CN1237661A - Control device for sewing machine - Google Patents
Control device for sewing machine Download PDFInfo
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- CN1237661A CN1237661A CN 99107700 CN99107700A CN1237661A CN 1237661 A CN1237661 A CN 1237661A CN 99107700 CN99107700 CN 99107700 CN 99107700 A CN99107700 A CN 99107700A CN 1237661 A CN1237661 A CN 1237661A
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- moving knife
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Abstract
To eliminate a cutting failure of thread even when a throat plate is changed to one having different sized pinholes depending on a size of a needle or thread. X-Y driving devices are driven so that a thread 20 to be cut comes to a target position b at the time of the thread cutting based on a size R of a pinhole selected by a selection means 52 for selecting a size of a pinhole and the final sewing data before thread cutting.
Description
The present invention relates to the control device of Sewing machines, particularly be suitable for the control device of the Sewing machines when the cloth side of cutting off automatic sewing machine is reached the standard grade and rolled off the production line, used, this automatic sewing machine allows be used to keep the cloth casting die of sewn object and sewing machine head relatively mobile according to the data as the stitch mode of XY coordinate figure of memory storage memory.
In the automatic sewing machine shown in Fig. 1 to Fig. 4, as shown in Figure 1, data according to memory storage (omitting among the figure) memory as the stitch mode of X-Y coordinate figure, control X-Y drive unit, the sewn object that allows cloth casting die 1 and following cloth casting die 2 form thus keeps relatively moving with cloth casting die and Sewing machines head 3.The X-Y drive unit of this automatic sewing machine is installed in the X-axis pulse motor 6 and the Y-axis pulse motor 7 of sewing machine table 5 inside and forms, by this pulse motor 6,7, with respect to shank 8 drive on the X-Y direction be positioned on the operation post 4 on cloth casting die 1 and cloth casting die 2 down.
This automatic sewing machine has shuttle, and this shuttle has needle downing position, and this needle downing position is in bobbin and rolls off the production line between leading-out portion and the middle spur angle.In addition, be arranged on line cut-off machine structure such as Fig. 2, shown in Figure 4 on this automatic sewing machine, but constitute by moving knife 9 and dead knife 10, but moving knife 9 makes the 9b of backguy portion be in position of readiness to hand the place ahead, but dead knife 10 with should moving knife 9 cooperate and the cut-out of reaching the standard grade and roll off the production line of cloth side.
But aforementioned moving knife 9 has the line portion of stretching tight most advanced and sophisticated 9a, the 9b of backguy portion and the line cut-out 9c of portion (front and back in the hole that is called spring eye form blade).But the rotation of axle passes to the fulcrum (not shown) among the hole 9A that is embedded in moving knife 9 base portions on the Sewing machines by several connecting rods 13, is the center reciprocating motion but make moving knife 9 thus with aforementioned fulcrum.
But aforementioned fixation cutter 10 is positioned at the upside of moving knife 9, and its most advanced and sophisticated line cuts off the place ahead slightly that blade is positioned at needle downing position.
Shuttle upper spring 11 is fixed on the upside of the shuttle 14 of shuttle, is the special line traffic control usefulness hole 12 of central part formation shape at center at the needle downing position with this sword.In Fig. 2, the 15th, allow the rotating shuttle axle of shuttle, the 16th, reel case, 16a are the feelers (horn) that stops reel case to rotate.
Fig. 3 shows the relation of needle point each signal of when action of this automatic sewing machine.1. among Fig. 3 is the curve of expression needle point action, has to be roughly sinusoidal wave track, the position of top dead center when last shaft angle degree is zero.2. expression is the position of needle plate.3. expression is between X-Y work feed active region.Be equipped with on the axle on the Sewing machines can send shaft angle degree in the expression be 50 degree on position signalling the upper position sensor (not shown) and can send that the shaft angle degree is the upper/lower positions sensor (not shown) of the upper/lower positions signals of 135 degree in the expression, central processing unit (CPU) (not shown) makes pin rise from needle plate according to the driving of the signal controlling X-Y work feed of these sensors.
Automatic sewing machine in the past like this utilizes the line cut-off machine structure to cut off the cloth side according to mode shown in Figure 4 and reaches the standard grade and roll off the production line.
That is to say, but moving knife 9 is from the holding state shown in Fig. 4 (1), according to the mode reciprocating motion shown in Fig. 4 (2), Fig. 4 (3), but reciprocating motion by moving knife 9, but the most advanced and sophisticated 9a of the line portion of stretching tight that makes moving knife 9 enter roll off the production line 24 and the cloth side reach the standard grade between 22, further enter in 22 the circle of reaching the standard grade the line that stretches tight action.Reaching the standard grade 22 is introduced in the shuttle fully, and shown in Fig. 4 (4), but the most advanced and sophisticated 9a of the line portion of stretching tight of moving knife 9 enters in 22 the circle of reaching the standard grade reliably.Then, shown in Fig. 4 (5), but moving knife 9 advances to the forefront, but be connected with the cloth that is stretching tight side reach the standard grade 22 with roll off the production line the 24 line portion of the stretching tight peripheries of crossing moving knife 9, enter the 9b of backguy portion.Afterwards, shown in Fig. 4 (6), but moving knife 9 beginning reciprocating motions, the 9b of backguy portion catches hold of in turn and is connected reaching the standard grade 22, rolling off the production line 24 of side with cloth, when reaching the standard grade 22 when upwards being pulled, shown in Fig. 4 (7), 22 reel and maintain by moving knife 9 but reach the standard grade by the suspended wall (not shown).So, roll off the production line 24 but pull out, and extract needed amount with moving knife 9.At this moment, 24 excessive velocities that are drawn out that roll off the production line, bobbin can rotate (idle running) excessively, and then, but the reciprocating motion speed of control moving knife 9 can be seriously influenced not making of beginning subsequently.At last, shown in Fig. 4 (8), but by moving knife 9 further reciprocating motions, when line cut off blade 9c and cooperates with dead knife 10, cut-out cloth side was reached the standard grade 22, is rolled off the production line 24.
In above-mentioned automatic sewing machine in the past, pin moves up and down at the center O place of the pin hole 17 of needle plate, reach the standard grade 22 in order to catch hold of with the most advanced and sophisticated 9a of the line portion of stretching tight, but the motion track A of the blade 9c of moving knife 9 is on the right side at aforementioned center 0, like this, can cause that following problems takes place.That is to say, before line cuts off the direction of work feed be from Fig. 5 the right when carry out on the left side, by this work feed action, as the line 20 that cuts off object (cloth side reach the standard grade 22, roll off the production line 24) but near the lateral direction (left side of Fig. 5) of the motion track A of the blade 9c of moving knife 9, the line 20 of the cut-out object of dragging by the 9b of backguy portion shown in Fig. 5 dotted line, but break away from the center of the blade 9c of moving knife 9.
In order to address the above problem, the inventor has proposed the technical scheme of the so-called empty work feed of following when of the present invention (apply for also unexposed) of having applied in the Japan special permission Room, that is to say, after finally the handling the needle before the line that forms needle tracking cuts off, as shown in Figure 6, drive X-Y drive unit (omitting among the figure), only carry and do not form the cloth of needle tracking, but allow the center O of carrying out the pin hole 17 of the needle plate of line when cutting off with respect to moving knife 9 as the line 20 that cuts off object be on the motion track A of the 9c of movable cutting edge portion near.
Specifically, in Fig. 3,6. be to be that the line of upper/lower positions when becoming 0N of 135 degree cuts off cam signal at last shaft angle degree.When 6. this line cut-out cam signal is in ON, but moving knife 9 begins action.When last shaft angle degree is about 300 when spending, but the toe-in bundle that stretches tight of moving knife 9 is 50 a series of releases when spending at last shaft angle degree.But, carrying out line when cutting off, the speed of axle reduces speed now before the severals pins that stop on the Sewing machines, and in the time when 6. the cut-out cam signal is in ON, the rotary speed of Sewing machines is about 200rpm.Therefore, but the last shaft angle degree behind final work feed is the lines of 135 degree cut off the last shaft angle degree that begins when 6. cam signals are in ON to the toe-in bundle that stretches tight of moving knife 9 after be 300 spend 165 spend institute's elapsed times and be about 140 milliseconds (ms).
At this moment, CPU detect the shaft angle degree be 135 the degree the upper/lower positions signals 5., online cut-out cam signal is provided with the timing of synchronization action during 6. for ON, after this regularly passes through the stipulated time (about 140ms), sewn object is kept carrying out X-Y with pressing cloth piece (go up pressing cloth piece 1 and reach pressing cloth piece 2 down) drive relatively, realize empty work feed.This sky send and makes as the line 20 that cuts off object with respect to the center O (coordinate center) of pin hole 17 and near the motion track A side (the 4th quadrant side) of the 9c of movable cutting edge portion.
Send in the process at this sky, the cloth feeding direction of pressing cloth piece 2 and cloth feed amount were by needle gage data or the compress relative driving data calculation and definite of CPU according to final pin under last pressing cloth piece 1 reached.That is to say, the relative driving vector a of compress of the final pin of determining according to stitch data among Fig. 7 shown in a, b, the c of band arrow, send vector C and pin hole 17 apart from vector b, the sky of the best line cut-out point of pin hole center O the relation of radius R shown in Fig. 7 (1) like that, when final pin needle gage is pin hole radius R when following, perform calculations according to following formula:
c= b- a…………………(1)
Shown in Fig. 7 (2), when final pin needle gage is pin hole radius R when above, perform calculations according to following formula again:
c= b- a×(R/| a|)……(2)
By such calculation, cut off the line 20 of object goes up near aforementioned motion track A or near close its best line cut-out point b owing to conduct, the line that cuts off is positioned at roughly along the position of the line of this b and blade 9c, desirable words, can be roughly along these 2 b, the position of the most following some 9b ' line (Fig. 6) of 9c and the 9b of backguy portion, and can not resemble in the past the technology away from blade 9c, when blade 9c cooperates with dead knife 10, be positioned near the center of blade 9c as the line that cuts off object, thereby, can carry out the cut-out of line reliably, and, because thread path approaches the straight line on the plane, so it is shorter to remain in the amount of the line inside the cloth.
But, occasion at line that changes to different rugosity or pin, the different needle plate of radius R that needs change pin hole 17, but must adjust moving knife to change aforementioned motion track A thereupon, but, in said method, because the input of the vector b of the radius R of pin hole 17 or best line cut-out point is fixed, the sky amount of sending is certain, therefore can not empty work feed, can not make as the line that cuts off object and move to that aforementioned motion track A goes up or near it best line cut-out point,, exist the bad problem of cutting off in the many occasions of the size variation of pin hole etc.
The present invention proposes in order to solve the existing problem of above-mentioned conventional art, its objective is provides a kind of line that can make according to the rugosity of the size of pin hole or line to move with respect to suitable, best line cut-out point, so that cut off the control device of the Sewing machines of line reliably.
In order to finish above-mentioned purpose, the control device of Sewing machines of the present invention comprises: the memory storage that is used to remember the needle gage data; Needle gage data according to this memory storage memory are used in pressing cloth piece that keeps sewn object and the X-Y drive unit that the Sewing machines head relatively moves; But line cut-off machine structure with dead knife and moving knife, above-mentioned movable tool has the blade that cooperates with dead knife, and moves on the regulation motion track, but moving knife is caught hold of the line that passes the needle plate pin hole when moving, afterwards, by the cooperate cut-out of carrying out line of dead knife with aforementioned blade; And the tangent line control device that is used to drive aforementioned X-Y drive unit, but this tangent line control device at the blade of above-mentioned moving knife with before dead knife cooperates, but allow as the side of the line that cuts off object near the blade motion track of above-mentioned moving knife, it is characterized in that, also comprise selecting arrangement and setting device, this selecting arrangement from the size of aforementioned pin hole or at least one several relevant information near the ad-hoc location of aforementioned blade motion track select, above-mentioned setting device is set the drive amount of aforementioned X-Y drive unit according to the aperture size of this selecting arrangement selection or the final needle gage data before specific location information and the line cut-out.
Aforementioned setting device according to making as the mode of the line that cuts off object near the position of the motion track of blade central part, is set the drive amount of aforementioned X-Y drive unit.
Fig. 1 is the integrally-built perspective view of automatic sewing machine in the past.
Fig. 2 is the perspective view after representing the formation of line cut-off machine structure in the past and cutting a part.
Fig. 3 is a time plot of representing the relation of the pinpoint movement of automatic sewing machine in the past and each signal.
Fig. 4 is used to illustrate that the line of line cut-off machine structure in the past cuts off the perspective view of action.
Fig. 5 is as the plane of the relation of the motion track of line that cuts off object and movable cutting edge portion when representing that in the past line cuts off.
Fig. 6 is the key diagram that is used for illustrating the action of the inventor when the automatic sewing machine of the relevant technologies of first to file carries out the line cut-out.
Fig. 7 is used to illustrate that sky when the line relevant with the present invention cuts off send the plane of data.
Fig. 8 is the whole block diagram that constitutes of control device that is used to represent the embodiment of the invention.
Fig. 9 is the chart of an example that is used for representing the vector correlation of selected pin hole radius of the employed dual in line switch of the embodiment of the invention and best line cut-out point.
Hereinafter with reference to the description of drawings embodiments of the invention.
Fig. 8 illustrates the control device of present embodiment.The EPROM (read-only storage of erasable programmable) 36 that is connected with the CPU30 that controls, the read-only storage (ROM) 32 that is used for memory system program etc., random-access memory (ram) 34 that operation is used on this control device and is used to remember the writeable non-volatile ROM of user of stitch mode data.
In addition, on aforementioned CPU30, be connected with the electrical motor of sewing machine driver that is used to drive electrical motor of sewing machine 18 by electrical motor of sewing machine interface (I/F) 40, also be connected with the pulse motor driver 46 that is used to drive X-axis pulse motor 6 and Y-axis pulse motor 7 by pulse motor interface (I/F) 44.In addition, on aforementioned CPU30, be connected with the dual in line switch (DIP switch) 52 of selecting the pin hole radius according to the present invention by input interface (I/F) 50.
According to two switch DIPSW1 that constitute aforementioned dual in line switch 52 and the ON of DIPSW2 or the setting of OFF state, can select the pin hole radius R and apart from the vector b of the best line cut-out point of pin hole center O according to mode for example shown in Figure 9.In Fig. 9, the unit of the vector b of best line cut-out point is mm.
Other formations and elemental motion are with identical referring to figs. 1 through the previous example of Fig. 7 narration, and it illustrates omission.
The below distinctive action of explanation the present invention.
When making,,, select the combination of pin hole radius R and best line cut-out point b by aforementioned dual in line switch 52 according to sewing condition.So, by aforementioned CPU30, utilize selected R and b, carry out the calculation of aforementioned (1) formula and (2) formula, obtain the sky amount of sending c.
Therefore, before the online cut-out, sky according to the sky amount of the sending c that is calculated based on the pin hole radius R of selecting input send, must make as the line 20 that cuts off object near best line cut-out point b (be the mobile route A of aforementioned blade 9c go up or its near), like this, when dead knife 10 cooperates with blade 9c, be positioned at the approximate centre position of blade 9c as the line 20 that cuts off object, avoided cutting off bad generation.
In embodiments of the present invention, the size of pin hole is the pin hole radius R, select the selecting arrangement of this pin hole radius R to constitute by two dual in line switch, selecting each other of the vector b of pin hole radius R and best line cut-out point, but the kind of the formation of selecting arrangement and the pin hole radius R that may select is not special to be limited.For example dual in line switch can be only with one, between two stages, switch, perhaps be used to select the dual in line switch of pin hole radius R and be used to select the dual in line switch of the vector b of best line cut-out point to separate, perhaps only change the pin hole radius R, and make the vector b of best line cut-out point constant.
Perhaps replace dual in line switch, and the rotary switch of numerical value etc. can be directly set in use, be set the X coordinate and the Y coordinate of the vector b of pin hole radius R and best line cut-out point with direct numerical value.
Perhaps, do not use the hardware switch of dual in line switch or rotary switch and so on, and the memory of EPROM and so on is connected on the CPU30,, in the write memory, select to set by panel operation.
According to the present invention, the set positions in the time of can carrying out the line cut-out to the line that cuts off object is in the only position that meets aperture size.Therefore, even when changing the different needle plate of aperture size because of the rugosity of pin or line, by selecting aperture size etc., can finish corresponding to the most suitably close sky of the line of each needle plate and send action, the bad phenomenon of having avoided line to cut off can be cut off line reliably.
Claims (2)
1, a kind of control device of Sewing machines comprises:
Be used to remember the memory storage of needle gage data;
Needle gage data according to this memory storage memory are used in pressing cloth piece that keeps sewn object and the X-Y drive unit that the Sewing machines head relatively moves;
But line cut-off machine structure with dead knife and moving knife, above-mentioned movable tool has the blade that cooperates with dead knife, and moves on the regulation motion track, but moving knife is caught hold of the line that passes the needle plate pin hole when moving, afterwards, by the cooperate cut-out of carrying out line of dead knife with aforementioned blade;
And the tangent line control device that is used to drive aforementioned X-Y drive unit, but this tangent line control device at the blade of above-mentioned moving knife with before dead knife cooperates, but allow as the side of the line that cuts off object, it is characterized in that, also comprise near the blade motion track of above-mentioned moving knife:
From with the size of aforementioned pin hole or at least one several relevant information near the ad-hoc location of aforementioned blade motion track the selecting arrangement selected; And
Setting device, this setting device are set the drive amount of aforementioned X-Y drive unit according to the aperture size of above-mentioned selecting arrangement selection or the final needle gage data before specific location information and the line cut-out.
2, the control device of the Sewing machines of putting down in writing according to claim 1 is characterized in that, aforementioned setting device according to making as the mode of the line that cuts off object near the position of the motion track of blade central part, is set the drive amount of aforementioned X-Y drive unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14770698 | 1998-05-28 | ||
| JP147706/1998 | 1998-05-28 | ||
| JP147706/98 | 1998-05-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1237661A true CN1237661A (en) | 1999-12-08 |
| CN1110591C CN1110591C (en) | 2003-06-04 |
Family
ID=15436399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99107700 Expired - Lifetime CN1110591C (en) | 1998-05-28 | 1999-05-28 | Control device for sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN1110591C (en) |
| TW (1) | TW436550B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308523C (en) * | 2001-04-05 | 2007-04-04 | 重机公司 | Up and down cloth feeding sewing machine |
| CN1710176B (en) * | 2004-06-17 | 2010-05-05 | 兄弟工业株式会社 | Sewing machine and its control method |
| CN105937106A (en) * | 2015-03-04 | 2016-09-14 | 蛇目缝纫机工业株式会社 | Sewing machine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6636694B2 (en) * | 2014-12-07 | 2020-01-29 | 蛇の目ミシン工業株式会社 | Border pattern data creation program and sewing machine |
-
1999
- 1999-05-27 TW TW88108767A patent/TW436550B/en not_active IP Right Cessation
- 1999-05-28 CN CN 99107700 patent/CN1110591C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308523C (en) * | 2001-04-05 | 2007-04-04 | 重机公司 | Up and down cloth feeding sewing machine |
| CN1710176B (en) * | 2004-06-17 | 2010-05-05 | 兄弟工业株式会社 | Sewing machine and its control method |
| CN105937106A (en) * | 2015-03-04 | 2016-09-14 | 蛇目缝纫机工业株式会社 | Sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1110591C (en) | 2003-06-04 |
| TW436550B (en) | 2001-05-28 |
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| 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20030604 |
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| CX01 | Expiry of patent term |