Air tightness automatic detection tool for valve chamber cover

Abstract

The utility model relates to the technical field of air tightness detection of a valve chamber cover, in particular to an air tightness automatic detection tool of a valve chamber cover, which comprises a supporting bottom plate, two supporting rods are fixedly connected to the left part and the right part of the upper end of the supporting bottom plate respectively, and the upper ends of the four supporting rods are fixedly connected with an upper supporting plate together; a supporting plate is fixedly connected to the upper end of the supporting bottom plate, two clamping air cylinders are fixedly connected to the right portion of the upper end of the supporting bottom plate, a clamping groove is formed in the middle of the right end of the upper supporting plate in a penetrating mode, a stroke-adjustable air cylinder is fixedly connected to the inner groove wall of the clamping groove in a penetrating mode, and a valve chamber cover assembly is connected to the upper end of the supporting plate in a penetrating mode. According to the air tightness automatic detection tool for the valve chamber cover, the three placing grooves are arranged on the valve chamber cover assembly, and the sealing frames are fixedly connected to the ends, penetrating through the upper supporting plate, of the three groups of transverse standard air cylinders at the right part, so that the bolt tightening state when the valve chamber cover is loaded is simulated.

Description

Technical Field

[0001] This utility model relates to the field of valve cover airtightness testing technology, and in particular to an automatic valve cover airtightness testing fixture. Background Technology

[0002] The valve cover is the uppermost sealing component of a car engine, used to seal the valves and valve drive mechanism, preventing lubricant leakage and dust ingress, while also serving a heat dissipation function. During the manufacturing process of the valve cover, an airtightness testing fixture is required for airtightness testing. A traditional automatic airtightness testing fixture for valve covers has the following technical problems:

[0003] 1. The existing automatic valve cover airtightness testing fixture cannot simulate the bolt tightening state when the valve cover is installed on the vehicle, thus affecting the testing effect of the automatic valve cover airtightness testing fixture; 2. The existing automatic valve cover airtightness testing fixture requires operators to manually seal any possible leaks, and cannot automate the sealing process, increasing the workload of employees. Therefore, we have introduced a new automatic valve cover airtightness testing fixture. Utility Model Content

[0004] The main objective of this invention is to provide an automatic valve cover airtightness testing fixture, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An automatic valve cover airtightness testing fixture includes a support base plate. Two support rods are fixedly connected to the upper left and upper right sides of the support base plate. An upper support plate is fixedly connected to the upper ends of the four support rods. A support plate is fixedly connected to the upper end of the support base plate. Two clamping cylinders are fixedly connected to the upper right side of the support base plate. A slot is formed through the middle of the right end of the upper support plate. An adjustable stroke cylinder is fixedly connected to the inner wall of the slot. A valve cover assembly is connected to the upper end of the support plate.

[0007] The upper support plate is fixedly connected to the lower right side of the limit frame, which is sleeved with the stroke adjustable cylinder. The front middle of the support plate has an air inlet. Three sets of horizontal standard cylinders are interspersed on the upper top of the upper support plate. Two aluminum alloy mini cylinders are fixedly connected to the middle of the upper top of the upper support plate.

[0008] Preferably, the valve cover assembly has several connecting holes at both the front and rear of its upper end, and three horizontal placement slots at the upper end of the valve cover assembly. The output end of the stroke-adjustable cylinder is fixedly connected to a connecting end. One end of each of the standard cylinders passing through the upper support plate is fixedly connected to a pressure rod. The upper end of the upper support plate is fixedly connected to three sets of horizontal fixing blocks, and the three sets of horizontal fixing blocks are respectively fixedly sleeved with the three sets of horizontal standard cylinders.

[0009] Preferably, the seven standard cylinders in the middle are divided into four groups, and the two standard cylinders in the three groups on the right are fixedly connected to a sealing frame at one end of the upper support plate.

[0010] Preferably, the three sealing frames are respectively interleaved with the three placement slots.

[0011] Preferably, several of the pressure rods are respectively connected to several connecting holes.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. A valve cover assembly is inserted into the inner frame of the support plate. The valve cover assembly has three placement slots and several connection holes. Sealing frames are fixedly connected to the output ends of the two standard cylinders in the middle of the three sets of transverse cylinders. After the three injection-molded valve cover parts are placed into the three placement slots, the output ends of the two standard cylinders in the middle of the three sets of transverse cylinders push the three sealing frames to limit and fix the three valve covers, thereby simulating the bolt tightening state when the valve cover is installed on the vehicle, which facilitates the subsequent air tightness test process.

[0014] 2. By fixing pressure rods to the output ends of several standard cylinders in the front and rear transverse directions, the two sets of standard cylinders push the two sets of pressure rods in the transverse direction, so that the two sets of pressure rods are connected to several connecting holes, thus blocking all possible air leaks during the connection between the valve cover and the tooling, leaving only one air inlet for air intake, reducing the workload of employees and saving time and effort. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an automatic valve cover airtightness detection fixture according to the present invention;

[0016] Figure 2 This is a front view of the overall structure of an automatic valve cover airtightness detection fixture according to the present invention;

[0017] Figure 3This is a side view of the overall structure of an automatic valve cover airtightness detection fixture according to the present invention.

[0018] Figure 4 This is a top view of the overall structure of an automatic valve cover airtightness detection fixture according to the present invention.

[0019] In the diagram: 1. Support base plate; 2. Support plate; 3. Air inlet; 4. Clamping cylinder; 5. Support rod; 6. Upper support plate; 7. Slot; 8. Limit frame; 9. Stroke adjustable cylinder; 10. Standard cylinder; 11. Aluminum alloy mini cylinder; 12. Pressure rod; 13. Fixing block; 14. Valve cover assembly; 15. Sealing frame; 16. Connecting end; 17. Placement slot; 18. Connecting hole. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do 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, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] An automatic valve cover airtightness testing fixture includes a support base plate 1. Two support rods 5 are fixedly connected to the upper left and upper right sides of the support base plate 1. An upper support plate 6 is fixedly connected to the upper ends of the four support rods 5. A support plate 2 is fixedly connected to the upper end of the support base plate 1. Two clamping cylinders 4 are fixedly connected to the upper right side of the support base plate 1. A slot 7 is opened through the middle of the right side of the upper support plate 6. An adjustable stroke cylinder 9 is fixedly connected to the inner wall of the slot 7. A valve cover assembly 14 is connected to the upper end of the support plate 2.

[0025] In this embodiment, the valve cover assembly 14 has several connecting holes 18 at the front and rear of the upper end. The valve cover assembly 14 has three horizontal placement slots 17 at the upper end. The output end of the stroke adjustable cylinder 9 is fixedly connected to a connecting end 16. Several standard cylinders 10 are fixedly connected to a pressure rod 12 at one end of the upper support plate 6. Three sets of horizontal fixing blocks 13 are fixedly connected to the upper end of the upper support plate 6, and the three sets of horizontal fixing blocks 13 are respectively fixedly sleeved with the three sets of horizontal standard cylinders 10.

[0026] The above scheme allows for the placement and support of three machined valve cover parts in three separate slots to facilitate subsequent airtightness testing. Three sets of horizontal fixing blocks 13 are respectively fixedly connected to three sets of horizontal standard cylinders 10, enabling the positioning of the three sets of horizontal standard cylinders 10 and improving stability.

[0027] In this embodiment, a limiting frame 8 is fixedly connected to the lower right side of the upper support plate 6. The limiting frame 8 is sleeved with the stroke adjustable cylinder 9. An air inlet 3 is opened in the middle of the front end of the support plate 2. Three sets of horizontal standard cylinders 10 are inserted and connected to the upper end of the upper support plate 6. Two aluminum alloy mini cylinders 11 are fixedly connected to the middle of the upper end of the upper support plate 6. The seven standard cylinders 10 in the middle are divided into four groups, and the two horizontal standard cylinders 10 in the three groups on the right are fixedly connected to a sealing frame 15 at one end of the upper support plate 6. The three sealing frames 15 are respectively inserted and connected to three placement slots 17. Several pressure rods 12 are respectively inserted and connected to several connecting holes 18.

[0028] The above scheme involves supporting and limiting the stroke adjustable cylinder 9 using the limiting frame 8. Several standard cylinders 10 at the front and rear horizontal positions push several pressure rods 12 at the front and rear, respectively, causing them to interlock with two sets of horizontal connecting holes 18. This automates the process of sealing all potential leaks during the connection between the valve cover and the tooling, leaving only one air inlet 3 for air intake. This reduces the workload of employees and saves time and effort. Furthermore, the output ends of the two standard cylinders 10 in the middle three sets of horizontal positions continue to push the three sealing frames 15, thus limiting, fixing, and sealing the three valve covers and improving stability.

[0029] It should be noted that this utility model is an automatic valve cover airtightness testing fixture. During use, the injection-molded valve cover parts are first placed in the three placement slots 17 on the valve cover assembly 14. This provides a basic positioning for subsequent fixing and testing. Then, the two standard cylinders 10 in the middle of the three sets of horizontal sections begin to work, their outputs pushing the three sealing frames 15. The sealing frames 15 move under the action of the standard cylinders 10, limiting, fixing, and sealing the three valve covers placed in the placement slots 17. This ensures the valve cover's stable position during testing, preventing it from shaking and affecting the test results. It also creates a relatively enclosed space for airtightness testing. Several standard cylinders 10 in the front and rear sections work together, each with a fixed pressure rod 12 connected to its output. When these standard cylinders 10 are activated, they push several pressure rods 12 in the front and rear sections respectively. The pressure rods 12, pushed by the standard cylinders 10, interact with the two sets of horizontal sections... The fixture is connected by several interlocking holes 18. In this way, the fixture can automatically seal all possible leaks during the connection between the valve cover and the fixture, leaving only one air inlet 3 for air intake. This design achieves a complete seal of the valve cover, greatly reducing the workload of manually finding and sealing leaks, and improving the accuracy and efficiency of the test. The fixture simulates the bolt tightening state when the valve cover is installed on the vehicle, making the test environment closer to the actual use situation, thereby improving the reliability of the test results. Moreover, the fixture is designed with a movable structure at the pressing position. With the help of equipment control, the airtightness test is automated. Monitoring parameters such as pressure and time are set in advance in the airtightness instrument. After the equipment is started, the entire fixture system will run automatically according to the preset program to perform airtightness tests on the three valve cover components. This automated operation not only improves the work efficiency during production, but also reduces the impact of human factors on the test results, which helps to improve product quality.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An automatic valve cover airtightness testing fixture, comprising a support base plate (1), characterized in that: The upper left and upper right sides of the support base plate (1) are fixedly connected to two support rods (5), and the upper ends of the four support rods (5) are fixedly connected to an upper support plate (6). The upper end of the support base plate (1) is fixedly connected to a support plate (2). The upper right side of the support base plate (1) is fixedly connected to two clamping cylinders (4). The middle right side of the upper support plate (6) is provided with a slot (7). The inner wall of the slot (7) is fixedly connected to a stroke adjustable cylinder (9). The upper end of the support plate (2) is connected to a valve cover assembly (14). The upper support plate (6) is fixedly connected to the right side of the lower end of the limit frame (8), the limit frame (8) is sleeved with the stroke adjustable cylinder (9), the front end of the support plate (2) is provided with an air inlet (3), the upper end of the upper support plate (6) is connected with three sets of horizontal standard cylinders (10), and the upper end of the upper support plate (6) is fixedly connected with two aluminum alloy mini cylinders (11).

2. The automatic valve cover airtightness testing fixture according to claim 1, characterized in that: The valve cover assembly (14) has several connecting holes (18) at the front and rear of its upper end. The valve cover assembly (14) has three horizontal placement slots (17) at its upper end. The output end of the adjustable stroke cylinder (9) is fixedly connected to a connecting end (16). One end of each of the standard cylinders (10) passing through the upper support plate (6) is fixedly connected to a pressure rod (12). The upper end of the upper support plate (6) is fixedly connected to three sets of horizontal fixing blocks (13), and the three sets of horizontal fixing blocks (13) are respectively fixedly sleeved with the three sets of horizontal standard cylinders (10).

3. The automatic valve cover airtightness testing fixture according to claim 1, characterized in that: The seven standard cylinders (10) in the middle are divided into four groups, and the two standard cylinders (10) in the three groups on the right are fixedly connected to a sealing frame (15) at one end of the upper support plate (6).

4. The automatic valve cover airtightness testing fixture according to claim 3, characterized in that: The three sealing frames (15) are respectively interlocked with the three placement slots (17).

5. The automatic valve cover airtightness testing fixture according to claim 2, characterized in that: Several pressure rods (12) are respectively inserted and connected to several connecting holes (18).

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