Cold isostatic pressing die for manufacturing ceramic target

Abstract

The utility model discloses a kind of cold isostatic pressing mould for manufacturing ceramic target material, including metal inner mould body and rubber sealing sleeve, rubber sealing sleeve annular side is provided with tightening protection assembly, by two groups of lower metal protective shell combination installation in rubber sealing sleeve annular side downside, gradually tightening lower end of rubber sealing sleeve can be carried out by lower tightening press strip, and rubber sealing sleeve can be tightened to lower sealing cover, so that lower sealing cover and rubber sealing sleeve and metal inner mould body between better sealing, by two groups of upper metal protective shell combination installation in rubber sealing sleeve annular side upside, gradually tightening upper end of rubber sealing sleeve can be carried out by upper tightening press strip, and rubber sealing sleeve can be tightened to upper sealing cover, so that upper sealing cover and rubber sealing sleeve and metal inner mould body between better sealing, avoid ceramic raw material powder in filler cavity appear to outwardly overflow in subsequent cold isostatic pressing process.

Description

Technical Field

[0001] This utility model relates to the field of ceramic target manufacturing technology, specifically a cold isostatic pressing mold for manufacturing ceramic targets. Background Technology

[0002] In the process of manufacturing ceramic targets, cold isostatic pressing molds play a key role. Cold isostatic pressing molds uniformly transmit high pressure in a closed container through a liquid medium (such as water or oil), causing the ceramic powder to undergo plastic deformation at room temperature or slightly higher temperature, forming green parts with initial strength.

[0003] In the prior art, a cold isostatic pressing mold for manufacturing ceramic targets, with the publication number "CN212331366U", can effectively control the outer diameter of the ceramic target blank by limiting it with a metal inner mold and an outer mold, so that the outer diameter size is relatively uniform and does not deviate significantly from the design size.

[0004] However, the above technical solutions and existing technologies have the following drawbacks: Firstly, the sealing sleeve in this cold isostatic pressing mold is tightened and fixed at both ends using steel wire fixing components. However, steel wire fixing components are prone to loosening during actual use, thus failing to securely tighten and fix the sealing sleeve at both ends. Furthermore, steel wire fixing components are cumbersome to assemble and disassemble, resulting in low ease of use. Secondly, this cold isostatic pressing mold relies solely on support legs for support, and this support structure cannot adequately support the metal inner mold. Therefore, during the filling process in the filling cavity, the metal inner mold is prone to shaking, thereby affecting the stability of the filling. Utility Model Content

[0005] The purpose of this invention is to provide a cold isostatic pressing mold for manufacturing ceramic targets, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A cold isostatic pressing mold for manufacturing ceramic targets includes a metal inner mold body, an upper sealing cover, a rubber sealing sleeve, an internal sealing gasket, and a lower sealing cover. The lower sealing cover is fitted onto the lower side of the annular side of the metal inner mold body, and the upper sealing cover is fitted onto the upper side of the annular side of the metal inner mold body. An internal sealing gasket is fitted onto the lower end face of the upper sealing cover. Rubber sealing sleeves are fitted onto the annular sides of both the upper and lower sealing covers. A tightening and protection component is provided on the annular side of the rubber sealing sleeve, which is used to tighten and protect the rubber sealing sleeve. A support component is provided at the bottom of the metal inner mold body, which is used to improve the stability of the metal inner mold body when placed vertically.

[0007] Preferably, the tightening protection assembly includes a lower metal protective shell, a lower tightening strip, an inlet through hole, an upper metal protective shell, an upper tightening strip, and an annular limiting groove. Two sets of upper metal protective shells are assembled on the upper side of the annular side of the rubber sealing sleeve, and two sets of upper tightening strips are provided on the upper side of the inner wall of the upper metal protective shell. Two sets of lower metal protective shells are assembled on the lower side of the annular side of the rubber sealing sleeve, and two sets of lower tightening strips are provided on the lower side of the inner wall of the lower metal protective shell. Annular limiting grooves are provided on both the upper and lower sides of the annular side of the rubber sealing sleeve, and the annular limiting grooves are respectively matched with the upper tightening strip and the lower tightening strip. Multiple inlet through holes are provided inside both the lower metal protective shell and the upper metal protective shell.

[0008] Preferably, an upper extension piece is fixedly connected to the side of the upper metal protective shell, and a lower extension piece is fixedly connected to the side of the lower metal protective shell. A connecting screw is inserted inside both the upper and lower extension pieces. An anti-loosening washer is fitted on the annular side of the connecting screw, and a fixing nut is threaded onto the annular side of the connecting screw.

[0009] Preferably, the support assembly includes a support base, a support chassis, an anti-slip pad, a connecting threaded head, and a connecting internal threaded hole. The connecting internal threaded hole is provided at the middle position of the bottom of the metal inner mold body. The connecting internal threaded hole is threaded with a connecting threaded head. The lower end of the connecting threaded head is connected to the support base. The lower end of the support base is provided with the support chassis. The lower end surface of the support chassis is adhered with an anti-slip pad.

[0010] Preferably, the lower end face of the upper metal protective shell is provided with an assembly clip, and the upper end face of the lower metal protective shell is provided with an assembly slot, and the assembly slot matches the assembly clip.

[0011] Preferably, the upper sealing cap and the lower sealing cap have the same outer diameter, the upper sealing cap and the lower sealing cap have the same thickness, and the inner diameter of the rubber sealing sleeve is the same as the outer diameter of the upper sealing cap and the lower sealing cap.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. By combining two sets of lower metal protective shells and installing them on the lower side of the annular side of the rubber sealing sleeve, the lower tightening strip can gradually tighten the lower end of the rubber sealing sleeve, and the rubber sealing sleeve will tighten the lower sealing cover, thereby improving the sealing performance between the lower sealing cover, the rubber sealing sleeve, and the metal inner mold body. By combining two sets of upper metal protective shells and installing them on the upper side of the annular side of the rubber sealing sleeve, the upper tightening strip can gradually tighten the upper end of the rubber sealing sleeve, and the rubber sealing sleeve will tighten the upper sealing cover, thereby improving the sealing performance between the upper sealing cover, the rubber sealing sleeve, and the metal inner mold body. This prevents the ceramic raw material powder in the filling cavity from overflowing during the subsequent cold isostatic pressing process. Compared with the existing technology that uses steel wire for fixing, this method offers better tightening stability. 2. By fixing the upper extension piece and the lower extension piece together, it is convenient for users to assemble and disassemble the upper metal protective shell and the lower metal protective shell using fixing nuts and connecting screws, making it easy to use; 3. By rotating the connecting threaded head into the connecting internal threaded hole, the support base and support chassis can be installed at the bottom of the metal inner mold body to provide stable support, preventing the vertically placed metal inner mold body from easily shaking during the filling of ceramic raw material powder, thereby ensuring the stability of subsequent filling. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a front cross-sectional view of the tightening protection component and the support component in this utility model; Figure 3 This is a schematic diagram of the explosion state of the tightening protection component and the support component in this utility model; Figure 4 This is a schematic diagram showing the explosion state of the upper and lower metal protective shells in this utility model. Figure 5 This is a structural diagram of the rubber sealing sleeve in this utility model.

[0014] In the diagram: 1. Metal inner mold body; 2. Upper sealing cover; 3. Rubber sealing sleeve; 4. Tightening protection assembly; 41. Lower metal protective shell; 42. Lower extension piece; 43. Lower tightening strip; 44. Inlet through hole; 45. Assembly clip; 46. Upper metal protective shell; 47. Upper extension piece; 48. Upper tightening strip; 49. Assembly slot; 411. Connecting screw; 412. Anti-loosening washer; 413. Fixing nut; 414. Annular limiting groove; 5. Support assembly; 51. Support base; 52. Support chassis; 53. Anti-slip pad; 54. Connecting threaded head; 55. Connecting internal threaded hole; 6. Internal sealing gasket; 7. Lower sealing cover. Detailed Implementation

[0015] 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.

[0016] Please see Figures 1-5 This utility model provides a technical solution: Example 1: A cold isostatic pressing mold for manufacturing ceramic targets includes a metal inner mold body 1, an upper sealing cover 2, a rubber sealing sleeve 3, an internal sealing gasket 6, and a lower sealing cover 7. The lower sealing cover 7 is fitted onto the lower side of the annular side of the metal inner mold body 1, and the inner diameter of the lower sealing cover 7 is the same as the outer diameter of the lower end of the metal inner mold body 1. An upper sealing cover 2 is fitted onto the upper side of the annular side of the metal inner mold body 1, and the inner diameter of the upper sealing cover 2 is the same as the outer diameter of the upper end of the metal inner mold body 1. The outer diameters of the upper sealing cover 2 and the lower sealing cover 7 are the same, and their thicknesses are the same. Both the upper sealing cover 2 and the lower sealing cover 7 are made of high-tear-resistant silicone rubber. The upper sealing cover 2, made of high-tear-resistant silicone rubber, has better strength and elasticity, which is beneficial for the filling cavity (…). Figure 2 The upper end of the filling cavity is sealed by the upper sealing cap 2, which is made of high tear-resistant silicone rubber. The lower end of the upper sealing cap 2 is fitted with an inner sealing gasket 6. The inner diameter of the inner sealing gasket 6 is the same as that of the upper sealing cap 2, and the outer diameter of the inner sealing gasket 6 is the same as that of the upper sealing cap 2. The inner sealing gasket 6 is made of nitrile rubber, which can further improve the sealing performance of the upper sealing cap 2.

[0017] Both the upper sealing cover 2 and the lower sealing cover 7 are fitted with rubber sealing sleeves 3 on their annular sides. The inner diameter of the rubber sealing sleeve 3 is the same as the outer diameter of the upper sealing cover 2 and the lower sealing cover 7. The material of the rubber sealing sleeve 3 is the same as that of the upper sealing cover 2. A filling cavity is formed between the rubber sealing sleeve 3 and the metal inner mold body 1, so that the workers can fill an appropriate amount of ceramic raw material powder into the filling cavity. This allows the workers to place the mold in an external isostatic press for pressure treatment, so that the ceramic raw material powder in the filling cavity can form a green body with initial strength. The ceramic raw material powder is zinc alumina. Since the detailed steps and working principle of preparing the target blank with the help of cold isostatic pressing mold have been described in detail in the background art comparative document, they will not be repeated here.

[0018] The rubber sealing sleeve 3 has a tightening and protection component 4 on its annular side. The tightening and protection component 4 is used to tighten and protect the rubber sealing sleeve 3, and can firmly fix the upper sealing cover 2, the lower sealing cover 7 and the rubber sealing sleeve 3 on the metal inner mold body 1 for use. The bottom of the metal inner mold body 1 is provided with a support component 5, which is used to improve the stability of the metal inner mold body 1 when placed vertically, and to prevent the metal inner mold body 1 from easily shaking during the filling of ceramic raw material powder.

[0019] The tightening protection assembly 4 includes a lower metal protective shell 41, a lower tightening strip 43, an inlet through hole 44, an upper metal protective shell 46, an upper tightening strip 48, and an annular limiting groove 414. Two sets of upper metal protective shells 46 are assembled on the upper annular side of the rubber sealing sleeve 3. Two sets of upper tightening strips 48 are provided on the upper inner wall of the upper metal protective shell 46. The upper tightening strips 48 and the upper metal protective shell 46 are an integral structure. After assembly, the two sets of upper metal protective shells 46 with two sets of upper tightening strips 48 on the upper inner wall can effectively protect the rubber... The upper side of the annular side of the sealing sleeve 3 is tightened. Two sets of lower metal protective shells 41 are assembled on the lower side of the annular side of the rubber sealing sleeve 3. The upper metal protective shell 46 and the lower metal protective shell 41 are made of the same material as the metal inner mold body 1. Two sets of lower tightening strips 43 are provided on the lower inner wall of the lower metal protective shell 41. The lower tightening strips 43 and the lower metal protective shell 41 are an integral structure. The two sets of lower metal protective shells 41 with two sets of lower tightening strips 43 on the lower inner wall can tighten the lower side of the annular side of the rubber sealing sleeve 3 after being assembled.

[0020] The rubber sealing sleeve 3 has annular limiting grooves 414 on both the upper and lower sides of its annular side. The annular limiting grooves 414 are matched with the upper tightening strip 48 and the lower tightening strip 43, respectively. There are four sets of annular limiting grooves 414, and the four sets of annular limiting grooves 414 are of the same specification. The four sets of annular limiting grooves 414 can limit the two sets of upper tightening strips 48 and lower tightening strips 43 on the upper and lower sides, so as to prevent the upper tightening strips 48 and lower tightening strips 43 from being misaligned during the tightening of the rubber sealing sleeve 3. The lower metal protective shell 41 and the upper metal protective shell 46 are both provided with multiple inlet through holes 44. The multiple inlet through holes 44 facilitate the entry of hydraulic fluid from the external isostatic press into the gap between the upper metal protective shell 46 and the lower metal protective shell 41 and the rubber sealing sleeve 3, so as to make the ceramic raw material powder inside the rubber sealing sleeve 3 uniformly pressurized.

[0021] An upper extension piece 47 is fixedly connected to the side of the upper metal protective shell 46. The upper extension piece 47 and the upper metal protective shell 46 are an integral structure. The upper extension piece 47 facilitates the connection of the connecting screw 411 and the fixing nut 413 to combine and fix the two sets of upper metal protective shells 46. A lower extension piece 42 is fixedly connected to the side of the lower metal protective shell 41. The lower extension piece 42 and the lower metal protective shell 41 are an integral structure. The lower extension piece 42 facilitates the connection of the connecting screw 411 and the fixing nut 413 to combine and fix the two sets of lower metal protective shells 41. Connecting screws 411 are inserted inside both the upper extension piece 47 and the lower extension piece 42. Anti-loosening washers 412 are fitted on the annular side of the connecting screw 411. A fixing nut 413 is installed on the annular side thread 411. The connecting screw 411 is a high-strength bolt. The connecting screw 411 and the fixing nut 413 facilitate the user's disassembly and assembly of the upper metal protective shell 46 and the lower metal protective shell 41. The anti-loosening washer 412 improves the anti-loosening ability of the fixing nut 413. The lower end face of the upper metal protective shell 46 is provided with an assembly clip 45. The assembly clip 45 and the upper metal protective shell 46 are an integral structure. The upper end face of the lower metal protective shell 41 is provided with an assembly slot 49, and the assembly slot 49 matches the assembly clip 45. The matching assembly slot 49 and the assembly clip 45 prevent misalignment or displacement of the upper metal protective shell 46 and the lower metal protective shell 41 after assembly.

[0022] Example 2: Based on Embodiment 1, in this embodiment, by rotating the connecting threaded head 54 into the connecting internal threaded hole 55, the support base 51 and the support chassis 52 can be installed at the bottom of the metal inner mold body 1 to provide stable support, thus preventing the vertically placed metal inner mold body 1 from easily shaking during the filling of ceramic raw material powder.

[0023] Support assembly 5 includes a support base 51, a support chassis 52, an anti-slip pad 53, a connecting threaded head 54, and a connecting internal threaded hole 55. A connecting internal threaded hole 55 is provided at the center of the bottom of the metal inner mold body 1. The connecting internal threaded hole 55 is threaded with the connecting threaded head 54. The threaded connection of the connecting internal threaded hole 55 and the connecting threaded head 54 facilitates the disassembly and assembly of the support base 51 by the user. The lower end of the connecting threaded head 54 is connected to the support base 51. The support base 51, the connecting threaded head 54, and the support chassis 52 are all connected by welding. The support base 51 is equipped with a support plate 52 at its lower end. The support plate 52 increases the support area of ​​the support base 51, thereby improving the support stability of the support base 51. An anti-slip pad 53 is bonded to the lower end surface of the support plate 52, which makes the lower end surface of the support plate 52 more slip-resistant. The annular side of the support base 51 is provided with anti-slip texture, which makes the annular side of the support base 51 more slip-resistant and prevents the user from easily slipping when holding and disassembling the support base 51.

[0024] Working principle: The user first places the lower sealing cover 7 on the lower side of the annular side of the metal inner mold body 1 from bottom to top, and then places the rubber sealing sleeve 3 on the annular side of the lower sealing cover 7 from bottom to top, making the bottom of the rubber sealing sleeve 3 flush with the bottom of the lower sealing cover 7. Next, the two sets of lower metal protective shells 41 are snapped into the designated positions on the lower side of the annular side of the rubber sealing sleeve 3. During this process, the lower tightening strip 43 needs to be snapped into the lower annular limiting groove 414. Then, with the help of an external wrench, the connecting screw 411 and the fixing nut 413 are connected and fixed to the lower extension piece 42, thereby installing and fixing the two sets of lower metal protective shells 41 on the lower side of the annular side of the rubber sealing sleeve 3. During this process, the two sets of lower metal protective shells 41 will gradually tighten the lower end of the rubber sealing sleeve 3 through the lower tightening strip 43, and the rubber sealing sleeve 3 will tighten the lower sealing cover 7, thereby improving the sealing performance between the lower sealing cover 7, the rubber sealing sleeve 3 and the metal inner mold body 1. After the lower metal protective shell 41 is installed, the user can fill the required amount of ceramic raw material powder into the filling cavity through the upper end of the rubber sealing sleeve 3. After filling, the inner sealing gasket 6 and the upper sealing cover 2 are then sequentially fitted onto the upper side of the annular side of the metal inner mold body 1. During this process, the lower end of the inner sealing gasket 6 will fit against the ceramic raw material powder at the upper end of the filling cavity, and both the inner sealing gasket 6 and the upper sealing cover 2 will be inside the rubber sealing sleeve 3. Then, the two sets of upper metal protective shells 46 are snapped into the designated positions on the upper side of the annular side of the rubber sealing sleeve 3. During this process, the upper tightening strip 48 needs to be snapped into the upper annular limiting groove 414. It is also necessary to insert the assembly clip 45 into the assembly slot 49, and then use an external wrench to connect and fix the connecting screw 411 and the fixing nut 413 to the upper extension piece 47, so as to install and fix the two sets of upper metal protective shells 46 on the upper side of the annular side of the rubber sealing sleeve 3. During this process, the two sets of upper metal protective shells 46 will gradually tighten the upper end of the rubber sealing sleeve 3 through the upper tightening strip 48, and the rubber sealing sleeve 3 will tighten the upper sealing cover 2, so as to improve the sealing between the upper sealing cover 2, the rubber sealing sleeve 3 and the metal inner mold body 1, and prevent the ceramic raw material powder in the filling cavity from overflowing during the cold isostatic pressing process. When it is necessary to remove the ceramic raw material powder used to make the preform from the filling chamber, the user first uses an external wrench to disassemble the fixing nut 413 and connecting screw 411 in the upper extension plate 47 and the lower extension plate 42 respectively. At this time, the two sets of upper metal protective shells 46 and lower metal protective shells 41 can be disassembled separately. Then, the rubber sealing sleeve 3 can be pulled upwards to remove it. After the rubber sealing sleeve 3 is removed, the upper sealing cover 2 and the inner sealing gasket 6 can be moved upwards to remove them (see reference). Figure 3 At this point, the ceramic raw material powder used to make the blank can be removed from the annular side of the metal inner mold 1; Before filling the filling cavity with ceramic raw material powder, the user rotates the connecting threaded head 54 into the connecting internal threaded hole 55, thereby installing the support base 51 and the support base 52 at the bottom of the metal inner mold body 1 for use. Then, the metal inner mold body 1 is placed vertically on the worktable for filling. During this process, the support base 52 and the support base 51 will provide stable support for the metal inner mold body 1, preventing the metal inner mold body 1 from easily shaking when the user fills the filling cavity. After the material is filled, the support base 51 and the support base 52 are disassembled to prevent the support base 51 and the support base 52 from obstructing the placement of the mold in the external isostatic press.

[0025] It should be noted that in this utility model...

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cold isostatic pressing mold for manufacturing ceramic targets, comprising a metal inner mold body (1), an upper sealing cover (2), a rubber sealing sleeve (3), an internal sealing gasket (6), and a lower sealing cover (7), characterized in that: The lower sealing cap (7) is fitted on the lower side of the annular side of the metal inner mold body (1), the upper sealing cap (2) is fitted on the upper side of the annular side of the metal inner mold body (1), the lower end face of the upper sealing cap (2) is fitted with an internal sealing gasket (6), and the annular side of both the upper sealing cap (2) and the lower sealing cap (7) is fitted with a rubber sealing sleeve (3). The rubber sealing sleeve (3) is provided with a tightening protection component (4) on its annular side, and the tightening protection component (4) is used to tighten and protect the rubber sealing sleeve (3). The bottom of the metal inner mold body (1) is provided with a support component (5), and the support component (5) is used to improve the stability of the metal inner mold body (1) when placed vertically. The tightening protection component (4) includes a lower metal protective shell (41), a lower tightening pressure strip (43), an inlet through hole (44), an upper metal protective shell (46), an upper tightening pressure strip (48), and an annular limiting groove (414). Two sets of upper metal protective shells (414) are assembled on the upper side of the annular side of the rubber sealing sleeve (3). 6) Two sets of upper tightening strips (48) are provided on the upper side of the inner wall of the upper metal protective shell (46). Two sets of lower metal protective shells (41) are assembled on the lower side of the annular side of the rubber sealing sleeve (3). Two sets of lower tightening strips (43) are provided on the lower side of the inner wall of the lower metal protective shell (41). Annular limiting grooves (414) are provided on both the upper and lower sides of the annular side of the rubber sealing sleeve (3). The annular limiting grooves (414) are matched with the upper tightening strips (48) and the lower tightening strips (43) respectively. Multiple inlet through holes (44) are provided inside the lower metal protective shell (41) and the upper metal protective shell (46).

2. The cold isostatic pressing mold for manufacturing ceramic targets according to claim 1, characterized in that: The upper metal protective shell (46) is fixedly connected to the side of the upper extension piece (47), and the lower metal protective shell (41) is fixedly connected to the side of the lower extension piece (42). A connecting screw (411) is inserted inside both the upper extension piece (47) and the lower extension piece (42). An anti-loosening washer (412) is fitted on the annular side of the connecting screw (411), and a fixing nut (413) is threaded on the annular side of the connecting screw (411).

3. The cold isostatic pressing mold for manufacturing ceramic targets according to claim 1, characterized in that: The support assembly (5) includes a support base (51), a support chassis (52), an anti-slip pad (53), a connecting thread head (54), and a connecting internal thread hole (55). The metal inner mold body (1) has a connecting internal thread hole (55) at the middle of its bottom. The connecting internal thread hole (55) is threaded with a connecting thread head (54). The lower end of the connecting thread head (54) is connected to the support base (51). The lower end of the support base (51) is provided with a support chassis (52). The lower end surface of the support chassis (52) is adhered with an anti-slip pad (53).

4. The cold isostatic pressing mold for manufacturing ceramic targets according to claim 1, characterized in that: The lower end face of the aforementioned metal protective shell (46) is provided with an assembly clip (45), and the upper end face of the lower metal protective shell (41) is provided with an assembly slot (49), and the assembly slot (49) matches the assembly clip (45).

5. A cold isostatic pressing mold for manufacturing ceramic targets according to claim 1, characterized in that: The upper sealing cap (2) and the lower sealing cap (7) have the same outer diameter, the upper sealing cap (2) and the lower sealing cap (7) have the same thickness, and the inner diameter of the rubber sealing sleeve (3) is the same as the outer diameter of the upper sealing cap (2) and the lower sealing cap (7).

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