Airtight test tool for brake pump body isolation tank

Abstract

The utility model discloses an airtight tool for an isolation tank of a brake pump body, which is characterized by comprising a plurality of stations for simultaneously processing workpieces, and a base for supporting the workpieces and simultaneously pressurizing and detecting the interiors of the workpieces is arranged at the bottoms of the stations. And a clamping mechanism for downwards driving the workpiece to be clamped with the base is arranged at the upper part of the station. The fixed positioning plate is matched with the stabilizing component, so that the isolation tank is pressed down and fixed at multiple stations under the telescopic driving of the air cylinder driver to perform air tightness detection at the same time.

Description

Technical Field

[0001] This utility model relates to the field of brake pump isolation tank testing, and in particular to a brake pump body isolation tank airtightness testing fixture. Background Technology

[0002] The brake system's isolation tank is used to isolate the brake fluid inside the pump from the external environment. In the current production process, the isolation tanks are directly packaged after production, and the airtightness of the samples is tested by random sampling. Due to repeated complaints from customers regarding the brake system's sealing performance, it is necessary to change the original random sampling method to a full inspection after production. The existing manual, independent airtightness testing method can no longer keep up with the production pace and meet efficiency requirements. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the purpose of this utility model is to provide a brake release tank airtightness testing fixture to improve the efficiency of airtightness performance testing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A brake pump body isolation tank airtight tooling includes several stations for simultaneously processing workpieces. The bottom of each station has a base that supports the workpiece and simultaneously pressurizes and detects the inside of the workpiece. The upper part of each station has a clamping mechanism that drives the workpiece downward to clamp it with the base.

[0006] Furthermore, the clamping mechanism drives the workpiece to clamp with the base via a driver, and the driver and the workpiece are connected by a stabilizing member to ensure that the workpiece is accurately clamped with the base under the drive of the driver.

[0007] Furthermore, the stabilizing component includes a positioning plate, on which a movable ejector pin is mounted with reference to the positioning plate, and the driver is connected to the workpiece through the movable ejector pin.

[0008] Furthermore, the lower part of the movable ejector pin is connected to a pressure head, the outer diameter of which is larger than the outer diameter of the movable ejector pin, and the pressure head also has a guide post that inserts upward from the side into the positioning plate.

[0009] Furthermore, a positioning ring is arranged on the positioning plate, the movable ejector pin passes through the positioning ring into the positioning plate, and a bushing is arranged between the movable ejector pin and the positioning ring.

[0010] Furthermore, the lower end of the movable ejector pin is connected to the pressure head via a bolt structure.

[0011] Furthermore, the end of the driver is a frustum structure, and the outer diameter of the frustum structure is larger than the outer diameter of the movable ejector pin.

[0012] Furthermore, the base is connected to the gas tank, and a pressure sensor is arranged inside the base.

[0013] The beneficial effects of this utility model are as follows:

[0014] The present invention provides a brake pump body isolation tank airtightness testing fixture, which uses a fixed positioning plate and a stabilizing component to realize the simultaneous pressing and fixing of the isolation tank by multiple stations under the extension and retraction drive of the cylinder driver for airtightness testing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is an overall schematic diagram of the tooling of this utility model.

[0017] Figure 2 It is a sectional view of a single workstation.

[0018] Figure 3 yes Figure 2 A magnified view of a portion of the stabilizing component. Detailed Implementation

[0019] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The above description is for the purpose of simplifying the description of this utility model and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0020] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0021] When a component is described in the specification as being "on", "fixed" to, "connected" to, or "joined" to another component, the component may be directly located on, fixed to, connected to, joined to, or in contact with the other component, or there may be an intermediate component present.

[0022] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0023] Figure 1 The overall structure of this fixture is shown, including a first station 1, a second station 2, a third station 3, and a fourth station 4 for simultaneously testing multiple workpieces 10. After the workpiece 10 is pressed and sealed downward by the clamping mechanism 20 located at the top, it is filled with gas to test its integrity and airtightness.

[0024] Figure 2 and Figure 3 The specific structure of the clamping mechanism in the airtightness testing fixture is shown. A positioning plate 240 is provided between the workpiece 10 and the clamping mechanism 20, and a stabilizing component is arranged on the positioning plate 240. The clamping mechanism 20 is provided by a cylinder driver 220. Since the cylinder has poor stability during operation and is prone to vibration, the stabilizing component bridges the driver 220 of the clamping mechanism 20 and the workpiece 10 to ensure a stable engagement between the workpiece 10 and the base 210.

[0025] The stabilizing component includes a movable ejector pin 231 coaxial with the driver 220 and inserted within the positioning plate 240. A positioning ring 232 is fixed on the positioning plate 240, and the movable ejector pin 231 passes through the positioning ring 232, thereby ensuring the stability of the movement of the movable ejector pin 231 near the driver 220. The radial dimension of the movable ejector pin 231 is relatively small; therefore, the side near the workpiece 10 specifically contacts the workpiece 10 through a pressure head 235 with a similar radial dimension. The movable ejector pin 231 and the pressure head 235 are assembled by bolts 234. A stepped structure 241 is also arranged within the positioning plate 240 to limit the axial movement of the movable ejector pin 231, ensuring that the movable ejector pin 231 can move and transmit stably within the positioning plate 240. Furthermore, a bushing for reducing friction is arranged between the positioning ring 232 and the movable ejector pin 231.

[0026] The side of the pressure head 235 is provided with an upwardly extending guide post 236, which can be movably inserted into the positioning plate 240. Since the pressure head 235 and the movable ejector pin 231 are connected by bolts, the guide post 236 inserted into the positioning plate 240 prevents the pressure head 235 from rotating and loosening due to the bolt structure.

[0027] The end 221 of the driver 220 is engaged with the movable ejector pin 231 through a frustum structure 222 with a larger outer diameter. The frustum structure 222 and the movable ejector pin 231 are not fastened but are fitted with a clearance, which can effectively prevent the instability of the cylinder from being transmitted through the stabilizing component.

[0028] The base 210 has an air pipe interface 211 and a sensor 212. When the workpiece 10 is pressed against the base 210 by the clamping mechanism 20, gas is injected into it through the air pipe to generate a pressure of about 0.002-8 bar. The airtightness of the workpiece 10 is tested by the sensor 212.

Claims

1. A brake pump body isolation tank airtight tooling, characterized in that, It includes several workstations for simultaneously processing workpieces. The bottom of each workstation has a base that supports the workpiece and simultaneously applies pressure to the inside of the workpiece for detection. The upper part of each workstation has a clamping mechanism that drives the workpiece downward to clamp it with the base.

2. The airtight tooling for a brake pump body isolation tank as described in claim 1, characterized in that, The clamping mechanism drives the workpiece to clamp the base via a driver. The driver and the workpiece are connected by a stabilizing member to ensure that the workpiece is accurately clamped to the base under the drive of the driver.

3. The airtight tooling for a brake pump body isolation tank as described in claim 2, characterized in that, The stabilizing component includes a positioning plate, on which a movable ejector pin is mounted with reference to the positioning plate, and the driver is connected to the workpiece through the movable ejector pin.

4. The airtight tooling for a brake pump body isolation tank as described in claim 3, characterized in that, The lower part of the movable ejector pin is connected to a pressure head, the outer diameter of which is larger than the outer diameter of the movable ejector pin, and the pressure head also has a guide post that is inserted into the positioning plate from the side upwards.

5. The airtight tooling for a brake pump body isolation tank as described in claim 3, characterized in that, A positioning ring is arranged on the positioning plate, and the movable ejector pin passes through the positioning ring into the positioning plate. A bushing is arranged between the movable ejector pin and the positioning ring.

6. The airtight tooling for a brake pump body isolation tank as described in claim 4, characterized in that, The lower end of the movable ejector pin is connected to the pressure head via a bolt structure.

7. A brake pump body isolation tank airtight tooling as described in any one of claims 3 to 6, characterized in that, The end of the driver is a frustum structure, and the outer diameter of the frustum structure is larger than the outer diameter of the movable ejector pin.

8. The airtight tooling for a brake pump body isolation tank as described in claim 7, characterized in that, The base is connected to the gas tank, and a pressure sensor is arranged inside the base.

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