Polishing device for silicon nitride ceramic material production

Abstract

The invention provides a polishing device for silicon nitride ceramic material production, and belongs to the technical field of silicon carbide ceramic body production. Comprising a workbench, a fixing frame is erected on the workbench, a hydraulic air cylinder is fixed to the top of the fixing frame, a crankshaft of the hydraulic air cylinder vertically penetrates out of the lower portion of the top of the fixing frame and is fixedly provided with a horizontal movable plate, a sealing cover is elastically installed on the lower end face of the movable plate, and a grinding mechanism is installed at the bottom in the sealing cover; a fixing table is arranged at the position, corresponding to the sealing cover, of the middle of the upper end face of the workbench, two clamping blocks capable of moving in a mirror image mode to clamp the silicon nitride ceramic body are symmetrically arranged in the middle of the fixing table, a dust collection mechanism is arranged in the workbench, and a vertical pressing column is fixed to the edge of the sealing cover. In the process of polishing a silicon nitride ceramic body material, the sealing cover covers the fixing table to form sealing, and the pressing column is matched to be in linkage with the dust collection mechanism in the workbench, so that dust in the sealing cover is collected and recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of silicon carbide ceramic body production, and particularly relates to a grinding device for producing silicon nitride ceramic materials. Background Art

[0002] Silicon carbide ceramic body (SiC ceramic) is a high-performance structural ceramic material, which is widely used in multiple industrial fields due to its excellent physical, chemical, and mechanical properties.

[0003] However, when the existing silicon carbide ceramic body materials are ground using a grinding wheel, a large amount of dust will be generated, and the dust will be released into the air. The dust contains tiny silicon carbide particles, and long-term inhalation may lead to abnormal respiratory system function, causing symptoms such as coughing, chest tightness, and shortness of breath, and may even cause occupational diseases such as pneumoconiosis, which is not conducive to the respiratory health of the staff.

[0004] Therefore, the present application provides a grinding device for producing silicon nitride ceramic materials 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 grinding device for producing silicon nitride ceramic materials to solve the problem in the prior art that when silicon nitride ceramic body materials are ground, a large amount of dust is generated, which affects the respiratory health of the staff. [[ID=2L]]

[0006] To solve the above technical problem, the present invention provides the following technical solutions:

[0007] A grinding device for producing silicon nitride ceramic materials, including a workbench, a fixed frame is erected on the workbench, a hydraulic cylinder is fixed on the top of the fixed frame, the machine shaft of the hydraulic cylinder vertically penetrates below the top of the fixed frame and is fixed with a horizontal movable plate, a sealing cover is elastically installed on the lower end surface of the movable plate, and a grinding mechanism is installed at the bottom inside the sealing cover;

[0008] In the middle of the upper end surface of the workbench, a fixed table is arranged corresponding to the position of the sealing cover. Two clamping blocks that can mirror and move to clamp the silicon nitride ceramic body are symmetrically arranged in the middle of the fixed table, and a dust suction mechanism is arranged inside the workbench. A vertical pressing column is fixed on the edge of the sealing cover, and when the sealing cover covers the fixed table, the pressing column is inserted into the workbench to turn on the dust suction mechanism.

[0009] Optionally, a vertical movable shaft is fixed in the middle of the upper end surface of the sealing cover, and the movable shaft is vertically inserted into the movable plate to form a plug-in installation.

[0010] Optionally, a spring is fixed on the upper end surface of the sealing cover, and the top end of the spring is fixed to the lower end surface of the movable plate and elastically presses the sealing cover downward.

[0011] Optionally, a plurality of dust suction holes are provided on the fixed platform, and a dust collecting groove connecting the dust suction holes and the dust suction mechanism is provided on the top of the workbench.

[0012] Optionally, a horizontal through groove is provided in the middle of the upper end surface of the fixing platform, the through groove is connected to the dust collecting groove, and a driving rod passes through the bottoms of the two clamping blocks.

[0013] Optionally, the driving rod is symmetrically structured with two opposite threaded sections, which are threaded through the two clamping blocks respectively.

[0014] Optionally, one end of the driving rod passes through the outside of the fixing platform and is fixed with a screw cap.

[0015] Optionally, the grinding mechanism includes a servo motor, the servo motor is fixed to the top of the sealing cover, and a diamond grinding wheel is fixed to the shaft of the servo motor.

[0016] Optionally, the dust suction mechanism includes a dust collecting hopper horizontally plugged into the middle of the workbench, a filter core layer is provided at the bottom of the dust collecting hopper, and an installation cavity is installed at the bottom of the workbench, the installation cavity is connected to the filter core layer, and an air pump is installed in the installation cavity.

[0017] Optionally, a control button for controlling the air pump is provided in the workbench, and the pressing column is vertically inserted into the workbench and abuts against the control button to form control.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] In the above solution, thanks to the cooperation of the clamping block and the driving rod, silicon nitride ceramic materials of various specifications can be clamped and fixed, and the solution has strong versatility.

[0020] At the same time, thanks to the cooperation of the workbench, hydraulic cylinder, movable plate, sealing cover and fixed table, the hydraulic cylinder can drive the movable plate to drive the sealing cover down to seal the fixed table, and then use the grinding mechanism on the top of the sealing cover to grind the carbon nitride ceramic material. The pressing column at the lower end of the sealing cover will be inserted into the workbench and linked to control the dust collection mechanism in the workbench to absorb the grinding dust in the sealing cover, which can then be collected by a dust collection bucket for recycling.

[0021] In summary, during the process of polishing silicon nitride ceramic materials, the device can cover the fixed platform with a sealing cover to form a seal, and cooperate with the dust collection mechanism in the pressing column linkage workbench to collect and recycle the dust in the sealing cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present invention and, together with the specification, are further used to explain the principles of the present invention and enable those skilled in the relevant art to implement and use the present invention.

[0023] Figure 1 It is a schematic structural diagram of the present invention;

[0024] Figure 2 It is a schematic internal structural diagram of the present invention;

[0025] Figure 3 It is a schematic structural diagram of the clamping block;

[0026] Figure 4 It is a schematic structural diagram of the sealing cover;

[0027] Figure 5 It is a schematic structural diagram of the dust collection drawer;

[0028] Figure 6 is Figure 2 an enlarged schematic diagram of the structure at position A in

[0029] [Reference numerals]

[0030] 1, workbench; 2, fixing frame; 3, hydraulic cylinder; 4, movable plate; 5, sealing cover; 501, movable shaft; 502, spring; 503, pressing column; 6, servo motor; 601, diamond grinding wheel; 7, fixing table; 701, dust suction hole; 702, clamping block; 703, driving rod; 8, dust collecting groove; 9, dust collection drawer; 901, filter core layer; 10, installation cavity; 11, air pump; 12, control button.

[0031] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure, but this is only for schematic needs and is not intended to limit the present invention to this specific structure, device and environment. Those of ordinary skill in the art can adjust or modify these devices and environments according to specific needs. Detailed implementation manners

[0032] The following describes in detail a grinding device for producing silicon nitride ceramic materials provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted 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 can also implement them in other alternative ways for some well-known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0033] It should be noted that in the specification, terms such as "an embodiment", "embodiment", "exemplary embodiment", "some embodiments", etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when describing a specific feature, structure, or characteristic in combination with an embodiment, implementing such a feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0034] Generally, terms can be understood at least in part from their use in the context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood to not necessarily be intended to convey a set of exclusive factors, but rather, at least in part depending on the context, to allow for the existence of other factors that may not be explicitly described.

[0035] It can be understood that the meanings of "on", "above", and "over" in the present invention should be interpreted in the broadest manner such that "on" not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above" or "over" not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0036] Furthermore, spatial relative terms such as "under", "below", "lower", "above", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or other elements or features, as shown in the drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptors used herein can be interpreted correspondingly.

[0037] Such as Figures 1-6As shown in the figure, an embodiment of the present invention provides a grinding device for producing silicon nitride ceramic materials, including a workbench 1, on which a fixing frame 2 is erected. A hydraulic cylinder 3 is fixed on the top of the fixing frame 2. The shaft of the hydraulic cylinder 3 vertically penetrates below the top of the fixing frame 2 and is fixed with a horizontal movable plate 4. The lower end surface of the movable plate 4 is elastically installed with a sealing cover 5. A grinding mechanism is installed at the bottom of the sealing cover 5. The grinding mechanism includes a servo motor 6, which is fixed to the inner top of the sealing cover 5, and a diamond grinding wheel 601 is fixed to the shaft of the servo motor 6. In this embodiment, the workbench 1 is cast from high-strength cast iron, and the surface of the workbench is precision ground to form a flat reference surface. The table size is 1500×800×200mm. The fixing frame 2 is an inverted L-shaped steel bracket structure, and the bottom of its column is fixed to the workbench 1 through flange bolts. A φ80mm through hole is reserved at the center of its top for the shaft of the hydraulic cylinder 3 to pass through. The hydraulic cylinder is selected from the HSG series engineering oil cylinders, with a cylinder diameter of 80mm, a stroke of 300mm, and a maximum thrust of 12 tons. A 6MPa power source is provided by a hydraulic station. At the same time, the servo motor 6 is selected as a 400W AC servo motor with a rated speed of 3000rpm, and is connected to the φ150mm diamond grinding wheel 601 through an elastic coupling. An adjustable protective cover is arranged around the diamond grinding wheel 601, and a labyrinth seal structure is built-in. The grinding pressure is precisely controlled by the hydraulic system. The pressure sensor monitors and feeds back to the PLC in real time. The pressure adjustment range is 50 - 500N, and the accuracy is ±2%.

[0038] In addition, a vertical movable shaft 501 is fixed in the middle of the upper end surface of the sealing cover 5. The movable shaft 501 is vertically inserted into the movable plate 4 to form a plug-in installation. And a spring 502 is fixed to the upper end surface of the sealing cover 5. The top of the spring 502 is fixed to the lower end surface of the movable plate 4, and elastically presses the sealing cover 5 downward to form the elastic installation of the sealing cover 5. In this embodiment, the movable plate 4 is a 20mm thick Q235 steel plate, and an annular positioning groove is processed on the lower end surface. The sealing cover 5 is made of polyurethane elastomer, and an M20 threaded movable shaft 501 is welded at the center of the top. Axial positioning is achieved by vertically inserting it into the positioning groove of the movable plate 4. The free length of the spring 502 is 120mm, the wire diameter is 6mm, the stiffness coefficient is 50N / mm, and the pre-compression amount is 20mm, forming an elastic buffer system. Double-layer silicone sealing lips are arranged at the bottom of the sealing cover 5, and a 3mm compression amount can be formed when contacting the fixed table 7.

[0039] In other embodiments, a temperature and humidity sensor and a dust concentration monitor can also be installed inside the sealing cover 5. The hydraulic system is equipped with an overload protection valve and an emergency stop device. In case of an abnormal situation, the power is automatically cut off and a pneumatic support rod is started to lock the movable plate. Emergency stop buttons and light curtain sensors can also be arranged around the workbench 1, meeting the CE safety standard.

[0040] In the middle of the upper end surface of the workbench 1, a fixing table 7 is provided corresponding to the position of the sealing cover 5. Two clamping blocks 702 capable of mirror-imaging movement to clamp the silicon nitride ceramic body are symmetrically arranged in the middle of the fixing table 7. A dust suction mechanism is arranged in the workbench 1. A vertical pressing column 503 is fixed at the edge of the sealing cover 5. When the sealing cover 5 covers the fixing table 7, the pressing column 503 is inserted into the workbench 1 and the dust suction mechanism is started.

[0041] Specifically, a plurality of dust suction holes 701 are formed in the fixing table 7, and a dust collecting groove 8 communicating the dust suction holes 701 with the dust suction mechanism is formed at the top of the workbench 1. The dust suction mechanism includes a dust collecting and pumping hopper 9 horizontally inserted and installed in the middle of the workbench 1. A filter core layer 901 is arranged at the bottom of the dust collecting and pumping hopper 9. An installation cavity 10 is installed at the bottom of the workbench 1. The installation cavity 10 is communicated with the filter core layer 901, and an air pump 11 is installed in the installation cavity 10.

[0042] Meanwhile, a control button 12 for controlling the air pump 11 is arranged in the workbench 1. The pressing column 503 is vertically inserted into the workbench 1 and is in butt joint with the control button 12 to form a control.

[0043] In this embodiment, the dust collecting groove 8 adopts a tapered air duct design, with the inlet width gradually shrinking from 200 mm to 80 mm at the interface of the dust collecting and pumping hopper 9, and the air speed is increased to 15 m / s. The filter core layer 901 is a PTFE film-covered filter cartridge with a filtration accuracy of 0.3 μm and an effective filtration area of 8 m 2 . The air pump 11 adopts a 7.5 kW centrifugal fan with an air volume of 2200 m 3 / h and a static pressure of 2800 Pa. The control button 12 is a waterproof micro switch, which is triggered when the pressing column 503 is pressed down by 5 mm, and the delay relay is set with a 3-second pre-start function.

[0044] As Figure 2 shown in Figure 3 the figure, a horizontal through groove is formed in the middle of the upper end surface of the fixing table 7, and the through groove is communicated with the dust collecting groove 8. A driving rod 703 penetrates through between the bottoms of the two clamping blocks 702. Two opposite threaded sections are symmetrically formed on the driving rod 703 and respectively penetrate through the two clamping blocks 702 in a threaded manner. One end of the driving rod 703 penetrates out of the outside of the fixing table 7 and is fixed with a screwing cap.

[0045] The above solution in this embodiment, through the organic combination of a rigid structural design, an elastic buffer system, and intelligent control, achieves efficient and precise machining of silicon nitride ceramic materials, effectively addressing dust pollution and surface quality issues encountered in machining hard and brittle materials. When the subsystems work together, machining accuracy can reach IT6, with a surface roughness Ra ≤ 0.4μm and a dust collection efficiency ≥ 99.5%.

[0046] The working principle provided by the present invention is that the grinding device for the production of silicon nitride ceramic materials can, when in use, place the silicon nitride ceramic body material to be processed on the upper end surface of the fixed table 7, and then drive the two driving rods 703 to move in a mirrored manner by rotating the clamping block 702 to clamp and fix the silicon nitride ceramic material.

[0047] Subsequently, the hydraulic cylinder 3 can be used to drive the movable plate 4 to drive the sealing cover 5 to descend, covering the fixed platform 7 to form a seal. At this time, the servo motor 6 at the top of the sealing cover 5 can drive the diamond grinding wheel 601 to grind the carbon nitride ceramic material, and the pressing column 503 at the lower end of the sealing cover 5 will be inserted into the workbench 1, and the dust collection mechanism in the workbench 1 will be controlled to absorb the grinding dust in the sealing cover 5, and then the dust collecting bucket 9 can be used to collect it for recycling.

[0048] In summary, during the process of polishing silicon nitride ceramic materials, the device can seal the fixing platform 7 with the sealing cover 5 and cooperate with the dust collection mechanism in the working table 1 to collect and recycle the dust in the sealing cover 5 by means of the pressing column 503 .

[0049] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0050] 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 principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A grinding device for the production of silicon nitride ceramic materials, including a workbench, characterized in that, A fixed frame is erected on the workbench. A hydraulic cylinder is fixed on the top of the fixed frame. The shaft of the hydraulic cylinder vertically penetrates below the top of the fixed frame and is fixed with a horizontal movable plate. A sealing cover is elastically installed on the lower end surface of the movable plate, and a grinding mechanism is installed at the bottom inside the sealing cover. In the middle of the upper end surface of the workbench, a fixed table is arranged corresponding to the position of the sealing cover. Two clamping blocks that can move mirror-symmetrically to clamp the silicon nitride ceramic body are symmetrically arranged in the middle of the fixed table. And a dust suction mechanism is arranged inside the workbench. A vertical pressing column is fixed at the edge of the sealing cover. When the sealing cover covers the fixed table, the pressing column is inserted into the workbench to turn on the dust suction mechanism.

2. The grinding device for producing silicon nitride ceramic materials according to claim 1, characterized in that, A vertical movable shaft is fixed in the middle of the upper end surface of the sealing cover. The movable shaft is vertically inserted into the movable plate to form a plug-in installation.

3. The grinding device for producing silicon nitride ceramic materials according to claim 2, characterized in that, A spring is fixed on the upper end surface of the sealing cover. The top end of the spring is fixed to the lower end surface of the movable plate and elastically presses the sealing cover downward.

4. The grinding device for producing silicon nitride ceramic materials according to claim 1, characterized in that, A plurality of dust suction holes are opened on the fixed table, and a dust collecting groove communicating the dust suction holes with the dust suction mechanism is opened at the top of the workbench.

5. The grinding device for producing silicon nitride ceramic materials according to claim 4, wherein, A horizontal through groove is opened in the middle of the upper end surface of the fixed table. The through groove communicates with the dust collecting groove. A driving rod penetrates through between the bottoms of the two clamping blocks.

6. The grinding device for producing silicon nitride ceramic materials according to claim 5, characterized in that, Two opposite threaded sections are symmetrically formed on the driving rod and respectively thread through the two clamping blocks.

7. The grinding device for producing silicon nitride ceramic materials according to claim 6, characterized in that, One end of the driving rod penetrates out of the outside of the fixed table and is fixed with a screwing cap.

8. The grinding device for producing silicon nitride ceramic materials according to claim 1, characterized in that, The grinding mechanism includes a servo motor. The servo motor is fixed to the top inside the sealing cover, and a diamond grinding wheel is fixed to the shaft of the servo motor.

9. The grinding device for producing silicon nitride ceramic materials according to claim 1, characterized in that, The dust suction mechanism includes a dust collecting and extracting hopper horizontally plug-in installed in the middle inside the workbench. A filter core layer is arranged at the bottom of the dust collecting and extracting hopper. And an installation cavity is installed at the bottom inside the workbench. The installation cavity communicates with the filter core layer, and an air pump is installed in the installation cavity.

10. The grinding device for producing silicon nitride ceramic materials according to claim 9, characterized in that, A control button for controlling the air pump is arranged inside the workbench. And the pressing column is vertically inserted into the workbench and abuts against the control button to form a control.

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