Brake disc sand core conveying and grinding device

Abstract

The brake disc sand core conveying and grinding device comprises a conveyor, a grinding device body and a lifting support, an electric roller is arranged on the lifting support, two elastic telescopic rods are horizontally and slidably connected to the top end of the lifting support, and fixing blocks are arranged at the ends, close to each other, of the two elastic telescopic rods correspondingly; and a driving mechanism for driving the elastic telescopic rod to slide is arranged on the lifting bracket. After the lifting support takes out the sand core, the driving mechanism drives the elastic telescopic rod to slide, and then the fixing block is driven to position and fix the sand core. The lifting support drives the sand core to descend to the operation position of the grinding device, a sand inlet in the position of a center hole of the sand core is ground, then the lifting support lifts the sand core to the position flush with the top end of the conveyor, and the electric roller is started to transfer the ground sand core to the conveyor. And the sand inlet of the sand core is polished and cleaned in the discharging and conveying processes, and no extra working procedure is needed. The device has the effect of improving the production efficiency of the sand core.

Description

Technical Field

[0001] This application relates to the field of brake disc manufacturing technology and equipment, and in particular to a brake disc sand core conveying and grinding device. Background Technology

[0002] The manufacturing of brake discs mainly involves casting and machining processes. In the casting stage, molten iron is melted in a furnace, and a core shooter is used to create a sand core that forms ventilation channels. A molding machine is then used to create a sand mold, and finally, a pouring machine is used to pour the molten iron into the sand mold containing the sand core, forming the brake disc blank. In the machining stage, a CNC lathe is used to precision machine the friction surfaces on both sides to ensure flatness and thickness. A vertical machining center is used to machine the bolt holes on the mounting surface. Finally, the disc undergoes quality inspection, marking, and is ready for shipment.

[0003] In the manufacturing process of sand cores, the core shooter mixes coated sand with a curing agent and uses compressed air to inject it at high speed into a heated core box. During filling, the sand shooting nozzle is precisely aligned with the preset sand inlet position on the core box to ensure that the molding sand fills the entire cavity that forms the ventilation channel. The sand cores manufactured in the core shooter are transferred from the core shooter to a conveyor by a robotic arm or lifting mechanism. Subsequently, the sand inlet position of the sand core, i.e., the center hole position of the sand core, is manually polished to remove any residual coated sand, thereby obtaining a finished sand core with a complete surface and accurate dimensions. Finally, the sand core is transported to the next process via a conveyor.

[0004] Regarding the aforementioned technologies, the sand cores produced by the core shooting machine will have residual coated sand at the sand inlet, which requires additional grinding to clean, thus limiting the production efficiency of the sand cores. Summary of the Invention

[0005] To improve the production efficiency of sand cores, this application provides a brake disc sand core conveying and grinding device.

[0006] This application provides a brake disc sand core conveying and grinding device, which adopts the following technical solution: A brake disc sand core conveying and grinding device includes a conveyor and a lifting bracket for receiving sand cores from a core shooter. The lifting bracket is equipped with an electric roller for conveying the sand cores onto the conveyor. It also includes a grinding device for grinding the sand cores. Two elastic telescopic rods are horizontally slidably connected to the top of the lifting bracket. Each of the two elastic telescopic rods has a fixing block at one end that is close to the other for clamping and fixing the sand core. The lifting bracket is equipped with a driving mechanism for driving the elastic telescopic rods to slide.

[0007] By adopting the above technical solution, a grinding device is installed at the position of the lifting support. After the lifting support removes the sand core from the core shooter, the drive mechanism drives the elastic telescopic rod to slide, thereby driving the fixing block to position and fix the sand core. The lifting support then lowers the sand core to the operating position of the grinding device, grinding the sand inlet at the center hole of the sand core. The lifting support then raises the sand core to a position flush with the top of the conveyor, and the electric roller is activated to transfer the ground sand core to the conveyor. Grinding and cleaning the sand inlet of the sand core during the discharge and conveying process eliminates the need for additional steps, thus improving the production efficiency of sand cores.

[0008] Optionally, the driving mechanism includes a clamping rack and a connecting rack vertically mounted on the ground. The clamping rack is fixedly connected to the elastic telescopic rod along the sliding direction of the elastic telescopic rod. A transmission rod corresponding to each clamping rack is rotatably connected to the lifting bracket. One end of the transmission rod is coaxially fixedly connected to a clamping gear that meshes with the corresponding clamping rack, and the other end is coaxially fixedly connected to a first bevel gear. A connecting rod is rotatably connected to the lifting bracket. Both ends of the connecting rod are fixedly connected to second bevel gears, and the two second bevel gears mesh with one first bevel gear respectively. A connecting gear meshing with the connecting rack is coaxially fixedly connected to the connecting rod. When the lifting bracket rises, the two fixed blocks slide away from each other; when the lifting bracket falls, the two fixed blocks slide closer to each other.

[0009] By adopting the above technical solution, the lifting bracket rises to the top to receive the sand core from the core shooter. When the lifting bracket descends, the drive mechanism automatically drives the two elastic telescopic rods to move closer together. Before reaching the position of the grinding device, two fixing blocks clamp and fix the sand core. The lifting bracket continues to descend to the height of the grinding device, where the grinding device grinds the sand core. Then, the lifting bracket rises, and the two elastic telescopic rods gradually move away under the drive mechanism, completely releasing the sand core before reaching the height of the conveyor. This achieves automatic clamping and release of the sand core during grinding and transfer.

[0010] Optionally, the fixing block is provided with an upper fixing plate to prevent the sand core from falling upward. When the fixing block abuts against the side of the sand core, the upper fixing plate abuts against the upper end face of the sand core.

[0011] By adopting the above technical solution, the upper fixing plate helps the fixing block to fix the sand core more firmly on the upper surface of the lifting bracket, preventing the sand core from shifting during the grinding process and helping to improve the grinding accuracy.

[0012] Optionally, the fixing block is provided with a lower fixing plate to prevent the sand core from falling out downwards. When the fixing block abuts against the side of the sand core, the lower fixing plate abuts against the lower end face of the sand core.

[0013] By adopting the above technical solution, the lower fixing plate helps the fixing block to fix the sand core more firmly, preventing the sand core from shifting during the grinding process and helping to improve the grinding accuracy.

[0014] Optionally, a fixing groove is formed between the upper fixing plate and the lower fixing plate, the shape and size of the fixing groove being adapted to the shape and size of the sand core, and the lower fixing plate is provided with a guide slope for guiding the sand core into the fixing groove.

[0015] By adopting the above technical solution, the shape and size of the fixing groove are matched with the shape and size of the sand core, which helps to fix and position the sand core. The end of the guide slope is lower than the upper surface of the electric roller, which helps the sand core to enter the fixing groove smoothly.

[0016] Optionally, the polishing device includes a polishing motor and a polishing switch for controlling the start and stop of the polishing motor. The lifting bracket is equipped with a switch telescopic rod, and the polishing switch is located on the moving path of the switch telescopic rod. When the switch telescopic rod abuts against the button of the polishing switch, the polishing motor starts; when the switch telescopic rod disengages from the button of the polishing switch, the polishing motor stops.

[0017] By adopting the above technical solution, the automatic start and stop of the grinding motor is realized. The grinding motor is automatically turned off when grinding is not in use, which helps to save energy and control production costs.

[0018] In summary, this application includes at least one of the following beneficial technical effects: Normally, after the sand core is made in the core shooting machine, it needs to be transported separately to the grinding area to clean the sand inlet. In this application, a grinding device is set in the lifting bracket. After the lifting bracket takes out the sand core, the drive mechanism drives the elastic telescopic rod to slide and drive the fixing block to position and fix the sand core. The lifting bracket and the grinding device work together to grind the sand inlet at the center hole of the sand core. Then the sand core is transported to the conveyor. During the discharge and conveying process, the sand inlet of the sand core is ground and cleaned. No additional process is required, which helps to improve the production efficiency of sand cores. The grinding device includes a grinding motor and a grinding switch. When the lifting bracket descends to the position where the switch telescopic rod abuts against the button of the grinding switch, the grinding motor starts to grind the sand core. When the lifting bracket rises to the position where the switch telescopic rod disengages from the button of the grinding switch, the grinding motor shuts off. This realizes the automatic start and stop of the grinding motor during the lifting process. The grinding motor is automatically turned off when grinding is not in use, which helps to save energy and control production costs. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0020] Figure 2 This is a schematic diagram illustrating the structure of the grinding device in an embodiment of this application.

[0021] Figure 3 This is an exploded schematic diagram used to illustrate the elastic telescopic rod in the embodiments of this application.

[0022] Figure 4 This is a schematic diagram illustrating the structure of the drive mechanism in an embodiment of this application.

[0023] Figure 5 This is a schematic diagram of the structure of the fixing block used in the embodiments of this application.

[0024] Figure 6 This is an exploded view of the switch telescopic rod used in the embodiments of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Conveyor; 2. Lifting support; 21. Electric roller; 22. Transmission rod; 221. Clamping gear; 222. First bevel gear; 23. Linking rod; 231. Second bevel gear; 232. Linking gear; 24. Switch telescopic rod; 241. Second fixed rod; 242. Second movable rod; 243. Second elastic element; 25. Support bracket; 26. Lifting cylinder; 3. Grinding device; 31. Grinding motor; 32. Grinding switch; 4. Elastic telescopic rod; 41. Fixed block; 411. Upper fixed plate; 412. Lower fixed plate; 413. Fixed groove; 414. Guide slope; 42. First fixed rod; 43. First movable rod; 44. First elastic element; 5. Drive mechanism; 51. Clamping rack; 52. Linking rack. Detailed Implementation

[0026] The present application will be further described in detail below with reference to all the accompanying drawings.

[0027] This application discloses a brake disc sand core conveying and grinding device 3.

[0028] Reference Figure 1 and Figure 2A brake disc sand core conveying and grinding device 3 includes a conveyor 1, a grinding device 3, and a lifting bracket 2. The lifting bracket 2 includes a receiving bracket 25 for receiving the sand core and a lifting cylinder 26 for driving the receiving bracket 25 to rise and fall. The lifting bracket 2 is located at the output port of a core shooter, and the sand core produced by the core shooter can be taken out by raising and lowering the lifting bracket 2. The grinding device 3 is used to grind the sand core at the sand inlet, which is located inside the lifting bracket 2. Two elastic telescopic rods 4 are horizontally slidably connected to the top of the lifting bracket 2. The length direction of the two elastic telescopic rods 4 is set on the same straight line, and each of the two elastic telescopic rods 4 has a fixing block 41 at the end close to each other. The shape of the two fixing blocks 41 is adapted to the side of the sand core for clamping and fixing the sand core. A driving mechanism 5 is installed on the lifting bracket 2, which can drive the elastic telescopic rods 4 to slide, thereby switching the locking and releasing state of the sand core. After the lifting bracket 2 removes the sand core, the drive mechanism 5 drives the elastic telescopic rod 4 to slide, which in turn drives the fixing block 41 to position and fix the sand core. The lifting bracket 2 drives the sand core down to the operating position of the grinding device 3, and grinds the sand inlet at the center hole of the sand core. This achieves grinding and cleaning of the sand inlet position of the sand core during the discharge and conveying process, without the need for additional procedures, which helps to improve the production efficiency of the sand core.

[0029] Reference Figure 1 and Figure 2 An electric roller 21 is installed on the lifting support 2, and the lifting support 2 is located at the starting end of the conveyor 1. When the upper surface of the receiving support 25 of the lifting support 2 is flush with the upper surface of the conveyor 1, the electric roller 21 is activated to transfer the sand core on the lifting support 2 to the conveyor 1. After the sand core is ground, the lifting support 2 raises the sand core to a position flush with the top of the conveyor 1, and the electric roller 21 is activated to transfer the ground sand core to the conveyor 1 for the next process.

[0030] Reference Figure 3 and Figure 4 The elastic telescopic rod 4 includes a first fixed rod 42, a first movable rod 43, and a first elastic element 44 coaxially arranged. The first fixed rod 42 is fixedly connected to the fixed block 41, and the first movable rod 43 is fixedly connected to the clamping rack 51. One end of the first movable rod 43 extends into the first fixed rod 42 and is slidably connected to the first fixed rod 42. One end of the first elastic element 44 is located inside the first fixed rod 42, and the other end extends into the first movable rod 43. In this embodiment, the first elastic element 44 is a spring.

[0031] Reference Figure 4The drive mechanism 5 includes a clamping rack 51 and a connecting rack 52. The connecting rack 52 is vertically mounted on the ground and fixedly connected to the ground. The clamping rack 51 is fixedly connected to the elastic telescopic rod 4 and is arranged along the sliding direction of the elastic telescopic rod 4. Two transmission rods 22, corresponding one-to-one with the clamping racks 51, are rotatably connected to the receiving bracket 25. Each transmission rod 22 is horizontally mounted, with one end coaxially fixedly connected to a clamping gear 221 that meshes with the corresponding clamping rack 51, and the other end coaxially fixedly connected to a first bevel gear 222. A second bevel gear 231, meshing with the first bevel gear 222, is rotatably connected to the receiving bracket 25. A connecting rod 23 is rotatably connected to the lifting bracket 2, with both ends of the connecting rod 23 coaxially fixedly connected to the second bevel gear 231 on the same side. A connecting gear 232, meshing with the connecting rack 52, is coaxially fixedly connected to the connecting rod 23.

[0032] Reference Figure 2 and Figure 4 The receiving bracket 25 of the lifting support 2 rises to the top to receive the sand core from the core shooter. When the receiving bracket 25 descends, the connecting rack 52 drives the connecting gear 232 to rotate, which in turn drives the connecting rod 23 to rotate. The connecting rod 23 drives the second bevel gears 231 at both ends to rotate. The second bevel gears 231 drive the first bevel gear 222 to rotate, which in turn drives the transmission rod 22 to rotate. The rotating rod drives the clamping gear 221 to rotate. The rotating clamping gear 221 drives the clamping rack 51 to move, which in turn drives the two elastic telescopic rods 4 to move closer to each other. Before reaching the position of the grinding device 3, the two fixing blocks 41 clamp and fix the sand core. The receiving bracket 25 continues to descend to the height of the grinding device 3, and the grinding device 3 grinds the sand core. Then the receiving bracket 25 rises, the connecting gear 232 rotates in the opposite direction, and the two elastic telescopic rods 4 gradually move away from each other under the drive of the drive mechanism 5. The fixing blocks 41 disengage from the sand core before reaching the height of the conveyor 1, realizing the automatic clamping and release of the sand core during the grinding and transfer process.

[0033] Reference Figure 2 and Figure 5 When the grinding device 3 grinds the sand core, an interaction force is formed between the sand core and the grinding device 3. The sand core is subjected to an upward force from the grinding device 3. An upper fixing plate 411 is fixedly connected to the fixing block 41. When the fixing block 41 abuts against the side of the sand core, the upper fixing plate 411 abuts against the upper end face of the sand core. This helps the fixing block 41 to fix the sand core more firmly on the upper surface of the lifting bracket 2, which can prevent the sand core from falling out upward or displacing, and helps to improve the grinding accuracy of the sand core.

[0034] Reference Figure 4 and Figure 5The fixing block 41 is provided with a lower fixing plate 412 to prevent the sand core from falling downwards. When the fixing block 41 abuts against the side of the sand core, the lower fixing plate 412 abuts against the lower end face of the sand core. A fixing groove 413 is formed between the upper fixing plate 411 and the lower fixing plate 412. The shape and size of the fixing groove 413 are adapted to the shape and size of the sand core. The lower fixing plate 412 is provided with a guide slope 414 for guiding the sand core into the fixing groove 413. This helps to fix and position the sand core. The end of the guide slope 414 is lower than the upper surface of the electric roller 21, which helps the sand core to enter the fixing groove 413 smoothly.

[0035] Reference Figure 2 and Figure 6 The grinding device 3 includes a grinding motor 31 and a grinding switch 32 for controlling the start and stop of the grinding motor 31. A switch telescopic rod 24 is fixedly connected to the lifting bracket 2. The grinding switch 32 is located on the moving path of the switch telescopic rod 24. When the switch telescopic rod 24 abuts against the button of the grinding switch 32, the grinding motor 31 starts; when the switch telescopic rod 24 disengages from the button of the grinding switch 32, the grinding motor 31 stops. This achieves automatic start and stop of the grinding motor 31, automatically shutting it off when grinding is not in use, which helps save energy and control production costs.

[0036] Reference Figure 4 and Figure 6 The switch telescopic rod 24 includes a second fixed rod 241, a second movable rod 242, and a second elastic member 243 coaxially arranged. The second fixed rod 241 is fixedly connected to the receiving bracket 25. One end of the second movable rod 242 extends into the second fixed rod 241 and is slidably connected to the second fixed rod 241. One end of the second elastic member 243 is located inside the second fixed rod 241, and the other end extends into the second movable rod 242. In this embodiment, the second elastic member 243 is a spring.

[0037] The implementation principle of the brake disc sand core conveying and grinding device 3 in this application embodiment is as follows: The sand core is received by the lifting bracket 2 set at the output port of the core shooter. During the descent of the receiving bracket 25 driven by the lifting cylinder 26, the linkage rack 52 drives the linkage gear 232 to rotate. Through the bevel gear set and the transmission rod 22, the clamping rack 51 is moved, so that the two elastic telescopic rods 4 are brought closer to each other, and the fixing block 41 clamps the sand core. The fixing block 41 is provided with a fixing groove 413 formed by the upper fixing plate 411 and the lower fixing plate 412 and a guide slope 414 to ensure that the sand core is firmly positioned and to prevent displacement. When descending to the grinding position, the switch telescopic rod 24 triggers the grinding switch 32 to start the grinding motor 31 to automatically grind the sand core inlet. After grinding is completed, the receiving bracket 25 rises, the linkage mechanism reverses, the elastic telescopic rods 4 reset and release the sand core, and the electric roller 21 transfers the sand core to the conveyor 1. The entire process achieves automatic clamping, precise grinding, and efficient transfer of sand cores during the discharge, grinding, and conveying stages, effectively integrating multiple processes, improving production efficiency, and reducing energy consumption.

[0038] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A brake disc sand core conveying and grinding device, comprising a conveyor (1) and a lifting bracket (2) for receiving sand cores from a core shooter, wherein the lifting bracket (2) is provided with an electric roller (21) for conveying the sand cores onto the conveyor (1), characterized in that: It also includes a grinding device (3) for grinding sand cores. The top of the lifting bracket (2) is horizontally slidably connected to two elastic telescopic rods (4). The ends of the two elastic telescopic rods (4) that are close to each other are provided with fixing blocks (41) for clamping and fixing the sand cores. The lifting bracket (2) is provided with a driving mechanism (5) for driving the elastic telescopic rods (4) to slide.

2. The brake disc sand core conveying and grinding device according to claim 1, characterized in that: The drive mechanism (5) includes a clamping rack (51) and a connecting rack (52) vertically mounted on the ground. The clamping rack (51) is fixedly connected to the elastic telescopic rod (4) along the sliding direction of the elastic telescopic rod (4). A transmission rod (22) corresponding to each clamping rack (51) is rotatably connected to the lifting bracket (2). One end of the transmission rod (22) is coaxially fixedly connected to a clamping gear (221) meshing with the corresponding clamping rack (51), and the other end is coaxially fixedly connected to a first bevel gear (222). A connecting rod (23) is rotatably connected to the lifting support (2). A second bevel gear (231) is fixedly connected to both ends of the connecting rod (23). The two second bevel gears (231) mesh with a first bevel gear (222) respectively. A connecting gear (232) meshing with a connecting rack (52) is coaxially fixedly connected to the connecting rod (23). When the lifting support (2) rises, the two fixed blocks (41) slide away from each other; when the lifting support (2) falls, the two fixed blocks (41) slide closer to each other.

3. The brake disc sand core conveying and grinding device according to claim 1, characterized in that: The fixing block (41) is provided with an upper fixing plate (411) to prevent the sand core from falling out upward. When the fixing block (41) abuts against the side of the sand core, the upper fixing plate (411) abuts against the upper end face of the sand core.

4. The brake disc sand core conveying and grinding device according to claim 3, characterized in that: The fixing block (41) is provided with a lower fixing plate (412) to prevent the sand core from falling out downwards. When the fixing block (41) abuts against the side of the sand core, the lower fixing plate (412) abuts against the lower end face of the sand core.

5. The brake disc sand core conveying and grinding device according to claim 4, characterized in that: A fixing groove (413) is formed between the upper fixing plate (411) and the lower fixing plate (412). The shape and size of the fixing groove (413) are adapted to the shape and size of the sand core. The lower fixing plate (412) is provided with a guide slope (414) for guiding the sand core into the fixing groove (413).

6. The brake disc sand core conveying and grinding device according to claim 1, characterized in that: The polishing device (3) includes a polishing motor (31) and a polishing switch (32) for controlling the opening and closing of the polishing motor (31). The lifting bracket (2) is provided with a switch telescopic rod (24). The polishing switch (32) is located on the moving path of the switch telescopic rod (24). When the switch telescopic rod (24) abuts against the button of the polishing switch (32), the polishing motor (31) starts; when the switch telescopic rod (24) disengages from the button of the polishing switch (32), the polishing motor (31) shuts off.

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