JP2008213948A - Belt-like sheet feeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a belt-like sheet feeder capable of reliably detecting that a belt-like sheet S is pulled out to a terminating end Sa. <P>SOLUTION: A supporting means 3 for supporting a sheet roll SR comprises a pedestal disk 16 and a column 6 mounted on its center upper surface. The column 6 is composed of a top plate 17, a bottom plate 18 and three stays 21 for connecting them, and spaces 22 are formed between the adjacent stays 21. Further, a sensor 25 and a reflecting mirror 26 of a terminating end detector 13 are arranged across the column 6. When the belt-like sheet S is drawn out of the column 6 of the supporting means 3, the inspection light L1 from the sensor 25 is incident on the reflecting mirror 26 via the spaces 22, and the reflected light reflected thereby is detected by the sensor 25. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a belt-like sheet supply device, and more particularly to a belt-like sheet supply device provided with a detection device that detects that a belt-like sheet wound in a roll shape is pulled out to the end.

Conventionally, a labeler in which a supplied belt-like sheet is cut into a predetermined length and then attached to a container is known, and a belt-like sheet wound in a roll shape is sent out toward such a labeler. A supply device is also known (for example, Patent Document 1).
In the apparatus of Patent Document 1, the sheet roll SR obtained by winding the belt-like sheet S in a roll shape is mounted on each of the reels R that can be stacked in a multi-stage while being prevented from rotating with each other. Each sheet roll SR is sequentially connected such that the winding start portion of the belt-like sheet S in the upper sheet roll SR is connected to the winding end portion of the belt-like sheet S in the adjacent lower sheet roll SR. The belt-like sheet S can be continuously sent out between the sheet rolls SR stacked on the sheet.
Then, the remaining amount of the belt-like sheet in each stage of the sheet roll is detected by an ultrasonic sensor, and when the outer diameter of the sheet roll currently being consumed becomes a predetermined amount or less, it is confirmed that the belt-like sheet has been consumed near the end. I try to detect it.
Conventionally, for example, Patent Document 2 is known as a feeding device for a belt-like sheet wound in a roll shape.
In the apparatus of this patent document 2, a web roll wound around a core (paper tube) in a state where a printed tube-like label on which individual labels are printed at a predetermined interval is flattened into a web-like shape is used as a dedicated base. A web that is being fed, fitted to a disk, supplied to the web white motion joining device together with the base disc, unwound from the roll, cut into labels, and supplied to the automatic fitting device. The sensor detects that the roll has been fed to the web end, and automatically feeds the web from the web roll fitted to the next pedestal disk and automatically joins it to the rear end of the previous web. Yes.
JP 2002-326746 A Japanese Patent Laying-Open No. 2005-145708

In Patent Document 1, the outer diameter of the sheet roll is detected by radiating ultrasonic waves toward the sheet roll. However, the detection by the ultrasonic sensor indicates that the belt-like sheet has been consumed to the end. There was a drawback that it was difficult to detect reliably.
On the other hand, in the above-mentioned Patent Document 2, a detailed description of the sensor configuration is not described. It is a sensor that can detect the edge of the web wound around the paper tube, so it seems to be a color sensor that distinguishes the color of the paper tube and the web. In the case of a color sensor, the paper tube is the same as or similar to the web. In the case of different colors, it is difficult to reliably detect that the web has been fed to the end.

In view of the circumstances described above, the present invention provides a supply station to which a support means for supporting a belt-like sheet wound in a roll shape is supplied, and the belt-like sheet is drawn to the end when the belt-like sheet of this supply station is drawn out. A belt-like sheet supply device including a detection device for detecting the detection by inspection light,
The support means includes a pedestal disk that supports the belt-like sheet, and a gap that is erected at the center of the pedestal disk and penetrates the center of the belt-like sheet wound in a roll and allows inspection light to pass therethrough. With a supported strut,
The detection device includes a belt-like sheet end detection unit having a light projecting unit that irradiates inspection light toward the gap between the columns and a light receiving unit that receives the inspection light emitted from the light projecting unit,
When the inspection light is irradiated from the light projecting portion toward the gap between the columns and the light receiving portion receives the inspection light, it is detected that the belt-like sheet has been sent to the end.

  According to the configuration described above, it is possible to reliably detect that the belt-like sheet wound in a roll shape has been pulled out to the end.

Hereinafter, the present invention will be described with reference to the illustrated embodiments. In FIGS. 1 to 3, reference numeral 1 denotes a belt-like sheet supply device that draws and feeds the belt-like sheet S from a sheet roll SR in which the belt-like sheet S is wound around a labeler (not shown). The belt-like sheet supply apparatus 1 includes a fixed frame 2 having a three-dimensional frame shape, and also includes supply stations A and B that protrude from the left and right sides thereof.
The belt-like sheet S is made of a synthetic resin in which printed portions and transparent portions that do not transmit light are alternately arranged, and is originally a thin tube shape, but is flattened and rolled into a roll shape. From above, the sheet roll SR is supported by the support means 3.
The support means 3 for supporting the sheet roll SR is composed of a pedestal disk 16 and a column 6 attached to the upper surface of the central portion thereof. The sheet roll SR is supported on the support means 3 in a multistage manner on the carriage 4. The carriage 4 on which the sheet rolls SR stacked in multiple stages are placed is supplied to the supply stations A and B.
The belt-like sheet S of each sheet roll SR on the carriage 4 is similar to the above-described Patent Document 1 in that the end of the belt-like sheet S in the upper sheet roll SR at the upper and lower positions and the tip of the belt-like sheet S in the lower sheet roll SR. Are connected in advance.
As will be described in detail later, the support means 3 that supports each sheet roll SR is stacked on the carriage 4 so that their axial centers coincide with each other in the vertical direction. Thus, the support means 3 in the stacked state can rotate integrally in a predetermined direction in conjunction with the motor 5 provided at the upper part of the fixed frame 2 in each station A and B.

  The motors 5 and 5 are attached to the upper portions of the fixed frames 2 in the stations A and B in order to rotate the plurality of support means 3 and the sheet roll SR on each carriage 4. When the carriage 4 is supplied to each of the stations A and B, the carriage 4 as a whole is lifted by a predetermined amount by a lifting mechanism (not shown), thereby engaging pins 5B connected to the drive shaft 5A of the motor 5 described above. Engages with the support column 6 of the uppermost support means 3 (see FIG. 3). When the feed roller 8 of the feeding mechanism 7 described later is rotated by the control device 11, one of the motors 5 at both stations A and B is driven to rotate in synchronization with the feed roller 8 by the control device 11. It has become. As a result, the plurality of stages of supporting means 3 on the carriage 4 and the sheet rolls SR supported thereby are rotated in the same direction by the motor 5 and are fed from the sheet roll SR on the uppermost supporting means 3 by the feed roller 8. The sheet S is pulled out.

  The belt-like sheet supply device 1 includes a connection device 12 that connects two belt-like sheets S that are arranged in the upper part of the center of the fixed frame 2, the stations A and B, the connection device 12, and a labeler (not shown). And a feeding mechanism 7 disposed over a required position in the fixed frame 2 between and the control device 11 for controlling the operation of the connecting device 12, the feeding mechanism 7 and other driving systems. Further, the belt-like sheet supply device 1 includes end detection devices 13 for detecting that the belt-like sheet S is pulled out to the terminal Sa at the lower end of the fixed frame 2 in each of the stations A and B.

The feeding mechanism 7 according to the present embodiment is provided at the required position of the motor 5, 5 provided on the fixed frame 2 in each station A, B and the upper portion of the fixed frame 2 that is adjacent to each station A, B. A plurality of engaging rollers 14 and 14 ′, the feed roller 8 disposed below the central portion of the connecting device 12 that is the center of the fixed frame 2, and a required position from above the central portion of the fixed frame 2 to a position close to the labeler. And a plurality of engagement rollers 15 arranged at the locations.
In this embodiment, first, the belt-like sheet S is pulled out from the sheet roll SR in one supply station A. Therefore, the front end of the belt-like sheet S and the subsequent portion thereof are drawn out from the uppermost support means 3 in one supply station A by the operator in the field in advance and then passed over the plurality of engaging rollers 14. Is passed over the feed roller 8 and the plurality of engagement rollers 15, and the leading end of the belt-like sheet S is connected to a labeler (not shown). Further, the leading edge Sb of the belt-like sheet S of the uppermost support means 3 in the supply station B and its subsequent portion are also drawn out by the operator in advance and then passed over the plurality of engagement rollers 14 ′. The tip Sb is held by the connecting device 12.
When a labeler (not shown) is actuated, the control device 11 rotates the feed roller 8 of the feeding mechanism 7 and the motor 5 on the supply station A side in synchronization with the direction in which the belt-like sheet S is pulled out. As a result, the belt-like sheet S is continuously pulled out from the sheet roll SR supported by the uppermost support means 3 in the supply station A via the plurality of engagement rollers 14, and then passes through the connection device 12. Then, after the pulling direction is changed by the plurality of engagement rollers 15, it is sent out horizontally to a labeler (not shown).
Thus, when the belt-like sheet S is pulled out from the sheet roll SR on the support means 3 of the supply station A, the support means 3 of the other supply station B remains stopped. As described above, the belt-like sheet S of the sheet roll SR on the support means 3 has the leading end Sb held by the connecting device 12.

Then, when all the belt-like sheets S are pulled out from the sheet roll SR supported by the uppermost support means 3 in the supply station A by the feeding mechanism 7, it is supported by the second-stage support means 3 connected to the end thereof. The strip sheet S of the sheet roll SR is pulled out, and the strip sheet S is pulled out from the sheet roll SR supported by the third-stage support means 3. In this way, the belt-like sheet S of the sheet roll SR that is sequentially supported by the lower support means 3 is pulled out by the feeding mechanism 7. The end Sa of the belt-like sheet S of the sheet roll SR supported by the lowermost support means 3 is fixed to the column 6 of the support means 3, and in this embodiment, the lowermost belt-like sheet S is the end. The end detection device 13 detects that the material has been pulled out to Sa.
When the end detection device 13 detects that the belt-like sheet S has been pulled out to the end Sa and transmits a detection signal to the control device 11, the control device 11 operates the connection device 12. Then, the connecting device 12 cuts the belt-like sheet S drawn from the last sheet roll SR on the supply station A side that is currently being consumed at the location of the connecting device 12 and holds the front side of the cutting location and so far. The leading end Sb of the belt-like sheet S on the other supply station B side is connected.
In this way, the old and new belt-like sheets S are connected by the connecting device 12 while the belt-like sheet S is continuously pulled out by the feeding mechanism 7 and sent to the labeler. Since the configuration of the connection device 12 is known from the above-mentioned Patent Document 2, the detailed description of the configuration is omitted.

Therefore, in this embodiment, the sheet roll SR on the lowermost support means 3 in both stations A and B is pulled out to the end Sa by improving the support means 3 and the end detection device 13 as follows. This is so that it can be reliably detected.
That is, as shown in FIGS. 4 to 6, the support means 3 is a disc-shaped pedestal disk 16 having a through hole 16 </ b> A formed in the central part, and a schematic attached to the central part of the upper surface of the pedestal disk 16. A cylindrical frame-shaped support column 6 is provided.
The belt-like sheet S is rolled up to form a donut-shaped sheet roll SR, and the entire lower surface (one side) of the sheet roll SR is supported by the pedestal disk 16 and is inserted into the hole of the doughnut-shaped sheet roll SR. The support column 6 is vertically penetrated.
The support column 6 includes a pair of upper and lower top plates 17 and a bottom plate 18 having an annular shape, and three stays 21 that connect them in a mutually parallel state. The three stays 21 are arranged every 120 ° in the circumferential direction of the top plate 17 and the bottom plate 18 and connect both members so as to be parallel to each other. Three large gaps 22 penetrating in the radial direction are formed.
The top plate 17 and the bottom plate 18 are provided with positioning through holes 23 at intermediate positions between the stays 21 adjacent in the circumferential direction. Thereby, the stay 21 is positioned every 120 degrees in the circumferential direction of the top plate 17 and the bottom plate 18, and the positioning through hole 23 is positioned at an intermediate position therebetween. The lower end portion of each stay 21 protrudes below the bottom plate 18 by a predetermined dimension, and the protruding portion serves as a positioning portion 24.

The pedestal disk 16 is also provided with positioning engagement holes 16B every 120 ° in the circumferential direction surrounding the central through hole 16A.
When the support 6 is mounted on the pedestal disk 16, the positioning portion 24 that is the lowermost end of each stay 21 is fitted into the engagement hole 16 </ b> B of the pedestal disk 16. As a result, the support column 6 is attached to the upper surface of the central portion of the pedestal disk 16, and the axis of the pedestal disk 16 and the axis of the support column 6 coincide.
The stay 21 of the support column 6 in the support means 3 configured as described above is passed through the central hole of the sheet roll SR, and the entire lower surface of the sheet roll SR is supported from below by the pedestal disk 16.
In the present embodiment, the sheet roll SR supported by the support means 3 which is the lowermost stage when being placed on the carriage 4 has the end Sa of the belt-like sheet S adhered to one stay 21 with a cello tape (registered trademark). I am doing so. Note that a clamp mechanism may be provided on the stay 21 so as to grip the end Sa.
For the sheet roll SR supported by the other support means 3 on the upper side when placed on the carriage 4, the winding start (end) of the sheet roll SR is not connected to the column 6, but the upper surface of the pedestal disk 16 is raised. After that, it jumps out to the outside.

Then, as described above, the plurality of support means 3 supporting the sheet roll SR fit the three positioning portions 24 in the upper support means 3 into the through holes 23 of the top plate 17 of the lower support means 3. And the upper pedestal disk 16 is placed on the lower top plate 17 so that the axes of all of the support means 3 are aligned (see FIGS. 3 and 4). . In the stacked state, the operator at the site connects the upper end of the upper belt-like sheet S and the lower end of the lower belt-like sheet S in the sheet roll SR of the support means 3 in the vertical position. The plurality of support means 3 in this stacked state are placed on the carriage 4 with the lower surface center portion of the lowermost pedestal disk 16 supported on the bearing member 4A provided on the upper surface of the carriage 4 (FIG. 3).
Then, the carriage 4 on which the plurality of support means 3 and the sheet rolls SR placed in this way are supplied to the supply stations A and B by the operator. When the carriages 4 are supplied to the supply stations A and B, the entire carriage 4 is lifted by a lifting mechanism (not shown), so that the through holes of the top plate 17 in the support means 3 positioned at the uppermost stage in the stations A and B 23, the engaging pin 5B on the motor 5 side is engaged.
Thereafter, the operator pulls out the leading end of the belt-like sheet S and the subsequent portion thereof from the sheet roll SR on the uppermost support means 3 on the supply station A side, and the plurality of engaging rollers 14 of the feeding mechanism 7 as described above. The belt is stretched between the feed roller 8 and the engagement roller 15. The required amount of the belt-like sheet S is pulled out from the sheet roll SR on the uppermost support means 3 in the other supply station B, and the leading end Sb is held by the connecting device 12.

In this way, each carriage 4 in which the plurality of support means 3 and the sheet roll SR are stacked is supplied to both stations A and B, and the end detection device 13 is disposed below the fixed frame 2 in each station A and B. (See FIGS. 3 and 5 to 8).
The end detection device 13 of the present embodiment projects a light that irradiates the inspection light L1 toward the axis of the support column 6 of the support means 3 and a sensor 25 that can receive reflected light from a reflecting mirror 26, which will be described later. The reflecting mirror 26 reflects the inspection light L1 emitted from the sensor 25. The sensor 25 and the reflecting mirror 26 are arranged at the lower part of the fixed frame 2 and are maintained at the same height as the support column 6 of the support means 3 located at the lowest stage in each station A, B. The sensors 25 and the reflecting mirrors 26 are arranged so as to face one side and the other side across the axis of the support means 3 on the carriage 4 in each station A and B.
In the present embodiment, the inspection light L is always emitted from the sensor 25 toward the axis (support 6) of the lowermost support means 3 on the carriage 4.
As shown in FIGS. 5 and 7, the inspection light L <b> 1 emitted from the sensor 25 is emitted from the support 6 in a state where the belt-like sheet S is slightly pulled out from the sheet roll SR on the support means 3 at the lowest position. Is shielded by the sheet roll SR surrounding and cannot reach the reflecting mirror 26.
In the present embodiment, the sensor 25 serves as both a light projecting unit and a light receiving unit, so that the reflected light cannot be received in the state shown in FIG. 7 where the inspection light L1 does not reach the reflecting mirror 26. The sensor 25 can be inspected even by a transparent body, and can detect even if the belt-like sheet S is transparent. As described above, in the state where the sheet roll SR for one round or more remains on the support column 6 of the lowermost support means 3, a detection signal from the sensor 25 cannot be obtained.

On the other hand, as shown in FIGS. 6 and 8, when most of the belt-like sheet S is consumed from the sheet roll SR on the lowermost support means 3, the three stays 21 are drawn from the column 6 to the end Sa. Are exposed, and the three gaps 22 are also exposed. In this state, the inspection light L1 from the sensor 25 passes through the axial center of the support means 3 (support 6) through the gap 22, reaches the reflecting mirror 26 at the opposite position, and is reflected by the reflecting mirror 26. The reflected light is received by the sensor 25. That is, when the belt-like sheet S is pulled out to the end Sa, the end detector 13 can reliably detect that the belt-like sheet S has been pulled out to the end Sa.
When the sensor 25 receives the reflected light from the reflecting mirror 26, the sensor 25 transmits the received light to the control device 11 as a detection signal.
Then, as described above, the control device 11 connects the strip sheet S of the supply station A currently consumed and the leading end Sb of the strip sheet S on the other supply station B side by the connecting device 12. .

As described above, in this embodiment, the column 6 of the support means 3 has the three stays 21, the top plate 17 and the bottom plate 18 connected by them, and a gap 22 is provided at a position adjacent to the stay 21. Is formed. Then, the inspection light L is irradiated from the sensor 25 of the end detection device 13 toward the axis of the lowermost support means 3 (support 6) of each supply station A, B.
When the belt-like sheet S is consumed from the sheet roll SR on the support means 3 to the terminal Sa, the inspection light L1 is reflected by the reflecting mirror 26 and the reflected light is detected, so that the belt-like sheet S reaches the terminal Sa. It is possible to reliably detect that it has been pulled out. Thereby, it is possible to prevent a portion near the end Sa of the belt-like sheet S from remaining unnecessarily on the support column 6 of the support means 3.
In this embodiment, since the support 6 is detachably attached to the base disk 16, when the width of the belt-like sheet S to be processed is changed, it is replaced with a support 6 that matches the belt-like sheet S. Therefore, the pedestal disk 16 can be used in the same manner, and the storage space for the attachment can be reduced.
In the above embodiment, the sensor 25 of the end detection device 13 serves as both the light projecting means and the light receiving means. However, the light projecting means is provided on one side of the support means 3 and the light receiving means is provided on the other side. When the belt-like sheet S is pulled out from the sheet roll SR to the end Sa, the inspection light L1 from the light projecting means may be received by the light receiving means, and a detection signal may be sent from the light receiving means to the control device.

The top view which shows one Example of this invention. The front view of FIG. The right view of the principal part of FIG. The expanded sectional view of the principal part in alignment with the IV-IV line of FIG. The perspective view which shows the state which supported the sheet roll SR wound by roll shape on the support means 3 shown in FIG. FIG. 6 is a perspective view showing a state in which all the belt-like sheets S are pulled out from the sheet roll SR on the support means 3 shown in FIG. 5. The top view which shows the relationship between the support means 3 and the terminal detection apparatus 13 when only the strip | belt-shaped sheet | seat S is consumed from the sheet | seat SR on the lowermost support means 3 in the supply station A of FIG. The top view which shows the relationship between the support means 3 and the terminal detection apparatus 13 when the strip | belt-shaped sheet | seat S is withdraw | derived from the sheet roll SR on the lowermost support means 3 in the supply station A of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Band-shaped sheet supply apparatus 3 ... Support means 6 ... Support | pillar 13 ... End | end detection apparatus 16 ... Base disk 22 ... Gap 25 ... Sensor (terminal detection means) 26 ... Reflector S ... Band-shaped sheet Sa ... Terminal L1 of the band-shaped sheet S ... Inspection light

Claims (3)

A supply station to which a supporting means for supporting the belt-like sheet wound in a roll is supplied, and when the belt-like sheet of this supply station is pulled out, detection that detects that the belt-like sheet has been pulled out to the end by inspection light An apparatus for supplying a belt-like sheet comprising:
The support means includes a pedestal disk that supports the belt-like sheet, and a gap that is erected at the center of the pedestal disk and penetrates the center of the belt-like sheet wound in a roll and allows inspection light to pass therethrough. With a supported strut,
The detection device includes a belt-like sheet end detection unit having a light projecting unit that irradiates inspection light toward the gap between the columns and a light receiving unit that receives the inspection light emitted from the light projecting unit,
A belt-shaped sheet supply device that detects that the belt-shaped sheet is sent to the end when the light receiving unit receives the inspection light by irradiating the light from the light projecting unit toward the gap between the columns. .   The column is composed of a top plate, a bottom plate, and a stay for connecting them, and a positioning pin that protrudes downward is provided on the bottom plate, and the positioning pin is engaged with a positioning hole formed in the base disk. The strip-shaped sheet feeding device according to claim 1, wherein the support unit and the pedestal disk are integrated by including.   Positioning holes formed in the pedestal disk and the lower support column when the positioning pins that can engage the positioning pins are formed in the top plate and the support means are stacked in multiple stages. The apparatus for feeding a belt-like sheet according to claim 2, wherein positioning is performed by penetrating through the sheet.

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