Automatic bonding device for large-diameter plastic-lined pipe production

Abstract

The present application relates to plastic-lined pipe production technical field, especially large-diameter plastic-lined pipe production is with automatic bonding device.The present application provides a kind of plastic-lined pipe that can be self-adaptive different pipe diameter, ensure the large-diameter plastic-lined pipe production is with automatic bonding device of plastic-lined pipe bonding quality and production efficiency.A kind of large-diameter plastic-lined pipe production is with automatic bonding device, including base and side plate etc., base left and right two parts upper side are connected with side plate.The metal pipe passes through heat conduction ring and water jet ring, contact roller is contacted with the outer wall of metal pipe, high-temperature rubber ring, plastic rubber block is extruded deformation by pipe outer wall, self-adaptive fill the gap between heat conduction ring and pipe material, so that alumina fiber insulation cotton and the outer wall of metal pipe of different pipe diameter always keep the same size gap, reaches the effect that can be self-adaptive different pipe diameter of plastic-lined pipe, ensure the plastic-lined pipe bonding quality and production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic-lined pipe production, and particularly relates to an automatic bonding device for large-diameter plastic-lined pipe production. BACKGROUND

[0002] The large-diameter plastic-lined pipe is widely used in municipal water supply and drainage, chemical medium transportation, power circulating water and other fields due to its high strength of metal pipe material and corrosion resistance of plastic pipe material. With the expansion of demand in the industrial and infrastructure fields, the large-diameter plastic-lined pipe is increasingly required to be produced in large scale and multiple specifications. Automatic bonding, as a core process of large-diameter plastic-lined pipe production, directly determines the bonding strength, dimensional accuracy and production efficiency of the pipe material.

[0003] The plastic pipe material of the large-diameter plastic-lined pipe is the mainstream material in the industry, which specifically includes the following three types: polyethylene (PE) pipe material, high-density polyethylene (HDPE, such as PE100) is selected, the heating temperature for bonding with metal pipes (such as steel pipes) is 180-220 DEG C, at this temperature, HDPE can be softened and closely combined with the inner wall of the metal pipe, while avoiding excessive melting to cause pipe deformation; polypropylene (PP) pipe material, homopolymer polypropylene (PP-H) or copolymer polypropylene (PP-B) is selected, the heating bonding temperature is 200-240 DEG C, which can ensure that the PP pipe material is fully softened and forms a stable bond with the adhesive (such as modified PP adhesive) on the surface of the metal pipe; hard polyvinyl chloride (PVC-U) pipe material, PVC-U pipe material meeting the GB / T13663.2-2018 standard is selected, the heating bonding temperature is 160-190 DEG C, which can soften the PVC-U pipe material without decomposition, ensuring the bonding strength and pipe performance.

[0004] The existing plastic-lined pipe bonding usually passes the sleeved metal pipe and plastic pipe through the through hole on the temperature control module, and then moves the temperature control module along the metal pipe to heat the metal pipe and plastic pipe to realize the bonding of the metal pipe and plastic pipe. However, since the size of the through hole on the temperature control module is fixed, when bonding smaller plastic-lined pipes, the gap between the temperature control module and the outer wall of the pipe is too large, and the heat is difficult to completely act on the pipe, which has the problems of low heating efficiency, large heat loss, uneven temperature, high energy consumption and the like, and is difficult to adapt to plastic-lined pipes of different specifications and diameters.

[0005] Therefore, the present application develops an automatic bonding device for large-diameter plastic-lined pipe production, which can adapt to plastic-lined pipes of different diameters and ensure the bonding quality and production efficiency of the plastic-lined pipes. SUMMARY

[0006] In order to overcome the existing plastic-lined pipe bonding device, the size of the through hole on the temperature control module is fixed, when the smaller size plastic-lined pipe needs to be bonded, the gap between the temperature control module and the outer wall of the pipe is too large, the heat is difficult to completely act on the pipe, there are problems of low heating efficiency, large heat loss, uneven temperature, high energy consumption and the like, the present application provides a kind of plastic-lined pipe that can be self-adaptive to different pipe diameters, ensures the bonding quality and production efficiency of large-diameter plastic-lined pipe production automatic bonding device.

[0007] The technical scheme of the present application is: a large-diameter plastic-lined pipe production automatic bonding device, comprising a base, a side plate, a top plate, a speed reducer, a lead screw, a guide rail, a lifting door, an electric sliding rail, a drainage assembly, a bidirectional drive assembly, a positioning mechanism, a positioning inflation mechanism, a bonding mechanism and a heat preservation mechanism, the left and right sides of the base are connected with the side plates, the top plate is connected between the upper sides of the side plates, the right side of the side plate is connected with the speed reducer, the output shaft of the speed reducer is connected with the lead screw, the lead screw is rotatably connected with the left side of the side plate, the front and rear sides of the top plate are connected with the guide rails, the side plates are connected with the electric sliding rails on the side close to each other, the sliding blocks of the two adjacent electric sliding rails are connected with the lifting door, the side plate is provided with a drainage assembly for conveniently discharging wastewater, the bidirectional drive assembly is provided on the drainage assembly to convey the plastic-lined pipe, the positioning mechanism is provided on the drainage assembly to position the plastic-lined pipe, the positioning inflation mechanism is provided on the top plate to inflate the plastic-lined pipe, the bonding mechanism is provided between the lead screw and the guide rail to bond the metal pipe and the plastic pipe, and the heat preservation mechanism is provided on the bonding mechanism to reduce heat loss.

[0008] In one embodiment, the drainage assembly includes a drainage frame and a drainage plate, the drainage frame is connected between the lower parts of the side plates, the left side of the drainage frame is provided with a water outlet pipe, and the upper side of the drainage frame is connected with the drainage plate.

[0009] In one embodiment, the bottom of the drainage frame is inclined to the left.

[0010] In one of the embodiments, the bidirectional driving assembly comprises a mounting frame, a servo motor, rotating rollers and a belt conveyor, the mounting frame is connected to the rear side of the drainage frame, the servo motor is connected to the upper side of the left part of the mounting frame, a plurality of groups of rotating rollers are rotatably connected to the upper side of the middle part of the drainage frame, each group is composed of two rotating rollers adjacent to each other, the output shaft of the servo motor is connected to the leftmost rotating roller through a commutator, the two rotating rollers of the same group are connected by a belt through a transmission wheel, the rear side of each rotating roller is rotatably connected to the mounting frame, a plurality of belt conveyors are arranged on the upper side of the middle part of the drainage frame, the belt conveyors are located between the adjacent rotating rollers, the belt conveyor is started to convey the metal pipe to the designated position, the servo motor is started to rotate the rotating rollers to adjust the position of the metal pipe for subsequent work.

[0011] In one of the embodiments, the positioning mechanism comprises a first air cylinder, a V-shaped positioning plate and an infrared sensor, a plurality of first air cylinders are connected to the middle part of the drainage frame, a V-shaped positioning plate is connected to the extension end of each first air cylinder, and an infrared sensor is connected to the middle part of each V-shaped positioning plate, after the infrared sensor detects that the metal pipe reaches the designated position, the first air cylinder is started to push the V-shaped positioning plate to move upward and lift the metal pipe upward.

[0012] In one of the embodiments, the positioning and inflating mechanism comprises an air pump, a main air pipe, a branch air pipe, a second air cylinder, an air rod, a guide frame, a guide rod, a blowing cylinder, a pressurized air nozzle, a gas blocking cone and a high-temperature-resistant rubber cone, two air pumps are connected to the upper side of the middle part of the top plate, a main air pipe is connected to the side away from each air pump, a plurality of branch air pipes are connected to the lower side of the main air pipe, the branch air pipes are connected to the top plate, a plurality of second air cylinders are connected to the side away from each other of the side plates, an air rod is connected to the extension end of each second air cylinder, a plurality of guide frames are connected to the side close to each other of the side plates, the air rods are slidably connected to the adjacent guide frames, a guide rod is slidably connected to the lower part of each guide frame, a blowing cylinder is connected to the side close to each other of the air rods, the branch air pipes are connected to the adjacent blowing cylinders, a pressurized air nozzle is connected to the side close to each other of the blowing cylinders, a gas blocking cone is connected to the blowing cylinder, the guide rod is connected to the adjacent gas blocking cone, a high-temperature-resistant rubber cone is connected to the gas blocking cone, and the high-temperature-resistant rubber cone is connected to the adjacent blowing cylinder, one of the air pumps is started to supply gas to the blowing cylinder on one side through the main air pipe and the branch air pipe, so that the blowing cylinder blows out the impurities in the plastic pipe, the pressurized air nozzle pressurizes the gas, the second air cylinder is started to push the air rods close to each other, so that the high-temperature-resistant rubber cone on the gas blocking cone contacts the two ends of the plastic pipe to block the two ends of the plastic pipe and clamp the plastic pipe.

[0013] In one of the embodiments, the bonding mechanism comprises a moving block, a mounting frame, a water pipe joint, an inlet pipe, a water spraying ring, a nozzle, a temperature control module and a heat conducting ring, the moving block is threadedly connected with the lead screw, the mounting frame is slidingly connected between the guide rails, the moving block is connected with the mounting frame, the water pipe joint is connected with the upper side of the mounting frame, a plurality of inlet pipes are connected with the lower sides of the left and right parts of the mounting frame, the inlet pipes are communicated with the water pipe joint, a plurality of water spraying rings are connected with the lower sides of the left and right parts of the mounting frame, the water spraying rings are connected with the adjacent inlet pipes, a plurality of nozzles are connected inside the water spraying rings, the temperature control module is connected with the lower side of the middle part of the mounting frame, a plurality of heat conducting rings are connected with the temperature control module, the speed reducer motor is started to drive the lead screw to rotate, so that the moving block and the mounting frame move along the guide rails, the metal pipe passes through the heat conducting ring and the water spraying ring respectively, when the metal pipe is clamped between the high-temperature-resistant rubber cones, the temperature control module moves along the metal pipe to heat the metal pipe and the plastic pipe, and the metal pipe and the plastic pipe are bonded, while moving the bonded part, the water pipe joint is connected with the water conveying pipeline, water is conveyed into the water spraying ring through the water pipe joint and the inlet pipe, the nozzles spray water, and the metal pipe is cooled.

[0014] In one of the embodiments, the speed reducer motor, the electric sliding rail, the servo motor, the belt conveyor, the first air cylinder, the infrared sensor, the air pump, the second air cylinder, the temperature control module and the processor are electrically connected through the control module.

[0015] In one of the embodiments, the heat preservation mechanism comprises a high-temperature-resistant rubber ring, a shaped rubber block, an alumina fiber insulation cotton and a contact roller, a plurality of high-temperature-resistant rubber rings are connected with the left and right sides of the temperature control module, a plurality of shaped rubber blocks are connected with the high-temperature-resistant rubber ring, the alumina fiber insulation cotton is connected inside the high-temperature-resistant rubber ring, and a plurality of contact rollers are rotatably connected with the alumina fiber insulation cotton in the middle part, after the metal pipe passes through the heat conducting ring and the water spraying ring, the contact roller is in contact with the outer wall of the metal pipe, the high-temperature-resistant rubber ring, the shaped rubber block and the alumina fiber insulation cotton are deformed by being extruded by the outer wall of the pipe material, and the gap between the heat conducting ring and the pipe material is adaptively filled, so that the alumina fiber insulation cotton and the outer wall of the metal pipe with different diameters always maintain the same gap.

[0016] In one of the embodiments, the shaped rubber block is V-shaped.

[0017] Beneficial effects: 1. After the metal pipe passes through the heat conducting ring and the water spraying ring, the contact roller is in contact with the outer wall of the metal pipe, the high-temperature-resistant rubber ring, the shaped rubber block and the alumina fiber insulation cotton are deformed by being extruded by the outer wall of the pipe material, and the gap between the heat conducting ring and the pipe material is adaptively filled, so that the alumina fiber insulation cotton and the outer wall of the metal pipe with different diameters always maintain the same gap, which can adapt to plastic-lined pipes with different diameters and ensure the bonding quality and production efficiency of the plastic-lined pipe.

[0018] 2、The present application transports the metal pipe to the upper of the V-shaped positioning plate through the belt conveyor, the infrared sensor detects that the metal pipe reaches the specified position, and the processor starts the first cylinder through the control module, pushes the V-shaped positioning plate to move upwards, and lifts the metal pipe upwards, so that the pipe can be positioned.

[0019] 3、The present application pushes the air rod to approach each other through the starting of the second cylinder, so that the high-temperature-resistant rubber cone on the air block cone contacts the two ends of the plastic pipe, blocks the two ends of the plastic pipe, and clamps the plastic pipe, so that the pipe can be fixed.

[0020] 4、The present application moves the temperature control module along the metal pipe, heats the metal pipe and the plastic pipe, and bonds the metal pipe and the plastic pipe, moves the bonded while spraying the water ring, connects the water pipe joint to the water pipe, supplies water to the water ring through the water pipe joint and the water inlet pipe, sprays the water through the nozzle, and cools the metal pipe, so that the metal pipe and the plastic pipe can be bonded and cooled at the same time.

[0021] 5、When the metal pipe and the plastic pipe are heated and bonded, the air pump is started to inflate the air cylinder into the plastic pipe, so that the plastic pipe is heated and softened to fit the inner wall of the metal pipe, so that the bonding effect of the metal pipe and the plastic pipe can be ensured.

[0022] 6、The water cooled by the plastic-lined pipe falls on the hydrophobic plate, the hydrophobic plate is used for dispersing and falling water on the drainage frame, and then the water flows into the water outlet pipe along the drainage frame and is discharged, so that the effect of avoiding water flowing to the surrounding and polluting the working environment can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0024] Figure 2 It is a schematic diagram of part of the three-dimensional structure of the present application.

[0025] Figure 3 It is a first schematic diagram of the three-dimensional structure of the bidirectional driving assembly of the present application.

[0026] Figure 4 It is a second schematic diagram of the three-dimensional structure of the bidirectional driving assembly of the present application.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the positioning mechanism of the present application.

[0028] Figure 6 It is a schematic diagram of the three-dimensional structure of the positioning inflation mechanism of the present application.

[0029] Figure 7The first part of the positioning inflation mechanism of the present application.

[0030] Figure 8 The cross-sectional structure of the positioning inflation mechanism of the present application.

[0031] Figure 9 The second part of the positioning inflation mechanism of the present application.

[0032] Figure 10 The side plate and the top plate of the present application.

[0033] Figure 11 The bonding mechanism of the present application.

[0034] Figure 12 The first part of the bonding mechanism of the present application.

[0035] Figure 13 The second part of the bonding mechanism of the present application.

[0036] Figure 14 The heat preservation mechanism of the present application.

[0037] Figure 15 The cross-sectional structure of the heat preservation mechanism of the present application.

[0038] The figure is marked as: 1 - base, 2 - side plate, 21 - top plate, 211 - speed reducer motor, 212 - screw rod, 213 - guide rail, 3 - lifting door, 301 - electric sliding rail, 4 - drainage assembly, 41 - drainage frame, 42 - drainage plate, 5 - bidirectional drive assembly, 51 - mounting frame, 52 - servo motor, 53 - rotating roller, 54 - belt conveyor, 6 - positioning mechanism, 61 - first air cylinder, 62 - V-shaped positioning plate, 63 - infrared sensor, 7 - positioning inflation mechanism, 71 - air pump, 72 - main air pipe, 73 - branch air pipe, 74 - second air cylinder, 75 - air rod, 751 - guide frame, 752 - guide rod, 76 - air blowing cylinder, 761 - pressurized air nozzle, 77 - air blocking cone, 78 - high-temperature-resistant rubber cone, 8 - bonding mechanism, 81 - moving block, 82 - mounting frame, 83 - water pipe joint, 831 - water inlet pipe, 832 - water spraying ring, 833 - spray head, 84 - temperature control module, 85 - heat-conducting ring, 9 - heat preservation mechanism, 91 - high-temperature-resistant rubber ring, 92 - shaped rubber block, 93 - alumina fiber insulation cotton, 94 - contact roller. DETAILED DESCRIPTION

[0039] The present application will be further described below in conjunction with the embodiments shown in the accompanying drawings.

[0040] An automatic bonding device for large-diameter plastic-lined pipe production, such asFigures 1-15 As shown, including the base 1, side plate 2, top plate 21, reduction motor 211, lead screw 212, guide rail 213, lifting door 3, electric slide rail 301, drainage assembly 4, bidirectional drive assembly 5, positioning mechanism 6, positioning inflation mechanism 7, bonding mechanism 8 and heat preservation mechanism 9, the left and right two parts of the base 1 are connected with the side plate 2, the upper side of the side plate 2 is connected with the top plate 21, the upper right side of the right side plate 2 is connected with the reduction motor 211, the output shaft of the reduction motor 211 is connected with the lead screw 212, the lead screw 212 is rotatably connected with the left side plate 2, the front and rear two parts of the top plate 21 are connected with the guide rail 213, the side plate 2 is connected with the electric slide rail 301 on the side close to each other, the sliding blocks of the left and right adjacent two electric slide rails 301 are connected with the lifting door 3, the side plate 2 is provided with the drainage assembly 4, the drainage assembly 4 is provided with the bidirectional drive assembly 5, the drainage assembly 4 is further provided with the positioning mechanism 6, the top plate 21 is provided with the positioning inflation mechanism 7, the lead screw 212 and the guide rail 213 are provided with the bonding mechanism 8, and the bonding mechanism 8 is provided with the heat preservation mechanism 9.

[0041] As shown in Figures 1-4 The drainage assembly 4 comprises a drainage frame 41 and a drainage plate 42, the lower part of the side plate 2 is connected with the drainage frame 41, the left side of the drainage frame 41 is provided with a water outlet pipe, the upper side of the drainage frame 41 is connected with the drainage plate 42, and the bottom of the drainage frame 41 is inclined to the left, facilitating drainage.

[0042] As shown in Figures 1-4 The bidirectional drive assembly 5 comprises a mounting frame 51, a servo motor 52, rotating rollers 53 and a belt conveyor 54, the mounting frame 51 is connected to the rear side of the drainage frame 41, the servo motor 52 is connected to the upper side of the left part of the mounting frame 51, four groups of rotating rollers 53 are rotatably connected to the upper side of the middle part of the drainage frame 41, each group comprises two rotating rollers 53 adjacent to each other, the output shaft of the servo motor 52 is connected to the leftmost rotating roller 53 through a commutator, the two rotating rollers 53 in the same group are connected by a belt through a transmission wheel, the rear side of the rotating roller 53 is rotatably connected with the mounting frame 51, and four belt conveyors 54 are arranged on the upper side of the middle part of the drainage frame 41 and located between the adjacent two rotating rollers 53.

[0043] As shown in Figure 3 and Figure 5 The positioning mechanism 6 comprises a first air cylinder 61, a V-shaped positioning plate 62 and an infrared sensor 63, nine first air cylinders 61 are connected to the middle part of the drainage frame 41, the first air cylinder 61 is connected with the V-shaped positioning plate 62 at the extension end, and the V-shaped positioning plate 62 is connected with the infrared sensor 63 at the middle part.

[0044] As shown in Figures 6-7As shown, the positioning inflation mechanism 7 comprises air pump 71, total air pipe 72, branch air pipe 73, second air cylinder 74, air rod 75, guide frame 751, guide rod 752, air cylinder 76, pressurized air nozzle 761, air block cone 77 and high-temperature-resistant rubber cone 78, the upper side of the middle part of the top plate 21 is connected with two air pumps 71 away from each other, the side of the air pump 71 away from each other is connected with a total air pipe 72, the lower side of the total air pipe 72 is connected with three branch air pipes 73, the branch air pipe 73 is connected with the top plate 21, the side of the side plate 2 away from each other is connected with three second air cylinders 74, the extension end of the second air cylinder 74 is connected with an air rod 75, the side of the side plate 2 close to each other is connected with three guide frames 751, the air rod 75 is connected with the adjacent guide frame 751 in a sliding manner, the lower part of the guide frame 751 is connected with a guide rod 752 in a sliding manner, the side of the air rod 75 close to each other is connected with an air cylinder 76, the branch air pipe 73 is connected with the adjacent air cylinder 76, the side of the air cylinder 76 close to each other is connected with a pressurized air nozzle 761, the air cylinder 76 is connected with an air block cone 77, the guide rod 752 is connected with the adjacent air block cone 77, the air block cone 77 is connected with a high-temperature-resistant rubber cone 78, the high-temperature-resistant rubber cone 78 is made of methyl vinyl silicone rubber (MVQ, model 110-2), which can withstand -60℃-250℃ for a long time, can stably withstand the heating temperature of 160℃-240℃ for plastic pipe bonding, avoid softening failure when clamping, and the high-temperature-resistant rubber cone 78 is connected with the adjacent air cylinder 76.

[0045] As shown in Figures 10-13 , the bonding mechanism 8 comprises a moving block 81, a mounting frame 82, a water pipe joint 83, an inlet pipe 831, a water spraying ring 832, a nozzle 833, a temperature control module 84 and a heat conducting ring 85, the moving block 81 is connected with the screw rod 212 in a threaded manner, the mounting frame 82 is connected between the guide rails 213 in a sliding manner, the moving block 81 is connected with the mounting frame 82, the mounting frame 82 is connected with the water pipe joint 83 on the upper side, the mounting frame 82 is connected with three inlet pipes 831 on the lower side of the left and right two parts, the inlet pipe 831 is connected with the water pipe joint 83, the mounting frame 82 is connected with three water spraying rings 832 on the lower side of the left and right two parts, the water spraying ring 832 is connected with the adjacent inlet pipe 831, the water spraying ring 832 is connected with twelve nozzles 833 inside, the mounting frame 82 is connected with a temperature control module 84 on the lower side of the middle part, the temperature control module 84 is connected with three heat conducting rings 85, the speed reducer 211, the electric sliding rail 301, the servo motor 52, the belt conveyor 54, the first air cylinder 61, the infrared sensor 63, the air pump 71, the second air cylinder 74, the temperature control module 84 and the processor are electrically connected through the control module.

[0046] As shown in Figure 14 and Figure 15As shown, the heat preservation mechanism 9 includes high-temperature-resistant rubber rings 91, shaped rubber blocks 92, alumina fiber heat preservation cotton 93 and contact rollers 94. The left and right sides of the temperature control module 84 are connected with three high-temperature-resistant rubber rings 91. The high-temperature-resistant rubber rings 91 are made of methyl vinyl silicone rubber (MVQ, model 110-2), which can withstand a temperature of -60℃-250℃ for a long time, can maintain elasticity in a heating environment of 160℃-240℃, stably fills the gap between the heat conduction ring (85) and the pipe material, reduces heat loss, and is connected with eight shaped rubber blocks 92 on the high-temperature-resistant rubber ring 91. The shaped rubber blocks 92 are V-shaped, which is convenient for shaping. The high-temperature-resistant rubber ring 91 is internally connected with alumina fiber heat preservation cotton 93, and the alumina fiber heat preservation cotton 93 is rotatably connected with twelve contact rollers 94 in the middle.

[0047] When the present application is used, first, the base 1 is placed in the plastic-lined pipe production area, and then the electric sliding rail 301 is started to make the lifting door 3 rise upward. Then, the metal pipe with the plastic pipe connected is placed on the belt conveyor 54. The processor starts the belt conveyor 54 through the control module to convey the metal pipe to the designated position. The processor starts the servo motor 52 through the control module to make the rotating roller 53 rotate to left and right convey the metal pipe and adjust the position of the metal pipe for subsequent bonding work.

[0048] The positioning mechanism 6 of the present device can position the pipe. The metal pipe is conveyed one by one to above the V-shaped positioning plate 62 by the belt conveyor 54. After the infrared sensor 63 detects that the metal pipe reaches the designated position, the processor starts the first cylinder 61 through the control module to push the V-shaped positioning plate 62 to move upward, lift the metal pipe upward, and make the metal pipe located between the two adjacent air blowers 76, so as to position the pipe.

[0049] The positioning and inflation mechanism 7 of the present device can tightly position and inflate the pipe. After the metal pipe is located between the two adjacent air blowers 76, one side of the air pump 71 is started to convey air to one side of the air blower 76 through the main air pipe 72 and the branch air pipe 73, so that the air blower 76 blows out the impurities in the plastic pipe. The pressure nozzle 761 pressurizes the gas. The second cylinder 74 is started to push the air rod 75 to move close to each other, so that the high-temperature-resistant rubber cone 78 on the air cone 77 contacts the two ends of the plastic pipe to block the two ends of the plastic pipe and clamp the plastic pipe. Then, the V-shaped positioning plate 62 is moved downward to reset. When the air cone 77 moves, the guide rod 752 moves, and the guide frame 751 guides the guide rod 752.

[0050] The adhesive mechanism 8 of the device can be used to bond metal pipes and plastic pipes. After the metal pipes are located between the two adjacent air blow cylinders 76, the speed reducer motor 211 is started to drive the screw rod 212 to rotate, so that the moving block 81 and the mounting frame 82 move along the guide rail 213, and the metal pipes pass through the heat-conducting ring 85 and the water spray ring 832 respectively. When the metal pipes are clamped between the high-temperature-resistant rubber cones 78, the temperature control module 84 moves along the metal pipes to heat the metal pipes and the plastic pipes, and the metal pipes and the plastic pipes are bonded. While moving, the water spray ring 832 moves to connect the water pipe joint 83 to the water supply pipeline, and water is supplied to the water spray ring 832 through the water pipe joint 83 and the water inlet pipe 831, so that the spray head 833 sprays water to cool the metal pipes. When heating and bonding the metal pipes and the plastic pipes, the air pump 71 is started to inflate the plastic pipes through the air blow cylinder 76, so that the plastic pipes adhere to the inner wall of the metal pipes after being heated and softened, ensuring the bonding effect of the metal pipes and the plastic pipes. During bonding, the metal pipes can be preheated at the initial temperature without cooling, and then the temperature is increased to the melting point temperature of the plastic pipes for bonding and cooling. The inflation pressure is also a gradient inflation amount. After the plastic-lined pipe bonding and cooling are completed, the air pump 71 stops inflating, the second air cylinder 74 drives the air rod 75 to reset, and the V-shaped positioning plate 62 lowers the plastic-lined pipe on the bidirectional driving assembly 5. The lifting door 3 is opened, the bidirectional driving assembly 5 sends out the bonded plastic-lined pipe, and the lifting door 3 is closed to complete a single production cycle.

[0051] The heat preservation mechanism 9 of the device can be used to reduce heat loss during bonding. After the metal pipes pass through the heat-conducting ring 85 and the water spray ring 832, the contact roller 94 contacts the outer wall of the metal pipes, the high-temperature-resistant rubber ring 91, the shaped rubber block 92 and the alumina fiber insulation cotton 93 are deformed by the extrusion of the pipe material outer wall, and the gap between the heat-conducting ring 85 and the pipe material is filled, so that the alumina fiber insulation cotton 93 always maintains the same gap between the outer wall of the metal pipes with different diameters. When the temperature control module 84 is heated, the alumina fiber insulation cotton 93 can reduce heat loss, so as to adapt to plastic-lined pipes with different diameters, ensure the bonding quality and production efficiency of the plastic-lined pipes, and the shaped rubber block 92 is used to assist the recovery of the shape of the high-temperature-resistant rubber ring 91.

[0052] The drainage assembly 4 of the device can collect and discharge wastewater. After the plastic-lined pipes are cooled, the water falls on the drain plate 42, the drain plate 42 is used to disperse the water falling on the drainage frame 41 to avoid splashing, and then the water flows along the drainage frame 41 to the left into the water outlet pipe to be discharged, so as to avoid the water flowing to the surrounding environment to pollute the working environment.

[0053] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An automatic bonding device for large diameter plastic lined pipe production, characterized by: The utility model provides a base (1) is included, and the both sides of base (1) are provided with side plate (2) respectively, and top plate (21) is provided with between two side plate (2), and the speed reducer motor (211) is installed on any side plate (2), and the output shaft of speed reducer motor (211) is connected with lead screw (212), and lead screw (212) is rotatably connected to two side plate (2) on the periphery, and the both sides of top plate (21) are equipped with lift door (3), and the both ends of lift door (3) are slidably connected to side plate (2) respectively, and side plate (2) is equipped with drain assembly (4) of convenient discharge waste water, and drain assembly (4) is equipped with two-way drive assembly (5) of being able to transport plastic lined pipe, and drain assembly (4) is further equipped with positioning mechanism (6) of being able to position plastic lined pipe, and top plate (21) is equipped with positioning inflation mechanism (7) of being able to inflate plastic lined pipe, and the downside of top plate (21) is provided with guide rail (213), and the adhesion mechanism (8) of being able to bond metal pipe and plastic pipe is provided between lead screw (212) and guide rail (213), and the heat preservation mechanism (9) of being able to reduce heat loss is provided on adhesion mechanism (8); The adhesion mechanism (8) includes a moving block (81), a mounting frame (82), a water pipe joint (83), an inlet pipe (831), a water spraying ring (832), a spray head (833), a temperature control module (84), and a heat conducting ring (85). The moving block (81) is threadedly connected to the lead screw (212). The mounting frame (82) is slidably connected between the guide rails (213). The moving block (81) is connected to the mounting frame (82). The water pipe joint (83) is connected to the upper side of the mounting frame (82). A plurality of inlet pipes (831) are connected to the lower sides of the left and right parts of the mounting frame (82). The inlet pipes (831) are in communication with the water pipe joint (83). A plurality of water spraying rings (832) are connected to the lower sides of the left and right parts of the mounting frame (82). The water spraying rings (832) are connected to the adjacent inlet pipes (831). A plurality of spray heads (833) are connected inside the water spraying rings (832). The temperature control module (834) is connected to the lower middle part of the mounting frame (82). A plurality of heat conducting rings (85) are connected to the temperature control module (84). The speed reducer motor (211) is started to drive the lead screw (212) to rotate, so that the moving block (81) and the mounting frame (82) move along the guide rails (213). The metal pipe passes through the heat conducting rings (85) and the water spraying rings (832) respectively. When the metal pipe is clamped between the high-temperature-resistant rubber cones (78), the temperature control module (84) moves along the metal pipe to heat the metal pipe and the plastic pipe, and the metal pipe and the plastic pipe are bonded. While moving, the water spraying rings (832) move, the water pipe joint (83) is connected to the water conveying pipe, water is conveyed into the water spraying rings (832) through the water pipe joint (83) and the inlet pipes (831), and the spray heads (833) spray water to cool the metal pipe. The heat preservation mechanism (9) comprises high-temperature-resistant rubber rings (91), shaped rubber blocks (92), alumina fiber heat preservation cotton (93) and contact rollers (94), a plurality of high-temperature-resistant rubber rings (91) are connected to the left and right sides of the temperature control module (84), a plurality of shaped rubber blocks (92) are connected to the high-temperature-resistant rubber rings (91), the high-temperature-resistant rubber rings (91) are internally connected with the alumina fiber heat preservation cotton (93), a plurality of contact rollers (94) are rotatably connected to the middle of the alumina fiber heat preservation cotton (93), the contact rollers (94) are in contact with the outer wall of the metal pipe after the metal pipe passes through the heat conduction ring (85) and the water spraying ring (832), the high-temperature-resistant rubber rings (91), the shaped rubber blocks (92) and the alumina fiber heat preservation cotton (93) are deformed by being extruded by the outer wall of the pipe material, and the gaps between the heat conduction ring (85) and the pipe material are filled in a self-adaptive manner, so that the alumina fiber heat preservation cotton (93) and the outer wall of the metal pipe with different pipe diameters always maintain the same size gap.

2. The automatic bonding device for producing a large-diameter plastic-lined pipe according to claim 1, characterized in that: The drainage assembly (4) comprises a drainage frame (41) and a drainage plate (42), the drainage frame (41) is connected between the lower parts of the side plates (2), the left side of the drainage frame (41) is provided with a water outlet pipe, and the upper side of the drainage frame (41) is connected with the drainage plate (42), the water cooled after the plastic pipe is cooled falls on the drainage plate (42), the drainage plate (42) is used for dispersing and falling the water on the drainage frame (41), and then the water flows along the drainage frame (41) to the left and is discharged into the water outlet pipe.

3. The automatic bonding apparatus for producing a large-diameter plastic-lined pipe according to claim 2, characterized by: The bottom of the drainage frame (41) is inclined to the left.

4. The automatic bonding apparatus for producing a large-diameter plastic-lined pipe according to claim 2, characterized by: The bidirectional driving assembly (5) comprises a mounting frame (51), a servo motor (52), rotating rollers (53) and belt conveyors (54), the rear side of the drainage frame (41) is connected with the mounting frame (51), the left upper side of the mounting frame (51) is connected with the servo motor (52), a plurality of groups of rotating rollers (53) are rotatably connected to the upper middle of the drainage frame (41), each group is composed of two rotating rollers (53) adjacent to each other on the left and right, the output shaft of the servo motor (52) is connected with the leftmost rotating roller (53) through a commutator, the two rotating rollers (53) in the same group are connected with a belt through a transmission wheel, the rear side of the rotating roller (53) is rotatably connected with the mounting frame (51), a plurality of belt conveyors (54) are arranged on the upper middle of the drainage frame (41), the belt conveyors (54) are located between the adjacent two rotating rollers (53), the belt conveyors (54) are started to convey the metal pipe to a specified position, the servo motor (52) is started to rotate the rotating rollers (53), the metal pipe is conveyed leftward and rightward, and the position of the metal pipe is adjusted to facilitate subsequent work.

5. The automatic bonding apparatus for producing a large-diameter plastic-lined pipe according to claim 2, characterized by: The positioning mechanism (6) comprises first air cylinders (61), V-shaped positioning plates (62) and infrared sensors (63), a plurality of first air cylinders (61) are connected to the middle of the drainage frame (41), the first air cylinders (61) are connected with the V-shaped positioning plates (62) on the extension ends, the V-shaped positioning plates (62) are connected with the infrared sensors (63) in the middle, after the infrared sensors (63) detect that the metal pipe reaches a specified position, the first air cylinders (61) are started to push the V-shaped positioning plates (62) to move upward and lift the metal pipe upward.

6. The automatic bonding apparatus for producing a large-diameter plastic-lined pipe according to claim 1, characterized by: The positioning inflation mechanism (7) comprises air pumps (71), main air pipes (72), branch air pipes (73), second air cylinders (74), air rods (75), guide frames (751), guide rods (752), air blow cylinders (76), pressurized air nozzles (761), air blocking cones (77) and high-temperature-resistant rubber cones (78), left and right two air pumps (71) are connected to the upper side of the middle part of the top plate (21), the air pumps (71) are connected with the main air pipes (72) on the sides away from each other, the lower sides of the main air pipes (72) are connected with a plurality of branch air pipes (73), the branch air pipes (73) are connected with the top plate (21), a plurality of second air cylinders (74) are connected to the sides away from each other of the side plates (2), the second air cylinders (74) are connected with the air rods (75) at the telescopic ends, a plurality of guide frames (751) are connected to the sides close to each other of the side plates (2), the air rods (75) are slidably connected with the adjacent guide frames (751), the lower parts of the guide frames (751) are slidably connected with the guide rods (752), the air rods (75) are connected with the air blow cylinders (76) on the sides close to each other, the branch air pipes (73) are connected with the adjacent air blow cylinders (76), the air blow cylinders (76) are connected with the pressurized air nozzles (761) on the sides close to each other, the air blow cylinders (76) are connected with the air blocking cones (77), the guide rods (752) are connected with the adjacent air blocking cones (77), the air blocking cones (77) are connected with the high-temperature-resistant rubber cones (78), and the high-temperature-resistant rubber cones (78) are connected with the adjacent air blow cylinders (76). The air pump (71) on one side is started, air is supplied to the air blow cylinder (76) on one side through the main air pipe (72) and the branch air pipe (73), the air blow cylinder (76) blows out the impurities in the plastic pipe, the pressurized air nozzle (761) pressurizes the air, the second air cylinder (74) is started, the air rod (75) is pushed to be close to each other, the high-temperature-resistant rubber cone (78) on the air blocking cone (77) contacts the two ends of the plastic pipe, the two ends of the plastic pipe are blocked, and the plastic pipe is clamped at the same time.

7. The automatic bonding apparatus for producing a large-diameter plastic-lined pipe according to claim 6, characterized by: The speed reducer (211), the electric sliding rail (301), the servo motor (52), the belt conveyor (54), the first air cylinder (61), the infrared sensor (63), the air pump (71), the second air cylinder (74), the temperature control module (84) and the processor are electrically connected through the control module.

8. The automatic bonding apparatus for producing a large-diameter plastic-lined pipe according to claim 7, characterized by: The shaping rubber blocks (92) are V-shaped.

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