CN106048906A - Buttonholing sewing machine - Google Patents

Abstract

A buttonholing sewing machine (1) in which a buttonholing sewing control is performed for formation of buttonholing seam. In performing a buttonholing sewing control, a control device (70) causes formation of a double buttonholing seam around a buttonhole and causes a knife mechanism (30) to form a buttonhole before formation of a second buttonholing seam and performs an opening width varying control of controlling a press mechanism (40) so that it makes the buttonhole opening width larger in forming the second buttonholing seam than in forming a first buttonholing seam. The thus-configured buttonholing sewing machine (1) can form a double buttonholing seam satisfactorily.

Description

Buttonholing machine

Technical field

The present invention relates to a kind of buttonholing machine.

Background technology

Electronics round-nose button hole serging machine, is being arranged at shape at the sewn object of feeding station Become the round-nose button hole lock seaming stitching being made up of line part and round head, this electronics round-nose button hole Serging machine makes sewing machine electromotor drive mechanism, slew gear, XY drive mechanism, pressure The co-operatings such as foot mechanism and carry out round-nose button hole lock seaming sewing, wherein, sewing machine electromotor Drive mechanism is for the needle bar of suture needle be arranged at the looper of lower section of needle bar (looper) being driven with wire grip (spreader), slew gear is in order to radial shape Becoming stitching to make needle bar, looper and wire grip revolution, XY drive mechanism is for by feeding station Along all around driving, presser foot device presses from left and right to the sewn object feeding station. When sewing, in order to produce the three-dimensional winding (volume) of the stitching of hole lock seaming, also set up Have and heart yearn is sewed up such heart yearn feed mechanism (for example, referring to patent documentation 1) simultaneously.

It addition, above-mentioned electronics round-nose button hole serging machine, it is possible to existed by cloth cut device Sphaerocepharous hole is cut at sewn object.And, this electronics round-nose button hole serging machine energy Enough selection makes the front cutting knife mode of cloth cutter action and before sewing after sewing Make the rear cutting knife mode of cloth cutter action.

It addition, in other buttonholing machines, sew shape by being repeated twice The tailoring pattern (for example, referring to patent documentation 2) of mark into a line.

It addition, in another buttonholing machine, in the parallel sewing part of left and right After place carries out the reinforcement sewing that pin amplitude of oscillation ratio is the least in advance, common tailoring pattern is utilized to be formed Buttonhole stitching (for example, referring to patent documentation 3).

Patent documentation 1: Japanese Unexamined Patent Publication 2013-252159 publication

Patent documentation 2: Japanese Unexamined Patent Publication 11-333164 publication

Patent documentation 3: Japanese Unexamined Patent Publication 2009-006196 publication

In round-nose button hole lock seaming sewing machine for sewing, owing to passing through cloth pressing pair from left and right Sewing object carries out pressing, form stitching between cloth pressing about this, therefore to suppression Floating of cloth, to pull in the way of the extension of left and right by the cloth pressing of left and right The cloth of cloth is opened, while carrying out the formation of stitching.

It addition, in round-nose button hole lock seaming sewing machine for sewing, as illustrated as the former, it is possible to choosing Select front cutting knife mode and rear cutting knife mode.

In rear cutting knife mode, the cloth of the state being formed without button hole is carried out stitching shape Become, therefore there is the such advantage of stitching not entanglement, but in order to make suture not cut off by cutting knife, Need to carry out falling to the position away from button hole pin, it is difficult to is hidden by cloth around button hole In stitching.

On the other hand, in front cutting knife mode, it is possible to prevent the cut-out of suture, by button hole Cloth around is hidden in stitching, therefore cutting knife mode before finished product is pursued in the case of high-quality It is effective.But, in front cutting knife mode, if reduced to improve the quality of finished product The interval of the parallel stitching of the left and right sides of button hole, then sometimes more than button hole to adjacent Parallel sewing interval is carried out falling pin, it is possible to make button hole be blocked.

Therefore, in the case of being sewed by front cutting knife mode, after forming button hole, Open along the cloth carrying out pulling cloth in the way of the extension of left and right on one side by the cloth pressing of left and right, While carrying out the formation of stitching.

Following technology is worked out for above-mentioned round-nose button hole lock seaming sewing machine for sewing, i.e. By carrying out the such double superposition of the buttonholing machine of such as patent documentation 2 or 3 Sewing, thus replace use heart yearn and make stitching have three-dimensional winding.

But, in the feelings that double superposition sewing is applied to round-nose button hole serging machine Under condition, if having carried out sewing cloth is opened in front cutting knife mode, then The formation of one weight stitching is opened by cloth and can be carried out well, but is forming double line During mark, owing to making cloth become the state terminating to open by the first weight, therefore cannot Obtain the effect that cloth is opened fully, there is following problems, i.e. cannot be prevented fully Stop the effect of the pin that falls to the adjacent sewing interval exceeding button hole.

Summary of the invention

The purpose of buttonholing machine involved in the present invention is, when superposition sews Form good hole lock seaming stitching, there are following (1)～the arbitrary characteristics of (6).

(1)

A kind of buttonholing machine, it possesses:

Suture needle reciprocating mechanism, it carries out pin swing makes needle bar move up and down；

Looper mechanism, it possesses looper, wire grip and to this looper and wire grip The looper pedestal being supported；

Slew gear, it makes described looper pedestal and carries out the needle bar revolution of described pin swing；

Feed mechanism, it makes described sewn object move along the mounting surface of mounting sewn object；

Cutter mechanism, it forms button hole at described sewn object；

Presser foot device, it is by pressing described sewn object, while by described Sewn object extends such that it is able to move along the direction orthogonal with the length direction of described button hole Dynamic；And

Controlling device, it carries out formation button hole around the forming position of described button hole The Buttonhole sewing of lock seaming stitching controls,

This buttonholing machine is characterised by,

Described control device perform described Buttonhole sewing control in the case of,

Form described Buttonhole stitching around described button hole doublely, and Before forming the Buttonhole stitching of the second weight, form button hole by described cutter mechanism,

Performing opening variation for described presser foot device to control, the variation control of this opening is, Compared with during the Buttonhole stitching forming the first weight, at the button hole forming described second weight The opening of the described button hole realized by described presser foot device is increased during lock seaming stitching.

(2)

According to the buttonholing machine described in (1), it is characterised in that

Described control device perform described Buttonhole sewing control in the case of,

It is controlled in the following manner for described cutter mechanism, i.e. forming described first After the Buttonhole stitching of weight and before forming the Buttonhole stitching of described second weight, logical Cross described cutter mechanism and form button hole.

(3)

According to the buttonholing machine described in (1) or (2), it is characterised in that

Being also equipped with performing configuration part, this execution configuration part controls with or without the variation of described opening Execution be set,

Described control device,

The variation of described opening control be set as having execution in the case of, perform described Buttonhole sewing performs the variation of described opening and controls when controlling,

The variation of described opening control be set as without performing in the case of, perform described Buttonhole sewing control time, with formed described first weight Buttonhole stitching time and The mode control of constant opening is all maintained when forming the Buttonhole stitching of described second weight Make described presser foot device.

(4)

According to (1) to buttonholing machine described any one of (3), it is special Levy and be,

It is also equipped with:

Data store, the tailoring pattern of its storage multiple formation described Buttonhole stitching Data；And

Data selecting section, it is from the plurality of tailoring pattern being stored in described data store In data, select to be formed tailoring pattern data and the shape of the Buttonhole stitching of described first weight Become the tailoring pattern data of the Buttonhole stitching of described second weight,

Described control device, in the case of performing the sewing control of described Buttonhole, is carried out Following control, i.e. based on two the tailoring pattern data selected by described data selecting section, Form double Buttonhole stitching.

(5)

According to (1) to buttonholing machine described any one of (4), it is special Levy and be,

For described presser foot device, by making the action of multiple cylinder be combined, so that Institute when described button hole being extended along the direction orthogonal with the length direction of described button hole State the size variation of sewn object amount of movement.

(6)

According to (1) to buttonholing machine described any one of (5), it is special Levy and be,

For described presser foot device, the quantity delivered of the air by supplying to cylinder, so that Institute when described button hole being extended along the direction orthogonal with the length direction of described button hole State the size variation of sewn object amount of movement.

The effect of invention

About buttonholing machine involved in the present invention, control device and lock at button hole Side seam system is formed double for Buttonhole stitching in controlling, and presser foot device is performed opening Variation controls, i.e. compared with during the Buttonhole stitching forming the first weight, forming second Opening is increased during the Buttonhole stitching weighed.

When forming double Buttonhole stitching, the first weight and the second heavy dressing are added constant In the case of opening, the button of sewn object when forming the Buttonhole stitching of the second weight Hole is over opening, and the Buttonhole stitching of the second weight is formed the most well.But, In the variation of above-mentioned opening controls, when forming the Buttonhole stitching of the second weight, it is possible to Compare during the sewing that the button hole and first of sewn object is weighed and open further, it is also possible to be good Ground forms the Buttonhole stitching of the second weight.It addition, thus at the button hole forming the second weight It also is able to suppress floating of sewn object more well during lock seaming stitching, it is possible to make quality of sewing Improve.

Accompanying drawing explanation

Fig. 1 is the side view of the buttonholing machine involved by present embodiment.

Fig. 2 is the front view of the buttonholing machine of Fig. 1.

Fig. 3 is the block diagram of the control system of the buttonholing machine representing Fig. 1.

Fig. 4 is the top view of feeding station and presser foot device.

Fig. 5 is the front view of guidance panel.

Fig. 6 is the one of the setting item representing the tailoring pattern data set by guidance panel Look at the explanatory diagram of table.

Fig. 7 (A) is the explanation of the global shape showing schematically round-nose button hole lock seaming sewing Figure, Fig. 7 (B) is the explanatory diagram of the size representing each portion.

Fig. 8 (A) is the explanatory diagram of the concrete example in the round end hole representing the benchmark becoming round head, Fig. 8 (B) is the explanatory diagram of each size representing this round end hole.

Fig. 9 be represent the tailoring pattern data from buttonholing machine setting input The flow chart of the process of the globality controlling to Buttonhole sewing.

Figure 10 be represent the tailoring pattern data from buttonholing machine setting input The process of the globality controlling to Buttonhole sewing, immediately flow process after Fig. 9 Figure.

Figure 11 is the flow chart that the setting about tailoring pattern data processes.

Figure 12 is the knot representing the size only being regulated cloth opening by the first opening and closing cylinder The explanatory diagram of structure example.

The explanation of label

1 buttonholing machine

2 sewing machine stands

11 suture needles

12 needle bars

13 needle bar rotary tables

17 sewing machine electromotors

20 slew gears

30 cutter mechanisms

40 presser foot devices

41 cloth support plates

42 elevating mechanisms

421 cloth pressings

425 cloth pressing cylinders

43 switching mechanisms

438 first opening and closing cylinders

439 second opening and closing cylinders

50 cloth feeding mechanisms

51 feeding station

60 looper mechanisms

61 looper pedestals

70 control device

74 EEPROM (data store)

75 guidance panels (data selecting section)

P1 position

P2 position

P3 position

S off-position

Detailed description of the invention

[overall structure of embodiment]

Based on Fig. 1 to Figure 11, the Buttonhole involved by embodiments of the present invention is stitched Machine 1 of threading illustrates.Fig. 1 is the side view of buttonholing machine 1, and Fig. 2 is button The front view of hole catch sewing machine 1, Fig. 3 is the control system representing buttonholing machine 1 The block diagram of system.This buttonholing machine 1 can carry out round-nose button hole lock seaming sewing Round-nose button hole serging machine.

As it is shown in figure 1, buttonholing machine 1 possesses sewing machine stand 2, this sewing machine stand 2 possess: base portion 2a of box like, and it is positioned at bottom in sewing machine entirety；Longitudinal body portion 2b, it is arranged at the one end of this base portion 2a；And arm 2c, it is from this longitudinal direction body Portion 2b is extended along the direction identical with base portion 2a.

Additionally, in the following description, the vertical uprightly arranged by longitudinal body portion 2b is upper and lower Direction is set to Z-direction, will and base portion 2a orthogonal with Z-direction and arm 2c Length direction be set to Y direction, by the side orthogonal with Y direction and Z-direction To being set to X-direction.

It addition, the direction that Y direction and arm 2c are extended from longitudinal body portion 2b Before being set to, after its opposition side is set to, by X-direction and from the leading section with arm 2c Left-hand side during relative state observation is set to a left side, and right-hand side is set to the right side.

As shown in FIG. 1 to 3, above-mentioned buttonholing machine 1 possesses: needle bar 12, It is to through there being the suture needle 11 reached the standard grade to keep；Needle bar rotary table 13, it can be swingingly Support needle bar 12；Suture needle reciprocating mechanism (omits diagram), and it makes to move down on needle bar 12 Move and swing；Looper mechanism 60, it forms Buttonhole stitching；Revolution Mechanism 20, it makes the looper pedestal 61 of needle bar rotary table 13 and looper mechanism 60 turn round； Sewing machine electromotor 17, it becomes the driving source of sewing action；Libra 14, its carry out from The extraction reached the standard grade mentioning or supplying from line source reached the standard grade of suture needle side；Line adjusting means (omitting diagram), it is to applying tension force of reaching the standard grade；Cloth feeding mechanism as feed mechanism 50, it will move with arbitrary amount of movement as the cloth of sewn object along X-Y plane And position；Thread cutter (omits diagram), and it carries out the tangent line reached the standard grade and roll off the production line；Cutter machine Structure 30, it forms button hole；Presser foot device 40, cloth is pressed against cloth feeding mechanism by it The upper surface of the feeding station 51 of 50；And the control device 70 as control portion, it is carried out respectively The control in portion.

[needle bar relation]

As shown in Figures 1 and 2, needle bar 12 becomes following structure, i.e. form inner hollow Tubulose, and its upper end from the upper surface of the arm 2c of sewing machine stand 2 to outside protrude, Insert from upper end open portion and reach the standard grade, by guiding the suture needle to bottom by reaching the standard grade inside its hollow 11。

As shown in Figures 1 and 2, suture needle reciprocating mechanism possesses: needle bar 12, and it keeps Suture needle 11；Upper shaft, it is sewed electric motor 17 and applies the moment of torsion of full rotation；Crank mechanism, It extracts the reciprocating driving force of above-below direction from upper shaft；Swing wrist, its made by crank mechanism and The leading section that needle bar 12 links vertically swings；Sleeve, it can support pin up or down Rod；And laminal plate-shaped springs, it is along X-Y plane, supports this sleeve.

This suture needle reciprocating mechanism, by crank mechanism to needle bar 12 with electronic with sewing machine (umber of reciprocation of time per unit, below " the most past for the umber of reciprocation that the rotating speed of machine 17 is directly proportional Plural number " in the case of the most identical) apply back and forth move up and down.It addition, support needle bar 12 Sleeve can swingingly be supported by the plate-shaped springs along X-Y plane, thus so that pin can be made The mode that any direction in suture needle 11 lateral X, Y of the bottom of rod 12 swings supports pin Rod 12.

Further, suture needle reciprocating mechanism possesses: needle bar oscillating table, and it allows needle bar 12 move up and down, while applying the reciprocally swinging action along X-direction to this needle bar 12； And transmission mechanism, it applies reciprocal upper and lower by sewing machine electromotor 17 to needle bar oscillating table Mobile.The compound direction that this needle bar oscillating table is formed along X-direction and Z-direction tilts Cam path, needle bar rotary table 13 is in the way of enabling needle bar oscillating table to move along cam path It is supported.

And, if needle bar oscillating table is passed mechanism and applies down maneuver, then this needle bar pendulum Dynamic platform to movement, applies swing towards left to needle bar 12 along cam path obliquely downward to the left. If it addition, needle bar oscillating table is passed mechanism applies vertical motion, then this needle bar oscillating table edge Cam path oblique direction to the right moves, and applies the swing towards right to needle bar 12.

This transmission mechanism applies with the umber of reciprocation of the 1/2 of the umber of reciprocation moved up and down of needle bar 12 Moving up and down, thus, needle bar 12 declines when swinging the most to the left and right, it is possible to carry out Pin swings.

It addition, there is not the state of flexure in aforesaid plate-shaped springs in suture needle reciprocating mechanism Under be supported in the way of needle bar 12 becomes Z-direction (vertical), basic at this In attitude, carry out the pin that falls that pin described later swings the interior pin of stitching.It addition, from basic poses Apply wobbling action and become along X-direction and Z-direction compound direction with regulation angle The state that degree tilts, under this heeling condition, carries out the pin that falls that pin swings the outer pin of stitching.

At the needle bar rotary table 13 downside near the leading section of the arm 2c of sewing machine stand 2 Can be supported rotatably about the z axis, and fixed equipment is had the synchronization setting up slew gear 20 Belt wheel 131 with 21.Thus, if being applied in revolution action from slew gear 20, then can Enough apply revolution action about the z axis via aforesaid needle bar oscillating table to needle bar 12.

It addition, needle bar rotary table 13 turns round about the z axis when supporting needle bar oscillating table, Needle bar 12 is not limited to left and right directions, it is possible to make needle bar 12 along in Z axis being Any direction of the heart swings.

[looper mechanism]

As it is shown in figure 1, looper mechanism 60 be configured at sewing machine base portion 2a top, And the downside of the feeding station 51 of cloth feeding mechanism 50 described later.This looper mechanism 60 has Standby: looper pedestal 61, it can be rotatably supported at sewing machine base portion 2a about the z axis； Left looper and left wire grip, they are equipped on the top of looper pedestal 61, twine to reaching the standard grade Double circumferential weld system is carried out around rolling off the production line；Right looper and right wire grip, they are carried out by reaching the standard grade Single line circumferential weld system；And drive mechanism, it applies to be used for sewing to each looper and each wire grip The wobbling action of regulation.

Looper pedestal 61 is concentric with the gyroaxis of aforesaid needle bar rotary table 13, can return Turn ground to be supported, and fixed equipment has the belt wheel of the Timing Belt 23 setting up slew gear 20 26。

Left looper and left wire grip and right looper and right wire grip, at looper pedestal 61 Top at be configured at the radial direction two ends of circle centered by gyroaxis each other.And, if Determine the basic angle of revolution of looper pedestal 61, so as to following configuration, i.e. at seam Time processed, left looper and left wire grip carry out double ring relative to the pin that falls of the interior pin of needle bar 12 Sewing, right looper and right wire grip carry out single line ring relative to the pin that falls of the outer pin of needle bar 12 Sewing.

Drive mechanism possesses: the looper drive shaft 62 of circular tube shaped, it is at looper pedestal 61 Center position can be supported up or down；Wire grip drive shaft 63, it inserts dress Standby in the inner side of looper drive shaft 62；Transmission mechanism, it passes through looper drive shaft 62 Back and forth move up and down make left and right looper swing；Transmission mechanism, it is driven by wire grip Back and forth moving up and down of axle 63 makes the wire grip of left and right swing；And respective cam mechanism, They from carried out by sewing machine electromotor 17 rotate drive lower axle make each drive shaft 62, 63 move up and down.

Drive mechanism with the umber of reciprocation moved up and down of needle bar 12 (with sewing machine electromotor 17 Rotating speed identical) 1/2 umber of reciprocation to each drive shaft 62,63 apply move up and down, by This, when needle bar 12 declines every time about looper and wire grip can be alternately carried out from Suture needle 11 catches and reaches the standard grade.

[slew gear]

As shown in FIG. 1 to 3, slew gear 20 possesses: slewing motor 24, its configuration In sewing machine base portion 2a；Transmission belt wheel 22 (belt wheel of downside omits diagram), it sets It is placed in the transmission axle for the moment of torsion of slewing motor 24 being transferred to needle bar rotary table 13 side 25 upper and lower；Timing Belt 23, it is erected at the master of the output shaft being arranged at slewing motor 24 Movable belt pulley, the belt wheel 26 being arranged at aforesaid looper pedestal 61 and the biography of aforesaid downside Pass between belt wheel；And Timing Belt 21, its be erected at upside transmission belt wheel 22 be arranged at Between the belt wheel 27 of aforesaid needle bar rotary table 13.

Slew gear 20 sets the transmission ratio of each belt wheel, so that by slewing motor 24 Rotation drive, make looper pedestal 61 and needle bar rotary table 13 rotate with same phase. That is, slew gear 20 is with the pin swaying direction of needle bar and the looper of left and right and the row of wire grip The mode that column direction consistently carries out turning round applies revolution action.

[cloth feeding mechanism]

As shown in FIG. 1 to 3, cloth feeding mechanism 50 is made up of components described below: feeding station 51, it possesses the mounting surface of the cloth parallel with X-Y plane；As cloth travel motor X-axis motor 52, it makes feeding station 51 move along X-direction；Move as cloth The Y-axis motor 53 of motor, it makes feeding station 51 move along Y direction；And it is public The Poewr transmission mechanism known, the rotary driving force of each motor 52,53 is transformed to along X by it Direction of principal axis and the linear driving force of Y direction and apply to feeding station 51.

[cutter mechanism]

As shown in FIG. 1 to 3, cutter mechanism 30 configures to form button hole at cloth Rear in needle bar 12.

That is, cutter mechanism 30 possesses: cutting knife receiving portion 32, and it is at the bottom of arm 2c Can be supported up and down；Cloth cutter 31, it is relative with cutting knife receiving portion 32, with fixing State is configured at the top of base portion 2a；Cutting knife motor 33, it becomes cutting knife receiving portion The lifting of 32 drives source；And not shown Rack and pinion mechanism, it is by cutting knife motor The torque conversion of 33 is lifting action and is transferred to cutting knife receiving portion 32.

Cutting knife receiving portion 32 prepares multiple corresponding to the shape of button hole to be formed, it is possible to Change.

Cloth cutter 31 is configured at the lower section of the peristome 511 that can open, this peristome 511 It is formed at the X-direction central part of feeding station 51, is configured to hinder cutting knife receiving portion 32 Decline and with cloth cutter 31 coincide backward cloth formed button hole.

[presser foot device]

Fig. 4 is the top view of presser foot device 40.Presser foot device 40 possesses: a pair cloth props up Board 41,41, they are relative to the peristome 511 of the upper surface of feeding station 51, to pass through It is positioned at centered by off-position S that the cutter mechanism 30 of X-direction central part is formed along left Right direction can be supported movably；A pair cloth pressing elevating mechanism 42,42, they set It is placed in the rear end upper surface of each cloth support plate 41,41；And a pair switching mechanism 43,43, They apply the shift action of left and right directions to each cloth support plate 41,41.

Additionally, cloth support plate 41,41, cloth pressing elevating mechanism 42,42 and opening/closing machine Structure 43,43 is pair of right and left, and its configuration and structure are with cutting of being formed by cutter mechanism 30 Become symmetrical centered by disconnected position S.Therefore, in the diagram, about cloth support plate 41 and cloth pressing elevating mechanism 42 only illustrate left side structure, about switching mechanism 43 Only illustrate the structure on right side.In the following description, about cloth pressing elevating mechanism 42 The most only the structure in left side is illustrated, the most only the structure on right side is entered about switching mechanism 43 Row explanation.

A pair cloth support plate 41,41 is to be blocked by the peristome 511 of feeding station 51 The flat board that mode flatly configures, across off-position S formed by cutter mechanism 30 It is respectively arranged at the left and right sides.Each cloth support plate 41,41 is flatly supported, table on it Face becomes the mounting surface of mounting cloth.

Each cloth support plate 41,41 can move the most in left-right direction relative to feeding station 51 Dynamic ground is supported, and also can formed by cutter mechanism 30 in the case of the most immediate The formation gap, top of off-position S.And, each cloth support plate 41,41 is from connecing most Near position is moved along direction separated from one another.By above-mentioned each cloth support plate 41,41 Contact separation shift action, be placed in the cloth of the upper surface of each cloth support plate 41,41, After forming button hole or when sewing, it is possible to make this button hole along with its length direction just The direction handed over carries out opening and closing.

After the cloth pressing elevating mechanism 42 in left side is installed on the cloth support plate 41 in left side End upper surface.This cloth pressing elevating mechanism 42 possesses: the cloth pressing 421 that bottom surface is smooth； Support arm 422, it utilizes leading section to support cloth pressing 421；Erecting bed 424, it passes through Trunnion axis 423 can swingingly support support arm 422；Cloth pressing cylinder 425, it becomes Driving source for the lifting action of cloth pressing 421；And not shown crank, it is from this cloth Power is transferred to support arm 422 by material presser feet cylinder 425.

The side edge part of the off-position S side of cloth pressing 421, using by the circle as button hole The shape that head bore is cut in half is cut out.Therefore, by the cloth pressing elevating mechanism with right side The co-operating of the cloth pressing 421 of 42, it is possible to the periphery to the round end hole of cloth from top Press near portion.

Cloth pressing 421 via the trunnion axis along X-direction by the leading section of support arm 422 Supporting, the end before and after cloth pressing 421 the most vertically can swing.

Support arm 422 is supported by erecting bed 424 via the trunnion axis 423 along X-direction, The cloth pressing 421 supported by leading section is made to lift.It addition, from support arm 422 with Trunnion axis 423 compares the end of downside via aforesaid crank by cloth pressing cylinder 425 It is applied in rotational action, makes cloth pressing 421 lift in this, as driving source.

The switching mechanism 43 on right side possesses: pair of guide rails plate 431,431, they prop up at cloth The downside of board 41 can reciprocatingly be fed platform 51 along X-direction and support；Triangle The cloth open plate 432 of shape, it is fixedly connected in the upper table of pair of guide rails plate 431,431 Face；Stretching spring 433, it is by pair of guide rails plate 431,431 and cloth open plate 432 1 Drag to off-position S layback body；Lobe plate 434, it is at each guide-rail plate 431,431 Downside can reciprocatingly be fed platform 51 along Y direction and support；Roller bearing 435,435, They respectively cam part with two positions of lobe plate 434 abut；Adjustable plate 436,436, They can pivotally support each roller bearing 435,435 the most about the z axis；And drive link 437, locate can be fed platform 51 about the z axis rotationally therebetween and support.

Further, switching mechanism 43 possesses: the first opening and closing cylinder 438, it is to drive link 437 apply rotational action；And the second opening and closing cylinder 439, it makes drive link 437 make Move in the middle position of the slewing area applied by this first opening and closing cylinder 438.

Above-mentioned pair of guide rails plate 431,431 is all the flat board of the strip along X-direction, passes through Ladder screw is installed in feeding through be formed from its both ends along the elongated hole of X-direction Platform 51.By this installation constitution, each guide-rail plate 431,431 in the range of elongated hole along X-axis Direction can move back and forth.

It addition, the lower face side in centre position of the X-direction at each guide-rail plate 431,431, Via adjustable plate 436,436, roller bearing 435,435 is installed respectively.

Adjustable plate 436 utilizes and is formed at the not shown through hole of guide-rail plate 431, passes through spiral shell Clench solid and be fixed in feeding station 51.The internal diameter of the through hole of guide-rail plate 431 and screw External diameter is compared sufficiently large, if spiral shell goes out this screw, then and can be along X-Y plane at random to rolling Axle 435 carries out position adjustments.

Cloth open plate 432 is substantially equilateral triangle shape, cuts being partially toward on its base Under the state of disconnected S side, position, fastened by screw at the both ends of this base part and with The left part of each guide-rail plate 431,431 links.It addition, cloth open plate 432 is in bottom side portion The both ends divided possess two protruding upward boss portion 432a, 432a, make these Boss portion 432a and the chimeric state of through hole 411,411 being formed at cloth support plate 41 Under keep.

That is, pair of guide rails plate 431,431, cloth open plate 432 and cloth support plate 41 Carry out the contact separation shift action relative to off-position S with being integrally forming.

Lobe plate 434 is the flat board of the strip along Y direction, by ladder screw via shape Cheng Yuqi both ends be installed in feeding station 51 along the elongated hole of Y direction.By this peace Assembling structure, lobe plate 434 can move back and forth along Y direction in the range of elongated hole.

Further, the ora terminalis tossed about with off-position S-phase at the both ends of lobe plate 434 Portion is formed with cam part 434a, the 434a being made up of inclined plane.This cam part 434a, 434a Time viewed from above, to along with inclining in the direction of off-position S side the most close towards rear Tiltedly.

Therefore, make roller bearing 435,435 from relative to each cam part 434a, 434a and with Under the state that the opposition side of off-position S abuts, if making lobe plate 434 rearward move, Then can make cloth support plate 41 via each guide-rail plate 431,431 and cloth open plate 432 Move to the direction separated from off-position S.If it addition, making lobe plate 434 forwards Mobile, then cloth can be made to support via each guide-rail plate 431,431 and cloth open plate 432 Plate 41 moves to the direction close with off-position S.

Additionally, due to be linked with at cloth open plate 432 stretching spring 433 and to cut-out Direction close for position S, by tension force, makes roller bearing 435,435 convex with each therefore, it is possible to maintain The state that wheel portion 434a, 434a abut.

Drive link 437 is to be pacified via ladder screw when direction substantially along the x-axis It is loaded on the connecting rod of the strip of feeding station 51.Ladder screw is parallel with Z-direction, it is possible to rotate Ground supports the pars intermedia of the length direction of drive link 437.

Thus, the both ends of drive link 437 are along front and back swinging.And, the company of driving The end of the off-position S side of bar 437 is by the ladder screw, about the z axis along Z-direction Can link with the length direction pars intermedia of lobe plate 434 rotationally.Additionally, drive link The end of the off-position S side of 437 is via the elongated hole along X-direction, by ladder screw It is concatenated, thus without the swing hindering drive link 437.

It addition, near the end tossed about with off-position S-phase of drive link 437, warp Can be linked with the plunger of the first opening and closing cylinder 438 rotationally about the z axis by knuckle 440. It addition, the end tossed about with off-position S-phase of drive link 437, with and the first opening and closing Compare with the coupling position between cylinder 438 and further extend to a distant place, this extended end portion 437a Can abut with the plunger of the second opening and closing cylinder 439.

Additionally, near the end tossed about with off-position S-phase of drive link 437 also via Link along the elongated hole of X-axis side with knuckle 440, thus without hindering drive link 437 Swing.

First opening and closing cylinder 438 is positioned at the rear of drive link 437, entering with its plunger Move back the moving direction mode parallel with Y direction and be fixed on feeding station 51.

The first opening and closing cylinder 438 avoidance operation by plunger, it is possible to make drive link 437 Extended end portion 437a be rocked to position P1, by the protrusion action of plunger, it is possible to make driving Extended end portion 437a of connecting rod 437 is rocked to position P3.Additionally, the first opening and closing cylinder 438 The stroke of plunger can put more broadly compared with the scope of position P3 with from position P1 Dynamic, but limited by not shown retainer, so that the extension of drive link 437 End 437a is only swinging to the P3 of position from position P1.

And, if extended end portion 437a of drive link 437 moves to position P1, the most convex Wheel plate 434 advances, and cloth support plate 41 moves to immediate with off-position S " close Position ".

It is it addition, if extended end portion 437a of drive link 437 moves to position P3, the most convex Wheel plate 434 retreats, and cloth support plate 41 moves and divides furthest away " dividing to from off-position S Off normal and put ".

On the other hand, the second opening and closing cylinder 439 is positioned at the front of drive link 437, with The mode that the advance and retreat moving direction of its plunger is parallel with Y direction is fixed on feeding station 51.

Second opening and closing cylinder 439 is when plunger is kept out of the way, with drive link 437 Hunting range P1 of extended end portion 437a～P3 compare located anteriorly, reach extended end portion 437a.And, when plunger protrudes, it is possible to make the extended end portion of drive link 437 437a moves the position P2 to position P1 and position P3.

And, if extended end portion 437a of drive link 437 moves to position P2, the most convex Wheel plate 434 moves to centre, and cloth support plate 41 moves to being in aforesaid " approximated position " " centre position " between " separation point position ".

It addition, the second opening and closing cylinder 439 applies the moment of torsion to drive link 437, with One opening and closing cylinder 438 applies to compare sufficiently large to the moment of torsion of drive link 437, even if The plunger of one opening and closing cylinder 438 is in protruding state, extended end portion by drive link 437 Under the state that 437a forwards presses, if the plunger of the second opening and closing cylinder 439 is set to Protruding state, then also be able to extended end portion 437a of drive link 437 is pushed back to position P2.

Therefore, it is possible in such a way the position of cloth support plate 41 is switched over.

By the plunger of the first opening and closing cylinder 438 is set to backoff state, by the second opening and closing It is set to backoff state with the plunger of cylinder 439, thus cloth support plate 41 is set to " close Position ".

By the plunger of the first opening and closing cylinder 438 is set to protruding state, by the second opening and closing It is set to backoff state with the plunger of cylinder 439, thus is set to cloth support plate 41 " separate Position ".

By the plunger of the first opening and closing cylinder 438 is set to protruding state, by the second opening and closing It is set to protruding state with the plunger of cylinder 439, thus cloth support plate 41 is set to " middle Position ".

[thread cutter]

The thread cutter cut off of reaching the standard grade is possessed: movable cutting knife, it is arranged at looper pedestal 61；And cut-out cylinder 15 (reference Fig. 3) of reaching the standard grade, it makes movable cutting knife perform cut-out action, Thus carry out the cut-out reached the standard grade.

It addition, the thread cutter cut off that rolls off the production line is possessed movable cutting knife in the inside of feeding station 51 And fixed cutting tool, cut-out cylinder 16 (with reference to Fig. 3) of rolling off the production line makes movably to cut as driving source Cutter performs cut-out action.Thus roll off the production line and caught, between fixed cutting tool by movable cutting knife Co-operating and be cut off.

[control system of sewing machine]

Based on Fig. 3, the control system of buttonholing machine 1 is illustrated.Button hole The control device 70 of serging machine 1 possesses: sewing machine electromotor drive circuit 17a, its Drive sewing machine electromotor 17；I/F 17b, it is for by this drive circuit 17a and control dress Put the CPU 71 of 70 to connect；X-axis motor drive circuit 52a, it is used for driving cloth to enter The X-axis motor 52 possessed to mechanism 50；I/F 52b, it is for by this drive circuit 52a with CPU 71 is connected；Y-axis motor drive circuit 53a, it is used for driving cloth feeding The Y-axis motor 53 that mechanism 50 is possessed；I/F 53b, it is for by this drive circuit 53a It is connected with CPU 71；Slewing motor drive circuit 24a, it is used for driving slewing motor 24；I/F 24b, it is for being connected this drive circuit 24a with CPU 71；Cutting knife motor Drive circuit 33a, it is used for driving cutting knife motor 33；I/F 33b, it is for by this driving Circuit 33a with CPU 71 is connected；Encoder circuit 18a, it is to detection sewing machine electromotor The output pulse of the encoder 18 of the output shaft angle of 17 counts；And I/F 18b, its For this encoder circuit 18a with CPU 71 is connected.

Further, the control device 70 of buttonholing machine 1 possesses: solenoid-driven electricity Road 425a, it is used for driving electromagnetic valve 425c, and this electromagnetic valve 425c is for using to cloth pressing Cylinder 425 supplies air pressure；I/F 425b, it is for by this drive circuit 425a and CPU 71 connect；Driving circuit for electromagnetic valve 438a, it is used for driving electromagnetic valve 438c, this electromagnetic valve 438c is for supplying air pressure to the first opening and closing cylinder 438；I/F 438b, it is used for will This drive circuit 438a with CPU 71 is connected；Driving circuit for electromagnetic valve 439a, it is used for driving Moving electromagnetic valve 439c, this electromagnetic valve 439c are for supplying air to the second opening and closing cylinder 439 Pressure；I/F 439b, it is for being connected this drive circuit 439a with CPU 71；Electromagnetic valve Drive circuit 15a, it is used for driving electromagnetic valve 15c, and this electromagnetic valve 15c is for cutting to reaching the standard grade Cylinder 15 of dying supplies air pressure；I/F 15b, it is for by this drive circuit 15a and CPU 71 connect；Driving circuit for electromagnetic valve 16a, it is used for driving electromagnetic valve 16c, this electromagnetic valve 16c For supplying air pressure to the cut-out cylinder 16 that rolls off the production line；And I/F 16b, it is for driving this Galvanic electricity road 16a with CPU 71 is connected.

Additionally, buttonholing machine 1 actually possesses a cloth presser respectively in left and right Foot cylinder the 425, first opening and closing cylinder 438 and the second opening and closing cylinder 439, but at figure One of them is only illustrated in 3.

Above-mentioned cloth pressing cylinder the 425, first opening and closing cylinder the 438, second opening and closing gas Cylinder 439, reach the standard grade and cut off cylinder 15 and roll off the production line that to cut off cylinder 16 be all the cylinder of double-lift, logical Cross the air chamber across the both sides of piston to cylinder interior to be supplied respectively to air pressure and carry out The protrusion of plunger and the action kept out of the way.

It addition, above-mentioned cloth pressing cylinder the 425, first opening and closing cylinder 438, second open Close with cylinder 439, reach the standard grade cut off cylinder 15 and roll off the production line cut off cylinder 16 electromagnetic valve 425c, 438c, 439c, electromagnetic valve 15c and electromagnetic valve 16c are all 2 position 5 port single action solenoids Type (with reference to the electromagnetic valve 439c of Fig. 4).

Further, the control device 70 of buttonholing machine 1 possesses: guidance panel 75, It is used for inputting various setting；I/F 75i, it is for by this guidance panel 75 and CPU 71 Connect；Presser feet switch 76, it is used for making cloth pressing 54 decline；I/F 76b, it is used for will Presser feet switch 76 is connected with CPU 71；Activate switch 77, it makes sewing start；And I/F 77b, it is for being connected activate switch 77 with CPU 71.

Additionally, above-mentioned X-axis motor 52, Y-axis motor 53, slewing motor 24 are Pulse motor, possesses the origin sensor for carrying out initial point retrieval and for being connected to CPU The I/F of 71, but omit diagram.

It addition, control device 70 possess: ROM 72, its storage have various control program, The data used by program；RAM 73, it becomes for making CPU 71 based on from ROM 72 The data read, the data inputting or setting from guidance panel 75, seam as operation result Trace data processed, program and carry out the operating area processed；EEPROM 74, it stitches The storage of pattern data etc.；And CPU 71, it carries out various process based on program. Additionally, EEPROM 74 thus works as data store.

Tailoring pattern data are the pattern datas of the Buttonhole stitching for forming a weight, In EEPROM 74, storage has the tailoring pattern data of multiple kind.It addition, respectively sew figure Case data are in order to be individually identified and determine and have the most intrinsic pattern number.

Control device 70 based on the tailoring pattern data selected to suture needle reciprocating mechanism, Slew gear 20, cutter mechanism 30, presser foot device 40 and the actuating of cloth feeding mechanism 50 Device is controlled.

[guidance panel and tailoring pattern data]

Fig. 5 is the front view of guidance panel 75.Guidance panel 75 possesses: tailoring pattern number According to the display part 75a of number and carry out its increasing-and-decreasing key 75b selected, to each tailoring pattern number According to the setting value of various parameters carry out the display part 75c shown and the increase and decrease being set value Increasing-and-decreasing key 75d, the display part 75e that the bullets determining various parameter is shown and It is set the increasing-and-decreasing key 75f of the selection of the bullets of project, carries out the data of data setting Setting key 75g and conversion extremely can sew the preparation key 75h of state.

Setting of various parameters according to the tailoring pattern data being set input by this guidance panel 75 Definite value, calculates the various controlling values needed for the execution of sewing, generates sewing trace data.That is, Guidance panel 75 is the figure that the tailoring pattern data to round-nose button hole lock seaming sewing are set Case setup unit.

Below, based on the Fig. 6 tailoring pattern data to being set by aforesaid operations panel 75 each Plant setup parameter to illustrate.Fig. 6 represents the tailoring pattern data of round-nose button hole lock seaming sewing The content directory of various setup parameters.Fig. 7 shows schematically round-nose button hole lock seaming sewing The global shape of 100, and represent the size in each portion.

This round-nose button hole lock seaming sewing 100 possesses: round head 104, it has as revolution The arc sections 101 in portion and inwardly roll oblique relative to Y-direction from the end of arc sections 101 Pair of angled portion 102,103；Pair of parallel portion 105,106, they from pair of angled portion 102, 103 extend along Y-direction respectively；And round end casing-joining part (circular casing-joining part) 108, its phase Parallel portion 105,106 is positioned at and the opposition side of arc sections 101.

Additionally, in the following description the rake on right side is referred to as round end right lower quadrant 102, will The rake in left side is referred to as round end lower left quarter 103.It addition, it is flat that the parallel portion on right side is referred to as the right side Row portion 105, is referred to as left parallel portion 106 by the parallel portion in left side.Further, Fig. 8 represents becomes The concrete example in the round end hole 107 of the benchmark of round head 104 and each size in this round end hole.

It addition, round end casing-joining part 108 is an example, sometimes form tapered sleeve knot, straight line set Other nooses such as knot or itself do not carry out noose.

First, under carrying out as the tailoring pattern data of the Fig. 6 inputted from guidance panel 75 The setting in face.

(1) rounded shape: select the tack hole shown in Fig. 8 by numerical value " 0 "～" 5 " Or the shape in the different five kinds of round end holes 107 of size.

(2) hole lock seaming length: in the Y-direction of the hole lock seaming sewing that numerical value input is to be formed Total length ml.

(3) cloth cutter action: selected with or without performing to cut cloth by numerical value " 0 "～" 2 " Or which one carries out Qie Bu before and after forming Buttonhole stitching.

(4) parallel pin number: input right parallel portion 105+ round end right lower quadrant 102 by numerical value The pin number ln of (left parallel portion 106+ round end lower left quarter 103 is set to identical numerical value).

(5) tylostyle number: by the pin number en of numerical value input arc sections 101.

(6) parallel portion cutting knife interval: inputted in parallel portion 105,106 by numerical value The gap ls formed between needle downing position and the cloth cutter of side.

(7) round head cutting knife interval: input falling in the inner side of arc sections 101 by numerical value The gap es formed between pin position and cloth cutter.

(8) noose kind: selected with or without forming noose and set by numerical value " 0 "～" 3 " The kind of knot.

(9) tapered sleeve knot length: by the formation length of numerical value input tapered sleeve knot.

(15) round end noose pin number: pass through number in the case of selecting circular noose in (8) Value input this round end noose pin number cn.

(20) the pin amplitude of oscillation: input pin amplitude of oscillation ww by numerical value.

(21) double sewing pattern number: double sewing can be carried out, i.e. select two Individual tailoring pattern data, form the Buttonhole line of the first weight according to tailoring pattern data Mark, then according to another tailoring pattern data form the Buttonhole stitching of the second weight.

And, about whether carrying out this double sewing, it is set at the tailoring pattern of the first weight In data.That is, if setting " 0 " as double sewing pattern number, then it is set as Do not carry out double sewing, if the numerical value beyond input " 0 ", then by corresponding to this numerical value The tailoring pattern data of pattern number are as the Buttonhole stitching for forming the second weight Data utilize.

Additionally, in these tailoring pattern data by as when forming double Buttonhole stitching Second weight tailoring pattern data use in the case of, this parameter becomes invalid.

The cloth opening of (22) first weights: selected at this by numerical value " 0 "～" 2 " Tailoring pattern data are used in the case of forming a heavy Buttonhole stitching or conduct The feelings that the tailoring pattern data of the first weight when forming double Buttonhole stitching use The cloth opening carried out by presser foot device 40 under condition.

That is, " 0 " be set to the state that cloth is not switched on, i.e. by aforesaid presser foot device 40 The cloth support plate 41,41 of left and right is set to " approximated position ".

" 1 " is set to the full opening of state of cloth, i.e. by the cloth support plate 41 of left and right, 41 are set to " separation point position ".

" 2 " are set to cloth and open the state of half, i.e. by the cloth support plate 41 of left and right, 41 are set to " centre position ".

Additionally, in these tailoring pattern data by as when forming double Buttonhole stitching Second weight tailoring pattern data use in the case of, this parameter becomes invalid.

[molar behavior controlled in device of buttonholing machine]

Fig. 9 and Figure 10 is setting from the tailoring pattern data representing buttonholing machine 1 The flow chart of the process of the fixed globality inputted controlling to Buttonhole sewing, figure 11 is the flow chart that the setting about tailoring pattern data processes.

Based on above-mentioned accompanying drawing, the process to the globality of buttonholing machine 1 is said Bright.

First, CPU 71 determines whether to press the tailoring pattern data of guidance panel 75 Number increasing-and-decreasing key 75b (step S1), in the case of not pressing, such as, maintains initial It is worth (selecting pattern number 1) and this pattern number is shown in display part 75a, and make Process enters step S5.It addition, in the case of pressing number increasing-and-decreasing key 75b, corresponding In key+-and increase and decrease pattern number, pattern number is shown (step at display part 75a S3), and make process enter step S5.

In step s 5, CPU 71 determines whether to press data setting key 75g, is not having Process is made to enter step S9 in the case of pressing.It addition, pressing data setting key 75g In the case of, the setting starting aforesaid tailoring pattern data processes (step S7), is setting After fixed process, process is made to enter step S9.

Here, the setting about the tailoring pattern data of step S7 processes, and passes through Figure 11 Flow chart be described in detail.Additionally, here setting with the tailoring pattern data of Fig. 6 It is set to example to illustrate.

If pressing data setting key 75g, then first CPU 71 sets object as becoming Tailoring pattern data and automatically select " the round end hole shape " of bullets (1), and aobvious The portion 75e of showing shows " 1 " (step S61).And, the input carrying out increasing-and-decreasing key 75f is sentenced Fixed (step S63), without input, then makes process enter step S67, is carrying out In the case of input, the bullets becoming the tailoring pattern data setting object is changed (step S65), then makes process enter step S67.

In step S67, it is determined that about currently selected setup parameter, if by pressing Lower increasing-and-decreasing key 75d and have input set numerical value increase and decrease.Without input, then process is made to enter Enter step S71, in the case of having carried out input, carry out becoming the setup parameter setting object Set numerical value change.That is, about (1) round end hole shape, (2) hole lock seaming length, (3) cloth cutter action, (4) parallel pin number, (5) tylostyle number, (6) parallel portion Cutting knife interval, (7) round head cutting knife interval, (8) noose kind, (9) tapered sleeve knot length Degree, (15) round end noose pin number, (20) pin amplitude of oscillation, (21) double sewing figure Reference Number Parameter selected in code, (22) first heavy cloth openings, sets numerical value to it and carries out Change (step S69).

Then, in step S71, it is determined whether carried out the input of data setting key 75g. If the setting till above-mentioned each setup parameter (1)～(22) is fully completed, then press Lower data setting key 75g, after the renewal being set parameter (step S73), enters figure The process of step S9 of 9.

It addition, in the case of the setting till setup parameter (1)～(22) continues, Do not carry out the input of data setting key 75g, make process be back to step S63, about to carry out Whole setup parameters of change, repeat the process of step S63～S71.

If the setting of above-mentioned setup parameter has processed, then as shown in step S9 of Fig. 9, CPU 71 determines whether to press the preparation key 75h of guidance panel 75, in the feelings do not pressed Make to the processing returns to step S1 under condition, in the case of pressing preparation key 75h, perform sewing The generation of trace data processes (step S11).I.e., as illustrated as the former, according to tailoring pattern The setting content of data carries out data operation, generates sewing trace data.

Additionally, sewing trace data refers to, to for forming the setting with tailoring pattern data Aforesaid each portion actuator of the buttonholing machine 1 of the tailoring pattern that content is corresponding Actuating quantity carry out computing and the data obtained.

And, in order to start the sewing action of Buttonhole sewing, perform to pass through feeding station 51 (X-axis motor 52 and Y-axis motor 53), needle bar rotary table 13, looper base Each origin sensor that seat 61 (slewing motors 24), cutting knife motor 33 are carried out is carried out Initial point retrieval (step S13).

Thereafter, (the step if the presser feet switch 76 being arranged at buttonholing machine 1 is pressed Rapid S15), then CPU 71 makes cloth pressing 421,421 decline, and presses cloth (step S17)。

Additionally, in this moment, at the cloth support plate 41,41 of the left and right of presser foot device 40 In initial position, i.e. " approximated position ".

It follows that wait pressing of the activate switch 77 to be placed on buttonholing machine 1 (step S19), if pressing activate switch 77, then CPU 71 starts Buttonhole seam The action control of system.

First, whether CPU 71 cuts before judging to set in the tailoring pattern data selected The execution (step S21) of cutter, makes process enter step S25 in the case of not setting, In the case of setting, make cloth cutter 31 move up and down, cloth is carried out perforate (step Rapid S23).

Additionally, be in the case of the second of double sewing weighs in current tailoring pattern data, Tailoring pattern data according to the first weight judge whether to be complete perforate, in the feelings not completed Under condition, then perform perforate.

It follows that CPU 71 judges whether the Buttonhole being currently executing sewing is two The first weight (step S25) heavily sewed.Such as, this judgement can be according to the most entering The shoe of the setting value of (21) double sewing pattern data of the tailoring pattern data of the sewing of row Go through and judge.Or, it is also possible to when the sewing of the second weight performing double sewing, make mark Will is set up and can be judged according to this mark.

And, its result, is double sewing in the Buttonhole sewing being currently executing The second weight or heavily sew in the case of, only by the first opening and closing cylinder 438 of left and right, 438 protruding states being set to plunger, are set to the cloth support plate 41,41 of left and right " separate Position ".That is, cloth full open position (step S29) it is set to.

It addition, in step s 25, it is being judged to that the Buttonhole being currently executing stitches In the case of system is the first weight of double sewing, it is determined that (22) of current tailoring pattern data Whether the setting of the cloth opening of the first weight is cloth full open position (step S27).

And, its result, the setting in the cloth opening of (22) first weights is that cloth is complete In the case of full open mode, the cloth support plate 41,41 of left and right is set to " separation point position ", It is set to cloth full open position (step S29).

It addition, in step s 27, (22) first weights cloth openings setting not In the case of being cloth full open position, it is determined that (the 22) of current tailoring pattern data Whether the setting of the cloth opening of one weight is that half state (step S31) opened by cloth.

And, its result, the setting in the cloth opening of (22) first weights is that cloth is beaten In the case of opening half state, by the first opening and closing of left and right cylinder 438,438 and left and right Both second opening and closing cylinders 439,439 are set to the protruding state of plunger, by the cloth of left and right Support plate 41,41 is set to " centre position ".That is, it is set to cloth and opens half state (step Rapid S33).

It addition, in step S31, (22) first weights cloth openings setting not It is in the case of half state opened by cloth, it is determined that for (22) of current tailoring pattern data The setting of the cloth opening of the first weight is that cloth is not switched on, and the first opening and closing about maintaining is used Second opening and closing of cylinder 438,438 and the left and right backoff state of the plunger of cylinder 439,439 In the case of make process enter step S35.

In step s 35, CPU 71 controls X-axis, Y-axis motor 52,53, makes former The feeding station 51 of some position moves to sewing starting position.

And, CPU 71 drives sewing machine electromotor 17, starts Buttonhole sewing (step Rapid S37).CPU 71 reads " the X feeding set in sewing trace data for every pin Amount ", " the Y amount of feeding ", " revolution amount ", carry out for X-axis motor 52, Y-axis Motor 53, the control of slewing motor 24, such as, for round-nose button hole lock seaming sewing Each position of (or the lock seaming sewing of tack hole) sequentially forms stitching.

The seam sewed if based on the Buttonhole of whole pin numbers of above-mentioned sewing trace data Braked, then CPU 71 makes feeding station 51 (X-axis motor 52 and Y-axis motor 53) it is back to origin position (step S39), then makes to reach the standard grade and cut off cylinder 15 and roll off the production line Cut off cylinder 16 to work, carry out the cut-out (step S41) reached the standard grade and roll off the production line.

Then, the execution of cutting knife after whether CPU 71 judges to set in tailoring pattern data (step S43), jumps to step S47, in the feelings set in the case of not setting Under condition, make cloth cutter 31 move up and down, carry out perforate (step S45) to cloth.

Additionally, be in the case of the second of double sewing weighs in current tailoring pattern data, Whether the tailoring pattern data judging according to the first weight is complete perforate, in the feelings not completed Under condition, then perform perforate.

It follows that in step S47, read (the 21) two of current tailoring pattern data The heavily sewing setting of pattern number, it is determined whether set the tailoring pattern data of the second weight Pattern number, if set to 0, then make process enter step S49, if setting pattern Number, then make process be back to step S21, according to the tailoring pattern data of the second new weight, Carry out the process till step S21～S45, perform the Buttonhole stitching of the second weight Formation.

Additionally, the judgement of this step S47 is not to be double seam with current tailoring pattern data Premised on second weight of system, process is made to enter step S49 in the case of being the second weight.

In step S49, CPU 71 makes cloth pressing 421,421 rise, and releases cloth The pressing of material, makes feeding station 51, needle bar rotary table 13 and looper pedestal 61 (turn round electronic Machine 24) it is back to origin position, the cloth support plate 41,41 in left and right is in the feelings opened Both are set to " approximated position " (step S51) under condition, then make process be back to step S15.That is, till switching by lower foot clamp for sewing next time, holding state is become.

[technique effect of the embodiment of invention]

In above-mentioned buttonholing machine 1, meet in the tailoring pattern data read

(1) these tailoring pattern data are not the second heavy tailoring pattern data of double sewing

(2) cutting knife or the execution of rear cutting knife before setting in these tailoring pattern data, or These tailoring pattern data do not set the execution of cloth cutter and at the second heavy tailoring pattern Data set the execution of front cutting knife

(3) in these tailoring pattern data, register the tailoring pattern of the second weight of double sewing The pattern number of data

(4) the cloth opening of (22) first weights of these tailoring pattern data is that " cloth is not Open " or " half opened by cloth "

(1)～(4) condition in the case of, control device 70 for presser foot device 40 Perform opening variation to control, i.e. compared with during the Buttonhole stitching forming the first weight, The button realized by presser foot device 40 is increased when forming the Buttonhole stitching of the second weight The opening in hole (enters step S29 in the case of the judgement of step S25 of Figure 10 is NO Process be equivalent to " opening variation control ").

Control according to the variation of above-mentioned opening, by the knob heavier than increasing second with the first heavy phase The opening of button hole such that it is able to efficiently reduce following stitching defect, i.e. due to second During weight, the opening of button hole does not changes and the pin that falls to adjacent parallel interval that causes is caused By button hole closure etc..

It addition, be set to draw cloth by cloth pressing 421,421 when the sewing of the second weight The state dragged and can also effectively suppress to float.

It addition, when double sewing, in the tailoring pattern of the first weight, the reduction pin amplitude of oscillation, And parallel portion cutting knife interval is set to relatively big, increases the pin amplitude of oscillation and will when the second weight Parallel portion cutting knife interval be set to less, thus the first weight stitching is hidden in second weight stitching it Under, the aesthetic property of the double Buttonhole stitching after having made all the time improves.

In this case, by tailoring pattern data and the tailoring pattern of the second weight of the first weight The setting of (3) cloth cutter action of data, is set as forming the button hole lock of the first weight Formed by cutter mechanism 30 after edge stitch and before the Buttonhole stitching of formation the second weight Button hole.

In these cases, by performing the variation control of above-mentioned opening such that it is able to enter one Step opens the button hole formed before will forming the Buttonhole stitching of the second weight, it is possible to Reduce stitching defect, it is achieved better double sewing.

It addition, in buttonholing machine 1, will sew according to by guidance panel 75 The cloth opening of (22) first weights of pattern data is set as " cloth fully opens ", goes back Be set to " cloth is not switched on " or " cloth opens half ", substantially can be set with nothing The execution that opening variation controls.That is, in the case of setting " cloth fully opens ", Still carry out the formation of stitching during the sewing that second weighs with " cloth fully opens ", the most do not hold The variation of row opening controls, and is setting " cloth is not switched on " or the feelings of " half opened by cloth " Under condition, the sewing of the second weight carries out the formation of stitching with " cloth fully opens ", therefore Perform opening variation to control.

Therefore, it is possible to make guidance panel 75 work as " execution configuration part ", it is possible to appoint Meaning ground selects the execution that opening variation controls, therefore, it is possible to realize more rich sewing.

It addition, in buttonholing machine 1, EEPROM 74 is as storing multiple seams The data store of pattern data works.

Further, guidance panel 75 can be by (21) double sewing of Buttonhole stitching At random select the tailoring pattern data of the second weight with pattern number, the can be selected when sewing The tailoring pattern data of one weight, therefore guidance panel 75 is as from institute in EEPROM 74 Multiple tailoring pattern data of storage select the tailoring pattern data of the first weight and the second weight " data selecting section " works.

Thus, when carrying out double sewing, it is possible at random select each tailoring pattern data, It is capable of the sewing of more rich and the most double sewing.

It addition, buttonholing machine 1, owing to presser foot device 40 is used by the first opening and closing The combination of the action of cylinder 438 and the second opening and closing cylinder 439 the two cylinder and make button hole Relative to the size variation of the opening of cloth propagation direction, the most promptly switch to as mesh Target opening.

[other]

Additionally, in presser foot device 40, it is also possible to the second opening and closing cylinder 439 is removed, Only can regulate the big of the opening of cloth support plate 41 by the first opening and closing cylinder 438 Little.

Such as, as shown in figure 12, to the first opening and closing both sides of the piston of cylinder 438 The feed path of air chamber supply air is respectively provided with speed control 438d, 438e, will Quantity delivered constantization of the air of time per unit, any by the service time of control air Ground controls the stroke of plunger such that it is able to the size of the opening of regulation cloth support plate 41.

In such a situation it is preferred that the electromagnetic valve 438c of the first opening and closing cylinder 438 is set to 3 Position 5 port type, arranges in the air chamber of the both sides of piston and air is set to sealing state Switching position.Thereby, it is possible to the opening of cloth support plate 41 to be maintained the position after regulation Put.

By these structures, it is possible to reduce the usage quantity of cylinder, realize the manufacture of sewing machine The minimizing of cost, and for existing buttonholing machine, with little man-hour with become Originally it transform as and be able to carry out the buttonholing machine 1 that opening variation controls.

It addition, in presser foot device 40, it is possible to use more than or equal to three cylinders, energy Enough is many grades by the size adjustment of opening.In this case, for instance, it is possible to the second opening and closing The opening and closing gas after the 3rd and the 3rd is configured abreast, in the same direction with cylinder 439 The salient position of the plunger of the opening and closing cylinder after cylinder, and second and second is the most different, Any position between position P1 and position P3 makes the extended end portion of drive link 437 437a stops.It addition, the opening and closing after second and second with cylinder all to drive link 437 The moment of torsion applied, compared with the moment of torsion that the first opening and closing applies to drive link 437 with cylinder 438 Sufficiently large.

Thus, by the first opening and closing cylinder 438 is set to protruding state, by second and Any one of opening and closing cylinder after two is selectively set to protruding state such that it is able to make cloth Material support plate 41 moves to the multiple positions between " approximated position " to " separation point position ".

It addition, the actuator making drive link 437 rotate is not limited to cylinder, it is also possible to Use can carry out the motor of position control and make cloth support plate 41 at random move.

It addition, in the example of above-mentioned buttonholing machine 1, mainly to carrying out round end The situation of Buttonhole sewing is illustrated, but is carrying out the situation of tack hole lock seaming sewing Under be also effective.

Claims (6)

1. a buttonholing machine, it possesses:

Suture needle reciprocating mechanism, it carries out pin swing makes needle bar move up and down；

Looper mechanism, it possesses looper, wire grip and to this looper and wire grip The looper pedestal being supported；

Slew gear, it makes described looper pedestal and carries out the needle bar revolution of described pin swing；

Feed mechanism, it makes described sewn object move along the mounting surface of mounting sewn object；

Cutter mechanism, it forms button hole at described sewn object；

Presser foot device, it is by pressing described sewn object, while by described Sewn object extends such that it is able to move along the direction orthogonal with the length direction of described button hole Dynamic；And

Controlling device, it carries out formation button hole around the forming position of described button hole The Buttonhole sewing of lock seaming stitching controls,

This buttonholing machine is characterised by,

Described control device perform described Buttonhole sewing control in the case of,

Form described Buttonhole stitching around described button hole doublely, and Before forming the Buttonhole stitching of the second weight, form button hole by described cutter mechanism,

Performing opening variation for described presser foot device to control, the variation control of this opening is, Compared with during the Buttonhole stitching forming the first weight, at the button hole forming described second weight The opening of the described button hole realized by described presser foot device is increased during lock seaming stitching.

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

Described control device perform described Buttonhole sewing control in the case of,

It is controlled in the following manner for described cutter mechanism, i.e. forming described first After the Buttonhole stitching of weight and before forming the Buttonhole stitching of described second weight, logical Cross described cutter mechanism and form button hole.

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

Being also equipped with performing configuration part, this execution configuration part controls with or without the variation of described opening Execution be set,

Described control device,

The variation of described opening control be set as having execution in the case of, perform described Buttonhole sewing performs the variation of described opening and controls when controlling,

The variation of described opening control be set as without performing in the case of, perform described Buttonhole sewing control time, with formed described first weight Buttonhole stitching time and The mode control of constant opening is all maintained when forming the Buttonhole stitching of described second weight Make described presser foot device.

Buttonholing machine the most according to any one of claim 1 to 3, its It is characterised by,

It is also equipped with:

Data store, the tailoring pattern of its storage multiple formation described Buttonhole stitching Data；And

Data selecting section, it is from the plurality of tailoring pattern being stored in described data store In data, select to be formed tailoring pattern data and the shape of the Buttonhole stitching of described first weight Become the tailoring pattern data of the Buttonhole stitching of described second weight,

Described control device, in the case of performing the sewing control of described Buttonhole, is carried out Following control, i.e. based on two the tailoring pattern data selected by described data selecting section, Form double Buttonhole stitching.

Buttonholing machine the most according to any one of claim 1 to 4, its It is characterised by,

For described presser foot device, by making the action of multiple cylinder be combined, so that Institute when described button hole being extended along the direction orthogonal with the length direction of described button hole State the size variation of sewn object amount of movement.

Buttonholing machine the most according to any one of claim 1 to 4, its It is characterised by,

For described presser foot device, the quantity delivered of the air by supplying to cylinder, so that Institute when described button hole being extended along the direction orthogonal with the length direction of described button hole State the size variation of sewn object amount of movement.