Integrated coating tool bit structure

Abstract

The utility model discloses an integrated coating tool bit structure. The integrated coating tool bit structure comprises an upper lip body, a gasket and a lower lip body which are sequentially connected in sequence, two glue outlets are formed in the two ends of the upper lip body, and a glue inlet is further formed between the two glue outlets. A gap is formed in the gasket; a coating gap is formed among the upper lip body, the lower lip body and the notch; a flowing channel is formed in one side, corresponding to the gasket, of the lower lip body, and the flowing channel is positioned in the coating gap; overflow grooves vertically corresponding to the glue outlets are formed in the two ends of the flowing channel; and a glue inlet groove corresponding to the glue inlet is also formed in the flowing channel. According to the utility model, liquid-state photo-sensitive glue enters the glue inlet groove in the lower lip body from the glue inlet and then uniformly flows into the left side and the right side of the coating gap from the two sides of the flow channel, so that the internal space of the tool bit is greatly reduced, the discharge of bubbles is facilitated, the liquid-state photo-sensitive glue flowing out of the coating gap is free of bubbles, and the product yield is high; and the lower lip body is integrally designed, so that the dismounting and mounting processes are reduced, and the service life of the coating tool bit is prolonged.

Description

Technical Field

[0001] The utility model relates to a coating cutter head structure, in particular to an integrated coating cutter head structure. Background Art

[0002] Metal Mesh is a conductive material that forms extremely fine metal grid lines on a PET substrate through a roll-to-roll lithography process. The grid line width is generally less than 5μm and is basically invisible to the naked eye. The metal grid lines on the surface of the Metal Mesh material replace the ITO on the surface of the ITO material, and the conductive effect is far better than traditional ITO. The extremely fine grid line width requires that the lithography process is particularly important for the selection of protective glue. Factors such as resolution, viscosity, chemical properties and photosensitivity determine whether the process and process are stable and industrial mass production. Liquid photosensitive glue materials with excellent performance in all the above can meet the needs of mass production of the process, but liquid photosensitive glue is difficult to coat on the surface of the raw material or cannot meet the needs of industrial mass production due to bubble problems during the coating process.

[0003] The conventional coating operation method is: under a certain pressure, the liquid photosensitive adhesive is pressed out along the gap of the coating knife and transferred to the surface of the moving substrate. The coating knife consists of an upper lip, a shim sheet, and a lower lip. The upper lip, shim sheet, and lower lip are fixed together by screws. The upper / lower lips are mirror-finished, and the shim sheets are tightly fitted together to form a gap at the concave notch. The photosensitive adhesive comes out of the gap and is evenly coated on the surface of the material.

[0004] However, the existing glue inlet and glue outlet are respectively arranged on both sides of the lower lip, and the liquid photoresist flows into the glue outlet from left to right in sequence, and then flows out of the glue outlet as liquid photosensitive glue for coating. In the process from glue inlet to glue outlet, since the glue inlet and glue outlet are large and filled with liquid photosensitive glue, the internal air cannot be completely and effectively discharged under the action of pressure, resulting in the bubbles in the cutter head and the photosensitive glue being coated on the material surface together during the coating operation, and there is no photosensitive glue to protect the bubbles, causing the circuit or grid of the material to be disconnected after etching, resulting in abnormal product functional yield.

[0005] In addition, the accessories of the glue inlet and the glue outlet in the lower lip are separate, and are prone to wear and other uncontrollable factors during multiple installation and removal processes, resulting in frequent damage to the accessories, thereby failing to meet actual usage requirements. Utility Model Content

[0006] The utility model aims to overcome the deficiencies of the prior art and to provide an integrated coating knife head structure, which has no bubbles when coating liquid photosensitive adhesive and has a long service life.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an integrated coating blade structure, comprising an upper lip body, a gasket and a lower lip body which are sequentially connected;

[0008] Two through-set glue outlets are formed at both ends of the upper lip body, and a through-set glue inlet is also formed between the two glue outlets;

[0009] The gasket is provided with a notch; wherein a coating gap for glue discharge is formed between the upper lip, the lower lip and the notch;

[0010] A flow channel is provided on one side of the lower lip body corresponding to the gasket, and the flow channel is located in the coating gap; overflow grooves are provided at both ends of the flow channel, and the overflow grooves are provided corresponding to the glue outlet up and down; a glue inlet groove corresponding to the glue inlet is also provided on the flow channel;

[0011] Among them, when the liquid photosensitive glue enters the glue inlet groove through the glue inlet, the liquid photosensitive glue flows out from both ends of the flow channel evenly into the overflow groove, and then flows out from the glue outlet to exhaust the air. Finally, the liquid photosensitive glue flows out from the coating gap evenly without bubbles.

[0012] Furthermore, the notch is in a U shape; and the flow channel is arranged transversely along one side of the notch.

[0013] Furthermore, the glue inlet is located in the middle of the two glue outlets.

[0014] Furthermore, a one-way valve is provided at the glue outlet.

[0015] Furthermore, the gasket is made of steel or PET.

[0016] Furthermore, the diameters of the glue outlet and the glue inlet are 4 to 6 mm.

[0017] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0018] The utility model discloses an integrated coating knife structure, in which liquid photosensitive adhesive enters into the adhesive feeding groove in the middle of the lower lip body from the adhesive feeding port, and then flows evenly into the left and right sides of the effective area of ​​the coating gap from both sides of the flow channel, thereby greatly reducing the internal space of the knife head and being more conducive to the discharge of bubbles. Finally, the liquid photosensitive adhesive flowing out of the coating gap is free of bubbles, and the product yield is high.

[0019] Secondly, the glue inlet and glue outlet are arranged on the upper lip body, and only the corresponding glue inlet groove and overflow groove need to be arranged on the lower lip body. In this way, the lower lip body is an integrated design, and there is no need to assemble separate glue inlet and glue outlet accessories, which reduces frequent friction and extrusion during unloading and installation, prevents wear of the coating knife head, and extends the service life of the coating knife head. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0022] Figure 2 This is a three-dimensional exploded schematic diagram of an embodiment of the utility model;

[0023] Figure 3 A top view of a gasket in one embodiment of the utility model;

[0024] Figure 4 This is a top view of an embodiment of the utility model without the upper lip;

[0025] Among them: an upper lip body 1, a gasket 2, a lower lip body 3, a glue outlet 10, a glue inlet 11, a notch 20, a flow channel 30, an overflow groove 311, and a glue inlet groove 312. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] The utility model provides an integrated coating knife head structure to solve the problem in the prior art that during the operation of the coating knife, bubbles and photosensitive adhesive in the knife head are coated on the surface of the material together, and there is no photosensitive adhesive to protect the bubbles, causing the circuit or grid of the material to be disconnected after etching, resulting in abnormal product function yield.

[0028] For ease of understanding, the specific process in the embodiments of the present application is described below. Figures 1 to 4An integrated coating blade structure in the embodiment of the present application includes an upper lip body 1, a gasket 2 and a lower lip body 3 which are sequentially connected; two through-set glue outlets 10 are provided at both ends of the upper lip body 1, and a through-set glue inlet 11 is also provided between the two glue outlets 10; a notch 20 is provided on the gasket 2, wherein a coating gap for glue discharge is formed between the upper lip body 1, the lower lip body 3 and the notch 20.

[0029] A transversely distributed flow channel 30 is provided on one side of the lower lip 3 corresponding to the gasket 2, and the flow channel 30 is located in the coating gap; overflow grooves 311 are opened at both ends of the flow channel 30, and the overflow grooves 311 are arranged corresponding to the glue outlet 10 above and below; the flow channel 30 is also provided with a glue inlet groove 312 corresponding to the glue inlet 11.

[0030] In the integrated coating knife head structure of the utility model, the liquid photosensitive adhesive enters the adhesive inlet groove 312 in the flow channel 30 through the adhesive inlet port 11, and then the liquid photosensitive adhesive flows evenly from both ends of the flow channel 30 to the overflow grooves 311 on both sides, and then flows out from the adhesive outlet port 10 to exhaust the internal air, and finally the liquid photosensitive adhesive flows out from the coating gap evenly and without bubbles, thereby improving the product yield and meeting actual usage needs.

[0031] based on Figure 2 and Figure 3 In this embodiment, the notch 20 is in a U shape, so that the gasket 2 can be concave as a whole, and the liquid photosensitive adhesive can flow out evenly along the notch 20, and the glue discharge effect of the coating gap is good.

[0032] In addition, based on Figure 4 In the present embodiment, one side of the flow channel 30 is exactly adjacent to the lateral side of the inner recess of the notch 20, so that the flow channel 30 can communicate with the coating gap. In this way, the liquid photosensitive adhesive first enters the glue inlet groove 312 in the flow channel 30 from the glue inlet 10, and then flows evenly from both ends of the flow channel 30 to the overflow groove 311, and finally flows out evenly as a whole from the coating gap.

[0033] Further, based on Figure 1 and Figure 4 The glue inlet 11 is located in the middle of the two glue outlets 10, so that the liquid photosensitive glue can flow evenly from the left and right sides of the flow channel 30 to the overflow grooves 311 on both sides, that is, located on the left and right sides of the effective area of ​​the coating gap. The internal air is exhausted in two directions respectively, and the glue outlet path is half the length of the effective coating blade, so that the air can be exhausted quickly and effectively, thereby making the liquid photosensitive glue flowing out of the coating gap free of bubbles, and the product yield is guaranteed.

[0034] The glue inlet 11 is optimally designed to be located in the middle of the two glue outlets 10, but bubbles can also be exhausted at other positions, but the efficiency is not as high as that at the middle position. The glue inlets 11 at other positions also fall within the protection range of the coating knife structure.

[0035] Furthermore, the diameters of the glue outlet 10 and the glue inlet 11 are 4 to 6 mm. The diameters of the glue outlet 10 and the glue inlet 11 in this embodiment are smaller than the conventional diameters, which can reduce the glue inlet and glue outlet diameters, thereby reducing the pressure inside the cutter head during glue pouring and reducing the probability of bubble generation. The liquid photosensitive glue flowing out of the coating gap is bubble-free, meeting actual usage requirements.

[0036] In addition, a one-way valve can be provided at the glue outlet 10 to control the opening and closing of the glue outlet 10. When filling the glue, the one-way valve at the glue outlet 10 is in an open state, so that the internal air can be discharged from the glue outlet 10 as soon as possible; after the glue filling is completed, the one-way valve at the glue outlet 10 is closed, and the glue outlet 10 can be used as an overflow port, so that the liquid photosensitive glue in the coating gap can flow out evenly.

[0037] Furthermore, the material of the gasket 2 in this embodiment is steel or PET. If steel is used, its service life is long and does not need to be replaced frequently; while the gasket made of PET is low in cost and easy to replace; wherein, the thickness of the gasket 2 is 30um, 50um, 75um, 100um, 125um, etc.

[0038] In addition, the material of the upper lip body 1 and the lower lip body 3 is SDC, which has high hardness and high wear resistance and a long service life.

[0039] The following description of the specific operation is based on the assumption that the glue inlet 11 is located in the middle of the two glue outlets 10. First, the glue filling operation is performed. The liquid photosensitive glue first enters the glue inlet groove 312 from the glue inlet 11, then flows from the left and right sides of the flow channel 30 to the overflow grooves 311 on both sides, and then is discharged from the glue outlet 10 through the overflow grooves 311. This can increase the exhaust speed of the air, stabilize the air pressure on both sides of the interior, and evenly distribute the pressure on both sides of the interior, so that bubbles can be completely discharged during the glue filling process.

[0040] After the glue filling is completed, the glue outlet is closed through a one-way valve, and the glue outlet is used as an overflow port. Then the liquid photosensitive adhesive can be coated. In this way, there will be no bubbles coated with the liquid photosensitive adhesive, and the Metal Mesh will not be broken, which meets the actual usage needs.

[0041] To sum up, the coating knife structure of the utility model feeds glue from the middle and then discharges glue from the left and right sides of the effective area of ​​the coating gap, that is, the glue outlets on both sides, which greatly reduces the internal space of the knife head and is more conducive to the discharge of bubbles; secondly, the lower lip body is designed as an integrated whole, and there is no need to assemble separate accessories for the glue inlet and glue outlet, which reduces frequent friction and extrusion during the unloading and installation process, prevents wear of the coating knife head, extends the service life of the coating knife head, and meets actual use needs.

[0042] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. An integrated coating blade structure, characterized in that: It includes an upper lip body, a gasket and a lower lip body which are sequentially connected and arranged last time; Two through-set glue outlets are formed at both ends of the upper lip body, and a through-set glue inlet is also formed between the two glue outlets; The gasket is provided with a notch; wherein a coating gap for glue discharge is formed between the upper lip, the lower lip and the notch; A flow channel is provided on one side of the lower lip body corresponding to the gasket, and the flow channel is located in the coating gap; overflow grooves are provided at both ends of the flow channel, and the overflow grooves are provided corresponding to the glue outlet up and down; a glue inlet groove corresponding to the glue inlet is also provided on the flow channel; Among them, when the liquid photosensitive glue enters the glue inlet groove through the glue inlet, the liquid photosensitive glue flows out from both ends of the flow channel evenly into the overflow groove, and then flows out from the glue outlet to exhaust the air. Finally, the liquid photosensitive glue flows out from the coating gap evenly without bubbles.

2. The integrated coating blade structure according to claim 1, characterized in that: The notch is in a U shape; the flow channel is arranged transversely along one side of the notch.

3. The integrated coating blade structure according to claim 1, characterized in that: The glue inlet is located in the middle of the two glue outlets.

4. The integrated coating blade structure according to claim 1, characterized in that: A one-way valve is also provided at the glue outlet.

5. The integrated coating blade structure according to claim 1, characterized in that: The material of the gasket is steel or PET.

6. The integrated coating blade structure according to claim 1, characterized in that: The diameters of the glue outlet and the glue inlet are 4 to 6 mm.

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