Film positioning device
By using a combination technology of an ultrasonic welding torch and four suction cups in the film positioning device, the problems of high equipment manufacturing cost, low positioning efficiency and uneven film when positioning EVA film on glass are solved, and efficient and flat film positioning is achieved.
Patent Information
- Application Number
- CN202323407163.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-14
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2033-12-14
AI Technical Summary
When positioning the EVA film on glass, the prior art has problems such as high equipment manufacturing cost, low positioning efficiency, uneven films, and prone to bubbles and wrinkles.
A thin film positioning device is adopted, which includes a conveyor, a thin film position detection mechanism, a thin film position adjustment mechanism and a thin film position fixing mechanism. The film position fixing mechanism uses an ultrasonic welding gun to fix the film on the glass and adjust the position at the four corners of the film through four suction cups to ensure that there is no gap between the film and the glass.
The film positioning is achieved with a simple structure, low equipment manufacturing cost and high positioning efficiency, avoiding the problems of film unevenness, bubbles and wrinkles, and improving production efficiency.
Smart Images
Figure CN222582876U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of solar cell assembly manufacturing equipment, and particularly relates to a film positioning device for positioning an EVA adhesive film on a glass plate. Background Art
[0002] Solar cell modules are the core components that convert solar energy into electrical energy in photovoltaic power generation, and EVA film is the key material used to realize the encapsulation of solar cell modules. During the process of encapsulating solar cell modules, manufacturers need to position the EVA film because the double-glass solar cell modules need to be sealed with butyl rubber, and the EVA film is inside the butyl rubber and the position accuracy of the EVA film is very high. Since the friction between the EVA film and the photovoltaic glass is very small, the EVA film that has been positioned will be displaced during the conveyor transmission process, so the EVA film needs to be fixed on the glass.
[0003] In the prior art, in order to fix the film on the glass, it is usually necessary to first apply glue to the glass and then glue the film to the glass. This film positioning method needs to be equipped with a complex structure of glue coating mechanism and film pressing mechanism to realize automated production. The equipment manufacturing cost is relatively high, and the positioning efficiency is not very high.
[0004] In addition, due to the soft and thin characteristics of EVA film, how to adjust the position of EVA film on glass is a technical difficulty. If you are not careful, it will easily cause the EVA film to be uneven on the glass, and bubbles and wrinkles will easily appear. For example, in the prior art, some manufacturers have tried to use dozens of suction cups to suck up the EVA film as a whole to adjust the position of the EVA film. This method of adjusting the position will cause the EVA film to separate from the glass as a whole, resulting in air entering between the film and the glass when the film is put back on the glass after the position is adjusted. The entry of air will easily cause bubbles and wrinkles, and ultimately cause the EVA film to be not flat enough on the glass. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a film positioning device, wherein the film position fixing mechanism of the film positioning device has the advantages of simple structure, low equipment manufacturing cost and high efficiency in fixing the film position, so as to overcome the shortcomings of the prior art.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A film positioning device is used to position a film on glass, comprising a conveyor for conveying glass covered with a film, and a film position detection mechanism, a film position adjustment mechanism and a film position fixing mechanism arranged above the conveyor, characterized in that the film position fixing mechanism comprises a welding gun lifting frame and a plurality of ultrasonic welding guns with the gun heads facing downwards installed on the welding gun lifting frame.
[0008] By adopting the above technical solution, after the conveyor conveys the glass covered with the film to the bottom of the film position detection mechanism, the film position detection mechanism first detects the position of the film on the glass. Then, according to the detection result, the film position adjustment mechanism adjusts the position of the film. After the film position is adjusted, the film position fixing mechanism fixes the film on the glass by ultrasonic spot welding. The utility model adopts an ultrasonic welding gun as the film position fixing mechanism, which has a simple structure, low manufacturing cost, and more importantly, this fixing method is highly efficient.
[0009] In a further improvement of the utility model, the film position adjustment mechanism includes a lifting component, four translation drive components installed on the lifting component, and a suction cup installed on each translation drive component, and the four suction cups are respectively located above the four corners of the film. The utility model adopts a film position adjustment mechanism of this structure. When adjusting the film position, only four suction cups are used to suck a few corners of the film, and only the four corners of the film are slightly separated from the glass, while the main body of the film is still covered on the glass. There is no gap between the film and the glass, so it is impossible for air to enter between the film and the glass. When the four corners are put down, since the four corners are at the edge of the film, the air is also easy to discharge. Therefore, when the film position is adjusted, the film position adjustment mechanism of the utility model will not have air enter between the film and the glass, ensuring that the glass on the glass remains flat after the position adjustment, and no bubbles and wrinkles will appear. In addition, since one translation drive component independently drives one suction cup, the translation drive component can be made small and simple, and the entire film position adjustment mechanism is simple in structure and low in manufacturing cost.
[0010] In a specific embodiment of the utility model, the film position detection mechanism is composed of four industrial cameras, and the four industrial cameras are respectively located above the four corners of the film. The film position detection device of the utility model detects the position of the film by photographing the four corners of the film with four industrial cameras respectively, and has the advantages of simple detection mechanism structure and high detection accuracy.
[0011] Therefore, by adopting the above technical solution, the thin film positioning device of the utility model has a simple structure and high positioning efficiency, and has the advantages of reducing the manufacturing cost of the equipment and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model;
[0013] Figure 2 It is a structural schematic diagram of the translation drive assembly of the utility model. DETAILED DESCRIPTION
[0014] like Figure 1 As shown, the positioning and fixing device of the present invention comprises a conveyor 120 , a film position detection mechanism 310 , a film position adjustment mechanism 320 , and a film fixing mechanism 330 . The film position detection mechanism 310 , the film position adjustment mechanism 320 , and the film fixing mechanism 330 are all located above the conveyor 120 .
[0015] The conveyor 120 is used to convey the glass covered with the film to the bottom of the position detection mechanism 310, the film position adjustment mechanism 320 and the film fixing mechanism 330. In the present invention, the conveyor adopts a conveyor belt conveyor. Since it is in the prior art, it will not be described here. Of course, other forms of conveyors can also be used. The film position detection mechanism 310, the film position adjustment mechanism 320 and the film fixing mechanism 330 are all installed on a fixed bracket (not shown in the figure) above the conveyor 120.
[0016] The film position detection mechanism 310 is composed of four industrial cameras 311 fixed on a fixed bracket. The four industrial cameras 311 are respectively arranged above the four corners of the corresponding film, and determine the position of the film on the glass by photographing the positions of the four corners of the film.
[0017] The film position adjustment device 320 includes a lifting module fixed on a fixed bracket, four translation drive components 321 respectively installed at the four corners of the lifting module, and a suction cup 322 installed on each translation drive component 321. Specifically, the lifting module includes a suction cup lifting drive cylinder (not shown in the figure, installed on the fixed bracket) and a suction cup fixing frame (not shown in the figure) installed on the lifting cylinder, and the four translation drive components 321 are respectively installed at the four corners of the suction cup fixing frame, and are respectively located above the four corners of the film.
[0018] Combination Figure 2 As shown, the translation drive assembly 321 includes a transverse linear module 3211 fixed on the suction cup fixing frame, a longitudinal linear module 3212 connected to the slider of the transverse linear module 3211, and a suction cup support plate 3213 connected to the slider of the longitudinal linear module 3212. The suction cup 322 is fixed on the suction cup support plate 3213.
[0019] In this embodiment, both the horizontal linear module 3211 and the vertical linear module 3212 are linear modules driven by motors. Such linear modules have the advantage of driving the suction cup to move to a precise position.
[0020] The film position adjustment mechanism of the utility model drives the suction cup 322 to rise and fall by means of a suction cup lifting driving cylinder, and drives the suction cup 322 to translate by means of a transverse linear module 3211 and a longitudinal linear module 3212 .
[0021] For example Figure 1 As shown, in the present invention, the film position fixing mechanism 330 includes a welding gun lifting frame (not shown) mounted on a fixed bracket and six ultrasonic welding guns 331 mounted on the welding gun lifting frame. The six ultrasonic welding guns 331 are distributed in an array above the film, and the gun heads are all facing downward. After the film position adjustment device 320 adjusts the position of the film on the glass, the six ultrasonic welding guns 331 are driven by the welding gun lifting frame to descend, contact the film, and fix the film on the glass by ultrasonic spot welding. In the present invention, the use of ultrasonic spot welding to fix the glass on the glass has the advantages of simple structure and high fixing efficiency. The welding gun lifting frame of the present invention is also driven by a cylinder, and this driving method has a fast lifting speed and high efficiency.
[0022] In the present invention, since the four suction cups 322 are arranged at the positions above the four corners of the film respectively. When the film position detection mechanism 310 detects that the film is not in the correct position on the glass, the controller of the device will calculate the direction and distance between the current position point of the four corners of the film and the target position point, and then obtain the adjustment position movement trajectory of the four corners of the film. Then, the lifting module in the film position adjustment mechanism 320 will first drive the four suction cups 322 to descend and suck the four corners of the film, and then drive the four suction cups to rise, so that the four suction cups 322 sucking the four corners of the film are slightly separated from the glass. At this time, most of the film is still covered on the glass, and then the horizontal linear module 3211 and the longitudinal linear module 3212 of each translation drive assembly 321 will drive the suction cups to move synchronously according to the adjustment position movement trajectory of the four corners of the film, thereby driving the film to slide on the glass to adjust the film position, but during the movement of the four suction cups, the relative positions of the four suction cups do not change to avoid the film from being stretched and deformed.
[0023] Once the position of the film on the glass is adjusted, the film fixing mechanism 330 fixes the film on the glass using ultrasonic spot welding.
[0024] It can be seen from the above detailed description that the thin film positioning device of the utility model has a simple structure and high positioning efficiency, and has the advantages of reducing equipment manufacturing costs and improving production efficiency.
[0025] The film positioning device of the utility model can not only position the EVA film on the glass, but also be suitable for positioning other films on the glass.
Claims
1. A film positioning device for positioning a film on glass, comprising a conveyor for conveying glass covered with a film, and a film position detection mechanism, a film position adjustment mechanism and a film position fixing mechanism arranged above the conveyor, characterized in that: The film position fixing mechanism comprises a welding gun lifting frame and a plurality of ultrasonic welding guns with gun heads facing downwards, which are installed on the welding gun lifting frame.
2. The film positioning device according to claim 1, characterized in that: The film position adjustment mechanism comprises a lifting component, four translation drive components installed on the lifting component, and a suction cup installed on each translation drive component, wherein the four suction cups are respectively located above the four corners of the film.
3. The film positioning device according to claim 2, characterized in that: The translation driving assembly comprises a transverse linear module and a longitudinal linear module mounted on the transverse linear module, and the suction cup is mounted on the longitudinal linear module.
4. The film positioning device according to claim 1, characterized in that: The film position detection mechanism is composed of four industrial cameras, and the four industrial cameras are respectively located above the four corners of the film.