Ceramic filler forming equipment

Abstract

The invention relates to the technical field of ceramic forming, in particular to ceramic filler forming equipment. Comprising a machine table, a mold plate, a supporting plate, a supporting frame, a first hydraulic cylinder, a mold cavity formed in the middle of the mold plate, a jacking 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 mold cavity in shape, and a material cleaning mechanism arranged on the left side of the machine table. Wherein a second motor drives a reversing wheel to intermittently rotate by 60 degrees through a driving tooth and a convex column, so that a rotating shaft sequentially switches a material conveying block and an inner pressing plate to the position above a mold cavity, two times of filling and two times of middle compaction are achieved, ceramic powder is evenly distributed, before forming, the ceramic powder is added twice, and the ceramic powder is pressed twice in the middle of the mold cavity to form a ceramic blank; the density of the ceramic powder in the die cavity is more uniform and compact, and the problem that the middle part of a workpiece with a wide upper part and a narrow lower part is non-uniformly filled with the ceramic powder, so that the density is non-uniform, and the workpiece is layered and micro-cracked during sintering is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic forming, in particular to a ceramic filler forming device. Background Art

[0002] Ceramic materials are widely used in aerospace, chemical industry, electronics, biomedicine and other fields due to their excellent properties such as 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 their final products. However, the existing dry pressing molding (dry pressing molding is to put ceramic powder with good fluidity and appropriate particle size distribution after granulation into a metal mold cavity, apply pressure through the pressure head, and the pressure head moves in the mold cavity to transmit pressure, so that the powder particles in the mold cavity are rearranged and deformed and compacted to form a ceramic blank with a certain strength and shape) is prone to uneven density distribution in the molding body when processing special-shaped parts, especially workpieces that are narrow at the bottom and wide at the top, resulting in delamination and microcracks, resulting in decreased performance of the sintered product. Summary of the Invention

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

[0004] To achieve the above object, the present invention adopts the following technical solutions: A ceramic filler forming device includes a machine platform, a template disposed on the top surface of the machine platform, a support plate spaced above the template, a support frame disposed on top of the support plate, a first hydraulic cylinder disposed on the support frame and used to pass through the support plate, a mold cavity disposed in the middle of the template, a top column disposed below the mold cavity, a second hydraulic cylinder for driving the top column to rise, a pressure block disposed at the bottom of the first hydraulic cylinder and having a shape adapted to the mold cavity, and a material clearing mechanism disposed on the left side of the machine platform; The template is provided with a feeding mechanism, which includes a sleeve rotatably arranged on one side of the template, a driving mechanism arranged on the outside of the sleeve and used to drive the sleeve to rotate, a rotating shaft slidably arranged on the inside of the sleeve, a long key arranged on the outside of the rotating shaft and cooperating with the sleeve, an extension plate arranged on the top of the rotating shaft, a feeding block arranged on the side of the extension plate away from the rotating shaft, a feeding pipe arranged on the feeding block, a slide rail arranged on one side of the machine, a slider slidably arranged on the slide rail and connected to the rotating shaft, a guide block arranged on the side of the slider away from the slide rail, a first motor arranged at a distance on one side of the slider, a driving rod arranged on the outside of the built-in output shaft of the first motor, and a convex shaft arranged on one side of the driving rod and in contact with the guide block.

[0005] Furthermore, the cleaning mechanism includes a water tank arranged on one side of the machine, a universal wheel arranged on the bottom of the water tank, a water pump arranged on the top of the water tank, a water pipe connected to one side of the water pump, a diversion pipe connected to the water pipe, and a spiral nozzle arranged on one side of the diversion pipe.

[0006] Furthermore, two spiral nozzles are provided, and the two spiral nozzles face opposite directions.

[0007] Furthermore, an inclined plate with an angle of 60° is provided on the extension plate, 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.

[0008] Furthermore, the inclined plate is provided with an outer spring at the position of the inner spring, a compression ring is provided on the bottom surface of the outer spring, and the diameter of the outer spring is larger than the diameter of the inner spring.

[0009] By adopting the above technical solution, the beneficial effects of the present invention are: This ceramic filler forming equipment, through the setting of the feeding mechanism, the second motor drives the reversing wheel to intermittently rotate 60 degrees through the driving teeth and the convex column, so that the rotating shaft switches the feeding block and the inner pressure plate to the top of the mold cavity in sequence, and the first motor controls the rotating shaft to move up and down through the driving rod and the guide block, realizing two fillings and two intermediate compactions, so that the ceramic powder is evenly distributed. Finally, the first hydraulic cylinder presses down to form the workpiece, and the second hydraulic cylinder pushes out the workpiece. Before forming, the ceramic powder is divided into two feedings and the ceramic powder in the middle position of the mold cavity is pressed twice to form a ceramic embryo. The density of the ceramic powder in the mold cavity is more uniform and compact, avoiding uneven filling of ceramic powder in the middle part of the workpiece that is wide at the top and narrow at the bottom, resulting in non-uniform density, which leads to delamination and micro cracks in the workpiece during sintering. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention.

[0011] Figure 2 It is a structural schematic diagram of the material clearing mechanism of the present invention.

[0012] Figure 3 It is a schematic cross-sectional view of the local structure of the present invention.

[0013] Figure 4 It is a schematic top view of the feeding mechanism structure of the present invention.

[0014] Figure 5 It is a front view schematic diagram of the local structure of the feeding mechanism of the present invention.

[0015] Figure 6 It is a schematic diagram of the partial structure of the feeding mechanism of the present invention.

[0016] Figure 7 It is a schematic cross-sectional view of the structure of the inner pressure plate and the pressure ring of the present invention in use.

[0017] Figure 8 It is a schematic diagram of the driving mechanism structure of the present invention.

[0018] Figure 9It is a schematic top view of the driving mechanism structure of the present invention.

[0019] Numbers in the figure: 1. Machine platform; 2. Template; 3. Support plate; 4. Support frame; 5. First hydraulic cylinder; 6. Die cavity; 7. Ejector column; 8. Second hydraulic cylinder; 9. Press block; 10. Material clearing mechanism; 11. Material feeding mechanism; 101. Water tank; 102. Universal wheel; 103. Water pump; 104. Water pipe; 105. Diverter pipe; 106. Spiral nozzle; 201. Bushing; 202. Driving mechanism; 203. Rotating shaft; 204. Long key; 205. Extension plate; 206. Feed block; 207. Feed pipe; 208. Slide rail; 209. Slider; 210. Guide block; 211. First motor; 212. Driving rod; 213. Cam; 214. Reversing wheel; 215. Reversing groove; 216. Driving tooth; 217. Driving boss; 218. Driven tooth; 219. Cross plate; 220. Driven boss; 221. Second motor; 2051. Inclined plate; 2052. Inner spring; 2053. Inner pressure plate; 2054. Outer spring; 2055. Pressing ring. DETAILED DESCRIPTION

[0020] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0021] refer to Figures 1 to 9 The present embodiment provides a ceramic filler forming device, including a machine platform 1, a template 2 arranged on the top surface of the machine platform 1, a support plate 3 arranged above the template 2, a support frame 4 arranged on the top of the support plate 3, a first hydraulic cylinder 5 arranged on the support frame 4 and used to pass through the support plate 3, a mold cavity 6 arranged in the middle of the template 2, a top column 7 arranged below the mold cavity 6, a second hydraulic cylinder 8 for driving the top column 7 to rise, a pressure block 9 arranged at the bottom of the first hydraulic cylinder 5 and having a shape adapted to the mold cavity 6, and a material clearing mechanism 10 arranged on the left side of the machine platform 1.

[0022] The cleaning mechanism 10 includes a water tank 101 provided on one side of the machine 1, a universal wheel 102 provided on the bottom of the water tank 101, a water pump 103 provided 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 provided on one side of the diversion pipe 105.

[0023] When in use, ceramic powder is poured into the mold cavity 6 of template 2. After completion, the first hydraulic cylinder 5 drives the pressing block 9 to descend, and the pressing block 9 is pressed down to the mold cavity 6 position to pressure-form the ceramic powder. After completion, the first hydraulic cylinder 5 drives the pressing block 9 to move upward, and the second hydraulic cylinder 8 drives the top column 7 to rise, and lifts the formed material to the top surface of the template 2. Then the formed material is taken out, 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 the pressing block 9, the first hydraulic cylinder 5 and the second hydraulic cylinder 8 are stopped, and then the water tank 101 is pushed toward the machine 1, and the spiral nozzle 106 is placed in the mold cavity 6 and the pressing block 9 positions respectively. Starting the water pump 103 can complete the cleaning of the mold cavity 6. After cleaning, the water pump 103 stops running, and then the water tank 101 is moved to make the spiral nozzle 106 leave the position above the mold cavity 6, which is conducive to rapid cleaning of the mold cavity 6 and the pressing block 9.

[0024] There are two spiral nozzles 106 , which face opposite directions. One spiral nozzle 106 cleans the mold cavity 6 , and the other spiral nozzle 106 cleans the pressing block 9 .

[0025] The template 2 is provided with a feeding mechanism 11, which includes a sleeve 201 rotatably provided on one side of the template 2, a driving mechanism 202 provided on the outside of the sleeve 201 and used to drive the sleeve 201 to rotate, a rotating shaft 203 slidably provided on the inside of the sleeve 201, a long key 204 provided on the outside of the rotating shaft 203 and cooperating with the sleeve 201, an extension plate 205 provided on the top of the rotating shaft 203, a feeding block 206 provided on the side of the extension plate 205 away from the rotating shaft 203, a feeding pipe 207 provided on the feeding block 206, and a slide rail 20 provided on one side of the machine 1. 8. A slider 209 slidingly arranged on the slide rail 208 and connected to the rotating shaft 203, a guide block 210 arranged 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 driving rod 212 arranged on the outside of the built-in output shaft of the first motor 211, and a convex shaft 213 arranged on one side of the driving rod 212 and in contact with the guide block 210. A solenoid valve can be placed in the feed block 206 to control the ceramic powder on the feed pipe 207 to be transported into the mold cavity 6 through the feed block 206. The guide block 210 is in an inverted U shape.

[0026] The driving mechanism 202 includes a reversing wheel 214 arranged on the outside of the sleeve 201, a reversing groove 215 arranged on the outside of the reversing wheel 214 and spaced at the same angle, a driving tooth 216 arranged on one side of the reversing wheel 214, a driving boss 217 arranged on the top surface of the driving tooth 216 and used to cooperate with the reversing groove 215, a driven tooth 218 engaged with the driving tooth 216, a transverse plate 219 arranged on the top surface of the driven tooth 218, a driven boss 220 arranged on the side of the transverse plate 219 away from the driven tooth 218, and a second motor 221 for driving the driving tooth 216 to rotate. There are three reversing grooves 215, and the angle between two adjacent reversing grooves 215 is 60°.

[0027] The second motor 221 drives the driving tooth 216 to rotate, and the driving boss 217 on the driving tooth 216 is stuck in the reversing groove 215 in the middle position of the reversing wheel 214. As the driving tooth 216 rotates, the reversing wheel 214 will be driven to rotate 60°, and the reversing wheel 214 will drive the sleeve 201 and the rotating shaft 203 to rotate 60°. The first motor 211 drives the driving rod 212 to rotate, and the driving rod 212 contacts the guide block 210 through the convex shaft 213 to drive the rotating shaft 203 at the top of the slider 209 to move downward. Since the guide block 210 is in an inverted U shape, the driving rod 212 rotates to a position close to the middle of the guide block 210 and will hover. The extension plate 205 on the top of the rotating shaft 203 and the feed block 206 will fit in the top surface of the mold cavity 6. The feeding block 206 has a built-in electromagnetic valve passage, and the feeding block 206 transports the ceramic powder into the mold cavity 6. After completion, the electromagnetic valve closed-circuit driving rod 212 continues to rotate to drive the rotating shaft 203 and the feeding block 206 to move upward. At this time, as the driving tooth 216 continues to rotate, another driving protrusion 217 on the top surface will be stuck in the reversing groove 215 on the reversing wheel 214, and will continue to drive the sleeve 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, and the second motor 221 will drive the rotating shaft 203 to move downward again. The inner pressure plate 2053 will perform preliminary extrusion on the position of the mold cavity 6, and the ceramic powder at the position of the mold cavity 6 will be initially squeezed. After the compaction is completed, the second motor 221 drives the rotating shaft 203 and the inner pressure plate 2053 to move upward. After the reversing wheel 214 is driven by the driving gear 216 to rotate 120 degrees, the reversing groove 215 at the edge of the driving gear 216 will be close to the driven boss 220 on the cross plate 219. As the driven gear 218 rotates, the driven boss 220 is clamped into the reversing wheel 214, which will drive the reversing wheel 214 to rotate 120 degrees in the opposite direction and leave the position of the reversing wheel 214, driving the rotating shaft 203 and the inner pressure plate 2053 to rotate in the opposite direction and return to their original position. At this time, the second motor 221 drives the driving gear 216 to rotate, and again transports the feed block 206 to the top of the mold cavity 6 to input ceramic powder into the mold cavity 6, and then the inner pressure plate 2053 is pressed again. The ceramic powder in the mold cavity 6 is compacted and added twice. After the rotating shaft 203 and the inner pressure plate 2053 rotate 120 degrees in the opposite direction again, there will be no feed block 206 and the inner pressure plate 2053 blocking the top of the mold cavity 6. At this time, the first hydraulic cylinder 5 drives the pressing block 9 to move downward to extrude the ceramic powder in the mold cavity 6. After completion, the first hydraulic cylinder 5 drives the pressing block 9 to move upward, and the second hydraulic cylinder 8 drives the ejector column 7 to move upward to eject the upper extruded material. Before molding, the ceramic powder is added twice and the ceramic powder in the middle position of the mold cavity 6 is pressed twice to form a ceramic embryo. The density of the ceramic powder in the mold cavity 6 is more uniform and compact, avoiding uneven filling of ceramic powder in the middle part of the workpiece that is wide at the top and narrow at the bottom, making its density non-uniform, resulting in delamination and microcracks in the workpiece during sintering.

[0028] The extension plate 205 is provided with an inclined plate 2051 with an angle of 60°, and the inclined plate 2051 is provided with an inner spring 2052 on the side away from the extension plate 205, and the bottom of the inner spring 2052 is provided with an inner pressure plate 2053, and the inclined plate 2051 is provided with an outer spring 2054 at the position of the inner spring 2052, and the bottom of the outer spring 2054 is provided with a pressure ring 2055, and the diameter of the outer spring 2054 is larger than the diameter of the inner spring 2052.

[0029] The inner pressure plate 2053 contacts the center position of the mold cavity 6, and the pressure ring 2055 contacts the position outside the center of the mold cavity 6. When the model formed by the mold cavity 6 is a workpiece that is wide at the top and narrow at the bottom, the inner pressure plate 2053 presses the narrow position. During the first pressing, due to the uneven filling of the center area, the inner spring 2052 drives the pressure plate to move downward, pressing down the ceramic powder located in the middle position of the mold cavity 6, and the center area will form a concave shape. During the second pressing, due to the refilling, the pressure plate and pressure ring 2055 on the bottom of the inner spring 2052 and the outer spring 2054 will flatten the ceramic powder in the mold cavity 6. When this structure is pressed for the second time, the pressing effect on the center position and the outer ring position is good.

[0030] 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 the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0031] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0033] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0034] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

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

2. The ceramic filler forming device according to claim 1, characterized in that: The cleaning mechanism (10) comprises a water tank (101) provided on one side of the machine (1), a universal wheel (102) provided on the bottom surface of the water tank (101), a water pump (103) provided 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) provided on one side of the diversion pipe (105).

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

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

5. The ceramic filler forming device 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), and 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 that of the inner spring (2052).

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