Ceramic coating die head and coating equipment

Abstract

The utility model discloses a ceramic coating die head and coating equipment. The ceramic coating die head comprises a first die head, a second die head and a fastening assembly, wherein the first die head and the second die head are matched with each other; the first die head and the second die head are both made of ceramic materials, a first connecting hole is formed in the first die head, a second connecting hole is formed in the second die head from top to bottom, a containing groove is formed in the second die head from bottom to top, and the first connecting hole, the second connecting hole and the containing groove are located on the same axis. The fastener penetrates through the first connecting hole and the second connecting hole, and one end of the fastener extends into the containing groove to be connected with the locking piece so as to be suitable for fixing the first die head and the second die head. According to the ceramic coating die head, through matched connection of the fastening piece and the locking piece, direct connection between the fastening piece and the second die head is avoided, so that concentrated stress of the fastening piece on the second die head is reduced, the connection strength of the structure is improved, the connection reliability of the first die head and the second die head is guaranteed, and the coating uniformity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coating machine equipment, in particular to a ceramic coating die head and coating equipment. Background Art

[0002] Slot extrusion coating is a process in the lithium battery manufacturing process. Its working principle is to extrude the slurry from the lip of the die at a certain flow rate and transfer it to the moving substrate surface. Compared with other coating methods, it has the advantages of fast coating speed, wide coating window and high precision.

[0003] The die heads are mostly made of metal. During the coating process, the slurry is extruded through the slit of the die head. The wear of the die head causes metal debris to enter the coating, thereby reducing battery performance and increasing battery safety risks.

[0004] In the prior art, the die head is made of ceramic material to prevent metal debris from entering the coating and affecting the battery. However, due to the inherent characteristics of the ceramic material, during the closing process of the upper and lower die heads, stress is concentrated at the connection, resulting in poor overall structural stability and poor coating uniformity. Utility Model Content

[0005] Therefore, the purpose of the present invention is to provide a ceramic coating die head and coating equipment to solve the problems of stress concentration at the connection of the ceramic die head in the prior art and poor stability of the overall structure, thereby affecting coating uniformity.

[0006] In order to solve the above technical problems, the technical solution of the utility model is as follows:

[0007] A ceramic coating die head, comprising at least two first and second die heads that cooperate with each other, a gasket is arranged between the first and second die heads, the first, second and second die heads enclose a coating slit, the first and second die heads are both made of ceramic material, the first die head is provided with a first connecting hole from top to bottom; the second die head is provided with a second connecting hole from top to bottom, the second die head is provided with a receiving groove from the lower end surface upward, the second connecting hole is connected with the receiving groove, and the first connecting hole, the second connecting hole and the receiving groove are located on the same axis;

[0008] It also includes a fastening assembly, which includes a locking piece and a fastener. The locking piece is fixed in the accommodating groove, and one end of the fastener is passed through the first connecting hole and the second connecting hole, and extends into the accommodating groove to connect with the locking piece, so as to be suitable for fixing the first die head and the second die head.

[0009] According to some embodiments of the present invention, the locking member is a waist-shaped nut, and the locking member is clearance-matched with the accommodating groove.

[0010] According to some embodiments of the utility model, the fastening assembly further includes a sealing block, the accommodating groove is a through groove, the sealing block is arranged below the locking member, and the lower end surface of the sealing block is flush with the lower end surface of the second die head.

[0011] According to some embodiments of the present invention, the sealing block is made of rubber or silicone.

[0012] According to some embodiments of the utility model, the ceramic coating die head also includes a mounting plate, a first locking piece and a second locking piece, the first die head and the second die head form a lip on one side for the slurry to flow out of the coating slit, the first die head is provided with a first mounting hole along the coating slit direction on the other side away from the lip, the second die head is provided with a second mounting hole along the coating slit direction on the other side away from the lip, the first locking piece is passed through the mounting plate and extends into the first mounting hole to be threadedly connected to the first die head, and the second locking piece is passed through the mounting plate and extends into the second mounting hole to be threadedly connected to the second die head.

[0013] According to some embodiments of the present utility model, a first transition piece is provided between the first locking piece and the first mounting hole, the outer periphery of the first transition piece is provided with an external thread to be threadedly connected to the first mounting hole, and the inner periphery of the first transition piece is provided with an internal thread to be threadedly connected to the first locking piece;

[0014] A second transition piece is provided between the second locking piece and the second mounting hole. The outer periphery of the second transition piece is provided with external threads for threaded connection with the second mounting hole. The inner periphery of the second transition piece is provided with internal threads for threaded connection with the second locking piece.

[0015] According to some embodiments of the present invention, the first locking member and the second locking member are both screws.

[0016] According to some embodiments of the utility model, the ceramic coating die also includes a third die, wherein the third die is located between the first die and the second die, a first gasket is provided between the first die and the third die, a second gasket is provided between the third die and the second die, the first die, the third die and the first gasket are combined to form a first coating slit, the third die, the second die and the second gasket are combined to form a second coating slit, and the fastening assembly is provided with at least two groups to respectively connect the first die and the third die, and the third die and the second die.

[0017] According to some embodiments of the present invention, the ceramic coating die head also includes an adjusting piece, the first die head is provided with a mounting through hole from top to bottom, the adjusting piece is passed through the mounting through hole to be suitable for adjusting the lateral height of the coating slit, and the adjusting piece is made of ceramic material.

[0018] The utility model also provides a coating device, comprising the ceramic coating die head.

[0019] The technical solution of the utility model has the following advantages:

[0020] The ceramic coating die head provided by the utility model has a first die head and a second die head, both of which are made of ceramic material. A first connecting hole is provided on the first die head, a second connecting hole is provided on the second die head from top to bottom, and a receiving groove is provided on the second die head from bottom to top. The first connecting hole, the second connecting hole and the receiving groove are located on the same axis. A locking member is fixedly installed in the receiving groove. A fastener is sequentially inserted into the first connecting hole and the second connecting hole, and one end extends into the receiving groove and is connected to the locking member, so as to be suitable for fixing the first die head and the second die head. The ceramic coating die head avoids direct connection between the fastener and the second die head through the matching connection of the fastener and the locking member, thereby reducing the concentrated stress of the fastener on the second die head, improving the connection strength of the structure, ensuring the connection reliability of the first die head and the second die head, and improving the coating uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic structural diagram of a ceramic coating die head provided in some embodiments of the utility model;

[0023] Figure 2 A cross-sectional view of a ceramic coating die head provided in some embodiments of the present invention;

[0024] Figure 3 Another cross-sectional view of a ceramic coating die head provided in some embodiments of the present invention;

[0025] Figure 4 It is a schematic structural diagram of a double-layer coating die head provided in some embodiments of the utility model;

[0026] Figure 5 It is a cross-sectional view of a double-layer coating die provided in some embodiments of the present invention.

[0027] Explanation of the accompanying drawings: 1. First die head; 2. Second die head; 3. Fastening assembly; 4. Adjusting member; 5. Mounting plate; 6. First locking member; 7. Second locking member; 8. Third die head; 31. Fastener; 32. Locking member; 33. Sealing block; 61. First transition member; 71. Second transition member. DETAILED DESCRIPTION

[0028] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention 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 therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] Reference Figure 1 and Figure 2As shown, in some embodiments of the present invention, a ceramic coating die is provided, comprising at least two first die heads 1 and second die heads 2 that cooperate with each other, a gasket is arranged between the first die head 1 and the second die head 2, the first die head 1, the second die head 2 and the gasket enclose a coating slit, the first die head 1 and the second die head 2 are both made of ceramic material, the first die head 1 is provided with a first connecting hole from top to bottom; the second die head 2 is provided with a second connecting hole from top to bottom, the second die head 2 is provided with a receiving groove from the lower end surface upward, the second connecting hole is connected to the receiving groove, and the first connecting hole, the second connecting hole and the receiving groove are located on the same axis;

[0033] It also includes a fastening assembly 3, which includes a locking piece 32 and a fastener 31. The locking piece 32 is fixed in the receiving groove, and one end of the fastener 31 is passed through the first connecting hole and the second connecting hole, and extends into the receiving groove to connect with the locking piece 32, so as to be suitable for fixing the first die head 1 and the second die head 2.

[0034] Specifically, the first die head 1 and the second die head 2 are both made of ceramic material, a first connection hole is provided on the first die head 1, a second connection hole is provided on the second die head 2 from top to bottom, a receiving groove is provided on the second die head 2 from bottom to top, the first connection hole, the second connection hole and the receiving groove are located on the same axis, a locking member 32 is fixedly installed in the receiving groove, a fastener 31 is sequentially passed through the first connection hole and the second connection hole, one end of which extends into the receiving groove and is connected with the locking member 32, so as to be suitable for fixing the first die head 1 and the second die head 2. The ceramic coating die head avoids direct connection between the fastener 31 and the second die head 2 through the matching connection of the fastener 31 and the locking member 32, thereby reducing the concentrated stress of the fastener 31 on the second die head 2, improving the connection strength of the structure, ensuring the connection reliability of the first die head 1 and the second die head 2, and improving the coating uniformity.

[0035] In some embodiments of the present invention, the locking member 32 is a waist-shaped nut, and the locking member 32 is clearance-matched with the receiving groove.

[0036] Specifically, the locking member 32 is a waist-shaped nut, and the locking member 32 is clearance-matched with the receiving groove, so that when the fastener 31 rotates, the locking member 32 can be fixedly installed in the receiving groove and will not rotate with the rotation of the fastener 31. The fastener 31 and the locking member 32 are threadedly connected, thereby fixing the first die head 1 and the second die head 2. It can be understood that the fastener 31 is a screw.

[0037] Reference Figure 2 As shown, in some embodiments of the present invention, the fastening assembly 3 also includes a sealing block 33, the accommodating groove is a through groove, the sealing block 33 is arranged below the locking member 32, and the lower end surface of the sealing block 33 is flush with the lower end surface of the second die head 2.

[0038] Specifically, the sealing block 33 is interference fit with the receiving groove. The sealing block 33 is arranged below the locking piece 32. On the one hand, it can prevent the locking piece 32 from falling from the second die head 2 due to gravity factors. On the other hand, it can seal the external material from entering the coating slit through the receiving groove and the second connecting hole, affecting the coating quality.

[0039] In some embodiments of the present invention, the sealing block 33 is made of rubber or silicone.

[0040] Specifically, the sealing block 33 is made of rubber or silicone material, and the rubber or silicone material is elastic. When the sealing block 33 is interference-fitted with the receiving groove, the installation and disassembly efficiency is improved, and the sealing performance is high.

[0041] Reference Figure 3 As shown, in some embodiments of the utility model, the ceramic coating die head also includes a mounting plate 5, a first locking member 6 and a second locking member 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 coating slit. The first die head 1 is provided with a first mounting hole along the coating slit direction on the other side away from the lip, and the second die head 2 is provided with a second mounting hole along the coating slit direction on the other side away from the lip. The first locking member 6 is penetrated through the mounting plate 5 and extends into the first mounting hole to be threadedly connected to the first die head 1. The second locking member 7 is penetrated through the mounting plate 5 and extends into the second mounting hole to be threadedly connected to the second die head 2.

[0042] Specifically, the installation plate 5 is arranged so that the first die head 1 and the second die head 2 are aligned to ensure that the lips are flush and the coating quality is guaranteed. The first die head 1 and the second die head 2 are locked and fixed respectively by the first locking member 6 and the second locking member 7.

[0043] It can be understood that a first mounting hole is opened on the other side of the first die head 1 away from the lip along the direction of the coating slit, the first locking member 6 is penetrated through the mounting plate 5 and extends into the first mounting hole and is threadedly connected to the first die head 1, and a second mounting hole is opened on the other side of the second die head 2 away from the lip along the direction of the coating slit, the second locking member 7 is penetrated through the mounting plate 5 and extends into the second mounting hole and is threadedly connected to the second die head 2, so as to be suitable for aligning and fixing the first die head 1 and the second die head 2.

[0044] In some embodiments of the present invention, a first transition piece 61 is provided between the first locking piece 6 and the first mounting hole, the outer periphery of the first transition piece 61 is provided with an external thread to be threadedly connected to the first mounting hole, and the inner periphery of the first transition piece 61 is provided with an internal thread to be threadedly connected to the first locking piece 6;

[0045] A second transition piece 71 is provided between the second locking piece 7 and the second mounting hole. The outer periphery of the second transition piece 71 is provided with external threads for threaded connection with the second mounting hole. The inner periphery of the second transition piece 71 is provided with internal threads for threaded connection with the second locking piece 7 .

[0046] In some embodiments of the present invention, the first locking member 6 and the second locking member 7 are both screws.

[0047] Specifically, in order to reduce stress concentration, it is necessary to increase the aperture of the first mounting hole and the second mounting hole and the pitch of the internal thread. In order to make the first locking member 6 and the second locking member 7 have strong versatility and applicability, a first transition member 61 is arranged between the first mounting hole and the first locking member 6, and a second transition member 71 is arranged between the second mounting hole and the second locking member 7. The outer periphery of the first transition member 61 is provided with an external thread to cooperate with the internal thread of the first mounting hole, and the inner periphery of the first transition member 61 is provided with an internal thread to cooperate with the external thread of the first locking member 6, so as to realize the diameter reduction processing of the first locking member 6 and improve the versatility of the first locking member 6.

[0048] Similarly, the second transition piece 71 has the same structure as the first transition piece 61 , and an external thread is provided on the outer periphery of the second transition piece 71 to be suitable for mating and connecting with the internal thread of the second mounting hole, and an internal thread is provided on the inner periphery of the second transition piece 71 to be suitable for mating and connecting with the external thread of the second locking piece 7 .

[0049] It can be understood that the setting of the first transition piece 61 and the second transition piece 71 can not only improve the versatility of the first locking piece 6 and the second locking piece 7, but also reduce the stress concentration of the first die 1 and the second die 2, and extend the service life of the first die 1 and the second die 2.

[0050] Reference Figure 4 and Figure 5 As shown, in some embodiments of the utility model, the ceramic coating die also includes a third die 8, the third die 8 is located between the first die 1 and the second die 2, a first gasket is provided between the first die 1 and the third die 8, a second gasket is provided between the third die 8 and the second die 2, the first die 1, the third die 8 and the first gasket are enclosed to form a first coating slit, the third die 8, the second die 2 and the second gasket are enclosed to form a second coating slit, and the fastening assembly 3 is provided with at least two groups to respectively connect the first die 1 and the third die 8, and the third die 8 and the second die 2.

[0051] Specifically, the ceramic coating die can also be a double-layer coating die or a multi-layer coating die, wherein the three-layer coating die also includes a third die 8, and the third die 8 is arranged between the first die 1 and the second die 2. At this time, the fastening assembly 3 is provided with at least two groups to respectively connect the first die 1 and the third die 8, and the third die 8 and the second die 2 to ensure structural strength.

[0052] It can be understood that the first coating slit of the double-layer coating die head can be an inclined slit, and the second coating slit can be a horizontal slit.

[0053] In some embodiments of the present invention, the ceramic coating die head further includes an adjusting member 4. The first die head 1 is provided with a mounting through hole from top to bottom. The adjusting member 4 is passed through the mounting through hole to be suitable for adjusting the lateral height of the coating slit. The adjusting member 4 is made of ceramic material.

[0054] Specifically, the adjusting member 4 is made of ceramic material, which further prevents metal powder from entering the coating and ensures the coating quality.

[0055] The utility model also provides a coating device, which comprises a ceramic coating die head.

[0056] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled 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 methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A ceramic coating die head, comprising at least two mutually matching first die heads (1) and second die heads (2), a gasket is arranged between the first die head (1) and the second die head (2), the first die head (1), the second die head (2) and the gasket enclose a coating slit, characterized in that: The first die head (1) and the second die head (2) are both made of ceramic material; the first die head (1) is provided with a first connection hole from top to bottom; the second die head (2) is provided with a second connection hole from top to bottom; the second die head (2) is provided with a receiving groove upward from the lower end surface; the second connection hole is connected to the receiving groove; the first connection hole, the second connection hole and the receiving groove are located on the same axis; The invention also comprises a fastening assembly (3), wherein the fastening assembly (3) comprises a locking member (32) and a fastening member (31), wherein the locking member (32) is fixedly arranged in the receiving groove, and one end of the fastening member (31) is passed through the first connecting hole and the second connecting hole and extends into the receiving groove to be connected with the locking member (32), so as to be suitable for fixing the first die head (1) and the second die head (2).

2. The ceramic coating die head according to claim 1, characterized in that: The locking piece (32) is a waist-shaped nut, and the locking piece (32) is clearance-matched with the accommodating groove.

3. The ceramic coating die head according to claim 1 or 2, characterized in that: The fastening assembly (3) further comprises a sealing block (33), the receiving groove being a through groove, the sealing block (33) being arranged below the locking member (32), and the lower end surface of the sealing block (33) being flush with the lower end surface of the second die head (2).

4. The ceramic coating die head according to claim 3, characterized in that: The sealing block (33) is made of rubber or silicone material.

5. The ceramic coating die head according to claim 1, characterized in that: The invention also comprises a mounting plate (5), a first locking member (6) and a second locking member (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 coating slit; the first die head (1) is provided with a first mounting hole along the coating slit direction on the other side away from the lip; the second die head (2) is provided with a second mounting hole along the coating slit direction on the other side away from the lip; the first locking member (6) is passed through the mounting plate (5) and extends into the first mounting hole to be threadedly connected to the first die head (1); the second locking member (7) is passed through the mounting plate (5) and extends into the second mounting hole to be threadedly connected to the second die head (2).

6. The ceramic coating die head according to claim 5, characterized in that: A first transition piece (61) is provided between the first locking piece (6) and the first mounting hole, the outer periphery of the first transition piece (61) is provided with an external thread for threaded connection with the first mounting hole, and the inner periphery of the first transition piece (61) is provided with an internal thread for threaded connection with the first locking piece (6); A second transition piece (71) is provided between the second locking piece (7) and the second mounting hole, the outer periphery of the second transition piece (71) is provided with an external thread for threaded connection with the second mounting hole, and the inner periphery of the second transition piece (71) is provided with an internal thread for threaded connection with the second locking piece (7).

7. The ceramic coating die head according to claim 5 or 6, characterized in that: The first locking member (6) and the second locking member (7) are both screws.

8. The ceramic coating die head according to claim 1, characterized in that: The invention also comprises a third die head (8), wherein the third die head (8) is located between the first die head (1) and the second die head (2), a first gasket is provided between the first die head (1) and the third die head (8), a second gasket is provided between the third die head (8) and the second die head (2), the first die head (1), the third die head (8) and the first gasket are enclosed to form a first coating slit, and the third die head (8), the second die head (2) and the second gasket are enclosed to form a second coating slit, and the fastening assembly (3) is provided with at least two groups to respectively connect the first die head (1) and the third die head (8), and the third die head (8) and the second die head (2).

9. The ceramic coating die head according to claim 1, characterized in that: It also includes an adjusting member (4). The first die head (1) is provided with a mounting through hole from top to bottom. The adjusting member (4) is inserted into the mounting through hole to be suitable for adjusting the lateral height of the coating slit. The adjusting member (4) is made of ceramic material.

10. A coating device, characterized in that: It comprises the ceramic coating die head as described in any one of claims 1 to 9.

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