Automatic welding equipment and method for high-strength geocell sheets

Abstract

The present invention relates to an automatic welding device and method for high-strength geocell sheets, wherein the automatic welding device for high-strength geocell sheets comprises a plurality of welding machines sequentially arranged on a frame along the length direction, and the welding machine comprises two relatively arranged sliding supports, a heating plate located between the two sliding supports, and two first cylinders respectively driving the two sliding supports to move relative to each other and a second cylinder driving the heating plate to move along the width direction of the cell sheet. The beneficial effects of the present invention are as follows: the connection parts on the two cell sheets are heated to a molten state at the same time by the heating plate, and the two cell sheets are pressed against each other by the sliding support, so as to form a firm bond at the molten state, thereby ensuring the connection strength of the cell sheet after welding; the heating plate not only plays a heating role, but also utilizes the movement of the heating plate to push the welded cell sheet out of the welding position, which is convenient for the staff to take out, and greatly improves the production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of geocell processing equipment, in particular to the field of production and processing equipment of high-strength geocells of geosynthetics, and specifically refers to automatic welding equipment and a welding method for high-strength geocell sheets. Background Art

[0002] Traditional geocells are made of polyethylene plastic (PE) and synthetic polyester plastic (PET) as the main raw materials, which are heated and plasticized by an extruder, extruded into molten material by a sheet die, pressed into plates by three rollers, and cut into long strips by a slitting machine. The long strips are then welded together in pairs by an ultrasonic welding machine, and after unfolding, they become three-dimensional honeycomb-shaped geocell construction materials. High-strength geocell is made of polypropylene (PP) as raw material, with masterbatch and reinforcing agent, and extruded into a plate through a heating and melting die head mold of an extruder, and extruded into a long strip plate with equidistant raised ridges and transverse ribs in the longitudinal direction through a special three-roller extrusion, cut into long strips of equal width by an equidistant slitting knife, and then heated in an oven and stretched longitudinally into a dumbbell-shaped high-strength geocell sheet with a uniform and repeated plane projection pattern according to a certain stretching multiple, and collected into a disc-shaped high-strength cell sheet semi-finished product by a winder, and heated and melted by a special high-strength cell sheet welding machine, and the transverse ribs with raised ridges of the long strip sheet are interlaced and bonded together, and then unfolded to form a high-strength geocell geosynthetic construction material with a three-dimensional honeycomb grid structure. The polyethylene (PE) used in ordinary geocells is pressed into a plate by a three-roller agent and then directly cut into strip sheets and welded into geocell products by an ultrasonic welder. High-strength geocell is made of polypropylene (PP) as raw material. After the three-roll extrusion plate is formed, it needs to be stretched a certain multiple in the longitudinal stretching oven. After stretching, the originally scattered chain molecules of the polymer material are redirected into a linear state, which fully improves the tensile strength of the geocell sheet.

[0003] In the mid-1970s, infrastructure construction in developed Western countries developed rapidly.

[0004] It is necessary to solve the problem of unstable load support of natural rocks and soil compared with steel and flood concrete. Due to the natural properties of natural rocks and soil particles, they are composed of loose particles of various sizes. They can roll, slide and cross each other under load, so they have low anti-extrusion and shear strength. They will produce large deformation or looseness under one or more loads, which seriously affects the service life of the roadbed design strength requirements. Based on the idea that asphalt and cement are generally used to enhance the stability of loose materials and restrict their rolling, sliding and crossing, engineers want to design a product for roadbed construction to overcome the inherent weakness of loose materials. The three-dimensional grid allows the bulk material to bear the constraint force, limit the lateral displacement of the material, and improve the local overall bearing capacity. The research results show that the three-dimensional grid of the geocell can effectively improve the stability of the filling bulk material under load and meet the requirements of synthetic geotechnical material construction.

[0005] After the geocell products were put on the market, they were recognized by many relevant engineering and technical personnel and are now widely used in infrastructure construction projects of highways, railways, airports, docks, deserts, and beaches. In recent years, due to the requirements of improved construction quality, longer service life of infrastructure construction, and improved production efficiency, the following problems need to be solved urgently: 1. The raw materials of ordinary geocells are made of polyethylene (PE) or polyester (PET). The tensile strength of polyethylene is relatively low compared to polypropylene. In addition, ordinary geocells are directly cut into long strips and welded after three-roll extrusion of the sheet. There is no stretching to rearrange the linear arrangement of its molecular structure, which cannot meet the technical requirements of some high-strength roadbed construction. A large amount of test data proves that polyester (PET) materials are not resistant to saline-alkali environments, especially geocells are difficult to maintain their due strength requirements in alkaline soil environments. 2. The extruded sheet of ordinary geocells is thin, and the ultrasonic welding points are easy to be welded through, and they cannot be processed after welding. They can only be scrapped or retained for use with quality defects, and the low pass rate of shift production is seriously wasted. 3. The ultrasonic welding head is made of alloy casting material, and the processing cost is very high. The ultrasonic transducer makes the welding head vibrate at high frequency, friction generates heat and melts the polymer material. The welding head contact is easy to wear, crack and other damages and cannot be repaired and used. The production cost of the product is high. The ultrasonic transducer and the electrical components of the control box are easy to be damaged and the maintenance cost is also high. 4. In recent years, special bolts or pins, rivets, plugs and other methods have been used to replace ultrasonic welding machines to connect geocell sheets to form geocell products. During construction, there are problems such as low connection strength, easy detachment of connection points, and no resistance to shear force. Moreover, this assembly method cannot be used with mechanized and automated equipment, and mainly relies on manual operation, which has the characteristics of high labor intensity, low production efficiency, and unstable quality. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a high-strength geocell sheet automatic welding device and a welding method, which have a high degree of automation and greatly improve production efficiency.

[0007] The present invention is achieved through the following technical scheme, providing a high-strength geocell automatic welding device, including a plurality of welding machines arranged on a frame in sequence along the length direction, the welding machine including two relatively arranged sliding supports, a heating plate located between the two sliding supports, and two first cylinders respectively driving the two sliding supports to move relative to each other and a second cylinder driving the heating plate to move up and down along the width direction of the geocell.

[0008] When the present solution is in use, two cell sheets are placed on both sides of the heating plate respectively, the cell sheets are pressed against the surface of the heating plate by the first cylinder, the cell sheets are heated by the heating plate, so that the corresponding connections on the two cell sheets are in a molten state, and then the first cylinder retreats, and the heating plate is driven to separate from the cell sheets by the second cylinder, and the first cylinder is extended again to press the two cell sheets together, and the molten parts are bonded together, the first cylinder contracts, and the second cylinder extends, driving the heating plate to move, and the welded cell sheets are pushed out from between the two sliding supports by the heating plate, so as to facilitate the removal operation.

[0009] As an optimization, the two sliding supports are provided with slots adapted to the transverse ribs of the cell sheets on the opposite sides. This optimization solution provides the slots, and when placing the cell sheets, the transverse ribs are inserted into the slots, which facilitates the positioning of the cell sheets and ensures that the two cell sheets are aligned, thereby improving product quality.

[0010] As an optimization, a cell sheet clamping device is provided on the sliding support. This optimization solution fixes the cell sheet and the sliding support relatively by providing the cell sheet clamping device, thereby avoiding the cell sheet from being misaligned and ensuring the accuracy of the welding position.

[0011] As an optimization, the cell sheet clamping device includes a clamping cylinder mounted on a sliding support and a pressing plate fixed to the telescopic end of the clamping cylinder, and a cell sheet insertion channel is formed between the pressing plate and the sliding support. The cell sheet clamping device of this optimization solution has a simple structure and is easy to operate. The clamping cylinder is used to drive the pressing plate to move, and the clamping action is fast and reliable.

[0012] As an optimization, the cylinder body of the clamping cylinder is fixed on a mounting plate fixed to the sliding support, and a guide shaft parallel to the clamping cylinder and passing through the pressing plate is fixed to the mounting plate. This optimization solution connects the clamping cylinder to the sliding support through the mounting plate, which has a simple structure and is easy to install. It is also convenient to set the guide shaft. By setting the guide shaft, a guide is provided for the movement of the pressing plate, so that the pressing plate can press the cell sheet more accurately and reliably.

[0013] As an optimization, a transverse and / or longitudinal V-shaped groove is provided on the side of the heating plate opposite to the sliding support. This optimization scheme shortens the pressing and melting time by providing the V-shaped groove on the side of the heating plate, and is not easy to adhere to debris.

[0014] As an optimization, positioning blocks are provided on the opposite sides of the two sliding supports. This optimization solution provides positioning blocks to position the cell pieces when placing the cell pieces, making it easier to ensure the alignment of the cell pieces and improving the installation efficiency of the cell pieces.

[0015] As an optimization, a finished product storage platform is provided on the frame at one side of the welding machine, and a baffle extending upward is provided on the edge of the storage platform away from the welding machine. This optimization solution facilitates the placement of the cell pieces of the welded part by setting up the finished product storage platform to ensure the smooth progress of the subsequent welding, and prevents the cell pieces from falling by setting up the baffle.

[0016] As an optimization, the frame is also provided with a cell sheet material box located on the other side of the welding machine and extending in the length direction. This optimization scheme facilitates the storage of cell sheets to be welded by providing a cell sheet material box to ensure the continuity of welding and improve production efficiency.

[0017] This solution also provides a welding method for a high-strength geocell sheet, comprising the following steps:

[0018] 1. Turn on the switch of the heating plate to raise the temperature of the heating plate surface to 250~260 degrees;

[0019] 2. Open the clamping device, insert the transverse reinforcement of the geocell into the slot of the sliding support, insert the geocell in a cross-displaced manner with one welding machine at a time, close the clamping device, and fix the geocell and the sliding support relatively;

[0020] 3. After all welding points are inserted, the first cylinder extends to push the sliding support toward the heating plate, and the cell sheets on the two sliding supports are pressed against the two surfaces of the heating plate respectively. After 5 to 6 seconds, the first cylinder contracts to drive the sliding support back;

[0021] 4. The second cylinder contracts, driving the heating plate to fall to the relative position away from the two sliding supports. The first cylinder extends again, pushing the sliding support to press the cell sheets that have been heated and melted in step 3 together. After 5 to 6 seconds, the first cylinder drives the sliding support to retreat again. The parts on both sides of the welding point on the cell sheet are elastically deformed and displaced by tension, and the welding point will not be peeled off.

[0022] 5. The second cylinder extends out, pushing the heating plate upward, ejecting the welded cell pieces from the slots of the sliding supports, and then lifting and pushing the welded cell pieces to the finished product storage platform, and then entering the next welding cycle until the specified length is met, completing the production of a set of high-strength geocell products.

[0023] The beneficial effects of the present invention are as follows: the connection parts on the two cell sheets are heated to a molten state at the same time by the heating plate, and the two cell sheets are pressed against each other by the sliding support, so that a firm bond is formed at the molten position, thereby ensuring the connection strength of the cell sheets after welding; the heating plate not only plays a heating role, but also utilizes the movement of the heating plate to push the welded cell sheets out of the welding position, which is convenient for the staff to take out, thereby greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the welding equipment of the present invention;

[0025] Figure 2 for Figure 1 The enlarged view of the position indicated by serial number 4;

[0026] Figure 3 for Figure 1 The enlarged view at position Ⅰ in the middle;

[0027] Figure 4 This is a front view of the welding equipment of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the welding machine of the present invention;

[0029] Figure 6 for Figure 5 The enlarged view at position Ⅰ in the middle;

[0030] Figure 7 for Figure 5 Enlarged view at center Ⅱ;

[0031] Figure 8 for Figure 5 Enlarged view at center Ⅲ;

[0032] Fig. 9 This is a front view of the welding machine of the present invention;

[0033] Fig.10 for Fig. 9 Side view of

[0034] Fig.11 for Fig. 9 A top view of

[0035] Fig.12 This is a schematic diagram of the sliding support structure of the present invention;

[0036] Fig.13 for Fig.12 A top view of

[0037] Fig.14 for Fig.12 The enlarged view at position Ⅰ in the middle;

[0038] Fig.15This is a schematic diagram of the heating plate structure of the present invention;

[0039] Fig.16 for Fig.15 The enlarged view at position Ⅰ in the middle;

[0040] As shown in the figure:

[0041] 1. Cell sheet material disk, 2. Rotating disc, 3. Suction fan, 4. Welding machine, 5. Finished cell product, 6. Finished product storage platform, 7. Rack, 8. Main control box, 9. Upper cover, 10. Spring card, 11. Right cover, 12. Rear cover, 13. Cell sheet material box, 14. Suction pipe, 15. Heating plate, 16. Electric heating tube, 17. Press plate, 18. Sliding support, 19. Positioning block, 20. First cylinder, 21. First cylinder seat, 22. Clamping cylinder, 23. Welding machine box, 24. Cell sheet, 25. Piston rod of second cylinder, 26. Mounting bracket, 27. Second cylinder, 28. Slider, 29. Guide rail, 30. Guide shaft, 32. Mounting seat, 33. Mounting plate, 34. V-shaped groove, 35. Card slot. DETAILED DESCRIPTION

[0042] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0043] like Figure 1 The high-strength geocell automatic welding equipment shown in the figure includes a cell sheet material box 13, a finished product storage platform 6, a rotating disc 2, a dust removal system, a main control box 8, a frame 7, and a plurality of welding machines 4 arranged on the frame 7 in sequence along the length direction of the cell sheet. The spacing between adjacent welding machines is equal, and the welding machines are all located on the upper plane of the frame. Under the control of the PLC preset program, each actuator of each welding machine completes its specified action according to the set action sequence and time.

[0044] The frame is a welding structure, and a welding machine case, an upper cover plate 9, a right cover plate 11, a left cover plate, a front cover plate and a rear cover plate 12 are fixedly connected to the frame. The upper cover plate 9, the right cover plate 11, the left cover plate, the front cover plate, the rear cover plate 12 and the welding machine case form a dust-collecting enclosed space. The welding machine is installed on the welding machine case. An air suction port with a length of 80 mm and a width of 40 mm is provided on the plane of the welding machine case. An air outlet connected to the inside of the welding machine case is provided on the rear cover, and the air outlet corresponds to the welding machine one by one.

[0045] When the cell sheet is pressed tightly against the heating plate to heat and melt, a small amount of smoke will be emitted. In order to ensure the health of workers and the needs of environmental protection, a dust removal system is provided in this embodiment. The dust removal system includes a suction fan 3 and a suction pipe 14. One end of the suction pipe 14 is connected to the air outlet on the rear cover plate, and the other end is connected to the air inlet of the suction fan 3. To ensure the suction effect, all holes on the outside of the welding machine case and the frame are sealed with sealant on the cover plate. When the fan is running, negative pressure is formed inside the frame and the welding machine case. External air can only enter from the 40*80mm suction port in the middle of the upper part of the welding machine case, so that the smoke on the heating plate in the middle is sucked away, and the smoke exhaust pipe is sent to a special environmental protection treatment equipment for treatment and discharge.

[0046] The welding machine includes two relatively arranged sliding supports 18, a heating plate 15 located between the two sliding supports, and two first cylinders 20 respectively driving the two sliding supports to move relative to each other and a second cylinder 27 driving the heating plate to move up and down along the width direction of the cell sheet. The first cylinder 20 is installed on the welding machine case 23 through the first cylinder seat 21, and the second cylinder 27 is installed on the welding machine case 23 through the mounting bracket 26. In order to improve the stability of the movement of the heating plate, the second cylinder 27 of this embodiment is a double-axis cylinder, and the upper end of the piston rod 25 of the second cylinder is connected to the mounting seat 32, and the heating plate is fixed on the mounting seat. A through hole is opened on the welding machine case for the heating plate to pass through when it moves up and down, and the through hole also serves as the only air inlet when the suction fan sucks air.

[0047] The welding principle of the high-strength cell sheet welding machine of this embodiment is: the heating plate 15 is made to reach the melting temperature of polypropylene through the electric heating tube 16, and the transverse ribs of the two melted cell sheets that need to be bonded together are aligned and pressed into one. This connection method relies on the force between polymers to connect, so that the mechanical detection technical indicators of the high-strength geocell connection, such as peeling force, tensile strength, and shear resistance, are far superior to traditional connection methods such as ultrasonic, bolts, rivets, and plug-in, and can meet the requirements of high-strength construction.

[0048] The opposite sides of the two sliding supports are provided with slots 35 adapted to the transverse ribs of the cell sheets. In order to quickly and accurately install the high-strength format sheet in the slot of the sliding support, it is ensured that the welding parts of the two cell sheets are aligned left and right and equal in height from top to bottom. The slot depth of the sliding support is adapted to the transverse ribs, and the extruded edges of the slot are chamfered or rounded, so that the cell sheet 24 can be automatically aligned and stuck in the slot when it is pushed and pressed. A positioning block 19 is provided at the lower part of the opposite sides of the two sliding supports. The positioning block 19 is also stuck in the slot 35, and the side protrudes from the slot to limit the insertion depth of the transverse ribs of the cell sheet welding, so as to ensure the uniform height of the welding surface. Under the action of gravity, the lower part of the welding part can be close to the upper end of the positioning block, so as to achieve the equal height requirement, so that the product welding point has a beautiful appearance, and the connection point has a large area and high strength. The height of the positioning block 19 is adjustable to meet the welding requirements of cell sheets of different widths.

[0049] The motion structure relationship of the sliding support in this embodiment is that the slider 28 slides linearly on the guide rail 29, and the sliding support is fixed to the slider 28. When the first cylinder is actuated, the sliding support moves, and the guide rail and the first cylinder support are both fixed to the welded chassis of the frame.

[0050] The sliding support is provided with a cell sheet clamping device. The cell sheet clamping device of this embodiment includes a clamping cylinder 22 installed on the sliding support and a pressing plate 17 fixed to the telescopic end of the clamping cylinder. The pressing plate 17 is an elastic pressing plate. A cell sheet insertion channel is formed between the pressing plate and the sliding support. After the two cell sheets are inserted, they are aligned left and right and have the same height up and down. Specifically, the cylinder body of the clamping cylinder is fixed to a mounting plate 33 fixed to the sliding support 18. A guide shaft 30 parallel to the clamping cylinder and passing through the pressing plate 17 is fixed to the mounting plate. The clamping cylinder is fixed to the mounting plate and slides with the sliding support. The function of the guide shaft 30 is to provide guidance for the linear motion of the elastic pressing plate. When the elastic pressing plate is opened, the high-strength cell sheet is inserted. When it returns to its original position, the pressed cell sheet moves with the sliding support without changing position, so that the cell sheets bonded together are aligned left and right and have the same height up and down.

[0051] After the cell piece is inserted into the slot of the sliding support, it is clamped by an elastic pressure plate to prevent the spatial position of the welding part of the cell piece in the slot from changing when the first cylinder pushes the sliding support to move. The pressure plate of this embodiment is made of 65Mn spring steel and is formed and quenched by a press mold. It has good rigidity, elasticity, and clamping force. The upper end of the pressure plate is chamfered at a right angle or a rounded arc to facilitate the insertion of the cell piece into the slot of the sliding support. Its shape and structure are ingenious, and the movements do not interfere with each other.

[0052] The heating plate is provided with a mounting through hole, in which an electric heating tube 16 and a thermocouple sensor are installed, so as to realize automatic control of energy-saving constant temperature of the heating plate. The terminal of the heating tube extends downward from the lower end of the mounting through hole for easy wiring. The temperature control of the heating plate is controlled by the heating tube and the thermocouple sensor. The set temperature can realize intelligent automatic control with an error of 2 to 3 degrees. The set temperature can be 255 degrees, and the pressing and melting time can be set to 6 seconds, so as to achieve the purpose of short time and high strength of welding point.

[0053] The welding quality of the high-strength cell sheet is closely related to the temperature of the heating plate and the surface geometry of the heating plate. In order to ensure the strength requirements of the welding point, reduce the welding time, improve the work efficiency and prevent the surface from sticking to the molten polymer material, this embodiment is provided with transverse and longitudinal V-grooves 34 on the side opposite to the sliding support of the heating plate. The depth of the V-groove 34 is 1.5mm, the surface of the V-groove is deburred and polished, the edges are chamfered, and a chrome plating layer is provided on the surface of the V-groove. After electrical treatment, it is polished with a cloth wheel polishing process, so that the welding point has high strength, the compression and melting time is short, and the adhesion of debris is reduced. Even if there is a small amount of debris, it is easy to clean.

[0054] The finished product storage platform 6 is located on one side of the welding machine on the frame. An upwardly extending baffle is provided on the edge of the finished product storage platform away from the welding machine. By setting up the finished product storage platform, it is convenient to place the finished cell product 5.

[0055] The cell sheet material box 13 is arranged on the side of the welding machine on the frame away from the finished product storage platform 6 and extends in the length direction. The cell sheet material disk 1 is unfolded by rotating the disc 2 and arranged one by one in the cell sheet material box 13. Spring cards 10 are provided at both ends of the cell sheet material box to clamp the cell sheet in place and avoid misalignment of the welding points of each cell sheet, so as to facilitate taking, reduce the labor intensity of workers, improve production efficiency, and realize continuous welding operation.

[0056] The main control box 8 is the electrical control center of the high-strength geocell automatic welding equipment. The action instructions of each electrical switch are issued by the PLC. One-key operation of each actuator automatically completes various prescribed actions according to the preset program, realizing intelligent, automated and efficient production.

[0057] The welding method using the automatic welding equipment for high-strength geocell sheets of this embodiment includes the following steps:

[0058] 1. Turn on the switch of the heating plate to raise the temperature of the heating plate surface to 250~260 degrees, and prepare the sheet in the geocell sheet box;

[0059] 2. Use your foot to step on the foot control switch of the clamping cylinder to open the clamping device, so that a channel for inserting the cell sheet is formed between the pressing plate and the sliding support. Take the high-strength geocell sheet from the geocell sheet box manually, insert the transverse ribs of the geocell sheet into the slot of the sliding support, release the pedal switch of the clamping cylinder, close the clamping device, return the pressing plate to press the cell sheet, so that the position of the cell sheet and the sliding support are relatively fixed, and the cell sheet is inserted crosswise and dislocated every other welding machine at a time;

[0060] 3. After all welding points are inserted, start the switch to start the pressing and melting, pressing and bonding, and unloading actions; the action starts with the first cylinder extending to push the sliding support toward the heating plate, and the cell sheets on the two sliding supports are pressed tightly against the two surfaces of the heating plate. After 5 to 6 seconds, the first cylinder contracts to drive the sliding support back;

[0061] 4. The second cylinder contracts, driving the heating plate to fall to a relative position away from the two sliding supports. The first cylinder extends again, pushing the sliding support to press the cell sheets that have been heated and melted in step 3 together. After 5 to 6 seconds, the first cylinder drives the sliding support back again, and the cell sheets are elastically deformed on both sides of the welding point, so that the welding point will not be peeled off.

[0062] 5. The second cylinder extends out, pushing the heating plate upward, ejecting the welded cell pieces from the slots of the sliding supports, and then lifting and pushing the welded cell pieces to the finished product storage platform, and then entering the next welding cycle until the specified length is met, completing the production of a set of high-strength geocell products.

[0063] In order to meet the market demand for high-strength geocell products with a width of 6 meters, this embodiment arranges 11 cell sheet welding machines in parallel on each frame, and uses PLC program control technology. When the cell sheet is positioned, several welding machines are operated by one key to simultaneously press and melt, push out and withdraw the heating plate, press and stick the cell sheet together, and raise and withdraw the heating plate. The equipment can produce 6*12 meter geocell products, and the unit product laying area is nearly twice that of traditional geocells, which greatly improves the construction efficiency of the construction site.

[0064] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A welding method for high-strength geocell sheet automatic welding equipment, characterized in that: The high-strength geocell sheet automatic welding equipment comprises a plurality of welding machines (4) arranged in sequence on a frame (7) along a length direction, the welding machines comprising two sliding supports (18) arranged opposite to each other, a heating plate (15) located between the two sliding supports, and two first cylinders (20) respectively driving the two sliding supports to move relative to each other and a second cylinder (27) driving the heating plate to move up and down along the width direction of the geocell sheet; The sliding support is provided with a cell sheet clamping device; The welding method comprises the following steps: a. Turn on the switch of the heating plate to raise the temperature of the heating plate surface to 250~260 degrees; b. Open the clamping device, insert the transverse reinforcement of the geocell into the slot of the sliding support, insert the geocell in a cross-displaced manner with one welding machine at a time, close the clamping device, and fix the geocell and the sliding support relatively; c. After all welding points are installed, the first cylinder extends to push the sliding support toward the heating plate, and the cell sheets on the two sliding supports are pressed against the two surfaces of the heating plate respectively. After 5 to 6 seconds, the first cylinder contracts to drive the sliding support back; d. The second cylinder contracts, driving the heating plate to fall to a position away from the relative position of the two sliding supports. The first cylinder extends again, pushing the sliding support to press the cell sheets heated and melted in step (3) together. After 5 to 6 seconds, the first cylinder drives the sliding support (18) to retreat again. e. The second cylinder extends out, pushing the heating plate upward, ejecting the welded cell pieces from the card slots of the sliding support, and then lifting and pushing the welded cell pieces to the finished product storage platform, and then entering the next welding cycle until the specified length points are met, that is, the production of a group of high-strength geocell products is completed.

2. The welding method of the high-strength geocell sheet automatic welding equipment according to claim 1 is characterized in that: The two sliding supports are provided with slots (35) adapted to the cell sheet transverse ribs on opposite sides thereof.

3. The welding method of the high-strength geocell sheet automatic welding equipment according to claim 1 is characterized in that: The cell sheet clamping device comprises a clamping cylinder (22) mounted on a sliding support and a pressing plate (17) fixedly connected to the telescopic end of the clamping cylinder, wherein a cell sheet insertion channel is formed between the pressing plate and the sliding support.

4. The welding method of the high-strength geocell sheet automatic welding equipment according to claim 3 is characterized in that: The cylinder body of the clamping cylinder is fixed on a mounting plate (33) fixed to the sliding support, and a guide shaft (30) parallel to the clamping cylinder and passing through the pressing plate (17) is fixed to the mounting plate.

5. The welding method of the high-strength geocell sheet automatic welding equipment according to claim 1 is characterized in that: A transverse and / or longitudinal V-shaped groove (34) is provided on the side of the heating plate opposite to the sliding support.

6. The welding method of the high-strength geocell sheet automatic welding equipment according to claim 1 is characterized in that: Positioning blocks (19) are provided on opposite sides of the two sliding supports.

7. The welding method of the high-strength geocell sheet automatic welding equipment according to claim 1 is characterized in that: A finished product storage platform (6) is provided on the frame and is located on one side of the welding machine. An edge of the finished product storage platform, which is away from the welding machine, is provided with a baffle extending upward.

8. The welding method of the high-strength geocell sheet automatic welding equipment according to claim 7 is characterized in that: The frame is also provided with a cell sheet material box (13) which is located on the other side of the welding machine and extends in the length direction.

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