High-safety screen printing plate heat sealing equipment

Abstract

The invention discloses high-safety screen printing plate heat sealing equipment which comprises a shell, a heating mechanism, a cooling mechanism, a pressing mechanism and an air draft mechanism, a closed containing cavity is formed in the shell, and an operation window capable of being opened or closed is formed in the shell; the heating mechanism comprises a frame body and a heating plate, a first water cooling channel is formed in the frame body, and the heating plate is arranged in the frame body; the cooling mechanism is used for introducing cooling liquid into the first water cooling channel; an inlet of the air draft mechanism communicates with the containing cavity. According to the heat sealing device, harmful substances volatilized by the PI film in the heat sealing process are effectively collected and extracted. Therefore, the contact between operators and harmful volatile matters is greatly reduced, and the risk of suffering from respiratory diseases is reduced; meanwhile, the cooling mechanism introduces cooling liquid into the first water cooling channel of the frame body, excessive heat of the heating plate is prevented from being conducted to the periphery of the heat sealing area, the influence of heat on the periphery of the heat sealing area of the polyester screen cloth is greatly reduced, and the physical performance of the polyester screen cloth is kept.

Description

Technical Field

[0001] This application relates to the technical field of solar printing screen plate production, and specifically relates to a high-safety screen plate heat-sealing device. Background Art

[0002] In the production process of solar printing screen plates, the heat-sealing link plays a crucial role. The quality of heat-sealing directly affects the final performance and service life of solar printing screen plates. Traditional screen plate heat-sealing devices mostly adopt an open design for the sake of operation convenience. During the heat-sealing process, the PI film used in the screen plate plays a key role. However, the solvents and other volatile substances contained in the PI film have a sharp decline in stability under high-temperature environments and are extremely volatile. Among these volatile substances, some are harmful. For example, certain organic volatiles may irritate the respiratory tract. Long-term exposure to them will significantly increase the risk of operators suffering from respiratory diseases and cause non-negligible damage to their physical health. Working in such an environment for a long time, operators may also face health hazards in multiple aspects such as the nervous system and immune system. In addition, from the working principle of the heat-sealing device, while the heating plate precisely heats the heat-sealing area, it will inevitably conduct heat to the periphery of the heat-sealing area, thereby heating the surrounding polyester mesh cloth. The physical properties of the polyester mesh cloth are extremely sensitive to temperature, and even slight temperature changes may cause changes in its internal structure. During the heat-sealing process, after the polyester mesh cloth outside the heat-sealing area is heated, its key physical properties such as tensile strength and flexibility will be significantly affected. This not only reduces the quality of the polyester mesh cloth itself but also may cause problems such as deformation and changes in mesh hole size in the entire screen plate during subsequent use, seriously affecting the printing accuracy and quality of solar printing screen plates, and further affecting the production efficiency and performance of solar cells. In summary, the open design of traditional screen plate heat-sealing devices has significant deficiencies in the health protection of operators and the protection of the performance of screen plate materials, and there is an urgent need to develop a new type of high-safety screen plate heat-sealing device to solve these problems. Summary of the Invention

[0003] In order to solve the technical problems in the prior art, this application provides a high-safety screen plate heat-sealing device.

[0004] The high-safety screen plate heat-sealing device provided by this application adopts the following technical solutions: A high-safety screen plate heat-sealing device, comprising: A housing, a sealed accommodation cavity is formed inside the housing, and an operable window is opened on the housing; Heating mechanism, the heating mechanism includes a frame body and a heating plate, a first water cooling channel is formed inside the frame body, the heating plate is arranged inside the frame body, and the upper surfaces of the frame body and the heating plate are used for placing a polyester mesh cloth and a metal mesh; Cooling mechanism, the cooling mechanism is used to introduce a coolant into the first water cooling channel; Pressing mechanism, the pressing mechanism is used to press the polyester mesh cloth and the metal mesh onto the upper surface of the heating plate; and, Air extraction mechanism, the inlet of the air extraction mechanism is communicated with the accommodation cavity.

[0005] By adopting the above technical solution, by designing the device as a housing structure with a sealed accommodation cavity and cooperating with the air extraction mechanism, it can effectively collect and extract the harmful substances volatilized by the PI film during the heat sealing process. This greatly reduces the contact between the operator and the harmful volatiles, reduces the risk of suffering from respiratory diseases, effectively protects the operator's nervous system, immune system, etc., improves the working environment, and ensures the physical health of the operator; at the same time, the cooling mechanism introduces the coolant into the first water cooling channel of the frame body, so that when the heating mechanism performs heat sealing, the frame body can absorb and take away part of the heat, preventing too much heat of the heating plate from being conducted to the periphery of the heat sealing area. The influence of heat on the periphery of the heat sealing area of the polyester mesh cloth is greatly reduced, and its physical properties are maintained.

[0006] Preferably, the heating mechanism further includes a shelf, the shelf is arranged inside the housing, a groove is formed on the shelf, and the frame body is fixed inside the groove.

[0007] By adopting the above technical solution, the shelf is arranged inside the housing, and the frame body is fixed inside the groove of the shelf. This structural design provides a stable installation basis for the heating mechanism.

[0008] Preferably, a second water cooling channel and a third water cooling channel are formed inside the shelf, one end of the second water cooling channel is communicated with one end of the first water cooling channel, and one end of the third water cooling channel is communicated with the other end of the first water cooling channel; the cooling mechanism includes a coolant tank, a liquid inlet pump, a liquid inlet pipe, a liquid inlet valve, a liquid outlet pipe, a liquid outlet valve and a refrigerating member, the coolant tank is used for storing the coolant, the inlet of the liquid inlet pump is communicated with the coolant tank, the outlet of the liquid inlet pump is communicated with one end of the liquid inlet pipe, the other end of the liquid inlet pipe is communicated with the other end of the second water cooling channel, the liquid inlet valve is arranged on the liquid inlet pipe, one end of the liquid outlet pipe is communicated with the other end of the third water cooling channel, the other end of the liquid outlet pipe is communicated with the coolant tank, the liquid outlet valve is arranged on the liquid outlet pipe, and the refrigerating member is used for refrigerating the coolant in the coolant tank.

[0009] By adopting the above technical solution, a complete coolant circulation system is formed through the connection between the second water-cooling channel and the third water-cooling channel and the first water-cooling channel, which can more efficiently take away the heat generated by the heating plate, effectively reduce the heating effect on the polyester mesh cloth outside the heat-sealing area, and improve the heat-sealing quality.

[0010] Preferably, the refrigeration element includes a temperature sensor and a semiconductor refrigeration element, the temperature sensor is arranged in the coolant tank, the cold end of the semiconductor refrigeration element is located in the coolant tank, and the hot end of the semiconductor refrigeration element is located outside the coolant tank.

[0011] By adopting the above technical solution, the temperature sensor and the semiconductor refrigeration element work together to effectively avoid large fluctuations in the coolant temperature. This helps to reduce damage to the heating mechanism and other components caused by unstable temperature, extend the service life of the equipment, and improve the reliability and stability of the system.

[0012] Preferably, the clamping mechanism includes a clamping cylinder and a pressing plate, the fixed end of the clamping cylinder is fixed to the shell, the output end of the clamping cylinder is fixedly connected to the pressing plate, and the pressing plate is used to press on the polyester mesh and the metal mesh placed on the heating plate.

[0013] By adopting the above technical solution, the fixed end of the pressing cylinder is fixed to the housing, and this fixing method makes the pressing cylinder have good stability during operation. When the cylinder is started, it can stably transmit force to the pressing plate, ensuring that the pressing plate applies stable pressure to the polyester mesh and the metal mesh, thereby ensuring the stability of the heat-sealing quality.

[0014] Preferably, an air inlet is provided on the shell, a filter is arranged in the air inlet, and an exhaust port is also provided on the shell; the exhaust mechanism includes an air suction hood, an exhaust fan and a waste gas treatment device, the air suction hood is fixed above the pressure plate, the outlet of the air suction hood is connected to the air inlet, the inlet of the exhaust fan is connected to the air inlet, and the outlet of the exhaust fan is connected to the inlet of the waste gas treatment device.

[0015] By adopting the above technical solution, the suction hood is located above the pressure plate, which can efficiently collect these waste gases. The waste gases enter the exhaust fan through the air inlet and are then transported to the waste gas treatment equipment. The waste gas treatment equipment can purify the waste gases and remove harmful substances therein, so that the discharged gases meet environmental protection standards, effectively improve the air quality in the workplace, and protect the health of operators.

[0016] Preferably, the high - security screen plate heat - sealing device further includes a plurality of clamping mechanisms. Each clamping mechanism includes a fixed column, a swing rod, a pressing rod, and a telescopic driving member. The fixed column is fixed on the frame body. The middle part of the swing rod is hinged to the fixed column. One end of the pressing rod is fixed to one end of the swing rod. One end of the telescopic driving member is hinged to the fixed column, and the other end of the telescopic driving member is hinged to the other end of the pressing rod.

[0017] By adopting the above - mentioned technical solution, after the polyester mesh cloth and the metal mesh are placed on the heating plate, the clamping mechanism can quickly pre - clamp their outer edges. Since the fixed column is fixed on the frame body, and the swing rod, the pressing rod, and the telescopic driving member cooperate with each other, the mesh cloth and the metal mesh can be accurately positioned at a predetermined position. This enables them to be in an accurate initial position before the subsequent pressing mechanism works, avoiding problems such as poor heat - sealing caused by position deviation, such as uneven edges and loose fitting, and improving the heat - sealing accuracy and product quality.

[0018] Preferably, the high - security screen plate heat - sealing device further includes a flipping mechanism. The flipping mechanism includes a rotating shaft and a flipping driving member. The rotating shaft is rotatably arranged in the shell and extends in the horizontal direction. Two heating mechanisms are respectively arranged on both sides of the rotating shaft. The shelves of the two heating mechanisms are respectively fixed on both sides of the rotating shaft. Grooves are respectively formed on both shelves. A frame body is respectively fixed in each groove. A heating plate is installed in each frame body. A plurality of clamping mechanisms are arranged on each frame body. The flipping driving member is connected to the rotating shaft and is used to drive the rotating shaft to rotate so that one of the shelves is located above the rotating shaft.

[0019] By adopting the above - mentioned technical solution, two heating mechanisms are used and switched by the flipping mechanism. When one heating mechanism is performing heat - sealing work, the other heating mechanism can be waiting to cool naturally at the same time, reducing the idle time of the equipment, realizing continuous production, and greatly improving production efficiency. If there is only one heating mechanism, after heat - sealing is completed, it is necessary to wait for the heating mechanism to cool down before placing the next polyester mesh cloth and metal mesh. Therefore, using two heating mechanisms reduces the idle time of the equipment and realizes continuous production.

[0020] Preferably, the flipping mechanism further includes a positioning component. The positioning component includes two positioning cylinders and a positioning telescopic member. The two positioning cylinders are respectively fixed on two opposite frame bodies. The fixed end of the positioning telescopic member is fixed to the shell. When one of the shelves is located above the rotating shaft and is horizontally arranged, the movable end of the positioning telescopic member can be inserted into the positioning cylinder fixed on this shelf.

[0021] By adopting the above technical solution, when the flipping driving member drives the rotating shaft to rotate so that one of the shelves is located above the rotating shaft and horizontally arranged, the movable end of the positioning telescopic member is inserted into the positioning cylinder fixed on the shelf. This precise fit can ensure that the heating mechanism is in the accurate working position and guarantee the position accuracy of the polyester mesh cloth and the metal mesh during the heat sealing process.

[0022] Preferably, a collecting plate is further arranged in the housing, and the collecting plate is located below the shelf.

[0023] By adopting the above technical solution, the collecting plate provides a centralized collecting area, enabling the heat-sealed products to be stacked orderly together. The staff only needs to collect the products from the collecting plate regularly, which greatly improves the efficiency of product collection.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. By designing the device as a housing structure with a sealed accommodating cavity and cooperating with the air extraction mechanism, it can effectively collect and extract the harmful substances volatilized by the PI film during the heat sealing process. This greatly reduces the contact between the operator and the harmful volatiles, reduces the risk of suffering from respiratory diseases, effectively protects the operator's nervous system, immune system, etc., improves the working environment, and guarantees the physical health of the operator; at the same time, the cooling mechanism introduces the coolant into the first water cooling channel of the frame body, so that when the heating mechanism performs heat sealing, the frame body can absorb and take away part of the heat, preventing too much heat of the heating plate from being conducted to the periphery of the heat sealing area. The influence of heat on the periphery of the heat sealing area of the polyester mesh cloth is greatly reduced, and its physical properties are maintained; 2. After the polyester mesh cloth and the metal mesh are placed on the heating plate, the clamping mechanism can quickly pre-clamp their outer edges. Since the fixed column is fixed on the frame body, the swing rod, the pressing rod and the telescopic driving member cooperate with each other, and the mesh cloth and the metal mesh can be accurately positioned at the predetermined position. This enables them to be in the accurate initial position before the subsequent pressing mechanism works, avoiding heat sealing defects caused by position deviation, such as uneven edges and poor adhesion, and improving the heat sealing accuracy and product quality; 3. By adopting a double heating mechanism and switching the use through the flipping mechanism, when one heating mechanism is performing heat sealing work, the other heating mechanism can be waiting to cool down naturally at the same time, reducing the idle time of the device, realizing continuous production, and greatly improving the production efficiency. The design of the flipping mechanism enables the two heating mechanisms to work alternately in a limited space, making full use of the space inside the housing, making the structure of the device more compact, and reducing the floor area of the device; 4. When the flipping driving member drives the rotating shaft to rotate so that one of the shelves is located above the rotating shaft and horizontally arranged, the movable end of the positioning telescopic member is inserted into the positioning cylinder fixed on the shelf. This precise fit can ensure that the heating mechanism is in the accurate working position and guarantee the position accuracy of the polyester mesh cloth and the metal mesh during the heat-sealing process. Description of the Drawings

[0025] Figure 1 is the front view of the high-security screen printing heat-sealing device provided by Embodiment 1 of the present application; Figure 2 is Figure 1 the structural schematic diagram of the high-security screen printing heat-sealing device in Figure 3 is Figure 2 the partial enlarged view of area A in Figure 4 is Figure 2 the partial enlarged view of area B in Figure 5 is the structural schematic diagram of the high-security screen printing heat-sealing device provided by Embodiment 2 of the present application; Figure 6 is Figure 5 the partial enlarged view of area C in Description of the Reference Numerals: 1. Housing; 11. Operation Window; 12. Filter Element; 13. Air Extraction Port; 14. Collection Plate; 2. Heating Mechanism; 21. Frame; 211. First Water Cooling Channel; 22. Heating Plate; 23. Shelf; 231. Groove; 232. Second Water Cooling Channel; 233. Third Water Cooling Channel; 24. Connecting Pipe; 3. Cooling Mechanism; 31. Coolant Tank; 32. Liquid Feed Pump; 33. Liquid Feed Pipe; 34. Liquid Feed Valve; 35. Liquid Discharge Pipe; 36. Liquid Discharge Valve; 37. Refrigeration Component; 371. Temperature Sensor; 372. Semiconductor Refrigeration Component; 4. Pressing Mechanism; 41. Pressing Cylinder; 42. Pressing Plate; 5. Air Extraction Mechanism; 51. Suction Hood; 52. Exhaust Fan; 53. Exhaust Gas Treatment Equipment; 6. Polyester Mesh Cloth and Metal Mesh; 7. Clamping Mechanism; 71. Fixed Column; 72. Swing Rod; 73. Pressing Rod; 74. Telescopic Driving Member; 8. Flipping Mechanism; 81. Rotating Shaft; 82. Flipping Driving Member; 83. Positioning Assembly; 831. Positioning Cylinder; 832. Positioning Telescopic Member. Detailed Description of the Embodiments

[0026] The following further describes the present application in detail with reference to the Figures 1-6 drawings.

[0027] The embodiments of the present application disclose a high-security screen printing heat-sealing device.

[0028] Embodiment 1 Refer to Figures 1-4, a high - security screen printing heat - sealing device includes a housing 1, a heating mechanism 2, a cooling mechanism 3, a pressing mechanism 4, and an air - extraction mechanism 5.

[0029] A sealed accommodation cavity is formed inside the housing 1, and an operable window 11 is provided on the housing 1. In this embodiment, the main part of the operable window 11 is made of explosion - proof glass material, so as to facilitate the operator to observe the internal situation of the housing 1.

[0030] The heating mechanism 2 includes a frame 21 and a heating plate 22. A first water - cooling channel 211 is formed inside the frame 21. The heating plate 22 is disposed inside the frame 21, and the upper surfaces of the frame 21 and the heating plate 22 are used to place a polyester mesh and a metal mesh 6.

[0031] The cooling mechanism 3 is used to introduce a coolant into the first water - cooling channel 211.

[0032] The pressing mechanism 4 is used to press the polyester mesh and the metal mesh 6 tightly against the upper surface of the heating plate 22.

[0033] The inlet of the air - extraction mechanism 5 is communicated with the accommodation cavity.

[0034] During use, the operator opens the operable window 11 and places the polyester mesh and the metal mesh 6 on the upper surfaces of the frame 21 and the heating plate 22 of the heating mechanism 2. At this time, the cooling mechanism 3 starts to introduce a coolant into the first water - cooling channel 211 inside the frame 21 to prepare for cooling the heating mechanism 2 in advance, preventing the residual heat of the heating plate 22 from affecting the subsequently placed mesh. The pressing mechanism 4 is started to tightly press the polyester mesh and the metal mesh 6 against the upper surface of the heating plate 22 to ensure that the polyester mesh and the metal mesh 6 are closely attached during the heat - sealing process, improving the heat - sealing effect. Then the heating mechanism 2 is turned on, and the heating plate 22 starts to heat the connection area between the polyester mesh and the metal mesh to achieve heat - sealing of the two. During this process, due to the existence of the first water - cooling channel 211 in the frame 21, it takes away part of the heat, reduces the heat conducted by the heating plate 22 to the surrounding area, and reduces the heating effect on the polyester mesh outside the heat - sealing area. At the same time, the air - extraction mechanism 5 is started, and its inlet is communicated with the sealed accommodation cavity inside the housing 1 to extract the solvent and other volatile substances volatilized from the PI film during the heat - sealing process. After heat - sealing is completed, the heating mechanism 2 is turned off and the heating plate 22 is waited to cool. The technical effects of the above technical solution are as follows: By designing the device as a housing 1 structure with a sealed accommodation cavity and cooperating with the air extraction mechanism 5, harmful substances volatilized from the PI film during the heat sealing process can be effectively collected and extracted. This greatly reduces the contact between the operator and the harmful volatiles, reduces the risk of respiratory diseases, effectively protects the nervous system, immune system, etc. of the operator, improves the working environment, and ensures the physical health of the operator. At the same time, the cooling mechanism 3 injects coolant into the first water cooling channel 211 of the frame 21, so that when the heating mechanism 2 performs heat sealing, the frame 21 can absorb and take away part of the heat, preventing excessive heat of the heating plate 22 from being conducted to the periphery of the heat sealing area. The influence of heat on the periphery of the polyester mesh heat sealing area is greatly reduced, and its physical properties are maintained.

[0035] Preferably, please refer to Figures 1-4 , the heating mechanism 2 further includes a shelf 23, the shelf 23 is arranged in the housing 1, a groove 231 is formed on the shelf 23, and the frame 21 is fixed in the groove 231. In this embodiment, the shelf 23 is arranged in the housing 1, and the frame 21 is fixed in the groove 231 of the shelf 23. This structural design provides a stable installation foundation for the heating mechanism 2.

[0036] Preferably, please refer to Figures 1-4 , a second water cooling channel 232 and a third water cooling channel 233 are formed in the shelf 23, one end of the second water cooling channel 232 is communicated with one end of the first water cooling channel 211, and one end of the third water cooling channel 233 is communicated with the other end of the first water cooling channel 211; the cooling mechanism 3 includes a coolant tank 31, a liquid inlet pump 32, a liquid inlet pipe 33, a liquid inlet valve 34, a liquid outlet pipe 35, a liquid outlet valve 36 and a refrigerating member 37. The coolant tank 31 is used for storing coolant. The inlet of the liquid inlet pump 32 is communicated with the coolant tank 31, the outlet of the liquid inlet pump 32 is communicated with one end of the liquid inlet pipe 33, the other end of the liquid inlet pipe 33 is communicated with the other end of the second water cooling channel 232, the liquid inlet valve 34 is arranged on the liquid inlet pipe 33, one end of the liquid outlet pipe 35 is communicated with the other end of the third water cooling channel 233, the other end of the liquid outlet pipe 35 is communicated with the coolant tank 31, the liquid outlet valve 36 is arranged on the liquid outlet pipe 35, and the refrigerating member 37 is used for refrigerating the coolant in the coolant tank 31.

[0037] In this embodiment, during use, the polyester mesh and the metal mesh 6 are placed on the upper surfaces of the frame 21 and the heating plate 22 of the heating mechanism 2. At this time, the liquid inlet pump 32 and the liquid inlet valve 34 are turned on. Under the action of the liquid inlet pump 32, the coolant in the coolant tank 31 flows into the second water cooling channel 232 in the shelf 23 through the liquid inlet pipe 33. Since the second water cooling channel 232 is communicated with the first water cooling channel 211 in the frame 21, the coolant then flows into the first water cooling channel 211 to prepare for cooling the heating mechanism 2 in advance and prevent the residual heat of the heating plate 22 from affecting the subsequently placed mesh. At the same time, the refrigerating member 37 refrigerates the coolant in the coolant tank 31 to ensure the low temperature state of the coolant. The pressing mechanism 4 is started to tightly press the polyester mesh and the metal mesh 6 on the upper surface of the heating plate 22. Then the heating mechanism 2 is turned on, and the heating plate 22 starts to heat the connection area between the polyester mesh and the metal mesh to realize heat sealing between the two. During the heating process, the coolant continuously circulates in the first water cooling channel 211, the second water cooling channel 232 and the third water cooling channel 233, taking away part of the heat generated by the heating plate 22, reducing the heat conducted by the heating plate 22 to the periphery, and reducing the heating effect on the polyester mesh outside the heat sealing area. After the coolant flows out of the third water cooling channel 233, it flows back to the coolant tank 31 through the liquid outlet pipe 35, and the liquid outlet valve 36 can control the outflow of the coolant.

[0038] In this embodiment, through the connection between the second water cooling channel 232 and the third water cooling channel 233 and the first water cooling channel 211, a complete coolant circulation system is formed, which can more efficiently take away the heat generated by the heating plate 22, effectively reduce the heating effect on the polyester mesh outside the heat sealing area, and improve the heat sealing quality. The setting of the refrigerating member 37 can refrigerate the coolant in the coolant tank 31 to ensure that the coolant is always in a lower temperature state, so that the cooling process is more stable and controllable. The coolant circulates in the system, flows out of the coolant tank 31, passes through each water cooling channel and then flows back to the coolant tank 31, realizing the recycling of the coolant, reducing the waste of the coolant, and reducing the operation cost.

[0039] Preferably, please refer to Figures 1-4 , to improve the space utilization rate inside the housing 1, two of the shelves 23 are arranged in parallel, and the heating mechanism 2 is arranged on each shelf 23. At the same time, the water cooling channels between two adjacent shelves 23 are connected by a connecting pipe 24, so that the coolant can flow through the two shelves 23 and the heating mechanism 2 in sequence.

[0040] Preferably, please refer to Figures 1-4, the refrigerating component 37 includes a temperature sensor 371 and a semiconductor refrigerating component 372. The temperature sensor 371 is disposed in the coolant tank 31. The cold end of the semiconductor refrigerating component 372 is located in the coolant tank 31, and the hot end of the semiconductor refrigerating component 372 is located outside the coolant tank 31. A stable coolant temperature is crucial for the normal operation of the high-safety screen heat-sealing device. Through the collaborative work of the temperature sensor 371 and the semiconductor refrigerating component 372, significant fluctuations in the coolant temperature can be effectively avoided. This helps reduce the damage caused to the heating mechanism and other components due to temperature instability, extends the service life of the device, and improves the reliability and stability of the system.

[0041] Preferably, refer to Figures 1-4 , the pressing mechanism 4 includes a pressing cylinder 41 and a pressing plate 42. The fixed end of the pressing cylinder 41 is fixed to the housing 1. The output end of the pressing cylinder 41 is fixedly connected to the pressing plate 42. The pressing plate 42 is used to press on the polyester mesh cloth and the metal mesh 6 placed on the heating plate 22. In this embodiment, the fixed end of the pressing cylinder 41 is fixed to the housing 1. This fixing method enables the pressing cylinder 41 to have good stability during operation. When the cylinder is started, it can stably transmit force to the pressing plate 42, ensuring that the pressing plate 42 applies a stable pressure to the polyester mesh cloth and the metal mesh 6, thereby guaranteeing the stability of the heat-sealing quality.

[0042] Preferably, refer to Figures 1-4 , an air inlet is formed on the housing 1, and a filtering member 12 is disposed in the air inlet. A suction port 13 is also formed on the housing 1. The air extraction mechanism 5 includes an air suction hood 51, an air extraction fan 52, and an exhaust gas treatment device 53. The air suction hood 51 is fixed above the pressing plate 42. The outlet of the air suction hood 51 is communicated with the air inlet. The inlet of the air extraction fan 52 is communicated with the air inlet. The outlet of the air extraction fan 52 is communicated with the inlet of the exhaust gas treatment device 53. In this embodiment, the filtering member 12 disposed in the air inlet of the housing 1 can filter the air entering the housing. During the operation of the device, external air enters through the air inlet. The filtering member 12 can intercept dust, particles and other impurities in the air, preventing these impurities from entering the interior of the housing and avoiding their attachment to components such as the polyester mesh cloth, the metal mesh or the heating mechanism, thereby ensuring the quality of the heat-sealing process and reducing the heat-sealing defects caused by impurities. The air extraction mechanism 5 can extract the solvents and other volatile substances volatilized from the PI film during the heat-sealing process. The air suction hood 51 is located above the pressing plate 42, and can efficiently collect these exhaust gases. The exhaust gases enter the air extraction fan 52 through the air inlet and are then transported to the exhaust gas treatment device 53. The exhaust gas treatment device 53 can purify the exhaust gases, remove the harmful substances therein, make the discharged gases meet the environmental protection standards, effectively improve the air quality of the working place, and protect the health of the operators.

[0043] Preferably, please refer to Figures 1-4 , the high - security screen printing heat - sealing device further includes a plurality of clamping mechanisms 7. The clamping mechanism 7 includes a fixed column 71, a swing rod 72, a pressing rod 73 and a telescopic driving member 74. The fixed column 71 is fixed on the frame 21. The middle of the swing rod 72 is hinged to the fixed column 71. One end of the pressing rod 73 is fixed to one end of the swing rod 72. One end of the telescopic driving member 74 is hinged to the fixed column 71, and the other end of the telescopic driving member 74 is hinged to the other end of the pressing rod 73. In this embodiment, after the polyester mesh cloth and the metal mesh 6 are placed on the heating plate 22, the clamping mechanism 7 can quickly pre - clamp their outer edges. Since the fixed column 71 is fixed on the frame 21, the swing rod 72, the pressing rod 73 and the telescopic driving member 74 cooperate with each other, and the mesh cloth and the metal mesh can be accurately positioned at a predetermined position. This enables them to be in an accurate initial position before the subsequent pressing mechanism 4 works, avoiding problems such as poor heat - sealing caused by position deviation, such as uneven edges and loose fitting, improving the heat - sealing accuracy and product quality.

[0044] The technical effects of the technical solution provided by Embodiment 1 include: 1. By designing the device as a housing 1 structure with a sealed accommodation cavity and cooperating with the air - extraction mechanism 5, harmful substances volatilized from the PI film during the heat - sealing process can be effectively collected and extracted. This greatly reduces the contact between the operator and the harmful volatiles, reduces the risk of respiratory diseases, effectively protects the operator's nervous system, immune system, etc., improves the working environment, and ensures the physical health of the operator. At the same time, the cooling mechanism 3 introduces coolant into the first water - cooling channel 211 of the frame 21, so that when the heating mechanism 2 performs heat - sealing, the frame 21 can absorb and take away part of the heat, preventing excessive heat of the heating plate 22 from being conducted to the periphery of the heat - sealing area. The influence of heat on the periphery of the polyester mesh cloth heat - sealing area is greatly reduced, and its physical properties are maintained.

[0045] 2. After the polyester mesh cloth and the metal mesh 6 are placed on the heating plate 22, the clamping mechanism 7 can quickly pre - clamp their outer edges. Since the fixed column 71 is fixed on the frame 21, the swing rod 72, the pressing rod 73 and the telescopic driving member 74 cooperate with each other, and the mesh cloth and the metal mesh can be accurately positioned at a predetermined position. This enables them to be in an accurate initial position before the subsequent pressing mechanism 4 works, avoiding problems such as poor heat - sealing caused by position deviation, such as uneven edges and loose fitting, improving the heat - sealing accuracy and product quality.

[0046] Embodiment 2 Please refer to Figure 5 and Figure 6, the main structure of Example 2 is basically the same as that of Example 1, except that in Example 2, the high-security screen thermal lamination device further includes a flipping mechanism 8. The flipping mechanism 8 includes a rotating shaft 81 and a flipping driving member 82. The rotating shaft 81 is rotatably arranged in the housing 1 and extends in the horizontal direction. Two heating mechanisms 2 are respectively arranged on both sides of the rotating shaft 81. The shelves 23 of the two heating mechanisms 2 are respectively fixed on both sides of the rotating shaft 81. Grooves 231 are formed on both of the two shelves 23. A frame 21 is respectively fixed in each of the grooves 231. A heating plate 22 is installed in each of the frames 21. A plurality of clamping mechanisms 7 are arranged on each of the frames 21. The flipping driving member 82 is connected to the rotating shaft 81 and is used to drive the rotating shaft 81 to rotate so that one of the shelves 23 is located above the rotating shaft 81. Specifically, the flipping driving member 82 adopts a flipping motor, which is connected to the rotating shaft 81, and its main function is to drive the rotating shaft 81 to rotate. This flipping motor is a stepper motor. During operation, it rotates according to a specific rule: it rotates forward 180° for the first time, then reverses 180° for the second time, then rotates forward 180° for the third time, and reverses 180° for the fourth time, and so on in a cycle. Through this cyclic rotation method, on the one hand, it can effectively ensure that the device realizes the required flipping function and ensure the smooth progress of the thermal lamination work; on the other hand, it avoids problems caused by excessive flipping circles, especially preventing the situation where the pipeline length of the cooling mechanism 3 cannot meet the operation requirements of the device. During the device setting stage, for the pipeline length design of the cooling mechanism 3, it only needs to ensure that when the rotating shaft 81 rotates forward 180° or reverses 180°, the pipeline still has a certain surplus length. Such a design not only meets the requirements of normal operation of the device but also optimizes the use of the pipeline, improving the reliability and stability of the device.

[0047] In this embodiment, during use, the operator opens the operation window 11 and places the polyester mesh and the metal mesh 6 on the upper surfaces of the frame 21 and the heating plate 22 of the heating mechanism 2 located above the rotating shaft 81. At this time, the clamping mechanism 7 corresponding to the heating mechanism 2 quickly pre-clamps the outer edges of the polyester mesh and the metal mesh 6 to achieve positioning and fixation. The cooling mechanism 3 starts to introduce a coolant into the first water cooling channel 211 in the frame 21 to prepare for cooling the heating mechanism 2 in advance and prevent the residual heat of the heating plate 22 from affecting the mesh placed subsequently. The pressing mechanism 4 is started to tightly press the polyester mesh and the metal mesh 6 on the upper surface of the heating plate 22. The heating mechanism 2 is turned on, and the heating plate 22 starts to heat the connection area between the metal mesh and the polyester mesh to achieve heat sealing between the two. During this process, due to the presence of the first water cooling channel 211 in the frame 21, it takes away part of the heat, reduces the heat conducted by the heating plate 22 to the periphery, and reduces the heating effect on the polyester mesh outside the heat-sealing area. At the same time, the air extraction mechanism 5 is started, and its inlet is communicated with the sealed accommodation cavity in the housing 1 to extract the solvent and other volatile substances volatilized from the PI film during the heat-sealing process. When the heating mechanism 2 above completes the heat sealing, the heating mechanism 2 is turned off. Then, the flipping drive member 82 is started to drive the rotating shaft 81 to rotate, so that the shelf 23 of the heating mechanism 2 that has completed the heat sealing rotates to below the rotating shaft 81. When the shelf 23 rotates to below the rotating shaft 81, the respective clamping mechanisms 7 corresponding to the heating mechanism 2 are loosened, and the polyester mesh and the metal mesh 6 automatically fall downward under the action of gravity. At the same time, the shelf 23 of another unused heating mechanism 2 rotates to above the rotating shaft 81. Place the new polyester mesh and metal mesh to be heat-sealed on the upper surfaces of the frame 21 and the heating plate 22 of the heating mechanism 2 located above the rotating shaft 81, and repeat the operations in the above preparation, heat-sealing, and flipping stages to achieve continuous screen plate heat-sealing work. The staff only needs to place the new polyester mesh and metal mesh to be heat-sealed on the upper surfaces of the frame 21 and the heating plate 22 of the heating mechanism 2 located above the rotating shaft 81, and collect the heat-sealed polyester mesh and metal mesh that fall below at intervals of time.

[0048] In this embodiment, a dual heating mechanism 2 is adopted and switched for use through a flipping mechanism 8. When one heating mechanism 2 is performing heat-sealing work, the other heating mechanism 2 can be waiting to cool down naturally at the same time, reducing the idle time of the equipment, achieving continuous production, and greatly improving production efficiency. If there is only one heating mechanism 2, after heat-sealing is completed, it is necessary to wait for the heating mechanism 2 to cool down before placing the next polyester mesh and metal mesh 6. Therefore, the adoption of the dual heating mechanism 2 reduces the idle time of the equipment and realizes continuous production. At the same time, after heat-sealing is completed, the clamping mechanism 7 is loosened to make the heat-sealed polyester mesh and metal mesh 6 fall automatically, eliminating the need for manual removal one by one, further saving operation time and improving the continuity of production. At the same time, the design of the flipping mechanism 8 enables the two heating mechanisms 2 to work alternately in a limited space, making full use of the space inside the housing 1, making the structure of the equipment more compact, and reducing the floor area of the equipment.

[0049] Preferably, please refer to Figure 5 and Figure 6 , the flipping mechanism 8 further includes a positioning component 83. The positioning component 83 includes two positioning cylinders 831 and a positioning telescopic member 832. The two positioning cylinders 831 are respectively fixed on two opposite frames 21, and the fixed end of the positioning telescopic member 832 is fixed on the housing 1. When one of the shelves 23 is located above the rotating shaft 81 and is horizontally arranged, the movable end of the positioning telescopic member 832 can be inserted into the positioning cylinder 831 fixed on this shelf 23. In this embodiment, when the flipping driving member 82 drives the rotating shaft 81 to rotate so that one of the shelves 23 is located above the rotating shaft 81 and is horizontally arranged, the movable end of the positioning telescopic member 832 is inserted into the positioning cylinder 831 fixed on this shelf 23. This precise cooperation can ensure that the heating mechanism 2 is in an accurate working position and guarantee the position accuracy of the polyester mesh and metal mesh 6 during the heat-sealing process.

[0050] Preferably, please refer to Figure 5 and Figure 6 , a collecting plate 14 is further arranged inside the housing 1, and the collecting plate 14 is located below the shelf 23. When the flipping mechanism 8 rotates the heating mechanism 2 that has completed heat-sealing to below the rotating shaft 81 and the clamping mechanism 7 is loosened, the polyester mesh and metal mesh 6 will fall onto the collecting plate 14 under the action of gravity. The collecting plate 14 provides a centralized collecting area, enabling the heat-sealed products to be stacked together in an orderly manner. The staff only needs to collect the products from the collecting plate 14 regularly, greatly improving the efficiency of product collection.

[0051] The technical effects of the technical solution provided by Embodiment 2 include: 1. The double heating mechanism 2 is adopted and switched for use through the flipping mechanism 8. When one heating mechanism 2 is performing heat sealing work, the other heating mechanism 2 can be waiting for natural cooling simultaneously, reducing the idle time of the equipment, achieving continuous production, and greatly improving the production efficiency. The design of the flipping mechanism 8 enables the two heating mechanisms 2 to work alternately within a limited space, making full use of the space inside the housing 1, making the structure of the equipment more compact, and reducing the floor area occupied by the equipment.

[0052] 2. When the flipping drive member 82 drives the rotating shaft 81 to rotate so that one of the shelves 23 is located above the rotating shaft 81 and horizontally arranged, the movable end of the positioning telescopic member 832 is inserted into the positioning cylinder 831 fixed on the shelf 23. This precise fit can ensure that the heating mechanism 2 is in the accurate working position, guaranteeing the position accuracy of the polyester mesh cloth and the metal mesh 6 during the heat sealing process.

[0053] The specific implementation manners of the present application described above do not constitute a limitation on the protection scope of the present application. Any other corresponding changes and deformations made according to the technical concept of the present application should be included within the protection scope of the present application.

Claims

1. A high-security screen heat-sealing device, characterized in that: include: A shell (1), wherein a sealed accommodating cavity is formed in the shell (1), and an operating window (11) that can be opened or closed is provided on the shell (1); A heating mechanism (2), the heating mechanism (2) comprising a frame (21) and a heating plate (22), a first water cooling channel (211) being formed in the frame (21), the heating plate (22) being arranged in the frame (21), and the upper surfaces of the frame (21) and the heating plate (22) being used for placing a polyester mesh and a metal mesh (6); A cooling mechanism (3), the cooling mechanism (3) being used for introducing cooling liquid into the first water cooling channel (211); a pressing mechanism (4), the pressing mechanism (4) being used to press the polyester mesh and the metal mesh (6) onto the upper surface of the heating plate (22); and An air extraction mechanism (5), wherein an inlet of the air extraction mechanism (5) is in communication with the accommodating chamber.

2. The high-security screen heat-sealing device according to claim 1 is characterized in that: The heating mechanism (2) further comprises a shelf (23), wherein the shelf (23) is arranged in the shell (1), a groove (231) is provided on the shelf (23), and the frame (21) is fixed in the groove (231).

3. The high-security screen heat-sealing device according to claim 2 is characterized in that: A second water-cooling channel (232) and a third water-cooling channel (233) are formed in the shelf (23), one end of the second water-cooling channel (232) is connected to one end of the first water-cooling channel (211), and one end of the third water-cooling channel (233) is connected to the other end of the first water-cooling channel (211); The cooling mechanism (3) comprises a cooling liquid tank (31), a liquid inlet pump (32), a liquid inlet pipe (33), a liquid inlet valve (34), a liquid outlet pipe (35), a liquid outlet valve (36) and a refrigeration element (37); the cooling liquid tank (31) is used to store cooling liquid; the inlet of the liquid inlet pump (32) is connected to the cooling liquid tank (31); the outlet of the liquid inlet pump (32) is connected to one end of the liquid inlet pipe (33); the other end of the liquid inlet pipe (33) is connected to the cooling liquid tank (31); The other end of the second water-cooling channel (232) is connected, the liquid inlet valve (34) is arranged on the liquid inlet pipe (33), one end of the liquid outlet pipe (35) is connected to the other end of the third water-cooling channel (233), the other end of the liquid outlet pipe (35) is connected to the cooling liquid tank (31), the liquid outlet valve (36) is arranged on the liquid outlet pipe (35), and the refrigeration component (37) is used to cool the cooling liquid in the cooling liquid tank (31).

4. The high-security screen heat-sealing device according to claim 3 is characterized in that: The refrigeration element (37) comprises a temperature sensor (371) and a semiconductor refrigeration element (372); the temperature sensor (371) is arranged in the cooling liquid tank (31); the cold end of the semiconductor refrigeration element (372) is located in the cooling liquid tank (31); and the hot end of the semiconductor refrigeration element (372) is located outside the cooling liquid tank (31).

5. The high-security screen heat-sealing device according to claim 1 is characterized in that: The pressing mechanism (4) comprises a pressing cylinder (41) and a pressing plate (42), wherein the fixed end of the pressing cylinder (41) is fixed to the housing (1), and the output end of the pressing cylinder (41) is fixedly connected to the pressing plate (42), and the pressing plate (42) is used to press onto the polyester mesh and the metal mesh (6) placed on the heating plate (22).

6. The high-security screen heat-sealing device according to claim 5, characterized in that: The shell (1) is provided with an air inlet, a filter element (12) is arranged in the air inlet, and the shell (1) is also provided with an air exhaust port (13); The exhaust mechanism (5) comprises an air suction hood (51), an exhaust fan (52) and an exhaust gas treatment device (53); the air suction hood (51) is fixed above the pressure plate (42); the outlet of the air suction hood (51) is connected to the air inlet; the inlet of the exhaust fan (52) is connected to the air inlet; and the outlet of the exhaust fan (52) is connected to the inlet of the exhaust gas treatment device (53).

7. The high-security screen heat-sealing device according to claim 2, characterized in that: It also includes a plurality of clamping mechanisms (7), wherein the clamping mechanisms (7) include a fixed column (71), a swing rod (72), a pressure rod (73) and a telescopic driving member (74), wherein the fixed column (71) is fixed on the frame (21), the middle part of the swing rod (72) is hinged to the fixed column (71), one end of the pressure rod (73) is fixed to one end of the swing rod (72), one end of the telescopic driving member (74) is hinged to the fixed column (71), and the other end of the telescopic driving member (74) is hinged to the other end of the pressure rod (73).

8. The high-security screen heat-sealing device according to claim 7, characterized in that: The invention also comprises a flipping mechanism (8), wherein the flipping mechanism (8) comprises a rotating shaft (81) and a flipping driving member (82), wherein the rotating shaft (81) is rotatably arranged in the shell body (1) and extends in the horizontal direction, and two heating mechanisms (2) are respectively arranged on both sides of the rotating shaft (81), and the shelves (23) of the two heating mechanisms (2) are respectively fixed on both sides of the rotating shaft (81), and grooves (231) are respectively provided on the two shelves (23), and a frame (21) is respectively fixed in each of the grooves (231), and a heating plate (22) is installed in each of the frames (21), and a plurality of clamping mechanisms (7) are arranged on each of the frames (21), and the flipping driving member (82) is connected to the rotating shaft (81) and is used to drive the rotating shaft (81) to rotate so that one of the shelves (23) is located above the rotating shaft (81).

9. The high-security screen heat-sealing device according to claim 8, characterized in that: The flip mechanism (8) further comprises a positioning assembly (83), wherein the positioning assembly (83) comprises two positioning cylinders (831) and a positioning telescopic member (832), wherein the two positioning cylinders (831) are respectively fixed on two opposite frames (21), and the fixed end of the positioning telescopic member (832) is fixed on the shell (1), and when one of the shelves (23) is located above the rotating shaft (81) and is arranged horizontally, the movable end of the positioning telescopic member (832) can be inserted into the positioning cylinder (831) fixed on the shelf (23).

10. The high-security screen heat-sealing device according to claim 8, characterized in that: A collecting plate (14) is also provided in the shell (1), and the collecting plate (14) is located below the shelf (23).

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