A multi-station air tightness detection device

Abstract

The utility model discloses a multi -station air -tightness detection equipment, include: air -tight detection workbench and press closed subassembly, air -tight detection workbench top is provided with double -position, and press closed subassembly includes the push unit of setting in the air -tight detection workbench top, and the push unit bottom is provided with the closed cavity board, and the top of closed cavity board is provided with the air inlet portion, and the bottom of closed cavity board is provided with the press -down portion, and the outside of closed cavity board bottom is provided with the sealing ring, and the inner wall of closed cavity board is provided with the fixed part, the utility model discloses the top of air -tight detection workbench is provided with press closed subassembly, utilizes the fixed part of closed cavity board inner chamber in press closed subassembly and fixes the sealing ring, and the relative side of double -position and closed cavity board is sealed and filled to sealing ring, and compared with the sealing ring directly using glue and bonding fixed in the bottom of closed cavity board, when the sealing ring needs replacing when damaging, the design avoids the time -consuming glue removal operation of closed cavity board bottom.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing equipment, and in particular to a multi-station airtightness testing equipment. Background Technology

[0002] When a multi-station airtightness testing device tests an oil pan, the way the sealing ring is fixed directly affects the equipment maintenance efficiency and testing accuracy. The movable sealing plate limits and fixes the oil pan at the top of the inspection station. The equipment injects pressurized gas into the sealing plate and then uses the equipment to monitor the pressure change inside the sealing plate to determine the airtightness of the oil pan.

[0003] However, in order to seal the connection gap between the sealing chamber plate and the inspection station, a sealing strip is filled in it. The sealing strip is glued to the bottom of the sealing chamber plate. After long-term use, the sealing ring is damaged and needs to be replaced. The glue on the bottom of the sealing chamber plate needs to be removed, otherwise it will affect the stability of the subsequent replacement of the sealing ring. However, this glue removal operation is time-consuming and prolongs the replacement time of the sealing ring.

[0004] Therefore, in order to solve the above problems, a multi-station airtightness testing device is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a multi-station airtightness testing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-station airtightness testing device, comprising:

[0007] An airtightness testing workbench, the top of which is provided with a dual workstation for placing the part to be tested;

[0008] A pressure sealing assembly is used to fix and seal the workpiece under inspection. The pressure sealing assembly includes a pushing part disposed on the top of the airtightness testing workbench, a sealing cavity plate disposed at the bottom of the pushing part, an air inlet disposed at the top of the sealing cavity plate, a pressure part disposed at the bottom of the sealing cavity plate for squeezing the workpiece under inspection, a sealing ring disposed on the outer side of the bottom of the sealing cavity plate, and a fixing part disposed on the inner wall of the sealing cavity plate for locking the sealing ring.

[0009] Preferably, the pushing part includes:

[0010] A support frame is mounted on top of the airtightness testing workbench;

[0011] A cylinder is disposed on the top of the support frame, and the output end of the cylinder is fixedly connected to the top of the closed cavity plate, which is disposed at the bottom of the support frame.

[0012] A sliding rod, the top of which is inserted and connected to the bottom of the closed cavity plate, is located on the opposite side of the airtightness testing workbench and the support frame.

[0013] Preferably, the air intake includes an air intake pipe, which is disposed on the top of the air tightness testing workbench, and the air intake end of the air intake pipe is fixedly connected to the air delivery end of the air tightness testing workbench.

[0014] Preferably, the pressing part includes a pressing block, which is disposed at the bottom of the closed cavity plate and is used for pressing and fixing the workpiece to be inspected.

[0015] Preferably, the fixing part includes:

[0016] Positioning blocks, a plurality of said positioning blocks are arranged around the top of the sealing ring;

[0017] Socket blocks, a plurality of said socket blocks are arranged around the inner wall of the closed cavity plate;

[0018] An elastic insert is provided on the top of the positioning block, and the top of the elastic insert is inserted and connected to the bottom of the receiving block;

[0019] A snap-fit ​​element is provided at the intersection of the socket block and the elastic insert, and the snap-fit ​​element is used to limit the elastic insert.

[0020] Preferably, the snap-fit ​​component includes a snap-fit ​​groove, which is formed at the bottom of the socket block, and the inner wall of the snap-fit ​​groove is used to fix the elastic insert.

[0021] Preferably, the inner wall of the snap-fit ​​groove is provided with an unlocking groove, which is used for the elastic insert to be pressed to unlock.

[0022] The technical effects and advantages of this utility model are as follows:

[0023] This invention features a pressure sealing assembly on the top of the airtightness testing workbench. The sealing ring is fixed by the fixing part of the inner cavity of the sealing chamber plate in the pressure sealing assembly. The sealing ring seals and fills the opposite side of the dual workstation and the sealing chamber plate. Compared with directly gluing the sealing ring to the bottom of the sealing chamber plate, this design avoids the time-consuming glue removal operation at the bottom of the sealing chamber plate when the sealing ring is damaged and needs to be replaced. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0025] Figure 2 This is a front view of the entire utility model.

[0026] Figure 3This is a cross-sectional view of the pressure-sealing component of this utility model.

[0027] Figure 4 This utility model Figure 3 Enlarged view of the structure at point A in the middle.

[0028] In the diagram: 1. Air tightness testing workbench; 2. Support frame; 3. Cylinder; 4. Sealed cavity plate; 401. Slide rod; 402. Pressing block; 5. Air inlet pipe; 6. Dual station; 7. Sealing ring; 8. Fixing part; 801. Positioning block; 802. Socket block; 8021. Snap-fit ​​groove; 8022. Unlocking groove; 803. Elastic insert. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] This utility model provides, for example Figure 1-4 As shown:

[0031] Example 1: A multi-station airtightness testing device, comprising: an airtightness testing workbench 1 and a pressure sealing assembly;

[0032] Specifically, the top of the airtightness testing workbench 1 is provided with a dual workstation 6 for placing the workpiece to be inspected. The overall structure of the airtightness testing workbench 1 and the dual workstation 6 refers to the working principle of the ZC-QM airtightness tester. The pressure sealing component is used to fix and seal the workpiece to be inspected.

[0033] It should be noted that the pressing and sealing assembly includes a pushing part set on the top of the airtightness testing workbench 1, a sealing cavity plate 4 set at the bottom of the pushing part, an air inlet set at the top of the sealing cavity plate 4, a pressing part for squeezing the workpiece to be inspected set at the bottom of the sealing cavity plate 4, a sealing ring 7 set on the outer side of the bottom of the sealing cavity plate 4, and a fixing part 8 for locking the sealing ring 7 set on the inner wall of the sealing cavity plate 4.

[0034] Specifically, the propulsion unit includes: support frame 2, cylinder 3 and slide rod 401;

[0035] It should be noted that the support frame 2 is set on the top of the airtightness testing workbench 1, the cylinder 3 is set on the top of the support frame 2, the output end of the cylinder 3 is fixedly connected to the top of the closed cavity plate 4, the closed cavity plate 4 is set on the bottom of the support frame 2, the tops of multiple slide rods 401 are inserted and connected to the bottom of the closed cavity plate 4, and the slide rods 401 are set on the opposite side of the airtightness testing workbench 1 and the support frame 2.

[0036] Specifically, the support frame 2 is welded to the airtightness testing workbench 1, the output end of the cylinder 3 is welded to the closed cavity plate 4, the cylinder 3 is welded to the support frame 2, and both ends of the slide rod 401 are welded to the airtightness testing workbench 1 and the support frame 2. The slide rod 401 guides and restricts the movement of the closed cavity plate 4.

[0037] It should be noted that the air intake section includes an air intake pipe 5, which is located on the top of the air tightness testing workbench 1, and the air intake end of the air intake pipe 5 is fixedly connected to the air delivery end of the air tightness testing workbench 1.

[0038] Specifically, the intake pipe 5 is used for pressurized gas to enter the sealed cavity plate 4. Due to the obstruction of the workpiece under inspection, the pressure value of the pressurized gas remains unchanged. If the oil pan of the workpiece under inspection has a crack, the gas leaks and the pressure value of the pressurized gas decreases.

[0039] It should be noted that the pressing part includes a pressing block 402, which is disposed at the bottom of the closed cavity plate 4. The pressing block 402 is used for pressing and fixing the workpiece to be inspected.

[0040] Specifically, the lower pressure block 402 is fixed to the closed cavity plate 4 by welding. The protrusion height of the bottom of the lower pressure block 402 is different, which is used to squeeze and fix oil pans with different height dimensions.

[0041] It should be noted that the fixing part 8 includes: a positioning block 801, a socket block 802, an elastic insert 803, and a snap-fit ​​component;

[0042] Specifically, multiple positioning blocks 801 are arranged around the top of the sealing ring 7, multiple socket blocks 802 are arranged around the inner wall of the closed cavity plate 4, an elastic insert 803 is arranged on the top of the positioning blocks 801, the top of the elastic insert 803 is inserted and connected to the bottom of the socket block 802, and a snap-fit ​​is arranged at the intersection of the socket block 802 and the elastic insert 803.

[0043] It should be noted that the snap-fit ​​component is used to limit the elastic insert 803. The elastic insert 803 is made of copper alloy. The insertion point of the elastic insert 803 and the positioning block 801 is fixed by welding. The insertion point of the positioning block 801 and the sealing ring 7 is limited and fixed by the elastic wrapping force of the sealing ring 7.

[0044] Example 2: A snap-fit ​​component, applied to the multi-station airtightness testing equipment in Example 1;

[0045] Specifically, the snap-fit ​​component includes a snap-fit ​​groove 8021, which is formed at the bottom of the socket block 802, and the inner wall of the snap-fit ​​groove 8021 is used to fix the elastic insert 803.

[0046] It should be noted that the side of the elastic insert 803 is convex and is used to limit the engagement with the snap-fit ​​groove 8021. The inner wall of the snap-fit ​​groove 8021 is provided with an unlocking groove 8022. The unlocking groove 8022 is used to unlock the elastic insert 803 by pressing it. The user can unlock the elastic insert 803 by pressing it through the unlocking groove 8022, so as to replace the sealing ring 7 as a whole.

[0047] In actual use, by setting a pressure sealing assembly on the top of the airtightness testing workbench 1, the sealing ring 7 is fixed by the fixing part 8 of the inner cavity of the sealing chamber plate 4 in the pressure sealing assembly. The sealing ring 7 seals and fills the opposite side of the dual workstation 6 and the sealing chamber plate 4. Compared with directly fixing the sealing ring 7 to the bottom of the sealing chamber plate 4 with glue, this design avoids the time-consuming glue removal operation at the bottom of the sealing chamber plate 4 when the sealing ring 7 is damaged and needs to be replaced.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-station airtightness testing device, characterized in that, include: An airtightness testing workbench (1) is provided with a double workstation (6) on the top of the airtightness testing workbench (1) for placing the workpiece to be inspected. The pressing and sealing assembly is used to fix and seal the workpiece to be inspected. The pressing and sealing assembly includes a pushing part set on the top of the airtightness testing workbench (1). A sealing cavity plate (4) is set at the bottom of the pushing part. An air inlet is set at the top of the sealing cavity plate (4). A pressing part for squeezing the workpiece to be inspected is set at the bottom of the sealing cavity plate (4). A sealing ring (7) is set on the outer side of the bottom of the sealing cavity plate (4). A fixing part (8) for locking the sealing ring (7) is set on the inner wall of the sealing cavity plate (4).

2. The multi-station airtightness testing equipment according to claim 1, characterized in that, The aforementioned propulsion unit includes: Support frame (2), which is disposed on the top of the airtightness testing workbench (1); Cylinder (3), the cylinder (3) is located on the top of the support frame (2), the output end of the cylinder (3) is fixedly connected to the top of the closed cavity plate (4), and the closed cavity plate (4) is located on the bottom of the support frame (2); The top of multiple slide rods (401) is inserted and connected to the bottom of the closed cavity plate (4). The slide rods (401) are arranged on the opposite side of the airtightness testing workbench (1) and the support frame (2).

3. The multi-station airtightness testing equipment according to claim 2, characterized in that, The air intake section includes an air intake pipe (5), which is located on the top of the air tightness testing workbench (1). The air intake end of the air intake pipe (5) is fixedly connected to the air delivery end of the air tightness testing workbench (1).

4. The multi-station airtightness testing equipment according to claim 2, characterized in that, The pressing part includes a pressing block (402), which is disposed at the bottom of the closed cavity plate (4) and is used for pressing and fixing the workpiece to be inspected.

5. The multi-station airtightness testing equipment according to claim 1, characterized in that, The fixing part (8) includes: Positioning blocks (801), a plurality of said positioning blocks (801) are arranged around the top of the sealing ring (7); Socket blocks (802), a plurality of socket blocks (802) are arranged around the inner wall of the closed cavity plate (4); An elastic insert (803) is disposed on the top of the positioning block (801), and the top of the elastic insert (803) is inserted and connected to the bottom of the receiving block (802); A snap-fit ​​element is provided at the intersection of the socket block (802) and the elastic insert (803), and the snap-fit ​​element is used to limit the elastic insert (803).

6. The multi-station airtightness testing equipment according to claim 5, characterized in that, The snap-fit ​​component includes a snap-fit ​​groove (8021), which is located at the bottom of the socket block (802). The inner wall of the snap-fit ​​groove (8021) is used to fix the elastic insert (803).

7. The multi-station airtightness testing equipment according to claim 6, characterized in that, The inner wall of the snap-fit ​​groove (8021) is provided with an unlocking groove (8022), which is used to unlock the elastic insert (803) by pressing.

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