CN105862276A - Sewing machine - Google Patents

Abstract

The invention provides a sewing machine which shortens the sewing starting end of the lower thread of an item to be sewed. The sewing machine (10), in which a needle hole (15) is formed in a needle plate (17) or in a feed tooth (14), comprises a lower thread insertion mechanism (2), a sewing starting end holding mechanism (50), a first thread cutting device (60), and a control device (110). The lower thread insertion mechanism inserts the sewing starting end of the lower thread (D) into the needle hole from the lower side, the sewing starting end holding mechanism holds the sewing starting end of the lower thread passed through the needle hole at the upper side of the needle plate, the first thread cutting device cuts off the sewing starting end of the lower thread held by the sewing starting end holding mechanism, and the control device controls operations of the sewing machine. The sewing starting end holding mechanism (50) holds the lower thread passing through the needle hole by means of the thread insertion mechanism (2), and the lower thread is cut by the first thread cutting device (60) to shorten the sewing starting end of the lower thread.

Description

Sewing machine

Technical field

The present invention relates to a kind of sewing machine possessing thread cutter.

Background technology

Existing sewing machine possesses the seizure mechanism that reaches the standard grade, and this seizure mechanism that reaches the standard grade, in the downside of needle plate, utilizes and catches parts Catch, from the suture needle of the pin that falls carrying out the first pin, the sewing starting end reached the standard grade, after the pin that falls of several pins, discharge the sewing reached the standard grade open Top portion, prevents the sewing starting end reached the standard grade from extracting from the needle downing position of the first pin due to mentioning of Libra, sews Bad.

The parts that catch of this seizure mechanism have the opposite face can being contacting and separating each other, stitch between opposite face The pin that falls of pin, and, when the sewing starting end reached the standard grade is pulled out by the pointed end side of still, by opposite face Guan Bi on carrying out The seizure of the sewing starting end of line.

But, if carrying out the seizure of the sewing starting end reached the standard grade in the manner described above, then the sewing starting end reached the standard grade Portion can hang down longer from the needle downing position of first pin at the back side of cloth.

Therefore, reach the standard grade in seizure mechanism existing, reduce the seizure parts after the pin that falls of the first pin compared with generally Retentivity in opposite face and retentivity is regulated so that mentioning by Libra, make the sewing starting end reached the standard grade Portion, will not slide from the degree that seizure parts are all extracted, catches length and shortens (for example, referring to patent documentation 1).

Patent documentation 1: Japanese Unexamined Patent Publication 2006-320365 publication

But, above-mentioned existing sewing machine, although carried out the consideration for the sewing reached the standard grade starting end being shortened, but About rolling off the production line, sewing starting end still remains, and owing to hanging down longer from sewn object, therefore causes the fall of quality of sewing Low.It addition, for the raising realizing quality of sewing, it is necessary to after sewing, manually the sewing starting end rolled off the production line is cut by operation Disconnected, cause the increase of homework burden.

Summary of the invention

It is an object of the invention to, the sewing starting end rolled off the production line of residual at sewn object is shortened.

The invention that technical scheme 1 is recorded,

A kind of sewing machine, it is formed with pin hole at needle plate or feeding tooth,

This sewing machine is characterised by possessing:

Roll off the production line interposer, and it has blower mechanism, this blower mechanism utilize sewing starting end that air makes to roll off the production line from The most lateral described pin hole inserts；

Sewing starting end maintaining body, its in the upside of described needle plate to through the sewing rolled off the production line described in described pin hole Starting end keeps；

First thread cutter, it will be by the sewing starting end rolled off the production line described in the holding of described sewing starting end maintaining body Portion cuts off；And

Controlling device, it carries out the action control of sewing machine.

The invention that technical scheme 2 is recorded is characterised by, in the sewing machine that technical scheme 1 is recorded,

Described blower mechanism possesses the nozzle sprayed by air towards described pin hole, this nozzle have in leading section make described The slit portion that the sewing starting end rolled off the production line passes.

The invention that technical scheme 3 is recorded is characterised by, in the sewing machine that technical scheme 1 or 2 is recorded,

Described sewing starting end maintaining body possesses sliding panel, and this sliding panel is formed along glide direction and reaches the standard grade with arranging Catching hole and roll off the production line catching hole, can clip and keep between the opposite face and described sliding panel of described needle plate described in roll off the production line Sewing starting end and the sewing starting end reached the standard grade,

Described sliding panel can move to following position, i.e. described in reach the standard grade that catching hole and described pin hole overlap reach the standard grade slotting Enter position, described in roll off the production line that catching hole and described pin hole overlap roll off the production line on position and described in roll off the production line catching hole and described on The retreating position that both line catching hole separate from described pin hole.

The invention that technical scheme 4 is recorded is characterised by, in the sewing machine that technical scheme 3 is recorded,

Described sliding panel, at described retreating position, clips and protects between the opposite face and described sliding panel of described needle plate The sewing starting end reached the standard grade described in holding and described in the sewing starting end that rolls off the production line,

Described control device controls described sewing machine in the following manner, i.e. make described sliding panel before the pin that falls of the first pin Roll off the production line described in being positioned on position, utilize described blower mechanism make described in the sewing starting end that rolls off the production line from lower lateral described pin After hole and the described catching hole that rolls off the production line are inserted, make described sliding panel be positioned at described in reach the standard grade on position, by described first pin The sewing starting end falling pin and reach the standard grade described in making, after described pin hole and described catching hole of reaching the standard grade insert, makes described sliding panel position In described retreating position, described first thread cutter is utilized to carry out on described after the pin that falls of fall pin and second pin of the second pin The sewing starting end of line and described in the cut-out of sewing starting end rolled off the production line.

The invention that technical scheme 5 is recorded is characterised by, in the sewing machine that technical scheme 3 or 4 is recorded,

The cutting knife of described first thread cutter is arranged in the lower section compared with described sliding panel,

This sewing machine possesses thread drawing mechanism, and when described sliding panel is in described retreating position, this thread drawing mechanism is downwards Mobile, to the sewing starting end reached the standard grade described in being pulled out by described sliding panel and described in the sewing starting end that rolls off the production line carry out Pull so that it is engage with described first thread cutter,

Described control device controls described sewing machine in the following manner, i.e. after making described thread drawing mechanism move downwards, Utilize described first thread cutter carry out described in the sewing starting end reached the standard grade and described in the cutting of sewing starting end rolled off the production line Disconnected.

The invention that technical scheme 6 is recorded is characterised by, in the sewing machine recorded any one of technical scheme 3 to 5,

Possess the second thread cutter, this second thread cutter by the cut-out of rolling off the production line of sewing finishing, and, will cut off after under The end of the still side of line keeps as the sewing starting end sewed next time,

The described interposer that rolls off the production line has:

Keeping cancel system, it releases by described second thread cutter holding shape to the described sewing starting end rolled off the production line State；And

Collection line mechanism, its by the described sewing starting end line concentration rolled off the production line in the downside of described pin hole.

The invention that technical scheme 7 is recorded is characterised by, in the sewing machine that technical scheme 6 is recorded,

Described collection line mechanism has hub member, and this hub member is mobile by advancing, and the described sewing rolled off the production line is started End line concentration in the downside of described pin hole,

This hub member possesses: the first rake, its be formed at leading section and make described in the sewing starting end that rolls off the production line to Top is mobile；Recess, it is formed at the top of described leading section and catches the described sewing starting end rolled off the production line；And Second rake, it is formed at the inner side of this recess and the sewing starting end that rolls off the production line described in making moves downwards,

Compared with the upper end of described first rake, the upper end of described second rake is formed higher.

The invention that technical scheme 8 is recorded is characterised by, in the sewing machine that technical scheme 6 or 7 is recorded,

Described control device controls described sewing machine in the following manner, i.e. utilize described blower mechanism make described in roll off the production line Sewing starting end from lower lateral described pin hole and described roll off the production line catching hole insert before, described collection line mechanism is driven and By the described sewing starting end line concentration rolled off the production line in the downside of described pin hole, and, described holding cancel system is driven And release by described second thread cutter hold mode to the described sewing starting end rolled off the production line.

The effect of invention

The sewing machine of the present invention, utilizes the interposer that rolls off the production line the sewing starting end rolled off the production line to be blown afloat from downside and be inserted into Pin hole, sewing starting end maintaining body keeps this sewing starting end rolled off the production line in the upside of needle plate, and the first thread cutter will The sewing starting end rolled off the production line kept is cut off, therefore, it is possible to cut off the sewing starting end rolled off the production line from sewn object, and not Depend on manual working, it is possible to the sewing starting end rolled off the production line of residual at sewn object shortened, it is possible to realize sewed product The raising of matter.Further, since need not manual working, therefore, it is possible to eliminate the negative of the cut-out operation of the sewing starting end rolled off the production line Load.

Accompanying drawing explanation

Fig. 1 is the side view of the structure of the suture needle periphery representing comprehensive conveying sewing machine.

Fig. 2 is the top view of the end with opposition side, side, longitudinal body portion of the base portion of sewing machine.

Fig. 3 is the block diagram of the control system representing sewing machine.

Fig. 4 is the side view of the structure representing horizontal container periphery.

Fig. 5 is the oblique view of collection line mechanism.

Fig. 6 is the top view of collection line mechanism.

Fig. 7 (A) is that the amplification representing the position before and after the action being in the line concentration hook in the case of lower position of rolling off the production line is overlooked Figure, Fig. 7 (B) is the amplification plan view representing the position before and after the action being in the line concentration hook in the case of high position of rolling off the production line.

Fig. 8 is the oblique view of the structure of the fallback state of the nozzle representing blower mechanism and horizontal container periphery.

Fig. 9 is the oblique view of the structure of the entrance state of the nozzle representing blower mechanism and horizontal container periphery.

Figure 10 is the oblique view of the nozzle of flat pattern.

Figure 11 is the sectional view of the nozzle of flat pattern.

Figure 12 is the oblique view of round nozzle.

Figure 13 is the sectional view of round nozzle.

Figure 14 is the top view of needle plate.

Figure 15 is the stravismus of the needle plate periphery that the cut-out action to the sewing starting end rolling off the production line and reaching the standard grade is indicated Figure.

Figure 16 is the needle plate that the cut-out action to the sewing starting end rolling off the production line and reaching the standard grade after Figure 15 is indicated The oblique view of periphery.

Figure 17 is the needle plate that the cut-out action to the sewing starting end rolling off the production line and reaching the standard grade after Figure 16 is indicated The oblique view of periphery.

Figure 18 is the needle plate that the cut-out action to the sewing starting end rolling off the production line and reaching the standard grade after Figure 17 is indicated The oblique view of periphery.

Figure 19 is the needle plate that the cut-out action to the sewing starting end rolling off the production line and reaching the standard grade after Figure 18 is indicated The oblique view of periphery.

Figure 20 is the needle plate that the cut-out action to the sewing starting end rolling off the production line and reaching the standard grade after Figure 19 is indicated The oblique view of periphery.

The oblique view of first thread cutter of Figure 21.

Figure 22 is the oblique view of the thread cutting action representing the movable cutting knife of the first thread cutter and fixed cutting tool.

Figure 23 is the oblique of the thread cutting action of the movable cutting knife of the first thread cutter after representing Figure 22 and fixed cutting tool View.

Figure 24 is the oblique of the thread cutting action of the movable cutting knife of the first thread cutter after representing Figure 23 and fixed cutting tool View.

Figure 25 is the side view of the thread cutting action representing the movable cutting knife of the first thread cutter and fixed cutting tool.

Figure 26 (A) is the action specification figure of the cut-out action representing the sewing starting end rolling off the production line and reaching the standard grade, Figure 26 (B) Being the action specification figure after Figure 26 (A), Figure 26 (C) is the action specification figure after Figure 26 (B).

Figure 27 (A) is the action of the cut-out action of the sewing starting end rolling off the production line and reaching the standard grade after representing Figure 26 (C) Explanatory diagram, Figure 27 (B) is the action specification figure after Figure 27 (A), and Figure 27 (C) is the action specification figure after Figure 27 (B).

Figure 28 (A) is the action of the cut-out action of the sewing starting end rolling off the production line and reaching the standard grade after representing Figure 27 (C) Explanatory diagram, Figure 28 (B) is the action specification figure after Figure 28 (A), and Figure 28 (C) is the action specification figure after Figure 28 (B).

Figure 29 is the action specification of the cut-out action of the sewing starting end rolling off the production line and reaching the standard grade after representing Figure 28 (C) Figure.

Figure 30 is the flow chart of the control of the cut-out action representing the sewing starting end rolling off the production line and reaching the standard grade.

Figure 31 is the oblique view of other examples of thread drawing mechanism.

Figure 32 is the top view of other examples of sewing starting end maintaining body.

Figure 33 is the oblique view of other examples of sewing starting end maintaining body.

Figure 34 is the oblique view limiting plate representing bracing wire parts.

The explanation of label

10 sewing machines

11 suture needles

14 feeding teeth

15 pin holes

17 needle plates

18 horizontal containers

19 trapping mechanisms

2 roll off the production line interposer

20 keep cancel system

30 collection line mechanisms

31 line concentration hooks (hub member)

40 blower mechanisms

41 nozzles

411 slit portions

42 nozzles

421 slit portions

50,50A starting end maintaining body

51,51A sliding panel

511 first peristomes (catching hole of reaching the standard grade)

512 second peristomes (roll off the production line catching hole)

60 first thread cutters

61 movable cutting knifes

62 fixed cutting tools

621 crook

70 second thread cutters

71 movable cutting knifes

72 fixed cutting tools

73 plate-shaped springs

80,80A thread drawing mechanism

81 bracing wire parts

81A the first bracing wire parts

83A the second bracing wire parts

85A, 86A limit plate

110 control device

117 sewing machine electromotors

C cloth (sewn object)

Detailed description of the invention

[outline of sewing machine]

Below, referring to the drawings, the sewing machine 10 of the present invention is illustrated.Sewing machine 10 is so-called comprehensive conveying sewing Machine, as it is shown in figure 1, possess: needle bar and suture needle 11, they move up and down, and, swing (ginseng along cloth conveying direction According to Figure 18)；Conveying foot 12, it synchronously moves up and down with needle bar and swing front and back；Presser feet foot 13, it is with defeated Foot 12 is sent to be alternately carried out moving up and down；And feeding tooth 14, it is Tong Bu with needle bar, periodically moves along conveying direction.

I.e., comprehensively conveying sewing machine is formed with the through hole 12a making suture needle 11 insert, at feeding tooth at conveying foot 12 The pin hole 15 making suture needle 11 insert it is formed with at 14.

Further, when suture needle 11 and conveying foot 12 decline, feeding tooth 14 rises, and all of which is towards cloth conveying side Forward side moves.Thus, cloth by conveying foot 12 and feeding tooth 14 clamps, while penetrated by suture needle 11 and to cloth The front side conveying of material conveying direction.

It addition, presser feet foot 13 declines when suture needle 11 and conveying foot 12 rise, press from top in presser feet foot 13 The period of compress material, suture needle 11 and conveying foot 12 retreat, and again carry sewn object and carry out falling pin.

Additionally, in the case of comprehensive conveying sewing machine, carrying out being formed with at the feeding tooth 14 of circular motion pin hole 15, The position of pin hole 15 changes together with the circular motion of feeding tooth 14, but in the following description, as to pin hole 15 Between the description that illustrates of relative position relationship, as long as no special reason, be to be positioned at upper shaft angle with feeding tooth 14 Premised on spending the position of pin hole 15 in the case of 0 ° (needle bar top dead centre).

It addition, sewing machine 10 possesses whole as comprehensively carrying the structure that sewing machine is generally had, such as, needle bar Reciprocating mechanism, the conveying mechanism of cloth, the drive mechanism of still, line adjustor, Libra etc., but these are known structures, Therefore detailed description is omitted.

It addition, in the following description, when sewing machine 10 is positioned on horizontal plane, it is set to above vertical On " ", it is set to D score by below vertical, cloth conveyance direction downstream side is set to " front ", by cloth conveying direction upstream side (behaviour Author side) it is set to " afterwards ", when towards front, left-hand side is set to " left ", by right-hand side when towards front It is set to " right ".

Fig. 2 is the top view of the end with longitudinal body portion opposition side, side (left side) of the base portion 16 of sewing machine 10, saves Upper face shield and the diagram of internal a part of structure are omited.It addition, Fig. 3 is the integrally-built block diagram representing sewing machine.

As it can be seen, sewing machine 10 possesses: needle plate 17, it is arranged at the top in sewing machine base portion 16；Horizontal container 18, its It is arranged at the lower right side of needle plate 17；Roll off the production line interposer 2, and the sewing starting end rolled off the production line is inserted into pin hole 15 by it from downside； Sewing starting end maintaining body 50, the sewing rolled off the production line and reach the standard grade through pin hole 15 is opened respectively by it in the upside of needle plate 17 Top portion keeps；First thread cutter 60, sewing starting end maintaining body 50 sewing rolled off the production line kept is opened by it Top portion cuts off；Second thread cutter 70, it is by the cut-out of rolling off the production line of sewing finishing, and, the still side rolled off the production line after cutting off End keeps as the sewing starting end sewed next time；Thread drawing mechanism 80, it will be by sewing starting end maintaining body The sewing starting end reached the standard grade and roll off the production line that the sliding panel 51 of 50 pulls out along glide direction pulls downwards；Trapping mechanism 19, The excision sheet rolling off the production line and reaching the standard grade after being excised by the first thread cutter 60 is trapped by it；And controlling device 110, it is right Each structure of sewing machine 10 is controlled.

It addition, the above-mentioned interposer 2 that rolls off the production line forms following structure, i.e. have: keeping cancel system 20, it will be by second The hold mode of the thread cutter 70 sewing starting end to rolling off the production line releases；Collection line mechanism 30, its sewing starting end that will roll off the production line Portion's line concentration is in the downside of pin hole 15；And blower mechanism 40, its utilize air to make hold mode be released from after the sewing rolled off the production line Starting end is inserted into pin hole 15.

It addition, as illustrated as the former, sewing machine 10 possesses the mechanisms such as following: pin reciprocating mechanism, it is to needle bar and seam Pin 11 gives and moving up and down and the swing of fore-and-aft direction；Presser feet reciprocating mechanism, it makes conveying foot 12 and presser feet foot Portion 13 alternately moves up and down；Distribution conveyor structure, it makes feeding tooth 14 pass in and out from the opening of needle plate 17, and, along the most defeated Send；And container mechanism, horizontal container 18 rotates driving with two speeds moved up and down of suture needle 11 by it, and these mechanisms are all with sewing Electric motor is as common driving source.

Hereinafter, above-mentioned each structure is illustrated successively.

[the second thread cutter]

Fig. 4 is the side view of the structure representing horizontal container 18 periphery, and Fig. 8 is oblique view.As shown in Fig. 2～Fig. 4 and Fig. 8, Second thread cutter 70 is configured at the lower position compared with needle plate 17 and is configured at front relative to pin hole 15.Further, second cut Line apparatus 70 possesses: hook-shaped movable cutting knife 71；Fixed cutting tool 72, it is fixed on sewing machine stand；And plate-shaped springs 73, it will Movable cutting knife 71 is pressed into fixed cutting tool 72 side.

This second thread cutter 70 after the pin that falls of last pin, to from pin hole 15 cross over to horizontal container 18 reach the standard grade and Roll off the production line and catch and cut off, and, the end rolled off the production line after cutting off is kept.This lower thread end becomes and sews next time Time sewing starting end.

Movable cutting knife 71 longer at fore-and-aft direction and by its leading section towards under rearward state via connecting rod and second Tangent line solenoid 74 links, and carries out following reciprocating action, i.e. utilize the second tangent line solenoid 74 to advance towards rear, to reaching the standard grade And roll off the production line and carry out catching and be back to towards front the position of lower section.

Therefore, the leading section of movable cutting knife 71 is sharp shape, is formed about hook-shaped return in leading section, is returning The inner side in the portion of returning is formed with the blade tip cutting blade towards front.

Fixed cutting tool 72 is configured at the upside of movable cutting knife 71, and its lower surface connects with the upper surface slide of this movable cutting knife 71 Touch.Fixed cutting tool 72 is directed towards the cantilever beam-like extended at rear, is formed with blade tip in its leading section towards rearward cutting blade.By This, will be utilized what return captured reaching the standard grade and rolling off the production line, in reciprocal return road by movable cutting knife 71 in reciprocal outlet The cutting blade of movable cutting knife 71 and the cutting blade of fixed cutting tool 72 is utilized to sandwich and cut off.

Plate-shaped springs 73 presses upward from the downside of movable cutting knife 71, therefore, it is possible to by movable cutting knife 71 to fixed cutting tool 72 pressings, prevent from producing between them gap, it is possible to carry out more reliable cut-out.

It addition, utilize plate-shaped springs 73, it is possible to (sewing sewed is opened in the end of the still side rolled off the production line after cutting off next time Top portion) clip and be maintained between movable cutting knife 71 and plate-shaped springs 73, it is possible to the institute of the sewing starting end clearly rolled off the production line In position.

[collection line mechanism]

Collection line mechanism 30 has following function, it may be assumed that guided the sewing starting end rolled off the production line to suitably by blower mechanism 40 Position, enable to make the sewing starting end rolled off the production line to insert upward through pin hole 15；And from horizontal container 18 Internal bobbin extracts rolling off the production line of suitable length out.

Fig. 5 is the oblique view of collection line mechanism 30, and Fig. 6 is the amplification representing the position before and after the action of line concentration hook 31 described later Top view, Fig. 7 is the explanatory diagram of the action rolled off the production line of the front end representing line concentration hook 31.As shown in Fig. 2 and Fig. 5, line concentration Mechanism 30 is configured at the position lower than needle plate 17, is configured at rear and the configuration somewhat kept left relative to pin hole 15.

Above-mentioned collection line mechanism 30 possesses: as the line concentration hook 31 of hub member, and it passes through moving back and forth to from horizontal container 18 Leap catches to the sewing starting end rolled off the production line of the second thread cutter 70；First line concentration cylinder 32, it makes this line concentration hook 31 retreat moves；Gripper shoe 33, collection line mechanism 30 entirety is supported by it；Support member 34, it can make the first line concentration gas Cylinder 32 slides along prescribed direction relative to gripper shoe 33；And the second line concentration cylinder 35, it makes the first collection relative to gripper shoe 33 Line cylinder 32 back and forth drives along aforesaid prescribed direction.

Gripper shoe 33 is installed in the way of becoming level relative to sewing machine base portion 16, is formed the first line concentration cylinder The elongated hole 331 that the moving back and forth direction of 32 guides.This elongated hole 331 along right diagonally forward to formation, if the first line concentration cylinder 32 are released by the second line concentration cylinder 35, then advance and move to the direction close to right.

Support member 34 is made up of holding plate and not shown slide mass, this holding plate in the rear side of gripper shoe 33 by One line concentration cylinder 32 keeps it is not fallen off, and this slide mass slides in elongated hole 331, can retreat with the first line concentration cylinder 32 Link with gripper shoe 33 movably.

The the first line concentration cylinder 32 supported by gripper shoe 33, with advance and retreat direction and the length direction of line concentration hook 31 of its plunger Consistent state is kept, it addition, the advance and retreat direction of plunger is oblique along the right side that right side composition compared with aforesaid elongated hole 331 is less Front side.

Utilize the first and second line concentration cylinders 32,35, make line concentration hook 31 the most tiltedly move forward with two stages from retreating position Dynamic.

In Fig. 6 by line concentration hook 31 shown in solid and roll off the production line, it is shown that make first and second both line concentration cylinder 32,35 Position under the state of forward drive, by the line concentration hook 31 shown in double dot dash line and roll off the production line, it is shown that from making two line concentration cylinders 32, the state of 35 forward drive rises, the position under the state only making the second line concentration cylinder 35 retrogressing.

Line concentration hook 31 is farthest by advancing, thus its leading section arrives and crosses over to the second thread cutter 70 from horizontal container 18 The position intersected of rolling off the production line.

It addition, by from the state making both the first and second line concentration cylinders 32,35 advance, only make the second line concentration cylinder 35 retreat such that it is able to by the line concentration that rolls off the production line crossed over to the second thread cutter 70 from horizontal container 18 in the nozzle at blower mechanism 40 The path passed through between leading section and the pin hole 15 of 41.

The leading section of line concentration hook 31, as it is shown in fig. 7, possess: the first rake 311, it is formed at leading section and makes to roll off the production line Sewing starting end be moved upward；Recess 312, it is formed at the top of leading section and enters the sewing starting end rolled off the production line Row catches；Second rake 313, its be formed at the rear end portion side (opposition side of side, leading section) at the inner side of this recess 312 and The sewing starting end rolled off the production line is made to move downwards；And the 3rd rake 314, its in recess 312 with the second rake 313 Relatively, in the leading section of this line concentration hook 31, compared with the upper end of the first rake 311, the upper end of the second rake 313 Formed higher.

First rake 311, as shown in tilt angle theta 1, is acute angle, tilts along along with the direction risen towards rear, Rolling off the production line of abutting with the first rake 311 when the advance of line concentration hook 31 can be boosted upward.

Second rake 313, as shown in tilt angle theta 2, is obtuse angle, tilts along along with the direction declined towards rear, It addition, the upper end of the second rake 313 is formed higher compared with the upper end of the first rake 311.Therefore, at line concentration hook 31 advance time, it is possible to make to be rolled off the production line decline by what the first rake 311 boosted and guide in recess 312.

3rd rake 314, as shown in tilt angle theta 3, is obtuse angle, tilts along along with the direction declined towards rear, Its upper end and the first rake 311 are identical height.Therefore, when the retrogressing of line concentration hook 31, to guiding to recess 312 Rolling off the production line and catch, preventing from rolling off the production line unexpectedly comes off from recess 312.

According to these construct, line concentration hook 31 roll off the production line be in the position lower than the upper end of the first rake 311 time, as figure Shown in 7 (A), by the advance of line concentration hook 31, it is possible to making to roll off the production line abuts with the first rake 311 and boost upward, and, profit Carry out catching with the second rake 313 and be directed in recess 312.Further, if making line concentration hook 31 retreat, then in recess 312 Roll off the production line and can be caught by the 3rd rake 314, keep in the way of recess 312 comes off preventing.Additionally, in recess 312 Roll off the production line and utilize blower mechanism described later to be blown afloat upward, now move along the 3rd rake 314, therefore become and will not hamper Hinder the structure of movement.

It addition, be in the position higher than the upper end of the first rake 311 and lower than the second rake 313 rolling off the production line In the case of position, as shown in Fig. 7 (B), by the advance of line concentration hook 31, it is possible to make to roll off the production line and directly support with the second rake 313 Connect and be directed in recess 312.The action the rolled off the production line during retrogressing of line concentration hook 31 is identical with the situation of Fig. 7 (A).

[blower mechanism]

Fig. 8 is the oblique view of the fallback state of the nozzle 41 representing blower mechanism 40, and Fig. 9 is the spray representing blower mechanism 40 The oblique view of the entrance state of mouth 41.

As shown in these figures, blower mechanism 40 possesses: nozzle 41, its from pin hole 15 underneath towards this pin hole 15, in the past End ejection air；Nozzle maintaining part 43, it detachably keeps nozzle 41, and with the supply source (compressor etc.) of air Connect；Nozzle lift cylinder 44, it is mobile that it makes nozzle 41 retreat via nozzle maintaining part 43；And switching valve 45, it is to from sky The supply source of gas switches over (with reference to Fig. 3) to supply and the stopping of the air of nozzle maintaining part 43.

Nozzle maintaining part 43 possesses: the nozzle insertion section 431 of tubular；And frame portion 432, it is by this nozzle insertion section 431 Link with the plunger of nozzle lift cylinder 44.

Nozzle insertion section 431 can make nozzle 41 insert, it is possible to utilizes screw to be fixed nozzle 41.It addition, pass through Screw spiral shell is gone out such that it is able to easily carry out the dismounting of nozzle 41, it is also possible to be replaced by circle described later from the nozzle 41 of flat pattern The nozzle 42 of type.

It addition, this nozzle maintaining part 43 is hose connection with what air supplied, it is possible to utilize the air of supply to carry out air Ejection from the leading section of nozzle 41.

The nozzle 41 kept by nozzle maintaining part 43 become towards front tiltedly on state.Further, nozzle lift cylinder 44 Nozzle 41 can be given retreating along the direction identical with the length direction of nozzle 41 and move by plunger.Further, as it is shown in figure 9, In the entrance state of the plunger of nozzle lift cylinder 44, it is possible to be set to the leading section of nozzle 41 close with the underface of pin hole 15 State.

Nozzle 41, as shown in figs.10 and 11, has its leading section peristome approximately along the flat pattern of left and right directions, energy Reach compressed air and blow out at high speed.It addition, the intermediate formation at the width of the leading section of nozzle 41 has slit portion 411, The sewing starting end rolled off the production line can be contained in inner side when the entrance of nozzle 41 is mobile.That is, with when the entrance of nozzle 41, The mode of slit portion 411 just it is contained in by the sewing starting end rolled off the production line of line concentration hook 31 line concentration of aforesaid collection line mechanism 30 It is configured with blower mechanism 40.

It addition, nozzle 41 can be replaced by the round nozzle 42 shown in Figure 12 and Figure 13.This round nozzle 42 is also It is formed with slit portion 421, it is possible to house and roll off the production line in its leading section.

This round nozzle 42 becomes wider due to peristome, therefore, it is possible to blow out on a large scale.

[holding cancel system]

Keeping cancel system 20, as shown in Fig. 4 and Fig. 8, possess: latch for printed circuit 21, it is by the second thread cutter 70 Plate-shaped springs 73 engages；And releasing cylinder 22, it makes latch for printed circuit 21 lift.

Latch for printed circuit 21 configures along vertical above-below direction, and its upper end is bent into right angle to the right.Further, latch for printed circuit 21 The kink 211 of upper end be configured to, from the upper surface of top and the pars intermedia of the length direction of plate-shaped springs 73 close to also Relatively.

Release cylinder 22 and can be in the position close and relative with the upper surface of plate-shaped springs 73 to making kink 211 The direction that latch for printed circuit 21 declines is driven, via latch for printed circuit 21 by the most drop-down for plate-shaped springs 73.

Drop-down by this, the leading section of plate-shaped springs 73 separates from movable cutting knife 71, will and movable cutting knife 71 between folded The sewing starting end the rolled off the production line release held.

[needle plate]

Figure 14 is the top view of needle plate 17.Needle plate 17 be the upper surface in sewing machine base portion 16 flatly install rectangular The flat board of shape, by the direction on its long limit along the longitudinal direction in the way of configured.

Needle plate 17 is formed with the peristome 171 of the rectangle making feeding tooth 14 pass in and out at the central part of upper surface, with this opening Portion 171 is conjointly formed with otch 172, and this otch 172 is for configuring the movable cutting knife 61 of the first thread cutter 60 and fixing Cutting knife 62 and bracing wire parts 81.They are formed relative to needle plate 17 up/down perforation.

It addition, in the front side of peristome 171, be conjointly formed with sewing starting end described later with this peristome 171 and protect Hold the guiding groove 173 of the sliding panel 51 of mechanism 50.This guiding groove 173 is equal with peristome about 171 width.

[sewing starting end maintaining body]

Sewing starting end maintaining body 50 possesses: sliding panel 51, and it is formed for respectively to reaching the standard grade and rolling off the production line First peristome 511 and second that sewing starting end carries out keeping, as reach the standard grade catching hole and the catching hole that rolls off the production line is opened Oral area 512 (with reference to Figure 15～Figure 20)；First Line keeps cylinder 52, and it gives the action of fore-and-aft direction to sliding panel 51；And Second line keeps cylinder 53, and it keeps cylinder 52 to give the action (with reference to Fig. 3) of fore-and-aft direction to sliding panel 51 and First Line.

Sliding panel 51 is the flat board of the strip extended as the crow flies, configures along the longitudinal direction in the guiding groove 173 of needle plate 17. Rearward end at sliding panel 51 is formed through the first peristome 511 keeping the sewing starting end reached the standard grade, than The most forward position of rearward end is formed through the second peristome 512 keeping the sewing starting end rolled off the production line.

First or second peristome 511,512, by movable, is positioned the surface of pin hole 15 by sliding panel 51, The sewing starting end rolling off the production line or reaching the standard grade is made forwards to move, thus, by the sewing starting end of roll off the production line D or the U that reaches the standard grade after inserting Sandwich between the inner surface of the lower surface of sliding panel 51 and the guiding groove 173 of needle plate 17 and keep.

Above-mentioned sliding panel 51, first, at the on position that rolls off the production line carrying out relative to pin hole 15 positioning by the second peristome 512 Place, inserts (Figure 16) by the sewing starting end of the D that rolls off the production line blown afloat by blower mechanism 40, move towards front from this state and Become the on position of reaching the standard grade (Figure 19) that the first peristome 511 is carried out to be positioned relative to pin hole 15.At on position of reaching the standard grade, The sewing starting end of D of rolling off the production line is clipped and is held between sliding panel 51 and needle plate 17, and, the sewing starting end of the U that reaches the standard grade Portion is inserted into.After the U that reaches the standard grade inserts, till sliding panel 51 moves further into the retreating position in front, become at sliding panel The state (Figure 20) of the sewing starting end of roll off the production line D and the U that reaches the standard grade is maintained between 51 and needle plate 17.

Therefore, sliding panel 51 needs at the on position that rolls off the production line, reaches the standard grade between on position and retreating position these three position Move location.

Above-mentioned First Line keeps cylinder 52, and its plunger directly links with sliding panel 51, carries out sliding panel 51 from above-mentioned Line on position is to the movement reached the standard grade between on position.

Second line keeps cylinder 53, its plunger and First Line to keep the main body of cylinder 52 directly to link, carry out sliding panel 51 and First Line keep cylinder 52 from position of reaching the standard grade to the movement between retreating position.

Additionally, First Line keeps cylinder 52 can also form following structure, i.e. utilize the cunning that can move along the longitudinal direction Dynamic guide portion etc. is supported in sewing machine base portion 16.

[the first thread cutter]

Figure 21 is the oblique view of the first thread cutter 60, Figure 22～Figure 24 be the first thread cutter 60 movable cutting knife 61 with And the oblique view of fixed cutting tool 62, Figure 25 is subsequent figures.

First thread cutter 60 possesses: movable cutting knife 61, it is the longest and has towards the right side in right part The blade tip of side；Fixed cutting tool 62, it is the longest and has crook 621 in right part；And the first tangent line gas Cylinder 63, it gives the moving back and forth of left and right directions (with reference to Fig. 3) to movable cutting knife 61.

The blade tip of the leading section of movable cutting knife 61 is flat in the longitudinal direction, and superposed configuration is on fixed cutting tool 62. It addition, the base end part of movable cutting knife 61 is fastened by screw and is fixed on gripper shoe 64, this gripper shoe 64 is installed on the first tangent line The plunger of cylinder 63.

Further, movable cutting knife 61, when non-severed, is positioned at sliding panel 51 and fixed cutting tool in the otch 172 of needle plate 17 The left of 62, moves to the right when cutting off and enters the downside of sliding panel 51.

Fixed cutting tool 62 is formed with the blade tip towards left in the inner side of the crook 621 of its right part, makes fixed cutting tool The blade tip of 62 and the blade tip of movable cutting knife 61 will enter rolling off the production line and reach the standard grade and clipping and cut off of the inner side of crook 621.

Fixed cutting tool 62 extends compared with the movable cutting knife 61 during non-severed to the right, to enter the downside of sliding panel 51 State configured.

[thread drawing mechanism]

Thread drawing mechanism 80, as shown in Figure 22～Figure 25, possesses: bracing wire parts 81, its D that rolls off the production line to being held in sliding panel 51 And the sewing starting end of the U that reaches the standard grade carries out catching and pulling downwards；And bracing wire cylinder 82, it makes bracing wire parts 81 along rule Fixed stayguy direction moves (with reference to Fig. 3).

Bracing wire parts 81 possess: maintaining part 811, the sewing starting end of its be pressurized from above by rolling off the production line D and the U that reaches the standard grade；Pawl Portion 812, it bends downwards in the leading section (right part) of this maintaining part 811, carries out keeping so that the D and the U that reaches the standard grade that rolls off the production line Sewing starting end will not come off from maintaining part 811；And extension 813, it is (left oblique to stayguy direction from maintaining part 811 Lower direction) extend, the base end part of extension 813 links with the plunger of bracing wire cylinder 82.

The leading section of bracing wire parts 81 forms following configuration, i.e. with the fixed cutting tool 62 of aforesaid first thread cutter 60 Nearby side adjacent.Further, bracing wire parts 81 are shaped generally as U-shaped by maintaining part 811, claw 812 and extension 813, with Within it make sliding panel 51 by by the way of configure.Therefore, following state is become, i.e. if sliding panel 51 moves to front Retreating position and the sewing starting end of roll off the production line D and the U that reaches the standard grade is kept, then this sewing rolling off the production line D and the U that reaches the standard grade is opened Top portion passes through in the inner space of U-shaped.

Now, as shown in figure 22, the sewing starting end of D and the U that reaches the standard grade is rolled off the production line relative to the crook of fixed cutting tool 62 621 and be positioned at upper right, therefore cannot cut off the most in this condition.

But, bracing wire parts 81, as shown in figure 25, utilize bracing wire cylinder 82 and tiltedly downside moves towards a left side, therefore, As shown in figure 23, it is possible to the sewing starting end of roll off the production line D and the U that reaches the standard grade is drawn in the crook 621 being sticked in fixed cutting tool 62 Inner side.

Thus, by making movable cutting knife 61 move to the left such that it is able to the sewing of carry out rolling off the production line D and the U that reaches the standard grade starts The cut-out of end.

[trapping mechanism]

Trapping mechanism 19 is configured at inside and the lower section of the first thread cutter 60 in sewing machine base portion 16.This catcher Structure 19 possesses: framework, and its top has carried out opening；Fan 191, it is arranged at framework internal (with reference to Fig. 3)；And catcher, The excision sheet rolling off the production line and reaching the standard grade being attracted in framework is trapped by it, it is possible to make catcher by the driving of fan 191 Excision sheet is trapped.

[control system of sewing machine]

Based on Fig. 3, the control system of sewing machine is described.

The control device 110 of sewing machine 10 is by components described below schematic configuration, it may be assumed that ROM 112, and its storage, storage control, sentence The various programs of the various process such as disconnected；CPU 111, it carries out various calculation process according to these various programs；RAM 113, It uses as the working storage in various process；EEPROM 114, it stores various stitch datas and sets Given data.

Further, control device 110 to be connected with components described below via system bus and drive circuit etc., it may be assumed that become seam The sewing machine electromotor 117 in driving source of system, the releasing cylinder 22 of holding cancel system 20, the first line concentration gas of collection line mechanism 30 Cylinder 32 and the second line concentration cylinder 35, the nozzle lift cylinder 44 of blower mechanism 40 and switching valve 45, starting end holding machine The First Line of structure 50 keep cylinder 52 and the second line keep the first tangent line cylinder 63 of cylinder the 53, first thread cutter 60, the Second tangent line solenoid 74 of two thread cutters 70, the bracing wire cylinder 82 of thread drawing mechanism 80, the fan 191, defeated of trapping mechanism 19 Enter the startup pedal 116 etc. of the beginning of the operation inputting part 115 of various operations, input sewing.

Additionally, control device 110 actually to make releasing cylinder the 22, first line concentration cylinder the 32, second line concentration cylinder 35, Nozzle lift cylinder 44, First Line keep cylinder the 52, second line to keep cylinder the 53, first tangent line cylinder the 63, second tangent line helical The electromagnetic valve that pipe 74 and bracing wire cylinder 82 are operated respectively is controlled, but here omits the diagram of each electromagnetic valve.

It addition, sewing machine electromotor 117, fan 191 are controlled via drive circuit, but its diagram is also carried out province Slightly.

[cutting-off controlling of sewing starting end]

Figure 30 is the flow chart of cutting-off controlling of sewing starting end of D and the U that reaches the standard grade of rolling off the production line.It is based primarily upon Figure 15～figure The oblique view of 20, the action specification figure of Figure 26～Figure 29 and the flow chart of Figure 30, to the sewing machine 10 being made up of said structure The cut-out of the sewing starting end controlling roll off the production line D and the U that reaches the standard grade performed by device 110, that carry out when the beginning of sewing Control illustrates.Additionally, in Figure 26～Figure 29, label C represents sewn object i.e. cloth.

In the cut-out action of sewing starting end described below, premised on following state, i.e. initially Sewing machine electromotor 117 is in stopping when needle bar is positioned at top dead centre, and is made down by the front sewing once carried out The leading section of line is clamped by the second thread cutter 70.It addition, be controlled in the following manner, i.e. the power supply at sewing machine is Under the state of OFF, sliding panel 51 is positioned at retreating position (Figure 26 (A)), if the power supply of sewing machine becomes ON, then sliding panel 51 to The on position (Figure 26 (B)) that rolls off the production line carries out position and moves.In the following description, the power supply at sewing machine becomes the state of ON Under, illustrate from the state that sliding panel 51 moves to the on position that rolls off the production line.

First and second line holding cylinder 52,53 is set to entrance state, and sliding panel 51 is positioned at the second peristome 512 and pin The on position that rolls off the production line (step S 1 of Figure 30) that hole 15 overlaps.Now, bracing wire cylinder 82 is in entrance state, bracing wire parts 81 It is positioned at the upside (Figure 15) of sliding panel 51.

Further, as shown in Figure 4, the sewing starting end rolled off the production line to the second thread cutter 70 is crossed over relative to from horizontal container 18 Portion, is set to entrance state by first and second line concentration cylinder 32,35 of collection line mechanism 30, makes line concentration hook 31 forwards enter.By This, after catching, in recess 312, the sewing starting end rolled off the production line, be only set to fallback state by the second line concentration cylinder 35. Thus, pull in the following manner, i.e. roll off the production line and extracted out from horizontal container 18, and, become the sewing starting end rolled off the production line and exist The path that the underface of pin hole 15 is passed through.

Then, the nozzle lift cylinder 44 of blower mechanism 40 is set to entrance state, makes nozzle 41 increase, make nozzle 41 Leading section is close to rolling off the production line and pin hole 15.

Further, by the releasing cylinder 22 keeping cancel system 20 is set to fallback state, latch for printed circuit 21 is made to decline, from And will be released by the hold mode of the second thread cutter 70 sewing starting end to rolling off the production line.Further, cutting blower mechanism 40 Change valve 45 to be controlled and switch to the supply condition of air.Its result, the sewing starting end of the D that rolls off the production line is dried and from pin hole The lower section of 15 is upwards blown afloat, and becomes state (Figure 16, Figure 26 (B), the Figure 30 being inserted into pin hole 15 and the second peristome 512 Step S5).

Then, First Line keeps cylinder 52 be set to fallback state, make sliding panel 51 move to the first peristome 511 and pin The on position of reaching the standard grade (Figure 17, Figure 26 (C), step S7 of Figure 30) that hole 15 overlaps.Thus, roll off the production line the sewing starting end quilt of D It is held between sliding panel 51 and needle plate 17.It addition, now, nozzle lift cylinder 44 is set to fallback state.Make nozzle 41 times Fall.

Then, make sewing machine electromotor 117 be driven and start to sew (step S9 of Figure 18, Figure 30).

Thus, suture needle 11 declines, and carries out the pin that falls of the first pin, and the U that reaches the standard grade enters the first peristome 511 and pin hole 15, quilt The most advanced and sophisticated hook of the horizontal container 18 rotated, the sewing starting end quilt of the U that reaches the standard grade is started by the driving of sewing machine electromotor 117 The downside (Figure 19, Figure 27 (A)) drawn in pin hole 15.

Then, rise in suture needle 11 and the second line is kept cylinder 53 to be set to fallback state by the timing extracted from pin hole 15, Sliding panel 51 is made to move to retreating position (Figure 20, Figure 27 (B), step S11 of Figure 30).

Thus, the sewing starting end of roll off the production line D and the U that reaches the standard grade forwards is pulled out, and becomes the downside at bracing wire parts 81 The state extended before and after it.

Then, bracing wire cylinder 82 is set to fallback state, makes bracing wire parts 81 decline (Figure 27 (C), the step of Figure 30 S13)。

Thus, bracing wire parts 81, as shown in figure 23, become following state, i.e. the sewing to roll off the production line D and the U that reaches the standard grade starts End catches, and pulls downwards, draws in the crook 621 of the fixed cutting tool 62 of the first thread cutter 60 Side.

Then, continue through that sewing machine electromotor 117 carries out handles the needle, and carries out the pin that falls (Figure 28 (A)) of the second pin.

Now, bracing wire cylinder 82 maintains fallback state, bracing wire parts 81 to continue the sewing of roll off the production line D and the U that reaches the standard grade to start End gives pull-in forces downwards.Therefore, following state is become, i.e. if sewing carries out and makes cloth C advance, then roll off the production line D And the U that reaches the standard grade produces additional length and correspondingly makes bracing wire parts 81 decline (Figure 28 (B)) further, will roll off the production line D and the U that reaches the standard grade Sewing starting end be pulled further into the inner side of the crook 621 to fixed cutting tool 62.

During this period, control device 110 continuation supervision and make the position residing for needle bar by the driving of sewing machine electromotor 117 Put, continue waiting for the 3rd pin suture needle mention timing (step S15 of Figure 30).

If the timing of mentioning of the suture needle of above-mentioned 3rd pin arrives, then the needle downing position of the first pin becomes the first thread cutter The surface of the line off-position of 60.In this timing, the first tangent line cylinder 63 of the first thread cutter 60 is set to entrance state, So that before movable cutting knife 61 and then the cut-out of sewing starting end of carry out rolling off the production line D and the U that reaches the standard grade (Figure 24, Figure 28 (C), is schemed Step S17 of 30).

If the sewing starting end of roll off the production line D and the U that reaches the standard grade is cut off in above-mentioned timing, then the seam of the U that can make to reach the standard grade Starting end processed is the shortest.It addition, be formed without knotting at the first pin, thus while the pin position that falls of the D the second pin from cloth C that rolls off the production line Put and hang down, but still be able to shorten the sewing starting end of the D that rolls off the production line fully.

Additionally, in the case of the sewing starting end of the D that rolls off the production line more preferentially is shortened by hope, at upper the 4th pin once Suture needle mention timing perform line cut off.

Then, after sewing finishing, first and second line holding cylinder 52,53 is set to entrance state, makes sliding panel 51 The mobile on position that rolls off the production line (step S19 of Figure 29, Figure 30) overlapped with pin hole 15 to the second peristome 512.Meanwhile, make The fan 191 of trapping mechanism 19 works (step S21 of Figure 30).

Thus, sliding panel 51 the excision sheet of roll off the production line D and the U that reaches the standard grade that keep is released and falls, and be captured mechanism 19 Trapping.

Thus, the cutting-off controlling of sewing starting end of D and the U that reaches the standard grade of rolling off the production line terminates.

[technique effect of the embodiment of invention]

Sewing machine 10 possesses: roll off the production line interposer 2, and the sewing starting end of the D that rolls off the production line is inserted into pin hole from downside by it；Seam Starting end maintaining body 50 processed, the sewing starting end of the D that rolls off the production line through pin hole 15 is protected by it in the upside of needle plate 17 Hold；And first thread cutter 60, the sewing starting end of its D that rolls off the production line that will be kept by sewing starting end maintaining body 50 is cut Disconnected.

Therefore, it is possible to the sewing starting end of the D that rolls off the production line of residual at cloth C is cut off shorter, it is possible to realize sewing The raising of quality.

It addition, sewing machine 10 has the second thread cutter 70, the D that rolls off the production line of sewing finishing is cut by this second thread cutter 70 Disconnected, and, the end of the still side of the D that rolls off the production line after cutting off keeps as the sewing starting end sewed next time, rolls off the production line slotting Enter mechanism 2 to have: keeping cancel system 20, it will be sewed the holding shape of starting end by the second thread cutter 70 to the D that rolls off the production line State releases；Collection line mechanism 30, its by the sewing starting end line concentration of the D that rolls off the production line in the downside of pin hole 15；And blower mechanism 40, its The sewing starting end of the D that rolls off the production line after utilizing air to make hold mode be released from is inserted into pin hole 15.

Thus, when sewing finishing, it is possible to the end of the still side of the D that rolls off the production line is protected as sewing starting end next time Hold.Further, it is possible to by keeping cancel system 20, collection line mechanism 30, the co-operating of blower mechanism 40, the sewing of the D that makes to roll off the production line Starting end is automatically inserted to pin hole.

Further, accompany with this, from the sewing starting end of the D that rolls off the production line that pin hole 15 inserts upward, by sewing starting end Maintaining body 50 keeps, the first thread cutter 60 cut off, therefore, it is possible to automatically carry out above-mentioned a series of action, energy Enough realize the alleviating of homework burden, the raising of working performance.

It addition, the collection line mechanism 30 of sewing machine 10 has line concentration hook 31, this line concentration hook 31 is mobile by advancing, and will roll off the production line D Sewing starting end line concentration in the downside of pin hole 15, this line concentration hook 31 possesses: the first rake 311, it is formed at leading section And the sewing starting end of the D that makes to roll off the production line is moved upward；Recess 312, it is formed at the top of leading section and sewing to the D that rolls off the production line Starting end catches；And second rake 313, it is formed at the inner side of this recess 312 and the sewing of the D that makes to roll off the production line starts End is moved downwards, in this line concentration hook 31, compared with the upper end of the first rake 311, and the upper end of the second rake 313 Portion is formed higher.

Thereby, it is possible to make can the top/bottom latitude of the seizure that the D that rolls off the production line sews starting end be broadened by line concentration hook 31, More reliably the D that rolls off the production line can be guided to the lower section of pin hole 15.

It addition, the blower mechanism 40 of sewing machine 10 possesses nozzle 41,42, they spray air towards pin hole 15, this nozzle 41,42 have the slit 411,421 that the sewing starting end of D that makes to roll off the production line passes in leading section.

Therefore, the sewing starting end of the D that rolls off the production line can be guided in slit 411,421 when the rising of nozzle 41,42 And keep, it is possible to more reliably the sewing starting end of the D that rolls off the production line is blown afloat so that it is insert to pin hole 15.

It addition, the sewing starting end maintaining body 50 of sewing machine 10 possesses sliding panel 51, this sliding panel 51 is along slip side It is formed with the first peristome 511 and the second peristome 512, by overlap from the second peristome 512 and pin hole 15 to arrangement The on position that rolls off the production line rises and slides such that it is able to clip and be held in sliding panel 51 and pin by the sewing starting end of the D that rolls off the production line Between the opposite face of plate 17, by sliding from the on position of reaching the standard grade that the first peristome 511 and pin hole 15 overlap, thus The sewing starting end of roll off the production line D and the U that reaches the standard grade can be clipped and is held between the opposite face of sliding panel 51 and needle plate 17.

Therefore, it is possible to both sewing starting end of roll off the production line D and the U that reaches the standard grade are kept by parts, it is achieved The minimizing of number of components, and, accompany with this, it is achieved the miniaturization of mechanism, densification.

It addition, in sewing machine 10, sliding panel 51 is to the conveying mechanism of the cloth i.e. conveyance direction downstream side of feeding tooth 14 Slide, the holding of the sewing starting end of carry out reaching the standard grade U and the D that rolls off the production line, the first thread cutter 60 is configured relative to pin hole 15 Conveyance direction downstream side in the feeding tooth 14 of conveying mechanism.

Further, control device 110 to be controlled in the following manner, i.e. utilize sewing starting end maintaining body 50, Carry out before the pin that falls of the first pin rolling off the production line the holding of sewing starting end of D, and the sewing of the U that carries out reaching the standard grade after the pin that falls of the first pin is opened The holding in top portion, utilize the first thread cutter 60 to carry out reaching the standard grade after the pin that falls of fall pin and second pin of the second pin and under The cut-out of the sewing starting end of line.

Thereby, it is possible to make the root portion of the sewing starting end of roll off the production line D and the U that reaches the standard grade that hang down from cloth and be positioned at cloth First thread cutter 60 in downstream of the conveying direction of material is close, rolling off the production line and reaching the standard grade in cloth side residual after cutting off Sewing starting end becomes shorter.

It addition, the movable cutting knife 61 of the first thread cutter 60, fixed cutting tool 62 are configured at and sliding panel 51 by sewing machine 10 The lower section compared, and possess thread drawing mechanism 80, this thread drawing mechanism 80 by by sliding panel 51 along glide direction pull out reach the standard grade U and The sewing starting end of D of rolling off the production line pulls downwards.

Therefore, it is possible to will not contact with cloth with movable cutting knife 61, the fixed cutting tool 62 of the first thread cutter 60 and cause The mode of damage etc. configures and realizes the protection of cloth, and can by the sewing starting end of roll off the production line D and the U that reaches the standard grade suitably Mobile to movable cutting knife 61, fixed cutting tool 62, it is possible to carry out more reliable cut-out.

[other examples of thread drawing mechanism]

Above-mentioned thread drawing mechanism 80 by bracing wire parts 81 by the sewing starting end of roll off the production line D and the U that reaches the standard grade to first Fixed cutting tool 62 side of thread cutter 60 is pulled but it also may use two bracing wire parts.

That is, the anchoring 80A shown in Figure 31 possesses: the first bracing wire parts 81A, it has maintaining part 811A, claw 812A and extension 813A；Second bracing wire parts 83A, it has maintaining part 831A, claw 832A and extension 833A；First draws Line cylinder 82A, the second bracing wire parts 83A is supported by it, risen by maintaining part 831A making the second bracing wire parts 83A and Maintaining part 811A of the first bracing wire parts 81A is carried out face contact；And the second bracing wire cylinder 84A, it is to the first bracing wire portion Part 81A, the second bracing wire parts 83A and the first bracing wire cylinder 82A are supported, and make them lift.

In said structure, by the first bracing wire cylinder 82A is set to entrance state such that it is able to make the second bracing wire parts Maintaining part 831A of 83A rises and crimps with maintaining part 811A of the first bracing wire parts 81A, it is possible between which to the D that rolls off the production line And the sewing starting end of the U that reaches the standard grade clamps.

Further, when clamping the sewing starting end of roll off the production line D and the U that reaches the standard grade, by by the second bracing wire cylinder 84A Be set to fallback state such that it is able to by the sewing starting end of roll off the production line D and the U that reaches the standard grade to the cutting knife 61 of the first thread cutter 60, 62 sides pull.

It is as noted previously, as while the sewing starting end of roll off the production line D and the U that reaches the standard grade being clamped, while pulling, therefore The sewing starting end being prevented from rolling off the production line and reaching the standard grade unexpectedly comes off from each bracing wire parts 81A, 83A, carries out more reliably Bracing wire action.

[other examples of sewing starting end maintaining body]

Above-mentioned sewing starting end maintaining body 50 possesses the sliding panel 51 of linearity, but its shape is not limited to directly Wire.Such as, as shown in Figure 32 and Figure 33, it would however also be possible to employ the sewing starting end of the sliding panel 51A possessing arc-shaped is protected Hold mechanism 50A.

This sewing starting end maintaining body 50A possesses: First Line holding cylinder 52A, wherein, and will be as catching hole of reaching the standard grade And the first peristome 511A and the second peristome 512A of the catching hole that rolls off the production line is formed at one end of sliding panel 51A of arc-shaped Portion and the vicinity of one end, this First Line holding cylinder 52A can be rotationally to slip as center of rotation with the center of circular arc Plate 51A is supported, and, give rotating to the input arm 54A linked coaxially with sliding panel 51A and carry out rotating and move Make；And second line keep cylinder 53A, it makes along the direction that the moving direction of plunger keeping cylinder 52A with First Line is identical It is mobile that this First Line keeps cylinder 52A to retreat.

In this case, slip is configured in the way of being positioned at by pin hole 15 on the circumference of the circular arc comprising sliding panel 51A Plate 51A, input arm 54A and First Line keep the plunger of cylinder 52A to be configured to carry out linking by axle and elongated hole and pass through circle Arc Admissible displacement also carries out the structure linked.

It addition, configure each structure in the following manner, i.e. keep cylinder 52A and the second line to keep cylinder 53A two at First Line When person is for entrance state, pin hole 15 overlaps with the second peristome 512A of sliding panel 51A, at First Line holding cylinder 52A and the When two wires keeps any one of cylinder 53A to be entrance state, pin hole 15 overlaps with the first peristome 511A, keeps gas at First Line When cylinder 52A and the second line keep cylinder 53A to be fallback state, become the position that the entirety of sliding panel 51A departs from from pin hole 15 Put i.e. retreating position.

Thus, starting end maintaining body 50A is in the same manner as starting end maintaining body 50, by each line is kept cylinder 52A, 53A are controlled such that it is able to the on position of the sewing starting end of the D that switches to sliding panel 51A to roll off the production line, reach the standard grade U The on position of sewing starting end and retreating position.

It addition, in the case of sliding panel is linearity, it is necessary to relative to the front of pin hole 15 by the configuration of sliding panel 51 Space guarantees bigger, but in the case of sliding panel 51A is arc-shaped, it is possible to reduce carry out relative to the front of pin hole 15 The space of configuration, it is achieved densification.

[the restriction plates of bracing wire parts]

If using the sliding panel 51A of above-mentioned arc-shaped, the most as shown in figure 34, each peristome 511A, 512A enter along circular arc Row is mobile, therefore when sewing the holding of starting end, the D that rolls off the production line, the U that reaches the standard grade sewing starting end from fore-and-aft direction right to the left Pulled to (as shown in figure 34, for left side in the case of sliding panel 51A bends to the left) deviation.

It addition, sliding panel 51A is owing to being bending, if do not set by the width of the maintaining part 811 of bracing wire parts 81 The width counting than sliding panel 51A is big, then cannot pass through in inner side.

Thus, roll off the production line the end of left and right directions of maintaining part 811 of sewing starting end and bracing wire parts 81 of D, the U that reaches the standard grade Get too close to, even if bracing wire parts 81 move along prescribed direction, it is also possible to cannot be by the sewing starting end of roll off the production line D or the U that reaches the standard grade Portion is appropriately guided to the inner side of the crook 621 of fixed cutting tool 62.

Therefore, in the case of the sliding panel 51A using arc-shaped, the preferably one side in direction before and after bracing wire parts 81 Side arranges restriction plate 85A, 86A, and they carry out being limited so that the sewing starting end rolling off the production line and reaching the standard grade is with sliding panel 51A's Width is compared and is moved the most in the lateral direction.

Additionally, it is preferred that at the restriction plate 85A of the internal side diameter of the bending direction becoming sliding panel 51A, in order to make to roll off the production line D with And the sewing starting end of the U that reaches the standard grade is not drilled down into and arranges inclination 851A.Additionally, due to roll off the production line, the sewing of D and the U that reaches the standard grade is opened Top portion is difficult to, near outside diameter, therefore to omit the restriction plate 86A of outside diameter.

[other examples of maintaining body]

The kink 211 of the upper end of latch for printed circuit 21 is configured to, from below close to and with the length of plate-shaped springs 73 The lower surface of the pars intermedia in degree direction is relative.

In the case of such a construction, be supported in the way of becoming the state of separation not by external force time can for plate-shaped springs 73 The lower section of dynamic cutting knife 71, releases cylinder 22 to making in kink 211 position close and relative with the lower surface of plate-shaped springs 73 The direction that residing latch for printed circuit 21 rises is driven, and plate-shaped springs 73 is pushed upward via latch for printed circuit 21.Further, By this pushing, movable cutting knife 71 is pressurizeed by the leading section of plate-shaped springs 73, to clamped between movable cutting knife 71 The sewing starting end rolled off the production line keeps.

It addition, when the holding that will roll off the production line releases, be driven releasing cylinder 22, by drop-down for latch for printed circuit 21 and carry out Separate such that it is able to will be released to the pressurization of plate-shaped springs 73 by latch for printed circuit 21.

[other]

As sewing machine 10, exemplified with comprehensively carrying sewing machine but it also may do not carry out other sewing swung at needle bar In machine (such as, sewing machine for covering chain stitch etc.), application carries out the holding of sewing starting end and respectively the tying of cut-out rolled off the production line and reach the standard grade Structure.

It addition, the situation that pin hole 15 is formed at feeding tooth 14 is illustrated, but it is not limited to this, it is also possible at pin The holding of the sewing starting end that application carries out rolling off the production line and reaching the standard grade and each of cut-out it is formed with in the sewing machine of pin hole at plate Structure.

Claims (8)

1. a sewing machine, it is formed with pin hole at needle plate or feeding tooth,

This sewing machine is characterised by possessing:

Roll off the production line interposer, and it has blower mechanism, and this blower mechanism utilizes sewing starting end that air makes to roll off the production line from downside Insert to described pin hole；

Sewing starting end maintaining body, it starts through the sewing rolled off the production line described in described pin hole in the upside of described needle plate End keeps；

First thread cutter, it will be cut by the sewing starting end rolled off the production line described in the holding of described sewing starting end maintaining body Disconnected；And

Controlling device, it carries out the action control of sewing machine.

Sewing machine the most according to claim 1, it is characterised in that

Described blower mechanism possesses the nozzle sprayed by air towards described pin hole, this nozzle leading section have make described in roll off the production line The slit portion that passes of sewing starting end.

Sewing machine the most according to claim 1 and 2, it is characterised in that

Described sewing starting end maintaining body possesses sliding panel, and this sliding panel is formed with, along glide direction arrangement, seizure of reaching the standard grade Hole and roll off the production line catching hole, can clip and keep between the opposite face and described sliding panel of described needle plate described in the sewing rolled off the production line Starting end and the sewing starting end reached the standard grade,

Described sliding panel can move to following position, i.e. described in reach the standard grade the insertion position of reaching the standard grade that catching hole and described pin hole overlap Put, described in roll off the production line that catching hole and described pin hole overlap roll off the production line on position and described in roll off the production line catching hole and described reaching the standard grade is caught Catch the retreating position that both holes separate from described pin hole.

Sewing machine the most according to claim 3, it is characterised in that

Described sliding panel, at described retreating position, clips between the opposite face and described sliding panel of described needle plate and keeps institute State the sewing starting end reached the standard grade and described in the sewing starting end that rolls off the production line,

Described control device controls described sewing machine in the following manner, i.e. make described sliding panel be positioned at before the pin that falls of the first pin The described on position that rolls off the production line, utilize described blower mechanism make described in the sewing starting end that rolls off the production line from lower lateral described pin hole and After the described catching hole that rolls off the production line is inserted, make described sliding panel be positioned at described in reach the standard grade on position, at the pin that falls by described first pin And the sewing starting end reached the standard grade described in making is after described pin hole and described catching hole of reaching the standard grade insert, described sliding panel is made to be positioned at institute State retreating position, utilize after the pin that falls of fall pin and second pin of the second pin described first thread cutter carry out described in reach the standard grade Sewing starting end and described in the cut-out of sewing starting end rolled off the production line.

Sewing machine the most according to claim 3, it is characterised in that

The cutting knife of described first thread cutter is arranged in the lower section compared with described sliding panel,

This sewing machine possesses thread drawing mechanism, and when described sliding panel is in described retreating position, this thread drawing mechanism moves downwards, To the sewing starting end reached the standard grade described in being pulled out by described sliding panel and described in the sewing starting end that rolls off the production line pull, It is made to engage with described first thread cutter,

Described control device controls described sewing machine in the following manner, i.e. after making described thread drawing mechanism move downwards, utilizes Described first thread cutter carry out described in the sewing starting end reached the standard grade and described in the cut-out of sewing starting end rolled off the production line.

Sewing machine the most according to claim 3, it is characterised in that

Possess the second thread cutter, this second thread cutter by the cut-out of rolling off the production line of sewing finishing, and, rolling off the production line after cutting off The end of still side keeps as the sewing starting end sewed next time,

The described interposer that rolls off the production line has:

Keeping cancel system, it releases by described second thread cutter hold mode to the described sewing starting end rolled off the production line； And

Collection line mechanism, its by the described sewing starting end line concentration rolled off the production line in the downside of described pin hole.

Sewing machine the most according to claim 6, it is characterised in that

Described collection line mechanism has hub member, and this hub member is mobile, by the described sewing starting end rolled off the production line by advancing Line concentration in the downside of described pin hole,

This hub member possesses: the first rake, its be formed at leading section and make described in the sewing starting end that rolls off the production line upward Mobile；Recess, it is formed at the top of described leading section and catches the described sewing starting end rolled off the production line；And second Rake, it is formed at the inner side of this recess and the sewing starting end that rolls off the production line described in making moves downwards,

Compared with the upper end of described first rake, the upper end of described second rake is formed higher.

Sewing machine the most according to claim 6, it is characterised in that

Described control device controls described sewing machine in the following manner, i.e. utilize described blower mechanism make described in the seam that rolls off the production line Starting end processed from lower lateral described pin hole and described roll off the production line catching hole insert before, described collection line mechanism is driven and by institute State the sewing starting end line concentration rolled off the production line in the downside of described pin hole, and, described holding cancel system is driven and solves Except by described second thread cutter hold mode to the described sewing starting end rolled off the production line.