JP2545157B2 - Automatic paper winding device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for automatically winding a sheet by automatically winding the leading end of a long sheet around a winding shaft.

(Prior Art) A long paper (roll paper) for recording information is fed from a supply shaft, printed with recorded information, and then wound around a winding shaft. The paper is wound by rotating the take-up shaft after fixing the leading end of the paper to the engaging portion of the take-up shaft.

(Problems to be Solved by the Invention) The task of fixing the leading end of the paper to the take-up shaft when replenishing or replacing the paper is not particularly problematic as long as the take-up shaft is provided outside the device. If it is installed, the user will have to insert his / her fingers into the narrow space to handle the paper, which is a troublesome work. Also, if the take-up shaft is moved outside the device, the work space becomes wider, but in the case of a take-up shaft having a large-diameter flange so that fingers cannot easily enter, the flange is used to fix the leading edge of the paper. It is a troublesome work because it has to go through a procedure such as removing.

Therefore, an object of the present invention is to provide an automatic paper winding device capable of winding a long paper by automatically winding the leading end of the paper around a winding shaft without using fingers.

(Means for Solving the Problems) An automatic sheet winding device according to the present invention includes a winding shaft provided with a slit into which a front end of a long sheet is inserted, and a rotation driving unit which rotationally drives the winding shaft. A fixed position stopping means for stopping the winding shaft at a fixed position, a paper leading end insertion position for guiding the leading end of the paper toward the slit of the winding shaft stopped at the fixed position, and winding from the position to the winding shaft. The paper guide means provided so as to be movable back and forth between the retracted positions that do not interfere with the stored paper, the paper feed means for feeding the paper along the paper guide means, and the paper guide means are moved forward and backward between the two positions. When the take-up shaft is stopped at the fixed position by the fixed-position stopping means, the paper guide means is moved from the retracted position to the paper leading edge insertion position, and the paper leading edge is inserted into the slit of the take-up spindle. When the ends And a paper guide advancing / retracting means for moving the paper guide means to the retracted position.

(Operation) In order to wind the leading end of the paper around the take-up shaft, the fixed position stop means is actuated to stop the take-up shaft at the fixed position and guide the leading end of the conveyed paper to the slit of the take-up shaft. The means is moved to the paper leading edge insertion position. The paper fed by the paper feed means advances along the guide means, and the leading end thereof is inserted into the slit of the winding shaft. When the paper guide means retracts to the retracted position, the rotation driving means operates to rotate the take-up shaft and wind the paper having the leading end inserted into the slit of the shaft.

Further, the paper guide advancing / retreating means brings the paper guide means close to the take-up shaft only when inserting the paper into the take-up shaft.
When the paper is taken up, the paper guide means does not interfere with the outer circumference of the paper taken up by the take-up shaft.

(Examples) Hereinafter, the present invention will be described in detail based on the illustrated examples.

In FIG. 1, reference numeral 1 generally indicates an automatic sheet winding device. This apparatus 1 includes a take-up shaft 2, a rotation driving means 3 for rotationally driving the take-up shaft, a fixed position stopping means 4 for stopping the take-up shaft 2 at a fixed position, and a sheet 6 fed by a sheet feeding means 5. Paper guide means 7 for guiding the winding shaft 2,
The paper guide advance / retreat means 8 is configured to move the guide means 7 between a paper leading edge insertion position (see FIG. 1) and a retracted position (see FIG. 4) retracted from this position.

As shown in FIG. 3, the take-up shaft 2 includes a pair of flanges 2a and 2b for aligning both side edges of the paper to be taken up, and these flanges are connected to each other to form a paper core, and Four stays 2d with slits 2c for inserting the paper tip between them, and a spindle fixed to the center of rotation of each flange
2e (only one is shown), and the support shaft is rotatably supported by a frame (not shown). The stay 2d can be separated into a flange 2a side and a flange 2b side. When collecting the wound paper, the side plate (not shown) is removed, and the flange 2b is separated from the flange 2a side together with the paper, and then the stays are joined together to form the winding shaft by mounting the flange 2b. .

In FIGS. 1 and 3, the rotation driving means 3 for rotating the winding shaft 2 is rotatably inserted into a drive pulley 30 rotated by a drive motor (not shown) and a support shaft 2e of the winding shaft 2. Timing pulley 31 and this timing pulley
Friction clutch 32 provided between 31 and spindle 2e
And a timing belt 33 that transmits the rotation of the drive pulley 30 to the timing pulley 31. The friction clutch 32 is a friction plate 32a rotatably inserted in the support shaft 2e.
And a leaf spring 32b that presses this plate against the end face of the timing pulley 31. The leaf spring 32b is backed up by a positioning cam 41 of the fixed position stopping means 4 which will be described later and is fixed to the support shaft 2e, and presses the friction plate 32a against the pulley end surface. Between the leaf spring 32b and the friction plate 32a, a timing plate 32d of a sensor 32c for detecting the rotation speed of the winding shaft 2 is provided.
Is pinched.

Timing belt 33 consists of pulley 90, timing paper 5
It is also wound around 0, the guide pulleys 91, 92, and the timing pulley 93, and transmits the rotational force of one drive motor to a plurality of mechanisms described later via a friction clutch and a one-rotation clutch.

The fixed position stopping means 4 is rotatably supported by the pivot 80 and a positioning cam 41 fixed to the support shaft 2e and having the same number of notches 41a as the slits 2c, and is formed at its free end. A positioning lever 42 that engages and disengages the engaged portion 42a with the notch 41a, and a torsion spring 43 that biases the lever 42 in a direction that engages the engaging portion 42a with the positioning cam 41. The pivot 80 is rotatably supported by a frame (not shown), and an intermediary plate 81 is integrally inserted therethrough. One end of the torsion spring 43 is locked to the intermediary plate 81, and the other end is locked to the positioning lever 42.

As shown in FIGS. 1 and 2, the paper guide advancing / retreating means 8 includes a pivot 80 and an intermediate plate 81, and the pivot 80 has a base end portion 82a (see FIG. 6) of a paper guide arm 82. It is fixed. The other end 82b of the paper guide arm 82 is formed to have a length that reaches a position facing one of the slits of the winding shaft 2 placed at a fixed position. A notch 81a extending in the radial direction is formed in the intermediary plate 81, and a pin 83a provided at one end of the link 83 is engaged with the notch 81a. One pin 83b is provided at one end of the link 83, and is pivotally attached to a free end of a restriction lever 84 rotatably supported on the frame by a support shaft 84a. The other end 83c of the link 83 is a crank composed of a flange of a half-rotating pulley 85 arranged in the lower part of the device 1.
It is pivotally attached to 85a at pin 83d. The half-turn pulley 85 is a timing pulley, and is rotatably coupled to the one-turn pulley 87 via a timing belt 86. Half-turn pulley 85
The ratio of the number of teeth of the one-turn pulley 87 is 2: 1, and when the one-turn pulley 87 makes one turn, the half-turn pulley 85 makes one-half turn. The one-turn pulley 87 and the timing pulley 93 are rotatably supported by a support shaft 94, as shown in FIG. Between the one-turn pulley 87 and the timing pulley 93, the pulley 93
Ratchet 93a provided integrally with the notch 87a (first
(Refer to the drawing), a flange 87b of a pulley 87, a ratchet pawl 87c pivotally mounted on the flange and disengaged with a pawl 87ca of the ratchet 93a, and a locking lever 88 disengaged with the notch 87a. A rotating clutch is provided. A torsion spring 87e that biases the ratchet pawl 87c in a direction to engage the pawl portion 87ca of the ratchet pawl 87c with the ratchet 93a is wound around the pin 87d that pivotally attaches the ratchet pawl 87c to the flange 87b. The locking lever 88 is connected to a solenoid (not shown), and when the solenoid is turned off, the lever engages with the peripheral edge of the flange 87b and then falls into the notch 87a, and the tip of the ratchet pawl 87c that has come to rotate. Abutting against each other to swing the pawl 87c as shown by a chain line 87cA in FIG. 1 to stop it. When the ratchet pawl 87c is swung to the chain line position, the pawl portion 87ca and the ratchet 93a are disengaged, and the rotation transmission between the timing pulley 93 and the one-turn pulley 87 is cut off. When the solenoid (not shown) is turned on and the locking lever moves to the retracted position indicated by reference numeral 88A, the ratchet pawl 87c urged by the torsion spring 87e is
87ca is engaged with ratchet 93a, and timing pulley 93
And the one-turn pulley 87 are integrated. The solenoid is immediately turned off, and the one-turn pulley 87, which has made one turn by turning the half-turn pulley 85 half, is again locked by the locking lever 88 and separated from the pulley 93. When the half-rotating pulley 85 half-rotates, the link 83 swings the intermediary plate 81, and thus the paper guide arm 82 that is substantially integrated therewith. Although the details will be described later, the side edge 81b of the intermediary plate 81 and the bent side edge 42b of the positioning lever 42 are formed in a positional relationship capable of engaging with each other.

As shown in FIG. 1, the paper feeding means 5 includes a feed roller 52 (fifth fifth roller) fixed to a spindle 51 of a timing pulley 50.
(See the figure) and the support shaft 53
And a pinch roller 54 (see FIG. 9) supported by. These rollers 52 and 54 cooperate with each other to form the sheet 6.
Is sent toward the winding shaft 2.

In FIGS. 1 and 2, the paper guide means 7 guides the paper 6 sent by the rollers 52 and 54 to the take-up shaft 2. And an upper guide member 71. The lower guide member 70 is
As shown in FIG. 5, the cores 72, 72 are rotatably inserted into both ends of the support shaft 51, and are provided with a wrapping habit. The arm 82 is connected to a support shaft 82c which is inserted and supported by a tip portion 82b (see FIG. 6) of the arm 82. When the paper guide arm 82 swings, the lower guide member 70 is unwound from the winding core 72 or wound around the winding core along with this. As shown in FIGS. 2 and 4, a guide roller 73 for guiding the paper to be wound is rotatably inserted through the support shaft 82c. The guide roller 73 and the support shaft 82c are not shown in FIG. 1 for convenience of illustration. As shown in FIGS. 7 and 9, the upper guide member 71 has bent portions 71a, 71a formed at the base end portion thereof as the support shaft 5
It is rotatably inserted at both ends of 3 and its front edge 71b
Has a length that reaches the position immediately before the slit 2c of the winding shaft 2. On the upper surface of the upper guide member 71, the paper 6 to be guided
The weight 74 is fixed so as not to lose its rigidity and swing.

When the leading end of the sheet 6 is inserted into the take-up shaft 2, the lower guide member 70, as shown in FIG.
When the front end of the paper is pulled out and positioned at the paper leading edge insertion position, as shown in FIG. 4, it is largely retracted from the insertion position and retracted from the range where it interferes with the paper 6 wound on the winding shaft 2. Located in position. The upper guide member 71 follows the movement of the lower guide member 70 and moves to each position.

 The operation of the embodiment configured as described above will be described.

When a new recording paper is set and the winding of the recording paper is started, the recording paper is removed from the winding shaft 2. At this time, as shown in FIG.
Is in the retracted position and the lower guide member 70 is wound around the core 72.
The position base lever 42 is separated from the positioning cam 41. Further, as shown in FIG. 1, the solenoid (not shown) of the one-rotation clutch is in the off state, and the locking lever 88 cuts off the rotation transmission between the timing pulley 93 and the one-rotation pulley 87. The link 83 is held at the position indicated by the chain line.

In FIG. 1, when a drive motor (not shown) is activated, the timing belt 33 rotates to rotate the winding shaft 2, the feed roller 52, and the timing pulley 93, respectively.
When a solenoid (not shown) is turned on, the locking lever
88 moves to the position indicated by reference numeral 88A and engages the clutch,
The rotation of the pulley 93 is transmitted to the one-turn pulley 87. The solenoid is turned off immediately so that the locking lever 88
It waits until it abuts against the peripheral edge of 87b and engages with the notch 87a, and when the pulley 87 is rotated once, the rotation transmission is cut off.

When the one-turn pulley 87 makes one turn, the half-turn pulley 85
Is rotated half a turn to rotate the pin located at 83dA to the position shown at 83d. The rotation of the pulley 85 pushes up the link 83 from the chain line position to the solid line position.
The movement of the link is transmitted to the intermediary plate 81 while its delusion is restricted by the restriction lever 84, and the plate is rotated clockwise around the pivot 80.

When the intermediary plate 81 rotates, the positioning lever 42 biased by the torsion spring 43 rotates clockwise, and the engaging portion 42a at the tip thereof abuts the peripheral surface of the rotating positioning cam 41. Let When one of the notches 41a of the cam is engaged with the engaging portion 42a, the positioning cam 41, that is, the winding shaft 2 integrated with the positioning cam 41 is stopped at a fixed position. This fixed position means that the adjacent stays
One of the slits 2c formed by 2d and 2d is a position facing the front end of the paper guide unit 7 placed at the paper front end insertion position. When the positioning cam 41 is stopped, the timing pulley 31 and the friction plate 32a that have been rotating until now have been rotated.
And the sensor 32c outputs a signal that does not change between ON and OFF when the winding shaft 2 stops.

Further, the rotation of the intermediary plate 81 causes the paper guide arm 82, which is integral with the intermediary plate 81, to rotate in the same direction via the pivot 80, and the lower guide member 70, which is a full-fledged body, connected to the tip of the media guide arm 82 is moved to the position shown in FIG. From the retracted position shown in FIG. 2 to the paper leading edge insertion position shown in FIG. When the paper guide arm 82 rotates, the upper guide member 71, which is in contact with the paper guide arm 82 by its own weight, rotates following the arm and is positioned at the insertion position shown in FIGS. 1 and 2. That is, as shown in FIG. 2, when the paper guide arm 82 is rotated, the paper guide means 7 is moved with it.
Is moved so that its tip is opposed to one slit 2c of the winding shaft 2 placed at a fixed position.

On the other hand, the paper 6 is fed by its conveying means (not shown) with its leading end directed to the paper feeding means 5. And
When the leading edge of the sheet 6 is held by the feed roller 52 and the pinch roller 54, the sheet guide means 7 is placed at the sheet leading edge insertion position as shown in FIG. Therefore, the paper 6 sent by both rollers is the two lower guide members.
The leading end 6a is inserted into the slit 2c through a sheet passage constituted by 70 and the upper guide member 71. The length of the sheet passing through the slit 2c has passed a sheet detection position (not shown) so as not to come out of the slit when the sheet guide means 7 retracts and when the winding shaft 2 rotates to start winding. Determined by controlling the feed time from time to time.

When the insertion of the sheet 6 into the slit 2c is completed, as shown in FIG.
Move once to the position
After connecting to and rotating once, stop. The rotation of the pulley 87 causes the half-rotation pulley 85 to make a half rotation through the timing belt 86, and the link 83 is moved from the solid line position to the chain line position. When the link 83 moves to the chain line position, as shown in FIG. 4, the intermediary plate 81 rotates counterclockwise, and the paper guide arm 82 rotates counterclockwise via the pivot 80. arm
When the 82 is rotated, the lower guide member 70 is wound around the winding core 72 by its own habit, and the upper guide member 71 is swung up and lifted to the retracted position.

In this way, the paper guide means 7 is the fixed position stopping means 4
When the winding shaft 2 is stopped by the sheet guide moving means 8, the sheet guide moving means 8 moves it from the retracted position to the leading end insertion position for guiding the sheet 6 to the slit 2c, and when the insertion into the slit 2c is completed, it is moved to the retracted position. , Does not come into contact with the outer circumference of the paper 6 wound around the winding shaft 2. Therefore, the outer periphery of the paper 6 can be wound while being protected.

On the other hand, when the intermediary plate 81 rotates counterclockwise, its side edge 81b comes into contact with the bent side edge 42b of the positioning lever 42 so that the arm resists the elasticity of the torsion spring 43 (see FIG. 1). And pushes it counterclockwise to disengage the engagement portion 42a from the notch 41a and release the positioning cam 41. In FIG. 3, when the restraining force on the positioning cam 41 is released, the timing pulley 31
Is transmitted to the support shaft 2e via the friction clutch 32 to rotate the winding shaft 2. When the winding shaft 2 is rotated, as shown in FIG. 4, the leading ends of the sheets 6 inserted into the slits 2c, 2c are wound around the stays 2d, 2d and locked on the shaft. become. When the front end of the paper is wound on the stay, the tension of the paper does not act on the take-up shaft 2, so the rotation speed is equal to the rotation speed of the timing pulley. This is detected by the sensor 32c (see FIG. 3). Although it is detected, when the process of winding the front end is completed and the process of winding the paper is started, the load due to the tension of the paper is applied,
A slip between the timing pulley 31 and the friction plate 32a causes the rotation speed of the winding shaft 2 to decrease. Completion of the winding operation is detected by detecting the speed change, and the winding operation associated with the recording operation is restarted.

As shown in FIG. 4, the paper fed along with the recording operation is guided by the paper guide means 7 located at the retracted position and wound up by the winding shaft 2. Paper guide means 7
The tip portion 71b of the upper guide member 71 is located between the flanges of the winding shaft 2, but is positioned so as not to interfere with the outer diameter of the rolled-up paper sheet that is maximally wound up.

In the operation described above, when the operation of inserting the leading end of the paper into the take-up shaft 2 is executed, there is no paper on the shaft, but the take-up shaft 2 with the paper wound is stopped at a fixed position. There are times when you want to let it. For example, in order to take out the information being recorded to the outside of the apparatus, it is necessary to cut the paper in the middle and remove the wound paper from the shaft. In this case, when a predetermined time has elapsed from the output of the paper cutting signal, the locking lever 88 is operated to operate the fixed position stopping means 4 and the paper guide advancing / retreating means 8. At this time, there is no problem in stopping the winding shaft 2 at a fixed position by the positioning lever 42, but there is a problem that the paper guide arm 82 interferes with the outer circumference of the wound paper. Therefore, if a suitable clutch means such as a friction clutch is interposed between the paper guide arm 82 and the intermediary plate 81, the paper guide arm 82 that directs the paper guide means 7 to the paper leading edge insertion position (see FIG. 2). Can be prevented from being damaged. Then, after removing the recorded paper, the paper guide arm 82 may be manually rotated to the position shown in FIG.

In the illustrated embodiment, the paper guide arm 82 is swung to move the paper guide means 7 back and forth. However, if space permits, the arm 82 may be slid to move the paper guide means 7 back and forth.

In the winding shaft 2 of the illustrated embodiment, the slits 2e for inserting the leading end of the paper are formed by the four stays 2d forming the winding core. However, the winding shaft 2 has slits formed in the cylindrical winding core. It may be.

(Effects of the Invention) As described above, according to the present invention, since manual work in a narrow space can be omitted, the work of winding the leading end of the paper around the take-up shaft can be easily and reliably performed. Further, since the paper guide means is brought close to the take-up shaft only when the paper is inserted into the take-up shaft, the paper guide means interferes with the outer circumference of the paper taken up by the take-up shaft when taking up the paper. Therefore, an unnecessary load such as the weight of the paper guide means is not applied to the wound paper, and the paper can be wound while being protected.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a front view showing a sheet guide means and a sheet guide advancing / retreating means placed at a sheet leading edge insertion position, and FIG. 3 is a winding shaft and its drive. FIG. 4 is a plan view showing a part of the means, FIG. 4 is a front view showing the paper guide member and the paper guide advancing / retreating means placed in the retracted position, and FIG. 5 is a plan sectional view showing an example of the paper guide means. 6 is a plan view showing a paper guide arm of the paper guide advancing / retreating means, FIG. 7 is a plan view showing an upper guide member of the paper guide means, and FIG. 8 is an outline of clutch means for controlling the paper guide advancing / retreating means. A sectional view and FIG. 9 are plan views showing the positional relationship between the paper feeding means and the paper guiding means. 2 ... Winding shaft, 3 ... Rotation drive means, 4 ... Fixed position stopping means, 5 ... Paper feeding means, 6 ... Paper, 7 ... Paper guide means, 8 ... Paper guide advancing / retreating means, 2c ... … Slits, 30 …… Drive pulleys, 33 …… Timing belts, 41…
… Positioning cam, 42 …… Positioning lever, 52 …… Feed roller, 54 …… Pinch roller, 70 …… Lower guide member,
71 …… Upper guide member, 82 …… Paper guide arm, 83 ……
Link.

Claims (1)

(57) [Claims] 1. A device for winding the leading end of a long sheet around a take-up shaft, a take-up shaft having a slit for inserting the leading end of the paper, a rotation driving means for rotationally driving the take-up shaft, and the above-mentioned take-up device. A fixed position stopping means for stopping the take-up shaft at a fixed position, a paper leading end insertion position for guiding the leading end of the paper toward the slit of the take-up shaft stopped at the fixed position, and the winding shaft wound from this position. The paper guide means is provided so as to be able to move back and forth between the retracted positions where it does not interfere with the paper, the paper feed means for feeding the paper along the paper guide means, and the paper guide means for moving the paper guide means back and forth between the two positions. When stopping the winding shaft at a fixed position by the fixed position stopping means, the paper guide means is moved from the retracted position to the paper leading end insertion position, and the insertion of the paper leading end into the slit of the winding shaft is completed. Do Automatic paper take-up device and a paper guide moving means for moving to the retreat position the paper guide means.