Laser coating equipment and process for surface treatment of riveted brake disc

Abstract

The invention relates to the technical field of laser coating, in particular to laser coating equipment for surface treatment of a riveted brake disc and a process of the laser coating equipment, and solves the problems that when laser coating is carried out on the surface of an existing riveted brake disc, the surface of the brake disc is round, so that the temperature of the brake disc is inconvenient to keep stable in the continuous laser coating process, and the service life of the brake disc is prolonged. The adhesion strength of a laser coating layer and the brake disc is limited, and the two surfaces of the brake disc are not convenient to quickly treat. Comprising an opening and closing swing mechanism and a centering positioning mechanism, the centering positioning mechanism is installed at the front end of the opening and closing swing mechanism, the centering positioning mechanism is composed of a supporting preheating assembly and a positioning rotating assembly, and the positioning rotating assembly is located over the supporting preheating assembly. The brake disc in the rotating state is continuously preheated, the adhesion strength of a laser coating layer and the brake disc can be improved, the brake disc can be automatically positioned and clamped conveniently, and efficient treatment of the brake disc is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cladding, and specifically relates to a laser cladding device and process for surface treatment of riveted brake discs. Background Technique

[0002] The brake is a braking device for automotive braking and emergency braking. Brakes can be divided into disc brakes and drum brakes. Disc brakes have better heat dissipation than drum brakes, and are not prone to heat fade under high-speed braking conditions, so their high-speed braking effect is good. The disc brake is mainly composed of a brake caliper and a brake disc. The brake disc is a circular plate and is the key to braking. With the development of the automotive industry, the performance requirements for brake discs are getting higher and higher. During the production process of automotive brake discs, laser cladding treatment needs to be carried out on their surfaces to form a metal coating, so as to reduce braking dust, increase service life and improve safety.

[0003] When laser cladding is performed on the surface of a riveted brake disc, since the surface of the brake disc is circular, it is not convenient to keep the temperature of the brake disc stable during the continuous laser cladding process, resulting in limited adhesion strength between the laser cladding layer and the brake disc, and it is not convenient to quickly process both sides of the brake disc. Therefore, it does not meet the existing requirements. For this reason, we propose a laser cladding device and process for surface treatment of riveted brake discs. Summary of the Invention

[0004] The purpose of the present invention is to provide a laser cladding device and process for surface treatment of riveted brake discs, so as to solve the problems mentioned in the above background technique that when laser cladding is performed on the surface of a riveted brake disc, since the surface of the brake disc is circular, it is not convenient to keep the temperature of the brake disc stable during the continuous laser cladding process, resulting in limited adhesion strength between the laser cladding layer and the brake disc, and it is not convenient to quickly process both sides of the brake disc.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A laser cladding device for surface treatment of riveted brake discs, including an opening and closing swing mechanism and a centering and positioning mechanism. The front end of the opening and closing swing mechanism is equipped with a centering and positioning mechanism. The centering and positioning mechanism is composed of a support and preheating component and a positioning and rotating component. The positioning and rotating component is located directly above the support and preheating component. The support and preheating component includes a mounting hollow seat. The upper end of the mounting hollow seat is fixedly installed with a rotating support disc. Two waist-shaped preheating blocks are installed on one side of the rotating support disc. A positioning insertion rod is installed inside the middle of the rotating support disc. A first support spring is provided between the rotating support disc and the positioning insertion rod. The positioning and rotating assembly includes a motor mounting plate, a fifth driving motor is fixedly installed in the middle of the motor mounting plate, the output end of the fifth driving motor penetrates through the motor mounting plate and is fixedly installed with a square connecting column, a conical centering seat is installed at the bottom end of the square connecting column, and a plurality of circumferentially arranged positioning units are installed inside the conical centering seat.

[0006] Preferably, the positioning unit includes a mounting sleeve, the mounting sleeve is fixedly connected with the conical centering seat, a limiting sleeve is slidably connected inside the mounting sleeve, a conical positioning column is connected inside the limiting sleeve by a thread, a second support spring is arranged inside the conical positioning column, the conical positioning column is connected with the mounting sleeve by the second support spring, and the conical positioning column is slidably connected with the mounting sleeve through the limiting sleeve.

[0007] Preferably, a sealed coating mechanism is installed outside the opening and swinging mechanism. The sealed coating mechanism includes a support chassis, a sealed protection box is fixedly installed on the upper end surface of the support chassis, a conveyor is fixedly installed inside the front end of the sealed protection box, a first driving motor is fixedly installed on the upper part of the front end of the sealed protection box, the output end of the first driving motor penetrates through the sealed protection box and is connected with a driving screw through a coupling, a driving box is installed outside the driving screw, the driving screw is connected with the driving box by a thread, the driving box is slidably connected with the sealed protection box, a hydraulic oil cylinder is fixedly installed inside the bottom end of the driving box, a laser gun head is fixedly arranged at the output end of the hydraulic oil cylinder, and a dressing placement box is fixedly installed on one side of the driving box.

[0008] Preferably, a connection and feeding mechanism is installed at the front end of the sealed coating mechanism. The connection and feeding mechanism includes a connection installation box, the connection installation box is fixedly connected with the sealed protection box, a sealing plate is fixedly installed at the front end of the connection installation box, a second driving motor is fixedly installed in the middle of the lower end surface of the connection installation box, a connection and reversing frame is fixedly installed at the output end of the second driving motor, electric push rods are fixedly installed on the upper parts of both ends of the connection and reversing frame, and infrared sensors are installed inside both ends of the connection and reversing frame.

[0009] Preferably, the opening and swinging mechanism includes a rotation holding seat, the rotation holding seat is fixedly connected with the sealed protection box, a third driving motor is installed inside the rotation holding seat, the third driving motor is fixedly connected with the sealed protection box, a driving seat is fixedly installed at the output end of the third driving motor, a rotation box is rotatably connected inside the driving seat, a fourth driving motor is fixedly installed on one side of the rotation box, two connection gear discs are rotatably connected inside the rotation box, a connection shaft is installed in the middle of the connection gear disc, and a swinging rod is fixedly installed at one end of the connection gear disc.

[0010] Preferably, the two electric push rods and the infrared sensors are symmetrically installed relative to the receiving and rejecting rotary frame. The output ends of the two electric push rods are inserted into the inner sides of both ends of the receiving and rejecting rotary frame. The receiving and rejecting rotary frame and the two infrared sensors are connected by threads, and the two infrared sensors are coaxial.

[0011] Preferably, the front ends of the two swing rods are respectively fixedly connected to the motor mounting disc and the mounting hollow seat. The rear ends of the swing rods penetrate through the rotary box and are integrally cast with the connecting gear discs. The two connecting gear discs are connected by meshing between teeth. The connecting gear discs and the rotary box are rotationally connected by a connecting shaft. The output end of the fourth driving motor is connected to one of the connecting shafts through a coupling. The transmission seat and the rotary holding seat are rotationally connected, and the rotary holding seat, the rotary box and the transmission seat are coaxial.

[0012] Preferably, the upper end of the positioning plug rod penetrates through the mounting hollow seat, the first support spring and the rotary support disc and is inserted into the inner side of the bottom end of the conical centering seat. The positioning plug rod is slidably connected to the conical centering seat. The positioning plug rod and the mounting hollow seat are connected by the first support spring. A high-frequency induction coil is provided inside the waist-shaped preheating block; One side of the conical centering seat is provided with a knob. One end of the knob penetrates through the conical centering seat and is in close contact with the square connecting column. The knob and the conical centering seat are connected by threads. The bottom end of the square connecting column and the conical centering seat are locked and installed through the knob, and the conical centering seat and the mounting hollow seat are coaxial.

[0013] A riveted brake disc includes a brake disc main body. The brake disc main body is composed of a cast iron disc, an aluminum disc cap and a plurality of rivets arranged in a circular pattern. The upper end surface of the cast iron disc is fixedly provided with a cast iron ring body. A circular groove is provided on the side of the cast iron ring body. The bottom end of the aluminum disc cap is inserted into the inner side of the circular groove and is fixedly connected to the cast iron disc through a plurality of rivets. A plurality of mounting holes arranged in a circular pattern are provided on the upper end surface of the aluminum disc cap; A plurality of the positioning units are installed in one-to-one correspondence with the mounting holes. The bottom end of the conical positioning column is inserted into the inner side of the mounting hole. The lower end surface of the cast iron disc is in close contact with the rotary support disc. The bottom end of the conical centering seat penetrates through the aluminum disc cap and is sleeved on the outer side of the middle part of the rotary support disc.

[0014] A laser cladding process for surface treatment of a riveted brake disc includes the following steps: S1: Insert the bottom end of the aluminum disc cap into the inner side of the annular groove and install it by riveting with the cast iron disc through multiple rivets. When the surface of the cast iron disc is laser coated, place the brake disc body on the upper end surface of the conveyor, turn on the power, and convey the brake disc body to the inner side of the docking installation box through the conveyor. The inner sides of both ends of the docking turntable are connected with symmetrically installed infrared sensors through threads, so that the position of the brake disc body can be determined by the infrared sensor, so that the electric push rod can accurately clamp the brake disc body under the support of the docking turntable, and start the second transmission motor, so that the second transmission motor drives the brake disc body to rotate half a circle through the docking turntable under the support of the docking installation box; S2: Start the fourth transmission motor, so that the fourth transmission motor drives the two connecting gear discs to rotate in opposite directions through the connecting shaft under the support of the rotating box, and then the connecting gear disc drives the supporting preheating component and the positioning rotating component to swing towards each other through the swing rod, and then the supporting preheating component and the positioning rotating component automatically clamp the brake disc body in the center, and at the same time, the electric push rod separates from the brake disc body and rotates 90 degrees in the opposite direction to the docking turntable to avoid structural interference caused by the docking turntable during the laser coating process. In the process of clamping the brake disc body, the bottom end of the conical centering seat penetrates the aluminum disc cap and fits on the outer side of the middle of the rotating support disc; S3: The positioning rod is automatically positioned and plugged into the conical centering seat under the support of the first support spring, and the brake disc body can be automatically centered and clamped through the conical centering seat and the rotating support disc. At the same time, the conical positioning column is automatically plugged into the inner side of the mounting hole under the elastic support of the second support spring, so that the auxiliary positioning of the brake disc body by multiple positioning units is realized, and the fifth transmission motor is started, so that the fifth transmission motor drives the conical centering seat to rotate through the square connecting column under the support of the motor mounting disc, and then the conical centering seat can drive the brake disc body to stably rotate on the upper end surface of the rotating support disc through multiple positioning units; S4: starting the first transmission motor, so that the first transmission motor drives the transmission box to reciprocate along the X direction through the transmission screw under the support of the closed protection box, and the hydraulic cylinder drives the laser gun head to reciprocate along the Z direction under the support of the transmission box, so that the laser gun head can perform a spiral line laser coating operation on the upper surface of the cast iron disk while supplying the dressing in the dressing placement box, and a high-frequency induction coil is provided inside the waist-shaped preheating block, so that the cast iron disk can be uniformly preheated through the two waist-shaped preheating blocks to improve the adhesion strength between the laser coating layer and the cast iron disk; S5: After the upper surface of the cast iron disk is treated, start the third drive motor, so that the third drive motor drives the rotating box and the swing rod to rotate one week through the drive seat under the support of the sealed protection box. Then, the rotating box drives the centering positioning mechanism to rotate through the swing rod to realize the flipping of the brake disk body, and perform laser cladding operation on the brake disk body again to fully treat the surface of the cast iron disk. By swinging the two swing rods in the opposite direction, it is convenient to separate the support preheating component and the positioning rotating component. At the same time, clamp the brake disk body through the receiving and reversing frame and the electric push rod to facilitate the discharging operation of the brake disk body.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention can determine the position of the brake disk body through the infrared sensor, which is convenient for the electric push rod to accurately clamp the brake disk body under the support of the receiving and reversing frame. The fourth drive motor drives the two connecting sprockets to rotate in opposite directions through the connecting shaft, so that the connecting sprockets drive the support preheating component and the positioning rotating component to swing towards each other through the swing rod. The support preheating component and the positioning rotating component automatically center and clamp the brake disk body, and the positioning plug rod automatically positions and plugs into the conical centering seat. Then, the brake disk body can be automatically centered and clamped through the conical centering seat and the rotating support disk. At the same time, the conical positioning column is automatically inserted into the inner side of the mounting hole under the elastic support of the second support spring, realizing the auxiliary positioning of the brake disk body by multiple positioning units; 2. The present invention drives the conical centering seat to rotate through the fifth drive motor via the square connecting column. Then, the conical centering seat can drive the brake disk body to rotate stably on the upper surface of the rotating support disk through multiple positioning units. By adjusting the position of the laser gun head, it can meet the requirement that the laser gun head can supply the dressing in the dressing placement box and perform spiral line laser cladding operation on the upper surface of the cast iron disk. A high-frequency induction coil is provided inside the waist-shaped preheating block, so that the two waist-shaped preheating blocks can uniformly preheat the cast iron disk to improve the adhesion strength between the laser cladding layer and the cast iron disk; 3. The present invention drives the rotating box and the swing rod to rotate through the drive seat by the third drive motor. Then, the rotating box drives the centering positioning mechanism to rotate through the swing rod to realize the flipping of the brake disk body, thereby fully treating the surface of the cast iron disk. By swinging the two swing rods in the opposite direction, it is convenient to separate the support preheating component and the positioning rotating component. At the same time, clamp the brake disk body through the receiving and reversing frame and the electric push rod to facilitate the discharging operation of the brake disk body. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the whole of the present invention; Figure 2Schematic cross-sectional structure diagram of the sealed protection box of the present invention; Figure 3 Schematic cross-sectional structure diagram of the whole of the present invention; Figure 4 Schematic structure diagram of the connecting and feeding mechanism of the present invention; Figure 5 For the present invention Figure 3 Enlarged structure diagram of area A in; Figure 6 For the present invention Figure 3 Enlarged structure diagram of area B in; Figure 7 For the present invention Figure 3 Enlarged structure diagram of area C in; Figure 8 Schematic cross-sectional structure diagram of the opening and closing swing mechanism of the present invention; Figure 9 Explosion structure diagram of the centering positioning mechanism of the present invention; Figure 10 Bottom view of the centering positioning mechanism of the present invention; Figure 11 For the present invention Figure 6 Enlarged structure diagram of area D in; Figure 12 Schematic structure diagram of the brake disc main body of the present invention; Figure 13 Explosion structure diagram of the brake disc main body of the present invention.

[0017] In the figure: 1. Sealed coating mechanism; 101. Support chassis; 102. Sealed protection box; 103. Conveyor; 104. First drive motor; 105. Dressing placement box; 106. Drive box; 107. Hydraulic cylinder; 108. Drive screw; 2. Connecting and feeding mechanism; 201. Connecting installation box; 202. Plugging plate; 203. Second drive motor; 204. Connecting and rotating frame; 205. Electric push rod; 206. Infrared sensor; 3. Opening and closing swing mechanism; 301. Rotating and holding seat; 302. Swing rod; 303. Rotating box; 304. Drive seat; 305. Third drive motor; 306. Connecting gear disc; 307. Fourth drive motor; 308. Connecting shaft; 4. Centering positioning mechanism; 41. Support preheating assembly; 411. Installation hollow seat; 412. Rotating support disc; 413. Positioning plug; 414. First support spring; 415. Waist-shaped preheating block; 42. Positioning rotation assembly; 421. Motor mounting disc; 422. Fifth drive motor; 423. Square connecting column; 424. Conical centering seat; 425. Positioning unit; 426. Installation sleeve; 427. Second support spring; 428. Limiting sleeve; 429. Conical positioning column; 5. Brake disc main body; 501. Cast iron disc; 502. Aluminum disc cap; 503. Installation hole; 504. Rivet; 505. Annular groove; 506. Cast iron ring body. Detailed implementation mode

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0019] The first drive motor 104 (model YS7134), hydraulic cylinder 107 (model HOB80X250-100), second drive motor 203 (model YEJ3-112M-4), electric push rod 205 (model KOM7080), third drive motor 305 (model MDSKSRS080), fourth drive motor 307 (model GV50-3.7KW-60-S) and fifth drive motor 422 (model MDSKSRS080) mentioned in the present invention can all be obtained by purchasing from the market or customizing privately.

[0020] Please refer to Figures 1 to 3, an embodiment provided by the present invention: a laser coating device for surface treatment of riveted brake discs, including an opening and swinging mechanism 3 and a centering and positioning mechanism 4. A sealed coating mechanism 1 is installed outside the opening and swinging mechanism 3. The sealed coating mechanism 1 includes a support chassis 101. An upper end face of the support chassis 101 is fixedly installed with a sealed protection box 102. An inner side of a front end of the sealed protection box 102 is fixedly installed with a conveyor 103. An upper part of a front end of the sealed protection box 102 is fixedly installed with a first driving motor 104. An output end of the first driving motor 104 penetrates through the sealed protection box 102 and is connected with a driving screw 108 through a coupling. A driving box 106 is installed outside the driving screw 108. The driving screw 108 is threadedly connected with the driving box 106. The driving box 106 is slidably connected with the sealed protection box 102. An inner side of a bottom end of the driving box 106 is fixedly installed with a hydraulic cylinder 107. An output end of the hydraulic cylinder 107 is fixedly provided with a laser gun head. A dressing placement box 105 is fixedly installed on one side of the driving box 106, so that the first driving motor 104 drives the driving box 106 to reciprocate along the X direction through the driving screw 108, and the hydraulic cylinder 107 drives the laser gun head to reciprocate along the Z direction. Furthermore, while the laser gun head supplies dressing in the dressing placement box 105, it can perform a spiral line laser coating operation on an upper surface of a cast iron disc 501.

[0021] Please refer to Figures 2 to 5 , a feeding connection mechanism 2 is installed at a front end of the sealed coating mechanism 1. The feeding connection mechanism 2 includes a feeding connection installation box 201. The feeding connection installation box 201 is fixedly connected with the sealed protection box 102. A sealing plate 202 is fixedly installed at a front end of the feeding connection installation box 201. A second driving motor 203 is fixedly installed at a middle part of a lower end face of the feeding connection installation box 201. An output end of the second driving motor 203 is fixedly installed with a receiving and reversing frame 204. Upper parts of both ends of the receiving and reversing frame 204 are fixedly installed with electric push rods 205. By performing a rotation adjustment on the receiving and reversing frame 204, it is convenient to realize the position adjustment of the electric push rods 205 on a brake disc body 5 in a clamped state; Output ends of the two electric push rods 205 are inserted into inner sides of both ends of the receiving and reversing frame 204. Infrared sensors 206 are installed on inner sides of both ends of the receiving and reversing frame 204. The two electric push rods 205 and the infrared sensors 206 are symmetrically installed relative to the receiving and reversing frame 204. The receiving and reversing frame 204 is threadedly connected with the two infrared sensors 206. The two infrared sensors 206 are coaxial. The position of the brake disc body 5 can be determined through the infrared sensors 206, which is convenient for the electric push rods 205 to accurately clamp the brake disc body 5.

[0022] Please refer to Figures 3 to 8, the opening and closing swing mechanism 3 includes a rotation retaining seat 301. The rotation retaining seat 301 is fixedly connected to the airtight protection box 102. A third drive motor 305 is installed inside the rotation retaining seat 301. The third drive motor 305 is fixedly connected to the airtight protection box 102. A drive seat 304 is fixedly installed at the output end of the third drive motor 305. The drive seat 304 is rotatably connected to the rotation retaining seat 301. A rotation box 303 is rotatably connected inside the drive seat 304. The rotation retaining seat 301, the rotation box 303, and the drive seat 304 are coaxial, so that the third drive motor 305 drives the rotation box 303 and the swing rod 302 to rotate through the drive seat 304. Furthermore, the rotation box 303 drives the centering positioning mechanism 4 to rotate through the swing rod 302 to realize the flipping of the brake disc body 5; A fourth drive motor 307 is fixedly installed on one side of the rotation box 303. Two connecting gear discs 306 are rotatably connected inside the rotation box 303. The two connecting gear discs 306 are connected by meshing between teeth. A connecting shaft 308 is installed in the middle of the connecting gear disc 306. The output end of the fourth drive motor 307 is connected to one of the connecting shafts 308 through a coupling. The connecting gear disc 306 is rotatably connected to the rotation box 303 through the connecting shaft 308. A swing rod 302 is fixedly installed at one end of the connecting gear disc 306. The rear end of the swing rod 302 penetrates through the rotation box 303 and is integrally cast with the connecting gear disc 306, so that the fourth drive motor 307 drives the two connecting gear discs 306 to rotate in opposite directions through the connecting shaft 308. Furthermore, the connecting gear disc 306 drives the support preheating assembly 41 and the positioning rotation assembly 42 to swing towards each other through the swing rod 302.

[0023] Please refer to Figure 3 , Figure 4 and Figure 6 . A centering positioning mechanism 4 is installed at the front end of the opening and closing swing mechanism 3. The centering positioning mechanism 4 is composed of a support preheating assembly 41 and a positioning rotation assembly 42. The positioning rotation assembly 42 is located directly above the support preheating assembly 41. The brake disc body 5 can be automatically centered and clamped through the conical centering seat 424 and the rotation support disc 412; The support preheating component 41 includes a mounting hollow seat 411. A rotary support disk 412 is fixedly mounted at the upper end of the mounting hollow seat 411. Two waist-shaped preheating blocks 415 are mounted on one side of the rotary support disk 412. High-frequency induction coils are provided inside the waist-shaped preheating blocks 415. A positioning insertion rod 413 is mounted on the inner side of the middle part of the rotary support disk 412. A first support spring 414 is provided between the rotary support disk 412 and the positioning insertion rod 413. The positioning insertion rod 413 and the mounting hollow seat 411 are connected by the first support spring 414. The upper end of the positioning insertion rod 413 penetrates through the mounting hollow seat 411, the first support spring 414, and the rotary support disk 412. The cast iron disk 501 can be evenly preheated by the two waist-shaped preheating blocks 415 to improve the adhesion strength between the laser coating layer and the cast iron disk 501.

[0024] Please refer to Figure 6 、 Figure 9 and Figure 10 As shown in, the positioning and rotating component 42 includes a motor mounting disk 421. The front ends of the two swing rods 302 are respectively fixedly connected to the motor mounting disk 421 and the mounting hollow seat 411. A fifth driving motor 422 is fixedly mounted in the middle of the motor mounting disk 421. The output end of the fifth driving motor 422 penetrates through the motor mounting disk 421 and is fixedly mounted with a square connecting column 423. A conical centering seat 424 is mounted at the bottom end of the square connecting column 423. A knob is provided on one side of the conical centering seat 424. One end of the knob penetrates through the conical centering seat 424 and is in fit contact with the square connecting column 423. The knob is threadedly connected to the conical centering seat 424. The bottom end of the square connecting column 423 and the conical centering seat 424 are locked and mounted through the knob. The upper end of the positioning insertion rod 413 is inserted into the inner side of the bottom end of the conical centering seat 424. The conical centering seat 424 is coaxial with the mounting hollow seat 411. The positioning insertion rod 413 is slidably connected to the conical centering seat 424. The fifth driving motor 422 drives the conical centering seat 424 to rotate through the square connecting column 423. Furthermore, the conical centering seat 424 can drive the brake disk main body 5 to stably rotate on the upper end surface of the rotary support disk 412 through a plurality of positioning units 425.

[0025] Please refer to Figure 11, a plurality of circumferentially arranged positioning units 425 are installed inside the conical centering seat 424. The positioning unit 425 includes a mounting sleeve 426, the mounting sleeve 426 is fixedly connected to the conical centering seat 424, a limiting sleeve 428 is slidably connected inside the mounting sleeve 426, a conical positioning post 429 is threadedly connected inside the limiting sleeve 428, a second support spring 427 is provided inside the conical positioning post 429, the conical positioning post 429 is connected to the mounting sleeve 426 through the second support spring 427, the conical positioning post 429 is slidably connected to the mounting sleeve 426 through the limiting sleeve 428, and the conical positioning post 429 is automatically inserted into the inside of the mounting hole 503 under the elastic support of the second support spring 427, so as to realize the auxiliary positioning of the brake disc body 5 by the plurality of positioning units 425.

[0026] Please refer to Figure 12 and Figure 13 , a riveted brake disc, including a brake disc body 5, the brake disc body 5 is composed of a cast iron disc 501, an aluminum disc cap 502 and a plurality of circumferentially arranged rivets 504. A cast iron ring body 506 is fixedly installed on the upper end surface of the cast iron disc 501, an annular groove 505 is provided on the side of the cast iron ring body 506, the bottom end of the aluminum disc cap 502 is inserted into the inside of the annular groove 505 and is fixedly connected to the cast iron disc 501 through a plurality of rivets 504, and a plurality of circumferentially arranged mounting holes 503 are provided on the upper end surface of the aluminum disc cap 502, and the aluminum disc cap 502 and the cast iron disc 501 are riveted and installed through a plurality of rivets 504; The plurality of positioning units 425 are installed in one-to-one correspondence with the mounting holes 503, the bottom end of the conical positioning post 429 is inserted into the inside of the mounting hole 503, the lower end surface of the cast iron disc 501 is in close contact with the rotary support disc 412, the bottom end of the conical centering seat 424 penetrates through the aluminum disc cap 502 and is sleeved on the outside of the middle part of the rotary support disc 412, so as to facilitate the automatic centering of the eccentrically placed brake disc body 5 through the conical centering seat 424, and facilitate the stable rotation of the brake disc body 5 through the positioning unit 425.

[0027] A laser cladding process for the surface treatment of a riveted brake disc includes the following steps: S1: Insert the bottom end of the aluminum disc cap 502 into the inner side of the annular groove 505 and rivet and install it with the cast iron disc 501 through multiple rivets 504. When laser cladding the surface of the cast iron disc 501, place the brake disc body 5 on the upper end surface of the conveyor 103, turn on the power supply, and convey the brake disc body 5 to the inside of the connection and installation box 201 through the conveyor 103. Infrared sensors 206 symmetrically installed are threadedly connected to the inner sides of both ends of the connection and rotation frame 204, so that the position of the brake disc body 5 can be determined by the infrared sensors 206, facilitating the electric push rod 205 to accurately clamp the brake disc body 5 under the support of the connection and rotation frame 204. Start the second drive motor 203, so that the second drive motor 203 drives the brake disc body 5 to rotate half a circle through the connection and rotation frame 204 under the support of the connection and installation box 201; S2: Start the fourth drive motor 307, so that the fourth drive motor 307 drives two connecting sprockets 306 to rotate in opposite directions through the connecting shaft 308 under the support of the rotating box 303. Then, the connecting sprockets 306 drive the support preheating assembly 41 and the positioning and rotating assembly 42 to swing towards each other through the swing rod 302. Then, the support preheating assembly 41 and the positioning and rotating assembly 42 automatically clamp the brake disc body 5 in the center. At the same time, the electric push rod 205 separates from the brake disc body 5 and the connection and rotation frame 204 rotates 90 degrees in the reverse direction to avoid structural interference of the connection and rotation frame 204 during the laser cladding process. During the clamping process of the brake disc body 5, the bottom end of the conical centering seat 424 penetrates through the aluminum disc cap 502 and is sleeved on the outer side of the middle part of the rotating support disc 412; S3: Automatically position and insert the positioning rod 413 into the conical centering seat 424 under the support of the first support spring 414. Then, the brake disc body 5 can be automatically centered and clamped through the conical centering seat 424 and the rotating support disc 412. At the same time, the conical positioning column 429 is automatically inserted into the inner side of the installation hole 503 under the elastic support of the second support spring 427, realizing the auxiliary positioning of the brake disc body 5 by multiple positioning units 425. Start the fifth drive motor 422, so that the fifth drive motor 422 drives the conical centering seat 424 to rotate through the square connecting column 423 under the support of the motor mounting plate 421. Then, the conical centering seat 424 can drive the brake disc body 5 to rotate stably on the upper end surface of the rotating support disc 412 through multiple positioning units 425; S4: Start the first drive motor 104, so that the first drive motor 104 drives the drive box 106 to reciprocate along the X direction through the drive screw 108 under the support of the closed protection box 102, and the hydraulic cylinder 107 drives the laser gun head to reciprocate along the Z direction under the support of the drive box 106. Furthermore, while the dressing is supplied to the dressing placement box 105 by the laser gun head, the upper surface of the cast iron disk 501 can be subjected to a spiral line laser coating operation. A high-frequency induction coil is provided inside the waist-shaped preheating block 415, so that the cast iron disk 501 can be uniformly preheated by the two waist-shaped preheating blocks 415 to improve the adhesion strength between the laser coating layer and the cast iron disk 501; S5: After the upper surface of the cast iron disk 501 is processed, start the third drive motor 305, so that the third drive motor 305 drives the rotating box 303 and the swing rod 302 to rotate one week through the drive seat 304 under the support of the closed protection box 102. Furthermore, the rotating box 303 drives the centering positioning mechanism 4 to rotate through the swing rod 302 to realize the flipping of the brake disc body 5, and perform a laser coating operation on the brake disc body 5 again to fully process the surface of the cast iron disk 501. By swinging the two swing rods 302 in the opposite direction, it is convenient to separate the support preheating assembly 41 and the positioning rotation assembly 42. At the same time, the brake disc body 5 is clamped by the receiving and reversing frame 204 and the electric push rod 205 to facilitate the discharging operation of the brake disc body 5.

[0028] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A laser coating device for surface treatment of a riveted brake disc, comprising an opening and closing swing mechanism (3) and a centering and positioning mechanism (4), characterized in that: A centering and positioning mechanism (4) is installed at the front end of the opening and closing swing mechanism (3). The centering and positioning mechanism (4) is composed of a support preheating assembly (41) and a positioning and rotating assembly (42). The positioning and rotating assembly (42) is located directly above the support preheating assembly (41). The support preheating assembly (41) includes a mounting hollow seat (411). A rotating support disk (412) is fixedly installed at the upper end of the mounting hollow seat (411). Two waist-shaped preheating blocks (415) are installed on one side of the rotating support disk (412). A positioning insertion rod (413) is installed inside the middle of the rotating support disk (412). A first support spring (414) is arranged between the rotating support disk (412) and the positioning insertion rod (413). The positioning and rotating assembly (42) includes a motor mounting disk (421). A fifth driving motor (422) is fixedly installed in the middle of the motor mounting disk (421). The output end of the fifth driving motor (422) penetrates through the motor mounting disk (421) and is fixedly installed with a square connecting column (423). A conical centering seat (424) is installed at the bottom end of the square connecting column (423). A plurality of positioning units (425) arranged in a circular pattern are installed inside the conical centering seat (424).

2. The laser cladding device for riveting brake disc surface treatment according to claim 1, wherein: The positioning unit (425) includes a mounting sleeve (426). The mounting sleeve (426) is fixedly connected with the conical centering seat (424). A limiting sleeve (428) is slidably connected inside the mounting sleeve (426). A conical positioning column (429) is connected inside the limiting sleeve (428) by thread. A second support spring (427) is arranged inside the conical positioning column (429). The conical positioning column (429) is connected with the mounting sleeve (426) through the second support spring (427). The conical positioning column (429) is slidably connected with the mounting sleeve (426) through the limiting sleeve (428).

3. A laser cladding device for riveting brake disc surface treatment according to claim 2, characterized in that: A sealed coating mechanism (1) is installed outside the opening and closing swing mechanism (3). The sealed coating mechanism (1) includes a support chassis (101). A sealed protection box (102) is fixedly installed on the upper end surface of the support chassis (101). A conveyor (103) is fixedly installed inside the front end of the sealed protection box (102). A first driving motor (104) is fixedly installed on the upper part of the front end of the sealed protection box (102). The output end of the first driving motor (104) penetrates through the sealed protection box (102) and is connected with a driving screw rod (108) through a coupling. A driving box (106) is installed outside the driving screw rod (108). The driving screw rod (108) is connected with the driving box (106) by thread. The driving box (106) is slidably connected with the sealed protection box (102). A hydraulic oil cylinder (107) is fixedly installed inside the bottom end of the driving box (106). The output end of the hydraulic oil cylinder (107) is fixedly provided with a laser gun head. A dressing placement box (105) is fixedly installed on one side of the driving box (106).

4. A laser cladding device for surface treatment of riveted brake discs according to claim 3, characterized in that: A feeding connection mechanism (2) is installed at the front end of the sealed coating mechanism (1). The feeding connection mechanism (2) includes a feeding connection installation box (201). The feeding connection installation box (201) is fixedly connected to the sealed protection box (102). A sealing plate (202) is fixedly installed at the front end of the feeding connection installation box (201). A second driving motor (203) is fixedly installed in the middle of the lower end surface of the feeding connection installation box (201). An output end of the second driving motor (203) is fixedly installed with a feeding connection rotating frame (204). Electric push rods (205) are fixedly installed on the upper parts of both ends of the feeding connection rotating frame (204). Infrared sensors (206) are installed on the inner sides of both ends of the feeding connection rotating frame (204).

5. The laser coating device for surface treatment of riveted brake discs according to claim 4, wherein: The opening and closing swing mechanism (3) includes a rotating and holding seat (301). The rotating and holding seat (301) is fixedly connected to the sealed protection box (102). A third driving motor (305) is installed inside the rotating and holding seat (301). The third driving motor (305) is fixedly connected to the sealed protection box (102). An output end of the third driving motor (305) is fixedly installed with a driving seat (304). A rotating box (303) is rotatably connected to the inside of the driving seat (304). A fourth driving motor (307) is fixedly installed on one side of the rotating box (303). Two connecting gear disks (306) are rotatably connected to the inside of the rotating box (303). A connecting shaft (308) is installed in the middle of the connecting gear disk (306). A swing rod (302) is fixedly installed at one end of the connecting gear disk (306).

6. A laser cladding device for riveting brake disc surface treatment according to claim 5, characterized in that: The two electric push rods (205) and the infrared sensors (206) are symmetrically installed with respect to the feeding connection rotating frame (204). Output ends of the two electric push rods (205) are inserted into the inner sides of both ends of the feeding connection rotating frame (204). The feeding connection rotating frame (204) is threadedly connected to the two infrared sensors (206). The two infrared sensors (206) are coaxial.

7. A laser cladding device for surface treatment of riveted brake discs according to claim 6, characterized in that: The front ends of the two swing rods (302) are respectively fixedly connected to a motor installation disk (421) and an installation hollow seat (411). The rear ends of the swing rods (302) penetrate through the rotating box (303) and are integrally cast with the connecting gear disks (306). The two connecting gear disks (306) are connected by meshing between teeth. The connecting gear disk (306) is rotatably connected to the rotating box (303) through the connecting shaft (308). An output end of the fourth driving motor (307) is connected to one of the connecting shafts (308) through a coupling. The driving seat (304) is rotatably connected to the rotating and holding seat (301). The rotating and holding seat (301), the rotating box (303) and the driving seat (304) are coaxial.

8. A laser cladding device for riveting brake disc surface treatment according to claim 7, characterized in that: The upper end of the positioning plug rod (413) penetrates through the mounting hollow seat (411), the first support spring (414) and the rotary support disc (412) and is inserted into the inner side of the bottom end of the conical centering seat (424). The positioning plug rod (413) is slidably connected with the conical centering seat (424). The positioning plug rod (413) and the mounting hollow seat (411) are connected by the first support spring (414). The inside of the waist-shaped preheating block (415) is provided with a high-frequency induction coil; One side of the conical centering seat (424) is provided with a knob. One end of the knob penetrates through the conical centering seat (424) and is in close contact with the square connecting column (423). The knob is threadedly connected with the conical centering seat (424). The bottom end of the square connecting column (423) is fixedly installed with the conical centering seat (424) through the knob. The conical centering seat (424) and the mounting hollow seat (411) are coaxial.

9. A riveted brake disc, a laser cladding device for surface treatment of a riveted brake disc according to claim 8, comprising a brake disc body (5), characterized in that: The brake disc body (5) is composed of a cast iron disc (501), an aluminum disc cap (502) and a plurality of rivets (504) arranged in a circumferential manner. The upper end surface of the cast iron disc (501) is fixedly installed with a cast iron ring body (506). The side of the cast iron ring body (506) is provided with an annular groove (505). The bottom end of the aluminum disc cap (502) is inserted into the inner side of the annular groove (505) and is fixedly connected with the cast iron disc (501) through a plurality of rivets (504). The upper end surface of the aluminum disc cap (502) is provided with a plurality of mounting holes (503) arranged in a circumferential manner; A plurality of the positioning units (425) are installed in one-to-one correspondence with the mounting holes (503). The bottom end of the conical positioning column (429) is inserted into the inner side of the mounting hole (503). The lower end surface of the cast iron disc (501) is in close contact with the rotary support disc (412). The bottom end of the conical centering seat (424) penetrates through the aluminum disc cap (502) and is sleeved on the outer side of the middle part of the rotary support disc (412).

10. A laser cladding process for surface treatment of a riveted brake disc according to claim 9, characterized in that, Including the following steps: S1: Insert the bottom end of the aluminum disc cap (502) into the inner side of the annular groove (505) and rivet and install it with the cast iron disc (501) through a plurality of rivets (504). When laser cladding is carried out on the surface of the cast iron disc (501), place the brake disc body (5) on the upper end surface of the conveyor (103), turn on the power supply, and convey the brake disc body (5) to the inside of the connection and installation box (201) through the conveyor (103). Infrared sensors (206) symmetrically installed by threaded connection are arranged on the inner sides of both ends of the connection and rotation frame (204), so that the position of the brake disc body (5) can be determined through the infrared sensors (206), facilitating the electric push rod (205) to accurately clamp the brake disc body (5) under the support of the connection and rotation frame (204). Start the second drive motor (203), so that the second drive motor (203) drives the brake disc body (5) to rotate half a circle through the connection and rotation frame (204) under the support of the connection and installation box (201); S2: Start the fourth drive motor (307) so that the fourth drive motor (307) drives the two connecting gear discs (306) to rotate in opposite directions through the connecting shaft (308) under the support of the rotating box (303). Then, the connecting gear discs (306) drive the support preheating assembly (41) and the positioning and rotating assembly (42) to swing towards each other through the swing rod (302). Further, the support preheating assembly (41) and the positioning and rotating assembly (42) automatically center and clamp the brake disc body (5). At the same time, the electric push rod (205) separates from the brake disc body (5) and docks with the rejection turntable (204) to rotate reversely by ninety degrees to avoid structural interference of the rejection turntable (204) during the laser cladding process. During the clamping process of the brake disc body (5), the bottom end of the conical centering seat (424) penetrates through the aluminum disc cap (502) and is sleeved on the outside of the middle part of the rotating support disc (412); S3: The positioning plug rod (413) is automatically positioned and inserted into the conical centering seat (424) under the support of the first support spring (414). Then, the brake disc body (5) can be automatically centered and clamped through the conical centering seat (424) and the rotating support disc (412). At the same time, the conical positioning column (429) is automatically inserted into the inner side of the mounting hole (503) under the elastic support of the second support spring (427) to realize the auxiliary positioning of the brake disc body (5) by multiple positioning units (425). Start the fifth drive motor (422) so that the fifth drive motor (422) drives the conical centering seat (424) to rotate through the square connecting column (423) under the support of the motor mounting disc (421). Then, the conical centering seat (424) can drive the brake disc body (5) to rotate stably on the upper surface of the rotating support disc (412) through multiple positioning units (425); S4: Start the first drive motor (104) so that the first drive motor (104) drives the drive box (106) to reciprocate along the X direction through the drive screw rod (108) under the support of the closed protection box (102). And the hydraulic cylinder (107) drives the laser gun head to reciprocate along the Z direction under the support of the drive box (106). Then, the laser gun head can perform a spiral line laser cladding operation on the upper surface of the cast iron disc (501) while the dressing placement box (105) supplies the dressing. A high-frequency induction coil is provided inside the waist-shaped preheating block (415) so that the two waist-shaped preheating blocks (415) can uniformly preheat the cast iron disc (501) to improve the adhesion strength between the laser cladding layer and the cast iron disc (501); S5: After the upper surface of the cast iron disc (501) is processed, start the third drive motor (305) so that the third drive motor (305) drives the rotary box (303) and the swing rod (302) to rotate one week under the support of the closed protective box (102) through the drive seat (304). Then, the rotary box (303) drives the centering positioning mechanism (4) to rotate through the swing rod (302) to realize the flipping of the brake disc body (5), and perform laser cladding operation on the brake disc body (5) again to fully process the surface of the cast iron disc (501). By swinging the two swing rods (302) in the opposite direction, it is convenient to separate the support preheating assembly (41) from the positioning rotation assembly (42). At the same time, clamp the brake disc body (5) through the receiving and reversing frame (204) and the electric push rod (205) to facilitate the discharging operation of the brake disc body (5).

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