High-voltage aluminum alloy electronic control module shell leak detection clamp with heat dissipation teeth

Abstract

The utility model discloses a high-voltage aluminum alloy electronic control module shell leak detection clamp with heat dissipation teeth. The high-voltage aluminum alloy electronic control module shell leak detection clamp comprises an upper clamp plate and a clamp bottom plate. Guide rod assemblies are arranged on the peripheries of the upper clamp plate and the clamp bottom plate. A plurality of pressing rod assemblies are arranged on the lower end face of the upper clamp plate. The bottom of the pressing rod assembly makes contact with a product. A plurality of local pressing assemblies are arranged at the position, close to the center, of the lower end face of the upper clamp plate and used for positioning and pressing the local end face and the open hole of the product. A sealing bottom plate is arranged on the clamp bottom plate; a polyformaldehyde filler is connected to the sealing bottom plate, a product with a bottom cavity is placed on the polyformaldehyde filler, and the outer contour of the bottom cavity of the product is consistent with that of the polyformaldehyde filler; the bottom end face around the product is connected with the sealing bottom plate. Through the above design, the expansion problem of the product in the leakage detection process is reasonably controlled, and meanwhile, the polyformaldehyde filler is used for filling the inner cavity of the shell, so that the collision and scratch of the product in the leakage detection process can be reduced, and the influence on the leakage detection result is reduced.

Description

Technical Field

[0001] The utility model relates to a leak detection fixture for a high-pressure aluminum alloy electronic control module housing with heat dissipation teeth, belonging to the technical field of leak detection for thin-walled housings. Background Technique

[0002] With the rise of new energy vehicles, intelligent networked vehicles and high-end vehicles, the demand for aluminum alloy electronic control module housings is also increasing continuously. This is because aluminum alloy materials have the advantages of light weight, corrosion resistance, good thermal conductivity, etc., and are suitable for manufacturing the housings of electronic control modules. Although aluminum alloy materials have many advantages, there are also some performance limitations. For example, the strength and hardness of aluminum alloy are relatively low, and it is easy to be deformed or damaged by external force impact. In addition, although the thermal conductivity of aluminum alloy is good, it is also easy to cause problems such as heat concentration and poor heat dissipation. Therefore, in product design, the product is designed to be as thin as possible to achieve a balance between performance strength and heat dissipation. At the same time, the electronic control module has strict requirements for the three-proof level and prohibits any leakage exceeding the standard. Therefore, higher challenges are posed for the leak detection of thin-walled electronic control module housings. Existing leak detection technologies are difficult to avoid problems such as inaccurate leak detection, difficult sealing, and product deformation caused by product expansion during the leak detection process of thin-walled housings. Content of the Utility Model

[0003] Aiming at the problems existing in the above-mentioned prior art, the utility model provides a leak detection fixture for a high-pressure aluminum alloy electronic control module housing with heat dissipation teeth, so as to solve the above technical problems.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is: a leak detection fixture for a high-pressure aluminum alloy electronic control module housing with heat dissipation teeth, including an upper fixture plate and a fixture bottom plate; a guide rod assembly is arranged around the upper fixture plate and the fixture bottom plate, and this guide rod assembly is used for precise positioning; a plurality of pressing rod assemblies are arranged at the lower end surface of the upper fixture plate; the bottom of the pressing rod assembly contacts the product, and it is used for pressing the periphery of the product; a plurality of local pressing assemblies are arranged at the lower end surface of the upper fixture plate near the center position, and they are used for positioning and pressing the local end surface and the opening of the product; a sealing bottom plate is arranged on the fixture bottom plate; a polyoxymethylene filler is connected to the sealing bottom plate, and a product with a bottom cavity is placed on this polyoxymethylene filler, and the bottom cavity of this product is consistent with the outer contour of the polyoxymethylene filler; the bottom end surface around the product is connected to the sealing bottom plate.

[0005] Further, 4 groups of the guide rod assemblies are arranged, and they are respectively arranged around between the upper fixture plate and the fixture bottom plate; the guide rod assembly includes a limit rod, a limit adjusting nut, a hexagonal nut and a limit seat; the limit seat is installed on the fixture bottom plate through a fixing member; the upper end of the limit rod is connected to the upper fixture plate; the bottom of the limit rod is connected with the limit seat in a matching manner.

[0006] Further, the pressing rod assembly includes a guide rod seat, a fixed-length guide rod, a pressing rod, and a pressing spring; the upper end of the guide rod seat is connected to the upper fixture plate; a pressing spring is arranged between the guide rod seat and the fixed-length guide rod, and the lower end of the fixed-length guide rod is connected to the pressing rod; the lower end of the pressing rod is located on the upper end surface around the product.

[0007] Further, the local pressing assembly includes a local end face sealing assembly and an opening pressing assembly; the local end face sealing assembly includes a support column 1, an upper backing plate, and an upper sealing plate; the upper end of the support column 1 is connected to the bottom of the upper fixture plate, and its lower end is connected to the upper backing plate; a spring member and a guide rod are arranged between the upper backing plate and the upper sealing plate;

[0008] The opening pressing assembly includes a support column 2, an upper sealing mounting bottom plate, and a top sealing rod; the upper end of the support column 2 is connected to the bottom of the upper fixture plate, and its lower end is connected to the upper sealing mounting bottom plate; the lower end of the upper sealing mounting bottom plate is fitted and connected with the top sealing rod; a spring member is arranged at the position of the upper part of the top sealing rod, and the upper end of the spring member is arranged at the bottom of the upper sealing mounting bottom plate; the upper end head of the top sealing rod passes through the through hole of the upper sealing mounting bottom plate and is connected to the guide rod end cover; a sealing ring is connected to the lower end of the top sealing rod; the sealing ring seals the local holes of the product.

[0009] Further, a protrusion is arranged at the lower end of the upper sealing plate, and the protrusion is fitted and sealed with the local groove on the upper end surface of the product.

[0010] Further, the sealing ring is sleeved on the guide post; the guide post as a whole includes a cylindrical base and a guide rod at the upper end, and its cylindrical base is arranged on the upper end surface of the sealing bottom plate; the guide rod passes through the through holes of the product and the polyoxymethylene filler, and positions the product.

[0011] Further, a plurality of limit blocks are also arranged around the sealing bottom plate; the limit blocks are used for limiting the side walls around the product.

[0012] Further, a dotting cylinder is arranged on one side of the fixture bottom plate; a marking needle is connected to one side of the dotting cylinder; a quick exhaust valve is connected to the dotting cylinder, and the dotting cylinder is used for punching a qualified mark on the qualified product.

[0013] Further, a detachable upper fixture cross plate is connected to the upper end of the upper fixture plate; the upper fixture cross plate is composed of a transverse plate and a longitudinal plate, and is fixed on the upper end surface of the upper fixture plate through a connecting piece.

[0014] Further, a sealing member is arranged on the surface of the sealing bottom plate connected to the product; the sealing member is an O-ring, and is arranged in the groove around the sealing bottom plate.

[0015] The beneficial effects of the present utility model are as follows:

[0016] 1) The clamping mechanism of this fixture adopts a combination of a rigid pressure rod and a flexible spring to reasonably control the problem of expansion of thin-walled products of the electronic control module housing during leak detection;

[0017] 2) By using cavity fillers on this fixture, specifically polyoxymethylene filler material, it can provide good internal support and pressure dispersion for the product during the clamping process. At the same time, its hardness does not exceed that of the product, which can prevent the product from being knocked and scratched during leak detection. Its certain creep resistance can stably maintain the filling volume under inflation pressure to reduce the impact on the leak detection result;

[0018] 3) Precise positioning is achieved by setting guide rods to prevent the deviation of the clamping position. During the downward pressing process, the compression spring contracts. By adjusting the spring compression amount, the clamping force can be precisely controlled;

[0019] 4) By connecting a detachable upper fixture cross plate to the upper end of the upper fixture plate, rapid replacement can be achieved, and it can be quickly removed when switching products. Description of the Drawings

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

[0021] Figure 2 is a schematic structural diagram of the present utility model;

[0022] Figure 3 is the front view of the schematic structural diagram of the present utility model;

[0023] Figure 4 is the left view of the schematic structural diagram of the present utility model.

[0024] In the figure: 1. Upper fixture plate, 2. Fixture bottom plate, 3. Guide rod assembly, 31. Limit rod, 32. Limit adjusting nut, 33. Limit seat, 4. Pressing rod assembly, 41. Guide rod seat, 42. Fixed-length guide rod, 43. Pressing rod, 44. Pressing spring, 5. Local pressing assembly, 51. Local end face sealing assembly, 511. Support column 1, 512. Upper backing plate, 513. Upper sealing plate, 52. Open-hole pressing assembly, 521. Support column 2, 522. Upper sealing installation bottom plate, 5221. Guide rod end cover, 523. Top sealing rod, 524. Sealing ring, 6. Sealing bottom plate, 61. Guide post, 62. Limit block, 63. Sealing member, 7. Dotting cylinder, 8. Quick exhaust valve, 9. Upper fixture cross plate, 10. Polyoxymethylene filler, 11. Product. Detailed Embodiments

[0025] To make the objectives, technical solutions and advantages of the present utility model clearer and more explicit, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present utility model and are not intended to limit the scope of the present utility model.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0027] As Figure 2 , Figure 3 and Figure 4 shown, a leak detection fixture for a high-voltage aluminum alloy electronic control module housing with heat dissipation teeth, characterized in that it includes an upper fixture plate 1 and a fixture bottom plate 2; a guide rod assembly 3 is provided around the upper fixture plate 1 and the fixture bottom plate 2, and the guide rod assembly 3 is used for precise positioning; a plurality of pressing rod assemblies 4 are provided at the lower end surface of the upper fixture plate 1; the bottom of the pressing rod assembly 4 contacts the product, and it is used to press the periphery of the product; a plurality of local pressing assemblies 5 are provided at the center position of the lower end surface of the upper fixture plate 1, and they are used to position and press the local end surface and the opening of the product; a sealing bottom plate 6 is provided on the fixture bottom plate 2; a polyoxymethylene filler 10 is connected to the sealing bottom plate 6, and a product 11 with a bottom cavity is placed on the polyoxymethylene filler 10, and the bottom cavity of the product 11 is consistent with the external contour of the polyoxymethylene filler 10; the bottom end surface around the product 11 is connected to the sealing bottom plate 6.

[0028] Preferably in this embodiment, 4 groups of guide rod assemblies 2 are provided, and they are respectively arranged around the upper fixture plate 1 and the fixture bottom plate 2; the guide rod assembly 2 includes a limit rod 21, a limit adjusting nut 22, a hexagonal nut and a limit seat 23; the limit seat 23 is installed on the fixture bottom plate 2 through a fixing member; the upper end of the limit rod 21 is connected to the upper fixture plate 1; the bottom of the limit rod 21 is cooperatively connected with the limit seat 23.

[0029] Preferably in this embodiment, the pressing rod assembly 4 includes a guide rod seat 41, a fixed-length guide rod 42, a pressing rod 43 and a pressing spring 44; the upper end of the guide rod seat 41 is connected to the upper fixture plate 1; a pressing spring 44 is provided between the guide rod seat 41 and the fixed-length guide rod 42, and the lower end of the fixed-length guide rod 42 is connected to the pressing rod 43; the lower end of the pressing rod 43 is located at the upper end surface around the product.

[0030] The local pressing assembly 5 includes a local end face sealing assembly 51 and an opening pressing assembly 52; the local end face sealing assembly 51 includes a support column one 511, an upper backing plate 512, and an upper sealing plate 513; the upper end of the support column one 511 is connected to the bottom of the upper fixture plate 1, and its lower end is connected to the upper backing plate 512; a spring member and a guide rod are arranged between the upper backing plate 512 and the upper sealing plate 513;

[0031] The opening pressing assembly 52 includes a support column two 521, an upper sealing mounting base plate 522, and a top sealing rod 523; the upper end of the support column two 521 is connected to the bottom of the upper fixture plate 1, and its lower end is connected to the upper sealing mounting base plate 522; the lower end of the upper sealing mounting base plate 522 is fitted with a top sealing rod 523; a spring member is arranged at the position of the upper rod of the top sealing rod 523, and the upper end of the spring member is arranged at the bottom of the upper sealing mounting base plate 522; the upper end of the top sealing rod 523 passes through the through hole of the upper sealing mounting base plate 522 and is connected to the guide rod end cover 5221; the lower end of the top sealing rod 523 is connected with a sealing ring 524; the sealing ring 524 seals the local holes of the product.

[0032] Preferably in this embodiment, a protrusion is provided at the lower end of the upper sealing plate 513, and the protrusion is fitted with the local groove on the upper end face of the product for sealing.

[0033] Preferably in this embodiment, the sealing ring 524 is sleeved on the guide post 61; the guide post 61 as a whole includes a cylindrical base and a guide rod at the upper end, and its cylindrical base is arranged on the upper end face of the sealing base plate 6; the guide rod passes through the through holes of the product and the polyoxymethylene filler 10 and positions the product.

[0034] Preferably in this embodiment, a plurality of limiting blocks 62 are further arranged around the sealing base plate 6; the limiting blocks 62 are used for limiting the side walls of the product around.

[0035] Preferably in this embodiment, a dotting cylinder 7 is arranged on one side of the fixture base plate 2; a marking needle is connected to one side of the dotting cylinder 7; a quick exhaust valve 8 is connected to the dotting cylinder 7, and the dotting cylinder 7 is used for punching a qualified mark on the qualified product.

[0036] Preferably in this embodiment, a detachable upper fixture passing plate 9 is connected to the upper end of the upper fixture plate 1; the upper fixture passing plate 9 is composed of a transverse plate and a longitudinal plate, and is fixed to the upper end face of the upper fixture plate 1 through a connecting member.

[0037] Preferably in this embodiment, a sealing member 63 is arranged on the surface of the sealing base plate 6 connected to the product 11; the sealing member 63 is an O-ring and is arranged in the groove around the sealing base plate 6.

[0038] Working principle: Under normal circumstances of equipment reset, the employee places the product in the fixture according to the shape filled with polyoxymethylene; starts the equipment with both hands, and the air cylinder of the equipment drives the upper fixture plate 1 to press down. The product is pressed tightly through the pressing rod assembly 4. After the pressing rod contacts the product, the spring deforms under force. The upper fixture plate 1 continues to press down until the guide rod assembly 3 reaches the fixed position, and the upper fixture plate 1 stops moving. There is accurate positioning by the guide rod during the pressing process to prevent the deviation of the pressing position. During the pressing process, the pressing spring 44 contracts. By adjusting the spring compression amount, the pressing force can be accurately controlled; after the product is pressed tightly by the upper fixture plate 1, the plugging plate simultaneously presses the sealing surface on the housing; after the plugging is completed, the leak detection work starts, and the product leakage is detected through the cosmo instrument. For the qualified product in the test, the dotting air cylinder 7 equipped with the quick exhaust valve 8 will make a qualified mark on the product. At the same time, the air cylinder of the equipment drives the upper fixture plate to move upward, the pressing spring expands, the pressing rod lifts, and the employee takes out the product.

[0039] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A leak detection fixture for a high-voltage aluminum alloy electronic control module housing with heat dissipation teeth, characterized in that, It includes an upper fixture plate (1) and a fixture bottom plate (2); a guide rod assembly (3) is arranged around the upper fixture plate (1) and the fixture bottom plate (2), and this guide rod assembly (3) is used for precise positioning; a plurality of pressing rod assemblies (4) are arranged at the lower end surface of the upper fixture plate (1); the bottom of the pressing rod assembly (4) contacts the product, and it is used for pressing the periphery of the product; a plurality of local pressing assemblies (5) are arranged at the position near the center of the lower end surface of the upper fixture plate (1), and they are used for positioning and pressing the local end surface and the opening of the product; a sealing bottom plate (6) is arranged on the fixture bottom plate (2); a polyoxymethylene filler (10) is connected to the sealing bottom plate (6), a product (11) with a bottom cavity is placed on the polyoxymethylene filler (10), and the bottom cavity of the product (11) is consistent with the outer contour of the polyoxymethylene filler (10); the bottom end surfaces around the product (11) are connected to the sealing bottom plate (6).

2. The leak detection fixture for the high-voltage aluminum alloy electronic control module housing with heat dissipation teeth according to claim 1, wherein There are 4 groups of the guide rod assemblies (3), and they are respectively arranged around the upper fixture plate (1) and the fixture bottom plate (2); the guide rod assembly (3) includes a limit rod (31), a limit adjusting nut (32), a hexagonal nut and a limit seat (33); the limit seat (33) is installed on the fixture bottom plate (2) through a fixing member; the upper end of the limit rod (31) is connected to the upper fixture plate (1); the bottom of the limit rod (31) is connected with the limit seat (33) in a matching manner.

3. A leak detection fixture for a high-voltage aluminum alloy electronic control module housing with heat dissipation teeth according to claim 1, characterized in that, The pressing rod assembly (4) includes a guide rod seat (41), a fixed-length guide rod (42), a pressing rod (43) and a pressing spring (44); the upper end of the guide rod seat (41) is connected to the upper fixture plate (1); a pressing spring (44) is arranged between the guide rod seat (41) and the fixed-length guide rod (42), and the lower end of the fixed-length guide rod (42) is connected to the pressing rod (43); the lower end of the pressing rod (43) is located at the upper end surface around the product.

4. A leak detection fixture for a high-voltage aluminum alloy electronic control module housing with heat dissipation teeth according to claim 1, characterized in that The local pressing assembly (5) includes a local end surface sealing assembly (51) and an opening pressing assembly (52); the local end surface sealing assembly (51) includes a support column one (511), an upper cushion plate (512), and an upper sealing plate (513); the upper end of the support column one (511) is connected to the bottom of the upper fixture plate (1), and its lower end is connected to the upper cushion plate (512); a spring member and a guide rod are arranged between the upper cushion plate (512) and the upper sealing plate (513). The opening and pressing assembly (52) includes a second support column (521), an upper sealing mounting base plate (522), and a top sealing rod (523); the upper end of the second support column (521) is connected to the bottom of the upper fixture plate (1), and its lower end is connected to the upper sealing mounting base plate (522); the lower end of the upper sealing mounting base plate (522) is cooperatively connected with a top sealing rod (523); a spring member is provided at the position of the rod near the upper end of the top sealing rod (523), and the upper end of the spring member is provided at the bottom of the upper sealing mounting base plate (522); the upper end of the top sealing rod (523) passes through the through hole of the upper sealing mounting base plate (522) and is connected to the guide rod end cover (5221); the lower end of the top sealing rod (523) is connected with a sealing ring (524); the sealing ring (524) seals the local holes of the product.

5. A leak detection fixture for a high-voltage aluminum alloy electronic control module housing with heat dissipation teeth according to claim 4, characterized in that, A protrusion is provided at the lower end of the upper sealing plate (513), and the protrusion cooperates with a local groove on the upper end surface of the product for sealing.

6. A leak detection fixture for a high-voltage aluminum alloy electronic control module housing with heat dissipation teeth according to claim 4, characterized in that, The sealing ring (524) is sleeved on the guide post (61); the guide post (61) as a whole includes a cylindrical base and a guide rod at the upper end, and its cylindrical base is provided on the upper end surface of the sealing base plate (6); the guide rod passes through the through holes of the product and the polyoxymethylene filler (10), and positions the product.

7. A leak detection fixture for a high-voltage aluminum alloy electronic control module housing with heat dissipation teeth according to claim 1, characterized in that, A plurality of limiting blocks (62) are further provided around the sealing base plate (6); the limiting blocks (62) are used to limit the side walls of the product around.

8. A leak detection fixture for a high-voltage aluminum alloy electronic control module housing with heat dissipation teeth according to claim 1, characterized in that A dotting cylinder (7) is provided on one side of the fixture base plate (2); a marking needle is connected to one side of the dotting cylinder (7); a quick exhaust valve (8) is connected to the dotting cylinder (7), and the dotting cylinder (7) is used to make a qualified mark on the qualified product.

9. A leak detection fixture for a high-voltage aluminum alloy electronic control module housing with heat dissipation teeth according to claim 1, characterized in that The upper end of the upper fixture plate (1) is connected with a detachable upper fixture cross plate (9); the upper fixture cross plate (9) is composed of a horizontal plate and a vertical plate, and is fixed on the upper end surface of the upper fixture plate (1) through a connecting member.

10. A leak detection fixture for a high-voltage aluminum alloy electronic control module housing with heat dissipation teeth according to claim 1, characterized in that, A sealing member (63) is provided on the surface of the sealing base plate (6) connected to the product (11); the sealing member (63) is an O-ring, and is arranged in the groove around the sealing base plate (6).

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