A manufacturing device applied to an abrasion-resistant composite pipe

Abstract

This invention discloses a manufacturing apparatus for wear-resistant composite pipes, relating to the technical field of explosively welded composite plates. The apparatus includes a top beam with several evenly distributed mounting frames at its bottom end. Several clamping platforms are arranged inside the mounting frames. The mounting frames and clamping platforms are used to fix the rolled explosively welded composite plates. Crossbeams are provided at both ends of the top beam, and guide rails are provided at the bottom ends of the crossbeams. The guide rails are parallel to the straight direction of the top beam, and supports are slidably mounted at the top ends of the guide rails. The double-head welding assembly of this invention uses gears and a bidirectional adjusting toothed plate to achieve opposite positional adjustments of the two welding heads along the guide plate. This ensures that the distance between the two welding heads and the upper and lower surfaces of the composite plate changes synchronously, allowing the welding of different materials in the composite plate to be staggered, avoiding material fusion defects caused by simultaneous welding.

Description

Technical Field

[0001] This invention relates to the technical field of explosive composite plate welding, and in particular to a manufacturing apparatus for wear-resistant composite pipes. Background Technology

[0002] Wear-resistant composite pipelines are composite structures made of different materials. Carbon steel is typically used as the base layer to provide strength support, while stainless steel, nickel-based alloys, or wear-resistant alloys are used as the cladding to improve the pipeline's corrosion resistance and wear resistance. This type of pipeline structure has wide applications in fields with severe abrasive conditions, such as heavy media coal preparation, oil and gas gathering and transportation, and seawater desalination. The explosive bonding and welding method is one of the main methods for manufacturing wear-resistant composite pipelines. This involves first explosively welding the base layer and cladding to form an explosive bonding plate, then rolling the composite plate into a circular tube shape and welding the longitudinal seams.

[0003] However, existing technologies still have many problems in the beveling and welding processes of exploded composite plates. First, beveling and welding are usually separate processes, requiring multiple clamping and positioning, resulting in long processing cycles and low production efficiency. Since exploded composite plates are composed of two or more different materials, the physical properties of the base layer and the cladding layer differ significantly, which can easily cause heat concentration, welding deformation, or even cracking during welding. Existing equipment cannot simultaneously process the bevels on both the inner and outer sides of the composite plate or perform staggered welding of different material layers, leading to unstable weld fusion quality and low bonding strength between the wear-resistant layer and the substrate. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or existing manufacturing apparatuses for wear-resistant composite pipes, the present invention is proposed.

[0006] Therefore, the problem to be solved by the present invention is how to solve the problem that existing devices are unable to simultaneously process the bevels on both the inner and outer sides of the composite plate and to perform staggered welding of different material layers, resulting in unstable weld fusion quality and low bonding strength between the wear-resistant layer and the substrate.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a manufacturing device for wear-resistant composite pipes, comprising a top beam with several evenly distributed mounting frames at its bottom end, several clamping tables inside the mounting frames, the mounting frames and clamping tables for fixing the rolled explosive composite plate, crossbeams at both ends of the top beam, guide rails at the bottom ends of the crossbeams, the guide rails being parallel to the straight direction of the top beam, a bracket slidably mounted on the top end of the guide rails, an opening assembly on one side of the upper end of the bracket for machining a bevel on the welding surface of the explosive composite plate, a double-headed welding assembly on the side of the bracket away from the opening assembly for welding the bevel of the explosive composite plate, the opening assembly including a support frame connected to the bracket, a rotating cavity inside the support frame, and a cutting table inside the rotating cavity.

[0008] As a preferred embodiment of the manufacturing apparatus for wear-resistant composite pipes described in this invention, the clamping table includes a sliding plate slidably connected to the mounting frame, a sliding rail on the portion of the sliding plate facing the inner side of the mounting frame, roller frames on both sides of the sliding rail, a drive roller rotatably mounted on the inner side of the roller frames, and a drive screw disposed inside the sliding rail. The drive screw is a bidirectional screw, and screw sliders are driven and fitted on both sides of its outer periphery. The screw sliders are fixedly connected to the roller frames, and a servo motor is disposed on one side of the drive screw for controlling the rotation of the drive screw.

[0009] As a preferred embodiment of the manufacturing apparatus for wear-resistant composite pipes described in this invention, the clamping platform further includes an electric push rod fixedly disposed on the side wall of the mounting frame, the outer shell end of the electric push rod being fixedly connected to the mounting frame, and the output end of the electric push rod being fixedly connected to the sliding plate.

[0010] As a preferred embodiment of the manufacturing apparatus for wear-resistant composite pipes described in this invention, the guide rail includes a support fixedly connected to a crossbeam. A sliding surface is provided at the top of the support, and a supporting slider is provided at the top of the sliding surface. Pulleys are provided at both ends of the support, and a transmission belt is provided between the two pulleys. The transmission belt is fixedly connected to one side of the support. A transmission motor is provided at one end of the support, and the motor shaft of the transmission motor is connected to one of the pulleys by a key.

[0011] As a preferred embodiment of the manufacturing apparatus for wear-resistant composite pipes described in this invention, the top side of the support is provided with a guide plate and a fixed plate, which are respectively used to install the double-head welding assembly and the opening assembly. The support frame is fixedly connected to the fixed plate, and there are two support frames, with a cutting gap between the two support frames.

[0012] As a preferred embodiment of the manufacturing apparatus for wear-resistant composite pipes described in this invention, wherein: the cutting table has a guide shaft rotatably arranged inside the rotating cavity, the bottom end of the guide shaft is provided with a connecting plate, the connecting plate has a plurality of evenly distributed arc-shaped grooves inside, the cutting table has a sliding groove inside, a tool holder is slidably arranged inside the sliding groove, a connecting shaft is fixedly arranged at the top end of the tool holder, and the top end of the connecting shaft is inserted into the arc-shaped groove.

[0013] As a preferred embodiment of the manufacturing apparatus for wear-resistant composite pipes described in this invention, the double-head welding assembly includes a sliding plate slidably connected to the guide plate. Two sliding plates are provided and are located at both ends of the guide plate. The positions of the two sliding plates correspond to the positions of the two support frames. A welding head is provided at the end of the sliding plate away from the support frame, and an adjustment assembly is provided on one side of the guide plate for adjusting the position of the two welding heads.

[0014] As a preferred embodiment of the manufacturing apparatus for wear-resistant composite pipes described in this invention, the adjusting component includes a gear, which is rotatably connected to one side of the guide plate. A mounting groove is provided on the side of the slide plate facing the gear, and an adjusting toothed plate is provided inside the mounting groove. The adjusting toothed plate meshes with the gear.

[0015] As a preferred embodiment of the manufacturing apparatus for wear-resistant composite pipes described in this invention, one end of the tool holder is provided with an inner groove for clamping the cutting tool.

[0016] As a preferred embodiment of the manufacturing apparatus for wear-resistant composite pipes described in this invention, the double-head welding assembly further includes a wire feeding shaft fixedly mounted on the slide plate, a welding wire spool rotatably mounted on the wire feeding shaft, welding wire wound on the welding wire spool, and the wire outlet end of the welding wire spool extending to the welding gun nozzle of the welding head.

[0017] The beneficial effects of this invention are: 1. By integrating the opening assembly and the double-head welding assembly onto the same bracket, and with the bracket feeding linearly along the guide rail, continuous operation of beveling before welding is achieved, which greatly reduces the secondary clamping time of the composite plate and improves production efficiency; at the same time, it ensures the coaxiality of the bevel and the weld bead, avoiding positioning errors caused by separate processing.

[0018] 2. The cutting table adopts a linkage structure of the arc groove of the connecting plate and the tool holder connecting shaft. The rotation of the guide shaft drives multiple tool holders to move radially synchronously, realizing stepless adjustment of the cutting radius of the turning tool. It can adapt to the processing requirements of different composite plate widths and bevel depths. The synchronous movement of multiple tool holders ensures the force balance when multiple tools are cutting at the same time, avoiding vibration and uneven tool wear caused by single-tool cutting.

[0019] 3. The double-head welding assembly uses gears and bidirectional adjusting gear plates to achieve opposite position adjustments of the two welding heads along the guide plate, ensuring that the distance between the two welding heads and the upper and lower surfaces of the composite plate changes synchronously. This allows the welding timing of different materials in the composite plate to be staggered, avoiding material fusion defects caused by simultaneous welding. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a scene diagram of a manufacturing device used in wear-resistant composite pipes.

[0022] Figure 2 This is a structural diagram of a manufacturing apparatus used in wear-resistant composite pipes.

[0023] Figure 3 This is a structural diagram of the clamping platform used in the manufacturing apparatus for wear-resistant composite pipes.

[0024] Figure 4 This is a structural diagram of the open assembly and double-ended welding assembly used in the manufacturing equipment for wear-resistant composite pipes.

[0025] Figure 5 This is a diagram of the internal structure of the cutting table used in the manufacturing of wear-resistant composite pipes.

[0026] Figure 6 This is a structural diagram of the guide rail used in the manufacturing equipment for wear-resistant composite pipes.

[0027] Figure 7 This is a plan view of the equipment used in the manufacturing of wear-resistant composite pipes.

[0028] In the diagram: 1. Top beam; 2. Mounting frame; 3. Clamping platform; 31. Sliding plate; 32. Sliding rail; 33. Roller frame; 34. Drive roller; 35. Drive screw; 36. Screw slider; 37. Electric push rod; 4. Crossbeam; 5. Guide rail; 51. Support; 52. Sliding surface; 53. Support slider; 54. Pulley; 55. Transmission belt; 6. Bracket; 61. Guide plate; 62. Fixed plate; 7. 71. Opening assembly; 72. Support frame; 73. Cutting table; 74. Guide shaft; 75. Connecting disc; 76. Arc groove; 77. Sliding groove; 78. Tool holder; 79. Connecting shaft; 70. Inner groove; 80. Double-headed welding assembly; 81. Slide plate; 82. Welding head; 83. Adjustment assembly; 84. Gear; 85. Mounting groove; 86. Adjusting toothed plate; 87. Wire feeding shaft; 88. Welding wire spool. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1, referring to Figures 1 to 7 This is the first embodiment of the present invention, which provides a manufacturing apparatus for wear-resistant composite pipes. The apparatus includes a top beam 1, an outer mounting frame 2, a clamping table 3, a crossbeam 4, a guide rail 5, a support 6, an opening assembly 7, and a double-headed welding assembly 8. The clamping table 3 uses a bidirectional screw-driven roller 34 to achieve symmetrical clamping of the exploded composite plate. The opening assembly 7 uses a linkage mechanism between the arc groove 723 inside the cutting table 72 and the tool holder 725 to achieve synchronous radial adjustment of multiple tools, completing beveling. The double-headed welding assembly 8 uses a gear 831 toothed plate adjustment mechanism to achieve staggered adjustment of the positions of the two welding heads 82, completing time-sharing welding of different material layers of the composite plate. This realizes continuous operation of beveling and welding of the exploded composite plate, improving production efficiency and welding quality.

[0033] Specifically, the top beam 1 has several evenly distributed mounting frames 2 at its bottom end, and several clamping platforms 3 are set inside the mounting frames 2. The mounting frames 2 and clamping platforms 3 are used to fix the exploded composite plate that has been rolled into a cylindrical shape.

[0034] The top beam 1 serves as the upper load-bearing frame of the entire device. Its bottom end is fixedly connected to the outer frame 2 by high-strength bolts. The number of outer frames 2 is set to three according to the length of the composite plate. Each outer frame 2 is a polygonal frame structure with guide grooves processed on its inner sidewall.

[0035] The clamping table 3 is slidably assembled inside the mounting frame 2. The clamping table 3 applies an adjustable clamping force to the edge of the exploded composite plate, ensuring that the composite plate maintains flatness and positional accuracy during subsequent cutting and welding processes. It can eliminate warping deformation caused by residual stress in the composite plate after rolling and provide a stable reference surface for subsequent beveling, thereby improving the consistency of beveling angle and welding quality.

[0036] Specifically, both ends of the top beam 1 are provided with crossbeams 4, and the bottom end of the crossbeams 4 is provided with guide rails 5. The guide rails 5 are arranged parallel to the straight direction of the top beam 1. The crossbeams 4 are fixedly connected to the top beam 1 by welding, and the top end of the crossbeams 4 serves as the mounting base of the guide rails 5.

[0037] The guide rail 5 is fastened to the upper end of the crossbeam 4 by countersunk screws, and the length direction of the guide rail 5 is parallel to the length direction of the top beam 1. This ensures that when the subsequent support 6 slides along the guide rail 5, the opening assembly 7 and the double-headed welding assembly 8 can make precise linear movements relative to the length direction of the composite plate, avoiding uneven bevel depth or weld offset caused by the skew of the guide rail 5.

[0038] Specifically, a bracket 6 is slidably mounted on the top of the guide rail 5. An opening assembly 7 is provided on one side of the upper end of the bracket 6 for machining a bevel on the welding surface of the exploded composite plate. A double-headed welding assembly 8 is provided on the side of the bracket 6 away from the opening assembly 7 for welding the bevel of the exploded composite plate. The bracket 6 has a vertical structure, and its bottom slider forms a sliding engagement with the guide rail 5 surface, allowing the bracket 6 to reciprocate linearly along the guide rail 5.

[0039] The opening assembly 7 is fixed at the front end of the bracket 6, and the center line of its cutting tool corresponds to the weld seam of the cylindrical exploded composite plate to be welded. Through the feed movement of the bracket 6, the opening assembly 7 is segmented and removed at the edge of the composite plate, so that the two materials of the exploded composite plate have different widths and angles. The double-headed welding assembly 8 is fixed at the rear end of the bracket 6, and its two welding heads 82 correspond to the bevels on the upper and lower sides of the composite plate respectively. The double-sided welding is completed synchronously during the return movement of the bracket 6.

[0040] This front-to-back arrangement enables continuous operation of beveling before welding, reducing the time required for secondary clamping of composite plates, improving production efficiency, and ensuring the coaxiality of the bevel and weld bead positions to avoid plate deformation caused by uneven welding heat input.

[0041] Specifically, the opening assembly 7 includes a support frame 71 connected to the bracket 6. The support frame 71 has a rotating cavity inside, and a cutting table 72 is provided inside the rotating cavity. The support frame 71 is fixed to the fixed plate 62 of the bracket 6 by bolts. Its internal rotating cavity is a cylindrical cavity, and the cutting table 72 is coaxially installed in the rotating cavity and can rotate around its own axis.

[0042] The rotation of the cutting table 72 is driven by an independent servo motor. By adjusting the extension length of the tool post 725 inside the cutting table 72, the cutting width of the cutting tool can be changed to adapt to the machining requirements of different bevels. An angular contact ball bearing is embedded in the rotating cavity wall of the support frame 71 to bear the radial load and axial thrust of the cutting table 72, ensuring a smooth and vibration-free cutting process.

[0043] Example 2, refer to Figures 2-7 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0044] Specifically, the clamping platform 3 includes a sliding plate 31 that is slidably connected to the mounting frame 2. The portion of the sliding plate 31 facing the inner side of the mounting frame 2 is provided with a sliding rail 32. Roller frames 33 are provided on both sides of the sliding rail 32. Drive rollers 34 are rotatably provided on the inner side of the roller frames 33.

[0045] The sliding plate 31 is a rectangular steel plate with its two sides inserted into the guide groove of the mounting frame 2, and can slide along the depth direction of the mounting frame 2. The sliding rail 32 is welded to the inner side of the sliding plate 31 and consists of two parallel raised rails. The roller frame 33 is a U-shaped frame with a groove at the bottom that mates with the sliding rail 32. The roller frame 33 can move laterally along the sliding rail 32.

[0046] Two drive rollers 34 are mounted on each roller frame 33 via bearings. The outer circumferential surface of the drive rollers 34 is knurled to increase the friction with the edge of the composite board. During clamping, the edge of the composite board is clamped between the drive rollers 34 of the two roller frames 33. Multi-point contact clamping is achieved through the clamping force of the rollers, which can prevent the composite board from moving during processing and allow the composite board to be finely adjusted along its length under the drive of the rollers to adapt to the positioning of different specifications of boards.

[0047] Additionally, a drive screw 35 is installed inside the sliding rail 32. The drive screw 35 is a bidirectional screw, and both sides of its outer periphery are equipped with screw sliders 36 for transmission. The screw sliders 36 are fixedly connected to the roller frame 33. A servo motor is installed on one side of the drive screw 35 to control the rotation of the drive screw 35.

[0048] The two ends of the drive screw 35 are supported in the bearing seats at both ends of the slide rail 32 by rolling bearings. The thread of the drive screw 35 is divided into a left-hand section and a right-hand section. The two screw sliders 36 are respectively engaged with the left-hand section and the right-hand section thread.

[0049] The output shaft of the servo motor is directly connected to the input end of the drive screw 35 via a coupling. When the servo motor receives a control signal and rotates in the forward direction, the two screw sliders 36 move towards each other, causing the roller frame 33 and its drive rollers 34 to move closer together, thereby clamping the composite plate. When rotating in the reverse direction, the two screw sliders 36 move away from each other, releasing the composite plate.

[0050] The bidirectional lead screw structure ensures that the clamping forces on both sides are symmetrical and synchronous, preventing the composite board from shifting due to clamping on one side. At the same time, the servo motor can precisely control the clamping force and achieve constant force clamping through current feedback, preventing excessive clamping from damaging the wear-resistant layer on the surface of the composite board.

[0051] Specifically, the clamping platform 3 also includes an electric push rod 37 fixedly installed on the side wall of the mounting frame 2. The outer shell end of the electric push rod 37 is fixedly connected to the mounting frame 2, and the output end of the electric push rod 37 is fixedly connected to the sliding plate 31.

[0052] The housing of the electric push rod 37 is fixed to the outer wall of the mounting frame 2 by a flange and bolts, and the end of the telescopic rod of the electric push rod 37 is fixedly connected to the back of the sliding plate 31 by a hinge seat.

[0053] The electric push rod 37 has a built-in stroke sensor. When the electric push rod 37 extends or retracts, it pushes the sliding plate 31 to move linearly along the guide groove of the mounting frame 2, thereby changing the extension length of the clamping table 3 relative to the mounting frame 2. This allows the clamping table 3 to adapt to exploded composite plates with different cylinder diameters. By adjusting the position of the sliding plate 31, the drive roller 34 is always pressed against the center area of ​​the composite plate's thickness, ensuring stable clamping, maintaining a constant clamping force, and preventing the composite plate from loosening due to processing vibration.

[0054] Specifically, the guide rail 5 includes a support 51 fixedly connected to the crossbeam 4. The top of the support 51 is provided with a sliding surface 52, and the top of the sliding surface 52 is provided with a supporting slider 53. Both ends of the support 51 are provided with pulleys 54, and a transmission belt 55 is provided between the two pulleys 54. The transmission belt 55 is fixedly connected to one side of the support 51. One end of the support 51 is provided with a transmission motor, and the motor shaft of the transmission motor is connected to one of the pulleys 54 by a key.

[0055] The support 51 is made of aluminum alloy profile, and its bottom surface is fixed to the upper end of the crossbeam 4 by bolts. A sliding surface 52 is fixedly provided on the upper surface of the support 51. The support slider 53 is made of hardened steel, and its bottom and the sliding surface 52 form a sliding friction pair. The top of the support slider 53 is fixedly connected to the bottom of the bracket 6.

[0056] The pulleys 54 are respectively installed at both ends of the support 51 along the length direction through bearing seats. The transmission belt 55 is a synchronous toothed belt, which forms a closed loop after passing over the two pulleys 54. One side of the transmission belt 55 is fixedly connected to the bottom of the bracket 6, and the other side of the belt body is a free section.

[0057] The drive motor is a servo motor, and its output shaft is connected to the shaft hole of the drive pulley 54 through a flat key. When the drive motor rotates, the drive pulley 54 drives the drive belt 55 to rotate. Since one side of the drive belt 55 is fixed to the bracket 6, the bracket 6 will move linearly along the sliding surface 52 with the movement of the drive belt 55.

[0058] Specifically, the top side of the bracket 6 is provided with a guide plate 61 and a fixed plate 62, which are used to install the double-head welding assembly 8 and the opening assembly 7, respectively. The support frame 71 is fixedly connected to the fixed plate 62, and there are two support frames 71, with a cutting gap between the two support frames 71.

[0059] Both the guide plate 61 and the fixed plate 62 are vertically welded to the top platform of the bracket 6. They are parallel to each other and spaced a certain distance apart. The fixed plate 62 is close to the front end of the bracket 6, and two support frames 71 are fixed on it. The two support frames 71 are arranged horizontally in a direction perpendicular to the guide rail 5. The guide plate 61 is close to the rear end of the bracket 6, and a double-headed welding assembly 8 is installed on it. The double arrangement structure of the support frame 71 allows the inner and outer sides of the weld joint of the composite plate to be beveled simultaneously in the same stroke, improving work efficiency. The cutting gap provides space for the tool to cut in and for the chips to scatter, avoiding chip accumulation that affects the cutting quality.

[0060] Specifically, the cutting table 72 has a guide shaft 721 rotatably mounted inside the rotating cavity. A connecting plate 722 is located at the bottom of the guide shaft 721. The connecting plate 722 has several evenly distributed arc-shaped grooves 723 inside. The cutting table 72 has a sliding groove 724 inside, and a tool holder 725 is slidably mounted inside the sliding groove 724. A connecting shaft 726 is fixedly mounted at the top of the tool holder 725, and the top of the connecting shaft 726 is inserted into the arc-shaped groove 723. The upper end of the guide shaft 721 is connected to the inner top wall of the rotating cavity of the support frame 71 via a deep groove ball bearing, and the lower end of the guide shaft 721 is coaxially fixed to the connecting plate 722 with screws.

[0061] The connecting disc 722 is disc-shaped, with four arc-shaped grooves 723 evenly spaced along its circumference on its surface. The bottom of the cutting table 72's housing has four radial sliding grooves 724, each containing a tool holder 725 that can slide radially along the groove. A connecting shaft 726 is vertically fixed to the top of each tool holder 725, passing through an elongated hole at the top of the cutting table 72 and inserting into the corresponding arc-shaped groove 723. When the guide shaft 721 rotates the connecting disc 722, the contour of the arc-shaped groove 723 pushes the connecting shaft 726 radially along the sliding groove 724, thus synchronously adjusting the radial position of the four tool holders 725. This linkage mechanism enables stepless adjustment of the cutting radius of the lathe tool, adapting to the processing requirements of different composite plate widths and bevel depths. Furthermore, the synchronous movement of the four tool holders 725 ensures balanced force during simultaneous multi-tool cutting, avoiding vibration and uneven tool wear caused by single-tool cutting.

[0062] Specifically, the double-headed welding assembly 8 includes two sliding plates 81 slidably connected to the guide plate 61. These two sliding plates 81 are located at opposite ends of the guide plate 61, with their positions corresponding to the positions of the two support frames 71. A welding head 82 is located at the end of each sliding plate 81 furthest from the support frame 71, along with an adjustment assembly 83 located on one side of the guide plate 61 for adjusting the positions of the two welding heads 82. Vertical T-shaped grooves are machined on both the front and back of the guide plate 61. Each sliding plate 81 is embedded in its corresponding groove via a T-shaped slider on its back, allowing it to slide vertically.

[0063] Two slide plates 81 are located at the upper and lower ends of the guide plate 61, respectively, and their horizontal positions are aligned with the two support frames 71, so that the welding head 82 can be aligned with the bevel processed by the corresponding support frame 71. The welding head 82 is a gas shielded welding torch, which is fixed to the end of the extended arm of the slide plate 81 by a clamp, and the center line of the nozzle of the welding head 82 coincides with the center line of the bevel.

[0064] The adjustment component 83 is installed on the side of the guide plate 61. The vertical position of the two slide plates 81 can be changed simultaneously or separately by adjusting the component 83, thereby adjusting the height and angle of the welding head 82 relative to the surface of the composite plate to adapt to different bevel depths and welding process parameters, so that the welding timing of the two different materials is staggered, avoiding the problem of material fusion caused by simultaneous welding.

[0065] Specifically, the adjustment component 83 includes a gear 831, which is rotatably connected to one side of the guide plate 61. The slide plate 81 has an installation groove 832 on the side facing the gear 831. An adjustment toothed plate 833 is provided inside the installation groove 832, and the adjustment toothed plate 833 meshes with the gear 831.

[0066] Gear 831 is mounted on bracket 6 on the side of guide plate 61 via a central shaft and bearing. The axis of gear 831 is horizontal and perpendicular to the sliding direction of slide plate 81. A rectangular mounting groove 832 is opened on the side of each slide plate 81 facing gear 831. A vertical adjusting tooth plate 833 is fixed in the mounting groove 832 by screws. The tooth surface of adjusting tooth plate 833 faces gear 831.

[0067] The adjusting gear plates 833 on the two sliding plates 81 are located on both sides of the gear 831 and are engaged with the gear 831. When the gear 831 is rotated by a manual knob or a micro motor, the two sliding plates 81 move back and forth in opposite directions along the guide plate 61 because the gear 831 is engaged with the gear plates on both sides at the same time. The opposing adjustment method ensures that the distance between the two welding heads 82 and the upper and lower surfaces of the composite plate changes synchronously, so that the welding timing of the various materials of the composite plate is staggered during welding.

[0068] Specifically, one end of the tool holder 725 is provided with an inner groove 727 for clamping the lathe tool.

[0069] Specifically, the dual-head welding assembly 8 further includes a wire feeding shaft 84 fixedly mounted on the slide plate 81. A wire feeding spool 85 is rotatably mounted on the wire feeding shaft 84, on which welding wire is wound. The wire exit end of the wire feeding spool 85 extends to the welding torch nozzle of the welding head 82. The wire feeding shaft 84 is a stepped shaft, its root fixed to the side wall of the slide plate 81 via a flange. The axis of the wire feeding shaft 84 is perpendicular to the wire feeding direction of the welding head 82. A rolling bearing is installed in the central hole of the wire feeding spool 85, which is fitted onto the wire feeding shaft 84 and can rotate freely. The welding wire on the wire feeding spool 85 enters the wire feeding hose after passing through a straightener. The end of the hose is connected to the contact nozzle of the welding head 82. A damping friction plate is also provided on the wire feeding shaft 84 to adjust the rotational resistance of the wire feeding spool 85 and prevent the welding wire from loosening or tangling due to inertia.

[0070] In use, the exploded composite plate, which has been rolled into a cylindrical shape, is first placed on the clamping table 3 inside the mounting frame 2. The servo motor is started, driving the lead screw 35 to rotate forward. The two lead screw sliders 36 move towards each other, causing the roller frame 33 and its drive rollers 34 to move closer together, clamping the edge of the composite plate between the two drive rollers 34. At the same time, the electric push rod 37 adjusts its extension length according to the diameter of the composite plate, pushing the sliding plate 31 to slide along the guide groove of the mounting frame 2, so that the drive rollers 34 always press against the outer surface of the composite plate, ensuring stable clamping.

[0071] Subsequently, based on the required bevel width and depth, the guide shaft 721 is rotated, which drives the connecting plate 722 to rotate. The arc groove 723 on the connecting plate 722 pushes the connecting shaft 726 to move radially along the sliding groove 724, thereby synchronously adjusting the radial position of the four tool holders 725 so that the cutting tool installed in the inner groove 727 reaches the predetermined cutting radius.

[0072] The drive motor is started, and the drive pulley 54 drives the drive belt 55 to rotate. Since one side of the drive belt 55 is fixed to the bracket 6, the bracket 6 makes a linear feed motion along the sliding surface 52 of the guide rail 5. The opening assembly 7 fixed to the front end of the bracket 6 moves forward accordingly, and the cutting tool cuts a bevel on the welding surface of the composite plate. After the bracket 6 has been fed to the set stroke, the drive motor reverses, and the bracket 6 begins its return motion.

[0073] At this time, based on the material characteristics of the composite board base layer and the cladding, the rotating gear 831 drives the adjusting gear plates 833 on both sides to move back and forth in opposite directions, so that the two sliding plates 81 slide along the guide plate 61 to their respective required welding positions, thereby adjusting the height of the two welding heads 82 relative to the upper and lower surfaces of the composite board, so that the welding timing of the two different materials is staggered.

[0074] The welding wire on the welding wire spool 85 is fed to the welding gun nozzle of the welding head 82 through the wire feeding hose. The two welding heads 82 weld the bevels on the inner and outer sides of the composite plate in turn. After welding is completed, the servo motor rotates in the opposite direction, driving the lead screw 35 to move the two lead screw sliders 36 in opposite directions. The roller frame 33 releases the bracket 51 and removes the welded composite pipe.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A manufacturing apparatus for wear-resistant and corrosion-resistant composite pipes, characterized in that: include, The top beam (1) has several evenly distributed mounting frames (2) at its bottom end. Several clamping tables (3) are provided inside the mounting frames (2). The mounting frames (2) and clamping tables (3) are used to fix the exploded composite plate after roll pressing. Both ends of the top beam (1) are provided with crossbeams (4). The bottom end of the crossbeams (4) is provided with guide rails (5). The guide rails (5) are parallel to the straight direction of the top beam (1). The top end of the guide rails (5) is slidably provided with a bracket (6). An opening assembly (7) is provided on one side of the upper end of the bracket (6) for machining the bevel on the welding surface of the exploded composite plate. A double-headed welding assembly (8) is provided on the side of the bracket (6) away from the opening assembly (7) for welding the bevel of the exploded composite plate. The opening assembly (7) includes a support frame (71) connected to the bracket (6). The support frame (71) is provided with a rotating cavity. A cutting table (72) is provided on the inner side of the rotating cavity.

2. The manufacturing apparatus for wear-resistant composite pipes as described in claim 1, characterized in that: The clamping platform (3) includes a sliding plate (31) slidably connected to the mounting frame (2). A sliding rail (32) is provided on the part of the sliding plate (31) facing the inner side of the mounting frame (2). Roller frames (33) are provided on both sides of the sliding rail (32). A drive roller (34) is rotatably provided on the inner side of the roller frame (33). A drive screw (35) is provided inside the sliding rail (32). The drive screw (35) is a bidirectional screw, and a screw slider (36) is driven and engaged on both sides of its outer periphery. The screw slider (36) is fixedly connected to the roller frame (33). A servo motor is provided on one side of the drive screw (35) to control the rotation of the drive screw (35).

3. The manufacturing apparatus for wear-resistant composite pipes as described in claim 2, characterized in that: The clamping platform (3) also includes an electric push rod (37) fixedly installed on the side wall of the mounting frame (2). The outer shell end of the electric push rod (37) is fixedly connected to the mounting frame (2), and the output end of the electric push rod (37) is fixedly connected to the sliding plate (31).

4. The apparatus for manufacturing wear-resistant composite pipes as described in any one of claims 1, 2, or 3, characterized in that: The guide rail (5) includes a support (51) fixedly connected to the crossbeam (4). The top of the support (51) is provided with a sliding surface (52), and the top of the sliding surface (52) is provided with a supporting slider (53). Both ends of the support (51) are provided with pulleys (54). A transmission belt (55) is provided between the two pulleys (54). The transmission belt (55) is fixedly connected to one side of the support (51). One end of the support (51) is provided with a transmission motor. The motor shaft of the transmission motor is connected to one of the pulleys (54) by a key.

5. The apparatus for manufacturing wear-resistant composite pipes as described in any one of claims 1, 2, or 3, characterized in that: The top side of the bracket (6) is provided with a guide plate (61) and a fixed plate (62), which are used to install the double-head welding assembly (8) and the opening assembly (7), respectively. The support frame (71) is fixedly connected to the fixed plate (62), and there are two support frames (71), with a cutting gap between the two support frames (71).

6. The manufacturing apparatus for wear-resistant composite pipes as described in claim 5, characterized in that: The cutting table (72) has a guide shaft (721) rotatably mounted inside the rotating cavity. A connecting plate (722) is provided at the bottom end of the guide shaft (721). The connecting plate (722) has several evenly distributed arc-shaped grooves (723) inside. The cutting table (72) has a sliding groove (724) inside. A tool holder (725) is slidably mounted inside the sliding groove (724). A connecting shaft (726) is fixedly mounted at the top end of the tool holder (725). The top end of the connecting shaft (726) is inserted into the arc-shaped groove (723).

7. The apparatus for manufacturing wear-resistant composite pipes as described in any one of claims 1, 2, 3 or 6, characterized in that: The double-head welding assembly (8) includes a sliding plate (81) slidably connected to the guide plate (61). There are two sliding plates (81) located at both ends of the guide plate (61). The positions of the two sliding plates (81) correspond to the positions of the two support frames (71). A welding head (82) is provided at the end of the sliding plate (81) away from the support frame (71). An adjustment assembly (83) is provided on one side of the guide plate (61) for adjusting the position of the two welding heads (82).

8. The manufacturing apparatus for wear-resistant composite pipes as described in claim 7, characterized in that: The adjustment component (83) includes a gear (831), which is rotatably connected to one side of the guide plate (61). The slide plate (81) has an installation groove (832) on the side facing the gear (831). An adjustment toothed plate (833) is provided inside the installation groove (832), and the adjustment toothed plate (833) meshes with the gear (831).

9. The manufacturing apparatus for wear-resistant composite pipes as described in claim 6, characterized in that: One end of the tool holder (725) is provided with an inner groove (727) for holding the lathe tool.

10. The manufacturing apparatus for wear-resistant composite pipes as described in claim 8, characterized in that: The dual-head welding assembly (8) also includes a wire feeding shaft (84) fixedly mounted on the slide plate (81). A wire feeding spool (85) is rotatably mounted on the wire feeding shaft (84). Welding wire is wound on the wire feeding spool (85), and the wire outlet end of the wire feeding spool (85) extends to the welding gun nozzle of the welding head (82).

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