High-frequency hot press

Abstract

The utility model relates to a high-frequency hot press which comprises a machine frame. The upper pressing assembly is fixedly arranged at the upper part of the rack; the lower pressing assembly is arranged opposite to the upper pressing assembly, and the lower pressing assembly is configured to be capable of moving to be close to and away from the upper pressing assembly; the high-frequency heater is arranged adjacent to the upper pressing assembly and the lower pressing assembly; wherein the lower pressing assembly comprises a plurality of positioning units distributed in an array mode, each positioning unit comprises a sleeve and an inner core which are coaxially arranged, and a height difference exists between the top end face of each sleeve and the top end face of the corresponding inner core. According to the utility model, the top cover with a stepped structure can be accurately matched, and the hot pressing efficiency and quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery production, and more specifically, to a high-frequency hot press. Background Technology

[0002] In battery manufacturing, the hot-pressing process for the top cover is a crucial step in ensuring uniform adhesive distribution and consistent structural dimensions. With the advancement of high-frequency heating technology, rapid heating of the top cover using high-frequency waves has become an industry trend. However, this process imposes stringent requirements on the non-metallic properties of the positioning components. Ceramic materials, with their high strength, high-temperature resistance, and excellent insulation properties, have become an ideal alternative to metal positioning components. However, traditional ceramic parts, limited by processing technology, can only support the top cover through planar structures, making them difficult to adapt to stepped top cover structures. This leads to problems such as insufficient positioning accuracy and uneven distribution of hot-pressing stress. Utility Model Content

[0003] The purpose of this invention is to provide a high-frequency hot press that can precisely match a top cover with a stepped structure, thereby improving the efficiency and quality of hot pressing.

[0004] A high-frequency hot press includes: a frame; an upper clamping assembly fixedly disposed on the upper part of the frame; a lower clamping assembly disposed opposite to the upper clamping assembly, the lower clamping assembly being configured to move closer to and further away from the upper clamping assembly; and a high-frequency heater disposed adjacent to the upper and lower clamping assemblies; wherein the lower clamping assembly includes a plurality of positioning units arranged in an array, each positioning unit including a sleeve and an inner core coaxially disposed, the top surface of the sleeve and the top surface of the inner core having a height difference.

[0005] In the above technical solution, the lower clamping component can move to approach the upper clamping component, thereby applying pressure to the product. The non-planar positioning structure formed by the height difference between the sleeve and the inner core allows for precise matching of stepped battery top cover structures. This overcomes the limitations of traditional ceramic positioning components that can only support flat surfaces, achieving precise product positioning and avoiding stress concentration or uneven adhesive layer thickness caused by mismatched contact surfaces during hot pressing. The separate design of the sleeve and inner core allows for flexible adaptation to different top cover models by adjusting their dimensions, reducing the processing difficulty and cost of irregularly shaped ceramic parts.

[0006] Furthermore, the top end of the sleeve has several openings arranged circumferentially.

[0007] In the above technical solution, the opening facilitates the placement and removal of products, and at the same time helps to release the gas or excess material (such as colloid) generated during the hot pressing process, avoids air bubble residue or material accumulation, and improves the surface smoothness and bonding quality of the finished product.

[0008] Furthermore, the upper clamping assembly includes a plurality of pressure columns arranged in an array, and the pressure columns are configured in a one-to-one correspondence with the positioning unit.

[0009] In the above technical solution, the pressure column and the positioning unit correspond one-to-one to ensure that the pressure of each station is evenly distributed, improve the consistency of processing, and at the same time, it can realize the hot pressing of multiple products in one time, thereby improving the hot pressing efficiency.

[0010] Furthermore, the lower clamping assembly includes a lower mounting base and a fixed base, the fixed base being detachably connected to the lower mounting base, and a plurality of the positioning units being arranged on the fixed base.

[0011] In the above technical solution, the fixed base and the lower mounting base are detachably connected, which facilitates quick replacement of positioning units of different specifications or maintenance and cleaning, and enhances the adaptability and scalability of the equipment.

[0012] Furthermore, the upper clamping assembly includes an upper mounting base, and a plurality of first guide rods are provided between the upper mounting base and the lower mounting base.

[0013] In the above technical solution, the first guide rod can guide the upper and lower mounting seats to be precisely aligned, reduce positional deviations during the pressing process, and improve processing accuracy.

[0014] Furthermore, the frame includes a platform, and a plurality of second guide rods are provided between the lower mounting base and the platform.

[0015] In the above technical solution, the second guide rod can enhance the stability of the movement of the lower mounting base, prevent the lower clamping assembly from tilting or shifting, and ensure the accurate alignment of the lower clamping assembly and the upper clamping assembly.

[0016] Furthermore, it also includes a drive unit, which is disposed on the frame, and the output end of the drive unit is connected to the lower clamping assembly.

[0017] In the above technical solution, the driving component can drive the lower clamping assembly to move linearly, thereby achieving automated operation and improving processing efficiency and safety.

[0018] Furthermore, both the sleeve and the inner core are die-cast ceramic parts.

[0019] In the above technical solution, the ceramic part has the characteristics of high temperature resistance, wear resistance and excellent insulation performance, avoiding high frequency heating interference, reducing positioning errors caused by thermal expansion, and improving the reliability of long-term use.

[0020] Compared with existing technologies, the advantages of this invention are: the lower clamping component can move to approach the upper clamping component, thereby applying pressure to the product. The non-planar positioning structure formed by the height difference between the sleeve and the inner core allows for precise matching of stepped battery top cover structures, overcoming the limitations of traditional ceramic positioning components that can only support flat surfaces. This achieves precise product positioning and avoids stress concentration or uneven adhesive layer thickness caused by mismatched contact surfaces during hot pressing. The separate design of the sleeve and inner core allows for flexible adaptation to different top cover models by adjusting their dimensions, reducing the processing difficulty and cost of irregularly shaped ceramic parts. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the high-frequency hot press according to an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the positioning unit in an embodiment of the present invention.

[0023] Figure 3 This is a side view of the positioning unit according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the lower clamping assembly and the lower clamping assembly according to an embodiment of the present utility model.

[0025] Explanation of icon numbers:

[0026] Frame 1, platform 11, upper clamping assembly 2, pressure column 21, upper mounting base 22, first guide rod 23, lower clamping assembly 3, positioning unit 31, sleeve 311, inner core 312, opening 313, lower mounting base 32, fixed base 33, second guide rod 34, high frequency heater 4, driving component 5. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] Please refer to Figures 1 to 4In a preferred embodiment, the high-frequency hot press of this invention mainly includes a frame 1, an upper clamping assembly 2, a lower clamping assembly 3, and a high-frequency heater 4. The upper clamping assembly 2 is fixedly mounted on the upper part of the frame 1. The lower clamping assembly 3 is disposed opposite to the upper clamping assembly 2, and is configured to be movable to move closer to and further away from the upper clamping assembly 2. The high-frequency heater 4 is disposed adjacent to both the upper clamping assembly 2 and the lower clamping assembly 3. The lower clamping assembly 3 includes a plurality of positioning units 31 arranged in an array. Each positioning unit 31 includes a sleeve 311 and an inner core 312 coaxially arranged, with a height difference between the top surface of the sleeve 311 and the top surface of the inner core 312.

[0030] For example, the upper clamping assembly 2 is fixedly mounted on the upper end of the frame 1, and the lower clamping assembly 3 can move linearly in the vertical direction, thereby abutting or separating from the upper clamping assembly 2. When the lower clamping assembly 3 abuts against the upper clamping assembly 2, the two cooperate to apply pressure to the product placed in the positioning unit 31. The output end of the high-frequency heater 4 is adjacent to the abutting surface between the upper clamping assembly 2 and the lower clamping assembly 3 to emit high-frequency waves to heat the product. It is understood that the high-frequency heater 4 can use an existing high-frequency generator.

[0031] In this embodiment, the positioning units 31 are arranged in a row, with the distance between two adjacent positioning units 31 being equal. The sleeve 311 is formed as a hollow cylinder, and the inner core 312 is located inside the sleeve 311 and is coaxial with the sleeve 311. The height of the top surface of the inner core 312 is lower than the height of the top surface of the sleeve 311, thereby creating a height difference between the two. When a product (such as a battery top cover) is placed in the positioning unit 31, the outer edge of the product can abut against the top surface of the sleeve 311, while the boss located in the middle of the lower end surface of the product can abut against the top surface of the inner core 312, thereby achieving uniform support for the product.

[0032] As can be seen from the above technical solution, the non-planar positioning structure formed by the height difference between the sleeve 311 and the inner core 312 can accurately match the stepped battery top cover structure, breaking through the technical limitation of traditional ceramic positioning parts that can only support flat surfaces. This achieves precise positioning of the product and avoids stress concentration or uneven adhesive layer thickness caused by mismatched contact surfaces during hot pressing. The separate design of the sleeve 311 and the inner core 312 allows for flexible adaptation to different top cover models by adjusting their dimensions, reducing the processing difficulty and cost of irregularly shaped ceramic parts.

[0033] In this embodiment, the top end of the sleeve 311 has a plurality of openings 313 arranged circumferentially thereon. Exemplarily, the openings 313 are formed as grooves recessed downwards from the top end of the sleeve 311. In this embodiment, there are four openings 313, arranged at equal angles around the center of the sleeve 311 along its circumference. The openings 313 facilitate the placement and removal of the product, and also help release gas or excess material (such as colloid) generated during the hot pressing process, preventing air bubble residue or material accumulation, and improving the surface smoothness and bonding quality of the finished product.

[0034] The upper clamping assembly 2 includes a plurality of pressure columns 21 arranged in an array, with each pressure column 21 corresponding to a positioning unit 31. In this embodiment, the pressure column 21 is cylindrical with a flat lower end surface, which can cooperate with the positioning unit 31 to clamp the product. It is understood that in other possible embodiments, the pressure column 21 may adopt the same structure as the positioning unit 31, that is, a separate structure of sleeve 311 and inner core 312, and its lower end surface can form a groove through the height difference between the two to match products with a stepped structure on the upper surface. The one-to-one correspondence between the pressure column 21 and the positioning unit 31 ensures uniform pressure distribution at each station, improves processing consistency, and enables multiple products to be hot-pressed at once, improving hot-pressing efficiency.

[0035] The lower clamping assembly 3 includes a lower mounting base 32 and a fixed base 33. The fixed base 33 is detachably connected to the lower mounting base 32, and a plurality of positioning units 31 are arranged on the fixed base 33. For example, the fixed base 33 can be detachably connected to the lower mounting base 32 by screws or clips, thereby facilitating quick replacement of positioning units 31 of different specifications or maintenance and cleaning, and enhancing the adaptability and scalability of the equipment.

[0036] The upper clamping assembly 2 includes an upper mounting base 22, and a plurality of first guide rods 23 are provided between the upper mounting base 22 and the lower mounting base 32. For example, there are four first guide rods 23, each located at one of the four corners of the upper mounting base 22. The upper end of each first guide rod 23 is connected to the upper mounting base 22, and the lower end passes through the lower mounting base 32. The first guide rods 23 can guide the upper and lower mounting bases 32 to precise alignment, reducing positional deviations during the pressing process and improving processing accuracy.

[0037] The frame 1 includes a platform 11, and a plurality of second guide rods 34 are provided between the lower mounting base 32 and the platform 11. For example, there are four second guide rods 34, each located at one of the four corners of the lower mounting base 32. The upper end of each second guide rod 34 is connected to the lower mounting base 32, and the lower end passes through the platform 11. The second guide rods 34 enhance the stability of the movement of the lower mounting base 32, prevent the lower clamping assembly 3 from tilting or shifting, and ensure accurate alignment between the lower clamping assembly 3 and the upper clamping assembly 2.

[0038] The high-frequency hot press in this embodiment also includes a drive unit 5, which is mounted on the frame 1. The output end of the drive unit 5 is connected to the lower clamping assembly 3. The drive unit 5 can be an existing linear drive device, such as a cylinder. The drive unit 5 can drive the lower clamping assembly 3 to move linearly, thereby achieving automated operation and improving processing efficiency and safety.

[0039] In this embodiment, both the sleeve 311 and the inner core 312 are die-cast ceramic parts. Ceramic parts are characterized by high temperature resistance, wear resistance, and excellent insulation properties, avoiding interference from high-frequency heating, reducing positioning errors caused by thermal expansion, and improving long-term reliability.

[0040] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-frequency hot press, characterized in that, include: frame; The upper clamping assembly is fixedly installed on the upper part of the frame; A lower clamping assembly, disposed opposite to the upper clamping assembly, the lower clamping assembly being configured to move closer to and away from the upper clamping assembly; and A high-frequency heater is disposed adjacent to the upper and lower clamping assemblies; The lower clamping assembly includes several positioning units arranged in an array. Each positioning unit includes a sleeve and an inner core arranged coaxially, and the top surface of the sleeve and the top surface of the inner core have a height difference.

2. The high-frequency hot press according to claim 1, characterized in that, The top of the sleeve has several openings arranged circumferentially.

3. The high-frequency hot press according to claim 1, characterized in that, The upper clamping assembly includes a plurality of pressure columns arranged in an array, and each pressure column is configured in a one-to-one correspondence with the positioning unit.

4. The high-frequency hot press according to claim 1, characterized in that, The lower clamping assembly includes a lower mounting base and a fixed base, the fixed base being detachably connected to the lower mounting base, and a plurality of the positioning units being arranged on the fixed base.

5. The high-frequency hot press according to claim 4, characterized in that, The upper clamping assembly includes an upper mounting base, and a plurality of first guide rods are provided between the upper mounting base and the lower mounting base.

6. The high-frequency hot press according to claim 4, characterized in that, The frame includes a platform, and a plurality of second guide rods are provided between the lower mounting base and the platform.

7. The high-frequency hot press according to claim 1, characterized in that, It also includes a drive unit, which is disposed on the frame, and the output end of the drive unit is connected to the lower clamping assembly.

8. The high-frequency hot press according to claim 1, characterized in that, Both the sleeve and the inner core are die-cast ceramic parts.

Images