JPH10217423A - Screen print coating apparatus and drying method for coated film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To immediately dry a coated film in the state that a matter to be printed remains placed on a table after print coating of the matter with the film. SOLUTION: This apparatus print coats a matter P1 to be printed placed on a table 22 with printing paste by using a screen 62 and a squeegee to form a coated film. After the coating is finished, the screen 62 is retracted upward from directly above position of the matter P1 on the table 33 by a retracting motor. After the screen 62 is retracted, a coated film drying mechanism 91 is moved above opposite position of the matter P1 placed on the table 33 by a moving motor. In this state, a coated film on the matter P1 is dried by the mechanism 91.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen-type printing coating apparatus having a function of drying a coating film printed and coated on a printing substrate, and a method of drying a coating film.

[0002]

2. Description of the Related Art Conventionally, a screen-type printing / coating apparatus has been known as one of printing / applying apparatuses for printing and applying a predetermined coating film on a substrate such as paper or a substrate. As a conventional screen type printing and applying apparatus of this type, a first configuration shown in FIG. 17 and a second configuration shown in FIG. 18 are known.

[0003] In the printing and coating apparatus of the first configuration shown in FIG. 17, a table 122 is fixedly arranged on an apparatus main body 121, and a printing object P such as paper or a substrate is placed on the table 122.
1 is set detachably. Then, the printing material P
In the setting state of 1, the squeegee 124 is slid from the printing start end side to the printing end end side on the screen 123 on which the printing paste is placed, so that the printing paste is printed on the object P1 on the table 122. The coating is performed to form a predetermined coating film.

After the printing is completed, the scraper 125 slides on the screen 122 from the end of printing to the end of printing, so that the printing paste remaining on the screen 122 starts printing. Is scraped back to the side. Thereafter, the printing substrate P1 on which the coating film has been formed is removed from the table 122. Then, by repeating these operations, a coating film is continuously formed on a plurality of printing substrates P1.

On the other hand, in the printing and coating apparatus of the second configuration shown in FIG. 18, a table 122 is mounted on an apparatus main body 121 so as to be disposed and retreatable. Then, as shown in FIG. 19, the table 122 is mounted on the apparatus main body 121 together with the print material P1 in a state where the print material P1 is set on the table 122 on the outer side of the apparatus main body 121.

In this state, as shown in FIG. 20, the squeegee 1 is moved on the screen 123 on which the printing paste is placed.
The printing paste is printed and applied to the object P1 on the table 122 by sliding the 24 from the printing start end side to the printing end end side, and a predetermined coating film is formed. After completion of the printing application, as shown in FIG.
When the scraper 125 is slid from the printing end to the printing start on the screen 122, the printing paste remaining on the screen 122 is scraped back to the printing start.

[0007] Thereafter, as shown in FIG.
22 is removed from the apparatus main body 121 together with the print substrate 121, and the print substrate P1 is removed from the table 122 on the outer side of the apparatus main body 121. Then, by repeating these operations, a coating film is continuously formed on a plurality of printing substrates P1.

FIG. 23 shows a conventional print application process in which a plurality of such screen-type print application devices are provided so that different application films are sequentially formed on one print substrate P1. As described above, each print coating device 126
A, 126B, in a subsequent step, a coating film drying device 127A, 1
27B are arranged. Then, each printing coating device 12
6A and 126B, after the coating film is formed on the printing material P1, the coating film drying devices 127A and 127B
The coating film on the printing substrate P1 is dried.

[0009]

However, in this prior art, the print application process by the print application devices 126A and 126B and the coating film drying process by the coating film drying devices 127A and 127B are different. There was such a problem.

(1) Print coating apparatus 126A, 126B
In the subsequent process, it was necessary to secure a space for disposing the coating film drying devices 127A and 127B, and a large space was required for the entire printing and coating process.

(2) After the printing application is completed, the printing material P
1 is the table 122 of the print coating device 126A, 126B.
It was necessary to carry it out from the top and carry it in and set it in the coating film drying devices 127A and 127B, which significantly reduced the work efficiency.

(3) It takes time from the end of printing and coating to the drying of the coating film, so that the coating film on the printing substrate P1 is drooped and the thickness and shape of the coating film are liable to change. (4) When another work process is interposed between the print coating process and the coating film drying process, the determination as to whether a predetermined coating film is formed is delayed, and the yield is deteriorated. .

[0013] The present invention provides the above (1) to (4).
It is made to solve the problem of. An object of the present invention is to provide a screen-type printing coating apparatus and a method for drying a coating film, which can dry the coating film immediately after the printing of the coating film on the printing material without moving the printing material. It is an object.

[0014]

In order to achieve the above object, according to the first aspect of the present invention, a printing paste is printed on a printing material placed on a table using a screen and a squeegee. A screen-type printing / coating apparatus configured to form a coating film, after the printing application is completed, a screen retreating unit that retreats the screen in a predetermined retreating direction from immediately above a printing target on the table, and a screen retreating unit. After the screen is retreated by the coating film drying means for drying the coating film on the printing material placed on the screen and the screen retreating means, the coating film drying means is relatively positioned at the upper facing position of the printing material. And a relative moving means for relatively moving the table or the coating film drying means.

In this specification, the term “immediately above” refers to the relationship between the screen and the printing material after the printing application is completed, and not only the state where the screen is in contact with the printing material but also when the screen is not touching. This is a purpose including the state of being close.

According to a second aspect of the present invention, in the screen printing / applying apparatus according to the first aspect, the screen retreating device controls the screen retreating means to move the screen in the retreating direction immediately after the printing application is completed. Control means, and movement control means for controlling the movement of the relative movement means to a position facing the upper side of the printing medium after the screen has been withdrawn.

According to a third aspect of the present invention, in the screen type printing / coating apparatus according to the first or second aspect, the retreat direction of the screen is an upward direction of the table.

According to a fourth aspect of the present invention, in the screen-type printing coating apparatus according to any one of the first to third aspects, the coating film drying means comprises a short wavelength ultraviolet irradiation apparatus.

According to a fifth aspect of the present invention, a printing paste is printed on a printing material using a screen and a squeegee to form a coating film, and then the screen is placed from above the printing material. Withdrawal, and then relatively move the coating film drying means to the upper facing position of the printing material,
Further, the coating film on the substrate is dried by the coating film drying means.

Therefore, in the screen printing and coating apparatus according to the first aspect, after the printing and coating of the coating film on the printing substrate is completed, the screen is withdrawn by the screen retreating means from a position immediately above the printing substrate on the table by a predetermined distance. Moved away in the direction. Then, the table or the coating film drying unit is relatively moved so that the coating film drying unit is relatively positioned at the upper position facing the printing medium.
In this state, the coating film on the printing substrate placed on the table is dried by the coating film drying unit.

Therefore, after the printing of the coating film on the printing substrate, the coating film can be immediately dried without leaving the printing substrate on the table and without moving the printing substrate. Therefore, it is not necessary to separately arrange a coating film drying device in a post-process of the printing application device, and it is possible to reduce an installation space in the entire printing application process. Further, it is not necessary to carry out the printing object from the table of the printing / coating apparatus after the printing / coating is completed, and to carry in / set the printing / drying apparatus in a separate coating film drying apparatus, so that the work efficiency can be improved.

Further, the coating film can be dried immediately after the completion of the printing application, and it is possible to prevent the coating film on the object to be printed from drooping and changing the thickness and shape of the coating film. . In addition, since no other working steps are interposed between the printing application step and the coating film drying step, it is determined whether or not a predetermined coating film is formed, following the printing application and drying of the coating film. And increase the yield.

In the screen printing and coating apparatus according to the second aspect, the screen retreating control means controls the movement of the screen retreating means immediately after the printing application is completed,
The screen is moved in the evacuation direction. After leaving the screen, the relative movement means is relatively moved to a position facing the upper side of the printing medium under the control of the movement control means. For this reason, the screen can be reliably moved in the predetermined retreating direction, and the relative moving means can be relatively moved to the upper facing position of the printing medium.

In the screen printing and coating apparatus according to the third aspect, the retreat direction of the screen is set to the upper direction of the table. For this reason, unlike the case where the screen is configured to retreat in the horizontal direction, there is no need to secure a moving space in the horizontal direction of the apparatus main body, and the installation space of the apparatus can be reduced.

In the screen printing and coating apparatus according to the fourth aspect, the coating film drying means is constituted by a short wavelength ultraviolet irradiation apparatus. For this reason, the coating film on the printing substrate can be dried and cured at a low temperature, and it is possible to prevent the possibility that the printing substrate, the coating film, a device equipped with a printing device, or the like is affected by high-temperature heat. .

In the method for drying a coating film on a printing material according to the present invention, a printing paste is printed and applied on the printing material using a screen and a squeegee to form a coating film. The print is retreated from above. Next, the coating film drying unit is relatively moved to a position facing the upper side of the printing substrate. Further, the coating film on the substrate is dried by the coating film drying means. Therefore, the coating film can be dried immediately after the printing of the coating film on the printing material without moving the printing material.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment) A first embodiment in which the present invention is embodied in a screen-type printing / applying apparatus for applying a printing paste to a substrate P1 as an object to be printed will be described below with reference to FIGS. .

As shown in FIG. 1, a screen type printing and coating apparatus 30 of this embodiment applies an XY-θ table apparatus 32 for supporting a substrate P1 and a printing paste to the substrate P1. Print coating mechanism 52 for forming a coating film
And a coating film drying mechanism 9 for drying the coating film on the substrate P1
1 is provided.

As shown in FIGS. 2 to 5, the table device 32 is fixedly disposed on the upper portion of the device main body 31. The table 33 of the table device 32 is rotatably supported by a bearing 34 on the device main body 31 and is rotated by a drive motor (not shown). Also, the bearing body 34
Is mounted movably in the X and Y directions with respect to the apparatus main body 31 and is moved in a predetermined direction by a drive motor (not shown). The substrate P1 is loaded and set at a predetermined position on the table 33.

Next, the print application mechanism 52 will be described in detail. As shown in FIGS. 2 to 5, at the upper four corners of the apparatus main body 31, columns 53 are erected to correspond to the table apparatus 32. A pair of rail support frames 54 is provided between the columns 53 located in the Y direction, and a transport rail 55 is fixed on the rail support frames 54. The column 53 is operatively connected to an evacuation motor 57 (see FIG. 9), which is a driving source, via an elevating mechanism (not shown) provided in the apparatus main body 31. Ascends and descends by rotating. Note that the retreating motor 57 is provided with a rotary encoder, and the rotational drive amount thereof can be detected.

In each rail support frame 54, a ball screw 56 is supported along the transport direction. The ball screw 56 is operatively connected to a transport drive motor (not shown). A nut 58 is screwed into the ball screw 56. The transport frame 59 is fixed to the nut 58. The upper portion of the transfer frame 59 is slidably fitted to the transfer rail 55 in the transfer direction. The nut 58 is connected to the transport rail 5 according to printing conditions based on the drive of the transport drive motor.
5, and the transport frame 59 is moved in the Y direction.

A rectangular print frame 60 is provided above the table device 32, and the print frame 60 is attached to the rail support frame 54 (note that FIGS. For the sake of convenience, the connection structure between the rail support frame 54 and the printing frame 60 is omitted).

A screen frame 61 having a rectangular shape larger than the table 12 is supported on the lower surface side of the printing frame 60, and a screen 62 on which a predetermined mask is applied is extended at a lower end of the screen frame 61. I have. The screen 62 is formed of a woven cloth, and has a coating film of an emulsion formed on both sides thereof. The screen 62 approaches or separates from the table 33 as the printing frame 60 moves up and down. In the vicinity of the support 53, the support 53 when the print frame 60 is located at the upper limit position is provided.
Is provided with an upper limit switch 113 (see FIG. 9) that operates in accordance with the operating position of. The upper limit switch 113 outputs an “ON” signal when the print application mechanism 52 is at the upper limit position.

As shown in FIG.
A support bracket 63 constituting a print head frame is provided between the upper portions of the print head frame. A squeegee 65 for printing and applying a print paste is supported by the support bracket 63 via a squeegee support mechanism 64. Also,
Similarly, a scraper (both not shown) is supported by the support bracket 63 via a scraper support mechanism (not shown).

Then, a printing paste is printed and applied to the substrate P1 placed on the table 33 by using the screen 62 and the squeegee 65 to form a coating film. Also, the departure motor 57,
Elevating mechanism (not shown), support column 53, transport frame 59
Thus, a screen retreating means is constituted, and after the printing of the coating film on the substrate P1, the screen 62 is moved to the substrate P1.
Is retreated upward from the position immediately above.

Next, the coating film drying mechanism 91 will be described in detail. As shown in FIGS. 1 and 4 to 8, a pair of ball screws 92 and 93 are rotatably supported on bearings 94 and 95 on the device body 31 on both upper surfaces of the table device 32. , And extends over substantially the entire length of the apparatus main body 31. Y of ball screw 92, 93
Bevel gears 92a and 93a are fixed to the direction side ends.

A rotating shaft 96 is rotatably supported via a bearing 90 on the side of the apparatus main body 31 in the Y direction, and extends along the X direction. Bevel gears 96a are fixed to both ends of the rotating shaft 96, and the bevel gears 96a are meshed with bevel gears 92a, 93a of the ball screws 92, 93. A moving motor 9 composed of a step motor capable of rotating forward and backward is provided in the apparatus main body 31.
7 are provided. A pulley is fixed to an output shaft of the moving motor 97, and a timing belt 99 is mounted between the pulley and a pulley 98 fixed to the center of the rotating shaft 96.

Accordingly, the rotation of the rotation motor 96 is rotated by the rotation of the moving motor 97 via the timing belt 99, and the driving torque is changed to the bevel gears 96a, 92a.
are transmitted to the ball screws 92 and 93 via the a and 93a. The moving motor 97 is provided with a rotary encoder, and its rotational drive amount can be detected.

As shown in FIG. 1 and FIG.
Above, a pair of guide rails 100 is fixed below the ball screws 92 and 93, and extends in the Y direction. On the guide rail 100, a coating film drying mechanism 91 constituting a coating film drying unit is slidably disposed.
The slider 101 of the coating film drying mechanism 91 is slidably fitted to the guide rail 100, and the upper part thereof is screwed to the ball screws 92 and 93. Therefore, the slider 101 is rotated by the forward / reverse rotation of the ball screws 92 and 93, and the
Direction or anti-Y direction movement.

The moving motor 97 and the rotating shaft 9
6, a ball screw 93 or the like constitutes a relative moving means. After the print application mechanism 52 is retreated from a position immediately above the substrate P1 on the table 33, the coating film drying mechanism 91
Is moved to a position facing the upper side of the substrate P1.

As shown in FIGS. 6 to 8, the slider 1
A side plate 102 is erected on 01 and a horizontal member 103 is laid between the side plates 102. Further, in this embodiment, the coating film drying mechanism 91 is constituted by a short wavelength ultraviolet irradiation device, and a plurality of ultraviolet irradiation tubes are provided on a side opposite to the Y side of the horizontal member 103 via a bracket 104 and a support plate 105. 106 is mounted so as to extend in the X direction.

The cover 107 is attached to the horizontal member 103 so as to cover the bracket 104, the support plate 105, and the ultraviolet irradiation tube 106. A window 108 is provided below the cover 107 so as to extend in the X direction. Then, the coating film on the substrate P1 is irradiated with short-wavelength ultraviolet rays from the ultraviolet irradiation tube 106 through the window 108 of the cover 107, and the coating film is chemically changed at room temperature and dried and hardened. I have.

Next, with reference to FIG. 9, a control circuit of the screen type printing and coating apparatus of this embodiment will be described.
A central processing control unit (hereinafter, referred to as a CPU) 111 includes a control unit, a ROM (not shown) for storing various control programs, and a read / write storage unit for storing various input / output data and for storing calculation results. A RAM (not shown) is provided. The CPU 111
, Constitute a screen leaving control means, a movement control means, and a control means.

The operation table 112 has input keys such as numeric keys, and is connected to the CPU 111. When data such as the operation time of the coating film drying mechanism 91 corresponding to the coating film on the substrate P1 is input by operating the numeric keys or the like of the operation table 112, the CPU 111 stores the data in a predetermined RAM. Store in storage area.

The operation table 112 also has input keys for manually operating each mechanism provided in the screen type printing and coating apparatus 30. The CPU 111 controls the screen based on the operation signals of the input keys. Each mechanism of the type print application device 30 can be controlled.

The upper limit switch 113 is connected to the CP
U111 is electrically connected to the print application mechanism 52.
Is moved to the upper limit position, and the screen 62 is moved to the table 3
When the substrate P1 is retreated from a position immediately above the substrate P1 on the third, an "ON" signal is input to the CPU 111.

Each drive motor for driving the table device 32 to X, Y, θ is electrically connected to the CPU 111, and based on a drive control signal from the CPU 111, drives the table device 32 to X, Y, and θ. Drive to θ. Also,
A rotary encoder (not shown) provided for each drive motor inputs the detection signal to the CPU 111. CP
U111 calculates the drive amount of each drive motor based on the detection signal.

A retreating motor 57, which is a driving source for raising and lowering the column 53, is electrically connected to the CPU 111, and drives the column 53 up and down based on a vertical drive signal from the CPU 111. A rotary encoder (not shown) provided on the evacuation motor 57 has a CPU
The detection signal is input to 111. The CPU 111 calculates the drive amount of the evacuation motor 57 based on the detection signal.

The print application mechanism 52 is electrically connected to the CPU 111 and controls print application based on various print control signals from the CPU 111. Coating film drying mechanism 91
The moving motor 97 is electrically connected to the CPU 111, and rotates forward and backward based on a control signal from the CPU 111. Further, a rotary encoder (not shown) provided in the moving motor 97 inputs the detection signal to the CPU 111. The CPU 111 calculates the driving amount of the moving motor 97 based on the detection signal.

Next, the operation of the screen type printing / coating apparatus configured as described above will be described. By the way, in this print coating apparatus, before the start of print coating, the print frame 6
0 is arranged at a position close to the table 33 of the table device 32. Further, the coating film drying mechanism 91 is disposed at an origin position located on the outer side of the printing frame 60, and
0 is arranged close to the table 33 so as not to interfere.

In this state, when a start signal is input to the CPU 111 by a key operation on the operation table 112,
The evacuation motor 57 is driven by the control of the CPU 111, and the print application mechanism 52 is raised to move the screen 62.
Is moved upward from the table 33. And
In a state in which the screen 62 is separated, the substrate P1 as a printing material is loaded on the table 33 and set at a predetermined position.

Thereafter, by driving the retreating motor 57,
The print application mechanism 52 is lowered, and the screen 62 is moved and arranged at a position immediately above the table 33. In this state, the screen 62 and the squeegee 6
5, a printing paste is printed and applied to the substrate P1 on the table 33 to form a predetermined coating film.

After the printing of the coating film on the substrate P 1, the removal motor 57 is controlled by the CPU 111.
Is driven, the print application mechanism 52 is raised, and the screen 62 is retreated upward from a position immediately above the substrate P1.

In this state, the movement motor 97 is driven under the control of the CPU 111, and the coating film drying mechanism 91 is moved to a position on the table 33 above the substrate P1. Then, while the coating film drying mechanism 91 is reciprocated in the Y direction by the moving motor 97, the coating film on the substrate P1 is irradiated with short-wavelength ultraviolet light from the ultraviolet irradiation tube 106 through the window 108 of the cover 107. You. Thereby, the substrate P
While the substrate 1 is still placed on the table 33, the coating film on the substrate P1 is chemically changed at room temperature and dried and hardened.

After the drying and curing, the substrate P on the table 33
1 is held by an unillustrated unloading device and unloaded from the table 33. The screen type printing and coating apparatus of this embodiment has the following effects.

(A) In the printing and coating apparatus of this embodiment, after the printing and coating of the coating film on the substrate P1 as the printing substrate is completed, the screen 62 is moved on the table 33 by the retreating motor 57 as a screen retreating means. It is configured to retreat in a predetermined retreat direction from immediately above the substrate P1. After the screen 62 retreats, a moving motor 97 as a relative moving means is provided.
As a result, the coating film drying mechanism 91 as the coating film drying unit is moved to a position facing the substrate P1 above, and the substrate P1 placed on the table 33 is moved by the coating film drying mechanism 91.
The upper coating film is dried.

Therefore, immediately after the printing of the coating film on the substrate P1, the coating film is immediately dried while the substrate P1 is placed on the table 33 without being carried out of the table 33 and moved. Can be. Therefore,
It is not necessary to separately arrange a coating film drying device in a post-process of the print coating device, and it is possible to reduce an installation space in the entire print coating process. Further, it is not necessary to carry out the substrate P1 from the table 33 of the print coating device after the completion of the printing application, and carry-in and set the substrate P1 in a separately provided coating film drying device, thereby improving work efficiency.

Further, since the coating film can be dried immediately after the completion of the printing application, it is possible to prevent the coating film on the substrate P1 from being drooped and changing the thickness and shape of the coating film. it can. In addition, since no other working steps are interposed between the printing application step and the coating film drying step, it is determined whether or not a predetermined coating film is formed, following the printing application and drying of the coating film. And increase the yield.

(B) In the print coating apparatus of this embodiment, immediately after the completion of the printing application, the CPU 111 as the screen retreat control means drives and controls the retreat motor 57 as the screen retreat means, so that the screen 62 is driven. It is designed to move in the evacuation direction. After leaving the screen 62, the movement motor 97 as the relative movement means is driven and controlled by the control of the CPU 111 as the movement control means, and the coating film drying mechanism 91 as the coating film drying means is moved above the substrate P1. It is designed to be moved to the opposing position. Therefore, the screen 6
2 can be reliably moved in a predetermined retreat direction, and the coating film drying mechanism 91 can be reliably moved to a position facing the substrate P1 above.

(C) In the printing and coating apparatus of this embodiment, the retreat direction of the screen 62 is set to the upward direction of the table 33. For this reason, unlike the case where the screen 62 is configured to retreat in the horizontal direction, there is no need to secure a moving space in the horizontal direction of the apparatus main body 31, and the installation space of the print coating apparatus can be reduced.

(D) In the print coating apparatus of this embodiment, a coating film drying mechanism 91 as a coating film drying means
Is constituted by a short-wavelength ultraviolet irradiation device provided with a plurality of ultraviolet irradiation tubes 106. For this reason, the coating film on the substrate P1 can be dried and hardened at a low temperature, and it is possible to prevent the substrate P1 and the coating film from being affected by high-temperature heat.

(E) In this embodiment, the coating film drying mechanism 91 as the coating film drying means is arranged (standby) on the apparatus main body 121 while the printing coating is being performed. Therefore, unlike the related art, no installation space for the drying device is required, and the space can be saved.

(Second Embodiment) Next, a second embodiment of the present invention will be described.
This embodiment will be described focusing on parts different from the first embodiment.

In the screen printing and coating apparatus 30 of the second embodiment, as shown in FIGS. 10 and 11, a support 116 is provided outside the apparatus main body 31. A drive belt 117 is laid on top. The drive belt 117 is attached via a mounting plate 118,
A coating film drying mechanism 91 as a coating film drying unit is attached. Then, when the drive belt 117 is rotated by the movement motor 97 as the relative movement means, the coating film drying mechanism 91 is moved to a position on the table 33 above the substrate P1.

Therefore, also in the second embodiment,
As in the first embodiment described above, when printing of the coating film on the substrate P1 is completed, the screen 62 is retreated upward from a position immediately above the substrate P1 on the table 33 as shown in FIG. . 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 moved to a position above the substrate P1.

Then, by the coating film drying mechanism 91,
The coating film on the substrate P1 placed on the table 33 is dried and cured. Therefore, also in the second embodiment, after the substrate P1 is printed and coated with the coating film, the substrate P
The drying and hardening of the coating film can be immediately performed while the substrate 1 is placed on the table 33 without being carried out of the table 33.

(Third Embodiment) Next, a third embodiment of the present invention will be described.
This embodiment will be described with reference to FIGS. 12 to 16 for parts different from the first embodiment.

The third embodiment is embodied in a conventional screen-type printing apparatus having a second configuration. As shown in FIG. 12, a support base 20 is provided on a side of the apparatus main body 31 in the Y direction, and a ball screw 22 extending in the Y direction is rotatable on an upper part of the apparatus main body 31 and on an upper surface of the support base 20. It is supported (only the support base 20 is shown in the figure). A rail (not shown) is provided on the upper part of the apparatus main body 31 and the upper surface of the support base 20 in parallel with the ball screw 22, and the table 21 is mounted on the rail on the support base 20 shown in FIG. It is slidable between two positions between a carry-in / carry-out standby position and a print support position on the apparatus main body 31 shown in FIG.

The ball screw 22 is operatively connected to a forward / reverse rotatable table moving motor 26 provided in the apparatus main body 31. The table 21 is the ball screw 2
2 are attached via nuts 21a. Then, the ball screw 22 is rotated by forward and reverse rotation of the table moving motor 26, and the rotation of the ball screw 22 causes the table 21 to move in the Y direction or the opposite Y direction in the drawing.
Move in the direction.

In this embodiment, the CP
U111 is different from the first embodiment in that
Instead of the control described above, the table moving motor 26 can be controlled.

The CPU 111 constitutes screen leaving control means, second movement control means, and control means. In this embodiment, a coating film drying device 27 as a coating film drying unit is disposed above the support base 20 on the side of the device main body 31. Coating film drying device 27
Is fixed to the support base 20 or the apparatus main body 31 via a bracket (not shown). The coating film drying device 27 is composed of a short wavelength ultraviolet irradiation device.
UV irradiation tubes 1 supported so as to extend in the direction
06 (in the figure, one ultraviolet irradiation tube 106 is shown as a representative for convenience of explanation). The coating film drying device 27 is connected to the CPU 11
1 is electrically connected so as to be able to control turning on and off.

In the figure, the print application mechanism 52 and the like
Since the configuration is the same as that of the first embodiment, the scraper 2
5, screen 62, screen frame 61, squeegee 65
Only a schematic diagram is shown.

Now, the operation of the screen printing apparatus configured as described above will be described. With the table 21 positioned at the carry-in / carry-out standby position shown in FIG.
The print substrate P1 is set on the top. In this state, the control of the CPU 111 is started by a key operation on the operation table 112, the retreat motor 57 is driven, the print application mechanism 52 is raised, and the screen 62 is moved upward from the apparatus main body 31. You. And this screen 62
In the separated state, the CPU 111 rotates the table moving motor 26 as shown in FIG.
Is placed at a printing support position on the apparatus main body 31 together with the printing material P1. When the table 21 is moved,
Under the control of the CPU 111, the ultraviolet irradiation tube 106 of the coating film drying device 27 is turned off.

Thereafter, by driving the retreating motor 57,
The print application mechanism 52 is lowered, and the screen 62 is moved and arranged at a position immediately above the table 21. In this state, the screen 62 and the squeegee 6
5, a printing paste is printed and applied to the substrate P1 on the table 33 to form a predetermined coating film. After the printing and coating of the coating film on the substrate P1, the CPU
The retreating motor 57 is driven by the control of 111, the print application mechanism 52 is raised, and the screen 62 is moved to the substrate P1.
Is retreated upward from the position immediately above.

After the printing is completed, as shown in FIG. 15, the scraper 25 is slid on the screen 62 from the end of printing to the end of printing (Y direction) from the end of printing. The printing paste remaining on 62 is scraped back to the printing start end.

Next, the CPU 111 rotates the table moving motor 26 in the reverse direction, and moves the table 21 to the printing medium P1.
At the same time, it moves from the printing support position on the apparatus main body 31 to the carry-in / carry-out position on the support base 20. At this time, the CPU 11
1 controls the table moving motor 26 to move at a lower speed than when moving from the support base 20 to the apparatus main body 31 side. When moving from the apparatus main body 31 of the table 21 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.

As a result, while the table 21 is being moved in the Y direction by the table moving motor 26, the coating film on the substrate P 1 is irradiated with short-wavelength ultraviolet rays from the ultraviolet irradiation tube 106. Thus, while the substrate P1 is placed on the table 21, the coating film on the substrate P1 is chemically changed at room temperature and dried and hardened.

Thereafter, as shown in FIG.
1 is withdrawn from the apparatus main body 121 together with the substrate P1, and the substrate P is
1 is removed. Then, by repeating these operations, a coating film is continuously formed on a plurality of printing substrates P1.

(1) In this embodiment, the table moving motor 26 is controlled so as to move at a lower speed than when moving from the support base 20 to the apparatus main body 31 side, and the motor is moved at a lower speed. In this state, the substrate P1 was irradiated from the ultraviolet irradiation tube 106. As a result, the coating film on the substrate P1 can be sufficiently dried and cured.

The embodiment of the present invention is not limited to the configuration of the above embodiment, but may be as follows. (1) In the above embodiment, the table mechanism 32 is fixedly arranged on the apparatus main body 31. However, the table 33 is configured to be detachable from the apparatus main body 31,
In a state in which the printing material P1 is set on the table 33 on the outside of the table 33, the table 33 is
You may comprise so that it may carry in and mount on the apparatus main body 31.

(2) In the above embodiment, the movement of the coating film drying mechanism 91 in the Y direction is performed by the movement motor 97, but it may be configured to be performed by an air cylinder or a hydraulic cylinder.

(3) In the above embodiment, the lifting and lowering movement of the printing frame 60 is performed by the retreating motor 57, but may be configured to be performed by an air cylinder or a hydraulic cylinder.

(4) In the above embodiment, the screen 62
Is set to the upper direction of the table 33, but the retreat direction of the screen 62 may be set to the side of the table 33.

(5) In the above embodiment, the coating film drying means is constituted by a short wavelength ultraviolet irradiation device, but may be constituted by an infrared drying device or a hot air drying device. Next, technical ideas other than the inventions described in the claims that can be understood from the embodiment will be described together with their effects.

(A) The screen-type printing / coating apparatus according to claim 1, wherein the coating film drying means is arranged on the apparatus main body on which a table is mounted in a state where printing is applied. With this configuration, since the coating film drying unit is disposed on the apparatus main body, unlike the related art, the installation space for the drying apparatus is not required, and the space can be saved.

[0086]

According to the first and fifth aspects of the present invention, after the printing of the coating film on the printing substrate, the printing substrate is placed on the table without being carried out of the table and moved. In this state, the coating film can be immediately dried.

According to the second aspect of the present invention, the screen can be reliably moved in the predetermined retreating direction, and the coating film drying means can be relatively moved and disposed at a position facing the printing material.

According to the third aspect of the present invention, since the screen is retreated upward, the moving space in the lateral direction of the apparatus main body is increased as in the case where the screen is retreated in the lateral direction. There is no need to secure it, and the installation space for the device can be reduced.

According to the fourth aspect of the present invention, the coating film on the printing substrate can be dried and cured at a low temperature, and the printing substrate and the coating film can be prevented from being affected by high-temperature heat. Therefore, it is possible to improve the quality and the yield of the printing medium.

[Brief description of the drawings]

FIG. 1 is a side view of a coating film drying mechanism in a screen printing and coating apparatus according to a first embodiment.

FIG. 2 is a plan view showing an outline of a print application mechanism in the screen type print application apparatus.

FIG. 3 is a front view showing the outline of the print application mechanism.

FIG. 4 is a front view of a main part of the screen printing and coating apparatus.

FIG. 5 is a front view of a main part of the screen printing and coating apparatus.

FIG. 6 is a plan view of a main part of a coating film drying mechanism.

FIG. 7 is an enlarged plan cross-sectional view of a main part of a coating film drying mechanism.

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

FIG. 9 is a block diagram showing a control circuit of the screen type printing / coating apparatus.

FIG. 10 is a side view showing a screen-type printing / coating apparatus according to a second embodiment.

FIG. 11 is a side view showing the operation state of FIG. 10;

FIG. 12 is a side view showing a screen type printing and applying apparatus according to a third embodiment.

FIG. 13 is a schematic side view showing the operation of the print application device following FIG. 12;

FIG. 14 is a schematic side view showing the operation of the print application apparatus of FIG.

FIG. 15 is a schematic side view showing the operation of the print application device following FIG. 14;

FIG. 16 is a schematic side view showing the operation of the print application device following FIG. 15;

FIG. 17 is a schematic side view showing a first configuration of a conventional screen type printing / coating apparatus.

FIG. 18 is a schematic side view showing a second configuration of a conventional screen type printing / coating apparatus.

FIG. 19 is a schematic side view showing the operation of the print application device in FIG. 18;

FIG. 20 is a schematic side view showing the operation of the print application device following FIG. 19;

FIG. 21 is a schematic side view showing the operation of the print application device following FIG. 20;

FIG. 22 is a schematic side view showing the operation of the print application device following FIG. 21;

FIG. 23 is an explanatory view showing a print application step including a conventional screen type print application apparatus.

[Explanation of symbols]

Reference numeral 30: screen-type printing / coating apparatus, 31: apparatus main body, 3
2 ... XY-θ table device, 33 ... table, 52 ...
Printing application mechanism, 53 ... column, 57 ... motor for evacuation, 59
... Conveyance frame (constitutes screen retreating means with retreat motor 57, support 53, etc.), 60 ... print frame,
61: screen frame, 62: screen, 65: squeegee, 91: coating film drying mechanism constituting coating film drying means,
92, 93: ball screw; 96: rotating shaft; 97: moving motor (constituting relative moving means together with rotating shaft 96, ball screws 92, 93, etc.); 103: horizontal member, 1
06 ... ultraviolet irradiation tube, 111 ... CPU constituting screen leaving control means and movement control means, P1 ... substrate.

Claims (5)

[Claims] 1. A screen printing and coating apparatus which prints and applies a printing paste to a printing material placed on a table by using a screen and a squeegee to form a coating film. After finishing, the screen retreating means for retreating the screen in a predetermined retreat direction from immediately above the printing material on the table, a coating film drying means for drying a coating film on the printing material placed on the table, and After the screen is retreated by the screen retreating means, a relative moving means for relatively moving the table or the coating film drying means so that the coating film drying means is relatively positioned at the upper position facing the printing medium. Screen printing and coating equipment. 2. A screen retreat control means for controlling the screen retreat means to retreat the screen in a retreat direction immediately after the printing application is completed; and 2. The screen printing and coating apparatus according to claim 1, further comprising a movement control means for controlling movement to an upper facing position. 3. The screen printing and coating apparatus according to claim 1, wherein the retreat direction of the screen is an upward direction of a table. 4. The screen printing and coating apparatus according to claim 1, wherein said coating film drying means comprises a short wavelength ultraviolet irradiation apparatus. 5. A printing paste is printed and applied on a printing material using a screen and a squeegee to form a coating film, and then the screen is retreated from above the printing material.
A method for drying a coating film on a print object, wherein the coating film drying means is relatively moved to a position facing the upper side of the print material, and the coating film drying means dries the coating film on the print material.