Air tightness test tool for hot melting self-tapping screw

Abstract

The utility model discloses an air tightness test tool for a hot-melting self-tapping screw, and belongs to the field of processing detection equipment for self-tapping screw products. According to the testing tool, a pressing mechanism is arranged on a base; a test plate is arranged on the base and is provided with a self-tapping screw to be tested; the testing cover barrel is located at the upper end of the testing plate and pressed by the pressing mechanism, the end of the self-tapping screw to be tested is located in the testing cover barrel, a connecting nozzle and an air pressure testing assembly are arranged on the side wall of the testing cover barrel, the air pressure testing assembly comprises an air compressor and a tester, and the air compressor is connected with the connecting nozzle and is inflated and deflated. And a test probe of the tester is positioned in the test cover barrel. Through the structural design of the airtight test tool, the airtight effect of the tool is ensured, the precise volume precision is achieved, and the design effect meeting the product test requirement is achieved. Through the ingenious design, the design difficulty of the test tool is reduced, the connection volume of a product is considered by the tool, and the sealing effect of the tool in the test process is also ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the processing detection equipment field of self -tapping screw especially relates to a hot melt self -tapping screw's air tightness test frock. BACKGROUND

[0002] With the sustained growth of new energy vehicles, the sealing performance requirement of new energy vehicle battery pack is more and more high to the sealing requirement of fastener connection after connecting battery pack.

[0003] Hot melt self -tapping screw is widely used in the installation of battery pack. However, due to the small volume of hot melt self -tapping screw product, the product itself needs to be tested for air tightness for the product with strict sealing performance, especially air tightness. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a hot melt self -tapping screw's air tightness test frock.

[0005] The utility model discloses a hot melt self -tapping screw's air tightness test frock, including:

[0006] The base is provided with a pressing mechanism on the base;

[0007] The tray is arranged on the base, and the tray is provided with a clearance hole;

[0008] The test plate is arranged on the tray, and the test plate is provided with a clearance hole;

[0009] The test cover barrel is a hollow structure, and the lower end of the test cover barrel is provided with an opening, the test cover barrel is located on the upper end of the test plate, and the pressing mechanism is pressed, the end of the test self -tapping screw is located in the test cover barrel, and the connecting mouth is arranged on the side wall of the test cover barrel; and

[0010] The air pressure test assembly includes an air compressor and a tester, the air compressor is connected with the connecting mouth and carries out inflation and deflation, and the test probe of the tester is located in the test cover barrel.

[0011] Further, the test plate is provided with a threaded hole, and the threaded hole is matched with the test self -tapping screw. The size of the threaded hole is fixed, and the test self -tapping screw can be tested after being assembled.

[0012] Further, the internal volume of the test cover barrel is 100ml. It is fixedly provided with 100ml for subsequent data testing. Specifically, the inner diameter of the inside can be set to 40mm, the internal height is set to 80mm, and the thickness of the cover barrel is 10mm. By limiting the size, the internal volume can be stabilized at about 100ml, and the air pressure test can be more rapid and stable during subsequent inflation.

[0013] Further, the lower end of the test cover barrel is provided with a sealing ring. By providing the sealing ring, the air tightness of the pressing process can be ensured.

[0014] Further, the lower end of the test cover barrel is provided with a mounting groove, and the mounting groove is provided with a sealing ring. That is to ensure the stable installation of the sealing ring.

[0015] Further, the base is provided with a pressing mechanism through a cushion block. The height of the pressing mechanism can be adjusted according to actual needs.

[0016] Further, the pressing mechanism is a quick clamp. In order to save costs, a quick clamp is selected, and the quick clamp is horizontal.

[0017] Further, the pressing mechanism is any one of a vertically arranged air cylinder or an electric cylinder. In order to realize automatic pressing and ensure stable pressing, the pressing mechanism can be set as an electric device.

[0018] Further, a pattern is arranged on the upper end face of the test cover barrel. It can increase the friction force and ensure the pressing effect.

[0019] Further, the lower side of the base is provided with a foot pad. It can be moved at any time and can protect during movement.

[0020] Further, the tray is fixed on the base by screws. It can ensure the accuracy of the position during testing.

[0021] Further, the size of the test plate is 70mm*70mm. By limiting the size, subsequent testing can be facilitated.

[0022] Further, the test plate is a single-layer plate or a multi-layer plate. The multi-layer plate can be made of the same material or different materials, such as the combination of metal and non-metal, or the combination of steel plate and aluminum alloy, which can be adjusted and tested according to actual needs.

[0023] The utility model discloses a beneficial technical effect is: through to the airtight test frock structure design, guarantee frock itself's airtight effect and have accurate volume accuracy, reach the design effect of satisfying product test requirement. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 It is the three -dimensional schematic view of hot melt self -drilling nail's airtight test frock.

[0025] Fig. 2 It is the schematic diagram of testing cover bucket.

[0026] Fig. 3 It is the working schematic diagram when testing.

[0027] Among them:

[0028] 1, base, 11, foot pad,

[0029] 2, pressing mechanism,

[0030] 3, tray, 31, let - go hole,

[0031] 4, test board,

[0032] 5, test cover bucket, 51, sealing ring,

[0033] 6, connecting mouth,

[0034] 7, air pressure test assembly, 71, air compressor, 72, tester,

[0035] 8, cushion block. DETAILED DESCRIPTION

[0036] In order to more clearly understand the technical means of the utility model, and can be implemented according to the content of the specification, the specific embodiment of the utility model is further described in detail below, the following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0037] Referring to the hot melt self -drilling nail's airtight test frock shown in the drawing, Figs. 1-3 Including:

[0038] Base 1, base 1 is provided with pressing mechanism 2;

[0039] Tray 3, tray 3 is arranged on base 1, and let - go hole 31 is arranged on tray 3;

[0040] The test plate 4 is arranged on the tray 3, and the self-tapping screws to be tested are arranged through and detachably on the test plate 4, and the penetrating ends of the self-tapping screws to be tested are located in the accommodation holes 31;

[0041] The test cover barrel 5 is a hollow structure, and the lower end of the test cover barrel 5 is arranged in an open manner, the test cover barrel 5 is located at the upper end of the test plate 4, and the pressing mechanism 2 presses it, the end of the self-tapping screw to be tested is located in the test cover barrel 5, and the connecting nozzle 6 is arranged on the side wall of the test cover barrel 5; and

[0042] The air pressure test assembly 7 includes an air compressor 71 and a tester 72, the air compressor 71 is connected with the connecting nozzle 6 and performs air charging and discharging, and the test probe of the tester 72 is located in the test cover barrel 5.

[0043] Further, the test plate 4 is provided with a threaded hole, and the threaded hole is arranged in cooperation with the self-tapping screw to be tested. The size of the threaded hole is fixed, and the self-tapping screw to be tested can be tested after being assembled.

[0044] Further, the internal volume of the test cover barrel 5 is 100ml. It is fixedly arranged as 100ml for subsequent data testing. Specifically, the inner diameter of the inside can be set to 40mm, the internal height is set to 80mm, and the thickness of the cover barrel is 10mm. By limiting the size in this way, the internal volume can be stabilized at about 100ml, and the air pressure test can be more rapid and stable during subsequent inflation.

[0045] Further, the lower end of the test cover barrel 5 is provided with a sealing ring 51. Through the arrangement of the sealing ring 51, the air tightness of the pressing process can be guaranteed.

[0046] Further, the lower end of the test cover barrel 5 is provided with a mounting groove, and the sealing ring 51 is arranged in the mounting groove. That is, the stable installation of the sealing ring 51 is guaranteed.

[0047] Further, the base 1 is provided with the pressing mechanism 2 through the cushion block 8. The height of the pressing mechanism 2 can be adjusted according to actual needs.

[0048] Further, the pressing mechanism 2 is a quick clamp. In order to save costs, a quick clamp is selected, and the quick clamp is horizontal.

[0049] Further, the pressing mechanism 2 is any one of a vertical air cylinder and an electric cylinder. In order to realize automatic pressing and guarantee the stability of the pressing, the pressing mechanism 2 can be an electric device.

[0050] Further, a pattern is arranged on the upper end face of the test cover barrel 5. The pattern can increase the friction force and guarantee the pressing effect.

[0051] Further, the bottom side of the base 1 is provided with a foot pad 11. It can be moved at any time and can protect during the movement.

[0052] Further, the tray 3 is fixed on the base 1 by screws. The position is accurate during the test.

[0053] Further, the size of the test plate 4 is 70mm*70mm. Through the size limitation, the subsequent test is convenient.

[0054] Further, the test plate 4 is a single-layer plate or a multi-layer plate. The multi-layer plate can be the same material or different materials, such as the combination of metal and non-metal, or the combination of steel plate and aluminum alloy, which can be adjusted and tested according to the actual needs.

[0055] Through the structure design of the air tightness test tooling, the sealing effect of the tooling itself is ensured, and the volume accuracy is accurate, so that the design effect of meeting the product test requirements is achieved. Through the ingenious design, the test tooling design difficulty is reduced. The tooling not only considers the connection volume of the product, but also ensures the sealing effect of the tooling itself during the test process. The accuracy of the air tightness test result of the product connection is realized, which provides reliable guarantee for the subsequent installation.

[0056] The specific test process is:

[0057] The tooling is tested. The initial test plate is a flat plate, a test cover barrel is arranged on the flat plate, the air pressure test assembly is inflated inward, the stamping pressure is 100mbar, the pressure difference value is recorded after 60s of pressure stabilization, 10 tests are connected, each interval is 2 minutes, and the pressure difference fluctuation is within 10Pa. If the pressure difference fluctuation exceeds 10Pa, the sealing ring needs to be replaced and tested again. If it is still unqualified, it is determined that the air tightness of the tooling is unqualified.

[0058] The hot melt self-tapping screw to be tested is tested

[0059] According to the sealing requirement of IP67, the corresponding inflation pressure is 100mbar, the leakage rate requirement is less than 1.0E-3mbar*l / s, that is, 0.06ml / min. After inflation, the air pressure value is tested by the tester after a certain time of pressure stabilization, the differential pressure is obtained, and the judgment can be made.

[0060] The above is only the preferred embodiment of the present application, and is not used to limit the present application. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the technical principle of the present application, a number of improvements and modifications can be made, which should be regarded as the protection range of the present application.

Claims

1. A hot melt self-piercing rivet air tightness test tooling characterized by, The utility model relates to a self-tapping screw testing device, which comprises: a base (1) provided with a pressing mechanism (2); a tray (3) provided on the base (1) and provided with a clearance hole (31); a test plate (4) provided on the tray (3), wherein a self-tapping screw to be tested is detachably arranged through the test plate (4), and the end of the self-tapping screw to be tested is located in the clearance hole (31); a test cover barrel (5) which is a hollow structure, the lower end of the test cover barrel (5) is provided with an opening, the test cover barrel (5) is located at the upper end of the test plate (4), and the pressing mechanism (2) presses it, the end of the self-tapping screw to be tested is located in the test cover barrel (5), and a connecting nozzle (6) is arranged on the side wall of the test cover barrel (5); and a gas pressure test assembly (7) comprising a gas pressure machine (71) and a tester (72), wherein the gas pressure machine (71) is connected with the connecting nozzle (6) and performs inflation and deflation, and the test probe of the tester (72) is located in the test cover barrel (5).

2. The hot melt self-piercing rivet hermeticity test fixture of claim 1, wherein: The test plate (4) is provided with a threaded hole, and the threaded hole is matched with the self-tapping screw to be tested.

3. The hot melt blind rivet air tightness test fixture of claim 1, wherein: The internal volume of the test cover barrel (5) is 100ml.

4. The hot melt blind rivet air tightness test fixture of claim 1, wherein: The lower end of the test cover barrel (5) is provided with a sealing ring (51).

5. The hot melt self-piercing rivet hermeticity test fixture of Claim 1, wherein: The pressing mechanism (2) is arranged on the base (1) through a cushion block (8).

6. The hot melt blind rivet air tightness test fixture of claim 1, wherein: The pressing mechanism (2) is a quick clamp.

7. The hot melt blind rivet air tightness test fixture of claim 1, wherein: The pressing mechanism (2) is any one of a vertical air cylinder and an electric cylinder.

8. The hot melt blind rivet air tightness test fixture of claim 1, wherein: The lower side of the base (1) is provided with a foot pad (11).

9. The hot melt blind rivet air tightness test fixture of claim 1, wherein: The size of the test plate (4) is 70mm*70mm.

10. The hot melt blind rivet air tightness test fixture of claim 1, wherein: The test plate (4) is a single-layer plate or a multi-layer plate.

Images