JPH0573554B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an electric stapler, and mainly relates to an electric stapler for office use for stitching stacked paper sheets.

(Prior art) Various configurations have been proposed for this type of electric stapler, but conventional electric staplers are capable of separating a large number of staples that have been bent into a U-shape in advance. The structure uses a group of block-shaped staples arranged in series.

(Problems to be Solved by the Invention) Conventional electric staplers use staple groups in the form of blocks, so it takes time and effort to load the staple groups into the staple loading section, and the staple groups also have leg staples of the same length. Since the staples are arranged in a row, it is necessary to replace the staples with different leg lengths each time depending on the thickness of the paper sheets to be stapled, which requires a lot of effort to replace the staples each time. Furthermore, after the sheets have been stapled, the leg needles are bent so as to protrude outward in an arc, which makes it easy for the folded leg needles to get caught. There is a problem in that it becomes bulky when piled up.

Therefore, the present invention was made in view of the above problems, and it is possible to form a staple from a wire rod through a series of operations, and also to enable paper sheets to be bound in an orderly manner using this staple. There is no need to pre-form staples or load staple groups, and there is no need to replace staple groups with different leg needle lengths. It is an object of the present invention to provide an electric stapler which does not cause the legs of staples to get caught or become bulky after staples are stapled.

[Structure of the invention]

(Means for Solving the Problems) The electric stapler of the present invention includes a stapler body 1
and a drum 16 provided on this stapler main body 1.
a wire rod feeding mechanism 170 that sequentially feeds out the wire rod 162 wound into three coils, a cutter mechanism 187 that selectively cuts the wire rod 162 fed from the wire rod feeding mechanism 170 into a desired length, and this cutter mechanism 187.
A needle material supplying mechanism 243 that supports a linear needle material 216 cut by a needle material and supplies the needle material 216 above the binding section, which can move forward and backward; A vertically movable needle forming/driving mechanism 6 forms the linear needle material 216 supplied into a U-shaped staple 247 and drives the staple 247 into the paper sheet P.
3, the left and right leg needles 248 of the staple 247, which is provided directly below the needle forming mechanism 63 via the paper sheet inserting section 6 and inserted into the paper sheet P, are bent and the leg needles 248 are inserted into the paper sheet P. The needle shaping mechanism 32 is provided for shaping the needle horizontally along the lower surface of the needle.

(Function) In the electric stapler of the present invention, the wire rod feeding mechanism 1
70 is activated, the wire rod 162 wound around the drum 163 is sequentially fed out to the needle material supply mechanism 243 via the cutter mechanism 187. Furthermore, for the wire rod 162 inserted through the cutter mechanism 187,
Alternatively, before inserting the wire rod 162, the cutting position of the cutter mechanism 187 is selected and set, and when the cutter mechanism 187 is operated, the wire rod 162 is cut to a desired length, and a linear needle material 216 is obtained. This needle material 216 is supplied to the needle material supply mechanism 24.
Supported by 3.

Further, when the needle material supplying mechanism 243 is operated, the needle material supplying mechanism 243 is advanced toward the upper side of the binding section, and the needle material 216 supported thereby is supplied above the binding section. Also, the needle forming driving mechanism 6
3 is activated, this needle forming driving mechanism 63 is moved downward toward the binding section, and this needle forming driving mechanism 6
A linear needle material 216 is formed by the needle molded body 64 of No. 3.
is formed into a U-shaped staple 247, and this staple 247 is inserted into the needle forming driving mechanism 6.
The left and right leg needles 248 of this staple 247 are inserted into the sheet P, and these left and right leg needles 248 are lowered by the needle driving blade 76 of No. 3 and inserted into the left and right needle shaping bodies of the needle shaping mechanism 32. 22. At the same time, the needle shaping mechanism 32 is activated, and the left and right needle shaping bodies 22 of the needle shaping mechanism 32 are operated.
is operated, and the left and right bent leg needles 248 are shaped horizontally along the lower surface of the sheet P by the left and right needle shaping bodies 22.

Further, as described above, the needle forming driving mechanism 63 is lowered, and the linear needle material 216 is formed into a U-shaped staple 247 by the needle forming body 64, and the needle material supplying mechanism 243 is lowered. The lower part of the staple 247 is opened to allow the staple 247 to be lowered by the needle driving blade 76, and the wire 162 fed out from the wire feeding mechanism 170 to the needle material feeding mechanism 243 is fed to the needle material feeding mechanism 243. 243.

Then, as described above, the staple 247 is attached to the paper sheet by the needle driving blade 76 of the needle forming driving mechanism 63.
At the same time, the cutter mechanism 187 is activated to cut the wire 162 to a desired selected length.

Further, as the needle forming driving mechanism 63 is moved upward from the binding section, the needle material supplying mechanism 243 is again advanced above the binding section, and the needle material 2 supported by it is moved upwardly.
16 is fed above the binding section in preparation for forming staples 247.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In the figure, reference numeral 1 denotes a main body of the stapler. A support base 2 is integrally provided on one side of the main body 1 of the stapler, and a support frame 3 is provided on the upper part of the support base 2.
is integrally provided to protrude outward, and is provided between the horizontal support plate 4 on the top surface of the support stand 2 and the horizontal guide plate 5 on the bottom surface of the support frame 3 as a paper sheet insertion portion. A sheet insertion recess 6 is formed as an opening, and a plate-shaped stopper 7 is vertically formed in the inner part of the sheet insertion recess 6. Further, the support plate 4 in the support stand 2
A guide piece 8 is fixed to the front and back substantially in the middle of the support plate 4, and a guide groove 9 serving as a binding portion is formed in the width direction of the support plate 4 between the front and rear guide pieces 8.

Further, the upper end portions of the front and rear guide pieces 8 of the support plate 4 are formed on the same plane as the upper surface portion of the support plate 4, and a guide body 10 is provided at the lower end portion of the front and rear guide pieces 8 of the support plate 4. It is fixed and suspended from the bottom surface of the. This guide body 10 includes front and rear guide plates 10a, 1
0b, and one of the guide plates 10a, 10b has the support plate 4 on the upper left and right sides.
A mounting piece 11 fixed to the lower surface of the housing is formed horizontally, and a generally fan-shaped housing recess 12 is formed at the upper outer side between the left and right mounting pieces 11.
A guide recess 13 is formed vertically communicating with the main part of the housing recess 13 , and a notch recess 14 is formed at the lower end of the guide recess 13 . There is a bearing recess 1 in the communication part of
5 is formed. In addition, the other guide plate 10
In b, mounting pieces 16 fixed to the lower surface of the support plate 4 are formed horizontally on the left and right parts of the upper end, and a substantially fan-shaped guide hole 17 is formed in the upper middle part between the left and right mounting pieces 16.
A bearing recess 18 communicating with the bearing recess 15 is formed in the main part of the guide hole 17, and a notch recess 19 communicating with the notch recess 14 is formed at the lower end between the mounting pieces 16. are formed, and locking pieces 20 are provided protruding from the upper left and right sides of the notch recess 19 . Then, the other guide body 10b is superimposed on the outer side of the one guide plate 10a, and these are fixed to each other by a plurality of screws 21, and a housing recess is closed by the other guide plate 10b. 12
Inside, a pair of left and right needle shaping bodies 22 are provided which are moved up and down in the guide slot 9 between the front and rear guide plates 8, and a guide recess 13 is closed by the other guide body 10b. An actuating body 23 for actuating the pair of left and right needle shaping bodies 22 is provided inside so as to be movable up and down. The pair of left and right needle shaping bodies 2
Reference numeral 2 denotes left and right support shafts 2 that are horizontally suspended between the left and right upper ends of the one guide plate 10a and the other guide plate 10b.
4 is supported at its outer end so as to be rotatable in the vertical direction, and a needle shaping groove 25 that is vertically movable in the guide groove 9 is formed on the upper surface thereof in a continuous manner from left to right. A locking piece 26 that also serves as a stopper for the left and right side edges 17a of the other guide hole 17 is protruded from the lower end, and these left and right locking pins 26 are connected to the guide hole 1 of the other guide plate 10b.
7, and a coil spring 27 is stretched between the left and right locking pins 26 and the left and right locking pins 20. Then, the left and right needle shaping bodies 22 are urged to rotate downward by the left and right coil springs 27, and the needle shaping grooves 25 are held inwardly and downwardly in preparation for bending and shaping the leg needles. has been done. Further, the actuating body 23 is formed into a vertically long rectangular plate shape, and a bearing recess 1 of the one guide plate 10a is located near the upper end of the actuating body 23.
5 and a stopper pin 28 supported by the bearing recess 18 of the other guide plate 10b projects horizontally, and has an arc-shaped stopper pin 28 formed at the lower end of the left and right needle shaping bodies 22 at its upper end. A pushing part 30 for pushing the passive part 29 is formed horizontally, and furthermore, the pushing part 30 is formed horizontally at the middle part of its lower end and communicates with the notch recess 14 of the one guide plate 10a and the notch recess 19 of the other guide plate 10b. A notch recess 31 is formed.

A needle shaping mechanism 32 is constituted by the guide slot 9, the guide body 10, the left and right pair of needle shaping bodies 22, and the operating body 23.

In addition, a sliding groove 33 is formed in the front-rear direction from the longitudinal middle part to the rear part of the guide piece 8 at the rear of the support plate 4, and this sliding groove 33 has a vertical groove for setting the binding position at the front end. It has a stopper 34, and
A sliding piece 36 made of synthetic resin having a pushing part 35 for actuating a start switch (described later) at the rear end is slidably engaged in the front and rear direction, and a locking hole 37 is provided in the middle part of the sliding piece 36. is formed. Further, an insertion groove 39 communicating with the locking hole 37 is formed in the middle of the bottom plate 38 of the sliding groove 33 in the front-rear direction.

Further, support plates 40 are fixedly and vertically disposed on the lower surface of the bottom plate 38 of the sliding groove 33 so as to face each other on the left and right sides, and between the upper ends of the left and right support plates 40, a movement that moves along the lower surface of the bottom plate 38 is provided. A plate 41 is provided so as to be movable back and forth. At the bottom of one side of this movable plate 41 is a rack 4.
2 is formed in the front-rear direction, and a bent piece 43 is formed vertically at the lower front end of the movable plate 42, and an interlocking piece 44 is formed upwardly on the upper surface portion that moves along the bottom plate 38. The interlocking piece 44 projects vertically and is inserted into the locking hole 37 from the insertion groove 39 . The sliding piece 36 is moved back and forth in conjunction with the back and forth movement of the movable plate 41. Furthermore, vertically long guide holes 45 are formed in the front parts of the left and right support plates 40 so as to face each other, and the racks 42 are inserted into the left and right guide holes 45.
A lock bar 46 that engages and disengages from the rack 42 is inserted horizontally so as to be vertically movable. It is energized as follows. Further, a rotating shaft 49 is horizontally suspended between the one support plate 40 and one side of the stapler main body 1, and a pinion 50 meshed with the rack 42 is fixed to the inner end of the rotating shaft 49. At the same time, an operating lever 51 is fixed to the outer end of the rotating shaft 49 and is operated by being located on one side of the stapler main body 1. Furthermore, a micro switch 53 serving as a start switch is fixed to the upper rear end of the support plate 4 of the support base 2, and has an opening/closing contact piece 52 that is opened and closed by the pushing portion 35 of the sliding book 36.

A binding position setting mechanism 54 adjusts the position of the stopper 34 of the sliding piece 36 back and forth using the sliding piece 36, moving plate 41, rack 42, pinion 50, lock bar 45, spring 48 and operating lever 51. It is configured.

Next, a notch recess 56 is formed in the center of the lower end of the front plate 55 of the support frame 3, and chevron-shaped locking parts 57, 58 are formed on the left and right sides of the lower end of the front plate 55. has been done. Further, a hollow rectangular cylindrical guide frame 59 extending in the vertical direction is fixed to the inner side of the front plate 55, and sliding parts 60 are formed in the rear left and right parts of the guide frame 59 in the vertical direction. At the same time, a guide part 61 is formed in the front side part of this guide frame 59 in the vertical direction, and this guide part 6
A release portion 62 is formed at the upper part of the front edge of 1.

Further, a needle forming driving mechanism 6 is provided in the guide frame 59.
3 is provided so as to be movable up and down. This needle forming driving mechanism 63 includes a needle forming body 64, a needle driving body 65, and a locking mechanism 66. The needle shaping body 64 is attached to the guide frame 5 in the vertical direction on both left and right sides.
A sliding part 67 is formed which is inserted into the left and right sliding parts 60 of 9 so as to be slidable in the vertical direction, and a paper pushing part 68 is continuously protruded from the lower end of the left and right sliding parts 67.
A U-shaped guide recess 69 is formed between the left and right paper pushing parts 68, and a sliding recess 70 is formed between the left and right sliding parts 67 and the front upper parts of the paper pushing part 68.
A series of needle forming grooves 71 having a V-shaped cross section are formed facing each other in the vertical direction on the inner walls of the left and right sides of the sliding recess 70. A long guide hole 72 is bored,
Furthermore, a locking step portion 73 is formed at approximately the middle portion of the front side of the left and right sliding portions 67 . Further, in the needle driving body 65, a connecting piece 75 is integrally and vertically fixed to the middle lower part of an elevating body 74 extending in the left-right direction, and the rear side of this connecting piece 75 is attached to the left and right sides of the needle forming body 64. A needle driving blade 76 whose left and right parts are inserted into the needle forming groove 71 so as to be vertically slidable is connected and fixed as one body, and the lower end of this connecting piece 75 and the middle part of the needle driving blade 76 are connected to each other. An insertion hole 77 is formed. Further, the lock mechanism 66 has an actuation plate 78, and a communication hole 79 having a larger diameter is bored in the center of the actuation plate 78 and is connected to the insertion hole 77 of the needle driving body 65. A locking pawl 80 that removably locks onto the left and right locking step portions 73 of the needle molded body 64 is protruded from the left and right sides of the lower end of the actuating plate 78. The guide frame 59 is connected to the guide frame 59 via the guide portion 81 that projects upwardly on the front side.
An operating portion 82 protrudes that is removably engaged with the release portion 62 of the holder. In addition, an insertion hole 77 for the needle driving body 65 is provided in the communication hole 79 of the actuating plate 78.
The threaded rod 83 is inserted through the roller 84,
A nut body 87 having a flange 85 and a cylindrical boss 86 inserted into the communication hole 79 is fastened to the protrusion of the threaded rod 83. A coil spring 88 is elastically installed. The actuating plate 78 is biased toward the needle driving body 65 by the coil spring 88, and the left and right locking claws 80 engage the needle forming body 65.
A roller 84 that is locked to the locking step 73 of No. 4 and that covers the head of the screw rod 83 is inserted into the guide hole 72 of the needle molded body 64 so as to be vertically movable. Further, one end of a coil spring 90 is locked to a locking piece 89 at the upper end of the guide frame 59, and the other end of this spring 90 is locked to a locking pin 91 at the upper end of the needle molded body 64. A midway folded portion of the coil spring 90 is suspended by a guide roller 92 rotatably mounted on a shaft at the lower rear side of the guide frame 59 . The needle molded body 64 is always urged downward by the coil spring 90, and the upper part of the needle molded body 64 in the guide hole 72 is engaged with the roller 84 of the lock mechanism 66.

Next, a rotation center shaft 93 is horizontally suspended at the middle upper part of the support frame 3 in the front-rear direction, and at both ends of this rotation center shaft 93, the base of an actuating arm 94, which is approximately L-shaped in side view, is rotatable in the vertical direction. The lower part of the interlocking piece 96 is rotatably attached to the tip of the upper arm 95 extending obliquely upward of the left and right operating arms 94 via a support shaft 97. Interlocking piece 9
6 through the interlocking rod 98 between the upper parts of the elevating body 74.
is rotatably supported on a shaft. Further, an interlocking pin 100 is horizontally projected outward from the tip of the lower arm 99 extending diagonally downward of the left and right actuating arms 94, and an actuating piece 101 is attached to the left and right interlocking pin 100. The tip is the guide long groove 102
The base end of the rotary piece 104 is rotatably attached to the base end of the left and right operating pieces 101 via the support shaft 103, and the base end of the rotary piece 104 is rotatably attached to the base end of the left and right actuating pieces 101 via the support shaft 103.
The drive shaft 105 is rotatably mounted horizontally at the substantially middle upper part of the stapler main body 1. Further, pins 1 protruding from the vicinity of the tips of the left and right interlocking pins 100 and the left and right operating pieces 101
A coil spring 107 is tensioned between the left and right interlocking pins 100 and the left and right interlocking pins 100 are biased and supported by the coil springs 107 so as to engage with the rear portions in the guide slots 102.

The vertical movement mechanism 1 moves the needle forming driving mechanism 63 up and down by the left and right operating arms 94, the left and right interlocking pieces 96, the operating piece 101, the rotating piece 104, the drive shaft 105, and the coil spring 107.
08 is configured.

Further, a drive gear 110 having a cylindrical pushing protrusion 109 at an eccentric position inside the drive shaft 105 is fixed to one end of the drive shaft 105 by a boss 111 at its center. The output gear 114 of an electric motor 113 meshes with the output gear 114 of the stapler body 1, and the electric motor 113 is fixed to the rear part of the stapler main body 1. Further, a support shaft 115 is rotatably mounted horizontally on the front side of the stapler main body 1,
One side of a drive arm 116 is fixed to this support shaft 115, and the base end of this drive arm 116 is engaged with the boss 111 of the drive gear 110, and is pushed by the push protrusion 109. Passive part 117
is formed, and this drive arm 11
The pushing part 118 formed at the tip of the needle shaping mechanism 32 is connected to the notch recess 14 in the guide body 10 of the needle shaping mechanism 32.
19, 31. The pushing part 118 of the driving arm 116 is pushed downward by the left and right coil springs 27 of the guide body 10 via the needle shaping body 22 and the actuating body 23, so that the driven part 117 is constantly connected to the driving gear 116. is biased to engage with the boss 111 of.

Next, a first cam 119 is fixed to the other end of the drive shaft 105.
has a substantially circular operating portion 12 on its outer periphery that turns on the opening/closing contact piece 121 of the micro switch 210.
2 and a vertical release portion 123 for turning off the opening/closing contact piece 121 are formed in series, and
At the outer eccentric position, a cylindrical push projection 124 is provided.
are integrally protruded, and the micro switch 120
is fixed to the rear side inside the stapler main body 1. Further, the lower end of the delivery lever 126 is rotatably attached to a mounting piece 125 fixed to the rear side of the stapler main body 1 via a support shaft 127 in the front and rear direction, and the upper end of the delivery lever 126 is connected to the attachment piece 125. Stopper 12
8 is protruded, and this feeding lever 1
A base end portion of an interlocking piece 130 is rotatably pivoted to the upper end portion of the interlocking piece 130 via 129. This interlocking piece 1
30 extends forward along the inner side of the stapler main body 1, and an interlocking pin 131 is horizontally protruded outward from the distal end of the interlocking piece 130.
31 is inserted into a longitudinally long guide hole 132 formed in the side plate of the stapler main body 1 so as to be freely movable back and forth. Further, a coil spring 135 is tensioned between a pin 133 protruding from the lower side of the feed lever 126 and a pin 134 protruding from the rear lower part of the stapler main body 1. The feeding lever 126 is the support shaft 127
The rear edge of the feeding lever 126 is normally biased to rotate toward the rear first cam 119.
The push projection 124 of the cam 119 engages with the push projection 124 of the cam 119.

Further, a first chuck 136 for drawing out the wire rod is attached to the interlocking pin 131 of the interlocking piece 130, and a horizontal guide 137 protruding from the inner upper part of the first chuck 136 is attached to the side plate of the stapler main body 1. The guide groove 138 is inserted into a longitudinally long guide groove 138 so as to be slidable in the longitudinal direction. Further, a second chuck 139 for supporting wire feeding is fixed to the side plate of the stapler main body 1 at the rear of the first chuck 136.

The first chuck 136 and the second chuck 139 have a wire insertion hole 141 horizontally formed in the front-rear direction of the chuck body 140, and a guide recess 142 opening forward in the middle part of the front end of the chuck body 140. A locking surface 143 for tightening that is inclined forward and downward is formed on the lower side of the guide recess 142 . Further, a gate-shaped chuck body 45 that rotates forward and backward with respect to the guide recess 142 is pivotally supported on a support shaft 144 at the upper front side of the chuck body 140. The guide recesses 142 are formed in the vertical direction, and the guide recesses 142 are formed in the upper and lower parts of the guide long groove 146.
The roller shafts 147a, 148a of the chuck rollers 147, 148 located inside are rotatable, and
The lower chuck roller 148 is inserted into the lower chuck roller 148 so as to be vertically movable, and is locked onto the locking surface 143 of the guide recess 142. As the lower chuck roller 148 moves relative to the locking surface 143, the upper chuck roller 147 is moved up and down. It is becoming more and more like this. Further, a release piece 149 and a base end of a leaf spring 150 are fixed to the upper end of the chuck body 145, and
The release piece 149 extends horizontally toward the rear, and the leaf spring 150 extends toward the rear lower part and is engaged with the upper surface of the chuck main body 140. body 14
5 is held in a slightly rotationally inclined state about the support shaft 144 toward the front.

Further, a support member 15 having a guide 151 at the lower end at the upper end portion of the stapler main body 1 at approximately the middle portion thereof.
2 is provided protrudingly, and this guide 151 and support plate 15
A vertically movable rod 153 is inserted into the vertically movable rod 153 so as to be vertically movable, and a stopper 154 and a push button 155 are attached to the upper part of the vertically movable rod 153.
A pushing piece 156 for pushing the release piece 149 of 36 and the release piece 149 of the second chuck 139 is provided in a protruding manner. This coil spring is wrapped
57, the pushing piece 156 is always released from the releasing piece 14.
It is elastically supported so as to be located above the 9.

Further, a guide body 158 is fixed to one side of the support frame 3 in the front part of the first chuck 136, and the guide body 158 has wire insertion holes for the first chuck 136 and the second chuck 139. A wire guide hole 159 on the same level as 141 is opened in an arc shape from the rear toward the other side of the support frame 3 .

Further, a holder 160 is provided at the upper rear end of the stapler main body 1, and a drum 16 around which a wire rod 162 is wound around the holder 160 via a support rod 161.
3 is rotatably and removably suspended. Further, the support rod 161 includes a substantially semicircular outer guide piece 166 having protrusions 165 on the left and right sides that elastically support the left and right flanges 164 of the drum 163, and a substantially semicircular outer guide piece 166 that closes the flanges 164 of the drum 163. An inner guide piece 167 is connected and supported via a support frame 168. Further, the wire rod 162 is drawn out between the insertion hole 169 at the lower part of the inner guide piece 167 and the outer guide piece 166, and the wire rod insertion hole 141 of the second chuck 136, the upper and lower chuck rollers 147, 148, it is inserted between the wire rod insertion hole 141 of the first chuck 136 and the upper and lower chuck rollers 147, 148, inserted into the wire rod guide hole 159 of the guide body 158, and pulled out from these. .

The first cam 119, the micro switch 120, the feeding lever 126, the interlocking piece 130,
A wire rod feeding mechanism 17 that sequentially feeds out the wire rod 162 of the drum 163 by a predetermined amount by a first chuck 136, a second chuck 139, and a guide 158.
0 is configured.

Next, a rotational center shaft 171 is integrally and vertically erected on one side upper part of the guide plate 5 of the support frame 3, and this rotational center shaft 171 has a direction in which the cutting length of the wire rod 162 is selected. A midway portion of the extended switching lever 172 is pivoted for horizontal rotation. At the front and back of the tip of the switching lever 172, hook-shaped engagement protrusions 173 and 174 for engaging the locking piece 128 of the feeding lever 126 are horizontally projected outward. The guide plate 1 is attached to the lower end of the vertical side plate 175 at the end.
A fixed blade 176 is integrally fixed to the wire rod guide hole 159 of No.
The wire rod 162 is formed at a level where the wire rod 162 is supplied from the guide port. Further, an insertion port 177 for inserting a wire rod is opened in the lower part of the side plate 175 and communicates with the guide port of the wire rod guide hole 159.
Guides 178 are formed facing each other at the front and rear sides of the upper inner side of 7, and between the front and rear guides 178, a movable blade 179 in the form of a long thin plate extending in the vertical direction and moving up and down with respect to the fixed blade 176 is provided. The movable blade 179 is movably provided to cut the wire 162 supplied onto the fixed blade 176. Further, a guide pin 180 protruding in the middle of the movable blade 179 is inserted into a vertically long guide hole 181 formed in the side plate 175 so as to be vertically movable, and the protruding end of the guide pin 180 and the side plate
A coil spring 183 is stretched between the locking piece 182 at the upper end of the coil spring 183, and the guide pin 180 is pushed into the guide hole 1 by the coil spring 183.
The movable blade 179 is always biased upward while being locked in the upper part of the interior of the movable blade 81, and the lower end of the blade is positioned at the upper part of the insertion opening 177 so as to open the insertion opening 177. Pressure receiving part 184 at the upper end
protrudes upward from the upper end of the side plate 175. Furthermore, a locking protrusion 186 having a knob 185 is integrally protruded from the front part of the base end of the switching lever 172, and the upper part of the locking protrusion 186 is provided with a locking protrusion 186 for engaging the front plate 55 of the support frame 3. Elastic protrusions 186a are provided to protrude and selectively engage and detach from the stop portions 57 and 58.

A switching lever 172 having the engaging protrusions 173 and 174, a fixed blade 176, and a movable blade 17
9, coil spring 183, elastic protrusion 186a
A cutter mechanism 187 for selecting and setting the cutting length of the wire 162 is constituted by the knob 185 having the above-mentioned shape and the locking portions 57 and 58.

Next, the rotation center axis 93 of the operating arm 94
A rotating frame 188 is mounted on a shaft so as to be freely rotatable in the vertical direction.
The distal end portions of left and right side frame pieces 189 extending in the front-rear direction of this rotating frame 188 are engaged above between the left and right upper arms 95 of the actuating arm 94, and the actuating arm 94 is lowered. A rod-shaped impacting body 190 that downwardly strikes the pressure receiving portion 184 of the movable blade 179 by rotation is horizontally suspended. Further, a locking piece 191 is formed between the rear ends of the left and right side frames 189 of this rotating frame 188, and this locking piece 19
1, one extension part 193 of a coil spring 192 wound around the rotation center shaft 93 is locked, and the other extension part 194 of the coil spring 192 is fixed to one side of the support frame 3. It is locked by a protruding locking pin 195. The coil spring 192 urges the rotation frame 188 to rotate about the rotation center axis 93 so that the left and right parts of the striking body 190 are locked on the left and right upper arms 95 of the operating arm 94. It's getting old.

Further, a support rod 196 is rotatably suspended horizontally at the upper rear side of the support shaft frame 3, and a lock lever 197 is fixed to an intermediate portion of the support rod 196. At the upper part of the front end of this lock lever 197 is a hook engaging part 198.
is provided protrudingly, and this locking portion 198 is connected to the rotating frame 18.
A passive part 200 is formed at the tip of an arm part 199 which is releasably engaged with a locking piece 191 of No. 8 and which extends to the rear lower part of this lock lever 197. A coil spring 201 is tensioned to urge the lock lever 197 to rotate while the locking portion 198 is locked to the locking piece 191. The coil spring 201 locks the lever 197.
is adapted to lock the rotation of the rotation frame 188.

Next, a second cam 202 is fixed to a substantially middle portion of the drive shaft 105 by a boss 203 at the center thereof, and an upper portion of the boss 203 is rotatably biased downward by the coil spring 201. The passive portion 200 of the lock lever 197 is located close to the lock lever 197. The second cam 202 has, at its inner eccentric position, a cylindrical pushing projection 204 that pushes upward against the coil spring 201 of the passive part 200 of the lock lever 197 and integrally projects in the lateral direction. , a first actuating part 205 having a substantially semicircular shape, a second actuating part 206 having a substantially horizontal shape, a third actuating part 207, and a second actuating part 206 and a third actuating part 207 on the outer peripheral edge thereof. arcuate projection 2 between
08 are formed in series. A second lock lever 197 having the locking portion 198, a coil spring 201, and a pushing protrusion 204 is provided.
The cam 202 constitutes a lock release mechanism 213 that releases the chuck on the rotating frame 188.

Further, a base end portion of a sliding arm 210 having a substantially doglegged shape when viewed from the side is pivotally attached to a mounting piece 209 fixed to the rear side portion of the stapler main body 1 via a support shaft 211 so as to be swingable in the front and rear directions. The inner side of the bending part of the swing arm 210 is provided with each actuating part 205, 206, 207, 2 at the outer peripheral edge of the second cam 202.
A cylindrical engagement protrusion 212 with which 08 engages is integrally protruded in the lateral direction. In addition, the swing arm 2
The base end of an interlocking piece 214 that is movable back and forth is rotatably attached to the upper end of the interlocking piece 214 through a mounting shaft 215. Slider 2 supplied to the bottom of
17 is rotatably attached via a horizontal shaft 218.

The slider 217 has a U-shaped cross section and extends in the front-rear direction, and left and right guides 220 formed at the lower ends of the left and right side plates 219 are connected to the support frame 3.
The slider 217 is engaged with left and right guide rails 21 formed on the guide plate 5 of the slider 217 so as to be movable back and forth. One end of an elastic engagement piece 224 made of a leaf spring is attached to a screw 22 on the top plate 222 at the rear of the sliding plate 223.
5, and this elastic engagement piece 224 projects upwardly and frontward while being gradually inclined. Further, an engagement recess 2 is provided at the upper part near the rear end of the slider 217.
26 is formed, and the leg piece 2 at the rear end of the elastic support plate 227 extends in the front-rear direction within the engagement recess 226.
82 is engaged with the elastic support plate 227, and the elastic engagement piece 224 of the slider 217 is located approximately in the middle of the elastic support plate 227.
An engaging protrusion 229 that engages with the lower part of the elastic support plate 227 is cut and raised into a rectangular shape and protrudes backward and downward, and at the tip of this elastic support plate 227 there is a guide part 2 that is inclined forward and downward.
A support portion 231 is formed horizontally through 30,
A support groove 232 for elastically supporting the staple needle material 216 on the sliding plate 223 is formed on the lower surface of the support part 231 in the left-right direction, and the left and right parts of the support groove 232 are formed on the left and right sides of the needle molded body 64. The needle forming groove 71 is opposed to the needle forming groove 71 . Furthermore, the slider 217 equipped with the elastic support plate 227 is
It is housed in a holder 233 fixed on the guide plate 5 of the support frame 3 so as to be movable back and forth.
is opened, and inside the guide port 235 is an elastic protrusion 2 that slidably supports the elastic support 227 from above.
36 protrudes, and the base of this elastic protrusion 236 is fixed to the upper surface plate 234 with screws 237. Further, retaining pieces 238 of the elastic support plate 227 that protrude from the front left and right sides of the elastic support plate 227 are protruded inwardly from the front end left and right portions of the holder 233 . A protrusion 239 is formed on which one end of a coil spring 201 that elastically supports the arm portion 199 of the lock lever 197 is locked, and the holder 2
34 and the interlocking piece 214
A coil spring 242 is stretched between the protrusion 241 in the vicinity of the rear end, and the coil spring 242 causes the engagement protrusion 212 to constantly move to the second position via the interlocking piece 214 and the swing arm 210. Each operating portion 205 on the outer peripheral edge of the cam 202,
206, 207, and 208.

Then, the second cam 202 and the engagement protrusion 21
2, an interlocking piece 214, a slider 271 having an elastic engagement piece 224, an elastic support plate 227 having an engagement protrusion 229, a holder 23 having an elastic protrusion 236, and a coil spring 242. A needle material supply mechanism 243 that supplies the material 216 to the needle forming driving mechanism 63 is configured.

Further, a mounting board 245 is fixed on the bottom plate 244 of the stapler main body 1, and this mounting board 245
Above are the micro switch 53 and the electric motor 113.
and a control device 246 for controlling the operation of the microswitch 120.

Next, the operation of the above configuration will be explained.

First, when the operating lever 51 of the binding position setting mechanism 54 is rotated, the rotating shaft 49 is rotated in the rotating direction of the operating lever 51, and the pinion 50 is also rotated.
2 is interlocked with the rotational direction of the pinion 50 against the spring 48 and the lock lever 46, and the movable plate 41 having the rack 42 is moved forward or backward along the bottom plate 38 of the sliding groove 33.
Also, with this movable plate 41, this interlocking piece 44 is inserted into the insertion groove 3.
The sliding piece 36 is moved forward or backward along the sliding groove 33 by the interlocking piece 44, and the stopper 34 is moved back and forth. When the rotation of the operating lever 51 is stopped, the movement of the movable plate 41 is stopped, and the lock lever 4, which is biased by the spring 48 in the rack 42 at this stop position, is stopped.
6 is automatically engaged, and the movement of the moving plate 41 is locked by this lock bar 46.
The operating position of the stopper 34 is set. As a result, the binding position for the paper sheets P in the paper sheet insertion recess 6 and the operating position of the micro switch 53 are set.

Also, if you grasp the knob 185 of the cutter mechanism 187 and slide it left and right,
The elastic projection 186a of the locking protrusion 186 is disengaged from one of the locking portions 57, 58 of the front plate 55 of the support frame 3, and the switching lever 172 is moved to the rotation center axis 171.
The elastic protrusion 186a of the locking protrusion 186 is rotated horizontally around the
and is locked by its elasticity.
As a result, the fixed blade 176 and the movable blade 179 of the switching lever 172 are connected to the wire guide hole 15 of the guide body 158.
The movable blade 19 is set close to or set apart from the guide port 9, and the movable blade 19 is set together with the fixed blade 176.
7 are set integrally in the vertical relationship position, and at the same time, one of the engaging protrusions 173, 174 of the switching lever 172 engages the feeding lever 126.
Therefore, the positions of the fixed blade 176 and the movable blade 179 that face the rear part of the locking piece 128 and cut the wire 162 are, for example,
It is set so that it can be cut into lengths of 1.5 cm and 8 cm.

Next, when a sheet P is inserted into the sheet insertion recess 6 along the support plate 4, the insertion end of this sheet P comes into contact with the stopper 34, and when this insertion end is further inserted, the stopper 34 is pushed backward, the sliding piece 36 is slid backward along the sliding groove 33,
The front part inside the locking hole 37 is the interlocking piece 4 of the moving plate 44.
4 and the pushing part 3 of the sliding piece 36
5 pushes the opening/closing contact piece 52 of the micro switch 53, the opening/closing contact piece 52 is closed, and the micro switch 53 is turned on.

Further, an output signal due to the ON operation of this micro switch 53 is input to the control device 264, and this control device 246 is operated to start the electric motor 113, and the output gear 114 of this electric motor 113 is rotated. The drive shaft 105 is interlocked and rotated through the interlocking rotation of the drive gear 110, and the left and right rotating pieces 1 of the drive shaft 105
04, the first cam 119 and the second cam 202 are simultaneously rotated in the direction of the arrow in FIG.

Then, due to the rotation of the first cam 119, the operating portion 122 on the outer periphery of the first cam 119 is activated by the micro switch 120.
The opening/closing contact piece 121 is closed, the micro switch 120 is turned on, this output signal is input to the control device 246, the control device 246 is operated, and the electric motor 113 continues to operate. While the connection is being made, the rotation of this first cam 119 causes the push projection 1 of this first cam 119 to
24, the feed lever 1 of the wire rod feed mechanism 170
26 is pushed, and this feeding lever 126
27 as a fulcrum and rotated forward against the coil spring 135, and the interlocking piece 130 is pushed forward horizontally via the support shaft 129, and the first chuck at the tip of the interlocking piece 130 is rotated forward against the coil spring 135. 136 is moved forward along the guide groove 132 and the guide groove 138. Also, as this first chuck 136 is moved forward via the wire rod 162,
The chuck body 145 is rotated rearward about the support shaft 144 with respect to the chuck body 140, and chuck rollers 147 on the upper and lower sides of the chuck body 145,
148 is moved to the inner side of the guide recess 142 of the chuck body 140, and the lower chuck roller 148 is pushed rearward and upwardly against the upper chuck roller 147 by the inclined locking surface 143 of the guide recess 142. , the wire rod 162 between the upper and lower chuck rollers 147, 148 is crimped and held by the chuck rollers 147, 148, and as a result, the first chuck 136 is moved forward and the wire rod 162 is unwound from the drum 163. This wire rod 162 is guided to the wire rod guide hole 159 of the front guide body 158 and is passed from above the fixed blade 176 to the sliding plate 223 of the slider 217 of the needle material supply mechanism 243 and the guide part 230 of the elastic support body 227. will be supplied between. Further, when drawing out the wire 162, the chuck body 145 of the second chuck 139 that is not moved is held resiliently by the leaf spring 150 with respect to the chuck body 140, and is tilted forward about the support shaft 144. Since the wire rod 162 is pulled out at this point, the wire rod 162 is smoothly pulled out without being crimped and pinched by the upper and lower chuck rollers 147, 148 of the chuck body 145.

Further, due to the rotation of the first cam 119, the pushing protrusion 124 gradually releases the pushing force against the feeding lever 126, and the feeding lever 126 is rotated backward around the support shaft 127 by the return force of the coil spring 135. moved and interlocking piece 130
is interlocked rearward, and the first chuck 136 is returned to the rear starting position along the guide groove 123 and the guide groove 138. Also, the first chuck 136 is moved rearward, and the chuck body 145 is moved backward relative to the chuck body 140.
is rotated forward about the support shaft 144, the leaf spring 50 engages with the upper surface of the chuck body 140, and the chuck main body 140 is returned to the forwardly rotated and inclined state, and the upper and lower chuck rollers 147, 148 move toward the guide recess 14.
Therefore, the wire rod 162 is moved to the outer side of the upper and lower chuck rollers 147, 148
The crimping and clamping of the wire rod 162 is released, and the first chuck 136 is smoothly returned to its original position without receiving much resistance from the wire rod 162. Further, when the first chuck 136 returns, if the wire 162 receives resistance in the return direction, the second chuck 13 is moved by the wire 162.
The chuck body 145 is rotated rearward about the support shaft 144 via the upper and lower chuck rollers 147, 148 in the chuck body 145 of No. 9, and
The chuck crawler 1 at the bottom of this chuck body 145
48 is pushed rearward and upwardly against the upper chuck crawler 147 by the inclined locking surface 143 of the guide recess 142, and the upper and lower chuck crawlers 14
The wire rod 162 is crimped and held between the needle material supplying mechanism 243 and the sliding plate 223 of the slider 217 of the needle material supply mechanism 243. The wire rod 162 supplied between the elastic support plate 227 and the guide portion 230 in a slightly oblique state on the extension line of the wire rod guide hole 159 is prevented from being pulled back. Also, between the sliding plate 223 of the slider 217 and the support groove 232 in the support part 231 of the elastic support plate 227, a wire rod 162 is inserted by the cutter mechanism 187 during front binding operation as described later.
A linear needle material 216 cut into a predetermined length is held horizontally, and this needle material 21
6 has been moved directly below the left and right needle forming grooves 71 in the needle forming body 64 of the needle forming driving mechanism 63.

Next, when the left and right rotating pieces 104 are rotated by the drive shaft 105 as described above, the left and right operating pieces 101 are directed rearward by the left and right rotating pieces 104 via the support shaft 103. The left and right actuating arms 9 are pulled and rotated via the interlocking pin 100.
The lower arm 99 of No. 4 is pulled downward, the left and right operating arms 94 are rotated downward about the rotation center axis 93, and the upper arm 95 is rotated downward. When the left and right operating arms 95 are rotated downward, the left and right upper arms 95 move the left and right support shafts 97, interlocking pieces 97, and interlocking rods 9.
8, the needle forming driving mechanism 63 is forcibly lowered perpendicularly to the guide frame 59 of the support frame 3.

When this needle forming driving mechanism 63 is forcibly lowered, this needle forming driving mechanism pair 64 moves into the guide frame 5.
The left and right paper pushing parts 6 are slid down together with the restoring force of the coil spring 90 inside the sliding parts 60 of the left and right paper pushing parts 6.
8 is lowered to the left and right sides of the tip of the slider 217, the sliding plate 22 of the slider 217
3 and the support groove 232 in the support part 231 of the elastic support plate 227. It is engaged and supported from above by the lower end of the molding groove 71. In addition, the left and right paper pushing parts 68 are continuously lowered to straddle the tip of the slider 217 via the guide recess 69 between the paper pushing parts 68, and the slider 217 is moved by the left and right needle forming grooves 71. Sliding plate 223
Both sides of the straight needle material 216 are bent downward at a right angle through the needle material 216, and the needle material 216 is bent into a U-shaped staple 247. In addition, the left and right leg needles 248 of the staple 247 are supported by the needle forming grooves 71 of the left and right paper pushing parts 68 and are continuously lowered toward the paper sheet P. The end surface comes into contact with the paper sheet P, and the binding portion of the paper sheet P is pressed and supported from above.

Next, the needle material 216 is bent and formed into the staple 247 as described above, and the second cam 247 is bent and formed on the outer periphery of the needle material 216 against the engagement protrusion 212 of the swing arm 210 by the rotation of the second cam 202. Actuation part 20
When the arcuate protrusion 208 is engaged with the arcuate protrusion 208 from the
The slider 217 and the elastic support plate 227 are slightly retracted from the inside of the holder 233 via the upper mounting shaft 215 and the interlocking piece 214, and the left and right needles are The sliding plate 223 and elastic support plate 227 of the slider 217 that sandwich the staple 247 supported by the forming groove 71
The supporting portion 232 of the stapler 2 is retracted and removed, and the staple 2
47 is opened, and the staple 247 is lowered toward the sheet P with its left and right leg needles 248 vertically supported by the left and right needle forming grooves 71.

Further, as described above, when the needle forming driving mechanism 63 is forcibly lowered, the locking mechanism 66 that has locked the needle driving body 65 is lowered into the guide part 61 of the guide frame 59, and the releasing part 62 When the inner part 81 and the actuating part 82 on the upper part of the actuating plate 78 are lowered and engaged,
The guide portion 81 and the actuating portion 82 are pushed rearward by the release portion 62, and the actuating plate 78
is rotated against the coil spring 88, and the left and right locking pawls 80 at the bottom of the actuating plate 78 are disengaged from the locking steps 73 of the needle forming body 64, and the needle driving plate 65 is rotated against the needle forming pair 64. The lock is released.

When the lock of the needle driving body 65 is released, the needle driving blade 76 of the needle driving body 65 is aligned with the needle forming groove 71 of the needle forming body 64 by the operating arm 94 which is continuously rotated downward. The horizontal part of the staple 247 is pushed by the lower end of the needle driving blade 76, and the left and right leg needles 248 of the staple 247 are guided into the needle forming groove 71 of the needle forming body 64. At the same time, the left and right leg needles 248 are forcibly driven into the paper sheet P. Then, the left and right leg needles 248 of this staple 247 are attached to the paper sheet P.
The left and right leg needles 2 are protruded from the lower surface of the
The staple 2
The paper sheets P are stapled in a state in which the left and right leg needles 248 of 47 are curved in an arc shape. At this time, that is, when the needle driving blade 76 is unlocked and the staple 247 is driven down by the needle driving blade 76, the left and right paper pushing parts 68 of the needle molded body 64 are in advance pressed against the sheet P. Since it descends onto the binding section and is supported by it, as the needle driving blade 76 descends, the locking mechanism 6
6 rollers 84 are guided through the guide holes 72 of the needle molded body 64 and lowered.

Next, along with the stapling operation of the paper sheet P by the staple 247, the drive gear 1
10, this pushing protrusion 109 engages with the driven part 117 of the drive arm 116 from above,
Due to the rotation of this pushing protrusion 109, the passive part 117
is pushed downward, and this drive arm 1
16 is rotated about the support shaft 115, and the pushing part 118 at the tip is lifted, and this pushing part 1
18 pushes up the operating body 23 of the needle shaping mechanism 32. When the actuating body 23 here is pushed up, the coil spring 2 is pushed up by this pushing part 30.
7, the left and right needle shaping bodies 22 are rotated outward about the support shaft 24, and the respective needle shaping grooves 25 are
The left and right leg needles 248 of the staple 247 are forcibly rotated horizontally from the inwardly inclined state when bent, and the paper sheets P are stapled by the left and right needle shaping grooves 25. The legs 248 of the staple 247, which are curved in an arc, are shaped horizontally along the lower surface of the sheet P.

Next, as described above, the operating arm 94 is rotated downward and the needle forming/driving mechanism 63 is lowered to form the needle material 216 into the staple 247, and this staple 247 is driven toward the sheet P. At the same time, due to the rotation of the second cam 202, the first actuating part 205 is engaged with the engaging protrusion 212 of the swing arm 210 from the arcuate protrusion 208 on the outer periphery via the third actuating part 207. When the first operating portion 205 engages the swing arm 210, the swing arm 210 is largely rotated rearward about the support shaft 211 against the coil spring 242. Further, when the swinging arm 210 is rotated backward, the swinging arm 210 moves the slider 2 through the upper mounting shaft 215, the interlocking piece 214, and the horizontal shaft 218.
17 and the elastic support plate 2 on this slider 217
27 is moved further back against the elastic protrusion 236 of the holder 223. Furthermore, when the slider 233 and the elastic support plate 227 are retracted, the sliding plate 223 of the slider 233 and the elastic support plate 227
The wire rod 162 is supplied and supported in a slightly oblique state on the extension line of the wire rod guide hole 159 between the guide portion 230 of No. 27 and is guided from the guide portion 230 to the support portion 231 continuing from this guide portion 230. At the same time, the wire rod 162 is held between the support groove 232 and the sliding plate 23 against the elasticity of the support part 231, and the wire rod 162 is moved from the slightly obliquely inclined state on the extension line of the wire rod guide hole 159 to the sliding plate. It is held in a state perpendicular to 223. Therefore, overall, the needle material 216 is
is formed into a staple 247, and as this staple 247 is driven toward the sheet P, the tips of the slider 217 and the elastic support plate 227 are retreated from the binding section, and the next needle material 216 is supplied to this binding section. Prepare for.

Further, as described above, the rotation of the second cam 202 activates the needle material supply mechanism 243, and the pushing protrusion 204 of the second cam 202, which is still being rotated, locks the arm portion 199 of the lock lever 197. The lock lever 197 is pushed up and rotated around the support rod 196 against the coil spring 201 through the pushing projection 204 and the driven part 200, and the engagement of the tip end is The locking portion 198 is rotated downward and removed from the locking piece 191 of the rotation frame 188, and the locking of the locking piece 191 is released. Also this lock lever 197
The rotation frame 188 is unlocked by the coil spring 192.
The impact body 190 is rotated about the rotation center axis 93 by the return force of the impact body 190, and the striking body 190 is forcibly rotated downward. Then, the pressure receiving part 184 of the movable blade 179 is hit downward by this striking body 190,
The movable blade 179 is lowered along the side plate 175 of the switching lever 172 against the coil spring 183, and the blade portion at the lower end of the movable blade 179 and the fixed blade 1
76, the wire rod 162, which has been supplied in advance onto the fixed blade 176 and is held between the sliding plate 223 and the support groove 232, is cut to a length selected and set in advance by the switching lever 172. In addition, the needle material 2 has a length corresponding to the thickness of the paper sheet P.
16 is obtained.

Next, when the left and right rotating pieces 104 are rotated back from the rear toward the front due to the rotation of the drive shaft 105, the left and right actuating pieces 101 are pushed forward, and the actuating arm 94 is rotated. The upper arm 95 of the operating arm 94 raises the needle forming driving mechanism 63 along the guide frame 59. When this needle forming driving mechanism 63 is raised, this needle driving blade 7
6 is raised along the needle forming groove 71, and the roller 84 of the locking mechanism 66 is engaged with the upper part of the guide hole 72 of the needle forming body 64 by this needle driving object 65. The needle molded body 64 is then moved upwardly by the roller 84 against the coil spring 90. Further, as the needle driving body 64 rises, the guide portion 81 and the actuating portion 82 of the actuating plate 78 of the locking mechanism 66 are moved to the releasing portion 62 of the guide frame 59.
At the same time as being pulled upward, the actuating plate 78 is rotated back by the restoring force of the coil spring 88, and the left and right locking pawls 80 are locked again to the locking steps 73 of the needle molded body 64. The needle forming body 64 and the needle driving body 65 are locked in preparation for the next operation.

In addition, due to the upward rotation of the left and right operating arms 94, the striking body 1 is moved by the left and right upper arms 95.
90 is pushed upward, and the rotating frame 188 having the striking body 190 is rotated back against the coil spring 192 about the rotation center axis 93.
Further, at this time, due to the rotation of the second cam 202, the pushing protrusion 204 is disengaged from the driven portion 200 of the lock lever 197 and becomes freely rotatable about the support rod 196. Therefore, the left and right actuating arms 9
4 is raised to a predetermined position, and the rotating frame 1
Lock lever 197 for locking piece 191 of 88
The locking portion 198 is automatically locked against the coil spring 201.

Further, the rotation of the drive shaft 105 causes the needle forming driving mechanism 63 to rise as described above, while the rotation of the second cam 202 causes the outer circumferential portion of the swinging arm 210 to move upward against the pushing protrusion 212 of the swing arm 210. 1 operating part 2
05, the second actuating section 206 faces the coil spring 2, and the swinging arm 210
It is rotated forward about the support shaft 211 by the return force of 42, and this pushing protrusion 212 is engaged with the second operating portion 206. Also, this swing arm 21
0 is rotated, the interlocking piece 214 is pushed forward via the mounting shaft 215, and the slider 217 and the elastic support plate 227 are pushed forward,
The needle material 216 held between the tip of the sliding plate 223 of the slider 217 and the support groove 232 at the tip of the elastic support plate 227 is inserted into the needle forming body 64 of the raised needle forming driving mechanism 63. It is moved directly below the left and right needle forming grooves 71, and the next staple 2
47 to prepare for the molding operation.

Further, due to the rotation of the drive shaft 105, the drive gear 110 is rotated, and the driven part 11 of the drive arm 116 is rotated.
The pushing protrusion 109 that pushed 7 is the passive part 117.
When it comes off, the left and right needle shaping bodies 2 are moved by the restoring force of the left and right coil springs 27 of the needle shaping mechanism 32.
2, the actuating body 23 is lowered, and this actuating body 23
The stopper pin 18 of the drive arm 116 is locked in the bearing recesses 15 and 18, and the pushing part 118 of the drive arm 116 is pushed downward.
is rotated about the support shaft 115, and this driven portion 117 is projected into the rotation locus of the pushing protrusion 109 in preparation for the next driving. In addition, the left and right needle shaping bodies 22 are
are rotated inwardly from each other around the support shaft 24,
Each locking pin 26 is locked to the side edge of the guide hole 17 of the front guide plate 10b, and the needle shaping groove 25 on the upper part of the left and right needle shaping bodies 22 is used to lock the left and right leg needles of the next staple 247. 248 and is returned to the inwardly inclined state in preparation for bending and shaping.

Further, due to the rotation of the drive shaft 105, the left and right rotating pieces 104 and the left and right operating pieces 101 are rotated and extended linearly toward the front, and the first cam 1
19 is rotated once, and the release part 123 on the outer periphery faces the opening/closing contact piece 121 of the micro switch 120, and the opening/closing contact piece 121 is operated to open and turn off the micro switch 120, and this output signal is controlled. The signal is input to the device 246, and the control device 246 is activated to stop the operation of the electric motor 113.

〔Effect of the invention〕

According to the present invention, the wire rod for staple forming can be sequentially fed out by the wire feeding mechanism, and the wire rod fed out by the cutter mechanism can be cut into a length corresponding to the thickness of the paper sheets to be stapled. The needle material supply mechanism supplies the cut needle material to the binding section, and the needle forming and driving mechanism forms it into a staple. Furthermore, the needle shaping mechanism allows the leg needles of the staples driven into the paper sheet to be bent flat, and therefore, the staples can be driven from the wire through a series of operations. At the same time, the staples can be used to neatly bind paper sheets, which eliminates the need to pre-form staples or load staple groups, making it possible to replace staple groups with different leg lengths. To provide an electric stapler which can continuously staple paper sheets of different thicknesses without the need for manual steps, and which does not cause staple legs to get caught or become bulky after paper sheets are stapled. be able to.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Figure 1 is a side view of the electric stapler, Figure 2 is a front view of the same, and Figure 2 is a front view of the electric stapler.
Fig. 3 is a sectional view taken along the line a-a in Fig. 1, Fig. 4 is a cross-sectional view of the same needle forming driving mechanism, Fig. 5 is a front view showing the internal mechanism, and Fig. 6 is the binding mechanism part of the above. , FIG. 7 is a sectional view showing the wire rod feeding mechanism, FIG. 8 is a sectional view taken along the line b-b of the above, FIG. 9 is an exploded perspective view of the whole, and FIG. 10 is a side view showing the chuck mechanism. figure,
Fig. 11 is an exploded perspective view of the needle forming driving mechanism;
The figure is an exploded perspective view of the needle shaping mechanism, and FIG. 13 is an exploded perspective view of the needle material supply mechanism. 1...Stapler main body, 6...Paper sheet insertion part, 9
... binding section, 32 ... needle shaping mechanism, 63 ... needle forming driving mechanism, 162 ... wire rod, 163 ... drum,
170... Wire rod feeding mechanism, 187... Cutter mechanism, 216... Needle material, 243... Needle material supply mechanism, 247... Staple, 24... Leg needle, P...
...Paper leaf.

Claims (1)

[Claims] 1. A stapler main body, a wire rod feeding mechanism provided on the stapler main body that sequentially feeds out the wire rod wound around a drum, and a cutter mechanism that selectively cuts the wire rod fed out from the wire rod feeding mechanism to a desired length; A needle material supply mechanism that supports the linear needle material cut by the cutter mechanism and supplies the needle material above the binding section, which can move forward and backward; A vertically movable needle forming driving mechanism forms the supplied linear needle material into a U-shaped staple and drives the staple into the paper sheet, and a paper sheet is installed directly below this needle forming driving mechanism. The present invention is characterized by comprising a needle shaping mechanism that bends the left and right legs of the staple provided through the insertion portion and inserted into the paper sheet, and shapes the legs horizontally along the lower surface of the paper sheet. Electric stapler.