CN207016988U - A kind of lifting pressre of sewing machine wire shearing driving device - Google Patents
A kind of lifting pressre of sewing machine wire shearing driving device Download PDFInfo
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- CN207016988U CN207016988U CN201720866469.2U CN201720866469U CN207016988U CN 207016988 U CN207016988 U CN 207016988U CN 201720866469 U CN201720866469 U CN 201720866469U CN 207016988 U CN207016988 U CN 207016988U
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- slide bar
- sliding block
- connecting rod
- sewing machine
- roller
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Abstract
The utility model provides a kind of lifting pressre of sewing machine wire shearing driving device, belongs to sewing machine technique field.It solves the problems, such as existing presser foot lifter wire shearing driving device stability difference.The motor of this lifting pressre of sewing machine wire shearing driving device is connected on installing frame, slide bar passes through installing frame, one end of slide bar is used to be connected with loose ends device contiguous block, the other end of slide bar is used to be connected with lower trimming contiguous block, sliding block is connected on slide bar, spring housing is outside slide bar and one end of spring is resisted against on installing frame, the other end is resisted against on sliding block, cam is connected on the output shaft of motor, connecting rod is also fixed with the output shaft of motor, the outer end of connecting rod is provided with roller or bearing, the output shaft energy drivening rod rotation of motor, roller or bearing can be in contact with sliding block and overcome the elastic force of spring to promote sliding block and slide bar movement, the buffer for buffer sliding block and slide bar is also fixed with installing frame.This lifting pressre of sewing machine wire shearing driving device has stability good and the advantages of fault rate is low.
Description
Technical field
The utility model belongs to sewing machine technique field, is related to a kind of lifting pressre of sewing machine wire shearing driving device.
Background technology
The thread-trimming lifter-presser foot driving of existing sewing machine is made up of two parts, and a part drives for lower trimming, typically using gas
Cylinder or electromagnet drive lower cutting facility trimming;Another part drives for presser foot lifter, typically using small cylinder or small electromagnet band
Dynamic presser foot lifting device action.Existing is two sets of drive devices, and cost is high, space-consuming is big, and noise is big, and installation work-hour is high, and not
Beneficial to installation.
For the problem present on, people are made that miscellaneous improvement, and some has also applied for patent, such as China
Patent document data discloses sewing machine thread-trimming lifter-presser foot drive device [application number:201520285837.5;Authorization Notice No.:
CN204662030U], it includes stepper motor, shifting fork mechanism and cam, shifting fork mechanism include driving lever, fork arm, slide bar and
At least two retainer rings, driving lever one end are fixed on the main shaft of stepper motor, and the driving lever other end can extend into fork arm and stir
Fork arm is moved, and fork arm is fixed on slide bar, and slide bar is in two retainer rings and can be slided in retainer ring;Cam is fixed on step
On the main shaft of stepper motor, stepper motor is rotated jointly by main shaft band moving cam and driving lever;The movement locus and sewing machine of cam
The free end of presser foot lifter connecting rod have intersection point.
The drive device of this kind of structure can just make dead man stir fork arm movement, it is necessary to which dead man is extend into the groove of fork arm,
The connected mode of this kind of structure is, it is necessary to the precision between dead man and fork arm is very high, and the drive device of this kind of structure, in spring
In the presence of elastic force, when spring promotes fork arm, with retainer ring more fierce shock can occur for fork arm, and multiple shock is easily led
The position of fork arm is caused the problem of offset setting position to be present, dead man can not be extend into the groove of fork arm, so that this kind of structure
Drive device break down, stability is poor.
The content of the invention
The purpose of this utility model is to be directed to the above-mentioned problems in the prior art, it is proposed that a kind of lifting pressre of sewing machine
Wire shearing driving device, the technical problem of solution are how to improve the stability of drive device, reduce fault rate.
The purpose of this utility model can be realized by following technical proposal:A kind of lifting pressre of sewing machine trimming driving dress
Put, including motor, installing frame, cam, sliding block, slide bar and spring, the motor are connected on installing frame, the slide bar passes through peace
Frame up, one end of the slide bar is used to be connected with loose ends device contiguous block, and the other end of the slide bar is used for and lower trimming contiguous block
It is connected, the sliding block is connected on slide bar, and the spring housing is outside slide bar and one end of spring is resisted against on installing frame, the bullet
The other end of spring is resisted against on sliding block, and the cam is connected on the output shaft of motor, it is characterised in that the output of the motor
Connecting rod is also fixed with axle, the outer end of the connecting rod is provided with roller or bearing, the output shaft energy drivening rod rotation of the motor
Turn, the roller or bearing can be in contact with sliding block and overcome the elastic force of spring to promote sliding block and slide bar movement, the installing frame
On be also fixed with buffer for buffer sliding block and slide bar.
Sewing machine includes presser foot lifter connecting rod, and motor turns clockwise to be rotated with moving cam, connecting rod, roller or bearing, convex
Wheel contact presser foot lifter connecting rod simultaneously ejects presser foot lifter connecting rod, realizes presser foot lifter;Motor rotate counterclockwise band moving cam, connecting rod,
Roller or bearing rotate, and roller or bearing are resisted against on sliding block and overcome the elastic force of spring to move sliding block and slide bar, roller or
When promoting sliding block and slide bar moves, roller or bearing reduce friction in rotation, roller or bearing rotation in itself and make rolling bearing
Wheel or bearing and shoe contact are stable, and roller or bearing promotion sliding block movement are smooth, and stability is good, and fault rate is low, and slide bar moves
Dynamic to drive loose ends device contiguous block and the movement of lower trimming contiguous block, the thread-loosening device of loose ends device contiguous block connection realizes loose ends, under cut
The cutting facility of line contiguous block connection realizes trimming, after the completion of trimming, motor turn clockwise band moving cam, connecting rod, roller or
Bearing rotates, and loose ends device contiguous block contacts with buffer, and buffering is played a part of in the setting of buffer, moves sliding block and slide bar
With installing frame fierce shock occurs for Shi Buhui, improves the stability of drive device.And this drive device passes through connecting rod, roller
Or bearing replaces driving lever and fork arm has reeded part, ensures that roller or bearing can contact and promote sliding block, is not in miss
Operation, reduce fault rate.
In a kind of above-mentioned lifting pressre of sewing machine wire shearing driving device, the outer end of the connecting rod is fixed with bolt, institute
One end that bearing is axially positioned on bolt is stated, the madial wall of the bearing is fixedly connected with bolt, and the outer end of the connecting rod is close to axle
The side held convexes to form projection towards bearing.Bearing axially position, position will not change, and bearing and shoe contact simultaneously promote sliding block
When mobile, bearing itself is rotating around bolt, is rolling friction between bearing and sliding block, relative to sliding friction frictional force
Low, it is smooth that bearing promotes sliding block to move, and stability is good, and fault rate is low.
As another situation, in a kind of above-mentioned lifting pressre of sewing machine wire shearing driving device, the outer end of the connecting rod
Portion is fixed with bolt, and the roller housing has gap outside bolt and between the roller and the bar portion of bolt, the roller
The head clearance of one end and bolt coordinates, and the other end of the roller and the outer end gap of connecting rod coordinate.Roller connects with sliding block
When touching and promoting the sliding block to move, roller itself is rotating around bolt, is rolling friction between roller and sliding block, relative to slip
Friction is low, and it is smooth that roller promotes sliding block to move, and stability is good, and fault rate is low.
In a kind of above-mentioned lifting pressre of sewing machine wire shearing driving device, the bar portion of the bolt is included with externally threaded
The smooth roll segment of thread segment and surface, the roller housing is outside roll segment.The surface of roll segment is smooth, and roller housing is in roll segment
Make the frictional force between roller and bolt small outside, when roller contacts and promotes the sliding block to move, roller rolls smooth, will not block,
Stability is improved, reduces fault rate.
In a kind of above-mentioned lifting pressre of sewing machine wire shearing driving device, the bolt is fixedly connected with by nut and connecting rod,
The outer end of the connecting rod has the insertion breach for nut insertion, the side wall semicircular in shape of the embedded breach.Embedded breach
Setting be embedded in for nut, nut is not protruded outside connecting rod, reasonable utilization space, the side wall semicircular in shape of embedded breach,
This kind of structure, nut is set to be connected with bolt convenient.
In a kind of above-mentioned lifting pressre of sewing machine wire shearing driving device, guide rod, institute are also equipped with the installing frame
The inner for stating guide rod is fixedly connected with sliding block, and the outer end of the guide rod is used to be fixedly connected with loose ends device contiguous block.Guide rod rises
To the effect of guiding, guide rod makes slide bar and sliding block be slided by the direction of setting, will not blocked, and improves stability, reduces failure
Rate.
Compared with prior art, lifting pressre of sewing machine wire shearing driving device provided by the utility model has advantages below:
1st, this lifting pressre of sewing machine wire shearing driving device replaces driving lever and fork by connecting rod and roller or connecting rod and bearing
Bar has reeded part, ensures that roller or bearing can contact and promote sliding block, and roller now or bearing are rolling movements
, frictional force is low, and stability is good, and fault rate is low.
2nd, this lifting pressre of sewing machine wire shearing driving device makes sliding block and slide bar by setting buffer to play a part of buffering
Fierce shock will not occur with installing frame when mobile, by setting guide rod slide bar and sliding block is slided by the direction of setting,
Stability is improved, reduces fault rate.
Brief description of the drawings
Fig. 1 is the front view of this lifting pressre of sewing machine wire shearing driving device.
Fig. 2 is the partial structural diagram of this lifting pressre of sewing machine wire shearing driving device.
Fig. 3 is the explosive view of the connecting rod of this lifting pressre of sewing machine wire shearing driving device embodiment one and roller.
Fig. 4 is the explosive view of the connecting rod of this lifting pressre of sewing machine wire shearing driving device embodiment two and bearing.
In figure, 1, motor;2nd, installing frame;3rd, cam;4th, sliding block;5th, slide bar;6th, spring;7th, loose ends device contiguous block;8th, under
Trimming contiguous block;9th, connecting rod;10th, roller;11st, buffer;12nd, bolt;121st, head;122nd, bar portion;1221st, thread segment;
1222nd, roll segment;13rd, embedded breach;14th, guide rod;15th, nut;16th, presser foot lifter connecting rod;17th, bearing;18th, projection.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
Embodiment one
As shown in figure 1, this lifting pressre of sewing machine wire shearing driving device includes motor 1, installing frame 2, cam 3, sliding block 4, cunning
Bar 5 and spring 6.
Motor 1 is connected on installing frame 2, and slide bar 5 passes through installing frame 2, and one end of slide bar 5 is connected with loose ends device contiguous block 7,
The other end of slide bar 5 is connected with lower trimming contiguous block 8, and sliding block 4 is connected on slide bar 5, and spring 6 is enclosed on that slide bar 5 is outer and spring 6
One end is resisted against on installing frame 2, and the other end of spring 6 is resisted against on sliding block 4.
Connecting rod 9 and cam 3 are connected on the output shaft of motor 1, and as shown in Figure 2 and Figure 3, the outer end of connecting rod 9, which has, supplies spiral shell
The insertion breach 13 of the insertion of mother 15, the side wall semicircular in shape of embedded breach 13, the bar portion 122 of bolt 12 are included with externally threaded
The smooth roll segment 1222 of thread segment 1221 and surface, roll segment 1222 are enclosed on rolling close to the head 121 of bolt 12, roller 10
Outside section 1222, thread segment 1221 passes through the fixed hole position of the outer end of connecting rod 9 to make the He of bolt 12 by nut 15 in embedded breach 13
Connecting rod 9 is fixedly connected with, and roller 10 is enclosed on outside roll segment 1222 and has gap between roller 10 and roll segment 1222, and the one of roller 10
End and the gap of head 121 of bolt 12 coordinate, and the other end of roller 10 coordinates with the outer end gap of connecting rod 9.
Buffer 11 is fixed with installing frame 2, buffer 11 can be in contact with loose ends device contiguous block 7, be worn in installing frame 2
There is guide rod 14, the inner of guide rod 14 is fixedly connected with sliding block 4, and outer end and the loose ends device contiguous block 7 of guide rod 14 are fixedly connected with.
Sewing machine includes presser foot lifter connecting rod 16, and during work, motor 1 turns clockwise band moving cam 3, connecting rod 9 and roller
10 rotate, and cam 3 contacts presser foot lifter connecting rod 16 and simultaneously ejects presser foot lifter connecting rod 9, realize presser foot lifter, roller 10 not with sliding block 4
It is in contact, sliding block 4 and slide bar 5 will not move.The rotate counterclockwise of motor 1 band moving cam 3, connecting rod 9 and roller 10, cam 3 is not
It is in contact with presser foot lifter connecting rod 9, roller 10 is resisted against on sliding block 4 and overcomes the elastic force of spring 6 to move sliding block 4 and slide bar 5,
So that slide bar 5 drives loose ends device contiguous block 7 and lower trimming contiguous block 8 to move, the thread-loosening device that loose ends device contiguous block 7 connects is real
Existing loose ends, the cutting facility that lower trimming contiguous block 8 connects realize trimming, and now guide rod 14 moves with sliding block 4, guide rod
14 play a part of guiding, and after the completion of trimming, turn clockwise band moving cam 3, connecting rod 9 and the roller 10 of motor 1 rotates, sliding block 4,
Slide bar 5, guide rod 14, loose ends device contiguous block 7 and lower trimming contiguous block 8 reset in the presence of the elastic force of spring 6, during reset, pine
Line device contiguous block 7 is in contact with buffer 11, and buffer 11 plays a part of buffering, make sliding block 4, slide bar 5, guide rod 14,
The collision of fierceness will not occur for loose ends device contiguous block 7 and lower trimming contiguous block 8.In the present embodiment, buffer 11 is bounce cylinder,
In actual production, buffer 11 can be elastic caoutchouc.
Embodiment two
As shown in figure 4, the present embodiment is essentially identical with the structure and principle of embodiment one, different places are, this reality
Apply in example, the outer end of connecting rod 9 is fixed with bolt 12, and bearing 17 is axially positioned on one end of bolt 12, the madial wall of bearing 17
It is fixedly connected with bolt 12, the outer end of connecting rod 9 convexes to form projection 18 close to the side of bearing 17 towards bearing 17.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute
Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar
Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although motor 1, installing frame 2, cam 3, sliding block 4, slide bar 5, spring 6, the connection of loose ends device have more been used herein
Block 7, lower trimming contiguous block 8, connecting rod 9, roller 10, buffer 11, bolt 12, head 121, bar portion 122, thread segment 1221, rolling
The terms such as dynamic section 1222, embedded breach 13, guide rod 14, nut 15, presser foot lifter connecting rod 16, bearing 17, projection 18, but not
Exclude the possibility using other terms.It is of the present utility model just for the sake of more easily describing and explaining using these terms
Essence;Any additional limitation is construed as all to disagree with the utility model spirit.
Claims (6)
1. a kind of lifting pressre of sewing machine wire shearing driving device, including motor (1), installing frame (2), cam (3), sliding block (4), slide bar
(5) it is connected in spring (6), the motor (1) on installing frame (2), the slide bar (5) passes through installing frame (2), the slide bar
(5) one end is used to be connected with loose ends device contiguous block (7), and the other end of the slide bar (5) is used for and lower trimming contiguous block (8) phase
Even, the sliding block (4) is connected on slide bar (5), and the spring (6) is enclosed on slide bar (5) outside and one end of spring (6) is resisted against peace
Frame up on (2), the other end of the spring (6) is resisted against on sliding block (4), and the cam (3) is connected in the output shaft of motor (1)
On, it is characterised in that connecting rod (9) is also fixed with the output shaft of the motor (1), the outer end of the connecting rod (9) is provided with rolling
Take turns (10) or bearing (17), output shaft energy drivening rod (9) rotation of the motor (1), the roller (10) or bearing (17)
It can be in contact with sliding block (4) and overcome the elastic force of spring (6) to promote sliding block (4) and slide bar (5) mobile, on the installing frame (2)
Also it is fixed with the buffer (11) for buffer sliding block (4) and slide bar (5).
A kind of 2. lifting pressre of sewing machine wire shearing driving device according to claim 1, it is characterised in that the connecting rod (9)
Outer end be fixed with bolt (12), the bearing (17) is axially positioned on one end of bolt (12), the bearing (17) it is interior
Side wall is fixedly connected with bolt (12), and the outer end of the connecting rod (9) convexes to form convex close to the side of bearing (17) towards bearing (17)
Block (18).
A kind of 3. lifting pressre of sewing machine wire shearing driving device according to claim 1, it is characterised in that the connecting rod (9)
Outer end be fixed with bolt (12), the roller (10) is enclosed on bolt (12) outside and the bar of the roller (10) and bolt (12)
There is gap, one end of the roller (10) coordinates with head (121) gap of bolt (12), the roller between portion (122)
(10) the outer end gap of the other end and connecting rod (9) coordinates.
A kind of 4. lifting pressre of sewing machine wire shearing driving device according to claim 3, it is characterised in that the bolt (12)
Bar portion (122) include with the smooth roll segment (1222) of externally threaded thread segment (1221) and surface, the roller (10)
It is enclosed on roll segment (1222) outside.
A kind of 5. lifting pressre of sewing machine wire shearing driving device according to Claims 2 or 3 or 4, it is characterised in that the spiral shell
Bolt (12) is fixedly connected with by nut (15) and connecting rod (9), and the outer end of the connecting rod (9) has for the embedded insertion of nut (15)
Breach (13), the side wall semicircular in shape of the embedded breach (13).
A kind of 6. lifting pressre of sewing machine wire shearing driving device according to claim 1 or 2 or 3 or 4, it is characterised in that institute
State and guide rod (14) is also equipped with installing frame (2), the inner of the guide rod (14) is fixedly connected with sliding block (4), the guiding
The outer end of bar (14) is used to be fixedly connected with loose ends device contiguous block (7).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201720866469.2U CN207016988U (en) | 2017-07-17 | 2017-07-17 | A kind of lifting pressre of sewing machine wire shearing driving device |
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CN201720866469.2U CN207016988U (en) | 2017-07-17 | 2017-07-17 | A kind of lifting pressre of sewing machine wire shearing driving device |
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CN207016988U true CN207016988U (en) | 2018-02-16 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109837662A (en) * | 2019-04-07 | 2019-06-04 | 杰克缝纫机股份有限公司 | A kind of thread-trimming lifter-presser foot mechanism and sewing machine |
CN112391745A (en) * | 2019-08-17 | 2021-02-23 | 杰克缝纫机股份有限公司 | Presser foot lifting and trimming driving structure of sewing machine and control method thereof |
-
2017
- 2017-07-17 CN CN201720866469.2U patent/CN207016988U/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109837662A (en) * | 2019-04-07 | 2019-06-04 | 杰克缝纫机股份有限公司 | A kind of thread-trimming lifter-presser foot mechanism and sewing machine |
CN112391745A (en) * | 2019-08-17 | 2021-02-23 | 杰克缝纫机股份有限公司 | Presser foot lifting and trimming driving structure of sewing machine and control method thereof |
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