Full-automatic hot melting butt welding machine

Abstract

The utility model provides a full-automatic hot melting butt welding machine. The full-automatic hot melting butt welding machine comprises a displacement sensor, a temperature sensor, a control device, a rack, a heating plate and a milling cutter. The displacement sensor, the temperature sensor, the milling cutter and the heating plate are all electrically connected with the control device, a clamp is arranged on the rack and comprises a fixed end and a movable end, the fixed end is used for clamping a first pipe in butt joint, the movable end is used for clamping a second pipe in butt joint, and the heating plate is placed between the opposite end faces of the first pipe and the second pipe when used; the displacement sensor is installed on the moving end, and the temperature sensor is installed in the heating plate and used for detecting the temperature of the heating plate. The control device is used for controlling the milling cutter to mill the opposite end faces of the first pipe and the second pipe and controlling the heating plate to heat the end faces of the two pipes. According to the embodiment of the invention, the quality of the welded junction of the pipe in the sweat soldering process is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hot melt welding, in particular to a full-automatic hot melt butt welding machine. BACKGROUND

[0002] With the increasing application of polyethylene pipes (English full name: Polyethylene, English abbreviation: PE) in pressure pipelines, the safety of PE pipes needs to be paid more attention, especially the reliability requirement of large-diameter PE pipes is improved, and the welding joint between large-diameter PE pipes greatly affects the reliability of PE pipes. The hot melt butt welding machine can ensure the reliability and sealing of the welding joint of the pipe connection, and is especially suitable for the connection of large-diameter PE pipes. Therefore, the hot melt butt welding machine plays an increasingly important role in production.

[0003] At present, most of the existing hot melt butt welding machines are manual welding machines, and the hydraulic system is manually controlled to drive the rack to hot melt weld two pipes to be butt-jointed. The pressure and time length supplied to the end face of the pipe are manually controlled by the operator, and the quality of the welding joint between the two pipes is determined by the operation ability of the operator, but the operator cannot accurately control each welding joint. When the operator performs welding operation, he may use too large or too small pressure for welding, or may shorten or lengthen the welding time. Such non-standard pressure and time length parameters will result in a substandard welding joint. Some may be exposed when the pipe is welded and then pressed, and some may not be exposed and may become a hidden danger and be exposed at some time in the future after aeration. For example, if the PE pipe used for gas pipeline is welded due to welding quality problems, a gas leakage accident may occur, causing a fire and explosion accident, which may cause harm to human life and property and safety hazards. CONTENT OF THE INVENTION

[0004] The present application provides a full-automatic hot melt butt welding machine to solve the problems in the background art.

[0005] The present application provides a full-automatic hot melt butt welding machine, which comprises a displacement sensor, a temperature sensor, a control device, a rack, a heating plate and a milling cutter.

[0006] The displacement sensor, the temperature sensor, the milling cutter and the heating plate are electrically connected to the control device. The rack is provided with a clamp, which comprises a fixed end and a movable end. The fixed end is used for clamping a first pipe to be butt-jointed, and the movable end is used for clamping a second pipe to be butt-jointed. The heating plate is used for being placed between the end faces of the first pipe and the second pipe opposite to each other.

[0007] The displacement sensor is installed on the movable end, and the temperature sensor is installed inside the heating plate. The temperature sensor is used for detecting the heating temperature of the heating plate.

[0008] The control device is used for controlling the milling cutter to mill the end face opposite to the second pipe, controlling the moving end to slide to the preset position through the displacement sensor, and controlling the heating time length of the heating plate through the temperature sensor.

[0009] Optionally, a sliding device is installed at one end of the moving end close to the rack, and the sliding device is electrically connected with the control device through the displacement sensor.

[0010] The control device is used for controlling the moving end to slide by changing the position of the sliding device.

[0011] Optionally, the sliding device comprises an oil cylinder, a hydraulic rod, an oil pipe and an oil tank, the oil cylinder is horizontally installed at the moving end of the rack, the oil cylinder slides horizontally on the hydraulic rod, the hydraulic rod is fixed and connected with the moving end through the oil cylinder.

[0012] One end of the oil pipe is connected with the oil tank, and the other end is connected with the oil cylinder.

[0013] The oil tank is installed in the control device, and the control device is used for controlling the oil tank to deliver liquid oil into the oil cylinder through the oil pipe.

[0014] Optionally, the rack further comprises two side plates, two hydraulic rods are installed between the two side plates, the fixed end is installed on the two hydraulic rods, the moving end is installed on the two hydraulic rods through the oil cylinder and can slide along the hydraulic rods, and structures for allowing the first pipe and the second pipe to pass through are designed in the axial direction of the two side plates, the moving end and the fixed end.

[0015] Optionally, the fixed end and the moving end each comprise two upper clamps and two lower clamps, the lower clamps are provided with guide holes on the front and back sides, the two hydraulic rods pass through the four guide holes respectively, and the upper clamps are detachably connected above the lower clamps to form circular holes for clamping pipes.

[0016] Optionally, a variable-diameter chuck is installed between the upper clamps and the lower clamps, and the first pipe and the second pipe can be clamped in the variable-diameter chuck.

[0017] Optionally, the full-automatic hot-melt butt welding machine further comprises a milling cutter heating plate rack, and the milling cutter heating plate rack is used for placing a non-working milling cutter and a non-working heating plate.

[0018] Optionally, the full-automatic hot-melt butt welding machine further comprises a buzzer, and the buzzer is electrically connected with the control device.

[0019] The full-automatic hot-melt butt welding machine provided by the application comprises a displacement sensor, a temperature sensor, a control device, a rack, a heating plate and a milling cutter. The displacement sensor, the temperature sensor, the milling cutter and the heating plate are electrically connected with the control device. The rack is provided with a fixed end and a moving end. The fixed end is used for clamping a first pipe material for butt joint. The moving end is used for clamping a second pipe material for butt joint. The heating plate is used for being placed between the end faces opposite to each other of the first pipe material and the second pipe material. The displacement sensor is installed on the moving end. The temperature sensor is installed in the heating plate. The temperature sensor is used for detecting the heating temperature of the heating plate. The control device is used for controlling the milling cutter to mill the end faces opposite to each other of the first pipe material and the second pipe material, controlling the moving end to slide to a preset position through the displacement sensor, and controlling the heating working time length of the heating plate through the temperature sensor. Compared with the prior art, the distance between the first pipe material and the second pipe material is controlled through the displacement sensor, so that the pressure between the first pipe material and the second pipe material after heating meets the requirements. The temperature sensor is used for detecting the temperature of the heating plate, so that the heating temperature meets the requirements. The control device is used for recording the heating time length in the heating process of the heating plate and the cooling time length in the cooling process, and setting the preset position to which the moving end slides, so that the parameters of hot-melt welding are strictly controlled in the hot-melt welding process, the related parameters are synchronously monitored, the closed control of the key link in the hot-melt welding process is realized, the reliability of the hot-melt butt welding quality is improved, the welding quality of the first pipe material and the second pipe material completely meets the standard, and the unqualified weld joint does not occur, which prevents the safety hidden danger in subsequent use and causes greater influence on the user. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0021] Figure 1 The logic structure schematic diagram of the full-automatic hot-melt butt welding machine provided by an embodiment of the application is shown in the figure.

[0022] Figure 2 The structure schematic diagram of the full-automatic hot-melt butt welding machine provided by an embodiment of the application is shown in the figure.

[0023] Figure 3 The schematic diagram of the upper clamp provided by an embodiment of the application is shown in the figure.

[0024] Figure 4 The logic structure schematic diagram of the full-automatic hot-melt butt welding machine provided by another embodiment of the application is shown in the figure.

[0025] Explanation of reference signs: 1-displacement sensor; 2-temperature sensor; 3-control device; 4-rack; 5-heating plate; 6-milling cutter; 7-fixed end; 8-moving end; 9-first pipe; 10-second pipe; 11-side plate; 12-hydraulic rod; 13-lower clamp; 14-upper clamp; 15-milling cutter heating plate rack; 16-buzzer; 17-oil cylinder. DETAILED DESCRIPTION

[0026] To make the purposes, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are described clearly and completely below. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0027] Figure 1 It is a full-automatic hot-melt butt welding machine according to an embodiment of the present application. As shown in Figure 1 and in combination with Figure 2 , the full-automatic hot-melt butt welding machine comprises: a displacement sensor 1, a temperature sensor 2, a control device 3, a rack 4, a heating plate 5, and a milling cutter 6.

[0028] The displacement sensor 1, the temperature sensor 2, the milling cutter 6, and the heating plate 5 are electrically connected with the control device 3, the rack 4 is provided with a fixed end 7 and a moving end 8, the fixed end 7 is used for clamping a first pipe 9 for butt joint, the moving end 8 is used for clamping a second pipe 10 for butt joint, and the heating plate 5 is used for being placed between the end faces of the first pipe 9 and the second pipe 10 opposite to each other.

[0029] The displacement sensor 1 is installed on the moving end 8, and the temperature sensor 2 is installed in the heating plate 5, and the temperature sensor 2 is used for detecting the heating temperature of the heating plate 5.

[0030] The control device 3 is used for controlling the milling cutter 6 to mill the end faces of the first pipe 9 and the second pipe 10 opposite to each other, and controlling the heating plate 5 to heat the end faces of the two pipes, the displacement sensor 1 is used for controlling the moving end 8 to slide to a preset position, and the temperature sensor 2 is used for controlling the heating working time length of the heating plate 5.

[0031] Among them, the displacement sensor 1 is installed on the moving end 8 and connected with the side plate 11, used for detecting the sliding distance of the moving end 8, and uploading the detection result to the control device 3, and the control device 3 compares the detection result with the preset position of the moving end 8, so that the control device 3 controls the distance between the moving end 8 and the fixed end 7 through the displacement sensor 1.

[0032] The displacement sensor 1 is horizontally arranged, one end of which is connected with the moving end 8, and the other end of which is connected with the side plate 11. The moving end 8 drives the displacement sensor 1 to elongate or shorten during the sliding process, so that the displacement sensor 1 can detect the sliding distance of the moving end 8. For example, the displacement sensor 1 includes a first displacement sleeve and a second displacement sleeve. The first displacement sleeve is connected with the moving end 8, the second displacement sleeve is connected with the side plate 11, and the first displacement sleeve is slidingly sleeved outside the second displacement sleeve. The sliding distance of the first displacement sleeve along the second displacement sleeve determines the sliding distance of the moving end 8.

[0033] The temperature sensor 2 is arranged in the heating plate 5, and is used to detect the temperature of the heating plate 5. The temperature sensor 2 can accurately detect the temperature of the heating plate 5. The temperature sensor 2 uploads the detected temperature to the control device 3, and the control device 3 controls the temperature of the heating plate 5.

[0034] The milling cutter 6 is electrically connected with the control device 3. The control device 3 controls the milling cutter 6 to mill the end face opposite to the first pipe 9 and the second pipe 10, so that the end face opposite to the first pipe 9 and the second pipe 10 is more closely connected during the subsequent hot melting welding process.

[0035] Further, the milling cutter 6 is moved into the rack 4 during use. The control device 3 controls the milling cutter 6 to work automatically. When the milling cutter 6 is not in use, it needs to be taken out from the rack 4 and placed in the milling cutter hot plate rack 15. The milling cutter hot plate rack 15 is placed around the rack 4 to facilitate the use of the staff and not to affect the position of the staff.

[0036] The heating plate 5 is placed between the end faces opposite to the first pipe 9 and the second pipe 10 during use, and is used to heat the end faces of the first pipe 9 and the second pipe 10, so that they are better fused together. When the heating plate 5 is not in use, it needs to be taken out from the rack 4 and placed in the milling cutter hot plate rack 15.

[0037] Further, the control device 3 detects the temperature of the heating plate 5 through the temperature sensor 2, and controls the temperature of the heating plate 5 according to the detected temperature. The temperature of the heating plate 5 is prevented from being too high to reduce the quality of the welding joint of the first pipe 9 and the second pipe 10, or the temperature of the heating plate 5 is prevented from being too low to cause the fusion joint of the first pipe 9 and the second pipe 10 to be easily disconnected after hot melting welding.

[0038] The rack 4 is provided with the moving end 8 and the fixed end 7, and in use, only the position of the moving end 8 needs to be moved to make the distance between the first pipe 9 and the second pipe 10 suitable for work, so that the length of the first pipe 9 extending from the fixed end 7 and the length of the second pipe 10 extending from the moving end 8 are the optimal lengths suitable for welding, at the same time, the additional workload of the workers caused by incorrect clamping of the pipes is reduced, and the welding quality and work efficiency are improved.

[0039] The working process of the full-automatic hot-melt butt welding machine is as follows:

[0040] When hot-melt welding is needed, first, the worker opens the control device 3, and adjusts the welding standards of this hot-melt welding according to the work requirements of this hot-melt welding, such as the temperature of the heating plate 5 during welding, the crimping time of hot-melt welding, the heat absorption time, the cooling time after hot-melt welding is completed, the worker's identity information, etc., when the worker sets the work requirements, the worker confirms that the setting is completed at the control device 3 end;

[0041] The control device 3 reminds the worker to put the first pipe 9 in the fixed end 7 of the rack 4 and the second pipe 10 in the moving end 8, and fix them firmly to prevent the first pipe 9 and the second pipe 10 from sliding during hot-melt welding;

[0042] After the first pipe 9 and the second pipe 10 are fixed firmly, the control device 3 prompts to put the milling cutter 6, the worker puts the milling cutter 6 between the moving end 8 and the fixed end 7 of the rack 4, the control device 3 controls the milling cutter 6 to start milling, and the worker observes the milling result of the milling cutter 6 during milling, such as when the milling cutter 6 continuously mills two circles, at this time, the milling is completed, the worker takes out the milling cutter 6 and places it in the fixed placement position in the unused state, according to the process operation, the control device 3 gives an end face inspection process, and after the worker confirms, the control device 3 reminds to put in the heating plate 5, and the temperature of the heating plate 5 has reached the set temperature according to the control of the control device 3;

[0043] When the heating plate 5 is placed between the opposite end faces of the first pipe 9 and the second pipe 10, the control device 3 controls the moving end 8 to start sliding until the moving end 8 moves to the first preset position, where the end faces of the first pipe 9 and the second pipe 10 are in contact with the heating surfaces on both sides of the heating plate 5, ensuring that there is a certain pressure between the opposite end faces of the first pipe 9 and the second pipe 10. The heating plate 5 begins to heat the opposite end faces of the first pipe 9 and the second pipe 10. Due to the certain pressure between the opposite end faces of the first pipe 9 and the second pipe 10 and the heating plate 5, the moving end 8 drives the second pipe 10 to slide, so that the opposite end faces of the first pipe 9 and the second pipe 10 form a flange of a specified height during heating. After the specified flange height is reached, the control device 3 controls the moving end 8 to stop sliding and controls the heating time of the heating plate 5 according to the heating time set in the control device 3. When the preset heating time of the heating plate 5 is reached, the control device 3 controls the heating plate 5 to stop heating and prompts the user to proceed to the next stage.

[0044] The operator removes the heating plate 5 and places it in the position it would have been in when not in use. After removing the heating plate 5, the control device 3 controls the moving end 8 to move the second pipe 10, so that the opposite end faces of the first pipe 9 and the second pipe 10 are in contact. At the same time, the displacement sensor 1 detects the position of the moving end 8. When the moving end 8 reaches the second preset position, the opposite end faces of the first pipe 9 and the second pipe 10 are subjected to a preset pressure value. At this time, the first pipe 9 and the second pipe 10 enter the welding-cooling stage. The control device 3 records the welding-cooling time from the time the frame 4 is closed. When the welding-cooling time reaches the preset time, the control device 3 prompts the operator that the hot melt welding is complete and the upper clamp can be disassembled.

[0045] The first preset position and the second preset position are automatically set by the control device 3 according to the welding parameters and process standards.

[0046] In this embodiment, the fully automatic hot melt butt welding machine includes: a displacement sensor 1, a temperature sensor 2, a control device 3, a frame 4, a heating plate 5, and a milling cutter 6. The displacement sensor 1, temperature sensor 2, milling cutter 6, and heating plate 5 are all electrically connected to the control device 3. The frame 4 is provided with a fixed end 7 and a movable end 8. The fixed end 7 is used to clamp the first pipe 9 to be welded, and the movable end 8 is used to clamp the second pipe 10 to be welded. The heating plate 5 is used to be placed between the opposite end faces of the first pipe 9 and the second pipe 10. The displacement sensor 1 is installed on the movable end 8, and the temperature sensor 2 is installed inside the heating plate 5. The temperature sensor 2 is used to detect the heating temperature of the heating plate 5. The control device 3 is used to control the milling cutter 6 to mill the opposite end faces of the first pipe 9 and the second pipe 10, to control the movable end 8 to slide to a preset position through the displacement sensor 1, and to control the heating working time of the heating plate 5 through the temperature sensor 2. Compared to existing technologies, this application controls the distance between the first pipe 9 and the second pipe 10 using a displacement sensor 1, thereby ensuring that the pressure between the first pipe 9 and the second pipe 10 meets the requirements after heating. A temperature sensor 2 is used to detect the temperature of the heating plate 5 to ensure that the heating temperature meets the requirements. A control device 3 is used to record the heating time of the heating plate 5 during the heating process and the welding-cooling time during the welding-cooling process, and to set the preset position to which the moving end 8 moves. This allows for strict control of the parameters of the hot-melt welding process, synchronous monitoring, control, and recording of relevant parameters, realizing closed-loop control of key links in the hot-melt welding process, improving the reliability of the hot-melt butt welding quality, and ensuring that the welding quality of the first pipe 9 and the second pipe 10 fully meets the standards. This prevents one or more weld joints from being unqualified, which could lead to safety hazards in subsequent use and cause greater impact on users.

[0047] Optionally, a sliding device is installed at one end of the frame 4 near the moving end 8, and the sliding device is electrically connected to the control device 3 through the displacement sensor 1;

[0048] The control device 3 is used to control the sliding end 8 to slide by changing the position of the sliding device.

[0049] The sliding device is used to control the sliding of the moving end 8. The control device 3 controls the sliding device to make the moving end 8 slide to the second preset position. For example, when the heating plate 5 is removed after heating is completed, and the opposite end faces of the first pipe 9 and the second pipe 10 need to be put together, the control device 3 controls the sliding device to slide, thereby controlling the moving end 8 to drive the end face of the second pipe 10 to slide towards the opposite end face of the first pipe 9.

[0050] The closer the second preset position of the mobile terminal 8 is to the position of the fixed end 7, the greater the pressure between the first pipe 9 and the second pipe 10; the farther the second preset position of the mobile terminal 8 is from the position of the fixed end 7, the smaller the pressure between the first pipe 9 and the second pipe 10.

[0051] Optionally, the sliding device includes a hydraulic cylinder 17, a hydraulic rod 12, an oil pipe and an oil tank. The hydraulic cylinder 17 is horizontally mounted on the moving end 8 of the frame 4. The hydraulic cylinder 17 slides horizontally on the hydraulic rod 12. The hydraulic rod 12 is fixed and connected to the moving end 8 through the hydraulic cylinder 17.

[0052] One end of the oil pipe is connected to the oil tank, and the other end is connected to the oil cylinder 17;

[0053] The oil tank is installed inside the control device 3, which is used to control the oil tank to deliver liquid oil to the oil cylinder 17 through the oil pipe.

[0054] When the sliding device controls the sliding end 8 to slide, the control device 3 controls the oil tank, causing the liquid oil inside the tank to be transported to the oil pipe. The oil pipe then delivers the liquid oil to the oil cylinder 17. As the oil pipe continuously supplies liquid oil to the oil cylinder 17, the oil pressure inside the oil cylinder 17 increases, pushing the oil cylinder 17 to slide on the hydraulic rod 12. The oil cylinder 17 is horizontally mounted on the hydraulic rod 12 and can slide along the hydraulic rod 12.

[0055] When the sliding device controls the sliding end 8 to slide, the control device 3 controls the oil tank, so that the oil tank transports the liquid oil in the oil cylinder 17 to the oil tank through the oil pipe. As the liquid oil in the oil cylinder 17 decreases, the internal oil pressure decreases, pushing the oil cylinder 17 to slide in the opposite direction on the hydraulic rod 12.

[0056] Furthermore, the hydraulic pressure inside the cylinder 17 controls the cylinder 17 to slide bidirectionally on the hydraulic rod 12, thereby enabling the control device 3 to control the moving end 8 to slide accurately to the second preset position, and the hydraulic pressure can provide sufficient thrust to make the moving end 8 drive the second pipe 10 to slide.

[0057] Optionally, see Figure 2 The frame 4 also includes two side plates 11. Two hydraulic rods 12 are installed on the front and rear sides between the two side plates 11. The fixed end 7 is installed on the two hydraulic rods 12. The movable end 8 is installed on the two hydraulic rods 12 through the oil cylinder 17 and can slide along the hydraulic rods 12. The two side plates 11, the movable end 8, and the fixed end 7 are designed with an arc-shaped structure in the axial direction that allows the first pipe 9 and the second pipe 10 to pass through and be installed.

[0058] The system comprises two vertically arranged side plates 11, with two hydraulic rods 12 fixedly installed between them, located at the front and rear ends of the side plates 11 respectively. Each hydraulic rod 12 is used to mount a fixed end 7 and a movable end 8. The fixed end 7 is stationary relative to the hydraulic rod 12, while the movable end 8 can slide along the two hydraulic rods 12. Furthermore, the arc-shaped structure on the side plate 11 matches the shape of the first pipe 9 and the second pipe 10, ensuring that the first pipe 9 passes through the side plate 11 and is placed at the fixed end 7, and the second pipe 10 passes through the side plate 11 and is placed at the movable end 8, thus ensuring that the first pipe 9 and the second pipe 10 are coaxial. Additionally, a guide rod is installed between the two side plates 11, outside the hydraulic rods 12, to ensure the stability of the connection between the two side plates 11 and to improve the guiding nature of the sliding end 8.

[0059] Furthermore, the surface of the arc-shaped structure has a suitable distance from the lower surface of the second tube 10 to ensure that the sliding of the second tube 10 is smooth and stable when the moving end 8 controls it.

[0060] The hydraulic rod 12 is installed between the two side plates 11 to stabilize and fix the two side plates 11 and prevent them from shaking. At the same time, the two hydraulic rods 12 can also make the moving end 8 slide more smoothly and stably on the hydraulic rods 12.

[0061] Furthermore, when the mobile end 8 slides, the sliding device is controlled by the control device 3 so that the mobile end 8 can slide smoothly on the two hydraulic rods 12 to the second preset position.

[0062] Optionally, see Figure 2 and Figure 3 Both the fixed end 7 and the movable end 8 include a lower clamp 13 and an upper clamp 14. The lower clamp 13 has guide holes on its front and rear sides. Two hydraulic rods 12 pass through the two guide holes respectively. The upper clamp 14 is detachably connected to the upper clamp 13 to form a round hole for clamping pipes.

[0063] The fixed end 7 includes a lower clamp 13 and an upper clamp 14 for fixing the first pipe 9, and the movable end 8 includes a lower clamp 13 and an upper clamp 14 for fixing the second pipe 10. Taking the second pipe 10 being placed into the movable end 8 as an example, when the second pipe 10 needs to be placed in, the worker opens the upper clamp 14 above the lower clamp 13. For example, if the lower clamp 13 and the upper clamp 14 are connected by bolts on their front and rear sides, the bolts are loosened to separate the upper clamp 14 from the lower clamp 13. At this time, the second pipe 10 is placed into the movable end 8 along the arc-shaped structure of the lower clamp 13. The worker then places the upper clamp 14 on the lower clamp 13 and loosens the bolts connecting the two to fix the upper clamp 14 and the lower clamp 13, thereby fixing the second pipe 10 in the movable end 8.

[0064] Furthermore, the lower clamp 13 of the mobile end 8 has guide holes at the front and rear, and the two hydraulic rods 12 pass through the two guide holes respectively, so that when the mobile end 8 slides, the lower clamp 13 of the mobile end 8 slides on the hydraulic rods 12 through the two guide holes.

[0065] Optionally, the movable end 8 may include two lower clamps 13 and two upper clamps 14 respectively connected to the lower clamps 13. The movable end 8, composed of the two lower clamps 13 and the two upper clamps 14, can improve the stability of sliding the second pipe 10. A hydraulic cylinder 17 is connected between the two lower clamps 13, and the hydraulic cylinder 17 is sleeved on the hydraulic rod 12 so that the hydraulic cylinder 17 slides along the hydraulic rod 12.

[0066] Optionally, a reducing chuck is installed between the upper clamp 14 and the lower clamp 13, and the first pipe 9 and the second pipe 10 can be clamped in the reducing chuck to accommodate pipes of different specifications.

[0067] Optionally, the fully automatic hot melt butt welding machine also includes: a milling cutter hot plate holder 15, which is used to place unused milling cutters 6 and unused heating plates 5.

[0068] The milling cutter hot plate holder 15 is placed around the frame 4 for easy access by staff and without affecting their position.

[0069] The milling cutter hot plate holder 15 includes a milling cutter holder and a heating plate holder. The milling cutter holder is used to place unused milling cutters 6, and the heating plate holder is used to place unused heating plates 5.

[0070] Furthermore, the milling cutter holder and the heating plate holder are fixed together, which makes it easy for workers to quickly locate the positions of the milling cutter 6 and the heating plate 5, improving work efficiency, while avoiding collisions between the milling cutter 6 and the heating plate 5 due to improper placement, which could damage the equipment.

[0071] Optionally, see Figure 4 The fully automatic hot melt butt welding machine also includes a buzzer 16, which is electrically connected to the control device 3.

[0072] The buzzer 16 is used to alert staff to handle any improper operation during operation, such as stopping heating and moving the heating plate 5 before the heating time is up, or removing the pipe before the cooling time is up. Specifically, the buzzer 16 can be installed on the control device 3.

[0073] For example, when the heating plate 5 is removed and the cooling stage begins, the control device 3 has a preset welding-cooling time, such as 120 seconds. If the time exceeds 120 seconds, it is normal for the staff to remove the pipe. If the timer on the control device 3 has not reached 120 seconds, and the staff removes the pipe, the control device 3 will control the buzzer 16 to start.

[0074] Finally, it should be noted that any content not described in the technical solutions of this application can be implemented using existing technology. Furthermore, the above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of this application.

Claims

1. A fully automatic hot melt butt welding machine, characterized in that, include: Displacement sensor, temperature sensor, control device, frame, heating plate and milling cutter; The displacement sensor, the temperature sensor, the milling cutter, and the heating plate are all electrically connected to the control device. A clamp is provided on the frame, the clamp including a fixed end and a movable end. The fixed end is used to clamp the first pipe to be connected, the movable end is used to clamp the second pipe to be connected, and the heating plate is used to be placed between the opposite end faces of the first pipe and the second pipe. The displacement sensor is installed on the moving end, and the temperature sensor is installed inside the heating plate. The temperature sensor is used to detect the heating temperature of the heating plate. The control device is used to control the milling cutter to mill the opposite end faces of the first tube and the second tube, control the moving end to slide to a preset position through the displacement sensor, and control the heating working time of the heating plate through the temperature sensor.

2. The fully automatic hot melt butt welding machine according to claim 1, characterized in that, A sliding device is installed at one end of the frame near the moving end, and the sliding device is electrically connected to the control device through the displacement sensor. The control device is used to control the sliding of the mobile end by changing the position of the sliding device.

3. The fully automatic hot melt butt welding machine according to claim 2, characterized in that, The sliding device includes a hydraulic cylinder, a hydraulic rod, an oil pipe, and an oil tank. The hydraulic cylinder is horizontally mounted on the moving end of the frame. The hydraulic cylinder slides horizontally on the hydraulic rod, and the hydraulic rod is fixed and connected to the moving end through the hydraulic cylinder. One end of the oil pipe is connected to the oil tank, and the other end is connected to the oil cylinder; The oil tank is installed inside the control device, which controls the oil tank to deliver liquid oil to the oil cylinder through the oil pipe.

4. The fully automatic hot melt butt welding machine according to claim 3, characterized in that, The frame also includes two side plates, and two hydraulic rods are installed on the front and rear sides between the two side plates. The fixed end is installed on the two hydraulic rods, and the movable end is installed on the two hydraulic rods through the oil cylinder and can slide along the hydraulic rods. The two side plates, the movable end, and the fixed end are designed with an arc-shaped structure in the axial direction that allows the first pipe and the second pipe to pass through and be installed.

5. The fully automatic hot melt butt welding machine according to claim 4, characterized in that, Both the fixed end and the moving end include two upper clamps and two lower clamps. Guide holes are provided on the front and rear sides of the lower clamps. Two hydraulic rods pass through the four guide holes respectively. The upper clamps are detachably connected to the upper clamps to form a circular hole for clamping pipes.

6. The fully automatic hot melt butt welding machine according to claim 5, characterized in that, A reducing chuck is installed between the upper clamp and the lower clamp, and the first pipe and the second pipe can be clamped in the reducing chuck.

7. The fully automatic hot melt butt welding machine according to claim 1, characterized in that, Also includes: A milling cutter hot plate holder is used to hold unused milling cutters and unused heating plates.

8. The fully automatic hot melt butt welding machine according to any one of claims 1-7, characterized in that, It also includes a buzzer, which is electrically connected to the control device.

Images