JP5834575B2 - Recording material processing equipment - Google Patents

Description

  The present invention relates to a recording material processing apparatus.

  2. Description of the Related Art A paper supply device is known in which a supply belt and two rollers around which the supply belt is wound are unitized to form a supply unit, and the supply unit swings about the axis of one roller (for example, Patent Document 1).

JP 2005-112549 A

  An object of the present invention is to provide a recording material processing apparatus in which displacement of a cover member relative to the cam is less likely to occur when an external force is applied to the cover member that covers the cam used to move the conveying member.

According to the first aspect of the present invention, the recording material transported in one direction is stacked, a recording material bundle generating unit that generates a recording material bundle, and the recording generated by the recording material bundle generating unit A conveying member used for conveying the material bundle, and when the recording material bundle is generated in the recording material bundle generating unit, a conveying member retracted from the recording material bundle generating unit ; An advancing / retreating member attached to the conveying member and capable of advancing / retreating with respect to the recording material bundle generating unit; a cam for moving the advancing / retreating member relative to the recording material bundle generating unit; and a cam support shaft for supporting the cam. , And by rotating the cam, the advancing / retreating member is advanced / retracted with respect to the recording material bundle generating unit, the movement of the conveying member toward the recording material bundle generating unit, and the recording material bundle generating unit Mobile device for moving the conveying member in a direction away from When being fixed to the cam support shaft for supporting the cam, a cover member for covering the cam has an opening on the recording medium bundle generator side, and a cover member having a rim portion surrounding the opening When the conveying member is retracted from the recording material bundle generating unit, the conveying member enters the inside of the covering member through the opening, and the conveying member of the edge portion The part located on the downstream side in the one direction from the recording material bundle generation unit rather than the end on the recording material bundle generation unit side of the conveying member retracted from the recording material bundle generation unit. The recording material processing apparatus is located at a remote location .

According to a second aspect of the present invention, there is provided a recording material bundle generating unit for generating a recording material bundle, a conveying member used for conveying the recording material bundle generated by the recording material bundle generating unit, and the conveying member. An advancing / retreating member to which the member is attached and capable of advancing / retreating with respect to the recording material bundle generating unit; a cam for moving the advancing / retreating member relative to the recording material bundle generating unit; and a cam support shaft for supporting the cam; By rotating the cam, the advance / retreat member moves forward / backward with respect to the recording material bundle generation unit, and the conveyance member moves toward the recording material bundle generation unit and moves away from the recording material bundle generation unit. A moving mechanism for moving the conveying member, and a covering member that covers the cam, and is not fixed to the advance / retreat member and the conveying member, and is fixed to the cam support shaft, There is an opening on the recording material bundle generator side, and the opening The reciprocating member and the conveying member is a recording material processing apparatus comprising a cover member, the in and out of the cover member through.
According to a third aspect of the present invention, the advance / retreat member swings around a predetermined axis to advance / retreat with respect to the recording material bundle generation unit, and the cover member swings the advance / retreat member. 3. The recording material processing apparatus according to claim 1, wherein the recording material processing apparatus is fixed also to the shaft serving as a center of oscillation at the time.
The invention according to claim 4 further includes a coil spring that biases the advance / retreat member toward the cam, wherein one end of the coil spring is fixed to the advance / retreat member, and the other end of the coil spring is 4. The recording material processing apparatus according to claim 1, wherein the recording material processing apparatus is fixed to a covering member.
The invention according to claim 5 is characterized in that the cam and the coil spring are arranged in one of the one region and the other region facing each other across the advance / retreat member. Item 4. The recording material processing apparatus according to Item 4 .
Invention of claim 6, the recording material processing according to any one of claims 1 to 5, characterized in that covered by the site to be pressed also the cover member by the cam of said reciprocating members Device.

According to the seventh aspect of the invention, a recording material bundle generation unit in which recording materials conveyed in one direction are stacked and a recording material bundle is generated, and a recording generated by the recording material bundle generation unit A conveying member used for conveying the material bundle, and when the recording material bundle is generated in the recording material bundle generating unit, a conveying member retracted from the recording material bundle generating unit ; A swinging member attached to the conveying member and swingable about a predetermined axis; and a cam for swinging the swinging member, and rotating the cam to rotate the swinging member. A moving mechanism that swings the moving member to move the conveying member toward the recording material bundle generating unit and move the conveying member in a direction away from the recording material bundle generating unit; A cover that covers the cam and is fixed to the shaft that is the center of swing when the member swings. A member having an opening to said recording material bundle generator side, and a cover member having a rim portion surrounding the opening, the recording material wherein the transport member from the bundle generator is retracted At this time, the conveying member enters the inside of the covering member through the opening, and a portion of the edge portion that is located downstream of the conveying member in the one direction is the recording material bundle generating unit. The recording material processing apparatus is located at a position farther from the recording material bundle generation unit than the end of the conveying member retracted from the recording material bundle generation unit side .
According to an eighth aspect of the present invention, there is provided a recording material bundle generating unit for generating a recording material bundle, a conveying member used for conveying the recording material bundle generated by the recording material bundle generating unit, and the conveying member. A swinging member provided with a member and swingable about a predetermined axis; and a cam for swinging the swinging member, and rotating the cam to A moving mechanism that swings and moves the conveying member toward the recording material bundle generating unit and moves the conveying member in a direction away from the recording material bundle generating unit, and a covering member that covers the cam The fixing member is not fixed to the swinging member and the conveying member, and is fixed to the shaft serving as a swing center when the swinging member swings, and the recording material bundle generating unit An opening on the side, through which the swinging member and the conveying member A cover member into and out of the covering member is a recording material processing apparatus including the.
The invention according to claim 9, further comprising a cam supporting shaft for supporting the cam, said cover member, according to claim 7 or 8, characterized in that it is fixed against the cam supporting shaft A recording material processing apparatus.

According to the present invention, the displacement of the cover member difficulty rather occurs relative to the cam when the external force acts on the covering member for covering a cam used in the movement of the conveying member, was further fed in one direction recording It is possible to provide a recording material processing apparatus in which the material is less likely to be caught by the edge of the covering member .
According to the second aspect of the present invention, it is possible to provide a recording material processing apparatus in which displacement of the cover member relative to the cam is less likely to occur when an external force is applied to the cover member that covers the cam used to move the conveying member.
According to the invention of claim 3 , it is possible to further prevent displacement of the covering member.
According to invention of Claim 4 , it becomes possible to suppress that the advancing / retreating member leaves | separates from a cam, or the contact pressure of a cam and advancing / retreating member becomes more than a predetermined contact pressure.
According to invention of Claim 5 , compared with the case where a cam is arrange | positioned in one area | region among one area | region and the other area | region which oppose on both sides of an advancing / retreating member, and a coil spring is arrange | positioned in the other area | region. Can be reduced in size.
According to the sixth aspect of the present invention, it is possible to make it difficult for the user to access the portion of the advance / retreat member that is pressed by the cam.
According to the invention of claim 7, the displacement of the cover member difficulty rather occurs relative to the cam when the external force acts on the covering member for covering a cam used in the movement of the conveying member, was further fed in one direction recording It is possible to provide a recording material processing apparatus in which the material is less likely to be caught by the edge of the covering member .
According to the eighth aspect of the present invention, it is possible to provide a recording material processing apparatus in which displacement of the cover member relative to the cam is less likely to occur when an external force is applied to the cover member that covers the cam used to move the conveying member.
According to the ninth aspect of the present invention, it is possible to further prevent displacement of the covering member.

1 is a diagram illustrating an overall configuration of a sheet processing system to which the exemplary embodiment is applied. It is the perspective view which showed the structure of the periphery of a press roll. It is a figure at the time of seeing the advancing / retreating mechanism from the arrow III direction of FIG. It is a figure at the time of seeing the advance / retreat mechanism from the arrow IV direction of FIG. It is the figure which showed the other structural example of the advance / retreat mechanism. It is a figure at the time of seeing an advance / retreat mechanism from upper direction. FIG. 6 is a perspective view when the advance / retreat mechanism is viewed from the upstream side in the discharge direction of the sheet bundle.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a diagram illustrating an overall configuration of a sheet processing system 1 to which the exemplary embodiment is applied.
A sheet processing system 1 shown in FIG. 1 is preliminarily applied to an image forming apparatus 2 such as a printer or a copying machine that forms a color image by an electrophotographic method, and a sheet P on which a toner image is formed by the image forming apparatus 2 in advance. And a sheet processing device 4 for performing a predetermined process.

  Here, the image forming apparatus 2 is provided with an image forming apparatus main body 2A. Further, the image forming apparatus 2 includes a liquid crystal display, and is provided with a UI (User Interface) that displays information to the user and receives an instruction (input) from the user. Further, the image forming apparatus 2 includes an image forming unit (not shown) that forms, for example, a toner image on a sheet P as an example of a recording material, inside the image forming apparatus main body 2A.

  Further, the image forming apparatus 2 includes a drive source such as a motor, and conveys the paper P to the image forming unit, and the paper P on which an image is formed in the image forming unit to the paper processing device 4. A paper transport mechanism (not shown) for transporting (outputting) is provided. Further, the image forming apparatus 2 is provided with a control unit 2C that controls the image forming unit, the sheet transport mechanism, the UI, and the like in the image forming apparatus main body 2A.

  On the other hand, a sheet processing apparatus 4 as an example of a recording material processing apparatus is provided with an apparatus main body (apparatus main body) 41 having four side surfaces arranged vertically and formed in a rectangular parallelepiped shape. Further, the paper processing device 4 is provided with a punching unit 42 for punching (punching) the paper P. Further, an end binding unit 43 is provided that generates a sheet bundle (recording material bundle) composed of a plurality of sheets P and binds the end of the generated sheet bundle using staples.

  Further, the sheet processing apparatus 4 is provided with a control unit 100 that is communicable with the control unit 2 </ b> C in the image forming apparatus 2 and controls the entire sheet processing apparatus 4. In addition, the sheet processing apparatus 4 is provided with a sheet bundle stacking unit 45 that is attached to the side surface of the apparatus main body 41, performs the binding process by the end binding unit 43, and stacks the sheet bundle discharged through the opening 411. Yes. In this embodiment, the sheet bundle stacking unit 45 is lowered as the sheet bundle is stacked on the sheet bundle stacking unit 45.

  Further, the paper processing device 4 is provided at the upper portion of the apparatus main body 41 and above the end binding portion 43, and is punched by the paper P that is not processed by the paper processing device 4 or the punching unit 42. There is provided an upper stacking unit 46 on which the sheets P subjected to the above are stacked. Further, in the present embodiment, the first paper transport path R1 through which the paper P transported toward the end binding section 43 passes, and is transported toward the upper stacking section 46, which is branched from the first paper transport path R1. A second paper transport path R2 through which the paper P to be passed passes is provided.

  Here, the end binding unit 43 includes a compiling unit 431 configured by a plate-like member and collecting and storing a plurality of sheets P. In addition, the paper P that is sequentially transported along the first paper transport path R <b> 1 is sent to the end binding unit 43 in one direction (rightward in the drawing), so that the paper P is stacked on the compiling unit 431. In addition, an exit roll 432 that functions as a generation unit that generates a bundle of sheets is provided on the compiling unit 431. The exit roll 432 is composed of a roll pair. Further, the end binding unit 43 includes a first paddle 437 and a second paddle 437 for moving the paper P discharged to the compiling unit 431 as an example of the recording material bundle generating unit toward the end guide 431A of the compiling unit 431. A paddle 438 is provided.

  Here, the first paddle 437 and the second paddle 438 are driven to rotate in the clockwise direction in the drawing, and the sheet P sent to the compiling unit 431 by the exit roll 432 is directed to the end guide 431A of the compiling unit 431. To move. Here, the first paddle 437 and the second paddle 438 are configured by a rotation shaft disposed along a direction orthogonal to the conveyance direction of the paper P and a plurality of elastic pieces provided so as to protrude from the rotation shaft. Has been. Further, the end binding unit 43 of the present embodiment is provided with an end binding stapler 435 that binds the end of the sheet bundle that is accommodated in the compiling unit 431 and subjected to the alignment process by the end guide 431A of the compiling unit 431.

  Further, the end binding unit 43 is provided with an eject roll 433 that transports the sheet bundle subjected to the binding process by the end binding stapler 435 to the sheet bundle stacking unit 45 through the opening 411. Further, the eject roll 433 is provided so as to be able to advance and retreat. When the eject roll 433 discharges the sheet bundle, the eject roll 433 advances toward the eject roll 433 and presses the sheet bundle. Further, a pressing roll 436 is provided that conveys the sheet bundle to the sheet bundle stacking unit 45 together with the eject roll 433.

  Here, in this embodiment, as described above, the pressing roll 436 is provided so as to be able to advance and retreat with respect to the ejecting roll 433, and when the sheet bundle is discharged by the ejecting roll 433, the pressing roll 436 is ejected from the ejecting roll 433. The sheet bundle is sandwiched between the pressing roll 436 and the eject roll 433. Next, the eject roll 433 is rotated, and the sheet bundle is discharged. On the other hand, when the paper P is discharged (stacked) to the compiling unit 431, the pressing roll 436 is arranged at the upper side in the drawing so as not to restrict the movement of the paper P discharged to the compiling unit 431. And is disposed at a location away from the eject roll 433.

FIG. 2 is a perspective view showing a configuration around the pressing roll 436. 2A is a perspective view, and FIG. 2B is a view when a cover member 540 (described later) is viewed from the direction of arrow IIb in FIG. 2A.
In this embodiment, as shown to the same figure (a), the advancing / retreating mechanism 500 which advances / retreats the press roll 436 with respect to the eject roll 433 (not shown in FIG. 2) is provided.
Here, the advancing / retreating mechanism 500 as an example of the moving mechanism is disposed along a direction orthogonal to the discharge direction of the sheet bundle (the discharge direction when the eject roll 433 discharges the sheet bundle), and the conveyance member A support shaft 510 that supports a pressing roll 436 as an example in a rotatable state is provided. In this embodiment, two pressing rolls 436 are provided, and the support shaft 510 supports the two pressing rolls 436.

  Further, the advance / retreat mechanism 500 is provided above the compiling unit 431 (see FIG. 1), and has one end 521 on the upstream side in the sheet bundle discharging direction and the other end 522 on the downstream side in the sheet bundle discharging direction. A swing arm 520 that swings (rotates) about the one end 521 is provided. In other words, a swing arm 520 that moves back and forth with respect to the compiling unit 431 by swinging around one end 521 is provided. Here, in the present embodiment, the support shaft 510 is attached to the other end 522 of the swing arm 520, and the press roll 436 is ejected when the swing arm 520 swings about the one end 521. It moves forward and backward with respect to the roll 433 (see FIG. 1).

  Further, the advance / retreat mechanism 500 is disposed along a direction orthogonal to the sheet bundle discharge direction, supports the one end 521 of the swing arm 520 as an example of the advance / retreat member and the swing member, and swing arm 520. A first shaft (shaft) 531 is provided as a swing center when the is swinging. The first shaft 531 is rotationally driven by a motor (not shown). The first shaft 531 is connected to the second paddle 438 (see FIG. 1) via a driving force transmission mechanism (not shown) and has a function of rotating the second paddle 438.

  In this embodiment, a cam 533 is provided above the swing arm 520 and between one end 521 and the other end 522 of the swing arm 520 to press the swing arm 520 downward. Further, in the present embodiment, a second shaft (axis) 532 is provided that is disposed along a direction orthogonal to the sheet bundle discharge direction and supports the cam 533 and rotates the cam 533.

  The advance / retreat mechanism 500 is provided with a cover member 540 that is disposed above the swing arm 520 and disposed above the cam 533 and covers the cam 533. In this embodiment, not only the cam 533 but also the portion of the swing arm 520 that is pressed by the cam 533 (the upper surface 523 of the swing arm 520) is covered by the covering member 540. In the present embodiment, as a result of the cover member 540 being provided in this way, it is difficult for the user to access the cam 533.

  Furthermore, the advance / retreat mechanism 500 of this embodiment is provided with a coil spring 550 that pulls the swing arm 520 upward in the drawing and presses the swing arm 520 against the cam 533. Here, the coil spring 550 is accommodated in the cover member 540, one end is fixed to the swing arm 520, and the other end is fixed to the cover member 540.

  Here, the swing arm 520 will be described in detail. The swing arm 520 of the present embodiment is formed in a box shape (cuboid shape) and has an upper surface 523 that is pressed by a cam 533. In addition, the swing arm 520 has a first side surface 524 on the downstream side in the sheet bundle discharge direction. Here, the first side surface 524 is arranged along the vertical direction in the drawing and along the direction orthogonal to the discharge direction of the sheet bundle. In addition, the swing arm 520 is provided with a second side surface 525 that is disposed along the vertical direction in the drawing and extends in the discharge direction of the sheet bundle. Further, a third side surface 526 is provided on the opposite side of the second side surface 525.

  Next, the covering member 540 will be described. In the present embodiment, the cover member 540 is also formed in a box shape like the swing arm 520. Here, the cover member 540 of the present embodiment is provided with a first side plate 541 that is positioned on the downstream side in the sheet bundle discharge direction and extends in a direction perpendicular to the sheet bundle discharge direction. The covering member 540 is provided with a second side plate 542 that is disposed along the sheet bundle discharge direction and is disposed along the vertical direction in the drawing.

  Further, the covering member 540 is provided with a third side plate 543 that is disposed at a position opposite to the second side plate 542, is disposed along the sheet bundle discharge direction, and is disposed along the vertical direction in the drawing. Yes. Further, the covering member 540 has a top plate 544 at a location corresponding to the ceiling and above the cam 533. The first side plate 541 to the third side plate 543 are connected to the edge portion of the upper plate 544 and are arranged to face downward from the connection portion with the upper plate 544.

  In addition, the member is not provided in the location corresponding to the lower surface (bottom part) of the cover member 540, and the location corresponding to this lower surface is open | released. In addition, a rectangular opening is formed at a location corresponding to the lower surface of the covering member 540. Thus, in this embodiment, the swing arm 520 can enter the cover member 540 (details will be described later). In the present embodiment, the first side surface 524 of the swing arm 520 is positioned on the inner side of the first side plate 541 of the covering member 540. Further, the second side surface 525 of the swing arm 520 is located on the inner side of the second side plate 542 of the covering member 540. Further, the third side surface 526 of the swing arm 520 is located on the inner side of the third side plate 543 of the covering member 540.

  Although not described above, FIG. 2A shows a state where the cam 533 is located at the bottom dead center and the swing arm 520 is lowered most downward. In other words, the pressing roll 436 advances toward the eject roll 433 (see FIG. 1), and the pressing roll 436 is pressed against the sheet bundle.

  Here, in the present embodiment, even if the swing arm 520 is lowered, as shown in FIG. 2 (b), the first side plate 541 and the first side surface 524 are in the height direction in the figure. It is supposed to overlap. In the present embodiment, the overlap amount (overlap amount) between the first side plate 541 and the first side surface 524 is 3 mm or more. In addition, in FIG. 2B, the length indicated by the symbol L1 is 3 mm or more.

  Further, as shown in FIG. 2A, a portion (a portion indicated by reference numeral 2 </ b> A in the drawing) of the second side surface 525 of the swing arm 520 that is located downstream in the sheet bundle discharge direction, and a covering member 540. There is also an overlap with the second side plate 542. Similarly, there is also an overlap between a portion of the third side surface 526 of the swing arm 520 that is located downstream in the sheet bundle discharge direction and the third side plate 543 of the cover member 540. For this reason, in this embodiment, even if the swing arm 520 is positioned at the lowest point and the swing arm 520 and the cover member 540 are farthest apart, the user is less likely to access the cam 533. ing.

  In addition, between the second side surface 525 of the swing arm 520 and the second side plate 542 of the covering member 540 and the portion located upstream in the sheet bundle discharge direction (the portion indicated by reference numeral 2B in the drawing). Although a gap is generated, the dimension of the gap is a dimension that is difficult for the user's hand to pass. Similarly, in the present embodiment, between the portion of the third side surface 526 of the swing arm 520 located on the upstream side in the sheet bundle discharge direction and the third side plate 543 of the covering member 540, Although a gap is generated, the dimension of the gap is also a dimension that is difficult for the user's hand to pass.

  Further, in the present embodiment, a gap is formed between the first side plate 541 and the first side surface 524 in the sheet bundle discharge direction, but the size of this gap is also set to a small value. In addition, gaps are formed between the second side plate 542 and the second side surface 525 and between the third side plate 543 and the third side surface 526 in a direction orthogonal to the sheet bundle discharge direction. The dimension of the gap is also set to a small value. Here, the dimension of the gap between the first side plate 541 and the first side surface 524 (see reference numeral L2 in FIG. 4) is 5 mm or less. In addition, the dimension of the gap between the second side plate 542 and the second side surface 525 (see reference numeral L3 in FIG. 2B) is also 5 mm or less. Furthermore, although illustration is omitted, the dimension of the gap between the third side plate 543 and the third side surface 526 is also 5 mm or less.

  In the present embodiment, the cover member 540 and the swing arm 520 are arranged as described above. As a result, the inner surface of the cover member 540 and the outer surface of the swing arm 520 come close to each other, and the cam located inside the cover member 540 User access to 533 is less likely to occur. Further, in this embodiment, since the inner surface of the cover member 540 and the outer surface of the swing arm 520 are brought close to each other, the size of the cover member 540 in the paper bundle discharge direction and the cover member in the direction orthogonal to the paper bundle discharge direction The dimension of 540 becomes small. In this case, the paper processing device 4 can be downsized. In the configuration of the present embodiment, since the cam 533 is covered by the covering member 540, noise generated by driving the cam 533 is reduced.

  Here, from the state shown in FIG. 2A, when the second shaft 532 as an example of the cam support shaft rotates and the cam 533 rotates, the swing arm 520 is pulled upward by the coil spring 550 and the swing arm. 520 rotates around the first shaft 531. As a result, the pressing roll 436 moves in a direction away from the eject roll 433 (see FIG. 1), and the pressing roll 436 is separated from the eject roll 433.

  In the present embodiment, as described above, in the height direction, a portion of the second side surface 525 of the swing arm 520 located on the upstream side in the sheet bundle discharge direction (a portion indicated by reference numeral 2B). A gap is formed between the cover member 540 and the second side plate 542. In addition, a gap is also generated between a portion of the third side surface 526 of the swing arm 520 located on the upstream side in the sheet bundle discharge direction and the third side plate 543 of the cover member 540. Here, this gap can be reduced by extending the second side plate 542 and the third side plate 543 of the covering member 540 in the downward direction in FIG. When the gap is reduced, the user access to the cam 533 is less likely to occur.

  By the way, when the second side plate 542 and the third side plate 543 are extended downward in the configuration of the present embodiment, the swing arm 520 is rotated and the swing arm 520 enters the cover member 540. At this time, the lower ends of the second side plate 542 and the third side plate 543 in the drawing may protrude below the lower end of the swing arm 520 (the lower end of the second side surface 525 and the lower end of the third side surface 526). In this case, the sheet P conveyed by the exit roll 432 (see FIG. 1) may be caught on the portion of the second side plate 542 and the third side plate 543 that protrudes from the lower end of the swing arm 520. For this reason, in this embodiment, in order not to produce a protrusion part, the 2nd side board 542 and the 3rd side board 543 are not extended below the necessity more.

  Although not described above, the covering member 540 is fixed to the first shaft 531 and the second shaft 532. In addition, in the present embodiment, since the first shaft 531 and the second shaft 532 are rotationally driven, between the first shaft 531 and the covering member 540 and between the second shaft 532 and the covering member 540. , A bearing 560 is provided. In the present embodiment, the covering member 540 is fixed to the first shaft 531 and the second shaft 532 via the bearing 560. More specifically, in the present embodiment, the covering member 540 is fitted to the bearing 560 attached to the first shaft 531 and the second shaft 532, so that the covering member is attached to the first shaft 531 and the second shaft 532. 540 is in a fixed state.

  In the present embodiment, the covering member 540 is fixed in such a manner that the covering member 540 covers the first shaft 531 and the second shaft 532 from above in the drawing. In the present embodiment, as shown in FIG. 2A, the covering member 540 is provided with a protruding piece 545 (details will be described later), and the protruding piece 545 is fixed to the first shaft 531. In the present embodiment, the second side plate 542 and the third side plate 543 of the covering member 540 are fixed to the second shaft 532. In addition, in the present embodiment, the covering member 540 is fixed to the main body side of the sheet processing apparatus 4 at a total of three locations. In the present embodiment, a groove (notch) is formed in the protruding piece 545, the second side plate 542, and the third side plate 543, and the first shaft 531 and the second shaft 532 are inserted into the groove. It has become.

  By the way, in this embodiment, the cover member 540 is fixed to the first shaft 531 and the second shaft 532. However, the cover member 540 is fixed to the lower surface of the upper stacking portion 46 shown in FIG. You can also. Incidentally, in this case, the number of parts arranged between the upper stacking portion 46 to which the covering member 540 is fixed and the swing arm 520 is increased as compared with the configuration described in FIG. .

  Here, when the number of parts increases in this way, the upper stacking portion 46 to which the covering member 540 is fixed is moved away from the swing arm 520 from the position assumed in advance due to accumulation of errors of the respective members. It can happen to be located on the side. In this case, the swing arm 520 and the cover member 540 are separated from each other, and the user can easily access the cam 533.

  In addition, when the cover member 540 is fixed to the upper stacking portion 46, the distance between the upper stacking portion 46 and the swing arm 520 is increased, so that the dimensions of the cover member 540 are larger than the configuration described in FIG. Need to be increased. By the way, when the dimensions are increased in this way, the first side plate 541 to the third side plate 543 are lengthened, and the first side plate 541 to the third side plate 543 are easily bent. And if the 1st side board 541-the 3rd side board 543 become easy to bend, it will become easy to produce the deformation of the covering member 540, and it will become easy to produce the user's access to the cam 533.

  For this reason, in the present embodiment, the cover member 540 is fixed not to the upper stacking portion 46 but to a member positioned closer to the swing arm 520 than the upper stacking portion 46. Specifically, as described above, the covering member 540 is fixed to the first shaft 531 and the second shaft 532.

  In this case, the number of parts arranged between the first shaft 531 and the second shaft 532 to which the covering member 540 is fixed and the swing arm 520 is reduced, resulting from accumulation of errors of each part. The variation (positional deviation) of the position of the covering member 540 is less likely to occur. In this case, the covering member 540 is arranged at a predetermined position, and the user does not easily access the cam 533. Further, when the cover member 540 is fixed to a member located closer to the swing arm 520 than the upper stacking portion 46, the cover member 540 is reduced and the rigidity of the cover member 540 is increased. In this case, the covering member 540 is hardly deformed, and the user does not easily access the cam 533.

  In the above description, the cover member 540 is fixed to both the first shaft 531 and the second shaft 532. However, the cover member 540 is fixed to either the first shaft 531 or the second shaft 532. May be. As described above, even when the cover member 540 is fixed to one of the first shaft 531 and the second shaft 532, the swing arm 520 and the cover member 540 are compared to the case where the cover member 540 is fixed to the upper stacking portion 46. The number of parts arranged between the two is reduced, the rigidity of the covering member 540 is increased, and the user is less likely to access the cam 533.

  Next, the coil spring 550 will be described. In the present embodiment, as described above, the coil spring 550 is accommodated in the cover member 540, and the coil spring 550 has one end fixed to the swing arm 520 and the other end connected to the cover member 540. It is fixed. Here, in the present embodiment, the other end of the coil spring 550 is fixed to the covering member 540, but this other end can be fixed to the upper stacking portion 46, for example. By the way, when the other end of the coil spring 550 is fixed to the upper stacking portion 46 in this way, the swing arm 520 is separated from the cam 533, or the contact pressure between the swing arm 520 and the cam 533 becomes too large. Can happen.

  More specifically, as described above, the upper stacking portion 46 is located on the side farther from the swing arm 520 than the position assumed in advance due to the accumulated error of each member or the like. The position may be closer to the swing arm 520 than the assumed position, and the position of the swing arm 520 is likely to fluctuate. Under such circumstances, if the coil spring 550 is fixed to the upper stacking portion 46, the swing arm 520 may move away from the cam 533 or swing according to the change in the position of the upper stacking portion 46. It is possible that the contact pressure between the arm 520 and the cam 533 becomes too large.

  For this reason, in the present embodiment, the other end of the coil spring 550 is fixed to the covering member 540 located closer to the swing arm 520. In other words, a configuration in which the other end of the coil spring 550 is fixed to the covering member 540 so that the number of parts interposed between the portion where the other end of the coil spring 550 is fixed and the swing arm 520 is reduced. It is said.

  FIG. 3 is a view when the advance / retreat mechanism 500 is viewed from the direction of arrow III in FIG. In this figure, the swing arm 520 (see FIG. 2) is retracted upward, and the pressing roll 436 enters the inside of the covering member 540 through the opening formed in the lower portion of the covering member 540. . In FIG. 3, the swing arm 520 is not shown. 3 also shows an exit roll 432 (see FIG. 1) located upstream of the advance / retreat mechanism 500 in the transport direction of the paper P. Specifically, one exit roll 432 disposed below the pair of exit rolls 432 disposed above and below is illustrated.

  Here, in the present embodiment, the lower edge portion of the first side plate 541 provided in the covering member 540 in the drawing is disposed above the lower edge portion of the second side plate 542 and the lower edge portion of the third side plate 543. Yes. In addition, the dimension in the height direction of the first side plate 541 is made smaller than the dimension in the height direction of the second side plate 542 and the dimension in the height direction of the third side plate 543.

  More specifically, in the present embodiment, when the cover member 540 is viewed from below in the drawing, the cover member 540 is provided with a rectangular edge portion 549 surrounding an opening provided in the lower portion of the cover member 540. . In this embodiment, a portion (a portion indicated by reference numeral 3 </ b> A) of the edge portion 549 located on the downstream side of the pressing roll 436 (the downstream side in the feeding direction when the exit roll 432 sends out the paper P). Of the pressing roll 436, the pressing roll 436 is positioned above the end 436 </ b> A positioned on the compiling unit 431 (see FIG. 1) side. In other words, a portion of the edge portion 549 that is located on the downstream side of the pressing roll 436 is located on the side farther from the compiling portion 431 (see FIG. 1) than the end portion 436A of the pressing roll 436.

  Here, in the paper processing apparatus 4, in order to improve the straight running stability of the paper P when the paper P is discharged to the compiling unit 431, as shown in FIG. The diameter may be increased, and a protruding portion 432A protruding in the radial direction of the exit roll 432 may be provided at the central portion in the thickness direction of the exit roll 432. In this case, as shown in the figure, a waveform shape is imparted to the paper P, and the straight running stability of the paper P is increased.

  By the way, when the corrugated shape is imparted to the paper P in this way, a portion of the paper P that protrudes toward the covering member 540 side easily comes into contact with the first side plate 541. For this reason, in the present embodiment, as described above, the lower edge portion of the first side plate 541 is disposed above the lower edge portion of the second side plate 542 and the lower edge portion of the third side plate 543. Further, a portion of the edge portion 549 of the covering member 540 that is located downstream of the pressing roll 436 is disposed above the end portion 436A of the pressing roll 436 that is positioned on the compiling portion 431 side. Yes. In this case, the sheet P is less likely to hit the first side plate 541.

FIG. 4 is a view when the advance / retreat mechanism 500 is viewed from the direction of arrow IV in FIG.
Although not described above, in the advance / retreat mechanism 500 of the present embodiment, a part of the upper surface 523 of the swing arm 520 moves forward and backward with respect to the bottom 527 of the swing arm 520. In addition, in this embodiment, an advance / retreat portion 528 capable of advancing / retreating with respect to the bottom portion 527 of the swing arm 520 is provided on the upper surface 523 of the swing arm 520. In the present embodiment, a coil spring 529 is disposed between the advance / retreat portion 528 and the bottom portion 527.

  Here, in the configuration of the present embodiment, when the thickness of the sheet bundle sandwiched between the eject roll 433 and the press roll 436 is large, the cam 533 cannot be rotated to the bottom dead center, and the eject roll 433 and the press roll are pressed. The load when the sheet bundle is sandwiched between the rolls 436 is reduced. In this case, when the sheet bundle is discharged, there is a possibility that slip occurs between the sheet bundle and the eject roll 433. For this reason, in the present embodiment, as described above, the advancing / retreating portion 528 is provided, and the coil spring 529 between the advancing / retreating portion 528 and the bottom portion 527 is provided. In this configuration, even if the thickness of the sheet bundle is large, the cam 533 rotates to the bottom dead center, and the sheet bundle is pressed with a load greater than a predetermined load.

By the way, the advance / retreat mechanism 500 may be configured as shown in FIG. 5 (a diagram showing another configuration example of the advance / retreat mechanism 500). In FIG. 5, the swing arm 520 and the like are shown in a simplified manner. In FIG. 5, the covering member 540 is not shown.
Here, in the advance / retreat mechanism 500 shown in FIG. 5, the cam 533 is provided below the swing arm 520 instead of above the swing arm 520, and the swing arm 520 pressed from above by the coil spring 590 is replaced with the cam 533. It is set as the structure supported from below using.

  By the way, in the configuration shown in FIG. 5, the coil spring 590 is disposed in one of the one region and the other region facing each other with the swing arm 520 interposed therebetween, and the cam 533 is disposed in the other region. Therefore, the dimension in the height direction tends to be larger than the above configuration in which the coil spring 550 and the cam 533 are arranged in one region of the swing arm 520.

  Further, in the configuration shown in FIG. 5, when the pressing roll 436 is moved away from the eject roll 433 (see FIG. 1), the pressing roll 436 is moved against the force acting from the coil spring 590. 436 becomes difficult to move. If the pressing roll 436 is difficult to move in this manner, it is difficult to widen the gap between the pressing roll 436 and the eject roll 433. In other words, the gap between the pressing roll 436 and the eject roll 433 tends to be small.

  In this case, when the paper P on which curling (warping) or the like has been conveyed, the paper P is easily caught on the pressing roll 436 or the like. Although not described above, when the paper P is collected in the compiling unit 431 (see FIG. 1), the paper P temporarily passes between the pressing roll 436 and the eject roll 433. Thereafter, the sheet P moves toward the end guide 431A (see FIG. 1) of the compiling unit 431. Here, if the paper P is easily caught on the pressing roll 436 as described above, the movement of the paper P to the end guide 431A is restricted, and it is difficult to generate the paper bundle in the compiling unit 431.

  On the other hand, in the configuration shown in FIGS. 1 to 4, when the pressing roll 436 is moved away from the eject roll 433, it is necessary to move the pressing roll 436 against the force acting from the coil spring 550. In other words, the pressing roll 436 is easy to move. Therefore, in the configuration shown in FIGS. 1 to 4, the gap between the pressing roll 436 and the eject roll 433 can be easily expanded as compared to the configuration shown in FIG. 5. In this case, even the paper P on which curl or the like is generated can easily pass between the pressing roll 436 and the eject roll 433.

FIG. 6 is a view when the advance / retreat mechanism 500 is viewed from above, and FIG. 7 is a perspective view when the advance / retreat mechanism 500 is viewed from the upstream side in the sheet bundle discharge direction.
As shown in FIG. 6 and as described above, the cover member 540 has a first side plate 541 that is located downstream in the sheet bundle discharge direction and extends in a direction perpendicular to the sheet bundle discharge direction. Is provided. Further, the cover member 540 has a second side plate 542 disposed along the discharge direction of the sheet bundle, and a third side plate disposed on the opposite side of the second side plate 542 along the discharge direction of the sheet bundle. A side plate 543 is provided. Further, as shown in FIGS. 6 and 7, the cover member 540 is arranged at the upstream end in the sheet bundle discharge direction along the direction orthogonal to the sheet bundle discharge direction, and the second side plate 542. A side 547 that connects the first side plate 543 to the third side plate 543 is provided.

  In this embodiment, as shown in FIGS. 6 and 7, the protruding piece 545 is provided connected to the side 547 and protrudes from the side 547 toward the upstream side in the sheet bundle discharge direction. Is provided. Here, the protruding piece 545 is connected to the central portion of the side 547 in the longitudinal direction. In the above description, the covering member 540 is fixed to the first shaft 531. However, in the present embodiment, the protruding piece 545 of the covering member 540 is fixed to the first shaft 531.

  In addition, although the description is omitted above, in the present embodiment, two coil springs 550 that pull up the swing arm 520 upward are provided. More specifically, as shown in FIGS. 6 and 7, coil springs 550 are provided on both sides of the protruding piece 545 in a direction orthogonal to the sheet bundle discharge direction.

  In the present embodiment, an inclination is given to a part of the upper plate 544 of the covering member 540. More specifically, as shown in FIG. 7, an inclination is given to a portion 544A of the upper plate 544 of the covering member 540 that is located on the upstream side in the sheet bundle discharge direction. More specifically, an inclination is given that is displaced upward in the figure as it goes downstream in the sheet bundle discharge direction.

  More specifically, the portion 544A to which the inclination is applied is provided with an inclination having the same inclination angle as the inclination angle provided to the upper stacking portion 46 (see FIG. 1). Thereby, in this embodiment, compared with the case where the inclination angle of the part 544A to which the inclination is given is not the same as the inclination angle of the upper stacking part 46, the upper stacking part 46 for the part 544A to which the inclination is given. Can be arranged in a closer state. In other words, the upper stacking unit 46 can be disposed closer to the covering member 540. In this case, the paper processing device 4 can be reduced in size.

DESCRIPTION OF SYMBOLS 4 ... Paper processing apparatus, 431 ... Compile part, 432 ... Exit roll, 436 ... Press roll, 436A ... End part, 500 ... Advance / retreat mechanism, 520 ... Swing arm, 531 ... 1st shaft, 532 ... 2nd shaft, 533 ... cam, 540 ... covering member, 549 ... edge, 550 ... coil spring

Claims (9)

A recording material bundle generating unit on which recording materials conveyed in one direction are stacked and a recording material bundle is generated;
A conveying member used for conveying the recording material bundle generated by the recording material bundle generation unit, and when the recording material bundle is generated by the recording material bundle generation unit, the recording material A conveying member retracted from the bundle generating unit ;
An advancing / retracting member attached to the conveying member and capable of advancing / retreating with respect to the recording material bundle generating unit; a cam for moving the advancing / retreating member relative to the recording material bundle generating unit; a cam support shaft for supporting the cam; The advancement / retraction member is advanced / retracted with respect to the recording material bundle generation unit by rotating the cam, the movement of the conveying member toward the recording material bundle generation unit, and the recording material bundle generation unit A moving mechanism for moving the conveying member in the direction of separating;
A cover member fixed to the cam support shaft for supporting the cam and covering the cam, the cover member having an opening on the recording material bundle generation unit side and having an edge portion surrounding the opening ;
Equipped with a,
When the conveying member is retracted from the recording material bundle generating unit, the conveying member enters the inside of the covering member through the opening,
A portion of the edge that is located downstream of the conveying member in the one direction is an end of the conveying member that is retracted from the recording material bundle generating unit on the recording material bundle generating unit side. Recording material processing apparatus located in a location farther from the recording material bundle generating unit than the recording unit. A recording material bundle generator for generating a recording material bundle;
A conveying member used for conveying the recording material bundle generated by the recording material bundle generating unit;
An advancing / retracting member attached to the conveying member and capable of advancing / retreating with respect to the recording material bundle generating unit; a cam for moving the advancing / retreating member relative to the recording material bundle generating unit; a cam support shaft for supporting the cam; The advancement / retraction member is advanced / retracted with respect to the recording material bundle generation unit by rotating the cam, the movement of the conveying member toward the recording material bundle generation unit, and the recording material bundle generation unit A moving mechanism for moving the conveying member in the direction of separating;
A covering member that covers the cam, and is not fixed to the advance / retreat member and the conveyance member, is fixed to the cam support shaft, has an opening on the recording material bundle generation unit side, and A cover member through which the advance / retreat member and the transport member enter and exit the cover member ;
A recording material processing apparatus comprising: The advance / retreat member moves forward and backward with respect to the recording material bundle generation unit by swinging about a predetermined axis,
3. The recording material processing apparatus according to claim 1, wherein the covering member is also fixed to the shaft that is a swing center when the advance / retreat member swings. A coil spring for urging the advance / retreat member toward the cam;
One end of the coil spring is fixed to said reciprocating member, the other end of the coil spring, the recording material processing apparatus according to any one of claims 1 to 3, characterized in that it is fixed to the cover member . 5. The recording material processing apparatus according to claim 4 , wherein the cam and the coil spring are arranged in one of the one area and the other area facing each other with the advance / retreat member interposed therebetween. Recording material processing apparatus according to any one of claims 1 to 5, characterized in that covered by the site to be pressed also the cover member by the cam of said reciprocation member. A recording material bundle generating unit on which recording materials conveyed in one direction are stacked and a recording material bundle is generated;
A conveying member used for conveying the recording material bundle generated by the recording material bundle generation unit, and when the recording material bundle is generated by the recording material bundle generation unit, the recording material bundle A conveying member retracted from the generating unit ;
A swinging member attached to the conveying member and swingable about a predetermined axis; and a cam for swinging the swinging member, and rotating the cam to rotate the swinging member. A moving mechanism that swings the moving member and moves the conveying member toward the recording material bundle generating unit and moves the conveying member in a direction away from the recording material bundle generating unit;
A cover member that is fixed to the shaft serving as a swing center when the swing member swings and covers the cam, and has an opening on the recording material bundle generation unit side, and an edge that surrounds the opening A covering member comprising:
Equipped with a,
When the conveying member is retracted from the recording material bundle generating unit, the conveying member enters the inside of the covering member through the opening,
A portion of the edge that is located downstream of the conveying member in the one direction is an end of the conveying member that is retracted from the recording material bundle generating unit on the recording material bundle generating unit side. Recording material processing apparatus located in a location farther from the recording material bundle generating unit than the recording unit. A recording material bundle generator for generating a recording material bundle;
A conveying member used for conveying the recording material bundle generated by the recording material bundle generating unit;
A swinging member attached to the conveying member and swingable about a predetermined axis; and a cam for swinging the swinging member, and rotating the cam to rotate the swinging member. A moving mechanism that swings the moving member and moves the conveying member toward the recording material bundle generating unit and moves the conveying member in a direction away from the recording material bundle generating unit;
A covering member that covers the cam, and is not fixed to the swinging member and the conveying member, and is fixed to the shaft serving as a swing center when the swinging member swings; A cover member having an opening on the recording material bundle generation unit side, and through which the swinging member and the transport member enter and exit the cover member ;
A recording material processing apparatus comprising: A cam support shaft for supporting the cam;
The covering member, the recording material processing apparatus that claim 7 or 8, wherein which is fixed with respect to the cam support shaft.

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