JPH07100791A - Sheet cutting device - Google Patents

Abstract

PURPOSE:To favourably cut a sheet by allowing a shiftable body held on a rail to hold a rotary cutter and an auxiliary cuter for cutting a sheet in cooperation and installing a rotary device for revolving the rotary cutter according to the shift of the shiftable body. CONSTITUTION:A shiftable body 22 travels in the direction of arrow A along a rail 21, and takes in a sheet to the cut point P by the guide surfaces 32a and 32b, and a rotary cutter 24 and an auxiliary cutter 25 cut the sheet. Since, at this time, the rotary cutter 24 revolves according to the shift of the shiftable body 22, the sheet can be cut favourably. The sheet on the cut separation side is pushed out in the transverse direction by the guide surface 33 of the shiftable body 22, and discharged to a discharge tray. Further, since the shiftable body 22 shifts, discharging the sheet, the generation of a trouble due to the interference between the shiftable body 2 and the sheet is prevented, and the sheet can be cut favourably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet cutting device for cutting a sheet such as recording paper in the width direction in a facsimile device, a recording device or the like.

[0002]

2. Description of the Related Art Conventionally, as a sheet cutting device for separating recorded recording paper in a facsimile machine, one using a fixed blade having a long blade and a rotary blade that rotates and moves along the fixed blade has been used. There is. This sheet cutting device will be described by taking the facsimile device shown in FIG. 12 as an example. In FIG. 12, 1A is a roll-shaped recording paper (hereinafter referred to as a roll paper), 1 is a recording paper drawn from the roll paper 1 (hereinafter referred to as a sheet), 1a is a separated sheet, 2
Is a recording head for recording the received information on the sheet 1, 3 is a recording roller for conveying the sheet 1 while pressing it against the recording head 2, and above the sheet cutting device 5 (downstream).
Are arranged. This sheet cutting device 5 is a sheet 1
A fixed long blade 6 provided so as to extend in the width direction of the sheet at a position where the sheet travels, that is, one side of the sheet conveying path, and a fixed long blade 6 on the opposite side of the fixed long blade 1 of the sheet conveying path. A rail 7 provided in parallel to the rail 7, a movable body 8 movably held on the rail 7, a belt 9 for reciprocating the movable body 8 along the rail 7, and a belt roller 10 around the belt 9. And a rotary blade 11 which is held by the movable body 8 and rotates along the fixed length blade 6 to cut the sheet, and the movable body 8 travels along the rail 7 while the sheet 1 is stopped. The rotary blade 11 is rotated by traveling while making frictional contact with the fixed long blade 6, and the sheet 1 is cut by the rotary blade 11 and the fixed long blade 6.

A discharge roller 13 and a discharge tray 14 are provided above the sheet cutting device 5, and the cut sheet 1a is discharged onto the discharge tray 14 after the cutting is completed.

[0004]

However, in the sheet cutting apparatus having such a structure, since the fixed long blade 6 and the rail 7 are provided so as to sandwich the sheet conveying path, the roll paper 1
When A is set at a predetermined position, the leading end of the sheet 1 has to be inserted into the gap between the fixed long blade 6 and the rail 7, which is very difficult to use.

The present invention has been made in view of the above-mentioned problems, and sheet cutting capable of setting a roll paper without requiring a troublesome work of inserting a sheet front end into a narrow gap. The purpose is to provide a device.

[0006]

The invention according to claim 1 of the present application is as follows.
In order to solve the above-mentioned problems, the fixed long blade used conventionally is omitted, and the moving body held on the rail is caused to hold the rotary blade and the auxiliary blade that cut the sheet in cooperation with each other, and further, the moving It is provided with a structure for providing a rotating device for rotating the rotary blade according to the movement of the body.

According to a second aspect of the present invention, the moving body is provided with a take-in means for guiding the sheet to be cut to a cutting point by the rotary blade and the auxiliary blade, and an extruding means for pushing the cut sheet laterally. It is provided with a configuration to be provided.

In order to solve the above-mentioned problems, the invention according to claim 3 of the present application arranges a fixed long blade and a rail on one side of a sheet conveying path, and a moving body held by the rail is attached to the sheet. Extend to a position beyond the conveying path, form a rotary blade holding part at that position, and rotate the rotary blade that cuts the sheet by rotating along the fixed long blade at the rotary blade holding part It has a configuration of holding it.

According to a fourth aspect of the present invention, the moving body is provided with a pushing means for pushing the cut sheet laterally.

[0010]

According to the invention of claim 1 of the present application, when the moving body moves along the rail, the cutting point by the rotary blade and the auxiliary blade moves on the sheet conveying path and the sheet at that position is moved. Can be cut. At this time, since the rotary blade rotates in accordance with the movement of the moving body, the sharpness of the sheet is good, and only part of it is not excessively worn.
Also, since the fixed long blade is not used as in the past, when setting the roll paper, it is not necessary to insert the sheet tip into the gap between the fixed long blade and the rail as in the past, and it is easy to set. It is possible. The auxiliary blade used here may be a fixed blade or a rotatable rotary blade.

According to the second aspect of the present invention, since the moving body is provided with the take-in means and the pushing-out means, when the moving body travels and cuts the sheet, the sheet is reliably cut at the cutting point by the rotary blade and the auxiliary blade. By guiding the cut sheet in the lateral direction, the moving body can move smoothly while removing the sheet, and thus the sheet can be cut cleanly. Further, if a discharge tray is provided beside the sheet conveying path, the separated sheets can be automatically discharged to the discharge tray.

According to the third aspect of the present invention, when the movable body moves along the rail, the center of the rotary blade held by the movable body travels on the side opposite to the fixed long blade with respect to the sheet conveying path. Therefore, the sheet can be cut with the fixed long blade and the rotary blade. Here, since the fixed long blade is arranged on the same side as the rail holding the moving body with respect to the sheet conveyance path, it is necessary to insert the sheet tip into the gap between the fixed long blade and the rail as in the conventional case. Easy to set without

According to the fourth aspect of the present invention, since the moving body is provided with the pushing means, when the moving body travels and cuts the sheet, the moving body can smoothly move while removing the separated sheet. Therefore, the sheet can be cut cleanly. Further, if a discharge tray is provided beside the sheet conveying path, the separated sheets can be automatically discharged to the discharge tray.

[0014]

FIG. 4 is a schematic sectional view showing a facsimile apparatus equipped with a sheet cutting apparatus according to an embodiment of the present invention, and FIG. 5 is a schematic view showing the facsimile apparatus in a state in which an opening / closing section is opened and roll paper is set. FIG. 13 is a cross-sectional view, and the same or similar parts as those of the conventional example shown in FIG.
In FIGS. 4 and 5, 1A is a roll paper, 1 is a sheet (recording paper) pulled out from the roll paper 1A, 2 is a recording head for recording received information on the sheet 1, and 3 is a sheet 1
Is a recording roller that conveys while pressing the recording head 2 against the recording head 2. Reference numeral 15 is an apparatus main body, 16 is a roll paper accommodation portion formed in the apparatus main body 15, and 17 is an opening / closing portion rotatably attached to the apparatus main body 15.
Is attached to the opening / closing part 17. Reference numeral 18 denotes a discharge tray formed on the opening / closing portion 17, and is formed so as to be positioned above the recording roller 3 when the opening / closing portion 17 is closed.

Reference numeral 20 denotes a sheet cutting apparatus according to the embodiment of the present invention, which is arranged above the recording head 2 (downstream in the sheet flowing direction). FIG. 1 is a schematic perspective view showing a main part of the sheet cutting device 20, FIG. 2 is a schematic side view of the sheet cutting device seen in a longitudinal direction of a rail, and FIG. 3 is a partially cutaway view of the sheet cutting device. FIG. 1 to 5, reference numeral 21 denotes a position where the sheet 1 travels, that is, a sheet conveying path (indicated by a dashed-dotted line X in FIGS.
The rail is provided on one side (position indicated by -X) so as to extend in the width direction of the seat, and is provided on the side opposite to the opening / closing portion 17, as can be seen from FIG. A moving body 22 is movably held on the rail 21. A belt (not shown) provided so as to travel parallel to the rail 21 is connected to the moving body 22, and is configured to be moved along the rail 21 by the running of the belt. Therefore, a belt connected to the moving body 22 and a motor (not shown) for running the belt.
And the like constitute a drive device for moving the moving body along the rail.

Reference numeral 24 denotes a circular rotary blade that is rotatably held by the moving body 22, and 25 is an auxiliary blade that is held by the moving body 22 and cooperates with the rotary blade 24 to cut a sheet. In this embodiment, a straight fixed blade is used as the auxiliary blade 25, and the rotary blade 24 is pressed against the auxiliary blade 25 by a spring (not shown). The auxiliary blade 25 is not limited to the linear fixed blade shown in the illustrated embodiment, but a circular blade similar to the rotary blade 24 may be fixed as the auxiliary blade, or the circular blade may be rotated. You may attach it freely and use it as an auxiliary blade. The mounting positions of the rotary blade 24 and the auxiliary blade 25 are such that when the moving body 22 travels along the rail 21,
The cutting point P by both is set so as to move on the sheet conveyance path.

27 is a gear rail attached to the rail 21, 28 is a rotatably held by the moving body 22, and is a first gear meshed with the gear rail 27, 29 is a second gear which rotates integrally with the first gear 28, and 30 is It is a third gear meshed with the second gear 29, and is attached so as to rotate integrally with the rotary blade 24. These gear rail 27 and gear 2
By providing 8 to 30, the moving body 22 becomes the rail 21.
3, the rotary blade 24 can be rotated in the direction shown by the arrow B, so that the sheet can be cut well at the cutting point P. Therefore, these gear rail 27 and gear 28
˜30 constitute a rotating device that rotates the rotary blade according to the movement of the moving body. Here, the rotational speed of the rotary blade 24 is determined so that the speed component of the cutting edge in the XX direction at the cutting point P is substantially equal to or slightly faster than the moving speed of the moving body 22, It is preferable in terms of sharpness. The mechanism of the rotating device for rotating the rotary blade 24 is not limited to the illustrated combination of the gear rail and the gear, and may be another mechanism such as one using a wire and a pulley.

In FIG. 3, the moving body 22 is provided with a take-in means composed of guide surfaces 32a and 32b that spread in a V shape in front of the cutting point P, and the moving body 22 travels in the direction of arrow A to load the sheet. At the time of cutting, the sheet is guided to the cutting point P. Further, the inclined guide surface 33 is provided behind the cutting point P and above the rotary blade 24. On the guide surface 33, the moving body 22 has an arrow A.
When the sheet is moved in the direction to cut the sheet, the sheet on the separated side is pushed out in the lateral direction and constitutes an extruding means.

The operation of the facsimile apparatus having the sheet cutting device 20 having the above-mentioned structure will be described below. In the normal standby state, as shown in FIG.
7 is closed, and the leading end of the sheet 1 is the recording head 2
It is at a predetermined position sandwiched between the recording roller 3 and the recording roller 3. Further, as shown in FIG. 6A, the moving body 22 of the sheet cutting device 20 is stopped and stands by at a standby position that does not interfere with the traveling of the sheet. In this state, in FIG. 4, the recording roller 3 conveys the sheet 1, the recording head 2 simultaneously records the received information on the sheet 1, and the recorded sheet 1 is sent upward. When the recording of one document is completed, the recording roller 3 further feeds the sheet 1 and positions the trailing end of the recorded sheet at the cutting position by the sheet cutting device 20 and stops it.

Next, the moving body 22 is moved to the position shown in FIGS.
As shown in FIG. 5, the sheet 1 travels in the direction of arrow A along the rail 21, the sheet 1 is taken in at the cutting point P by the guide surfaces 32a and 32b, and the rotary blade 24 and the auxiliary blade 25 cut the sheet 1. At this time, since the rotary blade 24 is rotating according to the movement of the moving body 22, the sheet 1 can be cut well. The sheet 1a on the side to be separated is the moving body 2
2 is pushed out in the lateral direction by the guide surface 33 and the discharge tray 1
8 (see FIG. 4). Further, since the moving body 22 can move while discharging the sheet 1a, the moving body 22 does not interfere with the sheet 1a to cause a trouble, and the sheet 1 can be satisfactorily cut also from this point.
The moving body 22 moves across the entire width of the seat 1,
After disconnecting a, the moving body 22 returns to the original standby position and prepares for the next disconnection. By repeating the same operation thereafter, the sheet 1 is cut and discharged to the discharge tray 18.

As described above, in this embodiment, the sheet 1a on the side to be separated can be guided laterally by the guide surface 33 and automatically stacked on the discharge tray 18, so that the discharge roller 13 (which is conventionally used) is used. (See FIG. 12) does not need to be used and is omitted.

Next, when the roll paper 1A is set or replaced, the movable body 22 is set in the standby position which is out of the sheet conveying path and does not interfere with the opening / closing of the opening / closing portion 17, as shown in FIG. As shown, the opening / closing unit 17 is opened, and the roll paper 1A is placed in the roll paper accommodation unit 16 with the sheet 1 slightly pulled out. After that, when the opening / closing section 17 is closed, as shown in FIG. 4, the sheet 1 pulled out from the roll paper 1A is pinched by the recording head 2 and the recording roll 3 and is fed to the sheet conveyance path on one side of the rail 21. As a result, the roll paper setting operation is completed.
Therefore, unlike the conventional case, it is not necessary to perform the troublesome operation of passing the leading end of the sheet through the narrow gap between the rail and the fixed long blade, and the roll paper can be set by a simple operation.

Next, a second embodiment of the present invention will be described.
FIG. 10 shows a sheet cutting device 4 according to a second embodiment of the present invention.
11 is a schematic cross-sectional view showing a facsimile apparatus including 0.
FIG. 7 is a schematic cross-sectional view showing the facsimile apparatus in a state in which an opening / closing part is opened and roll paper is set. The same or similar parts as those of the embodiment shown in FIGS. Is omitted. Also in this embodiment, the sheet cutting device 40 is arranged above the recording head 2 (downstream in the sheet flow direction).

FIG. 7 is a schematic perspective view showing a main part of the sheet cutting device 40, FIG. 8 is a schematic plan view of the sheet cutting device 40, and FIG. 9 is a schematic side view of the sheet cutting device in the longitudinal direction of the rail. In FIGS. 7 to 11, reference numeral 41 denotes a rail that is provided at a position where the sheet 1 travels, that is, on one side of the sheet conveying path (position indicated by a chain line XX) so as to extend in the width direction of the sheet, As can be seen from FIG. 4, it is provided on the side opposite to the opening / closing section 17. Furthermore, the rail 41
A fixed long blade 45 is attached to the rail 41 so as to be on the same side with respect to the sheet conveyance path and parallel to the rail 41.

Reference numeral 42 denotes a moving body which is movably held by the rail 41, and a driving device (not shown) for moving the moving body along the rail 41 is also connected to the moving body 42. . The moving body 42 extends from a portion 42a supported by the rail 41 to the opposite side beyond the sheet conveying path, and forms a rotary blade holding portion 42b at that position. Reference numeral 44 denotes a circular rotary blade rotatably held by the rotary blade holding portion 42b, which is provided so that a part of the outer periphery thereof contacts the fixed long blade 45, and the spring 4 is provided.
6 is pressed against the fixed long blade 45. Therefore, when the moving body 42 travels in the direction indicated by the arrow A, the fixed long blade 4
By frictional contact with 5, the sheet can be rotationally moved to cut the sheet. The moving body 42 further has a pushing means composed of an inclined guide surface 47 at a position behind the cutting point P between the rotary blade 44 and the fixed long blade 45 and above the rotary blade 42. When the body 42 moves in the direction of arrow A and cuts the sheet, the sheet on the separated side is pushed out in the lateral direction. As can be seen from FIG. 10, the discharge tray 18 is formed below the traveling position of the rotary blade holding portion 42b of the moving body 42.

Next, the cutting operation by the sheet cutting device 40 will be described. In this embodiment as well, when the sheet cutting device 40 is inactive, the moving body 42 stands by at the standby position where it does not interfere with the sheet conveyance. When the sheet 1 is to be cut, the moving body 42 travels along the rail 41 in the direction of arrow A, and the rotary blade 44 comes into contact with the fixed long blade 45 and moves while rotating to cut the sheet 1. The sheet on the side to be separated, that is, the sheet above the rotary blade 44 is the guide surface 4
The sheet is pushed out in the lateral direction at 7, and is discharged onto the discharge tray 18 when the entire width of the sheet is cut. In this way, the sheet is cut and discharged well. After the sheet is cut, the moving body 42 returns to the original standby position and prepares for the next cutting.

When the roll paper 1A is set or replaced, as shown in FIG. 11, the movable body 42 is set in the standby position which is out of the sheet conveying path and does not interfere with the opening / closing of the opening / closing section 17. The opening / closing unit 17 is opened, and the roll paper 1A is placed in the roll paper storage unit 16 with the sheet 1 pulled out a little. After that, when the opening / closing part 17 is closed, as shown in FIG. 10, the sheet 1 that has been pulled out from the roll paper 1A.
Is sandwiched between the recording head 2 and the recording roll 3, and is positioned on the sheet conveying path on one side of the rail 41 and the fixed long blade 45. Therefore, the roll paper setting operation is completed by this, and the troublesome operation of passing the leading end of the sheet through the narrow gap between the rail and the fixed long blade unlike the conventional case is unnecessary.

In each of the above embodiments, the sheet cut by the sheet cutting device 20 or 40 directly discharges the sheet.
No. 8 is used, and no discharge roller is used. However, depending on the position of the discharge tray, a discharge roller may be attached downstream of the sheet cutting device to discharge the cut sheet, as in the conventional case. In that case, if one of the two rollers (driving roller and pinch roller) forming the discharge roller is attached to the apparatus main body 15 side and the other is attached to the opening / closing section 17, the roll paper can be set easily. ,preferable.

[0029]

As is apparent from the above description, in the invention of claim 1 of the present application, the fixed long blade which has been conventionally used is omitted, and the moving body held on the rail cooperates with each other to cut the sheet. Since the rotating device is provided which holds the rotary blade and the auxiliary blade and further rotates the rotary blade according to the movement of the movable body, the rotary blade is rotated by moving the movable body along the rail. However, the cutting point by the rotary blade and the auxiliary blade moves on the sheet conveyance path, and the sheet at that position can be satisfactorily cut, and when setting the sheet to be cut, the conventional method is used. It is not necessary to insert the seat tip into the gap between the fixed long blade and the rail,
It is only necessary to position the tip of the seat on one side of the rail, which has the effect that the setting work is extremely easy.

According to a second aspect of the present invention, the moving body is provided with a take-in means for guiding the sheet to be cut to a cutting point by the rotary blade and the auxiliary blade, and an extruding means for pushing the cut sheet laterally. By providing the moving body, when the moving body travels and cuts the sheet, the sheet can be surely guided to the cutting point of the rotary blade and the auxiliary blade, and the moving body moves while guiding the cut sheet laterally. You can run without any problems, and for this reason,
The sheet can be cut cleanly, and if a discharge tray is provided beside the sheet conveying path, the separated sheet can be automatically discharged to the discharge tray. .

According to a third aspect of the present invention, the fixed long blade and the rail are arranged on one side of the sheet conveying path, and the movable body held by the rail is extended to a position beyond the sheet conveying path. , The rotary blade holding portion is formed at that position, and the rotary blade holding portion rotatably holds the rotary blade that cuts the sheet by rotationally moving along the fixed length blade, so that the moving body By running along the rail, the rotary blade held by it moves while rotating in contact with the fixed long blade, and the sheet at the position along the fixed long blade can be favorably moved by the fixed long blade and the rotary blade. Can be cut,
Moreover, when setting the sheet to be cut, it is not necessary to insert the sheet tip into the gap between the fixed long blade and the rail as in the conventional case, and the sheet tip is simply positioned on one side of the rail and the fixed long blade. It only needs to be carried out, and this has the effect that the setting work is extremely easy.

According to the invention of claim 4, the moving body is provided with an extruding means for pushing out the cut sheet in the lateral direction, so that when the moving body travels and cuts the sheet, the cut sheet is laterally cut. The moving body can move without hindrance while guiding in the direction, so that the sheet can be cut cleanly, and if a discharge tray is provided next to the sheet conveyance path,
This has the effect that the separated sheets can be automatically discharged to the discharge tray.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a main part of a sheet cutting device according to an embodiment of the present invention.

FIG. 2 is a schematic side view of the sheet cutting device as viewed in the longitudinal direction of the rail.

FIG. 3 is a schematic plan view showing the sheet cutting device with a part thereof cut away.

FIG. 4 is a schematic sectional view showing a facsimile machine equipped with the sheet cutting device of the above embodiment.

FIG. 5 is a schematic cross-sectional view showing the facsimile device in a state in which an opening / closing part is opened and roll paper is set.

6A is a schematic plan view showing a sheet just before the sheet is cut in the cutting operation by the sheet cutting apparatus of the above-described embodiment; FIG. 6B is a state in which the sheet is cut in the cutting operation by the sheet cutting apparatus of the above-described embodiment; Schematic plan view showing (c) A schematic plan view showing a state in which the cut sheet is extruded to the outside by the guide surface in the cutting operation by the sheet cutting apparatus of the above embodiment.

FIG. 7 is a schematic perspective view showing a main part of a sheet cutting device according to another embodiment of the present invention.

FIG. 8 is a schematic plan view thereof.

FIG. 9 is a schematic side view of the sheet cutting device as viewed in the longitudinal direction of the rail.

FIG. 10 is a schematic cross-sectional view showing a facsimile machine equipped with the sheet cutting device of the above embodiment.

FIG. 11 is a schematic cross-sectional view showing the facsimile apparatus in a state in which an opening / closing section is opened and roll paper is set.

FIG. 12 is a schematic sectional view showing a conventional sheet cutting device.

[Explanation of symbols]

 1 sheet (recording paper) 1A roll paper 2 recording head 3 recording roller 15 device body 16 roll paper accommodating unit 17 opening / closing unit 18 discharge tray 20 sheet cutting device 21 rail 22 moving body 24 rotary blade 25 auxiliary blade 27 gear rail 28 first gear 29 2nd gear 30 3rd gear 32a, 32b Guide surface 33 Guide surface 40 Sheet cutting device 41 Rail 42 Moving body 42b Rotary blade holding part 44 Rotary blade 45 Fixed long blade 47 Guide surface

Claims (4)

[Claims] 1. A rail provided on one side of a conveyance path of a sheet to be cut so as to extend in the width direction of the sheet, a movable body movably held by the rail, and the movable body on the rail. A drive device for moving along, a rotary blade rotatably held by the moving body, an auxiliary blade held by the moving body and cutting a sheet in cooperation with the rotary blade,
A sheet cutting apparatus having a rotating device that rotates the rotary blade according to movement of the moving body. 2. A rail provided on one side of a conveying path of a sheet to be cut so as to extend in the width direction of the sheet, a movable body movably held by the rail, and the movable body on the rail. A drive device for moving along, a rotary blade rotatably held by the moving body, an auxiliary blade held by the moving body and cutting a sheet in cooperation with the rotary blade,
A rotating device that rotates the rotary blade according to the movement of the movable body, a take-in means that is provided on the movable body and guides a sheet to be cut to a cutting point by the rotary blade and the auxiliary blade, and the movable body. And a sheet cutting device having an extruding unit that laterally pushes out the sheet cut by the rotary blade and the auxiliary blade. 3. A fixed long blade provided on one side of a conveying path of a sheet to be cut so as to extend in the width direction of the sheet, and fixed on the same side as the fixed long blade with respect to the sheet conveying path. A rail provided parallel to the long blade, a movable body which is movably held by the rail and has a rotary blade holding portion at a position beyond the sheet conveyance path, and the movable body is moved along the rail. A sheet cutting device having a driving device for causing rotation, and a rotary blade that is rotatably held by a rotary blade holding portion of the moving body and rotationally moves along the fixed long blade to cut a sheet. 4. A fixed long blade provided on one side of a conveying path for a sheet to be cut so as to extend in the width direction of the sheet, and fixed on the same side as the fixed long blade with respect to the sheet conveying path. A rail provided parallel to the long blade, a movable body which is movably held by the rail and has a rotary blade holding portion at a position beyond the sheet conveyance path, and the movable body is moved along the rail. A drive device for rotating, a rotary blade that is rotatably held by a rotary blade holding portion of the movable body, and rotationally moves along the fixed long blade to cut a sheet, and the rotary blade provided on the movable body, A sheet cutting device, comprising an extruding means for laterally pushing out a sheet cut by a fixed long blade.