Cold isostatic pressing forming die structure for ceramic powder

Abstract

The utility model discloses a ceramic powder cold isostatic pressing forming die structure, which relates to the technical field of powder metallurgy and comprises a base plate and a fixing rod fixedly connected to the middle position of the upper surface of the base plate, a rubber sleeve is arranged on the upper surface of the base plate outside the fixing rod, and the lower end of the rubber sleeve is fixedly connected with a lower fixing ring. An upper fixing ring is fixedly connected to the upper end of the rubber sleeve, a top cover is arranged at the upper end of the upper fixing ring, and an auxiliary discharging mechanism is jointly arranged inside and outside the base plate. Compared with an existing common ceramic powder cold isostatic pressing forming die structure, when the rubber sleeve is installed on the base plate, the positioning groove can be connected to the positioning block in a clamped mode, rapid positioning is carried out, the abutting rod slides upwards, the discharging abutting ring can be driven to slide on the outer circle face of the fixing rod, and therefore the ceramic powder cold isostatic pressing forming die structure is formed. By means of the design, an operator can conveniently conduct abutting discharging, and the situation that the finished products are directly taken and damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of powder metallurgy, in particular to a cold isostatic pressing forming die structure for ceramic powder. Background Technique

[0002] Isostatic pressing forming is an important process in the forming of ceramic powder. The forming of ceramic powder is generally divided into cold die pressing forming, cold die pressing forming plus cold isostatic pressing densification, direct cold isostatic pressing forming. The process products of isostatic pressing forming have the outstanding advantages of uniform organizational structure, high density, small sintering shrinkage rate, low die cost, high production efficiency, and can form complex-shaped, slender products, large-size products, and precision-size products, etc.

[0003] For example, a cold isostatic pressing forming die for ceramic powder with the application number of 201621296055.2. The utility model has a simple structure and reasonable design, solves the disadvantages of large deviation in the shape and size of the conventional isostatic pressing formed blank, uneven thickness, and low finished product rate, and realizes the precise forming of a blank with a large plane size and a thin thickness. However, through the analysis of the above comparative patent, it is found that the rubber-coated sleeve of this die and the structures of most existing cold isostatic pressing forming dies for ceramic powder are separate rubber sleeves. Before pressurization, both ends of the rubber sleeve of most cold isostatic pressing forming dies for ceramic powder need to be tied up, which is easy to prevent the rubber sleeve from generating large deformation and affecting the finished product quality, and the structures of most dies are not convenient for operators to unload the material.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structural deficiencies, and a cold isostatic pressing forming die structure for ceramic powder is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cold isostatic pressing forming die structure for ceramic powder to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: A cold isostatic pressing forming die structure for ceramic powder, including a chassis and a fixed rod fixedly connected to the middle position of the upper surface of the chassis. A rubber-coated sleeve is arranged on the upper surface of the chassis outside the fixed rod. The lower end of the rubber-coated sleeve is fixedly connected with a lower fixing ring, the upper end of the rubber-coated sleeve is fixedly connected with an upper fixing ring, a top cover is arranged at the upper end of the upper fixing ring, and an auxiliary unloading mechanism is jointly arranged inside and outside the chassis.

[0007] Preferably, four positioning blocks are fixedly connected to the periphery of the upper surface of the chassis, and four positioning grooves are opened on the lower surface of the lower fixing ring.

[0008] Preferably, the auxiliary unloading mechanism includes a fitting groove formed on the upper surface of the chassis. A unloading abutting ring is arranged inside the fitting groove. The lower surface of the unloading abutting ring is fixedly connected with a docking block, and an abutting mechanism is arranged below the chassis.

[0009] Preferably, the abutting mechanism includes an abutting rod arranged below the chassis, and the abutting rod can be inserted into the docking groove of the docking block. A magnetic attracting block is fixedly connected to the upper end of the abutting rod, and a fixed disk is fixedly connected to the lower end of the abutting rod.

[0010] Preferably, two arc grooves are formed on the inner circular surface of the upper fixing ring, and two arc strips are fixedly connected to the outer circular surface of the top cover.

[0011] Preferably, an upper handle is fixedly connected to the upper surface of the top cover, and a lower handle is fixedly connected to the lower surface of the fixed disk.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Through the settings of the chassis, fixed rod, rubber sleeve, lower fixing ring, upper fixing ring, positioning block, positioning groove, top cover, auxiliary unloading mechanism, fitting groove, unloading abutting ring, docking block, abutting mechanism, abutting rod, magnetic attracting block, and fixed disk in the present utility model, the upper fixing ring and the lower fixing ring at the upper and lower ends of the rubber sleeve can limit the diameters of the upper and lower ends of the rubber sleeve, avoiding bundling the upper and lower ends of the rubber sleeve again. The positioning groove can be clamped on the positioning block for rapid positioning. After the ceramic powder is cold isostatically formed, the abutting mechanism can be used to drive the unloading abutting ring to slide on the outer circular surface of the fixed rod to push the formed finished product for unloading. This design can facilitate the operator to push and unload, and avoid directly taking and damaging the finished product;

[0014] 2. Through the settings of the arc groove, arc strip, upper handle, and lower handle in the present utility model, during cold isostatic pressing, first install the rubber sleeve, fill ceramic powder between the fixed rod and the rubber sleeve. When pressing the top cover, the arc strip can be screwed into the inner part of the arc groove. At this time, the lower surface of the top cover can compact the powder downward to improve the quality of the finished product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic three-dimensional structure diagram of the whole of the present utility model;

[0016] Figure 2 is a schematic three-dimensional split structure diagram of the structure of the present utility model; Figure 1 is a schematic enlarged structure diagram of A in the present utility model;

[0017] Figure 3 is the present utility model; Figure 2 is a schematic enlarged structure diagram of A in the present utility model;

[0018] Figure 4 is the present utility model; Figure 1Schematic diagram of the upward-looking split three-dimensional structure;

[0019] Figure 5 This is the front view sectional structure schematic diagram of the chassis 1 of the present utility model.

[0020] In the figure: 1. Chassis; 2. Fixed rod; 3. Rubber sleeve; 4. Lower fixing ring; 41. Positioning block; 42. Positioning groove; 5. Upper fixing ring; 6. Top cover; 7. Auxiliary discharging mechanism; 71. Fitting groove; 72. Discharging abutting ring; 73. Docking block; 74. Abutting mechanism; 741. Abutting rod; 742. Magnetic attraction block; 743. Fixed disk; 8. Arc groove; 9. Arc strip; 10. Upper handle; 11. Lower handle. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Such as Figure 1 , Figure 2 And Figure 4 , Figure 5As shown, a ceramic powder cold isostatic pressing mold structure comprises a chassis 1 and a fixing rod 2 fixedly connected to the middle position of the upper surface of the chassis 1, a rubber sleeve 3 is arranged on the upper surface of the chassis 1 outside the fixing rod 2, a lower fixing ring 4 is fixedly connected to the lower end of the rubber sleeve 3, an upper fixing ring 5 is fixedly connected to the upper end of the rubber sleeve 3, a top cover 6 is arranged on the upper end of the upper fixing ring 5, an auxiliary unloading mechanism 7 is arranged inside and outside the chassis 1, and four fixing mechanisms are fixedly connected to the outer periphery of the upper surface of the chassis 1. The positioning block 41, the lower surface of the lower fixing ring 4 is provided with four positioning grooves 42, the spacing of the positioning block 41 is equidistant from the positioning groove 42, the auxiliary unloading mechanism 7 includes a fitting groove 71 provided on the upper surface of the chassis 1, a unloading collar 72 is provided inside the fitting groove 71, a docking block 73 is fixedly connected to the lower surface of the unloading collar 72, an abutting mechanism 74 is provided below the chassis 1, the abutting mechanism 74 includes a collar 741 provided below the chassis 1, and the collar 741 can be plugged into the docking block The upper end of the push rod 741 is fixedly connected to a magnetic block 742, and the lower end of the push rod 741 is fixedly connected to a fixing plate 743. The lower surface of the docking block 73 is provided with a docking groove for the push rod 741 and the magnetic block 742 to be plugged in. The upper fixing ring 5 and the lower fixing ring 4 at the upper and lower ends of the rubber sleeve 3 can limit the diameter of the ring opening at the upper and lower ends of the rubber sleeve 3 to avoid secondary binding of the upper and lower ends of the rubber sleeve 3. When the rubber sleeve 3 is installed on the chassis 1, the positioning groove 42 can be snapped into the positioning block 41, and rapid positioning is performed to prevent displacement between the rubber sleeve 3 and the chassis 1, which affects the quality of the finished product. After the ceramic powder is cold isostatically pressed, the abutting rod 741 in the abutting mechanism 74 can be used to abut the docking block 73 on the lower surface of the unloading abutting ring 72. The magnetic block 742 can be adsorbed on the iron docking block 73, and the abutting rod 741 can slide upward. The abutting rod 741 can slide through the chassis 1, drive the unloading abutting ring 72 to slide on the outer cylindrical surface of the fixed rod 2, and the finished product after molding can be unloaded by abutting.

[0023] like Figure 3 - Figure 4 As shown, the inner circumference of the upper fixing ring 5 is provided with two arc grooves 8 , and the outer circumference of the top cover 6 is fixedly connected with two arc strips 9 , which can be slidably inserted into the arc grooves 8 .

[0024] Furthermore, an upper handle 10 is fixedly connected to the upper surface of the top cover 6 , and a lower handle 11 is fixedly connected to the lower surface of the fixed plate 743 . The upper handle 10 is conveniently screwed into the top cover 6 , and the lower handle 11 is conveniently slid against the rod 741 .

[0025] Working principle: When using the cold isostatic pressing forming die structure for ceramic powder, first, the upper fixing ring 5 and the lower fixing ring 4 at the upper and lower ends of the rubber sleeve 3 can limit the ring diameter at the upper and lower ends of the rubber sleeve 3, avoiding bundling the ring openings at the upper and lower ends of the rubber sleeve 3 again. When installing the rubber sleeve 3 on the chassis 1, the positioning groove 42 can be clamped on the positioning block 41 for quick positioning to prevent displacement between the rubber sleeve 3 and the chassis 1, which affects the quality of the finished product. After the cold isostatic pressing of the ceramic powder, the push rod 741 in the abutting mechanism 74 can abut on the docking block 73 on the lower surface of the unloading abutting ring 72, and the magnetic attraction block 742 can be adsorbed on the iron docking block 73. Slide the push rod 741 upward, and the push rod 741 can slide through the chassis 1 to drive the unloading abutting ring 72 to slide on the outer cylindrical surface of the fixed rod 2 to push and unload the formed finished product. During cold isostatic pressing, first install the rubber sleeve 3, fill the ceramic powder between the fixed rod 2 and the rubber sleeve 3. When pressing the top cover 6, the arc-shaped strip 9 can be screwed into the arc-shaped groove 8. At this time, the lower surface of the top cover 6 can compact the powder downward to improve the quality of the finished product. This is the working principle of the cold isostatic pressing forming die structure for ceramic powder.

Claims

1. A cold isostatic pressing forming die structure for ceramic powder, comprising a chassis (1) and a fixing rod (2) fixedly connected to the middle position of the upper surface of the chassis (1), characterized in that, A rubber sleeve (3) is provided on the upper surface of the chassis (1) outside the fixing rod (2); the lower end of the rubber sleeve (3) is fixedly connected to a lower fixing ring (4); the upper end of the rubber sleeve (3) is fixedly connected to an upper fixing ring (5); a top cover (6) is provided at the upper end of the upper fixing ring (5); and an auxiliary unloading mechanism (7) is provided inside and outside the chassis (1).

2. The structure of a cold isostatic pressing mold for ceramic powder according to claim 1, characterized in that, Four positioning blocks (41) are fixedly connected to the periphery of the upper surface of the chassis (1), and four positioning grooves (42) are formed on the lower surface of the lower fixing ring (4).

3. The structure of a cold isostatic pressing mold for ceramic powder according to claim 1, characterized in that, The auxiliary unloading mechanism (7) comprises a fitting groove (71) formed on the upper surface of the chassis (1), a unloading abutting ring (72) is arranged inside the fitting groove (71), a docking block (73) is fixedly connected to the lower surface of the unloading abutting ring (72), and an abutting mechanism (74) is arranged below the chassis (1).

4. A cold isostatic pressing die structure for ceramic powder according to claim 3, characterized in that, The abutment mechanism (74) comprises a butt rod (741) arranged below the chassis (1), and the butt rod (741) can be inserted into a butt groove of a butt block (73), the upper end of the butt rod (741) is fixedly connected to a magnetic block (742), and the lower end of the butt rod (741) is fixedly connected to a fixed plate (743).

5. The structure of a cold isostatic pressing mold for ceramic powder according to claim 1, characterized in that, The inner circumferential surface of the upper fixing ring (5) is provided with two arc-shaped grooves (8), and the outer circumferential surface of the top cover (6) is fixedly connected with two arc-shaped strips (9).

6. The structure of a cold isostatic pressing mold for ceramic powder according to claim 4, characterized in that An upper handle (10) is fixedly connected to the upper surface of the top cover (6), and a lower handle (11) is fixedly connected to the lower surface of the fixed plate (743).

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