OCA laminating mechanism capable of removing bubbles

Abstract

The utility model provides an OCA laminating mechanism capable of removing bubbles, and relates to the technical field of laminating equipment. Comprising a lower fitting cavity and an upper fitting cavity; the lower fitting cavity comprises a lower shell and a fitting platform arranged in the lower shell, the upper fitting cavity comprises an upper shell suitable for being matched with the lower shell to form a vacuum space and an upper fitting platform arranged in the upper shell, and the upper fitting platform is arranged on a moving mechanism; an extending mechanism with a silica gel ball is arranged on one side of the laminating upper platform; the silica gel ball is suitable for moving to the middle of the product after the product is attached, and the extending mechanism is suitable for driving the silica gel ball to press downwards from the middle of the product so that bubbles in the product can be gradually extruded outwards from the middle in a deformation mode. According to the scheme, bubbles in a laminated product can be reduced, and damage to the product is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sticking equipment technical field, specifically, relate to a kind of OCA sticking mechanism of bubble removal. BACKGROUND

[0002] At present, OCA sticking equipment generally includes upper cavity and lower cavity, and the upper cavity and the lower cavity can be closed to form a vacuum space. However, when the upper cavity and the lower cavity are stuck, they are generally in a vacuum environment. Since OCA products need to be stuck, the OCA products may be deformed if they are affected by super vacuum. Therefore, it is generally necessary to stick in a low vacuum environment. However, this makes it possible for bubbles to remain on the product or OCA film during the sticking process, which leads to bubbles in the product after sticking, making it difficult to ensure the quality of the product after sticking. SUMMARY

[0003] The utility model discloses a kind of OCA sticking mechanism of bubble removal, to solve the problem mentioned above.

[0004] The utility model discloses the following scheme:

[0005] An OCA sticking mechanism capable of removing bubbles includes a lower cavity and an upper cavity. The lower cavity includes a lower shell and a sticking platform disposed in the lower shell. The upper cavity includes an upper shell adapted to cooperate with the lower shell to form a vacuum space, and a sticking upper platform disposed in the upper shell. The sticking upper platform is disposed on a moving mechanism, and a protruding mechanism with a silica gel ball is disposed on one side of the sticking upper platform. The silica gel ball is adapted to move to the middle of the product after sticking. The protruding mechanism is adapted to drive the silica gel ball to press down from the middle of the product, so as to gradually extrude the bubbles in the product from the middle to the outside by deformation.

[0006] Further, the sticking upper platform includes a vacuum jig table and a heating plate. The heating plate is adapted to heat the vacuum jig platform.

[0007] Further, a bionic adhesive suction cup is disposed on the vacuum jig table. The bionic adhesive suction cup is adapted to adhere to the product to prevent the product from falling off.

[0008] Further, a through hole is provided in the middle of the vacuum jig table. The bionic adhesive suction cup is disposed at the through hole through a micro telescopic module. The bionic adhesive suction cup is in and out of the through hole through the micro telescopic module.

[0009] Further, a UV light source is disposed on the outside of the upper shell. The UV light source is adapted to pre-solidify the product after sticking.

[0010] Further, the upper cavity is provided with a lifting Z-axis to drive the upper platform to synchronously lift with the upper shell; a lifting assembly is arranged between the upper platform and the upper shell to drive the upper platform to lift in the upper shell.

[0011] Further, the extension mechanism adopts a telescopic air cylinder.

[0012] Further, the silica gel ball forms a water drop shape.

[0013] Beneficial effects:

[0014] The OCA bonding mechanism capable of removing bubbles provided by the utility model can be bonded in a vacuum environment by setting a closable vacuum bonding mechanism. By setting a movable silica gel ball in the upper cavity, the silica gel ball can be moved above the bonded product after bonding, and the silica gel ball can be gradually deformed to extrude bubbles from the middle to the outside of the product by pressing from the middle. The structure of the silica gel ball can be adapted to the bonding of arc-shaped products. The quality and efficiency of the bonded product are improved by the scheme. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structure schematic view of the OCA bonding mechanism capable of removing bubbles of the utility model embodiment;

[0016] Figure 2 is a structure schematic view of the lower cavity of the OCA bonding mechanism capable of removing bubbles of the utility model embodiment;

[0017] Figure 3 is a cross-sectional structure schematic view of the bonding platform of the OCA bonding mechanism capable of removing bubbles of the utility model embodiment;

[0018] Figure 4 is a structure schematic view of the bonding platform of the OCA bonding mechanism capable of removing bubbles of the utility model embodiment;

[0019] Figure 5 is a structure schematic view of the upper cavity of the OCA bonding mechanism capable of removing bubbles of the utility model embodiment;

[0020] Figure 6 is a structure schematic view of the upper platform of the OCA bonding mechanism capable of removing bubbles of the utility model embodiment;

[0021] Figure 7 is a structure schematic view of the silica gel ball of the OCA bonding mechanism capable of removing bubbles of the utility model embodiment;

[0022] Figure 8 is a bonding process schematic view of the OCA bonding mechanism capable of removing bubbles of the utility model embodiment;

[0023] Reference signs:

[0024] The lower cavity 21, the feeding platform 211, the bonding platform 212, the mounting part 2121, the bonding jig 2122, the movable part 2123, the limiting step 2124, the guide rail 2125, the homing cylinder 2126, the adjusting screw 2127, the spring part 2128, the pressure sensor 2129, the standard gauge block 2120, the height measuring sensor 213, the Mark camera 214, the six-axis adjustment platform 215, the XYθ axis mechanism 2151, the horizontal adjustment mechanism 2152, the lifting mechanism 21521, the positioning point 21522, the bellows 216, the lower shell 217, the upper cavity 22, the upper bonding platform 221, the lifting Z axis 222, the bionic adhesive suction cup 2211, the silica gel ball 223, the extension mechanism 224, the UV light source 225, the upper shell 226, the moving mechanism 227, the heating plate 228. DETAILED DESCRIPTION

[0025] In combination Figures 1 to 8 As shown, the embodiment provides an OCA bonding mechanism capable of removing bubbles, which comprises a lower cavity 21 and an upper cavity 22. The lower cavity 21 comprises a lower shell 217 and a bonding platform 212 arranged in the lower shell 217. The upper cavity 22 comprises an upper shell 226 adapted to cooperate with the lower shell 217 to form a vacuum space, and an upper bonding platform 221 arranged in the upper shell 226. The upper bonding platform 221 is arranged on a moving mechanism 227, and one side of the upper bonding platform 221 is provided with an extension mechanism 224 with a silica gel ball 223. The silica gel ball 223 is adapted to move to the middle of the product after bonding, and the extension mechanism 224 is adapted to drive the silica gel ball 223 to press down from the middle of the product, so as to gradually extrude the bubbles in the product from the middle to the outside by deformation.

[0026] In combination Figures 5 to 8 As shown, in the embodiment, the upper cavity 22 can be arranged on a fixed support, and the fixed support is provided with a lifting Z axis 222 adapted to drive the upper cavity 22 to move up and down as a whole, so as to be movably connected with the lower cavity 21. The upper cavity 22 comprises an upper shell 226 and an upper bonding platform 221 arranged in the upper shell 226. The upper shell 226 is adapted to form a sealed space with the lower shell 217, and a vacuum space under the action of a vacuum pump. The upper bonding platform 221 is connected in the upper shell 226 through a lifting assembly. The upper bonding platform 221 is driven to lift or lower through the independent lifting assembly, so as to continue to drive the upper bonding platform 221 to lower after the upper shell 226 and the lower shell 217 form a vacuum, so that the product is bonded. The setting of this step can ensure that there is enough time to form the required vacuum degree in the vacuum space during bonding, thereby reducing the generation of bubbles.

[0027] Continuously bonding Figures 5 to 8 As shown, the bonding upper platform 221 is connected to a moving mechanism 227, which can drive the bonding upper platform 221 to move away from the bonding platform 212 after the bonding is completed. The moving mechanism 227 can adopt a ball screw mechanism to achieve precise control of the bonding upper platform 221. The bonding upper platform 221 includes a vacuum jig table, a heating plate 228 arranged on the vacuum jig table, and a bionic adhesive suction cup 2211. The heating plate 228 is suitable for heating the bonding upper platform 221, and the bionic adhesive suction cup 2211 is suitable for adhering the product to prevent it from falling. The vacuum jig table is provided with dense vacuum holes connected to a vacuum device for providing negative pressure suction. A through hole is arranged in the middle of the vacuum jig table, and the bionic adhesive suction cup 2211 is arranged at the through hole through a micro telescopic module. The bionic adhesive suction cup 2211 can enter and exit the through hole through the micro telescopic module. Here, the heating plate can preheat the bonded OCA, PSA, and other products to facilitate bonding. It should be noted that the conventional bonding upper cavity 22 generally does not have a heating function. This is because the OCA film product is heated, and the suction force of the vacuum jig table needs to be reduced synchronously to prevent the OCA from being deformed due to the large vacuum suction force. At this time, under the action of gravity, the OCA film has the risk of falling. In the present scheme, by arranging the bionic adhesive suction cup 2211 on the bonding upper platform 221, the product can be adhered and fixed during heating, effectively preventing the product from falling. Here, the bionic adhesive suction cup 2211 can adopt the product of ADHESION brand, model ADFR-MICRO40, which can physically simulate the adhesion principle without damaging the target adhesion surface, can be reused, can withstand high and low temperatures, can be used in a vacuum environment and has no residue, and does not affect subsequent bonding. Its working temperature can be between -40℃ and 130℃, and is not affected by the heating sheet. By arranging the bionic adhesive suction cup 2211, the heating device can be arranged in the bonding upper cavity 22 to preheat the product.

[0028] Bonding Figures 5 to 8 Continuously bonding Figures 5 to 8As shown, in the preferred embodiment, one side of the upper laminating platform 221 is provided with a silica gel ball 223 connected to an extension air cylinder 224 connected to the moving mechanism, which is suitable for moving to the middle of the product after the upper and lower products are laminated and pressing down to gradually extrude the air bubbles in the laminated surface of the product from the middle position. Here, when the upper and lower products are laminated, the lifting assembly drives the silica gel ball 223 and the upper laminating platform 221 to rise, and then the moving mechanism moves to make the upper laminating platform 221 leave the position above the product, and transports the silica gel ball 223 to the position directly above the product and in the center of the product, and then the extension air cylinder 224 extends to make the pointed part of the silica gel ball 223 first contact the middle position of the product, and then the extension air cylinder 224 continues to move to make the silica gel ball 223 deform and gradually extrude the deformation from the middle of the product to the outside, so that the residual air bubbles in the product are extruded from the middle to the outside, avoiding the residual air bubbles. It should be noted that when the extension air cylinder retracts, the lowest end of the silica gel ball 223 is higher than the upper laminating platform 221, preventing interference with other components during lamination. It should be noted that the provision of the silica gel ball 223 can also be used for laminating products with an arc. In products with an arc, the lamination of the arc part is difficult to control, on the one hand the jig is difficult to process, and on the other hand the lamination surface is difficult to control. By providing the silica gel ball 223, the bottom end of the silica gel ball 223 can be pressed against the product with an arc after laminating the flat part to make the OCA film sheet laminated with the product. Since the silica gel ball 223 can deform according to the pressure surface, it has a self-adaptive effect, so it not only helps to extrude air bubbles, but also realizes the lamination of products with an arc part.

[0029] In addition, a UV light source 225 is provided outside the upper laminating cavity 22, which can move the lower laminating cavity 21 to the UV light source 225 for pre-fixing after lamination. The lifting assembly and the upper shell 226 are also provided with a bellows 216 to ensure the vacuum degree of the vacuum space.

[0030] In combination Figures 1 to 4As shown, the fitting lower cavity 21 comprises a lower shell 217 and a fitting platform 212 arranged in the lower shell 217, and a six-axis adjusting platform 215 is arranged below the fitting platform 212 to adjust parallelism and position of the fitting platform 212; wherein the six-axis adjusting platform 215 comprises an XYθ-axis mechanism 2151 and a horizontal adjusting mechanism 2152 arranged above the XYθ-axis mechanism 2151; the horizontal adjusting mechanism 2152 is adapted to adjust the horizontal degree of the fitting platform 212 by a three-point positioning manner; the fitting upper cavity 22 comprises an upper shell 226 adapted to cooperate with the lower shell 217 to form a vacuum space and a fitting upper platform 221 arranged in the upper shell 226, and a lifting Z-axis 222 is connected in the fitting upper platform 221 to drive the fitting upper platform 221 to descend after the upper shell 226 and the lower shell 217 form the vacuum space, so that the product adsorbed on the fitting upper platform 221 is fitted with the product in the fitting platform 212.

[0031] In combination Figures 1 to 4As shown, the fitting platform 212 includes a mounting portion 2121, a fitting jig 2122, a movable component 2123, a guide rail 2125, a homing cylinder 2126, an adjusting screw 2127, a spring member 2128, a pressure sensor 2129, and a standard gauge block 2120. The movable component 2123 is movably arranged in the mounting portion 2121 through the guide rail 2125. The adjusting screw 2127 is arranged on the movable component 2123, and the bottom of the adjusting screw 2127 is provided with the spring member 2128. The bottom of the spring member 2128 is provided with the pressure sensor 2129. The initial pressure of the spring member 2128 is adjusted through the adjusting screw 2127. The fitting jig 2122 is connected above the movable component 2123. A plurality of homing cylinders 2126 are arranged on the periphery of the mounting portion 2121. The homing cylinders 2126 are adapted to be extended after the fitting is completed to drive the fitting jig 2122 and the movable component 2123 to reset. A limiting step 2124 is arranged on the movable component 2123. The mounting portion 2121 is provided with the standard gauge block 2120 which is adapted to the limiting step 2124. The movable component 2123 is upper-limited through the standard surface of the standard gauge block 2120. In this embodiment, the pressure sensor 2129 is connected to a pressure display module. The initial display pressure of the pressure sensor 2129 is adjusted through the adjusting screw 2127. During the pressing process, the pressure display module can be used to control the fitting force in real time. For example, when the pressure sensor 2129 displays a predetermined value, the fitting action is automatically stopped. In this embodiment, the fitting force is relatively small during the fitting. The friction force exists between the movable component 2123 and the mounting portion 2121, so that the movable component 2123 cannot be reset after the fitting is completed. Therefore, the homing cylinder 2126 is arranged to drive the movable component 2123 to reset after the fitting is completed, thereby driving the fitting jig 2122 to reset. The movable component 2123 and the mounting portion 2121 are limited through the limiting step 2124. Since the step surface of the mounting portion 2121 is inside, it is difficult to process the flatness. If the limiting is directly performed through the step surfaces of the movable component 2123 and the mounting portion 2121, the horizontality problem exists. In particular, after each fitting, the horizontality of the fitting jig 2122 after resetting is different. Therefore, the standard gauge block 2120 is arranged on the step surface of the mounting portion 2121. The standard gauge block 2120 is made through fine processing, and the surface flatness is high. The movable component 2123 is upper-limited through the standard surface of the standard gauge block 2120. The horizontality of the fitting jig 2122 after resetting each time is the same, and the horizontal error is reduced as much as possible to reduce the product fitting degree.

[0032] The height sensor 213 and the Mark camera 214 are arranged outside the lower laminating chamber 217 and are arranged on the XYZ axis movement mechanism which can drive the height sensor 213 and the Mark camera 214 to move into the upper laminating chamber 22 and the lower laminating chamber 21 to take pictures of the products. Alternatively, an upper CCD camera and a lower CCD camera can be arranged on one side of the height sensor 213 to take pictures of the shapes of the products on the laminating platform 212 and the upper laminating platform 221 respectively. The height sensor 213 can measure the distance between the upper and lower products, the six-axis adjustment platform adjusts the level according to the sensor measurement value to make the upper and lower products parallel, the CCD camera or the Mark camera 214 takes pictures of the shapes of the products, and the six-axis adjustment mechanism is adjusted to make the upper and lower products overlap.

[0033] The six-axis adjustment platform 215 includes an XYθ axis mechanism 2151 and a horizontal adjustment mechanism 2152 arranged above the XYθ axis mechanism 2151; the horizontal adjustment mechanism 2152 is adapted to adjust the levelness of the laminating platform 212 by three-point positioning. Specifically, the horizontal adjustment mechanism 2152 includes three lifting mechanisms 21521 connected below the laminating platform 212 to adjust the levelness of the plane of the laminating platform 212 by three-point positioning; the XYθ axis mechanism 2151 is adapted to adjust the position of the laminating platform 212 to make the products in the lower laminating chamber 21 overlap with the products in the upper laminating chamber 22. The three lifting mechanisms 21521 adopt the mode of linear motor driving inclined wedge block to slide and lift on another inclined wedge block to accurately control the height of each positioning point 21522. The three lifting mechanisms 21521 are respectively connected with a positioning point 21522, and the three positioning points 21522 are arranged in an equilateral triangle position, which can adjust the levelness of the jig platform arranged on the six-axis adjustment platform 215 by three points forming a plane. The XYθ axis mechanism 2151 is adapted to drive the jig platform to adjust the position in the plane to be suitable for laminating with the film or product on the upper laminating chamber 22. The XYθ axis mechanism 2151 includes an X-axis movement mechanism, a Y-axis movement mechanism and a θ-axis movement mechanism, wherein the X-axis movement mechanism and the Y-axis movement mechanism are used to adjust the position of the product in the plane, and the θ-axis movement mechanism is used to adjust the angle of the product in the plane. Here, the position is adjusted by the XYθ axis mechanism 2151, and the height level is adjusted by the horizontal adjustment mechanism 2152, so that the product alignment of the upper and lower chambers can be ensured. The six-axis adjustment platform 215 arranged in this embodiment can ensure that the theoretical comprehensive accuracy of parallelism reaches 9 μm.

[0034] In the embodiment, the lower lamination cavity 21 is further provided with a material placing platform 211, which is arranged on one side of the lamination platform 212 and has a lower height than the lamination platform 212 to prevent interference during lamination. The material placing platform 211 can be used for temporary material placing and serves as a temporary transfer station. For example, a product to be laminated on the upper platform 221 can be first placed on the material placing platform 211 and then moved to the position directly below the upper platform 221, and then the upper platform 221 is lowered to adsorb the product on the material placing platform 211. The material placing platform 211 can make full use of the space in the lower housing 217. In addition, the lamination platform 212 is provided with a heating device to heat the product. The lower housing 217 and the six-axis adjustment mechanism are provided with a bellows 216 to ensure the vacuum degree of the vacuum space. Further, the connection part of the upper housing 226 and the lower housing 217 can be provided with rubber material for alignment and lamination, so that the gas is not easy to enter after the upper housing 226 and the lower housing 217 form a vacuum space.

[0035] In combination Figure 1 As shown in the drawings, in an embodiment, the lower lamination cavity 21 and the upper lamination cavity 22 are both provided with two, and the two lower lamination cavities 21 can cooperate with the two upper lamination cavities 22 to form a lamination vacuum space. The two lower lamination cavities 21 are arranged on the horizontal movement mechanism, so that any one of the two lower lamination cavities 21 can cooperate with one of the upper lamination cavities 22 for lamination. Through the scheme, the lamination efficiency can be improved, and two sets of upper lamination cavities 22 and lower lamination cavities 21 can be used to laminate the product repeatedly to laminate multiple layers of products on one device.

[0036] It should be noted that the control system is arranged in the embodiment to coordinate and control, which is used to receive measurement and shooting information of the CCD and the height measuring sensor 213, and convert the information into coordinate information after analysis and processing, and then adjust through the movement mechanism. Meanwhile, the carrying mechanism is arranged to carry the product into the lower lamination cavity 21. The carrying mechanism and the control system are prior art, which will not be described here.

[0037] Through the embodiment, the adjustment of the upper and lower product alignment and the pressure control effect are greatly improved, and the quality and efficiency of the upper and lower product lamination are improved.

[0038] It should be understood that: the above is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments, and any technical solution belonging to the idea of the present application belongs to the protection scope of the present application.

[0039] The above introduction of the drawings used in the embodiments only shows some embodiments of the utility model, and should not be regarded as limitation to the scope. For ordinary skilled in the art, other related drawings can also be obtained according to the drawings without creative labor.

Claims

1. An OCA bonding mechanism capable of removing air bubbles, comprising a lower bonding cavity and an upper bonding cavity; the lower bonding cavity comprising a lower housing and a bonding platform disposed within the lower housing, the upper bonding cavity comprising an upper housing adapted to cooperate with the lower housing to form a vacuum space and a bonding upper platform disposed within the upper housing, characterized in that, The bonding platform is mounted on the moving mechanism, and an extension mechanism with a silicone ball is provided on one side of the bonding platform. The silicone ball is adapted to move to the middle of the product after the product is bonded, and the extension mechanism is adapted to drive the silicone ball to press down from the middle of the product, so as to gradually squeeze the air bubbles in the product from the middle outward through deformation.

2. The OCA bonding mechanism capable of removing air bubbles according to claim 1, characterized in that, The bonding platform includes a vacuum fixture table and a heating plate, the heating plate being adapted to heat the vacuum fixture table.

3. The OCA bonding mechanism capable of removing air bubbles according to claim 2, characterized in that, The vacuum fixture is equipped with a biomimetic adhesive suction cup, which is suitable for adhering to products to prevent them from falling off.

4. The OCA bonding mechanism capable of removing air bubbles according to claim 3, characterized in that, The vacuum fixture has a through hole in the middle, and the bionic adhesive suction cup is set at the through hole through a micro telescopic module, so that the bionic adhesive suction cup can move in and out of the through hole.

5. The OCA bonding mechanism capable of removing air bubbles according to claim 1, characterized in that, A UV light source is provided on the outer side of the upper housing, which is suitable for pre-curing the product after it is bonded.

6. The OCA bonding mechanism capable of removing air bubbles according to claim 1, characterized in that, The upper cavity is provided with a lifting Z-axis to drive the upper platform and the upper housing to move up and down synchronously; a lifting assembly is provided between the upper platform and the upper housing to drive the upper platform to move up and down within the upper housing.

7. The OCA bonding mechanism capable of removing air bubbles according to claim 1, characterized in that, The extension mechanism uses a telescopic cylinder.

8. The OCA bonding mechanism capable of removing air bubbles according to claim 1, characterized in that, The silicone spheres are shaped like water droplets.

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