Diameter expanding device for alloy pipe production

Abstract

The invention relates to the technical field of aluminum alloy pipe production and processing, and discloses an expanding device for alloy pipe production, which comprises a base, an expanding assembly for expanding an alloy pipe is arranged on the upper surface of the base, a fan is fixedly mounted on the upper surface of the base, and the output end of the fan is rotatably connected with a connecting pipe. An expanding ball is fixedly installed at the end, away from the draught fan, of the connecting pipe, and an air guide assembly for improving the heat dissipation efficiency between the alloy pipe and the expanding ball rotating at a high speed when the alloy pipe makes contact with the expanding ball is arranged in the expanding ball. The air guide assembly is arranged to be matched with a plurality of sets of fan-shaped guide grooves formed in the arc-shaped face of the spherical cover to blow out continuous relatively cold airflow to the attaching position between the diameter-expanding ball and the alloy pipe, so that the airflow can continuously take away heat of the attaching position between the diameter-expanding ball and the alloy pipe, and it is guaranteed that the temperature difference between the inside and outside of the diameter-expanding position of the alloy pipe is reduced; and the condition of cracking in the expanding operation process is avoided, and the machining quality of the alloy pipe is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum alloy tube production and processing, in particular to a diameter expanding device for alloy tube production. Background Art

[0002] The expanding machine is a straight seam metal welded pipe shaping equipment. It uses a conical expanding head to expand the steel pipe to eliminate the forming pressure and welding stress of the alloy pipe and ensure that the diameter of the alloy pipe is consistent throughout its entire length. The demand for various metal pipes in daily industrial production makes the corresponding expanding devices more common.

[0003] According to a publicly disclosed expansion device for nickel-based alloy tube production (Announcement No.: CN211758080U), in the above application, an air-cooling fan is provided and the air-cooling fan includes fan blades, a fixed base plate, a support rod and a fuselage. During use, the working position is determined by fixing the fixed base plate and the top end face of the motor. The bottom end face of the fuselage and the top end face of the motor are arranged in a fitting manner to ensure the overall stability of the air-cooling fan during operation. The arrangement of the fan blades plays a role in air cooling, which enhances the cooling speed of the equipment during use and the integrity of the expanded items.

[0004] However, during actual use of the above-mentioned equipment, the cooling of the working area of ​​the expanding ball is located on the outside of the cooling equipment, and during the processing of the expanding ball, the ball is in contact with the inner surface of the alloy tube, and the position with the highest temperature is on the inside of the alloy tube, which leads to a large temperature difference between the inside and outside of the alloy tube, which can easily cause cracks at the expanded position of the alloy tube, thereby reducing the service life and processing quality of the alloy tube; in view of this, we propose an expanding device for alloy tube production. Summary of the invention

[0005] The object of the present invention is to provide a diameter expanding device for alloy tube production to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a diameter expanding device for alloy tube production, comprising a base, an upper surface of the base is provided with an expanding component for expanding the alloy tube, a fan is fixedly installed on the upper surface of the base, the output end of the fan is rotatably connected with a connecting pipe, an expanding ball is fixedly installed at one end of the connecting pipe away from the fan, an air guide component is arranged inside the expanding ball to improve the heat dissipation efficiency between the alloy tube and the high-speed rotating expanding ball when the two are in contact, and an auxiliary heat dissipation component is arranged inside the expanding ball to improve the heat dissipation efficiency at the spherical surface of the expanding ball.

[0007] Preferably, the expansion assembly includes a stepper motor, the stepper motor is fixedly mounted on the upper surface of the base, a threaded rod is fixedly mounted on the output end of the stepper motor, a threaded slide is threadedly connected to the outer wall of the threaded rod, a hydraulic clamp is provided on the upper surface of the threaded slide, a servo motor is fixedly mounted on the upper surface of the base, a driving gear is fixedly mounted on the output end of the servo motor, and a driven gear is passed through and fixedly mounted on the connecting pipe.

[0008] Preferably, a T-shaped block is provided at the bottom of the threaded slide, and a T-shaped groove compatible with the above-mentioned T-shaped block is opened on the upper surface of the base, so that the threaded slide can only slide in the horizontal direction along the upper surface of the base, and the number of the hydraulic clamps is set to four groups, and the four groups of hydraulic clamps are arranged in a rectangular array on the top of the threaded slide, so that the four groups of hydraulic clamps are arranged in pairs on both sides to achieve the effect of clamping and fixing the alloy tube.

[0009] Preferably, the driving gear meshes with the driven gear to achieve transmission, and the ratio of the diameter of the driving gear to the diameter of the driven gear is 2:1, so that the rotation speed of the driven gear is twice that of the driving gear.

[0010] Preferably, the air guide assembly includes an air inlet duct, which is opened at the internal axis of the connecting pipe, and an annular groove is opened on a section of the inner wall of the air inlet duct inside the expanded diameter ball, a mounting ring is fixedly installed inside the annular groove, an inner surface of the mounting ring is fixedly connected to an inner ring through a thin rod, a connecting rod is passed through the inner surface of the inner ring, a straight groove is opened on the inner wall of the connecting rod, a square rod is slidably installed on the inner wall of the straight groove, a return spring is fixedly connected between the square rod and the inner wall of the end of the straight groove, a spherical cover is fixedly installed on the end of the connecting rod away from the fan, a guide groove is opened on the inner surface of the spherical cover on the side close to the expanded diameter ball, an auxiliary ring is arranged inside the air inlet duct, and a fan impeller is passed through and fixedly installed on the connecting rod.

[0011] Preferably, a receiving groove whose size matches that of the spherical cover is provided on the outer wall of the end of the expanded diameter ball away from the fan, and an inner ring groove whose diameter matches that of the square rod is provided on the arc-shaped inner surface of the inner ring, and the square rod is arranged in the inner ring groove, so that the connecting rod can move relative to each other in the horizontal direction. Due to the arrangement of the square rod and the inner ring groove, and the elastic force of the return spring, the connecting rod has a tendency to move toward one side of the fan.

[0012] Preferably, the number of the guide grooves is multiple, and the multiple guide grooves are evenly distributed in a circular array on the inner surface of the spherical cover, and the guide grooves are arranged in a fan shape with a narrow end close to the center of the spherical cover and a wide end away from the center of the spherical cover. The surface of one side of the spherical cover close to the expanded diameter ball is arranged in an arc shape, thereby increasing the influence range of the airflow blown out through the guide grooves, so that the movement direction of the airflow is closer to the fitting point between the expanded diameter ball and the alloy tube.

[0013] Preferably, the auxiliary heat dissipation assembly includes a conical cover, which is fixedly mounted on the end of the connecting rod away from the spherical cover, and the inner wall of the expanded ball is provided with an air guide cavity, and the inner wall of the expanded ball is provided with an annular heat exchange cavity, the conical cover is arranged in a cone shape, and the bottom diameter of the conical cover is arranged to be one third of the inner diameter of the air inlet duct, and the top of the conical cover faces the fan side to avoid excessive obstruction in the air inlet duct, the air guide cavity is arranged in an arc shape, and the number of the air guide cavities is set in two groups, and the two groups of air guide cavities are mirror-imaged and arranged on the upper and lower sides of the horizontal central axis of the expanded ball.

[0014] Preferably, a spoiler component for promoting the flow of heat transfer oil is arranged inside the annular heat exchange chamber, and the spoiler component includes a limiting ball, and the limiting ball is fixedly mounted on the arc-shaped inner surface of the annular heat exchange chamber. A spoiler ball and an auxiliary ball are arranged inside the annular heat exchange chamber, and a rectangular cavity is opened inside the spoiler ball, and a magnetic block is arranged inside the rectangular cavity. The magnetic properties of the spoiler ball and the magnetic blocks correspondingly arranged inside the auxiliary ball are opposite, so that the spoiler ball and the auxiliary ball can move in an approximately disordered manner within the activity range.

[0015] Preferably, the number of limiting balls is arranged in multiple groups, and each group of limiting balls is provided with two, the two limiting balls are correspondingly arranged on the upper and lower inner surfaces of the annular heat exchange chamber, and the multiple groups of limiting balls are evenly distributed in a circular array inside the annular heat exchange chamber to form multiple active intervals inside the annular heat exchange chamber, and the spoiler balls and auxiliary balls are correspondingly arranged in the same active interval.

[0016] Compared with the prior art, the present invention provides a diameter expansion device for alloy tube production, which has the following

[0017] Beneficial effects:

[0018] 1. The expansion device for alloy tube production is provided with an air guide assembly. Due to the influence of the high-speed airflow blown into the air inlet on the impeller, the spherical cover will drive the connecting rod to move to the side close to the alloy tube to expose the storage groove and the air inlet, and cooperate with the multiple sets of fan-shaped guide grooves opened on the arc surface of the spherical cover to blow a continuous and relatively cold airflow to the joint between the expansion ball and the alloy tube. Since the expansion ball and the inner surface of the alloy tube undergo a certain deformation during the expansion operation, the airflow will continue to take away the heat at the joint between the expansion ball and the alloy tube, so as to ensure that the temperature difference between the inside and outside of the expansion part of the alloy tube is reduced, avoid cracking during the expansion operation, and ensure the processing quality of the alloy tube.

[0019] 2. The expansion device for alloy tube production is provided with an auxiliary heat dissipation component. When a high-speed airflow is blown into the air inlet, the airflow affects the spherical cover, causing the connecting rod to move away from the fan, and finally the conical cover moves to the end of the air guide cavity. At this time, affected by the conical cover, a part of the airflow will enter the interior of the air guide cavity, and finally return to the air inlet through the other end of the air guide cavity, and cooperate with the heat transfer oil as the heat exchange medium between the expansion ball and the air guide cavity to keep the temperature on the spherical surface of the expansion ball in a relatively balanced state, while ensuring the overall heat dissipation effect of the expansion ball.

[0020] 3. The diameter expanding device for alloy tube production is provided with a spoiler assembly. During the rotation of the diameter expanding ball, the spoiler ball and the auxiliary ball can move in an approximately disorderly manner in the activity range due to the opposite magnetic properties of the magnetic blocks correspondingly arranged inside the spoiler ball and the auxiliary ball, thereby promoting the flow of heat transfer oil in the activity range to balance the temperature on the surface of the diameter expanding ball, thereby improving the overall heat dissipation effect of the diameter expanding ball. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the connecting pipe and the expansion ball of the present invention;

[0023] Figure 3 It is a cross-sectional view of the expansion ball and a partial explosion schematic view of the air guide assembly of the present invention;

[0024] Figure 4 This is an exploded schematic diagram of the mounting ring and the connecting rod of the present invention;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the diameter-expanding ball of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the spoiler ball and the auxiliary ball of the present invention.

[0027] In the figure: 1. base; 2. expansion assembly; 21. stepper motor; 22. threaded rod; 23. threaded slide; 24. hydraulic clamp; 25. servo motor; 26. driving gear; 27. fan; 28. connecting pipe; 29. ​​driven gear; 210. expansion ball; 3. air guide assembly; 31. air inlet; 32. annular groove; 33. mounting ring; 34. inner ring; 35. connecting rod; 36. straight groove; 37. square rod; 38. reset spring; 39. spherical cover; 310. guide groove; 311. auxiliary ring; 312. impeller; 4. auxiliary heat dissipation assembly; 41. conical cover; 42. air guide cavity; 43. annular heat exchange cavity; 5. spoiler assembly; 51. limiting ball; 52. spoiler ball; 53. auxiliary ball; 54. magnetic block. DETAILED DESCRIPTION

[0028] like Figure 1-Figure 6 As shown, the present invention provides a technical solution: a diameter expanding device for alloy tube production, comprising a base 1, an upper surface of the base 1 is provided with an expansion component 2 for expanding the alloy tube, the expansion component 2 includes a stepping motor 21, a threaded rod 22, a threaded slide 23, a hydraulic clamp 24, a servo motor 25, a driving gear 26, a fan 27, a connecting pipe 28, a driven gear 29 and an expansion ball 210.

[0029] In one embodiment of the present invention, a stepper motor 21 is fixedly mounted on the upper surface of a base 1, a threaded rod 22 is fixedly mounted on the output end of the stepper motor 21, a threaded slide 23 is threadedly connected to the outer wall of the threaded rod 22, a hydraulic clamp 24 is provided on the upper surface of the threaded slide 23, a servo motor 25 is fixedly mounted on the upper surface of the base 1, a driving gear 26 is fixedly mounted on the output end of the servo motor 25, a fan 27 is fixedly mounted on the upper surface of the base 1, a connecting pipe 28 is rotatably connected to the output end of the fan 27, a driven gear 29 is passed through and fixedly mounted on the connecting pipe 28, and an expanding ball 210 is fixedly mounted on the end of the connecting pipe 28 away from the fan 27.

[0030] Please refer to the instruction manual Figure 1-Figure 2In the embodiment of the present invention, a T-shaped block is provided at the bottom of the threaded slide 23, and a T-shaped slide groove matched with the T-shaped block is provided on the upper surface of the base 1, so that the threaded slide 23 can only slide in the horizontal direction along the upper surface of the base 1 to prevent the threaded slide 23 from rotating with the rotation of the threaded rod 22. Specifically, when the stepper motor 21 is started, the threaded rod 22 is driven to rotate, and the threaded slide 23 will move toward the side of the expanded ball 210 in the horizontal direction along the upper surface of the base 1. Furthermore, the number of hydraulic clamps 24 is set to four, and the four groups of hydraulic The pressing clamps 24 are arranged in a rectangular array on the top of the threaded slide 23, so that the four groups of hydraulic clamps 24 can clamp and fix the alloy tube on both sides in pairs, thereby ensuring the relative stability of the alloy tube during the diameter expansion process. At the same time, the axial lines of the alloy tube, the diameter expansion ball 210 and the connecting tube 28 positioned by the hydraulic clamps 24 are all arranged on the same horizontal line, so that when the threaded slide 23 drives the hydraulic clamps 24 and the alloy tube to move toward the side of the diameter expansion ball 210, the diameter expansion ball 210 can be accurately made to enter the end of the alloy tube, thereby realizing the diameter expansion operation of the alloy tube.

[0031] At the same time, the driving gear 26 meshes with the driven gear 29 to realize transmission. Specifically, the diameter ratio of the driving gear 26 to the driven gear 29 is 2:1, so that the rotation speed of the driven gear 29 is twice that of the driving gear 26, so as to ensure that the diameter expansion ball 210 can maintain a faster rotation speed as the connecting pipe 28 rotates, thereby completing the diameter expansion processing operation on the end of the alloy tube. Furthermore, a rotating structure is provided at the output end of the fan 27 to ensure that the end of the connecting pipe 28 can maintain rotation when connected to the rotating structure without affecting the sealing between the two, so that the fan 27 can continuously blow airflow toward the inside of the connecting pipe 28 when starting, thereby achieving the effect of heat dissipation. Specifically, two groups of vertical plates are provided on the upper surface of the base 1, and the connecting pipe 28 passes through the two groups of vertical plates and is rotatably connected to the two groups of vertical plates, thereby ensuring that the connecting pipe 28 and the base 1 are relatively horizontally arranged to realize the diameter expansion operation of the alloy tube.

[0032] Please refer to the instruction manual Figure 2-Figure 5 In an embodiment of the present invention, an air guide component 3 is provided inside the expanded diameter ball 210 to improve the heat dissipation efficiency between the alloy tube and the high-speed rotating expanded diameter ball 210 when the two are in contact. The air guide component 3 includes an air inlet duct 31, an annular groove 32, a mounting ring 33, an inner ring 34, a connecting rod 35, a straight groove 36, a square rod 37, a return spring 38, a spherical cover 39, a guide groove 310, an auxiliary ring 311 and a fan impeller 312.

[0033] Furthermore, the air inlet 31 is opened at the inner axis of the connecting pipe 28, and an annular groove 32 is opened on a section of the inner wall of the air inlet 31 inside the diameter-expanding ball 210, and a mounting ring 33 is fixedly installed inside the annular groove 32, and an inner ring 34 is fixedly connected to the arc-shaped inner surface of the mounting ring 33 through a thin rod, and a connecting rod 35 is passed through the arc-shaped inner surface of the inner ring 34, and a straight groove 36 is opened on the inner wall of the connecting rod 35, and a square rod 37 is slidably installed on the inner wall of the straight groove 36, and a return spring 38 is fixedly connected between the square rod 37 and the inner wall of the end of the straight groove 36, and a spherical cover 39 is fixedly installed on the end of the connecting rod 35 away from the fan 27, and a guide groove 310 is opened on the inner surface of the spherical cover 39 on the side close to the diameter-expanding ball 210, and an auxiliary ring 311 is arranged inside the air inlet 31, and a fan impeller 312 is passed through and fixedly installed on the connecting rod 35.

[0034] In addition, the air inlet 31 passes through the connecting pipe 28 and the enlarged ball 210, and a receiving groove whose size matches the spherical cover 39 is opened on the outer wall of the end of the enlarged ball 210 away from the fan 27, so that in the initial state, the spherical cover 39 will shrink into the interior of the spherical cover 39. At the same time, there are two groups of annular grooves 32, and the two groups of annular grooves 32 are symmetrically arranged on the left and right inner walls of the enlarged ball 210 with the vertical central axis of the enlarged ball 210 as the symmetry axis, and the two groups of annular grooves 32 are respectively adapted to the mounting ring 33 and the auxiliary ring 311. Specifically, the mounting ring 33 is arranged on the side close to the spherical cover 39, and the auxiliary ring 311 is arranged on the side close to the fan 27. Further, The interior of the auxiliary ring 311 is configured exactly the same as the mounting ring 33 to ensure the horizontal configuration and movement of the connecting rod 35 in the air inlet duct 31, thereby ensuring the operating stability of the connecting rod 35 and the spherical cover 39. At the same time, an inner ring groove with a diameter matching the length of the square rod 37 is provided on the arc-shaped inner surface of the inner ring 34, and the square rod 37 is arranged in the inner ring groove, so that the connecting rod 35 can move relative to each other in the horizontal direction. Due to the configuration of the square rod 37 and the inner ring groove, combined with the elastic force of the reset spring 38, the connecting rod 35 has a tendency to move toward the side of the fan 27, so that it can be reset under the elastic force of the reset spring 38 when the external airflow influence ends.

[0035] At the same time, the number of guide grooves 310 is set in multiple groups, and the multiple groups of guide grooves 310 are evenly distributed on the inner surface of the spherical cover 39 in a circular array, and the guide grooves 310 are arranged in a fan shape with a narrow end close to the center of the spherical cover 39 and a wide end away from the center of the spherical cover 39, thereby increasing the influence range of the airflow blown out through the guide grooves 310, so that the movement direction of the airflow is closer to the fitting between the expanded ball 210 and the alloy tube. Furthermore, the surface of one side of the spherical cover 39 close to the expanded ball 210 is arranged It is arranged in an arc shape, so that the airflow blown out from the air inlet duct 31 can be affected by the arc surface of the spherical cover 39 and diffused along the spherical surface of the expanded ball 210, thereby improving the heat dissipation effect of the joint between the expanded ball 210 and the alloy tube. In addition, when a continuous airflow is blown into the air inlet duct 31, the airflow fan wheel 312 is affected so that the fan wheel 312 drives the connecting rod 35 to rotate, thereby cooperating with the rotating guide groove 310 to improve the heat dissipation effect of the spherical surface of the expanded ball 210.

[0036] Please refer to the instruction manual Figure 3-Figure 5 In an embodiment of the present invention, an auxiliary heat dissipation component 4 for improving the heat dissipation efficiency at the spherical surface of the expanded ball 210 is arranged inside the expanded ball 210, and the auxiliary heat dissipation component 4 includes a conical cover 41, and the conical cover 41 is fixedly installed at the end of the connecting rod 35 away from the spherical cover 39. An air guide cavity 42 is opened on the inner wall of the expanded ball 210, and an annular heat exchange cavity 43 is opened on the inner wall of the expanded ball 210.

[0037] Specifically, the conical cover 41 is set in a conical shape, and the bottom diameter of the conical cover 41 is set to one third of the inner diameter of the air inlet duct 31. At the same time, the top of the conical cover 41 faces the side of the fan 27 to avoid excessive obstruction in the air inlet duct 31, affecting the size of the air flow blown out from the air inlet duct 31 through the fan impeller 312 and the side of the spherical cover 39, thereby affecting the overall heat dissipation effect of the expanded diameter ball 210. At the same time, the air guide cavity 42 is set in an arc shape, and the number of the air guide cavity 42 is set to two groups, and the two groups of air guide cavities 4 Mirror images are arranged on the upper and lower sides of the horizontal central axis of the enlarged diameter ball 210, so that when a high-speed airflow is blown into the air inlet duct 31, due to the influence of the airflow on the spherical cover 39, the connecting rod 35 will move to the side away from the fan 27, and finally the conical cover 41 will move to the end of the air guide cavity 42. At this time, under the influence of the conical cover 41, a part of the airflow will enter the interior of the air guide cavity 42, and finally return to the air inlet duct 31 through the other end of the air guide cavity 42 to take away the heat near the spherical surface of the enlarged diameter ball 210.

[0038] Furthermore, the interior of the annular heat exchange chamber 43 is filled with heat transfer oil, and the annular heat exchange chamber 43 and the air guide chamber 42 are arranged perpendicular to each other. By filling the annular heat exchange chamber 43 with heat transfer oil as a medium for heat exchange between the expanded ball 210 and the air guide chamber 42, the temperature on the spherical surface of the expanded ball 210 is kept in a relatively balanced state, while ensuring the overall heat dissipation effect of the expanded ball 210.

[0039] Please refer to the instruction manual Figure 5-Figure 6 In an embodiment of the present invention, a spoiler assembly 5 for promoting the flow of heat transfer oil is arranged inside the annular heat exchange chamber 43, and the spoiler assembly 5 includes a limiting ball 51, and the limiting ball 51 is fixedly mounted on the arc-shaped inner surface of the annular heat exchange chamber 43. A spoiler ball 52 and an auxiliary ball 53 are arranged inside the annular heat exchange chamber 43, and a rectangular cavity is opened inside the spoiler ball 52, and a magnetic block 54 is arranged inside the rectangular cavity.

[0040] It is worth noting that there are multiple groups of limiting balls 51, and each group of limiting balls 51 is provided with two, and the two limiting balls 51 are correspondingly arranged on the upper and lower inner surfaces of the annular heat exchange cavity 43, and the multiple groups of limiting balls 51 are evenly distributed in the annular heat exchange cavity 43 in a circular array to form multiple activity intervals inside the annular heat exchange cavity 43, and the spoiler ball 52 and the auxiliary ball 53 are correspondingly arranged in the same activity interval, so that as the diameter expansion ball 210 rotates, the spoiler ball 52 and the auxiliary ball 53 will approach each other and touch each other in the activity interval. Specifically, The diameters of the spoiler ball 52 and the auxiliary ball 53 are smaller than the inner diameter of the annular heat exchange chamber 43 to ensure the normal rolling of the spoiler ball 52 and the auxiliary ball 53. Furthermore, another set of rectangular cavities and magnetic blocks 54 are arranged inside the auxiliary ball 53, and the magnetic properties of the magnetic blocks 54 correspondingly arranged inside the spoiler ball 52 and the auxiliary ball 53 are opposite, so that the spoiler ball 52 and the auxiliary ball 53 can move in an approximately disordered manner within the active range, thereby promoting the flow of heat transfer oil within the active range to balance the temperature on the surface of the expanded ball 210, thereby improving the overall heat dissipation effect of the expanded ball 210.

[0041] In the present invention, when in use, the alloy tube to be processed is placed on the top of the threaded slide 23. At this time, the four groups of hydraulic clamps 24 are controlled to center the alloy tube, and the axis of the alloy tube and the diameter expansion ball 210 are measured and confirmed to be in the same straight line. At this time, the stepper motor 21 is started to drive the threaded rod 22 to rotate. At this time, the threaded slide 23 drives the fixed alloy tube to move toward the side of the diameter expansion ball 210. At the same time, the servo motor 25 is started, and the driving gear 26 and the driven gear 29 are cooperated to make the connecting tube 28 drive the diameter expansion ball 210 to rotate at a high speed, so as to perform the diameter expansion processing operation on the gradually approaching end of the alloy tube.

[0042] During the diameter expansion process, the fan 27 is started to blow a high-speed airflow into the air inlet 31. Due to the blowing of the airflow, the pressure in the air inlet 31 increases. At this time, the spherical cover 39 will drive the connecting rod 35 to move toward the side close to the alloy tube. At the same time, due to the influence of the airflow on the impeller 312, the connecting rod 35 drives the spherical cover 39 to rotate continuously, and cooperates with the multiple sets of fan-shaped guide grooves 310 opened on the arc surface of the spherical cover 39 to blow a continuous and relatively cold airflow to the joint between the diameter expansion ball 210 and the alloy tube. Since the diameter expansion ball 210 and the inner surface of the alloy tube undergo a certain deformation during the diameter expansion operation, the airflow will continue to take away the heat at the joint between the diameter expansion ball 210 and the alloy tube, so as to ensure that the temperature difference between the inside and outside of the diameter expansion of the alloy tube is reduced, avoid cracking during the diameter expansion operation, and ensure the processing quality of the alloy tube.

[0043] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A diameter expansion device for alloy tube production, comprising a base (1), an expansion assembly (2) for expanding the alloy tube is arranged on the upper surface of the base (1), a fan (27) is fixedly mounted on the upper surface of the base (1), an output end of the fan (27) is rotatably connected to a connecting pipe (28), an end of the connecting pipe (28) away from the fan (27) is fixedly mounted with an expansion ball (210), characterized in that: The expanded diameter ball (210) is provided with an air guide component (3) for improving the heat dissipation efficiency between the alloy tube and the high-speed rotating expanded diameter ball (210) when the two are in contact, and the expanded diameter ball (210) is provided with an auxiliary heat dissipation component (4) for improving the heat dissipation efficiency at the spherical surface of the expanded diameter ball (210).

2. The diameter expanding device for alloy tube production according to claim 1, characterized in that: The diameter expansion assembly (2) comprises a stepper motor (21), the stepper motor (21) is fixedly mounted on the upper surface of the base (1), a threaded rod (22) is fixedly mounted on the output end of the stepper motor (21), the outer wall of the threaded rod (22) is threadedly connected to a threaded slide seat (23), a hydraulic clamp (24) is arranged on the upper surface of the threaded slide seat (23), a servo motor (25) is fixedly mounted on the upper surface of the base (1), a driving gear (26) is fixedly mounted on the output end of the servo motor (25), and a driven gear (29) is passed through and fixedly mounted on the connecting pipe (28).

3. The diameter expanding device for alloy tube production according to claim 2, characterized in that: A T-shaped block is arranged at the bottom of the threaded slide (23), and a T-shaped slide groove matching the T-shaped block is opened on the upper surface of the base (1). The number of the hydraulic clamps (24) is four, and the four groups of hydraulic clamps (24) are arranged in a rectangular array on the top of the threaded slide (23).

4. The diameter expanding device for alloy tube production according to claim 2, characterized in that: The driving gear (26) meshes with the driven gear (29) to achieve transmission, and the ratio of the diameter of the driving gear (26) to the diameter of the driven gear (29) is 2:

1.

5. The diameter expanding device for alloy tube production according to claim 1, characterized in that: The air guide assembly (3) comprises an air inlet duct (31), the air inlet duct (31) is arranged at the inner axis of the connecting pipe (28), an annular groove (32) is arranged on a section of the inner wall of the air inlet duct (31) inside the diameter expansion ball (210), a mounting ring (33) is fixedly installed inside the annular groove (32), an inner ring (34) is fixedly connected to the arc-shaped inner surface of the mounting ring (33) via a thin rod, a connecting rod (35) is passed through the arc-shaped inner surface of the inner ring (34), and a straight groove (35) is arranged on the inner wall of the connecting rod (35). 6), a square rod (37) is slidably mounted on the inner wall of the straight groove (36), a return spring (38) is fixedly connected between the square rod (37) and the inner wall of the end of the straight groove (36), a spherical cover (39) is fixedly mounted on the end of the connecting rod (35) away from the fan (27), a guide groove (310) is formed on the inner surface of the spherical cover (39) on the side close to the expansion ball (210), an auxiliary ring (311) is arranged inside the air inlet duct (31), and a fan impeller (312) is passed through and fixedly mounted on the connecting rod (35).

6. The diameter expanding device for alloy tube production according to claim 5, characterized in that: A receiving groove having a size matching that of the spherical cover (39) is formed on the outer wall of the end of the expanded diameter ball (210) away from the fan (27), an inner ring groove having a diameter matching that of the length of the square rod (37) is formed on the arc-shaped inner surface of the inner ring (34), and the square rod (37) is arranged in the inner ring groove.

7. The diameter expanding device for alloy tube production according to claim 5, characterized in that: The number of the guide grooves (310) is multiple, and the multiple guide grooves (310) are evenly distributed on the inner surface of the spherical cover (39) in a circular array, and the guide grooves (310) are arranged in a fan shape with a narrow end close to the center of the spherical cover (39) and a wide end away from the center of the spherical cover (39), and a side surface of the spherical cover (39) close to the expanded ball (210) is arranged in an arc shape.

8. The diameter expanding device for alloy tube production according to claim 5, characterized in that: The auxiliary heat dissipation component (4) includes a conical cover (41), and the conical cover (41) is fixedly mounted on one end of the connecting rod (35) away from the spherical cover (39). The inner wall of the expanded diameter ball (210) is provided with an air guide cavity (42), and the inner wall of the expanded diameter ball (210) is provided with an annular heat exchange cavity (43). The conical cover (41) is arranged in a conical shape, and the bottom diameter of the conical cover (41) is arranged to be one third of the inner diameter of the air inlet duct (31). At the same time, the top end of the conical cover (41) faces the side of the fan (27). The air guide cavity (42) is arranged in an arc shape, and the number of the air guide cavities (42) is arranged in two groups, and the two groups of air guide cavities (42) are mirror-imaged and arranged on the upper and lower sides of the horizontal center axis of the expanded diameter ball (210).

9. The diameter expanding device for alloy tube production according to claim 8, characterized in that: The annular heat exchange chamber (43) is provided with a flow spoiler component (5) for promoting the flow of heat transfer oil. The flow spoiler component (5) comprises a limiting ball (51). The limiting ball (51) is fixedly mounted on the arc-shaped inner surface of the annular heat exchange chamber (43). The annular heat exchange chamber (43) is provided with a flow spoiler ball (52) and an auxiliary ball (53). A rectangular cavity is provided inside the flow spoiler ball (52). A magnetic block (54) is provided inside the rectangular cavity. The magnetic properties of the flow spoiler ball (52) and the magnetic block (54) correspondingly provided inside the auxiliary ball (53) are opposite.

10. The diameter expanding device for alloy tube production according to claim 9, characterized in that: The limiting balls (51) are arranged in a plurality of groups, and each group of limiting balls (51) is provided with two limiting balls. The two limiting balls (51) are correspondingly arranged on the upper and lower inner surfaces of the annular heat exchange cavity (43), and the plurality of limiting balls (51) are evenly distributed in a circular array inside the annular heat exchange cavity (43), forming a plurality of active zones inside the annular heat exchange cavity (43), and the spoiler balls (52) and the auxiliary balls (53) are correspondingly arranged in the same active zone.

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