A kind of sewing machine of stepper motor feeding
Technical field
The invention belongs to field of mechanical technique, are related to a kind of sewing machine more particularly to a kind of sewing of stepper motor feeding
Machine.
Background technology
Roller sewing machine is a kind of common industrial sewing machine, and existing roller sewing machine feed device includes with upper drawing-inroller
Upper feeding material component and lower feeding material component with lower drawing-inroller, upper drawing-inroller make cloth clamp in the two with the mutual cooperation of lower drawing-inroller
Centre carries out feeding by the rotation of upper drawing-inroller and lower drawing-inroller.
As Chinese patent once disclosed in a kind of roller sewing machine roller press just backstitching Qu Dongjigou [The patent No.:
ZL201110339446.3;Authorization Notice No.:CN102505364B], it includes being set on the body of sewing machine and and idler wheel
Component is connected, which includes actuator, idler wheel connection lever and connector and guide part for being connected with roll wheel assembly, rolling
Wheel connection lever middle is hinged on body, and the both ends of idler wheel connection lever are hinged with actuator and connector respectively, are oriented to
Part is connected on body, and guide sleeve is equipped with the spring for making connector have the trend that moves down, driving on the coupling, at actuator
Part is electromagnet, connector include be hinged on idler wheel connection lever end guide rod and guide rod be in guide part, guiding
A upper joint-shaft is connected on bar, coaxial being provided in upper joint-shaft lower part connects under capable of being translated relative to upper joint-shaft axis direction
Axis, bottom spindle can be rotated relative to upper joint-shaft, and there are engagement teeth one, bottom spindle end to have energy and engaging tooth for upper joint-shaft end
The engagement teeth two that tooth one is meshed have the Power Component that it can be driven to one-directionally rotate on upper joint-shaft.
This just backstitching driving mechanism just as when, electromagnet no power, the expansion force of spring will engage teeth one and engage
Teeth two engage, and power is transferred to roll wheel assembly by bottom spindle, idler wheel is made to rotate by upper joint-shaft, at this time idler wheel and setting
In the feeding together of the drawing-inroller on roller car bottom plate;And when backstitching, electromagnet is powered so that upper joint-shaft and bottom spindle disengaging, are nibbled
Close teeth one and detached with teeth two are engaged, the power of upper joint-shaft can not be transferred on bottom spindle, idler wheel then at free state,
Only rely on drawing-inroller and rotate backward and backstitch feeding to realize, but since idler wheel does not rotate, only lean on the teeth of feeding wheel surface with
Cloth carries out being easy to occur slip teeth phenomenon during feeding with credit union on one side.
A kind of for another example Chinese patent once disclosed Feng Renjisongliaozhuanzhi [Application number:201510001473.8;Application bulletin
Number:CN104674464A], it include have roller press upper feeding group and with the matched drawing-inroller of roller press
Lower feeding group, lower feeding group include holder group, lower stepper motor, the underdrive being connected with lower motor by the first transmission component
Axis, lower drive shaft are connected by the second transmission component with drawing-inroller, and upper feeding group includes upper stepper motor, with upper stepper motor
The transmission shaft group that is connected by universal joint with transmission mechanism of the output shaft transmission mechanism, the one end that are connected, with transmission shaft
The roller press component that is separatably connected of the other end of group, output shaft and the transmission shaft group of upper stepper motor pass through universal
Section is connected, which drives pressure wheel using upper stepper motor, and lower stepper motor drives drawing-inroller,
Just, backstitch when make pressure wheel and drawing-inroller coordinate to carry out feeding simultaneously, but also due to pressure wheel with drawing-inroller is logical respectively
It crosses what motor was individually driven, therefore can not ensure the rotation synchronism of pressure wheel and drawing-inroller in feeding, lead to feeding
Stability it is still not high.
Invention content
The purpose of the present invention is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of stepper motor feeding
The technical issues of sewing machine, solution is how to improve the stability of feeding.
Object of the invention can be realized by the following technical scheme:
A kind of sewing machine of stepper motor feeding, including bottom plate and the fuselage that is set on bottom plate, the head of the fuselage
The upper transmission group for including upper drawing-inroller equipped with upper feeding material component, the upper feeding material component at portion and being connected with upper drawing-inroller,
The bottom plate is equipped with lower feeding material component, and the lower feeding material component includes lower drawing-inroller and is connected with lower drawing-inroller
Underdrive group, which is characterized in that be equipped with upper transmission shaft, the front end of the upper transmission shaft and upload in the fuselage in an axial direction
Dynamic group is connected, the feeding motor for being equipped with lower drive shaft in an axial direction in the bottom plate and lower drive shaft capable of being driven to rotate, described
The front end of lower drive shaft be connected with underdrive group, transmission can be made by being equipped between the upper transmission shaft and lower drive shaft
The synchronous drive mechanism that axis is rotated synchronously with lower drive shaft.
Just as when, feeding motor rotation, drive lower drive shaft rotate simultaneously power is transferred to by lower feeding by underdrive group
On wheel, lower drawing-inroller is made to rotate, and be equipped with synchronous drive mechanism between lower drive shaft and upper transmission shaft, therefore when feeding electricity
Machine drives makes upper transmission shaft that turn in the same direction with lower drive shaft also occur while lower drive shaft rotation by synchronous drive mechanism
Dynamic, upper transmission shaft drives upper drawing-inroller to generate and the rotation in the same direction of lower drawing-inroller by upper transmission group.When backstitching, feeding motor band
Dynamic lower drive shaft rotates backward, also due to the effect of synchronous drive mechanism so that upper transmission shaft can be synchronous with lower drive shaft
It rotates in same direction, so that upper drawing-inroller and lower drawing-inroller rotate synchronously to carry out feeding.
The sewing machine of this stepper motor feeding is by the upper transmission shaft of setting, lower drive shaft and synchronous drive mechanism, just
When meeting or backstitching feeding, by the effect of synchronous drive mechanism single feeding motor simultaneously passes upper transmission shaft under
The rotation of moving axis forms control, with reach upper drawing-inroller and lower drawing-inroller synchronize rotate in same direction, to which formation is to the steady of cloth
Fixed conveying, improves the stability of feeding.
In the sewing machine of above-mentioned stepper motor feeding, the synchronous drive mechanism includes after being fixed on transmission shaft
The upper connection gear of end, the lower connection gear and synchronous belt for being fixed on lower drive shaft rear end, the synchronous belt are arranged
In upper connection gear and lower connection gear.
Feeding motor drives lower drive shaft rotation, being capable of easily band by synchronous belt while lower drive shaft rotates
The rotation that dynamic upper transmission shaft synchronizes in the same direction, thus upper drawing-inroller and lower drawing-inroller can rotate synchronously to play stable feeding
Purpose, and using synchronous belt carry out transmission so that structure it is also fairly simple.
In the sewing machine of above-mentioned stepper motor feeding, the anti-skidding of several protrusions is evenly equipped on the inside of the synchronous belt
Pad.Non-slip mat is set on the inside of synchronous belt primarily to preventing from having skidded between synchronous belt and upper transmission shaft or lower drive shaft
Phenomenon, and the synchronous rotation of upper transmission shaft and lower drive shaft is influenced, stability when to feeding impacts.
In the sewing machine of above-mentioned stepper motor feeding, as another situation, the synchronous drive mechanism includes
The lower connection gear and synchromesh gear for being fixed on the upper connection gear of transmission shaft rear end, being fixed on lower drive shaft rear end
Group, the upper connection gear and lower connection gear are engaged with synchromesh gear group.
Feeding motor drives lower drive shaft rotation, and upper tooth connection is driven by synchromesh gear group while lower drive shaft rotates
Wheel is rotated with upper transmission shaft, and upper transmission shaft is able to synchronize rotation in the same direction with lower drive shaft, and finally make drawing-inroller with
Lower drawing-inroller, which synchronizes, to be rotate in same direction and carries out stablizing feeding.
In the sewing machine of above-mentioned stepper motor feeding, the upper transmission shaft is located at same vertical flat with lower drive shaft
In face, the upper connection gear is arranged with lower connection gear face and the size and the number of teeth of upper connection gear and lower connection gear
It is identical.
Upper transmission shaft is located at lower drive shaft in same perpendicular, and upper connection gear is arranged with lower connection gear face,
It ensure that the stability of synchronous belt or the work of synchromesh gear group.The size and number of teeth phase of upper connection gear and lower connection gear
Together, can making upload moving axis, rotating speed during rotation is identical with lower drive shaft.It can ensure that upper transmission shaft is passed under in this way
Moving axis realization preferably rotates synchronously, and to keep upper drawing-inroller and upper drawing-inroller feeding more stable, improves stepper motor feeding
Sewing machine feeding stability.
In the sewing machine of above-mentioned stepper motor feeding, the fuselage is had using being integrally formed in the fuselage
There are support plate one, the support plate one to be equipped with supported hole one, the upper transmission shaft passes through supported hole one and in upper transmission
Spring bearing is equipped between axis and supported hole one.
The sewing machine of this stepper motor feeding is realized by the upper transmission shaft of setting, lower drive shaft and synchronous drive mechanism
The synchronous rotation of drawing-inroller and lower drawing-inroller, but due to not installing the position of transmission shaft on common fuselage, so
In order to realize that the installation of upper transmission shaft has redesigned integrally formed fuselage, and support plate one is set to support on fuselage
Transmission shaft, while making transmission shaft that spring bearing is set across supported hole one and upper transmission shaft and supported hole one, in this way
Upper transmission shaft is just installed on fuselage and can steadily be rotated in fuselage, improves the sewing machine feeding of stepper motor feeding
Stability.
Have in the sewing machine of above-mentioned stepper motor feeding, in the fuselage and is transversely mounted chamber and positioned at fuselage
Rear end and with the vertical installation cavity that is transversely mounted chamber and is connected, in the company for being transversely mounted chamber and vertical installation cavity in the fuselage
Logical place has support plate two, and supported hole two is offered in the support plate two, and the rear end of the upper transmission shaft passes through support
Hole two and between upper transmission shaft and supported hole two be equipped with spring bearing.
The support to upper transmission shaft may be implemented by the way that support plate two is arranged, supported hole two is set in support plate two, and
And spring bearing is set between upper transmission shaft and supported hole two, so that transmission shaft is steadily rotated in fuselage, improves feeding
Stability.If support plate one and support plate two are arranged simultaneously, upload moving axis can be made to be rotated in fuselage more stable,
The stability of feeding can more be improved.Support plate two is arranged in the connectivity part for being transversely mounted chamber and vertical installation cavity, is rationally utilized
Limited space in fuselage, makes fuselage arrangement compact and reasonable.
Compared with prior art, the present invention has the following advantages:
Pass through the upper transmission shaft of setting, lower drive shaft and synchronous drive mechanism so that single feeding motor can be right simultaneously
The rotation of upper transmission shaft and lower drive shaft forms control, make drawing-inroller and lower drawing-inroller realize synchronize rotate in same direction, thus right
Cloth forms stable conveying, improves the stability of feeding.By the upper connection gear of setting, lower connection and synchronous belt or
Synchromesh gear group realizes the synchronous rotation between transmission shaft and lower drive shaft, improves the stability of feeding.By will be upper
Transmission shaft is arranged with lower drive shaft in same perpendicular, and upper connection gear and lower connection gear face are arranged, and will
The size and the number of teeth of upper connection gear and lower connection gear are set as identical, further ensure transmission shaft and lower drive shaft it
Between synchronous rotation, improve the stability of feeding.By the way that support plate one and support plate two are arranged on integrally formed fuselage
And using the upper transmission shaft of spring bearing support, transmission shaft is allow to be installed on fuselage and steadily be operated in fuselage,
Further improve the stability of feeding.
Description of the drawings
Fig. 1 is the stereogram of the sewing machine of this stepper motor feeding;
Fig. 2 is the sectional view of the sewing machine of this stepper motor feeding;
Fig. 3 is the feeder of sewing machine of this stepper motor feeding and the schematic diagram of needle bar swinging mechanism.
In figure, 1, bottom plate;2, fuselage;2a, support plate one;2a1, supported hole one;2b, support plate two;2b1, supported hole two;
2c, spring bearing;2d, it is transversely mounted chamber;2e, vertical installation cavity;3, upper feeding material component;3a, upper drawing-inroller;3b, upper transmission group;
3b1, gear axis one;3b2, universal joint one;3b3, spline coupling;3b4, universal joint two;3b5, gear axis two;3c, on
Drawing-inroller fixed seat;3d, presser bar;4, lower feeding material component;4a, lower drawing-inroller;4b, underdrive group;4b1, lower tooth wheel shaft one;
4b2, lower coupler;4b3, lower tooth wheel shaft two;4c, lower drawing-inroller fixed seat;4d, holder;5, upper transmission shaft;6, lower drive shaft;
6a, lower drive shaft gear;7, feeding motor;7a, feeding motor gear;8, synchronous drive mechanism;8a, upper connection gear;8b, under
Connection gear;8c, synchronous belt;9, needle bar swinging mechanism;9a, oscillating motor;9b, synchronous belt is swung;9c, swinging axle;9d, swing
Frame;9e, shank.
Specific implementation mode
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
Embodiment one
As shown in Figure 1, Figure 2 and Figure 3, the sewing machine of stepper motor feeding includes bottom plate 1 and the machine that is set on bottom plate 1
Body 2.Fuselage 2 using being integrally formed, have in fuselage 2 be transversely mounted chamber 2d and positioned at 2 rear end of fuselage and be transversely mounted chamber
The vertical installation cavity 2e that 2d is connected, being transversely mounted in chamber 2d for fuselage 1 have one 2a of support plate, and one 2a of support plate is equipped with branch
Support one 2a1 of hole;There is two 2b of support plate, support plate two in the connectivity part for being transversely mounted chamber 2d and vertical installation cavity 2e in fuselage 2
Two 2b1 of supported hole is offered on 2b.Bottom plate 1 be equipped with lower feeding material component 4, lower feeding material component 4 include lower drawing-inroller 4a and under pass
Dynamic group 4b, underdrive group 4b includes one 4b1 of lower tooth wheel shaft, lower coupler 4b2 and two 4b3 of lower tooth wheel shaft.Lower drawing-inroller 4a rotations
It is connected on lower drawing-inroller fixed seat 4c, lower drawing-inroller fixed seat 4c is fixedly connected on holder 4d, and holder 4d is fixedly connected on
On bottom plate 1.The upper end of one 4b1 of lower tooth wheel shaft pass through lower drawing-inroller fixed seat 4c and the upper end lateral surface of one 4b1 of lower tooth wheel shaft with
Lower drawing-inroller 4a side gears engagement, the lower end of one 4b1 of lower tooth wheel shaft is connected to the upper end of lower coupler 4b2, lower coupler 4b2
Lower end be connected to the upper end of two 4b3 of lower tooth wheel shaft.One 4b1 of lower tooth wheel shaft, lower coupler 4b2 and two 4b3 of lower tooth wheel shaft pacify
In holder 4d and their axis collinear.Lower drive shaft 6 is equipped in bottom plate 1 in an axial direction and 6 turns of lower drive shaft can be driven
Dynamic feeding motor 7;It is engaged with the lateral surface gear of 6 front end of lower drive shaft in the lower end outside face of two 4b3 of lower tooth wheel shaft.Feeding electricity
It is fixed with feeding motor gear 7a on the motor shaft of machine 7, lower drive shaft gear 6a, feeding motor tooth are fixed on lower drive shaft 6
Wheel 7a is engaged with lower drive shaft gear 6a;Feeding motor gear 7a and lower drive shaft gear 6a are bevel gear, and feeding motor 7
Motor shaft it is vertical with lower drive shaft 6.When the motor shaft of feeding motor 7 rotates in this way, rotational motion can be passed to down and be passed
Moving axis 6.
Upper feeding material component 3 is equipped at the head of fuselage 2, upper feeding material component 3 includes facing setting with lower drawing-inroller 4a
Upper drawing-inroller 3a and the upper transmission group 3b being connect with upper drawing-inroller 3a, upper transmission group 3b include one 3b1 of gear axis, universal joint one
3b2, two 3b5 of spline coupling 3b3, two 3b4 of universal joint and gear axis.Upper drawing-inroller 3a is rotatably connected on drawing-inroller and fixes
On seat 3c, upper drawing-inroller fixed seat 3c is fixedly connected on presser bar 3d, and presser bar 3d is connected on fuselage 2.Gear axis one
The lower end of 3b1 is across upper drawing-inroller fixed seat 3c and the lower end outside face of one 3b1 of gear axis and upper drawing-inroller 3a side gears
Engagement, the upper end of one 3b1 of gear axis are connected on one 3b2 of universal joint, and one 3b2 of universal joint is connected to spline coupling again simultaneously
The upper end of the lower end of 3b3, spline coupling 3b3 is connected on two 3b4 of universal joint, and two 3b4 of universal joint is connected to lower tooth again simultaneously
The upper end of two 4b3 of wheel shaft.Upper transmission shaft 5, upper end lateral surface and the upper transmission of two 3b5 of gear axis are equipped in fuselage 2 in an axial direction
The lateral surface gear of 5 front end of axis engages.The middle part of upper transmission shaft 5 passes through one 2a1 of supported hole, the rear end of upper transmission shaft 5 to pass through branch
Two 2b1 of hole is supportted, and spring bearing 2c is respectively equipped between two 2b1 of upper transmission shaft 5 and one 2a1 of supported hole and supported hole.
Spline coupling 3b3 includes the splined shaft and spline housing of spline fitted, splined shaft and spline housing respectively with universal joint
Two 3b4 are connected with one 3b2 of universal joint or splined shaft and spline housing are connect with one 3b2 of universal joint and two 3b4 of universal joint respectively,
Splined shaft can axially move up and down in spline housing along spline housing.One 3b2 of universal joint, spline coupling 3b3 and universal joint two
3b4 constitutes the telescopic Hooks coupling universal coupling with spline pair.Generally require to put down at the end of sewing starts either or
Drawing-inroller 3a allows drawing-inroller 3a in lifting and lower drawing-inroller 4a compresses cloth or unclamps cloth;Or the mistake in sewing
Cheng Zhong adjusts the height of upper drawing-inroller 3a according to the thickness of cloth.Upper drawing-inroller 3a is during rising or decline, spline
Axis only can be flexible up and down in spline housing, to not interfere with biography of the upper feeding material component 3 to upper transmission shaft 5 movement and torque
It passs, does not interfere with the stability of the work of feeding material component 3.
Upper transmission shaft 5 is located at lower drive shaft 6 in same perpendicular, and energy is equipped between upper transmission shaft 5 and lower drive shaft 6
The synchronous drive mechanism 8 for enough making transmission shaft 5 be rotated synchronously with lower drive shaft 6.Synchronous drive mechanism 8 includes being fixed on transmission
The upper connection gear 8a of 5 rear end of axis, the lower connection gear 8b and synchronous belt 8c for being fixed on 6 rear end of lower drive shaft, it is synchronous
Band 8c is set on connection gear 8a and lower connection gear 8b;Synchronous belt 8c can also be replaced with synchromesh gear group, make company
It meets gear 8a and lower connection gear 8b is engaged with synchromesh gear group.Upper connection gear 8a is arranged with lower connection gear 8b faces,
And upper connection gear 8a is identical as the size of lower connection gear 8b and the number of teeth.In order to prevent synchronous belt 8c work when with upper tooth connection
Generation is skidded to influence the stable operation of synchronous drive mechanism 8, on the inside of synchronous belt 8c between taking turns 8a and lower connection gear 8b
The non-slip mat of uniformly distributed several protrusions.
Feeding motor 7, lower drive shaft 6, lower feeding material component 4, upper feeding material component 3, upper transmission shaft 5 and synchronous drive mechanism 8
Constitute the feed device of the sewing machine of stepper motor feeding.Just as when, feeding motor 7 rotate simultaneously drive lower drive shaft 6 rotate,
Power is transferred to lower drawing-inroller 4a by lower drive shaft 6 by underdrive group 4b, and lower drawing-inroller 4a rotates.Because of lower drive shaft
Synchronous drive mechanism 8 is equipped between 6 and upper transmission shaft 5, so when feeding motor 7 drives lower drive shaft 6 to rotate, lower drive shaft
6 make upper transmission shaft 5 synchronize generation and the rotation in the same direction of lower drive shaft 6 by synchronous drive mechanism 8, while upper transmission shaft 5 passes through
Drawing-inroller 3a is generated and rotation in the same direction lower drawing-inroller 4a in upper transmission group 3b drivings.When backstitching, feeding motor 7 drives underdrive
Axis 6 rotates backward, and upper transmission shaft 5 is equally passed motion to by synchronous drive mechanism 8 so that upper transmission shaft 5 and underdrive
Axis 6, which synchronizes, to be rotate in same direction so that upper drawing-inroller 3a and lower drawing-inroller 4a rotates synchronously to carry out feeding.Pass through the upper transmission shaft of setting
5, lower drive shaft 6 and synchronous drive mechanism 8 so that and though just as or when backstitching feeding, can be transferred through synchronous drive mechanism 8
Effect so that single feeding motor 7 is simultaneously formed the rotation of upper transmission shaft 5 and lower drive shaft 6 controls so that upper drawing-inroller
3a and lower drawing-inroller 4a synchronize rotate in same direction, stablizing for cloth is conveyed to be formed, improves the stability of feeding.
Upper drawing-inroller 3a and lower drawing-inroller 4a synchronize rotate in same direction and drive upper cloth between drawing-inroller 3a and lower drawing-inroller 4a
Material movement, will also coordinate the line sending structure of the sewing machine of stepper motor feeding to complete the suture of cloth.As shown in Figures 2 and 3,
Line sending structure includes needle bar swinging mechanism 9, needle bar swinging mechanism 9 includes oscillating motor 9a, swing synchronous belt 9c, swinging axle 9c,
Swing span 9d and shank 9e.Oscillating motor 9a is fixedly connected on fuselage 2, and the motor shaft of oscillating motor 9a is parallel with swinging axle 9c
Setting swings the rear end that synchronous belt 9c is set in motor shaft and swinging axle 9c simultaneously, and the front end of swinging axle 9c is fixedly connected with pendulum
The shank 9e that can be moved up and down in swing span 9d is equipped on moving frame 9d, swing span 9d.The motor shaft of oscillating motor 9a is just
When to reversed reciprocating rotation, swinging axle 9c Direct/Reverse reciprocating rotations can be made by synchronous belt 8c, to make swing span 9d and
Shank 9e reciprocally swingings.Shank 9e is additionally attached to shank simultaneously and drives upside down in mechanism and (do not drawn in attached drawing), above and below shank
Driving mechanism is connect with main shaft, and main axis realizes pumping for shank 9e.Oscillating motor 9a is fixedly connected on fuselage 2
Two 2b of support plate on, and oscillating motor 9a is located between two 2b of one 2a of support plate and support plate, can make full use of in this way
The space of fuselage makes fuselage arrangement compact and reasonable.
Specific embodiment described herein is only an example for the spirit of the invention.Technology belonging to the present invention is led
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.