Extrusion cutting system and method for ultra-long solid rod-shaped waste

Abstract

The invention belongs to the technical field of nuclear, and particularly relates to an extruding and cutting system and method for ultra-long solid rod-shaped waste, the system comprises a machine body, an extruding and cutting device and a clamping module, the extruding and cutting device and the clamping module are connected to the machine body, and the extruding and cutting device comprises an electric chuck, a cutter and a driving assembly; the electric chuck comprises an outer disc provided with a radial channel and an inner disc provided with coiled wires on the surface. The electric chuck is further provided with a clamping jaw, and the clamping jaw penetrates through the radial channel and is meshed with the coiled wire. The cutter comprises a cutter shaft and a cutting cutterhead, the cutter shaft is installed on the clamping jaw, and the cutting cutterhead is installed at the free end of the cutter shaft; the driving assembly comprises a driving feeding unit and a driving rotating unit; the driving feeding unit is connected with the inner disc; the driving rotation unit is connected with the outer disc. Compared with the prior art, the problem that in the prior art, an existing cutting mode cannot be applied to disintegration treatment of the ultra-long solid rod-shaped waste is solved. According to the scheme, extrusion cutting of the ultra-long solid rod-shaped waste in the high heat release chamber in the whole process is achieved.

Description

Technical Field

[0001] This invention belongs to the field of nuclear technology, specifically relating to a system and method for extruding and cutting ultra-long solid rod-shaped waste. Background Technology

[0002] In the nuclear fuel cycle, the dismantling of ultra-long solid rod-shaped waste originating from high-heat chambers presents challenges. These rods are hexagonal hollow structures made of stainless steel, with walls approximately 30mm thick and lengths exceeding 750mm. Furthermore, being ultra-hard, thick-walled tubular materials, their radioactivity levels can reach over 800 mSv, and their hardness over 600 HV. While cutting is an option for dismantling these rod-shaped waste, currently, there are no effective and targeted dismantling technologies available domestically or internationally. Moreover, the hardness, structure, and radiation levels of these rod-shaped waste make it difficult to utilize existing conventional cutting methods.

[0003] If hot cutting is used, aerosols will be generated during the cutting process, so only cold cutting can be considered. However, in cold cutting, cutting fluid is required for cooling and lubrication during the sawing process, which will generate a large amount of secondary waste liquid in a radioactive environment, making it unsuitable for use in this environment. External clamping turning technology is generally used for cutting round tubes and is not suitable for cutting hexagonal hollow structures. Extrusion cutting does not produce chips and can avoid the generation of secondary waste and waste liquid, but conventional extrusion cutting is only suitable for processing stainless steel tubes with a maximum wall thickness of 12mm. This is because when traditional extrusion cutting cuts solid rod-shaped waste with a wall thickness greater than 12mm, the waste will undergo violent plastic flow during the extrusion process, which can easily crack the material. Therefore, it cannot be directly used on solid rod-shaped waste with a wall thickness range of 20mm~30mm.

[0004] In the prior art: CN112238254A discloses a control method for cutting radioactive solid waste in the nuclear industry. The control method includes: fixing and clamping the radioactive solid waste at a predetermined position on a support frame; starting a radial feed device to control multiple cutters spaced apart on a chuck to move radially toward the center of the chuck; when the radial feed amount of the cutters is detected to reach a first preset requirement, starting a rotating device at a preset rotation speed to control the multiple cutters to start rotating around the radioactive solid waste, with the radial feed device and the rotating device working simultaneously to squeeze and cut the radioactive solid waste; when the radial feed amount of the cutters is detected to reach a second preset requirement, the radial feed device and the rotating device stop working.

[0005] CN112658372A discloses a remote-controlled cutting system for nuclear industrial pipes, comprising a cutting device and a remote control device for controlling the cutting device. The cutting device includes a base, a cutting tool assembly, a first drive device, and a second drive device. The cutting tool assembly includes a mounting bracket, a pressing mechanism, and multiple cutting tools. The mounting bracket is mounted on the base, and the pressing mechanism is rotatably connected to the mounting bracket. Multiple sliders are evenly arranged on the pressing mechanism, and the sliders can move radially along the pressing mechanism. The cutting tools are mounted on the sliders. The output shafts of both the first and second drive devices are connected to the pressing mechanism, and both the first and second drive devices are communicatively connected to the remote control device.

[0006] However, both of the above existing technologies use three blades for cutting. When the extrusion cutting module malfunctions or the motor fails, it is difficult to separate the blades from the end, and the technology does not have the function of removing the source and replacing the blade. Furthermore, the three-blade design is more prone to blade chipping due to its inherent mechanical instability. In addition, the above solutions lack the clamping function for ultra-long solid rod-shaped waste, and a certain axial force will be generated during the shearing process, which will affect the precision of the shearing.

[0007] Therefore, there is a need to design a device and method for dismantling ultra-long solid rod-shaped waste suitable for high-radioactivity sites. Summary of the Invention

[0008] The purpose of this invention is to provide a system and method for extruding and cutting ultra-long solid rod-shaped waste to solve at least one of the aforementioned problems. This addresses the issues of existing cutting methods for ultra-long solid rod-shaped waste lacking source removal and blade replacement capabilities, being prone to blade chipping, and lacking proper fixation. This solution enables the extrusion and cutting of ultra-long solid rod-shaped waste entirely within a high-heat-exothermic chamber.

[0009] The objective of this invention is achieved through the following technical solution: The first aspect of this invention discloses a system for extruding and cutting ultra-long solid rod-shaped waste. The system includes a body and an extrusion and cutting device and a clamping module respectively connected to the body. The extrusion cutting device includes an electric chuck, a cutting tool, and a drive assembly; The electric chuck includes an outer disc with a radial channel and an inner disc with coiled wires on its surface; the electric chuck is also provided with a radially movable jaw, the connecting end of which passes through the radial channel and engages with the coiled wires. The cutting tool includes a cutter shaft and a cutting disc, wherein the connecting end of the cutter shaft is mounted on a chuck, and the cutting disc is mounted on the free end of the cutter shaft; The drive assembly includes a drive feed unit and a drive rotation unit; the output end of the drive feed unit is connected to the inner disk of the electric chuck, and drives the tool to move radially along the electric chuck by generating a rotational differential between the inner and outer disks; the output end of the drive rotation unit is connected to the outer disk of the electric chuck, and drives the tool to rotate circumferentially around the central axis of the electric chuck by rotating the outer disk. The clamping module is used to clamp ultra-long solid rod-shaped waste that has been squeezed and cut.

[0010] Preferably, the extrusion cutting device further includes a chuck base; The chuck base is connected to the machine body; The electric chuck is rotatably mounted inside the chuck base.

[0011] Preferably, the chuck base is installed on the machine body via a locking module, wherein the locking module has a floating structure and is equipped with self-locking and retraction functions, so that the locking module will not loosen due to vibration.

[0012] Preferably, the chuck base is further provided with an adjustment baffle, which is installed on both sides of the chuck and is used to make fine adjustments during the installation of the chuck to ensure the centering of the chuck's central axis.

[0013] Preferably, the electric chuck is mounted in the chuck base via a slewing bearing and a deep groove ball bearing; The inner ring of the slewing bearing meshes with the output end of the drive rotation unit, and the drive rotation unit drives the inner ring of the slewing bearing to rotate, thereby driving the outer ring of the electric chuck to rotate. The deep groove ball bearing is sleeved on the outside of the electric chuck, and the deep groove ball bearing is coaxially arranged with the electric chuck.

[0014] Preferably, the electric chuck has a ring structure, and the ultra-long solid rod-shaped waste being squeezed and cut passes through the center of the electric chuck; the cutter moves radially to advance and retract the ultra-long solid rod-shaped waste, and rotates circumferentially to cut the ultra-long solid rod-shaped waste circumferentially.

[0015] Preferably, the inner disc of the electric chuck is a cycloidal reducer.

[0016] Preferably, a pair of jaws are symmetrically arranged on the electric chuck, and the cutting tool is mounted on the jaws in an axially symmetrical manner.

[0017] Preferably, the cutting tool is mounted on the jaws via a second mounting base; The cutter shaft is mounted on the second mounting base via cylindrical roller bearings and angular contact ball bearings.

[0018] Preferably, the drive feed unit includes a feed drive shaft, a feed reducer, and a feed coupling; one end of the feed drive shaft is connected to the inner plate of the electric chuck, and the other end of the feed drive shaft is connected to a power shaft system outside the system via the feed coupling; the feed reducer is connected between the feed drive shaft and the feed coupling, or the feed reducer is connected between the feed coupling and a power shaft system outside the system. The drive rotation unit includes a rotary drive shaft, a rotary reducer, and a rotary coupling; one end of the rotary drive shaft is connected to the outer disk of the electric chuck, and the other end of the rotary drive shaft is connected to a power shaft system outside the system through the rotary coupling; the rotary reducer is connected between the rotary drive shaft and the rotary coupling, or the rotary reducer is connected between the rotary coupling and the power shaft system outside the system.

[0019] Preferably, the external power shaft system is located in a safe area outside the high heat release chamber.

[0020] Preferably, the clamping module includes a slider mounting base, a release stop, a slide rail, and grippers; The slider mounting base is connected to the machine body; The slide rails are provided in at least one pair, and the pair of slide rails are mounted on the slider mounting base; The gripper is provided in at least one pair, which are arranged facing each other and slidably connected to the slide rail; The source removal block is installed on the slider mounting base below the gripper.

[0021] Preferably, the central axis of the clamping module coincides with the central axis of the electric chuck, so that after the ultra-long solid rod-shaped waste is clamped by the clamping module, it is located at the center of the electric chuck.

[0022] A second aspect of this invention discloses a method for extruding and cutting ultra-long solid rod-shaped waste, employing any of the systems described above for extruding and cutting ultra-long solid rod-shaped waste, and the method includes the following steps: S1: Clamp the extra-long solid rod-shaped waste in the clamping module; S2: Start the drive feed unit to feed the tool to the cutting pre-feed position; S3: Simultaneously start the drive feed unit and drive rotation unit to make the tool squeeze and cut the ultra-long solid rod-shaped waste according to the set speed and feed rate; S4: When the tool cuts to the target cutting depth, start the drive feed unit to retract the tool to a safe position; S5: Release the clamping module from the clamping state of the ultra-long solid rod-shaped waste, and complete the extrusion and cutting of the ultra-long solid rod-shaped waste by the system.

[0023] The working principle of this invention is as follows: This system employs a cutting method where the workpiece (extra-long solid rod-shaped waste) remains stationary, the cutting tool moves with the machine, and the electric chuck actively cuts the workpiece, thereby achieving the extrusion cutting of extra-long solid rod-shaped waste.

[0024] Compared with the prior art, the present invention has the following beneficial effects: 1. The extrusion cutting device of this system does not generate waste chips or radioactive solid waste during the entire process of use, and will not cause secondary pollution. It alleviates the treatment pressure and process requirements of downstream waste disposal, and can reduce the cost of overall dismantling and processing of ultra-long solid rod-shaped waste.

[0025] 2. The power source for driving the electric chuck and cutting tools to rotate and feed is a power shaft installed outside the high heat release chamber. This allows maintenance personnel to conveniently carry out regular and irregular maintenance work outside the high heat release chamber. In addition, dismantling personnel can also directly carry out the dismantling operation of the rod-shaped waste outside the high heat release chamber, reducing the radiation exposure of the workers and the possibility of occupational exposure.

[0026] 3. The various structures in this system adopt a modular design. For example, the extrusion cutting device is connected to the machine body through four floating locking modules on the chuck base, which facilitates the installation and disassembly of various parts of the system.

[0027] 4. This system adopts extrusion cutting, and the cutter moves only radially to advance and retract, making it easy to separate the cutter from the extra-long solid rod-shaped waste in the event of a malfunction or motor failure. Furthermore, the arrangement of the source removal stop blocks enables the system to remove the source and change the cutter. At the same time, this system uses a symmetrical double-blade structure for extrusion cutting, which naturally has higher stability compared to the existing three-blade structure and can reduce the possibility of blade breakage.

[0028] 5. This system uses a clamping module to clamp ultra-long solid rod-shaped waste, thereby effectively eliminating the axial force generated during the extrusion and cutting process. Attached Figure Description

[0029] Figure 1 A front view schematic diagram of the extrusion cutting device; Figure 2 This is a top view schematic diagram of the extrusion cutting device; Figure 3 This is a side view schematic diagram of the extrusion cutting device. Figure 4 A front view schematic diagram of the clamping module structure; Figure 5 This is a side view of the clamping module. Figure 6A flowchart illustrating the extrusion and cutting process for this system; In the figure: 1-Extrusion cutting device; 2-Clamping module; 11-Chuck base; 12-Locking module; 13-Electric chuck; 14-Cutting tool; 15-Drive feed unit; 16-Drive rotation unit; 21-Slider mounting base; 22-Source removal stop; 23-Slide rail; 24-Gripper. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0031] Example 1 A system for extruding and cutting ultra-long solid rod-shaped waste, such as Figure 1-5 As shown, the system includes a machine body and an extrusion and cutting device 1 and a clamping module 2 respectively connected to the machine body. The extrusion cutting device 1 includes an electric chuck 13, a cutting tool 14, and a drive assembly; The electric chuck 13 includes an outer disc with a radial channel and an inner disc with coiled wires on its surface; the electric chuck 13 is also provided with a radially movable jaw, the connecting end of which passes through the radial channel and engages with the coiled wires. The cutting tool 14 includes a cutting shaft and a cutting disc, wherein the connecting end of the cutting shaft is mounted on a chuck, and the cutting disc is mounted on the free end of the cutting shaft; The drive assembly includes a drive feed unit 15 and a drive rotation unit 16. The output end of the drive feed unit 15 is connected to the inner disk of the electric chuck 13, and the tool 14 is driven to move radially along the electric chuck 13 by generating a rotational differential between the inner and outer disks. The output end of the drive rotation unit 16 is connected to the outer disk of the electric chuck 13, and the tool 14 is driven to rotate circumferentially around the central axis of the electric chuck 13 by rotating the outer disk. The clamping module 2 is used to clamp the ultra-long solid rod-shaped waste that has been squeezed and cut.

[0032] A method for extruding and cutting ultra-long solid rod-shaped waste, employing a system for extruding and cutting ultra-long solid rod-shaped waste as described above, such as... Figure 6 As shown, the method includes the following steps: S1: Clamp the extra-long solid rod-shaped waste in clamping module 2; S2: Start the drive feed unit 15 to feed the tool 14 to the cutting pre-feed position; S3: Simultaneously start the drive feed unit 15 and drive rotation unit 16, so that the tool 14 can squeeze and cut the ultra-long solid rod-shaped waste at the set rotation speed and feed rate. S4: When the tool 14 cuts to the target cutting depth, start the drive feed unit 15 to retract the tool 14 to a safe position; S5: Release the clamping module 2 from the clamping state of the ultra-long solid rod-shaped waste, and complete the extrusion and cutting of the ultra-long solid rod-shaped waste by the system.

[0033] More specifically, in this embodiment: This solution is a system for extruding and cutting ultra-long solid rod-shaped waste, enabling workers to cut ultra-long solid rod-shaped waste inside a high-heat-exothermic chamber from outside the chamber.

[0034] Specifically, this technical solution provides an extrusion cutting system that can extrude and cut ultra-long solid rod-shaped waste in a high-radioactivity environment. The system includes an extrusion cutting device 1 and a clamping module 2, both of which are installed on the system body (such as a machine tool).

[0035] The extrusion cutting device 1 includes a chuck base 11, an electric chuck 13, a cutting tool 14, a drive assembly, and a locking module 12.

[0036] a) such as Figure 1-3 As shown, the chuck base 11 is made of forging to ensure machining strength. The chuck base 11 is specifically composed of a mounting base, an adjusting baffle, a chuck base, a fixing pin, and other accessories. The mounting base is fixed to the machine body by four locking modules 12 at the four corners, such as Figure 2 As shown, the locking module 12 is a floating locking module 12. The connection and release of the floating locking module 12 are specifically achieved through the locking and releasing between its internal locking rod and fixing pin. The base of the floating locking module 12 is fixed to the module to be connected by bolts, and the fixing rod is fixed to the base by bolts. The locking module 12 has self-locking and retraction functions, so that it will not loosen due to equipment vibration. The locking module 12 is installed at the four corners of the chuck base 11 to ensure that even if vibration occurs during use, it will not affect the basic function of the device.

[0037] The chuck base is fixedly installed on the mounting base and is used to assemble the electric chuck 13 (the electric chuck 13 is installed inside the chuck base).

[0038] Adjustable baffles are installed on the left and right sides of the mounting base, specifically on both sides of the chuck base. They are used for fine-tuning the electric chuck 13 during installation to ensure alignment between the electric chuck 13 and the central axis of the chuck base. These baffles also provide additional support to the chuck base 11 during the extrusion cutting process, reducing vibrations generated during cutting. The adjustable baffles are connected to the mounting base and chuck base by bolts, allowing for fine-tuning of the chuck during installation.

[0039] A fixing pin is installed on the top of the chuck base, and this fixing pin engages with a corresponding pin hole on the top of the chuck base to ensure that the installation positions of the electric chuck 13 and the chuck base 11 are completely consistent, avoiding the center of the electric chuck 13 from shifting from the axis of the machine tool spindle due to errors caused by manual adjustment. In addition, the use of the fixing pin can also absorb some of the torque and shear force generated during the cutting process through mechanical hard limiting, preventing relative movement between the electric chuck 13 and the chuck base 11. In particular, there are two fixing pins, one is a circular locating pin, and the other is a diamond-shaped pin (or a chamfered pin, which has a degree of freedom in the direction perpendicular to the line connecting the two pins). Thus, through the micro-compensation capability of the diamond-shaped pin, the fixing pin or hole is prevented from being damaged due to inaccurate alignment during installation. At the same time, it restricts the two translational degrees of freedom and one rotational degree of freedom of the electric chuck 13, achieving stable and unique positioning.

[0040] b) such as Figure 1-3 As shown, the electric chuck 13 consists of an outer disk and an inner disk. The outer disk completely covers the outside of the inner disk and the outer disk and the inner disk are arranged coaxially. The outer disk has a radial channel for the tool 14 to move radially. The surface of the inner disk is provided with a coil wire that can cause the tool 14 to move radially. The inner disk is configured as a cycloidal gear reduction structure (cycloidal reducer).

[0041] In addition to the outer and inner discs that constitute the chuck body, the electric chuck 13 also includes a slewing bearing and a deep groove ball bearing. The electric chuck 13 is mounted on a chuck base located in front of the chuck base 11 via the slewing bearing. The other fulcrum (external structural support for bearing axial force and overturning moment) is located on a bearing on the right side of the base. A gear is installed on the inner ring of the slewing bearing, which meshes with the spindle of the electric chuck 13 to convert the torque output from the drive assembly into rotational motion of the electric chuck 13. The deep groove ball bearing is mounted in front of the gear of the slewing bearing, serving as a rotating component supporting the electric chuck 13, ensuring smooth rotation and reducing friction and wear.

[0042] The electric chuck 13 has a circular structure, through which the ultra-long solid rod-shaped waste to be extruded and cut passes; and under the support of the drive assembly and the slewing bearing and deep groove ball bearing, the electric chuck 13 can rotate around its own central axis, that is, it can rotate around the ultra-long solid rod-shaped waste to be extruded and cut.

[0043] The electric chuck 13 also includes jaws (a pair arranged symmetrically in this design). The mounting ends of the jaws engage with the coil wires on the inner disc, and the jaws extend from the radial channel. Thus, during the extrusion and cutting process, one power source from the drive assembly drives the outer disc to rotate, and the other power source drives the inner disc to rotate. By creating a rotational speed difference between the outer and inner discs, the coil wires can push the jaws along the radial channel for feeding during the rotation of the electric chuck 13, thereby propelling the jaws forward. In other words, the electric chuck 13 can convert the rotational motion from the drive assembly into linear motion of the jaws.

[0044] c) such as Figure 1-3 As shown, two cutters 14 are provided, which are respectively mounted on the jaws on both sides of the electric chuck 13 via the second mounting base. This arrangement is because the rod-shaped solid waste has a hexagonal hollow structure, and during the cutting process, the cutter 14 will generate 6 impact forces for each rotation. Therefore, in order to reduce the impact force on the cutter 14, the two cutters 14 are aligned along the central axis.

[0045] The cutting tool 14 is specifically composed of cylindrical roller bearings, angular contact ball bearings, a cutting disc, and a cutting shaft.

[0046] The cutter shaft is supported by cylindrical roller bearings and angular contact ball bearings and mounted at the front end of the second mounting base. The cutter shaft can directly transmit the rotational power generated by the rotation of the outer disk of the electric chuck 13 to the cutting disc, causing the cutting disc to contact the ultra-long solid rod-shaped waste and rotate around the cylindrical roller bearings due to the collision, thereby driving the cutting disc to rotate to cut the ultra-long solid rod-shaped waste. Among them, the cylindrical roller bearings are used to bear the axial load generated by the extrusion cutting process of the cutter 14, ensuring the cutting disc's resistance to deformation during material extrusion; the angular contact ball bearings are used to bear the radial load generated during the extrusion cutting process, improving the axial rigidity and vibration resistance of the cutter 14.

[0047] The cutting disc comes into direct contact with the ultra-long solid rod-shaped waste under the rotation drive of the outer disc, thereby realizing the extrusion cutting of the ultra-long solid rod-shaped waste. At the same time, the cutting tool 14 also rotates around its own axis.

[0048] During the extrusion cutting of ultra-long solid rod-shaped waste, the cutter 14 rotates around the ultra-long solid rod-shaped waste while also being fed through the planar thread pair (coil) in the electric chuck 13, thus achieving "rotation and feeding at the same time" cutting.

[0049] d) such as Figure 1-3 As shown, the drive assembly consists of a drive feed unit 15 and a drive rotation unit 16.

[0050] The drive feed unit 15 consists of a feed drive shaft, a feed reducer, a feed coupling, and gears (transmission mechanisms are installed between these components to transmit power). The drive feed unit 15 is connected to the inner disk of the electronic chuck via the feed drive shaft. The other end of the feed drive shaft is connected to the power shaft system located outside the high-heat-exothermic chamber via the feed coupling, which is fixed to the mounting base of the chuck base 11. Thus, the power source of the power shaft system outside the high-heat-exothermic chamber transmits power to the feed reducer via the feed coupling. The feed reducer reduces the rotational speed to the required range by controlling the gear ratio, while simultaneously amplifying the torque proportionally to ensure that the tool 14 can stably apply sufficient force. This drive feed unit 15 drives the inner disk of the electric chuck 13 to rotate, thereby controlling the radial movement of the tool 14 along the electric chuck 13.

[0051] The drive rotation unit 16 consists of a rotary drive shaft, a rotary reducer, a rotary coupling, and gears. The drive rotation unit 16 is connected to the outer disk of the electronic chuck via the rotary drive shaft. The other end of the rotary drive shaft is connected to a power shaft system located outside the high-heat-exothermic chamber via the rotary coupling, which is fixed to the mounting base of the chuck base 11. Thus, the power source of the power shaft system outside the high-heat-exothermic chamber transmits power to the rotary reducer via the rotary coupling. The rotary reducer reduces the rotational speed to the required range by controlling the gear ratio, while simultaneously amplifying the torque proportionally to overcome material resistance during cutting and ensure accuracy. This drive rotation unit 16 is used to drive the outer side of the electric chuck 13 to rotate, thereby controlling the rotation of the tool 14 around the central axis of the electric chuck 13.

[0052] e) such as Figure 4 , Figure 5 As shown, the clamping module 2 can clamp ultra-long solid rod-shaped waste of different specifications from the high-heat-exothermic chamber. During the clamping process, the solid rod-shaped waste will deform and displace under the axial force generated during the extrusion and cutting process, thereby eliminating the damage to the tool 14 caused by the axial force generated during the extrusion and cutting process.

[0053] The clamping module 2 consists of a slider mounting base 21, a source removal stop 22, a slide rail 23, and grippers 24. The clamping module 2 is mounted entirely on a ball screw slide table. A servo motor drives the ball screw, allowing precise control of the clamping module 2's horizontal movement along the body (or machine bed) of the extrusion cutting device 1. The ball screw slide table is located axially in front of and / or behind the extrusion cutting device 1 and is directly connected to the clamping module 2. Therefore, when the servo motor drives the ball screw, the entire clamping module 2 (including the slider mounting base, source removal stop, slide rail, and grippers) moves horizontally along the axial direction of the extra-long solid rod-shaped waste.

[0054] The slider mounting base 21 is used to assemble the source removal block 22, the slide rail 23, and the gripper 24, and it is connected to the machine body by screws.

[0055] The grippers 24 are provided in pairs and are arranged facing each other for gripping solid rod-shaped waste. The gripping surface of the grippers 24 is a V-shaped structure that matches the surface structure (hexagon) of the solid rod-shaped waste, and a hard toothed surface is used to increase the sliding friction between the grippers 24 and the rod-shaped waste.

[0056] A pair of slide rails 23 are fixed to the surface of the slider mounting base 21 and face each other. Clamping jaws 24 are respectively fixed to the slide rails 23. Thus, the axial force generated during cutting of the rod-shaped waste can be released by the axial movement between the clamping jaws 24 and the slide rails 23, preventing the tool 14 from chipping or breaking. Furthermore, two threaded holes are provided on the clamping jaws 24 to adjust the friction between the clamping jaws 24 and the slide rails 23 by changing the bolt tightening, thereby changing the magnitude (displacement distance) of the displacement when the rod-shaped waste releases the axial force.

[0057] The source removal block 22 is detachably mounted on the slider mounting base 21. Its connection method is a slot-based plug-in structure, and it also features a quick-release mechanism for rapid locking / releasing. The source removal block 22 is located below the gripper 24 and abuts against it. When the clamping module 2 malfunctions during cutting, such as jamming or seizing, the source can be removed using the source removal block 22: pulling out the source removal block 22 simultaneously removes the gripper 24 and the rod-shaped waste. During normal cutting, the source removal block 22 limits the displacement caused by the axial force during the cutting of the rod-shaped waste.

[0058] When using this system: The entire process was conducted in a high-heat-emission chamber and observed using a radiation-resistant camera system pre-installed within the chamber. The electric chuck 13 is driven to rotate by the drive rotation unit 16, so that the cutter 14 is parallel for easy observation by the camera. The power hand clamp in the high heat release chamber is used to clamp the extra-long solid rod-shaped waste and transfer it to the extrusion cutting device 1 and clamping module 2 of this system. Move the extra-long solid rod-shaped waste into the extrusion cutting device 1, and adjust the extra-long solid rod-shaped waste horizontally to the target workpiece position (e.g., Figure 6 (as shown in ①). After adjustment, use clamping module 2 to lock the extra-long solid rod-shaped waste (such as...) Figure 6 (as shown in ②) After the extra-long solid rod-shaped waste is clamped and locked by the clamping module 2, the drive feed unit 15 is activated to radially feed the tool 14 to the cutting pre-feed position (e.g., Figure 6 (as shown in ③) After feeding to the pre-cutting position, the drive feed unit 15 and drive rotation unit 16 are activated, and the operating tool 14 performs extrusion cutting on the extra-long solid rod-shaped waste according to the set rotation speed and feed rate (e.g. Figure 6 As shown in ④), the rotation speed and feed rate can be adjusted to ensure that the impact force during the cutting process will not cause the tool 14 to break. After the cutting head of the tool 14 is fed to the set cutting depth, the drive rotation unit 16 drives the outer side of the electric chuck 13 to rotate, making the tool 14 parallel to ensure that the tool 14 will not interfere with other devices during the retraction process. The drive feed unit 15 is then operated to retract the tool 14 to a safe position (e.g., Figure 6 (as shown in ⑤) Loosen clamping module 2 jaws 24 (e.g.) Figure 6 (as shown in ⑥) The power pliers are used again to clamp and squeeze the extra-long solid rod-shaped waste after cutting, moving it into a special solid waste collection device in a high-heat chamber to complete the barreling operation.

[0059] At this point, the extrusion and cutting process for ultra-long solid rod-shaped waste is complete.

[0060] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A system for extrusion cutting of super-length solid rod-like waste, the system comprising a machine body and an extrusion cutting device (1) and a clamping module (2) connected to the machine body respectively, characterized in that, the extrusion cutting device (1) comprises an electric chuck (13), a cutter (14) and a driving assembly; the electric chuck (13) comprises an outer disc provided with radial channels and an inner disc provided with disc filaments on the surface; the electric chuck (13) is further provided with a jaw movable in the radial direction, the connecting end of the jaw passes through the radial channels and engages with the disc filaments; the cutter (14) comprises a cutter shaft and a cutting disc, wherein the connecting end of the cutter shaft is mounted on the jaw, and the cutting disc is mounted on the free end of the cutter shaft; the driving assembly comprises a driving feed unit (15) and a driving rotation unit (16); the output end of the driving feed unit (15) is connected to the inner disc of the electric chuck (13), and the cutter is driven to move radially along the electric chuck (13) by generating a rotational differential speed between the inner disc and the outer disc; the output end of the driving rotation unit (16) is connected to the outer disc of the electric chuck (13), and the cutter is driven to rotate circumferentially around the central axis of the electric chuck (13) by the rotation of the outer disc; the clamping module (2) is used for clamping the super-length solid rod-like waste to be extrusion cut.

2. A system for extrusion cutting of solid waste in the form of a rod of super- length according to claim 1, characterized in that, the extrusion cutting device (1) further comprises a chuck base (11); the chuck base (11) is connected to the machine body; the electric chuck (13) is rotatably mounted in the chuck base (11).

3. A system for extrusion cutting of solid waste in the form of a rod of very large length according to claim 2, characterized in that, the electric chuck (13) is mounted in the chuck base (11) through a slewing bearing and a deep groove ball bearing; the inner ring of the slewing bearing engages with the output end of the driving rotation unit (16), and the inner ring of the slewing bearing is driven to rotate by the driving rotation unit (16) to drive the outer ring of the electric chuck (13) to rotate; the deep groove ball bearing is coaxially arranged outside the electric chuck (13).

4. A system for extrusion cutting of solid waste in the form of a rod of super- length according to claim 1, characterized in that, the electric chuck (13) is of a ring structure, and the super-length solid rod-like waste to be extrusion cut passes through the center of the electric chuck (13); the cutter (14) realizes the feed and retreat of the super-length solid rod-like waste by radial movement, and realizes the circumferential cutting of the super-length solid rod-like waste by circumferential rotation.

5. A system for extrusion cutting of solid waste in the form of a rod of very large length according to claim 1, characterized in that, the inner disc of the electric chuck (13) is a cycloid speed reducer.

6. A system for extrusion cutting of solid waste in the form of a rod of very large length according to claim 1, characterized in that, the jaws are arranged in pairs on the electric chuck (13) in axial symmetry, and the cutter is mounted on the jaws in axial symmetry.

7. A system for extrusion cutting of waste material in the form of a solid rod of very great length according to claim 1, characterized in that, the cutter (14) is mounted on the jaws through a second mounting base; the cutter shaft is mounted on the second mounting base through a cylindrical roller bearing and an angular contact ball bearing.

8. A system for extrusion cutting of waste material in the form of a solid rod of super- length according to claim 1, characterized in that, The driving feed unit (15) comprises a feed transmission shaft, a feed speed reducer and a feed coupling; one end of the feed transmission shaft is connected with the inner disc of the motor chuck (13), and the other end of the feed transmission shaft is connected with the power shaft system outside the system through the feed coupling; the feed speed reducer is connected between the feed transmission shaft and the feed coupling, or the feed speed reducer is connected between the feed coupling and the power shaft system outside the system; The driving rotation unit (16) comprises a rotation transmission shaft, a rotation speed reducer and a rotation coupling; one end of the rotation transmission shaft is connected with the outer disc of the motor chuck (13), and the other end of the rotation transmission shaft is connected with the power shaft system outside the system through the rotation coupling; the rotation speed reducer is connected between the rotation transmission shaft and the rotation coupling, or the rotation speed reducer is connected between the rotation coupling and the power shaft system outside the system.

9. A system for extrusion cutting of waste material in the form of a solid rod of super- length according to claim 1, characterized in that, The clamping module (2) comprises a sliding block mounting seat (21), a source removal stop block (22), a sliding rail (23) and a clamping jaw (24); The sliding block mounting seat (21) is connected to the machine body; The sliding rail (23) is provided at least with a pair, and the pair of sliding rails (23) are mounted on the sliding block mounting seat (21); The clamping jaw (24) is provided at least with a pair, and the pair of clamping jaws (24) are oppositely arranged and slidably connected to the sliding rail (23); The source removal stop block (22) is mounted on the sliding block mounting seat (21) below the clamping jaw (24).

10. A method of extrusion cutting of an overlength solid rod of waste, characterized by, The system for extruding and cutting the super-length solid rod-shaped waste according to any one of claims 1-9, the method comprises the following steps: S1: clamping the super-length solid rod-shaped waste in the clamping module (2); S2: starting the driving feed unit (15) to feed the cutter (14) to the cutting pre-feed position; S3: simultaneously starting the driving feed unit (15) and the driving rotation unit (16) to make the cutter (14) extrude and cut the super-length solid rod-shaped waste at the set rotation speed and feed amount; S4: when the cutter (14) cuts to the target cutting depth, starting the driving feed unit (15) to make the cutter (14) retreat to the safe position; S5: releasing the clamping state of the clamping module (2) on the super-length solid rod-shaped waste, and completing the extrusion and cutting of the super-length solid rod-shaped waste by the system.

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