CN1782162A

CN1782162A - Sewing machine fabric cutting device

Info

Publication number: CN1782162A
Application number: CNA200510128764XA
Authority: CN
Inventors: 村井健二
Original assignee: Juki Corp
Current assignee: Juki Corp
Priority date: 1999-12-13
Filing date: 2000-12-12
Publication date: 2006-06-07
Anticipated expiration: 2020-12-12
Also published as: DE10066308B4; CN1409781A; CN1800477B; DE10066326B4; DE10085290B4; CN1800477A; CZ20021944A3; CN1782164B; CN1782163B; CN1782161A; DE10066327B4; WO2001042550A1; CN1782164A; CN1782163A; JP4336471B2; DE10066324B4; CN1257324C; CN1782161B; CZ304739B6; CN1782162B

Abstract

A sewing machine fabric cutting device capable of forming eyelet holes of various lengths and linear holes without changing a knife and a knife receiver. A sewing machine fabric cutting device (1) provided in a sewing machine (100) for forming button holes in a sewing object (200) and linking the peripheries of the button holes, and provided with a knife (5) for cutting the sewing object (200) in order to form button holes, wherein the knife (5) is provided with an eyelet knife portion (54) for forming an eyelet portion (202) of an eyelet hole (201), out of button holes, consisting of an eyelet portion (202) and a linear portion (203), and a linear knife portion (55) for forming a linear slit capable of serving as the linear portion (203) of the eyelet hole (201). When the linear knife portion (55) and the eyelet knife portion (54) of the knife (5) are integrally moved toward the sewing object (200) to cut the sewing object (200), the eyelet knife portion (54) is disposed above the linear knife portion (55) so that the linear knife portion (55) cuts first followed by the eyelet knife portion (54).

Description

The cloth-cutting apparatus of Sewing machines

The application is the dividing an application of application for a patent for invention of application number " 00817093.2 ", the applying date " on December 12nd, 2000 ", denomination of invention " cloth-cutting apparatus of Sewing machines ".

Technical field

The present invention relates to the cloth-cutting apparatus of Sewing machines, this device is arranged on the Sewing machines that carries out overseam (eyelet), and forms the hole as buttonhole on cloth.

Background technology

As everyone knows, a kind of circle eye buttonhole overseam Sewing machines is arranged, it is gone up on the part of the buttonhole that forms at cloth (article of being made) as Sewing machines, carries out overseam.This Sewing machines has when carrying out overseam, forms the cloth-cutting apparatus of buttonhole simultaneously on cloth, and before overseam or behind the overseam, in the inboard of overseam part, forms buttonhole (circle eye buttonhole).

This circle eye buttonhole overseam Sewing machines has at the needle bar that has sewing-needle on the bottom, make needle bar that this needle bar moves up and down up and down driving mechanism, make the wiggly swing mechanism of this needle bar and be configured in running-on mechanism on the downside of needle bar, it is when moving up and down needle bar, by vacillating now to the left, now to the right to each pin, with the binding-off machine co-operating, carry out overseam.

Also have, cutting knife and cutting knife that aforementioned cloth-cutting apparatus has subtend setting up and down bear thing, bear between the thing at this cutting knife and cutting knife, are accompanying the state of material to be sewn, move towards the opposing party by making cutting knife and cutting knife bear in the thing either party.Cloth is cut off, form circle eye buttonhole.Because buttonhole is to be formed by connecting near the hole of circular shape (dripping shape) (circle eye portion) hole (straight line portion) with linearity, therefore, the columniform blade that is roughly that will form the circle eye portion that is shaped as of cutting knife is formed by connecting at grade with the blade that forms straight line portion, by being that smooth cutting knife bears thing pushing to the part that contacts with cutting knife, almost cut off circle eye portion and straight line portion simultaneously, form circle eye buttonhole.

But because the kind of clothes and be positioned at clothes on the position of buttonhole different, a circle eye buttonhole has different shapes, therefore, when forming difform circle buttonhole, must change cutting knife basically and cutting knife bears thing.Therefore, when the different circle eye buttonhole of the length of the straight line portion that just forms circle eye buttonhole, also need to carry out the replacing that cutting knife and cutting knife bear thing, so take time and energy.

Also have,,, can form so-called flower arrangement eyelet by only being the hole of straight line portion by this circle eye buttonhole overseam Sewing machines, in this occasion, must will be used for a circle buttonhole cut that the cloth cutting knife changes the eyelet that is used to arrange flowers into cut the cloth cutting knife.

Have again, on general upper garment, will form as the circle eye buttonhole of buttonhole and the flower arrangement eyelet both who is made on the collar.

Therefore, purpose of the present invention is for providing a kind of cloth-cutting apparatus of Sewing machines, and it needn't change cutting knife and cutting knife bears thing, just can form long circle eye buttonhole and rectilinear flower arrangement eyelet.

Summary of the invention

In order to address the above problem, according to an aspect of the present invention, the cloth-cutting apparatus 1 of this Sewing machines has cuts cloth cutting knife 5, this is cut the cloth cutting knife and cuts off the article of being made 200, so that form the buttonhole of forming by circle eye portion 202 and straight line portion 203 (for example circle eye buttonhole 201), it is characterized by, aforementionedly cut the straight line cutting knife part 55 that the cloth cutting knife has the hole of the circle eye cutting knife part 54 in the hole that forms circle eye (circle) shape and formation rectilinear form, by the aforementioned cloth cutting knife of cutting, when cutting off the article of being made, can both be being formed circle buttonhole on the article made from circle eye cutting knife part and straight line cutting knife part, simultaneously, can make a circle cutting knife part inoperative, only on the quilt article of making, form the hole of linearity with straight line cutting knife part to the article of being made.

, form circle eye buttonhole herein, can also can after carrying out overseam, form being undertaken forming before the overseam by on the article made from cutting knife.

As mentioned above, according to the present invention, after partly forming circle eye buttonhole with circle eye cutting knife part and straight line cutting knife, because by on the straight line portion of circle eye buttonhole, form the hole of rectilinear form continuously with straight line cutting knife part, can prolong the straight line portion of circle eye buttonhole, event needn't change cutting knife and cutting knife bears thing, just can form the different circle eye buttonhole of length of straight line portion.

Also have,, then can form the not flower arrangement eyelet of the rectilinear form of round eye portion if only partly form buttonhole with the straight line cutting knife.That is to say, can not change cutting knife and cutting knife bears thing and forms circle eye buttonhole and flower arrangement eyelet, also have,, just can change that cutting knife and cutting knife bear thing and the length that changes the flower arrangement eyelet if form buttonhole by the repeatedly cut-out of straight line cutting knife part.

In the cloth-cutting apparatus of aforementioned Sewing machines, be preferably in to be provided with between aforementioned circle eye cutting knife part of cutting the cloth cutting knife and the straight line cutting knife part and do not cut off the part of the article of being made.

Cloth-cutting apparatus according to the Sewing machines of formation like this, then do not cut off the part of the article of being made by between circle eye cutting knife part and straight line cutting knife part, being provided with, just can as following, not produce the part of not cutting off of round eye portion, form the hole of rectilinear form simultaneously neatly.

Also have, be not configured in occasion in the same plane in circle eye cutting knife part and straight line cutting knife part, cut the cloth cutting knife for what partly be formed on the round eye portion of circle eye buttonhole and state cut-out that straight line portion connects together with circle eye cutting knife part and straight line cutting knife, then for example be in the position in the end of a side of circle eye cutting knife part of the straight line cutting knife part of below, to to correctly cooperate with the position of the end of a side of the straight line cutting knife portion of the circle eye cutting knife part of top, must there be coincidence slightly its end simultaneously, thereby be difficult to form and cut the cloth cutting knife, the cost of cutting the cloth cutting knife is improved.On the other hand,, can easily make and cut the cloth cutting knife, and cut cloth cutting knife cost related and descend significantly being formed on the occasion of cutting the cloth cutting knife that has the part of not cutting off the article of being made between circle eye cutting knife part and the straight line cutting knife part.

Also have, in the cloth-cutting apparatus of aforementioned Sewing machines, preferably aforementioned circle eye cutting knife partly is configured in the top of aforementioned straight line cutting knife part, so that an aforementioned aforementioned straight line cutting knife part and an aforementioned circle article that the cutting knife part is made to quilt integratedly of cutting the cloth cutting knife are moved, with when cutting off the article that this quilt makes, at first being that aforementioned straight line cutting knife partly cuts off the article of being made, is that aforementioned circle eye cutting knife partly cuts off the article of being made then.

According to the cloth-cutting apparatus of the Sewing machines of formation like this, then certain that arrives time between straight line cutting knife part and the circle eye cutting knife part at the article of being made a bit stops to cut moving of cloth cutting knife part, just can easily only form the hole of linearity.That is to say, employing will be justified the so-called open-and-shut structure that a cutting knife partly is configured in the top of straight line cutting knife part, just might both be being formed circle eye buttonholes on the article made from circle eye cutting knife part and straight line cutting knife part, simultaneously, can only on the quilt article of making, form the hole of linearity, reach action effect same as described above with straight line cutting knife part.

Also have, in the occasion of so constructing, i.e. layout circle eye cutting knife part above straight line cutting knife part, so that when cutting off cloth, before the cut-out of circle eye cutting knife part, carry out the cut-out of straight line cutting knife part, if cutting knife being born the part of bearing circle eye cutting knife of thing is configured in in the one side with the part of bearing the straight line cutting knife, then since certain when straight line cutting knife part and cutting knife bear thing and contact a bit, can not move the cutting knife more than it, so the straight line cutting knife for example preferably shape is made the cloth that can will be in the state of pressing plate pressurization cut into as cutting knife and cutter etc., for example the blade of straight line cutting knife part is preferably not parallel with the material to be sewn that must cut off, but becomes inclination.Also have, the part that the cutting knife that bears straight line cutting knife part bears thing preferably has the ditch that the straight line cutting knife is partly inserted.

Also have, according to another aspect of the present invention, the cloth-cutting apparatus 1 of Sewing machines has cuts cloth cutting knife 5 and operating mechanism 2, this cuts the straight line cutting knife part 55 that the cloth cutting knife has the circle eye cutting knife part 54 in the hole that forms circle eye shape and dispose and form the hole of linearity isolator below aforementioned circle eye cutting knife part

This operating mechanism is lifting to the first down position and second down position selectively, at this first down position, aforementioned straight line cutting knife part from lifting position drop to the article 200 made above, at this second down position, aforementioned circle eye cutting knife part partly drops on the article of being made with the straight line cutting knife

It is characterized by, can selectively form straight line buttonhole and circle eye buttonhole.

Like this, according to the present invention, can easily change the shutheight of cutting the cloth cutting knife.Therefore, easily switch the formation in the hole of the formation of circle eye buttonhole and rectilinear form, with the simple structure that needn't change rag knife, just can be selectively in the hole that is formed a circle buttonhole and linearity on the article of making.

Also have, according to the 3rd aspect of the present invention, being characterized as of the cloth-cutting apparatus 1 of Sewing machines, it has cuts cloth cutting knife 5, operating mechanism 2 and controlling organization, this cuts the straight line cutting knife part 55 that the cloth cutting knife has the circle eye cutting knife part 54 in the hole that forms circle eye shape and dispose and form the hole of linearity isolator below aforementioned circle eye cutting knife part

This controlling organization control operation mechanism with when the decline of beginning, drops to second down position with the aforementioned cloth cutting knife of cutting, and during afterwards decline, drops to first down position.

As mentioned above, according to the present invention, can after forming circle eye buttonhole, form the hole of linearity.Therefore, before dropping to first down position,, the straight line portion of circle eye buttonhole is prolonged, and justify the cut-out of the part of failing to cut off of a buttonhole by with material to be sewn or cut the cloth cutting knife and move on the optional position.

Also have, according to the 4th aspect of the present invention, being characterized as of the cloth-cutting apparatus 1 of Sewing machines, it has cuts cloth cutting knife 5, operating mechanism 2, travel mechanism and controlling organization, this cuts the straight line cutting knife part 55 that the cloth cutting knife has the circle eye cutting knife part 54 in the hole that forms circle eye shape and dispose and form the hole of linearity isolator below aforementioned circle eye cutting knife part

This travel mechanism makes the article of being made move to the arranged direction of two cutting knife parts,

This controlling organization control aforementioned operation mechanism and travel mechanism, and the aforementioned cloth cutting knife of cutting is being dropped to second down position, and forming after the hole of circle eye shape and rectilinear form, the article that will be made move a predetermined length, then, the aforementioned cloth cutting knife of cutting is dropped to first down position.

According to the present invention, after forming circle eye buttonhole, can on the precalculated position of the article of being made, form the hole of linearity.Therefore, by moving the article of being made, so that the straight line cutting knife partly descends, and when dropping to second down position, with the preceding end in contact of a side opposite, just can change rag knife and freely prolong the straight line portion of justifying the eye buttonhole with a side of the round eye portion of the straight line portion of formed circle eye buttonhole.Also have, if make the part of failing to cut off fully move to the below of straight line cutting knife part by travel mechanism, just can form does not have the not circle eye buttonhole of cut-off parts.

In the cloth-cutting apparatus of aforementioned Sewing machines, the direction and the distance that descend in the hole of mobile preferably straight line cutting knife part by given length of the aforementioned article of being made with respect to circle eye shape.

According to the cloth-cutting apparatus of the Sewing machines of structure like this, can in the circle eye portion, form the hole of rectilinear form.Thus, straight line cutting knife part can be cut off by the circle eye cutting knife part of cutting the cloth cutting knife and the round eye portion that the straight line cutting knife partly forms and the bonding part of straight line portion, can form the round buttonhole that round eye portion and straight line portion link together effectively.

Also have, in the cloth-cutting apparatus of aforementioned Sewing machines, make after the aforementioned article of being made move by given length, preferably repeatedly carry out the aforementioned activities that descends to aforementioned first down position.

According to the cloth-cutting apparatus of the Sewing machines of structure like this, can form the hole of a plurality of rectilinear forms.Therefore, for example move the article of being made by the direction that partly prolongs straight line portion along the straight line cutting knife, just can change rag knife, pressing arbitrarily, length freely prolongs the straight line portion of justifying the eye buttonhole.

Have again, in the cloth-cutting apparatus of aforementioned Sewing machines, the direction and the distance that straight line cutting knife part preferably can form the hole of rectilinear form continuously that move by given length of the aforementioned article of being made.

According to the as above cloth-cutting apparatus of Sewing machines of structure, can freely prolong the straight line portion of justifying a buttonhole by length arbitrarily.

Also have, in the cloth-cutting apparatus of aforementioned Sewing machines, mobile being preferably in by given length of the aforementioned article of being made makes in the decline of aforementioned first down position repeatedly, and having decline once at least is direction and the distance that descends in the hole of straight line cutting knife part with respect to circle eye buttonhole shape.

Cloth-cutting apparatus according to the Sewing machines of structure like this, owing in the circle eye portion, form the hole of rectilinear form, if so the straight line cutting knife is partly made the length that can reach round eye portion and straight line portion engaging portion, then the hole of circle eye shape and the hole of rectilinear form just can couple together fully.Also have,, also can cut off the inside of round eye portion fully even the article that the quilt that cuts off is made are the cloth that is difficult to cut off.

Also have, according to the 5th aspect of the present invention, being characterized as of the cloth-cutting apparatus 1 of Sewing machines, it has cuts cloth cutting knife 5, operating mechanism, travel mechanism and controlling organization, this cuts the straight line cutting knife part 55 that the cloth cutting knife has the circle eye cutting knife part 54 in the hole that forms circle eye shape and dispose and form the hole of linearity isolator below aforementioned circle eye cutting knife part

This controlling organization control aforementioned operation mechanism and travel mechanism, and moving the aforementioned article of being made by given length, the aforementioned cloth cutting knife of cutting is dropped to first down position and forms after the hole of rectilinear form, return the article of being made by the share of aforementioned given length, after this, the aforementioned cloth cutting knife of cutting is dropped on second down position.

According to the present invention, after forming the hole of linearity, just can with roughly the same position, the hole of linearity on form a circle buttonhole.That is to say, because before forming circle eye buttonhole, partly cut off the article of being made with the straight line cutting knife in advance, therefore, even by the article made be the occasion of the cloth that is difficult to cut off, also can cut off the inside of round eye portion fully, justify the shaping of eye portion neatly with circle eye cutting knife part simultaneously, this cloth that is difficult to cut off is at least one side of warp or parallel, with have fortifying fibre formation that high-intensity fiber for example is entwined by helical form with high-intensity fiber around Kepler's fiber and general fiber.

According to the cloth-cutting apparatus of the Sewing machines of structure like this, can on the position in the hole that forms circle eye shape, be pre-formed the hole of rectilinear form.Therefore, can cut off the cloth that is difficult to cut off reliably, can form buttonhole neatly with circle eye cutting knife part.

Description of drawings

Fig. 1 will be for will justify a diagrammatic side view that the part of buttonhole overseam Sewing machines is cutd open, and this Sewing machines has adopted as the cloth-cutting apparatus that adopts the first embodiment of the present invention.

Fig. 2 is the vertical view of signal, and it cuts open the part of the circle eye buttonhole overseam Sewing machines among Fig. 1.

Fig. 3 is the front view of signal, and it cuts open the part of the circle eye buttonhole overseam Sewing machines among Fig. 1.

Fig. 4 is the diagrammatic elevation view of the part of sensor, and it illustrates the mounting structure of the sensor that is used to detect the position of cutting the cloth cutting knife.

Fig. 5 is the rearview of signal, and it cuts open the part of the circle eye buttonhole overseam Sewing machines among Fig. 1.

Fig. 6 illustrates cutting knife and cutting knife bears the figure of the structure of thing, (a) bears the front view of thing for cutting knife and cutting knife, (b) side view of looking for the straight line cutting knife part side of bearing thing from cutting knife and cutting knife.

Fig. 7 is the vertical view of circle eye buttonhole, and it illustrates the shape of the circle eye buttonhole after the formation.

Fig. 8 is a flow chart, and its explanation adopts the cloth-cutting apparatus among first embodiment being formed first method of bore portion on the article of making.

Fig. 9 is a flow chart, and it illustrates the continuation of Fig. 8.

Figure 10 is a flow chart, and its explanation adopts the cloth-cutting apparatus among first embodiment being formed second method of bore portion on the article of making.

Figure 11 is a flow chart, and it illustrates the continuation of Figure 10.

Figure 12 is the round eye portion of circle eye buttonhole and the vertical view of straight line portion, and it illustrates with the round eye portion of cutting knife formation and the shape of straight line portion.

Figure 13 is the perspective illustration of cutting knife part, and it illustrates when the straight line portion prolongation that will justify the eye buttonhole, the state of straight line portion and straight line cutting knife.

Figure 14 will be for will justify a diagrammatic side view that the part of buttonhole overseam Sewing machines is cutd open, and this Sewing machines has adopted as the cloth-cutting apparatus that adopts the second embodiment of the present invention.

Figure 15 is the vertical view of signal, and it cuts open the part of the circle eye buttonhole overseam Sewing machines among Figure 14.

Figure 16 is the front view of signal, and it cuts open the part of the circle eye buttonhole overseam Sewing machines among Figure 14.

Figure 17 is the rearview of signal, and it cuts open the part of the circle eye buttonhole overseam Sewing machines among Figure 14.

Figure 18 is a flow chart, and its explanation adopts the cloth-cutting apparatus among second embodiment being formed third party's method of bore portion on the article of making.

Figure 19 is a flow chart, and it illustrates the continuation of Figure 18.

Figure 20 is a flow chart, and its explanation adopts the cloth-cutting apparatus among second embodiment being formed the cubic method of bore portion on the article of making.

Figure 21 is a flow chart, and it illustrates the continuation of Figure 20.

The specific embodiment

The embodiment of the cloth-cutting apparatus of the Sewing machines relevant with the present invention is described below with reference to the accompanying drawings.

＜the first embodiment 〉

Cloth-cutting apparatus 1 is arranged on the body of circle eye buttonhole overseam Sewing machines 100, this Sewing machines is roughly had the fuselage part 101 of the article of being made 200 by side mounting thereon, be in the socle part 102 of the state of upwards standing from this fuselage part 101, the arm 103 of the extend longitudinally of part constitutes from this socle part 102 along fuselage above fuselage part 101, this cloth-cutting apparatus 1 is roughly by the cutting knife 5 that cuts off cloth, the cutting knife that bears this cutting knife when cutting off bears thing 6, the operating mechanism 2 and the not shown control device (controlling organization) that drive cutting knife 5 in order to cut off the article of being made 200 up and down constitute, and this control device control comprises the action of the Sewing machines of the cloth carrying device (travel mechanism) of the article 200 that not shown conveyance made and cloth-cutting apparatus.

In addition, as shown in Figure 7, in this routine Sewing machines 100, form by the straight line portion 203 of round eye portion 202 that is roughly a shape and linearity incision at the circle eye buttonhole 201 that is formed on the article of making 200.

The cloth carrying device, just so-called well-known cloth-feeding device, in circle eye buttonhole overseam Sewing machines 100, have cloth pushing table and cloth feeding mechanism etc., this cloth pushing table is in the article that mounting is made, press the article of being made 200 with pressing plate, this cloth feeding mechanism moves this cloth pushing table along the direction of X-axis line and the direction of Y-axis line in the plane of approximate horizontal.Then, the state that the article 200 usefulness pressing plates of being made at quilt are set on cloth pushing table, by the cloth carrying device article of being made 200 are moved, so that pin with respect to by the position of the article made corresponding to relatively moving around the part that becomes circle eye buttonhole 201, around circle eye buttonhole 201, carry out overseam.And, in the present invention, not only when overseam, even when forming circle eye buttonhole 201, described as the back, though the cloth carrying device is made the article of being made 200 are moved, structurally identical with well-known cloth carrying device.Also have, the cloth carrying device also can be not only the moving of rectilinear direction of combination X-axis line direction and Y-axis line direction, but also does moving along a aspect that circular arc moves.

Also have, the motor of cloth carrying device is rotating by pulse signal control, a given angle of revolution is only rotated in its each pulse, and the setting of passing through this cloth carrying device of material to be sewn 200 amount of movements can be undertaken by the umber of pulse of setting above-mentioned motor.

The relevant structure that is used to drive the operating mechanism 2 of cutting knife 5 is described herein.Shown in Fig. 1～5, operating mechanism 2 roughly is made of motor 21, ball-screw 24, linkage 31, driving shaft 35, driven wheel 39 and linear axis 40.

Motor 21 is fixed on the fuselage part 101 of circle eye buttonhole overseam Sewing machines 100, and the driving force of motor 21 reaches the ball-screw gear 23 of adjacency by motor gear 22.This ball-screw gear 23 is made on the ball-screw 24 that is installed in approximate vertical, by the driving of motor 21, makes ball-screw 24 revolutions.But the bearing 25 that ball-screw 24 usefulness are contained on the fuselage 101 is being justified on the eye buttonhole overseam Sewing machines 100 with bearing unit 26 free rotaring ground supportings that are contained on the arm 103.

On this ball-screw 24, ball nut 27 is set, this ball nut 27 is made and can be moved up and down along ball-screw 24 along with the rotation of ball-screw 24.Also have, on the top of ball nut 27, fix a casing 28, this casing 28, moves up and down along ball-screw 24 by the revolution of ball-screw 24 also with ball nut 27.

As shown in Figure 5, in casing 28, be fixed with light metal (LM) guide rail 29, by insert the axis of guide 30 in this light metal guide rail 29, casing 28 and ball nut 27 can not move up and down rotatably.

As Fig. 1 and shown in Figure 5, an end of linkage 31 rotatably is fixed on two sides of casing 28 by

pitman shaft

32a, 32a, and the other end then rotatably is fixed on the end of lever 34 by pitman shaft 32b, 32b.33 for being used to the nut that prevents that pitman shaft 32b is pulled out.

As shown in Figure 2, but driving shaft 35

usefulness supporting members

36,36,36,36 and arm 103 almost parallel ground and free rotary ground supporting are and further fixedly fixing by the C font ring 37 and thrust washer 38 front and back at two ends on arm 103.Also have, but driving shaft 35 is with the other end free rotary ground supporting of aforementioned lever 34 side in its socle part 102.Have again, on driving shaft 35, with driving shaft 35 lever female part 35a is installed integratedly and rotatably, simultaneously, the part of this lever female part also leans against on the lever 34, and lever 34 is being driven by aforementioned link mechanism 31, and be fulcrum revolution with driving shaft 35, make when the distolateral decline of one, then lever female part 35a is pressed downward, thereby make gyroaxis 35 revolutions by lever 34.

Also have, on a side opposite of driving shaft 35, have driven wheel 39 with socle part 102.

As shown in Figure 3, this driven wheel 39 and tooth bar 41 engagements that form on the top of straight moving axis 40, then revolution of driving shaft 35 simultaneously, moves up and down straight moving axis 40 by revolution.

Straight moving axis 40 is accommodated in to become substantially in the columnar straight dynamic bearing lining tile 42, this lining tile is fixed on the arm 103 with can adjusting horizontal level, and cut out a breach in driven wheel 39 these sides, be provided with the ditch portion 43,43 that extends in parallel along length direction with straight dynamic bearing lining tile 24 in two places of the inner face of this straight dynamic bearing lining tile 42, in this ditch portion, chimeric two local projections 44,44 that are provided with that have in the outside of straight moving axis 40, this projection can move freely along ditch portion 43,43, they can slide up and down, but can not left rotation and right rotation.

Also have, the lower end at straight moving axis 40 is provided with cutting knife erecting bed 51, on this cutting knife erecting bed 51, by clamp 52 and clamp screw 53 cutting knife 5 is installed.Also have, cutting knife erecting bed 51 is mounted to and can vertically adjusts the position with respect to arm 103.Have again, on the fuselage part 101 under the cutting knife 5, cutting knife be set bear thing pedestal 61, and with the relative position of cutting knife 5 on, cutting knife is installed is born thing 6.

Also have, as shown in Figures 1 and 2, the plate 45 of joint-cutting is installed on driving shaft 35, this plate is used to detect origin position (straight moving axis (cutting knife 5) is the position of rising upwards) and the off-position (can use the position of straight line cutting

knife part

55 and 54 both cut-outs of circle eye cutting knife part) from the close slightly straight moving axis 40 in centre of driving shaft 35, on arm 103, install respectively by

sensor installing plate

48,48 and to be used to the sensor 47 (referring to Fig. 4) that detects the sensor 46 of origin position and be used to detect off-position.For example by detecting the state that plate 45 that joint-cutting is arranged covers and not detected by the variation of the state of its covering, cutting knife 5 is at origin position or in off-position to sensor as aforementioned 46,47.Also have, the shape of plate 45 that joint-cutting is arranged is corresponding to determining in the origin position of cutting knife 5 angle of revolution with the driving shaft on the off-position 35.

Below, the method that moves cutting knife 5 with the operating mechanism 2 that as above constitutes is described.At first, drive motor 21.In case motor 21 is driven, then ball-screw 24 rotates by motor gear 22, ball-screw gear 23, and ball nut 27 on the ball-screw 24 and casing 28 descend on ball-screw 24.Thus, the linkage 31 that is connected on the casing 28 by pitman shaft 32a also descends, and an end that is connected the lever 34 on the linkage 31 with pitman shaft 32b is pressed down by past along the clockwise direction among Fig. 5.And then lever 34 passes through lever female part 35a along the clockwise direction rotating driveshaft 35 among Fig. 5.

In case driving shaft 35 rotations, be arranged on driven wheel 39 on the driving shaft 35 with driving shaft 35, rotate along the counter clockwise direction among Fig. 3, the tooth bar 41 and the straight moving axis 40 that have with driven wheel 39 engagements are descended, the cutting knife 5 that is arranged on the lower end of straight moving axis 40 also descends, and cuts off the article of being made 200.

Also have, this motor 21 is also controlled its revolution by pulse signal, and only by each pulse given angle of revolution rotation.Have again, on this motor 21, be connected with not shown aforementioned control device, near this control device sensor 47 with detecting off-position is connected, and in the circle eye cutting knife part 54 of cutting knife 5 and straight line cutting knife part 55 both can both cut off the second place of the article of being made 200, the driving of control motor 21, to stop the decline of cutting knife 5, simultaneously, umber of pulse control slippage by control motor 21, and the driving of control motor 21, can cut off the primary importance of the article of being made 200, can stop the decline of cutting knife 5 in the straight line cutting knife part 55 of having only cutting knife 5.

After cutting off, make motor 21 counter-rotatings, by being moved upward ball nut 27 and casing 28 rotating levers 34, and the pressurization of the lever 34 of releasing lever female part 35a, then, make driving shaft along the revolution of the counter clockwise direction among the figure, and driven wheel 39 is rotated along the clockwise direction among Fig. 3 owing to pass through the elastic force pressure of spring 35b shown in Figure 2, so straight moving axis 40 rises, cutting knife 5 separates with the article of being made 200.

Below, illustrate that with Fig. 6 cutting knife 5 and cutting knife bear the shape of thing 6.

Shown in Fig. 6 (a), cutting knife 5 is made of with the straight line cutting knife part 55 that forms straight line portion 203 the circle eye cutting knife part 54 that forms circle eye portion 202, and straight line cutting knife part 55 usefulness screws 56 are fixed on the circle eye cutting knife part 54.Straight line cutting knife part 55 is outstanding towards the direction (below) that relative cutting knife bears thing 6 from circle eye cutting knife part 54, and its knife edge part makes its end in a side of circle eye cutting knife part 54 become the shape of the inclination more outstanding than the other end.In contrast, cutting knife bears thing 6 in a side relative with straight line cutting knife part 55, the slot part 62 (referring to Fig. 6 (b)) that can insert straight line cutting knife part 55 is arranged, and, a planar section 63 that contacts with circle eye cutting knife part 54 is arranged then in a side relative with circle eye cutting knife part 54.A circle eye cutting knife part 54 that is to say that the degree of depth of slot part 62 will be made darker to the length of the front end of the knife edge part of circle eye cutting knife part 54 than the front end from the knife edge part of straight line cutting knife part 55, so that can contact with planar section 63.Also have, between straight line cutting knife part 55 and circle eye cutting knife part 54, be provided with at interval, thus, between straight line portion 203 and circle eye portion 202, produce the part of not cutting off.

Also have, the shortest equal in length of the straight line portion 203 of the length of straight line cutting knife part 55 and the necessary circle eye buttonhole 201 that forms still also can be made than its weak point.

Also have, circle eye cutting knife part 54 can have the shape that only cuts out the circle eye, but attached shape with rectilinear edge on the circle eye also can be arranged.

Have, pipe shown in Fig. 6 (a) 64 is the air discharge pipe of the cloth bits that are used to reclaim generation when forming circle eye portion 202 again.

Have again, as mentioned above, because straight line cutting knife part 55 is to be fixed on the circle eye cutting knife part 54 with screw 56, so can make straight line cutting knife part 55 fixing and take off with respect to circle eye cutting knife part 54, form only be the buttonhole 201 of the different circle eye shape of the length of straight line portion 203 when, can needn't prolong straight line portion 203 as described later, but also can carry out by changing straight line cutting knife part 55.Also have, in the occasion of freely fixing and taking off straight line cutting knife part 55 with respect to circle eye cutting knife part 54, in order to make the state that connects together from the beginning with circle eye cutting knife part 54 round eye portion 202 that forms and the straight line portioies 203 that form with straight line cutting knife part 55, though the shape need to circle eye cutting knife part 54 and straight line cutting knife part 55 has high precision, simultaneously, installation on circle eye cutting knife part 54 also requires high precision to straight line cutting knife part 55, but, as described later, if the part of not cutting off is set between circle eye portion 202 and straight line portion 203, and cut off afterwards, then just make circle eye cutting knife part 54 and straight line cutting knife part 55 with comparalive ease.

Also have, the cutting knife of fuselage part 101 bear thing 6 near, above-mentioned well-known cloth carrying device (omitting among the figure) is set, this carrying device makes the article of being made 200 along being moved by the straight line portion 203 that forms on the article of making 200.

This cloth carrying device can make the article 200 made along straight line portion 203 towards circle eye cutting knife part 54 these sides and oppose side shifting, and move to the occasion of circle eye cutting knife part 54 these sides at the article 200 that will be made, become the straight line prolongation mechanism that will justify straight line portion 203 prolongations of a buttonhole 201 with operating mechanism 2 simultaneously as described later, and towards with the occasion of the opposition side shifting of circle eye cutting knife part 54, then become the mechanism that cuts off again that is connected between the round eye portion 202 that will justify a buttonhole 201 simultaneously as described later with operating mechanism 2 and the straight line portion 203.

Have, straight line portion prolongs operating mechanism 2 in mechanism and the shut-off mechanism again for cutting knife 5 being dropped to the mechanism of primary importance again.

The cloth-cutting apparatus of using the operating mechanism 2, cutting knife 5 and the cutting knife that have as above to bear thing 6 with flowchart text is being formed the method for hole portion on the article of making 200.

" first method "

Fig. 8 and Fig. 9 are flow chart, and their explanations are in the operation of first method that is formed circle eye buttonhole 201 on the article of making 200.D in this flow chart, F, L ₁, L ₂, a is shown in Fig. 6, D illustrates from lower end to the cutting knife of the circle eye cutting knife part 54 that is configured in cutting knife 5 on the initial point and bears distance above the thing 6, F illustrates the lower end of justifying eye cutting knife part 54 of the cutting knife 5 on being configured in initial point to the distance above the article of being made 200, L ₁The total length of cutting knife 5 is shown, L ₂The length of the straight line cutting knife part 55 of cutting knife 5 is shown, and a illustrates from the distance of lower end to the lower end of straight line cutting knife part 55 of circle eye cutting knife part 54.Also have, as shown in figure 13, α is the length of the overlapping part of the straight line portion 203 that cut off and straight line cutting knife part 55.

Also have amount of movement S, the S of the article 200 that the quilt in this flow chart is made ₁, S ₂Slippage D with cutting knife 5 ₂The above-mentioned umber of pulse of the motor by setting the cloth carrying device or the motor 21 of operating mechanism 2 decides.

The article 200 that configuration is made on the fuselage part 101 of Sewing machines 100, the formation action (step J1) in beginning hole, the information of the setting that preestablishes and store in the storage facility according to the controlling organization that illustrates is in the drawings made the judgement (step J2) that (back cutting) still carries out the formation in hole (cutting earlier) earlier earlier.Formerly Qie Ge occasion moves the article of being made 200 (step J6) by cloth carrying device Chao Qiebu position.On the other hand, in the occasion of back cutting,,, make (step J4) so the article of being made 200 move (step J3) by the cloth carrying device towards sewing position owing to before forming the hole, make.Then, finish (step J5) afterwards making, the article of being made 200 move (step J6) by cloth carrying device Chao Qiebu position.During this period, the straight moving axis 40 that cutting knife 5 is set in the lower end stops by the state of (origin position) above rising to.

Then, the decline (step J7) of beginning cutting knife 5, whether a circle cutting knife 54 of judging cutting knife 5 bears thing 6 with cutting knife contacts, and whether sensor 47 is ON (step J8).At sensor 47 is not the occasion of ON, just continues the decline of cutting knife 5, until becoming ON (opening).If sensor 47 is ON (opening), cutting knife 5 is risen (step J9), cutting knife rises, and is ON (step J10) until sensor 46.By above action, because cutting knife 5 declines, until the second place, so, form circle eye portion 202 and straight line portioies 203 with circle eye cutting knife part 54 and straight line cutting knife part 55 by in the article of making 200.

Owing to the part of not cutting off is arranged, between formed round eye portion 202 and straight line portion 203 so then carry out the cut-out of this part of not cutting off.

At first, by the cloth carrying device, the article of being made (step J11) are moved in "+" direction feeding in Figure 12, and will justify the part of not cutting off between eye portion 202 and the straight line portion 203 remain on straight line cutting knife part 55 under, the article 200 that the quilt of this moment is made can be by at (L ₁-L ₂)-L _e/ ₂＜S≤L ₁-L ₂Scope in the amount of feeding S of feeding will justify the not part of cut-out between eye portion 202 and the straight line portion 203 remain on straight line cutting knife part 55 under.Also has the maximum L of amount of feeding S ₁-L ₂Be supposition L ₁＜2L ₂The time maximum.

Then, by operating mechanism 2, decline cutting knife 5 is until primary importance (step J12).Want the umber of pulse of the motor 21 of setting operation mechanism 2, so that the slippage D of the cutting knife 5 of this moment ₂Be (D-a)＞D ₂＞F, thus, cutting knife 5 drops to primary importance, only cuts off the article of being made 200 with straight line cutting knife part 55.Herein, in the decline of cutting knife 5, the direction that is descending is as "-" direction.

After cutting knife 5 descends, begin the rising (step J13) of cutting knife 5 once more, rising to sensor 46 becomes (step J14) till the ON, makes cutting knife be back to initial point.

By above action, by straight line cutting knife part 55, be cut off by linearity between circle eye portion 202 and the straight line portion 203, form the circle eye buttonhole 201 that circle eye portion 202 and straight line portion 203 couple together.

Then, carry out the length L of formed circle eye buttonhole 201 ₁Whether satisfy the judgement (step J15) of essential length L o.In length L ₁For the occasion of essential length L o (is not Lo＞L ₁Occasion), the formation of circle eye buttonhole 201 is finished, justify earlier a buttonhole around overseam (making) (back cutting) still do not carry out the judgement (step J16) of (cutting earlier).Qie Ge occasion formerly, the article of being made 200 move (step J17) by the cloth carrying device towards sewing position, make (step J18), this make finish after (step J19), (step J20) finished in the formation of circle eye buttonhole 201.Also have,, finish, so (step J21) also finished in the formation of circle eye buttonhole 201 owing to make (overseam) in the occasion of back cutting.

On the other hand, in length L ₁Do not satisfy occasion (Lo＞L of essential length L o ₁Occasion), justify the prolongation of the straight line portion 203 of a buttonhole 201.

Obtain when reaching essential length L o the feed rate n={ (Lo-L that passes through the cloth carrying device of the article of being made 200 ₁)/(L ₂-α) }-N, and judge that whether feed rate n is at (step J22) below 1.Herein, N is for by feeding number of times (N=1,2,3 of the article made ...), it is each numerical value that amounts to when the article 200 that feeding is made.

Also have, L-α is the given amount of feeding, is the length L from straight line cutting knife part 55 ₂Deduct above-mentioned overlapping amount α, feed rate n is by deduct the total length L of cutting knife 5 from essential shearing length Lo ₁Value divided by aforementioned given amount of feeding L ₂-α and obtain give number of times, deduct at this moment again between the times N of feeding try to achieve.

At feed rate n greater than 1 occasion, at material to be sewn 200 by cloth transport mechanism feeding amount of feeding S only ₁={ (Lo-L ₁)+N * (L ₂-α) } ("-" direction in Figure 12, { (Lo-L ₁)+N * (L ₂-α) }) (step J23) afterwards, by operating mechanism 2 cutting knife 5 is descended, until slippage D ₂Be (D ₁-a)＞D ₂＞F (step J24).By this step J24, cutting knife 5 drops to primary importance, only partly cuts the article of being made 200 with the straight line cutting knife, just can be roughly the prolongation of the straight line portion about straight line cutting knife length partly.After this, the rising (step J25) of beginning cutting knife 5 is back to sensor 46 with cutting knife 5 and is the initial point of ON (step J26).

Above action proceed to feed rate n be below 1 till.

Less than 1 occasion, the article of being made 200 are by cloth transport mechanism feeding amount of feeding S only at feed rate n ₂=-n * (L ₂-α) ("-" direction in Figure 12, n * (L ₂-α)) (step J27), by operating mechanism 2 cutting knife 5 is descended, until slippage D ₂Be (D-a)＞D ₂＞F (to primary importance) (step J28).Thus, 5 article of being made with 55 cut-outs of straight line cutting knife part 200 of cutting knife just can carry out the prolongation of the length straight line portion shorter than the length of straight line cutting knife part 55.After this, cutting knife 5 is risen (step J29), return cutting knife 5 to sensor 46 and be the origin position of ON (step J30).

By above action, there is the cut-out of the circle eye buttonhole 201 of essential length to finish, the overseam (making) on every side (back cutting) of justifying a buttonhole does not earlier still carry out the judgement (step J31) of (cutting earlier).Qie Ge occasion formerly, the article of being made 200 move (step J32) by the cloth carrying device towards sewing position, make (step J33), this make finish after (step J34), (step J35) finished in the formation of circle eye buttonhole 201.Also have,, finish, so (step J36) also finished in the formation of circle eye buttonhole 201 owing to make (overseam) in the occasion of back cutting.

" second method "

Figure 10 and Figure 11 are flow chart, and their explanations are at the operation of second method that is formed circle eye buttonhole 201 on the article of making 200, the D in this flow chart, F, L ₁, L ₂, a, L _eFor shown in Fig. 6 and Figure 12, D illustrates from lower end to the cutting knife of the circle eye cutting knife part 54 that is configured in cutting knife 5 on the initial point and bears distance above the thing 6, F illustrates the lower end of justifying eye cutting knife part 54 of the cutting knife 5 on being configured in initial point to the distance above the article of being made 200, L ₁The total length of cutting knife 5 is shown, L ₂The length of the straight line cutting knife part 55 of cutting knife 5 is shown, and Le illustrates the length of the circle eye cutting knife part 54 of cutting knife 5, and a illustrates from the distance of lower end to straight line cutting knife part 55 lower ends of circle eye cutting knife part 54.Also have, as shown in figure 13, α is the length of the overlapping part of the straight line portion 203 that cut off and straight line cutting knife part 55.

At first, identical with first method, the article 200 that configuration is made on the fuselage part 101 of Sewing machines 100, and the formation action (step J40) in beginning hole, the information of the setting that preestablishes and store in the storage facility according to unshowned controlling organization is in the drawings carried out the still judgement (step J41) of back cutting of cutting earlier.Formerly Qie Ge occasion moves the article of being made 200 (step J45) by cloth carrying device Chao Qiebu position.Occasion in back cutting at first moves the article of being made 200 (step J42) by the cloth carrying device towards sewing position, makes (step J43), finishes (step J44) afterwards making, and moves (step J45) by cloth carrying device Chao Qiebu position.During this period, cutting knife 5 stops by the state that rises to top (origin position).

Then, move material to be sewn (step J46) by the cloth carrying device towards "+" direction feeding among Figure 12.At this moment, get the amount of feeding S of the article of being made 200 at (L ₁-L ₂)-Le/2＜S≤L ₁-L ₂Scope in, thus, the article 200 that mobile quilt is made, make the round eye portion 202 that in the operation of back, forms and the part between the straight line portion 203 under the straight line cutting knife part 55 of cutting knife 5, and straight line cutting knife part 55 is not then given prominence to from the round eye portion 202 of later formation in the end of a side of circle eye cutting knife part 54.Also has the maximum L of amount of feeding S ₁-L ₂Be supposition L ₁＜2L ₂The time maximum.

Then, by operating mechanism 2, cutting knife 5 is dropped to primary importance (slippage D ₂) (step J47) afterwards, rising cutting knife 5 (step J48).The rising of cutting knife 5 proceeds to sensor 46 for till the ON (step J49), and cutting knife 5 is back to initial point.The slippage D of cutting knife 5 ₂Set for and make (D-a)＞D ₂＞F, thus, cutting knife 5 drops to primary importance, only the article of being made with 55 cuttings of straight line cutting knife part 200.In addition, in the decline of cutting knife 5, the direction that makes decline is "-" direction.

By above action, the article of being made 200 cut off the contact portions of round eye portion 202 and straight line portion 203 earlier before cutting off round eye portion 202 of formation and straight line portion 203.

The article 200 that will be made be back to once more cut the cloth position after (step J50), decline cutting knife 5 (step J51).The decline of cutting knife 5 proceeds to cutting knife 5 and drops to the second place, and the circle eye cutting knife part 54 of cutting knife 5 is born thing 6 with cutting knife and contacted, and sensor 47 is ON (step J52).After this, rising cutting knife 5 (step J53) stops (step J54) during for ON at sensor 46.

By above action, circle eye portion 202 is cut off formation simultaneously with straight line portion 203, forms the circle eye buttonhole 201 that circle eye portion 202 and straight line portion 203 couple together.

Then, carry out the length L of formed circle eye buttonhole 201 ₁Whether satisfy the judgement (step J55) of essential length L o.In length L ₁For the occasion of essential length L o (is not Lo＞L ₁Occasion), the formation of circle eye buttonhole 201 is finished, justify earlier a buttonhole around overseam (making) (back cutting) still do not carry out the judgement (step J56) of (cutting earlier).Qie Ge occasion formerly, the article of being made 200 move (step J57) by the cloth carrying device towards sewing position, make (step J58), make finish after (step J59), (step J60) finished in the formation of circle eye buttonhole 201.Also have,, finish, so (step J61) also finished in the formation of circle eye buttonhole 201 owing to make (overseam) in the occasion of back cutting.

Obtain when reaching essential length L o the feed rate n={ (Lo-L that passes through the cloth carrying device of the article of being made 200 ₁)/(L ₂-α) }-N, and judge that whether feed rate n is at (step J62) below 1.Herein, N is for by feeding number of times (N=1,2,3 of the article made ...), it is each numerical value that amounts to when the article 200 that feeding is made.

At feed rate n greater than 1 occasion, at the article of being made 200 by cloth transport mechanism feeding amount of feeding S only ₁={ (Lo-L ₁)+N * (L ₂-α) } ("-" direction in Figure 12, { (Lo-L ₁)+N * (L ₂-α) }) (step J63) afterwards, by operating mechanism 2 cutting knife 5 is descended, until slippage D ₂Be (D ₁-a)＞D ₂＞F (step J64).By this step J64, cutting knife 5 drops to primary importance, only the article of being made with 55 cuttings of straight line cutting knife part 200, the just straight line portion 203 of prolongation circle eye buttonhole 201.After this, the rising (step J65) of beginning cutting knife 5 rises to sensor 46 and is ON (opening) (step J66).

Above action proceed to feed rate n be below 1 till.

Less than 1 occasion, the article of being made 200 are by cloth transport mechanism feeding amount of feeding S only at feed rate n ₂=-n * (L ₂-α) ("-" direction in Figure 12, n * (L ₂-α)) (step J67), by operating mechanism 2 cutting knife 5 is descended, until slippage D ₂Be (D-a)＞D ₂＞F (to primary importance) (step J68).Thus, can carry out the prolongation of the length straight line portion shorter than the length of straight line cutting knife part 55.After this, cutting knife 5 is risen (step J69), return cutting knife 5 to sensor 46 and be the origin position of ON (step J70).

By above action, there is the cut-out of the circle eye buttonhole 201 of essential length to finish, the overseam (making) on every side (back cutting) of justifying a buttonhole does not earlier still carry out the judgement (step J71) of (cutting earlier).Qie Ge occasion formerly, the article of being made 200 move (step J72) by the cloth carrying device towards sewing position, make (step J73), make finish after (step J74), (step J75) finished in the formation of circle eye buttonhole 201.Also have,, finish, so (step J76) also finished in the formation of circle eye buttonhole 201 owing to make (overseam) in the occasion of back cutting.

Also have, in the present embodiment, the employing total length is L ₁Cutting knife 5, then can only form length L o is Lo 〉=L ₁A circle eye buttonhole.Be stranded this, in above-mentioned first method or second method, the available short cutting knife of total length than circle eye buttonhole of the formation of circle eye buttonhole carries out.

In addition, not that circle eye buttonhole 201 but the occasion of the flower arrangement eyelet (parallel hole) that only forms with the hole of linearity will not drop to the second place by cutting knife 5, but only drop to primary importance forming, form the linearity hole.The hole of this linearity is not when satisfying essential length, identical with the prolongation method of the straight line portion 203 of circle eye buttonhole 201 in first method and second method, adopt the cloth carrying device, move the article of being made 200 along the hole of linearity, with the end in the hole of linearity be configured in straight line cutting knife part 55 under the end of a side of circle eye cutting knife part 54, by operating mechanism 2 cutting knife 5 is dropped to primary importance.This operation also can be carried out repeatedly, reaches essential length until the hole of linearity.

Also have, do not satisfy the occasion (feed rate n is less than 1) of the length of straight line cutting knife part 55 at the extending length of straight line portion 203, because the blade of straight line cutting knife part 55 is to make inclination as mentioned above, so the slippage that can regulate cutting knife 5, undertaken by regulating the penetraction depth of cutting off the straight line cutting knife part 55 when the article of being made 200.

Have, in first method, straight line portion 203 is connected with circle eye portion 202, and the prolongation of straight line portion 203 again, and any one advanced provisional capital is passable.

Also have, as mentioned above, in the occasion of cutting off repeatedly in order to make a bore portion, when each the cut-out, will not move to origin position by cutting knife, but can be by detecting near the sensor 47 of off-position, the cutting knife that only rises, the position that the article 200 that 55 arrival of straight line cutting knife part are made from quilt are fully extracted.

＜the second embodiment 〉

Cloth-cutting apparatus in the present embodiment is removed beyond the sensor mechanism that moves of control cutting knife, all is identical with cloth-cutting apparatus among first embodiment, in Figure 14～Figure 17, owing to adopted the symbol identical with Fig. 1～Fig. 3 and Fig. 5, so its explanation is saved.

The sensor mechanism that moves of the control cutting knife in the present embodiment is arranged in the casing 28 and socle part 102 that makes the operating mechanism 2 that cutting knife 5 moves up and down.

As Figure 15 and shown in Figure 17, in casing 28, the plate 49 of joint-cutting is installed, on socle part 102, the sensor 50 that is used to detect origin position 10 is installed.Sensor as aforementioned 50, the state that covers as the plate 49 that joint-cutting is arranged by test example and not by the variation of the state of its covering, whether detection cutting knife 5 is in origin position.In case drive motor 21, just the plate that joint-cutting is arranged 49 of while mobile box 28 and covering sensor 50 makes it not covering sensor 50.The point of setting these plate that joint-cutting is arranged 49 covering sensors 50 is an origin position, after, just control moving up and down of cutting knife 5 by the umber of pulse of motor 21.

Also have,,, in the present embodiment, then when cutting the cloth action, carrying out by cloth-cutting apparatus 1 beginning is a series of though also can carry out the lifting of cutting knife 5 by the detection of this sensor 50 and the initial point of the plate 49 that joint-cutting is arranged.

Formed the method for bore portion with flowchart text on the article of making 200 with the cloth-cutting apparatus that has above such sensor mechanism.

" third party's method "

Figure 18 and Figure 19 are flow chart, and their explanations are in the operation of the third party's method that is formed circle eye buttonhole 201 on the article of making 200.D in this flow chart, F, L ₁, L _z, a is shown in Fig. 6, D illustrates from lower end to the cutting knife of the circle eye cutting knife part 54 that is configured in cutting knife 5 on the initial point and bears distance above the thing 6, F illustrates the lower end of justifying eye cutting knife part 54 of the cutting knife 5 on being configured in initial point to the distance above the article of being made 200, L ₁The total length of cutting knife 5 is shown, L ₂The length of the straight line cutting knife part 55 of cutting knife 5 is shown, and a illustrates from the distance of lower end to straight line cutting knife part 55 lower ends of circle eye cutting knife part 54.Also have, as shown in figure 13, α is the length of the overlapping part of the straight line portion 203 that cut off and straight line cutting knife part 55.

Also have amount of movement S, the S of the article 200 that the quilt in this flow chart is made ₁, S ₂Rising and slippage D with cutting knife 5 ₁, D ₂The above-mentioned umber of pulse of the motor by setting the cloth carrying device or the motor 21 of operating mechanism 2 decides.

The article 200 that configuration is made on the fuselage part 101 of Sewing machines 100, the formation action (step J101) in beginning hole, preestablish and store the information of setting in the storage facility according to unshowned controlling organization in the drawings, carry out the still judgement (step J102) of back cutting of cutting earlier.Formerly Qie Ge occasion moves the article of being made 200 (step J106) by cloth carrying device Chao Qiebu position.On the other hand, in the occasion of back cutting,,, make (step J104) so the article of being made 200 move (step J103) by the cloth carrying device towards sewing position owing to before forming the hole, make.Then, finish (step J105) afterwards making, the article of being made 200 move (step J106) by cloth carrying device Chao Qiebu position.During this period, cutting knife 5 stops by the state that rises to top (origin position).

Then, cutting knife 5 is dropped to straight line cutting knife part 55 and cut off the second place (slippage D) (step J107) of the article of being made 200 with circle eye cutting knife part 54.After this, cutting knife 5 is risen (step J108), cutting knife 5 and the article of being made 200 are separated.At this moment, the rising D of cutting knife 5 ₁At 0＜D ₁In the scope of＜F-a.By above action,, form circle eyelet part 202 and straight line portion 203 with circle eye cutting knife part 54 and straight line cutting knife part 55 by in the article of making 200.In addition, cutting knife 5 moves with descent direction as "-" direction.

Owing to the part of not cutting off is arranged, between formed round eye portion 202 and straight line portion 203 so then will carry out the cut-out of this part of not cutting off.

At first, by the cloth carrying device, the article of being made (step J109) are moved in "+" direction feeding in Figure 12, and will justify not cut-off parts between eye portion 202 and the straight line portion 203 remain on straight line cutting knife part 55 under.The article 200 that the quilt of this moment is made can pass through at (L ₁-L ₂)-Le/ ₂＜S≤L ₁-L ₂Scope in the amount of feeding S of feeding will justify the not part of cut-out between eye portion 202 and the straight line portion 203 remain on straight line cutting knife part 55 under.Also has the maximum L of amount of feeding S ₁-L ₂Be supposition L ₁＜2L ₂The time maximum.

Then, by operating mechanism 2, decline cutting knife 5 is until primary importance (step J110).Want the umber of pulse of the motor 21 of setting operation mechanism 2, so that the slippage D of the cutting knife 5 of this moment ₂Be (D-a)＞D ₂＞F, thus, cutting knife 5 drops to primary importance, only cuts off the article of being made 200 with straight line cutting knife part 55.

After cutting knife 5 descends, make cutting knife 5 rise once more (step J111).The ascending amount D of the cutting knife 5 of this moment ₁Be 0＜D ₁＜F-a thus, can extract straight line cutting knife part 55 from the article of being made 200.

Then, carry out the length L of formed circle eye buttonhole 201 ₁Whether satisfy the judgement (step J112) of essential length L o.In length L ₁For the occasion of essential length L o (is not Lo＞L ₁Occasion), the formation of circle eye buttonhole 201 is finished, justify earlier a buttonhole around overseam (making) (back cutting) still do not carry out the judgement (step J113) of (cutting earlier).Qie Ge occasion formerly, the article of being made 200 move (step J114) by the cloth carrying device towards sewing position, make (step J115), make finish after (step J116), (step J117) finished in the formation of circle eye buttonhole 201.Also have,, finish, so (step J118) also finished in the formation of circle eye buttonhole 201 owing to make (overseam) in the occasion of back cutting.

Obtain when reaching essential length L o the feed rate n={ (Lo-L that passes through the cloth carrying device of the article of being made 200 ₁)/(L ₂-α) }-N, and judge that whether feed rate n is at (step J119) below 1.Herein, N is for by feeding number of times (N=1,2,3 of the article 200 made ...), it is each numerical value that amounts to when the article 200 that feeding is made.

At feed rate n greater than 1 occasion, at material to be sewn 200 by cloth transport mechanism feeding amount of feeding S only ₁={ (Lo-L ₁)+N * (L ₂-α) } ("-" direction in Figure 12, { (Lo-L ₁)+N * (L ₂-α) }) (step J120) afterwards, by operating mechanism 2 cutting knife 5 is descended, until slippage D ₂Be (D-a)＞D ₂＞F (step J121).By this step J121, cutting knife 5 drops to primary importance, and only the article of being made with 55 cuttings of straight line cutting knife part 200 can be roughly the prolongation of the straight line portion about straight line cutting knife length partly.After this, only by 0＜D ₁The ascending amount D of＜F-a ₁Rising cutting knife 5 (step J122)

It is below 1 that above action proceeds to feed rate n.

Less than 1 occasion, the article of being made 200 are by cloth transport mechanism feeding amount of feeding S only at feed rate n ₂=-n * (L ₂-α) ("-" direction in Figure 12, n * (L ₂-α)) (step J123), by operating mechanism 2 cutting knife 5 is descended, until slippage D ₂Be (D-a)＞D ₂＞F (to primary importance) (step J124).Thus, 5 article of being made with 55 cut-outs of straight line cutting knife part 200 of cutting knife can carry out the prolongation of the length straight line portion shorter than the length of straight line cutting knife part 55.After this, rising cutting knife 5 (step J125) is extracted cutting knife 5 from the article of being made 200.The ascending amount D of the cutting knife 5 of this moment is arranged again ₁Be set at D ₁＜F.

By above action, there is the cut-out of the circle eye buttonhole 201 of essential length to finish, after this, the overseam (making) on every side (back cutting) of justifying a buttonhole does not earlier still carry out the judgement (step J126) of (cutting earlier).Qie Ge occasion formerly, the article of being made 200 move (step J127) by the cloth carrying device towards sewing position, make (step J128), make finish after (step J129), (step J130) finished in the formation of circle eye buttonhole 201.Also have,, finish, so (step J131) also finished in the formation of circle eye buttonhole 201 owing to make (overseam) in the occasion of back cutting.

" cubic method "

Figure 20 and Figure 21 are flow chart, and their explanations are at the operation of the cubic method that is formed circle eye buttonhole 201 on the article of making 200, the D in this flow chart, F, L ₁, L ₂, a, Le also be shown in Fig. 6 and Figure 12, D illustrate from lower end to the cutting knife of the circle eye cutting knife part 54 that is configured in cutting knife 5 on the initial point bear thing 6 above distance, F illustrates the lower end of justifying eye cutting knife part 54 of the cutting knife 5 on being configured in initial point to the distance above the article of being made 200, L ₁The total length of cutting knife 5 is shown, L ₂The length of the straight line cutting knife part 55 of cutting knife 5 is shown, and Le illustrates the length of the circle eye cutting knife part 54 of cutting knife 5, and a illustrates from the distance of lower end to straight line cutting knife part 55 lower ends of circle eye cutting knife part 54.Also have, as shown in figure 13, α is the length of the overlapping part of the straight line portion 203 that cut off and straight line cutting knife part 55.

At first, the article 200 identical with third party's method, that configuration is made on the fuselage part 101 of Sewing machines 100, and the formation action (step J140) in beginning hole, according to the information of in controlling organization, setting, carry out the still judgement (step J141) of back cutting of cutting earlier.Formerly Qie Ge occasion moves the article of being made 200 (step J145) by cloth carrying device Chao Qiebu position.Occasion in the back cutting, at first move the article of being made 200 (step J142) towards sewing position by the cloth carrying device, make (step J143), finish (step J144) afterwards making, move (step J145) by cloth carrying device Chao Qiebu position.During this period, cutting knife 5 stops by the state that rises to top (origin position).

Then, move material to be sewn (step J146) by the cloth carrying device towards "+" direction feeding among Figure 12.At this moment, get the amount of feeding S of the article of being made 200 at (L ₁-L ₂)-Le/2＜S≤L ₁-L ₂Scope in, thus, the article 200 that mobile quilt is made, make the round eye portion 202 that in the operation of back, forms and the part between the straight line portion 203 under the straight line cutting knife part 55 of cutting knife 5, and straight line cutting knife part 55 in the end of a side of circle eye cutting knife part 54, then do not give prominence to from the round eye portion 202 of later formation.Also has the maximum L of amount of feeding S ₁-L ₂Be supposition L ₁＜2L ₂The time maximum.

Then, make cutting knife 5 drop to primary importance (slippage D by operating mechanism 2 ₂) (step J147) afterwards, make cutting knife 5 rising (ascending amount D ₁) (step J148).The slippage D of cutting knife 5 ₂Be set at (D-a)＞D ₂＞F, thus, cutting knife 5 drops to primary importance, only the article of being made with 55 cuttings of straight line cutting knife part 200.Also has ascending amount D ₁Be set at 0＜D ₁＜F-a.Have, the mobile of cutting knife 5 is "-" direction with descent direction again.

The article 200 that will be made be back to once more cut the cloth position after (step J149), make cutting knife 5 descend (step J150).At this moment, the slippage that makes cutting knife 5 is D, and cutting knife 5 is dropped to the second place.After this, make 5 of cutting knifes with ascending amount D ₁(0＜D ₁＜F-a) rise (step J151), once more cutting knife 5 is extracted from the article of being made 200.

By above action, circle eye portion 202 is cut off simultaneously with straight line portion 203, forms the circle eye buttonhole 201 that circle eye portion 202 and straight line portion 203 couple together.

Then, carry out the length L of formed circle eye buttonhole 201 ₁Whether satisfy the judgement (step J152) of essential length L o.In length L ₁For the occasion of essential length L o (is not Lo＞L ₁Occasion), the formation of circle eye buttonhole 201 is finished, and carries out the still judgement (step J153) of cutting earlier of back cutting.Qie Ge occasion formerly, the article of being made 200 move (step J154) by the cloth carrying device towards sewing position, make (step J155), make finish after (step J156), (step J157) finished in the formation of circle eye buttonhole 201.Also have,, finish, so (step J158) also finished in the formation of circle eye buttonhole 201 owing to make (overseam) in the occasion of back cutting.

Obtain when reaching essential length L o the feed rate n={ (Lo-L that passes through the cloth carrying device of the article of being made 200 ₁)/(L ₂-α) }-N, and judge that whether feed rate n is at (step J159) below 1.Herein, N is for by feeding number of times (N=1,2,3 of the article made ...), it is each numerical value that amounts to when the article that feeding is made.

At feed rate n greater than 1 occasion, at the article of being made 200 by cloth transport mechanism feeding amount of feeding S only ₁={ (Lo-L ₁)+N * (L ₂-α) } ("-" direction in Figure 12, { (Lo-L ₁)+N * (L ₂-α) }) (step J160) afterwards, by operating mechanism 2 cutting knife 5 is descended, until slippage D ₂Be (D ₁-a)＞D ₂＞F (step J161).By this step J161, cutting knife 5 drops to primary importance, only cuts the article of being made 200 with straight line cutting knife part 55, prolongs the straight line portion 203 of circle eye buttonhole 201.After this, rising cutting knife 5 makes ascending amount D ₁Be 0＜D ₁＜F-a (step J162).

Carrying out above action, is below 1 until n.

Less than 1 occasion, the article of being made 200 are by cloth transport mechanism feeding amount of feeding S only at feed rate n ₂=-n * (L ₂-α) ("-" direction in Figure 12, n * (L ₂-α)) (step J163), by operating mechanism 2 cutting knife 5 is descended, until slippage D ₂Be (D-a)＞D ₂＞F (to primary importance) (step J164).Thus, can carry out the prolongation of the length straight line portion shorter than the length of straight line cutting knife part 55.After this, rising cutting knife 5 makes ascending amount D ₁Be D ₁＜F (step J165) makes cutting knife 5 separate with the article of being made 200.

By above action, there is the cut-out of the circle eye buttonhole 201 of essential length to finish, the overseam (making) on every side (back cutting) of justifying a buttonhole does not earlier still carry out the judgement (step J166) of (cutting earlier).Qie Ge occasion formerly, the article of being made 200 move (step J167) by the cloth carrying device towards sewing position, make (step J168), this make finish after (step J169), (step J170) finished in the formation of circle eye buttonhole 201.Also have,, finish, so (step J171) also finished in the formation of circle eye buttonhole 201 owing to make (overseam) in the occasion of back cutting.

Also have, in the present embodiment, the employing total length is L ₁Cutting knife 5, then can only form length L o is Lo 〉=L ₁A circle eye buttonhole.Therefore, in above-mentioned third party's method or cubic method, the available short cutting knife of total length than circle eye buttonhole of the formation of circle eye buttonhole carries out.

In addition, not circle eye the buttonhole 201 but occasion of the flower arrangement eyelet that only forms with the hole of linearity only forms the just hole of linearity with dropping to primary importance forming.The hole of this linearity is not when satisfying essential length, identical during with the straight line portion 203 of prolongation in third party's method and cubic method circle eye buttonhole 201, adopt the cloth carrying device, move the article of being made 200 along the hole of linearity, with the end in the hole of linearity be configured in straight line cutting knife part 55 under the end of a side of circle eye cutting knife part 54, by operating mechanism 2 cutting knife 5 is dropped to primary importance.This operation also can be carried out repeatedly, reaches essential length until the linearity hole.

Also have, do not satisfy the occasion (feed rate n is less than 1) of the length of straight line cutting knife part 55 at the extending length of straight line portion 203, because the blade of straight line cutting knife part 55 is to make inclination as mentioned above, so the slippage that also can regulate cutting knife 5, undertaken by regulating the penetraction depth of cutting off the straight line cutting knife part 55 when the article of being made 200.

Have, in third party's method, straight line portion 203 is connected with circle eye portion 202, and the prolongation of straight line portion 203 again, and any one advanced provisional capital is passable.

Like this, cloth-cutting apparatus according to the Sewing machines of the foregoing description, partly constitute cutting knife 5 with straight line cutting knife part 55 and circle eye cutting knife, since by make straight line cutting knife part 55 circle eye cutting knife part 54 bear thing 6 towards cutting knife this be side-prominent, can form the parallel hole of circle eye buttonhole 201 and linearity to cutting knife with one, so can save the trouble of changing cutting knife.

Because the straight line portion that has by cloth carrying device and operating mechanism 2 prolongs mechanism, form a different circle buttonhole 201 and the parallel holes of length of straight line portion 203 so can not change that cutting knife bears thing 6.Also have, owing to have shut-off mechanism again, so the part of failing once to cut off that can cut off between round eye portion 202 and the straight line portion 203 etc. by cloth carrying device and operating mechanism 2.

Have again,, can accomplish, promptly use circle eye cutting knife part 54 can not cut off round eye portion 202 fully, also can make button pass through circle eye buttonhole by cut off the inside of circle eye buttonhole 202 with straight line cutting knife part 55.

Also have, by making the edge tilted of straight line portion 55, make it to cut off easily the article of being made 200, simultaneously, by adjusting the slippage of cutting knife 5, the length that makes it straight line cutting knife part 55 can once be cut off shortens.

Have again, because by the

sensor

46,47,50 of the position of detecting cutting knife 5 simultaneously is set, one side can stop cutting knife 5 in position with the amount of movement of the umber of pulse control cutting knife 5 of motor 21, can prevent moving especially, so the shortening of the time of making of can attempting.

Also have, because straight line cutting knife part 55 is cut off the article of being made 200 as scissors, so also be breaking at the article that quilt that the cloth etc. of spooling carbon fiber on the parallel is difficult to cut off is made easily.Therefore, as shown in second method and the cubic method,, just can easily on the article that the quilt that is difficult to cut off is made, form circle eye buttonhole 201 by before cutting off circle eye buttonhole, cutting off the article of being made 200 with straight line cutting knife part 55.Have again, even can not cut off the occasion of the article that such quilt makes, owing to cut off, so can finish task as buttonhole with straight line cutting knife part 55 with circle eye cutting knife part 54.

Also have, in above embodiment, though straight line cutting knife part partly be integral by being screwed to make with a circle eye cutting knife,, the present invention is not limited thereto, and also can form straight line cutting knife part and circle eye cutting knife part in advance.

Have again, though justify the formation of a buttonhole 201 by justifying that cutting knife part is made of one with straight line portion and descending from the top, but, also straight line cutting knife part can be made of one with planar section, replacing circle eye cutting knife part and cutting knife to bear the planar section of thing, and descend from the top.

The structure of operating mechanism can be arbitrarily, also can be the structure that can make cutting knife vertical decline from the top.

Much less, relevant other concrete detail structure etc. also can appropriate change.

As mentioned above, cloth-cutting apparatus according to the Sewing machines relevant with one aspect of the present invention, cut the cloth cutting knife and have circle eye cutting knife part that forms the circle eye portion and the straight line cutting knife part of cutting the hole that forms linearity, can partly form circle eye buttonhole with circle eye cutting knife part and straight line cutting knife, and partly form the hole of linearity with the straight line cutting knife, like this, just can not change the buttonhole of cutting the cloth cutting knife and forming circle eye buttonhole and not justifying the linearity of eye portion.Also have,, can after partly forming circle eye buttonhole, prolong the straight line portion of circle eye portion with circle eye cutting knife part and straight line cutting knife by straight line cutting knife part.

Also have, do not cut off the part of the article of being made by between circle eye cutting knife part and straight line cutting knife part, being provided with, can easily make on the one hand by what circle eye cutting knife part and straight line cutting knife were partly formed and cut the cloth cutting knife, be reduced in significantly on the one hand to make and go up spent cost.Also have, form circle eye portion and straight line portion neatly, so can make clean circle eye buttonhole owing to can distinguish.

Have again, to justify a cutting knife partly is configured to than straight line cutting knife more by last, and partly cut off the article of being made with aforementioned straight line cutting knife earlier, then, partly cut off the article of being made with aforementioned circle eye cutting knife, owing to do not use straight line cutting knife part simultaneously and,, easily only form the hole of linearity so can before partly arriving the article of being made, stop to cut moving of cloth cutting knife at circle eye cutting knife with the cut-out partly of circle eye cutting knife.

Also have, cloth-cutting apparatus according to the Sewing machines relevant with a second aspect of the present invention, by being used for the operating mechanism that Qie Bu moves cutting knife, can on any stop position of first down position and second down position, stop to cut the cloth cutting knife, at this first down position, only partly cut off the article of being made,, partly cut off the article of being made with straight line cutting knife part and circle eye cutting knife at this second down position with the straight line cutting knife.Therefore, can justify the formation in the hole of the formation of a buttonhole and linearity selectively with being easy to structure.

Also have, cloth-cutting apparatus according to the Sewing machines relevant with a third aspect of the present invention, by the lifting of cutting cloth cutting knife of control with operating mechanism, so that be lowered by with controlling organization to second down position, drop to first down position, then cut the cloth cutting knife forms linearity after forming circle eye buttonhole hole.Therefore, cutting after the cloth cutting knife drops to second down position,, then can justify the prolongation etc. of the straight line portion of a buttonhole if make the article of being made or cut the cloth cutting knife and move.

Also have, cloth-cutting apparatus according to the Sewing machines relevant with a fourth aspect of the present invention, with the decline of second down position of the Chao Qiebu cutting knife of operating mechanism and towards between the decline of primary importance, by controlling with controlling organization, so that the article of being made are moved with travel mechanism, then after forming circle eye buttonhole, can on the given position of the article of being made, form the hole of linearity.Therefore, by setting the moving direction and the amount of movement of the article made, can easily justify the prolongation of straight line portion of a buttonhole and the cut-out of the part of failing to cut off fully.

Also have, if move the article of being made by direction and the distance that in the circle eye portion, descends by straight line cutting knife part, and the length of straight line cutting knife part made arrive circle eye portion and straight line portion engaging portion, then can be positively will justify eye portion and straight line portion couples together.Also have, even the article of being made are for cutting off the cloth of difficulty, the inside that also can cut off round eye portion fully.

Also have,, then after forming circle eye buttonhole, can form the hole of a plurality of rectilinear forms by moving and the decline of first down position of Chao Qiebu cutting knife of the article that repeatedly carry out being made.Therefore, be the direction that the straight line cutting knife partly prolongs the straight line portion of circle eye buttonhole by making the direction that moves the article of being made, can not change the straight line portion cutting the cloth cutting knife and make circle eye buttonhole and freely prolong by length arbitrarily.

Also have, by making the direction and the distance that move the article of being made is direction and the distance that straight line cutting knife part can form the hole of rectilinear form continuously, then by the moving and the decline of cutting the cloth cutting knife of the article that repeatedly carry out being made, can not change the straight line portion cutting the cloth cutting knife and make circle eye buttonhole and freely prolong by length arbitrarily.

Have again, if in the repeatedly decline that descends towards first down position, by the article of being made are moved, make to have at least once and in the circle eye portion, descend for straight line cutting knife part, and the length of straight line cutting knife part made arrive circle eye portion and straight line portion engaging portion, then the hole of a circle shape and the hole of rectilinear form can be coupled together fully.Also have, even the article that the quilt that is cutting off is made are for cutting off the cloth of difficulty, the inside that also can cut off round eye portion fully.

Also have, cloth-cutting apparatus according to the Sewing machines relevant with fifth aspect present invention, before second down position of Chao Qiebu cutting knife descends, by travel mechanism the article of being made are moved, and make and cut the cloth cutting knife and descend, return the position of the article of being made then towards primary importance, thus, before forming circle eye buttonhole, on the position that forms circle eye buttonhole, form the hole of linearity.Thus, the cloth of difficulty can be positively cut off, buttonhole can be formed neatly.

Have again, move,, then can on the position that forms the circle eye portion, form the hole of rectilinear form in the circle eye portion so that straight line cutting knife part descends by making the article of being made.Therefore,, therefore,, also can positively cut off, can form buttonhole neatly with a circle cutting knife part even cut off the cloth of difficulty owing to cut off the interior cloth of circle eye portion in advance.

The possibility of industrial utilization

As mentioned above, cloth-cutting apparatus of the present invention can be widely used at cloth and form as button On the sewing machine of the hole section in hole, need not change cutting knife and cutting knife bears thing, just can form difference and grow The round eyelet of degree and the hole of straight line shape.

Claims

1. cloth method of cutting that the cloth-cutting apparatus by Sewing machines carries out, this cloth-cutting apparatus has the cloth of cutting cutting knife and operating mechanism,

This cuts the straight line cutting knife part that the cloth cutting knife has a circle cutting knife part in the hole that forms circle eye shape and dispose and form the hole of linearity isolator below aforementioned circle eye cutting knife part,

This operating mechanism is lifting to the first down position and second down position selectively, at this first down position, aforementioned straight line cutting knife part drops on the article of being made from lifting position, at this second down position, aforementioned circle eye cutting knife part drops on the article of being made from lifting position with straight line cutting knife part

It is characterized in that, can selectively form straight line buttonhole and circle eye buttonhole.