EVA (Ethylene Vinyl Acetate) adhesive film forming device

Abstract

The utility model relates to an EVA (Ethylene Vinyl Acetate) adhesive film forming device. Comprising a mounting rack, a cooling roller and a forming steel roller are rotationally connected to the mounting rack, and a rotation driving assembly is further included; a water absorption assembly with an adjustable vertical position is arranged below the cooling roller, and an air blowing assembly with an adjustable transverse position is arranged on the outer side of the cooling roller; the water absorbing assembly comprises a water collecting tank, a rotating shaft pipe with multiple groups of vent holes formed in the peripheral wall is rotationally connected to the water collecting tank, the peripheral wall of the rotating shaft pipe is sleeved with a sponge sleeve, and a water squeezing structure which is installed on the water collecting tank and can squeeze the sponge sleeve is further included; the device further comprises a shaft tube driving structure. The air blowing assembly comprises an air blowing shell connected with the cold air drying machine, the arc-shaped side plate is matched with the cooling roller, and a plurality of sets of air holes are formed in the arc-shaped side plate; the air blower further comprises an air uniformizing device arranged in the air blowing shell. According to the utility model, no water is generated on the surface of the cooling roller, no pollution is generated, the product quality is ensured, and the working efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of EVA film production equipment, in particular to an EVA film forming device. Background Art

[0002] EVA film is a high-viscosity thin film material sheet made of polymer resin (ethylene-vinyl acetate copolymer) as the main raw material, added with special additives, and processed by special equipment. It is also known as modified "EVA laminated glass film" in the industry. It has strong adhesion to inorganic glass and has the characteristics of toughness, transparency, heat resistance, cold resistance, high bonding strength, high elongation at break, and good moisture resistance. It is the most common packaging material in the manufacture of solar photovoltaic modules.

[0003] The preparation process for EVA film involves mixing EVA particles with various additives, then forming a film through melt extrusion and casting, which is then cooled and shaped to obtain the desired EVA film. Cast film is a process in which the EVA melt is extruded through a rubber roller and a patterned steel roller to form a film. The film must have a uniform pattern, so during the molding process, the molten EVA extruded through the die is adhered to the patterned steel roller after molding, then peeled off and cooled and reeled. However, during the extrusion process, some of the film often sticks to the rubber roller, resulting in an uneven pattern and a large amount of waste. To address this issue, the current control method is to use chilled water on the rubber roller, generally set at a temperature of 0°C-10°C (a few manufacturers even set it below 0°C). The patterned steel roller is kept at a higher temperature than the rubber roller, generally set at 15°C-35°C, allowing the EVA film to adhere to the warmer patterned steel roller.

[0004] However, because the rubber roller is set at a low temperature, condensation forms on the surface not in contact with the EVA, producing water droplets. During the production process, the water droplets flowing toward the area in contact with the EVA can cause the pattern of the EVA film to deform. Furthermore, water contamination of the EVA can also affect its performance. To address these issues, absorbent sponges or rags are often added to both sides of the rubber roller that does not contact the EVA, and operators need to regularly replace the sponges or rags. However, during production, it was discovered that this operation had certain drawbacks: frequent shutdowns were required to replace the sponges or rags, reducing production efficiency. Furthermore, the inability to replace the sponges or rags in a timely manner affected the production quality of the EVA film. Utility Model Content

[0005] The utility model aims to solve the technical problems existing in the known technology and provides an EVA film forming device with reasonable structural design, high working efficiency and high production quality.

[0006] The technical solution adopted by the present invention to solve the technical problems existing in the known technology is as follows: an EVA film forming device includes a mounting frame, on which a cooling roller equipped with a first rotary joint and a forming steel roller equipped with a second rotary joint are rotatably connected, and also includes a rotating drive component for driving the cooling roller and the forming roller to rotate; a water absorption component with adjustable vertical position is provided below the cooling roller, and a blowing component with adjustable horizontal position is provided on the outside of the cooling roller; the water absorption component includes a water collecting trough, on which a rotating shaft tube with multiple groups of ventilation holes provided on the outer peripheral wall is rotatably connected, a sponge sleeve is sleeved on the outer peripheral wall of the rotating shaft tube, and also includes a water squeezing structure installed on the water collecting trough that can squeeze the sponge sleeve; also includes a shaft tube driving structure for driving the rotating shaft tube to rotate; the blowing component includes a blowing shell connected to the cold air dryer, the arc-shaped side plate is adapted to the cooling roller and has multiple groups of ventilation holes provided on the arc-shaped side plate; also includes an air equalizer provided in the blowing shell.

[0007] The advantages and positive effects of the present invention are as follows: the present invention provides an EVA film forming device, which can absorb water droplets condensed on the surface of the cooling roller by arranging a water absorption component, wherein the sponge sleeve in the water absorption component contacts the cooling roller to absorb water, and the water squeezing structure and the water collecting tank work together to squeeze out the water absorbed by the sponge sleeve and collect it in the water collecting tank, and then discharge it; since there are multiple groups of ventilation holes on the outer peripheral wall of the rotating shaft tube, high-pressure gas can be introduced into the rotating shaft tube to dry the sponge sleeve from the inside out, thereby avoiding frequent replacement of the water absorption roller composed of the rotating shaft tube and the sponge sleeve, extending the water absorption cycle, and eliminating the need for frequent shutdowns to replace the sponge sleeve, thereby improving work efficiency; by arranging a blowing component, air can be blown to the area on the cooling roller that is not in contact with the molten EVA to prevent condensation on the surface of the area and subsequent generation of water droplets; the water absorption component and the blowing component work together to not only ensure that no moisture is generated on the surface of the cooling roller, but also that no pollution is generated, thereby ensuring product quality.

[0008] Preferably, the water squeezing structure includes an extrusion roller frame connected to the water collecting tank via an adjusting bolt, and an extrusion pressure roller is installed on the extrusion roller frame.

[0009] Preferably: the blowing assembly also includes a shell cover that is snapped on the open end of the blowing shell and can be locked therewith, and an air inlet is provided on the shell cover; it also includes an inspection door corresponding to the air equalizer opened on the side wall of the blowing shell.

[0010] Preferably: two groups of first slide grooves are arranged opposite to each other on the mounting frame, and a first slide that can move longitudinally is slidably connected in each first slide groove. The two ends of the rotating shaft tube are rotatably connected to the two groups of first slides through rolling bearings respectively, and also include a lifting and adjusting cylinder for driving the first slide to move longitudinally.

[0011] Preferably: a position-adjustable cooling roller frame is connected to the mounting frame, the cooling roller is rotatably connected to the cooling roller frame through a rolling bearing, a second slide groove is provided on the cooling roller frame, a second slide that can move laterally is slidably connected in the second slide groove, and the blowing shell is fixed to the second slide through a connecting rod fixed on its side; and a transverse adjustment cylinder is also included for driving the second slide to move laterally.

[0012] Preferably, a transition roller frame is fixedly connected to the mounting frame, a roller swing assembly is installed on the transition roller frame, and a transition roller matched with the forming roller is installed on the roller swing assembly.

[0013] Preferably: the roller swing assembly includes a rotating shaft rotatably connected to the transition roller frame and arranged parallel to the forming roller, two sets of swing arms arranged opposite to each other are fixedly connected to the rotating shaft, and the transition roller is connected to the upper ends of the two sets of swing arms; it also includes a swing cylinder rotatably connected to the mounting frame through a hinge pin, and the protruding end of the swing cylinder is hinged to the swing arm through a pin.

[0014] Preferably: the air equalizer includes an air equalizing installation frame with open ends, and multiple groups of air equalizing bending plates are installed in the air equalizing installation frame. The air equalizing bending plates are arranged longitudinally and perpendicular to the air flow direction. The open direction of the air equalizing bending plates is back to the air flow direction, and the bent parts of two adjacent air equalizing bending plates constitute an air flow channel for gas to pass through; the air equalizing bending plates are distributed in multiple rows in the air equalizing installation frame and the air equalizing bending plates in the front and rear adjacent rows are staggered.

[0015] Preferably, it further comprises a base, on which a plurality of groups of support screws are installed, and the mounting frame is connected to the base via the plurality of groups of support screws. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the blowing assembly in the present utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the water absorbing component in the present invention;

[0019] Figure 4 It is a schematic cross-sectional structural diagram of the air equalizer in the utility model.

[0020] Figure: 1, base; 2, support screw; 3, mounting frame; 4, transition roller frame; 5, lifting adjustment cylinder; 6, first slide; 7, water absorption assembly; 7-1, sponge sleeve; 7-2, extrusion roller frame; 7-3, extrusion pressure roller; 7-4, water collecting tank; 7-5, adjusting bolt; 7-6, rotating shaft tube; 7-7, vent hole; 8, first slide groove; 9, second slide groove; 10, second slide; 11, cooling roller frame; 12, transverse adjustment cylinder Cylinder; 13. Blowing assembly; 13-1. Shell cover; 13-2. Air inlet; 13-3. Blowing shell; 13-4. Arc-shaped side panel; 13-5. Air equalizer; 13-5-1. Air equalizer mounting frame; 13-5-2. Air equalizer bending plate; 13-6. Inspection door; 14. Cooling roller; 15. First rotary joint; 16. Forming steel roller; 17. Second rotary joint; 18. Transition roller; 19. Roller swing assembly; 20. Rotation drive assembly. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given to explain in detail:

[0022] See Figure 1 The EVA film forming device of the present invention includes a mounting frame 3 and a base 1. Multiple sets of support screws 2 are mounted on the base 1. The mounting frame 3 is connected to the base 1 via the multiple sets of support screws 2. By providing multiple sets of support screws 2, the longitudinal position of the mounting frame 3 can be adjusted according to actual working needs.

[0023] A cooling roller 14 equipped with a first rotary joint 15 and a forming steel roller 16 equipped with a second rotary joint 17 are rotatably connected to the mounting frame 3, and also includes a rotation drive assembly 20 for driving the cooling roller 14 and the forming steel roller 16 to rotate.

[0024] Furthermore, this embodiment also includes a cooling roller frame 11 connected to the mounting frame 3, the horizontal position of which can be adjusted. That is, a linear guide pair is provided between the cooling roller frame 11 and the mounting frame 3 to movably connect the two. A cylinder (not shown) is installed on the mounting frame 3 to drive the cooling roller frame 11 to move along the linear guide. In addition, the cooling roller 14 is rotationally connected to the cooling roller frame 11 via a rolling bearing. The rotation drive assembly 20 includes a first drive motor and a second drive motor connected to the mounting frame 3. A pulley pair is installed between the output shaft of the first drive motor and the rotating shaft of the cooling roller 14, and a pulley pair is installed between the second drive motor and the rotating shaft of the forming steel roller 16.

[0025] like Figure 1As shown, a transition roller frame 4 is fixedly attached to the mounting frame 3. A roller swing assembly 19 is mounted on the transition roller frame 4. A transition roller 18, which mates with the forming steel roller 16, is mounted on the roller swing assembly 19. The roller swing assembly 19 comprises a rotating shaft rotatably connected to the transition roller frame 4 and arranged parallel to the forming steel roller 16. Two sets of opposing swing arms are fixedly attached to the rotating shaft, with the transition roller 18 connected to the upper ends of the two swing arms. The assembly also includes a swing cylinder rotatably connected to the mounting frame 3 via a hinge pin. The extended end of the swing cylinder is hingedly connected to the swing arm via a pin. After the film is drawn from the forming steel roller 16, it passes through the transition roller 18 and is then directed to the other cooling rollers after the forming device. The transition roller 18 is located to the upper left of the forming steel roller 16 as shown in Figure 1. The film passes around the forming steel roller 16 before being wound onto the transition roller 18. The angle of the swing arm is adjustable, allowing for adjustment of the peeling angle between the forming steel roller 16 and the transition roller 18. Properly setting the separation position between the transition roller 18 and the forming steel roller 16 facilitates film drawing and adjusts the film wrap angle on the forming steel roller 16. Increasing the wrap angle increases the contact time between the film and the forming steel roller 16 at the same speed, increasing the film's cooling time. Consequently, faster film discharge speeds can be achieved while maintaining the same cooling requirements.

[0026] During the actual working process, the extrusion die of the EVA film molding machine is located directly above the tangent of the cooling roller 14 and the molding steel roller 16. The colloid is in film form and flows from the extrusion die to the tangent position of the molding steel roller 16 and the cooling roller 14. Through the rolling action of the molding steel roller 16 and the cooling roller 14, the film adheres to the molding steel roller 16. As the molding steel roller 16 rotates, the transition roller 18 peels off and transports the film to complete continuous production.

[0027] See further Figure 1 A vertically adjustable water absorption assembly 7 is provided below the cooling roller 14, and a horizontally adjustable air blowing assembly 13 is provided outside the cooling roller 14. The water absorption assembly 7 can first absorb the water droplets condensed on the surface of the cooling roller 14, and the air blowing assembly 13 can blow air toward the back of the cooling roller 14 to prevent condensation and the formation of water droplets on the surface of the cooling roller 14. This ensures that the surface of the cooling roller 14 is free of moisture and pollution, thereby ensuring product quality.

[0028] See further Figure 3 The water absorbing assembly 7 includes a water collecting tank 7-4, a rotating shaft tube 7-6 with a plurality of air holes 7-7 on its outer peripheral wall is rotatably connected to the water collecting tank 7-4, and a sponge sleeve 7-1 is sleeved on the outer peripheral wall of the rotating shaft tube 7-6. The water absorbing assembly 7 also includes a water squeezing structure installed on the water collecting tank 7-4 that can squeeze the sponge sleeve 7-1. Figure 3As shown, the water squeezing structure includes an extrusion roller frame 7-2 connected to the water collecting tank 7-4 via an adjusting bolt 7-5, and an extrusion pressure roller 7-3 is installed on the extrusion roller frame 7-2. The adjustment bolt 7-5 can be manually turned to adjust the fitting gap between the extrusion pressure roller 7-3 and the sponge sleeve 7-1. Through the squeezing of the sponge sleeve 7-1 by the extrusion pressure roller 7-3, the water absorbed by the sponge sleeve 7-1 after saturation can be squeezed out and stored in the water collecting tank 7-4. The water is then discharged uniformly through the drainage hose installed on the water collecting tank 7-4, thereby greatly improving the water absorption time of the sponge sleeve 7-1. In order to further improve the water squeezing effect on the sponge sleeve 7-1, in this embodiment, two groups of water squeezing structures are provided, and the two groups of water squeezing structures are respectively arranged on both sides of the sponge sleeve 7-1.

[0029] In order to further dry the sponge sleeve 7-1 that has completed the water squeezing operation, a gas rotary joint is installed at the open end of the rotating shaft tube 7-6. The gas rotary joint is connected to the high-pressure air pump through the gas pipe. The high-pressure gas blows the sponge sleeve 7-1 dry from the inside to the outside, thereby avoiding frequent replacement of the water-absorbing roller composed of the rotating shaft tube 7-6 and the sponge sleeve 7-1 and extending the water absorption cycle.

[0030] The water absorption component 7 also includes a shaft tube driving structure (not shown) for driving the rotating shaft tube 7-6 to rotate. The shaft tube driving structure includes a driven pulley keyed on the rotating shaft tube 7-6, and also includes a driving motor installed on the mounting frame 3, a driving pulley keyed on the output shaft of the driving motor, and a belt is connected for transmission between the driving pulley and the driven pulley; it also includes a tensioning pulley seat installed on the side wall of the water collecting tank 7-4, a strip hole is opened on the tensioning pulley seat, the tensioning pulley is connected to the side wall of the water collecting tank 7-4 by a bolt passing through the above-mentioned strip inner hole, and a tensioning pulley connected to the belt transmission is rotatably connected to the tensioning pulley seat.

[0031] To facilitate replacement of the sponge sleeve 7-1 and routine maintenance of the water absorption assembly 7, two sets of first slide slots 8 are provided on the mounting frame 3. A longitudinally movable first slide 6 is slidably connected within each first slide slot 8. The ends of the rotating shaft tube 7-6 are rotatably connected to the two sets of first slides 6 via rolling bearings. The rotating shaft tube 7-6 also includes a lifting and adjusting cylinder 5 for driving the longitudinal movement of the first slide 6. The cylinder barrel of the lifting and adjusting cylinder 5 is connected to the mounting frame 3.

[0032] Further participation Figure 2The blowing assembly 13 includes a blowing shell 13-3 connected to the cold air dryer, and a plurality of ventilation holes are provided on the arc-shaped side panel 13-4. In addition, the arc-shaped side panel 13-4 is adapted to the cooling roller 14, that is, the concave curvature of the arc-shaped side panel 13-4 is consistent with the surface curvature of the cooling roller 14, so that the wind blown out of the ventilation hole just covers the surface of the cooling roller 14. On the one hand, waste can be avoided; on the other hand, the wind direction is concentrated, which can better reduce the surface temperature and humidity of the cooling roller 14, thereby reducing the dew point temperature of the cooling roller 14.

[0033] like Figure 2 As shown, the blowing assembly 13 also includes an air equalizer 13-5 provided in the blowing housing 13-3; Figure 4 The air equalizer 13-5 includes an air equalizing installation frame 13-5-1 with open ends, and multiple groups of air equalizing bending plates 13-5-2 are installed in the air equalizing installation frame 13-5-1. The air equalizing bending plates 13-5-2 are arranged longitudinally and perpendicular to the airflow direction. The open direction of the air equalizing bending plates 13-5-2 is back to the airflow direction, and the bent parts of two adjacent air equalizing bending plates 13-5-2 constitute an airflow channel for gas to pass through; the air equalizing bending plates 13-5-2 are distributed in multiple rows in the air equalizing installation frame 13-5-1, and the air equalizing bending plates 13-5-2 in adjacent rows are staggered.

[0034] Blowing assembly 13 also includes a housing cover 13-1 that snaps onto the open end of blowing housing 13-3 and can be locked therewith. Housing cover 13-1 is provided with an air inlet 13-2. Air inlet 13-2 is connected to a cold air dryer via a gas pipeline, blowing dry, cool air onto the surface of cooling roller 14. This not only rapidly reduces the surface temperature of cooling roller 14, allowing cooling roller 14 to operate at a lower temperature without condensation on the surface, but also ensures that molten EVA does not adhere to cooling roller 14 during production, thereby increasing EVA production speed and eliminating the impact of condensation on cooling roller 14 on product quality. Blowing assembly 13 also includes an access door 13-6 on the side wall of blowing housing 13-3, corresponding to air equalizer 13-5.

[0035] The blowing component 13 can blow air to the area of the cooling roller 14 that is not in contact with the molten EVA to prevent condensation on the surface of the area and the formation of water droplets. This design not only ensures that no moisture is generated on the surface of the cooling roller 14, but also does not cause any pollution, thereby ensuring product quality.

[0036] A 2-10 cm gap is maintained between the air blowing assembly 13 and the cooling roller 14 to ensure optimal air blowing. When not in use, the cooling roller 14 retracts and disengages from the forming steel roller 16 to protect it from damage. When retracting, the cooling roller 14 is driven by a corresponding cylinder (not shown), sliding along a specified track.

[0037] In actual use, such as Figure 1 As shown, in order to facilitate the adjustment of the distance between the blowing assembly 13 and the cooling roller 14, a second slide groove 9 is opened on the cooling roller frame 11, and a second slide 10 that can move laterally is slidably connected in the second slide groove 9. The blowing shell 13-3 is fixed to the second slide 10 through a connecting rod fixed on its side; it also includes a transverse adjustment cylinder 12 for driving the second slide 10 to move laterally.

[0038] Working process:

[0039] The extrusion die of the EVA film forming machine is located directly above the tangent line between the cooling roller 14 and the forming steel roller 16. The colloid flows from the extrusion die to the tangent line between the forming steel roller 16 and the cooling roller 14 in a film-like state. The film adheres to the forming steel roller 16 through the rolling action of the forming steel roller 16 and the cooling roller 14. As the forming steel roller 16 rotates, the transition roller 18 peels off the film and transports it, completing the continuous production of the film.

[0040] During the production process of the film, the sponge sleeve 7-1 in the water absorption component 7 contacts the cooling roller 14, and then absorbs the water droplets condensed on the surface of the cooling roller 14. At the same time, the blowing component 13 blows air to the back of the cooling roller 14 to prevent condensation on the surface of the area and the generation of water droplets, thereby ensuring that no moisture is generated on the surface of the cooling roller 14 and no pollution is generated, thereby ensuring product quality; when the sponge sleeve 7-1 absorbs water, the extrusion roller 7-3 performs a backlog operation on the sponge sleeve 7-1, so that the water adsorbed by the sponge sleeve 7-1 is squeezed out and collected in the water collecting tank 7-4, and then discharged uniformly through the drainage hose installed on the water collecting tank 7-4, thereby greatly improving the water absorption time of the sponge sleeve 7-1; at the same time, high-pressure gas can be introduced into the rotating shaft tube 7-6 from the gas rotary joint, and the high-pressure gas blows the sponge sleeve 7-1 dry from the inside to the outside, thereby avoiding frequent replacement of the water absorption roller composed of the rotating shaft tube 7-6 and the sponge sleeve 7-1, and extending the water absorption cycle.

Claims

1. An EVA film forming device, characterized by: The invention comprises a mounting frame (3), a cooling roller (14) equipped with a first rotary joint (15) and a forming steel roller (16) equipped with a second rotary joint (17) being rotatably connected to the mounting frame (3), and a rotation drive assembly (20) for driving the cooling roller (14) and the forming steel roller (16) to rotate; a water absorbing assembly (7) with an adjustable vertical position is provided below the cooling roller (14), and a blowing assembly (13) with an adjustable horizontal position is provided outside the cooling roller (14); The water absorption component (7) includes a water collecting trough (7-4), a rotating shaft tube (7-6) with a plurality of vent holes (7-7) formed on its outer peripheral wall being rotatably connected to the water collecting trough (7-4), a sponge sleeve (7-1) being sleeved on the outer peripheral wall of the rotating shaft tube (7-6), and a water squeezing structure mounted on the water collecting trough (7-4) capable of squeezing the sponge sleeve (7-1); and a shaft tube driving structure for driving the rotating shaft tube (7-6) to rotate. The blowing assembly (13) includes a blowing shell (13-3) connected to the cold air dryer, an arc-shaped side plate (13-4) adapted to the cooling roller (14) and provided with multiple groups of ventilation holes on the arc-shaped side plate (13-4); and also includes an air equalizer (13-5) arranged in the blowing shell (13-3).

2. The EVA film forming device according to claim 1, wherein: The water squeezing structure comprises an extrusion roller frame (7-2) connected to a water collecting tank (7-4) via an adjusting bolt (7-5), and an extrusion pressing roller (7-3) is installed on the extrusion roller frame (7-2).

3. The EVA film forming device according to claim 1, wherein: The blowing assembly (13) further includes a housing cover (13-1) that is buckled and lockably connected to the open end of the blowing housing (13-3), and an air inlet (13-2) is provided on the housing cover (13-1); and also includes an inspection door (13-6) opened on the side wall of the blowing housing (13-3) and corresponding to the air equalizer (13-5).

4. The EVA film forming device as claimed in claim 1, wherein: Two groups of first slide grooves (8) arranged opposite to each other are provided on the mounting frame (3). A first slide (6) capable of longitudinal movement is slidably connected in each of the first slide grooves (8). Both ends of the rotating shaft tube (7-6) are rotatably connected to the two groups of first slides (6) via rolling bearings. The rotating shaft tube (7-6) also includes a lifting and lowering adjustment cylinder (5) for driving the first slide (6) to move longitudinally.

5. The EVA film forming device as claimed in claim 1, wherein: A cooling roller frame (11) with adjustable position is connected to the mounting frame (3); a cooling roller (14) is rotatably connected to the cooling roller frame (11) via a rolling bearing; a second slide groove (9) is provided on the cooling roller frame (11); a second slide (10) capable of laterally moving is slidably connected in the second slide groove (9); a blowing shell (13-3) is fixedly connected to the second slide (10) via a connecting rod fixed on its side surface; and a transverse adjustment cylinder (12) is also included for driving the second slide (10) to move laterally.

6. The EVA film forming device as claimed in claim 1, wherein: A transition roller frame (4) is fixedly connected to the mounting frame (3), a roller swing assembly (19) is installed on the transition roller frame (4), and a transition roller (18) matched with a forming steel roller (16) is installed on the roller swing assembly (19).

7. The EVA film forming device according to claim 6, wherein: The roller swing assembly (19) includes a rotating shaft rotatably connected to the transition roller frame (4) and arranged parallel to the forming steel roller (16), two sets of swing arms arranged opposite to each other are fixedly connected to the rotating shaft, and the transition roller (18) is connected to the upper ends of the two sets of swing arms; and also includes a swing cylinder rotatably connected to the mounting frame (3) through a hinge pin, and the protruding end of the swing cylinder is hinged to the swing arm through the pin.

8. EVA film forming device as claimed in claim 1, is characterized in that: The air distributor (13-5) comprises an air distribution installation frame (13-5-1) with open ends. A plurality of air distribution bending plates (13-5-2) are installed in the air distribution installation frame (13-5-1). The air distribution bending plates (13-5-2) are arranged longitudinally and perpendicular to the airflow direction. The open direction of the air distribution bending plates (13-5-2) faces away from the airflow direction. The bent portions of two adjacent air distribution bending plates (13-5-2) form an airflow channel for gas to pass through. The air distribution bending plates (13-5-2) are distributed in multiple rows in the air distribution installation frame (13-5-1), and the air distribution bending plates (13-5-2) in adjacent rows are staggered.

9. The EVA film forming device according to claim 1, wherein: It also includes a base (1), on which multiple groups of support screws (2) are installed, and the mounting frame (3) is connected to the base (1) through the multiple groups of support screws (2).

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