Online automatic grease injection press-fitting machine for mobile end joint

Abstract

The utility model relates to an on-line automatic grease injection press-fitting machine for a mobile end joint, the mobile end joint is a constituent part of a transmission shaft of a constant velocity universal joint of a car, and the technical scheme is as follows: a double guide rail A, a double guide rail B, a transverse plate, a positioner, a sensor A, a sensor B and a correlation sensor are fixedly arranged on a rack, and the double guide rail B is connected with a transverse sliding plate in a sliding manner; a gas-liquid pressure cylinder, a coupler, a pressure sensor, a connecting block, a flange connecting sleeve and a sliding body seat are arranged in the frame, the coupler, the pressure sensor, the connecting block, the flange connecting sleeve and the sliding body seat are fixedly connected in sequence, a longitudinal sliding plate, an inductive head, a sliding body, a hard limiting stopper, an air cylinder, a grease injection pressing head and an end cover pressing head are further arranged in the frame, the telescopic end of the gas-liquid pressure cylinder is fixedly connected with the pressure sensor, and the connecting block is fixedly arranged on the longitudinal sliding plate. According to the automatic grease injection and end cover press-fitting machine, grease injection and end cover press-fitting can be automatically completed on one machine table, the grease injection amount is accurate, assembly is qualified, and the assembly quality and efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to an automatic assembly and detection device for the mobile end joint of a car drive shaft, in particular to an on-line automatic grease injection and end cover pressing machine for the mobile end joint. Background Technique

[0002] The constant velocity universal joint drive shaft of a car is composed of a fixed end joint, an intermediate shaft and a mobile end joint. Among them, the fixed end joint is directly connected to the hub of the car wheel, and the mobile end joint is directly connected to the differential of the engine. The power of the engine is transmitted to the wheel through the differential, the mobile end joint, the intermediate shaft, the fixed end joint and the hub, so as to drive the wheel to rotate. During the assembly process of the drive shaft, the grease injection and end cover pressing of the mobile end joint are very important. In particular, the amount of grease and the assembly position of the end cover will directly affect the performance of the drive shaft. If the amount of grease is insufficient or the assembly position of the end cover is not in place, it will cause the parts inside the end joint to wear more severely and cause abnormal noise of the drive shaft, thus reducing the performance of the drive shaft and causing dissatisfaction among users. In the past, the grease injection inside the mobile end joint was carried out on one machine table, and the end cover was pressed on another machine table after the grease injection. The grease injection and end cover pressing were completed separately on the two machine tables, which not only wasted manpower but also had low efficiency. More importantly, the equipment would not automatically identify whether the amount of grease injection was correct before pressing the end cover. If the amount of grease injection was incorrect, it had to be disassembled after discovery, resulting in the scrapping of relevant parts and affecting the delivery schedule. Therefore, on the assembly site, a machine that can efficiently assemble the grease injection and end cover pressing is needed, and it is necessary to ensure that the amount of grease injection is correctly detected by 100% before pressing the end cover, and at the same time ensure that the assembly position of the end cover is 100% correct. Summary of the Invention

[0003] The purpose of the utility model is to provide an on-line automatic grease injection and end cover pressing machine for the mobile end joint. This technology can automatically complete the grease injection and end cover pressing of the mobile end joint on one machine table, and through automatic detection, the amount of grease injection is accurate and the assembly position is qualified, so as to improve the assembly quality and efficiency.

[0004] The technical solution of the present utility model is: an on-line automatic grease injection and pressing machine for the mobile end section, including a frame, a machine rack installed inside the frame, and an electric control cabinet installed outside the frame. A vertically arranged double guide rail A and double guide rail B, a cross plate, a positioner, a sensor A, a sensor B, and an opposed sensor are fixedly installed on the machine rack. A horizontally arranged sliding plate is slidably connected to the double guide rail B, and a positioning groove is provided on the horizontally arranged sliding plate. The cross plate is located above the double guide rail A. The positioner is located between the double guide rail A and the double guide rail B. The sensor A and the sensor B are located on the side of the double guide rail A. The opposed sensor is located below the positioner and corresponds to the workpiece on the positioner. A gas-liquid intensifying cylinder, a coupling fixedly connected in sequence, a pressure sensor, a connecting block, a flange connecting sleeve, and a sliding body seat are installed inside the frame. A longitudinal sliding plate, an induction head, a sliding body, a hard stopper, a cylinder, a grease injection press head, and an end cover press head are also installed inside the frame. The fixed end of the gas-liquid intensifying cylinder is fixedly installed on the cross plate, and the telescopic end of the gas-liquid intensifying cylinder is fixedly connected to the upper end of the pressure sensor through the coupling. The connecting block is fixedly installed on the longitudinal sliding plate, and the longitudinal sliding plate is slidably connected to the double guide rail A. The induction head is fixedly installed on the longitudinal sliding plate, and when the longitudinal sliding plate moves, the induction head is signal-connected to the sensor A or the sensor B. The sliding body is slidably connected to the sliding body seat, and both ends of the sliding body are fixedly connected to the hard stopper. When the sliding body moves, the hard stopper contacts the sliding body seat. The fixed end of the cylinder is fixedly connected to the sliding body seat, and the telescopic end of the cylinder is fixedly connected to the sliding body. The grease injection press head and the end cover press head are respectively fixedly connected to the sliding body. A grease injection pipe is provided on the grease injection press head, and an end cover positioning pin is provided under the end cover press head. The positioner is provided with an end section positioning pin and has a relief groove, and a sensor C fixedly connected is installed on the positioner.

[0005] A bearing seat is fixedly installed on the machine rack. One end of the lead screw is rotatably connected to the bearing seat, and the other end of the lead screw is meshed and connected to the bevel gear on the handwheel driver through a bevel gear. A nut is installed on the lead screw, and the nut is fixedly connected to the horizontally arranged sliding plate.

[0006] A touch display screen, a safety light curtain, and an audible and visual alarm are fixedly installed on the frame. A start button and an emergency stop switch are provided on the touch display screen. An electric control cabinet is installed on the left part of the frame, and a controller is installed inside the electric control cabinet. The touch display screen, the audible and visual alarm, the cylinder, the gas-liquid intensifying cylinder, the sensor A, the sensor B, the sensor C, the opposed sensor, and the pressure sensor are electrically connected to the controller through signal lines.

[0007] The principle of the present utility model is as follows: The grease injection head, end cap head and sliding body are fixedly connected. Through the telescopic movement of the cylinder, the grease injection head and end cap head are respectively located directly above the mobile joint at the central position. The pressing positions of the grease injection head and end cap head are controlled by a gas-liquid intensifying cylinder, sensor A, sensor B and sensing head, and the pressure between the grease injection head and end cap head and the mobile joint is controlled by a pressure sensor to complete the assembly. Meanwhile, an off-line grease injection pump and flow valve inject a set amount of lubricating grease into the mobile joint through a grease injection pipe connected to the grease injection head, and feed back the grease injection amount to the controller. If the grease injection amount monitored by the controller conforms to the set grease injection amount, it notifies the end cap head to act for end cap pressing; otherwise, it alarms and stops the end cap pressing.

[0008] The advantages of the present utility model are as follows: It can complete two processes of grease injection and end cap pressing on one machine table, and ensure that the end cap is pressed after the grease injection amount is 100% qualified. It not only saves one machine table and one operator, but also ensures that the quality of grease injection and pressing is 100% guaranteed. In the past, the grease injection into the mobile joint was carried out on one machine table, and the end cap was pressed on another machine table after the grease injection. The grease injection and end cap pressing were respectively completed on two machine tables, which not only wasted manpower but also had low efficiency. More importantly, the equipment would not automatically identify whether the grease injection amount was correct before pressing the end cap. If the grease injection amount was incorrect, it had to be disassembled after discovery, resulting in the scrapping of related parts and affecting the delivery schedule. The present utility model just solves these problems, realizes on-line self-grease injection and automatic end cap pressing, ensures the reliability of the grease injection amount and end cap pressing by 100%, guarantees the product quality, improves the assembly efficiency, saves the machine table and operator, reduces the cost, increases the customer satisfaction, and enhances the core competitiveness of the enterprise. Description of the Drawings

[0009] Figure 1 It is a schematic structural diagram of the on-line automatic grease injection and pressing machine for the mobile joint of the present utility model.

[0010] Figure 2 is Figure 1 The enlarged view of part I in

[0011] Figure 3 It is a right view of the sliding body and sliding body seat in the present utility model.

[0012] Figure 4 It is a top view of the locator in the present utility model.

[0013] Figure 5 It is a structural view of the transmission shaft to be greased and end capped.

[0014] Figure 6 is Figure 5 The top view of

[0015] Figure 7It is a structural view of the transmission shaft for completing the grease injection and pressing end cover.

[0016] Figure 8 It is a structural view of the end cover in the present utility model.

[0017] Figure 9 It is Figure 8 top view.

[0018] Figure 1 In it: 1 handwheel driver, 2 safety light curtain, 3 lead screw, 4 nut, 5 bearing seat, 6 start button, 7 emergency stop switch, 8 touch display screen, 9 positioner, 10 end section positioning pin, 11 grease injection pipe, 12 sliding body, 13 electric control cabinet, 14 cylinder, 15 sliding body seat, 16 longitudinal sliding plate, 17 flange connecting sleeve, 18 connecting block, 19 double guide rail A, 20 pressure sensor, 21 cross plate, 22 air-liquid booster cylinder, 23 sound and light alarm, 24 coupling, 25 frame, 26 induction head, 27 sensor A, 28 hard limiter, 29 grease injection press head, 30 end cover press head, 31 sensor B, 32 end cover positioning pin, 33 sensor C, 34 opposed sensor, 35 relief groove, 36 horizontally placed sliding plate, 37 positioning groove, 38 double guide rail B, 39 machine frame, 40 mobile end section, 41 handle part, 42 fixed end section, 43 positioning surface, 44 convex top of end cover, 45 through hole of end cover, 46 through hole of end section. Detailed implementation manners

[0019] The mobile end joint described in the present utility model is one of the important components in the constant velocity universal joint drive shaft of a car. The present utility model provides an on-line automatic grease injection and pressing machine for the mobile end joint, which can save the assembly process, improve the assembly quality and efficiency. The technical solution of the present utility model includes a frame 25, a machine frame 39 installed in the frame, and an electric control cabinet 13 installed outside the frame 25. A vertically arranged double guide rail A 19, a double guide rail B 38, a cross plate 21, a positioner 9, a sensor A 27, a sensor B 31, and a photoelectric sensor 34 are fixedly installed on the machine frame 39. A horizontally arranged sliding plate 36 is slidably connected to the double guide rail B 38, and a positioning groove 37 is provided on the horizontally arranged sliding plate. The cross plate 21 is located above the double guide rail A 19. The positioner 9 is located between the double guide rail A 19 and the double guide rail B 38. The sensor A 27 and the sensor B 31 are located on the side of the double guide rail A 19. The photoelectric sensor 34 is located below the side of the positioner 9 and corresponds to the workpiece on the positioner. A gas-liquid booster cylinder 22, a coupling 24, a pressure sensor 20, a connecting block 18, a flange connection sleeve 17, and a sliding body seat 15 fixedly connected in sequence are installed in the frame 25. A longitudinal sliding plate 16, an induction head 26, a sliding body 12, a hard stopper 28, a cylinder 14, a grease injection head 29, and an end cover pressing head 30 are also installed. The fixed end of the gas-liquid booster cylinder 22 is fixedly installed on the cross plate 21, and the telescopic end of the gas-liquid booster cylinder is fixedly connected to the upper end of the pressure sensor 20 through the coupling 24. The connecting block 18 is fixedly installed on the longitudinal sliding plate 16, and the longitudinal sliding plate 16 is slidably connected to the double guide rail A 19. The induction head 26 is fixedly installed on the longitudinal sliding plate. When the longitudinal sliding plate moves, the induction head 26 is in signal connection with the sensor A 27 or the sensor B 31. The sliding body 12 is slidably connected to the sliding body seat 15. Both ends of the sliding body are fixedly connected to the hard stopper 28. When the sliding body moves, the hard stopper contacts the sliding body seat. The fixed end of the cylinder 14 is fixedly connected to the sliding body seat 15, and the telescopic end of the cylinder is fixedly connected to the sliding body. The grease injection head 29 and the end cover pressing head 30 are respectively fixedly connected to the sliding body. A grease injection pipe 11 is provided on the grease injection head 29, and an end cover positioning pin 32 is provided below the end cover pressing head. The positioner 9 is provided with an end joint positioning pin 10 and is provided with a relief groove 35. A sensor C 33 fixedly connected is installed on the positioner.

[0020] A bearing seat 5 is fixedly installed on the machine frame 39. One end of a lead screw 3 is rotatably connected to the bearing seat 5, and the other end of the lead screw is meshed and connected to the bevel gear on a handwheel driver 1 through a bevel gear. A nut 4 is installed on the lead screw 3, and the nut is fixedly connected to the horizontally arranged sliding plate 36.

[0021] The touch display screen 8, safety light curtain 2, and audible and visual alarm 23 are fixedly installed on the described frame 25. A start button 6 and an emergency stop switch 7 are provided on the touch display screen. An electric control cabinet 13 is installed on the left part of the frame, and the controller is installed inside the electric control cabinet. The touch display screen 8, audible and visual alarm 23, air cylinder 14, air-liquid intensifying cylinder 22, sensor A 27, sensor B 31, sensor C 33, opposed sensor 34, and pressure sensor 20 are electrically connected to the controller through signal lines.

[0022] The working process of the present utility model is as follows: Press the start button 6, place the mouth of the end cover downward into the end cover press head 30. There is a recess in the end cover press head 30, and a magnet column is inlaid at the recess for the purpose of loading the end cover into the recess and sucking the end cover by magnetic force. At the same time, place the end cover positioning pin 32 into the through hole 45 of the end cover, place the positioning surface 43 of the fixed end section 42 of the transmission shaft for pressing the end cover to be greased into the horizontal slide plate 36, place the handle portion 41 into the positioning groove 37, pass the transmission shaft for pressing the end cover to be greased through the relief groove 35 and place the movable end section 40 on the positioner 9, and make the end section positioning pin 10 placed into the through hole 46 of the end section. When the pair of photoelectric sensors 34 detect a workpiece and at the same time the sensor C 33 detects a workpiece, the telescopic end of the air cylinder 14 extends to drive the sliding body 12 to move rightward in the sliding body seat 15 until the left hard stopper 28 contacts the sliding body seat. At this time, the grease injection press head 29 is located directly above the movable end section 40. The air-liquid intensifying cylinder 22 drives the longitudinal slide plate to move downward along the double guide rail A 19 through the coupling 24, the pressure sensor 20, and the connecting block 18. Synchronously, the longitudinal slide plate drives the grease injection press head 29 to move downward through the connecting block 18, the flange connecting sleeve 17, the sliding body seat 15, and the sliding body 12. When the sensor B 31 detects the sensing head 26 and the pressure sensor detects that the pressure meets the set value, it indicates that the grease injection press head 29 is pressed against the upper end surface of the movable end section 40. The grease injection press head does not move, and the off-line grease injection pump and flow valve inject lubricating grease into the movable end section 40 through the grease injection pipe 11 connected to the grease injection press head (there are multiple inclined through holes in the grease injection press head, and the upper ends of the inclined through holes are communicated with the grease injection pipe for the purpose of facilitating the rapid and uniform injection of lubricating grease into the movable end section). When the controller monitors that the grease injection amount meets the set requirements, the air-liquid intensifying cylinder 22 drives the longitudinal slide plate to move upward along the double guide rail A 19 through the coupling 24, the pressure sensor 20, and the connecting block 18. Synchronously, the longitudinal slide plate drives the grease injection press head 29 to move upward through the connecting block 18, the flange connecting sleeve 17, the sliding body seat 15, and the sliding body 12. When the sensor A 27 detects the sensing head 26, the air-liquid intensifying cylinder 22 stops moving;When the telescopic end of the cylinder 14 retracts, it drives the sliding body 12 to move leftward in the sliding body seat 15 until the hard stopper 28 on the right contacts the sliding body seat. At this time, the end cover press head 30 is directly above the movable joint 40. The gas-liquid intensifying cylinder 22 drives the longitudinal slide plate to move downward along the double guide rail A19 through the coupling 24, the pressure sensor 20, and the connecting block 18. Synchronously, the longitudinal slide plate drives the end cover press head 30 to move downward through the connecting block 18, the flange connecting sleeve 17, the sliding body seat 15, and the sliding body. When the sensor B31 detects the sensing head 26 and the pressure sensor detects that the pressure meets the set value, it indicates that the end cover and the movable joint 40 are correctly press-fitted. The gas-liquid intensifying cylinder 22 drives the longitudinal slide plate to move upward along the double guide rail A19 through the coupling 24, the pressure sensor 20, and the connecting block 18. Synchronously, the longitudinal slide plate drives the grease injection press head 29 to move upward through the connecting block 18, the flange connecting sleeve 17, the sliding body seat 15, and the sliding body 12. When the sensor A27 detects the sensing head 26, the gas-liquid intensifying cylinder 22 retracts to its original position and stops moving. Remove the drive shaft that has been greased and had the end cover press-fitted, place another drive shaft to be greased and have the end cover press-fitted, and enter the next cycle of grease injection and end cover press-fitting... If the amount of grease injection monitored by the controller does not match the set amount of grease injection, an audible and visual alarm will be given and the end cover press-fitting will stop. For drive shafts of different lengths, the handwheel driver 1 can be rotated to drive the lead screw to rotate, driving the nut 4 and the horizontally placed slide plate 36 fixedly connected thereto to move up and down along the double guide rail B38 to suit drive shafts of different lengths.;

[0023] The cylinder described in this article is a mechanical product of the prior art. Generally, a cylinder has a cylinder body as a fixed end, which is fixedly installed on the corresponding component, and the cylinder also has a telescopic end as a movable end, which is also called a telescopic rod. The telescopic end reciprocates along its axial direction within the designed stroke. Telescopic cylinders are mainly divided into pneumatic telescopic cylinders, electric telescopic cylinders, electromagnetic telescopic cylinders, and hydraulic telescopic cylinders, etc. In this application, pneumatic telescopic cylinders (cylinders) and electric telescopic cylinders are preferred; among them, a pneumatic telescopic cylinder is a prior art product that converts pressurized gas into mechanical action.

[0024] The described frame is used to support the components in each of the devices at a specified position above the ground. In this application, a frame is installed on the frame, and the frame and the semi-transparent or opaque plates between the frames enclose to form an enclosed cover; the frame, the longitudinal slide plate unit, the positioner, the horizontally placed slide plate, the sensor A, the sensor B, the sensor C, and the opposed sensor are located in the enclosed cover to protect each component; on-site operators can observe the operating status of the equipment in real time through the touch display screen in the controller.

[0025] To make the drawings clear, all pipelines, wires, and standard parts in the drawings are omitted.

[0026] The human-machine interface of the controller is preferably a touch display screen, which is arranged on the surface of the electrical cabinet or mounted on the frame, facilitating the operation of on-site staff. The staff can control the operation of the whole machine on this touch display screen. An audible and visual alarm is installed on the frame or the electrical cabinet, which is used to emit specific sounds and lights to indicate the working status of the mobile section online automatic grease injection press, or to adjust various parameters, or to give an audible and visual alarm for the occurring faults.

Claims

1. Mobile online automatic grease injection press, characterized in that: It includes a frame (25), a machine frame (39) installed inside the frame, and an electric control cabinet (13) installed outside the frame (25). On the machine frame (39), a vertically arranged double guide rail A (19), a double guide rail B (38), a cross plate (21), a positioner (9), a sensor A (27), a sensor B (31), and an opposed sensor (34) are fixedly installed. A horizontally arranged sliding plate (36) is slidably connected to the double guide rail B (38), and a positioning groove (37) is provided on the horizontally arranged sliding plate. The cross plate (21) is located above the double guide rail A (19), the positioner (9) is located between the double guide rail A (19) and the double guide rail B (38), the sensor A (27) and the sensor B (31) are located on the side of the double guide rail A (19), and the opposed sensor (34) is located on the lower side of the positioner (9) and corresponds to the workpiece on the positioner. Inside the frame (25), a gas-liquid intensifying cylinder (22), a coupling (24), a pressure sensor (20), a connecting block (18), a flange connecting sleeve (17), and a sliding body seat (15) fixedly connected in sequence are installed. A longitudinal sliding plate (16), an induction head (26), a sliding body (12), a hard stopper (28), a cylinder (14), a grease injection head (29), and an end cover press head (30) are also installed. The fixed end of the gas-liquid intensifying cylinder (22) is fixedly installed on the cross plate (21), and the telescopic end of the gas-liquid intensifying cylinder is fixedly connected to the upper end of the pressure sensor (20) through the coupling (24); the connecting block (18) is fixedly installed on the longitudinal sliding plate (16), the longitudinal sliding plate 16 is slidably connected to the double guide rail A (19), the induction head (26) is fixedly installed on the longitudinal sliding plate, and when the longitudinal sliding plate moves, the induction head (26) is signal-connected to the sensor A (27) or the sensor B (31). The sliding body (12) is slidably connected to the sliding body seat (15), both ends of the sliding body are fixedly connected to the hard stopper (28), and when the sliding body moves, the hard stopper contacts the sliding body seat. The fixed end of the cylinder (14) is fixedly connected to the sliding body seat (15), and the telescopic end of the cylinder is fixedly connected to the sliding body. The grease injection head (29) and the end cover press head (30) are respectively fixedly connected to the sliding body. A grease injection pipe (11) is provided on the grease injection head (29), and an end cover positioning pin (32) is provided under the end cover press head; the positioner (9) is provided with an end joint positioning pin (10) and has a relief groove (35), and a sensor C (33) fixedly connected is installed on the positioner.

2. The on-line automatic grease injection press for mobile joints according to claim 1, characterized in that: A bearing seat (5) is fixedly installed on the machine frame (39). One end of a lead screw (3) is rotatably connected to the bearing seat (5), and the other end of the lead screw is meshed and connected to the bevel gear on a handwheel driver (1) through a bevel gear. A nut (4) is installed on the lead screw (3), and the nut is fixedly connected to the horizontally arranged sliding plate (36).

3. The online automatic grease injection press for mobile joints according to claim 1, characterized in that: A touch display screen (8), a safety light curtain (2), and an audible and visual alarm (23) are fixedly installed on the described frame (25). A start button (6) and an emergency stop switch (7) are provided on the touch display screen. An electric control cabinet (13) is installed on the left part of the frame, and the controller is installed inside the electric control cabinet. The touch display screen (), audible and visual alarm (23), air cylinder (14), air-liquid intensifying cylinder (22), sensor A (27), sensor B (31), sensor C (33), opposed sensor (34), and pressure sensor (20) are electrically connected to the controller through signal lines.

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