A welding aid for geomembrane welding and method of use

Abstract

The application belongs to the technical field of building construction, and particularly relates to a welding auxiliary device for geomembrane welding and a use method thereof, which comprises two geomembrane bodies that are overlapped up and down at one end and a concave support frame for winding the geomembrane bodies, the upper and lower inner surfaces of the concave support frame are fixedly connected with support rods that are symmetrically distributed in a diagonal manner, one side surface of the support rod is provided with a winding and unwinding mechanism, one side surface of the upper end of the concave support frame is fixedly connected with an extension plate, the lower surface of the extension plate is provided with a pressing and ironing mechanism, and the pressing and ironing mechanism is provided with a clamping mechanism inside. The welding auxiliary device for geomembrane welding and the use method thereof can realize the cleaning and air drying of the bonding part of the geomembrane body by the following steps: the cleaning brush works while the suction fan in the adsorption cavity moves to suck the impurities, the impurities are adsorbed to the adsorption cavity through the adsorption hole, and the adsorbed impurities are discharged from the through hole of the adsorption cavity through the action of the exhaust fan.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a welding auxiliary device and its usage method for geomembrane welding. Background Technology

[0002] Geomembrane is a geosynthetic material made of plastic film as the impermeable base material and non-woven fabric. Warp-knitted composite reinforced waterproof geotextile has excellent water-proofing, durability, and protective properties. It can be widely used in railways, highways, sports stadiums, dams, hydraulic structures, tunnels, coastal mudflats, reclamation, environmental protection and other projects.

[0003] The commonly used method for geomembrane welding is hot-melt welding. The geomembrane is rolled down the slope from the top of the dam in one go by hand. Then, the edges of the geomembrane are overlapped and the seams are cleaned. Then, a climbing welding machine is used to advance and hot-melt weld along the seams. However, during the movement of the climbing welding machine, workers need to hold a traction rope to track the machine in real time to monitor its movement and clean the geomembrane seams. As a result, the climbing welding machine may stay at a certain seam for too long, causing the geomembrane to over-melt and eventually break. In addition, the surface of the laid geomembrane is prone to the accumulation of impurities and water stains, which affects the operation of the climbing welding machine, increases the construction difficulty, and wastes manpower and resources. Therefore, the present invention solves the above-mentioned technical problems. Summary of the Invention

[0004] Based on the aforementioned technical problems, this invention proposes a welding auxiliary device and a method for using geomembrane welding.

[0005] This invention proposes a welding auxiliary device for geomembrane welding, comprising two geomembrane bodies overlapping at one end and a concave support frame for winding the geomembrane bodies. Support rods are fixedly connected to the upper and lower inner surfaces of the concave support frame in a diagonally symmetrical manner. A winding and unwinding mechanism is provided on one side surface of the support rods. An extension plate is fixedly connected to one side surface of the upper end of the concave support frame. A pressing mechanism is provided on the lower surface of the extension plate. A clamping mechanism is provided inside the pressing mechanism. A cooling roller for clamping is provided on the front side of the pressing mechanism. The surface of the cooling roller is in sliding contact with the surface of the geomembrane body.

[0006] The unwinding mechanism rotates inside the concave support frame to unwind the geomembrane body to be laid, and cleans the surface of the geomembrane body during the unwinding process.

[0007] The pressing mechanism rolls and presses the overlapping parts of the geomembrane body to bond the overlapping parts together.

[0008] The clamping mechanism clamps and transports one side of the geomembrane body.

[0009] Preferably, the winding and unwinding mechanism includes a mounting side plate fixedly connected to the upper surface of the support rod, and a winding and unwinding roller is rotatably connected to the rear end surface of the mounting side plate via a bearing, and the geomembrane body is wound around the outer surface of the winding and unwinding roller.

[0010] Through the above technical solution, the geomembrane body is laid by a pulling robot. In order to facilitate the arrangement of the geomembrane body, a take-up and release roller is set to wind the geomembrane body. When the pulling robot pulls and lays the geomembrane along the track, the take-up and release roller can rotate to release the membrane.

[0011] Preferably, the winding and unwinding mechanism further includes a mounting ear plate fixedly connected to one side surface of the middle end of the mounting side plate, and a cleaning roller rotatably connected to one side surface of the mounting ear plate via a bearing in a symmetrical distribution. The outer surface of the cleaning roller is fixedly connected with dense electrostatic bristles in a ring array, and the surface of the electrostatic bristles slides in contact with the upper and lower surfaces of the geomembrane body.

[0012] Through the above technical solution, in order to clean the outer surface of the geomembrane body and avoid the surface-adhered impurities from affecting the heat-pressing effect of the overlapping parts of the geomembrane body, the upper and lower installation side plates are equipped with cleaning rollers in an obliquely symmetrical distribution through the installation ear plates, so that the two sets of cleaning rollers can simultaneously clean the surface of the geomembrane body on both sides online, and the electrostatic brush of electrostatic material can clean and adsorb impurities.

[0013] Preferably, the winding and unwinding mechanism further includes an adsorption cavity that extends through one side of the cleaning roller and is formed inside the cleaning roller. The inner wall of the adsorption cavity is provided with adsorption holes arranged in a ring array. An exhaust fan is fixedly connected to the inner wall of the adsorption cavity in a ring array. An exhaust fan is fixedly connected to one side of the inner wall of the adsorption cavity.

[0014] Through the above technical solution, in order to treat the impurities cleaned by the electrostatic brush and prevent them from falling repeatedly onto the surface of the geomembrane, the exhaust fan in the adsorption chamber is activated while the brush is cleaning to suck up the impurities and adsorb them into the adsorption chamber through the adsorption holes. Then, the exhaust fan is activated to discharge the adsorbed impurities from the through-hole of the adsorption chamber, thus achieving the cleaning and drying of the bonding parts of the geomembrane.

[0015] Preferably, the winding and unwinding mechanism further includes a tension roller rotatably connected to the front end surface of the mounting side plate via a bearing, the surface of the tension roller being in sliding contact with the outer surface of the geomembrane body.

[0016] Through the above technical solution, in order to tension the cleaned geomembrane body for easy clamping, a tensioning roller is set at the front end of the cleaning roller. Since the mounting side plates are distributed obliquely, the two symmetrical tensioning rollers are also distributed obliquely, thereby achieving tensioning of the geomembrane body.

[0017] Preferably, the pressing mechanism includes a pressing base plate fixedly disposed on one side of the concave support frame, a hydraulic press fixedly mounted on the upper surface of the extension plate, the upper surface of the other pressing base plate being fixedly connected to the piston rod surface of the hydraulic press, and hot wedges being fixedly connected to the opposite side surfaces of the two pressing base plates, the surfaces of the hot wedges being in sliding contact with the surface of the geomembrane body.

[0018] Through the above technical solution, in order to press and overlap the overlapping parts of the geomembrane body, the geomembrane body passes through two upper and lower pressing plates, and the hydraulic press on the extension plate is activated, causing its piston rod to push the upper pressing plate downward, thereby achieving the clamping of the geomembrane body by the two pressing plates. This allows two hot wedges to contact one side surface of the two geomembrane bodies respectively. The pressing plates are equipped with a hot air gun. The hot wedge is a tool that uses high temperature to heat and cut materials. It usually consists of a blade with a heating element. It can quickly heat and melt the geomembrane body by heating. The working principle of the hot wedge is to heat the blade and use the high temperature of the blade to quickly press and heat it onto the surface of the geomembrane body. The blade can be made of metal, ceramic or other high temperature resistant materials. The heating element is usually heated by a hot air gun, and then the heat is transferred to the blade to achieve the heat melting of the geomembrane body, thus facilitating the pressing and bonding together.

[0019] Preferably, the pressing mechanism further includes rotating cavities symmetrically distributed on the surface of the pressing base plate. The inner sidewall of the rotating cavity is rotatably connected to a double pressure roller via a rotating rod. The outer surface of the double pressure roller slides in contact with the surface of the geomembrane body. Both sides of the rotating cavity are provided with driving cavities opened inside the pressing base plate. Both ends of the front and rear rotating rods are provided with sprocket assemblies, which consist of a sprocket and a transmission chain.

[0020] Through the above technical solution, in order to press and fix the hot-melt part of the geomembrane body and realize the clamping of the geomembrane body, the motor-driven sprocket assembly installed inside the pressing base plate is activated, which drives the front and rear two rotating parts to rotate, thereby driving the front and rear double pressure rollers to roll and press the hot-melt part of the geomembrane body and push the geomembrane body forward, which is convenient for the pulling robot to pull and lay. Moreover, the upper surface of the pressing base plate is wider and smoother on one side, which facilitates the support of the geomembrane body on both sides, and thus facilitates its forward movement under tension.

[0021] Preferably, the clamping mechanism includes a sliding groove formed on the upper surface of the heat press base plate, a clamping cavity is formed on one inner wall of the sliding groove, and a guide slide is fixedly connected to the inner wall of the upper and lower ends of the communication port between the sliding groove and the clamping cavity.

[0022] Through the above technical solution, in order to clamp one side of the geomembrane body and prevent it from folding and turning over, the overlapping part of the geomembrane body is uneven. Thus, one side of the geomembrane body is inserted into the clamping cavity along the sliding groove and guided by the smooth surface of the guide slide plate, so that the geomembrane body can be transported forward when that side is clamped.

[0023] Preferably, the clamping mechanism further includes pulleys arranged in a rectangular array via U-shaped plates and installed on the upper end of the inner wall of one side of the sliding slot. An upper conveyor belt is installed on the inner side wall of the clamping cavity via a connecting rod. Push cylinders are symmetrically fixedly connected to the inner top wall of the clamping cavity. A mounting concave plate is fixedly connected to the upper surface of the piston rod of the push cylinder. A lower conveyor belt is installed on the inner surface of the mounting concave plate via a connecting rod. The surface of the conveyor belt slides in contact with the outer surface of the geomembrane body.

[0024] Through the above technical solution, in order to limit and clamp the geomembrane body inserted into the clamping cavity to prevent it from flipping over, the geomembrane body is clamped by the upper and lower conveyor belts. As the pulling robot pulls, the geomembrane body can drive the two conveyor belts to rotate during its forward movement, thereby realizing the clamping action. In order to adapt to the thickness of the geomembrane body, the jacking cylinder is used to adjust the height of the lower conveyor belt and adjust the gap between the two conveyor belts, thereby clamping the geomembrane body.

[0025] The present invention discloses a method for using a welding auxiliary device for geomembrane welding, comprising the following steps:

[0026] S1. The two geomembrane bodies are respectively obliquely symmetrically distributed and wound on the outer surface of the take-up and release rollers. The geomembrane bodies are laid by the pulling robot. During the pulling process, the two geomembrane bodies pass through their respective cleaning rollers and are pulled forward. After being tensioned by the tensioning rollers, they are laid on their respective pressing base plates.

[0027] S2. When the geomembrane body is laid on the hot plate, the overlapping side is inserted into the clamping cavity along the sliding groove, and is clamped by the upper and lower conveyor belts by the smooth surface of the guide plate.

[0028] S3. The lower conveyor belt moves through the jacking cylinder, which pushes the piston rod upward to install the concave plate to adapt to the thickness of the geomembrane body. As the pulling robot pulls, the pulley on the sliding slot rotates on the lower surface of the geomembrane body to reduce the resistance of its being pulled forward.

[0029] S4. When the geomembrane body is pulled forward, the cleaning roller clamps its upper and lower surfaces, so that the electrostatic brush of the electrostatic material sweeps and adsorbs the impurities. While the brush is cleaning, the exhaust fan in the adsorption chamber is activated to suck up the impurities and adsorb them into the adsorption chamber through the adsorption holes. Then, the exhaust fan is activated to discharge the adsorbed impurities from the through-hole of the adsorption chamber.

[0030] S5. After cleaning and air-drying the bonding area of ​​the geomembrane body, the hydraulic press on the extension plate is activated, causing its piston rod to push the upper pressing plate downward, thereby achieving the clamping of the geomembrane body by the two pressing plates, so that the two hot wedges contact one side surface of the two geomembrane bodies respectively. The pressing plate is equipped with a hot air gun, which transfers heat to the surface of the hot wedges after it is working, thus heat-melting the geomembrane body.

[0031] S6. The motor-driven sprocket assembly installed inside the pressing base plate drives the front and rear two rotating parts to rotate, which in turn drives the front and rear double pressure rollers to roll and press the hot-melt part of the geomembrane body. The bonded geomembrane body is then cooled and shaped by the clamping of the cooling rollers, and then the pulling robot pulls and lays it.

[0032] The beneficial effects of this invention are as follows:

[0033] 1. By setting up a winding and unwinding mechanism, impurities and water stains on the upper and lower surfaces of the geomembrane can be cleaned during unwinding. During the adjustment process, electrostatic brushes made of electrostatic material clean and adsorb impurities. While cleaning the brush bristles, the exhaust fan in the adsorption chamber is activated to suck up the impurities and adsorb them into the adsorption chamber through the adsorption holes. Then, the exhaust fan is activated to discharge the adsorbed impurities from the through-hole of the adsorption chamber. This achieves cleaning and drying of the bonding parts of the geomembrane, which facilitates non-stop hot-melt welding of the joints and improves the efficiency of geomembrane welding.

[0034] 2. By setting up a pressing mechanism, the geomembrane body can be pressed at the joint during the unrolling and laying process. During adjustment, the hydraulic press is activated, causing its piston rod to push the upper pressing plate downwards, thereby clamping the geomembrane body between the two pressing plates. This allows the two hot wedges to contact one side surface of the two geomembrane bodies respectively. The pressing plate is equipped with a hot air gun, which transfers heat to the surface of the hot wedges to heat-melt the geomembrane body. The motor-driven sprocket assembly installed inside the pressing plate drives the front and rear rollers to rotate, which in turn drives the two sets of double pressure rollers to roll and press the heat-melted parts of the geomembrane body and push it forward, thereby reducing the geomembrane welding process and improving its welding efficiency.

[0035] 3. By setting up a clamping mechanism, the joint side of the geomembrane body can be clamped and limited. During the adjustment process, the jacking cylinder is activated, causing its piston rod to push the mounting plate upward, so that the lower and upper conveyor belts clamp the surface of the geomembrane body joint. As the geomembrane body is pulled, the two conveyor belts rotate, which can prevent the edge of the geomembrane body joint from warping and affecting the welding of the hot wedge. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a welding auxiliary device and its usage method for geomembrane welding proposed in this invention;

[0037] Figure 2 This is a perspective view of a concave support frame structure for a welding auxiliary device and method of using geomembrane welding proposed in this invention.

[0038] Figure 3 This is a perspective view of the installation side plate structure of a welding auxiliary device and its usage method for geomembrane welding proposed in this invention.

[0039] Figure 4 This is a perspective view of the take-up and release roller structure of a welding auxiliary device and method for welding geomembranes proposed in this invention.

[0040] Figure 5 This is a perspective view of a cleaning roller structure for a welding auxiliary device and method of using geomembrane welding proposed in this invention.

[0041] Figure 6 This is a perspective view of an exhaust fan structure for a welding auxiliary device and method of using geomembrane welding proposed in this invention.

[0042] Figure 7 This is a three-dimensional view of a hydraulic press structure for a welding auxiliary device and method of using geomembrane welding proposed in this invention.

[0043] Figure 8 This is a perspective view of a double-pressure roller structure for a welding auxiliary device and its usage method for geomembrane welding proposed in this invention.

[0044] Figure 9 This is a perspective view of the rotating cavity structure of a welding auxiliary device and its usage method for geomembrane welding proposed in this invention.

[0045] Figure 10 This is a perspective view of the upper conveyor belt structure of a welding auxiliary device and its usage method for geomembrane welding proposed in this invention.

[0046] Figure 11 This is a perspective view of the lower conveyor belt structure of a welding auxiliary device and its usage method for geomembrane welding proposed in this invention.

[0047] Figure 12 This is a perspective view of the sprocket assembly structure of a welding auxiliary device and its usage method for geomembrane welding proposed in this invention.

[0048] In the diagram: 1. Geomembrane body; 2. Concave support frame; 21. Support rod; 22. Extension plate; 23. Cooling roller; 3. Winding mechanism; 31. Mounting side plate; 32. Winding roller; 33. Mounting ear plate; 34. Cleaning roller; 35. Electrostatic brush; 36. Adsorption chamber; 37. Adsorption hole; 38. Exhaust fan; 39. Vent fan; 391. Tensioning roller; 4. Pressing mechanism; 41. Pressing base plate; 42. Hydraulic press; 43. Hot wedge; 44. Rotating chamber; 45. Double pressure roller; 46. Drive chamber; 47. Sprocket assembly; 5. Clamping mechanism; 51. Sliding slot; 52. Clamping chamber; 53. Guide slide plate; 54. Pulley; 55. Upper conveyor belt; 56. Push cylinder; 57. Mounting concave plate; 58. Lower conveyor belt. Detailed Implementation

[0049] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0050] Reference Figures 1-12A welding auxiliary device for geomembrane welding includes two geomembrane bodies 1 that overlap at one end and a concave support frame 2 for winding up the geomembrane bodies 1. Support rods 21 are fixedly connected to the upper and lower inner surfaces of the concave support frame 2 in a diagonally symmetrical manner. A winding and unwinding mechanism 3 is provided on one side surface of the support rods 21. An extension plate 22 is fixedly connected to one side surface of the upper end of the concave support frame 2. A pressing mechanism 4 is provided on the lower surface of the extension plate 22. A clamping mechanism 5 is provided inside the pressing mechanism 4. A cooling roller 23 is provided on the front side of the pressing mechanism 4 for clamping. The surface of the cooling roller 23 slides in contact with the surface of the geomembrane body 1.

[0051] like Figures 2-6 As shown, the unwinding mechanism 3 rotates inside the concave support frame 2 to unwind the geomembrane body 1 to be laid, and cleans the surface of the geomembrane body 1 during the unwinding process.

[0052] The geomembrane body 1 is laid by a pulling robot. In order to facilitate the arrangement of the geomembrane body 1, the winding and unwinding mechanism 3 includes an installation side plate 31 fixedly connected to the upper surface of the support rod 21. The rear end surface of the installation side plate 31 is rotatably connected to the winding and unwinding roller 32 through a bearing. The geomembrane body 1 is wound on the outer surface of the winding and unwinding roller 32. When the pulling robot pulls and lays the geomembrane along the track, the winding and unwinding roller 32 can be rotated to release the geomembrane.

[0053] In order to clean the outer surface of the geomembrane body 1 and prevent impurities adhering to the surface from affecting the pressing effect of the overlapping parts of the geomembrane body 1, the winding and unwinding mechanism 3 also includes a mounting ear plate 33 fixedly connected to one side surface of the middle end of the mounting side plate 31. A cleaning roller 34 is symmetrically distributed and rotatably connected to one side surface of the mounting ear plate 33 via bearings. The outer surface of the cleaning roller 34 is fixedly connected with dense electrostatic bristles 35 in a ring array. The surface of the electrostatic bristles 35 slides in contact with the upper and lower surfaces of the geomembrane body 1, so that the two sets of cleaning rollers 34 simultaneously clean the surface of the geomembrane body 1 on both sides, and the electrostatic brush of the electrostatic material cleans and adsorbs the impurities.

[0054] To treat the impurities cleaned by the electrostatic brush 35 and prevent them from repeatedly falling onto the surface of the geomembrane body 1, the winding and unwinding mechanism 3 also includes an adsorption cavity 36 that penetrates one side of the cleaning roller 34. The inner wall of the adsorption cavity 36 has adsorption holes 37 arranged in a ring array. An exhaust fan 38 is fixedly connected to the annular inner wall of the adsorption cavity 36 in a ring array. An exhaust fan 39 is fixedly connected to one side of the inner wall of the adsorption cavity 36. Thus, while the brush is cleaning, the exhaust fan 38 in the adsorption cavity 36 is activated to draw in the impurities and adsorb them through the adsorption holes 37 into the adsorption cavity 36. Then, the exhaust fan 39 is activated to discharge the adsorbed impurities from the through-hole of the adsorption cavity 36, thereby achieving the cleaning and drying of the bonding area of ​​the geomembrane body 1.

[0055] In order to tension the cleaned geomembrane body 1 for easy clamping, the winding and unwinding mechanism 3 also includes a tensioning roller 391 that is rotatably connected to the front surface of the mounting side plate 31 via a bearing. The surface of the tensioning roller 391 slides in contact with the outer surface of the geomembrane body 1. Since the mounting side plate 31 is obliquely distributed, the two symmetrical tensioning rollers 391 are also obliquely distributed, thereby achieving tensioning of the geomembrane body 1.

[0056] By setting up the winding and unwinding mechanism 3, the impurities and water stains on the upper and lower surfaces of the geomembrane body 1 can be cleaned during unwinding. During the adjustment process, the impurities are swept and adsorbed by the electrostatic brush made of electrostatic material. While cleaning the brush bristles, the exhaust fan 38 in the adsorption chamber 36 is activated to suck up the impurities and adsorb them into the adsorption chamber 36 through the adsorption hole 37. Then, the exhaust fan 39 is activated to discharge the adsorbed impurities from the through-hole of the adsorption chamber 36. Thus, the bonding parts of the geomembrane body 1 are cleaned and dried, which facilitates the non-stop hot-melt welding of the joints and improves the efficiency of geomembrane welding.

[0057] like Figures 7-9 As shown, the pressing mechanism 4 rolls and presses the overlapping parts of the geomembrane body 1 to bond the overlapping parts.

[0058] To press and overlap the overlapping parts of the geomembrane body 1, the pressing mechanism 4 includes a pressing base plate 41 fixedly mounted on one side of the concave support frame 2. A hydraulic press 42 is fixedly mounted on the upper surface of the extension plate 22. The upper surface of the other pressing base plate 41 is fixedly connected to the piston rod surface of the hydraulic press 42. Hot wedges 43 are fixedly connected to opposite sides of the two pressing base plates 41. The surfaces of the hot wedges 43 slide in contact with the surface of the geomembrane body 1, thereby actuating the hydraulic press 42 on the extension plate 22, causing its piston rod to push the upper pressing base plate 41 downward, thus clamping the geomembrane body 1 between the two pressing base plates 41. Two hot wedges 43 are respectively brought into contact with one side surface of the two geomembrane bodies 1. A hot air gun is installed inside the pressing base plate 41. The hot wedge 43 is a tool that uses high temperature to heat and cut materials. It usually consists of a blade with a heating element. It can quickly heat and melt the geomembrane body 1 by heating. The working principle of the hot wedge 43 is to heat the blade and use the high temperature of the blade to quickly heat and melt it onto the surface of the geomembrane body 1. The blade can be made of metal, ceramic or other high temperature resistant materials. The heating element is usually heated by a hot air gun and then the heat is transferred to the blade to achieve heat melting of the geomembrane body 1, which facilitates heat pressing and bonding together.

[0059] To press and fix the hot-melt portion of the geomembrane body 1 and to clamp the geomembrane body 1, the pressing mechanism 4 also includes rotating cavities 44 symmetrically distributed on the surface of the pressing base plate 41. The inner wall of the rotating cavity 44 is rotatably connected to double pressure rollers 45 via rotating rods. The outer surfaces of the double pressure rollers 45 slide in contact with the surface of the geomembrane body 1. Both sides of the rotating cavity 44 are provided with driving cavities 46 inside the pressing base plate 41. Both ends of the front and rear rotating rods are provided with sprocket assemblies 47. 47 consists of a sprocket and a transmission chain. The motor installed inside the pressing base plate 41 drives the sprocket assembly 47 to rotate, which in turn drives the two sets of double pressure rollers 45 to rotate. This causes the rollers to roll and press the hot-melt part of the geomembrane body 1 and push the geomembrane body 1 forward, making it easier for the pulling robot to pull and lay it. The upper surface of the pressing base plate 41 is wider and smoother on one side, which makes it easier for the geomembrane body 1 on both sides to be supported by force, and thus easier for it to be pulled forward.

[0060] By setting up the pressing mechanism 4, the geomembrane body 1 can be pressed at the joint during the unrolling and laying process. During the adjustment process, the hydraulic press 42 is activated, causing its piston rod to push the upper pressing base plate 41 downward, thereby clamping the geomembrane body 1 with the two pressing base plates 41. This allows the two hot wedges 43 to contact one side surface of the two geomembrane bodies 1 respectively. The pressing base plate 41 is equipped with a hot air gun, which transfers heat to the surface of the hot wedges 43 after operation, thus heat-melting the geomembrane body 1. The motor drive sprocket assembly 47 installed inside the pressing base plate 41 is activated, causing it to drive the two front and rear rotating parts to rotate, which in turn drives the two sets of double pressure rollers 45 to rotate, rolling and pressing the heat-melting part of the geomembrane body 1 and pushing it forward. This reduces the geomembrane welding process and improves its welding efficiency.

[0061] like Figures 10-12 As shown, the clamping mechanism 5 clamps and transports one side of the geomembrane body 1.

[0062] In order to clamp one side of the geomembrane body 1 and prevent it from folding and flipping, so that the overlapping part of the geomembrane body 1 is uneven, the clamping mechanism 5 includes a sliding groove 51 formed on the upper surface of the pressing base plate 41. A clamping cavity 52 is formed on one side inner wall of the sliding groove 51. A guide slide plate 53 is fixedly connected to the inner side wall of the upper and lower ends of the communication port between the sliding groove 51 and the clamping cavity 52. ​​One side of the geomembrane body 1 is inserted into the clamping cavity 52 along the sliding groove 51 and guided by the smooth surface of the guide slide plate 53, so that the geomembrane body 1 can be transported forward when that side is clamped.

[0063] To limit and clamp the geomembrane body 1 inserted into the clamping cavity 52 and prevent it from flipping over, the clamping mechanism 5 also includes pulleys 54 arranged in a rectangular array via U-shaped plates and installed on the upper end of the inner wall of one side of the sliding slot 51. An upper conveyor belt 55 is installed on the inner side wall of the clamping cavity 52 via a connecting rod. To accommodate the thickness of the geomembrane body 1, push cylinders 56 are symmetrically fixedly connected to the inner top wall of the clamping cavity 52. ​​A mounting concave plate 57 is fixedly connected to the upper surface of the piston rod of the push cylinder 56. A lower conveyor belt 58 is installed on the inner surface of the mounting concave plate 57 via a connecting rod. The surface of the lower conveyor belt 58 slides in contact with the outer surface of the geomembrane body 1. By actuating the push cylinder 56, the height of the lower conveyor belt 58 is adjusted, thereby adjusting the gap between the two conveyor belts, which can clamp the geomembrane body 1. As the pulling robot pulls, the geomembrane body 1 can drive the two conveyor belts to rotate during its forward movement, thus achieving the clamping action.

[0064] like Figures 1-12 As shown, a method for using a welding auxiliary device for geomembrane welding includes the following steps:

[0065] S1. Two geomembrane bodies 1 are respectively obliquely symmetrically distributed and wound on the outer surface of the take-up and release rollers 32. The geomembrane bodies 1 are laid by the pulling robot. During the pulling process, the two geomembrane bodies 1 pass through their respective cleaning rollers 34 and are pulled forward. After being tensioned by the tensioning rollers 391, they are laid on their respective pressing base plates 41.

[0066] S2. When the geomembrane body 1 is laid on the pressing base plate 41, the overlapping side is inserted into the clamping cavity 52 along the sliding groove 51, and is guided by the smooth surface of the guide slide plate 53 and clamped by the upper conveyor belt 55 and the lower conveyor belt 58.

[0067] S3. The lower conveyor belt 58 is operated by the top-pushing cylinder 56, which pushes the piston rod upward to install the concave plate 57 to adapt to the thickness of the geomembrane body 1. As the pulling robot pulls, the pulley 54 on the sliding groove 51 rotates on the lower surface of the geomembrane body 1 to reduce the resistance of being pulled forward.

[0068] S4. When the geomembrane body 1 is pulled forward, the cleaning roller 34 clamps its upper and lower surfaces, so that the electrostatic brush of the electrostatic material sweeps and adsorbs the impurities. While the brush is cleaning, the exhaust fan 38 in the adsorption chamber 36 is activated to suck up the impurities and adsorb them into the adsorption chamber 36 through the adsorption hole 37. Then, the exhaust fan 39 is activated to discharge the adsorbed impurities from the through-hole of the adsorption chamber 36.

[0069] S5. After cleaning and air-drying the bonding area of ​​the geomembrane body 1, the hydraulic press 42 on the extension plate 22 is activated, causing its piston rod to push the upper pressing plate 41 downward, thereby achieving the clamping of the geomembrane body 1 by the two pressing plates 41, so that the two hot wedges 43 contact one side surface of the two geomembrane bodies 1 respectively. The pressing plate 41 is equipped with a hot air gun, which transfers heat to the surface of the hot wedges 43 after it is working, thus heat-melting the geomembrane body 1.

[0070] S6. The motor-driven sprocket assembly 47 installed inside the pressing base plate 41 is activated to drive the front and rear two rotating parts to rotate, thereby driving the front and rear double pressure rollers 45 to rotate, so as to roll and press the hot-melt part of the geomembrane body 1. The geomembrane body 1 after bonding is cooled and shaped by the clamping of the cooling roller 23, and then the pulling robot pulls and lays it.

[0071] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding auxiliary device for geomembrane welding, comprising two geomembrane bodies (1) overlapping at one end and a concave support frame (2) for winding the geomembrane bodies (1), characterized in that: The upper and lower inner surfaces of the concave support frame (2) are symmetrically and obliquely connected with support rods (21). A winding and unwinding mechanism (3) is provided on one side surface of the support rod (21). An extension plate (22) is fixedly connected to one side surface of the upper end of the concave support frame (2). A pressing mechanism (4) is provided on the lower surface of the extension plate (22). A clamping mechanism (5) is provided inside the pressing mechanism (4). A cooling roller (23) for clamping is provided on the front side of the pressing mechanism (4). The surface of the cooling roller (23) slides in contact with the surface of the geomembrane body (1). The winding and unwinding mechanism (3) rotates inside the concave support frame (2) to unwind the geomembrane body (1) to be laid, and cleans the surface of the geomembrane body (1) during the unwinding process. The pressing mechanism (4) rolls and presses the overlapping parts of the geomembrane body (1) to bond the overlapping parts. The pressing mechanism (4) includes a pressing base plate (41) fixedly installed on one side of the concave support frame (2), a hydraulic press (42) fixedly installed on the upper surface of the extension plate (22), and the upper surface of the other pressing base plate (41) fixedly connected to the piston rod surface of the hydraulic press (42). A hot wedge (43) is fixedly connected to the opposite side surface of the two pressing base plates (41), and the surface of the hot wedge (43) slides in contact with the surface of the geomembrane body (1). The pressing mechanism (4) further includes rotating cavities (44) symmetrically distributed on the surface of the pressing base plate (41). The inner sidewall of the rotating cavity (44) is rotatably connected to a double pressure roller (45) via a rotating rod. The outer surface of the double pressure roller (45) slides in contact with the surface of the geomembrane body (1). Both sides of the rotating cavity (44) are provided with driving cavities (46) opened inside the pressing base plate (41). Both ends of the front and rear rotating rods are provided with sprocket assemblies (47). The sprocket assembly (47) consists of a sprocket and a transmission chain. The clamping mechanism (5) clamps and transports one side of the geomembrane body (1).

2. The welding auxiliary device for geomembrane welding according to claim 1, characterized in that: The winding and unwinding mechanism (3) includes an installation side plate (31) fixedly connected to the upper surface of the support rod (21). The rear end surface of the installation side plate (31) is rotatably connected to a winding and unwinding roller (32) via a bearing. The geomembrane body (1) is wound around the outer surface of the winding and unwinding roller (32).

3. The welding auxiliary device for geomembrane welding according to claim 2, characterized in that: The winding and unwinding mechanism (3) also includes a mounting ear plate (33) fixedly connected to one side surface of the middle end of the mounting side plate (31). A cleaning roller (34) is rotatably connected to one side surface of the mounting ear plate (33) through a bearing. Dense electrostatic bristles (35) are fixedly connected to the outer surface of the cleaning roller (34) in a ring array. The surface of the electrostatic bristles (35) slides in contact with the upper and lower surfaces of the geomembrane body (1).

4. The welding auxiliary device for geomembrane welding according to claim 3, characterized in that: The winding and unwinding mechanism (3) further includes an adsorption cavity (36) that penetrates one side of the cleaning roller (34) and is opened inside. The inner wall of the adsorption cavity (36) is provided with adsorption holes (37) arranged in a ring array. An exhaust fan (38) is fixedly connected to the inner wall of the adsorption cavity (36) in a ring array. An exhaust fan (39) is fixedly connected to one side of the inner wall of the adsorption cavity (36).

5. The welding auxiliary device for geomembrane welding according to claim 4, characterized in that: The winding and unwinding mechanism (3) also includes a tension roller (391) that is rotatably connected to the front end surface of the mounting side plate (31) via a bearing, and the surface of the tension roller (391) is in sliding contact with the outer surface of the geomembrane body (1).

6. A welding auxiliary device for geomembrane welding according to claim 5, characterized in that: The clamping mechanism (5) includes a sliding groove (51) formed on the upper surface of the heat pressing base plate (41). A clamping cavity (52) is formed on one side inner wall of the sliding groove (51). A guide slide plate (53) is fixedly connected to the inner side wall of the upper and lower ends of the communication port between the sliding groove (51) and the clamping cavity (52).

7. A welding auxiliary device for geomembrane welding according to claim 6, characterized in that: The clamping mechanism (5) also includes pulleys (54) arranged in a rectangular array by U-shaped plates and installed on the upper end of the inner wall of one side of the sliding slot (51). The inner side wall of the clamping cavity (52) is equipped with an upper conveyor belt (55) through a connecting rod. The inner top wall of the clamping cavity (52) is symmetrically and fixedly connected with push cylinders (56). The upper surface of the piston rod of the push cylinder (56) is fixedly connected with a mounting concave plate (57). The inner surface of the mounting concave plate (57) is equipped with a lower conveyor belt (58) through a connecting rod. The surface of the lower conveyor belt (58) slides in contact with the outer surface of the geomembrane body (1).

8. A method of using the welding auxiliary device for geomembrane welding according to claim 7, comprising the following steps: S1. The two geomembrane bodies (1) are respectively obliquely symmetrically distributed and wound on the outer surface of the take-up roller (32). The geomembrane bodies (1) are laid by the pulling robot. During the pulling process, the two geomembrane bodies (1) pass through their respective cleaning rollers (34) and are pulled forward. After being tensioned by the tensioning roller (391), they are laid on their respective pressing base plates (41). S2. When the geomembrane body (1) is laid on the pressing base plate (41), the overlapping side is inserted into the clamping cavity (52) along the sliding groove (51), and is clamped by the upper conveyor belt (55) and the lower conveyor belt (58) by the smooth surface of the guide slide plate (53). S3. The lower conveyor belt (58) moves by pushing the cylinder (56) to push the piston rod upward to install the concave plate (57) to adapt to the thickness of the geomembrane body (1). As the pulling robot pulls, the pulley (54) on the sliding slot (51) rotates on the lower surface of the geomembrane body (1) to reduce the resistance of being pulled forward. S4. When the geomembrane body (1) is pulled forward, the cleaning roller (34) clamps its upper and lower surfaces, so that the electrostatic brush of the electrostatic material cleans and adsorbs the impurities. While the brush is cleaning, the exhaust fan (38) in the adsorption cavity (36) is activated to draw in the impurities and adsorb them into the adsorption cavity (36) through the adsorption hole (37). Then, the exhaust fan (39) is activated to discharge the adsorbed impurities from the through-hole of the adsorption cavity (36). S5. After cleaning and air-drying the bonding area of ​​the geomembrane body (1), the hydraulic press (42) on the extension plate (22) is activated, causing its piston rod to push the upper pressing plate (41) downward, thereby achieving the clamping of the geomembrane body (1) by the two pressing plates (41), so that the two hot wedges (43) contact one side surface of the two geomembrane bodies (1) respectively. The pressing plate (41) is equipped with a hot air gun, which transfers heat to the surface of the hot wedges (43) after working to heat melt the geomembrane body (1). S6. The motor drive sprocket assembly (47) installed inside the pressing base plate (41) is activated to drive the front and rear two rotating parts to rotate and drive the front and rear double pressure rollers (45) to rotate, so that they roll and press the hot-melt part of the geomembrane body (1). The geomembrane body (1) after bonding is cooled and shaped by the clamping of the cooling roller (23), and then the pulling robot pulls and lays it.

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