Casting equipment for manufacturing MLCC

Abstract

The utility model provides casting equipment for manufacturing an MLCC (Multiplayer Ceramic Chip Capacitor). A part of the first surface of the PET film layer abuts against the casting leading-in roller shaft and the casting leading-out roller shaft, the casting head is arranged between the casting leading-in roller shaft and the casting leading-out roller shaft, the casting head is arranged below the PET film layer and faces the second surface, and ceramic slurry extruded by the casting head can be attached to the second surface to form a ceramic diaphragm. In the process of forming the ceramic membrane, more organic matters in the ceramic slurry are gathered on the surface, away from the PET membrane layer, of the ceramic membrane instead of the surface, in contact with the PET membrane layer, of the ceramic membrane under the influence of gravity, so that the surface, away from the PET membrane layer, of the prepared ceramic membrane is higher in corrosion resistance, the overall compactness of the ceramic membrane is more uniform, and the service life of the ceramic membrane is prolonged. When the conductive slurry is printed on the ceramic diaphragm, corrosion can be reduced, and the yield of the ceramic diaphragm is improved.

Description

Technical Field

[0001] This application relates to the field of manufacturing multilayer ceramic capacitors, and specifically relates to a casting device for manufacturing MLCCs. Background Art

[0002] Multilayer ceramic capacitors (MLCCs), also known as surface mount capacitors, have the characteristics of small size, large capacitance, and high stability. During the manufacturing process of MLCCs, ceramic slurry is coated on a PET film through the injection port of a casting device to form a ceramic film with a certain thickness and strength. During the forming process of the ceramic film, the organic matter in the ceramic slurry has a certain fluidity. Under the influence of gravity, there is more organic matter on the side of the ceramic film close to the PET film and less organic matter on the side far from the PET film. When printing conductive slurry on the ceramic film, since the solvent in the conductive slurry has a certain dissolving effect on the ceramic film, the side with less organic matter is corroded more severely, resulting in poor thickness uniformity of the ceramic film and a decrease in the yield of the manufactured ceramic film. Summary of the Utility Model

[0003] This application provides a casting device for manufacturing MLCCs, aiming to improve the problem of poor corrosion resistance of ceramic films and the decrease in the yield of ceramic films.

[0004] In a first aspect, this application provides a casting device for manufacturing MLCCs. The casting device includes a pay-off section, a casting section, a drying section, a take-up section, and a PET film layer. The PET film layer is sequentially arranged on the pay-off section, the casting section, the drying section, and the take-up section. The PET film layer has a first surface and a second surface arranged opposite to each other. The pay-off section includes a pay-off roller shaft, and a part of the first surface abuts against the pay-off roller shaft. The casting section includes a casting inlet roller shaft, a casting outlet roller shaft, and a casting head. A part of the first surface abuts against the casting inlet roller shaft and the casting outlet roller shaft. The casting head is arranged between the casting inlet roller shaft and the casting outlet roller shaft, and the casting head is arranged below the PET film layer and faces the second surface. The drying section includes a first tension suction roller, a second tension suction roller, and a drying device. A part of the first surface abuts against the first tension suction roller and the second tension suction roller. The drying device is arranged between the first tension suction roller and the second tension suction roller. The take-up section includes a take-up roller shaft, and a part of the first surface abuts against the take-up roller shaft. The take-up roller shaft is used to wind up the cast PET film layer.

[0005] In some embodiments, the unwinding part further includes a deviation rectifying device, which is arranged between the unwinding roller shaft and the casting inlet roller shaft. The deviation rectifying device includes a first roller shaft, a second roller shaft and a deviation rectifying member. The deviation rectifying member is arranged between the first roller shaft and the second roller shaft. The PET film layer is sequentially arranged on the unwinding roller shaft, the first roller shaft, the second roller shaft and the deviation rectifying member. Wherein, a part of the first surface abuts against the unwinding roller shaft and the first roller shaft, and a part of the second surface abuts against the second roller shaft.

[0006] In some embodiments, the casting head is perpendicular to the PET film layer between the casting inlet roller shaft and the casting outlet roller shaft.

[0007] In some embodiments, the drying device includes a first temperature zone, a second temperature zone and a third temperature zone. The PET film layer is sequentially arranged in the first temperature zone, the second temperature zone and the third temperature zone. Wherein, the first temperature zone is used to provide a temperature of T1, the second temperature zone is used to provide a temperature of T2, and the third temperature zone is used to provide a temperature of T3, and T1 < T2 < T3.

[0008] In some embodiments, the PET film layer is sequentially arranged on the first tension suction roller, the drying device and the second tension suction roller. A part of the first surface abuts against the first tension suction roller and the second tension suction roller, and a part of the second surface faces the drying device.

[0009] In some embodiments, the casting device further includes a first adjustment part, which is arranged between the drying part and the casting part. The first adjustment part includes a third tension suction roller and a fourth tension suction roller. The PET film layer is sequentially arranged on the casting outlet roller, the third tension suction roller and the fourth tension suction roller. Wherein, a part of the first surface abuts against the casting outlet roller, the third tension suction roller and the fourth tension suction roller.

[0010] In some embodiments, the first adjustment part further includes a first guiding roller, which is arranged between the casting outlet roller shaft and the third tension suction roller. The PET film layer is sequentially arranged on the casting outlet roller, the first guiding roller and the third tension suction roller. A part of the first surface abuts against the casting outlet roller, the first guiding roller and the third tension suction roller.

[0011] In some embodiments, the casting device further includes a second adjustment part, which is arranged between the drying part and the winding part. The second adjustment part includes a second guiding roller. The PET film layer is sequentially arranged on the second tension suction roller, the second guiding roller and the winding roller shaft. The first surface abuts against the second tension suction roller and the winding roller shaft, and the second surface abuts against the second guiding roller.

[0012] In some embodiments, the second adjusting part further includes a fifth sucking roller and a sixth tension sucking roller, and the PET film layer is sequentially disposed on the second guiding roller, the fifth sucking roller and the sixth tension sucking roller. The second surface abuts against the second guiding roller, the fifth sucking roller and the sixth tension sucking roller.

[0013] In some embodiments, the winding part further includes a third roller shaft and a fourth roller shaft. The third roller shaft and the fourth roller shaft are both disposed between the winding roller shaft and the sixth tension sucking roller. The PET film layer is sequentially disposed on the sixth tension sucking roller, the third roller shaft and the fourth roller shaft. The first surface abuts against the third roller shaft, and the second surface abuts against the fourth roller shaft and the sixth tension sucking roller.

[0014] Different from the related art, the embodiment of the present application provides a casting device for manufacturing MLCCs. A part of the first surface of the PET film layer abuts against the casting inlet roller shaft and the casting outlet roller shaft. The casting head is disposed between the casting inlet roller shaft and the casting outlet roller shaft. The casting head is disposed below the PET film layer and faces the second surface. The ceramic slurry extruded by the casting head can adhere to the second surface to form a ceramic film. During the process of forming the ceramic film, due to the influence of gravity, more organic matter in the ceramic slurry aggregates on the surface of the ceramic film away from the PET film layer, rather than on the surface where the ceramic film contacts the PET film layer. This makes the surface of the prepared ceramic film away from the PET film layer have stronger corrosion resistance, better uniformity in the overall density of the ceramic film, and more uniform thickness. When printing conductive slurry on the ceramic film, erosion can be reduced, and the yield rate of the ceramic film is improved. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of some casting devices provided by the embodiment of the present application;

[0016] Figure 2 is a schematic structural diagram of some ceramic films provided by the embodiment of the present application;

[0017] Figure 3 is a schematic structural diagram of some PET film layers provided by the embodiment of the present application;

[0018] Figure 4 is a schematic structural diagram of some ceramic films cast on the second surface;

[0019] Figure 5 is a schematic structural diagram of some casting devices provided by the embodiment of the present application.

[0020] Reference Signs in the Drawings:

[0021] 100, casting device;

[0022] 10. Unwinding section; 11. Unwinding roller; 12. Deviation rectifying device; 121. First roller; 122. Second roller; 123. Deviation rectifying part

[0023] 20. Casting section; 21. Casting inlet roller; 22. Casting outlet roller; 23. Casting head; 24. Gear pump; 25. Stirring tank

[0024] 30. Drying section; 31. First tension suction roller; 32. Second tension suction roller; 33. Drying device; 331. First temperature zone; 332. Second temperature zone; 333. Third temperature zone

[0025] 40. Winding section; 41. Winding roller; 42. Third roller; 43. Fourth roller

[0026] 50. PET film layer; 51. First surface; 52. Second surface

[0027] 60. First adjustment section; 61. Third tension suction roller; 62. Fourth tension suction roller; 63. First guide roller

[0028] 70. Second adjustment section; 71. Second guide roller; 72. Fifth suction roller; 73. Sixth tension suction roller

[0029] 80. Ceramic diaphragm

[0030] X. First direction Detailed implementation manners

[0031] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0032] In the description of the embodiments of the present application, technical terms such as "first", "second", etc. are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order or primary-secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "several" is more than one, unless otherwise clearly and specifically defined.

[0033] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after.

[0034] References to "embodiments" in this specification mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0035] In a first aspect, an embodiment of the present application provides a casting device 100 for manufacturing MLCC. Please refer to Figure 1 , the casting device 100 includes an unwinding section 10, a casting section 20, a drying section 30, a winding section 40, and a PET film layer 50. The PET film layer 50 is sequentially disposed on the unwinding section 10, the casting section 20, the drying section 30, and the winding section 40. The PET film layer 50 is sleeved on the unwinding section 10 so as to unwind the PET film layer 50 to the casting section 20. The casting section 20 can coat ceramic slurry on the PET film layer 50. Combining Figure 2 , the PET film layer 50 coated with ceramic slurry moves to the drying section 30 for drying to form a ceramic film sheet 80. The ceramic film sheet 80 moves to the winding section 40 for winding to form a reel.

[0036] Regarding the above PET film layer 50, please refer to Figure 1 and Figure 3 , the PET film layer 50 is a thin film layer prepared from polyethylene terephthalate (PET). The PET film layer 50 is a thermoplastic polyester material with good mechanical properties, high transparency, strong chemical stability, low water absorption, etc. The PET film layer 50 is widely used in multiple fields, such as the packaging industry, the electronic field, and the printing industry.

[0037] Regarding the above unwinding section 10, please refer to Figure 1 , the unwinding section 10 includes an unwinding roller shaft 11. The unwinding roller shaft 11 can provide support for the winding and unwinding of the PET film layer 50, ensuring that the PET film layer 50 remains stable during movement and reducing phenomena such as sagging and twisting. The unwinding roller shaft 11 can be connected to a driving device, and the driving device provides power to the unwinding roller shaft 11, thereby controlling the winding or unwinding speed and tension of the PET film layer 50 and ensuring the smoothness and accuracy of the entire process. Please refer to Figure 3 , in the embodiment of the present application, the PET film layer 50 has a first surface 51 and a second surface 52 that are oppositely arranged along a first direction X. Among them, a part of the first surface 51 abuts against the unwinding roller shaft 11. The first direction X is along the thickness direction of the PET film layer 50.

[0038] Regarding the above casting section 20, please refer to Figure 1, the casting section 20 includes a casting inlet roller 21, a casting outlet roller 22 and a casting head 23.

[0039] The casting inlet roller 21 is arranged at the starting position of the casting section 20, and can accurately introduce the PET film layer 50 into the casting area, ensuring the correctness of the conveying direction and position of the PET film layer 50. The casting inlet roller 21 and the casting outlet roller 22 respectively apply a certain tension to the PET film layer 50, so that the PET film layer 50 maintains a certain flatness and tightness before entering the casting head 23.

[0040] The casting outlet roller 22 is arranged at the end position of the casting section 20. The casting outlet roller 22 has the function of driving the cast PET film layer 50 to move forward. It helps to maintain the shape and size stability of the cast PET film layer 50, and reduces the deformation or relaxation of the PET film layer 50 after leaving the casting head 23.

[0041] The casting head 23 is a device for uniformly extruding liquid or molten slurry to form a continuous film or coating. The casting head 23 is connected to the stirring barrel 25 through a gear pump 24. The ceramic slurry can be continuously stirred evenly in the stirring barrel 25, and the ceramic slurry can be introduced into the casting head 23 through the gear pump 24 for casting the ceramic slurry onto the PET film layer 50.

[0042] Please refer to Figure 1 , Figure 3 and Figure 4 , a part of the first surface 51 of the PET film layer 50 abuts against the casting inlet roller 21 and the casting outlet roller 22. The casting head 23 is arranged between the casting inlet roller 21 and the casting outlet roller 22. The casting head 23 is arranged below the PET film layer 50 and faces the second surface 52. The ceramic slurry extruded by the casting head 23 can adhere to the second surface 52 to form a ceramic film sheet 80. In the process of forming the ceramic film sheet 80, due to the influence of gravity, more organic matter in the ceramic slurry accumulates on the surface of the ceramic film sheet 80 away from the PET film layer 50, rather than on the surface of the ceramic film sheet 80 in contact with the PET film layer 50. This makes the surface of the prepared ceramic film sheet 80 away from the PET film layer 50 have stronger corrosion resistance, and the overall density of the ceramic film sheet 80 is better and more uniform. When printing conductive slurry on the ceramic film sheet 80, erosion can be reduced, and the yield rate of the ceramic film sheet 80 is improved.

[0043] In some embodiments, please refer to Figure 1, along the first direction X, the installation heights of the casting inlet roller 21 and the casting outlet roller 22 should be kept the same, which can reduce the situation of the PET film layer 50 tilting up and down. The casting head 23 is perpendicular to the PET film layer 50 between the casting inlet roller 21 and the casting outlet roller 22, and the outlet of the casting head 23 should match the height of the PET film layer 50 so that the ceramic slurry can be more easily coated on the second surface 52.

[0044] For the above drying section 30, please refer to Figure 1 , the drying section 30 is composed of a series of heating devices, ventilation devices, etc. It mainly dries the ceramic slurry attached to the PET film layer 50, removes the solvents and moisture in the ceramic slurry, and reaches the corresponding drying degree and performance requirements. The drying section 30 includes a first tension suction roller 31, a second tension suction roller 32 and a drying device 33, and the drying device 33 is arranged between the first tension suction roller 31 and the second tension suction roller 32. A part of the first surface 51 abuts against the first tension suction roller 31 and the second tension suction roller 32.

[0045] In some embodiments, please refer to Figure 1 , the PET film layer 50 is sequentially arranged on the first tension suction roller 31, the drying device 33 and the second tension suction roller 32. A part of the first surface 51 abuts against the first tension suction roller 31 and the second tension suction roller 32, and a part of the second surface 52 faces the drying device 33. The first tension suction roller 31 can provide tension to the PET film layer 50, so that the PET film layer 50 maintains a certain degree of tension during movement, reducing problems such as slack and wrinkles of the PET film layer 50. And the first tension suction roller 31 can pull out the PET film layer 50 from the previous process, playing a certain role in traction and transition. The second tension suction roller 32 can cooperate with the first tension suction roller 31 to adjust the tension level of the PET film layer 50 and adaptively correct problems such as the PET film layer 50 deviating from the running track.

[0046] Please refer to Figure 1 and Figure 3, the drying device 33 can evaporate a large amount of moisture in the ceramic slurry and remove the solvent, so that a ceramic film 80 is formed on the second surface 52 of the ceramic slurry. In some embodiments, the drying device 33 includes a first temperature zone 331, a second temperature zone 332 and a third temperature zone 333, and the PET film layer 50 is sequentially disposed in the first temperature zone 331, the second temperature zone 332 and the third temperature zone 333. Among them, the first temperature zone 331 is used to provide a temperature of T1, the second temperature zone 332 is used to provide a temperature of T2, and the third temperature zone 333 is used to provide a temperature of T3, where T1 < T2 < T3. Exemplarily, the first temperature zone 331 is a low temperature zone, and the temperature is set to 25°C to 45°C. The second temperature zone 332 is a medium temperature zone, and the temperature is set to 45°C to 65°C. The third temperature zone 333 is a high temperature zone, and the temperature is set to 65°C to 90°C.

[0047] For the above-mentioned winding unit 40, please refer to Figure 1 , the winding unit 40 includes a winding roller shaft 41, a part of the first surface 51 abuts against the winding roller shaft 41, and the winding roller shaft 41 is used to wind the PET film layer 50 after calendaring. It is convenient for storage, transportation and subsequent processing. Similar to the function of the unwinding roller shaft 11, the winding roller shaft 41 can be connected to a driving device, and the driving device provides power to the winding roller shaft 41, so as to control the winding or winding speed and tension of the PET film layer 50, ensuring the smoothness and accuracy of the whole process.

[0048] The embodiment of the present application provides a calendaring device 100 for manufacturing MLCC. A part of the first surface 51 of the PET film layer 50 abuts against the calendaring inlet roller shaft 21 and the calendaring outlet roller shaft 22. The calendaring head 23 is disposed between the calendaring inlet roller shaft 21 and the calendaring outlet roller shaft 22. The calendaring head 23 is disposed below the PET film layer 50 and faces the second surface 52. The ceramic slurry extruded by the calendaring head 23 can adhere to the second surface 52 to form a ceramic film 80. During the formation of the ceramic film 80, due to the influence of gravity, more organic matter in the ceramic slurry accumulates on the surface of the ceramic film 80 away from the PET film layer 50, rather than on the surface of the ceramic film 80 in contact with the PET film layer 50, making the surface of the prepared ceramic film 80 away from the PET film layer 50 have stronger corrosion resistance, and the overall density of the ceramic film 80 is more uniform. When printing conductive paste on the ceramic film 80, erosion can be reduced, and the yield rate of the ceramic film 80 is improved.

[0049] In some embodiments, please refer to Figure 5 , the unwinding unit 10 further includes a deviation correction device 12, which is a device for automatically correcting the deviation of the PET film layer 50 from the predetermined path during transmission. The deviation correction device 12 is disposed between the unwinding roller shaft 11 and the calendaring inlet roller shaft 21 to reduce the problem of deviation of the PET film layer 50 when entering the calendaring unit 20.

[0050] Further, the deviation rectifying device 12 includes a first roller 121, a second roller 122 and a deviation rectifying member 123. The deviation rectifying member 123 is disposed between the first roller 121 and the second roller 122. The PET film layer 50 is sequentially disposed on the unwinding roller 11, the first roller 121, the second roller 122 and the deviation rectifying member 123. The first roller 121 and the second roller 122 can adjust the movement direction of the PET film layer 50. Wherein, a part of the first surface 51 abuts against the unwinding roller 11 and the first roller 121. The first roller 121 can exert a certain extrusion on the first surface 51, which helps to shape and stabilize the shape and thickness of the PET film layer 50, and can discharge some bubbles from the first surface 51 during the extrusion with the first surface 51, eliminating minor defects and unevenness on the first surface 51. A part of the second surface 52 abuts against the second roller 122. Similar to the function of the first roller 121, the second roller 122 can exert a certain extrusion on the second surface 52, which helps to shape and stabilize the shape and thickness of the PET film layer 50, and can discharge some bubbles from the second surface 52 during the extrusion with the second surface 52, eliminating minor defects and unevenness on the second surface 52.

[0051] In some embodiments, please refer to Figure 5 , the casting device 100 further includes a first adjustment part 60. The first adjustment part 60 is disposed between the drying part 30 and the casting part 20. The first adjustment part 60 can adjust the movement direction of the PET film layer 50, so that each device in the casting device 100 is more compact, saving the operating space and floor area of the casting device 100. Further, the first adjustment part 60 includes a third tension suction roller 61 and a fourth tension suction roller 62. The PET film layer 50 is sequentially disposed on the casting outlet roller, the third tension suction roller 61 and the fourth tension suction roller 62. Wherein, a part of the first surface 51 abuts against the casting outlet roller, the third tension suction roller 61 and the fourth tension suction roller 62. Similar to the functions of the first tension suction roller 31 and the second tension suction roller 32, the third tension suction roller 61 can provide tension to the PET film layer 50, so that the PET film layer 50 maintains a certain degree of tension during movement, reducing problems such as slack and wrinkles of the PET film layer 50. And the third tension suction roller 61 can pull out the PET film layer 50 from the previous process, playing a certain role in traction and transition. The fourth tension suction roller 62 can cooperate with the third tension suction roller 61 to adjust the tension level of the PET film layer 50 and adaptively correct problems such as the possible deviation of the running track of the PET film layer 50.

[0052] In some embodiments, please refer to Figure 5, the first adjustment part 60 further includes a first guide roller 63. The first guide roller 63 is arranged between the casting outlet roller shaft 22 and the third tension suction roller 61. The PET film layer 50 is sequentially arranged on the casting outlet roller, the first guide roller 63 and the third tension suction roller 61. A part of the first surface 51 abuts against the casting outlet roller, the first guide roller 63 and the third tension suction roller 61. The first guide roller 63 can ensure that the PET film layer 50 moves along a predetermined route and reduce the situation of deviation. And the overall weight of the PET film layer 50 will increase after casting. The first guide roller 63 has a supporting effect on the PET film layer 50 and reduces the sagging of the PET film layer 50 during movement.

[0053] In some embodiments, please refer to Figure 5 , the casting device 100 further includes a second adjustment part 70. The second adjustment part 70 is arranged between the drying part 30 and the winding part 40. The second adjustment part 70 includes a second guide roller 71. The PET film layer 50 is sequentially arranged on the second tension suction roller 32, the second guide roller 71 and the winding roller shaft 41. The first surface 51 abuts against the second tension suction roller 32 and the winding roller shaft 41, and the second surface 52 abuts against the second guide roller 71. Similar to the function of the first adjustment part 60, the second adjustment part 70 can adjust the movement direction of the PET film layer 50. Further, the second adjustment part 70 further includes a fifth suction roller 72 and a sixth tension suction roller 73. The PET film layer 50 is sequentially arranged on the second guide roller 71, the fifth suction roller 72 and the sixth tension suction roller 73. The second surface 52 abuts against the second guide roller 71, the fifth suction roller 72 and the sixth tension suction roller 73. Among them, the fifth suction roller 72 is similar to the first tension suction roller 31 in function, and the sixth tension suction roller 73 is similar to the second tension suction roller 32 in function.

[0054] In some embodiments, please refer to Figure 5 , the winding part 40 further includes a third roller shaft 42 and a fourth roller shaft 43. Both the third roller shaft 42 and the fourth roller shaft 43 are arranged between the winding roller shaft 41 and the sixth tension suction roller 73. The PET film layer 50 is sequentially arranged on the sixth tension suction roller 73, the third roller shaft 42 and the fourth roller shaft 43. The third roller shaft 42 can adjust the movement direction of the PET film layer 50. Among them, the first surface 51 abuts against the third roller shaft 42. The third roller shaft 42 changes the winding structure of the PET film layer 50, so that the ceramic film sheet 80 attached to the wound PET film layer 50 faces inward, reducing the damage and moisture absorption of the ceramic film sheet 80 during storage and transportation. And after drying, the ceramic film sheet 80 can discharge some air bubbles from the first surface 51 through the extrusion of the third roller shaft 42, eliminating the minor defects and unevenness on the surface of the ceramic film sheet 80. The second surface 52 abuts against the fourth roller shaft 43 and the sixth tension suction roller 73. The fourth roller shaft 43 can adjust the movement direction of the PET film layer 50 and has a supporting effect on the PET film layer 50 to ensure the smooth transportation of the PET film layer 50.

[0055] It should be noted that the description and drawings of the present utility model provide preferred embodiments of the present utility model. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations to the content of the present utility model. The purpose of providing these embodiments is to make the understanding of the disclosed content of the present utility model more thorough and comprehensive. Moreover, the above technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as within the scope described in the description of the present utility model; further, for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A casting device for manufacturing MLCC, characterized in that, It includes an unwinding section, a casting section, a drying section, a winding section, and a PET film layer. The PET film layer is sequentially arranged on the unwinding section, the casting section, the drying section, and the winding section; The PET film layer has a first surface and a second surface arranged oppositely. The unwinding section includes an unwinding roller shaft, and a part of the first surface abuts against the unwinding roller shaft; The casting section includes a casting inlet roller shaft, a casting outlet roller shaft, and a casting head. A part of the first surface abuts against the casting inlet roller shaft and the casting outlet roller shaft. The casting head is arranged between the casting inlet roller shaft and the casting outlet roller shaft, and the casting head is arranged below the PET film layer and faces the second surface; The drying section includes a first tension suction roller, a second tension suction roller, and a drying device. A part of the first surface abuts against the first tension suction roller and the second tension suction roller. The drying device is arranged between the first tension suction roller and the second tension suction roller; The winding section includes a winding roller shaft, and a part of the first surface abuts against the winding roller shaft. The winding roller shaft is used for winding the cast PET film layer.

2. The casting device according to claim 1, characterized in that The unwinding section further includes a deviation rectifying device, and the deviation rectifying device is arranged between the unwinding roller shaft and the casting inlet roller shaft; The deviation rectifying device includes a first roller shaft, a second roller shaft, and a deviation rectifying member. The deviation rectifying member is arranged between the first roller shaft and the second roller shaft. The PET film layer is sequentially arranged on the unwinding roller shaft, the first roller shaft, the second roller shaft, and the deviation rectifying member; Wherein, a part of the first surface abuts against the unwinding roller shaft and the first roller shaft, and a part of the second surface abuts against the second roller shaft.

3. The casting device according to claim 1, characterized in that, The casting head is perpendicular to the PET film layer between the casting inlet roller shaft and the casting outlet roller shaft.

4. The casting device according to claim 1, characterized in that The drying device includes a first temperature zone, a second temperature zone, and a third temperature zone. The PET film layer is sequentially arranged in the first temperature zone, the second temperature zone, and the third temperature zone; Wherein, the first temperature zone is used to provide a temperature of T1, the second temperature zone is used to provide a temperature of T2, the third temperature zone is used to provide a temperature of T3, and T1 < T2 < T3.

5. The casting device according to claim 4, characterized in that, The PET film layer is sequentially arranged on the first tension suction roller, the drying device, and the second tension suction roller; A part of the first surface abuts against the first tension suction roller and the second tension suction roller, and a part of the second surface faces the drying device.

6. The casting device according to claim 1, characterized in that The casting equipment further includes a first adjustment section, and the first adjustment section is arranged between the drying section and the casting section; The first adjustment section includes a third tension suction roller and a fourth tension suction roller. The PET film layer is sequentially arranged on the casting outlet roller, the third tension suction roller, and the fourth tension suction roller; Wherein, a part of the first surface abuts against the casting outlet roller, the third tension suction roller, and the fourth tension suction roller.

7. The casting device according to claim 6, characterized in that, The first adjustment section further includes a first guide roller, and the first guide roller is arranged between the casting outlet roller shaft and the third tension suction roller. The PET film layer is sequentially arranged on the casting outlet roller, the first guide roller, and the third tension suction roller; The portion of the first surface abuts against the casting outlet roller, the first guide roller, and the third tension suction roller.

8. The casting device according to claim 5, characterized in that, The casting device further includes a second adjustment unit disposed between the drying unit and the winding unit. The second adjustment unit includes a second guide roller, and the PET film layer is sequentially disposed on the second tension suction roller, the second guide roller, and the winding roller shaft. The first surface abuts against the second tension suction roller and the winding roller shaft, and the second surface abuts against the second guide roller.

9. The casting device according to claim 8, characterized in that, The second adjustment unit further includes a fifth suction roller and a sixth tension suction roller, and the PET film layer is sequentially disposed on the second guide roller, the fifth suction roller, and the sixth tension suction roller. The second surface abuts against the second guide roller, the fifth suction roller, and the sixth tension suction roller.

10. The casting device according to claim 9, characterized in that, The winding unit further includes a third roller shaft and a fourth roller shaft. Both the third roller shaft and the fourth roller shaft are disposed between the winding roller shaft and the sixth tension suction roller, and the PET film layer is sequentially disposed on the sixth tension suction roller, the third roller shaft, and the fourth roller shaft. The first surface abuts against the third roller shaft, the second surface abuts against the fourth roller shaft and the sixth tension suction roller.

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