KR20060092430A - Screen printing apparatus for cylindrical objects - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen printing apparatus for circular printed matter for printing circular printed matter, such as a condenser or a beverage bottle, including a base 111, a guide rail 120 provided on the base 111, and a circular printed matter (O). A substrate support 130 having first and second pivot rollers 131 and 132 in an idle state to rotatably support the substrate and being installed to be transported along the guide rail 120; The screen 141 having a printed pattern and the upper surface of the screen 141 are installed to be spaced apart from the first and second rotating rollers 131 and 132 by a predetermined interval on the upper portion of the first and second rotating rollers (130). The squeegee 150 presses toward the substrate O placed on the substrate 131 and 132 and pushes the ink placed on the upper surface of the screen 141 to the substrate O surface through the printed pattern, and the squeegee 150 is screen 141. And a squeegee transfer member 160 for transporting along the printed pattern of The connector 180 connecting the substrate support 130 and the squeegee carrier 160 so that the sieve 130 and the squeegee carrier 160 can be simultaneously transferred, the substrate support 130 and the squeegee carrier 160. It consists of one conveyance driving force device 190 for conveying at the same time.

Screen printing device, guide rail, guide bar, rotating roller, squeegee

Description

Screen printing apparatus for cylindrical objects

1 is a view schematically showing the configuration of a conventional screen printing apparatus.

Figure 2 is a side view schematically showing the configuration of a screen printing apparatus for circular printed matter according to a preferred embodiment of the present invention.

FIG. 3 is a plan view showing some components of the screen printing apparatus for circular printed matter shown in FIG. 2.

4A to 4C are views for explaining the printing operation of the screen printing apparatus for circular printed matter shown in FIG.

5 is a side view schematically showing the configuration of a screen printing apparatus for circular printed matter according to another embodiment of the present invention.

FIG. 6 is a plan view illustrating some components of the screen printing apparatus for the circular printed matter illustrated in FIG. 5.

7A to 7C are views for explaining the printing operation of the screen printing apparatus for circular printed matter shown in FIG.

<Description of Symbols for Main Parts of Drawings>

111; base 120; guide rail

130; roller support 131, 132; first and second rotation roller

140; screen assembly 141; screen assembly

150; squeegee 160; squeegee transfer body

170; squeegee lifting device 180; connector

190; feed drive power unit

The present invention relates to a screen printing apparatus, and more particularly, to a screen printing apparatus for circular printed matter for printing a circular printed matter, such as a condenser or a beverage bottle.

In general, the screen printing apparatus sprays ink on the upper part of the screen on which the printed pattern is formed and places the print on the lower part of the screen, and then moves the squeegee of the synthetic resin material to the upper part of the screen to move the ink so that the ink is applied to the printed surface. Device.

Such a screen printing apparatus can be printed regardless of the shape of a to-be-printed object such as a flat type or a cylindrical shape, and can be used for prints of various materials such as paper, plastic, cloth, glass, ceramics, leather, and the like.

1 is a view schematically showing a conventional screen printing apparatus for circular printed matter.

As shown in FIG. 1, a conventional screen printing apparatus for circular printed matter includes a screen assembly 20 including a screen 21 on which a printed pattern is formed and a screen frame 22 supporting the screen 21, and a circular printed matter ( A driving roller 31 and a rotating roller 32 for rotatably supporting o), a motor 41 for rotating the driving roller 31, and a squeegee for bringing the screen 21 into close contact with the printed matter o. It consists of 50.

Here, the screen assembly 20 is installed to be movable left and right on one side of the frame 10 and the upper surface of the screen 21 is sprayed with ink. Then, the driving roller 31 is connected to the motor 41 by the power transmission belt 42 and the rotation roller 32 is installed in the frame (10) in an idle (idle) state.

In the conventional screen printing apparatus for circular printed matters having such a configuration, when the circular printed matter o is placed between the driving roller 31 and the rotating roller 32, the squeegee 50 is moved downward by the operation of the cylinder 60. Descend. The lowered squeegee 50 presses the screen 21 to bring the screen 21 into close contact with the printout o. When the screen 21 is in close contact with the printed matter (o), the motor 41 is driven to rotate the drive roller 32, and at the same time the circular printed matter (o) is rotated.

When the printed matter (o) rotates, the screen assembly 20 is moved by the moving means (not shown) at the same speed as the rotational speed of the printed matter (o), the squeegee 50 is the upper surface of the screen 21 The ink is pushed toward the substrate (o) through the printed pattern of the screen 21 while scratching. Therefore, the pattern corresponding to the printed pattern of the screen 21 is printed on the surface of the circular printed matter o.

By the way, in the conventional screen printing apparatus for circular printed matter, if the rotation of the motor 41 for rotating the driving roller 31 is not constant or unstable, the printed pattern printed on the surface of the printed matter (o) is spread, and the motor 41 Even when the driving of the belt 42 connecting the drive rollers 32 and the drive rollers 32 is not constant, vibration may be generated in the drive rollers 31, thereby reducing print quality.

In addition, since the driving roller 31 and the screen assembly 20 are driven by separate driving means, it is difficult to equally match the rotational speed of the circular printed matter o with the moving speed at which the screen 21 moves.

The present invention has been made in view of the above problems, the same as the rotational speed of the circular printed matter and the moving speed of the screen printed pattern in close contact with the printed material by which the printed pattern can be printed evenly without spreading from the circular printed surface It is an object of the present invention to provide a screen printing apparatus.

Screen printing apparatus for a circular printed matter according to the present invention for achieving the above object, the base, the guide rail provided on the base, the first and second in the idle (idle) state for rotatably supporting the circular printed matter A print support having a rotating roller and installed to be transportable along the guide rail, a screen having a printed pattern spaced apart from the first and second rotating rollers by a predetermined distance on an upper portion of the print support, and having an upper surface of the screen. Presses toward the printed matter placed on the first and second rotating rollers, and pushes the ink placed on the upper surface of the screen to the surface of the printed matter through the printed pattern; and the squeegee can be transported along the printed pattern of the screen. The squeegee carrier and the substrate support and the squeegee carrier can be simultaneously transported. And connecting the lock the printed substrate and the squeegee conveying member connector, comprises a single drive power transfer device for transferring the printed matter the support and squeegee the conveying member at the same time.

According to the present invention, since the substrate support for rotatably supporting the circular substrate and the squeegee carrier for supporting the squeegee for pushing the ink on the upper surface of the screen toward the substrate are simultaneously conveyed by one transfer driving force, the circular substrate is rotated. The speed is the same as the moving speed of the screen-printed pattern that closely adheres to the surface of the print.

The screen printing apparatus for circular printed matter according to the present invention may further include a squeegee lifting apparatus installed on the squeegee conveying body to lift and lower the squeegee.

In addition, the screen printing apparatus for circular printed matter according to the present invention further includes a guide bar installed above the screen, wherein the squeegee conveying body is coupled to the slider to support the slider and the squeegee sliding along the guide bar. It may be provided with a support plate.

In addition, the screen printing apparatus for circular printed matter according to the present invention may further include a plurality of guide bar support shafts installed on the base, and guide bar holders installed on the guide bar support shafts to support the guide bars.

Hereinafter, a screen printing apparatus for circular prints according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 2 is a side view schematically showing the configuration of a screen printing apparatus for a circular print according to a preferred embodiment of the present invention, and FIG. 3 is a plan view showing some components of the screen printing apparatus for a circular printing shown in FIG. 4A to 4C are views for explaining a printing operation of the screen printing apparatus for circular printed matter shown in FIG. 3.

As shown in FIG. 2, the screen printing apparatus for a circular printed matter according to an exemplary embodiment of the present invention includes a base 111, a guide rail 120 provided at an approximately center of an upper surface of the base 111, and a guide rail. A printed matter supporter 130 installed to be transported along the 120, a screen 141 (see FIG. 4A) on which a printed pattern is formed, a squeegee 150 for pushing out ink on the upper surface of the screen 141, and a squeegee 150. Squeegee transfer member 160 for supporting the transfer, the connector 180 for connecting the print support 130 and the squeegee transfer member 160, and the transfer driving force device 190 for transferring the squeegee transfer member 160 It is made, including.

The base 111 is provided with a guide bar support shaft 112 and the screen support shaft 113. Four guide bar support shafts 112 and screen support shafts 113 are provided, one each in front, rear, left and right. Guide bar support shaft 112 is a component for supporting the guide bar 114 for transportably supporting the squeegee transfer body 160, the end of the guide bar 114 is coupled to each guide bar support shaft 112 Guide bar holders 115 are installed so as to be liftable, respectively. The screen support shaft 113 is a component for supporting the screen assembly 140 including the screen 141 so as to be positioned above the print support 130, and each screen support shaft 113 includes a screen assembly 140. The mounting table 116 to be placed is coupled to be liftable. The mounting table 116 and the guide bar holder 115 are adjusted in height in accordance with the size of the printed matter when the size of the printed matter is changed.

The printed matter supporter 130 includes first and second rotating rollers 131 and 132, a roller support bracket 133 for rotatably supporting the rotating rollers 131 and 132, and a guide rail 120. It includes a printed material slider 134 installed on the guide rail 120 to be transported along. The first and second rotating rollers 131 and 132 are components for rotatably supporting the circular printed matter O, as shown in FIG. 3, in the idle state of the roller support bracket 133. To be combined. The roller support bracket 133 is integrally coupled to the print slider 134, and one side of the print slider 134 is provided with a connection bracket 135 to which one side of the connector 180 is coupled.

The screen 141 has a printed pattern through which ink can pass, and is installed inside the screen frame 142 detachably placed on the mounting table 116. After the screen frame 142 is placed on the mounting table 116, one side of the screen frame 142 is pressed to the mounting table 116 by the fixing member 117 to be fixed. The fixing member 117 is coupled to the mounting table 116 by the fixing bolt 118. Ink for printing is placed on the upper surface of the inner screen 141 of the screen frame 142.

The squeegee 150 is a component that presses the upper surface of the screen 141 to push ink placed on the upper surface of the screen 141 through the printed pattern, and is easily transformed and restored as used in a screen printing apparatus. It is made of synthetic resin material. Squeegee 150 is coupled to the squeegee lifting device 170 installed on the squeegee conveying body (160). Squeegee lifting device 170 may be a pneumatic cylinder or a hydraulic cylinder that is commonly used in industrial machinery. A squeegee fixing bracket 171 is provided at the lower end of the squeegee lifting device 170, and the squeegee 150 is fixed to the squeegee fixing bracket 171 by the squeezing fixing member 172 and the fixing bolt 173.

The squeegee transfer member 160 is composed of a support plate 161 to which the squeegee lifting device 170 is coupled, and a plurality of sliders 162 coupled to the support plate 161. The slider 162 slides along the guide bar 114, and a total of four sliders are coupled to the bottom of the support plate 161, one pair of each of the two guide bars 114.

The connector 180 is composed of first and second connection members 181 and 182, and the substrate support 130 and the squeegee transfer device to simultaneously transfer the substrate support 130 and the squeegee transfer device 160 in the same direction. Connect 160 to each other. One end of the first connection member 181 is coupled to the connection bracket 135 provided on the roller slide 134, one end of the second connection member 182 is coupled to the support plate 161, the first and the first Each other end of the two connecting members 181 and 182 is connected to each other.

The transfer driving force device 190 is installed in the guide bar holder 115, one end is coupled to the coupling bracket 163 provided on the support plate 161. The transfer driving force device 190 pushes or pulls the squeegee transfer member 160 so that the print support 130 and the squeegee transfer member 160 are simultaneously transferred. The movement strokes of the printed matter supporter 130 and the squeegee transporter 160 conveyed by the transport driving force device 190 vary depending on the size of the printed matter or the size of the printed pattern. The transfer driving force device 190 may use a pneumatic cylinder or a hydraulic cylinder.

Hereinafter, the printing operation of the screen printing apparatus according to the preferred embodiment of the present invention having the above configuration will be described with reference to FIGS. 3A and 3B.

As shown in FIG. 4A, when the circular printed matter O is placed between the first and second rotating rollers 131 and 132 and ink is sprayed onto the upper surface of the screen 141 on which the printed pattern is formed, the squeegee raising and lowering is performed. Device 170 operates to lower squeegee 150. The lowered squeegee 150 presses the screen 141 downward so that the screen 141 is in close contact with the outer surface of the printed matter (O).

When the screen 141 is in close contact with the surface of the printed matter, the transfer driving force device 190 (see FIG. 2) is operated to transfer the printed matter supporter 130 and the squeegee conveyer 160 in the direction of the arrow as shown in FIG. 4B. At this time, the friction force is applied between the screen 141 and the printed matter (O) and the friction force is also applied between the printed matter (O) and the first and second rotating rollers (131, 132), respectively, and the printed matter (O) is clockwise. And the first and second rotating rollers 131 and 132 rotate counterclockwise. At the same time, the ink on the screen 141 is pushed downward by the squeegee 150 to pass through the printed pattern and then adheres to the surface of the printed matter. Accordingly, a pattern corresponding to the printed pattern of the screen 141 is formed along the surface of the printed matter (O).

When the printing on the circular substrate (O) is completed and the substrate support 130 and the squeegee carrier 160 are stopped, as shown in FIG. 3C, the squeegee lifting device 170 operates to raise the squeegee 150. do. Accordingly, the squeegee 150 is separated from the upper surface of the screen 141, and the screen 141 is separated from the printed matter O. FIG.

On the other hand, Figure 5 is a view schematically showing a screen printing apparatus for a circular print according to another embodiment of the present invention.

As shown in FIG. 5, the screen printing apparatus for a circular printed matter according to another embodiment of the present invention includes a guide bar supported by a base 111 ′ and a guide bar support shaft 112 ′ provided at the base 111 ′. 114 ', a guide rail 120' provided on the base 111 ', a substrate support 130' for rotatably supporting circular printed matter, a screen 141 '(see FIG. 7A) and a screen frame ( 142 '), a screen assembly 140', a squeegee 150 'for pushing ink on the upper surface of the screen 141', a squeegee lifting device 170 'for elevating the squeegee 150', and a squeegee raising and lowering. A connector 180 'that connects the squeegee carrier 160' installed in the guide bar 114 'to support the apparatus 170', and the substrate support 130 'and the squeegee carrier 160'. And a conveyance driving force device 190 'for conveying the squeegee conveyer 160'.

Among the components constituting the screen printing apparatus for a circular print according to another embodiment of the present invention as described above, the rest of the configuration except for the print support 130 ′ is the same as the screen printing apparatus according to the preferred embodiment.

The substrate support 130 ′ includes a substrate slide 131 ′ installed to be transported to the guide rail 120 ′, a roller support 132 ′ coupled to an upper surface of the substrate slide 131 ′, and a roller support 132. It includes a rotating roller 133 'installed in an idle state on the upper portion'). As shown in FIG. 6, the rotation roller 133 ′ is coupled to the roller support 132 ′ and the other end thereof is opened so that the cylindrical printed matter may be fitted. One side of the print slider 131 'is provided with a connection bracket 134' to which one end of the connector 180 'is coupled.

Hereinafter, the printing operation of the screen printing apparatus for circular prints according to another embodiment of the present invention will be described with reference to FIGS. 7A to 7C.

As shown in FIG. 7A, when the cylindrical printed material O 'is inserted into the rotation roller 133' and ink is placed on the upper surface of the screen 141 ', the squeegee lifting device 170' operates to operate the squeegee 150 '. Is lowered to bring the screen 141 'into close contact with the surface of the printed matter O'.

When the screen 141 'is brought into close contact with the surface of the printed matter O', as shown in FIG. 7B, the transfer driving force device 190 ′ (see FIG. 5) operates to operate the substrate support 130 ′ and the squeegee conveyer 160. ') Is conveyed in the direction of the arrow. At this time, a frictional force is applied between the screen 141 'and the outer surface of the printed matter O', between the inner surface of the printed matter O 'and the outer surface of the rotating roller 133', so that the printed matter O 'and the rotating roller ( 133 ') rotates in the same clockwise direction. At the same time, the ink pushed by the squeegee 150 'passes through the printed pattern of the screen 141' and adheres to the outer surface of the printed matter O 'so that the printed matter O' is attached to the printed pattern of the screen 141 '. The corresponding pattern is formed.

When the printing is completed and the substrate support 130 'and the squeegee carrier 160' are stopped, as shown in FIG. 7C, the squeegee 150 'is raised so that the screen 141' is outside of the substrate O '. Depart from the side.

According to the present invention described above, since the substrate support for rotatably supporting the circular substrate and the squeegee carrier for supporting the squeegee for pushing the ink on the upper surface of the screen toward the substrate are simultaneously conveyed by one conveying driving force device, the circular substrate is printed. The speed of rotation and the speed of movement of the squeegee in close contact with the screen are equal Thus, the printed pattern can be printed evenly without spreading on the circular printing surface.

In addition, according to the present invention can increase the printing speed compared to the prior art can improve the productivity.

As mentioned above, although this invention was demonstrated to the several Example as an example, this invention is not limited to the structure and operation as it was shown and described as such. That is, the invention is capable of various changes and modifications within the scope of the claims set forth. Accordingly, all such suitable changes, modifications, and equivalents should be considered to be within the scope of the present invention.

Claims (5)

Base; A guide rail installed on the base; A substrate support having a first and a second rotational roller in an idle state for rotatably supporting a circular printed matter, the substrate support being installed to be transportable along the guide rail; A screen having a printed pattern on the upper part of the printed matter supporter and spaced apart from the first and second rotating rollers by a predetermined interval; A squeegee which presses the upper surface of the screen toward the printed matter placed on the first and second rotating rollers and pushes the ink placed on the upper surface of the screen to the surface of the printed matter through the printed pattern; A squeegee transfer member supporting the squeegee along the printed pattern of the screen to be transportable; A connector for connecting the print support and the squeegee transfer member so that the print support and the squeegee transfer member can be simultaneously transferred; And And a conveyance driving force device for simultaneously conveying the substrate support and the squeegee conveyer. The method of claim 1, And a squeegee elevating device installed on the squeegee conveying member to elevate the squeegee. The method of claim 1, Further comprising a guide bar installed on the top of the screen, And the squeegee conveying member has a slider sliding along the guide bar and a support plate coupled to the slider to support the squeegee. The method of claim 3, wherein A plurality of guide bar support shafts installed in the base; And And a guide bar holder mounted to the guide bar support shaft to support the guide bar. The screen printing apparatus of claim 1, further comprising a guide bar holder. The method of claim 1, A plurality of screen support shafts installed in the base; And And a screen frame installed to support the screen and to be liftable on the screen support shaft.

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