Coating die head and coating device

Abstract

The utility model discloses a coating die head and a coating device. The coating die head comprises a first die head, a second die head and a first adjusting assembly, the first die head and the second die head are enclosed to form a first coating slit, a lip is formed on one side of each of the first die head and the second die head, so that slurry flows out of the first coating slit, the first adjusting assembly is detachably arranged at the lip, the first adjusting assembly is provided with a second coating slit, the first coating slit is communicated with the second coating slit through a slow flow area, and the second coating slit is communicated with the second coating slit through a slow flow area. The slurry enters the second coating slit through the first coating slit, the slow flow area and the lip, and the slow flow area buffers the slurry, so that the uniformity of the slurry is improved. The first adjusting assembly is detachably arranged at the lip, and the width of the second coating slit is adjusted by replacing the first adjusting assembly, so that the purpose of adjusting the coating thickness is achieved. According to the coating die head, the coating thickness is adjusted, meanwhile, the coating uniformity is guaranteed, and the coating quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating equipment, and particularly relates to a coating die head and a coating device. Background Art

[0002] As a precise wet coating technology, the working principle of slit extrusion coating is that the slurry is extruded and ejected along the slit of the coating die head under a certain pressure and flow rate and then transferred to the substrate. Compared with other coating methods, it has many advantages, such as high coating speed, high precision, and uniform wet thickness; the coating system is closed, which can prevent pollutants from entering during the coating process, with high slurry utilization rate, stable slurry properties, capable of multi-layer coating simultaneously, and can adapt to different slurry viscosities and solid content ranges.

[0003] In the prior art, the coating thickness is determined by the lip of the die head body or the slit of the flow stabilization zone. The disadvantage of this design is that the coating thickness cannot be changed, and this design may cause uneven coating due to excessive or uneven cavity pressure during the coating process. Summary of the Utility Model

[0004] Therefore, the purpose of the utility model is to provide a coating die head and a coating device to solve the problems of non-adjustable coating thickness and poor coating uniformity in the prior art.

[0005] To solve the above technical problems, the technical solution of the utility model is as follows:

[0006] A coating die head includes: a first die head, a second die head, and a first adjusting component. The first die head and the second die head enclose to form a first coating slit, and the first die head and the second die head form a lip on one side for the slurry to flow out of the first coating slit; the first adjusting component is detachably arranged at the lip, and the first adjusting component is provided with a second coating slit, and the second coating slit is communicated with the first coating slit, and the slurry passes through the first coating slit and the second coating slit for coating; along the vertical direction, the width of the second coating slit is smaller than the width of the first coating slit, and a flow stabilization zone is formed between the first adjusting component and the lip, and the second coating slit, the first coating slit and the flow stabilization zone are communicated.

[0007] According to some embodiments of the utility model, the cross-sectional area of the flow stabilization zone gradually decreases from back to front and is triangular.

[0008] According to some embodiments of the utility model, the lip includes a first lip formed on the first die head and a second lip formed on the second die head. The first adjusting component includes a first adjusting part arranged on the first lip and a second adjusting part arranged on the second lip. The first adjusting part and the second adjusting part are clamped to enclose and form the second coating slit.

[0009] According to some embodiments of the present utility model, a first mounting groove is provided on the first lip, a second mounting groove is provided on the second lip, and the first adjusting assembly further includes a first fastener for fixing the first adjusting member in the first mounting groove, and a second fastener for fixing the second adjusting member in the second mounting groove.

[0010] According to some embodiments of the present utility model, the coating die head further includes a second adjusting assembly provided on the first die head. The second adjusting assembly includes an adjusting block, and the adjusting block is in driving connection with the first die head to drive the first die head to move so as to adjust the opening width of the lip.

[0011] According to some embodiments of the present utility model, the second adjusting assembly includes a mounting plate provided on the first die head, an actuator fixedly mounted on the mounting plate, and a transmission member connecting the actuator and the adjusting block. The actuator drives the transmission member to drive the adjusting block to move along the axial direction of the transmission member so as to drive the first die head to move.

[0012] According to some embodiments of the present utility model, the coating die head further includes heating elements arranged in the first die head and / or the second die head in the front-back direction. There are a plurality of heating elements and they are evenly spaced in the left-right direction.

[0013] According to some embodiments of the present utility model, the coating die head further includes a controller and a temperature sensor. The heating elements and the temperature sensor are both in communication connection with the controller. The temperature sensor is arranged in the first die head and the second die head in the vertical direction. The temperature sensor is adapted to monitor the temperatures of the first die head and the second die head and feedback them to the controller, and the controller controls the heating elements to start or stop.

[0014] According to some embodiments of the present utility model, in the horizontal direction, the first coating slit includes a feed channel, a flow splitting area, and a flow stabilizing area that are sequentially communicated from the feed port to the lip. The flow stabilizing area is communicated with the second coating slit.

[0015] A coating device includes the coating die head.

[0016] The technical solution of the present utility model has the following advantages:

[0017] The coating die head provided by the present utility model has a first die head and a second die head that enclose to form a first coating slit. The first die head and the second die head form a lip at one side for the slurry to flow out of the first coating slit. The first adjusting component is detachably arranged at the lip. The first adjusting component sets a second coating slit. The first coating slit is communicated with the second coating slit through a buffer zone. The slurry passes through the first coating slit, the buffer zone, the lip and enters the second coating slit. The buffer zone buffers the slurry to improve the uniformity of the slurry. The first adjusting component is detachably arranged at the lip. By replacing the first adjusting component, the width of the second coating slit can be adjusted to achieve the purpose of adjusting the coating thickness. While achieving the adjustment of the coating thickness, this coating die head ensures the uniformity of coating and improves the coating quality. Description of the Drawings

[0018] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Is an axonometric view of the coating die head provided in some embodiments of the present utility model;

[0020] Figure 2 Is a rear view of the coating die head provided in some embodiments of the present utility model;

[0021] Figure 3 Is Figure 2 The cross-sectional view taken along the line A - A shown in;

[0022] Figure 4 Is Figure 3 The partial schematic view at position A shown in;

[0023] Figure 5 Is a left view of the coating die head provided in some embodiments of the present utility model.

[0024] Explanation of the reference numerals: 1, first die head; 2, second die head; 3, first adjusting component; 4, second adjusting component; 5, heating element; 6, temperature sensor; 7, first coating slit; 8, buffer zone; 31, first adjusting member; 32, second adjusting member; 33, second coating slit; 34, first fastener; 35, second fastener; 41, adjusting block; 42, transmission member; 43, executing member; 44, mounting plate. Detailed Embodiments

[0025] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts belong to the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] Refer to Figures 1 to 5 As shown, in some embodiments of the present utility model, a coating die head is provided, including: a first die head 1, a second die head 2, and a first adjustment assembly 3. The first die head 1 and the second die head 2 enclose to form a first coating slit 7. The first die head 1 and the second die head 2 form a lip at one side for the slurry to flow out of the first coating slit 7. The first adjustment assembly 3 is detachably arranged at the lip, and the first adjustment assembly 3 is provided with a second coating slit 33. The second coating slit 33 is communicated with the first coating slit 7, and the slurry passes through the first coating slit 7 and the second coating slit 33 for coating. Along the vertical direction, the width of the second coating slit 33 is smaller than the width of the first coating slit 7. A slow flow area 8 is formed between the first adjustment assembly 3 and the lip. The second coating slit 33, the first coating slit 7, and the slow flow area 8 are communicated with each other.

[0030] Specifically, the first die head 1 and the second die head 2 enclose to form a first coating slit 7. The first die head 1 and the second die head 2 form a lip on one side for the slurry to flow out of the first coating slit 7. The first adjusting assembly 3 is detachably arranged at the lip. The first adjusting assembly 3 is provided with a second coating slit 33. The first coating slit 7 is communicated with the second coating slit 33 through a flow buffer zone 8. The slurry enters the second coating slit 33 through the first coating slit 7, the flow buffer zone 8 and the lip. The flow buffer zone 8 buffers the slurry to improve the uniformity of the slurry. The first adjusting assembly 3 is detachably arranged at the lip. By replacing the first adjusting assembly 3, the width of the second coating slit 33 can be adjusted to achieve the purpose of adjusting the coating thickness. While achieving the adjustment of the coating thickness, this coating die head ensures the uniformity of coating and improves the coating quality.

[0031] Specifically, the vertical direction is consistent with the up-and-down direction. The width of the second coating slit 33 is smaller than that of the first coating slit 7. When the slurry enters the second coating slit 33 from the first coating slit 7 through the lip, due to the decrease in width and the reduction of the cross-sectional area, the flow velocity of the slurry increases after being uniform at the flow buffer zone 8, enabling the slurry to flow out quickly and uniformly, thus improving the coating uniformity.

[0032] It can be understood that the first die head 1 and the second die head 2 form a feed port on the other side. The slurry enters the first coating slit 7 from the feed port and enters the second coating slit 33 through the flow buffer zone 8.

[0033] Refer to Figure 4 As shown, in some embodiments of the present invention, the cross-sectional area of the flow buffer zone 8 gradually decreases from back to front and is triangular.

[0034] It can be understood that since the width change between the second coating slit 33 and the first coating slit 7 is relatively large, in order to avoid the formation of turbulent flow of the slurry between the first adjusting assembly 3 and the lip, an installation gap is provided between the first adjusting assembly 3 and the first die head 1 and the second die head 2, so as to form a flow buffer zone 8 between the first adjusting assembly 3 and the lip. The longitudinal cross-section of this flow buffer zone 8 is triangular, so that the cross-sectional area decreases from the first coating slit 7 to the coating flow buffer cavity, reducing the impact force of the slurry, ensuring the uniform flow of the slurry, and improving the coating uniformity.

[0035] In some embodiments of the present invention, the lip includes a first lip formed on the first die head 1 and a second lip formed on the second die head 2. The first adjusting assembly 3 includes a first adjusting member 31 arranged on the first lip and a second adjusting member 32 arranged on the second lip. The first adjusting member 31 and the second adjusting member 32 sandwich and enclose to form the second coating slit 33.

[0036] Refer to Figure 3As shown, in some embodiments of the present utility model, a first installation groove is provided on the first lip, a second installation groove is provided on the second lip, the first adjustment assembly 3 further includes a first fastener 34 for fixing the first adjustment member 31 in the first installation groove, and a second fastener 35 for fixing the second adjustment member 32 in the second installation groove.

[0037] Specifically, a first installation groove is formed on the first lip, a second installation groove is formed on the second lip. Both the first installation groove and the second installation groove are blind grooves. The first adjustment member 31 is arranged in the first installation groove, and the second adjustment member 32 is arranged in the second installation groove. A first fixing hole is formed in the first installation groove, and a second fixing hole is formed in the second installation groove. The first fastener 34 passes through the first adjustment member 31 and one end extends into the first fixing hole to fixedly connect the first adjustment member 31 with the first die head 1. The second fastener 35 passes through the second adjustment member 32 and one end extends into the second fixing hole to fixedly connect the second adjustment member 32 with the second die head 2. When it is necessary to adjust the coating thickness, by replacing the first adjustment member 31 and the second adjustment member 32, the width of the second coating slit 33 is adjusted, thereby realizing the adjustment of the coating thickness.

[0038] The first adjustment assembly 3 is simple to disassemble, convenient to replace, can quickly realize the adjustment of the coating thickness, has high versatility and strong adaptability.

[0039] Refer to Figure 2 and Figure 4 As shown, in some embodiments of the present utility model, the coating die head further includes a second adjustment assembly 4 arranged on the first die head 1. The second adjustment assembly 4 includes an adjustment block 41. The adjustment block 41 is in transmission connection with the first die head 1 and drives the first die head 1 to move to adapt to adjust the opening width of the lip.

[0040] Specifically, the width of the lip is adjusted through the second adjustment assembly 4 so that the slurry smoothly flows through the lip from the first coating slit 7 and enters the second coating slit 33. And during long-term use, the position of the first lip of the first die head 1 will sink, resulting in a decrease in the width of the first coating slit 7, causing the slurry to flow out unevenly during coating. The position of the first die head 1 is adjusted in real time through the second adjustment assembly 4 to ensure the opening width of the lip and improve the coating uniformity.

[0041] Refer to Figure 3 and Figure 4 As shown, in some embodiments of the present utility model, the second adjustment assembly 4 includes a mounting plate 44 arranged on the first die head 1, an actuator 43 fixedly mounted on the mounting plate 44, and a transmission member 42 connecting the actuator 43 and the adjustment block 41. The actuator 43 drives the transmission member 42 to drive the adjustment block 41 to move along the axial direction of the transmission member 42 to drive the first die head 1 to move.

[0042] Specifically, the transmission member 42 is a differential screw. One end of the transmission member 42 is connected to the adjusting member, and the other end of the transmission member 42 is drivingly connected to the actuator 43. The actuator 43 drives the transmission member 42 to move along its axial direction. An avoidance groove is formed in the first die head 1, and the adjusting member is placed in the avoidance groove. The transmission member 42 drives the adjusting member to move in the avoidance groove to pull the first die head 1 to move along the axial direction of the transmission member 42 to adjust the opening width of the lip.

[0043] In some embodiments of the present utility model, the coating die head further includes a heating member 5 penetrating through the first die head 1 and / or the second die head 2 in the front-rear direction. A plurality of heating members 5 are provided and are evenly spaced in the left-right direction.

[0044] Specifically, the heating member 5 penetrates through the first die head 1 and the second die head 2 in the front-rear direction, and a plurality of heating members 5 are arranged at uniform intervals in the left-right direction. Thus, uniform heating of the die head is achieved, so that the slurry in the first coating slit 7 remains fluid, avoiding solidification due to temperature reduction and affecting the coating quality.

[0045] In some embodiments of the present utility model, the coating die head further includes a controller and a temperature sensor 6. The heating member 5 and the temperature sensor 6 are both communicatively connected to the controller. The temperature sensor 6 penetrates through the first die head 1 and the second die head 2 in the vertical direction. The temperature sensor 6 is adapted to monitor the temperature of the first die head 1 and the second die head 2 and feedback it to the controller, and the controller controls the start and stop of the heating member 5.

[0046] Specifically, the heating member 5 and the temperature sensor 6 are both communicatively connected to the controller. The temperature sensor 6 is adapted to detect the temperature parameters of the first die head 1 and the second die head 2 and feedback them to the controller in real time. The controller receives the temperature parameters and adjusts the start and stop of the heating member 5 according to the preset temperature. The temperature sensor 6 realizes closed-loop temperature control to ensure that the first die head 1 and the second die head 2 are within the preset temperature range, so as to ensure the flow performance of the slurry and improve the coating quality.

[0047] It can be understood that a plurality of temperature sensors 6 are provided and are evenly spaced in the left-right direction of the first die head 1 and the second die head 2 to ensure the uniformity of temperature detection.

[0048] In some embodiments of the present utility model, in the horizontal direction, the first coating slit 7 includes a feed channel, a flow splitting area, and a flow stabilizing area that are sequentially connected and communicated from the feed port to the lip. The flow stabilizing area is communicated with the second coating slit 33.

[0049] A coating device includes a coating die head. The coating die head provided by this coating device can adjust the coating thickness and ensure the uniformity of coating while ensuring the quality of the coating finished product.

[0050] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the creation of the present utility model.

Claims

1. A coating die, characterized in that, Comprising: A first die head (1) and a second die head (2), the first die head (1) and the second die head (2) enclose to form a first coating slit (7), and the first die head (1) and the second die head (2) form a lip at one side for the slurry to flow out of the first coating slit (7); A first adjusting assembly (3), the first adjusting assembly (3) is detachably arranged at the lip, and the first adjusting assembly (3) is provided with a second coating slit (33), the second coating slit (33) communicates with the first coating slit (7), and the slurry is coated through the first coating slit (7) and the second coating slit (33); In the vertical direction, the width of the second coating slit (33) is smaller than the width of the first coating slit (7), a slow flow area (8) is formed between the first adjusting assembly (3) and the lip, and the second coating slit (33), the first coating slit (7) and the slow flow area (8) communicate with each other.

2. The coating die according to claim 1, characterized in that, The cross-section of the slow flow area (8) gradually decreases from back to front and is triangular.

3. The coating die according to claim 1, characterized in that, The lip includes a first lip formed on the first die head (1) and a second lip formed on the second die head (2), the first adjusting assembly (3) includes a first adjusting member (31) arranged on the first lip and a second adjusting member (32) arranged on the second lip, and the first adjusting member (31) and the second adjusting member (32) are clamped to enclose the second coating slit (33).

4. The coating die according to claim 3, characterized in that, A first mounting groove is provided on the first lip, a second mounting groove is provided on the second lip, the first adjusting assembly (3) further includes a first fastener (34) for fixing the first adjusting member (31) in the first mounting groove, and a second fastener (35) for fixing the second adjusting member (32) in the second mounting groove.

5. The coating die according to claim 1, characterized in that, It further includes a second adjusting assembly (4) arranged on the first die head (1), the second adjusting assembly (4) includes an adjusting block (41), the adjusting block (41) is in transmission connection with the first die head (1), and drives the first die head (1) to move to adjust the opening width of the lip.

6. The coating die according to claim 5, wherein, The second adjusting assembly (4) includes a mounting plate (44) arranged on the first die head (1), an actuator (43) fixedly mounted on the mounting plate (44), and a transmission member (42) connecting the actuator (43) and the adjusting block (41), the actuator (43) drives the transmission member (42) to drive the adjusting block (41) to move along the axial direction of the transmission member (42) to drive the first die head (1) to move.

7. The coating die according to claim 1, wherein, It further includes a heating member (5) penetrating through the first die head (1) and / or the second die head (2) in the front-rear direction, and there are multiple heating members (5) evenly spaced in the left-right direction.

8. The coating die according to claim 7, wherein It further includes a controller and a temperature sensor (6). The heating element (5) and the temperature sensor (6) are both communicatively connected to the controller. The temperature sensor (6) is vertically disposed through the first die head (1) and the second die head (2). The temperature sensor (6) is adapted to monitor the temperatures of the first die head (1) and the second die head (2) and feedback them to the controller, and the controller controls the heating element (5) to start or stop.

9. The coating die according to claim 7, characterized in that, In the horizontal direction, the first coating slit (7) includes a feed flow channel, a flow splitting area, and a flow stabilizing area that are sequentially connected and communicated from the feed inlet to the lip. The flow stabilizing area is communicated with the second coating slit (33).

10. A coating device, characterized in that, It includes the coating die head according to any one of claims 1-9.

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