Silicone oil coating device for plastic sheet

Abstract

The invention relates to a silicone oil coating device for a plastic sheet. The silicone oil coating device comprises a rack, a first mounting plate, a second mounting plate, a pressing mechanism, a pressing roller, a rotating roller, a transition roller, a first storage pool, a second storage pool, a circulating assembly and a flow control assembly. Through the mutual position relation between the output end of the flow control assembly and the oil discharging opening, the opening degree of the oil discharging opening is controlled, the silicone oil coating amount is controlled, it is ensured that silicone oil is sufficiently spread on the surface of a plastic sheet, meanwhile, bubbles are avoided as much as possible, the surface quality of a final finished plastic box cover is improved, and the production efficiency is improved. And lots of silicone oil raw materials are saved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic sheet processing, and in particular to a silicone oil coating device for a plastic sheet. Background Art

[0002] In the blister production process of plastic box covers, in order to make the box covers have anti-fog effect, a single-sided or double-sided anti-fog layer is formed for the plastic box covers by silicone oil coating. Under the existing equipment and process conditions, silicone oil is pumped to the surface of the plastic sheet through a catheter, and the silicone oil is driven and spread flat under the clamping action of the upper and lower guide rollers, so that the silicone oil is coated on the surface of the plastic sheet, and then dried to obtain the anti-fog layer. In this way, in order to ensure the quality and effect of silicone oil coating, a large flow of silicone oil is required, and the silicone oil coating obtained is thicker. After the excess silicone oil flows down the surface of the plastic sheet, a small part adheres to the guide roller and is thrown out, and most of it enters the collection pool for recycling. In this process, due to the high temperature of the plastic sheet itself after production, the silicone oil releases bubbles easily, and the pumping device provides impact force and generates a large amount of air when recycling silicone oil, resulting in a large number of bubbles in the reused silicone oil, and a large number of bubbles are also gathered on the collection pool, which affects the quality of the coating formed by the final silicone oil coating on the plastic sheet. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a silicone oil coating device for plastic sheets, which can reduce the generation of bubbles during coating, improve the coating quality, and save a large amount of silicone oil.

[0004] The technical solution of the present invention is: a silicone oil coating device for plastic sheets, comprising a frame, a first mounting plate, a second mounting plate, a pressing mechanism, a pressing roller, a rotating roller, a transition roller, a first storage tank, a second storage tank, a circulation component and a flow control component, wherein the first mounting plate and the second mounting plate are fixedly connected to the upper end of the frame, one on the left and the other on the right, the upper ends of the first mounting plate and the second mounting plate are connected through a top plate, the pressing mechanism is installed on the top plate, the output end of the pressing mechanism faces downward and passes through the top plate, the pressing roller is rotatably connected to the output end of the pressing mechanism, the rotating roller is rotatably connected between the first mounting plate and the second mounting plate, the pressing roller can abut against the rotating roller downward, the first mounting plate and the second mounting plate are fixedly connected to the upper end of the frame ... A transition frame is rotatably connected between the two mounting plates, and a transition roller is rotatably connected to the transition frame. The transition roller can swing up and down in front of the lower pressure roller and the rotating roller. The first storage tank and the second storage tank are fixedly connected between the first mounting plate and the second mounting plate, one above and one below. The first storage tank is located above the lower pressure roller, and the second storage tank is located below the rotating roller. The circulation component is fixedly connected to the lower end of the frame, and the two ends of the circulation component are respectively connected to the first storage tank and the second storage tank. The flow control component is installed on the upper ends of the first mounting plate and the second mounting plate. A lower oil port is provided in the first storage tank, and the lower oil port faces between the lower pressure roller and the transition roller. The output end of the flow control component can be inserted into the lower oil port.

[0005] Furthermore, an oil lowering pipe is provided at the lower end of the oil lowering port.

[0006] Furthermore, the pressing mechanism includes a pressing motor, a screw rod, a pressing plate, a guide column and a pressing frame, the pressing motor is installed on the top plate, the output end of the pressing motor faces downward and is connected to the screw rod, the screw rod is transmission-connected to the pressing plate, both ends of the pressing plate are respectively connected to the guide columns, the lower end of the guide column is connected to the pressing frame, the pressing roller is rotatably connected to the pressing frame, the first mounting plate and the second mounting plate are symmetrically provided with notches, the upper ends of the first mounting plate and the second mounting plate are both provided with guide holes connected to the notches, and the guide columns are respectively slidably connected to the guide holes.

[0007] Furthermore, a limiting ring is provided at the lower end of the screw rod.

[0008] Furthermore, both ends of the pressing frame are located in the notch.

[0009] Furthermore, a connecting shaft is provided at one end of the rotating roller.

[0010] Furthermore, an adjusting rod is threadedly connected to the middle portion of the flow control component, and the lower end of the adjusting rod can be inserted into the lower oil port.

[0011] Furthermore, the lower oil port is narrowed downward, and the lower end of the adjustment rod is narrowed correspondingly to the lower oil port.

[0012] Furthermore, an anti-slip knob is provided at the upper end of the adjusting rod.

[0013] Furthermore, the flow control component includes a connecting plate, a column, a spring, a nut and a support rod, and the column, spring, nut and support rod are symmetrically arranged on the first mounting plate and the second mounting plate, and the column is symmetrically distributed on the upper ends of the first mounting plate and the second mounting plate. The connecting plate is provided with symmetrical through holes, and the through holes are slidably connected to the columns. The nut is connected to the upper end of the column by a thread, and the spring is elastically connected between the nut and the connecting plate. The adjusting rod is threadedly connected to the middle part of the connecting plate, and multiple sliding seats are provided on the sides of the first mounting plate and the second mounting plate. The support rod is symmetrically distributed and slidably connected to the multiple sliding seats on the sides of the first mounting plate and the second mounting plate. Eccentric wheels are provided at both ends of the transition frame, and the support rod abuts against the eccentric wheel up and down, and the connecting plate abuts against the support rod up and down.

[0014] Furthermore, a reduction box is provided on the side of the second mounting plate, and the reduction box is transmission-connected to the eccentric wheel.

[0015] Compared with the prior art, the advantages of the present invention are: by controlling the relative position relationship between the output end of the flow control component and the lower oil port, the opening of the lower oil port is controlled, the amount of silicone oil applied is controlled, and the silicone oil is ensured to be sufficiently spread on the surface of the plastic sheet while avoiding the generation of bubbles as much as possible, thereby improving the surface quality of the final finished plastic box cover and saving a large amount of silicone oil raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the position of the oil lower port of the present invention;

[0019] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0020] Figure 4 It is a working principle diagram of the present invention.

[0021] Among them: 1. frame; 2. first mounting plate; 3. second mounting plate; 4. top plate; 5. motor; 6. screw rod; 7. limit ring; 8. lower pressure plate; 9. guide column; 10. lower pressure frame; 11. lower pressure roller; 12. rotating roller; 13. transition frame; 14. transition roller; 15. eccentric wheel; 16. support rod; 17. slide seat; 18. connecting plate; 19. column; 20. spring; 21. nut; 22. adjustment rod; 23. anti-slip knob; 24. lower oil pipe; 25. connecting shaft; 26. reduction box; 27. circulation component; 28. first storage tank; 2801, lower oil port; 29. ​​second storage tank; 30. plastic sheet; 31. silicone oil; 32. notch. DETAILED DESCRIPTION

[0022] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0023] like Figure 1-4As shown, a silicone oil coating device for plastic sheets comprises a frame 1, a first mounting plate 2, a second mounting plate 3, a pressing mechanism, a pressing roller 11, a rotating roller 12, a transition roller 14, a first storage tank 28, a second storage tank 29, a circulation component 27 and a flow control component, wherein the first mounting plate 2 and the second mounting plate 3 are fixedly connected to the upper end of the frame 1 on the left and the right, the upper ends of the first mounting plate 2 and the second mounting plate 3 are connected through a top plate 4, the pressing mechanism is installed on the top plate 4, the output end of the pressing mechanism faces downward and passes through the top plate 4, the pressing roller 11 is rotatably connected to the output end of the pressing mechanism, the rotating roller 12 is rotatably connected between the first mounting plate 2 and the second mounting plate 3, the pressing roller 11 can abut against the rotating roller 12 downward, and the plastic sheet 30 is moved from the pressing roller 11 to the rotating roller 12. The first mounting plate 2 and the second mounting plate 3 are rotatably connected with a transition frame 13, and the transition roller 14 is rotatably connected to the transition frame 13. The transition roller 14 can swing up and down in front of the lower pressure roller 11 and the rotating roller 12. The upper end of the transition roller 14 is higher than the rotating roller 12. The plastic sheet 30 passes around the transition roller 14 from the upper end and is sent to between the lower pressure roller 11 and the rotating roller 12, forming a downward angle; the first storage tank 28 and the second storage tank 29 are fixedly connected between the first mounting plate 2 and the second mounting plate 3, one above and one below, the first storage tank 28 is located above the lower pressure roller 11, and the second storage tank 29 is located below the rotating roller 12. The circulation component 27 is fixedly connected to the lower end of the frame 1, and the two ends of the circulation component 27 are respectively connected to the first storage tank The first storage tank 28 and the second storage tank 29 are connected, and an oil outlet 2801 is provided in the first storage tank 28, and the oil outlet 2801 faces between the lower pressure roller 11 and the transition roller 14. Silicone oil 31 is added to the first storage tank 28, and the silicone oil 31 flows to the surface of the plastic sheet 30 through the oil outlet 2801. Under the joint clamping of the lower pressure roller 11 and the rotating roller 12 on the plastic sheet 30, and under the blocking of the silicone oil 31 by the lower pressure roller 11, the silicone oil 31 is evenly spread at the front end of the lower pressure roller 11 and coated on the surface of the plastic sheet 30, and only a small amount of silicone oil 31 is allowed to adhere to the surface of the plastic sheet 30 under the pressure of the lower pressure roller 11, thereby saving the amount of silicone oil 31; during the coating process of silicone oil 31, if the amount of silicone oil 31 is large, part of the silicone oil 31 will flow from the plastic sheet 30 to the surface of the plastic sheet 30. 0 flows out from both sides, or adheres to the surface of the lower pressure roller 11 and the rotating roller 12, and accumulates and drips over time, and is collected by the second storage tank 29, and then the silicone oil 31 is recycled through the circulation component 27; the first storage tank 28 is correspondingly equipped with a liquid level sensor, an oil replenishment pipeline, etc., and the circulation component 27 is built with a liquid pump, a filter, etc., which are all existing technologies, ensuring the adequacy and timeliness of the supply of silicone oil 31; the flow control component is installed on the upper end of the first mounting plate 2 and the second mounting plate 3, and the output end of the flow control component can be inserted into the lower oil port 2801. The opening of the lower oil port 2801 is controlled by the mutual position relationship between the output end of the flow control component and the lower oil port 2801, thereby controlling the flow of the silicone oil 31;After the plastic sheet 30 is formed into a plastic box by suction molding, both sides of the plastic sheet 30 are waste materials that are only used for connection and fixation. After the plastic box is demoulded, the waste materials on both sides of the plastic sheet 30 are recycled. During the silicone oil 31 coating stage, the flow rate of the silicone oil 31 can be adjusted until the silicone oil 31 is just spread to the edge of the plastic sheet 30, and the silicone oil 31 can be avoided from overflowing from both sides of the plastic sheet 30 as much as possible, that is, the silicone oil 31 is ensured to be coated and used up on the plastic sheet 30 at one time, reducing the number of times the silicone oil 31 is reused, and avoiding the silicone oil 31 from adhering to too much plastic powder and workshop dust on the surface of the plastic sheet 30, which may cause changes in its physical properties such as viscosity, and avoid affecting the coating and film-forming effect of the silicone oil 31 after drying. Since the plastic sheet 30 is directly coated with silicone oil 31 after being produced by an extruder, the plastic sheet 30 has a relatively high residual temperature. When the silicone oil 31 is spread and coated on the surface of the plastic sheet 30, the thickness is relatively small, that is, the coating is relatively thin, resulting in the silicone oil 31 coating being quickly heated by the plastic sheet 30, and the gas in the silicone oil 31 rapidly expands and generates bubbles, which affects the uniformity of the silicone oil 31 coating and other quality indicators, and affects the anti-fogging effect of the final finished plastic box cover; for a small amount of bubbles, the bubbles are easily destroyed under the pressing action of the lower pressing roller 11 on the plastic sheet 30, and the effect on the quality of the coating on the surface of the plastic sheet 30 after coating is minimal. However, if the supply amount of silicone oil 31 is large, not only will the plastic sheet 30 be heated, but also the silicone oil 31 coating will be heated. The surface coating of the plastic sheet 30 is too thick, which wastes raw materials and causes a large amount of silicone oil 31 to flow down from both sides of the plastic sheet 30, arousing bubbles in the second storage tank 29, and increasing the frequency of recycling of the silicone oil 31. After the silicone oil 31 circulates repeatedly, a large number of bubbles will appear in the first storage tank 28 and the second storage tank 29, which will eventually affect the quality indicators such as the uniformity of the surface coating of the plastic sheet 30. In this case, a flow control component is used to control the coating amount of the silicone oil 31 to ensure that the silicone oil 31 is sufficiently spread on the surface of the plastic sheet 30 while avoiding the generation of bubbles as much as possible, thereby improving the surface quality of the final finished plastic box cover and saving a large amount of silicone oil 31 raw materials. The lower end of the oil outlet 2801 is provided with an oil pipe 24, which can extend downward to a position close to the plastic sheet 30, which can prevent the silicone oil 31 from flowing out along the lower end surface of the first storage tank 28, and can also reduce the drop between the oil pipe 24 and the plastic sheet 30, reduce the impact force of the silicone oil 31 on the surface of the plastic sheet 30, and prevent the silicone oil 31 from arousing bubbles on the surface of the plastic sheet 30 or affecting the thickness of the coating at the impact point, so as to ensure that the thickness of the surface coating of the plastic sheet 30 is consistent at all places after passing through the lower pressure roller 11. ;

[0024] In the above embodiment, the pressing mechanism includes a pressing motor 5, a screw rod 6, a pressing plate 8, a guide column 9 and a pressing frame 10. The pressing motor 5 is installed on the top plate 4, and the output end of the pressing motor 5 faces downward and is connected to the screw rod 6. The screw rod 6 is transmission-connected to the pressing plate 8. The two ends of the pressing plate 8 are respectively connected to the guide columns 9. The lower end of the guide column 9 is connected to the pressing frame 10. The pressing roller 11 is rotatably connected to the pressing frame 10. The first mounting plate 2 and the second mounting plate 3 are symmetrically provided with notches 32. The upper ends of the first mounting plate 2 and the second mounting plate 3 are both provided with guide holes connected to the notches 32. The guide columns 9 are respectively slidably connected to the guide holes. Under the drive of the pressing motor 5, the screw rod 6 rotates to drive the pressing plate 8 to rise and fall, thereby driving the pressing frame 10 to rise and fall under the action of the guide columns 9 and the guide holes, thereby adjusting the positional relationship between the pressing roller 11 and the rotating roller 12 The lower pressing roller 11, rotating roller 12 and transition roller 14 used in the device are all made of plastic material, which can provide a certain friction force for rolling connection with the plastic sheet 30, and can also adjust the tightness of the clamping when the lower pressing roller 11 and the rotating roller 12 clamp the plastic sheet 30 together, thereby controlling the amount of silicone oil 31 passing through the clamping point, that is, controlling the thickness of the silicone oil 31 coating to change slightly; in normal use, when the lower pressing roller 11 and the rotating roller 12 clamp the plastic sheet 30 together, the surfaces of the lower pressing roller 11 and the rotating roller 12 abutting against the plastic sheet 30 are slightly elastically deformed, which not only ensures that the lower pressing roller 11 and the rotating roller 12 are not easy to slip with the surface of the plastic sheet 30 during the rotation process, but also ensures that the silicone oil 31 is coated on the surface of the plastic sheet 30 with as little amount as possible, ensuring the continuous coating work and saving the use of silicone oil 31 as much as possible. The lower end of the screw rod 6 is provided with a limit ring 7 to limit the stroke of the screw rod 6 and prevent it from being separated from the lower pressing plate 8. Both ends of the pressing frame 10 are located in the notch 32, providing a limit for the pressing frame 10, thereby providing a limit for the pressing roller 11, preventing the pressing roller 11 from excessively pressing the plastic sheet 30 and the rotating roller 12, and preventing the plastic sheet 30 from being blocked and affecting the continuous production.

[0025] The rotating roller 12 is provided with a connecting shaft 25 at one end, and a connection is reserved for transmission connection with an external power device; in this production line, the rotating roller 12 is driven, and the plastic sheet 30 is driven by the winding device at the end of the production line. In some production lines, since a storage buffer device is provided for winding and changing the reels of the plastic sheet 30, continuous production must be ensured when storing the plastic sheet 30. Therefore, in the production line, the driving device needs to be connected to the connecting shaft 25, and the terminal winding device is linked through the frequency converter to ensure the continuous processing of the plastic sheet 30. The middle part of the flow control component is threadedly connected with an adjusting rod 22, and the lower end of the adjusting rod 22 can be inserted into the lower oil port 2801; the adjusting rod 22 can be manually rotated to adjust its height, so that the positional relationship between the lower end of the adjusting rod 22 and the lower oil port 2801 changes slightly, thereby controlling the flow of the silicone oil 31 to change slightly, and then controlling the amount of silicone oil 31 applied to the surface of the plastic sheet 30. The lower oil port 2801 narrows downward, and the lower end of the adjusting rod 22 narrows correspondingly to the lower oil port 2801; the lower oil port 2801 and the lower end of the adjusting rod 22 are both truncated cones, and their cross-sections are both trapezoidal, which can provide a lower limit for the adjusting rod 22 and can also change the flow rate of the silicone oil 31 through the lower oil port 2801 according to the distance between the lower end of the adjusting rod 22 and the lower oil port 2801. The upper end of the adjusting rod 22 is provided with an anti-slip knob 23, which is convenient for the operator to make manual adjustments.

[0026] In the above embodiment, the flow control assembly includes a connecting plate 18, a column 19, a spring 20, a nut 21 and a support rod 16, wherein the column 19, the spring 20, the nut 21 and the support rod 16 are symmetrically arranged on the first mounting plate 2 and the second mounting plate 3, and the column 19 is symmetrically distributed on the upper ends of the first mounting plate 2 and the second mounting plate 3. Symmetrical through holes are provided on the connecting plate 18, and the through holes are slidably connected to the column 19. The nut 21 is threadedly connected to the upper end of the column 19, the spring 20 is elastically connected between the nut 21 and the connecting plate 18, and the adjusting rod 22 is threadedly connected to the middle of the connecting plate 18. A plurality of slide seats 17 are provided on the side of the first mounting plate 2 and the second mounting plate 3, and the support rods 16 are symmetrically distributed and slidably connected to the plurality of slide seats 17 on the side of the first mounting plate 2 and the second mounting plate 3. Eccentric wheels 15 are provided at both ends of the transition frame 13, and the support rods 16 are in contact with the eccentric wheels 15 up and down, and the connecting plates 18 are in contact with the support rods 16 up and down; the transition roller 14 and the flow control assembly are linked by the sliding connection between the eccentric wheel 15 and the support rods 16. When the transition roller 14 is lifted upward, the eccentric wheel 15 rotates a certain angle with the transition roller 14. Driven by the eccentric structure of the eccentric wheel 15, the eccentric wheel 15 rotates a certain angle. 5, the side where the upper end is located pushes up the support rod 16, and the support rod 16 pushes up the connecting plate 18 along the direction of the slide seat 17, and at the same time compresses the spring 20 located between the connecting plate 18 and the nut 21, so that the connecting plate 18 is kept at a certain height. At this time, the adjusting rod 22 is lifted upward, and the lower end of the adjusting rod 22 is further away from the lower oil port 2801, so that the lower oil port 2801 is opened or the flow rate of the silicone oil 31 through the lower oil port 2801 is larger, so as to adjust the amount of silicone oil 31; because the upper end of the transition roller 14 is higher than the lower end of the lower pressure roller 11 during production, when the plastic sheet 30 bypasses the upper end of the transition roller 14 and the lower end of the lower pressure roller 11 A triangular cross-section area is formed, and the silicone oil 31 is buffered and distributed through the triangular area after falling from the lower oil pipe 24; in actual application, if the processing speed of the production line is faster, the amount of silicone oil 31 required is greater, and the transition roller 14 needs to be lifted upward, so that the plastic sheet 30 bypassing the upper end of the transition roller 14 and the lower end of the lower pressure roller 11 is more inclined, and the area with a triangular cross-section is more compact, the silicone oil 31 is more concentrated, and a larger capacity area is formed according to the thickness of the lower pressure roller 11, providing more sufficient silicone oil 31 for the production line, ensuring the quality stability of the silicone oil 31 during high-speed coating. A reduction box 26 is provided on the side of the second mounting plate 3, and the reduction box 26 is transmission-connected to the eccentric wheel 15. The reduction box 26 can be connected to an external handle, and the hand-cranked handle can finely adjust the angle of the eccentric wheel 15, thereby adjusting the flow of silicone oil 31 at the lower oil port 2801.

[0027] Description of the working method of the present invention:

[0028] After the plastic sheet 30 is produced by the extruder, it is processed by cutting, stretching, and static electricity removal devices. When entering this device, it bypasses the upper end of the transition roller 14 in the driven state, and then enters between the lower pressure roller 11 and the rotating roller 12 in the driven state, and then enters the drying, testing, and winding devices; in this device, silicone oil 31 is added to the first storage tank 28 and flows between the lower end of the adjusting rod 22 and the lower oil port 2801. In the area formed by the plastic sheet 30 and the lower pressure roller 11, the silicone oil 31 gathers and spreads from the middle to both sides to the edge of the plastic sheet 30. Under the continuous feeding and consumption of the plastic sheet 30, the silicone oil 31 is kept from flowing out from the edge of the plastic sheet 30, thereby reducing the total amount of silicone oil 31 entering the second storage tank 29 and entering the circulation component 27.

[0029] Generally speaking, the production speed of the plastic sheet 30 production line is kept uniform. After adjusting the amount of silicone oil 31, the transition roller 14 and the flow control component do not need to be adjusted. For an intelligent manufacturing production line with automatic start and stop, if automatic adjustment is to be achieved, a controller, a frequency converter and a power device can be added, and the reduction box 26 can be used for linkage and automatic control to achieve the adaptation of the production speed and the amount of silicone oil 31, ensuring that the thickness of the silicone oil 31 coating on the surface of the plastic sheet 30 remains unchanged, thereby maintaining stable quality and effect of the finished product.

[0030] This device is located in front of the drying device in the production line. The silicone oil 31 is sent to the drying device after coating, so as to form an anti-fog coating on the surface of the plastic sheet 30. After being made into a plastic box cover, it is used for food packaging, and the state of the food can be clearly seen.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments may still be modified, or some or all of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A silicone oil coating device for plastic sheets, comprising a frame, a first mounting plate, a second mounting plate, a pressing mechanism, a pressing roller, a rotating roller, a transition roller, a first storage tank, a second storage tank, a circulation component and a flow control component, characterized in that: The first mounting plate and the second mounting plate are fixedly connected to the upper end of the frame, one on the left and the other on the right. The upper ends of the first mounting plate and the second mounting plate are connected through the top plate. The pressing mechanism is mounted on the top plate. The output end of the pressing mechanism faces downward and passes through the top plate. The lower pressing roller is rotatably connected to the output end of the pressing mechanism. The rotating roller is rotatably connected between the first mounting plate and the second mounting plate. The lower pressing roller can abut against the rotating roller downward. A transition frame is rotatably connected between the first mounting plate and the second mounting plate. The transition roller is rotatably connected in the transition frame. The transition roller can swing up and down in front of the lower pressing roller and the rotating roller. The first storage tank and the second storage tank are fixedly connected between the first mounting plate and the second mounting plate, one on top and one on the bottom. The first storage tank is located above the lower pressing roller, and the second storage tank is located below the rotating roller. The circulation component is fixedly connected to the lower end of the frame. The two ends of the circulation component are respectively connected to the first storage tank and the second storage tank. The flow control component is mounted on the upper ends of the first mounting plate and the second mounting plate. A lower oil port is provided in the first storage tank. The lower oil port faces between the lower pressing roller and the transition roller. The output end of the flow control component can be inserted into the lower oil port.

2. The silicone oil coating device for plastic sheets according to claim 1, characterized in that: An oil lowering pipe is arranged at the lower end of the oil lowering port.

3. The silicone oil coating device for plastic sheets according to claim 1, characterized in that: The pressing mechanism includes a pressing motor, a screw rod, a pressing plate, a guide column and a pressing frame. The pressing motor is installed on the top plate, the output end of the pressing motor faces downward and is connected to the screw rod, the screw rod is transmission-connected to the pressing plate, both ends of the pressing plate are respectively connected to the guide columns, the lower end of the guide column is connected to the pressing frame, the pressing roller is rotatably connected to the pressing frame, the first mounting plate and the second mounting plate are symmetrically provided with notches, the upper ends of the first mounting plate and the second mounting plate are both provided with guide holes connected to the notches, and the guide columns are respectively slidably connected to the guide holes.

4. The silicone oil coating device for plastic sheets according to claim 3, characterized in that: A limiting ring is arranged at the lower end of the screw rod.

5. The silicone oil coating device for plastic sheets according to claim 3, characterized in that: Both ends of the pressing frame are located in the notch.

6. The silicone oil coating device for plastic sheets according to claim 1, characterized in that: A connecting shaft is arranged at one end of the rotating roller.

7. The silicone oil coating device for plastic sheets according to claim 1, characterized in that: The middle part of the flow control component is threadedly connected with an adjusting rod, the lower end of the adjusting rod can be inserted into the lower oil port, and the upper end of the adjusting rod is provided with an anti-slip knob.

8. The silicone oil coating device for plastic sheets according to claim 7, characterized in that: The lower oil port narrows downward, and the lower end of the regulating rod narrows correspondingly to the lower oil port.

9. The silicone oil coating device for plastic sheets according to claim 7, characterized in that: The flow control assembly includes a connecting plate, a column, a spring, a nut and a support rod, wherein the column, the spring, the nut and the support rod are symmetrically arranged on the first mounting plate and the second mounting plate, the columns are symmetrically distributed on the upper ends of the first mounting plate and the second mounting plate, the connecting plate is provided with symmetrical through holes, the through holes are slidably connected to the columns, the nut is threadedly connected to the upper end of the column, the spring is elastically connected between the nut and the connecting plate, the adjusting rod is threadedly connected to the middle part of the connecting plate, a plurality of slide seats are provided on the side surfaces of the first mounting plate and the second mounting plate, the support rods are symmetrically distributed and slidably connected to the plurality of slide seats on the side surfaces of the first mounting plate and the second mounting plate, eccentric wheels are provided at both ends of the transition frame, the support rods are abutted against the eccentric wheels up and down, and the connecting plate is abutted against the support rods up and down.

10. The silicone oil coating device for plastic sheets according to claim 9, characterized in that: A reduction box is provided on the side of the second mounting plate, and the reduction box is transmission-connected with the eccentric wheel.

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