A powder tableting mold

Abstract

This utility model provides a powder tableting mold, comprising: a base; a first gasket connected to the base; a mold cylinder disposed on the base; a second gasket including multiple second sub-gaskets, which are joined together to form the second gasket, the second gasket including a second cavity, the second gasket being disposed in the first cavity inside the mold cylinder; a pressure column disposed in the second cavity; and a pressure cap connected to the pressure column; wherein, the powder material is disposed in the second cavity, and when the pressure cap is subjected to external pressure, the pressure column compresses the powder material into shape.

Description

Technical Field

[0001] This utility model relates to the field of powder forming technology, specifically to a powder tableting mold. Background Technology

[0002] Powder molds are mostly cylindrical. During tableting, the powder is placed between a spacer and a pressing column, and then pressed into shape under external pressure. Under specific conditions, the shape and size of the pressed product also have strict requirements, thus requiring a molding die that matches the corresponding shape. In the thermoelectric field, to ensure more accurate Seebeck coefficient measurements, cylindrical test samples are usually required. If the mold cylinder and pressing column are designed to be circular, as described above with conventional powder molds, the pressing of cylindrical samples can be easily achieved.

[0003] However, the design of the powder mold also brings some problems: First, because the pressed sample is long and powder tends to stick to the inside of the mold, the sample is prone to breakage when demolding; second, the powder stuck inside the mold is difficult to clean and will contaminate the pressed samples later. Utility Model Content

[0004] To achieve the above objectives, this utility model provides a powder tableting mold, comprising: a base; a first gasket connected to the base; a mold cylinder disposed on the base; a second gasket including multiple second sub-gaskets, which are joined together to form the second gasket, the second gasket including a second cavity, the second gasket being disposed in the first cavity within the mold cylinder; a pressure column disposed within the second cavity; and a pressure cap connected to the pressure column; wherein, the powder material is disposed within the second cavity, and when the pressure cap is subjected to external pressure, the pressure column compresses the powder material into shape.

[0005] In the above scheme, the outer part of the mold cylinder is cylindrical, and the first cavity inside the mold cylinder is conical.

[0006] In the above scheme, the second gasket is a cone, and the size of the second gasket is adapted to the size of the first cavity so that the second gasket can be placed in the first cavity.

[0007] In the above scheme, the second gasket can be disassembled into multiple second sub-gaskets.

[0008] In the above scheme, the second cavity is a cylinder, and the cross-section of the second cavity facing the pressure column is circular, and the radius of the circle can be adjusted as needed.

[0009] In the above scheme, the pressure column is a cylinder, and the cross-section of the pressure column facing the second cavity is adapted to the cross-section of the second cavity facing the pressure column so that the pressure column can be placed in the second cavity and move.

[0010] In the above scheme, the length of the pressure column along the moving direction of the second cavity is adjustable and can satisfy the requirement that the powder material in the second cavity is pressed into shape.

[0011] In the above scheme, the pressure cap is a cylinder, and the cross-sectional radius of the pressure cap facing the pressure column is greater than the cross-sectional radius of the pressure column facing the second cavity; the pressure cap is fixed to the pressure column; the pressure cap is connected to an external pressure device.

[0012] In the above scheme, both the base and the first pad are cylinders; the cross-sectional radius of the base facing the mold cylinder is greater than the cross-sectional radius of the first pad facing the base.

[0013] The technical solution of this utility model embodiment has at least the following beneficial effects:

[0014] (1) The molding cavity of the powder tablet mold is composed of multiple sub-gaskets, which are easy to disassemble. The demolding process is not affected by friction, making demolding easy and preventing sample breakage.

[0015] (2) The powder adhering to the inside of the molding cavity is easy to clean.

[0016] (3) The structure of the powder tableting mold is simple and the manufacturing cost is low. Attached Figure Description

[0017] Figure 1 A perspective view of a powder tableting mold according to an embodiment of the present invention is shown schematically;

[0018] Figure 2 A three-dimensional cross-section of a powder tableting mold according to an embodiment of the present invention is schematically shown;

[0019] Figure 3 The diagram schematically shows a cross-sectional view and a front view of a powder tableting mold according to an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 A perspective view of a powder tableting mold according to an embodiment of the present invention is shown schematically. Figure 2 A three-dimensional cross-section of a powder tableting mold according to an embodiment of the present invention is shown schematically. Figure 3 The diagram schematically shows a cross-sectional view and a front view of a powder tableting mold according to an embodiment of the present invention.

[0022] like Figure 1As shown, the powder tableting mold includes: a base 1; a first gasket 2 connected to the base 1; a mold cylinder 3 disposed on the base 1; a second gasket including multiple second sub-gaskets 4, which are bonded together to form the second gasket, the second gasket including a second cavity 8, which is disposed in the first cavity 7 inside the mold cylinder 3; a pressure column 5 disposed in the second cavity 8; and a pressure cap 6 connected to the pressure column 5.

[0023] In this embodiment, the powder material is placed inside the second cavity 8. When the pressure cap 6 is subjected to external pressure, the pressure column 5 presses the powder material into shape.

[0024] Specifically, such as Figures 1 to 3 As shown, both the base 1 and the first pad 2 are cylinders. The cross-sectional radius of the base 1 facing the mold cylinder 3 is greater than the cross-sectional radius of the first pad 2 facing the base 1.

[0025] Preferably, the first gasket 2 is fixedly connected to the base 1, that is, the base 1 and the first gasket 2 are integrated into one unit. The fact that the base and the first gasket are integrated into one unit ensures that the base and the first gasket do not undergo relative displacement under high pressure.

[0026] Please continue reading. Figures 1 to 3 The outer part of the mold cylinder 3 is cylindrical, and the first cavity 7 inside the mold cylinder 3 is conical.

[0027] Furthermore, a second gasket is provided within the first cavity 7. This second gasket is formed by bonding together multiple second sub-gaskets 4. For example, the second gasket can be formed by bonding together two or three second sub-gaskets 4. It is understood that the second gasket can be disassembled into multiple second sub-gaskets 4.

[0028] like Figure 2 and 3 As shown, the second gasket is a cone, and the size of the second gasket is adapted to the size of the first cavity 7 so that the second gasket can be locked inside the first cavity 7.

[0029] Furthermore, the second gasket has a second cavity 8, which is cylindrical. For example... Figure 3 As shown, the cross-section of the second cavity 8 facing the pressure column 5 is circular, and the radius of the circle can be adjusted as needed.

[0030] Please continue reading. Figures 1 to 3The pressure column 5 is a cylinder and is disposed within the second cavity 8. The cross-section of the pressure column 5 facing the second cavity 8 is adapted to the cross-section of the second cavity 8 facing the pressure column 5, allowing the pressure column 5 to be disposed within the second cavity 8 and to move. Similarly, after the first gasket 2 is fixed to the base 1, the cross-section of the first gasket 2 facing the base 1 is adapted to the cross-section of the second cavity 8 facing the base 1, allowing the first gasket 2 to be disposed within the second cavity 8. This allows the base to be fixed to the first gasket and then connected to the second gasket.

[0031] In this embodiment, the length of the pressure column 5 along the moving direction of the second cavity 8 is adjustable and can satisfy the requirement that the powder material in the second cavity 8 is pressed into shape.

[0032] Preferably, the length of the pressure column 5 is greater than the length of the second cavity 8 in the direction of movement of the second cavity 8, so as to facilitate pressing and demolding.

[0033] Preferably, the cross-section of the pressure column 5 facing the second cavity 8 and the cross-section of the second cavity 8 facing the pressure column 5 can be adjusted as needed to facilitate application in various environments.

[0034] Please continue reading. Figures 1 to 3 The pressure cap 6 is a cylinder, and the cross-sectional radius of the pressure cap 6 facing the pressure column 5 is greater than the cross-sectional radius of the pressure column 5 facing the second cavity 8.

[0035] Furthermore, the pressure cap 6 is fixedly connected to the pressure column 5, that is, the pressure cap 6 and the pressure column 5 are integrated into a single unit. This integration of the pressure cap 6 and the pressure column 5 ensures that the pressure column and the pressure cap do not undergo relative displacement under high pressure.

[0036] Furthermore, the pressure cap 6 is connected to an external pressure device. For example, the pressure cap is cylindrical. When this type of pressure cap is connected to a hydraulic press, the pressure cap is not easily rotated, ensuring that the pressure column is subjected to uniform force.

[0037] Based on the above, it can be understood that when making test tablets using the cylindrical powder tableting mold, multiple second sub-pads are first bonded together to form a second pad, then the second pad is fitted onto the base and the first pad, then the cylindrical mold is fitted onto the second pad, then the weighed powder is introduced into the forming cavity (i.e., the second cavity) in the second pad, and finally the pressure column connected to the pressure cap is placed in the second cavity, and the external pressure applied to the pressure cap causes the pressure column 5 to press the powder material into shape, thus obtaining the test tablet.

[0038] Furthermore, after the test tablet is made, a demolding operation is required to remove it. During the demolding process, the pressure cap, pressure column, and cylindrical mold are removed separately, and then the second gasket is disassembled into multiple second sub-gaskets to complete the demolding and remove the test tablet.

[0039] According to this embodiment, the forming cavity (i.e., the second cavity) of the powder tablet mold is composed of multiple sub-gaskets, which facilitates disassembly. The demolding process is not affected by friction, making demolding easy and preventing sample breakage. Furthermore, the powder adhering to the inside of the second cavity is also easy to clean.

[0040] Those skilled in the art will understand that although the present invention has been shown and described with reference to specific exemplary embodiments, it should be understood that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. Therefore, the scope of the present invention should not be limited to the above embodiments, but should be defined not only by the appended claims but also by their equivalents.

[0041] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A powder tableting die, characterized by, include: Base (1); The first gasket (2) is connected to the base (1); Mold cylinder (3), the mold cylinder (3) is disposed on the base (1); The second gasket includes a plurality of second sub-gaskets (4), which are attached together to form the second gasket. The second gasket includes a second cavity (8), which is disposed in the first cavity (7) inside the mold cylinder (3). Pressure column (5), the pressure column (5) is disposed in the second cavity (8); Pressure cap (6), the pressure cap (6) is connected to the pressure column (5); The powder material is placed in the second cavity (8). When the pressure cap (6) is subjected to external pressure, the pressure column (5) presses the powder material into shape.

2. The powder tableting die according to claim 1, characterized in that The outer part of the mold cylinder (3) is cylindrical, and the first cavity (7) inside the mold cylinder (3) is conical.

3. The powder tableting die according to claim 1 or 2, characterized in that The second gasket is a cone, and the size of the second gasket is adapted to the size of the first cavity (7) so that the second gasket can be disposed in the first cavity (7).

4. The powder tableting die of claim 1, wherein The second gasket can be disassembled into multiple second sub-gaskets (4).

5. The powder tableting die of claim 1, wherein The second cavity (8) is a cylinder, and the cross-section of the second cavity (8) facing the pressure column (5) is circular and the radius of the circle can be adjusted as needed.

6. The powder tableting die according to claim 1 or 5, characterized in that The pressure column (5) is a cylinder. The cross section of the pressure column (5) facing the second cavity (8) is adapted to the cross section of the second cavity (8) facing the pressure column (5) so that the pressure column (5) can be placed in the second cavity (8) and move.

7. The powder tableting die of claim 6, wherein The length of the pressure column (5) along the moving direction of the second cavity (8) is adjustable and can satisfy the requirement that the powder material in the second cavity (8) be pressed into shape.

8. The powder tableting die of claim 1, wherein The pressure cap (6) is a cylinder, and the cross-sectional radius of the pressure cap (6) facing the pressure column (5) is greater than the cross-sectional radius of the pressure column (5) facing the second cavity (8); The pressure cap (6) is fixed to the pressure column (5); The pressure cap (6) is connected to an external pressure device.

9. The powder tableting die of claim 1, wherein, Both the base (1) and the first pad (2) are cylindrical. The cross-sectional radius of the base (1) facing the mold cylinder (3) is greater than the cross-sectional radius of the first gasket (2) facing the base (1).

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