Flexible adsorption mechanism for fuel cell printing process

Abstract

The invention belongs to the technical field of solid oxide fuel cell production, and particularly relates to a flexible adsorption mechanism for a fuel cell printing process, which solves the technical problems of high printing difficulty, low yield and low production efficiency of bending deformation materials, and comprises a workbench, a bottom plate, a rubber pad and a metal frame, a rubber pad adsorption area is arranged in the circumferential direction of the product adsorption area, array adsorption holes are formed in the positions, corresponding to the product adsorption area and the rubber pad adsorption area, of the workbench, the bottom plate is connected with the bottom of the workbench in a sealed mode, and a negative pressure pipeline connector is connected to the bottom plate. The rubber pad is located on the top face of the workbench, an air vent penetrates through the rubber pad, the metal frame is located on the rubber pad, and an avoiding hole capable of containing a product is formed in the middle of the metal frame. The flexible adsorption and printing technology of the bending deformation material is achieved through the rubber pad, redundant product correction, product screening and multiple printing procedures do not need to be added, the product yield and performance are improved, and the production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of solid oxide fuel cell production, and relates to a printing adsorption mechanism, in particular to a flexible adsorption mechanism used in a fuel cell printing process. Background Art

[0002] Solid oxide fuel cell (SOFC) is an efficient and environmentally friendly electrochemical energy conversion device that can directly convert the chemical energy of fuel into electrical energy without the need for a combustion process. Compared with traditional batteries, SOFC has higher energy conversion efficiency and longer service life, while also reducing carbon dioxide emissions, so it has important application prospects in the energy field.

[0003] Printing technology plays an increasingly important role in the manufacturing process of modern fuel cells, especially in the production of proton exchange membrane fuel cells (PEMFC) and solid oxide fuel cells (SOFC). Printing technology can produce high-quality fuel cell components at a low cost and high efficiency, which is especially suitable for large-scale production. Solid oxide fuel cells (SOFC) may encounter thermomechanical stress problems during the preparation process, especially during the sintering and cooling stages, which may cause bending and deformation of the battery components, which will have a significant impact on the subsequent printing process. This is because during the printing process, whether it is screen printing, inkjet printing or other printing technologies, the substrate is required to have a certain degree of flatness to ensure that the printed material can be evenly and accurately deposited in the predetermined position. Deformed SOFC components may cause the following printing problems: 1. Reduced printing accuracy: Uneven thickness in the deformed area may cause changes in the thickness of the printed layer, affecting the accuracy and consistency of the printed pattern.

[0004] 2. Material accumulation and leakage: In raised or recessed areas, printed materials may accumulate or leak, resulting in additional material waste and pattern defects.

[0005] 3. Poor contact: In screen printing, the contact between the screen and the substrate may be insufficient due to deformation, resulting in incomplete printing.

[0006] 4. Print head collision risk: In inkjet printing, severe deformation may cause the print head to collide with the substrate, damaging the print head or causing printing interruption.

[0007] In the existing SOFC printing process, the printing process requirements are mostly met by means of correcting deformation, adjusting printing parameters, customizing screens and tools, multi-step printing, sorting and screening, etc., but this also brings disadvantages such as adding additional correction processes, increasing the preparation cost of SOFC components, and reducing production efficiency. Therefore, there is an urgent need for a flexible adsorption printing mechanism that can ensure the quality and performance of SOFC components without affecting production efficiency. Summary of the invention

[0008] In order to overcome the technical defects of great printing difficulty, low yield and low production efficiency caused by the bending deformation of existing solid oxide fuel cell (SOFC) components, the present invention provides a flexible adsorption mechanism for fuel cell printing process.

[0009] The present invention provides a flexible adsorption mechanism for a fuel cell printing process, comprising a workbench, a bottom plate, a rubber pad and a metal frame, wherein a rectangular product adsorption area is arranged on the workbench, a square ring-shaped rubber pad adsorption area is arranged in the circumference of the product adsorption area, a rectangular groove and a square ring-shaped groove are arranged at the bottom of the workbench respectively corresponding to the positions of the product adsorption area and the rubber pad adsorption area, an array of adsorption holes penetrating the top surface and the bottom surface are arranged on the workbench corresponding to the product adsorption area and the rubber pad adsorption area, the bottom plate is fixedly and sealedly connected to the bottom of the workbench, so that the rectangular groove and the square ring-shaped groove are isolated from each other and connected to independent negative pressure sources respectively, and negative pressure pipeline joints corresponding to the positions of the product adsorption area and the rubber pad adsorption area are connected to the bottom plate; the rubber pad is located on the top surface of the workbench, and the rubber pad covers the product adsorption area and the rubber pad adsorption area of ​​the workbench, the rubber pad is penetrated with vents corresponding to the array adsorption holes in the product adsorption area one by one, the metal frame is located on the multiple vents of the rubber pad, and an avoidance hole for accommodating the product is arranged in the middle of the metal frame.

[0010] Two independent adsorption areas are arranged on the workbench, namely the product adsorption area and the rubber pad adsorption area. The negative pressure sources connected to the product adsorption area and the rubber pad adsorption area are independent of each other and can be controlled separately. The rubber pad is adsorbed to the top surface of the workbench through the rubber pad adsorption area, and the metal frame is adsorbed to the top of the rubber pad through the vent on the rubber pad. The product is located in the avoidance hole in the middle of the metal frame, and the product is bonded to the metal frame through a traceless tape. The flexible adsorption mechanism described in the present invention can be used to print bent and deformed products. The rubber pad is a flexible material, and it is used as a pad to realize the flexible adsorption and printing technology of bent and deformed materials, without adding other processes, improving production efficiency and reducing production costs; the present invention adopts dual negative pressure channels, one negative pressure adsorbs the rubber pad, and the other negative pressure passes through the vent on the rubber pad to adsorb the metal frame and the product; the two negative pressure channels are controlled separately and do not interfere with each other; for products of different sizes, the metal frame can be replaced, and the operation is simple and efficient. The use of a metal frame avoids scratches and damage to the screen graphic area caused by the silk screen scraper at the beginning and end of printing, ensures printing accuracy and stability, and reduces production costs.

[0011] Preferably, a circle of threaded holes is also arranged on the workbench at the outer periphery of the square annular groove, and the workbench is fastened to the bottom plate through the threaded holes and screws. Such a connection structure ensures that the workbench and the bottom plate are firmly connected.

[0012] Compared with the prior art, the technical solution provided by the present invention has the following technical effects: a flexible adsorption mechanism for a fuel cell printing process provided by the present invention adopts a metal frame to avoid scratches and damage to the screen graphic area caused by the silk screen scraper at the beginning and end of printing, thereby ensuring printing accuracy and stability and reducing production costs; using a rubber pad as a cushion, the flexible adsorption and printing technology of bent and deformed materials is realized, without adding unnecessary product correction processes, product screening processes and multiple printing processes, thereby improving product yield and performance and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of an exploded structure of a flexible adsorption mechanism used in a fuel cell printing process according to a certain embodiment of the present invention; Figure 2 is a cross-sectional schematic diagram of the flexible adsorption mechanism described in an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a workbench of a flexible adsorption mechanism used in a fuel cell printing process according to an embodiment of the present invention; Figure 4 It is a structural schematic diagram of a metal frame of a flexible adsorption mechanism used in a fuel cell printing process according to an embodiment of the present invention; Figure 5 This is a schematic structural diagram of a product of a flexible adsorption mechanism for a fuel cell printing process described in an embodiment of the present invention.

[0016] In the figure: 1. Product; 2. Metal frame; 3. Rubber pad; 4. Workbench; 5. Bottom plate; 6. Negative pressure pipe joint; 7. Silk screen scraper; 8. Rectangular groove; 9. Square ring groove; 10. Array adsorption hole; 11. Vent; 12. Avoidance hole. DETAILED DESCRIPTION

[0017] In order to more clearly understand the above-mentioned objectives, features and advantages of the present invention, the scheme of the present invention will be further described below. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0018] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] In one embodiment, Figure 1 As shown, a flexible adsorption mechanism for a fuel cell printing process is disclosed, comprising a workbench 4, a bottom plate 5, a rubber pad 3 and a metal frame 2, a rectangular product 1 adsorption area is provided on the workbench 4, a square ring-shaped rubber pad 3 adsorption area is provided in the circumference of the product 1 adsorption area, a rectangular groove 8 and a square ring-shaped groove 9 corresponding to the positions of the product 1 adsorption area and the rubber pad 3 adsorption area are provided at the bottom of the workbench 4, an array of adsorption holes 10 penetrating the top and bottom surfaces are provided on the workbench 4 corresponding to the product 1 adsorption area and the rubber pad 3 adsorption area, and the bottom plate 5 is fixedly sealed to the bottom of the workbench 4. The rectangular groove 8 and the square ring groove 9 are sealed and connected so that the rectangular groove 8 and the square ring groove 9 are isolated from each other and connected to independent negative pressure sources respectively. The bottom plate 5 is connected with negative pressure pipe joints 6 corresponding to the positions of the adsorption area of ​​the product 1 and the adsorption area of ​​the rubber pad 3 respectively; the rubber pad 3 is located on the top surface of the workbench 4, and the rubber pad 3 covers the adsorption area of ​​the product 1 and the adsorption area of ​​the rubber pad 3 of the workbench 4. The rubber pad 3 is penetrated with vents 11 corresponding to the array adsorption holes 10 in the adsorption area of ​​the product 1 one by one. The metal frame 2 is located on the multiple vents 11 of the rubber pad 3, and an avoidance hole 12 for accommodating the product 1 is provided in the middle of the metal frame 2.

[0021] Two independent adsorption areas are arranged on the workbench 4, namely, the product 1 adsorption area and the rubber pad 3 adsorption area. The negative pressure sources connected to the product 1 adsorption area and the rubber pad 3 adsorption area are independent of each other and can be controlled separately. The rubber pad 3 is adsorbed to the top surface of the workbench 4 through the rubber pad 3 adsorption area, and the metal frame 2 is adsorbed to the top of the rubber pad 3 through the vent 11 on the rubber pad 3. The product 1 is located in the avoidance hole 12 in the middle of the metal frame 2, and the product 1 is bonded to the metal frame 2 through a traceless tape. The flexible adsorption mechanism described in the present invention can be used to print the bent and deformed product 1. The rubber pad 3 is a flexible material. As a pad, it realizes the flexible adsorption and printing technology of the bent and deformed material without adding other processes, thereby improving production efficiency and reducing production costs. The present invention adopts dual negative pressure channels, one negative pressure adsorbs the rubber pad 3, and the other negative pressure passes through the vent on the rubber pad 3 to adsorb the metal frame 2 and the product 1; the two negative pressure channels are controlled separately and do not interfere with each other; for products 1 of different sizes, the metal frame 2 can be replaced, and the operation is simple and efficient. The metal frame 2 is used to avoid scratches and damage to the screen pattern area caused by the screen printing scraper 7 at the beginning and end of printing, thereby ensuring printing accuracy and stability and reducing production costs.

[0022] On the basis of the above embodiment, in a preferred embodiment, a circle of threaded holes is further provided on the workbench 4 on the outer periphery of the square annular groove 9, and the workbench 4 is fastened to the bottom plate 5 through the threaded holes and screws. Such a connection structure ensures that the workbench 4 and the bottom plate 5 are firmly connected.

[0023] The above is only a specific implementation of the present invention, which enables those skilled in the art to understand or implement the present invention. Although detailed descriptions are given with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A flexible adsorption mechanism for a fuel cell printing process, characterized in that: include: A workbench (4) is provided with a rectangular product (1) adsorption area, a square ring-shaped rubber pad (3) adsorption area is arranged around the product (1) adsorption area, a rectangular groove (8) and a square ring-shaped groove (9) are arranged at the bottom of the workbench (4) corresponding to the positions of the product (1) adsorption area and the rubber pad (3) adsorption area, respectively, and array adsorption holes (10) are arranged on the workbench (4) corresponding to the product (1) adsorption area and the rubber pad (3) adsorption area, which penetrate the top surface and the bottom surface; A bottom plate (5) is fixedly and sealedly connected to the bottom of the workbench (4); the rectangular groove (8) and the square annular groove (9) are isolated from each other so as to be connected to independent negative pressure sources respectively; and negative pressure pipe joints (6) corresponding to the positions of the adsorption area of ​​the product (1) and the adsorption area of ​​the rubber pad (3) are connected to the bottom plate (5); A rubber pad (3) is located on the top surface of the workbench (4), and the rubber pad (3) covers the product (1) adsorption area and the rubber pad (3) adsorption area of ​​the workbench (4), and the rubber pad (3) is penetrated by vents (11) corresponding to the array adsorption holes (10) in the product (1) adsorption area; A metal frame (2) is located on the multiple vents (11) of the rubber pad (3), and a relief hole (12) capable of accommodating the product (1) is provided in the middle of the metal frame (2).

2. A flexible adsorption mechanism for fuel cell printing process according to claim 1, characterized in that: A circle of threaded holes is also provided on the workbench (4) on the outer periphery of the square annular groove (9), and the workbench (4) and the bottom plate (5) are fastened and connected via the threaded holes and screws.

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