Side edge coating equipment for touch screen processing

Abstract

The invention provides side edge coating equipment for touch screen machining, relates to the technical field of touch screen manufacturing, and solves the problem that in the prior art, the surface mounting quality of a cover plate and a functional piece is poor. According to the dispensing equipment, the dispensing machine, the pre-curing device and the gluing machine are sequentially arranged in the direction from the upstream to the downstream along the conveying line, a plurality of liquid point-shaped glue spots which are arranged at intervals can be applied to the cover plate through the dispensing equipment firstly, and then the point-shaped glue spots are converted into semi-solid point-shaped glue blocks through the pre-curing device; and applying a liquid glue layer connected with at least part of the dotted glue blocks to the cover plate by using a gluing machine. Therefore, certain limiting and positioning effects can be achieved on the liquid adhesive layer through the point-shaped adhesive blocks, so that the flowing direction and the flowing degree of adhesive liquid during mounting are effectively controlled in the follow-up overturning process of the cover plate and the mounting process of the functional piece, the adhesive overflowing condition can be prevented, the deflection and deviation conditions of the cover plate are reduced, and the service life of the cover plate is prolonged. The liquid glue layer is promoted to be filled into a small gap between the cover plate and the functional sheet, and the mounting quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of touch screen manufacturing, and specifically, to a side coating device for touch screen processing. Background Art

[0002] A touch screen is a core component for human-computer interaction, which is generally assembled by bonding two parts, namely a functional sheet and a cover plate. According to the differences in product application scenarios, mainly two bonding processes, namely edge frame bonding and full bonding, are adopted. The former forms an air gap layer through peripheral dispensing, and the latter uses liquid optical glue to achieve full-surface bonding.

[0003] The production process of a touch screen mainly includes processes such as feeding of substrates (functional sheet and cover plate), precise dispensing of the cover plate, bonding and assembly, and discharging of finished products (touch screen). Before bonding the cover plate and the functional sheet, the cover plate needs to be first coated with optical glue by a dispensing device, and then the cover plate coated with glue is turned over by a flipping mechanism and transported to a bonding station to be bonded with the functional sheet to finally obtain a touch screen.

[0004] Currently, there are problems with poor bonding quality between the cover plate and the functional sheet, such as glue overflow, uneven bonding, misalignment, etc. Summary of the Invention

[0005] The purpose of the present invention is to design a side coating device for touch screen processing to solve the problem of poor bonding quality between the cover plate and the functional sheet.

[0006] The present invention is achieved by the following technical solutions: A side coating device for touch screen processing provided by the present invention includes a dispensing device, and the dispensing device includes a conveyor line and a dispenser, a pre-curing device, and a coating machine arranged in sequence along the conveying direction of the conveyor line; the conveyor line is used to receive and convey a cover plate along its conveying direction; the dispenser is arranged corresponding to the dispensing area of the conveyor line to apply a plurality of spaced-apart liquid dot-shaped glue spots to the upper surface of the cover plate passing through the dispensing area; the pre-curing device is arranged corresponding to the pre-curing area of the conveyor line to convert all the dot-shaped glue spots on the cover plate passing through the pre-curing area into semi-solid dot-shaped glue blocks; the coating machine is arranged corresponding to the coating area of the conveyor line to apply a layer of liquid glue layer connected to at least part of the dot-shaped glue blocks to the upper surface of the cover plate passing through the coating area.

[0007] When adopting the above setup structure, the dispensing device arranges a dispenser, a pre-curing device, and a coating machine in sequence from the upstream to the downstream along the conveyor line, enabling the dispensing device to perform multi-point dispensing, pre-curing, and coating operations on the cover plates conveyed on the conveyor line successively. In this way, the liquid dot-shaped glue spots can be transformed into semi-cured dot-shaped glue blocks by the pre-curing device to restrict the flowing ability of the liquid glue layer when passing over the dot-shaped glue blocks on the upper surface of the cover plate, playing a certain role in restricting and positioning the liquid glue layer. During the subsequent flipping of the cover plate and the mounting process with the functional sheet, the liquid glue layer will not flow uncontrollably outward or to one side excessively, effectively controlling the flow direction and degree of the glue liquid during mounting, effectively preventing glue overflow, reducing the skew and offset of the cover plate, and promoting the filling of the liquid glue layer into the tiny gaps between the cover plate and the functional sheet to improve the mounting quality.

[0008] Further, to better implement the present invention, the following setup structure is specifically adopted: The side coating device for touch screen processing further includes a first stock table and a loading mechanism. The top surface of the first stock table is used to place the cover plates, and the first stock table is located on the side of the dispensing area of the conveyor line; the loading mechanism includes a connected first loading arm and a transverse movement device. The first loading arm is movably arranged on the top surface of the first stock table, and the transverse movement device is used to drive the first loading arm to reciprocate horizontally to push the cover plates located on the top surface of the first stock table to the dispensing area of the corresponding side of the conveyor line.

[0009] Further, to better implement the present invention, the following setup structure is specifically adopted: One set of the above-mentioned dispensing devices is arranged on each of the opposite sides in the horizontal direction of the first stock table.

[0010] When adopting the above setup structure, after arranging one set of dispensing devices on each of the opposite sides in the horizontal direction of the first stock table and cooperating with the first loading arm that can reciprocate horizontally to push the cover plates, double-directional loading in the horizontal direction can be achieved, that is, by utilizing the return process, two loading operations can be completed in one reciprocating stroke. Therefore, the system waiting time can be reduced to improve the loading efficiency of the side coating device for touch screen processing and the subsequent coating efficiency.

[0011] Further, to better implement the present invention, the following setup structure is specifically adopted: The conveyor line is longitudinally arranged.

[0012] When adopting the above setup structure, arranging the dispensing devices on the transverse sides of the first stock table and longitudinally arranging the conveyor line of the dispensing devices can make the structural arrangement of the side coating device for touch screen processing more compact.

[0013] Furthermore, to better implement the present invention, the following setting structure is particularly adopted: The feeding mechanism includes a first hopper disposed above the first stock preparation table. The bottom of the first hopper is provided with a discharge port, and a first gap for discharging materials is formed between the discharge port and the top surface of the first stock preparation table.

[0014] When the above setting structure is adopted, the first hopper above the first stock preparation table can continuously and timely supply cover plates to the first stock preparation table, ensuring the continuity and stability of the feeding process.

[0015] Furthermore, to better implement the present invention, the following setting structure is particularly adopted: The dispensing device further includes a tail-end tray disposed at the end in the conveying direction of the conveyor line for receiving the cover plates output by the conveyor line. The top surface of the tail-end tray is provided with positioning grooves for positioning the cover plates.

[0016] Furthermore, to better implement the present invention, the following setting structure is particularly adopted: The end wall of the positioning groove in the conveying direction of the conveyor line is provided with negative pressure suction ports for adsorbing the sides of the cover plates.

[0017] When the above setting structure is adopted, after the negative pressure suction ports are provided on the groove wall of the positioning groove facing the conveyor line, a lateral negative pressure attraction force can be applied to the cover plates entering the positioning groove to prompt the cover plates to be in the correct position, facilitating the subsequent operation process.

[0018] Furthermore, to better implement the present invention, the following setting structure is particularly adopted: The tail-end tray is inclined downward in the conveying direction of the conveyor line.

[0019] When the above setting structure is adopted, the tail-end tray inclined downward in the conveying direction can enable the cover plates to further slide to the correct position in the positioning groove by gravity after coming out of the conveyor belt or can be conveniently attracted by the negative pressure suction ports.

[0020] Furthermore, to better implement the present invention, the following setting structure is particularly adopted: The side coating device for touch screen processing further includes a flipping mechanism connected to the tail-end tray. The flipping mechanism includes a flip plate, a flipping motor connected to the flip plate, and negative pressure suction cups arranged in an array on the flip plate. The flip plate and the negative pressure suction cups are located below the tail-end tray, and the negative pressure suction cups face upward corresponding to an opening provided in the middle of the tail-end tray. Among them, the flipping motor can drive the flip plate and the negative pressure suction cups to move upward through the opening.

[0021] When the above setting structure is adopted, the flip plate and the negative pressure suction cups are located below the tail-end tray and can be flipped upward to pass through the opening provided in the middle of the tail-end tray. The cover plates coated with glue can be flipped to the next working station in only one step, and the connection efficiency with the mounting station is relatively high.

[0022] Furthermore, to better implement the present invention, the following structural settings are specifically adopted: The side coating device for touch screen processing further includes a second stock preparation table and a mounting platform. The top surfaces of the second stock preparation table and the mounting platform are both used to place functional chips. The mounting platform is connected to the flipping mechanism for receiving the cover plate. The loading mechanism further includes a second loading arm connected to the transverse movement device. The second loading arm is fixedly connected to the first loading arm and is movably arranged on the top surface of the second stock preparation table. The transverse movement device is used to drive the second loading arm to reciprocate horizontally to push the functional chips located on the top surface of the second stock preparation table to the top surface of the corresponding side of the mounting platform.

[0023] When the above structural settings are adopted, the second loading arm is fixedly connected to the first loading arm, realizing the synchronous loading of the cover plate and the functional chips.

[0024] Furthermore, to better implement the present invention, the following structural settings are specifically adopted: The loading mechanism includes a second hopper arranged above the second stock preparation table. The bottom of the second hopper is provided with a discharge port, and a second gap for discharging is formed between the bottom of the second hopper and the top surface of the second stock preparation table.

[0025] When the above structural settings are adopted, the second hopper above the second stock preparation table can continuously and timely supply functional chips to the second stock preparation table, ensuring the continuity and stability of the loading process.

[0026] Furthermore, to better implement the present invention, the following structural settings are specifically adopted: The pre-curing device is set as a light-curing device for semi-curing the dot-shaped glue spots into dot-shaped glue blocks by irradiating light, or is set as a heat-curing device for semi-curing the dot-shaped glue spots into dot-shaped glue blocks by heating.

[0027] Furthermore, to better implement the present invention, the following structural settings are specifically adopted: The dispensing machine includes a first three-axis slide table and a dot-shaped dispensing head installed at the output end of the first three-axis slide table. The gluing machine includes a second three-axis slide table and a strip-shaped dispensing head installed at the output end of the second three-axis slide table or multiple dispensing heads with dot-shaped glue outlets arranged side by side.

[0028] The present invention has the following advantages and beneficial effects: In the present invention, the dispensing device arranges a dispenser, a pre-curing device, and a coating machine in sequence from upstream to downstream along the conveying line, so that the dispensing device can perform multi-point dispensing, pre-curing, and coating operations on the cover plate conveyed on the conveying line successively. In this way, the liquid dot-shaped glue spots can be transformed into semi-cured dot-shaped glue blocks through the pre-curing device to limit the flowing ability of the liquid glue layer when passing through the dot-shaped glue blocks on the upper surface of the cover plate, so as to play a certain limiting and positioning role on the liquid glue layer. During the subsequent flipping of the cover plate and the mounting process with the functional sheet, the liquid glue layer will not flow uncontrollably outward or to one side, and the flowing direction and degree of the glue liquid during mounting can be effectively controlled, effectively preventing glue overflow, reducing the situation of cover plate skew and offset, promoting the filling of the liquid glue layer into the tiny gap between the cover plate and the functional sheet, and improving the mounting quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1 is the external view schematic diagram of the side coating device for touch screen processing; Figure 2 shows the internal structure of one side in the longitudinal direction of the side coating device for touch screen processing; Figure 3 is Figure 2 the enlarged view of the partial A in , where the dot-shaped glue spots on the surface of the cover plate are schematically shown in the figure; Figure 4 shows the internal structure of the other side in the longitudinal direction of the side coating device for touch screen processing; Figure 5 is Figure 4 the enlarged view of the partial B in ; Figure 6 In Figure 4 on the basis of , the second stockpiling table and the second hopper are hidden; Figure 7 is Figure 6 the enlarged view of the partial C in ; Figure 8 In Figure 6 on the basis of , the pressure roller assembly and the touch screen on the fixture are further hidden; Figure 9 is Figure 8 the enlarged view of the partial D in ; Figure 10 shows the internal structure of the other side in the transverse direction of the side coating device for touch screen processing; Figure 11 is Figure 10 an enlarged view of local E in; Figure 12 shows the downstream side structure in the longitudinal view of the side coating device for touch screen processing; Figure 13 is Figure 12 an enlarged view of local F in; Figure 14 shows the upstream side structure in the longitudinal view of the side coating device for touch screen processing; Figure 15 shows the production process of the cover plate by the dispensing device.

[0031] The markings in the figure are: 100, side coating device for touch screen processing; 200, functional sheet; 300, cover plate; 400, touch screen; 501, dot-shaped glue spot; 502, dot-shaped glue block; 503, liquid glue layer; 10, first stock preparation table; 20, dispensing device; 21, conveyor line; 22, dispenser; 221, first three-axis slide; 222, dot-shaped dispensing head; 23, pre-curing device; 24, glue coating machine; 241, second three-axis slide; 242, strip-shaped dispensing head; 25, end tray; 251, positioning groove; 252, longitudinal stop bar; 253, transverse stop bar; 254, negative pressure suction port; 255, opening; 30, loading mechanism; 31, first loading arm; 32, transverse movement device; 33, first hopper; 331, first gap; 34, second loading arm; 35, second hopper; 351, second gap; 40, flipping mechanism; 41, turning plate; 42, flipping motor; 43, negative pressure suction cup; 50, second stock preparation table; 60, mounting platform; 61, support; 62, fixture; 621, groove; 622, notch; 623, bottom negative pressure suction port; 624, lateral negative pressure suction port; 70, pressure roller assembly; 71, wheel frame; 72, pressure roller; 73, ratchet; 74, pawl; 75, buffer spring; 76, third gap; 81, unloading arm; 90, output conveyor belt. Specific embodiments

[0032] To make the objectives, technical solutions, and advantages of the present invention more clear, the following will provide a detailed description of the technical solutions of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope protected by the present invention.

[0033] In the description of the present application, it should be noted that unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] The terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and do not limit the number of objects. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims indicates at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after. In the description of the present application, it should also be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The present application provides a side coating device for touch screen processing, as Figures 1 - 15 shown, and is specifically configured as the following structure: As Figure 1 shown, the side coating device 100 for touch screen processing includes a frame, a mounting platform installed on the frame, and a housing surrounding the frame. An output conveyor belt 90 with an upstream end located inside the housing is provided outside the housing.

[0036] As Figure 2 and Figure 3As shown, the side coating device 100 for touch screen processing includes a dispensing device 20, and the dispensing device 20 includes a conveyor line 21, a dispenser 22, a pre-curing device 23, and a glue coater 24 installed on the installation platform.

[0037] The conveyor line 21 is sequentially arranged with a dispensing area, a pre-curing area, and a glue coating area in its conveying direction. The conveyor line 21 is used to receive the cover plate 300 and convey the cover plate 300 along its conveying direction to sequentially pass through the dispensing area, the pre-curing area, and the glue coating area. The dispenser 22, the pre-curing device 23, and the glue coater 24 are respectively arranged corresponding to the dispensing area, the pre-curing area, and the glue coating area on the conveyor line 21, so that the dispenser 22 is located upstream of the pre-curing device 23, and the pre-curing device 23 is located upstream of the glue coater 24.

[0038] The glue outlet of the dispenser 22 is a round opening with a small opening size, which is used to output liquid dot-shaped optical glue spots. When the cover plate 300 passes through the dispensing area on the conveyor line 21, refer to Figure 3 , the dispenser 22 can be controlled to apply liquid dot-shaped glue spots 501 to the upper surface of the cover plate 300. Specifically, the dispenser 22 can adopt a vision optical glue dispenser, which can adaptively adjust the position of the glue outlet according to the position of the cover plate 300 captured to apply dot-shaped glue spots 501 at the correct position on the cover plate 300.

[0039] The dispensing head of the dispenser 22 can be set to one, or can be set to multiple as shown in Figure 3 to improve the dispensing efficiency.

[0040] Refer to Figure 3 , in this embodiment, the dispenser 22 can be controlled to apply a plurality of spaced-apart dot-shaped glue spots 501 on the upper surface of the cover plate 300 passing through the dispensing area. Among all the dot-shaped glue spots 501 applied by the dispenser 22 on the surface of the cover plate 300, the adjacent dot-shaped glue spots 501 have a certain distance so that they cannot converge before semi-curing after leveling, and each dot-shaped glue block 502 after semi-curing is an independent patch.

[0041] The pre-curing device 23 is a device that cures the liquid optical glue. It can be controlled to act on the liquid optical glue for a certain period of time, so that the liquid optical glue can be transformed into a semi-solid state, making its final fluidity worse but still having a certain fluidity.

[0042] The pre-curing device 23 can cure all the dot-shaped glue spots 501 on the cover plate 300 passing through the pre-curing area, so that the liquid dot-shaped glue spots 501 with strong fluidity are finally transformed into semi-solid dot-shaped glue blocks 502 with poor fluidity.

[0043] In this embodiment, the pre-curing device 23 may specifically be a light-curing device. Correspondingly, the material of the dot-shaped glue spot 501 is a light-curing optical glue, such as a UV-curing optical glue. The pre-curing device 23 can irradiate the dot-shaped glue spot 501 with corresponding light for a certain period of time to crosslink a part of its interior and semi-cure it into a dot-shaped glue block 502.

[0044] As an alternative, the pre-curing device 23 may specifically also be a heat-curing device. Correspondingly, the material of the dot-shaped glue spot 501 is a heat-curing optical glue that is sensitive to temperature. The pre-curing device 23 can heat the surrounding environment of the cover plate 300 to heat the dot-shaped glue spot 501 for a certain period of time, so that the dot-shaped glue spot 501 can be semi-cured into a dot-shaped glue block 502.

[0045] Reference Figure 10 , the glue outlet of the glue applicator 24 is a strip-shaped opening with a relatively large opening size, and its opening presents a slit, which can output a liquid optical glue strip. When the cover plate 300 passes through the glue application area on the conveyor line 21, the glue applicator 24 can be controlled to continuously apply a liquid optical glue strip to the upper surface of the cover plate 300 in a certain direction (such as the transverse direction) to cover a certain area of the cover plate 300 to obtain a layered liquid glue layer 503. At the same time, after the liquid glue layer 503 levels off, it can cover at least part of the area of the dot-shaped glue block 502 to connect with at least part of the dot-shaped glue block 502.

[0046] The glue applicator 24 may specifically adopt a vision optical glue applicator, which can adaptively adjust the position of the glue outlet according to the position of the cover plate 300 captured to apply the optical glue strip at the correct position on the cover plate 300.

[0047] As an alternative, in some embodiments, the glue applicator 24 is composed of a plurality of dot-shaped dispensing heads with dot-shaped glue outlets, so that all the dot-shaped glue outlets of the glue applicator 24 are closely arranged in one direction, so that the ejected glue liquid can form a generally strip-shaped glue strip or quickly level off and converge with each other after reaching the surface of the cover plate 300.

[0048] As Figure 15 shown, during production, the cover plate 300 moves along the conveyor line 21. The dispenser 22 of the dispensing device 20 first dispenses glue on the cover plate 300 to form dot-shaped glue spots 501 on the surface of the cover plate 300. Then, when the cover plate 300 passes through the pre-curing device 23, the pre-curing device 23 pre-cures the dot-shaped glue spots 501 to transform the dot-shaped glue spots 501 into dot-shaped glue blocks 502. Then, when the cover plate 300 passes through the glue applicator 24, the glue applicator 24 performs a glue application operation on the cover plate 300 to coat a liquid glue layer 503 on the cover plate 300. Then, the liquid glue layer 503 levels off to a larger area on the surface of the cover plate 300 under the action of the dot-shaped glue blocks 502.

[0049] In this embodiment, the dispensing device 20 sequentially arranges a dispenser 22, a pre-curing device, and a coating machine 24 along the conveying line 21 from upstream to downstream, so that the dispensing device 20 can perform multi-point dispensing, pre-curing, and coating operations on the cover plate 300 conveyed on the conveying line 21 in sequence. In this way, the liquid dot-shaped glue spots 501 can be semi-cured by the pre-curing device for a certain period of time, so that the liquid dot-shaped glue spots 501 are finally transformed into semi-cured dot-shaped glue blocks 502. In this way, while improving the viscosity of the dot-shaped glue blocks 502 compared with the dot-shaped glue spots 501, the dot-shaped glue blocks 502 still retain a certain fluidity, so that the fluidity and positioning ability of the dot-shaped glue blocks 502 can be well balanced.

[0050] In this way, the dot-shaped glue blocks 502 will be equivalent to columns blocking the flow of the glue liquid, which can limit the flow ability of the liquid glue layer 503 on the upper surface of the cover plate 300 when passing through the dot-shaped glue blocks 502, so as to play a certain role in restricting and positioning the liquid glue layer 503, so that the liquid glue layer 503 obtained by pre-curing is not easily overflowed from the bonding area due to gravity or pressure when flipped or pressed. This ensures that during the subsequent flipping of the cover plate 300 and the mounting process with the functional chip 200, the liquid glue layer 503 will not flow uncontrollably outward or to one side, effectively controlling the flow direction and degree of the glue liquid during mounting, effectively preventing glue overflow, avoiding local virtual connection, reducing the skew and offset of the cover plate 300, and promoting the filling of the liquid glue layer 503 into the tiny gap between the cover plate 300 and the functional chip 200 to improve the mounting quality.

[0051] In addition, since the dot-shaped glue blocks 502 are not fully cured and the viscosity of the dot-shaped glue blocks 502 is greater than that of the dot-shaped glue spots 501, during the mounting process of the cover plate 300 and the functional chip 200, the relative positions of the cover plate 300 and the functional chip 200 can be better fixed by the dot-shaped glue blocks 502, reducing the degree of misalignment caused by movement during mounting. At the same time, sufficient support can also be provided for the cover plate 300, improving the degree of skew caused by uneven pressure distribution, and thus avoiding excessive flow of the liquid glue layer 503 to a certain place resulting in glue overflow. Since the semi-cured dot-shaped glue blocks 502 still have a certain fluidity, during the mounting process of the cover plate 300 and the functional chip 200, they can flow under the extrusion force to fill the gaps around and into the tiny gaps to improve the mounting quality.

[0052] According to some optional embodiments, as Figure 2 、 Figure 4 、 Figure 6 、 Figure 8 and Figure 10 shown, the dispenser 22 includes a first three-axis slide 221 mounted on the mounting platform and a dot-shaped dispensing head 222 mounted on the output end of the first three-axis slide 221. The dot-shaped dispensing head 222 is provided as one or two or three arranged side by side.

[0053] In some embodiments, the dispenser 22 can apply a plurality of dot-shaped glue spots 501 arranged in sequence along the perimeter of the cover plate 300 on the upper surface of the cover plate 300 to form a dot-shaped enclosure near the edge on the upper surface of the cover plate 300.

[0054] In some embodiments, in addition to forming a dot-shaped enclosure near the edge on the upper surface of the cover plate 300, the dispenser 22 can also form some dot-shaped glue spots 501 inside the enclosure.

[0055] According to some alternative embodiments, as Figure 2 、 Figure 4 、 Figure 6 、 Figure 8 and Figure 10 shown, the glue applicator 24 includes a second three-axis slide 241 installed on the installation platform and a glue dispensing head installed at the output end of the second three-axis slide 241. Among them, the glue dispensing head can be a strip-shaped glue dispensing head 242. Of course, the glue dispensing head can also be composed of a plurality of glue dispensing heads with dot-shaped glue outlets arranged side by side.

[0056] According to some alternative embodiments, as Figures 2 - 5 shown, in addition to the dispensing device 20, the side coating device 100 for touch screen processing is also provided with a first stock preparation table 10 and a loading mechanism 30 installed on the installation platform.

[0057] The first stock preparation table 10 provides a top surface for placing the cover plate 300. Horizontally, the first stock preparation table 10 is located on the side of the conveyor line 21 and corresponds to the loading area set on the conveyor line 21. Preferably, the loading area of the conveyor line 21 coincides with the dispensing area, so that the conveyor line 21 can be more compact.

[0058] The loading mechanism 30 includes a first loading arm 31 and a transverse movement device 32 fixedly connected to each other. The first loading arm 31 is generally a strip-shaped rod extending longitudinally, and is movably arranged on the top surface of the first stock preparation table 10 so that it can move smoothly on the top surface of the first stock preparation table 10.

[0059] The transverse movement device 32 can be a cylinder, an electric cylinder or an electric screw slide, etc. The output end of the transverse movement device 32 is fixedly connected to the first loading arm 31 through a connecting rod. The transverse movement device 32 is electrically connected to the control cabinet and can be controlled to drive the first loading arm 31 to reciprocate horizontally, so that the first loading arm 31 can push the cover plate 300 located on the top surface of the first stock preparation table 10 to the loading area of the corresponding side of the conveyor line 21.

[0060] In some embodiments, there are two sets of dispensing devices 20, as Figure 2 、 Figure 4 and Figure 14As shown, a set of dispensing devices 20 are provided on each of the opposite sides in the transverse direction of the first stock preparation table 10. In this case, driven by the transverse movement device 32, the first loading arm 31 can reciprocate in the transverse direction to push the cover plate 300 towards both sides in the transverse direction in batches to the loading areas on the corresponding sides, realizing two-way loading in the transverse direction. Therefore, in this embodiment, both the forward and return processes of the first loading arm 31 are utilized, and two loading operations can be completed in one reciprocating stroke, which can reduce system waiting to improve the loading efficiency of the side coating device 100 for touch screen processing and the subsequent coating efficiency.

[0061] According to some optional embodiments, such as Figure 2 、 Figure 4 and Figure 14 As shown, a set of dispensing devices 20 are provided on each of the opposite sides in the transverse direction of the first stock preparation table 10, and the conveying line 21 of the dispensing device 20 is longitudinally arranged, which can make the structural layout of the side coating device 100 for touch screen processing more compact.

[0062] According to some optional embodiments, such as Figure 2 、 Figure 3 、 Figure 6 、 Figure 10 and Figure 14 As shown, the loading mechanism 30 is provided with a first hopper 33. The first hopper 33 has a receiving cavity for stacking the cover plate 300 in a stacked manner. A material discharge opening is provided at the top of the first hopper 33, and a discharge opening is provided at the bottom. The first hopper 33 is integrally arranged above the first stock preparation table 10, and the discharge opening is directly opposite the middle position of the top surface of the first stock preparation table 10. A first gap 331 for discharging materials is formed between the discharge opening provided at the bottom of the first hopper 33 and the top surface of the first stock preparation table 10, so that the first loading arm 31 can smoothly pass through the first gap 331 during the transverse movement process and push one cover plate 300 supported on the top surface of the first stock preparation table 10 at a time to move and finally transfer it to the loading area of the corresponding conveying line 21.

[0063] In this embodiment, the first hopper 33 above the first stock preparation table 10 can continuously provide the cover plate 300 to the first stock preparation table 10 in a timely manner, ensuring the continuity and stability of the loading process.

[0064] According to some optional embodiments, such as Figure 2 、 Figure 4 、 Figure 5 、 Figure 10 and Figure 11 As shown, the dispensing device 20 is provided with a tail-end tray 25 at the end of the conveying line 21. The end of the conveying line 21 is located at the end position in its conveying direction. The tail-end tray 25 is used to receive the cover plate 300 output from the conveying line 21 and support the cover plate 300 on its top surface waiting to be taken and mounted on the functional sheet 200 to form the touch screen 400.

[0065] In order to enable the cover plate 300 to be held in the correct position, a positioning groove 251 for positioning the cover plate 300 is provided on the top surface of the tail-end tray 25. The positioning groove 251 includes two longitudinally arranged longitudinal bars 252 and a transverse bar 253. The two longitudinal bars 252 are arranged in parallel in the transverse direction and are connected to the end of the conveying line 21 for receiving the cover plate 300 and restricting the transverse position of the cover plate 300. The transverse bar 253 is located at the end of the longitudinal bar 252 for restricting the longitudinal position of the cover plate 300.

[0066] In some embodiments, such as Figure 2 and Figure 5 shown, the positioning groove 251 is provided with a negative pressure suction port 254 on the transverse bar 253. The negative pressure suction port 254 is communicated with an air passage extending in the transverse bar 253 and is communicated with a trachea joint installed on the transverse bar 253. The negative pressure suction port 254 is specifically arranged on the inner groove wall of the transverse bar 253 facing the conveying line 21, that is, the end groove wall of the positioning groove 251 along the conveying direction of the conveying line 21. When the cover plate 300 enters the positioning groove 251 and is at a certain distance from the transverse bar 253, the negative pressure attraction provided by the negative pressure suction port 254 can apply a continuous lateral negative pressure attraction to the side of the cover plate 300 to adsorb the cover plate 300 to the transverse bar 253 to be in the correct position, facilitating the subsequent operation process.

[0067] In some embodiments, the tail-end tray 25 is arranged to be inclined downward along the conveying direction of the conveying line 21, so that the cover plate 300 can further slide by gravity to the correct position in the positioning groove 251 after coming out of the conveyor belt or can be conveniently attracted by the negative pressure suction port 254.

[0068] According to some alternative embodiments, such as Figure 2 , Figure 4 , Figure 5 , Figure 10 and Figure 11 shown, the side coating device 100 for touch screen processing is further provided with a flipping mechanism 40 installed on the installation platform. The flipping mechanism 40 is connected to the tail-end tray 25 to adsorb and flip the cover plate 300 on the tail-end tray 25 and transfer it to the mounting platform to be mounted with the functional chip 200 to obtain the touch screen 400.

[0069] An opening 255 is provided in the middle of the tail-end tray 25. The opening 255 penetrates longitudinally along the tail-end tray 25 to divide the tail-end tray 25 into two parts in the transverse direction. In some embodiments, the opening 255 also divides the transverse bar 253 into two segments in the transverse direction.

[0070] The flipping mechanism 40 includes a flap 41, a flipping motor 42, and a plurality of negative pressure suction cups 43. The flap 41 is connected to the output shaft of the flipping motor 42. All the negative pressure suction cups 43 are arranged in an array on the flap 41. When the flap 41 is in the state of waiting to adsorb, the flap 41 is located below the tail-end tray 25. At the same time, the negative pressure suction cups 43 are also located below the tail-end tray 25 and are arranged upward. The flap 41 and all the negative pressure suction cups 43 are correspondingly arranged with respect to the opening 255, so that the flipping motor 42 can drive the flap 41 and the negative pressure suction cups 43 to flip upward or downward through the opening 255.

[0071] In this embodiment, the flap 41 and the negative pressure suction cups 43 are located below the tail-end tray 25 and can be flipped upward to pass through the opening 255 provided in the middle of the tail-end tray 25. Therefore, it only takes one step to flip the coated cover plate 300 to the other side and transfer it to the next working station, and the connection efficiency with the mounting station is relatively high.

[0072] According to some alternative embodiments, as Figure 2 、 Figures 4 - 11 shown, the side coating device 100 for touch screen processing is further provided with a second stock preparation table 50 and a mounting platform 60.

[0073] The second stock preparation table 50 provides a top surface for placing the functional sheet 200.

[0074] The mounting platform 60 also provides a top surface for placing the functional sheet 200. Exemplarily, as Figure 5 、 Figure 8 and Figure 9 shown, the mounting platform 60 includes a support 61 mounted on the mounting platform and a jig 62 mounted on the top of the support 61. A groove 621 for positioning the functional sheet 200 is provided on the top surface of the jig 62. A notch 622 is provided on one side of the groove 621 facing the second stock preparation table 50, and the notch 622 allows the touch screen 400 to move laterally out of the groove 621 for unloading. A plurality of bottom negative pressure suction ports 623 are provided at the bottom of the groove 621 of the jig 62 to adsorb the functional sheet 200 before unloading. Lateral negative pressure suction ports 624 can also be provided on the side of the groove 621 of the jig 62 to attract the functional sheet 200 to make it in the correct position.

[0075] The mounting platform 60 is connected to the flipping mechanism 40 for receiving the cover plate 300 through the jig 62.

[0076] In some embodiments, as Figure 2 、 Figure 4 、 Figure 5 、 Figure 8 and Figure 9As shown, the loading mechanism 30 further includes a second loading arm 34 connected to the transverse movement device 32. The second loading arm 34 is fixedly connected to the first loading arm 31 and is movably disposed on the top surface of the second stock preparation table 50. The second loading arm 34 is generally a strip-shaped rod extending longitudinally, and its movable arrangement on the top surface of the second stock preparation table 50 enables it to move smoothly on the top surface of the second stock preparation table 50.

[0077] The groove depth of the groove 621 is less than the thickness of the touch screen 400. The transverse movement device 32 is used to drive the first loading arm 31 and at the same time drive the second loading arm 34 to reciprocate laterally to push the functional chip 200 located on the top surface of the second stock preparation table 50 to the top surface of the corresponding side mounting platform 60, such as into the groove 621 provided on the top surface of the jig 62.

[0078] In some embodiments, such as Figure 8 and Figure 10 As shown, when a set of dispensing devices 20 are provided on each of the two lateral sides of the first stock preparation table 10, a mounting platform 60 corresponding to and connected to the flipping mechanism 40 is provided on each of the two lateral sides of the second stock preparation table 50.

[0079] In this embodiment, the second loading arm 34 is fixedly connected to the first loading arm 31, realizing the synchronous loading of the cover plate 300 and the functional chip 200.

[0080] According to some alternative embodiments, such as Figures 8 - 13 As shown, the loading mechanism 30 is further provided with a second hopper 35 connected to the mounting platform. The second hopper 35 has a receiving cavity for stacking the functional chips 200. The top of the second hopper 35 is provided with a feeding port and the bottom is provided with a discharging port. The second hopper 35 is integrally disposed above the second stock preparation table 50, and the discharging port is directly opposite to the middle position of the top surface of the second stock preparation table 50. A second gap 351 for discharging is formed between the discharging port provided at the bottom of the second hopper 35 and the top surface of the second stock preparation table 50, so that the second loading arm 34 can smoothly pass through the second gap 351 during the lateral movement and push the functional chip 200 supported on the top surface of the second stock preparation table 50 to move and finally transfer it to the top surface of the corresponding side mounting platform 60.

[0081] In this embodiment, the second hopper 35 above the second stock preparation table 50 can continuously and timely supply the functional chips 200 to the second stock preparation table 50, ensuring the continuity and stability of the loading process.

[0082] According to some alternative embodiments, such as Figure 4 、 Figure 5 、 Figures 8 - 11As shown, the side coating equipment 100 for processing a touch screen is provided with a discharge arm 81 on the top surface of the mounting platform 60, and the discharge arm 81 is fixedly connected to the first loading arm 31 and the second loading arm 34 through a connecting rod, so as to be able to synchronously reciprocate laterally under the drive of the transverse moving device 32. During the transverse movement of the discharge arm 81, the touch screen 400 that has been mounted on the top surface of the mounting platform 60 can be pushed away from the top surface of the mounting platform 60 to complete the discharge.

[0083] In some embodiments, when a set of dispensing equipment 20 is provided on both sides of the first preparation table 10 in the horizontal direction, a mounting platform 60 is also provided on both sides of the second preparation table 50 in the horizontal direction. While the first loading arm 31 and the second loading arm 34 perform bidirectional loading in the horizontal direction, the two unloading arms 81 can also respectively complete a single-sided unloading of the touch screen 400.

[0084] In the present embodiment, since the first loading arm 31, the second loading arm 34 and the unloading arm 81 can synchronously reciprocate laterally, each time the first loading arm 31 and the second loading arm 34 complete a loading action, the unloading arm 81 can synchronously complete a unloading action on the touch screen 400, that is, the loading action and the unloading action are performed synchronously, and one reciprocating stroke can complete two loading actions and two unloading actions, which can improve the production utilization rate of touch screen mounting.

[0085] According to some optional embodiments, Figures 10 - 12 As shown, the mounting platform 60 is disposed as a whole below the second material preparation platform 50, so that there is a height difference between the mounting platform 60 and the second material preparation platform 50. In this way, the touch screen 400 can be unloaded by relying on the gap formed by the height difference between the mounting platform 60 and the second material preparation platform 50. Compared with the case where only the horizontal distance between the mounting platform 60 and the second material preparation platform 50 is used as the unloading gap, the mounting platform 60 and the second material preparation platform 50 can be arranged more compactly on the horizontal line.

[0086] According to some optional embodiments, in order to improve the lamination quality of the touch screen 400, as Figures 4 - 7 , Figure 10 and Figure 11 As shown, a roller assembly 70 connected to the mounting platform is suspended above the mounting platform 60, and the roller assembly 70 is located on the unloading side of the mounting platform 60. The roller assembly 70 includes a wheel frame 71 and a roller 72 connected to the wheel frame 71, and the rotating shaft of the roller 72 is arranged horizontally and longitudinally. The wheel frame 71 is connected to the mounting platform or to the second material preparation platform 50.

[0087] The pressing roller 72 is entirely located above the corresponding side of the mounting platform 60, and a third gap 76 is formed between the pressing roller 72 and the top of the corresponding side of the mounting platform 60. The height dimension of the third gap 76 is smaller than the thickness of the touch screen 400, but the third gap 76 allows the touch screen 400 to pass through, so that the pressing roller 72 can roll down on the top surface of the touch screen 400. When the touch screen 400 passes through the third gap 76, the cover plate 300 that makes up the touch screen 400 will contact the pressing roller 72, and the cover plate 300 will be slightly pressed towards the functional sheet 200 to flatten the optical adhesive layer between the cover plate 300 and the functional sheet 200, enabling the cover plate 300 to fit more evenly with the functional sheet 200.

[0088] The surface of the pressing roller 72 can be rubber, allowing for a certain amount of surface deformation when rolling the touch screen 400.

[0089] In this embodiment, a pressing roller assembly 70 is provided above the mounting platform 60, such that the touch screen 400 needs to pass under the pressing roller 72 during the blanking process to complete the blanking. In this way, when the blanking arm 81 pushes the touch screen 400 during the blanking process, the pressing roller 72 can roll the touch screen 400 to synchronously improve the bonding quality between the functional sheet 200 and the cover plate 300 when the blanking is completed. Among them, during the process of the pressing roller 72 rolling the touch screen 400, the dot-shaped adhesive block 502 can provide a certain supporting effect to the cover plate 300, maintaining the inclination degree of the cover plate 300, so that the inner liquid adhesive layer 503 can flow evenly around.

[0090] In some embodiments, such as Figure 5 、 Figure 7 、 Figure 11 and Figure 13 shown, the pressing roller assembly 70 adopts a one-way rotation form. Specifically, a ratchet wheel 73 is installed at the shaft end of the pressing roller 72, and a ratchet pawl 74 that cooperates with the ratchet wheel is installed on one side of the wheel frame 71, so that the pressing roller 72 and the wheel frame 71 are connected through a ratchet mechanism to have the ability of one-way rotation.

[0091] The one-way rotation direction of the pressing roller 72 is as follows: during the process of the blanking arm 81 blanking the touch screen 400, the pressing roller 72 can contact the top surface of the touch screen 400 and rotate.

[0092] In this embodiment, if the touch screen 400 does not completely disengage from the corresponding blanking arm 81 and returns with the blanking arm 81, the pressing roller 72 will stop rotating and push the touch screen 400, prompting the touch screen 400 to disengage from the blanking arm 81 and complete the blanking smoothly.

[0093] In some embodiments, such as Figure 7 、 Figure 9 and Figure 13As shown, a buffer spring 75 is provided between the wheel carrier 71 and the connected components. The buffer spring 75 can provide a downward pressure for the pressure roller 72, enabling the pressure roller 72 to improve the fitting property with the cover plate 300 of the touch screen 400.

[0094] In some embodiments, as Figures 5 - 13 shown, when the pressure roller assembly 70 adopts a one-way rotation form, the fixture 62 of the mounting platform 60 is particularly changed to be movably arranged on the support 61. At the same time, the fixture 62 is fixedly connected to the blanking arm 81, so that the fixture 62 can move horizontally synchronously with the blanking arm 81. In this way, during the blanking process, the fixture 62 can always provide bottom support for the touch screen 400, which can improve the rolling quality of the pressure roller 72 on the touch screen 400, and further improve the fitting quality.

[0095] As Figure 9 shown, an air channel groove is provided in the blanking arm 81 and the fixture 62. After they are aligned, an air channel is jointly formed between them. The air channel and their alignment part jointly constitute a lateral negative pressure suction port 624 for sucking the functional sheet 200 to make it in the correct position.

[0096] According to some alternative embodiments, as Figures 4 - 13 shown, the side coating device 100 for touch screen processing is provided with a longitudinally arranged output conveyor belt 90 directly below the second stock preparation table 50. The opposite sides in the transverse direction of the output conveyor belt 90 are connected to the blanking sides of the corresponding mounting platforms 60 for receiving the touch screen 400 blanked from the mounting platform 60.

[0097] According to some alternative embodiments, the side coating device 100 for touch screen processing is further provided with a curing device. The curing device is arranged at the downstream position of the mounting platform 60 and at the output conveyor belt 90 for completely curing the dot-shaped glue block 502 and the liquid glue layer 503 of the touch screen 400.

[0098] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0099] In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed. It may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0100] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A side coating device for touch screen processing, characterized in that: Comprising: A dispensing device (20), which includes a conveying line (21) and a dispenser (22), a pre-curing device (23), and a coating machine (24) arranged in sequence along the conveying direction of the conveying line (21); The conveying line (21) is used to receive and convey a cover plate (300) along its conveying direction; The dispenser (22) is arranged corresponding to the dispensing area of the conveying line (21) to apply a plurality of spaced-apart liquid dot-shaped glue spots (501) to the upper surface of the cover plate (300) passing through the dispensing area; The pre-curing device (23) is arranged corresponding to the pre-curing area of the conveying line (21) to convert all the dot-shaped glue spots (501) on the cover plate (300) passing through the pre-curing area into semi-solid dot-shaped glue blocks (502); The coating machine (24) is arranged corresponding to the coating area of the conveying line (21) to apply a layer of liquid glue layer (503) connected to at least part of the dot-shaped glue blocks (502) to the upper surface of the cover plate (300) passing through the coating area.

2. The side coating device for touch screen processing according to claim 1, wherein: The side coating device (100) for touch screen processing further includes a first stock preparation table (10) and a loading mechanism (30). The top surface of the first stock preparation table (10) is used to place the cover plate (300), and the first stock preparation table (10) is located on the side of the dispensing area of the conveying line (21); The loading mechanism (30) includes a connected first loading arm (31) and a transverse movement device (32). The first loading arm (31) is movably arranged on the top surface of the first stock preparation table (10), and the transverse movement device (32) is used to drive the first loading arm (31) to reciprocate horizontally to push the cover plate (300) located on the top surface of the first stock preparation table (10) to the dispensing area of the corresponding side of the conveying line (21).

3. The side coating device for touch screen processing according to claim 2, characterized in that: One set of the dispensing device (20) is arranged on each of the opposite sides in the horizontal direction of the first stock preparation table (10); And / or, the conveying line (21) is longitudinally arranged; And / or, the loading mechanism (30) includes a first hopper (33) arranged above the first stock preparation table (10). The bottom of the first hopper (33) is provided with a discharge port and forms a first gap (331) for discharging material with the top surface of the first stock preparation table (10).

4. The side coating device for touch screen processing according to claim 2, wherein: The dispensing device (20) further includes a tail-end tray (25) arranged at the end in the conveying direction of the conveying line (21) for receiving the cover plate (300) output by the conveying line (21). The top surface of the tail-end tray (25) is provided with a positioning groove (251) for positioning the cover plate (300).

5. The side coating device for touch screen processing according to claim 4, wherein: The end wall of the positioning groove (251) in the conveying direction of the conveying line (21) is provided with a negative pressure suction port (254) for adsorbing the side of the cover plate (300); And / or, the tail-end tray (25) is arranged to be inclined downward along the conveying direction of the conveying line (21).

6. The side coating device for touch screen processing according to claim 4 or 5, characterized in that: It further includes a turnover mechanism (40) connected to the tail-end tray (25). The turnover mechanism (40) includes a flap (41), a turnover motor (42) connecting the flap (41), and negative pressure suction cups (43) arranged in an array on the flap (41). The flap (41) and the negative pressure suction cups (43) are located below the tail-end tray (25), and the negative pressure suction cups (43) face upward corresponding to an opening (255) provided in the middle of the tail-end tray (25). Wherein, the turnover motor (42) can drive the flap (41) and the negative pressure suction cups (43) to move upward through the opening (255).

7. The side coating device for touch screen processing according to claim 6, characterized in that: It further includes a second stock preparation table (50) and a mounting platform (60). The top surfaces of the second stock preparation table (50) and the mounting platform (60) are both used for placing functional chips (200). The mounting platform (60) is connected to the turnover mechanism (40) for receiving the cover plate (300). The loading mechanism (30) further includes a second loading arm (34) connected to the transverse movement device (32). The second loading arm (34) is fixedly connected to the first loading arm (31) and movably arranged on the top surface of the second stock preparation table (50). The transverse movement device (32) is used to drive the second loading arm (34) to reciprocate horizontally to push the functional chips (200) located on the top surface of the second stock preparation table (50) to the top surface of the corresponding side mounting platform (60).

8. A side coating device for touch screen processing according to claim 7, characterized in that: The loading mechanism (30) includes a second hopper (35) arranged above the second stock preparation table (50). The bottom of the second hopper (35) is provided with a discharge port and forms a second gap (351) for discharging materials with the top surface of the second stock preparation table (50).

9. The side coating device for touch screen processing according to claim 1, wherein: The pre-curing device (23) is set as a light-curing device for semi-curing the dot-shaped glue spots (501) into the dot-shaped glue blocks (502) by irradiating light, or is set as a heat-curing device for semi-curing the dot-shaped glue spots (501) into the dot-shaped glue blocks (502) by heating.

10. A side coating device for touch screen processing according to claim 1, characterized in that: The dotting machine (22) includes a first three-axis slide (221) and a dot-shaped dispensing head (222) installed at the output end of the first three-axis slide (221). The glue coating machine (24) includes a second three-axis slide (241) and a strip-shaped dispensing head (242) installed at the output end of the second three-axis slide (241) or a plurality of dispensing heads with dot-shaped glue outlets arranged side by side.

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