Middle shell leakage test clamp

Abstract

The utility model provides a middle housing leakage test clamp, comprising a base plate, a fixed station and an inflation pedestal fixedly installed on the base plate, a first cylinder installed on the fixed station and located right above the inflation pedestal, a leakage test clamp placed on the inflation pedestal, and a second cylinder fixed on the base plate, the first air cylinder is fixed to one side of the inflation base, the second air cylinder is fixed to one side of the inflation base, a first piston rod and a second piston rod are arranged on the first air cylinder and the second air cylinder respectively, and an elastic extrusion head and an elastic sealing piece are arranged at the end of the first piston rod and the end of the second piston rod respectively. When the leakage test fixture is detected to be qualified through the airtightness detection mechanism, the laser character carving machine carries out character carving marking on the leakage test fixture, the device is high in universality, simple in structure and convenient to use, fixing and pressing of the leakage test fixture are achieved through the first air cylinder, an air channel and a water channel of the leakage test fixture are blocked through the second air cylinder, symmetrical pressing is achieved, and angular positioning of the leakage test fixture is omitted.

Description

Technical Field

[0001] The utility model relates to the field of leak detection jigs, in particular to a leak detection jig for an intermediate housing. Background Art

[0002] There are many product series of the intermediate housing, the internal structure of the product is complex, and some series of products also require water cooling. Therefore, the water channels and oil channels cannot communicate with each other, and airtightness tests are required respectively. Therefore, it is necessary to test the sealing performance of the sealing housing on the water channels and oil channels to ensure the product quality.

[0003] Moreover, the effect of the sealing performance test of the sealing housing is also affected by the structure of the clamping device. The sealing link of the traditional sealing performance test equipment for the sealing housing is not reasonably designed, resulting in leakage at the sealing part after the sealing housing is clamped, leading to misjudgment and affecting the qualified rate of the product. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a leak detection jig for an intermediate housing, which has strong versatility, simple structure and convenient use. The leak detection jig is fixed and pressed through a first air cylinder, and the air channel and water channel of the leak detection jig are respectively blocked by a second air cylinder, and symmetrically pressed, omitting its angular positioning.

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

[0006] A leak detection jig for an intermediate housing, characterized in that: it includes a bottom plate, a fixed table and an inflation base for inflating the main body of the leak detection jig are fixedly installed on the bottom plate, a first air cylinder is installed on the fixed table, the first air cylinder is directly above the inflation base, the main body of the leak detection jig is placed on the inflation base, the inflation base is connected to an inflation device, and a second air cylinder fixed on the bottom plate is also included. The second air cylinder is provided with at least three and is respectively fixed on one side of the inflation base. First piston rods and second piston rods are respectively arranged on the first air cylinder and the second air cylinder, and elastic extrusion heads and elastic seals are respectively arranged at the ends of the first piston rod and the second piston rod. When the main body of the leak detection jig is placed on the inflation base, the first air cylinder drives the first piston rod to press vertically downward, and the upper end surface of the main body of the leak detection jig is pressed tightly through the elastic extrusion head for fixation. The second air cylinder drives the second piston rod to move horizontally, and the air channel and water channel on the side surface of the main body of the leak detection jig are blocked and pressed tightly through the elastic seal. A fixed bracket and an airtight detection mechanism are also included. The airtight detection mechanism is connected to the inflation device. After the inflation device inflates the leak detection jig through the inflation base, the airtight detection mechanism detects the air pressure change of the inflation device. A laser engraving machine is fixed on the fixed bracket. After the air pressure of the inflation device is detected to be qualified by the airtight detection mechanism, the laser engraving machine engraves and marks the main body of the leak detection jig.

[0007] Further: It further includes fixing seats fixed on the bottom plate. There are three fixing seats. Two fixing seats are relatively fixed on both sides of the inflatable base, and one fixing seat is relatively fixed to the fixing table. Mounting holes are provided on the fixing table, and a second cylinder is installed in the mounting holes. Second cylinders are also respectively installed on the fixing seats.

[0008] Further: The inflatable base is connected to an inflating device. Inflating holes are provided on the inflatable base. After the leak detection fixture body is placed on the inflatable base and fixed and sealed, the inflatable base inflates the leak detection fixture body through the inflating holes.

[0009] Further: The elastic seal is a rubber gasket.

[0010] Further: The elastic extrusion head is a rubber extrusion head.

[0011] In the above structure: The leak detection fixture for the middle shell proposed by the present utility model includes a bottom plate. A fixing table and an inflatable base for inflating the leak detection fixture are fixedly installed on the bottom plate. The leak detection fixture is placed on the inflatable base. A first cylinder is installed on the fixing table. After the leak detection fixture is placed on the inflatable base, the first cylinder is started. The first cylinder controls the first piston rod to vertically descend, and the elastic extrusion head on the first piston rod presses tightly against the leak detection fixture. Since the elastic extrusion head is made of rubber material and has a certain amount of deformation, it will not damage the surface of the product. The cylinder diameter of the first cylinder is slightly larger than that of the second cylinder on the side, which can ensure that the leak detection fixture does not move in position during the test. Second cylinders are provided around the inflatable base. After the first cylinder presses tightly and fixes the leak detection fixture, the second cylinder is started. The second cylinder controls the second piston rod to horizontally move, and the elastic seal on the second piston rod blocks the air channels and water channels on the leak detection fixture and symmetrically presses them tightly. This design can omit angular positioning.

[0012] Among them, the inflatable base is connected to an inflating device for inflating the leak detection fixture. The airtight detection mechanism is connected to the inflating device for detecting the air pressure of the inflating device. Inflating holes for inflating the leak detection fixture are provided on the inflatable base. After the leak detection fixture is placed on the inflatable base and fixed and sealed, the staff inflates the leak detection fixture through the inflating holes on the inflatable base. After inflation is completed, leak detection can be carried out through the airtight detection mechanism. Specifically, when the inflating device finishes inflating, the airtight detection mechanism is started, and the air pressure of the inflating device is detected through the airtight detection mechanism to observe whether the air pressure changes, thereby realizing leak detection.

[0013] A fixing bracket is also provided, and a laser engraving machine is fixed on the fixing bracket. When the leak detection fixture passes the detection by the airtight detection mechanism, the laser engraving machine engraves and marks the leak detection fixture.

[0014] There are fixed seats for installing the second cylinder fixed on the bottom plate. There are three fixed seats. Two fixed seats are relatively fixed on both sides of the inflatable base, and one fixed seat is relatively fixed with the fixed table. There are installation holes on the fixed table, and a second cylinder is installed through the installation holes. Second cylinders are also respectively installed on the fixed seats. There are a total of four second cylinders, and the four second cylinders are fixed in pairs opposite to each other.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] This application has strong versatility. Leak test jigs with different diameters correspond to different product inner diameters for positioning, ensuring the accurate position of the leak test jig, and it is replaceable according to needs. The test air pressure is filled into the product from the inflatable base for pressure testing.

[0017] The leak test jig in this application is clamped by five cylinders in the front and back, left and right, and at the top to achieve fixation and the sealing effect is achieved through an elastic seal, so that the leak test jig does not move during testing, and it is ensured that the test air pressure meets the test requirements. The first cylinder plays a major clamping role, and the cylinder diameter of the first cylinder is slightly larger than that of the second cylinder to ensure that the product does not move in position during the test. The second cylinders in the front and back, and left and right respectively block the air passage and water passage of the product and are symmetrically clamped, so angular positioning is omitted.

[0018] The clamping of the leak test jig in this application mainly relies on the first cylinder at the top for clamping. The plug at the front end of the first piston rod uses an elastic extrusion head, which has a certain amount of deformation and will not damage the surface of the product.

[0019] After the leak test jig in this application passes the test, the laser printer works, and laser engraving is performed on its surface through a stylus for marking, which is convenient for the staff to identify. The position of the laser printer is adjustable according to the shape of the leak test jig. Description of the Drawings

[0020] Figure 1 is the overall structural schematic diagram of the present utility model;

[0021] Figure 2 is the schematic diagram of installing the leak test jig of the present utility model.

[0022] List of Reference Numerals:

[0023] 1. Bottom plate; 2. Fixed table; 3. Inflatable base; 4. First cylinder; 5. First piston rod; 6. Elastic extrusion head; 7. Second cylinder; 8. Second piston rod; 9. Elastic seal; 10. Fixed seat; 11. Fixed bracket; 12. Laser engraving machine; 13. Leak test jig body. Detailed Embodiment

[0024] The present utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0025] As Figure 1-2 shown, the present utility model provides a leak detection fixture for an intermediate housing, including a bottom plate 1, on which a fixed table 2 and an inflation base 3 for inflating the leak detection fixture main body 13 are fixedly installed. A first cylinder 4 is installed on the fixed table 2, and the first cylinder 4 is directly above the inflation base 3. The inflation base 3 is provided with the leak detection fixture main body 13. The inflation base 3 is connected to an inflation device. It also includes a second cylinder 7 fixed on the bottom plate 1. There are at least three second cylinders 7, which are respectively fixed on one side of the inflation base 3. First piston rods 5 and second piston rods 8 are respectively arranged on the first cylinder 4 and the second cylinder 7. Elastic extrusion heads 6 and elastic seals 9 are respectively arranged at the ends of the first piston rod 5 and the second piston rod 8. When the leak detection fixture main body 13 is placed on the inflation base 3, the first cylinder 4 drives the first piston rod 5 to press down vertically, and the upper end surface of the leak detection fixture main body 13 is fixed by the elastic extrusion head 6. The second cylinder 7 drives the second piston rod 8 to move horizontally, and the air ducts and water channels on the side of the leak detection fixture main body 13 are blocked and tightened by the elastic seal 9. It further includes a fixed bracket 11 and an airtight detection mechanism. The airtight detection mechanism is connected to the inflation device. After the inflation device inflates the leak detection fixture main body 13 through the inflation base 3, the airtight detection mechanism detects the air pressure change of the inflation device. A laser engraving machine 12 is fixed on the fixed bracket 11. After the inflation device passes the airtight detection by the airtight detection mechanism, the laser engraving machine 12 engraves and marks the leak detection fixture main body 13.

[0026] It also includes fixed seats 10 fixed on the bottom plate 1. There are three fixed seats 10. Two fixed seats 10 are relatively fixed on both sides of the inflation base 3, and one fixed seat 10 is relatively fixed to the fixed table 2. An installation hole is provided on the fixed table 2, and the second cylinder 7 is installed in the installation hole. The second cylinder 7 is also respectively installed on the fixed seats 10.

[0027] The inflation base 3 is connected to the inflation device. An inflation hole is provided on the inflation base 3. After the leak detection fixture main body 13 is placed on the inflation base 3 and fixed and sealed, the inflation base 3 inflates the leak detection fixture main body 13 through the inflation hole.

[0028] The elastic seal 9 is a rubber seal pad.

[0029] The elastic extrusion head 6 is a rubber extrusion head.

[0030] The leak detection fixture for the intermediate housing proposed in this application includes a bottom plate 1. A fixed platform 2 and an inflation base 3 for inflating the main body 13 of the leak detection fixture are fixedly installed on the bottom plate 1. The leak detection fixture 13 is placed on the inflation base 3. A first cylinder 4 is installed on the fixed platform 2. After the leak detection fixture main body 13 is placed on the inflation base 3, the first cylinder 4 is started, and the first cylinder 4 controls the first piston rod 5 to vertically descend. The elastic extrusion head 6 on the first piston rod 5 presses tightly against the leak detection fixture main body 13. Since the elastic extrusion head 6 is made of rubber material and has a certain deformation amount, it will not damage the product surface. The cylinder diameter of the first cylinder 4 is slightly larger than that of the second cylinder 7 on the side, which can ensure that the leak detection fixture main body 13 does not move in position during the test. Second cylinders 7 are arranged around the inflation base 3. After the first cylinder 4 presses tightly and fixes the leak detection fixture main body 13, the second cylinders 7 are started. The second cylinders 7 control the second piston rods 8 to move horizontally. The elastic seals 9 on the second piston rods 8 block the air channels and water channels on the leak detection fixture main body 13 and symmetrically press them tightly. This design can omit angular positioning.

[0031] Among them, the inflation base 3 is connected to an inflation device for inflating the main body 13 of the leak detection fixture. The airtight detection mechanism is connected to the inflation device for detecting the air pressure of the inflation device. An inflation hole for inflating the main body 13 of the leak detection fixture is provided on the inflation base 3. When the leak detection fixture main body 13 is placed on the inflation base 3 and fixed and sealed, the staff inflates the main body 13 of the leak detection fixture through the inflation hole on the inflation base 3. After inflation is completed, leak detection can be carried out through the airtight detection mechanism. Specifically, when the inflation device finishes inflation, the airtight detection mechanism is started, and the air pressure of the inflation device is detected through the airtight detection mechanism to observe whether the air pressure changes, thereby realizing leak detection.

[0032] A fixed bracket 11 is also provided, and a laser engraving machine 12 is fixed on the fixed bracket 11. When the leak detection fixture main body 13 passes the detection by the airtight detection mechanism, the laser engraving machine 12 engraves and marks the leak detection fixture main body 13.

[0033] Fixed seats 10 for installing the second cylinders 7 are fixed on the bottom plate 1. There are three fixed seats 10. Two fixed seats 10 are relatively fixed on both sides of the inflation base 3, and one fixed seat 10 is relatively fixed to the fixed platform 2. An installation hole is provided on the fixed platform 2, and a second cylinder 7 is installed through the installation hole. Second cylinders 7 are also installed on the fixed seats 10 respectively, with a total of four second cylinders 7, and the four second cylinders 7 are fixed in pairs.

[0034] Compared with the prior art, the beneficial effects of the present utility model are:

[0035] The present application has strong versatility. Leak detection fixture bodies 13 with different diameters correspond to different inner diameters of products for positioning to ensure the accurate position of the leak detection fixture bodies 13, and they are replaceable as needed. The test air pressure is filled into the product from the inflation base 3 for pressure testing.

[0036] In the present application, the leak detection fixture body 13 is clamped by five cylinders in the front-back, left-right, and top directions to achieve fixation and the sealing function is realized through the elastic seal 9, so that the leak detection fixture body 13 does not move during testing and ensures that the test air pressure meets the test requirements. The first cylinder 4 plays a major clamping role, and the cylinder diameter of the first cylinder 4 is slightly larger than that of the second cylinder 7 to ensure that the product does not move in position during the test. The second cylinders 7 in the front-back and left-right directions respectively block the air passage and water passage of the product and clamp symmetrically, so angular positioning is omitted.

[0037] In the present application, the clamping of the leak detection fixture body 13 mainly relies on the first cylinder 4 at the top for clamping. The plug at the front end of the first piston rod 5 adopts an elastic extrusion head 6 with a certain amount of deformation, which will not damage the surface of the product.

[0038] After the leak detection fixture body 13 in the present application passes the test, the laser printer works, and laser engraving is performed on its surface through a stylus for marking to facilitate identification by the staff. The position of the laser printer is adjustable according to the shape of the leak detection fixture body 13.

[0039] The above are only the preferred embodiments of the present invention and do not limit the present invention in any other form. Any modification or equivalent change made according to the technical essence of the present invention still falls within the scope protected by the present invention.

Claims

1. Leakage testing fixture for the middle housing, characterized in that: It includes a bottom plate (1), on which a fixed platform (2) and an inflation base (3) for inflating the leak detection fixture main body (13) are fixedly installed. A first cylinder (4) is installed on the fixed platform (2), and the first cylinder (4) is directly above the inflation base (3). The leak detection fixture main body (13) is placed on the inflation base (3), and the inflation base (3) is connected to an inflation device. It also includes a second cylinder (7) fixed on the bottom plate (1). There are at least three second cylinders (7) and they are respectively fixed on one side of the inflation base (3). A first piston rod (5) and a second piston rod (8) are respectively arranged on the first cylinder (4) and the second cylinder (7). Elastic extrusion heads (6) and elastic seals (9) are respectively arranged at the ends of the first piston rod (5) and the second piston rod (8). When the leak detection fixture main body (13) is placed on the inflation base (3), the first cylinder (4) drives the first piston rod (5) to press down vertically, and the upper end face of the leak detection fixture main body (13) is fixed by being pressed tightly by the elastic extrusion head (6). The second cylinder (7) drives the second piston rod (8) to move horizontally, and the air channels and water channels on the side of the leak detection fixture main body (13) are blocked and pressed tightly by the elastic seal (9). It also includes a fixed bracket (11) and an airtight detection mechanism. The airtight detection mechanism is connected to the inflation device. After the inflation device inflates the leak detection fixture main body (13) through the inflation base (3), the airtight detection mechanism detects the air pressure change of the inflation device. A laser engraving machine (12) is fixed on the fixed bracket (11). When the air pressure of the inflation device is detected to be qualified by the airtight detection mechanism, the laser engraving machine (12) engraves and marks the leak detection fixture main body (13).

2. The leak detection fixture for the intermediate housing according to claim 1, characterized in that: It also includes fixed seats (10) fixed on the bottom plate (1). There are three fixed seats (10). Two fixed seats (10) are relatively fixed on both sides of the inflation base (3), and one fixed seat (10) is relatively fixed to the fixed platform (2). An installation hole is arranged on the fixed platform (2), and the second cylinder (7) is installed in the installation hole. The second cylinder (7) is also respectively installed on the fixed seats (10).

3. The leak detection fixture for the middle housing according to claim 1, characterized in that: An inflation hole is arranged on the inflation base (3). After the leak detection fixture main body (13) is placed on the inflation base (3) and fixed and sealed, the inflation base (3) inflates the leak detection fixture main body (13) through the inflation hole.

4. The leak detection fixture for the intermediate housing according to claim 1, wherein: The elastic seal (9) is a rubber gasket.

5. The leak testing fixture for the intermediate housing according to claim 1, wherein: The elastic extrusion head (6) is a rubber extrusion head.

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