JPH0328044Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Field of Application] The present invention relates to a sheet folding device, and more particularly to an edge folding device that folds a corner portion that overlaps the binding side of a file into a triangular shape by blade folding or the like. [Conventional technology] For example, conventionally used blueprints (diazo copies) and recent electrophotographs (transfer type copies)
You can get copies of various sizes. Generally, A size copies larger than A4 are
Fold into A4, and B-size copies larger than B5 into B5. For example, A2 to A4
When folding, first fold one corner into a triangular shape (end face folding), then fold once vertically, and then fold twice horizontally (wing fold). [Problems to be Solved by the Invention] Conventionally, this type of sheet folding process is performed manually, which requires a lot of work, and it is not always possible to obtain an accurate folded shape. Many people do not know how to fold, and it takes time and effort to correct the folding method. Although the triangular shape of the end face fold must correspond to the sheet size, it is difficult to obtain an accurate fold shape for each size. SUMMARY OF THE INVENTION The object of the present invention is to provide an end folding device that automatically performs triangular end folding, and more particularly, to provide an end folding device that automatically performs end folding of accurate folding lines and folded shapes. . [Means for Solving the Problems] The sheet edge folding device of the present invention has a standby position (fifth
b), a sheet extending in a predetermined direction 103
The first side FE and the first side parallel to the direction 103 of PR
A linear portion 197a located below the corner where the second side SE perpendicular to FE intersects, and where the first side FE and the second side SE intersect;
It is in the shape of a "shi" and has a curved part 197b that is continuous at a position extending outside the sheet PR from the side SE and curves in the direction toward the second side SE, and whose tip is outside the second side SE of the sheet. Moreover, the folding plate 197 has a folded edge with a downwardly facing tapered surface for guiding the sheet downward; Folded plate 1 is on the inside of sheet PR than folded plate 197 with respect to side SE.
Extension line of the side near 97 and the above second side of sheet PR
The intersection with SE is on the second side SE,
The linear portion 1 is placed so that the bending point of the curved portion 197b in the shape of a
Presser plate 138 extending substantially parallel to 97a; presser drive means 140, 148, 150 for driving the presser plate 138 downward to the presser position for pressing the sheet PR;
152; After the press plate 138 has moved to the presser position, the fold plate 197
folding driving means 136, 196, 198, 199 for driving the folding edge of the sheet parallel to the sheet surface until at least the folded edge is positioned above the push plate 138;
By driving the folding plate 197, the folding plate 197 moves the rear pushing plate 138 located above the pushing plate 138 through the folded sheet by the folding plate 197, and the folding drive means 136, 196, 198, 199 evacuation drive means 195, 196 for driving the folded plate 197 in the same direction 103 as the direction in which it passes below the folded sheet; Board return drive means 136, 196, 198, 19
9; Upper return driving means 14 for driving the push plate 138 upward
4; and a lateral return drive means 145 for driving the push plate 138 to the standby position. In addition, the symbols in the cutout are from the drawings (Figure 4 and below)
This figure shows corresponding elements in the drawings of the embodiment shown in and described later. [Operation] The drive means 140, 148, 150, 152 drives the press plate 138 downward to the press position where it presses the sheet PR, so that the press plate 138 presses the sheet PR. By the way, the linear part of the folded edge of the folded plate 197 is triangular with one corner of the sheet PR as its apex.
It is located at a position forming the base opposite to the apex, and the push plate 1
38 is substantially parallel to the linear portion, the pressing plate 138 presses the sheet with the bottom portion of the triangle (hereinafter referred to as a triangular folded piece) having one corner of the sheet as the apex, which is opposite to the apex. Then, if the corner of the sheet is raised up and folded back to reach the upper surface of the push plate, a triangular fold will appear.)
8,199 drives the folding plate 197 parallel to the sheet surface until at least its folded edge is positioned above the pushing plate 138 after the pushing plate 138 has moved to the holding position as described above. The folded plate 197 is below the sheet PR, and the push plate 138 is above the sheet PR. When the folded plate 197 moves in this way, the push plate 138
The extension line of the side near the return plate 197 and the second sheet PR
It extends substantially parallel to the linear portion 197a such that the intersection with the side SE is at the position where the bending point of the “C”-shaped curved portion 197b on the second side SE hits or in the immediate vicinity thereof. Therefore, the straight portion 197a makes the triangular folded piece stand upward, and at this time, the curved portion 197b forms the folding start point of the bottom of the triangular folded piece on the second side SE side of the sheet PR, and the folding continues from this folding starting point. As the sheet progresses inward, the accurate triangular folded piece is pressed against the push plate 138.
It is folded smoothly onto the top surface of the . Further, the retraction driving means 195, 196 moves the push plate 138 after folding the triangular folded piece described above by driving the folding plate 197 by the folding driving means 136, 196, 198, 199.
3 folded in the same direction as the direction 103 in which the folded plate 197 is driven by 96, 198, 199.
Drive until it passes below the corner piece. As a result, the push plate 138 is retracted from the folded triangular folded piece. Therefore, the folded plate return driving means 136, 196,
198 and 199 drive the folding plate 197 to the standby position in FIG. 5b, the upper return drive means 144 drives the push plate 138 upward, and the lateral return drive means 145 drives the push plate 138 to the standby position. As a result, the folding plate 197 and the push plate 138 become in a standby position for triangular folding of the next sheet. As described above, the press plate 138 presses the sheet PR,
The folding position is defined by the push plate 138, and the folding plate 19
7 stands up the triangular folded piece upward at the straight part of the folded edge, forms a folding point at the bottom of the triangular folded piece on the second side SE side of the sheet PR at the curved part, and from this folding point, the sheet Since the triangular folded piece is smoothly folded back onto the upper surface of the push plate 138 with the fold progressing inward,
The triangular fold is reliably performed, the position and direction of the fold line are accurate, and an accurate fold shape can be obtained. Other objects and features of the present invention will become apparent from the following description of preferred embodiments with reference to the drawings. [Embodiment] FIG. 1 shows a sheet processing machine 900 equipped with an end folding device according to an embodiment of the present invention, with the openable and closable front cover removed. Note that this sheet processing machine 900 has an appearance shown in FIG. 2 when the front cover is closed, and in the most preferable embodiment, the sheet processing machine 900 has the appearance shown in FIG.
00 and the sorter 1000, and the control signal line of the sheet processing machine 900 is connected to the copying machine 800. A control signal line for sorter 1000 is also connected to copying machine 800. The copying machine 800 is designed to be most suitable for this combination mode, and the copy size (recording paper size), number of sheets, copy feeding orientation (vertical, horizontal), stamp data (necessity of stamp, stamp position, Publisher, drawing type), punch data (necessity of punching), paper ejection data (ejection to tray ET or sorter 100)
0), a start signal, an end signal, etc. are given to the sheet processing machine 900. The sheet processing machine 900 is equipped with an operation board 11, which allows input paper size, paper input orientation (vertical, horizontal), stamp data (stamp necessity, stamp position, publisher, drawing type). , punch data (necessity of punching), paper ejection data (ejection to tray ET or ejection to sorter 1000), start signal, etc. can be set or input, independently of the copying machine 800. , and can operate in response to settings on the operation board 11 and operations on the board 11. When receiving a certain signal from the copying machine 800, the sheet processing machine 900 takes up the data and signal received from the copying machine 800 with priority over the settings and operations of the operation board 11. When copying machine 800 does not provide the required data,
The sheet processing machine 900 operates according to settings and/or operations on the operation board 11. Referring again to FIG. Copy paper is supplied from a copying machine 800 to a sheet processing machine 900 in the direction of an arrow 801. Note that when the copying machine 800 is not connected, paper is fed to the sheet processing machine 900 from the direction of the arrow 801 using an auto feeder or manual feeding. The paper entering the sheet processing machine 900 is passed through a vertical folding mechanism unit 100-90 degree turning mechanism unit 200-
A blade folding mechanism unit 300 - a punch mechanism unit 400 - a stamp mechanism unit 500 - a vertical conveyance mechanism unit 600 - a paper discharge mechanism unit 700,
The sheets are conveyed in this order, from the paper ejection mechanism unit 700 to the direction 701 to the tray ET or to the sorter 100.
0 in the direction 703. Vertical folding mechanism unit 100, 90° turn mechanism unit 200, blade folding mechanism unit 300, punch mechanism unit 400, stamp mechanism unit 50
0 and the vertical conveyance mechanism unit 600 are housed in a drawer-shaped case, and the paper discharge mechanism unit 700 is housed in a drawer-shaped case.
00 is attached to the main body of the sheet processing machine 900, and is protected by a unit cover that can be opened and closed. A handshake for the drawer is fixed to the case wall on the front side of the drawer-shaped case in which each unit is housed, and grips 180, 215, 386, 472 for manually feeding jam paper and grips 180, 215, 386, 472 for manual paper feeding and 634 is exposed. Each of these grips is connected to a paper feed roller of the mechanical unit. 237, 390 and 476 are switches for instructing jam paper cutting. An engaging element that is spring-engaged with a latch member of the sheet processing machine 900 main body is fixed to the case wall on the back side of the drawer-shaped case that houses each unit.
This engager engages the latch member when the drawer-shaped case is pushed inward with a relatively strong force. In the engaged state, the engager will not disengage from the latch member even if a weak force is applied in the direction of case withdrawal.
If an attempt is made to pull out the case with a strong force, the engager will come off the latch member, and the drawer-shaped case will be pulled out from the main body of the sheet processing machine 900 toward the front. A male power line connector and a male signal line connector that are connected to the female power line connector and the female signal line connector of the main body of the sheet processing machine 900 are also fixed to the case wall on the back side of the drawer-shaped case that houses each unit. These male connectors engage the female connectors when the aforementioned engagers engage the latch members. Roughly speaking, the gear that obtains the main power of the mechanical unit is exposed on the back side of the drawer-shaped case that houses each unit from the case wall, and the aforementioned engager engages with the latch member. At this time, this gear engages with a gear of a power transmission system of the main body of the sheet processing machine 900, which is driven by the main motor. The gear that obtains the main power of the mechanical unit is pivotally mounted in a drawer-shaped case, and is connected to the gear shaft via other gears, power transmission means such as chains and belts, and clutches as necessary. The paper conveyance roller of the mechanism unit is connected to the paper conveyance roller of the mechanism unit. Note that some mechanical units are equipped with an independent motor for driving rollers, and in this embodiment, in a mechanical unit with simple paper feed control, the mechanical unit is connected to the main power system of the main body of the sheet processing machine 900 via gears. However, for mechanical units with somewhat complicated paper feed control, an independent motor is provided in the drawer-shaped case, and the paper feed rollers within the mechanism are driven independently by this motor. There is. Vertical folding mechanism unit 100, 90° turn mechanism unit 200, blade folding mechanism unit 300, punch mechanism unit 400, stamp mechanism unit 50
0 and the vertical conveyance mechanism unit 600 are drawer-type unit units, so when removing paper jams, inspecting the mechanism, repairing, etc., each unit can be easily removed from the processing machine 900 and placed on the workbench. be able to. It is also easy to reinstall. When the jam paper straddles the vertical folding mechanism unit 100 and the 90° turn mechanism unit 200, press the switch 237 and then move the paper between the vertical folding mechanism unit 100 and the 90° turning mechanism unit 200.
Remove the jam paper by pulling out in order. When the switch 237 is pressed, a cutter 223 (see FIG. 4) provided in the unit 200, which will be described later, automatically cuts the paper between the units 100 and 200. Similarly, the jam paper is rotated by 90° turn mechanism unit 2.
00 and the blade folding mechanism unit 300, press the switch 390 and then pull out the 90° turn mechanism unit 200 and the blade folding mechanism unit 300 in order to remove the jam paper. When the switch 390 is pressed, a cutter 376 (see FIG. 4) provided in the unit 300, which will be described later, automatically cuts the paper between the units 200 and 300. Similarly, the jam paper is inserted into the blade folding mechanism unit 3.
00 and the punch mechanism unit 400, press the switch 476 and then pull out the blade folding mechanism unit 300 and the punch mechanism unit 400 in order to remove the jam paper. When the switch 476 is pressed, the unit 400
A cutter 452 (FIG. 4) provided therein automatically cuts the paper between the units 300-400. An overview of the paper processing operation of the sheet processing machine 900 is shown in FIGS. 3a and 3b. The maximum size of paper that can be processed by the sheet processing machine 900 is A2 (indicates the size. Hereinafter, words such as size and version will be omitted and only the size symbol will be shown), and the paper input for A2 is as shown in Figure 3a. Only the vertical orientation shown can be processed. The relationship between paper size and possible processing of sheet processing machine 900 is summarized below.

[Effect of idea]

As described above, the press plate 138 presses the sheet PR,
Moreover, due to the movement of the folded plate 197, the second side of the paper PR is located at the position where the bent part 197b of the "shi"-shaped part passes.
A folding start point is formed at SE, and furthermore, the push plate 138 and the folding plate 197 form a folding start point at the first side FE of the paper PR, and the movement of the folding plate 197 connects the two starting points to fold the paper. Since it is folded back, triangular folding is performed reliably, the folding line is accurate, and an accurate folding shape can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a front view of a sheet processing machine 900 equipped with an end folding device, which is an embodiment of the present invention, with the front cover removed and the front cover plate of the sheet discharge mechanism unit 700 removed. be. FIG. 2 shows a sheet processing machine 900 connected to a copying machine 800,
FIG. 2 is an external perspective view showing the most recommended usage condition in which a sorter 1000 is connected to a sheet processing machine 900. 3a and 3b are plan views of paper, showing the state of paper processing in sheet processing machine 900 and copying machine 800. FIG. FIG. 4 is a front view showing the main parts of the mechanism of the sheet processing machine, and corresponds to an enlarged view of the state shown in FIG. 1 with the unit cover removed. Fifth
Fig. a is an enlarged perspective view showing main mechanical elements of a longitudinal folding mechanism unit 100 of a sheet processing machine 900, which is an embodiment of the present invention. FIG. 5b is an enlarged plan view of the folded plate 197 shown in FIG. 5a. FIG. 5c is a cross-sectional view taken along the line VC-VC of FIG. 5b. 5th d
The figure is a sectional view taken along the line VD-VD in FIG. 5b. Figures 5e, 5f, 5g and 5i are
FIG. 4 is a plan view of the paper fed to the paper transport surface of the vertical folding mechanism unit 100, each showing different operating states of the unit 100; FIG. 5h is a perspective view showing the mechanical part of another embodiment of the present invention. 1, 2 and 4, 800: copying machine, 900: sheet processing machine, 1000: sorter,
ET: Paper output tray, 11: Operation board, 100:
Vertical folding mechanism unit, 190, 192: Handshake for drawer, 180: Grip for jam paper ejection drive, 80
1: Arrival direction of paper to be processed, 200: 90° turn mechanism unit, 239: Handshake for drawer, 21:
Grip for driving jam paper ejection, 237: Switch for instructing jam paper cut, 300: Blade folding mechanism unit, 388: Handshake for drawing out, 386: Grip for driving jam paper ejection, 390: Switch for instructing jam paper cut. Switch, 400: Punch mechanism unit,
474: Handshake for drawing out, 472: Grip for driving jam paper ejection, 476: Switch for instructing to cut jam paper, 500: Stamp mechanism unit, 59
8: Handshake for drawer, 600: Vertical conveyance mechanism unit, 636: Handshake for drawer, 634: Grip for driving jam paper ejection, 700: Paper ejection mechanism unit,
701: Tray paper discharge direction, 703: Sorter paper discharge direction. Figures 5a to 5h, 103: Paper feeding direction;
PR: Paper, FE: 1st side, SE: 2nd side, 104,
108, 162, 166: roller, 116, 11
8,120: Vertical folding roller, 165,169: Steel ball, 112: Gate claw, 154,178: Fixed register, 126,156: Movable register, 11
4,124,130,150,160: Solenoid, 164: Steel ball solenoid, 136: Half-rotation clutch, 197: Folded plate, 138: Push plate, 193,
199: Guide bar, 196: Link arm, 1
40: U-shaped frame, 198: Carriage, 144
4,145: Tension spring, 174,176:
Paper sensor, 98: Lever, 97: Fixed pin, 9
9: Engagement pin.

Claims (1)

[Claims for Utility Model Registration] (1) In the standby position, the sheet is located below the corner where the first side parallel to the specified direction and the second side perpendicular to the first side of the sheet extending in the specified direction intersect, and A straight part that intersects the first side and the second side, and a straight part that is continuous at a position extending outward from the second side of the sheet and curved in the direction toward the second side, and whose tip is on the second side of the sheet. a folded plate having a folded edge in the shape of a ``C'' with an outer curve and a downwardly directed tapered surface for guiding the sheet downward; in the standby position, above the sheet; located on the inner side of the sheet than the folded plate with respect to the second side, and the intersection of the extension line of the side near the folded plate and the second side of the sheet is on the second side,
a pressing plate extending substantially parallel to the linear portion so that the bending point of the “C”-shaped curved portion hits or is in the immediate vicinity thereof; driving the pressing plate downward to a presser position for pressing the sheet; Presser driving means; Folding driving means for driving the folded plate parallel to the sheet surface until at least the folded edge thereof is positioned above the pressing plate after the pressing plate moves to the pressing position; the folding driving means After the folding plate is positioned above the pushing plate through the sheet folded back by the folding plate, the pushing plate is moved in the same direction as the folding plate is driven by the folding driving means. a retracting drive means that drives the folded sheet in the direction until it passes below the folded sheet; a folded plate return drive means that drives the folded plate to the standby position; an upward return drive means that drives the push plate upward; and A sheet edge folding device comprising: a lateral return drive means for driving the push plate to the standby position. (2) The sheet edge folding device according to claim 1, wherein the folding driving means comprises a link arm and a half-rotation clutch coupled to the folding plate via the link arm. (3) The retraction drive means is an interlocking member that is pushed by the folding plate and moves the pushing plate in the same direction as the folding plate is driven by the folding driving means, and the lateral return driving means applies a return force to the pushing plate in the direction of the standby position. The sheet edge folding device according to claim (1) of the above-mentioned utility model registration, comprising a spring member that provides a force. (4) The above-mentioned utility model, wherein the presser drive means is a member driven by a solenoid and a solenoid bias to drive the press plate downward, and the upward return drive means is a spring member that applies an upward return force to the press plate. A sheet edge folding device according to registered claim (1). (5) The folding drive means comprises a guide bar, a carriage attached to the guide bar and to which a folding plate is fixed, a half-rotation clutch, and a link connecting the output shaft of the half-rotation clutch and the carriage. The sheet edge folding device according to paragraph (1). (6) The retraction driving means consists of a guide bar and a pushing plate support attached to the guide bar and pushed by the forward movement of the carriage of the folding driving means, and the lateral return driving means generates a force that drives the pushing plate support back in the opposite direction. The sheet edge folding device according to claim 5, which comprises a spring member that provides the following. (7) The evacuation drive means has one end engaged with the guide bar, a push plate support attached to the guide bar, and a push plate support, the other end is pivotally connected to a pin, and a carriage of the folding drive means is connected between both ends. The sheet edge folding device according to claim 5, wherein the sheet edge folding device is comprised of a rotator that is pushed, and the lateral return drive means is a spring member that applies a force to return the push plate support in the opposite direction. (8) The presser foot drive means consists of a solenoid and a link arm that rotate the presser plate support in one direction.
The sheet edge folding device according to claim 5, wherein the upper return drive means is a spring member that rotates in a direction opposite to that of the upper return drive means.