Seamless metal composite pipe rolling equipment with multi-fulcrum guide plate adjusting device and method

Abstract

The invention belongs to the technical field of metal processing and forming, and particularly relates to seamless metal composite pipe rolling equipment with a multi-fulcrum guide plate adjusting device and a method. The multi-fulcrum guide plate adjusting device comprises an adjusting hydraulic cylinder, a base end cover, a sliding block seat, a sliding block seat pressing plate, a push rod, a Y-shaped connecting frame, a guide plate, a pin shaft, a pin shaft baffle, a sliding block seat end cover, a locking seat, a locking hydraulic cylinder, a universal coupling and an adjusting rod. The guide plate is accurately controlled through the adjusting hydraulic cylinder and the locking hydraulic cylinder to achieve up-down, autorotation, swinging and other multi-freedom-degree position adjustment, the device can be suitable for rolling processes with different working condition requirements, the guide plate does not need to be replaced many times, rolling can be conducted only by adjusting the guide plate, and after the guide plate works for a long time and is abraded, the service life is prolonged. Abrasion loss can be compensated by adjusting the position of the guide plate, and production efficiency is improved; and meanwhile, the push rod and the adjusting rod are clamped and locked through the locking hydraulic cylinder, and it is guaranteed that the multi-fulcrum guide plate adjusting device has enough strength in the rolling compounding process.

Description

Technical Field

[0001] The invention belongs to the technical field of high-performance tool and die steel processing, and in particular relates to a seamless metal composite pipe rolling device and a method with a multi-support guide plate adjustment device. Background Art

[0002] Bimetallic composite pipes are made by bonding two or more metal pipes with different characteristics together. Compared with traditional nonferrous metal pipes, bimetallic composite pipes have irreplaceable functions in terms of lightweight structure, comprehensive performance, cost reduction and material saving, and have excellent comprehensive performance and economic benefits. Therefore, they are widely used in nuclear power, petrochemical, marine engineering, power electronics, machinery manufacturing, architectural decoration and other fields.

[0003] The three-roller oblique rolling process is a rolling process with local loading and axial continuous forming. It has the characteristics of small rolling force and high production efficiency, which can significantly reduce production and manufacturing costs. In addition, it can achieve the advantages of preparing thin-walled small-diameter to large-diameter thick-walled steel pipes and bars through the cooperation of different types of rollers and mandrels. Therefore, the three-roller oblique rolling process has also become one of the most promising seamless metal composite pipe preparation technologies. The three oblique rollers in the three-roller oblique rolling tube mill are evenly distributed at 120° in space. During the rolling process of the composite pipe, the composite pipe metal undergoes severe plastic deformation, and the metal flows into the roller gap of the three oblique rollers in the space, which is easy to cause the tube mill to get stuck, resulting in serious forming defects such as "tail triangle", which is not conducive to the bonding of the composite pipe. A guide plate device is installed in the middle of the oblique roller. By adjusting the position of the guide plate in space, the flow of metal can be effectively suppressed, so that the outer metal pipe can smoothly pass through the triangular deformation zone, thereby achieving good rolling and bonding of the bimetallic composite pipe.

[0004] Therefore, in order to ensure that the three-roller oblique rolling process produces high-quality bimetallic composite tubes, how to achieve high-precision position adjustment of the guide plate and effectively lock it during the rolling process has become an urgent problem to be solved. Summary of the invention

[0005] In order to solve the deficiencies of the above-mentioned prior art, the present invention aims at the above-mentioned problems and provides a seamless metal composite pipe rolling equipment and method with a multi-pivot guide plate adjustment device. In the multi-pivot guide plate adjustment device, the guide plate is accurately controlled by adjusting the hydraulic cylinder and the locking hydraulic cylinder to realize multi-degree-of-freedom position adjustment such as up and down, rotation and swing, and the locking hydraulic cylinder is used to clamp and lock the push rod and the adjustment rod respectively to ensure that the multi-pivot guide plate adjustment device has sufficient strength during the rolling and compounding process; at the same time, the push rod and the adjustment rod are connected by a universal coupling. During the swing position adjustment of the guide plate, the locking hydraulic cylinder pushes the adjustment rod to rotate around the universal coupling, and the universal coupling is used to compensate for the radial displacement of the adjustment rod. For rolling conditions with different requirements, there is no need to replace the guide plate multiple times. Rolling can be carried out after the guide plate is adjusted, thereby improving production efficiency.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a seamless metal composite pipe rolling equipment with a multi-pivot guide plate adjustment device, which comprises a frame, a roller adjustment hydraulic cylinder, a roller, a four-corner locking hydraulic cylinder, a roller locking hydraulic cylinder, a mandrel, a cover opening hydraulic cylinder and a multi-pivot guide plate adjustment device, wherein the mandrel is arranged in the middle position of the frame, the roller adjustment hydraulic cylinder is evenly distributed on the frame around the axial center line of the mandrel, the roller is installed at the output end of the roller adjustment hydraulic cylinder, the roller locking hydraulic cylinder is connected to the roller, the multi-pivot guide plate adjustment device is evenly distributed on the frame around the axial center line of the mandrel, the four-corner locking hydraulic cylinder is arranged at the four corners of the frame, and the cover opening hydraulic cylinder is arranged in the middle position on both sides of the frame; the multi-pivot guide plate adjustment device comprises an adjusting hydraulic cylinder, a base end cover, a slider seat, a slider seat pressure plate, a push rod, a Y-shaped connecting frame, a guide plate, a pin shaft, a pin shaft baffle, a slider seat end cover, a locking seat, a locking hydraulic cylinder, a universal coupling and an adjusting rod The adjusting hydraulic cylinder is installed on the base end cover, the output shaft of the adjusting hydraulic cylinder is connected to the first end of the push rod, and the push rod passes through the base end cover, the second end of the push rod is connected to the first end of the universal coupling, the second end of the universal coupling is connected to the first end of the adjusting rod, the adjusting rod passes through the end cover of the slider seat, and the second end of the adjusting rod is connected to the Y-shaped connecting frame. The slider seat and the slider seat pressure plate are both provided with locking hydraulic cylinder slot holes, the locking hydraulic cylinder is respectively installed in the locking hydraulic cylinder slot holes, the locking seat is connected to the output shaft of the locking hydraulic cylinder, the slider seat and the slider seat pressure plate are fitted and connected, the base end cover is installed above the slider seat and the slider seat pressure plate, the slider seat end cover is installed below the slider seat and the slider seat pressure plate, the upper end of the guide plate is installed in the groove of the Y-shaped connecting frame through a pin shaft, the pin shaft passes through the through hole of the Y-shaped connecting frame and the pin shaft hole above the guide plate in sequence, and the pin shaft baffle is installed at both ends of the pin shaft and fits with the outer wall of the groove of the Y-shaped connecting frame.

[0008] Preferably, the rollers and the multi-point guide plate adjustment devices are evenly distributed on the frame in an alternating manner around the axial center line of the mandrel.

[0009] Preferably, the number of the adjusting hydraulic cylinder, the push rod, the Y-shaped connecting frame, the pin shaft, the universal coupling and the adjusting rod are two each, and they are symmetrically distributed on both sides of the guide plate.

[0010] Preferably, a pin hole and a pin groove are respectively provided at both ends above the guide plate, and the pin passes through the pin hole and the pin groove respectively and then is connected to the guide plate.

[0011] Preferably, the end of the locking seat is in a semicircular arc shape, and the curvature of the semicircular arc is consistent with the curvature of the outer surface of the push rod and the adjusting rod.

[0012] Preferably, the locking hydraulic cylinder close to the base end cover drives the locking seat to clamp the push rod, and the locking hydraulic cylinder close to the slider seat end cover drives the locking seat to clamp the adjusting rod.

[0013] A second aspect of the present invention provides a rolling method for a seamless metal composite pipe rolling equipment having a multi-support guide plate adjustment device according to the aforementioned method, which comprises the following steps:

[0014] S1. Preparation work before rolling and cladding: close the cover opening hydraulic cylinder, lock the four corner locking hydraulic cylinders, ensure that the frame is in a locked state, start the roller adjustment hydraulic cylinder to adjust the position of the roller according to the diameter of the seamless metal composite pipe, so that the roller gap of the evenly distributed rollers matches the diameter of the seamless metal composite pipe, and then start the roller locking hydraulic cylinder to lock the position of the roller;

[0015] S2. According to the diameter of the seamless metal composite pipe, the position of the guide plate in space is adjusted by a multi-point guide plate adjustment device to ensure that a seamless metal composite pipe with good quality is obtained;

[0016] S21, guide plate up and down position adjustment: start the adjustment hydraulic cylinders on both sides at the same time, the push rod makes reciprocating motion, acts on the Y-type connecting frame through the universal coupling and the adjustment rod, and the guide plate makes reciprocating motion under the action of the Y-type connecting frame, thereby realizing the adjustment of the guide plate up and down position;

[0017] S22. Guide plate rotation position adjustment: according to the actual situation, the adjustment hydraulic cylinders on both sides are started in sequence or the adjustment hydraulic cylinders on both sides are controlled to have differential movement speeds, the push rods on both sides reciprocate according to their respective displacements, act on the Y-shaped connecting frame through the universal coupling and the adjustment rod, the pins slide in the pin slots on the guide plate and push the guide plate to move, the pins on both sides move according to their respective displacements, and the guide plate rotates around the pin holes or pin slots, thereby realizing the adjustment of the guide plate rotation position;

[0018] S23, guide plate swing position adjustment: start the locking hydraulic cylinder close to the end cover of the slider seat, the locking seat performs reciprocating motion, and then pushes the adjustment rod to rotate around the universal coupling, and acts on the guide plate through the Y-type connecting frame. The universal coupling compensates for the radial displacement of the adjustment rod, thereby realizing the adjustment of the guide plate swing position;

[0019] S3. Locking the guide plate position: After completing the guide plate position adjustment in steps S21-S23, start all locking hydraulic cylinders, the locking seat moves, and contacts and cooperates with the surfaces of the push rod and the adjusting rod respectively, thereby clamping and supporting the push rod and the adjusting rod, and locking the guide plate in the space.

[0020] Preferably, during the guide plate position adjustment process, the stroke of the output end of the locking hydraulic cylinder respectively installed on the slider seat and the slider seat pressure plate and close to the base end cover remains consistent.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) Compared with the traditional manual bolt tightening method to adjust the guide plate position, the seamless metal composite pipe rolling equipment with a multi-support guide plate adjustment device of the present invention accurately controls the guide plate to achieve multi-degree-of-freedom position adjustment such as up and down, rotation and swing by adjusting the hydraulic cylinder and the locking hydraulic cylinder. At the same time, the locking hydraulic cylinder is used to clamp and lock the push rod and the adjustment rod respectively, ensuring that the multi-support guide plate adjustment device has sufficient strength during the rolling and compounding process;

[0023] (2) The seamless metal composite pipe rolling equipment with a multi-point guide plate adjustment device of the present invention connects the push rod and the adjustment rod through a universal coupling. During the swing position adjustment of the guide plate, the locking hydraulic cylinder pushes the adjustment rod to rotate around the universal coupling, and the universal coupling is used to compensate for the radial displacement of the adjustment rod, thereby realizing accurate adjustment of the swing position of the guide plate;

[0024] (3) The seamless metal composite pipe rolling equipment with a multi-point guide plate adjustment device of the present invention has strong adaptability and can be applied to rolling processes with different working conditions. For rolling conditions with different requirements, there is no need to replace the guide plate multiple times, and rolling can be carried out after only adjusting the guide plate;

[0025] (4) The seamless metal composite pipe rolling equipment with a multi-point guide plate adjustment device of the present invention can significantly improve production efficiency. As rolling progresses, the guide plates will wear. The multi-point guide plate adjustment device can quickly and efficiently adjust the guide plate position and compensate for the wear of the guide plates, thereby ensuring the production of high-quality seamless metal composite pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1It is a schematic diagram of the overall composition of the seamless metal composite pipe rolling equipment with a multi-support guide plate adjustment device of the present invention;

[0027] Figure 2 It is a spatial arrangement diagram of the rolls and the multi-support guide plate adjustment device of the seamless metal composite pipe rolling equipment with the multi-support guide plate adjustment device of the present invention;

[0028] Figure 3 It is a structural schematic diagram of a multi-support plate adjustment device of a seamless metal composite pipe rolling equipment having a multi-support plate adjustment device from a first perspective of the present invention;

[0029] Figure 4 It is a second perspective structural schematic diagram of a multi-support guide plate adjustment device of a seamless metal composite pipe rolling equipment having a multi-support guide plate adjustment device according to the present invention;

[0030] Figure 5 It is a cross-sectional schematic diagram of a multi-support guide plate adjustment device of a seamless metal composite pipe rolling equipment having a multi-support guide plate adjustment device according to the present invention;

[0031] Figure 6 It is a structural diagram of a slider seat of a seamless metal composite pipe rolling equipment with a multi-support guide plate adjustment device of the present invention;

[0032] Figure 7 It is a structural diagram of a slider seat pressing plate of a seamless metal composite pipe rolling equipment with a multi-support guide plate adjustment device of the present invention;

[0033] Figure 8 It is a structural diagram of a guide plate of a seamless metal composite pipe rolling equipment with a multi-support point guide plate adjustment device of the present invention;

[0034] Fig. 9 It is a schematic diagram of adjusting the guide plate swing position of the seamless metal composite pipe rolling equipment with a multi-support point guide plate adjustment device of the present invention;

[0035] Fig.10 It is a schematic diagram of the guide plate rotation position adjustment of the seamless metal composite pipe rolling equipment with a multi-support point guide plate adjustment device of the present invention;

[0036] Fig.11 A physical picture of the tearing of seamless metal composite tube produced by a conventional three-roller cross-rolling tube mill;

[0037] Fig.12 A physical picture of the torn end of a seamless metal composite tube produced by a conventional three-roller cross-rolling tube mill;

[0038] Fig.13 A physical picture of a seamless metal composite tube produced by a conventional three-roller cross-rolling tube mill with a tail triangle;

[0039] Fig.14A physical picture of the end of a seamless metal composite tube with a tail triangle produced by a conventional three-roller cross-rolling tube mill;

[0040] Fig.15 This is a physical picture of a seamless metal composite tube produced by a conventional three-roller cross-rolling tube mill with a polygonal defect at the tail;

[0041] Fig.16 This is a physical picture of the end of a seamless metal composite tube produced by a conventional three-roller cross-rolling tube mill with a polygonal defect;

[0042] Fig.17 A real picture of a seamless metal composite pipe produced by the seamless metal composite pipe rolling equipment with a multi-support guide plate adjustment device of the present invention;

[0043] Fig.18 This is a physical picture of the end of a seamless metal composite pipe produced by the seamless metal composite pipe rolling equipment with a multi-support guide plate adjustment device of the present invention.

[0044] Main reference numerals:

[0045] 1. Frame; 2. Roller adjustment hydraulic cylinder; 3. Roller; 4. Four-corner locking hydraulic cylinder; 5. Roller locking hydraulic cylinder; 6. Mandrel; 7. Opening hydraulic cylinder; 8. Multi-point guide plate adjustment device; 801. Adjusting hydraulic cylinder; 802. Base end cover; 803. Slider seat; 8031. Locking hydraulic cylinder slot; 804. Slider seat pressure plate; 805. Push rod; 806. Y-type connecting frame; 807. Guide plate; 8071. Pin hole; 8072. Pin slot; 808. Pin; 809. Pin baffle; 810. Slider seat end cover; 811. Locking seat; 812. Locking hydraulic cylinder; 813. Universal coupling; 814. Adjusting rod; 9. Seamless metal composite pipe. DETAILED DESCRIPTION

[0046] In order to fully describe the technical content, objectives and effects of the present invention, the following will be described in detail with reference to the accompanying drawings.

[0047] Seamless metal composite pipe rolling equipment with multi-point guide plate adjustment device, such as Figure 1As shown, it includes a frame 1, a roll adjustment hydraulic cylinder 2, a roll 3, a four-corner locking hydraulic cylinder 4, a roll locking hydraulic cylinder 5, a mandrel 6, a cover opening hydraulic cylinder 7 and a multi-point guide plate adjustment device 8. The mandrel 6 is arranged in the middle of the frame 1. During rolling, the seamless metal composite pipe 9 is sleeved on the mandrel 6. The roll adjustment hydraulic cylinder 2 is evenly distributed on the frame 1 around the axial center line of the mandrel 6. The roll 3 is installed at the output end of the roll adjustment hydraulic cylinder 2. The roll adjustment hydraulic cylinder 2 can be adjusted by starting the roll adjustment hydraulic cylinder 2. The position of the roller 3 is adjusted to adjust the size of the roll gap. The roller locking hydraulic cylinder 5 is connected to the roller 3. Starting the roller locking hydraulic cylinder 5 can lock the roller 3. The multi-point guide plate adjustment device 8 is evenly distributed on the frame 1 around the axial center line of the mandrel 6. The four-corner locking hydraulic cylinders 4 are arranged at the four corners of the frame 1. Starting the four-corner locking hydraulic cylinders 4 can lock the frame 1. The cover opening hydraulic cylinder 7 is arranged in the middle position of both sides of the frame 1. Starting the cover opening hydraulic cylinder 7, the upper part of the frame 1 is opened.

[0048] Furthermore, the rollers 3 and the multi-point guide plate adjustment device 8 are alternately and evenly distributed on the frame 1 around the axial center line of the mandrel 6, as shown in FIG. Figure 2 shown.

[0049] Multi-point guide plate adjustment device 8, such as Figure 3 , Figure 4 and Figure 5 As shown, it includes an adjusting hydraulic cylinder 801, a base end cover 802, a slider seat 803, a slider seat pressure plate 804, a push rod 805, a Y-shaped connecting frame 806, a guide plate 807, a pin shaft 808, a pin shaft baffle 809, a slider seat end cover 810, a locking seat 811, a locking hydraulic cylinder 812, a universal coupling 813 and an adjusting rod 814. The adjusting hydraulic cylinder 801 is installed on the base end cover 802, and the output shaft of the adjusting hydraulic cylinder 801 is connected to the push rod The first end of the push rod 805 is connected, and the push rod 805 passes through the base end cover 802, the second end of the push rod 805 is connected to the first end of the universal coupling 813, the second end of the universal coupling 8013 is connected to the first end of the adjusting rod 814, the adjusting rod 814 passes through the slider seat end cover 810, and the second end of the adjusting rod 814 is connected to the Y-shaped connecting frame 806, the slider seat 803 and the slider seat pressure plate 804 are both provided with a locking hydraulic cylinder slot hole 8031, as shown in FIG. Figure 6 and Figure 7As shown, the locking hydraulic cylinder 812 is respectively installed in the locking hydraulic cylinder slot hole 8031, the locking seat 811 is connected to the output shaft of the locking hydraulic cylinder 812, the end of the locking seat 811 is semicircular, and the curvature of the semicircular is consistent with the curvature of the outer surface of the push rod 805 and the adjusting rod 814, the locking hydraulic cylinder 812 close to the base end cover 802 drives the locking seat 811 to clamp the push rod 805, and the locking hydraulic cylinder 812 close to the slider seat end cover 810 drives the locking seat 811 to clamp the adjusting rod 814, the slider seat 803 and the slider seat pressure plate 804 are fitted and connected, the base end cover 802 is installed above the slider seat 803 and the slider seat pressure plate 804, the slider seat end cover 810 is installed below the slider seat 803 and the slider seat pressure plate 804, and the two ends above the guide plate 807 are respectively provided with a pin shaft hole 8071 and a pin shaft groove 8072, as shown in FIG. Figure 8 As shown, the pin 808 passes through the pin hole 8071 and the pin groove 8072 respectively to install the guide plate 807 in the groove of the Y-shaped connecting frame 806. The pin 808 can slide in the pin groove 8072. When the adjusting hydraulic cylinder 801 drives the adjusting rod 814 to move, the guide plate 807 can rotate around the pin hole 8071 or the pin groove 8072. The pin baffle 809 is installed at both ends of the pin 808 and fits with the outer wall of the groove of the Y-shaped connecting frame 806.

[0050] Furthermore, the number of the adjusting hydraulic cylinder 801 , the push rod 805 , the Y-shaped connecting frame 806 , the pin shaft 808 , the universal coupling 813 and the adjusting rod 814 is two, and they are symmetrically distributed on both sides of the guide plate 807 .

[0051] The guide plate 807 of the multi-point guide plate adjustment device 8 is swung to adjust the position, such as Fig. 9 As shown, the locking hydraulic cylinder 812 below drives the locking seat 811 to push the adjusting rod 814 to rotate around the universal coupling 813, and the guide plate 807 also rotates with the adjusting rod 814 to achieve swing position adjustment.

[0052] The guide plate 807 of the multi-point guide plate adjustment device 8 is adjusted in rotation position, such as Fig.10 As shown, the movement speeds of the adjusting hydraulic cylinders 801 on both sides are inconsistent, and the push rods 805 on both sides make reciprocating motions, but the displacements are inconsistent. Through the universal coupling 813 and the adjusting rod 814, the Y-shaped connecting frame 806 is acted on, and the pin shaft 808 slides in the pin shaft groove 8072 on the guide plate 807 and pushes the guide plate 807 to move. The displacements of the pin shafts 808 on both sides are inconsistent, and the guide plate 807 rotates around the pin shaft hole 8071 or the pin shaft groove 8072 to realize the rotation position adjustment.

[0053] In the process of rolling the composite tube in the traditional three-roller oblique tube mill, the metal of the composite tube undergoes severe plastic deformation, and the metal flows into the roller gap of the three oblique rollers 3 in the space, which easily causes the tube mill to get stuck, resulting in serious forming defects such as "tail triangle", such as Fig.11 and Fig.12 The tail triangle effect shown in FIG. 1 seriously causes the tearing of the seamless metal composite tube 9, as shown in FIG. Fig.13 and Fig.14 The tail triangle shown in the figure seriously causes the seamless metal composite pipe 9 produced by the pipe rolling mill to be stuck. Fig.15 and Fig.16 The tail triangle shown in the figure causes the seamless metal composite pipe 9 to be rolled out of round; before the seamless metal composite pipe 9 passes through the mandrel 6 and starts rolling, the roll gap of the roll 3 is adjusted by the roll adjustment hydraulic cylinder 2, and the roll locking hydraulic cylinder 5 is used to lock it. The guide plate 807 extends into the roll gap, and the position of the guide plate 807 is adjusted so that the guide plate 807 and the roll 3 are configured into a hole shape in the rolling area, and the guide plate 807 is locked, so that the seamless metal composite pipe 9 can pass the rolling smoothly, the interface is well bonded, and the roundness is good, as shown in FIG. Fig.17 and Fig.18 .

[0054] The rolling method of a seamless metal composite pipe rolling equipment with a multi-support guide plate adjustment device according to the present invention is further described below, which includes the following steps:

[0055] S1. Preparation work before rolling and cladding: close the cover opening hydraulic cylinder 7, lock the four corner locking hydraulic cylinders 4, ensure that the frame 1 is in a locked state, start the roller adjustment hydraulic cylinder 2 to adjust the position of the roller 3 according to the diameter of the seamless metal composite pipe 9, so that the evenly distributed roller gap of the roller 3 matches the diameter of the seamless metal composite pipe 9, and then start the roller locking hydraulic cylinder 5 to lock the position of the roller 3.

[0056] S2. Position adjustment of the guide plate 807: According to the diameter of the seamless metal composite pipe 6, the position of the guide plate 807 in space is adjusted by the multi-support point guide plate adjustment device 8 to ensure that a seamless metal composite pipe 9 with good quality is obtained.

[0057] S21, adjusting the upper and lower positions of the guide plate 807: start the adjusting hydraulic cylinders 801 on both sides at the same time, the push rod 805 performs reciprocating motion, and acts on the Y-shaped connecting frame 806 through the universal coupling 813 and the adjusting rod 814. The guide plate 807 performs reciprocating motion under the action of the Y-shaped connecting frame 806, thereby realizing the adjustment of the upper and lower positions of the guide plate 807.

[0058] S22. Adjustment of the rotation position of the guide plate 807: according to the actual situation, start the adjusting hydraulic cylinders 801 on both sides in turn or control the adjusting hydraulic cylinders 801 on both sides to have inconsistent movement speeds. The push rods 805 on both sides make reciprocating motions, but the displacements are inconsistent. The universal joint 813 and the adjusting rod 814 act on the Y-shaped connecting frame 806, and the pin 808 slides in the pin groove 8072 on the guide plate 807 and pushes the guide plate 807 to move. The displacements of the pins 808 on both sides are inconsistent, and the guide plate 807 rotates around the pin hole 8071 or the pin groove 8072, thereby realizing the adjustment of the rotation position of the guide plate 807.

[0059] S23, adjusting the swing position of the guide plate 807: start the locking hydraulic cylinder 812 close to the end cover 802 of the slider seat, and the locking seat 811 performs reciprocating motion, thereby pushing the adjusting rod 814 to rotate around the universal coupling 813, and acting on the guide plate 807 through the Y-shaped connecting frame 806. The universal coupling 813 compensates for the radial displacement of the adjusting rod 814, thereby realizing the adjustment of the swing position of the guide plate 807.

[0060] S3. Locking the position of the guide plate 807: After completing the position adjustment of the guide plate 807 in steps S21-S23, start all the locking hydraulic cylinders 812, and the locking seat 811 moves and contacts and cooperates with the surfaces of the push rod 805 and the adjusting rod 814 respectively, thereby clamping and supporting the push rod 805 and the adjusting rod 814, and locking the position of the guide plate 807 in space.

[0061] Furthermore, during the position adjustment process of the guide plate 807, the stroke of the output end of the locking hydraulic cylinder 812 respectively installed on the slider seat 803 and the slider seat pressure plate 804 and close to the base end cover 802 always remains consistent, ensuring that the push rod 805 is coaxial with the adjusting hydraulic cylinder 801.

[0062] The embodiments described above are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A seamless metal composite pipe rolling equipment with a multi-point guide plate adjustment device, characterized in that: It includes a frame, a roller adjustment hydraulic cylinder, a roller, a four-corner locking hydraulic cylinder, a roller locking hydraulic cylinder, a mandrel, a cover opening hydraulic cylinder and a multi-support guide plate adjustment device. The mandrel is arranged in the middle of the frame, the roller adjustment hydraulic cylinder is evenly distributed on the frame around the axial center line of the mandrel, the roller is installed at the output end of the roller adjustment hydraulic cylinder, the roller locking hydraulic cylinder is connected to the roller, the multi-support guide plate adjustment device is evenly distributed on the frame around the axial center line of the mandrel, the four-corner locking hydraulic cylinder is arranged at the four corners of the frame, and the cover opening hydraulic cylinder is arranged in the middle of both sides of the frame; The multi-point guide plate adjustment device includes an adjusting hydraulic cylinder, a base end cover, a slider seat, a slider seat pressure plate, a push rod, a Y-shaped connecting frame, a guide plate, a pin shaft, a pin shaft baffle, a slider seat end cover, a locking seat, a locking hydraulic cylinder, a universal coupling and an adjusting rod. The adjusting hydraulic cylinder is installed on the base end cover, the output shaft of the adjusting hydraulic cylinder is connected to the first end of the push rod, and the push rod passes through the base end cover, the second end of the push rod is connected to the first end of the universal coupling, the second end of the universal coupling is connected to the first end of the adjusting rod, the adjusting rod passes through the slider seat end cover, and the second end of the adjusting rod is connected to the Y-shaped connecting rod The frame is connected, the slider seat and the slider seat pressure plate are both provided with locking hydraulic cylinder slots, the locking hydraulic cylinders are respectively installed in the locking hydraulic cylinder slots, the locking seat is connected to the output shaft of the locking hydraulic cylinder, the slider seat and the slider seat pressure plate are fitted and connected, the base end cover is installed above the slider seat and the slider seat pressure plate, the slider seat end cover is installed below the slider seat and the slider seat pressure plate, the upper end of the guide plate is installed in the groove of the Y-type connecting frame through a pin shaft, the pin shaft passes through the through hole of the Y-type connecting frame and the pin shaft hole above the guide plate in turn, the pin shaft baffles are installed at both ends of the pin shaft, and fit with the outer wall of the groove of the Y-type connecting frame.

2. A seamless metal composite pipe rolling equipment with a multi-support guide plate adjustment device according to claim 1, characterized in that: The rollers and the multi-support guide plate adjustment devices are alternately and evenly distributed on the frame around the axial center line of the core rod.

3. The seamless metal composite pipe rolling equipment with a multi-point guide plate adjustment device according to claim 1, characterized in that: The number of the adjusting hydraulic cylinder, the push rod, the Y-type connecting frame, the pin shaft, the universal coupling and the adjusting rod are two, and they are symmetrically distributed on both sides of the guide plate.

4. The seamless metal composite pipe rolling equipment with a multi-point guide plate adjustment device according to claim 1, characterized in that: A pin shaft hole and a pin shaft groove are respectively arranged at two ends above the guide plate, and the pin shaft is connected with the guide plate after passing through the pin shaft hole and the pin shaft groove respectively.

5. The seamless metal composite pipe rolling equipment with a multi-support guide plate adjustment device according to claim 1, characterized in that: The end of the locking seat is in a semicircular arc shape, and the curvature of the semicircular arc is respectively consistent with the curvature of the outer surface of the push rod and the adjusting rod.

6. The seamless metal composite pipe rolling equipment with a multi-point guide plate adjustment device according to claim 1, characterized in that: The locking hydraulic cylinder close to the end cover of the base drives the locking seat to clamp the push rod, and the locking hydraulic cylinder close to the end cover of the slider seat drives the locking seat to clamp the adjusting rod.

7. A rolling method for a seamless metal composite pipe rolling equipment with a multi-point guide plate adjustment device according to any one of claims 1 to 6, characterized in that: It includes the following steps: S1. Preparation work before rolling and cladding: close the cover opening hydraulic cylinder, lock the four corner locking hydraulic cylinders, ensure that the frame is in a locked state, start the roller adjustment hydraulic cylinder to adjust the position of the roller according to the diameter of the seamless metal composite pipe, so that the roller gap of the evenly distributed rollers matches the diameter of the seamless metal composite pipe, and then start the roller locking hydraulic cylinder to lock the position of the roller; S2. According to the diameter of the seamless metal composite pipe, the position of the guide plate in space is adjusted by a multi-point guide plate adjustment device to ensure that a seamless metal composite pipe with good quality is obtained; S21, guide plate up and down position adjustment: start the adjustment hydraulic cylinders on both sides at the same time, the push rod makes reciprocating motion, acts on the Y-type connecting frame through the universal coupling and the adjustment rod, and the guide plate makes reciprocating motion under the action of the Y-type connecting frame, thereby realizing the adjustment of the guide plate up and down position; S22. Guide plate rotation position adjustment: according to the actual situation, the adjustment hydraulic cylinders on both sides are started in sequence or the adjustment hydraulic cylinders on both sides are controlled to have differential movement speeds, the push rods on both sides reciprocate according to their respective displacements, act on the Y-shaped connecting frame through the universal coupling and the adjustment rod, the pins slide in the pin slots on the guide plate and push the guide plate to move, the pins on both sides move according to their respective displacements, and the guide plate rotates around the pin holes or pin slots, thereby realizing the adjustment of the guide plate rotation position; S23, guide plate swing position adjustment: start the locking hydraulic cylinder close to the end cover of the slider seat, the locking seat performs reciprocating motion, and then pushes the adjustment rod to rotate around the universal coupling, and acts on the guide plate through the Y-type connecting frame. The universal coupling compensates for the radial displacement of the adjustment rod, thereby realizing the adjustment of the guide plate swing position; S3. Locking the guide plate position: After completing the guide plate position adjustment in steps S21-S23, start all locking hydraulic cylinders, the locking seat moves, and contacts and cooperates with the surfaces of the push rod and the adjusting rod respectively, thereby clamping and supporting the push rod and the adjusting rod, and locking the guide plate in the space.

8. A seamless metal composite pipe rolling method with a multi-support guide plate adjustment device according to claim 7, characterized in that: During the process of adjusting the position of the guide plate, the stroke of the output end of the locking hydraulic cylinder respectively installed on the slider seat and the slider seat pressure plate and close to the base end cover is always consistent.

Images