CN207749272U - A kind of sewing machine thread-trimming lifter-presser foot integrated device - Google Patents
A kind of sewing machine thread-trimming lifter-presser foot integrated device Download PDFInfo
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- CN207749272U CN207749272U CN201721299960.8U CN201721299960U CN207749272U CN 207749272 U CN207749272 U CN 207749272U CN 201721299960 U CN201721299960 U CN 201721299960U CN 207749272 U CN207749272 U CN 207749272U
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- presser foot
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- mandril
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Abstract
The utility model belongs to sewing machine technique field, refers in particular to a kind of sewing machine thread-trimming lifter-presser foot integrated device.While the purpose of this utility model is to provide a kind of reservation above-mentioned function, and there is the sewing machine thread-trimming lifter-presser foot integrated device that metalworking requirement is low, of simple structure and low cost, easy to assembly, service life is long.What the purpose of this utility model was realized in：A kind of sewing machine thread-trimming lifter-presser foot integrated device, include one be arranged sewing machine body lower end motor and can control sewing-machine foot component lifting presser foot lifter mandril；The lower end of the sewing machine body is installed with an oil box, and the bottom of oil box is reserved with mandril perforation；The lower end of the presser foot lifter mandril passes through the mandril to perforate and be hinged with a kinematic link, the other end of kinematic link and the motor linkage.
Description
Technical field
The utility model belongs to sewing machine technique field, refers in particular to a kind of sewing machine thread-trimming lifter-presser foot integrated device.
Background technology
Currently, with the more fierceness of sewing machine industry competition, some producers improve by seeking new technology point
Competitiveness, there are also producers, and by being compressed into original realization, relatively colleague is more competitive in price.But both the above side
Formula not be that the period is too long and unclear prospect really whether promote the basic method of quality.Applicant in order to solve the above problem, grinds
Send out device a kind of also successfully reducing production cost while realizing new technology point, and is applied for a patent, i.e., China is real
With new patent, application number：201520782770.6 the utility model belongs to sewing machine technique field, a kind of sewing is referred specifically to
The thread-trimming lifter-presser foot device of machine, including motor, rack, presser foot lifter cam, thread cutting mechanism, tangent line hand lever, presser foot lifter crank axle, lift
Presser feet drives crank, foot lifting mechanism and thread releasing mechanism；The thread cutting mechanism, foot lifting mechanism and thread releasing mechanism are driven by motor
It is dynamic；It is characterized in that：The motor is installed on the bottom plate of rack；The motor drives thread cutting mechanism by cam pack；Institute
It includes tangent line crank and cutter driving crank to state cam pack；The cutter driving crank is installed on one end axis of motor, is cut
Line crank is connect with tangent line hand lever, and tangent line crank is connected with cutter driving crank bias, and motor driving cutter driving crank turns
It is dynamic, trimming action is executed by tangent line crank handle turns thread cutting mechanism；The purpose of this utility model is to provide a kind of at low cost, account for
Small with space, trimming is convenient, installs the thread-trimming lifter-presser foot device of convenient sewing machine.
The utility model can realize the independent control of trimming and presser foot lifter by the positive and negative rotation of a motor.It changes
The pattern that traditional sewing machine is respectively adopted trimming electromagnet and presser foot lifter electromagnet to control, with a motor instead of two
Electromagnet, again can be to avoid the influence for the noise that electromagnet is brought while reducing cost.
Utility model content
While the purpose of this utility model is to provide a kind of reservation above-mentioned function, and have that metalworking requirement is low, structure is simple
The sewing machine thread-trimming lifter-presser foot integrated device of the advantages that single, of low cost, easy to assembly, service life is long.
What the purpose of this utility model was realized in：A kind of sewing machine thread-trimming lifter-presser foot integrated device includes one to set
Set sewing machine body lower end motor and can control sewing-machine foot component lifting presser foot lifter mandril；The sewing
The lower end of machine body is installed with an oil box, and the bottom of oil box is reserved with mandril perforation；It wears the lower end of the presser foot lifter mandril
Cross the mandril perforation and, the other end of kinematic link and the motor linkage hinged with a kinematic link.
Preferably, the drive shaft of external output torque is provided in the motor, the both ends difference of drive shaft is protruding,
The drive shaft left end stretches out the motor and forms trimming motor shaft, and trimming motor shaft is connected with cutting facility；The driving
Axis right end stretches out the motor and forms lift piezoelectricity arbor, and lift piezoelectricity arbor one end is arranged with a cam, is molded on cam face
There is lift to buckle face, face is buckled in lift and the other end of the kinematic link coordinates.
Preferably, the kinematic link is double rod holder, double rod holder both sides respectively integrally formed with cam drive bar and
Lift pressure drive link；The cam drive bar by a torque spring or resetting spring be allowed to be resisted against the lift buckle on face to
It realizes and moves back and forth；The lift pressure drive link is hinged with the presser foot lifter mandril to realize the presser foot lifter mandril in the axial direction
Movement.
Preferably, a pillar is formed on oil box, and a rack shaft and the torque spring wherein one are equipped in pillar
Torsion bar is resisted against the side of the pillar；The rack shaft is also cross the cam drive bar, lift pressure drive link and makes
The double rod holder is rotated around the rack shaft.
Preferably, the projection of the axial direction of the cam drive bar and the lift pressure drive link in the rack shaft is deposited
In angle.
Preferably, the cam drive bar is equipped with drive bolt close to described cam one end, and drive bolt is close to cam
Side is rotatably arranged with a driving column, and driving column is resisted against the lift and buckles on face.
Preferably, the peritreme of the mandril perforation extends inwardly to form oil scraper ring, and suit is fixed on the presser foot lifter mandril
There are a sealing shroud, the lower end of sealing shroud to cover the oil scraper ring.
Preferably, the pillar setting is between cam drive bar and lift pressure drive link；The cam drive bar and/or lift
It is provided with limit stop ring one on the outside of pressure drive link, the rack shaft is arranged in limit stop ring one.
Preferably, a hinge hole is formed on the lift pressure drive link and the presser foot lifter mandril, there is a link bolt
It is each passed through the hinge hole and is adapted to.
Preferably, the cam side forms a limit stop ring two, and limit stop ring two-way crosses fastener by the cam
It is installed on the lift piezoelectricity arbor.
The utility model is prominent and beneficial compared with prior art to be had the technical effect that：
1. the utility model uses new double rod holder, by the rotation of double rod holder, by turning in cam rotating bar
It is dynamic to be transmitted on lift pressure drive link, to influence the movement of presser foot lifter mandril in the axial direction in sewing machine, to realize
Control presser foot component lifting and falling.Meet centainly as long as such design processes a concentricity on sewing machine body
It is required that hole, processing request greatly reduces.
2. the oil box of the utility model design can replace sewing machine body.Rack shaft is passed through into oil box, is adopted
The shell on sewing machine body, advantage is replaced to be with oil box, once the processing of hole position can unsuccessfully be led on sewing machine shell
Scrapping for entire shell is caused, but oil box can also be convenient for changing as an Assembly part even without processing.Compared to
Production cost greatly reduces in scrapping for shell.
Description of the drawings
Fig. 1 is the structure diagram of the utility model；
Fig. 2 is the structure diagram after the hiding sewing machine bodies of Fig. 1；
Fig. 3 is partial enlarged view at A；
Fig. 4 is the structural schematic diagram after the hiding presser foot components of Fig. 2 and motor；
Fig. 5 is the structural schematic diagram of correlated parts between oil box and double rod holder；
Fig. 6 is the structural schematic diagram between oil box, sealing shroud, presser foot lifter mandril；
Fig. 7 is the sectional view in the directions B-B on Fig. 6.
In figure：1- sewing machine bodies；2- motors；3- cams；4- double rod holders；5- rack shafts；6- oil boxs；8- is hinged spiral shell
Bolt；9- motor mounting racks；11- presser foot lifter mandrils；12- presser foot components；21- trimming motor shafts；22- lifts piezoelectricity arbor；31- lift pressures
Curved surface；41- cam drive bars；42- lift pressure drive links；43- drive bolts；44- driving columns；51- torque springs；52- torsion bars；
61- pillars；62- mandrils are perforated；63- sealing shrouds；64- oil scraper rings；65- sealings；71- limit stop rings one；72- limit stop rings
Two；91- flangings.
Specific implementation mode
The utility model is described further with specific embodiment below.
Embodiment one：As shown in figs. 1-7, a kind of sewing machine thread-trimming lifter-presser foot integrated device includes a setting described
The motor 2 of 1 lower end of sewing machine body and the presser foot lifter mandril 11 that the lifting of sewing-machine foot component 12 can be controlled；The sewing machine
The lower end of body 1 is installed with an oil box 6, and the bottom of oil box 6 is reserved with mandril perforation 62；Under the presser foot lifter mandril 11
End is across mandril perforation 62 and hinged with a kinematic link, and the other end of kinematic link links with the motor 2.
The utility model provides for a presser foot lifter in this way by using a mandril perforation 62 has been reserved on oil box
The position that mandril 11 moves up and down.It can thus be avoided to avoid hole position is processed on casing because the mismachining tolerance of hole position is led
Scrapping for entire casing is caused, is processed on oil box, even processing failure so also only needs replacing oil box, to significantly
Reduce production cost.And often oil box is injection-molded item, precision is relatively guaranteed to meet product structure needs.
Preferably, the drive shaft of external output torque is provided in the motor 2, the both ends of drive shaft are respectively to overhanging
Go out, the drive shaft left end stretches out the motor 2 and forms trimming motor shaft 21, and trimming motor shaft 21 is connected with cutting facility；
The drive shaft right end stretches out the motor 2 and forms lift piezoelectricity arbor 22, and 22 one end of lift piezoelectricity arbor is arranged with a cam 3,
It forms lift on 3 surface of cam to buckle face 31, face 31 is buckled in lift and the other end of the kinematic link coordinates.
The technical program discloses a kind of one motor of use can control the one of sewing machine trimming and presser foot lifter simultaneously
Kind specific implementation mode.It can be coordinated by face 31 of buckling respectively with lift by the positive and negative rotation of motor, it is convex so as to ensure
It takes turns drive link 41 to move according to the track of setting, realizes that the presser foot lifter component 12 on sewing machine body 1 can be according to design whereby
Program work.
It should be noted that the rotation of motor 2 described in the utility model drives trimming motor shaft 21 to drive cutting facility work
Make, this clearly discloses in disclosed documents, does not repeat in the present invention.Simultaneously sewing machine this
In field, the axial movement of presser foot lifter mandril 11 how to drive presser foot component 12 to lift and land be also the prior art, at this
In do not repeat.
Preferably, the kinematic link is double rod holder 4, and 4 both sides of double rod holder are respectively integrally formed with cam drive bar
41 press drive link 42 with lift；The cam drive bar 41 is allowed to be resisted against the lift pressure by a torque spring or resetting spring 51
It is moved back and forth on curved surface 31 to realize；The lift pressure drive link 42 is hinged with the presser foot lifter mandril 11 to realize the lift
The movement of presser feet mandril 11 in the axial direction.
The utility model uses new double rod holder 4, will be in cam rotating bar 41 by the rotation of double rod holder 4
Rotation is transmitted on lift pressure drive link 42, to influence the movement of presser foot lifter mandril 11 in the axial direction in sewing machine, from
And realize lifting and falling for control presser foot component 12.Meet as long as such design processes a concentricity on oil box 6
Necessarily required hole, greatly reduces processing request.
Preferably, a pillar 61 is formed on oil box 6, and a rack shaft 5 and the torque spring are equipped in pillar 61
A 51 wherein torsion bars 52 are resisted against the side of the pillar 61；The rack shaft 5 is also cross the cam drive bar 41, lift
It presses drive link 42 and the double rod holder 4 is rotated around the rack shaft 5.
As long as rack shaft 5 is passed through oil box 6 by the oil box 6 of the utility model design, that is, is replaced using oil box 6
Shell on sewing machine body 1.And the design of pillar 61 needs the length of the hole position processed when can reduce metalworking, to
Difficulty of processing is reduced, passing rate of processing is improved.The torsion bar 52 of torque spring 51 should be answered in the position on pillar 61 simultaneously
This is with another torsion bar 52 in the stress side of the cam drive bar 41.I.e. two putting for torsion bar 52 are oppressed always with that can realize
The cam drive bar 41, which is resisted against lift and buckles, to be advisable on face 31.
And the connection relation between double rod holder 4 and oil box 6 is specifically illustrated in the technical program.Rack shaft 5
Design enables to double rod holder 4 by the way that the rotation of motor 2 can be evolved into driving institute around the rotation of the rack shaft 5
State the power moved on 11 axial direction of presser foot lifter mandril.Such design is concise, meets actual production demand.
As shown in Figure 4, it is preferable that the cam drive bar 41 and lift pressure drive link 42 preferably in rack shaft 5
There are certain angles for the projection of axial direction, and angle preferably is right angle.It is such to can be designed so that in cam drive
During being moved with cam 3, lift pressure drive link 42 can be moved up and down directly bar 41, that is to say, that such
The direction of power transmission is changed by the design of angle.It is more suitable for the real space situation of 1 lower end of sewing machine body, is reduced
To the occupancy in space.
Preferably, the cam drive bar 41 is equipped with drive bolt 43 close to 3 one end of the cam, and drive bolt 43 leans on
Nearly 3 side of cam is rotatably arranged with a driving column 44, and driving column 44 is resisted against the lift and buckles on face 31.Driving column 44 is set
Meter can when cam 3 rotate and then rotate together, but simultaneously as always against effect again can and then lift press
The design of curved surface 31 is moved according to the track of setting.The increase of driving column 44 can reduce between cam drive bar 41 and cam 3 because
Abrasion, can improve the service life of product caused by friction.
As shown in fig. 6-7, it is preferable that the peritreme of the mandril perforation 62 extends inwardly to form oil scraper ring 64, the lift pressure
Fixing sleeve is equipped with a sealing shroud 63 on foot mandril 11, and the lower end of sealing shroud 63 covers the oil scraper ring 64, the sealing shroud 63
Upper end be recessed inwardly to form sealing 65, the presser feet mandril 11 is arranged in sealing 65.
The design that oil scraper ring 64 and sealing shroud 63 coordinate can avoid the occurrence of oil leakage phenomenon to the greatest extent.It is actually using
In, sewing machine is often reversed certain angle and carries out equipment adjustment, and the lubricating oil in oil can all can be to positioned at low level at this time
A corner concentrate, greatly improved when fuel head can be compared with routine use at this time.Oil scraper ring 64 and sealing shroud 63 are matched at this time
Conjunction can leak out to avoid lubricating oil outside oil box 6.Sealing 65 on sealing shroud 63 is recessed inwardly setting, such design
The possibility that oil leak occurs can be reduced in actual use.Simultaneously in actual use, close due to the limitation of sewing machine structure
Big envelope 63 and presser feet mandril 11 understand offset a little preferably not with the concentric design of mandril perforation.It is such simultaneously inclined
Shifting can also be convenient for assembly.
Preferably simultaneously, the position of mandril described in the utility model perforation 62 is located at the middle part of oil box, thus can be with
In the case where ensureing reasonable for structure, the possibility that oil leak occurs is reduced.
Simultaneously sealing shroud 63 design can reduce mandril perforate 62 processing and generate oil leak the phenomenon that.Actually make
In, sealing shroud 63 is preferably made of rubber material, and such design can not only increase sealing performance, and can also subtract
The noise that few presser foot lifter mandril 11 generates on the move.
Preferably, the setting of the pillar 61 is between cam drive bar 41 and lift pressure drive link 42；The cam drive bar
41 and/or lift pressure drive link 42 outside be provided with limit stop ring 1, the rack shaft is arranged in limit stop ring 1
5.The design of limit stop ring 1 can ensure that in actual operation the position that rack shaft 5 is set at one always is turned
It is dynamic.The movement of position will not be caused because of frequent use.The setting of the pillar 61 is in cam drive bar 41 and lift pressure transmission
Space availability ratio can be improved between bar 42, reduce the occupancy to 1 lower end spatial position of sewing machine body.
Preferably, a hinge hole is formed on the lift pressure drive link 42 and the presser foot lifter mandril 11, there is one to be hinged
Bolt 8 is each passed through the hinge hole and is adapted to.The technical program specific description lift pressure drive link 42 and the presser foot lifter top
Between bar 11 how hinged scheme.Such mechanism can ensure lift pressure drive link 42 and the presser foot lifter mandril to the greatest extent
The degree of flexibility rotated between 11.
Preferably, 3 side of the cam forms a limit stop ring 2 72, and limit stop ring 2 72 will be described by fastener
Cam 3 is installed on the lift piezoelectricity arbor 22.The design of limit stop ring 2 72 can further decrease the difficulty of the manufacture of cam 3
Degree so that it is also simpler clear in the fastening of lift piezoelectricity arbor 22.It will not be processed because of the relationship for lifting face 31 of buckling
Some deeper hole positions, are fastenedly connected, this is the preferred design scheme of the utility model to realize.
Preferably, 2 both sides of the motor are respectively arranged with motor mounting rack 9, and flanging is formed on motor mounting rack 9
91, there are several fasteners to pass through the flanging 91 and fastens the motor 2 and sewing machine body 1.The design of flanging 91
Motor 2 can be fastened in the position of sewing machine body 1 by using a simple mode, and such mode is very simple, bright
Really.
Embodiment two：The present embodiment and embodiment one are almost the same, the difference lies in that preferably, the actuator is
One torque spring 51, is arranged with the torque spring 51 on the rack shaft 5, and there are two torsion bars for molding on torque spring 51
52, two torsion bars 52 are born against on the sewing machine body 1 and in cam rotating bar 41.The technical program is detailed
Illustrate the cam drive bar 41 is how to be resisted against always on the cam 3.It can also be other than torque spring 51
One compressed resetting spring is set between cam drive bar 41 and sewing machine body 1, and such can also realize is supported always
The purpose leaned on.But pass through a simple torque spring 51, so that it may by realize be preferably it is simple and quick it is effective in a manner of.
Operation principle:
The utility model drives the rotation of double rod holder 4 by rotation of the motor 2 with moving cam 3, to drive sewing machine
The movement of presser foot lifter mandril 11 in the axial direction on body 1.Simultaneously as double rod holder 4 is installed by an oil box 6,
Difficulty of processing can be reduced again, reduce processing cost.Guarantee to control trimming and presser foot lifter with a motor 2 to realize
Production cost can also be reduced outside two functions.
Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this
It encloses, therefore：The equivalence changes that all structures, shape, principle according to the utility model are done, should all be covered by the protection of the utility model
Within the scope of.
Claims (10)
1. a kind of sewing machine thread-trimming lifter-presser foot integrated device includes motor (2) of the setting in sewing machine body (1) lower end
With the presser foot lifter mandril (11) that can control sewing-machine foot component (12) lifting；It is characterized in that：The sewing machine body (1)
Lower end is installed with an oil box (6), and the bottom of oil box (6) is reserved with mandril perforation (62)；The presser foot lifter mandril (11)
Lower end passes through mandril perforation (62) and, the other end of kinematic link and the motor (2) connection hinged with a kinematic link
It is dynamic.
2. sewing machine thread-trimming lifter-presser foot integrated device according to claim 1, it is characterised in that：It is set in the motor (2)
It is equipped with the drive shaft of external output torque, the both ends difference of drive shaft is protruding, and the drive shaft left end stretches out the motor
(2) and trimming motor shaft (21) is formed, trimming motor shaft (21) is connected with cutting facility；The drive shaft right end stretches out the electricity
Machine (2) simultaneously forms lift piezoelectricity arbor (22), and lift piezoelectricity arbor (22) one end is arranged with a cam (3), is molded on cam (3) surface
There is lift to buckle face (31), face (31) is buckled in lift and the other end of the kinematic link coordinates.
3. sewing machine thread-trimming lifter-presser foot integrated device according to claim 2, it is characterised in that：The kinematic link is double
Bar holder (4), double rod holder (4) both sides are respectively integrally formed with cam drive bar (41) and lift pressure drive link (42)；It is described convex
Wheel drive link (41) is allowed to be resisted against the lift by a torque spring or resetting spring (51) and buckles on face (31) realizing
It moves back and forth；The lift pressure drive link (42) is hinged with the presser foot lifter mandril (11) to realize the presser foot lifter mandril (11)
Movement in the axial direction.
4. sewing machine thread-trimming lifter-presser foot integrated device according to claim 3, it is characterised in that：Oil box forms on (6)
One pillar (61), be equipped with a rack shaft (5) in pillar (61) and the torque spring (51) wherein torsion bar (52) against
Side in the pillar (61)；The rack shaft (5) is also cross the cam drive bar (41), lift pressure drive link
(42) and the double rod holder (4) is rotated around the rack shaft (5).
5. sewing machine thread-trimming lifter-presser foot integrated device according to claim 4, it is characterised in that：The cam drive bar
(41) and the projection of the axial direction of lift pressure drive link (42) in the rack shaft (5) there are angles.
6. sewing machine thread-trimming lifter-presser foot integrated device according to claim 5, it is characterised in that：The cam drive bar
(41) it is equipped with drive bolt (43) close to the cam (3) one end, drive bolt (43) is rotatably covered close to cam (3) side
Equipped with a driving column (44), driving column (44) is resisted against the lift and buckles on face (31).
7. sewing machine thread-trimming lifter-presser foot integrated device according to claim 6, it is characterised in that：The mandril perforates (62)
Peritreme extend inwardly to form oil scraper ring (64), fixing sleeve is equipped with a sealing shroud (63), sealing on the presser foot lifter mandril (11)
The lower end for covering (63) covers the oil scraper ring (64), and the upper end of the sealing shroud (63) is recessed inwardly to form sealing
(65), it is arranged with the presser feet mandril (11) in sealing (65).
8. the sewing machine thread-trimming lifter-presser foot integrated device according to claim 5 or 7, it is characterised in that：The pillar (61)
Setting is between cam drive bar (41) and lift pressure drive link (42)；The cam drive bar (41) and/or lift pressure drive link
(42) it is provided with limit stop ring one (71) on the outside of, the rack shaft (5) is arranged in limit stop ring one (71).
9. sewing machine thread-trimming lifter-presser foot integrated device according to claim 8, it is characterised in that：Drive link is pressed in the lift
(42) and on the presser foot lifter mandril (11) hinge hole is formed, there is a link bolt (8) to be each passed through the hinge hole
And it is adapted to.
10. sewing machine thread-trimming lifter-presser foot integrated device according to claim 9, it is characterised in that：Cam (3) side
A limit stop ring two (72) is formed, the cam (3) is installed in the lift piezoelectricity by limit stop ring two (72) by fastener
On arbor (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721299960.8U CN207749272U (en) | 2017-10-10 | 2017-10-10 | A kind of sewing machine thread-trimming lifter-presser foot integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721299960.8U CN207749272U (en) | 2017-10-10 | 2017-10-10 | A kind of sewing machine thread-trimming lifter-presser foot integrated device |
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| Publication Number | Publication Date |
|---|---|
| CN207749272U true CN207749272U (en) | 2018-08-21 |
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ID=63146846
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|---|---|---|---|
| CN201721299960.8U Active CN207749272U (en) | 2017-10-10 | 2017-10-10 | A kind of sewing machine thread-trimming lifter-presser foot integrated device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528184A (en) * | 2019-10-16 | 2019-12-03 | 浙江美机缝纫机有限公司 | The thread-trimming lifter-presser foot mechanism of sewing machine |
-
2017
- 2017-10-10 CN CN201721299960.8U patent/CN207749272U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528184A (en) * | 2019-10-16 | 2019-12-03 | 浙江美机缝纫机有限公司 | The thread-trimming lifter-presser foot mechanism of sewing machine |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191014 Address after: 318000 No. 58 Airport South Road, Taizhou, Zhejiang, Jiaojiang Patentee after: ZHEJIANG DUMA SEWING MACHINE CO., LTD. Address before: 318010 room 402, unit 1, 2 building, Cihui District, Jiaojiang, Taizhou, Zhejiang. Patentee before: Ruan Chen Hang |