Railway vehicle part cylindrical plug thread glue automatic point coating device

Abstract

The present application belongs to the field of automatic point coating, and particularly relates to a rail vehicle part cylindrical plug thread glue automatic point coating device, which comprises a central control system, left and right moving modules, a 90-degree overturning device, a jacking feeding device and a point coating system, the left and right moving modules are fixed on a rack, the rack is provided with a guide slide rail and a cable drag chain, the central control system is in communication connection with the left and right moving modules, the 90-degree overturning device, the jacking feeding device and the point coating system respectively; the central control system controls the left and right moving modules to drive the 90-degree overturning device to move on the guide slide rail of the rack, and the jacking feeding device and the point coating system are fixed on the rack. The advantage lies in that the thread glue is single-quantitative or timed point coated.

Description

Technical Field

[0001] This invention belongs to the field of automatic application, specifically relating to an automatic application device for adhesive on cylindrical plugs and threads of rail vehicle components. Background Technology

[0002] In the basic braking device of high-speed trains, the reliability of the plug seal of valve components can greatly affect the overall performance of the device. Threading adhesive is a commonly used method to prevent bolt loosening and ensure the reliability of mechanical interference fit and sealing. During the bolt tightening, structural interference fit and pore sealing assembly process, the threading adhesive is applied to the contact surface of the bolt or mounting part and the installation is completed. This ensures the reliability of bolt tightening, structural interference fit and pore sealing assembly.

[0003] Existing methods for applying thread-locking adhesive liquids mostly rely on manual labor, which is not only inefficient and labor-intensive but also easily contaminates parts. Summary of the Invention

[0004] To address the aforementioned issues, this application provides an automatic adhesive application device for cylindrical plug threads of rail vehicle components, capable of automatic loading and unloading before bolt adhesive application, and usable in conjunction with a front-end automatic bolt feeding machine and a rear-end automatic bolt assembly machine. The technical solution is as follows:

[0005] An automatic adhesive application device for cylindrical plugs and threaded parts of rail vehicles includes a central control system, a left-right moving module, a 90-degree tilting device, a lifting and feeding device, and an adhesive application system. The left-right moving module is fixed on a frame, and the frame is equipped with guide rails and cable drag chains.

[0006] The central control system is connected to the left and right moving modules, the 90-degree flipping device, the lifting and feeding device, and the dispensing system.

[0007] The central control system controls the left and right moving modules to drive the 90-degree flipping device to move on the guide rail of the frame. The lifting and feeding device and the dispensing system are fixed on the frame.

[0008] Preferably, the 90-degree flipping device includes a wedge-shaped gripper, a clamping cylinder, a flipping cylinder, and a drive connecting plate. The clamping cylinder is fixedly connected to the wedge-shaped gripper and to a cylinder mounting plate. The cylinder mounting plate is connected to a sliding mounting plate via a rotating hinge plate, and the sliding mounting plate is slidably connected to a guide rail. The flipping cylinder is fixed on the sliding mounting plate, and the piston rod of the flipping cylinder is hinged to the cylinder mounting plate via a cylinder front end connecting plate. The drive connecting plate is connected to the sliding mounting plate and the cable chain mounting plate, respectively. The cable chain mounting plate is connected to a cable cable chain, and the wedge-shaped gripper is provided with wedge-shaped grooves of different sizes.

[0009] Preferably, the sliding mounting plate includes a horizontal plate and a vertical plate fixedly connected thereto. The upper surface of the horizontal plate is provided with an upper limit block and a lower limit angle adjusting bolt. The lower surface of the horizontal plate is provided with a slider, which is slidably connected to the guide rail.

[0010] Preferably, the lifting and feeding device includes a material tray, a lifting cylinder, a cylinder mounting component, and an adjusting connecting plate; the material tray is connected to the lifting cylinder, the adjusting connecting plate is connected to the material tray, the lifting cylinder is fixed to the frame through the cylinder mounting component, the adjusting connecting plate is fitted onto the adjusting bolt, and the adjusting bolt is connected to the frame through a bolt fixing plate; the material tray is provided with slots of different diameters.

[0011] Preferably, the dispensing system includes a second clamping cylinder, fixed jaws, a telescopic shaft, an input rotating shaft, a clamping shaft, a glue storage tank, a dispensing valve, a dispensing head, and a geared motor; the second clamping cylinder is fixedly connected to a pair of fixed jaws, one of which is equipped with a clamping shaft, and the other is equipped with a telescopic shaft. The telescopic shaft is mounted on the input rotating shaft, which is fixed to a support frame via a bearing mounting seat. The input rotating shaft is connected to the geared motor via a coupling; the glue storage tank is located above the fixed jaws and communicates with the dispensing valve, and the dispensing valve has a dispensing head at its bottom.

[0012] Preferably, the dispensing valve is fixedly connected to the glue storage tank, the glue storage tank is fixedly connected to the movable slide table via a sliding plate, and the movable slide table is fixed on the support frame.

[0013] Preferably, the bearing mounting base is provided with a deep groove ball bearing, the input rotating shaft is located inside the deep groove ball bearing and connected to the bearing end cover two, the telescopic shaft is provided with a bearing end cover one, and the clamping shaft is connected to the fixed clamping jaws through an angular contact ball bearing; a glue leakage storage box is provided below the dispensing valve, and the glue leakage storage box is located on the support frame.

[0014] Preferably, the automatic dotting process is as follows:

[0015] S1. After the central control system detects that the lifting cylinder has reached its designated position, it controls the left and right movement module to move the 90-degree tilting device to directly above the material discharge hole according to the program settings, so that the wedge groove of the wedge gripper is aligned vertically with the material discharge hole; the clamping cylinder on the 90-degree tilting device opens, causing the wedge gripper to open.

[0016] S2. The central control system detects that the left and right moving modules have reached their positions. After the clamping cylinder has reached its position, it controls the lifting cylinder in the lifting and feeding device to move according to the program settings, which drives the material to rise. The movement distance of the lifting cylinder is achieved by setting the relative position of the adjusting bolt and adjusting nut. After the material rises, the wedge-shaped jaws on the material tray are in the wedge-shaped grooves. The clamping cylinder moves, causing the wedge-shaped jaws to clamp the material on the material tray. The lifting cylinder resets, waiting for the next feeding machine to feed the material. This completes the material grabbing process.

[0017] S3. After the central control system detects that the clamping cylinder has reached the position, the left and right moving module drives the 90-degree flipping device to the dispensing operation preparation position. The flipping cylinder in the 90-degree flipping device is activated, which drives the clamping cylinder to flip, thereby realizing the material flipping 90 degrees. The left and right moving module continues to move, moving the material on the wedge-shaped gripper to directly below the dispensing head.

[0018] S4. After the central control system detects that the material is in place, the clamping cylinder two in the dispensing system moves to drive a pair of fixed jaws to move closer to each other and clamp the two ends of the material. The clamping cylinder one controls the wedge jaws to release the material. After the clamping cylinder two moves to the position, the reduction motor rotates to drive the material to rotate at a uniform speed.

[0019] S5. After the central control system detects that the geared motor has started to move, the telescopic shaft and the input rotary shaft rotate, controlling the dispensing valve to perform quantitative or timed dispensing operations according to preset parameters, so that the glue is sprayed vertically onto the material surface. With the rotation of the geared motor, the dispensing valve can apply glue to the material around the circumference. The moving slide can realize spiral dispensing operations on the material surface according to the thread pitch.

[0020] S6. After dispensing is completed, the reduction motor rotates a certain number of times and then stops rotating, indicating that dispensing is finished. The clamping cylinder controls the wedge-shaped gripper to clamp the material again. The left and right moving module drives the 90-degree flipping device to exit the dispensing position and return to the previous dispensing preparation position. The flipping cylinder moves, causing the material to flip back 90 degrees to reset. The left and right moving module moves the material to the unloading position to continue subsequent operations.

[0021] Beneficial effects

[0022] 1. The equipment has high working efficiency, high dispensing cleanliness, and a high degree of system automation.

[0023] 2. The wedge-shaped jaws are highly adaptable and can be widely used for cylindrical parts of different sizes.

[0024] 3. The dispensing time and amount of adhesive are controllable, and the program can be customized according to customer needs.

[0025] 4. The clamping cylinder is used, and the clamping force is adjustable, which can effectively protect the clamped parts. Attached Figure Description

[0026] Figure 1 This is the front view of the automatic dispensing system.

[0027] Figure 2 This is the front view of the 90-degree rotating device.

[0028] Figure 3 This is the front view of the wedge-shaped gripper.

[0029] Figure 4 This is a schematic diagram of a lifting and feeding device.

[0030] Figure 5 This is a schematic diagram of a dispensing system.

[0031] Figure 6 This is a cross-sectional view of the dispensing system.

[0032] Figure 7 This is a schematic diagram of the dispensing control system.

[0033] Figure 8 This is a diagram showing the location of the parts where adhesive is applied.

[0034] Figure 9 This is a 3D view of an automated dispensing system.

[0035] Figure 10 This is a three-dimensional structural diagram of a 90-degree flipping device.

[0036] In the diagram, 1-left and right moving module, 2-90-degree flipping device, 201-wedge gripper, 2011-wedge groove, 202-clamping cylinder one, 203-cylinder front end connecting plate, 204-cylinder mounting plate, 205-rotating hinge plate, 206-pin, 207-lower limit angle adjusting bolt, 208-cylinder head Y-type connector, 209-flipping cylinder, 210-rotating mounting plate, 211-drive connecting plate, 212-drag chain mounting plate, 213-upper limit block, 214-sliding mounting plate, 2141-horizontal plate, 2142-vertical plate, 2143-slider, 3-lifting feeding device, 301-material tray, 302-lifting cylinder, 303-cylinder mounting component, 304-adjusting connecting plate, 30 5-Adjusting bolt, 306-Adjusting nut, 307-Bolt fixing plate, 4-Dispensing system, 401-Clamping cylinder II, 402-Fixing gripper, 403-Telescopic shaft, 404-Input rotary shaft, 405-Angular contact ball bearing, 406-Clamping shaft, 407-Bearing end cover I, 408-Deep groove ball bearing, 409-Bearing end cover II, 410-Dispensing bucket, 411-Dispensing valve, 412-Dispensing head, 413-Moving slide, 414-Coupling, 415-Gear motor, 416-Storage box, 417-Support frame, 418-Bearing mounting seat, 419-Sliding plate, 5-Guide slide rail, 501-Central control system, 502-Dispensing controller, 503-Air source treatment component, 6-Frame, 7-Cable drag chain. Detailed Implementation

[0037] The following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application.

[0038] An automatic adhesive application device for cylindrical plugs of rail vehicle components includes a central control system, a left and right moving module 1, a 90-degree flipping device 2, a lifting and feeding device 3, and an adhesive application system 4. The left and right moving module 1 is fixed on a frame 6, and the frame 6 is provided with a guide rail 5 and a cable drag chain 7.

[0039] The central control system is connected to the left and right moving module 1, the 90-degree flipping device 2, the lifting and feeding device 3 and the dispensing system 4 respectively.

[0040] The central control system controls the left and right moving module 1 to move the 90-degree flipping device 2 on the guide rail 5 of the frame 6 via the cable drag chain 7. The lifting and feeding device 3 and the dispensing system 4 are fixed on the frame 6.

[0041] The 90-degree flipping device includes a wedge-shaped gripper 201, a clamping cylinder 202, a flipping cylinder 209, a drive connecting plate 211, and a sliding mounting plate 214. The clamping cylinder 201 is fixedly connected to the wedge-shaped gripper 201, and the clamping cylinder 202 is fixedly connected to the cylinder mounting plate 204. The cylinder mounting plate 204 and the sliding mounting plate 214 are connected by a rotating hinge plate 205 and a pin 206. The sliding mounting plate 214 includes a horizontal plate 2141 and a vertical plate 2142 fixedly connected thereto. The upper end face of the horizontal plate 2141 is provided with an upper limit block 213 and a lower limit angle adjusting bolt 207. The lower end face of the horizontal plate 2141 is provided with a slider 2143, and the slider 2143 is slidably connected to the guide rail 5. The vertical plate 2142 is connected to the drive connection plate 211. The vertical plate 2142 is connected to the tilting cylinder 209 via the rotating mounting plate 210. The drive connection plate 211 is connected to the cable chain mounting plate 212, which is connected to the cable cable chain 7. The wedge-shaped grippers are provided with wedge-shaped grooves 2011 of different sizes. The wedge-shaped grippers 201 are as follows... Figure 3 As shown, the corresponding gripper slot size can be designed according to the specific part size. Cylindrical parts with diameters within a certain range can be clamped by the same wedge-shaped opening, further improving the applicability of the grippers. The flipping cylinder 209 can realize the posture change of cylindrical parts after clamping and fastening and before dispensing. After the posture of the 90-degree flipping device 2 is adjusted, as shown in the figure, the position of the left and right moving module 1 can be adjusted by the program to precisely control the movement of different clamping parts on the wedge-shaped gripper 201 to directly below the dispensing head 412. The 90-degree flipping structure 2 can realize the dispensing of cylindrical parts in the vertical direction. Vertical dispensing can effectively ensure the cleanliness of the outer surface of the cylinder. Compared with lateral dispensing, vertical dispensing has the characteristics of simple operation, high efficiency, and high cleanliness.

[0042] The lifting and feeding device includes a material tray 301, a lifting cylinder 302, and an adjusting connecting plate 304. The material tray 301 is connected to the lifting cylinder 302 via the adjusting connecting plate 304. The lifting cylinder is fixed to the frame via a cylinder mounting part 303. The adjusting connecting plate 304 is fitted onto an adjusting bolt 305. The adjusting bolt 305 is connected to the frame 6 via a bolt fixing plate 307. An adjusting nut 306 is used to fix the adjusting bolt 305. The material tray 301 has holes and slots of different diameters. The depth of the blind holes for storing materials on the material tray 301 is machined according to the depth of the cylindrical parts, so that regardless of the height difference of the parts placed on the material tray 301, the clamping cylinder 202 can clamp each part in the middle position, which facilitates the subsequent dispensing system operation and ensures the accuracy of the dispensing position.

[0043] The dispensing system includes a second clamping cylinder (bidirectional clamping cylinder) 401, a pair of fixed jaws 402, an input rotating shaft 404, a clamping shaft 406, a glue storage tank 410, a dispensing valve 411, a dispensing head 412, and a reduction motor 415. The second clamping cylinder 401 is fixedly connected to the pair of fixed jaws 402. One of the fixed jaws 402 is equipped with a clamping shaft 406, which is connected to one of the fixed jaws 402 via an angular contact ball bearing 405. A deep groove ball bearing 408 is provided in the bearing mounting base 418, and the input rotating shaft 404 is located in the deep groove... Inside the ball bearing 408, another fixed gripper 402 is equipped with a telescopic shaft 403. The telescopic shaft 403 is fitted onto the input rotating shaft 404. The telescopic shaft 403 is equipped with a bearing end cover 407, and the input rotating shaft 404 is equipped with a bearing end cover 409. The input rotating shaft 403 is fixed to the support frame via a bearing mounting seat 418, and the input rotating shaft 404 is connected to the geared motor 415 via a coupling 414. The glue storage tank 410 is located above the fixed gripper 402 and communicates with the dispensing valve 411. The bottom of the dispensing valve 411 is equipped with a dispensing head 412. The dispensing valve 411 is fixedly connected to the glue storage tank 410, and the glue storage tank 410 is fixedly connected to the movable slide 413 via a sliding plate 419 (L-shaped structure). The movable slide 413 is fixed on the support frame 417. Below the dispensing valve 411 is a glue leakage storage box 416, which is located on the support frame 417.

[0044] Dispensing control system such as Figure 7 As shown, it includes a dispensing controller 502, an air source processing unit 503, and a central control system 501, which is usually a PLC, used to transmit switching signals to the dispensing controller 502. The dispensing controller 502 can quantitatively or periodically control the dispensing valve 411 to output glue. The glue storage tank 410 is a glue storage device, and the glue supply is ensured by manually adding glue at regular intervals.

[0045] The system's operation flow is as follows:

[0046] (1) The feeding machine (which can be an automatic bolt feeding device) places bolts or other cylindrical parts according to their model on the corresponding dropping hole position on the feeding plate of the lifting feeding device 3. The feeding machine is then reset. The lifting height of the lifting cylinder 302 is determined by the height adjustment bolt 305.

[0047] (2) After the central control system detects that the lifting cylinder 302 has reached its position, it controls the left and right moving module 1 to drive the 90-degree flipping device 2 to reach directly above the material dropping hole according to the program settings, so that the wedge groove 2011 of the wedge gripper 201 is aligned with the vertical direction of the material dropping hole, such as Figure 9As shown. The clamping cylinder 202 on the 90-degree flipping device 2 opens, driving the wedge-shaped gripper 201 to open. The upper and lower limits of the 90-degree flipping mechanism 2 are achieved by the limit block 213 and the lower limit angle adjustment bolt 207. By adjusting the upper limit block 213 and the lower limit angle adjustment bolt 207, the angle of the flipping device can be precisely controlled. The flipping cylinder 209 is connected to the drive connecting plate 211 through the sliding mounting plate 214. The front end of the flipping cylinder 209 is connected to the cylinder front end connecting plate 203 through the cylinder head Y-shaped connector 208. The cylinder front end connecting plate 203 is connected to the cylinder mounting plate 204. The cylinder mounting plate 204 and the sliding mounting plate 214 are hinged through the rotating hinge plate 205 and the pin 206. The two can rotate relative to each other, thereby realizing the transmission of power and the flipping of the angle. The sliding mounting plate 214 can connect the entire 90-degree flipping device 2 to the left and right moving module 1 to realize the precise left and right movement of the 90-degree flipping device 2.

[0048] (3) The central control system detects that the left and right moving module 1 has moved into place and the clamping cylinder 202 has moved into place. According to the program setting, the lifting cylinder 302 in the lifting and feeding device 3 is controlled to move, which drives the part to rise. The movement distance of the lifting cylinder 302 is achieved by setting the relative position of the adjusting bolt 305 and the adjusting nut 306. After the part rises, the cylindrical part on the material tray 301 is placed in the wedge groove of the wedge gripper 201. The clamping cylinder 202 moves, which makes the wedge gripper 201 clamp the cylindrical part on the material tray 301. The lifting cylinder 302 is reset and waits for the next feeding machine to feed. Thus, the cylindrical part is picked up.

[0049] (4) After the central control system detects that the clamping cylinder 202 has reached its position, the left and right moving module 1 drives the 90-degree flipping device 2 to the dispensing preparation position (below the dispensing head 412). The pen-shaped flipping cylinder 209 in the 90-degree flipping device 2 is activated, causing the clamping cylinder 202 to flip, thereby realizing the 90-degree flipping of the cylindrical part. The left and right moving module 1 continues to move, moving the part at the first position on the wedge-shaped gripper 201 to directly below the dispensing head 412. The left and right moving module 1 can place cylindrical parts at different positions directly below the dispensing head 412 according to the program settings, as follows: Figure 8 As shown;

[0050] (5) After the central control system detects that the part is in place, the clamping cylinder 2 401 in the dispensing system 4 drives the telescopic shaft 403 and the input rotating shaft 404 to tighten towards the middle, clamping the two ends of the cylindrical part at the first position. The clamping cylinder 1 202 controls the wedge jaw 201 to release the part. After the clamping cylinder 1 202 is in place, (the reduction motor is a DC reduction motor 415) the DC reduction motor 415 rotates, driving the cylindrical part at the first position to rotate at a constant speed. The DC reduction motor 415 and the input rotating shaft 404 are connected by a coupling 414. The input rotating shaft 404 rotates through a deep groove ball bearing 408. The input rotating shaft 404 and the telescopic shaft 403 rotate together. The telescopic shaft 403 can move along the axial direction of the input rotating shaft 404, but will not disengage.

[0051] (6) After the central control system 501 detects that the DC geared motor 415 starts to move, the dispensing control system starts to move. The dispensing controller 502 controls the dispensing valve 411 to perform quantitative or timed dispensing operations according to the preset parameters in the dispensing controller 502, so that the glue is sprayed vertically onto the outer surface of the cylindrical part. With the rotation of the DC geared motor 415, the dispensing valve 411 can apply glue to the cylindrical part around the circumference. The moving slide 413 can move according to the bolt dispensing process technical requirements and cooperate with the DC geared motor 415 to realize spiral dispensing operations on the cylindrical surface according to the thread pitch, which greatly expands the application range of dispensing parts.

[0052] (7) According to the preset control program, after the dispensing is completed, the DC geared motor 415 rotates a certain number of times and then stops rotating. The dispensing is completed. The clamping cylinder 202 controls the wedge gripper 201 to clamp the cylindrical part again. The left and right moving module 1 drives the 90-degree flipping device 2 to exit the dispensing position and reach the previous dispensing operation preparation position. The flipping cylinder 209 is activated, driving the cylindrical part to flip back 90 degrees to reset. The left and right moving module 1 is activated to drive the part to the unloading position to continue the subsequent operation. Usually, the unloading position is equipped with another part clamping system to clamp the dispensed part to the next station.

[0053] This equipment can be modified and upgraded to accommodate cylindrical parts of different sizes and models, and can also upgrade and modify related non-standard parts, making it widely applicable.

[0054] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A rail vehicle component cylindrical plug thread glue automatic point coating device, characterized in that, The utility model relates to a kind of automatic point coating device, including central control system, left and right movement module, 90 degree turnover device, jacking feeding device and point glue system, the left and right movement module is fixed on rack, guiding slide rail and cable drag chain are equipped on the rack, The central control system is in communication connection with the left and right movement module, the 90 degree turnover device, the jacking feeding device and the point glue system. The central control system controls the left and right movement module to drive the 90 degree turnover device to move on the guiding slide rail of the rack, and the jacking feeding device and the point glue system are fixed on the rack.

2. The automatic point coating device for the cylindrical plug thread glue of the rail vehicle parts according to claim 1, characterized in that, The 90 degree turnover device includes wedge-shaped clamping jaw, clamping cylinder one, turnover cylinder and drive connecting plate, the clamping cylinder one is fixedly connected with the wedge-shaped clamping jaw, the clamping cylinder one is fixedly connected with cylinder mounting plate, the cylinder mounting plate is connected with sliding mounting plate through rotary hinge plate, and the sliding mounting plate is slidably connected with the guiding slide rail; the turnover cylinder is fixed on the sliding mounting plate, the piston rod of the turnover cylinder is hinged with the cylinder mounting plate through cylinder front end connecting plate, the drive connecting plate is connected with the sliding mounting plate and drag chain mounting plate respectively, the drag chain mounting plate is connected with the cable drag chain, and different sizes of wedge-shaped grooves are provided on the wedge-shaped clamping jaw.

3. The automatic thread glue point coating device for a cylindrical plug of a rail vehicle part according to claim 2, characterized in that, The sliding mounting plate includes horizontal plate and vertical plate fixedly connected therewith, upper limit block and lower limit angle adjusting bolt are arranged on the upper end surface of the horizontal plate; sliding block is arranged on the lower end surface of the horizontal plate, and the sliding block is slidably connected with the guiding slide rail.

4. The automatic point coating device for the cylindrical plug thread glue of the rail vehicle parts according to claim 1, characterized in that, The jacking feeding device includes material tray, lifting cylinder, cylinder mounting piece, adjusting connecting plate; the material tray is connected with the lifting cylinder, the adjusting connecting plate is connected with the material tray, the lifting cylinder is fixed on the rack through the cylinder mounting piece, the adjusting connecting plate is sleeved on the adjusting bolt, and the adjusting bolt is connected with the rack through bolt fixing plate; different diameter holes and grooves are arranged on the material tray.

5. The automatic point coating device for the cylindrical plug thread glue of the rail vehicle parts according to claim 1, characterized in that, The point glue system includes clamping cylinder two, fixed clamping jaw, telescopic shaft, input rotary shaft, clamping shaft, glue storage barrel, point glue valve, point glue head and speed reducer motor; the clamping cylinder two is fixedly connected with a pair of fixed clamping jaws, one of the fixed clamping jaws is provided with the clamping shaft, the other fixed clamping jaw is provided with the telescopic shaft, the telescopic shaft is sleeved on the input rotary shaft, the input rotary shaft is fixed on the support frame through the bearing mounting seat, and the input rotary shaft is connected with the speed reducer motor through the shaft coupling; the glue storage barrel is located above the fixed clamping jaw and is communicated with the point glue valve, and the point glue head is arranged at the bottom of the point glue valve.

6. The automatic point coating device for the cylindrical plug thread glue of rail vehicle parts according to claim 5, characterized in that, The point glue valve is fixedly connected with the glue storage barrel, the glue storage barrel is fixedly connected with the moving sliding table through the sliding plate, and the moving sliding table is fixed on the support frame.

7. The automatic point coating device for the cylindrical plug thread glue of rail vehicle parts according to claim 5, characterized in that, Deep groove ball bearings are arranged in the bearing mounting seat, the input rotary shaft is located in the deep groove ball bearings and is connected with bearing end cover two, bearing end cover one is arranged on the telescopic shaft, the clamping shaft is connected with the fixed clamping jaw through angular contact ball bearings; glue leakage storage box is arranged below the point glue valve, and the glue leakage storage box is located on the support frame.

8. The automatic point coating device for the cylindrical plug thread glue of rail vehicle parts according to claim 5, characterized in that, The automatic point coating step is: S1. The central control system detects that the lifting cylinder is in place, controls the left and right moving module to drive the 90-degree turning device to reach the blanking hole directly above according to the program setting, so that the wedge-shaped slot of the wedge-shaped clamp is aligned in the vertical direction of the blanking hole; the clamping cylinder on the 90-degree turning device is opened, driving the wedge-shaped clamp to open, S2. After the central control system detects that the left and right moving module is in place and the clamping cylinder is in place, it controls the lifting cylinder of the jacking feeding device to act according to the program setting, driving the material to rise, and the movement distance of the lifting cylinder is realized by adjusting the relative position of the adjusting bolt and the adjusting nut. After the material rises, the wedge-shaped slot of the wedge-shaped clamp on the material tray, the clamping cylinder is actuated, so that the wedge-shaped clamp clamps the material on the material tray, and the lifting cylinder is reset, waiting for the next material feeding special machine to feed, thus realizing material grabbing; S3. After the central control system detects that the clamping cylinder is in place, the left and right moving module drives the 90-degree turning device to reach the position of the dispensing operation preparation, the turning cylinder in the 90-degree turning device is actuated, driving the clamping cylinder to turn, thus realizing the material turning 90 degrees, and the left and right moving module continues to act, moving the material on the wedge-shaped clamp to the position directly below the dispensing head; S4. After the central control system detects that the material is in place, the clamping cylinder two in the dispensing system actuates a pair of fixed clamps to move close to each other, clamping the two end faces of the material, the clamping cylinder one controls the wedge-shaped clamp to release the material, and after the clamping cylinder two is in place, the reduction motor rotates to drive the material to rotate at a constant speed; S5. After the central control system detects that the reduction motor starts to act, the telescopic shaft and the input rotating shaft rotate, control the dispensing valve to act, and perform quantitative or timing dispensing operation according to the preset parameters, so that the glue is vertically sprayed on the surface of the material. Cooperate with the rotation of the reduction motor, the dispensing valve can dispense the glue on the material for one turn, and the moving slide can realize the spiral dispensing operation on the surface of the material according to the thread pitch; S6. After the dispensing is completed, the reduction motor stops rotating after rotating a certain number of turns, the dispensing is completed, the clamping cylinder one actuates the wedge-shaped clamp to clamp the material again, the left and right moving module drives the 90-degree turning device to exit the dispensing position to the previous dispensing operation preparation position, the turning cylinder actuates, driving the material to turn back 90 degrees to reset, the left and right moving module actuates the material to the unloading position, and continues the subsequent operation.

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