Large-cavity cubic press structure

Abstract

The utility model relates to the technical field of cubic presses, in particular to a large-cavity cubic press structure which comprises pressure-bearing beams, connecting blocks connected with the pressure-bearing beams through pin shafts and the pressure-bearing beams located on the six faces, the adjacent edges of every two adjacent pressure-bearing beams are hinged together, four connecting lugs are distributed on the outer wall of each pressure-bearing beam in a circumferential mode, and the connecting blocks are connected with the connecting blocks through pin shafts. A piston cavity is formed in the bottom face of the hexahedron structure, a connecting lug pin shaft hole is formed in the connecting lug, and the minimum linear distance from the connecting lug pin shaft hole to the center of the hexahedron structure is 0.7-2 times of the minimum vertical distance from the center of the hexahedron structure to the bottom face of the piston cavity. The middle space of the cubic press is effectively saved, the cubic press is still provided with a large operation window when the thickness of the connecting lugs is increased, and smooth production operation is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of six-sided top presses, in particular to a large-cavity six-sided top press structure. Background Art

[0002] The hinged six-sided top press is the most widely used large-cavity press in China. This type of press has the advantages of simple ultra-high pressure mold structure, low cost, and easy operation. It is a commonly used equipment for synthesizing superhard materials such as diamond and cubic boron nitride in China.

[0003] The main structure of the hinged six-sided top press consists of six hinged beams, twelve pins, six working cylinders and a machine base, as well as protective devices. The six working cylinders are respectively installed on the six hinged beams, and the six hinged beams are hinged with twelve pins to form a hexahedral rigid frame.

[0004] However, with the development of technology, higher requirements are placed on the size and quality of superhard materials, and the bearing capacity of the equipment has increased accordingly, resulting in a significant reduction in the service life of the hinge beam. The main failure mode is the breakage of the hinge beam ear, and the equipment maintenance cost is very high. The pin hole on the hinge beam ear is located at the front end of the hinge beam ear. If the thickness of the hinge beam ear is increased, the volume of the six-sided top press cavity will be reduced, and the area of ​​the operating window will be reduced, affecting the smooth progress of production operations. If the volume of the press is enlarged, the cost of the press will increase significantly. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a large cavity six-sided top press structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A large-cavity six-sided top press structure includes a pressure beam, a connecting block connected to the pressure beam through a pin shaft, the pressure beams located on six faces, and adjacent sides of two adjacent pressure beams are hinged together. Four connecting ears are circumferentially distributed on the outer wall of the pressure beam, and connecting ear pin shaft holes are opened on the connecting ears. The minimum straight-line distance from the connecting ear pin shaft hole to the center of the hexahedral structure is 0.7 times to 2 times the minimum vertical distance from the center of the hexahedral structure to the bottom surface of the piston cavity.

[0008] Preferably, when one end of the connecting block is connected to the connecting ear, the connecting block cannot rotate freely around the pin.

[0009] Preferably, a limiting block is protrudingly provided on the outer wall of the pressure beam, and the end surface of the connecting block is in contact with the limiting block, so that the free rotation of the connecting block is limited by the limiting block.

[0010] Preferably, the pin is a non-circular pin.

[0011] Preferably, the number of connection blocks connected to a single connection ear is two, and the connection blocks are clamped on both sides of the connection ear.

[0012] Preferably, the number of the connecting block connected to a single connecting ear is one, a slot adapted to the connecting ear is provided in the middle of the connecting block, and the connecting block is sleeved on the outside of the connecting ear.

[0013] The beneficial effects of the utility model are:

[0014] 1. Compared with the traditional hinged six-sided press, the large-cavity six-sided press structure proposed by the utility model moves the connecting ear pin shaft hole backward and connects with the connecting block and the pin shaft, which effectively saves the space in the middle of the six-sided press. When the thickness of the connecting ear is increased, the six-sided press still has a larger operating window, ensuring that the production operation can be carried out smoothly.

[0015] 2. The large-cavity six-sided press structure proposed in the utility model moves the pin shaft hole of the connecting ear backward, so that the length of the area on the connecting ear that is subjected to the pin shaft tension is significantly increased. Under the condition that the thickness of the connecting ear remains unchanged, it can greatly improve the tensile performance of the connecting ear, and the press structure can withstand higher working pressure; on the other hand, after the pin shaft hole on the connecting ear is moved backward, the connecting ear can form a whole with the area on the pressure beam located at the rear of the piston cavity, further improving the tensile performance of the connecting ear.

[0016] 3. The large-cavity six-sided press structure proposed by the utility model has a connection block that cannot rotate freely around the pin shaft when one end of the connection block is connected to the connection ear. When the six-sided press is assembled, the connection block cannot rotate, and there is no need to limit the connection block, thereby improving the installation efficiency. When the six-sided press is disassembled, the connection block cannot rotate, thereby preventing the connection block from suddenly rotating and hitting the operator or other objects, thereby improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of a large-cavity six-sided top press structure proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of a large cavity six-sided top press structure proposed by the utility model;

[0019] Figure 3 This is a schematic cross-sectional view of a large cavity six-sided top press structure proposed by the utility model;

[0020] Figure 4 A schematic cross-sectional view of adjacent pressure beams of a large cavity six-sided top press structure proposed by the utility model Figure 1 ;

[0021] Figure 5 A schematic cross-sectional view of adjacent pressure beams of a large cavity six-sided top press structure proposed by the utility model Figure 2 ;

[0022] Figure 6 A schematic cross-sectional view of adjacent pressure beams of a large cavity six-sided top press structure proposed by the utility model Figure 3 ;

[0023] Figure 7 A schematic cross-sectional view of adjacent pressure beams of a large cavity six-sided top press structure proposed by the utility model Figure 4 ;

[0024] Figure 8 This is a schematic diagram of the main structure of a pressure beam of a large cavity six-sided top press structure in Example 1 of the utility model;

[0025] Fig. 9 A schematic diagram of a large cavity six-sided top press structure in Example 2 of the utility model Figure 1 ;

[0026] Fig.10 A schematic diagram of a large cavity six-sided top press structure in Example 2 of the utility model Figure 2 ;

[0027] Fig.11 A schematic diagram of a large cavity six-sided top press structure in Example 2 of the utility model Figure 3 .

[0028] In the figure: 1 pressure beam, 2 connecting block, 3 pin shaft, 11 connecting ear, 12 connecting ear pin shaft hole, 13 piston cavity, 14 limit block. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] Reference Figure 1-7A large-cavity six-sided top press structure comprises a pressure beam 1, a connecting block 2 connected to the pressure beam 1 through a pin 3, the number of the pressure beams 1 is six, the adjacent pressure beams 1 are perpendicular to each other, distributed in six directions, and connected into a hexahedral structure through the pin 3 and the connecting block 2, a piston cavity 13 is provided on the side of the pressure beam 1 facing the center of the hexahedral structure, the piston cavity 13 is used to install the piston, four connecting ears 11 are distributed circumferentially on the outer wall of the pressure beam 1, the connecting ears 11 are provided with connecting ear pin shaft holes 12, the minimum straight-line distance from the connecting ear pin shaft hole 12 to the center of the hexahedral structure is 0.7 times to 2 times the minimum vertical distance from the center of the hexahedral structure to the bottom surface of the piston cavity 13, that is, the connecting ear pin shaft hole 12 is located near the bottom surface of the piston cavity 13 or behind the bottom surface of the piston cavity 13, Figure 4 In the middle, the connecting ear pin shaft hole 12 is close to the bottom surface of the piston chamber 13, Figure 5-7 In the figure, the connecting ear pin shaft hole 12 is located in different areas behind the piston chamber 13, a connecting block pin shaft hole is opened at the end of the connecting block 2, and the pin shaft 3 is inserted into the connecting ear pin shaft hole 12 and the connecting block pin shaft hole.

[0031] There are two connection blocks 2 connected to a single connection ear 11 , and the connection blocks 2 are clamped on both sides of the connection ear 11 . At this time, the connection blocks 2 are split.

[0032] There is one connecting block 2 connected to a single connecting ear 11, a slot adapted to the connecting ear 11 is provided in the middle of the connecting block 2, and the connecting block 2 is sleeved on the outside of the connecting ear 11. In this case, the connecting block 2 is integral. In another case, there is one connecting block 2 connected to a single connecting ear 11, the connecting block 2 is sheet-shaped, and the connecting block 2 is in contact with only one side of the connecting ear 11. In this case, the force balance of the connecting ear 11 is slightly reduced.

[0033] When one end of the connection block 2 is connected to the connection ear 11 , the connection block 2 cannot rotate freely around the pin 3 .

[0034] In Example 1, Figure 8 As shown, a limiting block 14 is protrudingly provided on the outer wall of the pressure beam 1, and the end surface of the connecting block 2 is in contact with the limiting block 14, so that the free rotation of the connecting block 2 is limited by the limiting block 14.

[0035] In Example 2, Figure 9-11 As shown, the pin 3 is a non-circular pin. Fig. 9 The middle pin 3 is a square with rounded corners. Fig.10 The middle pin 3 is oval. Fig.11 The middle pin 3 is a circle with a groove, and the pin 3 can also be an oblong, a circle with convex strips, etc.

[0036] Compared with the traditional hinged six-sided press, the large-cavity six-sided press structure proposed by the utility model moves the connecting ear pin shaft hole backward and cooperates with the connecting block 2 and the pin shaft 3 for connection, which effectively saves the space in the middle of the six-sided press. When the thickness of the connecting ear 11 is increased, the six-sided press still has a larger operating window, ensuring that the production operation can be carried out smoothly.

[0037] The large-cavity six-sided top press structure proposed in the utility model moves the connecting ear pin shaft hole 12 on the connecting ear 11 backward, so that the length of the area on the connecting ear 11 that is subjected to the tension of the pin shaft 3 is significantly increased. When the thickness of the connecting ear 11 remains unchanged, the tensile performance of the connecting ear 11 can be greatly improved; on the other hand, after the connecting ear pin shaft hole 12 on the connecting ear 11 is moved backward, the connecting ear 11 can form a whole with the area on the pressure beam 1 located at the rear of the piston cavity, further improving the tensile performance of the connecting ear.

[0038] The utility model proposes a large-cavity six-sided top press structure. When one end of the connecting block 2 is connected to the connecting ear 11, the connecting block 2 cannot rotate freely around the pin shaft 3. When the six-sided top press is assembled, the connecting block 2 cannot rotate, and there is no need to limit the connecting block 2, thereby improving the installation efficiency. When the six-sided top press is disassembled, the connecting block 2 cannot rotate, thereby preventing the connecting block 2 from suddenly rotating and hitting the operator or other objects, thereby improving the safety of the device.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A large cavity six-sided top press structure, comprising a pressure beam (1), a connecting block (2) connected to the pressure beam (1) through a pin (3), the pressure beams (1) located on six sides, and adjacent sides of two adjacent pressure beams (1) are hinged together, characterized in that: Four connecting ears (11) are circumferentially distributed on the outer wall of the pressure beam (1), and a connecting ear pin shaft hole (12) is opened on the connecting ear (11). The minimum straight-line distance from the connecting ear pin shaft hole (12) to the center of the hexahedral structure is 0.7 times to 2 times the minimum vertical distance from the center of the hexahedral structure to the bottom surface of the piston chamber (13).

2. A large cavity six-sided top press structure according to claim 1, characterized in that: When one end of the connection block (2) is connected to the connection ear (11), the connection block (2) cannot rotate freely around the pin shaft (3).

3. A large cavity six-sided top press structure according to claim 2, characterized in that: A limiting block (14) is protrudingly provided on the outer wall of the pressure-bearing beam (1), and the end surface of the connecting block (2) is in contact with the limiting block (14), so that the free rotation of the connecting block (2) is limited by the limiting block (14).

4. A large cavity six-sided top press structure according to claim 2, characterized in that: The pin shaft (3) is a non-circular pin shaft.

5. A large cavity six-sided top press structure according to claim 3 or 4, characterized in that: The number of connection blocks (2) connected to a single connection ear (11) is two, and the connection blocks (2) are clamped on both sides of the connection ear (11).

6. A large cavity six-sided top press structure according to claim 3 or 4, characterized in that: The number of the connecting block (2) connected to the single connecting ear (11) is one, a slot adapted to the connecting ear (11) is provided in the middle of the connecting block (2), and the connecting block (2) is sleeved on the outside of the connecting ear (11).

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