CN100516337C - Cloth feeder of sewing machine - Google Patents

Cloth feeder of sewing machine Download PDF

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Publication number
CN100516337C
CN100516337C CNB031251617A CN03125161A CN100516337C CN 100516337 C CN100516337 C CN 100516337C CN B031251617 A CNB031251617 A CN B031251617A CN 03125161 A CN03125161 A CN 03125161A CN 100516337 C CN100516337 C CN 100516337C
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CN
China
Prior art keywords
work feed
control stick
cloth
feeding
spacing
Prior art date
Application number
CNB031251617A
Other languages
Chinese (zh)
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CN1458317A (en
Inventor
春日俊明
岩田寿之
今望武
窪田义彦
Original Assignee
重机公司
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Publication date
Priority to JP2002138392 priority Critical
Priority to JP2002138392A priority patent/JP3867012B2/en
Application filed by 重机公司 filed Critical 重机公司
Publication of CN1458317A publication Critical patent/CN1458317A/en
Application granted granted Critical
Publication of CN100516337C publication Critical patent/CN100516337C/en

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Classifications

    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B19/00Programme-controlled sewing machines
    • D05B19/02Sewing machines having electronic memory or microprocessor control unit
    • D05B19/12Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
    • D05B19/16Control of workpiece movement, e.g. modulation of travel of feed dog
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B27/00Work-feeding means
    • D05B27/22Work-feeding means with means for setting length of stitch

Abstract

To provide a fabric feeding apparatus of a sewing machine, which dispenses with complicated operations when manufactured, can reduce manufacturing costs, and has excellent operability. This fabric feeding apparatus of the sewing machine comprises a feed dog 11 for feeding a fabric by coming out onto/receding from a throat plate in mechanical synchronization with a main spindle driven by a main spindle motor 4, a square piece 30 for changing a feed pitch by changing an angle of gradient with respect to a prescribed reference position, a stepping motor 50 for changing the angle of the gradient of the square piece 30, and a central processing unit (CPU) 80 for controlling the rotational position of the stepping motor 50. This fabric feeding apparatus is equipped with an encoder 70 which outputs a manipulate signal by detecting the manipulate position or manipulated variable of a control lever, and a control panel 8 for setting the initial value and lower limit value of the feed pitch. The CPU 80 controls the rotational position of the stepping motor 50 so that the feed pitch can be set according to the manipulate position or manipulated variable of the control lever within a range from the initial value to the lower limit value when the control lever is manipulated.

Description

The cloth-feeding device of Sewing machines

Technical field

The present invention relates to a kind of cloth-feeding device that can control the work feed spacing neatly and have the Sewing machines of superior operability.

Background technology

As cloth-feeding device in the past, as everyone knows, have along be slightly that motion track on the ellipse is haunted on the needle plate with feed motion and according to the cloth feed amount of the horizontal direction amount of movement on the needle plate carry cloth feed dog, change the hornblock of this feed dog motion track.On such cloth-feeding device, by changing the angle of inclination of hornblock, change the motion track of feed dog and change horizontal direction amount of movement on the needle plate with respect to the stipulated standard position, promptly change the work feed spacing.

As such cloth-feeding device, as shown in figure 11, as everyone knows, be to be connected with hornblocks 210 in being disposed at Sewing machines base plate 200 with the control stick 110 that the linkage 300 of regulation mechanically will be located on the Sewing machines head 101, by operating this control stick 110 in order to changing the angle of inclination of hornblock 210, and change the mechanism of work feed spacing.

In such mechanism, control stick 110 can be that rotate at the center with rotating shaft 120, and sets its movable range with block 130,140.Therefore, change the position of block 130,140, just changed the movable range of control stick 110.

But, can change on the cloth-feeding device of work feed spacing with mechanically connecting control stick 110 and hornblock 210 like this, it is very numerous and diverse that assembling is used for mechanically connecting the operation of linkage of control stick 110 and hornblock 210, and cost is also very high.

In addition, because variable quantity with respect to hornblock 210 angles of inclination of the predetermined operation amount of control stick 110, in some sense by determined, so can not adjust variable quantity neatly according to various situations of making or user's hobby with respect to the work feed spacing of the predetermined operation amount of control stick 110.

And, when the lower limit of the work feed spacing of change control stick when being operated, position that must change block 140, its adjustment is very bothersome.

The objective of the invention is to, the numerous and diverse operation when not needing to make, and can reduce manufacturing cost.

And, the present invention also aims to provide a kind of work feed spacing that can change corresponding to the predetermined operation amount of control stick, and can be according to the cloth-feeding device of the Sewing machines sewing condition alter operation, that have superior operability.

In addition, the present invention also aims to provide a kind of can be easily and carry out the cloth-feeding device of the Sewing machines of alter operation reliably.

Summary of the invention

For addressing the above problem, the cloth-feeding device of the present invention's 1 Sewing machines, has to shown in Figure 10 as Fig. 1:

With the spindle machine ground interlock that drives by main motor 4 and the feed dog 11 of haunting the conveying cloth on the needle plate 12, by change change the motion track of above-mentioned feed dog with respect to the angle of inclination of the reference position of regulation and change the work feed spacing hornblock 30, change the CD-ROM drive motor (impulse motor 50) at the above-mentioned angle of inclination of above-mentioned hornblock, it is characterized in that, be provided with:

Quilt is to a distolateral application of force when not operation, and by operating to other end side shifting, and the control stick 6 of striding total travel scope Sa and can backstitch with manual operation, with the operating position or the operational ton that detect above-mentioned control stick, and the operation detection mechanism of output function signal (encoder 70), with according to above-mentioned detection signal, calculate calculation mechanism corresponding to the instruction work feed spacing Pb of aforesaid operations position (CPU80 and the instruction work feed distance computation S6 of mechanism) and when the above-mentioned control stick of operation, for the work feed spacing being made as above-mentioned instruction work feed spacing corresponding to the operating position of above-mentioned control stick, and control the CD-ROM drive motor controlling organization of the position of rotation of above-mentioned CD-ROM drive motor.

According to the present invention 1, the linkage that control stick and hornblock mechanically is connected as being used in the past needn't be set, just can carry out the control of work feed spacing.

Therefore, owing to do not need to be used to be provided with numerous and diverse operation of linkage, can increase substantially the operability when making.And, can reduce the cost that removes the linkage part.

In addition, the present invention's 2, it is the cloth-feeding device of 1 described Sewing machines according to the present invention, be provided with: instruct the scope of work feed spacing according to the aforesaid operations signal and at the lower limit of set upper limit instruction work feed spacing and regulation, calculate calculation mechanism corresponding to the instruction work feed spacing of aforesaid operations position, with the total travel scope that is set in above-mentioned control stick, as the initial value set mechanism (guidance panel 8) of the initial value of the top boundary of work feed spacing be set in the total travel scope of above-mentioned control stick, lower limit set mechanism (guidance panel 8) as the lower limit of the below boundary of work feed spacing.

Therefore, the block of the machinery of control stick movable range needn't be provided for setting, just the work feed spacing can be in the scope from the initial value to the lower limit, changed.

The present invention's 3, it is the cloth-feeding device of 1 or 2 described Sewing machiness according to the present invention, it is characterized in that: aforesaid operations testing agency, detect the operating position and the output function signal of above-mentioned control stick, above-mentioned CD-ROM drive motor controlling organization, when having operated above-mentioned control stick, according to by the detected operating position of aforesaid operations testing agency, make the work feed spacing change to the position of rotation of the above-mentioned CD-ROM drive motor of above-mentioned lower limit ground control from above-mentioned initial value.

The present invention's 4, the cloth-feeding device of 1 or 2 described Sewing machiness according to the present invention, it is characterized in that: aforesaid operations testing agency, detect the operational ton and the output function signal from non-operating state of above-mentioned control stick, above-mentioned CD-ROM drive motor controlling organization, when having operated above-mentioned control stick, according to by the detected operational ton of aforesaid operations testing agency, make the work feed spacing change to the position of rotation of the above-mentioned CD-ROM drive motor of above-mentioned lower limit ground control control from above-mentioned initial value.

According to the present invention 3,4, the linkage that is used for mechanically connecting control stick and hornblock in the past needn't be set, just can carry out work feed spacing control.

Therefore, owing to saved the numerous and diverse operation that is used to be provided with linkage, can increase substantially the efficiency when making.In addition, can save the manufacturing cost of removing the linkage part.

The present invention's 5, it is the cloth-feeding device of 2 described Sewing machiness according to the present invention, extremely shown in Figure 10 as Fig. 1, it is characterized in that: be provided be set in the work feed spacing when arriving above-mentioned lower limit Pd, as the arrival operational ton set mechanism (guidance panel 8) of the arrival operational ton Sl of the operational ton of control stick 6, and

Above-mentioned CD-ROM drive motor controlling organization CPU80, control the position of rotation of above-mentioned CD-ROM drive motor (impulse motor 50), so as above-mentioned control stick to be operated above-mentioned arrival operational ton from non-operating state during, the work feed spacing is changed to above-mentioned lower limit Pd from above-mentioned initial value Pu.

According to the present invention 5, can change the variable quantity of work feed spacing of the unit operation amount of control stick neatly.

Thereby, owing to can adjust the variable quantity of work feed spacing of the unit operation amount of control stick neatly according to various hobbies of making situation or user, so operability is extremely superior.For example, owing to can be with the method that strengthen to set arrives operational ton set the variable quantity of the work feed spacing of the unit operation amount of control stick little, so can inching work feed spacing.On the other hand, owing to can be with reducing to set the method that arrives operational ton set the variable quantity of the work feed spacing of the unit operation amount of control stick greatly, can promptly change the work feed spacing.

The present invention's 6, be according to the present invention 2 to 5 in the cloth-feeding device of any described Sewing machines, it is characterized in that:

Be provided with the limits value set mechanism CPU80 that can individually set each above-mentioned initial value Pu that makes figure and/or above-mentioned lower limit Pd.

According to the present invention 6, when figure is made in variation, needn't reset initial value and/or above-mentioned lower limit, its operability, repeatability superior.

The present invention's 7, be according to the present invention 1 to 6 in the cloth-feeding device of any described Sewing machines,, it is characterized in that to shown in Figure 6 as Fig. 1:

When being provided with in making action the above-mentioned control stick 6 of operation, the indication mechanism (display part 8a) of the work feed spacing that has been changed by the operation of above-mentioned control stick with real-time demonstration.

According to the present invention 7, on one side Visual Confirmation is shown in work feed spacing on the indication mechanism, manipulation bar on one side, can clock like precision carry out the control of work feed spacing.

Description of drawings

Fig. 1 is the integrally-built skeleton diagram that is used to illustrate the Sewing machines that possesses the present embodiment cloth-feeding device.

Fig. 2 is the accompanying drawing that is used to illustrate the structural element of being located at the cloth-feeding device in the Sewing machines base plate 1, is the profile of the base plate 1 of II-II part section under the state of seeing from the drawing downside of Fig. 1, Fig. 1.

Fig. 3 is the accompanying drawing that is used to illustrate the work feed transmission mechanism that constitutes cloth-feeding device, is the III-III part sectioned view that expression is configured in the upside of base plate 1 Fig. 2 of drawing upside state.

To be explanation see near the key diagram of the structure impulse motor of present embodiment cloth-feeding device from the arrow IV direction of Fig. 2 to Fig. 4.

Fig. 5 is the fragmentary, perspective view of seeing near the structure control stick of present embodiment cloth-feeding device from the arrow V direction of Fig. 1, Fig. 5 (a) is control stick 6 state (non-operating state) before of operation cloth-feeding device, and Fig. 5 (b) is the state of pressing control stick 6 from the state of Fig. 5 (a) downwards.

Fig. 6 is the calcspar of electric formation of Sewing machines that possesses the cloth-feeding device of present embodiment.

Fig. 7 is the calcspar that the 1st work feed control action of the cloth-feeding device that uses present embodiment is described.

Fig. 8 is the operating lever operation position of the 1st work feed control action of the explanation cloth-feeding device that uses present embodiment and the curve map of work feed spacing dependency relation.

Fig. 9 is the flow chart that the 2nd work feed control action of the cloth-feeding device that uses present embodiment is described.

Figure 10 is the operational ton of control stick of the 2nd work feed control action of the explanation cloth-feeding device that uses present embodiment and the curve map of work feed spacing dependency relation.

Figure 11 is the key diagram of the linkage of the control stick of connection cloth-feeding device in the past and hornblock.

Among the figure: the 1-base plate, the 2-chain-drive section, 3-shank, 4-Spindle Motor, the 5-control device, the 6-control stick, 6a-spindle unit, 6b-the 1st attaching parts, 6c-top restriction portion, 6d-below restriction portion, 6e-the 2nd attaching parts, 6f-the 3rd attaching parts, the 7-operating pedal, the 8-guidance panel, 10-lower shaft, 11-feed dog, 20-work feed bindiny mechanism, the horizontal feed eccentric of 21-, the horizontal work feed bar of 22-, the horizontal work feed connecting rod of 23-, the horizontal work feed arm of 24-, the horizontal cloth pushing shaft of 25-, 26-work feed seat arm, 27-work feed seat, 28-is the work feed connecting rod up and down, 30, the 210-hornblock, 40-work feed regulating shaft, 40a-groove, 41-the 1st work feed is regulated connecting rod, 42-the 2nd work feed is regulated connecting rod, and 43-the 3rd work feed is regulated connecting rod, 50-impulse motor, 51-drives output shaft, the 60-helical spring, 70-encoder, 80-CPU, 90-RAM, 100-ROM, 101-Sewing machines head, 110-control stick, the 120-rotating shaft, 130, the 140-block, 200-Sewing machines base plate, 300-linkage, S1, the S21-initial value reads in step, S2, the S22-lower limit is read in step, S3, S24-initial position setting step, step is read in S4-operating lever operation position, S5, S26-operating lever operation determining step, S6-instruction work feed distance computation step, the 1st spacing determining step of S7-, S8-initial value conditioning step, the 2nd spacing determining step of S9-, the S10-location of instruction is set step, S11, S30-lower limit conditioning step, S23-arrives operational ton and reads in step, S25-operating lever operation amount is read in step, S27-operational ton determining step, S28-target work feed distance computation step, step is set in the S29-target location.

The specific embodiment

Below, with reference to the description of drawings embodiments of the invention.

As shown in Figure 1, the Sewing machines of present embodiment, have: be carried on the desktop Z of band leg, and above be provided with the base plate 1 of needle plate (shown in dotted line), above base plate 1 and with base plate 1, slightly be the chain-drive section 2 that extends in parallel, the shank 3 that stretches out downwards and move up and down flexibly from the front end of chain-drive section 2, go up the motor of sewing machine 4 that axle (main shaft) and crank mechanism move up and down shank 3 by not shown, conveying is carried on the cloth-feeding device of the cloth on the base plate 1, the control device 5 of Comprehensive Control Sewing machines molar behavior, be used to operate cloth-feeding device and change the work feed spacing, can manually operated control stick 6, regulate the operating pedal 7 of motor of sewing machine 4 rotating speeds with the amount of entering into, have the setting of sending portion's spacing initial value etc. that is used to carry out cloth-feeding device and make various switches that the selection of figure sets and the guidance panel 8 of display part 8a.And above-mentioned control stick 6 is set to the method that enlarges opereating specification and makes cloth feeding direction reverse.This Sewing machines while the eedle that is contained in shank 3 front ends is moved up and down, carried cloth by cloth-feeding device to the direction of regulation by motor of sewing machine 4, is implemented stitching with this on cloth.In addition, control device 5 is by the control device of double as cloth-feeding device.

The mechanical structure of the cloth-feeding device of present embodiment at first, is described with reference to Fig. 2 to Fig. 5.Cloth-feeding device has: lower shaft 10, with rotatablely moving of lower shaft 10 pass to the work feed transmission mechanism 20 of feed dog 11, the work feed spacing of change feed dog 11 (a moving week of lower shaft 10 revolutions with the cloth feed amount of feed dog 11) hornblock 30, embed the work feed regulating shaft 40 of hornblock 30, the impulse motor 50 of the CD-ROM drive motor used as setting work feed spacing etc.

As shown in Figure 2, in base plate 1, the axle center of having installed with direction extension forwards, backwards is the lower shaft 10 that the center can rotate flexibly.Lower shaft 10 is connected with the driving output shaft of motor of sewing machine 4 by not shown linkage.Therefore, when driving motor of sewing machine 4, lower shaft 10 is also rotated by linkage.

In the anterior end of lower shaft 10, be equipped with and be configured in not shown presser feet below and can haunt feed dog 11 needle plate, that be used to carry cloth.At the rear of lower shaft 10, the work feed transmission mechanism 20 that rotatablely moving of lower shaft 10 is passed to feed dog 11 and driving feed dog 11 is installed.

In Fig. 3, work feed transmission mechanism 20 has: horizontal feed eccentric 21, horizontal work feed bar 22, horizontal work feed connecting rod 23, horizontal work feed arm 24, horizontal cloth pushing shaft 25, work feed seat arm 26, work feed seat 27, work feed connecting rod 28 etc. up and down.

Horizontal feed eccentric 21 has the eccentric cam with respect to lower shaft 10 off-centre, and this eccentric cam can be connected the upper side end of horizontal work feed bar 22 flexibly rotatably by bearing.The downside end of horizontal work feed bar 22 can be connected the left and right sides pars intermedia of horizontal work feed connecting rod 23 flexibly rotatably.

The right part of horizontal work feed connecting rod 23 can be connected the downside end of horizontal work feed arm 24 flexibly rotatably.The upper side end of horizontal work feed arm 24 is fixed on the rear end of horizontal cloth pushing shaft 25.Horizontal cloth pushing shaft 25, former rear to the axle center be under the state that rotates flexibly of center, be installed on the base plate 1, and the anterior end of horizontal cloth pushing shaft 25 is fixed on the downside end of work feed seat arm 26.The upper side end of work feed seat arm 26 can be connected the right-hand end of work feed seat 27 flexibly rotationally.

Feed dog 11 is fixed on the work feed seat 27.The left end of work feed seat 27 can be connected the upper side end of work feed connecting rod 28 up and down flexibly rotationally.The downside end of work feed connecting rod 28 up and down can be connected the anterior end of lower shaft 10 flexibly rotationally.On the other hand, hornblock 30 is connected the left end of horizontal work feed connecting rod 23.

Hornblock 30, the angle of inclination (rotational angle) that has by changing with respect to the reference position of stipulating changes the motion track of feed dog 11 and changes work feed spacing function.Hornblock 30 is embedded in the groove 40a of the front and back pars intermedia that is formed at work feed regulating shaft 40, and can from the regulation the reference position rotating certain angle, and by the regulation the work feed adjustable cap, it can not deviate from from groove 40a.

What Fig. 4 represented is the state that the upside of base plate 1 is configured in accompanying drawing paper upside.Work feed regulating shaft 40 is the center, can be installed in rotationally on the base plate 1 flexibly with the axle center of fore-and-aft direction.The upper side end that the 1st work feed is regulated connecting rod 41 is fixed on the rear end of work feed regulating shaft 40.The 1st work feed is regulated the downside end of connecting rod 41, can be connected with the left end of the 2nd work feed adjusting connecting rod 42 rotationally flexibly.The 2nd work feed is regulated the right-hand end of connecting rod 42, can be connected with the upper side end of the 3rd work feed adjusting connecting rod 43 rotationally flexibly.The 3rd work feed is regulated the downside end of connecting rod 43, is fixed on the driving output shaft 51 of impulse motor 50.

In Fig. 5, control stick 6 is installed in rotation on the chain-drive section 2 with spindle unit 6a.Can be installed in rotation on the spindle unit 6a with the 1st attaching parts 6b that control stick 6 rotates, and the 1st attaching parts 6b is subjected to helical spring 60 pulling force downwards as force application mechanism.Therefore, though the thrust that control stick 6 is subjected to rotating upward can stop it to rotate upward by the top restriction 6c of portion.And, in chain-drive section 2, also be provided with the 6d of below restriction portion that is used to limit control stick 6 manipulated variables (amount of depressing) downwards.

On spindle unit 6a, be rotatably mounted the 2nd attaching parts 6e that rotates with control stick 6 and the 1st attaching parts 6b, the upper end of the 3rd attaching parts 6f can be connected with the upper end of the 2nd attaching parts 6e flexibly rotationally.On the bottom of the 3rd attaching parts 6f, connecting the encoder 70 that detects its rotational angle.

Control stick 6 is pressed down downwards, and the 2nd, the 3rd attaching parts 6e, 6f are rotated to the counter clockwise direction of Fig. 5 successively, then just can detect the rotational angle of the 3rd attaching parts 6f by encoder 70.Consequently, can detect the operating position or the operational ton of control stick 6 indirectly by encoder 70.Encoder 70 is converted to operation signal as the signal of telecommunication of regulation with detected like this control stick 6 operating positions or operational ton, and to CPU80 output described later.The operation signal of this moment makes the work feed spacing change to negative direction along with the increase of control stick 6 operational tons.That is, encoder 70 has the function of operation detection mechanism of the present invention (operating position testing agency and operational ton testing agency).

And encoder 70 has the function of operating position testing agency, still has the function of operational ton testing agency, is to have which kind of function by the operation signal in control thereafter to be determined.The detailed aftermentioned that remains, but in the present embodiment, encoder 70 have function as operating position testing agency respectively, have the function as operational ton testing agency in the controls of the 2nd work feed in the control of the 1st work feed.

In addition, so-called the work feed spacing is changed into " negative direction ", be meant that feed dog 11 changes the meaning of work feed spacing from the state that carries out positive transfer movement gradually to carrying out contrary transfer movement state.That is, in the present embodiment, when control stick 6 is in original state shown in Fig. 5 (a), feed dog 11 is set at carries out positive transfer movement in advance.Then, the absolute value of work feed spacing of the positive transfer movement of feed dog 11 is little by little reduced, through work feed spacing nought state and towards the absolute value direction that little by little increases the work feed spacing of contrary transfer movement.

Below, the mechanical action of cloth-feeding device is described.Drive motor of sewing machine 4 by the operating pedal 7 that depresses Sewing machines, and make lower shaft 10 rotation with this, then this lower shaft 10 rotatablely moves, be delivered to horizontal cloth pushing shaft 25 by horizontal feed eccentric 21, horizontal work feed bar 22, horizontal work feed connecting rod 23 and horizontal work feed arm 24, and horizontal cloth pushing shaft 25 rotates back and forth.Then, the reciprocal rotation of horizontal cloth pushing shaft 25 passes to feed dog 11 by work feed seat arm 26 and work feed seat 27, thereby can realize feed dog 11 reciprocating motion of direction to the left and right.

On the other hand, the rotatablely moving of lower shaft 10 passes to work feed seat 27 by work feed connecting rod 28 up and down, thereby can realize being fixed on the reciprocating motion of the direction up and down of the feed dog 11 on the work feed seat 27.

Consequently, feed dog 11 is because of the reciprocating motion of direction to the left and right and the reciprocating synthetic motion of justifying to ellipse of direction up and down, and the cloth that will be pushed down from the top by presser feet, the work feed motion of carrying to the direction of regulation.

At this moment, feed dog 11, during protruding upward from needle plate, as if the motion of justifying movably from left to right to ellipse, then cloth is just carried.On the other hand, feed dog 11, during protruding upward from needle plate, as if the motion of justifying movably from right to left to ellipse, then cloth is carried by contrary.

Just carrying and contrary conversion of carrying of feed dog 11, carry out with respect to the rotation phase of the rotatable phase of lower shaft 10 by the horizontal cloth pushing shaft 25 of change, but the rotation phase of the rotatable phase of change lower shaft 10 and horizontal cloth pushing shaft 25 is to be realized by the angle of inclination that changes hornblock 30 (with respect to the rotational angle of the reference position of stipulating).That is, when the A direction was rotated, just carrying by feed dog 11 from initial position shown in Figure 3 for hornblock 30, and when the B direction was rotated, feed dog 11 carried out contrary the conveying to hornblock 30 from initial position shown in Figure 3.

In addition, no matter feed dog 11 is when just carrying or during contrary the conveying, the movement locus of feed dog 11 all be above-mentioned circle to elliptical shape, just change work feed spacing (a moving week of lower shaft 10 revolutions is by the cloth feed amount of feed dog 11) with the radius that changes left and right directions.That is, the horizontal cloth pushing shaft 25 that changes with lower shaft 10 revolutions moving by change is the scope of rotational angle of the work feed seat arm 26 of fulcrum, changes the radius of the left and right directions on the movement locus of work feed seat 27 and feed dog 11, and changes the work feed spacing thus.Concrete is that along with the increasing of hornblock 30 rotational angles, the just contrary defeated cloth feed amount (work feed spacing) that lower shaft 10 revolutions moving change is strengthened.

As mentioned above, the angle of inclination by changing hornblock 30 (from the rotational angle of the reference position of regulation) can carry out the cloth feeding direction of feed dog 11 and the change of work feed spacing.The change at the angle of inclination of hornblock 30 is undertaken by impulse motor 50.

Promptly, method with manipulation bar 6 makes impulse motor shown in Figure 4 50 actions, and make and drive output shaft 51 around the clockwise rotating of Fig. 4, at this moment, work feed regulating shaft 40 rotates to the A direction according to the order of regulating connecting rod 43,42 and 41 by the 3rd, the 2nd and the 1st work feed.On the other hand, if drive output shaft 51 to counterclockwise rotating, then work feed regulating shaft 40 rotates to the B direction according to the order of regulating connecting rod 43,42 and 41 by the 3rd, the 2nd and the 1st work feed.Like this, impulse motor 50 is regulated connecting rod 43,42 and 41, work feed regulating shaft 40 is rotated by the 3rd, the 2nd and the 1st work feed, can change the angle of inclination of hornblock 30 with this, and change the cloth feeding direction and the work feed spacing of feed dog 11.

Below, the electrical structure of the cloth-feeding device of present embodiment is described with reference to Fig. 6.

Control device 5, have: CPU (Central Processing Unit) 80, RAM (RandomAccess Memory) 90, ROM (Read Only Memory) 100 etc., and have according to being stored in various control programs among the ROM100, synthetically controlling the function of Sewing machines molar behavior.

Control device 5 is electrically connected by implementations such as not shown input interface and control stick 6, operating pedal 7, guidance panels 8.The operational ton of control stick 6 detects and is converted to electric command signal by encoder 70, sends CPU80 afterwards to.The operational ton of operating pedal 7 is electric command signal by not shown coder transitions also, sends CPU80 afterwards to.The signal of setting also is transmitted to CPU80 along with pressing the operation of being located at the various switches on the guidance panel 8.

Accepted the CPU80 of the command signal of relevant operating pedal 7 operational tons, driven motor of sewing machine 4 by not shown drive circuit, and drive to have gone up the axle rotation, shank 3 is moved up and down, that stipulates makes operation.

In addition, CPU80 according to the command signal of the operating position (operational ton) of relevant control stick 6, or by the various setting signals of guidance panel 8, comes driving pulse motor 50 and controls its position of rotation by not shown drive circuit.That is, CPU80 is a CD-ROM drive motor controlling organization of the present invention.According to make 50 rotations of driving pulse motor by CPU80, can change the angle of inclination of hornblock 30 according to the order of regulating connecting rod 43,42 and 41 by the 3rd, the 2nd and the 1st work feed, and change the work feed spacing of feed dog 11.

Be located at the various switches of (not shown) on the guidance panel 8, can set the initial value Pu and the lower limit Pd of work feed spacing by push, or the arrival operational ton Sl of control stick 6 etc.That is, console switch 9 is initial value set mechanism of the present invention, lower limit set mechanism and arrive the operational ton set mechanism.

Accepted to set by the various switches of push panel 8 CPU80 of signal, driving pulse motor 50 is also controlled its position of rotation, so that change the work feed spacing of feed dog 11 within the limits prescribed.

Concrete is, when having operated control stick 6, the position of rotation of CPU80 control impuls motor 50, so as in scope from initial value Pu to lower limit Pd, make the work feed spacing become work feed spacing corresponding to the operating position (operational ton) of control stick 6.

In addition, CPU80 is presented at rotating speed of making figure, sewing condition, making the Spindle Motor 4 in the action etc. on the display part 8a of guidance panel 8.And, when in making action, having operated control stick 6, the work feed spacing that CPU80 will be changed with manipulation bar 6, be presented on the display part 8a of guidance panel 8 in real time.That is, display part 8a is an indication mechanism of the present invention.

Next, with reference to the control action of flow chart and diagram shows cloth-feeding device of the present invention.

<the 1 work feed control action 〉

At first, with reference to the control action (the 1st work feed control action) of Fig. 7 and Fig. 8, the cloth-feeding device of explanation when setting initial values and lower limit with the various switches of guidance panel 8.In Fig. 8, the longitudinal axis is that work feed spacing (mm), the transverse axis of feed dog 11 is operating positions of control stick 6.

In addition, in this flow process,, before the power connection of control device 5 or after connecting, set initial value Pu and lower limit Pd, omitted the detailed description that this setting is handled at this by the various switches of operator's operating operation panel 8.

At first, connect the power switch and the start-up control device 5 of Sewing machines.(initial value reads in step: S1) to read in the initial value Pu of feed dog 11 work feed spacings then.In addition, so-called " initial value Pu " is in the operation of the total travel scope Sa that is meant at control stick 6, the higher limit of modifiable work feed spacing.In the present embodiment, initial value Pu is set position " 4mm " (with reference to Fig. 8).

Then, (lower limit is read in step: S2) to read in lower limit Pd.In addition, so-called " lower limit Pd " in the operation of the total travel scope Sa that is meant at control stick 6, the lower limit of modifiable work feed spacing, can suitably change according to user's hobby.In the present embodiment, lower limit Pd is set position " 3mm ".

Then, CPU80 driving pulse motor 50 is set in (initial position setting step: S3) on the position of rotation corresponding to initial value Pu with the position of rotation of impulse motor 50.

Then, CPU80 reads in operating position signal corresponding to the operating position Sb of control stick 6 (step is read in the operating lever operation position: S4).CPU80 carries out the judgement whether control stick 6 was operated according to the operating position signal of the control stick 6 that reads in this moment.That is, judge whether the operating position Sb of the control stick of being obtained with this operating position signal 6 has surpassed the judgment value of predefined regulation, and judge whether control stick 6 was operated (operating lever operation determining step: S5).

In that to judge that control stick 6 is operated out-of-date, CPU80 calculates corresponding to the work feed spacing of control stick 6 operating position Sb (below, be called " instruction work feed spacing ") Pb (instruction work feed distance computation step, instruction work feed distance computation mechanism: S6).

Computational methods as instruction work feed spacing Pb, can enumerate: obtain with the instruction work feed spacing of control stick 6 when non-operating state (with reference to Fig. 5 (a)), as upper limit instruction work feed spacing Ph, and the method for instruction work feed spacing that will be when full operation state (with reference to Fig. 5 (b)) work feed spacing of any operating position during as lower limit instruction work feed spacing Pl.Instruction work feed spacing Pb, also can calculate with Calculation Method, and will (for example be stored in memory corresponding to the instruction work feed spacing Pb of the operating position Sb of control stick 6 in advance, ROM100) in the catalogue, when manipulation bar 6, from this catalogue, read instruction work feed spacing Pb corresponding to the operating position Sb of control stick 6.

On the other hand, when being judged as control stick 6 when not being operated, carry out standby (operating lever operation determining step: S5) till control stick 6 is operated.

Then, CPU80 judges the instruction work feed spacing Pb that calculates at instruction work feed distance computation step S6, (the 1st spacing determining step: S7) more than initial value Pu whether.When being judged as instruction work feed spacing Pb in the 1st spacing determining step S7 when initial value Pu is above, CPU80 maintains (initial value conditioning step: S8) on the position of rotation corresponding to initial value Pu with the position of rotation of impulse motor 50.

In the present embodiment, the instruction work feed spacing Pb of the operating position (the scope F of Fig. 8) when being positioned at control stick 6 and beginning to operate, though, limited the work feed spacing of just carrying action by this initial value conditioning step S8 and be no more than initial value Pu (with reference to Fig. 8) corresponding to the work feed spacing bigger than initial value Pu.That is, on Fig. 8, the regional U that work feed gap ratio initial value Pu is big has become dead zone (blind area).

In the 1st spacing determining step S7, be judged as instruction work feed spacing Pb than higher limit Pu little in, whether CPU80 decision instruction work feed spacing Pb surpasses lower limit Pd (the 2nd spacing determining step: S9).

When in the 2nd spacing determining step S9, being judged as instruction work feed spacing Pb above lower limit Pd, CPU80 driving pulse motor 50 is set in the position of rotation of impulse motor 50 that (location of instruction is set step, work feed spacing driving mechanism: S10) on the position of rotation corresponding to instruction work feed spacing Pb.

In the 2nd spacing determining step S9, be judged as instruction work feed spacing Pb than lower limit Pd little in, CPU80 is set in (lower limit conditioning step: S11) on the position of rotation corresponding to lower limit Pd with the position of rotation of impulse motor 50.

The control stick in the present embodiment 6 is pressed downwardly onto with below the instruction work feed spacing of the 6d of restriction portion when being abutted against state (with reference to Fig. 5 (b)), though corresponding to the work feed spacing Pl littler than this lower limit Pd, but, can limit the work feed spacing and be not less than lower limit Pd (with reference to Fig. 8) by lower limit conditioning step S11.That is, the work feed spacing has become dead zone (blind area) less than the region D of lower limit Pd in Fig. 8.

In addition, after initial value conditioning step S8, the location of instruction are set step S10 and lower limit conditioning step S11 end, transfer to the operating lever operation position again and read in step S4, and before the Sewing machines dump, repeat the processing of operating lever operation determining step S5 to lower limit conditioning step S11.

According to above-mentioned, even at total travel scope Sa manipulation bar 6, and send the instruction that the work feed spacing is altered to lower limit instruction spacing Pl from upper limit instruction spacing Ph by the operation of control stick 6, the position of rotation of impulse motor 50 also is controlled, so that in the scope of the initial value Pu of boundary above the conduct Pd of boundary below the conduct, make the work feed spacing become instruction work feed spacing Pb corresponding to the operating position of control stick 6.

In addition, in the flow chart of Fig. 7, do not record and narrate the control action of relevant motor of sewing machine 4 for the purpose of simplifying the description, but reading in step S1 from initial value under any state of lower limit conditioning step S11, if drive motor of sewing machine 4, then carry cloth with the work feed spacing of setting constantly at this certainly.

<the 2 work feed control action 〉

Below, with reference to the control action (the 2nd work feed control action) of Fig. 9 and Figure 10, the cloth-feeding device of explanation when setting initial value Pu, lower limit Pd and arriving operational ton Sl with the various switches of guidance panel 8.In Figure 10, the longitudinal axis is that work feed spacing (mm), the transverse axis of feed dog 11 is operational tons of control stick 6.

In the 2nd work feed control action, encoder 70 has the function as operational ton testing agency.And, in the flow process of Fig. 9, also the flow process with Fig. 7 is the same, by the various switches of operator's operating operation panel 8, set initial value Pu, lower limit Pd before the power connection of control device 5 or after connecting and arrived operational ton Sl, omit the detailed description of this setting processing at this.And, also omitted explanation to the control action of motor of sewing machine 4.In addition, in the 2nd work feed control action, initial value Pu, the work feed spacing when being set to control stick 6 not operations.

At first, connect the power switch and the start-up control device 5 of Sewing machines.Then, the same with the 1st work feed control action, read in initial value Pu and lower limit Pd (initial value reads in step: S21, and lower limit read in step: S22).

Operational ton (arrival operational ton) Sl of the control stick 6 when then, reading in the work feed spacing and reach lower limit Pd (arrives operational ton and reads in step: S23).In the total travel scope Sa of control stick 6, can set neatly according to client's hobby and arrive operational ton Sl.As shown in figure 10, arrive the variable quantity that operational ton Sl can strengthen the work feed spacing of control stick 6 unit operation amounts with dwindling to set.

Then, CPU80 driving pulse motor 50 is set in (initial position setting step: S24) on the position of rotation corresponding to initial value Pu with the position of rotation of impulse motor 50.Then, CPU80 reads in that (the operating lever operation amount is read in step: S25), and the same with the 1st work feed control action, carry out judgement (the operating lever operation determining step: S26) whether control stick 6 was operated corresponding to the operation signal of the operational ton Sb of control stick 6.

When detecting the operation signal of control stick 6, CPU80 judges whether the operational ton Sb of control stick 6 arrives (operational ton determining step: S27) below the operational ton Sl.On the other hand, when not detecting the operation signal of control stick 6, transfer to the operating lever operation amount and read in step S25, and carry out standby till detecting operation signal.

When being judged as operational ton Sb for arriving operational ton Sl when following in operational ton determining step S27, CPU80 calculates work feed spacing (hereinafter referred to as " target work feed spacing ") Pa (target work feed distance computation step, target work feed distance computation mechanism: S28) corresponding to operational ton Sb according to arriving operational ton Sl etc.

In addition, the Pa computing formula in target work feed distance computation step S28 is determined by following.

Pa=Pu-(Pu-Pd)Sb/Sl

For example, when Pu=4, Pd=-3, Sb=3, Sl=7, can calculate target work feed spacing Pa=1 (with reference to Figure 10).

After target work feed distance computation step S28, CPU80 driving pulse motor 50 is set in the position of rotation of impulse motor 50 that (step is set in the target location: S29) corresponding to the position of rotation of target work feed spacing Pa and finishing control action.

In the 2nd work feed control action, calculate target work feed spacing Pa according to initial value Pu, lower limit Pd, the operational ton Sb that arrives operational ton Sl and control stick 6 in this wise, and the position of rotation of impulse motor 50 is set in position of rotation corresponding to this target work feed spacing Pa.Therefore, do not adopt step as the initial value conditioning step S8 in the 1st work feed control action, and directly calculate target work feed spacing Pa after detecting the operational ton Sb of control stick 6, and driving pulse motor 50 deducts work feed spacing corresponding to control stick 6 operational tons from the work feed spacing of initial value Pu.

On the other hand, in operational ton determining step S27, when being judged as operational ton Sb when to arrive operational ton Sl big, CPU80 is set in position of rotation corresponding to lower limit Pd and finishing control action (lower limit conditioning step: S30) with the position of rotation of impulse motor 50.

In the cloth-feeding device of the Sewing machines of present embodiment, possess the operating position or the operational ton that detect available manually operated control stick 6, and output is used to change the encoder 70 corresponding to the operation signal of the work feed spacing of the operating position of detected control stick 6 or operational ton, CPU80 as the CD-ROM drive motor controlling organization, because when having operated control stick 6, the position of rotation of energy control impuls motor 50, so that the work feed spacing is made as work feed spacing corresponding to the operating position or the operational ton of control stick 6, so the linkage that is used for mechanically connecting control stick and hornblock in the past need not be set, just can carry out the control of work feed spacing.

Therefore, owing to need not be used to be provided with numerous and diverse operation of linkage, can increase substantially the operability when making.And, can reduce the cost that does not need the linkage part.

In addition, in the cloth-feeding device of the Sewing machines of present embodiment, have the initial value Pu of setting work feed spacing and the guidance panel 8 of lower limit Pd, and, CPU80 as the CD-ROM drive motor controlling organization, because when having operated control stick 6, the position of rotation of energy control impuls motor 50, so that in scope from initial value Pu to lower limit Pd, the work feed spacing is made as work feed spacing corresponding to the operating position or the operational ton of control stick 6, so the block of machinery of movable range that is used to set control stick 6 in the past need not be set, just can in scope, change the work feed spacing from initial value Pu to lower limit Pd.

In addition, in the cloth-feeding device of the Sewing machines of present embodiment, the guidance panel 8 that possesses the operational ton (arriving operational ton Sl) of the control stick 6 when setting work feed spacing arrival lower limit Pd, and, because CPU80 as the CD-ROM drive motor controlling organization, the position of rotation of control impuls motor 50 so as only control stick 6 is operated to from non-operating state arrive operational ton Sl during, the work feed spacing is changed to lower limit Pd from initial value Pu, so can change the variable quantity of the work feed spacing of control stick 6 unit operation amounts neatly.

Therefore, owing to can adjust the variable quantity of the work feed spacing of control stick 6 unit operation amounts neatly according to various hobbies of making situation or user, so have extremely superior operability.For example, the setting by strengthen arriving operational ton Sl, can reduce to set the variable quantity of the work feed spacing of control stick 6 unit operation amounts, so can carry out the inching of work feed spacing.On the other hand, by the setting that reduces to arrive operational ton Sl, the variable quantity that can strengthen the work feed spacing of setting control stick 6 unit operation amounts, so can promptly change the work feed spacing.

In addition, though do not illustrate, but at the angle of inclination that changes hornblock by the control stick that is connected in hornblock, with the mechanical type cloth-feeding device in the past that changes the work feed spacing, the setting value of the work feed spacing during according to the not operation of control stick, when the initial operation of control stick, there is the same dead zone (blind area U :) in the 1st work feed control action with present embodiment with reference to Fig. 8.To this, different with the 1st work feed control action in the 2nd work feed control action of present embodiment, the opereating specification of control stick 6 can be effectively utilized in the dead zone (blind area U: with reference to Fig. 8) when not having the initial operation of control stick, and superior operability is arranged.

In addition, the present invention is not limited to the foregoing description certainly, and can suitably change.For example, can make figure, initial value Pu and/or lower limit Pd are recorded among the RAM90 at each.

At this moment, the user selects to make figure (straight line backspace formula stitching, 2 double diagonal stitchs) by the various switches of guidance panel 8, CPU80 automatically reads in corresponding to initial value Pu that makes figure and/or lower limit Pd among the RAM90 according to this selection, like this, when the user makes figure in conversion, need not the set symbol joint close initial value Pu and/or the lower limit Pd of drawing shape, operability, Sewing machines that repeatability is superior are provided.At this moment, CPU80 has the function of the limits value set mechanism among the present invention.

In addition, in above-mentioned the 2nd work feed control action, be provided with and set the mechanism that arrives operational ton Sl, though and this is set, arrive operational ton Sl but also can set, and the position of rotation of control impuls motor 50 makes the operational ton of control stick 6 become lower limit Pd when reaching range Sa.

In addition, in the operating lever operation determining step S26 of the flow process of Fig. 9, the same during with the operating lever operation determining step S5 of the 1st work feed control action, judge the operation that has or not control stick 6, but strengthen the judgment value of the afore mentioned rules of setting the operation of judging this control stick 6 a little, judge by accident to being operated because of the fine motion of control stick 6 preventing, can prevent that with this vibrations etc. because of Sewing machines from making control stick 6 fine motions change work feed spacing.

(invention effect)

The cloth-feeding device of 1 or 2 described sewing machines according to the present invention need not arrange as in the past For control stick is connected the linkage that connects with hornblock, just can carry out the control of work feed spacing.

Therefore, owing to do not need be used to numerous and diverse operation that linkage is set, so can carry significantly Operability during high the manufacturing. And, can reduce the cost that removes the linkage part.

And the cloth-feeding device of 1,3,4 described sewing machines according to the present invention needn't arrange Be used for the block of the machinery of setting control stick movable range, just can be at the model from the initial value to the lower limit Enclose interior change work feed spacing.

In addition, the cloth-feeding device of 2 described sewing machines according to the present invention, owing to when having operated control stick, only directly changed the work feed spacing corresponding to the operational ton part of control stick, so the blind area when not having the initial operation of control stick, the opereating specification of the control stick of can effectively applying in a flexible way

The cloth-feeding device of 5 described sewing machines according to the present invention can change control stick neatly The variable quantity of work feed spacing of unit operation amount.

Thereby, owing to can adjust neatly control stick according to various hobbies of making situation or user The variable quantity of work feed spacing of unit operation amount, so operability is extremely superior. For example, because can To arrive the method for operational ton setting with the work feed spacing of the unit operation amount of control stick by strengthening setting Variable quantity set littlely, so can inching the work feed spacing. On the other hand, because can be with reducing The method that set to arrive operational ton is set the variable quantity of the work feed spacing of the unit operation amount of control stick Greatly, so can promptly change the work feed spacing.

The cloth-feeding device of 6 described sewing machines according to the present invention is owing to can individually set every Individual initial value and/or lower limit of making figure, so when figure is made in variation, needn't be again Setting and initial value and/or above-mentioned lower limit, its operability, repeated superior.

The cloth-feeding device of 7 described sewing machines according to the present invention, Visual Confirmation shows on one side Work feed spacing on indication mechanism, manipulation bar on one side, can clock like precision carry out between work feed Apart from control.

Claims (14)

1. the cloth-feeding device of a Sewing machines has:
With the spindle machine ground interlock that drives by Spindle Motor and haunt the feed dog of the conveying cloth on the needle plate;
Change the motion track of described feed dog and the hornblock of change work feed spacing by the angle of inclination of changing with respect to the reference position of stipulating;
Change the CD-ROM drive motor at the described angle of inclination of described hornblock, it is characterized in that, be provided with:
When not operation by to a distolateral application of force and the control stick that can extend across the total travel scope and can backstitch to other end side shifting with manual operation by operation;
Detect the operation detection mechanism of operating position or the operational ton and the output function signal of described control stick;
According to described operation signal, calculate calculation mechanism corresponding to the instruction work feed spacing of described operating position or operational ton,
In operation during described control stick, for the work feed spacing being set as the CD-ROM drive motor controlling organization of controlling the position of rotation of described CD-ROM drive motor corresponding to the described instruction work feed spacing of the operating position of described control stick or operational ton.
2. the cloth-feeding device of Sewing machines according to claim 1 is characterized in that, also has:
According to described operation signal, instruct the scope of work feed spacing at the lower limit of set upper limit instruction work feed spacing and regulation, calculate calculation mechanism corresponding to the instruction work feed spacing of described operating position;
Set the initial value set mechanism of initial value;
The lower limit set mechanism of preset lower limit,
Described initial value is the higher limit of modifiable work feed spacing in the operation of the total travel scope of described control stick,
Described lower limit is the lower limit of modifiable work feed spacing in the operation of the total travel scope of described control stick.
3. the cloth-feeding device of Sewing machines according to claim 2 is characterized in that:
The operating position and the output function signal of described control stick detect in described operation detection mechanism,
Described CD-ROM drive motor controlling organization, when having operated described control stick, according to by the detected operating position of described operation detection mechanism, make the work feed spacing change the position of rotation of the described CD-ROM drive motor of ground control.
4. the cloth-feeding device of Sewing machines according to claim 2 is characterized in that:
The operational ton and the output function signal from non-operating state of described control stick detect in described operation detection mechanism,
Described CD-ROM drive motor controlling organization, when having operated described control stick, according to by the detected operational ton of described operation detection mechanism, make the work feed spacing change the position of rotation of the described CD-ROM drive motor of ground control.
5. the cloth-feeding device of Sewing machines according to claim 2 is characterized in that:
Be provided with: be set in the work feed spacing when arriving described lower limit, as the arrival operational ton set mechanism of the arrival operational ton of the operational ton of control stick, and,
Described CD-ROM drive motor controlling organization described control stick is operated described arrival operational ton from non-operating state during, makes the work feed spacing change the position of rotation of the described CD-ROM drive motor of ground control to described lower limit from described initial value.
6. according to the cloth-feeding device of claim 2 or 5 described Sewing machiness, it is characterized in that: be provided with and individually set each and make the described initial value of figure and/or the limits value set mechanism of described lower limit.
7. according to the cloth-feeding device of claim 1,2 or 5 described Sewing machiness, it is characterized in that: the indication mechanism of the work feed spacing that has been changed by the operation of described control stick when being provided with in making action the described control stick of operation, with real-time demonstration.
8. the cloth-feeding device of Sewing machines according to claim 3 is characterized in that: be provided with and can individually set each and make the described initial value of figure and/or the limits value set mechanism of described lower limit.
9. the cloth-feeding device of Sewing machines according to claim 4 is characterized in that: be provided with and can individually set each and make the described initial value of figure and/or the limits value set mechanism of described lower limit.
10. the cloth-feeding device of Sewing machines according to claim 3 is characterized in that: the indication mechanism of the work feed spacing that has been changed by the operation of described control stick when being provided with in the making action described control stick of operation, with real-time demonstration.
11. the cloth-feeding device of Sewing machines according to claim 4 is characterized in that: the indication mechanism of the work feed spacing that has been changed by the operation of described control stick when being provided with in making action the described control stick of operation, with real-time demonstration.
12. the cloth-feeding device of Sewing machines according to claim 6 is characterized in that: the indication mechanism of the work feed spacing that has been changed by the operation of described control stick when being provided with in making action the described control stick of operation, with real-time demonstration.
13. the cloth-feeding device of Sewing machines according to claim 1 is characterized in that:
The operating position and the output function signal of described control stick detect in described operation detection mechanism,
Described CD-ROM drive motor controlling organization, when having operated described control stick, according to by the detected operating position of described operation detection mechanism, make the work feed spacing change the position of rotation of the described CD-ROM drive motor of ground control.
14. the cloth-feeding device of Sewing machines according to claim 1 is characterized in that:
The operational ton and the output function signal from non-operating state of described control stick detect in described operation detection mechanism,
Described CD-ROM drive motor controlling organization, when having operated described control stick, according to by the detected operational ton of described operation detection mechanism, make the work feed spacing change the position of rotation of the described CD-ROM drive motor of ground control.
CNB031251617A 2002-05-14 2003-05-13 Cloth feeder of sewing machine CN100516337C (en)

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JP2002138392A JP3867012B2 (en) 2002-05-14 2002-05-14 Sewing machine cloth feeder

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CN100516337C true CN100516337C (en) 2009-07-22

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JP4942960B2 (en) * 2005-07-29 2012-05-30 Juki株式会社 Cloth feeder
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JP2009112501A (en) * 2007-11-06 2009-05-28 Juki Corp Sewing machine
CN101705585B (en) * 2009-10-29 2013-02-13 王志革 Automatic control system of sewing machine
JP2013202254A (en) * 2012-03-29 2013-10-07 Brother Ind Ltd Sewing machine and control program for sewing machine
JP6382600B2 (en) * 2014-06-30 2018-08-29 蛇の目ミシン工業株式会社 Sewing machine with needle swing mechanism
JP6679158B2 (en) * 2015-10-30 2020-04-15 蛇の目ミシン工業株式会社 Feed dog adjusting mechanism and sewing machine equipped with the adjusting mechanism

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JP2003326028A (en) 2003-11-18
DE10321266B4 (en) 2018-09-27
KR100993713B1 (en) 2010-11-10
TW200401061A (en) 2004-01-16
CN1458317A (en) 2003-11-26
JP3867012B2 (en) 2007-01-10
DE10321266A1 (en) 2003-12-18

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