JPH083399Y2 - Sheet-shaped material conveying device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a sheet-shaped material conveying device such as a copying machine, a printer, a printing machine, and a FAX.

[Conventional technology]

FIG. 4 shows a side view of a conventional sheet-shaped material conveying device for paper or the like.

Reference numeral 71 denotes a conveying roller that rotates about an axis, and 72 denotes a conveying roller that is in pressure contact with the conveying roller 71 and that is driven by the rotation of the conveying roller 71. Reference numeral 74 is a conveyance path vertically arranged to convey a sheet (not shown), and is a conveyance roller.
Paper is conveyed by 71 and 72.

A conveying roller 73 is provided in pressure contact with the conveying roller 71, and the conveying path 74 is provided on the downstream side of the conveying rollers 71, 73.
A transport path 75 extending in the horizontal direction is arranged so as to join with.

Arrows A and B indicate the sheet conveyance direction to the sheet conveyance paths 75 and 74. The paper sent from the A direction is the transport path
After passing through 75 between the transport rollers 71 and 73 to merge with the transport path 74, they are directed to the B direction and sent to the transport rollers 71 and 72.

[Problems to be solved by the device]

In the sheet-shaped material conveying apparatus configured as described above, the contact paths 74 and 75 make a large angle, and when the sheets conveyed from the A direction contact the side wall of the conveying path 74 at the confluence position, the contact noise is generated. It was a cause of occurrence of jams.

An object of the present invention is to provide a sheet-like material conveying device that smoothly allows conveyance sheets to pass through a merging position.

[Means for solving the problem]

The present invention is directed to a first transport path for transporting a sheet-shaped body in one direction, the first transport path is merged with a relatively large angle, and the sheet-shaped body is directed to the first transport path. In the sheet-shaped member conveying device having a second conveying path for conveying the sheet and a guide member having two surfaces for forming the facing one surfaces of the first and the second conveying paths at the merging position, the guide is provided. In the member, a surface forming one surface of the first transport path is a substantially flat surface, and a surface forming one surface of the second transport path is a curved surface continuously inclined in the one direction, and There is a support shaft that is rotatable such that one of the first transport path and the second transport path is formed in accordance with the rotation direction, and the support shaft has a downstream end of the guide member at the first end. Provided at the center of gravity equilibrium position of the guide member located between the outer surfaces of the first and second conveyance paths, respectively. It is what is.

[Action]

According to the present invention, the guide member rotates about the support shaft, and one of the first feeding path and the second conveying path is formed depending on the rotation direction. When the sheet-like body is conveyed from the first conveying path, the first conveying path is formed, and the sheet-like body is
The sheet is conveyed in the direction 1 along the conveying path. Further, when the sheet-like body is conveyed from the second conveying path, the second conveying path is formed, and the sheet-like body moves while continuously changing its direction along the continuously inclined curved surface. Pass the confluence.

〔Example〕

FIG. 3 shows the internal structure of the copying machine main body 31 to which the sheet conveying apparatus according to the present invention is applied.

A contact glass 32 on which an original is placed is provided on the upper surface of the main body 31, and one side of the main body 31 includes transfer paper cassettes 33a and 33 that store transfer papers of different sizes.
The paper feed tray 34 for b and manual feeding is attached.

Inside the main body 31, the photoconductor drum 35 and its peripheral devices, from the upstream side, are the main charging device 36 and the blank lamp.
37, a main developing device 38, a transfer device 39, a cleaning device 40 and the like are provided, an optical system 41 for forming a document image on the photosensitive drum 35, and a fixing device for fixing the toner image after transfer. 42 are provided. Optical system 41 above
Is composed of an exposure lamp (not shown), mirrors 43a to 43g, and a lens 44.

As the transfer paper transport mechanism of this copying machine, the photosensitive drum
35, a paper feed mechanism 45 to the fixing device 42, a conveyor belt 46 to the fixing device 42, a reversing switching mechanism 47 that reverses the transfer paper conveyance path from the paper discharge side to the side for reverse feeding on the downstream side of the fixing device 42, paper feed A reverse feeding mechanism 48 for backward feeding the transfer sheet to the side, an intermediate tray 49 for temporarily keeping the transfer sheet, and a transport mechanism 50 for retransmitting the transfer sheet from the intermediate tray 49.

The paper feeding mechanism 45 is composed of sheet-shaped member conveying devices 51, 52a, 52b having transfer paths for feeding transfer paper from the transfer paper cassettes 33a, 33b and the paper feed tray 34, respectively, and a pair of registration rollers 53.

FIG. 1 shows a sheet-like material conveying device 52a (5
FIG. 2 is an enlarged view of a main part (same as 2b).

Reference numeral 1 is a transport roller that rotates about an axis, and 2 is a transport roller that is in pressure contact with the transport roller 1 and that is driven by the transport roller 1 to rotate. Reference numeral 4 denotes a transport path for transporting a transfer sheet (not shown), which is arranged in the vertical direction and is configured to be transported by the transport rollers 1 and 2. A conveying roller 3 is provided in pressure contact with the conveying roller 1, and a conveying path 5 from the horizontal direction is arranged so as to join with the conveying path 4 on the downstream side of the conveying rollers 1 and 3. . Arrows A and B indicate the transfer directions of the transfer paper to the transfer paths 4 and 5.

A guide member 6 is arranged at the confluence of the conveying paths 4 and 5. The guide member 6 is rotatable around a support shaft 7. The guide member 6 includes the left side surface 8 on the side of the conveyance path 4 and the conveyance path 5.
Has a right side surface 9 on the side, and a substantially planar left side surface 8 and a left side surface 10 of the conveying path 4 form a sheet guide passage 11. Further, the right side surface 9 is formed in a circular arc shape so as to follow the peripheral shape of the conveying roller 1, and the right side surface 9 and the lower surface of the conveying path 5 form a sheet guide passage 12. α
Indicates an angle at which the transfer sheet conveyed from the conveyance path 5 contacts the conveyance path 4. This angle α is considerably smaller than that of the conventional one, so that the transfer paper is easily conveyed through the sheet guide passage 12. When the guide member 6 rotates counterclockwise,
An arcuate concave portion is provided so as not to come into contact with the conveyance roller 3, and the tip of the left side surface 8 (right side surface 9) is installed in consideration of the center of gravity so as to hang in the middle of the conveyance paths 4 and 5 due to gravity. There is. The guide member 6 may hang down while forming one of the transport paths 4 and 5. The left side surface 8 is in contact with the conveyance path 4 or the right side surface 9 is in contact with the conveyance path 5 depending on the rotating direction of the guide member 6.

When the transfer sheet is conveyed along the conveyance path 4 from the direction B to the sheet conveying apparatus having such a configuration, the transfer sheet comes into contact with the guide member 6 at the merging position. Due to this contact, the guide member 6 rotates counterclockwise in the figure, and the right side surface 9 contacts the lower surface wall of the transport path 5. That is, the left side surface 8 that has blocked the passage of the transfer paper in the transport path 4 moves to the right, and the sheet guide path 11 of the transport path 4 is formed. The transfer sheet that has passed through the sheet guide passage 11 is conveyed as it is in the downstream direction after passing between the conveying rollers 1 and 2.

Next, when the transfer sheet is conveyed from the direction A along the conveyance path 5, the transfer sheet is conveyed to the sheet guide path 12 via the conveyance rollers 1 and 2. When the transfer sheet comes into contact with the right side surface 9 of the guide member 6, the contact force causes the guide member 6 to rotate clockwise in the drawing. Then, the leading end of the left side surface 8 abuts on the conveyance path 4 and the sheet guide path 12 of the conveyance path 5 is formed.

Therefore, the transfer sheet is conveyed in the sheet guide passage 12 along the curved surface of the right side surface 9 while being continuously oriented in the B direction. The transfer paper that has passed through the sheet guide passage 12 is a conveyance roller 1,
It is sent out in the downstream direction of the conveying path 4 after passing through 3 intervals.

FIG. 2 is a side cross-sectional view of the sheet-shaped material conveying device during the jam treatment. The left side surfaces of the transport roller 2 and the transport path 4 are configured to move integrally in the horizontal left direction. The guide member 6 and the transport roller 1 are exposed by this movement to the left.

In this state, when the left side surface 8 side of the guide member 6 is rotated clockwise around the support shaft 7, the jammed portion of the transfer paper is exposed and the jam can be easily removed.

Although the transport path 4 is set to the vertical direction in the embodiment, it is not limited to this. Further, the guide member 6 may be electrically switched.

[Effect of device]

As described above, according to the present invention, the guide member is
In the confluence position of the conveyance path and the second conveyance path, since a curved surface which is formed as a part of these conveyance paths, is rotatable to the confluence position upstream side, and is continuously inclined in the direction of 1, The sheet-like body can be smoothly directed to the downstream side. Further, the sheet-like body conveyed from the one direction easily passes through the merging position of the conveying path and is smoothly conveyed to the downstream side. Therefore, contact noise can be controlled, and stable sheet conveyance can be performed. In particular, since the rotation support shaft is provided at the center of gravity equilibrium position of the guide member in which the downstream end of the guide member is located between the outer surfaces of the first and second conveyance paths, respectively, The contact noise can be further suppressed, and the sheet-like body can be smoothly conveyed.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of a sheet conveying apparatus according to the present invention, FIG. 2 is a side sectional view for explaining jam processing, and FIG. 3 is an outline of a copying machine to which the present invention is applied. Diagram,
FIG. 4 shows a conventional sheet conveying apparatus. 1,2,3 ... conveying rollers, 4,5 ... conveying paths, 6 ... guide members, 7 ...
Support shaft, 8 ... Left side, 9 ... Right side, 11, 12 ... Seat guide passage

Claims (1)

[Scope of utility model registration request] 1. A first transport path for transporting a sheet-like body in one direction, and the sheet-like body is joined to the first transport path with a relatively large angle. In the sheet-shaped member conveying device having a second conveying path for conveying toward each other, and a guide member having two surfaces for forming respective facing one surfaces of the first and second conveying paths at the merging position, In the guide member, a surface forming one surface of the first transport path is formed of a substantially flat surface, and a surface forming one surface of the second transport path is formed of a curved surface continuously inclined in the one direction, In addition, there is a support shaft that is rotatable so that one of the first transfer path and the second transfer path is formed in accordance with the rotation direction, and the support shaft has the downstream end of the guide member. It is provided at the center of gravity equilibrium position of the guide member located between the outer surfaces of the first and second conveying paths. Sheet product conveying apparatus characterized by being.