CN1114372A - Drive device for a sewing machine - Google Patents
Drive device for a sewing machine Download PDFInfo
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- CN1114372A CN1114372A CN94119955A CN94119955A CN1114372A CN 1114372 A CN1114372 A CN 1114372A CN 94119955 A CN94119955 A CN 94119955A CN 94119955 A CN94119955 A CN 94119955A CN 1114372 A CN1114372 A CN 1114372A
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- control stick
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- suture needle
- actuator
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- 238000009958 sewing Methods 0.000 title claims abstract description 55
- 230000007935 neutral effect Effects 0.000 claims description 43
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000011664 signaling Effects 0.000 claims description 13
- 230000004913 activation Effects 0.000 claims description 9
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- 230000005611 electricity Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 31
- 238000010168 coupling process Methods 0.000 description 31
- 238000005859 coupling reaction Methods 0.000 description 31
- 230000000994 depressogenic effect Effects 0.000 description 6
- 238000010304 firing Methods 0.000 description 6
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- 230000008859 change Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
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- 230000015572 biosynthetic process Effects 0.000 description 2
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- 230000009471 action Effects 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 230000002687 intercalation Effects 0.000 description 1
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- 238000007634 remodeling Methods 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/14—Devices for changing speed or for reversing direction of rotation
- D05B69/18—Devices for changing speed or for reversing direction of rotation electric, e.g. foot pedals
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/22—Devices for stopping drive when sewing tools have reached a predetermined position
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
A drive device for a sewing machine which reducess the switching time between a driving position and a stop position has a main motor with a clutch for rotating the sewing machine shaft at a first speed, an auxiliary motor for rotating the shaft at a second speed which is slower than the first speed, and control means for selectively transfering the speed of one of the motors to the sewing machine shaft. The control means includes an actuator and means for transmitting a position of the actuator to a gearing of a clutch lever of the motor with a clutch. The transmitting means has a first lever connected with the actuator, a second lever connected with the first lever, and a resilient member connecting the first and second levers.
Description
The present invention relates to a kind of Sewing machines drive unit, more particularly, relate to the improvement to a kind of like this drive unit, this drive unit is rotated with the main shaft that low speed orders about on the Sewing machines with high speed with by an auxiliary motor by a clutch motor.
The Sewing machines drive unit of this type is open by the clear 53-17468 of the uncensored utility model communique of Japan (OPI) (" OPI " means " uncensored application " herein).In its drive unit, auxiliary motor is coupled on the main shaft of Sewing machines.Pedal is directly connected on the one control lever by a bar, and this control stick is corresponding to a clutch lever that is used for clutch motor.
Conventional drive unit is slower for the reaction that is transformed into stop position from activation point.Control stick (being clutch lever) is directly connected on the pedal, makes control stick work by trampling pedal, and this mode causes slower conversion time.
In addition, even the control stick of conventional drive unit has the spring of control stick being pushed to stop position, this feature also is difficult to improve conversion performance separately.
The purpose of this invention is to provide a kind of Sewing machines and drive machine, it can reequip the conversion time that is transformed into stop position from activation point.
Other purposes of the present invention and advantage are partly proposed in the following description and can partly be found out in the following description, perhaps can learn by implementing the present invention.Device that objects and advantages of the present invention can be specifically noted by claims and combination realize and obtain.
In order to realize purpose of the present invention, as this paper embody and as described in, Sewing machines drive unit of the present invention comprises: a clutch motor that has a clutch operating lever, this clutch operating lever has an activation point, a neutral position, with a stop position, the motor of this band clutch rotates the axle of Sewing machines with first speed; One to rotate the auxiliary motor of the axle of Sewing machines less than the second speed of first speed; And be used for selectively passing to the control device of the axle of Sewing machines with the rotating speed of one of the motor of clutch and auxiliary motor.This control device comprises: an actuator, this actuator have a neutral position, and a plurality of preceding gears are put with a plurality of backs gear and put; With the transmission device that is used for the position of actuator is passed to clutch lever, this transmission device has first control stick that is connected with actuator, second control stick that is connected with first control stick, this second control stick moves a distance that is directly proportional with first control stick, with a flexible member, this flexible member is connected second control stick with first control stick, and actuator in the past gear put to move on to and force clutch motor to shift to stop position when the back gear is put.
The accompanying drawing that is combined in the present specification and constitutes a present specification part shows some embodiment of the present invention, and has explained purpose of the present invention, advantage and principle with specification.In the accompanying drawing:
Fig. 1 is the perspective view that disposes the Sewing machines of the Sewing machines drive unit example that constitutes first embodiment of the invention;
Fig. 2 is that the schematic diagram analysed and observe has been made in a width of cloth part, shows Sewing machines drive unit of the present invention;
Fig. 3 is a perspective view, shows a side of the transmission device in the Sewing machines drive unit of the present invention;
Fig. 4 is a perspective view, shows the another side of transmission device shown in Figure 3;
Fig. 5 is that the side view analysed and observe has been made in the part, shows clutch motor and auxiliary motor;
Fig. 6 A is a front view, shows the situation that is connected of clutch motor and auxiliary motor;
Fig. 6 B is an enlarged drawing, shows the part of an one-way clutch;
Fig. 7 is the amplification view of this one-way clutch;
Fig. 8 is a block diagram, shows the connection situation of control device;
Fig. 9 is a flow chart, is used to illustrate the low speed sewing operation of Sewing machines drive unit of the present invention;
Figure 10 is a flow chart, is used for explanation and mentions position or suture needle in suture needle and fall the position and make the out-of-work operation of suture needle.
Figure 11 is a flow chart, is used to illustrate the secant operation of Sewing machines drive unit of the present invention;
Figure 12 is a perspective view, shows the second embodiment of the invention corresponding to Fig. 3;
Figure 13 is a perspective view, shows the third embodiment of the invention corresponding to Fig. 3;
Figure 14 is a perspective view, shows the fourth embodiment of the invention corresponding to Fig. 3;
Figure 15 is a cutaway view, shows the connection of first and second control sticks among the 4th embodiment shown in Figure 14.
Below with reference to accompanying drawings preferred embodiment of the present invention is described.
Fig. 1 and 2 shows a Sewing machines drive unit, and it constitutes first embodiment of the invention.As illustrated in fig. 1 and 2, this drive unit has a clutch motor 1 and an auxiliary motor 2.Clutch motor 1 with the main shaft 4 of high speed rotating Sewing machines 3 to carry out normal sewing operation.Auxiliary motor 2 is with the main shaft 4 of the Sewing machines that slowly runs, for example, so that stop suture needle in the position of needs.
As shown in Figure 2, clutch motor 1 comprises: 30, one of rotor as the driving element of motor 1 is fixed on the brake block 31 on the shell 20 of motor 1; With a clutch disk 32, this clutch disk is placed between rotor 30 and the brake block 31 by this way, it can be moved so that contact with brake block 31 or rotor 30.Clutch motor 1 has: an activation point contacts with rotor 30 at this position clutch dish 32; A stop position contacts with brake block 31 at this position clutch dish 32; With a neutral gear position, in this position, clutch disk 32 neither contacts also with rotor 30 and does not contact with brake block 31.Clutch disk 32 has been installed on the end of clutch shaft 33 of driving shaft effect of clutch motor.The middle part of clutch shaft 33 by suitable bearing 35 and 35 ' supporting so that clutch shaft can rotate and can not move axially with respect to bearing 34.As shown in Figure 5, bearing 34 is levels, (looking from Fig. 5) is slidably, and be subjected to rabbeting bearing 35 and 35 on the shell 20 of clutch motor 1 ' supporting, so that moving axially, clutch shaft 33 can be in above-mentioned three positions, i.e. activation point, neutral position and stop position.
Article one, endless belt 44 is fixedly mounted in driven pulley 43 operations on the main shaft of Sewing machines around driving pulley 40 and one.Driving pulley 40 and driven pulley 43 are V-shaped belt pulleys, and endless belt 44 is V-shape belts.
In this preferred embodiment, driven sprocket 41 is coupled to a drive sprocket 51 on the driving shaft 50 that is fixedly mounted in auxiliary motor 2 by a synchronous belt 52.The effective diameter of driven sprocket 41 is greater than drive sprocket 51.The advantage of doing like this is that the driving torque of the clutch of auxiliary motor can increase, and this can help to improve operating cost.
When clutch motor 1 was in activation point, clutch disk 32 contacted with rotor 30, and clutch shaft 33 then is rotated and makes the main shaft 4 of Sewing machines be rotated by driving pulley 40 and endless-belt 44.
The rotation of auxiliary motor 2 is by drive sprocket 51, and synchronous belt 52, driven sprocket 41 and one-way clutch 42 are transmitted so that rotate clutch shaft 33.The rotation of clutch shaft 33 is by driving pulley 40, and endless-belt 44 and driven pulley 43 are transmitted so that rotate the main shaft 4 of Sewing machines.In this operation, the rotation of clutch motor 1 is stoped by one-way clutch 42 to the transmission of driven pulley 41.
As described above, the effect of one-way clutch 42 is to prevent that the rotation of clutch motor 1 is to auxiliary motor 2 transmission.One-way clutch 42 comprises the lining 60 and the outer cylinder 61 that is sleeved on rotationally on this lining 60 that are nested on the clutch shaft 33.Driven sprocket 41 is nested on this outer cylinder 61 and is fixed on this outer cylinder 61 with suitable means.Shown in Fig. 6 B, on the excircle of lining 60, be formed with a plurality of triangular incision 62 with equi-angularly space, thereby formation triangle space, each triangle space include a narrower space 70 and a broad space 71 between the external cylindrical surface of the inner cylinder face of outer cylinder and lining 60.In each triangle space, shown in Fig. 6 B, like that respectively be provided with a roller 63, this roller is subjected to 64 pushings of a spring.
Driving pulley 40, one-way clutch 42 and driven sprocket 41 can be installed on the clutch 33 and need not clutch 33 is changed.Originally, have only driving pulley to be sleeved on the clutch shaft 33 with key pin device 42a, it is securely fixed on the clutch shaft 33 at the screw rod 42b that forms on the end face of clutch shaft with a nut 42c and one.On the other hand, in the present invention, as shown in Figure 7, adopted a dimple on the driving pulley 40, key pin device and a screw rod that on clutch shaft 33, forms, this screw rod is connected with a nut.
When driven sprocket 41 by auxiliary motor 2 when the direction of dotted arrow D is rotated, shown in Fig. 6 B, the outer cylinder 61 of one-way clutch 42 is rotated to same direction, makes roller 63 be positioned in the narrower space 70, and lining 60 is rotated to same direction with outer cylinder 61.Like this, the clutch shaft 33 that is coupled on this lining 60 by key pin just rotates with lining 60.Driven sprocket 41 makes clutch shaft 33 rotate (shown in dotted line) to same direction to the rotation of arrow D direction.
When clutch shaft 33 was rotated by clutch motor 1 direction shown in the dotted line in Fig. 6 B, lining 60 rotated with clutch shaft 33, and the elastic force that makes roller 63 overcome spring 64 is positioned in the space 71 of broad.Therefore, the rotation of lining can not pass to outer cylinder 61, and the rotation of clutch motor 1 can not pass to driven sprocket 41 yet.
When auxiliary motor 2 rotated, clutch motor 1 was in neutral position.Clutch disk 32 does not contact with brake block 31 (back will be described in detail) with rotor 30.
A clutch lever setting is come mobile clutch disk 32 and bearing 34, so that clutch motor is in activation point, and neutral position, or stop position.
Shown in Fig. 2 and 5, clutch lever 100 is L shaped basically, and it has a vertical component 101 and one from these vertical component 101 extended horizontal components 102.As shown in Figure 5, be coupled on the shell 20 of clutch motor 1 rotationally by an axle 103 at the middle part of vertical component 101.A coupling pin 104 is coupled on the end of clutch lever 100, for example the end of upright lever.Coupling pin 104 has a pin 105, this pin head smoothly intercalation in a hole 34a who on bearing 34, forms.At the other end of clutch lever 100, i.e. move to the direction of solid arrow 106 end of the horizontal component 102 of clutch lever 100, and bearing 34 and clutch shaft 33 are moved to the left as shown in Figure 5.Thereby clutch disk 32 is moved to rotor 30.On the contrary, when the end of horizontal component 102 when the direction of dotted arrow 107 moves, bearing 34 and clutch shaft 33 move right as shown in Figure 5, and clutch disk 32 is moved to brake block 31.Fig. 5 shows the clutch disk 32 that is meshing with brake block 31.
In Fig. 2 and 5, what label 108 indicated is a clutch lever back-moving spring, and this spring is pushing clutch lever 100 so that by clutch lever 100 clutch disk 32 is contacted with brake block 31.This clutch lever 100 is coupled on the control device.The functioning example of this control device is rotated so that carry out various sewing operations as making clutch motor 1 and auxiliary motor 2.
In a preferred embodiment, this control device comprises transmission device 200 and actuator 201 that is coupled on this transmission device 200 that is connected on the clutch lever 100.In this embodiment, actuator 201 is pedals.Be similar to the pedal of common Sewing machines, the middle part of pedal is rotatably supported on the leg of Sewing machines by an axle 201a.Pedal can step by operator's foot and swing to a plurality of before gears put neutral gear (release) position and a plurality of backstops position.Be meant on the foot-operated presser feet pedal with the meaning of herein term " preceding shelves " and be positioned at a front portion of 201a front side.Similarly, the meaning of usefulness term " backstop " herein is meant on the foot-operated presser feet pedal and is positioned at the rear portion of surveying behind the 201a.Shelves and back gear were put actuating before pedal was shown in shown in Fig. 2 dotted line or as arrow among Fig. 3.
As shown in Figure 3, an end of first control stick 301 is rotatably supported on the installing plate 305 by an axle 306, and then be coupled on the pedal 201 by first coupling bar 300 its other end.An axle 307 is fixed to the middle part of first control stick 301 near on the position of these control stick 301 other ends.As shown in Figure 4, securing like this axle 307 is connected to one on the arc line of rabbet joint 308 that forms on the installing plate 305.Second control stick 303 is arranged to and is arranged essentially parallel to first control stick 301, and one end thereof is rotatably supported on the installing plate 305 by an axle 309.As the situation of first control stick 301, an axle 310 is fixed to the position of the middle part of second control stick 303 near the other end of this second control stick 303, and is connected on the arc line of rabbet joint 311 that forms on the installing plate 305 similarly.When swinging on the direction of pedal arrow in Fig. 3, first and second control sticks 301,303 are swung around axle 306 and 309 respectively on the direction of arrow.First and second control sticks are coupled together by a coupling mechanism so that they can move certain distance mutually.Coupling mechanism is designed to following form: an end of coupling lever 302 is installed in rotation on one on the axle 312 that forms on second control stick 303, and on the other end of coupling lever 302, be formed with a line of rabbet joint 313 by this way, make this line of rabbet joint longitudinally be elongated from this coupling lever 302, a pin 314 that is fixed on first control stick 301 is being engaged by this elongated line of rabbet joint 313.Shown in Fig. 2 and 3, first control stick 301 is coupled on second control stick 303 by a flexible member, and this flexible member is an extension spring 315 in this preferred embodiment.An end of second coupling bar 304 is connected on the end of second control stick 303.The other end of second coupling bar 304 is connected on the horizontal component 102 of clutch lever 100.
When moving down when carrying out the front operation under the situation of lower end of the line of rabbet joint 313 that is in coupling lever 302 at pin 314 so that with first coupling bar 300, first control stick 301 as shown in Fig. 2 and 3 to lower swing, the lever 302 that is coupled simultaneously moves down as shown in Figure 2, and second control stick 303 is to lower swing.When second control stick 303 was swung in this way, second coupling bar 304 moved down, and made horizontal component 102 move to the solid arrow direction.Therefore, clutch disk 32 just moves to rotor 30 from position shown in Figure 5, moves to neutral position from stop position thus.As shown in Figure 1, an outer cover 350 is fixed firmly on the installing plate 305 so that the parts that will be installed on the installing plate 305 cover.
Control device also includes the auxiliary motor switching device 400 that is used to start auxiliary motor 2; Be used to start the clutch motor switching device 500 of clutch motor 1; Be used for suture needle is set in needed locational pin position positioner 600; With a secant device starting device 700; And control circuit 800.
In this preferred embodiment, auxiliary motor switching device 400 comprises an auxiliary motor firing switch 401.Auxiliary motor firing switch 401 is arranged to its movable contact chip (or tongue piece) 401a is stirred by first the moving of control stick 301, and makes switch realize the operation of opening and closing.Auxiliary motor firing switch 401 is fixed on the installing plate 305.
Clutch motor switching device 500 comprises a sychronisation 501, and this sychronisation 501 is installed on the main shaft of Sewing machines by this way, makes it be adjacent to driven pulley 43.Sychronisation 501 can detect the rotating speed of Sewing machines and the position of suture needle.
Shown in Fig. 2 to 4, suture needle positioner 600 has a neutral gear actuator 601 and one first suture needle positioning switch 602.Secant device starting device 700 has one second suture needle positioning switch 603 and a safe actuator 604.Neutral gear actuator 601, the first and second suture needle positioning switches 602 and 603 and safe actuator 604 all be installed in the side of installing plate 305, this side is with respect to the side that is provided with transmission device 200.
Neutral gear actuator 601 has a driving shaft 601a, and this driving shaft 601a is coupled to an end of a neutral gear lever 605.The other end of neutral gear lever 605 is passed in the opening 606 that forms on the installing plate 305 by this way, so that collide with the top edge of second control stick 303.Neutral gear lever 605 is rotatably supported on the installing plate 305 by an axle 608.When the neutral gear actuator started, promptly when its driving shaft 601a of location was drawn out (withdrawal) as shown in Figure 4, the other end of neutral gear lever can deflect so that promote second control stick 303 downwards.In Fig. 4, label 609 indicates is a back-moving spring on the axle 608 that is installed in neutral gear lever 605.But the end of the movable contact spring of the first suture needle positioning switch 602 (tongue piece) 602a is set in the top edge of first control stick 301, as shown in Figure 3.
Safe actuator 604 has a driving shaft 604a.A safety pin 610 is fixed on the end of driving shaft 604a, and extends being substantially perpendicular on the direction longitudinally of driving shaft 604a.An end of safety pin 610 is passed on the installing plate 305 a strip shape opening 611 that forms, and where necessary, it is a motion below the extended projection and stretching section 612 from the middle part of first control stick 301.Therefore, in driving shaft 604a when withdrawal of the safe actuator 604 of location as shown in Figure 4, safety pin 610 is moved below the projection and stretching section 612 of first control stick 301 so as to limit first control stick 301 to lower swing.
In Fig. 4, label 613 indicates is a back-moving spring on the driving shaft 604a that is installed in safe actuator 604.Secant device starting device 700 comprises a secant spiral pipe 700a and a secant ratchet 701.This secant spiral pipe 700a handles the secant device.This secant ratchet 701 as shown in Figure 4, comprises a lever that takes the shape of the letter U basically 703, and this U-shaped lever 703 is installed in rotation on the installing plate 305 by an axle 702.An end of lever 703 is the first arms 705 that pass an opening 704 that forms on installing plate 305.The end of this first arm 705 is set in the top edge of first control stick 301.Lever 703 also comprises one second arm 706, and this second arm 706 is arranged to aim at the moving contact 707 of the second suture needle positioning switch 603.
Fig. 8 is a block diagram, shows the deployment scenarios of control circuit 800.Control circuit comprises that 801, one of CPU (central processing unit) are connected to motor driver 802 and the spiral pipe driver 803 that is connected on the CPU801 on the CPU801.Motor driver 802 control auxiliary motors 2, spiral pipe driver 803 control secant spiral pipes.CPU801 and auxiliary motor firing switch 401, the first and second suture needle positioning switches 602 and 603, and other switch is continuous, as shown in Figure 8.
Rotating speed changing device 805 changes the rotating speed of auxiliary motor.In the Sewing machines of clutch motor is housed,, will change the diameter of the belt pulley of clutch motor in order to change the rotating speed of machine spindle.Using auxiliary motor to come to change the rotating speed of the machine spindle that drives by auxiliary motor in the Sewing machines of driving shaft of rotating band clutch motor.Therefore, using the purpose of transformation of speed device is exactly electrically to control the rotating speed of auxiliary motor according to the variation of belt pulley on diameter of clutch motor.In a preferred embodiment, the transformation of speed device is an anti-dazzle pedal switch 806 as shown in Figure 8; But, controller can be according to the program work of CPU801.
The running of Gou Zao Sewing machines drive unit will be described in conjunction with the running that Sewing machines is finished according to foot-operated action of pulling like this.
Shown in Fig. 2 and 5, when gear was put before pedal is in first, the front portion of pedal was depressed slightly in neutral position, thus actuating transmission device 200.As mentioned above, first control stick 301 to lower swing, makes the horizontal component 102 of clutch lever 100 by coupling lever 302, second control stick 303 and second coupling bar 304 by first coupling bar 300, and solid arrow is directed downwards motion in Fig. 5.As a result, clutch disk 32 moves to neutral position from stop position shown in Figure 5.Therefore, can rotate the main shaft 4 of Sewing machines with hand.In this respect, notice that auxiliary motor firing switch 401 do not open.
When pedal was in the second front position, the front portion of pedal further was depressed, and auxiliary motor firing switch 401 is opened, thereby ordered about the main shaft 4 of auxiliary motor with the Sewing machines that slowly runs.
Fig. 9 is the flow chart that is used to illustrate the low speed sewing operation.
After pedal is being set at the second front position, be set at the 3rd front position again, and the front portion of pedal is when being depressed further, transmission device 200 just with its response pedal first before shelves and the same manner running of running.As a result, clutch disk 32 is moved toward activation point, makes it be urged on rotor 30.Clutch shaft 33 is passed through in the rotation of clutch motor, driving pulley 40, and endless-belt 44 and driven pulley 43 are passed to the main shaft 4 of Sewing machines, make Sewing machines with high speed rotating.This high speed rotating is used for normal sewing operation.
When surpassing predetermined value at a high speed, sychronisation 501 can detect it, rotates so that stop auxiliary motor.Auxiliary motor is adjusted into predetermined value or lower with the rotating speed of main shaft, and for example per minute 300 changes or be littler---and for example per minute 170 changes.This can reduce the kinetic equation loss of auxiliary motor, and increases service life of a machine.
So that pedal when being in neutral position (or off-position), first coupling bar 300 is pushed upwardly when in the 3rd front position the rear portion of pedal being depressed, and first control stick 301 is upwards swing then.In this actuating, the upwards swing of first control stick 301 does not pass to second control stick 303 immediately.This is because the cause of the line of rabbet joint 313 that forms on the other end of coupling lever 302.When the amount of moving up of first control stick 301 during greater than the length of the line of rabbet joint 313, second control stick 303 is pushed upwardly.When first control stick was promoted by the line of rabbet joint along the coupling lever, extension spring was stretched.
When second control stick 303 is pushed upwardly, second coupling bar 304 is pushed upwardly, make the horizontal component 102 of clutch lever 100 on the direction of dotted arrow, be pushed upwardly as shown in Figure 5, and clutch disk 32 is pushed the right side to by the elastic force of clutch lever back-moving spring 108, thereby is urged on brake block 31 (at the stop position of clutch motor).As a result, clutch motor 1 is shut down.Under this state, suture needle is in unsettled stop position.
When pedal is adjusted to the first backstop position, promptly when the pedal rear portion when neutral position is depressed with pin, first coupling bar 300 is pushed upwardly, first control stick 301 is upwards swing then.But the result makes the top edge of the control stick 301 of winning contact with the movable contact spring 602a of the first suture needle positioning switch 602, thereby connects the first suture needle positioning switch 602.At the same time, sychronisation 501 detects the position of suture needles, mentions the position then also starts neutral gear actuator 601 if suture needle is in suture needle.When the driving shaft 601a of neutral gear actuator 601 withdrawal, neutral gear lever 605 is made second control stick 303 to lower swing by actuating.In this operation, second control stick 303 do not pass to first control stick 301 to lower swing because first control stick 301 moves along the line of rabbet joint 313 that forms on coupling lever 302.Second coupling bar 304 being promoted downwards of second control stick 303 to lower swing, make the horizontal component 102 of clutch lever 100 move down, the clutch disk 32 that to locate as shown in Figure 5 thus is pushed to the left side, makes clutch motor be positioned at neutral position.
When clutch motor was on the neutral position in the above described manner, auxiliary motor 2 was with the machine spindle 4 that slowly runs.Then, sychronisation 501 detects the position of suture needles, and is in suture needle and sends a suture needle when position is fallen in suture needle and fall position signalling.Low suture needle position signalling makes neutral gear actuator 601 and auxiliary motor 2 motionless (closing).The result makes neutral gear lever 605 impel it to turn back to initial position by back-moving spring 609 so that discharge second control stick 303, makes second control stick 303 impel its upwards swing by extension spring 315 thus.When second control stick 303 was swung in this way, second coupling bar 304 was pushed upwardly with the horizontal component 102 that lifts clutch lever 100, so that clutch disk 32 is promoted to the right, as shown in Figure 5, was about to clutch disk and pressed against on the brake block 31.As described above, the elastic force of clutch lever back-moving spring 108 and extension spring 315 is used to clutch disk 32 is pressed against on the brake block 31 so that stop auxiliary motor.The elastic force of clutch lever back-moving spring 108 and extension spring 315 can make clutch disk contact with brake block effectively.Like this, clutch shaft 33 is fixed, and machine spindle 4 and auxiliary motor 2 are stopped.
When pedal is in the first back gear when putting, auxiliary motor is with the machine spindle that slowly runs, and is in suture needle and stops operating when the position is fallen in suture needle.Suture needle can be fallen the position in suture needle and be stopped.In addition, mention and fall position selector switch 806 by a suture needle, suture needle can be parked in suture needle in the same way and mention on the position.
When the end that is in the pedal of (corresponding to the high speed rotating of Sewing machines) on the second backstop position is depressed repeatedly, when pedal is set on the second backstop position, first control stick 301 is by the first upwards swing of coupling bar 300, the suture needle positioning switch 602 of winning is opened, and when being pushed down, lifts on second arm 706 of secant ratchet 701 the first arm 705 of secant ratchet 701, so that depress the moving contact of the second suture needle positioning switch 603, and connect the second suture needle positioning switch 603.
In the case, the safe actuator 604 of control circuit 800 startings, make the driving shaft 604a of safe actuator overcome the elastic force of back-moving spring and withdraw, so that safety pin 610 is in below the projection and stretching section 612 of first control stick 301 to prevent that first control stick 301 is to lower swing.Trampling moves down because of the front portion of pedal is subjected to unintentionally with regard to having prevented first control stick for this.Resetting of pedal makes extension spring 315 have certain active force, and this active force is used to clutch disk is pressed against on the brake block in the above described manner.
When the safe actuator 604 of starting, sychronisation 501 sends suture needle and falls position signalling.Fall position signalling according to suture needle, starting neutral gear actuator 601.At this moment driving shaft 601a is contracted, so that neutral gear lever 605 is driven and make its end to lower swing second control stick 303.In this operation, second control stick 303 do not pass to first control stick 301 to lower swing because first control stick 301 is pushed along form the line of rabbet joint 313 on coupling lever 302.Therefore second coupling bar 304 being promoted downwards to lower swing of second control stick 303 make the horizontal component 102 of clutch lever 100 be pushed down.The clutch disk 32 that the result will locate as among Fig. 5 promotes left, makes clutch motor 1 be in neutral position.
When clutch motor 1 was in neutral position, auxiliary motor 2 was with the machine spindle 4 that slowly runs.Then, sychronisation 501 detects the suture needle position, and sends suture needle and fall position signalling when the position is fallen in suture needle arrival suture needle.Fall position signalling according to suture needle, control circuit starting secant spiral pipe is so that cut off suture with the secant device.Secant operation can be carried out during with driven at low speed at Sewing machines.After secant operation, sychronisation 501 detects suture needle and is in suture needle and mentions the position, and sends suture needle and mention position signalling.Mention position signalling according to suture needle, control circuit can make machine spindle 4 stop operating, suture needle this moment is in suture needle and mentions the position, for example makes secant spiral pipe degradedness in 20 milliseconds (timer), and is not for example activating safe actuator 604 in 60 milliseconds (timer).Figure 10 is used to illustrate make suture needle be parked in that the position is mentioned in suture needle and the flow chart of the operation of position is fallen in suture needle.Figure 11 is the flow chart that is used to illustrate the secant operation.
Mention position signalling according to suture needle, make neutral actuator 601 and auxiliary motor 2 all motionless.The driving shaft 601a of neutral gear actuator 601 is released by the elastic force of back-moving spring 609.The result makes and 605 swings of neutral gear lever causes its other end to leave second control stick 303.Therefore, second control stick 303 makes its upwards swing by the elastic force of extension spring 315, lifts the horizontal component 102 of clutch lever 100 thus by second coupling bar 304.As previously described, clutch disk 32 is pushed to the right of Fig. 5, makes it push brake block 31.The elastic force of clutch lever back-moving spring 108 and extension spring 315 helps contacting of clutch disk and brake block.The result makes auxiliary motor stop, and mentions the position and suture needle is parked in suture needle.Subsequently, the actuating pedal makes it be in neutral position, makes the control stick 301 of winning to lower swing with make secant ratchet 701 be returned to its initial position.
Figure 12 shows the second embodiment of the present invention.Figure 13 illustrates the third embodiment of the present invention.Figure 14 and 15 shows the fourth embodiment of the present invention.In Figure 12 to 15, therefore those parts of the parts that its function had been described corresponding to first embodiment of the invention indicate with same label or the label that indicates " ' ".
It is as described below that second embodiment shown in Figure 12 is different from the details of first embodiment.First control stick 301 is in second control stick, 303 ' below.Extension spring 315 ' be enclosed within on the bar 900.The bottom of bar 900 be securely fixed in first control stick 301 ' top edge, its upper end then loosely is embedded in the hole 901 that forms on the lug, this lug be from second control stick 303 ' lower limb stretch out.
It is as described below that the 3rd embodiment shown in Figure 13 is different from the details of first embodiment.First control stick 301 ' be rotatably supported on the end of same bolster 902 with second manipulation 303 ' all.
It is as described below that the 4th embodiment shown in Figure 14 and 15 is different from the details of first embodiment.First control stick 301 ' overlay, second control stick 303 ', and two control sticks are extended on vertical direction.First and second control sticks 301 ', 303 ' both is bearing on the end of supporting lever 903 of a horizontal positioned.
The other end of supporting lever 903 then is installed in rotation on the installing plate 305 by an axle 904.
First control stick 301 ' two ends be formed with the line of rabbet joint 905 and a following line of rabbet joint 906 on one.
Second control stick 303 ' the bottom be formed with a hole 907, its positioned adjacent first control stick 301 ' the following line of rabbet joint 906.In addition, second control stick 303 ' on be formed with a line of rabbet joint 908, its position above the hole 907 and adjoin first control stick 301 ' on the line of rabbet joint 905.One first bolt 909 insert first control stick 301 ' the last line of rabbet joint 905 and second control stick 303 ' the line of rabbet joint 908 in.One second bolt 910 insert first control stick 301 ' the following line of rabbet joint 906 and second control stick 303 ' hole 907 in.
First and second bolts, 909,910 difference of inserting like this are nut 911 and 912 vis-a-vis, so that with the first and second control stick fix in position, just they are stacking mutually slidably.
First and second bolts 909 and 910 are coupled by extension spring 315.
Second, third and the 4th embodiment are with the mode actuating same with first embodiment.
In above-mentioned these embodiment, the moment of torsion of clutch motor passes to machine spindle by pulley assembly, and the moment of torsion of auxiliary motor passes to machine spindle by chain wheel assembly.But, the present invention is not limited to this respect.For example, pulley assembly and chain wheel assembly can install with other, and for example gear assembly replaces.
The elastic force of flexible member is returned to stop position to clutch lever and exerts pressure.The present invention can rapidly and fully be adjusted to clutch motor on the stop position.
Description to preferred embodiment of the present invention is for diagram and illustrative purposes fully above.Rather than will carry out exhaustive argumentation or the present invention is limited to disclosed precise forms and various modification, and desired change when enforcement is of the present invention to the present invention.Embodiment selected here and that described is so that apply the present invention among each embodiment and the various changes that its work are suitable for certain specific use for the principle of interpretation technique.Scope of the present invention is limited by claims and equivalent embodiment thereof.
Claims (2)
1. drive unit that uses for Sewing machines, described drive unit comprises:
A clutch motor that includes a clutch lever, this clutch separation have an activation point, a neutral gear position and a stop position, and described clutch motor rotates a sewing arbor with first speed;
One is rotated the auxiliary motor of this sewing arbor with second speed, and described second speed is less than described first speed; With
Be used for selectively the rotating speed of one of described clutch motor and described auxiliary motor being passed to the control device of this sewing arbor, described control device comprises:
An actuator, this actuator have a neutral position, a plurality of before gears put with a plurality of backstops position and
Be used for the position of described actuator is passed to the transmission device of described clutch lever, described transmission device has first control stick that is connected with described actuator, second control stick that is connected with described first control stick, described second control stick moves certain distance with respect to described first control stick, and flexible member, described flexible member is connected described second control stick with described first control stick, force described clutch motor to enter described stop position at described actuator described flexible member when described front position moves to described backstop position.
2. drive unit that uses for Sewing machines, described drive unit comprises:
A clutch motor, it is used for rotating the sewing arbor with first speed, so that one be connected to clutch disk on this Sewing machines through clutch lever rotor of contact be used for by described clutch disk being pressed against stop the to sew rotation of arbor of a mode on the brake block;
An auxiliary motor, it is connected on the drive part that is rotated by an one-way clutch by described clutch motor, is used for rotating the sewing arbor with second speed, and described second speed is less than described first speed;
A pedal that is connected on the described clutch lever, shelves operation before described pedal can be done, one first backstop operation and one second backstop operation;
One first control stick, an end of described first control stick is connected on the described pedal;
One second control stick, an end of described second control stick is connected on the described clutch lever;
A bindiny mechanism that is between described first control stick and described second control stick, described bindiny mechanism the rotation of described first control stick is passed to described second control stick, and stop the rotation of described second control stick to pass to described first control stick;
A flexible member that is arranged between described first control stick and described second control stick, described flexible member passes to described backstop operation with the motion of a pedal from described preceding shelves operation;
The neutral gear actuator of described second control stick of actuating is used for making when described neutral gear actuator activated the described clutch disk of described clutch motor to be in described neutral position;
One first suture needle positioning switch is used for described first backstop operation according to described pedal and produces one and stop at and fall locational signal;
One second suture needle positioning switch is used for buying property according to the described second back gear of described pedal and gives birth to one and stop at and mention locational signal;
A sychronisation is used for sending according to the rotation of the main shaft of Sewing machines that position signalling is mentioned in a suture needle and position signalling is fallen in a suture needle;
A control circuit, be used for receiving from what the described first suture needle positioning switch was sent and describedly use described neutral gear actuator when stopping at the signal of falling the position and drive described auxiliary motor at described control circuit, receive at described control electricity and to stop described auxiliary motor when position signalling is fallen in the described suture needle of sending from described sychronisation, receive described the stopping at of sending at described control circuit and drive described auxiliary motor when mentioning locational signal, and receive at described control circuit and to stop using described neutral gear actuator and described auxiliary motor is stopped when position signalling is mentioned in the described suture needle of sending from described sychronisation from the described second suture needle positioning switch.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5355280A JPH07194885A (en) | 1993-12-28 | 1993-12-28 | Driving device of sewing machine |
| JP355280/93 | 1993-12-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1114372A true CN1114372A (en) | 1996-01-03 |
Family
ID=18443008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94119955A Pending CN1114372A (en) | 1993-12-28 | 1994-12-28 | Drive device for a sewing machine |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH07194885A (en) |
| KR (1) | KR950018799A (en) |
| CN (1) | CN1114372A (en) |
| DE (1) | DE4446808A1 (en) |
| GB (1) | GB2285272A (en) |
| IT (1) | IT1274989B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451293B (en) * | 2007-12-07 | 2012-12-05 | Juki株式会社 | Pedal device of sewing machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2890116Y (en) * | 2006-02-15 | 2007-04-18 | 刘桂英 | Stitching machine and production line composed of stitching machine |
| CN103966781A (en) * | 2014-05-07 | 2014-08-06 | 佘峰 | Pedal device of numerically-controlled embroidery machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3358628A (en) * | 1965-07-26 | 1967-12-19 | Union Special Machine Co | Sewing machine control |
| DE1928061B2 (en) * | 1968-06-04 | 1973-01-18 | DEVICE FOR STOPPING A ROTATING, ELECTRIC MOTOR DRIVEN PART IN A PRE-DETERMINED ROTATION POSITION | |
| GB1282153A (en) * | 1968-09-21 | 1972-07-19 | Brother Ind Ltd | A sewing machine |
-
1993
- 1993-12-28 JP JP5355280A patent/JPH07194885A/en active Pending
-
1994
- 1994-12-19 GB GB9425591A patent/GB2285272A/en not_active Withdrawn
- 1994-12-27 DE DE4446808A patent/DE4446808A1/en not_active Withdrawn
- 1994-12-28 KR KR1019940037758A patent/KR950018799A/en not_active Application Discontinuation
- 1994-12-28 CN CN94119955A patent/CN1114372A/en active Pending
- 1994-12-28 IT ITRM940847A patent/IT1274989B/en active IP Right Grant
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451293B (en) * | 2007-12-07 | 2012-12-05 | Juki株式会社 | Pedal device of sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9425591D0 (en) | 1995-02-15 |
| DE4446808A1 (en) | 1995-06-29 |
| IT1274989B (en) | 1997-07-29 |
| JPH07194885A (en) | 1995-08-01 |
| GB2285272A (en) | 1995-07-05 |
| ITRM940847A1 (en) | 1996-06-28 |
| ITRM940847A0 (en) | 1994-12-28 |
| KR950018799A (en) | 1995-07-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |