Device for detecting airtightness of injection molded part

Abstract

The utility model discloses a device for detecting air tightness of an injection molding part, which is applied to the field of injection molding processing, solves the technical problems of inconvenience in disassembly and assembly and low efficiency in the air tightness detection process of the injection molding part of a vehicle lamp, and is characterized in that the device comprises a base and is characterized in that the base is detachably connected with a plurality of auxiliary fixing components; the auxiliary fixing assembly comprises a center base block, a first limiting supporting block and a second limiting supporting block, the first limiting supporting block and the second limiting supporting block are arranged on the two sides of the center base block respectively, fixing supporting feet are arranged at the bottoms of the center base block, the first limiting supporting block and the second limiting supporting block respectively, and locking holes detachably fixed to the base are formed in the fixing supporting feet. A positioning step convex block is arranged on the central base block, a positioning clamping groove is formed in the middle of the positioning step convex block, an auxiliary fixing supporting block is arranged at a notch of the positioning clamping groove, a limiting hole is formed in the auxiliary fixing supporting block, and the technical effect that the disassembly and assembly convenience degree in the air tightness detection process of the injection molding part can be improved can be achieved.

Description

Technical Field

[0001] The utility model relates to the field of injection molding, in particular to a device for detecting air tightness of injection molded parts. Background Art

[0002] After the injection molding of the headlight parts is completed, it is necessary to conduct necessary tests on their airtightness performance to adapt to the good wind and rain resistance of the vehicle after the headlight parts are assembled on the vehicle body, reduce the penetration of water vapor during use, and thus improve the reliability and quality of the headlight injection molded parts. Due to the special-shaped structural design of the headlight injection molded parts, most of the existing auxiliary devices for airtightness testing have complex structures and complicated operation processes. It is impossible to simply, quickly and effectively clamp the injection molded parts to carry out airtightness testing, resulting in low efficiency of the testing operation process. Utility Model Content

[0003] The utility model aims to provide a device for air tightness detection of injection molded parts, which has the advantage of being able to realize rapid and efficient disassembly, assembly and fixation of the injection molded parts of vehicle lamps during the air tightness detection process.

[0004] The above-mentioned technical purpose of the utility model is achieved through the following technical solutions: a device for airtight detection of injection molded parts, including a base, characterized in that: a plurality of auxiliary fixing components are detachably connected to the base, the auxiliary fixing components include a central base block, and a limiting support block 1 and a limiting support block 2 respectively arranged on both sides of the central base block, the bottoms of the central base block, the limiting support block 1 and the limiting support block 2 are all provided with fixed legs, the fixed legs are provided with locking holes that can be detachably fixed to the base, the central base block is provided with a positioning step protrusion, the middle part of the positioning step protrusion is provided with a positioning slot, the notch of the positioning slot is provided with an auxiliary fixing support block, the auxiliary fixing support block is provided with a limiting hole, a locking screw is passed through the limiting hole, a locking compression spring is sleeved on the locking screw, a slot protrusion is also provided on the limiting support block 2, a clamping groove is provided in the clamping slot protrusion, and a supporting step block is also provided on the limiting support block 1.

[0005] Further: the opening of the limiting hole is provided with a stepped groove.

[0006] Further: a plurality of drainage holes are provided on the surface of the base.

[0007] Furthermore: an anti-skid pad is provided at the bottom of the base.

[0008] Furthermore: an accessories storage box is fixed on the base.

[0009] Furthermore: a movable gripping block is also provided on the base.

[0010] Further: a flexible protective pad is provided on the surface of the positioning step protrusion.

[0011] In summary, the utility model has the following beneficial effects:

[0012] 1. Through the combined work of the central base block, the limit block 1 and the limit block 2, the limit support of the headlight injection molded parts can be realized quickly and efficiently. The detection and installation personnel can operate conveniently. They only need to move the base as a whole and place it in the rain simulation chamber to quickly realize the water shower test, and take out the base as a whole after the specified time to observe the airtight performance of the injection molded parts. The installation limit and the pick-and-place process are convenient and efficient, which effectively improves the convenience of the airtightness detection process of headlight injection molded parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram for showing the structure of the airtight detection device in the embodiment;

[0014] Figure 2 It is a schematic diagram for showing the structure of the base part in the embodiment;

[0015] Figure 3 It is a schematic diagram for showing the assembly work of the injection molding parts of the detection device in the embodiment.

[0016] Figure markings: 1. Base; 2. Center base block; 3. Limit support block 1; 4. Limit support block 2; 5. Fixed support foot; 6. Locking hole; 7. Positioning step protrusion; 8. Positioning slot; 9. Auxiliary fixed support block; 10. Limiting hole; 11. Locking screw; 12. Locking compression spring; 13. Slot protrusion; 14. Snap-in groove; 15. Support step block; 16. Step groove; 17. Drainage hole; 18. Anti-slip pad; 19. Accessory storage box; 20. Movable grab block; 21. Flexible protection pad. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0018] Embodiment: A device for detecting airtightness of injection molded parts, such as Figure 1 and Figure 3 As shown, it includes a base 1, on which are detachably connected a plurality of auxiliary fixing components for installing and fixing the headlight injection molded parts after injection molding. After the device is fixed with a limit position, it is placed in a professional rain simulation chamber for water spray air tightness test. A movable gripping block 20 is also provided on the base 1, which facilitates the user to move and take and place the entire device.

[0019] like Figure 1 , Figure 2 and Figure 3As shown, the auxiliary fixing assembly includes a central base block 2, and a limiting support block 1 3 and a limiting support block 2 4 respectively arranged on both sides of the central base block 2. The installer first completes the preliminary positioning with the headlight injection molded part through the central base block 2, and realizes the auxiliary limiting support and tightening through the limiting blocks 1 and 2 on both sides. The bottom of the central base block 2, the limiting support block 1 3 and the limiting support block 2 4 are all provided with fixed legs 5, and the fixed legs 5 are provided with locking holes 6 that are detachably fixed to the base 1. The installer realizes the bolt fastening of the auxiliary fixing assembly and the base 1 through the locking holes 6.

[0020] A positioning step protrusion 7 is provided on the central base block 2, and a positioning card groove 8 is provided in the middle of the positioning step protrusion 7. The headlight injection molded part is snap-fitted and positioned with the positioning card groove 8. A supporting step block 15 is also provided on the limiting support block 1 3, which can support and engage one side of the headlight injection molded part. A card groove protrusion 13 is provided on the other side limiting support block 2 4, and a card connection groove 14 is provided in the card groove protrusion 13, which can snap-fit ​​and lock the side installation buckle of the positioned headlight injection molded part away from the limiting support block 1 3, thereby achieving a simulated frame and headlight installation locking state.

[0021] An auxiliary fixing support block 9 is also provided at the notch of the positioning slot 8, and a limiting hole 10 is provided on the auxiliary fixing support block 9. A locking screw 11 is inserted into the limiting hole 10, and a locking compression spring 12 is sleeved on the locking screw 11. The locking screw 11 is tightened with the bolt hole on the headlight injection molded part. The locking compression spring 12 is compressed under the continuous tightening action of the installer to continuously form the installation locking effect of the headlight injection molded part. An accessory storage box 19 is also fixed on the base 1. When the headlight injection molded part needs to be disassembled and assembled, accessories such as the locking screw 11 and the locking compression spring 12 can be stored in the accessory storage box 19 to facilitate the manual operation of the detection installer.

[0022] In order to further improve the installation stability of the headlight injection molded part, a step embedding groove 16 is provided at the opening of the limiting hole 10, which can further limit the movement of the locking compression spring 12, improve the locking compression spring 12 after being continuously compressed, and always be embedded in the step embedding groove 16, reducing the unstable movement caused by the compression deformation of the locking compression spring 12. With the continuous locking force of the locking screw 11, the surface of the positioning step protrusion 7 is provided with a flexible protective pad 21, which can protect the contact position of the surface of the headlight injection molded part and reduce the possible indentation damage.

[0023] After completing the limiting fixation and locking, the inspector can place the entire device equipped with the headlight injection molded parts in a professional rain simulation chamber for a water shower impact test. The surface of the base 1 is provided with multiple drainage holes 17, which can ensure a good water diversion and drainage effect during the water shower test and reduce the deposition of water on the device. At the same time, the bottom of the base 1 is provided with an anti-slip pad 18, which reduces the possible movement of the headlight injection molded parts on the base 1 during the water shower impact process, ensuring the stable use and reliable performance of the stable device.

[0024] After the water spray air tightness test, the inspector can quickly withdraw the entire device, loosen the locking screw 11 and simultaneously release the limit of the limit support block 1 3 and the limit support block 2 4 on the headlight injection molded part, and observe whether there are any water leaks inside the headlight injection molded part to determine the overall air tightness performance of the headlight injection molded part. The inspection test process is efficient and convenient.

[0025] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A device for detecting air tightness of injection molded parts, comprising a base (1), characterized in that: The base (1) is detachably connected to a plurality of auxiliary fixing components, the auxiliary fixing components comprising a central base block (2), and a first limiting support block (3) and a second limiting support block (4) respectively arranged on both sides of the central base block (2); the bottoms of the central base block (2), the first limiting support block (3) and the second limiting support block (4) are all provided with fixing legs (5); the fixing legs (5) are provided with locking holes (6) which are detachably fixed to the base (1); the central base block (2) is provided with a positioning step protrusion (7); the positioning step protrusion A positioning slot (8) is provided in the middle of the block (7), an auxiliary fixing support block (9) is provided at the notch of the positioning slot (8), a limiting hole (10) is provided on the auxiliary fixing support block (9), a locking screw (11) is passed through the limiting hole (10), a locking compression spring (12) is sleeved on the locking screw (11), a slot convex block (13) is also provided on the limiting support block (4), a clamping groove (14) is provided in the slot convex block (13), and a supporting step block (15) is also provided on the limiting support block (3).

2. The device for detecting air tightness of injection molded parts according to claim 1, characterized in that: The opening of the limiting hole (10) is provided with a stepped embedding groove (16).

3. The device for detecting air tightness of injection molded parts according to claim 1, characterized in that: A plurality of drainage holes (17) are provided on the surface of the base (1).

4. The device for detecting air tightness of injection molded parts according to claim 1, characterized in that: An anti-slip pad (18) is provided at the bottom of the base (1).

5. The device for detecting air tightness of injection molded parts according to claim 1, characterized in that: An accessory storage box (19) is also fixed on the base (1).

6. The device for detecting air tightness of injection molded parts according to claim 1, characterized in that: The base (1) is also provided with a movable gripping block (20).

7. The device for detecting air tightness of injection molded parts according to claim 1, characterized in that: A flexible protective pad (21) is provided on the surface of the positioning step protrusion (7).

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