Flexible substrate winding coater

Abstract

The present invention belongs to the technical field of coating equipment, and in particular, relates to a flexible substrate winding coating machine, including a vacuum chamber and a winding assembly and a coating assembly arranged in the vacuum chamber; the coating assembly includes an evaporation boat and a wire feeding mechanism; the evaporation boat includes a boat body; the boat body is provided with an evaporation tank and a melting tank; there are multiple melting tanks, and multiple melting tanks are arranged around the evaporation tank; the melting tank is connected to the evaporation tank, so that the molten coating liquid in the melting tank flows into the evaporation tank. In the flexible substrate winding coating machine of the present invention, the molten coating liquid can be quickly and evenly distributed in the evaporation tank, improving the uniformity of the corrosion reaction on the surface of the evaporation boat and the uniformity of the evaporation of the coating liquid, and at the same time, avoiding the mechanical impact of the coating material introduced at a high speed, further improving the uniformity of the corrosion reaction on the surface of the evaporation boat, and then further improving the uniformity of the evaporation of the coating liquid, and improving the coating quality; and the introduction speed of the coating material is greatly reduced, making the feeding smoother.

Description

Technical Field

[0001] The invention belongs to the technical field of coating equipment, and in particular relates to a flexible substrate winding coating machine. Background Art

[0002] The coating of flexible substrates is generally achieved by a vacuum winding coating machine. The vacuum winding coating machine generally consists of a vacuum chamber, a winding assembly, and a coating assembly. Among them, the coating assembly includes an evaporation boat, which melts the coating material and evaporates it onto the surface of the flexible substrate to achieve the coating of the flexible substrate.

[0003] However, during evaporation, the coating material is introduced through a wire feeding mechanism, and then melted and flows to other parts of the evaporation tank. The corrosion reaction of the evaporation boat surface is not uniform due to the flow of the coating liquid and the mechanical impact of the coating material introduced at high speed, which leads to uneven resistance changes in various parts of the boat. In the direction parallel to the current, since the resistances at various locations are in series, under the condition of the same current, the power at the place with large resistance is higher than that at the place with small resistance; in the direction perpendicular to the current, the resistances at various locations are in parallel, and under the condition of the same voltage, the power at the place with small resistance is higher than that at the place with large resistance, which will seriously change the temperature distribution of the entire boat, making the flow direction and evaporation of the coating liquid uneven. Summary of the invention

[0004] The present invention aims at the problem of uneven corrosion reaction on the surface of the evaporation boat in the prior art and proposes the following technical solution:

[0005] A flexible substrate winding coating machine comprises a vacuum chamber and a winding assembly and a coating assembly arranged in the vacuum chamber; the coating assembly comprises an evaporation boat and a wire feeding mechanism;

[0006] The evaporation boat comprises a boat body; an evaporation tank and a melting tank are arranged on the boat body; there are a plurality of melting tanks, and the plurality of melting tanks are arranged around the evaporation tank; the melting tank is connected to the evaporation tank, so that the molten coating liquid in the melting tank flows into the evaporation tank;

[0007] The wire feeding mechanism includes a plurality of conveying roller groups arranged in one-to-one correspondence with the melting grooves.

[0008] A plurality of melting tanks are arranged on the evaporation boat, and the coating material is first melted in the melting tank and then flows into the evaporation tank. On the one hand, the plurality of melting tanks are arranged around the evaporation tank, and the coating liquid enters from multiple directions around the evaporation tank, so that the coating liquid is quickly and evenly distributed in the evaporation tank, and the distribution uniformity is good, which improves the uniformity of the corrosion reaction on the surface of the evaporation boat and the evaporation uniformity of the coating liquid, and improves the coating quality; on the other hand, the coating material is not directly introduced into the evaporation tank, which avoids the mechanical impact of the coating material introduced at a high speed, avoids the serious corrosion problem at the high-speed introduction point of the coating material, further improves the uniformity of the corrosion reaction on the surface of the evaporation boat, and then improves the life of the evaporation boat and the evaporation uniformity of the coating liquid, and improves the coating quality; further, each melting tank corresponds to a conveying roller group, so that multiple coating materials can enter at the same time, which greatly reduces the introduction speed of a single coating material and makes the feeding smoother.

[0009] As an improvement of the above technical solution, the flexible substrate winding coating machine, the wire feeding mechanism also includes a wire dividing disk, the wire dividing disk includes a disk body, the lower disk surface of the disk body is integrally provided with a wire dividing portion, the wire dividing portion is an inverted cone shape that gradually becomes smaller from top to bottom, and a plurality of wire threading holes are provided on the disk body, the number of the wire threading holes is the same as the number of the conveying roller groups, and the plurality of wire threading holes are arranged around the wire dividing portion.

[0010] The function of the wire separation disk is to separate multiple strands of coating materials bonded together into single strands, so that the single strands of coating materials are sent one by one to the melting tank through the conveying roller group, playing the role of wire separation and guidance.

[0011] As an improvement of the above technical solution, in the flexible substrate winding coating machine, the bottom of the melting tank is inclined, and the inclination direction is gradually downward from the side away from the evaporation tank to the side close to the evaporation tank, and a connecting port is provided between the lowest end of the bottom of the melting tank and the evaporation tank.

[0012] The bottom of the melting tank is designed to be inclined to ensure that the molten coating liquid flows quickly to the evaporation tank while avoiding residue.

[0013] As an improvement of the above technical solution, in the flexible substrate winding coating machine, the connecting port is in the shape of an elongated strip.

[0014] The connecting port is designed to be long and strip-shaped, which further improves the dispersion of the coating liquid when it enters the evaporation tank, and further improves the dispersion speed of the coating liquid after entering the evaporation tank, thereby improving the uniformity of corrosion on the surface of the evaporation boat and the uniformity of evaporation of the coating liquid.

[0015] The coating material used in the above-mentioned flexible substrate winding coating machine includes a plurality of coating material wires whose number is the same as that of the melting tanks, and the plurality of coating material wires are bonded together by an adhesive material.

[0016] The coating material is designed according to the structural characteristics of the winding coating machine to facilitate the transportation of the coating material.

[0017] The beneficial effects of the present invention are:

[0018] (1) The molten coating liquid can be quickly and evenly distributed in the evaporation tank, improving the uniformity of the corrosion reaction on the surface of the evaporation boat and the uniformity of the evaporation of the coating liquid.

[0019] (2) It avoids the mechanical impact of the coating material introduced at high speed, further improves the uniformity of the corrosion reaction on the surface of the evaporation boat, and further improves the evaporation uniformity of the coating liquid and improves the coating quality.

[0020] (3) Multiple coating materials enter at the same time, which greatly reduces the introduction speed of the coating materials and makes the feeding smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The figure shows a schematic structural diagram of a flexible substrate roll-to-roll coating machine as a specific embodiment of the present invention;

[0022] Figure 2 What is shown is a schematic diagram of the relative positions of the melting tank and the evaporation tank;

[0023] Figure 3 What is shown is a schematic structural diagram of a wire feeding mechanism as a specific embodiment of the present invention;

[0024] Figure 4 The figure shows a schematic diagram of the structure of a wire separation disk as a specific embodiment of the present invention;

[0025] Figure 5 Shown is a schematic structural diagram of a coating material as a specific embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Example

[0027] Figure 1 Shown is a schematic structural diagram of a flexible substrate winding coating machine as a specific embodiment of the present invention. Figure 2 Shown is a schematic diagram of the relative positions of the melting tank and the evaporation tank. Figure 1 , 2 In the present invention, a flexible substrate winding coating machine comprises a vacuum chamber 1 and a winding assembly 2 and a coating assembly 3 arranged in the vacuum chamber 1;

[0028] The coating assembly 3 includes an evaporation boat 31 and a wire feeding mechanism 32. The evaporation boat 31 includes a boat body 311. The boat body 311 is provided with an evaporation tank 3111 and a melting tank 3112. There are multiple melting tanks 3112, and the multiple melting tanks 3112 are arranged around the evaporation tank 3111. The melting tank 3112 is connected to the evaporation tank 3111, so that the molten coating liquid in the melting tank 3112 flows into the evaporation tank 3111.

[0029] The wire feeding mechanism 32 includes a plurality of conveying roller groups 321 arranged in one-to-one correspondence with the melting grooves 3112 .

[0030] During evaporation, the coating material is introduced through a wire feeding mechanism, and then melted and flows to other parts of the evaporation tank. The corrosion reaction of the evaporation boat surface is not uniform due to the flow of the coating liquid and the mechanical impact of the coating material introduced at high speed, which leads to uneven resistance changes in various parts of the boat. In the direction parallel to the current, since the resistances at various locations are in series, under the condition of the same current, the power at the place with large resistance is higher than that at the place with small resistance; in the direction perpendicular to the current, the resistances at various locations are in parallel, and under the condition of the same voltage, the power at the place with small resistance is higher than that at the place with large resistance, which will seriously change the temperature distribution of the entire boat, making the flow direction and evaporation of the coating liquid uneven.

[0031] The flexible substrate roll-to-roll coating machine of the present invention is provided with a plurality of melting tanks 3112 on the evaporation boat 31 , and the coating material is firstly melted in the melting tanks 3112 and then flows into the evaporation tanks 3111 . On the one hand, a plurality of melting tanks 3112 are arranged around the evaporation tank 3111, and the coating liquid enters from multiple directions around the evaporation tank 3111, so that the coating liquid is quickly and evenly distributed in the evaporation tank 3111, and the distribution uniformity is good, thereby improving the uniformity of the corrosion reaction on the surface of the evaporation boat and the evaporation uniformity of the coating liquid, and improving the coating quality; on the other hand, the coating material is not directly introduced into the evaporation tank, thereby avoiding the mechanical impact of the coating material introduced at a high speed, avoiding the serious corrosion problem at the high-speed introduction point of the coating material, further improving the uniformity of the corrosion reaction on the surface of the evaporation boat, and then improving the life of the evaporation boat and the evaporation uniformity of the coating liquid, and improving the coating quality; further, each melting tank 3112 corresponds to a conveying roller group 321, so that multiple coating materials enter at the same time, which greatly reduces the introduction speed of a single coating material and makes the feeding smoother; specifically, assuming that there are three groups of conveying roller groups 321 to convey the coating material, the introduction speed of a single group of coating materials is only one third of the original.

[0032] The present invention Figure 1 What is shown in the figure is a double-sided winding coating machine, which is only a specific implementation case of the present invention. Of course, it is also applicable to a single-sided winding coating machine or other winding coating machines.

[0033] The flexible substrate winding coating machine of the present invention can quickly and evenly distribute the molten coating liquid in the evaporation tank, thereby improving the uniformity of the corrosion reaction on the surface of the evaporation boat and the evaporation uniformity of the coating liquid. At the same time, it avoids the mechanical impact of the coating material introduced at a high speed, further improves the uniformity of the corrosion reaction on the surface of the evaporation boat, and then further improves the evaporation uniformity of the coating liquid, thereby improving the coating quality; and it greatly reduces the introduction speed of the coating material, making the feeding smoother.

[0034] Figure 3 FIG. 1 is a schematic diagram of the structure of a wire feeding mechanism as a specific embodiment of the present invention. Figure 4 Shown is a schematic structural diagram of a wire dividing disk as a specific embodiment of the present invention. Figure 3 , 4 In the figure, the wire feeding mechanism 32 also includes a wire dividing disk 322, and the wire dividing disk 322 includes a disk body 3221. The lower disk surface of the disk body 3221 is integrally provided with a wire dividing portion 3222, and the wire dividing portion 3222 is an inverted cone shape that gradually becomes smaller from top to bottom. A plurality of wire threading holes 3223 are provided on the disk body 3221, and the number of the wire threading holes 3223 is the same as the number of the conveying roller group 321, and the plurality of wire threading holes 3223 are arranged around the wire dividing portion 3222.

[0035] The function of the wire separation disk 322 is to separate multiple strands of coating materials bonded together into single strands, so that the single strands of coating materials are sent to the melting tank 3112 through the conveying roller group 321 one by one.

[0036] As an improvement of the above technical solution, see Figure 3 The bottom of the melting groove 3112 is inclined, and the inclination direction is gradually downward from the side away from the evaporation groove 3111 to the side close to the evaporation groove 3111. A connecting port 31121 is provided between the lowest end of the bottom of the melting groove 3112 and the evaporation groove 3111.

[0037] The bottom of the melting tank 3112 is designed to be inclined to ensure that the molten coating liquid flows quickly to the evaporation tank while avoiding residue.

[0038] As an improvement of the above technical solution, see Figure 2 , 3 , the communicating port 31121 is in the shape of an elongated strip.

[0039] The connecting port 31121 is designed to be long and strip-shaped, which further improves the dispersion of the coating liquid when it enters the evaporation tank 3111, and further improves the dispersion speed of the coating liquid after entering the evaporation tank 3111, thereby improving the corrosion uniformity of the evaporation boat surface and the evaporation uniformity of the coating liquid.

[0040] Figure 5Shown is a schematic structural diagram of a coating material as a specific embodiment of the present invention. Figure 5 In the above-mentioned flexible substrate winding coating machine, the coating material includes a plurality of coating material wires 9 whose number is the same as the melting tank 3112, and the plurality of coating material wires 9 are bonded together by an adhesive material.

[0041] The multiple strands of coating material filaments 9 are bonded together by a viscous material to form one strand, which is then wound into a roll. When coating, the strands are placed on a roll-out rack for unwinding, and are separated into multiple strands by a wire separation plate 322 and then transported to corresponding melting tanks 3112 by conveying roller groups 321. When bonding the multiple strands of coating material filaments 9, a bonding material that can easily separate the strands of coating material filaments 9 is used.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A flexible substrate winding coating machine, comprising a vacuum chamber (1), a winding assembly (2) and a coating assembly (3) arranged in the vacuum chamber (1); the coating assembly (3) comprising an evaporation boat (31) and a wire feeding mechanism (32); characterized in that: The evaporation boat (31) comprises a boat body (311); an evaporation groove (3111) and a melting groove (3112) are arranged on the boat body (311); there are a plurality of melting grooves (3112), and the plurality of melting grooves (3112) are arranged around the evaporation groove (3111); the melting groove (3112) and the evaporation groove (3111) are connected so that the molten coating liquid in the melting groove (3112) flows into the evaporation groove (3111); The wire feeding mechanism (32) comprises a plurality of conveying roller groups (321) arranged in one-to-one correspondence with the melting grooves (3112); The bottom of the melting groove (3112) is inclined, and the inclination direction is gradually inclined downward from the side away from the evaporation groove (3111) to the side close to the evaporation groove (3111), and a connecting port (31121) is provided between the lowest end of the bottom of the melting groove (3112) and the evaporation groove (3111); The communication opening (31121) is in the shape of an elongated strip.

2. The flexible substrate roll-to-roll coating machine according to claim 1, characterized in that: The wire feeding mechanism (32) further comprises a wire dividing disk (322), the wire dividing disk (322) comprising a disk body (3221), a wire dividing portion (3222) being integrally provided on the lower disk surface of the disk body (3221), the wire dividing portion (3222) being in the shape of an inverted cone that gradually becomes smaller from top to bottom, a plurality of wire threading holes (3223) being provided on the disk body (3221), the number of the wire threading holes (3223) being the same as the number of the conveying roller group (321), and the plurality of wire threading holes (3223) being provided around the wire dividing portion (3222).

3. The coating material used in the flexible substrate winding coating machine as claimed in claim 1 or 2, characterized in that: It comprises a plurality of coating material threads (9) whose number is the same as that of the melting tanks (3112), wherein the plurality of coating material threads (9) are bonded together by an adhesive material.

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