CN100507125C - Thread-tension adjusting device of sewing machine - Google Patents
Thread-tension adjusting device of sewing machine Download PDFInfo
- Publication number
- CN100507125C CN100507125C CNB031042864A CN03104286A CN100507125C CN 100507125 C CN100507125 C CN 100507125C CN B031042864 A CNB031042864 A CN B031042864A CN 03104286 A CN03104286 A CN 03104286A CN 100507125 C CN100507125 C CN 100507125C
- Authority
- CN
- China
- Prior art keywords
- tension
- sewing machine
- correction value
- drive current
- value
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
Thread adjusting device improves stability and reproducibility in sewing quality by uniforming the texture of stitches obtained at each sewing machine. A cycle sewing machine main body 2 is controlled by a controller 8, and provided with an EEPROM 60 which stores and holds a correction value [Delta]I intrinsic to the sewing machine main body. The controller 8 calculates a level I corresponding to a thread tension value which is set in an operation panel 5, reads the correction value [Delta]I from the EEPROM 60, and allows a driving current with a level (I+[Delta]I) which is obtained by adding the correction value [Delta]I to the level I to flow in an upper thread solenoid 15. The correction value [Delta]I intrinsic to the sewing machine main body is stored and held in the EEPROM 60 of the cycle sewing machine main body 2, so that the driving current with the level (I+[Delta]I) is permitted to flow regardless of the combination of the cycle sewing machine main body 2 with the controller 8.
Description
Technical field
The present invention relates to a kind of wire tension adjustment unit that can change the Sewing machines of line tension with electrical control.
Background technology
In the past, possesses the Sewing machines that can change the wire tension adjustment unit of line tension with electrical control, for example, as open the spy 2000-No. 202183 bulletins go up disclosed, be the well-known wire tension adjustment unit that acts on the thrust on the tension disk of bestowing with solenoid.And as this solenoid, use be have from solenoidal movable part act on thrust on the tension disk, not according to the solenoid of the specific stroke section of movable part stroke, if it is certain at this moment to flow into solenoidal electric current, then the line tension that acts on the line of tension disk is different because of the thickness of line.Therefore, if control flows into solenoidal electric current, then can control tension disk in theory and act on line tension on the line.
But, on above-mentioned wire tension adjustment unit, because of in the deviation of the part of fabrication stage etc., and the surface smoothness with the line rubbing surface of the tension disk on each wire tension adjustment unit is different, or because of the solenoidal characteristic difference on each wire tension adjustment unit, or the difference of situation is installed because of the tension disk on each wire tension adjustment unit, so, even equate in the solenoidal levels of current that flows through each wire tension adjustment unit, but the tension force that in fact acts on the line is also different because of wire tension adjustment unit sometimes.
On the other hand, when the line tension of setting from the guidance panel of each Sewing machines with sample value, because it is identical from the calculating that line tension is converted into electric current with the control device of each Sewing machines, in addition, even owing on solenoid, flow through same electric current, the tension force that each wire tension adjustment unit acts on the line is also different, so just produced the problem at the non-interchangeability of setting data between each Sewing machines.Promptly, even set the line tension of identical value from guidance panel, and control device makes the electric current according to the size of this setting value flow through solenoid, also different to the tension force that line produces to each Sewing machines by wire tension adjustment unit, and the also different problem of touch sense of the stitching that forms on every Sewing machines is arranged.
For this reason, the objective of the invention is to make the touch sense of the stitching that on every Sewing machines, forms identical, and realize improving the stable and repeated of sewing quality.
Summary of the invention
For addressing the above problem, the present invention's 1 described invention, it is a kind of wire tension adjustment unit of Sewing machines, as Fig. 3, Fig. 8, Fig. 9 or shown in Figure 10, have: the tension disk that line is applied tension force (for example, upper thread with tension disk 13 or bottom line with tension disk 14), the solenoid that puts on above-mentioned tension disk with the linear thrust of the drive current of energising (for example, thread solenoid 15 or bottom line are with solenoid 16) and sewing machine body 2, can be (for example to the tension force set mechanism of above-mentioned tension disk setting tension value, guidance panel 5), it is characterized in that:
Have: keep to above-mentioned tension disk be used to revise drive current correction value the correction value maintaining body (for example, EEPROM60, switch SW 1～SWn or variable resistor 63), read above-mentioned correction value and control to above-mentioned solenoid link variablely from above-mentioned correction value maintaining body and go into drive current so that reach the control device (for example, control device 8) of the tension value of setting with the mentioned strain set mechanism according to this correction value.
The present invention's 2 described inventions are located at above-mentioned correction value maintaining body on the sewing machine body.
The present invention's 3 described inventions for example as shown in Figure 3, are on the present invention's 1 described sewing machine body, it is characterized in that: even (for example, EEPROM60) constitute above-mentioned correction value maintaining body with the storage unit that also keeps above-mentioned correction value of cutting off the electricity supply.
The present invention's 4 described inventions, as shown in Figure 8, be on the present invention's 1 described sewing machine body, it is characterized in that: (for example by the single or multiple switches that mechanically keep on-state or off-state, switch SW 1～SWn) constitutes above-mentioned correction value maintaining body, and keeps above-mentioned correction value by the on-state or the off-state of above-mentioned each switch.
The present invention's 5 described inventions, as Fig. 9 and shown in Figure 10, be on the present invention's 1 described sewing machine body, it is characterized in that: (for example by resistor, variable resistance 63) constitutes above-mentioned correction value maintaining body, and keep above-mentioned correction value by the resistance value of this resistor.
The present invention's 6 described inventions, as shown in Figure 6, be on any one described sewing machine body of 1 to 4 of the present invention, it is characterized in that: above-mentioned correction value, for corresponding to the regulation tension value (for example, standard tension force G) typical set value (for example, level Is) and poor corresponding to the setting value (for example, level (Is-Δ I1)) of the tension value of afore mentioned rules.
Any one described invention of 1 to 6 according to the present invention, be kept for correction value with the correction value maintaining body to tension disk correction drive current, and, read the control device of this correction value, control the drive current of switching on so that reach the tension value of setting with the tension force set mechanism to solenoid.Therefore, even the tension disk of every Sewing machines or solenoidal characteristic are different, but the tension force that puts on line from tension disk on any Sewing machines is also all the same usually, and can make the stitch touch feeling unanimity that forms on every Sewing machines.That is, can lower the deviation of the line tension of each Sewing machines, and improve the stable and repeated of sewing quality.
And, because the correction value maintaining body is located on the sewing machine body, even so sewing machine body and other control device combination and control, this other control device also can be read correction value from the correction value maintaining body that is combined in sewing machine body, and feeds drive current according to its correction value to the solenoid that is combined in sewing machine body.Therefore, even sewing machine body and other control device combination, also can on sewing machine body, use the tension value of setting to the line working tension.Therefore, sewing machine body has the interchangeability with all control device, and sewing machine body and control device are packed the result of dispatching from the factory respectively, be (promptly regardless of the combination of sewing machine body and control device, sewing machine body and control device as the optional commodity in market), the deviation that does not all have the line tension between each sewing machine body, as long as the setting value of tension force is identical on any sewing machine body, the touch of its stitching is sympathetic identical.
The present invention's 7 described inventions, as shown in Figure 3, it is a kind of wire tension adjustment unit of Sewing machines, have: the tension disk that line is applied tension force (for example, upper thread with tension disk 13 or bottom line with tension disk 14), the solenoid that puts on above-mentioned tension disk with the linear thrust of the drive current of energising (for example, thread solenoid 15 or bottom line are with solenoid 16) and sewing machine body 2, can be (for example to the tension force set mechanism of above-mentioned tension disk setting tension value, guidance panel 5), it is characterized in that:
Have: the driving data of the storage above-mentioned tension disk of expression and above-mentioned solenoidal intrinsic tension force and drive current relation (for example, drive current one tensile property curve) storing mechanism (EEPROM), reads above-mentioned driving data and control variablely from above-mentioned storing mechanism and lead to the control device (for example, control device 8) that above-mentioned solenoidal drive current reaches the tension value of setting with the tension force set mechanism according to this driving data.
7 described inventions according to the present invention, the driving data of expression tension disk and solenoidal intrinsic tension force and drive current relation is stored in storing mechanism and reads the control device of this driving data, and control is led to above-mentioned solenoidal drive current and is reached the tension value of setting with the tension force set mechanism.Therefore, even the tension disk of every Sewing machines or solenoidal characteristic are different, but the tension force that puts on line from tension disk on any Sewing machines is all the same usually, and can make the stitch touch feeling unanimity that forms on every Sewing machines.That is, can lower the deviation of the line tension of each Sewing machines, and improve the stable and repeated of sewing quality.
And, because maintaining body is located on the sewing machine body, so also have following action effect.Promptly, even sewing machine body and other control device combination and control, the control device that this is other also can be read driving data from the maintaining body that is combined in sewing machine body, and feeds drive current according to this driving data to the solenoid that is combined in sewing machine body.Therefore, even sewing machine body and other control device combination, also can on sewing machine body, use the tension value of setting to the line working tension.Therefore, sewing machine body has the interchangeability with all control device, and sewing machine body and control device are packed the result of dispatching from the factory respectively, be (promptly regardless of the combination of sewing machine body and control device, sewing machine body and control device as the optional commodity in market), the deviation that does not all have the line tension between each sewing machine body, as long as the setting value of tension force is identical on any sewing machine body, the touch of its stitching is sympathetic identical.
Description of drawings
Fig. 1 is the stereogram that is applicable to sewing device of the present invention.
Fig. 2 A is a upper thread of the present invention (bottom line) with tension disk and solenoidal plane.
Fig. 2 B is the upper thread (bottom line) that has omitted the clamp dish of the present invention with tension disk and solenoidal back view.
Fig. 2 C is a upper thread of the present invention (bottom line) with tension disk and solenoidal right hand view.
Fig. 3 is the calcspar that is used to represent the control system of above-mentioned sewing device.
Fig. 4 is the stroke of drive current one thread solenoid regularly and the curve map of thrust relation.
Fig. 5 is the curve map in the drive current of the thread solenoid of specific stroke section W and thrust relation.
Fig. 6 is the curve map of intrinsic drive current of above-mentioned sewing device and length tension relation.
Fig. 7 is the flow chart of the handling process of the expression control device that above-mentioned sewing device possessed.
Fig. 8 is above-mentioned sewing device and the calcspar of the control system of the control device of example in addition.
Fig. 9 is above-mentioned sewing device and the calcspar of the control system of the control device of example in addition.
Figure 10 is above-mentioned sewing device and the calcspar of the control system of the control device of example in addition.
Among the figure: 1-sewing device, 2-cycle sewing machine main body (sewing machine body), 5-guidance panel (tension force set mechanism), 8-control device, 13-upper thread tension disk (tension disk), 14-bottom line tension disk (tension disk), 15-thread solenoid (solenoid), 16-bottom line solenoid (solenoid), 22-clamp dish group, 60-EEPROM (correction value maintaining body, memory element, storing mechanism), 63-variable resistance (correction value maintaining body, resistor), SW1～SWn-switch (correction value maintaining body, switch).
The specific embodiment
Below, specifically describe with reference to accompanying drawing and to be applicable to embodiments of the invention.But scope of invention is not limited to the example of diagram.
As shown in Figure 1, sewing device 1 has: for the sewing machine body 2 that around circular or straight buttonhole, applies the circulating sewing machine of eyelet, the foot section 6,6 that erects and the Sewing machines operating desk 3 that the top board 7 on foot section be located at 6,6 is arranged are arranged, the distribution box 4 of the control device 8 (shown in Figure 3) of control sewing machine body 2 are housed, by the guidance panel 5 of operator's operation to control device 8 output function signals.
In the assembling place sewing machine body 2 is installed on the top board 7 that is assembled in the Sewing machines operating desk 3 on the foot section 6,6, and distribution box 4 is installed on the foot section 6,6.Then, the electrical system of distribution box 4 with sewing machine body 2 is connected, finishes sewing device 1 with this.
Below, describe upper thread tension disk 13 and thread solenoid 15 in detail.
Shown in Fig. 2 A, Fig. 2 B, Fig. 2 C, upper thread has with tension disk 13: possess movable clamp dish 21 and geometrical clamp drum 20 clamp dish group 22, connecting rod 23, connect connecting rod 24, connecting rod 25 etc.Geometrical clamp drum 20 is faced configuration with pedestal 26, and pedestal 26 is fixed on the chain-drive section 11.On pedestal 26 and geometrical clamp drum 20, be formed with through hole, and in the through hole of pedestal 26 and geometrical clamp drum 20, can running through axle 27 flexibly slidably.On movable clamp dish 21, also form through hole, and running through axle 27 flexibly slidably at this Kong Zhongke.In an end of axle 27, twisting the nut 33 that has flange 33a.Movable clamp dish 21 is configured between the flange 33a and geometrical clamp drum 20 of nut 33, and is configured in the face of geometrical clamp drum 20.Nut 33 is clamped in movable clamp dish 21 and geometrical clamp drum 20 between nut 33 and the pedestal 26, and movable clamp dish 21 is contacted with geometrical clamp drum 20 to be drawn towards the mode of pedestal 26.
In the other end of axle 27 pin 28 is installed.Pin 28 can slide flexibly and be connected with an end of connecting rod 23 rotationally.Connecting rod 23 is the L word shape, and its bend can be installed on the pedestal 29 flexibly rotationally.Pedestal 29 is fixed on the chain-drive section 11.The other end of connecting rod 23 can be connected with an end of connecting rod 24 flexibly rotationally.
The other end of connecting rod 24 can be connected with an end of connecting rod 25 flexibly rotationally.The pars intermedia of connecting rod 25 can be installed on the pedestal 30 flexibly rotationally.Pedestal 30 is installed on the thread solenoid 15, and is fixed on the chain-drive section 11.On the other end of connecting rod 25, connecting plunger pin 31, and plunger pin 31 can slide and rotation flexibly in the other end of connecting rod 25.Plunger pin 31 is connected with the front end of the plunger 32 of thread solenoid 15.Tighten the relation between the position of the position that can suitably adjust above-mentioned axle 27 and plunger 32 with nut 33.
Above-mentioned upper thread tension disk 13 according to above formation, in sewing by sewing machine body 2, in case to the thread solenoid 15 logical drive currents of going up, then thread solenoid 15 just produces thrust (promptly, power to traction plunger 32 directions), and this thrust by connecting rod 25, connect connecting rod 24 and sell 28 and act on axle 27, and movable clamp dish 21 is produced to the power of geometrical clamp drum 20 near directions.Therefore, pushing force acts on the upper thread that is clamped on movable clamp dish 21 and the geometrical clamp drum 20 and produces tension force.So, so that the method that the thrust of thread solenoid 15 changes, change from upper thread and act on the pressure of upper thread with tension disk 13, upper thread tension force is also changed.That is, upper thread is with tension disk 13, and can carry out what is called that the thrust with thread solenoid 15 changes pressure continuously can dynamic tension.
Describe the characteristic of thread solenoid 15 here in detail with reference to Fig. 4, Fig. 5.Abscissa is represented the stroke of plunger 32 among Fig. 4, and ordinate is represented the thrust of plunger 32.Abscissa is represented the electrical current of thread solenoid 15 among Fig. 5, and ordinate is represented the thrust of plunger 32.
Thrust has the specific stroke section W with the irrelevant almost stable of the stroke of plunger 32.If the minor variations amount that the thrust that the stroke of plunger 32 is S, establish plunger 32 is F, establish the electric current that flows through thread solenoid 15 is I, establish stroke is that the minor variations amount of Δ S, thrust is Δ F, then specific stroke section W when I be one regularly
Only utilize thread solenoid 15 at specific stroke section W.That is, setting nut 33 tightens the position so that the stroke section of the plunger 32 that can act on clamp dish group 22 states is included in the specific stroke section W.This so-called plunger 32 can act on clamp dish group 22 states, be meant from not clamping state that upper thread and movable clamp dish 21 and geometrical clamp drum 20 fully be abutted against between movable clamp dish 21 and the geometrical clamp drum 20 to the state that movable clamp dish 21 and geometrical clamp drum 20, clamps upper thread.
The travel settings of the plunger 32 when acting on clamp dish group 22 for handle is in specific stroke section W, for example, under the state that unclamps nut 33, measure the protrusion amount L of the rear end 32a of plunger 32 from the rear end 15a of thread solenoid 15 bodies, and adjust the position of tightening of nut 33, make movable clamp dish 21 and geometrical clamp drum 20 maintain between nut 33 and the pedestal 30 state that clamps, protrusion amount L (shown in Fig. 2 A, Fig. 2 B, Fig. 2 C) is adjusted to position corresponding to specific stroke section W from " Z " value of Fig. 4.
As shown in Figure 5, the electric current that flows through thread solenoid 15 is a linear relationship for the relation with thrust, along with the increase thrust of drive current also becomes big.Particularly, the level of drive current is in interval U the time, the proportional relation of thrust and drive current.In the present embodiment, in interval U, utilize thread solenoid 15.
Then, act on the thrust of plunger 32, be converted into the pressure that acts on upper thread with tension disk 13 by upper thread, and because thrust and the proportional relation of pressure, so the long power and the thrust that act on the upper thread are proportionate relationship.Therefore, along with the increase of the drive current that flows through thread solenoid 15, the tension force that acts on upper thread also becomes big.That is, in the present embodiment, only can change the tension force that acts on upper thread by the level that changes drive current.The variation of drive current level is by control device 8 controls.
In addition, bottom line is with tension disk 14, except being set at board portion 9, have and upper thread with tension disk 13 structure much at one, except bottom line is located at the board portion 9 with solenoid 16, have almost same structure of thread solenoid 15 and characteristic.
Below, describe control device 8 in detail.
As shown in Figure 3, control device 8 substantially is made of CPU50, RAM51, ROM52, D/ A converter 53,54 and calculation processing apparatus with the system busbar that is connected with these.
In ROM52, stored and be used to control Sewing machines and sew control program that moves and the control data that uses this control program.CPU50 calculates as the working region RAM51 according to the control program that is stored among the ROM52, and carries out various calculating according to the signal from guidance panel 5 and firing switch 61 outputs.CPU50 can export the no illustrated various signals corresponding to result of calculation.That is, control device 8 can be controlled according to the calculating of CPU50, and circulating sewing machine carries out at buttonhole eyelet on every side with this.
And control device 8 also has the thread solenoid driver that is used to drive thread solenoid 15 that is made of operational amplifier 55 grades, and is used to drive the bottom line solenoid driver of bottom line with solenoid 16 by what operational amplifier 57 etc. constituted.
D/A converter 53 is connected on the in-phase input terminal of operational amplifier 55, and by socket 59 coil of thread solenoid 15 is connected on the lead-out terminal of operational amplifier 55.In D/A converter 53, the electric current designated value as data signal from CPU50 output is converted to the analogue value, and makes drive current flow through thread solenoid 15 according to the current instruction value level.And, detect the level of the drive current that flows through thread solenoid 15 with current sense resistor 56, and the level feed-back of drive current to the reversed input terminal of operational amplifier 55, even the coil resistance of thread solenoid 15 is unusual, also can make drive current flow through thread solenoid 15 according to the level of normal current command value.
D/A converter 54, operational amplifier 57, current sense resistor 58 and bottom line are with the function of solenoid 16, and be also the same with D/A converter 53, operational amplifier 55, current sense resistor 56 and thread solenoid 15 respectively.And socket 59 is devices that the electrical system of distribution box 4 is connected with the electrical system of sewing machine body 2.
In addition, in control data, comprised the tension data that upper thread or bottom line is applied the tension force that varies in size because of the difference in stitching place.For example, in control data, comprise with relevant when reinforcing the making of seam portion upper thread or bottom line are applied the reinforcing seam portion line tension data of tension force, and, comprise and the relevant latasuture portion line tension data that upper thread or bottom line applied tension force when the making of latasuture portion.At this moment, sewing machine body 2 is when reinforcing the making of seam portion, CPU50 sets and the level of reinforcing the proportional electric current of seam portion's line tension data, and this is set level as current instruction value, export to operational amplifier 55 exclusive disjunction amplifiers 57 by D/A converter 53 or D/A converter 54, flow into the drive current of setting level to thread solenoid 15 or bottom line with solenoid 16 with this.Then, when sewing machine body 2 is transferred to making of latasuture portion, the level of CPU50 change setting and the proportional electric current of latasuture portion line tension data, and this is set level as current instruction value, to 57 outputs of operational amplifier 55 exclusive disjunction amplifiers, make the drive current of the setting level that has changed flow into thread solenoid 15 or bottom line with solenoid 16 by D/A converter 53 or D/A converter 54 with this.
In addition, CPU50 can flow through thread solenoid 15 or the bottom line level with the drive current of solenoid 16 according to the signal sets of guidance panel 5.Promptly, at operator's operating operation panel 5 and when having imported tension force, CPU50 sets the level with the proportional electric current of tension force that is transfused to, and this is set level as current instruction value, export to operational amplifier 55 exclusive disjunction amplifiers 57 by D/A converter 53 or D/A converter 54, make the drive current of having set level flow through thread solenoid 15 or bottom line solenoid 16 with this.
In addition, when the more several sewing machine body 2 that as above constitutes, even it is identical to flow through the level of drive current of thread solenoid 15 on each sewing machine body, the tension force that acts on upper thread is also different because of each sewing machine body 2.Promptly, for example, drive current that flows through thread solenoid 15 and the relation that acts on the actual tension of upper thread are represented that with Fig. 6 then each cycle sewing machine main body A, B, C (basic comprising of cycle sewing machine main body A, B, C is identical with sewing machine body 2) have different characteristics.As shown in Figure 6, the drive current of cycle sewing machine main body A, C-tensile property curve α, γ is big to parallel with drive current-tensile property curve β of cycle sewing machine main body B.This is the different reason of installation situation of using tension disk 13 owing to the intrinsic upper thread of each cycle sewing machine main body.In addition, abscissa is that (level of drive current can be scaled the size of tension force according to the size of the tension force of setting from the signal and the control data of guidance panel 5 from the level of drive current for the level of the drive current set by CPU10 on Fig. 6.), ordinate is the size of the tension force of practical function on upper thread.
As mentioned above, even intrinsic drive current-tensile property curve difference at each cycle sewing machine main body, if the level of the drive current of setting is identical, then separately cycle sewing machine main body is carried out the correction of following drive current level, so that make it all flow into the drive current of same level at any platform cycle sewing machine main body.
That is, suppose in advance certain cycle sewing machine main body, and practical function on this standard cycle sewing machine body is defined as standard tension force in the regulation tension force of upper thread as the standard cycle sewing machine body.Standard tension force is the tension force that is contained in the interval U basically.Then, obtain the drive current that results from the standard tension force on this standard cycle sewing machine body or setting value (below, be called the standard motivation value.)。And, obtain the drive current that results from the standard tension force on this each cycle sewing machine main body or setting value (below, be called motivation value out of the ordinary.)。Then, the numerical value that deducts the standard motivation value from motivation value out of the ordinary is obtained as the intrinsic correction value of each cycle sewing machine main body.So in advance each cycle sewing machine main body being carried out correction value prepares.
Subsequently, in control device 8, CPU50 is according to the tension force of line tension data or the tension force of setting with guidance panel 5, level according to the bent conversion drive current of the drive current of standard cycle sewing machine body-tensile property, and, CPU50 also is added in the correction value on pre-prepd each cycle sewing machine main body on the setting level that converses, and calculates the level of new drive current with this.Because the drive current of new level flows through the thread solenoid 15 of each cycle sewing machine main body, and the tension force that equates with the tension force of setting is acted on the upper thread with tension disk 13 from the upper thread of each cycle sewing machine main body.In addition, in the ROM52 of control device 8, stored the standard driving data of the relation of the drive current of the drive current corresponding to the standard cycle sewing machine body-tensile property song as control data etc. and tension force.
For example, suppose cycle sewing machine main body B shown in Figure 6, and the practical function of decision on cycle sewing machine main body B is in the standard tension force G of upper thread as standard.Then, from the bent β of drive current-tensile property of cycle sewing machine main body B, obtain the standard drive current level I of generation standard tension force G
SFrom the bent α of drive current-tensile property of cycle sewing machine main body A, obtain the level (I of the drive current of generation standard tension force G
S-Δ I1), from the bent γ of drive current-tensile property of cycle sewing machine main body C, obtain the level (I of the drive current of generation standard tension force G
S+ Δ I2).Then on cycle sewing machine main body A, from level (I
S-Δ I1) deducts standard drive current level I
SValue (-Δ I1) prepare on cycle sewing machine main body A as correction value, and on cycle sewing machine main body C, from level (I
S+ Δ I2) deducts standard drive current level I
SValue Δ I2 prepare on cycle sewing machine main body C as correction value.
In the control device 8 of Control Circulation sewing machine body A, CPU50 is according to the tension force of line tension data or be scaled the setting level I of drive current with the tension force that guidance panel 5 is set, and CPU50 adds the correction value of preparing in advance on cycle sewing machine main body A (-Δ I1) on the setting level I that converses, thereby calculates the level (I-Δ I1) of new drive current.CPU50 exports as current instruction value level (I-Δ I1) to operational amplifier 55, make the drive current of level (I-Δ I1) flow through thread solenoid 15 with this.In the control device 8 of Control Circulation sewing machine body C too, CPU50 is scaled the setting level I of drive current according to the tension force that sets, and CPU50 adds the correction value Δ I2 for preparing in advance in cycle sewing machine main body C on the setting level I that converses, thereby calculate the level (I+ Δ I2) of new drive current, and make the drive current of level (I+ Δ I2) flow through thread solenoid 15.Therefore, correction value (-Δ I1) is to be used to revise corresponding to being located at upper thread on the cycle sewing machine main body A with the data of the drive current of tension disk 13, and be cycle sewing machine main body A upper thread with tension disk 13 intrinsic data.Equally, correction value Δ I2 be cycle sewing machine main body C upper thread with tension disk 13 intrinsic data.
But as mentioned above, sewing machine body 2 and control device 8 are made respectively, and be moved to be provided with the place later on again the assembling.At this moment, owing on each sewing machine body 2, prepared the correction value Δ I of drive current in advance, so correction value Δ I must have corresponding to 2 of each sewing machine bodies.In the present embodiment, as shown in Figure 3, on sewing machine body, be provided with EEPROM (electrica1ly Erasable Programmable ROM: Electrically Erasable Read Only Memory) 60, and, pre-prepd correction value Δ I is stored among the EEPROM60 as the intrinsic information of sewing machine body 2.According to the example of Fig. 6, Δ I1 is stored among the EEPROM60 of cycle sewing machine main body A, and Δ I2 is stored among the EEPROM60 of cycle sewing machine main body C, and is stored in zero among the EEPROM60 of cycle sewing machine main body B as correction value Δ I.And, because EEPROM60 is the memory element of volatibility not, so even correction value Δ I also can be stored among the EEPROM60 behind the dump.
When distribution box 4 was connected with the electrical system of sewing machine body 2, EEPROM60 just was connected with CPU50 by socket 59 and system busbar.Thereby CPU50 reads and stores the correction value Δ I that remains among the EEPROM60, and calculates the level (I+ Δ I) of the drive current that makes new advances according to correction value Δ I, and can make the drive current of level (I+ Δ I) flow through thread solenoid 15.In addition, in EEPROM60, additionally store the correction value that is keeping bottom line to use solenoid 16 with the correction value Δ I of thread solenoid 15, and the same with the situation of thread solenoid 15, can calculate the level of bottom line by CPU50 with the new drive current of solenoid 16.
As previously discussed, the EEPROM60 that store to keep the intrinsic correction value Δ I of sewing machine body 2 is located on the sewing machine body 2, and control device 8 reads correction value Δ I, calculate the level (I+ Δ I) of the drive current that makes new advances.Thereby, with the upper thread that is suitable for being located at sewing machine body 2 with tension disk 13 or bottom line drive current with the intrinsic level (I+ Δ I) of tension disk 14, flow through thread solenoid 15 or bottom line with solenoid 16, so act on upper thread or the bottom line by the tension force of the thread tension value of guidance panel 5 or line tension data setting.
In addition, in being located at the EEPROM60 of each cycle sewing machine main body, store when keeping correction value, because being provided with correction value in control device 8 writes pattern, and be provided with when having selected this correction value to write pattern, the switch of the regulation of operating operation panel 5 etc. and can be stored in the mechanism that writes among the EEPROM60 to data, institute is so that it becomes possibility.Promptly, control device 8 is set at the above-mentioned correction value pattern that writes, and the upper thread of measuring each cycle sewing machine main body is used the tension force of tension disk 14 with tension disk 13 or bottom line, increase and decrease drive current simultaneously by control device 8 outputs, when the tension force that produces with tension disk 14 with tension disk 13 or bottom line from upper thread reaches standard tension force, can operate the above-mentioned mechanism that writes, and the difference of the level of at this moment drive current and above-mentioned standard motivation value (the standard cycle sewing machine body produces the level of the drive current of standard tension force) is stored among the EEPROM60 with the above-mentioned mechanism that writes.Perhaps, also can have the correction value writing station of the special use of said function, and write among the EEPROM60 with control device 8 other preparations.
Below, with reference to the handling process of the flowchart text control device 8 of Fig. 7.
Usually, when sewing machine body 2 actions, owing to just must bestow the tension force of regulation during from power connection to upper thread and bottom line, so 8 pairs of thread solenoids 15 of control device and bottom line are assigned driving command with solenoid 16, and make the drive current of the level that converses from the tension force setting value of regulation flow through thread solenoid 15 and bottom line with solenoid 16 (step S1).
Then, control device 8 read be included in from the tension force setting value of the line tension data of guidance panel 5 input or make the control data of figure the line tension data (for example, reinforce seam portion's line tension data or latasuture portion line tension data) thread tension setting value (step S2), control device 8 is scaled the thread tension setting value level I (step S3) of drive current.Then, control device 8 is read and is stored the correction value Δ I (step S4) that remains among the EEPROM60 that is located on the sewing machine body 2.Then, control device 8 adds the correction value Δ I that reads on the level I of the drive current that converses, and calculates the level (I+ Δ I) (step S5) of the drive current that makes new advances.Then, control device 8 is exported as current-order the level of new drive current (I+ Δ I) to A/D converter 53 or A/D converter 54, makes the electric current of level (I+ Δ I) flow through thread solenoid 15 or bottom line solenoid 16 (step S6).
Then, control device 8 judges whether the setting value of line tension has been changed (step S7).When the setting value of line tension has been changed (step S7: be), then step S2 is returned in the processing of control device 8, repeats the processing of above-mentioned steps S2～step S7.On the other hand, (step S7: not), then control device 8 enters step S8 when the setting value of line tension is not changed.In addition, be used in the operation carried out on the guidance panel 5, be contained in the line tension data in the control data or when driving and the switching in when stopping and carrying out the change of line tension with Sewing machines.
In step S8, control device 8 judges whether power supply is cut off (step S8).When power supply is cut off (step S8: be), then the processing of control device 8 finishes.On the other hand, (step S8: not), then step S6 is returned in the processing of control device 8, and flows through thread solenoid 15 or bottom line solenoid 16 with current level, and keeps current line tension when power supply is not cut off.
As mentioned above, in the present embodiment, according to the correction value Δ I among the EEPROM60 that is stored in sewing machine body 2, the drive current of its intrinsic level (I+ Δ I) flows through thread solenoid 15 or bottom line solenoid 16.
Explaining, then is which control device 8 no matter which platform cycle sewing machine main body A～C is possessed, as long as the tension force of setting with guidance panel 5 is identical, then the level I that is calculated at step S3 is just identical.But, in the EEPROM60 of cycle sewing machine main body A, store maintenance correction value (-Δ I1), storing the maintenance correction value in the EEPROM60 of cycle sewing machine main body B is zero, stores maintenance correction value Δ I2 in the EEPROM60 of cycle sewing machine main body C.
Therefore, the level that in step S5, calculates (I+ Δ I), all different for every cycle sewing machine main body A～C.That is, the control device 8 of cycle sewing machine main body A calculates level (I+ Δ I1) in step S5, the control device 8 of cycle sewing machine main body B, calculate level I in step S5, the control device 8 of cycle sewing machine main body C calculates level (I+ Δ I2) in step S5.On cycle sewing machine main body A～C, flow through the drive current of intrinsic level (I+ Δ I) with solenoid 16 with this to thread solenoid 15 or bottom line.
Which platform of cycle sewing machine main body A～C no matter, as long as set same thread tension value with guidance panel 5, the size of tension force that then acts on upper thread or bottom line is all identical on any cycle sewing machine main body A～C.Therefore, no matter on which platform of cycle sewing machine main body A～C, can both make the touch sense of stitching the same, and can reduce the deviation of the line tension between each cycle sewing machine main body A～C, improve the stability of sewing quality and repeated.
And for example, even the control device 8 of cycle sewing machine main body A and cycle sewing machine main body C is combined, the level of its drive current is not to calculate with level (I+ Δ I2), but calculates with level (I-Δ I1).Promptly, because control device 8 has the interchangeability on any cycle sewing machine main body A～C, so no matter how cycle sewing machine main body A～C and control device 8 make up, also can make the deviation that does not have line tension between cycle sewing machine main body A～C, as long as the setting value of the tension force on any cycle sewing machine main body is identical, then the touch sense of stitching is all the same.
Below, the second embodiment of the present invention is described.
In a second embodiment, as shown in Figure 8, be to be used in a plurality of mechanical switch SW1～SWn that is provided with on the sewing machine body 2 to replace the EEPROM60 that is located on the sewing machine body 2.
The end ground connection of each switch SW 1～SWn, and the other end is connected with CPU50 by socket 59 and interface 62.The connection of each switch SW 1～SWn, the set condition of disconnection corresponding to the position of expression binary " 1 " or " 0 ", are weighted in each switch SW 1～SWn on each binary position.
And any one switch (for example, switch SW 1) as sign bit, may be assigned as the setting of negative.Therefore, correction value Δ I, the correction value that is kept with maintaining body (EEPROM60) in first embodiment is the same, can keep with the set condition of so a plurality of switch SW 1～SWn.
So, the control of the CPU50 of this second embodiment, when upper thread is used tension disk 14 output driving currents with tension disk 13 or bottom line, as correction value, store the data that remain among the EEPROM60 except replacing with the set condition of reading these switch SW 1～SWn to read, similarly carry out with first embodiment.
In addition, when setting (maintenance) correction value with these switch SW 1～SWn, switch SW 1～SWn is set at correction value be zero regulation set condition (for example, all be to disconnect) under, by the above-mentioned standard motivation value of control device 8 outputs, the tension force that mensuration uses tension disk 14 to produce from the upper thread of each cycle sewing machine main body with tension disk 13 or bottom line, and can make it reach standard tension force by the determined tension force of method setting of console switch SW1～SWn.So the correction value of setting is self-evident, is poor with typical set value.In addition, can certainly be without control device 8 but have the setting device of the special use of said function.
Below, the 3rd embodiment originally is described.
In the 3rd embodiment, as shown in Figure 9, be to replace the EEPROM60 that is located on the sewing machine body 2 with the variable resistance 63 that is located on the sewing machine body 2.
According to such formation, correction value can keep with the control terminal S and the resistance value between the resistance value between the terminal A and control terminal S and the terminal B of variable resistance 63.
In addition, as shown in figure 10, also can be, and by resistance 66 ground connection control terminal S and terminal B short circuit, and the structure that this resistance 66 and the contact of control terminal S are connected with A/D converter 64.At this moment, keep correction value with the resistance value between control terminal S and the terminal A.
In addition, when knowing correction value in advance, also can be without variable resistance, and with the fixed resistance that can export this correction value.
In addition, in the time of on correction value being remained on this variable resistance 63, determine correction value be zero regulation state (for example, the voltage of the control terminal S of variable resistance 63 is the state of Vdd/2), and variable resistance 63 is placed this correction value is under zero the state, the same when setting correction value with usefulness SW1～SWn of second embodiment, by the above-mentioned standard motivation value of control device 8 outputs, and measure the tension force that produces with tension disk 14 with tension disk 13 or bottom line from the upper thread of each cycle sewing machine main body, make it reach standard tension force to set determined tension force simultaneously with the method for operation variable resistance 63.At this moment, can certainly be without control device 8 but have the setting device of the special use of said function.
In addition, because structure, Fig. 4～characteristic shown in Figure 6, the handling process shown in Figure 7 shown in Fig. 1～Fig. 2 C, identical with among the second or the 3rd embodiment, its explanation of Therefore, omited, the inscape that Fig. 8, Fig. 9 and Figure 10 are identical with Fig. 3 has been used same-sign and has been omitted its explanation.
In addition, the present invention is not limited to the foregoing description, as long as in the scope that does not break away from aim of the present invention, also can carry out various improvement and design alteration.
For example, in EEPROM60, store the correction value Δ I kept sewing machine body 2 intrinsic, but also can store the driving data that keeps the intrinsic relevant drive current-tensile property curve of sewing machine body 2, rather than correction value Δ I.For example, on cycle sewing machine main body A, also can store the driving data of intrinsic relevant drive current-tensile property curve α and remain among the EEPROM60 of cycle sewing machine main body A, on cycle sewing machine main body C, also can remain on the storage of the driving data of intrinsic relevant drive current-tensile property curve γ among the EEPROM60 of cycle sewing machine main body C.Promptly, on cycle sewing machine main body A, also can be corresponding to the information of relation of the level of the drive current that sets with the tension force that when the drive current with this level flows through the thread solenoid 15 of cycle sewing machine main body A, acts on upper thread, store and remain among the EEPROM60.
At this moment, be installed on the control device 8 on the cycle sewing machine main body A, when having set tension force with guidance panel 5, not to calculate the level I of drive current in step S3, but calculate the level I of drive current according to the drive current of reading from EEPROM60-tensile property curve α from drive current-tensile property curve β.And, do not carry out the processing of step S4, step S5, and in step S6, make drive current flow through thread solenoid 15 according to drive current-level I that tensile property curve α calculates.
In addition, in EEPROM60, as the intrinsic information of sewing machine body 2, correction value Δ I when storage has kept the driving upper thread to use tension disk 14 with tension disk 13 or bottom line, but, so long as the intrinsic data of sewing machine body 2, correction value when being not limited to drive upper thread usefulness tension disk 13 or bottom line usefulness tension disk 14, also can be (for example to drive other devices, cloth-feeding device) inherent data the time (when for example being cloth-feeding device, the correction data that the error of the setting cloth feed amount of cloth-feeding device is revised).At this moment, control device 8 is certainly according to inherent data control sewing machine body 2.
In addition, the present invention is not only applicable to carry out the sewing machine body of buttonhole, is applicable to two-needle sewing machine body, sewing machine for covering chain stitch body, chain sitch sewing machine body and other various sewing machine bodies of nail catcher packing sewing machine body, rolling apparatus for sewing certainly yet.
According to the present invention, even owing to sewing machine body and control device packed respectively dispatch from the factory, and sewing machine body and control device make up arbitrarily, also can form the stitching of same touch sense on any sewing machine body according to the line tension of setting.
Claims (8)
1. the wire tension adjustment unit of a Sewing machines has:
To line apply tension force tension disk,
With the linear thrust of drive current of energising put on described tension disk solenoid,
Can set the tension force set mechanism of tension value to described tension disk, it is characterized in that having:
Maintenance to described tension disk be used to revise the correction value of drive current the correction value maintaining body,
Read described correction value and control convertibly to described solenoid from described correction value maintaining body and feed drive current so that reach the control device of the tension value of setting with the tension force set mechanism according to this correction value.
2. the wire tension adjustment unit of Sewing machines according to claim 1 is characterized in that:
Described correction value maintaining body is set on the sewing machine body.
3. the wire tension adjustment unit of Sewing machines according to claim 1 is characterized in that:
Described correction value maintaining body is even also keep the storage unit of described correction value to constitute by cutting off the electricity supply.
4. the wire tension adjustment unit of Sewing machines according to claim 1 is characterized in that:
Described correction value maintaining body is made of the single or multiple switches that mechanically keep on-state or off-state, and keeps described correction value by the on-state or the off-state of described each switch.
5. the wire tension adjustment unit of Sewing machines according to claim 1 is characterized in that:
Described correction value maintaining body is made of resistor, and keeps described correction value by the resistance value of this resistor.
6. according to the wire tension adjustment unit of any one described Sewing machines in the claim 1 to 5, it is characterized in that:
Described correction value is corresponding to poor with corresponding to the setting value of described regulation tension value of the typical set value of regulation tension value.
7. the wire tension adjustment unit of a Sewing machines has:
To line apply tension force tension disk,
With the linear thrust of drive current of energising put on described tension disk solenoid,
Can set the tension force set mechanism of tension value to described tension disk, it is characterized in that having:
The storing mechanism of the driving data of the storage described tension disk of expression and described solenoidal intrinsic tension force and drive current relation,
Read described driving data and control variablely from described storing mechanism and lead to the controlling organization that described solenoidal drive current reaches the tension value of setting with the tension force set mechanism according to described driving data.
8. the wire tension adjustment unit of Sewing machines according to claim 7 is characterized in that:
Described storing mechanism is arranged on the sewing machine body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002035650A JP2003230784A (en) | 2002-02-13 | 2002-02-13 | Sewing machine main body |
| JP2002035650 | 2002-02-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1438376A CN1438376A (en) | 2003-08-27 |
| CN100507125C true CN100507125C (en) | 2009-07-01 |
Family
ID=27678063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031042864A Expired - Fee Related CN100507125C (en) | 2002-02-13 | 2003-02-10 | Thread-tension adjusting device of sewing machine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2003230784A (en) |
| KR (1) | KR20030068408A (en) |
| CN (1) | CN100507125C (en) |
| DE (1) | DE10304780B4 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007068693A (en) * | 2005-09-06 | 2007-03-22 | Juki Corp | Thread tension device of sewing machine |
| JP2008036192A (en) * | 2006-08-08 | 2008-02-21 | Brother Ind Ltd | Thread tension guide of sewing machine |
| JP5174414B2 (en) * | 2007-10-05 | 2013-04-03 | Ｊｕｋｉ株式会社 | Sewing thread tension control device |
| JP5427438B2 (en) * | 2009-02-27 | 2014-02-26 | Ｊｕｋｉ株式会社 | sewing machine |
| KR100948677B1 (en) * | 2009-08-10 | 2010-03-18 | 한국봉제기술연구소 | Tension control appartus of cocoon bobin for embroidery maschine |
| CH709666A1 (en) | 2014-05-16 | 2015-11-30 | Bernina Int Ag | Apparatus and method for influencing a position of nodes between the upper and lower threads for sewing with a sewing machine. |
| JP2019005502A (en) * | 2017-06-28 | 2019-01-17 | ブラザー工業株式会社 | sewing machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55163073A (en) * | 1979-06-06 | 1980-12-18 | Janome Sewing Machine Co Ltd | Device for automatically setting tension of cotton of sewing machine |
| JPS60142888A (en) * | 1983-12-29 | 1985-07-29 | ジューキ株式会社 | Yarn clamp controller of automatic stitching sewing machine |
| IT1217796B (en) * | 1988-06-07 | 1990-03-30 | Rockwell Rimoldi Spa | ELECTRONIC DEVICE FOR THE MANAGEMENT OF AUTOSETTING IN INDUSTRIAL SEWING MACHINES. |
| JP4046431B2 (en) * | 1999-01-18 | 2008-02-13 | Ｊｕｋｉ株式会社 | Sewing thread tension device |
| JP2002113274A (en) * | 2000-10-06 | 2002-04-16 | Juki Corp | Thread tension device of sewing machine |
-
2002
- 2002-02-13 JP JP2002035650A patent/JP2003230784A/en active Pending
-
2003
- 2003-02-06 DE DE10304780A patent/DE10304780B4/en not_active Withdrawn - After Issue
- 2003-02-06 KR KR10-2003-0007396A patent/KR20030068408A/en not_active Application Discontinuation
- 2003-02-10 CN CNB031042864A patent/CN100507125C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR20030068408A (en) | 2003-08-21 |
| JP2003230784A (en) | 2003-08-19 |
| CN1438376A (en) | 2003-08-27 |
| DE10304780B4 (en) | 2008-04-17 |
| DE10304780A1 (en) | 2003-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100507125C (en) | Thread-tension adjusting device of sewing machine | |
| US4873931A (en) | Programmed thread regulating apparatus for a sewing machine | |
| JPH02139453A (en) | Tension control apparatus for supplying weft yarn in loom for continously-supplying weft | |
| CN1928184B (en) | Trapper of sewing machine | |
| CN101748564B (en) | Control device and control method of sewing machine | |
| KR930012187B1 (en) | Control device of an automatic needlework sewing maching | |
| KR100561656B1 (en) | Thread tension apparatus for sewing machine | |
| CN208856678U (en) | A kind of pulp yarn combination machine winding tension adaptation auxiliary detection device | |
| CN1407163A (en) | Thread tension controller of sewing machine | |
| US5725174A (en) | Winding apparatus for a yarn advancing at a constant speed | |
| US5454334A (en) | Control apparatus for embroidery sewing machine | |
| US5211119A (en) | Main-presser driving apparatus for automatic binding sewing machine | |
| CN1321236C (en) | Needle-thread tensioning control device for sewing machine | |
| US5699837A (en) | Combined pile feeder control system and pile warp let-off motion for pile weaving machine | |
| US4694762A (en) | Sewing machine control apparatus | |
| CN101798728B (en) | Sewing machine and thread tension setting method | |
| CN207030652U (en) | Automatic haircuts machine | |
| JPS59137096A (en) | Electronic sewing machine | |
| GB2077952A (en) | Methods of controlling an embroidery stitching or sewing machine | |
| CN208183238U (en) | A kind of novel suitcase sewing machine | |
| US4903914A (en) | Warping yarn accumulator | |
| CN105926201A (en) | Embroidering machine and upper thread tension adjustment method therein | |
| KR20030022048A (en) | Sewing machine | |
| JPS5940896A (en) | Stitchyarn control apparatus of sewing machine | |
| AU592234B2 (en) | Automatic needle thread supply control system |
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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090701 Termination date: 20110210 |