Hot pressboard and hot press
By designing a hot press plate containing lead-free paper and protective film, the problem of uniform stress during the hot pressing and setting of the film capacitor core is solved, and the uniform pressing and setting of the core and the improvement of production quality are achieved.
Patent Information
- Application Number
- CN202421797620.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-26
AI Technical Summary
In the prior art, it is difficult to achieve uniform stress during the hot pressing and setting of the film capacitor core, resulting in insufficient setting and affecting the production quality.
A hot press plate is designed, including a base plate, an intermediate layer and a protective film. The intermediate layer is equipped with lead-free paper, and the sealing tape is packaged as a hot press plate. Lead-free paper has the ability to deform, and evenly distributes pressure during the hot pressing process, and the protective film prevents paper debris from contacting the core.
Through this hot pressing plate, the core can be subjected to a uniform force, pressed and shaped, preventing paper scraps from adhering, and significantly improving the production quality of the core.
Smart Images
Figure CN223006665U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thin film capacitor production, in particular to a hot pressing plate and a hot press. Background Art
[0002] A thin film capacitor is a capacitor with a structure that uses metal foil as electrodes and overlaps it with plastic films such as polyethylene terephthalate, polypropylene, polystyrene, or polycarbonate at both ends and then winds them into a cylindrical shape. According to the type of plastic film, it is also respectively called a polyethylene terephthalate capacitor (also known as a Mylar capacitor), a polypropylene capacitor (also known as a PP capacitor), a polystyrene capacitor (also known as a PS capacitor), and a polycarbonate capacitor. Among them, the core is located inside the thin film capacitor. To ensure that each core in mass production is uniformly stressed, the core needs to be hot-pressed and shaped after winding.
[0003] In the industry, generally, an aluminum plate or an epoxy board is directly used to hot-press the core. For individual products with slightly different specifications, the pressure cannot be evenly applied, resulting in insufficient shaping and causing defects, thus reducing the production quality of the core. Summary of the Utility Model
[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides a hot pressing plate that can make the cores of thin film capacitors be uniformly stressed, enabling the cores to be pressed and shaped, thereby improving the production quality of the cores.
[0005] The utility model also provides a hot press with the above-mentioned hot pressing plate.
[0006] The hot pressing plate according to the first aspect embodiment of the utility model includes:
[0007] A bottom plate;
[0008] An intermediate layer, disposed above the bottom plate, and the intermediate layer is provided with lead-free paper;
[0009] A protective film, disposed above the intermediate layer;
[0010] Sealing tapes, adhered to the bottom plate, the lead-free paper, and the protective film.
[0011] The motor control box according to the embodiment of the present utility model has at least the following beneficial effects: By arranging an intermediate layer between the bottom plate and the protective film, the intermediate layer is provided with lead-free paper, and the sealing tape encapsulates and combines the bottom plate, the lead-free paper and the protective film into a hot pressing plate. The lead-free paper has the ability to deform. When the hot pressing plate presses the core, the lead-free paper in the intermediate layer of the hot pressing plate deforms. After deformation, the lead-free paper evenly distributes the pressure on the surfaces of multiple cores, enabling the cores to be evenly stressed during hot pressing, so that the cores are pressed and shaped. At the same time, the protective film arranged above the intermediate layer directly abuts against the cores during pressing, which can prevent the debris or burrs of the paper from directly contacting the cores, and prevent the paper scraps from adhering to the surface of the cores after pressing, thereby improving the production quality of the cores.
[0012] According to some embodiments of the present utility model, the intermediate layer includes multiple pieces of the lead-free paper, and the multiple pieces of the lead-free paper are sequentially pressed from top to bottom to form the intermediate layer.
[0013] According to some embodiments of the present utility model, the thickness of one piece of the lead-free paper is between 0.15 mm and 0.25 mm.
[0014] According to some embodiments of the present utility model, the protective film is made of polytetrafluoroethylene film.
[0015] According to some embodiments of the present utility model, the polytetrafluoroethylene film is provided with multiple layers, and the multiple layers of the polytetrafluoroethylene film are stacked to form the protective film.
[0016] According to some embodiments of the present utility model, the thickness of the protective film is between 0.1 mm and 0.15 mm.
[0017] According to some embodiments of the present utility model, the production material of the bottom plate is aluminum, and the thickness of the bottom plate is between 1.5 mm and 2.5 mm.
[0018] According to some embodiments of the present utility model, the sealing tape is bonded to the sides of the bottom plate, the lead-free paper and the protective film to encapsulate the bottom plate, the lead-free paper and the protective film into the hot pressing plate.
[0019] The hot press according to the second aspect embodiment of the present utility model includes a fixed platform, a movable platform and a hot pressing plate. The movable platform is located above or below the fixed platform. The movable platform is connected to a driver, and the driver drives the movable platform to move in a direction close to or away from the fixed platform. Both the fixed platform and the movable platform are provided with the hot pressing plate, and the hot pressing plate is arranged on the opposite side of the fixed platform and the movable platform.
[0020] According to the hot press of the second aspect embodiment of the present utility model, it has at least the following beneficial effects: Since the above-mentioned hot press plate is adopted in the hot press, by arranging an intermediate layer between the bottom plate and the protective film, the intermediate layer is provided with lead-free paper, and the sealing tape encapsulates and combines the bottom plate, the lead-free paper and the protective film into a hot press plate. The lead-free paper has the ability to deform. When the hot press plate presses the core, the lead-free paper located in the intermediate layer of the hot press plate deforms. After deformation, the lead-free paper evenly distributes the pressure on the surfaces of multiple cores, enabling the cores to be evenly stressed during hot pressing, so that the cores are pressed and shaped. At the same time, the protective film arranged above the intermediate layer directly abuts against the cores during pressing, which can prevent the paper debris or burrs from directly contacting the cores, so that the paper scraps will not adhere to the surface of the cores after pressing, thereby improving the production quality of the cores.
[0021] Additional aspects and advantages of the present utility model will be given in part in the following description, and part will become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The following further describes the present utility model in conjunction with the drawings and embodiments, where:
[0023] Figure 1 is the front view of the hot press plate of the embodiment of the present utility model;
[0024] Figure 2 is the top view of the hot press plate of the embodiment of the present utility model.
[0025] Reference numerals:
[0026] Bottom plate 100;
[0027] Intermediate layer 200, lead-free paper 210;
[0028] Protective film 300. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0029] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.
[0030] In the description of the present utility model, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and 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 therefore should not be construed as a limitation to the present utility model.
[0031] In the description of the present utility model, the meaning of "a number of" is one or more, the meaning of "a plurality of" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the base number, and understandings such as "above", "below", "within", etc. include the base number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0032] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. should be understood in a broad sense, and those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.
[0033] The following further elaborates on the present utility model in conjunction with the attached Figures 1 to 2 drawings.
[0034] Referring to Figures 1 to 2 As shown, an embodiment of the first aspect of the present utility model provides a hot pressing plate, which includes a bottom plate 100, an intermediate layer 200, and a protective film 300. The intermediate layer 200 and the protective film 300 are both located on the bottom plate 100. The bottom plate 100 provides a supporting force for the intermediate layer 200 and the protective film 300. The intermediate layer 200 is disposed above the bottom plate 100, and the intermediate layer 200 is provided with lead-free paper 210. Here, the lead-free paper 210 is not absolutely a paper without lead, but it is required that the lead content of the paper must be reduced to a level lower than 1000 ppm (i.e., below 0.1%). In short, the lead-free paper 210 is a kind of paper or paper product with extremely low lead content. The lead-free paper 210 itself can deform, so that when the hot pressing plate is pressed against the core, the core is uniformly stressed. At the same time, the use of the lead-free paper 210 is also a contribution to environmental protection, because lead is a multi-affinity material. After the core is pressed for a period of time, the lead-free paper 210 needs to be replaced. If paper with a relatively high lead content is used, a large amount of paper will be used, which will not only pollute the water source, but may also pollute the soil and air.
[0035] It should be noted that a protective film 300 is provided above the lead-free paper 210. The protective film 300 is disposed on the side of the lead-free paper 210 away from the bottom plate 100. When the hot pressing plate is pressed against the core, the lead-free paper 210 will lose a part of its moisture at high temperature, and as the temperature continues to rise, the lead-free paper 210 will become brittle. The brittle lead-free paper 210 has burrs. If the lead-free paper 210 directly abuts against the core, the burrs will adhere to the surface of the core, and the paper scraps falling off the lead-free paper 210 during the pressing process will also contaminate the surface of the core. By setting the protective film 300 above the lead-free paper 210 and making the protective film 300 directly contact the core, it can prevent the burrs, paper scraps or other foreign objects of the lead-free paper 210 from adhering to the surface of the core, thereby improving the production quality of the core. Moreover, when the protective film 300 is heated, it will also soften and deform. The deformed protective film 300 abuts against the surface of the core, which helps the pressure to be evenly distributed on the surface of the core. A sealing tape is provided on the outer periphery of the hot pressing plate. The sealing tape is bonded to the protective film 300, the bottom plate 200 and the lead-free paper 210. The sealing tape encapsulates and combines the bottom plate 100, the lead-free paper 210 of the intermediate layer 200 and the protective film 300 in the order from bottom to top to form a hot pressing plate.
[0036] It should be noted that an intermediate layer 200 is provided between the bottom plate 100 and the protective film 300. The intermediate layer 200 is provided with a lead-free paper 210. The sealing tape encapsulates the bottom plate 100, the lead-free paper 210 of the intermediate layer 200 and the protective film 300 together to form a hot pressing plate. The lead-free paper 210 has the ability to deform. When the hot pressing plate presses the core, the lead-free paper 210 in the intermediate layer 200 of the hot pressing plate deforms. After deformation, the lead-free paper 210 evenly distributes the pressure on the surfaces of multiple cores, enabling the cores to be evenly stressed during hot pressing, so that the cores are pressed and shaped. At the same time, the protective film 300 provided above the intermediate layer 200 directly abuts against the core during pressing, which can prevent debris such as paper scraps or burrs from directly contacting the core, so that the paper scraps after pressing will not adhere to the surface of the core, thereby improving the production quality of the core.
[0037] It can be understood that in some embodiments of the present invention, with reference to Figure 1 and Figure 2As shown, the intermediate layer 200 includes multiple lead-free papers 210. The multiple lead-free papers 210 are sequentially laminated from top to bottom to form the intermediate layer 200. The thickness of each lead-free paper 210 is between 0.15 mm and 0.25 mm. The intermediate layer 200 formed by the multiple lead-free papers 210 deforms when pressing the cores, and during the deformation process, the pressure is evenly distributed on the surfaces of multiple cores. The multiple lead-free papers 210 laminated together can withstand greater pressure, and the multiple lead-free papers 210 laminated into the intermediate layer 200 can buffer greater pressure, thereby distributing the pressure on the surfaces of the cores. Of course, the number and thickness of the lead-free papers 210 can be adaptively adjusted according to different models and different numbers of cores. The pressing forces of cores of different models are inconsistent, and pressing different numbers of cores simultaneously will also affect the number and thickness of the lead-free papers 210 in the hot pressing plate.
[0038] It should be noted that in some other embodiments, the intermediate layer 200 includes four lead-free papers 210. The four lead-free papers 210 can better buffer the pressure. When the cores are pressed, the pressure of the hot pressing plate on the cores is distributed on the surfaces of the cores, so that the surfaces of the cores can be evenly stressed, and thus hot pressing and shaping can be carried out.
[0039] It can be understood that in some embodiments of the present utility model, referring to Figure 1 and Figure 2 As shown, the protective film 300 is made of polytetrafluoroethylene film. The polytetrafluoroethylene film is also called Teflon film. It is made by molding, sintering, and cooling the suspension polytetrafluoroethylene resin into a blank, and then turning and calendering. The polytetrafluoroethylene film has a high crystallinity, the molecules are tightly arranged in orientation, the porosity is small, and substances with relatively large structures are difficult to pass through the polytetrafluoroethylene film to reach the surface of the core. The polytetrafluoroethylene film covers the surface of the lead-free paper 210 and directly abuts against the surface of the core. The polytetrafluoroethylene film serves as the medium for the lead-free paper 210 to contact the core, and the polytetrafluoroethylene film transmits the pressing force to the core. Due to the small porosity of the polytetrafluoroethylene film, even the paper scraps or burrs of the lead-free paper 210 are difficult to pass through the protective film 300 made of the polytetrafluoroethylene film, so that the polytetrafluoroethylene film can protect the core, reduce the burrs, paper scraps or other sundries adhered to the core during the pressing process, reduce the pollution suffered by the core during the processing process, and improve the production quality of the core.
[0040] It can be understood that in some embodiments of the present utility model, referring to Figure 1 and Figure 2As shown, the polytetrafluoroethylene film has multiple layers, and the multiple layers of polytetrafluoroethylene film are combined into a protective film 300. The thickness of the protective film 300 formed by combining multiple layers of polytetrafluoroethylene film is between 0.1 mm and 0.15 mm. The multiple layers of polytetrafluoroethylene film can better protect the surface of the core. The polytetrafluoroethylene film itself has a certain deformation ability and can extend after heating. The deformed polytetrafluoroethylene film can also make the pressure evenly distributed on the surface of the core, enabling the core to be pressed and shaped, thereby improving the production quality of the core.
[0041] It should be noted that in some other embodiments, the polytetrafluoroethylene film has four layers. The protective film 300 composed of four stacked polytetrafluoroethylene films can have good protection ability, reduce the adhesion of paper scraps or dirt to the core during hot pressing and shaping, maintain the cleanliness of the core surface, and improve the production quality of the core.
[0042] It can be understood that in some embodiments of the present utility model, referring to Figure 1 and Figure 2 As shown, the production material of the bottom plate 100 is aluminum metal. The thickness of the bottom plate 100 is between 1.5 mm and 2.5 mm. The material of the aluminum plate is light, which is convenient for processing and installation. At the same time, the structure of the aluminum plate is stable, and aluminum has good corrosion resistance, which can resist oxidation and corrosion. When the hot pressing plate presses the core, the bottom plate 100 is not easily chemically reacted with the surrounding environment or substances, thereby improving the production quality of the core. Aluminum also belongs to an environmentally friendly metal that can be recycled and has good environmental friendliness.
[0043] It can be understood that in some embodiments of the present utility model, referring to Figure 1 and Figure 2 As shown, the four corners of the hot pressing plate are provided with chamfers. The provided chamfers are helpful for the transportation and storage of the hot pressing plate, reducing the possibility of the sharp corner parts of the hot pressing plate causing harm to the handling workers or operators, and also reducing the possibility of damaging the core during the installation or handling of the hot pressing plate.
[0044] The hot press in the second aspect embodiment of the present utility model includes the hot pressing plate in the first aspect embodiment of the present utility model. The hot press further includes a fixed platform and a movable platform. The fixed platform is fixed inside the hot press and is located in the heating chamber of the hot press. The movable platform is located above or below the fixed platform. Hot pressing plates are installed on one side of the fixed platform facing the movable platform and one side of the movable platform facing the fixed platform. The core is laid on the upper side of the hot pressing plate. The movable platform is connected to a driver, and the driver can drive the movable platform to move in a direction close to or away from the fixed platform. The core is located between the fixed platform and the movable platform. When the movable platform moves closer to the fixed platform, the core is jointly extruded by the hot pressing plate on one side of the fixed platform and the hot pressing plate on one side of the movable platform, and the core is hot pressed and shaped under the action of the hot pressing plate.
[0045] Since the hot press machine adopts all the technical solutions of the hot pressing plate in the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments.
[0046] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those of ordinary skill in the relevant technical field.
Claims
1. A hot pressing plate, characterized in that: include: Base plate; An intermediate layer is arranged above the bottom plate, and the intermediate layer is provided with lead-free paper; A protective film, disposed above the intermediate layer; A sealing tape is bonded to the base plate, the lead-free paper and the protective film.
2. A hot pressing plate according to claim 1, characterized in that: The middle layer includes a plurality of sheets of lead-free paper, and the plurality of sheets of lead-free paper are pressed together in sequence from top to bottom to form the middle layer.
3. A hot pressing plate according to claim 2, characterized in that: The thickness of a piece of the lead-free paper is between 0.15 mm and 0.25 mm.
4. A hot pressing plate according to claim 1, characterized in that: The protective film is made of polytetrafluoroethylene film.
5. A hot pressing plate according to claim 4, characterized in that: The polytetrafluoroethylene film is provided with multiple layers, and the multiple layers of polytetrafluoroethylene film are stacked to form the protective film.
6. A hot pressing plate according to claim 5, characterized in that: The thickness of the protective film is between 0.1 mm and 0.15 mm.
7. A hot pressing plate according to claim 1, characterized in that: The base plate is made of aluminum, and the thickness of the base plate is between 1.5 mm and 2.5 mm.
8. A hot pressing plate according to claim 1, characterized in that: The sealing tape is adhered to the sides of the bottom plate, the lead-free paper and the protective film to package the bottom plate, the lead-free paper and the protective film into the hot pressing plate.
9. A hot pressing plate according to claim 1, characterized in that: The hot pressing plate is provided with chamfers at the corners around it.
10. A hot press, characterized in that: include: Fixed platform; A movable platform is located above or below the fixed platform, and the movable platform is connected to a driver, and the driver drives the movable platform to move toward or away from the fixed platform; The hot pressing plate described in any one of claims 1 to 9, wherein both the fixed platform and the movable platform are provided with the hot pressing plate, and the hot pressing plate is arranged on the opposite side of the fixed platform and the movable platform.