JPH01267039A - screen printing machine - Google Patents

Abstract

PURPOSE:To shorten the operation time and to improve the environmental hygiene, with reduced loss of viscous substance, by providing a single or plurality of constant volume discharging means for supplying said viscous substance to a predetermined position on a screen printing plate. CONSTITUTION:A constant volume discharging means 13 of an injector model is provided above a screen printing plate 1. A discharging port 14 of the discharging means 13 is facing to a screen 1A. An actuator 15 provided with an arm 16 holding the discharging means 13 moves the arm 16 in a direction shown by an arrow A. By operating the actuator 15, the discharging means 13 is moved to a predetermined position. This movement may be carried out on the basis of the set program or by a hand switch or foot switch. Depending on the case, the discharging means 13 may be manually moved. When the discharging means 13 reaches the predetermined position, it is operated to discharge viscous substance such as ink etc. by a desired amount, and accordingly, the desired amount of the viscous substance is supplied onto the screen 1A. Then, the general screen printing operation is conducted as usual.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a screen printing machine.

[Conventional technology]

Conventional Art 3 In a screen printing machine, ink is supplied to the screen printing plate by a printing operator using an ink spatula or the like to scoop the ink from a container containing the ink.

This was then carried out by supplying it to a predetermined position on the screen printing plate.

[Problem to be solved by the invention] However, the above method has the following problems.

That is, firstly, the ink is supplied from the container containing the ink to the screen printing plate via an ink spatula.

There is an environmental hygiene problem in that the screen printing machine and the three workers around it are contaminated due to causes such as ink dripping. Secondly, since it is a one-man supply method, it takes two hours and is inefficient. Thirdly, the measurement of the amount to be supplied largely depends on the batch amount of the operator, which tends to cause losses and is uneconomical. Especially 2
The applicant previously developed a device that uses a screen printing machine to apply a viscous substance such as a sample, but when using an extremely expensive viscous substance such as a reagent instead of ink, there is a supply loss. This would be extremely uneconomical.

An object of the present invention is to provide an industrially useful screen printing machine that solves both the sanitary and economical problems of the prior art.

[Means to solve the problem]

In order to achieve the above object, the present invention is characterized in that one or more metering discharge machines are provided to supply a viscous material to a predetermined position on a screen printing plate.

Furthermore, if necessary, an actuator may be provided to move the discharge position of the quantitative discharge machine along the screen printing plate.

[Effect]

As mentioned above, by providing the metering discharge machine, it is possible to quickly supply a predetermined amount of viscous material such as ink directly onto the screen printing plate, reducing the working time by 2 hours.

Environmental hygiene is improved and loss of viscous materials is eliminated.

By providing a plurality of metering dispensers, it is possible to supply desired amounts of the viscous material to different positions on the screen printing plate. Moreover, by storing different viscous substances in each metering discharge machine, it becomes possible to supply predetermined amounts of different viscous substances to different positions on the screen printing plate.

Furthermore, by installing an actuator that moves the discharge position of the metering dispenser along the screen printing plate.

The discharge position of the quantitative discharge machine can be moved to a desired position on the screen printing plate, making it possible to supply the viscous material to the desired position.

〔Example〕

The present invention will be described in detail below with reference to one drawing.

FIG. 1 is a schematic perspective view showing one embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a side sectional view thereof. In Figures 1 to 3, 1 is a screen printing plate consisting of a screen IA and a plate frame IB, 2 is a support, 3 is a base sheet to which a viscous substance such as ink is applied, and 4 is the base material. 9.1 a stage that holds the sheet 3; 5 a lifting mechanism that raises and lowers the stage 4; 6 a doctor; 7 a squeegee; 8 a holding member that holds the doctor 6 and the squeegee 7 and reciprocates horizontally;
0 is a cylinder for raising and lowering the doctor 6 and squeegee 7, respectively. These are the same as conventional screen printing machines, so detailed explanations will be omitted.

In this screen printing machine, above the screen printing plate 1, a syringe-shaped quantitative discharge device 13 is installed at its discharge port 14.
is placed facing the screen IA. 15 is
This is an actuator equipped with an arm 16 that holds a metered amount dispensing device 13, and can move the arm 16 in the direction indicated by the arrow in FIG. As the actuator 15, one using a cylinder or one in which a screw shaft is driven by a motor can be used.

Next, the operation of the above device will be explained. Actuator 15 is actuated to move metering dispenser 13 to a desired position.

This movement may be performed based on settings by a program, or may be performed manually using a hand switch or a foot switch. Further, depending on the case, the metering device 13 may be moved directly by hand. When the metering discharge device 13 reaches a predetermined position and stops, the metering discharge device 13 is operated to discharge a desired amount of viscous material such as ink. This allows the desired amount of viscous material to be deposited on the screen IAJ.
− is supplied to After that, all you have to do is perform 4 normal screen printing operations. In this way, the metering dispenser can move to the desired position and dispense the desired amount of viscous material to that position, so the predetermined amount of viscous material can be quickly dispensed without having to manipulate the surroundings with viscous material. Can be supplied to the specified position.

Moreover, effects such as no generation of viscous substances can be obtained.

Here, the operation of the metering dispenser 13 may be performed manually, that is, by manually pushing the plunger of the metering dispenser to dispense the viscous material, or automatically by an appropriate means. good. Further, the metering dispenser 13 is not limited to a syringe, but any device capable of supplying a fixed amount of liquid, such as a volumetric pump, may be used. Furthermore, - in the above embodiment, the viscous material is discharged with the quantitative discharge machine 13 stopped.

The viscous material is discharged while moving the quantitative discharge machine 13.

It is also possible to supply it on the screen IA in the form of a strip.

f, 1'', when using a syringe-shaped metered dispensing machine.

It is preferable to use a disposable type as it does not require cleaning.

FIG. 4 shows another embodiment of the invention, in which three dispensers 13 are arranged on the screen IA by means of mounting arms 18 fixed in place. . In this embodiment, a plurality of fixed quantity dispensing machines 13 are arranged at different positions on the screen IA, so by operating the fixed quantity dispensing machines 13 at each position as necessary, an appropriate amount of viscosity can be dispensed at different positions. A concentrated substance can be supplied, and the actuator in the embodiment of FIG. 1 can be omitted.

FIG. 5 shows another embodiment of the present invention, in which four barriers 20 are provided on the screens LA, J2 of the screen printing plate 1, and the screens IA are divided into five areas 1a, 1. b.

1c, 1d, 1. Separate into e and apply in each area 8!
The structure is designed to prevent items from mixing with each other. This type of screen printing machine is capable of simultaneously applying different types of viscous materials to the base sheet with one printing operation (one reciprocation of the squeegee), and the details were previously disclosed by the applicant. This is explained in Japanese Patent Application No. 161.346/1982. Each area 1a of this screen printing plate IA
A fixed quantity discharge @13 is placed above 1e (=j) by an arm 18. Reference numeral 21 in FIG.

5 (Each metering dispenser 13 of the tli+ stores a viscous material to be applied to a base sheet (not disclosed) in corresponding areas 1a to 1e. In this embodiment, one screen The desired viscous material can be supplied in a fixed quantity to each of the different areas 1a to 1e of the printing machine, and there is no possibility that the viscous material will be accidentally mixed into another area. In this case, the gas may be supplied to another area by mistake, or may fall into another area during the supply and be mixed in. However, in the two embodiments, such inconvenience does not occur.

FIG. 6 shows yet another embodiment of the invention, in which a plurality of metering dispensers 13 are connected to a single arm 2 of an actuator 23.
4 and divided by barriers 20.
[Screen with 1e] A screen is provided so as to be movable over each area along A. Each metering dispenser 13 accommodates a different viscous material.

In this embodiment, the metering dispenser 13 is connected to the actuator 23.
The desired viscous material can be supplied in a fixed quantity by moving to a desired area and operating the desired fixed quantity dispensing machine 13.

Furthermore, in the embodiments shown in and after FIG. 4, the metering dispenser 13
Needless to say, it is not limited to the syringe shape, and can be modified as appropriate. In addition, in the above embodiments, the fixed amount dispensing device 13 is held directly on the arm of the actuator and the fixed amount dispensing device 13 is moved, but the fixed amount dispensing device is fixed at a fixed position, and only the dispensing part is may be moved by an actuator, and only the discharge position of the quantitative discharge machine may be moved along the screen printing plate.

〔Effect of the invention〕

As explained above, the present invention is equipped with one or more quantitative dispensing machines that supply a viscous material to a predetermined position on a screen printing plate, so ink, etc. is directly applied onto the screen printing plate. It is possible to quickly supply a predetermined amount of viscous material, which shortens working time and improves environmental hygiene.Furthermore, it reduces the loss of viscous material, making it possible to use especially expensive viscous material. This has the effect that the economic benefits are extremely high when doing so.

Furthermore, by providing an acticoator that moves the discharge position of the quantitative discharge machine along the screen printing plate, it becomes possible to supply the viscous material to different positions on the screen printing plate.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing an embodiment of the present invention, FIG. 2 is a plan view thereof, FIG. 3 is a side sectional view thereof, FIGS. 4 and 5,
FIG. 6 is a schematic plan view showing nine other embodiments of the present invention. 1-Screen printing plate, ], ]A-Screen la to l
c-1 area, IB-=print frame, 2-support stand, 3-substrate sheet), 4-=stage, 6-doctor, 7-squeegee, 13 fixed amount discharge machine 11L-discharge 0.15-actuator −
eta, 16-arm, 18-attachment arm, 20-barrier. 21 viscous material permeation section, 23-actuator. Agent Patent Attorney Kyo Matsu ＼

Claims (2)

[Claims] (1) A screen printing machine that includes a screen printing plate and one or more metering dispensers that supply a viscous substance to predetermined positions on the screen printing plate. (2) The screen printing machine according to claim 1, further comprising an actuator that moves the discharge position of the quantitative discharge machine along the screen printing plate.