A powder compression tool for forming a taper with anti-sticking

Abstract

The utility model discloses a kind of powder pressing tools of anti-adhesion taper forming, including core rod, die sleeve, upper press head, lower press head and gasket;Core rod is circular table shape structure, its top end outer diameter is big, bottom end outer diameter is small;Die sleeve is cylindrical structure, die sleeve concentrically sets in core rod outer, form a taper space with small top clearance, big bottom clearance between die sleeve and core rod;Upper press head is cylindrical structure, located at the top clearance of taper space;Lower press head is cylindrical structure, located at the bottom clearance of taper space;Lower end of lower press head is fixed with base, the diameter of base is greater than lower press head, gasket is equipped between base and die sleeve lower end;Gasket is circular ring structure by two or two with one gasket segment spliced together.The utility model can improve the stability when product demoulding, and then guarantee product quality, prevent the situation that the product pressed appears drop meat, fracture, the tool structure is simple, convenient to operate, and can improve product yield.

Description

Technical Field

[0001] This utility model relates to the field of powder pressing technology, specifically to a powder pressing tool for anti-sticking conical surface forming. Background Technology

[0002] Powder compression molding is a forming method that utilizes external pressure in a mold. Its molding process includes powder loading, pressing, and demolding. The traditional demolding method in powder compression molding involves the lower mold pushing upwards under the action of a guiding mechanism, thus ejecting the formed product from the mold cavity. However, this demolding method in powder compression molding has the following problems: First, during the pressing process, powder easily adheres to the inner wall of the mold cavity. Once external force pushes the product out of the mold cavity, surface damage is very likely to occur, resulting in a low product qualification rate.

[0003] Secondly, considering the need to ensure a high pass rate, the inner wall of the mold cavity must be treated after each mold opening. This results in very low demolding efficiency and significantly reduces production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a powder pressing tool for anti-adhesion conical surface forming, which at least to some extent solves one of the technical problems in related technologies.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A powder pressing tool for anti-adhesion conical surface forming includes a core rod, a die sleeve, an upper pressing head, a lower pressing head, and a gasket; The core rod has a frustum-shaped structure with a large outer diameter at the top and a small outer diameter at the bottom; the mold sleeve has a cylindrical structure and is concentrically fitted around the core rod, forming a conical space with a small gap at the top and a large gap at the bottom between the mold sleeve and the core rod. The upper pressure head is a cylindrical structure located at the top gap of the conical space, and is also fitted onto the top of the core rod; the lower pressure head is a cylindrical structure located at the bottom gap of the conical space, and is also fitted onto the bottom of the core rod. The lower end of the pressing head is fixed with a base. The diameter of the base is larger than that of the pressing head. A gasket is provided between the base and the lower end of the mold sleeve. The gasket is also sleeved on the outside of the pressing head. The gasket is a ring structure composed of two or more gasket segments.

[0006] Based on the above, the splicing surface of two adjacent pad segments is an inclined plane.

[0007] Based on the above, the gasket consists of two gasket segments, namely a left gasket segment and a right gasket segment; the left gasket segment and the right gasket segment have a semi-circular ring structure.

[0008] Based on the above, the inner diameter of the upper pressure head is consistent with the outer diameter of the top end of the core rod, and the outer diameter of the upper pressure head is consistent with the inner diameter of the mold sleeve.

[0009] Based on the above, the inner diameter of the pressing head is consistent with the outer diameter of the bottom end of the core rod, and the outer diameter of the pressing head is consistent with the inner diameter of the mold sleeve.

[0010] Based on the above, the inner diameter of the gasket is consistent with the outer diameter of the pressure head, and the outer diameter of the gasket is consistent with the outer diameter of the mold sleeve.

[0011] Based on the above, the base is disc-shaped, and the outer diameter of the base is the same as the outer diameter of the gasket.

[0012] The beneficial effects of this utility model are: 1. This utility model can form a conical space with a large top gap and a small bottom gap. When demolding, the tool is in an inverted state, that is, the small end of the core rod is on top and the large end is on the bottom, which makes demolding very easy and simple.

[0013] 2. This utility model is composed of multiple components assembled together, rather than as a whole. There are small gaps between the components, which generate slight vibrations during demolding, allowing the product to be easily demolded without causing material sticking due to the large conical area.

[0014] 3. The gasket in this utility model adopts a modular design, which makes the tolerance matching more reasonable, easier to produce and assemble, distributes the force during pressing, and is easy to disassemble.

[0015] 4. This utility model can improve the stability of the product during demolding, thereby ensuring product quality and preventing the pressed product from falling off or breaking. The tool has a simple structure, is easy to operate, and can improve the product yield. Attached Figure Description

[0016] Figure 1 This is an assembly diagram of the present invention; Figure 2 This is a schematic diagram showing the disassembled parts of this utility model.

[0017] In the diagram: 1-core rod, 2-upper pressure head, 3-mold sleeve, 4-right pad segment, 5-lower pressure head, 6-left pad segment, 7-base.

[0018] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the present invention. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] like Figures 1 to 2 As shown, this embodiment provides a powder pressing tool for anti-adhesion conical surface forming, including a core rod 1, a mold sleeve 3, an upper pressing head 2, a lower pressing head 5, a gasket, and a base 7.

[0021] The core rod 1 has a frustum-shaped structure, with its top outer diameter being slightly larger than its bottom outer diameter. In this embodiment, the inner and outer diameters of the top of the core rod 1 are 1 mm larger than the inner and outer diameters of the bottom of the core rod 1.

[0022] The mold sleeve 3 is a cylindrical structure. The mold sleeve 3 is concentrically fitted outside the core rod 1, forming a conical space with a small top gap and a large bottom gap between the mold sleeve 3 and the core rod 1.

[0023] The upper pressure head 2 has a cylindrical structure. The inner diameter of the upper pressure head 2 is the same as the outer diameter of the top end of the core rod 1, and the outer diameter is the same as the inner diameter of the mold sleeve 3. When assembled, the upper pressure head 2 is located at the top gap of the conical space, and the upper pressure head 2 is simultaneously sleeved on the top end of the core rod 1.

[0024] The pressing head 5 is a cylindrical structure. The inner diameter of the pressing head 5 is the same as the outer diameter of the bottom end of the core rod 1, and the outer diameter is the same as the inner diameter of the mold sleeve 3. When assembled, the pressing head 5 is located at the bottom gap of the conical space, and the pressing head 5 is simultaneously sleeved on the bottom end of the core rod 1.

[0025] The lower end of the pressing head 5 is fixed with a base 7. The base 7 is disc-shaped, and its outer diameter is larger than that of the pressing head 5 and is consistent with the outer diameter of the gasket.

[0026] A gasket is provided between the base 7 and the lower end of the mold sleeve 3. The gasket is composed of a left gasket segment 6 and a right gasket segment 4. The left gasket segment 6 and the right gasket segment 4 are semi-circular ring structures. The two are assembled around the lower pressure head 5 to form a circular ring structure, and the splicing surface of the left gasket segment 6 and the right gasket segment 4 is a bevel.

[0027] After assembly, the inner diameter of the gasket is consistent with the outer diameter of the lower pressure head 5, the outer diameter of the gasket is consistent with the outer diameter of the mold sleeve 3, and the two end faces of the gasket are respectively attached to the lower end of the mold sleeve 3 and the upper end of the base 7.

[0028] The combined design of the gaskets has the following advantages: First, it allows for more reasonable tolerance matching, making production and assembly easier. Second, it distributes stress during pressing. Third, it facilitates disassembly.

[0029] The working process of this utility model is as follows: During loading, remove the upper pressure head 2 and then fill the conical space with the filler. After loading is complete, shake the container manually and then reinstall the upper pressure head 2.

[0030] Then, the tool containing the material is placed under the hydraulic press for pressing. The upper press head 2 presses the powder in the conical space downwards to form the shape. After that, the tool is flipped up and down (the lower press head 5 is at the top and the upper press head 2 is at the base), the left pad segment 6 and the right pad segment 4 are removed, and the hydraulic press moves to drive the lower press head 5 downwards to press the powder in the conical space again to form the shape.

[0031] After pressing, the mold sleeve 3 is demolded. At this time, the small end of the core rod 1 is on top and the large end is on the bottom. Since the tool is assembled from a set and is not a whole, there are small gaps between the components. When demolding, a slight vibration is generated, so that the product can easily detach from the core rod 1 when demolding, and there will be no sticking of material due to the large conical area.

[0032] This tool can improve the stability of the product during demolding during the pressing process, thereby ensuring product quality and preventing the pressed product from losing material or breaking. The tool has a simple structure, is easy to operate, and can improve the product yield.

[0033] The above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the utility model without departing from the spirit and scope of the utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

[0034] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A powder pressing tool for anti-adhesion conical surface forming, characterized in that: Includes core rod, die sleeve, upper pressure head, lower pressure head, and gasket; The core rod has a frustum-shaped structure with a large outer diameter at the top and a small outer diameter at the bottom; the mold sleeve has a cylindrical structure and is concentrically fitted around the core rod, forming a conical space with a small gap at the top and a large gap at the bottom between the mold sleeve and the core rod. The upper pressure head is a cylindrical structure located at the top gap of the conical space, and is also fitted onto the top of the core rod; the lower pressure head is a cylindrical structure located at the bottom gap of the conical space, and is also fitted onto the bottom of the core rod. The lower end of the pressing head is fixed with a base. The diameter of the base is larger than that of the pressing head. A gasket is provided between the base and the lower end of the mold sleeve. The gasket is also sleeved on the outside of the pressing head. The gasket is a ring structure composed of two or more gasket segments.

2. The powder pressing tool for anti-adhesion conical surface forming according to claim 1, characterized in that: The joint surface between two adjacent pad segments is an inclined plane.

3. The powder pressing tool for anti-adhesion conical surface forming according to claim 2, characterized in that: The gasket consists of two segments, a left segment and a right segment; the left segment and the right segment are semi-circular ring structures.

4. The powder pressing tool for anti-adhesion conical surface forming according to any one of claims 1-3, characterized in that: The inner diameter of the upper pressure head is the same as the outer diameter of the top of the core rod, and the outer diameter of the upper pressure head is the same as the inner diameter of the mold sleeve.

5. The powder pressing tool for anti-adhesion conical surface forming according to claim 4, characterized in that: The inner diameter of the pressing head is the same as the outer diameter of the bottom end of the core rod, and the outer diameter of the pressing head is the same as the inner diameter of the mold sleeve.

6. The powder pressing tool for anti-adhesion conical surface forming according to claim 5, characterized in that: The inner diameter of the gasket is the same as the outer diameter of the pressure head, and the outer diameter of the gasket is the same as the outer diameter of the mold sleeve.

7. The powder pressing tool for anti-adhesion conical surface forming according to claim 6, characterized in that: The base is disc-shaped, and the outer diameter of the base is the same as the outer diameter of the gasket.

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