Full-automatic silica gel coating machine facilitating drying

Abstract

The utility model relates to the technical field of coating equipment, concretely to a full -automatic silica gel coating machine convenient to drying, including coating main part and drying mechanism, coating main part is located one end of drying mechanism, and the other end of drying mechanism is provided with winding mechanism, and the inside of support mechanism is provided with pretreatment mechanism between coating main part and drying mechanism, the utility model discloses a pretreatment mechanism is set up, and the wet heat waste gas of drying mechanism is used to heat preheating roller, realizes the preheating of the non -coating surface of base material before coating, utilizes waste heat, improves energy utilization efficiency, reduces energy consumption, in addition through the cooperation of helical air -guide blade and liquid guide box, realizes the condensation and separation of moisture in the wet hot airflow in the preheating process, and the condensed water is automatically guided out through the rotation structure, realizes the pre -dehumidification function, reduces the load of external dehumidification equipment, and improves system dehumidification efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coating equipment technology, specifically a fully automatic silicone coating machine that is easy to dry. Background Technology

[0002] Fully automatic silicone coating machines are widely used in textiles, packaging, automotive interiors, and other fields. Their main function is to uniformly coat the surface of flexible substrates such as fabrics and films with a layer of liquid silicone of a specific thickness. The equipment typically includes core components such as an unwinding mechanism, a tension control system, a coating head, a drying system, and a rewinding mechanism, depending on the process flow. Its working principle is as follows: The substrate is drawn from the unwinding device, passes through tension rollers and guide rollers into the coating area, and a precision coating head (such as a comma doctor blade or an anilox roller) uniformly applies silicone to its surface. Subsequently, the coated wet film substrate is sent to the drying system. A typical drying system is a continuous oven, where the substrate is usually conveyed in a suspended manner to avoid contact with the guide rollers and damage to the uncured coating surface.

[0003] The inventors have discovered at least the following problems in the prior art: In order to remove the moisture evaporated during the coating process, the drying mechanism of the existing fully automatic silicone coating machine needs to continuously release high-humidity air containing a large amount of waste heat into the outside. This part of the heat energy is not effectively recovered and utilized, which directly leads to energy waste and high equipment operating costs. Secondly, the existing equipment's dehumidification system faces enormous pressure. The high-temperature saturated moisture generated inside the oven is directly introduced into the dehumidification device (such as a condenser dehumidifier), which requires the dehumidification device to consume a large amount of energy for cooling and dehumidification, resulting in a heavy processing load.

[0004] Therefore, this solution provides a fully automatic silicone coating machine that is easy to dry, in order to solve the above problems. Utility Model Content

[0005] To address the problems of low energy efficiency and heavy load on dehumidification systems in existing technologies, this invention provides a fully automatic silicone coating machine that facilitates drying, thus solving the aforementioned issues.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A fully automatic silicone coating machine that is easy to dry includes a coating body and a drying mechanism. The coating body is located at one end of the drying mechanism, and a winding mechanism is provided at the other end of the drying mechanism. A support mechanism is provided between the coating body and the drying mechanism, and a pretreatment mechanism is provided on the inner side of the support mechanism. The support mechanism includes a support and drainage guide plates fixedly connected to the inner walls on both sides of the support; the pretreatment mechanism includes a preheating roller and a spiral air guide plate fixedly connected inside the preheating roller, with an air outlet box and an air inlet box respectively provided at both ends of the spiral air guide plate, and a connecting ring frame fixedly connected to both ends of the preheating roller; the coating body includes a frame, the drying mechanism includes an oven tunnel and infrared hot air nozzles evenly distributed inside the oven tunnel, a dehumidifying fan installed at the top of the oven tunnel, and the frame and one side of the oven tunnel respectively fixedly connected to both sides of the support.

[0007] Preferably, the inner side of the spiral air guide plate is an inner air guide cavity, the outer side of the spiral air guide plate is an outer liquid guide cavity, and a liquid guide box is evenly spirally wrapped around the outer side of the spiral air guide plate. The liquid guide box is inserted into the spiral air guide plate, one end of the liquid guide box is located in the inner air guide cavity, and the other part is located in the outer liquid guide cavity.

[0008] Preferably, the liquid guiding box has an inlet and an outlet at both ends, which are connected to each other. The inlet is located in the inner air guiding cavity, and the outlet is located in the outer liquid guiding cavity.

[0009] Preferably, the two ends of the spiral air guide plate are respectively connected to the interior of the air outlet box and the air inlet box. Universal joint one and universal joint two are respectively provided on the side of the air outlet box and the air inlet box away from the spiral air guide plate. Universal joint one and universal joint two pass through the fixed connecting ring frame. Universal joint one and universal joint two pass through and are rotatably connected to the bracket. Universal joint one is connected to the output end of the drive motor.

[0010] Preferably, a connecting ring is fixedly connected to the inner side of the drainage guide plate, the connecting ring is inserted into the inner side of the connecting ring frame, an oil seal is embedded between the connecting ring and the connecting ring frame, and a drainage valve pipe is provided at the bottom of the drainage guide plate, with one end of the drainage valve pipe located inside the drainage guide plate and the other end located at the bottom of the drainage guide plate.

[0011] Preferably, a coating roller assembly is provided on the inner side of the frame, and an extrusion coating head is provided on one side of the coating roller assembly.

[0012] Preferably, the two sides of the dehumidifying fan are connected to the interior of the drying oven tunnel through ducts, and the other two sides of the dehumidifying fan are respectively provided with a three-way valve and a second air guide pipe. One end of the three-way valve is externally connected to the first air guide pipe.

[0013] Preferably, the first air guide tube and the second air guide tube are respectively connected to the second universal joint and the first universal joint. Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a pretreatment mechanism to heat the preheating roller with the hot, humid exhaust gas from the drying mechanism, thereby preheating the uncoated surface of the substrate before coating. By utilizing waste heat, energy utilization efficiency is improved and energy consumption is reduced.

[0014] This invention utilizes the combination of spiral air guide plates and liquid guide boxes to condense and separate moisture in the hot and humid airflow during the preheating process. The condensate is automatically discharged through a rotating structure, achieving a pre-dehumidification function, reducing the load on external dehumidification equipment, and improving the system's dehumidification efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the coating body of this utility model; Figure 3 This is a schematic diagram of the drying mechanism of this utility model; Figure 4 This is a schematic diagram of the support mechanism of this utility model; Figure 5 This utility model Figure 4 A schematic diagram of the middle section; Figure 6 This is a schematic diagram of the internal structure of the pretreatment mechanism of this utility model; Figure 7 This utility model Figure 6 A schematic diagram of the middle section; Figure 8 This is a schematic diagram of the liquid guiding box of this utility model.

[0016] In the picture: 1. Coating body; 11. Frame; 12. Coating roller assembly; 13. Extrusion coating head; 2. Rewinding mechanism; 3. Drying mechanism; 31. Drying oven tunnel; 32. Infrared hot air nozzle; 33. Dehumidifying fan; 34. Air duct one; 35. Air duct two; 36. Conduit; 37. Three-way valve; 4. Support mechanism; 41. Support; 42. Drive motor; 44. Drain guide plate; 45. Connecting ring; 46. Oil seal; 47. Drain valve pipe; 5. Pretreatment mechanism; 51. Preheating roller; 52. Connecting ring frame; 53. Spiral air guide plate; 531. Inner air guide cavity; 532. Outer liquid guide cavity; 54. Air outlet box; 541. Universal joint one; 55. Air inlet box; 551. Universal joint two; 56. Liquid guide box; 561. Liquid inlet; 562. Liquid outlet. Detailed Implementation

[0017] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all of them. Based on the embodiments of the present utility model, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0018] Embodiment: Please refer to Figure 1-8 The shown fully automatic silicone coating machine convenient for drying comprises a coating main body 1 and a drying mechanism 3, the coating main body 1 is located at one end of the drying mechanism 3, the other end of the drying mechanism 3 is provided with a winding mechanism 2, a support mechanism 4 is arranged between the coating main body 1 and the drying mechanism 3, and a preprocessing mechanism 5 is arranged on the inner side of the support mechanism 4; The support mechanism 4 comprises a support 41 and drainage guide plates 44 fixedly connected to the inner walls of both sides of the support 41; The preprocessing mechanism 5 comprises a preheating roller 51 and spiral gas guide sheets 53 fixedly connected inside the preheating roller 51, the two ends of the spiral gas guide sheet 53 are respectively provided with an air outlet box 54 and an air inlet box 55, and both ends of the preheating roller 51 are fixedly connected with connecting ring frames 52; The coating main body 1 comprises a frame 11, the drying mechanism 3 comprises an oven tunnel 31 and infrared hot air nozzles 32 uniformly arranged and distributed in the oven tunnel 31, a dehumidifying fan 33 is installed at the top of the oven tunnel 31, and both sides of the support 41 are respectively and fixedly connected to one side of the frame 11 and one side of the oven tunnel 31; Wherein, controllers are arranged on the outside of the frame 11 and the outside of the oven tunnel 31 respectively. The controller of the frame 11 is used for controlling the operation of the whole equipment, while the controller outside the oven tunnel 31 controls the infrared hot air nozzles 32 inside the oven tunnel 31 in sections.

[0019] In this embodiment, the inner side of the spiral gas guide sheet 53 is an inner gas guide cavity 531, the outer side of the spiral gas guide sheet 53 is an outer liquid guide cavity 532, the outer side of the spiral gas guide sheet 53 is uniformly spirally surrounded by liquid guide boxes 56, the liquid guide boxes 56 are inserted into the spiral gas guide sheet 53, one end of the liquid guide box 56 is located in the inner gas guide cavity 531, and the other part is located in the outer liquid guide cavity 532; Wherein, the cross section of the spiral gas guide sheet 53 is a semi-frame shape similar to the Chinese character "凵", so that the hot and humid gas can fully contact the inner wall of the preheating roller 51.

[0020] In this embodiment, a liquid inlet 561 and a liquid outlet 562 are respectively opened at both ends of the liquid guide box 56, the liquid inlet 561 and the liquid outlet 562 are communicated with each other, the liquid inlet 561 is located in the inner gas guide cavity 531, and the liquid outlet 562 is located in the outer liquid guide cavity 532; The liquid inlet 561 is aligned with the overall rotation direction of the pretreatment mechanism 5, so that cooling water can be introduced into it during rotation, thereby separating the hot and humid airflow from the cooling water.

[0021] In this embodiment, the two ends of the spiral air guide plate 53 are respectively connected to the interior of the air outlet box 54 and the air inlet box 55. The side of the air outlet box 54 and the air inlet box 55 away from the spiral air guide plate 53 is respectively provided with universal joint one 541 and universal joint two 551. Universal joint one 541 and universal joint two 551 both pass through the fixed connecting ring frame 52. Universal joint one 541 and universal joint two 551 both pass through and rotatably connect the bracket 41. Universal joint one 541 is connected to the output end of the drive motor 42. Universal joint 1 541 and universal joint 2 551 are respectively connected to the interior of air outlet box 54 and air inlet box 55 to facilitate the entry and exit of hot and humid airflow. Universal joint 1 541 and universal joint 2 551 are also the rotation center of the pretreatment mechanism 5 as a whole. A pulley is installed on the periphery of universal joint 1 541, which is connected to the pulley at the output end of drive motor 42 through a belt, so that drive motor 42 can drive the entire pretreatment mechanism 5 to rotate when it is running.

[0022] In this embodiment, a connecting ring 45 is fixedly connected to the inner side of the drain guide plate 44. The connecting ring 45 is inserted into the inner side of the connecting ring frame 52. An oil seal 46 is embedded between the connecting ring 45 and the connecting ring frame 52. A drain valve pipe 47 is provided at the bottom of the drain guide plate 44. One end of the drain valve pipe 47 is located inside the drain guide plate 44, and the other end is located at the bottom of the drain guide plate 44. The connecting ring 45 is used to support the rotation of the pretreatment mechanism 5, while the oil seal 46 is used to seal and prevent leakage of liquid and gas in the preheating roller 51; the bottom of the drain valve pipe 47 has a solenoid valve, which can release the coolant in the preheating roller 51.

[0023] In this embodiment, a coating roller assembly 12 is provided on the inner side of the frame 11, and an extrusion coating head 13 is provided on one side of the coating roller assembly 12. The coating roller assembly 12 has an unwinding component at its bottom, which allows the fabric to be loosened and coated as it passes around the periphery of the coating roller assembly 12 and then passes one side of the extrusion coating head 13.

[0024] In this embodiment, the two sides of the dehumidifying fan 33 are connected to the interior of the drying oven tunnel 31 through the conduit 36. The other two sides of the dehumidifying fan 33 are respectively provided with a three-way valve 37 and a second air guide pipe 35. One end of the three-way valve 37 is externally connected to the first air guide pipe 34. The top of the three-way valve 37 is connected to an external dehumidification device via a flexible hose, and there is a solenoid valve at the connection point. In addition, a solenoid valve is also installed at the connection point of the three-way valve 37 to the air duct 34. Through the operation of the external controller of the frame 11, the two solenoid valves are opened and closed alternately, so that the hot and humid airflow in the oven tunnel 31 can be pre-dehumidified by the pretreatment mechanism 5.

[0025] In this embodiment, the first air duct 34 and the second air duct 35 are respectively connected to the second universal joint 551 and the first universal joint 541; Among them, the first air guide pipe 34 and the second air guide pipe 35 can first guide the hot and humid airflow into the preheating roller 51 and then guide it back into the dehumidifying fan 33.

[0026] The working principle of this utility model is as follows: After the fabric is coated, it passes through the periphery of the preheating roller 51 and then enters the interior of the drying oven tunnel 31 for drying. Finally, it is wound up by the winding mechanism 2. During the drying process, the moisture in the fabric and silicone will be carried away by the hot airflow. This part of the hot and humid gas is introduced into the universal joint 551 at one end of the preheating roller 51 through the dehumidifying fan 33, the three-way valve 37 and the air guide pipe 34, and then enters the interior of the preheating roller 51. The hot and humid airflow will flow along the inner air guide cavity 531 on the inner side of the spiral air guide plate 53, so that the hot and humid airflow can evenly conduct heat to the surface of the preheating roller 51 through the spiral air guide plate 53 and the liquid guide box 56, thereby raising the temperature of the preheating roller 51 and preheating the uncoated surface above it. The waste heat to be discharged is used to raise the initial temperature of the material, thereby improving the energy efficiency of the drying process. At the same time, through preheating, the material can be gradually raised to a more suitable initial reaction temperature, promoting uniform curing from the surface to the inside, thereby improving the quality and consistency of the final product. When the hot and humid gas passes through the inner air guide cavity 531, because the spiral air guide 53, the liquid guide box 56, and the preheating roller 51 are all made of heat-conducting materials, some of the moisture in the hot and humid gas will condense on the surface of the inner air guide cavity 531 and part of the liquid guide box 56. As the operation of the drive motor 42 causes the preheating roller 51 to rotate continuously clockwise, the condensed water will always be located at the bottom of the preheating roller 51. With the rotating liquid guide box 56, the condensed water can enter the outer liquid guide cavity 532 around the spiral air guide 53 through the liquid inlet 561 and the liquid outlet 562. The rotation will also transport the condensate to the drain valve pipe 47. With the connecting ring 45 fitting inside the connecting ring frame 52 and sealed by the oil seal 46, the drain valve pipe 47 can be opened to discharge the condensate when the preheating roller 51 rotates. This can both pre-dehumidify and reduce the pressure of the external dehumidification equipment, and there is no need to stop the machine when draining.

[0027] The coating body 1, winding mechanism 2, drying mechanism 3 and drive motor 42 used in this utility model are all existing known electrical devices, and all can be purchased and used directly on the market. Their structure, circuit and control principle are all existing known technologies. Therefore, the structure, circuit and control principle of the coating body 1, winding mechanism 2, drying mechanism 3 and drive motor 42 will not be described in detail here.

[0028] All standard parts used in this application can be purchased from the market. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art and are also general components, which are common knowledge in this field.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully automatic silicone coating machine that facilitates drying, comprising a coating body (1) and a drying mechanism (3), characterized in that: The coating body (1) is located at one end of the drying mechanism (3), and the other end of the drying mechanism (3) is provided with a winding mechanism (2). A support mechanism (4) is provided between the coating body (1) and the drying mechanism (3), and a pretreatment mechanism (5) is provided on the inner side of the support mechanism (4). The support mechanism (4) includes a support (41) and a drainage guide plate (44) fixedly connected to the inner walls on both sides of the support (41). The pretreatment mechanism (5) includes a preheating roller (51) and a spiral air guide plate (53) fixedly connected inside the preheating roller (51). An air outlet box (54) and an air inlet box (55) are respectively provided at both ends of the spiral air guide plate (53). A connecting ring frame (52) is fixedly connected to both ends of the preheating roller (51). The coating body (1) includes a frame (11), the drying mechanism (3) includes an oven tunnel (31) and infrared hot air nozzles (32) evenly distributed inside the oven tunnel (31), a dehumidifying fan (33) is installed on the top of the oven tunnel (31), and the two sides of the bracket (41) are respectively fixedly connected to the frame (11) and one side of the oven tunnel (31).

2. The fully automatic silicone coating machine for easy drying according to claim 1, characterized in that: The inner side of the spiral air guide plate (53) is the inner air guide cavity (531), and the outer side of the spiral air guide plate (53) is the outer liquid guide cavity (532). The outer side of the spiral air guide plate (53) is uniformly spirally surrounded by a liquid guide box (56). The liquid guide box (56) is inserted into the spiral air guide plate (53). One end of the liquid guide box (56) is located in the inner air guide cavity (531), and the other part is located in the outer liquid guide cavity (532).

3. The fully automatic silicone coating machine for easy drying according to claim 2, characterized in that: The liquid guide box (56) has an inlet (561) and an outlet (562) at both ends, respectively. The inlet (561) and the outlet (562) are connected to each other. The inlet (561) is located in the inner air guide cavity (531), and the outlet (562) is located in the outer liquid guide cavity (532).

4. The fully automatic silicone coating machine for easy drying according to claim 1, characterized in that: The two ends of the spiral air guide plate (53) are respectively connected to the interior of the air outlet box (54) and the air inlet box (55). On the side of the air outlet box (54) and the air inlet box (55) away from the spiral air guide plate (53), there are universal joint one (541) and universal joint two (551). Universal joint one (541) and universal joint two (551) both pass through the fixed connecting ring frame (52). Universal joint one (541) and universal joint two (551) both pass through and rotatably connect the bracket (41). Universal joint one (541) is connected to the output end of the drive motor (42).

5. The fully automatic silicone coating machine for easy drying according to claim 1, characterized in that: A connecting ring (45) is fixedly connected to the inner side of the drainage guide plate (44). The connecting ring (45) is inserted into the inner side of the connecting ring frame (52). An oil seal (46) is embedded between the connecting ring (45) and the connecting ring frame (52). A drainage valve pipe (47) is provided at the bottom of the drainage guide plate (44). One end of the drainage valve pipe (47) is located inside the drainage guide plate (44), and the other end is located at the bottom of the drainage guide plate (44).

6. The fully automatic silicone coating machine for easy drying according to claim 1, characterized in that: The inner side of the frame (11) is provided with a coating roller group (12), and a pressure coating head (13) is provided on one side of the coating roller group (12).

7. The fully automatic silicone coating machine for easy drying according to claim 1, characterized in that: The two sides of the dehumidifying fan (33) are connected to the interior of the oven tunnel (31) through conduits (36). The other two sides of the dehumidifying fan (33) are respectively provided with a three-way valve (37) and a second air guide pipe (35). One end of the three-way valve (37) is connected to the first air guide pipe (34).

8. The fully automatic silicone coating machine for easy drying according to claim 7, characterized in that: The first air duct (34) and the second air duct (35) are respectively connected to the second universal joint (551) and the first universal joint (541).

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