Film feeding device of EVA (Ethylene Vinyl Acetate) film cutting machine

Abstract

The invention relates to the technical field of solar photovoltaic equipment manufacturing, in particular to a film feeding device of an EVA film cutting machine. A film feeding device of an EVA film cutting machine comprises a support, a driving roller, a pressing roller, a first adjusting mechanism and a second adjusting mechanism. The driving roller is horizontally arranged on the support, and the driving roller is arranged to be capable of rotating around the axis of the driving roller under driving of the driving mechanism and used for conveying the EVA film. The pressing roller is horizontally arranged above the driving roller and can rotate around the axis of the driving roller. The first adjusting mechanisms are arranged at the two ends of the pressing roller and used for adjusting the height of the pressing roller from the two ends of the pressing roller. The second adjusting mechanism is arranged above the pressing roller and used for applying downward pressure to the middle of the pressing roller. Through the arrangement mode, the pressing roller is in close contact with the upper surface of the EVA film all the time. By means of the design, it is ensured that the EVA film is kept flat in the unfolding process, and the wrinkling or unevenness phenomenon caused by a gap between the pressing roller and the EVA film is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of solar photovoltaic equipment manufacturing, and in particular to a film feeding device of an EVA film cutting machine. Background Art

[0002] Solar photovoltaic modules are assembled from coated glass and EVA film. During the manufacturing process, the EVA film needs to be cut. EVA encapsulation film is the most important cell encapsulation material due to its advantages in adhesion, light transmittance and durability. During the production of photovoltaic modules, the cells are encapsulated between the glass and the back panel through two layers of EVA film to avoid the influence of the external environment on the electrical properties of the cells. It can also prevent the cells from cracking during the transportation and installation of photovoltaic modules. After the encapsulation film is produced, it is usually necessary to cut the encapsulation film into a certain size for packaging. Therefore, cutting equipment is required in the process of cutting the encapsulation film.

[0003] The EVA film cutting machine is an automated device used in photovoltaic module production lines, specifically for cutting and laying EVA (ethylene-vinyl acetate copolymer) films. The main function of the machine is to automatically cut the entire roll of EVA or backsheet material according to the size required by the customer and lay it accurately on the photovoltaic module.

[0004] However, since the EVA film has a certain width, in the prior art, when the EVA film is conveyed from the laying device, wrinkles will appear between the EVA and the bonded glass surface, which will increase the probability of the photovoltaic module being broken and cracked due to the arching of the EVA during the subsequent extrusion process.

[0005] The utility model patent with the authorization announcement number CN220700391U provides a photovoltaic module EVA cutting machine, which includes a machine body, and a brush is installed at the upper end of the discharge port on the machine body. The length of the brush is longer than the length of the glass on which the EVA needs to be laid. After the EVA is laid on the glass, it passes under the brush. The brush head sticks to the surface of the EVA to squeeze out the air between the EVA and the glass, thereby reducing the fragments and hidden cracks of the battery cells caused by the arching of the EVA. Since the brush of the above-disclosed technical solution is set at the discharge port on the machine body, the EVA film is already attached to the glass when the brush is flattened, so the problem of wrinkles in the EVA cannot be adjusted at the source when the EVA film is discharged. Based on this, the existing technology still needs to be improved. Summary of the invention

[0006] In view of this, the present invention proposes an EVA film cutting machine film feeding device, which can at least solve the technical problem that wrinkles are easily generated when the existing cutting machine feeds the film.

[0007] The film feeding device of an EVA film cutting machine of the present invention comprises: a bracket, a driving roller, a pressure roller, a first adjustment mechanism and a second adjustment mechanism. The bracket is fixedly arranged. The driving roller is horizontally arranged on the bracket, and the driving roller is configured to be rotatable around its axis under the drive of the driving mechanism, and is used to convey the EVA film. The pressure roller is horizontally arranged above the driving roller and is rotatable around its axis. The first adjustment mechanism is arranged at both ends of the pressure roller, and is used to adjust the height of the pressure roller from both ends of the pressure roller. The second adjustment mechanism is arranged above the pressure roller, and is used to apply downward pressure to the middle part of the pressure roller.

[0008] In some embodiments, first bearing seats are provided at both ends of the pinch roller. The first adjustment mechanism comprises a guide frame, a first driving cylinder and a mounting plate; the guide frame is fixedly mounted on the bracket; the first driving cylinder is mounted on the guide frame, the mounting plate is connected to the output end of the first driving cylinder and is slidably mounted on the guide frame in the vertical direction, the guide frame is used to limit the rotation of the mounting plate; the first bearing seat is mounted on the mounting plate.

[0009] In some embodiments, the guide frame includes an upper support plate and a lower support plate arranged opposite to each other up and down, and a guide shaft vertically installed between the upper support plate and the lower support plate; a linear bearing is installed on the mounting plate, and the linear bearing is slidably mounted on the guide shaft along the vertical direction.

[0010] In some embodiments, the second adjustment mechanism includes a support seat, a second driving cylinder and a clamping assembly; the support seat is fixedly mounted on the bracket; the second driving cylinder is mounted on the support seat; the clamping assembly includes a pressure rod and a pressure wheel; the pressure rod is mounted on the output shaft of the second driving cylinder, and the second driving cylinder is configured to drive the pressure rod to move vertically; two pressure wheels are provided, and the two pressure wheels are symmetrically arranged about the vertical plane where the axis of the pressure roller is located; each pressure wheel is rotatably mounted on the pressure rod around its own axis.

[0011] In some embodiments, the direction of the driving roller axis is taken as the first direction, and the horizontal direction perpendicular to the first direction is taken as the second direction. The support seat at least includes a support shaft with a square longitudinal section, and the support shaft is arranged along the second direction. The second adjustment mechanism also includes two support plates and a cylinder support arranged between the two support plates. The two support plates are respectively fixedly installed on both sides of the first direction of the support shaft, and the support plates have a portion higher than the support shaft; a pin hole extending along the first direction is provided on the portion of each support plate higher than the support shaft; the cylinder support is located above the support shaft, and the pin holes on both sides of the second direction of the cylinder support are rotatably inserted through the pin shaft so that the cylinder support has a horizontal state and an inclined state; the second driving cylinder is installed on the cylinder support, and the cylinder support is provided with a center hole for the pressure rod to pass through.

[0012] In some embodiments, a connecting plate is installed at the bottom of the pressure rod, and two groups of support plates are arranged below the connecting plate. Each group of support plates includes two support plates arranged opposite to each other in a first direction. A wheel axle is installed between the two support plates of each group, and the pressure wheel is rotatably mounted on the wheel axle.

[0013] In some embodiments, a plurality of second adjustment mechanisms are provided, and the plurality of second adjustment mechanisms are distributed at equal intervals along the first direction.

[0014] In some embodiments, the outer peripheral wall of the pressure roller is provided with a first threaded protrusion and a second threaded protrusion, the first threaded protrusion and the second threaded protrusion have opposite spiral directions and are symmetrically arranged about the middle part of the pressure roller, and the rotation direction of the first threaded protrusion and the second threaded protrusion is configured so that the EVA film can be spread to both side edges when the driving roller conveys the EVA film.

[0015] In some embodiments, the film feeding device of the EVA film cutting machine further includes static elimination bars arranged in parallel, and the static elimination bars are installed on the bracket and are located at the output side of the EVA film.

[0016] In some embodiments, both ends of the driving roller are mounted on the bracket through a second bearing seat; the driving mechanism includes a driving motor and a belt transmission assembly, the driving motor is used to drive the belt transmission assembly to rotate, and the belt transmission assembly is connected to one end of the driving roller to drive the driving roller to rotate.

[0017] The beneficial effects of the present invention are as follows: the present application sets a pressure roller and sets a first adjustment mechanism at both ends of the pressure roller to adjust the height of the pressure roller from both ends of the pressure roller, so that the pressure roller is always in close contact with the upper surface of the EVA film. This design ensures that the EVA film remains flat during the unfolding process, and avoids wrinkles or unevenness caused by gaps between the pressure roller and the EVA film. Considering that the pressure roller is relatively long, in order to prevent its bending deformation from causing the pressure in the middle part to be less than the pressure at both ends, the present invention sets a second adjustment mechanism. This mechanism can apply a certain pressure to the middle part of the pressure roller, so that the pressure applied by the entire pressure roller on the EVA film is more uniform. It helps to further improve the transportation and use effects of the EVA film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a film feeding device of an EVA film cutting machine provided by one embodiment of the present invention; Figure 2 A schematic structural diagram of a film feeding device of an EVA film cutting machine provided by an embodiment of the present invention from another perspective; Figure 3 A partial cross-sectional view of a second adjustment mechanism of a film feeding device of an EVA film cutting machine provided in one embodiment of the present invention.

[0020] Description of reference numerals: 1. Motor seat; 2. Driving motor; 3. Active pulley; 4. Transmission belt; 5. Driven pulley; 6. First driving cylinder; 7. Pressure roller; 8. Support seat; 9. Support plate; 10. Support plate; 11. Second driving cylinder; 12. Rod seat; 13. Driving roller; 14. Static elimination rod; 15. Linear bearing; 16. First bearing seat; 17. Pressure wheel; 18. Mounting plate; 19. Guide shaft; 20. Wheel axle; 21. Pressure rod; 22. Cylinder support; 23. Guide sleeve; 24. Upper support plate; 25. Lower support plate; 26. Second bearing seat. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the embodiments of the present invention are further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0022] It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are for distinguishing two non-identical entities with the same name or non-identical parameters. It can be seen that "first" and "second" are only for the convenience of expression and should not be understood as limitations on the embodiments of the present invention. The subsequent embodiments will not explain this one by one.

[0023] The present invention provides an EVA film cutting machine film feeding device, such as Figure 1 and Figure 2 As shown, it includes: a bracket, a driving roller 13, a pressing roller 7, a first adjustment mechanism and a second adjustment mechanism. The bracket is fixed (the fixed frame is not shown in the figure). The driving roller 13 is horizontally arranged on the bracket, and the driving roller 13 is configured to be rotatable around its axis under the drive of the driving mechanism. The driving roller 13 is wound with an EVA film, and when the driving roller 13 rotates, it is used to convey the EVA film so that the EVA film is unfolded. Figure 1The direction indicated by the middle arrow is the direction of the EVA film unfolding. The pressure roller 7 is horizontally arranged above the driving roller 13 and is rotatably arranged around its axis. The first adjustment mechanism is arranged at both ends of the pressure roller 7, and is used to apply downward pressure to the middle part of the pressure roller 7, so that the pressure roller 7 is always in contact with the upper surface of the EVA film, ensuring that the EVA film is flat when unfolded. As the number of EVA film layers on the driving roller 13 gradually decreases when it rotates, the gap between the pressure roller 7 and the EVA film will increase. The present application can adjust the height of the pressure roller 17 by setting the first adjustment mechanism, so that the pressure roller 7 is kept in close contact with the upper surface of the EVA film. The second adjustment mechanism is arranged above the pressure roller 7, and is used to adjust the height of the pressure roller 7 from the middle part of the pressure roller 7. Since the length of the pressure roller 7 is long, in order to prevent the pressure in the middle part from being less than the pressure at both ends due to the bending deformation of the pressure roller 7, the second adjustment mechanism is arranged to apply a certain pressure to the middle part of the pressure roller 7, so that the pressure applied by the entire pressure roller 7 to the EVA film is more uniform, thereby improving the transportation and use effect of the EVA film.

[0024] Compared with the prior art, the present invention provides a pressure roller 7, and provides a first adjustment mechanism at both ends of the pressure roller 7 to adjust the height of the pressure roller 7 from both ends of the pressure roller 7, so that the pressure roller 7 is always in close contact with the upper surface of the EVA film. This design ensures that the EVA film remains flat during the unfolding process, and avoids wrinkles or unevenness caused by a gap between the pressure roller 7 and the EVA film. Considering that the length of the pressure roller 7 is relatively long, in order to prevent its bending deformation from causing the pressure in the middle part to be less than the pressure at both ends, the present invention provides a second adjustment mechanism. This mechanism can apply a certain pressure to the middle part of the pressure roller 7, so that the pressure applied by the entire pressure roller 7 on the EVA film is more uniform. It helps to further improve the transportation and use effects of the EVA film.

[0025] In some embodiments, first bearing seats 16 are provided at both ends of the pressing roller 7, so that the pressing roller 7 can rotate on the first bearing seats 16. The first adjustment mechanism includes a guide frame, a first driving cylinder 6 and a mounting plate 18. The guide frame is fixedly mounted on the bracket. The first driving cylinder 6 is mounted on the guide frame, and the mounting plate 18 is connected to the output end of the first driving cylinder 6 and is slidably mounted on the guide frame in the vertical direction, and the guide frame is used to limit the rotation of the mounting plate 18. The first bearing seat 16 is mounted on the mounting plate 18. Specifically, pressure sensors (not shown in the figure) are provided at both ends and the lower side of the middle of the pressing roller 7. The pressure sensors are connected to the switches of the first driving cylinder 6 and the second driving cylinder 11 in communication. The pressure sensors are used to detect the reaction force of the EVA film on the pressing roller 7, and transmit the detected pressure to the switches of the first driving cylinder 6 and / or the second driving cylinder 11, so that the first driving cylinder 6 and the second driving cylinder 11 can be adjusted in real time, ensuring the accuracy and reliability of the operation.

[0026] In some embodiments, the guide frame includes an upper support plate 24 and a lower support plate 25 disposed opposite to each other, and a guide shaft 19 vertically mounted between the upper support plate 24 and the lower support plate 25. A linear bearing 15 is mounted on the mounting plate 18, and the linear bearing 15 is slidably sleeved on the guide shaft 19 along the vertical direction. Specifically, Figure 2 As shown, the first driving cylinder 6 is mounted on the upper supporting plate 24. Two guide shafts 19 are arranged between the upper supporting plate 24 and the lower supporting plate 25, and two linear bearings 15 are mounted on each guide shaft 19, and each mounting plate 18 is mounted on four linear bearings 15. When the first driving cylinder 6 is turned on, the mounting plate 18 is driven to descend, and the mounting plate 18 drives the four linear bearings 15 to move vertically downward, thereby adjusting the height of the pressing roller 7.

[0027] In some embodiments, the second adjustment mechanism includes a support seat 8, a second driving cylinder 11 and a clamping assembly. The support seat 8 is fixedly mounted on the bracket. The second driving cylinder 11 is mounted on the support seat 8. The clamping assembly includes a pressure rod 21 and a pressure wheel 17. The pressure rod 21 is mounted on the output shaft of the second driving cylinder 11, and the second driving cylinder 11 is configured to drive the pressure rod 21 to move vertically. There are two pressure wheels 17, and the two pressure wheels 17 are symmetrically arranged about the vertical plane where the axis of the pressure roller 7 is located. Each pressure wheel 17 is rotatably mounted on the pressure rod 21 around its own axis. When the second driving cylinder 11 is working, it can move downward through the pressure rod 21, and the two pressure wheels 17 below the pressure rod 21 are directly in contact with the pressure roller 7, which can achieve downward force while avoiding affecting the rotation of the pressure roller 7.

[0028] In some embodiments, Figure 2 and Figure 3As shown, the direction of the axis of the driving roller 13 is the first direction, and the horizontal direction perpendicular to the first direction is the second direction. The support seat 8 at least includes a support shaft with a square longitudinal section, and the support shaft is arranged along the second direction. The second adjustment mechanism also includes two support plates 10 and a cylinder support 22 arranged between the two support plates 10. The two support plates 10 are fixedly installed on both sides of the support shaft in the first direction, and the support plates 10 have a portion higher than the support shaft; each support plate 10 is provided with a pin hole extending along the first direction on the portion higher than the support shaft. The cylinder support 22 is located above the support shaft, and the pin holes on both sides of the second direction of the cylinder support 22 are rotatably inserted through the pin shaft, so that the cylinder support 22 has a horizontal state and an inclined state. The second driving cylinder 11 is installed on the cylinder support 22, and the cylinder support 22 is provided with a center hole for the pressure rod 21 to pass through. Specifically, when the distances between the two clamping wheels 17 and the clamping roller 7 are the same, the second driving cylinder 11 will work to drive the two clamping wheels 17 to contact the clamping roller 7 at the same time through the pressure rod 21. However, due to long-term use, deviations occur between the two clamping wheels 17 and the clamping roller 7. If the pressure rod 21 is still vertically downward, the clamping wheel 17 that first contacts the clamping roller 7 will be damaged due to excessive force. Based on this, the present application sets a cylinder support 22 that can rotate slightly to meet the assembly deviation requirements and reduce equipment wear. In addition, the support shaft is also provided with an insertion hole for passing up and down, and a guide sleeve 23 perpendicular to the cylinder support 22 is provided below it. The pressure rod 21 passes through the guide sleeve 23 and is clearance-matched with the guide sleeve 23, so that the position of the pressure rod 21 can be smoothly adjusted.

[0029] In some embodiments, a connecting plate is installed at the bottom of the pressure rod 21, and two groups of support plates 9 are arranged below the connecting plate. Each group of support plates 9 includes two support plates 9 arranged opposite to each other in the first direction. A wheel axle 20 is installed between the two support plates 9 of each group. The pressure wheel 17 is rotatably sleeved on the wheel axle 20 to provide rotation support for the pressure wheel 17. Figure 3 As shown, the two groups of support plates 9 are separated from top to bottom in an outward expansion shape, so that the two clamping wheels 17 are dispersedly arranged to avoid stress concentration on the clamping roller 7.

[0030] In some embodiments, a plurality of second adjustment mechanisms are provided, and the plurality of second adjustment mechanisms are evenly spaced along the first direction, so as to increase the force application position of the pressure roller 7 to improve the pressing effect of the pressure roller 7. Figure 1 and Figure 2 As shown, there are two second adjustment mechanisms.

[0031] In some embodiments, Figure 1 and Figure 2As shown, the outer peripheral wall of the pressure roller 7 is provided with a first threaded protrusion and a second threaded protrusion, the first threaded protrusion and the second threaded protrusion have opposite spiral directions and are symmetrically arranged about the middle part of the pressure roller 7, and the rotation direction of the first threaded protrusion and the second threaded protrusion is configured to enable the EVA film to be spread to both side edges when the driving roller 13 conveys the EVA film.

[0032] In some embodiments, the film feeding device of the EVA film cutting machine further includes a static elimination rod 14 arranged in parallel, which is mounted on the bracket through a rod holder 12 and is located at the output side of the EVA film. The pressing roller 7 rotates in a clockwise direction from left to right, and when the junction of the first thread protrusion and the second thread protrusion is above the pressing roller 7, the V-shaped tip faces the output direction of the EVA film.

[0033] In some embodiments, both ends of the driving roller 13 are mounted on the second bearing seat 26, and the second bearing seat 26 is mounted on the bracket. The driving mechanism includes a motor seat 1, a driving motor 2 and a belt transmission assembly. The motor seat 1 is used to install the driving motor 2, and the driving motor 2 is used to drive the belt transmission assembly to rotate. The belt transmission assembly is connected to one end of the driving roller 13 to drive the driving roller 13 to rotate. Specifically, Figure 1 As shown, the belt transmission assembly includes a driving pulley 3, a driven pulley 5 and a transmission belt 4 sleeved on the outside of the driving pulley 3 and the driven pulley 5. The driving pulley 3 is connected to the output end of the driving motor 2, and the driven pulley 5 is connected to one end of the driving roller 13, so that when the driving motor 2 rotates, it is transmitted to the driving roller 13 through the belt transmission assembly.

[0034] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0035] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An EVA film cutting machine film feeding device, characterized in that: include: A bracket, wherein the bracket is fixedly arranged; A driving roller (13), the driving roller (13) being horizontally arranged on the bracket, the driving roller (13) being configured to be rotatable around its axis under the drive of the driving mechanism, and being used for conveying the EVA film; A pressure roller (7), the pressure roller (7) being arranged horizontally above the driving roller (13) and being rotatable around its axis; A first adjustment mechanism, the first adjustment mechanism being arranged at both ends of the pressing roller (7) and being used for adjusting the height of the pressing roller (7) from both ends of the pressing roller (7); and A second adjustment mechanism, the second adjustment mechanism is arranged above the pressing roller (7) and is used to apply downward pressure to the middle part of the pressing roller (7).

2. The film feeding device of the EVA film cutting machine according to claim 1, characterized in that: A first bearing seat (16) is provided at both ends of the clamping roller (7); the first adjustment mechanism comprises a guide frame, a first driving cylinder (6) and a mounting plate (18); the guide frame is fixedly mounted on the bracket; the first driving cylinder (6) is mounted on the guide frame, the mounting plate (18) is connected to the output end of the first driving cylinder (6) and is slidably mounted on the guide frame in a vertical direction, and the guide frame is used to limit the rotation of the mounting plate (18); the first bearing seat (16) is mounted on the mounting plate (18).

3. The film feeding device of the EVA film cutting machine according to claim 2, characterized in that: The guide frame comprises an upper support plate (24) and a lower support plate (25) which are arranged opposite to each other in an upper and lower direction, and a guide shaft (19) which is vertically mounted between the upper support plate (24) and the lower support plate (25); a linear bearing (15) is mounted on the mounting plate (18), and the linear bearing (15) is slidably mounted on the guide shaft (19) in a vertical direction.

4. The film feeding device of the EVA film cutting machine according to claim 1, characterized in that: The second adjustment mechanism comprises a support seat (8), a second driving cylinder (11) and a clamping assembly; the support seat (8) is fixedly mounted on the bracket; the second driving cylinder (11) is mounted on the support seat (8); the clamping assembly comprises a pressure rod (21) and a pressure wheel (17); the pressure rod (21) is mounted on the output shaft of the second driving cylinder (11), and the second driving cylinder (11) is configured to drive the pressure rod (21) to move vertically; two pressure wheels (17) are provided, and the two pressure wheels (17) are symmetrically arranged with respect to the vertical plane where the axis of the pressure roller (7) is located; each of the pressure wheels (17) is rotatably mounted on the pressure rod (21) around its own axis.

5. The film feeding device of the EVA film cutting machine according to claim 4, characterized in that: The direction where the axis of the driving roller (13) is located is taken as the first direction, and the horizontal direction perpendicular to the first direction is taken as the second direction. The support seat (8) at least comprises a support shaft with a square longitudinal section, and the support shaft is arranged along the second direction. The second adjustment mechanism also comprises two support plates (10) and a cylinder support (22) arranged between the two support plates (10). The two support plates (10) are respectively fixedly mounted on both sides of the support shaft in the first direction, and the support plates (10) have a portion higher than the support shaft; a pin hole extending in the first direction is arranged on the portion of each support plate (10) higher than the support shaft; the cylinder support (22) is located above the support shaft, and the pin holes are rotatably inserted into the pin holes on both sides of the second direction of the cylinder support (22) through the pin shaft, so that the cylinder support (22) has a horizontal state and an inclined state; the second driving cylinder (11) is mounted on the cylinder support (22), and a center hole for the pressure rod (21) to pass through is arranged on the cylinder support (22).

6. The film feeding device of the EVA film cutting machine according to claim 4, characterized in that: A connecting plate is installed at the bottom of the pressure rod (21), and two groups of support plates (9) are arranged below the connecting plate. Each group of support plates (9) includes two support plates (9) arranged opposite to each other in a first direction. A wheel axle (20) is installed between the two support plates (9) of each group, and the pressure wheel (17) is rotatably sleeved on the wheel axle (20).

7. The film feeding device of the EVA film cutting machine according to claim 1, characterized in that: A plurality of the second adjustment mechanisms are provided, and the plurality of second adjustment mechanisms are distributed at equal intervals along the first direction.

8. The film feeding device of the EVA film cutting machine according to claim 1, characterized in that: The outer peripheral wall of the pressing roller (7) is provided with a first thread protrusion and a second thread protrusion, the first thread protrusion and the second thread protrusion have opposite spiral directions and are symmetrically arranged about the middle part of the pressing roller (7), and the rotation direction of the first thread protrusion and the second thread protrusion is configured so that the EVA film can be spread toward the edges on both sides when the driving roller (13) conveys the EVA film.

9. The film feeding device of the EVA film cutting machine according to claim 1, characterized in that: It also comprises static elimination bars (14) arranged in parallel, wherein the static elimination bars (14) are installed on the bracket and are located at the output side of the EVA film.

10. The film feeding device of the EVA film cutting machine according to claim 1, characterized in that: Both ends of the driving roller (13) are mounted on the bracket via a second bearing seat (26); the driving mechanism comprises a driving motor (2) and a belt transmission assembly, the driving motor (2) being used to drive the belt transmission assembly to rotate, and the belt transmission assembly being connected to one end of the driving roller (13) to drive the driving roller (13) to rotate.

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