JPH0663342U - Electric stapler control mechanism - Google Patents

Abstract

(57) [Summary] [Structure] On the magazine unit 1 side, the magazine unit 1 and the clincher unit 4 are moved in such a manner that the lower face of the magazine unit 1 is brought into contact with the surface of the binding sheet 5 while the magazine unit 1 and the clincher unit 4 are aligned vertically.
A drive mechanism for driving the driver plate 6 is provided, a drive mechanism for driving the movable clincher 22 to be bent is provided on the clincher portion 4 side, and the movable clincher 22 is provided when the leg portion b of the staple penetrates the binding sheet 5.
The control means for starting the operation of the drive mechanism is provided. [Effect] The magazine unit 1 and the clincher unit 4 are provided with independent drive mechanisms, the magazine unit 1 side operates, and when the staple penetrates the binding sheet 5, a signal is output from the control means to drive the clincher unit 4 side. Since the mechanism is activated, good spelling can always be achieved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention also relates to a control mechanism for controlling the operation of the magazine section and the clincher section in an electric stapler having a magazine section for ejecting staples and a clincher section having a movable clincher for bending the legs of the ejected staples separately. Of.

[0002]

[Prior art and its problems]

 In a conventional electric stapler with a movable clincher, the staple driving side (magazine side) and the clincher side are integrally attached to a frame, and the driving clincher is driven by a driving mechanism on the driving side.

However, since the magazine unit is a system that rotates about a fulcrum, the driver plate provided in the magazine unit also operates so as to draw an arc when the staples are ejected toward the clincher unit. Therefore, when the thickness of the paper for binding is small, the driving angle of the tip of the plate-shaped driver plate with respect to the surface of the paper is close to a right angle, and the position where the tip of the driver plate contacts the surface of the paper is also close to the fulcrum. However, when the thickness of the sheet is large, the driving angle of the driver plate with respect to the surface of the sheet becomes shallow, and the position where the leading end of the driver plate abuts the surface of the sheet becomes far from the fulcrum.

As described above, in the stapler of the type in which the driving portion is rotated and driven, since the penetration of the staple by the driver plate cannot be accurately grasped by the rotation speed of the electric motor, the operation timing of the movable clincher is determined. It was easy to get crazy.

[0005]

[The purpose of the device]

 The present invention solves the above-mentioned drawbacks and realizes accurate spelling regardless of the thickness of the paper by bending the legs of the staple through the driver plate with respect to the paper and then bending the legs with a movable clincher. It is an object of the present invention to provide a control mechanism for an electric stapler that can be operated.

[0006]

[Means for achieving the purpose]

 In order to achieve the above-mentioned object, a control mechanism of an electric stapler according to the present invention comprises a magazine part having a driver plate for ejecting staples supplied from a staple storage part, and a movable clincher for bending leg parts of the ejected staples. And a clincher unit having a clincher unit. The magazine unit and the clincher unit are moved so that the lower surface of the magazine unit is brought into contact with the surface of the spelled paper while the magazine unit and the clincher unit are vertically aligned. A drive mechanism for driving the movable clincher is provided on the clincher section side, and a control mechanism for starting the drive mechanism of the movable clincher when the driver plate penetrates the binding sheet is provided on the clincher section side. It is characterized in that means are provided.

[0007]

[Function and effect of the device]

 According to the above configuration, the magazine unit operates by the drive mechanism on the magazine unit side until it comes into contact with the front surface of the binding sheet, and the leg portions of the staple ejected by the driver plate penetrate the binding sheet. At this time, the drive mechanism of the clincher section is operated by the control means to operate the movable clincher, the legs of the staple are bent, and the stapling is completed.

As described above, the magazine unit and the clincher unit are provided with independent drive mechanisms, the magazine unit operates, and when the staple penetrates the bound paper, a signal is output from the control unit to drive the clincher unit. Since the mechanism is activated, there is little effect of variations in the rotation speed of the electric motor, and good spelling can always be achieved.

[0009]

【Example】

 FIG. 1 shows an electric stapler. The electric stapler bends a magazine unit 1 in which a magazine main body 1a for ejecting staples in a staple storage unit is supported by a frame 2 and a leg portion of staples ejected from the magazine unit 1. The clincher unit 4 and the clincher unit 4 are vertically separated.

The frame 2 is provided with a drive mechanism that moves the magazine unit 1 so as to contact the binding paper 5 and drives the driver plate 6 to be driven out. In this drive mechanism, a cam 10 is fixed to a drive gear 9 linked to an electric motor 7 via a reduction gear 8, and a drive link 11 supported by a support shaft 16 on both left and right side walls of the frame 2 is attached to the cam 10. The rear end is engaged, and the front end of the drive link 11 is connected to the holder 14 that holds the forming plate 13 and the driver plate 6 via the connecting shaft 12.

The staples are formed by adhesively connecting straight staple materials in a sheet shape, and are stacked and housed in a cartridge 15 mounted in the magazine unit 1. The sheet-shaped staples a in the cartridge 15 are sent to the front end of the magazine unit 1 in order from the lowest stage, and after being formed into a U shape by the forming plate 13, the driver plate 6 lowers the front end of the magazine unit 1. Struck out from.

Since the mechanism from the feeding of the cartridge 15 and the staples in the cartridge 15 to the forming and punching of the staples is the same as the mechanism provided in the known electric stapler, the description thereof will be omitted.

As shown in FIG. 3, vertically long vane plates 18 are formed in front of and behind both side walls of the magazine body 1 a of the magazine unit 1, and convex portions 19 are formed on the sides of the vane plates 18. Is being formed. On the other hand, vertically long guide holes 20 which are long in the vertical direction are formed through both side walls of the frame 2. Then, the convex portion 19 of the magazine portion 1 is slidably engaged with the vertically elongated guide hole 20 of the frame 2, whereby the magazine body 1a is supported so as to be vertically movable along the vertically elongated guide hole 20 with respect to the frame 2. It

Next, the clincher section 4 is provided with a movable clincher 22 on a binding table 21 on which the leading edge of the binding sheets 5 is placed. The clincher section 4 is provided with a drive mechanism for the movable clincher 22. . This drive mechanism is driven by an electric motor 23 via a reduction gear 24, a drive gear 25, a cam 26 fixed coaxially with the drive gear 25, and a cam 26 rotating so as to swing vertically. 4A, the free end of the drive link 27 is disposed below the movable clincher 22 so as to face it. As a result, when the drive link 27 swings, the movable clincher 22 is turned up and down, and when it is turned up, the leg portion b of the staple is bent.

Further, there is provided control means for starting the operation of the drive mechanism of the movable clincher when the leg portion b of the staple penetrates the binding sheet 5.

This is configured such that when the driving mechanism of the driver plate 6 is activated and the leg portions of the staples penetrate the minimum number (two sheets) of the binding sheets 5, the operation mechanism of the movable clincher 22 is activated. ing. The position of the driver plate 6 is determined by the rotation angle of the cam 26 from the initial position. Therefore, when the encoder detects a predetermined angle (for example, 120 °), a penetration signal is output and the electric motor 23 of the movable clincher 22 is operated. You can set it as follows. When the number of sheets of spelling paper 5 is large, as shown in FIG. 4 (b), the driver plate 6 can penetrate the sheet of spelling paper 25 with a smaller movement amount than when the minimum number of sheets. That is, since the rotation angle of the cam 26 has not reached 120 ° at the time when the leg portion b of the staple penetrates the binding sheet 5, the cam 26 is movable after a short time has elapsed (after reaching 120 °). Since the clincher 22 is driven to bend the staple leg, there is no timing problem.

The magazine unit 1 and the clincher unit 4 are configured so as to be movable in the horizontal direction with each other. However, during binding, an alignment mechanism (not shown) that makes the magazine unit 1 and the clincher unit 4 correspond to each other vertically. No) is provided.

According to the above-mentioned configuration, the magazine unit 1 and the clincher unit 4 are vertically aligned, the spelling paper 5 is inserted between the magazine unit 1 and the clincher unit 4, and then the magazine unit 11 is driven. By operating the electric motor 7 of the mechanism, the cam 10 rotates together with the reduction gear 8, so that the rear end of the drive link 11 is pushed up by the cam 10 and swings around the support shaft 16 to drive the drive link 11. The front part operates downward, and the connecting shaft 12 is also driven downward (see FIGS. 2 and 3). For this reason, the driver plate 6 of the driving device is also driven downward, but since a frictional force acts between the components of these driving devices and the main body 1a of the driving device, the magazine main body 1a faces the frame 2. Then, it is guided along the vertically long guide hole 20 so as to move downward in a direction substantially orthogonal to the binding sheet 5.

The magazine main body 1 a descends until it comes into contact with the surface of the spelling paper 5, but the driver plate 6 is further descended by the drive link 11, so that the leg portion b of the staple ejected by the driver plate 6 is separated from the binding paper 5 by the drive plate 11. Penetrate through. At this time, a signal is sent from the control means to operate the electric motor 23 of the drive mechanism of the clincher section 4, which causes the cam 26 to rotate and the drive link 27 to swing to operate the movable clincher 22 to staple the stapler. The leg b is bent to complete the spelling.

The bound paper 5 that has been bound can also be discharged by passing between the magazine unit 1 and the clincher unit 4. After the stapling operation, the drive link 11 swings in the opposite direction according to the rotation of the cam 10, so that the magazine unit 1 also moves upward.

As described above, since the magazine unit 1 operates in the direction orthogonal to the surface of the binding sheet 5, the driver plate 6 is moved in the direction orthogonal to the binding sheet 5 regardless of the thickness of the binding sheet 5. , And the center position of the staple with respect to the binding paper 5 is always the same.

Moreover, the magazine unit 1 and the clincher unit 4 are provided with independent drive mechanisms, the magazine unit 1 side is operated, and when the staple penetrates the binding sheet 5, a signal is output from the control means to output the clincher. Since the drive mechanism on the side of the section 4 is activated, the influence of variations in the rotation speed of the electric motor 7 is small, and good spelling can always be achieved.

The operation control mechanism of the magazine unit 1 and the clincher unit 4 of the present invention can also be applied to an electric stapler in which the magazine unit 1 and the clincher unit 4 are integrated.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a state before operation of an electric stapler according to the present invention.

FIG. 2 is an explanatory diagram showing an operating state of the electric stapler.

FIG. 3 is an explanatory diagram of a vertically moving state of the magazine unit.

FIG. 4A and FIG. 4B are explanatory diagrams of a binding state when the binding sheet is thin and thick, respectively.

[Explanation of symbols]

 1 Magazine part 4 Clincher part 5 Spelling paper 6 Driver plate 22 Movable clincher

Claims (1)

[Scope of utility model registration request] 1. A magazine part provided with a driver plate for ejecting staples supplied from a staple storage part, and a clincher part having a movable clincher for bending legs of the ejected staples are separately provided, and the magazine part side is provided. Is provided with a drive mechanism that drives the lower surface of the magazine part so as to contact the surface of the binding paper with the magazine part and the clincher part corresponding to the upper and lower sides, and that drives the driver plate. An electric stapler control mechanism comprising: a drive mechanism for bending and driving the movable clincher, and a control means for activating the drive mechanism of the movable clincher when the legs of the staples penetrate the binding sheets.