TWM485142U - Apparatus for automatically adding printing ink - Google Patents

Abstract

An automatic printing ink adding apparatus using for a screen printing machine is provided. A screen printing machine includes a screen printing plate having a pattern area, and a blade to scrape the plate for defining a scrape area. An automatic printing ink adding apparatus includes an ink adding valve, a moving mechanism, an ink storage and a valve controller. The ink adding valve outputs ink on the screen printing plate. The moving mechanism which is connected to the ink adding valve moves it to spread the ink next to the pattern area and inside the scrape area. The ink storage which is connected to the ink adding valve supplies ink to it. The valve controller which is coupled to the ink adding valve controls the ink output of it.

Description

Ink automatic adding equipment

The present invention relates to an automatic ink adding device, and in particular to an automatic ink adding device applied to a screen printing machine.

The Light Guide Plate (LGP) acts as a key light guiding medium in the backlight module components to direct the light source into a uniform surface light source and provide sufficient light source for the display panel. According to the manufacturing method, the light guide plate can be divided into a printed light guide plate and a non-print light guide plate. The printed light guide plate prints a printing material having a very high scattering effect such as ceria or titania on the bottom surface of the light guide plate by screen printing. Therefore, the total reflection effect can be destroyed by the property of the printing material to absorb and re-diffuse the light source, so that the light propagates in the light guide plate to be evenly distributed in the light-emitting area and emitted on the light-emitting surface of the light guide plate.

By printing the dots on the light guide plate by screen printing, the light guide plate can achieve the effect of guiding light and brightening. In addition, the use of non-absorbent ink to print dots can reduce light loss. Currently in the screen printing process of the light guide plate, usually manually added The ink is on the edge of the screen, however the amount of ink added manually can cause problems. When too much ink is added, it is easy to cause the phenomenon of ink water lines and waste of ink materials. The ink water line will make the light guide plate unevenly emitted and become a defective product. The waste of ink materials increases the cost of production. Conversely, when there is too little ink, there may be a case where there is no ink or a miss when printing. In addition, in the printing process, because the timing of ink addition cannot be controlled, the line technician sometimes forgets to add and causes a missing print, resulting in the production of a defective light guide. There is therefore a need for an apparatus that automatically adds ink to reduce the yield of defective products.

Taiwan Patent No. M380229 discloses a fully automatic screen printing machine. Taiwan Patent No. M267068 discloses a circuit board printing device. A screen printing ink supply device for a screen printing machine is disclosed in Japanese Patent Laid-Open No. Hei 8-1911. Taiwan Patent No. M382904 discloses a structural improvement of a screen printing machine. Taiwan Patent No. I221812 discloses a screen printing method.

The novel creation provides an automatic ink adding device to replace the manual addition of ink in the screen printing process. Ink automatic adding equipment can avoid printing defects caused by manual ink addition.

Other objects and advantages of the novel creation can be further understood from the technical features disclosed in the novel.

In order to achieve one or a part or all of the above or other purposes, an embodiment of the present invention proposes an automatic ink adding device suitable for screen printing machine. The screen printing machine has a screen and a doctor blade. The screen has a pattern area, and the doctor blade is adapted to wipe on the screen to define a wiping area on the screen. The wiping area covers the pattern area. The ink automatic adding device includes an ink adding valve, a moving mechanism, an ink storage tank, and an additive valve controller. An ink addition valve is used to output the ink on the screen. The moving mechanism is coupled to the ink addition valve and is capable of moving the ink addition valve to coat the ink adjacent to the pattern area and within the wiping area. The moving mechanism includes a first shaft pneumatic cylinder and a second shaft pneumatic cylinder. The first shaft pneumatic cylinder is coupled to the ink addition valve to move the ink addition valve on the first axis. The second shaft pneumatic cylinder is coupled to the first shaft pneumatic cylinder to move the first shaft pneumatic cylinder and the ink addition valve on the second axis. The ink reservoir is connected to an ink addition valve for supplying ink to the ink addition valve. The add valve controller is coupled to the ink addition valve to control the ink output of the ink addition valve.

In an embodiment of the present invention, the moving mechanism further includes a first electromagnetic valve, a second electromagnetic valve, and a movement controller. The first solenoid valve is coupled to the first shaft pneumatic cylinder. The second solenoid valve is coupled to the second shaft pneumatic cylinder. The movement controller is coupled to the first solenoid valve and the second solenoid valve for controlling the operation of the first shaft cylinder and the second shaft cylinder.

In an embodiment of the novel creation, the above-described automatic ink adding device further includes an operation interface. The operation interface is coupled to the mobile controller for inputting an instruction to the mobile controller.

In an embodiment of the present invention, the above-described operation interface is also coupled to the add-on valve controller for inputting an instruction to the add-on valve controller.

In an embodiment of the novel creation, the above automatic ink adding device Also includes a blender. The agitator is coupled to the ink reservoir for agitating the ink stored in the ink reservoir.

In an embodiment of the present invention, the above-described automatic ink adding device further includes a first air pressure source. The first source of air pressure is coupled to the ink reservoir to provide the air pressure required to supply ink to the ink addition valve from the ink reservoir.

In an embodiment of the present invention, the first air pressure source is further coupled to an add-on valve controller for providing the air pressure required to add a valve controller to control the ink addition valve.

In an embodiment of the novel creation, the moving mechanism can move the ink addition valve to the outside of the wiping area.

In an embodiment of the novel creation, the first axis in the ink automatic adding device is perpendicular to the second axis.

Based on the above, the ink automatic adding device created by the novel can replace the step of manually adding ink in the screen printing process, and can effectively control the amount of ink and the timing of adding. Ink automatic adding equipment avoids adding too much ink, thus reducing ink waste and reducing the cost of printing. The ink automatic adding device can also avoid the bad phenomenon of the ink water line caused by adding too much ink. In addition, the automatic ink adding device can avoid too few inks to be manually added, and thus there is no ink or missing printing when printing. The ink is automatically dosed by the automatic adding device, and there is no need to worry about the lack of printing caused by the technicians of the production line forgetting to add during the printing process.

The above described features and advantages of the present invention will become more apparent and understood from the following description.

100‧‧‧Ink automatic adding equipment

110‧‧‧Ink Addition Valve

120‧‧‧Mobile agencies

122‧‧‧First Axis Air Cylinder

122a‧‧‧First solenoid valve

124‧‧‧Second shaft pneumatic cylinder

124a‧‧‧Second solenoid valve

126‧‧‧Mobile controller

130‧‧‧Ink storage bucket

132‧‧‧Agitator

134‧‧‧Air pressure source

140‧‧‧Adding valve controller

150‧‧‧Operator interface

200‧‧‧ screen printing machine

210‧‧‧Web Edition

220‧‧‧ scraper

212‧‧‧Picture area

214‧‧‧ wiped area

216‧‧‧ mesh

A‧‧‧A point

B‧‧‧B

C‧‧‧C

X‧‧‧first axis

Y‧‧‧second axis

1 is a schematic diagram of an ink automatic adding device applied to a screen printing machine in accordance with an embodiment of the present invention.

2 is a schematic diagram of the operation of an automatic ink adding device according to an embodiment of the present invention.

The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is used to illustrate that it is not intended to limit the creation of this novel.

1 is a schematic diagram of an ink automatic adding device applied to a screen printing machine in accordance with an embodiment of the present invention. Referring to FIG. 1, the automatic ink adding apparatus 100 of the present embodiment is applied to a screen printing machine 200. The screen printer 200 has a screen 210 and a scraper 220. The screen 210 has a pattern area 212, wherein the mesh 216 of the pattern area 212 is, for example, an area corresponding to the distribution point of the light guide plate. The doctor blade 220 is adapted to wipe over the screen 210 to define a wiper zone 214 on the screen 210. The doctor blade 220 scrapes the ink evenly into the mesh 216 of the pattern area 212 to complete the printing operation. In addition, the wiping area 214 covers the pattern area 212, that is, the wiping area 214 is larger than the pattern area 212. In order to make the ink in the pattern area 212 more uniform, the embodiment first applies the ink to the image. Outside the case area 212. Next, the doctor blade scrapes the ink from the wiping area 214 into the pattern area 212. The doctor blade 220 can remix the ink to reduce the density unevenness of the ink due to the difference in ink application time.

The automatic ink adding apparatus 100 of the present embodiment includes an ink adding valve 110, a moving mechanism 120, an ink storage tub 130, and an additive valve controller 140. The ink addition valve 110 is adapted to apply ink to the screen 210. When the ink addition valve 110 is opened, the ink is output on the screen 210. The moving mechanism 120 is coupled to the ink addition valve 110 and is capable of moving the ink addition valve 110 to apply ink to the pattern area 212 and within the wiping area 214 to facilitate subsequent scraping of ink into the pattern area 212 by the doctor blade 220. The ink storage tub 130 is coupled to the ink addition valve 110 for supplying ink to the ink addition valve 110. The add valve controller 140 is coupled to the ink addition valve 110 for controlling the ink output of the ink addition valve 110, that is, the addition valve controller 140 can control the switching state of the ink addition valve 110. The addition valve controller 140 can, for example, control the magnitude of the pressure of the ink addition valve 110 and the number of seconds of opening of the ink addition valve 110 to adjust the amount of ink output. The addition valve controller 140 can accurately control the amount of ink output per time to avoid excessive or too little ink in the manual addition, no waste of ink due to the addition of too much ink, and no leakage due to the addition of too little ink. The ink automatic adding device created by the novel can replace the step of manually adding ink in the screen printing process, so that the printing failure caused by manual ink addition can be avoided.

In more detail, the moving mechanism 120 includes a first shaft pneumatic cylinder 122 and a second shaft pneumatic cylinder 124. The first shaft pneumatic cylinder 122 is coupled to the ink addition valve 110 to move the ink addition valve 110 on the first axis X. The second shaft pneumatic cylinder 124 is connected to the first shaft The pneumatic cylinder 122 moves the first shaft cylinder 122 and the ink addition valve 110 on the second axis Y. The moving mechanism 120 can move the ink addition valve 110 on the first axis X and the second axis Y. The ink addition valve 110 can apply ink to the outside of the pattern area 212 of the screen 210 and the inside of the wiping area 214 through the moving mechanism 120.

More specifically, the moving mechanism 120 described above further includes a first solenoid valve 122a, a second solenoid valve 124a, and a movement controller 126. The movement controller 126 is coupled to the first solenoid valve 122a and the second solenoid valve 124a. The first solenoid valve 122a is coupled to the first shaft cylinder 122. The second solenoid valve 124a is coupled to the second shaft cylinder 124. The movement controller 126 can control the operation of the first shaft cylinder 122 and the second shaft cylinder 124 by controlling the first solenoid valve 122a and the second solenoid valve 124a, respectively.

Next, please refer to Figure 2. 2 is a schematic diagram of the operation of an automatic ink adding device according to an embodiment of the present invention. When the ink is not applied, the moving mechanism 120 can move the ink addition valve 110 out of the wiping area 214, such as the position of point A on FIG. 2, to prevent the ink addition valve 110 from causing interference in the path of travel of the blade 220. In this embodiment, the position of point A only needs to be located outside the wiping area 214. In this embodiment, the position of point A is not limited. When ink application is to be performed, first, the moving mechanism 120 first moves the ink addition valve 110 from point A to point B. Point B is located beside the pattern area 212 of the screen 210 and is located within the wiping area 214. After the ink addition valve 110 reaches point B, the ink addition valve 110 is then turned on to output the ink. At this time, the moving mechanism 120 simultaneously moves the ink addition valve 110 to the C point along the second axis Y. The output ink uniformly presents a long stripe distribution between points B and C, allowing the scraper 220 It is only necessary to move in one direction (perpendicular to the strip of ink) to evenly distribute the ink into the pattern area 212 of the screen 210 and scrape the ink into the mesh 216 of the pattern area 212. In addition, the travel of the moving mechanism 120 between point B and point C may vary with the size of the pattern area 212 of the screen 210. That is, it is not necessary to change the machine table due to the size of the pattern area 212, and it is only necessary to adjust the setting parameters of the ink automatic adding device 100. In this embodiment, the first axis X is perpendicular to the second axis Y. Next, after the ink coating is completed, the ink addition valve 110 is closed first. The moving mechanism 120 then retracts the ink addition valve 110 back out of the wiping area 214, for example, back to point A. Then, the blade is moved to the right from the leftmost side of the wiping area 214 on FIG. 2, sweeping the entire wiping area 214, and the ink is evenly scraped into the mesh 216 of the pattern area 212 to complete the screen printing operation. The creation ink automatically adds a fully automated ink addition process to the device 100, which avoids the problem of manually forgetting to add.

Next, please refer to Figure 1. The ink automatic adding device 100 of the embodiment can further set the operation interface 150. The operation interface 150 is coupled to the mobile controller 126 for inputting instructions to the mobile controller 126. The operating interface 150 is also coupled to the add valve controller 140 for inputting commands to the add valve controller 140. For example, the operation interface 150 can input the number of seconds the first axial cylinder 122 is extended and the number of seconds to be retracted, and the number of seconds to enter the second axis cylinder 124 and the number of seconds to be retracted, and the operation interface 150 will be The above four parameters are transmitted to the movement controller 126, and the movement controller 126 controls the first solenoid valve 122a and the second solenoid valve 124a, respectively. The first solenoid valve 122a activates the first shaft cylinder 122 in accordance with the input parameters, and the second solenoid valve 124a activates the second shaft cylinder 124 in accordance with the input parameters. Therefore, the ink connected to the first shaft cylinder 122 The addition valve 110 is movable on both X and Y axes. In addition, the time at which the ink starts to be added can be input on the operation interface 150 to ensure that the ink is not output until the ink addition valve 110 reaches the fixed point B. The ink addition frequency can also be input on the operation interface 150 to adjust the amount of ink output. The ink adding valve 110 can also be set as a manual switch on the operation interface 150. When the pipeline for cleaning the ink is required, it is convenient to manually control the switching state of the ink adding valve 110 for cleaning.

The ink automatic adding device 100 may further include a stirrer 132 and a gas pressure source 134. The agitator 132 is coupled to the ink storage tub 130, and the agitator 132 is adapted to agitate the ink stored in the ink storage tub 130 to prevent precipitation of particles in the ink, so that the ink in the ink storage tub 130 maintains a uniform state for overall print quality. better. The ink storage tank 130 is further connected to the air pressure source 134. The air pressure source 134 is used to provide the air pressure required for the ink storage tub 130 to supply ink to the ink addition valve 110. When the pressure of the air pressure source 134 is large, the ink addition valve 110 outputs a large amount of ink. When the pressure of the air pressure source 134 is small, the ink addition valve 110 outputs less ink. The air pressure source 134 is also coupled to the add valve controller 140 and in accordance with the pressure gauge readings and pressure settings on the add valve controller 140 to correspondingly provide the air pressure required to control the ink addition valve 110.

In summary, the ink automatic adding device created by the novel replaces the artificially added ink, and can effectively control the amount of ink and the timing of adding. Ink automatic adding equipment avoids adding too much ink, reduces ink waste, and reduces printing costs. The ink automatic adding device can also avoid the bad phenomenon of the ink water line caused by adding too much ink. In addition, the automatic ink adding device can avoid too few inks to be manually added, and there is no ink or missing printing when printing. Timing quantitative application by automatic ink adding equipment Ink, you don't have to worry about the lack of printing when the technicians in the production line forget to add.

However, the above is only a preferred embodiment of the novel creation, and it is not possible to limit the scope of the creation of the novel, that is, the simple equivalent change of the patent application scope and the description of the invention according to the novel creation. And the modifications are still within the scope of this new creation patent. In addition, any of the embodiments or the claims of the present invention are not required to achieve all of the objects or advantages or features disclosed in the novel. In addition, the abstract sections and headings are only used to assist in the search for patent documents and are not intended to limit the scope of the novel creation.

100‧‧‧Ink automatic adding equipment

110‧‧‧Ink Addition Valve

120‧‧‧Mobile agencies

122‧‧‧First Axis Air Cylinder

122a‧‧‧First solenoid valve

124‧‧‧Second shaft pneumatic cylinder

124a‧‧‧Second solenoid valve

126‧‧‧Mobile controller

130‧‧‧Ink storage bucket

132‧‧‧Agitator

134‧‧‧First air pressure source

140‧‧‧Adding valve controller

150‧‧‧Operator interface

200‧‧‧ screen printing machine

210‧‧‧Web Edition

220‧‧‧ scraper

212‧‧‧Picture area

214‧‧‧ wiped area

216‧‧‧ mesh

X‧‧‧first axis

Y‧‧‧second axis

Claims (9)

An automatic ink adding device suitable for a screen printing machine, the screen printing machine having a screen and a scraper, the screen having a pattern area, the scraper being adapted to wipe on the screen to A wiping area is defined on the screen, the wiping area covers the pattern area, and the ink automatic adding device comprises: an ink adding valve for outputting ink on the screen; and a moving mechanism connected to the ink adding a valve and capable of moving the ink adding valve to coat the ink beside the pattern area and in the wiping area, the moving mechanism comprises: a first shaft pneumatic cylinder connected to the ink adding valve to be in a first axis Moving the ink adding valve on the line; and a second shaft pneumatic cylinder connected to the first shaft pneumatic cylinder to move the first shaft pneumatic cylinder and the ink adding valve on a second axis; an ink storage tank connected to The ink adding valve is configured to supply ink to the ink adding valve; and an additive valve controller coupled to the ink adding valve for controlling ink output of the ink adding valve. The ink automatic adding device of claim 1, wherein the moving mechanism further comprises: a first electromagnetic valve coupled to the first axial pneumatic cylinder; and a second electromagnetic valve coupled to the second a shaft cylinder; and a movement controller coupled to the first solenoid valve and the second solenoid valve for controlling operation of the first shaft cylinder and the second shaft cylinder. The ink automatic adding device of claim 2, further comprising: an operation interface coupled to the mobile controller for inputting an instruction to the mobile controller. The automatic ink adding device of claim 3, wherein the operation interface is further coupled to the additive valve controller for inputting an instruction to the additive valve controller. The automatic ink adding device of claim 1, further comprising: an agitator connected to the ink storage tub for stirring the ink stored in the ink storage tub. The automatic ink adding device of claim 1, further comprising: an air pressure source connected to the ink storage tank for providing the air pressure required for the ink storage tank to supply ink to the ink adding valve. The automatic ink adding device of claim 6, wherein the air pressure source is further coupled to the additive valve controller for providing a pressure required by the additive valve controller to control the ink adding valve. The automatic ink adding device of claim 1, wherein the moving mechanism is capable of moving the ink adding valve outside the wiping area. The automatic ink adding device of claim 1, wherein the first axis is perpendicular to the second axis.