CN116005373A - Oil supply lubrication mechanism in sewing machine shaft - Google Patents
Oil supply lubrication mechanism in sewing machine shaft Download PDFInfo
- Publication number
- CN116005373A CN116005373A CN202310060439.2A CN202310060439A CN116005373A CN 116005373 A CN116005373 A CN 116005373A CN 202310060439 A CN202310060439 A CN 202310060439A CN 116005373 A CN116005373 A CN 116005373A
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- oil
- shaft
- needle bar
- connecting rod
- hose
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- 238000005461 lubrication Methods 0.000 title claims abstract description 39
- 238000009958 sewing Methods 0.000 title claims abstract description 37
- 239000003921 oil Substances 0.000 claims abstract description 316
- 239000010687 lubricating oil Substances 0.000 claims abstract description 41
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052802 copper Inorganic materials 0.000 claims abstract description 10
- 239000010949 copper Substances 0.000 claims abstract description 10
- 238000004064 recycling Methods 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000010721 machine oil Substances 0.000 claims 1
- 210000002445 nipple Anatomy 0.000 claims 1
- 230000000712 assembly Effects 0.000 abstract description 3
- 238000000429 assembly Methods 0.000 abstract description 3
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000001050 lubricating effect Effects 0.000 description 5
- 101150006573 PAN1 gene Proteins 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses an oil supply lubrication mechanism in a sewing machine shaft, which comprises an oil pan, an oil pump, an oil inlet hose, a branch hose, an oil ring component I, an oil distribution component, an upper shaft, a needle bar balance crank, a needle bar connecting rod shaft, a needle bar bracket, a swinging shaft connecting rod, a felt, an oil return copper pipe, a swinging shaft, an oil ring component II, an oil return hose, an oil quantity adjusting pin component and an oil nozzle joint, wherein the oil pan is arranged on the upper shaft; the oil pump conveys lubricating oil from the oil pan into the oil distribution assembly through the oil inlet hose, the oil distribution assembly is respectively connected to the first oil ring assembly and the second oil ring assembly through the plurality of branch oil nozzles, the two oil ring assemblies are respectively sleeved on the swinging shaft and the upper shaft, the lubricating oil enters the shaft through small holes on the two shafts and is respectively conveyed to connecting rod parts connected with the shafts for lubrication, and finally the lubricating oil flows back to the oil pan to finish reciprocating recycling. The circulation lubrication structure designed by the invention can provide better lubrication for the operation among all parts of the sewing machine, and can prolong the service life of the sewing machine.
Description
Technical Field
The invention relates to the technical field of sewing machines, in particular to an oil supply lubrication mechanism in a sewing machine shaft.
Background
A set of lubrication mechanism is arranged inside the sewing machine on the market at present. In the process of high-speed operation of the sewing machine, the internal parts continuously move mutually and gradually wear, and finally the sewing machine cannot normally operate, so that a lubrication system of the sewing machine is very important to the sewing machine; however, the conventional lubrication mechanism is not effective enough and has defects, so that improvement is needed.
Disclosure of Invention
The invention aims to solve the problems in the background art and provides an oil supply and lubrication mechanism in a sewing machine shaft.
In order to solve the technical problems, the technical scheme of the invention is as follows: an oil supply lubrication mechanism in a sewing machine shaft comprises an oil pan, an oil pump, an oil inlet hose, a branch hose, an oil ring assembly I, an oil distribution assembly, an upper shaft, a needle bar balance crank, a needle bar connecting rod shaft, a needle bar bracket, a swinging shaft connecting rod, a felt, an oil return copper pipe, a swinging shaft, an oil ring assembly II, an oil return hose, an oil quantity adjusting pin assembly and an oil nozzle joint;
the oil pump conveys lubricating oil from the oil pan into the oil distribution assembly through an oil inlet hose, a plurality of branch oil nozzles are arranged on the oil distribution assembly and are respectively connected to the first oil ring assembly and the second oil ring assembly through branch hoses, the second oil ring assembly and the first oil ring assembly are respectively sleeved on the swinging shaft and the upper shaft, the lubricating oil enters the shaft through small holes on the swinging shaft and the upper shaft, the lubricating oil is respectively conveyed to connecting rod parts connected with the shaft through small holes on the shaft to lubricate, and finally the lubricating oil can flow back to the oil pan from the oil return pipe to finish reciprocating recycling of the lubricating oil.
In the oil supply lubrication mechanism in the sewing machine shaft, the oil distribution assembly is in a T shape, the oil distribution assembly (7) is fixed on the sewing machine shell through two through holes on the oil distribution assembly by bolts and nuts, three oil nozzles are arranged at the cylindrical end on the oil distribution assembly, the tail end oil nozzle is connected with an oil inlet hose, the other two oil nozzles are connected with branch hoses, and a 1-in and 2-out oil path mode is formed.
In the above-mentioned oil feeding lubrication mechanism in sewing machine shaft, the first oil ring subassembly comprises 2 oil blanket and tubular body, and the second oil ring subassembly comprises 2 oil blanket and tubular body, and 1 oilhole has all been seted up respectively to the two, and the inside that the oilhole corresponds is the oil groove, can install glib joint on the oilhole, be used for connecting branch hose.
In the oil supply lubrication mechanism in the sewing machine shaft, the connecting parts of the tail ends of the oil inlet hose and the branch hose are clamped and fixed by adopting the oil pipe clamp, so that the hose is prevented from falling off.
In the oil supply and lubrication mechanism in the sewing machine shaft, the second oil ring component and the first oil ring component are respectively sleeved at the tail ends of the swinging shaft and the upper shaft, the cylindrical surfaces of the tail ends of the two shafts are provided with 1 one-way oil inlet hole, and the oil grooves of the second oil ring component and the first oil ring component are aligned with the oil inlet holes of the cylindrical surfaces of the tail ends of the two shafts, so that lubricating oil can conveniently flow into the shafts; the front end parts of the swinging shaft and the upper shaft are respectively provided with an oil outlet, the two shafts are respectively provided with an oil duct connected with the oil inlet hole and the oil outlet hole, and the adjusting pin assembly is arranged at the end part of the oil duct and used for adjusting the oil outlet flow of the oil outlet.
In the oil supply and lubrication mechanism in the sewing machine shaft, the front end of the swinging shaft is fixedly arranged with the swinging shaft connecting rod, and the oil through holes are formed between the shaft holes at the two ends of the swinging shaft connecting rod, so that the oil through holes are aligned with the oil outlet holes at the front end of the swinging shaft, and the lubricating oil can flow in conveniently, and the lubricating mechanism can lubricate the transmission parts of the sewing machine.
In the oil supply lubrication mechanism in the sewing machine shaft, the front end of the upper shaft is fixed with the needle bar balancing crank, the needle bar balancing crank is connected with the needle bar connecting rod through the needle bar connecting rod shaft, an oil groove and an oil outlet are formed in a shaft hole in the middle of the needle bar balancing crank, and the oil groove in the needle bar balancing crank is aligned with the oil outlet at the front end of the upper shaft.
In the oil supply lubrication mechanism in the sewing machine shaft, an oil passage is formed between shaft holes of the needle bar connecting rod, one end of the needle bar connecting rod is sleeved on the needle bar connecting rod shaft, the other end of the needle bar connecting rod is connected with the needle bar bracket, in addition, 2 one-way oil holes are formed in the needle bar connecting rod shaft, and one oil hole is aligned with an oil outlet hole in a shaft hole above the needle bar balance crank.
In the above-mentioned oil supply lubrication mechanism in a sewing machine shaft, the needle bar bracket is inserted into the shaft hole at the end of the needle bar connecting rod, the shaft of the needle bar bracket is also provided with an oil hole, and similarly, the oil hole of the needle bar connecting rod is connected with the oil duct of the needle bar bracket.
In the oil supply and lubrication mechanism in the sewing machine shaft, the tail end of the upper shaft and the tail end oil hole of the swinging shaft respectively flow into lubricating oil, and can flow out of the oil channels of the needle bar bracket and the swinging shaft connecting rod respectively, the oil quantity adjusting pin assembly can adjust the oil flow in a visible mode, the oil quantity adjusting pin assembly is rotated, the gaps between the main oil channels in the upper shaft and the swinging shaft and the oil outlet holes at the front ends of the main oil channel and the swinging shaft are changed, and the oil quantity can be controlled.
In the oil supply lubrication mechanism in the sewing machine shaft, the oil felt finally collects the flowing lubricating oil in a concentrated manner, the oil return end of the oil pump is connected with the oil return hose, one end of the oil return copper pipe is connected with the oil return hose, the other end of the oil return copper pipe is inserted in the oil felt, and when the oil pump starts to work, the lubricating oil in the oil felt can be sucked back into the oil pan.
The beneficial effects of the invention are as follows:
the circulation lubrication structure designed by the invention can provide reciprocating circulation lubrication for the sewing machine, provide better lubrication effect for the operation among all parts, and prolong the service life of the sewing machine.
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a cross-sectional view of two oil ring assemblies of the present invention;
FIG. 3 is a block diagram of two oil ring assemblies of the present invention connected to an upper shaft, a wobble shaft;
FIG. 4 is a block diagram of a portion of a swing axle in a lubricated connection in accordance with the present invention;
fig. 5 is a block diagram of a lubricating connection for the upper shaft section of the present invention.
Description of the embodiments
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention; in the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the invention.
The invention is further described below with reference to the drawings.
Referring to fig. 1 to 5, the present invention provides an oil supply lubrication mechanism in a sewing machine shaft, which comprises an oil pan 1, an oil pump 2, an oil inlet hose 3, a branch hose 4, an oil ring component one 6, an oil distribution component 7, an upper shaft 8, a needle bar balancing crank 9, a needle bar connecting rod 10, a needle bar connecting rod shaft 11, a needle bar bracket 12, a swinging shaft connecting rod 13, a felt 14, an oil return copper pipe 15, a swinging shaft 16, an oil ring component two 17, an oil return hose 18, an oil amount adjusting pin component 19 and an oil nozzle joint 20.
As shown in fig. 1, the assembly schematic diagram of the mechanism is that the oil distributing assembly 7 is firstly installed at the top of the casing, 3 oil nozzles on the oil distributing assembly are respectively connected through hoses, wherein a first oil nozzle is connected to an oil outlet of the oil pump 2 through an oil inlet hose 3, a second oil nozzle is connected with a branch hose 4, the branch hose 4 is respectively connected to oil nozzle connectors 20 on the oil ring assembly I6 and the oil ring assembly II 17, and the oil nozzle and hose connection parts are clamped by adopting an oil pipe clamp 5.
Referring to fig. 3, the first oil ring assembly 6 is then sleeved at the tail end of the upper shaft 8, and the second oil ring assembly 17 is sleeved at the tail end of the oscillating shaft 16; as shown in fig. 2, the middle parts of the first oil ring component 6 and the second oil ring component 17 are provided with a section of oil groove, the oil groove is provided with an oil inlet, lubricating oil can flow in, after the oil seals at the two ends are matched with the shaft, the oil leakage prevention effect can be achieved, and the lubricating oil cannot relatively rotate along with the shaft, so that the lubricating oil flows into the oil ring and can be stored in the oil groove of the oil ring.
Referring to fig. 4, in the structure that after the lubricating oil flows into the oil distribution assembly 7, the lubricating oil is distributed into the oscillating shaft 16, the end of the oscillating shaft 16 is provided with an oil inlet hole, and the oil inlet hole is just positioned in the middle oil groove section of the oil ring assembly two 17, so that when the oscillating shaft 16 rotates, the lubricating oil can enter the inner oil passage of the oscillating shaft 16, an oil outlet and an oil quantity adjusting pin assembly 19 are arranged at the front end position of the oscillating shaft 16, and when the lubricating oil flows out from the oil outlet, the gap of the oil outlet hole can be changed by rotating the oil quantity adjusting pin assembly 19, so that the flow quantity of the flowing lubricating oil can be controlled; an oil hole and an oil duct are also arranged between the shaft holes of the swinging shaft connecting rod 13, the oil hole in the shaft hole of the swinging shaft connecting rod 13 is aligned with the oil outlet hole at the front end of the swinging shaft 16, so that lubricating oil can flow through the swinging shaft connecting rod 13 and flow out of the oil outlet hole at the tail end of the swinging shaft connecting rod 13, and a transmission mechanism for lubricating the tail end of the swinging shaft connecting rod 13 is achieved.
Referring to fig. 5, the lubricating oil is split into the upper shaft 8 after flowing into the oil splitting assembly 7, and then flows into each transmission part connected with the upper shaft 8, thereby achieving a certain lubricating effect; the tail end of the upper shaft 8 is provided with an oil inlet, and the oil inlet is just positioned at the middle oil groove section of the first oil ring assembly 6, so that lubricating oil can enter an inner oil duct of the upper shaft 8, and the shaft surfaces of different sections of the upper shaft 8 are provided with one-way oil outlet holes, so that the lubricating oil can flow into other transmission parts connected with the upper shaft 8; the front end position of the upper shaft 8 is provided with an oil outlet and oil quantity adjusting pin assembly 19, and the oil quantity adjusting pin assembly 19 is also used for adjusting the oil outlet gap of the oil outlet at the front end of the upper shaft 8 so as to achieve the effect of adjusting the oil quantity.
The needle bar balance crank 9 is arranged at the front end of the upper shaft 8, an oil groove and an oil hole are arranged in the needle bar balance crank 9, the oil hole in the needle bar balance crank 9 is aligned with the oil hole at the front end of the upper shaft 8, an oil passage is also arranged between the shaft holes of the needle bar connecting rod 10, the needle bar connecting rod 10 is sleeved on the needle bar connecting rod shaft 11, in addition, 2 unidirectional oil ports are also arranged on the needle bar connecting rod shaft 11, one oil hole is aligned with the oil hole in the shaft hole above the needle bar balance crank 9, and lubricating oil can flow through the needle bar balance crank 9, the needle bar connecting rod shaft 11 and the needle bar connecting rod 10 after coming out from the oil hole at the front end of the upper shaft 8.
The needle bar bracket 12 is penetrated in the shaft hole at the tail end of the needle bar connecting rod 10, the shaft of the needle bar bracket 12 is also provided with an oil hole, and similarly, the oil hole of the needle bar connecting rod 10 is connected with the oil passage of the needle bar bracket 12, and lubricating oil can flow into the oil passage of the needle bar bracket 12 from the needle bar connecting rod 10 to lubricate the connected transmission part.
Finally, lubricating oil flowing out of the tail end of the transmission part is collected by a felt 14 in the shell, an oil return copper pipe 15 is inserted into the felt 14, the oil return copper pipe 15 is connected with an oil return hose 18, and the other end of the oil return hose 18 is connected with an oil return port of the oil pump 2 to form a closed loop oil path; when the sewing machine starts up and runs, the oil pump 2 starts to run at the same time, lubricating oil can be supplied from the oil pan 1 to each transmission part connected with the upper shaft 8 and the swinging shaft 16, so that the lubricating effect is achieved, and finally the lubricating oil can return to the oil pan 1, so that the reciprocating circulation lubrication can be realized, and the service life of the sewing machine can be prolonged.
The above describes in detail an oil supply lubrication mechanism in a sewing machine shaft provided by the embodiment of the present invention, and specific examples are applied to illustrate the principle and implementation of the present invention, and the above description of the embodiment is only used to help understand the technical scheme disclosed by the present invention; meanwhile, as for the general technical users in the art, the present invention is not limited to the above description, since the specific embodiments and application ranges are changed according to the ideas of the present invention.
Claims (11)
1. An in-machine oil supply lubrication mechanism of sewing machine, its characterized in that: the oil pan comprises an oil pan (1), an oil pump (2), an oil inlet hose (3), a branch hose (4), an oil ring assembly I (6), an oil separating assembly (7), an upper shaft (8), a needle bar balance crank (9), a needle bar connecting rod (10), a needle bar connecting rod shaft (11), a needle bar bracket (12), a swinging shaft connecting rod (13), a felt (14), an oil return copper pipe (15), a swinging shaft (16), an oil ring assembly II (17), an oil return hose (18), an oil quantity adjusting pin assembly (19) and an oil nozzle joint (20);
the oil pump (2) conveys lubricating oil from the oil pan (1) to the oil distribution assembly (7) through the oil inlet hose (3), a plurality of branch oil nozzles are arranged on the oil distribution assembly (7), the branch oil nozzles are respectively connected to the oil ring assembly I (6) and the oil ring assembly II (17) through the branch hose (4), the oil ring assembly II (17) and the oil ring assembly I (6) are respectively sleeved on the swinging shaft (16) and the upper shaft (8), the lubricating oil enters the shaft through small holes on the swinging shaft (16) and the upper shaft (8), the lubricating oil is respectively conveyed to connecting rod parts connected with the shaft through small holes on the shaft to lubricate, and finally the lubricating oil can flow back from the oil return pipe oil pan to complete reciprocating recycling of the lubricating oil.
2. The in-machine shaft oil feed lubrication mechanism of claim 1, wherein: the shape of the oil distribution assembly (7) is T-shaped, the oil distribution assembly (7) is fixed on the sewing machine shell through two through holes on the oil distribution assembly through bolts and nuts, three oil nozzles are arranged at the cylindrical end on the oil distribution assembly (7), the tail end oil nozzle is connected with an oil inlet hose (3), and the other two oil nozzles are connected with a branch hose (4) to form an oil path mode of 1 inlet and 2 outlet.
3. The in-machine shaft oil feed lubrication mechanism of claim 1, wherein: the oil ring assembly I (6) consists of 2 oil seals (62) and a tubular body (61), the oil ring assembly II (17) consists of 2 oil seals (172) and a tubular body (171), the two oil seals are respectively provided with 1 oil hole, the oil holes are correspondingly provided with oil grooves, and the oil holes are provided with oil nipple joints (20) for connecting branch hoses (4).
4. A sewing machine shaft oil feed lubrication mechanism according to claims 1 to 3, wherein: the tail end connection parts of the oil inlet hose (3) and the branch hose (4) are clamped and fixed by an oil pipe clamp (5) so as to prevent the hose from falling off.
5. The in-machine shaft oil feed lubrication mechanism of claim 1, wherein: the oil ring assembly II (17) and the oil ring assembly I (6) are respectively sleeved at the tail ends of the swinging shaft (16) and the upper shaft (8), the cylindrical surfaces at the tail ends of the two shafts are provided with 1 one-way oil inlet hole, and the oil grooves of the oil ring assembly II (17) and the oil ring assembly I (6) are aligned with the oil inlet holes on the cylindrical surfaces at the tail ends of the two shafts and are convenient for lubricating oil to flow into the shafts; the front end parts of the swinging shaft (16) and the upper shaft (8) are respectively provided with oil outlets, the two shafts are respectively provided with oil channels connected with the oil inlet and the oil outlet, and the adjusting pin assembly (19) is arranged at the end part of the oil channel and used for adjusting the oil outlet flow of the oil outlet.
6. The oil feed lubrication mechanism for a sewing machine shaft of claim 5, wherein: the front end of the swinging shaft (16) is fixedly arranged with the swinging shaft connecting rod (13), an oil through hole is formed between shaft holes at two ends of the swinging shaft connecting rod (13), and the oil through hole is aligned with an oil outlet at the front end of the swinging shaft (16), so that lubricating oil can flow in conveniently, and a transmission part of the swinging shaft is lubricated.
7. The oil feed lubrication mechanism for a sewing machine shaft of claim 5, wherein: the front end of the upper shaft (8) is fixed with a needle bar balance crank (9), the needle bar balance crank (9) is connected with a needle bar connecting rod (10) through a needle bar connecting rod shaft (11), an oil groove and an oil outlet are formed in a shaft hole in the middle of the needle bar balance crank (9), and the oil groove in the needle bar balance crank (9) is aligned with the oil outlet at the front end of the upper shaft (8).
8. The in-machine shaft oil feed lubrication mechanism of claim 7, wherein: an oil passage is formed between shaft holes of the needle bar connecting rod (10), one end of the needle bar connecting rod (10) is sleeved on the needle bar connecting rod shaft (11), the other end of the needle bar connecting rod is connected with the needle bar bracket (12), in addition, 2 unidirectional oil holes are formed in the needle bar connecting rod shaft (11), and one oil hole is aligned with an oil outlet hole in the shaft hole above the needle bar balance crank (9).
9. The in-machine shaft oil feed lubrication mechanism of claim 7, wherein: the needle bar bracket (12) is penetrated in the shaft hole at the tail end of the needle bar connecting rod (10), the shaft of the needle bar bracket (12) is also provided with an oil hole, and the oil hole of the needle bar connecting rod (10) is connected with the oil duct of the needle bar bracket (12) in the same way.
10. An in-machine-shaft oil feed lubrication mechanism according to claims 5 to 9, wherein: the tail end of the upper shaft (8) and the tail end oil hole of the swinging shaft (16) respectively flow into lubricating oil, the lubricating oil can flow out of oil ducts of the needle bar bracket (12) and the swinging shaft connecting rod (13) respectively, the oil quantity adjusting pin assembly (19) can visually adjust the oil flow, the oil quantity adjusting pin assembly (19) is rotated, the gaps between the main oil duct in the upper shaft (8) and the swinging shaft (16) and the oil outlet holes at the front ends of the main oil duct and the swinging shaft are changed, and the oil quantity can be controlled.
11. The in-machine shaft oil feed lubrication mechanism of claim 1, wherein: finally, the oil felt (14) collects the flowing lubricating oil in a concentrated mode, an oil return end of the oil pump (2) is connected with an oil return hose (18), one end of an oil return copper pipe (15) is connected with the oil return hose (18), the other end of the oil return copper pipe (15) is inserted into the oil felt (14), and when the oil pump (2) starts to work, the lubricating oil in the oil felt (14) can be sucked back into the oil pan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310060439.2A CN116005373A (en) | 2023-01-14 | 2023-01-14 | Oil supply lubrication mechanism in sewing machine shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310060439.2A CN116005373A (en) | 2023-01-14 | 2023-01-14 | Oil supply lubrication mechanism in sewing machine shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116005373A true CN116005373A (en) | 2023-04-25 |
Family
ID=86028072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310060439.2A Withdrawn CN116005373A (en) | 2023-01-14 | 2023-01-14 | Oil supply lubrication mechanism in sewing machine shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116005373A (en) |
-
2023
- 2023-01-14 CN CN202310060439.2A patent/CN116005373A/en not_active Withdrawn
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20230425 |
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| WW01 | Invention patent application withdrawn after publication |