TW200840901A - Sewing machine - Google Patents

Abstract

A sewing machine comprises: a holding device of upper thread for holding and releasing the initial portion of the upper thread under a throat plate; a shuttle mechanism for tangling the upper thread and lower thread under the throat plate; and a thread-cutting mechanism for cutting the upper thread and the lower thread between the throat plate and the shuttle mechanism. The holding device of the upper thread has a thread-holding tool which moves along the lower surface of the throat plate and between a needle-bottom position in the positions of the thread along which a supplying needle moves, and a standby position in the positions to move away from the needle-bottom position. The thread-holding tool is at a thread-releasing state when it is located at the needle-bottom position. Furthermore, the thread-holding tool is driven into a thread-holding state when it is moved from a middle position to the standby position. The middle position is located between the needle-bottom position and the standby position. The sewing machine further comprises an operation control part. The operation control part can be operated to put the thread-holding tool at the needle-bottom position when the first stitching/weaving is proceeded at the beginning of sewing, and to keep the thread-holding tool at the standby position when proceeding the final stitching/weaving. After the final stitching/weaving, the thread-holding tool is moved from the standby position to the middle position. Afterwards, the thread-cutting mechanism is actuated to cut the initial portion of the upper thread.

Description

200840901 IX. INSTRUCTIONS: I: TECHNICAL FIELD OF THE INVENTION FIELD OF THE INVENTION The present invention relates to a sewing machine comprising - a wire holding device for holding the upper portion of the slit (four) at the lower end of the throat plate. C. Prior art 4] Background of the Invention A conventional sewing machine system #士^, ° has a lower side for holding a needle on the lower side of a throat plate. The upper thread holding device borrows 10 to hold the seam start end portion of the upper thread on the back side of the cloth and the seam is appropriately formed from the - first seam (see, for example, Jp 2000-279666 A) quilting, knife In the machine, § - sewing at the beginning of the work, one shuttle of the fishing line for personal use; the first seam for the needle to catch the upper thread to pull the sewing start end portion to the lower side of the throat plate, and the upper thread holding device's one-line holding tool system The retaining slit may open the beginning portion of the 15 and move backward (on the side of the vertical cylinder portion) and stand by. When the seam is stabilized after several stitches, the start end portion of the seam file is released. Therefore, it is possible to prevent the slit end portion of the upper thread from slipping out of the back (4) of the crucible, whereby a seam is appropriately formed from a first slit. In a sewing machine having a wire cutting mechanism, a moving blade rotates along a vertical movement path of a needle 20 to capture and cut a pinhole through the throat plate and a shuttle mechanism on the lower side of the throat plate. The lower line is used to cut the upper and lower lines at the end of a sewing work, and the following problems are caused when the upper line holding device is to be sewn. More precisely, 'When sewing a button with two holes, one stitch alternates 5 200840901 several times through two holes (that is, several stitches are made), and passes between the throat plate and the shuttle. And the lower thread is cut by the wire cutting mechanism after the last needle is penetrated. Also, in the case of a four-hole, each of the two holes repeats the operation or every two holes performs the sewing work and the line is subsequently cut. In the button sewing operation in which the needles are alternately penetrated through the two holes to form a plurality of seams as described above, the sewing start end portion of the upper thread held by the upper thread holding device is released and suspended for a few seconds after the start of sewing and thus It is captured several times through the lower line between the two holes to cause one of the states in which the fine circuits are entangled with each other. For this reason, the sewing quality, that is, the quality of the workpiece is deteriorated. On the other hand, the sewing work is ended in a state in which the sewing start end portion maintains the suspension to be pulled out by the one-line holding tool by a length without being entangled with the lower thread in some cases. Newcom can't be reliably sewn to re-do 15 sewing work, resulting in deterioration of work efficiency. Alternatively, a needle penetration track is left on the cloth for sewing the button, so that the sewing quality is deteriorated. SUMMARY OF THE INVENTION One object of the present invention is to reliably and finely form a seam at a sewing start 20 in a button sewing work, thereby improving sewing quality or enhancing work efficiency. According to a first aspect of the present invention, a sewing machine (100) comprises: - an upper wire holding farm (10) operable to hold and release a sewing start end portion of an upper thread below the throat plate (10); 6 200840901 a shuttle mechanism (120) 'which captures the upper thread below the _ pinhole of the throat plate (1〇8) to entangle the line with it; and a wire cutting mechanism (130) that cuts through the throat plate (1〇8) The pinhole (1〇8a) and the shuttle mechanism (120) are above and below the line, and one of the buttons (B) is sewn to a workpiece (W) by an alternate stitch between at least two holes of the button. The slitting machine (100) is characterized in that the upper thread holding device (1 〇) is provided with a holding tool (20), which can be moved along the lower surface of the throat plate (108) to be located at one needle (104). The position of the needle bottom along the position on the moving line and the standby position of the position where the 10 body is moved away from the needle bottom position, wherein the line holding tool (20) is located when the thread holding tool (20) is at the needle bottom position In the one-line release state, and when the wire holding tool (20) moves from an intermediate position to the standby position, a line holding state is obtained, wherein the intermediate position is between the needle bottom position and the standby position, and wherein the 15 stitching machine (1 (10) Further comprising an operational control component (80) operable to place the wire retaining tool (20) in the needle bottom position as the needle (104) penetrates through the workpiece (w) in a first stitch; The thread holding tool (20) is maintained in the standby position at least when the needle (1〇4) penetrates through the workpiece (W) in the stitching; the thread holding tool (2〇) is moved from the standby position to the intermediate position after the final stitching And 2〇, then actuate the wire cutting mechanism (13〇) to cut the sewing on the line The leading end portion. According to a second aspect of the invention, the operating control member (8〇) is further operable to actuate the needle cutting mechanism (130) while maintaining the wire holding tool (2〇) in the standby position for cutting through the throat plate after the final stitching The upper and lower lines between the pinhole (1〇8a) of the (108) and the shuttle mechanism (120), and thereafter, the wire holding tool (2〇) 7 200840901 is moved to the intermediate position to cut the sewing start end portion of the upper thread. . According to a third aspect of the invention, the operation control member (8 可) is operable to cut the pinhole (10) a) through the throat plate (touch) by a single actuation of the wire cutting mechanism (130) after the final stitching The upper and lower lines between the shuttle mechanisms (10)). According to a fourth aspect of the present invention, the seam rushing machine (100) further includes a moving machine fine, 84, just), which holds and moves the workpiece (w) to set the needle just at a predetermined position, 10 15 = In the case of - in the first - stitching - stitching point and the last stitching - seam U overlap each other, the operating control part (8〇) can further fall to the structure (83, 84, 140) to locate The workpiece _ is placed at the stitching point of the stitch-sewn stitch before the last seam is placed in the middle/holding tool (2〇) to the intermediate position. Holder core state #_ The beginning part is fixed on the line as Lizhong weaving. Therefore, it is possible to effectively reduce the entanglement and produce the nest. In the case of the released wood, since the lower side is moved from the standby position to the bottom position after the last stitching, the pinhole such as the 'axis' and then the line_mechanism is operated. Therefore, the pinhole is oriented below the pinhole toward the wire retainer. Therefore, the slack and a slight suspension of the wire is cut, and the cutting start portion can be cut with the slit between the pinhole and the bobbin and the upper thread. The dragon was released. The part is not in the upper line holding device at this time, and the cutting line can be performed by the _ white ± cutting mechanism. The case where the heart is cut by the knife, the line cut 20 200840901 Therefore, a residual thread can be shortened in the sewn workpiece to enhance the sewing quality. Moreover, the post-processing of the residual line after the sewing work can be eliminated to enhance productivity. Moreover, special wire cutting work for cutting residual lines can be eliminated, thereby reducing the cost of sewing work. According to the second aspect of the invention, after the final stitching is completed, the upper and lower thread portions which are cut by the needle hole and the shuttle mechanism are cut and the sewing start end portion of the upper thread is subsequently cut. Therefore, the burden on the wire cutting device and the more reliable cutting of the wire can be reduced as compared with the case in which the wires are collectively cut. According to the third aspect of the invention, after the final knitting is completed, the upper and lower lines between the start end portion and the shuttle mechanism are simultaneously cut by the slit 10. Therefore, the time required for the cutting work for each line can be shortened. According to the fourth aspect of the present invention, when the stitch point of the first stitch is different from the stitch point of the last stitch, the operation control member aligns the stitch at the stitch point of the first stitch, and moves the thread holding tool To the middle position. Therefore, it is possible to cause the pin 15 to be a base of the workpiece on the side of the sewing start end portion of the upper thread to approach the pinhole of the throat plate. Therefore, when the wire holding tool is moved to the intermediate position, the sewing start end portion of the upper thread can be cut more reliably by the wire cutting mechanism. Further, the sewing start end portion remaining on the upper side of the workpiece side after the cutting work can be more greatly shortened. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic side view showing a wheel Zheng of a sewing machine having a part removed; Fig. 2 is a plan view showing an upper wire guide as shown in a U direction of Fig. 8; 9 200840901 Fig. 3 is a front view of an inner shuttle showing a shuttle mechanism as shown in the X-axis direction, Fig. 4 is a plan view showing a wire cutting mechanism; and Figs. 5A to 5C are views showing an operation of the wire cutting mechanism Example 5; Figure 5A shows the standby position of a moving knife; Figure 5B shows the forward rotation of the moving knife; and Figure 5C shows the backward rotation of the moving knife; Figure 6 shows the upper line. Fig. 7 is an exploded perspective view showing the upper thread holding device; Fig. 8 is an operation showing the upper thread holding device as seen from the right side in the case where the one wire holding tool is placed in a needle bottom position. Fig. 9 is an explanatory view showing the operation of the upper thread holding device as seen from the lower part in the case where the wire holding tool is placed at the bottom position of the needle; Fig. 10 is a position where the wire holding tool is placed in a bent position. Case An illustration of the operation of the upper wire holding device as seen from the right side in the 15th example; FIG. 11 is an explanatory view showing the operation of the upper wire holding device as seen from the lower part in the case where the wire holding tool is placed in the bent position of the wire. Figure 12 is an explanatory view showing the operation of the upper thread holding device as seen from the right side in the case where the wire holding tool is placed in a standby position; 20 Fig. 13 is such that the wire holding tool is placed in the standby position. An illustration of the operation of the upper wire holding device as seen from the lower part in the case; FIG. 14 is an explanatory view showing the operation of the upper wire holding device as seen from the right side in the case where the wire holding tool is placed in the relaxed position of the wire; Figure 15 shows the case where the wire holding tool is placed in the online relaxed position. The display shown in the lower part of 200840901 is shown in the upper part. Figure 16 is an explanatory view of the operation as seen from below; The description of the relationship between the change of the relative position adjustment and the change of the connection machine = and - the relative position of the intermediate member to the 17D is the display, the mechanism and The position and line relax the D-brother phase, which is not a line-cut relationship; the first diagram between one state of the upper line shows the standby position of the line holding tool - the state of the cutting operation; the private knife 10 Figure 17B shows a state in which the line is held - the state of the forward rotation; the knife in the position of the line = =: the display line is held, one of the knives in the line-releasing position is rotated, and the state of the line is started. The end portion of the cut-off state 15 and the line holding position of the wire holding tool in the position of the line; the movement of the knife in the line is rotated backward. Figure 18 is a block diagram showing a control system of the sewing machine. A flow chart showing an operation of the seam rush machine. [Implementation of the cold type] 20 Detailed description of the preferred embodiment [The overall schematic structure of the sewing machine] will refer to the first! An embodiment according to the present invention is described in detail in FIG. According to one embodiment of the embodiment, the sewing machine 1 is configured to make a button and a cloth phase according to only one predetermined sewing pattern; in the body of the body, the needle is relatively moved 11 200840901, and via the holes of the button Sewing is performed a set number of times. The illustration is a schematic view showing a sewing machine according to an embodiment of the present invention. The sewing machine 100 has an outer contour that includes a bed portion 101 that is located in its fifth portion, a vertical barrel portion 102 that rises from the end of the bed portion 1〇1, and a vertical barrel portion 102 from the sewing machine. . The arm portion 101 extends the arm portion 1〇3. The sewing machine corresponds to a so-called cylindrical bed-stacking machine in which the tip end portion of the bed portion 1〇1 is formed almost cylindrically and the width in the -X-axis direction is set smaller than the width in the other portions. In the following private description, the z-axis direction is the vertical movement direction of one needle 1〇4, and the Y-axis direction is the longitudinal direction of the bed portion ΠΠ and the arm portion 1G3 and is orthogonal to the z-axis direction, and the X-axis direction is orthogonal. In the direction of the 2 axis direction and the 丫 axis direction. Also, when the sewing machine 100 is placed on the - horizontal plate, the + (positive) side of the 2-axis direction becomes the upper side of the shaft machine, and the side of the Z-axis direction becomes the - the lower side of the machine. Similarly, the + side of the X axis is the right side, the x axis is the left side, the + side of the Y axis direction is the front side, and the γ axis direction is the back side. The sewing machine 100 includes: a needle just disposed in the arm portion of the arm portion and driven by the sewing machine motor 105 to reciprocate in a vertical square ·-upline supply source (not shown), Provided in the upper portion of the arm portion 103 and used to supply an upper wire to the needle 1〇4; - a wire tension H1G6 that is placed between the upper wire supply and the needle with a predetermined load - a movement in the feed direction produces a resistance; a line take-up device between the line tensioner 106 and the needle just at the beginning of the pre-12 200840901 timing by the first line picker 107; a throat plate 108, disposed on an upper surface of the bed portion 101 and provided with a pinhole 8a for inserting a tip end portion of the needle 104; a shuttle mechanism 120 disposed in the bed portion 1? Below the throat plate 108 and t5 is used to take an upper loop from the needle 104 moving downward and insert the lower thread through the loop; an upper thread holding device 10, which is a first slit of the needle 104 woven on the throat plate φ 108 is held with the shuttle mechanism 120 to hold an upper end; a line cutting mechanism 130 is disposed in the bed portion 101 and After the sewing 10 is operated, the cutting pair passes through the upper and lower lines between the pinhole 108a of the throat plate 108 and the shuttle mechanism 120; the cloth holding mechanism 140' holds a cloth and a button and provides a moving operation for the needle; A machine (not shown) that sweeps the upper line cut above the cloth; 15 and • remains as a control unit 80 for controlling an operation of each structure. The needle 104 has a wire hole formed near a tip end portion (lower end) thereof and the upper wire is inserted through the pinhole. Further, the needle 1〇4 is supported on the lower end of a needle bar 1, and the rotation and driving force transmitted from the sewing machine motor 105 are replaced by 2G I into a vertical force and the county reciprocating force is-cranked. A mechanism (not shown) is applied to the needle bar just (10) to cause the needle bar to perform a vertical reciprocating motion in a predetermined cycle. The slitter motor 1〇5 is provided with an encoder 1〇9 (see (4)). Then 贞’ is the amount of rotation. It is assumed that when the needle 104 is placed in a position of a top dead center, the Q-keep and the zero-degree angle are placed, and the sewing machine 1 is still placed with a power 13 200840901. The output shaft is at any angular position of 0 to 360 degrees. It is output to the operation control section 80. The wire picker 107 is provided with an upper wire insertion hole (not shown) and performs a vertical movement in a state in which the upper thread is inserted therein, whereby the upper thread inserted into the needle 104 is pulled up when it is lifted. Moreover, the wire pick-up device causes the wire picker ι 7 to perform a straight motion in the same cycle as the needle 104, and the wire picker ι 7 reaches one of its top dead center timings which arrives slightly later than the needle 1〇4 One of its top dead points is timed. 10 15 20 The line tensioner 1G6 consists of a line tension disc holding the upper line and a line tension solenoid 86 (see Figure 18). The change _ is used to hold the upper line thrust to control the line tension. The thrust (4) of the line tension screw (4) is controlled by the control unit 80. [Bus mechanism] As shown in Fig. 3, the shuttle mechanism 12 includes a half-reciprocal rotation and is captured by the 钧m protruding in the circumferential direction of the rotation to capture the upper line 9 = k 122 Rotating the inner shuttle of the shuttle to the upper wire guide 124 on the outer shuttle 123, and - extending from the side of the vertical cylindrical portion 7 toward the outer shuttle 123 parallel to the longitudinal direction of the bed portion and used to - semi-reciprocating rotation and drive

^么街·If dynamic (not shown) force U to the shuttle shaft 125 of the inner shuttle 122. As shown in Fig. 8, the inner shuttle 122 is a female member, and the % formed over an outer periphery in a manner that can be repeatedly performed halfway is turned into a support portion 126 which is in sliding contact with the outer shuttle 123. The 127 and 128 are formed on both sides of the bearing ring surface 4 of the protruding portion groove 123a. The hook 121 is formed on one end in the circumferential direction of the portion 126 of the rail-shaped projection 14 200840901 and is operated by the half-pass I of the inner shuttle i22 to enter the upper thread & only through the side of the straight hole of the needle. The "guide hole" of the plate 124 takes the loop of the upper line. Therefore, the hook 121 has a tip, a portion which is inclined toward the direction L of one of the rotation center lines of the inner shuttle 122, and a vertical movement path N of the sentence 121 and the projection portion 126 with respect to the needle 1〇4 is Configure on one side of a ruler. The shuttle shaft 125 is positioned on the R side with respect to the inner shuttle 122 (the R side will hereinafter be referred to as the shuttle shaft side) and is not directly coupled to the inner shuttle 22 but to the inner shuttle 122. The shuttle shaft 125 transmits a driving force for half-reciprocal rotation to the inner shuttle 122 via a driver for performing half-reciprocal rotation. The shuttle shaft 125 of the shuttle mechanism 120 is disposed parallel to the γ-axis direction, and is positioned with respect to the inner shuttle 121 on the - side (backward) in the γ-axis direction and used to apply the semi-reciprocating rotation and the driving force in the same direction. One of the driving forces from the sewing machine motor 1〇5 branch is converted into a reciprocating rotation and the reciprocating rotation is transmitted to the shuttle shaft 125 to 15 to perform the vertical reciprocating operation of the butt 4 and the semi-reciprocating rotating operation of the inner shuttle 122 to a predetermined The phase differences are synchronized with each other. The upper wire guide 124 is a plate-shaped member for preventing the upper wire from coming into contact with and tangling the bearing ring surfaces 127, 128 of the inner shuttle 122. The upper wire guide is formed with a guide hole 20a having a shape as shown in Fig. 2 when viewed from above the third figure (in the U direction). The guide hole 124a has a line driving portion 124b for dispersing an upper line circuit which is scooped by the hook 121 of the inner shuttle 122 at a near center portion of the right side thereof. As shown in Fig. 3, the upper loop of the hook 121 is set by the line dividing portion 124b to set the hook 121 as a boundary and is divided into a line NF on the line side and a line on the cloth side in the front-rear direction. The segment NB' can prevent contact and entanglement between the bearing surfaces 127, 128 of the inner 15 200840901 shuttle 122. [cloth holding mechanism] The cloth holding mechanism 140 includes a cloth feeding base Hi which can be placed along the upper surface of a bed 5 by an X-axis motor 83 as a stepping motor and a γ-axis motor 84. Moving and positioning in the axial direction and the Y-axis direction, a cloth holding member 142 is disposed to have an up-and-down motion at a front end of the cloth feeding substrate 141, and a first oscillating arm 144 is disposed by The cam 143 in the actuating motor 82, which is a stepping motor, is oscillated, and a transmission rod 145 is used for performing a longitudinal movement by the oscillating motion of the first oscillating arm 144. The L-shaped second oscillating arm 146 It is used for the oscillating action by the longitudinal movement of the transmission rod 145, the lifting member 147 is provided with a vertical movement operation by the second vibration arm 146, and an oscillating rod 148 having a cloth feed substrate The 141 oscillates to support both ends. The cloth feed substrate 141 is attached by a well-known structure so as to be movable along the surface over the bed 15 minutes 1G1. Further, with the well-known power transmission structure, the rotation and driving force of the X-axis motor 83 and the γ-axis Malay are converted into the moving forces in the X-axis direction and the Υ-axis direction, and the moving force is transmitted to the cloth feeding base. 141. It is easy to say that the cloth holding mechanism 140 is operated by the motor 83 and the shaft motor _ 20' as a moving mechanism for holding a cloth (a workpiece) and a button, and moving the cloth and the mouth with respect to the needle. The needle is placed at a predetermined seam point. The cloth holding member 142 is disposed above the throat and can be - the most capable

The recording is held on the cloth, and the movement in the downward direction causes the state I to release the holding state in an upward movement. 16 200840901 The cloth retaining member 142 is supported on the cloth feed substrate 141 so as to be able to have an up and down motion and simultaneously coupled to one end of the oscillating rod 148. When one end of the oscillating lever 148 is vertically moved by an oscillating motion, the cloth holding member μ is also moved upward and downward. The oscillating lever 148 has another knowledge that the tension member can be applied upward by a tension spring (not shown), and the cloth holding member 142 is always pushed downward by the pulling force. An abutting portion 148a is disposed adjacent the other end of the oscillating lever 148. A pressing force is applied downwardly from the lower end of the lifting member 147 to the abutting portion 14%. The 4-port lifting member 147 is arranged in such a manner that a longitudinal direction thereof is set in a vertical direction and an up-and-down motion is performed in the longitudinal direction. An upper end of the lifting member 147 is coupled to the second oscillating arm 146, and a lower end thereof is coupled to an operation adjusting coupling member 149 to stabilize a posture of the lifting member 147. The coupling end of the second oscillating arm 146 performs a vertical oscillating action to provide a vertical motion to the lifting member 147. The second oscillating arm 146 is almost L-shaped as described above, and is rotatably supported by a sewing machine frame at a bent portion thereof. The lower end of the second oscillating arm 146 is coupled to the transfer rod 145 so that an oscillating operation is longitudinally provided, and a vertical action is provided to the lifting member 147 on an upper end side. The transfer rod 145 has a coupling end to one end of the first oscillating arm 144, 20 and the other end of the first oscillating arm 144 is coupled to the cam 143. The cam 143 is a peripheral cam to be rotated by the actuating motor 82, and the other end of the first oscillating arm 144 abuts against an outer periphery of the cam 143 and the first oscillating arm 144 oscillates corresponding to the outer peripheral shape. The cloth holding mechanism 140 is set in such a manner that the cloth holding member 142 is lifted by a motor output shaft having a predetermined angle by the operation and rotation and driving operation. Yi Luzhi, cloth and New Zealand are controlled to be held and released by a rotation angle of the actuating motor. ▲ In the work of a sewing button, according to the number of holes of a button B and matching

5 (see pages 17A and 17D), a space between the holes, the line crossing order or the presence of the 'line cutting sub-operation in the middle, the operation control unit 8 〇 stores a variety of sewing data to perform - sequence sewing operating. Select one of the sewing materials to perform the work. In this example, in the cloth holding mechanism 140, the X-axis motor 83 and the Y-axis motor 84 are each sewn, that is, driven by a sewing amount determined in the sewing data, wherein the moving and positioning cloth feeds the substrate i4i and The cloth holding member 142 is thereby sewn through the respective holes of the button b in a predetermined order in a predetermined order. The line sweeping mechanism (not shown) includes a line sweeping member that obtains an action from the second oscillating arm 146 via a plurality of connecting members for a reciprocating rotation. The wire sweeping member is disposed on a side of the surface portion of the sewing machine such that a portion thereof is passed through a portion between the lower end of the needle placed in the upper needle position and the throat plate. The upper threading line between the pinhole 1〇% of the throat plate 1〇8 and the shuttle mechanism 12〇 is cut and the wire sweeping member is then rotated so that the upper wire end thus cut can be pulled up from the cloth. 2〇 [Wire cutting mechanism] Fig. 4 is a plan view showing a main portion of one of the wire cutting mechanisms 13, and Fig. 5 to 5C are explanatory views showing an operation thereof. As shown in Figs. 4, 4 and 5, the wire cutting mechanism 130 includes a first oscillating arm 132 oscillated by a cam 131 disposed in the actuating motor 82, one for the first oscillation The oscillating motion of the arm 18 200840901 132 performs a longitudinal movement of the transmission rod, a second vibrating arm 134 oscillated by the longitudinal movement of the transmission rod 133, a fixed knife 135 fixed to the lower surface of the throat plate ▲ (10) - a knife 5 136' for making a movement of a tip end of the fixed knife 135 when reciprocatingly rotating, and a coupling member 137 for coupling the moving knife 136 to the second oscillation arm 134 The cam 131 is a grooved cam that is rotated by the actuating motor 82, and • one end of the first oscillating arm 132 is coupled via a roller (not shown) that moves along a peripheral groove of the cam 131. To the cam 131. To this end, the first oscillating arm 132 10 performs an oscillating motion corresponding to the groove shape of the cam 131. The first oscillating arm 132 is rotatably pivotally supported on the sewing machine frame at an intermediate portion thereof. And arranged in the near Z axis direction. The upper end is as above Coupling to the cam 131 and the lower end is coupled to a rear end of the transmission rod 133. When the upper end of the first oscillating arm 132 is oscillated by the cam 131, a reciprocating operation of the longitudinal direction 15 is thus provided to the transmission rod 133. The oscillating arm 134 is rotatably framed on a lower surface of the throat plate 1 在 8 in an intermediate portion of the longitudinal direction thereof, and has one end coupled to a front end of the transmission rod 133. The other end of the arm 134 is coupled to the moving knife 136 via a coupling member 137, and the actuation motor 82 finally provides a moving knife 136 via the first 20 oscillation arm B2, the transmission rod 133, the second oscillation arm 134, and the coupling member 137. The reciprocating rotation is performed. The moving blade 136 is rotatably pivotally supported on the lower surface of the throat plate 1 8 and performs a reciprocating rotation operation while causing the upper surface of the moving blade 136 to become in sliding contact with the fixed blade 135. The surface is removed. When the cutting 19 200840901 operation is not performed, the moving knife 136 is retracted into a standby position shown by the two-point chain line of Figures 4 and 5A, and moves forward when the cutting operation is performed. 4 and 5B are shown by solid lines After a forward position, a reciprocating rotation is performed to return to the standby position. 5 As described above, the upper thread is captured by the hook 121 of the inner shuttle 122 to form an upper loop, and the hook is passed through the line dividing portion 124b of the upper guide 124. The 121 is set to a boundary and is divided into a line segment on the needle side and a line segment NB on the cloth side. In this state, the moving knife 136 cuts the upper thread. In this example, the line segment NF on the needle side in the upper thread When the line segments NB on the cloth side are both cut, the upper thread is cut at two places 10. To avoid this phenomenon, only the line segment NB on the cloth side is selectively cut. For selection, the moving blade 136 is provided with a projection protrusion 13 6 a which protrudes toward the side of a front edge portion. In the forward rotation of the moving blade 136, the separation protrusion 136a is set to pass through a portion between the line 15 NF on the needle side in the upper line divided by the line dividing portion 124b and the line segment NB on the cloth side. . When the moving blade 136 performs the other rotation, the line segment NB on the side of the cloth which is only the outer side of the radius of rotation flows to the outside in one of the radial directions of the moving blade 136 and comes to a knife which is disposed on the moving side. A line on the side of the rear edge portion of 136 is taken around the portion 136b (see Fig. 5B). Further, one of the upper surfaces of the moving blade 136 is provided with a blade portion 136c to generate a step portion from the upper surface. By one of the moving blades 136 rotating backward, the line segment NB on the cloth side of the wire catching portion 136b is interposed between the tip end portion of the fixed blade 35 and the blade portion 136c and thus is cut (see Figure 5C). As described above, the actuating motor 82 can perform an uplifting, a line sweeping operation, and an operation of the wire cutting mechanism 13A of the 2008 20 200840901 cloth press via the cam 143 and the cam 131. The shape of each cam and its attachment angle are adjusted to perform various operations within a non-overlapping angular range of one of the ▲ rotations (0 to 360 degrees) of the actuation motor 82. Exactly, the shape of the cams 131, 143 is set and attached to the actuating motor 82 by means of a rotation of one of the predetermined directions of the actuating motor 82 in this order to perform "one down of the cloth retaining member" Movement,,, "One of the moving knives moves forward, one of the moving knives moves first and backward", "One of the line sweeping members reciprocates", "One of the moving knives moves forward Exercise,,, "One of the moving knives moves backwards, and," and "a lifting of the fabric holding member,". 10 [Upper wire holding device] The upper wire holding device 1G is at the beginning of the sewing machine at the beginning of the sewing machine, and is placed at the beginning of the sewing machine (4) above the needle 1G4 and the moving upper end is thus held. To the position on the rear side of the vertical movement path of the needle to prevent the _ start end portion of the upper thread from slipping out 20, the upper thread holding device 10 includes the wire holding tool 20, the moving member 4〇, and the ela-operation Component 6G. The wire holding fixture 2 () includes a holding portion 2 for holding the upper end of the sewing start portion and - in the direction of moving the intermediate portion 31 toward or removing the holding portion 21 with respect to the portion The object is held together with the holding portion 21 to hold or release the upper portion of the _starting knife. The _ portion _ moves the wire retainer (4) to a needle bottom position on the vertical moving path of the needle (see the Between the standby position on the side of the rear side _" of the vertical moving path (4) of the needle. The vertical moving road view is parallel to the Z-axis side 21 200840901 and is connected as a top dead center. The tip position of the needle 1〇4 and the tip end of the needle 104 at the dead point The path of the position. When the wire holding tool 2 is placed at the needle bottom position, the relative holding member 60 causes the wire holding tool 20 to be in a release state, and the wire holding tool 20 is released between the needle bottom position and the standby position. The singularity is switched to a holding state. Each part will be described in detail below. [The wire holding tool of the upper wire holding device] Fig. 6 is a perspective view showing the upper wire holding device 1 ,, and Fig. 7 is an exploded perspective view showing φ As shown in these figures, the wire holding tool 2 includes a holding member 22 having a holding portion 10 and 21 and an intermediate member 32 having an intermediate portion 31. Both members 22 and 32 have a rectangular shape and are superposed. The intermediate member 32 placed on the upper side is supported on the opposite operating member 6A so as to be slidable in the Y-axis direction (front-rear direction) and wherein the longitudinal direction is rotated parallel to the γ-axis direction. In the case of the following parts, it is assumed that the representative is in a state in which the wire holding tool 2 is supported on the relative operating member 6G without special attention. A direction 0 port member 22 is formed with rectangular through holes Μ, Μ on its end portions on the end portions (i.e., on the front and rear sides). _ on the front side includes • 20 f holes 23 - The inner surface (which is a surface on the side opposite to the side of the + side) is used as the holding portion 2, and the through hole 23 on the side of the side is also used as a guide hole to guide Intermediary of the intermediate structure: a movement in the longitudinal direction of the blade. A tensile force of the knife relative to the known component 60. a) the rental of the knife κ 62 is disposed on the rear side of the holding member 22 22 200840901 on the rear side 24 And forming an operating area for performing expansion and contraction. One end of the tension spring 62 is coupled to a front end of the through hole 24 on the rear side. ▲ one of the frame portions 25 extending in the X-axis direction is disposed in a slightly rearward position of the middle portion of the holding member 22 in the Y-axis direction, and has a shape of a round rod and a round rod shape. The engaging pin 26 extending downward is fixed as a tip end. The holding member 22 inputs a moving force generated by the opposing operating member 60 via the engaging pin 26 in the longitudinal direction. The member 32 is divided into two parts, namely a front side portion 33 and a rear side portion 34, and they are coupled to each other via a coupling member 35 to obtain a unitary and almost long-board shape. The intermediate portion 31 is provided on a front end of the front side portion 33. The intermediate portion 31 has a flat portion 3A that can be brought closer to the holding portion 21 and separated from the holding portion 21 and can be abutted thereon, and a lower portion of the self-holding member 22 via the lower portion of the holding portion 21 in the abutting portion A bent portion 36 in which the tip end face projects forward. To this end, the front side through the front side through hole 23 of the holding member 22 is inserted from the upper side. The upper line can be held by the relatively close operation of the holding member 22 and the intermediate member 32 to the flat portion of the holding portion 21 and the intermediate portion 31. Part between 3 〇. The upper thread held thereby is bent forward by the portion of the material extending from the lower end of the flat portion 3〇. Therefore, the upper line can be brought into a downward bend state from the front part. Since the upper end is positioned further forward and is suspended in this state by the bent portion 36, it is displaced forward from the shuttle 122 of the shuttle mechanism 120 located below. Therefore, contact and entanglement with the inner shuttle 122 can be prevented. The rear side portion 34 has a through hole 37 formed in the longitudinal direction. In the middle 23 200840901

In the case where the dielectric member 32 and the holding member 22 are supported on the opposite operating member 60 in a stacked state, the through hole 37 is superposed on the rear side through hole 24 of the holding member 22 and disposed relative to the tension spring 62 of the operating member 60. On its inner side, it forms an operating area for expansion and contraction. The other end 5 of the tension spring 62 is coupled to a rear end of the through hole 37. To this end, the intermediate member 32 and the holding member 22 are brought into a coupled state via the tension spring 62, and an elastic force is applied to the holding portion 21 of the holding member 22 and the intermediate portion 31 of the intermediate member 32 in such a manner that it always approaches And against each other. A frame portion 38 extending in the X-axis direction of the + side is disposed in the intermediate portion of the intermediate member 32 in the Y-axis direction, and has an engaging pin 39 for a round rod shape and extending downward. The tip end portion. The intermediate member 32 is input by the engaging pin 39 into the moving force in the longitudinal direction generated by the opposing operating member. [Moving parts for the upper wire holding device] 15 20 The moving parts 4〇 will be described with reference to Figs. The private moving member 40 moves the wire holding tool 2〇 between the needle bottom position, the first line bend position, and the line rest position (an intermediate position). When the holding tool 2G is moved back and forth by the moving member 4G, the opening between the holding member 22, the Μ1 and the flat portion 3G of the towel member 32 is switched according to the position of the phase in the movement direction of the holder. And off 24 200840901 The line bending position is on the back side of the needle bottom position. At the in-line bending position, the holding portion 21 of the holding member 22 and the flat portion 3 of the intermediate member 32 are about to be closed. The standby position is a position at which the holding portion 2 of the holding member 22 and the flat portion 3G of the intermediate member 32 are completely closed. The standby position is the last of the four positions. The wire releasing position is a position at which the holding portion of the holding member 22 and the flat portion (4) of the intermediate member 32 are completely closed. Relax online, line

10 15

20 The holding tool 20 is placed between the line bending position and the standby position. The moving part 40 includes a line holding tool for the reciprocating movement in the γ-axis direction supported by the relative operating member 60, and a goding axis moving mechanism, and a wire holding tool 20 for placing the needle bottom position and the standby position for a long time. The moving position making unit 46. The γ-axis moving mechanism_operation is controlled by the operation control unit (10) based on the detection of the moving position detecting unit 46. As shown in FIG. 7, the cymbal moving mechanism 41 includes a line holding motor 42' for outputting a rotational and driving force _ its own center position of the vibration is coupled to the output shaft of the wire holding motor 42. The main moving joint member. One is for applying a moving force in the direction of the x-axis to the opposite operating member _ a relative position adjusting joint (10) is purchased structurally pure, and _ is used to transfer a driving force autonomously moving connecting member 43 It is the turn of the __ joint member 45. In the selective rotation angle amount, the driven wire holding motor 42 is a stepping motor and is controlled by one of the positive and negative directions by operation operation. 2008 20081 The main moving coupling member 43 fixes one end and is coupled to the wire grip. Holding the output shaft of the motor 42 and rotatably coupling the other end to one end of the transmission coupling member 45

The driven coupling member 44 has one end pivotally supported on a guide plate 61 of the opposite operation portion 5 member 60, and the other end is rotatably coupled to the other end of the transmission coupling member 45. Further, the driven coupling member 44 which is in the shape of a dogleg is provided with an engaging projection 52 for applying a moving force to the relative position adjusting joint 63 of the opposing operating member 60 in the z-axis direction. The transmission connecting member 45 is disposed in the almost γ-axis direction and is recorded by the main moving connecting member 43 by a driving operation of the wire holding the horse 42 to vibrate the driven connecting member. With these configurations, when the wire grip motor 42 is driven, the driven coupling member 44 is vibrated by the vibration of the main moving coupling member 43 and the relative position of the operating member 60 is adjusted to the joint 63 via the engaging projection. The direction of finance is moving in 15 directions. Referring to Figures 8 to 14, the position detecting unit 46 is moved. In the sixth and seventh figures, the moving position detecting unit is not shown. The moving position detecting unit 46 includes a light emitting unit and a light receiving unit. The first and second state sensors 47, 48 for the presence-and-shield therebetween are disposed on the transmission coupling member 45 of the Y-axis moving mechanism 4! and have the first to third shielding regions 51-U, 5 lb, 51c shielding plate 51. The first to third shielding regions 51a, 51b, 51C6 are formed on the stalks e from a front end of the shielding plate 51. The first and second state sensors 47 48 are along A movement 26 200840901 of the shielding plate 51 is arranged. The first state sensor 47 is disposed on a rear side. Therefore, the state sensors 47, 48 are disposed in the almost Y-axis direction. The state sensors 47, 48 Each of the light receiving units is set to an ON state, a state in which the mask is present, and a QFF state, a state in which no mask is present, and a signal capable of identifying each state is output to the operation control unit 8〇. In terms, the shielding plate 51 is fixed and supported on the transmission link The member 45 passes through the light emitting unit and the light receiving unit for both the first and second state sensors 47, 48, and is provided with first to third shielding regions 51a, 51b, 51c 〇 10 as As shown in Fig. 8, when the wire holding tool 20 is placed at the needle bottom position, the first to third shielding regions 51a, 51b, 51c are configured not to shield any of the sensors 47, 48. In other words, when transmitting When the connecting member 45 and the engaging projection 52 move forward, if the first state sensor 47 is brought into the OFF state (unshielded state) and the second state sensor 48 is also brought into the OFF state, it can be detected. Arriving at the 15-needle bottom position. As shown in Fig. 10, when the wire holding tool 20 is placed in the in-line bending position, one of the first shielding regions 51a is shielded from any of the sensors 47, 48, and the second shielding is caused. The area 51b shields the first state sensor 48 and the third shielding area 51c shields the configuration of the first sensor 47. In other words, when the transmission connecting member 45 2〇 and the engaging protrusion 52 move back from the needle bottom position If the first state sensor 47 is brought into an ON state (shielded state) and the second state sensor 48 is also brought into an ON state The arrival line bending position can be detected. As shown in Fig. 12, when the wire holding tool 20 is placed in the standby position, one of the first shielding regions 51a is shielded from the second sensor 48, the second 27 200840901 The shielding area 51b does not shield any of the sensors 47, 48, and the third shielding area 51c does not shield the configuration of any of the sensors 47, 48. In other words, when the connecting member 45 and the engaging protrusion 52 are transmitted When moving from the needle bending position back, if the first state sensor 47 is brought into the OFF state and the second state sensor 48 is also brought into the ON 5 state, the arrival position can be detected.

As shown in FIG. 14, when the wire holding tool 2 is placed in the online relaxed position, one of the first shielding regions 51a is shielded from any of the sensors 47, 48 and the second shielding region 51b is not shielded and sensed. Any of the devices 47, 48, and the third shield region 51c shields the configuration of the sensor 47. In other words, when the transmission connecting member 45 10 and the engaging projection 52 move forward from the standby position, if the first state sensor 47 is brought into the ON state and the second state sensor 48 is brought into the 〇FF state. The arrival line can be detected to relax. The control by the operation control unit 80 for the γ-axis moving mechanism 41 will be described. The operation control unit 80 pre-stores an amount of rotation angle of the wire grip motor 42 useful for moving the wire holder 15 from the needle bottom position to the standby position and for moving the wire holding tool 2〇 from the standby position to the line to relax One of the positions is rotated by the amount of the angle, and the operation of the wire holding motor 42 is controlled by referring to the stored angular position when the wire holding jade 2G is to be placed at each position. 20: the moving wire holding motor refers to the needle bottom position 'When a main power supply of a main rib machine 100 is turned ON (ON), the operation control unit _ uses the moving position detecting component % to control one as a The initial position control portion is driven 42 to retrieve the needle bottom position and stand by in that position. And, after the start of the seam cutting, the first sewing is performed, and the operation control is controlled by the encoder of the sewing machine motor ω5 as the upper thread = 28 200840901 control portion to recognize that the needle 104 is pulled up and out of the cloth to The wire holding tool 20 is placed in the online bending position. In the line bending position, a slight gap is generated between the holding portion 21 of the holding member 22 and the flat portion 30 of the intermediate member 32. Therefore, by the pulling force of the wire picker 107, the slit start end portion 5 of the upper thread slides toward the needle 14 side while generating a sliding resistance between the holding portion 21 of the holding member 22 and the flat portion 30 of the intermediate member 32. Thereby, a holding length of the sewing start end portion of the upper thread can be reduced.

When it is detected that the needle 104 is slid out of the cloth by the encoder 105 of the sewing machine motor 1〇5 at the second stitching, a control is performed to place the wire holding tool 2〇10 in the standby position. Therefore, the holding portion 21 of the holding member 22 and the flat portion 3〇 of the intermediate member 32 are closed. Even if a pulling force of the wire picker 107 is subsequently received, the sewing start end portion of the upper thread is not slid but is held. 15 20 When the upper thread and the lower thread between the needle hole 108a and the inner shuttle 122 are butterflyed after being finally knitted - after being finally knitted, a thread is used to place the thread holding tool 2G in the online relaxed position. control. Unlike the standby position, the (4) loose position is placed in the closer position to the needle (four)%. Therefore, the 'spinning start end portion of the upper thread is generated between the in-line holding tool 2G and the pinhole application--rotation--rotation of the blade 36 which can cause the upper thread to not start the end portion into the wire cutting mechanism The upper end portion of the slit of the rotation of the cutter 136 of the shaft - the disposed cutter 136 and the upper thread in the line release position [relative operation member of the upper thread holding device] 29 200840901 The relative operation member 6 will be described with reference to Figs. Hey. The opposing operation member 60 includes a guide plate 0 which will serve as a guide member for reciprocally supporting the intermediate member 32 and the holding member 22 in the γ-axis direction, and will serve to bring the intermediate portion 31 and the holding portion 21 closer together. The tension spring 62 of the tension-energizing member between the intermediate member 32 and the holding member is always applied to the square 5 of each other, and the intermediate member 32 and the holding member 2 are engaged to enable the towel portion 31 and _ The portion 21 approaches and separates from each other corresponding to the posture change caused by its own vibrating action and is used to input a moving force to each of the moving positions of the wire holding tool 20 via the moving member 40! The relative position adjusting coupling member 63 a scarf moving plate portion 3i and a holding portion 21 for abutting against the relative position adjusting link member when the wire holding tool 2 is deflated from the wire and moved to the needle bottom position. The first-abutment member 64, and the second abutment member 65, which can be held constant by the relative position adjustment coupling member 63, becomes a sliding contact with the inclination of the relative position adjustment coupling member 6315, This maintains a tool holder wherein when the line 20 from the line release position when moved to a standby position that the intermediary portion 31 and the holding part 21 becomes a state of close contact with each other. The guide plate 61 is fixed to the upper portion of the bed portion 1〇3 behind the throat plate 1〇8. A term referring to the direction will be used to describe the portion of the opposing operating member 6'''''''''''' One of the guide grooves 66 in the Y-axis direction is disposed on an upper surface of the guide 61 in an intermediate position in the X-axis direction. The holding member 22 and the intermediate member 32 in the wire holding tool 2 are stacked in the guide groove 66 in a stacked state 30 200840901 in which the longitudinal directions are aligned with each other. A press plate 67 covers the retaining member 22 and the intermediate member 32 from above so as not to slip out of the guide groove 66. Therefore, the holding member 22 and the intermediate member 32 can be respectively introduced into the guide groove 66 and slidable in the Y direction. As described above, the holding member 22 and the intermediate member 32 are coupled to each other via the tension spring 5 yellow 62. Therefore, as long as no external force is applied, the members 22 and 32 each maintain a state in which the holding portion 21 and the intermediate portion 31 abut against each other. As shown in Figs. 9, 11, 3 and 15, the widths of the holding member 22 and the intermediate member 32 in the X-axis direction are different from each other. In order to clearly show a relative positional relationship between the respective members 22 and 32, it is shown as being different for convenience, and both the holding member 22 and the intermediate member 32 are actually set to be slidable therewith. One of the ranges is almost equal to one of the axial directions of the guiding groove 66. And the through holes 68, 69 are respectively disposed on both sides of the guiding groove 66 of the guide plate n interposed therebetween. The engaging pin % provided on the holding member 21 is fitted from the upper side and inserted into the through hole 68, and the engaging pin 39 of the intermediate member 32 is fitted and inserted into the through hole 69. Further, both of the through holes 68, 69 have a length in the γ-axis direction, which is set in a movement from the needle bottom position of the wire holding tool 2 to the standby position and a member of the holding member 22 and the intermediate member 32 therewith. The front and rear ends of the respective holes are not in contact with the contact pins 26, 39 during the relative movement. Further, the engaging pins 26, %, such as the insertion and insertion holes 68, 69, have a slight projection from the lower surface side of the guide plate 61 and are individually joined to the tip end portion of the relative position adjusting coupling member 。. (4) The position adjustment joint member 63 is provided with a rotary joint portion 70 including the retaining member 22, - a rotary joint portion 7 including the intermediate member 32, and a moving member interposed therebetween in a configuration including - longitudinal direction thereof The rotary joint portion 72 of 40. The ▲ 1 exact portion includes the rotary joint portion 7 of the holding member 22, and the position adjustment joint member 63_ is in the direction of the through hole and the 5 joint lock 26 is inserted therein. The intermediate member batch rotary joint portion (10) is included - the circular through hole is called the joint pin 39 inserted into the towel. The rotary joint portion 72 including the shaft member 4 is a φ-slot-shaped through hole in the phantom longitudinal direction of the relative position adjusting joint member and the engaging projection 52 is inserted therein.帛16® is an explanatory view of the relationship between the oscillation operation of the relative position connecting member 63 and the relative positional change of the holding member 22 and the intermediate member 32. In the photograph of Fig. 16, as long as the holding member 22 and the intermediate member 32 do not receive the external force, the abutment state of the holding portion 21 and the intermediate portion 31 is maintained by the tension magazine 62 as described above. This state is set to an on-line holding state. When the holding portion 15 21 and the towel portion 31_ are abutted against the (four), the joint faces 26, 39 are set so that the φ is placed in almost the same position in the z-axis direction. For this reason, the relative position adjustment of the engagement locks 26, 39 via the rotary joint portions 7A and 71 is adjusted to be in a normal state caused by the pulling force of the force (the solid line in Fig. 16) is maintained. In a state almost in the direction of the x-axis. In the -20 state, the 'counterclockwise direction' rotational force is added to the relative position adjustment joint member 63 along the circumference % of the joint projection 52, and the relative position is adjusted to be connected. The member 63 is oscillated to change the posture. At this time, a displacement is generated in the γ-axis direction above the rotary joint portion; Therefore, the external force in the direction in which the holding portion 21 and the intermediate portion 31 are separated from each other is applied between the holding member 32 200840901 member 22 and the intermediate member μ. For this reason, the holding portion and the intermediate portion η are separated from each other with respect to the pulling force of the tension spring 62 to perform the holding of the upper thread - the switching to the release state. • The first-abutment member 64 is described in accordance with Figures 9, 11 and 16. The first abutting member 5 when the wire holding tool 20 is placed at the needle bottom position causes a state in which the holding portion and the intermediate portion 31 are separated from each other, and when the wire holding tool moves the needle bottom position to the standby position, The solid portion 21 and the towel portion 31 are moved in the direction of each other, and the oscillating motion of the operation phase pure adjustment coupling member 63 abuts at least 10 of the needle bottom position with respect to the line relaxation position. Close to the position. In order to perform this operation, the first abutting member 64 is disposed such that the front portion between the rotational engaging portion 72 of the moving member 40 and the rotational engaging portion of the intermediate member 32 abuts against the position placed at the needle bottom position. The joint member 63 is adjusted. With this configuration, in the case where the moving member 15 is moved to the relative position adjustment link member 6 by the moving member Na, the wire holding tool 2 is placed in the position of the bottom position of the needle. A contact point of the abutting member 64 is set as a fulcrum such that the relative position adjusting joint member 63 oscillates against the tensile force of the tension spring 62. In this case, the rotary joint portion 71 of the intermediate member 32 is moved rearward and the rotary joint portion 2 of the holding member 22 is moved forward as compared with the abutment. Since the holding portion 21 moves forward through the holding member 22 and the intermediate portion 31 moves rearward via the intermediate member 32, for this purpose, it is brought into a state of being separated from each other (see the two-point chain line of Fig. 16). In this state, the knowledge of the upper line is inserted between the holding portion 21 and the intermediate portion 31. When the wire holding tool 20 moves backward from the needle bottom position, the relative position is adjusted. The & relying state of the first-abutment member 64 on the member 63 is gradually released. Therefore, the relative position adjustment coupling member 63 is rotated clockwise by the pulling force of the tension spring 62. For this reason, between the holding portion 21 and the intermediate portion 31. The split is closed, and the relative position adjustment link member 63 is rotated in the clockwise direction 5 until the abutment state of the first-abutment member 64 is completely released, and the intermediate portion 31 is moved forward via the intermediate member 32 and the holding portion 21 is passed through The holding member 22 moves rearward. • In the "Huibei target example, the portion between the holding portion 21 and the intermediate portion 31 is closed from a specific point when the engaging projection 52 moves rearward, and when the engaging projection 1052 moves further therefrom The closed state of the holding portion 21 and the intermediate portion 31 is maintained. In the sewing machine 1, a position at which the portion between the holding portion 21 and the intermediate portion 31 is first closed in the backward movement of the engaging projection 52 is set as the line relaxing position. Since the line bending position is set to the side where the portion between the holding portion 21 and the intermediate portion 31 is completely closed, it is set to a slightly relaxed position from the line. position. The second abutment member 65 will be described with reference to Figs. 11, 13, and 15. The second mitigating member 65 adjusts the oscillating action of the position adjusting coupling member 63 to maintain the holding state when the wire holding tool 20 is moved from the line releasing position to the standby position. '&> This operation is performed, and when the wire holding fixture 2G is moved from the wire releasing position to the standby position, the second abutting member 65 is configured to be from the X-axis direction for a region through which the relative position adjusting coupling member 63 moves. The - side becomes a sliding contact with the relative position adjustment joint member 63. 34 200840901 The second abutment member 65 has a smooth formation on the movable contact surface. At the side of the X-axis direction, a sliding contact portion of the month-adjusting joint member 63 is disposed at the end of the side of the joint member 63, and the portion 21 of the intermediate portion 31 and the intermediate portion 31 are abutted in the "parallel call": J: when: (four) adjustment The connecting member 63 reaches the line releasing position from the needle bottom position in a state in which it is rotated almost in the direction of the shirt axis, and therefore, the second === is in sliding contact with the sliding contact portion. Relaxing from the line: in the stroke, the sliding contact portion 63a_ is in the parallel state with the ::::: - the position from the first to the rest position, even if the member is not provided, the holding can be maintained. Part 21 and the intermediary part chat = page 62 of the state of tension closure. It is possible to prevent the grip portion 21 and the middle portion 31 from being opened due to the influence of the inertial force due to the rapid operation of the engaging projection 52. (4) [Arrangement of the holding portion and the intermediate portion in each of the moving positions] In the case where the wire holding tool 20 is placed at the position of the needle bottom, the direction in which the holding portion 21 and the intermediate portion 31 move is separated from each other as described above. When the bottom position « is read, the holding portion 2 is tenderly positioned in the needle (four) homening path, as shown in Fig. 8. The tip end portion of the portion of the portion of the portion of the knives 31 is positioned on the rear side of the straight line ^. The straight line is an upper end of the connecting bearing ring 128, two is a rear side portion of the inner shuttle 122 disposed on the rear side of the vertical movement path 针 of the needle 1Q4, and a lower end of the pinhole (10)a - rear side edge 35 200840901 The line of the edge portion (the position of one end on the - side in the x-axis direction of the circular pinhole when viewed from below). The tip end portion of the intermediate portion 31 is thereby set such that an upper loop formed by a first stitching in the sewing operation is caught by the hook 121 of the inner shuttle 122 and is divided by the line dividing portion 124b of the upper thread guide 124. In the case of the configuration of the dispersion (expansion), the tip end portion of the intermediate portion 31 becomes in contact with the upper line and thus the line division portion 124b can be prevented from disturbing the expansion of the loop. This can effectively prevent the upper thread from becoming in contact with the bearing ring surface 128. • The position of the holding portion 21 and the tip end position of the intermediate portion 31 are adjusted by the length and relative position of the holding member 21 and the intermediate member 32 in the γ-axis direction, and the abutment member 64 of the cymbal member 63 is abutted. It is determined by location. For example, if the abutment position of the first abutment member 64 is close to the rotational engagement portion 72 of the moving member 4, the position of the holding member 21 is placed closer to the front and the tip position of the intermediate blade 31 is placed later. Further, if the abutment position is close to the rotational joint portion 7 of the middle member 32, the position of the holding portion 21 is placed to be I5 later than the tip end portion of the tip end portion 31 is placed forward. • When the holding tool 20 reaches the line relaxed position from the needle bottom position, the holding knife 21 is placed against the flat portion 3 of the intermediate portion and continuously maintains the holding state at most until it is placed in a later standby position. Figures 10 and 11 show that the wire holding tool 20 is placed in the online bending position. The shape of the 2G towel L is shown in Figures 12 and 13 - the line holding tool 20 is placed in the standby position, and the 14th and 15th The figure shows a state in which the wire holding tool is placed in the online relaxed position. The relationship between the wire cutting mechanism 13 () and the state of the standby position and the state of the upper line in the line relaxation position will be described with reference to Fig. 17. B represents a button having at least 36 200840901 two holes and w represents a cloth (a workpiece), such as for the button to be sewn thereon. Figure 17A shows the line holding tool 2 〇 placed in the standby position and the line cutting mechanism 130 The moving knife is switched from a forward rotation to a configuration obtained at a time of 5 rotations. At this time, the initial start end portion of the upper thread is linearly stretched from the pinhole 108a to the tip end of the wire holding tool 2'', and the wire holder 20 is positioned so as to be very rearward for the moving blade 136. In other words, the standby position of the wire holding tool 2G is shaped such that at least the position of the moving knife 136 is separated. The manner of the sewing start end portion of the upper thread is not even if the moving knife 136 is rotated. Will be captured by the moving knife 136. Fig. 17B shows a configuration obtained by the line holding tool 2 moving from the standby position to the line releasing position and the moving knife 136 of the wire cutting mechanism 130 is switched from the forward rotation to the backward rotation. At this time, the seam starting end portion of the upper thread generates a slack between the pinhole 108a and the wire holding tool 2〇 for a position lower than the moving knife b 136, so that the seam starting end portion of the upper thread enters a A sector plane area for indicating the range of rotation of the moving knife 136. When the moving knife is rotated backward, for this purpose, the slit end portion of the upper thread is gripped by the moving knife 136 (Fig. nc) and is fed to the fixed knife 135 to cut the sewing start end portion of the upper thread. 20 stomach words, the line to relax the position needs to be - where the position of the upper end that can be cut is fixed 'more precisely, by the movement of the standby position - the loose line above the line, can cause the seam on the line The position of the starting end portion into the area on the plane represents the moving track of the moving knife 136. If only the beginning part of the upper line is cut, the line is relaxed to position 37 200840901, and 2^_ is advanced to meet the condition _. However, the length of the slack generated on the partial and self-retaining tool 20 5 10 = _ end portion needs to be == ... the length at which the knife start end portion is moved by the knives 136 that are moved by , , , , , and . - 疋 疋 135 135 ΓΓΓ 件 件 件 件 件 件 件 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ The movement direction of the money setting is opposite to each other (more desirably, opposite to each other)' and (2) the holding operation by the wire holding tool in the drawing is generated at the beginning end portion of the seam of the upper thread - the friction is at least A sustained pull equal to or less than the upper line. [Operation Control Unit] 15 操作 The operation control unit (10) is described with reference to Fig. 18. Figure 18 is a block diagram showing the control system of the slitting machine 100. The control unit 8 includes a CPU for performing different processing, in which different processes such as control and decision making are stored, and RAM is used as a working memory in different processes, and A 20 EEPROM in which different sewing materials are stored. The sewing machine motor 105, the encoder 1〇9, the wire holding motor 42, the first state sensor 47 and the second state sensor 48 of the moving position detecting member 46, and an s/S of the sewing machine 1 The start-stop switch 81, an operation panel 85 for inputting sewing setting conditions and selecting sewing data, an actuating motor 82 to be a driving source for wire cutting, and a cymbal for moving a workpiece 38 200840901 shaft motor The 83 and Y-axis motors 84 are coupled to the control unit 80 via a system bus bar and a drive circuit. The control unit 80 can recognize a rotation angle of the sewing machine motor 5 105 based on a pulse signal input from the encoder 109 provided on the wheel-out shaft of the motor 5 (). * and the control unit 80 can confirm the respective movement positions of the wire holding tool 2 based on the debt signal output from the first state sensor 47 and the second state sensor 48 in the moving position detecting component. Further, when a sewing start signal is input from the start switch 81, the control H) member 80 controls the driving operation of the wire grip motor 42 of the moving material 4 to move in accordance with the rotation angle of the slit machine motor 1〇5. One of the operating positions of the position detecting component is confirmed and identified or detected. [Explanation of Operation of Sewing Machine] The operation of the slitting machine (10) having the above configuration will be described with reference to Figs. Fig. 19 is a flow chart showing an operation control of the sewing machine. The following description is provided on the assumption that the number of stitches required for the stitching of the respective stitches and the stitches of the stitches are predetermined. The following processing is carried out by causing the CPU to execute a control program stored in the RQM of the control unit (10). First, when the control unit 80 receives an input while the S/S switch 81 is in an input waiting state (step S1), the actuating motor 82 is rotated to be positioned to perform a ''cloth retaining member', one down From the angle of motion, the cloth holding member 14 2 is moved downward to hold a cloth and a button (step S2). Then, by moving the position detecting unit 46, a 39 200840901 detection (a detection of an initial position) is performed (step S3). Whether the first-state sensing 1147 and the second state sensing 1148 are turned off when the wire holding motor u is driven in the direction in which the transmission coupling member 45 and the engaging projection 52 are moved forward. The position of the stylus bottom. To this end, the wire holding tool 2〇 can be disposed on the vertical movement path N of the needle 5 (see Figures 8 and 9). Next, the control unit starts driving the sewing machine motor 1〇5 (step S4). The control method of the driving operation of the yaw motor 83 and the Y-axis motor 84 is sequentially sewed by the respective sewing points determined by sewing. When the quilting machine motor 105 is driven, a first stitching is performed and the needle 1 〇4 1〇 is inserted into the pinhole 10a of the throat plate 108, and the upper thread passes between the holding portion 21 and the intermediate portion 31. Further, below the holding portion 21 and the intermediate portion 31, the upper loop formed on the needle 104 side is caught by the hook of the shuttle mechanism 12''. The upper loop is dispersed by the rotation of the upper wire guide 122 and the inner shuttle 122. At this time, the tip end portion of the interposing portion 31 is positioned sufficiently rearward. Therefore, the tip end portion of the intermediate portion 31 does not interfere with the amplification by the upper loop of the upper wire guide 124. For this reason, it is possible to prevent the upper wire from contacting the rear bearing ring surface 128. When the needle 104 in the first stitch is moved out of the cloth via the encoder 1〇9 of the sewing machine motor 105, the operation control unit 8 controls the wire holding motor 42 of the moving member 4 to move the wire holding tool 20 to The line bending position (step S5). When the wire holding motor 42 is driven in a direction to move the transmission coupling member 45 and the engaging projection 52 rearward from the needle bottom position, the first state sensor 47 and the second state sensor 48 are driven. Whether it is a flaw to detect the bending position of the line. To this end, the wire retaining tool 20 can be positioned in a line bending position (see Figures 10 and 11). 40 200840901 When the wire holding tool 2 is moved from the needle bottom position to the needle bending position, the seam start end portion of the upper thread is held by the wire holding portion. Move to the line bend position * After the 'up line' is taken up by the line take-up 111G7 (step S6). The online bending position, the portion 21 and the intermediate portion 3 i have a slight_. Therefore, the sliding of the holding portion 21 and the intermediate portion 31 simultaneously receives a specific force so that the length of the upper wire holding portion and the upper wire end can be as short as possible. After Φ Ik, when the encoder 1〇9 via the sewing machine motor 1〇5 indicates that the second one, the needle 104 in the middle of the year is removed from the out-of-the-box, the operation control unit 8 is controlled to the line_motor 42 of the moving member 1040. To move the wire holding fixture 2G to the standby position (step S7), when the wire holding motor 42 is driven in the direction in which the transmission coupling member 45 and the engaging projection 52 are moved backward from the line folding position, by The first state sense J 疋 〇 〇 ff and the second state sensor 48 is QN to detect the 15 life position. To this end, the wire retaining tool 20 can be positioned in a standby position (see Figures Φ 12 and 13). When the wire holding tool 20 is moved to the standby position, the wire tension solenoid 86 is controlled to lower the wire pulling force applied to the wire stretcher 6 to be lower than a normal sewing tension (step S8). ^ 20 Since the thread holding tool 20 is moved to the standby position, the sewing start end portion of the upper thread is pulled straight back from the needle hole l 8a. After the wire holding tool 20 is moved to the standby position, the upper wire is pulled up by the wire picker 1〇7 (step S9). In the standby position, the holding portion 21 and the intermediate portion 31 become in close contact with each other. Therefore, a nodule of the upper and lower lines is tightly tightened. 41 200840901 The grounding is tightened so that the seam is worn. Then, based on the sewing data, it is determined whether or not the next stitching is the final weaving (step S1G). If the next sewing is not the final weaving, the sewing operation is continuously performed according to the sewing information. 5 If the next stitch is the final weave, it is determined whether the upper shaft rotated by the sewing machine motor 105 is at the line cutting angle via the output of the encoder 10 9 (step SU). The wire cutting angle is such that the upper wire loop is caught by the needle 1 〇 4 and is sufficiently divided by the line dividing portion 124b into an angle of a line segment NB on the line side NF& 1. When the wire cutting angle is detected by the encoder 109, the operation control unit 8 is rotated to perform the first forward movement of the "moving knife", and the angle is actuated. The motor 82, wherein the moving knife 136 is rotated in a direction in which the self-fixing blade 135 is separated to take a line (step S12). Subsequently, after the sewing machine motor 1〇5 is stopped (step S13), the operation control 15 The member 80 is rotated to actuate the motor 82 in an orientation for performing a first forward movement of the moving knife, wherein the moving knife 136 is in a direction to return to the fixed knife 135. It is rotated. For this reason, the NB line segments of the upper and lower lines are cut (step S14). At this time, since the sewing start end portion which is not in line as shown in Fig. 17A is straightly stretched and stretched from the pinhole 1 〇 8 & backward, the upper thread can be prevented from being caught by the knife 136 which moves in the backward movement. Or cutting. After the wire is cut, the operating control member 8 is rotated to actuate the motor 82 at an angle for performing a "reciprocal rotation of the wire sweeping member", wherein the wire sweeping member below the needle 104 is thus rotated. To this end, the line segment 42 200840901 NF is pulled out of the cloth (S15). Then, the operation control unit 80 determines whether or not the stitching point of the first stitching is the same as the stitching point of the last knitting based on the selected sewing material (step S16). The stitching point of the 5 $-stitch is the same as the stitching point of the last knitting, and the process proceeds to step S18. If they are different from each other, the driving control of the cymbal motor phantom and the cymbal motor 84 is performed in such a manner that the cloth and the knuckle are moved to a position where the needle is disposed at the quilting point of the first quilting (step S17) and The process proceeds to step S18. 10 纟Step s 18 'The wire grip motor 4 2 that controls the moving part 4 被 is controlled to move the wire holding tool 20 to the line relaxed position. Whether the first state sensor 47 is ON and the second state sensor 48 when the wire holding motor 42 is driven in the direction in which the transmission coupling member 45 and the engaging projection 52 are moved forward from the standby position Whether it is 〇ff to detect the line release position. To this end, the wire holding tool 2〇 can be positioned in an online relaxed position (see Figures 14 and 15). When the wire holding tool 20 moves from the standby position to the line relaxed position, the line is on the line

It is relaxed between the needle hole test and the throat plate 1〇8 and the wire holding portion 2〇 as shown in the figure i7B. 2〇Operation control component 80 is a rotary actuating motor 82 to be positioned at an angle for performing a "moving knife-second forward motion," and further rotating the actuating motor 82 to perform "moving" One of the knives moves rearwardly, and the angle is positioned, wherein the moving knives 136 are thus moved back and forth. At this time, since the beginning end portion of the upper thread is relaxed downward, it is caught by the knife 136 which is moved by the rear rotation 44 200840901, and is pulled back (Fig. 17C). Therefore, the sewing start end portion of the upper thread is pulled out from the wire holding tool 2''. The sewing start end portion of the upper thread is cut between the blade portion *i36c of the moving blade 136 and the blade portion on the tip end of the fixed blade 135 (Fig. 17D). 5 The sewing start end portion of the upper thread is dropped and gathered inside a cover of the sewing machine. A detachable receiving tray can be specifically disposed in a bottom portion of the sewing machine. After cutting the sewing start end portion of the upper thread, the operation control member 8Q rotates the actuation motor 82 to perform a "lift" of the cloth holding member, the angle of which is positioned by 10, whereby the cloth holding member 142 is lifted and clothed And the button is released from the holding state (step S20). As described above, in the sewing machine 100, the sewing start end portion is held in the wire holding tool 20 before the final stage. Therefore, the case of releasing as in the middle can be effectively avoided. The condition of the bird's nest 15 is caused by the entanglement with the seam of the lower thread. After the final knitting, the wire holding tool 20 is moved from the standby position to the wire relaxed position and then the wire cutting mechanism 130 is operated. Therefore, the pinhole 108a is oriented toward the wire holding tool. The sewing start end portion of the upper line of 20 extends a slack and thus is suspended slightly below the pinhole 108a. Therefore, the knife 136 which is moved by the wire cutting mechanism 130 can cut the sewing start end portion. At this time, the upper thread The sewing start end portion is not released in the wire holding tool 20. Unlike the case where the wire suspended in the free state is subjected to cutting, the wire cutting is performed. The cutting mechanism 130 can perform the cutting operation well. If the stitching point of the first stitching is not coincident with the stitching point of the last knitting, the control unit 80 will be driven by the X-axis motor 83 and the pumping horse. Operate to move the needle just to be placed at the seam-sewed seam point, and then move the thread (4) tool 20 to the line-relaxed position. Therefore, it can cause - the basis on the cloth side of the beginning of the stitching of the upper thread The position approaches the pinhole of the throat plate. When the 5-wire holding tool 20 is moved to the line-releasing position, the seam-starting end portion of the upper thread can be more largely relaxed. Therefore, the starting end portion of the upper thread can be borrowed. The wire cutting mechanism 130 is more reliably cut. Further, the seam start end portion remaining on the upper side of the cloth side after the cutting operation can be more greatly shortened. 10 In the above sewing machine 100, the operation control member 80 is cut through the pinhole. The upper and lower lines between the 108a and the inner shuttle 122, and thereafter, the sewing start end portion of the upper thread is cut by a separate driving operation. However, the sewing start end portion passing through the pinhole and the inner shuttle 122 and the upper thread between The upper and lower lines can be cut in a single reciprocating rotation of the moving knife 136. In this example, the rotation of one of the predetermined directions of the actuating motor 82 is required to be performed in this order. "", "moving knife forward movement", "moving knife backward movement", "reciprocal rotation of the line sweeping member, and "lifting of the holding member" to set the cams 131, 143 shape. In this example, and, in step S11, steps S16 and S17 are performed, and after step S12 or S13, step S18 is performed, and step S20 is performed after step S15, and step S19 is not performed. The figure L is simple and clear] j Fig. 1 is a schematic side view showing the outline of a sewing machine with a part removed; 45 200840901 Fig. 2 is a display of the upper line as shown in a U direction of Fig. 8. 3 is a front view of an inner shuttle showing a shuttle mechanism as shown in the X-axis direction, 5 is a plan view showing a wire cutting mechanism; and FIGS. 5A to 5C are views showing a wire cutting mechanism An example of an operation; the 5A picture shows the standby position of the moving knife, the 5B picture shows the forward rotation state of the moving knife; and the 5C figure shows the backward rotation state of the moving knife; 10 Figure 6 FIG. 7 is an exploded perspective view showing the upper thread holding device; FIG. 8 is an exploded perspective view showing the upper thread holding device; FIG. 8 is a view showing the upper thread holding device as seen from the right side in the case where the one-line holding tool is placed in a needle bottom position; An illustration of the operation; Figure 9 is an illustration of the operation of the upper wire holding device as shown in the lower part of the case where the wire holding tool is placed in a needle bottom position; Fig. 10 is a view of the wire holding tool placed in the figure One-line bending position An illustration of the operation of the upper wire holding device as seen from the right side in the case of the case; Fig. 11 is an explanatory view showing the operation of the upper wire holding device as seen from the lower part in the case where the wire holding tool is placed in the bent position of the wire 20 Fig. 12 is an explanatory view showing the operation of the upper thread holding device as seen from the right side in the case where the wire holding tool is placed in a standby position; Fig. 13 is a view of placing the wire holding tool in the standby position; An illustration of the operation of the upper wire holding device as seen from the lower part in the case; Fig. 14 is a case where the wire holding tool is placed in a relaxed position in the line 46. The description of the operation of the upper wire holding device as seen from the right in the example of 200840901 Fig. 15 is an explanatory view showing the operation of the upper thread holding device as seen from the lower portion in the case where the wire holding tool is placed in the online relaxed position; Fig. 16 is a view showing a relative position adjusting and connecting machine 5 as seen from below. An illustration of a relationship between an oscillating operation and a relative positional change of a holding member and an intermediate member; FIGS. 17A through 17D are An explanatory diagram showing an operation showing a relationship between the wire cutting mechanism and a state in which one of the standby position and the line relaxing position is on the line; 10 FIG. 17A shows a knife moving in one of the standby positions of the wire holding tool a state of a cutting operation; FIG. 17B shows a state in which one of the moving knives in the line relaxing position of the wire holding tool is rotated forward; FIG. 17C is a view showing the moving knives 15 in the wire relaxing position of the wire holding tool a state of being rotated backward; and a 17D drawing showing a state in which one of the sewing start end portions of the upper thread is cut and a state in which the moving knife in the line releasing position of the thread holding tool is rotated backward; FIG. 18 is a view showing the sewing machine A block diagram of a control system; 20 Figure 19 is a flow chart showing an operation of the sewing machine. [Main component symbol description] 47.. First state sensor 48.. Second state sensor 81... Start/stop switch 47 200840901 85.. Operation panel 86.. Line tension solenoid 80 .. . Control unit 105.. Sewing machine motor 109.. Encoder 42.. Line holding motor 82.. Actuating motor 83.. X-axis motor 84.. . Y-axis motor SI, S2 S3, S4, S5, S6, S7, S8, S9, S10, S11, S12, S13, S14, S15, S16, S17, S18, S19, S20···

48

Claims (1)

200840901 X. Patent application scope: 1. A sewing machine comprising: an upper thread holding device operable to hold and release a sewing start end portion of an upper thread under a throat plate; a shuttle mechanism on the throat plate Catch the upper line below a pinhole to entangle the line with it; and 10 15 a one-line cutting mechanism that cuts a pinhole passing through the throat plate and an upper thread and a lower thread of the shuttle mechanism, wherein a button (B) is sewed by an alternate stitch between at least two holes of the button a workpiece (W) characterized in that the upper wire holding device comprises a wire holding tool movable along a lower surface of the throat plate at a needle bottom position at a position along which a needle is moved along the line and - as the standby position from the position where the needle bottom position is removed, wherein #the line is fixed and the line holding tool is in the line release state t' and the incumbent_卫具自- When the middle position is moved to the position of the scale, it is brought into a line holding state, wherein the position is to be light _, and the towel _ is located at the bottom of the needle = the city advance - step package casting control (four) pieces, the shooting operation is: "The needle is placed in the needle-weaving through the holding tool at the position of the needle bottom ... in the last _ at least through the workpiece (w) to maintain the line holding tool at the standby I, the last After the off, the Wei line _ tool from the standby position; and thereafter, actuate the A cutting mechanism for cutting the sewing start end portion of the = 49 200840901. 2. The sewing machine of claim 1, wherein the operation control member is further operable to actuate the needle cutting mechanism (130) simultaneously after the last stitching Maintaining the wire holding tool in the standby position to cut the upper and lower lines between the pinhole passing through the throat plate and the shuttle mechanism, and then moving the wire holding tool to the intermediate position to cut the sewing of the upper thread The sewing machine of claim 1, wherein the operation control member is operable to cut the pinhole through the throat plate by a single actuation of the wire cutting mechanism after the final stitching The sewing machine of any one of claims 1 to 3, further comprising a moving mechanism that holds and moves the workpiece (w) to set the needle to one a predetermined position, wherein 'in the first-stitched-stitched point and the last stitched-stitched point are not coincident with each other, the operational control unit is further operable to control the Mechanism to locate the guard element (w) whereby, after the last of the sewing line but that the needle holding tool before the move to the first intermediate position is provided in the sewing sewing point 50