part of a soft packaging material with a gluing machine.

[0006]

The above objects are achieved by the present invention described below. That is, the bonded portion inspection apparatus according to the first embodiment of the present invention is a long sheet-shaped soft packaging material on which a gluing process is performed in which two sides are overlapped and glued to form a bonded portion. A bonding portion inspection device for inspecting the quality of the bonding portion, comprising a member with a protrusion, a displacement sensor, and a determination means, wherein the member with a protrusion has a peripheral surface that is continuous with a rotation direction. Wherein the position of the bonding portion and the protrusion of the soft packaging material to be transferred are aligned with each other, and the displacement sensor is protruded by the protrusion. The displacement of the bonding portion is detected and a displacement signal is output, and the determination means inputs the displacement signal, and when the displacement is within a predetermined range, the bonding portion is determined to be good, and the displacement is determined. Is out of the predetermined range, the bonded portion is determined to be defective, Is obtained so as to output the over data.

According to the present invention, the member with a projection is a member having a projection, and is arranged so that the position of the bonding portion of the soft packaging material to be transferred and the projection are coincident with each other. When the displacement of the bonding portion of the packaging material protruded by the portion is detected and a displacement signal is output, and the displacement signal is input by the determination means and the displacement is within a predetermined range, the bonding portion is determined to be good. If the displacement is out of the predetermined range, the bonded portion is determined to be defective, and good / bad data is output. That is, when the bonding portion is protruded by the protruding portion, if the bonding portion obtained by overlapping the two side portions is defective, at least one of the two sides is separated and at least one side is lifted up to a predetermined height. Deviates from displacement. On the other hand, when the bonding portion is good, the two side portions do not separate and fall within a predetermined displacement. Therefore, there is provided a bonding portion inspection apparatus for inspecting the quality of a bonding portion of a soft packaging material with a glue bonding machine.

According to a second aspect of the present invention, there is provided the bonded part inspecting apparatus according to the first aspect, wherein the member with the projected part has a projecting part which is continuous in a rotating direction on a peripheral surface. This is a guide roller. According to the present invention, the guide roller with projection is arranged such that the position of the bonding portion of the soft packaging material to be transferred and the position of the projection match, and the bonding portion of the packaging material is protruded by the projection.

According to a third aspect of the present invention, there is provided a bonded part inspection apparatus according to the first aspect, wherein the member with projections is a rod-shaped pressing means having a rod-shaped projection. Things. According to the present invention, the stick-shaped pressing means is arranged such that the position of the bonding portion of the soft packaging material to be transferred and the position of the projection coincide with each other, and the bonding portion of the packaging material is protruded by the projection.

According to a fourth aspect of the present invention, there is provided a bonded portion inspection apparatus according to the first aspect, wherein the member with projections is a narrow roller having a peripheral surface of the roller as a projection. A bonding part inspection apparatus, characterized in that: According to the present invention, the narrow roller is disposed such that the position of the bonding portion of the soft packaging material to be transferred and the position of the protrusion match, and the bonding portion of the packaging material is caused to protrude by the protrusion.

In a fifth aspect of the present invention, there is provided the bonded part inspecting apparatus according to any one of the first to fourth aspects, wherein the good / bad data outputted by the determining means is inputted. When the good / bad data is data determined to be defective, a labeler for attaching a label is provided near a portion of the soft packaging material corresponding to the determination. According to the present invention, if the good / bad data output by the determining means is input by the labeler and the good / bad data is data determined to be defective, a label is placed near a portion corresponding to the determination of the soft packaging material. Affixed. Therefore, also in the post-process, the defective portion of the soft packaging material can be determined based on the presence or absence of the label.

According to a sixth aspect of the present invention, there is provided a bonded part inspection apparatus according to any one of the first to fifth aspects, wherein the displacement sensor is an ultrasonic displacement sensor. It is. According to the present invention, since the displacement sensor is an ultrasonic displacement sensor, the displacement sensor detects the displacement without being affected by the optical characteristics (transparency, opacity, color, shading), material, physical properties, and the like of the soft packaging material. be able to.

[0013]

Next, the present invention will be described with reference to embodiments. FIG. 1 shows the configuration of the bonded part inspection apparatus of the present invention
Shown in In FIG. 1, 1 is a guide roller with a projection, 2 is a displacement sensor, 3 is a judgment means, 4 is a labeler, 5 is an alarm, 6 is a projection, 11 is a soft packaging material, 12 is a bonding section, 1
3 is a winding body, 14a, 14b, 14c is a label.
The guide roller 1 with a projection is a guide roller having a projection 6 on the peripheral surface that is continuous in the rotation direction. As shown in FIG. 1, the projection 6 of the guide roller 1 with projection has a rotation that changes the distance from the rotation axis with respect to a normal guide roller having a cylindrical peripheral surface at a constant distance from the rotation axis. It has a body-shaped peripheral surface. That is, inside the specific range of the rotation axis, there is a peripheral surface whose distance from the rotation axis is larger than that of the outside of the specific range, and the distance of the peripheral surface from the rotation axis becomes larger. The portion is the protrusion 6.

The guide roller 1 with projections is provided downstream of a portion (not shown) where a gluing process is performed in a gluing machine (the whole is not shown). The soft packaging material 11 is transported by the gluing machine in the direction of the arrow. After the soft packaging material 11 is transported via the guide roller 1 with projections, it is finally wound up (not shown in the middle) at a winding section (not shown) of a glue pasting machine and wound up. The body 13 is formed.

The bonding portion 1 of the transferred soft packaging material 11
The guide roller with projection 1 is arranged such that the position of the projection roller 6 coincides with the position of the projection 6 of the guide roller 1 with projection. For example, the guide roller 1 with a projection is supported by a frame of a gluing machine so that the position can be adjusted in the direction of the rotation axis, and the position is adjusted. The position of the bonding portion 12 and the protrusion 6 are made to coincide by a method such as adjusting the position of the material 11 in the direction perpendicular to the transfer direction.

The displacement sensor 2 detects the displacement of the bonding portion 6 of the soft packaging material 11 projected by the projection 6, and outputs a displacement signal. The displacement sensor 2 detects a change (displacement) in the distance between the sensor and the target object. The displacement sensor 2 includes:
A laser type displacement sensor, an ultrasonic type displacement sensor, a cantilever type displacement sensor, a capacitance type displacement sensor, and the like are known. A laser displacement sensor irradiates a target object with a laser beam, detects the position of a laser spot with a position sensor, and detects the distance based on the principle of triangulation. The ultrasonic displacement sensor detects the distance based on the time from when the transmitted ultrasonic pulse is reflected by the target object until it is received back. The cantilever type displacement sensor contacts the cantilever with a target object, detects a change in position and angle of the cantilever with a differential transformer or the like, and converts the change into a displacement. The capacitance type displacement sensor detects a change in capacitance in a space between the sensor and the target object by forming a bridge circuit, an oscillation circuit, or the like, and converts the change into a displacement.

The displacement sensor 2 that can be used in the present invention is not particularly limited in terms of system, but has some restrictions. For example, the transfer speed of the soft packaging material 11 is high (1
00 to 300 m / min), and the response speed of the displacement sensor 2 needs to be correspondingly high. Further, accurate measurement of displacement cannot be performed with a cantilever in which a force large enough to deform the soft packaging material 11 acts as compared with the rigidity of the soft packaging material 11. Further, in the case of a soft packaging material 11 having strong optical characteristics such as strong specular reflection characteristics, high transparency, and extremely low light reflectance, an optical displacement sensor such as a laser method is not suitable. The ultrasonic displacement sensor is suitable as the displacement sensor used in the present invention, and can be displaced without being affected by the optical characteristics (transparency, opacity, color, density), material, physical properties, etc. of the soft packaging material. Can be detected.

FIG. 2 shows the principle of detecting whether the bonding portion 12 of the soft packaging material 11 is good or bad by a displacement sensor. 2, the same parts as those in FIG. 1 are denoted by the same reference numerals.
2 is a displacement sensor, 6 is a protrusion, and 11 is a soft packaging material. As shown in FIG. 2, the soft packaging material 11 is obtained by laminating two sides running in the longitudinal direction of a soft packaging material as a long sheet-shaped raw material in a tubular shape and pasting the same. It is a soft packaging material as a product. FIG. 2A shows a case where the bonding part 6 to be detected is good, and FIG. 2B shows a case where the bonding part 6 to be detected is defective.

As shown in FIG. 2 (A), when the bonding portion 12 is protruded by the protruding portion 6 and the bonding portion 12 obtained by overlapping the two sides is good, the two The side portions do not separate and fall within a predetermined displacement. On the other hand, as shown in FIG. 2B, when the bonding portion 12 is protruded by the protruding portion 6 and the bonding portion 12 obtained by overlapping the two sides is defective, the two sides are At least one side is lifted up by separating the part and deviates from a predetermined displacement.

That is, when the bonding portion 12 is defective during transfer by a normal guide roller or the like, the projection 6 is not overlooked because there is no difference from the appearance when the bonding portion 12 is good. However, the guide roller 1 having the protrusions 6
By using, when the bonding portion 12 is defective, the bonding portion 12 is deformed by the protrusion 6 so that the appearance is clearly different from that in the case where the bonding portion 12 is good, and the latent portion is latent. The defect becomes apparent.

Returning to FIG. 1, the description will be continued. The judging means 3 receives the displacement signal output from the displacement sensor 2 and judges that the detected bonding portion 6 is good when the displacement is within a predetermined range, and when the displacement is out of the predetermined range. , The detected bonding unit 6 is determined to be defective, and good / bad data is output. The determination unit 3 can be configured by using a logic circuit or software and hardware of a data processing device such as a microcomputer or a personal computer.

The labeler 4 inputs the good / bad data output by the judging means 3 and, if the good / bad data is data judged to be bad, puts a label near a portion corresponding to the judgment of the soft packaging material 11. Stick it. Labels 14a to 14 in FIG.
As shown in 14c, the label is affixed to the side portion of the soft packaging material 11 (the folded portion of the flexible packaging tubular product) so that the soft packaging material 11 is wound up to form the rolled body 13. Also, the presence or absence and the position of the defect can be determined from the appearance.

Since the soft wrapping material 11 is in the form of a long sheet, when a defect occurs in the sizing machine,
It is difficult to remove the defective part immediately. In addition, stopping the gluing machine to remove the defective portion is often not preferable because it causes a problem of the stop time and the occurrence of a defect due to a change in conditions at the time of resuming, which hinders the production. Therefore, when a defect occurs, if the cause of the defect can be managed without stopping the gluing machine and the occurrence of the defect can be eliminated, the production is continued while the defective portion remains on the winding body 13. Is done. In this case, when a small winding (a product having a predetermined length) is obtained from the long winding body 13 in a later step, a defective portion is removed.

The alarm device 5 inputs the good / bad data output by the judging means 3 and, if the good / bad data is data judged to be bad, generates an audible alarm and an operator of the gluing machine. Notify the occurrence of failure. This notification allows the operator to take appropriate measures.

In the above, the guide roller 1 with a projection is shown in FIG. However, the protrusion 6 is a feature of the configuration of the present invention, and the present invention is not limited to the guide roller 1 with the protrusion as long as the member has the protrusion. FIG. 3 shows an example in which a rod-shaped pressing means having a rod-shaped projection is applied to the bonded portion inspection apparatus of the present invention as a member with a projection instead of the guide roller 1 with a projection.
Shown in FIG. 4 shows an example in which a narrow-width roller having a peripheral surface of the roller as a projection is applied to the bonded portion inspection apparatus of the present invention.

[0026]

As described above, according to the present invention, there is provided a bonded part inspection apparatus for inspecting the quality of a bonded part with a glue processing machine. According to the bonding portion inspection device of the second aspect of the present invention, the bonding portion of the packaging material is made to protrude by the protrusion of the protrusion-provided guide roller. Moreover, according to the bonding part inspection apparatus of the third aspect of the present invention, the bonding part of the packaging material is protruded by the protruding part of the rod-shaped pressing means. According to the bonding portion inspection apparatus of the fourth aspect of the present invention, the bonding portion of the packaging material is made to project by the projection of the narrow roller. Further, according to the bonded portion inspection apparatus of the fifth aspect of the present invention, it is possible to determine the defective portion of the soft packaging material based on the presence or absence of the label even in the subsequent process. Further, according to the bonded part inspection apparatus of the sixth aspect of the present invention, the displacement is detected without being affected by the optical characteristics (transparency, opacity, color, shading), material, physical properties, etc. of the soft packaging material. can do.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a bonded part inspection apparatus of the present invention.

FIG. 2 is a view showing the principle of detecting the quality of a bonding portion in a soft packaging material by a displacement sensor.

FIG. 3 is a view showing an example in which a rod-shaped pressing means having a rod-shaped projection is applied to the bonded part inspection apparatus of the present invention.

FIG. 4 is a view showing an example in which a narrow roller having a peripheral surface of the roller as a projection is applied to the bonded portion inspection apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Guide roller with projection 2 Displacement sensor 3 Judgment means 4 Labeler 5 Alarm 6 Projection part 7 Bar-shaped pressing means 8 Narrow roller 11 Soft packaging material 12 Bonding part 13 Winding body 14a, 14b, 14c Label

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasutaka Fujii 1-1-1, Ichigaya-Kagacho, Shinjuku-ku, Tokyo Inside Dai Nippon Printing Co., Ltd. (72) Inventor Tsuyoshi Asakura 1-1-1, Ichigaya-cho, Shinjuku-ku, Tokyo No. 1 Inside Dai Nippon Printing Co., Ltd.

Claims (6)

[Claims] 1. A paste for inspecting the bonding portion of a long sheet-shaped soft packaging material which has been subjected to a gluing process in which two sides are overlapped and glued to form a bonded portion. A joint inspection device, comprising a member with a protrusion, a displacement sensor, and a determination unit, wherein the member with a protrusion is a member having a protrusion, and the bonding unit of the soft packaging material to be transferred. The displacement sensor is disposed so as to coincide with the position of the protrusion, the displacement sensor detects a displacement of the bonding portion of the soft packaging material protruded by the protrusion, and outputs a displacement signal. A displacement signal is input, and when the displacement is within a predetermined range, the bonded portion is determined to be good, and when the displacement is out of the predetermined range, the bonded portion is determined to be defective. A bonded part inspection apparatus, which outputs good / bad data. 2. The apparatus for inspecting a bonded part according to claim 1, wherein
The bonding portion inspection apparatus according to claim 1, wherein the member with a protrusion is a guide roller with a protrusion having a protrusion on the peripheral surface that is continuous in the rotation direction. 3. The apparatus for inspecting a bonded part according to claim 1, wherein
The bonding member inspection device, wherein the member with a projection is a rod-shaped pressing unit having a rod-shaped projection. 4. The apparatus for inspecting a bonded part according to claim 1, wherein
The bonding member inspection apparatus according to claim 1, wherein the member with a protrusion is a narrow roller having a peripheral surface of the roller as a protrusion. 5. A bonded part inspection apparatus according to claim 1, wherein said good / bad data output by said determining means is input, and said good / bad data is data determined to be defective. In this case, a bonding part inspecting apparatus further comprising a labeler for attaching a label near a portion of the soft packaging material corresponding to the determination. 6. A bonding part inspection apparatus according to claim 1, wherein said displacement sensor is an ultrasonic displacement sensor.