CN205803779U - Lifting pressre of sewing machine and the drive mechanism of trimming - Google Patents
Lifting pressre of sewing machine and the drive mechanism of trimming Download PDFInfo
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- CN205803779U CN205803779U CN201620738335.8U CN201620738335U CN205803779U CN 205803779 U CN205803779 U CN 205803779U CN 201620738335 U CN201620738335 U CN 201620738335U CN 205803779 U CN205803779 U CN 205803779U
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- trimming
- depression bar
- sewing machine
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Abstract
This utility model provides the drive mechanism of a kind of lifting pressre of sewing machine and trimming, belongs to field of mechanical technique.It solve the problems such as the trimming accuracy of existing sewing machine is the highest.The drive mechanism of this lifting pressre of sewing machine and trimming is arranged in the frame of sewing machine, including main shaft and motor, being fixedly connected with on the motor shaft of motor and lift belling wheel and trimming push rod, frame is hinged with trimming depression bar, trimming push rod can be conflicted on trimming depression bar and drive trimming depression bar to swing；Being equipped with movable axis in frame, movable axis is fixedly connected with trimming crank, trimming depression bar is resisted against on the end face of movable axis；Being fixedly connected with trimming cam on main shaft, the end face of trimming cam has groove ringwise, trimming crank is provided with contact, when trimming depression bar promotes movable axis to move in frame, contact is embedded in cannelure；The return spring making contact depart from cannelure it is provided with between trimming crank and frame.This utility model improves the accuracy of sewing machine trimming.
Description
Technical field
This utility model belongs to field of mechanical technique, relates to the drive mechanism of a kind of sewing machine, particularly relates to a kind of sewing
Machine presser foot lifter and the drive mechanism of trimming.
Background technology
Sewing machine is the machine sewed up by sewing by suture, including needle bar mechanism, Yarn taking-up mechanism, feed mechanism, hook line
Mechanism, hold-down mechanism, Winder and lubricating arrangement etc..Needle bar mechanism include shank, drive shank move up and down main shaft with
And the spindle motor that drive shaft rotates.Sewing machine can be divided into flat seam machine, chain according to frame mode or sewing technology mode
Seam machine, overedger, lockstitch button holder and closer etc..Along with improving constantly of sewing machine automaticity, sewing machine includes toward contact
Automatic thread trimming device, thread trimmer is typically installed to the lower section of platen by automatic thread trimming device, drives thread trimmer to move by motor
Realize sewing machine trimming.Sewing machine trimming typically occurs in sewing to be terminated presser feet and not to lift when being in impaction state, in sewing
During often the action of trimming and presser feet is connected.
Chinese patent literature data disclosure proposes the trimming in a kind of sewing machine, lifts pressure, linear-sweeping drive mechanism [application
Number: 200910096841.6；Publication No.: CN101519834], this drive mechanism is arranged in the frame of sewing machine, including lifting pressure
Cam, trimming cam, lifting buckle handle and trimming crank, described lifts belling wheel and power section one phase that it can be driven to rotate
Connection, lifts handle of buckling and is hinged in frame, and lifts one end of handle of buckling and lift pressure connecting rod and be hinged, and lifts the other end of handle of buckling and lifts
It is provided with between belling wheel and can make to lift the handle other end of buckling and be resisted against the contact structures one lifted on belling wheel all the time；Described trimming is convex
Wheel is connected with the power section two that it can be driven to rotate, and trimming crank is hinged in frame, and one end of trimming crank and trimming
Connecting rod is hinged, and the other end of trimming crank is provided with the contact knot that the trimming crank other end can be made to be resisted against all the time on trimming cam
Structure two.Wherein, contact structures one can be to be arranged to lift non-circular cannelure in pressure cam face, lifts the one end of handle of buckling
Be provided with roller and be embedded at cannelure make roller with lift belling wheel contact.Contact structures two can be to be arranged at trimming cam end
Non-circular cannelure on face, one end of above-mentioned trimming crank is embedded at cannelure.Actuating unit one and actuating unit two are equal
It can be motor.
But this actuating unit one and actuating unit two are independent motor so that presser foot lifter and trimming action exist certain
Error, trimming action may be caused to occur in after presser foot lifter action starts, so can cause trimming failure so that sewing
The trimming accuracy of machine reduces.
Summary of the invention
The purpose of this utility model is the problems referred to above existed for prior art, it is proposed that a kind of lifting pressre of sewing machine and
The drive mechanism of trimming, solves the technical problem that the accuracy being how to improve sewing machine trimming.
The purpose of this utility model can be realized by following technical proposal:
Lifting pressre of sewing machine and the drive mechanism of trimming, be arranged in the frame of sewing machine, including main shaft and be fixed on
Motor in frame, the motor shaft of described motor is fixedly connected with and lifts belling wheel, it is characterised in that the motor shaft of described motor
On be additionally provided with trimming push rod, described frame is hinged with trimming depression bar, the fixing end of described trimming push rod and the motor of motor
Axle is fixing to be connected, and the movable end of described trimming push rod can be conflicted on trimming depression bar and drive trimming depression bar around trimming depression bar
Swing with the pin joint of frame；It is equipped with movable axis in described frame, described movable axis is fixedly connected with trimming crank, described
The movable end of trimming depression bar is resisted against on the end face of movable axis；Being fixedly connected with trimming cam on described main shaft, described trimming is bent
Handle is between trimming cam and trimming depression bar；On the end face of described trimming cam, there is non-circular cannelure, described in cut
In being provided with being embedded into cannelure on line crank and can in cannelure the contact of movement, when described trimming depression bar pushes away
When dynamic movable axis moves in frame, described contact is embedded in cannelure；It is provided with energy between described trimming crank and frame
Contact is enough made to depart from the return spring of cannelure.
Lifting belling wheel rotational enough drives presser feet to make elevating movement, within contact is embedded into cannelure and main axis
Time, main shaft can drive contact to move in cannelure, so that trimming crank-motion, trimming crank-motion can drive
Thread trimmer motion realizes sewing machine trimming.The motor shaft of motor is installed when lifting belling wheel and trimming push rod according to actual design
Need regulate they rotate phase relation.Sewing machine work time, lift belling wheel be in make presser feet keep impaction state and
Can not trigger the position of trimming, presser feet coordinates sewing compression with feeding tooth, in the drive mechanism of lifting pressre of sewing machine and trimming
Motor no longer work to stop operating and make the impaction state of presser feet keep and can not trigger trimming, now main axis drives shank
And the eedle on shank moves up and down and realizes the feeding of suture.At the end of the sewing just of sewing machine, presser feet is still located
Motor in the drive mechanism of impaction state, lifting pressre of sewing machine and trimming starts to rotate, and the motor shaft of motor drives trimming
The movable end of push rod is conflicted on trimming depression bar thus is driven trimming depression bar to swing around the pin joint of trimming depression bar with frame, with
The movable end of Shi Yinwei trimming depression bar is resisted against on the end face of movable axis so that the movable end of trimming depression bar when trimming depression bar swings
Movable axis is promoted to slide in frame, so that the contact on trimming crank is embedded in the cannelure of trimming cam, main shaft
Rotation make contact move in cannelure, trimming crank-operated drive sewing machine when contact moves in cannelure
Thread trimmer moves, thus realizes the trimming of sewing machine.When electric machine rotation to trimming push rod movable end separates with trimming depression bar, cut
Line push rod movable end can not be conflicted on trimming depression bar, and trimming crank makes contact depart from annular under the effect of return spring
Groove, make simultaneously with trimming crank be connected movable axis and with movable axis end face against trimming depression bar move reset.Contact
After departing from trimming cam, the rotation of main shaft can not drive trimming crank-motion thus can not realize the motion of thread trimmer, seam
Machine of threading no longer carries out trimming action, make again when sewing machine no longer carries out trimming motor shaft rotate drive lift pressure cam rotation thus
Driving presser feet lifting, presser foot lifter and trimming action complete.When continuing sewing, motor shaft rotates continuation drive and lifts pressure cam rotation also
Making presser feet decline and be in impaction state, now on motor shaft, trimming push rod is not the most conflicted on trimming depression bar, and motor stops work
Making, presser feet keeps impaction state.
The motor shaft of motor is fixed connection simultaneously and lifts belling wheel and trimming push rod, so lift belling wheel and trimming push rod
Position relationship be fixing, according to design requirement motor motor shaft rotate during by lift belling take turns and trimming
The rotation of push rod correspondingly triggers presser feet or thread trimmer action, so may insure that the movable end of trimming push rod is conflicted at trimming
Trigger sewing machine on depression bar to carry out lifting during trimming action the position of belling wheel and be in and make presser feet impaction state, thus avoid two
The problem that the trimming action that the error that motor driven belts is come causes and presser feet action can not be worked in coordination with, improves the essence of sewing machine trimming
Really property.Contact is realized in annular in being embedded into the cannelure of trimming cam further through contact and in the rotation process of main shaft
Move in groove, thus realize the trimming of sewing machine, make the rotation on main shaft be converted into trimming action, because accurate in order to sew
Property main shaft on the motor that connects be all to drive motor, and drive motor higher than the precision of general motor, so by main
Axle drives trimming can improve the accuracy of trimming.And by lifting belling wheel and the public motor of trimming push rod and with main
Axle drives trimming can reduce the rack space that the drive mechanism of lifting pressre of sewing machine and trimming takies.
In the drive mechanism of above-mentioned lifting pressre of sewing machine and trimming, described motor is double output shaft electric machines, described motor
One end of motor shaft for lifting pressure side, described in lift pressure side be fixedly connected with described in lift belling wheel, the motor shaft of described motor another
One end is trimming end, and described trimming end is fixedly connected with described trimming push rod.
Motor can be double output shaft electric machines.By trimming push rod and lift belling wheel be separately separately positioned on the two ends of motor shaft can
To make full use of the space at motor two ends, influencing each other when reducing trimming push rod simultaneously and lift pressure cam action, thus increase
The accuracy of trimming.
In the drive mechanism of above-mentioned lifting pressre of sewing machine and trimming, lifting outside pressure side and trimming end of described motor shaft
Be respectively arranged with location plane one and location plane two on side, described in lift belling wheel and be set in and lift in pressure side and pass through securing member
One is fixedly connected on and lifts pressure side, described in lift and be provided with hole one, location on the sidewall of belling wheel, described securing member one is through hole, location
One is resisted against in the plane one of location；The fixed end cap of described trimming push rod is located on trimming end and connects by securing member two is fixing
At trimming end, described trimming push rod is fixed and is provided with hole two, location on the sidewall of end, and described securing member two supports through hole two, location
Lean against in the plane two of location.
Motor shaft arranges location plane one and location plane two, can make to lift belling wheel with trimming push rod when mounted
It is accurately positioned, reduces the reduction of the trimming accuracy that alignment error causes, thus improve the accuracy of trimming.
In the drive mechanism of above-mentioned lifting pressre of sewing machine and trimming, described frame is provided with two and is coaxially disposed
Installing hole, is fixed with axle sleeve in described installing hole, being equipped with described movable axis and described movable axis in described axle sleeve can be
Moving in axle sleeve, the middle part of described movable axis is fixing with one end of trimming crank to be connected, and one end of described movable axis is return end
And be arranged with described return spring, one end of described return spring is resisted against on axle sleeve, the other end of described return spring against
On trimming crank；The other end of described movable axis is for be pushed away end, and the movable end of described trimming depression bar is resisted against movable axis and is pushed away
On the end face of end；Described return end and contact are positioned at the same side of trimming crank and described in when activity axial return end moves
Contact on trimming crank can be embedded in the cannelure of trimming cam.
The movable end of trimming depression bar is resisted against movable axis by pushing away on the end face of end, when trimming push rod movable end is conflicted trimming
On depression bar and make the movable end of trimming depression bar when pin joint rotates, the movable end of trimming depression bar promote movable axis make movable axis and
Trimming crank moves to return end so that contact can be embedded in the cannelure of trimming cam, it is achieved the trimming of sewing machine
Action.When trimming push rod movable end separates with trimming depression bar, under the effect of return spring, movable axis and trimming crank are to being subject to
Pushing away end mobile, contact returns to initial position with the disengaging of trimming cam, and trimming action stops.Return spring is set in movable axis
Return end on the one hand can make being resisted against all the time on the movable end of trimming depression bar by pushing away end of movable axis, it is ensured that trimming depression bar is lived
The action immediate response of moved end, on movable axis, on the other hand can ensure that contact can depart from trimming cam, it is achieved sewing
The timely stopping of machine trimming action, improves the accuracy of trimming.
In the drive mechanism of above-mentioned lifting pressre of sewing machine and trimming, described trimming depression bar is arranged with the hinged place of frame
There is torsion spring.
The setting of torsion spring can ensure that what the movable end of trimming depression bar was resisted against movable axis all the time is pushed away end, it is ensured that trimming pressure
The action immediate response of bar movable end, on movable axis, makes the time delay of the trimming action of minimizing sewing machine, thus improves trimming
Accuracy.
In the drive mechanism of above-mentioned lifting pressre of sewing machine and trimming, being had on the end face of end by pushing away of described movable axis
The ballhead of spherical in shape, the movable end of described trimming depression bar is tabular, and described ballhead is resisted against trimming depression bar movable end
Plane on.
Spherical and plane against movable axis stress can be made to concentrate, the beneficially action instantaneity of movable axis, thus
Be conducive to keeping the accuracy of trimming action.
In the drive mechanism of above-mentioned lifting pressre of sewing machine and trimming, described frame is also fixedly connected with depression bar location
Plate, limited location groove on described depression bar location-plate, described trimming depression bar moves in stopper slot.
Stopper slot on depression bar location-plate is possible to prevent trimming depression bar to be moved through position, prevents trimming depression bar to lose efficacy, it is to avoid
The trimming failure caused because trimming depression bar lost efficacy, thus improve the accuracy of trimming.
In the drive mechanism of above-mentioned lifting pressre of sewing machine and trimming, described frame is also fixedly connected with crank location
Plate, described trimming crank has location division, and when described trimming crank rotates around movable axis axis, described location division can be supported
Lean against on crank location-plate.
Limit trimming crank by crank location-plate to rotate, prevent trimming crank from rotating and excessively occur that contact can not embed
Situation in trimming cam cannelure, thus improve the degree of accuracy of trimming.
In the drive mechanism of above-mentioned lifting pressre of sewing machine and trimming, the movable end of described trimming push rod is arranged with rolling
Wheel, the sidewall of described trimming depression bar arranges arc surface, and described roller can be conflicted on described arc surface；Described trimming crank
On contact be set to roll the roller being connected on trimming crank.
Roller and arc surface and arranging of roller can reduce abrasion, ensure the essence of trimming during long-term use
Really property.
In the drive mechanism of above-mentioned lifting pressre of sewing machine and trimming, the pressure side of lifting of described motor shaft is also fixedly connected with
Sensing chip, the casing of described motor is fixed with sensing chip with the use of induction apparatus.
By sensing chip and induction apparatus with the use of the turned position of motor shaft can be detected, make the motor can be spy
Fixed position is shut down accurately or works, and improves presser foot lifter and the harmony of trimming action.
Compared with prior art, the drive mechanism of this lifting pressre of sewing machine and trimming has the advantage that
Lift belling wheel by being connected on same motor shaft and trimming push rod driving pressure foot-propelled is made and starts trimming action, with
Time drive sewing machine trimming further through main shaft, improve the accuracy of sewing machine trimming.Further through lifting belling wheel and trimming
Push rod is connected in the two ends of motor shaft, arranges location plane one and location plane two, at the return end of movable axis on motor shaft
Upper sheathed return spring, arranges torsion spring in the hinged place of trimming depression bar Yu frame, in frame fixing connect depression bar location-plate with
Crank location-plate, and sheathed roller and contact is set to rolling is connected to trimming crank on the movable end of trimming push rod
On roller, improve the accuracy of sewing machine trimming further.
Accompanying drawing explanation
Fig. 1 is the axonometric chart one of this drive mechanism；
Fig. 2 is the axonometric chart two of this drive mechanism；
Fig. 3 is the location diagram of this drive mechanism and frame；
Fig. 4 is this drive mechanism part-structure axonometric chart one；
Fig. 5 is this drive mechanism part-structure axonometric chart two；
Fig. 6 is the structure chart of trimming cam in this drive mechanism；
Fig. 7 is the structure chart of motor shaft in this drive mechanism；
Fig. 8 is the explosive view of motor parts on shaft in this drive mechanism.
In figure, 1, frame；1a, installing hole；2, main shaft；3, motor；3a, motor shaft；3b, lift pressure side；3b1, location plane
One；3b2, location plane three；3c, trimming end；3c1, location plane two；4, belling wheel is lifted；4a, securing member one；4b, hole, location
One；5, trimming push rod；5a, securing member two；5b, hole two, location；5c, roller；6, trimming cam；6a, cannelure；7, trimming pressure
Bar；7a, arc surface；8, trimming crank；8a, contact；8b, location division；9, movable axis；9a, axle sleeve；9b, return end；9c, return
Position spring；9d, pushed away end；9d1, ballhead；10, torsion spring；11, depression bar location-plate；11a, stopper slot；12, crank location-plate；
13, sensing chip；14, induction apparatus；15, handle of buckling is lifted；15a, sliding shoe；16, pressure connecting rod is lifted；17, trimming connecting rod.
Detailed description of the invention
The following is specific embodiment of the utility model and combine accompanying drawing, the technical solution of the utility model is made further
Description, but this utility model is not limited to these embodiments.
Embodiment one
As shown in Figures 1 to 8, the drive mechanism of a kind of lifting pressre of sewing machine and trimming is arranged in the frame 1 of sewing machine,
Including main shaft 2 and the motor 3 that is fixed in frame 1.Motor 3 is double output shaft electric machines, and motor 3 has a motor shaft 3a, electricity
One end of arbor 3a for lifting pressure side 3b, lift pressure side 3b be fixedly connected with lift belling wheel 4, the other end of motor shaft 3a is trimming end
3c, trimming end 3c are fixedly connected with trimming push rod 5.Certainly motor 3 can also be single output shaft electric machine, a connection of motor shaft 3a
End be to lift pressure side 3b and one of trimming end 3c, i.e. motor shaft 3a connect both to be fixedly connected with on end and lift belling wheel 4, solid again
Determine connection and have trimming push rod 5.Motor shaft 3a lifts and is provided with location plane one 3b1 and location plane three on the lateral surface of pressure side 3b
3b2, the lateral surface of motor shaft 3a trimming end 3c is provided with location plane two 3c1.
Lift belling wheel 4 to be set in lift pressure side 3b in and be fixedly connected on by securing member one 4a and lift pressure side 3b, lift belling and take turns 4
Sidewall on be provided with location hole one 4b, securing member one 4a through location hole one 4b be resisted against location plane one 3b1 on.Lift pressure side
Also being fixedly connected with sensing chip 13 on 3b, sensing chip 13 is set in lift in pressure side 3b and be fixedly connected on by securing member three lifts pressure
End 3b, the sidewall of sensing chip 13 is provided with hole three, location, and securing member three is resisted against location plane three 3b2 through hole three, location
On.Be fixed with in the casing of motor 3 with sensing chip 13 with the use of induction apparatus 14.By joining of sensing chip 13 and induction apparatus 14
Close and use the turned position that motor shaft 3a can be detected, make motor 3 can shut down accurately in specific position or work.
Being hinged with in the casing of motor 3 and lift handle 15 of buckling, pressure connecting rod 16 is lifted in one end connection lifting handle 15 of buckling, and lifts pressure connecting rod 16 and connects
Have presser foot device, lift the other end of handle 15 of buckling have all the time with the sliding shoe 15a lifting belling and taking turns 4 sidewall contacts.Motor shaft 3a
Rotate drive and lift belling wheel 4 rotation, lift belling wheel 4 rotation and the sliding shoe 15a contacted all the time with its sidewall is moved up and down,
Thus drive is lifted handle 15 of buckling and swung around its pin joint hinged with motor 3 casing, make to lift pressure connecting rod 16 action and drive presser feet to make
Elevating movement.
The fixed end cap of trimming push rod 5 is located on trimming end 3c and is fixedly connected on trimming end 3c by securing member two 5a,
Being provided with location hole two 5b, securing member two 5a on the sidewall of the fixing end of trimming push rod 5, to be resisted against location through location hole two 5b flat
On the 3c1 of face two.It is hinged with trimming depression bar 7 in frame 1, and the hinged place of trimming depression bar 7 and frame 1 is provided with torsion spring 10, trimming
It is arranged with roller 5c on the movable end of push rod 5, the sidewall of trimming depression bar 7 arranges arc surface 7a, roller 5c and can conflict and justifying
In cambered surface 7a.When motor shaft 3a rotates, the roller 5c on trimming push rod 5 can conflict trimming depression bar 7 arc surface 7a on
Thus drive trimming depression bar 7 to swing around the pin joint of trimming depression bar 7 with frame 1.
It is provided with two installing hole 1a being coaxially disposed in frame 1, is fixed with axle sleeve 9a in installing hole 1a, wears in axle sleeve 9a
It is provided with movable axis 9 and movable axis 9 can move in axle sleeve 9a, movable axis 9 is fixedly connected with trimming crank 8.On main shaft 2
It is fixedly connected with trimming cam 6, the end face of trimming cam 6 has non-circular cannelure 6a.Trimming crank 8 is positioned at trimming
Between cam 6 and trimming depression bar 7, in trimming crank 8 being provided be embedded into cannelure 6a and can be in cannelure 6a
The contact 8a of movement.Contact 8a could be arranged to roll the roller being connected on trimming crank 8, it is also possible to is fixing connection
Cylinder at trimming crank 8.One end of trimming crank 8 is fixedly connected on the middle part of movable axis 9.One end of movable axis 9 is back
Position end 9b and be arranged with return spring 9c, return end 9b and contact 8a is positioned at the same side of trimming crank 8；Return spring 9c's
One end is resisted against on axle sleeve 9a, and the other end of return spring 9c is resisted against on trimming crank 8.Movable axis 9 penetrate in axle sleeve 9a and
Stifled whelk nail it is fixedly connected with on the inner hole wall of this axle sleeve 9a.The other end of movable axis 9, for being pushed away end 9d, is pushed away end 9d and is passed axle
Being arranged with back-up ring, packing ring one and packing ring two from trimming crank 8 successively to this axle sleeve 9a on set 9a and movable axis 9, its guide ring is solid
It is scheduled on movable axis 9 and is resisted against on trimming crank 8.The movable end of trimming depression bar 7 is resisted against movable axis 9 by the end face pushing away end 9d
On；Movable axis 9 on the end face of end 9d, be there is the ballhead 9d1 of spherical in shape by pushing away, the movable end of trimming depression bar 7 is flat board
Shape, ballhead 9d1 is resisted against the plane of trimming depression bar 7 movable end.Certainly return spring 9c can also be extension spring, return spring 9c
One end be fixedly connected on frame 1, the other end of return spring 9c is fixedly connected on trimming crank 8, and return spring 9c position
Between trimming crank 8 and trimming depression bar 7, say, that when return spring 9c is extension spring, return spring 9c and contact 8a
Lay respectively at the side that trimming crank 8 is contrary.
When motor shaft 3a rotate make the roller 5c on trimming push rod 5 conflict trimming depression bar 7 arc surface 7a on thus
Drive trimming depression bar 7 around the pin joint of trimming depression bar 7 with frame 1 swing time, trimming depression bar 7 movable end acts on movable axis 9
Pushed away end 9d on and make movable axis 9 move to return end 9b.When movable axis 9 moves to return end 9b on trimming crank 8
Contact 8a can be embedded in the cannelure 6a of trimming cam 6.The other end of trimming crank 8 connects trimming connecting rod 17, cuts
Line connecting rod 17 is connected with thread cutting mechanism of sewing machine, when in contact 8a is embedded into cannelure 6a and when moving in cannelure 6a,
Trimming crank 8 around the axis oscillating of movable axis 9, thus can drive trimming connecting rod 17 action and realize thread trimmer motion, i.e.
Realize the trimming action of sewing machine.Also being fixedly connected with depression bar location-plate 11 and crank location-plate 12 in frame 1, depression bar positions
Limited location groove 11a on plate 11, trimming depression bar 7 moves in stopper slot 11a.There is location division 8b, when trimming is bent on trimming crank 8
Handle 8 location division 8b when movable axis 9 axis rotates can be resisted against on crank location-plate 12.
The motor shaft 3a of motor 3 installs and regulates according to the needs of actual design when lifting belling wheel 4 and trimming push rod 5
The phase relation that they rotate.During sewing machine work, lift belling wheel 4 and be in and make presser feet keep impaction state and trimming can not be triggered
Position, presser feet coordinate with feeding tooth by sewing compress, the motor 3 no longer work in the drive mechanism of lifting pressre of sewing machine and trimming
Make motor shaft 3a stop operating make presser feet impaction state keep and trimming can not trigger, now main shaft 2 rotate drive shank with
And the eedle on shank moves up and down and realizes the feeding of suture.At the end of the sewing just of sewing machine, presser feet is still within
Impaction state, position when the most now the rotation phase of motor shaft 3a is to make presser feet be in impaction state and can not trigger trimming,
At this moment motor 3 is started working, and motor shaft 3a rotates and drives trimming push rod 5 to rotate so that the roller 5c on trimming push rod 5 movable end
Can conflict on the arc surface 7a of trimming depression bar 7 and drive what the movable end of trimming depression bar 7 was applied to movable axis 9 to be pushed away end 9d
On, make movable axis 9 and trimming crank 8 move to the return end 9b of movable axis 9, and make the contact 8a on trimming crank 8 embed
In cannelure 6a, contact 8a can move after being embedded into cannelure 6a in cannelure 6a, and contact 8a is in cannelure 6a
During movement, drive trimming crank 8 is around the axis oscillating of movable axis 9, so that trimming connecting rod 17 moves and drives thread trimmer
Motion realizes the trimming of sewing machine.When trimming push rod 5 turn to its movable end separate with trimming depression bar 7 time, at return spring 9c
Effect under, movable axis 9 and trimming crank 8 are moved to pushing away end 9d, and contact 8a departs from trimming cam 6 and returns to initial bit
Putting, trimming action stops.When sewing machine no longer carries out trimming, motor shaft 3a rotates drive and lifts belling wheel and 4 be rotated further, and lifts pressure
Cam 4 is rotated further so that the sliding shoe 15a contacted all the time with its sidewall moves upward, thus drives and lift handle 15 of buckling around it
The pin joint hinged with motor 3 casing swings, and makes to lift pressure connecting rod 16 action and drives presser feet lifting, such presser foot lifter and trimming action
Complete.During continuation sewing, motor shaft 3a rotation continuation drive is lifted belling wheel 4 and is rotated and make presser feet decline be in impaction state, this
Time motor shaft 3a on trimming push rod 5 the most do not conflict on trimming depression bar 7, motor 3 quits work, presser feet keep impaction state and
Do not trigger trimming.
It is respectively fixedly connected with at the two ends of the motor shaft 3a of motor 3 simultaneously and lifts belling wheel 4 and trimming push rod 5, and set and lift pressure
Phase relation when cam 4 and trimming push rod 5 rotate, it can be ensured that the movable end of trimming push rod 5 is conflicted and touched on trimming depression bar 7
Send out sewing machine to carry out lifting during trimming action the position of belling wheel 4 and be in and make presser feet impaction state, and ensure that when trimming push rod 5
Movable end and trimming depression bar 7 separately trimming just make to lift belling when stopping and taking turns 4 and start to drive presser feet lifting, improve sewing machine and cut
The accuracy of line.In being embedded into the cannelure 6a of trimming cam 6 further through contact 8a and make contact 8a in cannelure 6a
Mobile driving trimming, drives trimming to improve the accuracy of trimming by main shaft 2.And by lifting belling wheel 4 and trimming push rod 5
A public motor 3 and drive trimming can reduce lifting pressre of sewing machine and trimming with main shaft 2 drive mechanism in frame 1
Space occupancy.
Specific embodiment described herein is only to this utility model spirit explanation for example.This utility model institute
Belong to those skilled in the art described specific embodiment to make various amendment or supplement or use similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (10)
1. lifting pressre of sewing machine and the drive mechanism of trimming, is arranged in the frame (1) of sewing machine, including main shaft (2) and solid
The motor (3) being scheduled in frame (1), the motor shaft (3a) of described motor (3) is fixedly connected with and lifts belling wheel (4), its feature
Being, the motor shaft (3a) of described motor (3) is additionally provided with trimming push rod (5), and described frame is hinged with trimming depression bar on (1)
(7), the fixing end of described trimming push rod (5) is fixing with the motor shaft (3a) of motor (3) to be connected, the work of described trimming push rod (5)
Moved end trimming depression bar (7) of can conflicting is upper and drive trimming depression bar (7) around the pin joint of trimming depression bar (7) Yu frame (1)
Swing；Be equipped with movable axis (9) in described frame (1), described movable axis (9) be fixedly connected with trimming crank (8), described in cut
The movable end of line depression bar (7) is resisted against on the end face of movable axis (9)；Trimming cam (6) it is fixedly connected with on described main shaft (2),
Described trimming crank (8) is positioned between trimming cam (6) and trimming depression bar (7)；Have on the end face of described trimming cam (6) in
Non-circular cannelure (6a), in described trimming crank (8) being provided be embedded into cannelure (6a) and can be in annular
The contact (8a) of movement in groove (6a), described in described trimming depression bar (7) promotion movable axis (9) is when frame (1) is the most mobile
Contact (8a) is embedded in cannelure (6a)；It is provided with making contact between described trimming crank (8) and frame (1)
(8a) return spring (9c) of cannelure (6a) is departed from.
Lifting pressre of sewing machine the most according to claim 1 and the drive mechanism of trimming, it is characterised in that described frame (1)
On be provided with two installing holes being coaxially disposed (1a), be fixed with axle sleeve (9a), described axle sleeve (9a) in described installing hole (1a)
Inside it is equipped with described movable axis (9) and described movable axis (9) can move, in described movable axis (9) in axle sleeve (9a)
Portion is fixing with one end of trimming crank (8) to be connected, and one end of described movable axis (9) is return end (9b) and is arranged with described return
Spring (9c), one end of described return spring (9c) is resisted against on axle sleeve (9a), the other end of described return spring (9c) against
On trimming crank (8)；The other end of described movable axis (9) for be pushed away end (9d), the movable end of described trimming depression bar (7) against
At movable axis (9) by pushing away on the end face of end (9d)；Described return end (9b) is positioned at the same of trimming crank (8) with contact (8a)
Side and when movable axis (9) to return end (9b) time mobile contact (8a) on described trimming crank (8) trimming can be embedded into
In the cannelure (6a) of cam (6).
Lifting pressre of sewing machine the most according to claim 2 and the drive mechanism of trimming, it is characterised in that described trimming push rod
(5) it is arranged with roller (5c) on movable end, the sidewall of described trimming depression bar (7) arranges arc surface (7a), described roller
(5c) can conflict on described arc surface (7a)；Contact (8a) on described trimming crank (8) is set to rolling and is connected to
Roller on trimming crank (8).
Lifting pressre of sewing machine the most according to claim 2 and the drive mechanism of trimming, it is characterised in that described movable axis
(9) by pushing away the ballhead (9d1) on the end face of end (9d) with spherical in shape, the movable end of described trimming depression bar (7) is in putting down
Tabular, described ballhead (9d1) is resisted against in the plane of trimming depression bar (7) movable end.
5. according to the arbitrary described lifting pressre of sewing machine of claim 1-4 and the drive mechanism of trimming, it is characterised in that described in cut
Line depression bar (7) is provided with torsion spring (10) with the hinged place of frame (1).
6. according to the arbitrary described lifting pressre of sewing machine of claim 1-4 and the drive mechanism of trimming, it is characterised in that described electricity
Machine (3) is double output shaft electric machines, one end of the motor shaft (3a) of described motor (3) for lifting pressure side (3b), described in lift pressure side (3b) and consolidate
Determine connection have described in lift belling wheel (4), the other end of the motor shaft (3a) of described motor (3) is trimming end (3c), described trimming
End (3c) is fixedly connected with described trimming push rod (5).
Lifting pressre of sewing machine the most according to claim 6 and the drive mechanism of trimming, it is characterised in that described motor shaft
(3a) location plane one (3b1) and location plane two it are respectively arranged with on the lateral surface lifting pressure side (3b) and trimming end (3c)
(3c1) lift belling wheel (4) described in, and be set in that to lift pressure side (3b) upper and be fixedly connected on by securing member one (4a) and lift pressure side
(3b), described in lift belling wheel (4) sidewall on be provided with location hole one (4b), described securing member one (4a) through location hole one
(4b) it is resisted against on location plane one (3b1)；The fixed end cap of described trimming push rod (5) is located at trimming end (3c) and above and passes through tight
Firmware two (5a) is fixedly connected on trimming end (3c), and the sidewall of the fixing end of described trimming push rod (5) is provided with hole two, location
(5b), described securing member two (5a) is resisted against on location plane two (3c1) through hole two, location (5b).
8. according to the arbitrary described lifting pressre of sewing machine of claim 1-4 and the drive mechanism of trimming, it is characterised in that described machine
Depression bar location-plate (11) also it is fixedly connected with on frame (1), the upper limited location groove (11a) of described depression bar location-plate (11), described trimming
Depression bar (7) moves in stopper slot (11a).
Lifting pressre of sewing machine the most according to claim 2 and the drive mechanism of trimming, it is characterised in that described frame (1)
On be also fixedly connected with crank location-plate (12), described trimming crank (8) has location division (8b), when described trimming crank
(8) when movable axis (9) axis rotates, described location division (8b) can be resisted against on crank location-plate (12).
Lifting pressre of sewing machine the most according to claim 1 and the drive mechanism of trimming, it is characterised in that described motor shaft
(3a) pressure side (3b) of lifting also is fixedly connected with sensing chip (13), the casing of described motor (3) is fixed with and sensing chip (13)
With the use of induction apparatus (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620738335.8U CN205803779U (en) | 2016-07-11 | 2016-07-11 | Lifting pressre of sewing machine and the drive mechanism of trimming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620738335.8U CN205803779U (en) | 2016-07-11 | 2016-07-11 | Lifting pressre of sewing machine and the drive mechanism of trimming |
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| Publication Number | Publication Date |
|---|---|
| CN205803779U true CN205803779U (en) | 2016-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620738335.8U Active CN205803779U (en) | 2016-07-11 | 2016-07-11 | Lifting pressre of sewing machine and the drive mechanism of trimming |
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| CN (1) | CN205803779U (en) |
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| CN106948096A (en) * | 2017-05-10 | 2017-07-14 | 杰克缝纫机股份有限公司 | A kind of sewing machine thread-trimming lifter-presser foot device and sewing machine |
| CN107475917A (en) * | 2017-09-16 | 2017-12-15 | 拓卡奔马机电科技有限公司 | A kind of induction mechanism and sewing machine of cam origin |
| CN108677399A (en) * | 2018-07-16 | 2018-10-19 | 浙江美机缝纫机有限公司 | A kind of sewing machine and its thread-trimming lifter-presser foot device |
| CN109957893A (en) * | 2017-12-22 | 2019-07-02 | 浙江中捷缝纫科技有限公司 | Driving structure of sewing and the sewing machine with it |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106868735A (en) * | 2017-04-01 | 2017-06-20 | 杰克缝纫机股份有限公司 | A kind of automatic shearing mechanism and sewing machine |
| CN106868735B (en) * | 2017-04-01 | 2022-04-12 | 杰克科技股份有限公司 | Automatic thread trimming mechanism and sewing machine |
| CN106948096A (en) * | 2017-05-10 | 2017-07-14 | 杰克缝纫机股份有限公司 | A kind of sewing machine thread-trimming lifter-presser foot device and sewing machine |
| CN107475917A (en) * | 2017-09-16 | 2017-12-15 | 拓卡奔马机电科技有限公司 | A kind of induction mechanism and sewing machine of cam origin |
| CN109957893A (en) * | 2017-12-22 | 2019-07-02 | 浙江中捷缝纫科技有限公司 | Driving structure of sewing and the sewing machine with it |
| CN108677399A (en) * | 2018-07-16 | 2018-10-19 | 浙江美机缝纫机有限公司 | A kind of sewing machine and its thread-trimming lifter-presser foot device |
| CN108677399B (en) * | 2018-07-16 | 2023-12-01 | 浙江美机缝纫机有限公司 | Sewing machine and thread cutting and presser foot lifting device thereof |
| CN110983644A (en) * | 2019-12-23 | 2020-04-10 | 杰克缝纫机股份有限公司 | Sewing machine trimming and thread loosening pressure foot lifting and pressure foot pressure adjusting device and sewing machine |
| CN110983644B (en) * | 2019-12-23 | 2021-07-30 | 杰克缝纫机股份有限公司 | Sewing machine trimming and thread loosening pressure foot lifting and pressure foot pressure adjusting device and sewing machine |
| CN112962230A (en) * | 2021-01-29 | 2021-06-15 | 拓卡奔马机电科技有限公司 | Lifting and pressing thread shearing mechanism, control method and sewing machine |
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Effective date of registration: 20200928 Address after: 198 Xinggang East Road, Damaiyu street, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: ZHEJIANG ZOJE SEWING MACHINE Co.,Ltd. Address before: 317604, Taizhou, Zhejiang province Yuhuan County barley island Street Hing Tung Road, No. 198 Patentee before: ZHEJIANG ZOJE SEWING MACHINE Co.,Ltd. Patentee before: ZHEJIANG JOYEE SEWING MACHINE Co.,Ltd. Patentee before: ZHEJIANG BSM SEWING MACHINE Co.,Ltd. |
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| TR01 | Transfer of patent right |