CN118578527B - Carbon rod processing equipment - Google Patents

Abstract

The application belongs to the field of shaft machining equipment, and particularly relates to carbon rod machining equipment which performs circumferential limiting on square rods in square Kong Duiqie cutting machining on a circumferential limiting plate, and has a simple structure and does not influence feeding movement of the square rods. The cutting assembly comprises a plurality of cutting blades which are fixed at one end of the hollow main shaft and close to the circumferential limiting plate, the plurality of cutting blades are arranged at intervals in the axial direction of the hollow main shaft, and the distance between the tool tips of the cutting blades which are closer to the circumferential limiting plate and the center line of the blanking channel is further in the axial direction of the hollow main shaft, so that the cutting assembly is arranged, and can realize the step-by-step cutting processing of the square bar from thick to thin in the one-time feeding movement process of the square bar until the target diameter is reached. This carbon-point processing equipment simple structure, equipment cost is low, only need throw into the baffle box with the square rod one by one during the use can, easy operation, it is low to operating personnel's requirement, owing to need not anchor clamps clamping square rod, consequently, machining efficiency is higher.

Description

Carbon rod processing equipment

Technical Field

The present application relates to the technical field of shaft processing equipment, and in particular to a carbon rod processing equipment.

Background Art

With the proposal of "carbon peak and carbon neutrality", the photovoltaic industry is developing and expanding rapidly, and cost control has become an industry trend. As a related enterprise, carbon/carbon products must be controlled at every link. In the processing of carbon-carbon screws, it is necessary to strictly control costs and reduce labor and equipment investment.

At present, in the process of processing carbon-carbon screws, when processing square carbon rods into round carbon rods, the clamping is complicated when using ordinary lathes, and the technical requirements for personnel are high, and the learning period is long; when using CNC equipment for processing, the equipment cost is high, and there are restrictions on the processing length, and customized tooling is required. Therefore, there is an urgent need for a carbon rod processing equipment with high processing efficiency, low personnel requirements, and low equipment cost.

Summary of the invention

The embodiment of the present application provides a carbon rod processing device, which aims to improve the processing efficiency of processing square rods into round rods, reduce the requirements for operators, and reduce equipment costs.

To achieve the above-mentioned purpose, the present application provides a carbon rod processing device for processing a square rod into a round rod, the carbon rod processing device comprising:

The cutting device comprises a bracket, a hollow spindle, a driving mechanism, a cutting assembly and a circumferential limit plate, wherein the hollow spindle is rotatably arranged on the bracket, the interior of the hollow spindle serves as a material discharge channel, and the driving mechanism is used to drive the hollow spindle to rotate; the circumferential limit plate is arranged opposite to one end of the hollow spindle and is stationary relative to the bracket, and the circumferential limit plate is provided with a square hole located on the center line of the material discharge channel, and the size of the square hole is adapted to the cross-sectional size of the square rod to be processed; the cutting assembly comprises a plurality of cutting knives fixed to one end of the hollow spindle close to the circumferential limit plate, the plurality of cutting knives are arranged at intervals in the axial direction of the hollow spindle, and the tip of each cutting knives faces the center line of the material discharge channel, and in the axial direction of the hollow spindle, the closer the tip of the cutting knives is to the circumferential limit plate, the farther the distance between the tip of the cutting knives and the center line of the material discharge channel is; and

The feeding device comprises a material guide trough and a material pushing mechanism, one end of the material guide trough is connected to the square hole on the circumferential limit plate, and the material pushing mechanism is used to push the square rod located in the material guide trough into the square hole.

Optionally, a liner is coaxially arranged inside the hollow main shaft, and an inner wall of the liner is in a conical surface with a wide opening facing outward at one end close to the cutting assembly.

Optionally, a protective shell for covering the cutting assembly is provided on the bracket, a mounting hole located in the axial direction of the hollow spindle is provided on the protective shell, and the circumferential limit plate is installed on the mounting hole.

Optionally, a tool mounting plate is fixed to one end of the hollow spindle close to the circumferential limit plate, and each cutting tool is mounted on one side of the tool mounting plate close to the circumferential limit plate through a tool fixing seat.

Optionally, the cutting assembly includes three cutting knives, namely a first cutting knife, a second cutting knife and a third cutting knife, and the three cutting knife fixing seats are evenly distributed along the circumferential direction on one side of the cutting knife mounting disk close to the circumferential limit plate, and the cutting knife fixing seat is provided with three mounting holes at intervals along the axial direction of the hollow main shaft, and the first cutting knife, the second cutting knife and the third cutting knife are respectively installed in different mounting holes on the three cutting knife fixing seats, so that in the axial direction of the hollow main shaft, the distance between the first cutting knife and the circumferential limit plate, the distance between the second cutting knife and the circumferential limit plate, and the distance between the third cutting knife and the circumferential limit plate gradually decrease; and the protruding lengths of the first cutting knife, the second cutting knife and the third cutting knife in their respective mounting holes are different, so that in the radial direction of the cutting knife mounting disk, the distance between the tip of the first cutting knife and the center line of the feeding channel, the distance between the tip of the second cutting knife and the center line of the feeding channel, and the distance between the tip of the third cutting knife and the center line of the feeding channel gradually increase.

Optionally, the pushing mechanism comprises a linear cylinder, a cylinder body of the linear cylinder is arranged at one end of the material guide groove away from the square hole, and a piston rod of the linear cylinder performs linear reciprocating motion in the material guide groove.

Optionally, the material guiding groove is a V-shaped groove.

Optionally, the carbon rod processing equipment also includes a loading device, which includes a square rod storage rack arranged on one side of the length direction of the material guide trough, the square rod storage rack is inclined, the lower end of the square rod storage rack abuts against the side of the material guide trough, and a stopper is provided between the square rod storage rack and the side of the material guide trough, and a pushing piece is provided below the lower end of the square rod storage rack, and the pushing piece is used to push the square rod stopped by the stopper upward and make it pass the stopper and then roll into the material guide trough.

Optionally, the carbon rod processing equipment also includes a controller and a material sensor electrically connected to the controller, the material sensor is arranged at one end of the material guide trough close to the square hole, the pushing member and the pushing mechanism are both electrically connected to the controller, and when the material sensor does not detect the square rod, the controller first controls the pushing member to push the square rod on the square rod storage rack into the material guide trough, and then controls the pushing mechanism to push the square rod in the material guide trough into the square hole.

Optionally, the controller is also electrically connected to a material storage sensor and an alarm, wherein the material storage sensor is arranged on the square rod storage rack and is used to detect whether there are square rods on the stopper, and the alarm is used to emit sound and/or light alarm when the material storage sensor fails to detect the square rods.

The beneficial effect of the carbon rod processing equipment provided by the present application is that compared with the prior art, when the carbon rod processing equipment of the present application is used, the driving device drives the hollow main shaft to drive the cutting assembly to rotate synchronously, and the square rods are placed one by one in the guide groove of the feeding device, and the pushing mechanism pushes the square rods located in the guide groove into the square holes on the circumferential limit plate one by one. The square holes are adapted to the cross-sectional size of the square rods, and the square holes are used to limit the square rods circumferentially to prevent the square rods from rotating during the cutting process. The square rods extending out of the square holes are gradually processed from square rods to round rods of the target diameter under the step-by-step cutting processing of multiple cutting knives in the cutting assembly. The processed rods enter the unloading channel in the hollow main shaft for unloading under the push of subsequent square rods.

The carbon rod processing equipment uses the square holes on the circumferential limit plate to circumferentially limit the square rod in the cutting process. It has a simple structure and does not affect the feeding movement of the square rod. The cutting assembly includes a plurality of cutting knives fixed to one end of the hollow main shaft near the circumferential limit plate. The plurality of cutting knives are arranged at intervals in the axial direction of the hollow main shaft, and the tip of each cutting knives faces the center line of the unloading channel. In the axial direction of the hollow main shaft, the closer the tip of the cutting knives is to the circumferential limit plate, the farther the distance between the tip of the cutting knives and the center line of the unloading channel is. According to this arrangement, during one feeding movement of the square rod, the square rod can be cut step by step from coarse to fine until the target diameter is reached. The processed rod material is directly unloaded from the unloading channel in the hollow main shaft. In summary, the carbon rod processing equipment has a simple structure and low equipment cost. When in use, it is only necessary to put the square rods into the guide trough one by one. It is simple to operate and has low requirements on the operator. Since there is no need to clamp and fix the square rods, the processing efficiency is relatively high.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

in:

FIG1 is a schematic structural diagram of a carbon rod processing device according to an embodiment of the present application;

FIG2 is a schematic structural diagram of a circumferential limit plate in a carbon rod processing device according to an embodiment of the present application;

FIG3 is a schematic structural diagram of a cutting assembly in a carbon rod processing device according to an embodiment of the present application;

FIG4 is an axial schematic diagram of a cutting assembly in a carbon rod processing device according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a feeding device in a carbon rod processing device according to an embodiment of the present application.

Description of main component symbols:

100, cutting device; 110, bracket; 120, hollow spindle; 130, cutting assembly; 131, tool mounting plate; 132, tool fixing seat; 133, cutting tool; 140, circumferential limit plate; 141, square hole; 150, driven pulley; 160, liner; 170, protective shell;

200, feeding device; 210, material guide trough; 220, material pushing mechanism;

300, feeding device; 310, square rod storage rack; 320, pushing member; 330, stopper;

400, controller;

500. Material sensor.

DETAILED DESCRIPTION

In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

As described in the background technology, in the related technology, when processing square carbon rods into round carbon rods, when using conventional lathes, the clamping is complicated, the technical requirements for personnel are high, and the learning period is long; when using CNC equipment for processing, the equipment cost is high, and there are restrictions on the processing length, and customized tooling is required.

In order to solve the above-mentioned problems, an embodiment of the present application provides a carbon rod processing equipment for processing square rods into round rods. As shown in Figures 1 to 4, the carbon rod processing equipment includes a cutting device 100 and a feeding device 200. The cutting device 100 includes a bracket 110, a hollow spindle 120, a driving mechanism (not shown in the figure), a cutting assembly 130 and a circumferential limit plate 140. The hollow spindle 120 is rotatably arranged on the bracket 110. The interior of the hollow spindle 120 serves as a feeding channel. The driving mechanism is used to drive the hollow spindle 120 to rotate; the circumferential limit plate 140 is arranged opposite to one end of the hollow spindle 120 and is stationary relative to the bracket 110. The circumferential limit plate 140 is provided with a square shape located on the center line of the feeding channel. Hole 141, the size of the square hole 141 is adapted to the cross-sectional size of the square rod to be processed; the cutting assembly 130 includes a plurality of cutting knives 133 fixed to one end of the hollow main shaft 120 near the circumferential limit plate 140, the plurality of cutting knives 133 are arranged at intervals in the axial direction of the hollow main shaft 120, and the tip of each cutting knives 133 faces the center line of the material discharge channel, and in the axial direction of the hollow main shaft 120, the closer the tip of the cutting knives 133 is to the circumferential limit plate 140, the farther the distance between the tip of the cutting knives 133 and the center line of the material discharge channel is. The feeding device 200 includes a material guide trough 210 and a material pusher 220, one end of the material guide trough 210 is connected to the square hole 141 on the circumferential limit plate 140, and the material pusher 220 is used to push the square rod located in the material guide trough 210 into the square hole 141.

The working principle of the carbon rod processing equipment is as follows: the driving device drives the hollow main shaft 120 to drive the cutting assembly 130 to rotate synchronously, and the square rods are placed one by one in the guide groove 210 of the feeding device 200. The pushing mechanism 220 pushes the square rods located in the guide groove 210 into the square holes 141 on the circumferential limiting plate 140 one by one. The square holes 141 are adapted to the cross-sectional size of the square rods. The square holes 141 are used to limit the square rods circumferentially to prevent the square rods from rotating during the cutting process. The square rods extending out of the square holes 141 are gradually processed from square rods to round rods of the target diameter under the step-by-step cutting processing of the multiple cutting knives 133 in the cutting assembly 130. The processed rods enter the unloading channel in the hollow main shaft 120 for unloading under the push of subsequent square rods.

In the embodiment of the present application, the carbon rod processing equipment performs circumferential limit on the square rod in the cutting process through the square hole 141 on the circumferential limit plate 140, which has a simple structure and does not affect the feeding movement of the square rod. The cutting assembly 130 includes a plurality of cutting knives 133 fixed to one end of the hollow main shaft 120 near the circumferential limit plate 140, and the plurality of cutting knives 133 are arranged at intervals in the axial direction of the hollow main shaft 120, and the tip of each cutting knives 133 is facing the center line of the feeding channel. In the axial direction of the hollow main shaft 120, the closer the tip of the cutting knives 133 is to the circumferential limit plate 140, the farther the distance between the tip of the cutting knives 133 and the center line of the feeding channel is. Thus, the cutting tools are divided into multiple layers, which are distributed from large to small according to the processing size, and the tip positions are processed with the same roundness. In a feeding movement of the square rod, the square rod can be cut from coarse to fine step by step until the target diameter is reached, and the processed rod material is directly discharged from the feeding channel in the hollow main shaft 120. In summary, the carbon rod processing equipment has a simple structure and low equipment cost. When in use, it is only necessary to put the square rods into the guide trough 210 one by one. The operation is simple and the requirements for operators are low. Since there is no need to clamp and fix the square rods, the processing efficiency is high.

The hollow main shaft 120 can be rotatably connected to the bracket 110 through a bearing and a bearing seat matched therewith. The blade of the cutting knife 133 intersects the axial direction of the rod material at an angle greater than or equal to 45 degrees with the surface of the rod material, so that the cutting process of the square rod is similar to that of a pencil sharpener cutting a pencil. The driving mechanism can be realized by the cooperation of a driving motor and a transmission mechanism. In one implementation, the transmission mechanism adopts a belt drive, including a driving pulley, a driven pulley 150 and a belt connecting the driving pulley and the driven pulley 150. The driving pulley is fixed on the motor shaft of the driving motor, and the driven pulley 150 is fixed on the hollow main shaft 120. It can be imagined that the transmission mechanism can adopt a chain drive or a gear drive, which is not limited here.

It should be noted that during the cutting process of the square bars, since the circumferential limitation is achieved by the square holes 141 on the circumferential limiting plate 140, a portion of the end of each square bar cannot be circumferentially limited when the cutting process is about to end. Therefore, there is a situation where the square bar may not be completely cut to the target diameter. The portion that has not been processed to the target diameter only needs to be cut off later.

In one embodiment, as shown in FIG. 1 , a liner 160 is coaxially disposed in the hollow main shaft 120 , and an inner wall of the liner 160 close to one end of the cutting assembly 130 is in a conical surface with a wide opening facing outward.

The liner 160 can protect the inner wall of the hollow main shaft 120 . The inner wall of the liner 160 is provided with a trumpet-shaped opening at one end close to the cutting assembly 130 , so as to facilitate the entry of the bar material after cutting into the interior of the liner 160 .

Specifically, the liner 160 is detachably connected to the inner wall of the hollow main shaft 120 via a fastening screw to facilitate later replacement.

In one embodiment, as shown in FIG. 1 , a protective shell 170 for covering the cutting assembly 130 is disposed on the bracket 110 , a mounting hole located in the axial direction of the hollow spindle 120 is disposed on the protective shell 170 , and a circumferential limit plate 140 is mounted on the mounting hole.

The protective shell 170 can not only protect the cutting assembly 130, but also serve as a mounting carrier for the circumferential limit plate 140. Furthermore, the circumferential limit plate 140 can be detachably mounted on the protective shell 170, so that the circumferential limit plate 140 with square holes 141 of different sizes can be selected according to the cross-sectional size of the square bar to be processed.

In one embodiment, as shown in FIG. 1 , a tool mounting plate 131 (a flange plate may be used) is fixed to one end of the hollow spindle 120 close to the circumferential limit plate 140 , and each cutting tool 133 is respectively mounted on one side of the tool mounting plate 131 close to the circumferential limit plate 140 through a tool fixing seat 132 .

In a specific embodiment, as shown in combination with FIG. 1 and FIG. 3-4, the cutting assembly 130 includes three cutting knives 133, namely, a first cutting knives, a second cutting knives and a third cutting knives. The tool mounting plate 131 is close to the circumferential limit plate 140 on one side and three tool fixing seats 132 are evenly distributed along the circumferential direction. The tool fixing seat 132 is provided with three mounting holes at intervals along the axial direction of the hollow spindle 120. The first cutting knife, the second cutting knife and the third cutting knife are respectively installed in different mounting holes on the three tool fixing seats 132, so that the hollow spindle 120 is provided with a plurality of cutting knives. In the axial direction of 20, the distance between the first cutting knife and the circumferential limit plate 140, the distance between the second cutting knife and the circumferential limit plate 140, and the distance between the third cutting knife and the circumferential limit plate 140 gradually decrease; and the first cutting knife, the second cutting knife and the third cutting knife have different protruding lengths in their respective mounting holes, so that in the radial direction of the tool mounting plate 131, the distance between the tip of the first cutting knife and the center line of the feeding channel, the distance between the tip of the second cutting knife and the center line of the feeding channel, and the distance between the tip of the third cutting knife and the center line of the feeding channel gradually increase.

The square rod extending out of the square hole 141 is cut and processed by the third cutting tool, the second cutting tool and the first cutting tool in sequence during the feeding process, so as to realize step-by-step processing from coarse to fine until the target diameter is reached.

In one embodiment, as shown in FIG. 1 and FIG. 5 , the material pushing mechanism 220 includes a linear cylinder, the cylinder body of which is disposed at one end of the material guide trough 210 away from the square hole 141, and the piston rod of the linear cylinder performs linear reciprocating motion in the material guide trough 210. The use of a linear cylinder as the material pushing mechanism 220 has a simple structure and is convenient for installation and control. Of course, in other embodiments, the material pushing mechanism 220 may also use an electric cylinder or an electric push rod.

Preferably, the material guiding groove 210 is a V-shaped groove.

In one embodiment, as shown in Figures 1 and 5, the carbon rod processing equipment also includes a loading device 300, which includes a square rod storage rack 310 arranged on one side of the length direction of the material guide trough 210, the square rod storage rack 310 is inclined, the lower end of the square rod storage rack 310 abuts against the side of the material guide trough 210, and a stopper 330 is provided between the square rod storage rack 310 and the side of the material guide trough 210, and a pushing member 320 (cylinder or electric cylinder, etc.) is provided below the lower end of the square rod storage rack 310, and the pushing member 320 is used to push the square rod stopped by the stopper 330 upward and make it pass the stopper 330 and then roll down to the material guide trough 210.

When in use, the square bars to be processed are placed on the square bar storage rack 310, and the stopper 330 cooperates with the push piece 320 to realize the square bars being unloaded one by one. The operator only needs to place the square bars to be processed on the square bar storage rack 310 in advance, and there is no need to manually load the square bars into the guide trough 210 each time, thereby reducing the workload.

In the embodiment of the present application, the side of the guide trough 210 is slightly higher than the lower end of the square bar storage rack 310, and the stopper 330 is formed by the portion of the guide trough 210 higher than the lower end of the square bar storage rack 310 to prevent the square bars placed on the square bar storage rack 310 from sliding into the guide trough 210. Of course, in other embodiments, a protrusion may also be provided at the lower end of the square bar storage rack 310, and the stopper 330 may be formed by the protrusion to prevent the square bars placed on the square bar storage rack 310 from sliding into the guide trough 210.

In a specific embodiment, the carbon rod processing equipment also includes a controller 400 and a material sensor 500 electrically connected to the controller 400. The material sensor 500 is arranged at one end of the material guide trough 210 close to the square hole 141. The pushing member 320 and the pushing mechanism 220 are both electrically connected to the controller 400. When the material sensor 500 does not detect the square rod, the controller 400 first controls the pushing member 320 to push the square rod on the square rod storage rack 310 into the material guide trough 210, and then controls the pushing mechanism 220 to push the square rod in the material guide trough 210 into the square hole 141.

The material sensor 500 may be a mechanical contact sensor or a photoelectric sensor.

Through the cooperation of the controller 400 and the material sensor 500, the automation degree of the loading device 300 and the feeding device 200 is improved.

Furthermore, the controller 400 is also electrically connected to a material storage sensor (not shown in the figure) and an alarm (not shown in the figure). The material storage sensor is arranged on the square rod storage rack 310 and is used to detect whether there are square rods on the stopper 330. The alarm is used to emit sound and/or light alarm when the material storage sensor fails to detect the square rods.

Among them, the material storage sensor is similar to the material sensor 500, and the alarm can be an audible and visual alarm to remind the operator when there is no material in the square rod storage rack 310, so that the operator can perform operations such as replenishing materials or stopping the machine.

The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims (10)

1. A carbon rod processing device for processing a square rod into a round rod, characterized in that the carbon rod processing device comprises: The cutting device comprises a bracket, a hollow spindle, a driving mechanism, a cutting assembly and a circumferential limit plate, wherein the hollow spindle is rotatably arranged on the bracket, the interior of the hollow spindle serves as a material discharge channel, and the driving mechanism is used to drive the hollow spindle to rotate; the circumferential limit plate is arranged opposite to one end of the hollow spindle and is stationary relative to the bracket, and the circumferential limit plate is provided with a square hole located on the center line of the material discharge channel, and the size of the square hole is adapted to the cross-sectional size of the square rod to be processed; the cutting assembly comprises a plurality of cutting knives fixed to one end of the hollow spindle close to the circumferential limit plate, the plurality of cutting knives are arranged at intervals in the axial direction of the hollow spindle, and the tip of each cutting knives faces the center line of the material discharge channel, and in the axial direction of the hollow spindle, the closer the tip of the cutting knives is to the circumferential limit plate, the farther the distance between the tip of the cutting knives and the center line of the material discharge channel is; and The feeding device comprises a material guide trough and a material pushing mechanism, one end of the material guide trough is connected to the square hole on the circumferential limit plate, and the material pushing mechanism is used to push the square rod located in the material guide trough into the square hole. 2. The carbon rod processing equipment according to claim 1 is characterized in that a liner is coaxially arranged inside the hollow main shaft, and the inner wall of the liner is a conical surface with a large opening facing outward at one end close to the cutting assembly. 3. The carbon rod processing equipment according to claim 1 is characterized in that a protective shell for covering the cutting assembly is provided on the bracket, and a mounting hole located in the axial direction of the hollow main shaft is provided on the protective shell, and the circumferential limit plate is installed on the mounting hole. 4. The carbon rod processing equipment according to claim 1 is characterized in that a tool mounting plate is fixed to one end of the hollow main shaft close to the circumferential limit plate, and each of the cutting tools is installed on one side of the tool mounting plate close to the circumferential limit plate through a tool fixing seat. 5. The carbon rod processing equipment according to claim 4 is characterized in that the cutting assembly includes three cutting knives, namely a first cutting knife, a second cutting knife and a third cutting knife, and the three cutting knife fixing seats are evenly distributed along the circumferential direction on one side of the cutting knife mounting plate close to the circumferential limit plate, and the three mounting holes are arranged on the cutting knife fixing seat at intervals along the axial direction of the hollow main shaft, and the first cutting knife, the second cutting knife and the third cutting knife are respectively installed in different mounting holes on the three cutting knife fixing seats, so that in the axial direction of the hollow main shaft, the distance between the first cutting knife and the circumferential limit plate, the distance between the second cutting knife and the circumferential limit plate, and the distance between the third cutting knife and the circumferential limit plate gradually decrease; and the first cutting knife, the second cutting knife and the third cutting knife have different protruding lengths in their respective mounting holes, so that in the radial direction of the cutting knife mounting plate, the distance between the tip of the first cutting knife and the center line of the feeding channel, the distance between the tip of the second cutting knife and the center line of the feeding channel, and the distance between the tip of the third cutting knife and the center line of the feeding channel gradually increase. 6. The carbon rod processing equipment according to claim 1 is characterized in that the pushing mechanism includes a linear cylinder, the cylinder body of the linear cylinder is arranged at one end of the material guide groove away from the square hole, and the piston rod of the linear cylinder performs linear reciprocating motion in the material guide groove. 7. The carbon rod processing equipment according to claim 1 is characterized in that the material guide groove is a V-shaped groove. 8. The carbon rod processing equipment according to any one of claims 1-7 is characterized in that the carbon rod processing equipment also includes a loading device, the loading device includes a square rod storage rack arranged on one side of the length direction of the material guide trough, the square rod storage rack is inclined, the lower end of the square rod storage rack abuts against the side of the material guide trough, and a stopper is provided between the square rod storage rack and the side of the material guide trough, and a pushing piece is provided below the lower end of the square rod storage rack, the pushing piece is used to push the square rod stopped by the stopper upward and make it pass the stopper and then roll into the material guide trough. 9. The carbon rod processing equipment according to claim 8 is characterized in that the carbon rod processing equipment also includes a controller and a material sensor electrically connected to the controller, the material sensor is arranged at one end of the material guide trough close to the square hole, the pushing member and the pushing mechanism are both electrically connected to the controller, and when the material sensor does not detect the square rod, the controller first controls the pushing member to push the square rod on the square rod storage rack into the material guide trough, and then controls the pushing mechanism to push the square rod in the material guide trough into the square hole. 10. The carbon rod processing equipment according to claim 9 is characterized in that the controller is also electrically connected to a material storage sensor and an alarm, the material storage sensor is arranged on the square rod storage rack and is used to detect whether there are square rods on the stopper, and the alarm is used to emit sound and/or light alarm when the material storage sensor fails to detect the square rods.