TW548360B - Thread cutter - Google Patents

Abstract

The opening operation of scissors in a conventional thread cutter is influenced by the position of a cloth feeding mechanism. The invention provides a thread cutter (11) comprising a needle thread cutting device (12) and a bobbin thread cutting device (50). The needle thread cutting device (12) includes openable needle thread cutting scissors (15). The bobbin thread cutting device (50) includes openable bobbin thread scissors (52). When an operation lever (10) is rotated, the needle thread cutting scissors (15) cut and hold a needle thread. On the other hand, the bobbin thread cutting scissors (52) cut and hold a bobbin thread by the rotation of the operation lever (10). When a solenoid (38) is operated, a lever (21) is rotated and an opening cam portion (21a) of the lever (21) opens the needle thread cutting scissors (15). On the other hand, when a solenoid (66) is operated, an operating member (68) is operated to open the bobbin thread cutting scissors (52).

Description

发明 Description of the invention: [Technical Field 3 of the Invention by the Inventor] The present invention relates to a wire cutting P provided on a sewing machine, which is used to weave a buttonhole with a predetermined number of fixed sutures. I: Prior art 3 Background of the invention Draping a buttonhole with fixed stitches such as a buttonhole Do not swing and move a needle vertically and a shuttle device to rotate k In addition, this type of sewing machine includes a device for cutting and connecting to a A needle thread cutting device for cloth and a needle thread, and a thread axis cutting device for cutting-line axis connecting the cloth and the needle. For example, needle and thread cutting of Cui ~ was exposed in the case of JP-B 525. On the other hand, _ knowj has been disclosed in the case of JP-B-7-59266 ° "Wo Chi has been cutting the needle and thread scissors of the thread axis disclosed in JP-B-61-5258U through several mechanisms connected to — Operating lever. During operation ', it can be connected to the lever raiser of the sewing machine.当 Ά 贡 棹 连 Γ: Γ. Even if the operating lever returns to two after needle and thread cutting? Up ’position, the needle cutter supports the needle thread at the _ position. The original position is in the green ± in the case of JP ~ B ~ 7-59266. The thread axis scissors _ 、 and the secondary axis cutting device can be opened to connect with the needle thread cutting device _, the axis scissors closed with __㊣; ^ The material rod is pulled and pulled so that the line runs through the line. Even if the operating lever is returned to the original position, the wire = knife supports the reel in the closed state. Scissors are opened == Operation: • Needle opening mechanism, which operates in conjunction with 鏠, _ 二 ::, and -4 axis scissors opening mechanism of the bobbin. The structure of the mechanism The knife and lever arm were placed in the early stages of movement. After the start, the cloth feed mechanism moved to a fixed position to open the needle and scissors. In the cutter, after the opening operation of the needlework scissors and the thread start, the cloth feeds the interconnection. Therefore, in _ operation open the scissors and the rear seems to be in a fixed position to open the needle thread. Known = to loosen a needle thread and-thread axis. In addition, 1 roll # and the thread axis are released immediately after the line is cut, and the feed mechanism moves from the predetermined end position to the 5 same position. Xinru, for example, the next cycle of stitching cannot be performed when the positions are separated. Thus, the initial sewing operation is ended. In particular, it is always necessary to move the ore, 布, and 同 to the same position, in order to cause sewing work. In other words, the operation of opening the scissors is performed in interconnection with the movement of the cloth feeding mechanism, so that they are significantly restricted from each other. c Summary of the Invention] 548360 Summary of the Invention The purpose of the present invention is to solve the conventional problems, and it is provided with a wire cutter that is driven independently of a press bar lifter and a cloth feeding mechanism. In order to solve the problem, the present invention is provided with a thread cutter (11), which is arranged on a 5 buttonhole darning sewing machine, and can perform buttonhole darning around a buttonhole with a needle thread and a thread axis. Needle thread scissors (15) supporting cut needle threads in a closed state, thread axis scissors (52) capable of closing the cutting thread axis and supporting cutting thread axes in a closed state, and an actuator for driving to an open state (Solenoid 38 or solenoid 66), at least one of the needle thread 10 scissors and the thread axis scissors is set to the closed state. According to a first feature of the invention, the wire cutter includes an actuator which is driven to guide at least one of the needle scissors and the thread axis scissors to the open state. As a result, the operation for opening the scissors is not interconnected with the movement of the cloth feeding mechanism of the sewing mechanism. Therefore, when the sewing machine starts the sewing operation in the next cycle, the position of the cloth feeding mechanism is not affected by the opening operation of the scissors. In particular, even if the cloth feeding mechanism does not move to a sewing start position, when the sewing operation in the next cycle starts, the respective scissors release the thread within a predetermined time. In particular, it is used to open the scissors so as not to be interconnected with the movement of the cloth feeding mechanism. Therefore, the scissors are opened in a desired time without being affected by the moving direction 20 of the cloth feeding mechanism. In addition, the scissors perform an opening operation by a driving operation of a starter originally provided on the wire cutter. Therefore, the opening operation of the scissors is not affected by the operation of other mechanisms of the sewing machine. A second feature of the present invention is that the wire cutter according to the first feature further includes an actuator (a solenoid 72 and a solenoid 73 or a pulsating motor 101), of which 7 548360 is used to drive the set in the open state Needlework scissors to the closed state, and needlework scissors set to the closed state to the open state. According to a second feature of the invention, the wire cutter includes a starter. The actuator drives the needle scissors to the closed and open positions. Therefore, the operation for closing and opening the needle tube 70 need not be performed in interconnection with the press bar lifter and the cloth feeding mechanism. Therefore, when the sewing machine stops the sewing operation and starts the next cycle of sewing operation after the needle scissors perform a cutting operation, the position of the cloth feeding mechanism is not affected by the opening operation of the needle scissors. In addition, the needle thread scissors perform the closing and opening operations by the driving operation of the starter originally provided on the wire cutter. Therefore, the time for opening the needle scissors is not affected by the operation of other mechanisms of the sewing machine. A third feature of the present invention is that the wire cutter according to the second feature further includes a pulsating motor (101) as a starter, and a needle-scissor operating device (a cam mechanism 104), which rotates the motor in one direction Guide setting 15 The needlework scissors in the open state to the closed state, and guide the needlework scissors set in the closed state to the open state by turning the motor in the other direction. According to a third feature of the present invention, by turning the arterial motor in one direction, the needle-scissor operating device closes the needle-cutter and opens the needle-cutter by turning the 20-arterial motor in the other direction. Therefore, only a pulsating motor is sufficient as a driving source for opening and closing the needle scissors. Therefore, the manufacturing cost and the number of components of the wire cutter can be reduced. A fourth feature of the present invention is that the wire cutter according to the first feature further includes an actuator (a solenoid 91 and a solenoid 61 or a pulsating motor (131), 8 548360 of which is used to drive the setting in the open state) According to a fourth feature of the present invention, the wire cutter includes an actuator. The actuator drives the wire axis scissors to the closed and open positions. Therefore, the operation of closing and opening the scissors of the thread axis 5 is not interconnected with the operation of a lifter and a cloth feeding mechanism. Therefore, after the thread axis scissors perform the cutting operation, when the sewing machine finishes the sewing operation and starts the next cycle During the sewing operation, the position of the cloth feeding mechanism is not affected by the opening operation of the thread axis scissors. In addition, the thread axis scissors are closed and opened by the driving operation of the starter originally provided on the wire cutter. . Therefore, the time of the opening operation of the thread axis scissors is not affected by the operation of other mechanisms of the sewing machine. A fifth feature of the present invention is according to the present invention. The wire cutter of the fourth feature further includes a pulsating motor (131) as a starter, and a wire scissors operating device, which guides the thread axis scissors set in the open state 15 to the closed state by the pulsating motor in one direction of rotation According to the fifth feature of the present invention, the thread axis scissors operating device closes the spool with the pulse motor rotating in one direction through the pulse motor in the other direction. The wire cutter 'and the wire axis scissors are opened by turning in the other direction. Therefore, only a pulsating motor is enough to cause a 20 driving source to open and close the wire axis scissors. Therefore, the cost and the components of the wire cutter can be reduced. The sixth feature of the present invention is the wire cutter according to the second feature, wherein the driving speed of the pulsating motor when the line axis scissors are driven to the closed state and the driving speed of the pulsating motor when the line axis scissors are driven to the open state are possible. 9 548360. According to the sixth feature of the present invention, the driving degree of the pulsating motor can be changed. Therefore, for example, When the line-axis scissors are cut and support the reel line, the driving speed can be reduced to cut the line axis reliably and sharply, or the Z 5 axis can be prevented from slipping off the line-axis scissors. Features The cutting cry according to the fifth embodiment of the present invention further includes an actuator (solenoids 72 and 73 and solenoids 91 and 66, or a pulsating motor and a pulsating motor 131), which are used to drive the setting at The open state i, ten in the knife to the closed state, and the needle thread 10 scissors in the closed state are driven to the open state, and the thread axis scissors set in the open state are driven to the closed position, and another gr * $

Drive the bobbin scissors set in the closed position to the open position. J. According to a seventh feature of the present invention, the wire cutter includes a starter. The Starter Drives Stitch Recording Before 15 20

Knife and line axis scissors to closed and open state. Therefore, the operation for closing and hitting the individual scissors is not the same as the operation of a lever lifter and the cloth feed.

The operations of the city structure are performed interconnected. Therefore, when the sewing machine starts sewing in the next cycle, the position of the cloth feeding mechanism is not affected by the opening operation of the scissors. In other words, when the sewing operation in the next cycle is started, even if the cloth feeding mechanism is not moved to a sewing start position, the respective scissors can release the thread. In this regard, the individual scissors are protected by the drive of the starter originally provided on the wire cutter. Know how to perform close and open operations. Therefore, the impact of the operation of the other mechanisms of the Mori no double stitching machine. The feature of Fanleba according to the present invention is that the wire cutting according to the first to seventh features is a solenoid, a round air portion or a pulse motor. 10 548360 According to an eighth feature of the present invention, the starter is a solenoid, an air cylinder or a pulsating motor, which operates with electricity. Therefore, the time for closing and opening the needle and thread scissors can be easily changed. Conventional needle and thread scissors are interconnected with a plunger lifter and a cloth feeding device. Therefore, the opening and closing times of needlework scissors and thread scissors are adjusted mechanically by changing the position of a cam. However, in the present invention, the operation of opening and closing these scissors is performed by driving a solenoid, an air cylinder portion or a pulse motor. Therefore, the time for opening and closing the scissors can be easily adjusted. Brief description of the drawings 10 The wire cutter according to the embodiments of the present invention will be described with reference to the drawings, wherein: FIG. 1 is a cross-sectional perspective view of the wire cutter according to the first embodiment; A side view of the wire cutter according to the example; FIG. 3 is a plan view of the wire cutter according to the first embodiment; 15 FIG. 4 is a front view of the wire cutter according to the first embodiment; Bottom view of the thread cutter according to the embodiment. FIG. 6 is a sectional perspective view of the needle thread cutter according to the second embodiment. FIG. 7 is a plan view of the needle thread cutter according to the second embodiment. FIG. A bottom view of the thread cutter of the second embodiment; 20 FIG. 9 is a plan view of the needle thread cutter according to the third embodiment; FIG. 10 is a sectional perspective view of the needle thread cutter according to the third embodiment; A side view of a cam mechanism in a needle thread cutter according to the third embodiment; 11 54836; FIG. 12 is a bottom view of the thread axis cutter according to the third embodiment; FIG. 13 is a third view of the turtle axis Example of linear axis cutting Sectional view of the device. Fig. 14 is a diagram showing five wire cutters according to the third embodiment. Fig. 15 is a block diagram showing the whole contact shaft of a buttonhole weaving as one embodiment of the present invention. , T practical

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 1 [First Embodiment] Before explaining the -wire cutter 11 according to the first embodiment, a buttonhole darn including the same-wire cutter for fixing stitches will be described first. The general structure of the sewing machine. As shown in Figure 2 *, a sewing machine frame 15 4 mounted on a table of a sewing machine includes a bottom 1, which has a rectangular box-like shape and rises from the bottom

A raised drum-shaped portion 2 and an arm body 3 extending from above the elongated drum-shaped portion 2 to oppose the bottom portion 1 are provided. A needle bar (not shown) having a needle 5 fixed to the lower end is supported on the tip of the arm body 3 which can be moved vertically and laterally. A shuttle device (not shown) is provided at 1Jl relative to the bottom of the needle bar. The shuttle device accommodates a spool 1 around which a spool axis is wound and cooperates with the needle 5 to form a fixed stitch. A pressure rod foot arm 7 extending longitudinally in FIG. 2 is placed under the arm body 3. A cloth pressure rod 6 used to connect to the front end of the pressure rod foot arm 7 when sewing is young. The lower end of the pressure rod 9 extends vertically through a roller 8 to connect 12 548360 front end. The pressing rod 9 can move vertically and press down the cloth pressing rod 6 when receiving the downward elastic force generated by a 7L piece (not shown), so that the cloth domain is in the Yang pressing rod-Qianhaoban (Under age). In addition, the pressure lever 9 is connected to an operation lever ㈣. When the operating lever is actuated, the pressing lever 9 is lifted up by the elastic force, so that the cloth supported by the cloth pressing lever 6 is released. The pressure lever foot arm 7 has a rear end connected to a cloth feeding mechanism (not shown). The cloth feeding mechanism feeds the flat plate and the pressure lever foot arm 7 with the horse-phase driving force to move the cloth in a longitudinal direction, and feeds the cloth supported between the cloth pressure and the cloth feeding plate.

10 15 〃 In addition, the sewing machine is equipped with a cloth cutting mechanism to form a buttonhole on the cloth in the direction of the back of needle 5 in Fig. 2. The cloth cutting mechanism includes a knife holder provided on the bottom side, a movable knife (not shown) provided on the upper side of the vertically movable knife holder, and a cloth having a cloth knife for vertically moving the feedable knife. _Cylinder (not shown)-Knife drive mechanism. 20 In addition, the sewing machine is provided with a wire cutter n: Xibu'ler according to the present invention (No. _). The machine includes a control device (not shown), which is based on the operation of each mechanism set in advance. As a result, the sewing machine performs a series of operations related to button fiber patching. Next, we will explain the line tangent in conjunction with Figures 1 to 5. Wire cutter: a needle cutter for cutting-needle thread red μ, and a linear axis cutter for cutting the glaze thread 50.

First, the construction of the needle thread cutting cutting line 12 from the benefit 12 for performing the needle thread cutting operation will be described with reference to Figs. Needle thread The needle thread cutting section 13 and 13 are constituted by the needle thread cutting dragon moving section 14 for driving the needle thread cutting section 13. The needlework cutting section 13 includes an openable needlework scissors 15, a support arm 16 supporting the needlework scissors 15, and a support arm 16 which is fixed to the-tip portion-a support vehicle 4 and a watch 24. The horizontal revolving-rotating: the supporting part 23 below the arm body 3 which the axis rotates. The support shaft 17 is supported to slide and rotate the receiving element 24 through the teeth, and thus supports the arm body support arm 16 having a bottom end fixed to the tip portion of the support shaft 17 and a tip connected to the lower end of the pressing rod 9 H. Therefore, the support shaft 17 moves vertically around the bearing element 24 with the vertical movement of the pressing rod 9. The tip of the arm support shaft 17 is supported! As shown in the figure, it extends to the left, and bends downward as shown in the previous figure, and extends forward and obliquely. The tip portion of the holder 4 is provided with needlework scissors 15 which are bent toward the tip portion of the presser arm 7. Needlework scissors 15 include a fixed blade 20 fixed to the tip of the support arm 16 rotatably around a fixed blade 栓 bolt as prepared-a movable blade 77 19, and a _ press fixed to the fixed blade Tablet 18. Further, the movable blade 19 is provided with a camming portion 19a protruding from its upper surface. The needle thread cutting drive section 14 will be described below. The needle thread cutting drive section 14 includes a needle thread cutting device 77 which causes the needle * butterfly 3 to perform the operation of closing the needle thread Hungarian knife 15 (an operation of cutting the needle thread) and the needle thread scissors opening device for causing the needle thread cutting section 13 to perform the opening of the needle thread. The operation of scissors 15 (the operation of loosening the needle thread) The details of the operation will be described below. The needle thread scissors closing device causes the vertical orbit of the needle thread scissors 15 and the needle to be placed in the 4th, 5th, and 7th positions of the waiting position. ,.丨 The vertical track of the knife performs the closing operation. In particular, after the sewing machine finishes a μ, and the cutting operation, the needle thread scissors closing device closes the needle thread cutter 1S ^ while waiting to move the needle thread scissors 15 toward a cutting position perpendicular to the needle $ 1000. As a result, the needlework scissors 15 cut the needlework and support the cut needlework. Next, < The needle thread scissors closing device moves the needle thread scissors 15 from a cutting position toward a knot waiting position (which is separated from the vertical recording path of the needle 5 but not from the vertical straight path of the cloth cutter). / On the other hand, when the sewing machine starts the sewing operation and the needle 5 forms a plurality of stitches, the needle thread scissors opening device moves the needle thread scissors 15 in the closed state positioned at the -end waiting position to the waiting position, and the needle thread scissors 15 are held. 、: 果 ’Needlework scissors 15 Release the supported needlework. The waiting position, cutting position and the ending waiting position will be described later.

15 The structure of the needle thread scissors closing device will be described below. Lateral extension The bottom end (right end) of the Cai Cai Cai 10 is connected to the longitudinal drum 2 which is rotatably wound in the longitudinal direction. —The end of the tension spring 31 is connected to the middle of the operation product 0, and the other end of the tension spring 31 is connected to the arm body 3. Looking at (backward) the tension spring 31 starts in a clockwise direction (the opposite direction). Operating lever 10. From the front 1

A roller connecting portion 26 extends upward from the bottom end of the operating lever 10, and a roller 27 is provided at the upper end of the roller connecting portion. A rocking member µ is provided to abut on the roller 27. The rocking member 28 extends laterally, and the bottom end (right end) of the rocking member is connected to an arm body which can be rotated about a rotation axis in a vertical direction]. In addition, a cam 28a is formed behind the rocking member 28, and a roller 27 is formed on the cam 28a. The front of the shaking element is connected to the bottom of the rotating arm. The bow of the starter 29 is fixed to the rear end of the support shaft 17. —The compression spring 3_ ⑼ is on the support shaft 17 between the rotating ㈣ and the feed element. The compression spring 30 activates the support shaft 17 and the rotating arm backward. "The right side of the wheel 7 and the member 32 is connected to the middle part of the lever = lever, which can rotate longitudinally about the rotation axis. The left end of the cam element 32 is connected to The middle part of a linear axis cutting lever that can be rotated along the rotation axis. The linear axis cutting lever 33 extends in a vertical direction, and a lower part enters the bottom. The upper end (bottom end) of the spring axis cuts # 33. ) Is connected to the longitudinal drum-shaped portion 2 which can be rotated longitudinally about the rotation axis. A pressing rod 34 is fixedly provided on the t-section of the linear axis cut 3. The tip portion 3 of the pressing rod 34 is cut from the linear axis The cup 33 extends to the right. The linking mechanism is placed near the tip portion 34a of the transfer material. In Figure 4, the linking mechanism 35 includes a support 35a, a linking body 3%, and a compression branch. The bottom end of the connection body that supports the supporters to the supporters is connected to the support body 35a that can be moved longitudinally about the rotation axis. = The tip of the connection body 35b is provided with an upwardly bent connection portion, and the shrinkage 35d is connected to the support 35a And the connection body said. Mo Zhuo Jingqing started the connection for ^ holding body 35a up Say. The dust rod_tip is placed close to the upper surface of the engaging body 35b. The wire return_lever M rotates in a clockwise direction around the upper end when viewed from the front, the pressure rod_tip 34a leans against the compression spring 35d pushes down the engaging body 3. On the other hand, the rotating arm 29 extends downward from its bottom end. A roller% is provided on the middle portion of the rotating arm 29. In addition, one end of the tension spring 37 is 548360 =, On the middle part of the boom 29, the other end of the tension spring 37 is suspended on the upper end of the linear axis cutting lever 33. From the front, the tension spring π Z clock direction starts to rotate f 29. Then, the roller 36 turns on the cam part and 32b on the right side of the shape 5 Z element 32. As a result, the clockwise rotation of the force arm 29 is suppressed.-The corner part looks like the cam part milk It is formed on the right end of the cam element 32. In addition, the pure pawl 29a extending forward can be freely engaged with and disassembled from the engaging portion of the engaging body. Almost-the length of the rectangular π member_close the flat plate 25 downwards · 10 set to the front end of the presser foot arm 7. Next, we will match Figures 1 to 4 The needle thread scissors opening device will be described. ^ The needle thread potential knife of the 'needle thread cutting part' in the Baizhi thread cutter is opened to interconnect with the forward movement of the presser foot. However, in the thread cutting judgment according to the present invention, the needle thread cutting The needle thread scissors 15 of the section 13 are opened by the driving operation of the starter 15 without being interconnected with the pressure arm foot arm 7. The first 5 needle thread opening device includes a thread scissors opening driving device for opening the needle thread scissors ^ And a needle-moving device for moving the needle thread # from the end-waiting position to the knife 15 to the -waiting position. The needle-scissors are opened, and the driving device includes as a starter-a helix I · 20 38 'connected to the horizontal A middle part of the rotating shaft is provided with a rotation support 胄. 16, a spring force% for activating the lever 21. The solenoid 38 is fixed below the arm body 3 and is moved longitudinally to a forward-rod technique. The upper end of the pole ground is connected to the end of the lever. Tension spring yellow 39-hangs on the middle part of lever 21, while tension spring 17% 548360 the other end hangs on the sewing machine frame 4. The tension spring% is oriented toward the rear-restart 38a and one end of the lever 21. The other end of the lever 21 is provided with an opening cam portion 21a extending to the right. The opening cam portion 21a is provided to the left and the side of the cam abutting portion. -The first cam surface 21b and the second cam surface 21c are formed on the right end of the cam 5a 21a. The first cam surface 21b extends in the longitudinal direction. The second cam: ‘21c is connected to the first cam surface 21b and is inclined leftward and rearward. When the needlework scissors 15 are set in the closed state and the solenoid 邛 is turned from the closed position to the open position, the lever 38a is pushed forward against the tension spring 39. As a result, when the lever 21 is viewed from one side (right side), it is turned in the counterclockwise direction (the direction of arrow 10 in the figure). Due to the rotation of the lever 21, the second cam surface 21 abuts on the cam abutting portion 19a, and finally, the first cam surface 21b abuts on the cam abutting portion 19a. As a result, the cam field contact portion 19a is pushed by the opening cam portion 2ia, and the movable blade 19 is rotated, so that the needlework scissors 15 perform an opening operation. When the solenoid 38 is brought to the closed position, the tension spring 39 and the lever 38a are set to the original state, and the needle scissors 15 are maintained in the opened state. With reference to FIGS. 1 to 4, the needle-scissors moving device is described as including a solenoid 40 as an initiator, and a connecting element 41 connected to the end of a rod 40a of the solenoid 40. A pressing lever 42 to the connecting element 41, and a force spring 13 7. 20 The solenoid is fixedly placed on the bottom 1 and to the left of the coupling mechanism 35 ·. The rod 40 a extends rightward from the body of the solenoid 40. The solenoid 40 can move the rod 40a laterally. One end of the connecting member 41 is connected to a tip portion of a lever 40a which can be rotated longitudinally about a rotation axis. One end of the pressing rod 42 is connected to the other end of the connecting member 41 which can be rotated longitudinally about the rotation axis. The pressing rod 42 extends in a vertical direction 18 548360 5 10 15 from one end to a middle portion, and the middle portion is bent to the right. The pressing rod 42 is provided on the middle portion of the longitudinal drum-shaped portion 2 which can be rotated longitudinally about the rotation axis. The pressing rod 42 extends laterally from the middle portion toward the tip portion, and the tip portion is provided close to the upper surface of the engaging body 35b at the engaging material 29a and provided under the punching portion & of the engaging body 35b and by In the embodiment in which the activation force of the tension section 37 is turned on (connected to) the difficult part%, the needle-scissors moving device operates in the following method. In particular, when the solenoid 40 is changed from the closed state to the open state, the lever 40 moves 2 to the left (in the direction of the arrow e in FIG. 1). As a result, the pressing lever 42 is rotated clockwise from the front. Due to the rotation of the pressing lever 42, the tip end portion of the pressing lever 42 presses down the balance body 35b. As a result, the engaging body 35b is rotated in a clockwise direction when viewed from the front, and the engaging portion 35e is separated from the engaging pawl 29a. When the separate action is advanced, the 'rotating arm 29 is rotated clockwise by the activation force of the tension spring 37 around the support. Due to the rotation of the rotation f29, the needle scissors 15 connected to the tip portion of the support arm 16 are moved from the end waiting position to the waiting position via the support shaft Π. In this embodiment, the rotation of the rotary chute is stopped by the view roller 36 on the cam element 32.

Next, the wire axis cutter 50 will be described with reference to FIGS. 1 and 5. The line cutter 50 includes a narrow flat bottom 51 operatively provided with a narrow line scissors 52 relative to the narrow flat bottom 20 51 to guide the line scissors 52 in the opened state to the line of the closed position. The knife closing device 53 is used to guide the line axis scissors 52 set in the closed state to the line axis scissors opening device 54. The narrow plate bottom 51 is a plate-like element, which is firmly placed on the bottom 1 which is almost 19 548360 horizontal. A narrow flat plate 55 is fixed to the upper surface of the narrow flat bottom 51. The narrow plate 55 is provided with an insertion hole for inserting the needle 5 therethrough, and a shuttle device is provided under the narrow plate bottom 51. The line-scissors 52 include an upper knife 56, a lower knife 57, and a blade spring 58. The lower blade 57 is placed in front of the narrow flat bottom 51. A bottom end 57a of the lower blade 57 is connected to the lower surface of the narrow flat bottom 5J that can be rotated about the rotation axis in the vertical direction. The upper blade 56 of the leaf spring 58 is provided on the lower blade 57 which is rotatable about a rotation axis in a vertical direction with respect to the lower blade 57. A bolt 56a is provided to protrude from the lower surface of the upper knife 56. A forward projection 56b is formed in front of the upper blade 56. The leaf spring 58 is fixed to the lower blade 57. The line-axis scissors closing device 53 can rotate the lower knife 57 'around the bottom end 57a to close the line-axis scissors 52. The configuration of the line axis scissors closing device will be described below. The line-axis scissors closing device 53 includes a driving arm 60, a connecting element 61, a line-axis cutting link 62, a line-axis reel arm µ, a 15-link element 64, and a link element 65. A forwardly extending ball bolt 59 is provided at the lower end of the axis cutting lever 33. The rear end of the longitudinally extending driving arm 为 is a ball connected to the ball pin 59. It is provided on a middle portion of one of the bottom portions 1 which can be rotated vertically about a rotation axis. The front end of the driving arm 60 is connected to one end (left end) of a 20-link member 61 which can be vertically rotated around the turning vehicle. The other end of the link member 61 is connected to one end (rear end) of the cutting link 62 which is capable of rotating in a vertical direction about a rotation axis. The linear axis cutting link 62 is connected to the middle portion of the lower surface of the narrow flat plate bottom 51 that can be vertically rotated about the rotation axis. The tip of the wire cutting link 62 is connected to the middle of the narrow bobbin of the bobbin, and one end of the 20 548360 link element 64 can be rotated around the turning vehicle in a vertical direction. The other end of the link element 64 is connected to be rotatable about a rotation axis in a vertical direction; = 57. The rear end of the spool arm 63 is connected to one end of a link member 65 that can be rotated in a vertical direction. The other end of the link member 65 is connected to a narrow flat bottom 51 that can be rotated about a rotation axis in a vertical direction. The spool axis arm 63 is rotatable from a spool through a spool through its tip.

The linear axis scissors 52 set in the opened state are closed in the following manner. Lu Qiye, when the driving arm 60 rotates, the lower blade 57 passes forward around its bottom end 57a = 10 linear axis cuts the link 62, the linear axis reel arm 63 and the link element 64 rotate °. As a result, the upper blade 56 moves forward with the lower blade 57, and the protruding portion 56 b of the upper blade 56 abuts on an opening portion 51 a of the narrow flat bottom 51. Then, the forward movement of the upper knife 56 is suppressed, and the lower knife 57 is further rotated forward, so that the upper knife 56 is rotated backward with respect to the lower knife 57. As a result, the thread axis scissors 52 are closed 15 to cut the thread axis guided from the spool. In addition, when the line axis scissors 52 are closed, the 'line axis is supported by the leaf spring 58 and the upper blade 56.

The bobbin scissors opening device 54 pushes the bolt 56a 'by driving an actuator to open the bobbin scissors 52. The configuration of the line axis scissors opening device 54 will be described below. The thread axis scissors opening device "includes 20 a solenoid 66 as a starter, a link element 67, an operating element 68, and a force spring 69. The solenoid 66 is securely placed on the bottom. 嫘66 moves in the longitudinal direction only 66a. The front end of the rod 66a is connected to the rear end of the link element 67 that can be rotated about the rotation axis in a vertical direction. The front end of the link element 67 is connected to one end of the operation element 68 that can be rotated about the rotation axis in a vertical direction. ^ In addition, the tension spring 21-69 end is connected to the operation element 68-end, and the tension spring _ the other end is connected to the bottom 1. The operation element _ part of the towel is connected to the narrow flat bottom 5 which can be rotated in a straight direction about the force axis From the bottom view (looking downwards) The tension spring ㈣ activates the operating element 68 clockwise. The other end of the operating element extends toward the bolt 56a. When the solenoid 66 is changed from the closed state to the open state, The lever 6 6 a is pushed outward. As a result, the bottom of the series appears to rotate in a counterclockwise direction. ^ Operate the tip portion of the 7G member 68 to push the pin 56a. When the pin 56a is pushed, the large portion 56b and the opening are partially Tianbi gets loose At this time, the upper knife is turned forward for the lower jaw. As a result, the thread axis scissors 52 are opened and the supported thread axis is released. When the solenoid 66 is changed from the open state to the closed state, the operation member 68 is used The starting force of the tension spring 69 rotates in the direction of the clock. The wire cutter u and the operating sequence will be described below. The on / off control of the sewing machine is controlled by the solenoid 38, 66, so that the wire_u operates in the following order. When the sewing machine is performing the sewing operation, the wire cutter 11 is set to the following state. In particular, (1) the operating lever 10 is set to position A shown in FIG. 4 by the activation force of the tension spring 31. (2) The support shaft 17 and the rotation arm 29 are positioned rearward by the starting force $ of the compression bomb η 30. (3) The rotation of the rotation arm in the direction of the bayonet lock is viewed from the front by the cam portion of the cam element 32. The field ratio of the roller 36 is suppressed. (4) The solenoid 40 is set to the off state, and the pressure lever 42 is set to a state where the engaging body 35b is not pressed down. (5) The dust lever 34 is also set to The engaging body 35b does not relax downwardly. The engaging pawl ⑽ is positioned on the upper surface of the engaging body 35b. On the side, the ⑺ solenoid 38 is set in the closed state, and the 548360 needle thread to knife 15 is set in the open state. The ⑻ needle thread scissors 15 are positioned in a left-tilted and backward-waiting position (separated from the vertical track of the needle 5) ( (On the plane). (9) The solenoid 66 is set to the closed position and the wire axis scissors% is set to the open state. (10) The protruding portion of the upper knife 56 does not abut the opening of the narrow 5 flat bottom 51 Partially, and the thread axis scissors 52 are placed outside the vertical track of the needle 5 without disturbing the initial position of the guided thread axis. After the sewing machine completes a buttonhole darning, the worker activates the operating lever 10. As a result, the operating lever 10 It rotates counterclockwise around one of its bottom ends (in the direction of arrow d in the first figure); and the needle cutter 12 operates in the following manner when the operating lever 10 is rotated upwards 10 to position B. In particular, the roller 27 rotates counterclockwise around the bottom end of the operating lever 10 as viewed from the front, and therefore moves along the cam 28a of swing = 28. As a result, when the roller 27 rotates the swing member forward, the swing member 28 pushes the support shaft 17 and the swing arm 29 forward. By the forward movement of the support shaft 17, the needlework scissors 15 are moved forward. On the other hand, the cam member 32 rotates clockwise around its left end by the rotation of the operating lever 10. The linear axis cutting lever 33 is rotated around the bottom end by the rotation of the cam member ^ ', and the cam portion pushes the roller 36 to the right. Due to the rotation of the linear axis cutting lever 33, _4 said that the engaging body was pressed down. On the other hand, the roller% is 20 ° to the right. [I] causes the * support shaft 17 to rotate counterclockwise with the rotation arm 29. The talent 34 presses the engaging body 35 downward so that the engaging body 35 does not interfere with the tearing action of the engaging pawl. The support shaft 17 is rotated in the counterclockwise direction until the roller 36 is connected to the corner portion 32 of the cam member 32 and spit. By turning counterclockwise of the support shaft 17, the needlework scissors 15 are moved to the right. 23 548360 As mentioned above, the men's needlework 15 moves counterclockwise by supporting the shaft ㈣ and moves forward from the subject position ^ Longzhi. When the needlework scissors 15 are moved from the waiting position to the cutting position, the cam field contact portion 19 of the movable blade 19 is disconnected on the closing plate 25, and is pushed by _plate_. As a result, the rotation of the movable blade 19 relative to the fixed blade 19 causes the needlework scissors 15 to be closed and the blade 20 to be rotated. The needle 5 can be cut by moving up to support the needle 5 side of the needle. When the operating lever is set to the B position, the roller 36 is maintained «removed at the corner portion of the cam element 32, and when the needle thread scissors

Closed in the cutting position. It is expected that the operating lever 10 rotates in a counterclockwise direction, and the operation of the operating lever 10 from the B position to the C position is performed in the following manner. In particular, the roller 27 rotates counterclockwise around the bottom end of the operating lever 10, and straddles the top of the cam 28a that swings the π member 28. As a result, the support shaft 17 and the rotary arm 29 are moved backward by the activation force of the compression spring 30, and the needle scissors 15 are moved backward in the closed state.

On the other hand, the cam member 32 is rotated clockwise around its left end by the rotation of the operation lever 10. By the rotation of the cam element 32, the linear axis cutting lever 33 is further rotated in the clockwise direction, and the roller 36 adjoining the corner portion J2c moves to the cam portion 32a. When the roller% moves to the cam portion 32a, the support shaft π and the rotation arm 29 are slightly rotated in the clockwise direction by the starting force of the tension spring 37. The needlework scissors 15 are moved to the left slightly in the closed state by clockwise movement of the support shaft 17. When the operation lever 10 is moved from the A position to the C position, the wire cutter 50 operates in the following manner. In particular, the linear axis cutting lever 33 rotates around the bottom 24 548360 end by the operation lever 10 through the cam element ^ in a clockwise direction, so that the driving arm 60 rotates in a clockwise direction around it from the bottom surface. . By turning the driving arm _ clockwise, the wire drawing wire cutting link 62 is rotated from the bottom surface around the middle portion through the link element ⑽ counterclockwise 5 direction. By turning the counter-clockwise rotation of the cutting link 62 by the axis, the axis-rotating arm 63 rotates counter-clockwise around the middle portion as viewed from the bottom, and rotates the axis guided by the spool. On the other hand, the lower knife is turned in the counterclockwise direction by cutting the link 62 from the line axis, and rotates clockwise around its bottom end as viewed from the bottom surface. When the lower knife 57 rotates, the φ 10 dog-out portion 56b of the upper knife is connected to the opening portion 51a of the narrow flat bottom 56 so that the upper knife 56 rotates relative to the lower knife 57. As a result, the line axis scissors 52 are closed, but the line axis rotated by the line axis turning arm 63 is cut. Then, set the bobbin side of the bobbin scissors 5 2 that supports the cut bobbin side in the closed state. In addition, when the operation lever 10 is rotated in the counterclockwise direction, the cloth pressing lever 6 15 is raised so that the cloth can be pulled in and out. When the worker releases the operating lever 10, it is rotated upward through the c position to the A position by the activation force of the tension spring 31. When the operating lever 10 is turned from the 0 position to the A position, the needle cutter 12 operates in the following manner. With the operation lever; I; clockwise rotation of 1Q, the roller U returns to its maximum, film, brother ,, σ, and the rocking element 28 first rotates forward, and then rotates backward,-then back, , Li Chu condition. Due to the rotation of the rocking element 28, the support shaft I? And the rotation arm 29 first move forward and then backward, so that the longitudinal position relationship returns to the initial state. Therefore, the longitudinal positional relationship of the needle scissors 15 is the same as the waiting position. 25 548360 On the other hand, the cam element 32 rotates around the clockwise direction of the lever by the operation lever, and its left end rotates counterclockwise. Due to the rotation of the cam member 32, the wire-axis cutting lever 33 rotates around its bottom end in a counterclockwise direction. As a result, the repeated force of the repeated lever 34 on the adapter said that the adapter spoke back to the original state. On the other hand, the roller% moves from the cam portion 32a to the corner portion 32c, and as a result, the cam portion 32b follows the cam element 32 to rotate counterclockwise. When the s roller 36 moves to the cam portion 32b, since the engaging body 35b has returned to the original state, the engaging pawl 29a of the rotary arm 29 is engaged with the side surface of the engaging portion 35c of the engaging body. As a result, the clockwise rotation of the rotary arm 29 is suppressed, so that the roller 36 and the cam portion 32b are loosened. Therefore, the leftward movement of the needlework scissors 15 is also suppressed. As described above, when the position of the operating lever 10 | c returns to the A position, the longitudinal positional relationship of the needle thread J knife 15 returns to the waiting position, and the lateral positional relationship thereof does not return to the waiting position. This position is the end waiting position described above. As described above, the 15 end waiting position is placed on the vertical track of the cloth cutter. The needlework scissors 15 placed in the end-waiting position are set in a state where the needlework is closed and the needlework is supported. When the operating lever 10 is turned from the C position to the A position, the wire cutter spring 50 operates in the following manner. In particular, the thread axis cutting lever 3 can be operated by turning the cap lever 10 in a counterclockwise direction around its bottom end. By turning the clock axis 20 counterclockwise of the cutting lever 33, the driving arm 60 is counterclockwise as viewed from the bottom surface. The clock direction is rotated around the middle portion. As a result, the linear axis cutting link 62 is rotated in the clockwise direction around the intermediate portion through the link member 61. By the clockwise rotation of the linear axis cutting link 62, the linear axis rotation arm 63 rotates clockwise around the middle portion and returns to the original state. In another aspect of 26 548360, the lower blade 57 rotates clockwise by cutting the connecting rod 62 in a clockwise direction around the bottom end to rotate counterclockwise, so that the protruding portion 56 of the upper blade 56 and the narrow flat bottom 51 The abutment of the opening portion 51a is released. As a result, the line cutter * blade 52 returns to the original position in the closed state. ♦ 5 Next 'The worker operates the pedal of the sewing machine so that the sewing machine starts the sewing operation in the next cycle. After the sewing machine starts the sewing operation, the thread cutter 11 operates in the following manner. In particular, in the needle cutter 12, the solenoid 38 is changed from a closed state to an open state, so that the lever 21 rotates in a counterclockwise direction as viewed from the side. Due to the rotation of the lever 21, the second cam surface 2110 is connected to the cam field contact portion 19a 'and the cam contact portion 19a is finally connected to the first cam surface 21b. As a result, the opening cam portion 21a (the second cam surface 2] k and the first cam surface 21b) pushes the cam abutting portion i9c, so that the movable knife 19 is rotated. Then, the needlework scissors 15 are opened to release and support the needlework. After the needle scissors 15 is opened, the solenoid 38 is brought to the closed state, so that the lever 3% and the lever 15 are returned to their original conditions, while the needle scissors 15 are maintained in the opened state. Then, the solenoid 40 is changed from the closed state to the open state, so that the lever 40a is pulled to the left. As a result, the pressing lever 42 depresses the engaging body 35b downward, and the engaging spring catch 29a is released from the engaging body 35b. As a result, the rotating arm 29 is rotated in the clockwise direction by the activation force of the tension spring 37 until the roller% field ratio is connected to the cam portion 32b of the & 20-wheel element 32. The support shaft Π rotates together with the rotation arm 29, and the needle scissors 15 move to the left and finally return to the waiting position. After the needlework scissors 15 return to the waiting position, the solenoid 40 is brought to the closed state, so that the pressure lever 42 is pushed downward to release. In the spool cutter 50, the solenoid 66 is changed from the closed state to the opened 27 548360 open state, so that the rod 66a appears out of the counterclockwise r direction. 、、、 口 果, the operating element 68 is from the bottom surface; the tip part pushes the bolt ⑽ to open and release the wire_. On the line axis cut of 5: = 关 _, 66 is brought to the closed state 彳 / knife 52 makes money, the solenoid operating element is tilted back to the original state, 70 pieces are made, 68 are rotated clockwise, and according to Embodiment ^. The sharp knife edge 11 is driven by a solenoid 38 on the support f 16 and can move with the needle «blade 1.

〇 下 ^ Any position related to the field pole foot arm 7 = dry η is rotated so that needlework scissors, ^

The heart includes the original solenoid% 'needle thread scissors 打开 do not open in interconnection with the movement of the plus arm 7 and the movement of the cloth feeding mechanism. Similarly, since the spool cutter 50 includes the original solenoid, the spool cutter 52 can be opened without being interconnected with the movement of the cloth feeding mechanism. Therefore, when the sewing machine starts the next cycle of the sewing operation, the position of the cloth feeding mechanism is not limited by the opening operation of the double needlework scissors 15 and 52. Therefore, for example, in the embodiment where the sewing operation is performed by moving the cloth feeding mechanism itself, even if the positional relationship between the cloth feeding mechanism and the item to be sewn is not adjusted, the sewing operation in the next cycle is different from the previous cycle. The items to be sewn are the same, and the buttonhole darning can be performed at different positions, and there is no need to set the items to be sewn. As a result, the yield can be increased. In addition, since the scissors 15 and 52 are opened by the previously prepared solenoids% and 66 ', their operation is not affected by the operations of other mechanisms in the sewing machine. In addition, the solenoids 38, 66 are operated electrically. As a result, its operating time can be easily adjusted relative to 28 548360. In addition, the needle thread scissors 15 are driven from the cutting end position to the waiting position by driving the original spool 40. Therefore, the movement can be performed without being interconnected with the feeding mechanism; furthermore, the closing plate μ is a paper-long element. Therefore, the length of the cam is larger than that of the contact portion 5a 19a on the closing year 25. In other words, when the needle-cutter 15 performs the closing operation, the longitudinal range is not affected by the longitudinal position of the presser foot leg 7. In the first embodiment according to the present invention, the details of the structure can be appropriately changed, and it is not to be disclosed in this embodiment. For example, the solenoids 38, 40, and 66 may be air cylinders, and the rods are moved forward and backward. Especially, the needle

The wire scissors 15 or the wire axis scissors 52 can be opened by the air cylinder portion. 15 20 In addition, solenoids, 40 and 66 can be pulsating motors. For example, if the solenoid 38 is a pulsating motor, the driving of the pulsating motor extends laterally, and a swinging element extending in a direction almost perpendicular to the driving shaft is securely provided on the driving shaft. The swinging element abuts on one end of the lever 21. When the pulsating motor works

When rotating in the forward direction, the swinging member pushes one end of the lever 21 forward, so that the needle thread scissors 15 are opened and the needle thread is released as described above. On the other hand, when the pulse motor is rotated in the reverse direction, the pushing force is released, and the needle scissors 15 are maintained in the open state. In addition, if the solenoid 66 is a pulsating motor, the link element ^ is opened by the pulse force of the pulsating horse.... On the contrary, when the link member 67 || is pushed backward by the reverse rotation of the pulsating motor, the 'line axis scissors 52_ are opened. If it is a pulsating motor ', the link element 4111 is rotated by the forward rotation of the pulsating motor, and the needle «knife 15» is returned to the above-mentioned f standby position. Conversely, the 29 548360 element 41 is pushed to the right by the reverse rotation of the pulse motor. [Second Embodiment] Next, a wire cutter according to a second embodiment will be described with reference to Figs. 6 to 8. 5_ The wire cutter according to the second embodiment is provided on a buttonhole darning sewing machine in the same manner as the first embodiment. In the same manner as the first embodiment, in particular, the sewing machine includes a sewing frame, a needle, a straight, a needle bar vertical movement driving mechanism, a needle bar vibration mechanism, a cloth pressurizing rod, a pressurizing The lever foot arm 7 (as shown in Figs. 6 and 7), a cloth feeding mechanism, a force opening lever, and a cloth cutting mechanism. In the second embodiment, the same reference numerals are used for the structures having the same structure as those in the first embodiment, and the detailed description thereof is omitted. ... The wire cutter according to this embodiment includes a needle thread cutter 71 for cutting a needle thread, and a linear axis cutter 90 for cutting a linear axis. First, the needle thread cutter 71 will be described. As shown in Figs. 6 and 7, the needle cutter 71 is composed of solenoids 72, 73 as starters, openable needle scissors 15 and the solenoids 72 and 73 that are driven to open and close the needle scissors 15 by actuation. —Needle scissors driving mechanism 74. Needle scissors driving mechanism 74 A solenoid arm 75 connected to the solenoid 72 is a needle thread cutting base 76 which can be connected to and disassembled from the solenoid arm 75 to support a rotating shaft 77 of the needle thread cutting base 76 which can be moved longitudinally. The bottom 78 and 79 of the rotating shaft 77 are rotatably supported. A lever 21 is rotatably provided on the needle thread cutting base 76, and a lever 80 adjacent to the needle thread cutting base 76 is used to start a lever 80. The tension spring 81 is used to activate the tension spring 30 ′ of the needle thread cutting base 76. A stopper 85 for inhibiting the needle thread cutting bottom 76 from moving forward and the -M provided on the tip portion of the pressure leg foot arm 7 The flat plate 25 is constituted. The 氐 8 79 cattle is solidly connected to the arm body and faces vertically. The rotation axis π is arranged vertically and connected between the bases 78, 79 which can be rotated in a straight direction. A square piece 84 is connected to the middle portion of the rotating shaft 77 which can be rotated laterally about a rotating shaft. The needle-cutting base 76 extends in the longitudinal direction. A middle portion of the needle-cutting base 76 is provided with a perforation 76b facing the teeth through the needle-cutting base 76. The perforated garment is elongated, and the square sheet 84 is slidably disposed in the perforation 76b in the longitudinal direction. As a result, the needle-cutting base 76 can move longitudinally. In addition, the front end of the needle thread cutting bottom can be rotated laterally about the rotation axis 77, and can be vertically rotated around the square film section. The needlework men's knife 15 is provided at the front end of the needlework cutting base 76. The needlework scissors 15 have the same structure as the first embodiment, and include a fixed blade 20, a movable blade 19, a pressing plate 18, and a cam abutting portion 19a. One end of the tension spring 82 is suspended from the front of the needle thread cutting base 76, and the other end of the tension spring 82 is suspended from the arm body. An extension 76a extending to the right is formed on the rear end of the needle thread cutting base 76. The stopper is fixed to the arm body which extends the wound 76a. The solenoid 72 is fixed below the arm body after needle-cutting, and the cup 72a extends forward from the solenoid 72 body. The solenoid 72 moves the lever 72a in the longitudinal direction. A solenoid arm 75 is securely placed on the rod 72a. An extending portion 75a extending to the left is formed on the front end of the solenoid arm 75. The extension portion 75a is provided in front of the extension portion 76a of the needle thread cutting base 76. § When the solenoid 72 is set in the closed state, the solenoid arm is pushed out toward the shaft with the rod 72 & 548360 and the extension part is connected to the extension part 7 (Putian is connected to it). In this state, the 'needle thread cutting base 76 is activated forward with the tension spring 82. The extension portion 76a is engaged with the stopper 75 (Tabi is connected thereto), so that the needle thread cutting · The forward movement of the bottom 76 is suppressed. On the other hand, when the solenoid 72 is changed from the closed state to the open state, the solenoid arm is pulled backwards with the stem. Under the condition that the extension portion 75a is connected to the extension portion 76a (the field ratio is connected to it), the needle cutting base 76 and the solenoid arm are moved backward together by the starting force of the tension elastic member μ. The yoke is connected to a needle thread which can cross the rotation axis transversely to cut 4 parts of the bottom. -A field extending portion 21d extending upward is formed on one end of the crossbar 21. -An opening cam portion 2U is formed on the other side of the cross bar in the same manner as the first embodiment. A cam surface 21b and a second cam surface Uc are formed on the opening cam portion 21a. In the same manner as the first embodiment, the opener cam portion 21 a pushes the cam field ratio portion j 9 a to guide the needlework scissors 15 set in the closed state 15 to the open state. "The solenoid arm 73 is securely placed on the arm body of the rear part of the lever 21. The solenoid 73 is moved by 7% in the longitudinal direction. Luyi's almost L-shaped lever 80 is placed on the lever 21 The abutting part of the front side is on the-plane, and on the right side of the needle thread cutting base 76. The cross bar 80 links * 20 links can be a curved part of the arm body that can be rotated vertically about a rotation axis. One end of the tension spring 81 is suspended on one end of the lever 80, and the other end of the tension spring 81 is suspended on the arm body. The tension spring 81 is activated to rotate the -80 of the lever cup 80 backward. By the activation force of the tension spring 81, one end of the crossbar is connected to the late connection portion of the lever, and the moth connection portion is connected to the front end of the rod 32 548360 73a. In addition, the end of the tension spring 83 is suspended On the middle part of the needle thread cutting base, the other end of the tension spring 83 is suspended from the arm body. By the activation force of the tension spring 83, the right surface of the needle thread cutting bottom 76 abuts on the other end of the lever 80 5 When the solenoid 73 is set to the closed state, the front end of the needle thread cutting base 76 is turned to the right by the tension spring 83. The direction of movement starts. The cam abutting portion abuts on the closing plate 25. As a result, the rightward rotation of the front end of the needle thread cutting bottom 76 is suppressed. In this state, the needle thread scissors 15 are set to the closed state. On the other hand, When the solenoid 73 is changed from the closed state to the open state, the lever 10 罪 21 is turned against the starting force of the tension spring 81 in a reverse direction when viewed from one side (right side), and the lever 80 is rotated on a plane ( From the top), it seems to rotate clockwise. When the lever 80 rotates in the clockwise direction, the other end of the lever 80 rotates to the left to cut the front end of the needle thread. In addition, the opening cam is called the core cup 21 The clockwise rotation pushes the cam thief joint 19a, so that the needle 15 and the thread scissors 15 are opened. In addition, the front end of the needle thread cutting base 76 is connected to the pressing rod and moves vertically together with the vertical movement of the pressing rod. The line cutting 线 will be described. As shown in FIG. 8, the configuration of the line cutting 90 is almost the same as that of the line cutting ㈣ 20 according to the first embodiment. Therefore, referring to the line cutting according to the second embodiment Cutter The same structures as those of the wire cutter 50 according to the first embodiment are marked with the same reference numerals, and only different structures are described. In the wire cutter 50 according to the first embodiment, the wire axis The driving arm 60 of the scissors closing device 53 is connected to the linear axis cutting product lever ^ and the linear axis 33 548360 operates in interconnection with the rotation of the linear axis cutting lever 33. However, in accordance with the second embodiment, In the spool cutter 90, the spool cutter closing device 53 includes an original starter. In particular, the spool cutter closing device 53 includes a 5 solenoid 91 as a starter. The solenoid 91 is fixed in the bottom. A rod 91a extends to the right from the solenoid 91 body. The solenoid 91 moves the rod 91a laterally. In the wire cutter 50 according to the first embodiment, the driving arm 60 is connected to the left end of a link member 61. However, in the wire cutter 90 according to the second embodiment, the rod 91a is connected to the left end of the link member 61. The left end of the link member 10 can be rotated about a rotation axis with respect to the vertical direction of the rod 91a. When the solenoid 91 is set in the closed state, the link member 61 is set so that it is pulled to the left by the tension spring 92, and the wire axis scissors set in the opened state are placed in an initial position. On the other hand, when the solenoid 91 is changed from the closed state to the open state, the link member 61 moves to the right by the tension spring 92 and the wire axis cutting link 62 rotates in a counterclockwise direction from the bottom surface. In the same manner as the spool cutter 50 according to the first embodiment, the spool and scissors 52 are closed due to the counterclockwise rotation of the spool cutting link 62. Then, when the solenoid 91 is changed from the open state to the closed state, the link member 61 moves to the left, and the thread axis scissors 52 return to the initial position of 20 in the closed state. Next, the operation of the wire cutter according to the second embodiment will be explained. The sewing machine on / off control device controls the solenoids 66, 72, 73, and 91 so that the thread cutter operates in the following order. When the sewing machine is in a sewing operation, the wire cutter is set to the initial 34 548360 condition described below. In particular, the ⑴ solenoid 72 is set to the open state, and the needle thread% and the solenoid arm 75 are maintained to be pulled backward with the tension spring f82 reliably. _ The extension of the cutting base 76 is not broken on the stopper 85. The ⑺ solenoid is set in the open state, and the lever 73a is maintained to push the thief joint, and one end of the horizontal 580 is pushed forward by the tension spring 81. As a result, the other end of the lever 80 is maintained to push the front end of the needle thread cutting base 76 against the tension spring 83. Therefore, the 'needlework scissors 15 are placed in the -waiting position. (3) _- The cam surface is called maintenance. Narita ratio is connected to the cam connecting portion 19a, and the needle thread scissors j 5 are set in an open state. (4) The solenoids 66 and 91 are set in the closed state, and the thread axis scissors Gamma 10 are set in the opened state. (5) The 5 protruding parts of the upper knife 56 are connected to the narrow part of the flat bottom 51-the opening part 51a, and the line-scissors ^ are placed in the initial position. After the sewing machine completes the buttonhole darning operation, the solenoid calls the belt to the closed state. As a result, in a state where the extended portion W of the solenoid arm 7S is connected to the extended portion 76a of the needle thread cutting base 15 and 76, the needle thread cutting bottom% and the needle thread scissors μ move forward together with the activation force of the tension spring 82 The extension part Tabita is connected to the stop H85Ji, which stops the forward movement of the needle thread_bottom 76. Next, the solenoid 73 is brought to a closed state. As a result, the abutment of the lever 73a with the abutment portion 21d is released. Then, the lever 80 is rotated counterclockwise by the power of the opening spring 20 of the tension spring 81 (the direction opposite to the arrow h in FIG. 6), and the lever 21 is moved in the clockwise direction (the arrow and the subject in FIG. 6). Opposite direction). Due to the rotation of the lever 80, the front end of the needle thread cutting base 76 is turned to the right by the activation force of the tension spring magic, so that the needle thread scissors 15 are moved to the right. Then, the cam abutting portion 19a abuts on the closing plate 25, and the cam abutting portion 35 548360 breaks and pushes the closing plate 25. As a result, the needlework scissors 15 are closed, and the cutting line = holds the needlework on the needle side. When the needlework scissors 15 are brought to the fully closed position, the needle thread moves to the right of the knife 15 and the front end of the needlework cutting bottom 76 is suppressed by the closing plate 25. In the second embodiment, the needle and thread scissors 15 set in this state are set to an end waiting position. Next, the solenoid 91 is brought to the open position. As a result, the linear axis cutting link 62 rotates counterclockwise as seen from the bottom (from below). By the counterclockwise rotation of the bobbin wire cutting link 62, the bobbin cutter 90 performs the operation of cutting the bobbin in the same manner as the bobbin cutter 50 according to the first embodiment. In particular, the line axis rotating arm 63 rotates the line axis, and the upper blade 56 rotates relative to the lower blade 57 as it rotates. As a result, the line axis scissors 52 are closed and the line axis is rotated by the line axis rotation arm 63. Then, the bobbin scissors 52 set in the closed state support the bobbin side of the bobbed bobbin. Next, the 'solenoid 91 is brought to the closed position, and the link member 61 is pulled to the left by the tension spring 92 by 15'. Therefore, the axis cutting link 62 rotates in the clockwise direction, and the axis scissors 52 return to the original position in the closed state. Thus, a cloth can be pushed forward by manual or automatic pressing action of the worker. Then the worker depresses the pedal of the sewing machine, so that the sewing machine starts the next sewing operation in the 20th cycle. After the sewing operation of the sewing machine is started, the thread-cutting operator operates in the following manner. First, the solenoid 72 is brought to the open state, and the solenoid arm 75 and the needle thread cutting base 76 are pulled back together by the activation force of the tension spring 82. As the needle thread cutting base 76 moves backward, the needle thread scissors u also move backward. 36 548360 The solenoid 73 is then brought to m-up and pushed forward. As a result, Park "w and the mysterious lever 80 rotate clockwise. Turn counterclockwise. As the lever 80 rotates, the needle 5 ends up and turns to the left. On the other hand: knife 15 and needle thread cutting The forward movement of the bottom 76 pushes the cam field ratio connection portion 19a. The cam portion is called the rotation line of the lever 21. Therefore, the solenoid 73 is opened with the opening = scissors 15 opened and the needle opened, and moves to wait. Position, so that the needle thread scissors 15 are then opened, the solenoid 66 is brought to open, and the tip part pushes the plug S6a. The tube 66 is brought to the closed state, and the thread axis scissors 52 are turned in the direction of rotation, and returns to the original state. The operating element 68 is cut by the clock according to the second embodiment; M is set on the needle thread cutting base 76, and Therefore, the crossbar of the thread 73_ is also moved together with the scissors 15 in the needle thread scissors. With this setting, the needle scissors 15 can be positioned at the needle thread cutter 71 by the product bar 21Γ = any position 20 of the presser foot arm 7. Includes the original solenoid 72. In addition, it is interconnected with the pressure lever ㈣7㈣ Can be used without the wire cutter 90 including the original solenoid. Similarly, due to the mobile interconnection of the bobbin cloth feeding mechanism, the wire cutter 52 can be used without the need to start and loop stitching. ， 布 送 _ When the sewing machine is opened by driving in the needle thread cutter 71, the original ^ 'needle thread scissors 15 L 2,73 and the opening and closing 37 548360 closed, and the thread axis scissors 52 by the thread axis cutter 90 The original solenoids 66, 91 are opened and closed. Therefore, the operation time of the wire cutter is not affected by the operation of other mechanisms of the sewing machine. Of course, in the second embodiment according to the present invention, the structure of the specific details may be appropriately changed, and is not limited to that described in the embodiment. For example, the solenoids 66, 72, 73, and 91 may be the air cylinder portions of the forward and backward moving rods. In particular, the solenoids 66, 72 '73 and 91 may be pulsating motors. For example, if the solenoid is a pulsating motor, a rocking element extending in a direction almost perpendicular to the driving shaft by detecting the driving rod of the pulsating motor extending in the direction is firmly provided on the driving shaft. The rocking element abuts on one end of the lever 21. When the pulsating motor is rotated in the forward direction, the rocking element pushes one end of the lever 21 forward, so that the needle-scissors 15 are moved to the left and opened as described above. On the other hand, the pulsating motor rotates in the reverse direction, so that the end of the lever 21 is pushed backward by a tension spring 81 provided on one end of the lever 80. Then, the needle of the needlework scissors 15 moves to the right and closes as described above. [Third Embodiment] Next, a wire cutter according to a third embodiment will be described. 20

A wire cutter according to this embodiment is provided in a buttonhole darning sewing machine in the same direction as the first embodiment. In particular, the sewing machine includes a sewing machine, a "needle", a shuttle device, a needle bar vertical movement driving mechanism, and a sewing machine. Needle-shaft dry vibration mechanism, a cloth pressurizing rod, a pressurizing rod foot 7 (as shown in Figs. 9 and 10), a cloth feeding mechanism, a press rod and a cloth cutting mechanism. In the third example, the same structures as those of the first embodiment are denoted by the same reference numerals, and detailed descriptions thereof are omitted. 38 548360 The wire cutter according to the third embodiment includes a needle cutter 100 (as shown in FIGS. 9 and 10) for cutting a thread guided from a needle and a thread axis cutting device 130 (such as Figure 13). As shown in Figs. 9 and 10, the needle thread cutter 100 has a one-, five-pulse motor as a starter, can open the needle thread scissors 15 and can open and close the needle thread scissors 15 and move the needle thread scissors 15 by driving the pulse motor 101. One needle thread scissors driving mechanism 102. A bottom 103 is provided on a side surface of the arm body 3 (behind the arm body 3 in FIG. 2), and a pulsating motor 101 and a needle scissors driving mechanism 102 are connected to the bottom ® 103. The drive shaft of the pulsation motor 101 extends outward from the base 103 and is rotatable relative to the base 103. The needle thread scissors driving device 102 includes a lever 21, a cam mechanism 104, a needle thread cutting base 105, cam elements 107, 110, flash cams 108, 111, and tension springs 109, 112. A rotating base 106 is provided below the base 103 which can be rotated vertically about a rotating shaft. A longitudinally extending needle thread cutting base 105 is connected to the rotating base 106. The needle thread cutting bottom 105 can slide longitudinally relative to the rotating bottom 106. In addition, the 'cam member 107 is fixed to the left surface of the bottom 103. A cam surface 107a is formed on the left surface of the front end of the cam member 107. The cam surface 107 & 20 inclines forward from left to right. In addition, the bottom end of the latch cam 108 is connected to the left surface of the bottom 103, and the latch cam 108 can be rotated toward a rotation axis on a bottom end thereof. One of the tension springs 109 is connected to the latch cam 108 'and the other end of the tension spring 1 is connected to the bottom 103. The tension spring 109 is actuated from the side (right side) in the counterclockwise direction of the interlocking cam 39 08 548360. -The cam surface ⑽ is formed on a right surface on the other end of the flash cam 108. The cam surface 10 center slopes upward from left to right. The left surface on the other end of the flash cam 108 is flat. On the other hand, the cam element 110 is fixed to the right side of the needle thread cutting base 105, 5 sides. A cam surface 1103 is formed on a right surface of the rear end of the cam element 110, and the cam surface li0a is inclined rearward from right to left. Due to the longitudinal movement of the needle thread cutting base 05, the cam surface 11Ga approaches or leaves the cam surface 7a. Further, the latch cam 111 is fixed to the left surface of the needle-cutting base 105. The latch cam 延伸 extends upward from the needle thread cutting base 105. A cam surface 1Ua is formed on a left surface on the upper end of the flash cam 1U. The cam surface Ula slopes upward from left to right. The right surface of the latch cam ln is flat. When the latch cam Ui moves to the left under the condition that the cam surface lllas of the flash cam 111 is connected to the cam surface 108a of the flash cam 108, the cam rotates upwards about its bottom end. Finally, the abutment of the cam surface 108a and the cam surface ma is loosened, and the left surface of the flash cam 108 is connected to the right surface of the cam cam. A force spring for activating the needle thread cutting base 105 to the right is connected to the middle portion of the needle thread cutting base 105. With the tension spring 112, the needle thread cutting base 105 is rotated around the rotating base 106 in the rightward direction. The right surface of the cam iu is connected to the left surface of the cam 108, so that the rightward rotation of the needle thread cutting base 1 () 5 is suppressed by 20. · In addition, the 'lever 21 is connected to the middle portion of the right surface of the cutting base 105 which can be rotated laterally about the rotation axis. In the same manner as the first embodiment, an open cam portion 21a is provided on one end of the cross bar 21, and a first cam surface 21b and a second cam surface 2lc are formed on the open cam portion 21a 40 548360. . The lever 21 is activated backward by a force spring 39. The needlework scissors 15 are provided on the front end of the needlework cutting bottom 105. The needlework scissors 15 include a pressing plate 18, a movable blade 19, a fixed blade 20, and a cam abutment portion 19a, as in the first embodiment. In addition, a pressing rod 5 9 is connected to the front end of the needle thread cutting base 105. In addition, a closing plate is provided on the tip portion of the pressure lever foot arm 7 in the same manner as in the first embodiment. Further, the cam mechanism 104 is connected to a drive shaft 101a of a pulsating motor 101. The cam mechanism 104 includes a driving cam 113 connected to one of the driving shafts of the pulsating motor 101, a longitudinal cam arm reference 110114 connected to the driving cam 113, and a scissors cam arm 115 connected to the driving cam 113. A bolt 116 on the longitudinal cam arm 114 and a bolt 117 provided on the scissors cam arm 115 are provided on the right side of the bottom 103. The driving cam 113 is a disc-like element, and its central portion is fixed to the driving shaft 15101a of the pulsating motor 101. The driving cam 113 is formed on the outer peripheral portion of the driving cam 113 with one of the detection portions U3a of the driving shaft 101a, and a sensor 118 detects the -edge i 13d of the detection portion 113a. The sensor ii8 measures the edge iUd, and then measures: · The rotation angle of the driving cam 113 is set in the initial condition. The driving cam 3 is provided with a first cam buttonhole 113b and a second cam buttonhole 113c. ^ 20 A cam follower U4a is provided on one end of the longitudinal cam arm 114, and a bolt 116 is provided on the other end of the longitudinal cam arm U4. Further, a middle portion of the longitudinal cam arm 114 is connected to the bottom 103 which is rotated around the rotation axis in a lateral direction. The cam follower 114a slidably engages the second cam buttonhole ii3c. The peg 116 engages a perforation formed on the needle-cutting base 105. The perforation is oblique 41 548360, and the peg 116 can be perforated. The longitudinal 114 rotates around one of the middle eight defeat gate cams, making the bottom of the needle thread cut with a vertical displacement of gravity 0 5. The follower heart is provided on the other side of the scissors cam arm, and the inspection 117 is provided on the other end of the scissors cam arm 115. The "portion of this cam arm 115" is connected to be able to laterally rotate == cam follower-slidable ⑽. ㈣7 The other ~ end of the lever 21. The side of the scissors 10 appears to rotate clockwise, so that the bolt 117 leans against Tension spring 3 = the other end of the crossbar 21 to turn the lever 2 and other aspects, the scissors cam arm = to move counterclockwise ^ '' 料 21 through the material to start the rotation ° In addition, in the first In the three embodiments, the lever 21 rotates against the tension 5 and the early yellow 39 in the same manner as in the first embodiment. As a result, the opening protrusion 15 = called the cam turning portion 19a, so that the setting at _ needle thread scissors 15 is opened. The driving cam 113 is opened It will be explained as follows in conjunction with Figure 11. In Figure Η, the first cam buttonhole 113b and the second cam buttonhole are closed with a center line when the needle thread cutter ⑽ is set in the initial condition (in the machine; at the first sewing 20 operation) Hours), the first cam buttonhole 113b is positioned in the second cam buttonhole

Before, as shown in Figure 11. The first λ and 4 nR younger cam buttonholes 1Ub are relative to the second cam buttonhole U3c around the rotation center of the driving cam 113. The first cam buttonhole 113b is composed of a cam portion 1A, a cam portion m connecting the cam portion 1A, and a function of connecting the cam portion—the rotation of the cam portion between the cam portion ία and the rotation center of the cam 113. In Ren 42, the corner is determined. The distance between j in the rotation of the cam portion and the driving cam ⑴ is smaller from the cam portion toward the cam portion. The distance between the cam π 1C and the center of rotation of the drive cam is fixed at any angle. The first-cam buttonhole 113e consists of a cam portion 2A, a connecting cam portion from a cam portion 2B, a connecting cam portion 2B-a cam portion 2c, and a connecting-wheel crystal 2C-a cam portion 2D, and Connecting the cam part 2D-the cam part 2E. The distance between the center of rotation of the cam portion 2A and the driving cam 3 is ^ at any angle. The cam between the cam portion 2 limb driving cam 113 is reduced from the cam portion 2A toward the cam portion 2C. The distance between the center of rotation of the cam portion 2 (¾¾ the moving cam 113) is fixed at any angle. During the rotation of the cam portion 2D and the driving cam 3, the distance between the cam portion 2C toward the cam portion The weight is increased. On the cam. [Mα 2E and the distance between the rotating towel core of the driving cam 113 is fixed at any angle. In addition, the sensor 118 is connected to the control device of the sewing machine. When the edge 113d is measured 'The sensor 118 sends out the chase measurement signal to the control device of the sewing machine. According to the signal sent by the induction state 118, the control device of the sewing machine decides whether to perform needle and thread cutting.' Gfi is set to the initial state. In particular, only the chase signal is used. In the case of the input from the sensor 118, the control device of the sewing machine determines the rotation position of the hearing shaft 10la of the pulsating motor in the initial condition. When the detection signal comes from the sensor 118 and the detection signal remains as an input Under the condition, it determines the rotation position which is not set in the initial condition. In addition, the control device of the sewing machine can control the pulsation variably through a motor drive 548360 according to a set value Turning speed up to 101. Next, the wire cutter 130 is described. As shown in FIGS. 12 and 13, the wire cutter cutting to 130 is almost the same as the structure of the wire cutter according to the first embodiment. The same structures of the wire cutter 50 have the same reference numerals, and only different structures are described below. In the wire cutter 50 according to the first embodiment, the driving arm 60 of the wire cutter closing device 53 is connected The wire-axis cutting lever 33 is operated in conjunction with the rotation of the wire-axis scissors closing device 53 and the rotation of the wire-axis cutting lever 33. Further, the wire-axis scissors opening device 54 is activated by the driving operation of the solenoid 66. However, In the bobbin cutter 13 according to the third embodiment, the bobbin cutter closing device 53 and the bobbin cutter opening device 54 are operated by a driving force of a pulse motor 131. In particular, the bobbin cutter 130 includes an openable The line-scissors 52 are used to guide the line-scissors 52 set in the open state to a closed-line 15 line-scissors closing device 53 and used to guide the line-scissors closing device 53 The linear axis scissors 52 in the state to the open state of the linear axis scissors 54 in the open state is a pulsating motor 131 (shown in FIG. 12) as a starter, which is used to operate the rotation of the pulsating motor 131 At the same time, the wire thread scissors closing device 5 3 is operated, and the operation device 133 of the 20 line axis scissors opening device 54 is operated by another rotation operation of the pulse motor 131, and the bottom of the motor 131 is used to support the pulse. 132 (not shown in Figure 12). The bottom 132 is a flat plate-shaped element and is fixed into an almost horizontal bottom. The financial motor 131 is fixed to the lower surface of the bottom 132. The driving motor 131a of the pulsating motor 131 is upward from the bottom 132 Projecting and rotatable relative to the bottom 132. 44 548360 The operating device 133 includes a second driving cam 134, a first link element 135, and a second link element 136. The second driving cam 134 is provided on the bottom 132. The second driving cam 134 is an almost disk-shaped element, and an intermediate portion (its center of rotation) is fixed to the driving shaft 131a. The second driving cam _ 5 134 rotates as the driving shaft 131 a rotates. A detection portion 134a is formed on the outer peripheral portion of the second driving cam 134, and a sensor 137 detects an edge 134d of the detection portion 134a. The sensor 137 measures the edge i34d, and presumably detects the rotation angle of the second driving cam 134 to be set at the most out of position. The second driving cam 134 is provided with a first cam buttonhole 134b and a second cam buttonhole 134c. The first cam buttonhole 134b is opposed to the second cam buttonhole 134c around the rotation center of the second drive cam 134. The younger cam buttonhole 134b includes a cam portion 3A, a cam portion 3B connected to the cam portion 3a, and a cam portion sc connected to the cam portion 3B. The distance 15 between the cam portion 3A and the center of rotation of the second driving cam 134 is fixed at any angle. The distance between the rotation center of the cam portion 3B and the second driving cam 134 is increased from the cam portion 3A toward the cam portion 3 (:. The distance between the cam portion 3C and the rotation center of the second driving cam 134 is increased. The relief is fixed at any angle. The first cam buttonhole 134c is composed of a cam portion 4A, a cam portion 4B connected to the cam portion 4a 20, and a cam portion 4c connected to the cam portion 4B. The distance between the rotation center of the cam portion 4A and the second driving cam 134 is fixed at any angle. The distance between the rotation center of the cam portion 43 and the second driving cam 134 is directed from the cam portion 44A. The cam portion 4 匸 is increased. The distance between the cam portion 4C and the rotation center of the second driving cam 34 is 45 548360. The distance is fixed at any angle. The cam k moving portion 135a is provided in an L-shaped first connection. On one end of the lever element 135, and can slidably engage the first-cam buttonhole 134b. The first-link% · = 5㈣ is vertically oriented around the-rotation shaft connected to the bottom-bend. 5 crystal on. The first-link The other end of the element 135 is rotatably connected to the line. The rear end of the link element of the knife closing device 53. The link element extends laterally in the first embodiment, and the link element extends longitudinally in the third embodiment. The front end of the link element 61 is rotatably One end of the connecting wire secret cutting material 62. 10 A cam follower 13 仏 is provided on one end of an L-shaped second link member 136 and slidably engages the second cam buttonhole 134c. The second link member 136 The connection is connected to a curved portion of the bottom portion about a rotation axis in a vertical direction. The other end of the second link member 136 is rotatably connected to the rear end of the link member 67 of the wire-axis scissors opening device 54. 15 , The sensor 137 is connected to the control device of the sewing machine. When the edge 134d is detected, the sensor 137 outputs a detection signal to the control device of the sewing machine. According to the signal sent by the sensor 137, the control device of the sewing machine determines whether or not The cutter 130 and the needle and thread cutter 100 are set in the initial state in the same manner. 2 In addition, the control device of the sewing machine can control the pulsating horse variably through a motor drive and an electric circuit according to a set value The rotation speed of 131. Fig. 15 is a block diagram showing the structure of a sewing machine applied to the third embodiment. The sewing machine has a structure in which each drive source is connected to a control circuit 46 210 ° 548360 The control circuit 210 has a structure of A ROM (Read Only Memory) 2i2, a RAM (Random Access Memory) 213, a γ for feeding each pulsating motor · fed into the pulsating motor driver 214, a needle position feeding into the pulsating motor driver · 5 215, A needle vibration is fed into the pulsating motor driver 216, a needle thread cutting starter 217, a linear axis cutting starter driver 218, a sewing machine motor driver 219, and a cylinder driver 228 connected to a CPU (Central Processing Unit) 211, as in the first Figure 15 shows. In addition, an operation panel 200, which will be described in detail below, is connected to the CPU 211 to give a start switch 225 for starting the seam, blade operation, and a sensor 137 for the spool cutter 1. A γ-feed pulsation motor 220 driven by a Y-feed pulsation motor driver 214 feeds a cloth in a pre-rolling direction, and a stitch is formed on the cloth to support an ugly buckle during a sewing operation. 5 The needle vibration feed pulse motor 222 driven by the needle vibration feed pulse motor driver 216 can support a needle that vibrates in the width direction by a predetermined distance. Φ Feed pulse motor driver 215 with needle position to drive one needle position feed * The pulse motor 221 can change the needle position of the needle's vibration action. 〇The _pulse motor (a needle thread butterfly · Yidongyi) 101, which is driven by a wire cutting starter 217, can drive a needle thread cutter for cutting the thread passing through the needle after the initial sewing operation is completed, and can be, for example, _ Motor or-solenoid. A pulsating motor 131 driven by the thread axis cutting starter driver 21δ can cut only a spool 47 548360 line attached to the cloth from the stack after the sewing operation is completed, which will be described in detail below. A sewing machine motor 驱动 driven by a sewing, blade motor driver 2 j 9 can rotate a main shaft to drive the needle and shuttle. · ROM 212 stores buttonhole control data and-control program 212a. In addition, ROM 212 has a seam preliminary data base 212b and stores array patterns and shell materials to indicate the size and shape of the perforations of the buttonholes formed on it. The CPU 211 controls each motor and the starter via each driver according to the signals input from the operation panel 2000 several switch inputs and the detection signals sent from the unsung sensors, and the control is based on the predetermined setting by setting the RAM 213 The area controller 10 becomes a work area and is executed by the control program 212a stored in the ROM 212. In particular, when the switch 225 is started, the CPU drives the sewing machine motor 150 ′ γ to feed the pulsating motor 22 〇, the needle position is fed to the pulsating motor 221 and the needle vibration is fed to the pulsating motor 222 through each driver to form a buttonhole needle. Seam. In addition, the CPU 211 drives a cloth cutting blade round 15 cylinder portion 229 via a cylindrical driver 228 to form a buttonhole with a cloth cutting blade. In addition, the pulsating motor 101 and the pulsating motor 131 are respectively driven to cut the needle thread and the thread axis after the buttonhole perforation is completed, respectively. Lu will now explain the operation of the wire cutter with reference to the diagram in FIG. In the graph shown in Fig. 14 (a), the horizontal axis represents the amount of rotation of the drive shaft 101a obtained when the pulsation motor 101 is set to the initial state. The vertical axis indicates the vertical distance moved from the initial state of the needle-cutting base 105 (needle-scissors 15), the horizontal distance moved from the tip of the needle-cut base 105 (needle-scissors 15), and the opening amount of the needle-thread scissors 15 . In the graph shown in FIG. 14 (b), the horizontal axis represents the amount of rotation of the drive 48 548360 shaft 131a obtained when the pulsating motor 131 is set to the initial state. Vertical axis: The initial state of rotation indicates the distance moved from the initial state of the line scissors 52 (lower knife 57) and the amount of self-operation element 68m. First, the "needle thread cutter" is set to the following initial conditions at the time of sewing of the machine. In particular, the edge is measured by the device,

10 The drive_1Gla and the shaft cam 113 of the pulsating motor UH are formed in the initial state at an angle. Result 'The cam follower ⑽ is positioned on P of the second cam buttonhole 113c (as shown in FIG. 11), and the cam follower is retracted on the Q of the first cam buttonhole ⑽ (as shown in _) . (2) The damaged rod-like end is positioned on the rear part by the starting force f of the tension spring 39. Therefore, the opening cam portion 21a is not connected to the cam thief receiving portion ⑼. & The material shears are kept open. The right surface dimension of the rigid cam ln is detailed on the left surface of the flash cam 108. As a result, the rightward rotation of the needle thread cutting base 105 by the tension spring 112 is suppressed. (4) The cam surface 15 of the cam element u0 does not abut on the cam surface 107a of the cam element 107. (5) The needlework scissors 15 are positioned so as to be separated from the vertical track of the cloth cutting knife and the vertical guideway of the needle. especially,

The needlework scissors 15 are positioned in a waiting position in the opened state. In particular, the 疋 'thread axis cutter 130 is set to the following initial conditions when the quilting knife of the sewing machine is operated. In particular, (1) the edge 134d is measured by the sensor 137, and the driving shaft 131a of the pulsating motor 131 and the second driving cam 134 form a rotation angle in the initial condition. (2) The cam follower 135a is positioned on R of the first cam buttonhole 134b (as shown in FIG. 12), and the cam follower 136a is positioned on S of the second cam buttonhole 134c (as shown in FIG. 12) ). (4) A protruding portion 56b of an upper knife 56 does not abut an opening portion 51a 49 548360 of one of the narrow flat bottoms 51, and the thread axis scissors 52 are placed at the initial position. As a result, the line axis scissors 52 are maintained in the open state. When the control device rotates the arterial motor 101 in the forward direction after the sewing operation is completed, the driving cam 113 rotates in a counterclockwise direction (direction 5 of arrow K in FIG. 11), and the cam follower 115a slides the cam portion 1A. However, due to the distance between the cam portion 1A and the rotation center of the driving cam 113, the scissors cam arm 115 does not rotate. On the other hand, when the cam follower 114a rotates the sliding cam portion 2D in the counterclockwise direction of the driving cam 113, the distance between the center of rotation of the driving cam 113 and the cam follower 114a increases according to the sliding. Therefore, the cam follower 114a moves backward, and a longitudinal cam arm 114 rotates in a clockwise direction as seen from one side. As a result, the peg 116 is rotated forward and the needle-cutting base 105 is moved forward. When the latch cam 111 moves forward with the forward movement of the needle thread cutting base 105, the abutment of the right surface of the latch cam 111 and the left surface of the latch cam 108 is released, and 15 between the cam surface 107a and the cam surface 108a The distance increases. When the right surface of the latch cam 111 and the left surface of the latch cam 108 abut and release, the front end of the needle thread cutting base 105 is rotated to the right around the base 106 by the activating force of the tension spring 112. By turning the needle thread cutting base 105 to the right, the cam © contact portion 19a is connected to the closing plate 25. In the same manner as the first embodiment, the needle cutter 20 and the knife 15 are closed. The needlework scissors 15 are closed to cut a needle thread and support the cut needle thread. In addition, when the driving cam 113 rotates in the counterclockwise direction, the cam follower 114a slides the cam portion 2E, and the distance between the cam portion 2E and the rotation center of the driving cam 113 is fixed. Therefore, even if the cam follower 114a 50 548360 slides the cam portion 2E, the longitudinal cam arm 114 does not rotate and the forward movement of the needle thread cutting base 105 stops. Then, the control device turns the arterial motor 101 in the reverse direction. When the driving shaft 101a of the pulsating motor 101 returns to the original state (reverse rotation with the same number of pulsations as the pulsating 5 of the forward rotation), the control device prevents the reverse rotation of the pulsating motor 101. By the reverse rotation of the pulsating motor 101, the driving cam 113 rotates in a clockwise direction (the direction of the arrow shown in FIG. 11), the cam follower 115a slides the cam portion 1A, and the cam follower 114a slides the cam portion Part 2E, and cam part 2D. As a result, the scissors cam arm 115 is not rotated, and the longitudinal cam arm 114 is rotated in the counterclockwise direction, and the needle thread cutting base 105 is moved backward. When the cam member 110 and the needle thread cutting base 105 move backward, the cam surface 110a abuts on the cam surface 107a. In addition, when the cam element 110 and the needle-cutting base 105 move backward, the front end of the needle-cutting base 105 is rotated backward by the cam element 110 and the cam element 107 against the activation force of the tension spring 112. Next, when the control device rotates the arterial motor 131 in the forward direction, the second driving cam 134 rotates in a clockwise direction (in the direction of the arrow shown in FIG. 12), and the cam follower 136a slides the cam portion 4A. however. Since the distance between the center of rotation of the cam portion 20 4A and the second driving cam 134 is not constant, the second link member is not rotated. On the other hand, the cam follower 135a slides the cam portion 3B by clockwise rotation of the second drive cam 134, and the distance between the center of rotation of the second drive cam 134 and the cam follower 135a decreases according to sliding . Therefore, the cam follower 135a moves to the right and 51 the first link member 135 rotates in a counterclockwise direction as seen from the bottom. Due to the rotation of the first link member 135, the linear axis rotation arm 63 rotates counterclockwise as viewed from the bottom, and the lower blade 57 rotates in a clockwise direction. After turning 蚪, the line axis rotating arm 63 rotates a line axis to the bottom after adjoining the line axis: π e ^ ^ x 7. On the other hand, the 'line axis scissors 52 are closed by the rotation of the lower knife 57 to cut the rotating line axis and support the cut line axis. Before the line # 63 is connected to the line axis, the control device reduces the rotation speed of the pulsating motor 1. As a result, the rotation speed of the linear axis rotating arm 63 is reduced after the linear axis is rotated # 63 after the linear axis is rotated. Therefore, it is possible to prevent the line axis rotating arm 63 from cutting the line axis by mistake. In addition, the rotation speed of the line-scissors 52 is also reduced, so that the line-axes may not slip off from the line-scissors 52. In addition, when the first driving cam 134 rotates in the clockwise direction, the cam follower 135a slides the cam portion 3A. The distance between the cam portion 3A and the rotation center of the second driving cam 134 is fixed. Therefore, even if the cam follower 135a slides the cam portion 3A, the first link member 135 is not rotated. Therefore, the linear axis burr 52 is not rotated. In particular, the line axis scissors 52 are placed in the cutting position in the closed state. Then, the control device turns the arterial motor 131 in the reverse direction. When the drive shaft 131a of the pulsation motor 131 returns to the original state (reverse rotation with the same number of pulsations as the forward rotation pulsation), the control device stops the reverse rotation of the pulsation motor 131. By the reverse rotation of the pulsating motor 131, the second driving cam 134 rotates in the counterclockwise direction, the cam follower 136a slides the cam portion 4A, and the cam follower 135a slides the cam portion 3A. And the cam part 3B. As a result, the second competent element 136 does not rotate, and the first link rotates 548360 in a clockwise direction. The initial position in the closed state as the first link member 135 is rotated. The bobbin scissors 52 are returned to the next position. Next, the worker depresses the sewing machine's pedal-loop sewing operation. During sewing ___, proceed as follows. ’After the sewing machine starts to operate, the wire cutter

Baixian 'When the control device reversely rotates the arterial moving motor 101, the driving cam 113 rotates in a clockwise direction' while the cam follower ma slides the cam portion 2C, and the cam follower U moves the cam portion 1B. Since the rotation center of the cam portion 2C 10 and the driving cam 113 is different, the longitudinal cam arm H4 does not rotate, and the needle thread cutting base 105 does not move forward. on the other hand,

Since the cam follower 115a slides the cam center and the portion 1B between the cam follower 115a, the distance during the rotation of the drive cam 113 is reduced. Therefore, the cam follower P115a moves backward. As a result, the scissors cam arm lb is rotated one mile from the side, and the bolt 117 is moved forward. Therefore, the inspection pushes the other end of 桢 = 21 forward, and the lever 21 rotates counterclockwise from the side, and by turning the lever 21, the cam portion 2la is opened to push the cam field contact portion 19a and the needlework scissors 15 Open and release the needle thread.

In addition, when the driving cam 113 rotates in the clockwise direction, the cam follower 4aw moves the cam portion 2B, and then the cam portion 2A and the cam follower P115a / f move the cam portion 1C. As the cam part 1C and the driving cam 113 rotate, the distance between η, β is fixed, and the scissors cam arm 115 is not re-exported. When the lever 21 is pushed forward, the scissors cam arm 115 stop. In another aspect, since the cam follower 1143 slides the cam portion 2B, the distance between the rotation center of the drive 113 and the cam follower 114a decreases by 53 548360. Therefore, the cam follower 114a moves forward. As a result, the longitudinal cam arm 114 rotates in the counterclockwise direction, and the peg 116 moves backward. Therefore, the cam element Π0 moves backward together with the needle-cutting base 105. Then, the needle thread cutting base 105 is turned to the left through the cam element 107 and the cam 5 element 110 by the starting force of the tension spring 112. When the needle thread cutting base 105 is turned to the left, the cam surface 111a of the latch cam 111 abuts on the cam surface 108 of the latch cam 108. In addition, when the needle thread cutting base 105 rotates to the left, the cam surface 丨 ^ pushes the cam surface 10 and the latch cam 108 rotates upward around one of its bottom ends. Finally, the latch cam 111 is moved to the left of the latch cam 108, so that the cam surface 1Ua of the flash cam lu and the cam surface 108a of the flash cam 108 are loosened. As a result, the flash cam revolves downward around the bottom end by the tension of the starting force of the elastic yellow 109. 15 20

Next, when the control device rotates the arterial motor in a forward direction, the driving cam 113 rotates in a counterclockwise direction and the cam follower u4a slides the cam portion 2A. Next, the cam portion of the cam follower receives Sliding cam

Since the distance between the cam portion lc and the rotation center of the driving cam 113 is fixed, the scissors cam arm 115 does not rotate. Stop when pushing forward _ suppress. Therefore, the cam arm 115 and the camshaft move the cam portion 114 in a clockwise direction toward the cam arm 114. And the tying of 116-Jan-1J drought like heavy six. As the cam element 110 moves forward with the needle thread cutting base 105, the longitudinal position of the bottom 105 finally becomes the same as at the beginning and the needle thread π ^ ^, the lower longitudinal position 冋. When the needle thread cutting base 105 moves backwards, the button cuts the base ^ JU ^ ^ ^ ,, ,,, and the knife cuts the base 105 to the left by using the starting force of 5 Zao Shi 5 Zao Huang 112. When turning the needle and thread cutting bottom l · 54 548360 and turning, the left watch ㈣ of wheel 0808 is connected to cruise ship ⑴. As a result, the rightward rotation of the needle thread cutting bottom is suppressed and the lateral position of the needle thread cutting ^ 105 becomes the same as the horizontal position at the initial state of 0. = Yes' When the cam follower 114a moves from the cam portion 2B to the cam portion 2 :, the needle thread cutting base 105 is placed in a position in the initial state, and the needle thread is placed in a waiting position in the opened state. In addition, when the driving cam ⑴ is rotated in the counterclockwise direction, the cam portion 114a slides the cam portion 2C 'and the cam follower slides the cam portion 1B. Thanks to the cam part 2. And the second center of rotation of the driving cam 113 is mosquito-free, and the longitudinal cam arm m does not rotate. Therefore, the needle thread cutting end ^ does not move under the most severe conditions, and the needle thread scissors 15 * move from the waiting position. On the other hand, when The cam follower U5a slides the cam part ㈣ When the scissors cam arm 115 rotates in the counterclockwise direction, the scissors cam arm rotates out, and the clock direction rotates 'and _ backwards. As a result,' Lever City 15 Zan 39's activation force to follow The clock direction rotates, and the cam portion 21a is opened, and the cam field contact portion 19a is separated. Then, when the forward rotation is the same pulse as the reverse pulse, the control device stops the forward rotation of the pulsating maca 1 so that the needle thread The cutter 100 is guided to the initial state. In the T-blade 20 Next, when the control device rotates the arterial motor 131 in the reverse direction, the second driving cam = 4 rotates in a counterclockwise direction (the direction of the arrow claw shown in FIG. 12) ) Convex = moving: 35a sliding cam part A convex Γ = 4 is the cam part 4C. Because the distance between the centers of rotation of the second drive ㈣134 of the cam part is _ fixed, the first link element 55 548360 5 10 15 2 〇piece 135 is not turned, The line-scissors 52 have not moved the f-wheel follower n6a, sliding the cam portion 4β, and the force. On the other hand, because the convex center and the cam follower 136a, the second drive cam says that the rotation element is clockwise. As a result, the rotation of the second link 136 is small. As a result, the second link 136 rotates, and the operation section 68 is viewed from the bottom. Rotate and set—Ji Cai Wang Chiguo 'in the closed condition and release the thread axis. The thread axis scissors 52 are opened. In addition, when the second driving cam 134 is called the sliding cam part 4C ^ H to rotate The distance between the centers of rotation of the cam_ is fixed == and ㈣ is not rotated ^ Therefore, the line scissors 52 is maintained in the open state / the element 136 is driven in the forward direction_pulsation motor 13 ♦ the second cam ^ 3C is moved, Make the cam follower fine a slide wheel ^ / cam follower part slide the cam part 4C, and convex ^ B. Since the distance between the cam part 3C and the second _ is fixed, the first link = wire scissors 52 is not moved. Thrust and bobbin ... On the other hand, the cam follower 13 is like a sliding protrusion. Some of the two connecting rods 70 and 136 rotate counterclockwise as viewed from the bottom. Due to the rotation of the first stem = 136, the 'operation element 68 moves clockwise from the bottom', and # is the tip of the element 68 And the rotation of the bolt 56a is released. However, when the vertical operation is performed with the same number of pulses as the number of reverse vibrations, the control device stops the forward rotation of the pulse motor 131 and the line axis.

56 548360 The cutter 130 is guided to its original condition. According to the wire cutter of the third embodiment, a cross bar 21 driven by a pulse motor ⑻ is provided on the needle thread cutting base 105, and the lever 21 can be moved together with the needle thread scissors 15. Therefore, also when the needle-scissors 15 are placed at any relative position with respect to the pressure arm foot arm 7, the needle-scissors 15 can be opened by the rotation of the lever 21. In addition, the needle thread cutter 100 includes the original pulsating motor 101, and the thread cutter 130 includes the original pulsating motor 131. Therefore, the needle thread scissors µ and the thread axis scissors 52 are opened without being interconnected with the presser foot arm 7. Therefore, the position of the cloth feed mechanism is not limited by the opening operation of the needle scissors 15 and 52 when the sewing machine starts the sewing operation in the down-cycle. In addition, if the needle thread cutting _ and the bobbin fairy cutting nm are performed by the pulsating motor f knife close_ 2 operations. Therefore, the components and prices of the 'wire cutter' can be reduced. OK, 2 1 = The third solid Saki 'specific structure according to the present invention has been modified bismuth appropriately, and is not limited to this embodiment. 15 [Effects of the invention] _In the present invention, the wire package includes a button. Thanks to the launcher

,, -j knife and line axis scissors to open state. Therefore, at the end of the fine sewing operation that opens the scissors and does not move with the cloth feeding mechanism, the needle—but this time, when the sewing machine's 20, and, and to the knife execute the next-cycle stitching, the cloth is fed. The first encounter with the organization is at first glance, so, for example, below; the opening operation of ten-line scissors affects. Due to the rushing of the object, such as the sewing operation and the previous loop order, even if the cloth feeding mechanism ΙΓ buttonhole weaving _ is not executed, the following: the relationship is not adjusted, sewing, execution, without re- Set 57 548360 objects to be sewn. Therefore, the yield can be increased. In addition, the scissors are opened and closed by a starter originally provided in the wire cutter. Therefore, the opening and closing time of the scissors is not affected by the operation of other mechanisms of the sewing machine. Therefore, the time for opening the scissors in the sewing condition can be easily changed. 5 [Brief description of the drawings] FIG. 1 is a sectional perspective view of the wire cutter according to the first embodiment; FIG. 2 is a side view of the wire cutter according to the first embodiment; and FIG. 3 is a side view according to the first embodiment Plan view of the wire cutter; Figure 4 is a front view of the wire cutter according to the first embodiment; 10 Figure 5 is a bottom view of the wire axis cutter according to the first embodiment; Figure 6 is based on the second implementation A sectional perspective view of the needle thread cutter of the example; FIG. 7 is a plan view of the needle thread cutter according to the second embodiment; FIG. 8 is a bottom view of the thread axis cutter according to the second embodiment; 15 is a sectional perspective view of the needle thread cutter according to the third embodiment, and FIG. 11 is a side view of a cam mechanism in the needle thread cutter according to the third embodiment; Fig. 12 is a bottom view of a wire cutter according to the third embodiment; 20 Fig. 13 is a sectional perspective view of the wire cutter according to the third embodiment; Fig. 14 is a view showing a wire cutter according to the third embodiment Operation Inter graph; 15 displays a graph as one of the buttonhole darning seam embodiment of the present invention, a block diagram of the whole configuration of 58,548,360 of the sewing machine. [Representative symbols for the main components of the figure] 1 Bottom 8 Roller 1A Cam part 9 Press lever 1B Cam part 10 Operating lever 1C Cam part 11 Wire cutter 2 Drum 12 Needle cutter 2A Cam part 13 Needle cutting section 2B cam section 14 Needle cutting driving section 2C cam section 15 Needle scissors 2D cam section 16 Support arm 2E Cam section 16a Tip 3 Arm body 17 Support shaft 3A Cam section 18 Pressing plate 3B Cam section 19 Removable blade 3C Cam portion 19a Cam® ratio portion 4 Sewing machine frame 20 Fixed blade 4A Cam portion 21 Lever 4B Cam portion 21a Open cam portion 4C Cam portion 21b First cam surface 5 pin 21c Second cam surface 6 Pressure lever 21d Field-specific connection part 7 Pressure lever foot arm 22 Bolt 7a Support arm 23 Support part

59 548360 24 Bearing element 38 Solenoid 25 Closed plate 38a Rod 26 Roller connection 39 Tension spring 27 Roller 40 Solenoid 28 Swing element 40a Rod 28a Cam 41 Connection element 29 Rotating arm 42 Pressure lever 29a Engagement pawl 50 Axis cutter 30 Compression spring 51 Narrow flat bottom 31 Tension spring 51a Opening section 32 Cam element 52 Axis scissors 32a Cam section 53 Axis scissors closing device 32b Cam section 54 Axis knife opener 32c Corner Copies 55 Narrow flat plate 33 Axis cutting lever 56 Upper knife 34 Press lever 56a Peg 34a Tip 56b Protruding portion 35 Engagement mechanism 57 Lower knife 35a Support body 57a Bottom end 35b Adapter 58 Leaf spring 35c Adapter 59 Ball bolt 35d Compression Spring 60 Drive arm 36 Roller 61 Solenoid 37 Tension spring 62 Wire axis cutting link

60 548360 63 Axis reel arm 81 Tension spring 64 Link element 82 Tension spring 65 Link element 83 Tension spring 66 Solenoid 84 Square piece 66a Rod 85 Stopper 67 Link element 90 Thread cutter 68 Operating element 91 Solenoid 69 Tension spring 91a Rod 70 Needle tube 92 Tension spring 71 Needle cutter 100 Needle cutter 72 Solenoid 101 Pulse motor 72a Rod 101a Drive shaft 73 Solenoid 102 Needle scissors drive mechanism 73a Rod 103 Bottom 74 Needle thread Scissor drive mechanism 104 Cam mechanism 75 Solenoid arm 105 Needle thread cutting base 75a Extension 105a Perforation / cam follower 76 Needle thread cutting base 106 Rotating bottom 76a Extension 107 Cam element 76b Perforation 107a Cam surface 77 Rotating shaft 108 Latch Cam 78 bottom 108a Cam surface 79 bottom 109 Tension spring 80 Lever 110 Cam element

61 136a Cam follower 137 Sensor 150 Sewing machine motor 200 Operation panel 210 Control circuit 211 CPU (Central Processing Unit) 212 ROM (Read-only memory) 212a Control program 212b Sewage material bottom 213 RAM (Random access memory ) 214 Y feed pulsation motor driver 215 Needle position feed pulsation motor driver 216 Needle vibration feed pulsation motor driver 217 Needle thread starter 218 Thread axis starter driver 219 Sewing machine motor driver 220 Y feed pulsation horse 221 Needle position feed pulsation motor 222 Needle vibration feed pulsation motor 225 Start switch 228 Cylinder driver 229 Cutter cylinder 110a Cam surface 111 Latch cam 111a Cam surface 112 Tension spring 113 Drive cam 113a Detection section 113b First cam buttonhole 113c Second cam buttonhole 113d Edge 114 Cam arm 114a Cam follower 115 Scissor cam arm 115a Cam follower 116 Peg 117 Peg 118 Induction part 130 Thread cutter 131 Pulse motor 131a Drive shaft 132 Bottom 133 Operation Device 134 second drive cam 134 a Detection section 134b First cam buttonhole 134c Second cam buttonhole 134d Edge 135 First link element 135a Cam follower 136 Second link element 62

Claims (1)

548360 Guide the line scissors set in the open state to the closed state, and guide the line scissors set in the closed state to the open state by the other direction of the pulsating motor. 6. For the wire cutter of claim 5, the at least one pulse motor driving speed that guides the wire axis scissors 5 to a closed state and guides the wire axis scissors to an open state is variable. 7. For example, the wire cutter of the scope of application for patent includes a starter for driving the needle scissors set in the open state to the closed state, and driving the needle scissors set in the closed state to the open state. , And 10 drives the line and axis scissors set in the open state to the closed state, and drives the line and axis scissors set in the closed state to the open state. 8. The wire cutter according to any one of claims 1 to 7, wherein the starter is one of a solenoid, an air cylinder and a pulse motor. 64