JPH0551577U - Electric stapler - Google Patents

Abstract

(57) [Summary] [Purpose] A mechanism that fixes the magazine 2 to the base 1 and spells it. A face plate 15 having a guide groove 7 for receiving a molding needle a1 molded by a forming means 3 is formed at a tip end of a guide passage 2b fixed to a base 1 so as to be slidable along a needle ejection direction. The face plate 15 and the driver are driven downward by the driving means 9, and the molding needle a1 is fed into the guide groove 7 by the driver sliding along the face plate 15.
In addition, the forming needle a1 is ejected from the guide groove 7 toward the binding sheet 27. The face plate 15 is always urged upward by a spring, and the face plate 15 carries a supporter 21 that supports the crown portion 30 of the molding needle a1.
It is preferable that the face plate 15 descends against the spring force with the needle supporting the needle.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric stapler that can be spelled without moving the magazine up and down.

[0002]

[Prior art and its problems]

 In the conventional electric stapler, the magazine containing the needles was mounted so that it could swing up and down with respect to the base, so during the binding operation, the driver is driven downwards with respect to the binding base on which the binding sheets are placed. At the same time, the magazine is moved downward, the needles in the magazine are ejected downward by the above-mentioned driver to penetrate the spelling paper, and it is bent by the clincher means of the binding table. After the spelling operation is completed, the magazine moves up together with the driver and returns to the original upper position.

In the electric stapler having the above structure, a connecting needle formed by connecting straight unshaped needles in a sheet shape is housed in a magazine, and a leading plate is driven by a forming plate that is driven downward together with a driver for each binding operation. It is configured to be bent into a U-shape, sent out to the front (position below the driver), and then ejected by the driver at the time of the next spelling operation.

However, in such a structure, there is a drawback in that the durability performance deteriorates because the magazine moves up and down violently, and the connecting portion between the adjacent needles in the sheet-like needle is divided and broken in the middle. Since the magazine oscillates, the lower end position of the magazine differs depending on the thickness of the paper, so the position when the driver strikes the needle is slightly different, which causes misalignment, causing the needle to fall during ejection and spelling failure May occur. There is a lot of noise.

On the other hand, a method of fixing the magazine may be considered, but in this case, since a space is created between the magazine and the spelled paper, a needle ejected below the magazine by the driver is used. There is a problem that the support guide is insufficient and the needle buckles or the needle falls onto the paper.

[0006]

[The purpose of the device]

 The present invention solves the problems described above, provides a fixed magazine, and provides an electric stapler that can reliably guide and guide the needle until the completion of spelling without dropping the needle and can reliably perform spelling operation. The purpose is to do.

[0007]

[Means for achieving the purpose]

 To achieve the above object, an electric stapler according to the present invention supplies an unmolded needle accommodating portion fixed to a base and an unmolded needle discharged from the accommodating portion to a molding embossing portion at a front end. A magazine provided with a guide path, forming means for forming the unformed needle supplied to the forming and ejecting section into a U-shape, a driver means for ejecting the needle after forming, and a forming needle ejected by the driver means. In an electric stapler having a clincher step for bending a leg portion, a face plate having a guide groove formed at a tip end portion of the guide path for receiving a forming needle formed by the forming means is provided along a needle ejection direction. A driver that slides along the face plate while driving the face plate and driver downward by the drive means. After feeding the molding needle into the guide groove, the face plate and the molding needle are moved toward the binding paper, and then the molding needle is ejected from the guide groove toward the binding paper. To do.

The face plate is always biased upward by a spring, and is supported by the face plate and advances into the guide groove to support the crown portion of the needle after molding. It is preferable that the face plate descends against the spring force with the supporter supporting the needle in the guide groove.

[0009]

According to the above-mentioned structure, the unformed needle in the magazine supplied to the formed and ejected portion at the front end of the guide path is formed into a U shape by the forming means, and the formed needle is spelled by the driver means. It is ejected toward the paper and fed into the guide groove. Along with the driver means, the face plate slides along the ejection direction to abut the spelled paper and stop. Therefore, the molding needle in the guide groove is also in the correct posture. The driver means is further driven downward, and the leg portions of the forming needle are pierced by the clincher means after penetrating the binding sheet, and the binding is achieved. After that, the face plate moves upward together with the driver means to return to the original position, and the next spelling is prepared.

When the face plate is always urged upward by a spring and a supporter is carried on the face plate, when the forming needle passes through the guide groove of the face plate, The lower surface of the crown portion abuts on the upper surface of the supporter and is further pushed down by the driver means while being supported by the supporter so as not to fall. In this state, the face plate further descends against the spring force, so that the posture of the forming needle is correctly maintained and penetrates the binding sheet, and finally the legs are bent by the clincher means to achieve binding. After that, when the driver means moves upward, the face plate also returns to the original position on the upper side by the spring.

As described above, since the magazine is fixed to the base and does not move up and down as in the conventional case, the sheet-shaped unformed needle does not break in the middle, noise is reduced, and durability is also improved. improves.

[0012] Furthermore, the ejection direction in which the driver ejects the forming needles is also always perpendicular to the binding paper, so that there is no inconvenience such as the forming needles rolling during the ejection, and reliable spelling can always be achieved.

Further, since the forming needle ejected from the magazine by the driver is supported by the guide groove and the supporter until reaching the binding sheet, it is preferable that the forming needle falls from the magazine at the time of ejection to cause a spelling defect. It can be prevented.

[0014]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a perspective view showing a front portion of an electric stapler, and Fig. 2 is a structural explanatory view seen from a side thereof. The electric stapler is fixed to a base 1. Magazine 2, a forming means 3 for forming the unformed needle a in the magazine 2 into a U-shape, a driver means 4 for ejecting the needle after molding, and a leg portion of the molded needle ejected by the driver means 4. And a clincher means 5 for bending.

The magazine 2 is provided with a housing portion 2a for the unformed needle a and a guide path 2b for guiding the unformed needle a discharged from the housing portion 2a to the molding ejection portion at the front end. An unformed needle a in which straight needles are connected in a sheet shape is accommodated in a stacked state in the other stage, and is fed to the guide path 2b in order from the discharge port at the lower end front face to the guide route 2b by the feeder. It is configured to be sent to the molding and embossing section 6 at the front end. The molding and embossing section 6 provided at the front end of the guide path 2b is composed of a molding section 6a and a embossing section 6b. The anvil 26 (see FIG. 3) is arranged at the lower part of the molding part 6a, and the forming means 3 is arranged at the upper part thereof. A guide groove 7 described later is formed in the lower portion of the embossed portion 6b, and the driver means 4 is arranged in the upper portion thereof.

The forming means 3 and the driver means 4 are integrally connected by a holder 8, and the holder 8 is linked to the driving means 9. The drive means 9 is composed of a drive link 10 connected to the holder 8 and a drive mechanism 11 for driving the rear end of the drive link 10. That is, the drive link 10 is swingably arranged on both outer sides of the side wall 1a of the base 1, and the projections 8a at both ends of the holder 8 are provided at the central portion in the engagement holes 13 formed at the front end of the drive link 10. The support shaft 14 is pivotally supported by a vertically elongated slot 12 formed in the side wall 1a, and its rear end is linked to a drive mechanism 11 driven in the vertical direction. When the rear end of the drive link 10 is driven in the vertical direction by the drive mechanism 11, the drive link 10 swings around the support shaft 14, so that the front end also moves up and down. In conjunction with this, the holder 8, the forming means 3 and the driver means 4 are vertically driven.

Next, a face plate 15 is slidably arranged at the tip of the guide path 2b along the needle ejection direction. As shown in FIG. 3, the face plate 15 is disposed on the front surface of the guide path 2b to guide the vertical movement of the driver means 4, and a back plate disposed on the rear portion of the lower end of the body 15a. It is composed of a part 15b and a bent piece 15c bent backward from both sides of the lower end of the plate body 15a. A U-shaped wall 16 bent backward is formed in the center of the back plate portion 15b, and a guide groove 7 is formed between the U-shaped wall 16 and the rear surface of the plate body 15a. Further, the lower portion of the rear wall of the U-shaped wall 16 is cut out, a supporting piece 17 is formed on the upper portion thereof, and a space portion 18 is formed on the lower portion thereof. The guide groove 7 receives a molding needle molded by the forming means 3, and its upper end is opened so as to face below the driver means 4.

A bearing hole 19 is formed in the bent piece 15c, a rotary shaft 20 is borne in the bearing hole 19, and a supporter 21 is fixed to the center of the rotary shaft 20. The tip portion of the supporter 21 is arranged so as to advance into the guide groove 7 from the rear space portion 18 of the U-shaped wall 16 of the face plate 15. One end of a rotary link 22 is fixed to both ends of the rotary shaft 20, and the other end of the rotary link 22 is connected to the tip of the drive link 10 via a spring (tensile spring) 23. As a result, the supporter 21 is biased to rotate rightward in the drawing, and the upper surface of the supporter 21 abuts against the lower surface of the support piece 17 of the face plate 15 and is stopped. On the other hand, the face plate 15 is constantly biased upward by the spring 23 via the rotation link.

An auxiliary beam (tensile spring) 24 is arranged between the side wall 1 a of the magazine 2 and the upper end of the face plate 15. The auxiliary spring 24 urges the face plate 15 downward, but its spring force is set to be weaker than the spring force of the spring 23 that connects the drive link 10 and the rotary link 22. The state in which the face plate 15 as a whole is always spring-biased upward does not change.

The clincher means 5 is provided on the binding table 25 formed in the front part of the base 1, and guides the legs of the needle penetrating the binding sheet 27 placed on the binding table 25 so as to bend. There are a groove-shaped fixed type and a movable type in which the penetrating needle leg is bent. The one shown in FIG. 2 is movable, but any means may be used.

In the above structure, when the drive mechanism 11 is operated while the sheet-shaped unformed needle a in the magazine 2 is supplied to the tip of the guide path 2b by the action of the feeding means, the drive link 10 swings. The forming means 3 moves downward together with the holder 8 and the unformed needle a at the front end is formed in a U shape on the anvil 26. After the forming means 3 has moved up, the formed forming needle a1 is sent to the embossing section 6b, and the state shown in FIG. 4 (a) is obtained. When the drive mechanism 11 is operated again, the forming needle a1 in the ejecting section 6b is ejected toward the binding sheet 27 on the binding table 25 by the driver means 4 which is driven downward together with the holder 8. At this time, the forming needle a1 is separated from the other needles and fed into the guide groove 7. Then, when passing through the guide groove 7, the lower surface of the crown portion 30 of the molding needle a1 contacts the upper surface of the supporter 21 carried by the face plate 15, and is supported by the supporter 21 so as not to fall (see FIG. (state of (b)). When the driver member further descends, the driver member pushes the upper surface of the supporter 21 downward via the crown portion 30 of the molding needle a1, and as a result, the face plate 15 moves downward together with the driver member. At this time, if the sliding resistance with the periphery of the face plate 15 is large, the supporter 21 is rotated by the pressing force of the driver member before the face plate 15 moves, and the forming needle a1 is driven out from the guide groove 7. However, the above phenomenon is prevented by the action of the auxiliary spring 24 that constantly urges the face plate 15 downward. By the downward movement of the face plate 15, the guide groove 7 is also moved downward while supporting the molding needle a1 inside thereof, and abuts against the upper surface of the binding sheet 27 on the binding table 25 to stop, but the driver means 4 is driven by the drive link 1. Since it is further driven by 0, the forming needle a1 in the guide groove 7 is pushed by the driver member and the supporter 21 is rotated against the urging force of the spring 23, and finally comes out of the crown portion 30 of the forming needle a1 and is formed. The support of the needle a1 is released. Although the forming needle a1 loses its support by the supporter 21, it is supported by the guide groove 7 and its tip is already in contact with the binding sheet 27, so that the posture is properly maintained and it penetrates the binding sheet 27. The legs are bent by the clincher means 5 to achieve a reliable spelling. After that, the drive link 10 is driven in the opposite direction, the driver means 4 is moved upward, and the next spelling is prepared.

By the way, the stop position of the front end of the drive link 10 changes depending on whether the binding paper 27 is thick or thin. However, as shown in FIG. It is adjusted by moving up and down along. That is, normally, the support shaft 14 is located at the lowermost end of the elongated hole 12, the adjusting plate 29 is rotatably disposed between the support shaft 14 and the paper thickness adjusting spring 28, and the paper thickness adjusting spring 28 bends and adjusts. The member 29 rotates, and the upward movement of the support shaft 14 of the drive link 10 is allowed.

The driving means 9 for the face plate 15 is not limited to the example using the spring 23 and the supporter 21 described above. For example, since a frictional resistance works between the face plate 15 and the driver means 4, the face plate 15 moves up and down together with the driver means 4, and when the driver means 4 moves up and down, the face plate 15 also moves. Move up and down. It moves downward until it comes into contact with the spelling paper 27. Therefore, the face plate 15 may be driven by utilizing the frictional resistance. In this case, when the driver means 4 moves down, the face plate 15 also moves down until it comes into contact with the binding sheet 27, and the molding needle a1 is held in the correct posture until the tips of its legs contact the binding sheet 27. Therefore, a reliable spelling can be obtained. Then, when the drive link 10 is driven in the opposite direction and the driver means 4 moves upward, the face plate 15 also returns to the original position together with the driver means 4.

The means for holding the molding needle a 1 in the guide groove 7 of the face plate 15 is not limited to the supporter 21 described above. For example, the upper opening of the guide groove 7 may be wide and the middle part may be narrow so that the molding needle does not drop.

As described above, according to the electric stapler, since the magazine 2 is fixed to the base 1 and does not move up and down as in the conventional case, the sheet-shaped unformed needle a is not broken in the middle. , Noise is reduced and durability is improved.

Further, since the ejection direction of the driver for ejecting the forming needle a1 is also always perpendicular to the binding sheet 27, there is no inconvenience such as the forming needle a1 rolling at the time of ejection, and reliable binding is always achieved. it can.

Further, since the forming needle a1 ejected from the magazine 2 by the driver is supported by the supporter 21 until it reaches the binding sheet 27, the forming needle a1 may drop from the magazine 2 at the time of ejection to cause spelling failure. Can be effectively prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing a front portion of an electric stapler according to the present invention.

FIG. 2 is a structural explanatory view of the electric stapler as viewed from the side.

FIG. 3 is an exploded perspective view of a main part of the electric stapler.

4 (a), (b) and (c) are explanatory views of an operating state of the electric stapler.

[Explanation of symbols]

 a Unformed needle a1 Formed needle 1 Base 2 Magazine 2b Guideway 3 Forming means 4 Driver means 5 Clincher means 6 Forming embossing section 7 Guide groove 15 Face plate 21 Supporter 27 Spelling paper 30 Crown section

Claims (2)

[Scope of utility model registration request] 1. A magazine, which is fixed to a base and has an accommodating portion for an unmolded needle and a guide path for supplying an unmolded needle discharged from the accommodating portion to a molding embossing portion at a front end, and the molding embossing. A motor equipped with a forming means for forming an unformed needle supplied to the portion into a U-shape, a driver means for ejecting the needle after forming, and a clincher means for bending the leg portion of the formed needle ejected by the driver means. In a stapler, a face plate having a guide groove for receiving a molding needle formed by the forming means is formed at a tip end portion of the guide path so as to be slidable along a needle ejection direction, and a face plate and a driver are driven. After being driven downward by the means and being fed into the guide groove by the driver that slides along the face plate, Spelling the face plate and the molding needles toward the sheet is moved, the electric stapler, wherein a punched toward Thereafter the molded needle from the guide grooves to the sheets of paper. 2. The face plate is always spring-biased upward, and a supporter that is carried by the face plate and advances into the guide groove to support the crown portion of the needle after molding is provided. The electric stapler according to claim 1, further comprising: a face plate that is configured to descend against the spring force while the supporter supports the needle in the guide groove.