Graphite electrode contact assembling device capable of automatically controlling screwing-in degree

Abstract

The utility model relates to a graphite electrode contact assembling device capable of automatically controlling screw-in degree, which comprises a liftable machine base and an electric clamping jaw mechanism rotatably arranged at the lower part of the machine base, first telescopic mechanisms are embedded on the left and right sides of the machine base, and the telescopic ends of the first telescopic mechanisms face the side far away from the machine base and are fixedly connected with a vertical plate; laser range finders are detachably arranged at the bottom end of the vertical plate and the center of the bottom of the electric clamping jaw mechanism, the bottoms of the three sets of laser range finders are flush, a calibration table is arranged below the electric clamping jaw mechanism, and third telescopic mechanisms are horizontally and fixedly erected on the front side and the rear side of the top of the calibration table in the front-back direction. The telescopic ends of the two third telescopic mechanisms are oppositely arranged and fixedly connected with magneto-rheological clamping plates. According to the utility model, the screw-in degree can be automatically measured and monitored in real time, and the screw-in and butt-joint quality is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite electrode joints, and in particular relates to a graphite electrode joint assembly device capable of automatically controlling the screw-in degree. Background Art

[0002] At present, when the graphite electrode joint is screwed and connected to the corresponding graphite electrode, a manipulator mechanism with an electric clamp is mostly used. The joint is first clamped by the electric clamp and sent to the end of the graphite electrode and centered. Then, the manipulator mechanism moves and rotates to drive the joint as a whole toward the graphite electrode and screws it into the threaded hole of the graphite electrode. However, in actual applications, it is impossible to accurately measure and monitor the screw-in degree of the joint, and it is easy to screw too tight or too loose, which is not conducive to the subsequent use of the graphite electrode. Workers are also required to manually check the screw-in degree, which increases labor costs and needs to be improved. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide a graphite electrode joint assembly device with automatic control of screw-in degree, which can realize automatic real-time measurement and monitoring of the screw-in degree to solve the above-mentioned problem.

[0004] To achieve the above object, the technical solution adopted by the utility model is as follows: An assembly device for a graphite electrode joint with automatic control of the screwing-in degree, comprising a control center, a liftable machine base, and an electric gripper mechanism rotatably arranged at the lower part of the machine base. First telescopic mechanisms are embedded on both the left and right sides of the machine base. The telescopic ends of the first telescopic mechanisms face away from the machine base and are fixedly connected to vertical plates. Installation blocks are fixedly provided at the bottom ends of the vertical plates and at the bottom center of the electric gripper mechanism. An installation groove is formed at the bottom of the installation block, and a positioning groove and a movable cavity are formed at the upper part. The positioning groove communicates with the installation groove. The movable cavity is arranged on one side of the positioning groove and communicates with the positioning groove. A second telescopic mechanism is fixedly installed in the movable cavity. The telescopic end of the second telescopic mechanism faces the direction where the positioning groove is located and is fixedly connected to a limiting plate. A number of limiting rods distributed in a rectangular array are fixedly provided on the side of the limiting plate away from the second telescopic mechanism. A number of limiting blind holes corresponding to the limiting rods one by one are formed on the groove wall of the side of the positioning groove away from the second telescopic mechanism. A laser rangefinder is placed in the installation groove. The bottoms of the laser rangefinders in the three installation grooves are flush. A positioning block is fixedly provided at the top of the laser rangefinder. The positioning block is inserted into the corresponding positioning groove, and a number of limiting through holes corresponding to the limiting rods one by one are formed thereon. The limiting plate abuts against the positioning block. The limiting rods penetrate through the corresponding limiting through holes and are inserted into the corresponding limiting blind holes. A calibration table is arranged below the electric gripper mechanism. Third telescopic mechanisms are horizontally and fixedly installed along the front-back direction on the front and back sides of the top of the calibration table. The telescopic ends of the two third telescopic mechanisms are arranged oppositely and are both fixedly connected to magnetorheological clamping plates. The first telescopic mechanism, the second telescopic mechanism, the laser rangefinder, and the third telescopic mechanism are all electrically connected to the control center.

[0005] Preferably, the laser rangefinder is adapted to the corresponding installation groove.

[0006] Preferably, the positioning block is adapted to the corresponding positioning groove.

[0007] Preferably, the limiting rod is adapted to the corresponding limiting through hole and limiting blind hole.

[0008] Preferably, the magnetorheological clamping plate comprises a substrate fixedly connected to the telescopic end of the corresponding third telescopic mechanism. An electromagnetic coil is embedded on the peripheral side of the substrate. A pressure sensor is embedded at one end of the substrate away from the corresponding third telescopic mechanism. The peripheral side of the substrate and the side thereof away from the corresponding third telescopic mechanism are wrapped with a magnetorheological elastomer. The tail end of the pressure sensor extends into the corresponding magnetorheological elastomer. The electromagnetic coil and the pressure sensor are both electrically connected to the control center.

[0009] Preferably, a fourth telescopic mechanism is provided at each of the four corners of the upper portion of the base, the fourth telescopic mechanism is electrically connected to the control center, the telescopic end of the fourth telescopic mechanism faces downward and is fixedly connected to the base, and the top is fixedly connected to the same top seat.

[0010] Preferably, a driving mechanism is fixed on the upper part of the base, the driving mechanism is electrically connected to the control center, and the electric clamping mechanism is transmission-connected to the driving mechanism.

[0011] The beneficial effect of the utility model is that when in use, the device is connected to existing overhead cranes and other lifting equipment to facilitate the device to move back and forth between the loading station, calibration station and assembly station. During the assembly operation, the device is first moved to the loading station with a graphite electrode joint, and then the electric clamping mechanism is operated to grab a graphite electrode joint and transport it to the calibration station with a calibration table. Next, the graphite electrode joint is placed on the calibration table, and the electric clamping mechanism is removed from the graphite electrode joint. After that, the two sets of third telescopic mechanisms on the calibration table are operated to drive the two sets of magnetorheological clamps to move relative to each other until the two magnetorheological clamps are pressed against the front and rear sides of the graphite electrode joint. Through the mutual cooperation of the two sets of magnetorheological clamps, the graphite electrode joint can be firmly clamped and fixed on the calibration table. Then, operate the electric clamp mechanism again to clamp the clamp on the graphite electrode joint to achieve preliminary positioning, and then operate the two first telescopic mechanisms to adjust the positions of the corresponding laser rangefinders so that the laser rangefinders on the left and right sides are aligned with the top surface of the calibration table. The setting of the first telescopic mechanism can realize flexible adjustment of the horizontal positions of the laser rangefinders on the left and right sides to better meet actual needs, making the overall use of the device more flexible, convenient and practical. Next, operate the laser rangefinder located at the center of the electric clamp mechanism to measure the distance L1 between the laser rangefinder and the top surface of the graphite electrode joint. Operate at least one group of the laser rangefinders on the left and right sides to measure the distance L2 between the corresponding laser rangefinder and the top surface of the calibration table, and feed back the distance information to the control center. Subtract L1 from L2 to get the total length of the graphite electrode joint.

[0012] After measuring the total length of the graphite electrode joint, run the third telescopic mechanism again to drive the magnetorheological clamping plate to retract and reset, thus releasing the clamping limit on the graphite electrode joint. Moreover, the magnetorheological clamping plate can return to its original state without affecting the subsequent clamping and fixing of other graphite electrode joints, being able to flexibly adapt to the clamping limit requirements of graphite electrode joints of different specifications, with a wide application range and being more flexible and convenient to use. Then, hoist the graphite electrode joint to the assembly station with the graphite electrode, align the graphite electrode joint with the threaded hole reserved at the end of the graphite electrode, and then, through the lift movement of the machine base and the rotational movement of the electric claw mechanism, drive the clamped graphite electrode joint to be screwed into the corresponding threaded hole. During this process, the two first telescopic mechanisms can be run again to align the laser rangefinders on the left and right sides with the end face of the graphite electrode, and then run the laser rangefinders on the left and right sides to measure the distance L3 between them and the end face of the graphite electrode, and feed the distance information back to the control center. Since the laser rangefinders move synchronously with the whole device towards the graphite electrode, L1 remains unchanged and L3 gradually decreases. The length of the graphite electrode joint exposed outside the graphite electrode is L3 minus L1. Subtracting this length from half of the length of the graphite electrode joint is the length of the other half of the graphite electrode joint that is screwed into the graphite electrode after the first half has been screwed in. This length is the screwing-in degree of the graphite electrode joint, that is, screwing-in degree = (L2 - L1) / 2 - (L3 - L1). As L3 decreases, the screwing-in degree increases accordingly. When the screwing-in degree reaches the value set on the control center (the required range of the screwing-in degree is 0.3 - 1.5 mm), the control center can automatically control the device to stop moving and rotating towards the graphite electrode, stop screwing in, and complete the assembly. In this way, the automatic measurement and monitoring of the screwing-in degree during the assembly of the graphite electrode joint can be realized, enabling more accurate screwing-in place, avoiding problems such as being too tight or too loose, without the need for manual secondary measurement. And by setting two groups of laser rangefinders on the left and right sides, under normal circumstances, there is no deviation in the L3 measured by the two groups of laser rangefinders respectively. If the two L3 values are unequal, the control center will urgently control the device to stop operation and alarm, reminding the staff to find out the reason and deal with it. With their mutual cooperation, the assembly quality can be more effectively guaranteed, which is more beneficial to the subsequent use of the graphite electrode;

[0013] In addition, each laser rangefinder can be conveniently disassembled and assembled, which facilitates the maintenance or replacement of the laser rangefinder according to actual needs. The specific disassembly and assembly operations are as follows: When disassembling, in the shutdown state, first operate the second telescopic mechanism to drive the limit plate to retract until the limit rod retracts into the movable cavity, then the plug-in fixation of the positioning block can be released, and then pull out the positioning block and the laser rangefinder to disassemble the original laser rangefinder. When installing, first insert the laser rangefinder and the positioning block in place in the corresponding installation groove and positioning groove, and then operate the second telescopic mechanism to make its telescopic end extend, driving the limit plate to move until the limit plate presses against the positioning block. At this time, the limit rod can pass through the corresponding limit through-hole and be inserted in place in the corresponding limit blind hole to fix the positioning block by plugging, thus completing the installation and fixation of the laser rangefinder, and the installation is firm without affecting subsequent use. In this way, the overall use of the device can be made more flexible, convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view structural schematic diagram of the present utility model;

[0015] Figure 2 is the front view structural schematic diagram of the mounting block of the present utility model;

[0016] Figure 3 is the front view structural schematic diagram of the laser rangefinder of the present utility model;

[0017] Figure 4 is the front view structural schematic diagram when the laser rangefinder of the present utility model is connected to the mounting block;

[0018] Figure 5 is the right view structural schematic diagram of the calibration table of the present utility model;

[0019] Figure 6 is the right view structural schematic diagram of the magnetorheological clamping plate of the present utility model;

[0020] Figure 7 is the front view structural schematic diagram when the present utility model is calibrated;

[0021] Figure 8 is the front view structural schematic diagram when the present utility model is screwed in.

[0022] Reference numerals in the figure: 1 is the machine base, 2 is the electric gripper mechanism, 3 is the first telescopic mechanism, 4 is the vertical plate, 5 is the mounting block, 6 is the mounting groove, 7 is the positioning groove, 8 is the movable cavity, 9 is the second telescopic mechanism, 10 is the limiting plate, 11 is the limiting rod, 12 is the limiting blind hole, 13 is the laser rangefinder, 14 is the positioning block, 15 is the limiting through hole, 16 is the calibration table, 17 is the third telescopic mechanism, 18 is the magnetorheological clamping plate, 19 is the substrate, 20 is the electromagnetic coil, 21 is the pressure sensor, 22 is the magnetorheological elastomer, 23 is the fourth telescopic mechanism, 24 is the top seat, 25 is the driving mechanism, 26 is the graphite electrode connector, 27 is the graphite electrode. Detailed implementation mode

[0023] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes:

[0024] As Figures 1 to 8 shown, an assembly device for a graphite electrode connector with automatic control of the screwing-in degree includes a control center, a liftable machine base 1, and an electric gripper mechanism 2 rotatably arranged at the lower part of the machine base 1. The first telescopic mechanisms 3 are embedded on both the left and right sides of the machine base 1. The telescopic ends of the first telescopic mechanisms 3 face away from the machine base 1 and are fixedly connected to the vertical plates 4. The bottom ends of the vertical plates 4 and the bottom center of the electric gripper mechanism 2 are both fixedly provided with mounting blocks 5. The bottom of the mounting block 5 is provided with a mounting groove 6, and the upper part is provided with a positioning groove 7 and a movable cavity 8. The positioning groove 7 communicates with the mounting groove 6. The movable cavity 8 is arranged on one side of the positioning groove 7 and communicates with the positioning groove 7. A second telescopic mechanism 9 is fixedly installed in the movable cavity 8. The telescopic end of the second telescopic mechanism 9 faces the direction where the positioning groove 7 is located and is fixedly connected to the limiting plate 10. A plurality of limiting rods 11 distributed in a rectangular array are fixedly provided on the side of the limiting plate 10 away from the second telescopic mechanism 9. A plurality of limiting blind holes 12 corresponding to the limiting rods 11 one by one are opened on the groove wall of the positioning groove 7 on the side away from the second telescopic mechanism 9. A laser rangefinder 13 is placed in the mounting groove 6. The bottoms of the laser rangefinders 13 in the three mounting grooves 6 are flush. A positioning block 14 is fixedly provided on the top of the laser rangefinder 13. The positioning block 14 is inserted into the corresponding positioning groove 7 and is provided with a plurality of limiting through holes 15 corresponding to the limiting rods 11 one by one. The limiting plate 10 abuts against the positioning block 14. The limiting rods 11 penetrate through the corresponding limiting through holes 15 and are inserted into the corresponding limiting blind holes 12. A calibration table 16 is arranged below the electric gripper mechanism 2. The third telescopic mechanisms 17 are horizontally and fixedly installed along the front and rear directions on the front and rear sides of the top of the calibration table 16. The telescopic ends of the two third telescopic mechanisms 17 are arranged oppositely and are both fixedly connected to the magnetorheological clamping plates 18. The first telescopic mechanism 3, the second telescopic mechanism 9, the laser rangefinder 13, and the third telescopic mechanism 17 are all electrically connected to the control center;

[0025] In use, the device is connected to an existing crane or other lifting equipment to facilitate driving the device to move back and forth between the feeding station, the calibration station, and the assembly station. During the assembly operation, first move the device to the feeding station with the graphite electrode joint 26, then operate the electric gripper mechanism 2 to grab a graphite electrode joint 26 and transport it to the calibration station with the calibration table 16. Next, place the graphite electrode joint 26 on the calibration table 16 and make the electric gripper mechanism 2 leave the graphite electrode joint 26. After that, operate the two groups of third telescopic mechanisms 17 on the calibration table 16 to drive the two groups of magnetorheological clamping plates 18 to move relative to each other until the two magnetorheological clamping plates 18 press against the front and back sides of the graphite electrode joint 26. Through the mutual cooperation of the two groups of magnetorheological clamping plates 18, the graphite electrode joint 26 can be firmly clamped and fixed on the calibration table 16. Then, operate the electric gripper mechanism 2 again to make its jaws clamp on the graphite electrode joint 26 to achieve preliminary positioning. Then, operate the two first telescopic mechanisms 3 to adjust the positions of the corresponding laser rangefinders 13 so that the laser rangefinders 13 on the left and right sides are aligned with the top surface of the calibration table 16. The setting of the first telescopic mechanism 3 can realize the flexible adjustment of the horizontal positions of the laser rangefinders 13 on the left and right sides to better meet the actual requirements, making the overall use of the device more flexible, convenient, and practical. Next, operate the laser rangefinder 13 located at the center of the electric gripper mechanism 2 to measure the distance L1 between this laser rangefinder 13 and the top surface of the graphite electrode joint 26. Operate at least one of the laser rangefinders 13 on the left and right sides to measure the distance L2 between the corresponding laser rangefinder 13 and the top surface of the calibration table 16, and feedback the distance information to the control center. Subtract L1 from L2 to obtain the total length of the graphite electrode joint 26;

[0026] After measuring the total length of the graphite electrode joint 26, the third telescopic mechanism 17 is operated again to drive the magnetorheological clamping plate 18 to retract and reset, so that the clamping limit of the graphite electrode joint 26 can be released, and the magnetorheological clamping plate 18 can return to its original state, without affecting the subsequent clamping and fixing of other graphite electrode joints 26. It can flexibly adapt to the clamping limit requirements of graphite electrode joints 26 with different specifications, has a wide application range, and is more flexible and convenient to use. Then, the graphite electrode joint 26 is hoisted to the assembly station with the graphite electrode 27, and the graphite electrode joint 26 is aligned with the threaded hole reserved at the end of the graphite electrode 27. Then, through the lifting movement of the machine base 1 and the rotational movement of the electric claw mechanism 2, the clamped graphite electrode joint 26 can be driven to be screwed into the corresponding threaded hole. During the process, the two first telescopic mechanisms 3 can be operated again to align the laser rangefinders 13 on the left and right sides with the end face of the graphite electrode 27, and the laser rangefinders 13 on the left and right sides are operated to measure the distance L3 between them and the end face of the graphite electrode 27, and the distance information is fed back to the control center. Since the laser rangefinders 13 move synchronously with the whole device towards the graphite electrode, L1 remains unchanged and L3 gradually decreases. The length of the graphite electrode joint 26 exposed outside the graphite electrode 27 is L3 minus L1. Subtracting this length from half of the length of the graphite electrode joint 26 is the length of the part of the other half of the graphite electrode joint 26 that is screwed into the graphite electrode 27 after half of it is screwed into the graphite electrode 27. This length is the screwing-in degree of the graphite electrode joint 26, that is, the screwing-in degree = (L2 - L1) / 2 - (L3 - L1). As L3 decreases, the screwing-in degree increases accordingly. When the screwing-in degree reaches the screwing-in degree set on the control center (the required range of the screwing-in degree is 0.3 - 1.5 mm), the control center can automatically control the device to stop moving and rotating towards the graphite electrode, stop screwing in, and complete the assembly. In this way, the automatic measurement and monitoring of the screwing-in degree during the assembly of the graphite electrode joint 26 can be realized, and it can be screwed in more accurately in place, avoiding problems such as over-tightening or over-loosening. There is no need for manual secondary measurement, and two groups of laser rangefinders 13 are set on the left and right sides. Under normal circumstances, there is no deviation in the L3 measured by the two groups of laser rangefinders 13 respectively. If the two L3 values are not equal, the control center will urgently control the device to stop operating and alarm, reminding the staff to find out the reason and deal with it. With mutual cooperation, the assembly quality can be effectively guaranteed, which is more beneficial to the subsequent use of the graphite electrode;

[0027] In addition, each laser rangefinder 13 can be conveniently disassembled and assembled, facilitating the maintenance or replacement of the laser rangefinder 13 according to actual needs. The specific disassembly and assembly operations are as follows: During disassembly, in the shutdown state, first operate the second telescopic mechanism 9 to drive the limit plate 10 to retract until the limit rod 11 retracts into the movable cavity 8, thus releasing the plug-in fixation of the positioning block 14. Then, pull out the positioning block 14 and the laser rangefinder 13 downward to disassemble the original laser rangefinder 13. During installation, first insert the laser rangefinder 13 and the positioning block 14 into place in the corresponding installation groove 6 and positioning groove 7, and then operate the second telescopic mechanism 9 to extend its telescopic end, driving the limit plate 10 to move until the limit plate 10 presses against the positioning block 14. At this time, the limit rod 11 can pass through the corresponding limit through-hole 15 and be inserted into place in the corresponding limit blind-hole 12 to plug-fix the positioning block 14, completing the installation and fixation of the laser rangefinder 13. Moreover, the installation is stable and does not affect subsequent use. In this way, the overall use of the device can be made more flexible, convenient, and practical. The electric gripper mechanism 2, the laser rangefinder 13, and the control center can all adopt existing technologies, and their specific models can be selected according to actual situations and are not specifically limited here.

[0028] In this embodiment, the laser rangefinder 13 is adapted to the corresponding installation groove 6 to ensure the smooth installation of the laser rangefinder 13 in place.

[0029] In this embodiment, the positioning block 14 is adapted to the corresponding positioning groove 7 to ensure the smooth installation of the positioning block 14 in place.

[0030] In this embodiment, the limit rod 11 is adapted to the corresponding limit through-hole 15 and limit blind-hole 12 to ensure the smooth plug-in of the limit rod 11 in place.

[0031] In this embodiment, the magnetorheological splint 18 includes a substrate 19 fixedly connected to the telescopic end of the corresponding third telescopic mechanism 17. An electromagnetic coil 20 is embedded on the peripheral side of the substrate 19, and a pressure sensor 21 is embedded on one end of the substrate 20 away from the corresponding third telescopic mechanism 17. The peripheral side of the substrate 19 and the side thereof away from the corresponding third telescopic mechanism 17 are wrapped with a magnetorheological elastomer 22. The tail end of the pressure sensor 21 extends into the corresponding magnetorheological elastomer 22. Both the electromagnetic coil 20 and the pressure sensor 21 are electrically connected to the control center. When clamping the graphite electrode joint 26, in the initial state, the electromagnetic coil 20 is not powered on, and the magnetorheological elastomer 22 is in a pre-yield state with a small shear yield stress and is prone to deformation. When the two magnetorheological splints 18 approach each other and contact the graphite electrode joint 26, the impact generated by the contact can be reduced to ensure stability. Then, when the two magnetorheological splints 18 continue to approach each other, the magnetorheological elastomer 22 of the corresponding magnetorheological splint 18 can continue to press against the graphite electrode joint 26. At this time, the magnetorheological elastomer 22 is deformed under pressure, and thus can perfectly nest and wrap around the side of the corresponding graphite electrode joint 26. At the same time, the pressure sensor 21 is pressed and gives an electrical signal to the control center, so that the control center can judge through the pressure sensor 21 that the magnetorheological elastomer 22 has been deformed by pressing against the graphite electrode joint 26, and thus automatically controls the circuit of the electromagnetic coil 20 to be turned on. The electromagnetic coil 20 is powered on to generate a magnetic field, and the magnetorheological elastomer 22 can generate a large shear yield stress in the magnetic field environment, so that its shape is solidified and no longer changes. Furthermore, it can perfectly adapt to the surface of the graphite electrode joint 26, clamp and fix the graphite electrode joint 26 more stably and firmly, without affecting subsequent calibration and measurement operations. After measuring the total length of the graphite electrode joint 26, the third telescopic mechanism 17 is operated to make its telescopic end contract, so that the two magnetorheological splints 18 can leave the graphite electrode joint 26 and move away from each other. During this process, the pressure sensor 21 loses pressure and gives an electrical signal to the control center again, so that the control center can automatically control the circuit of the electromagnetic coil 20 to be disconnected. Furthermore, the magnetorheological elastomer 22 returns to its original state after losing the magnetic field effect, thus not affecting its subsequent clamping use, enabling it to flexibly adapt to the clamping and limiting requirements of graphite electrode joints 26 of different specifications, with a wide application range and more flexible and convenient use. Both the electromagnetic coil 20 and the pressure sensor 21 can adopt existing technologies. The magnetorheological elastomer 22 is an existing technology, which involves incorporating micron-scale ferromagnetic particles into a polymer. It can deform and recover in a normal environment and can be solidified in a magnetic field environment. Therefore, the particles in the matrix have a chain or columnar structure. The elastic modulus of this material can change with the applied magnetic field strength. Therefore, it is expected to be widely used in variable stiffness devices and other aspects. Compared with ordinary magnetorheological fluids, the magnetorheological elastomer 22 not only has high-tech characteristics such as controllability, reversibility, and rapid response, but also has unique advantages such as good stability.

[0032] In this embodiment, the fourth telescopic mechanism 23 is provided at the four corners of the upper part of the machine base 1. The fourth telescopic mechanism 23 is electrically connected to the control center. The telescopic end of the fourth telescopic mechanism 23 faces downward and is fixedly connected to the machine base 1. The top is fixedly connected to the same top seat 24, so that in actual use, the device as a whole can be connected to existing overhead cranes and other equipment through the top seat 24 to facilitate the movement of the device as a whole. The telescopic end of the fourth telescopic mechanism can be extended and retracted to achieve the overall lifting and lowering movement of the machine base 1 and the electric clamping mechanism 2, so as to facilitate the screwing and screwing assembly between the graphite electrode joint 26 and the graphite electrode 27. The first telescopic mechanism 3, the second telescopic mechanism 9, the third telescopic mechanism 17 and the fourth telescopic mechanism 23 can all use existing conventional hydraulic cylinders, cylinders or electric push rods and other components with telescopic functions.

[0033] In this embodiment, a driving mechanism 25 is fixedly mounted on the upper part of the base 1, and the driving mechanism 25 is electrically connected to the control center. The electric clamping mechanism 2 is transmission-connected to the driving mechanism 25, so that in actual use, the driving mechanism 25 can drive the entire electric clamping mechanism 2 to rotate, so as to cooperate and realize the screwing and screwing assembly between the graphite electrode joint 26 and the graphite electrode 27. The driving mechanism 25 can use existing conventional servo motors and other driving devices.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembly device for graphite electrode joints with automatic control of screwing-in degree, comprising a control center, a liftable machine base, and an electric gripper mechanism rotatably arranged at the lower part of the machine base, characterized in that, The left and right sides of the machine base are both embedded with a first telescopic mechanism, the telescopic end of the first telescopic mechanism faces the side away from the machine base and is fixedly connected with a vertical plate, the bottom end of the vertical plate and the bottom center of the electric clamping claw mechanism are fixedly provided with a mounting block, the bottom of the mounting block is provided with a mounting groove, the upper part is provided with a positioning groove and a movable cavity, the positioning groove is communicated with the mounting groove, the movable cavity is arranged on one side of the positioning groove and is communicated with the positioning groove, a second telescopic mechanism is fixedly mounted in the movable cavity, the telescopic end of the second telescopic mechanism faces the direction of the positioning groove and is fixedly connected with a limiting plate, a side of the limiting plate away from the second telescopic mechanism is fixedly provided with a plurality of limiting rods distributed in a rectangular array, and a groove wall of the positioning groove on the side away from the second telescopic mechanism is provided with a plurality of limiting rods that are connected to the limiting rods One-to-one corresponding limiting blind holes, a laser rangefinder is placed in the installation slot, the bottoms of the laser rangefinders in the three groups of installation slots are flush, a positioning block is fixedly provided on the top of the laser rangefinder, the positioning block is inserted in the corresponding positioning slot and is provided with a number of limiting through holes corresponding to the limiting rods one-to-one, the limiting plate abuts against the positioning block, the limiting rod passes through the corresponding limiting through holes and is inserted in the corresponding limiting blind holes, a calibration platform is provided below the electric clamping jaw mechanism, and the third telescopic mechanism is horizontally fixedly mounted on the front and rear sides of the top of the calibration platform along the front and rear directions, the telescopic ends of the two third telescopic mechanisms are relatively arranged and fixedly connected with magnetorheological clamping plates, and the first telescopic mechanism, the second telescopic mechanism, the laser rangefinder and the third telescopic mechanism are all electrically connected to the control center.

2. The graphite electrode joint assembly device for automatically controlling the screwing-in degree according to claim 1, wherein, The laser rangefinder is adapted to the corresponding mounting groove.

3. The graphite electrode joint assembly device for automatically controlling the screwing-in degree according to claim 1, characterized in that, The positioning block is matched with the corresponding positioning groove.

4. The graphite electrode joint assembly device for automatically controlling the screwing-in degree according to claim 1, characterized in that, The limiting rod is matched with the corresponding limiting through hole and limiting blind hole.

5. The graphite electrode joint assembly device for automatically controlling the screwing-in degree according to claim 1, wherein The magnetorheological clamp includes a substrate fixedly connected to the telescopic end of the corresponding third telescopic mechanism, an electromagnetic coil is embedded on the peripheral side of the substrate, a pressure sensor is embedded on the end of the substrate away from the corresponding third telescopic mechanism, the peripheral side of the substrate and the side away from the corresponding third telescopic mechanism are wrapped with a magnetorheological elastomer, the tail end of the pressure sensor extends into the corresponding magnetorheological elastomer, and the electromagnetic coil and the pressure sensor are both electrically connected to the control center.

6. The graphite electrode joint assembly device for automatically controlling the screwing-in degree according to claim 1, wherein, A fourth telescopic mechanism is provided at each of the four corners of the upper portion of the base. The fourth telescopic mechanism is electrically connected to the control center. The telescopic end of the fourth telescopic mechanism faces downward and is fixedly connected to the base, and the top is fixedly connected to the same top seat.

7. The graphite electrode joint assembly device for automatically controlling the screwing-in degree according to claim 1, characterized in that A driving mechanism is fixedly mounted on the upper portion of the machine base. The driving mechanism is electrically connected to a control center, and the electric clamping mechanism is transmission-connected to the driving mechanism.

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