A ceramic filler forming apparatus

Abstract

The application relates to the technical field of ceramic forming, in particular to a ceramic filler forming equipment, which comprises a machine table, a mold plate, a supporting plate, a supporting frame, a first hydraulic cylinder, a mold cavity arranged in the middle of the mold plate, a top column arranged below the mold cavity, a second hydraulic cylinder, a pressing block arranged at the bottom of the first hydraulic cylinder and matched with the shape of the mold cavity, and a material cleaning mechanism arranged at the left side of the machine table, wherein a second motor drives a reversing wheel to rotate intermittently by 60 degrees through a driving gear and a convex column, the rotating shaft switches a feeding block and an inner pressing plate to above the mold cavity in sequence, twice filling and twice intermediate compaction are realized, ceramic powder is uniformly distributed, ceramic powder is added twice before forming, ceramic powder in the middle position of the mold cavity is pressed twice, a ceramic blank is formed, the density of ceramic powder in the mold cavity is more uniform and compact, the problem that the density of ceramic powder in the middle position of a workpiece with a wide upper part and a narrow lower part is not uniform, which leads to layer cracking and micro-cracks of the workpiece during sintering, is solved.

Description

Technical Field

[0001] This invention relates to the field of ceramic forming technology, and in particular to a ceramic filler forming device. Background Technology

[0002] Ceramic materials are widely used in aerospace, chemical, electronic, and biomedical fields due to their excellent high-temperature resistance, corrosion resistance, high hardness, and chemical stability. As an important component of ceramic materials, the preparation and molding technology of ceramic fillers plays a decisive role in the performance of the final product. However, existing dry pressing molding (dry pressing molding is a process in which granulated ceramic powder with good flowability and suitable particle size distribution is loaded into a metal mold cavity, and pressure is applied by a press head. The press head moves within the mold cavity, transmitting pressure and causing the powder particles in the mold cavity to rearrange and deform and be compacted to form a ceramic blank with a certain strength and shape) is prone to uneven density distribution inside the mold body when processing irregularly shaped parts, especially workpieces that are narrow at the bottom and wide at the top, resulting in deterioration of the performance of the sintered product. Summary of the Invention

[0003] Therefore, in view of the above problems, the present invention proposes a ceramic filler forming device, which solves the above technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A ceramic filler molding device includes a machine base, a template on the top surface of the machine base, support plates spaced above the template, a support frame on the top of the support plates, a first hydraulic cylinder on the support frame for passing through the support plates, a mold cavity in the middle of the template, a top column below the mold cavity, a second hydraulic cylinder for driving the top column to rise, a pressure block at the bottom of the first hydraulic cylinder with a shape adapted to the mold cavity, and a material clearing mechanism on the left side of the machine base.

[0006] The template is provided with a material conveying mechanism, which includes a bushing rotatably disposed on one side of the template, a drive mechanism disposed on the outside of the bushing and used to drive the bushing to rotate, a rotating shaft slidably disposed on the inside of the bushing, a long key disposed on the outside of the rotating shaft and cooperating with the bushing, an extension plate disposed on the top of the rotating shaft, a material conveying block disposed on the side of the extension plate away from the rotating shaft, a material conveying pipe disposed on the material conveying block, a slide rail disposed on one side of the machine base, a slider slidably disposed on the slide rail and connected to the rotating shaft, a guide block disposed on the side of the slider away from the slide rail, a first motor spaced apart on one side of the slider, a drive rod disposed on the outside of the built-in output shaft of the first motor, and a convex shaft disposed on one side of the drive rod and in contact with the guide block.

[0007] Furthermore, the cleaning mechanism includes a water tank located on one side of the machine platform, casters located on the bottom of the water tank, a water pump located on the top of the water tank, a water pipe connected to the side of the water pump, a diversion pipe connected to the water pipe, and a spiral nozzle located on the side of the diversion pipe.

[0008] Furthermore, the spiral nozzle is provided in two parts, and the two spiral nozzles face opposite directions.

[0009] Furthermore, the extension plate is provided with an inclined plate at a 60° angle, and an inner spring is provided on the side of the inclined plate away from the extension plate, and an inner pressure plate is provided on the bottom surface of the inner spring.

[0010] Furthermore, the inclined plate is provided with an outer spring at the position of the inner spring, and the bottom surface of the outer spring is provided with a pressure ring. The diameter of the outer spring is larger than that of the inner spring.

[0011] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0012] This ceramic filler forming equipment, through the setting of the material conveying mechanism, the second motor drives the reversing wheel to rotate intermittently by 60° through the drive teeth and the cam, so that the rotating shaft sequentially switches the material conveying block and the inner pressure plate to the top of the mold cavity. The first motor controls the up and down movement of the rotating shaft through the drive rod and the guide block, realizing two filling and two intermediate compaction, so that the ceramic powder is evenly distributed. Finally, the first hydraulic cylinder presses down to form the mold, and the second hydraulic cylinder ejects the workpiece. Before forming, the ceramic powder is added twice and pressed twice in the middle position of the mold cavity to form a ceramic blank. The ceramic powder density in the mold cavity is more uniform and compact, avoiding uneven filling of ceramic powder in the middle part of the workpiece that is wider at the top and narrower at the bottom, which causes uneven density and leads to workpiece delamination and microcracks during sintering. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention.

[0014] Figure 2 This is a schematic diagram of the material cleaning mechanism of the present invention.

[0015] Figure 3 This is a partial structural cross-sectional schematic diagram of the present invention.

[0016] Figure 4 This is a top view schematic diagram of the material conveying mechanism structure of the present invention.

[0017] Figure 5 This is a front view schematic diagram of a partial structure of the material conveying mechanism of the present invention.

[0018] Figure 6 This is a partial structural diagram of the material conveying mechanism of the present invention.

[0019] Figure 7This is a cross-sectional view of the inner pressure plate and pressure ring of the present invention in use.

[0020] Figure 8 This is a schematic diagram of the drive mechanism structure of the present invention.

[0021] Figure 9 This is a top view schematic diagram of the drive mechanism structure of the present invention.

[0022] Numbering on the map:

[0023] 1. Machine base; 2. Template; 3. Support plate; 4. Support frame; 5. First hydraulic cylinder; 6. Mold cavity; 7. Top column; 8. Second hydraulic cylinder; 9. Pressing block; 10. Cleaning mechanism; 11. Conveying mechanism;

[0024] 101. Water tank; 102. Casters; 103. Water pump; 104. Water pipe; 105. Diverter pipe; 106. Spiral nozzle;

[0025] 201. Bushing; 202. Drive mechanism; 203. Rotating shaft; 204. Long key; 205. Extension plate; 206. Feeding block; 207. Feeding pipe; 208. Slide rail; 209. Slider; 210. Guide block; 211. First motor; 212. Drive rod; 213. Protruding shaft; 214. Reversing wheel; 215. Reversing groove; 216. Drive gear; 217. Drive protrusion; 218. Driven gear; 219. Horizontal plate; 220. Driven protrusion; 221. Second motor; 2051. Inclined plate; 2052. Inner spring; 2053. Inner pressure plate; 2054. Outer spring; 2055. Pressure ring. Detailed Implementation

[0026] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0027] refer to Figures 1 to 9 This embodiment provides a ceramic filler molding device, including a machine base 1, a template 2 disposed on the top surface of the machine base 1, a support plate 3 spaced above the template 2, a support frame 4 disposed on the top of the support plate 3, a first hydraulic cylinder 5 disposed on the support frame 4 and used to pass through the support plate 3, a mold cavity 6 disposed in the middle of the template 2, a top column 7 disposed below the mold cavity 6, a second hydraulic cylinder 8 used to drive the top column 7 to rise, a pressure block 9 disposed at the bottom of the first hydraulic cylinder 5 and whose shape is adapted to the mold cavity 6, and a material cleaning mechanism 10 disposed on the left side of the machine base 1.

[0028] The cleaning mechanism 10 includes a water tank 101 located on one side of the machine base 1, casters 102 located on the bottom of the water tank 101, a water pump 103 located on the top of the water tank 101, a water pipe 104 connected to one side of the water pump 103, a diversion pipe 105 connected to the water pipe 104, and a spiral nozzle 106 located on one side of the diversion pipe 105.

[0029] During use, ceramic powder is poured into the mold cavity 6 of template 2. After completion, the first hydraulic cylinder 5 drives the pressure block 9 to descend, pressing the pressure block 9 down to the position of the mold cavity 6 to form the ceramic powder. After completion, the first hydraulic cylinder 5 drives the pressure block 9 to move upward, and the second hydraulic cylinder 8 drives the top column 7 to rise, lifting the formed material to the top surface of template 2. Then the formed material is removed, and the second hydraulic cylinder 8 drives the top column 7 to descend and return to its original position. When it is necessary to clean the formed mold cavity 6 and pressure block 9, the first hydraulic cylinder 5 and the second hydraulic cylinder 8 are stopped. Then the water tank 101 is pushed towards the machine base 1, and the spiral nozzles 106 are placed in the positions of the mold cavity 6 and pressure block 9 respectively. The water pump 103 is started to clean the mold cavity 6. After cleaning, the water pump 103 is stopped, and the water tank 101 is moved to make the spiral nozzles 106 move away from the position above the mold cavity 6, which facilitates the rapid cleaning of the mold cavity 6 and pressure block 9.

[0030] Two spiral nozzles 106 are provided, and the two spiral nozzles 106 face opposite directions. One spiral nozzle 106 cleans the mold cavity 6, and the other spiral nozzle 106 cleans the pressure block 9.

[0031] The template 2 is provided with a material conveying mechanism 11, which includes a bushing 201 rotatably disposed on one side of the template 2, a drive mechanism 202 disposed on the outside of the bushing 201 and used to drive the bushing 201 to rotate, a rotating shaft 203 slidably disposed on the inside of the bushing 201, a long key 204 disposed on the outside of the rotating shaft 203 and cooperating with the bushing 201, an extension plate 205 disposed on the top of the rotating shaft 203, a material conveying block 206 disposed on the side of the extension plate 205 away from the rotating shaft 203, a material conveying pipe 207 disposed on the material conveying block 206, and a slide rail 20 on one side of the machine base 1. 8. A slider 209 slidably mounted on the slide rail 208 and connected to the rotating shaft 203, a guide block 210 located on the side of the slider 209 away from the slide rail 208, a first motor 211 spaced apart on one side of the slider 209, a drive rod 212 located outside the built-in output shaft of the first motor 211, and a convex shaft 213 located on one side of the drive rod 212 and in contact with the guide block 210. A solenoid valve can be placed inside the material conveying block 206 to control the ceramic powder on the material conveying pipe 207 to be conveyed to the mold cavity 6 through the material conveying block 206. The guide block 210 is inverted U-shaped.

[0032] The drive mechanism 202 includes a reversing wheel 214 located outside the bushing 201, reversing grooves 215 located outside the reversing wheel 214 and spaced at equal angles, a drive tooth 216 located on one side of the reversing wheel 214, a drive protrusion 217 located on the top surface of the drive tooth 216 and used to engage with the reversing groove 215, a driven tooth 218 meshing with the drive tooth 216, a cross plate 219 located on the top surface of the driven tooth 218, a driven protrusion 220 located on the side of the cross plate 219 away from the driven tooth 218, and a second motor 221 used to drive the drive tooth 216 to rotate. There are three reversing grooves 215, and the angle between two adjacent reversing grooves 215 is 60°.

[0033] The second motor 221 drives the drive gear 216 to rotate. The drive protrusion 217 on the drive gear 216 engages with the reversing groove 215 in the middle position of the reversing wheel 214. As the drive gear 216 rotates, it drives the reversing wheel 214 to rotate 60°. The reversing wheel 214 drives the bushing 201 and the rotating shaft 203 to rotate 60°. The first motor 211 drives the drive rod 212 to rotate. The drive rod 212 contacts the guide block 210 through the convex shaft 213, causing the rotating shaft 203 at the top of the slider 209 to move down. Since the guide block 210 is U-shaped, the drive rod 212 will hover when it rotates to a position close to the middle of the guide block 210. The extension plate 205 and the material conveying block 206 at the top of the rotating shaft 203 will fit against the top surface of the mold cavity 6. The feeding block 206 has a built-in solenoid valve passage. The feeding block 206 conveys ceramic powder into the mold cavity 6. After completion, the solenoid valve closes the circuit, and the drive rod 212 continues to rotate, driving the rotating shaft 203 and the feeding block 206 to move upward. At this time, as the drive gear 216 continues to rotate, another drive protrusion 217 on the top surface will engage with the reversing groove 215 on the reversing wheel 214, which will continue to drive the bushing 201 and the rotating shaft 203 to rotate 60° and move out of the reversing groove 215. As the rotating shaft 203 rotates 60°, the inner pressure plate 2053 on the rotating shaft 203 will be located above the mold cavity 6. The second motor 221 drives the rotating shaft 203 to move downward again, and the inner pressure plate 2053 will initially squeeze the position of the mold cavity 6, thus initially pressing the ceramic powder at the position of the mold cavity 6. After compaction, the second motor 221 drives the rotating shaft 203 and the inner pressure plate 2053 to move upward. After the reversing wheel 214 rotates 120° driven by the driving tooth 216, the reversing groove 215 at the edge of the driving tooth 216 will approach the driven protrusion 220 on the horizontal plate 219. As the driven tooth 218 rotates, the driven protrusion 220 engages with the reversing wheel 214, causing the reversing wheel 214 to rotate 120° in the opposite direction and move away from the position of the reversing wheel 214. After the rotating shaft 203 and the inner pressure plate 2053 rotate in the opposite direction and return to their original positions, the second motor 221 drives the driving tooth 216 to rotate, and the material conveying block 206 is transported to the top of the mold cavity 6 again to input ceramic powder into the mold cavity 6. Then the inner pressure plate 2053 compacts again. After the ceramic powder in the mold cavity 6 is compacted and added in two stages, the rotating shaft 203 and the inner pressure plate 2053 rotate in the opposite direction by 120°. At this time, the material conveying block 206 and the inner pressure plate 2053 will no longer block the mold cavity 6. Then, the first hydraulic cylinder 5 drives the pressure block 9 to move down and extrude the ceramic powder in the mold cavity 6 to form a ceramic blank. After completion, the first hydraulic cylinder 5 drives the pressure block 9 to move up, and the second hydraulic cylinder 8 drives the top column 7 to move up and eject the extruded material. Before forming, the ceramic powder is added in two stages and pressed twice in the middle of the mold cavity 6 to form a ceramic blank. The ceramic powder in the mold cavity 6 has a more uniform and compact density, which avoids uneven filling of the ceramic powder in the middle part of the workpiece that is wider at the top and narrower at the bottom, resulting in uneven density and causing workpiece delamination and microcracks during sintering.

[0034] The extension plate 205 is provided with an inclined plate 2051 at a 60° angle. An inner spring 2052 is provided on the side of the inclined plate 2051 away from the extension plate 205. An inner pressure plate 2053 is provided on the bottom surface of the inner spring 2052. An outer spring 2054 is provided on the inclined plate 2051 at the position of the inner spring 2052. A pressure ring 2055 is provided on the bottom surface of the outer spring 2054. The diameter of the outer spring 2054 is larger than the diameter of the inner spring 2052.

[0035] The inner pressure plate 2053 contacts the center of the mold cavity 6, and the pressure ring 2055 contacts the position outside the center of the mold cavity 6. When the mold cavity 6 forms a workpiece that is wider at the top and narrower at the bottom, the inner pressure plate 2053 presses the narrow position. During the first press, due to uneven filling in the central area, the inner spring 2052 drives the pressure plate to move down, pressing down the ceramic powder located in the middle of the mold cavity 6, and the central area will form a concave shape. During the second press, due to refilling, the pressure plate and pressure ring 2055 on the bottom surface of the inner spring 2052 and the outer spring 2054 will flatten the ceramic powder in the mold cavity 6. This structure has a good pressing effect on the center position and the outer ring position during the second press.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0040] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A ceramic filler forming device, characterized in that, The machine includes a machine base (1), a template (2) on the top surface of the machine base (1), a support plate (3) spaced above the template (2), a support frame (4) on the top of the support plate (3), a first hydraulic cylinder (5) on the support frame (4) and used to pass through the support plate (3), a mold cavity (6) in the middle of the template (2), a top column (7) below the mold cavity (6), a second hydraulic cylinder (8) for driving the top column (7) to rise, a pressure block (9) at the bottom of the first hydraulic cylinder (5) and whose shape is adapted to the mold cavity (6), and a material clearing mechanism (10) on the left side of the machine base (1). The template (2) is provided with a material conveying mechanism (11), which includes a bushing (201) rotatably disposed on one side of the template (2), a drive mechanism (202) disposed on the outside of the bushing (201) and used to drive the bushing (201) to rotate, a rotating shaft (203) slidably disposed on the inside of the bushing (201), a long key (204) disposed on the outside of the rotating shaft (203) and cooperating with the bushing (201), an extension plate (205) disposed on the top of the rotating shaft (203), and a material conveying block (206) disposed on the side of the extension plate (205) away from the rotating shaft (203). ), a conveying pipe (207) on the conveying block (206), a slide rail (208) on one side of the machine base (1), a slider (209) slidably disposed on the slide rail (208) and connected to the rotating shaft (203), a guide block (210) on the side of the slider (209) away from the slide rail (208), a first motor (211) spaced apart on one side of the slider (209), a drive rod (212) disposed outside the built-in output shaft of the first motor (211), and a convex shaft (213) disposed on one side of the drive rod (212) and in contact with the guide block (210).

2. The ceramic filler forming equipment according to claim 1, characterized in that: The cleaning mechanism (10) includes a water tank (101) located on one side of the machine base (1), a caster wheel (102) located on the bottom of the water tank (101), a water pump (103) located on the top of the water tank (101), a water pipe (104) connected to one side of the water pump (103), a diversion pipe (105) connected to the water pipe (104), and a spiral nozzle (106) located on one side of the diversion pipe (105).

3. The ceramic filler forming equipment according to claim 2, characterized in that: Two spiral nozzles (106) are provided, and the two spiral nozzles (106) face opposite directions.

4. The ceramic filler forming equipment according to claim 3, characterized in that: The extension plate (205) is provided with an inclined plate (2051) at a 60° angle. An inner spring (2052) is provided on the side of the inclined plate (2051) away from the extension plate (205). An inner pressure plate (2053) is provided on the bottom surface of the inner spring (2052).

5. The ceramic filler forming equipment according to claim 4, characterized in that: The inclined plate (2051) is provided with an outer spring (2054) at the position of the inner spring (2052). The bottom surface of the outer spring (2054) is provided with a pressure ring (2055). The diameter of the outer spring (2054) is larger than that of the inner spring (2052).

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