High-speed rolling mill

Abstract

This invention discloses a high-speed rolling mill, belonging to the field of pipe processing equipment, which improves the processing speed of pipes. The high-speed rolling mill of this invention includes: a frame; a rolling mill head mounted on the frame for rolling pipes; a mandrel disposed on the frame for guiding pipe conveying; a mandrel support and a pipe support disposed on the frame for supporting the mandrel; a top-feeding trolley slidably mounted on the frame for pushing the pipe towards the rolling mill head; and multiple mandrel clamping devices for limiting the axial and radial displacement of the mandrel during pipe conveying and processing. The top-feeding trolley can push the mandrel support to rotate axially within the pipe. The mandrel clamping devices include grippers that can clamp or release the mandrel and lifting cylinders that control the lifting and lowering of the grippers to avoid affecting the movement of the top-feeding trolley.

Description

[Technical Field]

[0001] This invention relates to the field of pipe processing equipment, and more particularly to high-speed rolling mills. [Background Technology]

[0002] During pipe rolling, the mill head typically processes and drags the pipe simultaneously, resulting in a relatively low processing speed. If the mill head exerts a large traction force on the pipe, it will affect the quality of the pipe during the rolling process. Therefore, the feeding speed of the pipe on the stand can be increased, but the stability of the pipe during the feeding process must be maintained. [Summary of the Invention]

[0003] The technical problem to be solved by this invention is to overcome the shortcomings of the prior art by proposing a high-speed rolling mill to improve the processing speed of pipes.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A high-speed rolling mill includes: a frame; a rolling mill head mounted on the frame for rolling tubes; a mandrel mounted on the frame for guiding tube transport; a mandrel support and a tube support mounted on the frame for supporting the mandrel; a top-feeding trolley slidably mounted on the frame for pushing the tubes toward the rolling mill head; and multiple mandrel clamping devices for limiting the axial and radial displacement of the mandrel during tube transport and processing; wherein the top-feeding trolley can push the mandrel support to rotate axially in the tube, and the mandrel clamping devices include grippers that can clamp or release the mandrel and lifting cylinders that control the lifting and lowering of the grippers to avoid affecting the movement of the top-feeding trolley.

[0006] Furthermore, the bottom of the top conveying trolley is provided with a pusher, which abuts against the end of the tube to push the tube along the core rod. The pusher is provided with a through hole with a diameter larger than that of the core rod. When the pusher pushes the tube to move, the through hole is coaxial with the core rod.

[0007] Furthermore, the pusher is rotatably mounted at the bottom of the top conveying trolley, and the pusher can flip up and down relative to the top conveying trolley. The bottom of the top conveying trolley is provided with a stop, which prevents the pusher from flipping when the pusher pushes the pipe to move.

[0008] Furthermore, the core rod support includes a fixed seat disposed on the frame and a support seat rotatably mounted on the fixed seat for supporting the core rod. The support seat can be flipped up and down relative to the fixed seat. The support seat has a protruding lever on its side. The fixed seat has a limiting seat that can abut against the support seat to limit the flipping angle and flipping direction of the support seat. There are multiple core rod supports, which are divided into first support members and second support members. The first support members and second support members have opposite flipping directions and are distributed at intervals along the length direction of the frame.

[0009] Furthermore, the bottom of the top-feeding trolley is provided with a pusher that resets or flips the core rod support during the movement of the top-feeding trolley. There are two pushers, namely a first push plate and a second push plate, which are set at both ends of the top-feeding trolley in the direction of pipe movement. When the top-feeding trolley pushes the pipe to move, the first push plate resets the first support to support the core rod. When the top-feeding trolley resets, the first push plate pushes down the first support to facilitate the movement of the top-feeding trolley, and the second push plate resets the second support to support the core rod.

[0010] Furthermore, the core rod clamping device also includes a drive component for controlling the gripper to clamp or release the core rod. The gripper comprises two clamping arms hinged together, and the ends of the clamping arms are provided with clamping hoops for clamping the core rod.

[0011] Furthermore, the rolling mill head includes a planetary carrier, a plurality of rolling heads disposed within the planetary carrier, and a power device for driving the plurality of rolling heads to rotate in order to roll the pipe. The planetary carrier is provided with rotating bevel teeth and revolving bevel teeth on its outer periphery. The rotating bevel teeth are used to control the rotation of the plurality of rolling heads, and the revolving bevel teeth are used to control the revolution of the plurality of rolling heads around the pipe.

[0012] Furthermore, the rolling head is provided with a first rotating shaft. The rolling head includes a base and a pressure cap disposed at the end of the base. The first rotating shaft passes through the base and connects to the rolling head. The pressure cap is provided with an annular groove. A connecting plate is provided on the side of the rolling head facing the pressure cap. An adjusting shim that abuts against the connecting plate is placed in the annular groove.

[0013] Furthermore, the end of the frame is also provided with a roller feeding device for conveying pipes onto the frame, and a pipe straightening device is provided in front of the roller feeding device for quickly straightening the pipes before they are conveyed to the frame.

[0014] Furthermore, the pipe straightening device includes two support seats and a straightening frame rotatably mounted between the two support seats. The straightening frame is provided with multiple straightening rollers for straightening the pipe. The multiple straightening rollers are divided into multiple groups and spaced apart along the axial direction of the pipe. Each group of straightening rollers includes two corresponding straightening rollers, one above the other, and the distance between the two straightening rollers in each group is the same. The distance between two adjacent straightening rollers in the axial direction of the pipe is the same. Each straightening roller includes a roller seat fixedly mounted in the straightening space and a roller rotatably mounted on the roller seat. In each group of straightening rollers, the center of the lower roller is closer to the frame.

[0015] The beneficial effects of this invention are:

[0016] This invention proposes a high-speed rolling mill capable of processing tubes at high speed. The top-feed trolley increases the tube's conveying speed, thereby increasing processing speed. The mandrel support is flip-up and supports the mandrel, maintaining its horizontal position. During tube conveying, the tube follows the mandrel, which is located inside the tube during conveying and processing. If the tube were supported solely by the mandrel support, its axis would be too high, hindering processing. Therefore, the flip-up mandrel support prevents contact between the tube and the support, ensuring the tube's axis is centered at the mill head's processing station, thus guaranteeing tube quality.

[0017] The rotation of the mandrel support is controlled by the top conveying trolley. This ensures that the mandrel support does not affect the movement of the top conveying trolley during its movement. As the top conveying trolley moves and pushes the pipe, the mandrel clamping device clamps the mandrel with its grippers to prevent axial displacement and also restricts radial displacement. When the pipe passes by, the grippers can release the mandrel and move downward under the action of the lifting cylinder to avoid the pipe or the top conveying trolley, thus not affecting the pipe conveying or the movement of the top conveying trolley. Multiple mandrel clamping devices can clamp different parts of the mandrel to ensure that at least one mandrel clamping device can clamp the mandrel at the same time, preventing axial positional changes in the mandrel.

[0018] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0019] The invention will be further described below with reference to the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the high-speed rolling mill in an embodiment of the present invention;

[0021] Figure 2 This is a partial top view of the frame in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the rolling mill head in an embodiment of the present invention;

[0023] Figure 4 This is a front view of the rolling mill head in an embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of the rolling mill head in an embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional view of the planetary carrier in an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the core rod clamping device in an embodiment of the present invention;

[0027] Figure 8 This is a side view of the core rod clamping device in an embodiment of the present invention;

[0028] Figure 9 This is a schematic diagram of the top-feeding trolley in an embodiment of the present invention;

[0029] Figure 10 This is a top view of the top-feeding trolley in an embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram of the core rod support component in an embodiment of the present invention;

[0031] Figure 12 This is a side view of the core rod support member in an embodiment of the present invention;

[0032] Figure 13 This is a schematic diagram of the pipe support component in an embodiment of the present invention;

[0033] Figure 14 This is a schematic diagram of the structure of the adjustment component in an embodiment of the present invention;

[0034] Figure 15 This is a schematic diagram of the auxiliary device in an embodiment of the present invention;

[0035] Figure 16 This is a schematic diagram of the pipe straightening device in an embodiment of the present invention.

[0036] Figure label:

[0037] Frame 100, core rod 110;

[0038] Rolling mill head 200, planetary carrier 210, rotating bevel gear 211, revolving bevel gear 212, pipe conveying channel 213, installation station 214, rolling head 220, base body 221, pressure cap 222, rolling head 223, annular groove 224, connecting plate 225, adjusting shim 226, power unit 230, first cylindrical gear 240, second cylindrical gear 241, first rotating shaft 242, first bevel gear 243, second rotating shaft 244, second bevel gear 245;

[0039] Core rod support 300, first support 301, second support 302, fixed seat 310, support seat 320, lever 330, limit seat 340, spring 350;

[0040] Pipe support 400, support base 410, rotating wheel 420, adjusting component 430, C-shaped connecting rod 431, tie rod 432, swing arm 433, power component 434;

[0041] Top-feeding trolley 500, pusher component 510, through hole 511, pusher component 520, first pusher plate 5201, second pusher plate 5202, plate body 521, limit block 522;

[0042] Core rod clamping device 600, gripper 610, clamping arm 611, clamping hoop 612, lifting cylinder 620, driving component 630, driving cylinder 631, connecting rod 632, pad plate 633, mounting plate 640;

[0043] Auxiliary device 700, machine body 710, rotation aid device 720, motor 721, upper friction wheel 722, lower friction wheel 723, clamping device 730, shaft 731, chuck 732, rotating seat 740, driving component 750, adjusting cylinder 760;

[0044] Roller feeding device 800;

[0045] Pipe straightening device 900, support 910, straightening frame 920, pipe inlet 921, pipe outlet 922, straightening space 923, straightening roller 930, roller seat 931, roller 932, drive device 940.

Detailed Implementation Methods

[0046] The technical solutions of the embodiments of the present invention will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0047] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more, unless explicitly defined otherwise.

[0049] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] Reference Figures 1 to 16This invention discloses a high-speed rolling mill capable of rapidly processing tubes, comprising: a frame 100; a rolling mill head 200 mounted on the frame 100 for rolling tubes; a mandrel 110 mounted on the frame 100 for guiding tube transport; a mandrel support 300 and a tube support 400 mounted on the frame 100 for supporting the mandrel 110; a top-feeding trolley 500 slidably mounted on the frame 100 for pushing the tubes toward the rolling mill head 200; and multiple mandrel clamping devices 600 for limiting the axial and radial displacement of the mandrel 110 during tube transport and processing; wherein the tube support 400 can rotate axially over the tube, and the mandrel clamping device 600 includes a gripper 610 capable of clamping or releasing the mandrel 110 and a lifting cylinder 620 for controlling the lifting and lowering of the gripper 610 to avoid affecting the movement of the top-feeding trolley 500.

[0052] The high-speed rolling mill can process tubes at high speed. The top conveying trolley 500 can increase the tube conveying speed, thereby increasing the tube processing speed. The mandrel support 300 is flip-up and is used to support the mandrel 110 and keep it horizontal. The tube needs to be conveyed along the mandrel 110. During tube conveying and processing, the mandrel 110 is located inside the tube. If the tube is supported by the mandrel support 300, its axis position will be too high, which is not conducive to tube processing. Therefore, the flip-up mandrel support 300 can prevent the tube from contacting the mandrel support 300, so that the axis of the tube to be processed is located at the center of the processing station of the rolling mill head 200, ensuring the quality of the tube.

[0053] The rotation of the core rod support 300 is controlled by the top conveying trolley 500. This ensures that the core rod support 300 does not affect the movement of the top conveying trolley 500 during its movement. As the top conveying trolley 500 moves and pushes the pipe, the core rod clamping device 600 clamps the core rod 110 with the gripper 610 to prevent axial displacement and also restricts radial displacement. When the pipe passes by, the gripper 610 can release the core rod 110 and move downward under the action of the lifting cylinder 620 to avoid the pipe or the top conveying trolley 500, thus not affecting the pipe conveying and the movement of the top conveying trolley 500. Multiple core rod clamping devices 600 can clamp different parts of the core rod 110 to ensure that at least one core rod clamping device 600 can clamp the core rod 110 at the same time, preventing axial positional changes in the core rod 110.

[0054] In the above-mentioned configuration, the bottom of the top conveying trolley 500 is equipped with a pusher 510. The top conveying trolley 500 pushes the pipe by abutting against the end of the pipe, thereby increasing its conveying speed, instead of clamping the pipe. This reduces damage to the pipe. The pusher 510 has a through hole 511, which is actually shaped like a sleeve. When pushing the pipe, the through hole 511 is coaxial with the core rod 110, and the diameter of the through hole 511 is larger than the diameter of the core rod 110. In this way, when the top conveying trolley 500 pushes the pipe, the pusher 510 can abut against the circumferential end of the pipe. The core rod 110 passes through the through hole 511 of the pusher 510, thus not affecting the movement of the pusher 510. This increases the contact area between the pusher 510 and the pipe, allowing the pipe to move stably.

[0055] During the pipe processing, the pipe needs to be moved to the outer periphery of the core rod 110. However, the pusher 510 will block the pipe from moving toward the core rod 110. Therefore, the pusher 510 has the function of being able to flip up and down relative to the top conveying trolley 500. The pusher 510 is rotatably installed at the bottom of the top conveying trolley 500. When the pipe moves toward the core rod 110, the pipe can contact the pusher 510 and push the pusher 510 to flip upward, so that the pusher 510 will not block the pipe.

[0056] The rolling mill head 200 includes a planetary carrier 210, multiple rolling heads 220 disposed within the planetary carrier 210, and a power unit 230 for driving the multiple rolling heads 220 to rotate and roll the pipe. The planetary carrier 210 is provided with a rotating bevel gear 211 and a revolving bevel gear 212 on its outer periphery. The rotating bevel gear 211 is used to control the rotation of the multiple rolling heads 220, and the revolving bevel gear 212 is used to control the revolving of the multiple rolling heads 220 around the pipe. The planetary carrier 210 is provided with a pipe conveying channel 213, and the machine body 710 is provided with multiple installation stations 214 distributed around the pipe conveying channel 213. The multiple installation stations 214 are connected to the pipe conveying channel 213 for installing the rolling heads 220.

[0057] The rolling mill head 200 is used to process pipes, reducing the inner diameter, outer diameter, and wall thickness of the pipes, and increasing the length of the pipes. Multiple rolling heads 220 process the pipes. The planetary carrier 210 rotates via a revolving bevel gear 212, allowing the multiple rolling heads 220 to rotate around the pipe, uniformly processing its outer circumference and ensuring the quality of the finished product. The rotation of each rolling head 220 is controlled by a rotating gear. Thus, during pipe processing, the multiple rolling heads 220 not only rotate around the pipe to process its outer circumference but also rotate simultaneously for better processing. If the rolling heads 220 do not rotate, the wear on the contact surface with the pipe will be excessive. Furthermore, the planetary carrier 210 has multiple mounting stations 214 for installing the rolling heads 220. The rolling heads 220 are installed in the mounting stations 214, which maintain the position of the rolling heads 220 during pipe processing without requiring adjustment of the relative angle with the pipe.

[0058] The position of the installation station 214 remains unchanged, so that the angle between the rolled head 220 and the pipe after installation is a fixed angle, so no adjustment is required, making it more convenient to use, and the angle will not change during use.

[0059] Furthermore, the angle between the axis of each installation station 214 and the axis of the pipe conveying channel 213 is the same, and the spacing between two adjacent rolling heads 220 is the same. This ensures that the angle between the rolling head 220 installed on the planetary carrier 210 and the pipe to be processed is the same, resulting in a more uniform wall thickness and better quality of the processed pipe. The force exerted on the pipe by the rolling head 220 during processing is also more uniform, and the pipe will not deform during processing. Even if the pipe is conveyed at a high speed, the rolling mill head 200 can complete the rolling of the pipe at a faster speed.

[0060] During the pipe conveying and processing, the part of the core rod 110 without pipe is supported by the core rod support 300, and the part with pipe is supported by the pipe support 400. The height of the pipe support 400 is lower than the height of the core rod support 300. In this way, when the core rod support 300 is flipped, it can be supported by the pipe support 400. The bottom of the top conveying trolley 500 is provided with a pusher 520. The pusher 520 contacts the core rod support 300 during the movement of the top conveying trolley 500 to control the reset or flipping of the core rod support 300. Thus, the core rod support 300 will not affect the pushing of the pipe by the pusher 510.

[0061] Reference Figure 5Based on the above embodiments, this embodiment specifically describes the structure of the rolling head 220. Specifically, the rolling head 220 includes a base 221, a pressure cap 222 disposed at the end of the base 221, and a rolling head 223. The pressure cap 222 is provided with an annular groove 224, and the rolling head 223 is provided with a connecting plate 225 on the side facing the pressure cap 222. An adjusting shim 226 that abuts against the connecting plate 225 is placed in the annular groove 224.

[0062] The angle between the centerline of the rolling head 220 and the centerline of the pipe will not change. When processing pipes of different specifications, it is also necessary to adjust the distance between the rolling head 220 and the pipe. By changing the type of the adjusting shim 226, the distance between the pressure cap 222 and the connecting plate 225 can be adjusted, thereby adjusting the distance between the rolling head 223 and the pipe.

[0063] During the pipe conveying process, there is frequent contact between the pipe and the mandrel. The mandrel, as a component guiding the pipe conveying, is positioned by the mandrel clamping device, preventing positional changes that could affect the pipe processing. (Refer to...) Figure 7 and 8 In another embodiment of the present invention, the gripper 610 comprises two gripping arms 611 hinged together. The ends of the gripping arms 611 are provided with clamps 612 for gripping the core rod 110. The clamps 612 are approximately semi-circular in shape. Using two clamps 612 to grip the core rod 110 provides a large contact surface between the clamps 612 and the core rod 110, enabling stable fixation of the core rod 110. The core rod gripping device 600 further includes a driving member 630 for controlling the gripper 610 to clamp or release the core rod 110. The driving member 630 includes a driving cylinder 631. Two connecting rods 632 are hinged to the piston rod of the driving cylinder 631. The two connecting rods 632 are respectively connected to its piston rod. One of the clamping arms 611 is hinged, and the driving cylinder 631 can push its piston rod to extend and retract. During the extension and retraction, it can drive the connecting rod 632 and the clamping arm 611 to move up and down. The core rod clamping device 600 also includes a pad 633. The two clamping arms 611 are mounted on the pad 633 through the same rotating shaft. Under the action of the rotating shaft, the two clamping arms 611 rotate only relative to the pad 633. One end of the clamping clamp 612 on the clamping arm 611 is rotatably connected to the rotating shaft, so that the position of the two clamping clamps 612 in the height direction does not change much, and the core rod 110 will not change position in the vertical direction when clamping the core rod 110.

[0064] The core rod clamping device 600 also includes a mounting plate 640, a drive unit 630 and a gripper 610 mounted on the mounting plate 640, and a lifting cylinder 620 that can control the lifting of the mounting plate 640 to achieve the lifting of the gripper 610.

[0065] Reference Figure 2 , Figure 9 and Figure 10 In another embodiment of the present invention, the transmission relationship between the core rod support and the pusher is specifically described:

[0066] Multiple core rod support members 300 are provided, including a first support member 301 and a second support member 302. The first support member 301 and the second support member 302 have the same structure but opposite rotation directions. The first support member 301 and the second support member 302 are distributed at intervals along the length of the frame 100. The push member 520 is rotatably provided at the bottom of the top conveying trolley 500. There are two push members 520, namely a first push plate 5201 and a second push plate 5202 provided at both ends of the top conveying trolley 500 in the tube moving direction. The first push plate 5201 and the second push plate 5202 have the same structure but opposite orientation.

[0067] During the material loading process:

[0068] The second support member 302 remains vertical and supports the core rod 110. The first support member 301 remains in a flipped state. When the pipe is fed, the end of the pipe contacts the second support member 302 and pushes the second support member 302 to flip it. The pipe will then contact the pipe support member 400 and be supported by the pipe support member 400, keeping the axis position of the two unchanged.

[0069] The top-feeding trolley 500 begins to move, pushing the pipe forward. During the movement, the first push plate 5201 pushes the first support member 301 to reset and support the core rod 110, which has no pipe outside. After reset, the first push plate 5201 remains in contact with the first support member 301 and begins to flip over to pass the first support member 301. The second support member 302 remains in the flipped state. When the top-feeding trolley 500 moves to the end of the frame 100, the pipe is transmitted from the core rod 110 to complete the processing. The entire core rod 110 is supported by the first support member 301.

[0070] The top conveying trolley 500 begins to reset. During the movement, the first push plate 5201 first contacts the first support member 301 and pushes it down to avoid affecting the movement of the top conveying trolley 500. Then, it maintains contact with the first support member 301 and flips over as the top conveying trolley 500 moves, passing over the flipped first support member 301. The second push plate 5202 pushes the second support member 302 to reset, supporting the core rod 110. After reset, the second push plate 5202 maintains contact with the second support member 302 and begins to flip over to pass over the second support member 302. When the top conveying trolley 500 resets, the core rod 110 is supported by the second support member 302.

[0071] Reference Figure 2 , Figure 9 , Figure 11 and Figure 12In another embodiment of the present invention, the structure of the core rod support 300 and the pusher 520 is specifically described:

[0072] The core rod support 300 includes a fixed seat 310 mounted on the frame 100 and a support seat 320 rotatably mounted on the fixed seat 310 for supporting the core rod 110. The support seat 320 can be flipped up and down relative to the fixed seat 310. The side of the support seat 320 is provided with a protruding lever 330. The fixed seat 310 is provided with a limiting seat 340 that can abut against the support seat 320 to limit the flipping angle and flipping direction of the support seat 320. When the support seat 320 is flipped relative to the fixed seat 310, the height position of the lever 330 is higher than the height position of the support seat 320.

[0073] When the core rod support 300 is in the flipped state, the vertical height of the lever 330 is higher than the height of the support base 320. When the pusher 520 moves, it will not contact the support base 320 but will contact the lever 330 to push the support base 320 to flip. After flipping, the lever 330 will rotate with the support base 320 and move away from the pusher 520, thus not affecting the movement of the pusher 520. Springs 350 are provided on both sides of the fixed base 310. The springs 350 are connected to the lever 330 through hooks. When the support base 320 flips, the springs 350 are stretched and accumulate elastic force. Since the support base 320 has flipped 90°, the springs 350 have difficulty pulling the support base 320 back to its original position. However, when the pusher 520 moves the lever 330, the tension of the springs 350 can quickly reset the support base 320.

[0074] The first support member 301 and the second support member 302 have the same structure, only their orientations are opposite.

[0075] In addition, one end of the lever 330 extends laterally into a support base 320 on the frame 100. The first push plate 5201 and the second push plate 5202 are positioned on the top conveying trolley 500 near the side, so that the first push plate 5201 and the second push plate 5202 only contact the lever 330 during the movement of the top conveying trolley 500 and do not touch the support base 320 or the pipe support 400.

[0076] The pusher 520 includes a plate 521, which can rotate vertically relative to the top conveying trolley 500. It also includes a limiting block 522 to restrict the rotation angle of the plate 521. When the plate 521 moves the lever 330, the limiting block 522 abuts against the top conveying trolley 500 to prevent the plate 521 from rotating, allowing the support base 420 to be smoothly reset. The first push plate 5201 and the second push plate 5202 have completely identical structures, differing only in direction and position. Unlike other pushers, when the top conveying trolley 500 pushes the pipe to move, the plate 521 of the first push plate 5201 is limited and can move the lever 330 of the first support member 301. During this process, the plate 521 of the second push plate 5202 contacts the lever 330 of the second support member 302 but is pushed by the lever 330, causing the plate 521 to flip. Only when it is reset can the limiting member restrict the rotation angle of the plate 521 to reset the second support member 302.

[0077] Reference Figure 13 and Figure 14 In another embodiment of the present invention, the structure of the pipe support 400 is specifically described:

[0078] The pipe support 400 includes a support base 410 and two rotating wheels 420 rotatably mounted on the support base 410. An adjustment assembly 430 is provided below the frame 100 to adjust the angle of the two rotating wheels 420 relative to the support base 410 in the horizontal direction, ensuring that the angle between the axis of the rotating wheels 420 and the axis of the pipe is less than or equal to 90°, and that the two rotating wheels 420 rotate in the same direction in the horizontal direction. When the adjustment assembly 430 maintains a 90° angle between the axis of the two rotating wheels 420 and the axis of the pipe, the rotating wheels 420 rotate to assist the pipe in advancing, before the pipe is processed. When the pipe is rolled, the adjustment assembly 430 changes the angle of the two rotating wheels 420, so that the angle between the axis of the two rotating wheels 420 and the axis of the pipe is less than 90°. Furthermore, because the two rotating wheels 420 rotate in the same direction in the horizontal direction, their contact points with the copper pipe are different, similar to threads, enabling the pipe to rotate.

[0079] Furthermore, the specific structure of the adjustment component 430 includes:

[0080] C-shaped connecting rod 431: Each pipe support 400 has a C-shaped connecting rod 431. One end of the C-shaped connecting rod 431 is connected to a rotating wheel 420 seat, and the other end is connected to another rotating wheel 420 seat. This allows the two rotating wheels 420 seats to rotate in the same direction while maintaining a constant distance between them, so as to facilitate the transmission of the pipe.

[0081] A pull rod 432 is located below the frame 100, that is, below the multiple pipe support components 400. The pull rod 432 is equipped with multiple swing arms 433. One end of the swing arm 433 is hinged to the pull rod 432, and the other end is fixedly connected to one of the rotating wheels 420 seats of a pipe support component 400. When the pull rod 432 moves, it can drive all the swing arms 433 to move. After the swing arms 433 move, they will drive the multiple rotating wheels 420 seats to rotate simultaneously.

[0082] The power unit 434 is used to pull the lever 432 to control the angle change of the rotating wheel 420.

[0083] Reference Figure 3 and Figure 5 In another embodiment of the present invention, the transmission structure within the rolling mill head 200 is specifically described:

[0084] The planetary carrier 210 is provided with a plurality of first cylindrical gears 240 that mesh with the rotating bevel gears 211 and second cylindrical gears 241 that mesh with the first cylindrical gears 240. The number of first cylindrical gears 240 and second cylindrical gears 241 is the same as the number of rolling heads 220. The planetary carrier 210 is also provided with a first rotating shaft 242 connected to the second cylindrical gears 241. The first rotating shaft 242 is provided with a first bevel gear 243. The rolling head 220 is provided with a second rotating shaft 244. The second rotating shaft 244 is provided with a second bevel gear 245 that meshes with the first bevel gear 243.

[0085] When the self-rotating bevel gear 211 rotates, it drives multiple first cylindrical gears 240 to rotate. The first cylindrical gears 240 drive the second cylindrical gear 241 to rotate. The second cylindrical gear 241 drives the first bevel gear 243 to rotate through the first rotating shaft 242. The first bevel gear 243 drives the second bevel gear 245 and the second rotating shaft 244 to rotate. When the second rotating shaft 244 rotates, the rolling head 220 can start rolling the pipe. The transmission structure between each rolling head 220 and the self-rotating bevel gear 211 is the same, so that the rotation direction and speed of each rolling head 220 are also the same.

[0086] During tube rolling, the mandrel remains rotating. Given the mandrel's considerable length, if rotational power is only provided at the mill head, the entire mandrel will experience significant torsional force. Therefore, referring to... Figure 1 and Figure 15 In another embodiment of the present invention, an auxiliary device 700 is also provided on the frame 100, including a machine body 710, a rotating device 720 and a clamping device 730 provided on the machine body 710. When the pipe is fed, it first passes through the rotating device 720 and the clamping device 730 and then is conveyed along the core rod 110. The rotating device 720 is used to rotate the core rod 110, and the clamping device 730 is used to clamp the core rod 110 to prevent the core rod 110 from changing position in the axial direction.

[0087] The machine body 710 is provided with a rotating seat 740. The clamping device 730 includes a shaft 731 and a chuck 732. The chuck 732 is set along the shaft 731 and rotatably installed in the rotating seat 740. The chuck 732 can clamp or release the core rod 110 by sliding back and forth along the shaft 731. So when the chuck 732 clamps the core rod 110, it can rotate with the core rod 110. The machine body 710 is also provided with a dragging component 750. The dragging component 750 is connected to the rotating seat 740 and drags the rotating seat 740 to move, so that the chuck 732 moves along the shaft 731 to control the clamping or releasing of the core rod 110.

[0088] The rotation assist device 720 includes a motor 721 disposed above the chuck 732, an upper friction wheel 722 that is drivenly connected to the motor 721, and a lower friction wheel 723 disposed on the side of the chuck 732. The lower friction wheel 723 abuts against the upper friction wheel 722. The motor 721 can control the rotation of the upper friction wheel 722, and the lower friction wheel 723 can rotate in the opposite direction to the upper friction wheel 722 by abutting against the upper friction wheel 722.

[0089] Since the pusher 510 on the top conveying trolley 500 needs to be fitted over the core rod 110, an adjusting cylinder 760 is also provided on the frame 100. The adjusting cylinder 760 can adjust the position of the machine body 710 on the frame 100. When the pipe needs to be moved onto the core rod 110, the chuck 732 releases its grip on the core rod 110 to facilitate the passage of the pipe. Then, the adjusting cylinder 760 pushes the machine body 710 to move, so that the core rod 110 is disengaged from the machine body 710. The top conveying trolley 500 can then move to the end of the core rod 110 to push the pipe to move. The adjusting cylinder 760 then controls the machine body 710 to reset and clamp the core rod 110. In this way, the movement of the top conveying trolley 500 will not be affected.

[0090] To improve the quality of the processed pipes and facilitate their transport, the pipes need to be straightened before being fed onto the machine frame, as per [reference needed]. Figure 1 , Figure 16 In another embodiment of the present invention, the end of the frame 100 is further provided with a roller feeding device 800 for conveying pipes onto the frame 100. The front side of the roller feeding device 800 is provided with a pipe straightening device 900, including two supports 910 and a straightening frame 920 rotatably mounted between the two supports 910. One end of the straightening frame 920 is provided with a pipe inlet 921 and the other end is provided with a pipe outlet 922. The straightening frame 920 is provided with a straightening space 923 communicating with the pipe inlet 921 and the pipe outlet 922. The straightening space 923 is provided with a plurality of straightening rollers 930 for straightening pipes. One of the supports 910 is also provided with a driving device 940 for driving the straightening frame 920 to rotate.

[0091] The pipe enters the straightening space 923 from the pipe inlet 921. After being straightened by multiple sets of straightening rollers 930, it extends out from the pipe outlet 922. During the movement of the pipe, it can be quickly straightened after being operated by multiple sets of straightening rollers 930. The pipe does not need to stop in the middle, so the processing speed of the pipe is not reduced.

[0092] During straightening, the drive device 940 can also control the straightening frame 920 to rotate, so that the straightening roller 930 can fully contact the outer circumference of the pipe, ensuring that the pipe can be completely straightened.

[0093] The multiple straightening rollers 930 are divided into multiple groups and spaced apart along the axial direction of the pipe. Each group of straightening rollers 930 includes two corresponding straightening rollers 930, one above the other, and the distance between the two straightening rollers 930 in each group is the same. The distance between two adjacent straightening rollers 930 in the axial direction of the pipe is the same. The specifications of each group of straightening rollers 930 are the same, which ensures that the pipe can be straightened while being driven. It can increase the conveying speed of the pipe while ensuring the straightening quality, thereby increasing the processing speed.

[0094] Specifically, the straightening roller 930 includes a roller seat 931 fixedly installed in the straightening space 923 and a roller 932 rotatably installed on the roller seat 931. The roller seat 931 remains fixed, and during the straightening process, the roller 932 will not rotate around the roller seat 931 axially. The rollers 932 on the two roller seats 931 will not come into contact with each other, and the relative position between the roller 932 and the pipe is fixed, ensuring that the quality of the straightened pipe will not be reduced.

[0095] In the above description, the diameter of roller 932 gradually decreases from both ends to the middle. This creates a certain curvature on roller 932, resulting in a larger contact area with the pipe during straightening and a better straightening effect.

[0096] Furthermore, in each set of straightening rollers 930, the center of the lower roller 932 is closer to the pipe outlet 922, and the centers of the upper and lower rollers 932 are not on the same vertical line. With multiple sets of straightening rollers 930 arranged in this way, not only can the pipe be straightened quickly, but as the straightening frame 920 rotates, the pipe can also be gradually pushed towards the pipe outlet 922, providing power for the movement of the pipe. The corresponding principle can be referenced to threaded holes and screws.

[0097] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A high-speed rolling mill, characterized in that, include: frame; as well as, A rolling mill head for rolling tubes is mounted on the frame; as well as, A core rod mounted on the frame is used to guide the conveying of the tubing; and Core rod support and pipe support are installed on the frame to support the core rod and the pipe support. as well as, A top-feeding trolley slidably mounted on the frame for pushing the tube toward the rolling mill head; as well as, Multiple core rod clamping devices are used to limit the axial and radial displacement of the core rods during pipe conveying and processing; The top-feeding trolley can push the core rod support to rotate axially within the tube. The core rod clamping device includes grippers that can clamp or release the core rod and a lifting cylinder that controls the lifting and lowering of the grippers to avoid affecting the movement of the top-feeding trolley. An auxiliary device is also provided on the frame, including a machine body, a rotation assist device mounted on the machine body, and a clamping device. The machine body has a rotating seat, and the clamping device includes a shaft and grippers. The grippers are mounted along the shaft and rotatably within the rotating seat. The grippers reciprocate along the shaft to clamp or release the core rod. The mandrel is opened so that it can rotate with the mandrel after the jaws clamp it. The machine body is also equipped with a dragging component, which is connected to the rotating seat and drags the rotating seat to move, so that the jaws can move along the shaft to control the clamping or releasing of the mandrel. The rotation assist device includes a motor set above the jaws, an upper friction wheel connected to the motor drive, and a lower friction wheel set on the side of the jaws. The lower friction wheel abuts against the upper friction wheel. The motor can control the rotation of the upper friction wheel, and the lower friction wheel can rotate in the opposite direction to the upper friction wheel by abutting against the upper friction wheel.

2. The high-speed rolling mill according to claim 1, characterized in that, The bottom of the top conveying trolley is provided with a pusher, which abuts against the end of the tube to push the tube along the core rod. The pusher has a through hole with a diameter larger than that of the core rod. When the pusher pushes the tube to move, the through hole is coaxial with the core rod.

3. The high-speed rolling mill according to claim 2, characterized in that, The pusher is rotatably mounted at the bottom of the top conveying trolley. The pusher can flip up and down relative to the top conveying trolley. The bottom of the top conveying trolley is provided with a stop, which prevents the pusher from flipping when it pushes the pipe.

4. The high-speed rolling mill according to claim 1, characterized in that, The core rod support includes a fixed seat mounted on the frame and a support seat rotatably mounted on the fixed seat for supporting the core rod. The support seat can rotate up and down relative to the fixed seat. The support seat has a protruding lever on its side. The fixed seat has a limiting seat that can abut against the support seat to limit the rotation angle and rotation direction of the support seat. There are multiple core rod supports, which are divided into first supports and second supports. The first supports and second supports rotate in opposite directions and are spaced apart from each other along the length of the frame.

5. The high-speed rolling mill according to claim 4, characterized in that, The bottom of the top-feeding trolley is provided with a pusher that resets or flips the core rod support during the movement of the top-feeding trolley. There are two pushers, namely a first push plate and a second push plate, which are set at both ends of the top-feeding trolley in the direction of pipe movement. When the top-feeding trolley pushes the pipe to move, the first push plate resets the first support to support the core rod. When the top-feeding trolley resets, the first push plate pushes down the first support to facilitate the movement of the top-feeding trolley, and the second push plate resets the second support to support the core rod.

6. The high-speed rolling mill according to claim 1, characterized in that, The core rod clamping device also includes a drive component for controlling the gripper to clamp or release the core rod. The gripper consists of two clamping arms hinged together, and the ends of the clamping arms are provided with clamping hoops for clamping the core rod.

7. The high-speed rolling mill according to claim 1, characterized in that, The rolling mill head includes a planetary carrier, multiple rolling heads disposed within the planetary carrier, and a power device for driving the multiple rolling heads to rotate in order to roll the pipe. The planetary carrier is provided with rotating bevel teeth and revolving bevel teeth on its outer periphery. The rotating bevel teeth are used to control the rotation of the multiple rolling heads, and the revolving bevel teeth are used to control the revolving of the multiple rolling heads around the pipe.

8. The high-speed rolling mill according to claim 7, characterized in that, The rolling head is provided with a second rotating shaft. The rolling head includes a base and a pressure cap disposed at the end of the base. The second rotating shaft passes through the base and connects to the rolling head. The pressure cap is provided with an annular groove. A connecting plate is provided on the side of the rolling head facing the pressure cap. An adjusting shim that abuts against the connecting plate is placed in the annular groove.

9. The high-speed rolling mill according to claim 1, characterized in that, The end of the frame is also provided with a roller feeding device for conveying pipes onto the frame, and a pipe straightening device is provided in front of the roller feeding device for quickly straightening the pipes before they are conveyed to the frame.

10. The high-speed rolling mill according to claim 9, characterized in that, The pipe straightening device includes two supports and a straightening frame rotatably mounted between the two supports. The straightening frame is equipped with multiple straightening rollers for straightening the pipe. The multiple straightening rollers are divided into multiple groups and spaced apart along the pipe axial direction. Each group of straightening rollers includes two corresponding straightening rollers, one above the other, and the distance between the two straightening rollers in each group is the same. The straightening frame is provided with a straightening space communicating with the pipe inlet and the pipe outlet. The distance between two adjacent straightening rollers in the axial direction of the pipe is the same. The straightening roller includes a roller seat fixedly mounted in the straightening space and a roller rotatably mounted on the roller seat. In each group of straightening rollers, the center of the lower roller is closer to the pipe outlet.

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