CN1397672A

CN1397672A - Cloth slitting controller of sewing machine and cloth slitting device of sewing machine

Info

Publication number: CN1397672A
Application number: CN02141062A
Authority: CN
Inventors: 村井健二; 洼田次勇
Original assignee: Juki Corp
Current assignee: Juki Corp
Priority date: 2001-07-12
Filing date: 2002-07-12
Publication date: 2003-02-19
Anticipated expiration: 2022-07-12
Also published as: KR100900366B1; DE10231497A1; CZ20022416A3; KR20030007138A; DE10231497B4; JP2003088695A; CN100480454C; CZ304670B6; TWI238210B; JP3942469B2

Abstract

The present invention relates to a control device (50) of a sewing machine controls the driving of the cloth cutting knife on the basis of control data including data (ml-lc) concerning the length of a buttonhole and data (ml) concerning the length of the side stitch of the buttonhole, when cutting an object to be sewn by moving up and down a cloth cutting knife (61) having an eyelet buttonhole knife portion (61a) forming an eyelet portion (90) of an eyelet buttonhole (92) and a straight line knife portion (61b) forming a straight line portion (91). Therefore, by moving the straight line knife portion to the rear of the straight line portion, and sequentially cutting the sewn object, buttonholes different in the length of the straight line portion can be formed to the side stitch of the buttonhole without changing to a knife of the same shape as a buttonhole and a knife receptacle corresponding to the knife. The object of this invention is to provide a control device of a sewing machine capable of forming buttonholes of a variety of lengths without replacing a cloth cutting knife and a knife receptacle.

Description

The cloth-cutting apparatus of cutting cloth control device and Sewing machines of Sewing machines

Technical field

The present invention relates to a kind of cloth-cutting apparatus of cutting cloth control device and Sewing machines that is used for the Sewing machines of formation buttonhole on sewn object.

Background technology

Be widely known by the people as the sewing machine for binding buttonhole that carries out the Sewing machines of eyelet on every side of going up the buttonhole that forms at cloth (sewn object).Near close Sewing needles on this sewing machine for binding buttonhole, be provided with the cutting knife and the knife plate of face-off up and down.

In addition, buttonhole has by dripping the hole (line part) of a shape hole (circle eye) with linearity and links up a buttonhole (being also referred to as circle eye button hole) and a straight buttonhole that is formed by the hole (line part) of linearity of the band circle eye that forms.

Therefore, form the cutting knife that buttonhole is used, for example possess the drops blade that forms the circle eye and form the shape that the rectilinear edge of line part links up, possess the linearity blade that forms line part and form the cutting knife that straight buttonhole uses.Then, under the state that cloth is placed on the knife plate, drive cutting knife and descend, depress and contact cloth and knife plate, form buttonhole with this.

On such sewing machine for binding buttonhole, storing and a plurality ofly forming the pattern data of seam buttonhole size and shape and on guidance panel, pick out the bight that one of them is stipulated.

Figure 35 is the pattern data table in the past that carries out buttonhole, can store 9 kinds of pattern datas with 1～7 data project.

Data items 1 is data of setting the cutting knife shape of the round eye portion that forms circle eye button hole.Shown in Figure 36 (a), with the size of transverse width ew and longitudinal length el regulation circle eye E, and this ew and el combination, and shown in Figure 36 (b) in advance tabulation store.When forming the buttonhole of band circle eye, in data items 1, select numeral 1～5 one of them, when forming straight buttonhole, select numeral 0.

Data items 2～6th is about each the pin number of formation buttonhole and the data shown in Figure 36 (c) of length.Promptly, shown in the table of Figure 36 (d), data items 2 be lockhole length m l, data items 3 be the line part pin count ln, data items 4 be circle eye pin count en, data items 5 be the line part otch at interval ls, data items 6 are circle eye otch es at interval, data items 7 be select to cut before the eyelet cloth cut earlier or eyelet after cut cloth after the data of cutting.

But, when the difformity according to the kind of clothes or every kind of design requires to form difform buttonhole, must to change cutting knife and cutting plate basically.Therefore, even only when the line part length of change buttonhole, also essential cutting knife corresponding with it and the knife plate of using increased the trouble of changing these cutting knifes and cutting plate.

Simultaneously, sometimes make picture formation flower-arranging hole except buttonhole on the western-style clothes collar with sewing machine for binding buttonhole, forming on this flower-arranging hole does not have straight line portion and when having only round eye and under any occasion when forming straight buttonhole, for the length that changes buttonhole and kind must with above-mentioned cutting knife and the knife plate similarly changed.

Consider above-mentioned problem, the object of the present invention is to provide a kind of cloth-cutting apparatus of cutting cloth control device and Sewing machines of Sewing machines that rag knife and knife plate promptly can form the buttonhole of all lengths and kind of not changing.

Summary of the invention

For solving above-mentioned problem, as Fig. 1～shown in Figure 16,

The cloth of cutting of the present invention's 1 described Sewing machines is controlled device 50, cut cloth control device for the Sewing machines of the following stated, be set at around forming buttonhole and buttonhole on the sewn object and form on the Sewing machines 10 of buttonhole stitching at sewn object, and comprise the buttonhole 92 with band circle eye that formation is made of circle eye 90 and line part 91 above-mentioned round eye the circle eye cutting knife 61a of portion and forms the rag knife 61 of the straight line cutting knife 61b of portion of above-mentioned line part, with the cloth cut device 60 of the relative knife plate 62 that disposes to ground with this rag knife; When sewn object being cut off when above-mentioned rag knife is relatively moved up and down to above-mentioned knife plate, the buttonhole that on sewn object, forms band circle eye with above-mentioned circle eye cutting knife portion and above-mentioned straight line cutting knife two sides of portion can be controlled, and buttonhole 93 can be controlled on the sewn object with above-mentioned straight line cutting knife portion formation linearity; Also comprise and to store a plurality of storing mechanisms (RAM52, EEPROM53) that are used to form the control data of above-mentioned buttonhole and buttonhole stitching, it is characterized in that: in above-mentioned control data, comprise data ml-lc relevant and the data ml relevant, and control the driving of above-mentioned cloth cut device according to above-mentioned control data with the buttonhole stitch length with above-mentioned buttonhole length.

The cloth of cutting of 1 described Sewing machines according to the present invention is controlled device, can be according to the control data that comprises data relevant and data relevant with the length of buttonhole stitching with the length in buttonhole hole, control forms the buttonhole of round of band on sewn object with circle eye cutting knife portion and two sides of straight line cutting knife portion.Therefore, if make straight line cutting knife portion move, sewn object is cut off successively,, also can change the length of the line part of the buttonhole of being with the circle eye even then do not change cutting knife or knife plate to the rear of line part part.

In addition, according to the control data that comprises data relevant and data relevant, can control the buttonhole that only on sewn object, forms linearity with the straight line cutting knife with the length of buttonhole stitching with the length of buttonhole.Therefore, if make straight line cutting knife portion move, also cut off sewn object successively,, also can change the length of the buttonhole of linearity even then do not change cutting knife and knife plate to the rear of the buttonhole of linearity part.

In addition, use have the band circle eye that formation is made of circle eye and line part buttonhole above-mentioned round eye circle eye cutting knife portion and form the rag knife of the straight line cutting knife portion of above-mentioned line part, can be set at various values to data relevant and the data relevant respectively with the length of buttonhole stitching with the length of buttonhole.Therefore, for example form after the buttonhole stitching, to make starting point and sewing finishing point or prevent its off-line and form when connecting 2 door bolt line in order to strengthen, at this moment, for example when the line part of the buttonhole of being with the circle eye extends to the position of this two places clamping, because the existence of this line part, the part of sewn object (cut) pin that falls can not had, therefore it is bad to produce the door bolt sewer, at this moment, with the method for setting the data relevant with buttonhole length, the position that line part is not extended to make starting point and sewing finishing point clamping is to prevent above-mentioned poor stitching quality.

The cloth of cutting of the present invention's 2 described Sewing machiness is controlled device, the cloth of cutting that is 1 described Sewing machines according to the present invention is controlled device, it is characterized in that: in above-mentioned control data, comprise when on sewn object, forming the buttonhole of band circle eye, be used to change the data lc of above-mentioned line part length of the buttonhole of round of this band with above-mentioned circle eye cutting knife portion and above-mentioned straight line cutting knife two sides of portion.

The cloth of cutting of 2 described Sewing machiness according to the present invention is controlled device, in 1 effect same that obtains with the present invention, after forming the buttonhole of band circle eye with circle eye cutting knife portion and straight line cutting knife portion, if according to the data of the above-mentioned line part length of the buttonhole that is used for change tape circle eye, move straight line cutting knife portion, cut off sewn object successively to the rear of line part part, then can prolong the line part of the buttonhole of band circle eye according to the data that be used to change line part length, need not change cutting knife and knife plate and can form buttonhole corresponding to all size.

The cloth of cutting of the present invention's 3 described Sewing machiness is controlled device, the cloth of cutting that is 1 or 2 described Sewing machiness according to the present invention is controlled device, it is characterized in that: in above-mentioned control data, be included in when on sewn object, forming the buttonhole of linearity, be used for changing the data cc of formation position of buttonhole of this linearity and the data lc of length that changes the buttonhole of this linearity along the length direction of buttonhole stitching with above-mentioned straight line cutting knife portion.

The cloth of cutting of 3 described Sewing machiness according to the present invention is controlled device, in 1 or 2 effect same that obtain with the present invention, can set the data that are used for along the formation position of the buttonhole of the length direction of buttonhole stitching change linearity, so can be at the buttonhole that forms linearity with respect to the optional position of buttonhole stitching, in addition, owing to can set the data of the buttonhole length that is used to change linearity, so can change the length of the buttonhole of linearity arbitrarily, need not change cutting knife or knife plate and just can form buttonhole corresponding to all size.

The cloth of cutting of the present invention's 4 described Sewing machiness is controlled device, the cloth of cutting that is 1 described Sewing machines according to the present invention is controlled device, it is characterized in that: in above-mentioned control data, comprise a data ma relevant, the data mb relevant with the length of above-mentioned straight line cutting knife portion with the length of above-mentioned circle eye cutting knife portion and and above-mentioned circle eye cutting knife portion and above-mentioned straight line cutting knife portion between the relevant data mc of length.

The cloth of cutting of 4 described Sewing machiness according to the present invention is controlled device, in 1 effect same that obtains with the present invention, specify the shape of rag knife easily, and when forming the buttonhole of band circle eye with this rag knife, control device can calculate easily that circle eye cutting knife portion and straight line cutting knife portion do not cut off owe to cut part sewn object length and only use straight line cutting knife portion to cut full length, so can improve the operability of buttonhole formation operation.

The cloth of cutting of the present invention's 5 described Sewing machiness is controlled device, the cloth of cutting that is 1 described Sewing machines according to the present invention is controlled device, it is characterized in that: in above-mentioned control data, comprise that to be used to select be the buttonhole that forms band circle eye with above-mentioned circle eye cutting knife portion and the above-mentioned straight line cutting knife both sides of portion on sewn object, still on sewn object, form the selection data ss of the buttonhole of linearity with above-mentioned straight line cutting knife.

The cloth of cutting of 5 described Sewing machiness according to the present invention is controlled device, in 1 effect same that obtains with the present invention, can set that to be used to select be the buttonhole that forms band circle with circle eye cutting knife portion and the straight line cutting knife both sides of portion on sewn object, still only on sewn object, form the selection data of the buttonhole of linearity with straight line cutting knife portion, so can form the buttonhole of band circle eye or the buttonhole of linearity easily, for example, when forming the buttonhole of linearity, there is no need to change rag knife corresponding to the regulation of the buttonhole shape of this linearity.

The cloth of cutting of the present invention's 6 described Sewing machiness is controlled device, the cloth of cutting that is 1 described Sewing machines according to the present invention is controlled device, it is characterized in that: in above-mentioned control data, comprise the relevant data of either party lifting height in the middle of the above-mentioned rag knife that moves up and down when on sewn object, forming buttonhole or the above-mentioned knife plate (can sky send the cutting knife height).

The cloth of cutting of 6 described Sewing machiness according to the present invention is controlled device, in 1 effect same that obtains with the present invention, either party relevant data of lifting height in the middle of above-mentioned rag knife that moves up and down in the time of can setting with formation buttonhole on sewn object or the above-mentioned knife plate, if so be this data setting and the basic identical height of the thickness of sewn object, then the ascending amount of rag knife or knife plate is necessary Min., can shorten to form the required cycle of buttonhole.

The cloth of cutting of the present invention's 7 described Sewing machiness is controlled device, is that the cloth of cutting of 1 described Sewing machines according to the present invention is controlled device, it is characterized in that: comprise the change mechanism (guidance panel 59) that changes above-mentioned control data content.

The cloth of cutting of 7 described Sewing machiness according to the present invention is controlled device, in 1 effect same that obtains with the present invention, owing to comprise the change mechanism of change control data content, so can form buttonhole corresponding to all size with the method for change control data content.

In addition, for addressing the above problem, the present invention's 8 described inventions shown in Figure 18～24, are set at forming buttonhole on the sewn object and form on the Sewing machines 200 of buttonhole stitching around buttonhole simultaneously;

The cloth-cutting apparatus 201 of this Sewing machines comprises:

Possess the buttonhole 92 that has the band circle eye that formation is made up of circle eye 90 and line part 91 above-mentioned round eye circle eye cutting knife portion (circle eye cutting knife 101b) and forms the rag knife of the straight line cutting knife portion (straight line cutting knife 102b) of above-mentioned line part, with have relative up and down with above-mentioned rag knife to the ground configuration, with the round knife plate 160b of portion of above-mentioned round cutting knife portion closure and with the cloth cut device of the knife plate (plane knife plate 160 or ladder knife plate 167) of the straight line knife plate 160c of portion of above-mentioned straight line cutting knife portion closure; With

So that the mode of above-mentioned rag knife and above-mentioned knife plate clutch drives the rag knife driving mechanism (knife plate driving mechanism 170) of one side along the vertical direction;

Above-mentioned cloth cut device is when rag knife and knife plate closure sewn object to be cut off and the formation buttonhole, it is characterized in that:

The above-mentioned circle eye cutting knife portion of above-mentioned cutting knife and above-mentioned straight line cutting knife portion have at least one can be displaced into above-mentioned knife plate closed and can cut off the primary importance of sewn object and not with the second place of above-mentioned knife plate closure;

Comprise for one the primary importance and the second place in above-mentioned circle eye cutting knife portion that adopts and the above-mentioned straight line cutting knife portion, travel mechanism's (cylinder 110, spring 108) that it is moved between the primary importance and the second place.

8 described inventions according to the present invention, can make an above-mentioned at least circle eye cutting knife portion in the rag knife and a side of above-mentioned straight line cutting knife portion with travel mechanism, move to above-mentioned knife plate closed also can cut off the primary importance of sewn object and not with the second place of above-mentioned knife plate closure.Like this, can form diversified buttonhole.

For example, knife plate is formed the form of circle eye knife plate portion and straight line knife plate portion flattening, when only moving circle eye cutting knife portion with travel mechanism, circle eye cutting knife when primary importance, can form band circle eye buttonhole, when the second place, can form linearity buttonhole (straight buttonhole).In addition, when mobile straight line cutting knife portion only, straight line cutting knife portion can form the buttonhole of band circle eye when primary importance, can only form the circle eye when the second place, be used to out the eyelet of flower arrangement.If removable both sides can form three types of the buttonhole of band circle eye, straight buttonhole and circle eyes.Therefore, rag knife need not be changed and various buttonholes can be formed.

And then, as the present invention 17 as described in, can be if above-mentioned cloth cut device is set to respect to sewn object, along in the direction parallel relative moving mechanism (for example the feeding platform 14) movably with the line part of buttonhole of the above-mentioned band circle eye that forms on the sewn object, then except the present invention's 8 action effect, can also not change rag knife and on one side cloth cut device relatively be moved sewn object and it is cut full on one side and form the buttonhole of all lengths.

The present invention's 9 described inventions are cloth-cutting apparatus of 8 described Sewing machiness according to the present invention, as Figure 22, shown in Figure 23, it is characterized in that:

As knife plate is two sides' the structure that can be installed on the slightly same horizontal plane ladder knife plate 167 of the ladder that the plane knife plate 160 that forms circle eye knife plate portion and straight line knife plate portion and circle eye knife plate portion and straight line knife plate portion form on different level, and installs and uses wherein either party.

9 described inventions according to the present invention can the mounting plane knife plate and two kinds of knife plates of ladder knife plate.Therefore, increased the variation that to select.For example, even under the situation of removable circle eye cutting knife portion only,, then can only form round eye if use the ladder knife plate of ladder with the more close cutting knife side of circle eye knife plate one side of portion, its result is three types that can form buttonhole, the line part of band circle eye and have only the circle eye.In addition, even on the contrary under the situation of removable straight line cutting knife portion only,, also can form buttonhole, the straight buttonhole of band circle eye and have only three types of circle if use the ladder knife plate of ladder with the more close cutting knife side of one side of straight line knife plate portion.

If do not need to form single round eye, also can use the plane knife plate that more can form the buttonhole of band circle eye than ladder knife plate efficiently.

The present invention's 10 described inventions are cloth-cutting apparatus of 9 described Sewing machiness according to the present invention, as shown in figure 27,

Comprise storing a plurality of storing mechanisms (RAM52) that are used to form the control data of buttonhole and buttonhole stitching, it is characterized in that:

In above-mentioned control data, comprise the buttonhole that is used to select to form band circle eye with plane knife plate and rag knife, with be to form straight buttonhole with a straight line cutting knife portion only with rag knife with plane knife plate or ladder knife plate, with the buttonhole that forms band circle eye with ladder knife plate and rag knife with only form any one buttonhole kind selection data (data items 10) of round eye with ladder knife plate and a circle cutting knife portion;

And comprising the buttonhole of selecting data to select with above-mentioned buttonhole kind in order to form, time control in accordance with regulations drives the above-mentioned controlling organization (CPU45) of cutting cloth driving mechanism and above-mentioned travel mechanism.

10 described inventions according to the present invention, according to all kinds of selection data of buttonhole, utilization can the mounting plane knife plate and the both sides of ladder knife plate, select with the circle eye cutting knife portion of plane knife plate and rag knife and the buttonhole of straight line cutting knife portion formation band circle eye, form the buttonhole of linearity with plane knife plate or ladder knife plate one of them and single straight line cutting knife portion, circle eye cutting knife portion and straight line cutting knife portion with ladder knife plate and rag knife form the buttonhole of being with the circle eye, only form any selection of round eye with a ladder knife plate and a single circle cutting knife portion, under the control of controlling organization, cut the cloth driving mechanism and above-mentioned travel mechanism forms desirable buttonhole with above-mentioned.

In the cloth-cutting apparatus of the present invention's 8 described Sewing machiness, utilize moving of travel mechanism, concrete as described in the present invention's 11～13 the formation,

That is, 11 described the present invention of the present invention are cloth-cutting apparatus of 8 described Sewing machiness according to the present invention, it is characterized in that:

The circle eye is cut cloth portion and is fixed on circle eye cutting knife with on the pedestal 104, and with the rotation of circle eye cutting knife with pedestal, moves between above-mentioned primary importance and said second position.

In addition, the present invention's 12 described inventions are cloth-cutting apparatus of 8 described Sewing machiness according to the present invention, for example as Figure 31, shown in Figure 32, it is characterized in that:

Circle eye cutting knife portion (circle eye cutting knife 101b) is fixed on circle eye cutting knife with on the pedestal 304, slides with the linearity of circle eye cutting knife with pedestal, moves between above-mentioned primary importance and said second position.

The present invention's 13 described inventions are cloth-cutting apparatus of 8 described Sewing machiness according to the present invention, as shown in figure 34, it is characterized in that:

Circle eye cutting knife portion (circle eye cutting knife 501b) and straight line cutting knife portion (straight line cutting knife 502b) are fixed on the rag knife pedestal (rotating cutting knife pedestal 504) simultaneously, with the rotation of rag knife pedestal circle eye cutting knife portion and straight line cutting knife portion alternately are displaced between above-mentioned primary importance and the said second position mutually.

The present invention's 14 described inventions, it is the cloth-cutting apparatus of 8 described Sewing machiness according to the present invention, it is characterized in that: an above-mentioned circle cutting knife portion is fixed on circle eye cutting knife with on the pedestal 104, and along with a circle cutting knife moves to the primary importance and the second place with moving of pedestal

In the direction that does not hinder circle eye cutting knife portion to move, be formed with from circle eye cutting knife portion and circle eye cutting knife with the inboard of pedestal towards outside, be used to reclaim by circle eye cutting knife portion and circle eye knife plate is closed and cloth that circle eye shape cloth that produced when sewn object forms the circle eye is considered to be worth doing is considered path 10 1e, 104a to be worth doing

By the cloth bits that cloth bits passage drops out, be discharged to and be connected with aspirator 134 and not with in above-mentioned cloth is considered the pipe 133 that passway is connected to be worth doing.

Form the circle eye and just be bound to produce the cloth bits, be to reclaim in the past, but be displaced under the situation of the primary importance and the second place, with what kind of path reclaim and be actually very important in circle eye cutting knife portion with the regulation path that is connected circle eye cutting knife portion.

14 described inventions according to the present invention, the cloth bits path of the cloth bits that produce when forming the circle eye because of being used to be recovered in, be outwards to be provided with the inboard of pedestal from circle eye cutting knife portion and circle eye cutting knife, so can on the route of not interfering circle eye cutting knife portion to move, reclaim the cloth bits in the direction that does not hinder circle eye cutting knife portion to move.And, from the cloth bits that cloth bits path ejects, be discharged to and be connected with aspirator 134 and not with in above-mentioned cloth is considered the pipe 133 that the path is connected to be worth doing, reliably with its absorption.In addition, because cloth bits path is not connected with pipe, that is, the path of reclaiming the cloth bits is disconnected halfway, so be boundary with this gap, can consider path to be worth doing according to the cloth that the moving direction of circle eye cutting knife portion etc. only changes the cutting knife side, cloth is considered the design freedom height of path to be worth doing.

The cloth-cutting apparatus of the present invention's 15 described Sewing machiness as shown in figure 33, is set at and is forming buttonhole and forming on the Sewing machines of buttonhole suture mark at buttonhole on the sewn object on every side;

The cloth-cutting apparatus 400 of Sewing machines, comprise: the circle eye cutting knife portion 412 and the rag knife 411 that forms the straight line cutting knife portion 413 of above-mentioned line part that possess the above-mentioned round eye of the buttonhole 92 that has the band circle eye that formation is made up of circle eye 90 and line part 91, with have relative up and down with above-mentioned rag knife to ground configuration and with the circle eye knife plate portion (circle eye knife plate 401) of above-mentioned circle eye cutting knife portion closure and with the cloth cut device of the knife plate of the straight line knife plate portion (straight line knife plate 402) of above-mentioned straight line cutting knife portion closure and

What make that above-mentioned rag knife and above-mentioned knife plate close the motion of liftoff driving one direction above-below direction cuts the cloth driving mechanism;

Above-mentioned cloth cut device cuts off, forms buttonhole to sewn object when rag knife and knife plate closure; It is characterized in that,

At least one side of the above-mentioned circle eye knife plate portion of above-mentioned knife plate and above-mentioned straight line knife plate portion, be can be displaced into the primary importance of the cut off sewn object of above-mentioned rag knife closure and not with the second place of above-mentioned rag knife closure,

And comprise for one the primary importance and the second place in above-mentioned circle eye knife plate portion that adopts and the above-mentioned straight line knife plate portion, move it the travel mechanism's (cylinder 110, spring 108) between the primary importance and the second place.

15 described inventions according to the present invention, a knife plate of circle eye at least in the middle of knife plate and a side of straight line knife plate, can be moved mechanism move to rag knife closed and the primary importance of sewn object cut-out and not with the second place of rag knife closure.Therefore, can form multiple buttonhole.

For example, rag knife is that circle eye cutting knife portion and straight line cutting knife portion form the substantially flat formula, under the situation that only moves circle eye knife plate portion, when circle eye knife plate is primary importance, can form the buttonhole of band circle eye, when the second place, can form the buttonhole (straight buttonhole) of linearity.In addition, under the situation of mobile straight line knife plate portion only, the straight line knife plate can form the buttonhole of band circle eye, the eyelet that can form single round eye when the second place, is used to arrange flowers when primary importance.If two sides are removable, just can form three types of the buttonhole of band circle eye, straight buttonhole, single round eyes etc.Therefore, knife plate needn't be changed and various buttonholes can be formed.

And, as the present invention 17 as described in, if above-mentioned cloth cut device is designed to the relative moving mechanism (for example cloth pushing table 14) that can relatively move along the direction parallel with the line part of the buttonhole of the above-mentioned band circle eye that on sewn object, forms with respect to sewn object, even then do not change knife plate, also can move cloth cut device with respect to sewn object on one side, cut full length on one side, form the buttonhole of various length.

And, in the present invention's 17 invention, can mobile cloth cut device integral body with relative moving mechanism, also can mobile sewn object.

In 8 and the present invention's of the present invention 15 invention, rag knife and knife plate which side last can.

In the cloth-cutting apparatus of the present invention's 15 described Sewing machiness, with moving of travel mechanism, for example also can be shown in the present invention's 16 described inventions, circle eye knife plate portion is fixed on circle eye knife plate with on the pedestal 404, and removable between above-mentioned primary importance and said second position with circle eye knife plate with the rotation of pedestal.

Description of drawings

Fig. 1 is the side elevation in partial section of the Sewing machines structure of embodiment 1.

Fig. 2 is the broken section front view of the Sewing machines structure of embodiment 1.

Fig. 3 is the rearview of the Sewing machines structure of embodiment 1.

Fig. 4 is the vertical view of the Sewing machines structure of embodiment 1.

Fig. 5 (a) is the side view of rag knife and knife plate structure, (b) is front view.

Fig. 6 is that the cloth of cutting of Sewing machines is controlled the device calcspar.

Fig. 7 is the pattern data table.

Fig. 8 (a) and (b) be schematic diagram data corresponding to cutting knife sequence number No..

Fig. 9 (a) is the schematic diagram that forms the buttonhole buttonhole stitching shape of band circle eye, (b) is the data directory schematic diagram and (c) is the schematic diagram that forms straight buttonhole buttonhole stitching shape.

Figure 10 is a storage translation data schematic diagram.

Figure 11 is the guidance panel schematic diagram.

Figure 12 is the operation process chart that forms the buttonhole stitching.

Figure 13 is storage conversion setting process figure.

Figure 14 is the data setting flow chart.

Figure 15 is the rag knife action flow chart.

Figure 16 is the computational methods schematic diagram of roll setting position.

Figure 17 (a) is the stereogram of rag knife structure, (b) is the stereogram of knife plate structure.

Figure 18 is the side elevation in partial section of the Sewing machines primary structure of embodiment 2.

Figure 19 is the broken section front view of the Sewing machines primary structure of embodiment 2.

Figure 20 is a vertical view of being located at the cutter assembly on the Sewing machines of Figure 18.

Figure 21 is the side view of the cutter assembly of Figure 20 and connected aspirator and is partial sectional view.

Figure 22 is the side view of cloth-cutting apparatus action with cutter assembly of Figure 20, (a) is the state that the circle eye erects with the cutting knife member, (b) is the state that a circle cutting knife falls down.

Figure 23 be have Figure 20 cutter assembly, with ladder knife plate cloth-cutting apparatus action side view as knife plate, be that state, (b) that the circle eye erects with the cutting knife member are the states that circle falls down with the cutting knife member (a).

Figure 24 is when the action of Figure 22, forms the order key diagram of the buttonhole shape of band circle eye.

Figure 25 is when the action of Figure 22 or Figure 23, forms the order key diagram of straight buttonhole shape.

Figure 26 is when the action of Figure 23, forms the order key diagram of the buttonhole shape of band circle eye.

Figure 27 is the calcspar of cutting cloth control device of the Sewing machines of Figure 18.

Figure 28 cuts the cloth action flow chart.

Figure 29 is the key diagram of knife plate whereabouts position calculating method.

Figure 30 is 4 kinds of ideographs of cutting the cloth pattern of cloth-cutting apparatus of the Sewing machines of Figure 18.

Figure 31 is as the cutter assembly schematic diagram of the variation 1 of embodiment 2, (a) is vertical view, (b) is side view.

Figure 32 is the cloth-cutting apparatus action side view with Figure 31 cutter assembly, is the circle eye advancing state of cutting knife member (a), (b) is the state that straight line is made a concession with the cutting knife member.

Figure 33 is the cloth-cutting apparatus schematic diagram as the variation 2 of embodiment 2, (a) is the state that knife plate erects, and (b) is the state that knife plate falls down to make a concession.

Figure 34 is as the cutter assembly schematic diagram of the variation 3 of embodiment 2, (a) is vertical view, (b) is side view.

Figure 35 is a graph data table in the past.

Figure 36 (a)～(d) is the schematic diagram corresponding to cutting knife sequence number (No.) data.

Among the figure: 10-Sewing machines, the cloth of cutting of 50-Sewing machines is controlled device, 52-storing mechanism (RAM), 53-storing mechanism (EEPROM), 59-change mechanism's (guidance panel), 60-cloth cut device, 61,411-rag knife, 61a, 412-circle eye cutting knife portion, 61b, 413-straight line cutting knife portion, 62-knife plate, 90-circle eye, 91-line part, the buttonhole of 92-band circle eye, the buttonhole of 93-linearity, 14-cloth pushing table (relative moving mechanism), 100,300,500-cutter assembly, 101,501-circle eye cutting knife member, 101b, 501b-circle eye cutting knife, 101e, 104a, 304a, 501a, 504d-cloth bits path, 102,502-straight line cutting knife member, 102b, 502b-straight line cutting knife, 103---cutting knife base component, 104,304-circle eye cutting knife pedestal, 107-fulcrum shaft, 108---spring (travel mechanism), 110-cylinder (travel mechanism), 114---cylinder bearing pin, 116-connecting rod, 122-cloth bits protective cover, 134-aspirator, 160-plane knife plate, 167-ladder knife plate, 170-knife plate driving mechanism (cutting the cloth driving mechanism), 180-control device, 200-Sewing machines, 201,400-cloth-cutting apparatus, 303,503-cutting knife base component, 401-circle eye knife plate, 402-straight line knife plate, 403-knife plate pedestal, 404-circle eye knife plate pedestal, 410-cutting knife erecting bed, 416-cloth bits sliding channel, 420-knife plate assembly, 504-rotation cutting knife pedestal, 504b-first triangular cam, 504c-second triangular cam, 517a-translating cam.

The specific embodiment

Embodiments of the invention below are described with reference to the accompanying drawings.

(embodiment 1)

Below describe the situation that cloth control device is applied to sewing machine for binding buttonhole (hereinafter referred to as " Sewing machines ") of cutting of Sewing machines in detail.

Fig. 1～Sewing machines 10 shown in Figure 4 is to be controlled at automatically when forming buttonhole, to impose the Sewing machines of zigzag chain stitch around this buttonhole.Above-mentioned buttonhole, the straight buttonhole 94 of round eyelet 92 that forms just like the buttonhole (line part 91) shown in Fig. 9 (a) (following also can be described as " being with round buttonhole ") and the buttonhole that only forms linearity 93 shown in Fig. 9 (c) by linking drops hole (circle eye 90) and linearity.And shown in Figure 1 is the state that rag knife 61 is descended on knife plate 62, and Fig. 2 and Fig. 3 are the holding states that rag knife 61 is positioned at origin position.

Sewing machines 10, by sewn object carry workbench 11 above it, from this workbench 11 upward erectility column portion 12, the chain-drive section 13 that stretches out at its length direction of workbench 11 upper edges from this column portion 12, make cloth pushing table 14 that sewn object moves in horizontal plane, cloth be pressed in presser feet 16 cloth pushing table 14 above, control device 50 (with reference to Fig. 6), the cloth cut device 60 (with reference to Fig. 5) that is used to form buttonhole that control Sewing machines 10 moves, rag knife driving mechanism (knife drive mechanism) 20 that cloth cut device 60 moves up and down etc. roughly constituted.Also have the control according to above-mentioned knife drive mechanism 20 simultaneously, under the state that cloth is carried on the knife plate 62, decline rag knife 61 is also pushed cloth and the structure of knife plate 62 formation buttonholes.

At first, with reference to Fig. 5 cloth cut device 60 is described.

Shown in Fig. 5 (a), cloth cut device 60 has the knife plate 62 relative with it of rag knife 61 and the lower side that is arranged on this rag knife 61.And, rag knife 61 shown in Figure 5 is not cutting knifes repeatedly of the what is called on sustained height of the straight line cutting knife 61b of portion that forms the circle eye cutting knife 61a of portion of circle eye 90 and form line part 91, but that uses on the Sewing machines shown in the present embodiment is not only this repeatedly cutting knife, and the part of also using the part of having omitted illustrated formation circle eye 90 and forming line part 91 is the so-called standard cutting knife on sustained height or be used to form the cutting knife that only possesses the linearity blade of straight buttonhole 94 basically.

As mentioned above, rag knife 61 is made of circle eye cutting knife 61a of portion and the straight line cutting knife 61b of portion, and with screw 61c the straight line cutting knife 61b of portion is fixed on the circle eye cutting knife 61a of portion.

The straight line cutting knife 61b of portion promptly, protrudes to knife plate 62 directions that are provided with to ground relatively from the round eye cutting knife 61a of portion to the lower side, and blade part is the heeling condition that an end of the circle eye cutting knife 61a of portion side more protrudes than the other end.

Knife plate 62 is provided with the insertable slot part 62a of the straight line cutting knife 61b of portion in the side in the face of the straight line cutting knife 61b of portion, and (with reference to Fig. 5 b), a side of facing the circle eye cutting knife 61a of portion has the planar portions 62b that contacts with the circle eye cutting knife 61a of portion.That is, contact with planar portions 62b in order to make the circle eye cutting knife 61a of portion, the degree of depth of slot part 62a is darker to the length of the front end of the circle eye cutting knife 61a of portion blade part than the front end from the straight line cutting knife 61b of portion blade part.

Simultaneously, be provided with spacer portion 61d between straight line cutting knife 61b of portion and the circle eye cutting knife 61a of portion, with this, producing between the line part 91 of the buttonhole of band circle eye and circle eye 90 does not have cut part (hereinafter referred to as " owing to cut part ").

Then, when the rag knife 61 that possesses structure like this is descended, to cutting knife only be stopped at cut off the off-position (hereinafter referred to as " line part off-position ") of cloth and two positions that cut off the off-position (hereinafter referred to as " circle eye off-position ") of cloth with straight line cutting knife 61b of portion and the circle eye cutting knife 61a both sides of portion in the driving of knife drive mechanism 20 described later by control device 50 controls with the straight line cutting knife 61b of portion.

And, the length of the straight line cutting knife 61b of portion be made as or equal to form the shortest line part 91 of buttonhole 92 of band circle eye or shorter than it.The circle eye cutting knife 61a of portion can possess the shape of the water droplet that only cuts off the circle eye in addition, or the shape of some straight line portioies is arranged downwards a little from the end portion of circle eye.

In addition, as mentioned above, the straight line cutting knife 61b of portion is fixed on the circle eye cutting knife 61a of portion with screw 61c, so can on circle eye cutting knife 61a, load and unload the straight line cutting knife 61b of portion, when the buttonhole 92 of the band circle eye of the different shape of the length that forms line part 91 just, as described later, straight line cutting knife 61b is repeatedly descended on cloth and prolong line part 91, can change the straight line cutting knife 61b of portion and carry out.

Below, the knife drive mechanism 20 that is used to drive rag knife 61 is described.As Fig. 1～shown in Figure 4, knife drive mechanism 20 is made of cut cloth motor 21, ball-screw 24, connecting rod handle 31, driving shaft 35, driven wheel 39 and the straight moving axis 40 of pulse motor.

The cloth motor 21 of cutting of electric driver mechanism is fixed on the workbench 11, and the driving cutter of cutting cloth motor 21 passes to ball screw gear 23 with its engagement by motor gear 22.This ball screw gear 23 is installed in to be located on the ball screw 24 that can rotate flexibly with respect to the vertical direction of Sewing machines 10.Therefore, the driving force of cutting cloth motor 21 rotates ball screw 24 by ball screw gear 23.

Be located at the ball screw nut 27 on this ball screw 24, move up and down along ball screw 24 by the rotation of ball screw 24.Fixing support 28 on the top of ball screw nut 27 and moving up and down with ball screw nut 27.

Be provided with two connecting rod handles 31, clamping the two sides (having only among Fig. 3) of support 28 and respectively the one end is installed in rotation on the two sides of support 28, and the other end is rotatably mounted to by pitman shaft 32b and forms on pair end of forked lever 34.

As shown in Figure 4, can be bearing in driving shaft 35 rotatably flexibly on the sewing machine frame 15 and substantially parallel with it.The other end of lever 34 can be installed flexibly rotationally at an end of driving shaft 35.Then, by connecting rod handle 31 activation lever 34, when one distolateral (connecting rod handle 31 sides) are the rotation of fulcrum decline ground with driving shaft 35, driving shaft 35 is rotated by lever 34.

In addition, fixing driven wheel 39 at the other end of driving shaft 35.This driven wheel 39 moves up and down straight moving axis 40 when driving shaft 35 rotates with nibbling at the formed tooth bar 41 in top of straight moving axis 40 to be incorporated in as shown in Figure 2.

Straight moving axis 40 is contained in by driven wheel 39 sides to be had in slightly being of the otch straight driving box bearing 42 cylindraceous, inner face at this straight driving box bearing 42 is provided with the length of Liang Chu and straight driving box bearing 42 to the slot part 43 that extends in parallel, and be located at the protuberance 44 at straight moving axis 40 outside circumferencial directions 2 places, can along slot part 43 move freely ground chimeric, it is not slided up and down to left-right rotation.

In addition, be provided with cutting knife mount pad 63, on this cutting knife mount pad 63, adorning rag knife 61 in the lower end of straight moving axis 40.And be located at rag knife 61 under workbench 11 on knife plate pedestal 64 on knife plate 62 is housed.

The following describes the action of knife drive mechanism 20.

When cutting 21 rotations of cloth motor, rotate by motor gear 22 and ball screw gear 23 ball screws 24, ball screw nut 27 and support 28 descend on ball screw 24.Therefore, be connected that two connecting rod handles 31 on the support 28 also descend and press an end of lever 34 to the clockwise direction of Fig. 3.And lever 34 rotates the clockwise direction of driving shaft 35 in Fig. 3.

Driving shaft 35 1 rotates, the counter clockwise direction of driven wheel 39 in Fig. 2 that then is located on the driving shaft 35 rotated, the straight moving axis 40 that has with the tooth bar 41 of driven wheel 39 engagement is descended, drop to above-mentioned line part off-position or circle eye off-position and be breaking at the thing that is sewed on the knife plate 62 from lifting position with this rag knife 61.

After the cut-out, make and cut cloth motor 21 counter-rotating and lever 34 is rotated by ball screw nut 27 and support 28 moving upward, driving shaft 35 rotates to the counter clockwise direction of Fig. 3, because driven wheel 39 rotates to the clockwise direction of Fig. 2, so straight moving axis 40 rises, rag knife 61 leaves from sewn object.

The cloth of cutting that the following describes Sewing machines is controlled device 50.

As shown in Figure 6, control device 50 is made of drive circuits such as ROM51, RAM52, EEPROM53, CPU54, interface 55, spindle motor drive circuit 56a etc., and the various motors of this control device 50 and spindle motor 70 grades, starting switch 57, press button 58, guidance panel 59 (with reference to Figure 11) etc. are connected.

Necessary control program and control data when in ROM51, having write formation buttonhole and buttonhole.

RAM52 (storing mechanism) also stores data of selecting by guidance panel 59 from these data when storing a plurality of pattern datas.In addition, under the situation that has changed the pattern data value, also store after changing value.Variation about the system of selection of these data and data content will be in aftermentioned.And RAM52 temporary transient internal memory function of using when having various handle in making.Also store the stitching data that generate by pattern data and will be in the roll setting position of repeatedly cutting knife described later etc. simultaneously.

EEPROM53 (storing mechanism) is storing a plurality of storage translation data.In addition, when having changed the storage transition data value, also store value after changing.

As shown in Figure 7, above-mentioned pattern data for example is 9 pattern data data, and in each pattern data, shown in pattern data 1, the data items corresponding to 1～10 is provided with concrete numerical value.

Data items 1 is a project of setting the cutting knife kind that forms buttonhole.Shown in Fig. 8 (a), the shape of the circle eye cutting knife 61a of portion is defined as the long el of wide ew, is the length legislations of rag knife 61 integral body ma, is the length legislations of the straight line cutting knife 61b of portion mb, is the length legislations of the spacer portion 61d between circle eye cutting knife 61a of portion and the straight line cutting knife 61b of portion mc, shown in Fig. 8 (b), their combination and give make earlier tables of data be stored in the storage translation data in.

In data items 1, in cutting knife sequence number No.0～5, set so-called standard cutting knife, promptly, straight line cutting knife portion and circle eye cutting knife portion are the not shown cutting knife of one, in cutting knife sequence number No.6～10, set so-called repeatedly cutting knife, that is, between straight line cutting knife 61b of portion and the circle eye cutting knife 61a of portion, be provided with spacer portion 61d, as described later, owe to cut the cutting knife that partly must repeatedly drop on the cloth in order to cut off.Simultaneously, cutting knife sequence number No.0, pairing is the cutting knife that only possesses line shape blade that is used to form straight buttonhole 94.

Data items 2～6th is about the pin number of each one of constituting the buttonhole stitching shown in Fig. 9 (a) and the data of length.That is, shown in Fig. 9 (b), data items 2 is that keyhole length m l, data items 3 are that the line part pin is counted ln, data items 4 is that circle eye pin is counted en, data items 5 is line part otch ls at interval, and data items 6 is circle eye otch es at interval.

Data items 7 be selected at cut before the eyelet cloth cut earlier still cut behind the eyelet cloth after cut the project of usefulness.

Data items 8 is the sheared length correction lc that are used for changing the length of (correction) line part 91, data items 9 is when the straight buttonhole that forms shown in Fig. 9 (c), be used for the straight buttonhole amount of bias cc of the formation position of the buttonhole 93 of linearity from the biasing of the upper section of straight bight stitching, data items 10 is that the straight buttonhole when selecting that the rag knife 61 with the circle eye cutting knife 61a of portion and straight line cutting knife 61b of portion dropped to above-mentioned line part 91 off-positions and forming straight buttonhole 94 on cloth is selected ss.

And, ml is corresponding to the data of relevant buttonhole stitch length, lc is corresponding to the data of the length of the line part 91 of the buttonhole 92 that is used for change tape circle eye and be used to change the length data of buttonhole 93 of the linearity of straight buttonhole 94, ml-lc is corresponding to relevant buttonhole length data, cc is to being applied to along the data of the formation position of the buttonhole 93 of the length direction of buttonhole stitching change linearity, ma is corresponding to the data of the length of the relevant circle eye cutting knife 61a of portion, mb is corresponding to the data of the length of the relevant straight line cutting knife 61b of portion, mc is corresponding to the data about length between circle eye cutting knife 61a of portion and the straight line cutting knife 61b of portion, and ss selects to be to use circle eye cutting knife 61a of portion and the straight line cutting knife 61b of portion two sides to form the buttonhole 92 of band circle eye on sewn object corresponding to being used to, still only on sewn object, form the selection data of the buttonhole 93 of linearity with straight line cutting knife 61b.

Above-mentioned storage translation data, as shown in figure 10, for example storage conversion sequence number is set to No.1～36, and in each storage conversion, the item of recording and narrating corresponding to " storage converted contents " hurdle is shown in " setting value " hurdle and set its value.For example, the setting value of the wide ew of circle eye of cutting knife sequence number No.1 has been input as 2.1mm among the storage conversion sequence number No.1, and the setting value of the whole cutting knife length m a of cutting knife sequence number No.6 is input as 18mm among the storage conversion sequence number No.13.

CPU54 controls a series of processing of relevant buttonhole according to the control program of ROM51 and control data.

CPU54 is connected with guidance panel 59 by interface 55, and when the demonstration on the guidance panel 59 is controlled, the signal imported by guidance panel 59 of acceptance and the selection change of carrying out various settings etc.The operator can select each data shown in Fig. 7 and Figure 10 etc. by guidance panel 59, also can change the data of having selected.

And CPU54 is connected with spindle motor drive circuit 56a by interface 55, and the rotation of control spindle motor 70.Spindle motor 70 is drive that Sewing needles moves up and down go up axle and form the motor of the rotary shuttle mechanism of stitching with the eedle coordinated movement of various economic factors.

In addition, CPU54 is connected with X-axis motor-drive circuit 56b by interface 55, be connected with y-axis motor drive circuit 56c by interface 55 simultaneously, and one side drive controlling X-axis motor 71 and y-axis motor 72, to prescribed direction drive cloth pushing table 14 on one side.

In addition, CPU54 is connected with electric rotating machine drive circuit 56d by interface 55, and control drives rotary electric machine 73.With this rotary electric machine 73 eedle and rotating shuttle are rotated, around buttonhole 92 grades of being with the circle eye, form radial stitching.

In addition, CPU54 is connected with rag knife motor-drive circuit 56e by interface 55 and controls driving rag knife motor 74.

In addition, CPU54 is connected with starting switch 57 by interface 55, when when starting switch 57 is imported enabling signals, in official hour driving main shaft 70 etc., carries out buttonhole and cuts the cloth processing.

In addition, CPU54 is connected with presser feet switch 58 by interface 55, when from presser feet switch 58 input enabling signals, drives the presser feet air cylinder driven electromagnetic valve 75a that is connected on the presser feet cylinder 75 at official hour, and presser feet 16 is moved up and down.

In addition, CPU54 is connected with the X-axis origin sensor 71a that is used to detect X-axis motor 71, y-axis motor 72, rotary electric machine 73, rag knife motor 74 home positions, Y-axis origin sensor 72a, rotation origin sensor 73a, rag knife origin sensor 74a by interface 55, whether turn back to the signal of origin position corresponding to each motor that shows, carry out various controls according to this signal.

As the guidance panel 59 that changes mechanism of the present invention, as shown in figure 11, by pattern sequence number No. display part 59a, pattern sequence number No.+/-key 59b, data items display part 59c, data items+/-key 59d, data display part 59e, data+/-key 59f, data setting key 59g, prepare key 59h and constitute.

Pattern sequence number No. display part 59a is the display part (being " 1 " among Figure 11) that shows the pattern sequence number No. of current selection, with pattern sequence number No.+/-key 59b can change numeral singly in 1～9 scope and select different pattern datas.

Data items display part 59c, be the display part (being " 2 " among Figure 11) that shows the data items in the pattern data of selecting with pattern sequence number No. display part 59a, with data items+/-key 59d is numeral change singly in 1～10 scope, in order to select different data items.

In data items display part 59c, in case selected data items, then can on data display part 59e, show the numeral that has preestablished according to this data items.Then, with data+/-key 59f the numeral of data display part 59e the regulation scope in the regulation the interval increase and decrease successively, to change its value.

Data setting key 59g is the console switch when carrying out the data setting operation.That is, can change data value with pressing data setting key 59g.In addition, the selection and the change of projects and numeral are if can obtain confirming by data setting key 59g once more.

Prepare key 59h and be the preparation that makes the buttonhole operation become possible in, be used for after setting operation finishes, making the key of stitching data corresponding to the data value of reselecting or setting.In addition, preparing key 59h is the key that is used to change the storage translation data when inserting power supply under the double as situation about pressing.

Below, form the flow process of buttonhole stitching operation with reference to the flowchart text of Figure 12.

At first, when connecting the main power source (not shown) of Sewing machines, under the situation that preparation key 59h also connects simultaneously, promptly step S100 is under the situation of "Yes", enters step 101, carries out the setting of changing in storage described later.

In addition, when in step S100, being "No", or after the setting of the storage translation data among the step S101, enter step S102.

In step S102, monitor pattern sequence number No.+/-whether key 59b be operated, and when being switched on, promptly under the situation of "Yes", enters step S103, carries out the renewal of pattern sequence number No..

When in step S102, being "No", or after the pattern sequence number No. in step S103 is updated, enter step S104.

Whether the monitoring data configuration switch is operated in step S104, under situation about being switched on, promptly under the situation of "Yes", carries out data setting described later in step S105.

When step S104 is "No", or behind the data setting of step S105, enter step S106.

In step S106, monitor the operation of preparing key 59h.When do not operate, when being "No", return step S102, when the operation out-of-date, when being "Yes", then in step S107, these data are exactly according to the content of pattern data of having set and storage translation data, generate the data that are used for drive sources such as drives spindle motor 70, comprise every needlework mark data, the data etc. of the drive amount of cutting cloth motor 21 of the data of roll setting number of times, relevant cloth pushing table 14 positions of cutting knife and driving cutting knife repeatedly.

Then, decline presser feet 16 in step S108, and on cloth presser is on cloth pushing table 14, in step S109, carries out Y/X motor 71,72, rotary electric machine 73, rag knife motor 74 are moved to the initial point of origin position and search, presser feet 16 lifts in step S110.

In step S111, monitor the operation of presser feet switch 58, when for connect, when being "Yes", decline presser feet 16 in step S112.When the operator for example will confirm the compress position etc. of presser feet 16 and regulate cloth position etc., in step S113, connect presser feet switch 58 once more, and lift presser feet 16 at step S114, return step S111.

In addition, in step S113, disconnect presser feet switch 58, when being "No", in step S115, monitor the operation of starting switch 57, during connection, enter step S116 when being "Yes".

In step S116, judge whether to have selected first otch with the data items in the pattern data shown in Figure 7 " 7 ".If first otch, then carrying out in step S117 will be in rag knife action described later.

Cutting after the cloth action implements in step S116 when the "No" or in step S117 then carried out the buttonhole action in step S118.In the action of this buttonhole, comprise cloth pushing table 14 is shifted to the action of making the starting position and a series of actions such as tangent line behind the buttonhole.

After the buttonhole release, enter step S119, cloth pushing table 14, shank etc. move to origin position.

Then, in step S120, judge whether to have selected back otch,, promptly during "Yes", enter step S121 and implement and move with the cloth of cutting of sample with step S117 if selected back otch with the data items in the pattern data " 7 ".

In step S120, be judged as when not being the back otch, or the cutting after the cloth action of the step S121 that is through with, in step S122, lift presser feet 16 and return step S111, be in the state that presser feet switch 58 is operated in supervision once more, repeat above-mentioned buttonhole action according to the connection of presser feet switch 58.

Below, with reference to the flow process of the conversion of the storage among the flowchart text above-mentioned steps S101 of Figure 13 setting.

At first, in step S400, showing " 1 ", showing the setting value of storage conversion sequence number No.1 at data display part 59e at the project display part of guidance panel 59.

Then, monitoring data project in step S401+/-operation of key 59d, when connecting, when being "Yes", updated stored is changed sequence number No. and is shown on data items display part 59c in step S402, shows value corresponding at data display part 59e simultaneously.

Enter step S403 under the situation of "No" after step S402 or among the step S401.

Monitoring data in step S403+/-operation of key 59f, if be operated, when being "Yes", in step S404, renewal is corresponding to the setting value of the storage conversion sequence number No. that shows on data items display part 59c, and the setting value after the renewal is presented on the data display part 59e.

After the step S404, or when in step S403, being "No", enter step S405.

In step S405, monitor the operation of preparing key 59h, when not being operated, when being "No", return step S401, when being operated, when being "Yes", enter step S406 and also a storage translation data that sets is stored among the EEPROM53, enter step S102 then.

Below with reference to the flow chart of Figure 14, the data setting flow process among the above-mentioned steps S105 is described.

At first, in step S300, the data items display part 59c of guidance panel 59 goes up and shows " 1 ", is presented at the cutting knife sequence number No. that sets in the data items 1 on data display part 59e.

Then, monitoring data project in step S301+/-operation of key 59d, if be operated, when being "Yes", in step S302, upgrade the data items sequence number and be shown on the data items display part 59c, simultaneously its value corresponding is presented on the data display part 59e.

After step S302, or when in step S301, being "No", enter step S303.

In step S303, monitoring data+/-operation of key 59f, if be operated, when being "Yes", in step S304, upgrade value, and the value after upgrading is shown in data display part 59e corresponding to selected data items.After step S304, or when in step S303, being "No", enter step S305.

The operation of monitoring data setting key 59g in step S305 when being operated, when being "Yes", is updated to data after changing, and enters step S106 in step S306.In addition, in step S305, when being provided with operating data setting key 59g, return step S301.

Below, with reference to the flow chart of Figure 15, illustrate and in above-mentioned steps S117, cut the cloth motion flow.

At first, in step S200, for example, judge whether to select repeatedly cutting knife according to the cutting knife sequence number No. that is set at the data items " 1 " in the pattern data.Then, when not being repeatedly cutting knife, promptly during "No", decline rag knife 61 in step S201 forms the buttonhole 92 of band circle eye on cloth.In addition, when the cutting knife sequence number No. that selects rag knife 61 be 0, when promptly only selecting to have the cutting knife of the linearity blade that is used to form straight buttonhole 94, this cutting knife of decline forms straight buttonhole with this in step S201.

In addition, when in step S200, being judged as repeatedly cutting knife, when being "Yes", in step S202, judge in the data items " 10 " in pattern data whether set straight buttonhole.Then, be not set at straight buttonhole, when promptly being set at the buttonhole of band circle eye, promptly in step S202 during for "No", enter step S203.

In step S203, rag knife 61 is dropped to round eye off-position, on cloth, form and the identical shaped round eye 90 of the circle eye cutting knife 61a of portion of rag knife 61 and the straight line cutting knife 61b of portion and the part of line part 91.Under this state, because existing above-mentioned owing on cloth cuts part, so in step S204, the cutting knife height (lifting height) that can empty send that the storage conversion sequence number No.36 that rag knife 61 is risen to be used in as shown in figure 10 above cloth pushing table 14 sets, and in step S205, cloth pushing table 14 is moved to the roll setting position that calculates in above-mentioned steps S107.

Then, in step S206, make rag knife 61 drop to the line part off-position, cut off and enter step S207 owing to cut part.And, using when not possessing the cutting knife of spacer portion 61d, also implementation step S204～206 not.

In addition, in step S202, be judged as when setting straight buttonhole, then for "Yes" and enter step S212.

In step S212, cloth pushing table 14 is moved to the roll setting position first time of in above-mentioned steps S107, calculating.Then, in step S213, make rag knife 61 drop to the line part off-position, on cloth, form the part of the buttonhole 93 of the linearity identical, and enter step S207 with the straight line cutting knife 61b of the portion shape of rag knife 61.

In step S207, judge whether to have carried out roll setting operation with the roll setting number of times same number of in above-mentioned steps S107, calculating, when being "No", enter step S208, S204 is the same with above-mentioned steps, make rag knife 61 rise to the cutting knife height of setting with the storage conversion that can empty send, and in step S209, cloth pushing table 14 is moved to the roll setting position of the next time of in step S107, calculating.Then, in step S210, rag knife 61 is dropped to the line part off-position, and returning step S207 after the amount of cloth cut-out regulation.

In addition, when being "Yes" in step S207, that is, when having formed the buttonhole of regulation, enter step S211, rag knife 61 moves to origin position and enters step S118.

At this moment, as mentioned above, in step S205,209 and 212, though with mobile cloth pushing table 14 quantitatively, relatively change the ormal weight of buttonhole rag knife 61 forms to(for) the position (roll setting position) of cloth pushing table 14, but this roll setting position for example can be calculated as follows.For easy understanding, described in the following description be under cloth pushing table 14 is in the state of origin position, decline rag knife 61, on the assigned position of cloth, form circle eye 90 with this.

In addition, shown in Figure 16 (a), with the Y coordinate represent the position of the rear end part of the straight line cutting knife 61b of portion of rag knife 61 as the roll setting position.Simultaneously, at the initial point (Y=0) that the initial state whereabouts cutter position that cuts off of cloth is positioned at the Y direction.

The situation of the buttonhole 92 that forms band circle eye on cloth at first, is described with reference to Figure 16 (a).

At first, in order on cloth, to form circle eye 90, as mentioned above, under the state that at first rag knife 61 is descended, on the assigned position of cloth, form circle eye 90, and the roll setting position is Y=0 (with reference to Figure 16 (a) (1)).

Then, be mc owing to owe to cut the length of part, be Y=mc (with reference to Figure 16 (a) (2)) so be used to cut off the roll setting position of owing to cut part.

Then, be used for the length of line part 91 in the wings side cut following the calculating in roll setting position (with reference to Figure 16 (a) (3)) of full length L:

At first, L=ml-lc-ma, the roll setting times N is represented with N=L/mb.At this moment, when L/mb produced remainder, regular was N=N+1.

Then, be used for line part 91 in the wings side cut the i time full (i=1-N) roll setting the roll setting position as Yi, Yi=-L * i/N then.

Then, i=N, that is, in the moment that cutting knife falls for the N time, Yi=-L has finished expiring of line part 91 and has cut (with reference to Figure 16 (a) (4)).

But, during N=0, that is, there is no need in the wings side line part 91 is cut when full, then do not calculate to cut off and owe to cut the later roll setting position of part.

Below, the situation that forms straight buttonhole 94 on cloth is described with reference to Figure 16 (b).

At first, in order to form the buttonhole 93 of linearity on cloth, the roll setting position when making rag knife 61 declines at first is made as Y=ma-mb-cc (with reference to Figure 16 (b) (1)).

Then, the length of the buttonhole 93 of linearity in the wings side cut the roll setting position (with reference to Figure 16 (b) (2)) of full length L, calculate by following:

At first, L=ml-cc-lc-mb, rag knife 61 whereabouts times N are N=L/mb.At this, when L/mb had remainder, regular was N=N+1.

Then, be used for the buttonhole 93 of linearity in the wings side cut full the i time (the roll setting position of the cutting knife of i=1～N) be as Yi, then Yi=ma-mb-cc-L * i/N.

When i=N, that is, in the moment that rag knife 61 falls for the N time, (with reference to Figure 16 (b) (3)) finished in cutting completely of the buttonhole 93 of linearity.

But during N=0, that is, there is no need the buttonhole 93 of linearity in the wings side cut when full, do not calculate Yi.

And, in the above description, be simplified illustration, carried out the explanation of the ideal situation of the imagination, but when in fact forming buttonhole cut full with roll setting repeatedly, the reasons such as cloth fold by machine error or setting have the possibility of owing to cut between otch and otch.Therefore, in order to form buttonhole more reliably, preferably make the overlapping certain-length of each roll setting time institute cut-off parts calculate the roll setting position and form buttonhole (for example about 1mm).

In order to calculate this roll setting number of times or roll setting position, for example, when in the step S107 of Figure 12, calculating the roll setting position by CPU54, can be at the setting value of setting with the storage of Figure 10 conversion setting content, mb is shortened certain-length u (for example 1mm) and calculate the roll setting number of times, the length V (for example 1mm) of mc lengthening regulation is calculated the roll setting position.

The buttonhole that concrete is for the band circle eye of Figure 16 (a) is to calculate roll setting position in (2) with Y=mc+V, calculates the roll setting number of times with N=L/ (mb-u).The straight buttonhole of Figure 16 (b) is with N=L/ (mb-u), calculates with mb-u and owes to cut times N.

According to the Sewing machines shown in the present embodiment cut cloth control device 50 owing to can set shearing length correction lc, so the length m l-lc that can set the buttonhole of lockhole length m l and formation respectively with cutting knife (rag knife 61) repeatedly is each value.Therefore, after forming the buttonhole stitching, for prevent to make starting point and sewing finishing point burst forth or in order to strengthen, sometimes form and connect this door bolt line of 2, at this moment, the buttonhole 93 of the linearity of the line part 91 of the buttonhole 92 of band circle eye or straight buttonhole 94 etc. for example, when extending to by the position of 2 clampings, because the existence of the buttonhole 93 of this line part 91 and linearity, can occur in the part (cut) that does not have cloth falls pin and fastens seam phenomenon such as bad with a bolt or latch, but cut length correction lc to set, can make the buttonhole 93 of line part 91 and linearity can not extend to the position of making starting point and sewing finishing point clamping, can prevent above-mentioned poor stitching quality.

In addition, after the buttonhole 92 with circle eye cutting knife 61a of portion and the straight line cutting knife 61b of portion formation band circle eye, owing to the driving of control Sewing machines uses straight line cutting knife 61b the buttonhole 93 of the line part 91 connections formation linearity of the buttonhole 92 of band circle eye, so the amount that 91 prolongations of line part of the buttonhole 92 of band circle eye have been preestablished needn't be changed the buttonhole 92 of band circle that rag knife 61 and knife plate 62 just can form the line part 91 of different length.

In addition, select ss owing to can set straight buttonhole, thus can be only form the buttonhole 93 of the linearity of straight buttonhole 94 with the straight line cutting knife 61b of portion of cutting knife (rag knife 61) repeatedly, so when forming straight buttonhole 94, change necessity of the rag knife of stipulating.

In addition, form straight buttonhole 94, so needn't change the length of buttonhole 93 that rag knife 61 and knife plate 62 just can change the linearity of straight buttonhole 94 owing to cutting off cloth with the straight line cutting knife 61b of portion many times.

In addition, owing to can set straight buttonhole amount of bias cc, can form the buttonhole 93 of linearity in the optional position of buttonhole stitching, and, since can set shearing length correction lc, thus the length of the buttonhole 93 of linearity can be changed arbitrarily, and form straight buttonhole 94 corresponding to all size.

In addition, when the length m l-lc of formed buttonhole is long, also can use as shown in figure 17 have and this buttonhole length much at one edge length ma's and have the long structure of the length of the spacer portion 65c between straight line cutting knife 65a of portion and the circle eye cutting knife 65b of portion rag knife 65 and with rag knife 65 corresponding knife plates 66.At this moment, only need cut off above-mentioned operation of owing to cut part, omit and cut full operation, can also reduce the roll setting number of times simultaneously, shorten the formation required cycle of buttonhole.

In addition, send the cutting knife height,, form the required cycle of buttonhole so can shorten so if sending height setting to be and the essentially identical height of fabric thickness by sky, then the ascending amount of rag knife 61 is minimum necessary amount owing to can set sky.

And the present invention is not limited to embodiment 1, can suitably change.

For example, RAM52 is storing pattern data, EEPROM53 is storing the storage translation data, but also can for example store the storage translation data, use the EEPROM53 storing image data, perhaps also can store the both sides of pattern data and storage translation data with RAM52 or EEPROM53 with RAM52.In addition, also can use soft (registration mark) disk that substitutes EEPROM53.

In addition, that use as the data of relevant buttonhole length is ml-lc, also can be with the method that can directly set the length of buttonhole.At this moment, set the buttonhole length correction, buttonhole length=(buttonhole length+buttonhole length correction) is got final product.

In addition, be to implement moving up and down of rag knife 61 with the driving of control rag knife motor 74, but also be not limited to this, for example, if can make rag knife 61 stop at the structure of three positions of rag knife lifting position, circle eye off-position, line part off-position, then also can be with the well-known actuator of for example cylinder etc.

In addition, also can with what is called repeatedly cutter as rag knife and have an actuator that the circle eye cutting knife portion that can control this rag knife respectively and straight line cutting knife portion move, when forming circle eye 90 and line part 91 both sides, make the straight line cutting knife portion that descends simultaneously, when only forming line part 91, only descends of circle eye cutting knife portion and straight line cutting knife portion.

In addition, also can be with so-called standard cutting knife as rag knife, and possesses the actuator that the circle eye cutting knife portion that can control this rag knife respectively and straight line cutting knife portion move, when forming the both sides of circle eye 90 and line part 91, circle eye cutting knife portion and straight line cutting knife portion are descended simultaneously, and straight line cutting knife portion only descends when only forming line part 91.

In addition, also can use circle eye cutting knife portion and straight line cutting knife portion at the all-in-one-piece what is called standard cutting knife of sustained height as rag knife, knife plate is divided into corresponding to the part of the circle eye cutting knife portion of rag knife with corresponding to the part of straight line cutting knife, have simultaneously and can control the actuator that this each one moves respectively, according to the driving of the shape control knife plate that forms buttonhole.

In addition, also can dispose the knife plate that forms circle eye usefulness and form two kinds of knife plates of the knife plate that straight buttonhole uses, and have the structure that to select two kinds of knife plates with modes such as for example turntables arbitrarily, select knife plate according to the shape that forms buttonhole.

In addition, the quantity of pattern data, the quantity of the quantity of data items, storage conversion, the method for operating of guidance panel 59 etc. also can suitably change.And the quantity of pattern data also can be one.

And, in the above-described embodiments, be to store pattern data and therefrom select one to make the structure of stitching data, but also can in storing mechanism (RAM52), store a plurality of stitching data.

Perhaps, also can store a plurality of pattern datas and corresponding to the stitching data of each pattern data.At this moment, preferably when selecting pattern data, automatically specify the structure of stitching data.

And, in the present embodiment, though what show is that rag knife 61 is configured in the top and drives the situation that it descends to the knife plate 62 that is configured in the below, in contrast, also can be configured in the top to knife plate 62, rag knife 61 is configured in the below, drive knife plate 62 and descend.

In addition, carry out cut-out in the rag knife shown in the flow chart of Figure 15 action earlier and owe to cut part and prolong line part 91 (cutting full) which side can.

(embodiment 2)

Be Figure 18～embodiments of the invention 2 shown in Figure 34 below.As the Sewing machines 200 of the present invention's one example is the sewing machine for binding buttonhole the same with the Sewing machines 10 of embodiment 1, and other formation is just the same except that cloth-cutting apparatus 201, so identical components is used same-sign and omitted its explanation.

Below, describe cloth-cutting apparatus 201 in detail.This cloth-cutting apparatus 201 is to form the buttonhole 92 of band circle eye shown in Figure 9 and the device of straight buttonhole 94 when buttonhole.Each symbol of also quoting the buttonhole of each symbol of cutting knife of Fig. 8 (a) and Fig. 9 (a), (c) in embodiment 2 describes.

Shown in Figure 18, Figure 19 etc., cloth-cutting apparatus 201 has the cloth cut device of being made up of cutter assembly 100 and knife plate 160, and knife plate 160 at last, cutter assembly 100 down relatively to the ground setting.

Cutter assembly 100 mainly is made of with cutting knife member 102 with cutting knife member 101 and straight line the circle eye that is arranged on the cutting knife base component 103 as Figure 20, shown in Figure 21.

Circle eye cutting knife member 101, be by the supporting plate 101a that slightly becomes rectangular flat that has interarea in the horizontal direction and slightly to be cylindrical portion 101c cylindraceous from forming of erecting of this supporting plate 101a integrally formed, in the upper end of cylindrical portion 101c, be formed with and be used to form round eye 90 a drops circle eye cutting knife 101b.The inboard of cylindrical portion 101c is the cloth bits path 10 1e that vertically connects.In addition, the relief angle place on supporting plate 101a forms the notch 101d that is cut into the right angle, and by stopper element 120 described later and its engagement.

Straight line cutting knife member 102, found the thin plate part 102c that establishes by the supporting plate 102a of the slightly rectangular flat board that has interarea in the horizontal direction with on this supporting plate 102a integrally formed, in the upper end of this thin plate part 102c, be formed with the line part 91 of the buttonhole 92 that is used to form band circle eye and the straight line cutting knife 102b of straight buttonhole 94.Constitute rag knife by above-mentioned circle eye cutting knife 101b and straight line cutting knife 102b, this rag knife is waited and can be clear that by Figure 18, is arranged on the fore-and-aft direction by formed line part 91 of straight line cutting knife 102b and straight buttonhole 94 directions.

Cutting knife base component 103 as shown in figure 20, is to use to see that from the top rear edge portion is the member that the base plate 103a of circular-arc roughly rectangular shape supports whole cutter assembly 100.

Cutting knife base component 103 is fixed on the workbench 200b by hold-down screw 152,152.

And, the feather key 150 that is fixed on the base plate 103a with screw 151 can make base plate 103a along the not shown groove that forms on workbench 200b, slides, suitably regulated to the left and right directions vertical with fore-and-aft direction (above-below direction of Figure 20 drawing) under the state of position, the left and right sides to be fixed with above-mentioned hold-down screw 152,152.

In the front portion of base component 103, be used to support the circle eye and use cutting knife member 101 and straight line with the cutting knife supporting mass 103b of cutting knife member 102, erect integrally formed from base plate 103a with it.The top of cutting knife supporting mass 103b is rectangular-shaped pedestal 103c, at this formation concave surface above pedestal 103 (omitting diagram) and embed the supporting plate 102a of cutting knife member 102 on this concave surface.

And the edge side of the side of supporting plate 102a is being pressed straight line cutting knife fixation clip 105b from the top, and this straight line cutting knife stationary fixture 105b is fixed on the side of pedestal 103c with straight line cutting knife hold-down screw 106b.Be fixed on pedestal 103c securely, be on the cutting knife base component 103 with cutting knife member 102 with this straight line.

Central part in the inside of pedestal 103c shown in the cutting line M2 of Figure 21, has been screwed into set screw 115a, 115b.The head of set screw 115a is protruded with pedestal 104 sides to circle eye cutting knife, erect the forward position of the circle eye cutting knife of state (state of Figure 21) with pedestal 104 in order to decision.

In addition,, be formed with the recess 103d (Figure 21) of cuboid, be embedded in circle eye cutting knife pedestal 104 at this recess 103d in the inboard of cutting knife supporting mass 103b.Be formed with concave surface (omitting diagram) at circle eye cutting knife above with pedestal 104, on this concave surface, embed the supporting plate 101a that the circle eye is used cutting knife member 101.With the mode of the bottom of pedestal 104 fulcrum shaft 107 is housed to run through cutting knife supporting mass 103b and circle eye cutting knife, and circle eye cutting knife to use pedestal 104 can be that rotate with respect to cutting knife supporting mass 103b at the center with fulcrum shaft 107.

And the lateral edges side of supporting plate 101a is being pressed circle eye cutting knife stationary fixture 105a from the top, and with circle eye cutting knife hold-down screw 106a this circle eye cutting knife stationary fixture 105a is fixed on circle eye cutting knife with on the pedestal 104.Be fixed on circle eye cutting knife reliably with on the pedestal 104 with this circle eye with cutting knife member 101.

On with the circle eye cutting knife stationary fixture 105a opposite side of circle eye cutting knife, the spacing member 120 of decision circle eye with cutting knife member 101 positions is installed with screw 121 with pedestal 104.On spacing member 120, be formed with not shown cross-drilled hole, and can slide with respect to above-mentioned screw 121, can move the position of the fore-and-aft direction of spacing member 120 with this along this cross-drilled hole.The protuberance 120a that formation directed circle eye cutting knife protrudes above with pedestal 104 on spacing member 120.Spacing member 120 suitably slides, regulating under the state of position, after being fixed on the circle eye cutting knife usefulness pedestal 104 with screw 121, circle eye is abutted against with protuberance 120a mutually with the breach 101d of cutting knife member 101 and uses the circle eye cutting knife member 101 to locate, and as mentioned above, be fixed with circle eye cutting knife stationary fixture 105a etc.

Be embedded with spring 108 on above-mentioned fulcrum shaft 107, the two ends of this spring 108 are pressed in respectively is fixed in circle eye cutting knife with on the susceptor pin 109 and base plate 103a on the pedestal 104.Therefore, circle eye cutting knife is subjected to the anticlockwise thrust among Figure 21 of spring 108 with pedestal 104.

In addition, at the rear of cutting knife base component 103, be provided with dbl act cylinder 110.Cylinder 110 usefulness cylinder body screws 112,112 are fixed on limit screw 113,113 and can be installed on the cylinder mounting plate 111 with respect to base plate 103a with adjusting front and back position.At the front end of the cylinder bar 110a of cylinder 110, cylinder bearing pin 114 is being threaded.The front end of this cylinder bearing pin 114 is abutted against with pedestal 104 mutually with circle eye cutting knife.

On cylinder bearing pin 114, be formed with the tie rod holes 114a that connects horizontal direction, in this tie rod holes 114a, be installed with connecting rod 116.Connecting rod 116 is seen the コ font that slightly is shown in Figure 20 from above.The two ends of connecting rod 116 are the U font as shown in figure 21 and are hung in and are fixed in circle eye cutting knife with on the pitman pin 117,117 on the pedestal 104.Connecting rod 116 slides freely with respect to cylinder bearing pin 114 and pitman pin 117,117.Simultaneously, the not end at pitman pin 117,117 is equipped with the slip of E type baffle ring 118 in order to limiting rod 116 respectively, in order to avoid connecting rod 116 is deviate from from pitman pin 117,117.

Cylinder 110 is when closing, and cylinder bar 110a protrudes, and at this moment cylinder bearing pin 114 is bigger than the thrust of above-mentioned spring 108 with pedestal 104, this thrust to clockwise direction pushing circle eye cutting knife, the erectility that circle eye cutting knife is kept as shown in figure 21 with pedestal 104.

When cylinder bar 110a is just drawn in cylinder 110 connection in a single day, and by connecting rod 116 by pitman pin 117,117 pulling circle eye cutting knifes with pedestals 104, serve as axial counter clockwise direction rotate and fall down (with reference to Figure 22 (b)) because of the thrust of spring 108 makes it with fulcrum shaft 107 simultaneously.

That is, cylinder 110 and spring 108 become travel mechanism of the present invention.

And, as a drive source that makes circle eye cutting knife with pedestal 104 actions, be not limited to the such dbl act cylinder of cylinder 110, also can be the cylinder of other type, also can be with the actuator of solenoid or motor etc.

In the inside of circle eye cutting knife with pedestal 104, be formed with the circle eye with the cloth bits path 101e of cutting knife member 101 link to each other ground connection backward the cloth of below inclination consider path 104a to be worth doing.

Rearward end at cloth bits path 104a is an opening, considers to be worth doing through cloth bits path 101e, 104a because of circle eye cutting knife 101b cuts off the cloth that cloth produced, and falls from above-mentioned opening.

On the base plate 103a of cutting knife base component 103, also form porose (omitting diagram), in this hole, be pressed into pipe hub 131 cylindraceous.The cloth bits that fall from above-mentioned opening, or fall within the pipe hub bore 131a that forms on the pipe hub 131 or drop near its upper edge.

So, the path of discharging the cloth bits disconnects midway and manages hub 131 sides and be connected at the opening part of cloth bits path 104a.

And, on base plate 103a, fixing cloth bits protective cover 122 with hold-down screw 123,123, so that the cloth bits of discharging from the above-mentioned opening of cloth bits path 104a can not dispersed around the rear of aforementioned tube hub bore 131a.

In the inside of aforementioned tube hub 131, be equipped with and the front end of managing the pipe 133 that hub bore 131a is communicated with.The other end of pipe 133 is connected the inside of aspirator 134.Pipe 133 usefulness limit screws 132 are fixed on pipe hub 131, are fixed on the aspirator 134 with limit screw 135.

Aspirator 134 is arranged on the inside under the workbench 200b as shown in figure 18.As shown in figure 21, on aspirator 134, fixing latch segment 142.With this latch segment 142 airduct 140 is fixed on the aspirator 134.Airduct 140 is pipes of supplying to aspirator 134 from the air of not shown air supply source,

Its front end is connected with the airduct 136 of aspirator 134 inside by joint 141.The end of joint 141 sides of airduct 136 is reduced, makes by the air pressurized of airduct 140, joint 141 supplies and along the arrow A direction to supply with in airduct 136.Front end at airduct 136 is connecting the tube connector 137 that picks out to the outside, and is connecting flexible pipe 138 at the front end of tube connector 137 with the clip 139 of ring-type.Simultaneously, the airduct 136 in above-mentioned pipe 133 and the aspirator 134 is connected.

From airduct 140 air supplies, produce wind, and manage the wind that produces in 133 along the arrow B direction with consequent negative pressure along the arrow A direction.Derive to Sewing machines 200 outsides with the flow draws cloth bits of this air and with flexible pipe 138.

And, be the section of pipe 133 major part and tube connector 137, flexible pipe 138 shown in Figure 21, omitted the internal structure of aspirator 134.

Plane knife plate 160 as shown in figure 22, is fixed on the knife plate erecting bed 162, formed smooth below, be formed with the circle eye knife plate 160b of portion of circle eye cutting knife 101b closure and with the straight line knife plate 160c of portion of straight line cutting knife 102b closure.Between plane knife plate 160 and circle eye cutting knife 101b and straight line cutting knife 102b, on one side the crush-cutting cloth sewn object is cut off form buttonhole on one side.

Knife plate erecting bed 162 is fixed on the lower end that has with the straight moving axis 40 of the knife plate driving mechanism (knife drive mechanism) 170 of the knife drive mechanism 20 identical structures of embodiment 1.With this, drive knife plate 160 up and down with knife plate driving mechanism 170 time in accordance with regulations.

In the inside of knife plate erecting bed 162, be formed with the horizontal pore 165 that air is laterally passed through.Laterally an end of pore 165 clogs with lid 164, and an other end is equipped with joint 163, is connecting air pipe line 175 (Figure 19) on this joint 163.Have vertical pore 166 from the central authorities of horizontal pore 165, and a vertical pore 166 is connected with the vertical core 160a of formation in plane knife plate 160 towards the below.Vertical core 160a be positioned at circle eye cutting knife 101b directly over.With this, when from air pipe line 175 during by joint 163 air supplies, this air will blow out from the vertical core 160a of plane knife plate 160.

Cloth with plane knife plate 160 and circle eye cutting knife 101b cut-out is considered to be worth doing, is blown off by the air that blows out from vertical core 160a and considers to be worth doing in the path 101c with the cloth in the cutting knife member 101 at the circle eye.

But, between the circle eye cutting knife that is in the state of erecting is with circle eye cutting knife 101b on the pedestal 104 and straight line cutting knife 102b, exist as Figure 21, Figure 22 (a) the interval w2 that clearly represents.This is the closed length w1 weak point than plane knife plate 160 and straight line cutting knife 102b of the length setting of w2 at interval.Preferably below the w1-w2=2mm.With such setting, when when the buttonhole of circle eye is with in the formation of circle eye cutting knife 101b straight line cutting knife 102b and plane knife plate 160, for the first time cut off and then cut off corresponding to interval w2 owe to cut part the time, once move and to cut off with straight line cutting knife 102b and plane knife plate 160, and, can overlap and cut off reliably with cut-out for the first time a little.

At this moment, the length of w2 at interval is corresponding to the length w1 of length m c, plane knife plate 160 and the straight line cutting knife 102b closure of the embodiment 1 length m b corresponding to the straight line cutting knife 61b of portion.Below, the length of interval w2 is described as " mb " as " mc ", length w1.

And the cloth-cutting apparatus 201 of present embodiment as shown in figure 23, can replace plane knife plate 160 and installation ladder knife plate 167.Below this ladder knife plate 167, by with the straight line knife plate portion 169 of straight line cutting knife 102b closure and protrude downwards with ladder 167a part than straight line knife plate portion 169 and form with the circle eye knife plate portion 168 of circle eye cutting knife 101b closure.Ladder 167a is formed on when round eye cutting knife 101b and circle eye knife plate 168 closures, and straight line cutting knife 102b does not reach the specified altitude of straight line knife plate portion 169, for example height of 2～3mm.On ladder knife plate 167 with the plane knife plate 160 the same vertical core 167b that have.

With this ladder knife plate 167 time, only to form round eye 90.In detail action remains aftermentioned.

And cloth-cutting apparatus 201 is the same with embodiment 1, circle eye cutting knife and straight line cutting knife can be installed be regardless of turn up the soil the standard cutting knife that fuses or the standard cutting knife of buttonhole special use directly.

The cloth-cutting apparatus 201 and cloth pushing table 14 coordinated movements of various economic factors of the relative moving mechanism of the present invention of direction work feed forwards, backwards with said structure form the hole of stipulating on cloth.Below, the mechanical action of cloth-cutting apparatus 201 and cloth pushing table 14 is described with reference to Figure 20～Figure 26.Figure 24～Figure 26 is the process schematic diagram that each stage of branch forms buttonhole, and grey is illustrated in this stage cut-out part, and oblique line partly is illustrated in stage cut-out part, and symbol P represents the stitching around the buttonhole.

(1) to mounting plane knife plate 160 as knife plate, and describe having made the situation that the buttonhole stitching forms the buttonhole 92 of band circle eye later on.

At first, form after the stitching P,, and cut the cloth position to what cloth (sewn object) was transported to regulation on the cutter assembly 100 with cloth pushing table 14 with not shown mechanism's cut-out upper thread.At this moment, cloth-cutting apparatus 201 is shown in Figure 22 (a), and cylinder 110 is in and stops (OFF) state, and cylinder bar 110a protrudes and makes circle eye cutting knife be in the erectility that pushes with cylinder bearing pin 114 with pedestal 104.Circle eye cutting knife is positioned at and can cuts off the primary importance of being made.

By being subjected to the driving of knife plate driving mechanism 170, plane knife plate 160 decline ormal weights.When the plane drops to position near circle eye cutting knife 101b and straight line cutting knife 102b when knife plate 160, joint 163 by knife plate erecting bed 162 begins air supplies, and uses the cloth bits path 101e injection air of cutting knife member 101 to the circle eye from vertical core 160a through horizontal pore 165, vertical pore 166.From the aerojet of this top, last till after circle eye 90 cuts off, till plane knife plate 160 rises and fully leaves from a circle eye cutting knife 101b always.

Plane knife plate 160 continues to descend, and with circle eye cutting knife 101b and straight line cutting knife 102b closure, shown in the grey of Figure 24 (a), forms the first otch h1 of a circle eye 90 and line part 91 parts on sewn object during end.Between circle eye 90 and the first otch h1, exist and owe to cut part S corresponding to above-mentioned gap length mc.

When this cuts off, in case between circle eye cutting knife 101b and plane knife plate 160, produce drops cloth bits, then by the air that blows out from top blow pressure cloth bits downwards, discharge with pedestal 104 from circle eye cutting knife through cloth bits path 101e, 104a, it is not dispersed and fall around the pipe hub bore 131a of pipe hub 131 or its with cloth bits protective cover 122.

In addition, also by joint 141 air supplies, owing to produce the effect of negative pressure like this in airduct 136, the cloth bits are inhaled into pipe hub bore 131a and enter in the aspirator 134, it are reclaimed in the outside of Sewing machines 200 by tube connector 137, flexible pipe 138 in aspirator 134.There is no particular limitation from the 141 air fed times of joint, so long as from by joint 163 by the top begin to supply air to till whole releases of cutting cloth during just passable, but preferably with from joint 163 air supply simultaneously.If such time, then can be one identical being combined in from the air of top and the suction of suction, discharge the cloth bits reliably, and can sharedly be used for making structure control simple to joint 163 and joint 141 air fed electromagnetic valves.

Then, knife plate driving mechanism 170 counteragents, plane knife plate 160 rise to and do not interfere the height that cloth moves and stop.At this moment, cylinder 110 is connected, and cylinder bar 110a is drawn into.Therefore, with the connecting rod 116 traction circle eye cutting knifes pedestals 104 that are through on the cylinder bearing pin 114, pressure because of spring 108 makes circle eye cutting knife counterclockwise rotate, also make a concession for middle mind-set with fulcrum shaft 107 with pedestal 104 simultaneously, is the state shown in Figure 22 (b).At this moment circle eye cutting knife 101b is positioned at not the second place with plane knife plate 160 closures.

But, why not merely rely on the spring force of spring 108 and use by connecting rod 116 usefulness cylinder bearing pins 114 and draw the structure of circle eye cutting knife with pedestal 104, following reason is arranged.On circle eye cutting knife 101b sometimes as the cloth of sewn object paste very tight, only with the words of spring 108 because of and cloth between the relation of frictional force, a circle cutting knife is difficult to fall down with pedestal 104.So can guarantee of the yielding of circle eye cutting knife with pedestal 104 with 114 tractions of cylinder bearing pin.

After the cylinder bar 110a of cylinder 110 is pulled, make cloth pushing table 14 actions, cloth is moved to next off-position.With knife plate driving mechanism 170 plane knife plate 160 is descended once more because a circle eye cutting knife 101b makes a concession, so only with straight line cutting knife 102b closure, formed the second otch h2 shown in the grey among Figure 24 (b).By this cut-out, round eye 90 and line part 91 have been connected.

At this moment, when not reaching " making length m l-shearing length correction lc " in shearing length, plane knife plate 160 rises to the position of not interfering cloth to move once more, with cloth pushing table 14 cloth is moved to assigned position, decline plane knife plate 160 and straight line cutting knife 102b closure form the three cuts h3 shown in Figure 24 (c).Obtained to justify the buttonhole 92 of eye with this by the band that circle eye 90 and line part 91 couple together.The cut-out of having used three releases in this embodiment, when forming the buttonhole of band circle eye, number of times is so long as several times can more than twice as an example.

And, when for the second time later cut-out, owing to do not produce the cloth bits, so needn't be to joint 163,141 air supplies.

After above cut-out release, finish processing such as bottom line cut-out.

In addition, the cloth with cloth pushing table 14 before cutting off for the second time and for the third time moves, and must be adjusted to before it position that overlaps with the otch that has cut off.Concrete coincidence degree will be left more than the apex portion 1mm of round eye 90 according to the value of above-mentioned length m b and gap length mc, and carries out secondary cut-out with justifying eye 90 identical with the first otch h1 (about each 1mm) degree ground to overlap.Cut off more than when cutting off for the third time, preferably also overlapping 1mm with the second otch h2 that cuts off for the second time.

Promptly, each amount of movement of cloth pushing table 14 during the Qie Bu action is calculated and is controlled by " but shearing length first time (from the part of circle eye 90 summits and line part 91) ", " with the actual shearing length mb of straight line cutting knife 102b ", " the owing to cut length " of learning from cutting knife sequence number No..The detailed description of control will be in aftermentioned.

(2) below, the situation of making lock seaming stitching P behind the buttonhole that forms band circle eye around it is described.

At first, after cloth being transported to the cloth off-position of regulation, carry out and (1) same cut-out, be transported to sewing position by cloth pushing table 14 then, carry out processing such as tangent line again by cloth pushing table 14.

Below, when (3) are formed straight buttonhole 94 with plane knife plate 160 and, the situation in (4) during use ladder knife plate 167 describes.But, about eyelet, can see clearly from above-mentioned (1), (2), eyelet with cut cloth context in time, do not have direct relation with cloth-cutting apparatus 200 and action thereof, so the action of cloth-cutting apparatus 200 only is described afterwards.

(3) below the situation that forms straight buttonhole 94 is described.

At first, cylinder bar 110a and traction circle eye cutting knife pedestal 104 are drawn in cylinder 110 connections, and the spring force by spring 108 makes a circle eye cutting knife be in the state of dodging shown in Figure 22 (b) with pedestal 104 simultaneously.Under this state, cut the cloth position to what cloth was transported to regulation with cloth pushing table 14.

Knife plate driving mechanism 170 action, plane knife plate 160 decline ormal weights because a circle eye cutting knife 101b dodges, thus only with straight line cutting knife 102b closure, form the last first otch h4 shown in the grey as Figure 25 (a).

When the cut-out amount does not reach necessary length, (1) the action second time is the same, and plane knife plate 160 rises to the degree of not interfering cloth to move, and cloth pushing table 14 moves predetermined distance, the plane knife plate 160 that descends again carries out the second time to cut off, and forms the second otch h5 shown in Figure 25 (b).Cut off equally, for the third time and will shown in Figure 25 (c), cut off three cuts h6 and form straight buttonhole 94.

Straight buttonhole 94 can change off-position and shearing length arbitrarily for lock seaming length by the numerical value of change " straight buttonhole amount of bias cc " and " shearing length correction lc ".

Like this, when forming straight buttonhole 94, cutting off the initial of action, circle eye cutting knife is made a concession with pedestal 104, only cutting off with straight line cutting knife 102b.In addition, so owing to do not produce not butt joint of cloth bits 163,141 air supplies.

In addition, the same when reaching the amount of movement that cuts off preceding cloth pushing table 14 for the third time for the second time with the buttonhole 92 that forms the round eye of band, be adjusted to the otch that cuts off with the last time and overlap the above position of 1mm.

More than, as the explanation of (1)～(3), under the situation of not changing cutting knife or knife plate, freely change tape is justified the buttonhole 92 of eye, the conversion and the shearing length of straight buttonhole 94.

(4), below the situation that ladder knife plate 167 is contained on the knife plate erecting bed 162 is described.

With ladder knife plate 167 form band circle eye buttonhole 92 or as during the hole of flower arrangement eyelet, at first, shown in Figure 23 (a), cloth-cutting apparatus 201 is in the closed condition of cylinder 110, and cylinder bar 110a protrudes and is erectility with cylinder bearing pin 114 pushing circle eye cutting knifes with pedestal 104.

By the driving of knife plate driving mechanism 170, ladder knife plate 167 decline ormal weights.Because ladder knife plate 167 is provided with ladder 167a, thus only with circle eye cutting knife 101b closure, shown in the grey of Figure 26 (a), only form circle eye 90.When the hole of formation as flower arrangement eyelet, ladder knife plate 167 is risen to the origin-location action promptly come to an end.

In addition, when forming the buttonhole 92 of band circle eye, after this, cylinder 110 is connected, and circle eye cutting knife is in the state of dodging of Figure 23 (b) with pedestal 104.In addition, make ladder knife plate 167 rise to the height of not interfering cloth to move, partly repeat to use the action of cloth pushing table 14 moving cloths, decline ladder knife plate 167 in the length of necessity, shown in the grey of Figure 26 (b)～(d), cut full, as to form band circle eye buttonhole 92 according to the order of the first otch h7, the second otch h8, three cuts h9.And for the second time, for the third time, move with the cloth of cloth pushing table 14 before cutting off for the 4th time, the cut-off part with last time formation overlaps for example more than the 1mm at least respectively.

The same with above-mentioned (1), ladder knife plate 167 1 drops to the position near circle eye cutting knife 101b when cutting off for the first time, just the joint 163 by knife plate erecting bed 162 begins air supplies, from the following cloth bits path 101e injection air of using cutting knife member 101 towards the circle eye of ladder knife plate 167.Meanwhile, also begin joint 141 air supplies to aspirator 134 sides.After the supply of this air lasts till the cut-out of round eye 90 always, ladder knife plate 167 rises and fully leave from a circle eye cutting knife 101b.

Just the same about the situation and above-mentioned (2) that form straight buttonhole 94 with ladder knife plate 167.

Therefore, if, then can form single round eye 90, the buttonhole 92 of band circle eye, straight buttonhole 94, can freely change the length of two buttonholes with ladder knife plate 167.

Below, explanation is located at the control device 108 on the Sewing machines 200 with reference to Figure 27.Control device 180 is basic identical with the control device 50 of embodiment 1, so to using same-sign with spline structure and slightly economize its explanation, below difference from Example 1 only is described.

In control device 180, the CPU54 of controlling organization is connected with the air cylinder driven electromagnetic valve 76a that drives above-mentioned cylinder 110 by interface 55.CPU54 drives air cylinder driven electromagnetic valve 76a by interface 55 time according to the rules, a circle eye cutting knife is fallen down with pedestal 104 or erects.

In addition, with control device 108, can drive the ON/OFF of electromagnetic valve 77a control by interface 55 and air pump to air hose 140 and air pipe line 175 air fed air pump 77b.

RAM52 is the same with embodiment 1, is when storing a plurality of pattern datas, stores data of selecting by guidance panel 59 from these data and the storing mechanism that stores the change value of the data value after selecting.

Data items and Fig. 7 of pattern data are basic identical, and just data items 10 is a bit different.

Buttonhole kind of the present invention is selected the data items 10 of data, is a side in using plane knife plate 160 or ladder knife plate 167 during as knife plate, to the sewn object selection 1. following～4. 4 kinds of projects of making.

1. form the buttonhole 92 (below, be that 1. " buttonhole of flat knife strip circle eye " forms) of band circle eye with plane knife plate 160.

2. form straight buttonhole 94 (below, 2. " straight buttonhole " forms) with plane knife plate 160 or ladder knife plate 167.

3. with ladder knife plate 167 form band circle eye buttonhole 92 (below, 3. " ladder knife plate circle eye buttonhole " form).

4. form single round eye 90 (below, 4. " the single round eye of ladder knife plate " forms) with ladder knife plate 167 and select one of them.

Meanwhile, not " straight buttonhole is selected " and become " straight buttonhole/circle eye selection " as " ss " of data items name, with～4. one of them selection data 1. above-mentioned to being applied to select to form.Specifically, be set at " 0 " when selecting 1. " buttonhole of flat knife strip circle eye ", be set at " 1 " when selecting 2. " straight buttonhole ", be set at " 2 " when selecting 3. " buttonhole of ladder knife plate band circle eye ", be set at " 3 " when selecting 4. " the single circle eye of ladder knife plate ", can set desirable buttonhole and keyhole stitch seam with this.

In addition, the setting content of storage conversion is also basic identical with Figure 10, is that No.36 becomes " can sky send the knife plate height ".

And the same with embodiment 1, the cutting knife sequence number No. of corresponding actual installation can select this cutting knife sequence number No. with data items 1.Also in cutting knife sequence number No.0～5, set in the present embodiment and set the repeatedly cutting knife that constitutes with cutting knife member 102 with cutting knife member 101 and straight line by the circle eye in above-mentioned standard cutting knife, cutting knife sequence number No.6～10, that is, be used to form twice above cutting knife of needs driving of the buttonhole of band circle eye.

Below, with the process of flowchart text formation buttonhole stitching operation.Processing (Figure 13), data setting processing (Figure 14) are set in the common flow process (Figure 12), the storage conversion that have too in embodiment 2 among the embodiment 1.

Flowchart text referring now to Figure 28 is the rag knife action of present embodiment feature.Preceding topic is that operating personnel install suitable cutting knife, knife plate according to the hole that will form and carry out predetermined data corresponding with it with guidance panel 59 and set.

At first, in step S500, judge in the data items " 1 " in the pattern data for example and set after the cutting knife sequence number No., whether select repeatedly cutting knife.Then, if what install is standard cutting knife and plane knife plate 160, then the right and wrong "No" of cutting knife repeatedly makes plane knife plate 160 descend in step S518, forms buttonhole on cloth.At this moment, be 0 at cutting knife sequence number No., when promptly selecting only to have the cutting knife of the linearity blade that is used to form straight buttonhole 94, in step S518, form straight buttonhole, selecting cutting knife sequence number No.1～5 o'clock then to form the buttonhole of band circle eye.

In addition, when in step S500, being judged as repeatedly cutting knife, then in step S501, judge whether in pattern data data items " 10 " be set at ss=1, that is, whether selected straight buttonhole.Then, when not selecting straight buttonhole, promptly select ss=0,2, at 3 o'clock, then enter step S502.

In step S502, plane knife plate 160 or ladder knife plate 167 are dropped to the off-position of regulation.If plane knife plate 160 then forms a part of using circle eye cutting knife 101b and shape, the corresponding round eye 90 of size and the line part 91 that straight line is used the straight line cutting knife 102b of cutting knife member 102 of cutting knife member with round eye on sewn object.If ladder knife plate 167 then only forms circle eye 90.

Then, connect above-mentioned air pump 77b in step S503 stopped later in about 50 seconds.

Then, judge in step S504 whether the setting of the data items " 10 " in the pattern data is ss=3,, whether has selected single round eye 90 that is.When having selected single round eye 90 (being), enter step S513 in order to finish to cut the cloth action.

If data items 10 be set at ss=0,2 one of them the time, that is, when selecting to form the buttonhole 92 of band circle eye, then enter step S505 from step S504 with plane knife plate 160 or ladder knife plate 167.

In step S505, " can sky send the cutting knife height " according to setting in storage conversion No.36 rises to the height that does not hinder cloth pushing table 14 to move to plane knife plate 160 (ladder knife plate 167).

Then, in step S506, start cylinder 110,, enter step S507 in order to be that the circle eye falls down shown in Figure 22 (b) or Figure 23 (b) like that with cutting knife member 101.After this only cut cloth with straight line cutting knife 102b.

In step S507, cloth pushing table 14 is moved to (Figure 22 (a)) and cut the cloth position second time that in above-mentioned steps S107, calculate corresponding to interval w1.Control amount of movement at this moment has the position that overlaps slightly so that make knife plate drop to aforesaid otch with cut-out for the first time.Specifically, if plane knife plate 160 then is the position of owing to cut part that is used to cut off corresponding to above-mentioned interval w2, if ladder knife plate 167 then is the position that cuts off the fore-end of the line part 91 that is connected with circle eye 90.

Then, in step S508, make plane knife plate 160 or ladder knife plate 167 drop to off-position, cut off cloth and shift, enter step S509 to step S509.

In addition, when in step S501, being judged as "Yes", that is, when selecting the straight buttonhole of ss=1, enter step S515.In step S515, start cylinder 110 will justify the eye topple over cutting knife member 101.After this, just can only cut off with cutting knife member 102 with straight line.

Then, in step S516, cloth pushing table 14 is moved to the position, the knife plate whereabouts first time (cutting the cloth position) of calculating in above-mentioned steps S107.Then, in step S517, plane knife plate 160 or ladder knife plate 167 are dropped to off-position, on sewn object, form with the shape of straight line cutting knife 102b with the buttonhole of the corresponding linearity of knife plate closure length and enter step S509.

In step S509, judge whether to have carried out roll setting action with the roll setting number of times same number of in above-mentioned steps S107, calculating, when being "No", enter step S510 and and above-mentioned steps S505 plane knife plate 160 or ladder knife plate 167 are risen to sky the samely and send highly.Then, in step S511, cloth pushing table 14 is moved to the position, next knife plate whereabouts (cutting the cloth position) of calculating in above-mentioned steps S107.

Then, in step S512, knife plate is dropped to off-position, cut full specific length and return step S509, the roll setting action of the roll setting number of times same number that judges whether once more to carry out and in above-mentioned steps S107, calculate, when being "Yes", that is, during the formation of the buttonhole that has been through with, enter step S513.At this moment, make plane knife plate 160 or ladder knife plate 167 rise to original origin position (extreme higher position), then shifter cylinder 110 in step S514 makes the circle eye erect, finish to cut the cloth action with cutting knife member 101 and handles.

In addition, when arriving step S514 passing through step S504 and step S518, cylinder 110 is intactly being closed, under closing state, even the order that output is closed any problem can not take place yet.

But control is used to form the down position of cut-out of the buttonhole 92 of band circle eye of step S502 and step S518 or circle eye 90 and other down position, makes the former drop to lower position.This is owing to form circle at the moment, and closed area is big and need be with bigger defeating into knife plate.

At this moment, as mentioned above, in step S507 and step S511, S516,, relatively change the position (knife plate position) of 201 pairs of cloth pushing tables 14 of shearing device and form the buttonhole of specific length with the method for measuring mobile cloth pushing table 14 in accordance with regulations.This position, knife plate whereabouts for example can be calculated by following.The following computational methods that position, knife plate whereabouts is described according to Figure 29.Figure 29 (a) is when being used to illustrate above-mentioned ss=0, (b) is when being used to ss=1 is described, (c) is when being used to ss=2 is described, (d) is the diagram when being used to ss=3 is described.And, the situation of cloth-cutting apparatus 201 when being presented at each locational cut-out shown in Figure 29 with Figure 30 pattern.

For the ease of understanding, explanation be that descend under cloth pushing table 14 is positioned at the state of origin position knife plate and the assigned position on cloth forms the situation of round eye 90.

In addition, shown in Figure 29 (a), the rear end part of plane knife plate 160 (ladder knife plate 167) and straight line cutting knife 102 enclosed region is also represented with the Y coordinate as position, knife plate whereabouts.And, under the state of the cloth of ingressing most in Figure 29 (a), the initial point (Y=0) of position, knife plate whereabouts as the Y direction, and (b)～(d) corresponding with (a), the position identical with (a) is made as Y=0.

At first, with Figure 29 (a) process that forms the buttonhole 92 of band circle eye with plane knife plate 160 on cloth is described.

In order to form the part of circle eye 90 and line part 91 on cloth, when the knife plate 160 of initial decline plane, as mentioned above, position, knife plate whereabouts is positioned at the assigned position (with reference to (1) of Figure 29 (a)) of Y=0.At this moment plane knife plate 160 and circle eye are the state shown in (A) of Figure 30 with the pass of cutting knife member 102 with cutting knife member 101 straight lines.

Then, being used to cut off the position, knife plate whereabouts of owing the portion of cutting corresponding to above-mentioned w2, is mc because owe to cut length partly, so shown in Figure 29 (a) (2), be Y=mc.

Then, following calculating is used for the length of line part 91 is cut out the full position, knife plate whereabouts of cutting of length L (with reference to Figure 29 (a) (3)) rearward again.

At first, L=ml-lc-ma, the whereabouts times N of plane knife plate 160 is represented with N=L/mb.Regular when at this moment, L/mb has remainder is N=N+1.

Therefore, if will line part 91 in the wings side cut full the i time (position, knife plate whereabouts that the knife plate of i=1～N) falls be as Yi, then Yi=-L * i/N.Therefore, when i=N, that is, in the moment that cutting knife falls for the N time, Yi=-L, just cutting of line part 91 completely finished (with reference to (4) of Figure 29 (a)).

But, when N=0, that is, when there is no need in the wings side and cutting full line part 91, just do not calculate to cut off and do not owe to cut the later position, knife plate whereabouts of part.

(2)～(4) at Figure 29 (a) are located, and circle eye be the tilt state shown in Figure 30 (B) with a cutting

knife member

101, and 160 of plane knife plates and straight line are with cutting knife member 102 closures.

Below, the situation that forms straight buttonhole 94 on cloth is described with Figure 29 (b).When forming straight buttonhole 94, no matter use plane knife plate 160, ladder knife plate 167 which as knife plate can, shown in Figure 30 (B), (D), all be to be in that the circle eye is toppled over cutting knife member 101 and knife plate is only used the state of cutting knife member 102 closures with straight line.

When forming straight buttonhole 94, the position, knife plate whereabouts when plane knife plate 160 (ladder knife plate 167) is descended is Y=ma-mb-cc (with reference to Figure 29 (b) (1)).

Then, be used for the length of the buttonhole 93 of cutting full linearity in the wings the side position, knife plate whereabouts (with reference to Figure 29 (b) (2)) of cutting length L again by as below calculate.

At first, L=ml-cc-lc-mb, the whereabouts times N of plane knife plate 160 (ladder knife plate 167) is N=L/mb.Regular when at this moment, L/mb has remainder is N=N+1.

Then, if be used for the buttonhole 93 of linearity in the wings side cut full the i time (position, knife plate whereabouts of the roll setting of i=1～N) be as Yi, then Yi=ma-mb-cc-L * i/N.

Therefore, work as i=N, that is, in N time the moment in plane knife plate 160 whereabouts, (with reference to Figure 29 (b) (3)) expired in cutting of the buttonhole 93 of the linearity that just is through with.

But, work as N=0, that is, there is no need the buttonhole of linearity in the wings side cut when full, then do not calculate Yi.

Below, the situation that forms the buttonhole 92 of band circle eye with ladder knife plate 167 is described with Figure 29 (c).

At first, for form circle eye 90 on cloth, the position, knife plate whereabouts when at first ladder knife plate 167 being descended is the Y=0 that aforesaid assigned position at cloth forms round eye 90.At this moment, shown in Figure 30 (C), 167 of ladder knife plates and circle eye with cutting knife member 101 closures, not with straight line with cutting knife member 102 closures, only form circle eye 90.

Then, following calculating is used for line part 91 is calculated by following formula the position, knife plate whereabouts of only cutting full length L (with reference to Figure 29 (c) (2)～(4)) of side in the wings.Between (2)～(4) of Figure 29 (c), shown in Figure 30 (D), circle eye falls down with cutting knife member 101,167 of ladder knife plates and straight line usefulness cutting knife member 102 closures.

At first, the position, the knife plate whereabouts first time of line part 91 is mc owing to owe to cut length partly, and institute thinks Y=mc (with reference to Figure 29 (c) (2)).

Then, calculate as follows be used for 91 of line parts in the wings the length L of side cut full position, knife plate whereabouts (Figure 29 (c) (3)).That is, L=ml-lc-ma+mc, the whereabouts times N of knife plate is N=L/mb.At this moment, L/mb has remainder, and regular is N=N+1.

Then, will for line part 91 in the wings side cut full the i time (position, knife plate whereabouts of i=1～N) be as Yi, then Yi=mc-L * i/N.And, i=N, that is, in the moment that knife plate falls, Yi=-L+mc=ml-lc-ma, and cut full (Figure 29 (c) (4)) of having finished line part 91.

Simultaneously, in the above description, the same with the explanation among the embodiment 1, it is the explanation of having carried out the ideal situation of imagination for the purpose of simplifying the description, but actually, the same with embodiment 1, the setting value that the storage conversion setting content that is used for preventing owing to cut between otch and the otch is set, calculate mb is shortened the knife plate whereabouts number of times of certain-length u (for example 1mm) and mc lengthening certain-length v (for example 1mm) is calculated position, knife plate whereabouts, the otch when each time knife plate falls forms buttonhole by a certain amount of coincidence ground.

Concrete is, under the situation of the circle eye buttonhole of Figure 29 (a), the position, knife plate whereabouts in (2) is calculated with Y=mc+v, and knife plate whereabouts number of times (N) is calculated with N=L/ (mb-u).Under the situation of the straight buttonhole of Figure 29 (b), N=L/ (mb-u) only calculates with mb-u and owes to cut times N.

Be with at Figure 29 (c) under the situation of the buttonhole of justifying eye, calculate position, knife plate whereabouts in (2) with Y=mc+v, calculate the position, knife plate whereabouts (Yi) of (3) later knife plate whereabouts number of times (N) and the i time with N=L/ (mb-u), L=ml-lc-ma+mc+v, Yi=mc+v-L * i/N.

Below, the situation that only forms circle eye 90 is described according to Figure 29 (d).At this moment, shown in Figure 30 (C), 167 of ladder knife plates and circle eye be not with cutting knife member 101 closures, contact with cutting knife member 102 with straight line.

At this moment, for form circle eye 90 on cloth, at the state that at first ladder knife plate 167 is descended, as mentioned above, the position, knife plate whereabouts that the assigned position on cloth forms round eye 90 is Y=0 (Figure 29 (d) (1)).Owing to do not cut line part 91, so leave it at that.

According to the Sewing machines 200 that possesses above cloth-cutting apparatus, be with of the rotation of circle eye with cutting knife member 101, the structure of the primary importance that circle eye cutting knife 101b is displaced into to cut cloth and the second place of yielding, simultaneously, can with cloth pushing table 14 cloth forwards, backwards direction move, so, with plane knife plate 160 time, do not change knife plate, cutting knife and just can freely change the buttonhole 92 of band circle eye, the conversion and the shearing length of straight buttonhole 94.In addition, if, then do not change knife plate, cutting knife and can form single round eye 90, the buttonhole 92 of band circle eye, straight buttonhole 94 yet, and can form the buttonhole of all lengths with ladder knife plate 167.

And, according to Sewing machines 200, owing to be according to controlling with embodiment 1 the same pattern data and control method, so it is the same with embodiment 1, can make the buttonhole 93 of line part 91 and linearity not extend to the position of making starting point and sewing finishing point clamping with the method for setting shearing length correction lc, to prevent above-mentioned poor stitching quality.

In addition, owing to can set straight buttonhole amount of bias cc, so can form the buttonhole 93 of linearity in the optional position of buttonhole stitching, and owing to can set shearing length correction lc, so can change the length of the buttonhole 93 of linearity arbitrarily, can form straight buttonhole 94 corresponding to all size.

In addition, owing to can set and can send the knife plate height by sky, so send the knife plate height if set basic the same sky highly with fabric thickness, then the ascending amount of knife plate is minimum necessary amount, just can shorten to form the required process-cycle of buttonhole.

And Sewing machines 200 relatively has following effect with the Sewing machines of embodiment 1.

1. owing to be not only to push circle eye cutting knife 101b, also to push the method for straight line cutting knife 102b simultaneously and cut off, can do straight line cutting knife 102b blade point roundly, not pull cloth so can when placing cloth, not hang than the straight line cutting knife 61b of portion of embodiment 1.And, because point of a knife is circular, thus can not reduce the cutting knife sharpness, and hang the phenomenon of pulling cloth when cutting off because of the cutting knife sharpness reduces to occur in.

Simultaneously,, as embodiment 1, do not slot, so do not need to remove the operation of residue in the groove in the knife plate side owing to be the mode of crush-cutting.

2. shown in symbol 17, be arranged on the part that head and workbench center at cloth bits path among the embodiment 1, and in embodiment 2, be located at workbench 200b side, so enlarged the workbench part under the head reclaiming the path that cloth considers to be worth doing.

3. easily the cloth of process cloth bits path 101e, 104a is considered to be worth doing the regulation place that is not collected on the base plate 103a with cloth bits protective cover 122 with not dispersing, and use aspirator 134 to attract to consider cloth to be worth doing it and reclaim.That is, even between cloth bits path 104a and pipe hub bore 131a, the path that reclaims the cloth bits has been disconnected also and can reclaim reliably.In addition, with the method that disconnects path, with base plate 103a is the boundary, even for example change the cloth bits path (with reference to variation 1) of cutter assembly 100 sides according to the yielding direction of circle eye cutting knife, same recovery structure can be become as long as change the installation site of 133 couples of pedestal 103a of pipe hub, cloth bits path can be freely set.

And, in embodiment 2, can use plane knife plate and ladder knife plate two sides as knife plate, also can use stepped cutting knife between the higher slightly and straight line cutting knife portion of circle eye cutting knife one side of portion as cutting knife.At this moment, even use the plane knife plate also can only form circle eye 90, that is, can freely form the buttonhole 92 of band circle eye, straight buttonhole 94, single circle eye 90.

The following describes the variation of embodiment 2.

＜variation 1 〉

With reference to Figure 31, Figure 32 variation 1 is described.In Figure 31, Figure 32, use same-sign, and omit its explanation with the identical member in Figure 20～22.

In the cutter assembly 300 of variation 1, replace cutting knife base component 103 with cutting knife base component 303.Cutting knife base component 303 is the same with above-mentioned cutting knife base component 103, with hold-down screw 152,152 base plate 303a is fixed on the workbench of Sewing machines 200, and form upright cutting knife supporting mass 303b in the front portion of base plate 303a, and at the top of cutting knife supporting mass 303b formation pedestal 303c, in the above, embed straight line cutting knife member 102 with embodiment 2 the samely.But the cutting knife supporting mass 303b here compares with above-mentioned cutting knife supporting mass 103b, but formed rear side short and under the width of supporting seat 303c, do not support circle eye cutting knife described later with pedestal 304.

In addition, on base plate 303a, be provided with the smooth 303d of slideway portion, be provided with gathering sill 303e along fore-and-aft direction in the central authorities of the 303d of this slideway portion.

In addition, on the 303d of slideway portion, be provided with circle eye cutting knife pedestal 304.Use above the pedestal 304 at round eye cutting knife, the same with embodiment 2, fixing circle eye cutting knife member 101, and be provided with cloth bits path 101e in circle a inboard with cutting knife member 101.Below pedestal 304, be provided with the chimeric protruding 304b chimeric at circle eye cutting knife with above-mentioned gathering sill 303e.Therefore, circle eye cutting knife can move forward and backward on slideway portion along gathering sill 303e with pedestal 304.

, be formed with and round cloth bits path 304a that is connected with the cloth bits path 101e of cutting knife member 101 with in the pedestal 304 at circle eye cutting knife.This cloth bits path 304a is different with the above-mentioned cloth bits path 104a that forms to the below of retreading, be with in front of the drawing of Figure 31 (b) to oblique below and do not form with the mode that the path that moves forward and backward of pedestal 304 overlaps with a circle cutting knife.The cloth bits that cut off with circle eye cutting knife 101b are fallen pipe hub bore 131a and are discharged to the outside by cloth bits path 101e, 304a.And,, cloth bits protective cover 306 is set as surrounds circle eye cutting knife and also be fixed on the base plate 303a with limit screw 307,307 with pedestal 304 sides corresponding to the direction of cloth bits path 304a.

The cylinder mounting plate 301 of the cylinder 310 that fixing and above-mentioned cylinder 110 is the same is fixed on by limit screw 302,302 and does not interfere circle eye cutting knife moving forward and backward and position that can the front and back adjusting with pedestal 304 above the base plate 303a.

At the front end of cylinder bar 310a, fixing the threaded threaded portion 310b of outer sidecar, this threaded portion 310b is installed in by nut 305 and is formed on the screw of justifying eye cutting knife usefulness pedestal 304 back in order to regulate front and back position.Therefore, circle eye cutting knife pedestal 304 in variation 1, move forward and backward according to haunting of cylinder bar 310a, when cylinder 310 is closed, when cylinder bar 310a protrudes out, be the state of erecting (Figure 32 (a)), when cylinder 310 is connected, when cylinder bar 310a draws in, rearward moved with pedestal 304 by threaded portion 310b pulling circle eye cutting knife.

The same with embodiment 1, use the adjustment screw 115,115 of the inside that is located at above-mentioned pedestal 303c rear portion to determine the circle eye cutting knife that is pushing with cylinder 310 to use the position in pedestal 304 the place aheads.

The cut-out action of being undertaken by the cutter assembly 300 with said structure and plane knife plate 160 (or ladder knife plate 167 also can), the same substantially with embodiment 1 described (1)～(4), unique difference is that circle eye cutting knife is made a concession in the mode of rearward directly advancing with pedestal 304.

That is, when cutting off circle eye 90, shown in Figure 32 (a), circle eye cutting knife is used pedestal 304 forwardly, and plane knife plate 160 and circle eye cutting knife 101b and straight line cutting knife 102b closure.If ladder knife plate 167, then only with a circle eye cutting knife 101b closure.At this moment the position of circle eye cutting knife 101b is a primary importance.

In addition, in the time same,,, attract to discharge with aspirator 134 again discharging with the side of pedestal 304 from circle eye cutting knife by

cloth bits path

101e, 304a because of cutting off the cloth bits that produce to joint 163,141 air supplies with embodiment 1.

When forming line part 90 or straight buttonhole 94, shown in Figure 32 (b), circle eye cutting knife allows the not position of interference plane knife plate 160 (ladder knife plate 167) Back with pedestal 304, and only uses straight line cutting knife 102b and plane knife plate 160 (ladder knife plate 167) cut-out cloth.At this moment the position of circle eye cutting knife 101b is the second place.

Even be provided with the Sewing machines of cloth-cutting apparatus with above cutter assembly 300, owing to have the structure that the circle eye cutting knife that can make fixing circle eye cutting knife 101b moves forward and backward with pedestal 304, therefore the same with the Sewing machines 200 that possesses above-mentioned cloth-cutting apparatus 201, if use plane knife plate 160 just can with each freely length form the buttonhole 92 of band circle and buttonhole 94 directly.If use ladder knife plate 167, except can with each freely length form the buttonhole 92 and straight buttonhole 94 of band circle eye, can also only form circle eye 90.

＜variation 2 〉

With reference to Figure 33 variation 2 is described.In Figure 33, to using same-sign and omit its explanation with the identical member in Figure 20～22.

The cloth-cutting apparatus 400 of variation 2 is and embodiment opposite configuration about in the of 1, at upside cutting knife 411 is set, and at downside knife plate is set.

Upside cutting knife erecting bed 410 is fixed on constitute with the same straight moving axis 40 of cutting the cloth driving mechanism of above-mentioned knife plate driving mechanism 170 on, on this cutting knife erecting bed 410, rag knife 411 is installed.Below rag knife 411, the integrally formed straight line cutting knife portion 413 that is used to form drop-shaped circle eye cutting knife portion 412 and is used to form straight line.

In the inside of cutting knife erecting bed 410, be formed with horizontal cloth bits path 410a, 410a attracts air along the arrow C direction by 418 pairs of this cloth bits of joint path.Fixing the cloth bits sliding channel 416 of the recovery cloth bits that protrude to cutting knife erecting bed 410 outsides with screw thread 417 at the front end of cloth bits path 410a.On cloth bits sliding channel 416, be provided with pipe 414, and be connected with flexible pipe 415 at the other end of pipe 414.

In the inside of cutting knife erecting bed 410, be formed with the cloth bits path 410b that is connected with cloth bits path 410a.Also there is the cloth bits path 411a that is connected with cloth bits path 410b the inside of rag knife 411, and below circle eye cutting knife portion 412 opening is arranged.

The knife plate assembly 420 of downside is made of each member that is contained on the knife plate pedestal 403.On base plate 403a, be provided with knife plate supporting mass 403b the same and the pedestal 403c the same, and shape and above-mentioned cutting knife base component 103 are basic identical with pedestal 103c with above-mentioned cutting knife supporting mass 103b.But difference is that the cloth bits are discharges below knife plate pedestal 403 in variation 2, so do not offer the hole that is used for by the cloth bits on knife plate pedestal 403a.

On pedestal 403c, fixing with above-mentioned straight line cutting knife portion 413 closures, above be formed the straight line knife plate 402 of tabular surface.This fixed structure is the same with cutting knife member 102 with straight line.In addition,, be formed with not shown rectangular-shaped recess, embed circle eye knife plate pedestal 404 at this recess in the inboard of knife plate supporting mass 403b.Circle eye knife plate is with pedestal 404, and is the same with pedestal 104 with circle eye cutting knife, can be flexibly be installed on the knife plate supporting mass 403b rotationally and under the state that applies power with spring 108 to the counter clockwise direction of Figure 33 by bolster 107.And circle eye knife plate uses pedestal 104 the same with pedestal 404 with above-mentioned circle eye cutting knife, be subjected to cylinder 110 front ends cylinder bearing pin 114 pushing and erect, and topple over because of being contained in the connecting rod 116 on the cylinder bearing pin 114 and the effect of spring 108.

With above the pedestal 404, fixing top circle eye knife plates 401 smooth and circle cutting knife portion 412 closure at round eye knife plate.This fixed structure is the same with cutting knife member 101 with the circle eye.Straight line knife plate 402 and circle eye knife plate 401 have constituted knife plate.

In the inside of circle eye knife plate, be formed with the air vertical core 404a that is used for by air with pedestal 404.Simultaneously, in the side (opposition side of the face that among Figure 33 can see) of circle eye knife plate with pedestal 404, be formed with the not shown cross-drilled hole that is connected with air vertical core 404a, gas circuit 406 is connected on this cross-drilled hole by not shown joint.In the inside of circle eye knife plate 401, be formed with and be connected with air vertical core 404a and the air vertical core 401b of 401a opening in the above.Therefore, in case from gas circuit 406 air supplies, then by air vertical core 404a, 401b, just circle eye cutting knife portion 412 injection airs upward.The cloth bits that when forming circle eye 90, produce, because of the air from air vertical core 401b ejection enters in cloth bits path 411a, 410b, the 410a, use the air that attracts from joint 418 to be sent to cloth bits sliding channel 416 again, discharge outside the Sewing machines by pipe 414, flexible pipe 415.

Move with the cut-out that the cloth-cutting apparatus 400 with said structure carries out, the same with above-mentioned plane knife plate 160, be rag knife 411 knee-actions, in addition, except circle eye knife plate 401 and above-mentioned circle eye with cutting knife member 101 similarly rotate make a concession, the same with embodiment 1 described (1)～(4).

That is, when round eye 90 that cuts off the buttonhole 92 of being with the circle eye and line part 91, be the state shown in Figure 33 (a), rag knife 411 descends, with a circle knife plate 401 and straight line knife plate 402 closures.The position of circle eye knife plate 401 at this moment is a primary importance.In addition, owing to produced the cloth bits, the cloth bits are discharged outside the Sewing machines to gas circuit 406 and joint 418 air supplies.

When forming line part 91 or straight buttonhole 94, shown in Figure 33 (b), circle eye cutting knife rotates to counterclockwise with pedestal 404 and makes a concession, and only cuts off cloth by rag knife 411 and straight line knife plate 402.The position of circle eye knife plate 401 at this moment is the second place.

Be provided with the Sewing machines of above cloth-cutting apparatus 400, also the same with the above-mentioned Sewing machines 200 that possesses cloth-cutting apparatus 201, can form the buttonhole 92 and the straight buttonhole 94 of the band circle eye of each drift.

And, if be provided with the position ladder higher of the top 401a of circle eye knife plate 401, then can form the buttonhole 92 and the straight buttonhole 94 of the band circle eye of each drift than the top 402a of straight line knife plate 402, can also only form circle eye 90.

＜variation 3 〉

With reference to Figure 34 variation 3 is described.In Figure 34, used same-sign with the identical member in Figure 20～22, and omitted its explanation.

Cutting knife base component 503 on the cutter assembly 500 of variation 3 has dull and stereotyped base plate 503a, is provided with semicircular semicircle board 503b on this base plate 503a.Fulcrum shaft 505 passes the central authorities of this semicircle board 503b, and the rotation cutting knife pedestal 504 that can be propped up by this pivot rotationally flexibly is installed on this fulcrum shaft 505.

This rotates cutting knife pedestal 504 be the middle block member that forms warpage, is the boundary with joggling part 504a, is fixing the circle eye above in the wings with cutting knife member 501, is fixing straight line cutting knife member 502 above forwardly.The fixed structure of these cutting knifes is identical with embodiment 1.

In the upper edge of circle eye, be formed with drop-shaped circle eye cutting knife 501b, and then have cloth bits path 501a within it with cutting knife member 501.On straight line is used cutting knife member 502, be formed with the straight line cutting knife 502b of linearity.

In the side of rotating cutting knife pedestal 504, fixing block 519,519 with screw 520,520, use block 519,519 definite circle eyes to use cutting knife member 502 position in the wings respectively with cutting knife member 501 and straight line.

Rotating on the cutting knife pedestal 504, be formed with the cloth bits path 504b that is connected with above-mentioned cloth bits path 501a and tilt to the back lower place.From the cloth bits that cloth bits path 504d discharges, the same with embodiment 1, by outside Sewing machines, discharging in the pipe hub bore 131a in the base plate 503a.On base plate 503a, be screwed cloth bits protective cover 508.

Below rotating cutting knife pedestal 504, be provided with the first triangular cam 504b, the second triangular cam 504c of two leg-of-mutton cams, in addition, on base plate 503a, be provided with to have and move forward and backward structure and translating cam 517a that can lean on mutually with triangular cam 504b, 504c.

Cylinder 110 usefulness cylinder screws 112,112 are fixed on limit screw 518,518 are fixed on the cylinder mounting plate 511 on the base plate 503a.On the cylinder bar 110a of cylinder 110, fixing cylinder bar fixed head 515 with hold-down screw 516.

Cylinder bar fixed head 515 from fore-and-aft direction see slightly rectangular, be formed with not shown hole on the top of its right part (top of Figure 34 (a)), in this hole, insert the braking roll 512 be fixed on the cylinder mounting plate 511.Front end in braking roll 512 is equipped with scotch 513.Extend cam fixed head 515a from the bottom of above-mentioned right part along the place ahead direction.Become one translating cam 517a with it with screw 514,514 and the cam support 517 that supports it is fixed on this cam fixed head 515a with cam.

Below, the action of the cutter assembly 500 of said structure is described.Figure 34 is under the state that cylinder bar 110a draws in, and the top edge of translating cam 517a heads on the first triangular cam 504b, and circle eye erects with cutting knife member 501 and straight line is tilt state with cutting knife member 502.At this moment, circle eye cutting knife 501b is positioned at the second place that can not cut cloth at the primary importance of cutting the cloth position, straight line cutting knife 502b.Therefore, if under this state from above the knife plate that descends, then only form circle eye 90.

When protruding cylinder bar 110a under this state, along with cylinder bar fixed head 515 advances along the guiding of braking roll 512, cam fixed head 515a also advances, and with this cam support 517 and translating cam 517a is advanced.

Translating cam 517a contact with the second triangular cam 504c, and rotates the counter clockwise direction rotation of cutting knife pedestal 504 along Figure 34 (b) because of thrust makes because of preceding and then leave from the first triangular cam 504b simultaneously.Become translating cam 517a at last and head on the second triangular cam 504c, and circle eye is toppled over cutting knife member 501 and state that straight line erects with cutting knife member 502.At this moment, straight line cutting knife 502b is the primary importance of cutting the cloth position, and circle eye cutting knife 501b is positioned at the second place that can not cut cloth.Therefore, if under this state from above the knife plate that descends, then can form line part 91 or straight buttonhole hole 94.Simultaneously, this translating cam 517a advances, and stops when cylinder bar fixed head 515 is abutted against scotch 513.

If draw in cylinder bar 110a again from this state, then move along with translating cam 517a is rearward, rotate the state that returns Figure 34 to clockwise direction on one side Yi Bian rotate cutting knife pedestal 504.

According to the Sewing machines that is provided with above cutter assembly 500, be in order to rotate cutting knife pedestal 504 make the circle eye with cutting knife member 501 and straight line with the cutting knife member 502 mutual structures that alternately are displaced between the primary importance and the second place, so except with each freely length form the buttonhole 92 and straight buttonhole 94 of band circle eye, can also only form circle eye 90.

And, in embodiment 2 and each variation, be displaced into the cutting knife of the primary importance and the second place or the yielding direction of knife plate and be not limited to fore-and-aft direction, also can be horizontal direction.In addition, the concrete mechanism that change that also can be suitable is made a concession.And the upper-lower position that also can change knife plate and cutting knife concerns.

(invention effect)

The cloth of cutting of 1 described sewing machine according to the present invention is controlled device, can be according to comprising and button The control data of the data that the length of eye is relevant and the data relevant with the buttonhole stitch length, control On sewn object, form the buttonhole of band circle eye with circle eye cutting knife section and the straight line cutting knife both sides of section. From And, if make straight line cutting knife section move and cut off successively sewn object to the rear part of line part, then Do not change cutting knife and knife plate also can change tape the length of line part of buttonhole of circle eye. In addition, if Make straight line cutting knife section move and cut off successively sewn object to the rear part of linearity buttonhole, then not Change the length that cutting knife and knife plate also can change the linearity buttonhole.

In addition, after forming the buttonhole stitching, form to connect and make starting point and sewing finishing point The door bolt line time, can with the method for setting the data relevant with buttonhole length, line part not extended Go out to make the position of starting point and sewing finishing point clamping, can prevent stitching defect with this.

The cloth of cutting of 2 described sewing machines according to the present invention is controlled device, is to obtain and the present invention 1 effect same the time, can form band circle eye with circle eye cutting knife section and straight line cutting knife section After the buttonhole, straight line cutting knife section is moved to the rear part of straight line, if according to being used for changing the band circle The data of the above-mentioned line part length of the buttonhole of eye are cut off sewn object successively, then can be according to usefulness In the data that change this line part length, the line part of the buttonhole of band circle eye is prolonged, needn't change Cutting knife and knife plate just can form the buttonhole corresponding to all size.

3 described sewing machines according to the present invention cut cloth control device, obtain with the present invention it 1 or 2 same effect the time, because setting be used to the shaping position that makes the linearity buttonhole along lock The data that buttonhole stitch length direction changes, thus can be on the optional position of buttonhole stitching shape The shape buttonhole that is in line, in addition, owing to can set data for change straight hole length, so Can change arbitrarily the length of linearity buttonhole, need not change cutting knife and knife plate and just can form correspondence Buttonhole in all size.

4 described sewing machines according to the present invention cut cloth control device, obtain with the present invention it In the time of 1 effect same, can easily specify the shape of rag knife, form with this cutting knife cloth When being with the buttonhole of circle eye, control device can easily be calculated because of circle eye cutting knife section and straight line cutting knife section Owing of not cutting off cut the sewn object of part length, and only cut full length with straight line cutting knife section, Therefore, can improve the operability that forms the buttonhole operation.

5 described sewing machines according to the present invention cut cloth control device, obtain with the present invention it In the time of 1 effect same, can set for selecting is with circle eye cutting knife section and straight line cutting knife section Both sides form at sewn object and are with round buttonhole, still only use straight line cutting knife section at sewn object The selection data of upper formation linearity buttonhole are so can easily form buttonhole or the straight line of band circle eye The shape buttonhole for example when forming the linearity buttonhole, there is no need to be replaced with corresponding to this linearity button The rag knife of the regulation of eye shape.

6 described sewing machines according to the present invention cut cloth control device, obtain with the present invention it In the time of 1 effect same, can be set on the sewn object when forming buttonhole, with move up and down So the relevant data of either party lifting height in the middle of above-mentioned rag knife or the above-mentioned knife plate are if this Data setting is and the essentially identical height of sewn object thickness, the then ascending amount of rag knife or knife plate Be minimum necessary amount, can shorten forming the required cycle of buttonhole.

7 described sewing machines according to the present invention cut cloth control device, obtain with the present invention it In the time of 1 effect same, owing to possess the change mechanism of change control data content, so can The method of change control data content forms the buttonhole corresponding to all size.

8 described inventions according to the present invention can be with above-mentioned in the middle of the rag knife of travel mechanism One of them side of circle eye cutting knife section and above-mentioned straight line cutting knife section moves to and above-mentioned knife plate closure And can cut off the primary importance of sewn object and not with the second place of above-mentioned knife plate closure. Can with this To form multiple buttonhole.

For example, when knife plate forms the flat surfaces type for circle eye knife plate section and straight line knife plate section, with moving Actuation mechanism is only during mobile circle eye cutting knife section, and circle eye cutting knife section can form band circle eye when primary importance Buttonhole can form the buttonhole (straight buttonhole) of linearity when the second place. In addition, only mobile During straight line cutting knife section, straight line cutting knife section can form the buttonhole of band circle eye during for primary importance, is second Can only form the circle eye during position and be used for doing the flower arrangement eyelet. Can shape if both sides movably talk about Become the buttonhole of band circle eye, straight buttonhole, three kinds of single round eye. Therefore, do not change rag knife Just can form various buttonholes.

15 described inventions according to the present invention can be with travel mechanism the circle eye cutter in the knife plate One of them side of board and straight line knife plate section moves to cutting off of rag knife closure and is sewn The primary importance of thing and not with the second place of rag knife closure. With this, can form various buttonhole.

For example, when rag knife is the flat surfaces type of circle eye cutting knife section and the formation of straight line cutting knife section, Only mobile circle eye knife plate section the time, when circle eye knife plate is positioned at primary importance, can form the button of band circle eye Eye can form the buttonhole (straight buttonhole) of linearity when being positioned at the second place. In addition, only moving During moving straight line knife plate, can form the buttonhole of band circle eye when the straight line knife plate is positioned at primary importance, be positioned at the Can only form the circle eye during two positions, be used for doing the flower arrangement eyelet. If both sides are removable, then can With the buttonhole that forms band circle eye, straight buttonhole, three kinds of single round eye. Therefore, need not change Knife plate just can form various buttonholes.

In addition, according to the present invention 17, except 8 or the present invention of the present invention 15 described Outside the obvious results fruit, even do not change knife plate cutter mechanism is moved on one side with respect to sewn object Moving one side is cut full and the buttonhole formation all lengths.

Claims

1. the cloth of cutting of a Sewing machines is controlled device, is set at around forming buttonhole and the buttonhole at sewn object on the sewn object to form on the Sewing machines of buttonhole stitching, and comprises cloth cut device; Described cloth cut device has the circle eye cutting knife portion of described round eye of buttonhole of the band circle eye that formation is made of circle eye and line part and the rag knife and the relative knife plate to the ground configuration with this rag knife of the straight line cutting knife portion that forms described line part;

When sewn object being cut off when described rag knife is relatively moved up and down to described knife plate, the buttonhole that on sewn object, forms band circle eye with described circle eye cutting knife portion and described straight line cutting knife two sides of portion can be controlled, and buttonhole can be controlled on the sewn object with described straight line cutting knife portion formation linearity;

Also comprise storing a plurality of storing mechanisms that are used to form the control data of described buttonhole and buttonhole stitching, it is characterized in that:

In described control data, comprise data relevant and the data relevant with the buttonhole stitch length with described buttonhole length, and according to the driving of described control data control to described cloth cut device.

2. the cloth of cutting of Sewing machines according to claim 1 is controlled device, it is characterized in that: in described control data, comprise when on sewn object, forming the buttonhole of band circle eye, be used to change the data of described line part length of the buttonhole of round of this band with described circle eye cutting knife portion and described straight line cutting knife two sides of portion.

3. the cutting knife control device of Sewing machines according to claim 1 is characterized in that:

In described control data, only comprise when on sewn object, forming the buttonhole of linearity, be used for changing the data of the buttonhole length of this linearity along the data and being used to of formation position that the length direction of buttonhole stitching changes the buttonhole of this linearity with described straight line cutting knife portion.

4. the cloth of cutting of Sewing machines according to claim 1 is controlled device, it is characterized in that:

In described control data, comprise data relevant, data relevant with described straight line cutting knife minister degree with described circle eye cutting knife minister degree and and described circle eye cutting knife portion and described straight line cutting knife portion between the relevant data of length.

5. the cloth of cutting of Sewing machines according to claim 1 is controlled device, it is characterized in that:

In described control data, comprise be used to select with described circle eye cutting knife portion and described straight line cutting knife two sides of portion at the buttonhole that forms band circle eye on the sewn object, or on sewn object, form the selection data of the buttonhole of linearity with described straight line cutting knife portion.

6. the cloth of cutting of Sewing machines according to claim 1 is controlled device, it is characterized in that:

In described control data, comprise with when on sewn object, forming buttonhole, either party relevant data of lifting height of the described rag knife that moves up and down or described knife plate.

7. the cloth of cutting of Sewing machines according to claim 1 is controlled device, it is characterized in that:

The change mechanism that possesses the described control data content of change.

8. the cloth-cutting apparatus of a Sewing machines, be set on sewn object and around buttonhole, form on the Sewing machines of buttonhole stitching in the formation buttonhole, and comprise cloth cut device and Qie Bu driving mechanism, described cloth cut device, possess: the circle eye cutting knife portion of described round eye that has the buttonhole of the band circle eye that formation is made of circle eye and line part, with the rag knife of the straight line cutting knife portion that forms described line part, and the circle eye knife plate portion that has the cutting knife portion closure of relative up and down circle that dispose to ground and described with described rag knife, with with the knife plate portion of the straight line knife plate of described straight line cutting knife portion closure; The described cloth driving mechanism of cutting, a side drives along the vertical direction in order to make described rag knife and described knife plate clutch incite somebody to action wherein;

Described cloth cut device cuts off sewn object and forms buttonhole when rag knife and knife plate are closed, it is characterized in that:

The described circle eye cutting knife portion of described at least rag knife and the side in the straight line cutting knife portion, removable in the primary importance of cut-out sewn object reaches and the inc second place of described knife plate with described knife plate closure,

And comprise for one the primary importance and the second place in described circle eye cutting knife portion that adopts and the described straight line cutting knife portion, the travel mechanism that it is moved between the primary importance and the second place.

9. the cloth-cutting apparatus of Sewing machines according to claim 8 is characterized in that:

As knife plate, plane knife plate that circle eye knife plate portion and straight line knife plate portion be formed on same horizontal plane and circle eye knife plate portion and straight line knife plate portion can be installed be formed on ladder knife plate two sides that are provided with ladder of Different Plane, and install and use a wherein side.

10. the cloth-cutting apparatus of Sewing machines according to claim 9 has a plurality of storing mechanisms that are used to form the control data of buttonhole and buttonhole stitching of storage, it is characterized in that:

In described control data, comprise be used to select with plane knife plate and rag knife form band circle eye buttonhole, with any one party of plane cutting plate or ladder knife plate only with the straight line cutting knife portion of rag knife form linearity buttonhole, form the buttonhole of band circle eye, form wherein any one the buttonhole kind selection data of round eye with ladder knife plate and round cutting knife portion with ladder knife plate and rag knife;

And having the hole of selecting data to select with described buttonhole kind in order to form, time control in accordance with regulations drives the described controlling organization of cutting cloth driving mechanism and described travel mechanism.

11. the cloth-cutting apparatus of Sewing machines according to claim 8 is characterized in that:

Circle eye cutting knife portion is fixed on circle eye cutting knife with on the pedestal, moves it between the described primary importance and the described second place with the rotation of circle eye cutting knife with pedestal.

12. the cloth-cutting apparatus of Sewing machines according to claim 8 is characterized in that:

Circle eye cutting knife portion is fixed on circle eye cutting knife with on the pedestal, moves it between the described primary importance and the described second place with the linear slide of circle eye cutting knife with pedestal.

13. the cloth-cutting apparatus of Sewing machines according to claim 8 is characterized in that:

Circle eye cutting knife portion and straight line cutting knife portion are fixed on the rag knife pedestal simultaneously, with the rotation of rag knife pedestal circle eye cutting knife portion and straight line cutting knife portion alternately are displaced between the described primary importance and the described second place.

14. the cloth-cutting apparatus of Sewing machines according to claim 8 is characterized in that:

A described circle cutting knife portion is fixed on circle eye cutting knife with on the pedestal, and along with circle eye cutting knife moves to the primary importance and the second place with the mobile of pedestal,

On the direction that does not hinder circle eye cutting knife portion to move, be formed with from circle eye cutting knife portion and circle eye cutting knife with the inboard of pedestal towards outside, be used to reclaim when circle eye cutting knife portion and circle eye knife plate portion closure, form the cloth bits path of the circle eye shape cloth bits that circle at the moment produces at sewn object, the cloth bits of discharging by cloth bits path are discharged to and are connected with aspirator and not with in described cloth is considered the pipe that path is connected to be worth doing.

15. the cloth-cutting apparatus of a Sewing machines, be set on sewn object and around buttonhole, form on the Sewing machines of buttonhole stitching in the formation buttonhole, and comprise cloth cut device and Qie Bu driving mechanism, described cloth cut device, possess: the circle eye cutting knife portion of described round eye that has the buttonhole of the band circle eye that formation is made of circle eye and line part, with the rag knife of the straight line cutting knife portion that forms described line part, and the circle eye knife plate portion that has the cutting knife portion closure of relative up and down circle that dispose to ground and described with described rag knife, with with the knife plate of the straight line knife plate portion of described straight line cutting knife portion closure; The described cloth driving mechanism of cutting, a side drives along the vertical direction in order to make described rag knife and described knife plate clutch incite somebody to action wherein;

One side of the described at least circle eye knife plate portion of described knife plate and described straight line knife plate portion, be movable to described rag knife closed also can the primary importance of sewn object cut-out and not with the second place of described rag knife closure,

And comprise for one the primary importance and the second place in described circle eye knife plate portion that adopts and the described straight line knife plate portion, move it the travel mechanism between the primary importance and the second place.

16. the cloth-cutting apparatus of Sewing machines according to claim 15 is characterized in that:

Circle eye knife plate portion is fixed on circle eye knife plate with on the pedestal, moves it between the described primary importance and the described second place with the rotation of circle eye knife plate with pedestal.

17. according to Claim 8 or the cloth-cutting apparatus of 15 described Sewing machiness, it is characterized in that:

Be provided with described cloth cut device with respect to sewn object, along and be formed at the relative moving mechanism that the parallel direction of line part of the buttonhole of the described band circle eye on the sewn object moves.