CN104005189A

CN104005189A - Double-needle sewing machine

Info

Publication number: CN104005189A
Application number: CN201410064631.XA
Authority: CN
Inventors: 山岸正则; 安田俊介
Original assignee: Juki Corp
Current assignee: Juki Corp
Priority date: 2013-02-25
Filing date: 2014-02-25
Publication date: 2014-08-27
Anticipated expiration: 2034-02-25
Also published as: CN104005189B; JP2014161461A; KR20140106432A; JP6031380B2

Abstract

The invention discloses a double-needle sewing machine, which can detect movement of a sewing thread passing through a needle pole in motion or a static needle pole so as to detect abnormal conditions. The double-needle sewing machine (100) is switched to drive any one of two needle poles (110, 120) through an operation or setting and sewing through a needle (11, 12) of the selected needle pole. Two broken thread sensors (161, 162) are arranged in the double-needle sewing machine. The two broken thread sensors select and drive the sewing needle (11) of one needle pole (110) in an opposed way and stop driving the sewing needle (12) of the other needle pole , and further detect the motion of threads (U1, U2) respectively supplied by the two needle poles. A control device (90) of the sewing machine can judge the motion state of the double-needle sewing machine on the basis of the driving states of the two needle poles and the motion combination of the threads respectively detected by the two sensors.

Description

Two-needle sewing machine

Technical field

The present invention relates to a kind of two-needle sewing machine.

Background technology

Current, known a kind of two-needle sewing machine, it can switch, and is making 1 needle bar action of middle use so that have in bottom in 2 needle bars of suture needle, thus expect make (for example,, with reference to patent documentation 1).

In this Sewing machines, in the suture needle having at each needle bar, for example, through the different 2 kinds of sutures (suture of different colours and the suture of different thicknesses) of characteristic, select some needle bars, this needle bar is moved and make.

In addition, the suture passing in the suture needle of the each needle bar in this Sewing machines, is supplied with from bobbin by thread path separately, and on each thread path, disposes the line detecting sensor that the movement of suture is detected.Do not move and the situation of not carrying out suture supply detects at this line detecting sensor line when making, in the case of detecting the abnormal generation of broken string or wire jumper etc., the control device of Sewing machines stops the action of Sewing machines, prevents the generation of poor stitching quality.

Patent documentation 1: TOHKEMY 2010-12271 communique

But, the in the situation that of above-mentioned prior art, by utilizing line detecting sensor to detect the movement of the line passing, thereby can detect the abnormal generation such as broken string or wire jumper of the suture needle side of the needle bar of action in the suture needle of a selected needle bar.But, owing to existing the line passing in the suture needle of another needle bar in action stops not to making middle supply, mobile this prerequisite, thus cannot detect the movement of this suture, and for the control of Sewing machines.

Its result, the suture passing in the suture needle of another needle bar in action stops, being wound around and sewing up with needle bar or its suture in action, produces poor stitching quality.In addition, produce 2 sutures threading mistakenly, thus the poor stitching quality made from the line different from object line.

Summary of the invention

The object of the invention is, provide a kind of movement to the suture passing in action and in the needle bar moving in stopping to detect, thereby can detect various abnormal technology.More particularly, provide a kind of sewing up of the suture passing in suture needle in action stops detected, or the technology that the backward error of threading is detected.

According to the 1st mode of the present invention,

A kind of two-needle sewing machine, it switches to any one needle bar in 2 needle bars is driven by operating or setting, and the suture needle that utilizes the needle bar of selecting to have is made,

It is characterized in that having:

The first line-breakage sensor, the action of reaching the standard grade that the suture needle of a needle bar of its subtend is supplied with detects;

The second line-breakage sensor, the action of reaching the standard grade that the suture needle of its another needle bar of subtend is supplied with detects;

Control module, the combination of its driving condition based on described 2 needle bars and the action of reaching the standard grade separately that detected by described the first line-breakage sensor and described the second line-breakage sensor, judges the running-active status of this two-needle sewing machine; And

Memory cell, it stores multiple unusual patterns of making, the plurality of combination of making the action of reaching the standard grade separately that the driving condition of unusual pattern based on described 2 needle bars and described the first line-breakage sensor and described the second line-breakage sensor can detect,

Described control module is made in unusual pattern one when consistent in described memory cell in the running-active status of described two-needle sewing machine with being stored in, the running-active status that is judged as this two-needle sewing machine be make abnormal.

According to the 2nd mode of the present invention, it is characterized in that, in above-mentioned two-needle sewing machine,

Have setup unit, it is multiple the making in unusual pattern being stored in described memory cell, selects and set the unusual pattern of making as the judgement object of the running-active status of this two-needle sewing machine,

Described control module, the running-active status of described two-needle sewing machine be with set by described setup unit make the consistent situation of unusual pattern time, the running-active status that is judged as this two-needle sewing machine be make abnormal.

According to the 3rd mode of the present invention, it is characterized in that, in above-mentioned two-needle sewing machine,

Described control module, is to make when abnormal in the running-active status that is judged as this two-needle sewing machine, and this two-needle sewing machine is stopped.

According to the 4th mode of the present invention, it is characterized in that, in above-mentioned two-needle sewing machine,

It is abnormal that what described control module judged make, and comprises and reaching the standard grade of passing in the suture needle in action stops sewed up and at least one in detecting of the backward error of threading.

According to the 5th mode of the present invention, it is characterized in that, in above-mentioned two-needle sewing machine,

Have display part, the running-active status of its this two-needle sewing machine that described control module is judged shows.

The effect of invention

According to the present invention, the movement of the line passing in action and in the needle bar moving in stopping is detected, can extremely detect the various of two-needle sewing machine.More particularly, can detect sewing up of the line passing in the suture needle in action stops, or the backward error of threading is detected, therefore, can reduce poor stitching quality.

Brief description of the drawings

Fig. 1 is the oblique view of the Sewing machines of working of an invention mode.

Fig. 2 is the amplification oblique drawing that represents the facial periphery of Sewing machines.

Fig. 3 is the amplification oblique drawing from the facial periphery of the direction observation different from Fig. 2.

Fig. 4 is the oblique view that is contained in the internal structure of the inside of the facing side leading section of Sewing machines arm.

Fig. 5 is the front view of needle bar switching mechanism.

Fig. 6 is the oblique view of needle bar switching mechanism.

Fig. 7 cuts 2 needle bars and represents the profile of the structure of inner needle bar stop.

Fig. 8 is the exploded perspective view that represents to switch the camshaft of drive division and the connecting state of needle bar pedestal.

Fig. 9 is the front view of line holding device.

Figure 10 is the oblique view of line holding device.

Figure 11 is the block diagram that represents the control system of Sewing machines.

Figure 12 (A) represents the front view using the suture needle of the needle bar of a side as the needle bar switching mechanism of the state of selecting making the suture needle of middle use, and Figure 12 (B) is the front view representing using the suture needle of the needle bar of opposite side as the needle bar switching mechanism of the state of selecting making the suture needle of middle use.

Figure 13 is the key diagram of an example of the combination of the signal that represents that the first line-breakage sensor and the second line-breakage sensor detect.

Figure 14 is an example of the combination of the signal that detects of the first line-breakage sensor and the second line-breakage sensor, is to represent to become to judge whether the running-active status of Sewing machines is the key diagram of making the table of abnormal benchmark.

Figure 15 is the flow chart that represents the running-active status judgement processing of Sewing machines.

Figure 16 represents to become to judge whether the running-active status of Sewing machines is the key diagram of making other table of abnormal benchmark.

Figure 17 is the front view of other embodiments that are pressed into projection of changer lever.It is the key diagram that represents the variation of changer lever.

Figure 18 is the oblique view of other embodiments of line holding device.

Figure 19 is the partial enlarged drawing of other embodiments of line holding device.

Figure 20 is the details drawing from other embodiments of Y-direction observation line holding device.

The explanation of symbol

21 sewing machine electromotors

Axle on 22

25 needle bars are clasped portion

30 needle bar switching mechanisms

31 needle bar pedestals

32 needle bar stops

33 stop selection portion

34 switch drive division

70 guidance panels (setup unit, display part)

90 control device (control module, setup unit)

91 CPU

92 ROM

93 REAM

94 data storages (memory cell)

100 Sewing machiness

11,12 suture needles

110,120 needle bars

14 Libra mechanisms

161 first tangent line sensors

162 second tangent line sensors

19 winding mechanisms

U1 reaches the standard grade

U2 reaches the standard grade

Detailed description of the invention

［ summary of embodiment ］

Based on Fig. 1～Figure 20, embodiments of the present invention are described.

The two-needle sewing machine 100(recording as present embodiment is hereinafter referred to as Sewing machines 100) be so-called electronic cycle sewing machine, there is the holding frame as cloth maintaining part, this holding frame keeps the cloth as the sewn object of making, this Sewing machines 100 is by this holding frame is relatively moved with respect to suture needle, thereby on the cloth being held in holding frame, forms the tailoring pattern of the stitch data based on regulation.In addition, this Sewing machines 100 has 2 needle bars 110,120, can needle bar 110,120 be switched and optionally be used.Thus, for example, can in the suture needle 11,12 being installed on each needle bar 110,120, insert respectively two kinds of U1 that reach the standard grade, U2 that the characteristic such as color and thickness is different, utilize two kinds of formation tailoring patterns of reaching the standard grade.

Fig. 1 is the oblique view of Sewing machines 100 involved in the present invention, and Fig. 2 is the amplification oblique drawing that represents face 105 peripheries of Sewing machines 100, and Fig. 3 is the amplification oblique drawing of face 105 peripheries observed from the direction different from Fig. 2.

, vertical above-below direction is defined as to Z-direction here, the horizontal direction orthogonal with it is defined as to X-direction (left and right directions), will be defined as Y direction (fore-and-aft direction) with Z-direction and the two orthogonal horizontal direction of X-direction.

Above-mentioned Sewing machines 100 has: 2 needle bars 110,120, and it keeps respectively suture needle 11,12 in bottom, and moves up and down; Suture needle reciprocating mechanism 20, it moves up and down suture needle using sewing machine electromotor 21 as drive source; Needle bar switching mechanism 30, it switches, so that any one in 2 needle bars 110,120 moves up and down action; Line adjuster 131～133, it is to passing respectively the U1 that reaches the standard grade of suture needle 11,12, the line tension that U2 applies regulation; Libra mechanism 14, it is with the reach the standard grade lifting of U1, U2 of the cycle identical with needle bar 110,120; Line holding device 60, it optionally keeps reach the standard grade U1 or U2 through the suture needle 11 or 12 that stops moving up and down; There is the not shown container mechanism of single still, this still make to roll off the production line (omitting diagram) be wound around with reach the standard grade U1 or U2 through suture needle 11 or 12; As the cloth travel mechanism 80 of travel mechanism, it keeps the cloth as sewn object, at random moves and locates along X-Y plane; Sewing machine stand 101, its each structure to Sewing machines 100 supports; Middle presser feet 15, it moves up and down and suppresses the cloth causing due to the pin that falls; The first and second line-breakage sensors 161,162 of extracting detecting unit as the first and second lines out, it detects the extraction that has or not reach the standard grade U1 and U2 respectively; Thread end clamping device 18, its end to reach the standard grade U1 or the U2 that hang down from suture needle 11 or 12 keeps; Winding mechanism 19, it will roll off the production line and be wound on bobbin; Guidance panel 70, operating personnel utilizes this guidance panel 70 to carry out various operations and the input of various data etc. to Sewing machines; And as the control device 90 of action control unit, it carries out the action control of above-mentioned each structure.

［ sewing machine stand ］

As shown in Figure 1, Sewing machines 100 have from X-direction observe profile be the roughly sewing machine stand 101 of コ word shape.This sewing machine stand 101 has: Sewing machines arm 102, and it forms the top of Sewing machines 100, extends along Y direction; Sewing machine base portion 103, it forms the bottom of Sewing machines 100, extends along Y direction; And longitudinal body portion 104, it links Sewing machines arm 102 and sewing machine base portion 103.

［ cloth travel mechanism ］

As shown in Figure 1, cloth travel mechanism 80 has: holding frame 81, and its upper surface in sewing machine base portion 103 keeps sewn object; Support arm 82, it liftably supports holding frame 81; X-axis motor 83(is with reference to Figure 11), it makes holding frame 81 move along X-direction via support arm 82; And Y-axis motor 84(is with reference to Figure 11), it makes holding frame 81 move along Y direction via support arm 82.

Cloth travel mechanism 80, by said structure, can make sewn object move and locate to the optional position of X-Y plane via holding frame 81, can be for each pin and the pin that falls on position arbitrarily, can freely form stitching.

［ suture needle reciprocating mechanism ］

Fig. 4 is the oblique view that is contained in the internal structure of the inside of the face 105 side leading sections of Sewing machines arm 102.

As shown in the figure, suture needle reciprocating mechanism 20 has: upper axle 22, and it is rotatably supported with the state along Y direction in above-mentioned Sewing machines arm 102; Sewing machine electromotor 21(is with reference to Figure 11), its end from upper axle 22 applies revolving force; Counterweight 23, it is arranged on the other end of axle 22; Toggle-action lever 24, it can link an end in the position of the pivot bias from counterweight 23 around Y-axis rotatably via not shown needle bar crank; And needle bar clasps portion 25, it optionally keeps needle bar 110 or 120.

Above-mentioned suture needle reciprocating mechanism 20, rotates upper axle 22 by the output of sewing machine electromotor 21, by counterweight 23, needle bar crank and toggle-action lever 24, spinning movement is transformed to and moves up and down action.And, can clasp some needle bars 110 or 120 that portion 25 keeps to needle bar and apply and move up and down action.

In addition, clasp the link structure between portion 25 and each needle bar 110,120 for needle bar, describe in the back.

［ Libra mechanism ］

Libra mechanism 14 has as shown in Figure 4: the Libra 141 of bell crank shape, its at one end portion be formed with the through wires hole that make to reach the standard grade U1, U2 insert respectively; And Libra crank 142, it free to rotate is supported on sewing machine stand by axle Sewing machines arm 102 is interior.In addition, the base end part of Libra 141 is supported on counterweight 23 free to rotately, and the pivoting end of the pars intermedia of base end part and leading section and Libra crank 142 links.Thus, if upper axle 22 rotates, the base end part of Libra 141 is rotated, by and Libra crank 142 between link, the leading section of Libra 141 carries out the action that moves up and down of regulation that speed is different in the mode of vertical motion and down maneuver.

［ the first and second line-breakage sensors and line adjuster ］

In the case of using the face of Sewing machines arm 102 105 as positive, as shown in Figure 2, never illustrated coil holder is extracted out the U1 that reaches the standard grade, U2, utilize the multiple line guide portion 171,172 that arrange on the face of the right side of Sewing machines arm 102, forms suture path separately.And, in this suture path midway, configure according to priority the first and second line-breakage sensors 161,162, line adjuster 131～133, Libra 141, through the U1 that reaches the standard grade, the U2 of these parts, the line holding device 60(arranging through the downside at face 105 is with reference to Figure 11), be directed to suture needle 11,12 separately.

In the first line-breakage sensor 161, insert the U1 that reaches the standard grade, in the second line-breakage sensor 162, insert the U2 that reaches the standard grade.In addition, above-mentioned line-breakage sensor 161,162 has the optical pickocff being made up of light source and photo detector reaching the standard grade on the position that U1, U2 passed through, can be according to the detection signal from photo detector, which kind of state to the U1 that reaches the standard grade, U2 in moving or stopping detects.In addition, the first line-breakage sensor 161 detects the movement of the U1 that reaches the standard grade, and the second line-breakage sensor 162 detects the movement of the U2 that reaches the standard grade.

For example, the U1 that reaches the standard grade, U2 in making with suture needle 11,12(needle bar 110,120) move up and down the mode being connected, cycle with regulation repeatedly moves and stops, therefore, by making 161,162 pairs of line-breakage sensors repeatedly send with the mobile connection signal accompanying with the signal that stops cut-off signal together and detect with specified period, thereby can detect the situation of conventionally making.

; the line-breakage sensor 161,162 detecting in the action of the U1 that reaches the standard grade, U2 in making; the on/off signal repeatedly sending with specified period do not detected; and connection signal or cut-off signal only detected; or detect in the situation of on/off signal that is not specified period, anticipation has occurred to make abnormal.

In addition, owing to not being that the U1 that reaches the standard grade, U2 in making is not drawn out of and stops, so detect constantly and stop this situation of cut-off signal together according to line-breakage sensor 161,162, can detect reach the standard grade not abnormal.

That is, to not being that the line-breakage sensor 161,162 that the action of the U1 that reaches the standard grade, U2 in making detects does not detect lasting cut-off signal, and connection signal detected, thereby detect in the situation of the action of reaching the standard grade, anticipation has occurred to make abnormal.

In addition, for utilizing the first line-breakage sensor 161 and the second line-breakage sensor 162 to detect the action of the U1 that reaches the standard grade, U2, thereby judge the control of the running-active status of Sewing machines 100, describe in the back.

On on-line control device 131, set up the U1 that reaches the standard grade, on on-line control device 132, set up the U2 that reaches the standard grade, on the above-mentioned U1 of reaching the standard grade, U2, apply respectively line tension.

In addition, line adjuster 133 is shared by the U1 that reaches the standard grade, U2, and the U1 that reaches the standard grade, U2 are applied to identical line tension.

Above-mentioned Libra 141 is configured to, and its leading section is from outwards portion's protrusion of right side face of Sewing machines arm 102, and the U1 that reaches the standard grade, the U2 that set up on online adjuster 133 are inserted into through wires hole separately.

［ needle bar switching mechanism: entirety ］

Fig. 5 is the front view of needle bar switching mechanism 30, and Fig. 6 is oblique view.Needle bar switching mechanism 30 has: needle bar pedestal 31, and it can support 2 needle bars 110,120 up or down; Back-up block 35, near its upper support needle bar pedestal 31 face 105 of Sewing machines arm 102; Needle bar stop 32,32(are with reference to Fig. 7), it can switch to needle bar 110,120 with respect to the hold mode (moving up and down operating state) of needle bar pedestal 31 and clasp the hold mode (top dead center position halted state) of portion 25 with respect to needle bar; Stop selection portion 33, it carries out the switching action of hold mode to each needle bar stop 32,32; And switching drive division (switching-driving device) 34, it makes the suture needle 11 or 12 of the needle bar 110 or 120 that will use carry out aligned in position with the sewing position specifying.

［ needle bar switching mechanism: needle bar pedestal ］

Needle bar pedestal 31 forms following parts: along being arranged above and below and the upper mass 311 that separates and bottom piece 312, the bridging portion 313 linking with the state being erected on them and the tabular support portion 314 of further extending upward from the upper surface of upper mass 311.

In addition, needle bar pedestal 31 is supported in the following manner,, can run through the back shaft 315 in the supported hole of formation via being inserted on support portion 314 along Y direction that is, utilizes back-up block 35 to swing around Y-axis.In addition, back-up block 35 utilizes not shown screw to be fixed on Sewing machines arm 102.

Upper mass 311 and bottom piece 312 utilize bridging portion 313 to configure along being arranged above and below with the separating distance of fixing, in above-mentioned upper mass 311 and bottom piece 312, be all formed with the state running through up and down needle bar patchhole 316,316 and needle bar patchhole 317,317 that needle bar 110 and 120 is inserted.

Needle bar patchhole 316,316 and needle bar patchhole 317,317, all run through formation along the length direction of needle bar pedestal 31.Therefore,, the attitude parallel with Z-direction at the length direction of formation needle bar pedestal 31, each needle bar patchhole 316,316 and each needle bar patchhole 317,317 all become the state parallel with Z-direction.

In addition, above-mentioned patchhole is divided into and is formed as, the needle bar patchhole 316 of a side and the needle bar patchhole of a side 317 be with one heart and diameter identical, and, the needle bar patchhole 316 of opposite side and the needle bar patchhole 317 of opposite side be also concentric and diameter identical.

In addition, for the needle bar 110 of a side, its upper support is on the needle bar patchhole 316 of a side, and its underpart is supported on the needle bar patchhole 317 of a side.In addition, for the needle bar 120 of opposite side, its upper support is on the needle bar patchhole 316 of opposite side, and its underpart is supported on the needle bar patchhole 317 of opposite side.

In addition, above-mentioned needle bar patchhole 316,316 and needle bar patchhole 317,317, all side is provided with not shown sliding bearing therein, and needle bar 110,120 separately can successfully move up and down., needle bar pedestal 31 can support 2 needle bars 110,120 up or down.

［ needle bar switching mechanism: needle bar stop ］

The inside of needle bar 110 and needle bar 120 all becomes the tubulose of hollow, contains the structure of a part for needle bar stop 32 in above-mentioned inside.Fig. 7 cuts each needle bar 110,120 and represents the profile of the structure of inner needle bar stop 32.

Each needle bar stop 32 can switch to each needle bar 110,120 with respect to the hold mode of needle bar pedestal 31 and clasp the hold mode of portion 25 with respect to needle bar.In addition, the selection portion 33 that stops described later, by the peripheral operation that each needle bar stop 32 is specified, the first selection mode and the second selection mode are switched, thereby can optionally only make the needle bar 110 or 120 of a certain side move up and down, wherein, in this first selection mode, making the needle bar 110 of a side remain on needle bar clasps in portion 25, and the needle bar 120 that makes opposite side remains on needle bar pedestal 31, in this second selection mode, the needle bar 110 of one side is remained on needle bar pedestal 31, and the needle bar 120 that makes opposite side remains on needle bar and clasps in portion 25.

The needle bar stop 32 arranging on needle bar 110 and needle bar 120 respectively, is identical structure.In addition, pin manhole appendix 111, upside spheroid manhole appendix 112 and downside spheroid manhole appendix 113 corresponding with needle bar stop 32 and that on needle bar 110, arrange, the pin manhole appendix 121, upside spheroid manhole appendix 122 and the downside spheroid manhole appendix 123(that on needle bar 120, arrange all describe in the back), be identical structure each other.

Therefore, only the needle bar stop 32 of needle bar 110 sides is described, omit the explanation of the needle bar stop 32 of needle bar 120 sides.

Needle bar stop 32 has: stop rod 321, it is inserted into the inside of the tubulose of needle bar 110; Press pressing spring 322, its inside at needle bar 110 will stop rod 321 and press upward; Needle bar drives spheroid 323 and needle bar to stop spheroid 324, and it can be chimeric respectively with upside spheroid manhole appendix 112 and downside spheroid manhole appendix 113 that formation is run through to outer peripheral face in the inside from needle bar 110; And retainer 325, it is clasped portion 25 with respect to needle bar and falls and be fixedly mounted in the periphery of needle bar in order to prevent needle bar 110.

The above-mentioned rod 321 that stops, end is formed with the pin shape portion 321a less with other position phase diameter groups that stop rod 321 thereon, by utilizing the pressing upward of realizing by pressing spring 322, when common, the pin shape 321a of portion is protruded above outside from the pin manhole appendix 111 forming in the upper end of needle bar 110.

In addition, stop rod 321 and on upper and lower 2 positions, be formed with the first and second 321b of grooved cam portion, 321c.The above-mentioned grooved cam 321b of portion, 321c are formed as, diameter is less than other positions that stop rod 321, the first 321b of grooved cam portion that is positioned at upside forms cone shape tapered portion in the lower inside of groove, and the second 321c of grooved cam portion that is positioned at downside forms cone shape tapered portion in the inside upper part of groove.

In addition, in the space separately forming between the inside of needle bar 110 wall and each grooved cam 321b of portion, 321c, contain respectively needle bar and drive spheroid 323 and needle bar to stop spheroid 324.

In addition, on the position that needle bar driving spheroid 323 in the first 321b of grooved cam portion that is contained in needle bar 110 is faced, be formed with the upside spheroid manhole appendix 112 running through to outside from inner side, needle bar in the second 321c of grooved cam portion that is contained in needle bar 110 stops, on position that spheroid 324 faces, being formed with the downside spheroid manhole appendix 113 running through to outside from inner side.

Upside spheroid manhole appendix 112 drives spheroid 323 large in the inside diameter of needle bar 110 than needle bar, and along with reduced toward the outer side, at the outer peripheral face of needle bar 110, diameter is smaller compared with driving spheroid 323 with needle bar.In addition, the internal diameter of downside spheroid manhole appendix 113 and needle bar stop spheroid 324 and also become the same relation.

In addition, stopping, the state of rod 321 the pin shape 321a of portion in protruding is to greatest extent (following, referred to as " protruding state ") time, in the following manner configuration is set,, with respect to upside spheroid manhole appendix, 112, the first 321b of grooved cam portion are positioned at upside slightly, and the second 321c of grooved cam portion becomes the position consistent with downside spheroid manhole appendix 113.Under this state, needle bar drives spheroid 323 to become the state that a part is protruded from upside spheroid manhole appendix 112, and needle bar stops spheroid 324 and becomes the state (with reference to the needle bar 120 of Fig. 7) retreating to the inside from downside spheroid manhole appendix 113.

In addition, for example, if the pin shape 321a of portion that stops rod 321 (is pressed into, half～total length left and right of the protrusion length of the pin 321a of shape portion: hereinafter referred to as " being pressed into state "), the first 321b of grooved cam portion becomes the position consistent with upside spheroid manhole appendix 112, with respect to downside spheroid manhole appendix, 113, the second 321c of grooved cam portion become the state of downside slightly that is positioned at.Under this state, needle bar drives spheroid 323 to become the state retreating to the inside from upside spheroid manhole appendix 112, and needle bar stops spheroid 324 and becomes the state (with reference to the needle bar 110 of Fig. 7) that a part is protruded from downside spheroid manhole appendix 113.

In addition, be positioned at top dead centre height at needle bar 110, when needle bar is clasped portion 25 and is also positioned at top dead center position, if make the pin shape 321a of portion that stops rod 321 become protruding state, can utilize the needle bar that a part is protruded from upside spheroid manhole appendix 112 to drive spheroid 323 and retainer 325, needle bar is clasped to portion 25 along sandwiching up and down.Thus, can make needle bar 110 form the hold mode of clasping portion 25 with respect to needle bar, the action that moves up and down from suture needle reciprocating mechanism 20 can be transmitted to needle bar 110.

In addition, be provided with spheroid retainer 326 at the upper surface of the bottom piece 312 of needle bar pedestal 31, if there is projection on the outer peripheral face of needle bar 110, become the structure that stops needle bar 110 to decline with respect to needle bar pedestal 31.But due in the time that the pin shape 321a of portion is protruding state, needle bar stops spheroid 324 and retreats to the inner side of downside spheroid manhole appendix 113, so can not limit needle bar 110 moving up and down with respect to needle bar pedestal 31.

Therefore, needle bar 110 becomes the operating state moving up and down.

On the other hand, be positioned at top dead centre height at needle bar 110, when needle bar is clasped portion 25 and is also positioned at top dead center position, if make the pin shape 321a of portion that stops rod 321 become the state of being pressed into, needle bar drives spheroid 323 to retreat from upside spheroid manhole appendix 112, therefore, releasing needle bar 110 is clasped the hold mode of portion 25 with respect to needle bar.

In addition, due at the pin shape 321a of portion when being pressed into state, the part that needle bar stops spheroid 324 is protruded from downside spheroid manhole appendix 113, so utilize spheroid retainer 326 to stop the decline of needle bar 110 with respect to needle bar pedestal 31.In addition, above-mentioned retainer 325 is configured to, in the time that needle bar 110 is positioned at top dead centre and the lower surface butt of the upper mass 311 of needle bar pedestal 31 or approach, also stop needle bar 110 to move to the top compared with top dead center position with respect to needle bar pedestal 31.

Therefore, needle bar 110 becomes the hold mode with respect to needle bar pedestal 31.

As noted above, needle bar stop 32 is in the time that needle bar 110 is positioned at top dead centre, by stopping the push operation of rod 321 the pin shape 321a of portion, thereby needle bar 110 can be switched to the hold mode (top dead center position halted state) with respect to needle bar pedestal 31 from clasp the hold mode (moving up and down operating state) of portion 25 with respect to needle bar.In addition, if remove the push operation of the pin 321a of shape portion, can utilize and automatically return to the hold mode of clasping portion 25 with respect to needle bar by pressing spring 322 from the hold mode with respect to needle bar pedestal 31.

［ needle bar switching mechanism: switch drive division ］

In needle bar switching mechanism 30, by needle bar pedestal 31 is swung around Y-axis centered by back shaft 315, thereby can select suture needle 11 or 12.

Therefore, in switching drive division 34, so that the leading section of the suture needle 11 while being positioned at top dead centre and lower dead center middle and be positioned at top dead centre and the leading section of suture needle 12 when lower dead center middle, the mode that becomes respectively consistent angle of inclination with respect to vertical line orthogonal with the center line of back shaft 315 and that extend to vertical below, swings needle bar pedestal 31.In addition, the leading section of the leading section of suture needle 11 and suture needle 12 is formed respectively to the state at consistent angle of inclination with respect to above-mentioned vertical line, be called suture needle 11 or suture needle 12 " sewing position ".In addition, each suture needle 11,12 shares 15 and 1 still of 1 middle presser feet, forms stitching.

As shown in Fig. 4～Fig. 6, switch drive division (switching-driving device) 34 and have: cylinder 341, it becomes the drive source of the wobbling action of needle bar pedestal 31; Bell crank 342, the rotation wrist of one side and the plunger of cylinder 341 link; Connecting rod body 343, the rotation wrist of the opposite side of one end and bell crank 342 links; Input wrist 346, itself and an end link of connecting rod body 343; Camshaft 344, one end is fixedly connected on input wrist 346; Eccentric cam 344a, it is distolateral that it is arranged on another of camshaft; And square block 347(is shown in Figure 8), its setting-up eccentricity cam 344a.

If make the action of advancing and retreat of the plunger of cylinder 341, bell crank 342 rotates, and connecting rod body 343 is advanced and retreat mobile.The other end of this connecting rod body 343 links with the pivoting end of input wrist 346, can apply rotation action to input wrist 346 by the action of cylinder 341.In addition, cylinder (the 2nd actuator) 341 is supported on sewing machine stand 101 swingably, in the advance and retreat action of plunger, and can be by swinging the displacement of the X-direction of allowing that the linking part between bell crank 342 produces.

Fixedly connected camshaft 344 on input wrist 346, has the circular eccentric cam 344a with respect to center of rotation bias.In addition, this eccentric cam 344a as shown in Figure 8, inserts in the hole 347a of square block 347.Square block 347 is chimeric with the embeded slot 318 forming in the bottom piece 312 of needle bar pedestal 31.Embeded slot 318 is in the bottom of needle bar pedestal 31, and (parallel with the pendulum radius direction of needle bar pedestal 31) forms along its length.Therefore, if by the driving of cylinder 341, via input wrist 346, camshaft 344 is rotated, direction (X-direction) is mobile to the left and right for square block 347, can make needle bar pedestal 31 swing.

In addition, the each several part of each structure that switches drive division 34 is designed and sized to, and is positioned at progressive position at the plunger of cylinder 341, becomes suture needle 11 and be positioned at the state of sewing position, plunger at cylinder 341 is positioned at going-back position, becomes suture needle 12 and be positioned at the state of sewing position.In addition, needle bar pedestal 31 or switch some in the structure of drive division 34, also can arrange 2 retainers, so that the position that becomes the position of sewing position and suture needle 12 and become sewing position in suture needle 11 is stopped exactly.In the case, also the position of each retainer can be made as and can regulate, the position of suture needle 11,12 is made as and can be regulated.

［ needle bar switching mechanism: stop selection portion ］

Stop selection portion (stopping selection mechanism) the 33rd, by the needle bar stop separately 32,32 for needle bar 110 and needle bar 120, carry out for the pin shape 321a of portion separately, the push operation of 321a, thereby (needle bar 110 of a side remains on needle bar and clasps in portion 25 to carry out the first selection mode, the needle bar 120 of opposite side remains on the state on needle bar pedestal 31) and the second selection mode (needle bar 110 of a side remains on needle bar pedestal 31, and the needle bar 120 of opposite side remains on needle bar and clasps the state in portion 25) between state switch mechanism.

Stop selection portion 33 as shown in Fig. 5～Fig. 7, have: cylinder (actuator) 331, its state that becomes needle bar 110 and needle bar 120 switches the drive source of action; And changer lever (switching part) 332, the plunger of its input wrist 332a and cylinder 331 links.

Back-up block 35 is fixed on Sewing machines arm 102.Back shaft 315 is fixed on back-up block 35.This back shaft 315 can support needle bar pedestal 31 and changer lever 332 rotationally around Y-axis.In addition, changer lever 332 approaches the upside that is configured in 2 needle bars 110,120.

Above-mentioned changer lever 332 has: input wrist 332a, and it extends to the radial direction centered by back shaft 315; And 2 be pressed into protruding 332b, 332c, they all extend to the radial direction different from input wrist 332a.

Changer lever 332, with input wrist 332a state upward, is supported on back shaft 315 rotationally.This input wrist 332a links with the plunger that is supported on the cylinder 331 on back-up block 35.In addition, cylinder 331 is supported on back-up block 35 swingably, in the advance and retreat action of plunger, and can be by swinging the displacement of the Z-direction of allowing that the linking part between the input wrist 332a of changer lever 332 produces.

In addition, 2 be pressed into protruding 332b, 332c all towards roughly below, the backward movement of the plunger by cylinder 331, protruding being pressed into of one side 332b is switched to and the relative position of the pin shape 321a of portion protruding from needle bar 110, the forward motion of the plunger by cylinder 331, switches to protruding being pressed into of opposite side 332c and the relative position of the pin shape 321a of portion protruding from needle bar 120.

In addition, the protrusion length setting that is respectively pressed into protruding 332b, 332c is, in the time that needle bar 110,120 separately rises to top dead centre height, the length that the pin shape 321a of portion, 321a is separately pressed into can switch the amount of being pressed into of hold mode of needle bar 110,120 separately.

In addition, the wobbling action of the needle bar pedestal 31 that utilization switching drive division 34 carries out and utilization stop the switching of switching to the first or second selection mode action that selection portion 33 is carried out, and carry out in linkage each other.

; stop the changer lever 332 of selection portion 33 in utilization; when needle bar 110,120 is switched to the first selection mode (state that needle bar 110 moves up and down); switch drive division 34 and carry out wobbling action; so that the needle bar 110 of needle bar pedestal 31 becomes sewing position; stop the changer lever 332 of selection portion 33 in utilization; when needle bar 110,120 is switched to the second selection mode (state that needle bar 120 moves up and down); switch drive division 34 and carry out wobbling action, so that the needle bar 120 of needle bar pedestal 31 becomes sewing position.

Therefore, set the input wrist 332a of changer lever 332 and be pressed into the size of protruding 332b, 332c and the stroke of cylinder 331, to make in the time making being pressed into protruding 332b, 332c and rotating to the position relative with the pin shape 321a of portion, the 321a of each needle bar 110,120 separately of changer lever 332, consider the pendulum angle of needle bar pedestal 31 and become suitable position.

In addition, 2 retainers also can be set, to make in the time that cylinder 331 moves, be pressed into protruding 332b, the 332c separately of changer lever 332 stop in position exactly.In the case, also the position of each retainer can be made as adjustablely, the stop position that is pressed into protruding 332b, 332c is made as adjustable.

［ thread end clamping device ］

Thread end clamping device 18 has: spudger, its can provoke hang down from the pin hole of suture needle 11,12 thread end; Suction port, its upper thread end that spudger can be guided sucks; Spheroid, it clamps the upper thread end that guides to suction port; And cylinder 181(is shown in Figure 11) etc., it makes spheroid to suction port side shifting.

In addition, making while starting, after penetrating in 2 suture needles 11,12 to the left and right and reaching the standard grade, operating personnel operates having omitted illustrated guidance panel, drives spudger, and the U1 that reaches the standard grade, the U2 of left and right are guided to suction port.In the time making beginning, the upper thread end of left and right is sucked into suction port.But, due to the attraction of suture a little less than, so if the suture needle of a side moves up and down and forms stitching, depart from the attraction of the suture to a side.If form the stitching of several pins, spheroid moves, and the reaching the standard grade of suture needle of the opposite side that does not form stitching clamped, and therefore, reaching the standard grade of the suture needle of opposite side can be involved in, sew up.In addition, after tangent line, automatically drive spudger, thread end in attraction.

［ line holding device ］

Fig. 9 is the front view of line holding device 60, and Figure 10 is oblique view.Line holding device 60, to keeping at reach the standard grade U1 or the U2 that do not have to insert in the suture needle 11 or 12 of selecting as the suture needle of making, extracts from suture needle 11 or 12 due to the enhancing action of Libra 141 preventing.

Line holding device 60 has: movable holding member 61, and it is arranged on the bottom, front side of needle bar pedestal 31; And fixing holding member 62, it has 2 relative portions 621,622, and these 2 relative portions 621,622 approach relatively in the both sides of the swaying direction of needle bar pedestal 31 with respect to movable holding member 61.

Movable holding member 61 is fixedly mounted on the bottom (becoming suture needle 11,12 sides with respect to back shaft 315) of needle bar pedestal 31, is formed with the line maintaining part 611 being forwards bent to form in its bottom.Line maintaining part 611 is formed as the rectangular flat shape along X-Y plane, and 2 side edge part 611a, 611b of its left and right all form abreast with Y direction.

Fixing holding member 62 is fixed on the sewing machine stand of face 105, and portion 621,622 is configured to all and Y-Z plane parallel relatively.

In addition, movable holding member 61 is so that 611 activities of line maintaining part are inserted in the state configuration between the relative portion 621 and 622 of fixing holding member 62.The relative portion 621 of one side of fixing holding member 62 approaches relatively in X-direction left side with the side edge part 611a of a side of line maintaining part 611, and the relative portion 622 of fixing the opposite side of holding member 62 approaches relative on X-direction right side with the side edge part 611b of the opposite side of line maintaining part 611.

In addition, the gap of the side edge part 611a of one side of above-mentioned line maintaining part 611 and the relative portion 621 of a side of fixing holding member 62, become the first threading portion that the U1 that reaches the standard grade that makes to be inserted in suture needle 11 inserts, the U1 that reaches the standard grade the way till making from Libra 141 to suture needle 11 inserts.

In addition, the gap of the side edge part 611b of the opposite side of line maintaining part 611 and the relative portion 622 of the opposite side of fixing holding member 62, become the second threading portion that the U2 that reaches the standard grade that makes to be inserted in suture needle 12 inserts, the U2 that reaches the standard grade the way till making from Libra 141 to suture needle 12 inserts.

Movable holding member 61 is arranged on along X-direction and carries out on the needle bar pedestal 31 of reciprocally swinging, and needle bar pedestal 31, the suture needle of selecting to make 11,12 o'clock, utilizes the switching drive division 34 of needle bar switching mechanism 30 to apply wobbling action.

In addition, due in the time selecting suture needle 11, switch drive division 34 and make the bottom of needle bar pedestal 31 to right-hand swing, so the side edge part 611b of opposite side of line maintaining part 611 and relative portion 622 side contacts of the opposite side of fixing holding member 62 of movable holding member 61.Its result, the U2 that reaches the standard grade of suture needle 12 sides that do not use becomes by the state of they clampings, can resist the enhancing action of Libra 141 and the U2 that prevents from reaching the standard grade is extracted from suture needle 12.

In addition, due in the time selecting suture needle 12, switch drive division 34 bottom of needle bar pedestal 31 is swung to left, so the side edge part 611a of a side of line maintaining part 611 and relative portion 621 side contacts of a side of fixing holding member 62 of movable holding member 61.Its result, the U1 that reaches the standard grade of suture needle 11 sides that do not use becomes by the state of they clampings, can resist the enhancing action of Libra 141 and the U1 that prevents from reaching the standard grade is extracted from suture needle 11.

［ middle presser feet ］

Middle presser feet 15 has can be by movable the suture needle of selecting in the time the making 11 or 12 frame shape portion inserting, this frame shape portion and suture needle 11 or 12 synchronously move up and down with less stroke, suppress due to and suture needle 11 or 12 between friction cloth is teetertottered significantly, and for extracting suture needle 11 or 12 from cloth more reliably.

In this, presser feet 15 is supported on the not shown middle presser feet driving mechanism being arranged in Sewing machines arm 102, and in this, presser feet driving mechanism obtains power from upper axle 22, and the action that moves up and down of carrying out middle presser feet 15 applies.

［ winding mechanism ］

Winding mechanism 19(is with reference to Fig. 2) be for to being arranged on the mechanism that reels and roll off the production line on the bobbin of still inside.Winding mechanism 19 has: bobbin keeps platform 19a, and it arranges bobbin; And Poewr transmission mechanism, it obtains power from upper axle 22, keeps platform 19a to apply spinning movement to bobbin.This Poewr transmission mechanism has the test rod 19b to keeping the situation that is provided with bobbin on platform 19a to detect at bobbin, in the time utilizing test rod 19b bobbin to be detected, carries out keeping from upper axle 22 to bobbin the power transmission of platform 19a.In addition, test rod 19b, after the rolling off the production line of the ormal weight of reeling on bobbin, will keep from upper axle 22 to bobbin the power transmission of platform 19a to cut off.

［ guidance panel ］

Guidance panel 70(is with reference to Figure 11) there is touch panel 71 and liquid crystal panel 72.The control device 90 of this guidance panel 70 and Sewing machines is by wired or wireless connection.

Touch panel 71 is configured in the display frame of liquid crystal panel 72, has the function that detects the contact position that the display frame of liquid crystal panel 72 is contacted.

Liquid crystal panel 72 is to possess the operation push-button group with various buttons or button and the display part that shows the function of various stitch datas and various display frames.

; guidance panel 70 is by the operation push-button group showing on liquid crystal panel 72 etc. is touched to operation; thereby utilize the such as position of induction, magnetic deformation formula, electrostatic capacity type, pressure sensing type etc. to read principle; the position that touch panel 71 is touched to instruction is detected; and the position that can detect with this is corresponding, and carries out various operations and the input of various data etc. of Sewing machines or show the equipment of various display frames.

For example, guidance panel 70 works as a part for setup unit, it is multiple the making in unusual pattern being stored in memory cell described later (data storage 94), selects and set the unusual pattern of making as the judgement object of the running-active status of Sewing machines 100.

［ control system of Sewing machines: control device ］

Figure 11 is the block diagram that represents the control system of Sewing machines 100.Sewing machines 100 has the control device 90 as control module, and its action for the each several part to above-mentioned, each parts is controlled.In addition, control device 90 has: ROM92, and it stores the program of the action control for making; RAM93, it becomes the operating area of calculation process; As non-volatile data storage 94 of memory cell, the various data such as its storage stitch data; And CPU91, it carries out the program in ROM92.

In addition, CPU91 is connected with sewing machine electromotor drive circuit 21a, X-axis motor drive circuit 83a, Y-axis motor drive circuit 84a via not shown interface, via them, the driving of sewing machine electromotor 21, X-axis motor 83, Y-axis motor 84 is controlled.

Sewing machine electromotor 21 is the servomotors that are simultaneously provided with not shown encoder, and its detection angles is exported to CPU91.

In addition, above-mentioned X-axis motor 83 and Y-axis motor 84 are stepping motors, and above-mentioned not shown initial point retrieval unit is connected with CPU, and CPU91 can identify the origin position of each motor 83,84 according to its output.

In addition, CPU91 is via not shown interface, be connected with drive circuit 333a, 347a, 182a, the electromagnetic valve 333,347,182 that they move respectively for the cylinder 341 of the switching drive division 34 to the cylinder that stops selection portion 33 331 that makes needle bar switching mechanism 30, needle bar switching mechanism 30 and the cylinder 181 of thread end clamping device 18 is controlled.

In addition, the only built-in solenoid of line adjuster 133 in above-mentioned line adjuster 131～133, control that can be by control device 90 and control line tension force at random.Therefore, the drive circuit 133a of this line adjuster 133 is connected with CPU91 via not shown interface.

In addition, in the time making and in other situations, first and second line-breakage sensor 161,162 of the state-detection of the U1 that reaches the standard grade, U2 is connected with CPU91 via sensor driver 160a.

In data storage 94, in the stitch data of storage, record: cloth feeding data, it determines the cloth amount of feeding of X-axis motor 83 and Y-axis motor 84, and this X-axis motor 83 and Y-axis motor 84 are for making cloth move to the needle downing position of every pin of the tailoring pattern for making regulation; Select suture needle data, it determines which suture needle 11 or 12 of use; And line tension data etc., it determines line tension, CPU91, in the time making, reads the setting content of above-mentioned stitch data for each pin, carry out the action control of each structure of Sewing machines.

For example, the cloth feeding data that read every pin at CPU91, drive X-axis motor 83 and Y-axis motor 84 in the timing of the upper shaft angle degree that becomes regulation, cloth is moved to the needle downing position that becomes target.

In addition, the in the situation that of CPU91 read line tension data, becoming the built-in solenoid of timing drive wire adjuster 133 of upper shaft angle degree of regulation, drive in the mode that becomes score tension force.

In addition,, in data storage 94, store multiple data of making unusual pattern of the U1 that reaches the standard grade separately that can detect about the driving condition based on 2 needle bars 110,120 and 2 line-breakage sensors 161,162, combination that U2 moves.Make unusual pattern for this, describe in the back.

In addition, in CPU91 is making, read the in the situation that of selecting suture needle data, carry out successively " sewing machine electromotor stops " → " cut-out of above rolling off the production line " → " switching of the suture needle using ".

,, in " sewing machine electromotor stops ", CPU91 controls and is, at the upper shaft angle degree of regulation, sewing machine electromotor 21 is stopped.

And in " cut-out of above rolling off the production line ", CPU91 controls not shown Wire-cutting electric machine, the tangent line of reaching the standard grade and rolling off the production line of making has been carried out in execution before this.

In addition, in " switching of the suture needle using ", CPU91 moves the cylinder that stops selection portion 33 331 of needle bar switching mechanism 30 and the cylinder 341 of switching drive division 34, and changer lever 332 and needle bar pedestal 31 are swung.

Thus, utilize changer lever 332, switch the position that is pressed into of the pin shape 321a of portion that the upper end from needle bar 110 or 120 is protruded.In addition, needle bar pedestal 31 swings, and suture needle 11 or 12 is positioned on sewing position.

［ the switching action of the suture needle using ］

Based on the action specification figure of Figure 12, further describe above-mentioned " switching of the suture needle using " action.

The CPU91 of control device 90 in the case of form tailoring pattern make select, suture needle data, for example, to switch to other suture needles from the suture needle of having carried out so far making from reading stitch data midway.Exemplify the situation that switches to suture needle 11 from suture needle 12 here.

First, the mode that CPU91 stops the rotation of axle 22 using the upper stop position of the upper axle stop angle as regulation, stops sewing machine electromotor 21.For example, by the upper shaft angle degree of upper stop position be made as Libra 141 top dead centre (for example, using needle bar top dead centre as on 0 ° of shaft angle degree in the situation that, be the scope of 30～50 ° of upper shaft angle degree).Now, by the position of needle bar top dead centre, sewing machine electromotor 21 is stopped, therefore, the needle bar 120 that the suture needle 12 of having carried out so far making is kept, produces down maneuver slightly compared with top dead center position.In addition, in Figure 12 (A), the state that needle bar 120 is significantly declined is illustrated, but the difference of height of the needle bar 120 stopping in needle bar 110 and upper rest position is less than the situation of Figure 12 (A).

In addition, under above-mentioned halted state, not shown Wire-cutting electric machine is controlled, the tangent line of reaching the standard grade and rolling off the production line of making has been carried out in execution so far.Then, the spudger of drive wire end clamping device 18, guides the upper thread end of the suture needle of left and right 11,12, attract to suction port.

Then, as shown in Figure 12 (B), the cylinder 341 of the switching drive division 34 of needle bar switching mechanism 30 is moved, needle bar pedestal 31 is swung towards right-hand direction to bottom.Thus, from sewing position (position under back shaft 315) departs from, suture needle 11 is switched to sewing position in suture needle 12.

In addition, the cylinder 331 that stops selection portion 33 is moved, changer lever 332 is rotated, with make the protruding 332c of being pressed into of changer lever 332 become with swing after the relative position of the pin shape 321a of portion of needle bar 120 of needle bar pedestal 31.

In this moment, needle bar 12 declines slightly, and therefore, the pin shape 321a of portion that is pressed into protruding 332c and needle bar 120 can not produce interference, can make changer lever 332 rotate.

By the rotation of above-mentioned changer lever 332, make to be pressed into protruding 332b from departing from the relative position of the pin shape 321a of portion of needle bar 110, therefore, the rod 321 that stops of the inside of needle bar 110 is pressed that spring 322 is pressed and produces upward mobile.Thus, the 321c of grooved cam portion is moved upward, and makes needle bar stop spheroid 324 and keep out of the way to the inside (with reference to Fig. 7) in downside spheroid manhole appendix 113.Therefore, remove needle bar 110 and remain on the state on needle bar pedestal 31.In addition, owing to by the position of needle bar top dead centre, axle 22 being stopped at upper shaft angle degree, so needle bar is clasped the state of portion 25 in slightly declining, therefore, in this moment, the needle bar of needle bar 110 drives spheroid 323 cannot become the state protruding laterally from upside spheroid manhole appendix 112, and needle bar 110 does not become and remains on needle bar and clasp the state in portion 25.

In addition, CPU91 controls, and sewing machine electromotor 21 is driven in the mode of reverse rotation, is back to needle bar top dead centre from upper stop position (Libra top dead centre).Thus, needle bar 120 and needle bar are clasped portion 25 and are risen, the pin shape 321a of portion of needle bar 120 and being pressed into protruding 332c butt of changer lever 332 and be pressed into downwards.Therefore, the 321b of grooved cam portion that stops rod 321 of the inside of needle bar 120 declines, and needle bar drives spheroid 323 to retreat to the inside from upside spheroid manhole appendix 122.In addition, the 321c of grooved cam portion also declines, and makes needle bar stop spheroid 324 and protrudes from downside spheroid manhole appendix 123.Therefore,, for needle bar 120, releasing needle bar is clasped the hold mode of portion 25, switches to maintained state on needle bar pedestal 31.

On the other hand, in needle bar 110, needle bar drives spheroid 323 to protrude from upside spheroid manhole appendix 112, becomes and needle bar 110 is remained on to needle bar clasps the state in portion 25.

In addition, if needle bar pedestal 31 rotates to the state of Figure 12 (B) from the state of Figure 12 (A),, in online holding device 60, movable holding member 61 is to right-hand movement, by the side edge part 611a in the left side in its line maintaining part 611 and the U1 release of reaching the standard grade of maintenance between portion 621 relatively.In addition, the side edge part 611b and relative portion 622 butts, the maintenance of the U2 that reaches the standard grade between them on the right side of the line maintaining part 611 of movable holding member 61.

Then, sewing machine electromotor 21 starts to be rotated with common direction of rotation again, utilize suture needle 11 pin that falls, but because the U2 that reaches the standard grade of suture needle 12 is clamped with relative portion 622 by the side edge part 611b of line maintaining part 611, even so utilize Libra 141 to promote upward, also prevent from extracting from suture needle 12.In addition, making after beginning, if form several needlework marks, making the spheroid of thread end clamping device 18 move, the reaching the standard grade of suture needle 12 that does not form stitching clamped, therefore, preventing that reaching the standard grade of suture needle 12 is involved in, sews up by suture needle 11.

In addition, be not limited to stitch data in the reading in together of selection suture needle data, carry out " switching of the suture needle using ", for example also can be by carrying out the operation input of " selection suture needle " button (omitting diagram) in push panel 70, thereby carry out " switching of the suture needle using " as above, utilize expect suture needle 11,12(needle bar 110,120) side the U1 that reaches the standard grade, U2 realize make.

［ the running-active status judgement of two-needle sewing machine ］

Below, the running-active status judgement of the Sewing machines to the first line-breakage sensor 161 in use Sewing machines 100 and the second line-breakage sensor 162 describes.In addition, the first line-breakage sensor 161 and the second line-breakage sensor 162 are referred to as mobile 2 sensors that detect of reaching the standard grade.

Here, to select a needle bar 110, the situation that the suture needle 11 that utilizes this needle bar 110 to have is made describes for example.In addition, also identical in the case of the suture needle 12 that utilizes another needle bar 120 to have is made, therefore, omit this explanation.

For example, in the driving that switches to a needle bar 110, while utilizing the suture needle 11 of selected needle bar 110 to make, make in the absence of extremely and conventionally making, as shown in " No.1 " part of Figure 13, the first line-breakage sensor 161 is to repeatedly sending the connection signal accompanying with the movement of the U1 that reaches the standard grade and detecting with the signal that stops cut-off signal together with specified period, the second line-breakage sensor 162 detects the cut-off signal together that stops with the U2 that reaches the standard grade constantly.

,, in the time using the suture needle 11 of needle bar 110 to make, by the signal shown in " No.1 " part of Figure 13 detected respectively by the first line-breakage sensor 161 and the second line-breakage sensor 162, thereby can detect the common situation of making of having carried out.

In addition, in the driving that switches to a needle bar 110, while utilizing the suture needle 11 of selected needle bar 110 to make, in the case of produce be not the U2 that reaches the standard grade in making be drawn into and sew up in making reach the standard grade in U1 make abnormal, as shown in " No.3 " part of Figure 13, the first line-breakage sensor 161 detect with specified period repeatedly send the connection signal that accompanies with the movement of the U1 that reaches the standard grade and with the signal that stops cut-off signal together, the second line-breakage sensor 162 detect with make in the on/off signal of the U2 that reaches the standard grade that extracts out of the U1 that reaches the standard grade cycle of synchronizeing.

; in the time that the suture needle 11 that uses needle bar 110 is made; by utilizing the first line-breakage sensor 161 and the second line-breakage sensor 162 to detect the signal shown in " No.3 " part of Figure 13, will not that making of sewing up of the U2 that reaches the standard grade in making is abnormal thereby can detect.

In addition, in the driving that switches to a needle bar 110, while utilizing the suture needle 11 of selected needle bar 110 to make, in the case of the making of U1 broken string of reaching the standard grade during generation is made is abnormal, as shown in " No.2 " part of Figure 13, detect constantly the not mobile cut-off signal causing due to the U1 that reaches the standard grade by the first line-breakage sensor 161, the second line-breakage sensor 162 detects the cut-off signal together that stops with the U2 that reaches the standard grade constantly.

; in the time that the suture needle 11 that uses needle bar 110 is made; by utilizing the first line-breakage sensor 161 and the second line-breakage sensor 162 to detect respectively the signal shown in " No.2 " part of Figure 13, thereby can detect the making extremely of U1 broken string of reaching the standard grade in making.

In addition, in the driving that switches to a needle bar 110, while utilizing the suture needle 11 of selected needle bar 110 to make, generation is not that the U2 that reaches the standard grade in making is wound on making in abnormal situation on Libra 141, as shown in " No.4 " part of Figure 13, the first line-breakage sensor 161 detect with specified period repeatedly send the connection signal that accompanies with the movement of the U1 that reaches the standard grade and with the signal that stops cut-off signal together, the second line-breakage sensor 162 detects and continues to extract out the connection signal of U2 and be not the on/off signal of specified period of reaching the standard grade.

; in the time that the suture needle 11 that uses needle bar 110 is made; by detected respectively the signal shown in " No.4 " part of Figure 13 by the first line-breakage sensor 161 and the second line-breakage sensor 162, be wound on Libra 141 and to extract making of the U2 that reaches the standard grade out abnormal thereby can detect the U2 that reaches the standard grade in not being to make.

In addition, selecting a needle bar 110, and the suture needle 11 that utilizes this needle bar 110 to have is while making, the combination of the action of the U1 that reaches the standard grade, U2 that 2 line-breakage sensors 161,162 detect respectively, is not limited to above-mentioned No.1～No.4.For example, there is the combination of 10 patterns shown in the table of Figure 14.But, in these 10 patterns, these 3 patterns of No.7～No.9, are not the combination patterns in the time utilizing suture needle 11 to make, but the combination pattern of the action of reach the standard grade U1, the U2 relevant to abnormality detection in the time utilizing winding mechanism 19 to roll off the production line to reeling on bobbin.

In addition, the No.1～No.4 shown in the table of Figure 14 is the pattern of " No.1 "～" No.4 " that be equivalent to Figure 13.

Exemplify the combination of the combination of the action of the U1 that reaches the standard grade, U2 that 2 line-breakage sensors 161,162 shown in the table of Figure 14 detect respectively, signal that 2 line-breakage sensors 161,162 detect respectively and the running-active status (abnormality detection) of the Sewing machines that can judge based on this combination below.

For example, by detected the on/off signal of specified period by the first line-breakage sensor 161, detect cut-off signal by the second line-breakage sensor 162, thereby can detect the situation (No.1) (conventionally making) of conventionally making.

In addition, by detecting cut-off signal by the first line-breakage sensor 161, detect cut-off signal by the second line-breakage sensor 162, thereby can detect abnormal (No.2) (burn out detection) of making of U1 broken string of reaching the standard grade in making.

In addition, by detected the on/off signal of specified period by the first line-breakage sensor 161, detected the on/off signal of specified period by the second line-breakage sensor 162, thereby can detect the U2 that reaches the standard grade passing in the suture needle 12 of U2(in action stops of reaching the standard grade in not being to make) sewed up make abnormal (No.3) (stop line sews up detection).

In addition, by detected the on/off signal of specified period by the first line-breakage sensor 161, detect lasting connection signal and be not the on/off signal of specified period by the second line-breakage sensor 162, thereby the U2 that reaches the standard grade that can detect in not being to make is wound on make abnormal (No.4) on Libra 141.

In addition, by detecting lasting connection signal by the first line-breakage sensor 161 and not being the on/off signal of specified period, detect cut-off signal by the second line-breakage sensor 162, thereby the U1 that reaches the standard grade that can detect in making is wound on make abnormal (No.5) on Libra 141.

In addition, by detecting lasting connection signal by the first line-breakage sensor 161 and not being the on/off signal of specified period, detect lasting connection signal and be not the on/off signal of specified period by the second line-breakage sensor 162, thereby can detect the U1 and be not that the U2 that reaches the standard grade in making is all wound on make abnormal (No.6) on Libra 141 of reaching the standard grade in making.

In addition, by detecting cut-off signal by the first line-breakage sensor 161, detected the on/off signal of specified period by the second line-breakage sensor 162, what thereby the threading that can detect reach the standard grade U1 and the U2 that reaches the standard grade was reverse makes abnormal (U1 that reaches the standard grade is inserted in suture needle 12, and the U2 that reaches the standard grade is inserted into the mistake in suture needle 11) (No.10) (backward error of threading detects).

In addition, although do not record in the table of Figure 14, utilizing winding mechanism 19 to reel in the process rolling off the production line, carry out in the situation of common spiral action, the first line-breakage sensor 161 detects cut-off signal, and the second line-breakage sensor 162 detects cut-off signal.

Reel in the process rolling off the production line utilizing winding mechanism 19, by detecting cut-off signal by the first line-breakage sensor 161, detect lasting connection signal and be not the on/off signal of specified period by the second line-breakage sensor 162, be wound on make abnormal (No.7) on Libra 141 thereby can detect the U2 that reaches the standard grade.

In addition, reel in the process rolling off the production line utilizing winding mechanism 19, by detecting lasting connection signal by the first line-breakage sensor 161 and not being the on/off signal of specified period, detect cut-off signal by the second line-breakage sensor 162, be wound on make abnormal (No.8) on Libra 141 thereby can detect the U1 that reaches the standard grade.

In addition, reel in the process rolling off the production line utilizing winding mechanism 19, by detecting lasting connection signal by the first line-breakage sensor 161 and not being the on/off signal of specified period, detect lasting connection signal and be not the on/off signal of specified period by the second line-breakage sensor 162, thus can detect reach the standard grade U1 and reach the standard grade U2 the two be wound on make abnormal (No.9) on Libra 141.

In data storage 94, store the combination that comprises detection signal shown in above-mentioned illustration and detection signal the first line-breakage sensor 161 and the second line-breakage sensor 162, multiplely make the data that unusual pattern is relevant (No.2～No.10) and make the data that state is relevant (No.1) with common, and become and judge whether the running-active status of Sewing machines 100 is the table (with reference to Figure 14) of making abnormal benchmark.In addition in the case of making, the suture needle 12 that utilizes another needle bar 120 to have as the identical table of judgment standard, is also stored in data storage 94.

In addition, carry out the abnormality detection program of making of storing in ROM92 by the CPU91 by control device 90, thereby control device 90(CPU91), the U1 that reaches the standard grade separately detecting as the driving condition based on 2 needle bars 110,120 and 2 line-breakage sensors 161,162, the combination that U2 moves and judge that the control module of the running-active status of this two-needle sewing machine 100 works.

For example, control module 90 carries out reference to the table (with reference to Figure 14) of storage in data storage 94, the running-active status of Sewing machines 100 with in this table, make in unusual pattern one when consistent, judge that the running-active status of Sewing machines 100 is for making extremely.

In addition, the control module that the running-active status of Sewing machines 100 is judged, multiple the making in unusual pattern being stored in data storage 94, by the unusual pattern of making of selecting via guidance panel 70, be set as the judgement object of the running-active status of Sewing machines 100, and, the running-active status of Sewing machines 100 and this setting make unusual pattern when consistent, judge that the running-active status of Sewing machines 100 is abnormal for making.

In addition, at the control module that the running-active status of Sewing machines 100 is judged, the running-active status that judges Sewing machines 100 is to make in abnormal situation, control device 90(CPU91) execution stops sewing machine electromotor 21, and the processing that the driving of Sewing machines 100 is stopped.

In addition, at the control module that the running-active status of Sewing machines 100 is judged, the running-active status that judges Sewing machines 100 is abnormal for making, and when Sewing machines 100 is stopped, control device 90(CPU91) carry out the processing that shows the running-active status of Sewing machines 100 on guidance panel 70.

［ the running-active status judgement of Sewing machines is processed ］

Below, based on the flow chart shown in Figure 15, the running-active status judgement of Sewing machines 100 is processed and described.

First, carry out the setting relevant to abnormality detection (step S1) via guidance panel 70.

For example, in the case of utilizing suture needle 11 that a needle bar 110 has makes, carry out the make abnormal detection corresponding with No.2～No.6, the No.10 of the table shown in Figure 14 to be made as effective setting, and for example set, for being defined as making abnormal abnormality detection pin number (, 5 pins).In addition,, in the situation that utilizing winding mechanism 19 coilings to roll off the production line, carry out the abnormal detection relevant to the No.7～No.9 of the table shown in Figure 14 to be made as effective setting.As noted above, can be corresponding with the situation of the situation of utilizing Sewing machines 100 to make and the coiling that rolls off the production line, carry out independently respectively the setting relevant to abnormality detection.

In addition, the beginning switch by push panel 70 is also carried out and is made, thus start Sewing machines 100 make action (step S2).

Then, control device 90(CPU91) according to operation or setting or stitch data (selecting suture needle data), confirm that the needle bar of selecting and driving is needle bar (needle bar) 110 or the needle bar on right side (another needle bar) the 120(step S3 in left side), (step S4) confirmed in the action of the U1 that reaches the standard grade, the U2 that 2 line-breakage sensors 161,162 are detected respectively.

Then, control device 90(CPU91) driving condition based on 2 needle bars 110,120 and the detected U1 that reaches the standard grade separately of 2 line-breakage sensors 161,162, the combination that U2 moves, running-active status to Sewing machines 100 judges, is determined with without making abnormal (step S5).Have or not this to make abnormal judgement, be based on the unusual pattern of making corresponding to No.2～No.6, No.10 that set and table Figure 14 in step S1 and judge.

Then, at control device 90(CPU91) detect and make (step S6: be) abnormal in the situation that, make the pin number of abnormality detection increase progressively 1, and count (step S7).In addition, pin number is based on counting from the signal of machine spindle motor.

Then, control device 90(CPU91) whether the pin number of abnormality detection is reached to the pin number (for example, 5 pins) of setting in step S1 judge (step S8).

If control device 90(CPU91) the pin number that is judged as abnormality detection do not reach the pin number (5 pin) (step S8: no) of setting in step S1, returns to step S3.

On the other hand, if control device 90(CPU91) the pin number that is judged as abnormality detection reaches the pin number (5 pin) (step S8: be) of setting in step S1, control device 90(CPU91) sewing machine electromotor 21 is stopped, making Sewing machines 100 emergent stoppings (step S9).In addition,, control device 90(CPU91 corresponding with emergent stopping) on the display part of guidance panel 70, show the result of determination of abnormality detection.For example, in the situation that making unusual pattern No.2, on the display part of guidance panel 70, carry out the demonstration of " detecting the upper thread breaking of left side needle bar (suture needle) ".

In addition, in step S6, at control device 90(CPU91) do not detect and make (step S6: no) abnormal in the situation that, the pin number of abnormality detection is reset to zero (step S10).

Then, if control device 90(CPU91) not the making of tailoring pattern that be judged as regulation finish (step S11: no), returns to step S3.

On the other hand, if control device 90(CPU91) be judged as the sewing finishing (step S11: be) of the tailoring pattern of regulation, control device 90(CPU91) sewing machine electromotor 21 is stopped, making Sewing machines 100 conventionally stop (step S12), finish to make action.

The running-active status judgement of above-mentioned Sewing machines is processed and can be carried out various changes.

For example, for making abnormal pin number, can in the time dispatching from the factory, preset as initial value, also can be in the situation that operating personnel's new settings abnormality detection pin be counted, use this setting while once making upper.

In addition, in the above-described embodiment, in step S6, detect abnormal in the situation that, in step S7, abnormality detection pin number is counted, in step S8, judge whether reaching abnormality detection pin number.Also can replace this technical scheme, detect abnormal in the situation that, at least one the amount of feeding in X-axis motor 83, Y-axis motor 84 that holding frame 81 moves is counted, judge whether to reach the abnormality detection amount of feeding.In addition, also can detect abnormal in the situation that, the time is being measured, judge as having reached anomaly detection time in for example situation in extremely lasting 3 seconds.Above-mentioned abnormality detection pin number, the abnormality detection amount of feeding, anomaly detection time are generically and collectively referred to as to abnormality detection benchmark.

In addition, Figure 14 becomes to judge whether the running-active status of Sewing machines is the table of making abnormal benchmark.In this table, the action of reaching the standard grade in making is in normal situation, and connection, the cut-off signal of 161,162 pairs of specified period of sensor detect.But, in the case of the response speed of used sensor 161,162 is slower and sewing speed at a high speed, even if the action of reaching the standard grade in making is normal, sensor 161,162 does not detect connection, the disconnection of specified period yet, but detects the connection signal that continues to send and be not the on/off signal of specified period.Its result, possibly cannot distinguish the No.1 of Figure 14, No.2, No.3, No.10 and No.4 to No.10.

For fear of this wrong judgement, easily expect using the running-active status master meter of the Sewing machines shown in Figure 16.This running-active status master meter is only made up of No1, No2, No3, No10." connect or on-off cycle " in this table, refers to detect the on/off signal of the connection signal that continues to send, specified period and be not the state of the on/off signal of specified period.If the running-active status master meter of the Sewing machines shown in use Figure 16, can judge more reliably and make abnormal running-active status.

In addition, also expect as making abnormal running-active status the one during the backward error that uses stop line to sew up detection and threading detects.

In addition, the driving of winding mechanism 19 is to be undertaken by the touch operation of guidance panel 70.Therefore, control device 90 can receive from the input signal of guidance panel and the situation in spiral is identified.Easily expect according to the signal in this spiral, to No.7, the No.8, the No.9 that append Figure 14 in the table of Figure 16, make control device 90 can identify the situation on Libra that is wound in spiral.

［ action effect of embodiment ］

Above-mentioned Sewing machines 100 is by operating or setting, switch to any one needle bar in 2 needle bars 110,120 is driven, the suture needle that the needle bar that utilization is selected has is made, this Sewing machines 100 has: the first line-breakage sensor 161, and the action of reaching the standard grade that the suture needle of a needle bar of its subtend is supplied with detects; The second line-breakage sensor 162, the action of reaching the standard grade that the suture needle of its another needle bar of subtend is supplied with detects; Control module 90, the combination of its driving condition based on above-mentioned 2 needle bars and the action of reaching the standard grade separately that detected by above-mentioned 2 sensors, judges the running-active status of this two-needle sewing machine.

In addition, control module 90 is characterised in that, in the time that the running-active status that judges this two-needle sewing machine is abnormal for making, this two-needle sewing machine is stopped.

In addition, above-mentioned Sewing machines 100 is characterised in that, there is memory cell 94, it stores multiple unusual patterns of making, the plurality of combination of making the action of reaching the standard grade separately that the driving condition of unusual pattern based on 2 needle bars and above-mentioned 2 sensors 161,162 can detect, control module 90 is made in unusual pattern one when consistent in memory cell 94 in the running-active status of two-needle sewing machine with being stored in, the running-active status that is judged as this two-needle sewing machine be make abnormal.

In addition, above-mentioned Sewing machines 100 is characterised in that, there is setup unit 90, it is multiple the making in unusual pattern being stored in memory cell, select and set the unusual pattern of making as the judgement object of the running-active status of this two-needle sewing machine, control module 90, the running-active status of two-needle sewing machine with set by setup unit 90 make unusual pattern when consistent, the running-active status that is judged as this two-needle sewing machine be make abnormal.

In addition, above-mentioned Sewing machines 100 is characterised in that, what control module 90 judged makes abnormal, comprise reaching the standard grade of passing in the suture needle in action stops sewed up and the backward error of threading at least one.

In addition, above-mentioned Sewing machines 100 is characterised in that to have display part 70, and the running-active status of its this two-needle sewing machine that control module 90 is judged shows.

As noted above, Sewing machines 100 not only can be as shown in the prior art to relevant extremely the detecting of broken string, and the combination of the action of the U1 that reaches the standard grade, the U2 that can detect respectively based on existing 2 line-breakage sensors 161,162, various making extremely detected, therefore, needn't newly append sensor, just can carry out efficiently various abnormal detections.

［ other ］

In addition, above-mentioned needle bar switching mechanism 30 is not limited to electronic cycle sewing machine, also can apply, be equipped on the various Sewing machiness such as so-called sewing machine for covering chain stitch.In the situation that being applied to sewing machine for covering chain stitch, input block (guidance panel 70 etc.) is preferably set, the execution that operating personnel are switched to the control device 90 instruction input needle bars 110,120 of Sewing machines by this input block.

In addition, the changer lever 332 that stops selection portion 33 is to have the protruding 332b that is pressed into protruding to radial direction outside, the structure of 332c, at the each needle bar 110 in " switching of the suture needle using " action, when 120 hold mode is switched, with from each needle bar 110, the pin shape 321a of portion that protrude 120 upper end, 321a and be pressed into protruding 332b, the hands-off mode of 332c, in the time that the needle bar 110 or 120 that is held in needle bar and clasps the state in portion 25 is positioned at the upper stop position by top dead centre, carry out the rotation of changer lever 332, then, axle 22 is counter-rotated, return to top dead center position, carry out being pressed into of the pin shape 321a of portion.

, as shown in figure 17, also can between the protruding 332b of being pressed into of changer lever 332 and 332c, utilize the tapered portion shape 332d of portion that diameter little by little dwindles to link here, be formed as periphery cam-like.Thus, remain on needle bar clasp the state in portion 25 needle bar 110 or 120 the pin shape 321a of portion and be pressed into protruding 332b or 332c does not interfere, can make changer lever 332 rotate.

Therefore, in the time that " switching of the suture needle using " moves, can make sewing machine electromotor 21 not stop at upper stop position, but stop at needle bar top dead centre, under this state, carry out the rotation of tangent line, needle bar pedestal 31, the rotation of changer lever 332, needle bar 110,120 is switched, directly again start to make.That is, do not need the reverse rotation action of sewing machine electromotor 21, can promptly carry out needle bar and switch action.

［ other examples of line holding device ］

In addition, also can replace the line holding device 60 shown in Fig. 9, the line holding device 60A shown in Figure 18～Figure 20 is arranged on Sewing machines 100.

This line holding device 60A has: movable holding member 61A, and it is fixedly mounted near the side on right side of needle bar pedestal 31; And fixing holding member 62A, it has and approaches relative 2 the relative 621A of portion, 622A with movable holding member 61A in the both sides of the swaying direction of needle bar pedestal 31.

The upper end of above-mentioned movable holding member 61A utilizes 2 screws to be fixed on the right part of front surface of needle bar pedestal 31.In addition, the bottom of movable holding member 61A is formed with the line maintaining part 611A being bent to form towards the rear of Y direction.Line maintaining part 611A is the pole shape along Y direction.

In addition, 2 side edge part 611Aa, 611Ab of the left and right of the outer peripheral face of line maintaining part 611A are relative with the relative 621A of portion, the 622A of fixing holding member 62A respectively.

Fixing holding member 62A is configured near the right side of needle bar pedestal 31.In addition, 2 the relative 621A of portion, the 622A of fixing holding member 62A, all form parallel with Y direction and with respect to the slightly tabular of low dip of Z-direction, top each other connects integratedly to become roughly the mode of U-shaped from Y direction observation.And fixing holding member 62A utilizes support portion 625A to be fixed on the sewing machine stand of face 105.

In addition, the connecting portion of 2 the relative 621A of portion, 622A is formed as semicircle tubular, is formed with the through wires hole 623A of the U1 insertion of reaching the standard grade that makes suture needle 11 sides and the through wires hole 624A that the U2 that reaches the standard grade of suture needle 12 sides is inserted along running through this connecting portion up and down.

Through wires hole 623A, 624A are all formed as the slit-shaped along X-direction.In addition, in the scope till through wires hole 623A is formed on from the connecting portion of the relative 621A of portion, 622A to the 621A of portion relatively, in the scope till through wires hole 624A is formed on from the connecting portion of the relative 621A of portion, 622A to the 623A of portion relatively.

Thus, through wires hole 623A can be by the U1 that reaches the standard grade inserting from top, to the first threading portion guiding between the side edge part 611Aa on the left side of the outer peripheral face of the relative 621A of portion and line maintaining part 611A, through wires hole 624A can be by the U2 that reaches the standard grade inserting from top, to the second threading portion guiding between the side edge part 611Ab in the left side of the outer peripheral face of the relative 622A of portion and line maintaining part 611A.

Because being arranged on along X-direction, movable holding member 61A carries out on the needle bar pedestal 31 of reciprocally swinging, so in the time utilizing switching drive division 34 to select suture needle 11, if make the bottom of needle bar pedestal 31 to right-hand swing, edge, the right side 611Ab of line maintaining part 611A and the relative 622A of the portion side contacts of fixing holding member 62A of movable holding member 61A.Its result, the U2 that reaches the standard grade of suture needle 12 sides that do not use becomes by the state of they clampings, can resist the enhancing action of Libra 141 and the U2 that prevents from reaching the standard grade is extracted from suture needle 12.

In addition, due in the time utilizing switching drive division 34 to select suture needle 12, the bottom of needle bar pedestal 31 swings to left, so the side edge part 611Aa of a side of line maintaining part 611A and the relative 621A of the portion side contacts of a side of fixing holding member 62A of movable holding member 61A.Its result, the U1 that reaches the standard grade of suture needle 11 sides that do not use becomes by the state of they clampings, can resist the enhancing action of Libra 141 and the U1 that prevents from reaching the standard grade is extracted from suture needle 11.

The in the situation that of above-mentioned line holding device 60A, can the right side of configured in one piece at needle bar pedestal 31 will be installed, can be arranged on from Libra 141 until be arranged near needle bar line guide portion 36 suture needle 11,12 thread path midway, therefore, can successfully guide the U1 that reaches the standard grade, U2.

In addition, application of the present invention is not limited to above-mentioned embodiment, can suitably change without departing from the spirit and scope of the invention.

Claims

1. a two-needle sewing machine, it switches to any one needle bar in 2 needle bars is driven by operating or setting, and the suture needle that utilizes the needle bar of selecting to have is made,

It is characterized in that having:

2. two-needle sewing machine according to claim 1, is characterized in that,

Described control module, the running-active status of described two-needle sewing machine with set by described setup unit make unusual pattern when consistent, the running-active status that is judged as this two-needle sewing machine be make abnormal.

3. two-needle sewing machine according to claim 1 and 2, is characterized in that,

4. two-needle sewing machine according to claim 1 and 2, is characterized in that,

It is abnormal that what described control module judged make, comprise reaching the standard grade of passing in the suture needle in action stops sewed up and the backward error of threading at least one.

5. two-needle sewing machine according to claim 4, is characterized in that,

6. two-needle sewing machine according to claim 4, is characterized in that,

7. two-needle sewing machine according to claim 6, is characterized in that,