Powder material forming die

Abstract

The utility model belongs to the field of dies, and particularly relates to a powder material forming die which comprises an outer die, a pressing head, a fixing piece and a limiting piece. A forming hole penetrating through the two ends is formed in the outer die, and the pressing head and the fixing piece are arranged on the forming hole in a sliding mode in the axial direction of the forming hole. A forming cavity is defined by the opposite sides of the pressing head and the fixing piece and the hole wall of the forming hole. One end of the limiting piece detachably abuts against one end of the outer mold, and the other end of the limiting piece and the outer end of the fixing piece are used for detachably abutting against the limiting platform. According to the powder material forming mold, the mold removal process is convenient and rapid, in the whole mold removal process, the position of a product can be kept still, the pressing head and the fixing piece cannot move, the problem of axial deviation of the pressing head and the fixing piece cannot occur, the mold removal effect can be guaranteed, and the possibility that the product is damaged in the mold removal process is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of molds, specifically relating to a powder material molding mold. Background Technology

[0002] The preparation of powder materials requires pressing and molding first, followed by hot pressing or pressureless sintering.

[0003] Taking the pressing of graphite powder into a target product as an example, the main production process includes the following steps: Raw material preparation: First, select high-quality graphite powder as the raw material; mix the graphite powder with other auxiliary materials (such as binders, lubricants, etc.) evenly. Pressing and molding: Place the mixed graphite powder into a mold, and apply high pressure through a press to form the powder within the mold. The pressing pressure, time, and temperature all affect the density and strength of the graphite sagger. Drying: The pressed graphite sagger needs to be dried to remove moisture and volatile substances. The drying process is usually carried out under controlled temperature and humidity conditions. Sintering: The dried graphite sagger is sintered at high temperature. The sintering process helps to improve the density and mechanical strength of the graphite sagger, while also improving its thermal conductivity.

[0004] There are still some problems with the current powder material molding molds that can be improved. For example, the demolding efficiency needs to be improved, and demolding often causes damage to the product. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a powder material compression molding die with simple structure, high molding and demolding efficiency, and demolding without damaging the product, for compression molding of graphite materials or other powder materials.

[0006] This utility model provides a powder material forming mold, including an outer mold, a pressure head, a fixing component, and a limiting component;

[0007] The outer mold has a forming hole that runs through both ends, and the pressure head and the fixing part are slidably mounted on the forming hole along the axial direction of the forming hole;

[0008] The pressure head and the fixing part on opposite sides, along with the wall of the forming hole, enclose to form a forming cavity;

[0009] One end of the limiting component is detachably abutted against one end of the outer mold, and the other end of the limiting component and the outer end of the fixing component are detachably abutted against the limiting platform.

[0010] Furthermore, the pressure head and the fixing components are arranged in the vertical direction;

[0011] The outer mold and limiting components are arranged in the vertical direction.

[0012] Furthermore, the limiting element includes at least two support pads arranged on the side of the fixing element.

[0013] Furthermore, the width of the support pad should be greater than half the width of the outer mold.

[0014] Furthermore, the support pad has a detachable connection structure on its side;

[0015] The limiting component also includes a disassembly component that is detachably connected to the disassembly component connection structure, which is used to disassemble the support pad.

[0016] Furthermore, the pressure head includes a pressure block and a cylinder connected in sequence;

[0017] The pressure block slides within the forming hole, the column is spaced from the forming hole wall, and the other end of the column extends out of the forming hole.

[0018] Furthermore, a protrusion is provided on the side of the pressure head or fixing component near the forming hole;

[0019] The forming cavity is formed by the pressure head and the fixing part on opposite sides, the hole wall of the forming hole and the outer wall of the protrusion.

[0020] Furthermore, the protrusion can be detachably mounted on the pressure head or the fixing component.

[0021] Furthermore, a heating cavity is provided on the inner wall of the outer mold around the outside of the forming hole;

[0022] The outer wall of the outer mold is provided with a heating liquid inlet and a heating liquid outlet that connect to the heating chamber.

[0023] Furthermore, both the pressure head and the fixing element can be connected to the heating element.

[0024] The beneficial effects of this utility model are as follows: During molding, the limiting and fixing components of the powder material molding die provided by this utility model are both limited by a limiting platform. The outer mold is limited by the limiting component, one end of the fixing component extends and slides within the molding hole, and the pressure head is slidably positioned at the other end of the molding hole. At this time, only pressure needs to be applied to the pressure head to move it towards the fixing component to complete molding. During demolding, the limiting component is first removed, and the outer mold is driven to move towards the limiting platform. At this time, the pressure head, product, and fixing component remain fixed until the product leaves the molding hole. Then, the pressure head can be removed to take the product away. The demolding process is convenient and quick. Throughout the demolding process, the product's position remains unchanged, and the pressure head and fixing component do not move, preventing axial offset of the pressure head and fixing component. This ensures a good demolding effect and reduces the possibility of product damage during demolding. Furthermore, the force application directions of the pressure head and outer mold are consistent, allowing the same force application device to be used for both, reducing the driving costs of molding and demolding. Attached Figure Description

[0025] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Appendix Figure 2 This is the front view of the present invention;

[0027] Appendix Figure 3 For the appendix Figure 2 Sectional view along line AA.

[0028] In the figure, 1-outer mold; 11-forming hole; 12-heating cavity; 13-heating liquid inlet; 14-heating liquid outlet; 2-pressure head; 21-pressure block; 22-column; 3-fixing component; 4-support pad; 41-threaded hole; 5-forming cavity; 6-protrusion. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal connection of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0034] As attached Figure 1 To be continued Figure 3 As shown, this utility model provides a powder material forming mold, including an outer mold 1, a pressure head 2, a fixing member 3, and a limiting member;

[0035] The outer mold 1 is provided with a forming hole 11 that passes through both ends. The pressure head 2 and the fixing part 3 are both slidably disposed on the forming hole 11 along the axial direction of the forming hole 11, that is, the pressure head 2 and the fixing part 3 can be relatively close or far apart.

[0036] The pressing head 2 and the fixing member 3 on opposite sides, along with the wall of the forming hole 11, form a forming cavity 5. The forming cavity 5 is used to hold the powder material to be formed. When the pressing head 2 and the fixing member 3 are close together, the opposite sides of the pressing head 2 and the fixing member 3 press the powder material to form a dense product. When the pressing head 2 and the fixing member 3 are far apart, the product can be demolded. During the actual forming process, the fixing member 3 remains stationary in the forming hole 11. Pressure is applied to the outer end of the pressing head 2 by an external force application device, causing the pressing head 2 to move toward the fixing member 3 for pressing and forming.

[0037] One end of the limiting member is detachably abutted against one end of the outer mold 1. The limiting member is used to support and limit the outer mold 1. Specifically, when the forming hole 11 is arranged vertically in the longitudinal direction, the limiting member is used to support the outer mold 1 and at the same time limit the outer mold 1 to continue to move downward relative to the limiting platform. When the forming hole 11 is arranged laterally or inclined, the limiting member is used to limit the outer mold 1 and limit the outer mold 1 to continue to move towards the limiting platform. The other end of the limiting member and the outer end of the fixing member 3 are detachably abutted against the limiting platform. The outer end of the fixing member 3 refers to the end of the fixing member 3 that is away from the forming hole 11 and the outer end of the fixing member 3 extends out of the forming hole 11. Preferably, the other end of the limiting member is flush with the outer end of the fixing member 3. When the forming hole 11 is arranged vertically in the longitudinal direction, both the fixing member 3 and the limiting member are directly mounted on the limiting platform. At this time, the limiting platform can be the ground or a horizontal working platform. When the forming hole 11 is arranged laterally or inclined, the limiting platform is a limiting platform used to limit the fixing member 3 and the limiting member.

[0038] The powder material molding die provided by this utility model features a limiting platform that limits both the limiting component and the fixing component 3 during molding. The outer mold 1 is limited by the limiting component, one end of the fixing component 3 extends into and slides within the molding hole 11, and the pressure head 2 is slidably positioned at the other end of the molding hole 11. At this time, only pressure needs to be applied to the pressure head 2 to move it towards the fixing component 3 to complete the molding process. During demolding, the limiting component is first removed, and the outer mold 1 is driven to move towards the limiting platform. At this time, the pressure head 2, the product, and the fixing component 3 remain fixed until the product is removed from the molding hole 11. Then, the pressure head 2 can be removed to take the product away. The demolding process is convenient and quick. Throughout the demolding process, the product's position remains unchanged, and the pressure head 2 and the fixing component 3 do not move, preventing axial displacement of the pressure head 2 and the fixing component 3. This ensures effective demolding and reduces the possibility of product damage during demolding. Furthermore, since the force application directions of the pressure head 2 and the outer mold 1 are consistent, the same force application device can be used to drive the pressure head 2 and the outer mold 1, reducing the driving cost of molding and demolding.

[0039] In one preferred embodiment, the pressure head 2 and the fixing member 3 are arranged in the vertical direction. In this case, the pressure head 2 is used as the upper mold and the fixing member 3 is used as the lower mold, and the axial direction of the forming hole 11 is arranged vertically.

[0040] Meanwhile, the outer mold 1 and the limiting component are arranged in the vertical direction. At this time, the limiting platform can be a ground-based or horizontally arranged work platform. The limiting component supports and limits the outer mold 1. When demolding, after the limiting component is removed, the outer mold 1 can fall onto the limiting platform in combination with its own gravity and the downward pressure applied by the force application device, simplifying the difficulty of moving the outer mold 1.

[0041] In one embodiment, the limiting member includes at least two support pads 4 arranged on the sides of the fixing member 3. Preferably, when two support pads 4 are provided, the two support pads 4 are symmetrically arranged on both sides of the fixing member 3 to ensure the stability of the limiting member's support and limiting. When three or more support pads 4 are provided, the three or more support pads 4 are arranged in a circular array on the outside of the fixing member 3 to ensure the uniformity of the limiting member's support and limiting. In this embodiment, the limiting member adopts the structure of support pads 4, which is simple and reliable, and also convenient for installation and disassembly.

[0042] In one embodiment, the width of the support pad 4 is greater than half the width of the outer mold 1, thereby ensuring the load-bearing and limiting effect of the support pad 4. Preferably, to improve stability, the width of the support pad 4 can be greater than or equal to the width of the outer mold 1.

[0043] In one embodiment, the support pad 4 is provided with a disassembly connection structure on its side;

[0044] The limiting component also includes a disassembly component that is detachably connected to the disassembly component connection structure. The disassembly component is used to disassemble the support pad 4. In this embodiment, by providing the disassembly component, the disassembly of the support pad 4 is facilitated. When disassembling the support pad 4, by operating the disassembly component, the support pad 4 can be pulled away from the outer mold 1 and the limiting platform in a plane parallel to the limiting platform, which facilitates disassembly. Preferably, the disassembly component connection structure is a threaded hole 41, and the disassembly component is a pull rod threadedly connected to the threaded hole 41.

[0045] In one embodiment, the pressure head 2 includes a pressure block 21 and a column 22 connected in sequence, wherein the outer dimensions of the pressure block 21 are larger than the outer dimensions of the column 22, the pressure block 21 is used as one of the cavity walls of the molding cavity 5, and the column 22 is used to connect to an external force application device.

[0046] The pressure block 21 is slidably fitted inside the forming hole 11. The column 22 is spaced from the wall of the forming hole 11, and the other end of the column 22 extends out of the forming hole 11. In this embodiment, by setting a gap between the column 22 and the wall of the forming hole 11, the inner outer diameter of the pressure head 2 is smaller than the outer outer diameter, so that most of the outer part of the pressure head 2 is not completely in contact with the forming hole 11. On the one hand, this can reduce the friction between the pressure head 2 and the forming hole 11, making pressing and demolding easier. On the other hand, it can prevent powder that accidentally enters between the pressure block 21 and the forming hole 11 from jamming the demolding action of the outer mold 1 during demolding, thereby improving the demolding success rate.

[0047] In one embodiment, a protrusion 6 is provided on the side of the pressure head 2 or the fixing member 3 near the forming hole 11;

[0048] The molding cavity 5 is formed by the opposing sides of the pressure head 2 and the fixing member 3, the hole wall of the molding hole 11, and the outer wall of the protrusion 6. In this embodiment, the protrusion 6 is provided to form a bowl-shaped product. Specifically, the protrusion 6 is used to form the cavity of the bowl-shaped product. The opposing sides of the pressure head 2 and the fixing member 3 are used to form the bottom wall and the opening side of the bowl-shaped product, and the hole wall of the molding hole 11 is used to form the side wall of the bowl-shaped product.

[0049] The cross-sectional shape of the forming hole 11 can be circular, rectangular or other irregular structure, which can be determined according to the side wall shape of the bowl-shaped product. If the pressure head 2 or the fixing part 3 is not provided with the protrusion 6, it can be provided with a plane, conical surface or other structure according to the bottom wall of the bowl-shaped product.

[0050] In one embodiment, the protrusion 6 is detachably mounted on the pressure head 2 or the fixing member 3. This arrangement facilitates the replacement of protrusions 6 of different sizes, thereby enabling the pressing of bowl-shaped products of different sizes.

[0051] In one embodiment, a heating cavity 12 is provided on the inner wall of the outer mold 1 around the outside of the forming hole 11;

[0052] The outer wall of the outer mold 1 is provided with a heating liquid inlet 13 and a heating liquid outlet 14 that communicate with the heating chamber 12. Preferably, the heating liquid is a heat-conducting oil at 100℃-200℃. By providing the heating chamber 12, powder materials can be heated and pressed into shape, achieving simultaneous heating and pressing.

[0053] In one embodiment, both the pressure head 2 and the fixing member 3 can be connected to a heating element, such as an electric heating device, so that the pressure head 2 and the fixing member 3 are also in a high-temperature state, thereby improving the heating effect on the powder dismantling.

[0054] Reference Appendix Figure 1 -Appendix Figure 3 The specific workflow of this utility model, as provided in the embodiments, is as follows:

[0055] Mold assembly steps: Place the fixing component 3 between the two support pads 4, with both the fixing component 3 and the support pads 4 placed on a horizontally arranged limiting platform. Place the bottom side of the outer mold 1 onto the upper surface of the two support pads 4, so that the top of the fixing component 3 is engaged in the forming hole 11 of the outer mold 1. Place a certain amount of powder material on the upper surface of the fixing component 3. Finally, engage the bottom side of the pressing head 2 into the forming hole 11 of the outer mold 1 and press the powder material firmly. Apply a vertical downward pressure of 50t-100t to the top of the pressing head 2 using a force application device to press the powder material into a dense product.

[0056] Demolding steps: First, screw the two matching pull rods into the two threaded holes 41 respectively. Pull the pull rods and move the support pads 4 to both sides. Then, use the force application device to apply pressure vertically downward to the top side of the outer mold 1, so that the outer mold 1 moves vertically downward relative to the pressure head 2 until the product is exposed. Then remove the pressure head 2 and then remove the product.

[0057] The above description is merely an embodiment and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations, modifications, or alterations to the technical solution of this utility model without departing from its scope. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model, without departing from its scope, should fall within the protection scope of this utility model.

Claims

1. A powder material molding die, characterized in that, It includes an outer mold (1), a pressure head (2), a fixing part (3), and a limiting part; The outer mold (1) is provided with a forming hole (11) that passes through both ends. The pressure head (2) and the fixing member (3) are both slidably disposed on the forming hole (11) along the axial direction of the forming hole (11). The pressure head (2) and the fixing member (3) on opposite sides and the hole wall of the forming hole (11) enclose to form a forming cavity (5). One end of the limiting member is detachably abutted against one end of the outer mold (1), and the other end of the limiting member and the outer end of the fixing member (3) are detachably abutted against the limiting platform.

2. The powder material molding die as described in claim 1, characterized in that, The pressure head (2) and the fixing member (3) are arranged in the vertical direction; The outer mold (1) and the limiting member are arranged in the vertical direction.

3. The powder material molding die as described in claim 1, characterized in that, The limiting member includes at least two support pads (4) arranged on the side of the fixing member (3).

4. The powder material molding die as described in claim 3, characterized in that, The width of the support pad (4) is greater than half the width of the outer mold (1).

5. The powder material molding die as described in claim 3, characterized in that, The support pad (4) is provided with a disassembly connection structure on its side; The limiting component also includes a disassembly component that is detachably connected to the disassembly component connection structure, the disassembly component being used to disassemble the support pad (4).

6. The powder material molding die as described in claim 1, characterized in that, The pressure head (2) includes a pressure block (21) and a column (22) connected in sequence; The pressure block (21) is slidably fitted in the forming hole (11), the column (22) is spaced from the wall of the forming hole (11), and the other end of the column (22) extends out of the forming hole (11).

7. The powder material molding die as described in any one of claims 1-6, characterized in that, The pressure head (2) or the fixing member (3) is provided with a protrusion (6) on the side near the forming hole (11). The forming cavity (5) is formed by the opposite side of the pressure head (2) and the fixing member (3), the hole wall of the forming hole (11) and the outer wall of the protrusion (6).

8. The powder material molding die as described in claim 7, characterized in that, The protrusion (6) is detachably mounted on the pressure head (2) or the fixing member (3).

9. The powder material molding die as described in any one of claims 1-6 and 8, characterized in that, A heating cavity (12) is provided on the inner wall of the outer mold (1) around the outside of the forming hole (11). The outer wall of the outer mold (1) is provided with a heating liquid inlet (13) and a heating liquid outlet (14) that connect to the heating chamber (12).

10. The powder material molding die as described in claim 9, characterized in that, Both the pressure head (2) and the fixing member (3) can be connected to the heating element.

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