Air tightness detection tool for vacuum valve of die-casting die

Abstract

The utility model discloses a die-casting die vacuum valve airtightness detection tool, which comprises a detection table, a vacuum valve and a locking oil cylinder, the locking oil cylinder is fixedly clamped on the detection table through a support column, the vacuum valve is fixed on the detection table, the lower part of the locking oil cylinder is opposite to the vacuum valve, a valve rod of the vacuum valve extends out of the bottom of the detection table, and a liquid storage device is arranged above the vacuum valve. The liquid storage device is installed at the locking oil cylinder, and the side edge of the vacuum valve is connected with the pneumatic detection device. According to the air tightness detection tool for the vacuum valve of the die-casting die, gas is introduced into the pneumatic detection device, instrument data are observed, a proper amount of soapy water is added to the top of the vacuum valve through the liquid adding guide pipe, whether bubbles emerge from the top of the valve rod or not is checked, and the detection efficiency and the detection precision are greatly improved.

Description

Technical Field

[0001] The utility model relates to a detection tooling, in particular to a detection tooling for air tightness of a vacuum valve of a die-casting mold. Background Technique

[0002] At present, a vacuum pressure casting mold generally evacuates the mold cavity to a vacuum through a vacuum pipe. When measuring the air tightness of the vacuum valve, the whole set of equipment needs to be installed on the mold processing equipment, the connection is complex, and then a vacuum pumping operation is carried out, and the vacuum degree is measured through a pressure gauge.

[0003] At this time, if the measured result shows air leakage, the whole set of equipment needs to be disassembled and reassembled before re-detection, the operation time is long, and the detection efficiency is low.

[0004] Under the condition of not increasing the installation and disassembly costs, it is particularly important to check the air tightness of the vacuum valve and improve the efficiency. Summary of the Invention

[0005] The technical problem solved by the utility model is to overcome the defect of low detection efficiency of the air tightness of the existing vacuum valve, and provide a detection tooling for the air tightness of the vacuum valve of a die-casting mold, which greatly improves the detection efficiency and detection accuracy.

[0006] The utility model provides the following technical solutions:

[0007] A detection tooling for the air tightness of a vacuum valve of a die-casting mold, comprising a detection table, a vacuum valve and a locking oil cylinder. The locking oil cylinder is fixedly clamped on the detection table through a support column. The vacuum valve is fixed on the detection table. The locking oil cylinder is directly opposite to the vacuum valve below. The valve rod of the vacuum valve extends out of the bottom of the detection table. A liquid storage device is arranged above the vacuum valve. The liquid storage device is installed at the locking oil cylinder. An air pressure detection device is connected to the side of the vacuum valve.

[0008] Further, the air pressure detection device comprises a pipeline, an instrument, a check valve and a liquid adding conduit. One end of the pipeline is installed with a check valve, the other end of the pipeline is installed with an instrument, and the liquid adding conduit is communicated with the liquid storage device above.

[0009] Further, gas is introduced at the check valve.

[0010] Further, the liquid storage device stores soapy water, and the soapy water is introduced into the liquid adding conduit.

[0011] Compared with the prior art, the beneficial effect of the utility model is that: for the detection tooling for the air tightness of the vacuum valve of the die-casting mold of the utility model, gas is introduced into the air pressure detection device, the data of the instrument is observed, an appropriate amount of soapy water is added to the top of the vacuum valve through the liquid adding conduit, and it is checked whether there are bubbles emerging from the top of the valve rod, which greatly improves the detection efficiency and detection accuracy. Brief Description of the Drawings

[0012] Figure 1 This is a schematic structural view of the present utility model.

[0013] Figure 2 This is a schematic view of adding liquid to the top of the vacuum valve of the present utility model.

[0014] In the figure: 1. Detection table; 2. Locking oil cylinder; 3. Vacuum valve; 4. Support pillar; 5. Valve rod; 6. Liquid storage device; 7. Pipeline; 8. Instrument; 9. Check valve; 10. Liquid adding conduit. Specific implementation manners

[0015] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0016] Please refer to Figure 1-2 , a die-casting mold vacuum valve airtightness detection tooling of the present utility model, includes a detection table 1, a vacuum valve 3 and a locking oil cylinder 2. The locking oil cylinder 2 is fixedly clamped on the detection table 1 through a support pillar 4. The vacuum valve 3 is fixed on the detection table 1. The locking oil cylinder 2 is directly opposite to the vacuum valve 3 below. The valve rod 5 of the vacuum valve 3 extends out of the bottom of the detection table 1. A liquid storage device 6 is arranged above the vacuum valve 3. The liquid storage device 6 is installed at the locking oil cylinder 2. A pneumatic detection device is connected to the side of the vacuum valve 3.

[0017] The pneumatic detection device includes a pipeline 7, an instrument 8, a check valve 9 and a liquid adding conduit 10. One end of the pipeline 7 is installed with a check valve 9, and the other end of the pipeline 7 is installed with an instrument 8. The liquid adding conduit 10 is communicated with the liquid storage device 6 above. Gas can be introduced at the check valve 9.

[0018] Soap water is stored in the liquid storage device 6, and the soap water is introduced into the liquid adding conduit 10. The liquid adding conduit 10 is directly opposite to the vacuum valve 3 below, which is convenient for liquid adding test.

[0019] The working pressure of the locking oil cylinder 2 is 16 MPa. Fix the detected vacuum valve 3 on the detection table 1, insert the valve rod 5 of the vacuum valve 3, use the locking oil cylinder 2 to press the top of the valve rod 5, and add an appropriate amount of soap water to the top of the vacuum valve 3 through the liquid adding conduit 10. Introduce compressed air (the instrument shows 0.6 - 0.8 MPa) from the side of the vacuum valve 3, and check whether there are bubbles emerging from the top of the valve rod 5.

[0020] If there are no bubbles, it represents qualified. If there are bubbles, it represents unqualified, and the fitting part of the vacuum valve and the valve rod needs to be re-ground and then tested to meet the standard requirements.

[0021] The airtightness detection tooling for the vacuum valve of the die-casting mold of the utility model. The pneumatic detection device is filled with gas, and the instrument data is observed. An appropriate amount of soapy water is added to the top of the vacuum valve 3 through the liquid adding conduit 10, and it is checked whether there are bubbles emerging from the top of the valve stem 5, which greatly improves the detection efficiency and detection accuracy.

[0022] Although the embodiments of the utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A die-casting mold vacuum valve airtightness detection tooling, characterized in that: It includes a detection table (1), a vacuum valve (3) and a locking oil cylinder (2). The locking oil cylinder (2) is fixedly clamped on the detection table (1) through a support column (4). The vacuum valve (3) is fixed on the detection table (1). The locking oil cylinder (2) is directly opposite the vacuum valve (3) below. The valve stem (5) of the vacuum valve (3) extends out of the bottom of the detection table (1). A liquid storage device (6) is arranged above the vacuum valve (3). The liquid storage device (6) is installed at the locking oil cylinder (2). The side of the vacuum valve (3) is connected to a pneumatic detection device.

2. The airtightness detection tooling for the vacuum valve of a die-casting mold according to claim 1, wherein: The pneumatic detection device includes a pipeline (7), an instrument (8), a check valve (9) and a liquid adding conduit (10). One end of the pipeline (7) is installed with the check valve (9). The other end of the pipeline (7) is installed with the instrument (8). The liquid adding conduit (10) is communicated with the liquid storage device (6) above.

3. A leak tightness detection tool for a vacuum valve of a die casting mold according to claim 2, characterized in that: Gas is introduced at the check valve (9).

4. A leak tightness detection tooling for a vacuum valve of a die casting mold according to claim 1, characterized in that: Soap water is stored in the liquid storage device (6), and the soap water is introduced into the liquid adding conduit (10).

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