JPH0812143A - Paper tube supply device - Google Patents

Abstract

PURPOSE:To supply a paper tube having a notch in one end part in the correct direction to the winding part side. CONSTITUTION:A paper tube 2 having a notch in one end part is introduced onto a receiving stand 122 fixed on an endless link 121 by an introducing rotary plate 125. When the paper tube 2 comes under a notch detecting device 127 by a movement of the endless link 121, the endless link 121 stops, and the paper tube 2 is raised up to the notch detecting device 127 by an air cylinder 126. The existence of a notch of the paper tube 2 and the direction of the paper tube 2 are detected by the notch detecting device 127, and afterwards, the paper tube 2 is returned onto the receiving stand 122. The paper tube 2 reaches under a gripping reversing device 123 by the endless link 121. When the direction of the paper tube 2 is correct, the gripping reversing device 123 grips the paper tube 2 according to a signal of the notch detecting device 127, and transfers it up to a discharge device 129 still in that direction, and when the direction of the paper tube 2 is inverse, the paper tube 2 is gripped, and is rotated by 180 deg. in the horizontal direction, and is transferred to the discharge device 129.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper tube feeding device for feeding a paper tube as a core to a winding section for winding a thermal transfer recording sheet used in a thermal facsimile machine or the like.

[0002]

2. Description of the Related Art Conventionally, a roll type thermal transfer recording sheet has been used in a facsimile machine. This recording sheet is also called a donor, and is a thin plastic film substrate such as polyester having a hot-melt ink layer comprising a binder such as wax or resin and a coloring agent on one surface thereof. Printing is performed by superposing the ink layer of the recording sheet on the paper, heating the recording sheet from the back side with a heating means such as a thermal head, and transferring the ink to the paper. Such a facsimile device is provided with a device for displaying the end of the recording sheet.

In order to indicate the end of the recording sheet, an end mark having a reflecting surface is generally provided near the fixed end (end end) of the paper core (core) of the recording sheet. This end mark is provided on either the hotment ink layer side or the opposite side of the recording sheet, and is optically detected by a sensor having a light source and a photodetector.

Such end marks are provided by printing on a wide web, and the printed web is then slit in the longitudinal direction to form a plurality of recording sheets, which are wound around the paper tube at the winding section. Taken.

[0005]

The recording sheet on which the end mark is printed as described above is wound around the paper tube in the winding section, and the paper tube is provided with a notch at one end thereof. . The notch engages with a protrusion of the facsimile apparatus main body and is used for mounting the roll-shaped recording sheet at a predetermined position with respect to the facsimile apparatus main body.

By the way, in order to wind the recording sheet in the winding section, a paper tube is supplied to the winding section. In this case,
Whether or not a notch is formed on the predetermined one end side of the paper tube is visually determined, and when it is formed on the other end, the orientation of the paper tube is changed. In such a case, if it is possible to detect whether or not a cutout is formed on the predetermined one end side of the paper tube during the supply of the paper tube and then correct the orientation of the paper tube, the roll recording sheet product can be quickly produced. It is convenient because it can improve accuracy.

The present invention has been made in consideration of such a point, and after detecting whether or not a notch is formed at a predetermined position of the paper tube, the orientation of the paper tube is corrected and the take-up portion is corrected. It is an object of the present invention to provide a paper tube supply device that can supply the paper core.

[0008]

SUMMARY OF THE INVENTION The present invention provides a paper tube supply device for supplying the paper tube to a winding unit that winds a sheet in a roll around a paper tube having a notch at one end. In, a transfer device for sequentially transferring the paper tube in the horizontal direction,
An introducing device that is connected to the inlet side of the transfer device and that introduces the paper tube into the transfer device, an ejecting device that ejects the paper tube to the take-up portion side, a cutout of the paper tube, and a direction of the paper tube. Based on the signal from the notch detecting device and the notch detecting device to detect the, when the notch is formed and the orientation of the paper tube is correct, the paper tube on the transfer device is grasped and the discharging device in the same orientation. And a notch is formed and the orientation of the paper tube is reversed, a gripping and reversing device that grips the paper tube on the transfer device, rotates the paper tube approximately 180 ° in the horizontal direction, and transfers the paper tube to the discharge device. A paper tube supply device characterized by being provided.

[0009]

The paper tube having a notch at one end is introduced from the introducing device to the transfer device and sequentially transferred in the horizontal direction on the transfer device. When the paper tube reaches below the notch detecting device, the transfer device stops, and the notch detecting device detects the presence or absence of the paper tube notch and the orientation of the paper tube. Next, the paper tube is transferred on the transfer apparatus, and when the paper tube reaches below the gripping and reversing apparatus, the transfer apparatus stops. The grip reversing device, based on the signal from the notch detection device, when the notch is formed in the paper tube and the orientation is correct,
Grasp the paper tube and transfer it in the same direction to the discharge device,
When the notch is formed and the direction is reversed, the paper tube is gripped, horizontally rotated by about 180 ° and transferred to the discharge device.

[0010]

EXAMPLES First, a thermal transfer recording sheet will be described with reference to FIG. As shown in FIG. 1, a notch 110 is formed at one end.
The thermal transfer recording sheet 1 fed out from the paper tube (core) 2 having is pulled in the direction of arrow A, and a small sheet remains on the paper tube 2 side. A notch 110 provided at one end of the paper tube 2 engages with a protrusion of the facsimile apparatus main body and mounts the roll-shaped recording sheet 1 at a predetermined position on the facsimile apparatus main body.

As shown in FIG. 2, which is a sectional view taken along line II-II of FIG. 1, a recording sheet 1 is provided with a base film 1a and a copy to be processed by thermal transfer provided on one surface of the base film 1a. It has a hot melt ink layer 1b for recording. Of these, the base film 1a is polyester,
It is made of plastic such as polypropylene, cellophane acetate, or polycarbonate, or paper such as condenser paper or paraffin paper. Of these, the polyester base film 1a is preferable. The hot melt ink layer 1b is composed of a mixture of known pigment, synthetic resin and wax. This hot melt ink layer has a thickness of 3 to 8 microns.

Further, as shown in FIGS. 1 and 2, an end mark 3 having a narrow width along the longitudinal direction is formed at a portion spaced from the end of the recording sheet 1 fixed to the paper tube 2 by a predetermined distance.
Is provided. Although the end mark 3 is provided on the base film 1a side, the hot melt ink layer 1b
It may be provided on the side.

The end mark 3 is 1 by gravure printing.
It is a light-reflecting layer having a thickness of ~ 6 microns. Therefore, the end mark is silver or gold,
It conceals the black base film or the hot melt ink layer and forms an effective reflecting surface.

The gravure printing ink used for forming the end mark 3 is as follows.

Gravure printing ink 1 Aluminum paste 13% "VA-HR430" (trade name) 87% Of these, VA-HR30 is vinylidene fluoride 8.7% fluorocarbon 6.5% methyl ethyl ketone 47.0% toluene 9. 6% “M-AT BC TF” (trade name) 21.7% “M-AT Mark FC113” (trade name) 6.5% Here, “M-AT BC TF” means 10% Teflon powder (Polytera). Fluoroethylene) (trade name) and 40%
Of acrylic polyol, 30% of methyl ethyl ketone, and 20% of additives. See also "M-AT Mar
k FC113 "consists of 30% graft polymer wax, 65% toluene and 5% ethyl acetate.

Gravure printing ink 2 Aluminum paste 8% Nitrocellulose 16.5% Ester gum 3.0% Wax 4.5% Castor oil 3.0% Dioctyl malate 3.0% Toluene 20.0% Isopropyl alcohol 14.0 % Ethyl alcohol 28.0% Gravure printing ink 3 Gravure printing ink 2 64.0% “CM950White” (trade name) 36.0% “CM950White” (trade name) is 24% aluminum oxide and 26.0% Contains varnish and 14.0% wax.

As shown in FIG. 3, the second end mark 3A may be provided farther from the fixed end of the paper tube 2 of the recording sheet 1 than the first end mark 3. The second end mark 3A is formed in a series of relatively short strips by gravure printing. This second end mark 3
A indicates that the end of the recording sheet 1 is approaching before the first end mark 3.

Next, the method of using the thermal transfer recording sheet 1 will be described with reference to FIG.
This will be described below. As shown in FIG. 4, the thermal transfer recording sheet 1 pulled from the supply roll 1R of the paper tube 2 moves the guide roll 4 in the arrow direction and enters between the thermal head 5 and the backup roll 6. Then thermal transfer recording sheet 1
Enters the other guide roll 7 and is wound by the winding shaft 8.

The paper 9 to be recorded is supplied from a paper supply tray (not shown) and placed on the recording sheet 1. When the paper 9 and the recording sheet 1 move while contacting each other between the thermal head 5 and the backup roll 6, the hot melt ink is thermally transferred onto the paper 9 by the heating of the thermal head, and recording is performed.

When the recording sheet 1 is pulled to the vicinity of the end of the paper tube 2, the reflective end mark 3 is shown as shown in FIG. As shown in FIG. 4, the end mark 3 reaches a position facing the infrared sensor including the light source 10 and the photodetector 11. The infrared light emitted from the light source 10 reaches the end mark 3 and is reflected thereby to reach the photodetector 11. In this way, the infrared sensor detects that the recording sheet 1 is finished. Alarm 12 is connected to photodetector 11 and end mark 3
To warn that the recording sheet 1 is approaching the end.

Next, the apparatus for manufacturing the above thermal transfer recording sheet will be described with reference to FIGS. As shown in FIG. 5, the manufacturing apparatus includes a web supply unit 14 and a gravure printing unit 1.
6, a slit portion 17, and a recording sheet winding portion 18, to which the paper tube feeding device 19 according to the present invention is connected.

Next, the outline of the apparatus for producing the thermal transfer recording sheet will be described. First, the web S supplied from the supply unit 14 becomes the recording sheet 1. The web S has a base film 1a and a coating 1b having a hot melt intein formed on one surface of the film, the end mark 3 is not formed yet, and the web S is the recording sheet 1 More than twice as wide. FIG. 5 shows a state in which the web is supported in the shape of a roll 20 on the roll support 21 of the web supply unit 14. In FIG.
The web S includes a series of guide rails 23,
It is guided by 24 and sent to the gravure printing unit 16.

In the gravure printing section 16, the end marks 3 are printed on each web S in, for example, four rows. FIG.
The second end mark 3A shown in may be printed by the gravure printing unit 16. End mark 3 to second end mark 3A
With or after printing only the end mark 3 without the second end mark 3A, the web S is sent to the slit portion 17, where the wide web S is slit in the longitudinal direction to form a plurality of narrow strip-shaped recording sheets. Is wound up as a roll 26 in the winding section 18.

The above-mentioned series of guide rolls 23, 24 and other rolls constitute a combination feeding means for continuously feeding the web. A known device can be used for the web supply unit 14.

Next, the paper tube feeding device 19 according to the present invention will be described with reference to FIGS. 5, 12, 13 and 14.

As shown in FIG. 5, the paper tube supply device 19 supplies the paper tube 2 having the notch 110 to the winding section 18. As shown in FIG. 12, the paper tube feeding device 19 includes an endless link 121 that is hung between a pair of pulleys 101 and 102 and moves in the direction of arrow L, and a pedestal 122 that is fixed to the endless link 121 and receives the paper tube 2. Is provided with a transfer device. An introduction rotary plate 125 for introducing the paper tube 2 into the receiving table 122 is arranged on the receiving table 122 located at the left end of the transfer device. The pulley 101 of the pair of pulleys 101 and 102 serves as a drive pulley.

A holding groove 125a for holding the paper tube 2 is provided on the outer periphery of the introducing rotary plate 125, and the holding groove 125a is provided.
By holding the paper tube 2 therein and rotating the introduction rotary plate 125, the paper tube 2 in the feeding portion 128 is introduced onto the pedestal 122 located at the left end of the transfer device. During the rotation of the introduction rotary plate 125, the paper tube 2 is held in the holding groove 125a by a holding plate (not shown).

Above the endless link 121, the paper tube 2
A notch detecting device 127 is provided to detect whether or not the notch 110 provided in the paper tube 2 is formed at a predetermined one end of the paper tube 2. Further, below the notch detecting device 127, an elevating air cylinder 126 is provided that lifts the paper tube 2 on the receiving table 122 to raise it to the notch detecting device 127 and then lowers it to the receiving table 122.

Further, on the downstream side of the notch detecting device 127 and above the endless link 121, a grip reversing device 123 for gripping the paper tube 2 on the receiving table 122 and transferring it to the discharging device 129 is provided. . This grip reversing device 1
When the notch 110 is formed at a predetermined one end of the paper tube 2 based on the signal from the notch detecting device 127 (when the notch 110 is formed and the orientation of the paper tube 2 is correct), the pedestal 23 is provided. When the upper paper tube 2 is grasped and transferred to the discharge device 129 in the same orientation and the notch 110 is formed at the other end of the paper tube 2 (when the notch 110 is formed and the orientation of the paper tube 2 is reversed). In the case of), after gripping the paper tube 2 on the receiving table 122, the paper tube 2 is rotated 180 ° in the horizontal direction and the discharging device 129 is rotated.
The paper tube 2 is transferred up to. Furthermore, when the cutout 110 is not formed in the paper tube 2, the gripping and reversing device 123 does not operate, which causes the paper tube 2 on the pedestal 122.
Is discarded to the discarding side 115 as the endless link 121 moves.

The paper tube 2 discharged to the discharging device 129 side is then transferred to the winding section 18 shown in FIG.

Next, details of the notch detecting device 127 are shown in FIG.
And FIG. 14 demonstrates. As shown in FIGS. 13 and 14, the notch detecting device 127 has an infrared projector 111 and an infrared receiver 112, which are provided on both ends of the paper tube 2, respectively. The infrared projector 111 and the infrared receiver 112 are provided.
The notch 110 is detected by the. Further, the infrared light receiver 112 is connected to an amplifier 113 having a comparator function, the analog signal from the infrared light receiver 112 is converted into a non-contact voltage output by the amplifier 113, and this non-contact voltage output is input to the control device 114. . The control device 114 includes a drive pulley 101, a grip reversing device 123, an introduction rotary plate 125, and an air cylinder 126.
Are controlled respectively.

Incidentally, in FIG. 13, the infrared projector 11
Although 1 and the infrared receiver 112 are shown only on one end side of the paper tube 2 for convenience, they are actually arranged on both end sides of the paper tube 2, respectively. Further, the paper tube 2 is rotatably supported by a pair of rollers (not shown) provided at the upper end of the air cylinder 126 shown in FIG. 12 in the notch detecting device 127, and at the same time, is moved downward by the drive roll 127a of the notch detecting device 127. It is pressed against and rotates.

Next, the operation of the paper tube feeder 19 according to the present invention will be described below.

First, as shown in FIG. 12, the paper tube 2 having the notch 110 sent to the sending portion 128 is fitted into the holding groove 125a formed on the outer periphery of the introducing rotary plate 125. Next, the introducing rotary plate 125 rotates clockwise, and the paper tube 2 fitted in the holding groove 125a is introduced on the left end pedestal 122 fixed to the endless link 121. During this time,
The endless ring 121 intermittently moves in the direction of arrow L by the drive pulley 101, and transfers the paper tube 2 on the pedestal 122 to the right in FIG.

The paper tube 2 on the receiving table 122 is the notch detecting device 12.
The endless link 121 stops at a position directly below 7. Next, lift the paper tube 2 by the air cylinder 126,
The notch detector 127 is moved up.

In the notch detecting device 127, the paper tube 2 is held and rotated by the above rotating mechanism. Meanwhile, the paper tube 2
Infrared light is projected from the infrared projector 111 to both ends of the. As shown in FIG. 14A, the cutout 1 is formed in the paper tube 2.
When 10 is formed, the infrared light projected from the infrared projector 111 is directly received by the infrared receiver 112 through the notch 110, and the analog signal from the infrared receiver 112 is converted into a connection voltage output by the amplifier 113. To be done. The contactless voltage output from the amplifier 113 is then input to the controller 114. Infrared receiver 112 during this period
Figure 14 shows the output from the
The output from the amplifier 113 is shown in FIG.
Shown in

As shown in FIGS. 14 (a), (b), and (c), the cutout 110 of the paper tube 2 is represented as the output of the amplifier 113, so that the cutout 110 of the paper tube 2 in the control unit 114. You can check the existence of. Further, as described above, the infrared projector 111 and the infrared receiver 112 are provided.
Are provided at both ends of the paper tube 2, so which side of the infrared light receiver 12 outputs the signal
The notch 110 is specified in 14 so that the paper tube 2
It is also possible to confirm on which side of the sheet, that is, the orientation of the paper tube 2.

Next, as shown in FIG. 12, the air cylinder 1
26 descends, the paper tube 2 is returned onto the pedestal 122, and the endless link 121 moves in the arrow L direction. Next, when the paper tube 2 on the receiving table 122 comes under the grip reversing device 123,
The endless link 121 stops, and the grip reversing device 123 descends to grip the paper tube 2 on the pedestal 122.

The grip reversing device 123 performs the following operation based on the signal from the control device 114. First, when the notch 110 is formed in the paper tube 2 and the orientation of the paper tube 2 is correct, the grip reversing device 123 descends and grips the paper tube 2 on the pedestal 122. After that, the grip reversing device 123 rises,
The paper tube 2 is transferred to the discharging device 129 in the same orientation. The paper tube 2 transferred to the discharge device 129 is then sent to the winding unit 18 shown in FIG.

On the other hand, when the notch 110 is formed in the paper tube 2 and the orientation of the paper tube 2 is reversed, the gripping and reversing device 123 descends and grips the paper tube 2 on the pedestal 122. After that, the gripping device 123 rises, rotates the paper tube 2 by 180 ° in the horizontal direction, and then transfers the paper tube 2 to the discharging device 129.

If the cutout 110 is not formed in the paper tube 2, the grip reversing device 123 does not operate and the endless link 1
21 moves in the direction of arrow L in FIG. Along with this, the paper tube 2 on the receiving table 122 is discarded as a defective product to the discarding side 115.

As described above, according to this embodiment, it is detected whether or not the notch 110 is formed at the predetermined one end of the paper tube 2, and the orientation of the paper tube 2 is reversed when the paper tube 2 is reversed. After correcting the above, the paper tube 2 can be supplied to the winding unit 18 side. Furthermore, when the cutout 110 is not formed in the paper tube 2, the paper tube 2 can be discarded to the outside of the system without being supplied to the winding unit 18.

Next, other components of the thermal transfer recording sheet manufacturing apparatus will be described. First, the gravure printing unit 16 and the slit unit 17 will be described below.

FIG. 6 shows the details of the gravure printing section 16.
As shown in FIG. 6, the gravure printing unit 16 has a frame 29 to which a gravure printing unit 30 is attached. The web S is supplied to the printing unit 30 via the guide roll 24 (see FIG. 5) and another guide roll 31. On the downstream side of the printing unit 30, the web S passes through the guide rolls 32, 33, 34, 35, and 36, and the printing unit 16
Get away from.

FIG. 7 is a more detailed view of the printing unit 30. As shown in FIG. 7, the printing unit 30 includes a plate cylinder 37.
, The impression cylinder 38, and the ink pan 3 located below the plate cylinder 37.
9 and 9. The ink pan 39 contains the gravure printing ink 40, and the plate cylinder 37 is partially immersed therein.

The plate cylinder 37 has a large number of gravure ink cells formed for printing desired end marks on the web S, and a pair of doctor blade mounting devices 42 are provided on both sides of the plate cylinder 37. There is. Each mounting device 42 supports a blade 41 for scraping off excess ink from the surface of the plate cylinder 37.

These doctor blade mounting devices 42
Each has a doctor blade adjustment knob 43,
The knob 43 adjusts the pressing force of the doctor blade 41 against the surface of the plate cylinder 37. Only one of the two doctor blades 41 is actually used for the printing operation.

As shown in FIG. 8, the impression cylinder 38 is firmly attached to a shaft, and both ends of the shaft are rotatably supported by a pair of bearing blocks 45. The bearing block 45 is vertically movable along each of the upright guide rolls 46. Therefore, the impression cylinder 38 itself is movable in the vertical direction with respect to the plate cylinder 37.

As shown in FIG. 7, a pair of air cylinders C1 are attached to a support 48 connecting a pair of guide rails 46 so as to cause a relatively long stroke of vertical displacement of the impression cylinder 38. A piston rod 50 extends downward from the air cylinder C1 and
0 is connected to the bearing block 45. Then, the air cylinder C1 is retracted when the plate cylinder 37 is converted, and the impression cylinder 38 is raised to the position indicated by reference numeral 38 'in FIG.

As shown in FIGS. 7 and 8, another pair of air cylinders C2 are mounted on the frame 2 at the upper end 52 thereof.
9 is swingably connected. The piston rod 53 of each air cylinder C2 is swingably connected to one end of a lever 55. Each lever 55 is swingably connected to the frame 29 about an intermediate point 56, and each lever 55 supports a roller 57 at the other end. The rollers 57 on the pair of levers 55 are engaged with the lower surface of each bearing block 45. Therefore, in FIG. 7, when the cylinder C2 is extended, the lever 55 is rotated clockwise, which raises the bearing block 45 and separates the impression cylinder 38 from the plate cylinder 37.

As in the known gravure printing machine, the web S passes through the guide roll 31, passes between the plate cylinder 37 and the impression cylinder 38, and goes from the lower side of the guide roll 32 to the downstream side.

As shown in FIG. 8, an appropriate driving mechanism M is connected to the plate cylinder 37 so as to apply a rotational driving force to the plate cylinder 37. In order to print on the web, not only the plate cylinder 37 is rotated to supply the web S to the printing unit 30, but also the impression cylinder 38 is lowered to move the web S between the impression cylinder 38 and the plate cylinder 37. Must be combined. For this reason,
The pair of air cylinders C2 are retracted to lower the impression cylinder 38, thereby placing the printing unit 30 in the desired operating condition.

As shown in FIG. 6, a drying device 60 is provided above the printing unit 30. The drying device 60 includes a fan 61 attached to the upper portion of the frame 29, an air heater 62 connected to the fan 61, and a fan 61.
And a duct 63 that circulates the air flow generated by the air heater 62 and that reaches the vicinity of the web.

The duct 63 extending from the air heater 62 returns to the fan 61 to circulate the heated air as described above. At the center of the flow path of the duct 63, four cylindrical outlet pipes 66 extending in the feed direction of the web S are provided. As described above, the outlet pipes 66 are provided by the number corresponding to the four rows of the end marks 3 printed on the web S, and heated air is blown onto the end marks 3 printed on the web S at the lower end of each outlet pipe 66. Grooves 65 for attachment are formed along the feeding direction of the web S. Further, a thermometer 72 is installed at the inlet side of the outlet pipe 66 or at a connecting portion between the duct 63 and the air heater 62, and the temperature controller 70 performs a constant temperature control operation of the air heater 62 based on a signal from the thermometer 72. Be seen.

Further, as shown in FIGS. 9 and 10A and 10B, the groove 65 of each outlet pipe 66 is covered with an elongated shutter 67 arranged in the outlet pipe 66 and extending in the longitudinal direction. ing. Each elongated shutter 67 is a pair of air cylinders C3 provided above each outlet pipe 66.
Moves up and down via the rod 72 to open and close the groove 65.

A circular baffle plate 68 for blocking the flow path in the outlet pipe 66 is provided in each of the outlet pipes 66 and downstream of the groove 65. The circular baffle plate 68 is provided in the air flow direction. It rotates around a rotation axis 68a that is orthogonal to the axis. The rotary shaft 68a is rotated by a drive mechanism C4 which operates in synchronization with the air cylinder C3.

That is, at normal times, the shutter 67 is lowered by the air cylinder C3 to close the groove 65, and the baffle plate 68 is kept horizontal in the outlet pipe 66 by the drive mechanism C4. Next, when the end mark 3 printed on the web S reaches below the groove 65, the air cylinder C3
This causes the shutter 67 to rise and open the groove 65. At the same time, the baffle plate 68 is rotated by the drive mechanism C4 about the rotary shaft 68 to the vertical position in the outlet pipe 66, thereby obstructing the flow of the heated air.

In this way, almost all the heated air in the outlet pipe 66 can be blown from the groove 65 to the end mark 3 of the web S, whereby the end mark 3 can be efficiently dried. . Further, normally, the groove 65 is closed by the shutter 67 and the baffle plate 68 is maintained in the horizontal direction, so that the heated air is blown into the duct 63.
It can be circulated within. In this case, the air heater 6
Since the temperature of No. 2 is controlled to be constant by the temperature controller 70 based on the signal from the thermometer 71, the temperature in the outlet pipe 66 can be maintained substantially constant, and when the groove 65 is opened, the temperature is promptly increased. It is possible to blow heated air having a constant temperature onto the end mark 3.

After the end mark is printed on the web S in the printing section 16 and then dried, the web S is guided to the slit section 17 by the guide roll 75. The slit portion 17 is a known device, and the web S advances from the guide roll 75 toward the additional guide rolls 76, 76,
After that, head for the master roll 78. Next, as shown in FIG. 11, the web S passes through the guide roll 79 and faces the pair of slit rolls 80a and 80b. One slit roll 80a rotates around a fixed axis, and the other slit roll 80b is rotatably mounted on a movable arm 81. The fixed shaft slit roll 80a has, for example, a known annular slit blade, and the web S
The strip-shaped recording sheet 1 obtained by slitting the sheet is provided with two separating rolls 8 from the slit portion 17.
The recording sheet winding unit 18 passes through either 3a or 83b.
It is wound in the form of a roll 26 around the paper tube 2 supplied to the.

As shown in FIGS. 5 and 11, in the vicinity of the master roll 78, a rotation speed detection circuit 90 for detecting the rotation of the master roll and the length of the supply web S resulting therefrom is provided. The rotation speed detection circuit 90 is adapted to calculate a pulse corresponding to the rotation speed of the master roll 78. When the pulse corresponds to the start of end mark printing and reaches a predetermined numerical value indicating the desired position of the web S, the pair of air cylinders C2 retracts,
As a result, the impression cylinder 38 that had been separated from the plate cylinder 37 until then
Descends. In this way, the web S is narrowed between the plate cylinder 37 and the impression cylinder 38, and printing of the end mark is started.

The rotation speed detection circuit 90 can also confirm that the four rows of the end marks 3 printed on the web S reach the drying device 60, whereby the air cylinder C3 contracts to raise the shutter 67, and the outlet pipe 66. The heated air can be sprayed onto the end mark 3 from the groove 65 of the. At the same time, the drive mechanism C4 causes the baffle plate 68 to rotate to the vertical position and obstruct the flow path in the outlet pipe 66, so that almost all the heated air in the outlet pipe 66 can be blown to the end mark 3.

Next, when the four rows of end marks 3 pass through the groove 65, the air cylinder C3 lowers the shutter 67 to close the groove 65 under the control of the rotation speed detection circuit 90, and the baffle plate 68 is driven by the drive mechanism C4. Rotates to the horizontal position.

As shown in FIG. 10B, the tip of the end mark 3 in each row has the tip of the outlet groove 65 on the upstream side of the outlet groove 65.
The groove 65 is opened by the shutter 67 at a point of a predetermined distance X on the upstream side of 5. Further, when the rear end of the end mark reaches the point of the predetermined distance Y on the downstream side of the exit groove 65, the groove 65 is closed by the shutter 67. The opening / closing operation of these shutters 67 is performed by the rotation speed detection circuit 90.
It is performed under the control of.

Thus, in the gravure printing section 16,
The four rows of end marks 3 are printed at predetermined positions on each web S by the printing unit 30, and then only the end marks 3 do not adversely affect other web parts.
0 to dry. Next, in the slit portion 17, each portion of the printed web is slit in the longitudinal direction to form a plurality of, for example, four thermal transfer recording sheets 1 having a desired width. Each of these recording sheets 1 is a paper tube 2
Is wound on a roll 26 around the outer periphery of the.

As shown in FIG. 2, the end mark 3
May be provided on one surface of the base film 1a or on one surface of the hot melt ink layer 1b provided on the other surface of the base film 1a. End mark 3 with web S
The surface to be formed is determined by whether the web passes through the passage indicated by the solid line in FIG. 6 or the passage indicated by the phantom line. When passing through the passage of the virtual line,
The web S passes through the additional guide rolls 92, 93, 94 and the guide roll 32, between the plate cylinder 37 and the impression cylinder 38, and then the guide roll 31.

[0066]

As described above, according to the present invention, the presence or absence of a notch and the orientation of the paper tube can be detected by the notch detection device, and the orientation of the paper tube is corrected when the orientation of the paper tube is reversed. After that, it can be supplied to the winding section side. Therefore, by winding the recording sheet around the paper tube having the cutout at the predetermined one end, the product accuracy of the roll-shaped recording sheet can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing a thermal transfer recording sheet having end marks.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a view similar to FIG. 1 showing another thermal transfer recording sheet.

FIG. 4 is a schematic diagram showing a state in which an end mark provided on a thermal transfer recording sheet is optically detected.

FIG. 5 is a schematic view of a thermal transfer recording sheet manufacturing apparatus.

6 is an enlarged view of a gravure printing section of the thermal transfer recording sheet manufacturing apparatus shown in FIG.

FIG. 7 is a further enlarged view of the gravure printing unit.

8 is a left side view of the gravure printing unit shown in FIG.

FIG. 9 is a view showing an outlet pipe portion of the drying device.

FIG. 10 is a view showing a shutter provided on an outlet pipe.

11 is a diagram showing a rotation speed detection circuit that detects rotations of a slit portion and a master roll of the thermal transfer recording sheet manufacturing apparatus shown in FIG.

FIG. 12 is a schematic view showing a paper tube feeding device according to the present invention.

FIG. 13 is a schematic view showing a notch detection device.

FIG. 14 is a diagram showing a signal flow and its magnitude in the notch detection device.

[Explanation of symbols]

 1 recording sheet 2 paper tube 14 web feeding section 16 gravure printing section 17 slit section 18 winding section 19 paper tube feeding section 26 roll 110 notch 111 infrared projector 112 infrared receiver 114 controller 121 endless link 122 pedestal 123 gripping reversing device 125 Introducing Rotating Plate 126 Air Cylinder 127 Notch Detecting Device 128 Feeding Part 129 Ejecting Device

Claims (4)

[Claims] 1. A paper tube supply device for supplying the paper tube to a winding section that winds a sheet in a roll around a paper tube having a notch at one end. A transfer device for transferring in the horizontal direction, an introduction device connected to the entrance side of the transfer device for introducing the paper tube into the transfer device, and an exit device connected to the exit side of the transfer device for winding the paper tube When the notch is formed and the orientation of the paper tube is correct based on the signal from the notch detection device that detects the presence or absence of the paper tube notch and the orientation of the paper tube , Gripping the paper tube on the transfer device and transferring it to the discharge device in the same orientation, and if a notch is formed and the paper tube orientation is reversed, grip the paper tube on the transfer device in the horizontal direction. And rotate it by about 180 ° and transfer it to the discharge device. A paper core feeding device comprising: a holding and inverting device. 2. The transfer device is connected to the discarding side, and the gripping and reversing device does not operate unless the paper tube has a cutout, thereby sending the paper tube to the discarding side.
A paper tube feeding device as described in the above. 3. The transfer device is stretched between a pair of pulleys,
2. The paper feeding device according to claim 1, comprising an endless link that moves between the pair of pulleys, and a pedestal that is fixed to the endless link and receives the paper tube. 4. The paper tube feeding device according to claim 1, wherein the introducing device comprises an introducing rotary plate having a holding groove on the outer circumference.