CN104963125B - A kind of anti-loosening needle bar of sewing machine fixed structure - Google Patents
A kind of anti-loosening needle bar of sewing machine fixed structure Download PDFInfo
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- CN104963125B CN104963125B CN201510381472.0A CN201510381472A CN104963125B CN 104963125 B CN104963125 B CN 104963125B CN 201510381472 A CN201510381472 A CN 201510381472A CN 104963125 B CN104963125 B CN 104963125B
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- shank
- piston
- sealing shroud
- eedle
- sewing machine
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- 238000009958 sewing Methods 0.000 title claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Sewing Machines And Sewing (AREA)
- Sealing Devices (AREA)
Abstract
A kind of anti-loosening needle bar of sewing machine fixed structure, is related to sewing machine field.The present invention solves the problem of eedle loosens.The anti-loosening needle bar of sewing machine fixed structure, it includes shank, sealing shroud, piston rod and piston；The shank indoor design is cylindricality counter bore structure, and the shank is slidedly assemblied on the power transmission shaft of sewing machine；The sealing shroud is designed as cylinder, and the indoor design of the sealing shroud is cone shaped countersink structure, and the sealing shroud is fixedly mounted in the cylindricality counterbore of the shank；The piston is slidedly assemblied in the cylindricality counterbore of the shank；The piston rod is fixedly connected with the piston；Using syringe principle, by changing the size and location of air pressure, the stationary state of eedle is controlled, causes that the fixation of eedle is more firm by the track of anti-reverse slip, is not influenceed by extraneous factor, using simple structure, reach and loosen dynamic purpose.
Description
Technical field
The present invention relates to sewing machine field, more particularly to a kind of needle bar of sewing machine fixed structure.
Background technology
Eedle is also known as suture needle, car pin, is the important composition annex of sewing machine, eedle is during sewing, in face of fabric
Thousands of piercings per minute, and contacted after fabric transfixation with needle plate, rotating shuttle and looper, various burdens are subject, especially
It is when being used in thick or hard fabric.
Traditional method is to press from both sides screw to fix needle by pin, when sewing machine works, due to needle not
The up and down motion stopped so that pin folder screw can loosen because of the vibrations that eedle is moved, and cause play above and below eedle, influence sewing machine
Sewing efficiency, even result in eedle, the damage of sewing machine hardware, therefore there is defect.
The content of the invention
In order to solve the above technical problems, the invention provides a kind of anti-loosening needle bar of sewing machine fixed structure.
The technical solution adopted for the present invention to solve the technical problems is：The anti-loosening needle bar of sewing machine fixed structure, it
Including shank, sealing shroud, piston rod and piston；The shank indoor design is cylindricality counter bore structure, the shank slidable fit
On the power transmission shaft of sewing machine；The sealing shroud is designed as cylinder, and the indoor design of the sealing shroud is cone shaped countersink structure,
The sealing shroud is fixedly mounted in the cylindricality counterbore of the shank；The piston is slidedly assemblied in the cylindricality counterbore of the shank
It is interior；The piston rod is fixedly connected with the piston.
The piston rod is designed as the bending part of " L " shape, and the upper end of the shank is designed with the anti-reverse slip of " L " shape
Track, the horizontal ends of the piston rod stretch out the track of the anti-reverse slip.
The cylindricality counterbore large radius hole of the shank is equal with the radius of the sealing shroud, and the cylindricality counterbore of the shank is small
Radius hole is equal with the radius of the piston；The cone shaped countersink large radius hole of the sealing shroud is equal with the radius of eedle, described
The cone shaped countersink minor radius hole of sealing shroud is equal with the radius of the piston.
The sealing shroud uses quality of rubber materials, and the piston uses syringe piston, the sealing shroud and the shank post
Shape counterbore is interference fit.
The operation principle of the present invention：When installing eedle, the taper that the fixing end of eedle is positioned over into the sealing shroud is sunk
In hole, the cone shaped countersink by eedle along the sealing shroud is pushed up, because the sealing shroud is quality of rubber materials, so described
Sealing shroud elastic deformation produces clamping force to eedle, and when the taper-face contact of eedle and the sealing shroud cone shaped countersink, eedle is limited
Position, is pushed away the piston rod horizontal ends are manual-up, the piston is moved up under the drive of the piston rod, due to now
It is sealing space inside the shank, so eedle is moved up under air pressure drive, due to the cone shaped countersink of the sealing shroud
Taper surface limit the movement of eedle, so now the air pressure in the space between the piston and eedle is less than ambient pressure,
Eedle moving direction and the piston moving direction by the horizontal ends of the piston rod on the contrary, turn to counnter attack under gas pressure
Into the track of slip, fixed piston rod causes eedle also to be fixed, and reaches fixed eedle and anti-loosening purpose；Unloading machine
During pin, the horizontal ends of the piston rod are removed to the track of anti-reverse slip, the horizontal ends of piston rod, the piston are pushed down on
Space air pressure between eedle recovers, and continues to push down on piston rod, and the piston is by air along extreme direction under the shank
Discharge, promote eedle to move downward, finally release eedle, reach the purpose of unloading eedle.
Advantages of the present invention：Using syringe principle, by changing the size and location of air pressure, the fixing shape of eedle is controlled
State, is caused that the fixation of eedle is more firm by the track of anti-reverse slip, is not influenceed by extraneous factor, using simple structure,
Reach anti-loosening purpose.
Brief description of the drawings
Fig. 1 is the structural representation of the anti-loosening needle bar of sewing machine fixed structure of embodiment；
Fig. 2 unclamps the structural representation of eedle for the anti-loosening needle bar of sewing machine fixed structure of embodiment；
Fig. 3 clamps the structural representation of eedle for the anti-loosening needle bar of sewing machine fixed structure of embodiment；
Fig. 4 is the structural representation of the anti-reverse sliding rail partial cross of anti-loosening needle bar of sewing machine fixed structure of embodiment
Figure.
Wherein, 1- shanks, 2- sealing shrouds, 3- piston rods, 4- pistons, 5- eedles.
Embodiment
In order to deepen the understanding of the present invention, the present invention is done below in conjunction with drawings and examples and further retouched in detail
State, the embodiment is only used for explaining the present invention, protection scope of the present invention is not constituted and limited.
As shown in figure 1, a kind of anti-loosening needle bar of sewing machine fixed structure, it include shank 1, sealing shroud 2, piston rod 3 and
Piston 4；The indoor design of shank 1 is cylindricality counter bore structure, and the shank 1 is slidedly assemblied on the power transmission shaft of sewing machine；Institute
State sealing shroud 2 and be designed as cylinder, the indoor design of the sealing shroud 2 is cone shaped countersink structure, and the sealing shroud 2 is fixedly mounted
In the cylindricality counterbore of the shank 1；The piston 4 is slidedly assemblied in the cylindricality counterbore of the shank 1；The piston rod 3
It is fixedly connected with the piston 4；The piston rod 3 is designed as the bending part of " L " shape, and the upper end of the shank 1 is designed with " L " shape
Anti-reverse slip track, the horizontal ends of the piston rod 3 stretch out the track of the anti-reverse slip；The post of the shank 1
Shape counterbore large radius hole is equal with the radius of the sealing shroud 2, cylindricality counterbore minor radius hole and the piston 4 of the shank 1
Radius it is equal；The cone shaped countersink large radius hole of the sealing shroud 2 is equal with the radius of eedle, and the taper of the sealing shroud 2 is sunk
Hole minor radius hole is equal with the radius of the piston 4；The sealing shroud 2 uses quality of rubber materials, and the piston 4 is lived using syringe
Plug, the sealing shroud 2 is interference fit with the shank cylindricality counterbore.
The operation principle of the present embodiment：When installing eedle 5, the fixing end of eedle 5 is positioned over to the cone of the sealing shroud 2
In shape counterbore, the cone shaped countersink by eedle 5 along the sealing shroud 2 is pushed up, because the sealing shroud 2 is quality of rubber materials,
So the elastic deformation of sealing shroud 2 produces clamping force to eedle 5, when the conical surface of eedle 5 and the cone shaped countersink of sealing shroud 2 connects
Eedle 5 is limited when touching, and is pushed away the horizontal ends of piston rod 3 are manual-up, the piston 4 is under the drive of the piston rod 3
Move up, because now the inside of shank 1 is sealing space, so eedle 5 is moved up under the drive of air pressure, due to
The taper surface of the cone shaped countersink of the sealing shroud 2 limits the movement of eedle 5, so now between the piston 4 and eedle 5
The air pressure in space is less than ambient pressure, and the moving direction of eedle 5 and the moving direction of piston 4 under gas pressure are on the contrary, by institute
The horizontal ends for stating piston rod 3 are turned in the track of anti-reverse slip, and fixed piston rod 3 make it that eedle 5 is also fixed, and are reached solid
Determine eedle and anti-loosening purpose；When unloading eedle 5, the horizontal ends of the piston rod 3 are removed to the track of anti-reverse slip,
The horizontal ends of piston rod 3 are pushed down on, the space air pressure between the piston 4 and eedle 5 recovers, and continues to push down on piston rod
3, the piston 4 discharges air along extreme direction under the shank, promotes eedle 5 to move downward, final to release eedle 5,
Reach the purpose of unloading eedle 5.
Above-described embodiment should not in any way limit the present invention, all to be obtained by the way of equivalent substitution or equivalency transform
Technical scheme all fall within protection scope of the present invention.
Claims (1)
1. a kind of anti-loosening needle bar of sewing machine fixed structure, it includes shank (1), sealing shroud (2), piston rod (3) and piston
(4), it is characterised in that：Shank (1) indoor design is cylindricality counter bore structure, and the shank (1) is slidedly assemblied in sewing machine
Power transmission shaft on；The sealing shroud (2) is designed as cylinder, and the indoor design of the sealing shroud (2) is cone shaped countersink structure, institute
Sealing shroud (2) is stated to be fixedly mounted in the cylindricality counterbore of the shank (1)；The piston (4) is slidedly assemblied in the shank (1)
Cylindricality counterbore in；The piston rod (3) is fixedly connected with the piston (4)；
The piston rod (3) is designed as the bending part of " L " shape, and the upper end of the shank (1) is designed with the anti-reverse slip of " L " shape
Track, the horizontal ends of the piston rod (3) stretch out the track of the anti-reverse slip；
The cylindricality counterbore large radius hole of the shank (1) is equal with the radius of the sealing shroud (2), the cylindricality of the shank (1)
Counterbore minor radius hole is equal with the radius of the piston (4)；The cone shaped countersink large radius hole of the sealing shroud (2) and the half of eedle
Footpath is equal, and the cone shaped countersink minor radius hole of the sealing shroud (2) is equal with the radius of the piston (4)；
The sealing shroud (2) uses quality of rubber materials, and the piston (4) uses syringe piston, the sealing shroud (2) and the pin
Roofbolt shape counterbore is interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510381472.0A CN104963125B (en) | 2015-07-02 | 2015-07-02 | A kind of anti-loosening needle bar of sewing machine fixed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510381472.0A CN104963125B (en) | 2015-07-02 | 2015-07-02 | A kind of anti-loosening needle bar of sewing machine fixed structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104963125A CN104963125A (en) | 2015-10-07 |
| CN104963125B true CN104963125B (en) | 2017-08-11 |
Family
ID=54217202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510381472.0A Active CN104963125B (en) | 2015-07-02 | 2015-07-02 | A kind of anti-loosening needle bar of sewing machine fixed structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN104963125B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106757842A (en) * | 2017-01-12 | 2017-05-31 | 邱晖 | A kind of automatic sewing device and its needle bar mechanism |
| CN108642737A (en) * | 2018-07-11 | 2018-10-12 | 吴江市震宇缝制设备有限公司 | A kind of use in sewing machine sewing needle fixation device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB761204A (en) * | 1953-10-28 | 1956-11-14 | Int De Finance Soc | Needle holder for sewing machines |
| US4421041A (en) * | 1981-10-07 | 1983-12-20 | The Singer Company | Needle design and clamping system |
| JP2009011561A (en) * | 2007-07-04 | 2009-01-22 | Brother Ind Ltd | Tool holder, processing device and sewing machine |
| CN103726240A (en) * | 2013-12-27 | 2014-04-16 | 吴江市震宇缝制设备有限公司 | Sewing machine needle fast mounting seat |
| CN204780193U (en) * | 2015-07-02 | 2015-11-18 | 吴江市震宇缝制设备有限公司 | Locking sewing needle pole fixed structure that moves |
-
2015
- 2015-07-02 CN CN201510381472.0A patent/CN104963125B/en active Active
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| Publication number | Publication date |
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| CN104963125A (en) | 2015-10-07 |
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