JPS61169440A - Paper winder - Google Patents

Abstract

PURPOSE:To improve operability and reliability by providing an automatic paper loading function in a paper winder used in a slip issuing machine or the like, and easily pulling out the wound-up paper without a change in shaft diameter of a take-up shaft. CONSTITUTION:A paper winder includes a take-up shaft 1, driving portions 7, 8, 9, 10 for rotating the take-up shaft in the winding direction, and take-up guide members 12a, 12b, 12c, 12d disposed in such a manner as to guide the winding start end of paper fed out from a paper transport path along the peripheral surface of the take-up shaft 1. The take-up shaft 1 has the first portion 4a having the peripheral surface having a comparatively large coefficient of friction with paper and the second portion 4b having the peripheral surface having a comparatively small coefficient of friction between both side flanges 3a, 3b. The take-up guide members 12a, 12b, 12c, 12d are provided with pressure portions 14a, 14d for pressing paper between the first member 4a and the pressure portions.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an automatic loading machine used in a slip issuing machine, etc.
Regarding the paper take-up bag ME etc.

[Background of the invention]

In the slip issuing machine used in automatic transaction equipment, the printed slip is separated into a journal paper that serves as a copy for the financial institution and a statement slip given to the user, and the statement slip is cut for each transaction. and sent to the receiving port, while
The journal paper is conveyed to a paper winding device and wound around a winding shaft.

In conventional paper winding devices, when paper is loaded, an operator manually wraps the winding start end of the paper that has been sent through the paper transport path around the winding shaft, making it ready to start winding. There was a need.

This operation may be performed several times a day, such as when the paper is used up and a new one is loaded, or when the paper jams and the paper is reloaded. There was a lot of fear. For this reason, there has long been a desire to put into practical use a paper winding device with good operability and an automatic loading function that automatically winds the paper around the winding shaft when loading the paper.

A paper winding device with an automatic loading function that has already been put into practical use consists of a rubber sleeve in which the paper winding section of the winding shaft is divided into multiple segments, and a coil spring is wrapped around the rubber sleeve. With conical clamps placed on both end faces of the paper and tightened in the axial direction to enlarge the shaft diameter, the winding start end of the paper guided by the winding guide member is pulled by using friction with the rubber sleeve. There is one that is wound around the take-up shaft. With this device, the friction between the rolled paper and the rubber sleeve is too great to remove the rolled paper as it is, so the rubber sleeve is untightened by the clamp and the shaft diameter is adjusted. Paper is extracted in the reduced state, but after paper is removed, it takes time to return the reduced shaft diameter to its original state and make it ready for winding. It was necessary to provide a large space around the winding shaft.

[Purpose of the invention]

It is an object of the present invention to provide paper that has an automatic paper loading function, that allows the winding of paper to be easily taken out without changing the diameter of the winding shaft, and that has superior operability and reliability. An object of the present invention is to provide a winding device.

[Summary of the invention]

The present invention includes a winding shaft, a drive unit that rotates the winding shaft in a winding direction, and a drive unit configured to guide a winding start end of paper sent out from a paper conveyance path along a circumferential surface of the winding shaft. In the paper winding device, the winding shaft includes a first portion having a circumferential surface having a relatively large coefficient of friction with the paper between flanges on both sides of the winding shaft; , a second portion having a circumferential surface having a relatively small coefficient of friction with the paper, and the winding guide member includes a pressing portion that presses the paper between it and the first portion. It is characterized by:

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

As shown in FIG. 1, the take-up shaft l has a first circumferential surface having a relatively large coefficient of friction with the paper between flanges 3a and 3b on both sides that serve as guides in the width direction of the paper 2. It has a portion 4a and a second portion 4b having a circumferential surface with a relatively small coefficient of friction with the paper, and these two portions constitute a paper winding section.

The constituent material and combination of the first part 4a and the second part 4b are arbitrary, but in this example, rubber is embedded in the shape of a ring in two places on the shaft made of ordinary structural steel, and the other parts are The surface was finished smooth, and the part where the rubber ring was embedded was called the first part 4a, and the other part was called the second part 4b.

In order to facilitate the removal of the wound paper, the outer diameter of the first portion 4a is slightly smaller than the outer diameter of the second portion 4b, and the outer diameter of the first portion 4a is made slightly smaller than the outer diameter of the second portion 4b. One end 4 of the winding shaft including a part of the second portion 4b
C is divided from other parts of the winding shaft at side A in FIG. 1, and has a structure that can be attached and detached together with a flange 3b on one side.

The winding shaft 1 configured as described above is rotatably supported by the bearing portion 6 of the frame 5.

The drive unit for the winding shaft l includes a winding motor 7 shown in FIGS. 1 to 3, and a belt 8 that transmits the rotation of this motor to the winding shaft 1.
, Boo IJ9 and 10.

As shown in FIGS. 1 to 3, winding guide members 12a, 12b, 12c, and 12d are arranged radially around the winding shaft 1. As shown in FIGS. These winding guide members 12a
t 12b.

12 (s and 12d are the fixed shafts 1 parallel to the winding shaft 1, respectively)
3a.

13b, 13C, 13 (constructed so as to be rotatable about 1 as a fulcrum, each tip end formed into an arcuate curved surface along the circumferential surface of the paper winding portions 4a, 4b of the winding shaft 1. Two further rollers 14a and 14d are located near the tips of the winding guide members 12a and 12d.
is installed. These rollers 14a and 14d are provided as pressing parts that press down the paper 2 between the rollers 14a and the first portion 4a of the take-up shaft l, and in this embodiment, rotatable rollers are used so as not to damage the paper. . roller 14a,
14d is a winding guide member 12a as shown in FIG.
, a shaft 15 provided on 12d in parallel with the winding shaft 1
The winding shaft l is supported in a protruding state toward the first portion 4a of the winding shaft l.

When loading paper, all the winding guide members 12a, 12b, 12C, and 12d are connected to the spring 16 as shown in FIG.
a, 16b.

Paper winding sections 4a and 4 of the winding shaft 1 are connected by 16o and 16d.
The paper winding portions 4a, 4b are surrounded in the circumferential direction by the respective arcuate curved surface portions of the winding guide members 12a, 12b, 12(1).

In this state, the paper 2 conveyed from the paper feed section (not shown) through the paper conveyance path 17 is moved to the winding guide member 12a,
Paper winding section 4at 4 by 12b, 12C, 12d
It is guided along the circumferential surface of b and is wound around the winding shaft 1 which is rotated in the direction of the arrow by a motor drive (.
The winding start end of the paper 2 is the winding guide member 12a.

When the paper 2 passes under the rollers 14a and 14d attached to the roller 12d, the paper 2 is moved between the first portion 4a of the take-up shaft and the roller 1.
4a.

14d and will not slip.

At this time, the force that prevents the paper from slipping is provided by the roller 14a.

This is obtained by the frictional force between the contact surface of the paper 2 pressed at 14d and the first portion 4a.

According to the law of friction, the magnitude of the frictional force generated on the contact surfaces of two objects is determined by the product of the normal load on the contact surfaces and the coefficient of friction.
It does not depend on the size of the contact area.

From this, in order to prevent paper from slipping, it is not necessary to make the entire paper winding section of the winding shaft made of rubber as in the conventional example, and instead, as in this embodiment, a part of the paper winding section 4a is made of rubber. It can be seen that it is sufficient to make only the paper from a material such as rubber that has a relatively large coefficient of friction with the paper, and to press the paper against this part.

In an experiment conducted by the present inventors, it was possible to stop the paper from slipping simply by installing rubber-embedded parts with a width of 10III11 at two locations at intervals of 50 out of a paper winding section with a total length of 140 mm. .

If paper feeding from the paper conveyance path 17 is stopped when the paper 2 has been wound one or more times, the winding shaft l cannot rotate because the paper has stopped slipping. increases, so by detecting an increase in this current value, it can be confirmed that winding of the paper around the winding shaft has been completed.

After the winding is completed, the winding guide members 12a, 12b, 12
o, 12d are all pressed against the take-up shaft l (it is not necessary, but it is necessary to reduce the load on the motor 7 when winding the paper), and to prevent slipping in order to make it easier to take out the paper that has been wound up. It is desirable to leave a minimum number of winding guide members and leave the others open.

Figure 3 shows winding guide members 12a, 121), 12C.
Even in this state, the paper 2 is held down by the first portion 4a of the take-up shaft and the roller 14d, so it does not slip on the take-up shaft 1.

FIG. 4 shows an example of the opening/closing mechanism of the winding guide member. Fourth
In the figure, reference numeral 18 is an opening/closing plate provided concentrically with the winding shaft l.By attracting the solenoid 19 in response to a winding completion confirmation signal from a current detector that detects an increase in motor current, the opening/closing plate 18 is rotates in the direction of the arrow, and the pins 2oa, 20b+20C fixed to the opening/closing plate 18 are the springs 16a,
The winding guide member 12a overcomes 16b and 16c.

Push up 12b and 12o to the position shown by the two-dot chain line,
Open.

The driving method for the opening/closing mechanism of the winding guide member is arbitrary, and a manual opening/closing mechanism may be used to open the winding guide member when paper is taken out.

The motor 7 is of continuous rating and applies tension to the paper 2 even when the paper is stopped, and the winding shaft 1 rotates to wind up the paper every time the paper is transported.

The rolled paper is removed as follows. Fifth
Figure (a) shows the state in which the paper 2 is wound on the winding shaft l, and Figure 5 (bl is a diagram showing the state in which the detachable part 4c at one end of the winding shaft is pulled out. All you have to do is put your finger into the hollow part 21 left after pulling out the part 4°, grasp the rolled paper 2 from the inside and outside, and pull it out from the winding shaft l. Most of the rolled paper 2 is Since the second portion 4b of the winding shaft has a relatively small coefficient of friction between the winding shaft and the winding shaft, the winding shaft can be easily removed.

In this embodiment, the outer diameter of the first portion 4a, which has a relatively large coefficient of friction with the paper, is made smaller than the outer diameter of the second portion 4b, which has a relatively small coefficient of friction with the paper, and the paper is removed. However, even if the outer diameters of the first portion 4a and the second portion 4b are the same, the ratio of the first portion 4a to the entire paper winding portion is Because it is small, paper removal is not obstructed. In particular, when the structure is such that the finger can be placed on the inside of the rolled paper as in this embodiment, the circumferential surface of the first portion 4a is connected to the second portion 4.
Even if it is partially higher than the circumferential surface of b,
Experiments have confirmed that paper extraction is possible.

According to this embodiment, there is no need to change the diameter of the winding shaft when taking out the paper unlike in the conventional example in which the entire paper winding part is made of rubber. It is easy to operate, and the space around the winding shaft is small because all you have to do is pull it out toward you. It is also mechanically simple and highly reliable.

Next, another example of a paper winding device having an automatic loading function will be described with reference to FIGS. 6 to 11.

In the examples shown in FIGS. 6 to 8, a slit is provided on the take-up shaft, and a slit positioning sensor is used to align the paper conveyance path with the slit when the paper is loaded. The paper is automatically wrapped around the shaft.

Paper guide members 35 and 36 are rotatably attached via shafts 39 to the paper exit side ends of upper and lower paper guide members 37 and 38, which are fixed at regular intervals, respectively, and when no paper is loaded. At times, the spring 40 is biased so that the outwardly opened tips 35a and 36a come into contact with the outer circumferential surface of the paper winding portion of the winding shaft 31.

The winding shaft 31 has a disk-shaped flange 33 having a diameter larger than the maximum paper winding diameter 32, and is provided with a slit 34 that penetrates the paper winding portion in the radial direction and allows the paper 41 to pass through.

The disc-shaped flange 33 has radial projections 42a and 42b.
This and the slit positioning sensor 43 are used to align the position of the slit 34 with the paper conveyance path formed by the paper guide members 35 and 36 when paper is loaded.

The slit positioning sensor 43 is a photoelectric or electromagnetic position sensor, and detects that the position of the slit 34 coincides with the paper transport path when either one of the protrusions 42a or 42b faces the slit positioning sensor 43. It is something to do. When loading paper, if the slit 34 is not in a position that matches the paper transport path based on the signal from the slit positioning sensor 43, the winding motor is driven and the winding is continued until the slit 34 matches the paper transport path. Rotate the shaft 31 to remove the kudzu. After positioning is completed, paper guide member 3
The paper 41 is fed into the slit 34 from the paper conveyance path formed in step 5.36, and after the paper 41 passes through the slit 34 as shown in FIG. Automatic loading is complete.

When the paper is conveyed from this state, as shown in FIG. It is wound around the winding shaft 31 with the corners 45 and 46 preventing slipping (.

35' and 36' indicate the positions of the winding guide members 35 and 36 when the paper reaches the maximum winding diameter 32, and the rolled paper 41 can be unrolled by removing the front flange (not shown). It is extracted from the shaft 41. In this case, since the frictional resistance between the take-up shaft and the paper is relatively small, the removal of the paper is not hindered.

Figures 9 to 11 show a case where a slit positioning sensor is used to align the slit provided on the winding shaft with the paper conveyance path in the same way as above, but a winding guide member is attached to a part of the outer periphery of the winding shaft. Another example will be shown in which the positioning of the slit can be performed more reliably by providing an engaging portion for the slit.

That is, in the example shown in FIG.
．． 48, and the position of the slit 34 is determined by mechanical engagement with the tips 35a and 36a of the winding guide members 35 and 36. In the example shown in FIG. A concave portion 49 that matches the shape of the tip 36a of the winding shaft 36 is provided, and the slit 34 is positioned by mechanical engagement of these portions.The example shown in FIG. 50, which is a hole or recess 51 provided at the tip end 36a of the paper guide member 36.
The position A of the slit 34 is determined by engaging with the paper guide members 35 and 36. With this structure, the position of the slit 34 can be accurately aligned with the paper conveyance path formed by the paper guide members 35 and 36 when paper is loaded. This improves the reliability of the automatic loading function.

〔Effect of the invention〕

According to the present invention, the take-up shaft has a first portion having a circumferential surface having a relatively large coefficient of friction with the paper, and a circumferential surface having a relatively small coefficient of friction with the paper. Since a second portion is provided to press the paper between the first portion and a pressing portion provided on the winding guide member, the frictional force between the first portion and the paper is applied when loading the paper. It is possible to prevent the paper from slipping and ensure that the paper is wound around the take-up shaft.On the other hand, since the first portion occupies a small proportion of the entire paper winding section, when the paper is taken out, the paper is wrapped around the take-up shaft. It is possible to easily remove the wound paper from the winding shaft without changing the diameter, and it is possible to realize a paper winding device equipped with an automatic loading function that is highly reliable and easy to operate.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of a winding shaft portion showing an embodiment of the present invention;
Fig. 2 is a front view showing the paper loading state of this embodiment, Fig. 3 is a front view showing the winding guide member of this embodiment in an open state, and Fig. 4 is the opening/closing mechanism of the winding guide member. 5 (al, (bl) is a state diagram when paper is taken out, FIG. 6 is a cutaway front view showing another example of a paper winding device equipped with an automatic loading function, and FIG. 7 is its FIG. 8 is a perspective view of this example, FIG. 9, FIG. 10, and FIG.
FIG. 1 is a cutaway front view of another example with a different slit positioning mechanism.

Claims (2)

[Claims] (1) a take-up shaft; a drive unit that rotates the take-up shaft in the winding direction; In the paper winding device, the winding shaft includes a first portion having a circumferential surface having a relatively large coefficient of friction with the paper between flanges on both sides thereof; a second portion having a circumferential surface with a relatively small coefficient of friction with the paper;
A paper winding device characterized in that the winding guide member includes a pressing portion that presses the paper between the winding guide member and the first portion. (2) The paper winding device according to claim (1), wherein the outer diameter of the first portion is smaller than the outer diameter of the second portion.