CN1118393A - Driving apparatus in a sewing machine - Google Patents
Driving apparatus in a sewing machine Download PDFInfo
- Publication number
- CN1118393A CN1118393A CN95105791A CN95105791A CN1118393A CN 1118393 A CN1118393 A CN 1118393A CN 95105791 A CN95105791 A CN 95105791A CN 95105791 A CN95105791 A CN 95105791A CN 1118393 A CN1118393 A CN 1118393A
- Authority
- CN
- China
- Prior art keywords
- motor
- revolving part
- clutch
- rotation
- servo
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000033001 locomotion Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims 2
- 239000013256 coordination polymer Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000009183 running Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 230000008439 repair process Effects 0.000 description 3
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 2
- 235000011613 Pinus brutia Nutrition 0.000 description 2
- 241000018646 Pinus brutia Species 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
- D05B69/12—Electrical or electromagnetic drives using rotary electric motors
- D05B69/125—Arrangement of clutch-brake construction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Sewing Machines And Sewing (AREA)
- Braking Arrangements (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
In a driving apparatus in a sewing machine, a clutch plate 61 integral with an output shaft 58 is selectively pressed against either a flywheel 55 which is integral with the rotor 52 of a main motor or a rotary member 65 which is freely rotatably on the motor shaft 58, this driving device for a sewing machine transmitting the rotational force of a motor pulley 59 attached to an outer end of a motor spindle 58 to a main shaft. An auxiliary brake device 81 is provided which directly brakes the rotary member 65 and a one-way rotation clutch 67 which is rotatable in a direction opposite to the direction of rotation of the rotor 52 is interposed between the rotary member 65 and the transmission 74.
Description
The present invention relates to the drive unit in the Sewing machines, the what is called " clutch motor " that shank is stopped at automatically give on the allocation.
Fig. 3 expresses as the what is called of drive unit in the Sewing machines " clutch and motor CM ".In this clutch motor CM, as the rotor part R of motor, clutch disk CP, motor drive shaft S and motor belt pulley P are evenly distributed in the common clutch motor.
In this clutch motor CM, flashboard B can be with respect to motor drive shaft S and shell rotation.On the excircle of flashboard B, be cut into helical tooth G.A servo-motor SM who is used for low speed rotation is connected in the end of servo-motor axle SS, and the other end is connected with electromagnetic brake MB.The axle SS of this servo-motor has a screw rod W in order to mesh with above-mentioned helical tooth G.
In this clutch motor CM and common clutch motor similar, push away motor control stick L downwards so that clutch disk CP is pressed to flywheel F, its result, motor drive shaft S and belt pulley P are with rotation at a high speed.
When upwards pushing away motor control stick L, clutch disk CP is pressed towards the flashboard B that has helical tooth G.In this case, electromagnetic brake MB is instructed by low speed or is given the allocation instruction by the extraneous shank that provides and disconnects, to cause servo-motor SM running.Because servo-motor rotates by this way, flashboard B rotates by the engagement of screw rod W and helical tooth G.Like this, clutch motor CP, motor drive shaft S and belt pulley P are with low speed rotation.
Then, by low speed signal instruction being provided or making instruction that pin stops so that instruction is offered servo-motor by providing, MB starts to stop the low speed rotation of motor belt pulley P between electromagnetism.
For the Sewing machines that uses the ordinary clutch motor, as the device that shank is stopped at give allocation (suitable time, " shank gives the allocation arresting stop " will be mentioned in the back) by uncensored and Japanese practical application No.Sho.53-17468 that announce is disclosed.The layout of this device as shown in Figure 4.
In Fig. 4, label 1 is a sewing machine head; The 19th, traditional clutch motor; The 14th, be used for the servo-motor of low speed rotation, it is used for making shank to be parked in one and gives allocation; The 7th, have the jockey of unidirectional rotary clutch; The 22nd, actuator, it is used for making the motor control stick 20 of clutch motor 19 to move to making the clutch disk rotor side surface contact of both having got along well, the position of the flashboard contacts side surfaces of also getting along well, the 25th, switching device, it is used to produce top dead-centre stop instruction signal and bottom dead centre stop instruction signal.Fig. 5 expresses actuator 22 in detail, and Fig. 6 expresses switching device in detail.
Servo-motor 14 is connected on the cantilevered axle 2 on the sewing machine frame 1 by jockey 7.Unidirectional rotary clutch on the jockey 7 is designed to and can rotates freely on the direction of Sewing machines counter-rotating.The rotation of clutch motor 19 is delivered on the cantilevered axle 2 by flywheel 4 and annular belt 37.Motor control stick 20 links to each other with connecting rod 25,29 respectively with pedal 36, and connecting rod 25 and 29 is connected with each other by switching device 26.Switching device 26 has upward dead pass position of rest and puts switch 27 and bottom dead centre stop position switch 28, and they operate as follows: the control stick 32 that is fixed on the connecting rod 29 moves up or down with console switch 27 and 28.
Shank at this composition gives in the allocation arresting stop, and when pedal 36 (see figure 4)s were stepped on forward, connecting rod 29 was pulled down.In this process, connecting rod 29 and control stick 32 move downward, and compression spring 34 is compressed, and this is because the elastic force of compression spring 34 is littler than the elastic force of the back-moving spring that provides for motor control stick 20.Its result, the collar 34 that is fixed on the connecting rod 29 just leans against on the carriage of switching device 26.
When pedal 36 continues to step on forward, connecting rod 29, switching device 26 and the connecting rod 25 that is installed on the carriage of switching device 26 are done as a whole moving downward.Its result is installed in downward pressure motor control stick 20 (see figure 5)s of elastic force that the collar 24 on the connecting rod 25 overcomes the back-moving spring of motor control stick 20, and last, in clutch motor 19, clutch disk is pressed to rotor, and Sewing machines is to rotate at a high speed like this.In this process, the rotation of clutch motor 19 is sent on the cantilevered axle 2 by endless-belt 37 and flywheel 4, but the unidirectional rotary clutch on the jockey 7 can not be sent on the servo-motor 14 rotation.
When pedal 36 was got back to initial position, above-mentioned sequence of operations was undertaken by opposite order.At last, be installed on the connecting rod 29 control stick 32 by compression spring 34 the effect of Flexible Reset power and and switch 28 throw off, close to cause switch 28.According to " closing → open " instruction of switch 28, the halt instruction of shank lower dead point position is provided on the control box 35, and first actuator 22 (Fig. 5) starts as a result.
The shell of actuator 22 is fixed on the motor control stick 20, and the striker 38 on pressure-bearing side on the control stick 20 contacts with motor case.Then, when operate actuator 22, motor control stick 20 moves downward.The amount that motor control stick 20 moves down is to determine like this, in clutch motor 19, and clutch disk rotor one side contacts flashboard one side contacts of also getting along well of both having got along well.Then, when actuator 22 operations, the motor drive shaft of clutch motor 19 can rotate freely.
Then, servo-motor 14 rotations consequently make cantilevered axle 2 rotations by the unidirectional rotary clutch on the jockey 7.During cantilevered axle 2 rotation, when receiving when instructing from the not dead-centre position on flywheel 4 or the jockey 7, servo-motor 14 stops, and actuator 22 cuts out.As a result, the elastic force of back-moving spring resets motor control stick 22, and like this, in clutch motor 19, clutch disk is pressed to flashboard, so Sewing machines stops.
When pedal 36 during,, connecting rod 25 and the carriage that is fixed on the switching device 26 on the connecting rod 25 be subjected to the restriction of connecting rod 25 and motor case because moving upward to post legged.Connecting rod 29 and be fixed on the elastic force that control stick 32 on the connecting rod 29 overcomes compression spring 33 and move upward.As a result, switch 27 starts, and the collar 31 that is fixed on the connecting rod 29 upwards pushes away connecting rod 29 near switch carriage, causes pedal 36 stepping backward to stop.
When switch 27 started in a manner described, the halt instruction of shank upper dead center position offered control box 35.As a result and above-mentioned lower dead point position stopped process situation similar, receive upper dead center position signal, 14 runnings of actuator 22 and servo-motor from flywheel 4 or jockey 7.Then and the situation of lower dead point position stopped process similar, Sewing machines stops.
Yet conventional clutch CM shown in Figure 3 has following shortcoming:
(1) when unexpected braking, the inertia force that clutch disk CP rotation produces is applied to the region of engagement of helical tooth G and worm screw W, is easy to generate impulsive force like this.
(2) when running up when low-speed running is changed, contact with flashboard B with the clutch disk CP of rotation at a high speed with low speed rotation, clutch disk CP is relative with flashboard B to slide, and has quickened the wearing and tearing of flashboard B and clutch disk CP.
(3) braking procedure is that engagement by helical tooth G and worm screw W realizes.Therefore, the gap of motor belt pulley P between the gap that has on the direction of rotation and helical tooth G and worm screw W as many.
(4) when electromagnetic brake MB is out of control, when promptly motor can not be braked, motor belt pulley can not stop.Going to change or repair if electromagnetic brake MB takes out from motor, is this motor impossible as common clutch motor then.
Common shank shown in Fig. 4 to 6 gives the allocation arresting stop to be possessed following shortcoming is arranged:
(1) in top dead-centre stopped process or bottom dead centre stopped process, servo-motor 14 must motor control stick 20 move to give allocation after just running, to cause the clutch disk rotor side surface contact flashboard contacts side surfaces of also getting along well of both having got along well.Like this, operation is progressively finished.Then, spended time is wanted in the sequence of operations that shank is stopped at give on the allocation, and cycle time is long.
(2) clutch motor has two positions, one in rotation one side another is stopping a side, the clutch motor with traditional for clutch disk is similar, in addition, also has one both to keep clear of rotation one side and also keep clear of the centre position that stops a side.Therefore, clutch motor must have bigger space to hold clutch disk.And too to reduce the impact that pedal steps on forward be unallowed.If force to reduce this impact, then the rotation of motor control stick 2 just must improve accuracy greatly.
(3) when clutch disk or flashboard wearing and tearing, perhaps when they alternately wore and tore, motor control stick 20 had just changed the position.Therefore, just must adjust the position of actuator 22 with respect to motor control stick 20.
(4) if the back-moving spring of motor control stick 20 has very big elastic force, then just become can not be satisfactory for operate actuator.Therefore, it is impossible throwing off from flashboard fully for clutch disk in this case, although so that flashboard overload and servo-motor 14 also in rotation.Therefore, the unidirectional rotary clutch on servo-motor 14 or the jockey 7 may damage.
According to above-mentioned viewpoint, an object of the present invention is to provide a kind of drive unit on the Sewing machines of being used for that overcomes following difficulty, that is: when unexpected braking, the impulsive force that inertia produced of clutch disk rotation is sent on the rotary transmission part that rotation adapts with the transmission servo-motor, and when servo-motor does not change, the gap of rotary transmission part is sent to motor belt pulley makes belt pulley produce the gap on direction of rotation, when high speed rotating was changed to slowly running, flashboard and clutch disk slided relative to one another.
In order to finish this purpose, first target of the present invention provides a kind of drive unit that is used on the Sewing machines, and it comprises: the main motor with rotary rotor on first direction; One and the described flywheel of forming one at motor rotor; One motor drive shaft; With the clutch disk of motor drive shaft composition one, described clutch disk is in the face of described flywheel; Be contained in the revolving part on the motor drive shaft, the revolving part that is contained in a side is in the face of the flywheel relative with clutch disk; A servo-motor; Be used for the rotation of described servo-motor is sent to rotary actuator on the described revolving part; Be installed in the motor belt pulley on the motor drive shaft other end; The motor control stick that is used for mobile motor drive shaft, this motor control stick are pushed described clutch disk in flywheel and the revolving part one selectively, make the rotation transmission give belt pulley; Directly the complemental brake system of braking revolving part stops operating revolving part; A unidirectional rotary clutch is arranged between revolving part and rotary actuator, and this unidirectional rotary clutch is being rotated up by the defined in the opposite direction second party of described first party.
Second target of the present invention is to provide a kind of drive unit according to first target, and wherein said complemental brake system has a spring to be used to keep the revolving part of braking.
The 3rd target of the present invention is to provide a kind of drive unit according to first target, and wherein said rotary actuator comprises: an equipment gear that is connected on the servo-motor; Article one, cover the adjustment band of described equipment gear and revolving part; One is installed in speed-regulating pulley on the revolving part by unidirectional rotary clutch.
In Sewing machines drive unit according to the present invention, the rotary actuator that is used for the rotation of transmission servo-motor is connected to revolving part by the unidirectional rotary clutch that an energy rotates on the direction opposite with the motor direction of rotation, the rotation of servo-motor is delivered to this revolving part, to cause the revolving part that rotates around motor drive shaft by directly braking and stopping of complemental brake system.Therefore, when clutch motor is braked suddenly, can not be delivered on the rotary actuator between servo-motor and the revolving part by the impulsive force that inertia force produced of clutch disk rotation.In addition, when the servo-motor inoperation, the gap of rotary actuator can not be delivered on the motor belt pulley and produce the gap on direction of rotation.
In the present invention, being installed in the centre position is not used the motor control stick of motor drive shaft rotation.Therefore, have to press to revolving part or press to and can stablize rotation with the motor drive shaft of the clutch disk of main motor rotor all-in-one-piece flywheel, irrelevant with the elastic force that the amount of movement and the motor control stick of motor control stick returns.
In the present invention, the unidirectional rotary clutch that rotates on the direction opposite with the motor direction of rotation is between revolving part and rotary actuator.Therefore, from running up to low-speed running conversion, when auxiliary brake throw off and with the clutch disk of rotation at a high speed when revolving part with low speed rotation contacts, the revolving part that can rotate freely on the direction of rotor rotation (forming one with keep plate) is driven by clutch disk, so that the resistance of the unidirectional rotary clutch between revolving part and rotary actuator reduces its speed.Therefore, clutch disk and flashboard are clamped, contact with each other, and do not slide relatively, have contained their wearing and tearing.
In the drive unit according to second target, complemental brake system has an additional springs to keep the revolving part of braking.Even when actuator broke down, the elastic force of auxiliary braking spring also can be kept braking action therefore.
In drive unit, be used for that the rotary actuator that the rotation of servo-motor is transferred on the revolving part is had a speed belt according to the 3rd target.Therefore, when clutch disk is braked suddenly, can not be delivered to the mesh regional of fast belt pulley of adjustment and speed belt by the impulsive force that inertia force produced of clutch disk rotation.And when the servo-motor inoperation, the back lash of speed-regulating pulley and speed belt, perhaps the pine of speed belt stagnates and can not transmitted, and this has just prevented that motor belt pulley from producing the gap on direction of rotation.
In drive unit of the present invention, speed-regulating pulley is installed on the revolving part by single rotary clutch.Therefore, when the revolving part of auxiliary brake disengagement and clutch disk that rotates at a high speed and low speed rotation meshes, can be driven by clutch disk at the revolving part (forming one) that the rotor direction of rotation rotates freely with respect to speed-regulating pulley, though before meshing, drive by speed-regulating pulley always with clutch disk with flashboard.Its result has reduced the speed of revolving part by means of the resistance of unidirectional rotary clutch.
Fig. 1 is that it has constituted an alternative embodiment of the invention as the longitudinal sectional drawing of an example of the clutch motor that is provided in the drive unit in the Sewing machines;
Fig. 2 is the longitudinal sectional drawing of another example of clutch motor, and it has constituted the 2nd embodiment;
Fig. 3 is the longitudinal sectional drawing as an example of the clutch motor that is provided in the conventional ADS driving device in the Sewing machines;
Fig. 4 is the front view that traditional shank gives an example of allocation arresting stop in the Sewing machines that outlines;
Fig. 5 is the enlarged drawing of the actuator in the arresting stop in the detailed presentation graphs 4;
Fig. 6 is the enlarged drawing of the switching device in the arresting stop in the detailed presentation graphs 4.
Description the preferred embodiments of the present invention see figures.1.and.2.
Fig. 1 expresses the clutch motor as drive unit in the Sewing machines, and it has constituted first embodiment of the present invention.In Fig. 1, reference number 50 expression clutch motor; The 51st, motor framework; The 52nd, the rotor of main motor; The 55th, flywheel; The 56th, slip cap; The 58th, motor drive shaft; The 59th, motor belt pulley; The 61st, clutch disk; The 62nd, the motor control stick; The 64th, motor control stick back-moving spring; The 65th, revolving part; The 66th, flashboard; The 67th, unidirectional rotary clutch; The 68th, speed-regulating pulley; The 71st, speed-governing belt; The 72nd, gear; The 73rd, the servo-motor axle; The 74th, rotary actuator; The 75th, servo-motor; The 81st, complemental brake system; The 82nd, the auxiliary braking liner; The 84th, the auxiliary braking spring; The 87th, actuator.
As shown in Figure 1, in clutch motor 50, motor framework 51 accommodates main motor rotor 52, and armature spindle 53 is by bearing 54 rotatably supports.As shown in Figure 1, the right-hand member of armature spindle 53 is furnished with flywheel 55.Sliding sleeve 56 is contained in the right-hand member position of motor framework 51 slidably as shown in Figure 1.In the sliding sleeve of installing like this 56, motor drive shaft 58 usefulness make this 58 and the coaxial mode of above-mentioned armature spindle 53 by bearing 57 rotatably supports.
Above-mentioned sliding sleeve 56 is connected with motor control stick 62.Motor control stick 62 pivotally is contained on the pin 63 that embeds in the motor control stick 62.For sliding sleeve 56 is shifted onto right side shown in Figure 1, an end of motor control stick back-moving spring 64 is connected on the motor control stick 62 between pin 63 and the sliding sleeve 56, and spring 64 is draft helical springs, and the other end is connected the right part of motor framework 51.
Revolving part 65 is installed in rotation on the motor drive shaft 58 between sliding sleeve 56 and the clutch disk 61.Revolving part 65 has flashboard 66 in its left side (Fig. 1); Be that revolving part 65 and flashboard 66 constitute an element.Speed-regulating pulley 68, it is toothed belt pulley, is positioned at the right side (Fig. 1) of flashboard 66; Particularly this speed-regulating pulley 68 is contained on the revolving part 65 by unidirectional rotary clutch 67, and this unidirectional rotary clutch 67 can rotate on the direction opposite with above-mentioned rotor 52 direction of rotation.
Therefore and flashboard 66 revolving part 65 that constitutes one can on the direction of rotor 52 rotations, rotate with respect to speed-regulating pulley 68.The right-hand member of She Ji revolving part 65 is by 69 rotatably supports of the bearing on the motor framework 51 like this.
Speed-governing belt 71 is toothed belts.This speed-governing belt 71 covers speed-regulating pulley 68 and gear 72.Gear 72 is fixedly mounted on the servo-motor axle 73.Servo-motor 75 is fixed on motor framework 51 and the outer surface by motor cover 76.For the rotation of servo-motor 75 is transferred on the revolving part 65, rotary actuator is provided, it comprises gear 72, speed-governing belt 71 and speed-regulating pulley 68.
In order to brake flashboard 66, provide complemental brake system 81.Complemental brake system 81 comprises: the auxiliary braking liner 82 that flashboard 66 outer round surface are exerted pressure above-mentioned; A connecting rod 83 that is connected with brake rim 82; Auxiliary braking spring 84 between auxiliary braking liner 82 and motor framework 51.Particularly, for auxiliary braking liner 82 being pressed on the outer round surface of keep plate 66, this auxiliary braking spring 64 is the compression helical springs that are wrapped on the bar 83.
The left end of crank throw 85 (Fig. 1) is connected with the outer end that is exposed of the connecting rod 83 that stretches out from motor framework 51.The action bars 88 of upper end of crank throw 85 (Fig. 1) and actuator 87 is connected.Actuator 87 is positioned at the right side (Fig. 1) of crank throw 85, and is fixed on by carriage 89 on the outer surface of motor framework 51.Actuator 87 can be a solenoid, and cylinder or hydraulic cylinder also can be any other drive sources.
The operation of the clutch motor 50 of design like this will be described below.
Suppose main motor rotor 52 with rotation at a high speed, and servo-motor 75 is static.In this case, the not operation of actuator 87 in the complemental brake system 81 is so auxiliary braking liner 82 leans on the pressure of auxiliary braking spring 84 to be pressed on the outer round surface of flashboard 66.Like this, revolving part 65 is directly braked by complemental brake system 81 and is kept halted state.
Under such condition, motor operated bar 62 makes sliding sleeve 56 to left movement around the elastic force that pin 63 swings overcome motor control stick spring 64.In such operation, motor drive shaft 58 makes and presses to and main motor rotor 52 all-in-one-piece flywheels 55 with motor drive shaft 58 all-in-one-piece clutch disks 61 with sliding sleeve 56 motions.Therefore, main motor rotor 52 direct and motor drive shaft 58 couplings make and motor drive shaft 58 all-in-one-piece motor belt pulleys 59 rotate with high speed.
Under the situation that requires Sewing machines with low speed rotation, for example require the shank (not shown) is parked in top dead-centre or bottom dead centre, motor control stick 62 is swung in the opposite direction, by means of the elastic force of motor control stick back-moving spring 64 clutch disk 61 is pressed to and revolving part 65 all-in-one-piece flashboards 66.Under this condition, the low speed instruction or the shank that provide along with the external world give the allocation instruction, throw off complemental brake system 81, and servo-motor 75 rotations.
Like this, actuator 87 performance constraint control sticks 88.Its result, crank throw 85 moves upward bar 83 around pin 86 swings, and auxiliary braking liner 82 overcomes the outer round surface disengagement of the elasticity of compression power of auxiliary braking spring 84 from flashboard 66 like this, and revolving part 65 can be rotated freely.Then, start servo-motor 75, servo-motor axle 73 mounted thereto is passed through in the rotation of servo-motor 75, speed belt 71, and revolving part 65 is given in speed-regulating pulley and 67 transmissions of unidirectional rotary clutch.Like this, revolving part 65 is with low speed rotation.
In this case, as noted above, clutch disk 61 is pressed to and revolving part 65 all-in-one-piece flashboards 66.Like this, revolving part 65 and clutch disk 65 couplings just look like that they directly connect together each other.Therefore, be fixedly mounted on motor belt pulley 59 on the motor drive shaft 58 just with low speed rotation.
After this, along with the transmission of low speed instruction or pin halt instruction, servo-motor 75 stops, and complemental brake system 81 is operated with direct braking revolving part 65 and it is stopped.Like this, the low speed rotation of motor belt pulley 59 also just stops.
First embodiment of the invention described above has following effect:
(1) problem (1) and (3) that had about conventional clutch motor shown in Figure 3: by unidirectional rotary clutch 67, speed-regulating pulley 68 links to each other with flashboard 66, and flashboard 66 is by complemental brake system 81 brakings.Therefore, when clutch motor was braked suddenly, the impulsive force that inertia force produced of clutch disk rotation neither can be delivered to speed-regulating pulley 68 and also can not be delivered to speed-governing belt 71.When servo-motor did not move, the stagnation of speed-governing belt can not be delivered to motor belt pulley 59 made belt pulley 59 produce the gap in direction of rotation.
(2) problem (2) that is had about conventional clutch motor shown in Figure 3: by rotating at a high speed under the situation of low speed rotation conversion, throw off complemental brake system 81, the clutch disk 61 that revolves and the flashboard 66 of low speed rotation contact at a high speed.In this case, because unidirectional rotary clutch 67 rotates on the opposite direction of rotation of rotor 51, promptly flashboard 66 rotates on the direction of rotation of rotor 52 with respect to speed-regulating pulley 67.Therefore, the flashboard 66 that is driven by the rotation of speed-regulating pulley 68, promptly before above-mentioned contact takes place, the flashboard 66 that is driven by the rotation of servo-motor is driven by the rotation of clutch 61, so that has been reduced speed by the resistance of unidirectional rotary clutch 67.Thereby clutch disk 61 does not contact each other with flashboard 66 and slides relatively, has contained the wearing and tearing of clutch disk 61 and lock 66.
(3) the traditional shank shown in Fig. 3 to 6 gives problem (1) and (4) that the allocation arresting stop is had: in the present invention, motor control stick 62 is contained in the centre position makes the motor drive shaft 58 that rotates freely unaffected.Therefore, motor drive shaft can stably rotate, and is only relevant with the amount of exercise of clutch disk 61 and irrelevant with the amount of movement of motor control stick 62, and irrelevant with the Flexible Reset power of motor control stick.
(4) problem (4) that is had about the conventional clutch motor: even when actuator 87 is out of control, also can keep braking function by the elastic force of auxiliary braking spring 84.Even in order to change or to keep in repair, when actuator 87 was taken away, clutch and motor 50 kept functions constant therefore.
Fig. 2 has described second embodiment of the present invention: the difference of second embodiment and above-mentioned first embodiment only is a complemental brake system 81.Therefore in Fig. 2, the parts consistent with function shown in Figure 1 are with same reference number or symbolic representation.In order to simplify description, will mainly second embodiment be described different parts simultaneously.
In second embodiment, the design of the complemental brake system 81 that flashboard 66 is braked is as follows: as shown in Figure 2, the brake rim 82 that the outer round surface of flashboard 66 is braked is installed on an end of bar 83, and the left part of crank throw 85 is connected in the outer end of the bar 83 that stretches out from motor framework 51.Auxiliary braking spring 184 is compression springs, and it is around the outer end portion of the bar 83 that stretches out from motor framework 51.Particularly, the auxiliary braking spring promotes the outer round surface that auxiliary braking liner 82 leaves keep plate 66 between the left part of the outer surface of motor framework 51 and crank throw 85 (Fig. 2).
Similar with first embodiment, the mid portion of crank throw 85 is contained on the pin 86 that is embedded in the motor framework, and crank throw 85 can be around pin 86 swings.The upper end of crank throw 85 is connected on the action bars 188 of actuator 187 as shown in Figure 2.Actuator 187 is positioned at the left side of crank throw 85 as shown in Figure 2, is fixedly mounted on by carriage 189 on the outer surface of motor framework 51.Similar with the situation of first embodiment, actuator 187 can be solenoid, cylinder or hydraulic cylinder, also can be other drive sources.
In the complemental brake system 81 in second embodiment, the reverse movement of the action bars 88 of actuator 87 during the motion of the action bars 188 of actuator 187 and first are implemented.That is, when 187 operations of the actuator in the complemental brake system 81, action bars 188 is withdrawn left.Its result, crank throw 85 moves downward around the elastic force that pin 86 swings make bar 83 overcome auxiliary braking spring 184, causes auxiliary braking liner 82 to be pressed on the outer round surface of flashboard 66.Like this, revolving part is directly braked, and stops.
When complemental brake system 81 is thrown off, disconnect actuator 187, then action bars 188 moves right.Its result, crank throw 85 moves upward bar 83 around pin 86 swings, causes the elastic force by auxiliary braking spring 184 to make auxiliary braking liner 82 leave the outer surface of flashboard 66.Its result, revolving part 65 freedom.Other operation is identical with first embodiment.
The clutch motor that has complemental brake system 81 above-mentioned among second embodiment has and the function described in first embodiment (1) to (3) identical functions.
When the clutch motor that the present invention describes is used for the Sewing machines drive unit, should be noted that the present invention can not be therefore restricted.That is exactly that technological concept of the present invention can be applied in other the drive unit, such as other clutch or motor.In addition, technological concept of the present invention can be applied in the Sewing machines of all kinds.Clearly instead other concrete structure of the rotary actuator between servo-motor and the revolving part does not need to break away from the present invention and just can change or improve.
As noted above, in the Sewing machines drive unit, the rotary actuator that is used for the rotation of transmission servo-motor is connected with revolving part by unidirectional rotary clutch, therefore unidirectional rotary clutch rotates up the negative side of rotor direction of rotation, rotates and is directly braked, stops with the revolving part that the servo-motor transmission is rotated around motor drive shaft.Then, when clutch motor was braked suddenly, the impulsive force that inertia force produced of clutch disk rotation can not be delivered on the rotary actuator between servo-motor and the revolving part.In addition, this feature has been eliminated such difficulty, and promptly when the servo-motor inoperation, the gap of rotary actuator is delivered to motor belt pulley 59 and causes produce the gap on direction of rotation.
In the present invention, the motor control stick that is installed in the centre position makes that the rotation of motor drive shaft is unaffected.Therefore, having the motor drive shaft of pressing to revolving part or pressing to the clutch disk of main motor rotor all-in-one-piece flywheel can stably rotate, irrelevant with the elastic force that the amount of movement and the motor control stick of motor control stick resets.
In the present invention, and rotor rotation side in the opposite direction on the rotation unidirectional rotary clutch between revolving part and rotary actuator.Therefore, rotating to the transfer process of low speed rotation from high speed, when the clutch disk of auxiliary brake disengagement and rotation at a high speed contacts with the revolving part of low speed rotation, the revolving part (being integral with flashboard) that can rotate freely in the rotor direction of rotation is driven by clutch disk, causes the resistance of the unidirectional rotary clutch between revolving part and rotary actuator that its speed is reduced.Therefore, the flashboard of clutch disk is close to each other.Do not slide relatively between them, contain the wearing and tearing of these parts.
In addition, complemental brake system has the spring that keeps the revolving part braking.Even when actuator was out of control, the elastic force of auxiliary braking spring had also been kept braking function therefore.Even in order to change or to keep in repair when taking actuator away, clutch motor remains unchanged on function.
Furtherly, the rotary actuator that is used for the rotation of servo-motor is delivered to revolving part is the speed belt device.Therefore, when clutch motor is braked suddenly, can not be delivered to the mesh regional of speed-regulating pulley and speed-governing belt by the impulsive force that inertia force produced of clutch disk rotation.When the servo-motor inoperation, the back lash between speed-regulating pulley and the speed belt, or the pine of speed belt stagnates and can not pass, and this has just prevented that motor belt pulley from producing the gap on direction of rotation.
Again furtherly, speed-regulating pulley is installed on the revolving part by the unidirectional clutch that revolves.Therefore, when the revolving part of clutch disk of assisting moving brake disengagement and rotation at a high speed and low speed rotation meshes, the revolving part (being integral with flashboard) that can rotate freely on the direction of rotor rotation with respect to speed-regulating pulley is driven by clutch disk, though it is driven by speed-regulating pulley before meshing with clutch disk always.Its result, the speed of revolving part has been reduced by the resistance of unidirectional rotary clutch.Therefore, clutch disk and flashboard are close to each other, between relatively do not slide, contained the wearing and tearing of these parts.
Claims (9)
1. the drive unit of using on the Sewing machines, it comprises:
Main motor with the rotor that on first direction, rotates;
Flywheel with main motor rotor formation one;
The motor drive shaft of separating with main motor rotor;
With the clutch plate of described motor drive shaft formation one, this clutch plate is in the face of flywheel;
Be contained in the motor belt pulley on motor drive shaft one end;
Be contained on the motor drive shaft and the revolving part between motor belt pulley and clutch plate;
One servo-motor;
The rotation of servo-motor is transferred to transmission device on the revolving part;
Be used for moving the motor control stick of described motor drive shaft, this motor control stick is close to one of flywheel and revolving part selectively to clutch plate, gives motor belt pulley one the rotation transmission in the two of flywheel or revolving part;
Directly revolving part is braked the complemental brake system that it is stopped selectively; With
Unidirectional rotary clutch between revolving part and transmission device, this unidirectional rotary clutch can rotate on the second direction opposite with first aspect.
2. drive unit according to claim 1, wherein said transmission device comprises:
Be connected the equipment gear on the servo-motor;
Cover the speed belt of described equipment gear and revolving part; With
Be installed in speed-regulating pulley on the revolving part by unidirectional rotary clutch.
3. drive unit according to claim 1, wherein said complemental brake system are useful on keeps the spring that revolving part is in on-position.
4. drive unit according to claim 3, wherein said transmission device comprises:
Be connected the equipment gear on the servo-motor;
Cover the speed belt on described equipment gear and the revolving part; With
Be installed in speed-regulating pulley on the revolving part by unidirectional rotary clutch.
5. drive unit according to claim 3, wherein said complemental brake system also comprises:
Be used to push down the auxiliary braking liner of revolving part outer round surface;
With the functional unit that the auxiliary braking liner is connected, the motion of this functional unit is left on the outer round surface that is used to make the auxiliary braking liner be pressed onto revolving part selectively and from the outer round surface of this revolving part; With
The actuator that is used for the move operation parts.
6. drive unit according to claim 1, wherein said complemental brake system comprises:
Be used to push down the auxiliary braking liner of revolving part outer round surface;
With the functional unit that the auxiliary braking liner is connected, the motion of this functional unit is left on the outer round surface that is used to make the auxiliary braking liner be pressed onto revolving part selectively and from the outer round surface of this revolving part; With
The actuator that is used for move operation spare.
7. drive unit according to claim 6, wherein said actuator is made up of in solenoid, cylinder and the hydraulic cylinder any one.
8. drive unit according to claim 6, wherein said auxiliary braking liner can endwisely slipping perpendicular to motor drive shaft.
9. drive unit according to claim 1, wherein said motor drive shaft slides between primary importance that clutch plate contacts with flywheel and clutch plate and the second place that revolving part contacts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP89972/94 | 1994-04-27 | ||
| JP6089972A JPH07289768A (en) | 1994-04-27 | 1994-04-27 | Driving device for a sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1118393A true CN1118393A (en) | 1996-03-13 |
Family
ID=13985604
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95105791A Pending CN1118393A (en) | 1994-04-27 | 1995-04-27 | Driving apparatus in a sewing machine |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPH07289768A (en) |
| KR (1) | KR950032804A (en) |
| CN (1) | CN1118393A (en) |
| BR (1) | BR9501790A (en) |
| DE (1) | DE19515575A1 (en) |
| GB (1) | GB2288822A (en) |
| IT (1) | IT1279142B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644169A (en) * | 2011-02-18 | 2012-08-22 | Juki株式会社 | Delivery arm type sewing machine |
| CN105648665A (en) * | 2016-01-27 | 2016-06-08 | 浙江海森纺机科技有限公司 | Automatic locating device for full computer glove overlock machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB750603A (en) * | 1951-03-30 | 1956-06-20 | Rothenborg Specialmaskiner For | Improvements in and relating to driving means particularly for sewing machines |
| DE1928061B2 (en) * | 1968-06-04 | 1973-01-18 | DEVICE FOR STOPPING A ROTATING, ELECTRIC MOTOR DRIVEN PART IN A PRE-DETERMINED ROTATION POSITION | |
| US3967566A (en) * | 1974-08-21 | 1976-07-06 | Murray Spiegel | Sewing machine attachment |
| JPH07194883A (en) * | 1993-12-28 | 1995-08-01 | Juki Corp | Driving device of sewing machine |
-
1994
- 1994-04-27 JP JP6089972A patent/JPH07289768A/en active Pending
-
1995
- 1995-04-25 KR KR1019950009759A patent/KR950032804A/en not_active Application Discontinuation
- 1995-04-26 IT IT95TO000328A patent/IT1279142B1/en active IP Right Grant
- 1995-04-26 BR BR9501790A patent/BR9501790A/en not_active Application Discontinuation
- 1995-04-27 CN CN95105791A patent/CN1118393A/en active Pending
- 1995-04-27 DE DE19515575A patent/DE19515575A1/en not_active Withdrawn
- 1995-04-27 GB GB9508617A patent/GB2288822A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102644169A (en) * | 2011-02-18 | 2012-08-22 | Juki株式会社 | Delivery arm type sewing machine |
| CN102644169B (en) * | 2011-02-18 | 2014-11-12 | Juki株式会社 | Delivery arm type sewing machine |
| CN105648665A (en) * | 2016-01-27 | 2016-06-08 | 浙江海森纺机科技有限公司 | Automatic locating device for full computer glove overlock machine |
| CN105648665B (en) * | 2016-01-27 | 2018-02-02 | 浙江海森纺机科技有限公司 | A kind of automatic positioning equipment of full-computerized gloves overedger |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9508617D0 (en) | 1995-06-14 |
| BR9501790A (en) | 1995-12-05 |
| JPH07289768A (en) | 1995-11-07 |
| DE19515575A1 (en) | 1995-11-02 |
| KR950032804A (en) | 1995-12-22 |
| GB2288822A (en) | 1995-11-01 |
| ITTO950328A0 (en) | 1995-04-26 |
| ITTO950328A1 (en) | 1996-10-26 |
| IT1279142B1 (en) | 1997-12-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1309554C (en) | Reciprocation drive mechanism and press using the same | |
| CN1270657C (en) | Furniture drive for adjusting parts of an item of furniture in relation to each other | |
| JP6980330B1 (en) | Multi-station automatic feeding system for punch presses | |
| CN100351116C (en) | Wheel drive apparatus for vehicle | |
| CN1298512C (en) | Drill or chisel hammer | |
| JP3415163B2 (en) | Method of controlling ram speed of press ram of metal forming press and drive device for press ram | |
| CN100356078C (en) | Structure of moving device using electromechanical to control clutch | |
| CN1118393A (en) | Driving apparatus in a sewing machine | |
| WO2008126590A1 (en) | Press machine | |
| CN1270007C (en) | Control unit for 'intermittence stepping motion' operation of separating drum for comber | |
| CN100421922C (en) | Power driven and braking equipment of pressing machine driven by servomotor directly | |
| CN1049708C (en) | Driving means of sewing machine | |
| CN1118392A (en) | Driving apparatus in a sewing machine | |
| CN1673566A (en) | Braking device for multi-gear wheel boss | |
| CN1464115A (en) | Full automatic washing machine | |
| CN1126775A (en) | Driving apparatus of sewing machine | |
| JP5525871B2 (en) | Press machine | |
| CN1067752C (en) | Power transmission device | |
| CN100343545C (en) | Modularized ultrasonic clutch and brake apparatus | |
| CN1279679C (en) | Outer rotation driving mechanism of offset motor | |
| CN2693405Y (en) | Brake mechanism for machine tool | |
| CN102121516A (en) | Operating method and device of power motion machine | |
| CN1114372A (en) | Drive device for a sewing machine | |
| CN1078692A (en) | Be used for device such as power-transfer clutch or gearbox system manipulation | |
| CN1465792A (en) | Fully automatic washing machine |
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 |