Automatic cutting equipment for waste heat recoverer assembly

Abstract

The invention relates to the technical field of metal pipeline cutting, in particular to waste heat recoverer assembly automatic cutting equipment which comprises an annular frame, a lantern ring frame capable of rotating is assembled in the annular frame, and a plurality of saw blade assemblies are annularly assembled on the surface of the lantern ring frame through bolts. A limiting assembly used for limiting the position of the circular pipe is assembled at the position, corresponding to the saw blade assembly, in the annular frame, the saw blade assembly comprises a circular cutting saw blade and a protective cover used for cutting protection, and the protective cover is installed on the surface of the lantern ring frame. The annular frame is arranged to change the movement path of the cutting saw blade, the multiple limiting pipes are arranged on the cutting path and used for containing round pipes needing to be cut, the more the limiting pipes are, the more the round pipes need to be cut are, the cutting efficiency can be improved, and meanwhile in the moving process of the cutting saw blade, the cutting efficiency is improved. And the tool retracting action of the previous limiting pipe and the tool feeding action of the next limiting pipe are combined, so that the cutting steps are reduced, and the cutting efficiency is further improved.

Description

Technical Field

[0001] The present invention relates to the technical field of metal pipe cutting, and specifically provides an automatic cutting device for a waste heat recovery unit assembly. Background Art

[0002] The waste heat recovery unit is one of the core devices in the waste heat recovery system, mainly used to capture the waste heat (residual heat) discharged during industrial production, energy utilization and other processes, and transfer it to other media (such as water, air, oil, etc.) through heat exchange to achieve the reuse of heat. The core components of the waste heat recovery unit include heat exchangers, heat pipes, waste heat transfer pipes and valves, etc. According to the different temperatures and corrosivities in the use environment, heat pipes are made of different metal materials such as stainless steel, copper or aluminum. Among them, copper pipes are the most common heat pipes on the market.

[0003] In the production of waste heat recovery units, it is necessary to cut copper pipes into the required lengths. According to the different wall thicknesses of copper pipes, there are many cutting methods available. For copper pipes with relatively thick walls, a method of stacking and cutting multiple copper pipes simultaneously can be selected. The cutting process includes four steps: feeding the tool, retracting the tool, feeding the material, and feeding the tool again, which affects the cutting efficiency. Moreover, other operations such as grinding need to be carried out later, which also affects the production efficiency of the product. For copper pipes with relatively thin walls, not only the number of pipes cut simultaneously needs to be significantly reduced, but in some cases, only one copper pipe can be cut at a time. Moreover, a cutting method of "slow tool feed and stable cutting" needs to be selected during cutting, which further reduces the cutting efficiency. If a high cutting efficiency is to be ensured, it will also affect the product quality of the copper pipes themselves. Summary of the Invention

[0004] To solve the above problems, the present invention provides an automatic cutting device for a waste heat recovery unit assembly to solve the problems mentioned in the above background art.

[0005] To achieve the above object, the present invention adopts the following technical solutions: An automatic cutting device for a waste heat recovery component, including an annular frame with at least two saw blade components assembled on its surface, and a rotatable collar frame assembled inside the annular frame. A plurality of saw blade components are assembled annularly on the surface of the collar frame through bolts. A limiting component for defining the position of the circular tube is assembled at the position corresponding to the saw blade components inside the annular frame; The saw blade component includes a circular cutting saw blade and a protective cover for cutting protection. The protective cover is installed on the surface of the collar frame, and the protective cover and the cutting saw blade are installed through bearings to prevent the rotation of the protective cover and the cutting saw blade from interfering with each other. A motor one for driving the cutting saw blade to rotate and cut is assembled on the collar frame; The collar frame and the cutting saw blade rotate simultaneously. The rotation of the collar frame drives a plurality of cutting saw blades to move and feed simultaneously to cut the circular tube on the limiting component, so as to improve the cutting efficiency. When the collar frame rotates to drive the cutting saw blade to move and feed to the next position of the pipeline, it retracts the knife from the pipeline at the previous position, combining the feeding and retracting steps to improve the cutting efficiency.

[0006] Preferably, the surface of the protective cover is provided with an integrally formed sleeve, and the surface of the sleeve is provided with a plurality of protruding integrally formed strip-shaped clamping blocks. The surface of the collar frame is provided with a clamping groove adapted to the outer shape of the sleeve. The sleeve and the strip-shaped clamping blocks are clamped inside the clamping groove. The tail of the sleeve is provided with a thread groove adapted to the thread of the bolt, and the bolt is threadedly sleeved at the tail position of the sleeve.

[0007] Preferably, the collar frame is a toothed ring, and a plurality of gears meshing with the collar frame are assembled inside the annular frame. A motor two for driving one of the gears to rotate is assembled outside the annular frame. An arc-shaped mounting frame is assembled on the surface of the collar frame and is assembled inside the annular frame through bearings.

[0008] Preferably, the limiting component includes at least three limiting tubes with a triangular cross-section. The limiting tube located in the middle position is assembled inside the annular frame, and all three sides are in a non-horizontal state. A feeding guide frame is assembled on the front of the annular frame, and a feeding component is assembled on the back of the annular frame.

[0009] Preferably, one of the cutting saw blades is replaced with a grinding disc. The feeding guide frame is set to be L-shaped. One end of the circular tube abuts against the surface of the feeding guide frame. A base is assembled at the bottom of the feeding guide frame. The feeding guide frame and the adjacent limiting tube are installed and connected through a spring, and the feeding guide frame can slide along the base. An electromagnet is assembled on the surface of the base, and the feeding guide frame itself has magnetism.

[0010] Preferably, the feeding component includes a slide rail assembled between two limiting tubes. At least two mechanical grippers are assembled on the surface of the slide rail, and the mechanical grippers can move along the slide rail. The mechanical grippers are set to be triangular in shape adapted to the limiting tube.

[0011] Preferably, an elastic restraint band is assembled inside the mechanical gripper, and both ends of the restraint band are respectively fixed at the top and bottom positions inside the mechanical gripper.

[0012] Preferably, the limiting component includes a limiting tube with a circular cross-section. The limiting tube is assembled inside the annular frame. Two conveyor belts are assembled on the surface of the annular frame corresponding to each limiting tube. The conveyor belts are assembled on the conveyor frame. A fixing frame is assembled on the surface of the annular frame, and a rotatable double-headed screw is installed on the fixing frame. Both ends of the double-headed screw respectively thread through the two conveyor frames.

[0013] Preferably, a guiding frame is assembled at the rear end of the annular frame, and a plurality of limiting grooves with the same inner diameter as the limiting tube are provided on the surface of the guiding frame.

[0014] Preferably, a feeding guide frame is assembled at the front end of the annular frame, and a feeding guide groove is formed on the surface of the feeding guide frame.

[0015] The above technical solution has the following advantages or beneficial effects: The present invention provides an automatic cutting device for a waste heat recovery component. By setting an annular frame to change the movement path of the cutting saw blade, and arranging a plurality of limiting tubes on the cutting path for placing the circular tubes to be cut. The more the number of limiting tubes, the more circular tubes can be cut, which can also improve the cutting efficiency. At the same time, during the movement of the cutting saw blade, the retraction action of the previous limiting tube and the feeding action of the next limiting tube are combined, reducing the cutting steps and further improving the cutting efficiency. While ensuring the cutting efficiency, it can minimize the damage to the circular tube itself as much as possible. Cooperating with the corresponding feeding guide frame and feeding guide groove, it reduces the depression of the tube body caused by the circular tube falling due to its own gravity, so as to ensure the production quality of the copper tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the detailed description of the non-restrictive embodiments with reference to the following drawings, the present invention and its features, shape, and advantages will become more obvious. The same reference numerals indicate the same parts in all the drawings. The drawings are not deliberately drawn to scale, and the emphasis is on showing the gist of the present invention.

[0017] Figure 1 FIG. 1 is a schematic perspective view of Embodiment 1 of an automatic cutting device for a waste heat recovery component provided by the present invention.

[0018] Figure 2 FIG. Figure 1 FIG. 2 is a schematic perspective view of guiding the cut circular tubes in FIG. 1.

[0019] Figure 3 FIG. Figure 1 FIG. 3 is a schematic perspective view of the feeding component in FIG. 1.

[0020] Figure 4 FIG. 4 is a partial schematic perspective view of Embodiment 1.

[0021] Figure 5 is Figure 4 Schematic diagram of the three-dimensional structure for driving the collar frame to rotate inside.

[0022] Figure 6 is Figure 4 Schematic diagram of the three-dimensional structure for driving the cutting saw blade to rotate inside.

[0023] Figure 7 Schematic diagram of the three-dimensional structure of the installation and disassembly state of the cutting saw blade and the protective cover in Embodiment 1.

[0024] Figure 8 Schematic diagram of the three-dimensional structure of Embodiment 2 of an automatic cutting device for a waste heat recovery component provided by the present invention.

[0025] Figure 9 Schematic diagram of the three-dimensional structure of the feeding component in Embodiment 2.

[0026] Figure 10 Schematic diagram of the three-dimensional structure for driving the collar frame to rotate in Embodiment 2.

[0027] Figure 11 Schematic diagram of the three-dimensional structure for driving the cutting saw blade to rotate in Embodiment 2.

[0028] Figure 12 Partial schematic diagram of the three-dimensional structure of the position of the conveyor belt in Embodiment 2.

[0029] In the figure: 1, annular frame; 2, collar frame; 3, cutting saw blade; 4, protective cover; 5, motor 1; 6, sleeve; 7, strip-shaped clamping block; 8, card slot; 9, bolt; 10, gear; 11, motor 2; 12, mounting frame; 13, limiting tube; 14, material guiding frame; 15, grinding disc; 16, base; 17, spring; 18, electromagnetic block; 19, slide rail; 20, mechanical gripper; 21, restraint belt; 22, conveyor belt; 23, double-headed screw; 24, fixed frame; 25, guiding frame; 26, limiting groove; 27, material guiding groove. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In order to enable those in the technical field to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Figure 1 and Figure 8 Two embodiments of an automatic cutting device for a waste heat recovery component are disclosed, which are used for cutting various pipes inside the waste heat recovery component, including but not limited to copper pipes, stainless steel pipes, aluminum pipes, etc. Depending on the application environment, the wall thicknesses of the selected pipes are also different. Thicker pipes are usually selected in high-temperature and high-pressure areas, high-flow areas, or areas with particulate media. Thinner pipes are usually selected in general areas. For scenarios with extremely high requirements for heat transfer efficiency, low medium pressure, and weak corrosiveness, even thinner pipes need to be selected. Different thicknesses of pipes require different cutting methods.

[0033] As Embodiment 1 of the present invention, Figure 1 It is for cutting pipes with a relatively thick wall thickness, including an annular frame 1 with an inner mating collar frame 2. Both the annular frame 1 and the collar frame 2 are annular. In this embodiment, two sets of saw blade assemblies are assembled on the surface of the collar frame 2, respectively located directly above and below the collar frame 2. A limiting component for defining the position of the circular pipe is assembled inside the annular frame 1. Refer to Figure 4 , the saw blade assembly includes a circular cutting saw blade 3 and an external protective cover 4. The limiting component includes a limiting tube 13. One set of limiting tubes 13 with a triangular cross-section is assembled on each of the left and right sides inside the collar frame 2. A large number of circular pipes are stacked and placed through the limiting tubes 13. The protective cover 4 can rotate around the center of the collar frame 2, driving the cutting saw blade 3 to approach or move away from the circular pipe. The cutting saw blade 3 itself can rotate to achieve the cutting of the circular pipe.

[0034] The two vertically arranged cutting saw blades 3 rotate and approach the two horizontally arranged limiting tubes 13. The cutting process of the cutting saw blade 3 can be divided into two processes: feed and retract. Taking one of the cutting saw blades 3 as the initial position, this cutting saw blade 3 feeds to cut the circular pipe inside the first set of limiting tubes 13 on the moving path. After cutting, it retracts. The retracting process is the process in which this cutting saw blade 3 feeds to cut the circular pipe inside the second set of limiting tubes 13 on the moving path. Therefore, the more the number of groups of limiting tubes 13, the higher the efficiency of cutting the circular pipe. It should be noted that since the circular pipe inside the second set of limiting tubes 13 has been cut by another cutting saw blade 3 when the initial cutting saw blade 3 cuts the circular pipe inside the first set of limiting tubes 13, after the initial cutting saw blade 3 moves away from the first set of limiting tubes 13, the circular pipe needs to be moved immediately to ensure that the initial cutting saw blade 3 can perform secondary cutting immediately.

[0035] Such as Figure 1 and Figure 3As shown in the figure, the number of each group of limiting tubes 13 is set to three, which are respectively located at the front end, middle part and rear end of the collar frame 2. The limiting tube 13 at the middle position is assembled on the annular frame 1, and the limiting tubes 13 at the front and rear ends are assembled on the annular frame 1 or other fixed positions through fixing seats (the fixing seat connected to the rear limiting tube 13 is not shown in the figure). It is necessary to ensure that the three limiting tubes 13 are at the same height position. The distance between the limiting tube 13 at the front end position and the limiting tube 13 at the middle position is the distance that the cutting saw blade 3 can pass through. An feeding assembly is arranged between the limiting tube 13 at the rear end position and the limiting tube 13 at the middle position for moving the round tube.

[0036] The feeding assembly includes a slide rail 19 and a mechanical gripper 20 that can move along the slide rail 19. The number of mechanical grippers 20 corresponding to each group of limiting tubes 13 is set to two, which are used to alternately grip and move the round tube. When one mechanical gripper 20 is in the gripping state, the other mechanical gripper 20 is in the released state. The mechanical gripper 20 in the gripping state moves. During cutting, the mechanical gripper 20 in the released state grips the round tube, and the mechanical gripper 20 in the gripping state releases the round tube and moves to the initial position to facilitate subsequent feeding operations. The mechanical gripper 20 has the function of automatically opening, closing and gripping, and its shape is adapted to the shape of the limiting tube 13. In order to ensure the firmness of the mechanical gripper 20 gripping multiple round tubes at the same time, an elastic restraint band 21 is assembled inside it. The two ends of the restraint band 21 are respectively fixed at the top and bottom positions inside the mechanical gripper 20. When gripping, the restraint band 21 wraps the surface of the round tube and firmly presses the round tube inside the mechanical gripper 20.

[0037] As Figures 4 - 7 shown in the figure, to facilitate the rotation and revolution of the cutting saw blade 3, the collar frame 2 is set as a toothed ring, and its surface is provided with a plurality of equally spaced teeth. An arc-shaped mounting frame 12 is assembled on the surface of the collar frame 2 and is assembled inside the annular frame 1 through bearings. Four gears 10 meshing with the collar frame 2 are assembled inside the annular frame 1 and are symmetrically arranged outside the collar frame 2 to ensure the stability of the rotation of the collar frame 2. The gears 10 are installed inside the annular frame 1 through rotating shafts. A second motor 11 is assembled outside the annular frame 1 to drive any one of the gears 10 to rotate. The surface of the protective cover 4 is provided with a sleeve 6 integrally formed with it. The surface of the sleeve 6 is provided with a plurality of protruding integrally formed strip-shaped blocks 7 to limit the protective cover 4 and prevent the sleeve 6 from rotating, so as to avoid affecting the cutting of the round tube by the cutting saw blade 3. A slot 8 adapted to the outer shape of the sleeve 6 is opened at the corresponding position of the collar frame 2 to facilitate the installation of the cutting saw blade 3. To prevent the cutting saw blade 3 from falling off, a threaded groove is provided at the tail of the sleeve 6, and a bolt 9 is installed at the position corresponding to the threaded groove.

[0038] The surface of the cutting saw blade 3 is fitted with a round rod passing through the sleeve 6. The round rod and the sleeve 6 are installed through bearings. On the surface of the collar frame 2, a first motor 5 is fitted to drive the cutting saw blade 3 to cut the round tube. For the case of cutting multiple round tubes simultaneously, one of the cutting saw blades 3 can be replaced with a grinding disc 15 for grinding. At this time, grinding can be carried out while cutting to improve the production efficiency of the subsequent round tubes.

[0039] As Figure 1 and Figure 2 shown, to facilitate the grinding of the cut round tubes, an L-shaped material guiding frame 14 is provided at the front end of the limiting tube 13 at the front end. The front end of the round tube directly abuts against the material guiding frame 14. First, the cutting saw blade 3 moves for cutting, and the cut end is located on the frontmost limiting tube 13 and the material guiding frame 14. Then, the grinding disc 15 moves to the cutting position for grinding. A base 16 is fitted at the bottom of the material guiding frame 14. To ensure the stability of the base 16, it can be fixed to the ground or the workbench. A sliding groove is opened on the base 16, and a slider adapted to the sliding groove is fitted on the material guiding frame 14. The slider moves inside the sliding groove. The material guiding frame 14 and the adjacent limiting tube 13 are installed and connected through a spring 17.

[0040] After the grinding is completed, the subsequent round tubes squeeze the previously cut and ground round tubes to move, squeezing the material guiding frame 14. When the cut round tubes are completely located on the material guiding frame 14, the position of the material guiding frame 14 is positioned by an external force. The side of the material guiding frame 14 away from the axis of the annular frame 1 is set as an inclined surface, so that the round tubes can slide down along the inclined surface on the surface of the material guiding frame 14 to reduce the damage to the round tubes caused by gravity. The two sides of the bottom base 16 are also set as inclined surfaces to ensure the quality of the subsequent produced products. To facilitate the positioning of the material guiding frame 14, an electromagnetic block 18 is fitted on the surface of the base 16. The material guiding frame 14 itself has a certain magnetism. The electromagnetic block 18 is energized to adsorb the material guiding frame 14, thereby releasing the clamping of the round tubes. When the round tubes slide down, the electromagnetic block 18 is de-energized, and the spring 17 rebounds to pull the material guiding frame 14 to move back to the initial position for the next use.

[0041] As an embodiment 2 of the present invention, as Figure 8 shown, in the actual cutting production process, the thinner the wall thickness of the round tube, the fewer the number of round tubes located inside the same limiting tube 13, and the feed speed also needs to be reduced. In this embodiment, the limiting tube 13 is set as a pipe with a circular cross-section. Only one cut round tube can pass through each limiting tube 13. At this time, there are eight limiting tubes 13, and the number of cutting saw blades 3 is also set to eight, which are annularly arrayed on the surface of the collar frame 2. The installation positions of the limiting tubes 13 and the cutting saw blades 3 are offset.

[0042] In this process, multiple round tubes can be cut simultaneously. Although the feed speed of cutting will slow down, due to the increase in the number of tubes cut simultaneously, the cutting efficiency will still increase. Moreover, the more tubes are cut simultaneously, the higher the cutting efficiency. Similarly, this cutting method combines the feed step and the retraction step into one, effectively reducing the cutting working time, improving the cutting efficiency, and ensuring the cutting quality of round tubes with relatively thin wall thickness, indirectly ensuring the subsequent product quality.

[0043] As Figure 9 and Figure 12 shown, in order to avoid the surface of the thin-walled round tube being dented by the mechanical gripper 20, this embodiment adopts a feeding method different from that of the feeding component in Embodiment 1. In this embodiment, two rotatable conveyor belts 22 (this is a prior art and the specific structure will not be elaborated here) are assembled on the surface of the annular frame 1 corresponding to the position of each limiting tube 13. The conveyor belts 22 are assembled on the conveyor frame. A fixed frame 24 is assembled on the surface of the annular frame 1. A rotatable double-headed screw 23 is installed on the fixed frame 24. The two ends of the double-headed screw 23 respectively thread through the two conveyor frames. By rotating the double-headed screw 23, the distance between the two conveyor belts 22 is adjusted. The surface of the conveyor belt 22 has a certain adhesiveness and contacts the round tube through adhesive contact to avoid the round tube being dented due to overpressure, so as to realize the conveying of round tubes with different diameters. It should be noted that the conveyor belts 22 need to be cleaned and replaced regularly. A guide frame 25 is assembled at the rear end of the annular frame 1. A plurality of limiting grooves 26 with the same inner diameter as the limiting tube 13 are provided on the surface of the guide frame 25, and the corresponding limiting tube 13 and the limiting groove 26 are at the same height to facilitate feeding.

[0044] As Figures 10 - 11 shown, the rotation and revolution of the cutting saw blade 3 are the same as the driving methods in Embodiment 1, and the cutting saw blade 3 can also be replaced when it is damaged.

[0045] As Figure 8 shown, when discharging the cut round tubes, a guide frame 14 is assembled at the front end of the annular frame 1. Two guide grooves 27 are opened on the surface of the guide frame 14. The guide grooves 27 are divided into an arc path and an inclined path. After the cut round tube is located inside the guide groove 27, it will first enter the inside of the arc path and slide down along the arc path to the inside of the inclined path to buffer the impact brought by gravity. For round tubes with different diameters, a thickening plate can be installed inside the guide groove 27 to narrow the width of the path of the guide groove 27 and reduce the impact of the round tube during the falling process to ensure the quality of subsequent product production.

[0046] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0047] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "arranged", "connected", "installed", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific circumstances.

[0048] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments. The devices and structures not described in detail therein should be understood to be implemented in a common manner in the art; any person skilled in the art can make many possible changes and modifications without departing from the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, which does not affect the essence of the present invention. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An automatic cutting device for a waste heat recovery component, characterized in that: It includes a ring frame (1) with at least two saw blade assemblies surface-mounted thereon. An internally rotatable collar frame (2) is assembled inside the ring frame (1). A plurality of the saw blade assemblies are annularly assembled on the surface of the collar frame (2) by bolts (9). A position-limiting assembly for defining the position of a circular pipe is assembled inside the ring frame (1). The saw blade assembly includes a circular cutting saw blade (3) and a protective cover (4) for cutting protection. The protective cover (4) is mounted on the surface of the collar frame (2). The protective cover (4) and the cutting saw blade (3) are installed through a bearing to prevent the rotation of the protective cover (4) and the cutting saw blade (3) from interfering with each other. A motor one (5) for driving the cutting saw blade (3) to rotate and cut is assembled on the collar frame (2). The collar frame (2) and the cutting saw blade (3) rotate simultaneously. The rotation of the collar frame (2) drives a plurality of cutting saw blades (3) to simultaneously move in for cutting the circular pipe on the position-limiting assembly, so as to improve the cutting efficiency. When the collar frame (2) rotates to drive the cutting saw blade (3) to move in for the next-position pipe and retract for the previous-position pipe, the feeding and retracting steps are combined to improve the cutting efficiency.

2. The automatic cutting device for a waste heat recovery unit assembly according to claim 1, wherein: An integrally formed sleeve (6) is provided on the surface of the protective cover (4). A plurality of protruding integrally formed strip-shaped clamping blocks (7) are provided on the surface of the sleeve (6). A clamping groove (8) adapted to the outer shape of the sleeve (6) is formed on the surface of the collar frame (2). The sleeve (6) and the strip-shaped clamping blocks (7) are clamped inside the clamping groove (8). A thread groove adapted to the thread of the bolt (9) is provided at the tail of the sleeve (6). The bolt (9) is threadedly sleeved at the tail position of the sleeve (6).

3. The automatic cutting device for a waste heat recovery unit assembly according to claim 1, characterized in that: The collar frame (2) is a toothed ring. A plurality of gears (10) meshing with the collar frame (2) are assembled inside the ring frame (1). A motor two (11) for driving one of the gears (10) to rotate is assembled outside the ring frame (1). An arc-shaped mounting frame (12) is assembled on the surface of the collar frame (2) and is assembled inside the ring frame (1) through a bearing.

4. The automatic cutting device for a waste heat recovery component according to claim 1, characterized in that: The position-limiting assembly includes at least three position-limiting pipes (13) with a triangular cross-section. The position-limiting pipe (13) located in the middle position is assembled inside the inner side of the ring frame (1), and all three sides are in a non-horizontal state. A material guiding frame (14) is assembled on the front surface of the ring frame (1), and a feeding assembly is assembled on the back surface of the ring frame (1).

5. The automatic cutting device for a waste heat recovery unit assembly according to claim 4, wherein: One of the cutting saw blades (3) is replaced with a grinding disc (15). The material guiding frame (14) is arranged in an L shape. One end of the circular pipe abuts against the surface of the material guiding frame (14). A base (16) is assembled at the bottom of the material guiding frame (14). The material guiding frame (14) and the adjacent position-limiting pipe (13) are installed and connected through a spring (17), and the material guiding frame (14) can slide along the base (16). An electromagnetic block (18) is assembled on the surface of the base (16), and the material guiding frame (14) itself has magnetism.

6. The automatic cutting device for a waste heat recovery unit assembly according to claim 4, characterized in that: The feeding assembly includes a slide rail (19) assembled between two limiting tubes (13). At least two mechanical grippers (20) are assembled on the surface of the slide rail (19). The mechanical grippers (20) can move along the slide rail (19). The mechanical grippers (20) are arranged in a triangular shape adapted to the shape of the limiting tubes (13).

7. An automatic cutting device for a waste heat recovery component according to claim 6, characterized in that: An elastic restraint strap (21) is assembled inside the mechanical gripper (20). The two ends of the restraint strap (21) are respectively fixed at the top and bottom positions inside the mechanical gripper (20).

8. The automatic cutting device for a waste heat recovery unit assembly according to claim 1, characterized in that: The limiting assembly includes a limiting tube (13) with a circular cross-section. The limiting tube (13) is assembled inside an annular frame (1). Two conveyor belts (22) are assembled on the surface of the annular frame (1) corresponding to each limiting tube (13). The conveyor belts (22) are assembled on a conveyor frame. A fixed frame (24) is assembled on the surface of the annular frame (1). A rotatable double-headed screw (23) is installed on the fixed frame (24). The two ends of the double-headed screw (23) respectively thread through the two conveyor frames.

9. An automatic cutting device for a waste heat recovery unit assembly, characterized in that: A guiding frame (25) is assembled at the rear end of the annular frame (1). A plurality of limiting grooves (26) with the same inner diameter as the limiting tube (13) are provided on the surface of the guiding frame (25).

10. An automatic cutting device for a waste heat recovery unit assembly, characterized in that: A material guiding frame (14) is assembled at the front end of the annular frame (1). A material guiding groove (27) is formed on the surface of the material guiding frame (14).

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