Metal surface polishing device with cooling structure

Abstract

The metal surface polishing device with the cooling structure comprises a grinding disc, a connecting cover is arranged at the top end of the grinding disc, a first cooling plate is fixedly connected to the bottom face of the inner wall of the connecting cover, and the bottom face of the first cooling plate is tightly attached to the surface of the grinding disc. The first cooling plate, the paraffin block, the second cooling plate and the cooling pipe are sequentially arranged above the grinding disc, when the grinding disc is polished to generate heat, the heat can be directly transferred to the paraffin block through the first cooling plate, then the paraffin block can generate a phase change state according to the heat, and then the heat is quickly transferred to the second cooling plate; and circulating cooling is achieved through the cooling pipes on the surface of the second cooling plate, the cooling pipes are matched with air draft and dissipation of an air draft fan, respective advantages can be fully played through the synergistic effect of the phase-change material paraffin block, the circulating cooling liquid and the fan, a more efficient heat dissipation system is formed, and compared with the prior art, the situation that the heat conductivity of air is relatively low can be solved.

Description

Technical Field

[0001] The utility model relates to the field of polishing devices, in particular to a metal surface polishing device with a cooling structure. Background Art

[0002] Polishing refers to a processing method that uses mechanical, chemical or electrochemical effects to reduce the surface roughness of a workpiece to obtain a bright and flat surface. It is a modification process of the workpiece surface using polishing tools and abrasive particles or other polishing media. Polishing cannot improve the dimensional accuracy or geometric shape accuracy of the workpiece, but is aimed at obtaining a smooth surface or mirror gloss, and is sometimes used to eliminate gloss (matte). Usually a polishing wheel is used as a polishing tool; during polishing, a high-speed rotating polishing wheel (circumferential speed of more than 20 m / s) is pressed against the workpiece, causing the abrasive to roll and slightly cut the workpiece surface, thereby obtaining a bright processed surface.

[0003] During the polishing process, a large amount of heat will be generated due to the high-speed friction and extrusion between the polishing tool and the metal surface. If the heat cannot be dissipated in a timely and effective manner, the excessively high temperature will have many adverse effects on the metal surface quality. In order to solve this problem, the existing polishing device is usually equipped with a cooling structure. However, the existing cooling structure has the problem of poor cooling effect in actual application. Although the traditional air-cooled cooling structure, such as fans and ventilation ducts, can promote air flow to a certain extent and take away some heat, its heat dissipation capacity is often insufficient for high-power and long-term polishing operations. The thermal conductivity of air is relatively low, and a large amount of heat cannot be quickly and effectively transferred from the polishing area, resulting in the temperature of the polishing area still being high.

[0004] Therefore, a metal surface polishing device with a cooling structure is proposed. Utility Model Content

[0005] In view of the above problems, the utility model provides a metal surface polishing device with a cooling structure to solve the problems raised in the above background technology.

[0006] The technical solution of the utility model is:

[0007] A metal surface polishing device with a cooling structure comprises a grinding wheel, a connecting cover is provided at the top of the grinding wheel, a first cooling plate is fixedly connected to the bottom surface of the inner wall of the connecting cover, the bottom surface of the first cooling plate is tightly fitted with the surface of the grinding wheel, a second cooling plate fixed to the inner wall of the connecting cover is provided above the first cooling plate, a paraffin block is provided between the second cooling plate and the first cooling plate, a cooling pipe is fixedly connected to the surface of the second cooling plate, a coolant is provided inside the cooling pipe, a circulating pump is fixedly connected to the outer surface of the cooling pipe, a guide cylinder is fixedly connected to the top of the connecting cover, the top of the guide cylinder is connected to an air guide cover, and the inner wall of the air guide cover is fixedly connected to an exhaust fan via a support frame.

[0008] The working principle of the above technical solution is as follows:

[0009] Connect the air guide cover on the top of the connecting cover to the starting motor, and then rotate the starting grinding wheel for polishing. During the process, the grinding wheel starts to rotate at high speed and contacts the metal surface. Due to the friction, the grinding wheel heats up rapidly. At this time, the first cooling plate close to the grinding wheel transfers the heat to the paraffin block. When the paraffin block reaches its phase change temperature, it changes from solid to liquid, absorbing a large amount of heat, thereby initially slowing down the temperature rise rate of the grinding wheel. At the same time, the coolant in the cooling pipe circulates and dissipates heat with the action of the circulating pump, and the temperature of the paraffin block rises to the second cooling plate and is quickly extracted to the outside of the air guide cover with the help of the exhaust fan.

[0010] In a further technical solution, a fixing opening is provided at the center of the top surface of the connecting cover, the outer surface of the bottom end of the guide cylinder is fixed to the inner wall of the fixing opening, and the diameter of the fixing opening is smaller than the diameter of the connecting cover.

[0011] Through the above technical solution, the connection position between the sealing guide cylinder and the connecting cover is convenient, and at the same time, the small opening is formed to concentrate heat upward.

[0012] In a further technical solution, the air guide cover is conical, and the bottom diameter of the air guide cover is the same as the diameter of the guide tube, and the top diameter of the air guide cover is larger than the diameter of the fixing port.

[0013] Through the above technical solution, it is convenient to concentrate heat and dissipate it quickly.

[0014] In a further technical solution, a fixed seat is provided at the top center of the air guide cover, six equidistantly distributed support blocks are fixedly connected between the outer surface of the fixed seat and the inner wall of the air guide cover, and a bearing is fixedly connected at the center of the top surface of the fixed seat.

[0015] Through the above technical solution, the shaft body that is integrally connected to the external driving device can be conveniently connected.

[0016] In a further technical solution, a filter screen is fixedly connected between each of the support blocks.

[0017] Through the above technical solution, the exhaust fan can maintain the heat dissipation and dust can be prevented from entering the interior of the connection cover.

[0018] In a further technical solution, the cooling pipe is spiral-shaped, a mounting groove matching the cooling pipe is provided on the surface of the second cooling plate, and the surface of the cooling pipe is fixed to the inner wall of the mounting groove.

[0019] By adopting the above technical solution, the cooling pipe is arranged in a spiral shape, so that the circulation path of the coolant in the cooling pipe can be increased, the heat dissipation surface can be increased, and the thermal efficiency can be improved.

[0020] In a further technical solution, a thread groove is provided on the bottom surface of the connecting cover, and a spiral pattern threadably connected to the thread groove is provided on the top outer surface of the grinding disc, and the pattern of the spiral pattern and the thread groove is opposite to the rotation direction of the grinding disc.

[0021] The above technical solution can facilitate the installation of the grinding disc and prevent the grinding disc from falling during the polishing process.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] By sequentially arranging a first cooling plate, a paraffin block, a second cooling plate and a cooling pipe above the grinding wheel, when heat is generated by polishing the grinding wheel, the heat can be directly transferred to the paraffin block through the first cooling plate, and then the paraffin block can produce a phase change state according to the heat, and then quickly transfer the heat to the second cooling plate, and then the cooling pipe on the surface of the second cooling plate realizes circulation cooling, and cooperates with the exhaust fan to dissipate the air. The overall synergistic effect of the phase change material paraffin block, circulating coolant and fan can give full play to their respective advantages to form a more efficient heat dissipation system, which can solve the problem of relatively low thermal conductivity of air compared with the existing technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the assembly structure of the utility model;

[0026] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 4 It is a partial cross-sectional structural schematic diagram of the connection cover of the utility model.

[0028] Description of reference numerals:

[0029] 1. Grinding disc; 2. Connecting cover; 21. First cooling plate; 22. Paraffin block; 3. Fixing port; 4. Guide tube; 5. Wind guide cover; 6. Support frame; 7. Exhaust fan; 8. Second cooling plate; 9. Cooling pipe; 10. Circulating pump; 11. Fixed seat; 12. Support block; 13. Filter; 14. Bearing; 15. Mounting groove; 16. Thread groove; 17. Spiral pattern. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example:

[0034] See also Figure 1-4 A metal surface polishing device with a cooling structure comprises a grinding disc 1, a connecting cover 2 is arranged at the top of the grinding disc 1, a first cooling plate 21 is fixedly connected to the bottom surface of the inner wall of the connecting cover 2, the bottom surface of the first cooling plate 21 is tightly fitted with the surface of the grinding disc 1, a second cooling plate 8 fixed to the inner wall of the connecting cover 2 is arranged above the first cooling plate 21, a paraffin block 22 is arranged between the second cooling plate 8 and the first cooling plate 21, a cooling pipe 9 is fixedly connected to the surface of the second cooling plate 8, a coolant is arranged inside the cooling pipe 9, a circulating pump 10 is fixedly connected to the outer surface of the cooling pipe 9, a guide cylinder 4 is fixedly connected to the top of the connecting cover 2, a wind guide cover 5 is connected to the top of the guide cylinder 4, and an exhaust fan 7 is fixedly connected to the inner wall of the wind guide cover 5 through a support frame 6.

[0035] The working principle of the above technical solution is as follows:

[0036] Connect the air guide cover 5 on the top of the connecting cover 2 to the starting motor, and then rotate and start the grinding wheel 1 for polishing. During the process, the grinding wheel 1 starts to rotate at high speed and contacts the metal surface. Due to the friction, the grinding wheel 1 heats up rapidly. At this time, the first cooling plate 21 close to the grinding wheel 1 transfers the heat to the paraffin block 22. When the paraffin block 22 reaches its phase change temperature, it changes from solid to liquid, absorbing a large amount of heat, thereby initially slowing down the temperature rise rate of the grinding wheel 1. At the same time, the coolant in the cooling pipe 9 circulates with the action of the circulating pump 10 to dissipate heat, and the paraffin block 22 rises to the temperature of the second cooling plate 8 and is quickly extracted to the outside of the air guide cover 5 in conjunction with the exhaust fan 7.

[0037] See also Figure 1 and Figure 2 A fixing opening 3 is opened at the center of the top surface of the connecting cover 2, and the outer surface of the bottom end of the guide cylinder 4 is fixed to the inner wall of the fixing opening 3, and the diameter of the fixing opening 3 is smaller than the diameter of the connecting cover 2.

[0038] It is convenient to seal the connection position between the guide tube 4 and the connection cover 2, and at the same time, a small opening is formed to concentrate heat upward.

[0039] See also Figure 1 and Figure 2 The air guide cover 5 is conical, and the bottom diameter of the air guide cover 5 is the same as the diameter of the guide tube 4 , and the top diameter of the air guide cover 5 is larger than the diameter of the fixing port 3 .

[0040] Conveniently concentrate heat and dissipate it quickly.

[0041] See also Figure 1 and Figure 2 A fixing seat 11 is arranged at the top center of the air guide cover 5 , six equidistantly distributed supporting blocks 12 are fixedly connected between the outer surface of the fixing seat 11 and the inner wall of the air guide cover 5 , and a bearing 14 is fixedly connected at the top center of the fixing seat 11 .

[0042] The shaft body of the external driving device can be conveniently connected as a whole.

[0043] See also Figure 1 and Figure 2 A filter screen 13 is fixedly connected between each support block 12 .

[0044] The exhaust fan 7 is kept to exhaust air and dissipate heat, while preventing dust from entering the interior of the connection cover 2.

[0045] See also Figure 2 and Figure 4The cooling pipe 9 is spiral-shaped, and a mounting groove 15 matching the cooling pipe 9 is opened on the surface of the second cooling plate 8 . The surface of the cooling pipe 9 is fixed to the inner wall of the mounting groove 15 .

[0046] The cooling tube 9 is arranged in a spiral shape, so that the circulation path of the coolant in the cooling tube 9 can be increased, the heat dissipation surface can be enlarged, and the thermal efficiency can be improved.

[0047] Please refer to 4 , a thread groove 16 is provided on the bottom surface of the connecting cover 2 , and a spiral pattern 17 threadably connected to the thread groove 16 is provided on the top outer surface of the grinding disc 1 , and the pattern of the spiral pattern 17 and the thread groove 16 are opposite to the rotation direction of the grinding disc 1 .

[0048] The grinding disc 1 can be easily installed and prevented from falling during the polishing process.

[0049] During operation, the air guide cover 5 on the top of the connecting cover 2 is connected to the starting motor, and then the grinding disc 1 is rotated to start the polishing operation. During the process, the grinding disc 1 starts to rotate at a high speed and contacts the metal surface. Due to the friction, the grinding disc 1 heats up rapidly. At this time, the first cooling plate 21 close to the grinding disc 1 transfers heat to the paraffin block 22. When the paraffin block 22 reaches its phase change temperature, it changes from solid to liquid, absorbing a large amount of heat, thereby initially slowing down the temperature rise rate of the grinding disc 1. At the same time, the coolant in the cooling pipe 9 circulates and dissipates heat with the action of the circulating pump 10, and the temperature of the paraffin block 22 rises to the second cooling plate 8 and is quickly extracted to the outside of the air guide cover 5 in conjunction with the exhaust fan 7. In addition, the device as a whole is used separately , when only relying on the paraffin block 22 to absorb heat for preliminary cooling, the paraffin block 22 will reach saturation, and then the temperature will continue to rise. In this case, the coolant inside the cooling tube 9 is circulated again, and the heat dissipation area can be increased along the spiral shape of the cooling tube 9, and the high-speed operation of the exhaust fan 7 can be used to dissipate heat. When polishing is completed and no continuous heat is generated, the paraffin block 22 changes from the use state to the solid state, and can continue to play a heat dissipation effect during the subsequent use of the grinding disc 1; in addition, when the polishing operation is completed, the grinding disc 1 stops rotating, allowing the coolant inside the cooling tube 9 and the exhaust fan 7 to continue to run for a period of time to dissipate the residual heat and avoid local overheating from causing damage to the whole.

[0050] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A metal surface polishing device with a cooling structure, comprising a grinding disc (1), characterized in that: A connecting cover (2) is provided at the top end of the grinding disc (1), a first cooling plate (21) is fixedly connected to the bottom surface of the inner wall of the connecting cover (2), the bottom surface of the first cooling plate (21) is tightly fitted with the surface of the grinding disc (1), a second cooling plate (8) fixed to the inner wall of the connecting cover (2) is provided above the first cooling plate (21), a paraffin block (22) is provided between the second cooling plate (8) and the first cooling plate (21), a cooling pipe (9) is fixedly connected to the surface of the second cooling plate (8), a cooling liquid is provided inside the cooling pipe (9), a circulating pump (10) is fixedly connected to the outer surface of the cooling pipe (9), a guide cylinder (4) is fixedly connected to the top end of the connecting cover (2), the top end of the guide cylinder (4) is connected to an air guide cover (5), and the inner wall of the air guide cover (5) is fixedly connected to an exhaust fan (7) via a support frame (6).

2. The metal surface polishing device with a cooling structure according to claim 1, characterized in that: A fixing opening (3) is provided at the center of the top surface of the connecting cover (2), the outer surface of the bottom end of the guiding cylinder (4) is fixed to the inner wall of the fixing opening (3), and the diameter of the fixing opening (3) is smaller than the diameter of the connecting cover (2).

3. The metal surface polishing device with a cooling structure according to claim 2, characterized in that: The air guide cover (5) is conical, and the bottom diameter of the air guide cover (5) is the same as the diameter of the guide tube (4), and the top diameter of the air guide cover (5) is larger than the diameter of the fixing port (3).

4. The metal surface polishing device with a cooling structure according to claim 1, characterized in that: A fixing seat (11) is arranged at the top center of the air guide cover (5), six equidistantly distributed supporting blocks (12) are fixedly connected between the outer surface of the fixing seat (11) and the inner wall of the air guide cover (5), and a bearing (14) is fixedly connected at the top center of the fixing seat (11).

5. The metal surface polishing device with a cooling structure according to claim 4, characterized in that: A filter screen (13) is fixedly connected between each of the support blocks (12).

6. The metal surface polishing device with a cooling structure according to claim 1, characterized in that: The cooling pipe (9) is spiral-shaped, and a mounting groove (15) matching the cooling pipe (9) is provided on the surface of the second cooling plate (8), and the surface of the cooling pipe (9) is fixed to the inner wall of the mounting groove (15).

7. The metal surface polishing device with a cooling structure according to claim 1, characterized in that: The bottom surface of the connecting cover (2) is provided with a thread groove (16), and the top outer surface of the grinding disc (1) is provided with a spiral pattern (17) threadedly connected to the thread groove (16), and the pattern of the spiral pattern (17) and the thread groove (16) are opposite to the rotation direction of the grinding disc (1) in use.

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