CN105780315B - The sewing machine of buffer unit is fallen with presser feet - Google Patents
The sewing machine of buffer unit is fallen with presser feet Download PDFInfo
- Publication number
- CN105780315B CN105780315B CN201610320191.9A CN201610320191A CN105780315B CN 105780315 B CN105780315 B CN 105780315B CN 201610320191 A CN201610320191 A CN 201610320191A CN 105780315 B CN105780315 B CN 105780315B
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- Prior art keywords
- cylinder
- presser feet
- piston
- sewing machine
- fallen
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/12—Presser-foot attachment
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2207/00—Use of special elements
- D05D2207/02—Pneumatic or hydraulic devices
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a kind of sewing machine that buffer unit is fallen with presser feet, including head, mechanism for lifting pressre of sewing machine is provided with head；Mechanism for lifting pressre of sewing machine is provided with presser feet and falls buffer unit；Presser feet, which falls buffer unit, includes piston, cylinder, and piston is movably set in cylinder, coordinates between piston and cylinder for gap；Piston can move up and down relative to cylinder, so that forming malleation or negative pressure in the cavity of cylinder；Piston and cylinder directly or indirectly have on the component of relative displacement installed in two of sewing machine respectively；Check valve is provided with piston or cylinder, check valve can make to form malleation damping or negative pressure damping in cylinder.The present invention can produce malleation damping or negative pressure damping when presser feet is fallen, and offset the impulsive force that part presser feet is fallen, slow down presser feet speed of fall, mitigate the noise that presser feet directly or indirectly hits needle plate.
Description
Technical field
The present invention relates to a kind of sewing machine, and in particular to a kind of sewing machine that buffer unit is fallen with presser feet.
Background technology
Sewing is placed under presser feet, it is necessary to which presser feet is lifted during stitching sewing machine clothes, pushed away by compression spring
Presser feet and fall compression sewing.In order to laborsaving, sewing machine often uses solenoid actuated foot lifting mechanism.
As shown in figure 1, mechanism for lifting pressre of sewing machine includes electromagnet 1, the movable end connection push rod 2 of electromagnet 1, push rod 2
Top connect connecting rod 4-1 one end by the 3rd axial screw 9, the first of connecting rod 4-1 other end connection rear crank component 4
Movable end, the fixing end of rear crank component 4 connect head 107, the second activity of rear crank component 4 by the first axial screw 5
One end that end passes through the cylinder lever connecting rod 6 of the second axial screw 7；First movable end of crank 19 before the other end connection of pull bar 6；Preceding song
The fixing end connection head 107 of handle 19, one end of the second movable end connection boatswain chair 18 of preceding crank 19, the other end of boatswain chair 18 lead to
Cross joint 17 and connect depression bar 16；The upper end of depression bar 16 connects pressure regulating screw 21 by spring 20, and the lower end of depression bar 16 is provided with pressure
Pin 15.
The operation principle of mechanism for lifting pressre of sewing machine is as follows：
During presser foot lifter, electromagnet 1 produces magnetic force moving push rod 2 and moved upwards, and push rod 2 promotes rear crank by connecting rod 4-1
Component 4 is swung around the first axial screw 5, and crank 19 is swung before rear crank component 4 is driven by pull bar 6, and preceding crank 19 is by hanging
Plate 18 carries joint 17 upwards, and joint 17 drives depression bar 16 to overcome the elastic force of spring 20 to move upwards, so that being lifted on presser feet 15；When
The magnetic force of electromagnet 1 is disappeared, and presser feet 15 can be fallen by the thrust of spring 20.
Although presser feet 15 lift higher sewing of putting just facilitates, it is also heavier directly or indirectly to hit needle plate when falling,
Noise is larger.
The content of the invention
The technical problems to be solved by the invention be to provide it is a kind of fall the sewing machine of buffer unit with presser feet, it can be with
Malleation damping or negative pressure damping are produced when presser feet is fallen, slows down presser feet speed of fall, mitigates the sound for hitting needle plate.
In order to solve the above technical problems, the present invention falls the technical solution of the sewing machine of buffer unit with presser feet
For：
Including head 107, mechanism for lifting pressre of sewing machine is provided with head 107；Mechanism for lifting pressre of sewing machine is provided with pressure
Pin falls buffer unit；Presser feet, which falls buffer unit, includes piston 8, cylinder 12, and piston 8 is movably set in cylinder 12, piston 8
Coordinate between cylinder 12 for gap；Piston 8 can move up and down relative to cylinder 12, so that shape in the cavity K of cylinder 12
Into malleation or negative pressure；Piston 8 and cylinder 12 are directly or indirectly arranged on two structures for having relative displacement of sewing machine respectively
On part；Check valve is provided with piston 8 or cylinder 12, check valve can make to form malleation damping or negative pressure resistance in cylinder 12
Buddhist nun；If being damped using malleation, check valve is opened when presser feet lifts, and air can quickly enter cylinder 12；It is unidirectional when presser feet is fallen
Valve closes, and air slowly discharges cylinder 12 by the gap between piston 8 and cylinder 12, and air forms positive pressure drag in cylinder 12
Buddhist nun, so as to weaken the impulsive force that presser feet is fallen；If using negative pressure damping, check valve is opened when presser feet lifts, and air can be rapid
Discharge cylinder 12；Check valve closes when presser feet is fallen, and air enters cylinder 12 by the gap between piston 8 and cylinder 12, empty
Gas forms negative pressure damping in cylinder 12, so as to weaken the impulsive force that presser feet is fallen.
The mechanism for lifting pressre of sewing machine includes electromagnet 1, the movable end connection push rod 2 of electromagnet 1, the top of push rod 2
Connecting rod 4-1 one end, the first activity of connecting rod 4-1 other end connection rear crank component 4 are connected by the 3rd axial screw 9
End, the fixing end of rear crank component 4 connect head 107 by the first axial screw 5, and the second movable end of rear crank component 4 leads to
Cross the rear end of the cylinder lever connecting rod 6 of the second axial screw 7；First movable end of crank 19 before the front end connection of pull bar 6；Preceding crank 19
Fixing end connects head 107, one end of the second movable end connection boatswain chair 18 of preceding crank 19, and the other end of boatswain chair 18 passes through joint
17 connection depression bars 16；The upper end of depression bar 16 connects pressure regulating screw 21 by spring 20；The lower end stretching head 107 of depression bar 16 is simultaneously solid
Surely it is provided with presser feet 15；The middle part of the connecting rod 4-1 connects the piston 8 by the 4th axial screw 10；The cylinder 12
Bottom is provided with check valve；Check valve is opened when presser feet 15 lifts, and air can quickly enter cylinder 12；It is single when presser feet 15 is fallen
Closed to valve, air discharges cylinder 12 by the gap between piston 8 and cylinder 12, and air is formed in the cavity K of cylinder 12
The thrust of spring 20 is cut down in malleation damping, slows down the speed of fall of presser feet 15.
The check valve includes stomata pad 14 and elastic plug 13；Stomata pad 14 is arranged at the bottom of cylinder 12, stomata pad
14 offer air admission hole I；Elastic plug 13 is provided with passage H；If being damped using malleation, elastic plug 13 is located at stomata pad 14
Inner side；If using negative pressure damping, elastic plug 13 is located at the outside of stomata pad 14.
Screw G is offered in the middle part of the connecting rod 4-1, the 4th axial screw 10, the 4th axial screw are equipped with screw G
10 lock jail on connecting rod 4-1 by nut 3.
The socket cap of 4th axial screw 10, which is movably set in, to be opened in the groove E of the sidepiece of piston 8；The side of piston 8
Face F can prevent piston 8 from rotating.
The cylinder 12 is fixedly installed on electromagnet 1 by screw 11.
What the present invention can reach has the technical effect that：
The present invention can produce malleation damping when presser feet is fallen, and offset the impulsive force that part presser feet is fallen, fall presser feet
Lower speed slows down, and mitigates the noise that presser feet directly or indirectly hits needle plate.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description：
Fig. 1 is the schematic diagram of prior art mechanism for lifting pressre of sewing machine；
Fig. 2 be the present invention have presser feet fall buffer unit sewing machine schematic diagram, the presser feet in figure is in whereabouts shape
State；
Fig. 3 is that the presser feet of the present invention is in the schematic diagram of lifting status；
Fig. 4 is the decomposing schematic representation of the present invention；
Fig. 5 is the partial schematic diagram of the present invention, and now presser feet is in and lifts process；
Fig. 6 is the partial schematic diagram of the present invention, and now presser feet is in dropping process；
Fig. 7 is Fig. 5 side view.
Description of reference numerals in figure：
1 is electromagnet, and 2 be push rod,
3 be nut, and 4 be rear crank component,
4-1 is connecting rod,
5 be the first axial screw, and 6 be pull bar,
7 be the second axial screw, and 8 be piston,
9 be the 3rd axial screw, and 10 be the 4th axial screw,
11 be screw, and 12 be cylinder,
13 be elastic plug, and 14 be stomata pad,
15 be presser feet, and 16 be depression bar,
17 be joint, and 18 be boatswain chair,
19 be preceding crank, and 20 be spring,
21 be pressure regulating screw, and 107 be head.
Embodiment
As shown in Figures 2 to 7, the present invention has the sewing machine that presser feet falls buffer unit, including head 107, head 107
On be provided with mechanism for lifting pressre of sewing machine, head 107 and mechanism for lifting pressre of sewing machine are that sewing-machine foot falls buffer unit
Carrier；
Mechanism for lifting pressre of sewing machine includes electromagnet 1, and the movable end connection push rod 2 of electromagnet 1, the top of push rod 2 passes through
3rd axial screw 9 connection connecting rod 4-1 one end, the first movable end of connecting rod 4-1 other end connection rear crank component 4, after
The fixing end of crank assemblies 4 connects head 107 by the first axial screw 5, and the second movable end of rear crank component 4 passes through second
The rear end of the cylinder lever connecting rod 6 of axial screw 7；First movable end of crank 19 before the front end connection of pull bar 6；The fixing end of preceding crank 19
Head 107, one end of the second movable end connection boatswain chair 18 of preceding crank 19 are connected, the other end of boatswain chair 18 is connected by joint 17
Depression bar 16；The upper end of depression bar 16 connects pressure regulating screw 21 by spring 20, and pressure regulating screw 21 is arranged at the pressure regulating screw of head 107
It is interior；The lower end of depression bar 16 stretches out head 107 and is fixedly installed presser feet 15；
The top of push rod 2 offers the groove D extended longitudinally, and groove D is stretched into connecting rod 4-1 one end；Open at the connecting rod 4-1 end
Provided with hole C, through being screwed on push rod 2 after push rod 2 and hole C, hole C lives with the 3rd axial screw 9 for the end of thread of the 3rd axial screw 9
Dynamic connection；
The fixing end of rear crank component 4 offers hole A, and the first axial screw 5 is arranged in the A of hole, rear crank component 4 is lived
It is dynamic to be connected on head 107；
Second movable end of rear crank component 4 offers screw B, and the second axial screw 7 is arranged in screw B, passes through
Two axial screws 7 realize being flexibly connected between the second movable end of rear crank component 4 and the rear end of pull bar 6；
Screw G is offered in the middle part of connecting rod 4-1, the 4th axial screw 10 is equipped with screw G, the 4th axial screw 10 is logical
Cross nut 3 and lock jail on connecting rod 4-1；
4th axial screw 10 connects piston 8；The socket cap of 4th axial screw 10, which is movably set in, is opened in the side of piston 8
In the groove E in portion；The side F of piston 8 can prevent piston 8 from rotating；
Piston 8 is movably set in cylinder 12, is coordinated between piston 8 and cylinder 12 for gap；Piston 8 can be relative to gas
Cylinder 12 moves up and down, so that forming malleation or negative pressure in the cavity K of cylinder 12；
Cylinder 12 is fixedly installed on electromagnet 1 by screw 11；
The bottom of cylinder 12 is provided with check valve；Check valve includes stomata pad 14 and elastic plug 13；Stomata pad 14 is set
In the bottom of cylinder 12, stomata pad 14 offers air admission hole I；Passage H is offered in cylinder 12, bullet is movably set with passage H
Property plug 13, elastic plug 13 are located at air admission hole I top.
Check valve is opened when presser feet 15 lifts, and air can quickly enter cylinder 12；Check valve closes when presser feet 15 is fallen,
Air discharges cylinder 12 upwards by the gap between piston 8 and cylinder 12, and air forms positive pressure drag in the cavity K of cylinder 12
Buddhist nun cuts down the thrust of spring 20, slows down the speed of fall of presser feet 15, mitigates the noise that presser feet 15 hits needle plate J, so as to weaken pressure
The impulsive force that pin 15 is fallen.
The operation principle of the present invention is as follows：
As shown in figure 3, during presser foot lifter, electromagnet 1 produces magnetic force moving push rod 2 and moved upwards, and push rod 2 passes through connecting rod 4-1
Rear crank component 4 is promoted to be swung around the first axial screw 5, crank 19 is swung before rear crank component 4 is driven by pull bar 6, preceding song
Handle 19 carries joint 17 upwards by boatswain chair 18, and joint 17 drives depression bar 16 to overcome the elastic force of spring 20 to move upwards, so that pressure
Lifted on pin 15, leave needle plate J；
As shown in Figure 5, Figure 7, at the same time, connecting rod 4-1 promotes piston 8 to rise by the 4th axial screw 10, and piston 8 exists
Negative pressure is produced in uphill process in the cavity K of cylinder 12, air opens elastic plug 13 by the air admission hole I tops of stomata pad 14,
Enter cavity K from passage H；
When the power-off of electromagnet 1 loses magnetic force, presser feet 15 is declined by the thrust of spring 20, and foot lifting mechanism is made to return to fortune
It is dynamic, presser feet 15 is fallen, as shown in Figure 2；
As shown in fig. 6, at the same time, connecting rod 4-1 promotes piston 8 to move downward by the 4th axial screw 10, in cavity K
Air push elasticity plug 13, block the air admission hole I of passage H and stomata pad 14, air can only be between piston 8 and cylinder 12
Fit clearance is slowly discharged upwards, is made to produce malleation in the cavity K of cylinder 12, is slowed down the decrease speed of piston 8, so as to slow down
The decrease speed of presser feet 15, alleviates shock of the presser feet 15 to needle plate J, the cavity K of cylinder 12 malleation can also disappear immediately.
Claims (4)
- A kind of 1. sewing machine that buffer unit is fallen with presser feet, it is characterised in that：Including head（107）, head（107）On set It is equipped with mechanism for lifting pressre of sewing machine；Mechanism for lifting pressre of sewing machine is provided with presser feet and falls buffer unit；Presser feet falls buffer unit Including piston（8）, cylinder（12）, piston（8）It is movably set in cylinder（12）It is interior, piston（8）With cylinder（12）Between be gap Coordinate；Piston（8）Can be relative to cylinder（12）Move up and down, so that cylinder（12）Cavity（K）It is interior formation malleation or Negative pressure；Piston（8）And cylinder（12）Directly or indirectly have respectively installed in two of sewing machine on the component of relative displacement；It is living Plug（8）Or cylinder（12）On be provided with check valve, check valve can make cylinder（12）Middle formation malleation damping or negative pressure damping；If being damped using malleation, check valve is opened when presser feet lifts, and air can quickly enter cylinder（12）；It is single when presser feet is fallen Closed to valve, air passes through piston（8）With cylinder（12）Between gap discharge cylinder（12）, air is in cylinder（12）Middle formation Malleation damps；If using negative pressure damping, check valve is opened when presser feet lifts, and air can discharge cylinder rapidly（12）；Presser feet falls Check valve will close when lower, and air passes through piston（8）With cylinder（12）Between gap enter cylinder（12）, air is in cylinder（12） Middle formation negative pressure damping, so as to weaken the impulsive force that presser feet is fallen；The mechanism for lifting pressre of sewing machine includes electromagnet（1）, electromagnet（1）Movable end connection push rod（2）, push rod（2）'s Top passes through the 3rd axial screw（9）Connect connecting rod（4-1）One end, connecting rod（4-1）The other end connection rear crank component（4） The first movable end, rear crank component（4）Fixing end pass through the first axial screw（5）Connect head（107）, rear crank component （4）The second movable end pass through the second axial screw（7）Cylinder lever connecting rod（6）Rear end；The connecting rod（4-1）Middle part pass through the 4th axial screw（10）Connect the piston（8）；The cylinder（12）Bottom End is provided with check valve；Presser feet（15）Check valve is opened when lifting, and air can quickly enter cylinder（12）；Presser feet（15）Fall When check valve close, air passes through piston（8）With cylinder（12）Between gap discharge cylinder（12）, air is in cylinder（12）'s Cavity（K）Spring is cut down in interior formation malleation damping（20）Thrust, make presser feet（15）Speed of fall slows down.
- 2. the sewing machine according to claim 1 that buffer unit is fallen with presser feet, it is characterised in that：The check valve bag Include stomata pad（14）With elastic plug（13）；Stomata pad（14）It is arranged at cylinder（12）Bottom, stomata pad（14）Offer into Stomata（I）；Elastic plug（13）It is provided with passage（H）；If being damped using malleation, elastic plug（13）Positioned at stomata pad（14）'s Inner side；If using negative pressure damping, elastic plug（13）Positioned at stomata pad（14）Outside.
- 3. the sewing machine according to claim 1 that buffer unit is fallen with presser feet, it is characterised in that：The connecting rod（4- 1）Middle part offer screw（G）, screw（G）Inside it is equipped with the 4th axial screw（10）, the 4th axial screw（10）Pass through spiral shell It is female（3）Lock jail is in connecting rod（4-1）On.
- 4. the sewing machine according to claim 1 that buffer unit is fallen with presser feet, it is characterised in that：4th axle position Screw（10）Socket cap be movably set in and be opened in piston（8）The groove of sidepiece（E）It is interior；Piston（8）Side（F）It can prevent Piston（8）Rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610320191.9A CN105780315B (en) | 2016-05-16 | 2016-05-16 | The sewing machine of buffer unit is fallen with presser feet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610320191.9A CN105780315B (en) | 2016-05-16 | 2016-05-16 | The sewing machine of buffer unit is fallen with presser feet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105780315A CN105780315A (en) | 2016-07-20 |
| CN105780315B true CN105780315B (en) | 2018-03-30 |
Family
ID=56378932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610320191.9A Active CN105780315B (en) | 2016-05-16 | 2016-05-16 | The sewing machine of buffer unit is fallen with presser feet |
Country Status (1)
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| CN (1) | CN105780315B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1115933B1 (en) * | 1998-09-26 | 2003-12-17 | Quick Rotan Elektromotoren GmbH | Actuating device |
| JP2008080110A (en) * | 2006-08-28 | 2008-04-10 | Brother Ind Ltd | Sewing machine |
| CN101372794B (en) * | 2008-10-16 | 2011-12-07 | 上海贵衣缝纫设备有限公司 | Adjustment mechanism for presser foot for connection in pattern machine |
| CN201347493Y (en) * | 2009-01-07 | 2009-11-18 | 浙江中森缝纫机有限公司 | Foot lifter of blind stitching machine |
| CN201411546Y (en) * | 2009-02-26 | 2010-02-24 | 刘力玮 | Pressure buffering and switching structure for presser bar of sewing machine |
| CN103614867B (en) * | 2013-12-02 | 2015-06-24 | 耿安富 | Sewing machine pressing mechanism and sewing machine with sewing machine pressing mechanism |
| CN104746245A (en) * | 2013-12-29 | 2015-07-01 | 天津渤之新科技发展有限公司 | Fabric pressing device of industrial sewing machine |
| CN204138894U (en) * | 2014-08-15 | 2015-02-04 | 新通宇缝纫机股份有限公司 | A kind of sewing device of built-in presser foot lifter electromagnet |
| CN205775174U (en) * | 2016-05-16 | 2016-12-07 | 浙江美机缝纫机有限公司 | There is presser feet and fall the sewing machine of buffer unit |
-
2016
- 2016-05-16 CN CN201610320191.9A patent/CN105780315B/en active Active
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| Publication number | Publication date |
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| CN105780315A (en) | 2016-07-20 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 193, Xinxin Middle Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Meiji Technology Group Co.,Ltd. Address before: No. 193, Xinxin Middle Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG MAQI SEWING MACHINE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Sewing machine with foot drop buffer device Effective date of registration: 20230902 Granted publication date: 20180330 Pledgee: Wenling sub branch of Postal Savings Bank of China Ltd. Pledgor: Meiji Technology Group Co.,Ltd. Registration number: Y2023980054984 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |