A porous thin-walled steel pipe preparation device and process for manufacturing a perforated steel strip composite pipe

Abstract

The present invention belongs to the technical field of steel pipe processing, and relates to a porous thin-walled steel pipe preparation device and process for manufacturing a perforated steel strip composite pipe, comprising a base, one end of the base is connected to a support cylinder for winding a punched steel strip, the support cylinder is connected to an arc-shaped baffle arranged in a spiral and inclined manner along the circumference of the support cylinder, a plurality of support frames respectively located on both sides of the support cylinder are provided on the base, an electric shaft roller is installed on the support frame, and the electric shaft roller has a spiral portion; a feeding assembly inclined to the support cylinder is provided on the base, and a vertical plate is connected to the base, and an external electric welding gun for welding the outer side of the steel strip wound on the support cylinder is installed on the vertical plate. The steel strip is caused to move in a spiral along the support cylinder by the friction of the spiral portion on the electric shaft roller, so that the steel strip is more efficiently and stably spirally wound on the support cylinder; and the spiral welding method ensures the uniformity of the compressive strength of the porous thin-walled steel pipe, and reduces the lateral arrangement space and process flow required for linear winding.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel pipe processing, and in particular, relates to a device and process for preparing a porous thin-walled steel pipe for manufacturing a mesh steel strip composite pipe. Background Art

[0002] The perforated steel belt polyethylene composite pipe is a composite pipe with a perforated tube welded with cold-rolled steel belt as a reinforced skeleton and composite thermoplastic plastic. Due to the introduction of the reinforced skeleton, the compressive strength and creep resistance of the pipe are significantly improved; when preparing the reinforced skeleton (porous thin-walled steel pipe), it is necessary to punch holes on the processed steel belt according to the design requirements to form a porous structure to increase the contact area with the plastic layer and improve the bonding strength; then the punched steel belt is bent and welded into a tubular structure to prepare a porous thin-walled steel pipe.

[0003] However, at present, when bending and welding the steel strip into a tubular structure, most of the two sides of the steel strip are directly bent and welded together. For example, the patent with patent publication number CN113680849B and publication date 2023-11-10 discloses a steel pipe forming device. In the step of bending and welding the steel strip into a tubular structure, the steel pipe forming device not only requires multiple vertical forming rollers and horizontal forming rollers to adaptively bend the two sides of the steel strip, which occupies a large area and has a long process flow, but also the weld is located in a straight line on one side of the steel pipe, thereby affecting the uniformity of the compressive strength, resulting in lower compressive strength on the side with the weld.

[0004] In addition, there are some existing devices that spirally bend and weld steel strips into tubular structures. However, the working efficiency is low during the process of spirally conveying the steel strip, and the steel strip cannot be bent quickly and stably. The welded part of the steel strip needs to be relied on to stabilize the unwelded part. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and to provide a porous thin-walled steel pipe preparation device and process for manufacturing a perforated steel strip composite pipe that allows the welds to be evenly arranged on the steel pipe, ensuring the uniformity of the compressive strength, and high transportation efficiency and stability.

[0006] In order to solve the above technical problems, the present invention provides a porous thin-walled steel pipe preparation device for manufacturing a perforated steel strip composite pipe, comprising a base, one end of the base is connected to a support cylinder for winding the punched steel strip, the upper side of the support cylinder is connected to an arc-shaped baffle arranged in a spiral and inclined manner along the circumference of the support cylinder, a plurality of support frames are provided on the base, which are respectively located on the front and rear sides of the support cylinder, and electric shaft rollers are installed on the support frame. The electric shaft rollers on the front and rear sides of the support frame are staggered, and the electric shaft rollers on the front and rear sides of the support frame have left-handed spiral portions, which are spiral grooves or spiral sleeves; a feeding assembly inclined to the support cylinder is provided on the base, and the feeding assembly is used to transport the punched steel strip from back to front to the support cylinder in the axial direction of the inclined support cylinder, a vertical plate is connected to the upper rear side of the base, and an external electric welding gun for welding the outer side of the steel strip wound on the support cylinder is installed on the vertical plate, and the height from the muzzle of the external electric welding gun to the upper side of the base is the same as the height from the center of the support cylinder to the upper side of the base.

[0007] Preferably, the feeding assembly includes a bracket, which is connected to the base. The upper part of the bracket has two conveying shaft rollers that rotate up and down and are opposite to each other. The front ends of the two conveying shaft rollers are connected to gears, and the two gears are meshed with each other. A servo motor is installed on the upper part of the bracket, and the output shaft of the servo motor is connected to one of the two conveying shaft rollers.

[0008] Preferably, a support frame is also included, a notch is opened on the upper right end of the support tube, the support frame is connected to the inside of the support tube, and an internal electric welding gun for welding the inner side of the steel strip wound on the support tube is provided on the upper right side of the support frame.

[0009] Preferably, it also includes an expansion cylinder, which is sleeved on the support cylinder, and the expansion cylinder is installed on the support cylinder by bolts, and a notch is opened on the expansion cylinder, and the notch on the expansion cylinder corresponds to the notch on the support cylinder, and the expansion cylinder replaces the support cylinder to support the steel belt; an electric screw rod is installed on the support frame, and a sliding sleeve is threadedly connected to the electric screw rod, and a vertical electric guide rail is installed on the support frame, and a lifting plate is connected to the sliding part of the electric guide rail, and a sliding table sliding on the sliding sleeve slides on the lifting plate, and the slide is suitable for moving left and right along the lifting plate, and the sliding direction of the slide on the sliding sleeve is perpendicular to the sliding direction of the slide on the lifting plate, and the inner welding gun is installed on the upper side of the slide; the support frame is slidably arranged on the base, and a dovetail groove is opened on the base, and a dovetail block slidably arranged on the dovetail groove of the base is connected to the lower side of the support frame, and the support frame is slidably arranged on the dovetail groove of the base through the dovetail block, and the external welding gun is movably arranged on the vertical plate.

[0010] Preferably, it also includes an electric screw rod 2, which is installed on the base between the support frames on the front and rear sides of the support tube, and the electric screw rod 2 is threadedly connected with sliders with the same number as the support frames, and connecting rods are provided between the sliders for rotation one by one with the support frames.

[0011] Preferably, it also includes a guide sleeve, which is connected to the support frame close to the vertical plate, and the inner welding gun is connected to a slide plate which is slidably arranged on the guide sleeve.

[0012] Preferably, a mounting frame is also included, one end of the base is connected to the mounting frame with a built-in cooling module, the feeding assembly and the mounting frame are respectively located at the left and right ends of the base, and the first side of the mounting frame is connected to two front and rear opposite guide frames, two upper and lower opposite slides are slid on the guide frame, a spring located in the guide frame is connected between the two slides on the rear side, the spring is used for resetting the slide after sliding, and a guide roller is rotatable on the upper and lower slides.

[0013] Preferably, it also includes a resistance rod, two slide seats on the rear guide frame are connected to the resistance rod, the guide sleeve is connected to an extrusion frame suitable for extruding the two resistance rods away from each other, the extrusion frame has a U-shaped extrusion part, and the two resistance rods are respectively on the upper and lower sides of the extrusion part of the extrusion frame.

[0014] Preferably, it also includes a guide frame 2, and two guide frames 2 opposite to each other up and down are connected to the second side of the mounting frame, the guide frame 2 is perpendicular to the guide frame 1, and two slide seats 2 opposite to each other slide on the guide frame 2, and a spring 2 located in the guide frame 2 is connected between the two slide seats 1 on the upper side, and the spring 2 is used for resetting the slide seat 2 after sliding, and guide rollers 2 are rotatable on the front and rear slide seats 2; the two slide seats 2 on the upper guide frame 2 are connected to the resistance rods 2, and the upper slide seat 1 is connected to an extrusion frame 2 suitable for extruding the two resistance rods 2 away from each other.

[0015] The present invention also provides a process for preparing a porous thin-walled steel pipe for manufacturing the above-mentioned perforated steel strip composite pipe, comprising:

[0016] S1) using the arc-shaped baffle on the support tube to support and guide the punched steel belt, and spirally winding the punched steel belt on the support tube in a direction inclined to the axial direction of the support tube;

[0017] S2) Control the electric rollers on both sides of the support drum to rotate and convey the steel belt, and the spiral part on the electric rollers makes the steel belt more efficiently and tightly wound around the support drum;

[0018] S3) The outer electric welding gun contacts the outer side of the gap of the steel strip, and controls the outer electric welding gun to weld the gaps on the wound steel strip together to make the steel strip into a tubular structure.

[0019] The present invention overcomes the shortcomings of the prior art and can achieve the following beneficial effects:

[0020] 1. The friction of the spiral part on the electric shaft roller makes the steel belt move spirally along the support tube, so that it can be spirally wound on the support tube more efficiently and stably; and the spiral welding method ensures the uniformity of the compressive strength of the porous thin-walled steel pipe, reducing the lateral arrangement space and process flow required for linear winding.

[0021] 2. When the steel strip is wound on the support tube, the inner electric welding gun contacts the inner side of the gap of the steel strip, and controls the inner electric welding gun to weld the gaps on the wound steel strip together, so that the inner and outer sides of the steel strip can be welded at the same time in cooperation with the outer electric welding gun, thereby improving the stability of the porous thin-walled steel pipe.

[0022] 3. Replace expansion tubes of different sizes to adapt to the preparation of porous thin-walled steel pipes of different sizes; adjust the positions of the inner welding gun, outer welding gun, and electric shaft roller to weld and support and guide steel pipes of different sizes, and diversify the usage methods.

[0023] 4. Use mutually perpendicular guide rollers 1 and 2 to support the welded porous thin-walled steel pipe, and use the built-in cooling module of the mounting frame to assist in cooling and forming the porous thin-walled steel pipe. When adjusting the electric shaft roller, guide roller 1 and guide roller 2 are adjusted synchronously, with a high degree of adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an assembly schematic diagram of the present invention.

[0025] Figure 2 It is a left view of the present invention.

[0026] Figure 3 It is a top view of the present invention.

[0027] Figure 4 It is a schematic diagram of the support cylinder, arc-shaped baffle and expansion cylinder of the present invention.

[0028] Figure 5 It is a cross-sectional view of the support tube of the present invention.

[0029] Figure 6 It is a schematic diagram of the separation of the support tube and the expansion tube of the present invention.

[0030] Figure 7 It is a schematic diagram of the separation of the sliding sleeve and the sliding table of the present invention.

[0031] Figure 8 It is a cross-sectional view of the base of the present invention.

[0032] Fig. 9 It is a schematic diagram of the electric screw rod 2, the slider and the connecting rod in the upward direction of the present invention.

[0033] Fig.10 It is a schematic diagram of the rear side of the present invention.

[0034] Fig.11 It is a schematic diagram of a guide roller 1, a resistance rod 1 and an extrusion frame 1 of the present invention.

[0035] Fig.12 It is a schematic diagram of the second guide roller, the second abutment rod and the second extrusion frame of the present invention.

[0036] The markings in the drawings provided by the present invention are: 1-base, 10-vertical plate, 2-support cylinder, 20-expansion cylinder, 21-arc baffle, 22-support frame, 23-inner welding gun, 24-electric screw rod, 25-sliding sleeve, 26-electric guide rail, 27-lifting plate, 28-slide, 31-support frame, 32-electric shaft roller, 320-spiral groove, 4-feeding assembly, 41-bracket, 42-conveying shaft roller, 43-gear, 44-servo Servo motor, 51-external welding gun, 52-guide sleeve, 53-slide plate, 61-electric screw rod 2, 62-slider, 63-connecting rod, 71-mounting frame, 72-guide frame 1, 73-slide seat 1, 74-spring 1, 75-guide roller 1, 76-resistance rod 1, 77-extrusion frame 1, 81-guide frame 2, 82-slide seat 2, 83-spring 2, 84-guide roller 2, 85-resistance rod 2, 86-extrusion frame 2, 100-steel belt. DETAILED DESCRIPTION

[0037] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0038] In addition, the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. It should be noted that the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] A porous thin-walled steel pipe preparation device for manufacturing a mesh steel strip composite pipe, such as Figure 1-Figure 4As shown, it includes a base 1, a vertical plate 10, a support cylinder 2, an arc-shaped baffle plate 21, a support frame 31, an electric shaft roller 32, a feeding assembly 4 and an external electric welding gun 51. One end of the base 1 is connected to a support cylinder 2 for winding a punched steel strip 100. The upper side of the support cylinder 2 is connected to an arc-shaped baffle plate 21 that is spirally inclined along the circumference of the support cylinder 2. The right side of the arc-shaped baffle plate 21 is used to resist and guide the steel strip 100, and then the steel strip 100 is operated to spirally wind on the support cylinder 2 from left to right from the upper left end of the support cylinder 2 in the axial direction of the support cylinder 2. The base 1 is provided with a plurality of support frames 31 respectively located on the front and rear sides of the support cylinder 2. An electric shaft roller 32 is installed on the frame 31, and the electric shaft rollers 32 on the front and rear sides of the support frame 31 are staggered. The electric shaft rollers 32 on the front and rear sides of the support cylinder 2 are controlled to rotate to transport the steel belt 100 on the support cylinder 2 from left to right. During this process, the front electric shaft roller 32 rotates clockwise, and the rear electric shaft roller 32 rotates counterclockwise. The electric shaft rollers 32 on the front and rear sides have a left-handed spiral portion, and the spiral portion is a spiral groove 320 or a spiral sleeve. Therefore, the clockwise rotation of the front electric shaft roller 32 will cause the steel belt 100 on the front side of the support cylinder 2 to move right and downward through the friction of the spiral portion, while the counterclockwise rotation of the rear electric shaft roller 32 will cause the steel belt 100 on the front side of the support cylinder 2 to move right and downward through the friction of the spiral portion. The steel strip 100 on the rear side of the support tube 2 moves both rightward and upward, so that the steel strip 100 can be more efficiently and tightly wound on the support tube 2 in a spiral. In this embodiment, the spiral portion is a spiral sleeve. A feeding assembly 4 is provided on the base 1, which is inclined to the support tube 2. The feeding assembly 4 is used to transport the punched steel strip 100 from the back to the front to the support tube 2 in the axial direction of the inclined support tube 2. A vertical plate 10 is connected to the upper side of the rear of the base 1. An external electric welding gun 51 for welding the outer side of the steel strip 100 wound on the support tube 2 is installed on the vertical plate 10. The height from the muzzle of the external electric welding gun 51 to the upper side of the base 1 is the same as the height from the center of the support tube 2 to the upper side of the base 1. When the steel strip 100 is wound on the support tube 2, the external electric welding gun 51 contacts the outside of the gap of the steel strip 100, and controls the external electric welding gun 51 to weld the gaps on the wound steel strip 100 together. Since the steel strip 100 continues to move from left to right, the external electric welding gun 51 in a fixed position can continue to weld the steel strip 100, thereby spirally winding the steel strip 100 and welding it into a tubular structure. This welding process makes the weld spiral evenly located on the steel pipe, thereby ensuring the uniformity of the compressive strength of the porous thin-walled steel pipe. The spiral winding method reduces the lateral arrangement space and process flow required for linear winding, and there is no need to adaptively and gradually wind the steel strip 100.

[0040] like Figure 2As shown, the feeding assembly 4 includes a bracket 41, a conveying shaft roller 42, a gear 43 and a servo motor 44. The bracket 41 is connected to the base 1. The upper part of the bracket 41 has two conveying shaft rollers 42 that rotate up and down and face each other, so that the punched steel belt 100 passes through the two conveying shaft rollers 42 for conveying. The front ends of the two conveying shaft rollers 42 are connected to gears 43, and the two gears 43 are meshed with each other, so that the two conveying shaft rollers 42 rotate synchronously towards each other to convey the steel belt 100. A servo motor 44 is installed on the upper part of the bracket 41. The output shaft of the servo motor 44 is connected to one of the two conveying shaft rollers 42. The servo motor 44 drives the lower conveying shaft roller 42 to rotate, and the lower conveying shaft roller 42 will drive the upper conveying shaft roller 42 to rotate towards each other through the meshing of the two gears 43. In this embodiment, the output shaft of the servo motor 44 is connected to the lower conveying shaft roller 42.

[0041] like Figure 4 and Figure 5 As shown, it also includes a support frame 22 and an inner welding gun 23. A notch is opened on the upper side of the right end of the support tube 2, and the support frame 22 is connected to the inside of the support tube 2. An inner welding gun 23 for welding the inner side of the steel strip 100 wound on the support tube 2 is provided on the upper side of the right part of the support frame 22. The principle of the inner welding gun 23 is the same as that of the outer welding gun 51. Specifically, when the steel strip 100 is wound on the support tube 2, the inner welding gun 23 contacts the inner side of the gap of the steel strip 100, and the inner welding gun 23 is controlled to weld the gaps on the wound steel strip 100 together, so that the inner and outer sides of the steel strip 100 can be welded at the same time, thereby improving the stability of the porous thin-walled steel pipe.

[0042] like Figure 4-Figure 7As shown, it also includes an expansion cylinder 20, an electric screw rod 24, a sliding sleeve 25, an electric guide rail 26, a lifting plate 27 and a slide 28. The support cylinder 2 is sleeved with the expansion cylinder 20, and the expansion cylinder 20 is installed on the support cylinder 2 by bolts. A notch is opened on the expansion cylinder 20, and the notch on the expansion cylinder 20 corresponds to the notch on the support cylinder 2. The expansion cylinder 20 replaces the support cylinder 2 to support the steel belt 100. The expansion cylinders 20 of different diameters can be disassembled and assembled on the support cylinder 2 to adapt to the preparation of porous thin-walled steel pipes of different diameters; the support frame 22 is provided with a notch. An electric screw rod 24 is installed, and a sleeve 25 slidably arranged on the support frame 22 is threadedly connected to the electric screw rod 24. The sleeve 25 can be driven to move left and right along the support frame 22 by controlling the electric screw rod 24. A vertical electric guide rail 26 is installed on the support frame 22. A lifting plate 27 is connected to the sliding part of the electric guide rail 26. The lifting plate 27 can be driven to move up and down by controlling the electric guide rail 26. A slide 28 slidably arranged on the sleeve 25 slides on the lifting plate 27. The slide 28 is suitable for moving left and right along the lifting plate 27. The sliding direction on the sliding sleeve 25 is perpendicular to the sliding direction of the slide 28 on the lifting plate 27. The inner welding gun 23 is installed on the upper side of the slide 28. The sliding sleeve 25 moves left and right to drive the inner welding gun 23 to move left and right through the slide 28. The slide 28 moves left and right along the lifting plate 27 to adjust the left and right position of the inner welding gun 23. The lifting plate 27 moves up and down to drive the inner welding gun 23 to move up and down through the slide 28. The slide 28 moves up and down along the sliding sleeve 25 to adjust the up and down position of the inner welding gun 23, so as to facilitate The steel strip 100 is adaptively welded; the support frame 31 is slidably arranged on the base 1, and a dovetail groove is opened on the base 1. The lower side of the support frame 31 is connected with a dovetail block slidably arranged on the dovetail groove of the base 1. The support frame 31 is slidably arranged on the dovetail groove of the base 1 through the dovetail block. The support frame 31 is slid forward and backward to adjust the position of the electric shaft roller 32, thereby changing the distance between the electric shaft rollers 32 on the front and rear sides. The external electric welding gun 51 is movably arranged on the vertical plate 10. The position of the external electric welding gun 51 on the vertical plate 10 is adjusted to weld steel pipes of different diameters.

[0043] like Figure 8 and Fig. 9 As shown, it also includes an electric screw rod 2 61, a slider 62 and a connecting rod 63. The base 1 is provided with an electric screw rod 2 61 located between the support frames 31 on the front and rear sides of the support tube 2. The electric screw rod 2 61 is threadedly connected with sliders 62 of the same number as the support frames 31. The sliders 62 are rotatably arranged with the support frames 31 in a one-to-one correspondence. When it is necessary to increase the spacing between the front and rear electric shaft rollers 32 to act on the porous thin-walled steel pipe with a larger diameter, the electric screw rod 2 61 is controlled to drive the slider 62 to move left. The slider 62 will drive the front and rear support frames 31 through the connecting rod 63 to drive the front and rear electric shaft rollers 32 away from each other. In this way, only controlling the electric screw rod 2 61 can synchronously increase the spacing between the front and rear electric shaft rollers 32.

[0044] like Fig.10 and Fig.11 As shown, it also includes a guide sleeve 52 and a slide plate 53. The guide sleeve 52 is connected to the support frame 31 close to the vertical plate 10, and the inner welding gun 23 is connected to the slide plate 53 slidably arranged on the guide sleeve 52. When the support frames 31 on the front and rear sides respectively drive the front and rear electric shaft rollers 32 to move away from each other, the support frame 31 on the rear side will drive the slide plate 53 to move backward through the guide sleeve 52, and the slide plate 53 will drive the inner welding gun 23 to move backward, so as to synchronously adjust the front and rear positions of the inner welding gun 23, and then slide the slide plate 53 left and right on the guide sleeve 52, and the slide plate 53 will drive the inner welding gun 23 to move left and right, so as to adjust the left and right positions of the inner welding gun 23, so that the gun head of the inner welding gun 23 can correspond to steel strips 100 of different diameters for welding.

[0045] like Fig.10 and Fig.11 As shown, it also includes a mounting frame 71, a guide frame 72, a slide seat 73, a spring 74 and a guide roller 75. One end of the base 1 is connected to the mounting frame 71 with a built-in cooling module. The feeding assembly 4 and the mounting frame 71 are respectively located at the left and right ends of the base 1. After welding, the porous thin-walled steel pipe will pass through the mounting frame 71 from left to right. The built-in cooling module of the mounting frame 71 is used to assist in cooling and forming the porous thin-walled steel pipe. The first side (left side) of the mounting frame 71 is connected to two front A guide frame 72 is arranged opposite to the rear, and two slide seats 73 are slidably arranged opposite to each other up and down on the guide frame 72. A spring 74 located inside the guide frame 72 is connected between the two slide seats 73 at the rear side, and the spring 74 is used for resetting the slide seat 73 after sliding. Guide rollers 75 are rotatably arranged on the upper and lower slide seats 73, and the porous thin-walled steel pipe passing through the front of the mounting frame 71 is clamped by the guide rollers 75 on the upper and lower sides for adaptive centering support, thereby improving the stability of the transportation of the porous thin-walled steel pipe.

[0046] like Fig.10 and Fig.11 As shown, it also includes a resistance rod 76 and an extrusion frame 77. The two slide seats 73 on the rear guide frame 72 are both connected with a resistance rod 76. The guide sleeve 52 is connected with an extrusion frame 77 suitable for extruding the two resistance rods 76 away from each other. The extrusion frame 77 has an extrusion portion in a U-shape. The two resistance rods 76 respectively extrudes the upper and lower sides of the extrusion portion of the extrusion frame 77. When welding a steel pipe with a larger diameter, the rear support frame 31 moves backward and drives the extrusion frame 77 to move backward through the guide sleeve 52 to squeeze the upper and lower resistance rods 76 away from each other. The upper and lower resistance rods 76 respectively drive the guide rollers 75 on the upper and lower sides to move away from each other through the slide seat 73, so as to adaptively clamp steel pipes of different diameters and eliminate additional adjustment operations.

[0047] like Fig.10 and Fig.12 As shown, it also includes a guide frame 81, a slide 82, a spring 83, a guide roller 84, a contact rod 85 and a squeeze frame 86. The second side (right side) of the mounting frame 71 is connected with two guide frames 81 facing each other up and down. The guide frame 81 is perpendicular to the guide frame 72. Two slides 82 facing each other front and back slide 82 slide on the guide frame 81. A spring 83 located in the guide frame 81 is connected between the two slides 73 on the upper side. The spring 83 is used for resetting the slide 82 after sliding. The front and rear slides 82 are both rotated with guide rollers 84. The guide rollers 84 on the front and rear sides clamp the porous thin-walled steel pipe passing through the mounting frame 71 to perform adaptive centering and limiting. , further improving the stability of the transportation of porous thin-walled steel pipes; the two slides 82 on the upper guide frame 81 are both connected with a resistance rod 85, and the upper slide 73 is connected with an extrusion frame 86 suitable for extruding the two resistance rods 85 away from each other. When welding a steel pipe with a larger diameter, the slides 73 on the upper and lower sides respectively drive the guide rollers 75 on the upper and lower sides to move away from each other, and the upper slide 73 moves upward to drive the extrusion frame 86 to move upward to extrude the front and rear resistance rods 85 away from each other, and the front and rear resistance rods 85 respectively drive the front and rear guide rollers 84 on the front and rear sides to move away from each other through the slide 82, so as to adaptively clamp steel pipes of different diameters and eliminate additional adjustment operations.

[0048] A process for preparing a porous thin-walled steel pipe for manufacturing the above-mentioned perforated steel strip composite pipe comprises:

[0049] S1) using the arc-shaped baffle plate 21 on the support tube 2 to resist and guide the punched steel strip, and spirally winding the punched steel strip on the support tube 2 in a direction inclined to the axial direction of the support tube 2;

[0050] S2) controlling the electric shaft rollers 32 on both sides of the support drum 2 to rotate and convey the steel belt, so that the steel belt is more efficiently and tightly wound around the support drum 2 through the spiral parts on the electric shaft rollers 32;

[0051] S3) The outer welding gun 51 contacts the outer side of the gap of the steel strip, and controls the outer welding gun 51 to weld the gaps on the wound steel strip together so that the steel strip has a tubular structure.

[0052] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. They only express the preferred implementation modes of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention.

[0053] It should be pointed out that, for ordinary technicians in this field, several modifications, increases and decreases in quantity, improvements and substitutions can be made without departing from the concept of the present invention. Therefore, based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection of the present invention.

Claims

1. A porous thin-walled steel pipe preparation device for manufacturing a mesh steel strip composite pipe, characterized in that: The invention comprises a base (1), one end of the base (1) is connected to a support cylinder (2) for winding a punched steel strip (100), the support cylinder (2) is connected to an arc-shaped baffle (21) which is arranged in a spiral and inclined manner along the circumference of the support cylinder (2), the base (1) is provided with a plurality of support frames (31) respectively located on both sides of the support cylinder (2), the support frames (31) are provided with electric shaft rollers (32), and the electric shaft rollers (32) have a spiral portion; the base (1) is provided with a feeding assembly (4) inclined with respect to the support cylinder (2), the base (1) is connected to a vertical plate (10), and the vertical plate (10) is provided with an external electric welding gun (51) for welding the outer side of the steel strip (100) wound on the support cylinder (2); It also includes a support frame (22), a notch is formed on the support tube (2), the interior of the support tube (2) is connected to the support frame (22), and the support frame (22) is provided with an internal electric welding gun (23) for welding the inner side of the steel strip (100) wound on the support tube (2).

2. The porous thin-walled steel pipe preparation device for manufacturing a mesh steel strip composite pipe according to claim 1, characterized in that: The feeding assembly (4) comprises a bracket (41), the bracket (41) is connected to the base (1), the upper part of the bracket (41) is provided with two conveying shaft rollers (42) which are rotatable relative to each other, the front ends of the two conveying shaft rollers (42) are both connected to gears (43), the two gears (43) are meshed with each other, and the upper part of the bracket (41) is provided with a servo motor (44), the output shaft of the servo motor (44) is connected to one of the two conveying shaft rollers (42).

3. The porous thin-walled steel pipe preparation device for manufacturing a perforated steel strip composite pipe according to claim 1, characterized in that: The invention also comprises an expansion tube (20), the expansion tube (20) being sleeved on the support tube (2), the expansion tube (20) being mounted on the support tube (2), the expansion tube (20) being provided with a notch, the notch on the expansion tube (20) corresponding to the notch on the support tube (2); an electric screw rod (24) being mounted on the support frame (22), the electric screw rod (24) being threadedly connected with a sliding sleeve (25) slidably mounted on the support frame (22), a vertical electric guide rail (26) being mounted on the support frame (22), a lifting plate (27) being connected to the sliding member of the electric guide rail (26), a sliding table (28) slidably mounted on the sliding sleeve (25) being slidably mounted on the lifting plate (27), and an inner electric welding gun (23) being mounted on the sliding table (28); a support frame (31) being slidably mounted on the base (1), and an outer electric welding gun (51) being movably mounted on the vertical plate (10).

4. The porous thin-walled steel pipe preparation device for manufacturing a mesh steel strip composite pipe according to claim 3 is characterized in that: The invention also comprises a second electric screw rod (61), the second electric screw rod (61) being mounted on the base (1) and being located between the support frames (31) on both sides of the support tube (2), the second electric screw rod (61) being threadedly connected with sliders (62) having the same number as the support frames (31), and connecting rods (63) being rotatably arranged between the sliders (62) and the support frames (31) in a one-to-one correspondence.

5. The porous thin-walled steel pipe preparation device for manufacturing a mesh steel strip composite pipe according to claim 4, characterized in that: It also includes a guide sleeve (52), which is connected to a support frame (31) close to the vertical plate (10), and a slide plate (53) slidably arranged on the guide sleeve (52) is connected to the inner welding gun (23).

6. The porous thin-walled steel pipe preparation device for manufacturing a mesh steel strip composite pipe according to claim 5, characterized in that: The invention also comprises a mounting frame (71), one end of the base (1) is connected to the mounting frame (71) with a built-in cooling module, the feeding assembly (4) and the mounting frame (71) are respectively located at two ends of the base (1), a first side of the mounting frame (71) is connected to a guide frame (72), two opposing slide seats (73) are slidably disposed on the guide frame (72), a spring (74) is connected between the two slide seats (73), and guide rollers (75) are rotatably disposed on the two slide seats (73).

7. The device for preparing a porous thin-walled steel pipe for manufacturing a perforated steel strip composite pipe according to claim 6, characterized in that: It also includes a resistance rod (76), two slide seats (73) on the guide frame (72) are both connected to the resistance rod (76), and the guide sleeve (52) is connected to an extrusion frame (77) suitable for extruding the two resistance rods (76) away from each other.

8. The device for preparing a porous thin-walled steel pipe for manufacturing a perforated steel strip composite pipe according to claim 7, characterized in that: The second guide frame (81) is also included. The second side of the mounting frame (71) is connected to the second guide frame (81). The second guide frame (81) is perpendicular to the first guide frame (72). Two opposing second slide seats (82) are slidably mounted on the second guide frame (81). A second spring (83) is connected between the two first slide seats (73). Two guide rollers (84) are rotatably mounted on the two second slide seats (82). The two second slide seats (82) on the second guide frame (81) are connected to two abutment rods (85). The first slide seat (73) is connected to a pressing frame (86) suitable for pressing the two second abutment rods (85) away from each other.

9. A process for manufacturing a mesh steel belt used in any one of the porous thin-walled steel pipe manufacturing devices according to claim 1 to claim 8, characterized in that: Included are: S1) using the arc-shaped baffle plate (21) on the support tube (2) to resist and guide the punched steel belt (100), and spirally winding the punched steel belt (100) on the support tube (2) in a direction inclined in the axial direction of the support tube (2); S2) controlling the electric shaft rollers (32) on both sides of the support cylinder (2) to rotate and convey the steel belt (100), so that the steel belt (100) is more efficiently and tightly wound around the support cylinder (2) through the spiral parts on the electric shaft rollers (32); S3) the outer welding gun (51) contacts the outer side of the gap of the steel strip (100), and controls the outer welding gun (51) to weld the gaps on the wound steel strip (100) together so that the steel strip (100) is formed into a tubular structure.

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