A coating cutter head based on Metal Mesh

Abstract

The utility model discloses a coating knife head based on Metal Mesh, comprising an upper lip, a Shim sheet and a lower lip arranged in sequence from top to bottom; the Shim sheet is concave, and a glue outlet gap is formed between the upper lip, the lower lip and the concave shape of the Shim sheet; a glue outlet flow channel and a glue outlet flow channel communicating with the glue outlet gap are opened on the lower lip; the glue feed flow channel is located above the glue outlet flow channel, and the glue feed flow channel and the glue outlet flow channel are communicated; a glue feed port penetrating one side of the lower lip is provided on one side of the glue feed flow channel, and glue outlet ports penetrating both sides of the lower lip are provided on both sides of the glue outlet flow channel. The photosensitive glue in the utility model flows from the glue feed port to the glue feed flow channel and then flows into the glue outlet flow channel, and then flows out from the glue outlet ports on both sides of the glue outlet flow channel, so that the internal air is exhausted in the left and right directions respectively, increasing the exhaust speed of the air, the air pressure on both sides of the internal is stable, the bubbles can be completely discharged during the glue filling process, the photosensitive glue during the coating operation will not have bubbles, the product has a high yield rate, and meets the use requirements.

Description

Technical Field

[0001] The utility model relates to a coating cutter head, in particular to a coating cutter head based on Metal Mesh. Background Art

[0002] Traditional ITO film cannot be bent or folded, and its conductivity cannot meet the requirements of medium and large-sized touch panels. In addition, ITO is a scarce resource and is non-renewable. ITO alternative technologies include metal mesh, nano silver wire, carbon nanotube, and graphene. Currently, carbon nanotube and graphene cannot be industrialized and mass-produced, and the conductivity of the materials cannot meet the requirements; while metal mesh and nano silver wire materials have been industrialized and mass-produced. Compared with the two, Metal Mesh technology is more mature.

[0003] 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 extremely fine grid line width requires that the lithography process is particularly important for the selection of protective glue. The current liquid photosensitive glue material can meet the needs of mass production of the process.

[0004] The existing coating method is achieved by a coating knife, which consists of an upper lip, a shim sheet, and a lower lip. The upper lip, the shim sheet, and the 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 opening. The photosensitive adhesive comes out of the gap and is evenly coated on the surface of the material.

[0005] However, in actual operations, it was found that the glue inlet and glue outlet were respectively arranged on both sides of the lower lip. When the liquid photosensitive glue enters from the glue inlet, the liquid photosensitive glue flows into the glue outlet from left to right in turn, and then flows out of the glue outlet for coating. From the glue inlet to the glue outlet, due to the large flow diameter, the inside is filled with liquid photosensitive glue. Under the action of pressure, the internal air cannot be completely and effectively discharged, resulting in the bubbles in the cutter head and the photosensitive glue being coated on the material surface together during the coating operation. There is no photosensitive glue protection at the bubble, which makes the material circuit or grid disconnected after etching, resulting in abnormal product function yield, and thus unable to meet the needs of industrial mass production. Utility Model Content

[0006] The utility model aims to overcome the deficiencies of the prior art and to provide a coating knife head based on Metal Mesh, which has no bubbles generated during coating and has a high product yield.

[0007] To achieve the above object, the technical solution adopted by the utility model is: a coating knife head based on Metal Mesh, comprising an upper lip, a Shim sheet and a lower lip arranged in sequence from top to bottom; the Shim sheet is concave, and a glue outlet gap for glue outlet is formed between the upper lip, the lower lip and the concave shape of the Shim sheet;

[0008] The lower lip is provided with a glue outlet channel and a glue outlet channel which are in communication with the glue outlet gap; the glue inlet channel is located above the glue outlet channel, and the glue inlet channel and the glue outlet channel are in communication; one side of the glue inlet channel is provided with a glue inlet which passes through one side of the lower lip, and both sides of the glue outlet channel are provided with glue outlets which pass through both sides of the lower lip;

[0009] The photosensitive adhesive enters the adhesive inlet flow channel from the adhesive inlet, flows into the adhesive outlet flow channel, and then flows out from the adhesive outlets on both sides of the adhesive outlet flow channel.

[0010] Furthermore, the length of the glue inlet flow channel is half of that of the glue outlet flow channel, and one end of the glue inlet flow channel opposite to the glue inlet is connected to the glue outlet flow channel through a connecting flow channel.

[0011] Furthermore, the glue inlet flow channel and the glue outlet flow channel are arranged relatively parallel, and the connecting flow channel is vertically distributed to the glue inlet flow channel and the glue outlet flow channel.

[0012] Furthermore, a one-way control valve is provided at the glue outlet.

[0013] Furthermore, the diameters of the glue inlet and the glue outlet are less than 6 mm.

[0014] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0015] The utility model discloses a coating knife head based on Metal Mesh. After the photosensitive glue enters the glue inlet flow channel from the glue inlet, it flows into the glue outlet flow channel, and then flows out from the glue outlets on both sides of the glue outlet flow channel. In this way, the internal air is exhausted to the left and right directions respectively, thereby increasing the exhaust speed of the air, stabilizing the air pressure on both sides of the interior, and the bubbles can be completely exhausted during the glue filling process. In this way, the photosensitive glue will not contain bubbles during the coating operation, and the product has a high yield rate, which meets the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The technical solution of the utility model is further described below in conjunction with the accompanying drawings:

[0017] Figure 1 This is a three-dimensional structural view of an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a shim sheet in one embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of a three-dimensional structure after omitting the upper lip in one embodiment of the utility model;

[0021] Figure 5 For attachment Figure 4 A magnified view of part A in FIG.

[0022] Among them: upper lip 1, shim sheet 2, lower lip 3, glue outlet flow channel 30, glue outlet flow channel 31, connecting flow channel 32, glue inlet 300, glue outlet 310. DETAILED DESCRIPTION

[0023] 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.

[0024] The utility model provides a coating knife head based on Metal Mesh to solve the problem in the prior art that the gas inside the coating knife head cannot be completely and effectively discharged, resulting in the bubbles in the coating knife and the photosensitive adhesive being coated on the material surface together, causing the circuit or mesh of the material to be disconnected after etching, resulting in abnormal product function yield.

[0025] For ease of understanding, the specific process in the embodiments of the present application is described below. Figures 1 to 4 A coating knife head based on Metal Mesh in the embodiment of the present application comprises an upper lip 1, a Shim sheet 2 and a lower lip 3 which are arranged in sequence from top to bottom; the Shim sheet 2 is concave, and a glue outlet gap for glue outlet is formed between the upper lip 1, the lower lip 3 and the concave shape of the Shim sheet 2; a glue outlet channel 30 and a glue outlet channel 31 which are communicated with the glue outlet gap are opened on the lower lip 3; the glue inlet channel 30 is located above the glue outlet channel 31, and the glue inlet channel 30 and the glue outlet channel 31 are communicated; a glue inlet port 300 which passes through one side of the lower lip 3 is provided on one side of the glue inlet channel 30, and glue outlet ports 310 which pass through both sides of the lower lip 3 are provided on both sides of the glue outlet channel 31.

[0026] In the coating knife head based on Metal Mesh of the utility model, the photosensitive glue enters the glue inlet channel 30 from the glue inlet 300 and then flows into the glue outlet channel 31, and then flows out from the glue outlets 310 on both sides of the glue outlet channel 31, so that the internal air is exhausted to the left and right directions respectively, thereby increasing the exhaust speed of the air and stabilizing the air pressure on both sides of the interior. In this way, bubbles can be completely exhausted during the glue filling process, so that the photosensitive glue will not contain bubbles during the coating operation, and the product yield rate is high.

[0027] based on Figure 4 and Figure 5 In this embodiment, the length of the glue inlet channel 30 is half of the glue outlet channel 31, and the end of the glue inlet channel 30 opposite to the glue inlet port 300 is connected to the glue outlet channel 31 through a connecting channel 32, so that the photosensitive glue flowing in from the glue inlet port 300 can enter the middle position of the glue outlet channel 30 through the connecting channel 32, and then flow evenly from both sides of the glue outlet channel 30, and finally flow out from the two glue outlets 310 respectively. The air exhaust speed is fast, and the pressure on both sides is evenly distributed, so that the gas in the cutter head can be quickly and effectively discharged, and the generation of bubbles is well avoided.

[0028] In addition, based on Figure 5 In this embodiment, the glue inlet channel 30 and the glue outlet channel 31 are arranged relatively parallel, and the connecting channel 32 and the glue inlet channel 30 and the glue outlet channel 31 are arranged vertically, so that the photosensitive glue entering the glue inlet channel 30 can quickly flow into the middle position of the glue outlet channel 31, and then the air in the cutter head is evenly and quickly discharged from both sides to avoid the generation of bubbles.

[0029] In this embodiment, a one-way control valve is also installed at the glue outlet 300. When pouring glue, the one-way control valve here is opened, so that the waste liquid during the glue pouring will be discharged from the glue outlet 300 through the one-way control valve. When it is officially working, the one-way control valve is closed, thereby sealing the glue outlet 300 on both sides, and the photosensitive glue flows out from the glue outlet gap.

[0030] In addition, in this embodiment, the diameters of the glue inlet 300 and the glue outlet 310 are less than 6 mm. Reducing the diameters of the glue inlet and glue outlet can reduce the pressure inside the cutter head during glue pouring, reduce the probability of bubble generation, and further improve the product yield.

[0031] During actual operation, first open the one-way control valve at the glue outlet 300, and initially perform glue filling operation. The photosensitive glue enters the glue inlet channel 30 from the glue inlet 300 on the upper left side, and then flows to the middle part of the glue outlet channel through the connecting channel 32. The photosensitive glue flows evenly in the left and right directions of the glue outlet channel 31 to the glue outlet 310 on the far left and right sides, and then the waste liquid is discharged through the opened one-way control valve. In this way, the air inside the coating blade is discharged in two directions, which increases the exhaust speed of the air and stabilizes the air pressure on both sides of the interior. At the same time, the pressure on both sides of the interior is evenly distributed, so that the bubbles can be completely discharged during the glue filling process.

[0032] After the glue filling is completed, the liquid photosensitive glue is applied. At this time, the one-way control valve is closed, so that there will be no bubbles applied together with the liquid photosensitive glue, and the Metal Mesh will not be broken, which improves the yield rate of subsequent products.

[0033] 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. A coating tool head based on Metal Mesh, characterized by: It comprises an upper lip, a shim sheet and a lower lip which are sequentially arranged in the upper and lower parts; the shim sheet is concave, and a glue outlet gap for glue outlet is formed between the upper lip, the lower lip and the concave part of the shim sheet; The lower lip is provided with a glue inlet channel and a glue outlet channel which are in communication with the glue outlet gap; the glue inlet channel is located above the glue outlet channel, and the glue inlet channel and the glue outlet channel are in communication; one side of the glue inlet channel is provided with a glue inlet which passes through one side of the lower lip, and both sides of the glue outlet channel are provided with glue outlets which pass through both sides of the lower lip; The photosensitive adhesive enters the adhesive inlet flow channel from the adhesive inlet, flows into the adhesive outlet flow channel, and then flows out from the adhesive outlets on both sides of the adhesive outlet flow channel.

2. The coating tool head based on Metal Mesh according to claim 1, characterized in that: The length of the glue inlet flow channel is half of that of the glue outlet flow channel, and one end of the glue inlet flow channel opposite to the glue inlet is communicated with the glue outlet flow channel through a connecting flow channel.

3. The coating tool head based on Metal Mesh according to claim 2, characterized in that: The glue inlet flow channel and the glue outlet flow channel are arranged relatively parallel to each other, and the connecting flow channel is vertically distributed to the glue inlet flow channel and the glue outlet flow channel.

4. The coating tool head based on Metal Mesh according to claim 1, characterized in that: A one-way control valve is also provided at the glue outlet.

5. The coating tool head based on Metal Mesh according to claim 1, characterized in that: The diameters of the glue inlet and the glue outlet are less than 6 mm.

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