Device for smoothing bubbles between EVA (Ethylene Vinyl Acetate) adhesive film and glass

Abstract

The utility model relates to a device for smoothing bubbles between an EVA (Ethylene Vinyl Acetate) adhesive film and glass. Comprising a supporting table structure with the transverse position adjustable, and a storage workbench structure is installed on the supporting table structure and used for adsorbing a glass plate through negative pressure; the two clamping assemblies can move transversely and are used for clamping the EVA adhesive film and laying the EVA adhesive film on the glass plate; the material pressing assembly is used for pressing the end part of the EVA adhesive film on the end part of the glass plate; the upper transverse moving seat can move transversely and longitudinally, a material scraping assembly and a rolling assembly are installed on the upper transverse moving seat, and the material scraping assembly comprises a material scraping plate and further comprises a material scraping air cylinder used for driving the material scraping plate to ascend and descend; the rolling assembly comprises a material pressing roller and further comprises an elastic buffering unit used for elastically pressing the material pressing roller on the EVA adhesive film. According to the utility model, the adhesive film can be automatically laid on the glass substrate, bubbles between the adhesive film and the glass substrate can be automatically eliminated, the smoothing effect is good, the working efficiency is high, and the packaging efficiency of the photovoltaic module is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to EVA adhesive film production equipment technical field, especially relate to a bubble smoothing device between EVA adhesive film and glass. BACKGROUND

[0002] EVA adhesive film is by high molecular resin (ethylene-vinyl acetate copolymer) as main raw material, add special agent, process and make a kind of high viscosity film material sheet by special equipment, it is also called modified "EVA sandwich glass adhesive film" in industry, it has very strong bonding force to inorganic glass, has tenacious, transparent, temperature-resistant, cold-resistant, bonding strength is big, elongation at break is high, good resistance to humidity and other characteristics, is the most common packaging material in solar photovoltaic module manufacturing.

[0003] The middle layer of solar photovoltaic module is that single battery is welded together by metal conductive band, the upper and lower sides of battery are EVA adhesive film, the uppermost layer is low-carbon toughened white glass, and the back is PVF composite film. After stacking each layer in order, it is placed into vacuum press for heat pressing packaging. The uppermost layer of low-carbon toughened white glass has high light transmittance, and will not discolor after long-term ultraviolet irradiation. EVA film adds ultraviolet resistant agent and curing agent, and forms a certain elastic curing layer during heat pressing process, and ensures the close contact between battery and glass.

[0004] In actual operation process, mainly artificial grabbing adhesive film drags and covers on glass, since the area of adhesive film is large, multiple workers need to cooperate to drag and cover large adhesive film on glass, which increases labor cost; in addition, since the area of adhesive film is large, bubbles are often generated when covering it on glass, the bubbles between EVA adhesive film and glass can cause wrinkles during heat pressing packaging, and then the adhesive film and glass are poorly bonded, which directly affects the light transmittance, output power and service life of solar packaging assembly, in order to avoid the influence of bubbles on the quality of solar photovoltaic module, the bubbles between EVA adhesive film and glass need to be smoothed; the existing bubble smoothing method mainly uses scraper to smooth bubbles, since the scraper is uneven, the middle part of glass can be deformed, the effect of artificial smoothing method is poor, the smoothing quality is difficult to guarantee, and the packaging efficiency is low. UTILITY MODEL CONTENTS

[0005] The utility model provides a bubble smoothing device between EVA adhesive film and glass with reasonable structure design, high work efficiency and high degree of automation.

[0006] The utility model discloses a technical scheme adopted to solve the technical problems existing in the prior art is: a kind of bubble smoothing device between EVA adhesive film and glass includes the support platform structure of adjustable transverse position, support platform structure is installed with the article workbench structure, to negative pressure adsorption glass plate;Still include the two groups of clamping components that can move laterally, to hold EVA adhesive film and EVA adhesive film is laid on glass plate;Still include pressing assembly, to press the end of EVA adhesive film on the end of glass plate;Still include the upper transverse seat that can move laterally and longitudinally, scraping assembly and roll pressing assembly are installed on the upper transverse seat, scraping assembly includes scraping plate, still include the scraping cylinder for driving scraping plate to lift;Roll pressing assembly includes pressing roller, still include elastic buffer unit, to press the elastic pressing roller on EVA adhesive film.

[0007] The utility model discloses a bubble smoothing device between EVA adhesive film and glass, through setting article workbench structure, can be adsorbed stably to glass substrate, avoid glass substrate to move or fall in the operation process;Through setting the two groups of clamping components that can move laterally, can hold EVA adhesive film, and EVA adhesive film is laid on glass substrate automatically, need not multiple staff cooperation to lay adhesive film, improve work efficiency and reduce the labor intensity of staff;Through setting pressing assembly cooperation workbench structure, can press the end of adhesive film, avoid adhesive film to shift under the action of external force;Through setting the scraping assembly and roll pressing assembly that can move laterally and longitudinally, can be smoothed automatically to the EVA adhesive film that glass substrate is laid, and then eliminate the bubble between EVA adhesive film and glass substrate, and the smoothing effect is good and work efficiency is high, further improve the packaging efficiency of solar photovoltaic module.

[0008] Preferably: still include the first transverse guide rail that is fixedly connected on the side of lifting mounting support, and the lower transverse seat is slidably connected on the first transverse guide rail through sliding block, and the two groups of clamping components and pressing assembly are all installed on the lower transverse seat;Still include lower transverse chain wheel pair and lower transverse drive assembly for driving lower transverse seat to move along first transverse guide rail.

[0009] Preferably: still include lifting mounting seat that is set in the upper of clamping component, and the second transverse guide rail is fixedly connected on the lifting mounting seat, and the upper transverse seat is slidably connected with second transverse guide rail through sliding block, and still include upper transverse chain wheel pair and upper transverse drive assembly for driving upper transverse seat to move along second transverse guide rail;Still include lifting drive assembly for driving lifting mounting seat to move longitudinally.

[0010] Preferably, the extending end of the scraping cylinder is downwardly arranged and connected with the upper transverse moving seat; the scraping assembly further comprises a lifting mounting member mounted at the extending end of the scraping cylinder, a scraping mounting seat is mounted on the lifting mounting member, and an adjustable mounting plate is pivotally mounted on the scraping mounting seat; an arc-shaped guide groove is formed on the scraping mounting seat, and a screw connected with the adjustable mounting plate is arranged in the arc-shaped guide groove; a scraping plate is mounted on the adjustable mounting plate; and a tension spring is further mounted between the adjustable mounting plate and the scraping mounting seat.

[0011] Preferably, the elastic buffering unit comprises a roller mounting seat for mounting the pressing roller, at least two vertically arranged pressing guide rods are mounted on the roller mounting seat, each pressing guide rod is slidably connected with the upper transverse moving seat through a linear bearing, and a pressing spring sleeved on the pressing guide rod is arranged between the upper transverse moving seat and the roller mounting seat.

[0012] Preferably, the clamping assembly comprises a finger cylinder mounted on the lower transverse moving seat, two film clamping blocks for clamping the EVA film are mounted on the finger cylinder, and anti-skid ribs are arranged on opposite surfaces of the two film clamping blocks.

[0013] Preferably, the pressing assembly comprises a pressing plate cylinder fixedly connected with the lower transverse moving seat and arranged in a direction facing outward, and a pressing plate member is mounted at the extending end of the pressing plate cylinder and located between the two clamping assemblies.

[0014] Preferably, the article workbench structure comprises a workbench body mounted on the support table structure, a negative pressure adsorption area and a rolling support area are arranged on the workbench body, a plurality of negative pressure adsorption holes are arranged in an array on the negative pressure adsorption area, and a plurality of bullseye universal wheels are arranged in an array on the rolling support area.

[0015] Preferably, the lifting driving assembly comprises two vertically arranged lifting guide rods, a lifting seat is slidably connected with the lifting guide rods through linear bearings, and the lifting mounting seat is connected with the lifting seat; and a lifting power unit for driving the lifting seat to move longitudinally along the lifting guide rods is further arranged.

[0016] Preferably, the upper transverse moving sprocket pair comprises a transverse moving driving sprocket and a transverse moving driven sprocket arranged in parallel, a transverse moving transmission chain is transmissionally connected between the transverse moving driving sprocket and the transverse moving driven sprocket, and a chain guide for supporting and guiding the transverse moving transmission chain is further arranged; the structure of the lower transverse moving sprocket pair is consistent with that of the upper transverse moving sprocket pair. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the utility model;

[0018] Figure 2 is a front view structural schematic diagram of the scraping assembly and the roller pressing assembly in the utility model;

[0019] Figure 3 Fig. 1 is a schematic diagram of the vertical structure of the pressing assembly and the clamping assembly in the utility model;

[0020] Figure 4 Fig. 2 is a schematic diagram of the vertical structure of the storage workbench structure in the utility model;

[0021] Figure 5 Fig. 3 is a schematic diagram of the vertical structure of the limiting adjustment assembly and the support table structure in the utility model;

[0022] Figure 6 Fig. 4 is a schematic diagram of the vertical structure of the upper horizontal moving sprocket pair and the upper horizontal moving driving assembly in the utility model;

[0023] Figure 7 Fig. 5 is a schematic diagram of the vertical structure of the lifting driving assembly in the utility model.

[0024] In the figure: 1, support; 2, lifting driving assembly; 2-1, lifting motor; 2-2, lifting driving sprocket; 2-3, lifting driven sprocket; 2-4, lifting lead screw; 2-5, lifting guide rod; 2-6, lifting seat; 3, support table top; 4, limiting adjustment assembly; 4-1, adjustment mounting seat; 4-2, first limiting piece; 4-3, second limiting piece; 4-4, fine adjustment clamping groove block; 5, support table structure; 5-1, support table body; 5-2, fine adjustment clamping piece; 6, storage workbench structure; 6-1, workbench body; 6-2, negative pressure adsorption area; 6-3, negative pressure adsorption hole; 6-4, rolling support area; 6-5, bull's eye universal wheel; 7, first horizontal moving guide rail; 8, pressing assembly; 8-1, pressing plate cylinder; 8-2, pressing plate piece; 9, clamping assembly; 9-1, finger cylinder; 9-2, adhesive film clamping block; 9-3, anti-skid convex rib; 10, lower horizontal moving seat; 11, lower horizontal moving sprocket pair; 12, lower horizontal moving driving assembly; 13, upper horizontal moving sprocket pair; 13-1, horizontal moving driven sprocket; 13-2, horizontal moving transmission chain; 13-3, chain guide piece; 13-4, horizontal moving driving sprocket; 14, second horizontal moving guide rail; 15, upper horizontal moving seat; 16, scraping assembly; 16-1, lifting mounting piece; 16-2, scraping mounting seat; 16-3, scraping plate fixed plate; 16-4, scraping plate; 16-5, scraping plate backing plate; 16-6, adjustable mounting plate; 16-7, arc-shaped guide groove; 16-8, scraping guide rod; 16-9, scraping cylinder; 17, roller pressing assembly; 17-1, pressing roller; 17-2, roller mounting seat; 17-3, pressing spring; 17-4, pressing guide rod; 17-5, guide rod limiting piece; 18, lifting mounting support; 19, upper horizontal moving driving assembly; 19-1, horizontal moving driving motor; 19-2, driving transmission pair; 20, lifting mounting seat; 21, EVA adhesive film. DETAILED DESCRIPTION

[0025] To further understand the invention content, features, and effects of this utility model, the following embodiments are provided in detail:

[0026] Please see Figure 1 The bubble-smoothing device between EVA film and glass of this utility model includes a bracket 1 with multiple casters and feet mounted on the bottom, a bracket platform 3 mounted on the top surface of the bracket 1, and a horizontally adjustable support structure 5 mounted on the bracket platform 3. See further details. Figure 5 The support platform structure 5 includes a support platform body 5-1 for supporting the glass plate. A fine adjustment latching member 5-2 is fixedly connected to the bottom surface of the support platform body 5-1 and engages with the fine adjustment latching block 4-4. The fine adjustment latching member 5-2 is rod-shaped.

[0027] Furthermore, to facilitate adjustment of the lateral position of the support platform structure 5, a limiting adjustment component 4 for limiting the position of the support platform structure 5 is installed on the support platform 3. For example... Figure 5 As shown, the limit adjustment assembly 4 includes two sets of opposing first limit members 4-2 installed on the support platform 3, and an adjustment mounting base 4-1 inserted between the two sets of first limit members 4-2; second limit members 4-3 connected to the support platform 3 are provided at both ends of the adjustment mounting base 4-1; strip holes are provided on the first limit members 4-2 and the second limit members 4-3, and the limit members are connected to the support platform 3 by screws passing through the strip holes; it also includes a fine adjustment slot block 4-4 fixed to the top surface of the adjustment mounting base 4-1, and the fine adjustment locking member 5-2 in the support platform structure 5 is locked with the fine adjustment slot block 4-4.

[0028] By setting the limit adjustment component 4, the lateral position of the support platform structure 5 can be adjusted according to the width of the adhesive film and the size of the glass plate, thereby adjusting the position of the glass plate and adhesive film placed on the support platform structure 5.

[0029] like Figure 1 As shown, to improve the stability of the glass panel and prevent it from shifting or falling due to misoperation, this embodiment also includes a worktable structure 6 installed on the support platform structure 5 for negative pressure adsorption of the glass panel. See further details. Figure 4 In this embodiment, the workbench structure 6 includes a workbench body 6-1 mounted on a support structure 5. The workbench body 6-1 has a negative pressure adsorption area 6-2 and a rolling support area 6-4, wherein the rolling support area 6-4 is lower than the negative pressure adsorption area 6-2. The negative pressure adsorption area 6-2 has a plurality of negative pressure adsorption holes 6-3 arranged in an array, and the plurality of negative pressure adsorption holes 6-3 are connected to a negative pressure gas source via gas pipelines. The rolling support area 6-4 has a plurality of bullseye casters 6-5 arranged in an array.

[0030] In the actual working process, the glass substrate is placed on the workbench structure 6, and then the EVA adhesive film 21 is laid on the glass substrate, and then the smoothing operation is performed, at this time, the end of the EVA adhesive film 21 needs to be pressed to avoid displacement of the EVA adhesive film 21, in order to realize the automation of the above laying operation and reduce the labor intensity, as shown in Figure 1 , the embodiment also includes two groups of clamping assemblies 9 which can move laterally to clamp the EVA adhesive film 21 and lay the EVA adhesive film 21 on the glass plate, and also includes a pressing assembly 8 to press the end of the EVA adhesive film 21 on the end of the glass plate.

[0031] As shown in Figure 1 , specifically, a lifting mounting bracket 18 is fixedly connected on the support table 3, a first transverse guide rail 7 is fixedly connected on the side of the lifting mounting bracket 18, and the extension direction of the first transverse guide rail 7 is consistent with the extension direction of the first limiting piece 4-2. A lower transverse seat 10 is connected on the first transverse guide rail 7 through a sliding block, and the two groups of clamping assemblies 9 and the pressing assembly 8 are both mounted on the lower transverse seat 10; a lower transverse chain wheel pair 11 and a lower transverse driving assembly 12 are mounted on the lifting mounting bracket 18 to drive the lower transverse seat 10 to move along the first transverse guide rail 7.

[0032] Further referring to Figure 3 , the clamping assembly 9 includes a finger air cylinder 9-1 mounted on the lower transverse seat 10, and the finger air cylinder 9-1 is provided with two groups, wherein the spacing between the two groups of finger air cylinders 9-1 is slightly smaller than the width of the adhesive film to be laid, so as to clamp the adhesive film.

[0033] A pair of adhesive film clamping blocks 9-2 for clamping the EVA adhesive film 21 are mounted on the movable end of the finger air cylinder 9-1, and anti-slip protrusions 9-3 are arranged on the opposite surfaces of the two adhesive film clamping blocks 9-2, in order to avoid damaging the adhesive film, wherein the anti-slip protrusions 9-3 of the adhesive film clamping blocks 9-2 are made of soft material such as nitrile rubber, and since the soft material is soft enough, the finger air cylinder 9-1 will not damage the adhesive film when clamping the adhesive film. A thin layer of Teflon is pasted on the outer surface of the nitrile rubber to avoid contamination of the adhesive film material.

[0034] As shown in Figure 3 , in this embodiment, the pressing assembly 8 includes a pressing plate cylinder 8-1 fixedly connected on the lower transverse seat 10 and arranged with the extending end facing outward, and a pressing plate 8-2 is mounted on the extending end of the pressing plate cylinder 8-1, and the pressing plate 8-2 is located between the two groups of clamping assemblies 9. In order to avoid damaging the adhesive film, wherein the pressing plate 8-2 is also made of soft material such as nitrile rubber. A thin layer of Teflon is pasted on the outer surface of the nitrile rubber to avoid contamination of the adhesive film material.

[0035] In addition, in actual working process, the pressing assembly 8 is matched with the plurality of bullseye universal wheels 6-5 installed on the rolling support area 6-4 in the workbench structure 6 when performing the pressing operation, the plurality of bullseye universal wheels 6-5 play a supporting role on the glass substrate when the pressing assembly 8 presses the adhesive film on the end of the glass substrate, avoiding the glass plate being damaged by the pressing assembly 8.

[0036] In addition, in the embodiment, the lower horizontal moving sprocket pair 11 includes a driving sprocket and a driven sprocket which are horizontally opposite and rotationally connected with the lifting mounting bracket 18, and a chain in a closed loop is transmissionally connected between the driving sprocket and the driven sprocket, wherein the lower horizontal moving seat 10 is connected with the chain link of the chain through a mounting member, and a chain guide is fixedly connected with the lifting mounting bracket 18 to guide the chain. The lower horizontal moving driving assembly 12 includes a speed reducer motor fixedly connected with the lifting mounting bracket 18, and a transmission pair is installed between the speed reducer motor and the driving sprocket, wherein the transmission pair can be a sprocket transmission pair, a pulley transmission pair or a gear pair, and the embodiment adopts the sprocket transmission pair.

[0037] In actual working process, the embodiment is placed behind the adhesive film roll unwinding device, first, the glass substrate is placed on the support table structure 5, under the action of the lower horizontal moving driving assembly 12, the lower horizontal moving seat 10 is moved to the end of the first horizontal moving guide rail 7 to facilitate the clamping assembly 9 to clamp the end of the film roll, the free end of the film roll is manually pulled to make the end of the adhesive film enter between the two adhesive film clamping blocks 9-2 which are horizontally opposite, the finger air cylinder 9-1 is started to make the adhesive film clamping blocks 9-2 clamp the adhesive film, then under the driving action of the lower horizontal moving driving assembly 12, the lower horizontal moving seat 10 moves along the first horizontal moving guide rail 7 to pull the end of the adhesive film to realize the unwinding operation of the unwound adhesive film, and the adhesive film is laid on the glass substrate, after the above laying is completed, the adhesive film is cut, which can be manually cut or cut by the cutting structure on the unwinding device. After the cutting operation is completed, the clamping assembly 9 releases the adhesive film, and the lower horizontal moving driving assembly 12 is reset.

[0038] In view of the fact that the process of sticking the EVA film 21 to the glass in this embodiment is mainly to drag the film by the finger cylinder 9-1 in the clamping assembly 9 to cover on the glass, since the area of the film is large, it is difficult to avoid the generation of bubbles when covering on the glass. The bubbles between the EVA film 21 and the glass will cause wrinkles during hot-press packaging, so that the sticking effect of the film to the glass is poor, which will directly affect the light transmittance, output power and service life of the solar packaging assembly. At present, the main method for smoothing the bubbles between the EVA film 21 and the glass is to use a scraper to smooth the bubbles manually. Since the scraper is not flat and the middle part of the glass may be deformed due to its large area, the manual smoothing method has poor effect and the quality is difficult to guarantee, and the efficiency is low.

[0039] In order to solve the above problems, as shown in the drawings, Figure 1 The embodiment further includes an upper transverse moving seat 15 which can move transversely and longitudinally, and a scraping assembly 16 and a roller pressing assembly 17 are installed on the upper transverse moving seat 15.

[0040] Further, in order to drive the upper transverse moving seat 15 to move transversely, the embodiment further includes a lifting mounting seat 20 arranged above the clamping assembly 9, a second transverse moving guide rail 14 is fixedly connected to the lifting mounting seat 20, and the second transverse moving guide rail 14 is arranged in parallel with the first transverse moving guide rail 7; the upper transverse moving seat 15 is slidably connected to the second transverse moving guide rail 14 through a sliding block, and further includes an upper transverse moving sprocket pair 13 and an upper transverse moving driving assembly 19 for driving the upper transverse moving seat 15 to move along the second transverse moving guide rail 14. Further Figure 6 In this embodiment, the upper transverse moving sprocket pair 13 includes a transverse moving driving sprocket 13-4 and a transverse moving driven sprocket 13-1 arranged side by side, a transverse moving transmission chain 13-2 is transmissionally connected between the transverse moving driving sprocket 13-4 and the transverse moving driven sprocket 13-1, and further includes a chain guide 13-3 for supporting and guiding the transverse moving transmission chain 13-2. The upper transverse moving driving assembly 19 includes a transverse moving driving motor 19-1 installed on the lifting mounting seat 20, and a driving transmission pair 19-2 is arranged between the output shaft of the transverse moving driving motor 19-1 and the transverse moving driving sprocket 13-4. The driving transmission pair 19-2 can be a sprocket transmission pair, a belt wheel transmission pair or a gear pair. In this embodiment, the driving transmission pair 19-2 adopts a sprocket transmission pair.

[0041] In addition, in order to drive the upper transverse moving seat 15 to move longitudinally, the embodiment further includes a lifting driving assembly 2 for driving the lifting mounting seat 20 to move longitudinally.

[0042] Further referring to Figure 7The lifting driving assembly 2 comprises two vertically arranged lifting guide rods 2-5, each of which is fixedly connected with the lifting mounting bracket 18 through a rod mounting member. A lifting seat 2-6 is slidably connected with the lifting guide rod 2-5 through a linear bearing, and the lifting mounting seat 20 is connected with the lifting seat 2-6. The lifting driving assembly 2 further comprises a lifting power unit for driving the lifting seat 2-6 to move longitudinally along the lifting guide rod 2-5.

[0043] The lifting power unit comprises a lifting lead screw 2-4 rotatably connected with the lifting mounting bracket 18, the lifting lead screw 2-4 is arranged in parallel with the lifting guide rod 2-5, and the lifting seat 2-6 is connected with the lifting lead screw 2-4 through a lead screw nut. The lifting power unit further comprises a lifting motor 2-1 mounted on the bracket 1, a lifting driving sprocket 2-2 is keyed connected with an output shaft of the lifting motor 2-1, and a lifting driven sprocket 2-3 is keyed connected with the lifting lead screw 2-4, and a chain is transmissionally connected between the lifting driving sprocket 2-2 and the lifting driven sprocket 2-3.

[0044] The lifting motor 2-1 is started to drive the lifting driving sprocket 2-2 keyed connected therewith to rotate, and then drive the lifting lead screw 2-4 to rotate, so as to drive the lifting seat 2-6 and the lifting mounting seat 20 to move longitudinally, and finally realize the purpose of driving the upper transverse moving seat 15 to lift.

[0045] As shown in Figure 2 In the embodiment, the scraping assembly 16 comprises a scraping cylinder 16-9 fixedly connected with the upper transverse moving seat 15 and arranged with the extending end downward, a lifting mounting member 16-1 is mounted on the extending end of the scraping cylinder 16-9, a scraping mounting seat 16-2 is fixedly connected with the lifting mounting member 16-1, a scraping guide rod 16-8 is fixedly connected with the lifting mounting member 16-1, and the scraping guide rod 16-8 is slidably connected with the upper transverse moving seat 15 through a linear bearing. An adjustable mounting plate 16-6 is pivotally mounted on the scraping mounting seat 16-2 through a hinge pin, and two arc-shaped guide grooves 16-7 are oppositely arranged on the scraping mounting seat 16-2, and a screw connected with the adjustable mounting plate 16-6 is slidably arranged in the arc-shaped guide grooves 16-7. The scraping assembly 16 further comprises a scraping plate 16-4 mounted on the adjustable mounting plate 16-6, and the scraping plate 16-4 is specifically mounted in the following manner: a scraping plate backing plate 16-5 and a scraping plate fixed plate 16-3 are mounted on the adjustable mounting plate 16-6, and the scraping plate 16-4 is clamped between the scraping plate backing plate 16-5 and the scraping plate fixed plate 16-3. Through the above arrangement, the scraping plate 16-4 and the EVA adhesive film 21 have an included angle.

[0046] In order to make the doctor blade 16-4 keep proper pressure on the EVA film 21, the doctor assembly 16 further comprises a tension spring installed between the adjustable mounting plate 16-6 and the doctor mounting seat 16-2, one end of the tension spring is connected with the doctor mounting seat 16-2 and the other end is connected with the adjustable mounting plate 16-6. When not working, the doctor blade 16-4 has a certain angle with the horizontal plane, when working, when the doctor blade 16-4 contacts with the EVA film 21, under the action of the tension spring, the doctor blade 16-4 will press on the EVA film 21 with proper force.

[0047] As shown in the drawings, Figure 2 In the present embodiment, the roller assembly 17 comprises a pressure roller 17-1 and further comprises an elastic buffer unit for elastically pressing the pressure roller 17-1 on the EVA film 21. In order to avoid damaging the film, a soft coating such as nitrile rubber is provided on the outer peripheral wall of the pressure roller 17-1. A thin layer of Teflon is pasted on the outer surface of the nitrile rubber to avoid contamination of the film material by the nitrile rubber. Further, the elastic buffer unit comprises a roller mounting seat 17-2 for mounting the pressure roller 17-1, at least two vertical pressure guide rods 17-4 are mounted on the roller mounting seat 17-2, each pressure guide rod 17-4 is slidably connected with the upper cross-moving seat 15 through a linear bearing, wherein the pressure guide rod 17-4 comprises a guide rod body, a guide rod limiting piece 17-5 is mounted on the top of the guide rod body to avoid the pressure guide rod 17-4 from falling off the upper cross-moving seat 15; the elastic buffer unit further comprises a pressure spring 17-3 provided between the upper cross-moving seat 15 and the roller mounting seat 17-2 and sleeved on the pressure guide rod 17-4.

[0048] During the movement of the upper cross-moving seat 15 along the second cross-moving guide rail 14, the roller assembly 17 first performs a preliminary smoothing and defoaming operation on the film, then the doctor assembly 16 performs a doctoring and smoothing operation on the film with proper force, and further performs a defoaming operation.

[0049] Working process:

[0050] The glass substrate is placed on the support table structure 5, the lower cross-moving seat 10 is located at the end of the first cross-moving guide rail 7, the free end of the film roll is manually pulled, the end of the film is manually pulled into the two film clamping blocks 9-2 arranged opposite to each other, the film is clamped by the finger cylinder 9-1, then the lower cross-moving seat 10 is moved along the first cross-moving guide rail 7 under the driving action of the lower cross-moving driving assembly 12, thereby automatically dragging the film to cover on the glass, the film is cut after the film laying is completed, then the film is released by the clamping assembly 9, and the clamping assembly 9 is moved back to the original position under the driving of the lower cross-moving driving assembly 12;

[0051] The lifting motor 2-1 in the lifting driving assembly 2 is started, and the lifting mounting base 20 is driven to move downward. In the process of moving downward of the lifting mounting base 20, the pressing roller 17-1 of the roller pressing assembly 17 is firstly rolled and pressed on the EVA adhesive film 21. After the lifting mounting base 20 moves downward to the preset position, the scraping cylinder 16-9 in the scraping assembly 16 is started, and the scraping plate 16-4 is driven to move downward until the scraping plate 16-4 can be pressed and contacted with the EVA adhesive film 21 with appropriate pressure. The upper transverse driving assembly 19 and the upper transverse chain wheel pair 13 jointly drive the scraping assembly 16 and the roller pressing assembly 17 to move, so as to realize the movement of the scraping plate 16-4 and the pressing roller 17-1 on the EVA adhesive film 21, and further eliminate the bubbles between the EVA adhesive film 21 and the glass substrate. In the actual working process, the position of the scraping plate 16-4 can be adjusted through the scraping cylinder 16-9, and the contact force between the scraping plate 16-4 and the EVA adhesive film 21 is adjusted, so as to adapt to the glass substrates with different thicknesses.

[0052] After the smoothing and defoaming operation is completed, the lifting driving assembly 2 drives the lifting mounting base 20 to move upward and reset, and the upper transverse driving assembly 19 and the upper transverse chain wheel pair 13 drive the scraping assembly 16 and the roller pressing assembly 17 to move transversely and reset, so as to wait for the next smoothing operation.

Claims

1. A device for smoothing air bubbles between EVA film and glass, characterized in that: The device comprises a support table structure (5) with adjustable lateral position, a material placing table structure (6) is installed on the support table structure (5) to adsorb glass plates by negative pressure, two groups of clamping assemblies (9) which can move laterally to clamp EVA adhesive film (21) and lay the EVA adhesive film (21) on the glass plates, a pressing assembly (8) to press the end of the EVA adhesive film (21) on the end of the glass plate, an upper lateral moving seat (15) which can move laterally and longitudinally, a scraping assembly (16) and a roller pressing assembly (17) are installed on the upper lateral moving seat (15), the scraping assembly (16) comprises a scraping plate (16-4) and a scraping cylinder (16-9) to drive the scraping plate (16-4) to move up and down, the roller pressing assembly (17) comprises a pressing roller (17-1) and an elastic buffering unit to press the pressing roller (17-1) on the EVA adhesive film (21) elastically.

2. The device for smoothing the air bubbles between the EVA adhesive film and the glass according to claim 1, characterized in that: A lifting mounting bracket (18) is further included, a first lateral moving guide rail (7) is fixedly connected to the side of the lifting mounting bracket (18), a lower lateral moving seat (10) is connected to the first lateral moving guide rail (7) by sliding block, the two groups of clamping assemblies (9) and the pressing assembly (8) are installed on the lower lateral moving seat (10), a lower lateral moving sprocket pair (11) and a lower lateral moving driving assembly (12) are further included to drive the lower lateral moving seat (10) to move along the first lateral moving guide rail (7).

3. The device for smoothing the air bubbles between the EVA adhesive film and the glass according to claim 2, characterized in that: A lifting mounting seat (20) is further included which is arranged above the clamping assembly (9), a second lateral moving guide rail (14) is fixedly connected to the lifting mounting seat (20), the upper lateral moving seat (15) is connected to the second lateral moving guide rail (14) by sliding block, an upper lateral moving sprocket pair (13) and an upper lateral moving driving assembly (19) are further included to drive the upper lateral moving seat (15) to move along the second lateral moving guide rail (14), a lifting driving assembly (2) is further included to drive the lifting mounting seat (20) to move longitudinally.

4. The device for smoothing the air bubbles between the EVA adhesive film and the glass according to claim 1, wherein the device is characterized in that: The extending end of the scraping cylinder (16-9) is arranged downward and connected to the upper lateral moving seat (15), the scraping assembly (16) further comprises a lifting mounting piece (16-1) installed on the extending end of the scraping cylinder (16-9), a scraping mounting seat (16-2) is installed on the lifting mounting piece (16-1), an adjustable mounting plate (16-6) is pivotally installed on the scraping mounting seat (16-2), an arc-shaped guide groove (16-7) is arranged on the scraping mounting seat (16-2), a screw connected to the adjustable mounting plate (16-6) is arranged in the arc-shaped guide groove (16-7), the scraping plate (16-4) is installed on the adjustable mounting plate (16-6), a tension spring is further included which is installed between the adjustable mounting plate (16-6) and the scraping mounting seat (16-2).

5. The device for smoothing the air bubbles between the EVA adhesive film and the glass according to claim 1, characterized in that: The elastic buffering unit comprises a roller mounting seat (17-2) for mounting the pressing roller (17-1), at least two vertically arranged pressing guide rods (17-4) are mounted on the roller mounting seat (17-2), each pressing guide rod (17-4) is slidably connected with the upper transverse seat (15) through a linear bearing, and a pressing spring (17-3) sleeved on the pressing guide rod (17-4) is arranged between the upper transverse seat (15) and the roller mounting seat (17-2).

6. The device for smoothing the air bubbles between the EVA adhesive film and the glass according to claim 2, characterized in that: The clamping assembly (9) comprises a finger air cylinder (9-1) mounted on the lower transverse seat (10), two film clamping blocks (9-2) for clamping the EVA film (21) are mounted on the finger air cylinder (9-1), and anti-skid ribs (9-3) are arranged on opposite surfaces of the two film clamping blocks (9-2).

7. The device for smoothing the air bubbles between the EVA adhesive film and the glass according to claim 2, characterized in that: The pressing assembly (8) comprises a pressing plate air cylinder (8-1) fixedly connected to the lower transverse seat (10) and arranged in a direction away from the support table structure (5), a pressing plate member (8-2) is mounted on the extending end of the pressing plate air cylinder (8-1), and the pressing plate member (8-2) is located between the two clamping assemblies (9).

8. The device for smoothing the air bubbles between the EVA adhesive film and the glass according to claim 1, characterized in that: The storage workbench structure (6) comprises a workbench body (6-1) mounted on the support table structure (5), a negative pressure adsorption area (6-2) and a rolling support area (6-4) arranged on the workbench body (6-1); a plurality of negative pressure adsorption holes (6-3) arranged in an array are arranged on the negative pressure adsorption area (6-2), and a plurality of bullseye universal wheels (6-5) arranged in an array are arranged on the rolling support area (6-4).

9. The device for smoothing the air bubbles between the EVA adhesive film and the glass according to claim 3, characterized in that: The lifting driving assembly (2) comprises two vertically arranged lifting guide rods (2-5), a lifting seat (2-6) is slidably connected to the lifting guide rods (2-5) through a linear bearing, and the lifting mounting seat (20) is connected with the lifting seat (2-6); the lifting driving assembly (2) further comprises a lifting power unit for driving the lifting seat (2-6) to move longitudinally along the lifting guide rods (2-5).

10. The device for smoothing the air bubbles between the EVA adhesive film and the glass according to claim 3, characterized in that: The upper transverse chain wheel pair (13) comprises a transverse parallel arranged transverse driving sprocket (13-4) and a transverse driven sprocket (13-1), a transverse transmission chain (13-2) is transmissionally connected between the transverse driving sprocket (13-4) and the transverse driven sprocket (13-1), and a chain guide (13-3) for supporting and guiding the transverse transmission chain (13-2) is further included; the structure of the lower transverse chain wheel pair (11) is consistent with that of the upper transverse chain wheel pair (13).

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