Automatic detection tool for air tightness of automobile lampshade

Abstract

The utility model relates to the technical field of automobile lamp production, in particular to an automatic detection tool for air tightness of an automobile lampshade. The device is mainly composed of an opening detection groove, a clamping assembly, a pressure-bearing positioning assembly and an air tightness detection assembly, the pressure-bearing positioning assembly comprises a carrier plate, a vertical push rod, a pressure-bearing unit and a flow guide pipe, the pressure-bearing unit comprises a cylinder body, an oil cavity is arranged in the cylinder body, a piston block is limited in the oil cavity in a sliding mode, and a piston rod is fixed at the top end of the piston block. A pressure-bearing head is fixed to the top end of the piston rod, the exposed rod body of the piston rod is sleeved with a compression spring, the vertical push rod is used for driving the pressure-bearing unit to conduct preliminary position adjustment, the position of the pressure-bearing head of the pressure-bearing unit can be automatically and accurately adjusted through the hydraulic transmission characteristic when the pressure-bearing head of the pressure-bearing unit bears pressure, and lampshades of different shapes are reliably supported; meanwhile, the air tightness detection assembly can monitor the pressure condition borne by the automobile lampshade at any time, and the situation that the automobile lampshade is damaged due to too large pressure is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile lamp production, especially to an automobile lampshade airtightness automatic detection tool. BACKGROUND

[0002] The automobile lampshade airtightness automatic detection tool mainly reflects the following aspects: 1) provide stable and reliable test environment: the tool fixture can accurately fix the measured product, i. e. the automobile lampshade, to prevent detection errors caused by product movement or shaking during testing. At the same time, the tool effectively isolates external air through its sealing structure, ensuring the airtightness of the test environment, thereby avoiding the influence of external factors on the detection results. 2) improve detection efficiency: the tool fixture can quickly and accurately position the measured product, reducing the time and difficulty of manual operation. The tool can also be integrated with automatic detection equipment to realize automatic detection, further improving detection efficiency and reducing labor costs. 3) realize automatic control: the automobile lampshade airtightness automatic detection tool can realize automatic detection control through the control device. The operator can operate through the display screen and control buttons on the control device. 4) accurate detection: the precise airtightness parameter instrument in the tool automatically detects the pressure difference of the gas filled in the automobile lampshade within the pressure maintaining time, finally completing the airtightness detection. This detection method can accurately judge whether the sealing performance of the automobile lampshade is qualified.

[0003] The existing automobile lampshade airtightness detection tool has the following deficiencies in use: first, it cannot provide reliable support for lampshades of different shapes; second, it cannot monitor the pressure received by the automobile lampshade at all times, avoiding damage to the automobile lampshade caused by excessive pressure. Therefore, it needs to be optimized and improved. UTILITY MODEL CONTENTS

[0004] The utility model aims at overcoming the above problems in the prior art and provides an automobile lampshade airtightness automatic detection tool.

[0005] To achieve the above technical purposes and effects, the utility model is implemented by the following technical solutions:

[0006] An automobile lampshade airtightness automatic detection tool, comprising an open detection groove, a clamping assembly, a pressure-bearing positioning assembly, and an airtightness detection assembly, wherein the side plates of the open detection groove are provided with a plurality of clamping assemblies near the openings, the inside of the open detection groove is provided with a pressure-bearing positioning assembly, and the airtightness detection assembly is installed above the openings of the open detection groove.

[0007] The clamping assembly is composed of a horizontal push rod and a clamping block installed at the movable end of the horizontal push rod.

[0008] The pressure-bearing positioning assembly includes a carrier plate, vertical push rods, pressure-bearing units, and a guide pipe. Several vertical push rods are evenly fixed on the carrier plate, and a pressure-bearing unit is installed at the movable end of each vertical push rod. The pressure-bearing unit includes a cylinder with an oil cavity inside. A piston block slides within the oil cavity, and a piston rod penetrating the top plate of the cylinder is fixed to the top of the piston block. A pressure-bearing head is fixed to the top of the piston rod, and a compression spring is fitted onto the exposed part of the piston rod. The oil cavity is filled with oil, and the bottoms of the oil cavities of two adjacent pressure-bearing units are connected by a guide pipe.

[0009] The airtightness testing component includes a vertical linear guide pair, a horizontal pressure plate, an air pump, a sealing cover, and a sealing ring. The horizontal pressure plate is fixed to the outside of the slider of the vertical linear guide pair. The air pump and the sealing cover are installed on the horizontal pressure plate. The air pump is connected to the top of the sealing cover through an air pipe. The sealing ring is installed at the bottom of the sealing cover. An air pressure sensor is installed on the sealing cover.

[0010] Furthermore, in the aforementioned automated testing fixture for the airtightness of automotive lamp covers, the automotive lamp cover to be tested for airtightness has an irregularly shaped cover at the bottom and an open end at the top.

[0011] Furthermore, in the aforementioned automated testing fixture for the airtightness of automotive lamp covers, the shape of the sealing ring in the airtightness testing component matches the shape of the opening end of the automotive lamp cover.

[0012] Furthermore, in the aforementioned automated testing fixture for the airtightness of automotive lamp covers, the two ends of the compression spring abut against the pressure head and the top plate of the cylinder, respectively.

[0013] Furthermore, in the aforementioned automated testing fixture for the airtightness of automotive lamp covers, the guide tube has a telescopic section capable of adapting to stretching.

[0014] The beneficial effects of this utility model are:

[0015] This utility model has a reasonable structural design, mainly consisting of an opening detection groove, a clamping assembly, a pressure-bearing positioning assembly, and an airtightness detection assembly. The pressure-bearing positioning assembly includes a carrier plate, a vertical push rod, a pressure-bearing unit, and a guide pipe. The pressure-bearing unit includes a cylinder with an oil chamber inside. A piston block slides and is restricted within the oil chamber. A piston rod is fixed to the top of the piston block, penetrating the top plate of the cylinder. A pressure-bearing head is fixed to the top of the piston rod. A compression spring is fitted onto the exposed part of the piston rod. The vertical push rod drives the pressure-bearing unit to make initial position adjustments. The pressure-bearing head of the pressure-bearing unit can automatically and accurately adjust its position using hydraulic transmission characteristics when under pressure. In this way, reliable support can be provided for lamp covers of different shapes, and the pressure uniformity is good. At the same time, the airtightness detection assembly uses a pressure sensor to monitor the pressure on the car lamp cover at all times, avoiding damage to the car lamp cover due to excessive pressure.

[0016] Of course, implementing any product of the present application does not necessarily need to achieve all the advantages above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed for the description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 is a structural schematic diagram of the whole of the present application;

[0019] Figure 2 is a structural schematic diagram of the opening detection groove and the clamping assembly in the present application;

[0020] Figure 3 is a structural schematic diagram of the pressure positioning assembly in the present application;

[0021] Figure 4 is a structural schematic diagram of the pressure bearing unit in the present application;

[0022] Figure 5 is a structural schematic diagram of the air tightness detection assembly in the present application;

[0023] In the drawings, the components represented by each reference numeral are as follows:

[0024] 1-opening detection groove, 2-clamping assembly, 21-horizontal push rod, 22-clamping block, 3-pressure positioning assembly, 31-carrier plate, 32-vertical push rod, 33-pressure bearing unit, 331-cylinder, 332-oil cavity, 333-piston block, 334-piston rod, 335-pressure head, 336-compression spring, 34-flow guide pipe, 4-air tightness detection assembly, 41-vertical linear guide pair, 42-horizontal pressure plate, 43-air pump, 44-sealing cover, 45-sealing ring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] For example, Figures 1-5As shown, the embodiment is a kind of automobile lampshade air tightness automatic detection tool, including opening detection groove 1, clamping assembly 2, pressure positioning assembly 3 and air tightness detection assembly 4, the side plate of opening detection groove 1 is installed with several groups of clamping assembly 2 near opening, pressure positioning assembly 3 is installed in the inside of opening detection groove 1, air tightness detection assembly 4 is installed at the opening of opening detection groove 1.

[0027] In the embodiment, clamping assembly 2 is composed of horizontal push rod 21 and clamping block 22 installed on the movable end of horizontal push rod 21.

[0028] In the embodiment, pressure positioning assembly 3 includes carrier plate 31, vertical push rod 32, pressure unit 33 and flow guide pipe 34, carrier plate 31 is uniformly fixed with several vertical push rods 32, pressure unit 33 is installed on the movable end of vertical push rod 32, and flow guide pipe 34 is connected between adjacent two pressure units 33.

[0029] In the embodiment, air tightness detection assembly 4 includes vertical linear guide pair 41, horizontal pressing plate 42, air pump 43, sealing cover 44 and sealing ring 45, horizontal pressing plate 42 is fixed on the outer side of the slider of vertical linear guide pair 41, air pump 43 and sealing cover 44 are installed on horizontal pressing plate 42, air pump 43 is communicated with the top end of sealing cover 44 through air pipe 43, sealing ring 45 is installed on the bottom end of sealing cover 44, and air pressure sensor is installed on sealing cover 45.

[0030] In the embodiment, the automobile lampshade to be detected for air tightness is provided with a special-shaped cover portion at the bottom and an open end at the top end.

[0031] In the embodiment, the shape of sealing ring 45 in air tightness detection assembly 4 cooperates with the shape of the open end of the automobile lampshade.

[0032] In the embodiment, pressure unit 33 includes cylinder body 331, oil cavity 332 is arranged in the inside of cylinder body 331, piston block 333 is slidably limited in oil cavity 332, piston rod 334 penetrating the top plate of cylinder body 331 is fixed on the top end of piston block 333, pressure head 335 is fixed on the top end of piston rod 334, and compression spring 336 is sleeved on the exposed rod body of piston rod 334.

[0033] In the embodiment, the two ends of compression spring 336 respectively abut against pressure head 335 and the top plate of cylinder body 331.

[0034] In the embodiment, oil liquid is filled in oil cavity 332, the oil cavities at the bottoms of adjacent two pressure units 33 are communicated through flow guide pipe 34, and flow guide pipe 34 has stretchable telescopic section.

[0035] A specific application of the embodiment is: the tool mainly comprises an opening detection groove 1, a clamping assembly 2, a pressure bearing positioning assembly 3 and a gas tightness detection assembly 4, wherein the pressure bearing positioning assembly 3 comprises a carrier plate 31, a vertical push rod 32, a pressure bearing unit 33 and a flow guide pipe 34, the pressure bearing unit 33 comprises a cylinder body 331, an oil cavity 332 is arranged in the cylinder body 331, a piston block 333 is slidably arranged in the oil cavity 332, a piston rod 334 penetrating through a top plate of the cylinder body 331 is fixed to a top end of the piston block 333, a pressure bearing head 335 is fixed to a top end of the piston rod 334, a compression spring 336 is sleeved on an exposed rod body of the piston rod 334, the vertical push rod 32 drives the pressure bearing unit 33 to preliminarily adjust the position, the pressure bearing head 335 of the pressure bearing unit 33 can automatically and accurately adjust the position by using the hydraulic transmission characteristic when bearing pressure, in this way, reliable support can be provided for lampshades with different shapes, the uniformity of pressure bearing at each position is good, and the gas tightness detection assembly 4 can monitor the pressure condition of the automobile lampshade at any time by using the air pressure sensor, so that damage to the automobile lampshade caused by excessive pressure is avoided.

[0036] The preferred embodiments disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details and limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. An automotive lamp cover airtightness automatic detection tool, characterized in that, The utility model provides a kind of opening detection groove, clamping assembly, pressure-bearing positioning assembly and air-tightness detection assembly, the side plate of the opening detection groove is installed with several groups of clamping assembly near opening, the inside of the opening detection groove is installed with pressure-bearing positioning assembly, and the opening of the opening detection groove is installed with air-tightness detection assembly above; The clamping assembly is composed of a horizontal push rod and a clamping block installed on the movable end of the horizontal push rod. The pressure-bearing positioning assembly includes a carrier plate, vertical push rods, pressure-bearing units and flow guide pipes. The air-tightness detection assembly includes a vertical linear guide pair, a horizontal pressing plate, an air pump, a sealing cover and a sealing ring.

2. The automotive lamp housing air tightness automatic detection tooling of claim 1, wherein, The automobile lampshade to be detected for air-tightness is provided with a special-shaped cover portion at the bottom and an open end at the top.

3. The automotive lamp housing air tightness automatic detection tooling of claim 1, wherein, The shape of the sealing ring in the air-tightness detection assembly matches the shape of the open end of the automobile lampshade.

4. The automotive lamp housing air tightness automatic detection tooling of claim 1, wherein, The two ends of the compression spring are respectively in contact with the pressure-bearing head and the top plate of the cylinder.

5. The automotive lamp housing air tightness automatic detection tooling of claim 1, wherein, The flow guide pipe has a telescopic section that can be stretched.

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