Perovskite coating die head

Abstract

The utility model provides a 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 formed in 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] This invention relates to the field of die-making technology, and in particular to a perovskite coating die. Background Technology

[0002] Perovskite coating dies are used in the production of perovskite photovoltaic solar panels. They can coat perovskite solutions on glass or flexible substrates. Because perovskite solutions have low viscosity, the coating thickness is extremely thin, which places high demands on the flow channel structure inside the die. Summary of the Invention

[0003] To address the aforementioned problems, this invention aims to provide a perovskite coating die head with a novel structure and a unique flow channel designed for perovskite coating to meet coating requirements.

[0004] The technical solution of this invention is a perovskite coating die head, including a left die body, a right die body, and a gasket disposed between the two. The left die body, the right die body, and the gasket are connected as a whole by a locking screw. The rear side of the right die body is provided with a feed port, and the inner surface of the right die body is provided with an inwardly recessed buffer channel. The buffer channel and the feed port are connected by a feed channel. The gasket includes a width portion extending laterally at the top and guide portions extending longitudinally at both ends. The width portion is located in the rear region of the buffer channel, and the guide portions are located in the left and right side 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 feed port, passes through the feed channel, reaches the buffer channel, and is extruded from the slit extrusion channel under the guidance of the gasket.

[0005] Preferably, a deformation groove is provided through the die lip at the front end of the right die body along the width direction, and a row of fine-tuning screws is evenly arranged on the outer side of the front end of the right die body along the width direction. The front part of the fine-tuning screw passes through the deformation groove and is connected to the die lip. The width of the slit extrusion channel at the die lip is finally fine-tuned by turning the fine-tuning screw.

[0006] Preferably, the buffer channel is a V-shaped channel, the feed channel is located in the middle of the rear part of the buffer channel, the buffer channel diffuses in a V-shape from back to front and from the middle to both sides, the width of the front part of the buffer channel along the width direction is adapted to the distance between the left and right guide parts of the gasket, and the front end of the buffer channel has a smooth transition with the surface of the right mold body.

[0007] Preferably, the buffer channel is a direct current channel, the feed channel is located in the middle of the rear part of the buffer channel, the width of the buffer channel is consistent from the rear to the front in the width direction, the width of the front part of the buffer channel in the width direction is adapted to the distance between the left and right guide parts of the gasket, and the front end of the buffer channel has a smooth transition with the surface of the right mold body.

[0008] Preferably, the buffer channel is a multi-channel structure, with the feed channel located in the middle of the right mold body. The buffer channel includes interconnected primary, secondary, and tertiary channels and a transverse buffer groove from back to front. The primary channel extends to the left and right along the width of the right mold body, splitting into two. The secondary channel connects to the primary channel in the middle and extends to the left and right along the width of the right mold body, splitting into two. The tertiary channel connects to the secondary channel in the middle and extends to the left and right along the width of the right mold body, splitting into two. The width of the transverse buffer groove along the width direction is adapted to the distance between the two guide parts on the left and right of the gasket. The rear end of the transverse buffer groove is evenly connected to eight tertiary channels.

[0009] Preferably, the buffer channel includes a first buffer groove located on the inner side of the right mold body and a second buffer groove located in front of the first buffer groove. The left, middle and right regions at the rear of the first buffer groove are all connected to the feeding channel. The width of the first buffer groove and the second buffer groove along the width direction is adapted to the distance between the left and right guide parts of the gasket.

[0010] Preferably, the depth and front-to-back width of the second buffer groove are both smaller than the depth and front-to-back width of the first buffer groove.

[0011] This invention can effectively design unique flow channels to meet the low viscosity characteristics of perovskite coating, thereby ensuring uniform extrusion of raw materials in different width directions on the die and guaranteeing the quality of coated products. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the first structure of the present invention;

[0013] Figure 2 for Figure 1 Exploded view;

[0014] Figure 3 for Figure 1 Internal structure diagram;

[0015] Figure 4 This is a schematic diagram of the second structure of the present invention;

[0016] Figure 5 for Figure 4 Exploded view;

[0017] Figure 6 for Figure 4 Internal structure diagram;

[0018] Figure 7 This is a schematic diagram of the third structure of the present invention;

[0019] Figure 8 for Figure 7 Exploded view;

[0020] Figure 9 for Figure 7 Internal structure diagram;

[0021] Figure 10 This is a schematic diagram of the fourth structure of the present invention;

[0022] Figure 11 for Figure 10 Exploded view;

[0023] Figure 12 for Figure 10 Internal structure diagram;

[0024] Wherein: 1—Left mold body; 2—Right mold body; 21—Feed inlet; 22—Buffer runner; 221—Primary runner; 222—Secondary runner; 223—Tertiary runner; 224—Transverse buffer groove; 225—First buffer groove; 226—Second buffer groove; 23—Feed channel; 24—Deformation groove; 3—Shim; 31—Width section; 32—Guide section; 4—Mold locking screw; 5—Slit extrusion channel; 6—Fine adjustment screw. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings.

[0026] like Figures 1 to 12 As shown, the present invention provides a perovskite coating die head, including a left die body 1, a right die body 2, and a gasket 3 disposed between the two. The left die body 1, the right die body 2, and the gasket 3 are connected as one unit by a locking screw 4. The rear side of the right die body 2 is provided with a feed port 21, and the inner surface of the right die body 2 is provided with an inwardly recessed buffer channel 22. The buffer channel 22 and the feed port 21 are connected by a feed channel 23. The gasket 3 includes a width portion 31 extending laterally at the top and guide portions 32 extending longitudinally at both ends. The width portion 31 is located in the rear region of the buffer channel 22, and the guide portions 32 are located in the left and right sides 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 region of the buffer channel 22. The raw material enters from the feed port 21, passes through the feed channel 23, and reaches the buffer channel 22. After filling the entire buffer channel 22, it is uniformly extruded from the slit extrusion channel 5 in the front under the guidance of the gasket 3.

[0027] In the above scheme, a deformation groove 24 is provided through the die lip at the front end of the right die body 2 along the width direction. A row of fine-tuning screws 6 is evenly arranged on the outer side of the front end of the right die body 2 along the width direction. The front part of the fine-tuning screw 6 passes through the deformation groove 24 and is connected to the die lip. The width of the slit extrusion channel 5 at the die lip is finally fine-tuned by turning the fine-tuning screw 6 to adjust the deformation of the die lip.

[0028] As a specific flow channel structure, such as Figures 1 to 3 As shown, the buffer channel 22 is a V-shaped channel, and the feed channel 23 is located in the middle of the rear part of the buffer channel 22. The buffer channel 22 diffuses in a V-shape from back to front and from the middle to both sides. The width of the front part of the buffer channel 22 along the width direction is adapted to the distance between the two guide parts 32 on the left and right sides of the gasket 3. The front end of the buffer channel 22 has a smooth transition with the surface of the right mold body 2. The raw material enters from the feed port 21, passes through the feed channel 23, and reaches the rear part of the V-shaped channel of the buffer channel 22. While flowing forward, it diffuses to both sides in a cone shape. After filling the entire buffer channel 22, it is uniformly extruded from the front slit extrusion channel 5 under the guidance of the gasket 3.

[0029] As a specific flow channel structure, such as Figures 4 to 6 As shown, the buffer channel 22 is a direct current channel, and the feed channel 23 is located in the middle of the rear part of the buffer channel 22. The width of the buffer channel 22 is consistent from the rear to the front in the width direction. The width of the front part of the buffer channel 22 in the width direction is adapted to the distance between the two guide parts 32 on the left and right sides of the gasket 3. The front end of the buffer channel 22 has a smooth transition with the surface of the right mold body 2. The raw material enters from the feed port 21, passes through the feed channel 23, and reaches the rear part of the direct current channel of the buffer channel 22. While flowing forward, it diffuses to both sides, filling the entire buffer channel 22. Under the guidance of the gasket 3, it is uniformly extruded from the front slit extrusion channel 5.

[0030] As a specific flow channel structure, such as Figures 7 to 9 As shown, the buffer channel 22 has a multi-channel structure, and the feed channel 23 is located in the middle of the right mold body 2. The buffer channel 22 includes interconnected primary channel 221, secondary channel 222, tertiary channel 223 and transverse buffer groove 224 from back to front. The primary channel 221 extends to the left and right along the width direction of the right mold body 2 to achieve a division into two. The middle part of the secondary channel 222 is connected to the primary channel 221 and extends to the left and right along the width direction of the right mold body 2 to achieve a division into two. The middle part of the tertiary channel 223 is connected to the secondary channel 222 and extends to the left and right along the width direction of the right mold body 2 to achieve a division into two. The width of the transverse buffer groove 224 along the width direction is adapted to the distance between the two guide parts 32 on the left and right of the gasket 3. The rear end of the transverse buffer groove 224 is evenly connected to eight tertiary channels 223. The raw material enters from the feed inlet 21, passes through the feed channel 23 to the middle of the primary flow channel 221, flows along the left and right sides and then forward to the middle of the secondary flow channel 222, flows along the left and right sides and then forward to the middle of the tertiary flow channel 223, flows along the left and right sides and then forward to the transverse buffer trough 224. Finally, the eight tertiary flow channels 223 are evenly distributed along the width direction and are connected to the transverse buffer trough 224. After filling the entire transverse buffer trough 224, the raw material is evenly extruded from the front slit extrusion channel 5 under the guidance of the gasket 3.

[0031] As a specific flow channel structure, such as Figures 10 to 12 As shown, the buffer channel 22 includes a first buffer groove 225 located on the inner side of the right mold body 2 and a second buffer groove 226 located in front of the first buffer groove 225. The left, middle and right areas of the rear of the first buffer groove 225 are all connected to the feed channel 23. The width of the first buffer groove 225 and the second buffer groove 226 in the width direction is adapted to the distance between the left and right guide parts 32 of the gasket 3. The raw material enters from the feed port 21 and simultaneously reaches the left, middle and right positions of the first buffer groove 225 through the three feed channels 23. The raw material diffuses to both sides at the same time, fills the entire first buffer groove 225, and then flows forward into the second buffer groove 226. After filling the second buffer groove 226, it is uniformly extruded from the front slit extrusion channel 5 under the guidance of the gasket 3.

[0032] Furthermore, the depth and front-to-back width distance of the second buffer groove 226 are both smaller than the depth and front-to-back width distance of the first buffer groove 225.

[0033] The four different flow channel structures mentioned above can be applied to the generally low viscosity characteristics of perovskite raw materials with different proportions, ultimately ensuring that perovskite raw materials of different viscosities can be uniformly extruded and coated in the die.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention in any way. Any simple modifications, equivalent changes, or alterations made to the above embodiments based on the technical principles of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A perovskite coating die characterized by; The utility model relates to a left mould body (1), right mould body (2) and the gasket (3) of setting between both, left mould body (1), right mould body (2) and gasket (3) are connected as a whole through mould locking screw (4), the rear side of right mould body (2) is provided with feed inlet (21), and the inside surface of right mould body (2) is provided with the buffer flow channel (22) that is recessed inwards, and the buffer flow channel (22) and feed inlet (21) are communicated through feed channel (23), the gasket (3) includes the width part (31) that top is transversely extended and two ends are longitudinally extended guide part (32), the width part (31) is located the rear side area of buffer flow channel (22), the guide part (32) is located buffer flow channel (22) left and right two side area, the left mould body (1) and right mould body (2) between the buffer flow channel (22) front side area form slit extrusion channel (5), and the raw material reaches buffer flow channel (22) from feed inlet (21) through feed channel (23), and is extruded from slit extrusion channel (5) under the guidance of gasket (3).

2. The perovskite coating die of claim 1, wherein; The die lip at the front end of right mould body (2) is provided with deformation groove (24) along the width direction, and a row of fine adjustment screw rod (6) is uniformly arranged on the outside surface of the front end of right mould body (2) along the width direction, the front part of fine adjustment screw rod (6) passes through deformation groove (24) and is connected on the die lip, and the width of slit extrusion channel (5) at the die lip is finally adjusted by screwing fine adjustment screw rod (6).

3. The perovskite coating die of claim 1, wherein; The buffer flow channel (22) is V-shaped flow channel, the feed channel (23) is located at the middle position of the rear part of buffer flow channel (22), the buffer flow channel (22) is diffused from the middle to both sides from back to front, the width of the front part of buffer flow channel (22) along the width direction is adapted to the distance between the left and right two guide parts (32) of gasket (3), and the front end of buffer flow channel (22) and the surface of right mould body (2) are smoothly transitioned.

4. The perovskite coating die of claim 1, wherein; The buffer flow channel (22) is straight flow channel, the feed channel (23) is located at the middle position of the rear part of buffer flow channel (22), the width of buffer flow channel (22) along the width direction is consistent from back to front, the width of the front part of buffer flow channel (22) along the width direction is adapted to the distance between the left and right two guide parts (32) of gasket (3), and the front end of buffer flow channel (22) and the surface of right mould body (2) are smoothly transitioned. The buffer flow channel (22) is straight flow channel, the feed channel (23) is located at the middle position of the rear part of buffer flow channel (22), the width of buffer flow channel (22) along the width direction is consistent from back to front, the width of the front part of buffer flow channel (22) along the width direction is adapted to the distance between the left and right two guide parts (32) of gasket (3), and the front end of buffer flow channel (22) and the surface of right mould body (2) are smoothly transitioned.

5. The perovskite coating die of claim 1, wherein; The buffer flow channel (22) is a multi-flow channel structure, the feeding channel (23) is located in the middle of the right mold body (2), the buffer flow channel (22) comprises a first flow channel (221), a second flow channel (222), a third flow channel (223) and a transverse buffer groove (224) which are communicated with each other from back to front, the first flow channel (221) extends to left and right along the width direction of the right mold body (2) to realize one-to-two, the middle part of the second flow channel (222) is communicated with the first flow channel (221) and extends to left and right along the width direction of the right mold body (2) to realize one-to-two, the middle part of the third flow channel (223) is communicated with the second flow channel (222) and extends to left and right along the width direction of the right mold body (2) to realize one-to-two, the width of the transverse buffer groove (224) along the width direction is matched with the distance between the left and right two guide parts (32) of the gasket (3), and the rear end of the transverse buffer groove (224) is uniformly and spacedly communicated with eight third flow channels (223).

6. The perovskite coating die of claim 1, wherein; The buffer flow channel (22) comprises a first buffer groove (225) located on the inner side of the right mold body (2) and a second buffer groove (226) located on the front side of the first buffer groove (225), the left, middle and right three areas of the rear part of the first buffer groove (225) are all communicated with the feeding channel (23), and the width along the width direction of the first buffer groove (225) and the second buffer groove (226) is matched with the distance between the left and right two guide parts (32) of the gasket (3).

7. The perovskite coating die of claim 6, wherein; The depth and the front and rear width distance of the second buffer groove (226) are all smaller than those of the first buffer groove (225).

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