CN102418244B - Sewing machine and control method thereof - Google Patents
Sewing machine and control method thereof Download PDFInfo
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- CN102418244B CN102418244B CN 201110254073 CN201110254073A CN102418244B CN 102418244 B CN102418244 B CN 102418244B CN 201110254073 CN201110254073 CN 201110254073 CN 201110254073 A CN201110254073 A CN 201110254073A CN 102418244 B CN102418244 B CN 102418244B
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Abstract
The invention relates to a sewing machine and a control method thereof. The sewing machine enables an operator to determine the facial line tensile force before the sewing operation. A CPU judges whether or not the position of a foot rest belongs to a driving area (S90). The driving area is the position of the foot rest when the operator steps the foot rest to a stepping-up position (Pb1). The stepping-up position (Pb1) is arranged along a direction which is opposite to an operation in which the operator steps the foot rest from a neutral position (Pn) to a stepping-down position (Pf2) in order to do the sewing action. When the position of the foot rest is in the driving area, the CPU stops a cloth pressing member to move to a pressing position (S170), and a line clamping spiral line tube works to apply a tensile force (S180) to the facial line, so the operator can determine the facial line tensile force.
Description
Technical field
The present invention relates to the control method of Sewing machines and Sewing machines.In particular to the Sewing machines of the chucking power that changes a pair of clamp dish by the operation foot pedal and the control method of Sewing machines.
Background technology
Sewing machines comprises wire-clamping device.Wire-clamping device applies tension force to upper thread.Wire-clamping device has a pair of clamp dish.A pair of clamp dish clamping upper thread.Sewing machines changes upper thread tension force according to the kind of the processing cloth of desiring to make, thickness etc., and the chucking power that changes a pair of clamp dish is made.Wire-clamping device comprises the actuators such as solenoid for the chucking power that changes a pair of clamp dish.
In the Sewing machines that Japan Patent discloses 2008 No. 36192 communique is put down in writing, by the operation foot pedal compress member and wire-clamping device are moved in linkage.The compress member is pressed processing cloth.Be positioned at foot pedal under the situation of neutral position, Sewing machines rises the compress member, and removes the chucking power of a pair of clamp dish.The neutral position is the reference position of operator's inoperation foot pedal.When the operator is operated to foot pedal when stepping on the position, Sewing machines makes the compress member drop to the position that will processing cloth presses on needle plate, and to a pair of clamp dish effect chucking power, and begin to make.
Wire-clamping device changes the chucking power of a pair of clamp dish according to the actuating quantity of actuator.In the making of reality, need change the chucking power of a pair of clamp dish according to material, the thickness of employed line.In Sewing machines in the past, need change the chucking power of a pair of clamp dish in the line degree of tightness of making back observation stitching.Therefore, Sewing machines need carry out the several times examination to be made, and expends time in and cost.
Change at actuator under the situation of chucking power of a pair of clamp dish, the operator need only make actuator drive in order to confirm upper thread tension force.In order to drive the actuator of Sewing machines, the operator need be operated to foot pedal and step on the position.At this moment, because Sewing machines begins to make, therefore, exist the operator can't confirm the possibility of upper thread tension force.
Summary of the invention
The object of the present invention is to provide and a kind ofly just can confirm the control method of Sewing machines and the Sewing machines of upper thread tension force not beginning to make operator under the situation of operation.
The Sewing machines of technical scheme 1 comprises clamp driving mechanism, compress driving mechanism, makes mechanism, operating equipment, test section, control part.Above-mentioned clamp driving mechanism changes the chucking power of a pair of clamp dish, and above-mentioned a pair of clamp dish clamping upper thread also applies tension force to upper thread.Above-mentioned compress driving mechanism drives the compress member, and this compress member will be processed cloth and press on needle plate.The above-mentioned mechanism of making forms stitching at the processing cloth that is pressed on needle plate by above-mentioned compress member.Aforesaid operations equipment can be operated between the preoperative reference position of beginning and sewing position.Above-mentioned sewing position is that the above-mentioned mechanism of making of instruction is in the position of processing cloth formation stitching.Above-mentioned test section detects the operating position of aforesaid operations equipment.Control part is controlled above-mentioned compress driving mechanism and above-mentioned clamp driving mechanism according to the detected aforesaid operations of above-mentioned test section position.Detecting the aforesaid operations position at above-mentioned test section is positioned under the situation of said reference position, above-mentioned control part is controlled above-mentioned compress driving mechanism, so that above-mentioned compress member is positioned at the separation point position, and controls the clamp driving mechanism, to remove the chucking power of above-mentioned a pair of clamp dish.Above-mentioned separation point position is the position of leaving from above-mentioned needle plate.Aforesaid operations equipment can be operated towards activation point.Above-mentioned activation point is to be positioned at and the position of going up in the opposite direction towards the side of above-mentioned sewing position from the said reference position.Above-mentioned control part comprises first control part.Above-mentioned first control part is controlled the clamp driving mechanism, so that above-mentioned test section detects the aforesaid operations position when being positioned at above-mentioned activation point, above-mentioned a pair of clamp dish has chucking power.Therefore, the operator can confirm upper thread tension force.The sewing function prevents operator's maloperation and make operating equipment be positioned at sewing position when confirming upper thread tension force.
In the Sewing machines of technical scheme 2, above-mentioned control part also comprises second control part.Above-mentioned second control part is controlled above-mentioned compress driving mechanism, so that above-mentioned test section detects the aforesaid operations position when being positioned at above-mentioned activation point, above-mentioned compress member is positioned at above-mentioned separation point position.So when the operator was operated to operating equipment activation point and confirms upper thread tension force, the sewing function prevented that the compress member from pressing upper thread and changing upper thread tension force.
In the Sewing machines of technical scheme 3, aforesaid operations equipment is that the operator can step on the foot pedal of operating and stepping on lift operations.The said reference position is the position of operator's foot pedal when not operating foot pedal.Above-mentioned sewing position is the position that the operator has carried out stepping on foot pedal when operating.Above-mentioned activation point is the position of operator's foot pedal when having carried out stepping on lift operations.Utilize foot pedal to carry out stepping under the situation of lift operations the operator, test section can detect activation point.So the operator can carry out other operations with two hands when confirming upper thread tension force, therefore, can improve operating efficiency.
The Sewing machines of technical scheme 4 also comprises the configuration part.The above-mentioned chucking power of above-mentioned a pair of clamp dish is set in above-mentioned configuration part.Detect the aforesaid operations position at above-mentioned test section and be positioned under the situation of said reference position, above-mentioned chucking power can be set in above-mentioned configuration part.Therefore, the sewing function prevents operator's maloperation and change the upper thread tension force that the configuration part sets when confirming upper thread tension force.
In the control method of the Sewing machines of technical scheme 5, above-mentioned Sewing machines comprises clamp driving mechanism, compress driving mechanism, makes mechanism, operating equipment.Above-mentioned clamp driving mechanism changes the chucking power of a pair of clamp dish, and above-mentioned a pair of clamp dish clamping upper thread also applies tension force to upper thread.The compress driving mechanism drives the compress member, and this compress member will be processed cloth and press on needle plate.Make mechanism and form stitching at the processing cloth that is pressed on needle plate by above-mentioned compress member.Operating equipment can be operated between the preoperative reference position of beginning and sewing position.Above-mentioned sewing position is that the above-mentioned mechanism of making of instruction is in the position of processing cloth formation stitching.Operating position at aforesaid operations equipment is positioned under the situation of said reference position, Sewing machines is controlled above-mentioned compress driving mechanism, so that above-mentioned compress member is positioned at the separation point position, and controls the clamp driving mechanism, so that above-mentioned a pair of clamp dish is removed chucking power.Above-mentioned separation point position is the position of leaving from above-mentioned needle plate.The control method of above-mentioned Sewing machines comprises judges operation and control operation.In above-mentioned judgement operation, judge whether the aforesaid operations position is positioned at activation point.Above-mentioned activation point is to be positioned at and the position of going up in the opposite direction towards the side of above-mentioned sewing position from the said reference position.In above-mentioned control operation, the clamp driving mechanism is controlled, make to be positioned under the situation of above-mentioned activation point in the aforesaid operations position that above-mentioned a pair of clamp dish has chucking power.Therefore, the operator can confirm upper thread tension force.The sewing function prevents operator's maloperation and make operating equipment be positioned at sewing position when confirming upper thread tension force.
The control method of the Sewing machines of technical scheme 6 is controlled above-mentioned compress driving mechanism, makes to be positioned under the situation of above-mentioned activation point in the aforesaid operations position, and above-mentioned compress member is positioned at above-mentioned separation point position.So when the operator was operated to operating equipment activation point and confirms upper thread tension force, the sewing function prevented that the compress member from pressing upper thread and changing upper thread tension force.
In the control method of the Sewing machines of technical scheme 7, aforesaid operations equipment is that the operator can step on operation and step on the foot pedal of lift operations.The said reference position is the position of operator's foot pedal when not operating foot pedal.Above-mentioned sewing position is the position that the operator has carried out stepping on foot pedal when operating.Above-mentioned activation point is the position of operator's foot pedal when having carried out stepping on lift operations.Utilize foot pedal to carry out stepping under the situation of lift operations the operator, above-mentioned judgement operation is judged the aforesaid operations position and is positioned at activation point.So the operator can carry out other operations with two hands when confirming upper thread tension force, therefore, can improve operating efficiency.
The control method of the Sewing machines of technical scheme 8 also comprises the setting operation.When above-mentioned setting operation is positioned at the said reference position in the aforesaid operations position, can set the chucking power of above-mentioned a pair of clamp dish.Therefore, the sewing function prevents operator's maloperation and change the upper thread tension force that the configuration part sets when confirming upper thread tension force.
Description of drawings
Fig. 1 is the right view of Sewing machines.
Fig. 2 is the vertical profile side view of the major part of Sewing machines.
Fig. 3 is the exploded perspective view of clamp mechanism.
Fig. 4 is the block diagram of the control system of Sewing machines.
Fig. 5 (A) is the major part side view of the operating position of expression foot pedal.
Fig. 5 (B) is the figure of relation of operating position, compress member, enabling signal, the upper thread tension force of expression foot pedal.
Fig. 6 is the process chart of Sewing machines integral body.
Fig. 7 is that driving force is set the flow chart that control is handled.
The specific embodiment
Describe with reference to the Sewing machines 1 of accompanying drawing to embodiment of the present invention.The left of Fig. 1, right-hand, the paper outside, paper inboard are represented the place ahead, rear, right-hand, the left of Sewing machines 1 respectively.
With reference to Fig. 1, the structure of Sewing machines 1 is described.Sewing machines 1 comprises base portion 2, uprights 5, horn portion 6.Sewing machines 1 is located on the workbench 8.Uprights 5 is erect the rearward end of being located at base portion 2.Horn portion 6 extends towards the place ahead from the upper end of uprights 5 and relative with base portion 2.Uprights 5 and horn portion 6 comprise motor of sewing machine 9 (with reference to Fig. 4).Be provided with motor of sewing machine 9 at the rear of horn portion 6.Lid member 7 covers motor of sewing machine 9.Motor of sewing machine 9 drives shank 10 by needle bar drive device (not shown) and moves up and down.Be provided with shank 10 in the place ahead of horn portion 6.Shank 10 can be installed eedle 11 in its lower end.Because needle bar drive device is known technology, therefore, omits its detailed explanation.
Below, cloth-pressing device 20 is described.Be provided with cloth-pressing device 20 at feeding table 13.Cloth-pressing device 20 comprises pressure handle 21, pressure handle bar 23, compress member 24.From right-hand observation, pressure handle 21 is bending.The base end part of pressure handle 21 (rearward end) is fixed in the upper surface of feeding table 13.Pressure handle 21 has pressing piece installation portion 21a at its leading section.Pressing piece installation portion 21a overlooks rectangular frame shape, and compress member 24 is supported.Pressure handle 21 fixedly has back shaft 22 at its fore-and-aft direction central portion.Back shaft 22 extends along left and right directions.Pressure handle 21 is respectively equipped with pressure handle bar 23 in its left and right sides.Each pressure handle bar 23 extends along fore-and-aft direction.Back shaft 22 supports each pressure handle bar 23 rotationally in the substantial middle portion of fore-and-aft direction.
Pressing piece installation portion 21a can support the connecting portion (not shown) of compress member 24 with moving up and down.Two connecting holes (not shown) about the connecting portion of compress member 24 has.The leading section of pressure handle bar 23 is inserted respectively from the rear and is led in connecting hole, and is connected with compress member 24.The rearward end of pressure handle bar 23 is connected with the upper end of the spring axis of guide 25 rotationally.Component of the spring seat 26 supports to the bottom of the spring axis of guide 25 can slide along the vertical direction.Compression helical spring 27 is installed on the spring axis of guide 25 on the component of the spring seat 26.
Compression helical spring 27 utilizes spring force to a pair of pressure handle bar 23 application of forces, make its at the center of back shaft 22 counter clockwise direction towards from right-hand the observation time rotate.Pressure handle bar 23 is pressed into compress member 24 by the pressing piece installation portion 21a of pressure handle 21 upper surface of needle plate 12.Bolt 29 will be pressed the left and right sides that working plate 28 is fixed in pressure handle bar 23 at the rear side of back shaft 22.Press working plate 28 under the effect of the spring force of compression helical spring 27 and contact with the member 17 that moves up and down.Move up and down member 17 under the driving of compress motor 19 (with reference to Fig. 4) and move up and down.
Below, moving up and down of compress member 24 described.When compress motor 19 (with reference to Fig. 4) just then when driving, the member 17 that moves up and down descends, and will press working plate 28 and depress.Pressure handle bar 23 overcomes the spring force of compression helical spring 27, and the clockwise direction (among Fig. 1) that is rotating fulcrum towards from right-hand the observation time with back shaft 22 rotates.Because compress member 24 is connected with the leading section of pressure handle bar 23, therefore, compress member 24 rises along with the rotation of pressure handle bar 23.
When driving when 19 counter-rotatings of compress motor, the member 17 that moves up and down rises, and removes pressing depressing of working plate 28.Pressure handle bar 23 rotates with the counter clockwise direction (among Fig. 1) that back shaft 22 is rotating fulcrum towards from right-hand the observation time under the effect of the spring force of compression helical spring 27.Compress member 24 descends along with the rotation of pressure handle bar 23.
Below, foot pedal 57 is described.Foot pedal 57 is located on the floor.When the operator did not operate foot pedal 57, foot pedal 57 was under the effect of compression spring (not shown) and be positioned at neutral position Pn (with reference to Fig. 5 (A)).One end of foot pedal 57 is connected with the end of dwang 52 by connecting rod 56.Foot pedal 57 can be that rotating fulcrum rotates with back shaft 57a.Back shaft 57a is located at the bottom of foot pedal 57.
Back shaft 51 supports to the base end part of dwang 52 rotatable.Back shaft 51 is fixed among the cabinet B of workbench 8 belows.Extension spring 53 by spring force to the dwang 52 counter clockwise direction application of force towards from right-hand the observation time.Locating part 54 is located at the top of dwang 52.When dwang 52 contacted with locating part 54, the counter clockwise direction of locating part 54 restriction dwangs 52 was rotated.The base end part of dwang 52 is connected with the driving shaft of potentiometer 55.The driving shaft of potentiometer 55 and dwang 52 synchronously rotate.
When the operator tramped with one's feet down foot pedal 57, foot pedal 57 rotated.When foot pedal 57 rotated, dwang 52 rotated by connecting rod 56.When dwang 52 rotates, the drive shaft turns of potentiometer 55.Potentiometer 55 will detect voltage and output to control device 60 described later (with reference to Fig. 4).Detect voltage corresponding to the angle position of the driving shaft of potentiometer 55.Details from the detection voltage of potentiometer 55 will be described hereinafter.
Describe with reference to the wire-clamping device 30 of Fig. 2, Fig. 3.Be provided with wire-clamping device 30 in horn portion 6.Wire-clamping device 30 comprises clamp mechanism 31 and clamp solenoid 41.Clamp mechanism 31 is located at the correct frame 6a of horn portion 6.Clamp solenoid 41 is located at the left frame 6b of horn portion 6.
Below clamp platform 32 is described.Clamp platform 32 is installed in the retaining hole 6c.It is cylindric that retaining hole 6c is, and is formed at correct frame 6a.Retaining hole 6c is towards right-hand opening.Screwed hole 6d is formed at correct frame 6a.The axis direction quadrature of the direction of screwed hole 6d and retaining hole 6c.Screw 36 inserts in the screwed hole 6d and with it and screws togather, and clamp platform 32 is fixed in correct frame 6a.The front end face of screw 36 is pressed the bottom surface of endless groove 32d.Endless groove 32d is formed at the complete cycle of clamp platform 32.
Below clamp axle 33 is described.Clamp axle 33 comprises that path axial region 33a, big footpath axial region 33b, dish support axial region 33c, screw thread forms axial region 33d towards the right-hand member side from left end side integratedly on coaxial.Path axial region 33a and big footpath axial region 33b are roughly cylindric.The external diameter of big footpath axial region 33b is bigger than the external diameter of path axial region 33a.Pin thread is formed at the outer peripheral face that screw thread forms axial region 33d.Through hole 33e is formed at the axle center of path axial region 33a and big footpath axial region 33b.Driving shaft 40 can be inserted and lead in through hole 33e.Grooving 33f is formed at dish and supports axial region 33c and screw thread formation axial region 33d along the axle center.Through hole 33e is communicated with grooving 33f.
The path axial region 33a of clamp axle 33 is disposed in the dead eye 32c of clamp platform 32.Screw 37 is fixed in clamp platform 32 with path axial region 33a.The big footpath axial region 33b of clamp axle 33 is disposed in the spring accepting hole 32a of clamp platform 32.Dish supports axial region 33c and screw thread formation axial region 33d gives prominence to towards the right-hand of right side of clamp platform 32.
Below thread take-up spring 39 is described.Thread take-up spring 39 is made of a wires.Thread take-up spring 39 comprises spire 39a and bend 39b.Spire 39a is the helical form part of metal wire.Bend 39b links to each other with the right-hand member of spire 39a, and crooked.Big footpath axial region 33b is disposed at the inside of spire 39a.The left part of spire 39a is fixed in big footpath axial region 33b.Spire 39a is disposed in the spring accepting hole 32a of clamp platform 32.Bend 39b extends towards the outside of clamp platform 32.
Below movable clamp dish 34 and geometrical clamp drum 35 are described.Movable clamp dish 34 and geometrical clamp drum 35 are made of a metallic plate respectively, are roughly plate-like.Movable clamp dish 34 heart portion therein comprises the pair of semicircular shaped hole 34a of portion.It is banded that the 34b of bridge formation portion is, and is formed between the 34a of pair of holes portion.The dish of clamp axle 33 supports axial region 33c and inserts in the 34a of hole portion of movable clamp dish 34.The 34b of bridge formation portion is disposed at the grooving 33f that dish supports axial region 33c.Movable clamp dish 34 can move along the axle center of clamp axle 33.
Below hold-down nut 38 is described.Hold-down nut 38 screws in the right part of the screw thread formation axial region 33d of clamp axle 33.The hold-down nut 38 movable clamp dishes 34 of restriction and geometrical clamp drum 35 are towards right-hand movement.
Below driving shaft 40 is described.Driving shaft 40 is configured to and can moves along the axle center of the through hole 33e of clamp axle 33.When driving aftermentioned clamp solenoid 41 (with reference to Fig. 2), driving shaft 40 is towards right-hand movement.The right-hand member of driving shaft 40 contacts with the 34b of bridge formation portion of movable clamp dish 34, and movable clamp dish 34 is pressed towards geometrical clamp drum 35 sides.
Below clamp solenoid 41 is described.As shown in Figure 2, clamp solenoid 41 is disposed at the left frame 6b of horn portion 6.Clamp solenoid 41 is general proportional solenoid.Clamp solenoid 41 comprises output shaft 41a and drive unit (not shown).Output shaft 41a can move along left and right directions.Drive unit drives output shaft 41a according to driving voltage.When aftermentioned control device 60 (with reference to Fig. 4) arrived clamp solenoid 41 with drive voltage supply, output shaft 41a was towards right-hand mobile predetermined distance.The displacement of output shaft 41a depends on the fixed position of hold-down nut 38.Proportional solenoid makes output shaft 41a side-prominent towards hold-down nut 38 by propulsive force.Propulsive force and driving voltage are proportional.
The right part of output shaft 41a has the bolt hole (not shown) towards right-hand opening.Stroke is adjusted bolt 43 and is screwed togather with bolt hole.Stroke is adjusted bolt 43 can adjust the outstanding overhang from output shaft 41a by the nut 43a that is tightened.Jackshaft 42 is adjusted bolt 43 with stroke and is connected.Jackshaft 42, output shaft 41a, driving shaft 40 be positioned at coaxial on.Over cap 44 covers the left part of clamp solenoid 41.
Upper thread tension adjusting method with reference to the wire-clamping device 30 of Fig. 2 describes.The operator supplies to eedle 11 with upper thread via wire-clamping device 30, thread take-up tension lever (not shown).Then, Sewing machines 1 begins to make action.Line tube (not shown) is supplied with upper thread.The operator is disposed at upper thread between movable clamp dish 34 and the geometrical clamp drum 35 when upper thread is suspended to wire-clamping device 30.Then, the operator is suspended to upper thread the bend 39b of thread take-up spring 39.Do not begin to make under the state of action at Sewing machines 1, the right-hand member of jackshaft 42 does not contact with the left end of driving shaft 40.The left end of the right-hand member of jackshaft 42 and driving shaft 40 separates predetermined distance.
Because control device 60 (with reference to Fig. 4) arrives clamp solenoid 41 with drive voltage supply when making beginning, therefore, output shaft 41a is towards right-hand movement.Because output shaft 41a is towards right-hand movement, therefore, jackshaft 42, driving shaft 40 are towards right-hand movement.
As shown in Figure 3, because driving shaft 40 is towards right-hand movement, so driving shaft 40 contacts with the movable 34b of bridge formation portion of clamp dish 34, and movable clamp dish 34 is pressed towards right-hand.Movable clamp dish 34 is pressed geometrical clamp drum 35 towards right-hand, but hold-down nut 38 restriction geometrical clamp drums 35 are towards right-hand movement.So, between movable clamp dish 34 and geometrical clamp drum 35, produce clamp pressure.Movable clamp dish 34 and geometrical clamp drum 35 clamping upper threads apply tension force to upper thread.
With reference to the block diagram of Fig. 4, the control system of Sewing machines 1 is described.Control device 60 comprises input/output interface (I/O) 61, CPU62, ROM63, RAM64, nonvolatile memory 65, drive circuit 67～71 etc.
Input/output interface 61 is connected with guidance panel 66, each drive circuit 67～71, potentiometer 55 etc.Drive circuit 67 is for the circuit that drives clamp solenoid 41.Drive circuit 68 is for the circuit that drives motor of sewing machine 9.Drive circuit 69 is for the circuit that drives X motor 72.X motor 72 drives feeding table 13 by the directions X driving mechanism at directions X.Drive circuit 70 is for the circuit that drives Y motor 73.Y motor 73 drives feeding table 13 by the Y-direction driving mechanism in Y-direction.Directions X driving mechanism and Y-direction driving mechanism are located at cloth feeding mechanism.Drive circuit 71 is for the circuit that drives compress motor 19.X encoder 72E is located at the driving shaft of X motor 72.Y encoder 73E is located at the driving shaft of Y motor 73.N encoder 19E is located at the driving shaft of compress motor 19.X encoder 72E, Y encoder 73E, N encoder 19E are rotary encoders.
ROM63 stores processing controls program of making control program, Sewing machines 1 integral body etc. in advance.Making control program is for driving the various driving mechanisms of control, to form the program of various patterns at processing cloth.RAM64 comprises various storage areas, pointer, counter etc. as required.Various storage area storage stitch datas, operation result etc.The stitch data used data that are CPU62 when making action.Operation result is the result after CPU62 carries out calculation process.Nonvolatile memory 65 can electrically write again.
Describe with reference to the enabling signal of the position of Fig. 5 (A), Fig. 5 (B) foot pedal 57 when the operator is operated, compress member 24, motor of sewing machine 9, the relation that applies upper thread tension force.
When the operator did not operate foot pedal 57, foot pedal 57 was positioned at the neutral position Pn (reference position) shown in Fig. 5 (A).The operator can step on or step on liter from neutral position Pn with foot pedal 57.Present embodiment is made as benchmark " 0 " with neutral position Pn.In addition, present embodiment stepping on direction and stepping on and rise direction and be made as "+" and "-" respectively foot pedal 57.
As operator when to be neutral position Pn towards "+" direction step on from benchmark " 0 " with foot pedal 57, foot pedal 57 is positioned at steps on position Pf1.When the operator further stepped on from stepping on position Pf1 foot pedal 57 towards "+" direction, foot pedal 57 is positioned at stepped on position Pf2.Step on when rising towards "-" direction when the operator is neutral position Pn with foot pedal 57 from benchmark " 0 ", foot pedal 57 is positioned to be stepped on raise-position and puts Pb1.Neutral position Pn, step on position Pf1, Pf2, stepping on raise-position, to put Pb1 corresponding with detection voltage from potentiometer 55 respectively.Be under the situation of " 0 " at neutral position Pn, stepping on the value of position Pf1 for "+" from the detection voltage of potentiometer 55.Step on the detection voltage at Pf2 place, position and be the value of "+", and bigger than the value of stepping on position Pf1.Step on detection voltage that raise-position puts the Pb1 place and be the value of "-".Nonvolatile memory 65 is stored neutral position Pn, steps on position Pf1, Pf2, is stepped on the detection voltage from potentiometer 55 that the Pb1 place is put in raise-position.
Shown in Fig. 5 (B), when foot pedal 57 was positioned at neutral position Pn, compress member 24 was positioned at lifting position.Lifting position is that compress member 24 is apart from needle plate 12 position farthest.When foot pedal 57 was positioned at neutral position Pn, the enabling signal of motor of sewing machine 9 was cut off.Clamp solenoid 41 is not worked, and upper thread is not applied tension force.
When foot pedal 57 is positioned at when stepping on position Pf1, compress member 24 is positioned at pressing position.Pressing position is that compress member 24 will be processed the position that cloth presses on needle plate 12.When foot pedal 57 is positioned at when stepping on position Pf1,41 work of clamp solenoid apply tension force to upper thread.The enabling signal of motor of sewing machine 9 is cut off.
When foot pedal 57 is positioned at when stepping on position Pf2, compress member 24 is positioned at pressing position.When foot pedal 57 is positioned at when stepping on position Pf2,41 work of clamp solenoid, the enabling signal of motor of sewing machine 9 is connected.Therefore, apply under the state of tension force at 41 pairs of upper threads of clamp solenoid, Sewing machines 1 is made action.
Step on raise-position when putting Pb1 when foot pedal 57 is positioned at, compress member 24 is positioned at lifting position.Step on raise-position when putting Pb1 when foot pedal 57 is positioned at, 41 work of clamp solenoid apply tension force to upper thread.The enabling signal of motor of sewing machine 9 is cut off.
With reference to the flow chart of Fig. 6, the disposed of in its entirety of Sewing machines 1 is described.The control device 60 of Sewing machines 1 is carried out the disposed of in its entirety of Sewing machines 1.Symbol Si (i=10,20,30 among the figure ...) represent each step.
When the operator connected power supply, potentiometer 55 outputs detected voltage.The position of foot pedal 57 is corresponding to detecting voltage.CPU62 reads in detection voltage, obtains the position (S10) of foot pedal 57.CPU62 judges whether the position of foot pedal 57 is in neutralization zone (S20).The neutralization zone is that the detection voltage ratio of potentiometer 55 reaches zone corresponding to the voltage of stepping on position Pf1 greatly and not corresponding to stepping on voltage that raise-position puts Pb1.When the position of foot pedal 57 was positioned at neutral position Pn, the position of foot pedal 57 belonged to the neutralization zone." reference position " of the present invention is the position of the foot pedal 57 in the neutralization zone.Do not belong in the position of foot pedal 57 that (S20: not), CPU62 makes to handle and transfers to S10 under the situation of neutralization zone.
Belong in the position of foot pedal 57 under the situation of neutralization zone (S20: be), CPU62 drives compress motor 19, makes compress member 24 move to lifting position (S30).CPU62 does not work (S40) clamp solenoid 41, and makes processing transfer to S50.The initialization of Sewing machines 1 when being equivalent to the operator and connecting power supply from the processing of S10 to S40.The initialization of Sewing machines 1 can prevent from beginning to make action suddenly when the operator steps under the state of foot pedal 57 power connection.
CPU62 reads in the detection voltage of potentiometer 55 outputs, the position (S50) that obtains foot pedal 57.CPU62 judges whether the position of the foot pedal 57 that obtains belongs to neutralization zone (S60) in S50.Belong in the position of foot pedal 57 under the situation of neutralization zone (S60: be), CPU62 drives compress motor 19, makes compress member 24 move to lifting position (S100).CPU62 does not work (S110) clamp solenoid 41, and makes processing transfer to S50.
Do not belong in the position of foot pedal 57 (S60: not), CPU62 judges whether the position of foot pedal 57 belongs to area pressed (S70) under the situation of neutralization zone.Area pressed is that the detection voltage of potentiometer 55 is more than corresponding to the voltage of stepping on position Pf1 and do not reach zone corresponding to the voltage of stepping on position Pf2.When the position of foot pedal 57 is positioned at when stepping on position Pf1, the position of foot pedal 57 belongs to area pressed.Belong in the position of foot pedal 57 under the situation of area pressed (S70: be), CPU62 drives compress motor 19, makes compress member 24 move to pressing position (S120).CPU62 makes 41 work (S130) of clamp solenoid, and makes processing transfer to S50.
Do not belong in the position of foot pedal 57 under the situation of area pressed that (S70: not), CPU62 judges whether the position of foot pedal 57 belongs to and makes zone (S80).The detection voltage of making the zone and be potentiometer 55 is corresponding to the zone more than the voltage of stepping on position Pf2.When the position of foot pedal 57 is positioned at when stepping on position Pf2, foot pedal 57 belongs to makes the zone." sewing position " of the present invention is the position of making the foot pedal 57 in the zone.Belong under the situation of making the zone (S80: be) in the position of foot pedal 57, CPU62 drives compress motor 19, forbids that compress member 24 puts mobile (S140) from pressing position raise-position up.CPU62 is (S150) output enabled instruction under the state that clamp solenoid 41 is connected, and begins to make action (S160).Enabled instruction is the instruction that drives motor of sewing machine 9.After finishing to make action, CPU62 makes to handle and turns back to S10.
Do not belong in the position of foot pedal 57 (S80: not), CPU62 judges whether the position of foot pedal 57 belongs to drive area (S90) under the situation of making the zone.The drive area is that the detection voltage of potentiometer 55 is corresponding to the zone of stepping on below the voltage that raise-position puts Pb1.Step on raise-position when putting Pb1 when the position of foot pedal 57 is positioned at, the position of foot pedal 57 belongs to the drive area." activation point " of the present invention is the position of the foot pedal 57 in the drive area.Belong in the position of foot pedal 57 under the situation of drive area (S90: be), CPU62 drives compress motor 19, forbids that compress member 24 moves (S170) from lifting position towards pressing position.CPU62 makes 41 work of clamp solenoid, and upper thread is applied tension force (S180), and makes processing transfer to S50.
Do not belong in the position of foot pedal 57 that (S90: not), because the position that can't correctly obtain foot pedal 57, CPU62 makes again to handle and transfers to S50, and repeats the later processing of S50 under the situation of drive area.
With reference to the flow chart of Fig. 6, the action of the disposed of in its entirety of Sewing machines 1 and effect are described.
When the operator connected power supply, Sewing machines 1 made compress member 24 move to initial position (lifting position).Usually, the operator when connecting power supply, inoperation foot pedal 57.Therefore, foot pedal 57 is positioned at neutral position Pn.Sewing machines 1 drives compress motor 19 by drive circuit 71.Therefore, compress member 24 moves to lifting position.When foot pedal 57 was positioned at neutral position Pn, clamp solenoid 41 was not worked.Therefore, clamp solenoid 41 does not apply tension force to upper thread.
Do not step on the operator under the state of foot pedal 57, the processing cloth of desiring to make is configured in carries on the fabric swatch 16.Compress member 24 is positioned at lifting position.Clamp solenoid 41 is not worked.
The operator steps on foot pedal 57 to stepping on position Pf1.Compress member 24 moves to pressing position.41 work of clamp solenoid.
The operator further steps on foot pedal 57 for beginning to make.The operator steps on foot pedal 57 to stepping on position Pf2.Compress member 24 does not move to lifting position and is positioned at pressing position.41 work of clamp solenoid.Sewing machines 1 sends the instruction that begins to make, and carries out and makes processing.
After making the processing beginning, the operator can end to step on the operation of foot pedal 57.Make the processing end, foot pedal 57 is got back under the situation of neutral position Pn, compress member 24 moves to lifting position.Clamp solenoid 41 is not worked.
The operator steps on foot pedal 57 to rise to from neutral position Pn and steps on raise-position and put Pb1.Sewing machines 1 forbids that compress member 24 descends towards pressing position, remains in lifting position with compress member 24.41 work of clamp solenoid apply tension force to upper thread.Line applies under the state of tension force over there, and the operator can use analyzer to determine upper thread tension force.Sewing machines 1 can prevent operator's maloperation and make foot pedal 57 be positioned at sewing position.Because motor of sewing machine 9 does not drive, therefore, the operator can confirm upper thread tension force safely.
With reference to the flow chart of Fig. 7 driving force being set the control processing describes.The operator can at random set driving voltage in advance by guidance panel 66.Control device 60 arrives clamp solenoid 41 with drive voltage supply.
As operator during at guidance panel 66 operation driving force setting keys (not shown), CPU62 begins driving force and sets control and handle.
CPU62 judges whether the position of foot pedal 57 belongs to neutralization zone (S210).Do not belong in the position of foot pedal 57 under the situation of neutralization zone (S210: not), the CPU62 end process.
Belong in the position of foot pedal 57 under the situation of neutralization zone (S210: be), CPU62 reads in the data (S220) of driving voltage.The data of nonvolatile memory 65 storing driver voltages.The operator operates guidance panel 66, sets driving voltage (S230).CPU62 upgrades the data (S240) of the driving voltage of nonvolatile memory 65, and end process.
The wire-clamping device 30 of present embodiment is equivalent to clamp driving mechanism of the present invention.Compress motor 19 is equivalent to compress driving mechanism of the present invention.Motor of sewing machine 9, shank 10, eedle 11, shuttle 14 etc. are equivalent to the mechanism of making of the present invention.Foot pedal 57 is equivalent to operating equipment of the present invention.Potentiometer 55 is equivalent to test section of the present invention.The CPU62 that carries out S30, S40, S100～S150, S170, S180 processing is equivalent to control part of the present invention.Guidance panel 66 and driving force are set control and are equivalent to configuration part of the present invention.The processing of S90 is equivalent to judgement operation of the present invention.The processing of S180 is equivalent to control operation of the present invention.
Described as described above, the Sewing machines 1 of present embodiment judges whether the position of foot pedal 57 belongs to the drive area.Belong in the position of foot pedal 57 under the situation of drive area, Sewing machines 1 makes 41 work of clamp solenoid, and upper thread is applied tension force.Stepping on raise-position, to put that Pb1 is positioned at the operator be to make action and foot pedal 57 is gone up towards the side of stepping on position Pf2 operation in the opposite direction from neutral position Pn.Motor of sewing machine 9 does not drive, and Sewing machines 1 is not made action.Therefore, the operator can confirm upper thread tension force.
Be positioned in the position of foot pedal 57 under the situation of drive area, Sewing machines 1 forbids that compress motor 19 makes compress member 24 put movement from pressing position raise-position up.Because compress member 24 does not move to pressing position, therefore, pressing member 24 is the press surface line not.So, confirm the operator under the situation of upper thread tension force that Sewing machines 1 can prevent that compress member 24 from pressing upper thread and changing upper thread tension force.
The operator can operate foot pedal 57 with pin.The operator can carry out other operations with two hands when confirming upper thread tension force, therefore, can improve operating efficiency.
The present invention is not limited to above-mentioned embodiment, can carry out various changes.In the above-described embodiment, compress member 24 is mobile under the driving of compress motor 32.Also can utilize actuators such as cylinder that compress member 24 is moved.
In the above-described embodiment, when the position of foot pedal 57 is positioned at when stepping on position Pf1, compress member 24 is positioned at pressing position.The position that also can make compress member 24 changes according to the position of stepping on of foot pedal 57.
In the above-described embodiment, CPU62 obtains the position of stepping on of foot pedal 57 according to the detection voltage of potentiometer 55.CPU62 also can obtain the position of stepping on of foot pedal 57 according to the detected value of all places detecting sensor.
In the present embodiment, the operator at random sets the driving voltage that clamp solenoid 41 is driven in advance by guidance panel 66.ROM63 also can store the driving voltage data that clamp solenoid 41 is driven in each sewing program.Sewing program is the program that Sewing machines 1 is used for forming at processing cloth stitching.
Operating equipment of the present invention is not limited to foot pedal 57, also can be the manual switch of operator etc.
In the present embodiment, proportional solenoid changes the chucking power of a pair of clamp dish.Except proportional solenoid, can also adopt the actuator of other types such as pulse motor.
Claims (8)
1. Sewing machines comprises:
The clamp driving mechanism, this clamp driving mechanism changes the chucking power of a pair of clamp dish, and described a pair of clamp dish clamping upper thread also applies tension force to upper thread;
The compress driving mechanism, this compress driving mechanism drives the compress member, and described compress member will be processed cloth and press on needle plate;
Make mechanism, this is made mechanism and forms stitching at the described processing cloth that is pressed on needle plate by described compress member;
Operating equipment, this operating equipment can be to operate between the sewing position in the position that described processing cloth forms stitching in the described mechanism of making of the preoperative reference position of beginning and instruction;
Test section, this test section detects the operating position of described operating equipment; And
Control part, this control part is controlled described compress driving mechanism and described clamp driving mechanism according to the detected described operating position of described test section,
Detecting described operating position at described test section is positioned under the situation of described reference position, described control part is controlled described compress driving mechanism, be the separation point position so that described compress member is positioned at the position of leaving described needle plate, and described clamp driving mechanism is controlled, to remove the described chucking power of described a pair of clamp dish
It is characterized in that,
Described operating equipment can be operated towards activation point, and described activation point is to be positioned at and the position of going up in the opposite direction towards the side of described sewing position from described reference position,
Described control part comprises first control part, and this first control part is controlled described clamp driving mechanism, so that described test section detects described operating position when being positioned at described activation point, described a pair of clamp dish has described chucking power.
2. Sewing machines as claimed in claim 1 is characterized in that,
Described control part also comprises second control part, and this second control part is controlled described compress driving mechanism, so that described test section detects described operating position when being positioned at described activation point, described compress member is positioned at described separation point position.
3. Sewing machines as claimed in claim 1 is characterized in that,
Described operating equipment is that the operator can step on the foot pedal of operating and stepping on lift operations,
Described reference position is the position of operator's foot pedal when not operating foot pedal,
Described sewing position is the position that the operator has carried out stepping on foot pedal when operating,
Described activation point is the position of operator's foot pedal when having carried out stepping on lift operations.
4. as each described Sewing machines in the claim 1 to 3, it is characterized in that,
Described Sewing machines also comprises the configuration part, and the described chucking power of described a pair of clamp dish is set in this configuration part,
Detect described operating position at described test section and be positioned under the situation of described reference position, described chucking power can be set in described configuration part.
5. the control method of a Sewing machines, described Sewing machines comprises:
The clamp driving mechanism, this clamp driving mechanism changes the chucking power of a pair of clamp dish, and described a pair of clamp dish clamping upper thread also applies tension force to upper thread;
The compress driving mechanism, this compress driving mechanism drives the compress member, and described compress member will be processed cloth and press on needle plate;
Make mechanism, this is made mechanism and forms stitching at the described processing cloth that is pressed on needle plate by described compress member; And
Operating equipment, this operating equipment can be to operate between the sewing position in the position that described processing cloth forms stitching in the described mechanism of making of the preoperative reference position of beginning and instruction,
In the control method of described Sewing machines, described compress driving mechanism is controlled, make when the operating position of described operating equipment is positioned at described reference position, it is the separation point position that described compress member is positioned at the position of leaving described needle plate, and described clamp driving mechanism is controlled, make described a pair of clamp dish remove described chucking power
It is characterized in that, comprising:
Judge operation, judge in the operation that at this whether described operating position is positioned at activation point judges, described activation point is to be positioned at and the position of going up in the opposite direction towards the side of described sewing position from described reference position; And
The control operation in this control operation, is controlled described clamp driving mechanism, makes to be positioned under the situation of described activation point at described operating position that described a pair of clamp dish has described chucking power.
6. the control method of Sewing machines as claimed in claim 5 is characterized in that,
Described compress driving mechanism is controlled, made to be positioned under the situation of described activation point at described operating position that described compress member is positioned at described separation point position.
7. the control method of Sewing machines as claimed in claim 5 is characterized in that,
Described operating equipment is that the operator can step on the foot pedal of operating and stepping on lift operations,
Described reference position is the position of operator's foot pedal when not operating foot pedal,
Described sewing position is the position that the operator has carried out stepping on foot pedal when operating,
Described activation point is the position of operator's foot pedal when having carried out stepping on lift operations.
8. as the control method of each described Sewing machines in the claim 5 to 7, it is characterized in that,
Also comprise the setting operation, set in the operation at this, when described operating position is positioned at described reference position, can set the described chucking power of described a pair of clamp dish.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010215063A JP2012065965A (en) | 2010-09-27 | 2010-09-27 | Sewing machine and method for controlling sewing machine |
| JP2010-215063 | 2010-09-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102418244A CN102418244A (en) | 2012-04-18 |
| CN102418244B true CN102418244B (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110254073 Active CN102418244B (en) | 2010-09-27 | 2011-08-23 | Sewing machine and control method thereof |
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| JP (1) | JP2012065965A (en) |
| CN (1) | CN102418244B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5993287B2 (en) * | 2012-11-15 | 2016-09-14 | Juki株式会社 | sewing machine |
| CN105316875B (en) * | 2014-08-04 | 2019-12-06 | Juki株式会社 | Sewing machine |
| JP2020074995A (en) * | 2018-11-09 | 2020-05-21 | Juki株式会社 | Zigzag stitch sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62106796A (en) * | 1985-11-05 | 1987-05-18 | ブラザー工業株式会社 | Cloth presser lifting and falling apparatus of sewing machine |
| JP4010629B2 (en) * | 1998-03-05 | 2007-11-21 | Ｊｕｋｉ株式会社 | Sewing thread tension device |
| JP2008036192A (en) * | 2006-08-08 | 2008-02-21 | Brother Ind Ltd | Thread tension guide of sewing machine |
| JP2008079974A (en) * | 2006-09-28 | 2008-04-10 | Brother Ind Ltd | Pattern sewing machine |
| US7617786B1 (en) * | 2008-05-11 | 2009-11-17 | Hsien-Chang Tseng | Pressure adjustment structure for a presser foot of a sewing machine |
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| CN102418244A (en) | 2012-04-18 |
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