A spatial discharge system for a welded pipe production line

Abstract

The present invention belongs to the technical field of high-frequency welded pipe production, and specifically relates to a spatial discharging system for a welded pipe production line, characterized in that the first layer of steel frame is formed by splicing two or more sections of steel frames, and a lifting steel turning machine is arranged between two adjacent sections of steel frames, and the lifting height of the lifting steel turning machine is 600~1200mm, and the rotation angle is within the range of 90° in both positive and negative directions; a second layer of steel frame is arranged perpendicularly above the first layer of steel frame, and the second layer of steel frame is located on one side and / or both sides of the lifting steel turning machine. Compared with the prior art, the beneficial effects of the present invention are: 1) It can better adapt to the structural characteristics of the production line of high-frequency welded pipes, so that when high-frequency welded pipes are transferred between processes, three-dimensional space can be effectively utilized, more steel pipes can be stored in the same area, and the role of intermediate buffer can be fully played; 2) The transfer action is smooth, reducing the safety hazards in the process of steel pipe handling, and at the same time, it can better ensure the continuous operation of the production line.

Description

Technical Field

[0001] This invention belongs to the field of high-frequency welded pipe production technology, specifically relating to a spatial material arrangement system for a welded pipe production line. Background Technology

[0002] The characteristics of high-frequency welded pipes are: high welding speed, small heat-affected zone, no need for post-weld cleaning, and the ability to weld thin-walled pipes and various metal pipes. The production process mainly depends on the product type. From raw materials to finished products, a series of processes are required. Completing these processes necessitates various mechanical equipment and welding, electrical control, and testing devices. These devices can be rationally arranged according to different process requirements. A typical high-frequency welded pipe process is: slitting – uncoiling – strip leveling – head and tail shearing – strip butt welding – looper storage – forming – welding – deburring – sizing – flaw detection – flying cut – initial inspection – pipe straightening – pipe section processing – hydrostatic testing – flaw detection – printing and coating – finished product.

[0003] In the production process of high-frequency welded pipes, it is inevitable to transfer and temporarily store steel pipes between various processes. The conventional operation involves using cranes to move the pipes between processes, which is inefficient and dangerous. A reasonable combination of roller conveyors, steel-turning mechanisms, and a first-layer steel frame can effectively improve the efficiency of transferring welded pipes between processes and can be flexibly set up according to the actual workshop area to meet the requirements of various production processes.

[0004] Chinese invention patent application number 201910948992.3 discloses an automatic material feeding rack for welded pipe production, including a first-layer steel frame and a steel turning machine. The steel turning machine is located at one end, both ends, or at the joint of the first-layer steel frame. Roller conveyors are provided on the steel inlet or outlet side of the steel turning machine. The first-layer steel frame includes an upper beam, a lower beam, and columns. The upper beam is composed of one or more sections of steel profile spliced ​​together. The steel inlet side of the upper beam is higher than the steel outlet side, with an inclination of 5-10mm / 1000mm. The joints are connected by elevated sections. This material feeding rack can adapt to the production of various specifications of high-frequency welded pipes and can meet the basic functions of supporting, turning, and conveying welded pipes during transport. This allows for coordinated and smooth movement of high-frequency welded pipes during inter-process transfer. Simultaneously, the steel turning process can limit the movement of adjacent steel pipes, preventing damage to the steel pipes and equipment caused by rolling impacts. Its drawback is that it can only operate on a single floor and cannot effectively utilize the space of the factory. On the continuous production line of welded pipe, the area where the steel pipes are arranged can reach up to 1 / 3 of the total area of ​​the production line, which seriously restricts the production efficiency and capacity improvement of the welded pipe production line. Summary of the Invention

[0005] The purpose of this invention is to provide a spatial material arrangement system for a welded pipe production line, which overcomes the shortcomings of the prior art, adapts to the structural characteristics of high-frequency welded pipe production lines, and enables the effective use of three-dimensional space when high-frequency welded pipes are transferred between processes. It can store more steel pipes in the same area, fully play the role of intermediate buffer, and also realize the smooth transfer of steel pipes in various spatial planes. The transfer action is smooth, reduces the safety hazards in the steel pipe handling process, and at the same time better ensures the continuous operation of the production line.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] A spatial material feeding system for a welded pipe production line includes a first-layer steel frame and a steel turning machine. The steel turning machine is located at both ends of the first-layer steel frame. A roller conveyor is provided on the steel inlet or outlet side of the steel turning machine. The first-layer steel frame includes an upper beam, a lower beam, and columns. The first-layer steel frame is characterized in that it is composed of two or more steel frame sections spliced ​​together. A lifting steel turning machine is provided between two adjacent steel frame sections. The lifting height of the lifting steel turning machine is 600~1200mm, and the rotation angle is within the range of 90° in both directions. A second-layer steel frame is provided perpendicular to the top of the first-layer steel frame. The second-layer steel frame is located on one side and / or both sides of the lifting steel turning machine.

[0008] The steel inlet side of the first layer of steel frame is higher than the steel outlet side, with an inclination of 5-10mm per 1000mm drop. The splicing points of the upper beams are connected by a 100-200mm long raised section, and a steel turning machine is installed at the raised section.

[0009] The steel-turning machine includes a base, a bearing seat, a main shaft, and steel-turning claws. The base is provided with a bearing seat, and the main shaft passes through the bearing seat. The steel-turning claws are provided with a steel-turning surface, which includes a steel-feeding surface, a steel-pushing surface, and a steel-blocking surface connected in sequence. The included angle between the steel-feeding surface and the steel-pushing surface is 115~125°, and the steel-blocking surface is a fan-shaped arc surface with an included angle of 45~55°.

[0010] There are gaps of 800-1500mm between two adjacent sections of the first layer of steel frame, and a lifting steel turning machine is installed in the gap.

[0011] The lifting steel-turning machine includes a base, a lifting hydraulic cylinder, a rotatable crossbeam, a bearing seat, a main shaft, and a steel-turning claw. The lifting hydraulic cylinder is mounted on the base, and the rotatable crossbeam is located on the top of the piston of the lifting hydraulic cylinder. The bearing seat is mounted on the rotatable crossbeam, and the main shaft passes through the bearing seat. The steel-turning claw is connected to the main shaft by a key. The steel-turning claw has symmetrical steel-turning surfaces. The steel-turning surfaces have a picking section a, a buffer section b, a sliding section c, and a finishing section d connected sequentially from the outside to the inside. When the sliding section c is in a horizontal position, the buffer section b is an arc segment tangentially connected to the sliding section c with an included angle α of 130~150°, the picking section a is a straight line segment tangentially connected to the buffer section b with an included angle β of 35~55° to the sliding section c, and the finishing section d has an included angle γ of -25~-35° to the sliding section c.

[0012] The height of the steel outlet side of the second layer steel frame relative to the steel inlet side is adjustable, and the steel outlet side is provided with a limiting baffle.

[0013] The bottom columns on the steel outlet side of the second layer steel frame are hydraulically lifting columns.

[0014] The rotatable crossbeam is equipped with a hydraulic lifting auxiliary rail that can connect the two sections of the first-layer steel frame.

[0015] In the technical solution of this invention, by adjusting the state of the lifting steel tipper, the steel pipes on the first layer of steel frame can be horizontally transported to the steel output side, or the steel pipes on the first layer of steel frame can be transported to the second layer of steel frame, thereby increasing the buffering effect on the steel pipes and enabling the production line to operate continuously.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1) It can better adapt to the structural characteristics of the high-frequency welded pipe production line, so that when the high-frequency welded pipe is transferred between processes, it can effectively utilize the three-dimensional space and store more steel pipes in the same area, thus fully playing the role of intermediate buffer; 2) It can also realize the smooth transfer of steel pipes in each spatial plane, with smooth transfer action, reducing safety hazards in the process of steel pipe handling, and at the same time better ensuring the continuous operation of the production line. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the automatic material feeding rack of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the steel turning machine of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the steel turning machine of the present invention.

[0020] Figure 4 This is a schematic diagram of the first-layer steel frame splicing embodiment of the present invention.

[0021] Figure 5This is a schematic diagram of an embodiment of the lifting-type steel turning machine of the present invention.

[0022] Figure 6 This is a schematic diagram of the structure of the second layer steel frame embodiment of the present invention.

[0023] In the diagram: 1-First layer steel frame, 101-Upper beam, 102-Lower beam, 103-Column, 104-Elevated section; 2-First steel turning machine, 201-Machine base, 202-Bearing seat, 203-Main shaft, 204-Steel turning claw, 2041-Base material, 2042-Wear-resistant layer, 2043-End plate; 3-Second steel turning machine, 301-Machine base, 302-Bearing seat, 303-Main shaft, 304-Steel turning claw, 3041-Base material, 3042-Wear-resistant layer Layer, 4-Roller conveyor one, 5-Roller conveyor two, 6-Welded pipe, 7-V-grooved roller, 8-Roller shaft, 9-Bearing seat, 10-Base, 11-Gear motor, 12-Second layer steel frame, 13-Lifting steel turning machine, 1301-Machine base, 1302-Lifting hydraulic cylinder, 1303-Rotating crossbeam, 1304-Bearing seat, 1305-Main shaft, 1306-Steel turning claw, 1307-Hydraulic lifting auxiliary rail, 14-Limit baffle, 15-Hydraulic lifting column. Detailed Implementation

[0024] The embodiments of the present invention will be further described below with reference to examples:

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] See Figure 1 This is a schematic diagram of an embodiment of a spatial material feeding system for a welded pipe production line according to the present invention. It includes a first layer steel frame 1, a first turning machine 2, and a second turning machine 3. The first turning machine 2 and the second turning machine 3 are respectively located at both ends of the first layer steel frame 1. The steel feeding side of the first turning machine 2 is provided with a roller conveyor 4, and the steel output side of the second turning machine 3 is provided with a roller conveyor 5. The first layer steel frame 1 includes an upper beam 101, a lower beam 102, and a column 103. The steel feeding side of the upper beam 101 is higher than the steel output side, with a drop of 5~10mm per 1000mm. When the welded pipe 6 is conveyed by the roller conveyor 4, the first turning machine 2 transfers the welded pipe to the first layer steel frame 1 for buffering. The inclination of the upper beam 101 causes the welded pipe to slowly roll towards the steel output side. According to the production schedule, the second turning machine 3 transfers the welded pipe 6 to the roller conveyor 5 for the next process. Since the welded pipe is rolled and transferred in a plane, the accident rate during the handling process is greatly reduced.

[0027] Roller conveyor 4 and roller conveyor 5 have the same structure, including a V-grooved roller 7, a roller shaft 8, a bearing seat 9, a base 10, and a geared motor 11. The geared motor 11 is connected to one end of the roller shaft 8, and the two ends of the roller shaft 8 are connected to the base 10 through the bearing seat 9. Preferably, the geared motor 11 is an R-series helical geared motor with a power of 4.0kW. The V-grooved roller 7 has a width of 900mm, a major diameter of 650mm, and a V-groove bottom angle of 100°.

[0028] The first layer of steel frame 1 is composed of two or more sections of steel frame spliced ​​together. There is a gap of 800-1500mm between two adjacent sections of the first layer of steel frame 1, and a lifting steel turning machine 13 is installed in the gap. The lifting height of the lifting steel turning machine 13 is 600-1200mm, and the rotation angle is within the range of 90° in both directions. A second layer of steel frame 12 is installed perpendicular to the first layer of steel frame 1. The second layer of steel frame 12 is located on one side and / or both sides of the lifting steel turning machine 13, depending on the process requirements.

[0029] See Figure 2 The first steel-turning machine 2 includes a base 201, a bearing seat 202, a main shaft 203, and steel-turning claws 204. The base 201 is provided with the bearing seat 202, and the main shaft 203 is set through the bearing seat 202. Multiple first steel-turning machines are distributed at intervals on one main shaft 203, and can achieve synchronous operation under the drive of an electric motor or a hydraulic motor. The steel-flipping claw 204 includes a base material 2041 and a wear-resistant layer 2042. The wear-resistant layer 2042 is disposed on the steel-flipping surface of the base material 2041. The steel-flipping surface has a picking section a, a buffer section b, a sliding section c, and a finishing section d connected in sequence. When the sliding section c is in a horizontal position, the buffer section b is an arc segment tangentially connected to the sliding section c with an included angle α of 130~150°, the picking section a is a straight segment tangentially connected to the buffer section b with an included angle β of 35~55° to the sliding section c, and the finishing section d has an included angle γ of -25~-35° to the sliding section c. The end of the picking section a is connected to an end plate 2043, and the blade of one end of the end plate 2043 extends 30~45mm above the picking section.

[0030] See Figure 3The structure of the second steel-turning machine 3 includes a base 301, a bearing seat 302, a main shaft 303, and a steel-turning claw 304. The base 301 has a bearing seat 302, and the main shaft 303 passes through the bearing seat 302. The steel-turning claw 304 includes a base material 3041 and a wear-resistant layer 3042. The wear-resistant layer is located on the steel-turning surface of the base material. The steel-turning surface includes a guide surface e, a guide surface f, and a blocking surface g connected in sequence. The included angle ε between the guide surface e and the guide surface f is 115~125°, and the blocking surface g is a fan-shaped arc surface with an included angle ζ of 45~55°. The function of the blocking surface g is that when the guide surface f picks up a welded pipe and turns it over, the blocking surface g can slide across the surface of the adjacent welded pipe, preventing the subsequent welded pipe from advancing. This avoids misoperation of the steel-turning mechanism when two steel pipes are too close, preventing the steel pipe from falling or jumping, and eliminating safety hazards.

[0031] See Figure 4 When the length of the first-layer steel frame 1 is too long, a splicing structure can be adopted. The splicing points of the upper beam 101 are connected by a 100-200mm long cantilever section 104. The cantilever section 104 ensures that the upper beam 101 has sufficient length and a suitable slope, facilitating the layout of production equipment and the smooth operation of welded pipes. This invention is applicable to both welded pipe production and seamless steel pipe production. The upper beam 101 can be made of any type of steel profile, such as channel steel, H-beam, or I-beam. A second steel-turning machine 3 is generally required at the splicing point.

[0032] In the embodiments, Figures 2 to 4 The steel turning machine and steel frame structure shown are both existing technologies.

[0033] See Figure 5The lifting steel-turning machine of the present invention, embodiment 13, includes a base 1301, a lifting hydraulic cylinder 1302, a rotatable crossbeam 1303, a bearing seat 1304, a main shaft 1305, and a steel-turning claw 1306. The lifting hydraulic cylinder 1302 is mounted on the base 1301. The rotatable crossbeam 1303 is located on the top of the piston of the lifting hydraulic cylinder 1302 and can rotate ±90 degrees relative to the top of the piston of the lifting hydraulic cylinder 1302. The bearing seat 1304 is mounted on the rotatable crossbeam 1303, and the main shaft 1305 is mounted on the bearing seat 1304. The steel-turning claw 1306 is connected to the main shaft 1305. Shaft 1305 is connected by a key. The steel-turning claw 1306 is similar in shape to the steel-turning claw of the first steel-turning machine 2, but is symmetrically arranged. The steel-turning surface on the steel-turning claw is the same as that of the first steel-turning machine 2. The steel-turning surface has a picking section a, a buffer section b, a sliding section c, and a finishing section d connected in sequence. When the sliding section c is in a horizontal position, the buffer section b is an arc segment tangentially connected to the sliding section c with an angle α of 130~150°. The picking section a is a straight segment tangentially connected to the buffer section b with an angle β of 35~55° with the sliding section c. The finishing section d has an angle γ of -25~-35° with the sliding section c. The end of the picking section a is connected to the end plate 2043. The blade of one end of the end plate 2043 is 30~45mm higher than the picking section. The base 1301 is provided with a hydraulic lifting auxiliary rail 1307 that can connect the two sections of the first layer steel frame 1. When it is not necessary to lift the welded pipe to the second layer of steel frame, the hydraulic lifting auxiliary rail 1307 rises, connecting the two sections of the first layer of steel frame, allowing the welded pipe 6 to roll smoothly over the surface of the steel frame. When it is necessary to lift the welded pipe, the hydraulic lifting auxiliary rail 1307 falls, and the lifting steel tilting machine 13 picks up a welded pipe. Then, the lifting hydraulic cylinder 1302 rises to a suitable height, ensuring the welded pipe is in a non-interference state. The rotatable beam rotates 90 degrees until it aligns with the second layer of steel frame 12, and then the tilting claw 1306 moves to transfer the welded pipe onto the second layer of steel frame.

[0034] See Figure 6 The height of the discharge side of the second-layer steel frame 12 relative to the feed side is adjustable. A limiting baffle 14 is provided on the discharge side to limit the movement of the welded pipe. The bottom column on the discharge side of the second-layer steel frame 12 is a hydraulic lifting column 15. The second-layer steel frame 12 can be used to reverse the order of welded pipes in space and can also serve as a buffer platform to store some welded pipes. When it is necessary to remove the welded pipe from the feed side, the hydraulic lifting column 15 is raised so that the feed side of the second-layer steel frame 12 is below the side where the limiting baffle 14 is located.

[0035] The embodiments described above are merely specific examples selected to illustrate the purpose, technical solution, and beneficial effects of the present invention in detail, but should not limit the scope of protection of the invention. All modifications, equivalent substitutions, and improvements made without departing from the spirit and principles of the present invention should fall within the scope of protection of the present invention.

Claims

1. A space discharge system for a welded pipe production line, comprising a first-layer steel frame and a steel turning machine, wherein the steel turning machine is arranged at both ends of the first-layer steel frame, and a roller is arranged on the steel inlet side or the steel outlet side of the steel turning machine, and the first-layer steel frame comprises an upper beam, a lower beam and a column, characterized in that: The first layer of steel frame is formed by splicing two or more steel frames, and a lifting steel turning machine is arranged between two adjacent steel frames, the lifting height of the lifting steel turning machine is 600~1200mm, and the rotation angle is within the range of 90° in both positive and negative directions; a second layer of steel frame is arranged perpendicular to the upper part of the first layer of steel frame, and the second layer of steel frame is located on one side and / or both sides of the lifting steel turning machine; the steel turning machine includes a machine base, a bearing seat, a main shaft and a steel turning claw, a bearing seat is arranged on the machine base, and the main shaft passes through the bearing seat, and a steel turning claw is provided with a steel turning surface, and the steel turning surface includes a steel sliding surface, a steel pushing surface and a steel blocking surface connected in sequence, and the angle between the steel turning surface and the steel pushing surface is 115~125°, and the steel blocking surface is a fan-shaped arc surface with an angle of 45~55°; a spacing of 800~1500 is arranged between two adjacent sections of the first layer of steel frames. mm of neutral space, in which a lifting steel turning machine is arranged; the lifting steel turning machine comprises a machine base, a lifting hydraulic cylinder, a rotatable crossbeam, a bearing seat, a main shaft and a steel turning claw, a lifting hydraulic cylinder is arranged on the machine base, a rotatable crossbeam is arranged on the piston top of the lifting hydraulic cylinder, a bearing seat is arranged on the rotatable crossbeam, the main shaft runs through the bearing seat, the steel turning claw is connected to the main shaft by a key, the steel turning claw is provided with a left-right symmetrical steel turning surface, the steel turning surface has a picking-up section a, a buffer section b, a sliding section c and a tail section d connected in sequence from outside to inside, when the sliding section c is in a horizontal position, the buffer section b is a circular arc section tangentially connected to the sliding section c, and the angle α is 130~150°, the picking section a is a straight line section tangentially connected to the buffer section b, and the angle β with the sliding section c is 35~55°, and the angle γ between the tail section d and the sliding section c is -25~-35°; The height of the steel outlet side of the second steel frame relative to the steel inlet side is adjustable, and a limit baffle is provided on the steel outlet side; The machine base is provided with a hydraulic lifting auxiliary rail which can connect the two sections of the first layer steel frame; When there is no need to lift the welded pipe to the second-layer steel frame, the hydraulic lifting auxiliary rail rises to connect the two sections of the first-layer steel frame, and the welded pipe can roll smoothly over the surface of the steel frame; when the welded pipe needs to be lifted, the hydraulic lifting auxiliary rail falls, and the lifting steel turning machine is in place to pick up a welded pipe. The lifting hydraulic cylinder rises to a suitable height to put the welded pipe in a non-interference state. The crossbeam can be rotated 90 degrees to align with the second-layer steel frame, and the steel turning claw will move the welded pipe to the second-layer steel frame.

2. The spatial discharge system of a welded pipe production line according to claim 1, characterized in that: The steel input side of the first layer steel frame is higher than the steel output side, with a slope of 5-10 mm for every 1000 mm drop. The joints of the upper beams are connected by a 100-200 mm long raised section, at which a steel turning machine is provided.

3. The spatial discharge system of a welded pipe production line according to claim 2, characterized in that: The columns at the bottom of the steel-outlet side of the second-layer steel frame are hydraulic lifting columns.

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