CN211446172U

CN211446172U - Lubricating device for shaft sleeve of sewing machine

Info

Publication number: CN211446172U
Application number: CN201821465418.XU
Authority: CN
Inventors: 季锴
Original assignee: Suzhou Kaicheng Sewing Equipment Co ltd
Current assignee: Suzhou Kaicheng Sewing Equipment Co ltd
Priority date: 2018-09-07
Filing date: 2018-09-07
Publication date: 2020-09-08
Anticipated expiration: 2028-09-07

Abstract

The utility model relates to a lubricating device of a shaft sleeve for a sewing machine, which comprises a shaft sleeve, wherein the outer side of the shaft sleeve is fixedly connected with an annular bulge, the top of the shaft sleeve is provided with an oil delivery hole, the inner wall of the shaft sleeve is provided with a first branch flow passage and a second branch flow passage, and the intersection end of the first branch flow passage and the second branch flow passage is communicated with the oil delivery hole, the lubricating oil lubricating device has simple structure and reasonable design, can increase the contact area of the lubricating oil and a rotating shaft, when the rotating shaft rotates, the lubricating oil can be uniformly coated on the outer wall of the rotating shaft, so that the lubricating oil can better form a protective oil film between the rotating shaft and the shaft sleeve, is convenient for lubrication, can collect oil mist formed between the rotating shaft and the shaft sleeve, and can enter an oil storage cavity through an oil return hole, reduces the waste of the use of the lubricating, the heat dissipation of the rotating shaft is facilitated, and the service life of the shaft sleeve and the service life of the rotating shaft are effectively prolonged.

Description

Lubricating device for shaft sleeve of sewing machine

Technical Field

The utility model relates to a lubricating arrangement of axle sleeve for sewing machine belongs to sewing machine technical field.

Background

The pivot in the sewing machine passes through the axle sleeve location in the casing, in order to guarantee the lubrication of pivot when high-speed rotation, can set up lubricating structure in the axle sleeve usually, but traditional lubricating structure is at lubricated in-process, it is inhomogeneous to oiling of pivot, often take place wearing and tearing between axle sleeve and the pivot, produce high temperature, the life that leads to the axle sleeve reduces, and the oil seepage condition appears easily, and lubricating oil will be along with the high-speed operation of pivot to axle sleeve rear end operation at lubricated in-process, and then the oil mist can appear when the afterbody blowout from the axle sleeve, the oil mist forms the oil accumulation at sewing machine head gray machine, and then pollutes the cloth.

Disclosure of Invention

The technical problem to be solved by the utility model is to overcome the existing defects, provide a lubricating device of shaft sleeve for sewing machine, through being equipped with first subchannel and second subchannel, can increase the area of contact of lubricating oil and pivot, when lubricating oil enters into the shaft sleeve inner chamber from the oil delivery hole, can flow into first subchannel and second subchannel, when the pivot rotates, lubricating oil in first subchannel and second subchannel can be evenly coated on the pivot outer wall with a brush, can make lubricating oil better form the protection oil film between pivot and shaft sleeve, be convenient for lubricate, through being equipped with oil return hole and oil storage chamber, can collect the oil mist that forms between pivot and the shaft sleeve, make the oil mist enter the oil storage chamber through the oil return hole, the waste of using lubricating oil is reduced, thereby reduce the cost of sewing machine, when realizing the lubricating oil recovery, can also avoid the oil mist that forms to splash to the casing all around and cause the head long-pending oil, through being equipped with radiating fin, can increase the area of contact of pivot and air, be convenient for to the pivot heat dissipation, effectively prolonged the life of axle sleeve with the pivot, can effectively solve the problem among the background art.

In order to solve the technical problem, the utility model provides a following technical scheme:

a lubricating device of a shaft sleeve for a sewing machine comprises the shaft sleeve, wherein an annular bulge is fixedly connected to the outer side of the shaft sleeve, an oil conveying hole is formed in the top of the shaft sleeve, a first branch flow passage and a second branch flow passage are formed in the inner wall of the shaft sleeve, the intersection end of the first branch flow passage and the second branch flow passage is communicated with the oil conveying hole, an oil return hole is formed in one end of the bottom of an inner cavity of the shaft sleeve, the bottom of the oil return hole is communicated with an oil storage cavity, the oil storage cavity is formed in the inner part of the shaft sleeve, a rotating shaft is sleeved in the inner cavity of the shaft sleeve, a sealing check ring is sleeved on the outer side of the shaft sleeve and is arranged on one side of the shaft sleeve, a radiating fin is arranged on one side of the sealing check ring and is uniformly arranged on the periphery of the rotating shaft, a, an oil return passage is formed in the bottom end of the inner cavity of the shell and penetrates through the bottom of the shaft sleeve to be communicated with the oil storage cavity.

Furthermore, one side of the annular bulge is fixedly connected with a positioning block, one side of the casing is provided with a limiting groove, and the limiting groove corresponds to the positioning block.

Further, an oil inlet pipe is fixedly connected to the top end of one side of the machine shell, and the oil inlet pipe is communicated with the oil transportation channel.

Furthermore, an oil return pipe is fixedly connected to the bottom end of one side of the machine shell and communicated with the oil return channel.

Further, a spiral lubricating oil groove is formed in the outer surface of the rotating shaft and is located in the inner cavity of the shaft sleeve.

Furthermore, chamfers are arranged at two ends of the shaft sleeve.

The utility model discloses beneficial effect: the utility model is provided with the first branch flow passage and the second branch flow passage, which can increase the contact area between the lubricating oil and the rotating shaft, when the lubricating oil enters the inner cavity of the shaft sleeve from the oil delivery hole, the lubricating oil can flow into the first branch flow passage and the second branch flow passage, when the rotating shaft rotates, the lubricating oil in the first branch flow passage and the second branch flow passage can be evenly coated on the outer wall of the rotating shaft, so that the lubricating oil can better form a protective oil film between the rotating shaft and the shaft sleeve, which is convenient for lubrication, by being provided with the oil return hole and the oil storage cavity, the oil mist formed between the rotating shaft and the shaft sleeve can be collected, the oil mist enters the oil storage cavity through the oil return hole, the waste of the use of the lubricating oil is reduced, thereby the use cost of the sewing machine is reduced, when the recovery of the lubricating oil is realized, the splashing of the head oil accumulation, the heat dissipation of the rotating shaft is facilitated, and the service life of the shaft sleeve and the service life of the rotating shaft are effectively prolonged.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a sectional view of the lubricating device of the shaft sleeve for the sewing machine of the present invention.

Fig. 2 is a top view of the lubricating device shaft sleeve of the shaft sleeve for the sewing machine of the present invention.

FIG. 3 is a view of the structure of the shaft of the lubricating device of the shaft sleeve for the sewing machine of the present invention.

Reference numbers in the figures: 1. a shaft sleeve; 2. an annular projection; 3. an oil transfer hole; 4. a first shunt passage; 5. a second branch flow channel; 6. an oil return hole; 7. an oil storage chamber; 8. a rotating shaft; 9. a sealing retainer ring; 10. a heat dissipating fin; 11. a housing; 12. an oil delivery passage; 13. an oil return passage; 14. positioning blocks; 15. an oil inlet pipe; 16. an oil return pipe; 17. a helical lubrication groove; 18. and (6) chamfering.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

As shown in fig. 1, a lubricating device for a shaft sleeve of a sewing machine comprises a shaft sleeve 1, an annular protrusion 2 is fixedly connected to the outer side of the shaft sleeve 1, an oil delivery hole 3 is formed in the top of the shaft sleeve 1, so that lubricating oil can be conveniently added into the inner cavity of the shaft sleeve 1, a first branched flow passage 4 and a second branched flow passage 5 are formed in the inner wall of the shaft sleeve 1, so that the contact area between the lubricating oil and a rotating shaft 8 can be increased, the lubricating oil can flow into the first branched flow passage 4 and the second branched flow passage 5 when entering the inner cavity of the shaft sleeve 1 from the oil delivery hole 3, the lubricating oil in the first branched flow passage 4 and the second branched flow passage 5 can be uniformly coated on the outer wall of the rotating shaft when the rotating shaft 8 rotates, so that the lubricating oil can form a protective oil film between the rotating shaft 8 and the shaft sleeve 1 better for lubrication, the intersection end of the first branched flow passage 4 and, the oil mist formed between the rotating shaft 8 and the shaft sleeve 1 can be collected, the oil mist can enter the oil storage cavity 7 through the oil return hole 6, the waste of the lubricating oil is reduced, the use cost of the sewing machine is reduced, the lubricating oil can be recovered, meanwhile, the formed oil mist can be prevented from splashing to the shell 1 to cause head oil accumulation, the bottom of the oil return hole 6 is communicated with the oil storage cavity 7 to store the recovered oil mist, the oil storage cavity 7 is arranged in the shaft sleeve 1, the rotating shaft 8 is sleeved in the inner cavity of the shaft sleeve 1, the sealing check ring 9 is sleeved outside the shaft sleeve 1 to prevent the lubricating oil from leaking, the sealing check ring 9 is arranged on one side of the shaft sleeve 1, the radiating fins 10 are arranged on one side of the sealing check ring 9 to increase the contact area between the rotating shaft 8 and the air, the radiating of the rotating shaft 8 is facilitated, the service lives of the shaft sleeve 1 and the rotating, the 1 outside cover of axle sleeve is equipped with casing 11, just casing 11 is located annular arch 2 one side, oil transportation passageway 12 has been seted up on casing 11 inner chamber top, just

oil transportation passageway

12 and 3 intercommunications in oil delivery hole, oil return passageway 13 has been seted up to casing 11 inner chamber bottom, just oil return passageway 13 run through axle sleeve 1 bottom with oil storage chamber 7 intercommunication.

More specifically, one side of the annular protrusion 2 is fixedly connected with a positioning block 14, one side of the housing 11 is provided with a limiting groove, the limiting groove corresponds to the positioning block 14, the positioning connection between the shaft sleeve 1 and the housing 11 is facilitated, the oil delivery passage 12 and the oil delivery hole 3 are prevented from being dislocated, the top end of one side of the housing 11 is fixedly connected with an oil inlet pipe 15 which can be connected with an oil pump assembly for providing lubricating oil, the oil inlet pipe 15 is communicated with the oil delivery passage 12, the bottom end of one side of the housing 11 is fixedly connected with an oil return pipe 16 which can be connected into the oil pump assembly for lubricating oil, the collected lubricating oil is convenient to recycle, the waste of the lubricating oil is reduced, the use cost of the sewing machine is reduced, the oil return pipe 16 is communicated with the oil return passage 13, the outer surface of the rotating shaft 8 is provided with a spiral lubricating, be convenient for lubricate, reduce the wearing and tearing between pivot 8 and the axle sleeve 1, effectively prolonged the life of axle sleeve 1 and pivot 8, just heliciform lubricant duct 17 is located the 1 inner chamber of axle sleeve, chamfer 18 has all been seted up at 1 both ends of axle sleeve.

The utility model discloses the theory of operation: when the sewing machine is used, lubricating oil flows into the first branch flow passage 4 and the second branch flow passage 5 when entering the inner cavity of the shaft sleeve 1 from the oil delivery hole 3, when the rotating shaft 8 rotates, the lubricating oil in the first branch flow passage 4 and the second branch flow passage 5 can be uniformly coated on the outer wall of the rotating shaft, so that the lubricating oil can better form a protective oil film between the rotating shaft 8 and the shaft sleeve 1 for facilitating lubrication, the oil return hole 6 can collect oil mist formed between the rotating shaft 8 and the shaft sleeve 1, so that the oil mist enters the oil storage cavity 7 through the oil return hole 6 and then is recycled into an oil pump assembly of the lubricating oil through the oil return channel 13 and the oil return pipe 16, the waste of the use of the lubricating oil is reduced, the use cost of the sewing machine is reduced, the formed oil mist can be prevented from splashing to the machine shell 1 to cause head oil accumulation when the rotating shaft 8 rotates, and meanwhile, the contact area of the rotating shaft 8, the heat dissipation of the rotating shaft 8 is facilitated, and the service life of the shaft sleeve 1 and the service life of the rotating shaft 8 are effectively prolonged.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a lubricating arrangement of axle sleeve for sewing machine, includes axle sleeve (1), its characterized in that: the oil conveying shaft is characterized in that an annular bulge (2) is fixedly connected to the outer side of the shaft sleeve (1), an oil conveying hole (3) is formed in the top of the shaft sleeve (1), a first branch flow passage (4) and a second branch flow passage (5) are formed in the inner wall of the shaft sleeve (1), the intersection end of the first branch flow passage (4) and the second branch flow passage (5) is communicated with the oil conveying hole (3), an oil return hole (6) is formed in one end of the bottom of an inner cavity of the shaft sleeve (1), an oil storage cavity (7) is communicated with the bottom of the oil return hole (6), the oil storage cavity (7) is formed in the inner portion of the shaft sleeve (1), a rotating shaft (8) is sleeved in the inner cavity of the shaft sleeve (1), a sealing check ring (9) is sleeved on the outer side of the shaft sleeve (1), the sealing check ring (9) is installed on one side of the shaft sleeve (, axle sleeve (1) outside cover is equipped with casing (11), just casing (11) are located annular arch (2) one side, oil transportation passageway (12) have been seted up on casing (11) inner chamber top, just oil transportation passageway (12) and oil transportation hole (3) intercommunication, oil return passageway (13) have been seted up to casing (11) inner chamber bottom, just oil return passageway (13) run through axle sleeve (1) bottom with oil storage chamber (7) intercommunication.

2. The lubrication device for a sleeve for a sewing machine according to claim 1, wherein: one side of the annular bulge (2) is fixedly connected with a positioning block (14), one side of the casing (11) is provided with a limiting groove, and the limiting groove corresponds to the positioning block (14).

3. The lubrication device for a sleeve for a sewing machine according to claim 1, wherein: the oil inlet pipe (15) is fixedly connected to the top end of one side of the machine shell (11), and the oil inlet pipe (15) is communicated with the oil transportation channel (12).

4. The lubrication device for a sleeve for a sewing machine according to claim 1, wherein: the bottom end of one side of the machine shell (11) is fixedly connected with an oil return pipe (16), and the oil return pipe (16) is communicated with an oil return channel (13).

5. The lubrication device for a sleeve for a sewing machine according to claim 1, wherein: spiral lubricating oil groove (17) have been seted up to pivot (8) surface, just spiral lubricating oil groove (17) are located axle sleeve (1) inner chamber.

6. The lubrication device for a sleeve for a sewing machine according to claim 1, wherein: chamfers (18) are arranged at two ends of the shaft sleeve (1).