An airtightness testing device for valve block machining and positioning

Abstract

This utility model belongs to the field of tooling and fixture technology, and relates to an airtightness testing device for positioning valve block processing. It includes a square frame, with several positioning components on each side wall of the frame. Each positioning component includes a fixed block and a side top block driven by a cylinder, positioned opposite each other. Several support heads and several airtightness testing heads are provided between the fixed block and the side top block. The end faces of the support heads and the airtightness testing heads are flush. An air passage hole is provided on the end face of the airtightness testing head, and the air passage hole is connected to an airtightness testing mechanism via a pipe. By testing the airtightness at the air passage hole, the device determines whether the workpiece is accurately positioned, avoiding the problem of workpiece scrap due to inaccurate positioning.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, and in particular to an airtightness testing device for valve block machining and positioning. Background Technology

[0002] ABS safety valves are safety relief valves. The valve block machining of ABS safety valves must conform to drawings and technical requirements, and the dimensional and positional accuracy of each component must be controlled within specified ranges. During valve block machining, debris is generated. This debris adheres to the fixture surface, causing positioning deviations when the next valve block is installed on the fixture, affecting machining accuracy, leading to workpiece scrap, and increasing production costs. Therefore, this utility model proposes an airtightness detection device for valve block machining positioning. Utility Model Content

[0003] The main objective of this invention is to provide an airtightness testing device for valve block machining and positioning, so as to solve the problems mentioned in the background art.

[0004] This utility model achieves the above-mentioned objective through the following technical solution: an airtightness testing device for valve block processing and positioning, comprising a square frame, wherein a plurality of positioning components are provided on each side wall of the frame, the positioning components comprising a fixed block and a side top block driven by a cylinder, a plurality of support heads and a plurality of airtightness testing heads are provided between the fixed block and the side top block, the end faces of the support heads and the airtightness testing heads are flush, and an air passage hole is provided on the end face of the airtightness testing head, the air passage hole being connected to an airtightness testing mechanism through a pipe.

[0005] Preferably, the airtightness detection mechanism includes a gas supply component for supplying gas into the pipeline and several detection components for detecting changes in the gas within the pipeline. The gas supply component includes a gas tank, a main pipe, a first solenoid valve, and a control cabinet. One end of the main pipe is connected to the gas tank, and the other end is connected to multiple branch pipes via a first multi-port. The branch pipes are connected to multiple pipelines on the same positioning component via a second multi-port. The main pipe is connected to the first solenoid valve. The control cabinet is equipped with an on / off switch for controlling the on / off state of the first solenoid valve. The detection components are located on the branch pipes.

[0006] Preferably, the detection component includes a flow meter disposed on the diversion pipe, the flow meter being electrically connected to the control cabinet, and the control cabinet having a plurality of alarm indicator lights corresponding one-to-one with the flow meter.

[0007] Preferably, a second solenoid valve is provided on the diverter pipe upstream of the flow meter, and an adjustment switch for adjusting the flow of the second solenoid valve is provided in the control cabinet.

[0008] The beneficial effects of this utility model are as follows: When the workpiece is accurately positioned, the workpiece surface is in close contact with the end face of the airtightness detection head, thereby sealing the air passage. The airtightness of the air passage is tested by the airtightness detection mechanism. If the test result matches the expectation, the air passage is open if the workpiece is not properly clamped or if there are debris between the contact surfaces. If the airtightness detection structure does not match the expectation, an alarm is issued to notify the staff to check and re-clamp, thereby preventing the workpiece from being scrapped due to inaccurate positioning. Attached Figure Description

[0009] Figure 1 This is a partial structural diagram of an airtightness testing device used for valve block machining and positioning.

[0010] Figure 2 This is the second part of the structural diagram of the airtightness testing device used for valve block machining and positioning.

[0011] The numbers in the diagram represent:

[0012] 1. Stand; 2. Positioning assembly; 3. Fixing block; 4. Side top block; 5. Support head; 6. Air tightness detection head; 7. Air passage hole; 8. Pipe; 9. Air supply assembly; 10. Detection assembly; 11. Air tank; 12. Main pipe; 13. First solenoid valve; 14. Control cabinet; 15. On / off switch; 16. Diverter pipe; 17. First multi-port; 18. Second multi-port; 19. Flow meter; 20. Alarm indicator light; 21. Second solenoid valve; 22. Adjustment switch. Detailed Implementation

[0013] The present invention will be further described in detail below with reference to specific embodiments.

[0014] Example:

[0015] like Figure 1 and Figure 2As shown, this utility model discloses an airtightness testing device for valve block machining positioning, comprising a square frame 1. Several positioning components 2 are provided on each side wall of the frame 1. Each positioning component 2 includes a fixed block 3 and a side top block 4 driven by a cylinder, which are arranged opposite each other. Several support heads 5 and several airtightness testing heads 6 are provided between the fixed block 3 and the side top block 4. The end faces of the support heads 5 and the airtightness testing heads 6 are flush. An air passage hole 7 is provided on the end face of the airtightness testing head 6, and the air passage hole 7 is connected to a pipe 8. The airtightness testing mechanism places the workpiece to be processed between the fixed block 3 and the side top block 4. The side top block 4 clamps and fixes the workpiece. When the workpiece is accurately positioned, the surface of the workpiece is in close contact with the end face of the airtightness testing head 6, thereby sealing the air passage 7. The airtightness of the air passage 7 is tested by the airtightness testing mechanism. If the test result matches the expectation, the air passage 7 is in the open state if the workpiece is not clamped in place or if there are debris between the contact surfaces. If the airtightness test structure does not match the expectation, an alarm is issued to notify the staff to check and re-clamp.

[0016] The airtightness detection mechanism includes an air supply component 9 for supplying air to the pipeline 8 and several detection components 10 for detecting changes in the gas within the pipeline 8. The air supply component 9 includes a gas tank 11, a main pipe 12, a first solenoid valve 13, and a control cabinet 14. One end of the main pipe 12 is connected to the gas tank 11, and the other end is connected to multiple branch pipes 16 via a first multi-port 17. The branch pipes 16 are connected to multiple pipelines 8 on the same positioning component 2 via a second multi-port 18. The first solenoid valve 13 is connected to the main pipe 12. The control cabinet 14 contains... The on / off switch 15 is used to control the on / off state of the first solenoid valve 13. The detection component 10 is located on the diversion pipe 16. When the on / off switch 15 is opened, the high-pressure gas in the gas storage tank 11 passes through the main pipe 12, the diversion pipe 16 and the pipe 8 in sequence and enters the air passage hole 7. If the workpiece is accurately positioned and the air passage hole 7 is sealed, the detection component 10 detects that the gas change in the diversion pipe 16 is within the preset range. If the workpiece is not clamped in place and the air passage hole 7 is open, the gas change in the diversion pipe 16 detected by the detection component 10 does not match the preset value.

[0017] The detection component 10 includes a flow meter 19 mounted on the diversion pipe 16. The flow meter 19 is electrically connected to the control cabinet 14. The control cabinet 14 is equipped with multiple alarm indicator lights 20. The positioning component 2, the flow meter 19, and the alarm indicator lights 20 correspond one-to-one. The flow meter 19 is used to monitor the gas flow rate through the diversion pipe 16. When the workpiece is accurately positioned, the air passage 7 is sealed, and the gas flow rate through the diversion pipe 16 will gradually reach a stable value. The flow meter 19 sends the monitored data to the control terminal in the control cabinet 14. The control terminal controls the alarm indicator light 20 to light up green. When a workpiece is not accurately positioned, the air passage 7 is opened, and the airflow continues to leak through the air passage 7. The gas flow rate monitored by the flow meter 19 increases, and the control terminal controls the corresponding alarm indicator light 20 to light up red, reminding the staff to re-clamp the corresponding positioning component 2.

[0018] A second solenoid valve 21 is provided on the diversion pipe 16 upstream of the flow meter 19, and an adjustment switch 22 for adjusting the flow of the second solenoid valve 21 is provided in the control cabinet 14.

[0019] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A leak detection device for valve block machining positioning, characterized by: The device includes a square frame, and each side wall of the frame is provided with a number of positioning components. Each positioning component includes a fixed block and a side top block driven by a cylinder. Between the fixed block and the side top block, there are a number of support heads and a number of airtightness detection heads. The end faces of the support heads and the airtightness detection heads are flush. The end face of the airtightness detection head is provided with an air passage hole. The air passage hole is connected to an airtightness detection mechanism through a pipe.

2. The air tightness detection device for positioning valve block machining according to claim 1, characterized in that: The airtightness detection mechanism includes a gas supply component for supplying gas into the pipeline and several detection components for detecting changes in the gas within the pipeline. The gas supply component includes a gas tank, a main pipe, a first solenoid valve, and a control cabinet. One end of the main pipe is connected to the gas tank, and the other end is connected to multiple branch pipes via a first multi-port. The branch pipes are connected to multiple pipelines on the same positioning component via a second multi-port. The main pipe is connected to the first solenoid valve. The control cabinet is equipped with an on / off switch for controlling the opening and closing of the first solenoid valve. The detection components are located on the branch pipes.

3. A leak detection device for valve block machining positioning according to claim 2, characterized in that: The detection component includes a flow meter installed on the diversion pipe. The flow meter is electrically connected to the control cabinet. The control cabinet is equipped with multiple alarm indicator lights that correspond one-to-one with the flow meter.

4. The air tightness detection device for machining positioning of a valve block according to claim 3, characterized in that: A second solenoid valve is provided on the shunt pipe upstream of the flow meter, and an adjustment switch for adjusting the flow of the second solenoid valve is provided in the control cabinet.

Images