Centerless grinding machine with automatic feeding and discharging mechanism

Abstract

The utility model provides a centerless grinding machine with an automatic feeding and discharging mechanism, belongs to the technical field of grinding machines, and solves the problem that a numerical control grinding machine needs to be shut down to manually replace workpieces. The device comprises a device body, a conveying device and a mechanical arm, a workbench is arranged in the device body, the conveying device is installed on a moving table, the conveying device comprises a body, a first row tooth and a second row tooth are installed on the body, a workpiece is placed between the first row tooth and the second row tooth, the first row tooth is fixed to the body, and an installation block is arranged in the body. A feeding mechanism is installed on the installation block, a mechanical arm is installed at the tail end of the feeding mechanism and comprises an installation frame, a cross beam is installed on the installation frame, a sliding plate is arranged on the cross beam, an installation sliding block is arranged on the sliding plate, a support is installed on the installation sliding block, a first sliding rail is arranged on the support, and a mechanical claw is arranged on the support. The automatic feeding and discharging device has the advantages that the conveying device and the mechanical arm are arranged, automatic feeding and discharging of workpieces on the grinding machine are achieved, and production efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of grinding machines, and relates to a centerless grinding machine, and particularly to a centerless grinding machine with an automatic loading and unloading mechanism. Background Technology

[0002] Grinding machines are machine tools that use abrasive wheels to grind the surface of workpieces. Most grinding machines use high-speed rotating grinding wheels for grinding, while a few use other abrasive wheels and free abrasives such as honing machines, ultra-precision machining tools, belt grinders, lapping machines, and polishing machines.

[0003] Existing CNC grinding machines typically require workers to load and unload materials, but this method is time-consuming and labor-intensive. When workers are changing parts to be processed, the grinding machine needs to be stopped to complete the change operation for the workers' safety. During this time, the grinding machine cannot work, which reduces production efficiency.

[0004] For example, a six-axis CNC grinding machine with application number 201921559784.6 includes a base, on which a cutting device and a clamping device are provided. The cutting output end of the cutting component is perpendicularly arranged in the clamping direction of the output end of the clamping device. The clamping device is provided with a clamping part that rotates around a vertical axis. The component is processed by the cutting device through the rotation of the clamping part around the vertical axis.

[0005] The aforementioned patent uses the rotating shaft of the cutting device itself to place the cutting device inside, which saves energy, improves safety and increases service life. However, the equipment does not have an automatic loading and unloading structure, and manual loading and unloading is required after the machine is stopped, resulting in low production efficiency. Utility Model Content

[0006] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a centerless grinding machine with an automatic loading and unloading structure.

[0007] This utility model can be achieved through the following technical solution: A centerless grinder with an automatic loading and unloading mechanism, comprising a main body, a conveying device, and a robotic arm. The main body contains a worktable, and the conveying device is mounted on a moving platform. The conveying device includes a main body, on which are mounted a first rack and a second rack. A workpiece is placed between the first rack and the second rack. The first rack is fixed to the main body. A mounting block is provided within the main body, and a feeding mechanism is mounted on the mounting block. The feeding mechanism contacts the second rack, and a robotic arm is mounted at the end of the feeding mechanism. The robotic arm includes a mounting frame, on which a crossbeam is mounted. A sliding plate is mounted on the crossbeam, and a mounting slider is mounted on the sliding plate. A bracket is mounted on the mounting slider, and a slide rail is mounted on the bracket. A robotic claw is mounted on the bracket, and a buffer plate is mounted on the robotic claw.

[0008] In the aforementioned centerless grinding machine with an automatic loading and unloading mechanism, the feeding mechanism includes a fixed plate, a lifting cylinder is mounted on the fixed plate, a lifting platform is mounted on the lifting cylinder, a push-pull cylinder is mounted on the lifting platform, and a sliding plate is mounted on the push-pull cylinder.

[0009] In the aforementioned centerless grinder with an automatic loading and unloading mechanism, the lifting platform is provided with a second slide rail, and the slide plate is slidably connected to the second slide rail.

[0010] In the aforementioned centerless grinding machine with an automatic loading and unloading mechanism, a fixing strip is installed at the bottom of the second gear rack, and a groove is provided on the fixing strip, with the sliding plate closely attached to the groove.

[0011] In the aforementioned centerless grinding machine with an automatic loading and unloading mechanism, several buffer blocks are installed on the lifting platform.

[0012] In the aforementioned centerless grinding machine with an automatic loading and unloading mechanism, a motor is fixed to one end of the crossbeam, a gear is installed at the output of the motor, the gear is connected to a toothed belt, the toothed belt is connected to a gear, and the toothed belt is fixedly connected to a mounting slider.

[0013] In the aforementioned centerless grinder with an automatic loading and unloading mechanism, a buffer cylinder is installed on the support, the buffer cylinder is connected to a mechanical gripper, and a protective net is fixed on the mounting frame.

[0014] In the aforementioned centerless grinding machine with an automatic loading and unloading mechanism, a precision locking block is provided at one end of the gear rack, and a proximity switch is provided next to the precision locking block.

[0015] In the aforementioned centerless grinding machine with an automatic loading and unloading mechanism, a discharge conveyor belt is provided below the main body, and a discharge frame is installed at the end of the discharge conveyor belt.

[0016] In the aforementioned centerless grinding machine with an automatic loading and unloading mechanism, a support plate is provided under the moving table, and rollers are provided between the support plate and the moving table. Guide grooves are provided on the rollers, and corresponding guide strips are provided on the support plate.

[0017] Compared with the prior art, the advantages of this utility model are: it is equipped with a conveying device and a robotic arm, and the push-pull cylinder in the feeding mechanism drives the slide plate to reciprocate, which indirectly drives the gear rack to reciprocate, thereby realizing the transportation of the workpiece; it is convenient for the robotic arm to pick up the workpiece and place it on the worktable, realizing the automatic loading and unloading of the grinding machine. Attached Figure Description

[0018] Figure 1 It is a 3D diagram of the automatic loading and unloading robotic arm for CNC machine tools;

[0019] Figure 2 This is a 3D view of the feeding mechanism of the automatic loading and unloading robotic arm for CNC machine tools;

[0020] Figure 3 This is a front view of the automatic loading and unloading robotic arm for CNC machine tools;

[0021] The components include: 1. Equipment body; 11. Workbench; 2. Conveying device; 21. Main body; 211. Tooth rack one; 211a. Precision clamping block; 212. Tooth rack two; 212a. Fixing strip; 212b. Groove; 213. Workpiece; 214. Mounting block; 3. Moving table; 31. Roller; 311. Guide groove; 4. Feeding mechanism; 41. Fixing plate; 411. Lifting cylinder; 42. Lifting platform; 421. Push-pull cylinder; 422. Slide rail two; 423. 43. Buffer block; 5. Slide plate; 6. Robotic arm; 7. Mounting frame; 8. Protective net; 9. Crossbeam; 10. Sliding plate; 11. Mounting slider; 12. Bracket; 13. Slide rail; 14. Buffer cylinder; 15. Mechanical claw; 16. Buffer plate; 17. Motor; 18. Gear; 19. Toothed belt; 10. Gear; 10. Proximity switch; 11. Discharge conveyor belt; 12. Discharge frame; 13. Support plate; 14. Guide bar. Detailed Implementation

[0022] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0023] like Figures 1 to 3 As shown, this utility model can be implemented through the following embodiments: A centerless grinder with an automatic loading and unloading mechanism includes a main body 211, a conveying device 2, and a robotic arm 5. A worktable 11 is provided inside the main body 211. The conveying device 2 is mounted on a moving table 3. The conveying device 2 includes a main body 21, on which a first toothed rack 211 and a second toothed rack 212 are mounted. A workpiece 213 is placed between the first toothed rack 211 and the second toothed rack 212. The first toothed rack 211 is fixed to the main body 21. A mounting block 214 is provided inside the main body 21. A feeding mechanism 4 is installed on the mounting block 214. The feeding mechanism 4 is in contact with the toothed rack 212. A robotic arm 5 is installed at the end of the feeding mechanism 4. The robotic arm 5 includes a mounting frame 51. A crossbeam 52 is installed on the mounting frame 51. A sliding plate 521 is provided on the crossbeam 52. A mounting slider 522 is provided on the sliding plate 521. A bracket 523 is installed on the mounting slider 522. A slide rail 523a is provided on the bracket 523. A robotic claw 524 is provided on the bracket 523. A buffer plate 524a is provided on the robotic claw 524.

[0024] The first toothed rack 211 and the second toothed rack 212 are used to transport the workpiece 213 to the bottom of the robotic arm 5 under the movement of the feeding mechanism 4, so that the robotic arm 5 can grasp it; the crossbeam 52 and the sliding plate 521 inside the robotic arm 5 are used for the lateral movement of the support 523 and the robotic claw 524; the first slide rail 523a on the support 523 is used to drive the robotic claw 524 to move up and down, so as to complete the loading and unloading of the grinding machine; the first toothed rack 211 is fixed to the main body 21, so that the second toothed rack 212 realizes the transportation of the workpiece 213 under the movement of the feeding mechanism 4, while the first toothed rack 211 undertakes the function of receiving the workpiece 213; the buffer plate 524a is used to buffer the workpiece 213 when the robotic claw 524 grasps it, so as to prevent the workpiece 213 from being damaged due to friction between the robotic claw 524 and the workpiece 213.

[0025] like Figure 1 and Figure 3 As shown, the feeding mechanism 4 includes a fixed plate 41, on which a lifting cylinder 411 is mounted. A lifting platform 42 is mounted on the lifting cylinder 411, and a push-pull cylinder 421 is mounted on the lifting platform 42. A sliding plate 43 is mounted on the push-pull cylinder 421. The lifting cylinder 411 controls the movement of the lifting platform 42, facilitating the connection between the sliding plate 43 and the first and second gear racks 211 and 212, preventing the workpiece 213 from falling off during the gripping process of the mechanical claw 524. The push-pull cylinder 421 enables the reciprocating motion of the sliding plate 43, allowing the first and second gear racks 211 and 212 to continuously transport the workpiece 213.

[0026] like Figure 3 As shown, the lifting platform 42 is equipped with a second slide rail 422, and the slide plate 43 is slidably connected to the second slide rail 422. The second slide rail 422 guides the slide plate 43, causing the slide plate 43 to perform a linear reciprocating motion.

[0027] like Figure 3 As shown, several buffer blocks 423 are installed on the lifting platform 42. The buffer blocks 423 are used to contact the slide plate 43 and absorb the impact from the slide plate 43, preventing the connection between the slide plate 43 and the push-pull cylinder 421 from being subjected to excessive force during repeated movements, which would cause the slide plate 43 to separate from the push-pull cylinder 421.

[0028] like Figure 3 As shown, a fixing strip 212a is installed at the bottom of the gear rack 212, and a groove 212b is provided on the fixing strip 212a. The slide plate 43 is in close contact with the groove 212b. The fixing strip 212a is used to contact the slide plate 43. During the reciprocating motion of the slide plate 43 due to the push-pull cylinder 421, the fixing strip 212a also reciprocates, thereby causing the gear rack 212 to reciprocate, which in turn drives the workpiece 213 to move forward.

[0029] like Figure 2As shown, a motor 6 is fixed to one end of the crossbeam 52. A gear 61 is installed at the output end of the motor 6. The gear is connected to a toothed belt 62, which is connected to a gear 63. The toothed belt 62 is fixedly connected to the mounting slider 522. The gear 61 rotates with the motor, thereby driving the toothed belt 62 to move. The gear 63 drives the toothed belt 62 to return, so that the toothed belt 62 can drive the mounting slider 522 to move laterally, thereby allowing the mechanical gripper 524 to carry the workpiece 213 to the worktable 11 for loading.

[0030] like Figure 2 As shown, a buffer cylinder 523b is installed on the bracket 523, and the buffer cylinder 523b is connected to the mechanical gripper 524. A protective net 511 is fixed on the mounting bracket 51. The buffer cylinder 523b is used to buffer the mechanical gripper 524 when it grips the workpiece 213, preventing the mechanical gripper 524 from using excessive force and damaging the workpiece 213. The protective net 511 is used to protect the robotic arm 5, preventing flying objects from colliding with the robotic arm 5 and causing damage to the robotic arm 5.

[0031] like Figure 3 As shown, a precision locking block 211a is provided at the end of the toothed rack 211, and a proximity switch 7 is provided next to the precision locking block 211a. The precision locking block 211a is used to fix the position of the workpiece 213 when it is gripped by the mechanical claw 524, to prevent the workpiece 213 from failing to be gripped due to positional deviation, which would reduce production efficiency. The proximity switch 7 is used to start the robotic arm 5 and stop the feeding mechanism 4 when the workpiece 213 is on the precision locking block 211a, to prevent the workpiece 213 from falling off the conveying device 2 due to the continuous operation of the feeding mechanism 4.

[0032] like Figure 1 As shown, a discharge conveyor belt 8 is provided below the main body 21, and a discharge frame 81 is installed at the end of the discharge conveyor belt 8. The discharge conveyor belt 8 is used by the mechanical gripper 524 to send the workpiece 213 to the discharge frame 81 after unloading. Under the influence of gravity, the workpiece 213 slides down from the discharge frame 81 and falls into the workpiece 213 box.

[0033] like Figure 1 As shown, a support plate 9 is provided under the moving table 3, and rollers 31 are provided between the support plate 9 and the moving table 3. Guide grooves 311 are provided on the rollers 31, and corresponding guide bars 91 are provided on the support plate 9. The guide bars 91 on the support plate 9 and the rollers 31 installed under the moving table 3 cooperate to realize the linear movement of the moving table 3. This facilitates the separation of the conveying device 2 and the main body 211 when the grinding machine is stopped, or it can be used to replace other workpieces 213 that need to be processed, so that the main body 211 can process a wider variety of workpieces 213.

[0034] The working principle of this utility model is as follows: The main body 211 of the equipment is started, and the workpiece 213 is placed on the first toothed rack 211 and the second toothed rack 212 of the conveying device 2. Then, the feeding mechanism 4 is started, and the lifting cylinder 411 inside the feeding mechanism 4 raises the lifting platform 42, causing the slide plate 43 to contact the groove 212b on the fixing bar 212a. Subsequently, the slide plate 43 reciprocates under the drive of the push-pull cylinder 421, which in turn drives the second toothed rack 212 to reciprocate. The workpiece 213 moves forward along the second toothed rack 212 under the drive of the second toothed rack 212. After workpiece 213 enters the precision clamping block 211a, proximity switch 7 is turned on, and the motor inside robotic arm 5 is started, causing mounting slider 522 to approach the conveying mechanism. The mechanical claw 524 on bracket 523 slides down along slide rail 1 523a and clamps workpiece 213, placing workpiece 213 on worktable 11. The processed workpiece 213 is placed on discharge conveyor belt 8 by mechanical claw 524. Discharge conveyor belt 8 sends workpiece 213 to discharge frame 81, and workpiece 213 slides down with discharge frame 81 under gravity into workpiece 213 box.

[0035] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0036] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A centerless grinding machine with an automatic loading and unloading mechanism, comprising a main body (1), a conveying device (2), and a robotic arm (5), wherein a worktable (11) is provided inside the main body (1), characterized in that, The conveying device (2) is mounted on the moving platform (3). The conveying device (2) includes a main body (21). A toothed rack (211) and a toothed rack (212) are mounted on the main body (21). A workpiece (213) is placed between the toothed rack (211) and the toothed rack (212). The toothed rack (211) is fixed on the main body (21). An installation block (214) is provided inside the main body (21). A feeding mechanism (4) is mounted on the installation block (214). The feeding mechanism (4) is in contact with the toothed rack (212). (4) A robotic arm (5) is installed at the end. The robotic arm (5) includes a mounting frame (51), a crossbeam (52) is installed on the mounting frame (51), a sliding plate (521) is provided on the crossbeam (52), a mounting slider (522) is provided on the sliding plate (521), a bracket (523) is installed on the mounting slider (522), a slide rail (523a) is provided on the bracket (523), a robotic claw (524) is provided on the bracket (523), and a buffer plate (524a) is installed on the robotic claw (524).

2. A centerless grinding machine with an automatic loading and unloading mechanism according to claim 1, characterized in that, The feeding mechanism (4) includes a fixed plate (41), a lifting cylinder (411) is installed on the fixed plate (41), a lifting platform (42) is installed on the lifting cylinder (411), a push-pull cylinder (421) is installed on the lifting platform (42), and a sliding plate (43) is installed on the push-pull cylinder (421).

3. A centerless grinding machine with an automatic loading and unloading mechanism according to claim 2, characterized in that, The lifting platform (42) is provided with a slide rail (422), and the slide plate (43) is slidably connected to the slide rail (422).

4. A centerless grinding machine with an automatic loading and unloading mechanism according to claim 2, characterized in that, The bottom of the second toothed rack (212) is equipped with a fixing strip (212a), and a groove (212b) is provided on the fixing strip (212a). The sliding plate (43) is in close contact with the groove (212b).

5. A centerless grinding machine with an automatic loading and unloading mechanism according to claim 2, characterized in that, Several buffer blocks (423) are installed on the lifting platform (42).

6. A centerless grinding machine with an automatic loading and unloading mechanism according to claim 1, characterized in that, One end of the crossbeam (52) is fixed with a motor (6), and the output of the motor (6) is equipped with a gear (61). The gear (61) is connected to a toothed belt (62), and the toothed belt (62) is connected to a gear (63). The toothed belt (62) is fixedly connected to the mounting slider (522).

7. A centerless grinding machine with an automatic loading and unloading mechanism according to claim 1, characterized in that, A buffer cylinder (523b) is provided on the bracket (523), the buffer cylinder (523b) is connected to a mechanical claw (524), and a protective net (511) is fixed on the mounting frame (51).

8. A centerless grinding machine with an automatic loading and unloading mechanism according to claim 1, characterized in that, A precision locking block (211a) is provided at the end of the toothed section (211), and a proximity switch (7) is provided next to the precision locking block (211a).

9. A centerless grinding machine with an automatic loading and unloading mechanism according to claim 1, characterized in that, A discharge conveyor belt (8) is provided below the main body (21), and a discharge frame (81) is installed at the end of the discharge conveyor belt (8).

10. A centerless grinding machine with an automatic loading and unloading mechanism according to claim 1, characterized in that, A support plate (9) is provided under the moving platform (3), and a roller (31) is provided between the support plate (9) and the moving platform (3). A guide groove (311) is provided on the roller (31), and a corresponding guide strip (91) is provided on the support plate (9).

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