Hot air edge sealing device

Abstract

The present invention discloses an innovative hot air edge sealing device, comprising a gas tank, a triplex, an air flow meter and a plurality of rubber hoses, wherein the input end of the gas tank is connected to the triplex through a rubber hose, and a ball valve is provided between the gas tank and the triplex. The present invention passes compressed gas into a heating device and instantly heats the gas to an appropriate temperature under the heating of an electric heater. The high-temperature air passes into the cavity of a nozzle device and is ejected from an air jet hole to heat-seal the edge band being processed. The heat energy generated by the high-temperature, high-speed, and large-flow compressed air quickly melts the material functional layer of the edge band, and then the edge band is pressed onto the side of the workpiece through a pressure wheel area. There is no need to use hot melt adhesive, so that seamless bonding between the edge band and the workpiece is achieved, and the glue line generated by the traditional edge sealing process is not visible. The functional layer of the edge band has good adhesion to the plate, a high degree of integration, and significantly higher bonding strength than the traditional process. The problem of debonding and falling in the traditional process will not occur, and it is more environmentally friendly.

Description

Technical Field

[0001] The present invention relates to the technical field of hot air edge sealing, and in particular to a hot air edge sealing device. Background Art

[0002] Edge banding machines are used to bond edge banding to the sides of wooden boards. Existing technology typically uses a hot melt adhesive cartridge to melt hot melt adhesive, which is then applied to the edge banding via a glue roller to meet the bonding requirements between the edge banding and the wooden board.

[0003] In the traditional production process, glue leakage will occur during the operation of the glue shaft. The overflowed glue will spread to the frame and is difficult to clean. The glue pot needs to be cleaned frequently. When impurities enter the glue coating device, uneven glue coating will occur, resulting in a high scrap rate and greatly increased production costs.

[0004] Therefore, it is necessary to invent a hot air edge sealing device to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a hot air edge sealing device, which passes compressed gas into a heating device and instantly heats the gas to an appropriate temperature under the heating of an electric heater. The high-temperature air passes into the interior of the cavity and is ejected from the air jet hole to heat-seal the edge banding strip being processed. The heat energy generated by the high-temperature, high-speed, and large-flow compressed air quickly melts the material functional layer of the edge banding strip, and then the edge banding strip is pressed to the side of the workpiece through the pressure wheel area. There is no need to use hot melt adhesive, so as to achieve seamless bonding between the edge banding strip and the workpiece, thereby solving the above-mentioned shortcomings in the technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hot air edge sealing device, comprising a gas storage tank, a triplet, an air flow meter and several rubber hoses, the input end of the gas storage tank is connected to the triplet through a rubber hose, and a ball valve is provided between the gas storage tank and the triplet, the output end of the gas storage tank is connected to the air flow meter through a rubber hose, the output end of the air flow meter is connected to a first air distributor block, the output end of the first air distributor block is divided into four air outlets, the first air outlet is connected to a connecting hose through a joint, and a large flow regulating valve is provided on the connecting hose, the second air outlet is connected to a first air guide hose through a joint, and a small flow regulating valve is provided on the first air guide hose, the output end of the connecting hose is provided with a first solenoid valve, a second air guide hose is provided between the third air outlet and the first solenoid valve, and a joint is also provided at the connection between the second air guide hose and the third air outlet and the pilot port of the first solenoid valve, the fourth air outlet is connected to the third air guide hose, and the output end of the third air guide hose is connected to the second solenoid valve, the output end of the third air guide hose is connected to the Connected to the "P" port of the second solenoid valve, the outlet of the large flow regulating valve is connected to the "P" interface of the first solenoid valve through a joint, and the outlet of the small flow regulating valve is connected to the "R" interface of the first solenoid valve through a joint. The output end of the first solenoid valve is connected to a heating device through a rubber hose and a joint. The heating device includes a heating cylinder, and an electric heater is provided inside the heating cylinder. A first temperature sensor and a second temperature sensor are provided inside the heating device. The output end of the heating cylinder is connected to a nozzle assembly through a copper tube and a joint. A guide exhaust pipe is provided on one side of the top of the nozzle assembly. The top of the guide exhaust pipe is connected to a pneumatic pilot stop valve through a copper tube. The outlet of the pneumatic pilot stop valve is connected to a vacuum exhaust valve through a joint and a steel pipe. The outlet of the vacuum exhaust valve is provided with a muffler. The first output port of the second gas distributor block is connected to the fourth gas guide hose, and the other end of the fourth gas guide hose is connected to the vacuum exhaust valve through a joint. The second output port of the second gas distributor block is connected to the fifth gas guide hose, and the other end of the fifth gas guide hose is connected to the pilot port of the pneumatic pilot stop valve through a joint;

[0007] The nozzle assembly includes a nozzle body, a cavity is opened inside the nozzle body, a hot air inlet and an exhaust port are provided at the top of the nozzle body, the hot air inlet and the exhaust port both pass through the cavity, and the hot air inlet and the exhaust port are respectively connected to the heating cylinder and the guide exhaust pipe, a third temperature sensor is provided on the top of the nozzle body, and the third temperature sensor detection probe extends into the cavity, a plurality of evenly distributed jet holes are opened on the front of the nozzle body, and the jet holes pass through the cavity.

[0008] Preferably, a controller for controlling the operation of the device is further included, the connection end of the controller is electrically connected to a PLC, the connection end of the PLC is electrically connected to a temperature control module for adjusting the electric heater, the output end of the PLC is provided with an I / O module, the first temperature sensor, the second temperature sensor and the third temperature sensor are all electrically connected to the temperature control module, and the electric heater, the first solenoid valve, the second solenoid valve and the pneumatic pilot stop valve are all electrically connected to the I / O module of the PLC.

[0009] Preferably, the air flow meter is detachably mounted on the rubber hose, a probe of the air flow meter extends into the interior of the rubber hose, and the air flow meter is electrically connected to the PLC input module.

[0010] Preferably, a display screen is further included, which is electrically connected to the PLC and is used to display the monitoring values ​​of the first temperature sensor, the second temperature sensor, the third temperature sensor and the air flow meter.

[0011] Preferably, the muffler is detachably connected to the vacuum exhaust valve via a joint.

[0012] Preferably, the nozzle assembly also includes a baffle and an adjustment plate, an adjustment slot is provided between the baffle and the nozzle body, an adjustment plate is slidably connected inside the adjustment slot, the baffle and the adjustment plate both match the heat-sealed edge strip, two symmetrically distributed strip grooves are opened on the surface of the adjustment plate, positioning waist-shaped guide bosses are provided on both sides of the top of the nozzle body, the thickness of the positioning waist-shaped guide bosses is greater than the thickness of the adjusting plate, and the two positioning waist-shaped guide bosses match the two strip grooves respectively, and one end of the two positioning waist-shaped guide bosses passes through and is threadedly connected with a first bolt, the baffle is fixed to the nozzle body by a first bolt, the baffle is provided with a threaded hole at a position between the two positioning waist-shaped guide bosses, the threaded hole is threaded with a second bolt, and the adjustment plate is fixed to the nozzle body by a second bolt.

[0013] Preferably, a concave surface is provided on one side of the adjustment plate, and a convex surface is provided on one end of the nozzle body, and the convex surface matches the concave surface.

[0014] Preferably, first connecting holes are provided on both sides of the top of the adjustment plate, a connecting plate is fixedly connected to the bottom end of the nozzle body, and a second connecting hole is provided on the surface of the connecting plate.

[0015] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0016] By passing compressed gas into the heating device and heating the gas to an appropriate temperature instantly under the heating of an electric heater, the high-temperature air is passed into the cavity and ejected from the air jet hole to heat-seal the edge banding being processed. The heat energy generated by the high-temperature, high-speed, and large-flow compressed air quickly melts the material functional layer of the edge banding, and then the edge banding is pressed tightly to the side of the workpiece through the pressure wheel area. No hot melt adhesive is required, and seamless bonding between the edge banding and the workpiece is achieved. The glue line produced by traditional edge banding is not visible. The functional layer of the edge banding has good adhesion to the board, with a high degree of integration and significantly higher bonding strength than traditional processes. The edge banding produced by traditional processes will not debond and fall off, and it is more environmentally friendly.

[0017] By controlling the gas flow rate and volume, the temperature of the output air is adjusted, and the specific temperature value is displayed in real time on the display screen, which has good visualization and controllability, high intelligence, and improves the safety of edge banding operations. The gas can be conducted from the guide exhaust pipe and rubber hose to the vacuum exhaust valve and discharged from the muffler, and the noise during gas discharge can be eliminated to ensure a quiet working environment.

[0018] The stable pressure when the gas tank is inflated is ensured by the triple piece. The device is easy to install, and the baffle and the nozzle body are fixed by bolts. The nozzle body can slide on the adjustment plate and is tightened by bolts to facilitate position adjustment. The system can be used alone or installed on any conventional edge banding machine. Its original configuration is intact and does not affect the control of the original machine. You can choose to use the original glue edge banding or hot air edge banding. Compared with traditional glue sealing and laser edge banding, it has low cost, less maintenance work, strong applicability, and reduces the cost of equipment renewal and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a left side view of the present invention;

[0022] Figure 3 is a system control flow chart of the present invention;

[0023] Figure 4 Schematic diagram of the structure of the nozzle assembly of the present invention;

[0024] Figure 5 It is a rear view of the nozzle assembly of the present invention;

[0025] Figure 6 It is a left side view of the nozzle assembly of the present invention;

[0026] Figure 7 It is a top view of the nozzle assembly of the present invention.

[0027] Description of reference numerals:

[0028] 1 Gas tank, 2 Triple, 3 Ball valve, 4 First gas distributor, 5 Connecting hose, 6 First solenoid valve, 7 High flow regulating valve, 8 First air guide hose, 9 Low flow regulating valve, 10 Second air guide hose, 11 Heating device, 12 First temperature sensor, 13 Nozzle assembly, 131 Nozzle body, 132 Hot air inlet, 133 Exhaust port, 134 Third temperature sensor, 135 Jet hole, 136 Baffle, 137 Adjustment notch, 138 Adjustment plate, 139 First connecting hole, 1310 Second connecting hole, 1311 Positioning waist-shaped guide boss, 1312 Strip groove, 1313 First bolt, 1314 Card slot, 1315 Card block, 1316 Second bolt, 14 Guide exhaust pipe, 15 Vacuum exhaust valve, 16 Second gas distributor, 17 Second solenoid valve, 18 Third air guide hose, 19 Fourth air guide hose, 20 Pneumatic pilot stop valve, 21 Fifth air guide hose, 22 PLC, 23 electric heater, 24 air flow meter, 25 display screen, 26 muffler, 27 second temperature sensor. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] The present invention provides Figure 1-7The hot air edge sealing device shown in the figure includes an air tank 1, a triple piece 2, an air flow meter 24 and several rubber hoses. The input end of the air tank 1 is connected to the triple piece 2 through a rubber hose. The triple piece 2 ensures a stable pressure when the air tank 1 is inflated, and a ball valve 3 is provided between the air tank 1 and the triple piece 2. The ball valve 3 is opened during inflation and closed after inflation is completed. The output end of the air tank 1 is connected to the air flow meter 24 through a rubber hose. The output end of the air flow meter 24 is connected to a first air distributor 4. The output end of the first air distributor 4 is divided into four air outlets. The first air outlet is connected to a joint. The connecting hose 5 is connected, and a large flow regulating valve 7 is provided on the connecting hose 5. The second gas outlet is connected to the first gas hose 8 through a joint, and a small flow regulating valve 9 is provided on the first gas hose 8. The output end of the connecting hose 5 is provided with a first solenoid valve 6. A second gas hose 10 is provided between the third gas outlet and the first solenoid valve 6, and a joint is also provided at the connection between the second gas hose 10 and the third gas outlet and the pilot port of the first solenoid valve 6. The fourth gas outlet is connected to the third gas hose 18, and the output end of the third gas hose 18 is connected to the second solenoid valve 17. The output end of the third gas hose 18 is connected to the The connector is connected to the "P" port of the second solenoid valve 17, the outlet of the large flow regulating valve 7 is connected to the "P" interface of the first solenoid valve 6 through a connector, and the outlet of the small flow regulating valve 9 is connected to the "R" interface of the first solenoid valve 6 through a connector. The output end of the first solenoid valve 6 is connected to the heating device 11 through a rubber hose and the connector. The heating device includes a heating cylinder, and an electric heater 23 is provided inside the heating cylinder. The first temperature sensor 12 and the second temperature sensor 27 are provided inside the heating device 11. The output end of the heating cylinder is connected to the nozzle assembly 13 through a copper tube and the connector. One side of the top of the nozzle assembly 13 A guide exhaust pipe 14 is provided, the top of which is connected to a pneumatic pilot stop valve 20 via a copper tube. The outlet of the pneumatic pilot stop valve 20 is connected to a vacuum exhaust valve 15 via a joint and a steel pipe. A muffler 26 is provided at the outlet of the vacuum exhaust valve 15. The first output port of the second gas distributor 16 is connected to a fourth gas guide hose 19, and the other end of the fourth gas guide hose 19 is connected to the vacuum exhaust valve 15 via a joint. The second output port of the second gas distributor 16 is connected to a fifth gas guide hose 21, and the other end of the fifth gas guide hose 21 is connected to the pilot port of the pneumatic pilot stop valve 20 via a joint.

[0031] The nozzle assembly 13 includes a nozzle body 131, a cavity is opened inside the nozzle body 131, a hot air inlet 132 and an exhaust port 133 are provided at the top of the nozzle body 131, the hot air inlet 132 and the exhaust port 133 both pass through the cavity, and the hot air inlet 132 and the exhaust port 133 are respectively connected to the heating cylinder and the guide exhaust pipe 14, a third temperature sensor 134 is provided on the top of the nozzle body 131, and the detection probe of the third temperature sensor 134 extends into the cavity, and a number of evenly distributed jet holes 135 are opened on the front of the nozzle body 131, and the jet holes 135 pass through the cavity.

[0032] Furthermore, in the above technical solution, a controller for controlling the operation of the device is also included. The connection end of the controller is electrically connected to PLC22, and the connection end of the PLC22 is electrically connected to a temperature control module for adjusting the electric heater 23. The output end of the PLC22 is provided with an I / O module. The first temperature sensor 12, the second temperature sensor 27 and the third temperature sensor 134 are all electrically connected to the temperature control module. The electric heater 23, the first solenoid valve 6, the second solenoid valve 17 and the pneumatic pilot stop valve 20 are all electrically connected to the I / O module of PLC22 to achieve automatic monitoring and control with a high degree of intelligence. The connection end of the controller also has a hot air system troubleshooting module and an alarm. When the hot air system has a fault alarm, such as low air pressure, too low or too high flow, too large temperature difference, etc., the hot air device immediately stops heating and waits for the fault to be resolved. When the conveyor belt operation signal is lost, the hot air device stops heating, the three-position five-way valve is reversed, the exhaust port is opened, and the hot compressed air is mainly discharged from the exhaust port to prevent the hot compressed air from damaging the edge strips in the conveyor area.

[0033] Furthermore, in the above technical solution, the air flow meter 24 can be detachably mounted on the rubber hose, the probe of the air flow meter 24 extends into the interior of the rubber hose, and the air flow meter 24 is electrically connected to the PLC22 input module. The air flow meter 24 monitors the outflow of compressed air inside the gas tank 1, which facilitates timely stopping of work and gas replenishment of the device.

[0034] Furthermore, in the above technical solution, a display screen 25 is also included, which is electrically connected to the PLC 22. The display screen 25 is used to display the monitoring values ​​of the first temperature sensor 12, the second temperature sensor 27, the third temperature sensor 134 and the air flow meter 24. The data readability is high, which improves the monitoring effect of the work.

[0035] Furthermore, in the above technical solution, the muffler 26 is detachably connected to the vacuum exhaust valve 15 via a joint. The muffler 26 can eliminate the noise during gas exhaust and ensure a quiet working environment.

[0036] Furthermore, in the above technical solution, the nozzle assembly 13 also includes a baffle 136 and an adjustment plate 138. An adjustment slot 137 is provided between the baffle 136 and the nozzle body 131, and an adjustment plate 138 is slidably connected to the adjustment slot 137. The baffle 136 and the adjustment plate 138 are both matched with the heat-sealed edge strip. When in use, the baffle 136 blocks the edge strip below 2mm, and the adjustment plate 138 blocks the edge strip above 2mm, and at the same time seals the air jet holes 135 that are higher than the thickness of the plate, preventing these air jet holes 135 from spraying high-temperature air and wasting heat. This can ensure that the edge strips can enter and exit smoothly, and at the same time ensure that the edge strips do not deviate and are not blown down by the high-pressure airflow ejected from the air jet holes 135, and can also ensure that the outer surface of the edge strips is not burned. The surface of the adjustment plate 138 is provided with two symmetrically distributed strip grooves 1312, and both sides of the top of the nozzle body 131 are provided with positioning waist-shaped guide bosses 1311. The positioning waist-shaped guide boss 1 The thickness of 311 is greater than the thickness of the adjusting plate 138, which is convenient for the adjusting plate 138 to move up and down, and the two positioning waist-shaped guide bosses 1311 are matched with the two strip grooves 1312 respectively, which are used for positioning guidance when the adjusting plate 138 is adjusted up and down. One end of the two positioning waist-shaped guide bosses 1311 passes through and is threadedly connected with a first bolt 1313, and the baffle 136 is connected and fixed to the nozzle body 131 by the first bolt 1313. The baffle 136 is provided with a threaded hole at the position between the two positioning waist-shaped guide bosses, and the second bolt 1316 is threadedly connected in the threaded hole. The adjusting plate 138 and the nozzle body 131 are abutted and fixed by the second bolt 1316. After the height position of the adjusting plate 138 is adjusted, tighten the second bolt 1316 to tighten the adjusting plate 138, so that it is better in contact with the contact surface of the nozzle body 131, to prevent the nozzle body 131 from leaking through the pores higher than the thickness of the plate, which wastes heat.

[0037] Furthermore, in the above technical solution, a concave surface 1314 is provided on one side of the adjustment plate 138 , and a convex surface 1315 is provided on one end of the nozzle body 131 , and the convex surface 1315 matches the concave surface 1314 .

[0038] Furthermore, in the above technical solution, a first connecting hole 139 is provided on both sides of the top of the adjustment plate 138, and the first connecting hole 139 is used to connect the upper and lower adjustment mechanism of the adjustment plate 138. The bottom end of the nozzle body 131 is fixedly connected to a connecting plate, and a second connecting hole 1310 is provided on the surface of the connecting plate, which is used to fix the nozzle body 131 on the tool magazine table of the edge banding machine.

[0039] Working principle of the present invention:

[0040] Refer to the instruction manual Figure 1-7When the device is in use, the first solenoid valve 6, the second solenoid valve 17 and the pneumatic pilot stop valve 20 are used to control the interruption and unblocking of the rubber hose connection pipeline. When it is necessary to use edge banding tape with a functional layer such as PVS, ABS, PP, or PMA to edge-band the board, the first solenoid valve 6 is opened to allow the compressed gas in the gas tank 1 to pass into the heating device 11 and be heated by the electric heater 23. At the beginning, a small flow of compressed air passes through the heater so that the outlet temperature of the heating device quickly rises to 660°C. The high-temperature air is then passed into the nozzle assembly 13 and into the cavity through the hot air inlet 132. At this time, the air exhaust port 133 is closed, and the compressed air is ejected from the air jet hole 135. When the temperature at the air jet hole 135 is heated to about 420°C, the air is first blown at a high flow rate for 2 seconds, and then at a low flow rate for 2 seconds. After repeating this action 20 times, it is switched to a low flow rate to make the temperature at the air jet hole 135 reach the set working temperature of 500 degrees. If it has not reached the set working temperature yet, the high flow rate can be continued to heat the air jet hole 135 to the working temperature, and then the low flow rate can be blown to heat-seal the edge banding to be processed. When the front end of the plate reaches the plate detection switch behind the glue pot, the PLC 22 starts to calculate according to the delay time set by the parameter. When the delay time is up, the low-flow air blowing is changed to high-flow air blowing, and the edge banding strip automatically fed in is started to melt. When the tail end of the plate leaves the plate detection switch, PLC 22 starts to calculate according to the delay time set by the parameter. When the delay time is up, the high-flow air blowing is stopped and automatically switched to low-flow air blowing. When waiting for the next plate to arrive, the above actions are automatically repeated. When production is stopped, the hot air heating is stopped, and the high-flow air blowing button is pressed. A large flow of compressed air is ejected from the nozzle hole to cool the heating device and the air jet hole 135. When the temperature of the air jet hole 135 drops below 80°C, the conveyor belt can be stopped, the high-flow air blowing is released, the air inlet valve of the air tank is turned off, and then the high-flow air blowing button is pressed to exhaust the air from the air tank 1. The heat energy generated by the high-temperature, high-speed high-flow compressed air quickly melts the material functional layer of the edge banding strip, and then the edge banding strip is pressed to the side of the workpiece through the pressure wheel area. No hot melt adhesive is needed to achieve seamless bonding between the edge banding strip and the workpiece.

[0041] Refer to the instruction manual Figure 1-7 The device ensures stable pressure when the gas tank 1 is inflated through the triplex 2. The device is easy to install, and the baffle 136 and the nozzle body 131 are fixed by bolts 1313. The nozzle body 131 can slide on the adjustment plate 138 and is tightened by bolts to facilitate position adjustment. The system can be used alone or installed on any conventional edge banding machine. Its original configuration is intact and does not affect the control of the original machine. You can choose to use the original glue edge banding or hot air edge banding.

[0042] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A hot air edge sealing device, comprising an air storage tank (1), a triplex (2), an air flow meter (24) and a plurality of rubber hoses, characterized in that: The input end of the gas storage tank (1) is connected to the triplex (2) through a rubber hose, and a ball valve (3) is provided between the gas storage tank (1) and the triplex (2). The output end of the gas storage tank (1) is connected to the air flow meter (24) through a rubber hose. The output end of the air flow meter (24) is connected to a first gas distribution block (4). The output end of the first gas distribution block (4) is divided into four gas outlets. The first gas outlet is connected to a connecting hose (5) through a joint, and a large flow regulating valve (7) is provided on the connecting hose (5). The second gas outlet is connected to a first air guide hose (8) through a joint, and the first air guide hose (8 ) is provided with a small flow regulating valve (9), the output end of the connecting hose (5) is provided with a first solenoid valve (6), a second air guide hose (10) is provided between the third air path outlet and the first solenoid valve (6), and a joint is also provided at the connection between the second air guide hose (10), the third air path outlet and the pilot port of the first solenoid valve (6), the fourth air path outlet is connected to the third air guide hose (18), and the output end of the third air guide hose (18) is connected to the second solenoid valve (17), the output end of the third air guide hose (18) is connected to the "P" port of the second solenoid valve (17) through a joint, and the outlet of the large flow regulating valve (7) is connected to the first solenoid valve (17) through a joint. The "P" interface of the magnetic valve (6), the outlet of the small flow regulating valve (9) is connected to the "R" interface of the first electromagnetic valve (6) through a joint, the output end of the first electromagnetic valve (6) is connected to the heating device (11) through a rubber hose and a joint, the heating device includes a heating cylinder, and an electric heater (23) is provided inside the heating cylinder, the heating device (11) is provided with a first temperature sensor (12) and a second temperature sensor (27), the output end of the heating cylinder is connected to the nozzle assembly (13) through a copper tube and a joint, and a guide exhaust pipe (14) is provided on one side of the top of the nozzle assembly (13), and the guide exhaust pipe (1 4) The top end is connected to a pneumatic pilot stop valve (20) through a copper tube, the outlet of the pneumatic pilot stop valve (20) is connected to a vacuum exhaust valve (15) through a joint and a steel pipe, the outlet of the vacuum exhaust valve (15) is provided with a muffler (26), the first output port of the second gas distribution block (16) is connected to a fourth gas guide hose (19), and the other end of the fourth gas guide hose (19) is connected to the vacuum exhaust valve (15) through a joint, the second output port of the second gas distribution block (16) is connected to a fifth gas guide hose (21), and the other end of the fifth gas guide hose (21) is connected to the pilot port of the pneumatic pilot stop valve (20) through a joint; The nozzle assembly (13) includes a nozzle body (131), a cavity is provided inside the nozzle body (131), a hot air inlet (132) and an exhaust port (133) are provided at the top of the nozzle body (131), the hot air inlet (132) and the exhaust port (133) both pass through the cavity, and the hot air inlet (132) and the exhaust port (133) are respectively connected to the heating cylinder and the guide exhaust pipe (14), a third temperature sensor (134) is provided at the top of the nozzle body (131), and a detection probe of the third temperature sensor (134) extends into the cavity, and a plurality of evenly distributed jet holes (135) are provided on the front of the nozzle body (131), and the jet holes (135) pass through the cavity.

2. The hot air edge sealing device according to claim 1, characterized in that: The device further comprises a controller for controlling the operation of the device, wherein the connection end of the controller is electrically connected to a PLC (22), the connection end of the PLC (22) is electrically connected to a temperature control module for adjusting the electric heater (23), the output end of the PLC (22) is provided with an I / O module, the first temperature sensor (12), the second temperature sensor (27) and the third temperature sensor (134) are all electrically connected to the temperature control module, and the electric heater (23), the first solenoid valve (6), the second solenoid valve (17) and the pneumatic pilot stop valve (20) are all electrically connected to the I / O module of the PLC (22).

3. The hot air edge sealing device according to claim 2, characterized in that: The air flow meter (24) is detachably mounted on the rubber hose, a probe of the air flow meter (24) extends into the interior of the rubber hose, and the air flow meter (24) is electrically connected to the PLC (22) input module.

4. The hot air edge sealing device according to claim 3, characterized in that: The system further includes a display screen (25), which is electrically connected to the PLC (22). The display screen (25) is used to display monitoring values ​​of the first temperature sensor (12), the second temperature sensor (27), the third temperature sensor (134), and the air flow meter (24).

5. The hot air edge sealing device according to claim 1, characterized in that: The muffler (26) is detachably connected to the vacuum exhaust valve (15) via a joint.

6. The hot air edge sealing device according to claim 1, characterized in that: The nozzle assembly (13) further comprises a baffle (136) and an adjustment plate (138), an adjustment notch (137) is provided between the baffle (136) and the nozzle body (131), an adjustment plate (138) is slidably connected inside the adjustment notch (137), the baffle (136) and the adjustment plate (138) are both matched with the heat-sealed edge strip, the surface of the adjustment plate (138) is provided with two symmetrically distributed strip grooves (1312), and both sides of the top of the nozzle body (131) are provided with positioning waist-shaped guide bosses (1311), the thickness of the positioning waist-shaped guide bosses (1311) is greater than that of the adjustment plate (13 8) in thickness, and the two positioning waist-shaped guide bosses (1311) are matched with the two strip grooves (1312) respectively, one end of the two positioning waist-shaped guide bosses (1311) passes through and is threadedly connected with a first bolt (1313), the baffle (136) and the nozzle body (131) are connected and fixed by the first bolt (1313), the baffle (136) is provided with a threaded hole at a position between the two positioning waist-shaped guide bosses, the threaded hole is threadedly connected with a second bolt (1316), and the adjustment plate (138) and the nozzle body (131) are abutted and fixed by the second bolt (1316).

7. The hot air edge sealing device according to claim 6, characterized in that: A concave surface (1314) is provided on one side of the adjustment plate (138), and a convex surface (1315) is provided on one end of the nozzle body (131), and the convex surface (1315) matches the concave surface (1314).

8. The hot air edge sealing device according to claim 6, characterized in that: First connection holes (139) are provided on both sides of the top of the adjustment plate (138), and a connection plate is fixedly connected to the bottom end of the nozzle body (131), and a second connection hole (1310) is provided on the surface of the connection plate.

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