JP2628208B2 - Paper transport device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION (Industrial application field) The present invention relates to a sheet conveying device, and is suitable for connecting to a laser printer, a copying machine, or the like, for example, to process sheets to be sequentially conveyed one by one. The present invention relates to a sheet conveying device suitable for an automatic collating machine or the like used for automatically binding and binding several sheets.

(Prior art) In recent office equipment, downsizing, certainty of paper loading and discharging operation, etc. are required, and the automatic collating machine and the like have been variously improved without exception. I have.

In the conventional paper transport apparatus, the reliability of the paper discharging operation is first given priority.

On the other hand, as for paper used for office work, paper of various sizes is used due to its diversification, and transport devices adapted to those are provided to various markets.

A typical example is a structure in which conveying rollers are arranged at small intervals in accordance with the size of the smallest size paper among various sizes of paper. By arranging the transport rollers at such small intervals in this way, even if the paper is the largest size, there is no problem in transporting anything just by using a large number of transport rollers, regardless of the size of the paper. The mistake was gone.

(Problems to be Solved by the Invention) However, such a transport device has the following major problems.

That is, if the paper is large, the interval between the transport rollers may be increased accordingly, but it is necessary to install an extra transport roller because the small paper must be transported as well. is there. Therefore, since the transport roller is also driven and rotated, the mechanism becomes complicated mechanically, which leads to an increase in cost.

In addition, when the papers of various sizes are transported to the mounting table and mounted thereon, if the paper sizes are different, the mounting table itself has a space for a large-sized paper. Therefore, when aligning the paper edge to a predetermined position on the mounting table, the arrangement of the transport rollers for transporting large-size paper allows the paper edge of large-size paper to be easily aligned, but in the case of small-size paper In this case, the sheet is separated from the conveying roller before the sheet is conveyed to a position where the sheet edge is aligned, so that the sheet edges of all sizes cannot be aligned. On the other hand, conversely, for conveying small-sized paper, if the distance between the conveying rollers is narrowed and the conveying rollers are arranged so that the small paper can be conveyed to a position where the paper edges are aligned, large-sized paper can be conveyed. In this case, the large-sized paper cannot be completely removed from the transport roller, and the paper ends cannot be aligned. In other words, it has been virtually impossible to carry in or discharge paper of various sizes to a large mounting table.

In view of the above, the present invention has been made in view of the above-described problems, and provides a paper transporting apparatus that can remarkably simplify the structure and can reliably transport various sizes of paper to a predetermined position. It is.

(Means for Solving the Problems) According to the present invention, a drive rotary shaft provided with an appropriate number of driven rollers and a driven rotary shaft provided with an appropriate number of driven rollers are installed in parallel with each other. A transport roller section that holds and arranges the distance between the axes so that the paper can be pressed and held by the driven roller and the driven roller, and a drive section that moves the entire transport roller section and appropriately rotates the drive rotation shaft. The drive unit is formed such that the movement of the entire transport roller unit and the rotation of the drive rotary shaft can be performed separately or in conjunction with each other, and the transport roller unit has a drive rotary shaft or a driven rotary shaft. Either one is formed so as to be rotatable with respect to the other while maintaining the inter-axis distance,
This rotation is appropriately performed by rotation control means.

(Effect) The paper transport device according to the present invention is configured such that the transport roller unit is sandwiched between an appropriate number of driving rollers and an appropriate number of driven rollers of a driving rotation shaft and a driven rotation shaft which are laid in parallel to drive the entire conveyance roller unit. The sheet is conveyed to a predetermined position by appropriately moving the sheet.

Then, by driving the driving roller in the discharge direction by the driving unit at that position, the paper is conveyed and discharged even if the paper has a different size.

In addition, one of the drive rotation shaft and the driven rotation shaft of the transport roller unit is rotated with respect to the other while maintaining the inter-axis distance, and then the drive roller rotates the drive roller in the discharge direction in the same manner as described above. Thus, the discharge direction is appropriately changed.

An embodiment of the present invention will be described below with reference to the drawings.

That is, the reference numeral 1 shown in the figure is a base frame which is arranged facing each other at an appropriate interval, and the transport roller unit 2 is moved between the base frames 1 and the transport roller unit 2 is moved or moved. A driving unit 3 for rotating is additionally provided.

The transport roller unit 2 lays a drive rotating shaft 12 provided with an appropriate number of driven rollers 11 and a driven rotating shaft 14 provided with an appropriate number of driven rollers 13 in parallel between the base frames 1. ,
The distance between these axes is adjusted by the driving roller 11 and the driven roller 13
Thus, the paper is held and arranged so that the paper can be pressed and held.

The drive section 3 is formed so as to move the entire transport roller section 2 and appropriately rotate the drive rotation shaft 12. The drive section 3 is formed so that the movement of the entire transport roller section 2 and the rotation of the drive rotation shaft can be performed separately or in conjunction with each other.

The specific structure of the transport roller unit 2 will be described.
The transport roller unit 2 has a cylindrical guide body 26 provided with a through hole in the center and is externally fitted to an extended end of the drive rotary shaft 12 so as to rotatably hold the drive rotary shaft 12 itself. A part of the peripheral surface of the guide body 26 is cut in parallel with the sliding groove 5 formed in the frame 1 so that the two surfaces formed are slid so that the sliding surface is movable in the direction of the sliding groove 5. It is formed in.

In addition, the transport roller unit 2 has one of the drive rotary shaft 12 and the driven rotary shaft 14 with respect to the other, and in the drawing, the driven rotary shaft 14 with respect to the drive rotary shaft 12
It is formed so as to be rotatable by the rotation control means 15 while keeping the distance between 12, 14.

The rotation control means 15 includes a driving rotary shaft 12 and a driven rotary shaft 14.
And a substantially triangular rotating plate 25 rotatably supported at a predetermined interval and a substantially oval rotating plate 25a disposed on the opposite side to the rotating plate 25. At least the rotating plate 25 is formed so as to swing toward the cam plate 30 by a swinging spring 27 attached to a rotating board 24 which is fixed to the guide body 26 and does not rotate. This cam plate 30
As shown in FIG. 4, the rotary plate 25 is formed integrally with the base frame 1 and, as shown in FIG. Copy pin
A cam groove 31 is formed so as to follow the pattern 29.

Further, the driven rotary shaft 14 is arranged so as to be spaced apart from the drive rotary shaft 12 by a small distance in the direction of the drive rotary shaft 12, and the driven rotary shaft 14 is provided with a pressing spring mounted on a rotary plate 25.
It is pressed in the direction of the drive rotary shaft 12 by the elastic force of 28. Thus, the sheet 4 can be held between the driven roller 11 and the driven roller 13.

On the other hand, as shown in FIG. 1, FIG. 4 to FIG. 6, the drive unit 3 extends both ends of the drive rotation shaft 12 so as to protrude outward from the base frame 1, and either end portion or either end thereof. One or both of the moving belt and the rotating belt passing through one end portion, in the drawing, a moving belt 16 and a rotating belt 17 are provided on one base frame 1 side, and the other is provided on the other side. On the base frame 1 side, only one transfer belt 16 is provided between the moving sections of the transport roller unit 2 one by one.

These belts 16 and 17 are transported by the transport roller unit 2.
Between the interlocking rollers 33 for rotation, and between the interlocking rollers 32 for movement, which are arranged at both ends of the moving section (the moving belt 16 is connected to the interlocking rollers 32 for 17 is wound around the interlocking rollers 33 for rotation. The interlocking roller 32 for movement and the interlocking roller 33 for rotation are arranged concentrically at respective positions.

A rotation motor 22 as a drive and rotation device is mounted below one base frame 1, and a movement motor 21 as a drive and rotation device is mounted on the other base frame 1.

The moving motor 21 is connected to one of the moving interlocking rollers 32 on the other side of the base frame 1 (the lower side in the figure) via a power transmission belt 35 so that the rotational force can be transmitted. The rotating motor 22 is driven by a rotating interlocking roller 33 that is arranged concentrically with one of the moving interlocking rollers 32 (the lower side in the figure) of the one base frame 1. The transmission belt 35 is connected so that the rotational force can be transmitted. The interlocking rollers for movement 32 at these positions are connected so as to be interlocked by an interlocking shaft 34, and the interlocking roller 33 for rotation is
And is formed so as not to be interlocked with the rotation of the moving interlocking roller 32 at all.

At both ends of the drive rotary shaft 12 through which the belts 16 and 17 pass, a mechanism for transmitting a moving force and a rotational force to the drive rotary shaft 12 is formed with the following structure.

That is, as shown in FIG. 4, a moving roller 18 and a rotating roller 19 are provided at both end portions or one end portion of the drive rotary shaft 12, in the drawing, outside one of the base frames 1.
However, only the transfer roller 18 is disposed on the other base frame 1 side. Then, the moving roller 18 and the rotating roller 19 are externally fitted to both end portions of the drive rotating shaft 12 that penetrates the substantially triangular moving substrate 23 disposed outside each base frame 1.

Moreover, the moving roller 18 is fixed to the moving substrate 23, and moves so that the driving rotary shaft 12 becomes rotatable by interposing a bush 37 between the moving roller 18 and the driving rotary shaft 12. The state that the roller 18 is fitted outside is ensured. This structure is the same at both ends of the drive rotary shaft 12.

Further, the rotation roller 19 is disposed only outside one of the base frames 1 and is fixed to the drive rotation shaft 12 by a set screw 36. The rotation of the rotation roller 19 causes the drive rotation shaft 19 to rotate.
12 is also formed to rotate together.

In the vicinity of the moving roller 18 and the rotating roller 19, the moving belt 1
6 and the rotation belt 17 (the movement belt 16 is in contact with the movement roller 18 and the rotation belt 17 is in contact with the rotation roller 19).
They are arranged as needed.

The transport device thus formed is operated, for example, as follows.

That is, as shown in FIG. 3, the end of the paper 4 sent at the upper portion is moved by the driving belt 11 by slightly moving the rotation belt 17 so that the end of the paper 4 is moved by the driving roller 11 and the driven roller 13. Hold it.

Next, the moving belt 16 is moved downward in the direction in which the transport roller unit is to be moved, as shown in the figure, and in conjunction with this, the rotating belt 17 is also moved downward. Then, a rotating force acts on the moving roller 18 against which the moving belt 16 is pressed. However, since the moving roller 18 is formed so as not to rotate, and is externally fitted with the drive rotary shaft 12 rotatable,
The transport roller unit 2 also moves from the upper part to the lower part together with the moving roller 16. At this time, moving the rotation belt 17 pressed against the rotation roller 19 is performed when the transport roller unit 2 moves with respect to the rotation belt 17 that does not move, and the rotation roller 19 rotates accordingly. Drive rotation axis
The rotation of the drive rotary shaft 12 can be performed without rotating the drive rotary shaft 12.

Also, after the sheet 4 has been conveyed to the lower part in the figure,
For example, when the sheet 4 is ejected after the direction is changed to the position of the end alignment unit 7 of the end alignment device 6 by arranging the cam groove 31 of the rotation control means 15 at that position. In other words, the driven rotary shaft 14 is rotated while keeping the center distance with respect to the drive rotary shaft 12 of the transport roller unit 2. After that, while the moving belt 16 is stopped by the driving unit 3, the rotating belt
When the roller 17 is moved, the rotation roller 19 rotates with the movement of the rotation belt 17, and the driving roller 11 and the driven roller
The paper 4 sandwiched between the papers 13 is sent out, and the paper 4 is appropriately fed to the edge alignment unit 7 of the edge alignment device 6 while changing the discharge direction.

After that, when the size of the paper 4 is large, even when the paper 4 reaches the edge alignment unit 7 of the edge alignment device 6, it is still driven by the driving roller.
For example, when the paper 4 is sandwiched between the driven roller 11 and the driven roller 13, the operation of moving the transport roller unit 2 while holding the paper 4 and the rotation of the drive rotary shaft 12 cause the driven roller 11 and the driven roller 11 to rotate. 13 and the operation of sending out the sheet 4 held therebetween is performed at the same time.
As the roller 11 and the driven roller 13 move upward, the paper 4
Must be sent out in the same position. In such a case, the direction of movement of each of the belts 16 and 17 is reversed, or the rotation belt 17 is stopped, and the movement of each of the belts 16 and 17 is relatively viewed. Operate to reverse direction. Thereby, the paper 4 can be sent out as it is at the same position as the main driving roller 11 and the driven roller 13 move upward.

Then, the moving belt 16 and the rotating belt 17 are
The movement control is performed by controlling the movement motor 21 and the rotation motor 22 by respective control devices (not shown).

The present invention relates to, for example, the arrangement and number of the moving belts 16 and the rotating belts 17, or the arrangement and number of the moving rollers 18 and the rotating rollers 19, the structure of the rotation control means 15, and various other types. It goes without saying that the structure and the like are not limited to the embodiments described above.

According to one embodiment of the sheet conveying device of the present invention, the driving unit 3 includes the moving belt 16 or the rotating belt 17 that passes through both end portions or one end portion of the drive rotary shaft 12.
Either one or both of them are erected between the moving sections of the transport roller unit 2 in an appropriate number, and at both end portions or at one end portion of the driving rotary shaft 12, the driving roller 18 is The roller for movement 18 is fitted so as to be rotatable and the roller for movement 18 itself cannot be rotated, and the roller for rotation 19 is fixed to the drive rotary shaft 12 and either or one of them is attached to rotate the roller for movement 18 In the vicinity of the transfer belt 19, the transfer belt 16 is attached to each of the rollers 18 and 19.
A tension roller 20 is appropriately disposed so that the belt 17 for rotation and the belt 17 for rotation are brought into contact with each other.
Are formed so as to be movable in the moving direction of the transport roller unit 2 individually or interlocked by driving rotation devices such as motors 21 and 22, and the movement of each of the belts 16 and 17 is individually or interlocked. When the transport roller unit 2 is moved while holding the paper 4 by forming the control unit and controlling the speed thereof by the control device,
First, the paper 4 is driven by the driving roller 11 and the driven roller 13.
And the moving belt 16 is moved in the direction in which the transport roller unit 2 is to be moved. Then, a rotating force acts on the moving roller 18 against which the moving belt 16 is pressed. However, this transfer roller 18
Since it is formed so as not to be rotatable and is externally fitted with the drive rotary shaft 12 rotatable, the moving roller
The transport roller unit 2 moves together with 18. At this time, since the rotating belt 17 pressed against the rotating roller 19 does not move, the rotating roller 19 fixed to the drive rotating shaft 12 is not moved.
Also moves with the movement of the drive rotation shaft 12. Then,
The rotation roller 19 rotates with the movement, and the drive rotation shaft
12 also rotates. Therefore, the rotation belt 17 is also moved together with the movement belt 16. Thereby, the drive rotary shaft 12 can move without rotating. Thus, the paper 4 can be moved as appropriate.

On the other hand, when the paper 4 sandwiched between the driving roller 11 and the driven roller 13 is sent out by the rotation of the driving rotary shaft 12, the rotating belt 17 is moved while the moving belt 16 is stopped. Then, the rotating belt
The rotation roller 19 rotates with the movement of the sheet 17, and the paper 4 held between the driven roller 11 and the driven roller 13
Can be sent out.

Further, the action of moving the transport roller unit 2 while holding the sheet 4 and the rotation of the drive rotation shaft 12 cause the sheet 4 held between the main driving roller 11 and the driven roller 13 to move.
When the action of sending out the
If the directions of the movements 16 and 17 are reversed or the movement speeds are appropriately changed, there is a difference between the relative movement and the rotation, and the movements can be performed simultaneously.

Therefore, since all kinds of movements of the paper 4 can be easily performed by a simple device, the cost and size of the device for handling this kind of paper 4 can be easily reduced.

The movement of each of the belts 16 and 17 can be performed by appropriately controlling the rotation speed of the drive rotation device by a control device (for example, a computer or the like). Since the pressure contact with the corresponding rollers 18 and 19 is performed by the tension roller 20, the operation is reliable, and an excellent device with very few malfunctions and failures can be provided.

(Effects of the Invention) The present invention configured as described above provides a drive rotary shaft 12 provided with an appropriate number of driven rollers 11 and an appropriate number of driven rollers
Along with the driven rotary shaft 14 on which the
The distance between the shafts 12 and 14 is set such that the paper 4 is held and pressed by the driving roller 11 and the driven roller 13 so that the paper 4 can be pressed and squeezed, and the entire conveyance roller 2 is moved. A drive unit 3 for appropriately rotating the drive rotary shaft 12, and the drive unit 3 is formed so that the movement of the entire transport roller unit 2 and the rotation of the drive rotary shaft 12 can be performed separately or in conjunction with each other. , The transport roller section 2
Is formed by rotatably holding one of the drive rotary shaft 12 and the driven rotary shaft 14 with respect to the other while maintaining the inter-axis distances 12, 14. The paper 4 is nipped by an appropriate number of main driving rollers 11 and an appropriate number of driven rollers 13 of a driving rotary shaft 12 and a driven rotary shaft 14, and the entire transport roller unit 2 is driven by a driving unit. By appropriately moving the sheet according to 3, it is possible to convey all sheets of various sizes to a predetermined position without having to arrange a large number of rollers as in the related art. Therefore, it is structurally very simple, and can solve the problems as when a large number of rollers are arranged as in the conventional example.

By rotating the driving roller 11 in the discharge direction by the drive unit 3 at that position, the paper 4 having a different size can be transported and discharged.

Further, the structure of the transport roller unit 2 is such that one of the driving rotation 12 and the driven rotation shaft 14 is
The discharge direction can be easily and appropriately changed by appropriately controlling the rotation by means of the rotation control means 15, while maintaining the distance between them so as to be rotatable. As a result, it is possible to easily mount the apparatus in correspondence with apparatuses for various uses, and it is a very excellent paper 4 transport apparatus.

[Brief description of the drawings]

1 is a perspective view, FIG. 2 is FIG. 3, FIG. 3 is a schematic diagram showing a moving state of a transport roller unit, and FIG. 4 is a cross-sectional view of a main part of a driving unit. FIG. 5 is FIG.
FIG. 6 is a view taken along a line VV in FIG.
7 is a view taken in the direction of arrows VII-VII in FIG. 4, and FIG. 8 is a view taken in the direction of arrows VIII-VIII in FIG. DESCRIPTION OF SYMBOLS 1 ... Base frame, 2 ... Conveying roller part, 3 ... Drive part, 4 ... Paper, 5 ... Sliding groove, 6 ... Edge alignment device, 7 ... Edge alignment part, 8 ...
Mounting table, 9: feed roller, 11: driving roller, 12: driving rotary shaft, 13: driven roller, 14: driven rotating shaft, 15: rotation control means, 16: moving belt, 17: rotating belt, 18
… Movement roller, 19… Rotation roller, 20… Tension roller, 21… Movement motor, 22… Rotation motor, 23… Movement substrate, 24… Rotation substrate, 25… Rotation plate, 25a…
Rotating plate, 26: guide body, 27: swing spring, 28: pressing spring, 29: copying pin, 30: cam plate, 31: cam groove, 32: interlocking roller for movement, 33: interlocking roller for rotation, 34 ... Interlocking shaft, 35 ... Power transmission belt, 36 ... Set screw,
37 ... Bush.

Claims (1)

(57) [Claims] A drive rotary shaft provided with an appropriate number of driven rollers and a driven rotary shaft provided with an appropriate number of driven rollers are installed in parallel with each other, and the distance between these shafts is determined by the drive roller and the driven roller. A transport roller unit that holds and arranges the paper so that the paper can be pressed and held by the driven roller, and a drive unit that moves the entire transport roller unit and appropriately rotates a drive rotation shaft. The movement of the entire roller unit and the driving of the rotation of the driving rotary shaft are formed so as to be able to be performed separately or in conjunction with each other, and the transport roller unit is configured such that one of the driving rotary shaft and the driven rotary shaft is moved relative to the other. A sheet conveying device characterized by being formed so as to be rotatable while maintaining the inter-axis distance, and the rotation is appropriately performed by a rotation control unit.