Perovskite coating die head with V-shaped runner

Abstract

The invention provides a V-shaped runner perovskite coating die head which comprises a left die body, a right die body and a gasket arranged between the left die body and the right die body, the left die body, the right die body and the gasket are connected into a whole through a die locking screw, a feeding port is formed in the rear side face of the right die body, and an inwards-sunken buffer runner is arranged on the inner side surface of the right die body. The gasket comprises a breadth part with the top extending transversely and guide parts with the two ends extending longitudinally, the breadth part is located in the rear side area of the buffering runner, and the guide parts are located in the left side area and the right side area of the buffering runner; and a slit extrusion channel is formed between the left die body and the right die body in the front side area of the buffer runner, and raw materials enter from the feeding port, reach the buffer runner through the feeding channel and are extruded from the slit extrusion channel under the guidance of the gasket. A unique runner can be effectively arranged for perovskite coating, the coating requirement is met, raw materials are evenly extruded on the die head in different breadth directions, and the quality of coated products is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of dies, and more particularly to a V-shaped channel perovskite coating die. Background Art

[0002] The perovskite coating die is applied to the production of perovskite photovoltaic solar panels, and can coat perovskite solution on a glass substrate or a flexible substrate. Since the viscosity of the perovskite solution is low and its coating thickness is extremely thin, this places high requirements on the channel structure inside the die. Summary of the Invention

[0003] In view of the above problems, the present invention aims to provide a V-shaped channel perovskite coating die, which has a novel structure and a unique channel set for perovskite coating to meet the coating requirements.

[0004] The technical solution of the present invention is a V-shaped channel perovskite coating die, which includes a left die body, a right die body and a gasket disposed between the two. The above three are connected into one body by clamping screws. An inlet is provided on the rear side surface of the right die body, and an inwardly concave buffer channel is provided on the inner surface of the right die body. The buffer channel and the inlet are connected through a feed channel. The gasket includes a width portion with a transverse extension at the top and guiding portions with longitudinal extensions at both ends. The width portion is located in the rear region of the buffer channel, and the guiding portions are located in the left and right regions of the buffer channel. A slit extrusion channel is formed between the left die body and the right die body in the front region of the buffer channel. The raw material enters from the inlet, reaches the buffer channel through the feed channel, and is extruded from the slit extrusion channel under the guidance of the gasket. The buffer channel is a V-shaped channel, the feed channel is located at the middle position in the rear of the buffer channel, the buffer channel diffuses in a V shape from the middle to both sides from the rear to the front, the width of the buffer channel in the front along the width direction is adapted to the distance between the left and right guiding portions of the gasket, and the front end of the buffer channel is in smooth surface transition with the surface of the right die body.

[0005] Preferably, a deformation groove is provided through the right die body at the die lip at the front end of the right die body along the width direction. A row of fine adjustment screws is uniformly provided on the outer side surface of the front end of the right die body along the width direction. The front part of the fine adjustment screw passes through the deformation groove and is connected to the die lip. By turning the fine adjustment screw, the deformation of the die lip is adjusted to finally finely adjust the width of the slit extrusion channel at the die lip.

[0006] The present invention can effectively set a unique channel corresponding to the low viscosity characteristic of perovskite coating to meet the coating requirements, so that the raw material is uniformly extruded in different width directions on the die, ensuring the quality of the coated product. Brief Description of the Drawings

[0007] Figure 1 is a structural schematic diagram of the present invention; Figure 2 is Figure 1 an exploded view of Figure 3 is Figure 1 schematic diagram of the internal structure; Wherein: 1 - left die body; 2 - right die body; 21 - feed inlet; 22 - buffer channel; 23 - feed channel; 24 - deformation groove; 3 - gasket; 31 - width part; 32 - guiding part; 4 - clamping screw; 5 - slit extrusion channel; 6 - fine adjustment screw. Specific embodiments

[0008] The present invention will be further described in detail below with reference to the accompanying drawings.

[0009] As Figures 1 to 3 shown, the present invention provides a V-shaped channel perovskite coating die head, including a left die body 1, a right die body 2 and a gasket 3 disposed between the two. The above three are connected into one body by a clamping screw 4. A feed inlet 21 is provided on the rear side surface of the right die body 2, and an inwardly concave buffer channel 22 is provided on the inner surface of the right die body 2. The buffer channel 22 and the feed inlet 21 are communicated through a feed channel 23. The gasket 3 includes a width part 31 with a transverse extension at the top and guiding parts 32 with longitudinal extensions at both ends. The width part 31 is located in the rear area of the buffer channel 22, and the guiding parts 32 are located in the left and right areas of the buffer channel 22. A slit extrusion channel 5 is formed between the left die body 1 and the right die body 2 in the front area of the buffer channel 22. The raw material enters from the feed inlet 21, reaches the buffer channel 22 through the feed channel 23, fills the entire buffer channel 22 and is evenly extruded from the front slit extrusion channel 5 under the guidance of the gasket 3. The buffer channel 22 is a V-shaped channel. The feed channel 23 is located at the middle position of the rear part of the buffer channel 22. The buffer channel 22 diffuses in a V-shape from the middle to both sides from the rear to the front. The width of the front part of the buffer channel 22 in the width direction is adapted to the distance between the two guiding parts 32 of the gasket 3 on the left and right. The front end of the buffer channel 22 is in smooth surface transition with the surface of the right die body 2. The raw material enters from the feed inlet 21, reaches the rear part of the V-shaped channel of the buffer channel 22 through the feed channel 23, diffuses in a conical shape to both sides while flowing forward, fills the entire buffer channel 22 and is evenly extruded from the front slit extrusion channel 5 under the guidance of the gasket 3.

[0010] In the above solution, a deformation groove 24 is provided through the width direction at the die lip at the front end of the right die body 2. A row of fine adjustment screws 6 are evenly arranged on the outer side surface of the front end of the right die body 2 in the width direction. The front part of the fine adjustment screw 6 passes through the deformation groove 24 and is connected to the die lip. By turning the fine adjustment screw 6, the deformation of the die lip is adjusted to finally finely adjust the width of the slit extrusion channel 5 at the die lip.

[0011] The above channel structure can be applicable to the characteristics of generally low viscosities of perovskite raw materials with different ratios, and finally ensure that perovskite raw materials with different viscosities can be evenly extruded and coated in the die head.

[0012] The above are only the preferred embodiments of the present invention, and do not impose any formal restrictions on the invention. Any simple modifications, equivalent changes or decorations made to the above embodiments based on the technical principles of the present invention still fall within the scope of the technical solutions of the present invention.

Claims

1. A V-shaped flow channel perovskite coating die head, characterized in that; It includes a left mold body (1), a right mold body (2) and a gasket (3) arranged between the two. The above three are connected into one body by clamping screws (4). A feed port (21) is arranged on the rear side surface of the right mold body (2). An inwardly concave buffer flow channel (22) is arranged on the inner surface of the right mold body (2). The buffer flow channel (22) and the feed port (21) are communicated through a feed channel (23). The gasket (3) includes a width portion (31) with a horizontally extending top and guiding portions (32) longitudinally extending at both ends. The width portion (31) is located in the rear area of the buffer flow channel (22). The guiding portions (32) are located in the left and right areas of the buffer flow channel (22). A slit extrusion channel (5) is formed between the left mold body (1) and the right mold body (2) in the front area of the buffer flow channel (22). The raw material enters from the feed port (21), reaches the buffer flow channel (22) through the feed channel (23), and is extruded from the slit extrusion channel (5) under the guidance of the gasket (3). The buffer flow channel (22) is a V-shaped flow channel. The feed channel (23) is located at the middle position of the rear part of the buffer flow channel (22). The buffer flow channel (22) diffuses in a V-shape from the middle to both sides from the back to the front. The width of the front part of the buffer flow channel (22) in the width direction is adapted to the distance between the left and right guiding portions (32) of the gasket (3). The front end of the buffer flow channel (22) is in smooth surface transition with the surface of the right mold body (2).

2. The V-shaped flow channel perovskite coating die head according to claim 1, characterized in that; A deformation groove (24) is arranged through the lip of the front end of the right mold body (2) in the width direction. A row of fine adjustment screws (6) is evenly arranged on the outer side surface of the front end of the right mold body (2) in the width direction. The front part of the fine adjustment screw (6) passes through the deformation groove (24) and is connected to the lip. By turning the fine adjustment screw (6), the deformation of the lip is adjusted to finally finely adjust the width of the slit extrusion channel (5) at the lip.

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