JP4328081B2 - Standard cutting device for cylindrical labels for packaging - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a constant length cutting device for a packaging cylindrical label that cuts a long tube into a packaging cylindrical label of a predetermined length that is mounted on the outer peripheral surface of a packaged body such as a bottle or a can. The present invention relates to a fixed length cutting device that can accurately cut a cylindrical label having a predetermined length without changing the position of an optical sensor that detects the cutting position of a long tube.
[0002]
[Prior art]
In general, a cylindrical label for packaging is attached to the outer peripheral surface of a packaged object (hereinafter referred to as a container) such as a bottle or a can, and a product name / trademark display, decoration by color / pattern, explanation of contents, Protection is done.
[0003]
For this packaging cylindrical label, a shrink label or self-shrinking synthetic resin film formed into a cylindrical shape with a heat-shrinkable synthetic resin film having an inner diameter slightly larger than the outer diameter of the container has an inner diameter slightly smaller than the outer diameter of the container. There is a stretch label formed in a cylindrical shape.
[0004]
The former shrink label can be attached to the container by placing the label on the outer peripheral surface of the container while opening the opening means, and then heating and shrinking it with steam or hot air to attach it to the outer peripheral surface of the container. In the latter case, the stretch label is attached to the container by opening the label with an opening means, and further covering the container while expanding the diameter with the diameter expanding means. This is performed by a method or apparatus that is contracted and mounted on the outer peripheral surface of the container.
[0005]
Both the shrink label and stretch label are attached to the outer peripheral surface of the container by almost the same method and apparatus. In general, however, the shrink label is formed by making the circumference of the cylindrical label longer than the circumference of the container. Therefore, the cylindrical label can be pulled out from the outside by an opening means such as suction and swelled, and can be opened to be attached to the container without applying force to the container in a fixed state. Inserting and mounting / wearing is performed.
[0006]
In addition, since the peripheral length of the cylindrical label is shorter than the peripheral length of the container, the stretch label is bulged by opening the cylindrical label from the outside by an opening means such as suction, and then opening the label. The cylindrical label is enlarged and attached to the container using a mounting device having a locking claw, etc., and the container is placed on the cylindrical label in a state where the cylindrical label is pushed and spread from the inside with a drag that does not lose the elasticity of the cylindrical label. It is carried out by pushing up and inserting it.
[0007]
Here, the attachment to the cylindrical container will be described by exemplifying a stretch label.
[0008]
A flat long tube having creases on both side edges is formed from a synthetic resin film and wound into a roll shape. The long tube wound in this roll shape is fed through a support device composed of a rubber roller or the like. The long tube is cut intermittently to a predetermined length with a cutter of a cutting device to form a flat cylindrical label.
[0009]
The flat cylindrical label is adsorbed by the suction cups of the pair of suction devices, and the suction cups of the pair of suction devices are separated from each other to form a cylindrical label that is bulged and opened in an approximately elliptical cylindrical shape. Further, the cylindrical label that is bulged and opened is inserted into a label locking claw that is provided in a state of being contracted and closed by a cylindrical label mounting device disposed below the cylindrical label.
[0010]
Next, the label locking claw of the mounting device is expanded to a predetermined shape, so that the cylindrical label changes from a substantially elliptical cylindrical shape to a contour shape of the container, for example, a substantially cylindrical shape or a substantially elliptical cylindrical shape. So that the diameter is expanded. For example, the upper part of the cylindrical label where the label locking claw of the mounting device is not inserted is substantially the same as the original size. Further, when the suction of the cylindrical label is stopped, the suction device moves backward and returns to the original position.
[0011]
Subsequently, the container is lifted from below by the lifting device with respect to the expanded cylindrical label, and is inserted inside the expanded cylindrical label via the label locking claw of the mounting device, and is attached to the outer peripheral surface of the container. A cylindrical label is mounted.
[0012]
After that, the container on which the cylindrical label is mounted is gripped by the gripping tool from the outside of the cylindrical label, lifted by the gripping tool together with the cylindrical label, and extracted from the label locking claw of the mounting device. A cylindrical label is attached to the surface.
[0013]
When the container with the cylindrical label is released from the gripping tool, it is transferred to a predetermined position by the lifting device and the transport device.
[0014]
In a cutting device that cuts this long tube into a predetermined length with a cutter to form a flat cylindrical label, the cutting device that cuts the long film from the original fabric through the guide roller is positioned below the feeding roller. And a fixed cutter blade and a rotary cutter blade that cuts in cooperation with the fixed cutter blade, and a predetermined position indicating a position to be cut printed on a fed long film provided above the guide roller. A detection sensor for detecting the mark of the sheet is a sensor that detects a predetermined mark for cutting a long film and is controlled so that the cutting device and the feeding roller are driven in conjunction with each other based on the signal of the detection sensor. Are known.
[0015]
[Patent Document 1]
JP-A-8-119234 (page 2-5, FIGS. 1 and 2)
Similarly, an appropriate perforation is formed on a printing apparatus or tube that prints the date of manufacture and expiration date, in which the original tube pulled out by the unwinding roll is arranged between the unwinding roll and the feed roller. The mark is detected by a mark detector that detects the marks attached at each tube pitch, and is cut at an appropriate pitch position according to the detection timing. Some that are cut by a device are also known.
[0016]
[Patent Document 2]
JP-A-11-236153 (page 3-4, FIGS. 1 and 2).
[0017]
[Problems to be solved by the invention]
All of the known cutting devices detect a predetermined mark indicating a position to be cut on a long film of the original fabric with a detection sensor, and based on a signal transmitted from the detection sensor, The feeding roller is interlocked, driven, and controlled, and the position of the predetermined mark indicating the position to be cut on the original long film is changed, in other words, the length of the predetermined label is changed. Then, the time from when the predetermined mark is detected by the detection sensor until the cutting device is driven is changed, or the distance between the detection sensor and the cutting device is changed.
[0018]
As a result, not only the cutting process but also the entire time of the label mounting process changes in the former, and the latter interrupts the label mounting process, which is not preferable.
[0019]
[Means for Solving the Problems]
In order to solve the problem to be solved by the present invention, a fixed length cutting device for a packaging cylindrical label according to the present invention is an opening device for helping the separation of the inner surface of a flat long tube having folds on both side edges. A feeding roller that is disposed downstream of the opening device and intermittently feeds the long tubes spaced apart from each other, and a cutting position of the long tube that is disposed downstream of the feeding roller. An optical sensor for detecting a detection mark indicating the position, and a cutter which is disposed downstream of the optical sensor and moves forward and backward in a direction crossing the traveling direction with respect to the elongated tube traveling from the opening device. and, a cutting device for a tubular label of the elongated tube is cut to the desired length, with rotating the feeding roller based on a signal from the light sensor, and attached to the feeding roller encoder The feeding roller receives the pulse signal generated from the detection mark until the length from the detection mark to the cutting position matches the predetermined length of the cylindrical label and the pulse signal matches a preset reference pulse signal. The control means for controlling the amount of rotation of the long tube by the pulse signal, and the cylindrical label portion of the long tube positioned at the downstream side of the cutter according to the length of the cylindrical label to be cut And a suction device for adsorption .
[0020]
DETAILED DESCRIPTION OF THE INVENTION
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a cylindrical label regular cutting apparatus according to the present invention will be specifically described below with reference to the drawings. In addition, in this embodiment, what was applied to the stretch label is shown.
[0021]
FIG. 1 conceptually shows each process from the long tube T to the mounting of the cylindrical label L on the cylindrical container B using the apparatus of the present invention.
[0022]
A flat long tube T having folds on both side edges is formed from a synthetic resin film (not shown) and wound into a roll (not shown), and the long tube T is supported by a roll. While being intermittently fed by the feeding roller 23 through the apparatus 1 and the feeding roller 22, the auxiliary opening device 21 of the opening device 2 is passed through and the primary diameter is expanded, and the folds and the flat portions on both side edges are separated to make a long shape. A detection mark indicating the cutting position of the tube T is detected by the optical sensor 242, and the feeding roll 23 is temporarily stopped so that the detected detection mark is positioned at the cutter 241 of the cutting device 24, and the long tube T The predetermined position (detection mark) is cut by the cutter 241 of the cutting device 24 to obtain a flat cylindrical label L having a predetermined length. The flat cylindrical label L is adsorbed by the suction cups 251 of the pair of suction devices 25, and then the flat cylindrical label L is air that is provided with the suction cups 251 of the pair of suction devices 25 in the suction device 25. The cylinder label L is separated from each other by driving a cylinder, a hydraulic cylinder, or a servo motor (both not shown), and is formed into a cylindrical label L having an opening that swells in a substantially elliptic cylindrical shape. Transfer to the label mounting apparatus 3 in the process.
[0023]
When the cutting is completed, the feeding roll 23 once stopped is driven again, and the long tube T is fed out.
[0024]
The label mounting device 3 is disposed below the suction device 25 while the cylindrical label L held in the bulging / opening state by the suction device 25 is held in the bulging / opening state by the suction device 25. Is inserted into the label locking claw 31 in the contracted state prepared in the above.
[0025]
Next, while the suction device 25 continues the bulging / opening state of the cylindrical label L, the label locking claw 31 of the label mounting device 3 is expanded to a predetermined shape, so that the cylindrical label L is substantially elliptical. The diameter is expanded by being pushed from a bulged opening to an opening substantially similar to the outer shape of the container, for example, a substantially cylindrical opening or a substantially elliptical cylindrical opening. The swelling / opening of the cylindrical label L by the suction device 25 is finished when the diameter expansion of the cylindrical label L by the label locking claw 31 of the label mounting device 3 is started.
[0026]
The cylindrical label L is not inserted with the label locking claw 31 of the label mounting device 3, for example, the upper portion remains substantially the original size. In addition, when the suction of the cylindrical label L is stopped, the suction device 25 returns to the original position.
[0027]
At the same time as the diameter expansion of the cylindrical label L, the lower label presser 5 moves laterally to the cylindrical label L having an opening that is expanded in a substantially cylindrical shape, so that the outer side of the lower end portion of the cylindrical label L is moved outward. The cylindrical label L is gripped to prevent it from falling off the label locking claw 31. With respect to this cylindrical label L, the cylindrical container B is lifted by the lifting device 4 from below and inserted into the opening inside the expanded cylindrical label L via the label locking claw 31 of the label mounting device 3. Thus, a cylindrical container B having a cylindrical label L mounted on the outer peripheral surface is obtained.
[0028]
Thereafter, the cylindrical container B on which the cylindrical label L is mounted is released from the label presser 5 and is gripped by the upper label presser 6 from the outside of the cylindrical label L. Subsequently, the cylindrical label L The label holder 6 and the lifting / lowering device 4 are lifted in synchronism with the container B, the label locking claw 31 of the label mounting device 3 is extracted from the inside of the cylindrical label L, and the cylinder is placed on the outer peripheral surface of the cylindrical container B. A label L is attached.
[0029]
The cylindrical container B on which the cylindrical label L is mounted is sent to a predetermined position by the lifting device 4 and the unloading device (not shown) while the label pressing body 6 is opened.
[0030]
As shown in FIG. 2, the cylindrical label fixed length cutting apparatus of the present invention intermittently feeds a flat long tube T having folds on both side edges with a feed roller 23 and cuts it to a predetermined length. When forming the cylindrical label L, the detection mark indicating the cutting position at the predetermined position of the long tube T is detected by the optical sensor 242, and the rotation amount of the feeding roller 23 is controlled to control the long tube L. The cutting position is matched with the cutting device 24 and cut to a predetermined length. In other words, this regular cutting device has a substantially triangular (sharp) mandrel 211, a small auxiliary roller 212, and two valgus pieces that help to separate the inner surface of a flat long tube T having folds on both side edges. The auxiliary opening device 21 formed of a separator 213 and the opening device 2 formed of a feed roller 22 positioned outside the small auxiliary roller 212 of the auxiliary opening device 21, and a long length positioned below the auxiliary opening device 21. It is rotated by a cylindrical label cutting device 24 having a cutter that cuts the tubular tube T into a predetermined length to form a cylindrical label L, and an electric motor 231 arranged between the opening device 2 and the cutting device 24. The feeding roller 23 that can control the peripheral speed, the encoder 233 that is attached to the electric motor 231 of the feeding roller 23 and generates a pulse signal (number of pulses), and the generated pulse signal ( A pulse converter 234 for converting the number of pulses) into a voltage, etc., a light sensor 242 for detecting a detection mark indicating the cutting position of the elongated tube T, and a signal generating means for generating a signal attached to the light sensor 242 ( And a sequencer (control means) 235 for rotating the feeding roller 23 based on a signal from the signal generating means and controlling the rotation amount of the feeding roller 23 by the pulse signal (number of pulses), and a sequencer ( And a controller 232 that performs operations such as starting and stopping the electric motor 231 according to a command signal from the control means). The pulse signal (number of pulses) may be received directly by a sequencer (control means) without passing through a converter.
[0031]
A method for cutting from a long tube T into a cylindrical stretch label L for packaging having a predetermined length with the fixed length cutting device for a cylindrical label configured as described above will be described with reference to FIGS. .
[0032]
First, a flat and long tube T formed from a synthetic resin film and having folds on both side edges wound around a roll-like body (not shown) is suspended through the support device 1 and its lower opening is an auxiliary opening. The long tube T is sandwiched between the small auxiliary roller 212 and the upper feed roller 22 through the triangular mandrel 211 of the apparatus 21, and the small auxiliary roller 212 is placed on the flat inner surface of the long tube T. The feed roller 22 is in contact with the flat outer surface of the long tube T, and as a result, the auxiliary opening device 21 is built in the long tube T in a manner away from the folds on both side edges of the long tube T. The
[0033]
As shown in FIG. 3, this long tube T is provided with strip-shaped non-printing clear portions in the width direction between the printing portions P and the printing portions P at predetermined intervals. Mark TM.
[0034]
Further, the elongated long tube T extends toward the cutting device 24 provided in the triangular mandrel 211, and is formed in a valgus shape from the overlapping edge overlapping portion (or the root overlapping portion). The long tube T can be intermittently drawn out in the direction of arrow A by an electric motor 231 that rotationally drives the feeding roller 23 in a state of being folded flatly.
[0035]
The extended long tube T is detected by the optical sensor 242 to detect a detection mark TM indicating a cutting position provided at a predetermined equal interval on the long tube T, and the detection mark TM is detected. Based on this, the number of pulses emitted from the encoder is counted, and the electric motor 231 is driven to rotate the feeding roller 23 until a preset reference pulse number is reached. When the preset reference pulse number is reached, the detection mark TM is cut. It is formed on the cylindrical label L having a predetermined length by stopping at the position of the 24 cutters 241 and cutting by the operation of the cutter 241 of the cutting device 24 at the position of the detection mark TM indicating the cutting position at the time of stopping. The
[0036]
In the sequencer 235, a preset reference pulse number N corresponding to the length from the detection mark TM indicating the cutting position of the long tube T to the cutter 241 of the cutting device 24 (x value in FIG. 3) is stored in advance. In addition, the timing signal is input to the sequencer 235 when the detection mark TM is detected by the optical sensor 242.
[0037]
Further, a signal from an encoder 233 connected to the feeding roller 23 as a pulse signal generating means is input to the sequencer 235, and the number of pulses is counted from the timing signal at which the detection mark TM is detected. Then, the electric motor 231 is stopped.
[0038]
Thereafter, in a state where the cylindrical label L formed in a predetermined shape is sucked and held by the suction cup 251 of the suction device 25, an air cylinder or a hydraulic cylinder provided in the suction device 25, or a servo motor (both not shown). ) Is moved in the direction of separation, and the cylindrical label L with the upper and lower free edges is required to operate the suction device 25 and swells to a sufficient opening or swells to an arbitrary opening. It is taken out and transferred to a cylindrical label mounting device in the next process.
[0039]
Aspirate device 25, as shown in FIG. 2, adsorb the cylindrical label formed by cut by a cutter 241 having a predetermined distance away cutting apparatus an elongate tube T at position 24 from the end portion L of the separator 213 that holds Te.
[0040]
As described above, the fixed length cutting device for a cylindrical label according to the present invention is adapted to intermittently feed a flat long tube having folds on both side edges with a feed roller and cut it to a predetermined length to form a cylindrical label. The detection mark indicating the cutting position at the predetermined position of the long tube is detected by an optical sensor, and the rotation amount of the feeding roller is controlled to match the cutting position of the long tube with the cutting device. . The control means (sequencer) stores in advance a set reference pulse number corresponding to the length indicating the cutting position from the detection mark indicating the cutting position of the long tube, and when the detection mark is detected by the optical sensor. The timing signal is input to the control means (sequencer), the amount of rotation of the driving roller driving motor is controlled by the timing signal at the time of detection, and a flat long tube having folds on both side edges is predetermined. It can be formed into a long cylindrical label.
[0041]
In particular, it is possible to form a cylindrical label with good dimensional accuracy because it can be precisely controlled by combining an encoder for generating a pulse signal attached to the motor of the optical sensor and the feeding roller and a control means.
[0042]
Moreover, the cylindrical label fixed length cutting device of the present invention has a relatively narrow width as long as detection marks such as printing (colored) or non-printing (colorless) indicating the cutting position are provided on the long tube. The present invention can be applied to a long tube (or cylindrical label) having a relatively wide width from a long tube (or cylindrical label), for example, a long tube (or cylindrical label) having a folding diameter of 50 mm to 250 mm. .
[0043]
Furthermore, a stretch label that is flat and has an inner diameter slightly smaller than the outer diameter of the container can of course be applied to a shrink label that is flat and has an inner diameter slightly larger than the outer diameter of the container.
[0044]
【The invention's effect】
According to the cylindrical label fixed length cutting device of the present invention, when changing the length of the cylindrical label, the number of pulses that matches the length from the detection mark stored in advance in the control means to the cutting position. By changing the above, it is possible to form a cylindrical label having a target length without stopping the devices.
[0045]
In addition, by combining an optical sensor and an encoder that generates a pulse signal attached to the electric motor of the feeding roller, and a control means, etc., detection marks indicating the cutting position in the extended long tube are successively detected by the optical sensor. Since the motor of the feeding roller is controlled based on the pulse signal based on this, the reference point (detection mark) to be cut is always updated (reset), and a cylindrical label with good dimensional accuracy can be formed. it can.
[0046]
Furthermore, by combining an encoder that generates a pulse signal attached to the motor of the optical sensor and the feeding roller, and a control means, etc., each other works well in cooperation, and the feeding roller is rotated precisely to make it long. It is possible to prevent occurrence of misfeed or loss of the tube-like tube.
[0047]
Furthermore, a stretch label having a flat inner diameter slightly smaller than the outer diameter of the container can of course be applied to a shrink label having a flat inner diameter slightly larger than the outer diameter of the container.
[Brief description of the drawings]
FIG. 1 is an explanatory view conceptually showing each step by applying a regular cutting device of the present invention to a stretch label.
FIG. 2 is a schematic front view showing a regular cutting device of the present invention.
FIG. 3 is a front view showing a long tube and a cylindrical label of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Support apparatus 2 ... Opening apparatus 3 ... Label mounting apparatus 4 ... Elevating / lowering apparatus 21 ... Auxiliary opening apparatus 22 ... Feed roller 23 ... Feeding roller 24 ... Cutting apparatus 25 ... Suction apparatus 211 ... Mandrel 212 ... Small auxiliary roller 213 ... Separator 231 ... Motor 232 ... Controller 233 ... Encoder 234 ... Converter 235 ... Sequencer 241 ... Cutter 241 ... Optical sensor 251 ... Suction cup 31 ... Label locking claw T ... Long tube L ... Cylindrical label B ... Container

Claims (1)

An opening device for helping to separate the inner surface of a flat elongated tube having folds on both side edges;
A feeding roller that is disposed downstream of the opening device and intermittently feeds the long tubes spaced apart;
An optical sensor that is disposed on the downstream side of the feeding roller and detects a detection mark indicating a cutting position of the long tube;
Is disposed downstream of the light sensor, the elongated tube for a given length of the pre-Symbol elongate tube comprising a cutter that moves back and forth in a direction intersecting the traveling direction of traveling from the opening device A cutting device for cutting into a cylindrical label ;
With rotating the feeding roller based on a signal from the light sensor receives a pulse signal generated from the encoder which is attached to the feeding roller, the tubular label to a length of the cutting position from the detection mark Control means for controlling the amount of rotation of the feeding roller with the pulse signal until the pulse signal matches a reference pulse signal set in advance to match a desired length ;
A packaging device comprising: a suction device that is positioned on the downstream side of the cutter in accordance with the length of the cylindrical label to be cut and sucks the cylindrical label portion of the long tube at the time of cutting . Standard cutting device for cylindrical labels.

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