Press-in device for bearing, chain wheel and gear of crankshaft

Abstract

The invention provides a press-in device for a bearing, a chain wheel and a gear of a crankshaft. The press-in device comprises a rack, a first feeding assembly, a second feeding assembly, a third feeding assembly, a fourth feeding assembly, a fifth feeding assembly and a detection assembly. A stirring assembly, a bearing press-fitting assembly, a chain wheel press-fitting assembly, a gear press-fitting assembly and a control system are arranged on the rack, and the control system is connected with the first feeding assembly, the second feeding assembly, the third feeding assembly, the fourth feeding assembly, the fifth feeding assembly, the detection assembly, the stirring assembly, the bearing press-fitting assembly, the chain wheel press-fitting assembly and the gear press-fitting assembly. Automatic press fitting of the crankshaft bearing, the chain wheel and the gear is achieved, and precision and efficiency are high.

Description

Technical Field

[0001] This invention belongs to the field of engine technology, and particularly relates to a pressing device for bearings, sprockets and gears for crankshafts. Background Technology

[0002] The crankshaft is a key transmission component in an engine. When the engine is running, the piston reciprocates within the cylinder, transmitting force to the crankshaft's connecting rod journals via the connecting rod. This causes the crankshaft to rotate around the main journals, converting the piston's reciprocating motion into rotational motion to provide power to the vehicle. The engine's combined crankshaft is formed by pressing together the left and right half-crankshafts, crank pins, and connecting rods. Needle roller bearings are mounted on the main journals of both half-shafts to support the crankshaft on the crankcase. The flywheel, magneto, and clutch drive gear are respectively mounted at both ends of the crankshaft.

[0003] Currently, the pressing of bearings, sprockets, and gears for crankshafts typically involves manually loading the materials, placing them in the correct pressing position, and calibrating the angle. Then, a special press head is replaced on a hydraulic or pneumatic cylinder, and the pressing is completed using the hydraulic or pneumatic cylinder. Manual loading and alignment are time-consuming, labor-intensive, and costly. In mass production, worker fatigue can easily lead to increased product defect rates, resulting in cost losses, defective products, and other issues. Consequently, the pressing efficiency of bearings, sprockets, and gears is relatively low. Summary of the Invention

[0004] The purpose of this invention is to provide a pressing device for crankshaft bearings, sprockets and gears, which realizes automatic pressing of crankshaft bearings, sprockets and gears with high precision and efficiency.

[0005] This invention is achieved through the following technical solution: A pressing device for bearings, sprockets and gears for crankshafts includes a frame, a first feeding assembly, a second feeding assembly, a third feeding assembly, a fourth feeding assembly, a fifth feeding assembly and a detection assembly; The frame is equipped with a toggle assembly, a bearing pressing assembly, a sprocket pressing assembly, a gear pressing assembly, and a control system. The control system is connected to the first feeding assembly, the second feeding assembly, the third feeding assembly, the fourth feeding assembly, the fifth feeding assembly, the detection assembly, the toggle assembly, the bearing pressing assembly, the sprocket pressing assembly, and the gear pressing assembly, respectively. The actuating assembly is used to move the connecting rod on the crankshaft to a specific position; The detection component is used to check whether the sprocket pressing is qualified; The first feeding assembly is used to deliver the crankshaft to the bearing press-fitting station; The second feeding assembly is used to feed the bearings in a specific orientation to the bearing station of the bearing press assembly. The bearing press-fit assembly is used to press-fit the bearings at the bearing press-fit station onto the crankshaft at the bearing press-fit station; The third feeding assembly is used to feed the crankshaft after the bearing is pressed to the actuation assembly, or to feed the crankshaft on the actuation assembly to the sprocket pressing station, or to feed the crankshaft after the sprocket is pressed to the testing assembly. The fourth feeding assembly is used to feed the sprocket to the sprocket pressing station in a specific posture, or to feed the gear to the gear pressing station; The sprocket press-fit assembly is used to press the sprockets at the sprocket press-fit station onto the crankshaft; The fifth feeding assembly is used to feed the crankshaft on the testing assembly to the gear pressing station or to the output station; The gear press-fit assembly is used to press gears from the gear press-fit station onto the crankshaft.

[0006] Furthermore, the first feeding assembly includes a first robotic arm, a first moving assembly, and a first crankshaft positioning mechanism; the second feeding assembly includes a second robotic arm, a bearing feeding mechanism, and a bearing posture mechanism. The first moving assembly is mounted on the frame and connected to the first crankshaft positioning mechanism, used to deliver the first crankshaft positioning mechanism to the first loading station and the bearing pressing station. The first crankshaft positioning assembly is used to place and position the crankshaft. The first robotic arm is mounted on one side of the frame, used to deliver the crankshaft to the first crankshaft positioning mechanism located at the first loading station. The bearing feeding mechanism is mounted on one side of the frame, used to deliver the bearing to the bearing handling station. The bearing posture mechanism is mounted on the bearing pressing assembly, used to identify the bearing posture. The second robotic arm is mounted on the frame, used to deliver the bearing from the bearing handling station to the bearing posture mechanism for posture identification, and then deliver the bearing to the bearing station of the bearing pressing assembly in a specific posture.

[0007] Furthermore, the first crankshaft positioning mechanism includes a support, a first crankshaft positioning plate mounted on the support, a clamping structure mounted on the first crankshaft positioning plate for fixing or loosening the crankshaft, and a first mounting plate mounted on the first crankshaft positioning plate. The clamping structure includes two telescopic members located on both sides of the first crankshaft positioning plate and respectively mounted on the support. The telescopic ends of the telescopic members are provided with first clamping chucks. The first mounting plate has two guide grooves arranged radially along the crankshaft, with the groove openings facing the crankshaft. A second clamping chuck is slidably mounted in the guide grooves. A first threaded hole is provided on the side of the guide groove away from the groove opening. An adjusting bolt is threadedly connected to the first threaded hole, and the adjusting bolt is connected to the second clamping chuck.

[0008] Furthermore, the bearing press assembly includes a first servo press-fit cylinder, a pressure plate, a bearing housing, and a fixing mechanism. The telescopic end of the first servo press-fit cylinder is connected to the pressure plate. The bearing housing is located at the bottom of the pressure plate, and the fixing mechanism is located on the pressure plate for fixing the bearing to the bearing housing.

[0009] Furthermore, the third feeding assembly includes a third robotic arm, a second moving mechanism, and a second crankshaft positioning mechanism; the fourth feeding assembly includes a fourth robotic arm, a sprocket attitude mechanism, a sprocket feeding mechanism, and a gear feeding mechanism. The second moving mechanism is mounted on the frame and connected to the second crankshaft positioning mechanism, used to move the second crankshaft positioning mechanism to the second loading station and the sprocket pressing station. The second crankshaft positioning mechanism is used to place and position the crankshaft. The third robotic arm is mounted on one side of the frame and used to move the crankshaft after the bearing is pressed to the actuation assembly, or to move the crankshaft on the actuation assembly to the location at the second loading station. The second crankshaft positioning mechanism, or the crankshaft located on the second crankshaft positioning mechanism at the second loading station, is used to send the crankshaft to the detection assembly. The sprocket feeding mechanism is set on one side of the frame and is used to send the sprocket to the sprocket handling station. The gear feeding mechanism is used to send the gear to the gear handling station. The sprocket attitude mechanism is set on the sprocket pressing assembly and is used to identify the sprocket attitude. The fourth robot is set on the frame and is used to send the sprocket at the sprocket handling station to the sprocket attitude mechanism for attitude identification, and then send the sprocket to the sprocket pressing station in a specific attitude, or to send the gear at the gear handling station to the gear pressing station.

[0010] Furthermore, the fifth feeding assembly includes a fifth robotic arm, a third moving mechanism, and a third crankshaft positioning mechanism. The third moving mechanism is mounted on the frame and connected to the third crankshaft positioning mechanism, and is used to feed the third crankshaft positioning mechanism to the third loading station or to the gear pressing station. The fifth robotic arm is mounted on one side of the frame and is used to feed the crankshaft on the detection assembly to the third crankshaft positioning mechanism located at the third loading station, or to feed the crankshaft on the detection assembly to the output station.

[0011] Furthermore, the second moving mechanism is provided with a first carrying plate, and two first guide posts are spaced apart on the first carrying plate. The second crankshaft positioning mechanism is slidably mounted on the two first guide posts. A first spring is sleeved on the first guide post. The first spring is connected to the second crankshaft positioning mechanism and the first carrying plate respectively. The first carrying plate is provided with a sprocket seat for placing and positioning sprockets. The third moving mechanism is provided with a second carrying plate, and two second guide posts are spaced apart on the second carrying plate. The third crankshaft positioning mechanism is slidably mounted on the two second guide posts. A second spring is sleeved on the second guide post. The second spring is connected to the third crankshaft positioning mechanism and the second carrying plate respectively. The second carrying plate is provided with a gear seat for placing and positioning gears.

[0012] Furthermore, the second crankshaft positioning mechanism includes a second crankshaft positioning plate and a push cylinder disposed on one side of the second crankshaft positioning plate. The two ends of the second crankshaft positioning plate are respectively slidably disposed on two first guide pillars. A clamping plate is provided on the telescopic end of the push cylinder. The clamping plate is provided with a groove that fits with the crankshaft clearance. The structure of the third crankshaft positioning mechanism is the same as that of the second crankshaft positioning mechanism. The two ends of the second crankshaft positioning plate of the third crankshaft positioning mechanism are respectively slidably disposed on two second guide pillars.

[0013] Furthermore, the actuation assembly includes a support platform, a limiting block, a rotating mechanism, a rotating rod, and a lever. The support platform is mounted on the frame, the limiting block is mounted on the support platform, and the limiting block is provided with a connecting rod limiting groove. A second crankshaft positioning plate is provided on one side of the support platform. The rotating mechanism is located below the second crankshaft positioning plate and mounted on the support platform. One end of the rotating rod is connected to the rotating mechanism, and the other end is perpendicularly connected to the lever.

[0014] Furthermore, the inspection assembly includes a first crankshaft conveying mechanism, a fourth crankshaft positioning plate, and a vision inspection mechanism. The vision inspection mechanism is located on one side of the frame, and the first crankshaft conveying mechanism is located on one side of the frame and connected to the fourth crankshaft positioning plate, for conveying the fourth crankshaft positioning plate to the area below the vision camera.

[0015] Compared with the prior art, the beneficial effects of the present invention are: it can realize the automatic feeding of crankshaft, bearing, sprocket and gear, and make the bearing, sprocket and gear press-fit onto the crankshaft in sequence, realize the automated completion of the press-fitting of bearing, sprocket and gear on crankshaft, which is simple to operate, firm, accurate and efficient, and has good quality consistency in large-scale production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pressing device for bearings, sprockets, and gears of a crankshaft according to the present invention; Figure 2 This is a top view of the pressing device for bearings, sprockets, and gears of a crankshaft according to the present invention; Figure 3 This is a front view of the pressing device for bearings, sprockets, and gears of a crankshaft according to the present invention; Figure 4 for Figure 1 Enlarged schematic diagram of part A; Figure 5 This is a schematic diagram of the actuating assembly in the pressing device for bearings, sprockets, and gears of a crankshaft according to the present invention; Figure 6 for Figure 1 Enlarged diagram of part B; Figure 7 for Figure 3 Enlarged schematic diagram of part C; Figure 8 for Figure 3 Enlarged schematic diagram of part D.

[0017] In the diagram, 10-frame, 20-first feeding assembly, 30-second feeding assembly, 40-third feeding assembly, 50-fourth feeding assembly, 60-fifth feeding assembly, 70-detection assembly, 80-actuating assembly, 90-bearing press-fit assembly, 100-sprocket press-fit assembly, 110-gear press-fit assembly, 120-control system, 130-output assembly; 21-First robotic arm, 22-First moving component, 23-First crankshaft positioning mechanism, 231-Support, 232-First crankshaft positioning plate, 233-First mounting plate, 234-Telescopic component, 235-First clamping chuck, 236-Second clamping chuck, 237-Adjusting bolt; 31-Second robotic arm, 32-Bearing feeding mechanism, 33-Bearing posture mechanism; 41-Third robotic arm, 42-Second moving mechanism, 43-Second crankshaft positioning mechanism, 431-Second crankshaft positioning plate, 432-Push cylinder, 433-Clamping plate, 44-First carrying plate, 45-First guide column, 46-First spring, 47-Sprocket seat; 51-Fourth robotic arm, 52-Sprocket attitude mechanism, 53-Sprocket feeding mechanism, 54-Gear feeding mechanism; 61-Fifth robotic arm, 62-Third moving mechanism, 63-Third crankshaft positioning mechanism, 64-Second carrying plate, 65-Second guide column, 66-Second spring, 67-Gear seat; 71-First crankshaft conveying mechanism; 72-Fourth crankshaft positioning plate; 73-Vision inspection mechanism; 81-Support platform, 82-Limit block, 83-Rotating mechanism, 84-Rotating rod, 85-Pulling rod, 86-Limiting groove; 91-First servo press-in electric cylinder, 92-First pressure plate, 93-Bearing seat, 94-Fixing mechanism, 941-Second mounting plate, 942-Fixing cylinder, 943-Bearing support plate; 101-Second servo press-in electric cylinder, 102-Second pressure plate, 103-Pressure head, 104-Support base, 105-Guide rod; 131 - Second crankshaft conveying mechanism, 132 - Fifth crankshaft positioning plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed when in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0023] Please see Figure 1 , Figure 2 and Figure 3 , Figure 1This is a schematic diagram of the pressing device for bearings, sprockets, and gears of a crankshaft according to the present invention. Figure 2 This is a top view of the pressing device for bearings, sprockets, and gears of a crankshaft according to the present invention. Figure 3 This is a front view of the pressing device for bearings, sprockets, and gears of a crankshaft according to the present invention. The pressing device for bearings, sprockets, and gears of a crankshaft includes a frame 10, a first feeding assembly 20, a second feeding assembly 30, a third feeding assembly 40, a fourth feeding assembly 50, a fifth feeding assembly 60, and a detection assembly 70. The frame 10 is equipped with a shifting assembly 80, a bearing pressing assembly 90, a sprocket pressing assembly 100, a gear pressing assembly 110, and a control system 120. The control system 120 is connected to the first feeding assembly 20, the second feeding assembly 30, the third feeding assembly 40, the fourth feeding assembly 50, the fifth feeding assembly 60, and a detection assembly 70. The feeding assembly 40, the fourth feeding assembly 50, the fifth feeding assembly 60, the detection assembly 70, the actuating assembly 80, the bearing pressing assembly 90, the sprocket pressing assembly 100, and the gear pressing assembly 110 are connected to control the operation of the first feeding assembly 20, the second feeding assembly 30, the third feeding assembly 40, the fourth feeding assembly 50, the fifth feeding assembly 60, the detection assembly 70, the actuating assembly 80, the bearing pressing assembly 90, the sprocket pressing assembly 100, and the gear pressing assembly 110.

[0024] The first feeding assembly 20 is used to feed the crankshaft to the bearing press-fitting station; the second feeding assembly 30 is used to feed the bearing in a specific posture to the bearing press-fitting assembly 90, and the bearing press-fitting assembly 90 is used to press the bearing at the bearing press-fitting station onto the crankshaft at the bearing press-fitting station. In one embodiment, the first feeding assembly 20 includes a first robotic arm 21, a first moving assembly 22, and a first crankshaft positioning mechanism 23. The second feeding assembly 30 includes a second robotic arm 31, a bearing feeding mechanism 32, and a bearing posture mechanism 33. The first moving assembly 22 is mounted on the frame 10 and connected to the first crankshaft positioning mechanism 23, and is used to feed the first crankshaft positioning mechanism 23 to the first loading station and the bearing pressing station. The first crankshaft positioning assembly is used to place and position the crankshaft. The first robotic arm 21 is mounted on one side of the frame 10 and is used to feed the crankshaft to the first crankshaft positioning mechanism 23 located at the first loading station. The bearing feeding mechanism 32 is mounted on one side of the frame 10 and is used to feed the bearing to the bearing handling station. The bearing posture mechanism 33 is mounted on the bearing pressing assembly 90 and is used to identify the bearing posture. The second robotic arm 31 is mounted on the frame 10 and is used to feed the bearing at the bearing handling station to the bearing posture mechanism 33 for visual identification, and then feed the bearing to the bearing station of the bearing pressing assembly 90 in a specific posture.

[0025] During bearing press-fitting, the first moving mechanism sends the first crankshaft positioning mechanism 23 to the first loading station to wait. Then, the first robot arm 21 places the assembled semi-finished crankshaft onto the first crankshaft positioning mechanism 23, and the first moving mechanism then sends the first crankshaft positioning mechanism 23 with the crankshaft to the bearing press-fitting station. During this process, the bearing feeding mechanism 32 sends the bearing to the bearing handling station, and the second robot arm 31 sends the bearing from the bearing handling station to the bearing posture mechanism 33. The bearing posture mechanism 33 identifies the bearing's posture. The bearing posture mechanism 33 can employ visual inspection, mechanical inspection, or electronic inspection. In this embodiment, visual inspection is used, specifically by taking a photograph of the bearing through the bearing posture mechanism 33, and then the control system 120 analyzes the photograph to determine the bearing posture and the angle that needs to be adjusted. The bearing feeding mechanism 32 is an existing product, generally including several guide cylinders for storing bearings, and a cylinder is installed below the guide cylinders to push the bearing that falls from the guide cylinders to the target position. The bearing feeding mechanism 32 can be purchased directly from the market. Then, the second robotic arm 31 delivers the bearing in a specific posture to the bearing station of the bearing press assembly 90, so that the bearing is adapted to the press angle of the crankshaft located at the bearing press assembly station. Finally, the bearing press assembly 90 is controlled to press the bearing at the bearing station onto the crankshaft of the first crankshaft positioning mechanism 23, completing the automated assembly of the crankshaft bearing. In one embodiment, the bearing posture mechanism 33 includes a camera for photographing the bearing and a light source for supplementary lighting.

[0026] Please refer to the following: Figure 4 , Figure 4 for Figure 1A magnified schematic diagram of part A. In one embodiment, the first crankshaft positioning mechanism 23 includes a support 231, a first crankshaft positioning plate 232 disposed on the support 231, a clamping structure disposed on the first crankshaft positioning plate 232 for fixing or loosening the crankshaft, and a first mounting plate 233 disposed on the first crankshaft positioning plate 232. The clamping structure includes two telescopic members 234, which are located on both sides of the first crankshaft positioning plate 232 and are respectively disposed on the support 231. The telescopic ends of the telescopic members 234 are provided with first clamping chucks 235. The first mounting plate 233 has two guide grooves arranged radially along the crankshaft, with the groove openings facing the crankshaft. A second clamping chuck 236 is slidably disposed in the guide grooves. A first threaded hole is provided on the side of the guide groove away from the groove opening. An adjusting bolt 237 is threadedly connected to the first threaded hole, and the adjusting bolt 237 is connected to the second clamping chuck 236. The first crankshaft positioning plate 232 is provided with a first placement groove for placing the crankshaft. During operation, the first robotic arm 21 places the crankshaft against the first placement groove of the first crankshaft positioning plate 232, making the crankshaft vertically positioned. Then, the adjusting bolt 237 is rotated to control the length of the second clamping chuck 236 extending out of the guide groove, so that the second clamping chuck 236 contacts the crankshaft. This allows the first crankshaft positioning mechanism 23 to be applicable to fixing crankshafts of different specifications. The telescopic joint 234 can be a cylinder, hydraulic cylinder, or electric cylinder. In one embodiment, an adjusting nut is provided at the position of the adjusting bolt 237 within the guide groove. After the position of the second clamping chuck 236 is adjusted, the adjusting nut is rotated so that the adjusting nut abuts against the guide groove and is fixed to the adjusting bolt 237. Then, by extending the telescopic joint 234, the two first clamping chucks 235 fix the crankshaft on the first crankshaft positioning plate 232, preventing the crankshaft from moving. After pressing is completed, the crankshaft can be removed from the first crankshaft positioning plate 232 by retracting the telescopic component 234 to loosen it.

[0027] In one embodiment, the first crankshaft positioning mechanism 23 further includes a guide bolt. The second clamping chuck 236 has a first elongated hole, and the bottom of the guide groove has a second threaded hole. The guide bolt passes through the first elongated hole and is threaded into the second threaded hole. The upper part of the first elongated hole has a second elongated hole for accommodating the head of the guide bolt. By cooperating with the first and second elongated holes, the movement direction of the second clamping chuck 236 is restricted, ensuring that the second clamping chuck 236 moves radially along the crankshaft.

[0028] Please refer to the following: Figure 6 , Figure 6 for Figure 1A magnified schematic diagram of part B is shown. In one embodiment, the bearing press-fit assembly 90 includes a first servo press-fit cylinder 91, a first pressure plate 92, a bearing seat 93, and a fixing mechanism 94. The telescopic end of the first servo press-fit cylinder 91 is connected to the first pressure plate 92. The bearing seat 93 is located at the bottom of the first pressure plate 92, and the fixing mechanism 94 is located on the first pressure plate 92 for fixing the bearing to the bearing seat 93. The bearing seat 93 is provided with a second placement groove for placing the bearing, which is the bearing station of the press-fit assembly. After the bearing is placed in the bearing seat 93, it is fixed by the fixing mechanism 94 to prevent the bearing from falling off the bearing seat 93. By using the first servo press-fit cylinder 91, digital monitoring can be performed during the press-fit process, accurately outputting the press-fit torque and controlling the press-fit distance to achieve the required process accuracy. Furthermore, a first display screen can be set on the control system 120 to display and output the press-fit torque and press-fit distance during the bearing press-fit process. In one embodiment, the fixing mechanism 94 includes a second mounting plate 941, a fixing cylinder 942, and a bearing support plate 943. The second mounting plate 941 is disposed on the first pressure plate 92, the fixing cylinder 942 is disposed on the second mounting plate 941, and the bearing support plate 943 is disposed on the telescopic end of the fixing cylinder 942 for abutting against the bottom of the bearing. By extending the fixing cylinder 942, the bearing support plate 943 is moved to the bottom of the bearing seat 93 and abuts against the bottom of the bearing, thereby fixing the bearing on the bearing seat 93.

[0029] Please refer to the following: Figure 5 , Figure 5This is a schematic diagram of the actuating assembly in the pressing device for bearings, sprockets, and gears of a crankshaft according to the present invention. The third feeding assembly 40 is used to feed the crankshaft after the bearing is pressed to the actuating assembly 80, or to feed the crankshaft on the actuating assembly 80 to the sprocket pressing station, or to feed the crankshaft after the sprocket is pressed to the detection assembly 70; the fourth feeding assembly 50 is used to feed the sprocket to the sprocket pressing station in a specific posture, or to feed the gear to the gear pressing station; the actuating assembly 80 is used to move the connecting rod on the crankshaft to a specific position, fixing the relative position of the connecting rod and the crankshaft, in preparation for the subsequent pressing of the sprocket. In one embodiment, the actuating assembly 80 includes a support platform 81, a limiting block 82, a rotating mechanism 83, a rotating rod 84, and a lever 85. The support platform 81 is mounted on the frame 10, and the limiting block 82 is mounted on the support platform 81. The limiting block 82 has a connecting rod limiting groove 86. A second crankshaft positioning plate 431 is provided on one side of the support platform 81. The rotating mechanism 83 is located below the second crankshaft positioning plate 431 and mounted on the support platform 81. One end of the rotating rod 84 is connected to the rotating mechanism 83, and the other end is perpendicularly connected to the lever 85. In use, the rotating mechanism 83 drives the rotating rod 84 to rotate, and the rotating rod 84 drives the lever 85 to move, so that the lever 85 contacts the connecting rod on the crankshaft and moves the small end of the connecting rod to the connecting rod limiting groove 86 of the limiting block 82, thereby achieving the purpose of limiting the angle of the connecting rod and fixing the relative position of the connecting rod and the crankshaft. The rotating mechanism 83 can be a rotary cylinder.

[0030] The detection component 70 is used to detect whether the sprocket press-fit is qualified. It can use visual inspection, mechanical inspection or electronic inspection to check whether the sprocket press-in angle meets the process requirements. If it meets the process requirements, it means that the sprocket press-fit is qualified. If it does not meet the process requirements, it means that the sprocket press-fit is unqualified.

[0031] The sprocket pressing assembly 100 is used to press the sprocket at the sprocket pressing station onto the crankshaft; the fifth feeding assembly 60 is used to send the crankshaft on the detection assembly 70 to the gear pressing station or to the output station; the gear pressing assembly 110 is used to press the gear at the gear pressing station onto the crankshaft.

[0032] In one embodiment, the third feeding assembly 40 includes a third robot arm 41, a second moving mechanism 42, and a second crankshaft positioning mechanism 43. The fourth feeding assembly 50 includes a fourth robot arm 51, a sprocket attitude mechanism 52, a sprocket feeding mechanism 53, and a gear feeding mechanism 54. The second moving mechanism 42 is mounted on the frame 10 and connected to the second crankshaft positioning mechanism 43, and is used to feed the second crankshaft positioning mechanism 43 to the second loading station and the sprocket pressing station. The second crankshaft positioning mechanism 43 is used to place and position the crankshaft. The third robot arm 41 is mounted on one side of the frame 10 and is used to feed the crankshaft after the bearing is pressed to the actuation assembly 80, or to feed the crankshaft on the actuation assembly 80 to the location located at... The second crankshaft positioning mechanism 43 at the second loading station is used to send the crankshaft located on the second crankshaft positioning mechanism 43 at the second loading station to the detection assembly 70. The sprocket feeding mechanism 53 is set on one side of the frame 10 and is used to send the sprocket to the sprocket transport station. The gear feeding mechanism 54 is used to send the gear to the gear transport station. The sprocket posture mechanism 52 is set on the sprocket pressing assembly 100 and is used to identify the sprocket posture. The fourth robot arm 51 is set on the frame 10 and is used to send the sprocket at the sprocket transport station to the sprocket posture mechanism 52 for posture identification, and then send the sprocket to the sprocket pressing station in a specific posture, or to send the gear at the gear transport station to the gear pressing station.

[0033] In one embodiment, the fifth feeding assembly 60 includes a fifth robot arm 61, a third moving mechanism 62, and a third crankshaft positioning mechanism 63. The third moving mechanism 62 is mounted on the frame 10 and connected to the third crankshaft positioning mechanism 63, and is used to feed the third crankshaft positioning mechanism 63 to the third loading station or to the gear pressing station. The fifth robot arm 61 is mounted on one side of the frame 10 and is used to feed the crankshaft on the detection assembly 70 to the third crankshaft positioning mechanism 63 located at the third loading station, or to feed the crankshaft on the detection assembly 70 to the output station.

[0034] During the pressing of sprockets and gears, the third robotic arm 41 is controlled to deliver the crankshaft to the actuating mechanism. The actuating mechanism moves the connecting rod on the crankshaft to a specific position, fixing the relative position of the connecting rod and the crankshaft, preparing for the subsequent pressing of the sprocket. The second moving mechanism 42 is controlled to deliver the second crankshaft positioning mechanism 43 to the second loading station to wait. Then, the third robotic arm 41 flips and transports the crankshaft, with the relative position of the connecting rod fixed on the actuating mechanism, to the second crankshaft positioning mechanism 43 located at the second loading station. The second moving mechanism 42 then delivers the second crankshaft positioning mechanism 43 to the sprocket pressing station. In this process, the sprocket feeding mechanism 53 delivers the sprocket to the sprocket handling station. Then, the fourth robot arm 51 delivers the sprocket from the handling station to the sprocket posture mechanism 52 for posture recognition. The sprocket posture mechanism 52 can employ visual inspection, mechanical inspection, or electronic inspection. In this embodiment, visual inspection is used. Specifically, the sprocket posture mechanism 52 takes a picture of the sprocket, and the control system 120 analyzes the picture to determine the sprocket posture and the angle that the sprocket needs to be adjusted. The sprocket feeding mechanism 53 is an existing product, generally including several guide cylinders for storing sprockets, and a cylinder is set below the guide cylinder. The cylinder pushes the sprocket that falls from the guide cylinder to the target position. The sprocket feeding mechanism 53 can be purchased directly from the market. Then, the fourth robot arm 51 delivers the sprocket to the sprocket pressing station with a specific posture, so that the pressing angle of the sprocket and the crankshaft is adapted. Finally, the sprocket pressing assembly 100 presses the sprocket at the sprocket pressing station onto the crankshaft of the second crankshaft positioning mechanism 43, completing the automated assembly of the crankshaft sprocket.

[0035] After the sprocket is press-fitted, the third crankshaft positioning mechanism 63 is sent to the third loading station by the third moving mechanism 62 to wait. During this process, the second crankshaft positioning mechanism 43 is sent to the second loading station by the second moving mechanism 42. Then, the crankshaft after the sprocket is press-fitted is sent to the detection component 70 by the third robot arm 41. The detection component 70 is used to detect whether the sprocket press-fitting is qualified. If the sprocket press-fitting is qualified, the crankshaft on the detection component 70 is sent to the third crankshaft positioning mechanism 63 located at the third loading station by the fifth robot arm 61. Then, the third crankshaft positioning mechanism 63 with the crankshaft is sent to the gear press-fitting station by the third moving mechanism 62. During this process, the gear feeding mechanism 54 sends the gear to the gear handling station, and then the fourth robot arm 51 sends the gear from the gear handling station to the gear press-fitting station, so that the press-fitting angle of the gear and the crankshaft is adapted. The gear feeding mechanism 54 is an existing product, generally including several guide cylinders for storing gears, and a cylinder is set below the guide cylinder to push the gear that falls from the guide cylinder to the target position. The gear feeding mechanism 54 can be purchased directly from the market. Finally, the gear pressing assembly 110 is controlled to press the gear on the gear pressing station onto the crankshaft of the third crankshaft positioning mechanism 63, completing the automated assembly of the crankshaft gear. If the sprocket pressing is found to be unqualified, the crankshaft on the inspection assembly 70 is sent to the output station by the fifth robot 61, and the crankshaft with unqualified sprocket pressing is output from the production line.

[0036] Please refer to the following: Figure 6 and Figure 8 , Figure 6 for Figure 1 Enlarged diagram of part B, Figure 8 for Figure 3The diagram shows an enlarged view of part D. In one embodiment, the second moving mechanism 42 is provided with a first carrying plate 44, and two first guide posts 45 are spaced apart on the first carrying plate 44. The second crankshaft positioning mechanism 43 is slidably disposed on the two first guide posts 45. A first spring 46 is sleeved on the first guide posts 45. The first spring 46 is connected to the second crankshaft positioning mechanism 43 and the first carrying plate 44 respectively. The first carrying plate 44 is provided with a sprocket seat 47 for placing and positioning sprockets. The third moving mechanism 62 is provided with a second carrying plate 64, and two second guide posts 65 are spaced apart on the second carrying plate 64. The third crankshaft positioning mechanism 63 is slidably disposed on the two second guide posts 65. A second spring 66 is sleeved on the second guide posts 65. The second spring 66 is connected to the third crankshaft positioning mechanism 63 and the second carrying plate 64 respectively. The second carrying plate 64 is provided with a gear seat 67 for placing and positioning gears. The sprocket seat 47 is located below the second crankshaft positioning mechanism 43 and moves with the second crankshaft positioning mechanism 43. After the sprocket seat 47 moves to the sprocket pressing station, the fourth robot arm 51 sends the sprocket onto the sprocket seat 47. Then, the sprocket pressing assembly 100 presses it down, causing the second crankshaft positioning mechanism 43 to overcome the elastic force of the first spring 46, thereby causing the crankshaft to move downward and insert the sprocket, completing the pressing of the crankshaft sprocket. After the pressing is completed, the sprocket pressing assembly 100 moves upward, and the elastic force of the first spring 46 restores the second crankshaft positioning mechanism 43 to its original position, waiting for the next pressing. Similarly, the gear seat 67 is located below the third crankshaft positioning mechanism 63 and moves with the third crankshaft positioning mechanism 63. After the gear seat 67 moves to the gear pressing station, the fourth robot arm 51 sends the gear onto the gear seat 67. Then, the gear pressing assembly 110 presses it down, causing the third crankshaft positioning mechanism 63 to overcome the elastic force of the second spring 66, thereby causing the crankshaft to move downward and insert the gear, completing the pressing of the crankshaft gear. After the pressing is completed, the gear pressing assembly 110 moves upward, and the elastic force of the second spring 66 restores the third crankshaft positioning mechanism 63 to its original position, waiting for the next pressing.

[0037] In one embodiment, the second crankshaft positioning mechanism 43 includes a second crankshaft positioning plate 431 and a push cylinder 432 disposed on one side of the second crankshaft positioning plate 431. The two ends of the second crankshaft positioning plate 431 are slidably disposed on two first guide posts 45 respectively. The telescopic end of the push cylinder 432 is provided with a clamping plate 433. The clamping plate 433 is provided with a groove that fits with the crankshaft clearance. The structure of the third crankshaft positioning mechanism 63 is the same as that of the second crankshaft positioning mechanism 43. The two ends of the second crankshaft positioning plate 431 of the third crankshaft positioning mechanism 63 are slidably disposed on two second guide posts 65 respectively. The second crankshaft positioning plate 431 is provided with a second placement groove for placing the crankshaft. During operation, the crankshaft is placed on the second placement groove of the second crankshaft positioning plate 431 by the third robot arm 41, so that the crankshaft is placed vertically and the small end of the connecting rod on the crankshaft is set away from the clamping plate 433. Then, the clamping plate 433 is moved by pushing the cylinder 432, so that the groove on the clamping plate 433 is in clearance fit with the crankshaft to achieve clamping effect and accuracy.

[0038] In one embodiment, the sprocket pressing assembly 100 includes a second servo pressing cylinder 101, a second pressure plate 102, and a pressing head 103. The telescopic end of the second servo pressing cylinder 101 is connected to the second pressure plate 102, and the pressing head 103 is located at the bottom of the second pressure plate 102. The structure of the gear pressing assembly 110 is the same as that of the sprocket pressing assembly 100. By extending and retracting the telescopic end of the second servo pressing cylinder 101, the second pressure plate 102 and the pressing head 103 are moved vertically, thereby pressing the sprocket or gear onto the crankshaft via the pressing head 103. Using the second servo pressing cylinder 101, digital monitoring can be performed during the pressing process, accurately outputting the pressing torque and controlling the pressing distance to achieve the required process accuracy. Furthermore, the control system 120 can be equipped with a second display screen and a third display screen. The second display screen displays the pressing torque and pressing distance of the sprocket pressing process, and the third display screen displays the pressing torque and pressing distance of the gear pressing process. In one embodiment, the sprocket press assembly 100 further includes a support base 104. A second servo press-fit cylinder 101 is disposed on the top of the support base 104. The top of the support base 104 has a first through hole through which the telescopic end of the servo press-fit cylinder passes. The second pressure plate 102 is provided with two guide rods 105. The top of the support base 104 has guide holes that slide in contact with the two guide rods 105 respectively. The two guide rods 105 guide the movement of the second pressure plate 102 and the press head 103, further limiting their direction of movement.

[0039] In one embodiment, the sprocket attitude mechanism 52 includes a mounting bracket, a camera, and a light source bracket. The mounting bracket is mounted on the press-fit assembly, the camera is mounted on the mounting bracket, and a visual light source is provided at the bottom of the light source bracket. Both the light source bracket and the visual light source have second through holes. The light source is mounted on the mounting bracket, and the camera passes through the light source bracket and the visual light source through the second through holes. The camera is used to take pictures, and the visual light source is used for supplementary lighting, which can eliminate environmental interference and improve image quality.

[0040] In one embodiment, the detection assembly 70 includes a first crankshaft conveying mechanism 71, a fourth crankshaft positioning plate 72, and a vision inspection mechanism 73. The vision inspection mechanism 73 is disposed on one side of the frame 10, and the first crankshaft conveying mechanism 71 is disposed on one side of the frame 10 and connected to the fourth crankshaft positioning plate 72, for conveying the fourth crankshaft positioning plate 72 to the underside of the vision inspection mechanism 73. The crankshaft is transported via the first crankshaft conveying mechanism 71 and the fourth crankshaft positioning plate 72 to better position the third feeding assembly 40 and the fifth feeding assembly 60. The first crankshaft conveying mechanism 71 can employ an existing linear motion mechanism. In use, the first crankshaft conveying mechanism 71 moves the fourth crankshaft positioning plate 72 to one end close to the third feeding assembly 40. The fourth crankshaft positioning plate 72 has a fourth placement groove for placing the crankshaft. Then, the crankshaft after pressing the sprocket is placed on the fourth placement groove on the fourth crankshaft positioning plate 72 via the third conveying assembly. The crankshaft is conveyed to the lower part of the vision inspection mechanism 73 via the first crankshaft conveying mechanism 71. After the vision inspection mechanism 73 takes a picture of the crankshaft, it is sent to the control system 120. The control system 120 analyzes the picture to determine whether the sprocket pressing angle meets the process requirements.

[0041] In one embodiment, an output component 130 is also included. The output component 130 includes a second crankshaft conveying mechanism 131 and a fifth crankshaft positioning plate 132. The second crankshaft conveying mechanism 131 is connected to the fifth crankshaft positioning plate 132 and is used to deliver the fifth crankshaft positioning plate 132 to the output station. The fifth crankshaft positioning plate 132 receives crankshafts that fail the sprocket pressing test and then outputs the crankshafts from the output station onto the production line. The second crankshaft conveying mechanism 131 can be an existing linear motion mechanism.

[0042] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A pressing device for bearings, sprockets, and gears for crankshafts, characterized in that, It includes a frame, a first feeding assembly, a second feeding assembly, a third feeding assembly, a fourth feeding assembly, a fifth feeding assembly, and a detection assembly; The frame is equipped with an actuation assembly, a bearing pressing assembly, a sprocket pressing assembly, a gear pressing assembly, and a control system. The control system is connected to the first feeding assembly, the second feeding assembly, the third feeding assembly, the fourth feeding assembly, the fifth feeding assembly, the detection assembly, the actuation assembly, the bearing pressing assembly, the sprocket pressing assembly, and the gear pressing assembly, respectively. The actuating assembly is used to move the connecting rod on the crankshaft to a specific position; The detection component is used to detect whether the sprocket pressing is qualified; The first feeding assembly is used to feed the crankshaft to the bearing press-fitting station; The second feeding assembly is used to feed the bearing to the bearing station of the bearing press assembly in a specific orientation; The bearing press-fit assembly is used to press-fit the bearing at the bearing station onto the crankshaft at the bearing press-fit station. The third feeding assembly is used to feed the crankshaft after pressing the bearing to the actuation assembly, or to feed the crankshaft on the actuation assembly to the sprocket pressing station, or to feed the crankshaft after pressing the sprocket to the detection assembly. The fourth feeding assembly is used to feed the sprocket to the sprocket pressing station in a specific posture, or to feed the gear to the gear pressing station. The sprocket press-fit assembly is used to press the sprocket of the sprocket press-fit station onto the crankshaft; The fifth feeding assembly is used to feed the crankshaft on the detection assembly to the gear pressing station or to the output station; The gear press-fit assembly is used to press-fit the gears from the gear press-fit station onto the crankshaft.

2. The pressing device for bearings, sprockets, and gears for crankshafts according to claim 1, characterized in that, The first feeding assembly includes a first robotic arm, a first moving assembly, and a first crankshaft positioning mechanism. The second feeding assembly includes a second robotic arm, a bearing feeding mechanism, and a bearing posture mechanism. The first moving assembly is mounted on the frame and connected to the first crankshaft positioning mechanism, used to deliver the first crankshaft positioning mechanism to the first loading station and the bearing pressing station. The first crankshaft positioning assembly is used to place and position the crankshaft. The first robotic arm is mounted on one side of the frame and used to deliver the crankshaft to the first crankshaft positioning mechanism located at the first loading station. The bearing feeding mechanism is mounted on one side of the frame and used to deliver the bearing to the bearing handling station. The bearing posture mechanism is mounted on the bearing pressing assembly and used to identify the bearing posture. The second robotic arm is mounted on the frame and used to deliver the bearing from the bearing handling station to the bearing posture mechanism for posture identification, and then deliver the bearing to the bearing station of the bearing pressing assembly in a specific posture.

3. The pressing device for bearings, sprockets, and gears for crankshafts according to claim 2, characterized in that, The first crankshaft positioning mechanism includes a support, a first crankshaft positioning plate disposed on the support, a clamping structure disposed on the first crankshaft positioning plate for fixing or loosening the crankshaft, and a first mounting plate disposed on the first crankshaft positioning plate. The clamping structure includes two telescopic members located on both sides of the first crankshaft positioning plate and respectively disposed on the support. The telescopic ends of the telescopic members are provided with first clamping chucks. The first mounting plate has two guide grooves arranged radially along the crankshaft, with the groove openings facing the crankshaft. A second clamping chuck is slidably disposed in the guide grooves. A first threaded hole is provided on the side of the guide groove away from the groove opening. An adjusting bolt is threadedly connected to the first threaded hole, and the adjusting bolt is connected to the second clamping chuck.

4. The pressing device for bearings, sprockets, and gears for crankshafts according to claim 2, characterized in that, The bearing press-fit assembly includes a first servo press-fit cylinder, a first pressure plate, a bearing housing, and a fixing mechanism. The telescopic end of the first servo press-fit cylinder is connected to the first pressure plate. The bearing housing is located at the bottom of the first pressure plate, and the fixing mechanism is located on the first pressure plate for fixing the bearing on the bearing housing.

5. The pressing device for bearings, sprockets, and gears for crankshafts according to claim 1, characterized in that, The third feeding assembly includes a third robotic arm, a second moving mechanism, and a second crankshaft positioning mechanism. The fourth feeding assembly includes a fourth robotic arm, a sprocket attitude mechanism, a sprocket feeding mechanism, and a gear feeding mechanism. The second moving mechanism is mounted on the frame and connected to the second crankshaft positioning mechanism, used to deliver the second crankshaft positioning mechanism to the second loading station and the sprocket pressing station. The second crankshaft positioning mechanism is used to place and position the crankshaft. The third robotic arm is mounted on one side of the frame and used to deliver the crankshaft after the bearing is pressed to the actuation assembly, or to deliver the crankshaft on the actuation assembly to the second loading station located at the second loading station. A crankshaft positioning mechanism, or a mechanism for feeding the crankshaft located on the second crankshaft positioning mechanism at the second loading station to the detection assembly; a sprocket feeding mechanism located on one side of the frame for feeding the sprocket to the sprocket transport station; a gear feeding mechanism for feeding the gear to the gear transport station; a sprocket attitude mechanism located on the sprocket pressing assembly for identifying the sprocket attitude; and a fourth robot located on the frame for feeding the sprocket at the sprocket transport station to the sprocket attitude mechanism for attitude identification, and then feeding the sprocket to the sprocket pressing station in a specific attitude, or for feeding the gear at the gear transport station to the gear pressing station.

6. The pressing device for bearings, sprockets, and gears for crankshafts according to claim 5, characterized in that, The fifth feeding assembly includes a fifth robotic arm, a third moving mechanism, and a third crankshaft positioning mechanism. The third moving mechanism is mounted on the frame and connected to the third crankshaft positioning mechanism, and is used to feed the third crankshaft positioning mechanism to the third loading station or to the gear pressing station. The fifth robotic arm is mounted on one side of the frame and is used to feed the crankshaft on the detection assembly to the third crankshaft positioning mechanism located at the third loading station, or to feed the crankshaft on the detection assembly to the output station.

7. The pressing device for bearings, sprockets, and gears for crankshafts according to claim 6, characterized in that, The second moving mechanism is provided with a first carrying plate, and two first guide posts are spaced apart on the first carrying plate. The second crankshaft positioning mechanism is slidably mounted on the two first guide posts. A first spring is sleeved on the first guide post. The first spring is connected to the second crankshaft positioning mechanism and the first carrying plate respectively. The first carrying plate is provided with a sprocket seat for placing and positioning sprockets. The third moving mechanism is provided with a second carrying plate, and two second guide posts are spaced apart on the second carrying plate. The third crankshaft positioning mechanism is slidably mounted on the two second guide posts. A second spring is sleeved on the second guide post. The second spring is connected to the third crankshaft positioning mechanism and the second carrying plate respectively. The second carrying plate is provided with a gear seat for placing and positioning gears.

8. The pressing device for bearings, sprockets, and gears for crankshafts according to claim 7, characterized in that, The second crankshaft positioning mechanism includes a second crankshaft positioning plate and a push cylinder disposed on one side of the second crankshaft positioning plate. The two ends of the second crankshaft positioning plate are respectively slidably disposed on two first guide pillars. The extension end of the push cylinder is provided with a clamping plate. The clamping plate is provided with a groove that fits with the crankshaft clearance. The structure of the third crankshaft positioning mechanism is the same as that of the second crankshaft positioning mechanism. The two ends of the second crankshaft positioning plate of the third crankshaft positioning mechanism are respectively slidably disposed on two second guide pillars.

9. The pressing device for bearings, sprockets, and gears for crankshafts according to claim 1, characterized in that, The actuation assembly includes a support platform, a limiting block, a rotating mechanism, a rotating rod, and a lever. The support platform is mounted on the frame, the limiting block is mounted on the support platform, and the limiting block has a connecting rod limiting groove. A second crankshaft positioning plate is provided on one side of the support platform. The rotating mechanism is located below the second crankshaft positioning plate and mounted on the support platform. One end of the rotating rod is connected to the rotating mechanism, and the other end is perpendicularly connected to the lever.

10. The pressing device for bearings, sprockets, and gears for crankshafts according to claim 1, characterized in that, The detection assembly includes a first crankshaft conveying mechanism, a fourth crankshaft positioning plate, and a vision inspection mechanism. The vision inspection mechanism is located on one side of the frame, and the first crankshaft conveying mechanism is located on one side of the frame and connected to the fourth crankshaft positioning plate, for conveying the fourth crankshaft positioning plate to the area below the vision camera.

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