Ceramic blank piece gel casting mold

Abstract

The utility model discloses a gel casting mold for a ceramic blank piece, and relates to the technical field of ceramics. According to the technical scheme, the device comprises a plurality of base plates, L-shaped filler strips are arranged on the two opposite sides of the base plates respectively, the base plates are separated by the filler strips and stacked from left to right, a gap between the bottoms of every two filler strips serves as a grouting opening of a mold, a grouting box is arranged at the grouting opening, an opening is formed in the top of the grouting box, and the grouting box is connected with a sealing tank through a hose. The sealing tank is filled with ceramic slurry, and the top of the sealing tank is connected with an air compressor through a pipeline. According to the utility model, the injection mode of ceramic slurry is changed from the original top injection mode to the bottom injection mode, so that the problem that defects are formed on a ceramic blank sheet due to bubbles easily generated by top injection is solved; and meanwhile, a slurry injection box, an air compressor, a sealing tank and a bottom injection mode are combined, so that the ceramic slurry injection time is shortened, and the forming efficiency of ceramic blank pieces is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ceramics, in particular to a ceramic blank gel injection molding die. Background Art

[0002] When gel injection molding is used for ceramic green sheets, ceramic powder is first mixed with an appropriate amount of solvent, dispersant and gelling agent to prepare a ceramic slurry with a certain viscosity; then a suitable mold is selected for the injection and molding of the ceramic slurry, and finally the ceramic slurry gel is solidified to obtain a ceramic green sheet. At present, the ceramic slurry is usually injected into the molding cavity from the top of the mold. Under the action of gravity, the ceramic slurry flows naturally from top to bottom and gradually fills the entire molding cavity. During the flow of the ceramic slurry, a large number of bubbles are easily generated due to factors such as top injection. These bubbles will form defects in the ceramic green sheet and affect the strength and appearance of the ceramic. Especially for ceramic green sheets with a thickness of less than 0.6 mm, due to the high viscosity of the ceramic slurry, its fluidity is poor. In the small gap of the mold, it is difficult for the ceramic slurry to fully flow, resulting in molding difficulties. In addition, since it is necessary to wait for the ceramic slurry to flow naturally, the entire molding process is time-consuming and inefficient.

[0003] In view of the above problems existing in the existing molds, it is necessary to design a ceramic green sheet gel injection molding mold which is not easy to generate bubbles during the injection process and has high efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the shortcomings of the prior art, to provide a ceramic green sheet gel injection molding die, to change the injection method of the ceramic slurry from the original top injection to the bottom injection, and to solve the problem that the top injection is prone to generate bubbles and cause defects in the ceramic green sheet; at the same time, the utility model combines a slurry injection box, an air compressor, and a sealing tank with a bottom injection method, and relies on compressed air to press the ceramic slurry into the molding cavity, which shortens the ceramic slurry injection time and improves the molding efficiency of the ceramic green sheet.

[0005] The technical solution of the utility model is:

[0006] The ceramic green sheet gel injection molding mold comprises a plurality of substrates, L-shaped pads are respectively arranged on opposite sides of the substrates, the plurality of substrates are separated by the pads and stacked from left to right, the gap between the bottoms of the two pads is the grouting port of the mold, a grouting box is arranged at the grouting port, an opening is arranged at the top of the grouting box and the grouting box is connected to a sealing tank through a hose, the sealing tank is filled with ceramic slurry, and the top of the sealing tank is connected to an air compressor through a pipeline.

[0007] Preferably, the cushion strip is adhered to the substrate by 3M adhesive.

[0008] Preferably, a sealing ring is provided at the edge of the top opening of the grouting box.

[0009] Preferably, the grouting box is provided with a slurry inlet, a feed pipe is provided at the slurry inlet, the feed pipe is connected to a hose and a ball valve is provided on the feed pipe.

[0010] Preferably, the sealed tank is provided with a slurry outlet, and a discharge pipe is provided at the slurry outlet. The discharge pipe is connected to a hose and extends into the lower part of the sealed tank.

[0011] Preferably, the substrate is a float glass substrate.

[0012] Preferably, the pad is made of rubber or PVC.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The ceramic green sheet gel injection molding mold of the utility model is located at the bottom of the molding cavity through the gap between the two pads on the substrate, and the injection method of the ceramic slurry is changed from the original top injection to the bottom injection, which solves the problem that the top injection is prone to generate bubbles and cause defects in the ceramic green sheet. At the same time, the utility model combines the injection box, the air compressor, the sealing tank and the bottom injection method, so that when the ceramic slurry fills the entire molding cavity, it no longer depends on the natural flow of the ceramic slurry, but relies on compressed air to press the ceramic slurry into the molding cavity, which shortens the injection time of the ceramic slurry and improves the molding efficiency of the ceramic green sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of a ceramic green sheet gel injection molding die.

[0016] Figure 2 It is a front view of the substrate of the utility model.

[0017] Figure 3 It is a side view of the substrate of the utility model.

[0018] Figure 4 It is a top view of the substrates in the utility model after being stacked together.

[0019] Figure 5 It is a top view of the grouting box of the utility model.

[0020] In the figure, 1, substrate; 2, pad; 3, 3M glue; 4, grouting port; 5, grouting box; 501, opening; 502, feed pipe; 6, sealing ring; 7, hose; 8, sealing tank; 801, discharge pipe; 9, ceramic slurry; 10, air compressor; 11, ball valve; 12, molding cavity. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention.

[0022] Example 1

[0023] This embodiment provides a ceramic green sheet gel injection molding mold, such as Figure 1-3 As shown, it includes several substrates 1 made of float glass. Float glass is made of sea sand, quartz sandstone powder, soda ash, dolomite and other raw materials. After being melted at high temperature in a melting furnace, the glass liquid flows continuously from the tank furnace to float on the tin liquid surface, spread into a glass strip with uniform thickness and polished by fire, and then separated from the tin liquid after cooling and hardening, and then annealed and cut into transparent colorless flat glass. Float glass can ensure the uniformity of the overall thickness of the substrate 1. Figure 1-3 As shown, L-shaped rubber or PVC pads 2 are respectively adhered to the opposite sides of the substrate 1 by 3M adhesive 3, and the top and bottom of the pads 2 correspond to the top and bottom of the substrate 1. The overall thickness of the 3M adhesive is uniform, which can ensure that the thickness of the prepared ceramic green sheet is uniform; and its strong bonding force and waterproofness are very suitable for the production conditions of the ceramic green sheet gel injection molding mold of this embodiment.

[0024] like Figure 4 As shown, a plurality of substrates 1 are separated by pads 2 and stacked from left to right, so that the gaps between the substrates 1 form a molding cavity 12; Figure 2 As shown, the gap between the bottoms of the two pads 2 is the grouting port 4 of the mold. Figure 1 , 5 As shown, a slip box 5 is placed at the bottom slip port 4, and an opening 501 is provided at the top of the slip box 5. The size of the opening 501 should be able to cover all the slip ports 4 at the bottom of the substrate 1, so that the ceramic slurry 9 in the slip box 5 can smoothly enter the molding cavity 12 through the opening 501 and the slip port 4.

[0025] like Figure 1 , 5 As shown, a slurry inlet is provided on one side of the grouting box 5, and a stainless steel feed pipe 502 is provided at the slurry inlet, the feed pipe 502 is connected to a hose 7 and a ball valve 11 is provided on the feed pipe 502. The other end of the hose 7 is connected to the sealed tank 8, and the sealed tank 8 is provided with a slurry outlet, and a discharge pipe 801 is provided at the slurry outlet, and the discharge pipe 801 is connected to the hose 7 and extends into the lower part of the sealed tank 8. The sealed tank 8 is filled with ceramic slurry 9, and the top of the sealed tank 8 is connected to an air compressor 10 through a pipeline.

[0026] Working principle:

[0027] Several substrates 1 are stacked together from left to right, and the substrates 1 are separated by pads 2. The grouting port 4 is at the bottom and placed at the top opening 501 of the grouting box 5. Then, the ball valve 11 on the feed pipe 502 of the grouting box 5 is opened, and the air compressor 10 is turned on to introduce compressed air to the top of the sealed tank 8, so that the ceramic slurry 9 in the sealed tank 8 enters the hose 7 from the bottom through the discharge pipe 801, and enters the grouting box 5 through the feed pipe 502. With the continuous injection of compressed air, the ceramic slurry 9 entering the grouting box 5 overflows and is pressed into the molding cavity 12 between each substrate 1 through the grouting port 4. The grouting time can be preset in the control system. When the grouting time reaches the preset grouting time, the ball valve 11 and the air compressor 10 are controlled to be closed. At this time, the ceramic slurry 9 fills each molding cavity 12, and then the ceramic slurry 9 is left to stand and wait for the gel of the ceramic slurry 9 to solidify to form a ceramic green sheet.

[0028] Example 2

[0029] On the basis of Example 1, Figure 5 As shown, a sealing ring 6 is provided at the edge of the top opening 501 of the grouting box 5, and the area enclosed by the sealing ring 6 is larger than the area formed by the grouting ports 4 at the bottom of all substrates 1, thereby ensuring that the ceramic slurry 9 does not leak when entering the molding cavity 12 from the grouting ports 4.

Claims

1. A ceramic green sheet gel casting mold, characterized in that: The invention comprises a plurality of base plates (1), wherein L-shaped pads (2) are respectively arranged on opposite sides of the base plates (1), the plurality of base plates (1) are separated by the pads (2) and stacked from left to right, the gap between the bottoms of the two pads (2) is a grouting port (4) of the mold, a grouting box (5) is arranged at the grouting port (4), an opening (501) is arranged at the top of the grouting box (5), and the grouting box (5) is connected to a sealing tank (8) via a hose (7), the sealing tank (8) is filled with ceramic slurry (9), and the top of the sealing tank (8) is connected to an air compressor (10) via a pipeline.

2. The ceramic green sheet gel casting mold according to claim 1, characterized in that: The cushion strip (2) is adhered to the base plate (1) by means of 3M glue (3).

3. The ceramic green sheet gel casting mold according to claim 1, characterized in that: A sealing ring (6) is provided at the edge of the top opening (501) of the grouting box (5).

4. The ceramic green sheet gel casting mold according to claim 1, characterized in that: The grouting box (5) is provided with a slurry inlet, and a feed pipe (502) is provided at the slurry inlet. The feed pipe (502) is connected to the hose (7) and a ball valve (11) is provided on the feed pipe (502).

5. The ceramic green sheet gel casting mold according to claim 1, characterized in that: The sealed tank (8) is provided with a slurry outlet, and a discharge pipe (801) is provided at the slurry outlet. The discharge pipe (801) is connected to the hose (7) and extends into the lower part of the sealed tank (8).

6. The ceramic green sheet gel casting mold according to claim 1, characterized in that: The substrate (1) is a float glass substrate (1).

7. The ceramic green sheet gel casting mold according to claim 1, characterized in that: The cushion strip (2) is made of rubber or PVC material.

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