JP2003170404A - Electric stapler - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stabilize feed of paper by making a slot of a paper table unnecessary in a stapler built-in type copying machine for sewing a plurality of parts by crossly moving an electric stapler. <P>SOLUTION: A leaf spring 59 is fitted by facing it in front to an upper part inside a staple cartridge 51 and a staple guide 60 is fitted to a tip of the leaf spring 59. A front and rear freely slidable slider 61 is provided below a top plate part 58. When the slider 61 is pushed in front with a staple feed mechanism, the slider 61 pushes the leaf spring 59, the staple guide 60 rises to be inserted into a hole 23 of the paper table 2 and sews paper by holding it together with an upward clincher. Since the staple guide 60 is evacuated below the paper table 2 in a stand-by condition, the motor operated stapler can be cross moved without forming a slot on the paper table and an end part of the paper goes into the slot to enable a fear of bringing about a hindrance to feed of the paper to be solved. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable electric stapler incorporated in a copying machine, and more particularly to an electric stapler which facilitates smooth paper feeding.

[0002]

2. Description of the Related Art In a copying machine having a built-in electric stapler, a plurality of electric staplers are used to bind a plurality of sheets of paper at the same time, and one electric stapler is moved by a feeding mechanism. There is a case where a plurality of places are sequentially bound. Further, for the sake of collation, in a copying machine configured such that the copy surface of the paper is on the lower side and stacked on the paper table, the driver unit of the electric stapler is used in order to penetrate the staples from the bottom to the top of the paper. It is placed under the table and the clincher unit is placed on the paper table. The staple guide of the driver unit is inserted into the hole formed in the paper table from below and comes into contact with the paper surface, and the clincher unit at the upper part descends to pinch the paper on the paper table together with the staple guide.
The legs of the staple penetrating the paper from below are bent by a clincher.

As described above, in order to sandwich the paper on the paper table by the staple guide of the driver unit and the clincher unit, the staple guide enters the hole of the paper table, and one electric stapler is laterally moved by the feeding mechanism. In such a copying machine, an oblong hole is formed in a lateral direction on a paper table, and a staple guide of a driver unit moves in the oblong hole. Therefore, when the paper is sent to the paper table through the copying process,
The leading edge of the paper may be caught in the long hole of the paper table to cause a paper feeding error. Further, since the elongated hole is formed in the paper table, the flexural strength of the paper table is lowered. Therefore, it is desirable that the size of the hole is as small as possible.

Therefore, there arises a technical problem to be solved in order to eliminate the risk of paper feeding failure by eliminating the oblong hole of the paper table in the movable stapler, and the present invention solves the above problems. To aim.

[0005]

DISCLOSURE OF THE INVENTION The present invention is proposed in order to achieve the above-mentioned object, and two linear guide members are arranged in parallel with each other with a paper table interposed therebetween, and one linear guide member is provided with a clincher. In the electric stapler in which the unit is mounted, the driver unit is mounted on the other linear guide member, the front surface of the driver unit and the front surface of the clincher unit are opposed to each other, and the clincher unit and the driver unit are caused to travel synchronously by the synchronous movement mechanism, A staple guide for maintaining the posture of the staple when driving the staples is attached to the driver unit so that it can be raised and lowered, and a staple guide elevating mechanism that interlocks with the driver drive mechanism is provided. Enter the through hole of the table and Sandwiching the paper with tea unit, in which the staple guide after completing the stapling is to provide an electric stapler which is characterized by being configured so as to retreat from the hole. Further, the present invention provides an electric stapler in which the above-mentioned staple guide is provided in a staple cartridge, and the staple guide elevating mechanism interlocking with a driver driving mechanism elevates and lowers the staple guide.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings. Figure 1 is a front view of the electric stapler,
Fig. 2 is a side view, Fig. 3 is a sectional view taken along the line AA in Fig. 1, and Fig. 3 shows the clincher unit and the driver unit in the initial positions (left).
And the state of being moved to the diagonal binding position (right) are described in the same drawing. In the figure, 1 is a frame, 2 is a frame 1
A clincher unit 3 is arranged above the paper table 2 and a driver unit 4 is arranged below the paper table 2,
The frame 1 is engaged with linear guides 5 provided on the ceiling surface and the inner bottom surface of the frame 1, and moves between an initial position on the left side and a diagonal binding position on the right side.

Clincher unit 3 and driver unit 4
The traveling mechanism and the rotating mechanism are of the same structure, and the shaft provided in the central portion of the slide base 6 engaged with the linear guide 5
The clincher unit 3 and the driver unit 4 are attached to the clincher unit 7, and the clincher unit 3 and the driver unit 4 can rotate in the horizontal direction.

As shown in FIGS. 1 and 2, a motor 8 for moving the stapler is arranged at the left end of the frame 1, and the reduction gear train is
Gear pulleys 12 are attached to both upper and lower ends of a vertical drive shaft 11 to which a gear 10 at the final stage of 9 is attached. Upper gear pulley 12
Both ends of the timing belt 14 wound around the driven gear pulley 13 disposed on the upper right end of the frame 1 are fastened to the slide base 6 supporting the clincher unit 3, and the gear pulley 12 below the drive shaft 11 and the frame. Both ends of the timing belt 14 wound around the driven gear pulley 13 arranged at the lower right end of 1 are fastened to the slide base 6 supporting the driver unit 4, and the clincher unit 3 and the driver unit 4 travel in synchronization. A stapler moving mechanism is provided.

As shown in FIGS. 2 and 3, slideways 15 parallel to the linear guides 5 are arranged in front of the upper and lower linear guides 5, respectively. The two slideways 15 fixed to the ceiling surface and the inner bottom surface of the frame 1 are smooth sliding guide members, and are the rear surface (upper side in FIG. 2) of the clincher unit 3 where the clincher is incorporated and the driver unit 4 having the driver incorporated. It is in contact with the back surface (bottom in Fig. 2) of the part and receives the reaction force when the driver ascends to eject staples and the reaction force when the clincher descends and bends the stapler in the entire range of movement of the stapler. .

Next, the stapler rotating mechanism will be described. Figure
As shown in FIG. 3, the slide base 6 is provided with 45-degree arc-shaped guide grooves 16 having the shaft 7 as the radial center, and both ends of the guide groove 16 are formed with catch portions 16a recessed in the radial center direction. . As shown in FIG. 2, the head of the swing pin 18 attached to the bracket 17 in the frame of the clincher unit 3 and the driver unit 4 is engaged with the guide groove 16 of the slide base 6. The swing pin 18 can be tilted about a mounting point as a fulcrum, is maintained in an upright posture by a spring 18a, and acts as a click-stop mechanism that fixes the clincher unit 3 and the driver unit 4 at a 0-degree position or a 45-degree rotation position. . That is, when the clincher unit 3 and the driver unit 4 have a rotation angle other than the 0-degree position or the 45-degree rotation position shown in FIG. 3, the swing pin 18 tilts and elastically contacts the inner peripheral surface of the guide groove 16, and the clincher unit When 3 and the driver unit 4 are turned to the 0 degree position or the 45 degree rotation position, the swing pin 18 engages with the catch portion 16a at the right end or the left end of the guide groove 16 by the restoring force of the spring 18a, and returns to the upright posture, and the clincher. The unit 3 and the driver unit 4 are fixed.

Clincher unit 3 and driver unit 4
The front edge (upper side in FIG. 3) of each base plate 19 (the plate that contacts the slide base 6) of the 0 degree claw portion 20 protruding forward and the 45 degree claw portion 21 projecting forward 45 degrees rightward
Are formed, and the distances of the 0-degree claw portion 20 and the 45-degree claw portion 21 from the shaft 7 are substantially equal. As shown in FIGS. 2 and 3, stopper pins 22 for rotating the clincher unit 3 and the driver unit 4 are fixed to the ceiling surface and the inner bottom surface of the frame 1. The stopper pin 22 is located in the vicinity of the right end of the traveling range of the clincher unit 3 and the driver unit 4, and when the clincher unit 3 and the driver unit 4 are moved to the right side, the stopper pin 22 is set to 0 as described above.
It is provided at a position in contact with the side surface of the claw portion 20.

The electric stapler is controlled by the control section of the copying machine to perform spine binding for binding two points on one side of the paper or diagonal binding for stapling the corners of the paper at an angle of 45 degrees. When one copy set of paper P is sent from the copying mechanism section to the paper table 2, in the case of the back binding mode, the stapler is driven at the position A at the left end shown in FIG. 3, and the clincher unit 3 and the driver unit 4 are driven by the stapler moving mechanism. Move to the B position on the right and strike the staple. The paper table 2 is formed with holes 23 sized to allow a forming plate of the driver unit 4 and a driver and a staple guide of a staple cartridge described later to pass through at three positions A, B and C at the right end. Incidentally, reference numeral 24 shown in FIG. 1 is a stopper for aligning the paper, and after the binding processing, it is rotated 90 degrees upward and retracted from the paper path, and the paper P is discharged.

When the diagonal binding is set, the clincher unit 3 and the driver unit 4 move from the A position to the C at the right end.
Moved to a position. At this time, immediately before reaching the C position, the 0 degree claw portion 20 of the base plate is the stopper pin of the frame 1.
When the slide base 6 moves further to the right, the clincher unit 3 and the driver unit 4 are pushed to the left by the stopper pin 22 as the slide base 6 moves to the right, and when the clincher unit 3 and the driver unit 4 rotate 45 degrees, the swing pin 18 Is the catch 1 at the left end of the guide groove 16 on the slide base 6.
It is engaged with 6a and fixed at the 45-degree rotation position.

When the stapler moving mechanism is driven in the reverse direction after the staples are driven into the paper and the clincher unit 3 and the driver unit 4 start to move to the left, the 45-degree claw portion 21 at the 0-degree rotation position hits the stopper pin 22. When the clincher unit 3 and the driver unit 4 rotate to the right and return to the 0-degree rotation position, the swing pin 18 engages with the right end catch portion 16a of the guide groove 16 of the slide base 6 to the 0-degree rotation position. At the same time as being fixed, the 45-degree claw portion 21 comes off the stopper pin 22, and the clincher unit 3 and the driver unit 4 further travel to the left and return to the A position.

FIG. 4 shows the driver unit 4 and the staple cartridge 51. The staple cartridge 51 mounted in the cartridge accommodating portion 25 of the driver unit 4 has an opening 52 formed on the back surface thereof, and the rear ends of the left and right side surfaces. The slide door 54 is engaged with the guide rail portion 53 formed in the vertical direction. A tension coil spring 55 erected on the upper and left side surfaces of the staple cartridge 51 and the slide door 54.
Thereby, the slide door 54 is pulled upward. Further, a pressure plate described later is built in the staple cartridge 51, and the pressure plate is pushed upward by a compression coil spring 56 installed on the inner bottom surface. The slide door 54 has a groove (not shown) formed at the center lower end of the front surface (the surface on the inner side of the cartridge), and the rear end of the pressure plate projects to the position of the groove, as shown in FIG. When the slide door 54 is pushed downward, the rear end of the pressure plate 57 engages with the groove and the pressure plate 57 also descends at the same time as shown in the figure.

FIG. 6 shows a state in which a staple refill paper staple pack 71 is loaded in the staple cartridge 3, and a predetermined number of staple sheets 72 are stacked and accommodated in the staple pack 71. In the staple pack 71, windows are formed on the lower surface, the upper surface in the front portion and the rear surface in the figure, and
As shown in FIG. 7, when the pushing down of the slide door 54 is released after the staple pack 71 is inserted, the pressure plate
57 enters the window on the lower surface and presses the staple sheet 72 upward, and the feed claw inside the staple cartridge 51 contacts the front portion of the upper surface of the staple sheet 72. Sliding door 54
Is pulled by the tension coil spring 55 to rise to the initial position, and the back surface of the staple pack 71 is covered.

As shown in FIGS. 8 and 9, a leaf spring 59 is attached to the lower surface of the top plate portion 58 of the staple cartridge 51 so as to face forward and obliquely downward, and a staple guide 60 is provided at the tip of the leaf spring 59. Installed. The upper end of the staple guide 60 is at substantially the same height as the upper surface of the staple cartridge 51, and the staple cartridge 51 is inserted into the driver unit.
When the staple guide 60 is attached to the position shown in FIG.
The driver unit 4 shown in FIG. 2 faces the front guide plate 26, and the passage between the front guide plate 26 and the staple guide 60 is formed by a staple and a thin plate-shaped driver 27, and the formings arranged on the left and right sides of the driver. plate
28 and anvil 29 pass.

Below the top plate portion 58 of the staple cartridge 51, there is provided a slider 61 which is slidable forward and backward, and a leaf spring 62 is attached to the front portion of the slider 61 so as to face obliquely rearward and downward. A feed claw 63 is attached to the tip.
The front portion of the leaf spring 59 to which the staple guide 60 is attached is lowered from the upper surface of the slider 61 in the initial state, and when the slider 61 moves forward, the slider 61 contacts the lower surface of the leaf spring 59 and moves the leaf spring 59 and the staple guide 60 upward. Push up. A horizontal arm 64 is attached to the slider 61, and the left and right ends of the arm 64 are attached to the staple cartridge 25.
Through the groove 65 of the. Incidentally, 66 shown in FIG. 9 is a front cover, and 67 is a staple guide table.

As shown in FIG. 8, a cam mechanism such as a gear 31, a driver cam 32, a forming cam 33, and a staple feeding cam 34 is attached to the shaft 30 of the drive mechanism portion of the driver unit 4, and the driver cam 32 and forming cam 33
Respectively drive the driver 27 and the forming plate 28 up and down. A link lever 35 for reciprocally driving the slider 60 of the staple cartridge 51 is arranged in the left and right side walls of the driver unit 4, and the staple feed is driven downward and upward by a staple feed cam 34 as shown in FIG. On the top of the cam follower 36, the link lever 35
The front end of is touching. The arm 64 attached to the slider 60 of the staple cartridge 51 engages with the upper recess of the link lever 35, and during the stapling operation, the link lever 35 pushes the arm 64 to move the slider 61 forward. The slider 61 returns to the rearward initial position.

The driver cam 32, the forming cam 33, and the staple feed cam 34, during the one-cycle stapling operation, first, the staple feed cam follower 36 descends to perform staple feed, and then drives the forming plate 28 upward. The operation timing is set so that the linear staples are formed by the vertical movement, and then the anvil 29 and the driver 27 are lifted together.

When the driver unit 4 is activated, the staple feed cam follower 36 first descends as shown in FIG. 11, and the staple feed link lever 35 urged by the tension coil spring 37 rotates counterclockwise in the figure. As a result, the arm 64 of the staple cartridge 51 and the slider
61 moves forward, the staple sheet is sent out forward by the feed claw 63, and the slider 61 hits the lower surface of the leaf spring 59 shown in FIG. 8 to push up the staple guide 60 upward, and the staple guide 60 moves to the state shown in FIG. Paper table 2 shown
Enter the hole 23. At the same time, the clincher unit 3 shown in FIG. 1 descends and pinches the paper on the paper table 2 together with the driver unit 4. Then, as shown in FIG. 11, the forming plate 28 is raised and the linear staple S
Is formed into a gate shape. At this time, the left and right claws 29b of the anvil 29 are separated by the ribs 23a on the back surface of the front guide plate 23.
Is maintained in a vertical posture in contact with, and the intermediate portion of the staple S is supported by the bent portion 25a.

After the forming is completed, the driver 27 and the anvil 29 are raised as shown in FIG. Anvil
The claws 29b of 29 are ribs 26a on the back surface of the front guide plate 26.
Forward, the forward lean regulation is released, the claw portion 25b rides on the protrusion 38a on the upper front surface of the vertical frame 38, the anvil 29 leans forward, and the bent portion 29a retracts from the passage of the driver 27. The driver 27 drives the staples completely.

Then, after the clincher of the clincher unit 3 descends and the left and right legs of the staple S are bent inward to bind the paper, the anvil 29, the forming plate 28 and the driver 27 descend and the link lever 35 staples. By retracting the slider 61 of the cartridge 51 to the initial position, the leaf spring 59 and the staple guide 60 are lowered, and the staple guide 60 retracts downward from the hole 23 of the paper table 2 to the initial position shown in FIGS. 8 and 10. Return.

When the conventional electric stapler in which the vertical position of the staple guide is constant and does not descend from the hole is laterally moved by the feeding mechanism, elongated holes connecting the stapling positions of A, B and C are formed on the paper table. However, according to the present invention, it is only necessary to form holes 23 of a required size only at each stapling position of the paper table 2 according to the present invention. 2 It eliminates the risk that the paper sent to the top will be caught in the slot.

Although the embodiment in which the elevating staple guide is provided in the staple cartridge has been described above, the invention is not limited to this, and the elevating staple guide may be provided in the driver unit. Further, various modifications are possible within the technical scope of the present invention, and it goes without saying that the present invention extends to those modifications.

[0026]

As described above, the electric stapler of the present invention is provided with a mechanism for raising and lowering the staple guide that regulates the ejection posture of the staples, and the staple guide enters the hole of the paper table to eject the paper when ejecting the staples. Since it is configured to come into contact with each other and exit from the hole of the paper table after ejection, it is necessary to provide a long hole in the paper table when constructing a movable electric stapler that moves one stapler unit with a feeding mechanism to bind multiple points of paper. Disappears. Therefore, unlike the conventional movable electric stapler, it is possible to eliminate the possibility that the end portion of the paper enters the elongated hole and interferes with the paper feeding, and the stability is improved.

[Brief description of drawings]

FIG. 1 is a front view of an electric stapler showing an embodiment of the present invention.

FIG. 2 is a side view of the electric stapler.

3 is a view taken along the line AA of FIG.

FIG. 4 is a perspective view of a staple cartridge and an electric stapler.

FIG. 5 is a perspective view showing a staple cartridge with a slide door opened.

FIG. 6 is a perspective view showing a state in which a staple cartridge is attached to a driver unit.

FIG. 7 is a perspective view showing a state in which staples are loaded in the staple cartridge.

FIG. 8 is a side sectional view of a driver unit and a staple cartridge.

FIG. 9 is a side sectional view of a driver unit and a staple cartridge.

FIG. 10 is a perspective view of the driver mechanism in an initial state.

FIG. 11 is a perspective view showing a forming process of the driver mechanism.

FIG. 12 is a perspective view showing an injection step of a driver mechanism.

[Explanation of symbols]

1 frame 2 Paper table 3 clincher unit 4 Driver unit 23 holes 34 Staple feed cam 35 Link lever 36 Staple feed cam follower 51 staple cartridge 59 leaf spring 60 staple guide 61 slider 62 leaf spring 63 Feed claw 64 arms

Claims (2)

[Claims] 1. A front surface of a driver unit in which two linear guide members are arranged in parallel with a paper table in between, a clincher unit is mounted on one linear guide member, and a driver unit is mounted on the other linear guide member. In the electric stapler in which the front of the clincher unit and the front surface of the clincher unit are opposed to each other and the clincher unit and the driver unit are synchronously moved by the synchronous movement mechanism, the staple guide for maintaining the posture of the staple when the staple is driven into the driver unit can be moved up and down. A staple guide elevating mechanism that interlocks with the mounting and driver drive mechanism is provided.When the staple driving starts, the staple guide protrudes in the staple ejection direction, enters the through hole of the paper table and sandwiches the paper with the clincher unit, and the staple guide is completed after the staple driving is completed. An electric stapler characterized by being configured to retract from the hole. 2. The electric stapler according to claim 1, wherein the staple guide is provided on a staple cartridge, and the staple guide elevating mechanism interlocking with a driver drive mechanism elevates and lowers the staple guide.