Tungsten filament glass heating function testing device

Abstract

The utility model discloses a tungsten filament glass heating function testing device, which comprises a support frame used for bearing and positioning tungsten filament glass, a point light source, a power supply and a screen, the power supply is connected with a connecting wire, one end of the connecting wire is provided with a tungsten filament joint connected with the tungsten filament end part of the tungsten filament glass, and the other end of the connecting wire is provided with a wire clamp. The point light source and the screen are located on the two sides of the supporting frame, and the point light source, the supporting frame and the screen are arranged in an aligned mode. The tungsten filament glass heating function testing device is reasonable in structural design, after a direct-current power supply is connected with a tungsten filament connector to be electrified and heated, a tungsten filament in an interlayer can be thickened under the normal condition, after a point light source penetrates through glass to irradiate, the thickened tungsten filament can be clearly projected on a white curtain, and testing personnel can observe images and easily find abnormal distribution of the tungsten filament; the inspection operation is simple and convenient, and the inspection is efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of glass inspection, in particular to a tungsten filament glass heating function inspection device. Background Art

[0002] In the current automotive glass market, heatable tungsten filament laminated glass has developed rapidly and is deeply loved by the market, with its usage increasing day by day. However, the corresponding heating function of this type of product has also encountered some problems. Most of them are manifested as part of the tungsten filament not being powered on and not heated after installation. Especially in cold winter areas such as Russia, the local ice and snow on the surface of the glass cannot be removed. There are also very few cases where the glass catches fire when powered on. There are certain safety hazards, which in turn affect customer satisfaction and comfort.

[0003] There are some disadvantages in the existing tungsten filament laminated glass inspection methods: 1. When measuring the tungsten filament resistance by means of a heating power supply or a multimeter, the actual measured resistance may be within the standard tolerance range, but one or a small number of tungsten filaments are broken and not powered. This defect cannot be detected by a simple power-on method, and when it is installed and used by the customer, local heating will occur; 2. Measuring each filament with a point-taking temperature measuring gun has too many limitations and is time-consuming and labor-intensive, because each piece of tungsten filament glass has hundreds of tungsten filaments; using a TESTO infrared camera for thermal scanning can only partially show red, yellow, green and other color areas, and dozens of small cross-sections need to be taken for observation, and the boundaries of each color are blurred. It is impossible to distinguish whether there is a break or no heating by color (because the spacing between the tungsten filaments is too small), and there are still great limitations and inapplicability; therefore, the thermal scanning imaging inspection method is not feasible.

[0004] For example, Chinese patent CN117769069A discloses a method for solving the problem of tungsten wire being de-energized after high-pressure treatment of electrically heated laminated glass, which comprises the following steps: 1) identifying the area where the de-energized tungsten wire is located in the product, and marking the position of the de-energized tungsten wire on the product; 2) taking a copper busbar welding template of the same specification as the product and a size of 1:1 with the product, placing it on the product, drawing the copper busbar on the product, and finding the intersection of the copper busbar and the de-energized tungsten wire on the product, which is the insulating position; 3) preheating the insulating position first, and continuing to heat and apply specific pressure to the insulating position after reaching a certain temperature, and continuously observing the tungsten wire projection during the process until the missing tungsten wire projection reappears; then stopping heating, and releasing the pressure after cooling; it identifies the de-energized area by the abnormal spacing of the tungsten wire projection, and the operation is cumbersome. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a tungsten glass heating function testing device, which has simple testing operation and high testing efficiency.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] The tungsten filament glass heating function testing device includes a support frame for carrying and positioning the tungsten filament glass, a point light source, a power supply and a screen. The power supply is connected to a connecting line, and one end of the connecting line is provided with a tungsten filament connector connected to the tungsten filament end of the tungsten filament glass. The point light source and the screen are located on both sides of the support frame, and the point light source, the support frame and the screen are aligned.

[0008] Further:

[0009] It also includes a dark room, in which the point light source, the support frame and the screen are all arranged.

[0010] The invention also comprises a darkroom, wherein the point light source is arranged outside the darkroom, the support frame and the screen are arranged inside the darkroom, and a light hole is arranged in the darkroom corresponding to the point light source.

[0011] The support frame is an inclined support frame that is arranged obliquely.

[0012] The support frame comprises a base and a rotating frame, and the rotating frame is rotatably arranged on the base.

[0013] The point light source is a xenon lamp.

[0014] The power supply is arranged on the base.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The tungsten filament glass heating function testing device has a reasonable structural design. After the DC power supply is connected to the tungsten filament connector and powered on for heating, the tungsten filament in the interlayer will "become thicker" under normal circumstances. After the point light source is irradiated through the glass, the "thickened" tungsten filament will be clearly projected on the white screen. The inspector can observe the image and easily find abnormalities in the distribution of the tungsten filament. The inspection operation is simple and the inspection is efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following is a brief description of the contents and symbols in the drawings of this specification:

[0018] Figure 1 It is a schematic diagram of the testing device of the utility model.

[0019] In the figure:

[0020] 1. Point light source, 2. Optical axis, 3. Tungsten filament glass, 4. Power supply, 5. Connecting wire, 6. Tungsten filament connector, 7. Screen. DETAILED DESCRIPTION

[0021] The specific implementation of the utility model will be further explained in detail below through the description of embodiments with reference to the accompanying drawings.

[0022] like Figure 1 As shown, the tungsten filament glass heating function testing device includes a point light source 1, a power supply 4, a screen 7 and a support frame for carrying and positioning the tungsten filament glass 3; a connecting wire 5 is connected to the power supply, and one end of the connecting wire is provided with a tungsten filament connector 6 connected to the tungsten filament end of the tungsten filament glass, the point light source and the screen are located on both sides of the support frame, and the point light source, the support frame and the screen are aligned.

[0023] The utility model has a reasonable structural design of the tungsten filament glass heating function testing device. After the DC power supply is connected to the tungsten filament joint and energized for heating, the tungsten filament in the interlayer will "become thicker" under normal circumstances. After the point light source is irradiated through the glass, the "thickened" tungsten filament will be clearly projected on the white screen. The inspector can observe the image and easily find the abnormal distribution of the tungsten filament. The inspection operation is simple and the inspection is efficient.

[0024] By using the device of the utility model, before the tungsten filament products enter the market, the parts with abnormal heating function of the tungsten filament can be checked in advance and removed in time, so as to avoid the local non-heating and non-defrosting after installation and use, and avoid the phenomenon of power-on fire, thereby improving customer satisfaction and comfort.

[0025] The utility model also includes a darkroom, in which the point light source, the support frame and the screen are all arranged; or the point light source is arranged outside the darkroom, the support frame and the screen are all arranged in the darkroom, and the darkroom is provided with a light hole corresponding to the point light source to form an optical axis 2 to illuminate the tungsten glass.

[0026] The point light source is a xenon lamp; through experimental tests of various light sources, it was found that the light sources of ordinary incandescent lamps, LED lamps, strong flashlights, HZ-II optical distortion meters, etc. are all dim, and can only show the thickness of the shower, but cannot clearly project the state of the tungsten filament. It was finally confirmed that only the xenon light source of the point light source instrument can clearly present the distribution state, and combined with the characteristic of the tungsten filament "becoming" thicker after being powered on and heated, the presentation will be more obvious; at the same time, it is very easy to operate, just replace the original optical distortion meter with a point light source instrument in the optical inspection area of ​​the final packaging inspection, and place the product to be tested on the optical inspection vehicle and connect the heating power supply. It can continue to be compatible with resistance test items, HUD inspection items, and optical distortion inspection items.

[0027] The support frame is an inclined support frame that is arranged obliquely; further, the support frame includes a base and a rotating frame, the rotating frame is rotatably arranged on the base, the rotating frame can rotate at an angle that is convenient for the operation of upper and lower parts, the power supply is arranged on the base, and the structure is compact.

[0028] The power supply is a direct current power supply, which is an adjustable direct current power supply and has a small size and can be placed at the bottom of the inspection support frame.

[0029] The specific inspection process is:

[0030] In a dark indoor environment, turn on the point light source device, place the tungsten glass to be tested on the support frame, make the optical axis of the point light source (xenon lamp) basically flush with the center of the tungsten glass, the distance between the point light source and the support is R1, the distance between the support and the screen is R2, R1≈R2≈4m;

[0031] Connect the positive and negative connecting wires of the DC power supply to the external tungsten wire connector of the glass, turn on the DC power switch, and start powering on;

[0032] The point light source beam will project the tungsten filament glass completely onto the screen in the form of a surface. The tungsten filament appears clearly. By observing the distribution of the tungsten filament on the entire glass surface projection, any abnormality can be easily seen.

[0033] The above is only an explanation of the preferred embodiments of the present invention. The above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0034] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A tungsten glass heating function testing device, comprising a support frame for carrying and positioning tungsten glass, characterized in that: It also includes a point light source, a power supply and a screen. The power supply is connected to a connecting wire, one end of the connecting wire is provided with a tungsten wire connector connected to the tungsten wire end of the tungsten wire glass. The point light source and the screen are located on both sides of the support frame, and the point light source, the support frame and the screen are aligned.

2. The tungsten glass heating function testing device as claimed in claim 1, characterized in that: It also includes a dark room, in which the point light source, the support frame and the screen are all arranged.

3. The tungsten glass heating function testing device as claimed in claim 1, characterized in that: The invention also comprises a darkroom, wherein the point light source is arranged outside the darkroom, the support frame and the screen are arranged inside the darkroom, and a light hole is arranged in the darkroom corresponding to the point light source.

4. The tungsten glass heating function testing device as claimed in claim 1, characterized in that: The support frame is an inclined support frame that is arranged obliquely.

5. The tungsten glass heating function testing device as claimed in claim 1, characterized in that: The support frame comprises a base and a rotating frame, and the rotating frame is rotatably arranged on the base.

6. The device for testing heating function of tungsten glass as claimed in claim 1, characterized in that: The point light source is a xenon lamp.

7. The device for testing heating function of tungsten glass as claimed in claim 5, characterized in that: The power supply is arranged on the base.

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