Air tightness testing fixture for automobile accessory rear cover

Abstract

The utility model discloses an air tightness testing fixture for a rear cover of an automobile accessory. The air tightness testing fixture comprises a machine table, the air tightness detection water tank is arranged on the air tightness detection base on the machine table, the air tightness detection base is arranged in the air tightness detection water tank, the automobile accessory rear cover is placed on the air tightness detection base in an attached mode, an air tightness containing cavity is formed between the automobile accessory rear cover and the air tightness detection base, and the air tightness detection base is provided with an air conveying channel for conveying air to the air tightness containing cavity; the plurality of positioning blocks are respectively fixed on the airtightness detection base at the periphery of the automobile accessory rear cover and are attached to the peripheral side wall surface of the automobile accessory rear cover, and the plurality of positioning blocks are used for restraining the front, rear, left and right position movement of the automobile accessory rear cover; and the downward pressing module is arranged on the machine table and used for being pressed on the upper surface of the automobile accessory rear cover so as to restrain the up-and-down position movement of the automobile accessory rear cover. The air tightness detection device has the advantages of rapid detection and convenience in judging whether the air tightness is qualified.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of production detection of automobile accessory rear cover, especially relates to a kind of air tightness testing fixture for automobile accessory rear cover. BACKGROUND

[0002] In the field of automobile manufacturing, automobile accessory rear cover is an important component of vehicle body, and its sealing performance directly affects the comfort, safety and service life of the whole vehicle.

[0003] Therefore, in order to ensure the air tightness of automobile accessory rear cover, it is crucial to detect the air tightness of automobile accessory rear cover during production. There is an urgent need for an air tightness testing fixture to solve the problem of air tightness detection of rear cover in existing processing. UTILITY MODEL CONTENT

[0004] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides an air tightness testing fixture for automobile accessory rear cover.

[0005] An air tightness testing fixture for automobile accessory rear cover is designed for this purpose, which comprises

[0006] Machine table;

[0007] Air tightness detection water tank, which is arranged on the machine table;

[0008] Air tightness detection base, which is arranged in the air tightness detection water tank, and the automobile accessory rear cover is placed on the air tightness detection base, an air tightness cavity is formed between the automobile accessory rear cover and the air tightness detection base, and the air tightness detection base is provided with a gas supply channel for supplying gas to the air tightness cavity;

[0009] A plurality of positioning blocks, which are respectively fixed on the air tightness detection base around the automobile accessory rear cover and are in close contact with the peripheral wall surface of the automobile accessory rear cover, and the plurality of positioning blocks are used to constrain the front, rear, left and right position movement of the automobile accessory rear cover;

[0010] Lower pressing module, which is arranged on the machine table and is used to press the upper surface of the automobile accessory rear cover to constrain the up-down position movement of the automobile accessory rear cover.

[0011] As a preferred, the lower pressing module comprises a first moving plate moving up and down relative to the machine table, and the machine table is provided with a first linear element for driving the first moving plate to move up and down;

[0012] The first moving plate is provided with a second linear element, the extension end of the second linear element is connected with a second moving plate, and the second linear element is used to drive the second moving plate to move up and down relative to the first moving plate;

[0013] The second moving plate is provided with a plurality of pressing heads for abutting against the upper surface of the rear cover of the automobile accessory;

[0014] The airtight detection water tank is provided with a lifting plate moving up and down relative to the airtight detection water tank, and the airtight detection base is arranged on the lifting plate.

[0015] The lifting plate is provided with a connecting column connected with the first moving plate.

[0016] As a preferred, the machine table is provided with a press-lock assembly for pressing on the upper surface of the second moving plate.

[0017] As a preferred, the press-lock assembly comprises a fixing frame arranged on the machine table, the fixing frame is provided with a third linear element, the telescopic end of the third linear element is connected with a third moving plate, and the third linear element is used to drive the third moving plate to move up and down relative to the fixing frame.

[0018] The third moving plate is provided below with a lock-pressing plate connected with the third moving plate through an elastic assembly.

[0019] As a preferred, the elastic assembly comprises a connecting seat connected with the lock-pressing plate, the connecting seat is provided with a connecting shaft extending upward, the third moving plate is provided with a shaft hole penetrating up and down, the connecting shaft is arranged in the shaft hole, the upper end of the connecting shaft is connected with a limiting piece abutting against the upper surface of the third moving plate, and a spring is arranged on the connecting shaft between the connecting seat and the third moving plate.

[0020] As a preferred, the airtight detection water tank is provided with a plug assembly for plugging the hole of the rear cover of the automobile accessory, and the plug assembly is arranged on the lifting plate.

[0021] As a preferred, the plug assembly comprises a push-pull type quick clamp fixedly arranged in the airtight detection water tank, and the telescopic end of the push-pull type quick clamp is connected with a plug corresponding to the hole.

[0022] As a preferred, the airtight detection base is provided with a sealing ring abutting against the rear cover of the automobile accessory, and the airtight cavity is located in the sealing ring.

[0023] As a preferred, the gas conveying channel is provided at one end away from the airtight cavity with a connecting joint.

[0024] As a preferred, the airtight detection water tank is provided with a water faucet for draining water.

[0025] The utility model discloses a gas tightness detection tool, which can realize the fixed clamping of the rear cover of the automobile accessory, and under the action of air inlet and water tank immersion, whether the rear cover of the automobile accessory clamped on the gas tightness detection base leaks air can be quickly distinguished. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the three-dimensional structure schematic diagram of gas tightness detection tool;

[0027] Figure 2 It is the cross section structure schematic diagram of gas tightness detection tool one;

[0028] Figure 3 It is the clamping schematic diagram of gas tightness detection base and rear cover of automobile accessory;

[0029] Figure 4 It is the cross section structure schematic diagram of gas tightness detection base and rear cover of automobile accessory;

[0030] Figure 5 It is the three-dimensional structure schematic diagram of gas tightness detection base;

[0031] Figure 6 It is Figure 1 It is the enlarged structure schematic diagram of A place in middle;

[0032] Figure 7 It is the cross section structure schematic diagram of gas tightness detection tool two. DETAILED DESCRIPTION

[0033] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0035] In the description of the embodiments of the present application, the technical terms "first", "second" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0036] Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with an embodiment is included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be combined with any of the other embodiments unless explicitly stated otherwise.

[0037] In the description of the embodiments of the present application, the term "and / or" is merely used to describe an associated relationship between associated objects, and indicates that there can be three relationships, for example, A and / or B, which can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " herein generally indicates that the front and rear associated objects are in an "or" relationship.

[0038] In the description of the embodiments of the present application, the term "a plurality of" refers to two or more (including two), and similarly, "a plurality of groups" refers to two or more groups (including two groups), and "a plurality of pieces" refers to two or more pieces (including two pieces).

[0039] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0040] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing", and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] Referring to Figures 1-7 A gas tightness testing tool for a car accessory rear cover, the gas tightness testing tool comprising

[0042] A machine table 10;

[0043] A gas tightness testing water tank 20 is arranged on the machine table 10.

[0044] The air-tight detection base 30 is arranged in the air-tight detection water tank 20, the automotive accessory back cover 40 is placed on the air-tight detection base 30, the air-tight detection base 30 is provided with the gas conveying channel 320 for conveying gas to the air-tight cavity 340.

[0045] The plurality of positioning blocks 310 are fixed on the air-tight detection base 30 around the automotive accessory back cover 40 and are in close contact with the peripheral side wall surface of the automotive accessory back cover 40, and the plurality of positioning blocks 310 are used for restricting the front, rear, left and right position movement of the automotive accessory back cover 40.

[0046] The lower pressing module 60 is arranged on the machine table 10 and is used for pressing the upper surface of the automotive accessory back cover 40 to restrict the up-down position movement of the automotive accessory back cover 40.

[0047] The detection principle of the utility model is as follows:

[0048] 1. The automotive accessory back cover 40 is placed in close contact with the air-tight detection base 30.

[0049] 2. The plurality of positioning blocks 310 are arranged on the air-tight detection base 30 around the automotive accessory back cover 40, and the positioning blocks 310 are in close contact with the automotive accessory back cover 40 to restrict the front, rear, left and right position movement of the automotive accessory back cover 40.

[0050] 3. The lower pressing module 60 is operated to press the upper surface of the automotive accessory back cover 40, so that the automotive accessory back cover 40 is fixed and restricted under the clamping of the lower pressing module 60 and the air-tight detection base 30.

[0051] 4. Water is added to the air-tight detection water tank 20 until the water level is higher than the automotive accessory back cover 40.

[0052] 5. The external gas supply device conveys gas to the gas conveying channel 320, and the gas enters the air-tight cavity 340. At this time, if the automotive accessory back cover 40 has a gas leakage point, bubbles visible to the naked eye will be generated under the action of water, so that the gas leakage point can be quickly determined to quickly determine whether the air-tightness of the automotive accessory back cover 40 is qualified.

[0053] In the utility model, the gas conveying channel 320 is connected with the external gas supply device through a pipeline.

[0054] The external gas supply device can be an air compressor.

[0055] Referring to Figure 6 and Figure 7The lower pressing die set 60 comprises a first moving plate 610 moving up and down relative to the machine table 10, and the machine table 10 is provided with a first linear element 620 for driving the first moving plate 610 to move up and down;

[0056] The moving plate 610 is provided with a second linear element 630, and the telescopic end of the second linear element 630 is connected with a second moving plate 640, and the second linear element 630 is used for driving the second moving plate 640 to move up and down relative to the first moving plate 610;

[0057] The second moving plate 640 is provided with a plurality of pressing heads 650 for abutting against the upper surface of the automobile accessory rear cover 40;

[0058] The air tightness detection water tank 20 is provided with a lifting plate 210 moving up and down relative to the air tightness detection water tank 20, and the air tightness detection base 30 is arranged on the lifting plate 210;

[0059] The lifting plate 210 is provided with a connecting column 220 connected with the first moving plate 610.

[0060] The first linear element 620 and the second linear element 630 are both air cylinders.

[0061] The working principle of the lower pressing die set 60 is that the first linear element 620 drives the lifting plate 210, the first moving plate 610, the second linear element 630, the second moving plate 640 and the pressing heads 650 to move downward synchronously;

[0062] The movement of the lifting plate 210 can drive the air tightness detection base 30 and the automobile accessory rear cover 40 to move downward to be soaked in water;

[0063] Then the second linear element 630 is started, and the second linear element 630 drives the second moving plate 640 and the pressing heads 650 to move downward synchronously, until the pressing heads 650 press the upper surface of the automobile accessory rear cover 40, so as to realize the pressing of the automobile accessory rear cover 40.

[0064] Referring to Figure 1 and Figure 2 The machine table 10 is provided with a pressure lock assembly 70 for pressing against the upper surface of the second moving plate 640. The pressure lock assembly 70 is used for pressing against the second moving plate 640 to avoid the upward movement of the second moving plate 640, so as to avoid the loosening of the automobile accessory rear cover 40 and affect the air tightness detection.

[0065] Referring to Figure 1 and Figure 2The pressure locking assembly 70 comprises a fixing frame 710 arranged on the machine table 10, a third linear element 720 arranged on the fixing frame 710, and a third moving plate 730 connected to the telescopic end of the third linear element 720, wherein the third linear element 720 is used to drive the third moving plate 730 to move up and down relative to the fixing frame 710.

[0066] The third moving plate 730 is arranged below the pressure locking plate 740, and the pressure locking plate 740 is connected with the third moving plate 730 through an elastic assembly 750.

[0067] The third linear element 720 is a pneumatic cylinder.

[0068] When the pressure locking assembly 70 is used to lock, the pressure locking plate 740 is driven by the third linear element 720 to move downward until the pressure locking plate 740 is tightly combined with the second moving plate 640, so as to generate a constraint force on the second moving plate 640 to avoid the second moving plate 640 from moving upward and causing the loosening of the automobile accessory rear cover 40 and affecting the air tightness detection.

[0069] Referring to Figure 2 and Figure 7 The elastic assembly 750 comprises a connecting seat 751 connected with the pressure locking plate 740, an upwardly extending connecting shaft 752 arranged on the connecting seat 751, an axially penetrating shaft hole 731 arranged on the third moving plate 730, and a spring 753 sleeved on the connecting shaft 752 between the connecting seat 751 and the third moving plate 730.

[0070] The elastic assembly 750 can provide an elastic moving space between the pressure locking plate 740 and the third moving plate 730 to improve the pressing force of the pressure locking plate 740, and can avoid the pressure locking plate 740 from pushing the pressure head 650 to damage the automobile accessory rear cover 40.

[0071] Referring to Figure 6 The air tightness detection tank 20 is arranged with a plug assembly 50 for plugging the hole 410 of the automobile accessory rear cover 40, and the plug assembly 50 is arranged on the lifting plate 210. The hole 410 is arranged on the automobile accessory rear cover 40 to connect various pipelines, and the hole 410 needs to be plugged to avoid air leakage during the air tightness detection. The plug assembly 50 can quickly plug the hole 410.

[0072] Referring to Figure 6The plug assembly 50 comprises a push-pull quick clamp 510 fixedly arranged in the air tightness detection sink 20, and the telescopic end of the push-pull quick clamp 510 is connected with a plug 520 corresponding to the hole 410. The push-pull quick clamp 510 is a commercially available product, which can quickly drive the plug 520 to be inserted into the hole 410 for plugging or drive the plug 520 to be withdrawn from the hole 410.

[0073] Referring to Figure 4 and Figure 5 The air tightness detection base 30 is provided with a sealing ring 330 corresponding to the automotive accessory rear cover 40, and the air tightness cavity 340 is located in the sealing ring 330. The sealing ring 330 can enhance the sealing property of the automotive accessory rear cover 40 and the air tightness detection base 30.

[0074] Referring to Figure 4 The gas conveying channel 320 is provided with a connecting joint 300 at the end away from the air tightness cavity 340. The connecting joint 300 can be connected with a pipeline to realize the connection with an external gas supply device.

[0075] Referring to Figure 1 The air tightness detection sink 20 is provided with a faucet 200 for draining water.

[0076] The basic principle and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An airtightness tester for automotive parts rear covers, characterized in that: The airtightness detection tool comprises A machine table (10); An airtightness detection water tank (20) arranged on the machine table (10); An airtightness detection base (30) arranged in the airtightness detection water tank (20), a car accessory rear cover (40) being placed on the airtightness detection base (30) in a fit manner, an airtight cavity (340) being formed between the car accessory rear cover (40) and the airtightness detection base (30), the airtightness detection base (30) being provided with a gas supply channel (320) for supplying gas to the airtight cavity (340); A plurality of positioning blocks (310) being respectively fixed on the airtightness detection base (30) around the car accessory rear cover (40) and being in fit with the peripheral side wall surface of the car accessory rear cover (40), the plurality of positioning blocks (310) being used for restricting the front, rear, left and right position movement of the car accessory rear cover (40); A lower pressing module (60) arranged on the machine table (10) and being used for pressing on the upper surface of the car accessory rear cover (40) to restrict the up and down position movement of the car accessory rear cover (40).

2. A leak tester for a trunk lid as set forth in claim 1, wherein: The lower pressing module (60) comprises a first moving plate (610) moving up and down relative to the machine table (10), the machine table (10) being provided with a first linear element (620) for driving the first moving plate (610) to move up and down; The first moving plate (610) is provided with a second linear element (630), the telescopic end of the second linear element (630) being connected with a second moving plate (640), the second linear element (630) being used for driving the second moving plate (640) to move up and down relative to the first moving plate (610); The second moving plate (640) is provided with a plurality of pressing heads (650) for being in fit with the upper surface of the car accessory rear cover (40); The airtightness detection water tank (20) is provided with a lifting plate (210) moving up and down relative to the airtightness detection water tank (20), the airtightness detection base (30) being arranged on the lifting plate (210); The lifting plate (210) is provided with a connecting column (220), the connecting column (220) being connected with the first moving plate (610).

3. A leak tester for a trunk lid as set forth in claim 2, wherein: The machine table (10) is provided with a press locking assembly (70) for being pressed on the upper surface of the second moving plate (640).

4. A leak tester for a trunk lid as set forth in claim 3, wherein: The press locking assembly (70) comprises a fixing frame (710) arranged on the machine table (10), the fixing frame (710) being provided with a third linear element (720), the telescopic end of the third linear element (720) being connected with a third moving plate (730), the third linear element (720) being used for driving the third moving plate (730) to move up and down relative to the fixing frame (710); The third moving plate (730) is provided below with a locking pressing plate (740), the locking pressing plate (740) being connected with the third moving plate (730) through an elastic assembly (750).

5. A leak tester for a trunk lid as defined in claim 4, wherein: The elastic assembly (750) comprises a connecting seat (751) connected with the lock pressing plate (740), the connecting seat (751) is provided with a connecting shaft (752) extending upwards, the third moving plate (730) is provided with a shaft hole (731) penetrating up and down, the connecting shaft (752) is arranged in the shaft hole (731), the upper end of the connecting shaft (752) is connected with a limiting piece (754), the limiting piece (754) abuts against the upper surface of the third moving plate (730), and the spring (753) is arranged on the connecting shaft (752) between the connecting seat (751) and the third moving plate (730).

6. A leak tester for a trunk lid as set forth in claim 2, wherein: The airtight detection water tank (20) is provided with a plug assembly (50), the plug assembly (50) is used for plugging the hole (410) of the automobile accessory back cover (40), and the plug assembly (50) is arranged on the lifting plate (210).

7. A leak tightness testing tool for a trunk lid of a vehicle as set forth in claim 6, characterized in that: The plug assembly (50) comprises a push-pull type quick clamp (510) fixedly arranged in the airtight detection water tank (20), and the telescopic end of the push-pull type quick clamp (510) is connected with a plug (520), the plug (520) corresponds to the hole (410).

8. A leak tightness testing tool for a trunk lid of a vehicle as set forth in claim 1, wherein: The airtight detection base (30) is provided with a sealing ring (330) abutting with the automobile accessory back cover (40), and the airtight cavity (340) is located in the sealing ring (330).

9. A leak tightness testing tool for a trunk lid of a vehicle as set forth in claim 1, wherein: The gas conveying channel (320) is provided with a connecting joint (300) at one end away from the airtight cavity (340).

10. A leak tightness testing tool for a trunk lid of a vehicle as set forth in claim 1, wherein: The airtight detection water tank (20) is provided with a faucet (200) for draining water.

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