CN100406633C

CN100406633C - Sewing machine for locking button hole

Info

Publication number: CN100406633C
Application number: CNB021425000A
Authority: CN
Inventors: 春日俊明
Original assignee: Juki Corp
Current assignee: Juki Corp
Priority date: 2001-09-20
Filing date: 2002-09-20
Publication date: 2008-07-30
Anticipated expiration: 2022-09-20
Also published as: JP2003093773A; CZ303773B6; KR20030025856A; TW567262B; CZ20023148A3; KR100878376B1; CN1408923A

Abstract

To provide a buttonhole sewing machine in which even a thick work cloth can be placed in and out and positioned on a throat plate with improved operability of setting a cloth. The sewing machine (1) has a work clamp (15) for pressing a cloth at its lowermost position. The clamp is movable to an uppermost position, a middle position and the lowermost position. The uppermost position and the middle position of the clamp 15 are changeable according to every buttonhole pattern so that even a thick work cloth can be placed in and out and positioned on the throat plate.

Description

Sewing machine for binding buttonhole

Technical field

The present invention relates to a kind of sewing machine for binding buttonhole, particularly with the relevant sewing machine for binding buttonhole that lifts of the presser feet of control compress material.

Background technology

As everyone knows, sewing machine for binding buttonhole is the Sewing machines that forms buttonhole and impose lock seaming on sewn object around it.On sewing machine for binding buttonhole, Yi Bian an edge prescribed direction is carried by the sewn object of maintenances such as presser feet, made the bottom line on upper thread that passes eedle and the bobbin that twists in the machine shuttle device twine and form the buttonhole stitching by cloth feeding mechanism.In the front and back of making the buttonhole stitching, the upside cutting knife is descended to the cutter platform that holds of downside, cut sewn object and form buttonhole with this.

, in the time of on the needle plate of Sewing machines that cloth is packed into, could under presser feet, keep surplus when only between presser feet that rises to uppermost position in fig-ure and needle plate, sufficient interval being arranged and on needle plate, put into cloth.

But, sewing machine for binding buttonhole in the past, the uppermost position in fig-ure of its presser feet is fixed.Therefore not too thick cloth is out of question, such as for the special thick sewn object that resembles children's cushion, crosses because of the uppermost position in fig-ure of presser feet and lowly can not successfully put into cloth and take out from needle plate under presser feet, the bad problem of operability when cloth is put in generation.

And, if the centre position between the upper/lower positions that makes presser feet in uppermost position in fig-ure and compress position, and the close with a gap state of cloth under, move cloth with respect to presser feet and can easily carry out the cloth contraposition.If fixed the centre position of presser feet, then under the situation of thick cloth, just can not successfully move the cloth of running into presser feet, this also is the reason that causes operability to worsen.

The objective of the invention is on sewing machine for binding buttonhole, good from needle plate, cloth is taken out the operability of putting into contraposition even also have, and cloth can be located for thick sewn object cloth.

Summary of the invention

For addressing the above problem, the present invention's 1 described sewing machine for binding buttonhole, for example as Fig. 1～Fig. 4, Fig. 8, shown in Figure 9,

Be a kind of by the presser feet 15 that is movable to uppermost position in fig-ure, centre position and upper/lower positions on the cloth that upper/lower positions is pushed down, form the sewing machine for binding buttonhole of buttonhole with the bottom line of upper thread that passes eedle 9 and quill, according to the lock seaming stitching around the pattern formation buttonhole of selecting also cuts off clothes with rag knife 16 from a plurality of buttonhole patterns, it is characterized in that: each buttonhole pattern is set the presser feet uppermost position in fig-ure with the uppermost position in fig-ure that can change above-mentioned presser feet 15.

The buttonhole pattern is to select according to the thickness of the cloth of making, shape, 1 described invention according to the present invention, owing to can change the uppermost position in fig-ure of above-mentioned presser feet each buttonhole pattern is set uppermost position in fig-ure, so available method of the uppermost position in fig-ure of presser feet being set toward height according to the thickness thickening of cloth, even thick sewn object cloth also can and presser feet between have sufficient leeway that cloth is successfully put into taking-up from needle plate, the operability when improving dress cloth.

The present invention's 2 described sewing machine for binding buttonhole are in the present invention's 1 described sewing machine for binding buttonhole, it is characterized in that: and then each buttonhole pattern is set the presser feet centre position with the centre position that can change above-mentioned presser feet.

2 described inventions according to the present invention, owing to setting the centre position to the centre position that each buttonhole pattern changes above-mentioned presser feet, so the available method of the centre position of presser feet being set toward height according to the thickness thickening of cloth makes and vacates gap and approaching between presser feet and the cloth.Thereby cloth is successfully moved and align, the operability when further improving dress cloth with presser feet.

The present invention's 3 described sewing machine for binding buttonhole are in the present invention's 1 described sewing machine for binding buttonhole, it is characterized in that:

When presser feet is risen to the uppermost position in fig-ure of above-mentioned setting, make the eedle that is positioned at by the top stop position of top dead-centre, rise to the top that is no more than top dead-centre and lift the pin position with the reversing of electrical motor of sewing machine.

3 described inventions according to the present invention, because when presser feet is risen to the uppermost position in fig-ure of above-mentioned setting, make Sewing machines reversing, and the eedle that is positioned at the top stop position by top dead-centre rise (pin is lifted in counter-rotating) lift the pin position to the top that is no more than top dead-centre, when so even the needle point of stop position is also high above in the uppermost position in fig-ure that sets, than eedle, also can rise to uppermost position in fig-ure by presser feet makes eedle not protrude in the downside of presser feet, and then does not injure the cloth that inserts under the presser feet.

The present invention's 4 described sewing machine for binding buttonhole, be in the present invention's 3 described sewing machine for binding buttonhole, it is characterized in that: in the uppermost position in fig-ure of the setting of above-mentioned presser feet when the needle point of stop position is also high up than above-mentioned eedle, can carry out lifting upward the rising of pin position by the above-mentioned eedle of the reversing of above-mentioned electrical motor of sewing machine.

4 described inventions according to the present invention, because when the uppermost position in fig-ure that sets compares that the needle point of stop position is also high above eedle, also can carry out making eedle lift the rising of pin position (pin is lifted in counter-rotating) upward by the reversing of above-mentioned Sewing machines, so, and do not injure the cloth that inserts under the presser feet because of presser feet can not protrude in the downside of presser feet to rising, the eedle of uppermost position in fig-ure.

The present invention's 5 described sewing machine for binding buttonhole are in the present invention's 3 described sewing machine for binding buttonhole, it is characterized in that:

Be provided with and set counter-rotating and lift the counter-rotating of pin presser feet height and lift pin presser feet height setting mechanism, and the uppermost position in fig-ure that sets of above-mentioned presser feet is lifted pin presser feet height when also high than the counter-rotating of above-mentioned setting, can carry out the rising that above-mentioned eedle is lifted the pin position upward by the reversing of above-mentioned electrical motor of sewing machine.

5 described inventions according to the present invention, because even the uppermost position in fig-ure that sets of above-mentioned presser feet is lifted pin presser feet height when also high than the counter-rotating that sets, also can make eedle lift the rising of pin position (pin is lifted in counter-rotating) upward by reversing in order to above-mentioned electrical motor of sewing machine, so can consider the height of needle point, suitably set counter-rotating and lift pin presser feet height, with this, make eedle not protrude in the downside of presser feet with presser feet to the rising of uppermost position in fig-ure, thereby do not injure the cloth that inserts under the presser feet.

The present invention's 6 described sewing machine for binding buttonhole, be the

present invention

1,2,3,4 or 5 in any described sewing machine for binding buttonhole, it is characterized in that:

When the uppermost position in fig-ure of having set presser feet or centre position, can before the cloth of location, drive above-mentioned presser feet motor, and with making presser feet move to the height and position of this setting, confirm mobile to the presser feet of the height and position of this setting with this.

6 described inventions according to the present invention because when setting the uppermost position in fig-ure of presser feet, can be confirmed before the cloth of location to the moving of the presser feet of the uppermost position in fig-ure of this setting, so can set the control of the presser feet position that is over later reliably.

The present invention's 7 described sewing machine for binding buttonhole, be the

present invention

As Fig. 5, shown in Figure 6, have: by the difference of its obliquity be divided into presser feet uppermost position in fig-ure (neutral position a), the centre position (1 grade of pedal position b) of presser feet, at the extreme lower position of presser feet and the stop position of electrical motor of sewing machine (2 grades of pedal position c), at the pedal 84 of 4 kinds of operating positions of the extreme lower position of presser feet and the activation point of electrical motor of sewing machine (3 grades of pedal position d); Detect above-mentioned 4 kinds of operating positions by two sensors 124 (pedal sensor A), the sensor 125 (pedal sensor B) that is configured in the pedal inclination way.

7 described inventions according to the present invention, the operator can carry out presser feet to mobile Sewing machines operations such as uppermost position in fig-ure by the operation pedal, has therefore improved operability.

Description of drawings

Fig. 1 is the stereoscopic figure of the sewing machine for binding buttonhole of the present invention's one example.

Fig. 2 is the cloth feeding mechanism of Sewing machines of main presentation graphs 1 and the perspective view of eedle elevating mechanism.

Fig. 3 is the eedle elevating mechanism of Sewing machines of main presentation graphs 1 and the perspective view of needle vibrating mechanism.

Fig. 4 is the front view that expression makes the presser foot device that the presser feet of Sewing machines of Fig. 1 moves up and down.

Fig. 5 be located at the location drawing (a) of the pedal on the Sewing machines of Fig. 1 and pedal position and presser feet position etc. concern schematic (b).

Fig. 6 is the key diagram with the pedal sensor detection of the pedal position of Fig. 5.

Fig. 7 is the control circuit calcspar of the Sewing machines of Fig. 1.

Fig. 8 is the front view of guidance panel of the Sewing machines of Fig. 1.

Fig. 9 is can be from the tables of data of the stitch data of the guidance panel of Fig. 8 input.

Figure 10 is that each data items of Fig. 9 is made corresponding key diagram with buttonhole.

Figure 11 is the flow chart of the buttonhole treatment process of one embodiment of the invention.

Figure 12 is that guidance panel is set the flow chart of handling in the processing of Figure 11.

Figure 13 is that the key in the guidance panel of Figure 12 is handled is handled schematic diagram, promptly increased flow process (a) that key handles and the flow process (b) that reduces the key processing.

Figure 14 is that the key in the guidance panel of Figure 12 is handled is handled schematic diagram, is the flow process (a) of add key processing and the flow process (b) that Substract key is handled.

Figure 15 is that the presser feet height in the processing of Figure 12 moves process chart.

Figure 16 is a pedal presser feet process chart in the processing of Figure 11.

Figure 17 is that the presser feet height of other embodiments of the invention moves process chart.

Figure 18 is the pedal presser feet process chart with the identical embodiment of Figure 17.

Among the figure: 1-sewing machine for binding buttonhole, 5-electrical motor of sewing machine, 9-eedle, the 15-presser feet, 16-rag knife, 70-presser foot device, the 84-pedal, 100-guidance panel, 110-control circuit, 111-CPU, 112-ROM, 113-RAM, 124-pedal sensor A, 125-pedal sensor B, the 127-presser feet lifts pulse motor.

The specific embodiment

Below, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(embodiment 1)

As the sewing machine for binding buttonhole 1 of one embodiment of the invention, as shown in Figures 1 and 2, constitute by pedestal part 2, vertical main body section 3 and chain-drive section 4.This Sewing machines 1 has the Sewing needles (sewing needle) 9 that carries out knee-action and the action of left and right sides balancing point, the presser feet 15 of compress (sewn object), the cloth-feeding plate 14 that when its downside keeps cloth, moves forward and backward along cloth feeding direction (Y direction), cut off the surface thread cut-off device 60 of upper thread at presser feet 15 upsides, the device for cutting lower thread of the cut-out bottom line under needle plate, cut off cloth and form the rag knife 16 of buttonhole, the presser foot device 70 (Fig. 4) that presser feet 15 is moved up and down, the pedal 84 (Fig. 5) that the operator stops with foot-operated starting of employing with the position of operation presser feet 15 and operation electrical motor of sewing machine, guidance panel 100 (Fig. 8) as the input mechanism of input each setting data etc., and control control circuit 110 (Fig. 7) of this sewing machine for binding buttonhole 1 etc.

Presser feet 15 and cloth-feeding plate 14 are when both clampings keep clothes, driven by Y work feed driving mechanism 13, and along fore-and-aft direction (Y direction) work feed.As shown in Figure 2, presser feet 15 is fixed on a side of the front end of the linking arm 24 that is connected with work feed parts 23, and in addition, cloth-feeding plate 14 is connected directly on work feed parts 23.These work feed parts 23 are fixed on the cloth pushing shaft 22 of tooth bar 22a, drive, presser feet 15 and cloth-feeding plate 14 are moved forward and backward by pinion 20a when making 20 rotations of Y work feed pulse motor.That is, constituted Y work feed driving mechanism 13 by Y work feed pulse motor 20, cloth pushing shaft 22, work feed parts 23, linking arm 24.

The elevating mechanism of lifting Sewing needles 9 as shown in Figures 2 and 3, by formations such as last axle (main shaft) 6, electrical motor of sewing machine 5, crank cams 7, and the rotation of electrical motor of sewing machine 5 driven be converted to elevating movement and pass to shank 8 with crank cam 7, make Sewing needles 9 do elevating movement with this.Last axle 6 is furnished with machine shuttle 12 interlocks that the connecting axle 10 of

bevel gear

10a, 10b is connected with lower shaft 11 and is connected with lower shaft 11 by upper and lower side.

The needle vibrating mechanism that Sewing needles 9 is swung is by being that the main needle vibrating mechanism of initial point amplitude fluctuation Sewing needles 9 in accordance with regulations and the amplitude change mechanism that changes this eedle amplitude and the datum line change mechanism that makes the change of said reference alignment left and right directions etc. constitute with certain datum line.

As shown in Figure 3, main needle vibrating mechanism, constitute by shank shaketable 18, balancing point arm 49, connecting axle 48, connecting rod 47, balancing point cam lever 46, triangular cam 35,

gear

42a, 42b etc., and so that the mode that passes to triangular cam 35 that rotatablely moves of last axle 6 is made balancing point cam lever 46 amplitude fluctuation in accordance with regulations, and to transmit this swing, make shank shaketable 18 be that rotate at the center with fulcrum 18a, makes Sewing needles 9 direction swing to the left and right with this.On main needle vibrating mechanism, Sewing needles 9 the moment that descends for the first time make shank 8 arrive datum lines the position, in the moment that descends for the second time shank 8 is arrived from the position of the Oscillation Amplitude of datum line regulation.

Amplitude change mechanism is by the rotation of balancing point feeding pulse motor 41, by connecting

rod

36,37, connects the Oscillation Amplitude that connecting rod 45 changes balancing point cam lever 46, changes the Oscillation Amplitude of Sewing needles 9 with this.

Datum line change mechanism, be by the rotation of datum line feeding pulse motor 40, to make the datum line change be the position of the fulcrum 44a of center rotation change datum line lever 44 with fulcrum 43a with lever 43.Because fulcrum 44a has determined the initial point of the oscillating motion of balancing point cam lever 46, so the change of fulcrum 44a position is by connecting the initial point that connecting rod 45 has changed the oscillating motion of balancing point cam lever 46, the datum line position of also just having changed Sewing needles 9.

Be installed in the presser feet 15 of linking arm 24 front ends, the presser foot device by the presser bar of packing into, lift pulse motor by presser feet and make it in the above-below direction lifting.The upper thread of fixing surface thread cut-off device 60 in linking arm 24 front ends and presser feet 15 opposite sides is cut and is cut action plate, is installed on sleeve pipe on the erecting bed that is fixed on the presser bar front end and cuts the hook portion of cutting action plate with upper thread and cooperate.

The formation of presser foot device 70 as shown in Figure 4.As shown in Figure 4, the axle center of presser bar 71 longitudinally divide with segmentation screw 72 fixing presser bar clip 73 and longitudinally the slotted hole 74a of linkage component 74 cooperate with this segmentation screw 72, the upper end of linkage component 74 is installed in rotation on the end of lever 75.With fulcrum 75a lever 75 rotations are installed on the no illustrated sewing machine frame freely.By pressing the no illustrated spring of presser feet clip 73 below presser bar 71 is pressed at setting-in on the presser bar 71.

Lever 75 other ends are installed in rotation on the end of horizontal connecting rod 76, are being rotatably mounted an end of lever 77 on the other end of connecting rod 76.The other end of lever 77 is installed in rotation on the end of linkage component 78 longitudinally, and the other end of linkage component 78 is installed in rotation on the axle clip 80 that is fixed in longitudinal axis 79 middle bodies.With fulcrum 77a lever 77 rotations are installed on the sewing machine frame freely.Use

lower support parts

79a, 79a and can move up and down longitudinal axis 79 and be installed on the sewing machine frame freely, and the tooth bar 79b that is located at its Lower Half be loaded on pinion 81 Nogami that presser feet lifts on pulse motor 127 output shafts and close.

Thereby, in a single day pulse motor 127 rotates and longitudinal axis 79 is risen, then linkage component 74 is descended by linkage component 78, lever 77, connecting rod 76 and lever 75, segmentation screw 72 just can slide in slotted hole 74a, and presser bar 71 presser feets 15 mobile downwards because of the pressure of above-mentioned spring and driving linking arm 24 front ends drop to the compress position.Like this, make segmentation screw 72 be in the interior quick condition of slotted hole 74a of linkage component 74, and make presser feet 15 drop to the compress position with spring force, be because presser feet 15 changes the down position of presser feet because of the thickness of cloth, although no longer descend so far, to drive the unfavorable condition cause in the morning that makes its decline can cause pulse motor 127 imbalances etc. again.If make pulse motor 127 counter-rotatings, then presser bar 71 above-mentioned springs of opposing and rising make the presser feet 15 of linking arm 24 front ends move to lifting position.

With the method for rotation amount of the direction anyway of this pulse motor 127 of control, can carry out various changes to the position of the above-below direction of presser feet 15.In the present embodiment, can by the pattern of buttonhole set presser feet 15 uppermost position in fig-ure, be positioned at the centre position between this uppermost position in fig-ure and the extreme lower position (compress position).Will be to this in aftermentioned.

Pedal 84 is placed under the sewing machine frame, be for the operator with foot-operated moving and be used to operate the device that the starting of presser feet position and electrical motor of sewing machine stops.In the present embodiment, this pedal 84 has the operator and does not treadle or leave the neutral position a that goes up most of pedal state and 1 grade, 2 grades, 3 grades 1 grades of treadling and step on a b, 2 grades and step on a c, 3 grades of four kinds of obliquities of stepping on a d shown in Fig. 5 (a).Pin is left then pedal 84, then return the neutral position from respectively stepping on the position.

In this pedal position a～d, be distributed into following Sewing machines operating position.The neutral position a that goes up most at pedal shown in the chart of Fig. 5 (b), is designated as the uppermost position in fig-ure of presser feet 15, and can rise to presser feet the uppermost position in fig-ure of setting.If place pedal 1 grade to step on a b, then be designated as the centre position, can move to presser feet the centre position of setting.If place pedal 2 grades to step on the position, then be designated as extreme lower position, can move presser feet and drop to extreme lower position (compress position).Presser feet is pushed down cloth by above-mentioned spring force in this extreme lower position.If place pedal 3 grades to step on a d, then presser feet starts Sewing machines under the state that this extreme lower position is pushed down cloth.The starting Sewing machines after, even pin from pedal leave pedal, pedal is got back to the centre position, still sew.

On this pedal 84, as shown in Figure 6, on the road of the inclination of pedal front end, dispose pedal sensor 1 24 (pedal sensor A), on the inclination road of pedal rear end, dispose pedal sensor 125 (pedal sensor B).And, front end at pedal 84 is provided with detecting

means

84a, 84b, be provided with detecting means 84c in the rear end, and with pedal 84 obliquities, with detecting

means

84a, 84b with sensors A contact noncontact, detecting means 84c with the contacting noncontact, disconnect sensors A, B of sensor B in order to connect, detect each position of pedal with this.Detect when when sensors A/B is on/off (ON/OFF), detecting for neutral position a, for disconnections/disconnections (OFF/OFF) be 1 grade step on a b, during for disconnections/connection (OFF/ON) detection be 2 grades step on a c, detection is 3 grades and steps on a d when being connection/connection (ON/ON).

The on/off signal of sensors A/B is sent to the CPU111 of control circuit 110, and is finally realized the detection of this pedal position with the CPU differentiation.

Control circuit 110 has CPU (Central Processing Unit) 111, ROM (Read Only Memory) 112 and RAM (Random Access Memory) 113 as shown in Figure 7.CPU111 is as operating area the regulation zone of RAM113, according to the control program that is stored among the ROM112, according to from the data of guidance panel 100 input with from the detection signal of connected various sensors, the controlling organization that carries out each drive division control by each driver.

On CPU111, connecting Y work feed pulse motor 20, datum line feeding pulse motor 40, the pulse motor driver 114 that drives with balancing point feeding pulse motor 41,115,116, the driving upper thread cuts off the upper thread cut-out of cutting actuator 67 (solenoid) and cuts actuator drive 117, the driving bottom line cuts off the bottom line cut-out of cutting actuator 66 (solenoid) and cuts actuator drive 118, the electrical motor of sewing machine driver 119 of drive controlling electrical motor of sewing machine 5, the presser feet that the drive controlling presser feet lifts pulse motor 127 lifts pulse motor driver 126, driving makes the cylinder driver 120 of the rag knife decline driving cylinder 19 of rag knife 16 declines.

On above-mentioned electrical motor of sewing machine driver 119, except electrical motor of sewing machine 5, also connecting the amount of spin code of electrical motor of sewing machine 5 turn to axle 6 rotational angle electrical motor of sewing machine encoder 121, detect that eedle 9 surpasses top dead-centre and the eedle top position sensor 122 of the eedle top position of the stop position that descends slightly, detect TG (tachometer generator) generator 123 of 6 rotating speed in shank top dead-centre sensor 130 that eedle 9 is positioned at top dead-centre, detections.

And the pedal sensor 124 (pedal sensor A), the pedal sensor 125 (pedal sensor B) that on CPU111, are also connecting detecting operation panel 100 and pedal 84 positions.

In ROM112, storing comprise according to handle from the input of guidance panel 100 or various stitch datas by guidance panel 100 inputs, calculate the control data that is used for buttonhole and makes (beginning to whole needle downing positions of sewing finishing etc.) from making computing, and make the control program of making processing etc. of action according to the control data that calculates.

In ROM112, store the data value of setting that corresponds respectively to data items shown in Figure 9 scope, will be in the unit value of the data with add key (+key) 103b and Substract key (key) 103c operation increase and decrease gained described later, the data value of standard etc.

And, in ROM112, store for the buttonhole of making regulation shape pattern, according to the total data value of Fig. 9 (a plurality of patterns of No.1～No.19) set.

RAM113 is the storing mechanism that also stores the various data of the buttonhole stitching by guidance panel 100 inputs when becoming the working region of CPU111.

The guidance panel (input mechanism) 100 that sewing machine for binding buttonhole 1 is possessed as shown in Figure 8.

Guidance panel 100 is not only to have set various stitch datas, but also set value the mechanism of the demonstration output that shows output and make the mistake in the control, therefore, is arranged on the sewing support of carrying sewing machine for binding buttonhole 1.

On guidance panel 100, be provided with start-up function portion 101, numbering operating portion 102, data value input operation part 103, pattern conversion operations portion 104.

In start-up function portion 101, be provided with the operator and be used to put in order make and prepare and be the display part 101b of preparation key 101a that sets input again and the LED (Light Emitting Diode) that shows this state etc.

On numbering operating portion 102, be provided with numbering display part 102a, reduce key (DOWN key) 102b and increase key (UP key) 102c.Numbering display part 102a is made of 27 sections (segment) display, is used for showing the bullets or the pattern numbering of input data values.

Reducing key 102b and increasing key 102c is the key that moves bullets and pattern singly, and reducing key 102b is the key of stepping back a number, increases key 102c and be the key of a number of advancing.Remain aftermentioned about the content of data items.

On data value input operation part 103, be provided with data display part 103a, Substract key 103b, add key 103c.Data display part 103a is made of 47 sections displays, is used for showing the data value of each data items.Substract key 103b and add key 103c are the keys that in accordance with regulations unit value increases and decreases data value one by one.As described later, but to the unit value and the setting range of each data items decision regulation, by Substract key 103b then data value reduce a unit value, then increase a unit value by add key 103c.

In pattern conversion operations portion 104, be provided with the pattern numbered keys 104a that is transformed into pattern numbering setting pattern, the data key 104b that is transformed into data input setting pattern.On pattern numbered keys 104a and data key 104b, be respectively equipped with display 104c, the 104d of LED etc., and can inform that the operator is pattern numbering setting pattern or data entry mode in the mode of its bright lamp.

The operator at first operates pattern numbered keys 104a and from the pattern No.1,2,3,4 of Fig. 9 ... the desirable pattern numbering of middle selection.The selection of this pattern numbering is to determine according to the thickness of tailoring cloth and shape.Then, operating data key 104b, select each data items and on data value input operation part 103, set, the change data value.And, owing to give choosing value (initial value), so under this data value is suitable situation, there is not necessity of changing with what the method for selecting the pattern numbering was set this each pattern.

Shown in Figure 9 is can be from the tables of data of the data items of guidance panel 100 inputs.Figure 10 is the key diagram of which part of the represented buttonhole of the data items of data No.1～11 of the tables of data of key diagram 9.On each data items name of the buttonhole stitching u0 of Figure 10, added parenthesized data No.

Data No.1 is the incision length data (length of buttonhole hole u1) of buttonhole length, data No.2, the 3rd, right width data (distance of buttonhole hole u1 and the right side seam u2 of portion left end) of otch and otch left side width data (distance of buttonhole hole u1 and the left side seam u2 of portion right-hand member), data No.4 is locking edge width data (left and right sides width of the u2 of latasuture portion), data No.5 is bar length data (reinforcing the longitudinal length of the seam u3 of portion), data No.6, the 7th, as gap data of gap length data (on reinforce lower end and the buttonhole hole u1 upper end of the u3 of seam portion distance) and the 2nd gap data (upper end of the reinforcing seam u3 of portion and the distance of u1 lower end, buttonhole hole down), data No.8 is parallel portion spacing data (between two pins of the u2 of latasuture portion distance) longitudinally, data No.9 reinforces seam portion spacing data (reinforce between two pins of the seam u3 of portion distance) longitudinally, data No.10, the 11st, reinforce the right correction of seam width data (reinforcing the deviation length of the seam u3 of portion right-hand member and the right side seam u2 of portion right-hand member) and reinforce seam width left side correction data (reinforcing the deviation length of the seam u3 of portion left end and the left side seam u2 of portion left end).

Data No.12, the 13rd, left parallel portion tension data (the machine line tension when making the left side seam u2 of portion) and right parallel portion tension data (the machine line tension when making the u2 of right side seam portion), data No.14,15 the 1st reinforces seam portion tension data (making the machine line tension when reinforcing the seam u3 of portion) and the 2nd reinforcing seam portion tension data (the machine line tension when making down the reinforcing seam u3 of portion), and data No.16 is high speed limit data (the maximum limit number of Sewing machines rotating speed).

Data No.17～19th, characteristic item data of the present invention, data No.17 is immediately a presser feet height (uppermost position in fig-ure of presser feet) in the pedal of pedal 84, the presser feet height (centre position of presser feet) that data No.18 is a pedal when 1 grade is stepped on, data No.19 is that pin presser feet altitude information is lifted in counter-rotating.

Immediately presser feet height in the pedal of data No.17, promptly the uppermost position in fig-ure of presser feet can be in the scope of 1.00～20.00mm, set at interval with 0.5mm.The centre position of the presser feet height of the pedal of data No.18 when 1 grade is stepped on, presser feet can scope at 0～20.00mm in, set at interval with 0.5mm.Pin presser feet height is lifted in the counter-rotating of data No.19 can be in the scope of 14.00～20.00mm, set at interval with 0.5mm.

The maximum of present embodiment is characterised in that: when putting cloth on needle plate, even thick cloth also operability is put into taking-up to cloth well on needle plate, and in order to align the presser feet position, wherein particularly can be by the

pattern

1,2,3,4 of each buttonhole ... immediately the setting value of the presser feet height (centre position of presser feet) of pedal when 1 grade is stepped on of presser feet height (uppermost position in fig-ure of presser feet), data No.18 in change and the pedal of setting data No.17.

In view of the above, for the buttonhole pattern of making thick cloth, can with toward the high method of setting the presser feet uppermost position in fig-ure, make between itself and the presser feet and open sufficient surplus, so that cloth is come in and gone out.And use past height to set the method in presser feet centre position, presser feet and cloth are had in vain with gap near also successfully relative presser feet moving cloth and easily aligned position for thick cloth.

In above-mentioned, pin presser feet height is lifted in so-called counter-rotating, be meant that the eedle of stop position above being positioned at protrudes in the presser feet downside and is in the presser feet height and position of making thing that injures below the presser feet after descending slightly again by top dead-centre, for fear of this situation, require to make eedle be positioned at the presser feet height and position that also will lean on than top stop position.The value that pin presser feet height is lifted in this counter-rotating is the intrinsic value of Sewing machines, can change in above-mentioned scope and set on the Sewing machines of present embodiment.

The counter-rotating of the eedle of stop position is lifted pin by electrical motor of sewing machine is carried out with ormal weight counter-rotating up, and with just changeing with electrical motor of sewing machine just pin is lifted in commentaries on classics the time different, can not form stitching and eedle is risen.It is the assigned position that also will lean on than the top stop position that arrives top dead-centre that the pin position is lifted in counter-rotating.

In the present embodiment, when buttonhole, carry out above-mentioned presser feet control.The treatment process flow process of the buttonhole of present embodiment as shown in figure 11.

The flow process of Figure 11 is for example when connecting the power supply of Sewing machines 1.The guidance panel that this flow process has a step S1 is set processings, step S3,6,9 pedal presser feet processing.Also have the presser feet height of setting among the step S18 (Figure 12) that handles at guidance panel and move processing.At first, these processing are described.

Guidance panel is set and is handled, and is when the operator makes buttonhole, carries out with the processing that pattern is numbered, stitch data is set of 100 pairs of buttonholes of guidance panel and according to flow process shown in Figure 12.Common guidance panel is set and is handled, and is from selecting the pattern numbering with pattern numbered keys 104a.Then input plan the data No. of input, and while importing this data value, repeating the input of desirable total data No. up to end.

In Figure 12, at first, whether press the key of guidance panel 100, if do not press then intactly end process step S11 decision operation person.Then at step S12, the operator presses the key of guidance panel 100, promptly by pattern numbered keys 104a, according to step S13 described later, S14, from the pattern No.1,2,3,4 shown in the tables of data of Fig. 9 ... the middle pattern numbering (processing of pattern key) of selecting.

Then at step S13, for the selection of data number, press data key 104b, and select and the relevant lock seaming data of data No.1～data No.16 and the presser feet altitude information relevant (data key processing) with data No.17～data No.19 according to step S13, S14.

Can come switching pattern numbering, data number (processing of UP key, DOWN key are handled) by increase key 102c, the minimizing key 102b that presses guidance panel 100 at step S13, S14.

Increase key and handle (processing of UP key) shown in Figure 13 (a),, when having selected data, just data No. is added 1 (+1), when having selected pattern, just pattern No. is added 1 (+1) if pressed the increase key.Whichsoever, when surpassing setting range, input be the minimum of a value (minimum pattern No.) of the project selected.

Equally, reduce key and handle (processing of DOWN key) shown in Figure 13 (b), if, when having selected data, just data No. is subtracted 1 (1), just pattern No. is subtracted 1 (+1) when having selected pattern by reducing key.Whichsoever, when surpassing setting range, input be the maximum (maximum pattern No.) of the project selected.

Imported after the above-mentioned data number, imported this data value again.And can be in step S16,17 with pressing the add key 103c of guidance panel 100, the data value that Substract key 103b comes switch data No.1～19 (+key handles ,-key handle).

Add key is handled (processings of+key) shown in Figure 14 (a), when pressing add key, just adds one on the data value of having selected and changes unit.When surpassing setting range, import the minimum of a value of each project of having selected.Equally, Substract key is handled (key processings) shown in Figure 14 (b), when pressing Substract key, just subtracts one on the data value of having selected and changes unit.When surpassing setting range, import the maximum of each project of having selected.

Then, carry out the presser feet height at step S18 and move processing.This presser feet height move handle be when guidance panel is set last, presser feet moved up and down and carry out the affirmation processing that presser feet moves to setting height according to the height setting data.The presser feet height moves processing to carry out according to the flow process of Figure 15.

As shown in figure 15, judge whether to have selected data (at the guidance panel setting data) at step S21, if do not select data, end process intactly then.If selected data, then in step S22, judged whether to select data No.17 (in the pedal immediately presser feet height), if selected data No.17, then the setting value of the presser feet height of step S23 during the pedal neutral position set and the working region of input RAM113 in.Then, judge in this pedal at step S24 whether immediately presser feet height (presser feet uppermost position in fig-ure) is not less than (that is, equally highly still higher) counter-rotating and lifts pin presser feet height (setting value of data No.19).

Presser feet height when step S24 is judged as the pedal neutral position is not less than and reverses when lifting pin presser feet height (during "Yes"), reverse at step S25 and to lift pin and handle, and eedle is positioned at also will lean on than top stop position lift the pin position to top dead-centre top before.Presser feet height when presser feet is risen to the pedal neutral position, rise to when setting uppermost position in fig-ure, be positioned at this top and lift the eedle of pin position and be in not the height that protrudes out below the presser feet.

Thereafter, at the pulse motor 127 of step S26 driving presser feet, the presser feet height (uppermost position in fig-ure) when making presser feet move (rising) to the pedal neutral position.

Be judged as the presser feet height at step S24 and be lower than counter-rotating when lifting pin presser feet height (during "No"), pin is lifted in the counter-rotating that then there is no need to carry out step S25, so enter step S26 from step S24, and drive the pulse motor of presser feet, the presser feet height (uppermost position in fig-ure) when making presser feet move to the pedal neutral position at step S26.

And be judged as at step S22 and enter step S27 when not selecting data No.17, judged whether to select data No.18 (the presser feet height of pedal when 1 grade is stepped on), and when not selecting end process intactly.Be judged as when having selected data No.18 at step S27, then be input to the setting value of the presser feet height (centre position) of pedal when 1 grade is stepped in the RAM113 and set at step S28.Judge at step S24 whether this presser feet height is not less than counter-rotating and lifts pin presser feet height, when cannot not being judged as lowly, then after step S25 has carried out counter-rotating and lifts pin and handle, drive the pulse motor 127 of presser feet at step S26, make presser feet move (decline) to the presser feet height of pedal when 1 grade is stepped on.

Usually, it is low that the pin height is lifted in the presser feet aspect ratio counter-rotating of pedal when 1 grade is stepped on, so enter step S26 from step S24 without step S25.

According to above-mentioned, before guidance panel is set making of stage, can use actual cloth to confirm according to setting data presser feet moving to uppermost position in fig-ure, centre position.Like this, after data setting, carry out in the processing of pedal presser feet, can carry out the height control of presser feet reliably with the flow process of Figure 11.

The pedal presser feet is handled, and is that the later presser feet height of making in the operation of guidance panel setting processing end is controlled, and comprises the control of being operated pedal 84 by the operator.Carry out according to flow process shown in Figure 16.

As shown in figure 16, detect the position of pedal 84 and judge whether pedal is positioned at the neutral position by pedal sensor A, B at step S31, if the neutral position, then at step S32 pedal in the working region of the input of the presser feet height (setting value of data No.17) during in neutral position RAM113 and setting.Then judge that at step S33 whether not low this presser feet height (promptly, same high, still than its height) lift pin presser feet height (setting value of data No.19) in counter-rotating, if be judged as (when being "Yes") when being not less than, then reverse to lift the pin processing and eedle is positioned at above above the regulation of top dead-centre and lift the pin position at step S34.Then, the pulse motor 127 in that step S35 drives presser feet makes presser feet move (rising) to the presser feet height (uppermost position in fig-ure) of pedal when the neutral position.

Presser feet rise to pedal in immediately the presser feet height, when promptly rising to uppermost position in fig-ure, because lifting pin because of counter-rotating is positioned at the eedle of lifting the pin position in the top and is in the height that does not protrude out from the presser feet below, so when afterwards cloth being inserted needle plate, cloth can not hindered by eedle, in this fact Example, owing to can set the uppermost position in fig-ure of presser feet, even also be possible to thick cloth by each buttonhole pattern.

Be judged as the presser feet height when being lower than counter-rotating and lifting pin presser feet height (when the "No") at step S33, lift pin owing to there is no need to carry out the counter-rotating of step S34, so enter step S35 and drive the pulse motor of presser feet at step S35 from step S33, make presser feet move to pedal in immediately presser feet height (uppermost position in fig-ure).

And be judged as pedal (because of the operator steps) when not being positioned at the neutral position at step S31, then judge at step S36 whether pedal is positioned at 1 grade and steps on the position, if 1 grade step on the position then step S37 presser feet height (setting value of data No.18) the input RAM113 of pedal when 1 grade is stepped in and set.Judge at step S33 whether this presser feet height is not less than counter-rotating and lifts pin presser feet height then, if be judged as when being not less than, then reverse and drive the pulse motor of presser feet at step S35 after lifting pin and handling, make presser feet move to the presser feet height (centre position) of pedal when stepping on position for 1 grade at step S34.

Usually, because that the pin height is lifted in the presser feet aspect ratio counter-rotating of pedal when 1 grade is stepped on is low, so just enter step S36 without step S34 from step S33.

The presser feet height of above-mentioned pedal when 1 grade is stepped on, the presser feet that promptly is positioned at the centre position is in cloth gapped near state, if inserted cloth on needle plate, then can move this cloth glidingly with respect to presser feet, and cloth is aligned.In the present embodiment, owing to can set the centre position of presser feet by each buttonhole, so even thick cloth also is possible.

Then step S36 be judged as pedal be not step on the position at 1 grade, be that pedal is positioned at 2 grades when stepping on position or 3 grades and stepping on, at step S38 presser feet in upper/lower positions (compress position) the input RAM113 and setting.Because it is low that this upper/lower positions is lifted pin presser feet height than counter-rotating, so enter step S35 without step S34, and drive the pulse motor of presser feet at step S35 from step S33, make presser feet move the upper/lower positions (compress position) that (declines) arrives compress.

Below, the flow process of the buttonhole of Figure 11 is described.Among Figure 11, carry out guidance panel shown in Figure 12 at step S1 and set and handle, judge whether to press the preparation key 101a of guidance panel 100, as pressed and then enter step S3, then do not return step S1 if do not press at step S2.Set in the final step of handling at this guidance panel, as mentioned above, when selected data No.17,18 the time, lift after pin handles reversing as required, mobile presser feet is located at data No.17,18 presser feet height and confirms moving to uppermost position in fig-ure, centre position according to setting data.

At step S3, carry out the processing that needle downing position calculates according to the setting data of setting with guidance panel 100, then in step S4, carry out the pedal presser feet processing of Figure 16 in the stage that the operator puts into cloth on the needle plate and before positioning action.In pedal is handled, as mentioned above, carry out pedal and be in the neutral position, be to step on the position at 1 grade, or step on position or 3 grades of judgements of stepping on the position at 2 grades, necessary words are lifted pin and presser feet are moved to the presser feet height and position of each pedal position of correspondence after handling reversing.

When at first cloth being put into and being positioned on the needle plate, pedal is positioned at the neutral position, and presser feet is positioned at uppermost position in fig-ure.In step S5, judge whether to press preparation key 101a then, prepare key 101a, then return step S1 and can use guidance panel 100 to set again if press once more.

, handle (Figure 16), cloth is positioned on the needle plate if do not press preparation key 101a once more at step S5 while then carry out the pedal presser feet step S6 operator.The operator does not also treadle and pedal is positioned at the neutral position, and then presser feet is positioned at uppermost position in fig-ure.

At this moment, because in order to improve the uppermost position in fig-ure of presser feet according to the thickness of tailoring cloth, to set the uppermost position in fig-ure of presser feet according to each buttonhole pattern, even so thick cloth also can have sufficient surplus between itself and presser feet, and can successfully insert needle plate to thick cloth.And lift pin with counter-rotating and make and be positioned at the eedle that policy lifts the position and can below the presser feet that rises to uppermost position in fig-ure, do not protrude out, even thick cloth can not hindered by eedle yet.

When the operator stepped on pedal at 1 grade, then presser feet was located in the centre position between uppermost position in fig-ure and the upper/lower positions.At this moment, the centre position of presser feet is set on the ground, centre position that can improve presser feet according to the thickness of tailoring cloth according to each buttonhole pattern, even so thick cloth also can make presser feet be in cloth have the gap near state, and cloth is moved and aligned position easily relative to presser feet.

The position of cloth aligns after the end, treadles (2 grades step on position), makes presser feet to drop to upper/lower positions once more by the operator, and with the pressure that is inlaid in the spring on the presser bar, with presser feet cloth is pushed down.The operator treadles (stepping on the position for 3 grades), connects the firing switch of Sewing machines once more then.Accept these signals, judge that in step S7 the firing switch that presser feet is positioned at upper/lower positions and Sewing machines is switched on (stepping on the position for 3 grades), and enter step S8, this comprise lock seaming, open buttonhole, tangent line etc. make processing.

Even the operator leaves pin from pedal, make processing and also automatically carry out.Pedal returns to the neutral position because of pin is left.

Making of step S8 handled in case end then after step S9 carries out the processing of pedal presser feet, is returned step S5, repeats to the buttonhole end to the entire quantity of making thing.

In the pedal presser feet of this step S5 is handled, because when the operator steps on pedal when 1 grade is stepped in that the sewing finishing of the 1st buttonhole is later, because presser feet is parked in the centre position, makes presser feet easily align the state of making of the 2nd buttonhole so can intactly maintain.Making of buttonhole below the 3rd also is to carry out equally.

Because the sewing machine for binding buttonhole of present embodiment is made of above, so following action effect is arranged.

(1) by because of can set the uppermost position in fig-ure of presser feet according to each buttonhole pattern, so can be according to the thickness of the cloth of making toward the high method of setting the uppermost position in fig-ure of presser feet, even the cloth of making is thick, also can and presser feet between have sufficient leeway and cloth successfully put into taking-up on needle plate, the operability when putting into cloth with raising.

(2) by because of can set the centre position of presser feet according to each buttonhole pattern, so can be according to the method in the centre position of the thickness setting presser feet of the cloth of making, it is approaching with gap that presser feet and cloth are had.Therefore, even thick cloth also can successfully move and easy aligned position with respect to presser feet, improve the operability of cloth location.

(3) when presser feet is risen to uppermost position in fig-ure, the uppermost position in fig-ure that sets is when the needle point height of stop position is high up than the eedle by top dead-centre, carry out counter-rotating owing to can make electrical motor of sewing machine, thereby pin is lifted in the eedle counter-rotating that is positioned at the top stop position lifted the position to the last policy position that is no more than top dead-centre, so make eedle not protrude from the downside of presser feet by presser feet to the rising of uppermost position in fig-ure, do not injure the cloth that inserts the presser feet below.

(4) when identical with the presser feet lifting position or lower, can lift pin with setting the method counter-rotating of lifting pin presser feet height of reversing than it.

(5) when the uppermost position in fig-ure of having set presser feet and centre position, can before the cloth of location, drive the presser feet motor, presser feet is moved to the height and position of this setting, confirm that with this presser feet to the moving of the height and position of setting, therefore can carry out data setting reliably and finish later presser feet height control.

(6) operator can carry out presser feet by the operation pedal and moves the Sewing machines operation that waits to uppermost position in fig-ure, so has improved operability.

(embodiment 2)

In the present embodiment, move in processing, the processing of pedal presser feet at the presser feet height, presser feet to the pedal of having set in immediately presser feet height (uppermost position in fig-ure) when mobile, lift control in order to simplify presser feet, do not add this presser feet height and whether lift the low judgement of pin presser feet height, reverse without exception and lift the pin processing than counter-rotating.The formation of other of present embodiment is identical with embodiment 1.

The flow process that the presser feet height of present embodiment moves processing as shown in figure 17, the pedal presser feet handle as Figure 18 no.

Presser feet height shown in Figure 17 moves processing, omitted in the flow process of Figure 15 judge pedal in immediately the presser feet height lift the step S24 of pin presser feet height size with counter-rotating.And because even the presser feet height (centre position) of pedal when 1 grade is stepped on lifted the counter-rotating low, when also need the height when stepping on to 1 grade on pedal not moving of pin presser feet height than counter-rotating lifts pin and handle, so Figure 15 is set in the step S28 among the RAM to the height (setting value of data No.18) of pedal when 1 grade is stepped on, not inserting step S25 (counter-rotating is lifted pin and handled) in Figure 17 but insert flow process on the next procedure 26 (the driving pulse motor is to the presser feet height).

Equally, pedal presser feet shown in Figure 180 is handled, omitted in the flow process of Figure 16 the judgement pedal in immediately the presser feet height lift the step S33 of pin presser feet height size with counter-rotating.Even and since the upper/lower positions (compress position) of the presser feet height (centre position) of pedal when 1 grade is stepped on, presser feet to lift pin presser feet height than counter-rotating low, also need not lift pin in the counter-rotating when each presser feet height moves handles, so Figure 16 is set in the height (setting value of data No.18) of pedal when 1 grade is stepped on step S37 among the RAM, and the upper/lower positions of presser feet is set in step S38 among the RAM, not inserting step S34 but flow process on the insertion next procedure 35 (the driving pulse motor is to the presser feet height) in Figure 18.

According to present embodiment similarly to Example 1 action effect is arranged also.Particularly the presser feet height moves processing, because in the pedal presser feet is handled, presser feet immediately presser feet height (uppermost position in fig-ure) in the pedal of having set is not added this presser feet height when mobile whether lift the low judgement of pin presser feet height than counter-rotating, reverse without exception and lift the pin processing, even so in the setting of presser feet uppermost position in fig-ure than eedle above the needle point of stop position when high, also make eedle not protrude in the below of presser feet by presser feet is risen to uppermost position in fig-ure.And simplified the control of lifting of presser feet.

As described above, according to sewing machine for binding buttonhole of the present invention, owing to can set the uppermost position in fig-ure and the centre position of presser feet according to each buttonhole pattern, so, even very thick discrepancy or the position that also can carry out the good cloth on needle plate of operability of the cloth of sewn object aligns, and cloth is located.

Claims

1. sewing machine for binding buttonhole, by the presser feet that is movable to uppermost position in fig-ure, centre position and upper/lower positions on the cloth that upper/lower positions is pushed down, with the bottom line of upper thread that passes eedle and quill, form the lock seaming stitching around the buttonhole and cut off cloth and form buttonhole, it is characterized in that with rag knife according to the pattern of from a plurality of buttonhole patterns, selecting:

The rotation amount of pulse motor by the control Sewing machines can change the uppermost position in fig-ure of described presser feet, comes each buttonhole pattern is set the presser feet uppermost position in fig-ure.

2. sewing machine for binding buttonhole according to claim 1 is characterized in that:

And then each buttonhole pattern is set the presser feet centre position with the centre position that can change described presser feet.

3. sewing machine for binding buttonhole according to claim 1 is characterized in that:

When making presser feet rise to the uppermost position in fig-ure of described setting, make the eedle that is positioned at by the top stop position of top dead-centre, rise to the top that is no more than top dead-centre and lift the pin position with the reversing of electrical motor of sewing machine.

4. sewing machine for binding buttonhole according to claim 3 is characterized in that:

, can carry out making described eedle lift the rising of pin position upward when the needle point of stop position is high up than described eedle in the uppermost position in fig-ure of the setting of described presser feet by the reversing of described electrical motor of sewing machine.

5. sewing machine for binding buttonhole according to claim 3 is characterized in that:

Be provided with and set counter-rotating and lift the counter-rotating of pin presser feet height and lift pin presser feet height setting mechanism, and the uppermost position in fig-ure that sets of described presser feet is lifted pin presser feet height when high than the counter-rotating of described setting, can carry out the rising that described eedle is lifted the pin position upward by the reversing of described electrical motor of sewing machine.

6. according to any described sewing machine for binding buttonhole in the claim 1 to 5, it is characterized in that:

When the uppermost position in fig-ure of having set presser feet or centre position, can before the cloth of location, drive described presser feet motor, and confirm moving to the presser feet of the height and position of this setting so that presser feet moves to the height and position of this setting.

7. according to any described sewing machine for binding buttonhole in the claim 1 to 5, it is characterized in that:

The difference that has by its obliquity is divided into: the uppermost position in fig-ure of presser feet, the centre position of presser feet, at the stop position of the extreme lower position of presser feet and electrical motor of sewing machine, at the pedal of 4 kinds of operating positions of the activation point of the extreme lower position of presser feet and electrical motor of sewing machine; By being configured in the described 4 kinds of operating positions of two sensor in the pedal inclination way.