KR200412044Y1 - Automatic screen printer - Google Patents

Abstract

There is provided an automatic screen printing machine which can stably transfer printing substrates one by one, screen cleaning is performed automatically, and the squeeze is easily attached and detached.

Automatic screen printing machine according to the present invention, the loading unit including a suction valve for adsorbing the printing base material; A seating part on which the print base material is seated; A loading transporting unit for transporting the loading unit such that the printing base material is positioned in the seating unit; A seating transfer part for transferring the seating part to a printing position; A screen mounting portion for mounting the screen on an upper side of the seating portion transferred to the printing position; It is configured to include a printing unit located on the upper side of the screen mounting portion for pressing the paste located on the upper surface of the screen with the printing base material.

By using the automatic screen printing machine according to the present invention, the printing substrate can be loaded one by one more stably, and the seating position of the printing substrate can be precisely adjusted, thereby improving the printing quality regardless of the skill of the operator. Since the bottom of the screen is cleaned every time, the print failure rate can be lowered.

Screen, printing press, loading, vibrating, conveying, cleaning

Description

Automatic screen printer

1 is a perspective view of a conventional screen printing machine.

2 is a front view of a conventional screen printing machine.

3 is a cross-sectional view showing a configuration in which power is transmitted in a conventional screen printing apparatus.

4 is a front view of an automatic screen printing machine according to the present invention.

5 is a side cross-sectional view of an automatic screen printing machine according to the present invention.

6 is a partial side cross-sectional view of an automatic screen printing machine according to the present invention.

7 to 9 are front views sequentially showing a print base material adsorption process of the automatic screen printing machine according to the present invention.

10 is a front view showing the print substrate sheet number detection process of the automatic screen printing machine according to the present invention.

11 is a front view illustrating a printing base material mounting process of the automatic screen printing machine according to the present invention.

12 is a side view illustrating a configuration of a seating transfer part of an automatic screen printing machine according to the present invention.

13 is a plan view of a printing base material applied to the automatic screen printing machine according to the present invention.

14 is a plan view of the mounting portion applied to the automatic screen printing machine according to the present invention.

15 and 16 are side views illustrating a printing process of the automatic screen printing machine according to the present invention.

17 and 18 are side views showing the operation of the cleaning unit applied to the automatic screen printing machine according to the present invention.

19 is a plan view of a printing base material printed by an automatic screen printing machine according to the present invention.

20 is a front view illustrating a process of transferring a printed base material printed by an automatic screen printing machine according to the present invention.

<Description of the symbols for the main parts of the drawings>

100: loading part 200: loading part

300: seating portion 400: loading transfer portion

500: seating transfer part 600: screen mounting part

700: printing unit 800: position detection unit

900: cleaning unit P: printing substrate

S: Screen

The present invention relates to an automatic screen printing machine, and more particularly, to an automatic screen printing machine configured to stably transfer printing substrates one by one, and to perform screen cleaning automatically and to easily attach and detach squeeze.

Screen printing is provided with a screen on which a desired logo or pattern is formed on the upper part of a printing object (hereinafter referred to as a print base material), and by spraying a paste from the upper part of the screen to print the desired logo or pattern on the surface of the print base material. .

Due to this, the printing machine for performing screen printing includes a frame, a jig on which a printing base material is placed at a printing performing position on the frame, a printing performing mechanism installed on the upper frame of the jig so as to be reciprocated left and right, and the printing performing It is provided in the frame part between a mechanism and a printing base material, and has a basic structure which consists of a screen which partially passes the sprayed paste.

Looking at the configuration driven in the above-described conventional printing machine, a means for reciprocating the printing execution mechanism to the left and right is required, to move the screen closer to the printing base material before printing, or to return the screen to its original position after printing is completed. Means are required.

In such a screen printing machine, when the operator mounts the printing base material on the jig and the power is applied to the device, the screen is moved closer to the printing base material, and then the printing execution mechanism is moved in one direction (usually from left to right). And spray the paste.

At this time, a cylinder is applied as a means for moving the printing performing mechanism, and a means such as a motor for moving the screen up and down to form a hinge configuration on one side of the screen to rotate the hinge configuration up and down. Power mechanism is applied.

Thereafter, when printing is completed on the printing base material, the cylinder returns the printing performing mechanism to the original position, and at the same time, the rotating power mechanism also returns the screen to the original position, and then the operator takes out the printing base material from the jig and prints it. It is configured to complete the process.

Hereinafter, a conventional screen printing machine will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a conventional screen printing machine, FIG. 2 is a front view of a conventional screen printing machine, and FIG. 3 is a sectional view showing a configuration in which power is transmitted in a conventional screen printing apparatus.

As shown in FIGS. 1 to 3, the conventional screen printing machine is composed of a frame 10, a printing performing mechanism 20, a screen 30, and a power mechanism 40.

The frame 10 provides a space in which each component for screen printing is to be installed, and a mounting table mounted on the upper body of the body 11 and the upper surface of the body 11 to support the apparatus. 12).

In addition, a jig (2) for mounting the print base material (1) is installed on the lower front of the body, the jig (2) inside to move to the mounting position and work position for mounting the print base material (1) It is installed in conjunction with the transfer mechanism of the.

The printing performing mechanism 20 is installed on the front of the mounting table 12 of the frame 10, the moving plate on the rail 21 horizontally installed in a pair of two on the front of the mounting table 12 to reciprocate left and right ( 22 is coupled to the front surface of the movable plate 22, and the nozzle mechanism 23 for ejecting ink and sweeping the paste sprayed on the screen 30 to one side.

The screen 30 is formed through the upper and lower surfaces of the screen support 31 in order to maintain a stable state of fixing the logo or a variety of patterns to be printed on the printing base material 1, the lower side of the mounting table (12) It is fitted to the holder 32 and installed.

The screen support 31 is installed so that the end portion is hinged to the lower end side of the mounting table 12 between the printing performing mechanism 20 and the jig 2 so as to rotate in an angle, and the holder 32 is perpendicular to the longitudinal direction. Combined to protrude forward.

The power mechanism 40 has a cam unit 50 and a cam unit 50 installed on one side and a lower side of a mounting table 12 on which a printing support mechanism 20 and a screen support 31 on which the screen 30 is held are installed. It is composed of a power transmission mechanism 80 for transmitting power to the motor 90, which is a rotational power mechanism for providing power to the power transmission mechanism 80.

The cam unit 50 has drive shafts 51 and 52 coupled to the mounting table 12, respectively, and the link mechanism 60 and the cam member 70 are coupled to the drive shafts 51 and 52, respectively.

The link mechanism 60 is connected to the rotary lever 61 which is rotated at the same time as the rotation of the drive shaft 51 and the movable plate 22 of the printing execution mechanism 20 by the rotation of the rotary lever 61. It is composed of a rod 62, the connecting rod 62 is composed of both ends hinged to the rotary lever 61 and the movable plate 22, respectively.

In addition, the rotary lever 61 has a slit 63 formed in the longitudinal direction in the portion coupled with the drive shaft 51, the drive shaft 51 is detachably coupled through the slit 63 (for example Bolts, nuts, etc.) and the radius adjusting portion 64 to adjust the radius of the rotation lever 62 is rotated.

The connecting rod 62 has a turnbuckle-shaped length adjusting portion 65 is formed, the moving plate of the printing performing mechanism 20 by operating the radius adjusting portion 64 and the length adjusting portion 65 It is possible to adjust and set the length at which the 22 reciprocates.

The cam member 70 is eccentrically mounted to one side from the center of the drive shaft 52, and maintains the upper surface of the screen support 31 in contact with the outer surface, the screen support 31 is always a cam member In order to maintain contact with the 70, the screen support 31 and the mounting table 12 includes a tension spring 71 which is an elastic member fixedly supported at both ends.

Here, the cam member 70 has the screen 30 (more precisely the screen support) close to the print base material 1 in response to the printing execution mechanism 20 reciprocating left and right to perform printing and returning. A cam diagram of each section for maintaining / returning the proximity state is formed on the outer surface.

The power transmission mechanism 80 has pulleys 81 mounted on the rotating shaft of the motor 90 and the driving shafts 51 and 52 of the cam unit 50, respectively, and the belts 82 are attached to the pulleys 81, respectively. In combination, the rotational power of the motor 90 is configured to be transmitted to each of the drive shafts 51 and 52.

Here, the belt 82 and the pulley 81 are equally replaceable by a power transmission configuration such as a chain, a sprocket or a rope, a drum, and preferably a rack inside the belt 82 to perform more accurate power transmission. A gear tooth shape of the shape is formed, and the outer surface of the pulley 81 is formed in a shape corresponding thereto.

In addition, each of the drive shafts 51 and 52 of the cam unit 50 may set different specifications (diameters) of the pulleys 82 to accelerate / decelerate the drive shafts 51 and 52. Rotating drive shafts 51 and 52 are equipped with a bearing 83 at a coupling point with the mounting table 12 so as to enable smooth driving.

However, the screen printing machine having the above structure has a very large amount of power used because the motor is used to drive the printing performing mechanism, and a large noise is generated during the printing operation, resulting in poor working environment, and driving the printing base material up and down. Therefore, not only the internal configuration is complicated, but the print base material is shaken, which may deteriorate the print quality.

In addition, the conventional screen printing machine, there is no separate configuration for aligning the position of the print base material, the reliability of printing accuracy is low, and the operator must directly supply and discharge the print base material, so that not only the work speed is lowered but also the skill of the operator There is a problem that quality and productivity may depend on.

The present invention has been proposed to solve the above problems, it is possible to load the print base material more stably one by one, and to stabilize the seating position of the print base material can improve the print quality regardless of the operator's skill, The purpose is to provide an automatic screen printing machine that can reduce the noise generated during operation and the amount of power used.

Automatic screen printing machine according to the present invention for achieving the above object,

A loading unit including an adsorption valve for adsorbing a print base material;

A seating part on which the print base material is seated;

A loading transporting unit for transporting the loading unit such that the printing base material is positioned in the seating unit;

A seating transfer part for transferring the seating part to a printing position;

A screen mounting portion for mounting the screen on an upper side of the seating portion transferred to the printing position;

A printing unit positioned on an upper side of the screen mounting unit to pressurize a paste located on an upper surface of the screen with the printing base material;

It is configured to include.

The apparatus further includes an adsorption sensing unit configured to measure the degree of vacuum inside the adsorption valve to determine whether the printing substrate is adsorbed.

The loading unit,

Vibration means for applying a vibration to the printing base material adsorbed to the suction valve further.

The loading unit further includes a loading block,

The suction valve and the vibration means are provided on the bottom surface of the loading block is configured to contact the upper surface of the printing base material.

And a light emitting part for emitting light toward the print base material and a light receiving part for receiving light passing through the print base material when the print base material is positioned on a path transferred to the seating part. It further includes a number detector for detecting the number of print base material by measuring the amount of light.

A loading plate on which a printing base material is loaded, a base material transferring means for transferring the loading plate upwards so that the printing base material loaded on the uppermost side is located at an adsorption point, and a printing base material at an absorption point located above the loading plate It further comprises a loading portion having a base material detecting means for detecting whether or not.

The loading transfer unit,

A horizontal slide bar arranged in a horizontal direction,

A horizontal slide block sliding along the horizontal slide bar;

It is configured to include a vertical slide block fixed to the loading unit and coupled to the horizontal slide block in a vertically slidable structure.

The seating transfer unit,

A transfer table arranged in a horizontal direction and coupled to the seating part in a slidable structure;

A transfer screw bar arranged to be parallel to the transfer table and coupled to penetrate the seat by a screw coupling structure;

It comprises a transfer motor for rotating the transfer screw bar to transfer the seating portion.

The screen mounting portion,

A mounting bracket on which the side ends of the screen are mounted,

Bracket fixing means for closely fixing the side end of the screen mounted on the mounting bracket to the mounting bracket;

It comprises a bracket conveying means for conveying the mounting bracket in the vertical direction.

The printing unit,

With scraper,

Squeeze,

Horizontal conveying means for horizontally moving the scraper and squeeze;

It comprises a vertical conveying means for vertically moving the scraper and the squeeze independently.

The vertical conveying means is applied to an air cylinder.

Further comprising a position detecting unit for detecting the position of the print base material seated on the seating,

The seating portion is adjusted to the seating table on which the print base material is seated on the upper surface, and coupled to the bottom surface of the seating table to move the seating table in a horizontal direction and rotate about a vertical axis of rotation in accordance with a signal of the position sensing unit. It consists of a table.

The printing base material has a position detecting hole is formed on both left and right ends,

The position detection unit detects the position of the position detection hole to detect the position and direction of the print base material.

In addition, the automatic screen printing machine according to the present invention,

A roller on which a cleaning sheet is wound, a roller conveying means for conveying the controller such that the cleaning sheet is in contact with the bottom surface of the screen, and roller rotating means for rotating the controller when the controller is conveyed; It further comprises a cleaning unit.

The screen printing machine according to the present invention further prints a specific mark on one side of the position detecting hole in addition to the printing shape on the printing base material, and the position detecting part detects the position when the printing base material which has been printed is drawn out from the printing point and passes under the position detecting part. By detecting the position of the hole and the mark to determine whether the printing has been in the normal position, the loading unit is configured to separate and load the normally printed printing base material and the abnormally printed printing base material.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of an automatic screen printing machine according to the present invention.

Figure 4 is a front view of the automatic screen printing machine according to the present invention, Figure 5 is a side cross-sectional view of the automatic screen printing machine according to the present invention, Figure 6 is a partial side cross-sectional view of the automatic screen printing machine according to the present invention.

4 to 6, the automatic screen printing machine according to the present invention includes a loading part 100 having a loading plate 100 on which a printing base material P is loaded, and a printing base material (using a vacuum pressure). A loading unit 200 having an adsorption valve 220 for adsorbing P), an adsorption detection unit for determining whether the printing substrate P is adsorbed by measuring a degree of vacuum inside the adsorption valve 220, and A seating part 300 on which a printing base material P is mounted, a loading transfer part 400 which transfers the loading part 200 so that the printing base material P is positioned on the seating part 300, and the seating part. Seating transfer unit 500 for transferring the 300 to the printing position, Screen mounting portion 600 for mounting the screen (S) on the upper side of the seating portion 300 transferred to the printing position and the screen mounting portion Printing by pressing the paste located on the upper side of the 600 and the upper surface of the screen (S) with the printing base material (P) It is configured to include a material with a printing unit 700 that performs printing on (P), the cleaning unit 900 which clean the bottom surface of the screen (S).

The loading unit 200 adsorbs the printing base material P by sucking the air in contact with the loading block 210 positioned above the loaded printing base material P and the upper surface of the printing base material P. It comprises a suction valve 220, and a vibration means 230 for applying vibration to the printing base material (P) adsorbed on the suction valve 220. Adsorption valve 220 is located on the bottom surface of the loading block 210, is connected to the air pump is configured to suck the air printing base material located on the uppermost side of the printing base material (P) loaded on the loading unit 100 (P) is adsorbed.

At this time, when the print base material (P) has a predetermined load and thickness, such as a printed circuit board, only one print base material (P) located on the upper side is adsorbed, but the print base material (P) is paper or sheets Two or more sheets may be adsorbed. In order to prevent the phenomenon in which two or more print base materials P are adsorbed as described above, the vibration means 230 generates vibration in the print base material P adsorbed by the adsorption valve 220 to the adsorption valve 220. Except for the directly adsorbed print base material (P) only the remaining print base material (P), that is configured to drop off the remaining base materials attached to the bottom of the top printing base material (P).

The vibration means 230 may generate vibration by repeatedly hitting the upper surface of the printing base material P adsorbed on the suction valve 220, so as to directly transmit the vibration in a state in contact with the printing base material P. It may be configured.

When the printing base material P is adsorbed to the adsorption valve 220, since no air is sucked through the adsorption valve 220, a vacuum pressure is formed in the adsorption valve 220. It is configured to detect that the printing substrate (P) is adsorbed on the adsorption unit when the vacuum pressure over the size is measured.

The loading transfer unit 400 is a horizontal slide block 410 is arranged in a horizontal direction, the horizontal slide bar 410 is coupled to the sliding structure and the horizontal slide block slid in the longitudinal direction of the horizontal slide bar 410 420 and a vertical slide block 430 coupled to the horizontal slide block 420 in a structure that is fixedly coupled to one side of the loading unit 200 and slidable in the vertical direction.

Therefore, the loading transfer unit 400 moves the vertical slide block 430 in the vertical direction to raise and lower the loading unit 200, and moves the horizontal slide block 420 in the horizontal direction to move the loading unit 200 left and right. In the direction of movement. In this case, the structure for moving the vertical slide block 430 and the horizontal slide block 420 may be applied to any one of the sliding structures applied to various conventional slide devices, such as using a motor and a gear, or using a roller.

The seating and transporting unit 500 is arranged in a horizontal direction perpendicular to the horizontal slide bar 410 of the loading and transporting unit 400, and a transporting table 510 to which the seating unit 300 is coupled in a slidable structure, and the transporting. The transfer screw bar 520 is arranged side by side with the table 510 and coupled to penetrate the seating portion 300 in a screwing structure, and the transfer screw bar 520 is rotated so that the seating portion 300 is transferred. It is configured to include a transfer motor 530. The transfer screw bar 520 is configured in a rotatable structure in place. Therefore, when the transfer screw bar 520 is rotated by the transfer motor 530, the seating portion 300 is moved forward or backward in accordance with the rotation direction of the transfer screw bar 520.

The screen mounting unit 600, the mounting bracket 610 is mounted on the side end of the screen (S), and the side end of the screen (S) mounted on the mounting bracket 610 tightly fixed to the mounting bracket (610) It comprises a bracket fixing means 620 and the bracket conveying means 630 for conveying the mounting bracket 610 in the vertical direction. The bracket conveying means 630, the height adjustment cylinder is respectively coupled to both ends of the screen (S) so as to independently adjust the left and right height of the mounting bracket 610, all the mounting bracket 610 is fixed vertically coupled The bracket 640 is coupled to the vertical movement bracket 640 in a slidable structure and includes a vertical movement guide bar 650 for guiding the conveying direction of the vertical movement bracket 640. Therefore, the user can adjust the mounting inclination of the screen (S) by adjusting the height adjustment cylinder, respectively, and adjust the overall height of the screen (S) by transferring the vertical movement bracket 640 along the vertical movement guide bar (650). Will be.

The printing unit 700, the scraper 710 for applying the paste provided on the screen (S), and the paste applied to the screen (S) can pass through the screen (S) to be buried in the printing base material (P). Squeeze 720 to press the upper surface of the paste (S) coated with a paste, horizontal transfer means 730 for transferring the scraper 710 and the squeeze 720 in the horizontal direction, and the scraper 710 and squeeze It comprises a vertical conveying means 740 for conveying 720 in the vertical direction.

Since the scraper 710 and the squeeze 720 are configured to be detachably attached to the printing unit 700 in a screwed structure, when the scraper 710 and the squeeze 720 are worn due to prolonged use, the user can easily scrape the scraper. There is an advantage that the 710 and the squeeze 720 can be replaced.

The horizontal conveying means 730 is a means for conveying a block on which the scraper 710 and the squeeze 720 are mounted in a horizontal direction, that is, in a printing direction, and a printing screw bar 732 arranged long in the horizontal direction. It is configured to include a print motor 734 for rotating the print screw bar 732. At this time, the printing screw bar 732 is a structure that is rotatable through the block in which the scraper 710 and the squeeze 720 is mounted in a screw coupling structure to rotate the central axis in the longitudinal direction as the rotation axis in a fixed mounting position. Consists of. Therefore, when the print screw bar 732 is rotated by the operation of the print motor 734, the block on which the scraper 710 and the squeeze 720 is mounted to make a linear movement in the longitudinal direction of the print screw bar 732. do.

The vertical conveying means 740 is composed of two air cylinders to vertically convey the scraper 710 and the squeeze 720, respectively. The air cylinder is configured to push the scraper 710 and the squeeze 720 using the compressed air, wherein the compressed air has a certain size of elasticity, so the distance or squeeze between the scraper 710 and the screen (S) Even if there is a slight error in the distance between the 720 and the screen (S), the scraper 710 and the squeeze 720 can be more closely adhered to the upper surface of the screen (S), thereby improving the print quality Will be. In addition, by operating the scraper 710 and the squeeze 720 using the air cylinder in this way, there is an advantage that can reduce the noise generated during the operation as well as the amount of power used compared to the case of using a motor. .

In addition, the printing unit 700 is coupled to the vertical movement bracket 640 may be configured to adjust the height together with the mounting bracket 610 for mounting the screen (S).

The cleaning unit 900 is for cleaning the bottom surface of the screen S on which the paste residue remains on the bottom surface after the printing operation, and includes a first controller 910 and a first controller on which the cleaning sheet 902 is wound. A cleaning bar 920 for guiding the position of the cleaning sheet 902 so that the cleaning sheet 902 supplied from the 910 may be in close contact with the bottom surface of the screen S, and the cleaning sheet past the cleaning bar 920. At least one reversing roller 930 for changing the traveling direction of 902, a second controller 940 on which the used cleaning sheet 902 is wound, and a cleaning sheet located at the cleaning bar 920. It comprises a roller conveying means 950 for conveying the controller so that the 902 is in contact with the bottom surface of the screen (S), and roller rotating means for rotating the controller when the controller is conveyed.

The roller conveying means 950 is configured to include a cleaning screw bar 952 coupled to the block on which each roller is mounted, and a cleaning motor 954 for rotating the cleaning screw bar 952. At this time, since the operation of the roller conveying means 950 is the same as the horizontal conveying means 730, a detailed description thereof will be omitted.

In addition, the automatic screen printing machine according to the present invention is provided with an output unit (D) for outputting a shape detected by each sensing unit, and an input unit (I) for inputting an operation signal of each unit, and the user output unit (D). It is possible to operate the input unit (I) while watching the print job.

7 to 9 are front views sequentially showing a printing substrate (P) adsorption process of the automatic screen printing machine according to the present invention.

As shown in Figures 7 to 9, the stacking portion 100 applied to the present invention is projected upwardly so as to pass through the stacking plate 100, the stacking position hole H formed in the printing base material (P) (Fig. 13 By inserting into the loading pin 120 for aligning the position of the print base material (P), and the printing plate (P) loaded on the upper side to transfer the loading plate 100 to the upper side to be located at the suction point The base material conveying means 130 and the base plate detecting means 140 which is positioned above the loading plate 100 and detects whether the printing base material (P) is present at the suction point.

The base material detecting unit 140 includes a light emitting sensor 142 and a light receiving sensor 144 which are positioned so that the vertical positions are different from each other. As shown in FIG. 8, the printing base material P is transferred upward by the base material transferring means 130, and the printing base material P positioned at the uppermost side is disposed between the light emitting sensor 142 and the light receiving sensor 144. When positioned, the base material transferring means 130 stops operation, and as shown in FIG. 9, the printing base material P positioned at the uppermost side is adsorbed to the adsorption valve 220 of the loading part 200 and the base material transferring means. 130 descends again.

When the printing base material P is adsorbed to the adsorption valve 220 as described above, the vibration means 230 applies vibration to the printing base material P adsorbed to the adsorption valve 220, so that only one sheet of printing base material P is adsorbed. Adsorbed to the valve 220 to be loaded by the loading unit 200.

FIG. 10 is a front view illustrating a printing substrate (P) sheet number sensing process of the automatic screen printing machine according to the present invention.

As shown in FIG. 10, the loading part 200 emits light toward the printing base material P when the printing base material P is positioned on a path to be transferred to the seating part 300. It is configured to further include a number sensing unit having a light emitting unit 240 and a light receiving unit 250 for receiving the light passing through the printing base material (P). The light emitting unit 240 is coupled to the bottom surface of the loading block 210 and the light receiving unit 250 is located between the loading unit 100 and the seating unit 300, the loading unit 200 is printed substrate (P) After absorbing the light emitting unit 240 and the light receiving unit 250 during the transfer to the seating unit 300 is operated to face each other. The light receiving unit 250 emits light from the light emitting unit 240, passes through the printing base material P, and then measures the amount of light transmitted to the light receiving unit 250 to detect the number of printed base materials P.

At this time, it is obvious that the transmission amount of light set to recognize that the print base material P is one sheet is variously changed by the material or thickness of the print base material P.

11 is a front view showing a printing substrate (P) mounting process of the automatic screen printing machine according to the present invention, Figure 12 is a side view showing the configuration of the seating conveying unit 500 of the automatic screen printing machine according to the present invention, Figure 13 FIG. 14 is a plan view of a printing base material P applied to an automatic screen printing machine according to the present invention, and FIG. 14 is a plan view of a mounting part 300 applied to the automatic screen printing machine according to the present invention.

As illustrated in FIG. 11, the seating unit 300 is coupled to a seating table 310 on which the printing base material P is seated on an upper surface, and a bottom surface of the seating table 310, and the position sensing unit 800. It is configured to include an adjustment table 320 for moving the seating table 310 in the horizontal direction in accordance with the signal of the rotation and rotate about the vertical axis of rotation.

The loading unit 200 which adsorbs the printing base material P is positioned on the upper surface of the seating part 300, and then releases the operation of the suction valve 220 to seat the printing base material P as shown in FIG. 11. The upper surface of the part 300, more specifically, is seated on the upper surface of the mounting table (310).

When the printing base material P is seated on the upper surface of the mounting table 310, the mounting portion 300 is transferred in the longitudinal direction of the transfer table 510. At this time, the seating unit 300 passes through the lower portion of the position detecting unit 800 for detecting the position of the print base material (P) seated on the seating portion 300 before reaching the printing position.

As shown in FIG. 13, the printing base material P has a loading position hole H formed at each corner portion, and a position detecting hole h is formed at both ends thereof. The position detecting unit 800 is configured to detect a mounting position and a mounting angle of the print base material P by sensing a position of the pair of position detecting holes h. At this time, the position detection unit 800 may be configured to detect the position of the position detection hole (h) by detecting a signal reflected by emitting light or magnetic field, the position detection by photographing both sides of the interruption of the printing base material (P) It may also be configured to sense the position of the hole h. Since the position detecting means is a device commercially available in various fields of the related art, a detailed description thereof will be omitted.

For example, as shown in FIG. 14, when the printing base material P is seated on the seating table 310 while being rotated counterclockwise, the position detecting unit 800 detects this and adjusts the adjustment table 320. ), And the adjustment table 320 adjusts the position of the print base material P by rotating the mounting table 310 clockwise. Since the seating table 310 is not only a rotational movement but also a positional movement in the horizontal direction, the seating position of the printing base material P can be properly adjusted even when the position of the printing base material P is biased to one side.

15 and 16 are side views illustrating a printing process of the automatic screen printing machine according to the present invention.

When the seating part 300 is transferred so that the printing base material P is positioned at the printing point, the screen mounting part 600 places the screen S on the upper side of the printing base material P, and pastes the upper surface of the screen S. Is prepared.

Thereafter, as shown in FIG. 15, the scraper 710 is transferred to the lower side and then horizontally transferred so that the paste provided on the upper surface of the screen S is evenly applied to the screen S. When the application of the paste is completed, the scraper ( 710 is conveyed to the upper side and the squeeze 720 is conveyed to the lower side, and then transferred to the horizontal direction as shown in FIG. 16, so that the upper surface of the screen S is compressed so that the paste can be printed on the printing base material P. Let's go.

17 and 18 are side views illustrating the operation of the cleaning unit 900 applied to the automatic screen printing machine according to the present invention.

When the screen S printing is completed, the seating unit 300 is drawn out from the printing point. In this case, the screen mounting part 600 lifts the screen S upwards, and is transported such that the cleaning part 900 is positioned below the screen S as shown in FIG. 17. When the cleaning unit 900 is positioned below the screen S, the screen mounting unit 600 includes a cleaning sheet 902 in which a bottom surface of the screen S is wound around the cleaning bar 920, as shown in FIG. 18. The screen S is transported downward to be in contact with the upper surface of the screen S, and the cleaning unit 900 is moved in the horizontal direction to wipe the paste remaining on the bottom surface of the screen S.

In this case, the cleaning unit 900 rotates the first controller 910 and the second controller 940 during the transfer to clean the bottom of the screen S, thereby always cleaning the screen to a clean area of the cleaning sheet 902. It is configured to wipe the bottom of (S).

19 is a plan view of a printing base material P printed by an automatic screen printing machine according to the present invention, and FIG. 20 is a front view showing a process of transferring the printing base material P printed by an automatic screen printing machine according to the present invention. to be.

The screen printing machine according to the present invention further prints a specific mark M on one side of the position detecting hole h in addition to the printing shape on the print base material P as shown in FIG. 19. When printing is completed, the printing base material P is drawn out from the printing point and passes the lower part of the position detecting unit 800, so that the position detecting unit 800 detects the position of the position detecting hole h and the mark M, thereby providing a normal position. The printing unit 200 determines whether the printing unit P is printed on the conveyor belt B, and the printing unit P, which is abnormally printed, is separated by a waste box (W). Load it.

The present invention has been described in detail using the preferred embodiments, but the scope of the present invention is not limited to the specific embodiments, and should be interpreted by the appended utility model registration claims. In addition, those of ordinary skill in the art should understand that many modifications and variations are possible without departing from the scope of the present invention.

The automatic screen printing machine according to the present invention has a merit that it is possible to more stably load the print base material one by one, to detach and detach the scraper and squeeze more easily, and to reduce the noise and power generated during operation.

In addition, by using the automatic screen printing machine according to the present invention, it is possible to precisely adjust the seating position of the print base material, thereby improving the printing quality regardless of the operator's skill, and the bottom of the screen is cleaned every time the printing is performed, so the printing defect rate It can lower the cost, and automatically detects whether there is a print defect has the advantage of reducing the labor for printing inspection.

Claims (15)

A loading part 200 including an adsorption valve 220 for adsorbing a printing base material P; A seating part 300 on which the printing base material P is seated; A loading transfer part 400 which transfers the loading part 200 such that the printing base material P is located at the seating part 300; A seating transfer part 500 for transferring the seating part 300 to a printing position; A screen mounting part 600 for mounting the screen S on the upper side of the seating part 300 transferred to the printing position; A printing unit 700 positioned on an upper side of the screen mounting unit 600 to pressurize a paste located on an upper surface of the screen S with the printing base material P; Automatic screen printing machine comprising a. The method of claim 1, Automatic screen printing machine further comprises a suction detection unit for determining whether the suction of the printing base material (P) by measuring the degree of vacuum inside the suction valve (220). The method of claim 1, The loading unit 200, Automatic screen printing machine, characterized in that it further comprises a vibration means for applying a vibration to the printing base material (P) adsorbed on the adsorption valve (220). The method of claim 3, The loading unit 200 further includes a loading block 210, The suction valve 220 and the vibrating means 230 is provided on the bottom surface of the loading block 210, automatic screen printing machine, characterized in that configured to be in contact with the upper surface of the printing base material (P). The method of claim 1, When the print base material (P) is positioned on the path to be transferred to the seating portion 300, the light emitting unit 240 for emitting light toward the print base material (P) and the print base material (P) to pass through It is configured to include a light receiving unit 250 for receiving light, the automatic screen characterized in that it further comprises a number detecting unit for detecting the number of print base material (P) by measuring the amount of light passing through the print base material (P) printer. The method of claim 1, A base plate transferring means 130 for transferring the loading plate 100 to the upper side such that the loading plate 100 on which the printing base material P is loaded, and the printing base material P loaded on the uppermost side is positioned at the suction point, The loading unit 100 is located on the upper side of the loading plate 100 further comprises a loading unit 100 having a base material detecting means 140 for detecting whether the printing base material (P) is present at the suction point. Screen printing machine. The method of claim 1, The loading transfer unit 400, A horizontal slide bar 410 arranged in a horizontal direction; A horizontal slide block 420 sliding along the horizontal slide bar 410, An automatic screen printing machine comprising a vertical slide block 430 fixedly coupled to the loading unit 200 and coupled to the horizontal slide block 420 in a vertically slidable structure. The method of claim 1, The seating transfer unit 500, A transfer table 510 arranged in a horizontal direction and coupled to the seating part 300 in a slidable structure; A transfer screw bar 520 arranged side by side with the transfer table 510 and coupled to penetrate the seating portion 300 by a screw coupling structure; An automatic screen printing machine comprising a transfer motor 530 for rotating the transfer screw bar 520 so that the seating part 300 is transferred. The method of claim 1, The screen holder 600, Mounting bracket 610 is mounted side of the screen (S), Bracket fixing means (620) for fixing the side end of the screen (S) mounted on the mounting bracket 610 in close contact with the mounting bracket (610), Automatic screen printing machine characterized in that it comprises a bracket transfer means for transferring the mounting bracket (610) in the vertical direction. The method of claim 1, The printing unit 700, Scraper 710, Squeeze 720, Horizontal transfer means 730 for horizontally moving the scraper 710 and squeeze 720; An automatic screen printing machine comprising a vertical conveying means (740) for vertically moving the scraper (710) and squeeze (720) independently. The method of claim 10, The vertical transfer means (740) is an automatic screen printing machine, characterized in that it comprises an air cylinder. The method of claim 1, Further comprising a position detecting unit 800 for detecting the position of the printing base material (P) seated on the seating unit 300, The seating unit 300 is coupled to a seating table 310 on which the printing base material P is seated on an upper surface, and a bottom surface of the seating table 310 to be seated according to a signal of the position detecting unit 800. And an adjustment table (320) for moving the table (310) in the horizontal direction and rotating about the axis of rotation in the vertical direction. The method of claim 12, The printing base material (P) has a position detecting hole (h) is formed at both left and right ends, The position detecting unit (800) is an automatic screen printing machine, characterized in that configured to detect the position of the position detecting hole (h) to detect the position and direction of the printing base material (P). The method of claim 13, The printing unit 700 further prints a specific mark (M) on one side of the position detection hole (h), The position detecting unit detects the position of the position detecting hole (h) and the mark (M) when the printing base material P, which has been printed, is pulled out from the printing point and passes the lower portion of the position detecting unit (800). To determine whether The loading unit 200 is an automatic screen printing machine, characterized in that configured to separately load the printing substrate (P) and the printing substrate (P) printed abnormally printed. The method of claim 1, A controller on which a cleaning sheet 902 is wound, a roller conveying means 950 for transferring the controller such that the cleaning sheet 902 contacts the bottom surface of the screen S, and the controller When the automatic screen printing machine further comprises a cleaning unit 900 having a roller rotating means for rotating the controller.

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