Graphite electrode appearance detection sample fixing device

Abstract

The utility model relates to the technical field of graphite electrode appearance detection, in particular to a graphite electrode appearance detection sample fixing device, which is characterized in that a graphite electrode is conveyed to a driving mechanism through a conveying mechanism, so that the driving mechanism drives the graphite electrode to rotate, and meanwhile, the appearance of the graphite electrode is detected through a detection mechanism. Then unqualified positions are marked through the marking mechanism, then the detected graphite electrodes are discharged through the conveying mechanism, and meanwhile the other group of undetected graphite electrodes are conveyed to the driving mechanism, so that the practicability of the equipment is improved; comprising a driving mechanism; the device further comprises a conveying mechanism, a detecting mechanism and a marking mechanism, and the conveying mechanism, the detecting mechanism and the marking mechanism are all installed on the driving mechanism. The conveying mechanism is used for conveying the graphite electrode, the driving mechanism is used for rotating the graphite electrode, the detection mechanism is used for detecting the graphite electrode, and the marking mechanism is used for marking unqualified positions.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite electrode shape detection, in particular to a graphite electrode shape detection sample fixing device. Background Art

[0002] Graphite electrode is an important industrial material, commonly used in high-temperature industrial furnaces, electric arc furnaces and other heat treatment equipment. The appearance of graphite motors needs to be inspected after production. Generally, the graphite electrode is inspected by a graphite electrode appearance detection device disclosed in the invention patent with announcement number CN116858167B. The device mainly consists of a base, a receiving roller and a bidirectional drive assembly. When in use, the end face detection assembly is set to detect the end face of the graphite electrode on the one hand, and cooperate with the detection of the circumferential outer wall of the graphite electrode to complete the full-scale detection of the graphite electrode appearance, further improving the detection accuracy. On the other hand, the movement of the horizontal plate drives the movement of the trigger plate, which automatically turns when the No. 2 roller moves to the end of the graphite electrode, avoiding the separation of the No. 2 roller from the graphite electrode when it moves to the end of the graphite electrode.

[0003] However, during use, it was found that the structure of the downstream detection device was relatively simple. It was inconvenient to mark the defect position after the detection and it was inconvenient to detect the roundness of the graphite motor during the detection process, resulting in poor practicality. Therefore, a graphite electrode shape detection sample fixing device is urgently needed to improve the above problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a graphite electrode shape detection sample fixing device which conveys the graphite electrode to the driving mechanism through a conveying mechanism, so that the driving mechanism drives the graphite electrode to rotate, and at the same time detects the shape of the graphite electrode through a detection mechanism, and then marks the unqualified position through a marking mechanism, and then discharges the detected graphite electrodes through the conveying mechanism, and at the same time conveys another group of undetected graphite electrodes to the driving mechanism, thereby improving the practicality of the equipment.

[0005] The utility model provides a graphite electrode shape detection sample fixing device, comprising a driving mechanism; a conveying mechanism, a detecting mechanism and a marking mechanism, wherein the conveying mechanism, the detecting mechanism and the marking mechanism are all mounted on the driving mechanism;

[0006] The conveying mechanism conveys the graphite electrode, the driving mechanism rotates the graphite electrode, the detecting mechanism detects the graphite electrode, and the marking mechanism marks unqualified positions;

[0007] The graphite electrodes are conveyed to the driving mechanism through the conveying mechanism, and the driving mechanism drives the graphite electrodes to rotate. At the same time, the shape of the graphite electrodes is inspected by the detection mechanism, and the unqualified positions are marked by the marking mechanism. Thereafter, the inspected graphite electrodes are discharged through the conveying mechanism, and another group of uninspected graphite electrodes are conveyed to the driving mechanism, thereby improving the practicality of the equipment.

[0008] Preferably, the driving mechanism includes a base, a frame, two groups of first sliders, a two-way hydraulic cylinder, two groups of fixed frames, two groups of support shafts and two groups of first motors. The frame is installed at the top of the base, and the two groups of first sliders are slidably installed at the top of the base. The two-way hydraulic cylinder is fixedly installed on the base, and the front end and rear end of the two-way hydraulic cylinder are respectively installed on the two groups of first sliders, the two groups of fixed frames are respectively fixedly installed on the two groups of first sliders, the two groups of support shafts are respectively rotatably installed on the two groups of fixed frames, the two groups of first motors are respectively fixedly installed on the two groups of fixed frames, and the output shafts of the two groups of first motors are respectively connected to one end of the two groups of support shafts; the two-way hydraulic cylinder is contracted to make the two groups of first sliders move toward each other, support the graphite electrode on the conveying mechanism, and then turn on the two groups of first motors to drive the two groups of support shafts to rotate respectively, and make the two groups of support shafts drive the graphite electrode to rotate, thereby improving the practicality of the equipment.

[0009] Preferably, the conveying mechanism includes a slide rail, a first electric slider, a first hydraulic cylinder and a support platform, the slide rail is fixedly installed on the base, the first electric slider is slidably installed on the slide rail, and the support platform is installed on the first electric slider through the first hydraulic cylinder; the undetected graphite electrode is placed on the support platform, and then after the detection of the graphite electrodes on the two groups of support shafts is completed, the first hydraulic cylinder is extended to support the graphite electrodes that have been detected on the two groups of support shafts, and then the first electric slider is slid to the left to move the undetected graphite electrode between the two groups of support shafts, and the undetected graphite electrode after detection is transported to the left side of the two groups of support shafts, and then the undetected graphite electrode is supported by the two groups of support shafts, so that the equipment continues to detect the graphite electrode, thereby improving the practicality of the equipment.

[0010] Preferably, the detection mechanism includes a camera, two sets of flatness detection mechanisms and a roundness detection mechanism, and the camera, the two sets of flatness detection mechanisms and the roundness detection mechanism are all installed on the frame; the cracks on the surface of the graphite electrode are detected by the camera, the flatness of the left and right ends of the graphite electrode are detected by the two sets of flatness detection mechanisms, and the roundness of the graphite electrode is detected by the roundness detection mechanism, thereby improving the practicality of the equipment.

[0011] Preferably, the flatness detection mechanism includes a second electric slider, a second hydraulic cylinder, two groups of first pressure sensors, two groups of first springs, a support plate and two groups of first universal rollers. The second electric slider is slidably mounted on the frame, one end of the second hydraulic cylinder is mounted on the second electric slider, the two groups of first pressure sensors are mounted on the other end of the second hydraulic cylinder through a bracket, one end of the two groups of first springs are respectively mounted on the two groups of first pressure sensors, and the two groups of first universal rollers are mounted on the other end of the two groups of first springs through a support plate; the height of the two groups of first universal rollers is adjusted by moving the second electric slider upward or downward, and the two groups of first universal rollers are contacted with the side end of the graphite electrode by extending the second hydraulic cylinder. At the same time, the graphite electrode rotates, and the pressure on the two groups of first universal rollers is detected by the two groups of first pressure sensors to detect the flatness of the side end of the graphite electrode, thereby improving the practicality of the equipment.

[0012] Preferably, the roundness detection mechanism includes a second slider, a lead screw, a second motor, a third hydraulic cylinder, a second pressure sensor, a second spring and a second universal roller, the second slider is slidably mounted on the top of the frame, one end of the lead screw is rotatably mounted on the left end of the frame, the other end of the lead screw passes through the second slider and is rotatably connected to the right end of the frame, and the surface of the lead screw is threadedly connected to the middle of the second slider, the second motor is fixedly mounted on the frame, and the output shaft of the second motor is connected to the right end of the lead screw, the top end of the third hydraulic cylinder is connected to the bottom end of the second slider, the second pressure sensor is mounted on the bottom end of the third hydraulic cylinder, and the second universal roller is mounted on the bottom end of the second pressure sensor through the second spring; the third hydraulic cylinder is extended to make the bottom end of the second universal roller contact with the top end of the graphite electrode, and during the rotation of the graphite electrode, the pressure applied to the second universal roller is detected by the second pressure sensor to detect the roundness of the graphite electrode, and then the second motor is turned on, and the second slider is driven by the lead screw to slide left or right to detect the roundness of other positions of the graphite electrode, thereby improving the practicality of the equipment.

[0013] Preferably, the marking mechanism includes a storage cylinder, a fourth hydraulic cylinder, a piston, a feed valve, a discharge valve, multiple groups of delivery pipes and multiple groups of nozzles. The storage cylinder is installed on the frame, the fourth hydraulic cylinder is fixedly installed on the top of the storage cylinder, the piston is slidably installed inside the storage cylinder, the bottom end of the fourth hydraulic cylinder is connected to the top end of the piston, the feed valve is installed at the bottom of the side end of the storage cylinder, the discharge valve is installed at the bottom end of the storage cylinder, one end of the multiple groups of delivery pipes are connected to the interior of the discharge valve, and the other end of the multiple groups of delivery pipes are respectively installed on the second electric slider and the third hydraulic cylinder; close the discharge valve, open the feed valve, and connect the feed valve with the paint bucket, and contract the fourth hydraulic cylinder to make the piston slide upward to discharge the paint into the interior of the storage cylinder, and then close the feed valve and open the discharge valve. When an unqualified position is detected, the fourth hydraulic cylinder continues to extend to increase the piston to the interior of the storage cylinder, and the paint is sprayed to the unqualified position of the graphite electrode through the nozzle, which is convenient for the staff to observe the unqualified position, thereby improving the practicality of the equipment.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: the graphite electrodes are conveyed to the driving mechanism through the conveying mechanism, so that the driving mechanism drives the graphite electrodes to rotate, and at the same time the shape of the graphite electrodes is inspected by the detection mechanism, and the unqualified positions are marked by the marking mechanism, and then the inspected graphite electrodes are discharged through the conveying mechanism, and at the same time another group of uninspected graphite electrodes are conveyed to the driving mechanism, thereby improving the practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an axonometric structural diagram of the utility model;

[0016] Figure 2 This is a front view structural diagram of the present utility model;

[0017] Figure 3 It is a right side structural schematic diagram of the present utility model;

[0018] Figure 4 This is an enlarged structural diagram of the second hydraulic cylinder and the first universal roller and other mechanisms of the utility model from the right side;

[0019] Figure 5 It is an axonometric cross-sectional enlarged structural diagram of the storage cylinder of the utility model.

[0020] Markings in the accompanying drawings: 1. base; 2. frame; 3. first slider; 4. bidirectional hydraulic cylinder; 5. fixed frame; 6. support shaft; 7. first motor; 8. slide rail; 9. first electric slider; 10. first hydraulic cylinder; 11. support platform; 12. camera; 13. second electric slider; 14. second hydraulic cylinder; 15. first pressure sensor; 16. first spring; 17. support plate; 18. first universal roller; 19. second slider; 20. screw; 21. second motor; 22. third hydraulic cylinder; 23. second pressure sensor; 24. second spring; 25. second universal roller; 26. storage cylinder; 27. fourth hydraulic cylinder; 28. piston; 29. ​​feed valve; 30. discharge valve; 31. delivery pipe; 32. nozzle. DETAILED DESCRIPTION

[0021] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention. Example 1

[0022] A graphite electrode shape detection sample fixing device includes a driving mechanism; a conveying mechanism, a detecting mechanism, and a marking mechanism, wherein the conveying mechanism, the detecting mechanism, and the marking mechanism are all mounted on the driving mechanism;

[0023] The conveying mechanism conveys the graphite electrode, the driving mechanism rotates the graphite electrode, the detecting mechanism detects the graphite electrode, and the marking mechanism marks unqualified positions;

[0024] The driving mechanism includes a base 1, a frame 2, two groups of first sliders 3, a bidirectional hydraulic cylinder 4, two groups of fixing frames 5, two groups of support shafts 6 and two groups of first motors 7. The frame 2 is mounted on the top of the base 1, the two groups of first sliders 3 are slidably mounted on the top of the base 1, the bidirectional hydraulic cylinder 4 is fixedly mounted on the base 1, and the front and rear ends of the bidirectional hydraulic cylinder 4 are respectively mounted on the two groups of first sliders 3, the two groups of fixing frames 5 are respectively fixedly mounted on the two groups of first sliders 3, the two groups of support shafts 6 are respectively rotatably mounted on the two groups of fixing frames 5, the two groups of first motors 7 are respectively fixedly mounted on the two groups of fixing frames 5, and the output shafts of the two groups of first motors 7 are respectively connected to one end of the two groups of support shafts 6;

[0025] The conveying mechanism includes a slide rail 8, a first electric slider 9, a first hydraulic cylinder 10 and a support platform 11. The slide rail 8 is fixedly mounted on the base 1, the first electric slider 9 is slidably mounted on the slide rail 8, and the support platform 11 is mounted on the first electric slider 9 through the first hydraulic cylinder 10;

[0026] The detection mechanism includes a camera 12, two sets of flatness detection mechanisms and a roundness detection mechanism, and the camera 12, two sets of flatness detection mechanisms and a roundness detection mechanism are all installed on the frame 2;

[0027] The flatness detection mechanism includes a second electric slider 13, a second hydraulic cylinder 14, two groups of first pressure sensors 15, two groups of first springs 16, a support plate 17 and two groups of first universal rollers 18. The second electric slider 13 is slidably mounted on the frame 2, one end of the second hydraulic cylinder 14 is mounted on the second electric slider 13, the two groups of first pressure sensors 15 are mounted on the other end of the second hydraulic cylinder 14 through a bracket, one end of the two groups of first springs 16 are respectively mounted on the two groups of first pressure sensors 15, and the two groups of first universal rollers 18 are mounted on the other end of the two groups of first springs 16 through the support plate 17;

[0028] The roundness detection mechanism includes a second slider 19, a screw 20, a second motor 21, a third hydraulic cylinder 22, a second pressure sensor 23, a second spring 24 and a second universal roller 25. The second slider 19 is slidably mounted on the top of the frame 2, one end of the screw 20 is rotatably mounted on the left end of the frame 2, the other end of the screw 20 passes through the second slider 19 and is rotatably connected to the right end of the frame 2, and the surface of the screw 20 is threadedly connected to the middle of the second slider 19. The second motor 21 is fixedly mounted on the frame 2, and the output shaft of the second motor 21 is connected to the right end of the screw 20. The top end of the third hydraulic cylinder 22 is connected to the bottom end of the second slider 19, the second pressure sensor 23 is mounted on the bottom end of the third hydraulic cylinder 22, and the second universal roller 25 is mounted on the bottom end of the second pressure sensor 23 through the second spring 24.

[0029] By contracting the bidirectional hydraulic cylinder 4, the two groups of first sliders 3 move toward each other, supporting the graphite electrode on the conveying mechanism, and then turning on the two groups of first motors 7 to drive the two groups of support shafts 6 to rotate respectively, and make the two groups of support shafts 6 drive the graphite electrode to rotate. At the same time, the second electric slider 13 moves upward or downward to adjust the height of the two groups of first universal rollers 18. The second hydraulic cylinder 14 is extended to make the two groups of first universal rollers 18 contact the side ends of the graphite electrode. At the same time, the graphite electrode rotates, and the pressure exerted on the two groups of first universal rollers 18 is detected by the two groups of first pressure sensors 15 to detect the flatness of the side ends of the graphite electrode. The third hydraulic cylinder 22 is extended to make the bottom end of the second universal roller 25 contact the top end of the graphite electrode. In the process of the rotation of the graphite electrode, the second pressure sensor 23 is used to detect the second universal roller. 25 is subjected to pressure to detect the roundness of the graphite electrode, and then the second motor 21 is turned on, and the second slider 19 is driven to the left or right by the screw 20 to detect the roundness of other positions of the graphite electrode, and the cracks on the surface of the graphite electrode are detected by the camera 12. After the detection, the undetected graphite electrode is placed on the support table 11, and then after the detection of the graphite electrodes on the two groups of support shafts 6 is completed, the first hydraulic cylinder 10 is extended to support the graphite electrodes on the two groups of support shafts 6 that have been detected, and then the first electric slider 9 is slid to the left to move the undetected graphite electrode between the two groups of support shafts 6, and the undetected graphite electrode after the detection is completed is transported to the left side of the two groups of support shafts 6, and then the undetected graphite electrode is supported by the two groups of support shafts 6, so that the equipment continues to detect the graphite electrode, thereby improving the practicality of the equipment. Example 2

[0030] like Figures 1 to 5 As shown, a graphite electrode shape detection sample fixing device includes a driving mechanism; a conveying mechanism, a detecting mechanism and a marking mechanism, and the conveying mechanism, the detecting mechanism and the marking mechanism are all installed on the driving mechanism;

[0031] The conveying mechanism conveys the graphite electrode, the driving mechanism rotates the graphite electrode, the detecting mechanism detects the graphite electrode, and the marking mechanism marks unqualified positions;

[0032] The driving mechanism includes a base 1, a frame 2, two groups of first sliders 3, a bidirectional hydraulic cylinder 4, two groups of fixing frames 5, two groups of support shafts 6 and two groups of first motors 7. The frame 2 is mounted on the top of the base 1, the two groups of first sliders 3 are slidably mounted on the top of the base 1, the bidirectional hydraulic cylinder 4 is fixedly mounted on the base 1, and the front and rear ends of the bidirectional hydraulic cylinder 4 are respectively mounted on the two groups of first sliders 3, the two groups of fixing frames 5 are respectively fixedly mounted on the two groups of first sliders 3, the two groups of support shafts 6 are respectively rotatably mounted on the two groups of fixing frames 5, the two groups of first motors 7 are respectively fixedly mounted on the two groups of fixing frames 5, and the output shafts of the two groups of first motors 7 are respectively connected to one end of the two groups of support shafts 6;

[0033] The conveying mechanism includes a slide rail 8, a first electric slider 9, a first hydraulic cylinder 10 and a support platform 11. The slide rail 8 is fixedly mounted on the base 1, the first electric slider 9 is slidably mounted on the slide rail 8, and the support platform 11 is mounted on the first electric slider 9 through the first hydraulic cylinder 10;

[0034] The detection mechanism includes a camera 12, two sets of flatness detection mechanisms and a roundness detection mechanism, and the camera 12, two sets of flatness detection mechanisms and a roundness detection mechanism are all installed on the frame 2;

[0035] The flatness detection mechanism includes a second electric slider 13, a second hydraulic cylinder 14, two groups of first pressure sensors 15, two groups of first springs 16, a support plate 17 and two groups of first universal rollers 18. The second electric slider 13 is slidably mounted on the frame 2, one end of the second hydraulic cylinder 14 is mounted on the second electric slider 13, the two groups of first pressure sensors 15 are mounted on the other end of the second hydraulic cylinder 14 through a bracket, one end of the two groups of first springs 16 are respectively mounted on the two groups of first pressure sensors 15, and the two groups of first universal rollers 18 are mounted on the other end of the two groups of first springs 16 through the support plate 17;

[0036] The roundness detection mechanism includes a second slider 19, a screw 20, a second motor 21, a third hydraulic cylinder 22, a second pressure sensor 23, a second spring 24 and a second universal roller 25. The second slider 19 is slidably mounted on the top of the frame 2, one end of the screw 20 is rotatably mounted on the left end of the frame 2, the other end of the screw 20 passes through the second slider 19 and is rotatably connected to the right end of the frame 2, and the surface of the screw 20 is threadedly connected to the middle of the second slider 19. The second motor 21 is fixedly mounted on the frame 2, and the output shaft of the second motor 21 is connected to the right end of the screw 20. The top end of the third hydraulic cylinder 22 is connected to the bottom end of the second slider 19, the second pressure sensor 23 is mounted on the bottom end of the third hydraulic cylinder 22, and the second universal roller 25 is mounted on the bottom end of the second pressure sensor 23 through the second spring 24.

[0037] The marking mechanism includes a storage cylinder 26, a fourth hydraulic cylinder 27, a piston 28, a feed valve 29, a discharge valve 30, multiple sets of delivery pipes 31 and multiple sets of nozzles 32. The storage cylinder 26 is installed on the frame 2, the fourth hydraulic cylinder 27 is fixedly installed on the top of the storage cylinder 26, the piston 28 is slidably installed inside the storage cylinder 26, the bottom end of the fourth hydraulic cylinder 27 is connected to the top end of the piston 28, the feed valve 29 is installed at the bottom of the side end of the storage cylinder 26, the discharge valve 30 is installed at the bottom end of the storage cylinder 26, one end of the multiple sets of delivery pipes 31 are connected to the inside of the discharge valve 30, and the other ends of the multiple sets of delivery pipes 31 are respectively installed on the second electric slider 13 and the third hydraulic cylinder 22;

[0038] The two sets of first slide blocks 3 are moved toward each other by contracting the bidirectional hydraulic cylinder 4, and the graphite electrode on the conveying mechanism is supported. Then the two sets of first motors 7 are turned on to respectively drive the two sets of support shafts 6 to rotate, and the two sets of support shafts 6 drive the graphite electrode to rotate. At the same time, the second electric slide block 13 is moved upward or downward to adjust the height of the two sets of first universal rollers 18. The second hydraulic cylinder 14 is extended to make the two sets of first universal rollers 18 contact the side ends of the graphite electrode. At the same time, the graphite electrode rotates, and the two sets of first pressure sensors 15 detect the two sets of first universal rollers. The pressure on the roller 18 is used to detect the flatness of the side end of the graphite electrode. The third hydraulic cylinder 22 is extended to make the bottom end of the second universal roller 25 contact the top end of the graphite electrode. During the rotation of the graphite electrode, the second pressure sensor 23 detects the pressure on the second universal roller 25 to detect the roundness of the graphite electrode. Then, the second motor 21 is turned on and the second slider 19 is driven to the left or right by the lead screw 20 to detect the roundness of other positions of the graphite electrode. The cracks on the surface of the graphite electrode are detected by the camera 12. After the inspection, the uninspected graphite electrode is placed on the support table 11. After the inspection of the graphite electrodes on the two sets of support shafts 6 is completed, the first hydraulic cylinder 10 is extended to support the graphite electrodes on the two sets of support shafts 6. Then, the first electric slider 9 is slid to the left to move the uninspected graphite electrode between the two sets of support shafts 6. The uninspected graphite electrode after the inspection is completed is transported to the left side of the two sets of support shafts 6, and then the uninspected graphite electrode is supported by the two sets of support shafts 6, so that the equipment continues to inspect the graphite electrode until unqualified ones are detected. After reaching the position, the discharge valve 30 is closed, the feed valve 29 is opened, and the feed valve 29 is connected to the paint bucket. The fourth hydraulic cylinder 27 is contracted to make the piston 28 slide upward to discharge the paint into the interior of the storage tube 26. Then the feed valve 29 is closed and the discharge valve 30 is opened. When an unqualified position is detected, the fourth hydraulic cylinder 27 continues to extend to make the piston 28 increase the pressure on the interior of the storage tube 26, and the paint is sprayed to the unqualified position of the graphite electrode through the nozzle 32, which makes it convenient for the staff to observe the unqualified position, thereby improving the practicality of the equipment.

[0039] The bidirectional hydraulic cylinder 4, the first motor 7, the first electric slider 9, the first hydraulic cylinder 10, the camera 12, the second electric slider 13, the second hydraulic cylinder 14, the first pressure sensor 15, the second motor 21, the third hydraulic cylinder 22 and the second pressure sensor 23 of the graphite electrode shape detection sample fixing device of the utility model are purchased on the market, and technicians in this industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A graphite electrode shape detection sample fixing device, comprising a driving mechanism; characterized in that: It also includes a conveying mechanism, a detecting mechanism and a marking mechanism, wherein the conveying mechanism, the detecting mechanism and the marking mechanism are all mounted on the driving mechanism; The conveying mechanism conveys the graphite electrode, the driving mechanism rotates the graphite electrode, the detecting mechanism detects the graphite electrode, and the marking mechanism marks unqualified positions.

2. A graphite electrode shape detection sample fixing device according to claim 1, characterized in that: The driving mechanism comprises a base (1), a frame (2), two groups of first sliders (3), a bidirectional hydraulic cylinder (4), two groups of fixed frames (5), two groups of support shafts (6) and two groups of first motors (7), wherein the frame (2) is mounted on the top of the base (1), the two groups of first sliders (3) are both slidably mounted on the top of the base (1), the bidirectional hydraulic cylinder (4) is fixedly mounted on the base (1), and the front end and the rear end of the bidirectional hydraulic cylinder (4) are respectively mounted on the two groups of first sliders (3), the two groups of fixed frames (5) are respectively fixedly mounted on the two groups of first sliders (3), the two groups of support shafts (6) are respectively rotatably mounted on the two groups of fixed frames (5), the two groups of first motors (7) are respectively fixedly mounted on the two groups of fixed frames (5), and the output shafts of the two groups of first motors (7) are respectively connected to one end of the two groups of support shafts (6).

3. A graphite electrode shape detection sample fixing device as claimed in claim 2, characterized in that: The conveying mechanism comprises a slide rail (8), a first electric slider (9), a first hydraulic cylinder (10) and a support platform (11); the slide rail (8) is fixedly mounted on the base (1); the first electric slider (9) is slidably mounted on the slide rail (8); and the support platform (11) is mounted on the first electric slider (9) via the first hydraulic cylinder (10).

4. A graphite electrode shape detection sample fixing device as claimed in claim 2, characterized in that: The detection mechanism comprises a camera (12), two sets of flatness detection mechanisms and a roundness detection mechanism, and the camera (12), the two sets of flatness detection mechanisms and the roundness detection mechanism are all mounted on the frame (2).

5. A graphite electrode shape detection sample fixing device as claimed in claim 4, characterized in that: The flatness detection mechanism comprises a second electric slider (13), a second hydraulic cylinder (14), two groups of first pressure sensors (15), two groups of first springs (16), a support plate (17) and two groups of first universal rollers (18), wherein the second electric slider (13) is slidably mounted on the frame (2), one end of the second hydraulic cylinder (14) is mounted on the second electric slider (13), the two groups of first pressure sensors (15) are both mounted on the other end of the second hydraulic cylinder (14) through a bracket, one end of the two groups of first springs (16) are respectively mounted on the two groups of first pressure sensors (15), and the two groups of first universal rollers (18) are both mounted on the other end of the two groups of first springs (16) through the support plate (17).

6. A graphite electrode shape detection sample fixing device as claimed in claim 5, characterized in that: The roundness detection mechanism includes a second slider (19), a lead screw (20), a second motor (21), a third hydraulic cylinder (22), a second pressure sensor (23), a second spring (24) and a second universal roller (25), wherein the second slider (19) is slidably mounted on the top of the frame (2), one end of the lead screw (20) is rotatably mounted on the left end of the frame (2), and the other end of the lead screw (20) passes through the second slider (19) and is rotatably connected to the right end of the frame (2), and the lead screw (2 0) is threadedly connected to the middle of the second slider (19), the second motor (21) is fixedly mounted on the frame (2), and the output shaft of the second motor (21) is connected to the right end of the lead screw (20), the top end of the third hydraulic cylinder (22) is connected to the bottom end of the second slider (19), the second pressure sensor (23) is mounted on the bottom end of the third hydraulic cylinder (22), and the second universal roller (25) is mounted on the bottom end of the second pressure sensor (23) through the second spring (24).

7. A graphite electrode shape detection sample fixing device according to claim 6, characterized in that: The marking mechanism comprises a storage cylinder (26), a fourth hydraulic cylinder (27), a piston (28), a feed valve (29), a discharge valve (30), a plurality of delivery pipes (31) and a plurality of nozzles (32), wherein the storage cylinder (26) is mounted on the frame (2), the fourth hydraulic cylinder (27) is fixedly mounted on the top of the storage cylinder (26), the piston (28) is slidably mounted inside the storage cylinder (26), the bottom end of the fourth hydraulic cylinder (27) is connected to the top end of the piston (28), the feed valve (29) is mounted on the bottom of the side end of the storage cylinder (26), the discharge valve (30) is mounted on the bottom end of the storage cylinder (26), one end of the plurality of delivery pipes (31) is communicated with the inside of the discharge valve (30), and the other end of the plurality of delivery pipes (31) is respectively mounted on the second electric slider (13) and the third hydraulic cylinder (22).

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