JPH10151582A - Driver device of electric stapler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve precision of an electric stapler by regulating vertical positions of a driver. SOLUTION: An adjustment screw base block 20 is installed on a forming plate 14 installed on a driver driving mechanism by a pin 15, and a T bolt 21 is installed on the adjustment screw base block 20. A T groove 31 is molded on an upper end part of a driver 13, and the T groove 31 and the T bolt 21 are fit on each other and installed on the forming plate 14. It is possible to adjust vertical positions of the driver 13 against the driver driving mechanism and the forming plate 14 by rotating the T bolt 21 by loosening a set screw 35.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driver for an electric stapler, and more particularly to a driver for an electric stapler capable of adjusting a vertical position of a driver.

[0002]

2. Description of the Related Art There are two types of electric staplers: one using staples formed in a gate shape in advance, and the other having a forming plate for bending straight staples into a gate shape and supplying the staples to a driver. In either case, a staple magazine holder is arranged above a table on which paper to be bound is placed, and one of the table and the staple magazine holder is driven to move up and down. Then, the paper is sandwiched between the staple magazine holder and the table, and the driver supporting member on which the driver is mounted is driven down from the upper standby position by the driver elevating mechanism to drive the staples on the staple guides of the staple magazine holder into the paper.

A staple penetrating the paper collides with a clincher plate arranged on a table, and is bent into a predetermined shape along a guide groove provided in the clincher plate. Further, there is a flat clinch type electric stapler which is provided with a rotating clincher instead of the fixed clincher plate, and drives the clincher to bend the staple flat after driving the staple.

In the above-mentioned electric stapler, the driver is connected to the motor via the cam and the lever, and reciprocates between the upper standby position and the lower dead center. However, the lower dead center depends on the tolerance of each component and the mounting accuracy. If the position error exceeds the allowable value, various inconveniences occur. That is, if the bottom dead center position is above the proper position, the driver's striking force is insufficient, and the staple fastening performance deteriorates. On the other hand, if the bottom dead center position is below the proper position, the driver excessively presses the staples and the paper, which causes a problem that the driver driving mechanism is overloaded.

However, the conventional electric stapler driver device cannot adjust the height of the bottom dead center position of the driver. If the error of the bottom dead center position exceeds an allowable value, adjustment work such as driver replacement is required. This is necessary, and there is a problem that it takes time and effort for assembly and maintenance.

Therefore, there arises a technical problem to be solved in order to make it possible to adjust the vertical position of the driver to facilitate assembly and maintenance, and the present invention has an object to solve the above problem. .

[0007]

SUMMARY OF THE INVENTION The present invention proposes to achieve the above object, and a plate-shaped driver is mounted on a driver supporting member mounted on a frame so as to be movable up and down, and a driver driven by a motor is provided. In a driver device of an electric stapler that drives a driver support member downward from an upper standby position by an elevating mechanism and injects staples into a clincher disposed vertically below the driver,
A driver is vertically slidably mounted on the driver support member in a certain range, and a vertical position adjustment means is interposed between the driver support member and the driver, so that the vertical position of the driver with respect to the driver support member can be adjusted freely. The present invention provides a driver device for an electric stapler.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. 1 to 3 show an electric stapler 1
The power of the motor 3 mounted on the rear part (right in FIG. 1) of the frame 2 shown in FIG. 1 is transmitted to the drive shaft 5 via the reduction gear mechanism 4 and is fitted to the drive shaft 5. 6 and a driver driving cam and a clincher driving cam (not shown), respectively.

The table driving cam 6 reciprocates the table lifting lever 7 back and forth, and raises and lowers the table support arm 9 connected to the table lifting lever 7 via a tension coil spring 8. The table 10 pivotally attached to the tip of the table support arm 9 faces a staple guide 12 below the staple cartridge 11.

In a staple cartridge 11 loaded in the front of the frame 2, a roll-shaped staple sheet in which a number of linear staples are bonded and connected is stored. The staple sheet is fed forward on the staple guide 12 in the staple cartridge 11 by a staple feeding claw (not shown) that is linked with the elevation of the driver 13, and is bent and formed into a gate shape by a forming plate 14 that moves up and down with the driver 13. Is done.

A pin 15 attached to the forming plate 14 is inserted into a long hole 16a at the front of the driver elevating lever 16, and the driver 13 and the forming plate 14 attached to the front surface of the forming plate 14 are connected to the driver elevating lever 16. Have been.

As shown in FIG. 4, the driver device includes a driver driving cam 17, a driver lifting lever 16, a driver 1
3 and a forming plate 14, and a rear end of the driver elevating lever 16 is provided with a driver driving cam 17.
When the driver drive cam 17 is driven one rotation from the initial position, the driver 13 and the forming plate 1 are rotated.
4 descends from the upper standby position and returns to the upper standby position again.

As shown in FIG. 2, a pair of left and right clinchers 18 mounted on the front portion of the table support arm 9 have their inner ends crossed, and the tip portion 19a of the clincher arm is located immediately below the crossed portion. I have. The clincher arm 19 is driven up and down by a clincher drive cam.

When paper is inserted between the table 10 and the staple guide 12 and a paper detection switch (not shown) is turned on, the motor 3 is started, the drive shaft 5 is rotated, and the table elevating lever 7 is moved as shown in FIG. The table support arm 9 is pulled up while standing up from the forward tilt state shown in FIG. And table 1
0 and the staple guide 12, the paper is pinched, the driver 13 and the forming plate 14 are lowered by the driver driving cam 17, the driver 13 drives the staple in the front row on the paper on the table 10, and the forming plate 14 is moved in the rear row. Form the staples into a gate shape.

When the driver 13 descends to reach the bottom dead center and the ejected staple leg penetrates downward through the elongated hole provided in the table 10, the tip 19a of the clincher arm starts to rise. Then, in a process in which the left and right clinchers 18 are pressed by the distal end portions 19a of the clincher arms and rotate symmetrically, the inner end faces of the clincher 18 press the left and right leg portions of the staple inward and bend.

Subsequently, when the table support arm 9 and the tip 19a of the clincher arm are lowered, the driver 13 and the forming plate 14 are raised and returned to the standby positions, respectively, the motor 3 is stopped, and the stroke of one cycle is completed. To end.

Next, the driver device will be described. FIG. 5 shows a driver device according to the second aspect, in which an adjusting screw base block 20 is mounted on a forming plate 14 as a driver supporting member, and a driver 13 is mounted via a T-bolt 21 screwed into the adjusting screw base block 20. It is.

FIG. 6 shows the forming plate 14,
Forming portions 22 projecting downward from both left and right sides are provided, and grooves 23 and 24 are provided from the center of each of the upper and lower ends toward the upper and lower intermediate portions. Forming plate 14
The left and right ends and the upper end of the side plate 25, which is bent at a right angle,
The left and right side plate portions 25 are provided with holes 27 for inserting the pins 15 in the lateral direction, and the upper side plate portions 26 are provided with holes 2 for screwing the adjusting screw base block 20.
8 is provided. Further, a pair of right and left claws 29 for positioning the driver 13 is cut and raised in the center portion, and a pin retaining claw 30 is cut and raised on the left side of the upper groove 23.

FIG. 7 shows the driver 13 having a T at the center of the upper end.
A T-groove 31 with which the bolt 21 engages is formed, and a pair of left and right long holes 32 in the vertical direction into which the claws 29 of the forming plate 14 are inserted are punched in the upper and lower intermediate portions.

As shown in FIG. 5, an adjusting screw base block 2 is provided on the side plate 26 at the upper end of the forming plate 14.
The T-bolt 21 is screwed into the vertical screw hole 33 provided at the center of the adjustment screw base block 20 from below. A slot is provided at the tip of the T-bolt 21 on the screw side (upper end in the figure), and the T-bolt 21 can be rotated in an arbitrary direction using a screw driver. The flat head of the T bolt 21 is engaged with the T groove 31 of the driver 13, and the elongated hole 32 of the driver 13 is engaged with the claw 29 of the forming plate 14. When the T-bolt 21 is rotated, the driver 13 moves up or down with respect to the forming plate 14 according to the direction of rotation. In the center of the front surface of the adjusting screw base block 20, a screw hole 34 for a locking screw is provided.
Is provided, and the T-bolt 21 is
Can be fixed in a non-rotatable state.

When the pin 15 is inserted into the elongated hole 16a of the driver lifting lever 16 and the hole 27 of the forming plate 14 at the time of assembling the driver device, the pin 15 crossing the front surface of the driver 13 and the forming plate 14
Thus, the driver 13 is held, and the driver 13 and the forming plate 14 are connected to the driver elevating lever 16.

The pin 15 has a small diameter cut at the position corresponding to the pin retaining claw 30 of the forming plate 14, and by engaging the pin retaining claw 30 with the small diameter portion 15a, the pin 15 is Forming plate 1
Fixed to 4.

Driver 13 at the time of staple driving
When the bottom dead center position is adjusted, the screw 13 is loosened by rotating the locking screw 35 and the T-bolt 21 is rotated. After the vertical position of the driver 13 is adjusted, the locking screw 35 is tightened. , The driver 13 is fixed at an appropriate position.

FIG. 8 shows a driver device according to the third aspect, in which a vertical hole 37 is provided in the center of an adjusting screw base block 36 attached to the forming plate 14, and the rotation center axis of the inclined disk cam 38 is provided in the hole 37. 38a is inserted from below. A circumferential groove 38b is formed in the upper and lower middle part of the rotation center shaft 38a, and the tip of a detent screw 39 attached to the front surface of the adjusting screw base block 36 is inserted into the groove 38b and tightened. It is fixed.
The inclined disk cam 38 has a 180-degree rotationally symmetrical shape, and the T groove 31 of the driver 13 is engaged with the inclined disk cam 38 to support the driver 13.

When the vertical position of the driver 13 is adjusted, the screw 13 is loosened and the inclined disk cam 38 is rotated as in the driver device shown in FIG. Move up or down depending on the direction. If the rotation screw 39 is tightened after adjusting the vertical position, the inclined disk cam 38 is fixed so as not to rotate, and the vertical position of the driver 13 with respect to the driver elevating lever 16 and the forming plate 14 does not change.

It should be noted that the present invention is not limited to the above embodiment, and 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. is there.

[0027]

As described above, the driver of the electric stapler according to the present invention can finely adjust the vertical position of the driver, so that the position error due to the tolerance of each component or the aging can be eliminated by adjustment. Maintenance is facilitated, and operation accuracy is improved.

[Brief description of the drawings]

FIG. 1 is a side view of an electric stapler according to an embodiment of the present invention.

FIG. 2 is a front view of the electric stapler shown in FIG. 1;

FIG. 3 is a plan view of the electric stapler shown in FIG. 1;

FIG. 4 is a side view showing the configuration of the driver device.

FIGS. 5A and 5B show a driver portion of the driver device according to claim 2, wherein FIG. 5A is a front view and FIG.

6A and 6B show a forming plate, wherein FIG. 6A is a front view, FIG. 6B is a side view, and FIG. 6C is a bottom view.

7A and 7B show a driver, wherein FIG. 7A is a front view, FIG. 7B is a side view, and FIG. 7C is a bottom view.

8 (a) is a front view, and FIG. 8 (b) is a sectional view taken along line AA of FIG. 8 (a). FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electric stapler 2 Frame 3 Motor 4 Reduction gear mechanism 5 Driving shaft 10 Table 11 Staple cartridge 13 Driver 14 Forming plate 15 Pin 16 Driver lifting / lowering lever 17 Driver driving cam 20 Adjustment screw base block 21 T bolt 31 T groove 35 Non-rotating Screw 36 Adjusting screw Base block 37 Hole 38 Inclined disk cam 38a Rotation center axis 38b Groove 39 Detent screw

Claims (3)

[Claims] A plate-shaped driver is mounted on a driver supporting member mounted on a frame so as to be vertically movable, and the driver supporting member is driven down from an upper standby position by a driver lifting mechanism driven by a motor, and is disposed vertically below the driver. In a driver device of an electric stapler for injecting staples into a clincher, a driver (13) is mounted on the driver support member (20) so as to be slidable up and down within a certain range, and a vertical position adjusting means (21) is provided on the driver support member and the driver. , 38), wherein the vertical position of the driver with respect to the driver support member can be adjusted freely. 2. A vertical screw hole (33) is formed in the driver support member (20), a T-bolt (21) is screwed into the screw hole (33) from below, and a T-groove is formed in an upper portion of the driver (13). (31) was formed, the head of the T-bolt was engaged with the T-groove, and a screw (35) for locking the T-bolt was screwed to the driver support member to constitute a vertical position adjusting means for the driver. The driver device for an electric stapler according to claim 1. 3. The rotation center axis (3) of the inclined disk cam (38).
8a), a circumferential groove (38b) is provided, a vertical hole (37) is formed in the driver support member (36), and the rotation center shaft is inserted into the hole from below, and the driver (1) is inserted.
3) Forming a T-groove (31) in the upper part, engaging the inclined disk cam with the T-groove, and screwing the screw (39) of the inclined disk cam into the driver support member; The driver device for an electric stapler according to claim 1, wherein a screw for locking is engaged with the groove (38b) of the rotation center shaft to constitute a vertical position adjusting means of the driver.