Overall thick-wall steel pipe joint closing machine

Abstract

The utility model relates to a thick-wall steel pipe integral joint closing machine which comprises a plurality of press units, the press units are sequentially connected in series through connecting beams to enable the interiors of the press units to be communicated to form a joint closing channel, and a pressing sliding table used for pressing downwards to enable a thick-wall steel pipe to deform is arranged at the top of the joint closing channel. The pressing sliding table is connected with a main oil cylinder mounted at the top of the press unit and is in up-down sliding fit with the interior of the press unit; a lower beam unit used for supporting the thick-wall steel pipe is arranged at the bottom of the joint closing channel, and a plurality of pairs of conveying roller units symmetrical about the lower beam unit and a plurality of pairs of rotating roller units symmetrical about the lower beam unit are installed between the lower beam unit and the connecting beam. The device has the beneficial effects that the pressing sliding table and the lower beam unit are arranged in the joint closing channel formed by connecting a plurality of press units in series, the semi-finished thick-wall steel pipe which is manufactured by a JCO forming process and is provided with an opening is placed on the lower beam unit, and the opening of the semi-finished thick-wall steel pipe is reduced by driving the pressing sliding table to press downwards through the main oil cylinders on the press units.

Description

Technical Field

[0001] This utility model relates to the field of straight seam welded pipe joining technology, and in particular to a thick-walled steel pipe integral joining machine. Background Technology

[0002] In the straight seam welded pipe industry, the JCO forming process is the most widely used. Steel plates are first formed into a J-shape, then a C-shape, and finally an O-shaped round pipe using a die on a T-forming forming tool holder. The JCO forming process can produce pipes without requiring numerous die changes or equipment adjustments. However, a drawback of JCO forming is that because the forming tool holder needs to extend into the steel pipe, the forming machine can only produce semi-finished products with openings. A subsequent seam pre-welding machine is needed to close these openings and complete the welding process.

[0003] Existing pre-welding machines can perform pre-welding on most welded pipes with large diameter-to-thickness ratios. However, as the application scenarios for steel pipes become increasingly demanding, welded pipes are gradually developing towards smaller diameters, larger wall thicknesses, and high-performance materials, making existing equipment increasingly inadequate. Therefore, a pre-welding machine is needed to press the opening to a weldable size before welding to facilitate subsequent welding work. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned problems in the existing technology and provide a thick-walled steel pipe integral jointing machine.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A thick-walled steel pipe integral seaming machine includes multiple "U"-shaped press units. The multiple press units are connected in series by connecting beams to form a seaming channel. The top of the seaming channel is provided with a pressing slide for pressing down to deform the thick-walled steel pipe. The pressing slide is connected to a main hydraulic cylinder installed on the top of the press unit, and the pressing slide slide slide slides up and down with the inside of the press unit. The bottom of the seaming channel is provided with a lower beam unit for supporting the thick-walled steel pipe. Multiple pairs of conveying roller units and multiple pairs of rotating roller units symmetrical about the lower beam unit are installed between the lower beam unit and the connecting beam.

[0007] The press unit includes a U-shaped press frame, a main hydraulic cylinder for providing the sealing pressure, two symmetrical vertical guide plates, and two symmetrical longitudinal guide rails. The main hydraulic cylinder is installed on the top of the press frame, the two vertical guide plates are respectively installed on the inner sides of the press frame, and the two longitudinal guide rails are respectively installed on the two vertical guide plates.

[0008] The pressing slide includes a pressing main beam and a pressing mold. The pressing main beam is connected to the piston rod of the main oil cylinder through a ball joint mechanism. The pressing mold is installed at the bottom end of the pressing main beam. Multiple sets of guide mechanisms are installed on the left and right sides of the pressing main beam, which are symmetrically arranged about the pressing main beam. The guide mechanisms slide in cooperation with the vertical guide plate and the longitudinal guide rail.

[0009] The guiding mechanism includes a vertical guide seat and a longitudinal guide seat, which are respectively fixedly installed on the side of the pressing main beam. A vertical guide strip is installed at the end of the vertical guide seat away from the pressing main beam, and the vertical guide strip slides in cooperation with the vertical guide plate. A longitudinal guide strip is installed at the end of the longitudinal guide seat away from the pressing main beam, and the longitudinal guide strip slides in cooperation with the longitudinal guide rail.

[0010] The lower beam unit includes a bottom beam, a lower mold for forming thick-walled steel pipes, and a lifting wheel mechanism for lifting and rotating the thick-walled steel pipes. The bottom of the bottom beam is fixedly installed on the press frame at the bottom of the joint channel. The lower mold is fixedly installed on the top of the bottom beam. The top of the lower mold is provided with a V-shaped groove for positioning the thick-walled steel pipes. The lifting wheel mechanism is installed on the upper part of the bottom beam.

[0011] The lifting wheel mechanism includes a mounting base, a cylinder mounting plate, a wheel seat, a lifting cylinder, and a lifting wheel. The mounting base is fixedly installed on the top of the bottom beam. Two parallel guide sleeves are installed in the mounting base, and a wheel seat is fitted in each guide sleeve. The lifting wheel is rotatably mounted on the top of the wheel seat via a wheel axle. The bottom end of the wheel seat is connected to the lifting cylinder mounting plate. The front flange of the lifting cylinder is installed on the cylinder mounting plate, and the piston rod of the lifting cylinder is connected to the bottom of the mounting base.

[0012] The conveying roller unit includes a first base, a first pressure plate, and a first wheel seat. The first end of the first base is connected to the side of the bottom beam by bolts, and the tail end of the first base is installed on the top of the connecting beam by bolts. A first lead screw is rotatably installed in the first base, and a first movable reduction motor is installed at the tail end of the first base. The motor shaft of the first movable reduction motor is connected to the lead screw of the first lead screw through a first coupling. The first pressure plate is installed on the top of the first base to form a first guide groove between the first pressure plate and the top of the first base. The first wheel seat is slidably installed in the first guide groove. The lead screw nut of the first lead screw is connected to the bottom end of the first wheel seat. A conical wheel is rotatably installed at the first end of the first wheel seat, and a conveying reduction motor is installed at the tail end of the first wheel seat. The motor shaft of the conveying reduction motor is connected to the conical wheel through a second coupling.

[0013] The rotating roller unit includes a second base, a second pressure plate, and a second wheel seat. The first end of the second base is connected to the side of the bottom beam by bolts, and the tail end of the second base is bolted to the top of the connecting beam. A second lead screw is rotatably mounted in the second base, and a second movable reduction motor is mounted at the tail end of the second base. The motor shaft of the second movable reduction motor is connected to the lead screw of the second lead screw through a third coupling. The second pressure plate is mounted on the top of the second base to form a second guide groove between the second pressure plate and the top of the second base. The second wheel seat is slidably mounted in the second guide groove. The lead screw nut of the second lead screw is connected to the bottom end of the second wheel seat. A rotating roller is rotatably mounted at the first end of the second wheel seat, and a rotating reduction motor is mounted at the tail end of the second wheel seat. A first sprocket is mounted on the power output shaft of the rotating reduction motor, and a second sprocket is mounted on one end of the axle of the rotating roller. The first sprocket and the second sprocket are connected by a transmission chain. A chain cover is also mounted on the second wheel seat, covering the first sprocket, the second sprocket, and the transmission chain.

[0014] The beneficial effects of this utility model are as follows: a pressing slide and a lower beam unit are set in the seam channel formed by multiple press units connected in series. The semi-finished thick-walled steel pipe with an opening, which is produced by the JCO forming process, is placed on the lower beam unit. The main hydraulic cylinder on the press unit drives the pressing slide to press down, thereby reducing the opening of the semi-finished thick-walled steel pipe. The lifting wheel mechanism lifts the semi-finished thick-walled steel pipe, and the rotating roller unit rotates the semi-finished thick-walled steel pipe, thereby adjusting the angle of the semi-finished thick-walled steel pipe so that the pressing slide can press down from different positions of the semi-finished thick-walled steel pipe to reduce the opening of the semi-finished thick-walled steel pipe. The conveying roller unit transports the semi-finished thick-walled steel pipe, reducing the labor intensity of workers. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of the integral seam machine for medium and thick-walled steel pipes of this utility model;

[0017] Figure 2 This is a front view structural schematic diagram of the medium-pressure unit of this utility model;

[0018] Figure 3 This is a schematic diagram of the sliding fit between the guide mechanism and the press unit in this utility model;

[0019] Figure 4 This is a structural schematic diagram of the lifting wheel mechanism in this utility model;

[0020] Figure 5 This is a schematic diagram of the conveyor roller unit in this utility model;

[0021] Figure 6 This is a schematic diagram of the rotating roller unit in this utility model;

[0022] Explanation of the numbers in the diagram: Press unit 1, Press frame 11, Main cylinder 12, Vertical guide plate 13, Longitudinal guide rail 14, Connecting beam 2, Joint channel 3, Pressing slide 4, Pressing main beam 41, Pressing mold 42, Ball joint mechanism 43, Guide mechanism 44, Vertical guide seat 45, Longitudinal guide seat 46, Vertical guide bar 47, Longitudinal guide bar 48, Lower beam unit 5, Bottom beam 51, Lower mold 52, Lifting wheel mechanism 53, V-groove 54, Mounting seat 55, Cylinder mounting plate 56, Wheel seat 57, Lifting cylinder 58, Lifting wheel 59, Guide sleeve 510, Conveying roller Unit 6, First base 61, First pressure plate 62, First wheel seat 63, First lead screw 64, First moving geared motor 65, First coupling 66, First guide groove 67, Conical wheel 68, Conveyor geared motor 69, Second coupling 610, Rotary roller Unit 7, Second base 71, Second pressure plate 72, Second wheel seat 73, Second lead screw 74, Second moving geared motor 75, Third coupling 76, Second guide groove 77, Rotary roller 78, Rotary geared motor 79, First sprocket 710, Second sprocket 711, Transmission chain 712, Chain cover 713. Detailed Implementation

[0023] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 6 As shown, a thick-walled steel pipe integral seaming machine includes multiple "U"-shaped press units 1. Each press unit 1 includes a "U"-shaped press frame 11, a main hydraulic cylinder 12 for providing seaming pressure, two left-right symmetrical vertical guide plates 13, and two left-right symmetrical longitudinal guide rails 14. The main hydraulic cylinder 12 is installed on the top of the press frame 11, the two vertical guide plates 13 are respectively installed on the inner sides of the press frame 11, and the two longitudinal guide rails 14 are respectively installed on the two vertical guide plates 13.

[0025] Multiple press units 1 are connected in series via connecting beams 2 to form a joint channel 3.

[0026] The top of the joint channel 3 is provided with a pressing slide 4 for pressing down to deform the thick-walled steel pipe. The pressing slide 4 is connected to the main oil cylinder 12 installed on the top of the press unit 1, and the pressing slide 4 slides up and down inside the press unit 1.

[0027] Specifically, the pressing slide 4 includes a pressing main beam 41 and a pressing mold 42. The pressing main beam 41 is connected to the piston rod of the main oil cylinder 12 through a ball joint mechanism 43. The pressing mold 42 is installed at the bottom end of the pressing main beam 41. Multiple sets of guide mechanisms 44 are installed on the left and right sides of the pressing main beam 41, which are symmetrically arranged about the pressing main beam 41. The guide mechanisms 44 slide in cooperation with the vertical guide plate 13 and the longitudinal guide rail 14.

[0028] The guiding mechanism 44 includes a vertical guide seat 45 and a longitudinal guide seat 46. The vertical guide seat 45 and the longitudinal guide seat 46 are respectively fixedly installed on the side of the pressing main beam 41. A vertical guide strip 47 is installed at the end of the vertical guide seat 45 away from the pressing main beam 41. The vertical guide strip 47 is slidably engaged with the vertical guide plate 13. A longitudinal guide strip 48 is installed at the end of the longitudinal guide seat 46 away from the pressing main beam 41. The cross-section of the longitudinal guide strip is U-shaped. The longitudinal guide strip 48 is slidably engaged with the longitudinal guide rail 14.

[0029] The bottom of the joint channel 3 is provided with a lower beam unit 5 for supporting the thick-walled steel pipe. The lower beam unit 5 includes a bottom beam 51, a lower mold 52 for forming the thick-walled steel pipe, and a lifting wheel mechanism 53 for lifting and rotating the thick-walled steel pipe. The bottom of the bottom beam 51 is fixedly installed on the press frame 11 at the bottom of the joint channel 3. The lower mold 52 is fixedly installed on the top of the bottom beam 51. The top of the lower mold 52 is provided with a V-shaped groove 54 for positioning the thick-walled steel pipe. The lifting wheel mechanism 53 is installed on the upper part of the bottom beam 51.

[0030] The lifting wheel mechanism 53 includes a mounting base 55, a cylinder mounting plate 56, a wheel seat 57, a lifting cylinder 58, and a lifting wheel 59. The mounting base 55 is fixedly installed on the top of the bottom beam 51. Two parallel guide sleeves 510 are installed in the mounting base 55, and a wheel seat 57 is fitted in each guide sleeve 510. The lifting wheel 59 is rotatably mounted on the top of the wheel seat 57 via an axle. The bottom end of the wheel seat 57 is connected to the lifting cylinder mounting plate 56. The front flange of the lifting cylinder 58 is installed on the cylinder mounting plate 56, and the piston rod of the lifting cylinder 58 is connected to the bottom of the mounting base 55. When the lifting cylinder 58 extends, the cylinder mounting plate drives the wheel seat to move downward, and the lifting wheel separates from the thick-walled steel pipe. When the lifting cylinder 58 retracts, the cylinder mounting plate drives the wheel seat to move upward, and the lifting wheel lifts the thick-walled steel pipe upward.

[0031] Multiple pairs of conveyor roller units 6 and multiple pairs of rotary roller units 7 symmetrical about the lower beam unit 5 are installed between the lower beam unit 5 and the connecting beam 2. There is at least one pair of conveyor roller units 6 and one pair of rotary roller units 7 between any two adjacent press units.

[0032] The conveying roller unit 6 includes a first base 61, a first pressure plate 62, and a first wheel seat 63. The first end of the first base 61 is connected to the side of the bottom beam 51 by bolts, and the tail end of the first base 61 is installed on the top of the connecting beam 2 by bolts. A first lead screw 64 is rotatably installed in the first base 61, and a first movable reduction motor 65 is installed at the tail end of the first base 61. The motor shaft of the first movable reduction motor 65 is connected to the lead screw of the first lead screw 64 through a first coupling 66. The first pressure plate 62 is installed on the top of the first base 61 to form a first guide groove 67 between the first pressure plate 62 and the top of the first base 61. The first wheel seat 63 is slidably installed in the first guide groove 67. The lead screw nut of the first lead screw 64 is connected to the bottom end of the first wheel seat 63. A conical wheel 68 is rotatably installed at the first end of the first wheel seat 63, and a conveying reduction motor 69 is installed at the tail end of the first wheel seat 63. The motor shaft of the conveying reduction motor 69 is connected to the conical wheel 68 through a second coupling 610. When the first moving reduction motor 65 rotates in the forward direction, it drives the first lead screw to rotate, causing the first wheel seat to move closer to the bottom beam, thereby making the cone wheel 68 contact the thick-walled steel pipe for conveying; after the conveying is completed, when the first moving reduction motor 65 rotates in the reverse direction, it drives the first lead screw to rotate, causing the first wheel seat to move away from the bottom beam, thereby making the cone wheel 68 separate from the thick-walled steel pipe.

[0033] The rotating roller unit 7 includes a second base 71, a second pressure plate 72, and a second wheel seat 73. The first end of the second base 71 is connected to the side of the bottom beam 51 by bolts, and the tail end of the second base 71 is bolted to the top of the connecting beam 2. A second lead screw 74 is rotatably mounted in the second base 71, and a second moving reduction motor 75 is mounted at the tail end of the second base 71. The motor shaft of the second moving reduction motor 75 is connected to the lead screw of the second lead screw 74 through a third coupling 76. The second pressure plate 72 is installed at the top of the second base 71, forming a second guide groove 77 between the second pressure plate 72 and the top of the second base 71. The second wheel seat 73 slides... The second lead screw 74 is rotatably installed in the second guide groove 77. The lead screw nut of the second lead screw 74 is connected to the bottom end of the second wheel seat 73. A rotating roller 78 is rotatably installed at the head of the second wheel seat 73. A rotary reduction motor 79 is installed at the tail of the second wheel seat 73. A first sprocket 710 is installed on the power output shaft of the rotary reduction motor 79. A second sprocket 711 is installed at one end of the axle of the rotating roller 78. The first sprocket 710 and the second sprocket 711 are connected by a transmission chain 712. A chain cover 713 is also installed on the second wheel seat 73. The chain cover 713 covers the first sprocket 710, the second sprocket 711, and the transmission chain 712. When the second moving reduction motor 75 rotates in the forward direction, it drives the second lead screw to rotate, causing the second wheel seat to move closer to the bottom beam, thereby making the rotating roller 78 contact with the thick-walled steel pipe and allowing the rotating roller 78 to rotate; after the rotation is completed, when the second moving reduction motor 75 rotates in the reverse direction, it drives the second lead screw to rotate, causing the second wheel seat to move away from the bottom beam, thereby separating the rotating roller 78 from the thick-walled steel pipe.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A butt-joining machine for thick-walled steel pipes, characterized by: The application relates to a thick-walled steel pipe joint pressing device, which comprises a plurality of "back" shaped pressing machine units, the plurality of pressing machine units are connected in series through connecting beams to form a joint channel, the top of the joint channel is provided with a pressing slide for pressing and deforming the thick-walled steel pipe, the pressing slide is connected with a main oil cylinder installed on the top of the pressing machine unit, and the pressing slide is slidably matched with the inside of the pressing machine unit; the bottom of the joint channel is provided with a lower beam unit for supporting the thick-walled steel pipe, a plurality of pairs of conveying roller units and a plurality of pairs of rotating roller units which are symmetrical about the lower beam unit are installed between the lower beam unit and the connecting beams.

2. The heavy wall steel pipe butt joining machine according to claim 1, characterized by: The pressing machine unit comprises a "back" shaped pressing machine frame, a main oil cylinder for providing joint pressing force, two vertically symmetrical vertical guide plates and two vertically symmetrical longitudinal guide rails, the main oil cylinder is installed on the top of the pressing machine frame, the two vertical guide plates are respectively installed on the two sides of the inside of the pressing machine frame, and the two longitudinal guide rails are respectively installed on the two vertical guide plates.

3. The heavy wall steel pipe butt joining machine according to claim 2, characterized by: The pressing slide comprises a pressing main beam and a pressing die, the pressing main beam is connected with the piston rod of the main oil cylinder through a ball hinge mechanism, the pressing die is installed at the bottom end of the pressing main beam, a plurality of groups of guide mechanisms which are symmetrically arranged about the pressing main beam are installed on the left and right sides of the pressing main beam, and the guide mechanisms are slidably matched with the vertical guide plates and the longitudinal guide rails.

4. The heavy wall steel pipe butt-seam welder of claim 3, wherein: The guide mechanism comprises a vertical guide seat and a longitudinal guide seat, the vertical guide seat and the longitudinal guide seat are respectively fixedly installed on the side surface of the pressing main beam, a vertical guide strip is installed at the end of the vertical guide seat away from the pressing main beam, and the vertical guide strip is slidably matched with the vertical guide plate; a longitudinal guide strip is installed at the end of the longitudinal guide seat away from the pressing main beam, and the longitudinal guide strip is slidably matched with the longitudinal guide rail.

5. The heavy wall steel pipe butt-seam welder of claim 2 wherein: The lower beam unit comprises a bottom beam, a lower die for forming the thick-walled steel pipe and a jacking wheel mechanism for jacking and rotating the thick-walled steel pipe, the bottom of the bottom beam is fixedly installed on the pressing machine frame at the bottom of the joint channel, the lower die is fixedly installed at the top end of the bottom beam, the top end of the lower die is provided with a V-shaped groove for positioning the thick-walled steel pipe, and the jacking wheel mechanism is installed on the upper portion of the bottom beam.

6. The heavy wall steel pipe butt-seam welder of claim 5, wherein: The jacking wheel mechanism comprises a mounting seat, an oil cylinder mounting plate, a wheel seat, a jacking oil cylinder and a jacking wheel, the mounting seat is fixedly installed on the top of the bottom beam, two mutually parallel guide sleeves are installed in the mounting seat, a wheel seat is sleeved in each guide sleeve, the jacking wheel is rotatably installed on the top of the wheel seat through a wheel shaft, the bottom end of the wheel seat is connected with the jacking oil cylinder mounting plate, the front flange of the jacking oil cylinder is installed on the oil cylinder mounting plate, and the piston rod of the jacking oil cylinder is connected with the bottom of the mounting seat.

7. The heavy wall steel pipe butt-seam welder of claim 5 wherein: The conveying roller unit comprises a first base, a first pressing plate and a first wheel seat, the first end of the first base is connected to the side surface of the bottom beam through a bolt, and the tail of the first base is installed at the top end of the connecting beam through a bolt; a first lead screw is rotatably installed in the first base, a first moving reduction motor is installed at the tail end of the first base, the motor shaft of the first moving reduction motor is connected to the screw rod of the first lead screw through a first coupling; the first pressing plate is installed at the top end of the first base to form a first guide groove between the first pressing plate and the top of the first base, the first wheel seat is slidingly installed in the first guide groove, the screw nut of the first lead screw is connected to the bottom end of the first wheel seat, a cone wheel is rotatably installed at the first end of the first wheel seat, and a conveying reduction motor is installed at the tail end of the first wheel seat, the motor shaft of the conveying reduction motor is drivingly connected to the cone wheel through a second coupling.

8. The heavy wall steel pipe butt-seam welder of claim 5 wherein: The rotating roller unit comprises a second base, a second pressing plate and a second wheel seat, the first end of the second base is connected to the side surface of the bottom beam through a bolt, and the tail of the second base is installed at the top end of the connecting beam through a bolt; a second lead screw is rotatably installed in the second base, a second moving reduction motor is installed at the tail end of the second base, the motor shaft of the second moving reduction motor is connected to the screw rod of the second lead screw through a third coupling; the second pressing plate is installed at the top end of the second base to form a second guide groove between the second pressing plate and the top of the second base, the second wheel seat is slidingly installed in the second guide groove, the screw nut of the second lead screw is connected to the bottom end of the second wheel seat, a rotating roller is rotatably installed at the first end of the second wheel seat, a rotating reduction motor is installed at the tail end of the second wheel seat, a first sprocket is installed on the power output shaft of the rotating reduction motor, a second sprocket is installed at one end of the axle of the rotating roller, the first sprocket and the second sprocket are drivingly connected through a transmission chain, and a chain cover is further installed on the second wheel seat, the chain cover covers the first sprocket, the second sprocket and the transmission chain.

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