Insulated joint automatic forming apparatus and forming method

Abstract

The application discloses an automatic forming device and forming method for an insulation joint. The automatic forming device for the insulation joint comprises a rotating platform, a heating system, a secondary heating device, a cooling device and a waste heat recovery device which are arranged around the rotating platform. A plurality of molds for positioning the insulation joint are arranged on the rotating platform. The heating system, the secondary heating device and the cooling device sequentially perform one-time heating, secondary heating and cooling on the insulation joint. The application can realize high-efficiency automatic production of the insulation joint, ensure the uniformity and stability of the insulation joint heating, guarantee the performance of the insulation joint, and is more energy-saving and environment-friendly.

Description

Technical Field

[0001] This invention belongs to the field of rail insulation joint production technology, and in particular relates to automatic forming equipment and forming method for insulation joints. Background Technology

[0002] Insulating joints are crucial connecting components of rails. In recent years, with the continuous increase in train speeds and loads in China, rail insulating joints have been subjected to greater impact and longitudinal forces. This necessitates that insulating joints not only possess excellent insulation performance but also high strength, high rigidity, and good fatigue resistance to ensure safe railway operation. An insulating joint consists of a fishplate and a protective plate surrounding the fishplate. An insulating layer is placed between the fishplate and the protective plate. Heating and melting the insulating layer connects the fishplate and the protective plate to form the insulating joint. During the production of insulating joints, excessively high or low heat treatment temperatures can adversely affect the insulating layer. Therefore, the forming equipment needs more precise temperature control technology and the ability to employ multiple heating processes to ensure the quality of the insulating joint, guaranteeing the uniformity and stability of the heating process. After heating, the insulating joint also needs to be cooled. To meet the demands of mass production of insulating joints, corresponding automated production equipment needs to be designed. This equipment needs to have multiple heating and cooling functions to achieve highly efficient, fully automated production of insulating joints.

[0003] In the prior art, Chinese patent application publication number CN110343832A discloses a special heating furnace production line for railway track clamps, which includes a material tray, a material platform, a heating furnace, a quenching furnace, a tempering furnace, and a cooling furnace. The quenching furnace, tempering furnace, and cooling furnace are sequentially arranged on one side of the material platform, and the heating furnace is located behind the quenching furnace. This solution still has the following problems:

[0004] (1) The material trays, material platforms, heating furnaces, quenching furnaces, tempering furnaces and cooling furnaces are arranged in a straight line, which occupies a lot of space and is not conducive to the layout of the production line.

[0005] (2) During production, the robot arm needs to move the workpieces of the station to the subsequent stations in sequence for heat treatment. The moving cycle of one robot arm is slow and the production efficiency is low.

[0006] (3) This solution requires primary and secondary heating of the insulating joint, but does not involve quenching and tempering processes. Therefore, the heating furnace production line cannot meet the production process of the insulating joint.

[0007] Therefore, it is necessary to provide automatic forming equipment and forming methods for insulating joints to solve the above-mentioned technical problems. Summary of the Invention

[0008] The main objective of this invention is to provide an automatic forming equipment for insulating joints, which can achieve highly efficient automated production of insulating joints, ensure the uniformity and stability of heating of insulating joints, thereby guaranteeing the performance of insulating joints, and is also more energy-saving and environmentally friendly.

[0009] The present invention achieves the above objectives through the following technical solution: an automatic forming equipment for insulating joints, comprising a rotating platform, wherein a plurality of molds for positioning insulating joints are arranged on the rotating platform, and a loading and unloading station, a heating station, a secondary heating station and a cooling station are arranged sequentially around the rotating platform;

[0010] A heating system is installed at the heating station to heat the insulating joint;

[0011] A secondary heating device is installed at the secondary heating station to perform secondary heating on the insulating joint;

[0012] A cooling device is installed at the cooling station to cool the insulating joint and the mold;

[0013] The waste heat recovery device transfers the waste heat from the heating system to the secondary heating device for reuse.

[0014] Furthermore, the mold includes a mold body, which is provided with a plurality of positioning grooves for accommodating insulating joints. Each positioning groove is provided with a plurality of bolts for positioning insulating joints. A limiting rod is movably provided at the bottom of the mold body below the bolts. When the limiting rod is located at the bottom of the bolt, it can limit the bolt. After the limiting rod is moved away from below the bolt, the bolt can fall off the mold body.

[0015] Furthermore, the heating system includes a first gas chamber and a second gas chamber arranged vertically opposite each other, and a heating cavity located between the first gas chamber and the second gas chamber. A hollow tube with a permanent flame is provided in the heating cavity near the first gas chamber and the second gas chamber. A gas pipeline and an air pipeline are connected to the first gas chamber and the second gas chamber, and the hollow tube with the permanent flame is connected to the gas pipeline. A mixing heating plate for fully mixing gas and air is provided in the first gas chamber and the second gas chamber.

[0016] Furthermore, the first air chamber and the second air chamber are connected by a first insulation plate. The first insulation plate is provided with an ignition rod near the first air chamber and the second air chamber, and the ignition rod is located at one end of the pilot flame hollow tube. The heating chamber is also provided with an insulation door to prevent heat loss and a lifting drive mechanism to drive the insulation door to move up and down.

[0017] Furthermore, the mixing heating plate has a mixing cavity inside for mixing air and gas to form a mixed gas. One side of the mixing cavity has a first air inlet for air and gas to enter, and the other opposite side has several small air outlet holes for the mixed gas to exit. Both the first and second air chambers are provided with a second insulation plate on which the mixing heating plate is installed. The second insulation plate is provided with a second air inlet that communicates with the first air inlet. Both second air inlets are connected to the gas pipeline and the air pipeline.

[0018] Furthermore, the waste heat recovery device includes a first blower, a first conveying pipe connected between the first blower and the heating chamber, and a second and a third conveying pipe connected between the first blower and the secondary heating device.

[0019] Furthermore, the secondary heating device includes a first heat insulation cover, a second heat insulation cover, and a driving mechanism for aligning and closing the first heat insulation cover and the second heat insulation cover. After the first heat insulation cover and the second heat insulation cover are closed, a heating space is formed inside to accommodate the object to be heated. The first heat insulation cover is connected to the second conveying pipe, the second heat insulation cover is connected to the third conveying pipe, and both the second conveying pipe and the third conveying pipe are in communication with the heating space.

[0020] Furthermore, the cooling device includes an air-cooling mechanism and a water-cooling mechanism, with the air-cooling mechanism located above the water-cooling mechanism; the air-cooling mechanism includes an air inlet bracket and a plurality of air-cooling components disposed at the bottom of the air inlet bracket, with a plurality of air outlet holes disposed at the bottom of the air-cooling components; the water-cooling mechanism includes a water tank for containing cooling water, a high-pressure water spray pipe disposed inside the water tank and spraying water upward, and a first circulating water pump assembly connected to the high-pressure water spray pipe.

[0021] Furthermore, the first circulating water pump assembly includes a first inlet pipe connected to the high-pressure water spray pipe and a first circulating water pump connected to the first inlet pipe. The water tank is connected to a first outlet pipe below the first inlet pipe, and the other end of the first outlet pipe is connected to the first circulating water pump.

[0022] Furthermore, a cooling water replacement mechanism is connected to the water tank. The cooling water replacement mechanism includes a second outlet pipe and a second inlet pipe connected to the water tank. The second outlet pipe is located below the second inlet pipe. The other ends of the second outlet pipe and the second inlet pipe are connected to a second circulating water pump. A third outlet pipe is connected to the middle of the second inlet pipe. A first solenoid valve is connected to the second inlet pipe near the water tank, and a second solenoid valve is connected to the second circulating water pump. The third outlet pipe is located between the first solenoid valve and the second solenoid valve.

[0023] Another objective of this invention is to provide an automated forming method for insulating joints, which can achieve highly efficient automated production of insulating joints and ensure the uniformity and stability of heating of the insulating joints, thereby guaranteeing the performance of the insulating joints.

[0024] This invention achieves the above objective through the following technical solution: an automatic forming method for insulating joints, comprising the following steps:

[0025] S1. Position the insulating connector to be heated on the mold at the loading and unloading station;

[0026] S2. The rotating platform drives the mold and the insulating joint to be heated to rotate to the heating station, so that the mold and the insulating joint to be heated are located in the heating system, and the heating system heats the insulating joint once.

[0027] S3. The rotating platform drives the mold and the insulating joint after the first heating to rotate to the secondary heating station, so that the mold and the insulating joint to be heated are located in the secondary heating device, and the secondary heating device performs secondary heating on the insulating joint;

[0028] S4. The rotating platform drives the mold and the insulating joint after secondary heating to rotate to the cooling station, so that the mold and the insulating joint to be heated are located in the cooling device, and the cooling device cools the insulating joint and the mold.

[0029] S5. The rotating platform drives the mold and the cooled insulating joint to rotate to the loading and unloading station, and removes the formed insulating joint.

[0030] Compared with the prior art, the beneficial effects of the automatic forming equipment and forming method for insulating joints of the present invention are as follows:

[0031] (1) A heating system, a secondary heating device and a cooling device are sequentially installed on the outer periphery of the rotating platform, which can realize the primary heating, secondary heating, cooling and loading / unloading of the insulating joint. The continuous two heating methods are adopted to ensure the production quality of the insulating joint. In addition, the heating system is also equipped with a waste heat recovery device, which uses the residual heat of the heating system for secondary heating to achieve further curing of the insulating joint. This not only improves the quality, but also makes the use of residual heat heating more energy-efficient and environmentally friendly. Moreover, the use of a rotating platform to transport products makes the space occupied by the entire equipment small, which is conducive to the layout of the production line equipment.

[0032] (2) A limiting rod is movable at the bottom of the mold body. The limiting rod is inserted into the bottom of the bolt to limit the bolt and ensure the stability of the insulation joint positioning. If the bolt is damaged, the limiting rod below the corresponding bolt can be pulled out, and the bolt will fall off. A new bolt can be replaced, and then the limiting rod can be inserted again to limit the new bolt. The bolt replacement is simple and convenient, and it does not require removing the special mold from the production equipment, which saves time. Therefore, the mold makes the replacement and maintenance of parts simple and convenient, and the maintenance time is short, which can improve the production efficiency of insulation joints.

[0033] (3) The first and second gas chambers, which are arranged opposite each other, are connected to gas pipelines and air pipelines. Both the first and second gas chambers are equipped with a mixing heating plate that fully mixes the gas and air. After the ignition rod is lit, the flame will spread to the entire surface of the mixing heating plate. The heat on the surface of the mixing heating plate is uniform. The flame on the lower surface of the mixing heating plate in the first gas chamber heats the upper surface of the insulating joint, and the flame on the upper surface of the mixing heating plate in the second gas chamber heats the lower surface of the insulating joint. This ensures that the outer periphery of the object to be heated is heated evenly, thereby ensuring the performance of the insulating joint. A permanent flame hollow tube is installed in the heating chamber near the first and second gas chambers. The outer periphery of the permanent flame hollow tube is always in a burning state, which keeps the heating chamber in a burning state. This makes the gas in the first and second gas chambers burn more completely, ensuring the stability of the heating, thereby ensuring the performance of the insulating joint. Therefore, the heating system can ensure the uniformity and stability of the heating, thereby ensuring the performance of the object to be heated.

[0034] (4) The cooling device includes an air cooling mechanism and a water cooling mechanism, which can simultaneously cool the product with air and water. The air cooling mechanism cools the upper insulating joint, and the water cooling mechanism cools the lower mold. The air cooling mechanism and the water cooling mechanism can perform cooling functions at the same time without interfering with each other, and can also improve the cooling efficiency. The first circulating water pump assembly on the water cooling mechanism can realize the recycling of cooling water and reduce production costs. The cooling water replacement mechanism can replace the coolant. The cooling water replacement mechanism can draw the high-temperature cooling water in the water tank to the cooling tower for cooling. After cooling to the set temperature, the low-temperature cooling water is drawn back into the water tank, which can improve the cooling efficiency. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the structure of the automatic forming equipment for insulating joints according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of the rotating platform and the mold according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of the mold including the lifting drive assembly in an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of the upper surface of the mold body according to an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the bottom structure of the mold body according to an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the heating system according to an embodiment of the present invention;

[0041] Figure 7 This is a schematic diagram of the structure of the waste heat recovery device, waste discharge device, heat preservation cover and lifting drive mechanism of the heating system according to an embodiment of the present invention.

[0042] Figure 8 This is a schematic diagram from another perspective of the structure of the waste heat recovery device, waste discharge device, heat preservation cover and lifting drive mechanism of the heating system in an embodiment of the present invention;

[0043] Figure 9 This is a schematic diagram of the structure of the gas pipeline, air pipeline, hollow propellant tube, and third gas branch pipe according to an embodiment of the present invention.

[0044] Figure 10 This is a cross-sectional view of the hybrid heating plate according to an embodiment of the present invention;

[0045] Figure 11 This is a schematic diagram of the secondary heating device according to an embodiment of the present invention;

[0046] Figure 12 This is a schematic diagram of the structure of the first heat preservation cover and the driving mechanism in an embodiment of the present invention;

[0047] Figure 13 This is a schematic diagram of the cooling device according to an embodiment of the present invention;

[0048] Figure 14 This is a schematic diagram of the air-cooling mechanism according to an embodiment of the present invention;

[0049] Figure 15 This is a schematic diagram of the water-cooling mechanism according to an embodiment of the present invention;

[0050] Figure 16 This is a partial structural diagram of the water-cooling mechanism of this invention after the high-pressure water spray pipe has been removed;

[0051] The numbers in the diagram represent:

[0052] 100 - Automatic forming equipment for insulating joints; 200 - Loading and unloading station; 300 - Heating station; 400 - Secondary heating station; 500 - Cooling station; 900 - Insulating joints;

[0053] 1-Rotating platform, 11-Positioning component, 12-Rotating table, 13-Rotating drive component, 14-Support arm;

[0054] 2-Mold, 21-Mold body, 211-First through hole, 212-Ejector pin, 213-Counterhead hole, 22-Positioning groove, 23-Bolt, 24-Limit rod, 241-Handle, 25-Disc spring, 26-Nut, 27-Lifting drive assembly, 271-Lifting cylinder, 272-Lifting plate, 28-Limit block, 29-Mounting block, 291-Mounting hole;

[0055] 3-Heating system; 31-First gas chamber; 32-Second gas chamber; 33-Heating cavity; 34-Ignition rod; 35-Hollow pilot light tube; 36-Gas pipeline; 361-Main gas pipeline; 362-First gas branch pipe; 363-Second gas branch pipe; 364-Gas pressure regulating valve; 365-Gas pressure gauge; 366-Gas pressure switch; 367-Gas shut-off valve; 368-Third gas branch pipe; 37-Air pipeline; 371-Main air pipeline; 372-First air branch pipe; 373-Second air branch pipe; 374-Air filter. 375-Air supply pump, 38-Mixing heating plate, 381-Mixing cavity, 382-First air inlet, 383-Air outlet hole, 39-Lifting drive mechanism, 320-Insulated door, 330-Thermocouple, 340-Waste heat recovery device, 3401-First blower, 3402-First conveying pipe, 3403-Second conveying pipe, 3404-Third conveying pipe, 350-Waste discharge device, 3501-Waste discharge pipe, 3502-Second blower, 360-First insulation plate, 370-Second insulation plate, 3701-Second air inlet;

[0056] 5-Secondary heating device, 51-First heat preservation cover, 513-Second clearance opening, 52-Second heat preservation cover, 55-Drive mechanism, 551-First driving component, 552-Moving frame, 553-Second driving component, 554-Mounting bracket, 555-First fastener, 559-Guide assembly, 56-Base;

[0057] 6-Cooling device, 61-Air-cooled mechanism, 611-Air inlet bracket, 612-Air-cooled component, 613-Air inlet pipe, 614-Air outlet, 62-Water-cooled mechanism, 621-Water tank, 6211-Water inlet, 6212-Water outlet, 6213-First valve, 622-High-pressure water spray pipe, 6221-First connecting pipe, 6222-Water spray pipe, 6223-Water outlet, 623-First circulating water pump assembly 6231-First inlet pipe, 6232-First circulating water pump, 6233-First outlet pipe, 624-Filter screen, 625-Cooling water replacement mechanism, 6251-Second outlet pipe, 6252-Second inlet pipe, 6253-Second circulating water pump, 6254-Third outlet pipe, 6255-First solenoid valve, 6256-Second solenoid valve, 626-Temperature sensor, 627-Water level sensor;

[0058] 7-Disassembly fixture; 8-Lifting fixture; 9-Frame. Detailed Implementation

[0059] Please refer to Figures 1-16 This embodiment is an automatic forming equipment 100 for insulating joints, which includes a rotating platform 1. Several molds 2 for positioning insulating joints 900 are set on the rotating platform 1. A loading and unloading station 200, a heating station 300, a secondary heating station 400 and a cooling station 500 are arranged in sequence around the conveying direction of the rotating platform 1. A heating system 3 for heating the insulating joints 900 is set at the heating station 300. A secondary heating device 5 for secondary heating the insulating joints 900 is set at the secondary heating station 400. A cooling device 6 for cooling the insulating joints 900 and the molds 2 is set at the cooling station 500.

[0060] The rotating platform 1 is used to transport the insulating joint 900, and the outer periphery of the rotating platform 1 is sequentially equipped with a heating system 3, a secondary heating device 5 and a cooling device 6. This layout makes the entire molding equipment occupy less space and is conducive to the layout of the production line.

[0061] The rotating platform 1 includes a rotating table 12, a rotating drive 13 that drives the rotating table 12 to rotate around a vertical axis, and several positioning components 11 disposed on the outer periphery of the rotating table 12 to support the mold 2. Each positioning component 11 is fixed to the outer periphery of the rotating table 12 by a support arm 14. Each station is provided with a positioning component 11, and each positioning component 11 contains a mold 2. The mold 2 is used to position the insulating connector 900. After the insulating connector 900 is placed in the mold 2 at the loading / unloading station 200, the rotating drive 13 drives the rotating table 12 to rotate, so that the mold 2, carrying the insulating connector 900, rotates sequentially to the heating station 300, the secondary heating station 400, and the cooling station 500 to complete the forming action of the insulating connector 900. Finally, it rotates back to the loading / unloading station 200 to remove the formed insulating connector from the mold 2.

[0062] The mold 2 includes a mold body 21. The mold body 21 is provided with a plurality of positioning grooves 22 for accommodating the insulating connector 900. Each positioning groove 22 is provided with a plurality of bolts 23 for positioning the insulating connector 900. A limiting rod 24 is movably provided at the bottom of the mold body 21 below the bolts 23. When the limiting rod 24 is located at the bottom of the bolts 23, it can limit the bolts 23. After the limiting rod 24 is removed from below the bolts 23, the bolts 23 can fall off the mold body 21.

[0063] The groove wall of the positioning groove 22 is an arc-shaped contour surface. The arc-shaped contour surface is set in accordance with the outer periphery of the insulating joint 900, which facilitates the positioning of the insulating joint 900.

[0064] The head of bolt 23 faces downward and is located below the mold body 21, while the shank of bolt 23 faces upward and extends above the positioning groove 22. The mold body 21 has a first through hole 211 through which bolt 23 passes. A disc spring 25 and a nut 26 are sequentially arranged on the shank of the bolt, with the disc spring 25 located below the nut 26. The insulating connector 900 has a contour hole (not shown in the figure) that mates with bolt 23. The insulating connector 900 is placed into the positioning groove 22 through several bolts 23. First, the disc spring 25 is fitted onto the shank of bolt 23, and then the nut 26 is tightened onto the shank of bolt 23. The disc spring 25 elastically abuts against the upper surface of the insulating connector 900, thereby positioning the insulating connector 900 into the positioning groove 22.

[0065] To prevent the position of the insulating joint 900 from shifting due to the rotation of the bolt 23, several pairs of limiting blocks 28 are provided at the bottom of the mold body 21. Each pair of limiting blocks 28 is located on both sides of the head of the bolt 23. The limiting blocks 28 can restrict the bolt 23 from rotating around the vertical axis.

[0066] Mounting blocks 29 for mounting limit rods 24 are provided on the front and rear sides of the bottom of the mold body 21. The mounting blocks 29 extend vertically and are provided with mounting holes 291 for the limit rods 24 to pass through horizontally. One end of the limit rod 24 is provided with a handle 241 extending out of the side of the mold body 21. If the bolt 23 is damaged, the handle 241 of the limit rod 24 below the corresponding bolt 23 can be held to pull out the limit rod 24, and the bolt 23 will fall off. After the damaged bolt 23 falls off, a new bolt 23 is placed in place. Then, holding the handle 241, the limit rod 24 is inserted horizontally into the mounting holes 291 in the two mounting blocks 29. When the limit rod 24 is inserted into place, it contacts the lower end of the bolt 23, limiting the bolt 23 and preventing it from falling off.

[0067] To facilitate the demolding of the insulating joint 900, the mold body 21 has several ejector rods 212 that are movably mounted vertically within each positioning groove 22. Each positioning groove 22 has a countersunk hole 213 for mounting the ejector rods 212. Initially, the ejector rods 212 are located within the countersunk hole 213, with their upper ends flush with the bottom of the positioning groove 22. A lifting drive assembly 27 is located at the lower end of the mold body 21. When demolding is required, the lifting drive assembly 27 drives the ejector rods 212 upwards, thereby disengaging the insulating joint from the positioning groove 22 and achieving the demolding action. In this embodiment, the lifting drive assembly 27 includes a lifting cylinder 271 and a lifting plate 272 that is driven vertically by the lifting cylinder 271. In other embodiments, the lifting drive assembly 27 may have other structures, which are not limited here.

[0068] The loading / unloading station 200 is also equipped with a disassembly fixture 7 for disassembling the nuts 26 on the mold 2. The disassembly fixture 7 is slidably mounted on the frame 9. The disassembly fixture 7 includes a traveling trolley, a telescopic reel, and a pneumatic wrench. The pneumatic wrench is used to lock the nuts 26 on the mold 2. The telescopic reel can adjust the height of the pneumatic wrench, and the traveling trolley can move the pneumatic wrench horizontally. The disassembly fixture 7 can also be adjusted according to actual conditions, and the specific structure of the disassembly fixture is not limited here.

[0069] The heating system 3 includes a first gas chamber 31 and a second gas chamber 32 arranged vertically opposite each other, and a heating chamber 33 located between the first gas chamber 31 and the second gas chamber 32. A permanent flame hollow tube 35 is provided in the heating chamber 33 near the first gas chamber 31 and the second gas chamber 32. A gas pipeline 36 and an air pipeline 37 are connected in the first gas chamber 31 and the second gas chamber 32. The permanent flame hollow tube 35 is connected to the gas pipeline 36. A mixing heating plate 38 is provided in the first gas chamber 31 and the second gas chamber 32 to fully mix the gas and air.

[0070] The first gas chamber 31 and the second gas chamber 32 are connected by a first insulation plate 360. An ignition rod 34 is provided on the first insulation plate 360 ​​near the first gas chamber 31 and the second gas chamber 32, and the ignition rod 34 is located at one end of the pilot flame hollow tube 35.

[0071] The heating chamber 33 is also equipped with a heat-insulating door 320 to prevent heat loss and a lifting drive mechanism 39 to drive the heat-insulating door 320 to move up and down. Since the rotary drive component 13 drives the rotary table 12 to rotate, the mold 2 with the insulating joint is placed thereon rotates to the heating station 300 in sequence. Therefore, the heating chamber 33 is provided with three openings. Correspondingly, the heat-insulating door 320 is provided with three enclosures, and the enclosure closest to the rotary table 12 is provided with a first clearance opening to avoid the support arm 14. The three enclosures of the heat-insulating door 320, the first heat-insulating plate 360, the first air chamber 31 and the second air chamber 32 together form a closed heating chamber 33, in which the object is heated.

[0072] The gas pipeline 36 includes a main gas pipeline 361, a number of first gas branch pipes 362 connected to the upper end of the main gas pipeline 361, and a number of second gas branch pipes 363 connected to the lower end of the main gas pipeline 361.

[0073] The air duct 37 includes a main air duct 371, a plurality of first air branch pipes 372 connected to the upper end of the main air duct 371, and a plurality of second air branch pipes 373 connected to the lower end of the main air duct 371.

[0074] Several first gas branch pipes 362 and several first air branch pipes 372 are simultaneously connected to the first gas chamber 31, and several second gas branch pipes 363 and several second air branch pipes 373 are simultaneously connected to the second gas chamber 32.

[0075] Each of the hollow propellant tubes 35 is connected to the main gas pipe 361 via a third gas branch pipe 368. Gas enters the hollow propellant tube 35 through the third gas branch pipe 368. The tube wall of the hollow propellant tube 35 is covered with several first gas outlet holes. The gas inside the hollow propellant tube 35 enters the heating chamber 33 through the first gas outlet holes. The outer periphery of the hollow propellant tube 35 is always in a combustion state, ensuring that the heating chamber 33 is always in a combustion state, making the combustion in the heating chamber 33 more complete. Moreover, two hollow propellant tubes 35 are arranged at the top and bottom, respectively close to the first gas chamber 31 and the second gas chamber 32, which can make the gas in the first gas chamber 31 and the second gas chamber 32 more complete, ensuring heating stability and the performance of the insulation joint.

[0076] The mixing heating plate 38 has a mixing cavity 381 inside, which mixes air and fuel gas to form a mixed gas. One side of the mixing cavity 381 has a first air inlet 382 for air and fuel gas to enter, and the opposite side has several small air outlet holes 383 for the mixed gas to exit. These small air outlet holes 383 are evenly distributed across the surface of the mixing heating plate 38. The mixing heating plate 38 is made of ceramic, which is heat-resistant.

[0077] The first gas chamber 31 and the second gas chamber 32 are vertically opposite each other. Correspondingly, the mixing heating plate 38 in the first gas chamber 31 and the mixing heating plate 38 in the second gas chamber 32 are also vertically opposite each other. The small air outlet holes 383 of the two mixing heating plates 38 are arranged vertically opposite each other. Each first gas branch pipe 362 and each corresponding first air branch pipe 372 are simultaneously connected to the first air inlet 382. That is, air and gas enter the mixing cavity 381 simultaneously through the first air inlet 382. Air and gas are fully mixed in the mixing cavity 381 to form a mixed gas. The mixed gas is simultaneously ejected from several small air outlet holes 383. After the ignition rod 34 is ignited, the flame spreads to the entire surface of the mixing heating plate 38. The heat on the surface of the mixing heating plate 38 is uniform. The lower surface of the mixing heating plate 38 in the first gas chamber 31 has a burning flame that heats the upper surface of the insulating joint. The upper surface of the mixing heating plate 38 in the second gas chamber 32 has a burning flame that heats the lower surface of the insulating joint. This ensures that the outer periphery of the object to be heated is uniformly heated and that the performance of the insulating joint is guaranteed.

[0078] Both the first gas chamber 31 and the second gas chamber 32 are provided with a second insulation plate 370 on which a mixing heating plate 38 is installed. The second insulation plate 370 is provided with a second air inlet 3701 that communicates with the first air inlet 382. The second air inlet 3701 is connected to the gas pipeline 36 and the air pipeline 37.

[0079] In this embodiment, six mixing heating plates 38 are provided in both the first air chamber 31 and the second air chamber 32. In other embodiments, the number of mixing heating plates 38 can be adjusted according to the actual situation.

[0080] At the inlet of the main gas pipe 361, a gas pressure regulating valve 364, a gas pressure gauge 365, a gas pressure switch 366, and a gas shut-off valve 367 are sequentially installed. The gas pressure regulating valve 364 is used to regulate the pressure of the incoming gas. The pressure value is displayed by the gas pressure gauge 365. When the gas inlet pressure reaches the predetermined value, the gas pressure switch 366 automatically opens. The automatic control of the gas pressure regulating valve 364, the gas pressure gauge 365, and the gas pressure switch 366 can accurately control the input of natural gas and ensure uniform combustion. In the event of a equipment malfunction, the gas shut-off valve 367 operates to promptly disconnect the gas supply to the gas pipe 36, preventing gas leaks or explosions.

[0081] An air filter 374 and an air supply pump 375 are connected sequentially at the inlet of the main air pipe 371. The air filter 374 filters out particulate matter or other substances in the air to ensure the purity of oxygen. The air supply pump 375 inputs the air from the air filter 374 into the main air pipe 371 to ensure the oxygen content in the main air pipe 371.

[0082] The heating chamber 33 is equipped with thermocouples 330 for temperature detection near the first gas chamber 31 and the second gas chamber 32. If the thermocouples 330 detect that the temperature inside the furnace is too high or too low, they will send a signal to control the gas input of the gas pipeline 36 and the air pipeline 37. The gas pressure regulating valve 364 will reduce or increase the gas intake, and the air supply pump 375 will also reduce or increase the air intake simultaneously. That is, by reducing or increasing the concentration of the mixed gas in the heating chamber 33, the temperature inside the heating chamber 33 will be reduced or increased. This allows for precise control of the temperature inside the heating chamber 33, thereby ensuring the uniformity and stability of heating.

[0083] A detection device (not shown in the figure) for detecting the CO concentration inside the heating chamber 33 is also installed on the outside of the heating chamber 33. The heating chamber 33 is also connected to a waste gas discharge device 350, which is located above the first gas chamber 31. The detection device is prior art and can be designed using existing technology, so it will not be described in detail here. The waste gas discharge device 350 includes a waste gas discharge pipe 3501 connected at one end to the heating chamber 33 and a second blower 3502 connected at the other end of the waste gas discharge pipe 3501. If the detection device detects that the CO concentration inside the heating chamber 33 exceeds the standard, the second blower 3502 operates to discharge the waste gas inside the heating chamber 33 to the exhaust gas treatment device (not shown in the figure) through the waste gas discharge pipe 3501.

[0084] Because the production process of insulating joints requires multiple heating steps to ensure the quality of the insulating joints and to guarantee the uniformity and stability of the heating process, the residual heat of the heating system can be used for secondary heating to further solidify the insulating joints. Using residual heat for heating is more energy-efficient and environmentally friendly. Therefore, the heating chamber 33 is also connected to a waste heat recovery device 340, which transfers the waste heat in the heating chamber 33 to the secondary heating station 400 for secondary heating. The waste heat recovery device 340 includes a first blower 3401, a first conveying pipe 3402 connecting the first blower 3401 and the heating chamber 33, and a second conveying pipe 3403 and a third conveying pipe 3404 connecting the first blower 3401 and the secondary heating device 5.

[0085] The secondary heating device 5 includes a first insulation cover 51, a second insulation cover 52, and a drive mechanism 55 for aligning and closing the first insulation cover 51 and the second insulation cover 52. After the first insulation cover 51 and the second insulation cover 52 are closed, a heating space is formed inside to accommodate the object to be heated. The first insulation cover 51 is connected to the second conveying pipe 3403, and the second insulation cover 52 is connected to the third conveying pipe 3404. Both the first insulation cover 51 and the second insulation cover 52 are provided with openings, and the second conveying pipe 3403 and the third conveying pipe 3404 are connected to the openings so that the second conveying pipe 3403 and the third conveying pipe 3404 are in communication with the heating space. The second conveying pipe 3403 and the third conveying pipe 3404 transport the residual heat in the heating system 3 to the heating space for secondary heating of the insulating joint. The secondary heating device 5 is convenient for heating, directly transporting heat through the upper and lower conveying pipes, making the secondary heating highly efficient; moreover, the structure of the conveying pipes is simple, which not only makes the heat transfer efficient but also facilitates subsequent maintenance.

[0086] Since the insulating joint 900, the mold 2 and the support arm 14 rotate together into the heating space during actual heating, the first heat insulation cover 51 is provided with a second clearance opening 513 to avoid the support arm 14.

[0087] The drive mechanism 55 is mounted on the frame 9. The drive mechanism 55 includes a first drive member 551, a moving frame 552 driven horizontally by the first drive member 551, a second drive member 553 mounted on the moving frame 552, and a mounting bracket 554 driven vertically by the second drive member 553. The mounting bracket 554 is detachably mounted on the first insulation cover 51 via a first fastener 555. The drive mechanism 55 can drive the first insulation cover 51 to move vertically and horizontally to align with and cover the second insulation cover 52, forming a heating space to accommodate the object to be heated. The second insulation cover 52 is detachably mounted on the base 56 via a second fastener. In this embodiment, the first insulation cover 51 is movable, while the second insulation cover 52 is fixed. In other embodiments, the first insulation cover 51 is fixed, and the second insulation cover 52 is movable. The drive mechanism 55 can drive the second insulation cover 52 to move vertically and horizontally to align with and cover the first insulation cover 51, forming a heating space to accommodate the object to be heated. In another embodiment, both the first heat insulation cover 51 and the second heat insulation cover 52 are movable, and the other structures are basically the same. An additional drive mechanism 55 is added, and the added drive mechanism 55 is connected to the second heat insulation cover 52 to drive the second heat insulation cover 52 to move.

[0088] To ensure the stability of the up-and-down movement of the first insulation cover 51 and the mounting bracket 554, a guide component 559 is provided between the movable frame 552 and the mounting bracket 554.

[0089] The cooling device 6 includes an air-cooling mechanism 61 and a water-cooling mechanism 62. The air-cooling mechanism 61 is located above the water-cooling mechanism 62. There is an activity space for placing the object to be cooled between the air-cooling mechanism 61 and the water-cooling mechanism 62. That is, the insulating joint and the mold 2 for forming the insulating joint are located between the air-cooling mechanism 61 and the water-cooling mechanism 62. The air-cooling mechanism 61 blows downward to cool the insulating joint, and the water-cooling mechanism 62 sprays water upward to cool the mold 2. The cooling actions are carried out simultaneously from top and bottom, but they do not interfere with each other, and the cooling efficiency can also be improved.

[0090] The air-cooling mechanism 61 includes an air inlet support 611, an air inlet pipe 613 arranged at the upper end of the air inlet support 611, and a plurality of air-cooling parts 612 arranged at the bottom of the air inlet support 611. The air-cooling mechanism 61 is slidably arranged on a frame 9 in the front and back directions. The air-cooling parts 612 extend horizontally. A plurality of air outlet holes 614 are arranged along the length direction at the bottom of each air-cooling part 612. An air-cooling channel that is mutually connected is arranged inside the air inlet support 611 and the air-cooling parts 612, and the air-cooling channel is mutually connected with the air inlet pipe 613 and the air outlet holes 614. The cold air blown out from the air outlet holes 614 cools the insulating joint.

[0091] In this embodiment, there are two air-cooling parts 612 arranged opposite to each other on the left and right. In other embodiments, the number of air-cooling parts 612 is set according to the actual situation and is not limited here.

[0092] The water-cooling mechanism 62 includes a water tank 621 for containing cooling water, a high-pressure water spray pipe 622 arranged inside the water tank 621 and spraying water upward, and a first circulating water pump assembly 623 connected to the high-pressure water spray pipe 622.

[0093] The high-pressure water spray pipe 622 includes a first connecting pipe 6221 and a water spray pipe 6222 arranged at the end of the first connecting pipe 6221. A plurality of water outlet holes 6223 are arranged above the water spray pipe 6222. The water outlet holes 6223 spray water upward to cool the bottom of the mold 2. In this embodiment, the water spray pipe 6222 has a "day" - shaped structure so as to be able to spray water on the mold 2 more fully for cooling. In other embodiments, the water spray pipe 6222 can be set to other structures and is not limited here.

[0094] The first circulating water pump assembly 623 is located outside the water tank 621. The first circulating water pump assembly 623 includes a first inlet pipe 6231 connected to the first connecting pipe 6221 and a first circulating water pump 6232 connected to the first inlet pipe 6231. In order to realize the recycling of cooling water, the water tank 621 is connected to a first outlet pipe 6233 below the first inlet pipe 6231. The other end of the first outlet pipe 6233 is connected to the first circulating water pump 6232. That is, the first circulating water pump 6232 works so that the water in the water tank 621 flows into the first circulating water pump 6232 through the first outlet pipe 6233, and then flows into the first inlet pipe 6231 from the first circulating water pump 6232. Finally, it is sprayed upward through the spray pipe 6222 to cool the mold 2. The first outlet pipe 6233, the first circulating water pump 6232 and the first inlet pipe 6231 can realize the recycling of cooling water and reduce production costs.

[0095] The water tank 621 has an inlet 6211 on one side and an outlet 6212 on the other side. Both the inlet 6211 and outlet 6212 are equipped with a first valve 6213. When clean cooling water needs to be added to the water tank 621, the first valve 6213 at the inlet 6211 opens and cooling water is added. Once the cooling water reaches the set level, the first valve 6213 at the inlet 6211 closes. When it is necessary to drain the cooling water from the water tank 621, the first valve 6213 at the outlet 6212 opens and drains the cooling water. When the water-cooling mechanism 62 is performing water spray cooling, both the first valves 6211 at the inlet 6211 and the outlet 6212 are closed.

[0096] Inside the water tank 621, below the spray pipe 6222, is a filter screen 624 used to filter out residue from the insulating joint and mold 2. When the filter screen 624 is covered with a certain amount of residue, it is removed, cleaned, and then placed back into the water tank 621 to continue the residue filtration process. The water tank 621 is equipped with a water level sensor 627 and a temperature sensor 626. The water level sensor 627 detects the water level in the water tank 621, and the temperature sensor 626 detects the water temperature in the water tank 621.

[0097] After being sprayed with water multiple times by the water spray pipe 6222, the cooling water absorbs heat, causing the temperature inside the water tank 621 to gradually rise. If the temperature inside the water tank 621 is higher than the set temperature, the cooling efficiency will be reduced. To solve this problem, a cooling water replacement mechanism 625 is connected to the water tank 621. The cooling water replacement mechanism 625 draws the high-temperature cooling water from the water tank 621 to the cooling tower (not shown in the figure) for cooling. After cooling to the set temperature, the low-temperature cooling water is then drawn back into the water tank 621.

[0098] The cooling water replacement mechanism 625 includes a second outlet pipe 6251 and a second inlet pipe 6252 connected to the water tank 621. The second outlet pipe 6251 is located below the second inlet pipe 6252. The other ends of the second outlet pipe 6251 and the second inlet pipe 6252 are connected to the second circulating water pump 6253. A third outlet pipe 6254 is connected in the middle of the second inlet pipe 6252. A first solenoid valve 6255 is connected to the second inlet pipe 6252 near the water tank 621, and a second solenoid valve 6256 is connected to the second circulating water pump 6253. The third outlet pipe 6254 is located between the first solenoid valve 6255 and the second solenoid valve 6256.

[0099] The cooling station 500 is also equipped with a lifting fixture 8, which is used to disassemble and assemble mold 2. If the mold is found to be abnormal or damaged after cooling, the lifting fixture 8 is used to remove or replace the new mold 2. The lifting fixture 8 is slidably set on the frame 9. The specific structure of the lifting fixture 8 can be set according to the actual situation and is not limited here.

[0100] When using the automatic forming equipment 100 for insulating joints provided in this solution, the mold 2 is first positioned on the positioning piece 11 on the loading / unloading station 200. Then, the insulating joint 900 is positioned inside the mold 2. The insulating joint 900 is placed into the positioning groove 22 through several bolts 23. First, a disc spring 25 is fitted onto the thread of the bolt 23. Then, a nut 26 is tightened onto the thread of the bolt 23. The disc spring 25 elastically abuts against the upper surface of the insulating joint 900, thereby positioning the insulating joint 900 into the positioning groove 22. The rotation drive 13 drives the rotary table 12 to rotate, causing the mold 2 to rotate with the insulating joint 900 to the heating station 300. The insulating joint 900 rotates into the heating chamber 33. The lifting drive mechanism 39 drives the heat preservation door 3. The temperature drops to 20°C, igniting the ignition rod 34. The flame spreads across the entire surface of the mixing heating plate 38, ensuring uniform heat distribution. The lower surface of the mixing heating plate 38 in the first chamber 31 is heated by the burning flame, which in turn heats the upper surface of the insulating joint. Similarly, the upper surface of the mixing heating plate 38 in the second chamber 32 is heated by the burning flame, further heating the lower surface of the insulating joint. This ensures uniform heating of the outer periphery of the object to be heated, achieving primary heating of the insulating joint 900. Simultaneously, the waste heat recovery device 340 transfers the waste heat from the heating chamber 33 to the secondary heating station 400 for secondary heating. The rotary drive 13 drives the rotary table 12 to rotate, causing the mold 2, carrying the insulating joint 900, to rotate onto the secondary heating station 400. 900 and mold 2 rotate together to be directly above the second insulation cover 52. Since the insulating adhesive melts and solidifies when the insulating joint 900 is heated on the heating system 3, to ensure the effectiveness of the secondary heating, the nut 26 can be tightened again before the secondary heating. The first driving component 551 drives the moving frame 552 to move the second driving component 553 to be directly above the second insulation cover 52. The second driving component 553 drives the first insulation cover 51 to descend and align with the second insulation cover 52 to form a heating space. The second conveying pipe 3403 and the third conveying pipe 3404 transport the residual heat from the heating system 3 to the heating space for secondary heating of the insulating joint. After the set time, the first driving component 551 and the second driving component 553 work together to drive the first heat insulation cover 51 to move away from the second heat insulation cover 52. The rotation driving component 13 drives the rotary table 12 to rotate, causing the mold 2 with the insulating joint 900 to rotate onto the cooling station 500. The insulating joint 900 and the mold 2 rotate together to the top of the water cooling mechanism. The air cooling mechanism 61 and the water cooling mechanism 62 work simultaneously. The air cooling mechanism 61 blows air downwards to cool the insulating joint, and the water cooling mechanism 62 sprays water upwards to cool the mold. The specific air cooling process of the air cooling mechanism 61 is as follows: cold air is introduced into the air inlet pipe 613, and the cold air enters the air outlet 614 from the air cooling channel. The air cooling component 612 blows air from one end to the middle to cool the insulating joint.The specific water cooling process of the water cooling mechanism 62 is as follows: the first circulating water pump 6232 operates, causing water in the water tank 621 to flow into the first circulating water pump 6232 through the first outlet pipe 6233, and then into the first inlet pipe 6231. Finally, the water is sprayed upwards through the spray pipe 6222 to cool the mold. After cooling, the rotary drive component 13 drives the rotary table 12 to rotate, causing the mold 2, carrying the insulating connector 900, to rotate onto the loading / unloading station 200. The formed insulating connector is removed from the mold 2, and then a new insulating connector is placed on top for the next round of forming operations.

[0101] This embodiment also provides an automatic forming method for insulating joints, which is based on the automatic forming equipment for insulating joints as described above, and includes the following steps:

[0102] S1. Position the insulating connector 900 to be heated on the mold 2 at the loading / unloading station 200;

[0103] S2. The rotating platform 1 drives the mold 2 and the insulating joint 900 to be heated to rotate to the heating station 30, so that the mold 2 and the insulating joint 900 to be heated are located in the heating system 3, and the heating system 3 heats the insulating joint 900 once.

[0104] S3. The rotating platform 1 drives the mold 2 and the insulating joint 900 after the first heating to rotate to the secondary heating station 400, so that the mold 2 and the insulating joint 900 to be heated are located in the secondary heating device 5, and the secondary heating device 5 performs secondary heating on the insulating joint 900.

[0105] S4. The rotating platform 1 drives the mold 2 and the insulating joint 900 after secondary heating to rotate to the cooling station 500, so that the mold 2 and the insulating joint 900 to be heated are located in the cooling device 6, and the cooling device 6 cools the insulating joint 900 and the mold 2.

[0106] S5. The rotating platform 1 drives the mold 2 and the cooled insulating connector 900 to rotate to the loading and unloading station 200, and removes the formed insulating connector 900.

[0107] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. An automatic forming equipment for insulating joints, characterized in that, It includes: A rotating platform is provided with several molds for positioning insulating joints, and loading and unloading stations, heating stations, secondary heating stations and cooling stations are arranged in sequence around the rotating platform. A heating system is installed at the heating station to heat the insulated joint. The heating system includes a first gas chamber and a second gas chamber arranged vertically opposite each other, and a heating cavity located between the first gas chamber and the second gas chamber. A hollow tube with a permanent flame is installed in the heating cavity near the first gas chamber and the second gas chamber. A gas pipeline and an air pipeline are connected to the first gas chamber and the second gas chamber, respectively. The hollow tube with the permanent flame is connected to the gas pipeline. A mixing heating plate is installed in both the first gas chamber and the second gas chamber to fully mix the gas and air. The mixing heating plate has a mixing cavity inside to mix the air and gas to form a mixed gas. A first air inlet for air and gas to enter is provided on one side of the mixing cavity, and several small air outlets for the mixed gas to exit are provided on the opposite side. A secondary heating device is installed at the secondary heating station to perform secondary heating on the insulating joint; A cooling device is installed at the cooling station to cool the insulating joint and the mold; The waste heat recovery device transfers the waste heat from the heating system to the secondary heating device for reuse.

2. The automatic forming equipment for insulating joints as described in claim 1, characterized in that: The mold includes a mold body, which is provided with a plurality of positioning grooves for accommodating insulating joints. Each positioning groove is provided with a plurality of bolts for positioning insulating joints. A limiting rod is movably provided at the bottom of the mold body below the bolts. When the limiting rod is located at the bottom of the bolt, it can limit the bolt. After the limiting rod is moved away from below the bolt, the bolt can fall off the mold body.

3. The automatic forming equipment for insulating joints as described in claim 1, characterized in that: The first air chamber and the second air chamber are connected by a first insulation plate. The first insulation plate is provided with an ignition rod near the first air chamber and the second air chamber, and the ignition rod is located at one end of the permanent flame hollow tube. The side of the heating chamber is also provided with an insulation door to prevent heat loss and a lifting drive mechanism to drive the insulation door to move up and down.

4. The automatic forming equipment for insulating joints as described in claim 1, characterized in that: Both the first and second air chambers are provided with a second insulation plate on which the mixing heating plate is installed. The second insulation plate is provided with a second air inlet that communicates with the first air inlet. The second air inlet is connected to the gas pipeline and the air pipeline.

5. The automatic forming equipment for insulating joints as described in claim 1, characterized in that: The waste heat recovery device includes a first blower, a first conveying pipe connected between the first blower and the heating chamber, and a second and a third conveying pipe connected between the first blower and the secondary heating device.

6. The automatic forming equipment for insulating joints as described in claim 5, characterized in that: The secondary heating device includes a first heat insulation cover, a second heat insulation cover, and a driving mechanism for aligning and closing the first heat insulation cover and the second heat insulation cover. After the first heat insulation cover and the second heat insulation cover are closed, a heating space is formed inside to accommodate the object to be heated. The first heat insulation cover is connected to the second conveying pipe, the second heat insulation cover is connected to the third conveying pipe, and both the second conveying pipe and the third conveying pipe are connected to the heating space.

7. The automatic forming equipment for insulating joints as described in claim 1, characterized in that: The cooling device includes an air-cooling mechanism and a water-cooling mechanism, with the air-cooling mechanism located above the water-cooling mechanism. The air-cooling mechanism includes an air inlet bracket and several air-cooling components disposed at the bottom of the air inlet bracket, with several air outlet holes at the bottom of each air-cooling component. The water-cooling mechanism includes a water tank for containing cooling water, a high-pressure water spray pipe disposed inside the water tank and spraying water upwards, and a first circulating water pump assembly connected to the high-pressure water spray pipe.

8. The automatic forming equipment for insulating joints as described in claim 7, characterized in that: The first circulating water pump assembly includes a first inlet pipe connected to the high-pressure water spray pipe and a first circulating water pump connected to the first inlet pipe. The water tank is connected to a first outlet pipe below the first inlet pipe, and the other end of the first outlet pipe is connected to the first circulating water pump.

9. The automatic forming equipment for insulating joints as described in claim 7, characterized in that: The water tank is connected to a cooling water replacement mechanism, which includes a second outlet pipe and a second inlet pipe connected to the water tank. The second outlet pipe is located below the second inlet pipe. The other ends of the second outlet pipe and the second inlet pipe are connected to a second circulating water pump. A third outlet pipe is connected to the middle of the second inlet pipe. A first solenoid valve is connected to the second inlet pipe near the water tank, and a second solenoid valve is connected to the second circulating water pump. The third outlet pipe is located between the first solenoid valve and the second solenoid valve.

10. An automatic forming method for insulating joints, which is based on the automatic forming equipment for insulating joints as described in any one of claims 1 to 9, characterized in that, It includes the following steps: S1. Position the insulating connector to be heated on the mold at the loading and unloading station; S2. The rotating platform drives the mold and the insulating joint to be heated to rotate to the heating station, so that the mold and the insulating joint to be heated are located in the heating system, and the heating system heats the insulating joint once. S3. The rotating platform drives the mold and the insulating joint after the first heating to rotate to the secondary heating station, so that the mold and the insulating joint to be heated are located in the secondary heating device, and the secondary heating device performs secondary heating on the insulating joint; S4. The rotating platform drives the mold and the insulating joint after secondary heating to rotate to the cooling station, so that the mold and the insulating joint to be heated are located in the cooling device, and the cooling device cools the insulating joint and the mold. S5. The rotating platform drives the mold and the cooled insulating joint to rotate to the loading and unloading station, and removes the formed insulating joint.

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