TW201104035A - Top thread holding device of sewing machine - Google Patents

Abstract

To easily and reliably disengage a thread ring of a top thread penetrating through a thread capturing part and improve the sewing efficiency and endurance. The top thread holding device of the sewing machine comprises: a first clamping member with the thread capturing part which comprises a capturing part opened to the up-and-down moving path of a needle and an open-close plate for opening and closing the opening of the capturing part; a second clamping member arranged inside the thread capturing part and guided by the capturing part to approach and separate from the first clamping member toward the direction of the opening of the capturing part; a driving mechanism for driving the opening of the capturing to the rear side and driving the first clamping member and the second clamping member to move; and an open-close motion mechanism for driving the open-close plate to act to open the opening of the capturing part when moving from the clamping position to the releasing position after the second clamping member starts to move to the separating direction relative to the first clamping member.

Description

201104035 VI. Description of the invention: [Voice ^ Ming belongs to ^^ ^^彳] Field of the Invention The present invention relates to maintaining the cut end of the upper thread that is cut at the time of sewing until the predetermined needle is dropped at the start of sewing The upper thread holding device of the sewing machine. C jgtT BACKGROUND OF THE INVENTION For example, as shown in the description of Patent Document 1, the line end portion of the upper thread that is cut at the time of sewing is formed from the first stitch to be started to fall, in order to surely form the seam to be sewn. A thread holding device for a sewing machine that is held on the back side of the needle board until the number of stitches is predetermined is known. As shown in Fig. 19, the above-described upper thread holding device 2〇1 is provided with a second gripping member 2〇2 having a flat frame-shaped line catching portion 2〇3: it is guided to the line at the front end portion. The second holding member 2〇5 of the second holding portion 206 that is movable in the front-rear direction in the line capturing portion 2〇3 on both side faces of the capturing unit 2〇3 is oriented toward the second holding portion 2〇6 The biasing spring 2 that biases the first holding member 2〇2 and the second holding member 205 in the forward direction of the line capturing unit 2〇3 supports the first lost position so as to be movable in the front-rear direction. The member 2 〇 2 and the support member 2 〇 8 of the second lost member 205 and the second force of the second lost member 2 〇 5 are moved by the rotational force ' from a drive mechanism (not shown) The cam member 209 that moves in the rear direction. The inner surface of the inner surface of the line capturing portion 203 that faces the second holding portion 2〇6 is referred to as the i-th lost portion 2〇4, and the i-th clamping portion 2〇4 is at 201104035 and 2 The gripping section is called the upper line. Further, the second untwisted cymbal is oscillated in such a manner as to move together with the first nip portion when the upper thread is gripped. In the case where the parallelism between the abutting surfaces of the first holding portion 2〇4 and the second holding portion is insufficient due to the attachment error, the abutting surfaces are closely contacted. And depending on the thickness of the upper thread or the clamping position, the upper thread can be surely clamped. In the above-described sewing machine equipped with the upper thread holding device 201, when the first needle drop (first needle) for starting sewing is performed, the needle N is lowered by the needle up position above the cloth. At this time, the cut end which is inserted into the upper thread τ of the threading hole Na formed at the lower end of the needle is in a state of being suspended by the threading hole Na above the cloth c placed on the needle board. The lower end of the needle N passes through the cloth c and is lowered by the pinhole of the needle plate p and the frame of the wire catching portion 2G3 of the first holding member 2G2, but the cut end of the upper thread T remains above the cloth c. Thereafter, if the needle N is raised, an upper loop is formed by passing the upper thread (10) of the threading hole Na formed at the lower end of the needle N. The upper thread loop is picked up by the tip of the shuttle K of the shuttle K, whereby the cut end (tip) Ta of the upper thread T is pulled down under the cloth c to be drooped, and the upper thread T is maintained by the line capture. The state inside the frame of the 2G3. Since the first holding member 2〇2 moves to the right in the second map, the line capturing unit 2〇3 is separated from the right side of the needle N by the lower movement path, and the line capturing 4203 is described. The upper line τ is sandwiched between the first missing portion 2〇4 and the second holding portion 206 of the second holding member 2〇5.

In this state, if the number of stitches set in advance is further dropped, the lower thread shown by the upper thread T 201104035 is knotted, and the cloth c placed on the needle plate p forms the number corresponding to the number of stitches. Sewing. Then, after the predetermined number of stitches has been dropped, the first holding member 202 is moved to the left in the 20th drawing, and the upper thread is sandwiched between the second clamping portion 204 and the second holding portion 2〇6. Ding liberated, and formed the seams in sequence under the sorrow. In addition, the cut end of the upper line τ. The wire catching unit 2〇3 is pulled out by the feeding of the cloth C with the sewing. (Prior Art Document) (Patent Document 1) Japanese Laid-Open Patent Publication No. 2004-187858 C. The present invention is to solve the problem. However, in the above-described upper thread holding device 201, the upper thread τ is clamped. When the end portion of the wire is sewn into the mesh to form a wire loop, the wire loop cannot be removed by the wire catching portion 203, and a problem such as cloth offset or disconnection, malfunction of the device, and the like may occur. Specifically, as shown in Fig. 21, first, the nip portion of the upper thread τ is sandwiched between the first holding portion 204 and the second holding portion 206 by the second needle. The front end portion 位于 is located on the upper pull path of the wire loop TL after the second stitch, for example, at the position of the passage path of the shuttle point Ka of the shuttle K, the front end portion TA enters the upper line of the second stitch The inside of the ring TL. On the same day, the length of the current end portion TA, that is, the length from the nip portion of the upper thread τ to the front end Ta is longer than the distance from the nip portion of the upper thread T to the needle drop point DP of the cloth c. As shown in Fig. 22, the distal end portion of the upper line τ enters the upper line % TL. In this state, when the upper thread T is pulled up by the thread take-up lever not shown in Fig. 201104035, the front end portion τα is not pulled out by the upper thread loop TL and is pulled up together with the upper thread loop TL. Then, the pull-up of the upper right line T is completed, and as shown in Fig. 23, the leading end portion TA of the line T passing through the line catching portion 203 is sewn into the seam S in the fabric to form a line passing through the line catching portion 203. Ring W. In the wire loop W, the first holding portion 2〇4 is separated from the second holding portion 206, and even if the clamped upper thread T is released, the wire catching unit 203 which is integrally formed in a frame shape cannot be removed. The cloth offset (sewing shape shift) or the disconnection, the device malfunction, and the like occur depending on the feeding of the cloth c accompanying the sewing. In order to solve the above-mentioned problems, the present applicant has first applied for an invention as described in Japanese Patent Application Laid-Open No. Hei. No. Hei. No. Hei. No. Hei. No. 2009-118906 (not disclosed). That is, it can be solved by using the first holding member 21A shown in Fig. 24 instead of the first holding member 202. The first holding member 210 includes a main body 212 having a substantially U-shaped catching portion 211 having an opening formed therein, an opening and closing body 213 that can open and close the opening of the capturing portion 211, and a catching portion 211. The opening member of the opening and closing body 213 is biased in such a manner that the opening is formed in a closed state. At this time, the line capturing unit 2〇3 is composed of the capturing unit 211 and the opening and closing unit 213. Further, the front end portions on the front side of the capturing portion 211 are formed so as to be in contact with the opening and closing body 213 only on one side of the far side (the left side in the drawing) away from the center of rotation of the closing body 213. The different lengths are configured such that the opening/closing body 213 does not abut against the other end portion of the capturing portion 211 and a gap is formed between one of the front end portions. When the first holding member 210 as described above is used, even in the case where the loop material of the 201104035 through-line catch 4203 is formed, the opening and closing body 213 is caused by the tension of the upper "spring T" generated by the conveyance cloth c. When the force of the biasing member 214 is resisted and the red force is applied, the wire loop * is detached from the wire catching portion 2G3. In the configuration of the first sandwiching member 210, there is a problem as shown below. When the opening and closing body 213 is rotated by the tension of the upper thread, and the upper thread 解放 is released by the line catching (4) 3, if the upper thread τ is applied to the tension of the upper thread τ, the upper thread is opened by the opening and closing body 213 and the second clamping portion. In the case of friction and jamming, there is a smashing of the upper thread. Therefore, in order to avoid this situation, in the upper Τ - - - - - - - - 定 定 定 定 定 定 张力 张力 张力 张力 张力 张力 张力 张力 张力 张力 张力 张力 张力In addition, the device that moves the opening and closing body 2 before the separation of the upper and lower movement paths NL of the needle Ν is added. However, the ith holding portion 2〇4 of the opening and closing body 213 is engaged by the second member 205 (19th) The second clamping portion of Fig.) is applied to the upper thread, so that the opening and closing body 213 is being When the state of the upper line τ is rotated, the second holding member 2〇5 that is biased toward the front by the biasing force is moved toward the first clamping member. At this time, the second holding portion 2 is moved. 〇6 is guided by the line capturing unit 2〇3, that is, the two side faces of the capturing unit, and moves forward. However, if it exceeds the capturing unit 2ΐι, as shown above, the front side is corrected, and the post is composed of the job materials. As shown in Fig. 25, the Nagasaki 6 system reaches the front end portion of the capturing portion 211 having a shorter length toward the front end portion of the capturing portion 211, for example, the movement of the missing portion is restricted as described above. When the abnormality is detected and the sewing machine is suddenly stopped, the sewing efficiency is lowered, and the components of the upper thread holding device 1 are damaged and the durability is lowered. The present invention has been made in view of the above circumstances. Provided is a sewing machine upper thread holding device which can easily and surely remove a thread which passes through a line above the wire catching portion, and which can improve sewing efficiency or durability. The mechanism for solving the problem is patented in order to solve the aforementioned problem. Scope The invention described above is a sewing machine upper thread holding device which is formed in a frame shape having an opening portion having an opening formed in the front portion, in which a thread is inserted into the frame and a thread is connected to the needle needle. a second central holding member that is disposed in a manner to be close to the separation and that is deviated from the first winding member; and the needle is inserted into the aforementioned Between the initial position and the gripping position of the upper thread, the driving mechanism for moving the front first holding member and the second holding member is in the second line. The end portion, after the formation of the pre-quantity of the seam, the wire end portion is liberated to the seam machine 35. The wire-protecting device is characterized in that: the above-mentioned components have: the opening and closing of the mouth and the mouth And a first biasing member that biases the first clamping portion by blocking the opening and closing, the 21st holding member having a relatively nip portion Close to the way of separation, and in the Second holding portion held between the holding portion; and Shu ^ nip portion of the compartment. In the first-line holding device of the second holding portion, the first holding portion is configured such that the first member and the second holding member are biased to each other. The opening and closing operation mechanism of the operation "the drive mechanism is configured to move the first holding member and the second holding member at the nip position from the initial position to the liberation position in the separating direction." When the first holding member and the second holding member move from the nip position to the liberation position, the first nip portion is operated such that the opening portion is opened after the movement is started. The invention described in the second aspect of the invention is the above-mentioned first continuation-body configuration and a protruding portion of the separated direction and a stopper that abuts against the protruding portion (71), wherein the first holding member and the second holding member are moved toward the solution by the cooling position (four). When the protruding portion (71) abuts against the supporting member, the first holding portion is rotated in a direction opposite to the separating direction, and the opening portion is opened. In the sewing machine upper thread holding device of the second item of the scope of the patent application, the projection material is held by the first movement, and the opening portion is The speed difference in the opposite direction of the separation direction of the (1) speed due to the rotation of the first lost portion is caused by the movement of the second clamping member with respect to the liberation position (4) The moving speed of the first refreshing portion in the direction of the separation is a distance of the rotation center of the first ith missing portion. The invention of the fourth aspect of the patent is disclosed in Japanese Patent Application No. 201104035, the third aspect of the sewing machine upper thread holding device, wherein the protrusion portion is adjustable from the first reading portion. In the invention of the invention, the sewing machine upper chain holding device of the first item of the first embodiment of the invention is provided with the first holding portion and the second holding portion. a direction in which the first clamping member can be moved (four) to cut the member; and the == member and the second clamping member are opposite to the front first clamping member and the second second member The first interlocking operation mechanism is configured to move the front end position and the second holding portion in proximity to the movement of the front position to the holding position by the driving and moving mechanism. The relative movement of the above-mentioned line end is held at the end of the line::: The above-mentioned first is exercised with the action of the above-mentioned misplaced position (four) 35! The nip portion 舆 the first nip=set separation movement, and the liberation of the relative movement operation of the sacred temple's knife to move the effect of the line end effect, and then move the first clamping member (10) The catching unit 2 prevents the second gripping portion from reaching the emergency stop or the on-line accompanying garbage #. Therefore, the tightening durability of the sewing machine is suppressed. , the damage of the component parts of d can make the sewing efficiency or bit. In addition, due to the first! The central holding member and the second cool holding member are moved to the liberation, 10 201104035 set, so even if the formation is passed! In the case of the wire loop of the holding member, the feeding of the cloth and the movement of the upper thread clamping mechanism are also performed: the direction of the gripping portion (line catching portion) is tightened to automatically cause the loop to be detached from the thread portion. Therefore, the wire loop passing through the upper line of the wire catching portion can be easily and flexibly removed. According to the invention of the second aspect of the invention, since the first holding portion can be opened and closed, the device can be miniaturized and manufactured at low cost without requiring special operation. According to the invention of the third aspect of the invention, in the door direction, the direction of separation of the rotational speed of the first holding portion is opposite to that of the first clamping member. In the case where the movement of the liberation position is equal to or greater than the movement speed of the separation direction in the separation direction, the distance is set to be a predetermined distance from the axis center of the body, so that the first clamp of the ', upper, and spring contact can be prevented. The portion of the holding portion is separated by the vertical movement path of the needle when the opening and closing body is rotated. That is, the first clamping material that is pulled toward the separation (four) will be put on the line.

μ is liberated online. Therefore, it is possible to prevent the upper thread from being creased by the quilt A at the same time. The removal of the holding portion prevents the opening and closing plate from being damaged or by the invention described in the fourth paragraph of the Shenyue Special Range, and the speed at which the opening and closing body is opened is formed by the rotation of the closing body. Since the material is adjusted, it is possible to freely change the invention described in claim 5, by moving the member and the second member _, even if the member is formed by the 201104035 (line capture) In the case of the wire loop of the portion, "the __ opens the opening and closing body in the direction of tension, and the wire loop of the upper thread can be easily and surely removed by the first holding portion. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a full side view showing a part of the outline of the seam rush machine. Figure 2 is a front view of the shuttle mechanism viewed from the X-axis direction. Fig. 3 is a plan view of the upper guide bow I plate viewed from above. Fig. 4 is a perspective view showing the main configuration of the upper wire holding device. ^ (4) An exploded perspective view showing the periphery of the upper wire holding mechanism in the main configuration of the upper wire holding device. Fig. 6 is a view for explaining the operation of the upper line holding material when the second grip member and the second sagittal member are at the initial position when viewed from the right side. The /7 figure is an operation explanatory diagram in which the first holding member and the second holding member are positioned at the initial position when viewed from below. Fig. 8 is an operation explanatory view of the upper line of the prefecture when the first holding member and the second holding member are located at the nip position as viewed from the right side. Fig. 9 is a view for explaining the operation of the upper wire holding device when the second clamping member and the second holding member are positioned at the position where they are viewed from below. The first picture of the fish is viewed from the right side in front of the liberation position, and the action diagram of the upper line holding material is placed when the relative position adjustment member is slid. Fig. 11 is a view from the lower side in the liberation position. When the connecting body and the second abutting member are slid, the upper line _ eye _ position adjustment is shown in the right side in the liberation L (four). Part and support 12 201104035 The action diagram of the upper line holding device when the front end of the member abuts. The action explanatory diagram in which the upper line is kept in contact with the supporting one in front of the liberation position is viewed from below. "The picture is viewed from the right side of the second clamping member and the a-clamping position is set to the upper line." The liberation is the first component and the second clamping member is located above the line. Fig. I6 is a plan view showing the holding mechanism of the opening and closing plate viewed from above. Fig. 17 is a block diagram showing the control structure of the slitting machine. Fig. 18 shows the other of the opening and closing plates. Fig. 19 is an exploded perspective view showing a conventional upper wire holding device. Fig. 20 is a view showing a state in which a wire is held up in a conventional upper wire holding device. Fig. 21 is a view showing a wire end of a conventional upper wire holding device. The state diagram of the inside into the upper wire loop. Fig. 2 shows the state diagram of pulling up the wire together with the upper wire loop in Fig. 21. Fig. 23 shows the formation through the wire after the formation of Fig. 22 Fig. 24 is an exploded perspective view showing another example of the conventional first holding member. Fig. 25 is a plan view showing a state in which the second holding portion reaches the front end portion of the capturing portion. 13 201104035 EMBODIMENT OF THE INVENTION The present invention will be described in detail with reference to the drawings, and the preferred embodiment of the sewing machine upper thread holding device (hereinafter simply referred to as the upper thread holding device) of the present invention will be described in detail. As shown in Fig. 1, the sewing machine main body 100 to which the upper thread holding device 10 is applied has a platform portion 101 located at a lower portion thereof, and a vertical hole portion 10 2 which is provided upward from one end portion of the platform portion 101, and The upper portion of the hole portion 10 2 extends along the arm portion 101. The front end portion of the sewing machine body 1 is formed into a substantially cylindrical shape and a width in the axial direction to be described later. The so-called cylinder bed sewing machine is set to be narrower than the other parts. In the following description, the direction in which the needle 104 is moved up and down (vertical direction) is set to the z-axis direction, and is orthogonal thereto. The direction of the longitudinal direction of the platform portion l〇i and the arm portion 103, that is, the extension direction of the main shaft (not shown) is the Y-axis direction, and is orthogonal to both the Z-axis direction and the γ-axis direction. , ie The horizontal direction of the main axis is set to the x-axis direction. When the sewing machine body 100 is placed on the horizontal surface, the + side of the Z-axis direction is the upper side and the lower side is the lower side, and the X side of the X-axis direction is the right side. The left side of the γ-axis direction and the front side of the γ-axis direction are described later. The slit machine body 100 is provided with a needle that moves up and down in the front machine (four) 5 of the f part 1 () 3; In the part where the needle is supplied to the needle, the upper thread supply source (not shown in the upper line supply source and the slit (4) 4) is put on the line, and the line is lifted with the weight of the pre- 14 201104035. The wire tension device 106; between the wire tension device 1〇6 and the 〇 pin 1〇4, the thread take-up lever 1 之上 is pulled up by the pre-twisting phase in the vertical movement of the needle 1〇4 7; a needle plate 1〇8 provided with a pinhole 108a (refer to the figure) through which the distal end portion of the needle 104 is inserted is provided in the upper portion of the platform portion 101; and is provided in the platform portion 1〇1 and The upper thread loop of the needle board 1 〇 8 is taken up, and the lower thread (not shown) is inserted into the shuttle mechanism 120 of the upper thread line; at the needle board 1 〇 8 and the shuttle Between the head mechanisms 120, when the first stitch of the slit #104 is raised, the upper thread holding device 'maintaining the end portion of the line of the upper thread T is provided on the platform portion 101 below the needle plate 108, and the knife is placed after the sewing. A thread cutting device (not shown) for cutting the upper and lower threads of the cloth and the needle 104 connected to the shuttle mechanism 120, and an operation control mechanism 8 (see Fig. 17) for performing the above-described respective configurations. In the 104 series, a threading hole 104b is formed in the vicinity of the front end (lower end) (see Fig. 2, the threading hole 104b is inserted with the upper thread T. Further, the needle bar 104a holding the needle 1〇4 1 at the lower end portion is not shown. The crank mechanism is connected to the sewing machine main shaft (not shown), and the rotational driving force from the sewing machine motor 105 is converted into a vertical up and down driving force, and is moved back and forth at a predetermined cycle. In the sewing machine motor 105 And an encoder 1 〇 9 for detecting the amount of rotation angle (refer to Fig. 17), and when the needle 10 4 is at the top dead center position, it is 0'. Will the current output shaft of the sewing machine motor 105 be located at 〇~360 The angular position is output to the operation control unit 8A. The thread take-up lever 107 having the upper thread insertion hole (not shown) through which the upper thread T is inserted is moved up and down in conjunction with the spindle of the sewing machine. The thread take-up lever 107 is located above. The timing of the dead point position is set to be slightly delayed from the time of the top dead center position of the stitch 1 〇 4 at the time of the 2011 0 520. The thread take-up lever 1 〇 7 is moved up and down in the state of the upper line τ. Above (four) The row is inserted into the upper thread of the needle 1G4. The shuttle mechanism 120 shown in Fig. 2 is configured to have a semi-rotation swing and capture the upper thread by the tip 121 protruding in the circumferential direction of the rotation. a middle shuttle 122 of the wire loop; a large shuttle 123 that supports the middle shuttle 122 in a rotatable manner; an upper guide 124 provided at an upper portion of the large shuttle 123: and extends parallel to the longitudinal direction of the platform portion 101 The shuttle head 125. The middle shuttle 122 is provided with a rail-like protruding structure portion 126 formed along the outer circumference thereof so as to be semi-rotating in a reverse manner, and is slidably coupled to the support groove 123a of the large shuttle head I23 on both sides thereof. The turning point 121 is formed at an end of the rail-like protruding structure portion 126, and is configured to pass the upper wire guiding plate by a half rotation operation of one of the middle shuttles 122. The guide hole 124a of the 124 penetrates the positive side of the threading hole 104b of the needle 104, whereby the upper thread loop can be picked up. Therefore, the tip end portion 121 is formed with the front end portion formed to be biased toward the center of rotation of the middle shuttle 122. The shape of one of the lines L, and the tip of the tip 121 and the protrusion The forming portion 126 is a vertical movement path NL of the needle 104 (parallel to the Z-axis direction, and a path connecting the distal end position of the needle 1〇4 in the top dead center to the distal end position of the needle 104 in the bottom dead center) It is disposed on the R side of the other direction along the rotation center line. Further, the shuttle shaft 125 is located on the R side with respect to the middle shuttle 122, although it is not directly coupled to the middle shuttle 22, but with the middle shuttle The head 122 is provided with a driving force for reciprocating semi-rotation together, and transmits a driving force for reciprocating semi-rotation to the middle shuttle 122. The shuttle shaft 125 is arranged in parallel with the Y-axis direction 16 201104035, and the middle shuttle m is located at γ. The position of the axial direction, and the direction of the driving force for making the middle shuttle m half-rotate by this direction. Further, the shuttle shaft 125 is formed to be converted into a rotational driving force by the driving force of the slit_motor 1 () 5, and the reciprocating motion toward the upper and lower directions of the needle ι 4 and the middle shuttle 122 are transmitted. The round-trip half-rotation motion is synchronized with a predetermined phase difference. The upper wire guide plate 124 is for preventing the plate-like member that is in contact with or caught in the lathe faces 127, 128 of the centering bobbin 122, and is provided with a guide hole 124a having a shape as shown in Fig. 3 when viewed from above. A portion (10) for widening the upper thread loop caught by the shuttle tip 121 of the middle shuttle 2 is provided in the portion of the guide bow hole 2_γ axis direction and the X-axis direction side. The upper thread loop of the shuttle tip (2) (four) that is rotated is largely separated by the line τρ on the side of the needle 1〇4 and the line TB on the cloth side by the boundary of the branching portion 124b' with the shuttle tip 121'. The contact or entanglement of the two lathe faces 127, 128 of the middle shuttle head m. <Configuration for holding the farm on the upper line> The upper thread holding device 10 is a seam for starting the sewing as shown in Fig. i, that is, in order to prevent the end portion of the upper thread T of the start seam f from falling off from the cloth, When the sewing is started, it is inserted over the needle 104, the line end of the line T is below the needle plate 1G8, and is caught and clamped at a position separated by the lower movement path of the needle 1G4, and the needle is dropped at a predetermined number of needles. After that, the line end of the clamped upper thread T is liberated. The upper wire holding device 1 is provided with an upper wire clamping of the i-th holding member 21 and the second holding member 31 (see 17 201104035 ′′) for gripping the wire end portion of the upper wire T. a mechanism (hereinafter simply referred to as a clamping mechanism) 2〇, and a driving mechanism 4〇β for driving the clamping mechanism 20, wherein the driving mechanism 4 is configured to position the first clamping member 21 and the second clamping member 31 at the needle 104 The state of the upper and lower moving roads is set to the initial position 'can be in the first! The holding member 21 and the second holding member are similarly moved in the separating direction in which the initial position is separated toward the rear (the x-axis direction side), and are sequentially moved toward the holding position and the releasing position. Hereinafter, the upper wire holding device 1 of the present embodiment will be described in detail. <Blowing mechanism of the upper wire holding device> As shown in Figs. 4 and 5, the clamping mechanism 2 has the first holding member 2, the second holding member 3, and the supporting member S1. The operating mechanism 6〇 and the opening and closing operation mechanism 70. The first holding member 21 is a long-length plate-like member that is disposed to extend in the γ-axis direction, and a line catching portion 22 is provided at a front end portion in the Y-axis direction + side position. The line catching portion 22 is a catching portion 21a having a substantially U-shaped opening at the tip end, and the opening portion of the capturing portion 21a is opened and closed as a first holding portion. The opening and closing plate 23 is constructed. Then, the opening and closing plate 23 closes the opening of the catching portion 21a, and the wire catching portion 22 is formed in a frame shape so as to surround the slit 1〇4 at the time of lowering. Both sides of the capturing portion 21a are formed such that one of the X-axis directions - the side is slightly longer than the other in the γ-axis direction + side. Further, the opening and closing plate 23 constituting the wire catching portion 22 is formed in a substantially U shape in which an opening is formed on the X-axis direction side. The rod-shaped portion on the γ-axis direction + side of the opening and closing plate 23 serves as a closing portion 23a that closes the opening of the capturing portion 21a. More specifically, the portion of the side surface of the occluding portion 23ai Y-axis direction + side facing the internal space of the capturing portion 21a is a portion that closes the opening of the capturing portion 2u, and is formed in this portion. The first lost portion 23b at the end of the line of the upper line τ is held. Therefore, it is preferable to provide an R-shaped chamfer so as to prevent the upper end edge and the lower end edge of the closing portion, the front end, or the upper end edge and the lower end edge of the side opposite to the catching portion 2U from being cut. The ampoule portion 21b extends toward the X-axis direction + side and is provided on the side surface on the X-axis direction + side of the second-hand lost member 21, and serves as a base end portion of the capturing portion. A bent portion of the opening and closing plate 23^γ=direction-side is fixed to the lower end of the support member 24 formed of the segment screw, and the mounting portion 21b is detachably opened in the middle portion thereof. The first inflammatory member 21 supports the opening and closing plate 23 in a rotatable manner. At this time, the opening and closing plate 23 is disposed such that the rod-shaped portion 23c on the γ-axis direction side is disposed on the lower side of the capturing portion 2U of the second clamping member 21. The bracket portion 21c is provided on the side surface on the X-axis direction side of the second clamp member 21 so as to extend toward the X-axis direction_ side, and is located slightly rearward in the middle portion of the γ-axis direction. An end of the biasing spring 25 as the i-th dip member is attached to the front end portion of the bracket portion 21C, and the biasing spring 25 is a rod that mounts the other end on the Y-axis direction side of the opening and closing plate 23. The front end portion of the portion is arranged to extend substantially in the Y-axis direction. The side wall of the closing plate 23 of the opening and closing plate 23 on the Y-axis direction side is abutted against the opening end of the catching portion by the force (stretching force). Thereby, the line capturing unit 22 is kept in the closed state in the normal state. At this time, the closing portion 23a of the plate 23 is such that its distal end portion abuts only one of the X-axis direction_ sides of the opening ends of the capturing portion 2ia. Thereby, the closing portion ^ 19 201104035 abuts only the other open end of the capturing portion 2ia, so that no gap is formed between the opening ends of the front end portion, that is, the upper line T is not passed. In the bracket portion 21c of the first holding member 21, the bracket portion 21c of the first holding member 21 is provided with a round bar-shaped fastening machine extending downward in the first direction; == Then, the movement force in the front-rear direction by the interlocking action mechanism is transmitted through the matching pin. The rear end of the first holding member 21 located at the station a is formed by a through-hole having a planar rectangular shape in which the rear direction is elongated. This == is arranged with an interlocking action mechanism 6Q•4(4) (2nd), and an action field in which the (4) expansion and contraction is formed. The end of the stretched magazine end is connected to the front end of the through hole 21d. The second holding member 31 is divided into two, the front side member 3 2 and the rear side member, which are joined by the connecting body 34, thereby forming a substantially long shape of the body. In the 31st aspect, the front side member 32 is disposed on the + side, and the direction is extended, and the first holding member 4 is overlapped on the upper side of the first holding member. The second holding portion 仏 is formed at the distal end portion, and the second holding portion 32a is provided inside the line capturing portion 22 in the closed state, and is guided by the capturing portion m: along the capturing portion 21a The direction of the opening σ, that is, the γ-axis direction, is now relatively close to the separated clamping surface 32b for the clamping portion, and when the abutting against the jaw is passed, the lower portion of the first clamping portion is present, and The end surface of the opening and closing plate 23 is a curved portion 32c that protrudes forward. Therefore, the second holding member S1 and the second holding member (10) are relatively close to each other. And the separating operation, the line end portion of the upper line T inserted into the line catching portion 22 of the first lost member 21 from the upper side is supported by the first holding portion 23b and the second holding portion 32a. ) Clamp and liberate. In addition, the upper thread T to be clamped is bent forward by the curved portion 32c extending forward from the lower end portion of the grip surface 32b, and the upper thread τ is directed downward from the front. As a result, the end portion of the upper thread hangs down in a state of being located further forward, so that the middle shuttle 122 of the shuttle mechanism 120 located below it is staggered further forward 'preventing contact or roll for the middle shuttle 122 In. Further, the front side member 32 of the second holding member 31 is provided so as to be movable relative to the connecting body 34; In other words, the second holding portion is swingable in the x-axis direction within a range from the gap between the catches 421a, and as a result, the first holding portion p23b is in contact with the second holding portion 32& directly or through the upper thread. At this time, the holding surface of the abutting surface of the second holding portion 现 will now follow the abutting surface of the first holding portion 23b. Thereby, the upper thread τ can be surely held without depending on the clamping position in the axial direction of the upper thread or the thickness of the upper thread τ. ♦ In the rear side member 33 of the second holding member 31, a through hole 3 is formed along the front-rear direction. The through hole 33a is overlapped with the through hole 21d of the first holding member 21, and the stretched elastics 61' in which the interlocking operation mechanism 6g is disposed inside are formed in the field of the stretching operation. The rear end portion of the through hole 33a is connected. The other end of the tension spring 61 is stretched. Therefore, the second holding member is formed in a state of being coupled to the first holding member 21 through the tensile magazine 61, and is in the first place! The first holding portion 23b of the holding member 21 and the second holding portion of the second holding member 31 are given a biasing force in a direction in which they are in contact with each other. Further, the rear side member % of the second holding member 3 j is provided in the γ-axis direction.

[The bracket portion 33t of the intermediate portion of the SJ 21 201104035 extending toward the X-axis direction + side is fixedly provided with a round bar-shaped engaging pin 35 extending downwardly at the front end portion thereof. As will be described later, the second holding member 31 receives a moving force in the front-rear direction by the interlocking operation mechanism 60 through the engaging pin 35. In addition, when the first holding portion 2 3 b is in contact with the second holding portion 3 2 a, the engaging pin 35 is in the Y-axis direction with respect to the engaging pin 26 of the first holding member 21 and the Y-axis direction. The position setting is performed in such a manner that they are arranged at substantially the same position. The support member 51 is supported by the γ-axis direction in which the second clamping portion 23b and the second clamping portion 32a 2 are close to each other, and the first clamping member 21 and the second clamping member 31 are moved. Plate-shaped member. The support member is fixed to the upper portion of the platform portion 101 and is behind the needle plate 108. On the upper surface of the support member 51, a guide groove 52 is provided along the z-axis direction at an intermediate position in the z-axis direction. Clamping mechanism 2 The holding member 31 is placed in the state in which the longitudinal direction is aligned and overlapped, and the first clamping member 21 and the second clamping member 1 are not guided by the guiding groove 52. The way of falling off is covered by the pressure plate 53. The grip member 21 and the second grip member _ are guided by the guide clasp and are clamped in the z-axis direction. However, since the first holding member 21 and the second == tension spring 赋 are biased, the (fourth) member 21 is inserted into the upper side through hole 51a and the upper side in the axial direction. The snap pin 26 is inserted in the x-axis direction + 22 201104035 [J; the other; the clam tooth hole 51b is inserted into the fastening pin 35 of the second holding member 31. The front end portions of the through-holes 5 and 10 (10) fastening pins 26 and 35 are inserted and protruded from the lower end of the support member 51, and the relative positions of the coupling members 62 are individually engaged. The through holes 51a and 51b are caused by the movement of the fourth position and the second position of the second holding member 31 to the liberation position, and the relative movement of the first holding member and the second holding member (four). The length in the UY drawing direction is set so that the front end portion and the rear end portion do not contact the fastening pins 26 and 35. That is, the through holes 51a and 51b are engaged with the gamma and the clearance holes. Wherein, in the present embodiment, the elastic force imparting force obtained by the biasing spring 25 is greater than the tension of the stitching or the stretched elastic force during the formation of the usual stitching. (4) The sum of the elastic force of the magazine 61 and the tension of the upper thread τ when the loop W is formed is set to be smaller. <Connected operation mechanism of the upper wire holding device> Next, the interlocking operation mechanism 60 and the opening and closing mechanism 7 () will be described. The interlocking operation mechanism 60 is configured such that the holding member and the second holding member 31 are moved or moved in accordance with the position of the holding member 51 of the holding member 21 and the second holding member 31. The mechanism 60 has a tension spring 61, a relative position adjustment connection, a second abutment member, and a second abutment member 64. The tension spring 61 is interposed between the first and the second. Between the holders 1 and 1 , the first lost portion 23b and the second holding portion 32 are in close proximity to each other, and the second missing member 21 and the second lost member 31 are often combined with each other. 1. In addition, by stretching (4) the biasing force between the missing members 31 to the biasing force between the mouth ends of the biasing magazine 23 201104035, the opening and closing plate 2 3 and the capturing portion 2 obtained by 25 are provided. The opening of the 丨& is set to a very small load. The relative position adjustment coupling 62 can change the clamping portion of the second clamping portion 四 (4) in close proximity to the first position member 21 and The second clamping members 31 are respectively engaged with each other, and are input with a force appearing by the rotating mechanism. In the (four) position adjustment = body = is along the long side thereof The first clamping member buckle M62a, the second fastening member 31's turning engagement portion 62b, and the rotation engaging portion 62c of the driving mechanism 40 located between the two are disposed side by side. The rotation engagement portion 62a of the first holding member 21 is a long hole-shaped through hole in the (10) direction of the relative position adjustment coupling body 62, and the buckle 26 is inserted. Further, the slewing engagement portion with the (fourth) member 31 is embossed with a circular shape, and the buckle pin 35 is inserted through the perforation. Further, a long hole-shaped through hole in the longitudinal direction of the connecting body 62 is adjusted along the relative position of the driving engagement portion 6 of the driving mechanism, and the engaging projection 43a to be described later is inserted. As shown in Figures 7 and 9, 'No! The abutting structure (10) is when the second holding member 31 and the second holding member 31 are at the initial position, and the second holding portion 432asx is separated from the second holding member 432asx' when moving from the initial pure position to the clamping position. Then, the direction in which the first holding portion 23b and the second holding portion 32a approach each other is moved, and the swing of the relative position adjustment coupling body 62 is operated so as to come into contact with the gripping position. In order to achieve the above operation, the first abutting member 63 is paired with the rotationally engaging portion 62c of the position adjustment coupling body 62' at the driving mechanism 4'' and the second central portion (four) member 3 (4) in the initial position. (4) (5) By the way of the front _ 24 201104035 for configuration. With this arrangement, in order to position the first holding member 21 and the second holding member 31 at the initial position and to apply the moving force toward the front to the relative position adjustment link 62 by the drive mechanism 4, the relative position is given. The adjustment coupling body 62 is swayed by the contact with the second abutment member 63 as a fulcrum against the tension of the tension spring 61. At this time, the swivel engagement portion 62b of the second holding member 31 moves rearward as compared with the abutment, and the swivel engagement portion 62a of the first holding member 21 moves forward. With this movement, the first holding portion 23b moves to the side, and the second holding portion 32a moves rearward. Therefore, the two portions are separated from each other (see Fig. 7). When the first holding member 21 and the second holding member 31 are moved toward the nip position by the initial seven positions, the abutment state of the wood pair position adjusting connecting body 62 by the second abutting member 63 is slow. Since the slow release is performed, the love position adjusting link 62 is rotated in a clockwise direction by the tension of the tension spring (four). As the relative position adjustment is rotated, the first holding portion 23b moves rearward, and the second holding portion 32a moves forward, and finally comes into contact with each other (see Fig. 9). Therefore, the gripping system which is lined up by the gripping portion and the temple portion is further rearward than the more positive initial b in the initial position and in the second central portion than the initial position. 32a is more than the other location to carry out. As shown in Fig. 11, the second abutting member 64 is operatively transcribed and moved in such a manner as to be in a direction in which the Hn secret portion 23b is held to operate the relative position adjustment, in order to achieve the above operation, the second abutment Member 64 is in the first! When the clamping structure 201104035 member 21 and the second holding member 31 are moved from the nip position to the liberation position, the area through which the relative position adjustment coupling body 62 passes is slid by the directional direction side and the relative position adjustment coupling body 62. The way to configure. With this arrangement, the sliding portion provided at the end portion on the X-axis direction side of the connecting body 62 in the relative position toward the liberation position in the state substantially along the X-axis direction is the second resist member 64. Sliding (refer to the first off). The relative position adjusting material (10)=the thin system has a taper that gradually extends toward the front in the X-axis direction_the side. Therefore, after the start of the sliding, the relative position adjustment is coupled to the rear and the rear side. Therefore, the relative position adjusting connecting body 62 is finely reversed. And the second detent member 31 is connected to the slewing engagement portion 62a of the slewing fastener losing member 21 of the νΓ member 31, which is larger (four) arranging the body 4: the interlocking action mechanism 60' with the first gripping position by the driving position, "(4) position toward the liberation (four) center H movement of the second holding member 31, the first holding portion holding member is separated and the first holding is lost The member 21 and the second portion are provided with a relative movement operation for releasing the line end portion of the upper thread. The holding member tilts the position of the member 31 with respect to the support member 51, and inserts the opening and closing plate 23 so that the opening of the coffee is opened. Actor 26 201104035 The mechanism 7G has a protrusion (4) 7丨 in the rod-shaped portion 23 of the opening and closing plate 23 in the direction of the Y-axis direction and the side protrusion (4); and a stopper that abuts on the protrusion portion ^ The front end face 72 of the support member 51. The protruding portion 71 is configured to abut against the front end of the supporting member 当 when the first holding member 21 and the second holding member 2 are moved from the nip position to the liberation position. When the projections 71 are in contact with the distal end surface of the support member 51 (see Fig. 13), the opening and closing plate 23 is rotated forward against the biasing force of the biasing elastic force, and the opening of the capturing portion 21a is opened. Then, when the i-th holding member 21 and the 21st holding member 31 reach the liberation position, the opening of the job portion is completely opened (see Fig. 15). Further, the protrusion 71 is the first holding member 21 and When the second holding member 31 is moved to the liberation position, the sliding portion 62d of the relative position adjustment connecting body and the second abutting member 64 are slidably contacted, that is, they are in contact with the front end surface 72 of the support member 51. The method is formed to have a predetermined degree of orientation toward the γ-axis direction side. The height of the protrusion portion 71 toward the Υ-axis direction side is used to determine the timing. The timing at which the 卩 71 abuts against the front end surface 72 of the support member 51, That is, the timing at which the opening of the opening 4 shuttle 23 is opened is opened. Therefore, by forming the projection 7 to the above-described height, the relative position adjustment coupling body 62 swings in the counterclockwise direction to the first clamp member 31 to the first clamp. The holding member 21 starts to move toward the γ-axis direction side The opening and closing plate 23 is operated so that the opening of the catching portion 21a is opened. When the opening and closing plate 23 is rotated and the opening of the catching portion 21a is opened, the first holding portion is caused by the opening and closing plate 23 being rotated. The speed component in the Y-axis direction + side of the rotational speed of 23b is a mode in which the first moxiating portion 23b moves toward the γ-axis direction side by the movement of the liberation position of the first sandwiching member 27 201104035. 'The front end portion of the protruding portion 71 is located at a predetermined distance from the center of the rotation of the closing portion 23. Further, the figure 16 is not 'when the second clamping member 21 and the second clamping structure are When the position of the woman moves toward the liberation position, the center line A of the first holding member 21 and the second holding member 31 in the axial direction and the intersection of the i-th clamping portion of the opening and closing plate 23 are in the direction of the + axis + The side movement or the full* movement mode is formed. Among them, the Wth figure only shows the trajectory of opening and closing from the lost position to the liberation position for easy understanding, and the intersection of the center line A and the i-th clamping part B is displayed. An example of not moving. <Drive of the upper holding device Next, the drive mechanism 40 will be described. The vertical drive mechanism 40 is configured such that at least the frame-shaped line catching portion 22 of the core holding portion and the first holding portion 32a' of the holding mechanism is moved before the sewing start. The upper and lower movement paths of the needles 104 are seen at the initial position, and after the sewing is performed, that is, when the needle 1〇4 of the first needle is pulled out by the cloth, that is, the vertical movement path NL of the needle is changed to the initial position. The rear holding position '= catching (four) 2_ opening moves backward, and when the needle drop is set (for example, the second to third stitches), the vertical movement path NL of the needle 1 〇 4 is moved to become The liberation position at the rear of the gripping position moves to three positions. Therefore, as shown in FIGS. 4 and 7, the drive mechanism 4 is configured to reciprocate the i-th dissipating member 21 and the second inflaming member 31 supported by the operating mechanism 60 in the Y-axis direction. The γ-axis moving mechanism 41 and the position detecting mechanism 44 for detecting the position of the illuminating member 21 and the second smear member 3 are placed at any position of the initial position and the liberation position. As shown in Figs. 4 and 5, the boring machine is provided with a wheel drive motor 42 and a link connecting the output shaft of the drive motor 42 to the relative position adjustment link 62 of the link mechanism 6A. The mechanism 43 operates, in which the drive motor 42 is a stepping motor, and the operation control of the motion controller controls the amount of rotation at an arbitrary rotation angle for the positive and negative directions. On the other hand, the coupling mechanism 43 is connected to the output shaft of the rotary motor 42 at the end of the connection member, and the engagement projection 43a provided at the other position is inserted into the rotation of the relative position adjustment coupling (4). The part 62c is connected. With these configurations, when the drive motor 42 is driven, that is, the engagement protrusion 43a is transmitted, the relative position adjustment coupling body q of the interlocking operation mechanism 6 is moved in the Y-axis direction. As shown in Figs. 6, 8, and 14, the position detecting mechanism 44 has a light-emitting element and a light-receiving element, and detects whether or not there is a shield between the components! And the second state sensors 45 and 46; and the shielding mechanism 47 provided in the connecting mechanism 43' of the γ-axis moving mechanism 41 having the first and second shielding regions 47a and 47b. Here, in the fourth drawing, the position detecting means 44 is omitted. The first and second state sensors 45, 46 are arranged in line along the moving line of the shielding plate 47, and the second state sensor 45 is disposed on the rear side. Thereby, each of the state sensors 45 and 46 is in a state of being arranged substantially along the Y-axis direction. The light-receiving elements of the state sensors 45 and 46 have the state of the shield set to the on state, the state of the non-shield object to the OFF state, and the signal for recognizing the state 29 201104035 to the action control mechanism 8 Hey. On the other hand, the shielding plate 47 is fixedly supported by the coupling mechanism 43 so that both of the first and second state sensors 45 and 46 pass between the light-emitting elements and the light-receiving elements. Next, the first shielding region 47a is located in the i-th state sensor 45 and the second state sensor when the first holding member 21 and the second holding member 31 are at the initial positions as shown in the first figure. If it is located at the nip position, it is located at the position where the first state sensor 45 is shielded as shown in Fig. 8. If it is at the liberation position, it is still in the first state of shielding as shown in Fig. 14. The position of the sensor 45 is set in the γ-axis direction position and the γ-axis direction length. In addition, the second shielding area 47b is as shown in the sixth and eighth figures! When the clamping member 21 and the second clamping member 31 are located at the initial position or the clamping position, in any case, they are located further in front of the second state sensor 46, which is shielded when it is in the liberation position as shown in FIG. The position of the second state sensor 46 is set in the Y-axis direction. Therefore, in the operation control unit 80, the first holding member 21 and the second holding member 31 can be positioned at the initial positions in accordance with the OFF state of both the first and second state sensors 45 and 46. When the first state sensor 45 is in the ON state and the second state sensor 46 is in the OFF state, the nip position is confirmed, and it can be confirmed that both the first and second state sensors 45 and 46 are in the ON state. In a liberated position. Next, the operation control unit 80 performs the operation control of the γ-axis moving mechanism 41 based on the detection result of the confirmed position detecting means 44. <Operation Control Mechanism> 30 201104035 Next, the operation control unit 80 will be described. Fig. 17 is a block diagram showing the control structure of the sewing machine body 100. As shown in the figure, the operation control unit 80 is composed of a CPU that performs various kinds of arithmetic processing, a ROM that stores and stores various processing programs such as control and determination, and a RAM that is used as a working memory. Next, the operation control unit 80 is connected to the system bus bar, the drive circuit, and the like, and is connected to the sewing machine motor 105, the encoder 109, the drive motor 42, and a tangent motor 8 that drives a thread cutting mechanism (not shown). The position detecting mechanism 4 The first state sensor 45 of the fourth state, the second state sensor 46, and the SS (start-stop) switch 81 of the sewing machine body 100. The motion control mechanism 80 can recognize the rotation angle of the sewing machine motor 105 based on the pulse signal input from the encoder 109 provided on the output shaft of the sewing machine motor 105. Further, the operation control unit 80 can confirm the positions of the first holding member 21 and the second holding member 31 based on the detection signals input from the first and second state sensors 45 and 46 of the position detecting unit 44. . Further, when the sewing control unit 80 receives the sewing start signal from the SS switch 81, the operation control unit 80 appropriately controls the driving of the driving mechanism 40 in accordance with the rotation angle of the confirmed and recognized sewing machine motor 105 or the detection result from the position detecting mechanism 44. The drive of the motor 42. <Operation of the upper thread holding device> Next, the operation of the upper thread holding device 10 will be described with reference to Figs. First, when the main power source (not shown) of the sewing machine main body 100 is turned on, the sewing start signal from the SS switch 81 is input to the operation control mechanisms 80, 31 201104035, and the position detecting mechanism 44 detects the initial position. The detection is determined by whether or not the first and second state sensors 45 and 46 are in the 0FF state. "When the first holding member 21 and the second holding member 31 are not at the initial position, the operation is controlled. Mechanism 80 performs a movement to the initial position. In the initial position 'the first grip portion 23b of the first holding member 21 is located in front of the needle upper and lower movement path NL, and the second holding portion 32a of the second holding member 31 is located further behind the straight line (first 6, the state of the figure 7). Here, the 'straight side Μ is the rear side edge portion of the lower end portion of the pinhole 108a (the Y-axis direction-side end portion of the diameter of the circular pinhole hole 8a viewed from the lower side in the γ-axis direction) The position is determined by a line that is connected to the upper end portion of one of the lathe surfaces 128 on the rear side of the middle bobbin 122 that is disposed in close proximity to the rear side of the vertical movement path NL of the needle 104. By positioning the front end portion of the second holding portion 32a rearward than the straight line, the upper thread loop of the second needle is caught by the shuttle tip 121 of the middle shuttle 122 and is expanded by the branching portion 12. At this time, the front end portion of the second holding portion 32a is prevented from coming into contact with the upper thread 1 to cause an obstacle, and the upper thread τ can be effectively prevented from contacting the lathe surface 128. Next, when the sewing machine motor 105 starts driving, the needle 1〇4 is inserted into the pinhole l〇8a of the needle plate 108, and the upper thread τ passes through the first! The nip portion is now between the second holding portion 32a. Further, underneath, the upper thread loop of the side of the needle 1 () 4 is caught by the tip 121 of the shuttle mechanism 12G. Then, the upper thread loop is widened by the rotation of the middle bobbin 122 and the upper thread guide 124. However, as described above, the front end of the second grip portion 32a is located at the rear of the straight (10), thereby preventing The upper wire T contacts the lathe surface 128. Next, if the output from the encoder 1〇9 of the sewing machine 105 is indicated to be 32 201104035, the pick-up motor 107 has reached the top dead center, and the drive motor 42 is configured to operate the control mechanism to control the drive (4). When the stomach 42 is driven, the first holding member 21 and the second holding member 31 are moved by the initial position member 21 and the second position, and the position of the movement mechanism is interlocked. Therefore, the first holding portion 23b moves rearward. The 夹持2 holding portion 32a moves forward. The reason why H is held by the first pinch gripping portion after the thread take-up lever lG7 reaches the top dead center is because the pick-up rod H)7 is over. The pick-up lever pulls up the upper thread, so the upper song located below the pinhole U) 8a is in the shortest state, that is, if the upper thread T is clamped, the portion to be clamped can be The length of the upper line T is the shortest. Then, if the drive motor Μ of the predetermined rotation angle component is stopped, the drive is stopped (4). The phantom member and the second continuation member reach the cool position (the state of Figs. 8 and 9). Thereby, the second clamping portion 23b is brought into contact with the clamping surface 32b of the second holding portion 32a, and the end portion of the upper thread τ inserted between the two is lost. Next, in the nip position, the output of each of the state sensors 45, 46 is confirmed by the position detecting mechanism. In the nip position, the 筮]t 状 % % sensor 45 is in the ON state, and the second state sensor 46 is in the OFF state, and it is normal to display the state sensors 45 and 46 in the proper state. , that is, continue to sew. That is, the sewing machine main body 100 is sewn after the second stitch, and the movement toward the gripping position is completed while the needle of the needle 104 is positioned on the needle plate 1〇8 t S 33 20110403535. Next, when a needle drop with a predetermined number of stitches is performed, the operation control mechanism 80 controls the drive motor 42 of the drive mechanism 40 to move the second clamp member 2i and the second clamp member 31 from the clamp position. To the liberation position. Thereby, the magic gripping member 21 and the second detentive member 31 start from the lost position toward the liberation position. In this way, in the middle of the movement, the (fourth) position (four) connecting body 62 (four) connecting portion _ is in sliding contact with the second abutting member 64 (the state of the first 〇, US). Then, when the movement is further continued, the relative position adjustment coupling body 62 is oscillated against the tension of the tension magazine (4), and the second holding portion 32a is moved to the ith holding portion to be more greatly rearward. In this way, the state of the end of the line of the upper thread T is released, and the end of the line is released by the clamping mechanism 20. Then, when the movement to the liberation position is continued, the projection of the opening and closing plate 23 abuts against the front end surface 72 of the support member 51 (w2, U state). Thus, the opening/closing plate 23 is rotated forward against the biasing force * of the biasing spring 25, and the opening of the catching portion 21a is started to open. As described above, the X-starting portion 71 is in contact with the distal end surface 72 of the support member 51 after the sliding portion 62d of the relative position adjustment coupling body 62 and the second abutting member 64 start to be slid, and thus the second riding member 31 is in contact with the distal end surface 72 of the support member 51. The opening of the catching portion 21a is opened after the relative phantom holding member is relatively moved toward the γ-axis direction-side. Therefore, the second holding member 31 does not face the front with respect to the second clamping member. In other words, even if the opening is opened after the movement of the opening of the capturing portion 21a is formed, the second holding portion 32a can be surely prevented from reaching the open end of the capturing portion 21a. 34 201104035 After the driving of the rotation angle component is set in advance When the driving of the motor 42 is stopped, the first holding member 21 and the second holding member 31 reach the liberation position (the state shown in Figs. 14 and 15). The first holding member 21 and the second holding member The intersection of the center line A in the X-axis direction of 31 and the first holding portion 23b of the opening and closing plate 23 in the holding position is caused by the turning operation of the opening and closing plate 23 in the process from the nip position to the liberation position. The amount of movement for the Y-axis direction + side is greater than or equal to The amount of movement of the second clamping member 21 toward the Y-axis direction side, whereby the first clamping portion 23b of the opening and closing plate 23 does not move the upper wire T toward the Y-axis direction + side or does not move at all. After the first holding member 21 and the second holding member 31 reach the liberation position, the position detecting means 44 confirms the output of each of the state sensors 45, 46. It is normal for the first and second state sensors 45 and 46 to be in an ON state. When the right state sensor 45, 46 is in an appropriate state, the sewing is continued, and further, at the end of the sewing, The operation control unit 8 controls the operation of the tangential motor 82 to perform tangential cutting by the tangential mechanism. Next, the operation control unit 80 controls the operation of the drive motor 42 to cause the first holding member 21 and the second clamping. The member 31 is returned to the initial position from the liberation position. Thus, the one cycle of the sewing machine body 1 having the upper thread holding device 1〇 is completed, wherein the first clamping member and the second clamping are completed. The member 31 is located at the initial position and the clamping position In the case of liberating the position, if the normal output from each of the detectors 45 and 46 cannot be confirmed, the operation control unit 1 35 201104035 has an error and immediately stops the operation of the sewing machine body 1 。. When the upper thread τ held by the mechanism 20 is longer than a certain value, if the end portion of the wire is placed on the upward pulling path of the wire loop above the second stitch, for example, the passing path of the shuttle tip 121 of the middle shuttle 122 When the mode is present, it is pulled up by the upper thread loop, and is sewn into the fabric to form a loop that passes through the thread catching portion 22. However, due to the feeding of the cloth, the loop loop pulls the opening and closing panel 23 strongly forward. When the force exceeds the biasing force of the biasing spring 25, the opening and closing plate 23 is rotated to open the front side of the wire catching portion 22, so that the wire loop can be removed by the wire catching portion 22. <Operational Effect> As described above, in the case of the upper thread holding device 10 of the present embodiment, even if the loop of the passing portion 22 is formed, the cloth advances and the gripping mechanism 20 When the wire loop is moved, the opening and closing plate 23 is slowly and strongly pulled forward, and finally, when the force exceeds the biasing force of the biasing spring 25, the opening and closing plate 23 is rotated to open the front side of the wire catching portion 22, The wire loop that passes through the upper thread τ of the wire catching portion 22 can be easily and surely removed without automatically removing the wire loop from the wire catching portion 22. After the second grip member 31 is relatively moved toward the Y-fortunate side with respect to the first grip member 21, the opening of the catching portion 21a is opened, and the second grip member 31 is changed relative to the first feminine member 21. When the front side is also moved in the direction in which the opening of the capturing portion 21a is formed, the opening (four) is made to prevent the opening of the second holding portion 仏 from reaching the capturing portion 2u. An emergency stop or an on-line holding device can be used to improve the sewing efficiency or durability. In addition, the intersection of the center line A of the first holding member 21 and the second holding member 31 in the X-axis direction with the first holding portion 23b of the opening and closing plate 23 is configured from the clamping position to the liberation position. In the process, the γ-axis direction + side moves or does not move at all. Therefore, the first lost portion 23b of the opening and closing plate 23 does not pull the upper thread T rearward to release the upper line τ. Therefore, the upper thread T can be smoothly removed from the second grip portion 23b while preventing the tension, and the damage of the opening and closing plate 23 or the wrinkling can be prevented. In the above embodiment, the protruding portion 71 is formed to protrude from the opening and closing plate 23, but may be integrally formed with the opening and closing plate 23. In this case, for example, as shown in Fig. 18, it may be configured to be relatively openable and closable. The rod portion 23c of the plate 23 changes the position of the projection 71 in the z-axis direction. Thus, the distance between the center of rotation b of the opening and closing plate 23 and the front end of the protrusion 7u is adjustable, whereby the speed at which the opening and closing plate 23 is opened can be freely changed. In the case of the protrusion 71, it may be formed such that the support member μ is formed or the distance from the center of rotation β of the opening and closing plate 23 to the front of the opening and closing plate 71 can be adjusted. Needless to say, the present invention is not limited to the form, and may be appropriately changed. "Implementation [Simplified description of the drawings] Fig. 1 shows a side view of a part of the outline of the sewing machine. The front view of the shuttle mechanism is viewed in the X-axis direction. Figure 3 is a top view of the upper guide plate viewed from above. 37 201104035 Figure 4 is a perspective view showing the main components of the upper wire holding device. Figure 5 shows the upper thread protection « In the main configuration, the upper line (4) is an exploded perspective view of the periphery of the mechanism. Fig. 6 is an operation explanatory view of the upper wire holding device when the first holding member and the second holding member are positioned at the initial position when viewed from the right side. Viewed from below When the first holding member and the second holding member are in the initial position, the operation of the upper line holding device is turned off. The eighth drawing is held by the right side (4) when the holding member and the second holding member are held at the upper position. Fig. 9 is an operation explanatory view of the upper wire holding device when the second clamping member and the second holding member are positioned at the nip position when viewed from below. Fig. 10 is viewed from the right in front of the liberation position. The operation diagram of the upper line is hidden when the position adjustment coupling body and the second abutment member are slid. The eleventh figure is viewed from the lower side in front of the liberation position, and the connection of the second second abutment member is the upper line protection. The action of hiding is said. The figure is the picture. The figure 12 is viewed from the right side in front of the liberation position, and the upper line holding device (4) is abutted when the end portion of the protruding plate support member abuts. In the front of the liberation position, when the protrusion is in contact with the end portion of the support member, the action of the upper thread holding device is illustrated. The first line is viewed from the right branch when the second clamping member and the second member are located at the liberation position. Action statement In the first relationship, the action diagram of the upper line holding device when the second wife member and the second Kawasaki member are located at the liberation position is viewed from the bottom. The figure 16 is viewed from above to explain the movement of the opening and closing plate. 201104035 Top view of the holding mechanism. Figure 4 shows the top view of the other example. * The figure shows the top view of the other example of the closed plate. / 0 'M shows the bottom view of the upper line holding device. A state diagram showing the upper thread holding line in the conventional upper wire holding device is shown. Fig. 21 is a view showing a state in which the wire end portion of the conventional upper wire holding device enters the inside of the upper wire loop. Fig. 22 is a view showing the same as Fig. 21 A state diagram in which the upper wire loop is pulled up together. The figure shows a state diagram in which the wire loop passing through the wire catching portion is formed in Fig. 22. "Explanation of the other example of the first holding member of the first member." The figure shows a plan view of the state in which the second holding portion reaches the front end portion of the capturing portion. [Description of main component symbols] 10...Online Holding device 22...line catching unit 2〇...clamping machine upper thread holding mechanism) 23...opening and closing plate (opening and closing body) 2l·..first holding member 23a...closing portion 2 la...capturing unit 23b...first clip Holding portion 21b... mounting portion 23c... rod portion 21c... bracket portion 2 small. support member 21d..'through hole 25...potential spring 39 201104035 26...buckle pin 31 ·.. second holding member 32 ··· Front side member 32a...Second holding part 32b...Clamping surface 32c···Bending part 33...Back side member 33a...through hole 33b...Bracket part 34...Connecting body 3 5...Bucking pin 40" Drive mechanism 41—Y-axis moving mechanism 42...Drive motor 43...Connection mechanism 43a···Binding projections 44··· Position detecting mechanisms 45, 46... First and second state sensors 47...Shielding plates 47a, 47b ...1st and 2nd shielding area 5l·.. Supporting members 51a, 51b...through hole 52...guide groove 53...pressure plate 60.·. linkage action machine Structure 61... Extension spring (second biasing member) 62... Relative position adjustment coupling body 62a, 62b, 62c... Rotating engagement portion 62d... Sliding portion 63... First abutment member 64.·. 2nd arrival Connecting member 70... Opening and closing operation mechanism 71... Projection portion 72: Front end surface (support member) 80: Operation control mechanism 81: SS switch 82: Tangential motor 100: Sewing machine body 101: Vehicle table 102... Arm 104...Needle 40 201104035 104a...Needle rod 104b."Threading hole 105···Sewing machine motor 106···Wire tension device 107...Thread take-up lever 108...Needle plate 108a···Needle L 109··· Encoder 120...The shuttle mechanism 121...the shuttle tip 122...the shuttle 123...the large shuttle 123a...the support groove 124...the upper guide plate 124b...the line portion 125...the shuttle shaft 126...the protruding structure portion 127,128. . . lathe surface 124a ... guide hole 124 b ... line dividing portion 201 ... upper wire holding device 202 ... first holding member 203 ... line catching portion 204 ... first holding portion 205 ... second holding member 206 ... second clip Holding portion 207...potential spring 208···support member 209...cam member 210...first holding member 211...capturing unit 212...body 213· ··Opening and closing body 2M...Focusing member C...Material DP...Needle point K...Hake Ka...Hammer tip N...Sewing needle Na...Threading hole NL···Up and down movement path P...Needle plate 41 201104035

Pa...Pinhole S···Sewage T···Online

Ta... cut-off end (front end) ΤΑ... front end TL". upper thread loop W". loop ring 42

Claims (1)

201104035 VII. Patent application scope: 1. - The type of seam _ upper thread holding device is provided with: The first holding member is formed in a frame shape having an openable portion at the front, and can be inserted into the frame and The needle is connected to the upper thread. The clamping member is configured to be capable of holding the upper thread relative to the first holding member; and (4) the first driving member between the first inflaming member, and the first holding member is The second holding member = between the initial position at which the needle is inserted into the frame and the lost position at the upper line of the center, and the upper holding device of the slit is at the needle shank at the start of sewing The line end portion of the upper thread is sandwiched below, and after the predetermined number of seams are formed, the end portion of the rib line is released. The first holding member has: the first holding portion is configured to be The opening member is openable and closable; and the first biasing member is configured to provide a potential energy to the first training unit to close the opening, and the second holding member has a second holding portion For the above-mentioned __目, the formula of the near-pointing is assigned, And the second yoke portion is occluded between the first yoke portion and the second yoke portion, and the second nip portion is capable of being isolated from the first nip portion. Further, the above-mentioned upper thread holding and splicing mechanism has an opening and closing operation mechanism, and the mechanism is configured to operate the first central holding unit based on the relative positions of the smear-inducing member and the second holding member. And the opening mechanism is configured to move the first clamping member and the second clamping member at the clamping position from the initial position to a release position in a separation direction, and the opening and closing mechanism When the first holding member and the second holding member move from the nip position to the liberation position, after the movement is started, the first nip portion is operated to open the opening. 2. The sewing machine upper thread holding device according to the first aspect of the invention, wherein the opening and closing operation mechanism includes: a projection formed integrally with the first holding portion and protruding in the separating direction; and abutting on the aforementioned a stopper for the protrusion portion, wherein the opening and closing operation mechanism is configured to abut the protrusion portion when the first holding member and the second holding member move toward the liberation position by the nip position The collision stopper rotates the first holding portion in a direction opposite to the separating direction to open the opening. 3. The sewing machine upper thread holding device according to claim 2, wherein the protrusion portion is formed at a predetermined distance from a center of rotation of the first holding portion, so that the first holding portion is rotated When the opening portion is opened, the speed component of the first nip portion due to the rotation of the first nip portion and the direction of the separation in the opposite direction is changed by the first The movement speed of the first holding portion in the separating direction is higher than the moving speed of the first clamping portion 44 by the movement of the holding member toward the liberation position. 4. The sewing machine upper thread holding device of claim 3, wherein the projection is configured to adjust a distance calculated by a center of rotation of the first holding portion. 5. The sewing machine upper thread holding device according to the first aspect of the invention, further comprising: a support member movable in a direction in which the first holding portion and the second holding portion are separated from each other The method of supporting the first holding member and the second holding member; and the interlocking operation mechanism, the first clamping member and the second holding member are positioned relative to the support member to cause the first clamping When the member moves relative to the second holding member, the interlocking operation mechanism causes the first holding portion and the first portion to move along with the movement from the initial position to the holding position by the driving mechanism. (2) the nip portion is in close contact with the relative movement of the wire end portion, and the first nip portion is separated from the second nip portion as the nip position moves away from the liberation position. And the relative movement action of liberating the line end portion. 45