A marine floating photovoltaic engineering plate welding machine

Abstract

The present application relates to plate processing equipment technical field, specifically to a kind of offshore floating photovoltaic engineering plate welding machine, including rack, the top of rack is provided with welding assembly, the bottom of rack is provided with adjusting mechanism, welding assembly includes pedestal and the drilling assembly, support assembly, heating assembly, clamping assembly and front push plate integrated on pedestal, drilling assembly is configured to perform drilling when front push plate welding pressure maintaining state, clamping assembly and front push plate form welding area, heating assembly is movably installed on rack, to realize selectively entering or exiting welding area. By integrating drilling assembly on welding assembly, and being configured to perform drilling operation under the condition that clamping assembly maintains preset top pressure, so that the welding of plastic plate and plastic flange and subsequent drilling can be completed in the same station, the same clamping cycle, improve the relative position accuracy of mounting hole and welding point, improve the efficiency of mass production.

Description

Technical Field

[0001] This invention relates to the field of sheet metal processing equipment technology, specifically to a sheet metal welding machine for offshore floating photovoltaic projects. Background Technology

[0002] In offshore floating photovoltaic projects, plastic sheets are widely used to manufacture the floating structure of floating photovoltaic platforms. Plastic flanges, as connecting components, need to be firmly welded to the plastic sheets to achieve reliable connections between floats and between floats and photovoltaic module supports, thus ensuring the structural stability and service life of the entire floating photovoltaic system.

[0003] Traditional plate welding processing methods are usually divided into independent steps: first, the plate and flange are positioned, clamped, and hot-melt welded; after the welded part has completely cooled and solidified, the workpiece is disassembled and transferred to the drilling station for secondary clamping and processing.

[0004] When using the above-mentioned step-by-step operation method, the drilling operation requires re-clamping the workpiece after welding. Since the secondary clamping reference is inconsistent with the welding reference, positioning deviation is easy to occur, causing the installation hole position to deviate from the design position, which affects the installation accuracy of the subsequent photovoltaic module. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention proposes a welding machine for sheet metal used in offshore floating photovoltaic projects. The aim is to complete drilling and welding in the same workstation and within the same clamping cycle, eliminating auxiliary time such as workpiece transfer, secondary clamping, and tool re-setting, thereby improving production efficiency.

[0006] To solve the above-mentioned technical problems, the present invention includes a frame, characterized in that: the left and right ends of the frame are respectively provided with placement spaces for accommodating plates; at least one welding assembly is provided on the table of the frame; the welding assembly includes a drilling assembly, a support assembly, a heating assembly, a clamping assembly, a front push plate, and a base; the base is mounted on the table of the frame; the front push plate slides back and forth relative to the base to clamp and release the plates; the drilling assembly is located at the rear end of the base and reciprocates along the front-back direction of the base; the support assembly is located at the front end of the base and reciprocates along the front-back direction of the base; the clamping assembly is mounted on the side of the support assembly facing the front push plate; a welding area is formed between the clamping assembly and the front push plate; the heating assembly is movably mounted on the support assembly to enter or exit the welding area; and the drilling assembly is configured to perform drilling operations while the clamping assembly maintains a preset clamping pressure.

[0007] Preferably, the support assembly includes a first support plate and a second support plate in sequence from front to back, and a second tie rod type double-outlet cylinder is provided between the second support plate and the first support plate. The second piston rod of the second tie rod type double-outlet cylinder is fixedly connected to the front push plate.

[0008] Preferably, the heating assembly includes a tilting frame with a heating plate on it, and a side plate that slides along the front-rear direction of the base is mounted on the support assembly. The tilting frame is hinged to the side plate, and a first cylinder is hinged between the side plate and the tilting frame.

[0009] Preferably, the drilling assembly includes a fourth support plate and a transmission rod. The axis of the transmission rod extends along the front-rear direction of the base. A drill bit is provided at one end of the transmission rod facing the front push plate. The fourth support plate slides back and forth relative to the base. A reducer is provided on the fourth support plate. A drive motor is provided at the input end of the reducer. The output end of the reducer is connected to the transmission rod.

[0010] Preferably, the drilling assembly further includes a third support plate parallel to the fourth support plate. The third support plate is fixedly connected to the support assembly via a second strut, which passes through the fourth support plate to form a sliding fit. An electric cylinder is provided on the third support plate, and the output end of the electric cylinder is fixedly connected to the fourth support plate.

[0011] Preferably, an adjustment mechanism is provided within the placement space. The adjustment mechanism includes a mounting base and a third cylinder. The mounting base is installed inside the placement space. The left end of the mounting base is connected to a rotating shaft that can slide left and right. The right end of the mounting base is hinged to a second connecting plate. A first connecting plate is hinged to the second connecting plate. The first connecting plate is rotatably connected to the rotating shaft. A shaft for supporting the plate is provided at the hinge point between the first connecting plate and the second connecting plate. The cylinder body of the third cylinder is hinged to the mounting base. The piston rod of the third cylinder is rotatably connected to the rotating shaft.

[0012] Preferably, the clamping assembly includes a second cylinder and two sets of clamping plates arranged opposite each other. The clamping plates are installed on the front end face of the support assembly. The second cylinder synchronously drives the two sets of clamping plates, and the two sets of clamping plates slide up and down relative to the support assembly to achieve separation and closure.

[0013] Preferably, the clamping plate has two sets of symmetrically distributed positioning posts on the side facing the front push plate.

[0014] Preferably, it also includes two sets of limiting plates, which are respectively arranged at the left and right ends of the frame. The limiting plates are arranged facing the placement space. Guide rods are respectively provided on the left and right side walls of the frame, and the guide rods pass through the corresponding limiting plates to form a sliding fit.

[0015] After adopting the above technical solution, the beneficial effects of the present invention are:

[0016] By integrating a drilling assembly into the welding assembly and configuring it to perform drilling operations while the clamping assembly maintains a preset clamping pressure, the welding of plastic sheets and plastic flanges, as well as subsequent drilling, can be completed in the same station and within the same clamping cycle. This eliminates the need for workpiece transfer and secondary clamping, avoiding hole position deviations caused by inconsistent reference points, improving the relative positional accuracy of the mounting holes and welding points, and increasing the efficiency of mass production. The drilling assembly performs drilling operations while the clamping assembly maintains a preset clamping pressure. The clamping assembly applies a constant pressure to the flange, forcing the incompletely solidified molten material in the weld center area into the gap between the drill bit and the hole wall. After cooling, this forms a continuous sealing layer, automatically sealing any defects in the hole wall. Attached Figure Description

[0017] To clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the welding assembly.

[0020] Figure 3 A schematic diagram of the supporting components;

[0021] Figure 4 This is a schematic diagram of the drilling assembly.

[0022] Figure 5 This is a schematic diagram of the clamping assembly.

[0023] Figure 6 This is a schematic diagram of the swing arm installation;

[0024] Figure 7 This is a schematic diagram of the heating assembly installation.

[0025] Figure 8 This is a schematic diagram of the frame structure;

[0026] Figure 9 This is a schematic diagram of the adjustment mechanism;

[0027] Figure 10 This is a schematic diagram of the internal structure of the adjustment mechanism;

[0028] Figure 11 This is a schematic diagram of a welding defect.

[0029] In the diagram: 1-Frame, 2-Welding assembly, 3-Drilling assembly, 4-Support assembly, 5-Heating assembly, 6-Adjusting mechanism, 7-Clamping assembly, 8-Front push plate, 9-Base, 10-First pull-rod type double-outlet cylinder, 11-Rear push plate, 12-Side plate, 13-Tilting frame, 14-Heating plate, 15-First cylinder, 16-Second pull-rod type double-outlet cylinder, 17-Second piston rod, 18-Second support plate, 19-First piston rod, 20-First support plate, 21-First strut, 22-Reducer, 23-Fourth support plate, 24-Third support 25-Electric cylinder, 26-Drive motor, 27-Second support rod, 28-Transmission rod, 29-Fifth support plate, 30-Drill bit, 31-Through hole, 32-Second cylinder, 33-Clamping plate, 34-Positioning column, 35-Swing arm, 36-Connecting block, 37-Linear guide rail, 38-Limiting part, 39-Limiting groove, 40-Support platform, 41-Side support plate, 42-Limiting plate, 43-Guide rod, 44-Mounting base, 45-First connecting plate, 46-Shaft, 47-Second connecting plate, 48-Third cylinder, 49-Slide groove, 50-Rotating shaft. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The drawings are simplified schematic diagrams, used only to illustrate the basic structure of the invention. For ease of description, this embodiment uses… Figure 1 The positive and negative directions of the X-axis define the left and right directions, and the positive and negative directions of the Y-axis define the front and back directions.

[0031] like Figure 1 As shown in the figure, a sheet metal welding machine for offshore floating photovoltaic projects is illustrated. It includes a frame 1 and multiple welding assemblies 2 arranged on the frame 1. Each welding assembly 2 integrates a drilling component 3 and a heating component 5. This sheet metal welding machine is used for welding plastic sheets to plastic flanges in offshore floating photovoltaic systems to achieve a reliable connection at the installation point.

[0032] like Figure 1 and Figure 8 As shown, the left and right ends of the frame 1 protrude upwards to form mounting positions, each mounting position consisting of two symmetrically arranged support platforms 40. The two support platforms 40 within the same mounting position are welded together by side support plates 41 arranged on the left and right sides. The upper surface of the side support plates 41 is recessed downwards to form a limiting groove 39, thus creating a placement space for accommodating the plastic sheet. An adjustment mechanism 6 is installed between the two support platforms 40 within the same mounting position to adjust the position of the plastic sheet within the placement space.

[0033] like Figure 8 , Figure 9 and Figure 10As shown, the adjustment mechanism 6 includes a limiting plate 42, a mounting base 44, and a third cylinder 48. The mounting base 44 has a U-shaped cross-section in the ZY plane and is arranged laterally between two support platforms 40 in the same mounting position. The left and right ends of the mounting base 44 are fixedly connected to the side support plates 41 on the adjacent sides by bolts.

[0034] There are two sets of limiting plates 42, respectively arranged at the left and right ends of the frame 1. Three guide rods 43, arranged in a two-up, one-down configuration, are fixed to the side support plates 41 at both ends of the frame 1. The axes of the guide rods 43 are arranged along the length of the frame 1, and the limiting plates 42 pass through the three guide rods 43, forming a sliding fit. The limiting plates 42 can slide back and forth along the guide rods 43. The two sets of limiting plates 42 abut against the plastic sheet from the left and right sides, thereby limiting the plastic sheet in the left and right directions. Each guide rod 43 has external threads machined on its outer wall, and each guide rod 43 is fitted with two sets of nuts. The two sets of nuts are located on the left and right sides of the limiting plate 42, respectively, to limit the movement of the limiting plate 42.

[0035] Second connecting plates 47 are hinged to the front and rear sides of the right end of the mounting base 44, and a shaft 46 is rotatably connected between the two second connecting plates 47. A first connecting plate 45 is rotatably connected to both ends of the shaft 46, and a rotating shaft 50 is rotatably connected between the two first connecting plates 45. Sliding grooves 49 are respectively provided on the front and rear sides of the left end of the mounting base 44. The two ends of the rotating shaft 50 are embedded in the corresponding sliding grooves 49 to form a sliding fit, limiting the sliding stroke of the rotating shaft 50. The cylinder body of the third cylinder 48 is hinged to the mounting base 44, and the end of the piston rod of the third cylinder 48 is sleeved on the outside of the rotating shaft 50 to form a rotational fit.

[0036] The plastic sheet is supported by shafts 46 at both ends of the frame 1. When the two third cylinders 48 simultaneously extend and retract, the piston rod drives the rotating shaft 50 to slide along the slide groove 49, which is transmitted through the first connecting plate 45 and the second connecting plate 47, thereby driving the shafts 46 to rise or fall, thus adjusting the vertical height of the plastic sheet. When the third cylinder 48 at the left or right end operates alone, it can adjust the height of the corresponding side shaft 46, while the other shaft 46 remains at a constant height, thereby adjusting the tilt angle of the plastic sheet.

[0037] Based on the specifications and dimensions of the plastic sheet and the welding points, the adjustment mechanism 6 can flexibly adjust its height and tilt angle within the placement space to adapt to diverse welding operation needs.

[0038] like Figure 1 and Figure 2 As shown, there are four welding assemblies 2, which are respectively arranged on the support platform 40 of the frame 1. Two welding assemblies 2 in the same mounting position are arranged opposite each other to achieve synchronous welding operations on the front and rear sides of the plastic sheet.

[0039] The welding assembly 2 includes a base 9 and a drilling assembly 3, a support assembly 4, a heating assembly 5, a clamping assembly 7, a front push plate 8, and a rear push plate 11, all integrated and mounted on the base 9. The base 9 adopts a U-shaped frame structure and is fixedly mounted on the platform of the support table 40 with bolts, providing stable and reliable support for the entire welding assembly 2.

[0040] like Figure 2 and Figure 3 As shown, the front push plate 8 and the rear push plate 11 are parallel to each other and are respectively arranged on the front and rear sides of the base 9. The front push plate 8 and the rear push plate 11 are synchronously linked through the first tie rod type double-outlet cylinder 10 symmetrically arranged on the left and right sides of the base 9.

[0041] The cylinder body of the first lever-type double-outlet cylinder 10 is fixedly mounted on the base 9 by bolts. Both ends of its first piston rod 19 extend outward from the cylinder body. The front end of the first piston rod 19 is fixedly connected to the front push plate 8, and the rear end of the first piston rod 19 is fixedly connected to the rear push plate 11. When the first lever-type double-outlet cylinder 10 is activated, the cylinder body remains fixed, causing the first piston rod 19 to reciprocate along the Y-axis, thereby driving the front push plate 8 and the rear push plate 11 to move synchronously.

[0042] like Figure 3 As shown, the support assembly 4 is arranged inside the area enclosed by the front push plate 8, the rear push plate 11, and two sets of first tie rod type double-outlet cylinders 10. The support assembly 4 includes, from front to back, a first support plate 20 and a second support plate 18 that are parallel to each other, wherein the second support plate 18 is parallel to the rear push plate 11.

[0043] The clamping assembly 7 is installed on the front end face of the first support plate 20. Two sets of second tie-rod type double-outlet cylinders 16 are symmetrically arranged between the first support plate 20 and the second support plate 18. The two ends of the cylinder body of the second tie-rod type double-outlet cylinder 16 are fastened to the first support plate 20 and the second support plate 18 respectively by bolts. The two ends of the second piston rod 17 of the second tie-rod type double-outlet cylinder 16 extend out of the outer side of the cylinder body. The front end of the second piston rod 17 is fixedly connected to the front push plate 8, and the rear end of the second piston rod 17 is fixedly connected to the rear push plate 11.

[0044] The first pull-rod type double-outlet cylinder 10 is responsible for adjusting the basic stroke. By moving the first piston rod 19 forward and backward, it drives the front push plate 8 to reciprocate along the Y-axis, thereby completing the clamping and releasing action of the plastic sheet. The second pull-rod type double-outlet cylinder 16 is responsible for adjusting the stroke of the clamping component 7 during welding. By moving the cylinder body relative to the second piston rod 17, it drives the first support plate 20 to reciprocate along the Y-axis, realizing the welding feed and reset retraction of the clamping component 7.

[0045] In traditional processes, drilling is typically performed after welding is completed and the workpiece is disassembled, requiring secondary clamping and positioning. This can easily lead to positioning errors, causing the hole position to deviate from the design position and affecting the subsequent installation quality. In this invention, the drilling assembly 3 is integrated and installed on the welding assembly 2, allowing drilling to be started at the same station and under the same clamping condition. Since the workpiece is always in a clamped state, there is no need for re-clamping, thus completely eliminating the positioning error caused by secondary clamping and ensuring the relative positional accuracy of the hole position and the welding point.

[0046] like Figure 4 As shown, the drilling assembly 3 includes a drill bit 30 and a mounting frame. The mounting frame includes, from back to front, a third support plate 24, a fourth support plate 23, and a fifth support plate 29 that are parallel to each other. The fifth support plate 29 is arranged between the first support plate 20 and the second support plate 18, and the third support plate 24 and the fourth support plate 23 are arranged between the second support plate 18 and the push plate 11.

[0047] The fifth support plate 29 is parallel to the first support plate 20. The fifth support plate 29 is fixedly connected to the fourth support plate 23 through four sets of evenly distributed first struts 21. The axis of the first struts 21 extends along the Y-axis direction, providing stable support for the installation of the drill bit 30 and its driving components.

[0048] The drill bit 30 is driven by a reducer 22, which is bolted to the front end of the fourth support plate 23. The input end of the reducer 22 is fixedly connected to the drive motor 26, and the output end of the reducer 22 is fixedly connected to the transmission rod 28 via a coupling. The transmission rod 28 passes through the second support plate 18 and the fifth support plate 29 in sequence. The drill bit 30 is fixedly installed at the end of the transmission rod 28. A through hole 31 for the drill bit 30 to pass through is correspondingly provided on the first support plate 20.

[0049] The first support plate 20 is fixedly connected to the third support plate 24 via four evenly distributed sets of second support rods 27, with the axis of the first support rod 21 extending along the Y-axis. These second support rods 27 are movably inserted through the fifth support plate 29 and the fourth support plate 23 to form a sliding fit, ensuring that the components do not shake during drilling and guaranteeing operational stability. The cylinder body of the electric cylinder 25 is fixedly mounted on the rear end face of the third support plate 24 by bolts, and the end of the push rod of the electric cylinder 25 is fastened to the fourth support plate 23 by bolts.

[0050] like Figure 5 and Figure 6 As shown, the clamping assembly 7 includes two sets of clamping plates 33 arranged vertically opposite each other. The two sets of clamping plates 33 are respectively mounted on the front end face of the first support plate 20 via linear guide rails 37 arranged along the Z-axis.

[0051] The left and right sides of the front end face of the first support plate 20 are symmetrically hinged with swing arms 35. The cylinder body of the second cylinder 32 is hinged to the top of one set of swing arms 35, and the top of the other set of swing arms 35 is hinged to the piston rod of the second cylinder 32, which is used to drive the two sets of swing arms 35 to swing synchronously.

[0052] At the hinge point between the swing arm 35 and the first support plate 20, each swing arm 35 has a connecting block 36 hinged to both its left and right sides. The two connecting blocks 36 are respectively hinged to the two sets of clamping plates 33, thus forming a linkage transmission structure. The second cylinder 32 serves as the power drive source for the clamping action. Its piston rod extension and retraction movement drives the two sets of swing arms 35 to swing synchronously, and then transmits power through the connecting blocks 36, driving the two sets of clamping plates 33 to move towards each other or separate away from each other along the linear guide rail 37.

[0053] Each clamping plate 33 has two sets of symmetrically distributed positioning pins 34 fixed on its front end face. When the two sets of clamping plates 33 move towards each other to the closed position, the four sets of positioning pins 34 simultaneously fit against the outer wall of the plastic flange to form a circumferentially encircling clamping structure, thereby achieving reliable clamping and centering of the plastic flange and ensuring the centering accuracy of subsequent welding.

[0054] like Figure 2 , Figure 3 and Figure 7 As shown, the heating assembly 5 includes a tilting frame 13. A heating plate 14 is fixedly mounted at the front center of the tilting frame 13 and has a built-in heating wire for generating the heat required for welding.

[0055] The support assembly 4 has a side plate 12 on each of its left and right sides. The side plate 12 is slidably engaged with the second piston rod 17 on the corresponding side via a slide block. The side plate 12 can slide along the axial direction of the second piston rod 17, thereby driving the entire heating assembly 5 to move back and forth.

[0056] The bottom ends of the tilting frame 13 are hinged to the side plates 12 on both sides, allowing the tilting frame 13 to rotate around the hinge points. A first cylinder 15 is also arranged on each of the left and right sides of the support assembly 4. The cylinder body of the first cylinder 15 is hinged to the corresponding side plate 12, and the piston rod of the first cylinder 15 is hinged to the side wall of the tilting frame 13. When the first cylinder 15 extends or retracts, it pushes the tilting frame 13 to rotate around its hinge point with the side plate 12, causing the heating plate 14 to selectively enter or exit the welding area.

[0057] The distance between the second support plate 18 and the rear push plate 11 forms a limiting space. The bottom of the side plate 12 is provided with an integrally formed limiting part 38, which is located within the aforementioned limiting space. When the side plate 12 slides along the second piston rod 17, the limiting part 38 moves within the limiting space, and its front and rear end faces contact the second support plate 18 or the rear push plate 11, thereby limiting the maximum stroke of the side plate 12 and preventing overtravel.

[0058] After welding, the molten material between the flange end face and the plate end face gradually cools and solidifies. Because the plastic flange is thicker at its center, its solidification speed is slower than that of the outer edge area. If the traditional method of welding first and then drilling is followed, the mechanical vibration generated during drilling can easily be transmitted to the cooled welded area, which may induce micro-cracks or cause the weld to crack, seriously affecting the connection strength.

[0059] In this invention, the plastic flange is under pressure, and drilling and welding are carried out simultaneously. Drilling directly removes part of the material in the welding area, forming a through hole, which changes the heat conduction path and heat dissipation area, thus solving the problem of asynchronous curing between the center and the edge when welding thick-walled plastic flanges.

[0060] like Figure 11 As shown, when the contact surfaces of the plastic sheet and the plastic flange are uneven, a local cavity will be formed after they are fixed together. Using the traditional process of welding first and then drilling, this cavity structure will cause welding defects at the hole wall, affecting the connection quality.

[0061] In this application, welding and drilling are performed simultaneously. The molten material in the central region is not yet fully solidified and still has a certain degree of fluidity. The pressure applied by the second pull-rod type double-outlet cylinder 16 forces the molten material to flow into the low-pressure area (i.e., the gap between the drill bit 30 and the hole wall). When the drill bit 30 is withdrawn, this material solidifies in the gap, forming a continuous sealing layer, thereby effectively filling and sealing the welding defects at the hole wall.

[0062] This invention integrates drilling and welding within the same workstation and clamping cycle, eliminating auxiliary time such as workpiece transfer, secondary clamping, and tool resetting, thus significantly improving production efficiency. Simultaneously, it avoids scrap rates caused by secondary clamping errors, reducing overall manufacturing costs. Its overall operating principle is as follows.

[0063] I. Board Adjustment and Positioning

[0064] Before starting the operation, adjust the nuts on each guide rod 43 to change the relative position of the limiting plate 42 and complete the left and right direction limiting and positioning of the plastic sheet.

[0065] The plastic sheet is placed in the placement space formed by the limiting groove 39, and the plastic sheet is supported by the shafts 46 at both ends of the frame 1.

[0066] The third cylinders 48 at both ends operate synchronously, driving the rotating shaft 50 to slide along the slide groove 49, causing the shaft 46 to arch or fall, thereby adjusting the height of the plastic sheet and adjusting the alignment of the welding points.

[0067] The welding assemblies 2 at each installation position work synchronously. The first pull rod type double-outlet cylinder 10 drives the front push plate 8 to move horizontally along the Y axis until the front push plate 8 is pressed against the plastic sheet, thus completing the clamping and fixing of the plastic sheet.

[0068] II. Flange clamping and centering

[0069] After the plate is positioned, the plastic flange is loaded manually or by a robotic arm. The second cylinder 32 drives the two sets of swing arms 35 to swing synchronously, and through the connecting block 36, the two sets of clamping plates 33 move towards each other and close along the linear guide rail 37.

[0070] When the two sets of clamping plates 33 are closed in place, the four sets of positioning pins 34 simultaneously fit against the outer wall of the plastic flange to form a circumferential encircling clamp, realizing automatic centering and stable clamping of the plastic flange, effectively ensuring the alignment accuracy between the plastic flange and the welding point.

[0071] III. Flange hot melt welding

[0072] A welding area is formed between the clamping assembly 7 and the front push plate 8. During welding operations, the first cylinder 15 drives the tilting frame 13 to tilt, causing the heating plate 14 to move into the welding area.

[0073] The second lever-type double-outlet cylinder 16 is activated, and its cylinder body drives the clamping assembly 7 and the clamped plastic flange to move as a whole relative to the second piston rod 17 along the Y-axis direction via the first support plate 20.

[0074] As the clamping assembly 7 is fed forward, the end face of the plastic flange comes into contact with the inner end face of the heating plate 14, pushing the entire heating assembly 5 to slide along the second piston rod 17, so that the outer end face of the heating plate 14 fits against the surface of the plastic sheet. At this time, the heating plate 14 simultaneously heats the end face of the plastic flange and the end face of the plastic sheet, so that both reach the appropriate welding temperature, providing conditions for subsequent butt welding.

[0075] After the heat is melted, the second pull-rod type double-outlet cylinder 16 reverses its movement, and the second support plate 18, which is fixed to the cylinder body, drives the heating component 5 to retract along the second piston rod 17, causing the heating plate 14 to separate from the end face of the plastic sheet. After the heating plate 14 is completely separated from the plastic sheet, the first cylinder 15 drives the flipping frame 13 to flip and reset, moving the heating plate 14 out of the welding area.

[0076] Subsequently, the second lever-type double-outlet cylinder 16 performs the feeding action again, driving the clamping assembly 7 to press the plastic flange tightly against the welding surface of the plastic sheet, and continuously pressurize to the preset pressure value.

[0077] IV. Post-drilling treatment

[0078] For weld points that require subsequent drilling, drilling assembly 3 performs drilling operations simultaneously during the flange pressure holding and cooling stage.

[0079] While the clamping assembly 7 presses and fixes the plastic flange to the welded surface of the plate, the drive motor 26 drives the transmission rod 28 to rotate via the reducer 22, causing the drill bit 30 to rotate synchronously at high speed. The electric cylinder 25 drives the fourth support plate 23 to feed forward, and the drill bit 30 passes through the through hole 31 on the first support plate 20 to perform drilling on the corresponding positions of the plastic flange and the plastic plate.

Claims

1. A plate welding machine for offshore floating photovoltaic projects, comprising a frame (1), characterized in that: The frame (1) has placement spaces for accommodating plates at its left and right ends. At least one welding assembly (2) is mounted on the platform of the frame (1). The welding assembly (2) includes a drilling assembly (3), a support assembly (4), a heating assembly (5), a clamping assembly (7), a front push plate (8), and a base (9). The base (9) is mounted on the platform of the frame (1). The front push plate (8) slides back and forth relative to the base (9) to clamp and release the plates. The drilling assembly (3) is located at the rear end of the base (9) and reciprocates along the front-back direction of the base (9). The support assembly (4) is located at the front end of the base (9) and reciprocates along the front-back direction of the base (9). The clamping assembly (7) forms a circumferentially encircling clamping structure for the workpiece to achieve clamping and centering. A welding area is formed between the clamping assembly (7) and the front push plate (8). The heating assembly (5) is movably mounted on the support assembly (4) to enter or exit the welding area. The support assembly (4) includes a first support plate (20) and a second support plate (18) from front to back. The clamping assembly (7) is mounted on the side of the first support plate (20) facing the front push plate (8). A second pull rod type double-outlet cylinder (16) is provided between the second support plate (18) and the first support plate (20). The second piston rod (17) of the second pull rod type double-outlet cylinder (16) is connected to the front push plate. (8) Fixed connection; the drilling assembly (3) includes a fourth support plate (23), a transmission rod (28), and a third support plate (24) parallel to the fourth support plate (23). The third support plate (24) is fixedly connected to the first support plate (20) through a second support rod (27). The second support rod (27) passes through the fourth support plate (23) to form a sliding fit. An electric cylinder (25) is provided on the third support plate (24). The output end of the electric cylinder (25) is fixedly connected to the fourth support plate (23) to drive the fourth support plate (23) to slide back and forth relative to the base (9). The axis of the transmission rod (28) extends along the front and rear direction of the base (9). 8) A drill bit (30) is provided at one end facing the front push plate (8). A through hole (31) for the drill bit (30) to pass through is provided on the first support plate (20). A reducer (22) is provided on the fourth support plate (23). A drive motor (26) is provided at the input end of the reducer (22). The output end of the reducer (22) is connected to the transmission rod (28). The drilling assembly (3) is configured to perform drilling operations while the clamping assembly (7) maintains a preset clamping pressure. The clamping assembly (7) applies a constant pressure to the workpiece. The molten material in the welding center area that has not been completely solidified is squeezed into the gap between the drill bit (30) and the hole wall by the pressure. After cooling, a continuous sealing layer is formed.

2. The plate welding machine for offshore floating photovoltaic projects according to claim 1, characterized in that: The heating assembly (5) includes a tilting frame (13), on which a heating plate (14) is provided. A side plate (12) that slides along the front and rear direction of the base (9) is installed on the support assembly (4). The tilting frame (13) is hinged to the side plate (12). A first cylinder (15) is hinged between the side plate (12) and the tilting frame (13).

3. The plate welding machine for offshore floating photovoltaic projects according to claim 1, characterized in that: An adjustment mechanism (6) is provided in the placement space. The adjustment mechanism (6) includes a mounting base (44) and a third cylinder (48). The mounting base (44) is installed inside the placement space. The left end of the mounting base (44) is connected to a rotating shaft (50) that can slide left and right. The right end of the mounting base (44) is hinged to a second connecting plate (47). A first connecting plate (45) is hinged to the second connecting plate (47). The first connecting plate (45) is rotatably connected to the rotating shaft (50). A shaft (46) for supporting the plate is provided at the hinge point between the first connecting plate (45) and the second connecting plate (47). The cylinder body of the third cylinder (48) is hinged to the mounting base (44). The piston rod of the third cylinder (48) is rotatably connected to the rotating shaft (50).

4. The plate welding machine for offshore floating photovoltaic projects according to claim 1, characterized in that: The clamping assembly (7) includes a second cylinder (32) and two sets of clamping plates (33) arranged opposite to each other. The clamping plates (33) are installed on the front end face of the support assembly (4). The second cylinder (32) synchronously drives the two sets of clamping plates (33). The two sets of clamping plates (33) slide up and down relative to the support assembly (4) to achieve separation and closure.

5. The plate welding machine for offshore floating photovoltaic projects according to claim 4, characterized in that: The clamping plate (33) has two sets of symmetrically distributed positioning posts (34) on the side facing the push plate (8).

6. The plate welding machine for offshore floating photovoltaic projects according to claim 1, characterized in that: It also includes two sets of limiting plates (42), which are respectively set at the left and right ends of the frame (1). The limiting plates (42) are arranged facing the placement space. Guide rods (43) are respectively set on the left and right side walls of the frame (1). The guide rods (43) pass through the corresponding limiting plates (42) to form a sliding fit.

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