A high-strength and lightweight motorcycle engine cover and its casting process

Abstract

The present invention relates to the technical field of motorcycle engine cover production, and specifically, to a high-strength and lightweight motorcycle engine cover and its casting process, wherein a die-casting machine is used to prepare the engine cover plate body, the appearance of the engine cover plate body is processed by engine cover processing equipment and finishing equipment, and transportation equipment and a number of mechanical arms are used to cooperate with manual work to complete the transportation of the engine cover plate body. In the process of the overall structure of the grinding mechanism moving downward, the flash on the edge of the engine cover plate body can be cleaned by moving the frame body, and after the docking gear in the toggle part contacts the fixed gear plate, the grinding part can be driven to move up and down as a whole, and the burrs on the edge of the engine cover plate body are ground, thereby reducing the work intensity and improving the product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of motorcycle engine cover production, and specifically, to a high-strength and lightweight motorcycle engine cover and its casting process. Background Art

[0002] The casting of high-strength and lightweight motorcycle engine covers has achieved weight reduction of the engine cover while maintaining or enhancing its structural strength by selecting lightweight and high-strength materials such as aluminum alloy, carbon fiber, etc., and combining advanced casting processes such as vacuum die-casting technology, oxygen-filled die-casting technology, etc.

[0003] The patent with the application number CN201922479329.1 discloses an automated processing production line for motorcycle engine cases, including a manual loading and unloading area, a left cover processing area, a right cover processing area, and a finishing area. The left cover processing area and the right cover processing area are respectively located on both sides of the manual loading and unloading area. The left cover processing area includes a first robot for carrying the left cover, a first machine tool group for processing the left cover, and a first conveyor line for conveying the left cover. This production line can save multiple labors, reduce labor costs, improve the degree of automation and processing efficiency at the same time, reduce the labor intensity of workers, and ensure product quality.

[0004] In the current die-casting production process of motorcycle engine covers, due to the insufficient cooperation precision between the upper die and the lower die in the mold design, there is an excessive gap, which makes the molten metal easy to leak through these gaps during high-pressure injection, and then unnecessary flash and burrs are formed at the edge of the finished product. These defects need to be post-processed one by one by manual labor, which not only significantly increases the operation intensity of production personnel, but also restricts the improvement of the overall automation level of the production line. In addition, during the process of manually removing the flash, due to the difficulty in uniformly controlling the knocking force, the product is often damaged, affecting the final quality.

[0005] In view of this, we propose a high-strength and lightweight motorcycle engine cover and its casting process. Summary of the Invention

[0006] The purpose of the present invention is to provide a high-strength and lightweight motorcycle engine cover and its casting process to solve the problems raised in the above background art.

[0007] To achieve the above purpose, on the one hand, the present invention provides a casting process for a high-strength and lightweight motorcycle engine cover, including the following steps:

[0008] S1. First, the molten iron after smelting is sent into the interior of the die-casting machine by a robotic arm. After the die-casting machine is started, the molten iron is die-cast into the shape of the engine cover body.

[0009] S2. Then, the robot arm takes out the initially formed cover plate from the inside of the die-casting machine, places it on the conveyor belt of the transport equipment, and transports it towards the cover processing equipment;

[0010] S3. Subsequently, the operator standing beside the transport equipment places the initially formed cover plate on the top surface of the mold, and controls the telescopic cylinder to drive the grinding mechanism to press down as a whole;

[0011] S4, at the initial stage of downward movement of the grinding mechanism, the moving tooth plate contacts the structure in the transmission part, driving the rotating screw to rotate, and then the placement mechanism transports the initially formed cover plate to the bottom of the grinding mechanism;

[0012] S5. Afterwards, the pressing plate will press against the top surface of the initially formed cover plate, and the moving frame that continues to move downward will clean the flash on the edge of the cover plate;

[0013] S6. Subsequently, the mating gear in the shifting part will conflict with the fixed gear plate, and after the dial is rotated, the burrs on the edge of the cover plate body are polished by the polishing part;

[0014] S7. After finishing the cleaning of the flash and burrs, the operator controls the telescopic cylinder to drive the grinding mechanism to move upward as a whole. During the upward movement, the placement mechanism will move the processed cover plate to the outside of the grinding mechanism;

[0015] S8. Then, the operator puts the processed engine cover plate back on the top of the transport equipment, and the rear robotic arm will send the processed engine cover plate into the finishing equipment to complete the punching and painting operations of the engine cover plate, thereby completing the preparation of the engine cover plate;

[0016] In the above steps, a die-casting machine is used to prepare the cover plate, the appearance of the cover plate is processed by cover processing equipment and finishing equipment, and the cover plate is transported by transportation equipment and several mechanical arms in cooperation with manual labor;

[0017] The engine cover processing equipment includes a fixing mechanism, a grinding mechanism arranged inside the fixing mechanism, and a placing mechanism for placing the engine cover plate body;

[0018] The fixing mechanism includes a telescopic cylinder that drives the grinding mechanism to move up and down, a transmission part that moves with the movement of the internal structure of the grinding mechanism, a rotating screw that rotates itself with the movement of the transmission part, and a fixed tooth plate that contacts the internal structure of the grinding mechanism;

[0019] The grinding mechanism includes a moving part, a toggle part arranged inside the moving part near the top, and a grinding part that moves up and down as the internal structure of the toggle part moves;

[0020] ​The moving part includes a moving frame, a moving tooth plate for contacting the internal structure of the transmission part, a plurality of regularly distributed limiting telescopic rods, a jacket spring sleeved on the outer side of the limiting telescopic rods, and a pressing plate for pressing down the cover plate body;

[0021] The shifting part includes a rotating shaft, a docking gear arranged at the end of the rotating shaft for rotating after contacting with the fixed tooth plate, a rotating rod rotating with the rotation of the rotating shaft, and a dial driving the grinding part to move up and down with the rotation of the rotating rod;

[0022] The placement mechanism includes a moving platform that transports the cover plate body toward or away from the grinding mechanism as the rotating screw rotates, and a placement mold arranged above the moving platform for placing the cover plate body.

[0023] In the technical solution of the present invention, the fixing mechanism also includes a fixed bottom plate for providing a mobile platform for the placement mechanism and a fixed frame for providing a fixed platform for the telescopic cylinder. The inner frame walls at both ends of the fixed frame are provided with limited sliding grooves, and the rear end groove wall of the fixed frame is provided with a frame wall through groove for providing a moving range for the internal structure of the grinding mechanism. The rear end of the rotating screw extends to the rear side of the fixed frame, and the fixed tooth plate is clamped and fixed at the middle section of the inner wall of the fixed frame.

[0024] In the technical solution of the present invention, the transmission part includes a transmission gear rotatably connected to the rear side wall of the fixed frame, two sets of pulleys arranged in parallel up and down, and a transmission belt sleeved between the two sets of pulleys. The upper pulley rotates with the rotation of the center rod of the transmission gear, and the lower pulley drives the rotating screw to rotate through its own rotation.

[0025] In the technical solution of the present invention, the moving frame moves with the movement of the telescopic rod of the telescopic cylinder, and the outer walls at the left and right ends of the moving frame are integrally formed with limit frames slidably connected to the limit slide grooves, the moving gear plate is clamped and fixed on the rear side wall of the moving frame and meshes with the transmission gear, and a partition plate is integrally formed near the top of the inner wall of the moving frame.

[0026] In the technical solution of the present invention, one end of the limit telescopic rod is clamped on the bottom surface of the partition plate, and the other end is clamped on the top surface of the pressure plate. One end of the outer sleeve spring is connected to the bottom surface of the partition plate, and the other end is connected to the top surface of the pressure plate. The elastic force provided by the outer sleeve spring can push the pressure plate to drive the limit telescopic rod to the maximum telescopic length.

[0027] In the technical solution of the present invention, the front and rear ends of the rotating shaft are respectively rotatably connected to the inner side walls of the front and rear ends of the moving frame, the docking gear is clamped at the end position of the rotating shaft extending out of the moving frame at the rear end, and a worm is sleeved on the outer side wall of the rotating shaft to rotate therewith.​

[0028] In the technical solution of the present invention, the left and right ends of the rotating rod are rotatably connected to the inner side walls of the left and right ends of the moving frame respectively, the outer side wall of the rotating rod is sleeved with a worm wheel meshing with the worm, the dial is rotatably connected to the outer side wall of the moving frame, and a synchronous belt is sleeved between the end of the rotating rod and the convex shaft outside the dial.

[0029] In the technical solution of the present invention, the polishing part includes a movable frame slidably connected to the inner wall of the movable frame, a polishing frame for polishing the burrs on the edge of the cover plate, and a connecting strip for fixedly connecting the polishing frame and the movable frame. The outer walls at the left and right ends of the movable frame are provided with frame slide grooves for providing a moving range for the inner convex shaft of the dial. The inner size of the polishing frame is just matched with the size of the pressure plate.

[0030] In the technical solution of the present invention, the movable platform is slidably connected to the top surface of the fixed bottom plate and is threadedly connected to two rotating screws. The longitudinal section of the movable platform is a right-angle trapezoid so that the burrs of the cover plate can be discharged from the interior of the fixed frame along the slope of the top surface. The top of the movable platform is integrally formed with a mounting rod for providing a clamping point for placing the mold.

[0031] On the other hand, the present invention also provides a high-strength and lightweight motorcycle engine cover, which is made by the above-mentioned high-strength and lightweight motorcycle engine cover casting process; it includes a cover plate body, and the cover plate body includes a fixed plate body, a reinforcing ring body integrally formed at the end of the fixed plate body to ensure the overall strength of the fixed plate body, an outer cover integrally formed below the reinforcing ring body with a thickness less than the reinforcing ring body, and a plurality of reinforcing ribs regularly distributed on the top surface of the fixed plate body.

[0032] Compared with the prior art, the beneficial effects of the present invention are:

[0033] 1. In the process of the overall structure of the high-strength and lightweight motorcycle engine cover and its casting process, the flash on the edge of the engine cover plate can be cleaned by moving the frame, and after the docking gear in the toggle part contacts the fixed gear plate, the grinding part can be driven to move up and down as a whole to grind the burrs on the edge of the engine cover plate, thereby reducing the work intensity and improving the product quality.

[0034] 2. The high-strength and lightweight motorcycle engine cover and its casting process, the telescopic cylinder controls the grinding mechanism to move up and down as a whole, while the moving tooth plate in the moving part can drive the internal structure of the transmission part to move, and drive the placement mechanism to transport the cover plate body in and out of the fixed frame, while reducing the investment in additional drive equipment and further improving the automation of the overall equipment. Brief Description of the Figures

[0035] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 is a partial structural schematic diagram of the present invention;

[0037] Figure 3 is a schematic cross-sectional view of the structure of the fixing mechanism in the present invention;

[0038] Figure 4 is a schematic diagram of the structure of the fixing mechanism in the present invention;

[0039] Figure 5 is a schematic diagram of the structural disassembly of the transmission part in the present invention;

[0040] Figure 6 is a schematic diagram of the structure cutaway of the grinding mechanism in the present invention;

[0041] Figure 7 is a schematic diagram of the cross-section structure of the moving part of the present invention;

[0042] Figure 8 is a schematic diagram of the structure of the toggle part of the present invention;

[0043] Figure 9 is a schematic diagram of the structure of the grinding part in the present invention;

[0044] Figure 10 is a schematic diagram of the structure of the placement mechanism in the present invention;

[0045] Figure 11 is a schematic diagram of the structure of the cover plate body in the present invention;

[0046] Description of reference numerals:

[0047] 100, die casting machine;

[0048] 200, machine cover processing equipment; 210, fixing mechanism; 211, fixing bottom plate; 212, fixing frame; 2120, limiting slide groove; 2121, frame wall through groove; 213, telescopic cylinder; 214, transmission part; 2140, transmission gear; 2141, pulley; 2142, transmission belt; 215, rotating screw; 216, fixing tooth plate; 220, grinding mechanism; 221, moving part; 2210, moving frame; 2211, limiting frame; 2212, moving tooth plate; 2213, interval Partition; 2214, limit telescopic rod; 2215, outer jacket spring; 2216, pressure plate; 222, toggle part; 2220, rotating shaft; 2221, worm; 2222, docking gear; 2223, rotating rod; 2224, worm wheel; 2225, dial; 2226, synchronous belt; 223, polishing part; 2230, movable frame; 2231, polishing frame; 2232, connecting strip; 230, placement mechanism; 231, moving table; 232, mounting rod; 233, mold placement;

[0049] 300, finishing equipment;

[0050] 400, transportation equipment;

[0051] 500, robotic arm;

[0052] 600, cover plate; 610, fixed plate; 620, reinforcing ring; 630, outer cover; 640, reinforcing rib. Specific implementation method

[0053] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] Please refer to Figures 1 - 11 As shown, this embodiment provides a technical solution:

[0055] A high-strength and lightweight motorcycle engine cover casting process comprises the following steps:

[0056] S1. First, the molten iron is sent into the die-casting machine 100 by the robot arm 500. After the die-casting machine 100 is started, the molten iron is die-cast into the shape of the machine cover plate body 600;

[0057] S2. Next, the robot arm 500 takes out the preliminarily formed cover plate 600 from the die-casting machine 100, places it on the conveyor belt of the conveyor device 400, and transports it toward the cover processing device 200;

[0058] S3. Subsequently, the operator standing beside the transport device 400 places the preliminarily formed cover plate 600 on the top surface of the placement mold 233, and controls the telescopic cylinder 213 to drive the grinding mechanism 220 to press down as a whole;

[0059] S4, at the initial stage of the downward movement of the grinding mechanism 220, the movable tooth plate 2212 contacts the structure in the transmission part 214, thereby driving the rotating screw 215 to rotate, and then the placement mechanism 230 transports the initially formed cover plate 600 to move directly below the grinding mechanism 220;

[0060] S5. Afterwards, the pressing plate 2216 will press against the top surface of the initially formed cover plate 600, and the moving frame 2210 that continues to move downward will clean the flash on the edge of the cover plate 600;

[0061] S6. Subsequently, the docking gear 2222 in the toggle portion 222 will come into conflict with the fixed tooth plate 216, and after the dial 2225 is rotated, the burrs on the edge of the cover plate body 600 are polished by the polishing portion 223;

[0062] S7. After finishing the cleaning of the flash and burrs, the operator controls the telescopic cylinder 213 to drive the grinding mechanism 220 to move upward as a whole. During the upward movement, the placement mechanism 230 will move the processed cover plate 600 to the outside of the grinding mechanism 220;

[0063] S8. Then, the operator puts the processed cover plate 600 back on the top of the transport device 400, and the rear robotic arm 500 will send the processed cover plate 600 into the finishing device 300, and then complete the punching and painting operations of the cover plate 600, thereby completing the preparation of the cover plate 600.

[0064] In this embodiment, if Figure 1 As shown, the above steps use a die-casting machine 100 to complete the preparation of the cover plate 600, use the cover processing equipment 200 and the finishing equipment 300 to process the appearance of the cover plate 600, and use the transportation equipment 400 and a number of mechanical arms 500 to cooperate with manual work to complete the transfer of the cover plate 600;

[0065] Furthermore, the die-casting machine 100 is used to form the initial shape of the cover plate 600 with molten metal under high pressure, the cover processing equipment 200 is used to process the flash and burrs on the edge of the cover plate 600, and the finishing equipment 300 is used to perform further processing such as drilling, painting and polishing on the cover plate 600.

[0066] In this embodiment, if Figures 2 - 5As shown, the cover processing device 200 includes a fixing mechanism 210, a grinding mechanism 220 disposed inside the fixing mechanism 210, and a placement mechanism 230 for placing the cover plate body 600;

[0067] Specifically, the fixing mechanism 210 includes a telescopic cylinder 213 that drives the grinding mechanism 220 to move up and down, a transmission part 214 that moves the internal structure of the grinding mechanism 220, a rotating screw 215 that rotates itself as the transmission part 214 moves, and a fixed tooth plate 216 that contacts the internal structure of the grinding mechanism 220.

[0068] Furthermore, the fixing mechanism 210 also includes a fixing bottom plate 211 for providing a mobile platform for the placement mechanism 230 and a fixing frame 212 for providing a fixed platform for the telescopic cylinder 213. The inner frame walls at both ends of the fixing frame 212 are provided with limited sliding grooves 2120. The rear end groove wall of the fixing frame 212 is provided with a frame wall through groove 2121 for providing a moving range for the internal structure of the grinding mechanism 220. The rear end of the rotating screw 215 extends to the rear side of the fixing frame 212, and the fixing tooth plate 216 is fixed to the middle section of the inner wall of the fixing frame 212.

[0069] Furthermore, the transmission part 214 includes a transmission gear 2140 rotatably connected to the rear side wall of the fixed frame 212, two sets of pulleys 2141 arranged in parallel up and down, and a transmission belt 2142 sleeved between the two sets of pulleys 2141. The upper pulley 2141 rotates with the rotation of the center rod of the transmission gear 2140, and the lower pulley 2141 drives the rotating screw 215 to rotate through its own rotation.

[0070] Furthermore, the fixed bottom plate 211 and the fixed frame 212 are used to ensure the strength of the overall structure of the fixing mechanism 210. When the transmission gear 2140 in the transmission part 214 rotates, the pulley 2141 located above will rotate. After the power is transmitted through the transmission belt 2142, the pulley 2141 located below will be driven to rotate. After the rotating screw 215 rotates, the overall position of the placement mechanism 230 will change.

[0071] In this embodiment, if Figures 6 - 7 As shown in FIG. 1 , the grinding mechanism 220 includes a moving portion 221, a toggle portion 222 disposed inside the moving portion 221 near the top, and a grinding portion 223 that moves up and down as the internal structure of the toggle portion 222 moves;

[0072] ​​​​​Specifically, the moving part 221 includes a moving frame 2210, a moving tooth plate 2212 for contacting the internal structure of the transmission part 214, a plurality of regularly distributed limiting telescopic rods 2214, a jacket spring 2215 sleeved on the outside of the limiting telescopic rods 2214, and a pressing plate 2216 for pressing down the cover plate 600.

[0073] Furthermore, the moving frame 2210 moves with the movement of the telescopic rod of the telescopic cylinder 213. The outer walls at the left and right ends of the moving frame 2210 are integrally formed with a limit frame 2211 that is slidably connected to the limit slide groove 2120. The moving tooth plate 2212 is clamped and fixed on the rear side wall of the moving frame 2210 and meshes with the transmission gear 2140. The inner wall of the moving frame 2210 is integrally formed with a partition plate 2213 near the top.

[0074] Furthermore, one end of the limited telescopic rod 2214 is clamped on the bottom surface of the partition plate 2213, and the other end is clamped on the top surface of the pressure plate 2216. One end of the outer sleeve spring 2215 is connected to the bottom surface of the partition plate 2213, and the other end is connected to the top surface of the pressure plate 2216. The elastic force provided by the outer sleeve spring 2215 can push the pressure plate 2216 to drive the limited telescopic rod 2214 to the maximum telescopic length.

[0075] Furthermore, the movable frame 2210 uses the strength of its own structure to clean the flash on the edge of the cover plate 600 by pressing down. The limit frame 2211 is used to limit the range of movement of the movable frame 2210 inside the fixed frame 212. The movable tooth plate 2212 is used to drive the transmission gear 2140 to rotate after contacting it. The spacer plate 2213 is used to provide a rotation range for the structure in the toggle part 222. Under the elastic force of the outer jacket spring 2215, the pressing plate 2216 presses against the top surface of the cover plate 600 when the movable frame 2210 continues to move downward. At the same time, through its own adaptability to the size of the cover plate 600, the movable frame 2210 is prevented from causing damage to the main body of the cover plate 600 when cleaning the flash.

[0076] In this embodiment, if Figure 8 As shown in the figure, the toggle part 222 includes a rotating shaft 2220, a docking gear 2222 disposed at the end of the rotating shaft 2220 for contacting with the fixed tooth plate 216 to rotate, a rotating rod 2223 that rotates as the rotating shaft 2220 rotates, and a dial 2225 that drives the grinding part 223 to move up and down as the rotating rod 2223 rotates;

[0077] ​​Specifically, the front and rear ends of the rotating shaft 2220 are respectively rotatably connected to the inner side walls of the front and rear ends of the moving frame 2210. The docking gear 2222 is clamped at the end position where the rear end of the rotating shaft 2220 extends out of the moving frame 2210. A worm 2221 that rotates therewith is sleeved on the outer side wall of the rotating shaft 2220.

[0078] Furthermore, the left and right ends of the rotating rod 2223 are respectively rotatably connected to the inner side walls of the left and right ends of the moving frame 2210. A worm gear 2224 that meshes with the worm 2221 is sleeved on the outer side wall of the rotating rod 2223. The dial 2225 is rotatably connected to the outer side wall of the moving frame 2210. A synchronous belt 2226 is sleeved between the end of the rotating rod 2223 and the convex shaft on the outer side of the dial 2225.

[0079] Furthermore, after the docking gear 2222 comes into contact with the fixed toothed plate 216 and rotates, it drives the rotating shaft 2220 together with the worm 2221 to rotate. The worm 2221 then comes into contact with the worm gear 2224, thereby driving the rotating rod 2223 to rotate. After the power is transmitted through the synchronous belts 2226 at both ends, the dial 2225 is driven to rotate.

[0080] In this embodiment, as Figure 9 shown, the grinding part 223 includes a movable frame 2230 slidably connected to the inner side wall of the moving frame 2210, a grinding frame 2231 for grinding the burrs on the edge of the machine cover body 600, and a connecting strip 2232 for fixedly connecting the grinding frame 2231 and the movable frame 2230. Frame body chutes for providing a moving range for the inner convex shaft of the dial 2225 are provided on the outer side walls of the left and right ends of the movable frame 2230. The internal dimensions of the grinding frame 2231 are exactly adapted to the dimensions of the pressing plate 2216;

[0081] Furthermore, after the dial 2225 rotates, the inner convex shaft of the dial 2225 continuously moves in the frame body chute of the movable frame 2230, driving the movable frame 2230 together with the grinding frame 2231 to move up and down, so as to grind the burrs on the edge of the machine cover body 600.

[0082] In this embodiment, as Figure 10 shown, the placing mechanism 230 includes a moving table 231 that transports the machine cover body 600 closer to or farther away from the grinding mechanism 220 as the rotating lead screw 215 rotates, and a placing mold 233 provided above the moving table 231 for placing the machine cover body 600;

[0083] Specifically, the mobile station 231 is slidably connected to the top surface of the fixed base plate 211 and is threadedly connected to the two rotating lead screws 215. The longitudinal section of the mobile station 231 is in the shape of a right trapezoid, so that the burrs on the flange of the machine cover body 600 can be discharged from the inside of the fixed frame body 212 along the slope of the top surface. An installation rod 232 for providing a clamping point for placing the mold 233 is integrally formed on the top of the mobile station 231.

[0084] Further, after the rotating lead screw 215 rotates, the position of the mobile station 231 will change on the top surface of the fixed base plate 211. The installation rod 232 is used to facilitate the replacement of different placement molds 233. The placement mold 233 is adapted to the model of the machine cover body 600, and at the same time, it is also convenient for the operator to position.

[0085] The present invention also provides a high-strength and lightweight motorcycle engine cover, which is made by using the above-mentioned high-strength and lightweight motorcycle engine cover casting process. It includes a machine cover body 600, and the machine cover body 600 includes a fixed plate body 610, a reinforcing ring body 620 integrally formed at the end of the fixed plate body 610 to ensure the overall strength of the fixed plate body 610, an outer cover 630 integrally formed below the reinforcing ring body 620 and having a thickness less than that of the reinforcing ring body 620, and a plurality of reinforcing ribs 640 regularly distributed on the top surface of the fixed plate body 610;

[0086] Further, the fixed plate body 610 and the outer cover 630 are designed with reduced thickness, so that the overall weight of the machine cover body 600 is reduced. At the same time, the reinforcing ring body 620 and a plurality of regularly and densely distributed reinforcing ribs 640 are used to ensure the strength of the overall structure of the machine cover body 600.

[0087] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and exemplification. These descriptions are not intended to limit the present invention to the precise forms disclosed, and obviously, many changes and variations are possible in light of the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical applications, so that those skilled in the art can implement and utilize various different exemplary embodiments of the present invention, as well as various different selections and changes. The scope of the present invention is intended to be defined by the specification and its equivalents.

Claims

1. A high-strength and lightweight motorcycle engine cover casting process, characterized in that: The following steps are involved: S1. First, the molten iron is sent into the die-casting machine by a mechanical arm. After the die-casting machine is started, the molten iron is die-cast into the shape of the machine cover plate; S2. Then, the robot arm takes out the initially formed cover plate from the inside of the die-casting machine, places it on the conveyor belt of the conveyor equipment, and transports it toward the cover processing equipment; S3. Subsequently, the operator standing beside the transport equipment places the initially formed cover plate on the top surface of the placement mold, and controls the telescopic cylinder to drive the grinding mechanism to press down as a whole; S4, at the initial stage of downward movement of the grinding mechanism, the movable tooth plate contacts the structure in the transmission part, and drives the rotating screw to rotate, thereby allowing the placement mechanism to transport the initially formed cover plate to move directly below the grinding mechanism; S5, after that, the pressing plate will press against the top surface of the initially formed cover plate body, and the moving frame body that continues to move downward will clean the flash on the edge of the cover plate body; S6. Subsequently, the docking gear in the shifting part will conflict with the fixed gear plate, and after the dial is rotated, the burrs on the edge of the cover plate body are polished by the polishing part; S7. After the flash and burrs are cleaned, the operator controls the telescopic cylinder to drive the grinding mechanism to move upward as a whole. During the upward movement, the placement mechanism moves the processed cover plate to the outside of the grinding mechanism. S8. Then, the operator puts the processed cover plate back on the top of the transport equipment, and the rear robotic arm sends the processed cover plate into the finishing equipment to complete the punching and painting operations of the cover plate, thereby completing the preparation of the cover plate; In the above steps, the die-casting machine is used to prepare the cover plate, the cover processing equipment and finishing equipment are used to process the appearance of the cover plate, and the transport equipment and several mechanical arms are used to cooperate with manual work to complete the transfer of the cover plate; The cover processing equipment includes a fixing mechanism, a grinding mechanism arranged inside the fixing mechanism, and a placing mechanism for placing the cover plate body; The fixing mechanism includes a telescopic cylinder that drives the grinding mechanism to move up and down, a transmission part that moves with the movement of the internal structure of the grinding mechanism, a rotating screw that rotates itself with the movement of the transmission part, and a fixed tooth plate that contacts the internal structure of the grinding mechanism; The grinding mechanism comprises a moving part, a toggle part arranged inside the moving part near the top, and a grinding part that moves up and down as the internal structure of the toggle part moves; The moving part includes a moving frame, a moving tooth plate for contacting the internal structure of the transmission part, a plurality of regularly distributed limit telescopic rods, a jacket spring sleeved on the outer side of the limit telescopic rods, and a pressing plate for pressing down the cover plate body; The shifting part includes a rotating shaft, a docking gear arranged at the end of the rotating shaft and used to rotate after contacting with the fixed tooth plate, a rotating rod rotating as the rotating shaft rotates, and a dial driving the grinding part to move up and down as the rotating rod rotates; The placement mechanism comprises a moving platform that transports the cover plate body toward or away from the grinding mechanism as the rotating screw rotates, and a placement mold that is arranged above the moving platform and is used to place the cover plate body.

2. The high-strength and lightweight motorcycle engine cover casting process according to claim 1 is characterized in that: The fixing mechanism also includes a fixed bottom plate for providing a mobile platform for the placing mechanism and a fixed frame for providing a fixed platform for the telescopic cylinder. Limiting slide grooves are provided on the inner frame walls at both ends of the fixed frame. A frame wall through groove for providing a moving range for the internal structure of the grinding mechanism is provided on the rear end groove wall of the fixed frame. The rear end of the rotating screw extends to the rear side of the fixed frame, and the fixed tooth plate is clamped and fixed at the middle section of the inner wall of the fixed frame.

3. The high-strength and lightweight motorcycle engine cover casting process according to claim 2 is characterized in that: The transmission part includes a transmission gear rotatably connected to the rear side wall of the fixed frame, two sets of pulleys arranged in parallel up and down, and a transmission belt sleeved between the two sets of pulleys. The upper pulley rotates with the rotation of the center rod of the transmission gear, and the lower pulley drives the rotating screw to rotate through its own rotation.

4. The high-strength and lightweight motorcycle engine cover casting process according to claim 3 is characterized in that: The moving frame moves with the movement of the telescopic rod of the telescopic cylinder. The outer walls at the left and right ends of the moving frame are integrally formed with limit frames slidably connected to the limit sliding grooves. The moving gear plate is clamped and fixed on the rear side wall of the moving frame and meshes with the transmission gear. A partition plate is integrally formed at the inner side wall of the moving frame near the top.

5. The high-strength and lightweight motorcycle engine cover casting process according to claim 4 is characterized in that: One end of the limiting telescopic rod is clamped on the bottom surface of the spacer plate, and the other end is clamped on the top surface of the pressure plate. One end of the outer sleeve spring is connected to the bottom surface of the spacer plate, and the other end is connected to the top surface of the pressure plate. The elastic force provided by the outer sleeve spring can push the pressure plate to drive the limiting telescopic rod to the maximum telescopic length.

6. The high-strength and lightweight motorcycle engine cover casting process according to claim 5, characterized in that: The front and rear ends of the rotating shaft are respectively rotatably connected to the inner side walls of the front and rear ends of the moving frame, the docking gear is clamped at the end position of the rear end of the rotating shaft extending out of the moving frame, and a worm that rotates therewith is sleeved on the outer side wall of the rotating shaft; the left and right ends of the rotating rod are respectively rotatably connected to the inner side walls of the left and right ends of the moving frame, a worm wheel meshing with the worm is sleeved on the outer side wall of the rotating rod, the dial is rotatably connected to the outer side wall of the moving frame, and a synchronous belt is sleeved between the end of the rotating rod and the convex shaft outside the dial.

7. The high-strength and lightweight motorcycle engine cover casting process according to claim 6 is characterized in that: The polishing part includes a movable frame slidably connected to the inner wall of the movable frame, a polishing frame for polishing burrs on the edge of the cover plate, and a connecting strip for fixedly connecting the polishing frame and the movable frame. The outer walls at the left and right ends of the movable frame are provided with frame slide grooves for providing a moving range for the inner convex shaft of the dial. The internal size of the polishing frame is just matched with the size of the pressure plate.

8. The high-strength and lightweight motorcycle engine cover casting process according to claim 7 is characterized in that: The movable platform is slidably connected to the top surface of the fixed base plate and is threadedly connected to two rotating screws. The longitudinal section of the movable platform is a right-angled trapezoid so that the burrs on the edge of the cover plate can be discharged from the interior of the fixed frame along the slope of the top surface. A mounting rod is integrally formed on the top of the movable platform to provide a card connection point for placing the mold.

9. A high-strength and lightweight motorcycle engine cover, manufactured by the high-strength and lightweight motorcycle engine cover casting process according to claim 8, comprising a cover plate body, characterized in that: The machine cover plate body includes a fixed plate body, a reinforcing ring body integrally formed at the end of the fixed plate body to ensure the overall strength of the fixed plate body, an outer sleeve cover integrally formed below the reinforcing ring body and having a thickness smaller than the reinforcing ring body, and a plurality of reinforcing ribs regularly distributed on the top surface of the fixed plate body.

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