CN219573371U - Device for testing cavity tightness between curved glass and plastic part and flatness of inner side mounting surface - Google Patents

Abstract

The utility model discloses a device for testing cavity tightness between curved glass and plastic parts and flatness of an inner side mounting surface, which comprises a test pressing mechanism and a test supporting mechanism. According to the utility model, the air pressure leakage test can be automatically performed through the test pressing mechanism and the test supporting mechanism, so that the flatness of the mounting surface of the curved plastic part is detected, the detection cost is reduced, the detection efficiency is improved, and the problems of high cost and low efficiency of the flatness test of the mounting surface of the traditional curved plastic part are solved. The utility model can automatically test through the test pressing mechanism and the test supporting mechanism, avoids misjudgment caused by spot check, avoids missing check of bad products, and solves the problem that the existing cavity can only be inspected in small batches and cannot be tested one by one.

Description

Device for testing cavity tightness between curved glass and plastic part and flatness of inner side mounting surface

Technical Field

The utility model relates to the technical field of testing, in particular to a device for testing cavity tightness between curved glass and plastic parts and flatness of an inner side mounting surface.

Background

After the curved glass and the curved plastic piece are adhered to form a component (hereinafter referred to as a product), a closed cavity is formed between the curved glass and the curved plastic piece, and the tightness of the cavity can directly influence the experience of the product in outdoor use. If leakage occurs, water seepage and the like of the product can occur. At present, the tightness test of the cavity adopts a mode of observing the water seepage point after water is injected through the water injection hole, and the detection mode has the defects of low detection efficiency, only can carry out spot check, is unfavorable for large-scale detection, and the cavity after water injection needs to be dried and cannot be detected for the cavity with the electric element.

In addition, the curved plastic part can deform and warp due to the effect of self stress during injection molding, most of deformation and warp can be corrected and eliminated after the deformation and warp are bonded and installed with curved glass, and deformation and warp which cannot be eliminated can lead to the installation surface of the curved plastic part and tiny gaps during the installation of the curved plastic part, so that the service life of a product is influenced. At present, the flatness test of the installation surface of the curved plastic part can only be measured by a high-precision photoelectric sensor, and the defect of the detection mode is that the cost is high, the detection is needed point by point during the detection, and the detection efficiency is low.

Disclosure of Invention

The utility model provides a novel device for testing the cavity tightness and the inner side mounting surface flatness between curved glass and plastic parts, which aims to solve the problems that the existing sealed cavity can only be inspected in a small batch manner, cavity tests can not be carried out one by one, and the existing curved plastic part mounting surface inner side flatness test cost is high and the efficiency is low.

The utility model is realized by adopting the following technical scheme:

a device for testing cavity tightness between curved glass and plastic parts and flatness of an inner side mounting surface comprises a test pressing mechanism and a test supporting mechanism.

The test pushing mechanism comprises a motor mounting plate, the motor mounting plate is mounted on a bottom platform through a large support column, a motor is vertically mounted on the motor mounting plate, the output end of the motor is connected with a screw pair through a coupler, a moving part of the screw pair is connected with a pushing head mounting plate, and a plurality of elastic pushing heads are mounted on the pushing head mounting plate.

The test supporting mechanism comprises a substrate, a curved surface test standard seat is arranged on the substrate, the substrate is arranged on a pressure-bearing platform through a small supporting column, and a sealing ring is arranged in a sealing groove on a curved surface supporting surface of the curved surface test standard seat; the base plate is provided with a fixed air charging hole and a movable air charging rod which are positioned in the curved surface testing standard seat, the movable air charging rod penetrates through the base plate in a sliding sealing mode and then is driven to lift through a bottom air cylinder, and the bottom air cylinder is installed on a pressure-bearing platform through an air cylinder installing plate (209).

The method comprises the steps of performing tightness test, placing a product to be tested on a curved surface test standard seat, enabling a pressure head to descend and contact the outer surface of the upper side (curved surface glass) of the product under the driving of a motor under elasticity, firmly pressing the product on the curved surface test standard seat, enabling a movable inflation rod to ascend and closely contact an inflation hole on the lower surface of the lower side (curved surface plastic part) of the product under the driving of a cylinder, injecting compressed air into a sealing cavity from the inflation rod through the inflation hole on the product, and enabling the compressed air to leak slightly outwards through a sealing joint between the curved surface glass and the curved surface plastic part, and determining whether the sealing cavity leaks or not by detecting the leakage amount of the compressed air.

And (3) performing flatness test, namely placing a product to be tested on the curved surface test standard seat, enabling the inner side mounting surface of the curved surface plastic part to be in contact with a soft sealing ring arranged in a sealing groove on the curved surface supporting surface of the curved surface test standard seat, enabling an elastic lower pressing head to descend and contact the outer surface of the organic glass of the product under the driving of a motor, enabling the elastic lower pressing head to be pressed down and deform, and firmly pressing the product on the curved surface test standard seat. The curved surface attached to the product on the curved surface test standard seat is a standard curved surface, and the curved surface is consistent with parameters such as the size, the curvature and the like of the installation surface on the inner side of the curved surface plastic part. The product which is deformed and excessively warped and cannot be completely attached to the curved surface supporting surface of the curved surface testing standard seat can form a tiny gap or hole between the inner side of the curved surface plastic part mounting surface and the curved surface supporting surface of the curved surface testing standard seat. Compressed air is injected into the cavity between the curved surface test standard seat and the product and between the curved surface test standard seat and the soft sealing ring through the air filling hole at the bottom of the curved surface test standard seat, and the compressed air can be leaked outwards in a trace amount through the gaps or holes, so that the flatness of the inner side of the installation surface of the curved surface plastic part can be judged by detecting the leakage amount of the compressed air.

Further preferably, a plurality of linear bearings are arranged on the motor mounting plate and around the screw pair, guide posts are arranged in the linear bearings, the upper ends of all the guide posts are connected with the annular plate together, and the lower ends of all the guide posts are connected with the upper surface of the lower pressure head mounting plate; the stable movement of the lower pressure head mounting plate under the drive of the motor is realized.

Further preferably, a sensor bracket is arranged on the bottom surface of the motor mounting plate, an upper positioning unit and a lower positioning unit are arranged on the sensor bracket, and a positioning sheet matched with the upper positioning unit and the lower positioning unit is arranged on the lower pressure head mounting plate; the position detection of the upper and lower strokes of the lower pressure head mounting plate is realized.

Further preferably, a limiting rod is arranged on the bottom surface of the motor mounting plate and used for limiting the lifting limit position of the lower pressure head mounting plate to prevent damage.

Further preferably, the substrate is provided with a peripheral positioning piece outside the curved surface testing standard seat, and the substrate is provided with an inner positioning piece inside the curved surface testing standard seat. The peripheral locating piece and the inner locating piece jointly realize product locating.

Further preferably, the pressure-bearing platform is mounted on the two rails through a sliding block, so that the movement of the test supporting mechanism is realized. The pressure-bearing platform is driven by an external cylinder or a motor.

Further preferably, a sealing cap is arranged at the end part of the movable inflation rod, and the sealing cap forms a static seal between the cavity and the inflation head to prevent gas from leaking from the periphery of the inflation inlet during inflation.

According to the utility model, the air pressure leakage test can be automatically performed through the test pressing mechanism and the test supporting mechanism, so that the flatness of the mounting surface of the curved plastic part is detected, the detection cost is reduced, the detection efficiency is improved, and the problems of high cost and low efficiency of the flatness test of the mounting surface of the traditional curved plastic part are solved.

According to the utility model, the cavity tightness test between the curved glass and the plastic piece can be automatically carried out one by one through the test pressing mechanism and the test supporting mechanism, so that misjudgment caused by spot inspection and missing inspection of bad products are avoided, and the problem that the existing cavity can only be inspected in small batches and cannot be tested one by one is solved.

The utility model has reasonable design and good practical application and popularization value.

Drawings

Fig. 1 shows a schematic overall structure of the present utility model.

Fig. 2 shows a schematic diagram of a test depressing mechanism from a top view.

Fig. 3 shows a schematic view of the test depressing mechanism from the bottom view.

Fig. 4 shows a partially enlarged schematic view of the test depressing mechanism.

Fig. 5 shows an overall schematic diagram of a test support mechanism from a side view.

FIG. 6 is a schematic view of the test support mechanism from the other side.

Fig. 7 shows a top view of the test support mechanism.

Fig. 8 shows a schematic view of a test support mechanism.

FIG. 9 shows a schematic cross-sectional view of the lifting portion of the movable inflation rod.

In the figure: the device comprises a motor mounting plate 101, a motor 102, a shaft coupler 103, a screw rod pair 104, a lower pressure head mounting plate 105, an elastic lower pressure head 106, a large supporting column 107, a linear bearing 108, a guide column 109, a ring plate 110, a sensor bracket 111, an upper positioning unit 112, a lower positioning unit 113, a positioning sheet 114 and a limiting rod 115; 201-substrate, 202-curved surface test standard seat, 203-pressure-bearing platform, 204-small support column, 205-sealing ring, 206-fixed air charging hole, 207-movable air charging rod, 208-bottom cylinder, 209-cylinder mounting plate, 210-pipeline drag chain, 211-peripheral positioning piece, 212-inner positioning piece, 213-slide block, 214-track, 215-sealing cap, 216-air charging through hole, 217-sliding sealing ring.

Detailed Description

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

A device for testing the cavity tightness between curved glass and plastic parts and the flatness of an inner side mounting surface is shown in figure 1 and comprises a test pressing mechanism and a test supporting mechanism.

As shown in fig. 2, 3 and 4, the test depressing mechanism comprises a motor mounting plate 101, the motor mounting plate 101 is mounted on the bottom platform through four large support columns 107, a motor 102 is vertically mounted on the motor mounting plate 101, the output end of the motor 102 is connected with a screw pair 104 through a coupler 103, and the moving part of the screw pair 104 is connected with a lower pressure head mounting plate 105. The motor 102 drives the screw pair 104 to rotate, thereby realizing the up-and-down movement of the moving part of the screw pair 104. Four linear bearings 108 are arranged on the motor mounting plate 101 around the screw rod pair 104, guide posts 109 are arranged in the linear bearings 108, the upper ends of the four guide posts 109 are connected with a ring plate 110 together, the lower ends of the four guide posts are connected with the upper surface of the lower pressure head mounting plate 105, and the four guide posts realize limit guiding function in the up-and-down movement process of the lower pressure head mounting plate 105. A limit rod 115 is arranged on the bottom surface of the motor mounting plate 101 and used for limiting the lifting of the lower pressure head mounting plate 105 to the highest position. The sensor support 111 is installed to motor mounting panel 101 bottom surface, is equipped with upper positioning unit 112 and lower positioning unit 113 on the sensor support 111, is equipped with on the lower pressure head mounting panel 105 with upper and lower positioning unit complex spacer 114, the spacer shows the top stroke when moving to upper positioning unit position department, shows as the low order stroke when the spacer moves to lower positioning unit position department. The bottom surface of the lower press head mounting plate 105 is provided with a plurality of elastic lower press heads 106, and all the elastic lower press heads are arranged in a shape similar to the upper surface of the curved glass.

As shown in fig. 5, 6, 7 and 8, the test supporting mechanism comprises a substrate 201, a curved surface test standard seat 202 is arranged on the substrate 201, the substrate 201 is mounted on a pressure-bearing platform 203 through a plurality of small support columns 204, and a sealing ring 205 is mounted in a sealing groove on a curved surface supporting surface of the curved surface test standard seat 202. The substrate 201 is provided with a fixed air charging hole 206 and a movable air charging rod 207 in the curved surface test standard seat 202, the movable air charging rod 207 passes through the substrate 201 in a sliding sealing mode and then is driven to lift by a bottom air cylinder 208, as shown in fig. 9, the movable air charging rod 207 penetrates out of an air charging through hole 216 preset in the substrate 201, and a sliding sealing ring 217 is arranged between the movable air charging rod 207 and the air charging through hole 216; when the inflatable device is in practical application, the movable inflatable rod is just right opposite to the inflatable hole in the curved plastic part in the product. The movable inflation rod 207 is mounted at its end with a sealing cap 215. The bottom cylinder 208 is mounted to the pressure-bearing platform 203 by a cylinder mounting plate 209. Peripheral positioning pieces 211 are arranged outside the curved surface testing standard seat 202 on the substrate 201. An inner positioning element 212 is disposed on the substrate 201 and located in the curved surface testing standard seat 202. The pressure-bearing platform 203 is mounted on two rails 214 by means of sliders 213. The pressure-bearing platform 203 is driven by an external cylinder or motor to slide on rails so that the product on the curved test standard base 202 is positioned in the lower ram mounting plate 105 in a proper position under the elastic lower ram 106. A pipeline drag chain 210 is arranged outside one track for placing gas circuits and electric pipelines.

After the curved glass and the plastic piece are adhered to form the assembly, the device has two applications of testing the cavity tightness between the curved glass and the plastic piece and the flatness of the inner side installation surface.

When I, when being used for testing the leakproofness of sealed cavity between curved glass and plastic spare, place the product of waiting to test on curved surface test standard seat 202, curved glass up, pressure head 106 descends and contacts the surface of cavity upside (curved glass) under the drive of motor 102 under elasticity, with the firm pressure of cavity on curved surface test standard seat 202, movable inflation rod 207 rises and the inflation hole of close contact cavity downside (curved plastic spare) under the drive of bottom cylinder 208, seal cap 215 forms quiet sealing between cavity and inflation rod, gas leakage from the inflation inlet periphery when preventing to aerify. Compressed air is injected into the cavity from the movable air inflation rod 207 through the cavity air inflation hole, the compressed air can leak outwards in a trace amount through the sealing material between the curved glass and the plastic part, and then whether the sealed cavity leaks is judged by detecting the leakage amount of the compressed air.

The device adopts and has the test supporting mechanism that can fill compressed air, seals the pressurize through the test pushing down the mechanism to the cavity after filling compressed air, and the rethread detects the leakage quantity of compressed air and judges whether sealed cavity leaks to the problem that current cavity only can small batch spot check, can not be cavity test one by one has been solved.

II, when being used for testing the surface flatness of the inner side installation of a curved surface plastic part, the product to be tested is placed on the curved surface test standard seat 202, the inner side installation surface of the curved surface plastic part is contacted with the soft sealing ring 205 installed in the sealing groove on the curved surface support surface of the curved surface test standard seat 202, the elastic lower pressure head 106 descends and contacts the outer surface of the organic glass of the product under the driving of the motor 102, the elastic lower pressure head 106 is pressed and deformed, and the product is firmly pressed on the curved surface test standard seat 202. The curved surface attached to the product on the curved surface test standard seat 202 is a standard curved surface, and the curved surface is consistent with parameters such as the size, the curvature and the like of the installation surface on the inner side of the curved surface plastic part. The product which is deformed and warped excessively and cannot be completely attached to the curved surface supporting surface of the curved surface testing standard seat 202 can form a tiny gap or hole on the inner side of the curved surface plastic part mounting surface and the curved surface supporting surface of the curved surface testing standard seat 202. Compressed air is injected into the cavity between the curved surface test standard seat 202 and the product and between the curved surface test standard seat 202 and the soft sealing ring 205 through the fixed air-filling hole at the bottom of the curved surface test standard seat 202, and the compressed air can slightly leak outwards through the gaps or holes, so that the flatness of the inner side of the installation surface of the curved surface plastic part can be judged by detecting the leakage amount of the compressed air.

The device adopts the test supporting mechanism that has the compressed air that can fill, seals the pressurize through the test pushing down mechanism to the airtight space between curved surface test standard seat and the product after filling compressed air, and the curved surface plastic part installation face roughness is judged to the size of the leakage volume of rethread detection compressed air to the inside roughness test cost of current curved surface plastic part installation face is high, problem with low efficiency has been solved.

In practical application, after the curved glass and the plastic part are adhered into a component, the component is positioned in the testing device, so that the cavity tightness and the flatness of the inner side mounting surface can be tested simultaneously.

Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present utility model and not for limiting the same, and although the detailed description is given with reference to the embodiments of the present utility model, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, and it should be covered by the scope of the claims of the present utility model.

Claims (10)

1. Device of cavity leakproofness and inboard installation face roughness between test curved surface glass and plastic part, its characterized in that: the device comprises a test pressing mechanism and a test supporting mechanism;

the test pushing mechanism comprises a motor mounting plate (101), wherein the motor mounting plate (101) is mounted on a bottom platform through a large supporting column (107), a motor (102) is vertically mounted on the motor mounting plate (101), the output end of the motor (102) is connected with a screw pair (104) through a coupler (103), the moving part of the screw pair (104) is connected with a lower pressure head mounting plate (105), and a plurality of elastic lower pressure heads (106) are mounted on the lower pressure head mounting plate (105);

the test supporting mechanism comprises a base plate (201), wherein a curved surface test standard seat (202) is arranged on the base plate (201), the base plate (201) is installed on a pressure-bearing platform (203) through a small supporting column (204), and a sealing ring (205) is installed in a sealing groove on a curved surface supporting surface of the curved surface test standard seat (202); the base plate (201) is provided with a fixed air charging hole (206) and a movable air charging rod (207) which are arranged in the curved surface test standard seat (202), the movable air charging rod (207) penetrates through the base plate (201) in a sliding sealing mode and then is driven to lift by a bottom air cylinder (208), and the bottom air cylinder (208) is arranged on the pressure-bearing platform (203) through an air cylinder mounting plate (209).

2. The device for testing the cavity tightness and the flatness of the inner mounting surface between the curved glass and the plastic piece according to claim 1, wherein: a plurality of linear bearings (108) are arranged around the screw pair (104) on the motor mounting plate (101), guide posts (109) are arranged in the linear bearings (108), the upper ends of all the guide posts (109) are connected with a ring plate (110) together, and the lower ends of all the guide posts are connected with the upper surface of the lower pressure head mounting plate (105).

3. The device for testing the cavity tightness and the flatness of the inner mounting surface between the curved glass and the plastic piece according to claim 2, wherein: the motor mounting plate (101) bottom surface is installed sensor support (111), be equipped with on sensor support (111) positioning unit (112) and lower positioning unit (113), be equipped with on lower pressure head mounting plate (105) with upper and lower positioning unit complex spacer (114).

4. The device for testing the cavity tightness and the flatness of the inner mounting surface between the curved glass and the plastic piece according to claim 2, wherein: and a limiting rod (115) is arranged on the bottom surface of the motor mounting plate (101).

5. The device for testing the cavity tightness and the flatness of the inner mounting surface between the curved glass and the plastic piece according to claim 4, wherein: and a peripheral positioning piece (211) is arranged outside the curved surface testing standard seat (202) on the substrate (201).

6. The device for testing the cavity tightness and the flatness of the inner mounting surface between the curved glass and the plastic piece according to claim 5, wherein: an inner positioning piece (212) is arranged on the base plate (201) and positioned in the curved surface testing standard seat (202).

7. The device for testing the cavity tightness and the flatness of the inner mounting surface between the curved glass and the plastic piece according to claim 6, wherein: the pressure-bearing platform (203) is arranged on the two rails (214) through the sliding blocks (213).

8. The device for testing the cavity tightness and the flatness of the inner mounting surface between the curved glass and the plastic piece according to claim 7, wherein: the pressure-bearing platform (203) is driven by an external cylinder or a motor.

9. The device for testing the cavity tightness and the flatness of the inner mounting surface between the curved glass and the plastic piece according to claim 8, wherein: the movable inflation rod (207) penetrates out of an inflation through hole (216) preset in the base plate (201), and a sliding sealing ring (217) is arranged between the movable inflation rod (207) and the inflation through hole (216).

10. The device for testing the cavity tightness and the flatness of the inner mounting surface between the curved glass and the plastic piece according to claim 9, wherein: the end part of the movable inflating rod (207) is provided with a sealing cap (215).