Pressure relief buffer device for working container of isostatic pressing machine

Abstract

The utility model discloses an isostatic press working container pressure relief buffer device which comprises a pressure-bearing frame, a lifting sealing plug is arranged at the top of the pressure-bearing frame, a working container is arranged in the pressure-bearing frame, a containing groove is formed in the working container, the bottom end of the containing groove is communicated with an oil injection channel, and the oil injection channel is communicated with an oil outlet of the oil injection channel. The oil injection channel is communicated with a pressurizing device, the bottom end of the containing groove is in an inverted cone shape, a metal buffer gasket is installed at the bottom end of the containing groove and connected with a fixing assembly, and a plurality of slow flow holes are evenly formed in the metal buffer gasket; the buffer gasket has the beneficial effects that the backflow speed of ultrahigh-pressure oil can be reduced through the flow slowing holes formed in the metal buffer gasket, so that the purposes of pressure relief and flow slowing are realized, the internal damage of a battery cell material is avoided, and the defective rate of battery cell material production is reduced.

Description

Technical field:

[0001] The utility model belongs to the field of isostatic presses, in particular to a pressure relief buffer device for a working container of an isostatic press. Background technology:

[0002] An isostatic press is a molding machine operating under ultra-high pressure. Isostatic pressing involves placing the object being processed in a specific mold. This mold, containing the workpiece, is then placed in a sealed container filled with liquid. A booster system gradually applies pressure, transmitting this pressure through the liquid. This ensures that all surfaces of the object are subjected to equal pressure, and the object is shaped within the mold's constraints. During the compression process, the distance between the molecules of the workpiece decreases, increasing its density and causing changes in the physical and even chemical properties of the pressed object.

[0003] Taking the production of battery cell materials as an example, during the manufacturing process, some materials will be formed using an isostatic press. After the battery cell material is placed in a specific mold, it will be placed in the container of the working container. After the lifting sealing plug seals the container mouth, the boosting device in the boosting system will transport oil to the oil filling channel through the high-pressure oil pipe. The oil in the oil filling channel then enters the container. As time goes by, the boosting system gradually transmits the ultra-high pressure to the battery cell material through the oil, thereby completing the final forming of the workpiece. In the actual operation process, after the battery cell material is formed, a pressure relief operation will be performed to return the ultra-high pressure oil in the container to the boosting device. Since the container and the oil filling channel are directly connected and there is no pressure relief and flow control device in the middle to allow the oil to flow slowly, the instantaneous reflux speed of the ultra-high pressure oil in the container is relatively fast, causing the ultra-high pressure on the surface of the battery cell material to disappear too quickly, which can easily cause internal damage to the battery cell material, significantly increase the scrap rate, increase the cost investment, and affect the progress of battery cell material production. Utility model content:

[0004] The purpose of the utility model is to provide a pressure relief buffer device for an isostatic press working container, and overcome the shortcomings of the above-mentioned prior art, which effectively solves the existing problem that the internal part of the battery core material is easily damaged due to the fast pressure relief speed during production.

[0005] The content of the utility model: A pressure relief buffer device for an isostatic press working container, comprising a pressure-bearing frame, a lifting sealing plug being arranged on the top of the pressure-bearing frame, a working container being arranged in the pressure-bearing frame, a containing groove being opened on the working container, an oil filling channel being connected to the bottom end of the containing groove, the oil filling channel being connected to a pressurizing device, the bottom end of the containing groove being in an inverted cone shape, a metal buffer gasket being installed at the bottom end of the containing groove, the metal buffer gasket being connected to a fixed component, and a plurality of slow flow holes being evenly opened on the metal buffer gasket.

[0006] Furthermore, the fixing assembly includes a positioning ring, which is coaxially fixedly installed in the port of the oil filling channel, a nut is provided at the axis of the positioning ring, and several support arms are evenly connected to the outer wall of the nut. The outer end of the support arm is fixedly connected to the inner wall of the positioning ring, and a bolt is threaded on the nut, and the top of the bolt is fixedly connected to the bottom wall of the metal buffer gasket.

[0007] Furthermore, the metal buffer gasket is circular, and the bolt is coaxially installed with the metal buffer gasket.

[0008] Furthermore, a chamfer is provided on the circumferential surface of the metal buffer gasket.

[0009] The beneficial effects of the utility model are as follows: the slow-flow holes opened on the metal buffer gasket can reduce the return speed of the ultra-high-pressure oil, thereby achieving the purpose of pressure relief and slow flow, avoiding internal damage to the battery core material, and reducing the scrap rate of the battery core material production. Description of the drawings:

[0010] Figure 1 This is the overall structural view of the utility model;

[0011] Figure 2 for Figure 1 A partial enlarged view of part A;

[0012] Figure 3 This is a front view of the metal buffer gasket in the utility model;

[0013] Figure 4 This is a front view of the fixing assembly in the present utility model;

[0014] In the figure, 1 is a pressure frame, 2 is a lifting sealing plug, 3 is a working container, 4 is a container tank, 5 is an oil filling channel, 6 is a pressurizing device, 7 is a metal buffer gasket, 8 is a slow flow hole, 9 is a positioning ring, 10 is a nut, 11 is a support arm, and 12 is a bolt. Specific implementation method:

[0015] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings:

[0016] like Figures 1 to 4As shown, a pressure relief buffer device for an isostatic press working container includes a pressure-bearing frame 1, a lifting sealing plug 2 is provided on the top of the pressure-bearing frame 1, a working container 3 is provided in the pressure-bearing frame 1, a receiving groove 4 is provided on the working container 3, an oil injection channel 5 is connected to the bottom end of the receiving groove 4, and the oil injection channel 5 is connected to the pressurizing device 6, the bottom end of the receiving groove 4 is in an inverted cone shape, a metal buffer gasket 7 is installed at the bottom end of the receiving groove 4, the metal buffer gasket 7 is connected to the fixed component, a plurality of slow flow holes 8 are evenly provided on the metal buffer gasket 7, and the fixed component It includes a positioning ring 9, which is coaxially fixedly installed in the port of the oil filling channel 5. A nut 10 is provided at the axis of the positioning ring 9. A number of support arms 11 are evenly connected to the outer wall of the nut 10. The outer end of the support arm 11 is fixedly connected to the inner wall of the positioning ring 9. A bolt 12 is screwed on the nut 10. The top of the bolt 12 is fixedly connected to the bottom wall of the metal buffer gasket 7. The metal buffer gasket 7 is circular. The bolt 12 is coaxially installed with the metal buffer gasket 7, and a chamfer is provided on the circumferential surface of the metal buffer gasket 7.

[0017] Specifically, the slow-flow hole 8 opened on the metal buffer gasket 7 can reduce the return speed of the ultra-high pressure oil, thereby achieving the purpose of pressure relief and slow flow, and avoiding internal damage to the battery core material.

[0018] During actual use, after the battery core material is placed in a specific mold, it will be placed in the containing groove 4 of the working container 3. After the lifting sealing plug 2 seals the containing groove 4, the boosting device 6 in the boosting system will transport oil to the oil filling channel 5 through the high-pressure oil pipe. The oil in the oil filling channel 5 passes through the positioning ring 10 and the slow-flow hole 8 and then enters the containing groove 4. As time goes by, the boosting system gradually transmits the ultra-high pressure to the battery core material through the oil to complete the final forming of the workpiece. When the pressure is relieved, the several slow-flow holes 8 evenly opened on the metal buffer gasket 7 can reduce the reflux speed of the ultra-high pressure oil in the containing groove 4, thereby reducing the speed at which the ultra-high pressure on the surface of the battery core material disappears, thereby avoiding damage to the internal part of the battery core material.

[0019] Rotating the metal buffer gasket 7 can connect the bolt 12 with the nut 10 set at the axis of the positioning ring 9, so that the metal buffer gasket 7 can be further fixed to prevent it from being displaced during operation; the chamfer opened on the circumferential surface of the metal buffer gasket 7 can make its bottom end fit with the bottom end of the inverted cone-shaped groove 4, preventing the oil from flowing away from the gap between the two, so that the oil can only flow from the slow flow hole 8, thereby improving the slow pressure relief effect of the ultra-high pressure oil.

[0020] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressure relief buffer device for an isostatic press working container, comprising a pressure-bearing frame (1), a lifting sealing plug (2) being provided on the top of the pressure-bearing frame (1), a working container (3) being provided in the pressure-bearing frame (1), a receiving groove (4) being provided on the working container (3), an oil injection passage (5) being connected to the bottom end of the receiving groove (4), the oil injection passage (5) being connected to a pressurizing device (6), and characterized in that: The bottom end of the containing groove (4) is in an inverted cone shape. A metal buffer gasket (7) is installed at the bottom end of the containing groove (4). The metal buffer gasket (7) is connected to a fixed component. A plurality of slow flow holes (8) are evenly opened on the metal buffer gasket (7).

2. The pressure relief buffer device for an isostatic press working container according to claim 1, characterized in that: The fixing assembly comprises a positioning ring (9), the positioning ring (9) being coaxially fixedly installed in the port of the oil filling passage (5), a nut (10) being provided at the axis of the positioning ring (9), a plurality of support arms (11) being evenly connected to the outer wall of the nut (10), the outer ends of the support arms (11) being fixedly connected to the inner wall of the positioning ring (9), a bolt (12) being screwed on the nut (10), the top end of the bolt (12) being fixedly connected to the bottom wall of the metal buffer gasket (7).

3. The pressure relief buffer device for an isostatic press working container according to claim 2, characterized in that: The metal buffer gasket (7) is circular in shape, and the bolt (12) is coaxially installed with the metal buffer gasket (7).

4. The pressure relief buffer device for an isostatic press working container according to claim 2, characterized in that: A chamfer is provided on the circumferential surface of the metal buffer gasket (7).

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