JP4007312B2 - Punching device - Google Patents

Description

  The present invention relates to a punch device for forming punch holes in paper, and more particularly to a punch device used as a post-processing device such as a copying machine.

As a post-processing device for paper printed by a copying machine, a printer device, or the like, there is a punch device configured to operate in cooperation with the copying machine, the printer device, or the like. For example, “a sheet post-processing apparatus that performs punching (punching) processing by puncher on one or a plurality of recording sheets conveyed on a processing tray and then discharges the recording sheets to a discharge tray” ( Japanese Patent Application Laid-Open No. H11-260260, and one in which a set of stacked sheets of paper are aligned and punched after a set of paper is conveyed on a processing tray are known (Patent Document 2).
JP2003-206069 (paragraph numbers 0002, 0034) JP 2002-68578 A

  As in the apparatus described in Patent Document 1, punching (punching) processing is performed on one or a plurality of recording sheets conveyed on the processing tray by a puncher, and then the recording sheets are discharged to a discharge tray. In such a configuration, it is difficult to accurately match the positions of the sheets stacked one after another on the sheet discharge tray, and the upper and lower sheets are often displaced from each other and the punch holes are also displaced. In such a shifted state, there is a case where the binder cannot be subsequently attached to the punch hole, and it is necessary to align the paper manually, which is troublesome.

  In addition, when the bind processing device that automatically mounts the binder and the punch device are combined so that the punch processing and the bind processing are performed continuously, if the punch hole is misaligned, the binder is removed from the punch hole. Since there is a risk that the paper or the binder may be damaged or the punching device itself may be broken without passing through, some sort of paper aligning means is required.

  As in the apparatus described in Patent Document 2, in the case of batch punching by aligning a set of stacked paper sheets, the punch holes are not displaced, but a large number of holes are simultaneously formed on a large number of stacked sheets. The punching structure requires a large punching load on the punch driving mechanism, so that the driving mechanism must have sufficient driving force and rigidity, and there is a problem that the apparatus becomes large and the cost is high.

  Therefore, there is a technical problem to be solved in order to provide a punching device in which the punched paper is aligned in a state where the positions of the punch holes are exactly matched and can be configured smaller and lighter than the batch punching type. The present invention aims to solve the above problems.

The present invention is proposed to achieve the above object, and the invention according to claim 1 is characterized in that the punch mechanism unit, the paper feed mechanism unit that continuously feeds the paper to the punch mechanism unit , and the paper at a fixed position. A punching device including a paper aligning slider for aligning the sheet , wherein the punch mechanism unit includes a punch positioned below the paper, a die disposed above the punch and facing the punch, and lowering and lowering the die. A driving mechanism that ascends and a driving mechanism that lowers and raises the punch, and sequentially lowers and raises the die with respect to the paper continuously fed from the paper feeding mechanism unit to form punch holes, and the punch The present invention provides a punching device provided with a control unit that pierces paper and finishes punching a set of paper and then lowers the punch and pulls the punch from a punch hole of the set of paper.

The invention according to claim 2 further includes a stack tray for receiving the paper punched by the punch mechanism and a stack tray moving means, and lowers the punch after finishing the punching process for one set of paper. 2. A control means for pulling out a punch from a punch hole of one set of paper and moving the stack tray to convey one set of paper on the stack tray to a post-processing device such as a stapler device or a binder device. The punching device is provided.

According to a third aspect of the present invention , there is provided the punch according to the first or second aspect, further comprising position correcting means for correcting the lateral position of the paper with the paper fed to the punch mechanism from the left and right by the paper feeding mechanism. A device is provided.

According to a fourth aspect of the present invention , the punch has a hollow cylindrical shape, a pin is provided at the center of the circular hole of the die into which the punch is fitted, and the circular paper piece punched out by the punch and the die is the central hole of the punch. The punching device according to claim 1 or 2 configured to fall downward through the through hole.

According to the configuration of the punch device having the paper alignment slider for aligning the paper of the present invention at a fixed position , the punched paper is held in a state of being stuck in the punch. Therefore, when a plurality of sheets of paper are continuously processed, these sheets of paper pierce the punch, and when the punch is lowered and pulled out from the punch holes of the paper after the processing is completed, these one set of paper has punch holes. They are in a consistent state, and do not hinder the subsequent binder mounting process.
Further, since the punching process is performed for each sheet of paper, there is an effect that the driving load is small, the size and weight can be reduced, and the cost can be suppressed as compared with the case where the punching process is performed simultaneously on a large number of sheets.

  The punch device according to the present invention has a die placed above the punch, lifts and lowers the die, performs punching processing, and continuously punches a set of a plurality of sheets and then lowers the punch. In this way, the punch holes on each page are prevented from being misaligned.

  1 and 2 show a punching device 1, FIG. 1 is a side sectional view, and FIG. 2 is a front sectional view showing a right half from the front center. A vertical frame 3 is attached to the left and right edges of the bottom plate 2 shown in FIG. 1, and a punch mechanism unit 4 and a paper feed mechanism unit 5 are installed between the left and right vertical frames 3. In FIG. 1, the paper P is fed into the punch device 1 from the right, sent to the left by the paper feed mechanism unit 5, punched by the punch mechanism unit 4, and discharged to the left.

  As shown in FIG. 2, a vertical slide guide shaft 6 is provided in the vicinity of the left and right ends of the front part in the punch device 1, and the punch block 7 and the die block 8 are engaged with the left and right slide guide shafts 6. is doing. A plurality of hollow punch pins 9 (30 in this example) are attached upward to the lower punch block 7 at regular intervals. The upper die block 8 is formed with a plurality of circular holes 10 that form mating pairs with the hollow punch pin 9, and the pin 11 is disposed in the circular hole 10, and the hollow punch pin 9 and the circular hole 10 are fitted. Then, the circular punching residue generated when punching a punch hole in the paper is pushed into the hollow punch pin 9 by the pin 11 and falls into the bucket 12 attached to the lower surface of the punch block 7.

  A punch drive shaft 13 is installed between the upper parts of the left and right vertical frames 3, and the punch drive shaft 13 is rotationally driven by a motor 14 via gears 15 and 16, and the power of the punch drive shaft 13 is attached to both left and right ends. Is transmitted to the intermediate gear 18 via the gear 17. A crankshaft 19 is attached to the intermediate gear 18, and a shaft 20 provided at the left and right ends of the die block 8 and the crankshaft 19 are connected by links 21. Accordingly, by rotating and driving the punch drive shaft 13, the die block 8 reciprocates in the downward and upward directions along the vertical slide guide shaft 6.At the time of the downward movement, the circular hole 10 is fitted into the hollow punch pin 9 to form paper. Punch punch holes.

  A crankshaft 22 for raising and lowering the punch block 7 is disposed below the intermediate gear 18 of the die block raising and lowering mechanism described above. The shaft 24 attached to the frame 23 of the punch block 7 and the crankshaft 22 are linked to each other by a link 25. Are linked by. The crankshaft 22 is rotationally driven by a motor 26 shown in FIG. 1, and drives the punch block 7 up and down to an initial raised position shown in FIGS. 1 and 2 and a lowered position described later.

  As shown in FIG. 1, a paper table 27 is disposed at a height that is intermediate between the punch block 7 and the die block 8 at the initial position, and a paper guide cover 28 is provided on the paper table 27. A pair of paper feed rollers 29 are arranged above the front portion (right in the figure) of the paper table 27, and the paper P fed to the punch device 1 from a copier on the right side of the punch device 1 is paper. The paper is fed between the paper guide cover 28 and the paper table 27 by the feed roller 29, and is fed by the rotating paper feed brush 30 until the leading edge of the paper P passes between the punch block 7 and the die block 8. Further, paper alignment sliders, which will be described later, are provided on both the left and right sides of the paper path, and the left and right positions are aligned with the paper P sandwiched from both the left and right sides.

  At the rear (left in the figure) of the paper table 27, a rotating front table 31 that supports the leading end of the paper P is provided. The front table 31 is in the horizontal position of FIG. 1 in the punch hole forming process, and after the punch hole forming process, the tip on the right side in the drawing is rotated downward and retracted from between the punch block 7 and the die block 8. To do.

A stack tray 32 for receiving the punched paper is disposed under the paper table 27, and the punched paper is stacked on the stack tray 32. A pair of front and rear rollers 33 and 34 are provided on the left and right sides of the lower surface of the stack tray 32. The rollers are engaged with guide grooves 35 and 36 formed in the left and right vertical frames 3, and the stack tray 32 is a guide. It can move along the grooves 35, 36. The guide groove 35 that supports the front (right in the figure) roller 33 is a horizontal straight line, and the guide groove 36 that supports the rear (left in the figure) roller 34 is a horizontal straight line in the second half and the front half is It has an inclined shape that descends diagonally. Therefore, when the stack tray 32 moves horizontally from the initial position in FIG. 1 to the rear (left in the figure) and moves from the initial position to the front (right in the figure), the rear portion of the stack tray 32 descends and moves backward. Tilt posture.
The position control of the stack tray 32 is performed by the control unit together with the punch process control, and reciprocates between the initial position and the rear position during the punch process. Also, when maintenance is performed on the punch mechanism or when punching is not performed, the paper is moved to the forward position and is tilted backward. By extending the interval between the paper tables 27, paper fed from a copying machine or the like is Without passing through the part 4, it is discharged to the lower side.

  As shown in FIG. 4, the paper table 27 is a pair of left and right laterally movable members that support the left and right sides of the back side of the paper P during the punching process, and slide to the left and right after punching to open the paper P. Drop onto stack tray 32. A hatched rectangular part 37 shown on the paper table 27 is a paper alignment slider that slides to the left and right separately from the paper table 27. The front edge portion of the front table 31 is formed in a comb shape to avoid interference with the hollow punch pin 9, and the hollow punch pin 9 is located in the groove of the comb tooth.

  Next, the operation of the punch device 1 will be described. 3 and 4, the punch block 7, the die block 8, the stack tray 32, and the front table 31 are in the initial position, and as shown in FIG. 4, the paper table 27 is in the initial position with the interval reduced, the paper alignment slider 37. Is in the initial position with an increased spacing. Then, when paper is fed from the copying machine or the like to the punching device 1, the paper feed roller 29 pulls the paper P in between.

  Next, as shown in FIGS. 5 and 6, the paper feed brush 30 rotates to feed the paper P to a predetermined position, and the paper alignment slider 37 reduces the interval so that the paper P is sandwiched from both the left and right sides. Align to position.

  Subsequently, as shown in FIG. 7, the die block 8 is driven downward to punch a punch hole by sandwiching the paper P between the die block 8 and the punch block 7, and the hollow punch pin 9 is stuck in the paper P, as described above. The circular paper piece punched into the hollow punch pin 9 is pushed into the hollow punch pin 9 by the pin 11 in the circular hole 10 of the die block 8. Then, as shown in FIG. 8, the paper table 27 extends the interval, and the front table 31 rotates downward to retract from the paper support position.

  As a result, as shown in FIG. 9, the paper P falls on the stack tray 32 while being stuck in the hollow punch pins 9, the paper table 27 is reduced in spacing as shown in FIG. 10, and the front table 31 is moved upward. While rotating, the paper alignment slider 37 expands the interval and returns to the same initial state as in FIG.

  Thereafter, the punching process described above is repeated, and a plurality of sheets of paper P are stacked on the stack tray 32 while being stuck in the hollow punch pins 9 as shown in FIG. Then, after the punching process for one set of paper is completed, the punch block 7 is lowered as shown in FIG. 12, and the hollow punch pins 9 are pulled out from the punch holes of the one set of paper P. As shown in FIG. 32 can move forward and be delivered to the downstream stapling device or bind processing device with the punch holes accurately aligned.

  The present invention is not limited to the above-described embodiment, and various modifications are possible within the technical scope of the present invention, and it is natural that the present invention extends to those modifications.

Side surface sectional drawing of a punch apparatus. Front sectional drawing of a punch apparatus. Side surface explanatory drawing of a punch mechanism part and a paper feed mechanism part. Plane explanatory diagram of a punch mechanism and a paper feed mechanism. Side surface explanatory drawing of a punch mechanism part and a paper feed mechanism part. Plane explanatory diagram of a punch mechanism and a paper feed mechanism. Side surface explanatory drawing of a punch mechanism part and a paper feed mechanism part. Plane explanatory diagram of a punch mechanism and a paper feed mechanism. Side surface explanatory drawing of a punch mechanism part and a paper feed mechanism part. Plane explanatory diagram of a punch mechanism and a paper feed mechanism. Side surface explanatory drawing of a punch mechanism part and a paper feed mechanism part. Side surface explanatory drawing of a punch mechanism part and a paper feed mechanism part. Side surface explanatory drawing of a punch mechanism part and a paper feed mechanism part.

Explanation of symbols

1 Punch device
4 Punch mechanism
5 Paper feed mechanism
6 Slide guide shaft
7 Punch block
8 die block
9 Hollow punch pin
10 hole
11 pin
13 Punch drive shaft
14 Motor
15 gears
16 gears
17 Gear
18 gears
19 Crankshaft
20 axes
21 links
22 Crankshaft
24 axes
25 links
26 Motor
27 Paper table
28 Paper guide cover
29 Paper feed roller
30 paper feed brush
31 Front table
32 Stack tray
33 Laura
34 Laura
35 Guide groove
36 Guide groove
37 Paper alignment slider

Claims (4)

A punching device comprising a punching mechanism unit, a paper feeding mechanism unit for continuously feeding paper to the punching mechanism unit, and a paper aligning slider for aligning the paper at a fixed position , wherein the punching mechanism unit is located under the paper A punch located at the top of the punch, a die disposed above the punch and facing the punch, a drive mechanism for lowering and raising the die, and a drive mechanism for lowering and raising the punch. After the die is lowered and raised sequentially with respect to the paper to be fed, punch holes are formed, and the punch pierces the paper , and after the punching process is completed for one set of paper, the punch is lowered and 1 A punching device comprising a control means for pulling out a punch from a punched hole of a set paper.   A stack tray for receiving the paper punched by the punch mechanism and a stack tray moving means are provided, and after the punching process is finished for one set of paper, the punch is lowered and punched from the punch hole of the one set of paper. 2. A punching apparatus according to claim 1, further comprising a control means for moving the stack tray and conveying a set of paper on the stack tray to a post-processing apparatus such as a stapler apparatus or a binder apparatus.   3. The punch apparatus according to claim 1, further comprising a position correcting means for correcting a lateral position of the paper by sandwiching the paper fed to the punch mechanism from the left and right by the paper feeding mechanism.   The punch has a hollow cylindrical shape, a pin is provided in the center of a circular hole of a die into which the punch is fitted, and a circular paper piece punched by the punch and the die is configured to fall downward through the central hole of the punch. Item 3. The punching device according to Item 1 or 2.

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