Rolling expansion equipment and steel pipe rolling process

Abstract

The present invention relates to the field of metal processing technology, and discloses a rolling expansion device and a steel pipe rolling process, including a rolling machine and a calibration machine, a steel pipe embryo is placed in the rolling machine, a transverse rolling device and a vertical rolling device are arranged on the rolling machine, a transverse calibration device and a vertical calibration device are arranged on the calibration machine, a primary transmission assembly is arranged between the transverse rolling device and the transverse calibration device, a secondary transmission assembly is arranged between the vertical rolling device and the vertical calibration device, and a conduction assembly is arranged between the primary transmission assembly and the secondary transmission assembly; the conduction assembly includes a conduction member. The present invention fixes and positions the steel pipe embryo by arranging the primary transmission assembly and the secondary transmission assembly, and solves the problem that the cylinder has a certain kinetic energy difference, which easily leads to a certain difference in the moving distance of the four rollers, thereby making it difficult for the four rollers to accurately position and fix the steel pipe.

Description

Technical Field

[0001] The invention relates to the technical field of metal processing, in particular to a rolling expansion device and a steel pipe rolling process. Background Art

[0002] Rolling mainly relies on the power of rollers to extrude metal raw materials within a certain temperature range, causing plastic deformation of the raw materials to achieve the processing purpose. In the process of rolling steel pipes, it is first necessary to control the surface of the rollers of the roller press to fit with the outer surface of the steel pipe, so as to achieve the effect of fixing the steel pipe and positioning the steel pipe. When the existing roller press positions the steel pipe, it controls the movement of rollers in four directions through multiple cylinders to achieve the fit between the rollers and the surface of the steel pipe. Considering the kinetic energy difference of the cylinders, it is easy to cause a certain difference in the moving distance of the four rollers, which makes it difficult for the four rollers to accurately position the steel pipe and fix the steel pipe. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0004] A rolling expansion device and a steel pipe rolling process, comprising a rolling machine and a calibration machine, wherein a steel pipe embryo is placed in the rolling machine, a transverse rolling device and a vertical rolling device are arranged on the rolling machine, a transverse calibration device and a vertical calibration device are arranged on the calibration machine, a primary transmission component is arranged between the transverse rolling device and the transverse calibration device, a secondary transmission component is arranged between the vertical rolling device and the vertical calibration device, and a conduction component is arranged between the primary transmission component and the secondary transmission component;

[0005] The transverse rolling device includes a pair of transverse squeezing rollers placed transversely, the transverse calibration device includes a pair of transverse calibration rollers placed transversely, and the primary transmission assembly drives the pair of transverse squeezing rollers and the pair of transverse calibration rollers to move relative to each other at the same time;

[0006] The vertical rolling device includes a pair of vertical squeezing rollers placed vertically, the vertical calibration device includes a pair of vertical calibration rollers placed vertically, and the secondary transmission assembly drives the pair of vertical squeezing rollers and the pair of vertical calibration rollers to move relative to each other at the same time;

[0007] The transmission component includes a transmission member. When the transmission member is in operation, the primary transmission component and the secondary transmission component are driven to operate simultaneously. When the transmission member stops operating, the primary transmission component and the secondary transmission component are operated separately.

[0008] Preferably, the roller press is provided with a base and brackets arranged on both sides of the top of the base, two bearing seats are slidably provided in the bracket, a pair of the vertical extrusion rollers are rotatably connected to the bearing seats through bearings, a secondary driving device is fixedly connected to the bracket, and the secondary driving device drives the two vertical extrusion rollers to rotate, a fixed seat is fixedly connected to one side of the top of the base, and sliding seats are slidably connected to both sides of the top of the fixed seat, a pair of the transverse extrusion rollers are rotatably connected to the sliding seat through bearings, and a primary driving device is fixedly connected to the fixed seat, and the primary driving device drives the two transverse extrusion rollers to rotate simultaneously.

[0009] Preferably, support plates are fixedly connected to both sides of the top of the base, a top plate is fixedly connected to the top of the support plate, a rectangular seat is fixedly connected between the two support plates, right-angle plates are fixedly connected at four corners of one side of the rectangular seat, a sliding groove is opened on one side of the vertical parts of the four right-angle plates, a sliding block is slidably connected in the sliding groove, both ends of the vertical calibration roller are rotatably connected to the sliding block through bearings, a sliding groove is opened on one side of the horizontal part of the right-angle plate, a sliding block is slidably connected in the sliding groove, and both ends of the horizontal calibration roller are rotatably connected to the sliding block through bearings.

[0010] Preferably, the primary transmission assembly includes a connecting plate, vertical plates are fixedly connected to both sides of the top of the fixed seat, guide rails are fixedly connected to the tops of the two vertical plates, guide blocks are slidably connected to both sides of the guide rails, the top of the transverse extrusion roller is rotatably connected to the guide block through a bearing, connecting rods are fixedly connected to both ends of one side of the guide block, one end of the connecting rod passes through the vertical plate and is fixedly connected to the connecting plate, a rectangular rod is fixedly connected to one side of the slider, and one end of the rectangular rod is fixedly connected to the connecting plate.

[0011] Preferably, the primary transmission assembly also includes a rotating rod, rectangular plates are fixedly connected on both sides of the support plate, the rotating rod is rotatably arranged in the rectangular seat and both ends extend to the outside of the support plate, threaded rods with opposite thread directions are respectively fixedly connected at both ends of the rotating rod, a right-angle seat is fixedly connected to one side of the rectangular plate, one end of the threaded rod is rotatably connected to the right-angle seat through a bearing, a first motor is fixedly connected to one end of one of the right-angle seats, and the output end of the first motor is fixedly connected to one end of one of the threaded rods.

[0012] Preferably, the secondary transmission assembly includes a first bidirectional screw, a rectangular groove is opened on the inner side of the bracket, rectangular blocks are fixedly connected on both sides of the bearing seat, the rectangular blocks are slidably arranged in the rectangular groove, the first bidirectional screw is rotatably arranged in the rectangular groove through a bearing and is threadedly connected to the rectangular block, a first gear is fixedly connected to the top of the first bidirectional screw, a first toothed belt meshing with the first gear is arranged between the two first gears, a telescopic rod is rotatably connected to the top of the inner side of the bracket through a bearing, the telescopic rod is rotatably connected to the top of one of the bearing seats through a bearing, a first tooth groove is opened at the bottom of the outer periphery of the telescopic rod, and the telescopic rod is meshed with the first tooth belt through the first tooth groove.

[0013] Preferably, the secondary transmission assembly also includes a second bidirectional screw, one side of the sliding block is fixedly connected to an extension plate, one side of the rectangular seat is provided with an inner groove, the extension plate is slidably arranged in the inner groove, the second bidirectional screw is rotatably arranged in the inner groove through a bearing and is threadedly connected to the extension plate, one side of the support plate is fixedly connected to a bearing seat, a vertical rod is rotatably connected between the two bearing seats through a bearing, the outer periphery of the vertical rod and the top of the second bidirectional screw are fixedly connected to a second gear, the outer peripheries of the two second gears are provided with a second toothed belt meshingly connected to the second gear, a second motor is fixedly connected to the top of one of the bearing seats, and the output end of the second motor is fixedly connected to one end of one of the vertical rods.

[0014] Preferably, the secondary transmission assembly also includes a fourth toothed belt, two horizontal plates are slidably connected to one side of the bracket, a movable rod is rotatably connected between the two horizontal plates through a bearing, third tooth grooves are provided on the outer peripheries of the movable rod and the telescopic rod, a third toothed belt meshing with the third tooth groove is sleeved on the outer peripheries of the movable rod and the telescopic rod, a fourth tooth groove is provided on the outer peripheries of the movable rod and the vertical rod, and the movable rod and the vertical rod are meshingly connected with the fourth toothed belt via the fourth tooth groove.

[0015] Preferably, the transmission component also includes an upper extension rod and a lower extension rod, the upper extension rod is rotatably connected to one side of the support plate through a bearing, one end of the lower extension rod is rotatably connected to the right-angle seat through a bearing and is fixedly connected to one end of the threaded rod, a worm is fixedly connected to the outside of the upper extension rod, a worm gear is arranged outside the vertical rod, the worm gear is meshed with the worm, the transmission component includes a transmission belt, one end of the upper extension rod and the lower extension rod are fixedly connected to the extension rod, a plurality of evenly distributed card grooves are provided on one side of the outer circumference of the extension rod, a plurality of grooves are provided in the transmission belt, a card block is slidably connected in the groove, the transmission belt is meshed with the card groove through the card block, a spring is fixedly connected to the top of the card block, and both ends of the card block are arranged to be arc surfaces.

[0016] The steel pipe rolling process uses a rolling expansion device, and the specific steps are as follows:

[0017] When the cross section of the steel tube embryo is circular or square, the primary transmission component operates and drives the transmission component to operate, so that the primary transmission component and the secondary transmission component operate simultaneously, and drive the two transverse extrusion rollers and the two transverse calibration rollers to operate relative to each other at the same time, and the two vertical extrusion rollers and the two vertical calibration rollers to operate relative to each other at the same time, thereby fixing the steel tube embryo between the two transverse calibration rollers and the two vertical calibration rollers, and making the outer periphery of the steel tube embryo fit with the surface of the two transverse extrusion rollers and the two vertical extrusion rollers;

[0018] When the cross-section of the steel tube embryo is elliptical or rectangular, the control transmission component no longer operates, the first-level transmission component operates, driving the two transverse extrusion rollers and the two transverse calibration rollers to move relative to each other at the same time, and the second-level transmission component operates, driving the two vertical extrusion rollers and the two vertical calibration rollers to move relative to each other at the same time, thereby fixing the steel tube embryo between the two transverse calibration rollers and the two vertical calibration rollers, and making the outer periphery of the steel tube embryo fit with the surface of the two transverse extrusion rollers and the two vertical extrusion rollers.

[0019] Beneficial Effects

[0020] Compared with the prior art, the present invention provides a rolling expansion device and a steel pipe rolling process, which have the following beneficial effects:

[0021] 1. A roller-expanding device and a steel pipe rolling process. Through the setting of a secondary transmission component, two vertical calibration rollers are controlled to move toward each other, thereby driving two vertical extrusion rollers to move toward each other, and then fixing the outer periphery of the steel pipe embryo in the vertical direction. Through the setting of a primary transmission component, two lateral calibration rollers are controlled to move toward each other, thereby driving two lateral extrusion rollers to move toward each other, and then fixing the outer periphery of the steel pipe embryo in the horizontal direction. At the same time, through the setting of a conduction component, the primary transmission component and the secondary transmission component can be controlled to run simultaneously, thereby fixing and positioning the steel pipe embryo, solving the problem that the cylinder has a certain kinetic energy difference, which easily leads to a certain difference in the moving distance of the four rollers, making it difficult for the four rollers to accurately position and fix the steel pipe.

[0022] 2. A rolling expansion device and a steel pipe rolling process. Through the setting of the conductive part, when the device fixes and positions the steel pipe embryo with a circular or square cross-section, the conductive part is located on the outer surface of the extension rod and has a slot portion, so that when the first-level transmission component is in operation, the conductive part operates to drive the second-level transmission component and the first transmission component to operate simultaneously, thereby controlling the two horizontal extrusion rollers and the two vertical extrusion rollers to move relative to each other synchronously, thereby fixing and positioning the steel pipe embryo. When the device fixes and positions the steel pipe embryo with an irregular, elliptical or rectangular cross-section in time, through the setting of the arc surfaces at both ends of the clamping block, the transmission belt moves to the outer surface of the extension rod without the slot portion, so that when the first-level transmission component is in operation, it cannot drive the second-level transmission component to operate, so that the first-level transmission component and the second-level transmission component operate separately and fix the outer surface of the steel pipe embryo. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is one of the structural schematic diagrams of a roller expansion device of the present invention;

[0024] Figure 2 This is a second structural schematic diagram of a roller expansion device of the present invention;

[0025] Figure 3 This is a third structural schematic diagram of a roller expansion device of the present invention;

[0026] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of the middle A part;

[0027] Figure 5 It is a structural schematic diagram of a primary transmission assembly of the present invention;

[0028] Figure 6 This is one of the structural schematic diagrams of the secondary transmission assembly of the present invention;

[0029] Figure 7 For the present invention Figure 6 Schematic diagram of the structure of the middle B part;

[0030] Figure 8 This is the second structural schematic diagram of the secondary transmission assembly of the present invention;

[0031] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure of the middle C part;

[0032] Fig.10 It is a schematic diagram of the structure of the conduction component of the present invention;

[0033] Fig.11 For the present invention Fig.10 Schematic diagram of the structure of the middle D part.

[0034] In the figure: 1, roller press; 2, calibration machine; 3, steel tube embryo; 4, horizontal roller pressing device; 5, vertical roller pressing device; 6, horizontal calibration device; 7, vertical calibration device; 8, primary transmission component; 9, secondary transmission component; 0, transmission component; 41, horizontal extrusion roller; 61, horizontal calibration roller; 51, vertical extrusion roller; 71, vertical calibration roller; 01, transmission component; 11, base; 12, bracket; 13, bearing seat; 14, secondary drive device; 15, fixed seat; 16, sliding seat; 17, primary drive device; 18, support plate; 19, top plate; 20, rectangular seat; 21, right-angle plate; 22, sliding groove; 23, sliding block; 24, sliding groove; 25, sliding block; 81, connecting plate; 82, vertical plate; 83, guide rail; 84, guide block; 85, connecting rod; 86, rectangular plate shaped rod; 87, rotating rod; 88, rectangular plate; 89, threaded rod; 80, first motor; 91, first bidirectional screw; 92, rectangular groove; 93, rectangular block; 94, first gear; 95, first toothed belt; 96, telescopic rod; 97, first tooth groove; 98, second bidirectional screw; 99, extension plate; 90, bearing seat; 911, vertical rod; 912, second gear; 913, second toothed belt; 914, second motor; 915, fourth toothed belt; 916, horizontal plate; 917, movable rod; 918, third tooth groove; 919, third toothed belt; 920, fourth tooth groove; 02, upper extension rod; 03, lower extension rod; 04, worm; 05, worm wheel; 011, transmission belt; 012, extension rod; 013, slot; 014, groove; 015, block; 016, spring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a rolling expansion device and a steel pipe rolling process.

[0037] Example 1: Please refer to Figure 1 - Figure 4A rolling expansion device comprises a rolling machine 1 and a calibration machine 2, a steel tube embryo 3 is placed in the rolling machine 1, a transverse rolling device 4 and a vertical rolling device 5 are arranged on the rolling machine 1, a transverse calibration device 6 and a vertical calibration device 7 are arranged on the calibration machine 2, a primary transmission component 8 is arranged between the transverse rolling device 4 and the transverse calibration device 6, a secondary transmission component 9 is arranged between the vertical rolling device 5 and the vertical calibration device 7, and a conduction component 0 is arranged between the primary transmission component 8 and the secondary transmission component 9;

[0038] The transverse rolling device 4 includes a pair of transverse squeezing rollers 41 placed transversely, and the transverse calibration device 6 includes a pair of transverse calibration rollers 61 placed transversely. The primary transmission assembly 8 drives the pair of transverse squeezing rollers 41 and the pair of transverse calibration rollers 61 to move relative to each other at the same time.

[0039] The vertical rolling device 5 includes a pair of vertical squeezing rollers 51 placed vertically, and the vertical calibration device 7 includes a pair of vertical calibration rollers 71 placed vertically. The secondary transmission assembly 9 drives the pair of vertical squeezing rollers 51 and the pair of vertical calibration rollers 71 to move relative to each other at the same time.

[0040] The transmission component 0 includes a transmission member 01. When the transmission member 01 is in operation, it drives the primary transmission component 8 and the secondary transmission component 9 to operate simultaneously. When the transmission member 01 stops operating, the primary transmission component 8 and the secondary transmission component 9 operate separately.

[0041] Specifically, when the cross section of the steel tube embryo 3 is circular or square, the primary transmission component 8 operates and drives the conduction component 0 to operate, so that the primary transmission component 8 and the secondary transmission component 9 operate simultaneously, and drive the two transverse extrusion rollers 41 and the two transverse calibration rollers 61 to operate relative to each other at the same time, and the two vertical extrusion rollers 51 and the two vertical calibration rollers 71 to operate relative to each other at the same time, thereby fixing the steel tube embryo 3 between the two transverse calibration rollers 61 and the two vertical calibration rollers 71, and making the outer periphery of the steel tube embryo 3 fit the surface of the two transverse extrusion rollers 41 and the two vertical extrusion rollers 51;

[0042] When the cross section of the steel tube embryo 3 is elliptical or rectangular, the control transmission component 0 is no longer running, the primary transmission component 8 is running, driving the two transverse extrusion rollers 41 and the two transverse calibration rollers 61 to move relative to each other at the same time, and the secondary transmission component 9 is running, driving the two vertical extrusion rollers 51 and the two vertical calibration rollers 71 to move relative to each other at the same time, thereby fixing the steel tube embryo 3 between the two transverse calibration rollers 61 and the two vertical calibration rollers 71, and making the outer periphery of the steel tube embryo 3 fit the surface of the two transverse extrusion rollers 41 and the two vertical extrusion rollers 51;

[0043] Through the setting of the secondary transmission component 9, the two vertical calibration rollers 71 are controlled to move towards each other, thereby driving the two vertical extrusion rollers 51 to move towards each other, and then fixing the outer periphery of the steel tube embryo 3 in the vertical direction. Through the setting of the primary transmission component 8, the two transverse calibration rollers 61 are controlled to move towards each other, thereby driving the two transverse extrusion rollers 41 to move towards each other, and then fixing the outer periphery of the steel tube embryo 3 in the horizontal direction. At the same time, through the setting of the conduction component 0, the primary transmission component 8 and the secondary transmission component 9 can be controlled to run simultaneously, so as to fix and position the steel tube embryo 3, which solves the problem that the cylinder has a certain kinetic energy difference, which easily leads to a certain difference in the moving distance of the four rollers, thereby making it difficult for the four rollers to accurately position and fix the steel tube.

[0044] Embodiment 2: The difference from the above embodiment 1 is that, see Figure 1 - Figure 4 For the above-mentioned roller press 1 and calibration machine 2, the roller press 1 is provided with a base 11 and brackets 12 arranged on both sides of the top of the base 11, two bearing seats 13 are slidably arranged in the bracket 12, a pair of vertical squeezing rollers 51 are rotatably connected with the bearing seats 13 through bearings, a secondary driving device 14 is fixedly connected to the bracket 12, and the secondary driving device 14 drives the two vertical squeezing rollers 51 to rotate, a fixed seat 15 is fixedly connected to one side of the top of the base 11, and sliding seats 16 are slidably connected to both sides of the top of the fixed seat 15, a pair of transverse squeezing rollers 41 are rotatably connected with the sliding seat 16 through bearings, and a primary driving device 17 is fixedly connected to the fixed seat 15, and the primary driving device 17 drives the two transverse squeezing rollers 41 to rotate simultaneously;

[0045] Support plates 18 are fixedly connected to both sides of the top of the base 11, a top plate 19 is fixedly connected to the top of the support plates 18, a rectangular seat 20 is fixedly connected between the two support plates 18, and right-angle plates 21 are fixedly connected to the four corners of one side of the rectangular seat 20, and a sliding groove 22 is opened on one side of the vertical part of the four right-angle plates 21, and a sliding block 23 is slidably connected in the sliding groove 22, and both ends of the vertical calibration roller 71 are rotatably connected to the sliding block 23 through bearings, and a sliding groove 24 is opened on one side of the horizontal part of the right-angle plate 21, and a sliding block 25 is slidably connected in the sliding groove 24, and both ends of the horizontal calibration roller 61 are rotatably connected to the sliding block 25 through bearings;

[0046] Specifically, the sliding distance of the sliding block 23 in the sliding groove 22 is the same as the sliding distance of the slider 25 in the sliding groove 24, the sliding distance of the bearing seat 13 on the bracket 12, and the sliding distance of the sliding seat 16 on the fixed seat 15. When the device is reset, the two transverse squeezing rollers 41 and the two vertical squeezing rollers 51 are at the maximum distance. Similarly, the two transverse calibration rollers 61 and the two vertical calibration rollers 71 are at the maximum distance. The primary transmission component 8 controls the two sliding seats 16 to move toward each other, thereby driving the two transverse squeezing rollers 41 to move toward each other, and at the same time controls the two sliders 25 to move toward each other, thereby driving the two transverse calibration rollers 61 to move toward each other. The secondary transmission component 9 controls the two bearing seats 13 to move toward each other, thereby driving the two vertical squeezing rollers 51 to move toward each other, and at the same time controls the two sliding blocks 23 to move toward each other, thereby driving the two vertical calibration rollers 71 to move toward each other.

[0047] Embodiment 3: The difference from the above embodiment 2 is that, see Figure 5 For the above-mentioned primary transmission assembly 8, the primary transmission assembly 8 includes a connecting plate 81, both sides of the top of the fixed seat 15 are fixedly connected with vertical plates 82, the tops of the two vertical plates 82 are fixedly connected with guide rails 83, both sides of the guide rails 83 are slidably connected with guide blocks 84, the top of the transverse extrusion roller 41 is rotatably connected to the guide block 84 through a bearing, both ends of one side of the guide block 84 are fixedly connected with a connecting rod 85, one end of the connecting rod 85 passes through the vertical plate 82 and is fixedly connected to the connecting plate 81, one side of the slider 25 is fixedly connected with a rectangular rod 86, and one end of the rectangular rod 86 is fixedly connected to the connecting plate 81;

[0048] The primary transmission assembly 8 also includes a rotating rod 87, and rectangular plates 88 are fixedly connected on both sides of the support plate 18. The rotating rod 87 is rotatably arranged in the rectangular seat 20 and its two ends extend to the outside of the support plate 18. The two ends of the rotating rod 87 are respectively fixedly connected to threaded rods 89 with opposite thread directions. A right-angle seat is fixedly connected to one side of the rectangular plate 88. One end of the threaded rod 89 is rotatably connected to the right-angle seat through a bearing. One end of one of the right-angle seats is fixedly connected to the first motor 80, and the output end of the first motor 80 is fixedly connected to one end of one of the threaded rods 89.

[0049] Specifically, the first motor 80 drives the threaded rod 89 to rotate, thereby driving the rotating rod 87 to rotate, and then driving the two threaded rods 89 in opposite directions to rotate at the same time. Through the threaded connection between the two connecting plates 81 and the two threaded rods 89 respectively, the two connecting plates 81 are driven to move towards each other. Through the setting of the rectangular rod 86, the two sliders 25 are driven to move relative to each other, thereby driving the two lateral calibration rollers 61 to move relative to each other. At the same time, through the setting of the connecting rod 85, the two guide blocks 84 are driven to move relative to each other, thereby driving the two lateral extrusion rollers 41 to move relative to each other.

[0050] Embodiment 4: The difference from the above embodiment 3 is that, see Figure 6 - Fig. 9 , for the above-mentioned secondary transmission assembly 9; the secondary transmission assembly 9 includes a first bidirectional screw 91, a rectangular groove 92 is opened on the inner side of the bracket 12, and rectangular blocks 93 are fixedly connected on both sides of the bearing seat 13. The rectangular block 93 is slidably arranged in the rectangular groove 92, and the first bidirectional screw 91 is rotatably arranged in the rectangular groove 92 through a bearing and is threadedly connected with the rectangular block 93. A first gear 94 is fixedly connected to the top of the first bidirectional screw 91, and a first toothed belt 95 meshing with the first gear 94 is arranged between the two first gears 94. A telescopic rod 96 is rotatably connected to the top of the inner side of the bracket 12 through a bearing, and the telescopic rod 96 is rotatably connected to the top of one of the bearing seats 13 through a bearing. A first tooth groove 97 is opened at the bottom of the outer periphery of the telescopic rod 96, and the telescopic rod 96 is meshed with the first toothed belt 95 through the first tooth groove 97;

[0051] The secondary transmission assembly 9 also includes a second bidirectional screw 98, an extension plate 99 is fixedly connected to one side of the sliding block 23, an inner groove is opened on one side of the rectangular seat 20, and the extension plate 99 is slidably arranged in the inner groove, the second bidirectional screw 98 is rotatably arranged in the inner groove through a bearing and is threadedly connected to the extension plate 99, a bearing seat 90 is fixedly connected to one side of the support plate 18, a vertical rod 911 is rotatably connected between the two bearing seats 90 through a bearing, the outer periphery of the vertical rod 911 and the top of the second bidirectional screw 98 are fixedly connected to a second gear 912, and the outer periphery of the two second gears 912 is provided with a second toothed belt 913 meshingly connected to the second gear 912, a second motor 914 is fixedly connected to the top of one of the bearing seats 90, and the output end of the second motor 914 is fixedly connected to one end of one of the vertical rods 911;

[0052] The secondary transmission assembly 9 also includes a fourth toothed belt 915, two horizontal plates 916 are slidably connected to one side of the bracket 12, and a movable rod 917 is rotatably connected between the two horizontal plates 916 through a bearing. The outer peripheries of the movable rod 917 and the telescopic rod 96 are provided with third tooth grooves 918, and the outer peripheries of the movable rod 917 and the telescopic rod 96 are sleeved with a third toothed belt 919 meshingly connected with the third tooth grooves 918. The outer peripheries of the movable rod 917 and the vertical rod 911 are provided with fourth tooth grooves 920, and the movable rod 917 and the vertical rod 911 are meshingly connected with the fourth toothed belt 915 through the fourth tooth grooves 920;

[0053] Specifically, the second motor 914 runs, driving the vertical rod 911 to run, and through the fourth tooth groove 920 on the outer periphery of the vertical rod 911 and the second gear 912, the second toothed belt 913 and the fourth toothed belt 915 are driven to rotate simultaneously, and through the meshing connection between the second gear 912 at the top of the second bidirectional screw 98 and the second toothed belt 913, the second bidirectional screw 98 is driven to rotate, and through the threaded connection between the second bidirectional screw 98 and the extension plate 99, the two extension plates 99 are driven to make relative motion, thereby driving the two vertical calibration rollers 71 to make relative motion;

[0054] At the same time, through the meshing connection between the fourth tooth groove 920 on the periphery of the movable rod 917 and the fourth toothed belt 915, when the fourth toothed belt 915 rotates, the movable rod 917 is driven to rotate, and the third toothed belt 919 is driven to rotate through the meshing connection between the third tooth groove 918 on the periphery of the movable rod 917 and the third toothed belt 919, and the telescopic rod 96 is driven to rotate through the meshing connection between the third toothed belt 919 and the third tooth groove 918 on the periphery of the telescopic rod 96, and the first toothed belt 95 is driven to rotate through the meshing connection between the first tooth groove 97 on the periphery of the telescopic rod 96 and the first toothed belt 95, and the two first gears 94 are driven to rotate through the meshing connection between the first toothed belt 95 and the two first gears 94, thereby driving the first bidirectional screw 91 to rotate, and the two rectangular blocks 93 are driven to make relative motion through the meshing connection between the first bidirectional screw 91 and the rectangular block 93, thereby driving the two bearing seats 13 and the vertical extrusion rollers 51 on one side of the two bearing seats 13 to make relative motion.

[0055] Embodiment 5: The difference from the above embodiment 4 is that, see Fig.10 - Fig.11 , for the above-mentioned transmission component 0; the transmission component 0 also includes an upper extension rod 02 and a lower extension rod 03, the upper extension rod 02 is rotatably connected to one side of the support plate 18 through a bearing, one end of the lower extension rod 03 is rotatably connected to the right-angle seat through a bearing and is fixedly connected to one end of the threaded rod 89, the upper extension rod 02 is fixedly connected to the outside of the worm 04, the vertical rod 911 is provided with a worm wheel 05, the worm wheel 05 is meshed with the worm 04, the transmission member 01 includes a transmission belt 011, one end of the upper extension rod 02 and the lower extension rod 03 are fixedly connected to the extension rod 012, the outer side of the extension rod 012 is provided with a plurality of evenly distributed card grooves 013, the transmission belt 011 is provided with a plurality of grooves 014, the groove 014 is slidably connected with a card block 015, the transmission belt 011 is meshed with the card groove 013 through the card block 015, the top of the card block 015 is fixedly connected with a spring 016, and the two ends of the card block 015 are set to be arc surfaces;

[0056] Specifically, when the cross section of the steel tube embryo 3 is circular or square, the primary transmission assembly 8 operates, driving the rotating rod 87 to rotate, thereby driving the lower extension rod 03 and the extension rod 012 fixedly connected to the lower extension rod 03 to rotate, and the engagement connection between the clamping block 015 on the transmission belt 011 and the clamping groove 013 on the outer periphery of the extension rod 012 makes it possible for the lower extension rod 03 to rotate, thereby driving the upper extension rod 02 to rotate, thereby driving the worm 04 to rotate, and through the engagement connection between the worm wheel 05 and the worm wheel 04, driving the worm wheel 05 to rotate, thereby driving the vertical rod 911 to rotate, thereby making the primary transmission assembly 8 and the secondary transmission assembly 9 operate simultaneously;

[0057] When the cross-section of the steel pipe embryo 3 is elliptical or rectangular, the transmission belt 011 is controlled to move to one side on the extension rod 012. The two ends of the block 015 are set to arc surfaces, the block 015 is slidably connected in the groove 014, and the spring 016 is set, so that when the transmission belt 011 moves, the block 015 is received in the groove 014. When the block 015 is completely disengaged from the slot 013, when the lower extension rod 03 rotates, it cannot drive the upper extension rod 02 to rotate, so that the primary transmission component 8 and the secondary transmission component 9 operate separately, and the worm gear 05 is mounted on the vertical rod 911, and there is a certain relative friction between the two, so that when the worm 04 rotates, the worm gear 05 and the vertical rod 911 are driven to rotate at the same time. When the worm 04 does not rotate, the worm gear 05 and the vertical rod 911 rotate relative to each other.

[0058] Example 6: See Figure 1 - Fig.11 This embodiment discloses a steel pipe rolling process, and the specific steps are as follows:

[0059] When the cross section of the steel tube embryo 3 is circular or square, the primary transmission component 8 operates and drives the conduction component 0 to operate, so that the primary transmission component 8 and the secondary transmission component 9 operate simultaneously, and drive the two transverse extrusion rollers 41 and the two transverse calibration rollers 61 to operate relative to each other at the same time, and the two vertical extrusion rollers 51 and the two vertical calibration rollers 71 to operate relative to each other at the same time, thereby fixing the steel tube embryo 3 between the two transverse calibration rollers 61 and the two vertical calibration rollers 71, and making the outer periphery of the steel tube embryo 3 fit the surface of the two transverse extrusion rollers 41 and the two vertical extrusion rollers 51;

[0060] When the cross-section of the steel tube embryo 3 is elliptical or rectangular, the control conduction component 0 no longer runs, the primary transmission component 8 runs, driving the two transverse extrusion rollers 41 and the two transverse calibration rollers 61 to move relative to each other at the same time, and the secondary transmission component 9 runs, driving the two vertical extrusion rollers 51 and the two vertical calibration rollers 71 to move relative to each other at the same time, thereby fixing the steel tube embryo 3 between the two transverse calibration rollers 61 and the two vertical calibration rollers 71, and making the outer periphery of the steel tube embryo 3 fit with the surface of the two transverse extrusion rollers 41 and the two vertical extrusion rollers 51.

[0061] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A roller expansion device, comprising a roller press and a calibration machine, characterized in that: A steel tube embryo is placed in the roller press, a transverse roller press device and a vertical roller press device are arranged on the roller press, a transverse calibration device and a vertical calibration device are arranged on the calibration machine, a primary transmission component is arranged between the transverse roller press device and the transverse calibration device, a secondary transmission component is arranged between the vertical roller press device and the vertical calibration device, and a conduction component is arranged between the primary transmission component and the secondary transmission component; The transverse rolling device includes a pair of transverse squeezing rollers placed transversely, the transverse calibration device includes a pair of transverse calibration rollers placed transversely, and the primary transmission assembly drives the pair of transverse squeezing rollers and the pair of transverse calibration rollers to move relative to each other at the same time; The vertical rolling device includes a pair of vertical squeezing rollers placed vertically, the vertical calibration device includes a pair of vertical calibration rollers placed vertically, and the secondary transmission assembly drives the pair of vertical squeezing rollers and the pair of vertical calibration rollers to move relative to each other at the same time; The transmission component includes a transmission member. When the transmission member is in operation, the primary transmission component and the secondary transmission component are driven to operate simultaneously. When the transmission member stops operating, the primary transmission component and the secondary transmission component are operated separately.

2. The roller expansion device according to claim 1, characterized in that: The roller press is provided with a base and brackets arranged on both sides of the top of the base, two bearing seats are slidably arranged in the bracket, a pair of vertical extrusion rollers are rotatably connected to the bearing seats through bearings, a secondary driving device is fixedly connected to the bracket, and the secondary driving device drives the two vertical extrusion rollers to rotate, a fixed seat is fixedly connected to one side of the top of the base, and sliding seats are slidably connected to both sides of the top of the fixed seat, a pair of transverse extrusion rollers are rotatably connected to the sliding seat through bearings, and a primary driving device is fixedly connected to the fixed seat, and the primary driving device drives the two transverse extrusion rollers to rotate simultaneously.

3. The roller expansion device according to claim 2, characterized in that: Support plates are fixedly connected to the top of the base on both sides, and a top plate is fixedly connected to the top of the support plate. A rectangular seat is fixedly connected between the two support plates, and right-angle plates are fixedly connected at four corners of one side of the rectangular seat. A sliding groove is opened on one side of the vertical parts of the four right-angle plates, and a sliding block is slidably connected in the sliding groove. Both ends of the vertical calibration roller are rotatably connected to the sliding block through bearings, and a sliding groove is opened on one side of the horizontal part of the right-angle plate, and a sliding block is slidably connected in the sliding groove. Both ends of the horizontal calibration roller are rotatably connected to the sliding block through bearings.

4. The roller expansion device according to claim 3, characterized in that: The primary transmission assembly includes a connecting plate, vertical plates are fixedly connected to both sides of the top of the fixed seat, guide rails are fixedly connected to the tops of the two vertical plates, guide blocks are slidably connected to both sides of the guide rails, the top of the transverse extrusion roller is rotatably connected to the guide block through a bearing, connecting rods are fixedly connected to both ends of one side of the guide block, one end of the connecting rod passes through the vertical plate and is fixedly connected to the connecting plate, a rectangular rod is fixedly connected to one side of the slider, and one end of the rectangular rod is fixedly connected to the connecting plate.

5. The roller expansion device according to claim 4, characterized in that: The primary transmission assembly also includes a rotating rod, and rectangular plates are fixedly connected on both sides of the support plate. The rotating rod is rotatably arranged in a rectangular seat and both ends extend to the outside of the support plate. Threaded rods with opposite thread directions are fixedly connected at both ends of the rotating rod, and a right-angle seat is fixedly connected to one side of the rectangular plate. One end of the threaded rod is rotatably connected to the right-angle seat through a bearing, and a first motor is fixedly connected to one end of one of the right-angle seats, and an output end of the first motor is fixedly connected to one end of one of the threaded rods.

6. The roller expansion device according to claim 5, characterized in that: The secondary transmission assembly includes a first bidirectional screw, a rectangular groove is opened on the inner side of the bracket, rectangular blocks are fixedly connected on both sides of the bearing seat, the rectangular blocks are slidably arranged in the rectangular groove, the first bidirectional screw is rotatably arranged in the rectangular groove through a bearing and is threadedly connected to the rectangular block, a first gear is fixedly connected to the top of the first bidirectional screw, a first toothed belt meshing with the first gear is arranged between the two first gears, a telescopic rod is rotatably connected to the top of the inner side of the bracket through a bearing, the telescopic rod is rotatably connected to the top of one of the bearing seats through a bearing, a first tooth groove is opened at the bottom of the outer periphery of the telescopic rod, and the telescopic rod is meshed with the first tooth belt through the first tooth groove.

7. The roller expansion device according to claim 6, characterized in that: The secondary transmission assembly also includes a second bidirectional screw, one side of the sliding block is fixedly connected to an extension plate, one side of the rectangular seat is provided with an inner groove, the extension plate is slidably arranged in the inner groove, the second bidirectional screw is rotatably arranged in the inner groove through a bearing and is threadedly connected to the extension plate, one side of the support plate is fixedly connected to a bearing seat, a vertical rod is rotatably connected between the two bearing seats through a bearing, the outer periphery of the vertical rod and the top of the second bidirectional screw are fixedly connected to a second gear, the outer peripheries of the two second gears are provided with a second toothed belt meshingly connected to the second gear, one of the bearing seats is fixedly connected to the top of a second motor, and the output end of the second motor is fixedly connected to one end of one of the vertical rods.

8. The roller expansion device according to claim 7, characterized in that: The secondary transmission assembly also includes a fourth toothed belt, two horizontal plates are slidably connected to one side of the bracket, a movable rod is rotatably connected between the two horizontal plates through a bearing, a third tooth groove is provided on the outer periphery of the movable rod and the telescopic rod, a third toothed belt meshing with the third tooth groove is sleeved on the outer periphery of the movable rod and the telescopic rod, a fourth tooth groove is provided on the outer periphery of the movable rod and the vertical rod, and the movable rod and the vertical rod are meshingly connected with the fourth toothed belt through the fourth tooth groove.

9. The roller expansion device according to claim 8, characterized in that: The transmission component also includes an upper extension rod and a lower extension rod, the upper extension rod is rotatably connected to one side of the support plate through a bearing, one end of the lower extension rod is rotatably connected to the right-angle seat through a bearing and is fixedly connected to one end of the threaded rod, a worm is fixedly connected to the outside of the upper extension rod, a worm gear is arranged outside the vertical rod, the worm gear is meshed with the worm, the transmission part includes a transmission belt, one end of the upper extension rod and the lower extension rod are fixedly connected to the extension rod, a plurality of evenly distributed card grooves are provided on one side of the outer circumference of the extension rod, a plurality of grooves are provided in the transmission belt, a card block is slidably connected in the groove, the transmission belt is meshed with the card groove through the card block, a spring is fixedly connected to the top of the card block, and both ends of the card block are arranged to be arc surfaces.

10. Steel pipe rolling process, characterized in that: Using a roller expansion device as described in any one of claims 1 to 9, the specific steps are: When the cross section of the steel tube embryo is circular or square, the primary transmission component operates and drives the transmission component to operate, so that the primary transmission component and the secondary transmission component operate simultaneously, and drive the two transverse extrusion rollers and the two transverse calibration rollers to operate relative to each other at the same time, and the two vertical extrusion rollers and the two vertical calibration rollers to operate relative to each other at the same time, thereby fixing the steel tube embryo between the two transverse calibration rollers and the two vertical calibration rollers, and making the outer periphery of the steel tube embryo fit with the surface of the two transverse extrusion rollers and the two vertical extrusion rollers; When the cross-section of the steel tube embryo is elliptical or rectangular, the control transmission component no longer operates, the first-level transmission component operates, driving the two transverse extrusion rollers and the two transverse calibration rollers to move relative to each other at the same time, and the second-level transmission component operates, driving the two vertical extrusion rollers and the two vertical calibration rollers to move relative to each other at the same time, thereby fixing the steel tube embryo between the two transverse calibration rollers and the two vertical calibration rollers, and making the outer periphery of the steel tube embryo fit with the surface of the two transverse extrusion rollers and the two vertical extrusion rollers.

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