Heat dissipation mechanism of oil disc in sewing machine and sewing machine
By setting up internal cooling components and electronically controlled cooling fans in the sewing machine oil pan, and using the thin-diameter heat dissipation pipe to exchange heat with lubricating oil, the problem of poor heat dissipation of the oil pan is solved, and efficient heat dissipation and structural simplification are achieved.
Patent Information
- Application Number
- CN202422410810.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The existing sewing machine oil pans have poor heat dissipation effects, which affects the accuracy and durability of mechanical components, and additional fan arrangements will complicate the structure.
An internal cooling component is set up in the sewing machine oil pan, and an electrically controlled cooling fan and air intake passage are used to exchange heat with lubricating oil through a thin-diameter heat dissipation pipe to increase the heat exchange area, and a curved and inclined heat dissipation pipe design is used to improve heat dissipation efficiency.
It effectively improves the heat dissipation efficiency of lubricant, simplifies the structure, reduces the demand for additional parts, reduces the cost of modification, and achieves uniform cooling.
Smart Images
Figure CN223281031U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewing equipment, in particular to a heat dissipation mechanism of an oil pan in a sewing machine, and the sewing machine. Background Art
[0002] In the field of sewing machinery, overlock machines are important industrial equipment, and their continuous and stable operation depends on the efficient heat dissipation mechanism of key moving parts. At present, important moving parts of overlock machines, such as the main shaft and needle bar, will generate a lot of heat during high-speed operation. If this heat cannot be effectively dissipated, it will directly affect the precision, durability and overall performance of the mechanical parts, and even cause overheating failures, resulting in production line shutdowns. Traditional heat dissipation methods mainly rely on lubricating oil systems, that is, while the moving parts are lubricated by lubricating oil, the flow of lubricating oil is used to carry away and disperse the heat. The lubricating oil is finally collected in the oil pan and cooled by natural air cooling. See the attached Figure 1 As shown, the oil pan is generally fixed on the lower side of the sewing machine casing. Although blowing air outside the oil pan by means of a fan can accelerate heat dissipation to a certain extent, the cooling effect is still limited due to the large thickness of the oil pan. Furthermore, since the sewing machine has many structures, adding an additional fan would make the structure more complicated and not conducive to a compact layout. Utility Model Content
[0003] In view of the shortcomings of the prior art described above, the technical problem to be solved by the present invention is to provide a heat dissipation mechanism for the oil pan in a sewing machine, and a sewing machine, which can increase heat exchange inside the oil pan, have a good cooling effect, and use the existing structure in the sewing machine for ventilation, with a simple structure and small modifications.
[0004] To achieve the above-mentioned purpose, the present invention provides a heat dissipation mechanism for an oil pan in a sewing machine, wherein the sewing machine is provided with an electronic control module and an electronically controlled cooling fan for blowing air to the electronic control module for heat dissipation, the electronic control module includes an electronic control cover seat located at the oil pan, the oil pan is provided with an oil cavity for accommodating lubricating oil, the heat dissipation mechanism includes an internal cooling component located in the oil cavity, an air intake cavity opened on the oil pan, and an air intake channel provided in the electronic control cover seat, the internal cooling component includes a plurality of heat dissipation pipes, the thickness of the heat dissipation pipes is 0.2 to 2.0 mm, the first port of the heat dissipation pipe is connected to the air intake cavity, and the second port is connected to the external environment of the oil pan; the air intake cavity is connected to the air outlet port of the air intake channel, the air intake port of the air intake channel faces the electronically controlled cooling fan, and the electronically controlled cooling fan can blow air to the air intake port of the air intake channel when working.
[0005] Furthermore, both ends of the heat dissipation pipe are connected to the side wall of the oil chamber through a connecting structure, and the connecting structure includes a sealing gasket, a nut, a connecting pipe, a rubber tube and a clamp. The connecting pipe passes through the side wall of the oil chamber, and a limiting ring for abutting against the inner wall of the oil chamber is provided on the connecting pipe. The sealing gasket is arranged between the limiting ring and the inner wall of the oil chamber. The nut is threaded on the connecting pipe and pressed against the outside of the side wall of the oil chamber. The rubber tube is sleeved on the connecting pipe, and the port of the heat dissipation pipe is sleeved on the rubber tube. The clamp clamps the heat dissipation pipe to the connecting pipe.
[0006] Furthermore, both ends of the heat dissipation pipe are provided with a reducing section with a gradually shrinking inner diameter, and the port pipe diameter is the smallest.
[0007] Furthermore, the internal cooling component includes a heat dissipation pipe, and the heat dissipation pipe is bent and arranged in the oil pan.
[0008] Furthermore, the heat dissipation pipe includes a plurality of straight pipe sections and a curved pipe connecting section connecting two straight pipe sections. The straight pipe sections are arranged obliquely in the oil pan, and the first port and the second port are located at different heights of the oil pan.
[0009] Furthermore, the internal cooling component includes a plurality of heat dissipation pipes, and the heat dissipation pipes are straight pipes.
[0010] Furthermore, heat dissipation pipes are provided at a plurality of different positions in the height direction of the oil pan.
[0011] Furthermore, the straight pipe section is arranged obliquely in the oil pan, and the first port and the second port are positioned at different heights relative to the oil pan.
[0012] The utility model also provides a sewing machine, including an electric control module, an electric control cooling fan and an oil pan, wherein the electric control module includes an electric control cover seat and the above-mentioned heat dissipation mechanism.
[0013] As described above, the heat dissipation mechanism and sewing machine of the present invention have the following beneficial effects:
[0014] By setting up an internal cooling component and utilizing the heat dissipation pipe to exchange heat with the lubricating oil in the oil pan, the heat exchange area of the lubricating oil can be greatly increased, and the wall thickness of the heat dissipation pipe is much smaller than the wall thickness of the oil pan. Compared with the existing air cooling method outside the oil pan, the cooling effect can be effectively improved. At the same time, the electrically controlled heat dissipation fan, the air inlet channel in the electrically controlled cover seat and the air inlet cavity in the oil pan are used to introduce flowing air into the heat dissipation pipe. There is no need to additionally set up fans and other parts. Modifications can be made to the existing parts without affecting the existing layout. The modification is small, and the structure is simple, easy to use and low cost.
[0015] 2. The cooling pipe is set in a curved and inclined manner or in a multi-layer manner in the oil pan, which can evenly cool the lubricating oil at different height layers, and the lubricating oil can be in a turbulent state, thereby improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the installation of the oil pan, the electronically controlled cooling fan and the electronically controlled housing seat in the present invention.
[0017] Figure 2 for Figure 1 side view.
[0018] Figure 3 for Figure 2 AA section view in.
[0019] Figure 4 It is a structural schematic diagram of the heat dissipation pipe and the air intake cavity in the heat dissipation mechanism of the present utility model.
[0020] Figure 5 It is a structural schematic diagram of the heat dissipation pipe and the air intake cavity in the heat dissipation mechanism of the present utility model.
[0021] Figure 6 for Figure 5 Enlarged view of circle B in .
[0022] Explanation of Figure Numbers
[0023] 1. Chassis
[0024] 2 Electric control cover
[0025] 3 electronically controlled cooling fans
[0026] 4 oil pan
[0027] 41 oil chamber
[0028] 5 heat pipes
[0029] 51 straight pipe section
[0030] 52 elbow connection section
[0031] 6 Intake duct
[0032] 7 Intake cavity
[0033] 8 Connection structure
[0034] 81 connecting pipe
[0035] 82 Nut
[0036] 83 Sealing gasket
[0037] 84 clamp DETAILED DESCRIPTION
[0038] The following describes the implementation of the present invention through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.
[0039] It should be noted that the structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology, and are not used to limit the conditions for the implementation of this utility model. Therefore, they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this utility model without affecting the efficacy and purpose of the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", etc. quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of this utility model without substantially changing the technical content.
[0040] See also Figures 1 to 6 The utility model provides a heat dissipation mechanism for the oil pan in a sewing machine. The sewing machine is provided with an electric control module and an electric control heat dissipation fan 3 for blowing air to the electric control module for heat dissipation. Figure 1 The electronic control module includes an electronic control housing base 2 located near the oil pan 4. This base is mounted on one side of the housing 1 and adjacent to the oil pan 4. This base is used to house other components of the electronic control module. The oil pan 4 contains an oil chamber 41 for lubricating oil. An electronically controlled cooling fan 3 is typically mounted on the sewing machine's main shaft, blowing air toward the housing base 2 as it rotates. This structure is a common design used in sewing machines.
[0041] The heat dissipation mechanism of the present invention includes an internal cooling assembly located within an oil chamber 41, an air intake chamber 7 defined within an oil pan 4, and an air intake passage 6 disposed within an electrically controlled housing 2. The internal cooling assembly includes a plurality of heat dissipation tubes 5, each having a thickness ranging from 0.2 to 2.0 mm, preferably 0.5 mm. The first end of each heat dissipation tube 5 communicates with the air intake chamber 7, and the second end communicates with the external environment of the oil pan 4, allowing free air flow through the second end. The air intake chamber 7 is connected to the outlet end of the air intake passage 6, which faces the electrically controlled heat dissipation fan 3. When the electrically controlled heat dissipation fan 3 is in operation, air can be blown into the air intake end of the air intake passage 6.
[0042] The main working principle of the heat dissipation mechanism of the present invention is as follows: when the sewing machine is working, the electric control heat dissipation fan 3 rotates to blow air to the electric control module for heat dissipation, and at the same time, the wind will enter from the air inlet port of the air inlet channel 6 in the electric control cover seat 2. Except for the two ports, the rest of the air inlet channel 6 is preferably sealed (some parts are also allowed to be unsealed), so that the wind can enter the air inlet cavity 7 from the air outlet port of the air inlet channel 6, and then enter from the first port of the heat dissipation pipe 5 and exit from the second port, and heat exchange is carried out with the lubricating oil in the oil pan 4 through the heat dissipation pipe 5. The wall thickness of the heat dissipation pipe 5 is 0.2~2.0mm, which is much smaller than the wall thickness of the oil pan 41 (generally 10mm), and is made of a material with good thermal conductivity, so that heat exchange can be better performed. Compared with the existing method of dissipating heat from the outside of the oil pan 4, the provision of the heat dissipation pipe 5 can effectively increase the contact area with the lubricating oil, thereby improving the heat dissipation efficiency of the oil pan 4. At the same time, the electrically controlled heat dissipation fan 3, the air inlet channel in the electrically controlled cover seat 2 and the air inlet cavity 7 in the oil pan 4 are used to introduce flowing air into the heat dissipation pipe 5. There is no need to set up other additional parts, which will not affect the existing layout. The changes are small, and the structure is simple, easy to use and low cost.
[0043] In this embodiment, see Figure 4 、 Figure 5 and Figure 6 As a preferred design, both ends of the heat dissipation pipe 5 are connected to the oil pan 4 through a connecting structure 8. The connecting structure 8 includes a sealing gasket 83, a nut 82, a connecting pipe 81, a rubber tube (not shown in the drawings) and a clamp 84. The connecting pipe 81 passes through the side wall of the oil chamber 41 and extends into the air intake chamber 7. The connecting pipe 81 connected to the first port of the heat dissipation pipe 5 extends into the air intake chamber 7, and the connecting pipe 81 connected to the second port extends to the outside of the oil pan 4. A limiting ring is provided on the connecting pipe 81 for abutting against the inner wall of the oil chamber 41. The sealing gasket 83 is provided between the limiting ring and the inner wall of the oil chamber 41. The nut 82 is screwed on the connecting pipe 81 and pressed against the outside of the side wall of the oil chamber 41, so that the limiting ring presses the sealing gasket 83 to form a sealing effect, thereby preventing the lubricating oil from leaking from between the connecting pipe 81 and the side wall of the oil chamber 41. The rubber tube is fitted over the connecting tube 81, and the end of the heat dissipation tube 5 is fitted over the rubber tube. A clamp 84 secures the heat dissipation tube 5 to the connecting tube 81, and the rubber tube seals the gap between the heat dissipation tube 5 and the connecting tube 81. Both ends of the heat dissipation tube 5 are fixed and sealed to the oil pan 4 via the connecting structure 8, providing a stable installation for the heat dissipation tube 5. No additional fixing structures are required between the tube body and the oil chamber 41, minimizing the impact on the lubricating oil.
[0044] In this embodiment, as a preferred design, both ends of the heat dissipation pipe 5 are provided with a reducing section with a gradually shrinking inner diameter, and the inner diameter of the port is the smallest, that is, the reducing section gradually becomes smaller from the side close to the middle to the side of the port, and the inner diameter of the port is smaller than the inner diameter of the main part of the heat dissipation pipe 5. By providing the reducing section, the air in the pipe can be made turbulent, thereby improving the heat dissipation efficiency.
[0045] In this embodiment, see Figure 1 、 Figure 3 and Figure 4 The oil pan 4 is arranged at the bottom of the casing 1 and the electric control housing base 2. As a preferred design, the air intake cavity 7 is opened on the top surface of the oil pan 4 and is located next to the oil cavity 41. The air outlet port of the air intake channel 6 is located at the bottom of the electric control housing base 2 and is well connected with the air intake cavity 7.
[0046] In this embodiment, see Figure 4 、 Figure 5 and Figure 6 As a preferred design, the internal cooling assembly utilizes a single heat dissipation tube 5. This reduces the number of openings on the sidewalls of the oil chamber 41 and the size of the air intake chamber 7, thereby minimizing the impact on the structure of the oil pan 4. The heat dissipation tube 5 is curved within the oil chamber 41 to ensure maximum contact with the lubricating oil and maximize heat dissipation efficiency. The total surface area of the heat dissipation tube 5 is preferably approximately double or more than the internal surface area of the oil chamber 41, thereby at least doubling the heat dissipation efficiency.
[0047] In this embodiment, see Figure 4 、 Figure 5 and Figure 6 As a preferred design, the heat dissipation pipe 5 includes a plurality of straight pipe sections 51 and curved pipe connecting sections 52 connecting the straight pipe sections 51. The straight pipe sections 51 can all extend along the length direction of the oil pan 4 or along the width direction of the oil pan 4 to ensure the contact area with the lubricating oil. Furthermore, the straight pipe sections 51 are arranged at an angle in the oil chamber 41, that is, the first port and the second port are located at different heights of the oil pan 4, and the axis of the heat dissipation pipe 52 can be arranged to be perpendicular or slightly inclined to the flow direction of the lubricating oil in the oil pan 41. In this way, the lubricating oil at different height layers is cooled evenly, and the lubricating oil can be in a turbulent state, thereby improving the heat dissipation efficiency.
[0048] In other embodiments, the internal cooling assembly may also include multiple heat pipes 5. The number of heat pipes 5 can be adjusted based on actual needs. The heat pipes 5 are straight and independent. The first port of each heat pipe 5 is connected to the air inlet chamber 7, allowing ventilation to all heat pipes 5 simultaneously through the air inlet chamber 7. The straight heat pipe 5 also facilitates the removal of lint. If lint enters the heat pipe 5, a brush can be inserted directly into the heat pipe 5 to remove the lint. Furthermore, when there are multiple heat pipes 5, heat pipes 5 can be positioned at multiple locations along the height of the oil chamber 41. In other words, multiple layers of heat pipes 5 are arranged along the height of the oil chamber 41, enabling cooling of lubricating oil at different heights. Furthermore, the heat pipes 5 are preferably arranged at an angle within the oil pan 4, with the first and second ports located at different heights within the oil chamber 41. This arrangement creates a turbulent flow of the lubricating oil, improving heat dissipation efficiency. The heat pipes 5 can also be parallel to each other, and the axis of the heat pipe 5 can be perpendicular or slightly inclined to the flow direction of the lubricating oil within the oil chamber 41.
[0049] The utility model further provides a sewing machine, comprising an electric control module, an electric control cooling fan 3 and an oil pan 4. The electric control module comprises an electric control housing seat 2 and the above-mentioned heat dissipation mechanism.
[0050] As can be seen from the above, the heat dissipation mechanism and sewing machine of the present invention have the following beneficial effects:
[0051] 1. By setting up an internal cooling component and utilizing the heat dissipation pipe 5 to exchange heat with the lubricating oil in the oil pan 4, the heat exchange area of the lubricating oil can be greatly increased. Moreover, the wall thickness of the heat dissipation pipe 5 is much smaller than that of the oil pan 4. Compared with the existing air cooling method outside the oil pan 4, the cooling effect can be effectively improved. At the same time, the electrically controlled heat dissipation fan 3, the air inlet channel in the electrically controlled housing seat 2, and the air inlet cavity 7 in the oil pan 4 are utilized to introduce flowing air into the heat dissipation pipe 5. There is no need to additionally set up a fan and other parts. Modifications can be made to the existing parts without affecting the existing layout. The modification is small, and the structure is simple, easy to use, and low cost.
[0052] 2. The cooling pipe is arranged in a curved and inclined manner or in a multi-layer manner in the oil pan 4, so that the lubricating oil at different height layers can be cooled evenly, and the lubricating oil can be in a turbulent state, thereby improving the heat dissipation efficiency.
[0053] In summary, the present invention effectively overcomes various shortcomings of the prior art and has high industrial utilization value.
[0054] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed in the present invention are intended to be covered by the claims of the present invention.
Claims
1. A heat dissipation mechanism for an oil pan in a sewing machine, wherein the sewing machine is provided with an electric control module and an electric control heat dissipation fan (3) for blowing air toward the electric control module to dissipate heat, the electric control module including an electric control housing seat (2) located at the oil pan (4), the oil pan (4) being provided with an oil cavity (41) for containing lubricating oil, characterized in that: The heat dissipation mechanism includes an internal cooling component located in the oil cavity (41), an air intake cavity (7) opened on the oil pan (4), and an air intake channel (6) arranged in the electric control housing seat (2); the internal cooling component includes a plurality of heat dissipation pipes (5), the thickness of the heat dissipation pipes (5) is 0.2 to 2.0 mm, the first port of the heat dissipation pipe (5) is connected to the air intake cavity (7), and the second port is connected to the external environment of the oil pan (4); the air intake cavity (7) is connected to the air outlet port of the air intake channel (6), the air intake port of the air intake channel (6) faces the electric control heat dissipation fan (3), and the electric control heat dissipation fan (3) can blow air to the air intake port of the air intake channel (6) when working.
2. The heat dissipation mechanism according to claim 1, wherein: Both ends of the heat dissipation pipe (5) are connected to the side wall of the oil chamber (41) through a connecting structure (8). The connecting structure (8) includes a sealing gasket (83), a nut (82), a connecting pipe (81), a rubber tube and a clamp (84). The connecting pipe (81) passes through the side wall of the oil chamber (41), and a limiting ring is provided on the connecting pipe (81) for abutting against the inner wall surface of the oil chamber (41). The sealing gasket (83) is provided between the limiting ring and the inner wall surface of the oil chamber (41). The nut (82) is screwed onto the connecting pipe (81) and pressed against the outside of the side wall of the oil chamber (41). The rubber tube is sleeved on the connecting pipe (81), and the port of the heat dissipation pipe (5) is sleeved on the rubber tube. The clamp (84) clamps and fixes the heat dissipation pipe (5) to the connecting pipe (81).
3. The heat dissipation mechanism according to claim 1, wherein: Both ends of the heat dissipation pipe (5) are provided with a reducing section with a gradually shrinking inner diameter, and the port pipe diameter is the smallest.
4. The heat dissipation mechanism according to claim 1, wherein: The internal cooling component comprises a heat dissipation pipe (5), and the heat dissipation pipe (5) is bent and arranged in the oil pan (4).
5. The heat dissipation mechanism according to claim 4, characterized in that: The heat dissipation pipe (5) comprises a plurality of straight pipe sections (51) and a curved pipe connecting section (52) connecting two straight pipe sections (51); the straight pipe sections (51) are arranged obliquely in the oil pan (4), and the first port and the second port are located at different heights of the oil pan (4).
6. The heat dissipation mechanism according to claim 1, characterized in that: The internal cooling component comprises a plurality of heat dissipation pipes (5), and the heat dissipation pipes (5) are straight pipes.
7. The heat dissipation mechanism according to claim 6, characterized in that: Heat dissipation pipes (5) are provided at multiple different positions in the height direction of the oil pan (4).
8. The heat dissipation mechanism according to claim 6, wherein: The heat dissipation pipe (5) is arranged obliquely in the oil pan (4), and the first port and the second port are located at different heights of the oil pan (4).
9. A sewing machine comprising an electric control module, an electric control cooling fan (3) and an oil pan (4), wherein the electric control module comprises an electric control housing seat (2), and is characterized in that: It also includes the heat dissipation mechanism according to any one of claims 1 to 8.