JPH0485254A - Automatic rewinder of paper - Google Patents

Abstract

PURPOSE:To automatically roll a paper end onto a rewinding shaft without using a finger by moving a paper guide means to a paper end inserting position, inserting paper into a slit of the rewinding shaft, and rotating it when the paper takes refuge. CONSTITUTION:When a half rotational pulley 85 is rotated to a position shown by a code 83d, an intermediary plate 81 is turned about a pivotal shaft 80 through a link 83. When a positioning lever 42 is turned to engage its point end engaging part 42a with one of notches 41a of a cam, the integrally formed rewinding shaft 2 is stopped in a fixed position. Rotation of the intermediary plate 81 turns a paper guide arm 82 in the same direction to oppose lower and upper guide members 70, 71 to a slit 2c. On the other hand, paper 6, whose end is held between a feed roller 52 and a pinch roller 54, passes through a paper passage, constituted of the members 70, 71, and the end 6a of the paper is inserted into the slit 2c. When the insertion is completed, the link 83 is moved from a full line position to a chain line position. When the positioning cam 41 is released by disengaging the engaging part 42a from the notch 41a, the rewinding shaft 2 is rotation-driven by transmitting rotation to a supporting shaft 2e.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device that automatically winds the leading end of a long sheet of paper around a winding shaft to automatically wind the sheet.

(Prior Art) Long paper (roll paper) on which information is recorded is fed out from a supply shaft, has recorded information printed on it, and is then wound onto a take-up shaft. After the leading end of the paper is fixed to a locking portion of a winding shaft, the paper is wound up by rotating the winding shaft.

(Problem to be Solved by the Invention) The work of fixing the leading end of paper to the take-up shaft when replenishing or replacing paper is not a problem if the first take-up shaft is installed outside the device, but if it is installed inside the device. If such a paper is provided, the user must insert his or her fingers into a narrow space to handle the paper, which is quite a cumbersome task.

In addition, moving the take-up shaft outside the device will increase the work space, but if the take-up shaft has a flange with a large diameter so that your fingers cannot easily fit into it, it is necessary to use the flange to secure the leading edge of the paper. This is a cumbersome task as it requires steps such as removing the

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an automatic paper winding device that can wind up a long paper by automatically winding the leading edge of the paper around a winding shaft without using hands or fingers.

(Means for Solving Problems) The automatic paper winding device of the present invention includes a winding shaft provided with a slit into which the leading end of a long sheet of paper is inserted, and a fixed position for stopping the winding shaft at a fixed position. a stopping means; a paper guide means provided so as to be movable back and forth between a paper leading edge insertion position for guiding the leading edge of the paper towards the slit of the winding shaft stopped at a fixed position and a retreat position evacuated from this position; , paper guide advancing/retracting means for advancing and retracting the guide means between the two positions;
The apparatus includes a paper feeding means for feeding the paper along the paper guide means, and a rotational driving means for rotationally driving the winding shaft.

(Function) In order to wrap the leading edge of the paper around the take-up shaft, the fixed position stop means is activated to stop the take-up shaft at a fixed position, and the paper is stopped in order to guide the leading edge of the paper being conveyed into the slit of the take-up shaft. The guide means is moved to the paper leading edge insertion position. The paper fed by the paper feeding means advances along the guide means, and its leading end is inserted into the slit of the winding shaft. When the paper guide means is retracted to the retracted position, the rotation drive means is activated to rotate the take-up shaft and wind the paper whose leading end is inserted into the slit of the shaft.

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

In FIG. 1, reference numeral 1 generally indicates an automatic paper winding device. This device 1 includes a winding shaft 2, a rotation driving means 3 for rotationally driving the winding shaft, a fixed position stopping means 4 for stopping the winding shaft 2 at a fixed position, and a sheet 6 fed by a sheet feeding means 5. paper guide means 7 for guiding the paper to the take-up shaft 2;
This guide means 7 is moved from the paper leading edge insertion position I (see Figure 1) to the retracted position! (See FIG. 4).

As shown in FIG. 3, the winding shaft 2 includes a pair of flanges 2a and 2b that align both side edges of the paper to be wound, and these flanges are connected to each other to form a winding core of the paper. It consists of four stays 2d with slits 2C formed therebetween, into which the leading edge of the paper is inserted, and a support shaft 2e (only the negative direction is shown) fixed to the center of rotation of each flange; this support shaft is not shown. It is rotatably supported by a frame. The stay 2d is connected to the flange 2a side and the flange 2
6. When collecting the rolled up paper, 1. Remove the side plate (not shown) and remove the flange 2.
b is separated from the flange 2a side together with the paper, and then the stays are connected to each other to attach the flange 2b to form a take-up shaft.

In FIGS. 1 and 3, a rotation drive means 3 for rotating the winding shaft 2 is rotatably inserted through a drive pulley 30 rotated by a drive motor (not shown) and a support shaft 2e of the winding shaft 2. It consists of a timing pulley 31, a friction clutch 32 provided between the timing pulley 31 and the support shaft 2e, and a timing belt 33 that transmits the rotation of the drive boob IJ30 to the timing pulley 31. The friction clutch 32 includes a friction plate 32 a rotatably inserted through the support shaft 2 e and a leaf spring 32 b that presses the plate against the end surface of the timing pulley 31 . The leaf spring 32b is backed up by a positioning cam 41 of a fixed position stopping means 4, which will be described later, which is fixed to the support shaft 2e, and presses the friction plate 32a against the end surface of the pulley. Between the leaf spring 32b and the friction plate 32a, there is a timing plate 32d for a sensor 32c that detects the rotational speed of the winding shaft 2.
is being held.

The timing belt 33 is connected to a pulley 90. Timing pulley 50. Guide pulley 91.92. timing pulley 9
3 is also turned, and the rotational force of one drive motor is transmitted to a plurality of mechanisms to be described later via a friction clutch or a one-turn clutch.

The fixed position stopping means 4 is rotatably supported by a positioning cam 41 fixed to the support shaft 2e and formed with the same number of notches 41a as the number of slits 2c, and a pivot shaft 80,
A positioning lever 42 that engages and disengages an engaging portion 42a formed at its free end from a notch 41a.

It consists of a torsion spring 43 that urges this lever 42 in a direction to engage 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 intermediate plate 81, and the other end is locked to the positioning lever 42.

As shown in FIGS. 1 and 2, the paper guide advancement/retraction means 8 includes a pivot 80 and an intermediary plate 81, and the pivot 80 has a base end 82a of a paper guide arm 82 (see FIG. 6).
is fixed. The other end 82 of the paper guide arm 82
b is formed in such a length that it reaches a position facing one of the slits of the winding shaft 2 placed in a fixed position. A notch 81a extending in the radial direction is formed in the intermediate plate 81, and a pin 83a provided at one end of the link 83 is engaged with the notch 81a. A pin 83b is provided at one end of the link 83, and its free end is pivotally connected to a regulating lever 84 rotatably supported by the frame via a support shaft 84a. The other end 83c of the link 83 is pivotally connected by a pin 83d to a crank 85a consisting of a flange of a half-turn pulley 85 disposed at the bottom of the device 11. The half-rotation pulley 85 is a timing pulley, and is rotationally connected to the one-rotation pulley 87 via a timing belt 86. The ratio of the number of teeth of the half-rotation pulley 85 and the one-rotation pulley 87 is 2:1,
When the one-turn pulley 87 makes one turn, the half-turn pulley 85 makes a half turn. One rotation pulley 87 and timing pulley 93
is rotatably supported on a support shaft 94, as shown in FIG. Between the one-rotation pulley 87 and the timing pulley 93, there is a ratchet 93a provided integrally with the pulley 93, and a pulley 8 having a notch 87a (see FIG. 1).
A one-turn clutch is provided which includes a flange 87b of No. 7, a ratchet pawl 87c pivotally attached to the flange and engaged with and disengaged from a ratchet 93a, and a locking lever 88 engaged with and disengaged from a notch 87a. The locking lever 88 is connected to a solenoid (not shown), and when the solenoid is off, it fits into the notch 87a and engages with the ratchet pawl 87c, as shown by the solid line in FIG. Although the engagement between the pawl and the ratchet 93a is released and the rotation transmission between the pulley 93 and the boo "J87" is cut off,
When the solenoid is turned on and moves away from the notch 87a as shown by the broken line 88A, the ratchet pawl 87c engages with the ratchet 93a, causing the timing pulley 93 and the one-turn pulley 87 to rotate together. The solenoid is supposed to turn off immediately.

The one-turn pulley 87, which has rotated once and caused the half-turn pulley 85 to turn half a turn, is locked again by the locking lever 88 and the pulley 93 is locked again.
be separated from When the half-rotation pulley 85 makes a half-rotation,
The link 83 swings the intermediate plate 81, thereby swinging the paper guide arm 82 which is substantially integral therewith. Although details will be described later, the side edge 81b of the intermediary plate 81 and the positioning lever 42
are formed in a positional relationship that allows them to engage with the side edges 42b of the bent portion. .

As shown in FIG. 1, the paper feeding means 5 includes a feed roller 52 (
These rollers 52 and 54 are composed of a pinch roller 54 (see FIG. 9) that is in contact with this roller and supported by a spindle 53 (see FIG. 9). The paper 6 is sent toward the take-up shaft 2 by using the winding shaft 2.

In FIGS. 1 and 2, the paper guide means 7 guides the paper 6 fed by the rollers 52, 54 to the take-up shaft 2, and includes a lower guide member 70 consisting of a full-length structure and a swingable lower guide member 70. It consists of an upper guide member 71. As shown in FIG. 5, the lower guide member 70 is composed of a full-length member that has the tendency to wind around a winding core 72° 72 that is rotatably inserted through both ends of the support shaft 51. Part 70a
is connected to a support M82c that is inserted through and supported by the tip end 82b of the paper guide arm 82 (see FIG. 6). When the paper guide arm 82 swings, the lower guide member 70 is unwound from the winding core 72, and the 5 support shaft 82c that is wound around the winding core is unwound as shown in FIGS. 2 and 4. Guide roller 7 guides the paper being wound up.
3 is rotatably inserted. 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 its base end, which are rotatably inserted into both ends of the support shaft 53, and its distal end edge 71b.
has a length that reaches a position immediately in front of the slit 2C of the winding shaft 2. A weight 74 is fixed to the upper surface of the upper guide member 71 to prevent it from swinging due to the rigidity of the paper 6 being guided.

As shown in FIG.
2, the paper is pulled out and positioned at the paper leading edge insertion position, and when the leading edge insertion is completed, it is moved back from the insertion position and positioned at the retracted position, as shown in FIG. The upper guide member 71 moves to each position following the movement of the lower guide member 70.

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

When a new recording paper is set and winding is started, the recorded paper has already been removed from the winding shaft 2.

At this time, as shown in FIG. 4, the paper guide means 7 is placed in the retracted position and the lower guide member 70 is wound around the core
The positioning lever 42 is separated from the positioning cam 41. Further, as shown in FIG. 1, the solenoid (WI not shown) of the one-turn clutch is in an OFF state, and the locking lever 88 cuts off rotation transmission between the timing pulley 93 and the one-turn pulley 87.
Link 83 is held in the position shown by the chain line.

In FIG. 1, when a drive motor (not shown) is started, the timing belt 33 rotates and the winding shaft 2. Feed roller 52. When a solenoid (not shown) that rotates each timing pulley 93 is turned on, the locking lever 88 moves to a position indicated by reference numeral 88A to engage the clutch, thereby transmitting the rotation of the pulley 93 to the one-turn pulley 87. Since the solenoid is immediately turned off, the locking lever 88 waits until it comes into contact with the periphery of the flange 87b and engages with the notch 87a, and when the pulley 87 rotates once, 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 placed at position 83dA to the position shown at 83d. Rotation of pulley 85 pushes link 83 up from the chain line position to the solid line position. The movement of the link is transmitted to the intermediary plate 81 while its movement is regulated by the control lever 84, and the plate is moved to the pivot 81.
Rotate clockwise around 0.

When the intermediate plate 81 rotates, the positioning lever 42 , which is biased by the torsion spring 43 , rotates clockwise, and the engaging portion 42 a at its tip abuts against the circumferential surface of the rotating positioning cam 41 . let When one of the notches 41a of the cam engages with the engaging portion 42a, the positioning cam 41, that is, the winding shaft 2 integrated therewith, is stopped at a fixed position. This fixed position refers to the slit 2c formed by the adjacent stays 2d, 2d.
6. When the positioning cam 41 is stopped, the timing pulley 31 and the friction plate 32a, which have been rotating it until now, The sensor 32c outputs a signal indicating that the winding shaft 2 is stopped.

Further, the rotation of the intermediate plate 81 causes the paper guide arm 82 integrated therewith to rotate in the same direction via the pivot shaft 80, and the lower guide member 70 consisting of a key connected to the tip of the paper guide arm 82 is rotated in the same direction as shown in FIG. The sheet is stretched and moved from the retracted position shown in FIG. 1 to the paper leading end insertion position shown in FIG. When the paper guide arm 82 rotates, the upper guide member 7 is in contact with it due to its own weight.
1 rotates following the arm and is located at the insertion position shown in FIGS. 1 and 2. That is, as shown in FIG. 2, when the paper guide arm 82 rotates, the paper guide means 7 is moved accordingly, and its tip is inserted into the slit of the winding shaft 2 placed in a fixed position. This means that it is facing 2c.

On the other hand, the paper 6 is fed with its leading end toward the paper feeding means 5 by a conveying means (not shown). When the leading edge of the paper 6 is pinched by the feed roller 52 and the pinch roller 54, the paper guide means 7
As shown in the figure, it is placed at the paper leading edge insertion position. Therefore, the paper 6 sent by both rollers passes through a paper path composed of two lower guide members 70 and an upper guide member 71, and its leading end 6a is inserted into the slit 2C. The length of the paper that passes through the slit 2C is such that it does not come out of the slit when the paper guide means 7 retreats and when the winding shaft 2 rotates and starts winding.

It is determined by controlling the feeding time from the time when the paper passes a paper detection position (not shown).

When the insertion of the paper 6 into the slit 2C is completed, as shown in FIG.
It once moves to the position shown by 8A, connects the one-turn pulley 87 to the pulley 93, makes one turn, and then stops. The rotation of the pulley 87 causes the half rotation pulley 85 to rotate by half a rotation via the timing belt 86, and moves the link 83 from the solid line position to the chain line position. When the link 83 moves to the chain line position, the intermediary plate 81 rotates counterclockwise, as shown in FIG. 4, and the paper guide arm 82 rotates counterclockwise via the pivot shaft 80. When the arm 82 rotates, the lower guide member 70 is wound around the winding core 72 by its own behavior, and the upper guide member 71 follows and is swung up to be located at the retracted position.

On the other hand, when the intermediary plate 81 rotates counterclockwise, its side #81b contacts the bent side $42b of the positioning lever 42, causing the arm to resist the elasticity of the torsion spring 43 (see FIG. 1). and push it counterclockwise to separate the engaging portion 42a and the notch 4.
1a to release the positioning cam 41. Third
In the figure, when the restraining force on the positioning cam 41 is released, the rotation of the timing pulley 31 is transmitted to the support shaft 2e via the friction clutch 32 and drives the winding shaft 2 to rotate. When the winding shaft 2 is rotated, as shown in FIG. 4, the leading end of the paper 6 inserted into the slits 2c, 2c is wound around the stays 2d, 2d and locked onto the shaft. become. When the leading end of the paper is wound around the stay, the tension of the paper is not acting on the take-up shaft 2, so its rotational speed becomes relatively high, and this is detected by the sensor 32C (see FIG. 3). When the tip winding operation process is completed and the paper winding operation begins, a load is applied due to the tension of the paper, and the timing pulley 31 and friction plate 32a slip, causing rotation of the winding shaft 2. Speed decreases. By detecting this speed change, the completion of the winding operation is detected, and the winding operation accompanying the recording operation is restarted.

As shown in FIG. 4, the paper that is sent during the recording operation is guided by the paper guide means 7, which is located at the retracted position, and is wound around the winding shaft 2.

The tip end 71b of the upper guide part 71 of the paper guide means 7 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 paper that has been wound up to the maximum. I am made to do so.

The operation explained above is such that when performing the operation of inserting the leading edge of paper into the winding shaft 2, the winding shaft 2 with the paper wound around it is stopped at a fixed position even though there is no paper on the shaft. There are cases where you want to do so. For example, if it is desired to take out the information being recorded outside the apparatus, it is necessary to cut the paper in the middle and remove the paper that has been wound once from the shaft. In this case, when a predetermined period of time has elapsed since the output of the paper cutting signal, the locking lever 88 is actuated to operate the fixed position stopping means 4 and the paper guide advance/retreat means 8. At this time, there is no problem in stopping the winding shaft 2 at a fixed position with the positioning lever 42, but there is a chance that the paper guide arm 82 interferes with the outer periphery of the wound paper. Therefore, the paper guide arm 82 and the intermediary plate 8
If an appropriate clutch means such as a friction clutch is interposed between the paper guide arm 82 and the paper guide arm 82, which directs the paper guide means 7 toward the paper leading edge insertion position (see FIG. 2), damage to the paper guide arm 82 can be prevented. 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 means 7 is moved forward and backward by swinging the paper guide arm 82, but if space permits, the paper guide means 7 may be moved forward and backward by sliding the arm 82.

In addition, the winding shaft 2 of the illustrated embodiment has four parts that constitute a winding core.
Although the slit 2e into which the leading edge of the paper is inserted is formed in the book stay 2d, a winding shaft having a slit formed in a cylindrical winding core may be used.

(Effects of the Invention) As described above, according to the present invention, manual work in a narrow space can be omitted, so winding the leading edge of the paper around the winding shaft can be easily and reliably performed.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a front view showing the paper guide means placed at the paper leading edge insertion position and the paper guide advancing/retreating means, 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 placed in the retracted position and the paper guide advance/retreat means, and FIG. 5 is a plan cross-sectional view showing only the essential parts of an example of the paper guide means. FIG. 6 is a plan view showing the paper guide arm of the paper guide advance/retreat means, FIG. 7 is a plan view showing the upper guide member of the paper guide means, and FIG. 8 is an overview of the clutch means for controlling the paper guide advance/retreat means. The sectional view and FIG. 9 are plan views showing the positional relationship between the paper feed means and the paper guide means. 2... Winding shaft, 3... Rotation driving means, 4... Fixed position stopping means, 5... Paper feeding means, 6... Paper, 7
... Paper guide means, 8... Paper guide advance/retreat means,
2c...Slit, 30...Drive pulley, 33...
...Timing belt, 41...Positioning cam, 42
...Positioning lever, 52...Feed roller, 5
4... Pinch roller, 70... Lower guide member, 71
... Upper guide member, 82 ... Paper guide arm, 8
3...Link.

Claims (1)

[Claims of Claims] A device for winding the leading edge of a long sheet of paper around a take-up shaft, comprising: a winding shaft provided with a slit into which the leading end of the paper is inserted; and a fixed position stopping means for stopping the winding shaft in a fixed position. a paper guide means provided to be movable back and forth between a paper leading edge insertion position for guiding the paper leading edge toward the slit of the winding shaft stopped at a fixed position and a retracted position for retreating from this position; Paper guide advance/retreat means for advancing and retracting the paper guide means between the two positions. An automatic paper winding device comprising a paper feeding means for feeding the paper along the paper guide means, and a rotational drive means for rotationally driving the winding shaft.