Base plate for preventing ceramic sintering cracking

Abstract

The utility model relates to the field of ceramic sintering, and discloses a backing plate for preventing ceramic sintering cracking, which comprises a first setter plate, the left side of the first setter plate is hinged with a first cover plate, the top end of the first cover plate is provided with a limit hole in a penetrating manner, the top end of the first setter plate is provided with a mounting hole, and the inner wall of the mounting hole is rotatably connected with a first ball. And a fixing assembly is arranged at the bottom end of the right side of the first cover plate and comprises a sliding rail, the top end of the sliding rail is fixedly connected to the bottom end of the first cover plate, and a sliding block is slidably connected to the outer side of the sliding rail. According to the utility model, through the cooperative use of the first setter plate, the first cover plate and the first balls, in the ceramic sintering process, a sample can slide or contract on the first balls on the first setter plate, the phenomenon of transverse and longitudinal cracking is avoided, the qualified rate of the sintered sample is improved, and the cost problem caused by the yield of the sintering process of an enterprise is reduced.

Description

Technical Field

[0001] This utility model relates to the field of ceramic sintering, and in particular to a pad for preventing cracking during ceramic sintering. Background Technology

[0002] With the continuous development of technology, the application of large-size advanced ceramics is becoming more and more widespread. However, large-size ceramic parts may crack during the sintering process, which restricts their widespread application.

[0003] During the ceramic sintering process, the ceramic blank is placed directly on the pad. Due to the lack of effective support and restraint measures, the ceramic is prone to cracking at high temperatures due to uneven shrinkage.

[0004] During the ceramic sintering process, ceramic parts typically undergo 20%–30% linear shrinkage. For large-sized samples, this large-scale shrinkage process leads to significant friction between the sample and the sintering plate, resulting in cracks perpendicular to the shrinkage direction. This reduces the pass rate of sintered samples and increases costs for enterprises during the sintering process. To address this issue, a pad is proposed to prevent cracking during ceramic sintering. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a pad for preventing cracking during ceramic sintering, aiming to improve the problem in the prior art that "the large-scale shrinkage process leads to greater friction between the sample and the firing plate, thereby reducing the sample qualification rate".

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a pad for preventing cracking during ceramic sintering, comprising a firing plate, a cover plate hinged to the left side of the firing plate, a limiting hole extending through the top of the cover plate, an installation hole at the top of the firing plate, a ball bearing rotatably connected to the inner wall of the installation hole, the ball bearing rotating on the lower inner wall of the limiting hole, a fixing component provided at the bottom right side of the cover plate, the fixing component including a slide rail, the top of the slide rail fixedly connected to the bottom of the cover plate, a slider slidably connected to the outer side of the slide rail, a threaded rod threadedly connected to the lower inner wall of the slider, and a limiting plate rotatably connected to the lower outer side of the threaded rod.

[0007] As a further description of the above technical solution:

[0008] The top of the limiting plate is attached to the inner side of the firing plate, and the top of the limiting plate is provided with an anti-slip strip.

[0009] As a further description of the above technical solution:

[0010] The bearing plate has an anti-slip groove near the limiting plate, and the anti-slip strip is inserted into the inner wall of the anti-slip groove.

[0011] As a further description of the above technical solution:

[0012] Multiple sets of limiting holes and mounting holes are provided, and the rectangular array of limiting holes and mounting holes is arranged on the first bearing plate and the first cover plate.

[0013] As a further description of the above technical solution:

[0014] The limiting holes are provided in multiple sets, and the ball bearing is made of aluminum oxide.

[0015] As a further description of the above technical solution:

[0016] The first firing plate and the first cover plate are made of alumina.

[0017] As a further description of the above technical solution:

[0018] The fixing component is made of a high-temperature resistant material.

[0019] As a further description of the above technical solution:

[0020] A crank handle is provided at the bottom end of the threaded rod.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by using the firing plate, the cover plate, and the ball bearings in combination, the sample can slide or shrink on the ball bearings on the firing plate during the ceramic sintering process, avoiding transverse and longitudinal cracking, improving the pass rate of sintered samples, and reducing the cost problem caused by the low pass rate of the sintering process.

[0023] 2. In this utility model, by using the firing plate, the cover plate and the fixing components together, when the ball bearing needs to be replaced after a long period of use, the limiting plate is released from the pressure on the firing plate by rotating the threaded rod, thereby quickly releasing the limiting on the cover plate. At this time, the cover plate can be opened to replace the ball bearing, which improves the efficiency of the device. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0025] Figure 2 This is a schematic diagram of the unfolded three-dimensional structure of the overall device in this utility model;

[0026] Figure 3 This is a three-dimensional structural diagram of the disassembled fixing component in this utility model;

[0027] Figure 4This is a three-dimensional structural diagram of the slider and the limiting plate in this utility model;

[0028] Figure 5 This is a three-dimensional structural diagram of the overall device in Embodiment 2 of this utility model;

[0029] Figure 6 This is a schematic diagram of the unfolded three-dimensional structure of the overall device in Embodiment 2 of this utility model;

[0030] Figure 7 This is a three-dimensional structural diagram of the overall device in Embodiment 3 of this utility model;

[0031] Figure 8 This is a schematic diagram of the unfolded three-dimensional structure of the overall device in Embodiment 3 of this utility model;

[0032] Figure 9 This is a three-dimensional structural diagram of the overall device in Embodiment 4 of this utility model;

[0033] Figure 10 This is a schematic diagram of the unfolded three-dimensional structure of the overall device in Embodiment 4 of this utility model.

[0034] Legend:

[0035] 1. Firing plate one; 2. Cover plate one; 3. Ball bearing one; 4. Limiting hole; 41. Slide rail; 42. Slider; 43. Threaded rod; 44. Limiting plate; 5. Mounting hole; 61. Firing plate two; 62. Cover plate two; 63. Ball bearing two; 71. Firing plate three; 72. Cover plate three; 73. Roller one; 81. Firing plate four; 82. Cover plate four; 83. Roller two. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Reference Figure 1 - Figure 3This utility model provides an embodiment of a pad for preventing cracking during ceramic sintering, comprising a sintering plate 1, which serves as the main load-bearing part of the pad and cooperates with a cover plate 2 to provide a support platform for ceramic sintering, enabling the sintering of large-sized square plates. The cover plate 2 is hinged to the left side of the sintering plate 1 to limit and fix the ball bearings 3, and to facilitate the replacement and maintenance of the ball bearings 3. A limiting hole 4 is provided through the top of the cover plate 2, and an installation hole 5 is provided at the top of the sintering plate 1 to provide an installation position for the ball bearings 3. Cooperating with the limiting hole 4 on the cover plate 2, the ball bearings 3 provide support and limit when the cover plate 2 is closed. The ball bearings 3 are rotatably connected to the inner wall of the installation hole 5, which provides rolling support, reduces sample friction, and allows the sample to slide and shrink on the ball bearings 3, avoiding transverse and longitudinal cracking and improving the yield of sintered samples. The ball bearings 3 rotate on the inner wall below the limiting hole 4, and a fixing component is provided at the bottom right side of the cover plate 2.

[0038] Furthermore, the fixing component includes a slide rail 41, which provides a sliding track for the slider 42, allowing the slider 42 to move on the slide rail 41. The top of the slide rail 41 is fixedly connected to the bottom of the cover plate 2. The slider 42 is slidably connected to the outside of the slide rail 41, which can drive the threaded rod 43 and the limiting plate 44 to move and adjust their positions. The threaded rod 43 is threadedly connected to the inner wall of the lower side of the slider 42. By rotating the threaded rod 43, the limiting plate 44 can be moved up and down. A crank is provided at the bottom of the threaded rod 43, which is convenient for the operator to rotate. The lower outer side of the threaded rod 43 is rotatably connected to the limiting plate 44. When it moves upward, it cooperates with the firing plate 1 to quickly fix the cover plate 2.

[0039] Reference Figure 2 - Figure 4 The top of the limiting plate 44 is attached to the inner side of the firing plate 1. An anti-slip strip is provided on the top of the limiting plate 44 to increase friction with the firing plate 1 and improve stability. An anti-slip groove is provided on the firing plate 1 near the limiting plate 44, which works in conjunction with the anti-slip strip to further enhance the fixing effect. The anti-slip strip is inserted into the inner wall of the anti-slip groove. Multiple sets of limiting holes 4 and mounting holes 5 are provided, arranged in a rectangular array on the firing plate 1 and the cover plate 2. This increases the number of support points and limiting points, making the connection between the cover plate 2 and the firing plate 1 more stable and uniform when closed, and better preventing ceramic from slacking during firing. Cracking may occur due to uneven stress during the sintering process. Multiple sets of ball bearings 3 are provided. Ball bearings 3 are made of alumina and have a diameter of 3mm (including but not limited to diameter and thickness of 3mm). Their materials (including but not limited to alumina ball bearings, zirconia ball bearings, and mullite ball bearings) are used. The firing plate 1 and the cover plate 2 are made of alumina and have a combined thickness of 5mm (including but not limited to thickness of 5mm). They are high temperature resistant and suitable for the high temperature environment of ceramic sintering. The fixing components are made of high temperature resistant materials to ensure that they will not deform or be damaged during high temperature sintering and to guarantee the reliability of the fixing.

[0040] Example 2:

[0041] Reference Figure 5 - Figure 6 The difference between Embodiment 2 and Embodiment 1 of this utility model lies in Embodiment 2.

[0042] The use of firing plate 261, cover plate 262, and ball bearing 263 to replace firing plate 1, cover plate 2, and ball bearing 3 enables sintering of large-sized circular plates.

[0043] Example 3:

[0044] Reference Figure 7 - Figure 8 The difference between Embodiment 3 and Embodiment 1 is that in Embodiment 3, a firing plate 3 71, a cover plate 3 72 and a roller 73 are used to replace the firing plate 1, the cover plate 2 and the ball bearing 3 set in the middle of the firing plate 1 and the cover plate 2. The roller 73 is an alumina roller with a diameter of 3mm and a thickness of 3mm, which can be used for sintering irregularly shaped plates.

[0045] Example 4:

[0046] Reference Figure 9 - Figure 10 The difference between Embodiment 4 and Embodiment 1 is that in Embodiment 4, a firing plate 4 81, a cover plate 4 82 and a roller 2 83 are used to replace the firing plate 1, cover plate 2 and ball 3. The roller 2 83 is an alumina roller with a diameter of 3mm and a thickness of 3mm, which can be used for sintering ultra-long plates or cylindrical plates.

[0047] Working principle: When ceramic samples need to be sintered, the ceramic is placed on multiple sets of rollers 3. During the sintering of the ceramic, the horizontal and vertical shrinkage of the ceramic is too large, so the sample can slide or shrink on the rollers 3, avoiding horizontal and vertical cracking.

[0048] When it is necessary to maintain or replace ball bearing 3, first turn the crank handle to drive the threaded rod 43 to rotate, so that the threaded rod 43 rotates downward on the inner wall of the slider 42, causing the limiting plate 44 to move downward, so that the anti-slip strip on the limiting plate 44 slides out from the inner wall of the anti-slip groove opened on the firing plate 1, releasing the restriction on the cover plate 2. At this time, pull the crank handle to the right to drive the slider 42 to slide on the slide rail 41, so that the limiting plate 44 moves out from under the firing plate 1. Then the cover plate 2 can be rotated to release the restriction on ball bearing 3, so that ball bearing 3 can be maintained or replaced, improving the maintenance efficiency of the device.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pad for preventing cracking during ceramic sintering, comprising a firing support plate (1), characterized in that: The firing plate (1) is hinged to the left side of the cover plate (2). The top of the cover plate (2) has a limiting hole (4) through it. The top of the firing plate (1) has an installation hole (5). The inner wall of the installation hole (5) is rotatably connected to a ball bearing (3). The ball bearing (3) rotates on the inner wall below the limiting hole (4). The bottom right side of the cover plate (2) is provided with a fixing component. The fixing component includes a slide rail (41). The top of the slide rail (41) is fixedly connected to the bottom of the cover plate (2). The outer side of the slide rail (41) is slidably connected to a slider (42). The inner wall of the lower side of the slider (42) is threadedly connected to a threaded rod (43). The lower outer side of the threaded rod (43) is rotatably connected to a limiting plate (44).

2. The pad for preventing cracking during ceramic sintering according to claim 1, characterized in that: The top of the limiting plate (44) is attached to the inner side of the firing plate (1), and the top of the limiting plate (44) is provided with an anti-slip strip.

3. A pad for preventing cracking during ceramic sintering according to claim 2, characterized in that: The bearing plate (1) has an anti-slip groove near the limiting plate (44), and the anti-slip strip is inserted into the inner wall of the anti-slip groove.

4. A pad for preventing cracking during ceramic sintering according to claim 1, characterized in that: Multiple sets of limiting holes (4) and mounting holes (5) are provided, and the rectangular array of limiting holes (4) and mounting holes (5) is arranged on the first bearing plate (1) and the first cover plate (2).

5. A pad for preventing cracking during ceramic sintering according to claim 1, characterized in that: The limiting hole (4) is provided in multiple sets, and the ball bearing (3) is made of alumina.

6. A pad for preventing cracking during ceramic sintering according to claim 1, characterized in that: The firing plate (1) and the cover plate (2) are made of alumina.

7. A pad for preventing cracking during ceramic sintering according to claim 1, characterized in that: The fixing component is made of a high-temperature resistant material.

8. A pad for preventing cracking during ceramic sintering according to claim 1, characterized in that: A crank handle is provided at the bottom end of the threaded rod (43).

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