CN219450080U - Dry type lubrication presser foot structure of sewing machine - Google Patents
Dry type lubrication presser foot structure of sewing machine Download PDFInfo
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- CN219450080U CN219450080U CN202320497624.3U CN202320497624U CN219450080U CN 219450080 U CN219450080 U CN 219450080U CN 202320497624 U CN202320497624 U CN 202320497624U CN 219450080 U CN219450080 U CN 219450080U
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- presser foot
- sewing machine
- coating layer
- foot structure
- light metal
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Abstract
The application relates to a dry type lubrication presser foot structure of a sewing machine, which comprises a pressure adjusting component, a bushing and a light metal presser foot rod, wherein the bushing is connected to one end of the pressure adjusting component and is provided with a shaft hole; the light metal presser foot bar is movably connected with the shaft hole in a penetrating way, and a coating layer is arranged on the surface of the light metal presser foot bar. Therefore, when the light metal presser foot bar reciprocates relative to the bushing, no additional lubricating oil is needed, and the dry lubrication effect is achieved.
Description
Technical Field
The present application relates to a sewing machine, and more particularly to a dry lubrication presser foot structure of a sewing machine.
Background
The existing presser foot structure of the sewing machine mainly comprises a pressure adjusting mechanism, a copper sleeve and a steel presser foot rod, wherein the steel presser foot rod is movably connected with the copper sleeve in a penetrating way, so that an oil groove is arranged in the copper sleeve, lubricating oil is attached to the copper sleeve or the oil groove in a dipping or injecting mode, and the like, so that when the steel presser foot rod moves in and out of the copper sleeve in a reciprocating way, a sufficient lubricating effect can be obtained.
However, these lubricating oils will generate splashed oil along with the movement of the steel presser bar, and after these oils adhere to the sewn objects, these sewn objects must be subjected to various processes such as stain removal, drying, leveling, etc. again.
Therefore, how to avoid the possibility of adhering greasy dirt to the sewed object during the sewing operation of the sewing machine on the sewed object, thereby omitting the steps of removing the greasy dirt, drying, leveling and the like greatly, and being the subject of improvement of the applicant.
Disclosure of Invention
An object of the present utility model is to provide a dry type lubrication presser foot structure of a sewing machine, in which a light metal presser foot bar does not need to be additionally added with lubricating oil when reciprocating relative to a bushing, thereby achieving a dry type lubrication effect.
In order to achieve the above-mentioned purpose, the present application provides a dry-type lubrication presser foot structure of a sewing machine, including a pressure adjusting assembly, a bushing and a light metal presser foot bar, wherein the bushing is connected to one end of the pressure adjusting assembly, the bushing has a shaft hole; the light metal presser foot bar is movably connected with the shaft hole in a penetrating way, and a coating layer is arranged on the surface of the light metal presser foot bar.
In one embodiment, the light metal presser foot bar is an aluminum alloy, and the coating layer is a ceramic oxide film formed on the surface of the light metal presser foot bar by anodic treatment.
In one embodiment, the coating layer further comprises a coating layer formed by impregnating the ceramic-like oxide film with a teflon material.
In one embodiment, the bushing is an aluminum alloy, and another coating layer is arranged on the inner surface of the shaft hole of the bushing.
In one embodiment, the other coating layer is another type of ceramic oxide film formed on the inner surface of the shaft hole of the bushing by anodic treatment.
In one embodiment, the other coating layer further comprises a coating layer formed by impregnating another type of ceramic oxide film with a teflon material.
In one embodiment, the pressure adjusting assembly comprises a sleeve, an adjusting screw and a positioning knob, wherein the sleeve is provided with a first internal thread, the adjusting screw is provided with an external thread, the positioning knob is provided with a second internal thread, the positioning knob is overlapped with the sleeve, and the adjusting screw is sequentially screwed with the first internal thread and the second internal thread through the external thread.
In one embodiment, the pressure adjusting assembly further comprises an elastic body and a connecting piece, the adjusting screw is further provided with a central column, two ends of the connecting piece are respectively connected with the sleeve and the bushing, and the elastic body is sleeved on the outer periphery of the central column and is formed inside the connecting piece.
In one embodiment, the bushing further comprises a plurality of O-rings, wherein the bushing is provided with a plurality of grooves, and each O-ring system is sleeved on each groove.
In one embodiment, the light metal presser foot bar is provided with a first through hole and a second through hole, wherein the first through hole is used for plugging the first bolt, and the second through hole is used for plugging the second bolt.
The light presser foot feedback device has the following effects that the light presser foot bar is arranged, so that the light presser foot feedback device can achieve light presser foot dynamic feedback, and is sensitive and quick. Can eliminate the subsequent washing and other procedures, thereby greatly saving the processing time and labor cost.
Drawings
Fig. 1 is an exploded view of a dry lubricant presser foot structure of a sewing machine of the present application.
Fig. 2 is an exploded view of the bushing and light metal presser bar of the present application.
FIG. 3 is an external view showing a combination of dry type lubricant presser foot structure of the sewing machine of the present application.
Fig. 4 is a sectional view showing a combination of dry type lubricant presser foot structures of the sewing machine of the present application.
Fig. 5 is a combined appearance view of the present application applied to a overlock sewing machine.
Fig. 6 is a sectional view showing a state of use of the present application applied to a overlock sewing machine.
Reference numerals illustrate:
1, a dry type lubrication presser foot structure;
10, a pressure adjusting assembly;
11, a sleeve;
111, first internal threads;
12, adjusting a screw;
121, external threads;
122, a center column;
13, positioning a knob;
131 a second internal thread;
14, elastomer;
15, connecting pieces;
20, a bushing;
21, a shaft hole;
210 another cladding layer;
22, grooves;
30, a light metal presser foot bar;
301, a coating layer;
302, first perforation;
303, second perforation;
31, a first bolt;
32, a second bolt;
a 40:o-ring;
8, overlock sewing machine;
81, lower stand;
82, an upper machine body;
83, a foot pressing plate mechanism;
831, a trigger;
832 presser foot arm assembly.
Detailed Description
The detailed description and technical content related to the present application are described below in conjunction with the accompanying drawings, which are provided for reference and illustration only, and are not intended to limit the present application.
Referring to fig. 1 to 4, the present application provides a dry type lubrication presser foot structure of a sewing machine, wherein the dry type lubrication presser foot structure 1 mainly comprises a pressure adjusting assembly 10, a bushing 20 and a light metal presser foot bar 30.
The pressure adjusting assembly 10 mainly comprises a sleeve 11, an adjusting screw 12, a positioning knob 13, an elastic body 14 and a connecting piece 15, wherein the sleeve 11 is provided with a first internal thread 111 (see fig. 6), the adjusting screw 12 is provided with an external thread 121 (see fig. 6) and a central column 122, the positioning knob 13 is provided with a second internal thread 131 (see fig. 6), the adjusting screw 12 is screwed with the first internal thread 111 and the second internal thread 131 by the external thread 121, one end of the connecting piece 15 is connected below the sleeve 11, the elastic body 14 is a compression spring, and the compression spring is sleeved around the external periphery of the central column 122 and is formed inside the connecting piece 15.
A bushing 20 is connected to the end of the connecting member 15 of the pressure regulating assembly 10 remote from the sleeve 11, the bushing 20 having a shaft bore 21. A plurality of grooves 22 are provided in the upper section of the bush 20.
The light metal presser foot bar 30 is movably inserted into the shaft hole 21 of the bush 20, and a coating layer 301 is provided on the surface of the light metal presser foot bar 30.
In one embodiment, the light metal presser foot 30 is made of aluminum alloy, and the coating 301 is a kind of ceramic oxide film with extremely high hardness formed on the surface of the light metal presser foot 30 by anodic treatment, and the ceramic oxide film has the characteristics of abrasion resistance, corrosion resistance, insulation and the like.
In one embodiment, after the light metal presser foot 30 is anodized, the alumina on the surface forms a porous Hexagonal Close Packed (HCP) structure, and the regularly arranged pores dissolve into tubular structures with the increase of oxidation time, so that the teflon (polytetrafluoroethylene, PTFE) can be impregnated, and the coating layer 301 is a coating layer with teflon material, which can reduce the friction coefficient, acid and alkali resistance, anti-sticking property and the like of the surface of the light metal presser foot 30, besides the excellent dry lubrication effect.
In one embodiment, the middle section of the light metal presser foot bar 30 is provided with a first through hole 302, and the lower section of the light metal presser foot bar 30 is provided with a second through hole 303, wherein the first through hole 302 is used for inserting the first bolt 31, and the second through hole 303 is used for inserting the second bolt 32.
In one embodiment, the liner 20 may be an aluminum alloy, and the inner surface of the shaft hole 21 of the liner 20 is provided with another coating layer 210, which is another type of ceramic oxide film with extremely high hardness formed on the inner surface of the shaft hole 21 of the liner 20 by anodic treatment; similarly, a Teflon (polytetrafluoroethylene, PTFE) impregnation treatment may be used to provide another coating 210 as a coating with Teflon material.
The dry lubrication presser foot structure 1 of the present application further includes a plurality of O-rings 40, wherein each O-ring 40 is respectively sleeved in the groove 22 and is pressed by the connecting member 15 and the sewing machine body (see fig. 6).
Referring to fig. 5 and 6, the dry lubrication presser foot structure 1 of the present application may be applied to a overlock sewing machine 8, but is not limited to this, and mainly includes a lower frame 81, an upper frame 82 connected above the lower frame 81, and a presser mechanism 83 connected to the upper frame 82, wherein the presser mechanism 83 mainly includes a trigger 831 and a presser arm assembly 832. In use, the presser arm assembly 832 is pressed against the clothing being sewn, and the movement of the clothing being sewn drives the light metal presser bar 30 to reciprocally move in and out relative to the bushing 20, so that the dry lubrication effect can be achieved by the arrangement of the coating 301 and the other coating 210.
In summary, the dry type lubrication presser foot structure of the sewing machine of the present application can achieve the expected purpose of use, solve the conventional drawbacks, and completely meet the requirements of the application patent application due to the novelty and progress.
Claims (10)
1. A dry lubrication presser foot structure of a sewing machine, comprising:
a pressure adjustment assembly;
a bushing connected to one end of the pressure adjusting assembly, the bushing having a shaft hole; and
the light metal presser foot rod is movably connected with the shaft hole in a penetrating way, and a coating layer is arranged on the surface of the light metal presser foot rod.
2. The dry type lubrication presser foot structure of a sewing machine according to claim 1, wherein the light metal presser foot bar is an aluminum alloy, and the coating layer is a type of ceramic oxide film formed on a surface of the light metal presser foot bar by anodic treatment.
3. The dry lubrication presser foot structure of a sewing machine of claim 2, wherein the coating layer further includes a coating layer of teflon material on the ceramic-like oxide film by impregnation treatment.
4. The dry type lubrication presser foot structure of a sewing machine according to claim 1, wherein the bush is made of an aluminum alloy, and a further coating layer is provided on an inner surface of the shaft hole of the bush.
5. The dry lubrication presser foot structure of a sewing machine of claim 4, wherein the other coating layer is another type of ceramic oxide film formed on an inner surface of the shaft hole of the bush by anodic treatment.
6. The dry lubrication presser foot structure of a sewing machine of claim 5, wherein said another coating layer further includes a coating layer of teflon material on said another type of ceramic oxide film by impregnation treatment.
7. The dry lubrication presser foot structure of a sewing machine of claim 1, wherein the pressure adjusting assembly comprises a sleeve, an adjusting screw and a positioning knob, the sleeve has a first internal thread, the adjusting screw has an external thread, the positioning knob has a second internal thread, the positioning knob overlaps the sleeve, and the adjusting screw is screwed with the first internal thread and the second internal thread in sequence with the external thread.
8. The dry type lubrication presser foot structure of a sewing machine of claim 7, wherein the pressure adjusting assembly further comprises an elastic body and a connecting member, the adjusting screw further has a center post, both ends of the connecting member are respectively connected with the sleeve and the bushing, and the elastic body is sleeved around the outer periphery of the center post and formed inside the connecting member.
9. The dry lubrication presser foot structure of a sewing machine of claim 1, further comprising a plurality of O-rings, wherein said bushing is provided with a plurality of grooves, and wherein each O-ring is respectively sleeved in each of said grooves.
10. The dry lubrication presser foot structure of a sewing machine of claim 1, wherein the light metal presser foot bar is provided with a first through hole for the insertion of a first pin and a second through hole for the insertion of a second pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320497624.3U CN219450080U (en) | 2023-03-15 | 2023-03-15 | Dry type lubrication presser foot structure of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320497624.3U CN219450080U (en) | 2023-03-15 | 2023-03-15 | Dry type lubrication presser foot structure of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219450080U true CN219450080U (en) | 2023-08-01 |
Family
ID=87413583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320497624.3U Active CN219450080U (en) | 2023-03-15 | 2023-03-15 | Dry type lubrication presser foot structure of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219450080U (en) |
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2023
- 2023-03-15 CN CN202320497624.3U patent/CN219450080U/en active Active
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