Automobile controller shell leakage detection tool

Abstract

The utility model discloses an automobile controller housing leak detection tool, which comprises a vacuum box, and a workpiece positioning assembly, a workpiece pressing assembly, a sealing pressing assembly and an inflation assembly which are arranged in the vacuum box, the workpiece pressing assembly is arranged above the workpiece positioning assembly, the sealing pressing assembly and the inflation assembly are respectively arranged at two sides of the workpiece positioning assembly, and the inflation assembly is arranged above the workpiece positioning assembly. The workpiece positioning assembly comprises a bottom plate and a sealing plate which are fixedly connected, the bottom plate is connected with the bottom of the vacuum box through a linear sliding rail, and the linear sliding rail is perpendicular to a box door of the vacuum box, so that the workpiece positioning assembly enters and exits the vacuum box through the linear sliding rail. The workpiece positioning assembly can get in and out of the vacuum box under the action of the linear sliding rail, so that the workpiece is convenient to take and place, and the leak detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a leak detection technology, in particular to a leak detection tool for a car controller shell. Background Art

[0002] With the rise of the automobile industry, the research and development and manufacturing technology of automobile controllers have become an important part of automobile development. The controller housing assembly plays a key role in ensuring the safe and stable working state of the controller. The controller housing is a hollow product with a water channel in the middle. Water circulates through the water channel to cool the controller components to prevent overheating or even fire caused by long-term operation of the controller components. Long-term moisture infiltration will affect the normal operation of the controller components. Therefore, the air tightness of the automobile controller housing has higher requirements. The traditional detection method is water detection, which is: relying on workers to block the inlet and outlet with their hands, put it in water, fill a certain pressure of gas at the bottom of the workpiece, and detect whether there are bubbles at various positions of the workpiece to determine the leakage. This detection method is inefficient and consumes a lot of manpower and material resources. The sealing effect of the manual compression method is also difficult to guarantee. Therefore, a stable, simple to operate, and automatically sealed gas detection tooling is needed to solve this problem. Utility Model Content

[0003] In order to solve the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a leak detection tool for an automobile controller housing, which can facilitate the placement of workpieces and improve the leak detection efficiency.

[0004] The utility model solves the technical problem by adopting the following technical solution: a leak detection tool for automobile controller housing, comprising a vacuum box and a workpiece positioning assembly, a workpiece clamping assembly, a sealing clamping assembly and an inflating assembly arranged in the vacuum box, wherein the workpiece clamping assembly is arranged above the workpiece positioning assembly, and the sealing clamping assembly and the inflating assembly are respectively located on both sides of the workpiece positioning assembly;

[0005] The workpiece positioning assembly includes a bottom plate and a sealing plate, the sealing plate is fixedly connected to the bottom plate, and an air-filling channel is provided in the bottom plate, the air-filling channel has an air inlet and an air outlet; a sealing pad is provided on the sealing plate, and both the sealing plate and the sealing pad are provided with an air-filling port, the air-filling port is butted and connected with the air outlet of the air-filling channel, and the air inlet of the air-filling channel is sealed and butted and connected with the air-filling assembly during inflation;

[0006] The bottom plate is connected to the bottom of the vacuum box through a linear slide rail, and the linear slide rail is perpendicular to the box door of the vacuum box, so that the workpiece positioning assembly enters and exits the vacuum box through the linear slide rail.

[0007] Optionally, the workpiece pressing assembly includes a pressing cylinder, a pressing plate, a pressing head, and a guiding column. The pressing cylinder is fixedly installed on the top of the vacuum chamber, and the output end of the pressing cylinder is fixedly connected to the pressing plate. The pressing heads are evenly distributed on the bottom surface of the pressing plate.

[0008] Four corners of the pressing plate are respectively slidably connected to four guiding columns fixed in the vacuum chamber, so that the pressing plate moves up and down along the guiding columns through the pressing cylinder.

[0009] Optionally, the sealing and pressing assembly includes a sealing cylinder, a connecting plate, a fixing plate, a sealing head, and a guiding rod. The fixing plate is fixedly installed on the top surface of the bottom plate. One end of the guiding rod is fixedly connected to the connecting plate, and the other end is slidably connected to the fixing plate. The sealing head is fixedly installed on a side surface of the connecting plate away from the sealing cylinder.

[0010] The sealing cylinder is fixedly installed on the side of the vacuum chamber, and the output end of the sealing cylinder extends into the vacuum chamber. When the sealing head performs the sealing process, the output end of the sealing cylinder abuts against the connecting plate.

[0011] Optionally, a spring is connected between the connecting plate and the fixing plate.

[0012] Optionally, the inflation assembly is arranged on the opposite side of the sealing cylinder. The inflation assembly includes an inflation cylinder and an inflation rod. A gas passage is arranged inside the inflation rod, and the inflation rod is connected to the output end of the inflation cylinder. One end of the inflation rod is connected to a helium gas source, and the other end is arranged inside the vacuum chamber.

[0013] During inflation, the end of the inflation rod is docked with the air inlet of the inflation passage.

[0014] With the above technical solution, the workpiece positioning assembly of the present utility model can enter and exit the vacuum chamber under the action of the linear slide rail, so as to facilitate the picking and placing of workpieces and improve the leak detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the present utility model;

[0016] Figure 2 is a structural schematic diagram of the sealing plate of the present utility model;

[0017] Figure 3 is a structural schematic diagram of the pressing plate of the present utility model;

[0018] Figure 4 is a structural schematic diagram of the sealing and pressing assembly of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than limiting the utility model. Additionally, it should be noted that for ease of description, only the parts related to the utility model are shown in the drawings.

[0020] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the drawings and embodiments.

[0021] As Figure 1 shown, the present utility model discloses a leak detection tooling for an automotive controller housing. This leak detection tooling can achieve rapid workpiece picking and placing, thereby improving the leak detection efficiency. The leak detection tooling includes a vacuum chamber 100 and a workpiece positioning assembly 200, a workpiece pressing assembly 300, a sealing pressing assembly 400, and an inflation assembly 500 disposed within the vacuum chamber 100. Among them, the workpiece pressing assembly 300 is disposed above the workpiece positioning assembly 200, and the sealing pressing assembly 400 and the inflation assembly 500 are respectively located on both sides of the workpiece positioning assembly 200.

[0022] In the present utility model, the workpiece positioning assembly 200 is used to place the workpiece. After the workpiece is placed, the workpiece is positioned in the workpiece positioning assembly 200 by the workpiece pressing assembly 300. Specifically, the workpiece positioning assembly 200 includes a bottom plate 210 and a sealing plate 220. The sealing plate 220 is used to seal the opening of the workpiece. When placing the workpiece, the opening of the workpiece faces the sealing plate 220. The sealing plate 220 and the bottom plate 210 are fixedly connected by screws. An inflation channel (not shown in the figure) is further provided within the bottom plate 210. The inflation channel is used to supplement helium into the workpiece to facilitate helium leak detection. The inflation channel has an air inlet and an air outlet. Its air outlet is communicated with the inner cavity of the workpiece, and the air inlet is matched with the inflation assembly so that when the leak detection program is started, the inflation assembly is docked with the air inlet to complete the helium filling process. In an embodiment of the present utility model, as Figure 2 shown, in order to ensure the sealing performance of the sealing plate 220 for the workpiece, a sealing gasket 230 can be provided on the sealing plate 220. Since the air outlet of the inflation channel needs to be communicated with the workpiece, inflation ports are provided in both the sealing plate 220 and the sealing gasket 230. At the same time, a sealing ring can be connected between the inflation port and the air outlet of the inflation channel to ensure the sealing performance.

[0023] In the present utility model, as Figure 1As shown, a linear slide rail 240 is fixedly installed at the bottom of the vacuum chamber 100. The bottom plate 210 is slidably connected in the linear slide rail 240. The linear slide rail 240 is perpendicular to the door of the vacuum chamber 100. This facilitates the workpiece positioning assembly 200 to enter and exit the vacuum chamber 100 through the linear slide rail 240. When placing and removing the workpiece, the bottom plate 210 can be slid out of the vacuum chamber along the linear slide rail 240. During helium leak detection, the bottom plate 210 retracts into the vacuum chamber 100. Through this setting, it is convenient to pick up and place the workpiece, thereby improving the leak detection efficiency. In addition, in order to facilitate the movement of the bottom plate 210, a propulsion cylinder (not shown in the figure) can be installed on one side of the vacuum chamber 100 relative to the door. The output end of the propulsion cylinder is fixedly connected to the bottom plate 210. The bottom plate 210 is pushed out of the vacuum chamber 100 or pulled back into the vacuum chamber 100 by the propulsion cylinder.

[0024] In the present utility model, the workpiece pressing assembly 300 is used to apply pressure to the workpiece so that the opening of the workpiece can be closely docked with the gasket 230 to prevent air leakage from the opening of the workpiece. As Figure 1 and Figure 3 shown, the workpiece pressing assembly 300 includes a pressing cylinder 310, a pressing plate 320, a pressing head 330, and a guide post 340. Among them, the pressing cylinder 310 is fixedly installed at the top of the vacuum chamber 100, and the output end of the pressing cylinder 310 extends into the vacuum chamber 100 and is fixedly connected to the pressing plate 320. The pressing heads 330 are evenly distributed on the bottom surface of the pressing plate 320. The guide posts 340 are distributed at the four corner positions inside the vacuum chamber 100 and are fixedly connected to the bottom of the vacuum chamber 100. The four corners of the pressing plate 320 are respectively slidably connected to the four guide posts 340, so that the pressing plate 320 moves up and down along the guide posts 340 through the pressing cylinder 310, thereby applying a pressing force to the workpiece by the pressing heads 330.

[0025] In the present utility model, the sealing and pressing assembly 400 is used to press and seal the inlet and outlet of the workpiece to ensure the sealing performance of the workpiece after pressing. As Figure 1 and Figure 4As shown in the figure, the sealing and pressing assembly 400 includes a sealing cylinder 410, a connecting plate 420, a fixing plate 430, a sealing head 440 and a guide rod 450. Among them, the fixing plate 430 is fixedly installed on the top surface of the bottom plate 210. One end of the guide rod 450 is fixedly connected to the connecting plate 420, and the other end is slidably connected to the fixing plate 430. The sealing head 440 is fixedly installed on the side surface of the connecting plate 420 away from the sealing cylinder 410. The sealing cylinder 410 is fixedly installed on the side of the vacuum chamber 100, and the output end of the sealing cylinder 410 extends into the vacuum chamber 100. When the sealing head 440 performs the sealing process, the output end of the sealing cylinder 410 abuts against the connecting plate 420. Through this setting, when the output end of the sealing cylinder 410 is in a non-leak detection process, it is separated from the connecting plate 420, and when the leak detection process is performed, the output end of the sealing cylinder 410 abuts against the connecting plate 420, thereby driving the connecting plate 420 to move towards the workpiece, so that the sealing head 440 seals the inlet and outlet of the workpiece. In addition, in the present utility model, in order to facilitate the separation of the sealing head 440 from the workpiece after the output end of the sealing cylinder 410 retracts, a spring 460 can be connected between the connecting plate 420 and the fixing plate 430.

[0026] In the present utility model, the inflation assembly 500 is used to inflate helium into the inflation channel so that helium can enter the inner cavity of the workpiece. The inflation assembly 500 is fixed on the opposite side of the sealing cylinder 410. Specifically, as Figure 1 shown, the inflation assembly 500 includes an inflation cylinder 510 and an inflation rod 520. A gas channel is provided inside the inflation rod 520, and the inflation rod 520 is connected to the output end of the inflation cylinder 510. One end of the inflation rod 520 is connected to a helium source, and the other end is disposed inside the vacuum chamber 100. When performing the helium leak detection procedure, it is necessary to inflate the inner cavity of the workpiece. Therefore, when inflating, the end of the inflation rod 520 is butted against the air inlet of the inflation channel. After the helium leak detection is completed, the end of the inflation rod 520 is separated from the air inlet of the inflation channel, so as to facilitate the movement of the bottom plate 210 to the outside of the vacuum chamber 100, thereby facilitating the removal of the workpiece.

[0027] The above description is only the preferred embodiment of the present application and the description of the applied technical principles. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

[0028] Except for the technical features described in the specification, the remaining technical features are known to those skilled in the art. To highlight the innovative features of the present utility model, the remaining technical features will not be elaborated herein.

Claims

1. A leak detection tool for automobile controller housing, characterized in that: It includes a vacuum box and a workpiece positioning assembly, a workpiece clamping assembly, a sealing and clamping assembly and an inflation assembly arranged in the vacuum box, wherein the workpiece clamping assembly is arranged above the workpiece positioning assembly, and the sealing and clamping assembly and the inflation assembly are respectively located on both sides of the workpiece positioning assembly; The workpiece positioning assembly includes a bottom plate and a sealing plate, the sealing plate is fixedly connected to the bottom plate, and an air-filling channel is provided in the bottom plate, the air-filling channel has an air inlet and an air outlet; a sealing pad is provided on the sealing plate, and both the sealing plate and the sealing pad are provided with an air-filling port, the air-filling port is butted and connected with the air outlet of the air-filling channel, and the air inlet of the air-filling channel is sealed and butted and connected with the air-filling assembly during inflation; The bottom plate is connected to the bottom of the vacuum box through a linear slide rail, and the linear slide rail is perpendicular to the box door of the vacuum box, so that the workpiece positioning assembly enters and exits the vacuum box through the linear slide rail.

2. The automobile controller housing leak detection tool according to claim 1, characterized in that: The workpiece clamping assembly includes a clamping cylinder, a clamping plate, a clamping head and a guide column. The clamping cylinder is fixedly installed on the top of the vacuum box, the output end of the clamping cylinder is fixedly connected to the clamping plate, and the clamping heads are evenly distributed on the bottom surface of the clamping plate. The four corners of the clamping plate are respectively slidably connected with four guide pillars fixed in the vacuum box, so that the clamping plate moves up and down along the guide pillars through the clamping cylinder.

3. The automobile controller housing leak detection tool according to claim 1, characterized in that: The sealing and pressing assembly comprises a sealing cylinder, a connecting plate, a fixing plate, a sealing head and a guide rod, wherein the fixing plate is fixedly mounted on the top surface of the bottom plate, one end of the guide rod is fixedly connected to the connecting plate, and the other end is slidably connected to the fixing plate, and the sealing head is fixedly mounted on a side surface of the connecting plate away from the sealing cylinder; The sealing cylinder is fixedly mounted on the side of the vacuum box, and the output end of the sealing cylinder extends into the vacuum box. When the sealing head performs the sealing process, the output end of the sealing cylinder abuts against the connecting plate.

4. The automobile controller housing leak detection tool according to claim 3, characterized in that: A spring is connected between the connecting plate and the fixing plate.

5. The automobile controller housing leak detection tool according to claim 3, characterized in that: The inflation assembly is arranged on the opposite side of the sealed cylinder, and the inflation assembly includes an inflation cylinder and an inflation rod, a gas passage is arranged inside the inflation rod, and the inflation rod is connected to the output end of the inflation cylinder, one end of the inflation rod is connected to a helium source, and the other end is arranged in a vacuum box; During inflation, the end of the inflation rod butts against the air inlet of the inflation channel.

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