Tape casting device

Abstract

The invention discloses a tape casting device. The tape casting device is characterized by comprising a film belt which is attached to the horizontal surface of a working platform and is dragged to be conveyed, wherein a storage tank is arranged above the film belt and is surrounded by side plates of the storage tank and a scraper jointly; the scraper is positioned on the rear side of the storage tank; the bottom surfaces of the side plates of the storage tank is closely attached to the film belt; a tape casting gap is reserved between the bottom of the scraper and the film belt; the scraper is provided with an arc bottom; a front knife groove and a rear knife groove are formed in the arc bottom to form a double-knife-bit structure of the scraper; a liquid level sensor is arranged above the storage tank; an adjusting tank is arranged on the front side of the storage tank and is connected with a slurry supply pipe; a control valve is mounted on the slurry supply pipe and is electrically connected with the liquid level sensor; the front side plate of the storage tank is inclined to form an inclined plane; and overflowed slurry in the adjusting tank enters the storage tank through the inclined plane. By the tape casting device, smoothness of surfaces of blanks in a tape casting process can be guaranteed, and the thicknesses of the blanks are even to meet efficient and high-quality production of zirconium oxide substrates.

Description

Technical field [0001] The invention relates to the technical field of zirconia sensors, in particular to a casting device used for the production of zirconia substrates. Background technique [0002] The zirconium oxide sensor is used to measure the amount of residual oxygen in the combustion process of automobiles. It plays an active role in reducing environmental pollution and improving combustion efficiency. The key component of the zirconium oxide sensor is the zirconium oxide chip. The zirconium oxide chip adopts a multi-layer zirconia substrate up and down stacking process. In the prior art, the zirconia substrate is produced by casting. In the casting stage of the casting production, a flat scraper with a single cutter head is usually used to smooth the surface of the slurry to form a blank. It is difficult to control the viscosity and rheological properties, so the surface of the blank is prone to have surface stripes during the casting stage, and the thickness is not u...

AI Technical Summary

Problems solved by technology

In the prior art, zirconia substrates are produced by tape casting. In the casting stage of tape casting production, a flat scraper with a single blade is usually used to scrape the surface of the slurry to form a billet. It is difficult to control the viscosity and rheological properties, so the surface of the green sheet is prone to surface streaks during the casting stage, and the thickness is uneven; in addition, when the storage tank is continuously fed through multiple feeding pipes, the slurry is Mixing will also lead to short-range order because the slurry cannot be kept uniform during the movement process, causing streaks on the surface of the green sheet

The above factors will lead to the inability to meet the high-efficiency and high-quality production of zirconia substrates.

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