CN100513664C - Catch-stitch sewing machine - Google Patents
Catch-stitch sewing machine Download PDFInfo
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- CN100513664C CN100513664C CNB031593704A CN03159370A CN100513664C CN 100513664 C CN100513664 C CN 100513664C CN B031593704 A CNB031593704 A CN B031593704A CN 03159370 A CN03159370 A CN 03159370A CN 100513664 C CN100513664 C CN 100513664C
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- shank
- sewing machine
- opposing party
- tortuous
- shuttle
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Abstract
To provide a zigzag stitch sewing machine capable of forming a well-balanced seam, regardless of the moving direction of a needle.In the case of swinging the needle to the left, when a basic operation time has come (the rotation angle of a main shaft is 300[deg.]), a needle bar 3 is swung in a section for swinging the needle to the left. In the case of swinging the needle to the right, when a time obtained by adding a delay value (90[deg.], this time) to the basic operation time has come (the rotation angle of the main shaft is 30[deg.]), the needle bar 3 is swung in a section for swinging the needle to the right.(C)2004,JPO.
Description
Technical field
The present invention relates to the tortuous stitching seam sewing machine that suture needle moves back and forth along the direction with processing cloth conveyance direction quadrature.
Background technology
Application discloses shown in 2001-No. 190877 communiques tortuous stitching seam sewing machine in the past as Japanese Patent Laid; by the actuator of stepper motor etc. is controlled; make suture needle along swinging, on processing cloth, form the stitching of tortuous stitch pattern with the direction of processing cloth conveyance direction quadrature.In this occasion, suture needle and its moving direction are irrelevant, swing with certain timing.
But, irrelevant with the moving direction of suture needle, when suture needle being swung with certain timing, when the stitching that forms when suture needle moves right is moved to the left with suture needle between the stitching of formation the elasticity of line etc. different, tend to occur the unbalanced phenomenon of stitching.
Again, in industrial sewing machines, application discloses shown in 2001-No. 145794 communiques as Japanese Patent Laid, have a kind of have be located at the tortuous stitching seam sewing machine that Sewing machines props up the rotary thread take-up tension lever of arm leading section.In having the industrial tortuous stitching seam sewing machine of this rotary thread take-up tension lever, the unbalanced phenomenon of stitching seam sewing machine stitching that suffers setback especially easily illustrates its reason with reference to Fig. 7.
Tortuous stitching seam sewing machine shown in Figure 7 has the rotary thread take-up tension lever 9 of being located at arm 1 leading section.From described rotary thread take-up tension lever 9 draw reach the standard grade 10 by hanging wire portion 18 guiding shanks 3 until suture needle 2.For ease of explanation, among Fig. 7, suture needle 2, the shank 3 having represented to move to suture needle 2, the shank 3 on right side and moved to the left side.
In this tortuous stitching seam sewing machine, suture needle 2 the occasion that moves to the right side with move to the left side occasion the time, the distance between suture needle 2 and the hanging wire portion 18 is variant, and described rotary thread take-up tension lever 9 will reach the standard grade 10 on the amount of drawing be certain.Therefore, when suture needle 2 moves to the right side, the amount of drawing surplus on 10 integral body of reaching the standard grade, reaching the standard grade 10 is tightened up, but when suture needle 2 moves to the left side, draws quantity not sufficient on 10 integral body of reaching the standard grade, reach the standard grade 10 take place lax.That is, because of reach the standard grade 10 on the amount of drawing inconsistent, so about stitching between can lose the harmony of line elasticity etc.
In addition, promptly prop up the tortuous stitching seam sewing machine that the arm front has the thread take-up tension lever that moves up and down even have the tortuous stitching seam sewing machine tortuous stitching seam sewing machine in addition of rotary thread take-up tension lever, move to the occasion and the occasion that moves to the left side on right side in suture needle, when producing difference in the distance between hanging wire portion and the suture needle, about stitching between can property out of balance.
In order to solve the above problems, the object of the invention is, the tortuous stitching seam sewing machine that a kind of moving direction with suture needle is irrelevant, can form balanced stitching is provided.
Summary of the invention
Tortuous stitching seam sewing machine of the present invention, having the bottom is installed with the shank that can adorn the modus ponens suture needle and makes described shank move back and forth the needle bar swinging mechanism of usefulness along the direction with processing cloth conveyance direction quadrature, it is characterized in that described needle bar swinging mechanism comprises: the actuator that described shank is moved back and forth; And by controlling described actuator, making the different control device of mobile timing of described shank corresponding to the moving direction of described shank.
Adopt this structure, can described shank be moved.Thus, irrelevant with the moving direction of suture needle, can form balanced stitching.
The simple declaration of accompanying drawing
Fig. 1 is the stereogram of expression left side structure one embodiment of the invention, tortuous stitching seam sewing machine.
Fig. 2 is the front elevation of the tortuous stitching seam sewing machine summary internal structure in the expression present embodiment.
Fig. 3 is the block diagram of the tortuous stitching seam sewing machine summary electrical structure in the expression present embodiment.
Fig. 4 A is the figure of position data one example of the tortuous stitch pattern of expression.
Fig. 4 B is the figure of expression according to the stitching shape of the tortuous style of the formation of the position data shown in Fig. 4 A.
Fig. 5 makes the flow chart of action for expression.
Fig. 6 catches figure with the motion track of the curve movement of shuttle and suture needle for expression thread take-up tension lever and line.
Fig. 7 is the state diagram of reaching the standard grade of shank when swinging of the traditional tortuous stitching seam sewing machine of explanation.
The specific embodiment
Describe the present invention with reference to the accompanying drawings in detail.
Fig. 1 to Fig. 6 represents one embodiment of the invention.As shown in Figure 1, be supported with shank 3 and will process cloth at the left part (head) of the arm 1 of tortuous stitching seam sewing machine M and be pressed in the presser feet of using on the needle plate (not shown) 4.Be equipped with in the bottom of described shank 3 and can adorn the suture needle 2 of getting.Be equipped with the adjustment screw 5 that described presser feet 4 pressure of adjusting are used on the top of described arm 1 left part.
Front face at an arm 1 is equipped with the guidance panel 6 of selecting the stitching shape and setting usefulness such as stitching size.
Left part at an arm 1 is equipped with panel 7.Be formed with circular hole (not shown) on the top of described panel 7, can rotating finger plate 8 in intercalation in described circular hole.Described finger plate 8 is that driving is turned round at the center with main shaft (going up axle) the 60 identical rotary middle spindle a that extend with left and right directions, and 60 on described main shaft is driven by electrical motor of sewing machine 53 (with reference to Fig. 3) revolution.In the left side of finger plate 8, rotary thread take-up tension lever 9 is fixed by a plurality of primary screw 9c.Adopt said structure, rotary thread take-up tension lever 9 drives around the rotary middle spindle a revolution identical with main shaft 60.
Be equipped with the backplate lid 20 of rotary thread take-up tension lever 9 on the left side of panel 7.Described backplate lid 20 has metal system for example the thread take-up tension lever backplate 21 and the lid member 30 of aluminum that is fixed in panel 7 left sides.Described thread take-up tension lever backplate 21 has annulus (not shown) that is positioned at described thread take-up tension lever 9 peripheries and the installation portion 21a that extends from the bottom of described annulus downwards.Described lid member 30 by the metal system of the annulus that can be installed on thread take-up tension lever backplate 21 by pivot fulcrum 50 with reversing for example aluminum annular cover body 31 and will cover the synthetic tree that the opening of body 31 covers and refer to that the transparent window lid of making 41 constitutes.
Be equipped with hanging wire portion 11 on the top of described arm 1.Be equipped with tension disk portion 13,15 in the front portion of described arm 1.Near described tension disk portion 13, be equipped with hanging wire portion 12,14, near described tension disk portion 15, be equipped with hanging wire portion 16.And, be equipped with hanging wire portion 17,18 in the bottom of arm 1 left part, be equipped with hanging wire portion 19 in the bottom of shank 3.
From wire-threading device etc. reach the standard grade 10 via described hanging wire portion 11,12, tension disk portion 13, hanging wire portion 14, tension disk portion 15, hanging wire portion 16,17 for what line portion (not shown) drew, hang on the rotary thread take-up tension lever 9 from the place ahead.Hang over reaching the standard grade on the rotary thread take- up tension lever 9 and 10 draw from the below, hang in the described hanging wire portion 18,19 after, by the eyelet of suture needle 2.Reach the standard grade 10 along with the revolution or the tension of rotary thread take-up tension lever 9 or loosen.In addition, reach the standard grade part from hanging wire portion 17 to rotary thread take-up tension lever 9 and the part from rotary thread take-up tension lever 9 to hanging wire portion 18 in 10 are by the gap between panel 7 and the thread take-up tension lever backplate 21.
Inside in Sewing machines base plate (not shown) is equipped with rotary hook drive device 62, described rotary hook drive device 62 is caught with shuttle 61 and the seizure of described line the line of catching wire loop and is turned round driving linkedly with shuttle 61 and reversing of main shaft 60 by moving with the association of described suture needle 2.Described shuttle 61 is around turning round driving with around the horizontal axis of the rotary middle spindle a quadrature of main shaft 60.
The internal structure of tortuous stitching seam sewing machine M is described below with reference to Fig. 2.Be equipped with the front in the inside of arm 1 left part and see needle bar bracket 23 that roughly is コ word shape and the described shank 3 that moves up and down that is supported on described needle bar bracket 23.
Inside in the socle portion 63 of tortuous stitching seam sewing machine M is equipped with the swing mechanism 33 that can swing described needle bar bracket 23.Described swing mechanism 33 is by formations such as link component 34, drive motors 44 (being equivalent to actuator), drive rods 45.
Specifically, the internal fixation in described socle portion 63 has substrate 43.Fixing the described drive motors 44 that constitutes by stepper motor in the back of described substrate 43.The driving shaft 44a of described drive motors 44 runs through described substrate 11, protrudes to the front of described substrate 11.On described driving shaft 44a, fixing the base end part of described drive rod 45.The leading section of described drive rod 45 by pin 64 can reverse link with the top of described link component 34.
Fulcrum in described link component 34 bottoms is formed with bifilar 34a.The part corresponding with bifilar 34a in described substrate 43 supporting the eccentric shaft member 36 that reverses freely.Described eccentric shaft member 36 has eccentric shaft 36a forwards that protrude, that engage with described bifilar 34a.
Described needle bar bracket 23 and described swing mechanism 33 link by connecting rod 27 and the horizontal axle 24 that is equipped in the arm 1.
But described axle 24 left and right directions are bearing on the bearing 25 that is fixed in the arm 1 sliding freely.Coupling member 26 is being fixed in right part at described axle 24.On described coupling member 26, reverse freely the left part supporting of connecting rod 27 by pin 28.The right part of connecting rod 27 is supported on the upper end of the link component 34 of swing mechanism 33 by reverse pivot freely of pin 35.
Needle bar swinging mechanism 65 is made of swing mechanism 33, needle bar bracket 23, axle 24, connecting rod 27 etc.Except above-mentioned, be equipped with up and down driving mechanism (not shown) etc. of shank that the turning power of utilizing described main shaft 60 can drive shank 3 up and down in the inside of described arm 1.
Adopt said structure, in case drive motors 44 drives with the counter clockwise direction reciprocating rotating along clockwise direction, then swing along left and right directions the upper end of drive rod 45, and meanwhile, link component 34 is center left and right directions swing with this fulcrum.During the swing of link component 34 left and right directions, needle bar bracket 23 carries out the left and right directions reciprocally swinging by connecting rod 27, and shank 3 carries out reciprocally swinging shown in double dot dash line.
The result catches with shuttle 61 by described wire loop to move with the association of suture needle 2, forms the stitching of tortuous style (zigzag style) on processing cloth.
Fig. 3 represents the electric property structure chart of the tortuous stitching seam sewing machine M of present embodiment, CPU52 with aforesaid guidance panel 6 with RAM56 is connected with ROM58 when drive motors 44 is connected.
RAM56 has the stitching table of depositing the tortuous stitch pattern position data shown in Fig. 4 A.Required numerical value when CPU52 will carry out various control action, or from described RAM56, read or write among the RAM56.In addition, Fig. 4 B represents the example according to the stitching shape of the formation of the position data shown in Fig. 4 A.
In ROM58, deposit carry out described later make that operation uses make handling procedure etc.
CPU52 is with when electrical motor of sewing machine 53 is connected, with the encoder 54 that is detected usefulness by the rotational phase (upper-lower position of suture needle 2) of electrical motor of sewing machine 53 rotating main shafts 60.
The action of the tortuous stitching seam sewing machine M of said structure is described below with reference to Fig. 5 and Fig. 6.Fig. 5 makes the flow chart of action for the tortuous stitching seam sewing machine M of expression, Fig. 6 for the expression line catch the curve movement C2 of curve movement C1 with shuttle 61, rotary thread take-up tension lever 9, with respect to the figure of the motion track C3 of the suture needle 2 of (among Fig. 6, represent) above the needle plate with straight line L.The transverse axis of Fig. 6 is represented the angle of revolution of the main shaft 60 of Sewing machines M, and the longitudinal axis is represented the line amount of colluding of the reach the standard grade sendout and the shuttle 61 of rotary thread take-up tension lever 9.
As shown in Figure 6, when the angle of revolution of main shaft 60 is 0 when spending, suture needle 2 is positioned at goes up point (shank top dead-centre) most, and when the angle of revolution of main shaft 60 is 180 when spending, suture needle 2 is positioned at descends point (shank bottom dead centre) most.High interval, top position on suture needle 2 is positioned at than needle plate, that is, the angle of revolution of main shaft 60 becomes the swung interval of suture needle 2 to the intervals of 120 degree from 240 degree.
When operation was made in enforcement, the operator is operating operation panel 6 at first, set the length of delay of the mobile timing of suture needle 2.The length of delay of setting is remembered in RAM56.Therefore, in the present embodiment, guidance panel 6 has the function as the length of delay setting device.
So-called move length of delay regularly be meant with respect to suture needle 2 move to from right position left position (left pin swing) timing, make suture needle 2 move to the retardation of the timing of right position (right pin swing) from left position, here, set as " 90 degree " length of delay with the angle of revolution of main shaft 60.
Because of the swung interval (with reference to Fig. 6) of suture needle 2 is determined, so length of delay is restricted, the timing terminal point of right pin swing can not surpass 120 degree of main shaft 60 angles of revolution.
Secondly, the operator selects required tortuous stitch pattern by operating surface arc 6.Then, when the operator stepped on not shown pedal, tortuous stitching seam sewing machine M made action according to the flow performing of Fig. 5.
At first, in step SP1 (hereinafter referred to as SP1, other step too), the position data of CPU52 sense data tagmeme 1 from ROM58 (right position A shown in Figure 4) is controlled drive motors 44, makes shank 3 move to right position A.The action that makes shank 3 move to the position data of data tagmeme 1 also can be carried out when above-mentioned tortuous stitch pattern is selected.
In SP2, CPU52 makes data tagmeme increment 1, and whether the position data of reading this data tagmeme in SP3, holds sign indicating number to judge to this position data.For example, in SP2, when the position data (left position B shown in Figure 4) of sense data tagmeme 2, because of not being end sign indicating number (SP3:NO), so directly travel to SP4.But, when in SP2, having read the position data of data tagmeme 3, then because of being end sign indicating number (SP3:YES), so, travel to SP4 in the position data (right position A) (SP5) afterwards of sense data tagmeme 1.
In SP4, CPU52 calculates the amount of movement (comprising moving direction) of shank 3 according to the position data of reading and position at that time.Then, in following 1 SP6, whether right judges CPU52 to the moving direction of shank 3, if left to (NO), then travels to SP7, if right (YES) then travels to SP10.
For example, the position data of reading is left position " B ", position at that time is right position " A ", the moving direction of the shank 3 of this moment becomes left to (SP6:NO), and when position data be right position " A ", at that time position when being left position " B ", then the moving direction of shank 3 becomes right (SP6:YES).
In SP7, length of delay places " 0 ", and in SP10, length of delay places the length of delay of having set " 90 degree ".
In SP8, CPU52 carries out verification to the signal from encoder 54, and standby in basic action regularly is until the time point behind the length of delay that adds.Basic action in the present embodiment regularly is meant the time point that the angle of revolution 30 of main shaft 60 begins to move when spending (among Fig. 6, represent with A).Basic action regularly becomes proper states according to the oscillating quantity of shank 3 and the automatic settings such as speed of electrical motor of sewing machine 53.
In SP8, in case elemental motion regularly arrives the time point (YES) behind the length of delay that adds, then CPU52 controls drive motors 44, the moving of beginning shank 3.
Specifically, when the moving direction of shank 3 are lefts to the time, because of length of delay is " 0 ", thus shank 3 basic action regularly (300 degree) locate to begin to move.That is, shank 3 represents that in Fig. 6 the time point of " left pin swing is interval " moves.
When the moving direction of shank 3 is right, because of length of delay is " 90 degree ", so the time point (timings of 30 degree) shank 3 adds 90 degree in basic action timing (300 degree) after begins to move.That is, shank 3 represents that in Fig. 6 the time point of " right pin swing is interval " moves.
CPU52 adds the length of delay of setting among the SP10 in basic action regularly after, when ending the angle of revolution " 120 degree " that regularly exceeds main shaft, swing reduces length of delay, so that the angle of revolution " 120 degree " that the swing of shank 3 ends and regularly is no more than main shaft.
From above-mentioned explanation as can be seen, in the tortuous stitching seam sewing machine M of present embodiment, because a side of the timing that shank 3 moves from left to right is than the constant time lag that moves from right to left, therefore, irrelevant with the moving direction of shank 3, can form harmonious good tortuous style stitching.
In the present embodiment, as shown in Figure 6, promptly reach the standard grade from 330 degree to the intervals of 30 degree and 10 pass through and break away from behind the shuttle by the interval before being drawn in the angle of revolution of having avoided main shaft 60, and shank 3 moves to the right from the left side, away from rotary thread take-up tension lever 9.Therefore, reaching the standard grade 10 can not be subjected to excessive resistance, can prevent the generation of breaking.
And promptly reach the standard grade and 10 pass through the interval that breaks away from behind the shuttle in the later interval of degree, angle of revolution 30 of having avoided main shaft 60, and shank 3 moves to the left from the right side, close to rotary thread take-up tension lever 9.Therefore, 10 the surplus of reaching the standard grade can be not too much, can prevent that the elasticity of stitching from worsening.
The present invention is not limited to the foregoing description, can do various distortion and improvement.
For example, the foregoing description is to make the structure of the mobile beginning constant time lag of suture needle 2 according to length of delay, but also can make the swing end of a period constant time lag of suture needle 2.
Again, the foregoing description is the structure of length of delay that adds in elemental motion regularly, but also can adopt from elemental motion regularly the structure that cuts institute's definite value, action is regularly done sth. in advance.
And the foregoing description is the angle of revolution mode input delay value with main shaft, comes input time but also can adopt timer to wait, but perhaps also preset delay value.
Though the foregoing description is to be controlled to the swing constant time lag of right pin swing with respect to left pin swing, also can be controlled to the swing constant time lag of left pin swing as required with respect to right pin swing again.
Rotary hook drive device also can have the motor special with the electrical motor of sewing machine split, independently line is caught with main shaft and turns round driving with shuttle.
Claims (6)
1. a tortuous stitching seam sewing machine has the bottom and the shank that can adorn the modus ponens suture needle is installed and makes the described shank edge and the direction of processing cloth conveyance direction quadrature move back and forth the needle bar swinging mechanism of usefulness, it is characterized in that,
Described needle bar swinging mechanism comprises:
The actuator that described shank is moved back and forth; And
By controlling described actuator, making the different control device of mobile timing of described shank corresponding to the moving direction of described shank.
2. tortuous stitching seam sewing machine as claimed in claim 1 is characterized in that,
Thread take-up tension lever with the side's side that moves back and forth direction that is equipped on described shank,
Described control device is controlled described actuator, makes the mobile constant time lag of described shank from the described shank of mobile timing ratio of side's side direction the opposing party side from the opposing party's side direction one side's side.
3. tortuous stitching seam sewing machine as claimed in claim 2 is characterized in that,
Have with described suture needle and assist line seizure shuttle moving and that seizure is reached the standard grade,
Described control device with described actuator be controlled to by described line catch with shuttle catch described reach the standard grade to avoid catching from described line pass through to the interval of being drawn, make described shank with shuttle from side's side direction the opposing party side shifting by described thread take-up tension lever, simultaneously described actuator is controlled to and is caught described the reaching the standard grade of catching by described line and avoid by the interval after drawing on the described thread take-up tension lever, make described shank from the opposing party's side direction one side's side shifting with shuttle.
4. tortuous stitching seam sewing machine as claimed in claim 2 is characterized in that,
Described control device is controlled to the constant time lag that described shank begins from the opposing party's side direction one side's side shifting since the described shank of timing ratio of side's side direction the opposing party side shifting with described actuator.
5. tortuous stitching seam sewing machine as claimed in claim 2 is characterized in that,
Be equipped with the length of delay setting device that described shank is set from the retardation of the timing of the opposing party's side direction one side's side shifting from the described shank of timing ratio of side's side direction the opposing party side shifting.
6. tortuous stitching seam sewing machine as claimed in claim 5 is characterized in that,
Have electrical motor of sewing machine, turned round the main shaft of driving and assisted line seizure shuttle moving and that seizure is reached the standard grade with described suture needle by described electrical motor of sewing machine, described line is caught and is turned round driving linkedly with shuttle and described main shaft,
Described retardation setting device is set at length of delay the value of angle of revolution from 30 degree to 120 degree of described main shaft.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002264986A JP3864877B2 (en) | 2002-09-11 | 2002-09-11 | Staggered sewing machine |
| JP2002264986 | 2002-09-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1493727A CN1493727A (en) | 2004-05-05 |
| CN100513664C true CN100513664C (en) | 2009-07-15 |
Family
ID=32264244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031593704A Expired - Fee Related CN100513664C (en) | 2002-09-11 | 2003-09-10 | Catch-stitch sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3864877B2 (en) |
| CN (1) | CN100513664C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106757816A (en) * | 2015-11-23 | 2017-05-31 | 北京大豪科技股份有限公司 | The method for adding shape information |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535024A (en) * | 2011-12-23 | 2012-07-04 | 达利(中国)有限公司 | Method for stitching triangle thread on thin type fabric |
| JP6556997B2 (en) * | 2014-10-29 | 2019-08-07 | 蛇の目ミシン工業株式会社 | Sewing machine and method for controlling sewing machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2762659B2 (en) * | 1990-03-09 | 1998-06-04 | ブラザー工業株式会社 | Zigzag sewing machine |
-
2002
- 2002-09-11 JP JP2002264986A patent/JP3864877B2/en not_active Expired - Fee Related
-
2003
- 2003-09-10 CN CNB031593704A patent/CN100513664C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2762659B2 (en) * | 1990-03-09 | 1998-06-04 | ブラザー工業株式会社 | Zigzag sewing machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106757816A (en) * | 2015-11-23 | 2017-05-31 | 北京大豪科技股份有限公司 | The method for adding shape information |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1493727A (en) | 2004-05-05 |
| JP2004097584A (en) | 2004-04-02 |
| JP3864877B2 (en) | 2007-01-10 |
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Granted publication date: 20090715 Termination date: 20170910 |