Oil distributor of sewing machine

Abstract

The utility model provides an oil distributor of a sewing machine, and belongs to the technical field of sewing machines. The lubricating device solves the problem of how to ensure that the rotating shuttle is lubricated in place. The oil distributor of the sewing machine comprises a body, an oil inlet channel, an oil outlet channel and an oil return channel are formed in the body, an oil conveying channel communicated with the oil inlet channel and the oil return channel is further formed in the body, and an adjusting piece extending into the oil conveying channel is detachably connected into the body. And an oil passing gap which is communicated with the oil return channel and is adjustable in size is formed between the adjusting part and the inner wall of the oil conveying channel. The oil distributor of the sewing machine can ensure that the rotating shuttle is lubricated in place.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing machines and relates to an oil distributor for sewing machines. Background Art

[0002] The oil distributor, also known as the lubricating oil distributor, is an indispensable part of the lubrication system of the sewing machine. It mainly includes a body with an oil inlet channel, an oil outlet channel and an oil return channel, wherein the oil inlet channel is connected to the oil pump through an oil inlet pipe, one of the oil outlet channels supplies oil to the rotary hook through the oil outlet pipe, and the oil return channel is connected to the oil storage device of the sewing machine through the oil return pipe.

[0003] The sewing machine can drive the oil pump to work during operation. The oil pump pumps the lubricating oil from the oil storage device of the sewing machine from the oil inlet channel into the main body, and then the lubricating oil is divided into two parts. One part is supplied to the rotary hook through the oil outlet channel and the oil outlet pipe to ensure the lubrication effect of the rotary hook, and the other part of the lubricating oil flows back to the oil storage device through the oil return channel and the oil return pipe.

[0004] But in fact, as a sewing tool for cloth and clothing, the sewing machine has very high requirements for the lubrication of the shuttle. The above-mentioned distributor can only distribute the lubricating oil. During the operation, the shuttle will inevitably be not lubricated properly due to the working age of the machine and other external factors, which may cause the shuttle to lack oil and heat up, resulting in thread breakage. Therefore, the user needs to reconnect the wires before sewing can be carried out, which greatly affects the work efficiency. In addition, the sewn fabric may also have a high scrap rate due to the discontinuity of the stitches. Summary of the invention

[0005] The utility model aims at the above problems existing in the prior art and proposes an oil distributor for a sewing machine. The technical problem to be solved by the utility model is: how to ensure that the rotary hook is lubricated in place.

[0006] The purpose of the utility model can be achieved through the following technical solutions: an oil distributor for a sewing machine, comprising a main body with an oil inlet channel, an oil outlet channel and an oil return channel provided inside, characterized in that an oil delivery channel connected to the oil inlet channel and the oil return channel respectively is provided in the main body, an adjusting member extending into the oil delivery channel is detachably connected to the main body, and an oil gap connected to the oil return channel and having an adjustable size is formed between the adjusting member and the inner wall of the oil delivery channel.

[0007] The oil distributor of the sewing machine is connected to the oil pump through the oil inlet channel, supplies oil to the rotary hook through the oil outlet channel, and returns the excess lubricating oil to the oil storage device of the sewing machine through the oil return channel. The lubricating oil that has completed lubricating the rotary hook will also flow back to the oil storage device through a separately provided pipeline, thereby realizing the circulating supply and use of the lubricating oil. On this basis, the advantage of this case over the prior art is that the present application forms an oil gap in the oil delivery channel that is connected to the oil return channel by installing an adjusting member in the main body and cooperating the outer wall of the adjusting member with the inner wall of the oil delivery channel, and the oil gap becomes larger or smaller with the specific installation position of the adjusting member. Under the condition that the total oil output volume remains unchanged, if the size of the oil gap becomes larger, the amount of lubricating oil output through the oil return channel will increase, which will reduce the amount of lubricating oil output through the oil outlet channel. Conversely, when the size of the oil gap becomes smaller, the amount of lubricating oil output through the oil return channel will decrease, which will increase the amount of lubricating oil output through the oil outlet channel. Therefore, by adjusting the actual installation position of the adjusting part, the purpose of regulating the size of the oil gap according to actual needs is achieved, and then the amount of lubricating oil output through the oil outlet channel meets the current need of the sewing machine to lubricate the rotary hook, thereby ensuring the accurate supply of lubricating oil to the rotary hook.

[0008] In the above-mentioned oil distributor of the sewing machine, the main body is provided with a mounting channel connected to the oil delivery channel, the adjusting member is rod-shaped and has an adjusting portion with a tapered outer wall at one end, the adjusting member is threaded in the mounting channel, the adjusting portion extends into the oil delivery channel and forms the oil gap with the inner wall of the oil delivery channel, and the adjusting member is provided with a sealing ring that is tightly sealed with the inner wall of the mounting channel. The adjusting member and the mounting channel are threadedly matched, so that the tapered adjusting portion on the adjusting member extends into the oil delivery channel, so that the outer wall of the adjusting portion cooperates with the inner wall of the oil delivery channel to form an oil gap, and after the adjustment is completed, it can be ensured that the adjusting member remains in the current position without displacement, and at the same time, the sealing ring is used to block the adjusting member and the mounting channel to prevent the lubricating oil from leaking out through the mounting channel.

[0009] In the above-mentioned oil distributor for sewing machines, the main body is provided with a mounting channel connected to the oil delivery channel, the oil delivery channel is a tapered channel, the adjusting member is rod-shaped and screwed in the mounting channel, the adjusting member extends into the oil delivery channel and forms the oil gap with the inner wall of the oil delivery channel, and the adjusting member is provided with a sealing ring that is tightly sealed with the inner wall of the mounting channel. As an alternative, the oil delivery channel can be set to be tapered so that the long rod-shaped adjusting member is screwed with the mounting channel and extends into the oil delivery channel, thereby forming an oil gap between the outer wall of the end of the adjusting member and the inner wall of the oil delivery channel.

[0010] In the above-mentioned oil distributor for sewing machines, an installation groove is provided on the outer wall of the adjusting member along the circumferential direction, and the sealing ring is embedded and set in the installation groove, so as to ensure the installation stability of the sealing ring and avoid sealing failure between the adjusting member and the installation channel.

[0011] In the above-mentioned oil distributor for sewing machines, the outlet end of the oil delivery channel has a guide surface arranged downwardly from the outside to the inside, so as to guide the front end of the adjusting member to ensure that it can accurately extend into the oil delivery channel during the forward movement.

[0012] In the above-mentioned oil distributor of the sewing machine, the oil delivery channel is arranged vertically, the oil inlet channel and the oil outlet channel are located on both sides below the inlet end of the oil delivery channel, and a buffer cavity is provided in the body between the oil inlet channel and the oil outlet channel, which is directly opposite to the inlet end of the oil delivery channel. The center lines of the oil inlet channel and the oil outlet channel are made coaxial, and the two are connected through the oil delivery channel, so that the pressure loss can be minimized during the oil delivery process, and the smoothness of the lubricating oil outflow is ensured. In addition, the setting of the buffer cavity can also effectively smooth the oil pressure of the lubricating oil, and avoid the excessive flow rate of the lubricating oil during the output through the oil outlet channel.

[0013] Compared with the prior art, the oil distributor of the sewing machine has the following advantages:

[0014] By means of an adjusting member detachably connected in the body and extending into the oil delivery channel, an oil gap whose size can be adjusted according to actual oil delivery demand is formed at the outlet end of the oil delivery channel, and the amount of lubricating oil output through the oil outlet pipeline is controlled by changing the amount of lubricating oil input into the oil return channel, thereby ensuring that the rotary hook is properly lubricated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the oil distributor of this sewing machine.

[0016] Figure 2 It is a cross-sectional view of the oil distributor of the sewing machine and a partial enlarged view thereof.

[0017] Figure 3 It is a cross-sectional view of the body.

[0018] Figure 4 It is a structural diagram of the adjusting part.

[0019] In the figure, 1. main body; 11. oil inlet channel; 12. oil outlet channel; 13. oil return channel; 14. oil delivery channel; 141. guide surface; 15. installation channel; 16. buffer chamber; 2. adjusting part; 21. sealing ring; 22. installation groove; 23. adjusting part; 3. oil gap. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] Embodiment 1

[0022] like Figure 1-2 As shown, the oil distributor of the sewing machine includes a rectangular block-shaped body 1, and when a give way groove is opened on one side of the body 1, the body 1 is in an inverted L shape, an oil inlet channel 11 and an oil outlet channel 12 are opened in the body 1 near the bottom along the horizontal direction, and the center lines of the oil inlet channel 11 and the oil outlet channel 12 are coaxially arranged, and an oil return channel 13 is opened in the body 1 near the middle along the horizontal direction and is located directly above the oil inlet channel 11, and an oil delivery channel 14 is opened in the body 1 vertically, the inlet end of the oil delivery channel 14 is connected to the oil inlet channel 11, and the outlet end of the oil delivery channel 14 is connected to the oil return channel 13, and a mounting channel 15 is opened in the body 1 directly above the oil delivery channel 14 and passes through the outer wall of the body 1 vertically, and the center line of the mounting channel 15 is coaxially arranged with the center line of the oil delivery channel 14.

[0023] Combination Figure 4 , a long rod-shaped adjusting member 2 is screwed into the installation channel 15, which can be specifically a bolt, and the front end of the adjusting member 2 has a conical adjusting portion 23. When the user uses a screwdriver to cooperate with the slotted hole at the rear end of the adjusting member 2 so that the adjusting member 2 and the installation hole move forward in a threaded cooperation manner, the adjusting portion 23 extends into the oil delivery channel 14 so that an oil gap 3 connecting the oil return channel 13 is formed between the circumferential outer side wall of the adjusting portion 23 and the circumferential inner side wall of the outlet end of the oil delivery channel 14, and the oil delivery channel 14 is extended through the adjusting portion 23. The length of the outlet end can be adjusted according to the actual situation to achieve the size of the oil gap 3. A mounting groove 22 is circumferentially opened on the outer wall of the rear end of the adjusting member 2, and a sealing ring 21 is embedded in the mounting groove 22. After the adjusting member 2 is screwed into the mounting channel 15, the sealing ring 21 can always be pressed against the inner wall of the mounting channel 15, thereby sealing the gap between the adjusting member 2 and the mounting channel 15 to prevent the lubricating oil from leaking out from there between. In addition, the adjusting member 2 in the present application can also be replaced by a tapered rod-shaped pin.

[0024] like Figure 1 and Figure 2 As shown, a buffer chamber 16 is provided in the body 1 and between the oil inlet channel and the oil outlet channel 12. The buffer chamber 16 is directly opposite to the inlet end of the oil delivery channel 14. Figure 3 A guide surface 141 is provided in the body 1 and at the outlet end of the oil delivery channel 14 along its circumferential direction and is gradually inclined downward from the outside to the inside.

[0025] Working principle: Connectors are installed on the main body 1 corresponding to the oil inlet channel 11, the oil outlet channel 12 and the oil return channel 13, so that the oil inlet channel 11 is connected to the oil inlet pipe, the oil outlet channel 12 is connected to the oil return pipe and the oil return channel 13 is connected to the oil return pipe. During the oil supply process, the lubricating oil enters from the oil inlet channel 11, and after the lubricating oil enters the buffer for preliminary pressure reduction, it is diverted. Part of the lubricating oil is supplied to the outside through the oil outlet channel 12, and the other part of the lubricating oil is supplied to the outside through the oil delivery channel 14 and the oil return channel 13 in turn. In this process, the user screws the adjusting member 2 with a screwdriver to make the adjusting portion 23 extend into the outlet end of the oil delivery channel 14, so that the outlet of the oil delivery channel 14 An oil gap 3 is formed between the circumferential inner wall of the end and the circumferential outer wall of the adjusting portion 23, and as the user rotates the adjusting member 2 clockwise or counterclockwise, the length of the adjusting portion 23 extending into the oil delivery channel 14 is adjusted. When the front end of the adjusting member 2 extends longer, the oil gap 3 formed is smaller, and when the front end of the adjusting member 2 extends shorter, the oil gap 3 formed is larger. That is to say, when the oil gap 3 increases, the amount of lubricating oil output through the oil return channel 13 increases, and the amount of lubricating oil output through the oil outlet channel 12 decreases. Conversely, when the oil gap 3 decreases, the amount of lubricating oil output through the oil return channel 13 increases, and the amount of lubricating oil output through the oil outlet channel 12 decreases.

[0026] Embodiment 2

[0027] The specific structure of this embodiment is roughly the same as that of the first embodiment, except that the adjusting member 2 is a bolt or a threaded pin, and the oil delivery channel 14 is configured as a tapered channel, thereby forming an oil gap 3 of adjustable size through the cooperation between the outer wall of the adjusting member 2 and the inner wall of the oil delivery channel 14.

[0028] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0029] Although the terms such as body 1, oil inlet channel 11, oil outlet channel 12, oil return channel 13, oil delivery channel 14, guide surface 141, installation channel 15, buffer chamber 16, adjustment member 2, sealing ring 21, installation groove 22, adjustment part 23, oil gap 3 are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. An oil distributor for a sewing machine, comprising a body (1) having an oil inlet channel (11), an oil outlet channel (12) and an oil return channel (13) formed therein, characterized in that: The main body (1) is also provided with an oil delivery channel (14) which is respectively connected to the oil inlet channel (11) and the oil return channel (13); an adjusting member (2) which extends into the oil delivery channel (14) is detachably connected to the main body (1); and an oil gap (3) which is connected to the oil return channel (13) and has an adjustable size is formed between the adjusting member (2) and the inner wall of the oil delivery channel (14).

2. The oil distributor for a sewing machine according to claim 1, characterized in that: The main body (1) is provided with a mounting channel (15) connected to the oil delivery channel (14); the adjusting member (2) is rod-shaped and has an adjusting portion (23) with a conical outer wall at one end; the adjusting member (2) is screwed into the mounting channel (15); the adjusting portion (23) extends into the oil delivery channel (14) and forms the oil gap (3) with the inner wall of the oil delivery channel (14); and the adjusting member (2) is provided with a sealing ring (21) which is tightly sealed against the inner wall of the mounting channel (15).

3. The oil distributor for a sewing machine according to claim 1, characterized in that: The body (1) is provided with a mounting channel (15) connected to the oil delivery channel (14); the oil delivery channel (14) is a tapered channel; the adjusting member (2) is rod-shaped and is screwed into the mounting channel (15); the adjusting member (2) extends into the oil delivery channel (14) and forms the oil gap (3) with the inner wall of the oil delivery channel (14); the adjusting member (2) is provided with a sealing ring (21) which is tightly sealed against the inner wall of the mounting channel (15).

4. The oil distributor for a sewing machine according to claim 2 or 3, characterized in that: An installation groove (22) is provided on the outer side wall of the adjusting member (2) along the circumferential direction, and the sealing ring (21) is embedded and positioned in the installation groove (22).

5. The oil distributor for a sewing machine according to claim 2 or 3, characterized in that: The outlet end of the oil delivery channel (14) has a guide surface (141) which is arranged to be inclined downward from the outside to the inside.

6. The oil distributor for a sewing machine according to claim 5, characterized in that: The oil delivery channel (14) is arranged vertically, the oil inlet channel (11) and the oil outlet channel (12) are located on both sides below the inlet end of the oil delivery channel (14), and a buffer chamber (16) is provided in the body (1) between the oil inlet channel (11) and the oil outlet channel (12) and is directly opposite to the inlet end of the oil delivery channel (14).

Images