CN219653276U

CN219653276U - Sewing machine

Info

Publication number: CN219653276U
Application number: CN202321241009.2U
Authority: CN
Inventors: 黄玉敏; 陈栩华; 郭超恒
Original assignee: Zhongjie Sewing Machine Co Ltd
Current assignee: Zhongjie Sewing Machine Co Ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-09-08
Anticipated expiration: 2033-05-18

Abstract

The utility model provides a sewing machine, which comprises a machine head assembly and a lubrication assembly, wherein the machine head assembly comprises a needle bar part, a rotating shuttle part and a transmission gear, the needle bar part is movably arranged along the vertical direction, the transmission gear is connected with the rotating shuttle part, and the rotating shuttle part is driven to rotate through the transmission gear; the lubrication assembly comprises an oil separator, a first oil supply part and a second oil supply part, wherein the oil separator is provided with a first oil outlet and a second oil outlet, the oil inlet end of the first oil supply part is communicated with the first oil outlet, the oil outlet end of the first oil supply part is opposite to the transmission gear, the oil inlet end of the second oil supply part is communicated with the second oil outlet, and the oil outlet end of the second oil supply part is contacted with the needle bar part. The lubricating oil is respectively conveyed to the first oil supply part and the second oil supply part by arranging an oil separator; spraying lubricating oil on the transmission gear through the first oil supply part; by arranging the second oil supply part to coat the lubricating oil on the needle bar part, the problem of insufficient lubrication of all parts of the sewing machine head in the prior art is solved.

Description

Sewing machine

Technical Field

The utility model relates to the technical field of sewing machines, in particular to a sewing machine.

Background

The head of a sewing machine is generally composed of a number of moving parts, with the need to reduce friction and wear between these parts by lubrication. In general, a sewing machine head is lubricated by a lubricating oil through a wick, but such a lubrication method has the following drawbacks:

1. not suitable for high speed operation: if the handpiece lubrication is inadequate or uneven, the transport quality and speed may be reduced.

2. Frequent maintenance is required: lubrication of the sewing machine head is required before each use and requires periodic cleaning and replacement of the lubricating oil, increasing operating costs and time, possibly resulting in production stoppage.

3. Oil pollution to the environment: the lubricating oil of the machine head can drip to form a layer of film in a working area, so that the appearance is influenced, and the health of staff can be endangered.

4. The safety risk is large: if maintenance is not performed or the aged component is replaced for a long period of time, there is a risk of failure.

Disclosure of Invention

The utility model mainly aims to provide a sewing machine, which solves the problem that in the prior art, each part of a sewing machine head is insufficiently lubricated.

In order to achieve the above object, the present utility model provides a sewing machine comprising: the machine head assembly comprises a needle rod part, a rotating shuttle part and a transmission gear; wherein the needle bar part is movably arranged along the vertical direction; the transmission gear is connected with the rotating shuttle part and drives the rotating shuttle part to rotate through the transmission gear; the lubrication assembly comprises an oil separator, a first oil supply part and a second oil supply part; the oil distributor is provided with a first oil outlet and a second oil outlet, the oil inlet end of the first oil supply part is communicated with the first oil outlet, and the oil outlet end of the first oil supply part is opposite to the transmission gear so as to spray lubricating oil on the transmission gear; the oil inlet end of the second oil supply part is communicated with the second oil outlet, and the oil outlet end of the second oil supply part is contacted with the needle bar part so as to coat lubricating oil on the needle bar part.

Further, the handpiece assembly further includes a first receiving cavity for receiving the drive gear; the first oil supply portion includes: the oil collector is provided with a first oil spraying pipeline, the oil inlet end of the first oil spraying pipeline is communicated with the first oil outlet, and the oil outlet end of the first oil spraying pipeline stretches into the first accommodating cavity so as to spray lubricating oil on the transmission gear; the first adjusting part is arranged in the first oil spraying pipeline at least partially, and the first adjusting part is movably arranged along the radial direction of the first oil spraying pipeline so as to block and/or avoid at least part of lubricating oil and adjust the oil quantity of the lubricating oil sprayed out of the first oil spraying pipeline.

Further, the lateral wall of first oil pipe way is provided with first hole of dodging, and first hole of dodging has the internal thread, and first adjusting part includes: the first adjusting screw at least partially extends into the first oil spraying pipeline through the first avoiding hole and is in threaded connection with the first avoiding hole, and the length of the first adjusting screw inserted into the first oil spraying pipeline is adjusted by screwing the first adjusting screw so as to block or avoid at least part of lubricating oil in the first oil spraying pipeline.

Further, the rotating shuttle part comprises a left rotating shuttle part and a right rotating shuttle part, the transmission gear comprises a left transmission gear and a right transmission gear, the left rotating shuttle part is in driving connection with the left transmission gear, and the right rotating shuttle part is in driving connection with the right transmission gear; the oil separator is provided with two first oil outlets, and the number of the first oil supply parts is two; the two first oil outlets are respectively communicated with oil inlet ends of the two first oil supply parts, wherein the oil outlet end of one first oil supply part of the two first oil supply parts is opposite to the left transmission gear so as to spray oil on the left transmission gear; the oil outlet end of the other one of the two first oil supply parts is opposite to the right transmission gear so as to spray oil on the right transmission gear.

Further, the oil separator includes: the first oil outlet is arranged on the first oil outlet channel, the oil outlet end of the first oil outlet channel is communicated with the oil inlet end of the first oil supply part, and the side wall of the first oil outlet channel is provided with a second avoiding hole; the second adjusting part at least partially stretches into the first oil outlet channel through the second avoidance hole, and the second adjusting part is movably arranged along the radial direction of the first oil outlet channel so as to block and/or avoid at least part of lubricating oil and adjust the oil outlet quantity of the first oil outlet channel.

Further, the needle rod part comprises a needle rod and a needle, the needle is arranged on the needle rod, and a first oil feeding line is wound on the needle rod; the second oil supply portion includes: the upper oil tank is provided with a first oil storage cavity, and the oil inlet end of the first oil storage cavity is communicated with the second oil outlet; one end of the first oil feeding line, which is far away from the needle bar, is immersed in the lubricating oil in the first oil storage cavity so as to coat the lubricating oil on the needle bar part through the first oil feeding line.

Further, the sewing machine further includes: the first end of the first connecting pipeline is communicated with the second oil outlet, and the second end of the first connecting pipeline is communicated with the oil inlet end of the first oil storage cavity so as to convey lubricating oil to the upper oil tank from the oil distributor through the first connecting pipeline; the one-way valve is arranged on the first connecting pipeline and is communicated with the first connecting pipeline.

Further, the oil separator also comprises an oil inlet; the lubrication assembly further includes: the oil storage box is provided with an oil storage cavity for storing lubricating oil; the oil inlet end of the first driving pump is communicated with the oil storage cavity, and the oil outlet end of the first driving pump is communicated with the oil inlet so as to convey lubricating oil in the oil storage cavity to the oil distributor through the first driving pump.

Further, the lubrication assembly further includes: and the oil filter is arranged between the oil storage tank and the first driving pump, and the lubricating oil in the oil storage tank flows through the oil filter and is conveyed into the first driving pump.

Further, the machine head assembly comprises a machine needle driving motor and a second accommodating cavity for accommodating the machine needle driving motor; the lubrication assembly further includes: the oil inlet end of the oil spraying groove is communicated with the second oil outlet, and the oil spraying groove is provided with a second oil spraying pipeline and a third oil outlet; the second oil spraying pipeline is communicated with the second accommodating cavity so as to spray lubricating oil on the driving motor through the second oil spraying pipeline; the third oil outlet is communicated with the oil inlet end of the second oil supply part so as to convey lubricating oil to the second oil supply part through the third oil outlet; the sewing machine further includes: and the observation window is covered above the oil spraying groove so as to observe the content of lubricating oil in the oil spraying groove through the observation window.

By applying the technical scheme of the utility model, the sewing machine comprises a machine head assembly and a lubrication assembly, wherein the machine head assembly comprises a needle bar part, a rotating shuttle part and a transmission gear, the needle bar part is movably arranged along the vertical direction, the transmission gear is connected with the rotating shuttle part, and the rotating shuttle part is driven to rotate through the transmission gear; the lubrication assembly comprises an oil separator, a first oil supply part and a second oil supply part, wherein the oil separator is provided with a first oil outlet and a second oil outlet, the oil inlet end of the first oil supply part is communicated with the first oil outlet, the oil outlet end of the first oil supply part is opposite to the transmission gear, the oil inlet end of the second oil supply part is communicated with the second oil outlet, and the oil outlet end of the second oil supply part is contacted with the needle bar part. The lubricating oil is respectively conveyed to the first oil supply part and the second oil supply part by arranging an oil separator; spraying lubricating oil on the transmission gear through the first oil supply part; by arranging the second oil supply part to coat the lubricating oil on the needle bar part, the problem of insufficient lubrication of all parts of the sewing machine head in the prior art is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 shows a schematic structural view of a lubrication assembly of a sewing machine according to the present utility model;

fig. 2 shows a schematic structural view of a head assembly of a sewing machine according to the present utility model.

Wherein the above figures include the following reference numerals:

1. a handpiece assembly; 2. a lubrication assembly; 21. an oil separator; 211. a second adjusting member; 22. a first oil supply part; 221. an oil collector; 222. a first adjusting member; 23. a second oil supply part; 231. an oil tank is arranged; 24. a first drive pump; 25. an oil filter; 26. an oil jet tank; 3. a frame assembly; 4. a one-way valve; 5. an observation window; 6. a first connecting line; 7. a second connecting pipeline; 8. a third connecting pipeline; 9. a fourth connecting line; 10. a fifth connecting line; 11. a sixth connecting line; 12. a first connection loop; 13. a second connection loop; 14. and a third connection loop.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Referring to fig. 1 and 2, the present utility model provides a sewing machine, comprising a head assembly 1, wherein the head assembly 1 comprises a needle bar part, a rotating shuttle part and a transmission gear; wherein, in order to send the suture to the waiting to make things, the needle bar part is movably arranged along the vertical direction; in order to hook the suture sent out by the needle rod part, the transmission gear is connected with the rotating shuttle part, and the rotating shuttle part is driven to rotate through the transmission gear, so that the suture is hooked in the rotating process through a rotating shuttle point arranged on the rotating shuttle part.

For lubricating the parts in the head assembly 1, the sewing machine further comprises a lubrication assembly 2, wherein the lubrication assembly 2 comprises an oil separator 21, a first oil supply part 22 and a second oil supply part 23; the oil separator 21 is provided with a first oil outlet and a second oil outlet, the oil inlet end of the first oil supply part 22 is communicated with the first oil outlet, and the oil outlet end of the first oil supply part 22 is opposite to the transmission gear so as to spray lubricating oil on the transmission gear, thereby lubricating the transmission gear and the rotating shuttle part; the oil inlet end of the second oil supply part 23 is communicated with the second oil outlet, and the oil outlet end of the second oil supply part 23 is contacted with the needle bar part to coat lubricating oil on the needle bar part, so that the needle bar part is lubricated.

The sewing machine comprises a machine head assembly and a lubrication assembly, wherein the machine head assembly comprises a needle bar part, a rotating shuttle part and a transmission gear; the lubrication assembly includes an oil separator, a first oil supply portion, and a second oil supply portion. The lubricating oil is respectively conveyed to the first oil supply part and the second oil supply part by arranging an oil separator; spraying lubricating oil on the transmission gear through the first oil supply part; by arranging the second oil supply part to coat the lubricating oil on the needle bar part, the problem of insufficient lubrication of all parts of the sewing machine head in the prior art is solved.

Further, the handpiece assembly 1 further includes a first accommodation chamber for accommodating a transmission gear rotatably provided therein; for lubrication of the transmission gear, the first oil supply part 22 includes an oil collector 221, the oil collector 221 has a first oil spraying pipeline, an oil inlet end of the first oil spraying pipeline is communicated with the first oil outlet, and an oil outlet end of the first oil spraying pipeline extends into the first accommodating cavity to spray lubricating oil onto the transmission gear.

Specifically, the oil spout of first oil pipe way sprays the lubricating oil on drive gear, and drive gear is at pivoted in-process with the lubricating oil splash at first holding intracavity to evenly and fully lubricate drive gear, cool down drive gear when providing lubrication to drive gear, thereby promote the wear resistance of gear, adapt to abominable operating mode, promote sewing machine's the use duration.

Further, in order to lubricate the rotating shuttle part, the rotating shuttle part comprises a rotating rod and a rotating shuttle, one end of the rotating rod stretches into the first accommodating cavity and is in driving connection with the transmission gear, and the other end of the rotating rod is fixedly connected with the rotating shuttle so as to drive the rotating rod to drive the rotating shuttle to rotate through the transmission gear. The rotating rod is wound with a second oil feeding line, one end, far away from the rotating shuttle, of the second oil feeding line is soaked in the lubricating oil in the first containing cavity, and the lubricating oil is coated on the rotating shuttle part through the second oil feeding line, so that micro-oil lubrication of the rotating shuttle part is realized by coating the lubricating oil on the rotating shuttle part to form a layer of oil film, excessive lubricating oil is prevented from dripping onto materials to be sewn in the process of lubricating the rotating shuttle part, and the materials to be sewn are kept clean and tidy.

In addition, the first oil supply portion 22 further includes a first adjusting component 222, at least a portion of the first adjusting component 222 is disposed in the first oil injection pipeline, and the first adjusting component 222 is movably disposed along a radial direction of the first oil injection pipeline to block and/or avoid at least a portion of the lubricating oil, so as to adjust an oil amount of the lubricating oil sprayed out of the first oil injection pipeline, improve an oil amount adjusting precision, and ensure requirements of different working conditions.

Preferably, as shown in fig. 1, a first avoidance hole is formed on the side wall of the first oil injection pipeline in the embodiment, and the first avoidance hole is provided with internal threads; in order to adjust the oil quantity of the lubricating oil sprayed out of the first oil spraying pipeline, the first adjusting component 222 comprises a first adjusting screw, at least part of the first adjusting screw extends into the first oil spraying pipeline through a first avoiding hole and is in threaded connection with the first avoiding hole, the length of the first adjusting screw inserted into the first oil spraying pipeline is adjusted by screwing the first adjusting screw so as to block or avoid the lubricating oil in the first oil spraying pipeline, so that the oil quantity passing through the first oil spraying pipeline is controlled, and the oil quantity of the lubricating oil conveyed to the transmission gear by the first oil supply part 22 is adjusted.

Further, as shown in fig. 1, since the rotating shuttle part in the present embodiment includes a left rotating shuttle part and a right rotating shuttle part, the transmission gear includes a left transmission gear and a right transmission gear, the left rotating shuttle part is in driving connection with the left transmission gear, and the right rotating shuttle part is in driving connection with the right transmission gear, so as to improve the production efficiency of the sewing machine; the oil separator 21 has two first oil outlets, and the number of first oil supply portions 22 is two.

The two first oil outlet branches are communicated with oil inlet ends of the two first oil supply parts 22, wherein the oil outlet end of one first oil supply part 22 of the two first oil supply parts 22 is opposite to the left transmission gear so as to spray oil on the left transmission gear, and the left transmission gear is lubricated by the first oil supply part 22; the oil outlet end of the other first oil supply part 22 of the two first oil supply parts 22 is opposite to the right transmission gear so as to spray oil on the right transmission gear, so that the right transmission gear is lubricated through the second first oil supply part 22, the two first oil supply parts 22 can lubricate the left and right gears at the same time, and the lubrication efficiency is improved.

Specifically, in order to convey the lubricating oil from the oil separator 21 to the first oil supply portion 22, the sewing machine includes a fourth connecting pipe 9, the oil separator 21 includes a first oil outlet passage, an oil inlet end of the first oil outlet passage communicates with the first oil outlet, and an oil outlet end of the first oil outlet passage communicates with an oil inlet end of the first oil supply portion 22 through the fourth connecting pipe 9, so that the lubricating oil is conveyed from the oil separator 21 to the first oil supply portion 22 through the fourth connecting pipe 9.

In addition, the oil separator 21 further includes a second adjusting component 211, at least part of the second adjusting component 211 is disposed in the first oil outlet channel, and the second adjusting component 211 is movably disposed along the radial direction of the first oil outlet channel, so as to block and/or avoid at least part of the lubricating oil, so as to adjust the oil quantity of the lubricating oil output by the first oil outlet channel, improve the accuracy of oil quantity adjustment, and ensure the requirements of different working conditions.

Preferably, as shown in fig. 1, a second avoidance hole is formed on the side wall of the first oil outlet channel in the embodiment, and the second avoidance hole has an internal thread; in order to adjust the oil quantity of the lubricating oil output by the first oil outlet channel, the second adjusting component 211 comprises a second adjusting screw, at least part of the second adjusting screw extends into the first oil outlet channel through a second avoiding hole and is in threaded connection with the second avoiding hole, the length of the second adjusting screw inserted into the first oil outlet channel is adjusted by screwing the second adjusting screw, so that the lubricating oil in the first oil outlet channel is blocked or avoided, the oil passing quantity of the first oil outlet channel is controlled, and the oil quantity of the lubricating oil conveyed by the oil distributor 21 to the first oil supply part 22 is adjusted.

Further, in order to lubricate the needle bar portion, the needle bar portion includes a needle bar and a needle, and the needle is disposed on the needle bar to drive the needle to perform a movement in a vertical direction through the needle bar. The needle bar is wound with a first oil feeding line; the second oil supply part 23 comprises an upper oil tank 231, the upper oil tank 231 is provided with a first oil storage cavity, and the oil inlet end of the first oil storage cavity is communicated with the second oil outlet; one end of the first oil feeding line, which is far away from the needle bar, is immersed in the lubricating oil in the first oil storage cavity so as to coat the lubricating oil on the needle bar portion through the first oil feeding line, thereby realizing micro-oil lubrication of the needle bar portion by coating the lubricating oil on the needle bar portion to form a layer of oil film, preventing excessive lubricating oil from causing dripping to the material to be sewn in the process of lubricating the needle bar portion, and further keeping the material to be sewn clean and tidy.

Specifically, the second oil supply portion 23 in the present embodiment is embodied as:

in order to convey the lubricating oil from the oil separator 21 to the second oil supply portion 23, the sewing machine further includes a first connecting pipe 6, a first end of the first connecting pipe 6 communicates with the second oil outlet, and a second end of the first connecting pipe 6 communicates with an oil inlet end of the first oil storage chamber to convey the lubricating oil from the oil separator 21 to the oil feed tank 231 through the first connecting pipe 6. Preferably, the sewing machine further comprises a one-way valve 4, wherein the one-way valve 4 is arranged on the first connecting pipeline 6 and is communicated with the first connecting pipeline 6 so as to control lubricating oil to flow unidirectionally in the first connecting pipeline 6, prevent the lubricating oil from flowing reversely and ensure the smoothness of low-rotation-speed oil supply.

In another implementation, as shown in fig. 2, in order to drive the needle bar to move in the vertical direction, the handpiece assembly 1 includes a needle driving motor and a second accommodating cavity for accommodating the needle driving motor; because at job site, sewing machine needs continuous operation for the driving motor that drives needle shank motion needs continuous operation, thereby makes driving motor's temperature can continuously rise, and then need cool down driving motor, sewing machine still includes first connecting line 6, fifth connecting line 10 and sixth connecting line 11, and lubrication assembly 2 still includes oil spout groove 26, and oil feed end of oil spout groove 26 communicates with the second oil-out through first connecting line 6, and oil spout groove 26 has second oil spout pipeline and third oil-out.

The second oil spraying pipeline is communicated with the second accommodating cavity, so that lubricating oil is sprayed on the driving motor through the second oil spraying pipeline, the driving motor is cooled while being lubricated by the lubricating oil, the driving motor is prevented from being damaged due to continuous temperature rise in the running process, and the service life of the driving motor is prolonged; the third oil outlet is communicated with the oil inlet end of the second oil supply part 23 through the fifth connecting pipeline 10 so as to convey lubricating oil to the second oil supply part 23 through the third oil outlet, the second oil supply part 23 conveys lubricating oil to the needle bar part through the sixth connecting pipeline 11 so that the lubricating oil flows from the second oil outlet of the oil separator 21 to the second oil supply part 23 through the third oil outlet of the oil injection groove 26 after flowing through the first connecting pipeline 6 and the oil injection groove 26, and then flows to the needle bar part through the sixth connecting pipeline 11 so as to lubricate the needle bar part.

Preferably, in order to facilitate timely observation of whether sufficient lubricating oil exists in the oil spraying groove 26, the sewing machine further comprises an observation window 5, the observation window 5 is mounted on the outer shell of the machine head assembly and is covered above the oil spraying groove 26, the oil inlet end of the oil spraying groove 26 sprays lubricating oil into the cavity of the oil spraying groove 26 during oil inlet, so that the oil inlet end of the oil spraying groove 26 is observed through the observation window 5 to continuously have lubricating oil input, and the lubricating oil content in the oil spraying groove 26 is monitored, so that the lubricating oil content in the oil spraying groove 26 is timely adjusted, and workers are reminded of timely adding lubricating oil.

Further, in order to supply oil to the oil separator 21, the sewing machine further includes a second connecting line 7 and a third connecting line 8, and the oil separator 21 further includes an oil inlet; the lubrication assembly 2 in this embodiment further includes an oil storage tank having an oil storage chamber for storing lubricating oil, and a first drive pump 24; the oil inlet end of the first driving pump 24 is communicated with the oil storage cavity through the second connecting pipeline 7, and the oil outlet end of the first driving pump 24 is communicated with the oil inlet through the third connecting pipeline 8 so as to convey lubricating oil in the oil storage cavity to the oil separator 21 through the first driving pump 24.

Specifically, in order to form a loop, the sewing machine further comprises a first connecting loop 12, a second connecting loop 13 and a third connecting loop 14, wherein two ends of the first connecting loop 12 are respectively communicated with the oil injection groove 26 and the oil storage box, the aperture of the first connecting loop 12 is smaller than the aperture of an oil inlet of the oil injection groove 26 and smaller than the aperture of a second oil injection pipeline and the aperture of a third oil outlet, so that lubricating oil in the oil injection groove 26 can flow back to the oil storage box in a small flow mode, and oil accumulation in the oil injection groove 26 is prevented; two ends of the second connecting loop 13 are respectively communicated with the second accommodating cavity and the oil storage box so that redundant lubricating oil in the second accommodating cavity can flow back to the oil storage box; both ends of the third connecting loop 14 are respectively communicated with the upper oil tank 231 and the oil storage tank, so that lubricating oil in the upper oil tank 231 can flow back to the oil storage tank for cyclic utilization, and waste is reduced.

In addition, in order to ensure the cleanliness of the lubricating oil, the lubricating assembly 2 further includes an oil filter 25 before the lubricating oil is delivered to the oil separator 21, the oil filter 25 is disposed between the oil storage tank and the first drive pump 24, the lubricating oil in the oil storage tank is delivered to the first drive pump 24 after flowing through the oil filter 25, and impurities in the lubricating oil are filtered by the oil filter 25, so that the lubricating oil in the oil storage tank is delivered to the first drive pump 24 after being filtered.

Specifically, the sewing machine in the present embodiment includes a frame assembly 3, the frame assembly 3 including a work table on which the head assembly 1 is mounted; the lubrication assembly 2 is mounted on a table and is connected to the head assembly 1.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects:

the sewing machine comprises a machine head assembly 1 and a lubrication assembly 2, wherein the machine head assembly 1 comprises a needle bar part, a rotating shuttle part and a transmission gear, the needle bar part is movably arranged along the vertical direction, the transmission gear is connected with the rotating shuttle part, and the rotating shuttle part is driven to rotate through the transmission gear; the lubrication assembly 2 comprises an oil separator 21, a first oil supply part 22 and a second oil supply part 23, wherein the oil separator 21 is provided with a first oil outlet and a second oil outlet, the oil inlet end of the first oil supply part 22 is communicated with the first oil outlet, the oil outlet end of the first oil supply part 22 is opposite to the transmission gear, the oil inlet end of the second oil supply part 23 is communicated with the second oil outlet, and the oil outlet end of the second oil supply part 23 is contacted with the needle bar part. The lubricant is delivered to the first and second lubricant supply portions 22 and 23 by providing the lubricant separator 21; spraying the lubricant oil on the transmission gear by providing the first oil supply portion 22; by arranging the second oil supply part 23 to coat the lubricating oil on the needle bar part, the problem of insufficient lubrication of each part of the sewing machine head in the prior art is solved, the working efficiency is improved, and the working cost is reduced.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A sewing machine, comprising:

the machine head assembly (1) comprises a needle rod part, a rotating shuttle part and a transmission gear;

wherein the needle bar portion is movably disposed in a vertical direction; the transmission gear is connected with the rotating shuttle part and drives the rotating shuttle part to rotate through the transmission gear;

a lubrication assembly (2) comprising an oil separator (21), a first oil supply portion (22) and a second oil supply portion (23);

the oil distributor (21) is provided with a first oil outlet and a second oil outlet, the oil inlet end of the first oil supply part (22) is communicated with the first oil outlet, and the oil outlet end of the first oil supply part (22) is opposite to the transmission gear so as to spray lubricating oil on the transmission gear;

the oil inlet end of the second oil supply part (23) is communicated with the second oil outlet, and the oil outlet end of the second oil supply part (23) is contacted with the needle bar part so as to coat lubricating oil on the needle bar part.

2. The sewing machine of claim 1, wherein the head assembly (1) further comprises a first housing chamber for housing the transmission gear;

the first oil supply unit (22) includes:

an oil collector (221) provided with a first oil spraying pipeline, wherein the oil inlet end of the first oil spraying pipeline is communicated with the first oil outlet, and the oil outlet end of the first oil spraying pipeline extends into the first accommodating cavity so as to spray lubricating oil on the transmission gear;

and the first adjusting part (222) is at least partially arranged in the first oil spraying pipeline, and the first adjusting part is movably arranged along the radial direction of the first oil spraying pipeline so as to block and/or avoid at least part of lubricating oil and adjust the oil quantity of the lubricating oil sprayed by the first oil spraying pipeline.

3. The sewing machine of claim 2, wherein a sidewall of the first oil injection conduit is provided with a first relief hole having internal threads, the first adjustment member (222) comprising:

the first adjusting screw at least partially extends into the first oil spraying pipeline through the first avoiding hole and is in threaded connection with the first avoiding hole, and the length of the first adjusting screw inserted into the first oil spraying pipeline is adjusted by screwing the first adjusting screw so as to block or avoid at least part of lubricating oil in the first oil spraying pipeline.

4. The sewing machine of claim 1, wherein the rotating shuttle portion comprises a left rotating shuttle portion and a right rotating shuttle portion, the drive gear comprises a left drive gear and a right drive gear, the left rotating shuttle portion is drivingly connected to the left drive gear, and the right rotating shuttle portion is drivingly connected to the right drive gear; the oil separator (21) is provided with two first oil outlets, and the number of the first oil supply parts (22) is two;

the two first oil outlets are respectively communicated with oil inlet ends of the two first oil supply parts (22), wherein the oil outlet end of one first oil supply part (22) in the two first oil supply parts (22) is opposite to the left transmission gear so as to spray oil onto the left transmission gear; the oil outlet end of the other first oil supply part (22) of the two first oil supply parts (22) is opposite to the right transmission gear so as to spray oil onto the right transmission gear.

5. The sewing machine of claim 1, wherein the oil separator (21) comprises:

the first oil outlet is arranged on the first oil outlet channel, the oil outlet end of the first oil outlet channel is communicated with the oil inlet end of the first oil supply part (22), and a second avoidance hole is formed in the side wall of the first oil outlet channel;

the second adjusting part (211), at least part of second adjusting part (211) is through the hole is dodged to the second dodge stretches into in the first oil outlet channel, the second adjusting part is followed the radial direction of first oil outlet channel is movably set up, in order to block and/or dodge at least partial lubricating oil, in order to adjust the play oil volume of first oil outlet channel.

6. The sewing machine of claim 1, wherein the needle bar portion comprises a needle bar and a needle, the needle is disposed on the needle bar, and a first oil feed line is wound on the needle bar;

the second oil supply section (23) includes:

an upper oil tank (231) provided with a first oil storage cavity, wherein the oil inlet end of the first oil storage cavity is communicated with the second oil outlet; one end of the first oil feeding line, which is far away from the needle bar, is soaked in the lubricating oil in the first oil storage cavity so as to coat the lubricating oil on the needle bar part through the first oil feeding line.

7. The sewing machine of claim 6, further comprising:

a first connecting pipeline (6), wherein a first end of the first connecting pipeline (6) is communicated with the second oil outlet, and a second end of the first connecting pipeline (6) is communicated with an oil inlet end of the first oil storage cavity so as to convey lubricating oil to the oil feeding tank (231) from the oil separator (21) through the first connecting pipeline (6);

the one-way valve (4) is arranged on the first connecting pipeline (6) and is communicated with the first connecting pipeline (6).

8. The sewing machine of claim 1, wherein the oil separator (21) further comprises an oil inlet;

the lubrication assembly (2) further comprises:

the oil storage box is provided with an oil storage cavity for storing lubricating oil;

the oil inlet end of the first driving pump (24) is communicated with the oil storage cavity, and the oil outlet end of the first driving pump (24) is communicated with the oil inlet so as to convey lubricating oil in the oil storage cavity to the oil separator (21) through the first driving pump (24).

9. The sewing machine of claim 8, wherein the lubrication assembly (2) further comprises:

and an oil filter (25), wherein the oil filter (25) is arranged between the oil storage tank and the first drive pump (24), and the lubricating oil in the oil storage tank flows through the oil filter (25) and is then conveyed into the first drive pump (24).

10. The sewing machine of claim 1, wherein the head assembly (1) comprises a needle drive motor and a second housing chamber for housing the needle drive motor; the lubrication assembly (2) further comprises:

the oil inlet end of the oil injection groove (26) is communicated with the second oil outlet, and the oil injection groove (26) is provided with a second oil injection pipeline and a third oil outlet;

the second oil spraying pipeline is communicated with the second accommodating cavity so as to spray lubricating oil on the driving motor through the second oil spraying pipeline; the third oil outlet is communicated with the oil inlet end of the second oil supply part (23) so as to convey lubricating oil to the second oil supply part (23) through the third oil outlet;

the sewing machine further includes:

and the observation window (5) is covered above the oil injection groove (26) so as to observe the content of the lubricating oil in the oil injection groove (26) through the observation window (5).