Cutting device for producing metal-clad pipe

Abstract

The application discloses a cutting device for metal-clad pipe production and belongs to the technical field of metal-clad pipe production, which comprises a machine body, a moving seat arranged at the lower side of the inside of the machine body, a cutting part arranged at the inner upper side of the moving seat, a fixed cylinder fixedly connected to the left side of the machine body, first sliding grooves arranged at the front and back sides of the left end of the fixed cylinder, first sliding blocks slidingly connected to the inside of the first sliding grooves, and a moving frame fixedly connected to the left sides of the two first sliding blocks. The moving frame is arranged to adjust the positions of the first cutting part and the second cutting part under the pushing of the first electric push rod. Since the clad layer is first stripped during the cutting process of the metal-clad pipe, the laser is prevented from directly irradiating the stripped adhesive layer and metal mesh layer, heat degradation and interlayer shear stress are prevented, thereby realizing the layered cutting of "first mechanically cutting the clad layer and then laser cutting the base layer" and inhibiting the damage of the heat affected zone to the intermediate adhesive layer.

Description

Technical Field

[0001] This invention relates to the field of metal-clad tube manufacturing technology, and more specifically, to a cutting device for metal-clad tube manufacturing. Background Technology

[0002] Metal-clad pipe, officially known as a metal-clad flexible hose for gas appliance connections, is a specialized hose used to connect household gas pipelines to gas appliances such as stoves and water heaters. It primarily serves as a flexible and safe conduit for gas appliance connections, replacing traditional, easily aging rubber hoses. It boasts excellent pressure resistance, aging resistance, and protection against mechanical damage. The outer layer of the metal-clad pipe is a flame-retardant PVC / PE coating, the middle layer is made of stainless steel wire mesh or armored steel strip, and the inner core is a rubber or plastic composite hose.

[0003] The cutting method for metal-clad pipes depends on the cladding material (anti-corrosion coating / plastic / metal) and the pipe diameter / wall thickness. The core principle is to treat the cladding before cutting the base material, or to use a heatless / low-heat method to avoid damaging the cladding. For manual pipe cutting, a cutter matching the pipe diameter should be selected, and oil should be applied to the cut. After cutting, a reamer should be used to reduce the opening. For abrasive wheel cutting machines, the cut surface must be firmly secured, the cut surface perpendicular to the abrasive wheel, and the operator should not be directly facing the abrasive wheel. For laser cutting, the power needs to be reduced, the laser head should be about 10mm away from the workpiece, and the coating should be burned before cutting. In the existing technology, when laser cutting metal-clad tubes, the local temperature of the laser far exceeds the upper limit of the temperature resistance of the adhesive layer. The heat-affected zone will cause thermal degradation of the intermediate adhesive layer, CTE mismatch to generate interfacial shear stress, and auxiliary gas to penetrate into the interlayer. Cutting gas will penetrate into the interlayer along the thermal damage gap. The coupling effect of these three factors will cause thermal damage to the adhesive layer between the intermediate metal mesh layer and the inner pressure-bearing tube, resulting in delamination and debonding. Summary of the Invention

[0004] In view of the problems existing in the prior art, the purpose of this invention is to provide a cutting device for the production of metal-clad tubes.

[0005] To solve the above problems, the present invention adopts the following technical solution, which can realize step-by-step fixed-depth cutting of the outer coating and inner substrate of the metal-clad pipe. By introducing distance feedback and a coordinated "mechanical-laser" dual cutting mode, the thermal degradation and debonding of the adhesive layer caused by direct high-temperature laser irradiation is avoided, thereby ensuring the connection reliability of the pipe end.

[0006] A cutting device for producing metal-clad tubes includes a machine body and a movable seat disposed on the lower side inside the machine body. The upper inner side of the movable seat is provided with a cutting component, and the cutting component includes a fixed cylinder fixedly connected to the left side of the machine body. The fixed cylinder has a first sliding groove on both the front and rear sides of the left end. A first slider is slidably connected inside the first sliding groove. A movable frame is fixedly connected to the left side of the two first sliders. A first electric push rod is fixedly connected to the lower side of the inside of the first sliding groove. The telescopic end of the first electric push rod is fixedly connected to the lower side of the first slider. A first cutting component is fixedly connected to the upper side of the left end of the movable frame. A second cutting component is fixedly connected to the lower side of the left end of the movable frame. The fixed cylinder runs through the tube from left to right. The first cutting component is a blade-type cutting machine used to peel off the outer coating of the tube. The second cutting component is a laser cutting machine used to cut the inner substrate of the tube. Both the first and second cutting components are equipped with laser rangefinders on the side facing the tube to be cut. The laser rangefinders are electrically connected to an external controller to provide real-time distance measurement data feedback to the first electric push rod, so as to control the alternating feed depth of the blade-type cutting machine and the laser cutting machine.

[0007] Furthermore, the inner and outer sides of the movable base are provided with an adjustment component, which includes a drive motor fixedly connected to the right side of the movable base.

[0008] Furthermore, the output end of the drive motor is fixedly connected to a drive gear, which is rotatably connected to the inside right side of the movable seat. A rotating cylinder is rotatably connected inside the movable seat, and the rotating cylinder passes through the left and right sides of the movable seat. The right side of the outer surface of the rotating cylinder is fixedly connected with teeth in a circular array, and multiple teeth mesh with the drive gear.

[0009] Furthermore, a plurality of second electric push rods are fixedly connected to the inner sidewall of the rotating drum. A pressing block is fixedly connected to the telescopic end of the second electric push rod. The pressing block is arc-shaped, and anti-slip texture is provided on the side of the pressing block away from the second electric push rod.

[0010] Furthermore, a cooling assembly is provided on the right side of the upper protrusion of the machine body, the cooling assembly including a fixed column fixedly connected to the right side of the upper protrusion of the machine body.

[0011] Furthermore, a support plate is fixedly connected to the right end of the fixed column, and atomizing nozzles are fixedly connected to the right side of the support plate in a circular array. A conduit is fixedly connected to the back side of the left end of the support plate, and the left end of the conduit is connected to an external liquid supply device. Two rubber rings are fixedly connected to the outer side of the support plate. The support plate and the rotating cylinder are on the same horizontal line, and the diameter of the support plate is smaller than the diameter of the inner cavity of the rotating cylinder.

[0012] Furthermore, a measuring component is provided on both the inner and outer sides of the machine body, and the measuring component includes a second sliding groove opened on the upper side of the inner side of the machine body.

[0013] Furthermore, a second slider is fixedly connected to the lower side of the movable seat. The second slider is slidably connected inside the second slide groove. Multiple rollers are tumbledly connected to the lower side of the second slider. The outer surface of the rollers rolls in contact with the lower inner side of the second slide groove. A cylinder is fixedly connected to the left side of the inner side of the machine body. The telescopic end of the cylinder is fixedly connected to the left side of the second slider.

[0014] Furthermore, a fixed frame is fixedly connected to the upper side of the machine body, and a guide groove is opened on the front side of the fixed frame. A bracket is fixedly connected to the back side of the outer surface of the fixed cylinder. The bracket is U-shaped, and the back side of the bracket is slidably connected to the inside of the guide groove. A retaining ring is fixedly connected to the left side of the front end of the bracket. The retaining ring is C-shaped, and notches are opened through the upper and lower sides of the outer surface of the retaining ring. A scale strip is fixedly connected to the upper side of the fixed frame. The retaining ring is located between the support plate and the rotating cylinder. After the retaining ring moves to the left, it is semi-enclosed and fitted on the outside of the support plate. The notch allows the blade of the first cutting piece and the second cutting piece to enter.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The present invention adjusts the position of the first cutting piece and the second cutting piece by setting the movable frame under the push of the first electric push rod. Since the metal-clad tube will peel off the cladding layer first during the cutting process, the laser will not directly irradiate the adhesive layer and the metal mesh layer, and prevent thermal degradation and interlayer shear stress, thereby realizing the layered cutting of "mechanical cutting of cladding first and laser cutting of substrate" and suppressing the heat-affected zone from damaging the intermediate adhesive layer.

[0016] (2) The present invention clamps the metal-coated tube by setting the extrusion block and adjusts the position of the extrusion block by the second electric push rod. After the drive motor runs, it will drive the metal-coated tube to rotate. For different tube diameters, the controller adjusts the synchronous extension of multiple second electric push rods according to the pre-input outer diameter parameters of the metal-coated tube, so that all extrusion blocks are synchronously pressed against the outer wall of the tube, forming a centering clamp with equal tension, so that metal-coated tubes of different specifications can be stably clamped in the absolute center of the inner cavity of the rotating drum, ensuring the coaxiality of subsequent blade cutting and laser irradiation.

[0017] (3) The present invention supports the inner wall of the metal-coated tube by setting a support plate, and at the same time the atomized spray from the nozzle cools the cut of the metal-coated tube. Since the cooling process starts immediately after the cutting is completed, the temperature of the cut is quickly reduced to below the upper limit of the temperature resistance of the adhesive layer, preventing the expansion of the heat-affected zone and the resulting interlayer debonding. At the same time, the support plate supports the inner wall on the left side of the cut of the coated tube to avoid deformation of the coated tube during cutting. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the movable base of the present invention; Figure 4 This is a cross-sectional view of the movable base of the present invention; Figure 5 This is a cross-sectional view of the rotating cylinder of the present invention; Figure 6 This is a schematic diagram of the structure of the fixed cylinder of the present invention; Figure 7 This is a cross-sectional view of the fixed cylinder of the present invention; Figure 8 This is a schematic diagram of the support disk of the present invention.

[0019] Explanation of the labels in the diagram: 1. Machine body; 11. Movable seat; 2. Cutting component; 21. Fixed cylinder; 22. First slide groove; 23. First slider; 24. Movable frame; 25. First electric push rod; 26. First cutting piece; 27. Second cutting piece; 3. Adjustment component; 31. Drive motor; 32. Drive gear; 33. Rotary drum; 34. Tooth; 35. Second electric push rod; 36. Extrusion block; 4. Cooling component; 41. Fixed column; 42. Support plate; 43. Atomizing nozzle; 44. Guide tube; 45. Rubber ring; 5. Measuring component; 51. Second slide groove; 52. Second slider; 53. Roller; 54. Cylinder; 55. Fixed frame; 56. Guide groove; 57. Support; 58. Snap ring; 59. Notch; 6. Scale bar. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1 to 8 A cutting device for producing metal-clad tubes includes a body 1 and a movable seat 11 disposed on the lower side inside the body 1. The upper inner side of the movable seat 11 is provided with a cutting component 2, which includes a fixed cylinder 21 fixedly connected to the left side of the body 1. The front and rear sides of the left end of the fixed cylinder 21 are provided with first sliding grooves 22. The first sliding grooves 22 are slidably connected to the inside of the first sliding grooves 22. The left sides of the two first sliding grooves 23 are fixedly connected to the movable frame 24. The lower side of the inside of the first sliding grooves 22 is fixedly connected to the first electric push rod 25. The telescopic end of the first electric push rod 25 is fixedly connected to the lower side of the first sliding groove 23. The upper side of the left end of the movable frame 24 is fixedly connected to the first cutting piece 26. The lower side of the left end of the movable frame 24 is fixedly connected to the second cutting piece 27.

[0022] The fixed cylinder 21 runs through the tube from left to right. The first cutting component 26 is a blade-type cutting machine used to peel off the outer coating of the tube. The second cutting component 27 is a laser cutting machine used to cut the inner substrate of the tube. Both the first cutting component 26 and the second cutting component 27 are equipped with laser rangefinders on the side facing the tube to be cut. The laser rangefinders are electrically connected to an external controller to provide real-time distance measurement data feedback to the first electric push rod 25 in order to control the alternating feed depth of the blade-type cutting machine and the laser cutting machine.

[0023] A cooling component 4 is provided on the right side of the protruding part at the upper end of the body 1.

[0024] By adopting the above technical solution, during operation, the metal-clad tube to be cut is inserted from the right end of the fixed cylinder 21 and supported by the cooling component 4. When a two-step cut is required—first cutting the outer cladding layer and then cutting the base—the first electric push rod 25 is driven to retract, causing the first slider 23 to slide downwards along the first groove 22. This causes the moving frame 24 and its first and second cutting components 26 and 27 to move downwards synchronously. During this process, the laser rangefinders on the surfaces of the first and second cutting components 26 and 27 continuously detect the position of the metal-clad tube and feed the data back to the controller configured inside the machine body 1. Subsequently, the controller controls the extension and retraction length of the first electric push rod 25, causing the first and second cutting components 26 and 27 to move closer together. After the metal-clad tube is cut, it is kept at a suitable distance. When the blade of the first cutting element 26 contacts the flame-retardant PVC / PE cladding layer on the outside of the tube, it will mechanically shear the cladding layer to complete the outer layer peeling. Then the first electric push rod 25 extends and the first slider 23 slides up along the first slide groove 22, driving the second cutting element 27 to move up synchronously. The nozzle of the second cutting element 27 faces upward and performs low-power laser cutting on the inner pressure-bearing tube with the cladding layer removed. Since the cladding layer is peeled off first during the cutting process, the laser avoids direct irradiation of the adhesive layer and metal mesh layer, preventing thermal degradation and interlayer shear stress. This achieves layered cutting of "mechanically cutting the cladding first and then laser cutting the substrate" and suppresses the damage of the heat-affected zone to the intermediate adhesive layer.

[0025] like Figure 4 and Figure 5As shown, the inner and outer sides of the movable base 11 are provided with an adjustment component 3, which includes a drive motor 31 fixedly connected to the right side of the movable base 11.

[0026] The output end of the drive motor 31 is fixedly connected to the drive gear 32, which is rotatably connected to the inside right side of the movable seat 11. The inside of the movable seat 11 is rotatably connected to the rotating cylinder 33, which runs through the left and right sides of the movable seat 11. The right side of the outer surface of the rotating cylinder 33 is fixedly connected with teeth 34 in a ring array, and multiple teeth 34 mesh with the drive gear 32.

[0027] Multiple second electric push rods 35 are fixedly connected to the inner side wall of the rotating drum 33. An extrusion block 36 is fixedly connected to the telescopic end of the second electric push rod 35. The extrusion block 36 is arc-shaped, and anti-slip texture is provided on the side of the extrusion block 36 away from the second electric push rod 35.

[0028] By adopting the above technical solution, during operation, the clamping force and inner cavity need to be adaptively adjusted according to the diameter of the metal-coated tube to be cut. The drive motor 31 is then started, and its output drives the drive gear 32 to rotate. The drive gear 32 meshes with the teeth 34 arranged in a ring array on the right side of the outer surface of the rotating drum 33, thereby driving the rotating drum 33 to rotate inside the moving base 11. The rotating drum 33 passes through both sides of the moving base 11, and its inner wall is fixedly connected to multiple second electric push rods 35. The telescopic ends of the second electric push rods 35 are connected to arc-shaped extrusion blocks 36. The extrusion blocks 36 have anti-slip textures on the side away from the second electric push rods 35. In actual production, the outer circumference of the right end of the rotating drum 33 is electrically connected to an external control power supply through a conductive slip ring, used to... When the rotating drum 33 rotates circumferentially, it provides an uninterrupted power signal to the second electric push rod 35 inside. The second electric push rod 35 receives the control signal and extends and retracts to drive the extrusion block 36 to move in a concentric or divergent manner along the radial guide rail opened on the inner wall of the rotating drum 33. The arc-shaped surface of the extrusion block 36 fits against the inner wall of the tube, and the anti-slip texture increases the friction force, realizing radial adaptive clamping of tubes with different diameters. For different tube diameters, the controller uniformly adjusts the synchronous extension of multiple second electric push rods 35 according to the pre-input outer diameter parameters of the metal-clad tube, so that all extrusion blocks 36 synchronously fit against the outer wall of the tube, forming a centering clamp with equal tension. This ensures that metal-clad tubes of different specifications can be stably clamped at the absolute center of the inner cavity of the rotating drum 33, ensuring the coaxiality of subsequent blade cutting and laser irradiation.

[0029] like Figure 1 , Figure 2 and Figure 8 As shown, the cooling assembly 4 includes a fixing post 41 fixedly connected to the right side of the protrusion at the upper end of the body 1.

[0030] A support plate 42 is fixedly connected to the right end of the fixed column 41. Atomizing nozzles 43 are fixedly connected to the right side of the support plate 42 in a circular array. A conduit 44 is fixedly connected to the back side of the left end of the support plate 42. The left end of the conduit 44 is connected to an external liquid supply device. Two rubber rings 45 are fixedly connected to the outside of the support plate 42. The support plate 42 and the rotating cylinder 33 are on the same horizontal line. The diameter of the support plate 42 is smaller than the diameter of the inner cavity of the rotating cylinder 33.

[0031] By adopting the above technical solution, during operation, when the cutting component 2 cuts the covered tube, the cutting area generates high temperature due to mechanical friction and laser thermal effect. At this time, the external liquid supply device delivers coolant to the inside of the support plate 42 through the conduit 44. The coolant is sprayed outward through the atomizing nozzles 43 arranged in a ring array on the right side of the support plate 42, forming a ring-shaped cooling spray to quickly cool the cut surface of the tube and the surrounding area. At the same time, the rotating drum 33 moves to the left under the drive of the adjusting component 3, and is fitted onto the outside of the support plate 42. On the other side, because the diameter of the support plate 42 is smaller than the diameter of the inner cavity of the rotating cylinder 33, the rotating cylinder 33 can completely enclose the support plate 42. The two rubber rings 45 fixed on the outside of the support plate 42 are tightly fitted to the inner wall of the metal-coated tube, which plays the role of internal expansion and support. Since the cooling process is started immediately after the cutting is completed, the cutting temperature is quickly reduced to below the upper limit of the temperature resistance of the adhesive layer, preventing the expansion of the heat-affected zone and the resulting interlayer debonding. At the same time, the support plate 42 supports the inner wall on the left side of the cut of the coated tube to avoid deformation of the coated tube during cutting.

[0032] like Figures 1 to 4 and Figure 6 and Figure 7 As shown, the inner and outer sides of the body 1 are provided with a measuring component 5, and the measuring component 5 includes a second slide groove 51 opened on the upper side of the inner side of the body 1.

[0033] A second slider 52 is fixedly connected to the lower side of the movable seat 11. The second slider 52 is slidably connected to the inside of the second slide groove 51. Multiple rollers 53 are slidably connected to the lower side of the second slider 52. The outer surface of the rollers 53 is in rolling contact with the lower inside of the second slide groove 51. A cylinder 54 is fixedly connected to the left side inside the machine body 1. The telescopic end of the cylinder 54 is fixedly connected to the left side of the second slider 52.

[0034] A fixed bracket 55 is fixedly connected to the upper side of the body 1. A guide groove 56 is opened on the front side of the fixed bracket 55. A bracket 57 is fixedly connected to the back side of the outer surface of the fixed cylinder 21. The bracket 57 is U-shaped. The back side of the bracket 57 is slidably connected to the inside of the guide groove 56. A retaining ring 58 is fixedly connected to the left side of the front end of the bracket 57. The retaining ring 58 is C-shaped. Notches 59 are opened through the upper and lower sides of the outer surface of the retaining ring 58. A scale strip 6 is fixedly connected to the upper side of the fixed bracket 55. The retaining ring 58 is located between the support plate 42 and the rotating cylinder 33. After the retaining ring 58 moves to the left, it is semi-enclosed and fitted on the outside of the support plate 42. The notch 59 allows the blade of the first cutting piece 26 and the second cutting piece 27 to enter.

[0035] By adopting the above technical solution, during operation, to control the cutting length, the cylinder 54 is activated. The telescopic end of the cylinder 54 pushes the second slider 52 to slide along the second slide groove 51 opened on the upper side of the machine body 1. Multiple rollers 53 are rolled along the lower side of the second slider 52, allowing rolling friction to replace sliding friction during the sliding process, improving the stability of movement. Therefore, the moving seat 11 moves synchronously with the second slider 52 along the direction of the second slide groove 51, driving the rotating drum 33 and the metal-clad tube clamped inside to move left or right. During the displacement process, the scale strip 6 fixed on the upper side of the fixed frame 55 provides the operator with a real-time length reference. The bracket 57 is U-shaped, and its back side is slidably connected to the guide groove 56 on the front side of the fixed frame 55, serving as a guide and limiting element to prevent the moving seat 11 from deflecting during movement. The retaining ring 58 fixed on the left side of the front end of the bracket 57 is in the shape of a "C". The retaining ring 58 has notches 59 on both the upper and lower sides of its outer surface. When the retaining ring 58 moves to the left, it can be semi-enclosed and fitted on the outside of the support plate 42. The notches 59 allow the blade of the first cutting component 26 and the laser nozzle of the second cutting component 27 to enter the cutting area normally without interference from the retaining ring 58, so as to realize the coordinated work of cutting and measurement positioning, ensure that the cutting length is consistent each time, and meet the production accuracy requirements.

[0036] Working principle: In use, the metal-clad tube is inserted from the right end of the fixed cylinder 21. The cooling component 4 provides support and spray cooling for the cut part of the tube. The adjustment component 3 is activated, and the drive motor 31 drives the rotating cylinder 33 to rotate through the meshing of the drive gear 32 and the teeth 34. The second electric push rod 35 pushes the extrusion block 36 to extend radially, realizing adaptive clamping for different tube diameters. According to the set cutting length, the cylinder 54 pushes the second slider 52 to move along the second slide groove 51. The moving seat 11 drives the rotating cylinder 33 and the tube to move synchronously. The scale bar 6 and the retaining ring 58 on the fixed frame 55... The system works in tandem to achieve length positioning. During cutting, the control system drives the first electric push rod 25 to retract based on the feedback data from the laser rangefinder, causing the moving frame 24 to move down to the preset peeling depth. The blade of the first cutting component 26 first physically peels off the flame-retardant outer coating in a circular motion. After the outer layer residue is cleaned, the first electric push rod 25 extends, resets, and is adjusted to the working height of the laser focusing point. The second cutting component 27 then activates a low-power beam to cut the inner pressure-bearing tube, achieving layered cutting of "first mechanical cold-cut coating, then laser hot-cut substrate," which minimizes thermodynamic damage to the greatest extent.

[0037] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A cutting device for producing metal-clad tubes, comprising a body (1) and a movable seat (11) disposed on the lower side inside the body (1), characterized in that: The upper inner side of the movable seat (11) is provided with a cutting component (2), which includes a fixed cylinder (21) fixedly connected to the left side of the body (1). The fixed cylinder (21) has a first sliding groove (22) on both the front and rear sides of its left end. A first slider (23) is slidably connected inside the first sliding groove (22). A movable frame (24) is fixedly connected to the left side of the two first sliders (23). A first electric push rod (25) is fixedly connected to the lower side inside the first sliding groove (22). The telescopic end of the first electric push rod (25) is fixedly connected to the lower side of the first slider (23). A first cutting piece (26) is fixedly connected to the upper side of the left end of the movable frame (24). A second cutting piece (27) is fixedly connected to the lower side of the left end of the movable frame (24). The fixed cylinder (21) runs through the tube from left to right. The first cutting component (26) is a blade-type cutting machine used to peel off the outer coating of the tube body. The second cutting component (27) is a laser cutting machine used to cut the inner substrate of the tube body. Both the first cutting component (26) and the second cutting component (27) are equipped with laser rangefinders on the side facing the tube body to be cut. The laser rangefinders are electrically connected to an external controller to provide real-time distance measurement data feedback to the first electric push rod (25) in order to control the alternating feed depth of the blade-type cutting machine and the laser cutting machine.

2. The cutting device for producing metal-clad tubes according to claim 1, characterized in that: The movable base (11) is provided with an adjustment component (3) on both the inner and outer sides. The adjustment component (3) includes a drive motor (31) fixedly connected to the right side of the movable base (11).

3. The cutting device for producing metal-clad tubes according to claim 2, characterized in that: The output end of the drive motor (31) is fixedly connected to the drive gear (32), which is rotatably connected to the inside right side of the movable seat (11). The inside of the movable seat (11) is rotatably connected to the rotating cylinder (33), which passes through the left and right sides of the movable seat (11). The right side of the outer surface of the rotating cylinder (33) is fixedly connected with teeth (34) in a ring array, and multiple teeth (34) mesh with the drive gear (32).

4. The cutting device for producing metal-clad tubes according to claim 3, characterized in that: Multiple second electric push rods (35) are fixedly connected to the inner side wall of the rotating drum (33). The telescopic end of the second electric push rod (35) is fixedly connected to a pressing block (36). The pressing block (36) is arc-shaped, and anti-slip texture is provided on the side of the pressing block (36) away from the second electric push rod (35).

5. The cutting device for producing metal-clad tubes according to claim 4, characterized in that: A cooling assembly (4) is provided on the right side of the upper protrusion of the body (1). The cooling assembly (4) includes a fixing column (41) fixedly connected to the right side of the upper protrusion of the body (1).

6. The cutting device for producing metal-clad tubes according to claim 5, characterized in that: The right end of the fixed column (41) is fixedly connected to a support plate (42). The right side of the support plate (42) is fixedly connected to an atomizing nozzle (43) arranged in a ring array. The back side of the left end of the support plate (42) is fixedly connected to a conduit (44). The left end of the conduit (44) is connected to an external liquid supply device. Two rubber rings (45) are fixedly connected to the outside of the support plate (42). The support plate (42) and the rotating cylinder (33) are on the same horizontal line. The diameter of the support plate (42) is smaller than the diameter of the inner cavity of the rotating cylinder (33).

7. The cutting device for producing metal-clad tubes according to claim 6, characterized in that: The inner and outer sides of the body (1) are provided with a measuring component (5), and the measuring component (5) includes a second slide groove (51) opened on the upper side inside the body (1).

8. A cutting device for producing metal-clad tubes according to claim 7, characterized in that: The lower side of the movable seat (11) is fixedly connected to a second slider (52), which is slidably connected to the inside of the second slide groove (51). The lower side of the second slider (52) is rolledly connected to a plurality of rollers (53), the outer surface of the rollers (53) is in rolling contact with the lower side of the inside of the second slide groove (51), and the left side of the inside of the machine body (1) is fixedly connected to a cylinder (54), the telescopic end of the cylinder (54) is fixedly connected to the left side of the second slider (52).

9. A cutting device for producing metal-clad tubes according to claim 8, characterized in that: A fixed frame (55) is fixedly connected to the upper side of the body (1). A guide groove (56) is opened on the front side of the fixed frame (55). A bracket (57) is fixedly connected to the back side of the outer surface of the fixed cylinder (21). The bracket (57) is U-shaped. The back side of the bracket (57) is slidably connected to the inside of the guide groove (56). A retaining ring (58) is fixedly connected to the left side of the front end of the bracket (57). The retaining ring (58) is C-shaped. Notches (59) are opened through the upper and lower sides of the outer surface of the retaining ring (58). A scale strip (6) is fixedly connected to the upper side of the fixed frame (55). The retaining ring (58) is located between the support plate (42) and the rotating cylinder (33). After the retaining ring (58) moves to the left, it is semi-enclosed and sleeved on the outside of the support plate (42). The notch (59) allows the blade of the first cutting piece (26) and the second cutting piece (27) to enter.

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