Engine heat dissipation device and forming process thereof

Abstract

This invention relates to the field of oil pan molding technology, and more particularly to an engine cooling device, which is located at the lower end of the engine body and includes an oil pan. The oil pan has a windward end and a leeward end. A cooling chamber is provided on the bottom of the oil pan. An upper cooling plate is formed on the upper part of the cooling chamber, and a lower cooling plate is formed on the lower plate of the cooling chamber. The cooling chamber penetrates the oil pan at both the windward and leeward ends. The cooling chamber is provided with multiple connectors connecting the upper and lower cooling plates. Each connector divides the cooling chamber into multiple flow channels connecting the windward and leeward ends. At least one flow channel has a width closer to the windward end that is smaller than the width closer to the leeward end, and at least one flow channel has a height closer to the windward end that is smaller than the height closer to the leeward end. This invention solves the technical problem of insufficient heat dissipation performance of existing oil pans. Based on this, a molding process for an engine cooling device is also proposed.

Description

Technical Field

[0001] This invention relates to the field of oil pan molding technology, and more particularly to an engine cooling device and its molding process. Background Technology

[0002] Currently, the oil pan is the lower part of the crankcase, also known as the lower crankcase. Its function is to seal the crankcase as an outer shell for oil storage, prevent impurities from entering, collect and store the lubricating oil flowing back from the various friction surfaces of the diesel engine, dissipate some heat, and prevent the lubricating oil from oxidizing. Existing oil pans also involve the design of heat dissipation structures, which play a crucial role in engine cooling. For example, Chinese Patent Publication No. CN107131025A discloses an engine oil pan heat dissipation structure, which includes an oil pan body. The outer bottom surface of the oil pan body has heat dissipation ribs protruding outwards. The inner bottom surface of the oil pan body is provided with heat dissipation grooves corresponding to the positions of each heat dissipation rib. The heat dissipation ribs include two opposing horizontal ribs, and longitudinal ribs extending towards each other are arranged alternately on the two horizontal ribs to form a meandering flow channel. An oil pan cover plate is also provided below the oil pan body. The oil pan cover plate is sealed to the bottom surface of the oil pan body to form a flow channel between the flow channel and the oil pan cover plate. The side of the oil pan cover plate facing or away from the oil pan body is provided with raised ribs.

[0003] The applicant has made similar improvements to this technology in order to maximize its heat dissipation efficiency. Summary of the Invention

[0004] Therefore, in view of the above problems, the present invention proposes an engine cooling device, which solves the technical problem of insufficient heat dissipation performance of existing oil pans. Based on this, a molding process for the engine cooling device is also proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an engine cooling device, which is located at the lower end of the engine body, includes an oil pan, the oil pan having a windward end and a leeward end, a cooling chamber being provided on the bottom of the oil pan, an upper cooling plate being formed on the upper part of the cooling chamber, and a lower cooling plate being formed on the lower plate of the cooling chamber, the cooling chamber penetrating the oil pan at both the windward end and the leeward end, and a plurality of connectors connecting the upper cooling plate and the lower cooling plate being provided in the cooling chamber, each connector dividing the cooling chamber into a plurality of flow channels connecting the windward end and the leeward end, at least one flow channel having a width near the windward end that is smaller than the width near the leeward end, and at least one flow channel having a height near the windward end that is smaller than the height near the leeward end.

[0006] Furthermore, the lower end face of the oil pan has a downward protrusion on the side near the leeward end, thereby making each flow channel S-shaped. Each flow channel includes a uniform distribution section near the windward end, a diffuse distribution section near the leeward end, and a sinking section connecting the uniform distribution section and the diffuse distribution section. The sinking section is not provided with a connecting body.

[0007] Furthermore, the volume difference between the flow channels in the uniform distribution section is less than 10%, the connector in the middle of the diffusion distribution section is elliptical cylindrical, the connectors in the diffusion distribution section and on both sides are arc-shaped, and the number of arc-shaped connectors in the diffusion distribution section is less than the number of connectors in the uniform distribution section.

[0008] Furthermore, the elliptical cylindrical connector is made of copper, while the remaining connectors are made of aluminum foam.

[0009] Furthermore, a plurality of first heat dissipation fins are provided on the peripheral surface of the oil pan in a vertical direction, and a plurality of second heat dissipation fins are provided on the lower end surface of the oil pan, with each second heat dissipation fin extending from the windward end to the leeward end.

[0010] A molding process for an engine cooling device based on the same inventive concept includes the following steps. The first step is to form a plate. Before stamping, the windward and leeward ends of the heat dissipation chamber are cut off and reserved. The oil pan substrate is formed by stamping. The oil pan substrate does not have an upper heat dissipation plate, thus forming the inlet and outlet of the flow channel. After stamping, the placement recesses of each connecting part are formed. The second step is to form an upper heat sink plate and weld each connector onto the upper heat sink plate. The upper heat sink plate is then placed inside the oil pan substrate, so that each connector is placed in its respective recess. Then, contact welding is used to connect the connector to the lower heat sink plate. The third step is to weld the upper heat sink plate onto the oil pan substrate; The fourth step is to use a deburring device to grind the edges of the workpiece after cutting to remove the burrs and rough edges, and then clean it to obtain the finished oil pan.

[0011] Furthermore, the deburring equipment includes a control cabinet, a support platform fixed to the top of the control cabinet, support columns fixed to the four corners of the top of the support platform, and the same top plate fixed to the top of the four support columns. The top of the support platform is provided with a clamping and fixing assembly for clamping the oil pan. The rear side of the clamping and fixing assembly is provided with a deburring assembly for removing burrs and rough edges from the oil pan. The clamping and fixing assembly clamps the oil pan and rotates it on the top of the support platform so that the deburring assembly can grind and remove burrs and rough edges from the four edges of the oil pan.

[0012] Furthermore, the clamping and fixing assembly includes a fixed base fixedly disposed on the top of the support platform. The top of the fixed base is movably connected to a first rotating shaft via a bearing. A first electromagnet is fixed at the top of the first rotating shaft. The first electromagnet is in contact with one side of the bottom of the oil pan. A second electromagnet is attracted to the top of the first electromagnet. The second electromagnet is connected to the bottom of the inside of the oil pan. The first electromagnet and the second electromagnet have opposite magnetic properties. The oil pan can be fixed between the first electromagnet and the second electromagnet by the attraction of the first electromagnet and the second electromagnet. The second electromagnet is provided with a first electric push rod at the top. The top of the second electromagnet is fixed to the bottom of the movable end of the first electric push rod. The top of the first electric push rod passes through the top plate and a rotating disk is fixed to the outer wall of the first electric push rod. The rotating disk passes through the top plate and is rotatably connected to the top plate. The rotating disk drives the first electric push rod to rotate on the top plate.

[0013] Furthermore, an incomplete gear 1 is fixed to the outer end of the rotating disk. A second rotating shaft is provided around the incomplete gear 1. The bottom end of the second rotating shaft is movably connected to the top of the top plate through a bearing. An incomplete gear 2 is fixed through the outer end of each second rotating shaft. The four incomplete gear 2 are distributed in a square with the incomplete gear 1 as the center. The incomplete gear 2 located directly behind the incomplete gear 1 meshes with the incomplete gear 1. Starting from the incomplete gear 2 that meshes with the incomplete gear 1, the second incomplete gear 2 rotates 90° counterclockwise and then meshes with the incomplete gear 1. The third incomplete gear 2 rotates 90° counterclockwise and then meshes with the incomplete gear 1. The fourth incomplete gear 2 rotates 90° counterclockwise and then meshes with the incomplete gear 1. Each second rotating shaft has a pulley fixed at its outer end. The pulley is located at the top of the incomplete gear 2. A belt is provided between the pulley at the top of the first incomplete gear 2 and the pulley at the top of the fourth incomplete gear 2, between the pulley at the top of the first incomplete gear 2 and the pulley at the top of the second incomplete gear 2, and between the pulley at the top of the second incomplete gear 2 and the pulley at the top of the third incomplete gear 2, for driving the four incomplete gear 2 to rotate synchronously. A first motor is fixedly connected to the top of the second shaft that passes through the fourth incomplete gear, which is used to drive the four second shafts to rotate synchronously.

[0014] Furthermore, the deburring assembly includes a milling cutter located on the rear side of the oil pan. The cutting face of the milling cutter contacts the rear edge of the oil pan. A whetstone is provided on one side of the milling cutter, and a second electric push rod is provided on the side of the whetstone away from the milling cutter. The second electric push rod drives the milling cutter and the whetstone to reciprocate along the edge of the oil pan to remove burrs and roughen the edge of the oil pan.

[0015] By adopting the aforementioned technical solution, the beneficial effects of the present invention are: 1. This solution utilizes a heat dissipation chamber to effectively improve engine cooling performance and increase its efficiency. Specifically, it employs a defined connecting body and flow channels, ensuring that at least one flow channel has a width closer to the windward end that is smaller than its width closer to the leeward end, and that at least one flow channel has a height closer to the windward end that is smaller than its height closer to the leeward end, thus achieving effective heat dissipation.

[0016] Furthermore, the arrangement of balanced distribution sections, diffusion distribution sections, and sinking sections allows for better airflow. The placement of the connecting body in each section further enhances the flow effect, thus improving heat dissipation. The rotation of copper and aluminum foam materials allows copper to act as the primary heat transfer component, while aluminum foam serves as the secondary heat transfer component. The aluminum foam also effectively reduces wind noise and noise generated by the heat dissipation chambers, while simultaneously providing effective heat dissipation. The combination of the first and second heat dissipation fins constitutes the heat dissipation fins of the oil pan, achieving excellent heat dissipation.

[0017] 2. This molding method can effectively mold heat-dissipating oil pans. The process is relatively simple, the cost is low, and the efficiency is high.

[0018] The oil pan body is fixed to the top of the support platform using a clamping and fixing assembly. A second electric push rod is used to push a milling cutter to remove burrs and rough edges on the edge of the oil pan body. A grinding stone installed on one side of the milling cutter is used to polish the edge surface of the oil pan body to ensure that the surface of the oil pan body is flat and smooth, preventing scratches to workers. Moreover, the deburring and de-roughening operations in this invention do not require manual operation, which can not only improve work efficiency but also save labor costs. By utilizing the first motor in the clamping and fixing assembly to drive the first electric push rod, which in turn drives the second electromagnet, the first electromagnet, and the first rotating shaft to rotate on the top of the fixed base, the four sides of the oil pan body are respectively oriented towards the milling cutter. This allows the deburring device of the present invention to automatically perform comprehensive grinding on the oil pan body. Furthermore, by using pulleys and belts to drive the four second rotating shafts to rotate synchronously, the second incomplete gear located directly behind the first incomplete gear first engages with the first incomplete gear first. This allows the second incomplete gear to drive the first incomplete gear first to rotate the first electric push rod and the oil pan body by 90°, changing the side facing the milling cutter. Subsequently, the three subsequent incomplete gears second, which engage with the first incomplete gear second in sequence, drive the oil pan body to rotate 90° in sequence, so that different sides of the oil pan body are oriented towards the milling cutter. This eliminates the tedious manual operation of changing the position of the oil pan body and improves the automation level of the present invention.

[0019] By fixing a short plate on the side of the movable seat away from the second electric push rod, and having the movable seat contact a tactile switch mounted on a sliding plate during its movement, the sliding plate is aligned with the edge of the oil pan body. Therefore, when the sliding plate contacts the tactile switch, it indicates that the milling cutter and grinding stone at one end of the second electric push rod can contact the edge of the oil pan body, thereby automatically shutting off the second motor that drives the second electric push rod, milling cutter, and grinding stone to move. This further improves the automation level of the invention, saves manpower, and increases the processing efficiency of the oil pan. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the oil pan of the present invention; Figure 2 This is a schematic diagram of the overall structure of the deburring device of the present invention; Figure 3 This is a schematic diagram of the deburring device of the present invention after the top plate has been removed; Figure 4 This is a schematic diagram of the first electromagnet and the oil pan in the deburring device of the present invention; Figure 5 This is a schematic diagram of the structure of the first and second electromagnets in the deburring device of the present invention. Figure 6 This is a top view of the deburring device of the present invention; Figure 7 This is a schematic diagram of the deburring component of the deburring device of the present invention; Figure 8 This is a rear view of the deburring device of the present invention; Figure 9 for Figure 8 Enlarged view of A in the middle; Figure 10 This is a schematic diagram of a half-section of the oil pan; Figure 11 yes Figure 10 Cross-sectional view of EE at the middle heat dissipation chamber.

[0021] In the picture: 1. Oil pan; 11. Windward end; 12. Leeward end; 13. Heat dissipation chamber; 14. Upper heat dissipation plate; 15. Lower heat dissipation plate; 16. Connector; 18. Protrusion; 171. Evenly distributed section; 172. Diffused distribution section; 173. Lowered section; 21. First heat dissipation fin; 22. Second heat dissipation fin; 3. Control cabinet; 4. Support platform; 5. Clamping and fixing assembly; 51. Fixed base; 52. First rotating shaft; 53. First electromagnet; 54. Second electromagnet; 55. First electric push rod; 56. Rotating disk; 57. Incomplete gear one; 58. Second rotating shaft; 59. Incomplete gear two; 510. First motor; 511. Pulley; 512. Belt; 6. Deburring assembly; 61. Milling cutter; 62. Double-ended screw; 63. Grinding stone; 64. Second electric push rod; 65. Mounting bracket; 66. Moving seat; 67. Reciprocating lead screw; 68. Extension bracket; 69. Second motor; 610. Limit rod; 611. Sliding bracket; 612. Sliding plate; 613. Tactile switch; 614. Short plate; 615. Threaded hole; 616. Limit bolt; 7. Support column; 8. Top plate. Detailed Implementation

[0022] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0023] refer to Figure 1 , Figure 10 , Figure 11 This embodiment provides an engine cooling device, which is located at the lower end of the engine body and includes an oil pan 1. The oil pan 1 has a windward end 11 and a leeward end 12. A cooling chamber 13 is provided on the bottom of the oil pan 1. An upper cooling plate 14 is formed on the upper part of the cooling chamber 13, and a lower cooling plate 15 is formed on the lower plate of the cooling chamber 13. The cooling chamber 13 penetrates the oil pan 1 at both the windward end 11 and the leeward end 12. A plurality of connectors 16 are provided in the cooling chamber 13 to connect the upper cooling plate 14 and the lower cooling plate 15. Each connector 16 divides the cooling chamber 13 into a plurality of flow channels connecting the windward end 11 and the leeward end 12. At least one flow channel has a width D near the windward end 11 that is smaller than the width W near the leeward end 12, and at least one flow channel has a height H near the windward end 11 that is smaller than the height L near the leeward end 12.

[0024] The lower end face of the oil pan 1 has a downward protrusion 18 on the side near the leeward end 12, thereby forming an S-shape for each flow channel. Each flow channel includes a uniformly distributed section 171 near the windward end 11, a diffused distribution section 172 near the leeward end 12, and a sinking section 173 connecting the uniformly distributed section 171 and the diffused distribution section 172. The sinking section 173 does not have a connector 16. The volume difference between the flow channels within the uniformly distributed section 171 is less than 10%. The connector 16 located in the middle of the diffused distribution section 172 is elliptical cylindrical in shape G, and the connectors 16 located on both sides of the diffused distribution section 172 are arc-shaped H. The number of arc-shaped connectors 16 within the diffused distribution section 172 is less than the number of connectors 16 in the uniformly distributed section 171. The elliptical cylindrical connectors 16 are made of copper, and the remaining connectors 16 are made of aluminum foam. The oil pan 1 has a plurality of first heat dissipation fins 21 arranged in the vertical direction on its peripheral surface, and a plurality of second heat dissipation fins 22 arranged on its lower end surface, with each second heat dissipation fin 22 extending from the windward end 11 to the leeward end 12.

[0025] A molding process for an engine cooling device based on the same inventive concept includes the following steps. The first step is to form a plate. Before stamping, the windward end 11 and the leeward end 12 of the heat dissipation chamber 13 are cut off and reserved. The oil pan 1 substrate is formed by stamping. The oil pan 1 substrate does not have an upper heat dissipation plate 14, thus forming the inlet and outlet of the flow channel. After stamping, the placement recess of each connecting part is formed. The second step is to form an upper heat sink 14 and weld each connector onto the upper heat sink 14. The upper heat sink 14 is placed inside the base material of the oil pan 1, so that each connector is placed in the placement recess. Then, the connector is connected to the lower heat sink 15 by contact welding. The third step is to weld the upper heat sink 14 onto the oil pan 1 substrate; The fourth step is to use a deburring device to grind the edges of the workpiece after cutting to remove the burrs and rough edges, and then clean it to obtain the finished oil pan 1.

[0026] Among them, the deburring equipment used is such as Figure 2 As shown, it includes a control cabinet 3, a support platform 4 is fixed on the top of the control cabinet 3, and support columns 7 are fixed at the four corners of the top of the support platform 4. The top of the four support columns 7 is fixed with the same top plate 8. A clamping and fixing assembly 5 for clamping the oil pan 1 is provided on the top of the support platform 4. A deburring assembly 6 for removing burrs and rough edges from the oil pan 1 is provided on the rear side of the clamping and fixing assembly 5. The clamping and fixing assembly 5 clamps the oil pan 1 and rotates it on the top of the support platform 4 so that the deburring assembly 6 can grind and remove burrs and rough edges from the four edges of the oil pan 1.

[0027] Specifically, such as Figure 3-8 As shown, the clamping and fixing assembly 5 includes a fixed base 51 fixedly disposed on the top of the support platform 4. The top of the fixed base 51 is movably connected to a first rotating shaft 52 via a bearing. A first electromagnet 53 is fixed at the top of the first rotating shaft 52. The first electromagnet 53 is in contact with one side of the bottom of the oil pan 1. A second electromagnet 54 is attracted to the top of the first electromagnet 53. The second electromagnet 54 is connected to the bottom of the inside of the oil pan 1. The deburring assembly 6 includes a milling cutter 61 located on the rear side of the oil pan 1. The cutting face of the milling cutter 61 contacts the rear edge of the oil pan 1. A whetstone 63 is provided on one side of the milling cutter 61. A second electric push rod 64 is provided on the side of the whetstone 63 away from the milling cutter 61. A double-ended screw 62 is threaded between the milling cutter 61 and the whetstone 63, as well as between the whetstone 63 and the second electric push rod 64, for detachably fixing the moving ends of the milling cutter 61, the whetstone 63, and the second electric push rod 64 together. When fixing the position of the oil pan 1, simply place the oil pan 1 on top of the first electromagnet 53, and then activate the first electric push rod 55. The first electric push rod 55 extends downward to drive the second electromagnet 54 installed at its bottom to move toward the oil pan 1 until the bottom of the second electromagnet 54 contacts the inside of the oil pan 1 and is attracted to the first electromagnet 53. In this invention, the first electromagnet 53 and the second electromagnet 54 have opposite magnetic properties. The oil pan 1 can be fixed between the first electromagnet 53 and the second electromagnet 54 through the attraction of the first electromagnet 53 and the second electromagnet 54. At this time, the rear edge of the oil pan 1 is located directly in front of the milling cutter 61 and is in contact with the milling cutter 61. Therefore, by activating the second electric push rod 64, the milling cutter 61 and the grinding stone 63 can be driven to move back and forth along the edge of the oil pan 1 to remove burrs and rough edges on the edge of the oil pan 1 and to polish the edge of the oil pan 1 to ensure the smoothness of the edge of the oil pan 1 and prevent scratches to the workers. Moreover, the deburring and de-roughening operations in this invention do not require manual operation, which can not only improve work efficiency but also save labor costs.

[0028] After grinding one side of the oil pan 1, the other sides of the oil pan 1 also need to be ground. This is to facilitate changing the orientation of the oil pan 1 and the position of the milling cutter 61. Figure 6 and8 As shown, a first electric push rod 55 is provided on the top of the second electromagnet 54. The top of the second electromagnet 54 is fixed to the bottom of the movable end of the first electric push rod 55. The top of the first electric push rod 55 passes through the top plate 8 and a rotating disk 56 is fixed on the outer wall of the first electric push rod 55. The rotating disk 56 passes through the top plate 8 and is rotatably connected to the top plate 8. The rotating disk 56 drives the first electric push rod 55 to rotate on the top plate 8. Moreover, an incomplete gear 57 is fixed to the outer end of the rotating disk 56. A second rotating shaft 58 is provided around the incomplete gear 57. The bottom end of the second rotating shaft 58 is movably connected to the top of the top plate 8 through a bearing. An incomplete gear 59 is fixed through the outer end of each second rotating shaft 58. The four incomplete gears 59 are distributed in a square with the incomplete gear 57 as the center. Each second rotating shaft 58 has a pulley 511 fixed at its outer end. The pulley 511 is located at the top of the incomplete gear 2 59. A belt 512 is provided between the pulley 511 at the top of the first incomplete gear 2 59 and the pulley 511 at the top of the fourth incomplete gear 2 59, between the pulley 511 at the top of the first incomplete gear 2 59 and the pulley 511 at the top of the second incomplete gear 2 59, and between the pulley 511 at the top of the second incomplete gear 2 59 and the pulley 511 at the top of the third incomplete gear 2 59. A first motor 510 is fixedly connected to the top of the second rotating shaft 58 that passes through the fourth incomplete gear 2 59 to drive the four second rotating shafts 58 to rotate synchronously.

[0029] By starting the first motor 510, the second rotating shaft 58 connected to it can be driven to rotate. The pulleys 511 and belts 512 installed on the outside of the multiple second rotating shafts 58 drive the four second rotating shafts 58 to rotate simultaneously and in the same direction, and to rotate counterclockwise. At the same time, it can also drive the incomplete gear 2 59 installed on the outer end of the second rotating shaft 58 to rotate counterclockwise. Since the incomplete gear 2 59 located directly behind the incomplete gear 1 57 meshes with the incomplete gear 1 57, the incomplete gear 2 59 located directly behind the incomplete gear 1 57 will first drive the incomplete gear 1 57 to rotate clockwise by 90°. After rotating 90°, the incomplete gear 1 57 will no longer rotate with the incomplete gear 2 59. At this time, the incomplete gear 1 57 drives the first electric push rod 55 and the second electromagnet 54 to drive the oil pan 1 to rotate clockwise by 90°, so that the other side can face the milling cutter 61, so that the milling cutter 61 can deburr it. The incomplete gear 2 59, located directly behind the incomplete gear 1 57, will first drive the incomplete gear 1 57 to rotate 90° clockwise. Afterwards, the first motor 510 will be shut off. Once this side is processed by the milling cutter 61, the first motor 510 will be restarted. Since multiple second shafts 58 rotate 90° counterclockwise simultaneously, starting from the incomplete gear 2 59 meshing with the incomplete gear 1 57, the second incomplete gear 2 59 will mesh with the incomplete gear 1 57 after rotating 90° counterclockwise. The third incomplete gear 2 59... The full gear 2 59 will mesh with the incomplete gear 1 57 after rotating 180° counterclockwise, and the fourth incomplete gear 2 59 will mesh with the incomplete gear 1 57 after rotating 270° counterclockwise. This will drive the incomplete gear 1 57 to rotate 90° in sequence, which in turn will drive the oil pan 1 to rotate 90° in sequence, so that the four edges of the oil pan 1 will face the milling cutter 61 for processing. After the incomplete gear 1 57 rotates a full circle, the four incomplete gears 2 59 will reset, completing one cycle, so that the next processing can begin.

[0030] During the rotation of the oil pan 1, in order to prevent the presence of the milling cutter 61 and the grinding stone 63 from obstructing it, such as... Figure 7-9 As shown, a mounting bracket 65 is fixed at the end of the second electric push rod 64 away from the grinding stone 63. The mounting bracket 65 is configured in an inverted L shape. A movable seat 66 is fixed at the top of the mounting bracket 65. A nut is fixed inside the movable seat 66. A reciprocating screw 67 is threadedly connected inside the nut. One end of the reciprocating screw 67 is movably connected to the rear wall of one of the support columns 7 through a bearing. The other end of the reciprocating screw 67 is movably connected to an extension frame 68 through a bearing. The extension frame 68 is fixed to the rear side of another support column 7. The other end of the reciprocating screw 67 passes through the extension frame 68 and is fixed with a second motor 69. The second motor 69 drives the movable seat 66 to move the mounting bracket 65 and the second electric push rod 64 back and forth along the outer wall of the reciprocating screw 67. Among them, a limit rod 610 is fixed on the rear side of the support column 7 connected to the reciprocating lead screw 67. The limit rod 610 is embedded in the side of the mounting frame 65 away from the second electric push rod 64, and is used to limit the movement direction of the mounting frame 65. Before rotating the oil pan 1, start the second motor 69, which can drive the reciprocating screw 67 to rotate. This allows the reciprocating screw 67 to drive the movable seat 66 mounted on its outer end to move the mounting bracket 65, the second electric push rod 64, the grinding stone 63, and the milling cutter 61 away from the oil pan 1, so as to avoid the presence of the milling cutter 61 and the grinding stone 63 from hindering the rotation of the oil pan 1. After the oil pan 1 rotates, the second motor 69 is started again. The second motor 69 drives the second electric push rod 64, the grinding stone 63 and the milling cutter 61 to move toward the oil pan 1 until one side of the milling cutter 61 contacts the edge of the oil pan 1, and then the second motor 69 is turned off.

[0031] In order to achieve automatic shutdown of the second motor 69, such as Figure 9 As shown, a sliding frame 611 is inserted inside the limiting rod 610. A sliding plate 612 is fixed to the top of the sliding frame 611. A tactile switch 613 for controlling the second motor 69 to close is fixed to one side of the sliding plate 612. A short plate 614 is fixed to the side of the movable seat 66 near the tactile switch 613 for contacting the tactile switch 613 to control the second motor 69 to close. Furthermore, one end of the sliding frame 611 is threaded with two limiting bolts 616. One end of the limiting bolt 616 extends into the interior of the limiting rod 610. The limiting rod 610 has multiple threaded holes 615 on the side away from the second electric push rod 64. One end of the limiting bolt 616 extends into the threaded hole 615 and is threaded together with the threaded hole 615 to fix the position of the sliding frame 611 and the sliding plate 612. By loosening the limiting bolt 616 and moving the sliding frame 611 and the sliding plate 612 along the outer wall of the limiting rod 610, the sliding plate 612 can be aligned with the edge of the oil pan 1. Then, the limiting bolt 616 can be screwed into the threaded hole 615 again to fix the position of the sliding plate 612. In this invention, the second motor 69 drives the moving seat 66 to move simultaneously, and also drives the short plate 614 to move synchronously. It is only necessary to move the position of the sliding plate 612 in advance so that it can be aligned with the edge of the oil pan 1. Then, during the movement of the short plate 614, it will gradually approach the sliding plate 612 until it contacts the tactile switch 613 on the sliding plate 612. Then, the second motor 69 is turned off by the tactile switch 613, so that the milling cutter 61 can automatically stop at the edge of the oil pan 1. This eliminates the complicated operation of manual control and further improves the automation level and processing efficiency of this invention.

[0032] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art will understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. An engine heat dissipating device provided at a lower end of an engine body, comprising an oil pan, characterized in that: The oil pan has a windward end and a leeward end. A heat dissipation chamber is provided on the bottom of the oil pan. An upper heat dissipation plate is formed on the upper part of the heat dissipation chamber, and a lower heat dissipation plate is formed on the lower plate of the heat dissipation chamber. The heat dissipation chamber penetrates the oil pan at both the windward end and the leeward end. Multiple connectors are provided in the heat dissipation chamber to connect the upper heat dissipation plate and the lower heat dissipation plate. Each connector divides the heat dissipation chamber into multiple flow channels that connect the windward end and the leeward end. At least one flow channel has a width closer to the windward end that is smaller than the width closer to the leeward end, and at least one flow channel has a height closer to the windward end that is smaller than the height closer to the leeward end. The lower end face of the oil pan has a downward protrusion on the side near the leeward end, which makes each flow channel form an S-shape. Each flow channel includes a uniform distribution section near the windward end, a diffuse distribution section near the leeward end, and a sinking section connecting the uniform distribution section and the diffuse distribution section. The sinking section is not provided with a connecting body.

2. An engine heat dissipating device according to claim 1, characterized in that: The volume difference between the flow channels in the uniform distribution section is less than 10%. The connector in the middle of the diffusion distribution section is elliptical cylindrical. The connectors in the diffusion distribution section and on both sides are arc-shaped. The number of arc-shaped connectors in the diffusion distribution section is less than the number of connectors in the uniform distribution section.

3. An engine heat dissipating device according to claim 2, characterized in that: The elliptical cylindrical connector is made of copper, while the other connectors are made of aluminum foam.

4. An engine heat dissipating device according to claim 2, characterized in that: The oil pan has multiple first heat dissipation fins arranged in a vertical direction on its peripheral surface, and multiple second heat dissipation fins arranged on its lower end surface, with each second heat dissipation fin extending from the windward end to the leeward end.

5. A process for forming an engine heat sink according to any one of claims 1 to 3, wherein Includes the following steps, The first step is to form a plate. Before stamping, the windward and leeward ends of the heat dissipation chamber are cut off and reserved. The oil pan substrate is formed by stamping. The oil pan substrate does not have an upper heat dissipation plate, thus forming the inlet and outlet of the flow channel. After stamping, the placement recesses of each connecting part are formed. The second step is to form an upper heat sink plate and weld each connector onto the upper heat sink plate. The upper heat sink plate is then placed inside the oil pan substrate, so that each connector is placed in its respective recess. Then, contact welding is used to connect the connector to the lower heat sink plate. The third step is to weld the upper heat sink plate onto the oil pan substrate; The fourth step is to use a deburring device to grind the edges of the workpiece after cutting to remove the burrs and rough edges, and then clean it to obtain the finished oil pan.

6. A process for forming an engine heat sink according to claim 5, characterized in that: The deburring equipment includes a control cabinet, a support platform fixed to the top of the control cabinet, support columns fixed to the four corners of the top of the support platform, and the same top plate fixed to the top of the four support columns. The top of the support platform is provided with a clamping and fixing assembly for clamping the oil pan. The rear side of the clamping and fixing assembly is provided with a deburring assembly for removing burrs and rough edges from the oil pan. The clamping and fixing assembly clamps the oil pan and rotates it on the top of the support platform so that the deburring assembly can grind and remove burrs and rough edges from the four edges of the oil pan.

7. The molding process of an engine cooling device according to claim 6, characterized in that: The clamping and fixing assembly includes a fixed base fixed on the top of the support platform. The top of the fixed base is movably connected to a first rotating shaft via a bearing. A first electromagnet is fixed at the top of the first rotating shaft. The first electromagnet is in contact with one side of the bottom of the oil pan. A second electromagnet is attracted to the top of the first electromagnet. The second electromagnet is connected to the bottom of the inside of the oil pan. The first electromagnet and the second electromagnet have opposite magnetic properties. The oil pan can be fixed between the first electromagnet and the second electromagnet by the attraction between the first electromagnet and the second electromagnet. The second electromagnet is provided with a first electric push rod at the top. The top of the second electromagnet is fixed to the bottom of the movable end of the first electric push rod. The top of the first electric push rod passes through the top plate and a rotating disk is fixed to the outer wall of the first electric push rod. The rotating disk passes through the top plate and is rotatably connected to the top plate. The rotating disk drives the first electric push rod to rotate on the top plate.

8. The molding process for a heat-dissipating power engine oil pan according to claim 7, characterized in that: An incomplete gear 1 is fixed to the outer end of the rotating disk. A second rotating shaft is provided around the incomplete gear 1. The bottom end of the second rotating shaft is movably connected to the top of the top plate through a bearing. An incomplete gear 2 is fixed through the outer end of each second rotating shaft. The four incomplete gear 2 are distributed in a square with the incomplete gear 1 as the center. The incomplete gear 2 located directly behind the incomplete gear 1 meshes with the incomplete gear 1. Starting from the incomplete gear 2 that meshes with the incomplete gear 1, the second incomplete gear 2 rotates 90° counterclockwise and then meshes with the incomplete gear 1. The third incomplete gear 2 rotates 90° counterclockwise and then meshes with the incomplete gear 1. The fourth incomplete gear 2 rotates 90° counterclockwise and then meshes with the incomplete gear 1. Each second rotating shaft has a pulley fixed at its outer end. The pulley is located at the top of the incomplete gear 2. A belt is provided between the pulley at the top of the first incomplete gear 2 and the pulley at the top of the fourth incomplete gear 2, between the pulley at the top of the first incomplete gear 2 and the pulley at the top of the second incomplete gear 2, and between the pulley at the top of the second incomplete gear 2 and the pulley at the top of the third incomplete gear 2, for driving the four incomplete gear 2 to rotate synchronously. A first motor is fixedly connected to the top of the second shaft that passes through the fourth incomplete gear, which is used to drive the four second shafts to rotate synchronously.

9. The molding process for a heat-dissipating power engine oil pan according to claim 8, characterized in that: The deburring assembly includes a milling cutter located on the rear side of the oil pan. The cutting face of the milling cutter contacts the rear edge of the oil pan. A grinding stone is provided on one side of the milling cutter. A second electric push rod is provided on the side of the grinding stone away from the milling cutter. The second electric push rod drives the milling cutter and the grinding stone to reciprocate along the edge of the oil pan to remove burrs and roughen the edge of the oil pan.

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