A vacuum negative pressure clamping fixture for yttrium oxide ceramic plates

Abstract

This utility model discloses a vacuum negative pressure clamping fixture for yttrium oxide ceramic plates, comprising: a workpiece positioning base; the top of the workpiece positioning base has multiple rows of storage cavities for storing yttrium oxide ceramic plates from left to right; multiple sets of fixing tubes are installed inside the workpiece positioning base; multiple sets of suction tubes connected to the storage cavities are connected to the fixing tubes. This utility model, by providing storage cavities on the workpiece positioning base, can pre-position the yttrium oxide ceramic plates. Then, a vacuum pump and air guide tubes are used to evacuate the space at the bottom of the yttrium oxide ceramic plates, creating a negative pressure state at the bottom of the yttrium oxide ceramic plates. The vacuum negative pressure holds the yttrium oxide ceramic plates in place within the storage cavities, ensuring the stability of the yttrium oxide ceramic plates. Because air pressure is used for limiting the position, damage caused by hard contact with the yttrium oxide ceramic plates is avoided. Furthermore, the device is directly controlled by a quick-release air valve switch, making operation convenient and fast.

Description

Technical Field

[0001] This utility model relates to the field of ceramic plate processing technology, specifically a vacuum negative pressure clamping fixture for yttrium oxide ceramic plates. Background Technology

[0002] Yttrium oxide ceramic thin plates are advanced ceramic thin plate materials with yttrium trioxide (Y2O3) as the main crystalline phase. They have a series of excellent properties and are used in many fields. When processing yttrium oxide ceramic thin plates, they need to be clamped and fixed to ensure their stability.

[0003] In the process of mass production of yttrium oxide ceramic thin plates, due to the physical properties of the material itself, yttrium oxide ceramic thin plates are prone to breakage. Traditional clamping methods (such as pressure plates or vises) are prone to the following problems: 1. Cumbersome clamping steps; 2. Unstable repeated positioning; 3. Easily scratches, bumps, or cracks the workpiece; 4. Limited production efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a vacuum negative pressure clamping fixture for yttrium oxide ceramic plates. By placing the yttrium oxide ceramic plate in a storage cavity and evacuating the air below from the bottom, the yttrium oxide ceramic plate is stably adsorbed in the storage cavity using vacuum negative pressure. This effectively avoids damage to the yttrium oxide ceramic plate caused by traditional rigid contact clamping fixtures. The rubber sealing ring serves as a seal between the fixture positioning base and the yttrium oxide ceramic plate, protecting the yttrium oxide ceramic plate during placement from impacts and breakage. It also avoids the problem of insufficient sealing caused by uneven bottom of the yttrium oxide ceramic plate, making the clamping of yttrium oxide ceramic plates quick and safe, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vacuum negative pressure clamping fixture for yttrium oxide ceramic plates, comprising: Workpiece positioning base; The top of the workpiece positioning base has multiple rows of storage cavities for storing yttrium oxide ceramic thin plates, arranged from left to right. Multiple sets of fixing tubes are installed inside the workpiece positioning base. Multiple sets of suction tubes that communicate with the storage cavities are connected to the fixing tubes. One end of the fixing tube extends to the outside of the workpiece positioning base and is connected to a gas guide tube. The end of the gas guide tube away from the workpiece positioning base is connected to a vacuum pump. A gas pipe connector and a quick-release gas valve switch are connected to the gas guide tube through a connector assembly.

[0006] Preferably, the bottom of the storage cavity has multiple sets of U-shaped cavities arranged sequentially from the inside to the outside, and the multiple sets of cavities are connected by channels, and the air intake tube is connected to the cavities.

[0007] Preferably, a groove is provided at the bottom of the inner cavity of the storage cavity, the groove is located on the outside of the cavity, and a rubber sealing ring is embedded in the groove.

[0008] Preferably, the connector assembly includes a connector seat fixed to the end of the fixed tube, the air pipe connector, and the quick-connect air valve switch. The air guide tube is sleeved on the outside of the connector seat, and a connector cap is provided on the outside of the connector seat. The connector cap is threadedly connected to the connector seat.

[0009] Preferably, the connector seat includes a straight tube seat that is threadedly connected to the connector cap, the air guide tube is sleeved on one end of the straight tube seat, and multiple sets of compression limiting plates located on the outside of the air guide tube are fixed to the outside of the straight tube seat. The inner cavity of the connector cap is provided with an inclined surface for applying pressure to the compression limiting plates.

[0010] Preferably, a first clearance groove is provided at each of the four corners of the storage cavity, and a second clearance groove is provided at both the front and rear ends of the inner cavity of the storage cavity. The depth of the first clearance groove and the second clearance groove is the same as the depth of the storage cavity.

[0011] Preferably, the rubber sealing ring has a hollow structure, and the thickness of the rubber sealing ring is greater than the depth of the groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a storage cavity on the workpiece positioning base to pre-position a yttrium oxide ceramic sheet. An external vacuum pump and gas pipe then evacuate the space at the bottom of the yttrium oxide ceramic sheet, creating a negative pressure state. This vacuum pressure holds the yttrium oxide ceramic sheet firmly within the storage cavity, ensuring its stability. The use of air pressure for positioning avoids damage caused by hard contact with the yttrium oxide ceramic sheet. Furthermore, the device is directly controlled by a quick-release air valve switch, making operation convenient and fast.

[0013] The present invention provides a first clearance groove to protect the corners of the yttrium oxide ceramic sheet and prevent the corners from colliding with the inner wall of the storage cavity, while the second clearance groove facilitates the removal of the yttrium oxide ceramic sheet from the storage cavity. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the workpiece positioning base of this utility model; Figure 3 This is a cross-sectional three-dimensional structural diagram of the workpiece positioning base of this utility model; Figure 4 This is a three-dimensional structural diagram of the connector assembly of this utility model. Figure 5 This is a cross-sectional three-dimensional structural diagram of the connector assembly of this utility model.

[0015] The following are the labels in the diagram: 1. Workpiece positioning base; 2. Storage cavity; 3. Fixing tube; 4. Suction tube; 5. Air guide tube; 6. Air pipe connector; 7. Quick-release air valve switch; 8. Connector assembly; 81. Connector seat; 811. Straight tube seat; 812. Extrusion limiting plate; 82. Connector cap; 9. Cavity; 10. Channel; 11. Groove; 12. Rubber sealing ring; 13. First clearance groove; 14. Second clearance groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0017] This utility model provides, for example Figures 1-5 The yttrium oxide ceramic plate vacuum negative pressure clamping fixture shown includes: Workpiece positioning base 1; The top of the workpiece positioning base 1 has multiple rows of storage cavities 2 for storing yttrium oxide ceramic thin plates, arranged from left to right. Multiple sets of fixing tubes 3 are installed inside the workpiece positioning base 1. Multiple sets of suction tubes 4 are connected to the fixing tubes 3 and are connected to the storage cavities 2. One end of the fixing tube 3 extends to the outside of the workpiece positioning base 1 and is connected to the air guide tube 5. The end of the air guide tube 5 away from the workpiece positioning base 1 is connected to a vacuum pump. The air guide tube 5 is connected to the air pipe connector 6 and the quick-release air valve switch 7 through the connector assembly 8. By providing a storage cavity 2 on the workpiece positioning base 1, the yttrium oxide ceramic sheet can be pre-positioned. Then, an external vacuum pump and air guide pipe 5 are used to evacuate the space at the bottom of the yttrium oxide ceramic sheet, creating a negative pressure state at the bottom of the sheet. This negative pressure helps to adhere the yttrium oxide ceramic sheet to the storage cavity 2, ensuring its stability. Since air pressure is used for positioning, damage caused by hard contact with the yttrium oxide ceramic sheet is avoided. Furthermore, the device is directly controlled by a quick-operation air valve switch 7, making operation convenient and fast.

[0018] Among them, such as Figure 3 As shown: Multiple sets of U-shaped cavities 9 are sequentially formed from the inside to the outside at the bottom of the inner cavity of the storage chamber 2. These cavities 9 are connected by channels 10. The suction pipe 4 is connected to the cavities 9. By setting multiple sets of cavities 9 at the bottom of the inner cavity of the storage chamber 2 and connecting them through channels 10, the space at the bottom of the yttrium oxide ceramic thin plate is kept in a connected state. This avoids unevenness at the bottom of the yttrium oxide ceramic thin plate, which would divide the bottom space into different areas, resulting in a smaller area connected to the suction pipe 4, affecting the stability of the adsorption of the yttrium oxide ceramic thin plate. At the same time, it maintains support for the yttrium oxide ceramic thin plate and ensures its stability.

[0019] Furthermore, such as Figure 3 As shown: A groove 11 is provided at the bottom of the inner cavity of the storage cavity 2. The groove 11 is located on the outside of the cavity 9. A rubber sealing ring 12 is embedded in the groove 11. The groove 11 facilitates the installation of the rubber sealing ring 12. The rubber sealing ring 12 is deformed under pressure, which better fits the bottom of the yttrium oxide ceramic thin plate and isolates the area inside the rubber sealing ring 12, making it convenient for vacuuming.

[0020] The deformation of the rubber sealing ring 12 cannot completely isolate the cavity 9 from the outside world. Therefore, a vacuum pump is needed to continuously perform vacuuming to maintain the cavity 9 in a negative pressure state in order to ensure the stability of the adsorption of yttrium oxide ceramic thin plate.

[0021] Preferred, such as Figure 4 As shown: The connector assembly 8 includes a connector seat 81 fixed to the ends of the fixed pipe 3, the air pipe connector 6, and the quick-connect air valve switch 7. The air guide pipe 5 is sleeved on the outside of the connector seat 81. A connector cap 82 is provided on the outside of the connector seat 81. The connector cap 82 is threadedly connected to the connector seat 81. Through the threaded connection between the connector seat 81 and the connector cap 82, the air guide pipe 5 is connected to the ends of the fixed pipe 3, the air pipe connector 6, and the quick-connect air valve switch 7 respectively, ensuring the air passage is unobstructed and preventing gas leakage at the connection point, which would affect the negative pressure state.

[0022] It is worth noting that, such as Figure 5 As shown: The connector seat 81 includes a straight tube seat 811 that is threadedly connected to the connector cap 82. The air guide tube 5 is sleeved on one end of the straight tube seat 811. Multiple sets of compression limiting plates 812 located outside the air guide tube 5 are fixed on the outside of the straight tube seat 811. The inner cavity of the connector cap 82 is provided with an inclined surface for applying pressure to the compression limiting plates 812. The straight tube seat 811 facilitates the direct sleeve of the air guide tube 5 onto the straight tube seat 811. Then, the compression limiting plates 812 are pressed through the threaded connection between the connector cap 82 and the straight tube seat 811, so that the compression limiting plates 812 and the straight tube seat 811 clamp the air guide tube 5 and maintain the stability of the connection of the air guide tube 5.

[0023] In a further preferred embodiment, such as Figure 1-3 As shown: The storage cavity 2 has a first clearance groove 13 at each of its four corners, and a second clearance groove 14 at both the front and rear ends of the inner cavity of the storage cavity 2. The depth of the first clearance groove 13 and the second clearance groove 14 is the same as the depth of the storage cavity 2. The first clearance groove 13 is designed to protect the corners of the yttrium oxide ceramic sheet and prevent the corners from colliding with the inner wall of the storage cavity 2. The second clearance groove 14 is designed to facilitate the removal of the yttrium oxide ceramic sheet from the storage cavity 2.

[0024] In addition, such as Figure 3 As shown: The rubber sealing ring 12 has a hollow structure, and the thickness of the rubber sealing ring 12 is greater than the depth of the groove 11. By limiting the structure of the rubber sealing ring 12, the hollow structure can make the rubber sealing ring 12 more elastic and easier to deform, so that the rubber sealing ring 12 can fit with the uneven yttrium oxide ceramic thin plate at the bottom, thus playing a role in isolation and sealing.

[0025] In practical use, the device is first assembled. The connector cap 82 is placed on the outside of the gas guide tube 5. Then, one end of the gas guide tube 5 is placed on the straight tube seat 811 and located inside the compression limiting plate 812. Subsequently, the connector cap 82 is threadedly connected to the straight tube seat 811. The connector cap 82 moves axially along the straight tube seat 811. Then, the inclined surface inside the connector cap 82 presses against the compression limiting plate 812, so that the compression limiting plate 812 fits against the gas guide tube 5 and cooperates with the straight tube seat 811 to stably clamp the gas guide tube 5. The gas guide tube 5 is then connected to the fixed tube 3, the gas pipe connector 6, and the quick-release gas valve switch 7 in sequence. Finally, the vacuum pump is connected to the gas guide tube 5. When it is necessary to process the yttrium oxide ceramic thin plate, it is first fixed. The yttrium oxide ceramic thin plate is placed in the storage chamber 2, and then the yttrium oxide ceramic thin plate is located on top of the rubber sealing ring 12. The vacuum pump is started, and the quick-release gas valve switch is opened at the same time. The quick-release valve switch 7 uses a vacuum pump to quickly remove air from the bottom of the yttrium oxide ceramic sheet in the storage cavity 2. This causes the yttrium oxide ceramic sheet to be compressed under negative pressure, pressing the rubber sealing ring 12 against the bottom of the storage cavity 2. The rubber sealing ring 12 deforms under compression, making it even more tightly bonded to the yttrium oxide ceramic sheet. The vacuum pump continuously evacuates the cavity 9 at the bottom of the yttrium oxide ceramic sheet, ensuring that the yttrium oxide ceramic sheet is stably adsorbed in the storage cavity 2. When processing is complete and the yttrium oxide ceramic sheet needs to be removed, simply close the quick-release valve switch 7. At this time, the vacuum pump can no longer evacuate the cavity 9, and the air pressure in the cavity 9 gradually becomes consistent with the external air pressure. The elastic rebound of the rubber sealing ring 12 supports the yttrium oxide ceramic sheet, causing it to suspend in the storage cavity 2. Then, the operator removes the yttrium oxide ceramic sheet from the storage cavity 2 through the second clearance groove 14.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vacuum negative pressure clamping fixture for yttrium oxide ceramic plates, characterized in that, include: Workpiece positioning base (1); The top of the workpiece positioning base (1) has multiple rows of storage cavities (2) for storing yttrium oxide ceramic thin plates, arranged from left to right. Multiple sets of fixing tubes (3) are installed inside the workpiece positioning base (1). Multiple sets of suction tubes (4) connected to the storage cavities (2) are connected to the fixing tubes (3). One end of the fixing tube (3) extends to the outside of the workpiece positioning base (1) and is connected to a gas guide tube (5). A vacuum pump is connected to the end of the gas guide tube (5) away from the workpiece positioning base (1). A gas pipe connector (6) and a quick-release gas valve switch (7) are connected to the gas guide tube (5) through a connector assembly (8).

2. The vacuum negative pressure clamping fixture for yttrium oxide ceramic plates according to claim 1, characterized in that: The bottom of the storage cavity (2) has multiple sets of square-shaped cavities (9) arranged sequentially from the inside to the outside. The multiple sets of cavities (9) are connected through a channel (10), and the suction pipe (4) is connected to the cavity (9).

3. The vacuum negative pressure clamping fixture for yttrium oxide ceramic plates according to claim 1, characterized in that: The bottom of the inner cavity of the storage cavity (2) is provided with a groove (11), the groove (11) is located outside the cavity (9), and a rubber sealing ring (12) is embedded in the groove (11).

4. The vacuum negative pressure clamping fixture for yttrium oxide ceramic plates according to claim 1, characterized in that: The connector assembly (8) includes a connector seat (81) fixed to the end of the fixed pipe (3), the air pipe connector (6) and the quick-release air valve switch (7). The air guide pipe (5) is sleeved on the outside of the connector seat (81). A connector cap (82) is provided on the outside of the connector seat (81). The connector cap (82) is threadedly connected to the connector seat (81).

5. The vacuum negative pressure clamping fixture for yttrium oxide ceramic plates according to claim 4, characterized in that: The connector seat (81) includes a straight tube seat (811) threadedly connected to the connector cap (82). The air guide tube (5) is sleeved on one end of the straight tube seat (811). Multiple sets of compression limiting plates (812) located outside the air guide tube (5) are fixed on the outside of the straight tube seat (811). The inner cavity of the connector cap (82) is provided with an inclined surface for applying pressure to the compression limiting plates (812).

6. The vacuum negative pressure clamping fixture for yttrium oxide ceramic plates according to claim 1, characterized in that: The storage cavity (2) is provided with a first clearance groove (13) at the four corners, and a second clearance groove (14) is provided at the front and rear ends of the inner cavity of the storage cavity (2). The depth of the first clearance groove (13) and the second clearance groove (14) is the same as the depth of the storage cavity (2).

7. The vacuum negative pressure clamping fixture for yttrium oxide ceramic plates according to claim 3, characterized in that: The rubber sealing ring (12) has a hollow structure, and the thickness of the rubber sealing ring (12) is greater than the depth of the groove (11).

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