Graphite electrode center hole machining equipment

Abstract

The invention relates to the technical field of graphite electrode machining, and discloses graphite electrode center hole machining equipment which comprises a clamping assembly for positioning a graphite electrode and further comprises a trepanning assembly for synchronously machining center holes in the two ends of the graphite electrode, and the trepanning assembly comprises moving seats arranged on ground rails at the two ends in a sliding mode respectively. A mounting frame for sleeving the graphite electrode is slidably arranged on the ground rail, the connecting cylinder is slidably connected to the inner wall of the mounting frame, a sealing assembly is arranged between the inner wall of the mounting frame and the outer wall of the graphite electrode, a through hole is formed in the mounting frame, and a dust collection pipe is connected to the dust collection through hole in the upper side; the air inlet through hole in the lower side is provided with a control assembly capable of automatically adjusting the opening degree along with the pressure change of the dust suction pipe. According to the graphite electrode center hole machining device, a large amount of dust generated in the graphite electrode center hole machining process can be comprehensively and effectively adsorbed, and therefore the cleanliness of the working environment and the occupational health requirements of workers are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of graphite electrode processing technology, specifically to a graphite electrode center hole processing equipment. Background Technology

[0002] Graphite electrodes are mainly made from petroleum coke and needle coke as raw materials, with coal tar pitch as a binder. They are manufactured through calcination, batching, mixing, molding, roasting, graphitization, and machining. They are conductors that release electrical energy in the form of an electric arc to heat and melt the furnace charge in an electric arc furnace.

[0003] During the machining process of graphite electrodes, center holes need to be machined on both ends, and then internal threads are drilled in these center holes to ensure the mating of two graphite electrodes. Because the graphite electrode material itself is composed of granular graphite and is relatively brittle and porous, a large amount of dust will inevitably be generated during the machining of the center holes. Since graphite materials are easily contaminated by cutting fluid, existing methods typically use dust extraction pipes to absorb and treat the dust during machining.

[0004] The above-mentioned dust adsorption process using a vacuum tube is an open process. Since the adsorption area of ​​the vacuum tube is limited, it cannot adsorb a large amount of dust, which can easily cause the dust to drift into the surrounding environment, affecting the cleanliness of the working environment and the occupational health of workers. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned difficulties and provide a graphite electrode center hole processing device.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: a graphite electrode center hole processing device, including a clamping assembly for positioning the graphite electrode, and an opening assembly for synchronously processing the center holes at both ends of the graphite electrode. The opening assembly includes movable seats that are slidably disposed on ground rails at both ends, and connecting cylinders are respectively provided on the opposite ends of the two movable seats. An installation frame for fitting the graphite electrode is slidably disposed on the ground rails, and the connecting cylinders are slidably connected to the inner wall of the installation frame. A sealing assembly is provided between the inner wall of the installation frame and the outer wall of the graphite electrode. A positioning component is provided between the mounting frame and the connecting cylinder to fix the two together. When the mounting frame moves to fit the graphite electrode, it triggers the sealing component to seal the mounting frame and the graphite electrode. At the same time, it also triggers the positioning component to release the positioning between the mounting frame and the connecting cylinder. Dust suction holes and air intake holes are respectively provided on the top and bottom surfaces of the mounting frame. A dust suction pipe is connected to the dust suction hole, and a control component is provided on the air intake hole to automatically adjust the opening and closing size according to the pressure change of the dust suction pipe.

[0007] As an improvement, the sealing assembly includes a connecting ring disposed at the end of the mounting frame. The connecting ring has an annular seat that extends into the mounting frame and has an inclined structure, and a sealing ring is disposed on the annular seat. The sealing ring and the annular seat have multiple notches along the circumferential direction. A mating seat is slidably disposed in the mounting frame to push the inclined surface of the annular seat. The mounting frame is provided with a pushing assembly for controlling the sliding adjustment of the mating seat. When the mounting frame moves to the point of fitting the graphite electrode, the pushing assembly is triggered and drives the mating seat to push the annular seat.

[0008] As an improvement, the pushing assembly includes a pushing cylinder slidably disposed on the outer wall of the mounting frame, a guide rod fixedly disposed on the pushing cylinder and slidably engaged with the mounting frame, a first swing arm hinged to the guide rod, a second swing arm hinged to the mating seat, a swing rod hinged together between the first and second swing arms, a bearing frame fixedly disposed on the inner wall of the mounting frame and hinged to the middle of the swing rod, a limiting seat for blocking the pushing cylinder on the clamping assembly, and a fixing assembly for positioning the pushing cylinder and the mounting frame.

[0009] As an improvement, the positioning component includes a fixed seat set on the mounting frame, a positioning pin with a spring-loaded function slidably provided in the fixed seat, a pin hole for the positioning pin to extend into on the connecting cylinder, a frame provided on the outer end face of the positioning pin and a wedge block provided on the frame, a support frame provided on the clamping component and an adapter block that mates with the wedge block provided on the support frame.

[0010] As an improvement, the fixing component includes a slide rod fixedly mounted on the push cylinder, a slide hole for the slide rod to extend into on the mounting frame, a conical hole inside the slide rod, a conical block extending into the conical hole fixedly mounted on the bottom wall of the slide hole, and a notch II on the conical block along the circumferential direction, and a return spring for engaging the conical block fixedly mounted between the slide rod and the bottom wall of the through hole.

[0011] As an improvement, a positioning element is provided between the push cylinder and the limiting seat to fix the two together. The positioning element includes magnets that cooperate with each other on the push cylinder and the limiting seat. Conical positioning rods are provided at both ends of the limiting seat, and a conical hole is provided on the push cylinder for the conical positioning rods to extend into.

[0012] As an improvement, the control component includes an intake pipe extending into the lower intake port, an annular boss on the inner wall of the intake pipe and a swing cover hinged to the annular boss, and guide plates are respectively provided at both ends of the intake pipe on the inner wall of the mounting frame.

[0013] The advantages of this invention compared to the prior art are as follows: 1. With the help of the opening and sealing components, a large amount of dust generated during the opening process can be controlled within the mounting frame through sealing, preventing the dust from drifting to the outside. With the cooperation of the suction pipe and the control component, the opening and closing size of the control component on the air inlet can be adapted to the change of suction pipe pressure, thereby balancing the airflow within the mounting frame. This allows for continuous adsorption of dust within the mounting frame, thus improving the comprehensiveness of dust adsorption. 2. Under the action of the sealing component, when the mounting frame slides to the point of fitting the graphite electrode, the sealing component is triggered to effectively seal the inner wall of the mounting frame and the outer wall of the graphite electrode, thereby improving the convenience of the sealing operation of this device. 3. Under the action of the positioning component, the sliding control of the moving seat and the mounting frame can be concentrated on the same power component. When the mounting frame is sleeved and sealed to the graphite electrode, the positioning component is released, and the sliding of the moving seat is controlled separately to process the center hole at the end of the graphite electrode. During the entire processing, a large amount of dust generated can be controlled inside the mounting frame through sealing, thereby avoiding the phenomenon of dust drifting outward. 4. While the sealing component is sealing, it can drive the positioning component to automatically release the positioning operation, thereby improving the convenience of the positioning operation of this device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0015] Figure 2 This is a schematic diagram of the internal structure of the present invention.

[0016] Figure 3 This is a partial internal structure diagram of the present invention.

[0017] Figure 4 This is a schematic diagram of the structure inside the mounting cylinder in this invention.

[0018] Figure 5 This is the present invention. Figure 4 Enlarged view of point A in the middle.

[0019] Figure 6 This is a schematic diagram of the sealing component in this invention.

[0020] Figure 7 This is a schematic diagram of the structure of the fixing component in this invention.

[0021] Figure 8 This is the present invention. Figure 7 Enlarged view of point B in the middle.

[0022] Figure 9 This is the present invention. Figure 2Enlarged view of point C in the middle.

[0023] Figure 10 This is a schematic diagram of the control component in this invention.

[0024] As shown in the figure: 1. Clamping assembly; 111. Limiting seat; 112. Bearing seat; 113. Support seat; 114. Crossbeam; 115. Electric cylinder; 116. Clamping seat; 2. Opening assembly; 211. Moving seat; 212. Connecting cylinder; 213. Mounting frame; 214. Annular piston body; 215. Motor; 216. Center drill; 3. Sealing assembly; 311. Connecting ring; 312. Annular seat; 313. Sealing ring; 314. Notch one; 315. Mating seat; 4. Positioning assembly; 411. Fixed seat; 412. Positioning pin; 413. Frame; 414. Wedge block; 415. Support frame; 416. Adaptor block; 5. Suction pipe; 6. Control assembly; 611. Air inlet pipe; 612. Annular boss; 613. Swing cover; 614. Guide plate; 7. Push assembly; 711. Push cylinder; 712. Guide rod; 713. Swing arm one; 714. Swing arm two; 715. Swing rod; 716. Bearing frame; 8. Fixing assembly; 811. Slide rod; 812. Conical hole; 813. Conical block; 814. Notch two; 815. Return spring; 9. Graphite electrode. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 9 As shown, a graphite electrode center hole processing device includes a clamping assembly 1 for positioning a graphite electrode 9. The clamping assembly 1 includes a bearing seat 112 fixedly mounted on the ground at both ends of the graphite electrode 9. Support seats 113 are fixedly mounted on the ground at both ends of the graphite electrode 9. A crossbeam 114 is slidably mounted on both support seats 113. The sliding of the crossbeam 114 can be controlled by the cooperation of the adjusting screw and the threaded sleeve in the prior art or by the extension and retraction of the electric cylinder. The sliding arrangement of the crossbeam 114 facilitates the hoisting of the graphite electrode onto the bearing seat 112. An electric cylinder 115 is mounted on the crossbeam 114 at a position corresponding to the bearing seat 112. A clamping seat 116 is mounted on the movable end of the electric cylinder 115. The graphite electrode is positioned by the cooperation of the clamping seat 116 and the bearing seat 112. It also includes an opening assembly 2 for synchronously processing the center holes at both ends of the graphite electrode 9. The opening assembly 2 includes movable seats 211 that are slidably mounted on the ground rails at both ends. The relative or opposite sliding of the two movable seats 211 is controlled by an adjustment assembly. The adjustment assembly can be a combination of a bidirectional lead screw and a threaded sleeve, or a combination of a gear or a toothed plate, as in the prior art. Connecting cylinders 212 are respectively provided on the opposite ends of the two movable seats 211. An installation frame 213 for sleeved on the ground rail is slidably mounted on the ground rail. The connecting cylinder 212 is slidably connected to the inner wall of the installation frame 213. An annular piston body 214 that abuts against the inner wall of the installation frame 213 is sleeved on the connecting cylinder 212. The movable seat 211 also has a motor 215 and a center drill 216 on the output shaft of the motor 215. The motor 215 is started to drive the center drill 216 to rotate and perform processing on the center hole of the end face of the graphite electrode 9. A sealing assembly 3 is provided between the inner wall of the installation frame 213 and the outer wall of the graphite electrode 9. To enable the sliding of the mounting frame 213 to follow the sliding of the movable seat 211, a positioning component 4 is provided between the mounting frame 213 and the connecting cylinder 212 to fix the two together. When the mounting frame 213 moves to engage with the graphite electrode 9, the sealing component 3 is triggered to seal the mounting frame 213 and the graphite electrode 9. At the same time, the positioning component 4 is also triggered to release the positioning between the mounting frame 213 and the connecting cylinder 212. By releasing the positioning component 4, the mounting frame 213 can remain stationary when the movable seat 211 slides during drilling, thus ensuring the seal between the mounting frame 213 and the graphite electrode 9. Dust suction holes and air inlets are respectively provided on the top and bottom surfaces of the mounting frame 213. A dust suction pipe 5 is connected to the dust suction hole, and the other end of the dust suction pipe 5 is connected to an external bag filter. The air inlet is equipped with a control component 6 that automatically adjusts the opening and closing size according to the pressure change of the dust suction pipe 5. By setting the control component 6, the pressure at the dust suction pipe 5 can be matched with the air intake at the air inlet, thereby ensuring a balanced airflow inside the mounting frame 213 during the dust suction process, so as to continuously adsorb the dust inside the mounting frame 213.

[0027] With the above structure, the graphite electrode 9 to be processed is first positioned. In the initial state, the positioning component 4 is in the positioning state. Then, the moving seats 211 at both ends are controlled to slide relative to each other. Due to the positioning of the positioning component 4, the mounting frames 213 at both ends are also driven to slide relative to each other, so that the mounting frames 213 fit onto the graphite electrode 9. During the fitting process, the sealing component 3 is automatically triggered to form a sealed space between the mounting frame 213 and the graphite electrode 9. At the same time, the positioning component 4 is triggered to release the positioning between the mounting frame 213 and the connecting cylinder 212. Then, the moving seats 211 at both ends are controlled to continue to slide relative to each other. At this time, the positioning component 4 is in the released positioning state. In this way, the mounting frame 213 will be stationary on the surface of the graphite electrode 9 to perform the sealing operation. At the same time, the motor 215 is started to drive the center drill 216 to rotate and perform the processing operation on the center hole at the end of the graphite electrode. The large amount of dust generated during processing is contained within the enclosed mounting frame 213. By activating the external bag filter, the suction pipe 5 is activated to adsorb the dust inside. During the operation of the suction pipe 5, the control component 6 can adapt the opening and closing size of the air inlet to the pressure of the suction pipe 5, thereby balancing the airflow within the mounting frame 213. This allows for continuous dust adsorption within the mounting frame 213, thus improving the comprehensiveness of dust adsorption.

[0028] Combined with appendix Figure 3 Appendix Figure 4 Appendix Figure 5 and attached Figure 6 As shown, the sealing assembly 3 includes a connecting ring 311 fixedly disposed on the outer end of the mounting frame 213. The connecting ring 311 is provided with an annular seat 312 extending into the mounting frame 213 and having an inclined structure. A sealing ring 313 is provided on the annular seat 312. Multiple notches 314 are provided on the sealing ring 313 and the annular seat 312 along the circumferential direction. A sealing gasket that fills the notches 314 is sleeved on the sealing ring 313. The annular seat 312 has a certain elasticity. A mating seat 315 that pushes the inclined surface of the annular seat 312 is slidably disposed in the mounting frame 213. A pushing assembly 7 that controls the sliding adjustment of the mating seat 315 is provided on the mounting frame 213. When the mounting frame 213 moves to the point of fitting the graphite electrode 9, the pushing assembly 7 is triggered to move and drive the mating seat 315 to push the annular seat 312. The pushing assembly 7 includes a pushing cylinder 711 slidably disposed on the outer wall of the mounting frame 213. The upper and lower ends of the pushing cylinder 711 are respectively fixed with guide rods 712 that slide in cooperation with the mounting frame 213. A first swing arm 713 is hinged to the guide rod 712, and a second swing arm 714 is hinged to the mating seat 315. A swing rod 715 is hinged together between the first swing arm 713 and the second swing arm 714. A bearing frame 716 is fixedly disposed on the inner wall of the mounting frame 213 and hinged to the middle of the swing rod 715. A limiting seat 111 is provided on the clamping seat 116 and the bearing seat 112 respectively to block the pushing cylinder 711. A fixing assembly 8 is also provided between the pushing cylinder 711 and the mounting frame 213 to position the two.

[0029] The working principle of the sealing assembly 3 is as follows: When the moving seat 211 drives the mounting frame 213 to slide to the left and the mounting frame 213 engages with the graphite electrode 9, the annular seat 312 and the sealing ring 313 also engage with the graphite electrode 9. When the pushing cylinder 711 and the guide rod 712 are blocked by the restricted seat 111, the mounting frame 213 continues to slide to the left and slides on the guide rod 712. At this time, the swing arm 715, which is hinged to the bearing frame 716, swings to the right. Under the action of the hinged swing arm 1 713 and swing arm 2 714, the mating seat 315 will slide to the left and engage with the annular seat 312. Under the action of the inclined surface and notch 1 314 of the annular seat 312, the annular seat 312 will contract inward, and at the same time, the sealing ring 313 will contract inward, so that the sealing ring 313 tightly abuts against the outer wall of the graphite electrode 9, thereby achieving a sealing effect.

[0030] Combined with appendix Figure 2 and attached Figure 9 As shown, the positioning component 4 includes fixed seats 411 disposed at the upper and lower ends of the mounting frame 213. Each fixed seat 411 is slidably provided with a positioning pin 412 having a spring-loaded function. The connecting cylinder 212 is provided with a pin hole for the positioning pin 412 to extend into. A frame 413 is provided on the outer end face of the positioning pin 412, and a wedge block 414 is provided on the frame 413. The support base 113 and the ground are respectively provided with support frames 415, and an adapter block 416 that cooperates with the wedge block 414 is provided on the support frame 415.

[0031] The positioning and release working principle of the positioning component 4 is as follows: In the initial state, the mounting frame 213 and the connecting cylinder 212 are fixedly connected by the cooperation of the positioning pin 412 and the pin hole. When the mounting frame 213 slides to the left and performs sealing operation on the sealing component 3, the adapter block 416 and the wedge block 414 will cooperate. This will drive the positioning pins 412 at both ends to move in opposite directions and separate from the pin hole, thereby releasing the positioning of the mounting frame 213 and the connecting cylinder 212.

[0032] Combined with appendix Figure 4 Appendix Figure 7 and attached Figure 8 As shown, in order to ensure the positional relationship between the guide rod 712 and the mounting frame 213 when the sealing component 3 is sealed, a fixing component 8 is provided between the push cylinder 711 and the mounting frame 213 to fix the two together. The fixing component 8 includes a slide rod 811 fixedly mounted on the push cylinder 711. The mounting frame 213 has a sliding hole for the slide rod 811 to extend into. A tapered hole 812 is provided inside the slide rod 811. A tapered block 813 extending into the tapered hole 812 is fixedly mounted on the bottom wall of the sliding hole. The size of the tapered block 813 is slightly larger than the inner diameter of the tapered hole 812. A notch 814 is provided on the tapered block 813 along the circumferential direction. A return spring 815 that fits onto the tapered block 813 is also fixedly mounted between the slide rod 811 and the bottom wall of the through hole. In order to release the positioning of the fixed component 8, a positioning element is provided between the push cylinder 711 and the limiting seat 111 to fix the two together. The positioning element includes magnets that cooperate with each other on the push cylinder 711 and the limiting seat 111. When the two magnets are close to each other, they are attracted together. The limiting seat 111 has tapered positioning rods at both ends. The push cylinder 711 has a tapered hole (not shown in the figure) for the tapered positioning rods to extend into. The positioning force between the push cylinder 711 and the limiting seat 111 is greater than the positioning force between the push cylinder 711 and the mounting frame 213.

[0033] The working principle of the fixing component 8 is as follows: when the push cylinder 711 is blocked by the limited seat 111, the mounting frame 213 continues to slide to the left, which drives the conical block 813 to extend into the conical hole 812. Since the size of the conical block 813 is slightly larger than the conical hole 812, and with the presence of the notch 814, after the conical block 813 extends into the conical hole 812, it will tightly abut against the inner wall of the conical hole 812, thereby fixing one end of the push cylinder 711 to the mounting frame 213. At the same time, with the cooperation of the two magnets and the conical positioning rod and the conical hole, the other end of the push cylinder 711 is fixedly connected to the limited seat 111. After the center hole is machined, the moving seat 211 is slid to the right, and the connecting cylinder 212 moves to the right within the mounting frame 213. When the connecting cylinder 212 slides to the rightmost end of the mounting frame 213, the moving seat 211 is slid to the right, which will cause the mounting frame 213 to slide to the right in sync. Since the positioning force between the pushing cylinder 711 and the limiting seat 111 is greater than the positioning force between the pushing cylinder 711 and the mounting frame 213, the positioning between the pushing cylinder 711 and the mounting frame 213 will be released first, and then the positioning between the pushing cylinder 711 and the limiting seat 111 will be released, thereby allowing the fixing component 8 and the positioning component to be reset.

[0034] Combined with appendix Figure 10 As shown, the control component 6 includes an air intake pipe 611 extending into the lower air intake hole. The inner wall of the air intake pipe 611 is provided with an annular boss 612, and a swing cover 613 is hinged to the annular boss 612. Through the hinge setting of the swing cover 613, when the pressure at the suction pipe 5 changes, the swing angle of the swing cover 613 can be automatically adjusted adaptively, thereby ensuring that the air intake volume of the lower air intake hole is matched with the pressure of the suction pipe 5, and ensuring the airflow balance in the mounting frame 213 under sealed conditions. The inner wall of the mounting frame 213 is also provided with guide plates 614 at both ends of the air intake pipe 611.

[0035] In a specific implementation of this invention, the graphite electrode 9 is first positioned by the clamping assembly 1, and then the moving seats 211 at both ends are controlled to slide relative to each other, while the mounting frames 213 at both ends slide relative to each other, so that the mounting frames 213 fit onto the graphite electrode 9. During the fitting process, the sealing assembly 3 is automatically triggered to form a sealed space between the mounting frame 213 and the graphite electrode 9. At the same time, the positioning assembly 4 is triggered to release the positioning between the mounting frame 213 and the connecting cylinder 212. Then, the moving seats 211 at both ends are controlled to continue to slide relative to each other. At this time, the positioning assembly 4 is in the released positioning state, so the mounting frame 213 will be stationary on the surface of the graphite electrode 9 for sealing. At the same time, the motor 215 is started to drive the center drill 216 to rotate and perform machining operations on the center hole at the end of the graphite electrode. The large amount of dust generated during processing is contained within the enclosed mounting frame 213. By activating the external bag filter, the suction pipe 5 is activated to adsorb the dust inside. During the operation of the suction pipe 5, the control component 6 can adapt the opening and closing size of the air inlet to the pressure of the suction pipe 5, thereby balancing the airflow within the mounting frame 213. This allows for continuous dust adsorption within the mounting frame 213, thus improving the comprehensiveness of dust adsorption.

[0036] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A graphite electrode center hole processing device, comprising a clamping assembly (1) for positioning the graphite electrode (9), characterized in that: It also includes an opening assembly (2) for synchronously processing the center holes at both ends of the graphite electrode (9). The opening assembly (2) includes movable seats (211) that are slidably mounted on the ground rails at both ends. Connecting cylinders (212) are respectively provided on the opposite ends of the two movable seats (211). A mounting frame (213) for fitting the graphite electrode (9) is slidably mounted on the ground rail. The connecting cylinder (212) is slidably connected to the inner wall of the mounting frame (213). A sealing assembly (3) is provided between the inner wall of the mounting frame (213) and the outer wall of the graphite electrode (9). A positioning component (4) is provided between the mounting frame (213) and the connecting cylinder (212) to fix the two together. When the mounting frame (213) moves to fit the graphite electrode (9), the sealing component (3) is triggered to seal the mounting frame (213) and the graphite electrode (9). At the same time, the positioning component (4) is triggered to release the positioning between the mounting frame (213) and the connecting cylinder (212). A dust suction hole and an air intake hole are respectively provided on the top and bottom surfaces of the mounting frame (213). A dust suction pipe (5) is connected to the dust suction hole, and a control component (6) is provided on the air intake hole to automatically adjust the opening and closing size according to the pressure change of the dust suction pipe (5).

2. The graphite electrode center hole processing equipment according to claim 1, characterized in that: The sealing assembly (3) includes a connecting ring (311) disposed on the end of the mounting frame (213). The connecting ring (311) is provided with an annular seat (312) extending into the mounting frame (213) and having an inclined structure. A sealing ring (313) is provided on the annular seat (312). Multiple notches (314) are provided on the sealing ring (313) and the annular seat (312) along the circumferential direction. A mating seat (315) is slidably disposed in the mounting frame (213) to push the inclined surface of the annular seat (312). A pushing assembly (7) is provided on the mounting frame (213) to control the sliding adjustment of the mating seat (315). When the mounting frame (213) moves to the point of fitting the graphite electrode (9), the pushing assembly (7) is triggered to move and drive the mating seat (315) to push the annular seat (312).

3. The graphite electrode center hole processing equipment according to claim 2, characterized in that: The pushing assembly (7) includes a pushing cylinder (711) slidably disposed on the outer wall of the mounting frame (213). A guide rod (712) is fixedly disposed on the pushing cylinder (711) and slidably engaged with the mounting frame (213). A first swing arm (713) is hinged to the guide rod (712), and a second swing arm (714) is hinged to the mating seat (315). A swing rod (715) is hinged together between the first swing arm (713) and the second swing arm (714). A bearing frame (716) is fixedly disposed on the inner wall of the mounting frame (213) and hinged to the middle of the swing rod (715). A limiting seat (111) is provided on the clamping assembly (1) to block the pushing cylinder (711). A fixing assembly (8) is also provided between the pushing cylinder (711) and the mounting frame (213) to position the two.

4. The graphite electrode center hole processing equipment according to any one of claims 1-3, characterized in that: The positioning component (4) includes a fixed seat (411) set on the mounting frame (213), a positioning pin (412) with a spring-back function is slidably provided in the fixed seat (411), a pin hole for the positioning pin (412) to be inserted is provided on the connecting cylinder (212), a frame (413) is provided on the outer end face of the positioning pin (412) and a wedge block (414) is provided on the frame (413), a support frame (415) is provided on the clamping component (1) and an adapter block (416) that cooperates with the wedge block (414) is provided on the support frame (415).

5. The graphite electrode center hole processing equipment according to claim 3, characterized in that: The fixing component (8) includes a slide rod (811) fixedly mounted on the push cylinder (711), a sliding hole for the slide rod (811) to extend into on the mounting frame (213), a conical hole (812) inside the slide rod (811), a conical block (813) extending into the conical hole (812) fixedly mounted on the bottom wall of the sliding hole, and a notch (814) along the circumferential direction on the conical block (813), and a return spring (815) for engaging the conical block (813) fixedly mounted between the slide rod (811) and the bottom wall of the through hole.

6. The graphite electrode center hole processing equipment according to claim 5, characterized in that: The push cylinder (711) and the limiting seat (111) are provided with a positioning component to fix the two together. The positioning component includes magnets that cooperate with each other on the push cylinder (711) and the limiting seat (111). The limiting seat (111) is provided with tapered positioning rods at both ends. The push cylinder (711) is provided with tapered holes for the tapered positioning rods to extend into.

7. The graphite electrode center hole processing equipment according to claim 1, characterized in that: The control component (6) includes an air intake pipe (611) extending into the lower air intake hole. An annular boss (612) is provided on the inner wall of the air intake pipe (611), and a swing cover (613) is hinged to the annular boss (612). A guide plate (614) is also provided on the inner wall of the mounting frame (213) at both ends of the air intake pipe (611).

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