Transmission shaft assembly final inspection mechanism

Abstract

The invention relates to a final inspection mechanism for a transmission shaft assembly, which is automatic detection equipment for a transmission shaft of a constant velocity universal joint of a car, and adopts the technical scheme that the final inspection mechanism comprises a rack, a working table plate, a cross beam A, an electronic scale, a read-write device and a camera driving device, an arc support, a V-shaped support and a shape follow-up support are fixedly installed on the bracket, a code scanning gun is fixedly connected to the cross beam A, and the code scanning gun is opposite to the barcode printer. The read-write device comprises double guide columns and a reader-writer, the camera driving device comprises double horizontal guide rails, and a movable end of a servo motor is fixedly connected with one end of a lead screw. By the adoption of the technology, the weight, a sealing ring, a clamping spring and a two-dimensional code of a transmission shaft assembly can be automatically and efficiently detected and scanned, efficiency is high, labor intensity is lowered, and it is guaranteed that the detection and code scanning result is reliable.

Description

Technical Field

[0001] The invention relates to automatic testing equipment, in particular to a transmission shaft assembly final testing mechanism. Background Art

[0002] The transmission shaft of a car's constant velocity universal joint consists of a fixed end section, an intermediate shaft and a movable end section, wherein the fixed end section is directly connected to the wheel hub of the car's wheel, and the movable end section is directly connected to the engine's differential. The engine's power is transmitted to the wheel through the differential, the movable end section, the intermediate shaft, the fixed end section and the wheel hub, thereby driving the wheel to rotate. During the inspection of the transmission shaft assembly, weighing is used to determine whether the steel ball or grease is missing. Whether it is missing the steel ball or grease, or missing the sealing ring, it will seriously affect the performance of the transmission shaft assembly. Missing the steel ball or grease or sealing ring will cause the parts to wear faster and produce abnormal noise; if the retaining ring is missing, the transmission shaft will lose its function; missing the sealing ring or retaining ring will be discovered by the main engine factory, and the customer will be dissatisfied, resulting in the consequences of stopping production and returning the goods for claims; at the same time, single-piece traceability is a hard requirement of the main engine factory, which is convenient for quickly locking the batch when quality problems occur, so as to analyze and solve the relevant batches. In the past, the transmission shaft assembly was weighed manually, which could lead to misreading due to human factors or visual fatigue; the QR code generated for the single-piece traceability of the transmission shaft assembly was scanned manually with a handheld barcode scanner, which was labor-intensive; the sealing ring or retaining spring was inspected with the naked eye, but due to human factors or visual fatigue, misdetection was prone to occur. In either case, it would lead to customer dissatisfaction and even serious consequences such as claims. At the same time, all the above-mentioned inspections are carried out at one workstation, which is labor-intensive, has a long cycle and low efficiency, affecting delivery. Therefore, a machine that can automatically and efficiently detect the weight of the transmission shaft assembly, whether the sealing ring and retaining spring are missing, and scan the single-piece traceability QR code and scan the code with reliable quality is urgently needed at the assembly site. Summary of the invention

[0003] The purpose of the present invention is to provide a final inspection mechanism for a transmission shaft assembly. Using this technology, the weight, sealing ring, retaining ring, and QR code of the transmission shaft assembly can be automatically and efficiently inspected and scanned. This not only has high efficiency and reduces labor intensity, but also ensures that the inspection and scanning results are reliable.

[0004] The technical solution of the present invention is: a final inspection mechanism of a transmission shaft assembly comprises a frame, a workbench, a crossbeam A, an electronic scale, a reading and writing device, and a camera driving device are fixedly mounted on the frame, a barcode printer is mounted on the workbench, a through slot is provided on the workbench, the electronic scale is located below the workbench, a bracket is fixedly connected to the electronic scale, the upper part of the bracket passes through the through slot on the workbench and is located above the workbench, an arc bracket, a V-shaped bracket, and a follow-up bracket are fixedly mounted on the bracket, a recess is provided on the follow-up bracket, the shape of the recess matches the outer shape of the movable end section of the transmission shaft assembly, and a sensor is fixedly mounted on the V-shaped bracket; the crossbeam A is fixedly connected to the frame, a barcode scanner is fixedly connected to the crossbeam A, and the barcode scanner is opposite to the barcode printer on the workbench up and down; the reading and writing device comprises a crossbeam B and a crossbeam C fixedly mounted on the frame, the opposite sides of the crossbeam B and the crossbeam C are fixedly connected to the double guide pillars, a slider A is slidably connected to the double guide pillars, and a connecting block is fixedly connected to the slider A A, a reader / writer is fixedly connected to the connecting block A, a screw is spirally connected to the upper part of the slider A, and the top of the screw is in contact with the double guide column to fix the relative position between the slider A and the double guide column; the camera driving device includes a horizontal double guide rail fixedly mounted on the frame, a limiter A, a limiter B, a connecting block C, a bearing seat A, and a bearing seat B, both ends of the lead screw are supported by the bearing seat A and the bearing seat B and are rotatably connected in the bearing seat, the fixed end of the servo motor is fixedly connected to the frame through the connecting block C, and the movable end of the servo motor is fixedly connected to one end of the lead screw through a coupling, a slider B is provided on the horizontal double guide rail and is slidably connected thereto, a nut is fixedly mounted at the rear of the slider B, the lead screw and the nut are spirally connected, a connecting plate is fixedly connected to the slider B, a background screen is fixedly connected to the connecting plate, a connecting block B is fixedly connected to the slider B, a camera shield is fixedly connected to the connecting block B, a camera is installed in the camera shield, and the limiter A and limiter B are arranged at both ends of the moving track of the slider B.

[0005] A frame is fixedly mounted on the rack, a touch screen and an audible and visual alarm are fixedly mounted on the frame, and a start button and an emergency stop switch are arranged on the touch screen.

[0006] The principle of the present invention is: the reader / writer in the technical solution can automatically read the RFID tag adsorbed on the intermediate shaft of the transmission shaft assembly to generate a two-dimensional code, the barcode printer in the technical solution can automatically print out the two-dimensional code, and the printed two-dimensional code is automatically scanned by the barcode scanner and transmitted to the database to complete the single-piece traceability process of the transmission shaft assembly; the electronic scale in the technical solution can automatically weigh the transmission shaft assembly and compare it with the set weight range to determine whether the steel ball or grease is missing. If it is within the set weight range, the green light of the sound and light alarm will turn on. If it exceeds the set weight range, the sound and light alarm will alarm to prompt rectification; the servo motor drives the camera and the background screen to the position of the movable end section handle of the transmission shaft, so that the movable end section handle is located between the camera and the background screen, and the movable end section handle is photographed and compared with the set standard photo. If the comparison result is consistent, the green light of the sound and light alarm will turn on. If the sealing ring or the retaining spring is missing, the sound and light alarm will alarm to prompt rectification.

[0007] The advantages of the present invention are: it can automatically detect and scan the weight, sealing ring, retaining ring, and QR code of the transmission shaft assembly, which is not only efficient and reduces the labor intensity of the operator, but also ensures that the detection and scanning results are 100% reliable. In the past, the transmission shaft assembly was weighed manually, and misreading may occur due to human factors or visual fatigue; the QR code generated by the single-piece traceability of the transmission shaft assembly was scanned by a manual handheld scanner, which is labor-intensive; the sealing ring or retaining ring is inspected by naked eyes, but due to human factors or visual fatigue, misdetection is prone to occur. Whether the weight of the transmission shaft assembly is misjudged or the sealing ring is missing, the performance of the transmission shaft will be reduced. If the retaining ring is missing, the transmission shaft assembly will lose its function, and customers will be dissatisfied, and there will be serious consequences such as claims or even recalls. At the same time, since all the above-mentioned tests are carried out at one station, the labor intensity is high, the cycle is long, and the efficiency is low, which affects delivery. The present invention solves these problems and realizes online automatic detection and scanning of the weight, sealing ring, retaining ring and QR code of the transmission shaft assembly with 100% quality assurance, thereby improving efficiency, liberating labor, reducing the labor intensity of operators, increasing customer satisfaction and enhancing the core competitiveness of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the transmission shaft assembly final inspection mechanism of the present invention.

[0009] Figure 2 yes Figure 1 Right side view of the camera drive.

[0010] Figure 3 yes Figure 2 The CC direction schematic diagram in .

[0011] Figure 4 This is a top view of the bracket.

[0012] Figure 5 yes Figure 1 A top view of the read-write device.

[0013] Figure 6 It is a schematic diagram of the structure of the transmission shaft assembly after the RFID tag is adsorbed.

[0014] Figure 7 yes Figure 1 Enlarged view of part I.

[0015] Figure 8 yes Figure 1 Enlarged view of part II.

[0016] Fig. 9 yes Figure 6 Magnified view of the middle shank.

[0017] In the figure: 1 lead screw, 2 through slot, 3 free-standing bracket, 4 double guide column, 5 electric control cabinet, 6 electronic scale, 7 bracket, 8 work table, 9 rack, 10 barcode printer, 11 barcode scanner, 12 beam A, 13 emergency stop switch, 14 start button, 15 touch screen, 16 sound and light alarm, 17 arc bracket, 18 beam B, 19 V-shaped bracket, 20 reading and writing device, 21 screw, 22 slider A, 23 connecting block A, 24 reader, 25 beam C, 26 limiter A, 27 bearing seat A, 28 slider B, 29 connecting plate, 30 limiter B, 31 servo motor, 32 camera drive device, 33 frame, 34 connecting block C, 35 bearing seat B, 36 horizontal double guide rails, 37 background screen, 38 connecting block B, 39 camera cover, 40 camera, 41 recess, 42 sensor, 43 retaining ring, 44 handle, 45 sealing ring, 46 intermediate shaft, 47 RFID tag, 48 mobile end section. DETAILED DESCRIPTION

[0018] The present invention is an inspection mechanism for the final product of a car constant velocity universal joint transmission shaft assembly. Figure 1-8The transmission shaft assembly final inspection mechanism includes a frame 9 and a workbench 8. The workbench 8 is fixedly connected to the frame 9. An electronic scale 6, a beam A12, a reading and writing device 20, and a camera driving device 32 are fixedly installed on the frame 9. A barcode printer 10 is installed on the workbench 8. A through slot 2 is provided on the workbench 8. The electronic scale 6 is located below the workbench 8. The electronic scale 6 is used to weigh the weight of the transmission shaft assembly. A bracket 7 is fixedly connected to the electronic scale 6. The upper part of the bracket 7 passes through the through slot 2 on the workbench 8 and is located above the workbench 8. An arc bracket 17, a V-shaped bracket 19, and a follower bracket 3 are fixedly installed on the bracket 7. The follower bracket 3 is provided with a recess 4 1. The shape of the concave cavity is consistent with the shape of the movable end section of the transmission shaft assembly. The function of each bracket and the concave cavity is to place the workpiece. A sensor 42 is fixedly installed on the V-shaped bracket 19, and the sensor 42 is used to detect whether there is a workpiece; the crossbeam A12 is fixedly connected to the frame 9, and a barcode scanner 11 is fixedly connected to the crossbeam A12. The barcode scanner 11 is opposite to the barcode printer 10 on the workbench 8 up and down; the reading and writing device 20 includes a crossbeam B18 and a crossbeam C25 fixedly installed on the frame 9, and the opposite sides of the crossbeam B18 and the crossbeam C25 are fixedly connected to the double guide column 4, and a slider A22 is slidably connected to the double guide column 4, and a connecting block A23 is fixedly connected to the slider A22 , a reader / writer 24 is fixedly connected to the connecting block A23, and the reader / writer is used to read the relevant information of the RFID tag 47. A screw 21 is spirally connected to the upper part of the slider A22, and the top of the screw 21 contacts the double guide column 4 to fix the relative position between the slider A22 and the double guide column 4; the camera driving device 32 includes a horizontal double guide rail 36 fixedly mounted on the frame 9, a limiter A26, a limiter B30, a connecting block C34, a bearing seat A27, and a bearing seat B35. The two ends of the lead screw 1 are supported by the bearing seat A27 and the bearing seat B35 and are rotatably connected in the bearing seat. The fixed end of the servo motor 31 is fixedly connected to the frame 9 through the connecting block C34. On the frame 9, the movable end of the servo motor 31 is fixedly connected to one end of the lead screw 1 through a coupling, and the horizontal double guide rail 36 is provided with a slider B28 slidably connected thereto, a nut is fixedly installed at the back of the slider B28, the lead screw 1 is spirally connected to the nut, a connecting plate 29 is fixedly connected to the slider B28, a background screen 37 is fixedly connected to the connecting plate 29, a connecting block B38 is fixedly connected to the slider B28, a camera shield 39 is fixedly connected to the connecting block B38, a camera 40 is installed in the camera shield, the limiters A26 and B30 are arranged at both ends of the moving trajectory of the slider B28, and the camera driving device can move the camera to the set shooting position.

[0019] The frame 33 is fixedly mounted on the frame 9, an electric control cabinet is mounted at the lower part of the frame, a controller is mounted in the electric control cabinet, a touch screen 15 and an audible and visual alarm 16 electrically connected to the controller via a signal line are fixedly mounted on the frame 33, and a start button 14 and an emergency stop switch 13 are provided on the touch screen 15.

[0020] The final inspection mechanism of the transmission shaft assembly is provided with an automatic control system, which includes a controller and execution components that undertake different tasks. Each execution component is electrically connected to the controller through a signal line. The execution components include a servo motor 31, a reader / writer 24, an electronic scale 6, a camera 40, a barcode scanner 11, a barcode printer 10, and a sensor 42.

[0021] The movable end section 48 of the transmission shaft assembly (workpiece) is provided with a handle 44, on which a sealing ring 45 and a retaining ring 43 are mounted. The RFID tag 47 is adsorbed on the intermediate shaft 46 by its own magnetic force, and the RFID tag 47 is always adsorbed on the intermediate shaft during the entire assembly process related to the intermediate shaft 46 until it is removed after the final inspection of the transmission shaft assembly.

[0022] The final inspection refers to the final inspection of the finished product after the transmission shaft assembly is assembled.

[0023] The RFID is the abbreviation of Radio Frequency Identification, which is radio frequency identification. RFID tags are commonly known as electronic tags. The principle is that the reader 24 and the tag perform non-contact data communication to achieve the purpose of identifying the target. RFID radio frequency identification is a non-contact automatic identification technology and is an existing technology. It automatically identifies the target object and obtains relevant data through radio frequency signals. The identification work does not require manual intervention. RFID technology can identify high-speed moving objects and can identify multiple tags at the same time. The operation is quick and convenient.

[0024] RFID tags 47 are more suitable for single-piece traceability. Each assembly process of the transmission shaft assembly is identified and related information is bundled through RFID tags. Finally, all the information is generated into a QR code, which is scanned and transmitted to the database. RFID tags 47 are mostly fixed relatively to the identified target by magnetic adsorption.

[0025] The camera is an industrial high-resolution camera, which can accurately identify the difference between the photographed object and the stored standard photo by comparing with the pre-stored standard photo.

[0026] The servo motor 31 is a prior art product. The servo motor 31 is servo-controlled and can accurately control the rotation speed, position and torque.

[0027] The human-machine interface of the controller is preferably a touch screen 15, which is arranged on the surface of the electrical cabinet or mounted on the frame 33, so as to facilitate operation by the on-site staff, who can control the operation of the whole machine on the touch screen 15. An audible and visual alarm 16 is installed on the frame 33 or the electrical cabinet, which is used to emit specific audible and visual signals to indicate the working status of the final inspection mechanism of the transmission shaft assembly or to adjust various parameters or to give audible and visual alarms for any faults that occur.

[0028] The working process of the present invention is as follows: press the start button 14, put the transmission shaft assembly (workpiece) on the arc bracket 17, the V-shaped bracket 19, and the follower bracket 3, make the movable end section 48 of the transmission shaft assembly coincide with the recess 41 on the follower bracket 3, and make the RFID tag 47 adsorbed on the intermediate shaft of the transmission shaft assembly face forward and opposite to the reader 24. When the sensor 42 detects the presence of the workpiece, the movable end of the servo motor 31 drives the lead screw 1 to rotate through the coupling, and the lead screw drives the slider B28 and the camera 40 and the background screen 37 thereon to move to the left along the double guide rail to the shooting setting position (the handle 44 of the movable end section 48 of the transmission shaft assembly is located between the camera 40 and the background screen 37). The camera 40 takes a picture of the handle 44 of the mobile end section 48 and compares it with the stored standard photo. If it is consistent with the stored standard photo, that is, the handle 44 has a sealing ring 45 and a retaining ring 43, it is qualified. The servo motor 31 drives the camera 40 to retreat to the set original position, so that the handle 44 is completely outside the camera 40 and the background screen 37. The electronic scale 6 automatically weighs the weight of the transmission shaft assembly synchronously. If the weight of the transmission shaft assembly is within the set range, it is qualified. The reader 24 reads the relevant information of the RFID tag 47 on the intermediate shaft, and the relevant information generates a two-dimensional code. The barcode printer 10 prints the generated two-dimensional code, and the barcode scanner 11 scans the printed two-dimensional code and transmits the information to the database. If the result of the camera 40 shooting and comparison is unqualified, or the weight of the transmission shaft assembly is unqualified, the sound and light alarm 16 alarms to prompt rectification. Remove the detected transmission shaft assembly, remove the RFID tag 47, replace it with another transmission shaft assembly to be detected, and follow the same steps as above to enter the next detection cycle...

Claims

1. The transmission shaft assembly final inspection mechanism is characterized by: The invention comprises a frame (9), on which a workbench (8), a beam A (12), an electronic scale (6), a reading and writing device (20), and a camera driving device (32) are fixedly mounted, the workbench (8) is equipped with a barcode printer (10), the workbench (8) is provided with a through slot (2), the electronic scale (6) is located below the workbench (8), a bracket (7) is fixedly connected to the electronic scale (6), the upper part of the bracket (7) passes through the through slot (2) on the workbench (8) and is located above the workbench (8), and an arc bracket (17), a V-shaped bracket (19), and a free-standing bracket (32) are fixedly mounted on the bracket (7). ), a recess (41) is provided on the shaped bracket (3), and a sensor (42) is fixedly mounted on the V-shaped bracket 19; a barcode scanner (11) is fixedly connected to the crossbeam A (12), and the barcode scanner (11) is opposite to a barcode printer (10) mounted on the workbench (8) in the upper and lower directions; the reading and writing device (20) comprises a crossbeam B (18) and a crossbeam C (25) fixedly mounted on the frame (9), and a double guide column (4) is fixedly connected to the opposite side of the crossbeam B (18) and the crossbeam C (25), and a slider A (22) is slidably connected to the double guide column (4), and a connecting block A (23) is fixedly connected to the slider A (22), and the connecting block A (23) is fixedly connected to the connecting block A (23). 3) is fixedly connected with a reader / writer (24), a screw (21) is spirally connected to the upper part of the slider A (22), and the top of the screw (21) is in contact with the double guide column (4); the camera driving device (32) comprises a horizontal double guide rail (36) fixedly mounted on the frame (9), a stopper A (26), a stopper B (30), a connecting block C (34), a bearing seat A (27), and a bearing seat B (35), the two ends of the lead screw (1) are supported by the bearing seat A (27) and the bearing seat B (35), the fixed end of the servo motor (31) is fixedly connected to the frame (9) through the connecting block C (34), and the movable end of the servo motor (31) is fixedly connected to the frame (9). The end is fixedly connected to one end of the lead screw (1) through a coupling, a slider B (28) slidably connected thereto is provided on the horizontal double guide rail (36), a nut is fixedly installed behind the slider B (28), the lead screw (1) and the nut are spirally connected, a connecting plate (29) is fixedly connected to the slider B (28), a background screen (37) is fixedly connected to the connecting plate (29), a connecting block B (38) is fixedly connected to the slider B (28), a camera shield (39) is fixedly connected to the connecting block B (38), a camera (40) is installed in the camera shield, and the limiter A (26) and the limiter B (30) are arranged at both ends of the moving track of the slider B (28).

2. The transmission shaft assembly final inspection mechanism according to claim 1, characterized in that: The frame (33) is fixedly mounted on the rack (9), a touch screen (15) and an audible and visual alarm (16) are fixedly mounted on the frame (33), and a start button (14) and an emergency stop switch (13) are arranged on the touch screen (15).

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