CN101104982B - Single-ring sewing machine for sewing button - Google Patents

Abstract

The present invention provides a single-ring sewing machine for sewing button, which is arranged with the following structure: the sewing machine can ensure the sewing treatment of the sewing machine during button sewing to correspond to requirement, and can switch between the condition of forming line head and non forming line head. The sewing machine is arranged with a structure for switching cutting treatment and snapping treatment. The cutting treatment is that to cut off the suture by the motion of a movable cutter (93) after the suture forming a line knot when finishing button (121) sewing; the snapping treatment is that to snap the line knot part by means of a strain applied on the suture after forming a line knot when finishing button (121) sewing.

Description

Single-ring sewing machine for sewing button

Technical field

The present invention relates to a kind of single-ring sewing machine for sewing button, it has the structure of the suture processing unit after can switching button and making.

Background technology

Current, do not have in the single-ring sewing machine for sewing button of tangent line with cutting knife, for example,, after forming toe-in, pull suture through the final stage of making at nail catcher, be utilized in above-mentioned toe-in and partly go up the tension force of concentrating effect and break suture, carry out tangent line.

But owing on the toe-in part, break in the method for suture, suture is broken on very near the part of toe-in, so form the end of a thread (from the line of toe-in to line end) hardly.Therefore, inferior in the situation that the situation of toe-in compactness difference or toe-in compactness because friction etc. fluff, produce the problem that generation suture easily bursts at the seams.

So single-ring sewing machine for sewing button in recent years has the cutting knife that tangent line is used, for example, through the final stage of making at nail catcher, after forming toe-in, the cutting knife that uses above-mentioned tangent line to use cuts off suture, carries out tangent line (for example, the referenced patent document 1).

Patent documentation 1: the spy opens flat 2-177995 communique

Summary of the invention

Really, if use tangent line to cut off suture, then can form the end of a thread of the physical thickness size of the cutting knife of using more than or equal to needle plate and tangent line with cutting knife.So this end of a thread is suitable aspect bursting at the seams at the line that can prevent nail catcher.

But; Existence is following true, and under the situation of the clothing that the direct contacting skins of consideration possibility such as for example shirt are worn, feeling of the end of a thread contacting skin is not good; Perhaps under the situation of the clothing of paying attention to design, owing to the reason that in design, does not conform with demand avoids occurring the end of a thread.

So, the objective of the invention is to, a kind of single-ring sewing machine for sewing button is provided, it has following structure: the suture of the Sewing machines in can nail catcher being made is handled corresponding with demand, switches situation that forms the end of a thread and the situation that does not form the end of a thread.

To achieve these goals, technical scheme 1 related single-ring sewing machine for sewing button of the present invention does, it is through 1 suture needle moving up and down and the co-operating of rotary type looper; Utilize monocycle to make button is made on sewn object, have: tangent mechanism, it can cut off handles and breaks processing; This cut-out is treated to, and after suture forms toe-in when the button sewing finishing, cuts off suture through making movable cutting knife action; This is broken and is treated to; After suture forms toe-in when the sewing finishing of button, apply tension force, utilize this tension force and break the toe-in part to suture; And connect mechanism, processing is handled and broken to its associated configuration thereby can switch above-mentioned cut-out on tangent mechanism.

Specifically; Shown in the record of technical scheme 2; The structure of single-ring sewing machine for sewing button does, has: tangent mechanism (91～94), and it is configuring fixed cutting knife (94) below needle plate; Dispose movable cutting knife (93) at leading section; On base portion, form and cut off linking part (90a) and break linking part (90b), this cut-out linking part (90a) is used for and makes the action component (84) that moves through the transmission of drive source drives power when accomplishing at above-mentioned button linking, and this is broken linking part (90b) and is used for linking with the fixed part (85c) that is fixed on the sewing machine stand; Clamp (102), it can keep suture in the supply route of reaching the standard grade; And hoisting mechanism (50,52,53,151,152), it can keep button on leading section, through being that center of rotation is rotated with the base portion; Can promote the front that keeps above-mentioned button, when cutting off processing, above-mentioned cut-out linking part and above-mentioned action component linked; Make the action interlock of above-mentioned movable cutting knife and above-mentioned action component; Clamping applies the suture of tension force by above-mentioned clamp between itself and said fixing cutting knife, cuts off, and is breaking when handling; Make above-mentioned break linking part and the binding of said fixing parts; The action of above-mentioned movable cutting knife is stopped, and the button after being made by above-mentioned lift mechanism lifts simultaneously utilizes the tension force that above-mentioned clamp applies and breaks suture.

At this moment, shown in technical scheme 3 is recorded and narrated, has the line maintaining body; It can catch, decontrol 1 suture of wire loop; When catching, wire loop is remained on assigned position, above-mentioned line maintaining body is caught 2 pins the 1st wire loop to the sewn object pulling before of a pin in the end; When in the end a pin fell pin, the 2nd wire loop after above-mentioned the 1st wire loop was decontroled before sewn object pulls.

The effect of invention

As noted above; According to single-ring sewing machine for sewing button of the present invention; The suture of the Sewing machines in can button being made is handled corresponding with demand and is switched to situation that forms the end of a thread and the situation that does not form the end of a thread easily, as options, can make the toe-in of suture be difficult to unclamp.

Description of drawings

Fig. 1 is one of oblique view of the related single-ring sewing machine for sewing button of embodiment of the present invention.

Fig. 2 be the related single-ring sewing machine for sewing button of embodiment of the present invention oblique view two.

Fig. 3 cuts off suture in the related single-ring sewing machine for sewing button of embodiment of the present invention to want portion's amplification oblique drawing under the situation of processing.

Fig. 4 breaks suture in the related single-ring sewing machine for sewing button of embodiment of the present invention to want portion's amplification oblique drawing under the situation of processing.

Fig. 5 is the oblique view of the arm of the related single-ring sewing machine for sewing button of embodiment of the present invention.

Fig. 6 is the figure of the forming process of the toe-in in the expression embodiment of the present invention, (A) is profilograph, (B) is to want portion's oblique view.

Fig. 7 is the figure of the forming process of the toe-in in the expression embodiment of the present invention, (A) is profilograph, (B) is to want portion's oblique view.

Fig. 8 is the figure of the forming process of the toe-in in the expression embodiment of the present invention, (A) is profilograph, (B) is to want portion's oblique view.

Fig. 9 is the figure of the forming process of the toe-in in the expression embodiment of the present invention, (A) is profilograph, (B) is to want portion's oblique view.

Figure 10 is the figure of the forming process of the toe-in in the expression embodiment of the present invention, (A) is profilograph, (B) is to want portion's oblique view.

Figure 11 is the figure of the forming process of the toe-in in the expression embodiment of the present invention, (A) is profilograph, (B) is to want portion's oblique view.

Figure 12 is the figure of the forming process of the toe-in in the expression embodiment of the present invention, (A) is profilograph, (B) is to want portion's oblique view.

Figure 13 is the figure of the forming process of the toe-in in the expression embodiment of the present invention, (A) is profilograph, (B) is to want portion's oblique view.

Figure 14 is the figure of the forming process of the toe-in in the expression embodiment of the present invention, (A) is profilograph, (B) is to want portion's oblique view.

Figure 15 is the profilograph (figure of the state after the suture processing is carried out in expression through the cut-out of embodiment of the present invention) of the toe-in that formed by embodiment of the present invention of expression.

Figure 16 is that explanation is carried out the summary profilograph that suture is handled through the cut-out of embodiment of the present invention.

Figure 17 is that explanation is carried out the summary profilograph that suture is handled through breaking of embodiment of the present invention.

Figure 18 is the profilograph that explanation is corresponding with Figure 15, carry out the toe-in state after the suture processing through breaking of embodiment of the present invention.

The specific embodiment

Fig. 1 to Fig. 5 is the key diagram of wanting portion's structure of the single-ring sewing machine for sewing button (below abbreviate Sewing machines as) of this embodiment of expression.

This Sewing machines is the Sewing machines that is called as circulating sewing machine; Its utilization makes the driving of 1 circulation of the mechanism of the rotary body rotation with eccentric rotating shaft; The monocycle that is implemented in the regulation of making button on the sewn object is made, and has simultaneously to be used for after making button, carrying out the mechanism that suture is handled.

In addition, additional disclosure in the Sewing machines of this embodiment, is handled as the suture after the button sewing finishing; Have to switch and cut off processing and break the structure of processing, this cut-out is treated to, when above-mentioned button is made completion, after suture forms toe-in; Through making above-mentioned movable cutting knife action cut off above-mentioned suture, this is broken and is treated to, when above-mentioned button is made completion; After suture forms toe-in, apply tension force to suture, be utilized in toe-in and partly go up the external force that produces and break suture.

Fig. 1 and Fig. 2 are the integrally-built oblique views of the Sewing machines of this embodiment of explanation.In above-mentioned figure, for ease, should single Sewing machines be divided into 2 accompanying drawings and represent, dotted line A and A ', dotted line B and B ' and dotted line C and C ' expression are for ease and the state that separates.

The Sewing machines of this embodiment is as shown in Figure 1, has belt 10, and above-mentioned belt 10 is passed to drive pulley 11 with the revolving force of not shown drive source.Drive pulley 11 can be supported on the driving shaft 12 with rotating freely, fixing cam 13, eccentric cam 14, angular gear 15 and the tangential cam 16 of cutting off on driving shaft 12.

In addition; The Sewing machines of this embodiment have can rotate freely the partition framework 20 that supported by not shown sewing machine stand; Cut off on the leading section of framework 20 at this; Via buffer unit 21, cut off hook (hook) 22 being provided with along the mode that arrow D direction is free to slide, its leading section 22a ends with the cam part 13a card that cuts off cam 13.

The fixing axle 23 that cuts off on the fulcrum 20a that cuts off framework 20, the fixing control wrist 24 that cuts off on the other end 23a that cuts off axle 23.

Engagement angular gear 30 on angular gear 15.This angular gear 30 is fixed on looper (looper) axle 31.At the fixing rotary type looper 32 of an end of this looper axle 31, fixing worm screw 33 on the other end.

Be fixed on the camshaft 41 with the worm gear 40 of these worm screw 33 engagements.Fixedly left and right sides feed cam 43, front and back feed cam 44 and partition are controlled cam 45 on this camshaft 41, and on the cam part 45a that cuts off control cam 45, butt is installed in and cuts off the roller 25 of controlling wrist 24 leading sections.In the slot part 44a of the slot part 43a of left and right sides feed cam 43, front and back feed cam 44; Engage other not shown pins respectively; Make the action along the shape of slot part 43a, 44a of this pin; Transmit via linkage (not shown), the hoisting mechanism of stating after making (with reference to figure 2) along continuous straight runs moves, and regulates the needle downing position with respect to the button 121 of the lift arm that is raised mechanism 50 clampings.

On eccentric cam 14, link an end of toggle-action lever 60, the other end of this toggle-action lever 60 and pin activation lever 61 can link with rotating freely, and this pin activation lever 61 can be fixed on the not shown sewing machine stand with rotating freely.In addition, on the needle bar 62 of an end that is arranged on pin activation lever 61, pin 63 is set.

At an end of camshaft 41 the knotting cam 70 of knotting mechanism is installed, cam surface 70a is outstanding on this knotting cam 70.And, being installed on the knotting wrist 71 on the sewing machine stand (not shown), apply revolving force, so that should tie a knot an end of wrist 71 and the cam surface 70a butt of knotting cam 70 through spring 72 with rotating freely.At another distolateral formation slotted hole 71a of knotting wrist 71, the roller 73a that is formed at an end of connecting rod 73 embeds among the slotted hole 71a.

And as shown in Figure 2, the other end of connecting rod 73 links with the base end part of knotting plate 75 via lever 76, connecting rod 77.But knotting plate 75 is by not shown needle plate free rotary ground supporting.On the leading section of knotting plate 75, form thread holding department 78.

In addition, as shown in Figure 1, on the fork that can be fixed on the wishbone 81 of axle on 80, embed tangential cam 16 with rotating freely, this 80 is fixed on the not shown sewing machine stand.In addition, on this wishbone 81, form hook portion 81a.

The upper end of bar 82 is fixed on the above-mentioned partition axle 23, on the lower end of bar 82, can link an end of connecting rod 83 with rotating freely.Can rotate freely on the other end of this connecting rod 83 the fixing lower end of riser 84, on this riser 84, form hook portion 84a.

And; As shown in Figure 2; Can be supported on the set square 85 on the sewing machine stand (not shown) by screw-shaped rotary shaft 85c with rotating freely; Form cam part 85a, slot part 85b, in above-mentioned cam part 85a, embed axis body 86, this axis body 86 supports the upper end of riser 84 and an end of lifting arm 151 (with reference to figure 4) coaxially.

Here, in the Sewing machines of this embodiment, be that suture after on the cloth 120 is handled as button 121 being made at sewn object; Suture is cut off under the situation of processing at the tangent mechanism of stating after the use; As shown in Figure 3, the bolt 96 that the screwed hole 86a on the above-mentioned axis body 86 screws togather is used and be formed in the upper end of the connecting rod 90 of formation tangent mechanism; Link with above-mentioned axis body 86; Act on the drag force on the suture and break under the situation of processing in utilization, as shown in Figure 4, constitute the upper end of the connecting rod 90 of tangent mechanism; Use and be formed on the bolt 96 that the screwed hole 85d on the rotary shaft 85c screws togather and link, this rotating shaft 85c support triangle plate 85 rotatably on sewing machine stand.

That is,, form as the axis hole 90a that cuts off linking part with as the axis hole 90b that breaks linking part in the upper end of above-mentioned connecting rod 90.In addition; Lower end at connecting rod 90; One end that can link the connecting rod 91 of L word shape can link an end of connecting rod 92 with rotating freely with rotating freely on the other end of connecting rod 91, the fixed part that the pars intermedia of above-mentioned connecting rod 91 is fixed on the sewing machine stand (not shown) can support with rotating freely.Be to link movable cutting knife 93 on the leading section of tangent mechanism in the other end of above-mentioned connecting rod 92; This movable cutting knife 93 can be supported on the below of needle plate with rotating freely; Through when movable cutting knife 93 rotates, meshing the fixed cutting tool 94 that cuts off suture, be fixed on the back side of not shown needle plate with movable cutting knife.

In addition; As noted above; Under the situation that the cut-out that the line cutting structure of stating after the use cuts off suture is handled; For movable cutting knife 93 can be moved, riser 84 and connecting rod 90 are linked via above-mentioned axis body 86, this riser 84 moves through the drive source drives power of transmitting when button 121 sewing finishing.In other words; Cut off the axis hole 90a of linking part via conduct through above-mentioned connecting rod 90; On the axis body 86 that is bolted among the cam part 85a that embeds set square 85; Thereby be attached at simultaneously on the riser 84 with an end of lifting arm 151, this riser 84 moves through the drive source drives power of transmitting when button 121 sewing finishing.

On the other hand; Act on the drag force on the suture and break under the situation of processing in utilization; For cut off and movable cutting knife 93 between binding and it can't be moved, with sewing machine stand and connecting rod 90 via the rotary shaft 85c binding that is configured on the above-mentioned set square 85.In other words,, on the rotary shaft 85c that is bolted to support triangle plate 85 rotatably, thereby link via as breaking the axis hole 90b of linking part through above-mentioned connecting rod 90 via set square 85 and sewing machine stand.

And, among the slot part 85b on being formed at above-mentioned set square 85, can be free to slide ground chimeric and link the bend 100c on the end that is formed on connecting rod 100.Connecting rod 100 can be supported by sewing machine stand along its length with being free to slide; Among the groove 100a that forms on the accessory 100A on a part that is arranged on connecting rod 100; Embedding is by the cam part 101a of the fixing suture adjusting rod 101 of rotary shaft 101A, and this rotary shaft 101A is rotatably supported by not shown sewing machine stand axle.

In addition; Lodge spring 103 between the spring hook portion of the regulation of spring hook 100b of portion and clamp 102; This spring hook 100b of portion is formed on another accessory 100B that is arranged on the connecting rod 100, and this clamp 102 is fixed through the rotary shaft 102A that is rotatably supported by not shown sewing machine stand axle.

As shown in Figure 5, on sewing machine stand, can rotate freely ground stationary clamp slide block 104, with the press section 102b butt of clamp 102.In addition, on suture adjusting rod 101, adjustable ground is installed backguy wrist 105 (backguy unit).The base end part 105a of this backguy wrist 105 is installed in through bolt 97 on the rotary shaft 101A of suture adjusting lever 101, and leading section 105b (suture fastener) forms ring-type.Suture engaging parts 130 have hole 130a, the 130a that inserts suture on the jut of two ends, be arranged on simultaneously on the suture route of sewing machine stand.Like this, the suture fastener 105b through backguy wrist 105 changes the suture route along the swing of P direction between the two ends jut of suture engaging parts 130, thus the suture between pulling pin 62 and the clamp 102.

Return Fig. 1 in addition, near the rotary type looper 32 of looper axle 31, fixedly periphery cam 110 and grooved cam 111.On the guided plate 112 that is fixed on the not shown sewing machine stand, hub leg 113 can be installed with being free to slide, fork embeds in the periphery cam 110.And hub 114 can be installed on the hub leg 113 with being free to slide.End at hub 114 forms slotted hole, in this slotted hole, embeds roller 116, and this roller 116 is installed in an end that can be supported on the front and back wrist 115 on the not shown sewing machine stand with rotating freely.This roller 116 is also in the cam part of embedded groove cam 111.Thus, hub 114 can carry out the plane motion by periphery cam 110 and grooved cam 111 decisions.

Needle plate was put the cloth 120 as sewn object in 51 years.Below above-mentioned lifting arm 151, have hoisting mechanism, it can pass through the driving of left and right sides feed cam 43, front and back feed cam 44 and move in the horizontal direction.Hoisting mechanism has lifting piece 52, and it, promotes button 121 is remained on the front between 2 forked lift arms 50 as pivot point with base portion.On the upper surface of lifting piece 52, form the clamping rpole 53 of the J word shape of the front end side of being directed downwards opening.Interior perimembranous at this clamping rpole 53; In connect and make the clamping rpole 152 of leading section with the bending of J word shape roughly, this clamping rpole 152 hangs down from the leading section lower surface of above-mentioned lifting arm 151, the rotation of the set square 85 of the decline through being accompanied by riser 84; Lifting arm 151 is the center with the fulcrum 151a that is supported by not shown sewing machine stand; So that the mode that leading section lifts to the top rotates, thus, also upwards be raised up to the position of regulation with the clamping rpole 152 that connects in the above-mentioned clamping rpole 53.Thus, lifting piece 52 is also so that be configured in the mode that the leading section on the lift arm 50 lifts to the top and rotate, and the cloth 120 that can make the button 121 that remains on the lift arm 50 and make button 121 lifts from needle plate 51.

In addition, hoisting mechanism is made up of lift arm 50, lifting piece 52, clamping rpole 53, lifting arm 151, clamping rpole 152.

Below, illustration.

At first,, then cut off framework 20 and rotate, remove the engaging that cuts off between hook 22 and the cam part 13a, utilize not shown separating mechanism simultaneously, link drive pulley 11 and driving shaft 12, begin rotation along the F direction along the E direction if step on not shown startup lever.

Thus, camshaft 41 is also along the rotation of G direction, and the roller 25 of partition control wrist 24 leaves from the cam part 45a that cuts off control cam 45, even pin leaves above-mentioned startup lever, cut off hook 22 and also can't rotate along anti-E direction, thereby driving shaft 12 continues rotation.

Through the rotation of eccentric cam 14, pin activation lever 61 is via toggle-action lever 60 swings, and needle bar 62 moves back and forth along the vertical direction.Thus, the looper 32 through being installed in looper axle 31 front ends is along the rotation of K direction, and the co-operating of the action of hub 114, forms monocycle and makes.

That is, if carry out above-mentioned action, the then action through the lift arm 50 that undertaken by the rotation of left and right sides feed cam 43, front and back feed cam 44, pin 63 falls into the button hole of the button 121 on the cloth 120 with the order of regulation, forms monocycle and makes.

If roller 25 arrives the cam part 45a that cuts off control cam 45, then cut off framework 20 along anti-E direction rotation, cut off hook 22 and cut off cam 13 butts.At this moment, through not shown separating mechanism, the contact of drive pulley 11 and driving shaft 12 is removed, and driving shaft 12 utilizes the inertia force rotation then, behind the cam part 13a butt that cuts off hook 22 and partition cam 13, stops.

In addition, through cutting off framework 20 along anti-E direction rotation, via cutting off axle 23, bar 82, connecting rod 83, the hook portion 84a of riser 84 engages with the hook portion 81a of fork 81, and the inertia force of driving shaft 12 transmits via tangential cam 16, and riser 84 is moved along the H direction.Thus, set square 85 rotates along the L direction, and connecting rod 100 is moved along the M direction, and suture adjusting rod 101 is that rotate along the N direction at the center with rotary shaft 101A, derives the suture between itself and the suture guiding portion 106.In addition, clamp 102 is also via spring 103, is that rotate along the S direction at the center with rotary shaft 102A, pushes the suture between itself and the clamp slide block 104.In addition, through the rotation of backguy wrist 105, thereby pull the suture between suture engaging parts 130a, the 130a along the P direction.

In addition, movable cutting knife 93 rotates along the Q direction via connecting rod 90,91 and 92, carries out tangent line with fixed cutting tool 94 engagements.If before this thread cutting action; One end of knotting wrist 71 engage with the protuberance 70a of knotting cam 70, and the plate 75 of then tiing a knot rotates along the R direction via connecting rod 73, lever 76, connecting rod 77, if maintenance stipulate during after; End engages with protuberance 70a's, then returns original position.In addition, knotting cam 70 is fixed on the camshaft 41 along direction of rotation adjustably.

Here; In the final stage that the button that monocycle is made is made, the pin that falls (last pin) when accomplishing from making is the formation state of the stitching that begins of 2 pins and co-operating relation, the position relation of pin 63, rotary type looper 32, hub 114 and thread holding department 78 before by stage explanation.Fig. 6 to Figure 15 representes the figure that this descends the formation of toe-in in proper order by the stage, (A) is profile, (B) is oblique view.

Fig. 6 is illustrated in before 2 pins of last pin, and pin 63 is positioned at the state of making of peak.Label 122a catches the 1st wire loop behind the sutures 122 through fall pin and looper 32 before 2 pins of a pin in the end.Then; In needle downing position (another button hole) when lasting before pin is positioned at 1 pin of last pin, 1 suture that forms the 1st wire loop 122a is by thread holding department 78 (suture holding unit) seizure (Fig. 7), and then; Carry out the 1 pin pin that falls before of last pin; Looper 32 begins to catch this suture 122, hub 114 begin to make from the bottom of thread holding department 78 the 1st wire loop 122a to a side near, thread holding department 78 keeps the 1st wire loop (Fig. 8) at assigned position.Under this state, suture is crooked, and the suture length that forms the 1st wire loop 122a is longer than former wire loop.Pin 63 rises then, and hub 114 leaves the 1st wire loop 122a, and looper 32 is caught suture 122 and passed the 1st wire loop 122a, forms the 2nd wire loop 122b, and the 1st wire loop leaves looper 32, pin 63 risings (Fig. 9).

Then, last pin begin with 1 pin before identical button hole, the pin button hole that falls in fall, hub 114 make the 2nd wire loop 122b to a side near, looper 32 begins to catch suture 122 (Figure 10).Then, looper 32 begins to make suture 122 to pass the 2nd wire loop 122b, and hub 114 leaves the 2nd wire loop 122b (Figure 11).Then, thread holding department 78 before cloth 120 pulls, is decontroled wire loop 122b at the 2nd wire loop 122b.Thus, form the 3rd wire loop 122c (Figure 12) that passes the 2nd wire loop 122b.

And then pin 63 rises, the 3rd wire loop 122c left behind (Figure 13).As noted above; Thread holding department 78 keeps suture with the state of 1 suture of catching the 1st wire loop 122a at assigned position; And make suture crooked; Because the suture length of the 2nd wire loop 122b part is longer than former wire loop, passes the 2nd wire loop 122b (Figure 14) so the end 122a1 of the 1st wire loop 122a also is pulled with the 3rd wire loop 122c together.The 3rd wire loop 122c if leave behind like this makes the 3rd wire loop 122c movably cut 93, fixedly cut 94 cut-outs, and the toe-in part 122b1 that then can form through end 122a1 and the 2nd wire loop 122b of the 1st wire loop 122a form fastened toe-in (Figure 15).

Therefore, pulled, also can suture end 122d not extracted from the 1st wire loop 122a, can be formed the toe-in that can easily not unclamp even the end of suture and skin etc. rub etc.

In addition, in the Sewing machines of this embodiment, because of the action of thread holding department 78 can make the slack of suture form biglyyer.But, owing to pull suture more through on suture adjustable plate 101, backguy wrist 105 being installed, thus even suture is ended by clamp 102 cards, also can pull the suture between pin 63 and the clamp 102, can produce enough pullings, so the toe-in of can tying tight.

Explain in this specification that " last pin " represent that which time be the pin that falls here.

In the prior art, the final stage forming stitching forms toe-in through the 1st and the 2nd wire loop that is formed by continuous 2 pins that fall.Then, the formed wire loop of the pin that falls after continuous 2 pins that fall that form the 1st and the 2nd wire loop behind the thread cutting device tangent line by regulation, is accomplished toe-in at last.

" last pin " of this specification indication is meant; The pin that falls after continuous 2 pins that fall that form the above-mentioned the 1st and the 2nd wire loop is (in existing toe-in; Relevant with the formation of the wire loop that carries out the regulation tangent line, in this embodiment, also the formation with the 3rd wire loop that carries out the regulation tangent line is relevant).Therefore, for example behind the pin that falls after forming continuous 2 pins that fall of the above-mentioned the 1st and the 2nd wire loop, and then carry out under the situation of 1 pin that falls, so-called " last pin " is meant, the pin that falls after continuous 2 pins that fall of formation the 1st and the 2nd wire loop.

In addition, presupposing under the situation of making that suture can untie, for example, when nail catcher, under the situation of temporarily making the preparation button on the label, is not to form the above-mentioned toe-in that is difficult to untie, and as long as form common toe-in.

Promptly; Common toe-in is Figure 16 or shown in Figure 17 for example; The final stage of making at button; The 2nd wire loop 122b that forms when will be in the end forming stitching before 1 pin of a pin (last stitching) penetrates among the 1st wire loop 122a that forms when forming stitching before 2 pins of a pin in the end, and then through the pin that falls by last pin the 2nd wire loop 122b is passed in the suture end and form.Above-mentioned suture end can be breaking at the 3rd wire loop (not shown) that forms when last pin falls pin through the tangent mechanism by regulation and form.

Thus; After suture 122 forms toe-in; Use above-mentioned movable cutting knife 93 to cut off under the situation of processing of above-mentioned suture 122, because connecting rod 90 via axis hole 90a, links with the riser that moves through the transmission of driving force 84; So movable cutting knife 93 rotates via connecting rod 90,91 and 92, clamping and cut off it and fixed cutting tool 94 between apply the suture 122 of tension force by above-mentioned clamp 102.And, as noted above under the situation of cutting off suture 122 by this method, on suture, form the end of a thread (with reference to Figure 15) at least more than or equal to the physical thickness size of needle plate and fixed cutting tool 94.In addition, in Figure 16, represent the sketch map of the situation that the cut-out of using movable cutting knife 93 to cut off suture 122 is handled with respect to above-mentioned common toe-in.

On the other hand; Act on the drag force on the suture 122 and under the situation of breaking processing broken in utilization; Link with the rotary shaft 85c that is fixed on the sewing machine stand because connecting rod 90 utilizes axis hole 90b, institute makes button 121 after making by lifting piece 52 liftings of above-mentioned hoisting mechanism so that the action of above-mentioned movable cutting knife 93 stops; Make on the toe-in of the suture that applies tension force by clamp 102 part and concentrate working tension, utilize its external force and break the toe-in part.And, shown in figure 18 under the situation of breaking suture 122 by this method, on suture 122, can not form big the end of a thread.In addition, in Figure 17, represent to utilize the sketch map that acts on the drag force on the suture 122 and break the situation of processing.

Thus, according to the Sewing machines of this embodiment, can utilize single Sewing machines, the suture processing that forms the end of a thread is handled the two with the suture that does not form the end of a thread.In addition, the toe-in of the suture that under the situation of carrying out the tangent line processing, forms is also through the drive controlling of knotting mechanism, and is corresponding with its demand, can form common toe-in and the toe-in that is difficult to untie.

In addition, the present invention is not limited to above-mentioned embodiment, can carry out various changes as required.

Claims (4)

1. single-ring sewing machine for sewing button, it utilizes monocycle to make button is made on sewn object through 1 suture needle moving up and down and the co-operating of rotary type looper,

It is characterized in that having:

Tangent mechanism, it can cut off processing and break processing, and this cut-out is treated to; After suture forms toe-in when the button sewing finishing; Through making movable cutting knife action cut off suture, this is broken and is treated to, after suture forms toe-in when the sewing finishing of button; Apply tension force to suture, utilize this tension force and break the toe-in part; And

Processing is handled and broken to connect mechanism, its associated configuration thereby can switch above-mentioned cut-out on tangent mechanism.

2. single-ring sewing machine for sewing button according to claim 1 is characterized in that,

Have the line maintaining body, it can catch, decontrol 1 suture of wire loop, when catching, wire loop is remained on assigned position,

Above-mentioned line maintaining body is caught 2 pins the 1st wire loop to the sewn object pulling before of a pin in the end, and when in the end a pin fell pin, the 2nd wire loop after above-mentioned the 1st wire loop was decontroled before sewn object pulls.

3. single-ring sewing machine for sewing button, it utilizes monocycle to make button is made on sewn object through 1 suture needle moving up and down and the co-operating of rotary type looper,

It is characterized in that having:

Tangent mechanism; It is the configuring fixed cutting knife below needle plate; Dispose movable cutting knife at leading section; On base portion, form and cut off linking part and break linking part, this cut-out linking part is used for linking with the action component that when the sewing finishing of above-mentioned button, moves through transmission drive source drives power, and this is broken linking part and is used for linking with the fixed part that is fixed on the sewing machine stand;

Clamp, it can keep suture on the supply route of reaching the standard grade; And

Hoisting mechanism, it can keep button on leading section, through being that center of rotation is rotated with the base portion, can promote the front that keeps above-mentioned button,

When cut off handling, make the binding of above-mentioned cut-out linking part and above-mentioned action component, make the action interlock of above-mentioned movable cutting knife and above-mentioned action component, clamping applies the suture of tension force by above-mentioned clamp between itself and said fixing cutting knife, cut off,

Breaking when handling, the above-mentioned linking part of breaking is linked with the said fixing parts, the action of above-mentioned movable cutting knife is stopped, the button after the while is made by above-mentioned lift mechanism lifts utilizes the tension force that above-mentioned clamp applies and breaks suture.

4. single-ring sewing machine for sewing button according to claim 3 is characterized in that,

Have the line maintaining body, it can catch, decontrol 1 suture of wire loop, when catching, wire loop is remained on assigned position,

Above-mentioned line maintaining body is caught 2 pins the 1st wire loop to the sewn object pulling before of a pin in the end, and when in the end a pin fell pin, the 2nd wire loop after above-mentioned the 1st wire loop was decontroled before sewn object pulls.

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