CN104120548B - The control method of sewing machine and sewing machine - Google Patents

The control method of sewing machine and sewing machine Download PDF

Info

Publication number
CN104120548B
CN104120548B CN201410384933.5A CN201410384933A CN104120548B CN 104120548 B CN104120548 B CN 104120548B CN 201410384933 A CN201410384933 A CN 201410384933A CN 104120548 B CN104120548 B CN 104120548B
Authority
CN
China
Prior art keywords
mentioned
work feed
rotation
output shaft
sewing machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201410384933.5A
Other languages
Chinese (zh)
Other versions
CN104120548A (en
Inventor
加藤雅史
竹村彻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2011161755A external-priority patent/JP5845683B2/en
Priority claimed from JP2011162033A external-priority patent/JP2013022362A/en
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Publication of CN104120548A publication Critical patent/CN104120548A/en
Application granted granted Critical
Publication of CN104120548B publication Critical patent/CN104120548B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Sewing Machines And Sewing (AREA)

Abstract

The present invention relates to a kind of utilization Motor Drive main shaft and the sewing machine of cloth feeding mechanism and control method of sewing machine separately. Sewing machine has main motor and work feed motor. Main motor drive shaft. Main shaft moves up and down sewing needle. Work feed Motor Drive cloth feeding mechanism. The Poewr transmission mechanism of sewing machine by the output shaft of work feed motor facing one direction and rightabout each rotation action of rotating be converted to the oscillating motion once of the horizontal reciprocating swing of cloth feeding mechanism and the power of work feed motor be delivered to cloth feeding mechanism. The CPU of sewing machine detects the main anglec of rotation (S11). The main anglec of rotation is the anglec of rotation of the output shaft of main motor. CPU detects the work feed anglec of rotation (S13, S19). The work feed anglec of rotation is the anglec of rotation of the output shaft of work feed motor. CPU is by calculating by the main anglec of rotation and the work feed anglec of rotation to the rotating speed (S16, S22) of work feed motor instruction.

Description

The control method of sewing machine and sewing machine
The application is to be that on 07 24th, 2012, application number are the applying date201210258755.2, denomination of invention be sewing machine and sewing machine control method send outThe divisional application of bright patent application.
Technical field
The present invention relates to Motor Drive main shaft separately of a kind of utilization and cloth feeding mechanismThe control method of sewing machine and sewing machine.
Background technology
There are Motor Drive main shaft separately of a kind of utilization and the sewing machine of cloth feeding mechanism.Because this sewing machine can freely be controlled cloth feed amount, therefore can easily make various figureCase. 1979 No. 92444 disclosed sewing machines of communique of Japanese Unexamined Patent Publication are at work feedOn the output shaft of motor, be linked with cloth conveying teeth. Work feed motor is stepping motor.If work feed motor makes output shaft round trip within the scope of predetermined angular, cloth conveying teethAlong continuous straight runs round trip.
In the time utilizing Motor Drive main shaft separately with cloth feeding mechanism, sewing machine needsKeep the driving of main shaft and the driving of cloth feeding mechanism to synchronize. Japanese Unexamined Patent Publication 1993No. 228276 the disclosed sewing machine of communique is true according to the rotating speed of main shaft and rotatable phaseDetermine the work feed time started, and send determined according to the acceleration of cloth feed amount and main shaftThe cloth time started proofreaies and correct. Therefore, work feed starts and is sewing at reasonable timeBefore contacting with cloth, finishes by pin.
The every along continuous straight runs round trip of its cloth conveying teeth of sewing machine in the past, its work feed electricityThe output shaft of motivation is round trip within the scope of predetermined angular just. Therefore, sewing machine mustThe rotation direction that must switch continually work feed motor, acts on work feed motorLoad larger. Operator is midway changing by operating pedal etc. in work feed action sometimesBecome the rotating speed of main shaft. Work feed speed does not catch up with the rotation speed change of main shaft, the driving of main shaftWith the driving of cloth feeding mechanism synchronize generation deviation. If the driving of main shaft and cloth feeding mechanismThe synchronous generation deviation of driving, sewing quality variation. Therefore, sewing in the pastMachine cannot keep accordingly with the rotation speed change of main shaft driving and the cloth feeding mechanism of main shaftDriving synchronous.
Summary of the invention
The object of the present invention is to provide a kind of by reducing the rotation side of work feed motorTo switching frequency and can keep accordingly driving of main shaft with the rotation speed change of main shaftMoving sewing machine of synchronizeing with the driving of cloth feeding mechanism and the control method of sewing machine.
The sewing machine of technical scheme 1 has: main motor, it has main output shaft, logicalCross and make above-mentioned main output shaft rotate to drive the main shaft that sewing needle is moved up and down; Work feedMotor, it has work feed output shaft, makes above-mentioned work feed output shaft rotation; And sendCloth mechanism, it makes above-mentioned work feed output shaft rotation by above-mentioned work feed motor and along waterSquare to work feed, wherein, this sewing machine has: work feed Poewr transmission mechanism, it is logicalCross by above-mentioned work feed output shaft facing one direction and rightabout rotate each rotationAction is converted to the oscillating motion once of the horizontal reciprocating swing of above-mentioned cloth feeding mechanism and transmitsTo above-mentioned cloth feeding mechanism; Main anglec of rotation test section, it is for detection of above-mentioned main outputThe anglec of rotation of axle i.e. the main anglec of rotation; Work feed anglec of rotation test section, it is for inspectionThe anglec of rotation of surveying above-mentioned work feed output shaft is the work feed anglec of rotation; Speed calculating part,Its by the above-mentioned main anglec of rotation that uses above-mentioned main anglec of rotation test section and detect andThe above-mentioned work feed anglec of rotation that above-mentioned work feed anglec of rotation test section detects calculate toThe rotating speed of above-mentioned work feed motor instruction; And drive control part, it is with above-mentioned speedThe above-mentioned rotating speed that calculating part calculates drives controls above-mentioned work feed motor, by means of upperStating work feed Poewr transmission mechanism swings above-mentioned cloth feeding mechanism. Sewing machine often makes work feed defeatedShaft comes and goes and rotates once, can level come and go twice of driving cloth feeding mechanism. With often makeWork feed output shaft comes and goes to rotate once to come and go and drives cloth feeding mechanism sewing in the past onceMachine is compared, and the switching frequency of the rotation direction of work feed motor reduces. Therefore, effectLoad on work feed motor reduces. Sewing machine is by using the main anglec of rotation and sendingThe cloth anglec of rotation is calculated rotating speed, thereby can keep driving and the cloth feeding mechanism of main shaftDriving synchronous. Therefore, sewing machine can reduce the rotation direction of work feed motorSwitching frequency, and, can suitably keep the driving of main shaft and driving of cloth feeding mechanismMoving synchronous.
The sewing machine of technical scheme 2 also has: during judging part, it is to being above-mentioned work feedPoewr transmission mechanism by above-mentioned work feed output shaft facing one direction and rightabout turnMoving each rotation action is converted to the swing fortune of the round trip of above-mentioned cloth feeding mechanismDuring before reversing in during moving, as the swaying direction of above-mentioned cloth feeding mechanismBetween reversion in earlier stage, or as judging between the reversion later stage during reversion afterwards;Variable quantity judging part, its judging part during above-mentioned was judged as YES between the above-mentioned reversion later stageTime, the variable quantity of the velocity variations of the above-mentioned rotating speed that above-mentioned speed calculating part is calculatedWhether being greater than threshold values judges; And variable quantity limit processed portion, it is at above-mentioned variable quantityWhen judging part is judged as above-mentioned variable quantity and is greater than above-mentioned threshold values, calculate and make above-mentioned variable quantityFor the rotating speed below above-mentioned threshold values and be set as after the velocity variations of above-mentioned work feed motorRotating speed. The swaying direction of cloth feeding mechanism carries out towards one with high speed at work feed output shaftThe reversion midway of each rotation action that individual direction and rightabout rotate. Therefore, sometimesSpeed calculating part calculates and differs greatly before and after the reversion of the swaying direction of cloth feeding mechanismSpeed. If the velocity variations that work feed motor produces sharply in rotation can be bornLarger load. Sewing machine can be set the rotating speed of work feed motor and make the change of rotating speedChange amount becomes below threshold values. Therefore, sewing machine can prevent because of rotating speed variation sharplyAnd make work feed motor bear larger load.
In the sewing machine of technical scheme 3, above-mentioned speed calculating part has: speed before reversionDegree calculating part, when its judging part during above-mentioned is judged as YES between above-mentioned reversion in earlier stage,By using the above-mentioned main anglec of rotation that above-mentioned main anglec of rotation test section detects and upperStating the above-mentioned work feed anglec of rotation that work feed anglec of rotation test section detects calculates upwardsState the rotating speed of work feed motor instruction; And speed calculating part after reversion, it is above-mentionedWhen judging part is judged as YES between the above-mentioned reversion later stage during this time, by using above-mentioned main rotationThe above-mentioned main anglec of rotation that angle test section detects and the above-mentioned work feed anglec of rotation detectThe above-mentioned work feed anglec of rotation that portion detects is calculated to the instruction of above-mentioned work feed motorRotating speed. Sewing machine uses respectively main rotation before and after the swaying direction reversion of cloth feeding mechanismAngle and the work feed anglec of rotation are calculated the rotating speed of work feed motor. Sewing machine calculatesEach situation (cloth feed amount, work feed time before and after reversing with the swaying direction of cloth feeding mechanismDeng) corresponding suitable rotating speed. Therefore, sewing machine can keep two motor sameStep. Because sewing machine all keeps two motor in the outlet of cloth feeding mechanism, loopSynchronously, therefore can keep more reliably two motor synchronous.
The sewing machine of technical scheme 4 also has: work feed angle on target configuration part, its basisThe above-mentioned main anglec of rotation that above-mentioned main anglec of rotation test section detects is set above-mentioned work feedThat output shaft should be positioned at, corresponding with the above-mentioned main anglec of rotation target anglec of rotation;And work feed deviation calculating part, its calculate above-mentioned work feed angle on target configuration part setAbove-mentioned the sending that the above-mentioned target anglec of rotation and above-mentioned work feed anglec of rotation test section detectDeviation between the cloth anglec of rotation; Above-mentioned speed calculating part has according to above-mentioned work feed inclined to one sideThe above-mentioned deviation that poor calculating part calculates is calculated and is upwards stated first of work feed motor instructionThe First Speed calculating part of rotating speed. Even if the rotating speed of main shaft changes, work feed is electronicMachine also keeps synchronously rotating with main motor. Therefore, though sewing speed send outChanging, sewing machine also can suitably keep the driving of main shaft and driving of cloth feeding mechanismMoving synchronous. Sewing machine manually makes main shaft turn in the time that main motor stops or operatorWhen moving, also can suitably keep work feed motor to synchronize with main motor.
The sewing machine of technical scheme 5 also has: major heading angle initialization portion, it is according to upperState the above-mentioned work feed anglec of rotation that work feed anglec of rotation test section detects and set above-mentioned masterThat output shaft should be positioned at, corresponding with the above-mentioned work feed anglec of rotation target anglec of rotation;And main deviation calculating part, it calculates above-mentioned that above-mentioned major heading angle initialization portion setsThe above-mentioned main anglec of rotation that the target anglec of rotation and above-mentioned main anglec of rotation test section detectDeviation between degree; Above-mentioned speed calculating part has according to above-mentioned main deviation calculating part meterThe above-mentioned deviation calculating calculate upwards state the instruction of work feed motor the first rotating speed firstSpeed calculating part. Even if the rotating speed of main shaft changes, work feed motor also keep withMain motor synchronously rotates. Therefore, even if sewing speed changes, seamThe machine of threading also can suitably keep the driving of main shaft and the driving of cloth feeding mechanism to synchronize. SeamThe machine of threading also can in the time that main motor stops or in the time that operator manually makes main shaft rotateSuitably keep work feed motor to synchronize with main motor.
The sewing machine of technical scheme 6 also has: reverse angle acquisition unit, it obtains conductAbove-mentioned main output shaft once arrives the backward position of swaying direction on above-mentioned cloth feeding mechanismThe reverse angle of the moment main anglec of rotation that should be positioned at; Main anglec of rotation surplus meterCalculation portion, the above-mentioned reverse angle that it obtains according to above-mentioned reverse angle acquisition unit and above-mentionedThe above-mentioned main anglec of rotation that main anglec of rotation test section detects, calculates until above-mentioned masterOutput shaft reaches the residue anglec of rotation of above-mentioned reverse angle; Speed acquisition unit, it obtainsGet the i.e. main rotating speed of rotating speed of above-mentioned main motor; Time Calculation portion, it is according to above-mentioned masterThe above-mentioned residue anglec of rotation and above-mentioned speed that anglec of rotation surplus calculating part calculates obtainThe above-mentioned main rotating speed that the portion of getting obtains, calculates until above-mentioned main output shaft reaches above-mentioned reversionThe time that angle is required; And work feed anglec of rotation surplus calculating part, it is according to above-mentionedThe above-mentioned work feed anglec of rotation that work feed anglec of rotation test section detects, calculates above-mentioned sendingCloth motor until above-mentioned cloth feeding mechanism arrives the residue anglec of rotation of above-mentioned backward positionDegree; Above-mentioned speed calculating part has the above-mentioned Time Calculation of the above-mentioned work feed motor of calculatingThe above-mentioned required time that portion calculates rotates above-mentioned work feed anglec of rotation surplus calculating part meterThe second speed calculating part of required the second rotating speed of the above-mentioned residue anglec of rotation that calculates.Cloth feeding mechanism arrives the moment of backward position and the output shaft of main motor reaches angle of twistThe moment of degree is consistent. Therefore,, even if sewing speed changes, sewing machine also canSuitably keep the driving of main shaft and the driving of cloth feeding mechanism to synchronize. Sewing machine is at main shaftSpeed also can keep exactly two motor synchronous while increasing.
The sewing machine of technical scheme 7 and 8 also has: reverse angle acquisition unit, it obtainsOn above-mentioned cloth feeding mechanism, once arrive the reversion of swaying direction as above-mentioned main output shaftThe reverse angle of the main anglec of rotation that the moment of position should be positioned at; More than the main anglec of rotationAmount calculating part, its above-mentioned reverse angle of obtaining according to above-mentioned reverse angle acquisition unit withThe above-mentioned main anglec of rotation that above-mentioned main anglec of rotation test section detects, calculate until onState the residue anglec of rotation that main output shaft reaches above-mentioned reverse angle; Speed acquisition unit,It obtains the i.e. main rotating speed of rotating speed of above-mentioned main motor; Time Calculation portion, it is according to upperState the above-mentioned residue anglec of rotation and above-mentioned speed that main anglec of rotation surplus calculating part calculatesThe above-mentioned main rotating speed that degree acquisition unit is obtained, calculates until above-mentioned main output shaft reaches above-mentionedThe time that reverse angle is required; And work feed anglec of rotation surplus calculating part, its basisThe above-mentioned work feed anglec of rotation that above-mentioned work feed anglec of rotation test section detects, in calculatingState work feed motor until above-mentioned cloth feeding mechanism arrives the residue of above-mentioned backward position revolvesGyration; Above-mentioned speed calculating part also has the above-mentioned work feed motor of calculating and uses when above-mentionedBetween the above-mentioned required time that calculates of calculating part rotate above-mentioned work feed anglec of rotation surplus meterThe second speed meter of required the second rotating speed of the above-mentioned residue anglec of rotation that calculation portion calculatesCalculation portion, above-mentioned drive control part also has: the first judging part, it obtains above-mentioned speedWhether the above-mentioned main rotating speed that the portion of getting obtains is that the first threshold values judges below; First drivesMoving portion, it is judged as above-mentioned main rotating speed at above-mentioned the first judging part is above-mentioned the first threshold valuesWhen following, above-mentioned the first rotating speed calculating with above-mentioned First Speed calculating part drivesState work feed motor; And second drive division, it is judged as at above-mentioned the first judging partWhen above-mentioned main rotating speed is greater than afore mentioned rules value, at least according to above-mentioned second speed calculating partAbove-mentioned the second rotating speed calculating drives above-mentioned work feed motor. Sewing machine can basisThe anglec of rotation that the anglec of rotation that output shaft should be positioned at and this output shaft are physically located in itBetween deviation calculate the rotating speed (First Speed) of work feed motor. Sewing machine can basisThe rotating speed of main motor calculates the rotating speed (second speed) of work feed motor. Adopt firstSpeed, sewing machine manually makes main shaft rotate in the time that main motor stops or operatorTime also can suitably keep work feed motor to synchronize with main motor. If consideredSecond speed, sewing machine also can keep exactly two in the time that the speed of main shaft increasesIndividual motor synchronous. Sewing machine changes work feed motor according to the rotating speed of main motorControl method, thus can more suitably drive cloth feeding mechanism.
In the sewing machine of technical scheme 9 and 10, above-mentioned speed calculating part also has: theThree speed calculating parts, its calculate according to above-mentioned First Speed calculating part above-mentioned firstAbove-mentioned the second rotating speed that rotating speed and above-mentioned second speed calculating part calculate calculates upwards to be statedThe 3rd rotating speed of work feed motor instruction; And second judging part, it is to above-mentioned speedWhether the above-mentioned main rotating speed that acquisition unit is obtained is less than as the value that is greater than above-mentioned the first threshold valuesThe second threshold values judge; Above-mentioned third speed calculating part is larger with above-mentioned main rotating speed,Make the larger mode of ratio that above-mentioned the second rotating speed accounts for above-mentioned the 3rd rotating speed calculate above-mentionedThree rotating speeds, are judged as above-mentioned main rotating speed at above-mentioned the first judging part and are greater than above-mentioned the first valveWhen value and above-mentioned the second judging part are judged as above-mentioned main rotating speed and are less than the second threshold values, above-mentionedAbove-mentioned the 3rd rotating speed that the second drive division calculates with above-mentioned third speed calculating part drivesAbove-mentioned work feed motor. Sewing machine is larger with main rotating speed, make the second rotating speed account for the 3rd turnsCutting of speed closed larger mode and calculated. Therefore, sewing machine can be with more applicableRotating speed in the rotating speed of main motor drives work feed motor.
The sewing machine of technical scheme 11 also has the swing that can set above-mentioned cloth feeding mechanismThe configuration part of the backward position of direction. Operator can free setting cloth feed amount. SewingThe cloth feed amount that machine can be set according to operator is suitably controlled the action of cloth feeding mechanism.
In the sewing machine of technical scheme 12, above-mentioned cloth feeding mechanism has horizontal supporting and sendThe cloth pushing table of cloth tooth, above-mentioned work feed Poewr transmission mechanism has horizontal feed axle, this waterOne end of flat conveying axis is connected with above-mentioned work feed output shaft by means of work feed linkageKnot, the other end is connected by means of the first connecting elements and above-mentioned cloth pushing table, by withBeing rotated linkedly by the electric motor driven rotation of above-mentioned work feed of above-mentioned work feed output shaft is nextThe conveying action of giving above-mentioned cloth pushing table horizontal direction, above-mentioned work feed linkage has:Horizontal force arm, above-mentioned distolateral orthogonal establishing of its one end and above-mentioned horizontal feed axlePut; And switching mechanism, its by above-mentioned work feed output shaft facing one direction and phaseEach rotation action of counter-rotation is converted to centered by above-mentioned horizontal feed axle and makesOscillating motion once of the other end reciprocating swing of stating horizontal force arm and power is passedBe delivered to above-mentioned horizontal feed axle. Work feed Poewr transmission mechanism by work feed output shaft towardsEach rotation that direction and rightabout rotate be converted to taking horizontal feed axle as inOscillating motion once of the other end reciprocating swing that the heart makes horizontal force arm and by powerBe delivered to horizontal feed axle. If the other end reciprocating swing of horizontal force arm is once,Horizontal feed axle comes and goes and rotates once. If coming and going, horizontal feed axle rotates once,Cloth pushing table along continuous straight runs comes and goes and moves once. Therefore, sewing machine can be defeated by work feedShaft facing one direction and the rightabout each rotation of rotating be converted to cloth pushing tableMoving horizontally of round trip, the therefore switching frequency of the rotation direction of work feed motorReduce. Therefore, sewing machine can cutting by the rotation direction of minimizing work feed motorChange frequency and reduce the load acting on work feed motor.
In the sewing machine of technical scheme 13, above-mentioned switching mechanism has: the first levelArm, its one end and the orthogonal link of above-mentioned work feed output shaft; And second horizontal arm section,Its with the mode that can rotate respectively with the other end of above-mentioned the first horizontal arm section and above-mentionedThe above-mentioned other end of horizontal force arm is connected. Work feed Poewr transmission mechanism by means ofThe first horizontal arm section and the second horizontal arm section by the driving shaft of work feed motor towards oneEach rotation that individual direction and rightabout rotate is converted to another that makes horizontal force armThe oscillating motion once of end reciprocating swing. Therefore, sewing machine can utilize the first levelArm and the second horizontal arm section form work feed Poewr transmission mechanism simply.
In the sewing machine of technical scheme 14, by above-mentioned work feed output shaft as the nextPut rotating towards an above-mentioned direction and rightabout as above-mentioned work feed output shaftWhen in each slewing area the centre position, the above-mentioned other end of above-mentioned horizontal force armBe positioned at one end of movable range, this position is above-mentioned the first horizontal arm section and above-mentioned secondHorizontal arm section is rotated and is made the first horizontal arm section by the rotation of above-mentioned work feed output shaftWith above-mentioned the second horizontal arm section position on same straight line roughly each other. Sewing machine existsBy work feed output shaft make the first horizontal arm section and the second horizontal arm section each other roughly withPosition on one straight line is during as centre position, the other end position of its horizontal force armIn one end of movable range. Sewing machine changes the pendulum of horizontal force arm in centre positionMoving direction. If work feed output shaft rotation, sewing machine changes cloth pushing table in centre positionMoving direction. Therefore, sewing machine can be by work feed output shaft facing one directionAnd each rotation that rightabout rotates is converted to taking centre position as central authorities make cloth pushing table waterThe flat moving movement moving once that comes and goes.
In the sewing machine of technical scheme 15, when above-mentioned cloth pushing table is positioned at horizontal directionWhile carrying one end of actuating range, above-mentioned work feed output shaft is positioned at above-mentioned centre position.In the time that cloth pushing table starts work feed from one end of conveying actuating range, starting the defeated of work feedSend one end of actuating range to act on the load maximum on work feed motor. Sewing machine existsCentre position makes work feed motor facing one direction or rightabout is rotated further. SeamThe machine of threading, can by one end as the conveying actuating range of cloth pushing table using centre positionUnder the state being rotated further at work feed motor, start work feed. Therefore, sewing machine canReduce and in the time that one end of conveying actuating range starts work feed, act on work feed electricity at cloth pushing tableLoad in motivation.
In the sewing machine of technical scheme 16, above-mentioned switching mechanism has feed eccentric,This feed eccentric is arranged on above-mentioned work feed output shaft, with above-mentioned work feed output shaftOn curved surface corresponding to the anglec of rotation, have at least one protuberance, raised part acts onState the above-mentioned other end of horizontal force arm. Work feed Poewr transmission mechanism utilizes work feed protrudingWheel by the driving shaft of work feed motor facing one direction and rightabout rotate eachRotation is converted to and centered by horizontal feed axle, makes the other end of horizontal force arm come and goSwing oscillating motion once. Therefore, sewing machine can reduce for forming work feed movingThe parts of force transfer mechanism.
The sewing machine of technical scheme 17 and 18 has: carry up and down motor, it hasCarry up and down output shaft, make the above-mentioned output shaft rotation of carrying up and down; And carry up and downPoewr transmission mechanism, its by above-mentioned carry up and down output shaft facing one direction and phaseEach rotation action of counter-rotation is converted to above-mentioned cloth feeding mechanism and swings up and down oneInferior oscillating motion and be delivered to above-mentioned cloth feeding mechanism; Above-mentioned upper and lower transmitting power transmissionMechanism has upper and lower conveying axis, and one end of this upper and lower conveying axis is by means of the company of conveying up and downLinkage and the above-mentioned output shaft of carrying are up and down connected, and the other end is by means of the second connectionMember and above-mentioned cloth pushing table are connected, by with above-mentioned carry up and down output shaft by upperState and carry up and down electric motor driven rotation to rotate linkedly to give on above-mentioned cloth pushing tableThe conveying action of lower direction, above-mentioned upper and lower conveying connection rod mechanism has: upper and lower actuation armPortion, an above-mentioned distolateral orthogonal setting of its one end and above-mentioned upper and lower conveying axis; And onLower switching mechanism, its by above-mentioned carry up and down output shaft facing one direction and on the contraryEach rotation that direction is rotated be converted to centered by above-mentioned upper and lower conveying axis, make above-mentioned upper and lowerThe oscillating motion once of other end reciprocating swing of effect arm and power is delivered toState upper and lower conveying axis. Upper and lower transmitting power transmission mechanism will be carried the court of output shaft up and downEach rotation of rotating to a direction and rightabout be converted to taking upper and lower conveying axis as inOscillating motion once of the other end reciprocating swing that the heart makes to act on up and down arm and by powerBe delivered to upper and lower conveying axis. If act on up and down the other end reciprocating swing of arm once,Upper and lower conveying axis comes and goes and rotates once. If coming and going, upper and lower conveying axis rotates once,Cloth pushing table comes and goes and moves once along the vertical direction. Therefore, sewing machine can be by defeated up and downSend output shaft facing one direction and rightabout rotate each rotation be converted to work feedMoving up and down of platform round trip, therefore can reduce the rotation of carrying up and down motorThe switching frequency of direction. Therefore, sewing machine can be carried motor up and down by reducingThe switching frequency of rotation direction reduce to act on and carry up and down negative on motorLotus.
The sewing machine of technical scheme 19 has: work feed motor, it has work feed outputAxle, makes above-mentioned work feed output shaft rotation; And cloth feeding mechanism, it is by above-mentioned work feedMotor makes above-mentioned work feed output shaft rotation and along continuous straight runs work feed, wherein, and this seamThe facility of threading have work feed Poewr transmission mechanism, and this work feed Poewr transmission mechanism is by above-mentioned work feedOutput shaft facing one direction and rightabout rotate each rotation action be converted toState the oscillating motion once of the horizontal reciprocating swing of cloth feeding mechanism and be delivered to above-mentioned cloth feed machineStructure, above-mentioned work feed Poewr transmission mechanism has horizontal feed axle, this horizontal feed axleOne end is connected by means of work feed linkage and above-mentioned work feed output shaft, and the other end is borrowedHelp the first connecting elements and above-mentioned cloth pushing table is connected, by with above-mentioned work feed outputAxle rotate linkedly to give above-mentioned work feed by the electric motor driven rotation of above-mentioned work feedThe conveying action of platform horizontal direction, above-mentioned work feed linkage has: horizontal force armPortion, an above-mentioned distolateral orthogonal setting of its one end and above-mentioned horizontal feed axle; And turnConverting mechanism, its by above-mentioned work feed output shaft facing one direction and rightabout rotateEach rotation action be converted to centered by above-mentioned horizontal feed axle and make above-mentioned horizontal forceOscillating motion once of the other end reciprocating swing of arm and power is delivered to above-mentioned waterFlat conveying axis. Work feed Poewr transmission mechanism is converted to the round rotation of work feed output shaftMake horizontal force arm twice of other end reciprocating swing oscillating motion and power is passedBe delivered to above-mentioned horizontal feed axle. If the other end reciprocating swing twice of horizontal force arm,Horizontal feed axle comes and goes and rotates twice. If coming and going, horizontal feed axle rotates twice,Cloth feeding mechanism along continuous straight runs comes and goes mobile twice. Therefore, sewing machine can be by work feedThe round rotation of output shaft is converted to twice move horizontally of coming and going of cloth feeding mechanism, because ofThis can reduce the switching frequency of the rotation direction of work feed motor. Therefore, sewing machineCan reduce and act on by the switching frequency of the rotation direction of minimizing work feed motorLoad on work feed motor.
In the sewing machine of technical scheme 20, above-mentioned switching mechanism has: the first levelArm, its one end and the orthogonal link of above-mentioned work feed output shaft; And second horizontal arm section,Its with the mode that can rotate respectively with the other end of above-mentioned the first horizontal arm section and above-mentionedThe above-mentioned other end of horizontal force arm is connected; By above-mentioned work feed output shaft asUpper/lower positions turns towards an above-mentioned direction and rightabout as above-mentioned work feed output shaftWhen in moving each slewing area the centre position, above-mentioned horizontal force arm above-mentioned anotherOne end is positioned at one end of movable range, and this position is above-mentioned the first horizontal arm section and above-mentionedThe second horizontal arm section rotates by the rotation of above-mentioned work feed output shaft first level that makesArm and above-mentioned the second horizontal arm section be the position on same straight line roughly each other. SewingMachine makes the first horizontal arm section and the second horizontal arm section each other greatly the work feed output shaftWhile causing position on same straight line as centre position, the other end of horizontal force armBe positioned at one end of movable range. Sewing machine changes horizontal force arm in centre positionSwaying direction. If work feed output shaft rotation, sewing machine changes work feed in centre positionThe moving direction of platform. Therefore, sewing machine can by work feed output shaft towards a sideTo and rightabout rotate each rotation be converted to taking centre position as central authorities make cloth pushing tableLevel comes and goes mobile moving movement once.
The sewing machine of technical scheme 21 has: carry up and down motor, it has up and downCarry output shaft, make the above-mentioned output shaft rotation of carrying up and down; And upper and lower transmitting powerTransmission mechanism, its by above-mentioned carry up and down output shaft facing one direction and phase negative sideBeing converted to above-mentioned cloth feeding mechanism to each rotation action of rotating swings once up and downOscillating motion and be delivered to above-mentioned cloth feeding mechanism; Above-mentioned upper and lower transmitting power transmission mechanismHave upper and lower conveying axis, one end of this upper and lower conveying axis is by means of upper and lower conveying connection rod machineStructure and the above-mentioned output shaft of carrying are up and down connected, and the other end is by means of the second connecting elementsBe connected with above-mentioned cloth pushing table, by with above-mentioned carry up and down output shaft by above-mentionedThe electric motor driven rotation of lower conveying rotates to give above-mentioned cloth pushing table upper and lower linkedlyTo conveying action, above-mentioned upper and lower conveying connection rod mechanism has: act on up and down arm,An above-mentioned distolateral orthogonal setting of its one end and above-mentioned upper and lower conveying axis; Underarm on firstPortion, its one end and above-mentionedly carry up and down the orthogonal link of output shaft; And underarm on secondPortion, its with the mode that can rotate respectively with above-mentioned first on lower arm part the other end andThe above-mentioned other end that acts on up and down arm is connected; By the above-mentioned output shaft of carrying up and downAs upper/lower positions as above-mentioned carry up and down output shaft towards an above-mentioned direction and phaseWhen in each slewing area of counter-rotation the centre position, the above-mentioned arm that acts on up and downThe above-mentioned other end be positioned at one end of movable range, this position is underarm on above-mentioned firstIn portion and above-mentioned second, lower arm part is rotated by above-mentioned rotation of carrying up and down output shaftAnd make on above-mentioned first in lower arm part and above-mentioned second lower arm part each other roughly with alwaysPosition on line. Upper and lower transmitting power transmission mechanism will be carried coming and going of output shaft up and downRotation is converted to the oscillating motion of twice of the other end reciprocating swing that makes to act on up and down armAnd power is delivered to above-mentioned upper and lower conveying axis. If it is past to act on up and down the other end of armReturn and swing twice, upper and lower conveying axis comes and goes and rotates twice. If upper and lower conveying axis comes and goesRotate twice, cloth pushing table comes and goes mobile twice along the vertical direction. Therefore, sewing machineThe round rotation of carrying up and down output shaft can be converted to coming and going twice of cloth pushing tableMove up and down, therefore can reduce the switching of the rotation direction of carrying up and down motor frequentlyRate. Therefore, sewing machine can be by reducing the rotation direction of carrying up and down motorSwitching frequency reduces and acts on the load of carrying up and down on motor.
The control method of the sewing machine of technical scheme 22 is carried out by sewing machine, this sewing machineHave: main motor, it has main output shaft, by above-mentioned main output shaft is rotatedDrive the main shaft that sewing needle is moved up and down; Work feed motor, it is defeated that it has work feedShaft, makes above-mentioned work feed output shaft rotation; Cloth feeding mechanism, its along continuous straight runs work feed;And work feed Poewr transmission mechanism, its power by above-mentioned work feed motor is delivered toState cloth feeding mechanism; Wherein, the control method of this sewing machine comprises the following steps: main revolvingGyration detecting step, it detects the i.e. main anglec of rotation of the anglec of rotation of above-mentioned main output shaftDegree; Work feed anglec of rotation detecting step, it detects the anglec of rotation of above-mentioned work feed output shaftDegree is the work feed anglec of rotation; Determining step during this time, it is to being the transmission of above-mentioned work feed powerMechanism by above-mentioned work feed output shaft facing one direction and rightabout rotate respectively turnAction is converted to the swing fortune of the round trip in the horizontal direction of above-mentioned cloth feeding mechanismDuring moving, as before the swaying direction reversion of the level of above-mentioned cloth feeding mechanismBetween reversion during this time in earlier stage, or as entering between the reversion later stage during reversion afterwardsRow judgement; Speed calculation procedure before reversion, it judges in determining step during above-mentionedFor being between above-mentioned reversion early stage time, by using at above-mentioned main anglec of rotation detecting stepIn the above-mentioned main anglec of rotation that detects and in above-mentioned work feed anglec of rotation detecting stepThe above-mentioned work feed anglec of rotation detecting is calculated turning to above-mentioned work feed motor instructionSpeed; And speed calculation procedure after reversion, it judges in determining step during above-mentionedFor being between the above-mentioned reversion later stage time, by using at above-mentioned main anglec of rotation detecting stepIn the above-mentioned main anglec of rotation that detects and in above-mentioned work feed anglec of rotation detecting stepThe above-mentioned work feed anglec of rotation detecting is calculated turning to above-mentioned work feed motor instructionSpeed. Sewing machine often makes work feed output shaft come and go rotation once, can level come and go drivingTwice of cloth feeding mechanism. Come and go the once round work feed that drives of rotation with often making work feed output shaftMechanism's sewing machine in the past is once compared, the switching of the rotation direction of work feed motorFrequency reduces. Therefore the load, acting on work feed motor reduces. Sewing machine existsBefore and after the swaying direction reversion of cloth feeding mechanism, use respectively the main anglec of rotation and work feed rotationAngle is calculated the rotating speed of work feed motor. Therefore, sewing machine can calculate and sendEach situation (cloth feed amount, work feed time etc.) before and after the swaying direction reversion of cloth mechanismCorresponding suitable rotating speed. Sewing machine is by using the main anglec of rotation and the work feed anglec of rotationDegree calculates rotating speed, thereby can keep the driving of main shaft and the driving of cloth feeding mechanism togetherStep. Therefore, sewing machine can reduce the switching frequency of the rotation direction of work feed motor,And, can suitably keep the driving of main shaft and the driving of cloth feeding mechanism to synchronize.
Brief description of the drawings
Fig. 1 is the stereogram of sewing machine 1.
Fig. 2 is near sewing needle 8 amplification stereogram with needle plate 15.
Fig. 3 is that work feed motor 23, cloth feeding mechanism 32, power are observed in oblique rear from a left sideThe stereogram of transmission mechanism 35.
Fig. 4 is sending of work feed output shaft 24 state that is positioned at the centre position of slewing areaThe stereogram of cloth motor 23, cloth feeding mechanism 32, Poewr transmission mechanism 35.
Fig. 5 is the work feed electricity of work feed output shaft 24 state that is positioned at the front end of slewing areaThe stereogram of motivation 23, cloth feeding mechanism 32, Poewr transmission mechanism 35.
Fig. 6 is the work feed electricity of work feed output shaft 24 state that is positioned at the rear end of slewing areaThe stereogram of motivation 23, cloth feeding mechanism 32, Poewr transmission mechanism 35.
Fig. 7 is the block diagram that represents the electrical structure of sewing machine 1.
Fig. 8 is that cloth feed amount is set the flow chart of processing.
Fig. 9 is the flow chart of First Speed control processing.
Figure 10 is the flow chart of confirming operation processing.
Figure 11 is the flow chart of second speed control processing.
Figure 12 is the flow chart of third speed control processing.
Figure 13 is the flow chart of four-speed degree control processing.
Figure 14 is the flow chart of First Speed computing.
Figure 15 is the flow chart of second speed computing.
Figure 16 is the stereogram that represents the action of Poewr transmission mechanism 60.
Figure 17 is the stereogram that represents the action of Poewr transmission mechanism 60.
Figure 18 is the stereogram that represents the action of Poewr transmission mechanism 60.
Figure 19 is the stereogram of Poewr transmission mechanism 35,80 peripheries.
Figure 20 is the figure that represents the motion flow of Poewr transmission mechanism 80.
Figure 21 is the figure that represents the further part of Figure 20.
Detailed description of the invention
With reference to the accompanying drawings of the first embodiment of the present invention. The paper upside of Fig. 1, underSide, right side, left side, face side, rear side be respectively sewing machine 1 upside, downside,Right side, left side, front side, rear side.
Sewing machine 1 has support portion 2, column sections 3, horn portion 4. Support portion 2 is seamsThe thread pedestal of machine 1. Support portion 2 is installed on the recess of the upper surface of workbench 20 from top(omitting diagram). Column sections 3 is extended to vertical top from the right-hand member of support portion 2. HornPortion 4 extends to left from the upper end of column sections 3, relative with the upper surface of support portion 2. MachineArm 4 is provided with presser feet 17 below left part. Horn portion 4 maintains shank in inside7, shank 7 is provided with sewing needle 8 (with reference to Fig. 2) in lower end. Shank 7 and sewing needle 8Move up and down along with the driving of main motor 13. Horn portion 4 is in front, left partHave thread take-up tension lever 9, thread take-up tension lever 9 moves up and down linkedly with shank 7. Horn portion 4 is upperPortion has operating portion 10, and operating portion 10 has liquid crystal panel 11 at front surface. OperatorSeeing liquid crystal panel 11 while operating operation portion 10, by various instruction input sewingMachine 1.
Sewing machine 1 has control device 30 at the lower surface of workbench 20. Control device30 are connected with the pedal 22 of the formula of entering into by means of bar 21. Operator is to rear side or front sideOperating pedal 22. Control device 30 is according to the direction of operating of pedal 22 and operational ton controlThe action of sewing machine 1.
Column sections 3 has main motor 13 on right flank top. Horn portion 4 is at inner toolHave main shaft 14, main shaft 14 is right-hand left in horn portion 4 inside with the state that can rotateTo extension. The right-hand member of main shaft 14 is connected with main motor 13, the left end of main shaft 14 withShank up-down mechanism (omitting diagram) is connected. Main motor 13 is by drivingMain shaft 14 moves up and down shank 7 and thread take-up tension lever 9.
As shown in Figure 2, support portion 2 has needle plate 15 at upper surface left end, and needle plate 15 existsSubstantial middle portion has pin hole 18. Pin hole 18 is passed in the lower end of sewing needle 8 in the time declining.Needle plate 15 respectively at the left of pin hole 18, front, rear, right-handly there is work feed perforation19. Work feed perforation 19 is rectangular holes long on fore-and-aft direction. Support portion 2Below needle plate 15, there is rotary shuttle mechanism (omitting diagram), work feed motor 23 (ginsengAccording to Fig. 3～Fig. 7), cloth feeding mechanism 32 (with reference to Fig. 3～Fig. 6), Poewr transmission mechanism 35(with reference to Fig. 3～Fig. 6).
With reference to Fig. 3, work feed motor 23, cloth feeding mechanism 32, Poewr transmission mechanism are described35. The paper upside of Fig. 3, downside, left distal side, right-hand nearly body side, right-hand far awayUpside that the nearly body side of distolateral, left is respectively sewing machine 1, downside, right side, left side,Front side, rear side. Work feed motor 23 is configured in the right-hand of cloth feeding mechanism 32. Work feed electricityThe work feed output shaft 24 of motivation 23 extends to left from motor body. Work feed motorThe 23rd, stepping motor, makes the angle model that can rotate of work feed output shaft 24 in regulationEnclose interior rotation. Work feed motor 23 make cloth feeding mechanism 32 forwards, backwards direction move.
Cloth feeding mechanism 32 has cloth pushing table 34, cloth conveying teeth 33. Cloth pushing table 34 is positioned at needle plateThe below of 15 (with reference to Fig. 2) and parallel with needle plate 15. Cloth pushing table 34 is at upper surfaceCenter near there is cloth conveying teeth 33. Cloth conveying teeth 33 and work feed perforation 19 (with reference to Fig. 2)Position corresponding. Cloth conveying teeth 33 is longer on fore-and-aft direction. The front and back of cloth conveying teeth 33The length of the Length Ratio work feed perforation 19 of direction is short. Cloth conveying teeth 33 have on top forBetween cloth conveying teeth 33 and presser feet 17 (with reference to Fig. 2), clamp the concavo-convex of cloth.
Poewr transmission mechanism 35 has horizontal feed axle 36, the first arm 37, actuation armPortion 38, the second arm 39, connecting portion 40. Horizontal feed axle 36 is at work feed motor 23Upper left side be supported on support portion 2 in the mode that can rotate. Horizontal feed axle 36 is along leftRight is extended. One end of the first arm 37 and the orthogonal link of work feed output shaft 24. DoWith near the orthogonal link of part one end of arm 38 and the right-hand member of horizontal feed axle 36. WaterFlat conveying axis 36 is accompanied by the rotation of effect arm 38 and rotates. The second arm 39 is with energyEnough states rotating another with the other end of the first arm 37 and effect arm 38 respectivelyOne end is connected. Connecting portion 40 near the part left end of horizontal feed axle 36 upwardExtend. Connecting portion 40 is connected with the leading section of cloth pushing table 34 in the mode that can rotateKnot, this linking part moves forward and backward.
The action of Poewr transmission mechanism 35 is described with reference to Fig. 4～Fig. 6. In following explanationIn, the axle center of work feed output shaft 24 is made as to L, by the first arm 37 and the second armThe axle center of 39 connection shaft is made as M, the link by the second arm 39 with effect arm 38The axle center of axle is made as N. W1～W3 of Fig. 4～Fig. 6 represents respectively the attached of cloth conveying teeth 33Nearly part. As mentioned above, work feed motor 23 makes work feed output shaft 24 at predetermined angularIn scope, rotate. As shown in Figure 4, work feed output shaft 24 is positioned at and turns at work feed the zero hourThe centre position of moving scope. When work feed output shaft 24 is positioned at the centre position of slewing areaTime, under side-looking state, link the straight line (straight line LM) of L and M and link M andThe straight line (straight line MN) of N becomes straight line on above-below direction. I.e. the first arm37 and second arm 39 on above-below direction, become each other straight line. Therefore, effectThe other end of arm 38 (part being connected with the second arm 39) is positioned at movable modelThe upper end of enclosing. If the other end of effect arm 38 is positioned at upper end, connecting portion 40Upper-end part of driving is in the front end (end on the right side of Fig. 4) of movable range. Therefore, work feedMechanism 32 is positioned at the front end of movable range.
If work feed output shaft 24 from the state of Fig. 4 around left side depending on turning clockwise under stateMoving, straight line LM intersects with straight line MN. The first arm 37 and the second arm 39 thatThis does not become straight line on above-below direction. The angle that straight line LM becomes with straight line MNLess angle (following, to be called " interior angle ") in degree slowly diminishes. Therefore, doDecline with the other end of arm 38, horizontal feed axle 36 is looked contrary under state around left sideHour hands rotate, and therefore cloth feeding mechanism 32 rearward moves. As shown in Figure 5, if work feed is defeatedShaft 24 arrives the end (end in front) in two ends of slewing area,The interior angle minimum of straight line LM and straight line MN. The other end of effect arm 38 is positioned atThe lower end of movable range. Therefore, cloth feeding mechanism 32 is positioned at the rear end of movable range.
If work feed output shaft 24, from the state reversion of Fig. 5, is looked the inverse time under state around left sidePin rotates, and the interior angle of straight line LM and straight line MN slowly becomes large. Therefore, actuation armThe top ends of portion 38 rises, and cloth feeding mechanism 32 forwards moves. If work feed output shaft 24The centre position that arrives slewing area, cloth feeding mechanism 32 is back to the shape shown in Fig. 4State, is positioned at the front end of movable range. If work feed output shaft 24 is further from the state of Fig. 4Around left side, depending on rotating counterclockwise under state, the interior angle of straight line LM and straight line MN againInferior reducing, cloth feeding mechanism 32 rearward moves. As shown in Figure 6, if work feed output shaft24 arrive the end at rear of slewing areas, and cloth feeding mechanism 32 is positioned at movable rangeRear end. Therefore, work feed output shaft 24 often turns to separately from an end of slewing areaAn end, the horizontal reciprocating swing of cloth feeding mechanism 32 once.
Straight line LM and straight line MN be more close to straight line, work feed motor 23 movingPower is more easy to transmit to effect arm 38. The load that work feed motor 23 bears is at work feedOutput shaft 24 carry out rotation action facing one direction midway than making rotation directionThe moment of reversion is little. Therefore, if sewing machine 1 carries out towards one at work feed output shaft 24The centre position midway (position shown in Fig. 4) of the rotation action of individual direction starts to sendCloth, can successfully carry out work feed.
As shown in Fig. 3～Fig. 6, sewing machine 1 has at the rear of cloth feeding mechanism 32 up and downConveying axis 27. Upper and lower conveying axis 27 is supported on support portion 2 in the mode that can rotate.Upper and lower conveying axis 27 extends along left and right directions. Upper and lower conveying axis 27 and horizontal feed axle 36Parallel. Upper and lower conveying axis 27 has belt wheel 25 in right part. Belt wheel 25 is by means of synchronouslyBand (omitting diagram) is connected with main shaft 14. Main shaft 14 is being protected with upper and lower conveying axis 27Hold under synchronous state and rotate. Upper and lower conveying axis 27 has eccentric cam 28 at left end.Eccentric cam 28 is accompanied by the rotation of upper and lower conveying axis 27 and makes cloth feeding mechanism 32 upper and lowerMotion. In sewing machine 1, shank 7 and sewing needle 8 up and down once during in,Cloth conveying teeth 33 and cloth pushing table 34 are up and down once. In sewing machine 1, sewing needle 8Move up and down and the mechanical synchronization that moves up and down of cloth conveying teeth 33.
If cloth pushing table 34 rises, the top of cloth conveying teeth 33 is from the 19 (references of work feed perforationFig. 2) be projected into the top of the upper surface of needle plate 15, cloth conveying teeth 33 and presser feet 17 itBetween clamp cloth. As long as cloth is below the thickness of regulation, be positioned at needle plate at cloth conveying teeth 33During 15 top, sewing needle 8 just can not thrust in cloth. The mistake of making in executionCheng Zhong, sewing machine 1 (specifically CPU44 described later) monitors main motor 13Anglec of rotation phase place with work feed motor 23. Sewing machine 1 obtain main motor 13 withWork feed motor 23 synchronous, is positioned at than the plate of needle plate 15 at the upper surface of cloth conveying teeth 33During the top side's of face position, drive work feed electricity with the amount specifying in sewing programMotivation 23. Therefore under the state that, cloth does not thrust at sewing needle 8, move along fore-and-aft direction.If cloth pushing table 34 declines, the upper surface of cloth conveying teeth 33 is positioned at than the upper surface of needle plate 15Position on the lower. If the upper surface of cloth conveying teeth 33 is positioned at than the upper surface of needle plate 15Position on the lower, even if cloth conveying teeth 33 moves along fore-and-aft direction, cloth also can not moveMoving. Sewing needle 8 cloth conveying teeth 33 be positioned at needle plate 15 below during in, on clothForm stitch. Therefore, sewing machine 1 utilizes different motor to carry out cloth feeding mechanism 32Driving and the sewing needle 8 of horizontal direction (being fore-and-aft direction in the present embodiment)Driving. Therefore, sewing machine 1 can freely be controlled cloth conveying teeth 33 in the process of makingThe amount of movement of horizontal direction.
The electrical structure of sewing machine 1 is described with reference to Fig. 7. Control device 30 hasCPU44. CPU44 is responsible for controlling sewing machine 1. CPU44 by means of bus withROM45, RAM46, storage device 47, I/O interface (following, to be called I/O)48 are connected. ROM45 storage is used for carrying out cloth feed amount described later and sets processing (referenceFig. 8), speed control processing (with reference to Fig. 9, Figure 11～Figure 13), confirming operation processingThe program of (with reference to Figure 10) etc. RAM46 is temporary transient, and storage is required for performing a programmeVarious values. Storage device 47 is the Nonvolatile memory devices for storing various values.
I/O48 is connected with pedal 22 and operating portion 10. Pedal 22 by direction of operating withOperational ton outputs to I/O48. Operating portion 10 outputs to operator's operation instructionI/O48. Operator, by operating operation portion 10, can set work feed starting position, sendCloth terminal location (aftermentioned). I/O48 is connected with drive circuit 51～drive circuit 53.Drive circuit 51 drives liquid crystal panel 11. Drive circuit 52 is turned round according to CPU44 inputSquare command signal drives main motor 13. Sewing machine 1 has for detection of main motorThe anglec of rotation of 13 output shaft i.e. the main encoder 55 of the main anglec of rotation. Main encoderThe testing result of the main anglec of rotation of main motor 13 is outputed to I/O48 by 55. DriveCircuit 53 is according to the work feed drive work feed motor 23 of CPU44 input. SendIt is pulse signal that the work feed of cloth motor 23 drives signal. Sewing machine 1 have for detection ofThe anglec of rotation of the output shaft of work feed motor 23 is the work feed coding of the work feed anglec of rotationDevice 56. Work feed encoder 56 is by the detection knot of the work feed anglec of rotation of work feed motor 23Fruit outputs to I/O48.
The sewing machine 1 that the first embodiment is described with reference to Fig. 8～Figure 10 (specificallyCPU44) performed processing. The CPU44 of sewing machine 1 is according to being stored in ROM45In program execution 8 shown in cloth feed amount set process, the First Speed shown in Fig. 9Control the confirming operation processing shown in processing, Figure 10. Sewing machine 1 can be carried out simultaneouslyState three processing.
With reference to Fig. 8, cloth feed amount setting processing is described. Set in processing sewing in cloth feed amountMachine 1 is set cloth feeding mechanism 32 according to the operation instruction of operator's input and (is specifically sentCloth tooth 33) work feed starting position, work feed terminal location. Work feed starting position is to sendCloth mechanism 32 reverses and contacts with cloth and start work feed after having completed work feed playbackPosition. Work feed terminal location is the position that cloth feeding mechanism 32 completes work feed. Cloth feed amountBe the amount of movement of the fore-and-aft direction of cloth conveying teeth 33, set work feed start bit by operatorPut with work feed terminal location and determine. By setting respectively work feed start bit by operatorPut, work feed terminal location, sewing machine 1 can be obtained respectively the work feed of work feed output shaft 24Motor Drive centre position, work feed Motor Drive terminal location, work feed motorDrive starting position. Sewing machine 1 can set work feed motor 23 drive start timeThe anglec of rotation of main motor 13, at the main motor 13 at the centre position place drivingThe anglec of rotation, in the anglec of rotation of main motor 13 of the extreme positions driving. IfThe power connection of sewing machine 1, CPU44 starts to carry out cloth feed amount setting processing.
Whether CPU44 has inputted work feed starting position, has sent from operating portion 10 operatorThe setting value of cloth terminal location judges (S1). If operator does not input setting value(S1: no), CPU44 transfers to processing the judgement of S9. If operator passes throughOperating operation portion 10 inputs each setting value (S1: be), and CPU44 is by each setting valueBe scaled the angle of work feed output shaft 24. The value that CPU44 obtains conversion stores into depositsIn storage device 47, thereby set work feed Motor Drive starting position STPos, work feedMotor Drive centre position CTPos and work feed Motor Drive terminal location ENPos(S2～S4). Cloth feeding mechanism 32 is positioned at work feed Motor Drive at work feed output shaft 24When centre position CTPos (state shown in Fig. 4), start work feed. At work feed output shaft24 are positioned at work feed Motor Drive starting position STPos and work feed Motor Drive terminalWhen the ENPos of position, cloth feeding mechanism 32 is the state shown in Fig. 5 or Fig. 6. CPU44Set conduct from work feed Motor Drive centre position CTPos to work feed Motor DriveThe cloth feed amount Pitch (S5) of the distance of terminal location ENPos. In the present embodiment,Work feed Motor Drive starting position, work feed Motor Drive centre position, work feed electricityMotivation drives terminal location, cloth feed amount to represent by the angle of work feed output shaft 24. ?In present embodiment, work feed output shaft 24 often carries out the rotation action of an one way, sendThe horizontal reciprocating swing of cloth mechanism 32 once. Therefore, sewing machine 1 is for work feed output shaftEach rotation direction in two rotation directions of 24 is set respectively work feed motor and is drivenMoving starting position STPos, work feed Motor Drive centre position CTPos, work feed electricityMotivation drives terminal location ENPos. Work feed Motor Drive starting position, work feed electricityMotivation drives centre position, work feed Motor Drive terminal location, cloth feed amount also canBy umber of pulse of work feed motor 23 etc., other are worth to represent. Cloth feed amount also can be with sendingThe actual amount of movement of cloth mechanism 32 represents. Cloth feed amount also can be used according to making journeyThe predefined form of order.
The output shaft that CPU44 sets as main motor 13 (is called main output below,Axle) the anglec of rotation (following, be called the main anglec of rotation) in driven by work feed motorMain anglec of rotation when the well-determined work feed Motor Drive in moving starting position startsStart angle FeedStart (S6). CPU44 sets conduct by work feed Motor DriveThe intermediate angle FeedCenter (S7) of the well-determined main anglec of rotation in centre position.CPU44 sets as being revolved by the well-determined master of work feed Motor Drive terminal locationThe terminal angle FeedEnd (S8) of gyration. If operator does not input for finishingThe instruction (S9: no) of processing, CPU44 turns back to processing the judgement of S1. IfOperator's end of input instruction (S9: be), CPU44 finishes cloth feed amount setting placeReason.
With reference to Fig. 9, First Speed control processing is described. In First Speed control is processed,Sewing machine 1 calculates the target anglec of rotation of work feed output shaft 24 and the actual anglec of rotationBetween deviation. Sewing machine 1 calculates turning of work feed motor 23 according to the deviation calculatingSpeed. Therefore, the rotating speed of work feed motor 23 can be got caught up in the rotating speed of main motor 13Change. If the power connection of sewing machine 1, CPU44 starts to carry out First Speed controlSystem is processed.
CPU44 obtains the current main anglec of rotation of main motor 13 from main encoder 55DDPOS (S11). CPU44 is to the main anglec of rotation DDPOS obtaining in S11Whether judge (S12) than intermediate angle FeedCenter is forward. In other words,CPU44 to main anglec of rotation DDPOS whether in start angle FeedStart withBetween intermediate angle FeedCenter, judge.
If main anglec of rotation DDPOS is more forward than intermediate angle FeedCenter(S12: be), CPU44 calculates work feed motor 23 in during a work feedRotating speed (S13～S17) between reversion in earlier stage. During a work feed, it is power transmissionMechanism 35 by work feed output shaft 24 facing one direction and rightabout each rotationDuring action is converted to the oscillating motion of round trip of cloth feeding mechanism 32. Before reversionBe during this time during a work feed in phase before the swaying direction reversion of cloth feeding mechanism 32Between. Cloth feeding mechanism 32 makes cloth conveying teeth 33 be back to work feed start bit in reversing between early stagePut.
Specifically, to obtain work feed motor 23 from work feed encoder 56 current for CPU44Work feed anglec of rotation RELPOS (S13). The CPU44 target setting anglec of rotationPOS1a (S14). Target anglec of rotation POS1a is that work feed output shaft 24 should be positioned at, the work feed anglec of rotation corresponding with the main anglec of rotation DDPOS obtaining in S11.In sewing machine 1, main motor 13 is synchronizeed with work feed motor 23. Therefore, work feedThe target anglec of rotation of motor 23 is determined by main anglec of rotation DDPOS is unique.
The establishing method of target anglec of rotation POS1a is described. CPU44 utilizes followingFormula is calculated angle FeedDeg<a>. Angle FeedDeg<a>be that main output shaft is sendingThe angle that cloth tooth 33 rotates from beginning work feed playbacks during reversion.
FeedDeg<a>＝FeedCenter―FeedStart
Utilize following formula to calculate FeedDeg<a>in completed the angle of rotationRatio.
(DDPOS―FeedStart)/FeedDeg<a>
Therefore, CPU44 can utilize following formula to calculate and the target setting anglec of rotationDegree POS1a.
POS1a＝STPos+(CTPos―STPos)(DDPOS―FeedStart)/FeedDeg<a>
CPU44 calculate the target anglec of rotation POS1a that sets in S14 with at S13In deviation (S15) between the work feed anglec of rotation RELPOS that obtains. CPU44Calculate the rotating speed SP1a indicating to work feed motor 23 according to the deviation calculating(S16). Particularly, CPU44 is by being multiplied by deviation as predefined solidThe coefficient N1a of definite value calculates rotating speed SP1a. CPU44 will be used for rotating speed SP1aDrive the work feed of work feed motor 23 to drive signal to output to drive circuit 53, driving is sentCloth motor 23 (S17). Processing is turned back to S11 by CPU44.
If main anglec of rotation DDPOS is after intermediate angle FeedCenter(S12: no), CPU44 calculates work feed motor 23 in during a work feedRotating speed (S19～S28) between the reversion later stage. Between the reversion later stage, it it is a work feed phaseBetween in after the swaying direction reversion of cloth feeding mechanism 32 during. Cloth feeding mechanism 32 is in reversionIn between the later stage by making cloth conveying teeth 33 move to work feed terminal location from work feed starting positionCarry out work feed. It is current that CPU44 obtains work feed motor 23 from work feed encoder 56Work feed anglec of rotation RELPOS (S19). The CPU44 target setting anglec of rotationPOS1b (S20). Target anglec of rotation POS1b is that work feed output shaft 24 should be positioned at, the work feed anglec of rotation corresponding with the main anglec of rotation DDPOS obtaining in S11.
The establishing method of target anglec of rotation POS1b is described. CPU44 utilizes followingFormula is calculated angle FeedDeg<b>. Angle FeedDeg<b>That main output shaft is sendingCloth tooth 33 starts work feed from reversion and rotates in moving to during work feed terminal locationAngle.
FeedDeg<b>＝FeedEnd―FeedCenter
Utilize following formula to calculate FeedDeg<b>In completed the angle of rotationRatio.
(DDPOS―FeedCenter)/FeedDeg<b>
Therefore, CPU44 can utilize following formula to calculate the target anglec of rotationPOS1b。
POS1b＝CTPos+Pitch(DDPOS―FeedCenter)/FeedDeg<b>
CPU44 calculate the target anglec of rotation POS1b that sets in S20 with at S19In deviation (S21) between the work feed anglec of rotation RELPOS that obtains. CPU44By the deviation calculating is multiplied by as the coefficient N1b of fixed value and calculates rotating speedSP1b (S22). Fixed value N1b establishes in advance according to the characteristic of cloth feeding mechanism 32 etc.Fixed. N1a and N1b set respectively.
CPU44 to the rotating speed SP1b that calculates in S22 with respect to upper onceThe speed of indicating to work feed motor 23 in the arbitrary steps in S17, S25, S28Whether variable quantity is the judging below 10% of last instruction speed (S24).Sewing machine 1 also can obtain the current rotating speed of work feed motor 23, to rotating speed SP1b phaseWhether the variable quantity for obtained current rotating speed is to judge below 10%.The variable quantity judging is not limited to 10%, can be also the fixed value of regulation. IfVariable quantity is (S24: be) below 10%, and CPU44 to calculate in S22Rotating speed SP1b drives work feed motor 23 (S25). Processing is turned back to S11 by CPU44.In the time that variable quantity is greater than 10% (S24: no), CPU44 calculates and makes variable quantity is 10%Following rotating speed SP1c, (S27). Particularly, rotating speed SP1b from onceWhen instruction speed is slowed down, CPU44 is by being multiplied by 0.9 by last instruction speedCalculate rotating speed SP1c. Rotating speed SP1b from instruction speed once while accelerating, CPU44By being multiplied by 1.1, last instruction speed calculates rotating speed SP1c. CPU44 withThe rotating speed SP1c calculating in S27 drives work feed motor 23 (S28). Therefore,Sewing machine 1 can suitably prevent that instruction speed is anti-at the swaying direction of cloth feeding mechanism 32Before and after turning, there is variation sharply. If the reversion of the swaying direction of cloth feeding mechanism 32, sendThe top of the cloth conveying teeth 33 of cloth mechanism 32 is given prominence to and is opened towards top from the plate of needle plate 15Begin to move to work feed terminal location from work feed starting position. Therefore, sewing machine 1 can be preventedThere is variation sharply in the rotating speed of work feed motor 23 only in the time starting work feed. CPU44Processing is turned back to S11.
With reference to Figure 10, confirming operation processing is described. In confirming operation is processed, sewing machine 1Whether main motor 13 is synchronizeed and confirmed with work feed motor 23, electronic at twoMachine carries out error handling processing when not synchronous. If the power connection of sewing machine 1, CPU44Start to carry out confirming operation processing.
CPU44 obtains the current main anglec of rotation of main motor 13 from main encoder 55DDPOS (S31). CPU44 is to the confirming operation time of being undertaken by operator in advanceSetting content judge (S32, S33).
In the sewing machine 1 of present embodiment, operator can pass through operating operation portion 10Set the confirming operation time. The confirming operation time comprise at ordinary times confirm and assigned address trueRecognize. Be confirmed to be at ordinary times every specific interval and carry out confirming operation. Specific interval is for exampleCPU44 carry out S31～S44 processing interval or with the clock number pair of CPU44The stipulated time of answering. In confirming at ordinary times, sewing machine 1 can move more accuratelyConfirm. Assigned address is confirmed to be at the cloth conveying teeth 33 of cloth feeding mechanism 32 and arrives confirming operation, carry out confirming operation when the position. In assigned address is confirmed, sewing machine 1 can be requiredTime carry out efficiently confirming operation, and make CPU44 processing load reduce.
Operator, in the time carrying out assigned address confirmation, can and appoint initial, set positionAny one set positions in meaning Zhe Liangge position, position is confirming operation position. ?While being set as initial, set position, confirming operation position is the cloth conveying teeth of cloth feeding mechanism 32The position that give prominence to upward from the upper surface of needle plate 15 on 33 top and submerging downwardsPosition. Cloth feeding mechanism 32 is positioned at than the upper surface of needle plate 15 on the top of cloth conveying teeth 33Work feed under the state of top side's position. Therefore, on the top of cloth conveying teeth 33 from needle plateThe position that 15 upper surface rises, declines, two motor 13,23 be synchronously specialNot important. By being set as initial, set position, sewing machine 1 can be in particular importanceTime carry out efficiently confirming operation.
In the time that operator is optional position by confirming operation set positions, confirming operation positionPut is that operator passes through the position that operating operation portion 10 sets. Operator can setPosition in work feed Motor Drive centre position CTPos and work feed Motor Drive eventuallyBetween end position ENPos. In the time that cloth is thicker, sewing needle 8 is more Zao when thinner than clothTime thrusts in cloth. When confirming operation position is initial, set position and cloth when thicker,Sometimes sewing needle 8 arrives from the upper surface of needle plate 15 at the cloth conveying teeth 33 of cloth feeding mechanism 32Before the position declining, just thrust in cloth. Be the cloth conveying teeth of sewing needle 8 at cloth feeding mechanism 3233 arrive confirming operation position just thrusts in cloth before. Therefore, if two motor 13,23 synchronous generation deviation, cloth can just be sewed pin 8 before carrying out confirming operationUnder the state thrusting, move. If cloth thrusts under the state in cloth and moves at sewing needle 8,Sewing needle 8 can be bending. Bending sewing needle 8 likely not through pin hole 18 and and pinThe upper surface of plate 15 contacts and damages. By by confirming operation set positions for than givingThe position of the time early time of the position that cloth tooth 33 declines from needle plate 15, sewing machine 1Can carry out confirming operation according to the thick change of the cloth time. To move really by operatorRecognizing set positions is optional position, and sewing machine 1 can be in the desired acknowledgement bit of operatorPut and carry out confirming operation.
If the setting of confirming operation time is not to confirm at ordinary times (S32: no), CPU44According to the main anglec of rotation DDPOS of main motor 13 to the position of cloth feeding mechanism 32 beNo is that confirming operation position judges (S33). Sewing machine 1 drives work feed motor23, make work feed anglec of rotation RELPOS and the main motor 13 of work feed motor 23Main anglec of rotation DDPOS synchronous (with reference to Fig. 9). The position basis of cloth feeding mechanism 32Work feed anglec of rotation RELPOS and determining. Therefore, sewing machine 1 can be according to main electronicThe main anglec of rotation DDPOS of machine 13 judges the position that cloth feeding mechanism 32 should exist.If cloth feeding mechanism 32 is in confirming operation position (S33: no) not, CPU44 will locateReason turns back to S31.
When the setting of confirming operation time is (S32: be) while confirming at ordinary times, or sendWhen cloth mechanism 32 is positioned at the confirming operation position of regulation (S33: be), CPU44 toWhether the current main anglec of rotation DDPOS obtaining in S31 is than intermediate angleFeedCenter is forward judges (S34). If than intermediate angle FeedCenterForward (S34: be), CPU44 obtains the work feed anglec of rotation from work feed encoder 56RELPOS (S36). CPU44 set work feed output shaft 24 with in S31, obtainTarget anglec of rotation POS1a (S37) corresponding to main anglec of rotation DDPOS.The establishing method of POS1a is identical with above-mentioned S14 (with reference to Fig. 9). CPU44 calculates instituteThe target anglec of rotation POS1a setting and the work feed anglec of rotation of obtaining in S36Deviation (S38) between RELPOS.
Whether CPU44 judges (S39) to the deviation calculating below threshold values.This threshold values presets and is stored in storage device 47, can be also to pass through operatorOperating operation portion 10 and the value that can change. If deviation is below threshold values(S39: be), CPU44 is judged as main motor 13 and synchronizes with work feed motor 23,Processing is turned back to S31. If deviation is greater than threshold values (S39: no), CPU44By the picture disply of makeing mistakes of synchronous generation deviation that represents two motor 13,23 to liquidIn crystal panel 11 (S46). Therefore, operator can easily grasp two motor13, the situation of 23 synchronous generation deviation is also suitably processed. In S46,CPU44 also can be notified and be made mistakes by the sound of makeing mistakes from loudspeaker. CPU44Stop the driving (S47) of main motor 13 and work feed motor 23, tenth skill is confirmedProcess.
In the time that main anglec of rotation DDPOS is after intermediate angle FeedCenter(S34: no), CPU44 obtains work feed anglec of rotation RELPOS (S41). CPU44Set work feed output shaft 24 with main anglec of rotation DDPOS couple that obtain in S31The target anglec of rotation POS1b (S42) answering. The establishing method of POS1b and above-mentioned S20(with reference to Fig. 9) is identical. CPU44 calculates the target anglec of rotation POS1b settingAnd the deviation (S43) between the work feed anglec of rotation RELPOS obtaining in S41.
Whether CPU44 judges (S44) to the deviation calculating below threshold values.This threshold values presets and is stored in storage device 47. Sewing machine 1 is passing through cloth feed machineThe cloth conveying teeth 33 of structure 32 contacts with cloth and while carrying out work feed, should be than finishing work feed alsoWhile returning to work feed starting position, more strictly keep synchronous. Therefore, comparatively desirableThe threshold value setting of cloth feeding mechanism 32 while carrying out work feed for than finishing work feed and opening to work feedThe little value of threshold values when beginning, position was returned. If deviation is (S44: be) below threshold values,Processing is turned back to S31 by CPU44. If deviation is greater than threshold values (S44: no),CPU44 shows the picture (S46) of makeing mistakes, and stops the driving of two motor 13,23(S47), end process. In addition, if the power supply of sewing machine 1 disconnects, finish to sendCloth amount is set and is processed (with reference to Fig. 8), First Speed control processing (with reference to Fig. 9), movingDo to confirm to process (with reference to Figure 10).
As mentioned above, the sewing machine 1 of the first embodiment often makes work feed output shaft 24 come and goRotate once, can level come and go and drive cloth feeding mechanism 32 twice. With often make work feedOutput shaft 24 comes and goes to rotate once to come and go while driving cloth feeding mechanism 32 1 times and compares, work feedThe switching frequency of the rotation direction of motor 23 reduces. Therefore, act on work feed electronicLoad on machine 23 reduces. Sewing machine 1 is by using the main anglec of rotation and the work feed anglec of rotationDegree calculates rotating speed, can keep the driving of main shaft 14 and the driving of cloth feeding mechanism 32 sameStep. Sewing machine 1 can reduce the switching frequency of the rotation direction of work feed motor 23, andAnd, can suitably keep main shaft 14 to synchronize with the driving of cloth feeding mechanism 32.
In the present invention, the swaying direction of cloth feeding mechanism 32 at work feed output shaft 24 at a high speedCarry out facing one direction and the reversion midway of rightabout each rotation action. SewingMachine 1 may calculate and to differ greatly before and after the swaying direction reversion of cloth feeding mechanism 32Speed. If the velocity variations that work feed motor 23 produces sharply in rotation process canBear larger load. The sewing machine 1 of present embodiment can be set work feed motor 23Rotating speed and make the variable quantity of rotating speed below threshold values. Therefore, sewing machine 1 can preventBecause sharply changing, rotating speed make work feed motor 23 bear larger load.
Sewing machine 1 uses respectively main revolving before and after the swaying direction reversion of cloth feeding mechanism 32Gyration DDPOS and work feed anglec of rotation RELPOS calculate to work feed motorThe rotating speed of 23 instructions. Therefore, sewing machine 1 can calculate and the swing of cloth feeding mechanism 32Corresponding suitable of each situation (cloth feed amount, work feed time etc.) before and after direction reversionRotating speed. Because sewing machine 1 all keeps two electricity in the outlet of cloth feeding mechanism 32, loopMotivation 13,23 is synchronous, therefore can keep more reliably two motor 13,23 sameStep.
The sewing machine 1 of the first embodiment is according to the main anglec of rotation of main motor 13DDPOS set target anglec of rotation POS1a that work feed output shaft 24 should be positioned at orPOS1b. Sewing machine 1 calculates the target anglec of rotation POS1a or the POS1b that setAnd the deviation between the work feed anglec of rotation RELPOS of work feed motor 23 reality. SeamThe machine 1 of threading calculates the rotating speed of work feed motor 23 according to the deviation calculating. Even main electronicMachine 13 changes with the rotating speed of main shaft 14, and work feed motor 23 also keeps with main electronicMachine 13 synchronously drives. Therefore, even if sewing speed changes, sewing machine 1Also can keep the driving of main shaft 14 to synchronize with the driving of cloth feeding mechanism 32.
The sewing machine 1 of the first embodiment does not use the rotating speed of main motor 13 just canCalculate the rotating speed of work feed motor 23. Therefore, the sewing machine 1 of the first embodiment is being ledWhen motor 13 stops or in the time that operator manually makes main shaft 14 rotate, also can fitThe local work feed motor 23 that keeps is synchronizeed with main motor 13. In sewing machine 1, behaviourAuthor can free setting work feed Motor Drive starting position, work feed Motor DriveCentre position, work feed Motor Drive terminal location, cloth feed amount. Sewing machine 1 can be withWith the corresponding suitable speed drive work feed motor 23 of setting value.
In the first embodiment, do for the CPU44 of the processing of the S11 of execution graph 9Be main anglec of rotation test section plays a role, for carrying out the processing of S13, S19CPU44 plays a role as work feed anglec of rotation test section, for carrying out S16, S22The CPU44 of processing play a role as speed calculating part, for carry out S17, S25,The CPU44 of the processing of S28 plays a role as drive control part.
For carry out S12 processing CPU44 as during judging part play a role,The CPU44 that is used for the processing of carrying out S24 plays a role as variable quantity judging part, usesCPU44 in the processing of carrying out S27 plays a role as variation limitation portion, forThe CPU44 that carries out the processing of S16 plays a role as the front speed calculating part of reversion, usesCPU44 in the processing of carrying out S22 plays a role as the rear speed calculating part of reversion,The CPU44 that is used for the processing of carrying out S14, S20 sends out as work feed angle on target configuration partWave effect, calculate as work feed deviation for the CPU44 of the processing of carrying out S15, S21Portion plays a role. Set the CPU44 processing as establishing for carrying out the cloth feed amount of Fig. 8Bonding part plays a role, for the CPU44 conduct of the processing of S16, the S22 of execution graph 9First Speed calculating part plays a role.
The processing of the S11 of Fig. 9 is equivalent to main anglec of rotation detecting step, S13, S19Processing be equivalent to work feed anglec of rotation detecting step, during the processing of S12 is equivalent toDetermining step, speed calculation procedure before the processing of S13～S16 is equivalent to reverse, S19～Speed calculation procedure after the processing of S22 is equivalent to reverse.
With reference to Figure 11, the second embodiment of the present invention is described. The seam of the second embodimentThe machine 1 of threading is set main motor 13 according to the current work feed anglec of rotation of work feed output shaft 24The target anglec of rotation of main output shaft. Sewing machine 1 calculates the main output shaft that setsDeviation between the main anglec of rotation of the target anglec of rotation and reality, thus work feed calculatedThe rotating speed of motor 23. The sewing machine 1 of the first embodiment is set work feed output shaft 24The target anglec of rotation and calculate rotating speed. The sewing machine 1 of the second embodiment is using masterIn the target anglec of rotation this point of output shaft with the sewing machine 1 of the first embodiment notWith, its frame for movement, electrical structure, cloth feed amount are set and are processed (with reference to Fig. 8), moveDo confirmation processing (with reference to Figure 10) etc. are identical with the first embodiment. Therefore, secondThe embodiment pair structure identical with the sewing machine 1 of the first embodiment, processing mark phaseAlso description thereof is omitted for same Reference numeral.
When the power connection of sewing machine 1, through S11 and while being judged as YES in S12,CPU44 obtains work feed anglec of rotation RELPOS (S13). CPU44 target settingAnglec of rotation POS2a (S114). Target anglec of rotation POS2a is main motor 13Main output shaft should be arranged in, with the work feed anglec of rotation obtained at S13The main anglec of rotation that RELPOS is corresponding.
The establishing method of target anglec of rotation POS2a is described. Work feed output shaft 24 is sendingCloth tooth 33 forwards, backwards a direction in direction move during in the angle of rotating be(CTPos-STPos). (CTPos-STPos) in, completed the angle of rotationRatio be (RELPOS-STPos)/(CTPos-STPos). CPU44Can utilize following formula to calculate target anglec of rotation POS2a.
POS2a＝FeedStart+(FeedCenter―FeedStart)(RELPOS―STPos)/(CTPos―STPos)
CPU44 calculate the target anglec of rotation POS2a that sets in S114 withDeviation (S115) between the main anglec of rotation DDPOS obtaining in S11. CPU44Calculate for calculating to work feed motor 23 fingers according to the deviation calculating in S115The conversion value (S116) of the rotating speed showing. Particularly, CPU44 is multiplied by deviation(FeedCenter-FeedStart)/(CTPos-STPos). Conversion value is phaseWhen the target anglec of rotation that should be positioned in work feed output shaft 24 and the work feed anglec of rotationThe value of the deviation between RELPOS. CPU44 is according to the conversion calculating in S116Value is calculated the rotating speed SP1a (S16) indicating to work feed motor 23. Particularly,CPU44 calculates rotating speed SP1a by conversion value being multiplied by coefficient N1a. CPU44Drive work feed motor 23 (S17) with the rotating speed SP1a calculating. CPU44 will locateReason turns back to S11.
In the time being judged as NO in S12, CPU44 obtains the current work feed anglec of rotationRELPOS (S19). CPU44 utilizes following formula to calculate and set main output shaftThe target anglec of rotation corresponding to the work feed anglec of rotation RELPOS with obtaining in S19Degree POS2b (S120).
POS2b＝FeedCenter+(FeedEnd―FeedCenter)(RELPOS―CTPos)/Pitch
CPU44 calculate the target anglec of rotation POS2b that sets in S120 withDeviation (S121) between the main anglec of rotation DDPOS obtaining in S11. CPU44By the deviation calculating in S121 is multiplied by (FeedEnd-FeedCenter)/ Pitch calculates conversion value (S122). CPU44 is by being multiplied by coefficient by conversion valueN1b calculates rotating speed SP1b (S22).
CPU44 carries out the processing identical with the S24～S28 of First Speed control processing,Processing is turned back to S11. If the power supply of sewing machine 1 disconnects, finish second speed controlSystem is processed.
As mentioned above, the sewing machine 1 of the second embodiment is according to the work feed anglec of rotationRELPOS sets target anglec of rotation POS2a or the POS2b of main output shaft. SewingMachine 1 calculate the target anglec of rotation that sets and actual main anglec of rotation DDPOS itBetween deviation. Sewing machine 1 calculates turning of work feed motor 23 according to the deviation calculatingSpeed. Even if main motor 13 changes with the rotating speed of main shaft 14, work feed motor 23Also keep synchronously rotating with main motor 13. Therefore, though sewing speed send outChanging, sewing machine 1 also can keep the driving of main shaft 14 and driving of cloth feeding mechanism 32Moving synchronous. The sewing machine 1 of the second embodiment is in the time that main motor 13 stops or behaviourWhen author manually makes main shaft 14 rotate, also can suitably keep work feed motor 23 withMain motor 13 is synchronous.
In the second embodiment, for carrying out the processing of S114, S120 of Figure 11CPU44 plays a role as major heading angle initialization portion, for carrying out S115, S121The CPU44 of processing play a role as main deviation calculating part, for carry out S16,The CPU44 of the processing of S22 plays a role as First Speed calculating part.
With reference to Figure 12, the 3rd embodiment of the present invention is described. The seam of the 3rd embodimentThe machine 1 of threading calculates until the main output shaft of main motor 13 reaches intermediate angleFeedCenter or terminal angle FeedEnd (being equivalent to reverse angle of the present invention)The required time. Intermediate angle FeedCenter is that main output shaft is at cloth feeding mechanism 32Reverse in work feed starting position and start the main rotation that moment of work feed should be positioned atAngle. Terminal angle FeedEnd is that main output shaft arrives work feed eventually at cloth feeding mechanism 32The main anglec of rotation that end position the moment that swaying direction is reversed should be positioned at. SewingThat machine 1 calculates work feed the output shaft 24 until work feed that next cloth feeding mechanism 32 arrives leavesThe residue anglec of rotation of beginning position or work feed terminal location. Sewing machine 1 calculates and is calculatingRequired time in work feed motor 23 for rotate residue the anglec of rotation rotating speed. TheThe sewing machine 1 of three embodiments is only replacing by carrying out third speed control processingFirst Speed control processing and second speed control are processed in this point and the first enforcement sideFormula, the second embodiment difference. Therefore, the explanation of the 3rd embodiment is to firstThe identical structure of sewing machine 1 of embodiment, the second embodiment marks identical with processingReference numeral and description thereof is omitted.
When the power connection of sewing machine 1, through S11 and while being judged as YES in S12,CPU44 calculate the rotating speed of work feed motor 23 between reversion early stage (S53～S59). Specifically, CPU44 obtains intermediate angle from storage device 47FeedCenter (S53). Intermediate angle FeedCenter is that cloth feeding mechanism 32 arrivesMain anglec of rotation when work feed starting position. CPU44 passes through from intermediate angleIn FeedCenter, deduct current main anglec of rotation DDPOS, calculate until main defeatedShaft reaches the residue anglec of rotation RemMa (S54) of intermediate angle FeedCenter.
CPU44 obtains the rotating speed DDSpeed (unit: rpm) of main motor 13(S55). Rotating speed DDSpeed by using in rotating speed Check processing (omitting diagram)The variable quantity (unit: revolution) of the main anglec of rotation of obtaining from main encoder 55 divided bySampling time (unit: minute) calculate. Rotating speed Check processing and the 3rd speedDegree is controlled to process simultaneously and is carried out. CPU44 utilizes following formula to calculate until main electronicIt is (single that the main output shaft of machine 13 reaches the required time T a of intermediate angle FeedCenterPosition: minute) (S56). In addition, the point in formula represents multiplication.
Ta＝RemMa/(360·DDSpeed)
CPU44 obtains the current work feed of work feed motor 23 from work feed encoder 56 and revolvesGyration RELPOS (S57). CPU44 passes through from work feed Motor Drive interpositionPut CTPos and deduct current work feed anglec of rotation RELPOS, calculate until work feed is defeatedShaft 24 arrives the residue anglec of rotation RemFa in work feed Motor Drive centre position(S58). CPU44 utilizes following formula to calculate work feed motor 23 use required timesTa rotates the required rotating speed SP2a (S59) of residue anglec of rotation RemFa.
SP2a＝RemFa/(360·Ta)
CPU44 drives work feed motor 23 (S60) with the rotating speed SP2a calculating.Processing is turned back to S11 by CPU44.
If main anglec of rotation DDPOS is after intermediate angle FeedCenter(S12: no), CPU44 calculates the rotating speed of work feed motor in reversing between the later stage(S62～S72). Specifically, CPU44 obtains terminal angle from storage device 47FeedEnd (S62). Terminal angle FeedEnd is that cloth feeding mechanism 32 arrives work feed eventuallyMain anglec of rotation when end position. CPU44 by subtracting from terminal angle FeedEndRemove current main anglec of rotation DDPOS, calculate until main output shaft reaches terminal angleThe residue anglec of rotation RemMb (S63) of FeedEnd.
CPU44 obtains the rotating speed DDSpeed (S64) of main motor. CPU44 profitWith following formula calculating required time Tb (S65). Required time Tb is until main defeatedShaft reaches the time of terminal angle FeedEnd.
Tb＝RemMb/(360·DDSpeed)
CPU44 obtains current work feed anglec of rotation RELPOS (S66). CPU44By deducting the current work feed anglec of rotation from work feed Motor Drive terminal location ENPosDegree RELPOS, calculates until work feed output shaft 24 arrives work feed Motor Drive terminalThe residue anglec of rotation RemFb (S67) of position ENPos. Below CPU44 utilizesFormula calculate rotating speed SP2b (S68). Rotating speed SP2b is work feed motor 23 use institutesThe Tb that takes time rotates the required rotating speed of residue anglec of rotation RemFb.
SP2b＝RemFb/(360·Tb)
The variation of CPU44 to the last instruction speed based on work feed motor 23Whether amount is below 10%, to judge (S69). Last instruction speed is upperIn arbitrary steps in S60, S71, S73 once, indicate to work feed motor 23Speed. Variable quantity be the rotating speed SP2b that calculates in S68 based on instruction onceThe variable quantity of speed. If variable quantity is (S69: be) below 10%, CPU44Drive work feed motor 23 (S71) with the rotating speed SP2b calculating in S68.Processing is turned back to S11 by CPU44. In the time that variable quantity is greater than 10% (S69: no),CPU44 calculates and makes variable quantity is the rotating speed SP2c (S72) below 10%. For example ought turnSpeed SP2b is in the time that last instruction speed is slowed down, and CPU44 can be by last fingerShow that speed is multiplied by more than 0.9 and is less than 1.0 value and calculate SP2c. As rotating speed SP2bIn the time that last instruction speed is accelerated, CPU44 can be by last instruction speedBe multiplied by the value being greater than below 1.0 and 1.1 and calculate SP2c. CPU44 also can useAdditive method calculates SP2c. The rotating speed SP2c of CPU44 to calculate in S72Drive work feed motor 23 (S73). Processing is turned back to S11 by CPU44. If sewingThe power supply of machine 1 disconnects, and finishes third speed control processing.
As mentioned above, the sewing machine 1 of the 3rd embodiment calculates until main motor 13Main output shaft reach intermediate angle or required time T a or the Tb of terminal angle. SewingMachine 1 calculate work feed motor 23 until cloth feeding mechanism 32 arrives work feed starts next timeResidue anglec of rotation RemFa or the RemFb of position or work feed terminal location. Sewing machine1 calculates work feed motor 23 use required time Ta or the Tb rotation residue anglec of rotationRotating speed SP2a or SP2b that RemFa or RemFb are required. By with rotating speed SP2aOr SP2b driving work feed motor 23, and make work feed motor 23 and main motor 13Synchronously. Work feed output shaft 24 arrives work feed Motor Drive centre position CTPos or sendThe moment of cloth Motor Drive terminal location ENPos and the main output of main motor 13It is consistent that axle reaches moment of reverse angle. Reverse angle is intermediate angle FeedCenterOr terminal angle FeedEnd. Therefore, even if sewing speed changes, sewing machine 1Also can keep the driving of main shaft 14 to synchronize with the driving of cloth feeding mechanism 32. The 3rd implementsThe sewing machine 1 of mode does not use position and the order of the output shaft of two motor 13,23Deviation between cursor position. Sewing machine 1 the turning at main motor 13 of the 3rd embodimentSpeed is not used deviation just can suitably control two motor 13,23 while increase.
In the 3rd embodiment, for carrying out the processing of S57, S66 of Figure 12CPU44 plays a role as work feed anglec of rotation test section, for carrying out S60, S71The CPU44 of processing play a role as drive control part, for carrying out locating of S69The CPU44 of reason plays a role as variable quantity judging part, for carrying out S72, S73The CPU44 of processing play a role as variation limitation portion, for carrying out S59'sThe CPU44 processing plays a role as the front speed calculating part of reversion, for carrying out S68Processing CPU44 as reversion after speed calculating part play a role.
The CPU44 that is used for the processing of carrying out S53, S62 sends out as reverse angle acquisition unitWave effect, for the CPU44 of processing that carries out S54, S63 as more than the main anglec of rotationAmount calculating part plays a role, for the CPU44 of processing that carries out S55, S64 as speedDegree acquisition unit play a role, for carry out S56, S65 processing CPU44 as timeBetween calculating part play a role, for the CPU44 of processing that carries out S58, S67 as givingCloth anglec of rotation surplus calculating part plays a role, for carrying out the processing of S59, S68CPU44 plays a role as second speed calculating part.
The processing of S57, S66 is equivalent to work feed anglec of rotation detecting step, S53～S59Processing be equivalent to reverse before speed calculation procedure, the processing of S62～S68 is equivalent to insteadTurn rear speed calculation procedure.
With reference to Figure 13～Figure 15, the 4th embodiment of the present invention is described. The 4th enforcement sideThe sewing machine 1 of formula is according to the deviation between the target anglec of rotation and the actual anglec of rotationCalculate rotating speed SP1a or SP1b. Sewing machine 1 calculates and turns according to the rotating speed of main motor 13Speed SP2a or SP2b. It is electronic that sewing machine 1 changes work feed according to the rotating speed of main motor 13The control method of machine 23. The sewing machine 1 of the 4th embodiment is passing through to carry out four-speed degreeControlling to process replaces the control of First Speed control processing～third speed to process this pointUpper different from the first embodiment～three embodiment. Therefore, the 4th embodimentTo the structure identical with the sewing machine 1 of the first embodiment～three embodiment with locateAlso description thereof is omitted for the identical Reference numeral of reason mark.
If the power connection of sewing machine 1, CPU44 starts to carry out shown in Figure 13Four-speed degree control processing. The master that CPU44 obtains main motor 13 from main encoder 55 is revolvedGyration DDPOS (S81). CPU44 carries out First Speed computing (S82).First Speed computing is according between the target anglec of rotation and the actual anglec of rotationDeviation calculate the processing of rotating speed. The content of First Speed computing and First SpeedThe content of controlling processing (with reference to Fig. 9) is roughly the same.
As shown in figure 14, CPU44 revolves the master who obtains in S81 (with reference to Figure 13)Whether gyration DDPOS judges than intermediate angle FeedCenter is forward(S12). If main anglec of rotation DDPOS is more forward than intermediate angle FeedCenter(S12: be), CPU44 carries out and the S13～S16 of First Speed control processingIdentical processing, calculates rotating speed SP1a. Processing is turned back to the control of four-speed degree by CPU44System is processed.
If main anglec of rotation DDPOS is after intermediate angle FeedCenter(S12: no), CPU44 carries out and the S19～S22 of First Speed control processingIdentical processing, calculates rotating speed SP1b. Processing is turned back to the control of four-speed degree by CPU44System is processed.
Turn back to the explanation of Figure 13. CPU44 obtains the rotating speed of main motor 13DDSpeed (S83). Whether CPU44 is 300 (rpm) to rotating speed DDSpeedBelow judge (S84). 300 is first threshold values. The first threshold values is not limited to 300.The first threshold values also can change by operator's operating operation portion 10. If turnedSpeed DDSpeed is (S84: be) below 300, and CPU44 is by first of S82The SP1a calculating in speed computing or SP1b are defined as computational speed one time(S85). Computational speed refer to respect on the variation of instruction speed onceThe speed that amount directly adopted as the rotating speed of work feed motor 23 for time below threshold values.S95 is transferred in processing by CPU44. If rotating speed DDSpeed be greater than 300 (S84:No), CPU44 carries out second speed computing (S87). Second speed is calculatedProcessing is locating according to the rotating speed of the rotating speed calculating work feed motor 23 of main motor 13Reason. The content of second speed computing and third speed control processing (with reference to Figure 12)Content roughly the same.
As shown in figure 15, CPU44 revolves the master who obtains in S81 (with reference to Figure 13)Whether gyration DDPOS judges than intermediate angle FeedCenter is forward(S52). When more forward than intermediate angle FeedCenter (S52: be), CPU44Carry out the processing identical with the S53～S59 of third speed control processing, calculate rotating speedSP2a. Rotating speed SP2a is that work feed motor 23 use required time Ta rotate residue rotationThe rotating speed that angle RemFa is required. Processing is turned back to control place of four-speed degree by CPU44Reason.
If main anglec of rotation DDPOS is after intermediate angle FeedCenter(S52: no), CPU44 carries out and the S62～S68 of third speed control processingIdentical processing, calculates rotating speed SP2b. Rotating speed SP2b is work feed motor 23 use institutesThe Tb that takes time rotates the required rotating speed of residue anglec of rotation RemFb. CPU44 will processTurn back to four-speed degree control processing.
Turn back to the explanation of Figure 13. Whether CPU44 is less than rotating speed DDSpeed3000 (rpm) judge (S88). 3000 is second threshold values. The second threshold values alsoBe not limited to 3000, but be the value larger than the first threshold values. If rotating speed DDSpeed isMore than 3000 (S88: no), CPU44 is by the second speed computing at S87In the SP2a or the SP2b that calculate be defined as a computational speed (S89). If turnedSpeed DDSpeed is greater than 300 and be less than 3000 (S88: be), and CPU44 is according to existingThe rotating speed SP1a calculating in S82 and S87 or SP1b (following, be called SP1) withIt is electronic that SP2a or SP2b (following, to be called SP2) utilize specific ratio to calculate work feedThe rotating speed SP3 (S91, S92) of machine 23. Particularly, CPU44 utilizes belowFormula calculating SP1 accounts for the ratio rt (S91) of SP3.
rt＝(3000―DDSpeed)/2700
CPU44 utilizes following formula to calculate rotating speed SP3 (S92).
SP3＝rt·SP1+(1―rt)·SP2
For rotating speed SP3, rotating speed DDSpeed more approaches 3000, SP1 and accounts for SP3Ratio less, the ratio that SP2 accounts for SP3 is larger. CPU44 is by the rotating speed calculatingSP3 is defined as a computational speed (S93), and processing is transferred to S95.
CPU44 to computational speed with respect in upper once S96 or S98 to givingWhether the variable quantity of the speed that cloth motor 23 is indicated is last instruction speedBelow 10%, judge (S95). If variable quantity is (S95: be) below 10%,CPU44 directly drives work feed motor 23 (S96) with a computational speed, will locateReason turns back to S81. In the time that variable quantity is greater than 10% (S95: no), CPU44 calculatesMaking variable quantity is the secondary calculating speed (S97) below 10%. For example CPU44 passes throughLast instruction speed is multiplied by 0.9 or 1.1 value and calculates secondary calculating speed. CPU44 is electronic with the secondary calculating speed drive work feed calculating in S97Machine 23 (S98), turns back to S81 by processing. If the power supply of sewing machine 1 disconnects, knotRestraint four-speed degree control processing.
As mentioned above, the sewing machine 1 of the 4th embodiment is according to the target anglec of rotation and realityDeviation between the anglec of rotation on border is calculated rotating speed SP1a or SP1b. Sewing machine 1 basisThe rotating speed of main motor 13 calculates rotating speed SP2a or SP2b. Adopt rotating speed SP1a orSP1b, sewing machine 1 manually makes main shaft in the time that main motor 13 stops or operatorWhen 14 rotation, also can suitably keep work feed motor 23 to synchronize with main motor 13.If consider rotating speed SP2a or SP2b, sewing machine 1 increases at the rotating speed of main shaft 14Time also can by indicate to work feed motor 23 suitable rotating speed keep two electronicMachine 13,23 is synchronous. Sewing machine 1 changes according to the rotating speed DDSpeed of main motor 13The control method of work feed motor 23, thus can more suitably drive cloth feeding mechanism32. Specifically, sewing machine 1 can change and be suitable for low speed according to rotating speed DDSpeedTime rotating speed SP1a or SP1b and rotating speed SP2a or SP2b while being suitable for high speed betweenRatio, calculate the rotating speed SP3 of work feed motor 23. Sewing machine 1 is at rotating speedWhen DDSpeed is the speed (being 300～3000 in the present embodiment) of centre,Can be by suitably considering that rotating speed SP1a or SP1b and rotating speed SP2a or SP2b comeCalculate rotating speed SP3. Therefore, sewing machine 1 can be to be suitable for rotating speed DDSpeed moreRotating speed drive work feed motor 23.
In the 4th embodiment, for carrying out the CPU44 of processing of S81 of Figure 13Play a role as main anglec of rotation test section of the present invention, for carrying out Figure 14'sThe CPU44 of the processing of S13, S19 plays a role as work feed anglec of rotation test section,For carry out Figure 13 S91～S93, Figure 14 S16, S22, Figure 15 S59,The CPU44 of the processing of S68 plays a role as speed calculating part, for carrying out Figure 13The CPU44 of processing of S96, S98 play a role as drive control part.
For the CPU44 of processing of S52 of S12, Figure 15 that carries out Figure 14 as the phaseBetween judging part play a role, for carrying out the processing of S59 of S16, Figure 15 of Figure 14CPU44 as reversion before speed calculating part play a role, for carry out Figure 14 S22,The CPU44 of the processing of the S68 of Figure 15 plays a role as the rear speed calculating part of reversion.
For the CPU44 of processing of S16, S22 that carries out Figure 14 as First SpeedCalculating part plays a role, for carrying out the CPU44 of processing of S53, S62 of Figure 15Play a role as reverse angle acquisition unit, for carrying out the locating of S54, S63 of Figure 15The CPU44 of reason plays a role as main anglec of rotation surplus calculating part. For execution graphThe CPU44 of the processing of 13 S83 plays a role as speed acquisition unit, for carrying outThe CPU44 of the S56 of Figure 15, the processing of S65 plays a role as Time Calculation portion,For the CPU44 of processing of S58, S67 that carries out Figure 15 as the work feed anglec of rotationSurplus calculating part plays a role, for carrying out the processing of S59, S68 of Figure 15CPU44 plays a role as second speed calculating part, for carrying out the S84 of Figure 13Process CPU44 play a role as speed judging part, for carry out Figure 13 S85,The CPU44 of the processing of S96, S98 plays a role as the first drive division, for carrying outThe CPU44 of S89, the S93 of Figure 13, the processing of S96, S98 is as the second drive divisionPlay a role, for the CPU44 of processing of S91, S92 that carries out Figure 13 asThree speed calculating parts play a role.
The processing of the S81 of Figure 13 is equivalent to main anglec of rotation detecting step of the present invention,The S13 of Figure 14, the processing of S19 are equivalent to work feed anglec of rotation detecting step, Figure 14The processing of S52 of S12, Figure 15 be equivalent to during determining step, the S13 of Figure 14～Speed calculation procedure before the processing of S53～S59 of S16, Figure 15 is equivalent to reverse, figureSpeedometer after the processing of S19～S22 of 14, S62～S68 of Figure 15 is equivalent to reverseCalculate step.
Above-mentioned embodiment can carry out various distortion. The first embodiment～three is realThe sewing machine 1 of executing mode only at main anglec of rotation DDPOS in intermediate angleAfter FeedCenter time between the rotating speed calculating and last instruction speedVariable quantity judge. Therefore, sewing machine 1 can suppress rotating speed at work feed output shaft24 impacts that cause to sharply changing of a direction rotation midway. Sewing machine 1 also canWith in the time that main anglec of rotation DDPOS is more forward than intermediate angle FeedCenter also to becomeWhether change amount is that threshold values judges below, carries out the processing corresponding with judged result.The sewing machine 1 of the 4th embodiment with main anglec of rotation DDPOS whether than intermediate angleWhether FeedCenter is forward is independently that threshold values judges below to variable quantity, rootProcess according to judged result. The sewing machine 1 of the 4th embodiment also can be with first realExecute the sewing machine 1 of mode～three embodiment in the same manner only in the main anglec of rotationDDPOS carries out above-mentioned judgement, processing after intermediate angle FeedCenter time.
The sewing machine 1 of above-mentioned embodiment is middle at main anglec of rotation DDPOS ratio respectivelyWhen angle FeedCenter is forward and main anglec of rotation DDPOS in intermediate angleAfter FeedCenter time, by with the main anglec of rotation and work feed anglec of rotation meterCalculate rotating speed. Therefore, in the two, main electronic in the outlet of cloth feeding mechanism 32, loopMachine 13 is synchronizeed with work feed motor 23. Sewing machine 1 also can be only upper at cloth conveying teeth 33During portion is moved and is carried out work feed by the position of the top side of plate face than needle plate 15In keep two motor 13,23 synchronous.
The sewing machine 1 of above-mentioned embodiment is middle at main anglec of rotation DDPOS ratio respectivelyWhen angle FeedCenter is forward and when rear (before reversion, after reversion) obtainThe processing of work feed anglec of rotation RELPOS etc. Also can concentrate carry out before reversion withCommon processing after reversion. For example also can before the processing of S12, concentrate and carry out Fig. 9S13～S15 and S19～S21.
The circular of rotating speed can change. For example above-mentioned the 4th embodimentThe side that sewing machine 1 increases pro rata with the ratio of SP2 and the value of rotating speed DDSpeedFormula is calculated SP3 (with reference to S91, the S92 of Figure 13). The value of rotating speed DDSpeed and SP2Ratio also can be disproportionate. Sewing machine 1 also can have rotating speed by corresponding recordThe form stores of the ratio of the value of DDSpeed and SP1, SP2 in ROM45 etc.,From form, obtain the ratio corresponding with the value of rotating speed DDSpeed and calculate SP3. ?Basis in S16, the S22 of S16, the S22 of Fig. 9, S16, the S22 of Figure 11, Figure 14The method that deviation is calculated SP1a or SP1b can change. Sewing machine 1 also can be by makingWith corresponding record have the form of the value of deviation and SP1a or SP1b calculate SP1a orSP1b。
The processing sequence of the four-speed degree control processing shown in Figure 13 can change. For exampleSewing machine 1 also can obtain main motor after just starting four-speed degree control processing13 rotating speed DDSpeed, to driving with which in SP1, SP2, SP3Moving work feed motor 23 judges. Sewing machine 1 also can calculate in processing afterwardsBe judged as the rotating speed that will use, drive work feed motor 23. In control place of four-speed degreeIn reason, the target anglec of rotation of CPU44 by using work feed output shaft 24 is with actualDeviation between the work feed anglec of rotation calculate work feed motor 23 rotating speed (S13～S16). CPU44 also can be by using the target anglec of rotation of main output shaft with actualThe main anglec of rotation between deviation calculate rotating speed.
With reference to Figure 16～Figure 18, the 5th embodiment of the present invention is described. The paper of Figure 16Upside, downside, left distal side, right-hand nearly body side, right-hand distal side, left end are nearBody side is respectively upside, downside, right side, left side, front side, the rear side of sewing machine.
As shown in figure 16, the sewing machine of the 5th embodiment has Poewr transmission mechanism60. Poewr transmission mechanism 60 is Poewr transmission mechanism 35 (references of the first embodimentMode of texturing Fig. 4). Structure except Poewr transmission mechanism 60, CPU44'sControl methods etc. are identical with the first embodiment～four embodiment. Therefore, to moveCentered by the structure of force transfer mechanism 60 and action, the 5th embodiment is described.
The structure of Poewr transmission mechanism 60 is described. Poewr transmission mechanism 60 has grooved cam65. Grooved cam 65 is arranged on the work feed output shaft 24 of work feed motor 23. Grooved cam65 have lobe plate 61, base plate 66, side plate 67. Lobe plate 61 is in the form of annular discs. CamPlate 61 has the curved surface corresponding with the anglec of rotation of work feed output shaft 24. Lobe plate 61 existsOn curved surface, there is protuberance 62. Protuberance 62 contacts with contact site 57 described later. Base plate 66Be fixed on the bottom surface (surfaces of work feed output shaft 24 sides) of lobe plate 61. Base plate 66Be formed as the shape identical with the bottom surface of lobe plate 61 and than the bottom surface of lobe plate 61Greatly. Base plate 66 arranges side plate 67 in all ends. Contact site 57 is inserted into and is formed on camIn groove between plate 61 and side plate 67.
Contact site 57 is arranged on the top of the rear side of effect arm 54. Contact site 57 withThe length direction of effect arm 54 is orthogonal and to right-hand outstanding. Effect arm 54 is installedIn the right-hand member side of horizontal feed axle 36. The length of effect arm 54 and horizontal feed axle 36Direction orthogonal and rearward extend.
If the work feed output shaft of work feed motor 23 24 comes and goes rotate, lobe plate 61 is pastWraparound is moving. Effect arm 54 contact site 57 be accompanied by lobe plate 61 round rotation andAlong protuberance 62 up and down direction move. By the movement of contact site 57, effect arm54 rotate centered by horizontal feed axle 36. Horizontal feed axle 36 and effect arm 54Rotate linkedly and rotate. By the rotation of horizontal feed axle 36, cloth pushing table 34 forwards, backwardsDirection moves.
The action of Poewr transmission mechanism 60 is described with reference to Figure 16～Figure 18. As Figure 16 instituteShow, the protuberance 62 of lobe plate 61 contacts with the contact site 57 of effect arm 54. ContactPortion 57 is positioned at topmost. Cloth pushing table 34 is positioned at forefront. Work feed output shaft 24 is at camDuring the position of the contact site 57 of the protuberance 62 of plate 61 and effect arm 54 while contacting beBetween position.
If from the state-driven work feed motor 23 of Figure 16, work feed output shaft 24 is around a left sideClockwise rotating under side-looking state. The protuberance 62 of lobe plate 61 is accompanied by work feed outputThe rotation of axle 24 and around clockwise rotating. Protuberance 62 forwards moves. Effect arm 54Contact site 57 move downwards along the curved surface of lobe plate 61. Effect arm 54 is with waterCentered by flat conveying axis 36 around left side depending on rotating counterclockwise under state. Horizontal feed axle36 with effect arm 54 rotation linkedly around left side depending on rotating counterclockwise under state.Because connecting portion 40 and horizontal feed axle 36 are looked the inverse time under state around left side linkedlyPin rotates, and therefore cloth pushing table 34 rearward moves. Work feed output shaft 24 turns to rotationOne end (with reference to Figure 17) of scope.
Work feed motor 23 makes the rotation direction reversion of work feed output shaft 24. Work feed outputAxle 24 is around rotating counterclockwise. Lobe plate 61 be accompanied by work feed output shaft 24 rotation andAround rotating counterclockwise. Work feed output shaft 24 moves to centre position. On protuberance 62Push away effect arm 54 contact site 57, therefore act on arm 54 taking horizontal feed axle 36 asCenter around left side depending on clockwise rotating under state. Horizontal feed axle 36 and effect arm54 rotation linkedly around left side depending on clockwise rotating under state. Due to connecting portion 40With horizontal feed axle 36 linkedly around left side depending on clockwise rotating under state, therefore sendCloth platform 34 forwards moves. Poewr transmission mechanism 60 turns back to the state of Figure 16.
Work feed output shaft 24 continues around left side depending on rotating counterclockwise under state. Lobe plate61 are accompanied by the rotation of work feed output shaft 24 and continue to look the inverse time under state around left sidePin rotates. Protuberance 62 rearward moves. The contact site 57 of effect arm 54 is along camThe curved surface of plate 61 moves downwards. Effect arm 54 centered by horizontal feed axle 36 aroundLeft side is depending on rotating counterclockwise under state. Horizontal feed axle 36 turns with effect arm 54Moving linkedly around left side depending on rotating counterclockwise under state. Due to connecting portion 40 and levelConveying axis 36 linkedly around left side depending on rotating counterclockwise under state, therefore cloth pushing table 34Rearward move. Work feed output shaft 24 moves to the other end (reference of slewing areaFigure 18).
Work feed motor 23 makes the rotation direction reversion of work feed output shaft 24. Work feed outputAxle 24 around left side depending on clockwise rotating under state. Lobe plate 61 is accompanied by work feed outputThe rotation of axle 24 and around left side depending on clockwise rotating under state. As shown in figure 16, sendCloth output shaft 24 moves to centre position. Effect arm 54 taking horizontal feed axle 36 as inThe heart around left side depending on clockwise rotating under state. Owing to pushing away effect arm 54 on protuberance 62Contact site 57, therefore the rotation of horizontal feed axle 36 and effect arm 54 linkedly aroundLeft side is depending on clockwise rotating under state. Because connecting portion 40 and horizontal feed axle 36 connectMoving ground around left side depending on clockwise rotating under state, before therefore cloth pushing table 34 moves toSide.
In the above description, Poewr transmission mechanism 60 is equivalent to the first power of the present inventionTransmission mechanism, grooved cam 65 is equivalent to the first cam of the present invention, and protuberance 62 is equivalent toThe first protuberance of the present invention.
As mentioned above, the sewing machine of the 5th embodiment has Poewr transmission mechanism 60.Poewr transmission mechanism 60 is by using cam mechanism that the power of work feed motor 23 is passedBe delivered to horizontal feed axle 36. Poewr transmission mechanism 60 has grooved cam 65. Grooved cam 65Be arranged on the top of the work feed output shaft 24 of work feed motor 23. The cam of grooved cam 65Plate 61 has protuberance 62 on curved surface. Protuberance 62 by the rotation of lobe plate 61 with establishPut at the contact site 57 on the top that acts on arm 54 and contact. Work feed output shaft 24 is protrudingPosition when portion 62 contacts with the contact site 57 of effect arm 54 is centre position. SendThe work feed output shaft 24 of cloth motor 23 comes and goes and rotates. Protuberance 62 front and back of lobe plate 61Come and go mobile.
Poewr transmission mechanism 60 can by work feed output shaft 24 facing one direction andEach rotation that rightabout rotates is converted to centered by horizontal feed axle 36 and makes actuation armThe reciprocating swing oscillating motion once along the vertical direction of the top of portion 54. If effect arm54 top along the vertical direction reciprocating swing once, horizontal feed axle 36 comes and goes and rotatesOnce, cloth pushing table 34 comes and goes and moves once along fore-and-aft direction. If work feed output shaft 24 toDirection or rightabout rotate, and cloth pushing table 34 can come and go and move along fore-and-aft directionMove once. Poewr transmission mechanism 60 can reduce the rotation direction of work feed motor 23Switching frequency. The sewing machine of the 5th embodiment can be by reducing work feed motor 23The switching frequency of rotation direction reduce the load acting on work feed motor 23.
With reference to Figure 19～Figure 21, the 6th embodiment of the present invention is described. The paper of Figure 19Upside, downside, left distal side, right-hand nearly body side, right-hand distal side, left end are nearBody side is respectively upside, downside, right side, left side, front side, the rear side of sewing machine.As shown in figure 19, the sewing machine of the 6th embodiment is except having first embodimentBeyond Poewr transmission mechanism 35, also have and carry up and down motor 75, power transfer machineStructure 80.
Carry up and down motor 75 to be configured between cloth pushing table 34 and work feed motor 23.Carrying up and down motor 75 is stepping motors. Carry up and down motor 75 to make cloth pushing table34 move along the vertical direction. Carry up and down the driving shaft 76 of motor 75 to prolong to leftStretch. Driving shaft 76 rotates in the angular range that can rotate of regulation.
Poewr transmission mechanism 80 moves up and down cloth pushing table 34. Poewr transmission mechanism 35 withThe first embodiment makes cloth pushing table 34 move horizontally in the same manner. The seam of the 6th embodimentThe structure except Poewr transmission mechanism 80 of machine of threading is identical with the first embodiment.
Poewr transmission mechanism 80 has the first arm 81, the second arm 82, carries up and downAxle 91, effect arm 78, connecting portion 93, connecting portion 94.
One end of the first arm 81 is orthogonal is installed on the driving of carrying up and down motor 75The left end of axle 76. Mode and second arm of the other end of the first arm 81 rotatingOne end of portion 82 is connected. The other end of the second arm 82 with the mode that can rotate withOne end of effect arm 78 is connected. The other end of the first arm 81 and the second arm 82The part that is connected of one end be linking part 85. The other end of the second arm 82 and effectThe part that one end of arm 78 is connected is linking part 86. If driving shaft 76 is toward wraparoundMoving, linking part 85 comes and goes and moves along the vertical direction, and linking part 86 is past along fore-and-aft directionReturn movement. The other end of effect arm 78 is arranged on the right-hand member of upper and lower conveying axis 91Side. The length direction of effect arm 78 and upper and lower conveying axis 91 is orthogonal and to the lower sideExtend. Upper and lower conveying axis 91 is carrying the upper left side of motor 75 rotating up and downMode be supported on support portion 2. Upper and lower conveying axis 91 extends along left and right directions.
The orthogonal left part that is installed on upper and lower conveying axis 91, rear end of connecting portion 94. ConnectThe front end of portion 94 is connected with the mode that can rotate and the bottom of connecting portion 93. ConnectThe upper end that meets portion 93 is connected with the mode that can rotate and the rearward end of cloth pushing table 34.
The action of Poewr transmission mechanism 80 is described with reference to Figure 20, Figure 21. As shown in figure 20,In scenario A, the first arm 81 and the second arm 82 are positioned on same level straight line.Linking part 86 is positioned at the rear of linking part 85. Effect arm 78 and the first arm 81 and theTwo arms 82 are substantially vertical. Cloth pushing table 34 is positioned at lower position. Cloth conveying teeth 33 upperPortion is positioned at than the plate face of needle plate 15 position on the lower. Driving shaft 76 is at the first arm 81Position while being positioned on same level straight line with the second arm 82 is centre position.
If drive and carry up and down motor 75 from scenario A, driving shaft 76 is looked around left sideClockwise rotating under state, becomes scenario B. Because being accompanied by, drives the first arm 81The rotation of moving axis 76 and around left side depending on clockwise rotating under state, therefore linking part 85Be moved upward. Therefore, the first arm 81 and the second arm 82 are taking linking part 85 as basePoint is bent into roughly L font upward. The second arm 82 centered by linking part 85 aroundLeft side is depending on rotating counterclockwise under state. By the rotation of the second arm 82, linking part86 forwards move. Linking part 86 is forwards drawn in the top of effect arm 78. EffectArm 78 centered by upper and lower conveying axis 91 around left side depending on rotating counterclockwise under state.Upper and lower conveying axis 91 is looked under state around left side linkedly with the rotation of effect arm 78Rotate counterclockwise. Because connecting portion 94 and upper and lower conveying axis 91 are looked shape around left side linkedlyRotating counterclockwise under state, therefore pushes away cloth pushing table 34 on connecting portion 93. Therefore, work feedThe top of tooth 33 is roughly consistent with the plate face of needle plate 15. If further drive from scenario BCarry up and down motor 75, become scene C. In scene C, driving shaft 76 rotatesTo an end of slewing area. Cloth pushing table 34 moves to top position. Cloth conveying teeth 33Top is outstanding from the upper surface of needle plate 15 via work feed perforation 19 (with reference to Fig. 2).
As shown in figure 21, carry up and down motor 75 from scene C reversion if make, driveMoving axis 76 depending on rotating counterclockwise under state, becomes scene D around left side. Due to firstArm 81 be accompanied by driving shaft 76 rotation and around left side depending on turning counterclockwise under stateMoving, therefore linking part 85 moves downwards from top position. Effect arm 78 is with up and downCentered by conveying axis 91, rotate. Upper and lower conveying axis 91 and the rotation interlock that acts on arm 78Ground around left side depending on clockwise rotating under state. Due to connecting portion 94 and upper and lower conveying axis91 linkedly around left side depending on clockwise rotating under state, therefore connecting portion 93 is downwardsDraw in cloth pushing table 34. Therefore, the upper surface of the top of cloth conveying teeth 33 and needle plate 15 roughlyUnanimously. If driving shaft 76 is further rotated further, become scene E. The first arm81 and second arm 82 be positioned on same level straight line, effect arm 78 reverts to and theOne arm 81 is substantially vertical with the second arm 82. Cloth pushing table 34 moves to and descends orientation mostPut. The top of cloth conveying teeth 33 is positioned at than the upper surface of needle plate 15 position on the lower.
Make if further continue driving shaft 76 around left side depending on rotating counterclockwise under state,Become scene F. The first arm 81 is accompanied by the rotation of driving shaft 76 and continues around a left sideRotating counterclockwise under side-looking state. Driving shaft 76 turns to the other end of slewing areaPortion. Linking part 85 moves to lower position. The first arm 81 and the second arm 82 are to connectKnot 85 is that basic point is bent into roughly L font in below to a side contrary to scene C. TheTwo arms 82 centered by linking part 85 around left side depending on clockwise rotating under state. LogicalCross the rotation of the second arm 82, linking part 86 forwards moves, therefore, and linking part 86Forwards draw in the top of effect arm 78. Effect arm 78 taking upper and lower conveying axis 91 asCenter around left side depending on rotating counterclockwise under state. Upper and lower conveying axis 91 and effect arm78 rotation linkedly around left side depending on rotating counterclockwise under state. Due to connecting portion 94With upper and lower conveying axis 91 linkedly around left side depending on rotating counterclockwise under state, therefore connectConnect and in portion 93, push away cloth pushing table 34. Cloth pushing table 34 moves to top position. Cloth conveying teeth 33Top is positioned at more top than the upper surface of needle plate 15 via work feed perforation 19 (with reference to Fig. 2)Position. Carry up and down motor 75 to make the rotation direction reversion of driving shaft 76. DriveAxle 76 around left side depending on clockwise rotating under state. Poewr transmission mechanism 80 turns back to figure20 scenario A.
Poewr transmission mechanism 80 repeats above-mentioned scenario A～scene F. Poewr transmission mechanism80 can by driving shaft 76 facing one direction and rightabout rotate each rotationBeing converted to centered by upper and lower conveying axis 91 makes the top that acts on arm 78 along front and backTo reciprocating swing oscillating motion once. If effect arm 78 comes and goes pendulum along fore-and-aft directionMoving once upper and lower conveying axis 91 comes and goes and rotates once, and cloth pushing table 34 along the vertical directionRound movement once. That is, if driving shaft 76 rotates to a direction or rightabout,Cloth pushing table 34 comes and goes and moves once along the vertical direction. Poewr transmission mechanism 80 can subtractThe switching frequency of few rotation direction of carrying up and down motor 75. Therefore, sewing functionEnough reduce work by the switching frequency that reduces the rotation direction of carrying up and down motor 75For carrying up and down the load on motor 75.
In the above description, carry up and down motor 75 to be equivalent to the second electricity of the present inventionMotivation, driving shaft 76 is equivalent to the second output shaft of the present invention, connecting portion 93,94 phasesWhen in the second connecting elements of the present invention, act on arm 78 and be equivalent to of the present invention upper and lowerEffect arm, Poewr transmission mechanism 80 is equivalent to the second Poewr transmission mechanism of the present invention,The first arm 81 is equivalent to lower arm part on of the present invention first, and the second arm 82 is equivalent toLower arm part on of the present invention second, linking part 85 is equivalent to the second linking part of the present invention.
As mentioned above, the sewing machine of the 6th embodiment has Poewr transmission mechanism 80.Poewr transmission mechanism 80 is mechanisms that cloth pushing table 34 is moved up and down. Poewr transmission mechanism80 can reduce the switching frequency of the rotation direction of carrying up and down motor 75. The 6th is realThe sewing machine of executing mode can be by reducing the rotation direction of carrying up and down motor 75Switching frequency reduces and acts on the load of carrying up and down on motor 75.
Above-mentioned embodiment can carry out various distortion. In the first embodiment, movingForce transfer mechanism 35 at cloth pushing table 34 in the time that move the position of the forefront of moving range,The linear state being positioned on straight line from the first arm 37 and the second arm 39 starts action.For example Poewr transmission mechanism 35 also can be at cloth pushing table 34 the rear from moving rangePosition start action from above-mentioned linear state while moving.
The 6th embodiment has Poewr transmission mechanism 35,80, but for example also canOnly there is Poewr transmission mechanism 80, and adopt well-known conveying mechanism as levelThe mechanism of mobile cloth pushing table 34.
In the 6th embodiment, Poewr transmission mechanism 80 utilizes linkage by upper and lowerCarry the driving force of motor 75 to be delivered to upper and lower conveying axis 91, but also can be as theThe Poewr transmission mechanism 60 of five embodiments utilizes cam mechanism transmission like that.
Carry starting position and the setting of carrying end position to set respectively,And can utilize and carry starting position and cloth feed amount to set.

Claims (5)

1. a sewing machine (1), has:
Work feed motor (23), it has work feed output shaft (24), makes above-mentioned work feedOutput shaft rotation; And
Cloth feeding mechanism (32), it makes above-mentioned work feed output by above-mentioned work feed motorAxle rotate and along continuous straight runs work feed is characterized in that,
This sewing machine has work feed Poewr transmission mechanism (35,60), this work feed powerTransmission mechanism by above-mentioned work feed output shaft facing one direction and rightabout rotateEach rotation action is converted to the oscillating motion once of the horizontal reciprocating swing of above-mentioned cloth feeding mechanismAnd be delivered to above-mentioned cloth feeding mechanism,
Above-mentioned cloth feeding mechanism (32) has the cloth pushing table of horizontal supporting cloth conveying teeth (33)(34)，
Above-mentioned work feed Poewr transmission mechanism (35) has horizontal feed axle (36), this waterOne end of flat conveying axis is by means of work feed linkage and above-mentioned work feed output shaft (24)Be connected, the other end is connected by means of the first connecting elements (40) and above-mentioned cloth pushing table,By connecting with the rotation being driven by above-mentioned work feed motor (23) of above-mentioned work feed output shaftRotate to give the conveying action of above-mentioned cloth pushing table horizontal direction movingly,
Above-mentioned work feed linkage has:
Horizontal force arm (38,54), its one end and above-mentioned horizontal feed axle above-mentionedOne distolateral orthogonal setting; And
Switching mechanism (37,39,65), its by above-mentioned work feed output shaft towards oneEach rotation action that individual direction and rightabout rotate is converted to above-mentioned horizontal feed axleCentered by make above-mentioned horizontal force arm the oscillating motion once of other end reciprocating swingAnd power is delivered to above-mentioned horizontal feed axle;
Above-mentioned switching mechanism has:
The first horizontal arm section (37), its one end and the orthogonal link of above-mentioned work feed output shaft;
The second horizontal arm section (39), its in the mode that can rotate respectively with above-mentionedThe above-mentioned other end of the other end of one horizontal arm section and above-mentioned horizontal force arm is connectedKnot;
Using above-mentioned work feed output shaft if upper/lower positions is as the court of above-mentioned work feed output shaftWhen in the slewing area of rotating to an above-mentioned direction and rightabout the centre position,The above-mentioned other end of above-mentioned horizontal force arm is positioned at one end of movable range, this positionFor above-mentioned the first horizontal arm section and above-mentioned the second horizontal arm section are by above-mentioned work feed output shaftRotation and rotate and make the first horizontal arm section and above-mentioned the second horizontal arm section each other greatlyCause the position on same straight line;
In the time that above-mentioned cloth pushing table is positioned at one end of conveying actuating range of horizontal direction, onState work feed output shaft and be positioned at above-mentioned centre position.
2. sewing machine according to claim 1, is characterized in that, send when above-mentionedWhen cloth output shaft rotates taking above-mentioned centre position as mediad both sides, above-mentioned the first levelThereby arm and above-mentioned the second horizontal arm section are rotated bending each other.
3. sewing machine according to claim 2, is characterized in that, send when above-mentionedWhen cloth output shaft is arranged in any one of two ends of above-mentioned slewing area, above-mentionedThe above-mentioned other end of horizontal force arm is positioned at the other end of above-mentioned movable range,
When above-mentioned cloth pushing table is positioned at the other end of the above-mentioned conveying actuating range of horizontal directionTime, above-mentioned work feed output shaft be arranged in above-mentioned slewing area two ends any oneIndividual.
4. according to the sewing machine described in any one in claim 1～3, its feature existsIn, this sewing machine has:
Carry up and down motor (75), it has carries output shaft (76) up and down, makesThe above-mentioned output shaft rotation of carrying up and down; And
Upper and lower transmitting power transmission mechanism (80), it is by the above-mentioned output shaft of carrying up and downFacing one direction and rightabout rotate each rotation action be converted to above-mentioned work feedMechanism swings up and down oscillating motion once and is delivered to above-mentioned cloth feeding mechanism;
Above-mentioned upper and lower transmitting power transmission mechanism has upper and lower conveying axis (91), on thisOne end of lower conveying axis is by means of upper and lower conveying connection rod mechanism and the above-mentioned output of conveying up and downAxle is connected, and the other end is by means of the second connecting elements (93,94) and above-mentioned work feedPlatform is connected, by with above-mentioned carry up and down output shaft by above-mentioned carry up and down electronicIt is moving that the rotation that machine drives rotates to give the conveying of above-mentioned cloth pushing table above-below direction linkedlyDo,
Above-mentioned upper and lower conveying connection rod mechanism has:
Act on up and down arm (78), above-mentioned one of its one end and above-mentioned upper and lower conveying axisDistolateral orthogonal setting; And
Upper and lower switching mechanism (81,82,85), it is by the above-mentioned output shaft of carrying up and downFacing one direction and rightabout rotate each rotation be converted to above-mentioned defeated up and downSend and make the swing once of the above-mentioned other end reciprocating swing that acts on up and down arm centered by axleMove and power is delivered to above-mentioned upper and lower conveying axis.
5. sewing machine according to claim 4, is characterized in that, above-mentioned upper and lowerSwitching mechanism has:
Lower arm part on first (81), its one end and the above-mentioned output shaft of carrying are up and down orthogonalLink;
Lower arm part on second (82), its in the mode that can rotate respectively with above-mentionedOn one, the other end of lower arm part and the above-mentioned other end that acts on up and down arm are connected;
Using above-mentioned carry up and down output shaft as upper/lower positions as above-mentioned carry up and down defeatedThe centre in the slewing area of an above-mentioned direction and rightabout rotation of shaft, the above-mentioned above-mentioned other end that acts on up and down arm is positioned at one end of movable range when the position,This position be on above-mentioned first in lower arm part and above-mentioned second lower arm part by above-mentioned upper and lowerCarry the rotation of output shaft and rotate and make on above-mentioned first in lower arm part and above-mentioned secondLower arm part is the position on same straight line roughly each other.
CN201410384933.5A 2011-07-25 2012-07-24 The control method of sewing machine and sewing machine Active CN104120548B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2011-161755 2011-07-25
JP2011161755A JP5845683B2 (en) 2011-07-25 2011-07-25 sewing machine
JP2011162033A JP2013022362A (en) 2011-07-25 2011-07-25 Sewing machine and method for controlling sewing machine
JP2011-162033 2011-07-25
CN201210258755.2A CN102899813B (en) 2011-07-25 2012-07-24 Sewing machine and control method of sewing machine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CN201210258755.2A Division CN102899813B (en) 2011-07-25 2012-07-24 Sewing machine and control method of sewing machine

Publications (2)

Publication Number Publication Date
CN104120548A CN104120548A (en) 2014-10-29
CN104120548B true CN104120548B (en) 2016-05-11

Family

ID=47572286

Family Applications (3)

Application Number Title Priority Date Filing Date
CN201410384933.5A Active CN104120548B (en) 2011-07-25 2012-07-24 The control method of sewing machine and sewing machine
CN 201220361687 Expired - Lifetime CN202766776U (en) 2011-07-25 2012-07-24 Sewing machine
CN201210258755.2A Active CN102899813B (en) 2011-07-25 2012-07-24 Sewing machine and control method of sewing machine

Family Applications After (2)

Application Number Title Priority Date Filing Date
CN 201220361687 Expired - Lifetime CN202766776U (en) 2011-07-25 2012-07-24 Sewing machine
CN201210258755.2A Active CN102899813B (en) 2011-07-25 2012-07-24 Sewing machine and control method of sewing machine

Country Status (1)

Country Link
CN (3) CN104120548B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104775236B (en) * 2015-04-30 2017-02-22 杰克缝纫机股份有限公司 Sewing machine feeding mechanism
JP6520399B2 (en) * 2015-05-28 2019-05-29 ブラザー工業株式会社 Sewing machine and control method of the sewing machine
TWI706063B (en) * 2015-09-18 2020-10-01 日商重機股份有限公司 Sewing machine
CN105088547B (en) * 2015-09-30 2018-11-27 杰克缝纫机股份有限公司 Sewing machine feed lifting feeding mechanism and sewing machine
CN105113136B (en) * 2015-09-30 2018-03-06 杰克缝纫机股份有限公司 Sewing machine feeding mechanism and sewing machine
CN105155142B (en) * 2015-09-30 2017-12-29 杰克缝纫机股份有限公司 Dual-motors Driving feed mechanism and sewing machine
CN105113152B (en) * 2015-09-30 2018-04-17 杰克缝纫机股份有限公司 Sewing machine
CN105442195B (en) * 2015-12-29 2018-11-23 杰克缝纫机股份有限公司 Sewing machine
CN105586723A (en) * 2016-02-18 2016-05-18 上海鲍麦克斯电子科技有限公司 Transmission mechanism of industrial sewing machine
CN105908388B (en) * 2016-05-26 2019-02-01 江苏尚诚纺织科技有限公司 A kind of sewing machine boosting flushes component
CN108385288B (en) * 2018-05-21 2020-11-27 杰克缝纫机股份有限公司 Sewing machine and cloth feeding mechanism thereof
CN110217636B (en) * 2019-05-24 2021-08-20 北京创新古道清洁科技有限公司 Method and device for conveying linen
CN110093722B (en) * 2019-06-05 2021-03-12 杰克缝纫机股份有限公司 Control method and control system for automatically switching sewing modes in sewing machine
CN110952227A (en) * 2019-12-17 2020-04-03 杰克缝纫机股份有限公司 Stitch length detection method and device, and memory sewing control method and control system
CN114575052A (en) * 2020-11-30 2022-06-03 琦星智能科技股份有限公司 Feed dog subassembly of disconnect-type sewing machine
CN113852306B (en) * 2021-09-30 2024-02-13 浙江众邦机电科技有限公司 Method and system for controlling cloth feeding motor of sewing machine, sewing machine and storage medium

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5613897Y2 (en) * 1974-09-06 1981-03-31
JPS5492444A (en) * 1977-12-28 1979-07-21 Tokyo Juki Industrial Co Ltd Controller for cloth feed on sewing machine
JP3149889B2 (en) * 1992-02-25 2001-03-26 ブラザー工業株式会社 Sewing machine cloth feed controller
CN1107136C (en) * 1997-06-16 2003-04-30 重机公司 Cloth feeding method and apparatus for sewing machine
JP2004329394A (en) * 2003-05-02 2004-11-25 Juki Corp Feeding drive for sewing machine
JP4267520B2 (en) * 2004-05-24 2009-05-27 ペガサスミシン製造株式会社 Sewing machine feeder
JP4624169B2 (en) * 2004-09-22 2011-02-02 Ｊｕｋｉ株式会社 Sewing machine feeder
JP2006271505A (en) * 2005-03-28 2006-10-12 Brother Ind Ltd Controller of sewing machine
JP2009172001A (en) * 2008-01-21 2009-08-06 Juki Corp Sewing machine
JP2009240389A (en) * 2008-03-28 2009-10-22 Juki Corp Sewing machine
JP5384956B2 (en) * 2009-01-21 2014-01-08 Ｊｕｋｉ株式会社 sewing machine

Also Published As

Publication number Publication date
CN104120548A (en) 2014-10-29
CN102899813B (en) 2014-09-03
CN102899813A (en) 2013-01-30
CN202766776U (en) 2013-03-06

Similar Documents

Publication Publication Date Title
CN104120548B (en) The control method of sewing machine and sewing machine
CN101713130B (en) Seamer
CN1995519A (en) Cloth-feeding device of sewing machine
CN103290621A (en) Sewing machine
CN102733098B (en) Sewing machine and method for controlling sewing machine
CN102733097B (en) Sewing machine and control method for the same
CN101713128B (en) A cloth clamp device of a seamer
CN103696150B (en) Sewing machines
CN103993436B (en) Sewing machine, sewing machine control method
CN101244574A (en) Rotation positioning method for turntable type fusing machine and mechanism thereof
CN101545180B (en) Cloth cutting device of button hole catch sewing machine
CN101338490A (en) Sewing machine
CN102634940B (en) A sewing machine and a cutting method of the same
CN102653902B (en) Sewing machine
JPH05228276A (en) Cloth feed control device for sewing machine
CN1524989B (en) Electronic type sawtooth line track sewing mechine
CN101724986A (en) Sewing machine
CN101041924B (en) Buttonhole sewing machine
JP2013022362A (en) Sewing machine and method for controlling sewing machine
CN105133197B (en) Sewing machine
CN103361890B (en) Sewing machine
SE508966C2 (en) Method for producing coordinate values for needle insertion points in an electronically controlled sewing machine and device for carrying out the procedure
CN103166553A (en) Control method of stepping motor
CN1609311B (en) Control device for textile machines
CN1332087C (en) Electronic sewing machine

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant