Arc-shaped ceramic sheet silvering spray tooling

Abstract

The utility model relates to an arc ceramic piece silvering spraying frock for solving the problem that the arc piezoelectric ceramic surface of bowl type, spherical and the like cannot be silk screen printed, and the efficiency of manual silvering is low and the quality consistency is poor. The frock includes a negative pressure bottom plate, replaceable silvering frock plate, three-axis programmable moving platform, negative pressure vacuum pump and silver paste spraying device. The negative pressure bottom plate is connected to the vacuum pump through a negative pressure pipeline to adsorb and fix the ceramic piece; the silvering frock plate is provided with matrix type positioning holes to realize simultaneous operation of multiple pieces; the silver paste spraying device is composed of a silver paste storage needle tube and a high-pressure atomizing nozzle, and is connected to an air source through three-way positive pressure pipelines to realize silver paste delivery and atomization. The frock has full-automatic and programmable spraying functions, significantly improves production efficiency and silver layer consistency, and is suitable for batch industrial production.

Description

Technical Field

[0001] This utility model relates to the field of piezoelectric ceramic production technology, and in particular to a tooling for preparing arc-shaped ceramic sheets for silver spraying. Background Technology

[0002] For piezoelectric ceramic elements, especially ceramic wafers with complex curved surfaces such as bowl-shaped and spherical shapes, applying silver paste to their surfaces to form electrodes is a crucial manufacturing process. However, due to the non-planar curved surface structure of these ceramic parts, traditional screen printing processes struggle to achieve uniform and complete silver paste coating.

[0003] Currently, the silver preparation process for these curved ceramic sheets in the industry typically relies on manual operation. Specifically, a brush or paintbrush is used to apply silver paste to the surface of the ceramic sheet. This primitive manual method has significant drawbacks: low production efficiency, inconsistent product quality, and inability to meet the demands of mass production. Therefore, there is an urgent need to develop a specialized silver preparation spraying fixture for curved ceramic sheets to address these technical challenges, overcome production bottlenecks, and achieve efficient, stable, automated, and high-quality silver preparation. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a silver spraying fixture for an arc-shaped ceramic sheet, comprising:

[0005] The negative pressure base plate is fixedly installed on a three-axis programmable moving platform. It has a vacuum channel inside and is provided with an air port for connecting to the negative pressure air path and multiple negative pressure adsorption holes that communicate with the vacuum channel.

[0006] A silver-spraying tooling plate is detachably installed on the upper surface of the negative pressure base plate. It has multiple positioning holes corresponding to the negative pressure adsorption holes for placing the arc-shaped ceramic parts to be sprayed.

[0007] A negative pressure vacuum pump is connected to the air port of the negative pressure base plate via a connecting air pipe I, and is used to provide adsorption force so that the ceramic parts placed on the silver-sprayed tooling plate are reliably fixed.

[0008] The silver paste spraying device includes a silver paste storage needle and a high-pressure atomizing nozzle. It is connected to the output pressure distribution port of the mobile platform through connecting air pipe II and connecting air pipe III. The pressure distribution port is equipped with a pressure regulator to adjust and output a set positive pressure.

[0009] Meanwhile, the silver paste storage needle is connected to the high-pressure atomizing nozzle via connecting air pipe IV, which is used to deliver the silver paste to the high-pressure atomizing nozzle under positive pressure; connecting air pipe II, connecting air pipe III and connecting air pipe IV constitute a positive pressure air circuit system;

[0010] The three-axis programmable mobile platform has a silver paste spraying device fixedly installed on the Z-axis moving part of the platform. The device is controlled by the program to move precisely in the X, Y, and Z directions, so as to realize the automated and programmed silver preparation spraying of ceramic parts fixed on the silver spraying fixture plate.

[0011] In one embodiment of this utility model, the silver spraying tooling plate is provided with 25 positioning holes arranged in 5 rows and 5 columns, and the shape of each positioning hole is adapted to the shape of the arc-shaped ceramic part.

[0012] In one embodiment of this utility model, the silver-sprayed tooling plate is a replaceable structure, equipped with various specifications to adapt to ceramic parts of different sizes.

[0013] In one embodiment of this utility model, the negative pressure base plate is provided with a positioning structure for the rapid positioning and installation of the silver spraying tooling plate.

[0014] In one embodiment of this utility model, the connecting air pipe I is a negative pressure pipe, and the connecting air pipes II, III and IV are all positive pressure pipes.

[0015] Compared with the prior art, the above-mentioned technical solution of this utility model has the following advantages: The arc-shaped ceramic sheet silver spraying fixture of this utility model, combined with a three-axis programmable platform and multi-station design, realizes the simultaneous automatic spraying of 25 ceramic sheets, completely replacing the inefficient manual silver brushing and greatly improving production capacity; and through negative pressure adsorption to accurately fix the workpiece, combined with high-pressure atomization spraying and program control, it ensures that the silver paste coating is uniform and dense, effectively solving the problem of inconsistent thickness caused by manual operation; the modular design of the replaceable fixture plate can quickly adapt to ceramic sheets of different sizes and curvatures, realizing multi-purpose use and flexible production. The positive pressure feeding and atomization system and the negative pressure fixing system are independent of each other and work together. The air pressure is precisely adjustable, ensuring the stability and repeatability of the spraying process and meeting the requirements of mass production. Attached Figure Description

[0016] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0017] Figure 1 This is an assembly diagram of the arc-shaped ceramic sheet silver spraying fixture of this utility model;

[0018] Figure 2 This is a schematic diagram of the three-axis programmable platform and silver paste spraying device described in this utility model;

[0019] Figure 3 This is a schematic diagram of the negative pressure base plate described in this utility model;

[0020] Figure 4 This is a schematic diagram of the silver spraying tooling plate described in this utility model.

[0021] As shown in the figure: 1. Negative pressure base plate; 2. Silver spraying tooling plate; 3. Three-axis programmable moving platform; 4. Negative pressure vacuum pump; 5a. Connecting air pipe I; 5b. Connecting air pipe II; 5c. Connecting air pipe III; 5d. Connecting air pipe IV; 6. Silver paste storage needle; 7. High-pressure atomizing nozzle; 8. Pressure dividing port. Detailed Implementation

[0022] like Figure 1 As shown, this embodiment provides a silver coating fixture for curved ceramic wafers, mainly used to solve the problem of high-quality and high-efficiency silver coating on the surface of curved piezoelectric ceramic wafers such as bowl-shaped and spherical wafers. The fixture mainly includes a negative pressure base plate 1, a silver coating fixture plate 2, a three-axis programmable moving platform 3, a negative pressure vacuum pump 4, and a silver paste coating device.

[0023] The negative pressure base plate 1 is fixedly installed on the XY plane worktable of the three-axis programmable moving platform 3 by bolts. The negative pressure base plate 1 has a vacuum channel machined inside, and its upper surface is evenly distributed with negative pressure adsorption holes communicating with the vacuum channel. An air inlet for connecting to the negative pressure air circuit is provided on the side.

[0024] The silver-spraying fixture plate 2 is made of corrosion-resistant material and is detachably placed on the upper surface of the negative pressure base plate 1. A positioning frame or positioning pin, as shown in Figure 3, is provided on the negative pressure base plate 1 to ensure that the silver-spraying fixture plate 2 can be positioned quickly and accurately. In this embodiment, as shown... Figure 4 As shown, the silver-sprayed fixture plate 2 has 25 positioning holes in 5 rows and 5 columns that are adapted to the shape of the bowl-shaped ceramic parts, thus enabling the simultaneous clamping and operation of multiple ceramic parts. For ceramic parts of different sizes, silver-sprayed fixture plates 2 with positioning holes of different specifications can be replaced.

[0025] The negative pressure vacuum pump 4 is connected to the air inlet of the negative pressure base plate 1 via the connecting air pipe I 5a. When the negative pressure vacuum pump 4 is started, the negative pressure is transmitted to the adsorption hole through the vacuum cavity, generating an adsorption force to firmly fix the ceramic part placed in the positioning hole of the silver spraying tool plate 2, preventing it from shifting during the spraying process.

[0026] like Figure 2As shown, the silver paste spraying device consists of a silver paste storage needle tube 6 and a high-pressure atomizing nozzle 7. This device is fixed to the Z-axis moving part of a three-axis programmable moving platform 3 via a mounting bracket. The high-pressure atomizing nozzle 7 is connected to the output pressure divider port of the moving platform via connecting air pipes II 5b and III 5c. A pressure regulator is installed at the front end of this pressure divider port, which can precisely adjust and stabilize the air pressure at 0.4 MPa, providing a stable positive pressure air source for atomization. The silver paste storage needle tube 6 and the high-pressure atomizing nozzle 7 are connected via connecting air pipe IV 5d. During operation, the positive pressure gas provided by connecting air pipes II 5b and III 5c is partly used to drive the high-pressure atomizing nozzle 7 to produce an atomization effect, and the other part acts on the upper part of the silver paste storage needle tube 6 through connecting air pipe IV 5d, smoothly pressurizing the silver paste to the high-pressure atomizing nozzle 7 to achieve atomized spraying.

[0027] Here, the gas path relationship is clear: the connecting air pipe I 5a is a negative pressure pipe used to fix the workpiece; the connecting air pipes II 5b, III 5c and IV 5d are all positive pressure pipes, which together constitute the power system for silver paste delivery and atomization.

[0028] The working process of the spraying fixture described in this embodiment is as follows:

[0029] Place the cleaned bowl-shaped ceramic pieces one by one into the positioning holes of the silver-sprayed tooling plate 2.

[0030] Place the silver-sprayed fixture plate 2 with the workpiece installed into the positioning frame of the negative pressure base plate 1.

[0031] Start the negative pressure vacuum pump 4, and the ceramic part is adsorbed and fixed.

[0032] Start the three-axis programmable mobile platform 3. The equipment runs according to the preset program, driving the silver paste spraying device to automatically and evenly spray silver onto the stationary ceramic parts.

[0033] After the spraying is completed, the equipment is reset, the negative pressure vacuum pump is turned off, the entire silver spraying fixture plate 2 is removed, and it is moved into the oven along with the ceramic parts for curing and drying.

[0034] In summary, the arc-shaped ceramic sheet silver coating fixture of this embodiment has fully automatic and programmable coating functions, which significantly improves production efficiency and silver layer consistency, and is suitable for mass chemical production.

[0035] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A tooling for preparing arc-shaped ceramic sheets for silver spraying, characterized in that, include: The negative pressure base plate (1) is fixedly installed on the three-axis programmable moving platform (3). It has a vacuum channel inside and has an air port for connecting the negative pressure air path and multiple negative pressure adsorption holes connected to the vacuum channel. The silver-sprayed tooling plate (2) is detachably installed on the upper surface of the negative pressure base plate (1), and has a plurality of positioning holes corresponding to the negative pressure adsorption holes. The negative pressure vacuum pump (4) is sealed to the air port of the negative pressure base plate (1) through the connecting air pipe I (5a); The silver paste spraying device includes a silver paste storage needle (6) and a high-pressure atomizing nozzle (7), and is connected to the output pressure distribution port (8) of the mobile platform via connecting air pipe II (5b) and connecting air pipe III (5c), at which a pressure regulator is provided; Meanwhile, the silver paste storage needle (6) and the high-pressure atomizing nozzle (7) are connected by a connecting air pipe IV (5d) to deliver the silver paste to the high-pressure atomizing nozzle (7) under positive pressure; the connecting air pipe II (5b), the connecting air pipe III (5c) and the connecting air pipe IV (5d) constitute a positive pressure air circuit system; A three-axis programmable moving platform (3) is provided, wherein the silver paste spraying device is fixedly installed on the Z-axis moving part of the platform.

2. The silver spraying fixture for the arc-shaped ceramic sheet according to claim 1, characterized in that: The silver spraying tooling plate (2) has 25 positioning holes arranged in 5 rows and 5 columns, and the shape of each positioning hole is adapted to the shape of the arc-shaped ceramic part.

3. The silver spraying fixture for the arc-shaped ceramic sheet according to claim 1, characterized in that: The silver-sprayed tooling plate (2) is a replaceable structure and is equipped with various specifications to adapt to ceramic parts of different sizes.

4. The silver spraying fixture for the arc-shaped ceramic sheet according to claim 1, characterized in that: The negative pressure base plate (1) is provided with a positioning structure for the rapid positioning and installation of the silver spraying tooling plate (2).

5. The silver spraying fixture for the arc-shaped ceramic sheet according to claim 1, characterized in that: The connecting air pipe I (5a) is a negative pressure pipe, while the connecting air pipes II (5b), III (5c) and IV (5d) are all positive pressure pipes.

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