Casting box device
By optimizing the structural design of the casting box device, ensuring the slurry level, the problem of uneven casting green blank thickness is solved, improving the green blank qualification rate and production efficiency, which is particularly suitable for the semiconductor electronics industry.
Patent Information
- Application Number
- CN202423058873.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-11
AI Technical Summary
In existing casting box devices, inconsistent slurry surface height during casting results in uneven casting green blank thickness, affecting the green blank yield. This is especially problematic in the semiconductor and electronics industry where material flatness is critical, leading to increased waste from edge trimming.
A casting box device was designed, comprising a first storage tank and a second storage tank. By setting a feed hole, an overflow port and a discharge ramp, the liquid level of the slurry is ensured to remain horizontal during the casting process to avoid height differences. The design of feed holes of the same size and height and overflow ports of different heights optimizes the proportion of the storage tanks to improve the uniformity of the slurry.
It effectively eliminates the problem of inconsistent surface height of the slurry, improves the thickness uniformity and pass rate of the cast green body, reduces edge trimming waste, and improves production efficiency.
Smart Images
Figure CN223589705U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to ceramic flow casting device technical field, especially in kind of flow casting box device. BACKGROUND
[0002] The flow casting machine is a special equipment for making flow casting green body, ceramic flow casting uses ceramic powder such as Al2O3, AlN as the main raw material, first, ceramic powder with certain fineness and various additives (such as sintering aid, binder, plasticizer, dispersant and solvent) are mixed to make slurry with uniform dispersion and certain viscosity, after degassing, the slurry is flowed from the flow casting box, and is coated on the special PET base tape by scraper with certain thickness, after drying and solidification in multiple temperature zones, the ceramic green tape is peeled off from the PET base tape to become a thin film, and then according to the size and shape of the finished product, the ceramic green tape is cut, hot-pressed and stacked for machining treatment to make the green ceramic product with certain strength and density.
[0003] The existing flow casting box structure, in the flow casting process, the slurry flows into the tank from the slurry inlet under the action of pressure, when the slurry fills the tank, it will overflow the overflow platform into the flow casting groove between the inclined surface of the flow casting box and the scraper, and then flow out through the gap between the scraper and the PET base tape after drying in multiple temperature zones to obtain the flow casting film.
[0004] However, the slurry used for flow casting has high viscosity, for example, the viscosity of AlN is usually 10000-20000 mPa·s, and large surface tension, when the slurry enters the storage tank, due to the surface tension, the surface shape of the slurry will form a state of high in the middle and low on both sides, and after entering the flow casting groove from the overflow platform, it is also in a state of high in the middle and low on both sides, and when the slurry passes through the scraper, the height difference of the slurry surface will cause the shear force received by the slurry passing through the scraper to be inconsistent (the slurry is also a shear thinning fluid), and then the viscosity of the slurry will be greatly different, which will cause the flow casting film to be thick in the middle and thin on both sides, and the thickness difference is more than 20%, because flow casting is generally used in the semiconductor electronic industry, and the flatness of the material has very high requirements, therefore, it is necessary to perform edge cutting processing, and the waste ratio of edge cutting will gradually increase with the decrease of the flow casting width, which leads to low green body qualification rate, and how to eliminate the phenomenon of inconsistent height of the slurry surface after entering the flow casting groove and inconsistent height of the flow casting green ceramic tape and improve the qualification rate has become a problem to be solved. SUMMARY
[0005] The technical problem to be solved by the utility model is to provide a flow casting box device to solve the problem in the background art.
[0006] In order to solve the above technical problems, the technical scheme of the utility model is as follows:
[0007] The application discloses a kind of flow casting box device, including box body, first storage tank and second storage tank are arranged in the box body, top of the box body is equipped with top plate, the top plate is located the first storage tank, the second storage tank is above, the rear side of the box body is equipped with back plate, the back plate is equipped with with the first storage tank The feed hole of communication, the first storage tank is communicated with the second storage tank by first overflow port, the box body further includes discharge inclined plane, the second storage tank is communicated with the discharge inclined plane by second overflow port, the bottom of the discharge inclined plane is equipped with flow casting cutter head.
[0008] Preferably, the feed hole includes a first feed hole and a second feed hole, the size and height of the first feed hole and the second feed hole are the same.
[0009] Preferably, the height of the first feed hole and the second feed hole is higher than the bottom of the first storage tank, and the distance between the lowest part of the first feed hole and the bottom of the first storage tank is 5-10 mm.
[0010] Preferably, the height of the first overflow port is higher than the height of the second overflow port.
[0011] Preferably, the height-width ratio of the first storage tank is 2:1-4.5:1.
[0012] Preferably, the height-width ratio of the second storage tank is 1:3-1:5.
[0013] The above technical scheme has the following beneficial effects:
[0014] The application solves the problem of inconsistent slurry surface height after the slurry enters the flow casting groove in the prior art, resulting in uneven thickness of the flow casting green body, and improves the qualified rate of the flow casting green body. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a front view of the application, a flow casting box device, a schematic view of the cross-sectional structure.
[0016] Figure 2 It is a left view of the application, a flow casting box device, a schematic view of the cross-sectional structure. DETAILED DESCRIPTION
[0017] The specific embodiments of the application will be further described below with reference to the drawings. It should be noted that the description of these embodiments is used to help understand the application, but does not constitute a limitation on the application. In addition, the technical features involved in each embodiment of the application described below can be combined with each other as long as they do not conflict with each other.
[0018] REFERENCE Figure 1 ,Figure 2 The casting box device comprises a box body 1, a first storage tank 5 and a second storage tank 6 are arranged in the box body 1, a top plate 2 is arranged at the top of the box body 1 and is located above the first storage tank 5 and the second storage tank 6, a back plate 3 is arranged at the back side of the box body 1, the back plate 3 is provided with a feeding hole communicated with the first storage tank 5, the first storage tank 5 and the second storage tank 6 are communicated through a first overflow port 7, and the box body 1 further comprises a discharging inclined surface 10, the second storage tank 6 and the discharging inclined surface 10 are communicated through a second overflow port 8, and the bottom of the discharging inclined surface 10 is provided with a casting knife head 9;
[0019] The slurry enters the first storage tank 5 through the first feeding hole 4 and the second feeding hole 11, and then enters the second storage tank 6 through the first overflow port 7, the liquid level of the slurry is scraped flat by the first overflow port 7 and the second overflow port 8, so that the liquid level of the slurry remains horizontal during the process of filling the first storage tank 5 and the second storage tank 6, and the liquid level of the slurry remains horizontal until the slurry overflows the second storage tank 6 and flows out from the overflow platform, and the quality of the casting is good;
[0020] The feeding hole comprises the first feeding hole 4 and the second feeding hole 11, the size and height of the first feeding hole 4 and the second feeding hole 11 are the same, and the problem that the existing technology causes the feeding to be low on both sides and high in the middle in the first storage tank 5 is solved;
[0021] The height of the first feeding hole 4 and the second feeding hole 11 is higher than the bottom of the first storage tank 5, the distance between the lowest part of the first feeding hole 4 and the bottom of the first storage tank 5 is 5mm-10mm, and the actual size used can be set according to needs;
[0022] The height of the first overflow port 7 is higher than the height of the second overflow port 8, specifically, the height of the lowest surface of the first overflow port 7 is 3mm-8mm higher than the height of the lowest surface of the second overflow port 8, and the actual size used can be set according to needs;
[0023] In order to reduce the waste of slurry and improve the uniformity of the thickness of the casting green body, the height-width ratio of the first storage tank 5 is 2:1-4.5:1, and the height-width ratio of the second storage tank 6 is 1:3-1:5;
[0024] The application solves the problem that the surface height of the slurry is inconsistent after the slurry enters the casting groove in the prior art, and the thickness of the casting green body is not uniform, and improves the qualified rate of the casting green porcelain belt.
[0025] The embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments are made without departing from the principles and spirits of the present application, and still fall into the protection scope of the present application.
[0026] The embodiments of the present application are described in detail in combination with the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations of the embodiments are made without departing from the principles and spirits of the present application, and still fall into the protection scope of the present application.
Claims
1. A casting shoe apparatus, characterized by, The device includes a box body (1), which has a first storage tank (5) and a second storage tank (6). The top of the box body (1) is provided with a top plate (2), which is located above the first storage tank (5) and the second storage tank (6). The rear side of the box body (1) is provided with a rear plate (3), which has a feed hole communicating with the first storage tank (5). The first storage tank (5) and the second storage tank (6) are connected through a first overflow port (7). The box body (1) also includes a discharge ramp (10), which is connected to the second storage tank (6) through a second overflow port (8). The bottom of the discharge ramp (10) is provided with a casting cutter head (9).
2. A casting box apparatus according to claim 1, wherein The feed hole includes a first feed hole (4) and a second feed hole (11), and the first feed hole (4) and the second feed hole (11) have the same size and height.
3. The casting box apparatus according to claim 2, characterized in that, The height of the first feed hole (4) and the second feed hole (11) is higher than the bottom of the first storage tank (5), and the distance between the lowest point of the first feed hole (4) and the bottom of the first storage tank (5) is 5mm to 10mm.
4. The casting box apparatus according to claim 1, characterized in that, The height of the first overflow port (7) is higher than the height of the second overflow port (8).
5. The casting box apparatus according to claim 1, characterized in that, The height to width ratio of the first storage tank (5) is 2:1 to 4.5:
1.
6. The casting box apparatus according to claim 1, characterized in that, The height to width ratio of the second storage tank (6) is 1:3 to 1:5.