阅读说明：本技术 缝纫机的供油结构及供油方法 (Oil supply structure and method for sewing machine ) 是由 张国平 王卉 吴斌 于 2021-07-26 设计创作，主要内容包括：本发明涉及缝纫机的供油结构及供油方法,其供油结构包括油箱、进油管路、输油管路、油芯、回油管路、机油中转平台,机油中转平台上表面与油箱的壁面形成机油中转区,机油中转区具有与油箱下部相连通的自流通道,油芯的吸油端部自由下垂地浸设在机油中转区内的机油中,吸油端部浸设在机油中的高度为h3,吸油端部外径为d,其中0.2d≤h3≤0.5d。本发明不仅能够在机油的流动中实施油芯的供油,确保润滑油起到良好的润滑效果,而且一旦停止供油后,油芯的吸油端部会含有少量或不含机油,因此,油芯不会持续供油,也避免机油外泄造成缝料品质破坏,同时也避免了机油的浪费,而且也方便实施缝纫机下次工作时的供油。(The invention relates to an oil supply structure and an oil supply method of a sewing machine, wherein the oil supply structure comprises an oil tank, an oil inlet pipeline, an oil core, an oil return pipeline and an engine oil transfer platform, wherein an engine oil transfer area is formed by the upper surface of the engine oil transfer platform and the wall surface of the oil tank, the engine oil transfer area is provided with a self-flowing channel communicated with the lower part of the oil tank, the oil absorption end part of the oil core is freely and drooping and dipped in engine oil in the engine oil transfer area, the height of the oil absorption end part dipped in the engine oil is h3, the outer diameter of the oil absorption end part is d, and h3 is more than or equal to 0.2d and less than or equal to 0.5 d. The invention can not only supply oil to the oil core in the flowing of the engine oil to ensure that the lubricating oil has good lubricating effect, but also ensure that the oil-absorbing end part of the oil core contains little or no engine oil once the oil supply is stopped, so the oil core can not supply oil continuously, the damage to the quality of sewing materials caused by the leakage of the engine oil is avoided, the waste of the engine oil is avoided, and the oil supply of the sewing machine in the next working is conveniently carried out.)

1. The utility model provides a sewing machine's fuel feeding structure, its includes the oil tank, advances oil pipe way, defeated oil pipe way, and wick, its characterized in that: the oil supply structure further comprises an oil return pipeline communicated with the oil tank and an engine oil transfer platform arranged above the oil level of the oil tank, the upper surface of the engine oil transfer platform and the wall surface of the oil tank form an engine oil transfer area, the engine oil transfer area is provided with a self-flowing channel communicated with the lower part of the oil tank, the oil absorption end part of the oil core is freely and drooping and immersed in the engine oil transfer area, the height of the oil absorption end part immersed in the engine oil is h3, the outer diameter of the oil absorption end part is d, and h3 is not less than 0.2d and not more than 0.5 d.

2. The oil supply structure of the sewing machine according to claim 1, wherein: the oil inlet pipeline is positioned above the engine oil transfer platform, and the connectors of the self-flow channel and the oil inlet pipeline are positioned on two opposite sides of the oil tank.

3. The oil supply structure of the sewing machine according to claim 2, wherein: the distance from the upper surface of the engine oil transfer platform to the oil liquid level is h1, the distance from the connector of the oil inlet pipeline to the upper surface of the engine oil transfer platform is h2, and h2 is more than or equal to 0.3h1 and less than or equal to 0.8h 1.

4. The oil supply structure of the sewing machine according to claim 1, wherein: the upper surface of the engine oil transfer platform is horizontally arranged, or the upper surface of the engine oil transfer platform is arranged in a mode that the gravity flow channel is laterally inclined.

5. The oil supply structure of the sewing machine according to claim 3, wherein: the upper surface of the engine oil transfer platform inclines upwards from the side where the gravity flow channel is located by an angle of 1-5 degrees.

6. The oil supply structure of the sewing machine according to claim 1, wherein: the oil return pipeline is positioned below the oil liquid level, and the oil return pipeline is communicated with the oil inlet pipeline through a circulating pipeline and a circulating pump.

7. The oil supply structure of the sewing machine according to claim 6, wherein: the oil return pipeline and the oil inlet pipeline are positioned on the same side.

8. The oil supply structure of the sewing machine according to claim 1, wherein: the oil inlet pipeline comprises an oil inlet pipe and an oil inlet nozzle which communicates the oil inlet pipe with the oil tank; the oil return pipeline comprises an oil return pipe and an oil return nozzle which communicates the oil return pipe with the oil tank.

9. An oil supply method of a sewing machine is characterized in that: the oil supply method adopts the oil supply structure of the sewing machine of any one of claims 1 to 8, and comprises the following steps:

s1, supplying oil to the engine oil transfer area through an oil inlet pipeline, wherein part of the engine oil absorbs oil through the oil core and is delivered to an oil-requiring mechanical assembly through an oil delivery pipeline to implement motion lubrication;

and S2, allowing part of the engine oil in the engine oil transfer area to flow into a lower oil tank from the self-flow channel, and controlling the liquid level of the engine oil in the oil tank by a return pipeline.

10. The oil supplying method of a sewing machine according to claim 9, characterized in that: the oil supply method further comprises a step S3, wherein a return pipeline is in circulating communication with the oil inlet pipeline, in oil-way circulating oil supply, the oil discharge amount from the self-flow channel is w1, the oil return amount of the oil return pipeline is w2, and the oil absorption amount of the oil core is w3, wherein w1+ w3= w 2.

Technical Field

The invention belongs to the field of sewing machines, and particularly relates to an oil supply structure of a sewing machine and an oil supply method of the sewing machine.

Background

The sewing machine is a machine which uses one or more sewing threads to form one or more stitches on a sewing material to enable one or more layers of the sewing material to be interwoven or sewn.

Currently, an existing oil supply structure includes an oil tank, an oil inlet pipeline communicated with the oil tank, an oil delivery pipeline, and an oil core disposed in the oil delivery pipeline, wherein the oil core is immersed in engine oil in the oil tank from one end portion, and the other end portion is butted with an oil-requiring component.

However, in practical use, there are the following drawbacks:

1. because the sewing machine oil has certain viscosity and can be deposited at the bottom of the oil tank, the quality of the supplied machine oil is difficult to ensure, the required lubricating effect cannot be achieved, and the sewing machine can be damaged after long-term use;

2. no matter the sewing machine is in any state, the oil core is always in an oil absorption mode, at the moment, the sucked oil is easy to gather and drip on a sewing operation table, so that sewing materials or leather materials are polluted, the quality of a sewing product is influenced, and meanwhile, the waste of engine oil is caused.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defects of the prior art and provide an improved oil supply structure of a sewing machine.

Meanwhile, the invention also relates to an oil supply method of the sewing machine.

In order to solve the technical problems, the invention adopts the following technical scheme:

the oil supply structure of the sewing machine comprises an oil tank, an oil inlet pipeline, an oil conveying pipeline and an oil core, and further comprises an oil return pipeline communicated with the oil tank and an engine oil transfer platform arranged above the oil level of the oil tank, wherein an engine oil transfer area is formed by the upper surface of the engine oil transfer platform and the wall surface of the oil tank, the engine oil transfer area is provided with a self-flowing channel communicated with the lower part of the oil tank, the oil absorption end part of the oil core is freely and drooping and immersed in the engine oil transfer area, the height of the immersed oil absorption end part in the engine oil is h3, the outer diameter of the oil absorption end part is d, and h3 is not less than 0.2d and not more than 0.5 d.

Preferably, the oil inlet pipeline is positioned above the engine oil transfer platform, and the connectors of the self-flow channel and the oil inlet pipeline are positioned on two opposite sides of the oil tank. The length of the flow path of the engine oil on the engine oil transfer platform is prolonged, and the existence time of the engine oil on the engine oil transfer platform is ensured, so that the engine oil can be conveniently sucked by an oil conveying pipeline.

Specifically, the distance from the upper surface of the engine oil transfer platform to the oil liquid level is h1, the distance from the connector of the oil inlet pipeline to the upper surface of the engine oil transfer platform is h2, and the distance is not less than 0.3h1 and not more than h2 and not more than 0.8h 1. Set up like this, reduce the length of oil core, guarantee that oil core can stably last the oil absorption, improve fuel feeding quality.

According to a specific embodiment and a preferable aspect of the present invention, the upper surface of the oil transfer platform is disposed horizontally, or the upper surface of the oil transfer platform is disposed to be inclined upward from the side where the gravity flow passage is located.

Specifically, the angle of the upper surface of the engine oil transfer platform inclining upwards from the side where the self-flowing channel is located is 1-5 degrees. By the arrangement, when the sewing machine stops working, all the engine oil on the engine oil transfer platform can be completely drained, and the oil delivery pipeline can stop supplying the oil.

Preferably, the oil conveying pipeline is positioned on a tank cover of the oil tank, and the oil suction end part of the oil core is arranged in a freely-drooping mode. Set up like this, the oil core can be from tip suction engine oil for the fuel feeding process is mild stable, guarantees the lubricated effect of sewing machine work position.

According to a further embodiment and preferred aspect of the present invention, the oil return line is located below the oil level and is in communication with the oil inlet line. The oil tank, the oil return pipeline and the oil inlet pipeline can form a circulating oil path, so that the flowability of the engine oil is improved, the engine oil is prevented from being deposited, and the lubricating effect of the engine oil is ensured.

Specifically, the oil return pipeline and the oil inlet pipeline are located on the same side. Thus, the installation and the arrangement of the oil supply structure are convenient.

In addition, the oil inlet pipeline comprises an oil inlet pipe and an oil inlet nozzle which communicates the oil inlet pipe with the oil tank; the oil return pipeline comprises an oil return pipe and an oil return nozzle which is communicated with the oil tank.

The other technical scheme of the invention is as follows: an oil supply method of a sewing machine adopts the oil supply structure of the sewing machine and comprises the following steps:

s1, supplying oil to the engine oil transfer area through an oil inlet pipeline, wherein part of the engine oil absorbs oil through the oil core and is delivered to an oil-requiring mechanical assembly through an oil delivery pipeline to implement motion lubrication;

and S2, allowing part of the engine oil in the engine oil transfer area to flow into a lower oil tank from the self-flow channel, and controlling the liquid level of the engine oil in the oil tank by a return pipeline.

Preferably, the oil supply method further includes step S3, in which the return line is in circulating communication with the oil inlet line, and in the oil-circulating oil supply, the oil discharge amount from the gravity flow channel is w1, the oil return amount of the oil return line is w2, and the oil absorption amount of the oil core is w3, where w1+ w3= w 2.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

the invention can not only supply oil to the oil core in the flowing of the engine oil to ensure that the lubricating oil has good lubricating effect, but also ensure that the oil-absorbing end part of the oil core contains little or no engine oil once the oil supply is stopped, so the oil core can not supply oil continuously, the damage to the quality of sewing materials caused by the leakage of the engine oil is avoided, the waste of the engine oil is avoided, and the oil supply of the sewing machine in the next working is conveniently carried out.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic half-sectional view of an oil supply structure of a sewing machine according to the present invention;

FIG. 2 is a schematic half-sectional view of an oil supply structure of the sewing machine according to the present invention (an oil inlet pipe is communicated with an oil return pipe);

wherein: 1. an oil tank; 10. a tank body; 11. a box cover; 110. a sealing plug; 12. the box bottom;

2. an engine oil transfer platform; 20. an engine oil transfer zone; 200. a self-flowing channel;

3. an oil inlet pipeline; 30. an oil inlet pipe; 31. an oil inlet nozzle;

4. an oil return line; 40. an oil return pipe; 41. an oil return nozzle;

5. an oil pipeline;

6. an oil core;

7. a circulation line;

8. an oil transfer pump.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1, the present embodiment relates to an oil supply structure of a sewing machine, which includes an oil tank 1, an engine oil transfer platform 2, an oil inlet pipeline 3, an oil return pipeline 4, an oil delivery pipeline 5, and an oil core 6.

Specifically, the oil tank 1 includes a tank body 10, a tank cover 11 disposed on the top of the tank body 10, and a tank bottom 12 disposed on the bottom of the tank body 10, wherein the oil inlet pipeline 3 and the oil return pipeline 4 are respectively communicated with the tank body 10.

The machine oil transfer platform 2 is arranged above the oil level in the oil tank 1, wherein the upper surface of the machine oil transfer platform 2 is horizontally arranged, and the upper surface of the machine oil transfer platform 2 and the wall surface of the tank body 10 form a machine oil transfer area 20.

Meanwhile, the oil transition region 20 has a self-flow passage 200 communicating with the lower portion of the tank body 10. The machine oil can flow down from the gravity flow channel 200 after falling on the upper surface of the machine oil transfer platform 2, the fluidity is kept, the machine oil is prevented from being deposited, and the lubricating effect of the machine oil is ensured.

In this embodiment, the oil inlet pipeline 3 is located above the engine oil transfer platform 2, and the joints between the gravity flow channel 200 and the oil inlet pipeline 3 are located on two opposite sides of the tank body 10. The length of the flow path of the engine oil on the engine oil transfer platform is prolonged, and the existence time of the engine oil on the engine oil transfer platform is ensured, so that the engine oil can be conveniently sucked by an oil conveying pipeline.

Specifically, the distance from the upper surface of the oil transfer platform 2 to the oil liquid level is h1, and the distance from the port of the oil inlet pipeline 3 to the upper surface of the oil transfer platform 2 is h2, where h2=0.5h 1. Set up like this, reduce the length of oil core, guarantee that oil core can stably last the oil absorption, improve fuel feeding quality.

For convenience of implementation, the oil inlet pipeline 3 includes an oil inlet pipe 30 and an oil inlet nozzle 31 for communicating the oil inlet pipe 30 with the oil tank 1.

In this embodiment, the oil return line 4 is located below the oil level in the oil tank 1, and the oil return line 4 and the oil inlet line 3 are located on the same side. Thus, the installation and the arrangement of the oil supply structure are convenient.

Referring to fig. 2, the present embodiment further includes a circulation line 7, and the oil return line 4 is communicated with the oil inlet line 3 through the circulation line 7. The oil tank, the oil return pipeline and the oil inlet pipeline can form a circulating oil path, so that the flowability of the engine oil is improved, the engine oil is prevented from being deposited, and the lubricating effect of the engine oil is ensured.

Meanwhile, the present embodiment further includes an oil transfer pump 8 intercepting the oil disposed on the circulation line 7.

Specifically, the oil return pipeline 4 includes an oil return pipe 40 and an oil return nozzle 41 for communicating the oil return pipe 40 with the oil tank 1.

In this embodiment, a sealing plug 110 is disposed on the case cover 11, the oil delivery pipe 5 passes through the sealing plug 110 and is disposed in communication with the inner cavity of the oil tank 1, and the oil suction end of the oil core 6 hangs down freely and is immersed in the engine oil transit area 20. Set up like this, the oil core can be from tip suction engine oil for the fuel feeding process is mild stable, guarantees the lubricated effect of sewing machine work position.

Specifically, the oil absorption end of the oil core 6 is immersed in the engine oil to a height h3, and the oil absorption end of the oil core 6 has an outer diameter d, where h3=0.3 d. Set up like this, the oil core can keep the stable controllable state of oil absorption, guarantees fuel feeding quality.

In summary, the oil supply method of the sewing machine of the embodiment includes the following steps:

s1, supplying oil to the engine oil transfer area through an oil inlet pipeline, wherein part of the engine oil absorbs oil through the oil core and is delivered to an oil-requiring mechanical assembly through an oil delivery pipeline to implement motion lubrication;

s2, allowing part of the engine oil in the engine oil transfer area to flow into a lower oil tank from the self-flow channel, and controlling the liquid level of the engine oil in the oil tank by a return pipeline;

and S3, the return pipeline is communicated with the oil inlet pipeline in a circulating mode, in the oil-way circulating oil supply process, the oil discharge amount of the self-flow channel is w1, the oil return amount of the oil return pipeline is w2, and the oil absorption amount of the oil core is w3, wherein w1+ w3= w 2.

Therefore, the present embodiment has the following advantages:

1. through the engine oil transfer platform arranged above the oil surface in the oil tank, the engine oil can flow through the engine oil transfer platform and then fall down, so that the oil conveying pipeline can continuously and stably absorb and supply oil in the working state of the sewing machine;

2. when the sewing machine is idle for a long time, the oil transfer platform is free of oil, so that the oil delivery pipeline can stop supplying oil, and the situations that sewing materials, leather and the like are polluted by the sewing machine oil are effectively avoided;

3. the waste of engine oil is effectively avoided, and the production cost is reduced;

4. simple and reliable structure and convenient use.

The present invention has been described in detail above, but the present invention is not limited to the above-described embodiments. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.