JPH074919B2 - Printing machine for liquid crystal display - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing machine, and more particularly to a printing machine for printing characters, numbers and figures on a liquid crystal display device.

[Conventional technology]

The conventional octopus printing machine is a dedicated machine only for printing, and does not have a cleaning mechanism for an object to be printed.

[Problems to be Solved by the Invention]

Therefore, there is a problem in that the finish quality of printing is deteriorated due to stains on the printing surface, dust, and the entrainment of glass chips.

An object of the present invention is to provide a printer for a liquid crystal display device, which can automatically remove foreign matter such as dirt, dust, and glass chips attached to a material to be printed immediately before printing to obtain a clean printing surface. .

[Means for Solving the Problems]

In order to achieve the above object, in the present invention, in a printer for liquid crystal display device, the printer comprises a cleaner unit for removing foreign matter from the surface of the substrate, and the cleaner unit is a Immediately before printing, the printing machine for liquid crystal display device removes foreign matter from the surface of the printing material, and further, the cleaner unit has a roller, the roller is in contact with the surface of the printing material, and the foreign matter is rotated while rotating. And a liquid crystal display printer using the cleaner unit as an adhesive rubber roller. Further, the foreign matter is eliminated after the positioning of the printed material is completed. A printing machine for the liquid crystal display device was prepared.

[Action]

According to the present invention, since it is possible to eliminate foreign matter or the like on the surface of the printing object immediately before printing, it is possible to print on a clean surface,
The display quality of the liquid crystal display device can be improved.

〔Example〕

In the following examples, a cleaner unit consisting of an adhesive rubber roller and an adhesive rubber roller driving means that rotatably holds the adhesive rubber roller and reciprocates immediately before printing so that the adhesive rubber roller rotates in contact with the surface of the printed material is provided. A printer for a liquid crystal display device having the same is disclosed.

An embodiment of the present invention will be described below with reference to FIG. The octopus printing machine main body 1 includes a suction base 3 that suction-holds an object to be printed 2 such as a liquid crystal display element, an octopus holding member 4 that moves up and down by means not shown, and a silicon octopus 5 fixed to the lower end of the octopus holding member 4. Have and. The above is a conventionally known structure.

In the present invention, a cleaner unit 6 is attached to the tacho printing machine main body 1. The cleaner unit 6 includes an air cylinder 7
And an adhesive rubber roller 8 rotatably attached to the operating rod 7a of the air cylinder 7. A photoelectric switch 9 is provided in the tacho printing machine body 1. This photoelectric switch 9 is installed as a safety device for avoiding the risk of the adhesive rubber roller 8 moving forward while loading the printing object 2 and positioning it on the suction base 3.

Next, the operation will be described with reference to FIG. First, as shown in FIG. 3A, when the print object 2 is loaded and positioned on the suction base 3, the vacuum of the suction base 3 works, and the print object 2 is fixed to the suction base 3 by suction. In this state, when the operating rod 7a of the air cylinder 7 reciprocates as shown in FIG. 2B, the adhesive rubber roller 8 comes into contact with the surface of the material to be printed 2 and passes therethrough while rotating. As a result, foreign matters such as dirt, dust, and glass chips on the printing surface of the printing object 2 are adhered to the adhesive rubber roller 8 and removed. When the return of the actuating rod 7a is confirmed, the silicon tacho 5 descends and presses the upper surface of the printing target 2 to perform printing as shown in FIG. While the printing is completed, the silicon octopus 5 rises, and further retracts to pick up ink, the printed substrate 2 printed as shown in FIG. 3D is unloaded. Then, when the loading of the next substrate 2 is completed again, the silicon tacho 5 also returns to the initial position, and the series of operations is repeated. This series of operations is sequence-controlled without interfering with each other.

As described above, since dirt, dust, and glass chips on the surface of the object to be printed 2 are wiped off by the adhesive rubber roller 8, printing is performed, so that a clean printed surface is obtained and the yield is improved. When the material to be printed 2 is made of a glass material such as a liquid crystal display element, the rapid deterioration of the ink plate caused by the adhesion of the glass chip and the damage of the ink scraping blade are eliminated, and the operation rate is improved. .

Needless to say, the adhesive rubber roller 8 needs to be replaced from time to time because it is soiled by repeated operations.

As is clear from the above description, according to the tacho printing machine that is the embodiment of the present invention, the adhesive rubber roller and the adhesive rubber roller are rotatably held, and the adhesive rubber roller rotates in contact with the surface of the printing object. As described above, since the cleaner unit including the adhesive rubber roller driving means that reciprocates immediately before printing is provided, a clean printing surface can be obtained without foreign matter such as dirt, dust, and glass chips being caught, and quality and yield are improved. .

〔The invention's effect〕

According to the present invention, it is possible to eliminate foreign matters and the like on the surface of an object to be printed immediately before printing, and it is possible to print on a clean surface. Therefore, the printing quality and the yield are improved, and further, the display quality of the liquid crystal display device and the manufacturing yield are improved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 (a).
(B) (c) (d) is explanatory drawing of an operating state. 1 ... Tacho printing machine main body, 2 ... Printed material, 3 ... suction base, 4 ... tacho holding member, 5 ... silicon tacho, 6 ...
... Cleaner unit, 7 ... air cylinder, 7a ... operating rod, 8 ... adhesive rubber roller, 9 ... photoelectric switch.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuya Tanaka 3673 Hayano, Mobara-shi, Chiba Nisshin Kogyo Co., Ltd. (56) Reference JP-A-53-44212 (JP, A) JP-A-56-13172 ( JP, A) JP 51-61770 (JP, A) Actually opened 57-39732 (JP, U) Actually opened 60-19436 (JP, U) JP-B 57-11124 (JP, B2)

Claims (1)

[Claims] 1. In a printer for a liquid crystal display device, which prints a desired figure on a substrate to be a liquid crystal display device, a suction base for sucking and holding the substrate, and removing foreign matter from the surface of the substrate. A cleaner unit having an actuating rod for moving the rotatable adhesive rubber roller to the position of the object to be printed, which is fixed to the suction base, and the cleaner unit A printing machine for liquid crystal display device, wherein foreign matter is removed from the surface of the substrate to be printed immediately before printing.