A multifunctional metal pipe diameter-changing expansion device

Abstract

The present invention relates to the technical field of expanding equipment, and in particular to a metal tube variable diameter multifunctional expanding equipment, comprising a plurality of mobile bases, which are distributed in a ring shape, a notch is opened on the side wall of the mobile base, a first slider is slidably arranged in the notch, and an extrusion roller is rotatably arranged on the first slider; by automatically expanding the metal tube, metal tubes with different calibers and shapes can be processed, and the metal tubes can be conveniently processed into a variety of required specifications, effectively avoiding a large amount of mold development work, greatly reducing cost investment, simplifying the expanding method, and avoiding the phenomenon of frequent mold replacement of the equipment, effectively simplifying the operation method, and improving the convenience of equipment use.

Description

Technical Field

[0001] The invention relates to the technical field of expanding equipment, in particular to a metal pipe variable diameter multifunctional expanding equipment. Background Art

[0002] As we all know, flaring refers to the process of enlarging or deforming the ports of tubular parts so that the port diameter or port shape meets the specified requirements for docking and installation of the tube. Traditional flaring equipment mainly relies on molds to extrude the tube, thereby deforming the tube. However, this flaring method has a major drawback. When processing tubes of different diameters or shapes into multiple specifications, it is necessary to make molds for each processing requirement, which leads to a significant increase in the number of molds developed and the cost investment. At the same time, the mold replacement work is relatively cumbersome, resulting in poor convenience of equipment use. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a metal pipe variable diameter multifunctional expanding device.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] The metal tube variable diameter multifunctional expanding device comprises a plurality of movable bases, which are distributed in a ring shape, a notch is opened on the side wall of the movable base, a first slider is slidably arranged in the notch, and an extrusion roller is rotatably arranged on the first slider;

[0006] It also includes a clamping structure, which is used to clamp the metal pipe.

[0007] Furthermore, the interior of the mobile base is hollow, and the notch on the mobile base is connected to the interior of the mobile base;

[0008] The translatory disk is also provided with a plurality of guide rails on the circumferential outer wall of the translatory disk, a slide rod is provided on the guide rail, and the guide rail is slidably connected to the slide rod, the outer end of the slide rod is slidably inserted into the movable base, a wedge block is installed at the end of the slide rod in the movable base, the wedge block slides in the movable base, a second slide block is slidably provided on the inclined surface of the wedge block, a push rod is rotatably provided on the second slide rod, the outer end of the push rod passes through the first slide rod and is connected to the extrusion roller, and the push rod is rotatably connected to the first slide rod.

[0009] Furthermore, it also includes a fixed outer plate, a plurality of first bevel gears are arranged on the outer side of the fixed outer plate, the plurality of first bevel gears are distributed in a ring shape, two adjacent first bevel gears are meshed and connected with each other, a fixed plate is arranged on the first bevel gears, the first bevel gears are rotatably connected with the fixed plate, and the fixed plate is fixed on the fixed outer plate;

[0010] A first motor is arranged on one of the first bevel gears, and the first motor is fixed on the fixed outer plate. A toggle rod is arranged on the remaining multiple first bevel gears, and the toggle rod is eccentrically connected to the first bevel gear. A sliding sleeve is arranged on the outer sliding sleeve of the toggle rod, and a push rod is installed on the sliding sleeve. The push rod passes through the fixed outer plate and is connected to the translation disk, and the push rod is slidably connected to the fixed outer plate.

[0011] Furthermore, an outer toothed ring is rotatably mounted on the outer wall of the fixed outer plate, a spur gear is meshed on the outer toothed ring, a second motor is arranged on the spur gear, and the second motor is fixed on the fixed outer plate;

[0012] A plurality of pull rods are rotatably provided on the inner wall of the outer gear ring. The pull rods are inclined, and a moving rod is rotatably provided on the outer end of the pull rods. A plurality of guide grooves are opened on the side wall of the fixed outer plate. The plurality of guide grooves are distributed in a ring shape around the translation disk. The length direction of the guide groove is along the radial direction of the translation disk. The outer end of the moving rod passes through the guide groove and is fixed on the outer wall of the moving base. The moving rod is slidably connected to the guide groove.

[0013] Furthermore, it also includes a third motor, which is fixed on the outer wall of the fixed outer plate, and a transmission shaft is provided at the output end of the third motor, which passes through the gaps between the plurality of first bevel gears, the fixed outer plate and the translation disk and extends between the plurality of movable bases, the transmission shaft is rotationally connected to the fixed outer plate, the transmission shaft is slidingly connected to the translation disk, a second bevel gear is provided at the outer end of the transmission shaft, a plurality of third bevel gears are meshedly provided on the second bevel gear, a polygonal rod is installed on the third bevel gear, and a transmission sleeve is provided on the outer sliding sleeve of the polygonal rod;

[0014] The outer wall of the push rod is provided with worm gears, a long worm wheel is rotatably provided in the movable base, the long worm wheel is meshedly connected with the worm gears on the push rod, and the outer end of the transmission sleeve is transmission-connected with the long worm wheel.

[0015] Furthermore, a support sleeve is rotatably provided on the polygonal rod, a telescopic rod is installed on the outer wall of the support sleeve, the fixed end of the telescopic rod is installed on the translation disk, a connecting rod is installed on the movable end of the telescopic rod, and a support ring is rotatably provided on the side wall of the second bevel gear, and the outer end of the connecting rod is connected to the support ring.

[0016] Further, the clamping structure includes a rotating cylinder, a plurality of annular slide rails are mounted on the outer wall of the rotating cylinder, a base block is arranged at the bottom of the annular slide rail, the base block is slidably connected with the annular slide rail, the base block is fixed on the fixed outer plate, the axis of the rotating cylinder coincides with the axis of the plurality of movable bases, a fourth motor is mounted on the fixed outer plate, a transmission wheel is arranged at the output end of the fourth motor, and the transmission wheel is transmission-connected with the outer wall of the rotating cylinder;

[0017] A plurality of groups of cylinders are arranged in the rotating cylinder, each group of cylinders is composed of a plurality of cylinders, and each group of cylinders is distributed in a ring shape, and an extrusion plate is arranged at the movable end of the cylinder.

[0018] Furthermore, a guide rod is arranged between two adjacent cylinders in each group of cylinders. The guide rod is fixed in the rotating cylinder. The length direction of the guide rod is along the radial direction of the rotating cylinder. A guide sleeve is provided on the sliding sleeve of the guide rod. Two synchronous plates are rotatably arranged on the guide sleeve. The outer ends of the two synchronous plates are respectively rotatably installed on two adjacent extrusion plates.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: by automatically expanding the metal tube, it is possible to process metal tubes with different calibers and shapes, and it is convenient to process the metal tubes into various required specifications, effectively avoiding a large amount of mold development work, greatly reducing cost investment, simplifying the expanding method, and avoiding the phenomenon of frequent mold replacement of equipment, effectively simplifying the operation method, and improving the convenience of equipment use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

[0022] Figure 2 yes Figure 1 Schematic diagram of the structure of the middle fixed outer plate from the left;

[0023] Figure 3 yes Figure 1 A schematic diagram of the enlarged structure of the mobile base;

[0024] Figure 4 yes Figure 3 The left side structural diagram of the mobile base;

[0025] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure of the mobile base;

[0026] Figure 6 yes Figure 5 A schematic diagram of the enlarged structure of the mobile base;

[0027] Figure 7 yes Figure 1 A schematic diagram of the partially enlarged structure at center A;

[0028] Figure 8 yes Figure 2 A schematic diagram of the partially enlarged structure at B in the middle;

[0029] Markings in the attached drawings: 1, moving base; 2, first slider; 3, squeezing roller; 4, translation disk; 5, guide rail; 6, slide rod; 7, wedge block; 8, second slider; 9, push rod; 10, fixed outer plate; 11, first bevel gear; 12, fixed plate; 13, first motor; 14, toggle rod; 15, sliding sleeve; 16, push rod; 17, outer gear ring; 18, spur gear; 19, second motor; 20, pull rod; 21, moving rod; 22 , the third motor; 23, the transmission shaft; 24, the second bevel gear; 25, the third bevel gear; 26, the polygonal rod; 27, the transmission sleeve; 28, the long worm gear; 29, the support sleeve; 30, the telescopic rod; 31, the connecting rod; 32, the support ring; 33, the rotating cylinder; 34, the annular slide rail; 35, the base block; 36, the fourth motor; 37, the transmission wheel; 38, the cylinder; 39, the extrusion plate; 40, the guide rod; 41, the guide sleeve; 42, the synchronous plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside”, etc., are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. This embodiment is written in a progressive manner.

[0033] like Figures 1 to 3 As shown, a metal tube variable diameter multifunctional expanding device of the present invention comprises a plurality of movable bases 1, the plurality of movable bases 1 are distributed in a ring shape, a notch is opened on the side wall of the movable base 1, a first slider 2 is slidably arranged in the notch, and a squeezing roller 3 is rotatably arranged on the first slider 2;

[0034] It also includes a clamping structure, which is used to clamp the metal pipe.

[0035] In this embodiment, when it is necessary to expand the diameter of the metal tube, the metal tube is fixed on the clamping structure, and the port of the metal tube is sleeved on the outside of multiple extrusion rollers 3, the axis of the metal tube coincides with the center point axis of multiple movable bases 1, and the multiple extrusion rollers 3 are rotated, and the multiple movable bases 1 are pushed to move outward at the same time, and the movable base 1 drives the extrusion rollers 3 to move synchronously. When the extrusion rollers 3 contact the inner wall of the metal tube, the metal tube is rotated, and the movable base 1 continues to move. The extrusion rollers 3 that move outward and are in a rotating state roll the inner wall of the metal tube, thereby pushing the port tube wall of the metal tube to expand outward, thereby realizing the expansion processing of the metal tube. At the same time, the multiple extrusion rollers 3 can expand metal tubes of different diameters into various specifications according to processing requirements.

[0036] In this embodiment, when it is necessary to deform the shape of the metal tube port, the redundant squeezing rollers 3 on the multiple movable bases 1 are removed, so that the remaining multiple squeezing rollers 3 are distributed in a regular polygon, and each squeezing roller 3 corresponds to one side of the metal tube port polygon after deformation, the metal tube is fixed on the clamping structure, and the port of the metal tube is sleeved on the outside of the multiple squeezing rollers 3, the squeezing rollers 3 are rotated, and the multiple movable bases 1 are pushed to move outward at the same time. When the squeezing rollers 3 contact the inner wall of the metal tube, the metal tube is rotated, and the squeezing rollers 3 continue to move outward at this time, so that the squeezing rollers 3 perform preliminary expansion processing on the metal tube. When the diameter of the metal tube is the same as the diameter of the inscribed circle of the metal tube port polygon after deformation, the movable base 1 stops moving. The first slider 2 is pushed to slide back and forth on the movable base 1, and the first slider 2 drives the extrusion roller 3 to move back and forth. When the extrusion roller 3 moves outward to the maximum distance, the extrusion roller 3 is located at the corner position of the metal tube port polygon after deformation. At this time, the extrusion roller 3 is farthest from the metal tube axis. Since the extrusion roller 3 follows the first slider 2 to move back and forth, when the extrusion roller 3 moves back and forth for one cycle, the extrusion roller 3 completes the rolling and expanding work on one side of the metal tube port polygon. Since the extrusion roller 3 is in a reciprocating state and the metal tube continues to rotate, the extrusion roller 3 continuously rolls and expands each side of the metal tube port polygon, and multiple extrusion rollers 3 move synchronously, thereby realizing the deformation of the metal tube port.

[0037] In this embodiment, by automatically expanding the metal tube, it is possible to process metal tubes with different calibers and shapes, and it is convenient to process the metal tubes into various required specifications, effectively avoiding a large amount of mold development work, greatly reducing cost investment, simplifying the expanding method, and avoiding the phenomenon of frequent mold replacement of equipment, effectively simplifying the operation method, and improving the convenience of equipment use.

[0038] like Figures 4 to 6As shown, as a preferred embodiment of the above, the interior of the mobile base 1 is hollow, and the notch on the mobile base 1 is connected to the interior of the mobile base 1;

[0039] It also includes a translation disk 4, a plurality of guide rails 5 are arranged on the circumferential outer wall of the translation disk 4, a slide rod 6 is arranged on the guide rail 5, and the guide rail 5 is slidably connected to the slide rod 6, the outer end of the slide rod 6 is slidably inserted into the movable base 1, a wedge block 7 is installed at the end of the slide rod 6 in the movable base 1, the wedge block 7 slides in the movable base 1, a second slide block 8 is slidably arranged on the inclined surface of the wedge block 7, a push rod 9 is rotatably arranged on the second slide block 8, the outer end of the push rod 9 passes through the first slide block 2 and is connected to the extrusion roller 3, and the push rod 9 is rotatably connected to the first slide block 2.

[0040] In this embodiment, when the moving base 1 moves to the specified position, the translation disk 4 is pushed to move toward the moving base 1, and the translation disk 4 pushes the wedge block 7 to move through the guide rail 5 and the slide rod 6. The slide rod 6 slides on the moving base 1, and the wedge block 7 slides in the moving base 1. The wedge block 7 pushes the second slider 8 to slide on the inclined surface of the wedge block 7. At the same time, the second slider 8 drives the first slider 2 and the squeezing roller 3 to move through the push rod 9, so that the first slider 2 moves on the notch of the moving base 1, and the translation disk 4 is reciprocated, so that the first slider 2 and the squeezing roller 3 reciprocate on the moving base 1, and the push rod 9 is rotated. The push rod 9 can drive the squeezing roller 3 to rotate. When the moving base 1 moves outward, the moving base 1 can drive the slide rod 6 to slide on the guide rail 5, so that when the moving base 1 moves to different positions, the translation disk 4 can push the first slider 2 to reciprocate.

[0041] like Figure 2 and Figure 8 As shown, as a preferred embodiment of the above embodiment, it further includes a fixed outer plate 10, a plurality of first bevel gears 11 are arranged on the outer side of the fixed outer plate 10, the plurality of first bevel gears 11 are distributed in an annular shape, two adjacent first bevel gears 11 are meshed and connected with each other, a fixed plate 12 is arranged on the first bevel gears 11, the first bevel gears 11 are rotatably connected with the fixed plate 12, and the fixed plate 12 is fixed on the fixed outer plate 10;

[0042] A first motor 13 is provided on one of the first bevel gears 11, and the first motor 13 is fixed on the fixed outer plate 10. A toggle rod 14 is provided on the remaining multiple first bevel gears 11, and the toggle rod 14 is eccentrically connected to the first bevel gear 11. A sliding sleeve 15 is provided on the outer sliding sleeve of the toggle rod 14, and a push rod 16 is installed on the sliding sleeve 15. The push rod 16 passes through the fixed outer plate 10 and is connected to the translation disk 4, and the push rod 16 is slidably connected to the fixed outer plate 10.

[0043] In this embodiment, the first motor 13 drives multiple first bevel gears 11 to rotate synchronously through the first bevel gear 11 thereon, the first bevel gear 11 drives the sliding sleeve 15 to reciprocate through the toggle rod 14, the sliding sleeve 15 pushes the translation disk 4 to reciprocate through the pushing rod 16, thereby causing the first slider 2 and the extrusion roller 3 to reciprocate, the fixed plate 12 supports the first bevel gear 11, and the toggle rod 14 slides in the sliding sleeve 15.

[0044] like Figures 2 to 4 As shown, as a preferred embodiment of the above, an outer toothed ring 17 is rotatably mounted on the outer wall of the fixed outer plate 10, a spur gear 18 is meshedly arranged on the outer toothed ring 17, a second motor 19 is arranged on the spur gear 18, and the second motor 19 is fixed on the fixed outer plate 10;

[0045] A plurality of pull rods 20 are rotatably provided on the inner wall of the outer gear ring 17. The pull rods 20 are inclined, and a moving rod 21 is rotatably provided on the outer end of the pull rods 20. A plurality of guide grooves are opened on the side wall of the fixed outer plate 10. The plurality of guide grooves are distributed in a ring shape around the translation disk 4. The length direction of the guide groove is along the radial direction of the translation disk 4. The outer end of the moving rod 21 passes through the guide groove and is fixed on the outer wall of the moving base 1. The moving rod 21 is slidably connected to the guide groove.

[0046] In this embodiment, the second motor 19 drives the outer gear ring 17 to rotate through the spur gear 18, and the outer gear ring 17 pulls multiple moving rods 21 to move synchronously through multiple pull rods 20. The moving rods 21 slide in the guide groove, and the moving rods 21 drive the moving base 1 to move, so that the multiple moving bases 1 move synchronously outward, which is convenient for adjusting the position of the moving base 1.

[0047] like Figure 2 , Figures 5 and 6 As shown, as a preferred embodiment of the above embodiment, it also includes a third motor 22, the third motor 22 is fixed on the outer wall of the fixed outer plate 10, and a transmission shaft 23 is provided at the output end of the third motor 22. The transmission shaft 23 passes through the gaps between the multiple first bevel gears 11, the fixed outer plate 10 and the translation disk 4 and extends between the multiple mobile bases 1. The transmission shaft 23 is rotatably connected to the fixed outer plate 10, and the transmission shaft 23 is slidably connected to the translation disk 4. A second bevel gear 24 is provided at the outer end of the transmission shaft 23, and a plurality of third bevel gears 25 are meshedly provided on the second bevel gear 24. A multi-faceted rod 26 is installed on the third bevel gear 25, and a transmission sleeve 27 is provided on the outer sliding sleeve of the multi-faceted rod 26;

[0048] The outer wall of the push rod 9 is provided with worm gears, a long worm wheel 28 is rotatably provided in the mobile base 1 , the long worm wheel 28 is meshedly connected with the worm gears on the push rod 9 , and the outer end of the transmission sleeve 27 is transmission-connected with the long worm wheel 28 .

[0049] In this embodiment, the third motor 22 drives the translation disk 4 to rotate through the transmission shaft 23, and the second bevel gear 24 drives the push rod 9 to rotate through the third bevel gear 25, the polygonal rod 26, the transmission sleeve 27 and the long worm gear 28, thereby driving the extrusion roller 3 to rotate. When the position of the mobile base 1 moves, the mobile base 1 drives the transmission sleeve 27 to slide on the polygonal rod 26, so that the polygonal rod 26 and the transmission sleeve 27 always maintain a transmission state, and the translation disk 4 can slide on the transmission shaft 23. When the wedge block 7 pushes the push rod 9 to move in the mobile base 1, the push rod 9 and the long worm gear 28 always maintain a meshing state, thereby facilitating the extrusion roller 3 to maintain a rotating state.

[0050] like Figure 6 As shown, as a preferred embodiment of the above embodiment, a support sleeve 29 is rotatably provided on the polygonal rod 26, a telescopic rod 30 is installed on the outer wall of the support sleeve 29, the fixed end of the telescopic rod 30 is installed on the translation disk 4, a connecting rod 31 is installed on the movable end of the telescopic rod 30, and a support ring 32 is rotatably provided on the side wall of the second bevel gear 24, and the outer end of the connecting rod 31 is connected to the support ring 32.

[0051] In this embodiment, when the translation disk 4 moves, the translation disk 4 pushes the telescopic rod 30 to perform a telescopic movement. By providing the support sleeve 29, the telescopic rod 30, the connecting rod 31 and the support ring 32, the translation disk 4, the second bevel gear 24 and the third bevel gear 25 can be conveniently fixed and supported, so that the second bevel gear 24 and the third bevel gear 25 can always maintain a meshing state. At the same time, it is convenient to improve the rotation stability of the third bevel gear 25 and dynamically support the third bevel gear 25.

[0052] like Figure 1 and Figure 7 As shown, as a preferred embodiment of the above embodiment, the clamping structure includes a rotating cylinder 33, a plurality of annular slide rails 34 are mounted on the outer wall of the rotating cylinder 33, a base block 35 is provided at the bottom of the annular slide rail 34, the base block 35 is slidably connected with the annular slide rail 34, the base block 35 is fixed on the fixed outer plate 10, the axis of the rotating cylinder 33 coincides with the axis of the plurality of movable bases 1, a fourth motor 36 is installed on the fixed outer plate 10, a transmission wheel 37 is provided at the output end of the fourth motor 36, and the transmission wheel 37 is transmission-connected with the outer wall of the rotating cylinder 33;

[0053] A plurality of groups of cylinders 38 are arranged in the rotating cylinder 33 , each group of cylinders 38 is composed of a plurality of cylinders 38 , and each group of cylinders 38 is distributed in a ring shape, and a squeezing plate 39 is arranged at a movable end of the cylinder 38 .

[0054] In this embodiment, the metal tube is inserted into the rotating cylinder 33, and each group of cylinders 38 synchronously pushes the extrusion plate 39 thereon to move. Multiple extrusion plates 39 synchronously extrude and fix the outer wall of the metal tube, thereby fixing the metal tube in the rotating cylinder 33. The axis of the metal tube coincides with the axis of multiple movable bases 1. The fourth motor 36 drives the rotating cylinder 33 to rotate through the transmission wheel 37, thereby driving the metal tube to rotate. At the same time, the rotating cylinder 33 drives the annular slide rail 34 to slide on the base block 35.

[0055] like Figure 7 As shown, as a preferred embodiment of the above embodiment, a guide rod 40 is arranged between two adjacent cylinders 38 in each group of cylinders 38, and the guide rod 40 is fixed in the rotating cylinder 33. The length direction of the guide rod 40 is along the radial direction of the rotating cylinder 33, and a guide sleeve 41 is slidably sleeved on the guide rod 40. Two synchronous plates 42 are rotatably arranged on the guide sleeve 41, and the outer ends of the two synchronous plates 42 are rotatably mounted on two adjacent extrusion plates 39 respectively.

[0056] In this embodiment, when the extrusion plate 39 moves, the extrusion plate 39 drives the guide sleeve 41 to slide on the guide rod 40 through the synchronization plate 42, so that the two adjacent extrusion plates 39 move synchronously, which facilitates the synchronous movement of multiple extrusion plates 39 in each group of cylinders 38, effectively improving the centering accuracy of the metal tube and improving the processing accuracy of the metal tube.

[0057] The metal tube variable diameter multifunctional expanding device of the present invention has common mechanical installation, connection or setting methods, and can be implemented as long as it can achieve its beneficial effects.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multifunctional metal tube diameter-changing expanding device, characterized in that: It comprises a plurality of movable bases (1), the plurality of movable bases (1) are distributed in a ring shape, a notch is provided on a side wall of the movable base (1), a first sliding block (2) is slidably arranged in the notch, and a squeezing roller (3) is rotatably arranged on the first sliding block (2); Also included is a clamping structure, which is used to clamp the metal pipe; The interior of the movable base (1) is hollow, and the notch on the movable base (1) is connected to the interior of the movable base (1); It also includes a translation disk (4), a plurality of guide rails (5) are arranged on the circumferential outer wall of the translation disk (4), a slide rod (6) is arranged on the guide rail (5), and the guide rail (5) is slidably connected to the slide rod (6), the outer end of the slide rod (6) is slidably inserted into the movable base (1), a wedge block (7) is installed at the end of the slide rod (6) in the movable base (1), the wedge block (7) slides in the movable base (1), a second slide block (8) is slidably arranged on the inclined surface of the wedge block (7), a push rod (9) is rotatably arranged on the second slide block (8), the outer end of the push rod (9) passes through the first slide block (2) and is connected to the squeezing roller (3), and the push rod (9) is rotatably connected to the first slide block (2); It also includes a fixed outer plate (10), a plurality of first bevel gears (11) are arranged on the outer side of the fixed outer plate (10), the plurality of first bevel gears (11) are distributed in a ring shape, two adjacent first bevel gears (11) are meshed and connected with each other, a fixed plate (12) is arranged on the first bevel gears (11), the first bevel gears (11) are rotatably connected to the fixed plate (12), and the fixed plate (12) is fixed on the fixed outer plate (10); A first motor (13) is disposed on one of the first bevel gears (11), the first motor (13) being fixed on the fixed outer plate (10), and a toggle rod (14) is disposed on the remaining plurality of first bevel gears (11), the toggle rod (14) being eccentrically connected to the first bevel gear (11), an outer sliding sleeve of the toggle rod (14) being provided with a sliding sleeve (15), a push rod (16) being mounted on the sliding sleeve (15), the push rod (16) passing through the fixed outer plate (10) and being connected to the translation disk (4), and the push rod (16) being slidably connected to the fixed outer plate (10); An outer toothed ring (17) is rotatably mounted on the outer wall of the fixed outer plate (10), a spur gear (18) is meshedly arranged on the outer toothed ring (17), a second motor (19) is arranged on the spur gear (18), and the second motor (19) is fixed on the fixed outer plate (10); A plurality of pull rods (20) are rotatably arranged on the inner wall of the outer gear ring (17). The pull rods (20) are inclined. A moving rod (21) is rotatably arranged on the outer end of the pull rod (20). A plurality of guide grooves are opened on the side wall of the fixed outer plate (10). The plurality of guide grooves are distributed in a ring shape around the translation disk (4). The length direction of the guide groove is along the radial direction of the translation disk (4). The outer end of the moving rod (21) passes through the guide groove and is fixed on the outer wall of the moving base (1). The moving rod (21) is slidably connected to the guide groove.

2. The metal tube variable diameter multifunctional expanding device according to claim 1, characterized in that: It also includes a third motor (22), the third motor (22) is fixed on the outer wall of the fixed outer plate (10), the output end of the third motor (22) is provided with a transmission shaft (23), the transmission shaft (23) passes through the gaps between the plurality of first bevel gears (11), the fixed outer plate (10) and the translation disk (4), and extends between the plurality of movable bases (1), the transmission shaft (23) is rotationally connected to the fixed outer plate (10), the transmission shaft (23) is slidingly connected to the translation disk (4), the outer end of the transmission shaft (23) is provided with a second bevel gear (24), the second bevel gear (24) is meshed with a plurality of third bevel gears (25), a polygonal rod (26) is mounted on the third bevel gear (25), and the outer sliding sleeve of the polygonal rod (26) is provided with a transmission sleeve (27); The outer wall of the push rod (9) is provided with worm gears, a long worm wheel (28) is rotatably provided inside the movable base (1), the long worm wheel (28) is meshingly connected with the worm gears on the push rod (9), and the outer end of the transmission sleeve (27) is transmission-connected with the long worm wheel (28).

3. The metal tube variable diameter multifunctional expanding device according to claim 2, characterized in that: A support sleeve (29) is rotatably provided on the polygonal rod (26), a telescopic rod (30) is mounted on the outer wall of the support sleeve (29), a fixed end of the telescopic rod (30) is mounted on the translation plate (4), a connecting rod (31) is mounted on the movable end of the telescopic rod (30), a support ring (32) is rotatably provided on the side wall of the second bevel gear (24), and the outer end of the connecting rod (31) is connected to the support ring (32).

4. The metal tube variable diameter multifunctional expanding device according to claim 3, characterized in that: The clamping structure comprises a rotating cylinder (33), a plurality of annular slide rails (34) are sleeved on the outer wall of the rotating cylinder (33), a base block (35) is arranged at the bottom of the annular slide rail (34), the base block (35) is slidably connected to the annular slide rail (34), the base block (35) is fixed on the fixed outer plate (10), the axis of the rotating cylinder (33) coincides with the axis of the plurality of movable bases (1), a fourth motor (36) is installed on the fixed outer plate (10), a transmission wheel (37) is arranged at the output end of the fourth motor (36), and the transmission wheel (37) is transmission-connected to the outer wall of the rotating cylinder (33); A plurality of groups of cylinders (38) are arranged in the rotating cylinder (33), each group of cylinders (38) is composed of a plurality of cylinders (38), and each group of cylinders (38) is distributed in a ring shape, and a pressing plate (39) is arranged at the movable end of the cylinder (38).

5. The metal tube variable diameter multifunctional expanding device according to claim 4, characterized in that: A guide rod (40) is provided between two adjacent cylinders (38) in each group of cylinders (38). The guide rod (40) is fixed in the rotating cylinder (33). The length direction of the guide rod (40) is along the radial direction of the rotating cylinder (33). A guide sleeve (41) is slidably sleeved on the guide rod (40). Two synchronous plates (42) are rotatably provided on the guide sleeve (41). The outer ends of the two synchronous plates (42) are rotatably mounted on two adjacent extrusion plates (39).

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