Membrane material coating equipment

Abstract

The utility model discloses membrane material coating equipment which comprises a rack, an inlet traction adsorption roller, a first propelling roller, a second propelling roller and an outlet traction adsorption roller, wherein the inlet traction adsorption roller and the outlet traction adsorption roller are both arranged on the rack; the second propelling roller and the first propelling roller are arranged at intervals in the first direction, and the rotating axes of the first propelling roller and the second propelling roller are parallel to each other; the first propelling roller and the second propelling roller are connected through a flexible structural part, and the rotating speed of the first propelling roller is the same as that of the second propelling roller; the first propelling roller and the second propelling roller are configured to move along a second direction; the film material is conveyed to the drying oven after passing through the in-traction adsorption roller, the second propelling roller, the first propelling roller and the out-traction adsorption roller in sequence in the conveying direction. Therefore, the first propelling roller and the second propelling roller of the membrane material coating equipment are connected through the flexible structural part, so that the rotating speeds of the two propelling rollers can be consistent, and inclined grains caused by inconsistent roller speeds during membrane material coating can be avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a film material coating equipment. BACKGROUND

[0002] The existing isolation film ceramic coating machine, the base film is affected by the rotation of the propelling roller in the coating process, resulting in oblique lines on the film surface after drying, affecting the quality of the isolation film product. Therefore, how to eliminate the oblique lines on the film surface is a technical problem that the technical personnel in the field urgently need to solve. SUMMARY

[0003] Therefore, the utility model discloses a film material coating equipment, which can solve the problem of oblique lines on the film surface during coating.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A film material coating equipment, comprising:

[0006] A rack;

[0007] An entry traction adsorption roller is arranged on the rack;

[0008] A first propelling roller;

[0009] A second propelling roller is arranged along a first direction and has a rotation axis parallel to that of the first propelling roller; the first propelling roller and the second propelling roller are connected by a flexible structure, have the same rotation speed, and are configured to move along a second direction;

[0010] An exit traction adsorption roller is arranged on the rack;

[0011] The film material is transmitted to an oven after passing through the entry traction adsorption roller, the second propelling roller, the first propelling roller, and the exit traction adsorption roller in sequence.

[0012] Optionally, in the above-mentioned film material coating equipment, the first propelling roller and the second propelling roller are connected to the rack by a moving device, and the first propelling roller comprises:

[0013] A roller body;

[0014] A central rod is arranged in the roller body, and the two ends of the central rod protrude from the roller body; the roller body and the central rod are connected by a first bearing, and the roller body can rotate around the central rod;

[0015] The end of the central rod is rotationally connected to the moving device by a second bearing.

[0016] The second advancing roller is identical in structure to the first advancing roller, and the roller body of the first advancing roller is connected to the roller body of the second advancing roller through the flexible structure.

[0017] Optionally, in the film coating device, the outer circumferential surface of each of the two roller bodies is recessed along the radial direction thereof to form a first recess and a second recess, respectively, the first recess is located at the end of the first advancing roller away from the moving device, and the second recess is located at the end of the second advancing roller away from the moving device; and the flexible structure is located in the first recess and the second recess.

[0018] Optionally, in the film coating device, the moving device comprises:

[0019] a first driving assembly fixed to the rack;

[0020] a guide assembly fixed to the rack;

[0021] a moving plate, which is in sliding connection with the guide assembly and is connected with the first driving assembly, and the first driving assembly drives the moving plate to move along the guide direction of the guide assembly, and the guide direction is the second direction.

[0022] Optionally, in the film coating device, the projection of the in-pulling suction roller in the vertical direction does not overlap with the projection of the out-pulling suction roller.

[0023] Optionally, in the film coating device, a tension roller is further arranged on the rack, and the tension roller is arranged between the in-pulling suction roller and the second advancing roller along the film transmission direction; the rotation axes of the tension roller, the in-pulling suction roller, the out-pulling suction roller, the first advancing roller and the second advancing roller are parallel to each other.

[0024] The roller surface of the out-pulling suction roller is provided with a plurality of suction holes, and the out-pulling suction roller is connected with a vacuum pump.

[0025] Optionally, in the film coating device, two deviation rectifying devices are further arranged symmetrically along the direction of the rotation axis of the out-pulling suction roller, and the two deviation rectifying devices are configured to reciprocally move along the rotation axis to cover the suction holes of the out-pulling suction roller that do not contact the film.

[0026] Optionally, in the film coating device, the deviation rectifying device comprises:

[0027] a sliding rail arranged on the rack, and the guide direction of the sliding rail is parallel to the rotation axis;

[0028] A slider is slidably connected with the slide rail;

[0029] A lead screw is passed through the slider;

[0030] A second driving assembly is fixedly connected with the end of the lead screw and drives the lead screw to rotate,

[0031] A shielding ring is fixed on the slider and is sleeved outside the outgoing traction adsorption roller;

[0032] The two shielding rings reciprocally move to shield the adsorption holes of the outgoing traction adsorption roller which are not contacted with the film material.

[0033] Optionally, in the film coating device, the deviation rectifying device further comprises a clamping portion, and the clamping portion is provided with an opening for the film material to pass through.

[0034] Optionally, in the film coating device, the flexible structure is a belt.

[0035] From the above technical solution, it can be seen that the first and second advancing rollers are connected through the flexible structure, which can ensure that the rotating speeds of the two advancing rollers are consistent and can avoid diagonal lines during film coating. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0037] Figure 1 The structure diagram of the film coating device provided by the embodiment of the present application Figure 1 ;

[0038] Figure 2 The structure diagram of the film coating device provided by the embodiment of the present application Figure 2 ;

[0039] Figure 3 The structure diagram of the film coating device provided by the embodiment of the present application Figure 3 ;

[0040] Figure 4 The structure diagram of the film coating device provided by the embodiment of the present application

[0041] Figure 5 The cross-sectional view of the film coating device provided by the embodiment of the present application

[0042] Figure 6 Part structure diagram of the deviation rectifying device provided by the utility model embodiment.

[0043] Wherein:

[0044] 1, into traction adsorption roller; 2, first propelling roller;

[0045] 21, roller body; 22, center rod; 23, first bearing; 24, second bearing;

[0046] 3, second propelling roller; 4, out traction adsorption roller; 5, film material; 6, flexible structural member;

[0047] 71, first drive assembly; 72, guide assembly; 73, moving plate; 8, tension roller;

[0048] 91, sliding rail; 92, sliding block; 93, screw rod; 94, second drive assembly; 95, shielding ring; 96, clamping portion;

[0049] 101, coating roller; 102, passing roller. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0051] In the description of the utility model, it should be pointed out that the directions or position relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "inner", "outer" are based on the directions or position relationships shown in the drawings or the directions or position relationships of the utility model product when it is usually placed, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a particular orientation, structure and operation, so it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0052] As Figures 1 to 6 shown, the utility model embodiment provides a film material coating equipment, can solve the problem that film surface produces oblique lines in the coating process of film material 5.

[0053] Firstly, the film material coating equipment comprises a rack, an entry traction suction roller 1, a first advancing roller 2, a second advancing roller 3 and an exit traction suction roller 4; the entry traction suction roller 1 and the exit traction suction roller 4 are arranged on the rack; the second advancing roller 3 is arranged in the first direction and is spaced apart from the first advancing roller 2, and the rotation axes of the first advancing roller 2 and the second advancing roller 3 are parallel to each other; the first advancing roller 2 and the second advancing roller 3 are connected through a flexible structure 6, and the rotating speeds of the first advancing roller 2 and the second advancing roller 3 are the same; the first advancing roller 2 and the second advancing roller 3 are configured to be movable in the second direction; and the transmission direction of the film material 5 is to be conveyed to an oven after passing through the entry traction suction roller 1, the second advancing roller 3, the first advancing roller 2 and the exit traction suction roller 4 in sequence.

[0054] It can be seen that the first advancing roller 2 and the second advancing roller 3 of the film material coating equipment are connected through the flexible structure 6, the rotating speeds of the two advancing rollers can be ensured to be consistent, and diagonal lines can be avoided during the coating of the film material 5 due to the inconsistent rotating speeds of the rollers.

[0055] In specific implementation, the first advancing roller 2 and the second advancing roller 3 are connected with the rack through a moving device, the first advancing roller 2 comprises a roller body 21 and a center rod 22, the center rod 22 is arranged in the roller body 21, the two ends of the center rod 22 protrude from the roller body 21, the roller body 21 and the center rod 22 are connected through a first bearing 23, and the roller body 21 can rotate around the center rod 22; the end of the center rod 22 is rotationally connected with the moving device through a second bearing 24; the second advancing roller 3 has the same structure as the first advancing roller 2 (that is, the roller body 21 and the center rod 22 of the second advancing roller are also connected through the first bearing 23), the roller body 21 of each of the first advancing roller 2 and the second advancing roller 3 can rotate, and the roller body 21 of the first advancing roller 2 and the roller body 21 of the second advancing roller 3 are connected through the flexible structure 6. It should be noted that the first bearing 23 includes but is not limited to a deep groove ball bearing, the second bearing 24 includes but is not limited to a self-aligning bearing, the contact position of the center rod 22 and the roller body 21 is connected through the deep groove ball bearing, the two ends of the center rod 22 are connected with the self-aligning bearing, the self-aligning bearing is slidably connected with the rack through the moving device, and the self-aligning bearing can ensure that the two advancing rollers will not be stuck due to the unevenness of the two ends of the roller body when the advancing rollers move in the guide direction, and the self-aligning bearing can also rotate when the deep groove ball bearing is blocked to ensure the smooth rotation of the advancing roller. At the same time, the tension break caused by the rotation blockage of the deep groove ball bearing can be avoided.

[0056] In specific implementation, the outer circumferential surface of the two roller bodies 21 is concave along the radial direction thereof to form a first groove and a second groove, respectively, the first groove is located at the end of the first advancing roller 2 far away from the moving device, and the second groove is located at the end of the second advancing roller 3 far away from the moving device; the flexible structure 6 is located in the first groove and the second groove. In the radial direction of the first advancing roller 2, the size of the flexible structure 6 at the contact position with the first advancing roller 2 is smaller than the depth of the first groove; in the radial direction of the second advancing roller 3, the size of the flexible structure 6 at the contact position with the second advancing roller 3 is smaller than the depth of the second groove. That is, the surface of the flexible structure 6 does not protrude from the surface of the roller body 21 of the first advancing roller 2 or the surface of the roller body 21 of the second advancing roller 3, thereby avoiding affecting the coating of the film material 5. It should be noted that the third direction is the length direction of the first advancing roller 2.

[0057] In specific implementation, the moving device comprises a first driving assembly 71, a guide assembly 72 and a moving plate 73, wherein the first driving assembly 71 is fixed to the rack; the guide assembly 72 is fixed to the rack; the moving plate 73 is in sliding connection with the guide assembly 72 and is connected with the first driving assembly 71, the first driving assembly 71 drives the moving plate 73 to move along the guide direction of the guide assembly 72, and the guide direction is the second direction. It should be noted that the guide assembly 72 is a pushing slide rail installed on the side plate of the rack, and the pushing slide rail is in a double slide rail mode, the pushing slide rail is connected with the moving plate 73, the side plate of the rack is connected with a fixed plate intersecting with the side plate, the fixed plate is fixed with the first driving assembly 71, one end of the first driving assembly 71 is connected with the moving plate 73, and the moving plate 73 and the first driving assembly 71 are symmetrically arranged on the two side plates of the rack, the plunger bearing of the first advancing roller 2 and the plunger bearing of the second advancing roller 3 are connected with the moving plate 73, the first driving assembly 71 drives the moving plate 73 to drive the first advancing roller 2 and the second advancing roller 3 to move along the second direction to the direction close to or far away from the coating roller 101, thereby better ensuring the consistency of the movement of the first advancing roller 2 and the second advancing roller 3. Exemplarily, the second direction is a direction perpendicular to the vertical direction, but is not limited thereto, as long as the two advancing rollers can be moved to be close to the coating roller 101 and no interference occurs between the various roller bodies in the equipment. Moreover, the first driving assembly 71 includes but is not limited to a pushing air cylinder.

[0058] In specific implementation, in the vertical direction, the projection of the entry traction suction roller 1 does not overlap with the projection of the exit traction suction roller 4. That is, the entry traction suction roller 1 and the exit traction suction roller 4 are not in the same vertical direction, so as to provide installation space for the tension display roller. Compared with the prior art, the entry traction suction roller 1 is placed below the exit traction suction roller 4, and the two are too far apart from each other, so that the tension roller 8 (usually used in combination with a swing roller to regulate tension) cannot be added, and the film material 5 passes through the guide roller with a small roller gap, and the small gap is prone to cause the film material 5 to wrinkle. The present solution can provide installation space for the tension display roller, and can also avoid the film material 5 from being wrinkled due to the small distance between the over-rollers 102.

[0059] In specific implementation, the tension roller 8 is further arranged on the rack; along the transmission direction of the film material 5, the tension roller 8 is arranged between the entry traction suction roller 1 and the second advancing roller 3; the rotation axes of the tension roller 8, the entry traction suction roller 1, the exit traction suction roller 4, the first advancing roller 2 and the second advancing roller 3 are parallel to each other, so as to better control the transmission direction of the film material 5; the roller surface of the exit traction suction roller 4 is provided with a plurality of suction holes, the exit traction suction roller 4 is connected with a vacuum pump, the exit traction suction roller 4 can be subjected to negative pressure by the vacuum pump, the film material 5 passes through the rotating exit traction suction roller 4, the film material 5 is sucked, the exit traction suction roller 4 transmits the film material 5 backward, and at the same time, the tension of the film material 5 between the entry traction suction roller 1 and the exit traction suction roller 4 is cut off. The negative pressure value of the exit traction suction roller 4 is adjusted according to the tension value of the tension roller 8. That is, the tension roller 8 and the exit traction suction roller 4 are linked, when the display value of the tension roller 8 becomes smaller or fluctuates, the negative pressure frequency of the exit traction suction roller 4 increases; when the display value of the tension roller 8 becomes larger, the negative pressure frequency of the exit traction suction roller 4 decreases, so as to ensure that the film material 5 is not stretched too much, the film material 5 does not shake before and after the entry traction suction roller 1, the wind frequency of the entry traction suction roller 1 is increased within a normal range, and the tension of the film material 5 does not change. At the same time, the tension roller 8 can be linked with the rotating speed of the exit traction suction roller 4, the rotating speed of the exit traction suction roller 4 is faster, the display value of the tension roller 8 is larger, the rotating speed of the exit traction suction roller 4 is slower, and the display value of the tension roller 8 is smaller.

[0060] In specific implementation, the two deviation rectifying devices are symmetrically arranged along the rotating axis direction of the exit traction suction roller 4, and are configured to reciprocally move along the rotating axis to cover the suction holes of the exit traction suction roller 4 which do not contact the film material 5. Due to the limited negative pressure capacity of the exit traction suction roller 4, for the film material 5 with a relatively narrow coating width, the positions of the suction roller which do not contact the film material 5 need to be timely shielded to ensure the negative pressure effect.

[0061] In specific implementation, the deviation rectifying device comprises a sliding rail 91, a sliding block 92, a screw rod 93, a second driving assembly 94 and a shielding ring 95. The sliding rail 91 is arranged on the rack, and the guiding direction of the sliding rail 91 is parallel to the rotation axis. The sliding block 92 is in sliding connection with the sliding rail 91. The screw rod 93 penetrates through the sliding block 92. The second driving assembly 94 is fixedly connected with the end of the screw rod 93 and drives the screw rod 93 to rotate. The shielding ring 95 is fixed on the sliding block 92 and is sleeved outside the out-drawing suction roller 4. The two shielding rings 95 reciprocate to shield the suction holes of the out-drawing suction roller 4 which do not contact the film 5, so as to ensure the stability of the film 5 with small width on the out-drawing suction roller 4. It should be noted that, along the length direction of the out-drawing suction roller 4, the two deviation rectifying devices arranged at the two ends of the out-drawing suction roller 4 are symmetrically arranged. The two deviation rectifying devices can have their own sliding rail 91, sliding block 92, screw rod 93, second driving assembly 94 and shielding ring 95. For details, see Figure 3 Alternatively, the two deviation rectifying devices have their own sliding block 92 and shielding ring 95, but the sliding rail 91, screw rod 93 and second driving assembly 94 are common structural parts of the two deviation rectifying devices. In this structure, the film 5 passes through the out-drawing suction roller 4. The two shielding rings 95 on the out-drawing suction roller 4 are fixed on the respective sliding blocks 92. The sliding blocks 92 move on the sliding rails 91. The two sliding blocks 92 are connected by the screw rod 93. The other end of the screw rod 93 is fixedly connected with the second driving assembly 94. One end of the sliding block 92 is fixedly connected with the shielding ring 95. The second driving assembly 94 drives the screw rod 93 to rotate. The shielding ring 95 can move to both sides or the middle. The second driving assembly 94 includes but is not limited to a driving motor.

[0062] In specific implementation, the deviation rectifying device further comprises a clamping portion 96. For details, see Figure 6 The clamping portion 96 is provided with an opening for the film 5 to pass through. The opening direction is towards the inner side of the rack, preventing the film 5 from deviating from the relative position with the out-drawing suction roller 4 during movement, thereby causing the occurrence of diagonal lines in the coating process.

[0063] In specific implementation, the flexible structural member 6 is a belt. For example, the material of the belt is polyurethane. The polyurethane belt can be spliced at will, facilitating installation. The surface protrusions of the polyurethane belt cannot exceed the surface of the roller body 21 of the first pushing roller 2 and the surface of the roller body 21 of the second pushing roller 3, avoiding affecting the coating. It should be noted that the flexible structural member 6 is not limited to a polyurethane belt. The specific structural type and material type of the flexible structural member 6 can be designed according to actual needs by those skilled in the art.

[0064] In actual implementation, the film material 5 enters the oven area after passing through the deviation rectifying device. Since the film material 5 is thin, generally 5 μm, and is made of PE / PP film, the film material 5 will vibrate under the influence of the heating air of the oven, and the vibration will be transmitted to the coating area. The first driving assembly 71 drives the first and second advancing rollers 2 and 3 to move in the second direction, so as to drive the film material 5 to approach the coating roller 101. At this time, it is the coating mode. The first driving assembly 71 drives the first and second advancing rollers 2 and 3 to move in the second direction away from the coating roller 101. At this time, it is the emptying mode. The vibration of the film material 5 is transmitted to the out-tensioning suction roller 4. Since the out-tensioning suction roller 4 has poor tension blocking effect, the tension between the in-tensioning suction roller 1 and the out-tensioning suction roller 4 will change or fluctuate, resulting in diagonal lines of the coating roller 101. The tension roller 8 is linked with the out-tensioning suction roller 4. When the value displayed by the tension roller 8 becomes smaller or fluctuates, the frequency of the negative pressure air of the out-tensioning suction roller 4 increases. At the same time, the deviation rectifying device is matched to ensure that the shielding ring 95 shields the area of the out-tensioning suction roller 4 without contacting the film material 5, so as to ensure that the negative pressure can stably adsorb the film material 5. When the value displayed by the tension roller 8 becomes larger, the frequency of the negative pressure air of the out-tensioning suction roller 4 decreases, so as to ensure that the film material 5 is not stretched seriously, and the film material 5 before and after the in-tensioning suction roller 1 does not vibrate, so that the in-tensioning suction roller 1 increases the air frequency in the normal range without causing the change of the tension of the film material 5. At the same time, the tension roller 8 can be linked with the rotating speed of the out-tensioning suction roller 4. When the rotating speed of the out-tensioning suction roller 4 is fast, the value displayed by the tension roller 8 is larger. When the rotating speed of the out-tensioning suction roller 4 is slow, the value displayed by the tension roller 8 is smaller.

[0065] Finally, it should be noted that the relational terms herein, such as first and second, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0066] The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the various embodiments can be mutually referred to.

[0067] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A film material coating apparatus characterized by comprising: The application relates to a film material conveying device, which comprises a rack, an entry traction suction roller (1) arranged on the rack, a first advancing roller (2), a second advancing roller (3) arranged in a first direction and parallel to the first advancing roller (2), a flexible structure (6) connecting the first advancing roller (2) and the second advancing roller (3), the first advancing roller (2) and the second advancing roller (3) being arranged to move in a second direction, an exit traction suction roller (4) arranged on the rack, and a film material (5) conveyed through the entry traction suction roller (1), the second advancing roller (3), the first advancing roller (2) and the exit traction suction roller (4) in sequence and then into an oven. The first advancing roller (2) and the second advancing roller (3) are connected to the rack through a moving device, the first advancing roller (2) comprises a roller body (21), a central rod (22) penetrating through the roller body (21) and protruding from the roller body (21) at both ends, the roller body (21) and the central rod (22) being connected through a first bearing (23) and the roller body (21) being rotatable around the central rod (22), the end of the central rod (22) being rotatably connected to the moving device through a second bearing (24), the second advancing roller (3) being identical in structure to the first advancing roller (2), and the roller body (21) of the first advancing roller (2) being connected to the roller body (21) of the second advancing roller (3) through the flexible structure (6). The outer circumferential surface of each roller body (21) is recessed in the radial direction to form a first recess and a second recess, the first recess being located at the end of the first advancing roller (2) away from the moving device, the second recess being located at the end of the second advancing roller (3) away from the moving device, and the flexible structure (6) being located in the first recess and the second recess. The moving device comprises a first driving assembly (71) fixed to the rack, a guide assembly (72) fixed to the rack, and a moving plate (73) slidably connected to the guide assembly (72) and connected to the first driving assembly (71), the first driving assembly (71) driving the moving plate (73) to move along the guide direction of the guide assembly (72), and the guide direction being the second direction. In the vertical direction, the projection of the entry traction suction roller (1) does not overlap with the projection of the exit traction suction roller (4). The device further comprises a tension roller (8) arranged on the rack, the tension roller (8) being arranged between the entry traction suction roller (1) and the second advancing roller (3) along the conveying direction of the film material (5), and the rotation axes of the tension roller (8), the entry traction suction roller (1), the exit traction suction roller (4), the first advancing roller (2) and the second advancing roller (3) being parallel to each other. ​ 2. The film material coating apparatus according to claim 1, characterized by ​ ​ ​ ​ ​ 3. The film material coating apparatus according to claim 2, characterized by ​ 4. The film material coating apparatus according to claim 2, wherein ​ ​ ​ ​ 5. The film material coating apparatus according to claim 1, wherein ​ 6. The film coating apparatus according to claim 1, wherein ​ The roller surface of the out-drawing adsorption roller (4) is provided with a plurality of adsorption holes, and the out-drawing adsorption roller (4) is connected with a vacuum pump.

7. The film material coating apparatus according to claim 6, wherein Two deviation rectifying devices are symmetrically arranged along the direction of the rotation axis of the out-drawing adsorption roller (4), and the two deviation rectifying devices are configured to reciprocally move along the rotation axis to cover the adsorption holes of the out-drawing adsorption roller (4) which do not contact the film material (5).

8. The film material coating apparatus according to claim 7, wherein The deviation rectifying device comprises: a sliding rail (91) arranged on the rack, and the guiding direction of the sliding rail (91) is parallel to the rotation axis; a sliding block (92) slidably connected with the sliding rail (91); a lead screw (93) penetrating through the sliding block (92); a second driving assembly (94) fixedly connected with the end of the lead screw (93) and driving the lead screw (93) to rotate, a shielding ring (95) fixed on the sliding block (92) and sleeved outside the out-drawing adsorption roller (4); the two shielding rings (95) reciprocally move to cover the adsorption holes of the out-drawing adsorption roller (4) which do not contact the film material (5).

9. The film material coating apparatus according to claim 7, wherein The deviation rectifying device further comprises a clamping portion (96) provided with an opening for the film material (5) to pass through.

10. The film material coating apparatus according to claim 1, wherein The flexible structural member (6) is a belt.

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