Adhesive dispensing device
A dispensing device and dispensing technology, which is applied to the device and coating of the surface coating liquid, can solve the problems of reducing the viscosity of the glue, affecting the performance of the glue, and the bursting of the hose, so as to reduce the possibility of chemical reaction The effect of reducing the area of the rubber surface and reducing the risk of tube explosion
Active Publication Date: 2016-08-17
NUBIA TECHNOLOGY CO LTD
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Problems solved by technology
However, in the actual dispensing procedure, the minimum dispensing surface of the dispensing needle required for glue at 120°C may still be too large, which still cannot meet the needs of users. Therefore, in order to further reduce the dispensing needle’s glue surface The purpose is to control the heating structure to heat the glue in the dispensing syringe and dispensing needle to 150°C to reduce the viscosity of the glue, thereby reducing the glue outlet surface of the dispensing needle
[0006] However, there are the following defects. Because the temperature of the glue in the dispensing syringe continues to be high, there may be a phenomenon of hose bursting, and the glue maintains a high temperature throughout the dispensing process. The long-term high temperature may also cause the glue to chemically occur. reaction, which in turn affects the performance of the glue
Method used
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[0022] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0023] The invention provides a glue dispensing device, which can be applied to the glue dispensing program in devices such as mobile phones, tablets, cameras, and liquid crystal screens. It can be understood that the application scope of the glue dispensing device is not limited to the above-mentioned several types of equipment, and all equipment that needs to perform glue dispensing procedures can use the glue dispensing device for dispensing.
[0024] This embodiment proposes a dispensing device, such as figure 1 and figure 2 as shown, figure 1 It is a schematic diagram of the combination of the dispensing syringe and the dispensing needle in the dispensing device of the present invention, figure 2 It is a structural schematic diagram of an optional dispensing device in various embodiments of the present inven...
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The invention discloses an adhesive dispensing device. The adhesive dispensing device comprises an adhesive dispensing cylinder, an adhesive dispensing needle, a first heating element and a second heating element, wherein the first heating element is used for heating adhesive inside the adhesive dispensing cylinder, the second heating element is used for heating adhesive inside the adhesive dispensing needle, and the heating temperature of the second heating element for the adhesive inside the adhesive dispensing needle is higher than that of the first heating element for the adhesive inside the adhesive dispensing cylinder. Therefore, the temperature of the adhesive inside the adhesive dispensing needle is made to be higher so as to decrease the area of the adhesive output surface of the adhesive dispensing needle on the one hand, and on the other hand, the temperature of the adhesive inside the adhesive dispensing cylinder is made to be lower so as to reduce the risk of adhesive tube burst and to reduce the occurrence possibility of chemical reaction of the adhesive inside the adhesive dispensing cylinder, and the property of the adhesive is maintained.
Description
technical field [0001] The invention relates to the technical field of glue dispensing, in particular to a glue dispensing device. Background technique [0002] The dispensing device is usually used in the dispensing process between the frame of the mobile phone and the touch screen. At present, as users have higher and higher requirements for the screen-to-body ratio of mobile phones, the frame of the mobile phone is getting narrower and narrower, so the thickness of the glue between the frame of the mobile phone and the touch screen is also put forward higher and higher requirements. At present, even though the thickness of the glue between the frame of the mobile phone and the touch screen has reached below 0.5mm, users still hope to further reduce the thickness of the glue. [0003] However, due to the influence of the viscosity of the glue itself, if the glue dispensing cross section of the dispensing needle of the dispensing device is too small, the dispensing needle ...
Claims
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Login to View More IPC IPC(8): B05C5/00B05C5/02
CPCB05C5/001B05C5/0208
Inventor 王立红
Owner NUBIA TECHNOLOGY CO LTD