CN103710905B - Buttonholing machine - Google Patents

Abstract

The present invention provides a kind of buttonholing machine, and it efficiently carries out multiple Buttonhole sewings.Have：Feed mechanism, it makes mounting portion be moved along fixed-direction, carries out the feeding of sewn object；Suture needle reciprocating mechanism, it moves up and down suture needle；Pin swing mechanism, it makes suture needle be moved along the direction orthogonal with direction of feed；First presser feet part, it keeps sewn object in mounting portion；Second presser feet part, it keeps sewn object in the outside of mounting portion；Presser feet lifting mechanism, it switches hold mode and its releasing state of first and second presser feet part relative to sewn object；Control unit, it utilizes the hold mode and the shift action of the releasing state of the shift action of the mounting portion under the releasing state of the second presser feet part and the first presser feet part and the mounting portion under the hold mode of the second presser feet part of the first presser feet part, holding position of the sewn object relative to mounting portion is changed, so as to carry out Buttonhole sewing at multiple positions of sewn object.

Description

Buttonholing machine

Technical field

The present invention relates to a kind of buttonholing machine.

Background technology

Existing buttonholing machine mainly has：Cloth feeding mechanism, it enters main cloth cloth as defined in Conveyed to direction；Presser feet lifting mechanism, it keeps above the feeding plate of cloth feeding mechanism to main cloth；Above and below suture needle Travel mechanism, it applies to suture needle moves up and down；Pin swing mechanism, it makes suture needle be moved along the direction orthogonal with cloth direction of feed It is dynamic, enter hand-manipulating of needle swing；And cloth cutter, it is used to form button hole（For example, referring to patent document 1）.

Cloth feeding mechanism has the feeding plate for being used for loading main cloth and entering as the mobile driving source for feeding plate To motor, feed motor carries out action control by the control unit of sewing machine.

In suture needle reciprocating mechanism, in addition to applying the sewing machine electromotor moved up and down to suture needle, also have Apply the pin wobbling motor of pin wobbling action to suture needle, pin wobbling motor also carries out action control by control unit.

Presser feet lifting mechanism has：Cloth pressing, it is liftably supported on feeding plate；Presser feet spring, it is to cloth Presser feet applies foot pressure；And presser feet lifts motor, it is resisted presser feet spring and lifts cloth pressing.In addition, cloth Presser feet is so that with being supported in a manner of being moved together with feeding plate along cloth direction of feed, presser feet spring and presser feet lift motor The shift action of cloth pressing can be allowed and apply foot pressure, lifting action.

Sewing machine has operating pedal, and by the operation of the operating pedal, presser feet lifting mechanism can switch to lower rheme Put, i.e. by cloth pressing to feeding plate face contact down position, from feeding plate left gently towards top centre position, And the most lifting position risen to greatest extent.

In above-mentioned existing buttonholing machine, in the state of cloth pressing is in most lifting position, Main cloth is set on feeding plate, after cloth pressing is dropped to centre position by operating pedal, by the sewing position of main cloth Put and position exactly.Then, cloth pressing is dropped to down position and carry out cloth holding, if carried out by operating pedal The operation started is sewed, then cloth travel mechanism, presser feet lifting mechanism, cloth cutter are controlled, forms Buttonhole Stitching, then, automatically cloth pressing is set to rise to centre position.

In addition, if the operation as noted above for by operating pedal sew beginning, sewing machine form button hole Lock seaming stitching, then, the action untill automatically making cloth pressing rise to centre position is referred to as the automatic of sewing machine Action, be set to the auto-action time of sewing machine its time.

Patent document 1：No. 4084025 publications of Japanese Patent No.

In factory is sewed, an operating personnel are responsible for more sewing machines.Also, carry out automatic sewing in 1 sewing machine During, the setting operation of sewing cloth is carried out to other sewing machines, so as to realize the raising of production efficiency.

Because above-mentioned existing buttonholing machine automatically enters untill a Buttonhole sewing is formed Action is made, so logically, if using during this period, the alignment of main cloth is carried out on another buttonholing machine Start with sewing, then 2 buttonholing machines can be made to continuously run incessantly.

But in fact, the time needed for the sewing of Buttonhole is more than 2 seconds or so, on the other hand, main cloth Alignment operation be also required to for skilled operator 3 seconds or so, therefore, if taking into account operation by an operating personnel Using 2 buttonholing machines, then the halted state of sewing machine is produced every time, can not realize carrying for sufficient production efficiency It is high.

The content of the invention

It is an object of the invention to provide a kind of buttonholing machine, and it will not reduce the sewing of each Buttonhole Operating speed, can fully ensure auto-action time of sewing machine.

The invention that technical scheme 1 is recorded is a kind of buttonholing machine, and it has：Feed mechanism, it, which has, is used for The mounting portion of sewn object is loaded, by making the mounting portion be moved along fixed direction of feed, so as to carry out the sewn object Feeding；Suture needle reciprocating mechanism, it moves up and down suture needle；Pin swing mechanism, it makes the suture needle edge and the feeding The orthogonal direction movement in direction；And the first presser feet part, it is protected in the top of the mounting portion to the sewn object Hold, the buttonholing machine passes through the feed mechanism, the suture needle reciprocating mechanism and the pin swing mechanism Co-operating, so as to carry out Buttonhole sewing to the sewn object being placed in the mounting portion, it is characterised in that Have：Second presser feet part, it keeps in the outside of the mounting portion to the sewn object；Presser feet lifting mechanism, its Switch hold mode and releasing state of the first presser feet part to the sewn object, and switching second pressing part Hold mode and releasing state of the part to the sewn object；And control unit, it passes through the holding of the first presser feet part State and the shift action of the mounting portion under the releasing state of the second presser feet part and the first presser feet part Releasing state and the mounting portion under the hold mode of the second presser feet part shift action, be sewn described in change Thus thing, carries out Buttonhole seam relative to the holding position of the mounting portion on multiple positions of the sewn object System.

The invention that technical scheme 2 is recorded is characterised by thering is the invention identical structure recorded with technical scheme 1, and And the presser feet lifting mechanism has 1 actuator and presses the actuator, the first presser feet part and described second Foot part link linkage, the linkage by being controlled by the control unit to the actuator, so as to Enough switch to following state, i.e. the first presser feet part turns into hold mode and the second presser feet part turns into releasing shape The first state of state and the first presser feet part turn into releasing state and the second presser feet part turns into hold mode Second state.

The invention that technical scheme 3 is recorded is characterised by thering is the invention identical structure recorded with technical scheme 1, and And the presser feet lifting mechanism has the cause switched over to the hold mode and releasing state of the first presser feet part respectively Dynamic device and to the hold mode of the second presser feet part and release the actuator that state switches over.

The invention that technical scheme 4 is recorded is characterised by having and the invention described in any one of technical scheme 1 to 3 Identical structure, also, the presser feet lifting mechanism is by the control unit to the actuator by being controlled, so as to The height of the first presser feet part is switched to and keeps the holding position of the sewn object, as compared with the holding position The off-position of the sewn object of higher position and as the interposition between the holding position and the off-position Put, when the second presser feet part is in hold mode, the first presser feet part turns into the centre position.

The effect of invention

In the invention that technical scheme 1 is recorded, moved by the movement of the mounting portion under the hold mode of the second presser feet part Make, only move mounting portion relative to sewn object, therefore, sewn object and mounting portion relatively make in cloth direction of feed Position relationship changes.Therefore, by the sewing position that is sewed since current Buttonhole with to next sewing mesh The amount of movement identical amount of movement of cursor position, only moves mounting portion, so as to make relative to mounting portion under sewn object One sewing target location alignment.

Also, the shift action of the mounting portion under the hold mode for passing through the first presser feet part, can utilize suture needle make by Next sewing target location of sewing object is moved to sewing position, therefore, under the hold mode by the first presser feet part Shift action under the hold mode of shift action and the second presser feet part, the Buttonhole of sewn object can be sewed Sewing target location switches over.In addition, by being repeated a number of times above-mentioned action, so as in more than or equal to 3 portions Buttonhole sewing is carried out at position.

In addition, the shift action under the hold mode of the first presser feet part and the shifting under the hold mode of the second presser feet part Dynamic action, which is first carried out can be with.

It is as noted above, in the prior art, it can only be directed to 1 Buttonhole sewing and carry out the automatic dynamic of sewing machine Make, but sewing machine involved in the present invention can be directed to the sewing of multiple Buttonholes and persistently carry out continuous and automatically action.

As a result, during 1 sewing machine carries out multiple Buttonhole sewings automatically, carry out to other sewing machines The setting operation of sewing cloth, it can further realize the raising of production efficiency.

Also, due to increasing from the time for starting to sew untill next operation is needed, so during this period, operation Personnel can carry out the operation to other sewing machines, so as to be operated to more sewing machines.

That is, will not reduce the operating speed of each Buttonhole sewing, it is possible to more sewing machines are operated, Can be greatly enhanced the efficiency of sewing operations.

Connect additionally, there are the first presser feet part can be made along the extension of cloth direction of feed, and using 1 the first presser feet part The sewing machine of the Buttonhole sewing at 2 to 3 positions is carried out continuously, but in the case of compared with this sewing machine, this hair Bright sewing machine will not be limited the size of mounting portion, can continuously carry out more Buttonhole sewings, can be with Realize more efficient sewing.Furthermore it is possible to ensure the longer automatic sewing time, multiple sewing machines are grasped in operating personnel It is more favourable in the case of work.In addition, in the case where making the first presser feet part extend along cloth direction of feed, it is possible to create first The maximization of presser feet part, with the ensuring of motion space, the weight of part increase the maximization of associated driving source, action it is low Speedization etc., but the present invention can avoid above-mentioned rough sledding.

In addition, the first presser feet part extended along above-mentioned cloth direction of feed can certainly be mounted in the seam of the present invention Thread on machine.In the case, after the Buttonhole sewing at 2 to 3 positions is carried out, the holding shape of the first presser feet part is passed through Shift action under state and the shift action under the hold mode of the second presser feet part, the Buttonhole of sewn object is sewed Sewing target location switch over, it is possible thereby to continuously more target locations carry out Buttonhole sewing.

In the invention that technical scheme 2 is recorded, using the linkage using the gonnecting rod body such as lever part or bell crank, The transmission of the lifting action for first and second presser feet part is carried out, by being exported from 1 actuator to the dynamic of fixed-direction Power, it is possible thereby to apply the action of opposite direction each other to each presser feet part.

Thus, it is possible to reduce the number of actuator, reduction, the simplification of control system of component costs are realized.

In the invention that technical scheme 3 is recorded, make the first presser feet part and the second presser feet part using independent actuator Action, it is thereby achieved that act the simple simplification of the mechanism construction of transmission.

In the invention that technical scheme 4 is recorded, the first presser feet part is set to increase relative to holding position with 2 stages, When second presser feet part is kept, the first presser feet part releases the hold mode to sewn object in middle position, therefore, The time needed for vertical motion can be shortened, the high speed of realization action.

In addition, in the case of changing sewn object after sewing finishing, due to the first presser feet part can be made to turn into higher Off-position, it is possible to obtain good workability.

Brief description of the drawings

Fig. 1 is the oblique view of the buttonholing machine of the embodiment as invention.

Fig. 2 is the skeleton diagram of the internal structure of buttonholing machine.

Fig. 3 is the oblique view after only being extracted to the structure of the presser feet lifting mechanism in buttonholing machine.

Fig. 4 is the amplification oblique drawing on the periphery of cloth pressing.

Fig. 5 is the amplification oblique drawing on the periphery of the cloth pressing from the direction different from Fig. 4.

Fig. 6 is the figure of the presser feet lifting mechanism from facing side.

Fig. 7 is the action specification figure of auxiliary presser foot rod, Fig. 7（A）Represent the state of the front position of transmission lever, Fig. 7（B）Table Show the state of the midway stop position of transmission lever, Fig. 7（C）Represent the state of the most going-back position of transmission lever.

Fig. 8 is the action specification figure of cloth pressing and auxiliary presser foot rod, Fig. 8（A）Represent the front position of transmission lever State, Fig. 8（B）Represent the state of the midway stop position of transmission lever, Fig. 8（C）Represent the state of the most going-back position of transmission lever.

Fig. 9 is the block diagram for the control system for representing buttonholing machine.

Figure 10 is the explanation figure of the setup parameter for the tailoring pattern for representing Buttonhole sewing.

Figure 11 is the flow chart for the control for being formed continuously action for representing Buttonhole sewing.

Figure 12 is the action specification figure for being formed continuously action of Buttonhole sewing, with Figure 12（A）~Figure 12（E）It is suitable Sequence is acted.

Figure 13 is the action oblique view for being formed continuously action for representing Buttonhole sewing, with Figure 13（A）~Figure 13（D） Order acted.

Figure 14 is the oblique view for the cloth pressing for representing corresponding 2 holes.

Figure 15 is the oblique view for the cloth pressing for representing corresponding 3 holes.

Figure 16 is represented relative to the action specification figure that preferably sewing acts of the main cloth before the right side.

Figure 17 is the action specification figure after Figure 16.

Figure 18 is the action specification figure after Figure 17.

Figure 19 is the action specification figure after Figure 18.

Figure 20 is the action specification figure after Figure 19.

Figure 21 is the oblique view for representing the example by auxiliary presser foot configuration on the left of feeding plate.

Figure 22 is the oblique view for representing to carry the other examples of the presser feet lifting mechanism of 2 presser foot motors.

Figure 23 is the oblique view for the other examples for representing auxiliary presser foot.

The explanation of symbol

1 suture needle

20 suture needle reciprocating mechanisms（Travel mechanism）

21 needle bars

22 sewing machine electromotors

Axle on 23

27 pin wobbling motors

270 pin swing mechanisms

40th, 40C presser feets lifting mechanism

41 cloth pressings（First presser feet part）

49th, 494C, 495C presser foot motor

50 transmission levers

51 auxiliary presser foots（Second presser feet part）

52 bell cranks

53 linkage components

58 lever parts

59 linkage components

60 cutter mechanisms

61 cloth cutters

70 cloth feeding mechanisms

71 feeding plates（Mounting portion）

74 feed motors

90 control units

100 buttonholing machines

101 sewing machine stands

C, the main clothes of D（Sewn object）

Embodiment

［ outline of buttonholing machine ］

Below, referring to the drawings, buttonholing machine 100 involved in the present invention is illustrated.Fig. 1 is button hole The oblique view of serging machine 100, Fig. 2 are the skeleton diagrams of its internal structure.In addition, in the following description, by horizontal direction And the cloth direction of feed of buttonholing machine 100 is referred to as Y direction, by horizontal direction and the side orthogonal with Y direction To referred to as X-direction, vertical above-below direction is referred to as Z-direction.In addition, as needed, as shown in figure 1, by Y direction Side is used as " preceding ", using opposite side as " rear ", using the side in X-direction as " right side ", using opposite side as " left side ".

Buttonholing machine 100 has：As the cloth feeding mechanism 70 of feed mechanism, it, which has, is used to load quilt The feeding plate 71 as mounting portion of sewing object, by making the feeding plate 71 along fixed direction of feed（Hereinafter referred to as " cloth enters To direction "）It is mobile, so as to carry out the feeding of sewn object；Suture needle reciprocating mechanism 20, it moves up and down suture needle 1；Pin is put Motivation structure 270, it makes suture needle be moved along the direction orthogonal with above-mentioned direction of feed；Cloth pressing as the first presser feet part 41, it keeps sewn object on feeding plate 71；As the auxiliary presser foot 51 of the second presser feet part, it is in the outside of feeding plate 71 Keep sewn object；Presser feet lifting mechanism 40, it is directed to cloth pressing 41 and auxiliary presser foot 51, switches the holding shape of sewn object State and its releasing state；Cutter mechanism 60, it forms button hole on sewn object；Line adjusting means 11, it applies to reaching the standard grade Tension force；Container mechanism, it makes offline and winding of reaching the standard grade；Upper wire cutter（Omit diagram）, its cut-out reached the standard grade；It is offline to cut Disconnected device（Omit diagram）, it carries out offline cut-out；Control unit 90, it carries out above-mentioned each action control；And sewing machine stand 101, it carries out collecting holding to above-mentioned each structure.In addition, pass through cloth feeding mechanism 70（Feed mechanism）, suture needle moves up and down The co-operating of mechanism 20 and pin swing mechanism 270, so as to feed plate 71 to being placed in（Mounting portion）On sewn object it is enterprising Row Buttonhole sews.

Further, since the line adjusting means 11 of above-mentioned buttonholing machine 100, upper wire cutter and offline cutting Disconnected device, it is identical with existing known technology, so omitting detailed description.

In addition, above-mentioned buttonholing machine 100 is using the cloth of the clothes of formation button hole as sewing object Sewing machine, in the following description, illustrated in case of sewn object is main cloth C.

［ sewing machine stand ］

Sewing machine stand 101 is made up of following part：Base portion 102, it forms the bottom of buttonholing machine 100, And extend along Y direction；Longitudinal body portion 103, it is uprightly set from the rearward end of base portion 102；And arm 104, its Extend from the upper end in longitudinal body portion 103 along Y direction towards front.

Above-mentioned base portion 102 is shaped generally as rectangular shape, and the long side of the rectangular upper surface part is along Y-axis side To.Also, the upper surface of base portion 102 turns into operating area of the mounting as the main cloth C of sewn object in sewing.

Longitudinal body portion 103 the upper surface rear end portion side of base portion 102 keep left side configuration.Thus, base portion 102 is upper The substantially right side on surface can load main cloth C operating area as the total length across Y direction.

Arm 104 is extended near the leading section of base portion 102 from the upper end in longitudinal body portion 103 towards front.This Outside, in the following description, the front end end surface of arm 104 is referred to as face 105.

［ suture needle reciprocating mechanism ］

Suture needle reciprocating mechanism 20 has the function that action is moved up and down to keeping the needle bar 21 of suture needle 1 to apply, and passes through The pin swing mechanism 270 being arranged on the suture needle reciprocating mechanism 20, enter the hand-manipulating of needle along X-direction and swing.Moved down in the suture needle Motivation structure 20 has as shown in Figure 2：Needle bar 21, it keeps suture needle 1 in bottom；Sewing machine electromotor as servomotor 22, it turns into the driving source moved up and down of needle bar 21；Upper axle 23, the output shaft of itself and sewing machine electromotor 22 directly link； Counter weight 24, it is fixedly mounted on the leading section of axle 23；And toggle-action lever 25, its upper end and counter weight 24 relative to The eccentric eccentric position of pivot links.

Above-mentioned upper axle 23 is in the inside of arm 104 to be rotatably supported along the state of Y direction.Also, sewing machine Top of the output shaft of motor 22 to be arranged on longitudinal body portion 103 in a manner of concentric with upper axle 23.

Portion 31 is clasped via needle bar and is linked with needle bar 21 in the bottom of toggle-action lever 25.Therefore, it is if electronic by sewing machine The driving of machine 22, rotated counter weight 24 via upper axle 23, then the toggle-action lever linked with the eccentric position of the counter weight 24 25 upper end carries out circular motion, but in the bottom of the toggle-action lever 25, only transmits the past double action along the above-below direction of needle bar 21 Make.

［ pin swing mechanism ］

Pin swing mechanism 270 has：Oscillating table 26, it is supported to needle bar 21, and can make the needle bar 21 along its length Degree direction is moved back and forth；Pin wobbling motor 27（Reference picture 9）, its driving source swung as pin；Swinging axle 28, it is logical Cross pin wobbling motor 27 and carry out reciprocating rotation；And swing arm 29, it is fixedly mounted on the leading section of swinging axle 28, to swing Platform 26 applies wobbling action.

Oscillating table 26 is configured near the inner side of arm 104 and face 105, and its upper end passes through the rank along Y direction Ladder shell nail 30 swingably supports.The oscillating table 26 utilizes 2 metal bearings for inserting needle bar 21（Omit diagram）, so that seam The state of the side of pin 1 downward slidingly supports needle bar 21.

Swinging axle 28 can rotatably be supported in arm 104 along Y direction.The swinging axle 28 passes through from end side thereafter Pin wobbling motor 27 inputs rotational action.

In addition, swing arm 29 is so that it swings the state of end downward, in the leading section side of swinging axle 28 by axle branch Support, on the swing end, square block 32 is provided with the state that can be rotated around Y-axis.The square block 32 and oscillating table 26 Recess be fitted together to.The recess of oscillating table 26 has relative with two side sliding contacts in the X-direction of square block 32 Face, allow the displacement of the Z-direction of square block 32.Therefore, if swing arm 29 is entered with state downward along X-direction Row is swung, then the displacement of the above-below direction of square block 32 is allowed relative to oscillating table 26, while apply the swing of X-direction.

Thus, by the needle bar 21 with being realized using sewing machine electromotor 22 fall pin timing it is corresponding, make needle bar 21 with Ormal weight is swung, and carries out falling pin so as to any position in the X-axis direction.

［ container mechanism ］

Container mechanism has：Lower axle 33, it is in the base portion 102 to be rotatably supported along the state of Y direction；Vertically Kettle 34, it is rotated by lower axle 33 to apply；Drive sprocket 35, it is arranged on upper axle 23, to carry out moment of torsion biography to lower axle 33 Pass；Driven sprocket (not shown), it is arranged in lower axle 33；And toothed timing belt 36, it is hung on the He of drive sprocket 35 Between driven sprocket.

The number of teeth of drive sprocket 35 and driven sprocket is set, to transmit the rotation of two speeds from upper axle 23 to lower axle 33, Vertical kettle 34 is rotated with 2 speeds moved up and down of suture needle 1.

Vertical kettle 34 has：Outer kettle, it is fixedly mounted in lower axle 33, and with tip；And interior kettle, it is to bobbin Housing is kept, without rotation.So-called DP kettles, its any side for front and back are used as the vertical kettle 34 Cloth feeding, can maintain perfect stitching.

［ cutter mechanism ］

Cutter mechanism 60 has：Cloth cutter 61, it forms button hole using along the joint-cutting of Y direction；Base component 62, it keeps to the cloth cutter 61；Cutting knife support stick（Omit diagram）, it is carried out using bottom to base component 62 Keep, and liftably supported by arm 104；And the solenoid 63 as actuator（Reference picture 9）, it is via cutting knife Support stick applies lifting action to cloth cutter 61.

Cloth cutter 61 is arranged on the rear of suture needle 1, and base component 62 is supported in a manner of its blade tip is along Y direction On.

On base component 62, cloth cutter 61 is detachable, can be replaced by the different cloth cutter 61 of the facewidth and be formed The different button hole of size.

Cutting knife support stick by extension spring (not shown), when being cut off resist upward all the time by pretension, solenoid 63 Extension spring and decline cloth cutter 61.

［ cloth feeding mechanism ］

Cloth feeding mechanism（Feed mechanism）70 have：The feeding plate 71 of oblong-shaped, it is configured in the upper of base portion 102 Surface；Pedestal 73 is fed, it can be slidably supported in base portion 102 using 2 leading axles 72,72 along Y direction；Feeding Motor 74, it turns into the driving source that the cloth of Y direction is fed；And timing belt 76, its be erected at 2 belt wheels 75,75 it Between.

Above-mentioned leading axle 72,72 is fixedly supported in base portion 102 with the state parallel with Y direction.

Feed plate（Mounting portion）71 are arranged on the upper surface of base portion 102 in a manner of its long side is parallel with Y direction, Its leading section nearby and X-direction substantially central portion, be formed through the opening portion 711 along the slit-shaped of Y direction up and down. In sewing operations, by passing through suture needle 1 and the co-operating between vertical kettle 34 relative to the opening portion 711, so that Form stitching, also, make the cloth cutter 61 of cutter mechanism 60 by forming button hole on main cloth C.

Feeding pedestal 73 is slidingly supported via sliding bearing (not shown) using leading axle 72,72, at an upper portion thereof Keep feeding plate 71.

One in 2 belt wheels 75,75 is arranged on the output shaft of feed motor 74, and another is pivotally supported at On the inwall of base portion 102.In addition, above-mentioned belt wheel 75,75 can rotate around X-axis, and it is configured to, is hung on them each other Between timing belt 76 turn into along Y direction state.

In addition, a part for the timing belt 76 and the bottom of feeding pedestal 73 link, if feed motor 74 is revolved Turn driving, then feeding pedestal 73 and feeding plate 71 is moved along Y direction via timing belt 76.

Therefore, the main cloth C kept in the upper surface of feeding plate 71 by cloth pressing 41, can be by feed motor 74 action control and arbitrarily move positioning in the Y-axis direction.Also, as noted above, suture needle 1 can pass through suture needle Reciprocating mechanism 20 and optional position in the X-axis direction carries out falling pin, therefore, pass through the He of suture needle reciprocating mechanism 20 The co-operating of cloth feeding mechanism 70, carry out falling pin so as to the optional position in the X-Y plane on main cloth C.

［ presser feet lifting mechanism ］

Fig. 3 be it is main only the structure of presser feet lifting mechanism 40 is extracted after oblique view.The presser feet lifting mechanism 40 Have：Cloth pressing 41（First presser feet part）, it is pressed main cloth C in the upper surface of feeding plate 71；Auxiliary presser foot 51（Second presser feet part）, it is feeding the outside of plate 71, to the main cloth being placed on the upper surface in sewing machine base portion 102 C is pressed；Presser feet arm 43, it is supported via presser feet foot 42 to cloth pressing 41；Slider roller 44, it is by presser feet arm 43 press downwards；Cloth pressing rod 45, it is supported to the slider roller 44, and is liftably supported on arm 104 On；Presser feet spring 46, it applies foot pressure downwards to cloth pressing 41；Rod clasps portion 47, and it is to clasp the side of fastening Formula is fixed on cloth pressing rod 45；Presser feet guide portion 48, it is while the rotation that portion 47 is clasped to rod limits, to rising Drop action guides；As the presser foot motor 49 of actuator, it turns into the lifting of cloth pressing 41 and auxiliary presser foot 51 The driving source of action；Transmission lever 50, it, with the state approximately along Y direction, is entered in arm 104 by presser foot motor 49 Reciprocating action before and after row；Bell crank 52, the leading section of itself and transmission lever 50 link；Linkage component 53, it is by bell crank 52 Portion 47 is clasped with rod to link；Auxiliary presser foot rod 54, it is supported to auxiliary presser foot 51, and is liftably supported on arm On 104；Presser feet spring 55, it applies foot pressure downwards to auxiliary presser foot 51；Rod clasps portion 56, and it is to clasp fastening Mode is fixed on auxiliary presser foot rod 54；Presser feet guide portion 57, it is right while the rotation that portion 56 is clasped to rod limits Lifting action guides；Lever part 58, it links with transmission lever 50, and clasping portion 56 to rod applies lifting action；And even Rod unit 59, lever part 58 and rod are clasped portion 56 and linked by it.In addition, label 491 is for obtaining presser foot motor 49 The origin sensor of origin position.

Cloth pressing 41 is the flat board of substantially rectangular shape, is configured with the state of its long edge Y direction under suture needle 1 Side.In addition, the cloth pressing is formed through the opening portion 411 along the slit-shaped of Y direction about 41, turns into and enter with above-mentioned The configuration that opening portion 211 to plate 71 overlaps, can insert suture needle 1 and cloth cutter 61.

For presser feet foot 42,2 foots extended downwards support cloth presser respectively via plate-shaped springs (not shown) The Y direction both ends of pin 41, it is possible to achieve the small skew around Y-axis of cloth pressing 41 is moved.

Presser feet arm 43 extends along Y direction, and cloth pressing 41, its rear end are supported via presser feet foot 42 in its leading section side Portion side is supported by feeding plate 71, can be swung around X-axis.That is, presser feet arm 43 can lift cloth pressing 41 by its swing.

In addition, presser feet arm 43 is supported to presser feet foot 42, and allow the presser feet foot 42 around X-axis in minute angle Range tilt moves.

The upper surface as noted above for being supported on feeding plate 71 of presser feet arm 43, therefore, the presser feet arm 43 and cloth pressing 41 carry out the movement to Y direction together with feeding plate 71.

Also, the first half of presser feet arm 43 is formed as linear, latter half is bent to substantially crank-like.And And the upper surface of the first half in presser feet arm 43, fluted 431 are formed along its length.

Fig. 4 and Fig. 5 is the amplification oblique drawing on the periphery for the cloth pressing 41 observed from different directions respectively.As Fig. 3~ Shown in Fig. 5, slider roller 44 is formed as, and the tread of roller towards on the outside of peripheral radius with making the shape of narrowed width, profit The roller support 441 set used in the bottom of cloth pressing rod 45, can be pivotally supported around X-axis.Also, slider roller 44 with The groove 431 of the first half upper surface of above-mentioned presser feet arm 43 is chimeric.

In addition, on the left surface of presser feet arm 43, so that plate 432 is fixedly mounted along the state of Y direction.In fixed plate On 432, elongated hole 432a is formed along Y direction.Also, the pin 442 protruded to the right is installed on roller support 441, is inserted into In the elongated hole 432a formed on plate 432.

Cloth pressing rod 45 applies lifting by the co-operating of presser feet spring 46 described later and presser foot motor 49 Action.Also, when cloth pressing rod 45 applies down maneuver, via slider roller 44 to presser feet arm 43 and cloth pressing 41 Transmit down maneuver.In addition, when cloth pressing rod 45 applies vertical motion, via pin 442 to presser feet arm 43 and cloth presser Pin 41 transmits vertical motion.

In addition, feeding plate 71 and presser feet arm 43 move action along Y direction, but now, slider roller 44 is along pressure The groove 431 of pin arm 43 slides, and pin 442 is slided along the elongated hole that is formed on plate 432, therefore, will not hinder feeding plate 71 with And presser feet arm 43.

For cloth pressing rod 45, using the metal sleeve 451 being fixed in arm 104, it can be slidable in the vertical direction ground Support the bottom of the cloth pressing rod 45.In addition, being provided with adjusting screw 452 on the top of cloth pressing rod 45, it is fixed On head of sewing machine, abutted with the upper end of presser feet spring 46, the pretightning force of presser feet spring 46 is adjusted.Adjusting screw 452 form threaded portion in outer diameter, are fixed in a manner of adjustable upper-lower position on head of sewing machine.

Rod is fixedly mounted in the midway part of cloth pressing rod 45 and clasps portion 47, portion 47 is clasped in adjusting screw 452 and rod Between, with the presser feet spring 46 of compressive state insertion coiled type.Thus, cloth pressing rod 45 and slider roller 44 all the time via Rod is clasped portion 47 and pressed downwards.

In addition, the left side protrusion that portion 47 is clasped in rod is provided with the lug boss 471 of pole shape, the lug boss 471 is with pressing The elongated hole formed in pin guide portion 48 along Z-direction is fitted together to, and thus, rod clasps portion 47 and cloth pressing rod 45 will not be about the z axis Rotate or swung along Y direction, the lifting action that can be stablized.

Presser foot motor 49 is fixedly supported on the posterior medial of arm 104 with output shaft towards the state of X-direction.

Little gear 492 is installed on the output shaft of presser foot motor 49, with being pivotally supported on the inwall of arm 104 Gear wheel 493 engage.

In addition, gear wheel 493 to the left surface side using the rearward end of ladder screw (not shown) and transmission lever 50 with can The mode rotated around X-axis links.Thus, if presser foot motor 49 carries out rotation driving, tangent line side is applied to transmission lever 50 To shift action.Now, transmission lever 50 is along the state of substantially Y direction to configure, due to long enough in this direction, so Only transmit the moving back and forth along Y direction.

In addition, presser foot motor 49 is stepping motor, it is necessary to origin retrieval when carrying out main power source connection.Therefore, exist Shutter 501 is fixedly mounted in the assigned position of above-mentioned transmission lever 50, and the origin sensor 491 for detecting the presence of incident light will be by Detected as origin the position that shutter 501 is blocked.

Bell crank 52 is linked with the leading section of transmission lever 50.Bell crank 52 is substantially V shape, and it is central Bending section is supported on the inwall of arm 104 in which can turn about the X axis.In addition, bell crank 52 has the turning end for branching into 2 Portion, one of them links in which can turn about the X axis with the leading section of transmission lever 50, another can turn about the X axis with being attached at rod The linkage component 53 clasped in portion 47 links.

Linkage component 53 links via the elongated hole formed in its upper end and bell crank 52, and bottom can turn about the X axis Portion 47 is clasped with rod and is linked in ground.

By said structure, if a pivoting end for making bell crank 52 using transmission lever 50 rotates along Y direction, Then rotated along the vertical direction at another pivoting end, rod is clasped portion 47, cloth pressing rod via linkage component 53 45th, presser feet arm 43 and cloth pressing 41 move up and down.

Fig. 6 is the figure of the presser feet lifting mechanism 40 from facial 105 sides, and Fig. 7 is the action specification figure of auxiliary presser foot rod 54. As shown in Fig. 3, Fig. 6 and Fig. 7, auxiliary presser foot 51 is arranged on the bottom of auxiliary presser foot rod 54, is the elasticity such as rubber, rubber cushion, resin Body.The auxiliary presser foot 51 is the mode being screwed into relative to auxiliary presser foot rod 54, can carry out height regulation by rotation process. Thus, it is possible to adjust the foot pressure to main cloth C.

Alternatively, it is also possible to implement following constructions, i.e. relative to auxiliary presser foot rod 54 so that auxiliary presser foot 51 can be along X-axis Direction and Y direction carry out the mode of position adjustments, enter line slip and position is fixed.

In addition, auxiliary presser foot 51 must keep main cloth C outside the scope of the upper surface of feeding plate 71, locked in the button hole In side sewing machine 100, configuration is on right side compared with feeding the right side edge of plate 71.

Auxiliary presser foot rod 54 is by the metal sleeve 541 that is fixed in arm 104, with the central portion of the auxiliary presser foot rod 54 Ground mode can be slidable in the vertical direction to be supported.In addition, adjusting screw 542 is installed on the top of auxiliary presser foot rod 54, the tune Section screw 542 is fixed on head of sewing machine, is abutted with the upper end of presser feet spring 55, the pretightning force of presser feet spring 55 is adjusted Section.Adjusting screw 542 forms threaded portion in outer diameter, and upper-lower position is adjusted and fixed on head of sewing machine.

Rod is fixedly mounted in the midway part of auxiliary presser foot rod 54 and clasps portion 56, portion 56 is clasped in adjusting screw 542 and rod Between, with presser feet spring 55 of the compressive state inserted with coiled type.Thus, auxiliary presser foot 51 all the time via rod clasp portion 56 by Lower section presses.

In addition, the left side protrusion that portion 56 is clasped in rod is provided with the lug boss 561 of pole shape, the lug boss 561 is with pressing The elongated hole formed in pin guide portion 57 along Z-direction is fitted together to, and thus rod is clasped portion 56 and cloth pressing rod 54 and will not turned about the z axis Move or swung along Y direction, the lifting action that can be stablized.

The auxiliary presser foot 51 identically with cloth pressing 41, turn into and applies lifting from presser foot motor 49 via transmission lever 50 The construction of action.The control of presser foot motor 49 is, transmission lever 50 is switched into most progressive position, most going-back position and they it Between these three positions of midway stop position.

In the case of above-mentioned cloth pressing 41, the application of lifting action is carried out using bell crank 52, therefore, is being passed When to pass bar 50 be most progressive position, cloth pressing 41 turns into the cloth holding position most declined, in midway during stop position, cloth Presser feet 41 turns into the centre position for being located slightly away from feeding plate 71, and in most going-back position, cloth pressing 41 turns into farthest away from feeding The off-position of plate 71.

On the other hand, auxiliary presser foot 51 must be such that cloth pressing 41 does not enter to carry out sewing position movement control described later When row cloth is kept（In the case that cloth pressing 41 is centre position in the sewing machine 100）Decline and press main cloth C, In addition release conditions are turned into away from main cloth C in the case of.

Therefore, as shown in fig. 7, lever part 58 therebetween portion by ladder screw 581 with rotatable in arm 104 Mode supports, and the upper end of lever part 58 nearby links in which can turn about the X axis with the leading section of transmission lever 50, and bottom can be around X-axis is rotationally clasped the linkage component 59 in portion 56 with being attached at rod and linked.

In addition, the upper end of linkage component 59 links with lever part 58, portion is clasped with can turning about the X axis in bottom with rod 56 link.

Lever part 58 is formed as linear, therefore, in the state of turning into parallel with Z-direction at its angle of inclination, thick stick The bottom of rod unit 58 turns into extreme lower position, can decline auxiliary presser foot 51.Therefore, such as Fig. 7（B）It is shown, transmission lever 50 Link in midway stop position in a manner of the angle of inclination of lever part 58 turns into parallel with Z-direction, transmission lever 50 exists During most progressive position, such as Fig. 7（A）It is shown, link in a manner of the upper end of lever part 58 is inclined forwards, transmission lever 50 exists During most going-back position, such as Fig. 7（C）It is shown, linked in a manner of the upper end tilted rearward of lever part 58.

Thus, such as Fig. 8（A）Shown, when making transmission lever 50 turn into most progressive position, cloth pressing 41 declines and turns into cloth Expect holding position, auxiliary presser foot 51 rises and turns into off-position.In addition, such as Fig. 8（B）It is shown, in transmission lever 50 is turned into During the stop position of way, cloth pressing 41 rises to midway and turns into centre position, and auxiliary presser foot 51 declines and kept as cloth Position.In addition, such as Fig. 8（C）Shown, when making transmission lever 50 turn into most going-back position, cloth pressing 41 rises and turned into completely Off-position, auxiliary presser foot 51 rise and turn into off-position again.

In addition, the presser feet for transmission lever 50 to be positioned to most progressive position, midway stop position and most going-back position The shaft angle degree of motor 49, is stored in advance in control unit 90, by being controlled to presser foot motor 49, with as above-mentioned axle Angle, so as to realize above-mentioned Fig. 8（A）~Fig. 8（C）Each pressed state.

It is as noted above, transmission lever 50, bell crank 52, linkage component 53, lever part 58 and the structure of linkage component 59 Into linkage, the linkage can be switched over using a feed motor 49 to following states, i.e. cloth pressing 41 For cloth holding position（Hold mode）And auxiliary presser foot 51 is off-position（Releasing state）First state, and cloth presser Pin 41 is centre position（Releasing state）And auxiliary presser foot 51 is cloth holding position（Hold mode）The second state.

That is, presser feet lifting mechanism 40 has：1 actuator（Feed motor 49）And the actuator and first are pressed Foot part（Cloth pressing 41）And the second presser feet part（Auxiliary presser foot 51）The linkage of link（Transmission lever 50, bell crank 52nd, linkage component 53, lever part 58 and linkage component 59）,

Linkage can be switched over by actuator to following states, i.e. the first presser feet part be hold mode and Second presser feet part is the first state of releasing state and the first presser feet part is releasing state and the second presser feet part is guarantor Hold the second state of state.

［ control system of buttonholing machine ］

Fig. 9 is the block diagram for the control system for representing buttonholing machine 100.Buttonholing machine 100 has As the control unit 90 of action control unit, its action for being used for above-mentioned each structure is controlled.In addition, control unit 90 has Have：ROM92, it stores various control programs；CPU91, it performs control program；RAM93, it turns into CPU91 operating area； And EEPROM96, there are the various setting data needed for the action control of tailoring pattern data and sewing machine in it, and can To rewrite storage content.

In addition, it is connected with CPU91 via interface (not shown)：Sewing machine electromotor driver 22a, it is electromechanical with sewing Motivation 22 and the encoder 221 for being detected to the anglec of rotation of the sewing machine electromotor 22 connect；Pin wobbling motor Driver 27a, it is driven to pin wobbling motor 27；Feed motor driver 74a, it is carried out to feed motor 74 Driving；Feed motor driver 49a, it is driven to presser foot motor 49；Sensor driver 491a, it is to performing pressure The origin sensor 491 of the origin retrieval of pin motor 49 carries out detection control；Solenoid driver 63a, it is to cutting cloth The solenoid 63 that knife 61 lifts is driven；And line regulation solenoid driver 111a, it makes the line of line adjusting means 11 Power driving source is that line regulation solenoid 111 drives.

In addition, it is connected with CPU91：Guidance panel 94, it carries out the input of the various settings related to sewing；And Starting switch 95, it inputs the beginning of sewing.

［ the Buttonhole stitching carried out by control unit forms control ］

Multiple positions that above-mentioned control unit 90 is performed on 1 main cloth C are formed according to fixed tailoring pattern data The Buttonhole stitching of Buttonhole stitching forms control.

Figure 10 is the explanation figure of various parameters for representing to set in the tailoring pattern data of Buttonhole sewing.

In tailoring pattern data, following data are set with for Buttonhole stitching u0, i.e.（1）As button hole The cloth shearing length data of u1 length,（2）As cutting for the distance between button hole u1 and right side sewing unit u4 left end The right width data of cutter groove,（3）The left width of cutting knife groove as the distance between button hole slot u1 and left side sewing unit u2 right-hand member Data,（4）As the locking edge width data of the left and right width of side sewing unit u2, u4,（5）Front and rear length as casing-joining part u3, u5 The noose length data of degree,（6）As the 1st casing-joining part u3 and the gap data of button hole slot u1 gap length,（7）As 2nd gap data of 2 casing-joining part u3 and button hole slot u1 gap length,（8）As between 2 pins of side sewing unit u2, u4 The parallel portion spacing data of the distance of fore-and-aft direction,（9）Distance as fore-and-aft direction between casing-joining part u3, u5 2 pins Casing-joining part spacing data.

In addition, in addition to the parameter shown in Figure 10, also it is set with tailoring pattern data：As left side sewing unit u2 Sewing when line tension left parallel portion tension data, the right parallel portion of line tension during sewing as right side sewing unit u4 Tension data, the 1st casing-joining part tension data of line tension during sewing as the 1st casing-joining part u3, as the 2nd casing-joining part u5's The 2nd casing-joining part tension data of line tension during sewing etc..

In addition, for above-mentioned various parameters, it can also set from guidance panel, be logged in as tailoring pattern data.

Control unit 90 reads in specific tailoring pattern number when being sewed by the formation control of Buttonhole stitching According to according to the above-mentioned various parameters determined wherein, to the pin number needed for 1 Buttonhole sewing, the pin for each pin The actuating quantity of wobbling motor 27 and feed motor 74 calculated, and determines presser foot motor 49, cloth cutter 61 The action timing of solenoid 63 and line regulation solenoid 111, and deploy using them as control data.

Also, when each Buttonhole stitching is formed, according to the control data after expansion, perform with defined timing, Defined actuating quantity driving sewing machine electromotor 22, pin wobbling motor 27, feed motor 74, presser foot motor 49, cloth The action control of solenoid 63 and line the regulation solenoid 111 of cutting knife 61.

［ sewing position carried out by control unit moves control ］

In addition, implementing button hole according to identical tailoring pattern at multiple target sewing positions relative to main cloth C In the case of lock seaming sewing, control unit 90 it is each implement 1 Buttonhole sewing when, automatically carry out make main cloth C to The sewing position movement control of next target sewing position movement.

In the case where implementing multiple Buttonhole sewings relative to main cloth C, generally along fixed-direction between equalization Each stitching is formed every arrangement.

Therefore, in buttonholing machine 100, so that the cloth direction of feed of cloth feeding mechanism 70 is Y-axis side To, the consistent mode of orientation with multiple target sewing positions of Buttonhole sewing, main cloth C is arranged on feeding On plate 71, under the premise of this, between the target sewing position that each sewing in Y direction is preset from guidance panel 94 Every, i.e. " button hole interval ", and Buttonhole sewing number, i.e. " sewing quantity ".

Also, control unit 90 reads " button hole interval " and " sewing quantity ", control is formed based on above-mentioned stitching, When performing 1 Buttonhole sewing every time, presser feet lifting mechanism 40 and cloth feeding mechanism 70 are controlled, thus carried out The action control for making main cloth C be moved to next target sewing position, automatically and continuously perform corresponding with " sewing quantity " Buttonhole sewing.

［ the sewing action of buttonholing machine ］

By Figure 11 flow chart and Figure 12 and Figure 13 action specification figure, the sewing position of above-mentioned control unit 90 is moved The continuous formation action that dynamic control and Buttonhole stitching form multiple Buttonholes sewing of control illustrates.

The premise started as action, sets above-mentioned " button hole interval " and " sewing quantity " a, is selected to sewing pair The tailoring pattern data of elephant, transmission lever 50 is located at most going-back position and cloth pressing 41 is located at off-position, auxiliary presser foot 51 are located at off-position.

Then, it is located at initial position in feeding plate 71（Positioned at the state of the most going-back position shown in Fig. 1 and Fig. 2）State Under, main cloth C initial target sewing position is configured with the aligned beneath of suture needle 1.

Then, if pressing starting switch 95, the count value n for sewing quantity is set as 1 by the CPU91 of control unit 90 （Step S1）.

Then, drive presser foot motor 49, transmission lever 50 is set to most progressive position.Thus, cloth pressing 41 turns into Cloth holding position, auxiliary presser foot 51 turn into off-position, and the main cloth C fed on plate 71 is maintained on cloth pressing 41（Step Rapid S3, Figure 12（A）And Figure 13（A）State）.

Then, make sewing machine electromotor 22 start to drive, for each pin, implement pin wobbling motor 27 and feeding electricity The action control of motivation 74, as the needle downing position based on tailoring pattern data, to form the Buttonhole seam shown in Figure 10 The tailoring pattern of system（Step S5）.

Then, if the formation of above-mentioned tailoring pattern terminates, make sewing machine electromotor stop in the state of, only make into Driven to motor 74, feeding plate 71 is moved forwards with the amount of movement determined in " button hole interval " and perform empty feeding （Step S7）.Now, such as Figure 12（B）And Figure 13（B）State that is shown, being kept in cloth pressing 41 to main cloth C, because This, also conveys main cloth C together with feeding plate 71 forwards.

Thus, the state that next target sewing position is located at the lower section of suture needle 1 is turned into.

Then, drive presser foot motor 49, transmission lever 50 is set to midway stop position.Thus, cloth pressing 41 into For centre position, auxiliary presser foot 51 turns into cloth holding position, the main cloth being placed on the upper surface in sewing machine base portion 102 C is kept by auxiliary presser foot 51（Step S9, Figure 12（C）And Figure 13（C）State）.

Then, drive feed motor 74, feeding plate 71 is made backward with the amount of movement determined in " button hole interval " Fang Yidong, perform the empty feeding not conveyed to main cloth C（Step S11）.Now, such as Figure 12（D）And Figure 13（D）It is shown, The state kept in auxiliary presser foot 51 to main cloth C, therefore, main cloth C protects relative to the upper surface of base portion 102 Position is held, feeding plate 71 is returned to initial position.

Then, control unit 90 judges whether the count value n of sewing quantity reaches the setting value a of sewing quantity（Step S13）. Then, in the case where being not n=a, count value is made to add 1（Step S15）, and make to the processing returns to step S3, it is repeated following Action, i.e. kept to the main cloth C on feeding plate 71 using cloth pressing 41, formed to next target sewing position Buttonhole sews.

On the other hand, carry out Buttonhole sewing untill the setting value a until sewing quantity and turn into n=a feelings Under condition, presser foot motor 49 is driven, transmission lever 50 is set to most going-back position.Thus, cloth pressing 41 turns into off-position, Auxiliary presser foot 51 turns into off-position, so as to which the main cloth C fed on plate 71 can remove from the upper surface of base portion 102（Step S17, Figure 12（E）State）.

Then, the formation release sewed for a piece of main cloth C multiple Buttonholes.

［ technique effect of buttonholing machine ］

In above-mentioned buttonholing machine 100, presser feet lifting mechanism 40 has the use independently of cloth pressing 41 In the auxiliary presser foot 51 for carrying out cloth holding, the auxiliary presser foot 51 can be in the position in addition to the upper surface except feeding plate 71 Place, keeps to the main cloth C being placed on the upper surface in sewing machine base portion 102.And it is possible to pass through cloth pressing 41 Hold mode under feeding plate 71 shift action, carry out movements of the main cloth C relative to the upper surface of arm 104, can be with By the shift action of the feeding plate 71 under the hold mode of auxiliary presser foot 51, main cloth C is carried out relative to the upper of feeding plate 71 The movement on surface.Furthermore it is possible to above-mentioned shift action is combined, by multiple target sewing positions in main cloth C according to The secondary needle downing position for switching to the lower section of suture needle 1.

That is, control unit 90 passes through the first presser feet part（Cloth pressing 41）Hold mode under mounting portion（Feed plate 71） Shift action and the second presser feet part（Auxiliary presser foot 51）Hold mode under mounting portion shift action, so as to right Sewn object is changed relative to the holding position of mounting portion, and button hole lock is thus carried out on multiple positions of sewn object Side seam system.

Thus, it is not necessary to midway carries out the main cloth C carried out by operating personnel setting operation, it is possible to relative to main cloth C is continuous and automatically carries out multiple Buttonhole sewings.Further, since not halfway carry out operating personnel operation and continuously Sewed, it is possible to carry out rapid and efficient sewing.

Further, since can relative to main cloth C untill predetermined multiple Buttonhole sewing finishings, it is automatic and Constantly act buttonholing machine 100, it is possible to greatly to extend operating personnel until next subjob is treated The machine time, therefore, during this period, operating personnel can operate to other sewing machines, can individually operate more sewing Machine.

I.e., it is not necessary to make the operating speed of each Buttonhole sewing reduce, it is possible to more sewing machines are operated, The efficiency of sewing operations can be greatly enhanced.

In addition, in buttonholing machine 100, the transmission lever 50 of presser feet lifting mechanism 40, bell crank 52, connecting rod Part 53, lever part 58 and linkage component 59 form linkage, and the linkage can utilize 1 feed motor 49 Following states are switched over, i.e. cloth pressing 41 turns into cloth holding position（Hold mode）And auxiliary presser foot 51 turn into release Put position（Releasing state）First state and cloth pressing 41 turn into centre position（Releasing state）And auxiliary presser foot 51 into For cloth holding position（Hold mode）The second state.Therefore, by being exported from 1 presser foot motor 49 to fixed-direction Power, so as to apply the action of opposite direction each other to cloth pressing 41 and auxiliary presser foot 51 this 2 parts, it is possible to reduce The number of actuator, realize reduction, the simplification of control system of component costs.

Further, since cloth pressing 41 can divide three phases in cloth holding position, centre position and off-position Position switching is carried out, and after multiple Buttonhole sewing finishings, the off-position as extreme higher position is set to, so easily In by main cloth C from feeding plate 71 remove, it is possible to achieve the raising of workability.Also, on the other hand, cut by auxiliary presser foot 51 When shifting to cloth holding position, because cloth pressing 41 from cloth holding position switches to centre position, so with being protected from cloth Hold position and switch to the situation of off-position and compare, displacement tails off, and can shorten actuation time, realizes the fast of sewing operations Speedization.

That is, presser feet lifting mechanism 40 can be by the first presser feet part（Cloth pressing 41）Height switch to for keeping quilt The holding position of sewing object, position higher compared with the holding position are the off-position of sewn object and positioned at holding Centre position between position and off-position, in the hold mode of the second presser feet part, by the way that the first presser feet part is set For centre position, so as to shorten actuation time, the fast of sewing operations is realized.

［ comparison between the cloth pressing in corresponding 2 holes and corresponding 3 holes ］

Figure 14 be represent 2 holes of correspondence longer in the Y-axis direction compared with cloth pressing 41 cloth pressing 41A it is oblique View, Figure 15 are the strabismus for the cloth pressing 41A for representing 3 holes of correspondence longer in the Y-axis direction compared with cloth pressing 41 Figure.

On cloth pressing 41A, along Y direction arrange and formed 2 opening portions 411,411, they be spaced with Above-mentioned button hole interval is equal.In addition, on cloth pressing 41B, along Y direction arrange and formed 3 opening portions 411, 411st, 411, being spaced for adjacent each opening portion 411 is equal with above-mentioned button hole interval.

Above-mentioned cloth pressing 41A, 41B pass through the shape that is kept to main cloth C on the upper surface of feeding plate 71 respectively Under state, moved without release movement with together with feeding plate 71, so as to by 2 of main cloth C or 3 targets Sewing position is positioned at needle downing position.

In addition, respectively support cloth pressing 41A and cloth pressing 41B presser feet foot 42A, 42B, with cloth pressing 41A, 41B Y direction length is corresponding and is formed in the direction longlyer.

In addition, though eliminate diagram, but corresponding feeding plate shape turns into respectively with presser feet foot 42A, 42B, and it is open Portion is corresponding with presser feet foot 42A, 42B length and extends along Y direction.

Above-mentioned cloth pressing 41A, 41B are installed on do not carry auxiliary presser foot 51 existing Buttonhole sewing In the case of on machine, during the time needed for the Buttonhole sewing at 2 positions or 3 positions, operator Member need not carry out main cloth C setting operation, it is possible to other sewing machines are operated in the stand-by time.

But in the case where above-mentioned buttonholing machine and buttonholing machine 100 are compared, knob The sewing quantity that button hole serging machine 100 sews for Buttonhole does not limit, and continuously can arbitrarily be stitched The Buttonhole sewing of quantity processed.That is, the situation with using the buttonholing machine for being equipped with cloth pressing 41A, 41B Compare, the operation of more buttonholing machines can be carried out by a people, in terms of operating efficiency preferably.

Furthermore it is possible to cloth pressing 41A, 41B maximization are avoided, by ensuring the operating space, so as to avoid The maximization of sewing machine or the maximization of the feed motor 74 as caused by the weight increase of cloth pressing.

In addition it is also possible to cloth pressing 41A, 41B are carried on buttonholing machine 100.In the case, may Produce the maximization of sewing machine or the maximization etc. of feed motor 74, but due to can make feeding plate 71 Y direction it is past Multiple action frequency is reduced, it is possible to the time required to shortening the sewing per a piece of main cloth C, it is possible to achieve sewing efficiency carries It is high.

［ other action examples of buttonholing machine ］

Shown in Figure 12 and Figure 13 sewing action be illustrated left front main cloth C and along cloth left end formed it is more The situation of individual Buttonhole sewing, using Figure 16~Figure 20 action specification figure, illustrates the main cloth D edges before relative to the right side The preferable sewing that the right-hand end of cloth is carried out in the case of forming multiple Buttonhole sewings by control unit 90 acts.

The top of cloth is arranged on feeding plate 71 with the state towards front in the case of main cloth C, but in the figure In the case of 16~Figure 20 action example, main cloth D top is arranged on feeding plate 71 with the state towards rear, makes the master Cloth D is fed in order towards rear.

First, it is located at most going-back position in transmission lever 50, cloth pressing 41 is located at off-position, and auxiliary presser foot 51, which is located at, to be released Position is put, feeding plate 71 is located in the state of initial position, made under main cloth D initial target sewing position and suture needle 1 Align and set in side.

Then, by pressing starting switch 95, so as to make transmission lever 50 turn into most progressive position using presser foot motor 49. Thus, as shown in figure 16, cloth pressing 41 turns into cloth holding position, and auxiliary presser foot 51 turns into off-position, feeds on plate 71 Main cloth D kept by cloth pressing 41.

Then, sewing is performed according to tailoring pattern data.If the Buttonhole sewing knot at the target sewing position Beam, then as shown in figure 17, transmission lever 50 is set to midway stop position using presser foot motor 49, during cloth pressing 41 is set to Between position, auxiliary presser foot 51 is set to cloth holding position.

Then, as shown in figure 18, drive feed motor 74, feeding plate 71 is carried out empty feeding forwards.Thus, phase Feeding plate 71 is set to move forwards for main cloth D.Amount of movement now is to be moved with " button hole interval " identical of setting Amount.

Then, reuse presser foot motor 49 and transmission lever 50 is switched into most progressive position, as shown in figure 19, by cloth Presser feet 41 is set to cloth holding position, and auxiliary presser foot 51 is set into off-position.Thus, main cloth D is kept on feeding plate 71.

Then, as shown in figure 20, drive feed motor 74, with the amount of movement determined in " button hole interval " make into Rearward moved to plate 71, perform empty feeding.Now, due to being maintained at main cloth D in cloth pressing 41 on feeding plate 71 State, so main cloth D is rearward conveyed relative to the upper surface of base portion 102 with " the button hole interval " set.Cause This, main cloth D turns into the state that next target sewing position aligns with needle downing position, can carry out sewing next time.So Afterwards, after Figure 16~Figure 20 action is repeated with " the sewing quantity " of setting, transmission is made by using presser foot motor 49 Bar 50 turns into most going-back position, so as to discharge main cloth D, thus directed towards the sewing finishing of the main cloth D before the right side.

Order as noted above, being acted by suitably changing the sewing realized by control unit 90, so as to be locked in button hole In side sewing machine 100, it can carry out rapid to both of the left front main cloth C and main cloth D before the right side and efficiently sew.

［ the other configurations example of auxiliary presser foot ］

In addition, in buttonholing machine 100, as shown in figure 21, it can also turn into auxiliary presser foot 51 and be adapted to the right side Preceding main cloth D configuration.

In above-mentioned buttonholing machine 100, as shown in fig. 6, auxiliary presser foot 51 is configured in feeding plate 71 Right side, but this configuration can also be substituted, as shown in figure 21, auxiliary presser foot 51 is configured in the left side of feeding plate 71.In this feelings Under condition, preferably auxiliary presser foot 51 turns into the configuration as close possible to needle downing position.If the reason is that matched somebody with somebody using remote Put, then in the case where initial target sewing position is close to main cloth D end, produce auxiliary presser foot 51 not in main cloth D In the range of situation about being pressed.

It is as noted above, can be before by the right side in the case where auxiliary presser foot 51 to be configured to the left side of feeding plate 71 While main cloth D is conveyed forwards, Buttonhole sewing sequentially is carried out to each target sewing position.

［ other examples of presser feet lifting mechanism ］

Presser feet lifting mechanism 40 shown in Fig. 3 uses the presser foot motor 49 as single actuator, carries out cloth presser Both pin 41 and auxiliary presser foot 51 position switching, but can also be as shown in figure 22 presser feet lifting mechanism 40C shown in form For the position that cloth pressing 41 is carried out using the first presser foot motor 494C is switched, and is carried out using the second presser foot motor 495C The position switching of auxiliary presser foot 51.

In the case, for each presser foot motor 494C, 495C, little gear 492, gear wheel 493 is set and transmitted Bar 50, make the presser foot motor 494C sides of bell crank 52 and first transmission lever 50 leading section link, make lever part 58 with The leading section of the transmission lever 50 of second presser foot motor 495C sides links.Also, distinguish for each presser foot motor 494C, 495C It is controlled, performs Fig. 8（A）~Fig. 8（C）Shown cloth pressing 41 and 3 position switching states of auxiliary presser foot 51.

As noted above, presser feet lifting mechanism 40C has respectively：Actuator（First presser foot motor 494C）, it is to One presser feet part（Cloth pressing 41）Hold mode and releasing state switch over；And actuator（Second presser foot motor 495C）, it is to the second presser feet part（Auxiliary presser foot 51）Hold mode and releasing state switch over.

In the case where above-mentioned presser feet lifting mechanism 40C is equipped on buttonholing machine 100, can also obtain To with the identical effect of presser feet lifting mechanism 40.

But in this case it is desirable to 2 actuators, the components number increase transmitted, but due to cloth can be made Presser feet 41 and auxiliary presser foot 51 do not link and independently acted, it is possible to are realized by action control with a greater variety to each presser feet 41,51 trickle action timing adjustment.

In addition, for from each presser foot motor 494C, 495C to the action transmission mechanism of each presser feet 41,51, for example, this two Person uses bell crank, or both of which to use lever part etc., it is possible to achieve the list of part generalization and mechanism construction Pure simplification.

In addition, eliminating diagram in fig. 22, but respectively origin must be set to pass for each presser foot motor 494C, 495C Sensor 491.

［ other examples of auxiliary presser foot ］

Auxiliary presser foot 41 uses the elastomer of tabular as shown in Figure 3, but is not limited to this, such as can also be as shown in figure 23 Using the auxiliary presser foot 51D of roller shape, it utilizes the support shaft 511D along X-direction in the bottom of auxiliary presser foot rod 54 It is pivotably supported.In the case of auxiliary presser foot 51D, also preferably formed identically with auxiliary presser foot 51 by elastomeric material.

In the case of the auxiliary presser foot 51D of above-mentioned rollers shape, work, and entering identically with auxiliary presser foot 51 During row pressing, it may be easy to make main cloth C moving direction only to produce movement in the Y-axis direction.

［ other ］

In addition, in control unit 90, can also by above-mentioned " button hole interval ", " sewing quantity ", as sewing object Tailoring pattern data all determine after data as 1 continuous stitch data, sign in in EEPROM96.In this situation Under, a variety of continuous stitch datas can also be logged in and suitably selected.

In addition, the driving source for making the lifting action of the cloth pressing 41 and auxiliary presser foot 51 in presser feet lifting mechanism 40 is Motor, but this is not limited to, the actuator of direct acting class, such as solenoid or cylinder can also be used.

In addition, the cloth pressing 41 in as presser feet lifting mechanism 40（First presser feet part）Driving source and use electricity Motivation（Actuator）, as auxiliary presser foot（2nd presser feet part）Driving source and use cylinder（Actuator）In the case of, easily Expect by installing cylinder on the head of sewing machine of existing type, and load the program for driving auxiliary presser foot, so as to Using this point of the present invention.

Claims (4)

1. a kind of buttonholing machine, it has：

Feed mechanism, it has the mounting portion for being used for loading sewn object, by making the mounting portion be moved along fixed direction of feed It is dynamic, so as to carry out the feeding of the sewn object；

Suture needle reciprocating mechanism, it moves up and down suture needle；

Pin swing mechanism, it makes the suture needle be moved along the direction orthogonal with the direction of feed；And

First presser feet part, it keeps in the top of the mounting portion to the sewn object,

The buttonholing machine passes through the feed mechanism, the suture needle reciprocating mechanism and the pin swing mechanism Co-operating, so as to carry out Buttonhole sewing to the sewn object being placed in the mounting portion,

Characterized in that, have：

Second presser feet part, it keeps in the outside of the mounting portion to the sewn object；

Presser feet lifting mechanism, it switches the first presser feet part to the hold mode of the sewn object and releases state, with And switching the second presser feet part is to the hold mode and releasing state of the sewn object；And

Control unit, its by under the hold mode of the first presser feet part and the releasing state of the second presser feet part by The shift action of the mounting portion and the releasing state of the first presser feet part that the feed mechanism is realized and described the The shift action of the mounting portion realized by the feed mechanism under the hold mode of two presser feet parts, change is described to be stitched Thus thing processed, Buttonhole is carried out on multiple positions of the sewn object relative to the holding position of the mounting portion Sewing.

2. buttonholing machine according to claim 1, it is characterised in that

The presser feet lifting mechanism has 1 actuator and presses the actuator, the first presser feet part and described second The linkage that foot part links,

The linkage by the control unit to the actuator by being controlled, so as to switch to following state, That is, described first presser feet part turn into hold mode and the second presser feet part turn into releasing state first state and The first presser feet part, which turns into releasing state and the second presser feet part, turns into the second state of hold mode.

3. buttonholing machine according to claim 1, it is characterised in that

The presser feet lifting mechanism has what the hold mode and releasing state of the first presser feet part were switched over respectively Actuator and to the hold mode of the second presser feet part and release the actuator that state switches over.

4. the buttonholing machine according to Claims 2 or 3, it is characterised in that

The presser feet lifting mechanism by the control unit to the actuator by being controlled, so as to which described first is pressed The height of foot part switches to the holding position for keeping the sewn object, the quilt as the higher position compared with the holding position The off-position of sewing object and as the centre position between the holding position and the off-position,

When the second presser feet part is in hold mode, the first presser feet part turns into the centre position.