Automatic pressing and closing inspection machine for transmission shaft moving end section and sheath

Abstract

The present invention relates to an automatic pressing and closing detection machine for a movable end section of a transmission shaft and a sheath, comprising a frame, a pressing mechanism, and an upper pushing and closing mechanism. The frame is fixedly provided with an upper support plate, a workbench, a lower support plate, and an electrical cabinet, wherein a controller is installed in the electrical cabinet. The pressing mechanism is installed on the upper support plate, and the upper pushing and closing mechanism is installed on the lower support plate and the workbench. The pressing mechanism comprises an upper servo motor and a pressure head, wherein the upper servo motor is connected to the pressure head through a first transmission, guide, and support positioning mechanism. The upper pushing and closing mechanism comprises a lower servo motor, a three-petal push tube, and an elastic clamp, wherein the lower servo motor is connected to the three-petal push tube and the elastic clamp in sequence through a second transmission, guide, and support positioning mechanism. An upper limit position limiter and a lower limit position limiter are installed on the frame. The present invention can automatically press and close the outer cover and the sheath of the movable end section, thereby ensuring quality, improving efficiency, and saving manpower and increasing efficiency.

Description

Technical Field

[0001] The invention relates to press-fitting and closing detection equipment, in particular to an automatic press-fitting and closing detection machine for a movable end section and a sheath of a car transmission shaft. Background Art

[0002] A car's constant velocity universal joint drive shaft consists of a fixed end joint, an intermediate shaft, and a movable end joint. The movable end joint is directly connected to the car's engine differential, while the fixed end joint is connected to the wheel hub. The movable end joint is a critical safety component in the drive shaft and consists of an outer sleeve, an inner sleeve, a retaining cage, steel balls, a protective sleeve, a rubber cover, grease, and a clamp. The outer sleeve of the movable end joint has six equally spaced through holes, and the protective sleeve also has six equally spaced holes. When the protective sleeve and outer sleeve are pressed together, the six holes of the two are aligned. The movable end joint is connected to the six threaded holes of the engine differential via six bolts. The relative position of the six holes in the outer sleeve and the boot of the moving joint is crucial to the reliability of the connection between the moving joint and the differential. Failure to achieve the desired alignment will directly affect the proper connection between the moving joint and the differential, leading to malfunction of the OEM assembly line, even production halts, and customer dissatisfaction. Furthermore, a poor fit and seam between the outer sleeve and the boot can lead to grease leakage within the moving joint, causing malfunction. This can quickly lead to problems such as abnormal noise, severe wear, reduced transmission efficiency, and a shortened service life. This can cause extreme user dissatisfaction, necessitating recalls and significant losses for the company. Traditionally, the relative position of the six holes in the pressed-together outer sleeve and boot of the moving joint has been manually measured, with the six-hole position gauge passing the six holes after the two are pressed together. Manual measurement requires one person per shift and three people for three shifts, resulting in high labor costs and low efficiency. Furthermore, due to fatigue and distraction caused by long hours of work, the human element is often a factor, making inspection results less reliable and prone to missed inspections or misjudgments. This often resulted in retests failing to meet the six-hole relative positioning requirements of the outer sleeve and the protective cover of the movable end section after assembly into the complete shaft. Traditionally, the outer sleeve and protective cover of the movable end section were manually pressed together using a clamp, then closed using two half-clamps in a vise. This manual press-fitting process required two people per shift and six people for three shifts, resulting in high labor costs and low efficiency. Due to the uncertainty of manual methods, air leakage often occurs during the air tightness test after the mobile end section is pressed together; whether the relative position of the six holes between the outer sleeve and the sleeve of the assembled mobile end section is unqualified or the press-fitting of the outer sleeve and the sleeve of the mobile end section is unqualified, the unqualified transmission shaft mobile end section needs to be disassembled and reassembled and tested, which not only leads to low assembly efficiency, but also after the mobile end section is disassembled, the clamps, steel balls, grease, sleeves, rubber covers and other parts of the mobile end section are all scrapped, resulting in serious waste of materials and increased production costs. If a transmission shaft equipped with an unqualified inner sleeve is shipped to the user, abnormal noise will occur after the transmission shaft is used for a period of time, and even the production line will be stopped due to failure to assemble or grease leakage at the main engine factory, resulting in returns or claims from the main engine factory, causing huge losses to the unit.Therefore, there is an urgent need for an efficient device that can ensure the relative positioning of the six holes between the outer jacket and the sheath, as well as the qualified press-fitting of the outer jacket and the sheath at the assembly site. This device eliminates the need for high-frequency manual testing, replaces manual assembly and testing, liberates labor, reduces operator labor intensity, improves production efficiency, and ensures quality. The present invention achieves automated assembly testing, ensuring 100% qualified products. The cycle time for single-piece assembly testing is 12 seconds, an increase of 15 times the efficiency (the original manual operation cycle was 3 minutes 180 seconds), and saves at least 6 people, resulting in a minimum annual labor cost savings of 600,000 yuan. Summary of the Invention

[0003] The purpose of the present invention is to provide an automatic pressing and closing detection machine for the movable end section and the sleeve of the transmission shaft, which can automatically press and close the outer sleeve and the sleeve of the movable end section, ensure quality, improve efficiency, save manpower and increase efficiency.

[0004] The technical solution of the present invention is: a transmission shaft moving end section and a sheath automatic pressing and closing detection machine, comprising a frame, a pressing mechanism, and an upward pushing and closing mechanism, the frame is fixedly equipped with an upper support plate, a workbench, a lower support plate, and an electrical cabinet, the electrical cabinet is equipped with a controller, the electrical cabinet is equipped with an audible and visual alarm and a touch screen, the workbench is provided with a start switch and an emergency stop button, the pressing mechanism is mounted on the upper support plate, and the upward pushing and closing mechanism is mounted on the lower support plate and the workbench; the pressing mechanism comprises an upper servo motor and a pressure head, the upper servo motor is fixed Connected to the upper support plate, the upper servo motor is connected to the pressure head power through the first transmission, guide and support positioning mechanism; the upper push-up closing mechanism includes a lower servo motor, a three-petal push tube, and an elastic clamp. The lower servo motor is fixedly connected to the lower support plate, and the lower servo motor is connected to the three-petal push tube and the elastic clamp in sequence through the second transmission, guide and support positioning mechanism. An upper limit position limiter is installed on the frame between the lower pressing mechanism and the upper push-up closing mechanism, and a lower limit position limiter is installed on the frame between the workbench and the lower guide plate.

[0005] The first transmission, guide and support positioning mechanism comprises: an upper servo motor, a driving pulley A, a driven pulley A and a synchronous toothed belt A, a screw A, a bearing A, an upper tire seat, a nut A, a pressure head body A, a sliding key A, an upper guide plate, an upper guide column, and a connecting sleeve, wherein the driving pulley A is fixedly connected to the rotating end of the upper servo motor, the driving pulley A is connected to the driven pulley A through a synchronous toothed belt A, the driven pulley A is fixedly connected to the screw A, the screw A is fixedly connected to the inner ring of the bearing A, the outer ring of the bearing A is fixedly connected to the upper tire seat, and the upper tire seat is fixedly connected to the upper support plate; the screw A is rotatably connected to the nut A, the outside of the nut A is fixedly connected to the pressure head body A, and the outer circle of the pressure head body A is slidingly connected to the upper tire seat through the sliding key A; the lower part of the pressure head body A is fixedly connected to the upper guide plate, the upper guide plate is slidingly connected to the upper guide column, and the upper guide column is fixedly connected to the upper support plate; the lower end of the pressure head body A is fixedly connected to the pressure head through a connecting sleeve.

[0006] The second transmission, guide and support positioning mechanism comprises: a lower servo motor, a driving pulley B, a driven pulley B, a synchronous toothed belt B, a screw B, a bearing B, a lower tire seat, a nut B, a pressure head body B, a sliding key B, a lower guide plate, a lower guide column, a tire body, a three-part through hole, a connecting block, a ball hinge, a positioner, an anti-mistake positioning pin, and an outer conical surface; wherein, the driving pulley B is fixedly connected to the rotating end of the lower servo motor, the driving pulley B is connected to the driven pulley B through a synchronous toothed belt B, the driven pulley B is fixedly connected to the screw B, the screw B is fixedly connected to the inner ring of the bearing B, the outer ring of the bearing B is fixedly connected to the lower tire seat, and the lower tire seat is fixedly connected to the lower support plate; the screw B is rotatably connected to the nut B, the outside of the nut B is fixedly connected to the pressure head body B, and the pressure head body B The outer circle is slidably connected to the lower tire seat through a sliding key B; the upper part of the pressure head body B is fixedly connected to the lower guide plate, the lower guide plate is slidably connected to the lower guide column, and the lower guide column is fixedly connected to the lower support plate; a tire body is fixedly installed on the work table, and a three-part through hole is provided on the work table. The three petals of the three-petal push tube are movably connected up and down in the three-part through hole, the outer circle of the three-petal push tube is slidably connected to the inner circle of the tire body, the connecting block is fixedly connected to the lower end of the three-petal push tube, and the upper end of the pressure head body B is connected to the lower end of the connecting block through a ball joint; a locator is fixedly installed in the elastic clamp, the locator is fixedly connected to the work table, and an anti-error positioning pin is fixed on the locator. The elastic clamp is provided with an inner flange inside and an outer conical surface outside; the inner conical surface on the three-petal push tube is slidably connected to the outer conical surface on the elastic clamp.

[0007] The signal input end of the controller is electrically connected to the signal output ends of the emergency stop button, start switch, safety light curtain, touch screen, upper limit position limiter, and lower limit position limiter through signal lines respectively. The signal output end of the controller is electrically connected to the signal input ends of the touch screen, sound and light alarm, upper servo motor, and lower servo motor through signal lines respectively. The set pressure and set displacement parameters of the upper and lower servo motors are input and adjusted through the touch screen 44.

[0008] The present invention's press-fit detection principle involves inputting and storing the set pressure values ​​and set displacement range values ​​of the upper and lower servo motors into a controller via input ports. The set pressure values ​​and set displacement range values ​​correspond to the number of pulses and torque values ​​corresponding to the displacement and force of the power mechanism when the outer sleeve and sleeve of the movable end section are pressed together and the sleeve is closed properly. After the switch is turned on, the upper servo motor rotates to drive the pressure head downward, while the lower servo motor rotates to drive the three-flap push tube upward. When the movement reaches the set displacement range and the set pressure is reached, the controller sends a stop signal to the upper and lower servo motors, achieving the qualified pressing of the outer sleeve and sleeve of the movable end section and the qualified closing of the sleeve. The controller then controls the upper and lower servo motors to cause the pressure head and the three-flap push tube to return to their original positions. If either the pressure or displacement of the upper or lower servo motors falls outside the set range, the controller outputs a signal to an audible and visual alarm, causing an audible and visual alarm and shutting down the machine. The present invention includes a positioning pin for preventing errors, which is positioned in six holes in the sleeve and sleeve to ensure the qualified relative positioning of the sleeve and sleeve.

[0009] The working process of the present invention is as follows: before pressing and closing, the sleeve is placed on the locator with the large end of the sleeve facing upward, and the anti-error positioning pin is located in the six equally divided holes of the sleeve. Then, the movable end section is placed on the sleeve, so that the end with the annular groove on the outer circle of the sleeve is facing downward and opposite to the sleeve, and the anti-error positioning pin is located in the six equally divided through holes of the movable end section sleeve. When the start switch is pressed, the upper servo motor drives the pressure head downward to a set range and reaches a set pressure, the purpose of which is to press the movable section sleeve and the sleeve together and maintain it; the lower servo motor drives the three-petal push tube upward to a set range and reaches a set pressure, the purpose of which is to make the inner conical surface of the three-petal push tube push the outer conical surface of the elastic clamp, so that the inner flange of the elastic clamp is retracted, and the horizontal component force presses the edge of the sleeve cylindrical surface into the groove of the movable end section sleeve, so that the sleeve is closed to standard. The pressure head and the three-petal push tube respectively return to their original positions, and the workpiece is removed, and a cycle ends. When the pressure and displacement of the upper and lower servo motors are within the set range, the workpiece is qualified. If either the pressure or the displacement is outside the set range, an alarm will be issued and the machine will stop. The anti-misalignment positioning pin can ensure the relative position of the six holes of the sheath and the outer shell is qualified.

[0010] The advantages of the present invention are as follows: by setting the required range of displacement and force of the power mechanism, the outer sleeve of the movable end section can be pressed downward against the sleeve and the sleeve can be fitted with the locator. The vertical pressure and displacement are controlled to ensure that the outer sleeve and the sleeve are pressed against each other. The horizontal component force and displacement are controlled so that the inner flange of the elastic clamp moves inward, plastically deforming the edge of the cylindrical surface of the sleeve and retracting it into the annular groove of the outer sleeve, ensuring that the outer sleeve and the sleeve are properly closed. The anti-error positioning pin automatically prevents errors and ensures that the relative position of the six holes of the outer sleeve and the sleeve are properly closed. In the past, it was necessary to manually check the relative position of the six holes between the outer sleeve and the sleeve 100%, and manually press the outer sleeve and the sleeve together. This was labor-intensive, inefficient, costly, and difficult to ensure quality. There was a risk of unqualified products being assembled and also a risk of unqualified products being sent to the main engine factory. This invention achieves automated assembly and testing, replacing manual assembly and testing, freeing up labor, reducing operator workload, ensuring 100% product quality, and improving production efficiency. The cycle time for automated assembly and testing of a single piece is 12 seconds, a 15-fold increase in efficiency (compared to the original manual assembly and testing cycle of 180 seconds). This reduces the need for at least six workers and saves 600,000 yuan in labor costs annually. This increases customer satisfaction and enhances the company's core competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view of the automatic pressing and closing detection machine for the movable end section of the transmission shaft and the sheath of the present invention.

[0012] Figure 2 yes Figure 1 Left view of .

[0013] Figure 3 yes Figure 1 Right view of .

[0014] Figure 4 yes Figure 1 Top view of .

[0015] Figure 5 yes Figure 1 A partial cross-sectional view of .

[0016] Figure 6 yes Figure 5 An enlarged view of the structure of the middle-up push-closing mechanism.

[0017] Figure 7 yes Figure 5 Enlarged view of the structure of the middle and lower pressure mechanism.

[0018] Figure 8 This is the first stereoscopic view of the automatic pressing and closing detection machine for the movable end section of the transmission shaft and the sheath of the present invention.

[0019] Figure 9This is the second stereoscopic view of the automatic pressing and closing detection machine for the movable end section of the transmission shaft and the sheath of the present invention.

[0020] Figure 10 It is a schematic structural diagram of the elastic clamp in the present invention.

[0021] Figure 11 yes Figure 10 sectional view.

[0022] Figure 12 yes Figure 10 Right view of .

[0023] Figure 13 yes Figure 10 Left view of .

[0024] Figure 14 It is a structural diagram of the mobile terminal section.

[0025] Figure 15 yes Figure 14 Top view of .

[0026] Figure 16 This is a diagram of the axial pressing state of the moving end section and the sleeve.

[0027] Figure 17 It is a structural diagram of the sheath.

[0028] Figure 18 yes Figure 17 Top view of .

[0029] Figure 19 This is a picture of the state after the moving end section and the sheath are pressed together.

[0030] Figure 20 It is a connection relationship block diagram of the control system of the present invention.

[0031] In the figure, ( Figure 6 (in) 1 bearing B, 2 nut B, 3 lower tire seat, 4 pressure head body B, 5 trisecting through hole, 6 work table, 7 tire body, 8 three-petal push tube, 9 elastic clamp, 10 inner flange, 11 anti-error positioning pin, 12 outer cone, 13 inner cone, 14 positioner, 15 connecting block, 16 ball joint, 17 lower limit position limiter, 18 lower guide plate, 19 lower guide column, 20 sliding key B, 21 lead screw B, 22 lower support plate, 23 synchronous toothed belt B, 24 driven pulley B, 25 upper push-closing mechanism; Figure 7 (middle) 26 pressing mechanism, 27 synchronous toothed belt A, 28 driven pulley A, 29 bearing A, 30 upper support plate, 31 frame, 32 upper tire seat, 33 lead screw A, 34 upper guide column, 35 nut A, 36 sliding key A, 37 pressing head body A, 38 upper guide plate, 39 connecting sleeve, 40 pressing head; ( Figure 1(in Chinese) 41 emergency stop button, 42 start switch, 43 safety light curtain, 44 touch screen, 45 electrical cabinet, 46 sound and light alarm, 47 ground pin; ( Figure 3 (middle) 48 upper servo motor, 49 lower servo motor, 50 driving pulley B; ( Figure 8 51 driving pulley A; ( Figure 10 (middle) 52 long notch, 53 outer cone; ( Figure 11 (middle) 54 connection hole; ( Figure 14 (middle) 55 movable end section, 56 equally divided window, 57 outer sleeve, 58 steel ball, 59 retainer, 60 inner sleeve, 61 annular groove; ( Figure 15 (middle) 62 six equally divided through holes; ( Figure 17 middle, Figure 18 (middle) 63 large end of the sheath, 64 edge of the cylindrical surface, 65 sheath, 66 six-equally divided holes, 67 sealant, 68 cylindrical surface, 69 large end surface; ( Figure 1 (middle) 70 upper limit position limiter. DETAILED DESCRIPTION

[0032] The present invention is an automatic pressing and closing inspection machine for the movable end section and the sheath of the transmission shaft for cars. The technical structure includes a frame 31, a pressing mechanism 26, and an upward closing mechanism 25. The frame is fixed with an upper support plate 30, a workbench 6, a lower support plate 22, and an electrical cabinet 45. The electrical cabinet is equipped with a controller. The electrical cabinet is equipped with an audible and visual alarm 46 and a touch screen 44. The workbench is provided with a start switch 42 and an emergency stop button 41. The pressing mechanism 26 is installed on the upper support plate, and the upward closing mechanism 25 is installed on the lower support plate and the workbench. The pressing mechanism 26 includes an upper servo motor 48 and a pressure head 40. The upper servo motor is fixedly connected to the upper support plate. On the plate 30, the upper servo motor is connected to the pressure head power through the first transmission, guide and support positioning mechanism; the upper push-up closing mechanism 25 includes a lower servo motor 49, a three-petal push tube 8, and an elastic clamp 9. The lower servo motor is fixedly connected to the lower support plate, and the lower servo motor is connected to the three-petal push tube and the elastic clamp in sequence through the second transmission, guide and support positioning mechanism. The upper limit position limiter 70 is installed on the frame between the lower pressing mechanism and the upper push-up closing mechanism, and the lower limit position limiter 17 is installed on the frame between the workbench and the lower guide plate 18.

[0033] The first transmission, guide and support positioning mechanism comprises: an upper servo motor 48, a driving pulley A51, a driven pulley A28 and a synchronous toothed belt A27, a lead screw A33, a bearing A29, an upper tire seat 32, a nut A35, a pressure head body A37, a sliding key A36, an upper guide plate 38, an upper guide column 34, and a connecting sleeve 39, wherein the driving pulley A51 is fixedly connected to the rotating end of the upper servo motor, the driving pulley A51 is connected to the driven pulley A28 through a synchronous toothed belt A27, and the driven pulley Pulley A is fixedly connected to the screw A33, the screw A is fixedly connected to the inner ring of the bearing A29, the outer ring of the bearing A is fixedly connected to the upper tire seat 32, and the upper tire seat is fixedly connected to the upper support plate 30; the screw A is rotatably connected to the nut A35, the outer part of the nut A is fixedly connected to the pressure head body A37, and the outer circle of the pressure head body A is slidingly connected to the upper tire seat through the sliding key A36; the lower part of the pressure head body A is fixedly connected to the upper guide plate 38, the upper guide plate is slidingly connected to the upper guide column 34, and the upper guide column is fixedly connected to the upper support plate; the lower end of the pressure head body A is fixedly connected to the pressure head 40 through the connecting sleeve 39.

[0034] The second transmission, guide and support positioning mechanism comprises: a lower servo motor 49, a driving pulley B50, a driven pulley B24, a synchronous toothed belt B23, a screw B21, a bearing B1, a lower tire seat 3, a nut B2, a pressure head body B4, a sliding key B20, a lower guide plate 18, a lower guide column 19, a tire body 7, a three-part through hole 5, a connecting block 15, a ball hinge 16, a positioner 14, an anti-error positioning pin 11, and an outer conical surface 12; wherein, the driving pulley B50 is fixedly connected to the rotating end of the lower servo motor 49, the driving pulley B is connected to the driven pulley B24 through a synchronous toothed belt B23, the driven pulley B is fixedly connected to the screw B21, the screw B is fixedly connected to the inner ring of the bearing B1, the outer ring of the bearing B is fixedly connected to the lower tire seat 3, and the lower tire seat is fixedly connected to the lower support plate 22; the screw B is rotatably connected to the nut B2, and the outer portion of the nut B is connected to the The ram body B4 is fixedly connected, and the outer circle of the ram body B is slidably connected to the lower tire seat through a sliding key B20; the upper part of the ram body B is fixedly connected to the lower guide plate 18, the lower guide plate is slidably connected to the lower guide column 19, and the lower guide column is fixedly connected to the lower support plate; a tire body 7 is fixedly mounted on the work table, and a three-part through hole 5 is provided on the work table. The three petals of the three-petal push tube 8 are movably connected up and down in the three-part through hole, the outer circle of the three-petal push tube is slidably connected to the inner circle of the tire body, the connecting block 15 is fixedly connected to the lower end of the three-petal push tube, and the upper end of the ram body B is connected to the lower end of the connecting block through a ball joint 16; a locator 14 is fixedly mounted in the elastic clamp 9, the locator is fixedly connected to the work table, and an anti-error positioning pin 11 is fixedly mounted on the locator. The elastic clamp is provided with an inner flange 10 inside and an outer conical surface 12 outside; the inner conical surface 13 on the three-petal push tube is slidably connected to the outer conical surface on the elastic clamp.

[0035] The signal input end of the controller is electrically connected to the signal output ends of the emergency stop button 41, the start switch 42, the safety light curtain 43, the touch screen 44, the upper limit position limiter 70, and the lower limit position limiter 17 through signal lines, respectively. The signal output end of the controller is electrically connected to the signal input ends of the touch screen 44, the sound and light alarm 46, the upper servo motor 48, and the lower servo motor 49 through signal lines, respectively. The set pressure and set displacement parameters of the upper and lower servo motors are input and adjusted through the touch screen 44.

[0036] like Figure 17 、 Figure 18 As shown, the large end surface 69 of the sheath 65 is provided with six equally divided holes 66, the large end 63 of the sheath is provided with a cylindrical surface 68, and a sealant 67 of a certain shape requirement is applied on the large end surface; Figure 14 、 15 As shown, the movable end section 55 includes an outer sleeve 57, an inner sleeve 60, a retainer 59, and a steel ball 58. The outer sleeve is provided with six equally divided through holes 62 along its circumference, and an annular groove 61 is provided on the outer circumference of the outer sleeve. Figure 16 This is the state after the movable end section and the sleeve are axially pressed together, requiring the large end face 69 of the sleeve to be pressed against the end face of the movable end section; Figure 19 It is the state after the movable end section and the sleeve are pressed together. It is required that the edge 64 of the cylindrical surface of the large end 63 of the sleeve be deformed and retracted into the annular groove on the outer circle of the movable end section, and the two are in close contact; at the same time, it is necessary to ensure that the positions of the six holes between the movable end section and the sleeve are concentrically aligned.

[0037] During operation, the sleeve 65 is placed on the locator 14 with the large end 63 of the sleeve facing upward and the anti-error positioning pin 11 positioned in the six equally divided holes of the sleeve. The movable end section is then placed on the sleeve with the end of the outer sleeve 57 with the annular groove 61 facing downward and opposite to the sleeve, and the anti-error positioning pin is positioned in the six equally divided through holes of the movable end section outer sleeve. When the start switch 42 is pressed, the rotating end of the upper servo motor 48 drives the driving pulley A51 to rotate, which in turn drives the driven pulley A28 to rotate through the synchronous toothed belt A27, thereby driving the screw A33 to rotate within the nut A35. The nut A drives the pressure head body A37 to move downward along the inner cylindrical surface of the upper tire seat 32 under the restriction of the sliding key A36, thereby driving the pressure head 40 downward through the connecting sleeve 39. Within the required displacement and force range, the end face of the outer sleeve of the movable end section is pressed downward against the large end face of the sleeve and the large end face of the sleeve is affixed to the locator. At this time, the pressure head is stationary and enters the holding state. During the movement of the ram, the upper guide plate 38 moves along with the ram body A along the upper guide column 34 to play a guiding role. When the upper guide plate touches the upper limit position limiter 70, the pressing mechanism 26 retracts to its original position to protect the mechanism; the rotating end of the lower servo motor 49 drives the active pulley B50 to rotate, and drives the driven pulley B24 to rotate through the synchronous toothed belt B23, and then drives the screw B21 to rotate in the nut B2, and the nut B drives the pressure head body B4 to move upward along the inner cylindrical surface of the lower tire seat 3 under the restriction of the sliding key B20, thereby driving the three-petal push tube 8 through the three-part through-hole 5 on the workbench 6 to move upward along the inner cylindrical surface of the tire body 7 through the ball hinge 16 and the connecting block 15, and the inner conical surface 13 contacts and squeezes the outer conical surface 12 of the elastic clamp 9, so that the elastic clamp is retracted, and the inner flange 10 of the elastic clamp squeezes the edge 64 of the cylindrical surface of the sleeve 65 into the annular groove 61 of the outer sleeve 57. Within the set displacement and force requirements, the edge of the cylindrical surface of the sleeve undergoes plastic deformation and fits tightly with the annular groove to complete the closing work. During the movement of the three-flap push tube, the lower guide plate 18 moves along the lower guide column 19 to play a guiding role. When the inner cone and the outer cone interact with each other, since the force can be decomposed into the force along the cone and the force perpendicular to the cone, and they are linearly related, the vertical force acting on the cone can be used to calculate the vertical force acting on the cone. Then, the vertical force can be used instead of the vertical force on the cone to set the edge of the cylindrical surface of the sleeve to fit into the annular groove, completing the range setting of the closing force. Similarly, the displacement can also be calculated instead. When the lower guide plate touches the lower limit position limiter 17, the closing mechanism 25 is pushed up to retract to its original position to protect the mechanism. Regardless of whether the pressure head 40 moves downward or the three-flap push tube moves upward, when the force or displacement exceeds the tolerance, the sound and light alarm 46 will alarm and shut down, and the alarm content will be displayed on the touch screen 44. In order to protect the operator, when a hand or other object passes through the safety light curtain 43, the equipment will alarm and shut down.

[0038] The upper and lower servo motors can precisely control the rotation angle. Their main function is to convert rotational motion into linear motion and also transmit power, with high precision, reversibility and high efficiency.

[0039] The controller, actuators, and any electronic equipment requiring shielding and protection are housed in an electrical cabinet 45. The controller's human-machine interface touchscreen 44 is located on the cabinet's surface or mounted on the machine frame 31, making it easy for on-site staff to operate. Staff can use this touchscreen to control the entire machine's operation or adjust various parameters. An audible and visual alarm 46, located on the machine frame or cabinet, displays the operating status of the automatic pressure-sealing inspection system for the movable end section of the drive shaft and the sheath. The speaker in the audible and visual alarm, mounted on the cabinet or rack, emits a specific sound to indicate the machine's operating status or to provide an audible alarm for any malfunctions.

Claims

1. Automatic pressing and closing inspection machine for transmission shaft moving end section and sheath, characterized by: The invention comprises a frame (31), a pressing mechanism (26), and an upper push-up closing mechanism (25); an upper support plate (30), a workbench (6), a lower support plate (22), an electrical cabinet (45), and a safety light curtain (43) are fixedly mounted on the frame; a controller is mounted in the electrical cabinet; an audible and visual alarm (46) and a touch screen (44) are mounted on the electrical cabinet; a start switch (42) and an emergency stop button (41) are provided on the workbench; the pressing mechanism (26) is mounted on the upper support plate; the upper push-up closing mechanism (25) is mounted on the lower support plate and the workbench; the pressing mechanism (26) comprises an upper servo motor (48) and a pressure head (40); the upper servo motor is fixedly connected to the upper support plate (30); the upper servo motor is driven by a first transmission , the guide and support positioning mechanism is connected to the pressure head power; the upper push-up closing mechanism (25) includes a lower servo motor (49), a three-petal push tube (8), and an elastic clamp (9). The lower servo motor is fixedly connected to the lower support plate. The lower servo motor is connected to the three-petal push tube and the elastic clamp in sequence through the second transmission, guide and support positioning mechanism. An upper limit position limiter (70) is installed on the frame between the lower pressing mechanism and the upper push-up closing mechanism, and a lower limit position limiter (17) is installed on the frame between the workbench and the lower guide plate (18); the second transmission, guide and support positioning mechanism has: a lower servo motor (49), a driving pulley B (50), a driven pulley B (24), a synchronous toothed belt B (23), screw B (21), bearing B (1), lower tire seat (3), nut B (2), pressure head body B (4), sliding key B (20), lower guide plate (18), lower guide column (19), tire body (7), three-divided through hole (5), connecting block (15), ball hinge (16), positioner (14), anti-error positioning pin (11), outer conical surface (12); wherein, the driving pulley B (50) is fixedly connected to the rotating end of the lower servo motor (49), the driving pulley B is connected to the driven pulley B (24) through a synchronous toothed belt B (23), the driven pulley B is fixedly connected to the screw B (21), the screw B is fixedly connected to the inner ring of the bearing B (1), and the outer ring of the bearing B is fixedly connected to the lower tire seat (3). The lower tire seat is fixedly connected to the lower support plate (22); the screw B is rotatably connected to the nut B (2), the outer portion of the nut B is fixedly connected to the pressure head body B (4), and the outer circle of the pressure head body B is slidably connected to the lower tire seat through the sliding key B (20); the upper part of the pressure head body B is fixedly connected to the lower guide plate (18), the lower guide plate is slidably connected to the lower guide column (19), and the lower guide column is fixedly connected to the lower support plate; a tire body (7) is fixedly mounted on the work table, and a three-part through hole (5) is provided on the work table. The three petals of the three-petal push tube (8) are movably connected up and down in the three-part through hole. The outer circle of the three-petal push tube is slidably connected to the inner circle of the tire body. The connecting block (15) is fixedly connected to the lower end of the three-petal push tube, and the upper end of the pressure head body B is connected to the lower end of the connecting block through a ball joint (16);A locator (14) is fixedly installed in the elastic clamp (9), the locator is fixedly connected to the workbench, and an anti-error positioning pin (11) is fixedly installed on the locator. The elastic clamp is provided with an inner flange (10) inside and an outer conical surface (12) outside. The inner conical surface (13) on the three-petal push tube is slidably connected to the outer conical surface on the elastic clamp.

2. The automatic pressing and closing detection machine for the movable end section of the transmission shaft and the sheath according to claim 1 is characterized in that: The first transmission, guide and support positioning mechanism comprises: an upper servo motor (48), a driving pulley A (51), a driven pulley A (28) and a synchronous toothed belt A (27), a screw A (33), a bearing A (29), an upper tire seat (32), a nut A (35), a pressure head body A (37), a sliding key A (36), an upper guide plate (38), an upper guide column (34), and a connecting sleeve (39), wherein the driving pulley A (51) is fixedly connected to the rotating end of the upper servo motor, and the driving pulley A (51) and the driven pulley A (28) are connected by the synchronous toothed belt A (27 ), the driven pulley A is fixedly connected to the lead screw A (33), the lead screw A is fixedly connected to the inner ring of the bearing A (29), the outer ring of the bearing A is fixedly connected to the upper tire seat (32), and the upper tire seat is fixedly connected to the upper support plate (30); the lead screw A is rotatably connected to the nut A (35), the outer portion of the nut A is fixedly connected to the pressure head body A (37), and the outer circle of the pressure head body A is slidably connected to the upper tire seat through the sliding key A (36); the lower part of the pressure head body A is fixedly connected to the upper guide plate (38), the upper guide plate is slidably connected to the upper guide column (34), and the upper guide column is fixedly connected to the upper support plate; the lower end of the pressure head body A is fixedly connected to the pressure head (40) through the connecting sleeve (39).

3. The automatic pressing and closing detection machine for the movable end section of the transmission shaft and the sheath according to claim 1 is characterized in that: The signal input end of the controller is electrically connected to the signal output ends of the emergency stop button (41), the start switch (42), the safety light curtain (43), the touch screen (44), the upper limit position limiter (70), and the lower limit position limiter (17) through signal lines, and the signal output end of the controller is electrically connected to the signal input ends of the touch screen (44), the sound and light alarm (46), the upper servo motor (48), and the lower servo motor (49) through signal lines.

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