CN107345342A - A kind of presser feet of sewing machine - Google Patents
A kind of presser feet of sewing machine Download PDFInfo
- Publication number
- CN107345342A CN107345342A CN201710537330.8A CN201710537330A CN107345342A CN 107345342 A CN107345342 A CN 107345342A CN 201710537330 A CN201710537330 A CN 201710537330A CN 107345342 A CN107345342 A CN 107345342A
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- Prior art keywords
- cloth
- presser feet
- pressure foot
- binder
- binder surface
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention provides a kind of presser feet of sewing machine, belong to technical field of sewing equipment.It solves existing presser feet and easily causes the technical problems such as cloth generation dislocation.The presser feet of this sewing machine includes pressure foot, and the bottom of pressure foot has binder surface, has the cloth contact structures for reducing coefficient of friction between binder surface and cloth to be sewed on the binder surface of pressure foot.Reduce the cloth contact structures of coefficient of friction between binder surface and cloth to be sewed in the present invention by being set on the binder surface of pressure foot, greatly improve the surface smoothness of pressure foot lower surface, reduce the coefficient of friction between binder surface and upper strata cloth, and then the frictional force between pressure foot and cloth is reduced, so that the work feed speed of two layers of cloth is consistent as far as possible up and down, effectively solve the problems, such as " producing dislocation during two pieces of cloth sewing ".
Description
Technical field
The invention belongs to technical field of sewing equipment, is related to a kind of sewing machine, particularly a kind of presser feet of sewing machine.
Background technology
Sewing machine is with one or more sewing thread, and one or more stitchings are formed on sewing, make one or more layers seam
The machinery equipment that material interweaves or united by a seam, it can sew the fabrics such as cotton, fiber crops, silk, hair, staple fibre and leather, plastics, paper
Wait product, the stitching neat appearance stitched out, it is smooth firmly, sewing velocity is fast, easy to use.Presser feet is important on sewing machine
Part, it ensures the smooth of sewing by applying pressure on sewing surface, so as to ensure the effect and efficiency of sewing.Sewing
When, upper strata cloth and lower layer mix feeding are placed between presser feet and tooth, and tooth drives and directly contacted with lower layer mix feeding, and tooth drives
When lower layer mix feeding and mobile cloth feeding in upper strata, because upper strata cloth is by the frictional force of presser feet so that the advance of lower layer mix feeding
Speed is more than the pace of upper strata cloth, final to cause during sewing, and inconsistent phenomenon occurs for upper strata cloth and lower layer mix feeding,
Sewing efficiency is have impact on, the generation of staggered floor can influence the attractive in appearance and technique of clothes.Allow the length of staggered floor in medium-to-high grade clothes
Spending range criterion is：Two blocks of clothes of 70cm length must be within 2cm in the upper strata cloth length having been had more after having sewed, but market
Upper most general sewing machine can not all meet the requirement of this standard.
China's patent (notification number：CN204875088U；The day for announcing：2015-12-16) disclose a kind of presser feet of sewing machine
Structure, including presser foot body, presser foot body are in tabular, and the front end of presser foot body is provided with the first attachment structure, the first connection
Structure connects presser feet roller free to rotate, and the rotating shaft of presser feet roller is perpendicular to the direction of motion of presser foot body, presser feet roller
Bottom flushed with the bottom of presser foot body.The presser feet pair of rollers leather free to rotate in front is contacted in advance, to skin
Leather carries out suppressing action, overcomes the elasticity recovery power of leather, so as to ensure that pressuring action of the presser foot body to leather, is not required to
Leather is pounded in advance it is flat, improve leather suture efficiency；Presser feet roller is free to rotate, and friction will not be produced between leather
Power.
Presser feet roller is simply set in above-mentioned patent document in the first attachment structure of presser foot body front end, rubbed to reduce
Power is wiped, this roller structure is not easy to be used in the bottom of presser foot body, and the frictional force of traditional presser foot body and cloth is larger,
Cause to be also easy to produce that displacement difference is larger during two layers of cloth sewing up and down, influence the effect of sewing.
The content of the invention
The present invention is directed to above mentioned problem existing for existing technology, there is provided a kind of presser feet of sewing machine, the present invention to be solved
Technical problem certainly is：How frictional force presser feet and cloth between is reduced to reduce the inconsistent phenomenon between sewing cloth.
The purpose of the present invention can be realized by following technical proposal：
A kind of presser feet of sewing machine, including pressure foot, the bottom of the pressure foot have binder surface, it is characterised in that institute
Stating has the cloth contact structures for reducing coefficient of friction between binder surface and cloth to be sewed on the binder surface of pressure foot.
Its principle is as follows：For sewing machine when sewing two blocks of clothes, upper strata cloth and lower layer mix feeding are in presser feet and feeding tooth
Between, the pressure foot of presser feet is directly born against on the cloth of upper strata；Teeth contact of the lower layer mix feeding directly with feeding tooth, sewing machine are sent
When expecting tooth feeding, give lower layer mix feeding one power F1 (direction advanced along cloth) inwards by tooth, F1 effect is
Lower layer mix feeding is allowed to feed forward, simultaneously because upper strata cloth and lower layer mix feeding contact, upper strata cloth can produce one to lower layer mix feeding
Individual outside frictional force f1, f1 effect can allow lower layer mix feeding outward movment, but because F1 ＞ f1, lower layer mix feeding can be forward
Motion, realizes the feed motion of lower layer mix feeding；Because the effect of power is mutual, lower layer mix feeding can give upper strata cloth to produce one
Frictional force f2 inwards, and f1=f2, f2 effect can allow upper strata cloth also to feed forward, at the same pressure foot and upper strata cloth it
Between produce outside frictional force F2, due to f2 ＞ F2, so upper strata cloth can travel forward with lower layer mix feeding.Traditional presser feet
In due to F1-f1 ＞ f2-F2, the power for causing lower layer mix feeding to advance is more much larger than the power that upper strata cloth advances, under so making
The pace of layer cloth is more than the pace of upper strata cloth, and final to cause during sewing, levels cloth misplaces
Phenomenon, it have impact on sewing efficiency.The technical program be provided with the binder surface of pressure foot reduce binder surface and cloth to be sewed it
Between coefficient of friction cloth contact structures, to reduce frictional force when being in contact between pressure foot binder surface and cloth；Due to upper
State F1 be motor driven feeding agomphiasis make caused by, the coefficient of friction between the power and cloth of motor be typically it is constant, because
This F1, f1 and f2 size are also changeless；Reduce the binder surface of pressure foot to frictional force F2 caused by the cloth of upper strata
Afterwards, the phenomenon of " producing dislocation during two pieces of cloth sutures " can effectively be reduced.
In the presser feet of above-mentioned sewing machine, the cloth contact structures are some recessed on the binder surface including being arranged on
Groove, the groove is hit by being ejected into the binder surface at a high speed by ceramic pellet or high speed steel ball to be formed.Lead in the technical program
Crossing ceramic pellet or high speed steel ball, binder surface formation groove is hit in injection at a high speed so that pressure foot lower surface finish is greatly carried
Rise, reduce the coefficient of friction between pressure foot binder surface and cloth；Reduce the binder surface of pressure foot to being rubbed caused by the cloth of upper strata
After wiping power F2, the phenomenon of " producing dislocation during two pieces of cloth sutures " can be effectively reduced.Simultaneously by setting above-mentioned groove structure
Also HV600-HV1000 can be reached by greatly strengthening pressure foot antiwear property and hardness, its hardness.
In the presser feet of above-mentioned sewing machine, the groove is ejected at a high speed by a diameter of 0.1mm~0.3mm ceramic pellet
Formed on the binder surface of pressure foot and the depth of the groove is 1.25 μm~4.5 μm.Part is sprayed by the use of ceramic pellet as particulate
The surface smoothness of piece surface can be not only improved, but also the surface with lubricant effect can be formed, is best suitable for sliding
The processing on surface.When ceramic pellet diameter is less than 0.1mm, processing technology has reached high machining accuracy, and cost is too high.Work as pottery
When porcelain ball diameter is more than 0.3mm, the groove size for hitting formation can be excessive, and tooth heads into cloth in groove structure, makes cloth
Corrugation, the frictional force of cloth and presser feet bottom surface can be increased on the contrary；Therefore by the diameter selection range of ceramic pellet be scheduled on 0.1mm~
Between 0.3mm；Similarly elect the depth of groove as 1.25 μm~4.5 μm.
In the presser feet of above-mentioned sewing machine, the depth of the groove is 2.0 μm, 3.0 μm or 3.5 μm.This data ruler
It is very little to reach preferable technique effect.
In the presser feet of above-mentioned sewing machine, the groove uniform intervals are distributed, and lug boss is formed between adjacent groove.
Lug boss plays binder effect to cloth.
In the presser feet of above-mentioned sewing machine, the pressure foot includes the guide part of arc and straight binder portion, described
Binder surface occupies the bottom surface in the whole binder portion；The round and smooth linking in bottom surface in binder surface and the binder portion, the groove spread all over
On the binder surface.Ensure as far as possible to reduce while binder is reliable pressure foot to frictional force caused by cloth feeding.
In the presser feet of above-mentioned sewing machine, alternatively, the cloth contact structures are on the binder surface
The ionosphere of setting, the ionosphere are formed by PVD technique.PVD technique is physical gas phase deposition technology Physical Vapor
Deposition, under vacuum, using low-voltage, the arc-discharge technique of high current, steam target using gas discharge
Send out and make all to produce ionization by evaporated material and gas, using the acceleration of electric field, make by evaporated material and its reaction product
Workpiece surface is deposited on, reaches and improves piece surface finish, reduces the purpose of coefficient of friction, is reduced by above-mentioned ionosphere and pressed
The coefficient of friction of sole binder surface, so as to reduce pressure foot to frictional force caused by the cloth of upper strata.
In the presser feet of above-mentioned sewing machine, as the third scheme, the cloth contact structures are on the binder surface
The one layer of Teflon aqueous dispersions coating set.Because Teflon (polytetrafluoroethylene (PTFE)) itself have high temperature resistant, it is corrosion-resistant, from moisten
The characteristics of cunning and very low coefficient of friction, it can make the binder surface coefficient of friction of pressure foot obtain effectively dropping bottom, so as to subtract
Small pressure foot is to frictional force caused by the cloth of upper strata.
Compared with prior art, the present invention has advantages below：
1st, it is by setting to reduce to rub between binder surface and cloth to be sewed on the binder surface of pressure foot in the present invention
Several cloth contact structures, the surface smoothness of pressure foot lower surface is greatly improved, reduces binder surface and upper strata cloth
Between coefficient of friction, and then frictional force between pressure foot and cloth is reduced so that the work feed speed of upper and lower two layers of cloth
Degree is consistent as far as possible, effectively solves the problems, such as " producing dislocation during two pieces of cloth sewing ".
2nd, greatly strengthened after binder surface formation groove is hit in injection at a high speed by ceramic pellet or high speed steel ball in the present invention
The wearability and durability of pressure foot, substantially increase the service life of presser feet.
Brief description of the drawings
Fig. 1 is the use state diagram of this presser feet.
Fig. 2 is the dimensional structure diagram one of pressure foot in this presser feet.
Fig. 3 is the dimensional structure diagram one of pressure foot in this presser feet in embodiment one.
Fig. 4 is the cross section structure diagram of pressure foot in this presser feet in embodiment one.
In figure, 1, pressure foot；11st, binder portion；11a, binder surface；11b, groove；11c, lug boss；12nd, guide part；2nd, send
Expect tooth；21st, tooth；3rd, upper strata cloth；4th, lower layer mix feeding.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment one
Presser feet includes the parts such as presser feet support, presser feet backplate, spring leaf, presser feet pawl, auxiliary presser foot, pressure foot 1, leaf spring,
Mainly pressure foot 1 is improved in the present embodiment, other parts are same as the prior art, and Integral connection structure is herein no longer
Repeat.As shown in Figures 2 to 4, the bottom of pressure foot 1 has a binder surface 11a in the present embodiment, on the binder surface 11a of pressure foot 1
With the cloth contact structures for reducing coefficient of friction between binder surface 11a and cloth to be sewed；Specifically, the pressure of pressure foot 1
There is some groove 11b, groove 11b to be hit by ceramic pellet or high speed steel ball by being ejected into binder surface 11a at a high speed on charge level 11a
Formed.
Its principle is：As shown in figure 1, sewing machine, when sewing two blocks of clothes, upper strata cloth 3 and lower layer mix feeding 4 are in pressure
Between pin and feeding tooth 2, the pressure foot 1 of presser feet is directly born against on upper strata cloth 3；Tooth of the lower layer mix feeding 4 directly with feeding tooth 2
21 contacts, during feeding 2 feeding of tooth of sewing machine, by tooth 21 to the power F1 inwards of lower layer mix feeding 4 one (i.e. along before cloth
The direction entered), F1 effect is to allow lower layer mix feeding 4 to feed forward, simultaneously because upper strata cloth 3 and lower layer mix feeding 4 contact, upper strata
The effect that cloth 3 can produce outside frictional force a f1, f1 to lower layer mix feeding 4 can allow the outward movment of lower layer mix feeding 4, but because
F1 ＞ f1, so lower layer mix feeding 4 can travel forward, realize the feed motion of lower layer mix feeding 4；Due to the effect of power be it is mutual,
Lower layer mix feeding 4 can give upper strata cloth 3 to produce a frictional force f2 inwards, and f1=f2, f2 effect can allow upper strata cloth 3
Feed forward, while outside frictional force F2 is produced between pressure foot 1 and upper strata cloth 3, due to f2 ＞ F2, so upper strata cloth
3 can travel forward with lower layer mix feeding 4.Due to F1-f1 ＞ f2-F2 in traditional presser feet, the power for causing lower layer mix feeding 4 to advance
It is more much larger than the power that upper strata cloth 3 advances, it the pace of lower layer mix feeding 4 is more than the pace of upper strata cloth 3,
Final to cause during sewing, inconsistent phenomenon occurs for levels cloth 4, have impact on sewing efficiency.Pass through pottery in the technical program
Binder surface 11a formation grooves 11b is hit in injection at a high speed for porcelain ball or high speed steel ball so that the lower surface finish of pressure foot 1 obtains pole
Big lifting, reduces the coefficient of friction between the binder surface 11a of pressure foot 1 and cloth；Because above-mentioned F1 is that motor driven feeding tooth 2 is dynamic
Caused by work, the coefficient of friction between the power and cloth of motor is typically constant, therefore F1, f1 and f2 size are also
It is changeless；After the binder surface 11a of reduction pressure foot 1 is to frictional force F2 caused by upper strata cloth 3, " two can be effectively reduced
The phenomenon of generation dislocation when block cloth sutures ".It is simultaneously anti-by setting above-mentioned groove 11b structures also greatly to strengthen pressure foot 1
Wear resistance and hardness, its hardness can reach HV600-HV1000.
Preferably, the present embodiment further groove 11b is ejected into presser feet at a high speed by a diameter of 0.1mm~0.3mm ceramic pellet
Formed on the binder surface 11a of plate 1 and groove 11b depth is 1.25 μm~4.5 μm.The present embodiment further groove 11b depth is excellent
Elect 2.0 μm, 3.0 μm or 3.5 μm as.Any surface finish of piece surface can be not only improved by the use of ceramic pellet as particulate injection part
Degree, but also the surface with lubricant effect can be formed, it is best suitable for the processing of slidingsurface.When ceramic pellet diameter is less than
During 0.1mm, processing technology has reached high machining accuracy, and cost is too high.When ceramic pellet diameter is more than 0.3mm, shape is hit
Into groove 11b sizes can be excessive, tooth 21 heads into cloth in groove 11b structures, cloth is wrinkled, and can increase cloth on the contrary
With the frictional force of presser feet bottom surface；Therefore the diameter selection range of ceramic pellet is scheduled between 0.1mm~0.3mm；Similarly by groove
11b depth elects 1.25 μm~4.5 μm as.
As shown in Figures 2 to 4, pressure foot 1 includes the guide part 12 of arc and straight binder portion 11, binder surface 11a are accounted for
According to the bottom surface in whole binder portion 11；The round and smooth linking in the bottom surface in binder surface 11a and binder portion 11, groove 11b spread over binder surface 11a
On；Groove 11b uniform intervals are distributed, and lug boss 11c is formed between adjacent groove 11b；Lug boss 11c plays binder to cloth
Effect.
Embodiment two
Ionosphere is provided with the present embodiment on binder surface 11a, ionosphere is formed by PVD technique.PVD technique is physics gas
Phase deposition technique Physical Vapor Deposition, under vacuum, using the arc discharge of low-voltage, high current
Technology, evaporate target using gas discharge and make all to produce ionization by evaporated material and gas, using the acceleration of electric field,
Make to be deposited on workpiece surface by evaporated material and its reaction product, reach and improve piece surface finish, reduce coefficient of friction
Purpose, reduce the binder surface 11a of pressure foot 1 coefficient of friction by above-mentioned ionosphere, so as to reduce pressure foot 1 to upper strata cloth 3
Caused frictional force.
Embodiment three
One layer of Teflon aqueous dispersions coating is provided with the present embodiment on binder surface 11a.Because Teflon (polytetrafluoroethyl-ne
Alkene) itself there is the characteristics of high temperature resistant, corrosion-resistant, self-lubricating and very low coefficient of friction, make the binder surface 11a of pressure foot 1
Coefficient of friction obtains effectively dropping bottom；So as to reduce pressure foot 1 to frictional force caused by upper strata cloth 3.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although 1, pressure foot has more been used herein；11st, binder portion；11a, binder surface；11b, groove；11c, projection
Portion；12nd, guide part；2nd, feeding tooth；21st, tooth；3rd, upper strata cloth；4th, the term such as lower layer mix feeding, but be not precluded from using other
The possibility of term.It is used for the purpose of more easily describing and explaining the essence of the present invention using these terms；They are explained
The limitation additional into any one is all disagreed with spirit of the present invention.
Claims (8)
1. a kind of presser feet of sewing machine, including pressure foot (1), the bottom of the pressure foot (1) has binder surface (11a), and it is special
Sign is have on the binder surface (11a) of the pressure foot (1) and reduce the system that rubbed between binder surface (11a) and cloth to be sewed
Several cloth contact structures.
2. the presser feet of sewing machine according to claim 1, it is characterised in that the cloth contact structures include being arranged on institute
Some grooves (11b) on binder surface (11a) are stated, the groove (11b) is by ceramic pellet or high speed steel ball by being ejected at a high speed
The binder surface (11a), which is hit, to be formed.
3. the presser feet of sewing machine according to claim 2, it is characterised in that the groove (11b) by a diameter of 0.1mm~
0.3mm ceramic pellet is ejected at a high speed the depth of formation and the groove (11b) on the binder surface (11a) of pressure foot (1)
1.25 μm~4.5 μm.
4. the presser feet of sewing machine according to claim 3, it is characterised in that the depth of the groove (11b) be 2.0 μm,
3.0 μm or 3.5 μm.
5. the presser feet of the sewing machine according to Claims 2 or 3 or 4, it is characterised in that groove (11b) uniform intervals
It is distributed, lug boss (11c) is formed between adjacent groove (11b).
6. the presser feet of the sewing machine according to Claims 2 or 3 or 4, it is characterised in that the pressure foot (1) includes arc
Guide part (12) and straight binder portion (11), the binder surface (11a) occupy the bottom surface of the whole binder portion (11)；Institute
The round and smooth linking in bottom surface of binder surface (11a) and binder portion (11) is stated, the groove (11b) is spread on the binder surface (11a).
7. the presser feet of sewing machine according to claim 1, it is characterised in that the cloth contact structures are binder surface
The ionosphere set on (11a), the ionosphere are formed by PVD technique.
8. the presser feet of sewing machine according to claim 1, it is characterised in that the cloth contact structures are binder surface
The one layer of Teflon aqueous dispersions coating set on (11a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537330.8A CN107345342A (en) | 2017-07-04 | 2017-07-04 | A kind of presser feet of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710537330.8A CN107345342A (en) | 2017-07-04 | 2017-07-04 | A kind of presser feet of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107345342A true CN107345342A (en) | 2017-11-14 |
Family
ID=60257767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710537330.8A Pending CN107345342A (en) | 2017-07-04 | 2017-07-04 | A kind of presser feet of sewing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN107345342A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055350A (en) * | 2022-07-05 | 2022-09-16 | 西安磁林电气有限公司 | Presser foot surface treatment method for bag sewing machine or sewing machine |
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| US2991739A (en) * | 1957-12-02 | 1961-07-11 | Joa Curt George | "teflon" faced shoe for the pressure foot of a sewing machine or the like |
| CH544176A (en) * | 1972-04-13 | 1973-11-15 | Mefina Sa | Presser foot - entirely coated with fluorocarbon resin |
| JPH0716372A (en) * | 1993-06-30 | 1995-01-20 | Brother Ind Ltd | Presser foot of sewing machine |
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|---|---|---|---|---|
| US2991739A (en) * | 1957-12-02 | 1961-07-11 | Joa Curt George | "teflon" faced shoe for the pressure foot of a sewing machine or the like |
| CH544176A (en) * | 1972-04-13 | 1973-11-15 | Mefina Sa | Presser foot - entirely coated with fluorocarbon resin |
| JPH0716372A (en) * | 1993-06-30 | 1995-01-20 | Brother Ind Ltd | Presser foot of sewing machine |
| JPH07275543A (en) * | 1994-04-15 | 1995-10-24 | Brother Ind Ltd | Cloth presser for sewing machine and manufacture thereof |
| CN1247907A (en) * | 1998-09-11 | 2000-03-22 | 大和缝纫机制造株式会社 | Method for manufacture of sewing machine and its parts |
| CN1282639A (en) * | 1999-08-03 | 2001-02-07 | 风琴针株式会社 | Needls and manufacturing method thereof |
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| CN201634862U (en) * | 2010-04-28 | 2010-11-17 | 王加强 | Teflon piping cord presser foot |
| CN207331219U (en) * | 2017-07-02 | 2018-05-08 | 王建波 | A kind of presser foot |
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| 田欣利等: "《工程陶瓷高效低成本加工新技术与强度控制》", 31 October 2015, 国防工业出版社 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115055350A (en) * | 2022-07-05 | 2022-09-16 | 西安磁林电气有限公司 | Presser foot surface treatment method for bag sewing machine or sewing machine |
| CN115055350B (en) * | 2022-07-05 | 2023-10-31 | 西安磁林电气有限公司 | Presser foot surface treatment method for bag sewing machine or sewing machine |
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Application publication date: 20171114 |
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