KR100270242B1 - Screen printing apparatus and method of drying coating films - Google Patents

Abstract

A screen printing application apparatus is disclosed in which a printing paste is applied to a printed object placed on a table by using a screen and a squeegee to form a coating film. Screen retirement means for retiring in a predetermined retirement direction, coating film drying means for drying a coating film formed on a printed matter placed on a table, and after said screen is retired by said screen retirement means, said coating film drying means A coating film drying method including a moving means for relatively moving the table or the coating film drying means so as to face each other above the to-be-printed object and to be positioned relatively, has been disclosed.

Description

Screen Printing Apparatus and Drying Method of Coating Film

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen-type printing coating device and a method for drying a coating film, which have a function of drying a coating film formed on a printed object, by applying a printing paste to the printed object.

Background Art Conventionally, screen printing application devices are known as devices for printing on a printed matter such as paper or a substrate to form a predetermined coating film. As the screen printing coating device of this type, an apparatus having the configuration of FIG. 17 and an apparatus having the configuration of FIG. 18 are known.

In the screen-type printing application device of the first configuration shown in FIG. 17, the table 122 is fixed on the main body 121 of the apparatus, and the to-be-printed object (or substrate) P1 such as paper or a substrate is removable. Are placed on the table 122. With the to-be-printed object P1 placed on the table 122, the squeegee 124 is slid from the print start side to the print end side on the screen 123 on which the printing paste has been placed, whereby the blood on the table P1 is placed. Paste is applied to the printed matter through the screen 123 to form a predetermined coating film.

In addition, after the printing application is finished, the scraper 125 is slid from the printing application end side of the screen 123 to the printing application start side, and the printing paste remaining on the screen 123 is scraped and collected again to the printing application start side, and the application is performed. The film-formed printed matter P1 is taken out from the table 122. By repeating the above-mentioned process, a coating film is formed in order in each of several to-be-printed object P1.

On the other hand, in the printing application device of the 2nd structure shown in FIG. 18, the table 122 is provided in the main body 121 of the apparatus so that retraction is possible. As shown in FIG. 19, the to-be-printed object P1 is placed on the table which is retracted out of the main body 121, and is made to enter the main body 121. FIG.

In this state, as shown in FIG. 20, the squeegee 124 is slid from the printing application start side of the screen 123 on which the printing paste is placed to the printing application end side, so that the printing paste is printed on the table 122 (P1). ) Is applied through the screen 123 to form a predetermined coating film. After printing application, as shown in FIG. 21, the scraper 125 is slid from the printing application end side of the screen 123 to the printing application start side, and the printing paste remaining on the screen 123 is scratched to apply the printing. Gather back to the starting side.

Thereafter, as shown in FIG. 22, the table 122 is retracted from the main body together with the to-be-printed object P1, and then the to-be-printed object P1 is lifted from the table 122 outside the main body 121. By repeating the above-described steps, the coating film can be sequentially formed on the plurality of printed matters P1, respectively.

In the conventional printing application step of employing a plurality of such screen-type printing application devices so as to sequentially form various coating films on a printed object, as shown in FIG. 23, each printing application device 126A (126B) 126B. The coating film drying apparatus 127A (127B) is installed in the downstream of (). After the coating film is formed on the printed matter P1 in the printing application devices 126A and 126B, the coating film formed on the printed matter P1 is dried by the coating film drying devices 127A and 127B, respectively.

However, the above-described prior art has the following problems because the printing application step and the coating film drying step are independently performed by the printing application devices 126A and 126B and the coating film drying devices 127A and 127B.

(1) Since spaces for installing the coating film drying apparatuses 127A and 127B should be secured on the downstream side of the printing application apparatuses 126A and 126B, respectively, a large space is required for the printing application process as a whole.

(2) The work efficiency is remarkable because the printed matter P1 has to be taken out from the table 122 of the printing application devices 126A and 126B after completion of the printing application and transferred to the coating film drying devices 127A and 127B, respectively. Is lowered.

(3) It takes a long time to dry the coating film after printing coating, and the coating film formed on the printed matter P1 may be oriented to one side, resulting in a change in film thickness or shape.

(4) If another work step is inserted between the print application step and the coating film drying step, it takes time to determine whether or not a predetermined coating film is formed, thereby lowering the productivity.

The present invention has been made to solve the above-mentioned problems (1) to (4), and an object of the present invention is a screen type that can dry a coating film immediately after forming a coating film on the printed object without moving the printed matter. It is providing the printing coating device and the drying method of a coating film.

In order to achieve the above object of the present invention, the first invention relates to a screen-type printing coating device for forming a coating film by applying a printing paste to a printed object placed on a table using a screen and a squeegee, the screen after completion of printing application Screen retirement means for retiring in a predetermined retirement direction from directly above the printed matter placed on the table; Coating film drying means for drying the coating film formed on the printed matter placed on the table; A moving means for relatively moving said table or said coating film drying means such that said screen film drying means is located relatively relative to each other above the to-be-printed object after a screen is moved out or lifted out by said screen retiring means. do.

In this specification, the expression "upright rectus" means the relationship between the screen and the printed matter after the completion of the printing application, and of course, the screen is in contact with the printed matter and the screen is not in contact with the printed matter. Includes a state very close to. On the other hand, the expression "relatively" in the present specification means the relationship between the coating film drying means and the printed matter placed on the table. Therefore, the expression " move relatively " refers to a change in the positional relationship between the coating film drying means and the table, which also means that the coating film drying means is fixed with respect to the table to which the coating film drying means is dried. And moving the table to the fixed coating film drying means or to both the coating film drying means and the table to an optimal or proper position.

The second invention relates to a screen printing application device according to the first invention, comprising: screen retirement control means for controlling the screen retirement means for retiring the screen in the retirement direction immediately after completion of printing application; And moving control means for controlling the moving means for advancing the coating film drying means toward the printed matter after the screen is removed and relatively positioned above each other.

The third invention relates to a screen printing application device according to the first invention, wherein the screen is removed from the table upwards.

The fourth invention relates to the screen-type printing coating device according to the first, second or third invention, wherein the coating film drying means includes a short wavelength ultraviolet irradiation device.

The fifth invention relates to a method of drying a coating film on a printed matter placed on a screen-type printing coating device having a screen and a squeegee by using a coating film drying means. After applying to form a coating film, removing the screen located above the to-be-printed object; Moving the coating film drying means to the printed matter so that the coating film drying means is positioned to face each other relatively upward with respect to the printed matter; Drying the coating film formed on the to-be-printed object using a coating film drying means.

Therefore, after the screen-type printing application device according to the first invention is formed by printing and coating a coating film on a printed object, the screen is moved out of the table-like printed matter in a predetermined retirement direction by the screen retirement means. have. Thereafter, the table or the coating film drying mechanism is moved so that the coating film drying means is positioned relative to each other on the printed matter. In this state, the coating film on the printed matter placed on the table is dried using the coating film drying means.

Therefore, immediately after the coating is applied on the printed matter placed on the table to form a coating film, the coated film can be immediately dried in the state where the printed matter is placed on the table without having to lift the printed matter from the table. Therefore, it is not necessary to install the coating film drying apparatus further downstream of the printing application apparatus, so that the installation space of the entire printing application process can be reduced. Moreover, since it is not necessary to remove a to-be-printed object from the table of a printing application device after conveying a printing application, and to transfer it to the coating film drying apparatus provided separately, working efficiency can be improved.

In addition, since the coating film can be dried immediately after formation, it is possible to prevent the coating film formed on the to-be-printed object from being pushed to one side and the like resulting in different film thicknesses or shapes. In addition, since there is no additional step sandwiched between the printing coating step and the coating film drying step, the determination as to whether or not a predetermined coating film is formed can be performed continuously in the coating film formation and drying, thereby increasing the yield. .

In the screen printing application device of the second aspect of the invention, the screen retirement means is driven under the control of the screen retirement control means to retire in the screen retirement direction immediately after the coating film is formed. In addition, after the screen is removed, the movement control means is moved relatively under the control of the drive control means, so that the coating film drying means is relatively positioned so as to face each other above the to-be-printed object. Therefore, the screen can be safely moved out in a predetermined eviction direction, and the coating film drying means can also be relatively positioned so as to be in a position facing each other above the substrate.

In the screen printing application device of the third invention, the screen can be moved out from the table. Therefore, it is not necessary to secure a space for screen movement in the lateral direction of the main body, which has been required in the configuration in which the screen is moved out sideways, so that the installation space of the screen printing application device can be reduced.

In the screen printing application device of the fourth invention, the coating film drying means is constituted by a short wavelength ultraviolet irradiation device. Thus, the coating film formed on the substrate can be dried and cured at a low temperature, so that the substrate and the apparatus in the coating film or the printing application apparatus are not affected by the high temperature.

In the drying method of the coating film formed on the to-be-printed object of 5th invention, after printing a coating film is formed by using a screen and a squeegee to form a coating film, the screen located on the to-be-printed object is removed from the to-be-printed object. Thereafter, the coating film drying means is moved to the to-be-printed object so as to be positioned relatively upward to face each other, and the coating film formed on the to-be-printed material is dried by this coat film drying means. Therefore, the coating film can be dried immediately after the coating film is formed on the to-be-printed object without moving the to-be-printed object.

Features of the invention that are believed to be novel are set forth explicitly in the appended claims. The present invention itself and the objects and effects of the present invention are believed to be best understood with reference to the preferred embodiments of the present invention described below and the accompanying drawings, which are as follows.

1 is a side view of a coating film drying mechanism of a screen printing application device according to a first embodiment of the present invention.

2 is a plan view showing a schematic configuration of a printing application mechanism of the screen printing application device above.

3 is a front view showing a schematic configuration of the above printing application mechanism.

4 is a front view showing the main portion of the screen-type printing application device.

Fig. 5 is a front view showing the main portion of the same screen printing application device.

6 is a plan view of main parts of the coating film drying mechanism;

Fig. 7 is a partially enlarged horizontal sectional view of the main part of the coating film drying mechanism.

8 is a side sectional view of a main part of a coating film drying mechanism.

9 is a block diagram showing a control circuit of the screen printing application mechanism.

Fig. 10 is a side view showing a screen printing application device according to the second embodiment of the present invention.

FIG. 11 is a side view showing the operation of the screen printing application device of FIG. 10; FIG.

12 is a side view showing a screen printing application device according to a third embodiment of the present invention.

FIG. 13 is a schematic side view showing a continuous operation in the screen printing application device of FIG. 12; FIG.

FIG. 14 is a schematic side view showing a continuous operation in the screen printing application device of FIG. 13; FIG.

FIG. 15 is a schematic side view showing a continuous operation in the screen printing application device of FIG. 14; FIG.

FIG. 16 is a schematic side view showing a continuous operation in the screen printing application device of FIG. 15; FIG.

Fig. 17 is a schematic side view showing a first configuration of a conventional screen printing application device.

18 is a schematic side view showing a second configuration of a conventional screen printing application device.

FIG. 19 is a schematic side view showing an operation of the conventional screen printing application device shown in FIG. 18; FIG.

20 is a schematic side view showing a continuous operation in the conventional screen printing application device shown in FIG.

FIG. 21 is a schematic side view showing a continuous operation in the conventional screen printing application device shown in FIG. 20; FIG.

FIG. 22 is a schematic side view showing a continuous operation in the conventional screen printing application device shown in FIG. 21; FIG.

Fig. 23 is an explanatory diagram showing a printing application step employing a conventional screen printing application device.

First embodiment

A screen printing application apparatus according to a first embodiment of the present invention for applying a printing paste to a substrate P1 as a printed matter will be described below with reference to FIGS.

As shown in FIG. 1, the screen printing application device 30 of this embodiment applies an XY-θ table device 32 for supporting the substrate P1 and a printing paste onto the substrate P1 to form a coating film. The printing application | coating mechanism 52 for forming and the coating film drying mechanism 91 for drying the coating film formed on the board | substrate P1 are provided.

As shown in Figs. 2 to 5, the table device 32 is fixed to the upper surface of the main body 31 of the device 30. The table 33 of the table apparatus 32 is pivotally supported by the bearing body 34 on the main body 31, and can be rotated by a drive motor (not shown). In addition, the bearing body 34 is integrally coupled to the main body 31 and can be moved in the X and Y axis directions, and can be moved in a predetermined direction by a drive motor (not shown). The substrate P1 can be supplied to the table 33 and placed at a predetermined position on the table 33.

Next, the print application | coating mechanism 52 is demonstrated in detail below.

As shown in FIGS. 2-5, the strut 53 is erected corresponding to the table apparatus 32 in the four corners of the upper surface of the main body 31. As shown in FIG. Two pairs of rail support frames 54 are installed between each pair of struts 53 in the Y direction, and the transport rails 55 are fixed on the rail support frames 54, respectively. The strut 53 is operatively connected to a screen 62 evacuation motor 57 (hereinafter referred to as an "eviction motor") as a driving source via a lifting mechanism (not shown) provided in the main body 31 ( As shown in Fig. 9, the moving motor 57 can be moved up and down by forward and reverse rotation. At the same time, a rotary encoder is provided in the retirement motor 57 so that the rotational drive amount of the retirement motor 57 can be detected.

A ball screw 56 is installed in each rail support frame 54 and extends in the transport direction to be operatively connected to a transport drive motor (not shown). The ball screw 56 is screwed to a nut 58 to which the transport frame 59 is fixed. The upper portion of the transport frame 59 is provided on the transport rail 55 to be able to slide along the transport direction. This nut 58 is moved horizontally along the conveyance rail 55, and moves the conveyance frame 59 in the Y direction according to the printing application | coating state according to the drive of the conveyance drive motor.

The rectangular print frame 60 is fixed to the rail support frame 54 such that the rectangular print frame 60 is positioned on the table device 32. (For convenience of description, the rail support frame (see FIGS. 4 and 5) 54) and the drawing of the structure connecting the printing frame 60 is omitted).

The rectangular screen frame 61 larger than the table 33 is supported on the lower surface of the printing frame 60, and the screen 62 which is predetermined masking is extended on the lower end of the screen frame 61. As shown in FIG. The screen 62 is a woven fabric in which an oil coating film is formed on both surfaces. The screen reciprocates with respect to the table as the print frame 60 moves up and down. Near the strut 53, an upper limit limit switch 113 (see Fig. 9) that operates in response to the operation position of the strut 53 when the print frame 60 is positioned at the upper limit position is provided. This upper limit switch 113 outputs an "on" signal when the print application mechanism 52 is positioned at the upper limit position.

As shown in Fig. 5, a bracket 63 constituting the print head frame is hypothesized on and between two transport frames 59. The squeegee 65 which apply | coats a printing paste is supported by the bracket 63 via the squeegee support mechanism 64. As shown in FIG. The bracket 63 also supports a scraper (not shown) via a scraper support mechanism (not shown).

The printing paste is applied to the substrate P1 provided on the table 33 by using the screen 62 and the squeegee 65 to form a coating film. The eviction motor 57, the lifting mechanism (not shown), the strut 53, the transportation frame 59, and the like constitute a screen eviction means. In this way, the screen 62 is able to retreat upwards from immediately above the substrate P1 after forming a coating film on the substrate P1.

Next, the coating film drying mechanism 91 is explained in full detail.

As shown in FIGS. 4 to 8, a pair of ball screws 92 and 93 are mounted on the main body 31 on both sides of the table apparatus 32 over almost the entire length of the main body 31. Each of them is rotatably supported by 95. Bevel gears 92a and 93a are respectively fixed to the end portions of the ball screws 92 and 93 in the Y direction.

The rotary shaft 96 is rotatably supported on the main body 31 via the bearing 90 and extends in the X axis direction over the distal ends of the ball screws 92 and 93. Bevel gears 96a are fixed to respective ends of the rotary shaft 96 so as to be engaged with bevel gears 92a and 93a of the ball screws 92 and 93, respectively. A table 33 moving motor 97 (hereinafter referred to as a "moving motor"), which is a step motor that can rotate in the forward and reverse directions, is provided in the main body 31, and a pulley is fixed to the output shaft. . A timing belt is wound around the pulley, and another pulley 98 is fixed in the middle of the rotation shaft 96.

Therefore, when the rotating shaft 96 is driven and rotated by the rotation of the moving motor 97 via the timing belt 99, the driving torque of the motor 97 is passed through the bevel gears 96a, 92a and 93a. Are delivered to screws 92 and 93. At the same time, the moving motor 97 has a rotary encoder to detect the amount of rotational drive.

As shown in FIGS. 1 to 4, on the main body 31, a pair of guide rails 100 are provided below the ball screws 92 and 93 and extend in the Y direction, respectively. The coating film drying mechanism 91 which comprises a coating film drying means is provided in this guide rail 100 so that sliding is possible. The coating film drying mechanism 91 has a slider 101, which is installed on the guide rail 100 so as to be slidable so as to be provided on the upper portions of the ball screws 92 and 93. Each is touching. Thus, this slider 101 can move in the forward and backward directions with respect to the Y direction when the ball screws 92, 93 rotate forward and backward.

The moving motor 97, the rotating shaft 96, the ball screw 92, 93, etc. constitute a moving means, and the coating film drying mechanism 91 is moved by this moving means, and it is installed on the table 33. As shown in FIG. After the printing application | coating mechanism 52 withdraw | derives from the upper direction of the board | substrate P1 upward, it is designed so that it may be located facing the board | substrate P1 on the board | substrate P1.

6-8, the side plate 102 stands on the slider 101, and the horizontal member 103 is provided between these side plates 102. As shown in FIG. In addition, in the present embodiment, the short wavelength ultraviolet irradiation device constitutes the above coating film drying mechanism 91, and the plurality of ultraviolet irradiation tubes 106 are bracketed 104 in the X direction near the side surface of the horizontal member 103 in the Y direction. And the support plate 105 is fixed.

A lid 107 is attached to the horizontal member 103 to cover the bracket 104, the support plate 105, and the ultraviolet irradiation tube 106. The cover 107 has a window 108 extending in the X direction at the bottom thereof, so that short-wavelength ultraviolet light is transmitted from the ultraviolet irradiation tube 106 to the substrate P1 through the window 108 of the cover 107. The formed coating film is irradiated to induce a chemical change of the coating film at room temperature under the action of ultraviolet rays, and the coating film can be dried and cured.

Next, with reference to FIG. 9, the control circuit of the screen-type printing coating device which concerns on a present Example is demonstrated.

A central processing unit (hereinafter referred to as "CPU") 111 functioning as a control unit is provided, and a ROM (ROM) 111a for storing various control programs and a record for storing various input / output data and operation results. And a RAM 111b as readable memory means. This CPU 111 constitutes screen retirement control means, movement control means and other control means.

The driving table 112 is provided with input keys, such as a numeric key, and is connected to CPU111. When data such as the operation time of the coating film drying mechanism 91 corresponding to the coating film formed on the substrate P1 is input by operating a numeric key or the like on the driving table 112, the CPU 111 of the RAM 111b is used. It is stored in a predetermined memory area.

The operation table 112 also has an input key for manually operating each mechanism provided in the screen printing application device 30, and the CPU 111 operates the input key to view the display based on the input signal. These mechanisms in the screen-type printing application device 30 can be controlled.

The upper limit limit switch 113 is electrically connected to the CPU 111, and when the print application mechanism 52 rises to the upper limit position, the " ON " signal is inputted to the CPU 111, and the substrate P1 on the table 33 is placed. The screen 62 is to be removed from the upper right side of the upper side).

Drive motors for driving the table device 32 to drive the XY-θ axis are electrically connected to the CPU 111, and the table device 32 is driven on the XY-θ axis according to the drive control signal from the CPU 111. Each drive. A rotary encoder (not shown) provided in each drive motor inputs a detection signal to the CPU 111, and the CPU 111 calculates the amount of rotational drive of each motor in accordance with this detection signal.

The retirement motor 57 as the driving source for lifting and lowering the strut 53 is electrically connected to the CPU 111 to raise and lower the strut 53 in accordance with the lift driving control signal from the CPU 111. A rotary encoder (not shown) of the retirement motor 57 inputs a detection signal to the CPU 111, and the CPU 111 calculates the driving amount of the motor 57 in accordance with this detection signal.

The print application mechanism 52 is electrically connected to the CPU 111 to control the print application operation in accordance with various print application signals of the CPU 111.

The moving motor 97 for moving the coating film drying mechanism 91 is electrically connected to the CPU 111 and rotates forward and backward in accordance with a control signal from the CPU 111. In addition, a rotary encoder (not shown) of the moving motor 97 inputs a detection signal to the CPU 111. Then, the CPU 111 calculates the driving amount of the motor 97 in accordance with this detection signal.

Next, the operation of the screen printing application device having the above-described configuration will be described.

In this printing application device, the printing frame 60 is placed near the table 33 of the table apparatus 32 instead of putting the coating film drying mechanism 91 at the 0 position outside the printing frame 60 before the start of printing application. Then, the coating film drying mechanism 91 is prevented from interfering with the adjacent print frame 60.

In this state, when a start signal is input to the CPU 111 by operating a key on the operation table 112, the retirement motor 57 is driven under the control of the CPU 111, and the print application mechanism 57 Ascending, the screen 62 is withdrawn from the table 33 upwards. With the screen 62 at a distance from the table 33, the substrate P1 as a printed matter is taken on the table 33 and placed in place.

Thereafter, the print application mechanism 52 is driven and lowered by the eviction motor 57 to move the screen 62 directly above the table 33. In this state, the printing paste is applied to the substrate P1 on the table 33 by using the screen 62 and the squeegee 65 of the printing application mechanism 52 to form a predetermined coating film.

After the coating film is formed on the substrate P1, the eviction motor 57 is driven under the control of the CPU 111 to raise the print application mechanism 52 so that the screen 62 is directly above the substrate P1. Evict upwards.

In this state, the moving motor 97 is driven under the control of the CPU 111 to move the coating film drying mechanism 91 toward the substrate P1 on the table 33 so as to come into positions facing each other. Short-wavelength ultraviolet light is transmitted from the ultraviolet irradiation tube 106 through the window 108 of the cover 107 through the window 108 of the cover 107 while the coating film drying mechanism 91 is reciprocated in the Y direction using the moving motor 97. Investigate. In this way, the coating film formed in the board | substrate P1 on the table 33 produces a chemical change at normal temperature by ultraviolet-ray, and will dry and harden | cure.

After the coating film is dried and cured, the substrate P1 on the table 33 is picked up by a carrying device (not shown) and taken out from the table 33.

The screen printing application device of this embodiment has the following effects.

(a) In the screen-type printing application device of the present embodiment, after the coating film is formed by printing and coating on the substrate P1 as a printed matter, the screen 62 is tableed by the motor 57 for retiring as the screen retiring means. (33) It is made to evaporate in the predetermined | prescribed retirement direction from the upper direction upward of upper board | substrate P1. After the screen 62 is removed, the coating film drying mechanism 91 is positioned at a position facing each other on the substrate P1 using the moving motor 97 as the moving means, so that the coating film drying mechanism as the coating film drying means. Using 91, the coating film on the board | substrate P1 on the table 33 is dried.

Therefore, after forming a coating film on the board | substrate P1, a coating film can be dried immediately in the state in which the board | substrate P1 was put on the table 33, without having to take out the board | substrate P1 from the table 33. FIG. Therefore, it is not necessary to install the coating film drying apparatus further downstream of the printing application apparatus, so that the installation space of the entire printing application process can be reduced. Moreover, since it is not necessary to remove the board | substrate P1 from the table 33 of a printing application apparatus after the printing application | coating, and to transfer to the coating film drying apparatus provided separately, work efficiency can be improved.

In addition, since the coating film can be dried immediately after formation, it is possible to prevent the coating film formed on the substrate P1 from sticking to one side and the like so that the film thickness or the shape is different. In addition, since there is no additional step sandwiched between the printing coating step and the coating film drying step, the determination as to whether or not a predetermined coating film is formed can be performed continuously in the coating film formation and drying, thereby increasing the yield. .

(b) In the screen-type printing application device of the present embodiment, the evaporation motor 57 as the screen retirement means is driven under the control of the CPU 111 as the screen retirement control means to retire the screen 62 immediately after the coating film is formed. Evict in the direction. In addition, after the screen 62 is removed, the moving motor 97 as the moving means is driven under the control of the CPU 111 as the driving control means, and the coating film drying mechanism 91 as the coating film drying means is moved to the substrate P1. ) Proceed upwards to face each other. Therefore, the screen 62 can be safely moved out in the predetermined retirement direction, and the coating film drying mechanism 91 can be advanced to be in a position facing each other above the substrate P1.

(c) In the screen printing application device of the present embodiment, the screen 62 can be moved out of the table 33 upward. Therefore, it is not necessary to secure a space for moving the screen 62 in the transverse direction of the main body 31, which has been required in the configuration in which the screen 62 is laterally evicted, thereby reducing the installation space of the screen printing application device. Can be.

(d) In the screen printing coating device of the present embodiment, the coating film drying mechanism 91 as the coating film drying means is constituted by a short wavelength ultraviolet irradiation device including a plurality of ultraviolet irradiation tubes 106. Therefore, the coating film formed on the substrate P1 can be dried and cured at a low temperature, so that the substrate P1 and the coating film are not affected by the high temperature.

(e) In this embodiment, the coating film drying mechanism 91 as the coating film drying means is on the main body 31 when printing coating is performed (at the retirement position). Therefore, unlike the apparatus of the prior art, it does not require a space for the drying apparatus, it is possible to save the entire installation space of the apparatus.

Second embodiment

Next, a part different from the first embodiment will mainly be described in the second embodiment of the present invention.

In the screen printing application device according to the second embodiment of the present invention, as shown in FIGS. 10 and 11, a support table 116 is provided beside the main body 31, and a drive belt 117 is provided. ) Extends over the support table 116. The coating film drying mechanism 91 as the coating film drying means is attached to the drive belt 117 by the mounting plate 118. As for the coating film drying mechanism 91, the drive belt 117 is a moving motor as the driving means. When it is rotated by 97, it is advanced toward the main body 31 so as to be in a position facing each other above the substrate P1 on the table 33.

Therefore, as shown in FIG. 10, in the second embodiment as well as the first embodiment described above, after completion of forming the coating film on the substrate P1, the screen 62 is placed on the substrate P1 on the table 33. Evict upwards from directly above. In this state, as shown in FIG. 11, the drive belt 117 is rotated by the moving motor 97, and the coating film drying mechanism 91 is advanced above the board | substrate P1 so that it may be relatively located facing each other. .

In this way, the coating film formed on the board | substrate P1 provided on the table 33 is dried and hardened by this coating film drying mechanism 91. FIG. Therefore, also in the second embodiment, the coating film formed on the substrate P1 provided on the table 33 can be dried and cured immediately after formation without lifting the substrate P1 out of the table 33.

Third embodiment

Next, with reference to FIGS. 12-16, the 3rd Embodiment of this invention is mainly demonstrated about a part different from a 1st Embodiment.

In the third embodiment, the present invention has been implemented in the screen printing application device of the conventional second configuration shown in FIG. As shown in FIG. 12, the support table 20 is placed side by side in the Y direction at the side end of the main body 31, and the ball screw 22 is rotatably supported on the upper surface of the main body 31 and the support table 20. And placed in the Y direction (only the portion of the ball screw 22 supported by the support table 20 is shown in the drawing). A rail (not shown) is placed on the upper surface of the body 31 and the support table 20 parallel to the ball screw 22, so that the table 21 is in the atmosphere on the support table 20 between two positions, that is, shown in FIG. It is possible to slide on the rail between the position and the print application auxiliary position on the main body 31 shown in FIG.

Each ball screw 22 is operatively connected to a table moving motor 26 which is capable of forward and reverse rotation to the main body 31. The table 21 is fixed to the ball screw 22 with the nut 21a. In this way, the ball screw 22 is rotated by the forward and reverse rotation of the table moving motor 26, and the table 21 is moved by the rotation of the ball screw 22 in the Y direction or the opposite direction shown in the drawing. .

The CPU 111 of the first embodiment is capable of controlling the moving motor 97, but the CPU 111 of the third embodiment is capable of controlling the table moving motor 26. The CPU 111 of FIG.

The CPU 111 constitutes screen retirement control means, motion control means and other control means.

In the present embodiment, the coating film drying apparatus 27 as the coating film drying means is located above the support table 20 close to the main body 31. The coating film drying apparatus 27 is fixed to the support table 20 or the main body 31 by a bracket (not shown). The coating film drying apparatus 27 is constituted by a short wavelength ultraviolet irradiation device, and the short wavelength ultraviolet irradiation device includes a reflection case 28 and a plurality of ultraviolet irradiation tubes which are placed in the X direction in the case 28. 106) (for convenience of description, only one ultraviolet irradiation tube 106 is shown in the drawing). The coating film drying apparatus 106 is electrically connected to the CPU 111 so that these tubes 106 are turned on under the control of the CPU 111.

In addition, since the printing application | coating mechanism 52 etc. are the same as that of the structure of 1st Example, only the scraper 25, the screen frame 61, and the squeegee 65 are shown in figure schematically.

Now, the operation of the screen printing application device having the above-described configuration will be described.

With the table 21 in the standby position shown in FIG. 12, the printed matter p1 is placed on the table 21. In this state, the keys on the operation table 112 are operated to start the control of the CPU 111 to drive the retirement motor 57 to raise the print application mechanism 52 and to lift the screen 62 from the main body 31. Evoke upwards). In the state where the screen 62 has been moved to the upward position, as shown in FIG. 13, the CPU 111 rotates the table moving motor 26 to move the table 21 together with the to-be-printed object P1. ) To the printing application auxiliary position. Moreover, when the table 21 is moved, the ultraviolet irradiation tube 106 of the coating film drying apparatus 27 turns off under the control of the CPU 111. Thereby, as shown in FIG. 14, the eviction motor 57 is driven and the print application | coating mechanism 52 is lowered, and the screen 62 is moved directly above the table 21. As shown in FIG. In this state, the printing paste is applied to the substrate P1 on the table 33 using the screen 62 and the squeegee 65 of the printing application mechanism 52 to form a predetermined coating film.

After the coating film is formed on the substrate P1, under the control of the CPU 111, the eviction motor 57 is driven to raise the print application mechanism 52 and the screen 62 is moved upward from immediately above the substrate P1. Evict.

After completion of printing application, as shown in Fig. 15, the scraper 25 is slid from the printing application end side to the printing application start side (Y direction), and the print paste remaining on the screen 62 is scraped off to the printing start side. Send it back.

Next, the CPU 111 rotates the table moving motor 26 in the reverse direction to move the table 21 together with the printed matter P1 from the print application auxiliary position on the main body 31 to the standby position on the support table 20. Send to. When the table 21 is evicted from the main body 31 to the support table 20, the ultraviolet irradiation tube 106 of the coating film drying apparatus 27 is turned on under the control of the CPU 111, and the CPU 111 moves the table. The motor 26 can be controlled so that the coating film is completely dried and cured by the ultraviolet rays at a slower speed than when the table 21 advances from the support table 20 to the main body 31.

Then, as shown in FIG. 16, the table 21 is removed from the main body 31 together with the substrate P1, and the substrate P1 is lifted from the table 21 on the support table 20. By repeating this procedure, a coating film is formed on each of several to-be-printed objects P1 sequentially.

In this embodiment, the substrate P1 on the table 21 is moved slowly by controlling the table moving motor 26 to cause the table 21 to move slower than the speed of advancing from the support table 20 to the main body 21. ) Is irradiated with ultraviolet rays from the ultraviolet irradiation tube 106. In this way, the coating film formed on the substrate P1 can be completely dried and cured.

Although only three embodiments of the present invention have been described herein, it is obvious that a person skilled in the art can carry out the invention in many other specific forms without departing from the spirit or scope of the invention. . For example, the present invention may be practiced as follows.

(1) In the above embodiment, while the table device 32 is fixed to the main body 31, the table 33 can be removed from the main body 31, so that the printed matter P1 is the main body 31. The table 33 may be placed on the table 33 retired outward so that such a table 33 is advanced and placed toward the main body 31 together with the printed matter P1.

(2) In the above embodiment, the coating film drying mechanism 91 is moved in the Y direction by the moving motor 97, and this motor 97 can be replaced with an air syringe or a hydraulic syringe.

(3) In all the above embodiments, the printing frame 60 is designed to be elevated by the retirement motor 57, which can be replaced by an air syringe or a hydraulic cylinder.

(4) In all the previous embodiments, the screen 62 is designed to retreat upwards from the table 33, which may cause the screen 62 to retreat transverse to the table 33.

(5) In all the above embodiments, the coating film drying means is constituted by a short wavelength ultraviolet irradiation device, and this short wavelength ultraviolet irradiation device can be replaced by an infrared dryer or a hot air dryer.

Next, the technical idea which can be grasped | ascertained from the said Example other than invention described in the claim is demonstrated with the effect.

(A) In the screen printing application device of the present invention, the coating film drying means is positioned on the main body on which the table is placed in the state where the printing application is performed. According to such a structure, since the coating film drying means is on the main body, the drying apparatus installation space which was required in the conventional apparatus is not necessary, and the installation space of the apparatus can be saved.

The effects of the present invention will be described below.

According to the first and fifth inventions, the coating film formed by printing application on the printed matter on the table can be immediately dried after the printing application without lifting the printed matter from the table.

According to the second invention, the screen can be safely moved in a predetermined eviction direction, and the coating film drying means can be relatively positioned to face each other on the printed matter.

According to the third aspect of the invention, since the screen is moved upward, there is no need to secure the screen moving space in the main body transverse direction required in the configuration in which the screen is moved out in the lateral direction, and the installation space of the apparatus can be reduced. .

According to the fourth invention, since the coating film formed on the printed matter can be dried and cured at a low temperature, the printed matter and the coated film are not affected by the high temperature, so that the quality and yield of the printed matter can be improved.

Therefore, the examples and embodiments presented are to be considered as illustrative and not restrictive, and should not be construed as limited to the details set forth herein, but may be modified within the scope of the appended claims.

Claims (7)

The main body on which the table on which the to-be-printed object is placed is located at the upper part thereof, A screen positioned on the table and having a predetermined mask; Screen retirement means for placing the screen directly above the to-be-printed object placed on the table before printing application, and retreating the screen from above the direct-to-be-printed object placed on the table to a predetermined interval above the completion of printing application; Coating film drying means for drying the coating film formed on the to-be-printed object placed on the table while linearly reciprocating so as to cover the upper table area in the space between the screen evacuation means and the table when the screen is moved out of the screen evacuation means; And said moving means for moving said coating film drying means in a horizontal direction while facing each other above the to-be-printed object. The screen printing coating device according to claim 1, wherein the coating film drying means is a short wavelength ultraviolet irradiation device. Evacuating the screen located on the table top of the main body upwards from the table top by a predetermined interval, Mounting a to-be-printed object on the table; Lowering the screen again to be positioned directly above the table; Applying the printing paste on the screen onto the substrate; Evacuating the screen back a predetermined interval above the substrate to which the printing paste is applied; Moving the coating film drying means through a space formed between the to-be-printed object and the screen spaced therefrom, so as to face each other upward on the to-be-printed object, And drying the to-be-printed object by horizontally moving the coated film-drying means through the space between the to-be-printed object and the screen. The method of claim 3, When drying the coating film applied to the to-be-printed object, the coating film drying method of the screen-type printing coating device, characterized in that the drying / curing at a low temperature using a short wavelength ultraviolet irradiation device. The main body on which the table on which the to-be-printed object is placed is located at the upper part thereof, A screen positioned on the table and having a predetermined mask; A screen retirement means for placing the screen directly above the to-be-printed object placed on the table before printing application, and removing the screen from above the directly to-be-printed object placed on the table after the printing application is completed; A support table installed at one side of the main body, A motor built in the support table and selectively forward and reverse rotation; A belt coupled to the shaft of the motor and rotating; A mounting plate coupled to one side of the belt and linearly reciprocating so as to cover an upper table area in a space between the screen evacuation means and the table when the screen is displaced upwardly; And a coating film drier for mounting on one end of the mounting plate and drying the coating film formed on the to-be placed on the table when the mounting plate is moved into the table upper region. The main body on which the table on which the to-be-printed object is placed is located at the upper part thereof, A screen positioned on the table and having a predetermined mask; A screen retirement means for positioning the screen immediately above the to-be-printed object placed on the table, and removing the screen and the table from above directly to the to-be-printed material after completion of printing application; A support table installed at one side of the main body, A motor mounted on the support table and selectively forward and reverse rotation; A ball screw device for advancing the table on which the to-be-printed object is placed into the main body or moving out toward the support table according to the forward and reverse rotation of the motor, And a coating film drying apparatus fixed to an upper portion of the boundary point of the main body and the support table. 22. The screen printing coating device according to claim 20 or 21, wherein the coating film drying means is a short wavelength ultraviolet irradiation device.

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