Tabletting device for silicon nitride ceramic body

Abstract

The invention provides a tabletting device for a silicon nitride ceramic body, and belongs to the technical field of silicon nitride tabletting. Comprising a base, a top plate is erected on the base, an air cylinder is fixed to the top plate, a crankshaft of the air cylinder vertically penetrates out of the lower portion of the top plate and is fixedly provided with a lifting plate, an upper mold is fixed to the lower end face of the lifting plate, a fixing groove is formed in the upper end face of the base, and a lower mold is fixed in an upper port of the fixing groove; a movable plate capable of moving up and down is arranged at the bottom in the fixing groove, follow-up columns are fixed to the two ends of the movable plate, and magnetic blocks are fixed to the top ends of the follow-up columns and matched with the lower end face of the lifting plate in a magnetic attraction mode. A top column is installed in the middle of the movable plate and vertically penetrates into the inner bottom of the lower die, a dust collection channel is formed in the top column, vent holes are formed in the side face of the bottom of the dust collection channel, and dust collection holes are formed in the side face of the top of the dust collection channel. According to the mold, pressed silicon nitride ceramic chips can be conveniently and rapidly taken out, scraps of the mold can be conveniently and thoroughly sucked away, the follow-up tabletting quality can be guaranteed, and the use effect is good.

Description

Technical Field

[0001] The invention relates to the technical field of silicon nitride tablet pressing, in particular to a tablet pressing device for a silicon nitride ceramic body. Background Art

[0002] The tablet pressing device of silicon nitride ceramic body is mainly used to press silicon nitride powder into ceramic sheets of the desired shape, which is commonly seen in the production process of silicon nitride ceramics. The dry pressing molding device is a common tablet pressing molding device, which mainly includes a mold and a press. The processed raw material powder is placed in the mold and molded under a certain pressure. The process is simple and the production efficiency is high. It is suitable for preparing ceramic products with simple shapes and small sizes.

[0003] However, after the existing dry pressing molding device presses the raw materials into silicon nitride ceramic sheets, the ceramic sheets often fit tightly to the mold, making it difficult to quickly remove them, affecting production efficiency. After the tableting is completed, residues and impurities are likely to remain on the inner wall of the concave cavity of the mold, which is difficult to clean thoroughly, easily affecting the subsequent tableting quality.

[0004] Therefore, the present application provides a silicon nitride ceramic body pressing device to solve the above technical problems. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a silicon nitride ceramic tabletting device to solve the problem in the prior art that the dry pressing molding device is not convenient for quickly removing the pressed silicon nitride ceramic tablets, and that tablet impurities are easily left in the mold and are difficult to clean thoroughly, affecting the quality of subsequent silicon nitride tablets.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A tablet pressing device for a silicon nitride ceramic body, comprising a base, a top plate mounted on the base, a cylinder fixed on the top plate, a shaft of the cylinder vertically passing through the bottom of the top plate, a lifting plate fixed thereon, an upper mold fixed on the lower end surface of the lifting plate, a fixing groove formed on the upper end surface of the base, a lower mold fixed in the upper end of the fixing groove;

[0008] A movable plate that can move up and down is arranged at the bottom of the fixed groove, follower columns are fixed at both ends of the movable plate, a magnetic block is fixed at the top of the follower column, and the magnetic block is magnetically matched with the lower end surface of the lifting plate;

[0009] A top column is installed in the middle of the movable plate, and the top column vertically penetrates into the bottom of the lower mold. A dust suction channel is opened in the top column, a vent hole is opened on the bottom side of the dust suction channel, a dust suction hole is opened on the top side of the dust suction channel, and a dust suction air pump is installed on the outer side of the base, and the dust suction air pump is connected to the fixed groove.

[0010] Optionally, a plurality of guide pillars are fixed to the edge of the upper end surface of the base, and the top plate is fixed to the top of the plurality of guide pillars.

[0011] Optionally, a through hole is provided on the edge of the lifting plate for the guide column to vertically pass through.

[0012] Optionally, an adjustment rod for supporting the movable plate is vertically inserted into the bottom of the base.

[0013] Optionally, the top end of the adjusting rod is threadedly inserted into the fixing groove, and a supporting plate is rotatably mounted thereon, and the supporting plate abuts against the lower end surface of the movable plate.

[0014] Optionally, the bottom end of the adjusting rod is located outside the bottom of the base and is fixed with a screw cap.

[0015] Optionally, a fixing plate is fixed to the upper end surface of the upper mold, a fixing edge is fixed around the edge of the lower mold, and screw holes are provided on both the upper mold and the fixing edge, and are fixed with bolts.

[0016] Optionally, an ejection hole is provided on the inner bottom surface of the lower mold, and the diameter of the ejector column is matched with the inner diameter of the ejection hole.

[0017] Optionally, the top of the top column is horizontal and flush with the inner bottom surface of the lower mold.

[0018] Optionally, the bottom thread of the top column is installed in the middle of the upper end surface of the movable plate.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] In the above scheme, thanks to the cooperation of the lifting plate, fixed groove, movable plate, follower column and ejector column, after the lifting plate drives the upper mold and the lower mold to cooperate to complete the silicon carbide ceramic tablet pressing, during the process of rising and resetting, it can magnetically drive the movable plate to move up, so that the ejector column can eject the pressed silicon nitride ceramic sheet from the bottom of the lower mold, thereby achieving rapid demolding.

[0021] At the same time, thanks to the coordination of the dust suction channel, air vents, and dust suction holes inside the top column, as well as the setting of the dust suction air pump, after the top column is extended into the lower mold to eject the silicon nitride ceramic sheet, the dust suction air pump, fixed grooves, air vents, dust suction channel and dust suction holes can be used to form a dust suction air duct to suck away the pressed tablet residues in the lower mold to complete the cleaning.

[0022] In summary, the device forms a linkage with the tablet pressing action, ejector demoulding and dust suction cleaning, which not only facilitates the quick removal of the pressed silicon nitride ceramic sheet, but also facilitates the thorough removal of the mold debris, which is beneficial to ensure the subsequent tablet pressing quality and has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the movable plate of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the top column of the present invention;

[0028] Figure 5 It is a structural schematic diagram of the adjustment rod of the present invention;

[0029] Figure 6 It is a schematic structural diagram of the upper and lower molds of the present invention.

[0030] [reference numerals]

[0031] 1. Base; 2. Guide column; 3. Top plate; 4. Cylinder; 5. Lifting plate; 6. Fixed groove; 7. Dust suction air pump; 8. Lower mold; 801. Fixed edge; 802. Ejection hole; 9. Upper mold; 901. Fixed plate; 10. Movable plate; 1001. Follow-up column; 1002. Magnetic block; 11. Top column; 12. Dust suction channel; 13. Vent hole; 14. Dust suction hole; 15. Adjustment rod; 16. Support plate.

[0032] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0033] The following is a detailed description of a silicon nitride ceramic body pressing device provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for a more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0034] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when a specific feature, structure or characteristic is described in conjunction with an embodiment, it should be within the knowledge of a person skilled in the art to implement such feature, structure or characteristic in conjunction with other embodiments (whether or not explicitly described).

[0035] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0036] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0037] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0038] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a silicon nitride ceramic body pressing device, including a base 1, four guide pillars 2 are evenly fixed on the edge of the upper end surface of the base 1, a horizontal top plate 3 is commonly fixed on the top of the four guide pillars 2, a cylinder 4 is fixed to the middle of the upper end surface of the top plate 3, the shaft of the cylinder 4 vertically passes through the bottom of the top plate 3, and a horizontal lifting plate 5 is fixed, and the edge of the lifting plate 5 is provided with a through hole for the guide pillars 2 to vertically pass through, and the lifting plate 5 moves up and down along the four guide pillars 2, so that the cylinder 4 can drive the lifting plate 5 to move vertically above the base 1.

[0039] Cooperate Figure 6 As shown, an upper mold 9 is fixed to the lower end surface of the lifting plate 5, a fixing groove 6 is provided on the upper end surface of the base 1, and a lower mold 8 is fixed in the upper end of the fixing groove 6. Specifically, a fixing plate 901 is fixed to the upper end surface of the upper mold 9, a fixing edge 801 is fixed around the edge of the lower mold 8, and screw holes are provided on the upper mold 9 and the fixing edge 801, and are fixed with bolts.

[0040] At the same time, cooperate Figure 3 As shown, a movable plate 10 which can be moved up and down is provided at the bottom of the fixed groove 6, and follower columns 1001 are fixed at both ends of the movable plate 10, and a magnetic block 1002 is fixed at the top of the follower column 1001. The magnetic block 1002 is magnetically matched with the lower end surface of the lifting plate 5, and in a normal state, the magnetic block 1002 at the top of the follower column 1001 is exactly horizontal with the upper end surface of the base 1. Only when the lifting plate 5 is in close contact with the upper end surface of the base 1 during stamping, the follower column 1001 will be magnetically connected with the lifting plate 5 through the magnetic block 1002, so as to complete the subsequent auxiliary demolding effect.

[0041] like Figure 3 , Figure 4 As shown, a top column 11 is installed in the middle of the movable plate 10. Specifically, a thread is provided at the bottom of the top column 11, and it is plugged and installed in the middle of the upper end surface of the movable plate 10, so that the height of the top column 11 on the movable plate 10 can be adjusted according to needs.

[0042] The top column 11 vertically penetrates into the bottom of the lower mold 8, and a dust suction channel 12 is opened in the top column 11. A vent hole 13 is opened on the bottom side of the dust suction channel 12, and a dust suction hole 14 is opened on the top side of the dust suction channel 12. A dust suction air pump 7 is installed on the outer side of the base 1, and the dust suction air pump 7 is connected to the fixed groove 6.

[0043] The dust suction air pump 7 is also equipped with a dust suction mechanism, which can be implemented by a dust collector structure. Specifically, an ejection hole 802 is provided on the inner bottom surface of the lower mold 8, and the diameter of the ejector column 11 is adapted to the inner diameter of the ejection hole 802. In addition, in this embodiment, the top of the ejector column 11 is horizontal and flush with the inner bottom surface of the lower mold 8, so that the top of the ejector column 11 ensures the horizontal state of the bottom surface of the lower mold 8.

[0044] like Figure 5As shown, an adjustment rod 15 for supporting the movable plate 10 is vertically inserted into the bottom of the base 1. The top end of the adjustment rod 15 is threadedly inserted into the fixing groove 6, and a support plate 16 is rotatably installed, and the support plate 16 abuts against the lower end surface of the movable plate 10, and the bottom end of the adjustment rod 15 is located outside the bottom of the base 1 and is fixed with a screw cap.

[0045] Therefore, the movable plate 10 can be abutted by the support plate 16 at the top of the adjusting rod 15, so that the top ends of the follower columns 1001 at both ends of the movable plate 10 can extend to the upper end surface of the base 1, so that the magnetic block 1002 can be flush with the upper end surface of the base 1. At the same time, by adjusting the length of the top column 11 in the middle of the movable plate 10, it is convenient to ensure that the top end of the top column 11 is flush with the inner bottom surface of the lower mold 8 at the same time.

[0046] According to the working principle of the present invention, the silicon nitride ceramic body pressing device can fill the silicon nitride ceramic raw material into the lower mold 8 when in use, and then start the cylinder 4 to drive the upper mold 9 on the lower end surface of the lifting plate 5 to punch into the lower mold 8, so as to form a silicon nitride ceramic sheet product under a certain pressure.

[0047] Subsequently, the air cylinder 4 is controlled to drive the lifting plate 5 to drive the upper mold 9 to rise and reset. At this time, the lower end surface of the lifting plate 5 is magnetically connected to the follower column 1001 through the magnetic block 1002, so that the movable plate 10 as a whole will move up with the rise of the lifting plate 5, and then the ejector column 11 installed in the middle of the movable plate 10 will rise from the lower mold 8, and the silicon nitride ceramic sheet pressed in the lower mold 8 will be ejected to achieve rapid demolding.

[0048] At the same time, through the cooperation of the dust suction channel 12, the air vent 13, and the dust suction hole 14 inside the top column 11, and the dust suction air pump 7 arranged on the side of the base 1, after the top column 11 is extended into the lower mold 8 to eject the silicon nitride ceramic sheet, the dust suction air pump 7, the fixed groove 6, the air vent 13, the dust suction channel 12 and the dust suction hole 14 can be used to form a dust suction air duct to suck away the pressed tablet residues in the lower mold 8 to complete the cleaning.

[0049] When the lifting plate 5 continues to move up to a certain height, due to the limitation of the movable plate 10 in the fixed groove 6, the magnetic block 1002 at the top of the follower column 1001 will be separated from the lifting plate 5, and the movable plate 10 will automatically reset under the action of gravity to facilitate the continuous tableting production of subsequent products.

[0050] In summary, the device forms a linkage with the tablet pressing action, ejector demoulding and dust suction cleaning, which not only facilitates the quick removal of the pressed silicon nitride ceramic sheet, but also facilitates the thorough removal of the mold debris, which is beneficial to ensure the subsequent tablet pressing quality and has a good use effect.

[0051] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tablet pressing device for a silicon nitride ceramic body, comprising a base (1), characterized in that: A top plate (3) is mounted on the base (1), a cylinder (4) is fixed on the top plate (3), a shaft of the cylinder (4) vertically passes through the bottom of the top plate (3), a lifting plate (5) is fixed, and an upper mold (9) is fixed to the lower end surface of the lifting plate (5), a fixing groove (6) is formed on the upper end surface of the base (1), and a lower mold (8) is fixed in the upper end of the fixing groove (6); A movable plate (10) that can move up and down is arranged at the bottom of the fixed groove (6), follower columns (1001) are fixed at both ends of the movable plate (10), a magnetic block (1002) is fixed at the top of the follower column (1001), and the magnetic block (1002) is magnetically matched with the lower end surface of the lifting plate (5); A top column (11) is installed in the middle of the movable plate (10), and the top column (11) vertically penetrates into the bottom of the lower mold (8). A dust suction channel (12) is opened in the top column (11), and a vent hole (13) is opened on the bottom side of the dust suction channel (12). A dust suction hole (14) is opened on the top side of the dust suction channel (12), and a dust suction air pump (7) is installed on the outer side of the base (1), and the dust suction air pump (7) is connected to the fixed groove (6).

2. The tablet pressing device for silicon nitride ceramic body according to claim 1, characterized in that: A plurality of guide pillars (2) are fixed to the edge of the upper end surface of the base (1), and the top plate (3) is fixed to the top of the plurality of guide pillars (2).

3. The tablet pressing device for silicon nitride ceramic body according to claim 2, characterized in that: The edge of the lifting plate (5) is provided with a through hole for the guide column (2) to vertically pass through.

4. The tablet pressing device for silicon nitride ceramic body according to claim 1, characterized in that: An adjusting rod (15) for supporting the movable plate (10) is vertically inserted into the bottom of the base (1).

5. The tablet pressing device for silicon nitride ceramic body according to claim 4, characterized in that: The top end of the adjusting rod (15) is threadedly inserted into the fixing groove (6) and is rotatably mounted with a supporting plate (16), which abuts against the lower end surface of the movable plate (10).

6. The tablet pressing device for silicon nitride ceramic body according to claim 5, characterized in that: The bottom end of the adjusting rod (15) is located outside the bottom of the base (1) and is fixed with a screw cap.

7. The tablet pressing device for silicon nitride ceramic body according to claim 1, characterized in that: A fixing plate (901) is fixed to the upper end surface of the upper mold (9), and a fixing edge (801) is fixed around the edge of the lower mold (8). Screw holes are provided on both the upper mold (9) and the fixing edge (801) and are fixed with bolts.

8. The tablet pressing device for silicon nitride ceramic body according to claim 1, characterized in that: An ejection hole (802) is provided on the inner bottom surface of the lower mold (8), and the diameter of the ejection column (11) is adapted to the inner diameter of the ejection hole (802).

9. The tablet pressing device for silicon nitride ceramic body according to claim 1, characterized in that: The top of the top column (11) is horizontal and flush with the inner bottom surface of the lower mold (8).

10. The tablet pressing device for silicon nitride ceramic body according to claim 1, characterized in that: The bottom of the top column (11) is threadedly plugged and installed in the middle of the upper end surface of the movable plate (10).

Images