Oil supply structure of rotating shuttle and sewing machine

Abstract

The utility model relates to an oil supply structure of a rotating shuttle and a sewing machine. The oil box is used for storing oil; the oil pipe is used for conveying oil in the oil box to the rotating shuttle; the gas pipe is used for introducing gas into the oil box to increase the oil supply amount; an oil line penetrates through the oil pipe; the oil inlet end of the oil pipe extends into the oil box, the air outlet end of the air pipe extends into the oil box, and the oil line extends into the oil box along the oil pipe and extends to the bottom of the oil box. The oil supply structure of the rotating shuttle and the sewing machine have the advantages that compared with a traditional mode that oil is supplied only through an oil line, the air pipe is additionally arranged for air supply, air can be supplied into the oil box through the air pipe, pressure in the oil box is increased, the amount of oil entering the oil line can be increased, oil can be supplied to the rotating shuttle along the oil line, and the oil supply effect is improved. And part of the gas can move along the oil pipe to drive the oil in the oil pipe to move, so that the previous oil supply structure is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to an oil supply structure of a rotary hook and a sewing machine. Background Art

[0002] At present, in the sewing process, the rotary shuttle, as a core component, undertakes the most critical task of stitch formation. When the needle on the needle bar of the machine head drives the upper thread up and down once, the rotary shuttle on the base rotates two circles and hooks the upper thread on the needle, and at the same time drives the bottom thread and the upper thread in the shuttle case to form a thread loop, thereby forming a lock stitch on the sewing material. Such reciprocating motion drives the bottom and upper threads, and achieves the sewing process we want. This shows the importance of the rotary shuttle, and the rotary shuttle generally has to rotate at a speed of more than 5000 rpm during use.

[0003] In such a long-term high-speed operation, the hook parts need to be frequently supplied with oil for lubrication and cooling. In the prior art, there is a method of setting an oil pump to extract lubricating oil from the oil tank located at the base of the sewing machine for forced oil supply, or using the capillary phenomenon or surface tension between the oil tank and the oil supply point to supply oil to the oil supply point of the hook part, that is, through the oil core connection, the lubricating oil is transferred in the oil core, and the oil is supplied from the oil tank to the supply point. However, in actual use, the oil supply of these structures is insufficient. Utility Model Content

[0004] An object of the present application is to provide an oil supply structure for a rotary hook and a sewing machine, which can increase the oil supply amount to the rotary hook.

[0005] Another object of the present application is to provide an oil supply structure for a rotary hook and a sewing machine with a simple structure.

[0006] The technical solution adopted in the present application is: an oil supply structure for a rotary hook, comprising a frame;

[0007] An oil box, for storing oil;

[0008] An oil pipe, used to transport the oil in the oil box to the rotary hook;

[0009] The air pipe is used to pass the gas into the oil box to increase the oil supply;

[0010] An oil line is passed through the oil pipe; the oil inlet end of the oil pipe extends into the oil box, the air outlet end of the air pipe extends into the oil box, and the oil line extends along the oil pipe into the oil box and extends to the bottom of the oil box.

[0011] Compared with the prior art, the advantage of the present application is that compared with the traditional oil supply using only an oil line, the present structure adds an air pipe supply, and can supply air to the oil box through the air pipe, thereby increasing the pressure in the oil box and increasing the amount of oil entering the oil line, which is beneficial for the oil to supply oil to the rotary shuttle along the oil line, and part of the gas can move along the oil pipe, driving the oil in the oil pipe to move, thereby improving the previous oil supply structure.

[0012] In some embodiments of the present application, an oil pipe rubber plug is provided between the oil pipe and the oil box; an air pipe rubber plug is provided between the air pipe and the oil box.

[0013] Furthermore, the air pipe enters the oil box; one end of the oil pipe enters the oil box.

[0014] In some embodiments of the present application, the air outlet end of the air pipe faces the bottom surface of the oil box; the oil inlet end of the oil pipe extends to the bottom of the oil box, and the oil line extends outside the oil inlet end of the oil pipe.

[0015] In some embodiments of the present application, a throttle valve is also included, and the throttle valve sleeve is arranged on the oil pipe.

[0016] In some embodiments of the present application, a static oil sleeve of the rotary hook shaft is further included, and one end of the oil line away from the oil box is in the static oil sleeve of the rotary hook shaft.

[0017] In some embodiments of the present application, a first air pressure speed regulating valve is further included, and the first air pressure speed regulating valve is sleeved on the air pipe.

[0018] Furthermore, it also includes a second air pressure speed regulating valve, which is sleeved on the air pipe.

[0019] In some embodiments of the present application, a solenoid valve is also included, and the air inlet end of the air pipe is connected to the solenoid valve; the solenoid valve is connected and fixed to the frame.

[0020] In some embodiments of the present application, the oil box is connected to the frame via a clamp; a support plate is provided on the frame, and the support plate is arranged below the oil box and abuts against the bottom surface of the oil box.

[0021] In some embodiments of the present application, an observation cover is provided on the top surface of the oil box.

[0022] A sewing machine comprises the above-mentioned rotary hook oil supply structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the utility model embodiment 1 Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the utility model embodiment 1 Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the structure of the utility model embodiment 1 Figure 3 ;

[0026] Figure 4 It is a schematic diagram of the structure inside the oil box of Example 1 of the utility model;

[0027] Figure 5 It is a schematic diagram of the installation structure of the oil line on the rotary hook of Example 1 of the utility model.

[0028] In the figure: 1. frame; 2. oil box; 3. oil pipe; 4. air pipe; 5. oil line; 6. observation cover; 7. rubber plug of oil pipe; 8. rubber plug of air pipe; 9. throttle valve; 10. first air pressure speed regulating valve; 11. solenoid valve; 12. clamp; 13. support plate; 14. rotary hook; 15. second air pressure speed regulating valve; 16. static oil sleeve of rotary hook shaft. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0030] Embodiment 1:

[0031] This embodiment provides a rotary hook oil supply structure, such as Figure 1 , Figure 4 As shown, it includes a frame 1;

[0032] Oil box 2, used for storing oil;

[0033] The oil pipe 3 is used to transport the oil in the oil box 2 to the rotary hook;

[0034] The air pipe 4 is used to pass the gas into the oil box 2 to increase the oil supply;

[0035] An oil line 5 is passed through the oil pipe 3; the oil inlet end of the oil pipe 3 extends into the oil box 2, the air outlet end of the air pipe 4 extends into the oil box 2, and the oil line 5 extends along the oil pipe 3 into the oil box 2 and extends to the bottom of the oil box 2.

[0036] The oil outlet end of the oil pipe 3 is connected to the rotary shuttle 14, the other end of the oil line 5 extends along the oil pipe 3 and is connected to the rotary shuttle 14, and the air inlet end of the air pipe 4 is connected to the air source, and the air source adopts the air source originally used by the sewing machine, and no additional addition is required. Compared with the traditional oil supply using only the oil line 5, this structure adds the air supply of the air pipe 4, and can supply air to the oil box 2 through the air pipe 4, increasing the pressure in the oil box 2, and can increase the amount of oil entering the oil line 5, which is conducive to the oil supply to the rotary shuttle 14 along the oil line 5, and part of the gas can move along the oil pipe 3, driving the oil in the oil pipe 3 to move, improving the previous oil supply structure. The oil line 5 extends to the bottom of the oil box 5, and the area of ​​contact with the oil is large, which increases the oil absorption of the oil line 5. At the same time, when the oil amount is low, the oil line 5 can also contact the oil for oil supply.

[0037] For reliable use, an oil pipe rubber plug 7 is provided between the oil pipe 3 and the oil box 2. The design of the oil pipe rubber plug 7 ensures that the connection seal between the oil pipe 3 and the oil box 2 is reliable.

[0038] For reliable use, Figure 2 As shown, a rubber plug 8 is provided between the air pipe 4 and the oil box 2. The design of the rubber plug 8 ensures that the connection seal between the air pipe 4 and the oil box 2 is reliable.

[0039] For reliable use, the air pipe 4 enters from the side of the oil box 2 and is higher than the oil level in the oil box 2. The air pipe 4 enters from the side, which is convenient for connection and installation. If there is a gas leak, the gas will leak directly to the upper part, without affecting the oil in the lower part of the oil box 2, and the oil will not flow back into the air pipe 4.

[0040] For reliable use, the oil pipe 3 enters from the side of the oil box 2. The oil pipe 3 enters from the side to facilitate the outward transportation of oil.

[0041] For reliable use, the air outlet end of the air pipe 4 faces the bottom surface of the oil box 2; the oil inlet end of the oil pipe 3 extends to the bottom of the oil box 2, and the oil line 5 extends to the outside of the oil inlet end of the oil pipe 3. The air outlet end of the air pipe 4 faces the bottom surface of the oil box 2, and the air intake effect is better; the oil pipe 3 extends to the bottom of the oil box 2, which is more conducive to low-level oil intake, and part of the oil line 5 is outside the oil pipe 3, with a larger contact surface with the oil, which is more conducive to oil intake.

[0042] In order to facilitate the control of oil supply, a throttle valve 9 is also included, and the throttle valve 9 is sleeved on the oil pipe 3. In this embodiment, the throttle valve 9 is connected and fixed to the frame 1. The design of the throttle valve 9 can adjust the amount of oil supply.

[0043] In order to ensure reliable oil supply, Figure 5 As shown, it also includes a rotary hook shaft static oil sleeve 16, and the end of the oil line 5 away from the oil box 2 is in the rotary hook shaft static oil sleeve 16. The oil line 5 goes directly from the oil box 2 to the rotary hook shaft static oil sleeve 16, and the oil line 5 is a whole oil line.

[0044] In order to facilitate the control of air supply, a first air pressure speed regulating valve 10 is also included, and the first air pressure speed regulating valve 10 is sleeved on the air pipe 4. The design of the first air pressure speed regulating valve 10 can adjust the air volume, so as to actively control the oil volume and the time or interval of the oil supply from the oil box 2 to the rotary hook 14, thereby improving the previous oil supply structure.

[0045] In order to facilitate adjustment, a second air pressure speed regulating valve 15 is also included, and the second air pressure speed regulating valve 15 is sleeved on the air pipe 4. The second air pressure speed regulating valve 15 is arranged between the first air pressure speed regulating valve 10 and the oil box 2. Because the amount of oil is too sensitive to air pressure, the amount of oil is greatly affected by adjusting it only by the first air pressure speed regulating valve 10. The design of the second air pressure speed regulating valve 15 allows the first air pressure speed regulating valve 10 to be adjusted to the maximum value of the oil intake and keep the first air pressure speed regulating valve 10 no longer adjusted subsequently, so that the maximum value of the oil intake is limited to prevent the oil intake from exceeding the maximum value and affecting the normal oil supply. Then, the second air pressure speed regulating valve 15 is used for adjustment. At this time, further adjustment is made within the maximum oil intake to control the minimum oil intake to obtain the best oil intake. The overall control has higher precision and lower difficulty. The customer only needs to adjust the second air pressure speed regulating valve 15 to prevent the customer from mistakenly exceeding the maximum oil intake.

[0046] In order to ensure reliable air supply, a solenoid valve 11 is also included, and the air inlet end of the air pipe 4 is connected to the solenoid valve 11; the solenoid valve 11 is fixedly connected to the frame 1. This solenoid valve 11 can be newly added, or the original solenoid valve for blowing on the sewing machine can be shared, and only a three-way connector needs to be added. In this embodiment, a solenoid valve 11 is newly added.

[0047] For reliable installation, the oil box 2 is connected to the frame 1 through a clamp 12. The design of the clamp 12 makes the fixed connection of the oil box 2 simple and convenient.

[0048] For reliable installation, Figure 3 As shown, a support plate 13 is provided on the frame 1, and the support plate 13 is arranged below the oil box 2 and abuts against the bottom surface of the oil box 2. The design of the support plate 13 has good support for the oil box 2 and can prevent the oil box 2 from falling.

[0049] For convenient observation, an observation cover 6 is provided on the top surface of the oil box 2. The design of the observation cover 6 can be used to observe the oil volume and working conditions in the oil box 2, and can also be used to add oil.

[0050] Embodiment 2:

[0051] The present embodiment provides a sewing machine, comprising the oil supply structure of the rotary hook described in the first embodiment.

[0052] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An oil supply structure for a rotary hook, characterized in that: include Rack (1); An oil box (2), used for storing oil; An oil pipe (3) for conveying the oil in the oil box (2) to the rotary hook; An air pipe (4) is used to pass air into the oil box (2) to increase the oil supply; An oil line (5) is inserted into the oil pipe (3); the oil inlet end of the oil pipe (3) extends into the oil box (2), the air outlet end of the air pipe (4) extends into the oil box (2), and the oil line (5) extends along the oil pipe (3) into the oil box (2) and extends to the bottom of the oil box (2).

2. The oil supply structure of a rotary hook according to claim 1, characterized in that: An oil pipe rubber plug (7) is provided between the oil pipe (3) and the oil box (2); an air pipe rubber plug (8) is provided between the air pipe (4) and the oil box (2); the air pipe (4) enters the oil box (2); and one end of the oil pipe (3) enters the oil box (2).

3. The oil supply structure of a rotary hook according to claim 1 is characterized in that: The air outlet end of the air pipe (4) faces the bottom surface of the oil box (2); the oil inlet end of the oil pipe (3) extends to the bottom of the oil box (2), and the oil line (5) extends to the outside of the oil inlet end of the oil pipe (3).

4. The oil supply structure of a rotary hook according to claim 1, characterized in that: It also includes a throttle valve (9) which is sleeved on the oil pipe (3); and a rotary hook shaft static oil sleeve (16), wherein one end of the oil line (5) away from the oil box (2) is in the rotary hook shaft static oil sleeve (16).

5. The oil supply structure of a rotary hook according to claim 1 is characterized in that: It also comprises a first air pressure speed regulating valve (10), which is sleeved on the air pipe (4).

6. The oil supply structure of a rotary hook according to claim 5, characterized in that: It also comprises a second air pressure speed regulating valve (15), which is sleeved on the air pipe (4).

7. The oil supply structure of a rotary hook according to claim 1, characterized in that: It also includes a solenoid valve (11), and the air inlet end of the air pipe (4) is connected to the solenoid valve (11); the solenoid valve (11) is connected and fixed to the frame (1).

8. The oil supply structure of a rotary hook according to claim 1, characterized in that: The oil box (2) is connected to the frame (1) via a clamp (12); a support plate (13) is provided on the frame (1), and the support plate (13) is arranged below the oil box (2) and abuts against the bottom surface of the oil box (2).

9. The oil supply structure of a rotary hook according to claim 1, characterized in that: An observation cover (6) is provided on the top surface of the oil box (2).

10. A sewing machine, characterized in that: The invention comprises an oil supply structure for a rotary hook as claimed in any one of claims 1 to 9.

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