A continuous feeding geogrid welding system and its application method

Abstract

This invention relates to a continuous feeding geogrid welding system and its usage method, comprising a welding mechanism and two automatic transverse strip copying and transfer mechanisms. Each automatic transverse strip copying and transfer mechanism includes a single-sided transfer mechanism located at both ends of the transverse strip. Each single-sided transfer mechanism includes a fixed frame, two movable seats slidably mounted on the fixed frame, and a transfer drive that drives the two movable seats to reciprocate along the geogrid conveying direction. Telescopic cylinders are fixedly connected to the movable seats, and clamping plates are fixedly connected to the telescopic shafts of the telescopic cylinders. The two clamping plates of the single-sided transfer mechanism move up and down in opposite directions. This invention, through the alternating automatic transverse strip copying and transfer mechanisms, ensures the continuity and efficiency of the entire production process. While completing the automatic welding of the transverse strips, it also achieves tensioning, shaping, and fixing of the product throughout the entire process from product welding to complete cooling of all weld points, significantly reducing and avoiding product deformation caused by welding.

Description

Technical Field

[0001] This invention relates to the field of geogrid processing, and more particularly to the field of geogrid hot-melt welding, specifically to a continuous feeding geogrid welding system and its usage method. Background Technology

[0002] Geogrids are an important geosynthetic material, generally consisting of a mesh structure composed of transverse and longitudinal strips. Geogrids are processed in several ways, including stretching, weaving, and welding. Welding is a method of connecting transverse and longitudinal strips through hot-melt welding. Currently, there are automatic welding devices for geogrids on the market. For example, invention patent CN103056564A discloses a geogrid welding machine. The machine feeds the material transversely through a feeding device, and the controller controls the welding head to weld the overlap between the transverse and longitudinal strips, achieving automatic feeding, automatic cutting, and automatic welding.

[0003] During welding, the welding device moves the welded geogrid. The longitudinal strips extend along the direction of travel, while the transverse strips are perpendicular to the direction of travel. Currently, there are certain defects in the automatic welding device for geogrids. After welding, due to the use of hot melt welding, the transverse strips are prone to deformation caused by the heating and cooling of the hot melt, which affects the planar state of the geogrid.

[0004] Furthermore, during the hot-melt welding of geogrids, the longitudinal strips are continuous, while the transverse strips need to be added sequentially. Currently, the speed at which the longitudinal strips are added cannot keep up with the welding speed, thus affecting the continuity and efficiency of the welding process. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a continuous feeding geogrid welding system and its application method.

[0006] This invention is achieved through the following technical solution: a continuous feeding geogrid welding system is provided, including a welding mechanism and two transverse automatic copying and transfer mechanisms located at the feeding end of the welding mechanism. The transverse automatic copying and transfer mechanism includes a single-sided transfer mechanism located at both ends of the transverse strip. The single-sided transfer mechanism includes a fixed frame, two movable seats slidably connected to the fixed frame, and a transfer drive that drives the two movable seats to reciprocate along the geogrid conveying direction. A telescopic cylinder is fixedly connected to the movable seat, and a clamping plate is fixedly connected to the telescopic shaft of the telescopic cylinder. The two clamping plates of the single-sided transfer mechanism move up and down in opposite directions, and the single-sided transfer mechanisms of the two transverse automatic copying and transfer mechanisms are staggered left and right.

[0007] In this solution, two automatic transverse strip copying and transfer mechanisms alternately transport the transverse strips transferred from the transverse strip feeding and cutting mechanism to the welding mechanism. The single-sided transfer mechanisms of the two automatic transverse strip copying and transfer mechanisms are staggered left and right, so that the two automatic transverse strip copying and transfer mechanisms can alternately and non-interfere to transport the transverse strips to the welding mechanism and achieve end-to-end connection. This eliminates the time occupied by the strip threading, cutting and welding feeding processes, realizes the efficient operation of the welding process, and ensures the continuity and efficiency of the entire production process.

[0008] As an optimization, the transfer drive includes a moving motor, which drives a moving base to reciprocate along the geogrid conveying direction via a lead screw pair. In this solution, the moving motor drives the moving base via a lead screw pair.

[0009] As an optimization, the two clamping plates in the single-sided transfer mechanism simultaneously clamp two or more transverse strips. In this solution, after two or more transverse strips in one automatic transverse strip copying and transfer mechanism are conveyed to the welding mechanism, the other automatic transverse strip copying and transfer mechanism immediately follows.

[0010] As an optimization, the welding mechanism includes a tape feeding and shaping fixture, a welding gun assembly, and an air-cooling mechanism. The tape feeding and shaping fixture includes two single-sided rotary clamping mechanisms, each comprising a fixed support plate, multiple clamp seats slidably connected to the fixed support plate along a ring, and a ring-shaped drive mechanism for moving the multiple clamp seats. The clamp seats are equipped with clamping components for clamping the ends of the transverse strips. The tape feeding and shaping fixture is provided with a stretching station and a shaping station along the direction of movement of the geogrid. In the stretching station, the spacing between the clamping components at both ends of the transverse strip gradually increases. The welding gun assembly and the air-cooling mechanism are both located in the shaping station.

[0011] In this design, the two single-sided rotary clamping mechanisms on the left and right sides clamp the two ends of the transverse strip respectively, and the transverse strip is stretched in the stretching station. After being stretched, it enters the welding gun assembly for hot melt welding and the air cooling mechanism for air cooling. Throughout the welding and cooling process, the transverse strip is in a stretched state, which eliminates welding deformation and stress of the product to the greatest extent and ensures the overall quality of the product.

[0012] As an optimization, the clamping assembly includes a jaw hinged to a fixture seat, the lower end of the jaw having a clamping surface, the clamping surface being an anti-slip plane, a support plate located below the jaw on the fixture seat, an anti-slip pad fixed to the support plate, the transverse strip being clamped between the clamping surface and the anti-slip pad, the end of the single-sided rotary clamping mechanism near the material feeding direction being equipped with a feeding clamping drive that drives the upper end of the jaw to swing downward to clamp the transverse strip, and the end of the rotary clamping mechanism near the material discharging direction being equipped with a discharging release drive that drives the upper end of the jaw to swing upward to release the transverse strip. In this solution, when the clamping seat moves in a ring to the material receiving end, the feeding clamping drive causes the jaws to swing, clamping the transverse strip between the clamping surface and the anti-slip pad. Automatic locking is achieved by using the clamping surface as a plane. When the clamping seat moves in a ring to the material receiving end, the material releasing drive causes the upper end of the jaws to swing upward, releasing the transverse strip, so that the welded transverse strip follows the geogrid into the subsequent process.

[0013] As an optimization, the feeding clamping drive includes a fixedly mounted clamping cylinder, the telescopic shaft of which is located above the gripper. In this solution, the clamping cylinder presses down on each of the gripper passing through this location, thereby achieving clamping.

[0014] As an optimization, the upper end of the gripper is inclined upwards, and the discharge release drive includes a release wheel shafted to a fixed support plate, the release wheel being located below the upper end of the gripper. In this design, the upper end of the gripper is inclined upwards. As the inclined surface passes the release wheel, the distance between the center of the release wheel and the gripper gradually decreases, thus gradually lifting and releasing the gripper upwards. Therefore, each gripper that passes the release wheel can achieve automatic lifting and release.

[0015] As an optimization, the welding torch assembly includes a welding torch mounting bracket and multiple welding cylinders mounted side-by-side on the mounting bracket. A hot melt welding torch is mounted on the telescopic shaft at the lower end of each welding cylinder, and a support platform is located below the hot melt welding torch, situated beneath the transverse strip. In this design, each hot melt welding torch corresponds to each longitudinal strip on the transverse strip. Both the welding cylinder and its telescopic shaft ensure sufficient rigidity to completely resist lateral bending deformation caused by frictional forces resulting from strip welding deformation, thereby ensuring welding quality.

[0016] As an optimization, the air-cooling mechanism includes a bellows located above the transverse strip and a reflector located below the transverse strip, with an air outlet at the lower end of the bellows. In this design, the air outlet blows air onto the upper layer of the transverse strip, and the air passing through the transverse strip is reflected by the reflector and blown onto the lower layer of the transverse strip, achieving overall air-cooling and shaping of the strip.

[0017] A method for using a continuously feeding geogrid welding system includes the following steps:

[0018] a. According to the production cycle requirements, the transverse feeding and cutting mechanism can simultaneously complete the transverse feeding and fixed-length cutting of two or more transverse strips.

[0019] b. After the threading mold in the mechanism opens up and down, the transverse belt cutting mechanism will transport the multiple cut transverse belts to the set position along the product transfer direction while keeping the spacing constant and tensioned. The transverse belt automatic copying and transfer mechanism will clamp the multiple transverse strips transferred out by the transverse belt cutting mechanism through the clamping action of the telescopic cylinder. The transverse belt automatic copying and transfer mechanism will move the transverse strip group along the longitudinal direction towards the welding mechanism. At the same time, the transverse belt cutting mechanism will return to its initial position and start the next round of transverse belt conveying and cutting work.

[0020] c. The automatic copying and transfer mechanism of the horizontal strip moves to the set zero point position and begins to move in the same direction and in the same stepping motion as the feeding and shaping fixture, so that the clamping positions at both ends of the horizontal strip gradually enter the jaws of the clamping component; at the same time, the moving frequency of the feeding and shaping fixture is consistent with the subsequent welding frequency. After each welding process is completed, the feeding and shaping fixture moves one station.

[0021] d. Once the set number of transverse strip ends are fully inserted into the clamping position of the feeding and shaping fixture, the clamping cylinder pushes the gripper of the feeding and shaping fixture to complete the clamping action on the transverse strip ends and quickly resets; each time the feeding and shaping fixture and the automatic transverse strip copying and transfer mechanism move, the feeding and shaping fixture completes the clamping of one or more (as needed) transverse strips, and gradually completes the clamping of all strips in the strip group;

[0022] e. After the belt feeding and shaping fixture completes the clamping of all transverse strips in the entire automatic cross-belt copying and transfer mechanism, the automatic cross-belt copying and transfer mechanism releases the clamping of the transverse strips and moves longitudinally to the initial waiting position. At the same time, another set of automatic cross-belt copying and transfer mechanisms connects end to end to ensure the continuous stepping of the welding belt feeding process.

[0023] f. The transverse strip in the feeding and shaping fixture is tightened in the stretching station. After tightening, it enters the welding gun assembly for hot melt welding. After welding, the welded transverse strip is moved out of the welding position and cooled and shaped by the air cooling mechanism.

[0024] g. The transverse strip in the feeding and shaping fixture moves to the discharge position, and the clamping of the transverse strip is released under the action of the discharge release drive.

[0025] h. The welded product, now in a free state, moves step by step under the traction of the stepping rolling traction device and enters the subsequent automatic winding device.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. By alternately conveying the transverse strip group to the welding mechanism through two transverse automatic copying and transfer mechanisms, the time occupied by the strip feeding, cutting and welding processes is eliminated, and the welding process is made efficient (unaffected by the cycle time of any other process).

[0028] 2. The transverse belt feeding and shaping system, which adopts a belt feeding and shaping fixture structure, not only completes the automatic welding of the transverse belt, but also achieves tensioning, shaping and shaping of the product throughout the entire process from product welding to the complete cooling of all welding points, which greatly reduces and avoids product deformation caused by welding.

[0029] 3. The development and use of the automatic copying and transfer mechanism, and the automatic seamless docking between the transverse belt feeding and cutting mechanism and the belt feeding and shaping fixture, ensure the continuity and efficiency of the entire production process.

[0030] 4. The forward-facing stepping traction device, consisting of traction rollers covered with a wear-resistant rubber layer of moderate hardness, ensures the protection of the product and welding points during the traction process. While completing the stepping traction of the product, it not only ensures the precise stepping traction of the product, but also avoids damage to the product welding points during the traction process (the high coefficient of friction of the rubber layer generates reliable frictional traction force, and the moderate hardness of the rubber provides inclusive protection for the product and welding points). Attached Figure Description

[0031] Figure 1 This is a top view of the present invention;

[0032] Figure 2 For the present invention Figure 1 Sectional view of the FF plane;

[0033] Figure 3 For the present invention Figure 2 Sectional view of the GG plane;

[0034] Figure 4 For the present invention Figure 1 Sectional view of the AA section before clamping by the shaping fixture for the central conveyor belt;

[0035] Figure 5 For the present invention Figure 1 Sectional view of the AA section after the central conveyor belt is clamped by the shaping fixture;

[0036] Figure 6 For the present invention Figure 1 Sectional view of the middle BB surface;

[0037] Figure 7 For the present invention Figure 1 Sectional view of the C-plane;

[0038] Figure 8 For the present invention Figure 1 Sectional view of the DD plane;

[0039] Figure 9 For the present invention Figure 1 Sectional view of the EE plane;

[0040] As shown in the figure:

[0041] 1. Horizontal strip, 2. Longitudinal strip, 3. Belt feeding and shaping fixture, 31. Fixed support plate, 32. Fixture seat, 33. Clamping claw, 34. Support plate, 35. Traveling wheel, 36. Clamping cylinder, 37. Release wheel, 4. Welding gun assembly, 41. Welding gun mounting frame, 42. Welding cylinder, 43. Hot melt welding gun, 44. Support platform, 5. Air cooling mechanism, 51. Air box, 52. Air outlet, 53. Reflector, 54. Side guard, 6. Stepping rolling traction device, 61. Upper drive roller, 62. Lower drive roller, 7. Horizontal strip automatic copying and transfer mechanism, 71. Fixed frame, 72. Moving seat, 73. Screw pair, 74. Moving motor, 75. Telescopic cylinder, 76. Clamping plate, 8. Horizontal belt feeding and cutting mechanism. Detailed Implementation

[0042] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0043] like Figures 1-9 As shown, a continuous feeding geogrid welding system of the present invention includes a welding mechanism and two transverse automatic copying and transfer mechanisms 7 located at the feeding end of the welding mechanism.

[0044] It also includes a transverse feeding and cutting mechanism 8, which can enable the transverse strip 1 to move along its own length direction and cut at a set length position. The structure of the transverse feeding and cutting mechanism 8 is not specifically limited, as long as it can cut multiple transverse strips to a fixed length laterally, tighten them and transport them to the transverse automatic copying and transfer mechanism 7 for cutting.

[0045] The transverse feeding and cutting mechanism 8 simultaneously completes the transverse feeding and fixed-length cutting of two or more transverse strips at one time, and the center distance between adjacent transverse strips 1 is uniform, stable and consistent. After the fixed-length cutting, the transverse strips 1 are transversely tightened and kept in a taut state.

[0046] The automatic copying and transfer mechanism 7 for the transverse strip includes a single-sided transfer mechanism located at both ends of the transverse strip 1. The two single-sided transfer mechanisms clamp the two ends of the transverse strip 1 respectively, thereby realizing the tensioning and longitudinal movement of the transverse strip 1. Here, the longitudinal movement direction refers to the longitudinal movement direction of the geogrid.

[0047] like Figure 2 , 3As shown, the single-sided transfer mechanism includes a fixed frame 71, two movable seats 72 slidably connected to the fixed frame 71, and a transfer drive that drives the two movable seats 72 to reciprocate along the geogrid conveying direction. The two movable seats 72 are located at the upper and lower positions of the transverse strip 1, respectively, and are slidably connected by a slide rail and a slider. The two movable seats 72 are driven by the transfer drive.

[0048] The transfer drive includes a moving motor 74, which is mounted on a fixed frame 71. The moving motor 74 drives the moving seat 72 to reciprocate along the geogrid conveying direction via a lead screw pair 73.

[0049] A telescopic cylinder 75 is fixedly connected to the movable seat 72. Two telescopic cylinders 75 are arranged symmetrically in the single-sided transfer mechanism. A clamping plate 76 is fixedly connected to the telescopic shaft of the telescopic cylinder 75. The two clamping plates 76 of the single-sided transfer mechanism move in opposite directions to achieve clamping of the transverse strips. The two clamping plates 76 in the single-sided transfer mechanism clamp 2 to 6 transverse strips 1 at the same time, so that the clamping and movement of 2 to 6 transverse strips 1 can be achieved at the same time.

[0050] The single-sided transfer mechanisms of the two horizontal belt automatic copying and transfer mechanisms 7 are staggered to the left and right, so that the two horizontal belt automatic copying and transfer mechanisms 7 can feed materials alternately without interference.

[0051] The welding mechanism includes a strip feeding and shaping fixture 3, a welding torch assembly 4, and an air cooling mechanism 5. The strip feeding and shaping fixture 3 includes two single-sided rotary clamping mechanisms on the left and right sides, which respectively clamp the two ends of the transverse strip 1.

[0052] The single-sided rotary clamping mechanism includes a fixed support plate 31, a plurality of clamp seats 32 slidably connected to the fixed support plate 31 along a ring, and a ring drive mechanism for driving the plurality of clamp seats 32 to move. In this embodiment, the clamp seats 32 are connected to the edge of the fixed support plate 31 by walking wheels 35. The fixed support plate 31 is a long strip horizontal plate with a vertical track on its outer edge, so that the clamp seats 32 can move in a ring on the track on the edge of the fixed support plate 31. In this embodiment, the ring drive mechanism includes a chain connecting the clamp seats 32, a sprocket and a motor driving the chain. The motor in the ring drive mechanism drives the sprocket to rotate, thereby driving the chain to move. The clamp seats 32 are all connected to the chain, thereby realizing the synchronous movement of all clamp seats 32.

[0053] The clamping base 32 is equipped with a clamping assembly for clamping the end of the transverse strip 1. The clamping assembly includes a jaw 33 hinged to the clamping base 32. The jaw 33 is elongated and its lower part is hinged to the clamping base 32, allowing the jaw 33 to swing left and right. The lower end of the jaw 33 is provided with a clamping surface, which is an anti-slip surface. The clamping base 32 is provided with a support plate 34 located below the jaw 33. An anti-slip pad is fixed to the support plate 34. The anti-slip pad has a certain elasticity, which allows the jaw 33 to overcome the elasticity and fit the clamping surface and the anti-slip pad together. The transverse strip 1 is clamped between the clamping surface and the anti-slip pad. When clamped, the anti-slip surface at the lower end of the jaw 33 approaches the upper end surface of the anti-slip pad, and the transverse strip is clamped therein. The jaw 33 can maintain the clamped state.

[0054] The single-sided rotary clamping mechanism is equipped with a feeding clamping drive at one end near the material feeding direction, which drives the upper end of the clamping jaw 33 to swing downward so that the clamping jaw 33 clamps the transverse strip 1. The feeding clamping drive includes a clamping cylinder 36 that is fixedly installed. The telescopic shaft of the clamping cylinder 36 is located above the clamping jaw 33. The clamping cylinder 36 presses the corresponding clamping jaw 33 downward, thereby realizing the clamping of the transverse strip.

[0055] The rotary clamping mechanism is equipped with a drive jaw 33 at the end near the discharge direction. The upper end of the drive jaw 33 swings upward to release the discharge drive of the transverse strip 1. Figure 1 , 8 As shown, the upper end of the gripper 33 is inclined upward. The discharge release drive includes a release wheel 37 shafted to the fixed support plate 31. The release wheel 37 is tangent to the annular movement trajectory of the gripper 33. The release wheel 37 is located below the upper end of the gripper 33. When the gripper 33 approaches the release wheel 37 tangentially, the inclined surface below the gripper 33 fits against the release wheel 37. As the gripper 33 continues to approach the release wheel 37 tangentially, the size of the release wheel 37 inserted into the gripper 33 gradually increases, thereby lifting the gripper 33 upward. Each gripper 3 that passes the release wheel 37 is lifted in sequence.

[0056] The feeding and shaping fixture 3 is provided with a stretching station and a shaping station along the moving direction of the geogrid. In the stretching station, the spacing between the clamping components at both ends of the transverse strip 1 gradually increases, thereby tightening the transverse strip. The welding gun assembly 4 and the air cooling mechanism 5 are both located in the shaping station.

[0057] The welding torch assembly 4 includes a welding torch mounting frame 41 and multiple welding cylinders 42 mounted side by side on the welding torch mounting frame 41. A hot melt welding torch 43 is mounted on the telescopic shaft at the lower end of the welding cylinder 42. Each hot melt welding torch corresponds to each longitudinal strip 2 on the transverse strip, thereby welding the connection node between the transverse strip 1 and the longitudinal strip 2.

[0058] Below the hot melt welding gun 43 is a support platform 44 located below the transverse strip 1, which is used to support the connection node for welding. During welding, the feeding and shaping fixture 3 is clamped to keep the two ends of the transverse strip clamped.

[0059] The air-cooling mechanism 5 includes a bellows 51 located above the transverse strip 1 and a reflector 53 located below the transverse strip 1. The bellows 51 extends along the length of the transverse strip 1, and an air outlet 52 is opened at the lower end of the bellows 51, thereby forcibly cooling the transverse strip 1 below.

[0060] The reflector 53 extends along the length of the transverse strip 1, and there are baffles extending upward on both sides of the reflector 53, so that the cross-section of the reflector 53 is U-shaped.

[0061] The air box 51 is connected to the air supply device, which provides cold air to the air box 51. The air supply device includes a fan and a heat exchange box. The air passes through the gap of the heat exchange pipe group in the internal heat exchange box through which circulating cooling water is passed, and after being cooled, it enters the fan. After being compressed by the fan, it forms cooled air, which is then sent into the air box 51.

[0062] The welding mechanism also includes a stepping rolling traction device 6 for driving the geogrid to move in a stepping manner. The stepping rolling traction device 6 includes an upper drive roller 61, a lower drive roller 62, and a drive roller motor that drives the upper drive roller 61 and the lower drive roller 62 to rotate in opposite directions. Both the upper drive roller 61 and the lower drive roller 62 are rubber-coated rollers, which ensures sufficient friction required for traction, thereby realizing the clamping and conveying of the geogrid.

[0063] A method for using a continuously feeding geogrid welding system includes the following steps:

[0064] a. According to the production cycle requirements, the transverse feeding and cutting mechanism 8 simultaneously completes the transverse feeding and fixed-length cutting of two or more transverse strips at one time, and the center distance between adjacent transverse strips 1 is uniform, stable and consistent. After the fixed-length cutting, the transverse strip 1 is transversely tightened and kept in a taut state.

[0065] b. After the transverse feeding and cutting mechanism 8 opens the threading mold in the mechanism, it transports the cut transverse strips to the set position along the product transfer direction while maintaining the same spacing and being taut. The transverse automatic copying and transfer mechanism 7 clamps the multiple transverse strips 1 turned out by the transverse feeding and cutting mechanism 8 through the clamping action of the telescopic cylinder. The transverse automatic copying and transfer mechanism 7 moves the transverse strip 1 group along the longitudinal direction towards the welding mechanism. Throughout the entire process, the transverse strips 1 are always taut, and the spacing between each transverse strip 1 remains uniform and consistent.

[0066] c. The automatic cross-belt copying and transfer mechanism 7 moves to the set zero point position and begins to move in the same direction and in the same stepping motion as the feeding and shaping fixture 3, so that the clamping positions at both ends of the clamped cross-belt 1 gradually enter the jaws of the clamping assembly. Throughout the process, the automatic cross-belt copying and transfer mechanism 7 maintains the clamping of the cross-belt 1, and the center distance between adjacent fixture seats 32 is completely consistent with the center distance between adjacent cross-belt 1. At the same time, the moving frequency of the feeding and shaping fixture 3 is consistent with the subsequent welding frequency. After each welding process is completed, the feeding and shaping fixture 3 moves one station.

[0067] d. The transverse strip 1 is fully inserted into the clamping position of the feeding and shaping fixture 3. The clamping cylinder 36 pushes the gripper 33 of the feeding and shaping fixture 3 to complete the clamping action on the end of the transverse strip and quickly reset. Each time the feeding and shaping fixture 3 and the automatic transverse strip copying and transfer mechanism 7 move, the feeding and shaping fixture 3 completes the clamping of one or more (as needed) transverse strips and gradually completes the clamping of all strips in the strip group. Throughout the clamping process, the automatic transverse strip copying and transfer machine 7 maintains the clamping of the transverse strip 1.

[0068] e. After the belt feeding and shaping fixture 3 completes the clamping of all the transverse strips 1 in the entire transverse automatic copying and transfer mechanism 7, the transverse automatic copying and transfer mechanism 7 releases the clamping of the transverse strips 1 and moves longitudinally to the initial waiting position. At the same time, another set of transverse automatic copying and transfer mechanisms 7 connects end to end to ensure the continuous stepping of the welding belt feeding process.

[0069] f. The transverse strip 1 in the feeding and shaping fixture 3 is tightened in the stretching station. After tightening, it enters the welding gun assembly for hot melt welding. After welding is completed, while the welding gun assembly is opened, the feeding and shaping fixture moves normally to move the welded transverse strip 1 out of the welding position and cools and shapes it through the air cooling mechanism.

[0070] g. The transverse strip 1 in the feeding and shaping fixture 3 moves to the discharge position. Under the action of the discharge release drive, the clamping of the transverse strip 1 is released. The geogrid is in a free state at this position. The shaping process after product welding has been completed. The overall temperature of the product is no higher than the ambient temperature, and the welding deformation of the product has been completely eliminated.

[0071] h. The welded product, now in a free state, moves step by step under the traction of the stepping rolling traction device and enters the subsequent automatic winding device.

[0072] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A continuous feeding geogrid welding system, characterized in that: The system includes a welding mechanism and two automatic copying and transfer mechanisms (7) located at the feed end of the welding mechanism. The automatic copying and transfer mechanism (7) includes a single-sided transfer mechanism located at both ends of the transverse strip (1). The single-sided transfer mechanism includes a fixed frame (71), two movable seats (72) slidably connected to the fixed frame (71), and a transfer drive that drives the two movable seats (72) to move back and forth along the geogrid conveying direction. A telescopic cylinder (75) is fixedly connected to the movable seat (72), and a clamping plate (76) is fixedly connected to the telescopic shaft of the telescopic cylinder (75). The two clamping plates (76) of the single-sided transfer mechanism move up and down in opposite directions. The single-sided transfer mechanisms in the two automatic copying and transfer mechanisms (7) are staggered left and right. The welding mechanism includes a tape feeding and shaping fixture (3), a welding gun assembly (4), and an air cooling mechanism (5). The tape feeding and shaping fixture (3) includes two single-sided rotary clamping mechanisms on the left and right. The single-sided rotary clamping mechanism includes a fixed support plate (31), multiple clamp seats (32) that are slidably connected to the fixed support plate (31) along the ring, and a ring drive mechanism that drives the multiple clamp seats (32) to move. The clamp seats (32) are equipped with clamping components that clamp the ends of the transverse strip (1). The tape feeding and shaping fixture (3) is provided with a stretching station and a shaping station along the moving direction of the geogrid. The spacing between the clamping components at both ends of the transverse strip (1) in the stretching station gradually increases. The welding gun assembly (4) and the air cooling mechanism (5) are both located in the shaping station.

2. The continuous feeding geogrid welding system according to claim 1, characterized in that: The transfer drive includes a moving motor (74), which drives the moving seat (72) to reciprocate along the geogrid conveying direction via a lead screw pair (73).

3. The continuous feeding geogrid welding system according to claim 1, characterized in that: In the single-sided transfer mechanism, two clamping plates (76) simultaneously clamp two or more transverse strips (1).

4. A continuous feeding geogrid welding system according to any one of claims 1-3, characterized in that: The clamping assembly includes a jaw (33) hinged to a clamping seat (32). The lower end of the jaw (33) is provided with a clamping surface, which is an anti-slip surface. The clamping seat (32) is provided with a support plate (34) located below the jaw (33). An anti-slip pad is fixed on the support plate (34). The transverse strip (1) is clamped between the clamping surface and the anti-slip pad. The end of the single-sided rotary clamping mechanism near the material feeding direction is equipped with a feeding clamping drive that drives the upper end of the jaw (33) to swing downward so that the jaw (33) clamps the transverse strip (1). The end of the rotary clamping mechanism near the material discharging direction is equipped with a discharging release drive that drives the upper end of the jaw (33) to swing upward so that the jaw (33) releases the transverse strip (1).

5. The continuous feeding geogrid welding system according to claim 4, characterized in that: The feeding clamping drive includes a fixed clamping cylinder (36), the telescopic shaft of which is located above the gripper (33).

6. The continuous feeding geogrid welding system according to claim 4, characterized in that: The upper end of the gripper (33) is inclined upward, and the discharge release drive includes a release wheel (37) that is shaft-connected to the fixed support plate (31). The release wheel (37) is located below the upper end of the gripper (33).

7. A continuous feeding geogrid welding system according to claim 4, characterized in that: The welding gun assembly (4) includes a welding gun mounting frame (41) and multiple welding cylinders (42) mounted side by side on the welding gun mounting frame (41). A hot melt welding gun (43) is mounted on the telescopic shaft at the lower end of the welding cylinder (42). A support platform (44) located below the horizontal strip (1) is provided below the hot melt welding gun (43).

8. A continuous feeding geogrid welding system according to claim 4, characterized in that: The air-cooling mechanism (5) includes a bellows (51) located above the transverse strip (1) and a reflector (53) located below the transverse strip (1). The lower end of the bellows (51) has an air outlet (52).

9. A method of using the continuous feeding geogrid welding system as described in claim 5, characterized in that, Includes the following steps: a. According to the production cycle requirements, the transverse feeding and cutting mechanism can simultaneously complete the transverse feeding and fixed-length cutting of two or more transverse strips. b. After the threading mold in the mechanism opens up and down, the transverse belt cutting mechanism will transport the multiple cut transverse belts to the set position along the product transfer direction while keeping the spacing constant and tensioned. The transverse belt automatic copying and transfer mechanism will clamp the multiple transverse strips transferred out by the transverse belt cutting mechanism through the clamping action of the telescopic cylinder. The transverse belt automatic copying and transfer mechanism will move the transverse strip group along the longitudinal direction towards the welding mechanism. At the same time, the transverse belt cutting mechanism will return to its initial position and start the next round of transverse belt conveying and cutting work. c. The automatic copying and transfer mechanism of the horizontal strip moves to the set zero point position and begins to move in the same direction and in the same stepping motion as the feeding and shaping fixture, so that the clamping positions at both ends of the horizontal strip gradually enter the jaws of the clamping component; at the same time, the moving frequency of the feeding and shaping fixture is consistent with the subsequent welding frequency. After each welding process is completed, the feeding and shaping fixture moves one station. d. When one or more transverse strips are fully inserted into the clamping position of the feeding and shaping fixture, the clamping cylinder pushes the jaws of the feeding and shaping fixture to complete the clamping action on the end of the transverse strip and quickly resets; each time the feeding and shaping fixture and the automatic copying and transfer mechanism of the transverse strip move, the feeding and shaping fixture completes one clamping of the transverse strip and gradually completes the clamping of all strips in the strip group. e. After the belt feeding and shaping fixture completes the clamping of all transverse strips in the entire automatic cross-belt copying and transfer mechanism, the automatic cross-belt copying and transfer mechanism releases the clamping of the transverse strips and moves longitudinally to the initial waiting position. At the same time, another set of automatic cross-belt copying and transfer mechanisms connects end to end to ensure the continuous stepping of the welding belt feeding process. f. The transverse strip in the feeding and shaping fixture is tightened in the stretching station. After tightening, it enters the welding gun assembly for hot melt welding. After welding, the welded transverse strip is moved out of the welding position and cooled and shaped by the air cooling mechanism. g. The transverse strip in the feeding and shaping fixture moves to the discharge position, and the clamping of the transverse strip is released under the action of the discharge release drive. h. The welded product, now in a free state, moves step by step under the traction of the stepping rolling traction device and enters the subsequent automatic winding device.

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