JPS62185661A - Roll-shaped sheet driving device - Google Patents

Abstract

PURPOSE:To wind and unwind a sheet automatically, by providing a roll turning mechanism in contact with the periphery of a roll-shaped sheet and a drive mechanism, and actuating the drive mechanism in response to a prescribed signal. CONSTITUTION:There are provided a roll turning mechanism D in contact with the periphery of a roll-shaped sheet 5a for turning it and a sheet drive mechanism actuating in response to a prescribed signal for transmitting a driving force to the turning mechanism D. Therefore, a sheet 5 is wound and unwound automatically from the roll-shaped sheet 5a and a length as long as the sheet 5 unwound can be given to a feed roller 12. Thus, a sheet slip and change of a load caused in a paper feed rotary body are removed even if a heavy roll-shaped sheet 5a is used and the sheet 5 can be wound and unwound without causing jam at a roll mounting portion.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an apparatus for feeding out a sheet from a rolled sheet.

<Prior Art> Conventionally, a roll sheet loading section in a recording device using a roll sheet generally has a shaft 5b of a roll sheet 5a connected to a roll receiver 20 inside the main body, as shown in FIG. The roll 5a is placed in the notch 20a and held, and the roll receiver 20 is rotated to the outside of the apparatus main body about the rotating shaft 21 to move the roll 5a to a position where it can be taken out of the apparatus main body. It was to carry out work such as replenishing or replacing 5a. Further, in such a device, the sheet 5 is fed out by a second paper feed roller 33 arranged oppositely.
Accordingly, the paper was fed into the recording apparatus through the cutter 34.

Furthermore, in the cassette device disclosed in Japanese Patent Publication No. 50-1208, when the cassette is loaded into the main body, the transmission rail of the main body rotates the transmission ring placed outside the cassette, and this rotation causes the transmission rail to interlock with the transmission ring and also to rotate the transmission rail installed inside the cassette. The paper feed roller rotates, and the leading edge of the sheet is fed to the canter via the first feed roller in the main body.

Furthermore, the conveyance of the sheet in this apparatus was such that the sheet was pinched and conveyed by a paper feed roller and a guide that were interlocked with a transmission wheel.

Furthermore, in the device disclosed in Japanese Utility Model Publication No. 60-30258, when a cassette is loaded into the main body and a lever provided on the cassette is rotated, the cassette is locked and a control switch is turned on. The structure was such that the motor rotates, and the rotation of the drive motor rotates the capstan roller, and this rotation sequentially feeds out the sheets from the roll. Furthermore, the conveyance of the sheet in this apparatus was such that the sheet was pinched and conveyed by a capstan roller and a pinch roller.

<Problems to be solved by the invention> However, in the apparatus shown in FIG.
When loading, first, the cutter 3 pulls out the sheet 5 from the roll 5a, feeds the leading edge of the sheet 5 into the recording device until it passes through the cassock 34, and then passes through the cutter 34.
After cutting the sheet 5 so that its leading edge was aligned in step 4, the cut chips had to be removed once, which was very troublesome.Furthermore, the feeding of the sheet 5 in the device was very troublesome. Since the paper was sent into the recording device by the paper roller 33,
When the call 5a is large-sized and extremely heavy, sheet slip may occur on the first paper feed roller 33, or
There were problems such as load fluctuations occurring, making it difficult to smoothly unwind and transport the parts 1-5 into the apparatus.

Furthermore, in the device disclosed in Japanese Patent Publication No. 50-1208, when replacing or replenishing a rolled sheet, the user first pulls the leading edge of the sheet from the rolled sheet to the paper feed roller, and It was very troublesome because the sheet had to be engaged once with the guide provided at the bottom. Also, in this device, if the rolled sheet contains very heavy oil, sheet slip may occur on the paper feed roller or load fluctuations may occur, causing problems in feeding the sheet and inside the device. There were problems such as the transportation not being smooth.

Furthermore, in the above device, the driving means for rotating the transmission wheel is the transmission rail of the main body, so if the cassette is removed, the transmission wheel and the transmission rail of the main body are separated, and therefore the transmission that rotates the paper feed roller is separated. The cassette could not be rewound unless the wheel was rotated by hand, so the cassette could not be rewound automatically once the cassette was removed from the main body.

Furthermore, in the apparatus disclosed in Japanese Utility Model Publication No. 60-30258, the user first pulls the leading edge of the sheet from a rolled sheet to a capstan roller, and then places the sheet between the roller and a pinch roller disposed opposite thereto. It was very troublesome because it had to be fitted once. Also, in this device, when the rolled sheet is extremely heavy, sheet slip may occur on the capstan roller and pinch roller, or load fluctuations may occur.
There were problems such as the sheets not being smoothly fed out and conveyed into the device.

Furthermore, the cassette in the above-mentioned device does not have any measures for rewinding the sheet when replacing or replenishing the rolled sheet, and therefore, when replacing the roll, the capstan roller and pinch roller are The user had to pull out the seat from the position where it was being held between the two.

The present invention was developed in view of the above-mentioned problems, and it is an object of the present invention to solve the above-mentioned problems.

Means for Solving the Problems〉 Means of the present invention for solving the problems described above includes roll rotation that rotates the rolled sheet by contacting the outer peripheral surface of the rolled sheet loaded in a rotatable manner. and a sheet drive mechanism (a) which is driven in response to a predetermined signal and transmits the drive to the roll rotation mechanism.

<Operation> According to the above means, the sheet drive mechanism operates in response to a predetermined signal, thereby automatically feeding and rewinding the sheet from the rolled sheet, and at the same time, the sheet drive mechanism is driven by the roll rotation. The rotation is transmitted to a moving mechanism to rotate the roll.

<Example> Next, an example to which the above means is applied will be specifically described with reference to the drawings.

Figure 1 is a side sectional view of the cassette loaded with rolled sheets, Figure 2 is an external perspective view of the cassette, Figure 3 is a front view of main parts in Figure 2, and Figure 4 is a rolled sheet. It is an explanatory view when loading a cassette.

In the figure, A is a rectangular parallelepiped-shaped cassette into which a rolled sheet can be rotatably loaded.
It is slidably attached to the mounting table 30a, and the lid B, which is an integrated top plate 2 and front plate 3, is attached so as to rotate in the direction of arrow a about a hinge C.

Further, from the lower end of the front plate 3 of the IB to the sheet t-te feeding direction side, four sheet guides 3a whose tips are curved upward are provided in the shape of short shelves, and the outside of the sheet guides 3a on both sides are horizontal. The seat holding part 3b has the same shape as the sheet guide 3a, and the vertical part is formed by drilling a part of the front plate 3 in the shape of an opening. Two pieces are attached so that they are always biased in the direction indicated by the arrow. Furthermore, this sheet holding portion 3b is attached to prevent excessive rotation in the direction indicated by the arrow by a stopper (not shown) provided at the top of the opening-shaped portion. In addition, a notch 7 is provided on one side of the 1;
Alternatively, a magnet (not shown) is attached that can be fixed to the side plate 4 to cover the lid.

Further, the sheet guide 3 is provided on the sheet conveying direction side of the bottom plate l.
Four sheet guides 1a having the same length as a are arranged in the form of short shelves and are arranged opposite to the sheet guide 3a, and trapezoidal or arc-shaped protrusions lb are provided at both ends of the sheet guides 1a on both sides. are protruding from each. Further, two roll receivers 20 are provided upright at positions close to the side plates 4, each having a notch 20a formed upward from the bottom plate 1 to hold the shaft 5b of the rolled sheet 5a. Furthermore, above the bottom plate 1, there is a short shelf-shaped or rod-shaped guide roller 6 made of synthetic resin or metal that guides the sheet 5 fed out from a roll 5a rotating in the direction of arrow C. A shaft 6a is provided on the side plate 4. It is attached so that it rotates around the center.

Next, D is connected to the roll 5a in conjunction with a sheet drive mechanism that will be described later.
In this roll rotation mechanism, an input roller 9 is attached to the side of the front plate 3 of the lid B by a plate 8 so as to rotate integrally with a gear 9b around an axis 9a. A plate 13 is attached to the plate 9a, and the plate 13 is provided with gears 10 and 11 that rotate about their respective axes so as to rotate in conjunction with the rotation of the gear 9b. Furthermore, gear 12a is connected to gear 11.
A rod-shaped roll feed roller 12 made of rubber or synthetic resin and wider than the width of the roll 5a is attached to this gear 12a so as to rotate in conjunction with the rotation of the roll 5a. (Installed and configured.

Further, the roll rotation mechanism is always biased in the direction of arrow d so as to be in contact with the outer peripheral surface of the roll 5a by a torsion spring (not shown) attached to the plate 13 and the front plate 3 around the rotation axis 9a, The feed roller 12 is attached so as to always be in close contact with the outer circumferential surface of the roll 5a, regardless of changes in the roll diameter due to the decrease in the roll 5a. Further, this feed roller 12 reaches a diameter slightly smaller than that of the shaft 5b of the roll 5a, but is stopped by a stopper (not shown) provided on the plate 8 so as not to be biased in the direction of the arrow d beyond that point. There is.

Next, a sheet drive mechanism E provided in the main body of the recording apparatus that serves both to feed and rewind the sheet and to transmit power to the roll rotation mechanism will be described with reference to FIGS. 5 and 6.

FIG. 5 is an explanatory diagram when loading the cassette into the recording apparatus main body, and FIG. 6 is an explanatory diagram of the operation when the cassette is fixed to the recording apparatus main body.

The recording apparatus main body 30 is provided with a mounting table 30a on which the cassette 8 can be slid, and a sheet drive mechanism E is attached to this mounting table 30a.

This sheet drive mechanism E is made of rubber or synthetic resin, and has a first paper feed roller 14.15 which is a short shelf-shaped paper feed rotation body that matches the shape of the sheet guides 1a and 3a.
A transmission roller 1G, which is interlocked with the input roller 9 of the roll rotation mechanism, is attached to the first pick-up roller 14 so as to be vertically opposed to each other via one paper pick-up roller 30a. It is attached so as to interlock with the paper roller ■4, and the transmission roller 16 and the mounting table 3
It is attached so that it is always biased in the direction of arrow e by a spiral spring (not shown) attached to the mounting table 30a, and it is attached so that it is stopped at an appropriate position by a stopper (not shown) provided on the mounting table 30a. Further, the first paper feed roll 14 is connected to a control unit so as to be rotated by a predetermined signal from a control unit (not shown), and the first paper feed roller 1
5 is a weak biasing spring (not shown) attached to the roller 15 and the shaft 14a of the roller 14, or is attached so as to always be biased in the direction of the arrow f by its own weight.
A roller 15b is attached to this roller 15 via an arm 15a.

Further, after installing the cassette 8 at one end of the mounting table 30a of the recording apparatus main body 30 and interlocking the roller rotation mechanism and the drive mechanism E, a device 90 is installed to ensure that these interlocking operations are performed normally. A cassette holding mechanism 30b is attached, a sensor 30c is attached below to detect the presence or absence of sheets 5 to be fed out, and a stopper 31 is attached to the slide direction (direction of arrow g) of the cassette 7) A to stop the movement of the cassette A. is provided. Furthermore, a sheet release lot 32 is provided on the cassette loading side of the recording device main body 30]
It is provided so as to correspond to the vertical portion of the sheet holding portion 3b in item 1i.

Next, roll 5 in cassette A having the above-mentioned configuration
The loading of a will be explained with reference to FIG.

First, when IB is opened wide in the direction of arrow a around the hinge C, the roll rotation mechanism rotates in the direction of arrow d and stops when it hits a stopper (not shown) provided on the plate 8. In this state, the shaft 5b of the roll 5a is inserted into the notch 20a of the plate 20 and the roll 5
A can be made removable. Then, the leading edge of the sheet 5 is aligned at a predetermined position P. When a user stores the roll 5a in the cassette A and closes the lid by rotating the lid B in the opposite direction of the arrow a, the lid B can be fixed to the bottom plate 1 or the side plate 4 by a magnet.

Next, the attachment of the cassette A to the main body 30 of the apparatus will be explained with reference to FIGS. 5 and 6.

First, the user stores the roll 5a in the cassette A, places the cassette I-A on the R stand 30a of the recording apparatus main body 30, and slides it in the direction of the arrow g as shown in FIG. 5(a). As the sheet guide 1a slides in the direction of arrow g, the projections 1b provided at both ends of the sheet guide 1a as shown in FIG. 5(b).
As a result, the roller 15b and arm 15a are pushed upward, and the second paper feed roller 15, which is riding on the roller 14, is pushed upward by a weak biasing spring or its own weight, and the paper feed roller 15 is disposed vertically facing each other. The distance between the second paper feed rollers 14 and 15 is increased. At the same time, the sort release lot 32 pushes the vertical part of the sheet holding part 3b,
The sheet holding portion 3b gradually rotates in the opposite direction about the shaft 3C. Further, as the case (case) A is slid in the direction of the arrow g, the roller 15
passes over the protrusion 1b and guides the sheet guide la to the cassette.
The tip thereof hits the stopper 31 on the mounting table 30a. At the same time, the rod 32 further pushes the vertical part of the sheet presser 3b, and the horizontal part of the sheet presser 3b is fully opened, and the first paper feed roller 14.15 moves the leading edge of the sheet 5 at a predetermined value of 1fiP. A state is reached in which paper can be fed while being held, and the transmission roller 16 and input roller 9 are brought into close contact with each other. In this state, the user! ! Stand 30a
Cassette 7) At one end of the cassette 7), the cassette A is fixed by the holding mechanism 30b so that the roller rotation mechanism and the drive mechanism E are properly interlocked.

Next, the operation of the apparatus in the above state will be explained with reference to FIG.

First, when the user turns on a switch (not shown) provided on the main body of the recording apparatus, the first paper feed roller 14 rotates in the direction indicated by the arrow in response to a predetermined signal from this control section via the control section 41. The first pick-up roller 15 rotates in conjunction with this, and the transmission roller 16 rotates via the chain 17. Next, when the transmission roller 16 rotates, the input roller 9 rotates in conjunction with this rotation, and the gears 10, 11, and 12a rotate in conjunction with the rotation of the input roller 9, and the feed roller 12 moves in the direction of arrow i. As a result, the roll 5a can be rotated in the direction of arrow C. Therefore, if the feed roller 12 is configured to rotate in the direction of the arrow i by the same circumferential distance as the first paper feed roller 14 as the second paper feed roller 14 rotates in the direction indicated by the arrow, the radius of the roll 5a It is possible to always give the same length to the rotation of the roll 5a as the length of the sheet 5 fed out by the first paper feed roller 14 without causing sheet slip or load fluctuation in the first paper feed rollers 14 and 15. The sheet 5 can be automatically fed without causing a jam.

Next, when the roll 5a is rotated in the direction of arrow C, the sheet 5
automatically passes through guide roller 6 to sheet guides 1a and 3.
3, the sheet is held between the first sheet feeding rollers 14 and 15, and sent to the cutter 34 through a sheet guide (not shown) in response to a predetermined signal from the control section. The fed-out sheet 5 passes through the cutter 34 and is sent to a recording section (not shown), and is cut by the cutter 34 when the sheet 5 reaches a predetermined length.

Next, after the recording is completed, the cassette tape)A is removed from the device main body 30.
Let us explain the case of extracting the .

At the time when recording is completed, the leading edge of the sheet 5 is at the cutter 34 position. When the user presses the switch at this point, the first paper feed roller 14 is rotated in the opposite direction of the arrow i in response to a predetermined signal from the control section, and in conjunction with this rotation, the feed roller 12 is rotated in the opposite direction of the arrow i. Since the roller rotates in the direction, the sheet 5 can be automatically rewound onto the roller 5a without causing a jam in the cassette A, and without causing a sheet slip or load fluctuation on the first paper feed roller 14,15. I can do it.

At this time, if the number of revolutions of the first paper feed roller 14 or the number of revolutions of the motor which is the drive source is counted in advance, and the sheet 5 is rewound from the cutter 34 to the predetermined position P, it is incorporated into the control unit. The leading edge of the sheet 5 can be returned to the predetermined value of 1ffiP.

After the rewinding is completed as described above, the cassette holding mechanism 3
When the cassette 0b is released and the cassette A is slid in the direction opposite to the arrow g, the sheet 5 is rewound onto the roll 5a, or the sheet 5 is fixed at a predetermined position P by the sheet presser 3b. , Cassette A can be slid in this state. Thereafter, by opening the lid B, the roll 5a can be replaced or replenished.

In the embodiment described above, the transmission roller 16 of the sheet drive mechanism E and the input roller 9 of the roller rotation mechanism were each made of rollers made of rubber or synthetic resin, but these could be replaced by gears made of synthetic resin or metal. This configuration also allows the same operation as described above.

In the embodiment described above, when the user turns on the switch, the first paper feed roll 14 rotates in the direction opposite to the direction of the arrow to rewind the sheet 5 onto the roll 5a or to cut the sheet 5. 34 to a predetermined position P, as shown in FIG. Rack 3 meshing with input gear 9'
5 to the recording device main body 30 (not shown), and roll feed the length l' of the rack 35 by the length e required for rewinding (the distance from the predetermined value Hp at the leading edge of the sheet to the blade of the cutter 34). The length may be set to a length at which the roller 12 rotates. With this configuration, by sliding the cassette A in the direction opposite to the arrow g, the input gear 9' rotates in the direction of the arrow j, rotates the feed roller 12 in the direction opposite to the arrow i, and rotates the roll 5a in the direction opposite to the arrow i. C, and thereby the sheet 5 can be automatically rewound from the cassette 34 to a predetermined value WP.

Furthermore, in the above configuration, a one-way clutch is installed between the input gear 9' and the shaft of the gear 9' so that rotation is transmitted only in the direction of the arrow j, and the input gear 9' idles in the opposite direction. With this configuration, even if the cassette A is slid toward the main body of the apparatus (in the direction of arrow g), the human gear 9' idles and does not interlock with the feed roller I2 of the roll rotation mechanism, so that the roll 5a
The cassette A can be loaded into the main body of the apparatus without transmitting rotational force to the cassette A.

Further, in the above-described embodiment, the cassette 8 was configured to be slidably attached to the device main body 30, but the cassette 8
-A may be configured to be detachable from the device main body 30,
Alternatively, the loading section for the roll 5a may be incorporated into the main body of the apparatus.

Further, in the above-described embodiment, the roll rotation mechanism excluding the feed roller 12 was installed only on one side of the cassette A, but it was installed on both sides of the cassette A via - number of feed rollers 12, and the If the drive mechanism E on the main body side is also provided in a corresponding manner, the torque applied to the feed roller 12 by the first feed roller 14 can be reduced, and the torque applied by the feed roller 12 to the roll 5a can be reduced. The roll 5a can be rotated with uniform power.

Furthermore, in the embodiment described above, the guide roller 6 for guiding the sheet 5 fed out from the roll 5a was provided so as to rotate around the shaft 6a attached to the side punch 4. It may be configured integrally with the lid B. With this configuration, the roll 5a can be easily loaded into the cassette A. Further, this guide roller 6 can be made unnecessary if the sheet 5 fed out from the roll 5a can be fed out with good smoothness and a constant sheet surface height I2 by the sheet guides la and 3a.

Furthermore, although the feed roller 12 of the roll rotation mechanism is configured as a bar, it may also be configured as a short shelf.

Furthermore, in the embodiment described above, the first paper feed roller 14.
15, transmission roller 16, input roller 9 and feed roller 1
Although each of the rollers 2 is configured as a roller, any rotating body may be used, for example, an endless belt suspended on a pulley, a rotating drum, etc. may be used.

Further, in the above-described embodiment, the first paper feed roller 14 and the transmission roller 16 are interlocked by the chain 17 as the interlocking body, but a rotating belt may be used as long as the interlocking body is etc. is also possible.

<Effects of the Invention> As described above, the present invention automatically feeds out and rewinds a sheet from a rolled sheet by operating the sheet driving mechanism in response to a predetermined signal, and at the same time controls the driving of the sheet driving mechanism from the roll. Since the rotation is transmitted to the rotation mechanism and rotates the roll, the rotation of the roller can be given the same length as the length of the sheet to be fed out. It is possible to eliminate sheet slips and load fluctuations occurring in the rotating body, and to feed and rewind sheets without jamming in the roll loading section. Furthermore, the user can easily replace and replenish rolled sheets.

[Brief explanation of drawings]

Figure 1 is a side sectional view of the cassette loaded with rolled sheets, Figure 2 is an external perspective view of the cassette, Figure 3 is a front view of main parts in Figure 2, and Figure 4 is a rolled sheet. FIG. 5 is an explanatory diagram of loading the cassette into the recording device main body, FIG. 6 is an explanatory diagram of the cassette being fixed to the recording device main body, and FIG. 8 is an explanatory diagram of another embodiment, and FIG. 8 is an explanatory diagram of the prior art. A is a cassette, B is a lid, D is a roll rotation mechanism, E is a sheet drive mechanism, 5 is a sheet, 5a is a rolled sheet, 9 is an input roller, 12 is a feed roller, 14° 15 is a first paper feed roller , 16 is a transmission roller, and 30 is a main body of the recording apparatus.

Claims (1)

[Claims] a roll rotation mechanism that rotates the rolled sheet by contacting the outer peripheral surface of the rolled sheet loaded in a rotatable manner; and a sheet drive that is driven in response to a predetermined signal and transmits the drive to the roll rotation mechanism. A roll sheet drive device consisting of a mechanism.