Manufacturing apparatus for seamless pipe production

Abstract

The present application relates to the technical field of extruders, and discloses a manufacturing device for seamless pipe production, which comprises an extrusion cylinder, a die head discharge pipe arranged at the discharge end of the extrusion cylinder, a needle arranged at the other end of the extrusion cylinder, an extrusion rod arranged outside the needle, a plurality of support assemblies arranged inside the die head discharge pipe and around the lower part of the die head discharge pipe, and a vibration-proof mechanism arranged on the support assembly away from the extrusion cylinder, wherein the support assembly comprises a supporting roller and a fixing mechanism, the supporting roller is in contact with the seamless pipe, and the fixing mechanism is arranged on the die head discharge pipe; the vibration-proof mechanism comprises a fixing shell and a damper, the fixing shell is arranged on one side of the fixing mechanism away from the extrusion cylinder, and the damper is arranged in the fixing shell. The present application can improve the extrusion quality of the seamless pipe and facilitate the subsequent processing and use.

Description

Technical Field

[0001] This invention relates to the field of extruder technology, and more particularly to a manufacturing apparatus for producing seamless tubes. Background Technology

[0002] Seamless tube extrusion molding is a key process in metal tube production, and the straightness of the finished product directly affects subsequent processing and performance. Seamless tubes are widely used in petrochemical, boiler manufacturing, and automotive industries, where strict requirements are placed on the dimensional accuracy and geometry of the tubes. Existing extrusion equipment commonly faces the problem of wavy or arc-shaped distortion in the production of aluminum alloy seamless tubes, which seriously affects product quality and subsequent processing efficiency.

[0003] Existing seamless tube extruders include an extrusion cylinder 1, a die head discharge pipe 2, an extrusion rod 3, a needle 4, and a driver 7. The driver 7 is located at one end, and its output end is connected to the extrusion rod 3 and the needle 4. The driver 7 can drive the extrusion rod 3 and the needle 4 to move individually or synchronously. The extrusion cylinder 1 is located on the side of the extrusion rod 3 away from the driver 7, and the die head discharge pipe 2 is located on the side of the extrusion cylinder 1 away from the extrusion rod 3. The extrusion cylinder 1 is used to hold the seamless tube blank, and the die head discharge pipe 2 is used to restrict the direction during seamless tube extrusion, facilitating subsequent gripping by traction claws. The extrusion rod 3 and the needle 4 are used to punch and extrude the seamless tube blank. Driven by the driver 7, the extrusion cylinder 1... The seamless tube blank is extruded from the die head discharge pipe 2. During use, an inner mold is placed at the front end of the seamless tube blank. The seamless tube blank and the inner mold are placed together into the extrusion cylinder 1. The driver 7 is started so that the extrusion rod 3 and the needle 4 are aligned and moved to one side of the extrusion cylinder 1 until the extrusion rod 3 and the needle 4 are close to the seamless tube blank. At this time, an outer mold is placed between the seamless tube blank and the extrusion rod 3 and the needle 4. The extrusion rod 3 and the needle 4 press the seamless tube blank together. The needle 4 moves towards the die head discharge pipe 2 to punch holes in the seamless tube blank and push out the excess material. After the needle 4 is pushed out to the position, the needle 4 remains stationary. The extrusion rod 3 moves towards the die head discharge pipe 2 to extrude the seamless tube.

[0004] During extrusion, the seamless tube is in a high-temperature softened state, making it soft and prone to natural sagging due to gravity. The yield strength of the tube in the high-temperature section is significantly reduced, and plastic deformation can occur even with relatively small external forces. To maintain continuous tube transport, the equipment uses traction claws to grip and pull the hardened section; however, these claws generate mechanical vibrations during movement. This vibration is transmitted through the hardened section of the tube to the area still in a soft state after extrusion. Because the tube in this area has not fully cooled and solidified, internal stress accumulation and localized deformation are easily generated under vibration. When the deformation exceeds the material's elastic limit, it forms irreversible wavy or arc-shaped tortuous defects. These defects are often difficult to completely eliminate in subsequent straightening processes, directly affecting the straightness of the tube and the quality of the finished product.

[0005] Therefore, how to provide a manufacturing apparatus for seamless tube production is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] One object of the present invention is to provide a manufacturing apparatus for seamless tube production. The invention includes an extrusion cylinder, with a die head discharge pipe at the discharge end of the extrusion cylinder and a needle at the other end. An extrusion rod is disposed outside the needle. Multiple sets of support assemblies are disposed below the die head discharge pipe, penetrating the interior of the die head discharge pipe. The length of the die head discharge pipe is consistent with the cooling and shaping length of the seamless tube after extrusion. The multiple sets of support assemblies are installed around the lower part of the die head discharge pipe, and the support assemblies are used to support the seamless tube away from the extrusion cylinder. The support assembly at one end of the extrusion cylinder is a shaping support component, and the remaining support components are load-bearing support components. The shaping support component is equipped with a vibration damping mechanism, which is used to suppress the vibration of the seamless tube during cooling and shaping. The support assembly includes a support roller and a fixing mechanism. The support roller contacts the seamless tube, and the fixing mechanism is installed on the discharge pipe of the die head. The vibration damping mechanism includes a fixed housing and a damper. The fixed housing is installed on the side of the fixing mechanism away from the extrusion cylinder, and the damper is installed inside the fixed housing.

[0007] Preferably, the surface of the discharge pipe of the die head is provided with multiple sets of cooling air holes, which are arranged in two groups at the upper and lower ends of the discharge pipe of the die head, and the multiple sets of cooling air holes at the upper end are staggered with the multiple sets of cooling air holes at the lower end. The cooling air holes are used to connect the inside and outside air. The cooling air duct is located inside the discharge pipe of the die head and has a spiral structure. The cooling air duct is arranged to avoid the multiple sets of cooling air holes. A fan is provided on one side of the discharge pipe of the die head, and the air outlet of the fan is intersected with the multiple sets of cooling air holes at the upper end.

[0008] Preferably, the surface of the discharge pipe of the machine head is further provided with multiple sets of insertion slots and multiple sets of fixing slots. The insertion slots are arranged to avoid the cooling air holes and cooling air ducts, and the fixing slots are arranged to avoid the cooling air holes and cooling air ducts. The spacing between the fixing slots and the insertion slots is the same.

[0009] Preferably, the fixing mechanism includes an angle-adjustable mounting plate, which is connected to a support roller pin. The support roller rotates along the pin. Two sets of bolts are mounted on the angle-adjustable mounting plate. A central fixing plate is provided on the side of the angle-adjustable mounting plate away from the support roller. An arc-shaped groove and a first through hole are formed on the surface of the central fixing plate. The arc-shaped groove is used to mate with one set of bolts on the angle-adjustable mounting plate, and the first through hole of the central fixing plate is used to mate with the other set of bolts.

[0010] Preferably, the center fixing plate of the load-bearing bracket is provided with a clamping plate at the end away from the supporting roller, and the fixing mechanism further includes a pressure block. The pressure block and the clamping plate are fixed and clamped to the wall of the discharge pipe of the machine head by bolts.

[0011] Preferably, the central fixing piece of the shaped support bracket has a clamping piece at the end away from the supporting roller, and the fixing mechanism of the shaped support bracket further includes a pressure block.

[0012] Preferably, the vibration damping mechanism is located outside the discharge pipe of the machine head. The fixed housing includes two sets of connecting ears, a fixed ear, and a receiving cavity. The two sets of connecting ears are arranged on both sides. The connecting ears have a C-shaped structure. The fixed ear is located in the middle of the two sets of connecting ears. The fixed ear has a tray structure. The fixed ear has a receiving cavity on the side near the discharge pipe of the machine head. The receiving cavity is used to place the damper.

[0013] Preferably, the damper has two sets of high-temperature rubber sheets and a damping sheet. The two sets of high-temperature rubber sheets are disposed at both ends inside the cavity of the container, and the thickness of the high-temperature rubber sheets is greater than the thickness of the inner wall of the cavity. The damping sheet is disposed between the two sets of high-temperature rubber sheets, and the thickness of the damping sheet is less than the inner thickness of the cavity.

[0014] Preferably, the clamping piece of the shaped support bracket is inserted into the receiving cavity, and the clamping piece of the shaped support bracket is connected to the lower end of the connecting ear by multiple sets of double-ended bolts. The double-ended bolts are threadedly engaged with the clamping piece of the shaped support bracket, and there is a gap between the double-ended bolts and the receiving cavity. A shock-absorbing spring is provided on the outside of the double-ended bolts.

[0015] The beneficial effects of this invention are: The extruder supports the unhardened section of the seamless tube with multiple sets of support components to prevent the seamless tube from falling downwards under gravity and forming waves or arcs; however, the existing die head discharge pipe is too short and the support length is insufficient, so the die head discharge pipe needs to be lengthened. Lengthening the die head discharge pipe will affect the cooling of the seamless tube. Therefore, by using a fan installed on the side of the die head discharge pipe in conjunction with cooling air holes and cooling air ducts, air is delivered to the upper cooling air holes. Through Bernoulli's principle, the air inside the die head discharge pipe is quickly drawn out, which can efficiently cool the extruded seamless pipe and reduce the length of the die head discharge pipe. However, when the high-speed transverse airflow sweeps over the edge of the top cooling air hole, it will form a "shear layer" with the rising hot airflow inside the pipe. If the wind speed is too high, it will produce a sharp whistling sound. This whistling sound will cause vibration. It has little impact on the hardened section of the seamless pipe, but the vibration of the hardened section of the seamless pipe will be transmitted forward and affect the unhardened section. Therefore, the vibration of the seamless tube is further weakened and buffered by the anti-vibration mechanism, which reduces the impact of equipment resonance on the die head discharge tube, reduces the impact of vibration caused by the traction claw and possible whistling vibration on the seamless tube forming, improves the extrusion quality of the seamless tube, and facilitates subsequent processing and use. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of a manufacturing apparatus for seamless tube production proposed in this invention; Figure 2 This is a schematic diagram of the structure of the discharge pipe of the machine head, the support assembly, and the vibration damping mechanism proposed in this invention.

[0017] Figure 3 This is a schematic diagram of the cooling vent, insert slot, and fixing slot proposed in this invention.

[0018] Figure 4 This is a schematic diagram of the support assembly of the load-bearing bracket proposed in this invention.

[0019] Figure 5 This is an exploded view of the support assembly of the load-bearing bracket proposed in this invention.

[0020] Figure 6 This is a schematic diagram of the support assembly and vibration damping mechanism of the fixed support bracket proposed in this invention.

[0021] Figure 7 This is an exploded view of the support assembly and vibration damping mechanism of the fixed support bracket proposed in this invention.

[0022] Figure 8 This is a cross-sectional schematic diagram of the support assembly and vibration damping mechanism of the fixed support bracket proposed in this invention.

[0023] In the diagram: 1. Extrusion cylinder; 2. Discharge pipe at the machine head; 21. Cooling air vent; 22. Cooling air duct; 23. Insertion slot; 24. Fixing slot; 3. Extrusion rod; 4. Needle; 5. Support assembly; 51. Support roller; 52. Fixing mechanism; 521. Angle-adjustable mounting plate; 522. Center fixing plate; 5221. Arc groove; 5222. Clamping plate; 523. Pressure block; 6. Vibration damping mechanism; 61. Fixed outer shell; 611. Connecting lug; 612. Fixing lug; 613. Receiving cavity; 614. Double-ended bolt; 615. Shock-absorbing spring; 62. Damper; 621. High-temperature rubber sheet; 622. Damping sheet; 7. Driver. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0025] Examples of the present invention are provided below. Figure 1-3 Multiple sets of cooling air holes 21 are provided on the surface of the discharge pipe 2 of the die head. These cooling air holes 21 are arranged in two groups at the upper and lower ends of the discharge pipe 2, respectively, with the upper and lower sets of cooling air holes 21 staggered. The cooling air holes 21 are used to connect internal and external air. When seamless tubes are extruded, their surface temperature is high, and the air rapidly heats up upon contact with the seamless tube surface and flows upward, exiting from the upper cooling air holes 21. Air lost from the inside of the discharge pipe 2 enters through the lower cooling air holes 21, thus forming air circulation. A cooling air duct 22 is located inside the discharge pipe 2 of the die head. 22 has a spiral structure. The cooling air duct 22 is set to avoid multiple sets of cooling air holes 21. A fan is provided on one side of the discharge pipe 2 of the machine head. The air outlet of the fan is set to intersect with the multiple sets of cooling air holes 21 at the upper end. When the air in the discharge pipe 2 of the machine head flows up and down, the airflow is guided by the cooling air duct 22 to move upward in the spiral direction of the cooling air duct 22. Multiple sets of insertion slots 23 and multiple sets of fixing slots 24 are also opened on the surface of the discharge pipe 2 of the machine head. The insertion slots 23 are set to avoid the cooling air holes 21 and the cooling air duct 22. The fixing slots 24 are set to avoid the cooling air holes 21 and the cooling air duct 22. The spacing between the fixing slots 24 and the insertion slots 23 is the same.

[0026] See Figure 2 Below the discharge pipe 2 of the die head, there are multiple sets of support components 5 that penetrate into the interior of the discharge pipe 2 of the die head. The length of the discharge pipe 2 of the die head is the same as the length of the seamless tube after extrusion and cooling and shaping. The multiple sets of support components 5 are installed around the bottom of the discharge pipe 2 of the die head. The support components 5 are used to support the seamless tube. The support component 5 at the end away from the extrusion cylinder 1 is a shaping support component, and the other support components 5 are weight support components. The shaping support component is equipped with a vibration damping mechanism 6. The vibration damping mechanism 6 is used to suppress the vibration of the seamless tube after cooling and shaping. See Figure 4-5The support assembly 5 includes a support roller 51 and a fixing mechanism 52. The support roller 51 contacts the seamless tube and can be designed to fit the shape of the seamless tube. The fixing mechanism 52 is mounted on the discharge pipe 2 of the machine head and includes an angle-adjustable mounting plate 521. The angle-adjustable mounting plate 521 is connected to the support roller 51 by a pin. The support roller 51 rotates along the pin. Two sets of bolts are mounted on the angle-adjustable mounting plate 521. A central fixing plate 522 is provided on the side of the angle-adjustable mounting plate 521 away from the support roller 51. An arc groove 5221 and a first through hole are opened on the surface of the central fixing plate 522. The arc groove 5221 is used to cooperate with one set of bolts of the angle-adjustable mounting plate 521, and the first through hole of the central fixing plate 522 is used to cooperate with the other set of bolts.

[0027] See Figure 4-5 The center fixing plate 522 of the load-bearing bracket has a clamping plate 5222 at the end away from the support roller 51. The fixing mechanism 52 also includes a pressure block 523. The pressure block 523 and the clamping plate 5222 are fixed and clamped to the wall of the discharge pipe 2 of the die head by bolts. When the seamless tube is first extruded, it is hot and soft and is prone to falling downwards under the influence of gravity. The pressure block 523 and the clamping plate 5222 are clamped and fixed by bolts so that the support roller 51 can support the part of the seamless tube that has just been extruded. Gravity is transmitted to the pressure block 523 through the support roller 51 and is effectively supported through the discharge pipe 2 of the die head. When it is necessary to adjust the position of the support component 5 of the load-bearing bracket, the bolts on the corresponding pressure block 523 and clamping plate 5222 are loosened, and the tube can be slidably adjusted in the fixing groove 24 and the insertion groove 23. After adjusting the position of the support component 5, the two sets of bolts on the angle-adjustable mounting plate 521 are loosened, and the angle-adjustable mounting plate 521 is rotated to adjust the contact between the support roller 51 and the seamless tube. When it is necessary to disassemble the support assembly 5, it can be removed directly by unscrewing the aforementioned bolts.

[0028] See Figure 6-8The center fixing piece 522 of the shaping bracket is provided with a clamping piece 5222 at one end away from the supporting roller 51. A first bolt groove is provided below the clamping piece 5222. The fixing mechanism 52 of the shaping bracket also includes a pressure block 523, and two sets of second bolt holes are provided on the pressure block 523. Compared with the central fixing plate 522 of the fixed support bracket, the central fixing plate 522 of the fixed support bracket is longer and is used to accommodate the vibration damping mechanism 6. The vibration damping mechanism 6 is located outside the discharge pipe 2 of the machine head. The fixed housing 61 includes two sets of connecting ears 611, fixing ears 612 and a receiving cavity 613. The two sets of connecting ears 611 are arranged on both sides. The lower end of the connecting ears 611 is provided with a third through hole. The connecting ears 611 have a C-shaped structure. The fixing ears 612 are located in the middle of the two sets of connecting ears 611. The fixing ears 612 have a tray structure. The fixing ears 612 have two sets of second through holes. Bolts are inserted into the second through holes and locked and fixed with the second bolt holes on the pressure block 523. Thus, the pressure block 523 and the fixing ears 612 clamp the discharge pipe 2 of the machine head to fix the vibration damping mechanism 6. The side of the fixing ears 612 near the discharge pipe 2 of the machine head has a receiving cavity 613, which is used to place the damper 62. The damper 62 has two sets of high-temperature rubber sheets 621 and damping sheets 622. The two sets of high-temperature rubber sheets 621 are located at both ends inside the cavity 613, and the thickness of the high-temperature rubber sheets 621 is greater than the thickness of the inner wall of the cavity 613. The damping sheet 622 is located between the two sets of high-temperature rubber sheets 621, and the thickness of the damping sheet 622 is less than the thickness of the inner wall of the cavity 613. The clamping piece 5222 of the shaped support component is inserted into the cavity 613. The first threaded groove of the clamping piece 5222 of the shaped support component is connected to the third through hole below the connecting ear 611 by inserting multiple sets of double-ended bolts 614. The double-ended bolts 614 are threadedly engaged with the clamping piece 5222 of the shaped support component. There is a gap between the double-ended bolts 614 and the cavity 613. A shock-absorbing spring 615 is provided on the outside of the double-ended bolts 614. The total elastic force of the multiple sets of shock-absorbing springs 615 is basically equal to the weight of the seamless tube in the support assembly 5 of the shaped support component.

[0029] See Figure 6-8When it is necessary to install the vibration damping mechanism 6 and the support assembly 5 of the fixed support bracket, first place the high-temperature rubber sheet 621 and the damping sheet 622 into the cavity 613, place the vibration damping mechanism 6 on the outside of the machine head discharge pipe 2 near the fixing groove 24, place the pressure block 523 inside the machine head discharge pipe 2, and pass the bolts through the second through hole of the fixing ear 612 and the fixing groove 24 in sequence, and thread them into the second bolt hole on the pressure block 523. Then, insert the center fixing piece 522 into the insertion groove 23 from the outside of the machine head discharge pipe 2, and at the same time, insert the clamping piece. The clamping piece 5222 is inserted into the connecting ear 611. The connecting ear 611 provides space for the clamping piece 5222 to move, and the insertion slot 23 also provides space for the central fixing piece 522 to swing back and forth, facilitating the insertion of the clamping piece 5222 into the connecting ear 611. A shock-absorbing spring 615 is placed between the connecting ear 611 and the clamping piece 5222 and fixed by inserting it with a double-ended bolt 614. Finally, the angle-adjustable mounting piece 521 and the support roller 51 are combined and inserted into the discharge pipe 2 of the machine head. After adjusting the position with the central fixing piece 522, it is fixed by bolts. Preferably, the support assembly 5 can be designed for lightweight structure. If the hardware strength is sufficient, the amount of material used can be reduced by decreasing the width of the central fixing piece 522. Alternatively, the arc of the arc groove 5221 can be made longer by reducing the width, so that 51 can obtain a larger rotation range.

[0030] Working principle: During the operation of this device, the driver 7 is started to feed the seamless tube blank and the outer mold, punching and extruding the seamless tube. When the seamless tube extends from one side of the extrusion cylinder 1 into the discharge pipe 2 of the die head, the high temperature of its surface causes the air to flow upward rapidly, moving along the direction of the cooling air channel 22 until it flows out from the upper cooling air hole 21, and bringing in more air from the lower cooling air hole 21, thus forming internal air circulation. At this time, the fan is turned on to send air to the upper cooling air hole. Through Bernoulli's principle, the air inside the discharge pipe of the die head is circulated. Air is rapidly drawn out, quickly reducing the temperature of the seamless tube during extrusion. After a section of the seamless tube is extruded, its lower surface contacts the support rollers 51, which support the tube, preventing it from deforming downwards under gravity. Multiple sets of support rollers 51 support the tube, preventing it from deforming under gravity inside the die head discharge pipe 2. After being cooled by airflow through the cooling vents 21 and ducts 22, the seamless tube gradually hardens. This airflow causes slight vibrations, which affect the hardened portion. The impact on the seamless tube itself is minimal, but the impact on the unhardened section at the front end is significant. More internal stress will accumulate inside the seamless tube, and vibration will also cause undulations. Furthermore, the vibration transmitted to the unhardened section of the seamless tube when it is gripped and pulled by the traction claw will also be transmitted. The support component 5 of the shaping support bracket supports the hardened seamless tube and transmits the vibration on the seamless tube to the damping spring 615. The total elastic force of the damping spring 615 is basically equal to the weight of the seamless tube at that point, so a small swing will occur to release and alleviate the vibration, thus reducing the vibration frequency. On the other hand, the extrusion equipment itself will also generate a certain frequency of resonance during operation. This resonance will be transmitted to the die head discharge pipe 2. At this time, the support component 5 installed on the die head discharge pipe 2 will also vibrate. The resonance can be reduced by the cooperation of the high-temperature rubber sheet 621 and the damping sheet 622. When the die head discharge pipe 2 vibrates, the damping sheet 622 moves in the opposite direction due to inertial force, and the high-temperature rubber sheet 621 pulls the damping sheet 622, which can quickly return to its original position, thus preparing for the next vibration.

[0031] The above description is only a preferred embodiment of the present invention, but 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 inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A manufacturing apparatus for seamless tube production, comprising an extrusion cylinder (1), wherein an organic head discharge pipe (2) is provided at the discharge end of the extrusion cylinder (1), and a needle (4) is provided at the other end of the extrusion cylinder (1), and an extrusion rod (3) is provided on the outside of the needle (4), characterized in that: Below the discharge pipe (2) of the die head, there are multiple sets of support components (5) that penetrate into the discharge pipe (2). The length of the discharge pipe (2) of the die head is the same as the length of the seamless tube after extrusion and cooling and shaping. The multiple sets of support components (5) are installed around the lower part of the discharge pipe (2). The support components (5) are used to support the seamless tube. The support component (5) at the end away from the extrusion cylinder (1) is a shaping support component, and the other support components (5) are weight-bearing support components. The shaping support component is equipped with a vibration damping mechanism (6). The vibration damping mechanism (6) is used to suppress the vibration of the cooled and shaped seamless tube. The support assembly (5) includes a support roller (51) and a fixing mechanism (52). The support roller (51) is in contact with the seamless tube, and the fixing mechanism (52) is mounted on the discharge pipe (2) of the machine head. The vibration damping mechanism (6) includes a fixed housing (61) and a damper (62). The fixed housing (61) is installed on the side of the fixed mechanism (52) away from the end of the extrusion cylinder (1), and the damper (62) is installed inside the fixed housing (61).

2. The manufacturing apparatus for seamless tube production according to claim 1, characterized in that, The surface of the discharge pipe (2) of the machine head is provided with multiple sets of cooling air holes (21). The multiple sets of cooling air holes (21) are arranged in two groups at the upper and lower ends of the discharge pipe (2), and the multiple sets of cooling air holes (21) at the upper end and the multiple sets of cooling air holes (21) at the lower end are staggered. The cooling air holes (21) are used to connect the inside and outside air. The discharge pipe (2) of the machine head is provided with a cooling air channel (22). The cooling air channel (22) is a spiral structure. The cooling air channel (22) is set away from the multiple sets of cooling air holes (21). A fan is provided on one side of the discharge pipe (2). The air outlet of the fan is intersected with the multiple sets of cooling air holes (21) at the upper end.

3. The manufacturing apparatus for seamless tube production according to claim 2, characterized in that, The surface of the discharge pipe (2) of the machine head is also provided with multiple sets of insertion slots (23) and multiple sets of fixing slots (24). The insertion slots (23) are set away from the cooling air holes (21) and cooling air channels (22), and the fixing slots (24) are set away from the cooling air holes (21) and cooling air channels (22). The spacing between the fixing slots (24) and the insertion slots (23) is the same.

4. The manufacturing apparatus for seamless tube production according to claim 1, characterized in that, The fixing mechanism (52) includes an angle-adjustable mounting plate (521), which is connected to the support roller (51) by a pin. The support roller (51) rotates along the pin. Two sets of bolts are mounted on the angle-adjustable mounting plate (521). A central fixing plate (522) is provided on the side of the angle-adjustable mounting plate (521) away from the support roller (51). An arc groove (5221) and a first through hole are provided on the surface of the central fixing plate (522). The arc groove (5221) is used to cooperate with one set of bolts of the angle-adjustable mounting plate (521), and the first through hole of the central fixing plate (522) is used to cooperate with the other set of bolts.

5. The manufacturing apparatus for seamless tube production according to claim 4, characterized in that, The center fixing piece (522) of the load-bearing bracket is provided with a clamping piece (5222) at one end away from the supporting roller (51). The fixing mechanism (52) also includes a pressure block (523). The pressure block (523) and the clamping piece (5222) are fixed and clamped to the wall of the discharge pipe (2) of the machine head by bolts.

6. The manufacturing apparatus for seamless tube production according to claim 4, characterized in that, The center fixing piece (522) of the fixed bracket is provided with a clamping piece (5222) at the end away from the supporting roller (51), and the fixing mechanism (52) of the fixed bracket also includes a pressure block (523).

7. The manufacturing apparatus for seamless tube production according to claim 6, characterized in that, The vibration damping mechanism (6) is located outside the discharge pipe (2) of the machine head. The fixed housing (61) includes two sets of connecting ears (611), a fixed ear (612), and a receiving cavity (613). The two sets of connecting ears (611) are arranged on both sides. The connecting ears (611) are C-shaped. The fixed ear (612) is located in the middle of the two sets of connecting ears (611). The fixed ear (612) is a tray structure. The fixed ear (612) has a receiving cavity (613) on the side near the discharge pipe (2) of the machine head. The receiving cavity (613) is used to place the damper (62).

8. The manufacturing apparatus for seamless tube production according to claim 7, characterized in that, The damper (62) has two sets of high-temperature rubber sheets (621) and a damping sheet (622). The two sets of high-temperature rubber sheets (621) are located at both ends inside the cavity (613), and the thickness of the high-temperature rubber sheets (621) is greater than the thickness of the inner wall of the cavity (613). The damping sheet (622) is located between the two sets of high-temperature rubber sheets (621), and the thickness of the damping sheet (622) is less than the thickness of the inner wall of the cavity (613).

9. A manufacturing apparatus for producing seamless tubes according to claim 8, characterized in that, The clip (5222) of the shaped support bracket is inserted into the cavity (613). The clip (5222) of the shaped support bracket is connected to the lower end of the connecting ear (611) by multiple sets of double-ended bolts (614). The double-ended bolts (614) are threadedly engaged with the clip (5222) of the shaped support bracket. There is a gap between the double-ended bolts (614) and the cavity (613). A shock-absorbing spring (615) is provided on the outside of the double-ended bolts (614).

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