JP2011178078A - Screen printer, and method for conveying and releasing article to be printed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform a process wherein a printing material is printed on a to-be-printed sheet, and the to-be-printed sheet on which the printing material has been printed is released from a screen plate in a short period of time. <P>SOLUTION: A supporting body which supports the to-be-printed sheet 2 is provided on a plate separating unit 10 which is installed to be slidable by a moving mechanism 15. When the to-be-printed sheet 2 on which the printing material has been printed by a squeegee 5 is released from the screen plate 4, the squeegee 5 is slid in the conveying direction of the to-be-printed sheet 2. In this case, by making the supporting body follow the moving of the squeegee 5 and moving the supporting body together with a printing stage 3 while making them synchronize, and thus, the to-be-printed sheet 2 onto which the printing material has been transferred is released from the screen plate 4. In this manner, a printing process wherein the printing material is transferred to the screen plate 4, and a releasing process wherein the to-be-printed sheet on which the printing material has been transferred is released from the screen plate 4 can be performed in parallel, and the production efficiency can be increased. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a screen printing apparatus for peeling a printed material on which a printing material is printed from a screen plate, and a method for conveying and peeling the printed material.

  Conventionally, screen printing is generally performed when transferring a conductive pattern, which is a printing material, to a film, a substrate, or the like. For such screen printing, an on-contact type capable of printing with high accuracy is used. Patent Document 1 discloses that a printing material is transferred to the flexible substrate in a state where a flexible substrate (corresponding to a printing sheet of the present application described later) and a screen plate are in close contact with each other, and then the printing material is transferred. A screen printing apparatus for peeling a flexible substrate from a screen plate is disclosed.

JP 2006-62233 A

  However, in Patent Document 1, as shown in FIG. 2 (c), it is possible to peel the flexible substrate, which is the printing material, from the screen plate as the support is moved in the horizontal direction. Since the so-called plate separation angle at which the flexible substrate is peeled off changes as the support member (reference numeral 4) moves, the quality of the peeled flexible substrate cannot be kept constant, which is not preferable. In FIG. 3 of Patent Document 1, the support member (reference numeral 4) and the tension roller are moved at the same time so that the angle θ between the flexible substrate and the screen plate is maintained at a constant angle. Although the point which peels off a board | substrate is disclosed, in FIG. 3, when the tension roller is moved with a support body, the upper surface to which the printing material of the flexible board was transferred contacts the tension roller. There is a risk of adversely affecting the quality of the peeled flexible substrate with the contact.

  Moreover, in the conventional screen printing apparatus of patent document 1 etc., the printing process which transfers printing material to a flexible substrate, the peeling process which peels the flexible substrate to which the printing material was transferred from the screen plate, the printing area which transfers printing material Various processes are performed, such as transporting and moving a predetermined part of the flexible substrate on the long side, and transporting a predetermined part of the flexible substrate after transfer from the printing area. Conventionally, it has been an important issue how to improve the production efficiency by efficiently performing the manufacturing process in a short time.

  The present invention has been made in view of the above problems, and improves the production efficiency of the printing material, and even if the printing sheet, which is the printing material on which the printing material is printed, is peeled off from the screen plate, the printing material is printed. Another object of the present invention is to provide a screen printing apparatus and a method for conveying and peeling a printed material that can keep the quality of the printed sheet constant with high accuracy.

A screen printing apparatus according to claim 1 comprises:
The squeegee is slid in the conveyance direction of the printing sheet while the screen plate is in close contact with the printing sheet placed in the printing area on the printing stage unwound from the second rotation roller by the first rotation roller. A screen printing apparatus for transferring a printing material to the printing sheet while moving, and peeling the printing sheet to which the printing material is transferred from the screen plate,
A support for supporting the printed sheet to be conveyed;
A moving mechanism that slides the support together with the printing stage in the same direction as the conveyance direction of the printing sheet;
While applying tension by the second rotating roller so that the printing sheet conveyed to the printing area does not bend, the printing sheet is further sucked by the support in the printing sheet. When the squeegee is slid in the transport direction of the printing sheet to transfer the printing material,
Following the movement of the squeegee, the moving mechanism is configured to move the support together with the printing stage in the movement direction of the squeegee, and to peel off the printing sheet on which the printing material is transferred from the screen plate. It is characterized by that.

  According to the invention of the screen printing apparatus of claim 1, the printing material is transferred to the printing sheet while sliding the squeegee in the conveyance direction of the printing sheet in a state where the screen plate is in close contact with the printing sheet. When the printing material is being printed, the printing sheet to which the printing material has been transferred can be peeled off from the screen plate.

A screen printing apparatus according to claim 2 comprises:
On the printing stage, there is provided an air discharge means for blowing air toward a printing sheet in close contact with the screen plate.

  According to the invention of the screen printing apparatus of claim 2, the printing material is transferred to the printing sheet while sliding the squeegee in the conveyance direction of the printing sheet in a state where the screen plate is in close contact with the printing sheet. Since air can be blown toward the printing sheet by the air release means, the printing sheet is moved to the screen plate side by the air blowing force at the time of transferring and peeling the printing material onto the printing sheet. By pushing up, the holding can be stabilized so that the printing sheet is not displaced. In addition, it is possible to prevent the printed sheet from sliding on the printing stage and attaching scratches or dirt during transfer to the printed sheet.

A screen printing apparatus according to claim 3 is the screen printing apparatus according to claim 1 or 2,
As the support, provided with a rotatable suction roller with which the printed sheet is brought into surface contact,
The suction roller rotates while sucking the sheet to be printed in contact with the surface.

  According to the invention of the screen printing apparatus of claim 3, when the printing sheet on which the printing material is transferred is peeled from the screen plate, the sliding roller is slid in the conveying direction of the printing sheet by the moving mechanism. The printing sheet to be bent according to the movement is rotated while being sucked by the suction roller, and the printing sheet wound up by the suction roller is further wound by the second rotating roller to give tension to the printing sheet. Therefore, when the printing material is transferred to the printing sheet while the printing sheet is securely held so as not to be displaced, the printing sheet to which the printing material has been transferred can be peeled off from the screen plate. it can.

A screen printing apparatus according to claim 4 is provided.
A printing material is transferred in a state in which the screen plate is brought into close contact with the printing sheet unwound from the second rotating roller by the first rotating roller, and the printing sheet on which the printing material is transferred from the screen plate A screen printing device that peels off while being conveyed,
A support for supporting the printed sheet to be conveyed;
While applying tension by the second rotating roller so that the printing sheet conveyed to the printing area does not bend, the printing sheet is further sucked by the support. By sliding the plate separating unit that constitutes the support in the same direction as the forward direction to be conveyed by a moving mechanism, the portion of the printing sheet to which the printing material is transferred is peeled from the screen plate,
A second rotating roller for applying tension to the printing sheet is provided at a position where the second rotating roller is not in contact with the portion of the printing sheet that has been peeled off.

  According to the invention of the screen printing apparatus of the fourth aspect, after the printing sheet to which the printing material has been transferred is peeled off from the screen plate, the second rotating roller that applies tension to the printing sheet finishes peeling. It is possible to avoid contact with a portion of the printed sheet.

The screen printing apparatus according to claim 5 is the screen printing apparatus according to claim 4,
As the support configured in the plate separation unit, a rotatable suction roller with which the printing sheet is brought into surface contact,
When peeling the printing sheet on which the printing material is transferred from the screen plate,
While the plate separation unit is slid in the forward direction, the print sheet to be bent is taken up by the suction roller while being sucked by the suction roller, and tension is applied to the print sheet. Give,
The printing sheet to which the printing material is transferred is peeled off from the screen plate at a predetermined angle via the suction roller.

  According to the invention of the screen printing apparatus of claim 5, in claim 4, since the rotatable suction roller is used as a support body that supports the print sheet while sucking it, as the print sheet is conveyed, By rotating the suction roller that supports the printing sheet, it is possible to prevent the surface of the printing sheet guided by the suction roller from being scratched and to be printed with the printing material transferred from the screen plate. Since the sheet can be peeled at a constant angle, it is possible to prevent unevenness in quality from occurring in the portion of the printed sheet to which the printing material that has been peeled off is transferred. In addition, when the printing sheet is peeled at a certain angle, the printing sheet can be sucked by the suction roller, so that the part peeled off from the screen plate can be stabilized so as not to be displaced immediately after peeling. .

The screen printing apparatus according to claim 6 is the screen printing apparatus according to claim 4 or 5,
The first rotating roller is provided so as to be transported in the forward direction by winding the sheet to be printed on the forward direction side with respect to the printing region, and is wound on the backward direction side with respect to the printing region by the first rotational roller. The second rotating roller capable of winding and retreating the taken sheet to be printed;
When applying tension to the printing sheet,
When conveying the printing sheet in the forward direction, while applying tension to the printing sheet while winding the printing sheet by rotation of the first rotating roller,
When the printing sheet is wound in a retreating direction opposite to the advance direction, a tension is applied to the printing sheet while winding the printing sheet by rotation of the second rotating roller. It is characterized by.

  According to the invention of the screen printing apparatus of claim 6, in claim 4 or 5, when the printing sheet is conveyed in the forward direction by winding the first rotating roller, the second rotation is performed by the first rotating roller. When the printing sheet is wound in the backward direction by winding the roller, the tension can be applied to the printing sheet by the second rotating roller. Bending can be prevented.

The method for conveying and peeling the substrate of claim 7 is as follows:
The printing sheet wound around the second rotating roller is conveyed to the printing area by being conveyed in the forward direction by the first rotating roller, and the screen plate is brought into close contact with the printing sheet conveyed to the printing area. And performing a printing process for transferring the printing material to the printing sheet,
In a state where the second rotating roller winds up the printing sheet in a backward direction opposite to the forward direction, and tension is applied so that the printing sheet does not bend,
A suction roller that sucks while supporting the printing sheet disposed on the backward direction side from the printing area is slid in the forward direction from the printing area, and the printing sheet is moved from the screen plate according to the sliding movement. Perform a peeling process to peel at a certain angle,
Of the sheet to be printed that is wound up by the second rotating roller in accordance with the peeling step, a portion to which the printing material is transferred is moved to a predetermined position on the forward direction side from the printing area by the first rotating roller. After carrying out the conveyance process to move forward,
The suction roller is slid in the backward direction side from the printing area, and the suction roller is returned to the original position before being slid in the forward direction in the peeling step.

  According to the invention of the method for conveying and peeling the printed material according to claim 7, the suction roller that sucks the printed sheet is advanced from the printing region while applying the winding tension of the printed sheet with the second rotating roller. By sliding and moving in the direction, the sheet to be printed on which the printing material is printed can be gradually peeled off from the screen plate at a certain angle according to this sliding movement.

The method for conveying and peeling the substrate of claim 8 is the method of claim 7,
The length of the dimension conveyed to the forward direction side of the printing sheet by the first rotating roller is a predetermined dimension equal to or larger than the dimension of the printing area to which the printing material is transferred, for each conveyance process. This is characterized in that the printing material can be repeatedly transferred to the printing sheet.

  According to the invention of the method for conveying / peeling a printed material according to claim 8, the printed sheet advances in each conveying process according to claim 7, with a predetermined dimension equal to or greater than the dimension of the printing area to which the printing material is transferred. Since the sheet is repeatedly conveyed in the direction, the printing material can be continuously printed on and peeled off from the long sheet to be printed that has been conveyed to the printing region.

  According to the screen printing apparatus of the present invention, in a state where the screen plate is brought into close contact with the printing sheet disposed in the printing region on the printing stage unwound from the second rotating roller by the first rotating roller, A screen printing apparatus for transferring a printing material to the printing sheet while sliding a squeegee in a conveying direction of the printing sheet, and peeling the printing sheet to which the printing material is transferred from the screen plate, A support for supporting the print sheet to be printed, and a moving mechanism for sliding the support together with the printing stage in the same direction as the transport direction of the print sheet. A state in which the printing sheet is further sucked by the support while applying tension by the second rotating roller so that the printing sheet does not bend. When the squeegee is slid in the transport direction of the printing sheet in order to transfer the printing material to the printing sheet, the squeegee moves along with the printing stage in the movement direction of the squeegee. The moving mechanism is configured to move the support synchronously and peel the printed sheet onto which the printing material is transferred from the screen plate. As a result, the printing material was transferred when the printing material was transferred to the printing sheet while sliding the squeegee in the conveyance direction of the printing sheet with the screen plate in close contact with the printing sheet. The printing sheet can be peeled from the screen plate. Therefore, since the printing process for transferring (printing) the printing material onto the printing sheet and the peeling process for peeling the printing sheet to which the printing material is transferred from the screen plate can be performed in parallel, the manufacturing efficiency is improved. be able to.

  Furthermore, since the air release means for blowing air toward the printing sheet in close contact with the screen plate is provided on the printing stage, the squeegee is attached in a state where the screen plate is in close contact with the printing sheet. When the printing material is transferred to the printing sheet while being slid in the conveyance direction of the printing sheet, air can be blown toward the printing sheet by the air discharge means, so printing on the printing sheet When the material is transferred, the printing sheet can be pushed up to the screen plate side by the air blowing force, and the holding can be stabilized so that the printing sheet is not displaced. Therefore, the quality of the printing sheet on which the printing process and the peeling process are performed can be stably kept constant with high accuracy.

  Further, the support includes a rotatable suction roller that is in surface contact with the printing sheet, and the suction roller rotates while sucking the surface-contacted printing sheet. When the printing sheet to which the printing material has been transferred is peeled off, the printing roller to be bent according to the sliding movement is sucked by the suction roller while the suction roller is slid in the conveyance direction of the printing sheet by the moving mechanism. The printing sheet that is rotated while being wound by the suction roller can be further wound by the second rotating roller, and tension can be applied to the printing sheet, so that the printing sheet is securely held so as not to be displaced. In this state, when the printing material is transferred to the printing sheet, the printing sheet with the printing material transferred is peeled off from the screen plate. It can be. Therefore, the quality of the to-be-printed sheet in which a printing process and a peeling process are performed can be improved further.

  In addition, the printing material is transferred while the screen plate is in close contact with the printing sheet unwound from the second rotating roller by the first rotating roller, and the printing material to which the printing material is transferred from the screen plate A screen printing apparatus for peeling while conveying a sheet, comprising a support for supporting the conveyed printing sheet, wherein the second printing sheet is conveyed so that the printing sheet conveyed to the printing area is not bent. A mechanism for moving a plate separation unit that constitutes the support in the same direction as the forward direction in which the printing sheet is conveyed while the printing sheet is sucked by the support while applying tension by a rotating roller By sliding the sheet, the part of the printing sheet to which the printing material has been transferred is peeled from the screen plate, and the printing sheet A second rotating roller that applies force is provided at a position that does not come into contact with the part of the printed sheet that has been peeled off, and the second rotating roller that applies tension to the printed sheet has finished peeling. A tension roller that applies tension to the printed sheet, etc., as in the past, when peeling the printed sheet to which the printing material has been transferred from the screen plate, since it can be avoided that the printed sheet is in contact with the printed sheet. Thus, it is possible to prevent the quality of the printing sheet on which the printing material is printed from being deteriorated due to contact of the printing sheet to which the printing material has been transferred.

  Further, since a rotatable suction roller is used as a support for supporting the printing sheet, the suction roller supporting the printing sheet is rotated as the printing sheet is conveyed. Since it is possible to prevent the surface of the printing sheet guided by the roller from being scratched and the like, it is possible to stably peel the printing sheet to which the printing material is transferred from the screen plate at a constant angle, It is possible to prevent unevenness in quality from occurring on the printing sheet to which the printing material having been peeled off is transferred. Therefore, the quality of the printing sheet to which the printing material is transferred can be stably maintained.

  Further, when applying tension to the printing sheet, when the printing sheet is conveyed in the forward direction by winding the first rotating roller, the first rotating roller is used, and when the printing sheet is wound in the backward direction opposite to the forward direction. Since the tension is applied to the printing sheet by the second rotating roller, it is possible to prevent the printing sheet from being bent at any time when the printing sheet is conveyed. It is possible to prevent the quality of the transferred portion from being deteriorated.

  In addition, according to the method for conveying and peeling the printing material of the present invention, the printing sheet wound around the second rotating roller is conveyed to the printing area by being conveyed in the forward direction by the first rotating roller. A screen plate is brought into intimate contact with the printing sheet conveyed to the printing area, and a printing process is performed in which the printing material is transferred to the printing sheet by the screen plate, and the second rotating roller reverses the forward direction. Adsorbing while supporting the print sheet disposed on the retreat direction side with respect to the print area in a state where the print sheet is wound in the retreat direction of the print sheet and tension is applied so that the print sheet is not bent. A roller is slid in a forward direction from the printing area, and a peeling process is performed to peel the printing sheet from the screen plate at a certain angle according to the sliding movement. Of the sheet to be printed that is wound up by the second rotating roller, the portion to which the printing material is transferred is advanced and conveyed by the first rotating roller to a predetermined position on the forward side of the printing area. After performing the transporting process, the suction roller is slid in the backward direction side from the printing area, and the suction roller is returned to the original position before being slid in the forward direction in the peeling process. By separating the printing sheet from the screen plate while keeping the separation angle constant, the quality of the printing sheet on which the printed material is peeled can be made uniform.

  Further, the length of the dimension conveyed by the first rotating roller in the forward direction side of the printing sheet is the same as or larger than the dimension of the print area to which the printing material is transferred, and the conveyance is performed. Since the printing material can be repeatedly transferred to the printing sheet by performing each process, in addition to the printing process of transferring the printing material to the printing sheet, a peeling process performed after the printing process is performed on the printing sheet. On the other hand, it is possible to continuously perform the process, and as a result, the productivity can be improved.

1 is a schematic configuration diagram illustrating an on-contact screen printing apparatus according to a first embodiment. FIG. 6 is an explanatory diagram illustrating an operation of the screen printing apparatus according to the first embodiment. FIG. 5 is a schematic configuration diagram illustrating an on-contact screen printing apparatus according to a second embodiment. FIG. 10 is an explanatory diagram illustrating an operation of the screen printing apparatus according to the second embodiment.

  Examples as modes for carrying out the present invention will be described below. Needless to say, the present invention can be easily applied to configurations other than those described in the embodiments without departing from the spirit of the invention.

  In the on-contact screen printing apparatus 1 shown in FIG. 1, the printing stage 3 is disposed on the printing stage 3 so that the upper part is in contact with the lower surface of the printing sheet 2 conveyed to the printing region P. A squeegee 5 or the like is provided for bringing the screen plate 4 into close contact with the upper surface of the printing sheet 2 in the arranged printing region P and transferring the printing material to the upper surface of the printing sheet 2 in this state. The squeegee 5 is provided so as to be movable along the longitudinal direction (the left-right direction shown in FIG. 1) of the printing sheet 2, and the printing material (this embodiment) is applied to the printing sheet 2 made of high heat-resistant resin in the printing region P. In the example, the conductive paste) is transferred. The printing stage 3 is provided with an air discharge means (not shown) that blows air toward a portion where the printing material is transferred by the squeegee 5 while being in close contact with the screen plate 4, and the printing material is transferred. The parts are indicated by dotted lines in FIG. 1 and FIG. 2 for easy understanding.

  Reference numeral 10 denotes a plate separating unit that peels off the printing sheet 2 to which the printing material in the printing region P is transferred from the screen plate 4. The plate separating unit 10 is provided with a suction roller 11 and a support roller 12 as support members for horizontally supporting the printing sheet 2 in the printing area P, and below the suction roller 11 and is also provided with the printing sheet to the suction roller 11. The first reversing roller 13 that guides 2, the second reversing roller 14 that guides the first reversing roller 13 after reversing the conveyance direction of the printing sheet 2, the moving mechanism 15, the printing stage 3 described above, and the like. I have. The rollers 11, 12, 13, and 14 have a cylindrical shape and are rotatably supported by a frame of a plate separation unit 10 (not shown). The plate separation unit 10 moves the squeegee 5 forward and backward ( The moving mechanism 15 is provided so as to be moved back and forth (left and right direction shown in FIG. 1) so as to follow the left and right direction shown in FIG. A means for sucking the surface of the sheet 2 is provided, and the suction roller 11 can rotate while sucking and sucking the printing sheet 2.

  Further, the screen printing apparatus 1 includes a first rotating roller 21 that is rotated by a first servo motor 20 and a second rotating roller 23 that is rotated by a second servo motor 22. The control means 25 controls the rotation of the first and second rotating rollers 21 and 23, the advance / retreat operation of the plate separating unit 10 by the moving mechanism 15, and the air discharge means.

  Here, the operation of the screen printing apparatus 1 will be described with reference to the drawings. First, the operator pulls out the printing sheet 2 wound around the second rotating roller 23, and the printing sheet 2 is extracted from the second reversing roller 14, the first reversing roller 13, the suction roller 11, and the support roller. 12. Set in a predetermined position in the order of the first rotating roller 21 (the state shown in FIG. 1).

  Next, when the operator performs an operation for operating the screen printing apparatus 1, the control means 25 rotates the first rotating roller 21 via the first servomotor 20, whereby the first rotating roller 21. The printing sheet 2 is wound on the printing sheet 2, and a predetermined portion of the printing sheet 2 is conveyed forward to the printing region P and stopped while applying tension to the printing sheet 2 (the state shown in FIG. 2A). .

  Next, as shown in FIG. 2B, the printing sheet 2 in the printing area P is supported by the suction roller 11 and the supporting roller 12, and the lower part of the screen plate 4 is the upper surface of the printing sheet 2. The squeegee 5 slides horizontally in the range of the printing region P in this state (FIG. 2). The printing material is transferred to the upper surface of the printing sheet 2 in the printing region P (printing process), and the plate separation unit 10 (more specifically, the suction roller 11 of the plate separation unit 10) is As the squeegee 5 is moved following the moving direction, the transferred portion of the printing material on the printing sheet 2 is turned from the screen plate 4 via the suction roller 11 accordingly. As shown in FIG. 2 (c), all the printed portions of the printing material of the printing sheet 2 are peeled off from the screen plate 4 (peeling). Process). When the printing process and the peeling process are performed, the printing sheet 2 is rotated while being sucked by the suction roller 11, and the printing sheet 2 is wound and tension is applied so as not to bend. The second rotating roller 23 is rotated, for example, so that the printing sheet 2 between the second rotating roller 23 and the suction roller 11 is wound and tension is applied.

  Next, after the printing / peeling step, the control means 25 stops the air blowing of the air discharge means, and the first rotating roller 21 is rotated by the rotational drive of the first servo motor 20, as shown in FIG. As described above, the portion n of the printing sheet, to which the printing material is transferred, separated from the screen plate 4 has the same dimension as the dimension of the printing area (or a predetermined dimension larger than that) and the forward direction side of the printing area P. Thereafter, the plate separating unit 10 and the squeegee 5 constituting the suction roller 11 and the like are retracted and returned to their original positions (the state shown in FIG. 2A). Then, by repeating such a series of operations as one cycle, the screen printing apparatus 1 in the order of n, n−1, n−2, n−3, n−4... As shown in FIG. The printing material can be printed on the long sheet 2 to be set on the sheet, and the printed portion can be peeled off from the screen plate 4 immediately thereafter, and then forwardly conveyed to a predetermined discharge destination.

  In addition, as shown in FIG.2 (c) etc., the site | part to which the printing material of the to-be-printed sheet 2 is transcribe | transferred is the upper surface of the to-be-printed sheet 2, On the other hand, the site | part contacted with the rollers 11 and 13 is Since it is arranged so that only the lower surface of the printing sheet 2 is contacted, not the upper surface, the transfer portion of the printing material is directly contacted with the rollers 11 and 13 in the conveying process or the like, so that scratches or the like are attached. Moreover, even if the printing sheet 2 is wound around the second rotating roller 23 in the peeling step, the second rotating roller 23 or the second rotating roller 23 is a means for applying tension to the printing sheet 2. The second reversing roller 14 is disposed so as not to be in contact with the portion of the printing material 2 to which the printing material is transferred, so that it can be used as a means for applying tension to the printing sheet 2 as in the prior art. Printed material printing Possible to surely prevent the printing site is thus scratches is attached to the site by, for example, be in direct contact. Further, when the portion to which the printing material of the printing sheet 2 is transferred is peeled, the opposite surface (lower surface) of the portion to be peeled is adsorbed to the surface of the suction roller 11, so that it is peeled from the screen plate 4. The plate separation unit 10 can be provided with rollers 11, 12, 13, and 14 for guiding the printing sheet 2, and can be stabilized so as not to be displaced immediately after peeling. Therefore, the above-described peeling process by sliding movement of the plate separating unit 10 can be performed without losing the positional relationship of the rollers for guiding the sheet 2 to be printed. At this time, it is possible to suppress deflection and undulation of the printing sheet 2 as much as possible, and to improve and stabilize the accuracy of the repeated printing and peeling process. Note that “turning” in this specification is defined as a state in which a flat or straight object bends like a substantially arcuate shape.

  As described above, in the screen printing apparatus 1 according to the first embodiment, the printing sheet 2 that is unwound from the second rotating roller 23 by the first rotating roller 21 and arranged in the printing region P on the printing stage 3. On the other hand, while the screen plate 4 is in close contact, the printing material is transferred to the printing sheet 2 while sliding the squeegee 5 in the conveying direction of the printing sheet 2, and the printing material transferred from the screen plate 4 is transferred. A screen printing apparatus 1 for peeling a printing sheet 2, printing in the same direction as the conveying direction of the printing sheet 2, such as a suction roller 11 and a supporting roller 12 that support the printing sheet 2 to be conveyed. And a moving mechanism 15 that slides the support together with the stage 3, so that the printing sheet 2 conveyed to the printing area P is not bent, and the second rotation of the suction roller 11. When the squeegee 5 is slid in the conveying direction of the printing sheet 2 in order to transfer the printing material to the printing sheet 2 with tension applied by the roller 23 and the air discharge means, the squeegee 5 moves. A moving mechanism 15 is provided that moves the support in synchronization with the printing stage 3 in the moving direction of the squeegee 5 and separates the printing sheet 2 to which the printing material has been transferred from the screen plate 4. Thus, when the printing material is transferred to the printing sheet 2 while sliding the squeegee 5 in the conveying direction of the printing sheet 2 with the screen plate 4 in close contact with the printing sheet 2. The printing sheet 2 to which the printing material is transferred can be peeled from the screen plate 4. Therefore, the printing process for transferring (printing) the printing material to the printing sheet 2 and the peeling process for peeling the printing material sheet 2 to which the printing material has been transferred from the screen plate 4 can be performed in parallel. Can be improved.

  Furthermore, since an air discharge unit that blows air toward the printing sheet 2 in close contact with the screen plate 4 is provided on the printing stage 3, the screen plate 4 is in close contact with the printing sheet 2. When the printing material is transferred to the printing sheet 2 while sliding the squeegee 5 in the conveying direction of the printing sheet 2, air is blown toward the printing sheet 2 by the air discharge means. Since the printing sheet 2 is transferred to the printing sheet 2 and peeled off, the printing sheet 2 is displaced in a state where the printing sheet 2 is pushed up to the screen plate side by air blowing force and floated in the air. Can be held stable. In addition, it is possible to prevent the printed sheet 2 from sliding on the printing stage 3 and attaching scratches and dirt when the printing material is transferred to and / or peeled from the printed sheet 2. Therefore, the quality of the printing sheet 2 subjected to the printing process and the peeling process can be stably kept constant with high accuracy.

  Next, Example 2 will be described. The on-contact screen printing apparatus 101 in FIG. 3 includes a printing table 103 that sucks the lower surface of the printing sheet 102 that has been conveyed to the printing area P, and a printing sheet that is in the printing area P that is sucked by the printing table 103. A squeegee 105 is provided to bring the screen plate 104 into close contact with the upper surface of the 102 and transfer the printing material to the upper surface of the printing sheet 102 in this state. The squeegee 105 is provided so as to be movable along the longitudinal direction of the printing sheet 102 (the left-right direction shown in FIG. 3), and the printing material (this embodiment) is printed on the printing sheet P made of high heat-resistant resin. In the example, the conductive paste) is transferred. In FIGS. 3 and 4, a dotted line is used for easy understanding of the transferred portion of the printing material.

  Reference numeral 10 denotes a plate separation unit that peels off the printing sheet 102 to which the printing material in the printing region P is transferred from the screen plate 104. The plate separation unit 110 is provided with a suction roller 111 and a support roller 112 as support members for horizontally supporting the printing sheet 102 in the printing area P, and below the suction roller 111, and to the suction roller 111, the printing sheet. A first reversing roller 113 that guides 102, a second reversing roller 114 that guides the first reversing roller 113 after reversing the conveying direction of the printing sheet 102, a moving mechanism 115, the printing table 103 described above, and the like. I have. The rollers 11, 12, 13, and 14 have a cylindrical shape and are rotatably supported by a frame of a plate separation unit 110 (not shown). The plate separation unit 110 is moved back and forth (see FIG. 3) by a moving mechanism 115. The suction roller 111 is provided with means for sucking the surface of the printing sheet 102 on the outer peripheral surface of the suction roller 111, while the suction roller 11 sucks and sucks the printing sheet 2. It can be rotated.

  The screen printing apparatus 101 includes a first rotating roller 121 that is rotated by a first servo motor 120 and a second rotating roller 123 that is rotated by a second servo motor 122. The control unit 125 controls the operation of the rotational driving of the first and second rotating rollers 21 and 23, the advance / retreat operation of the plate separating unit 110 by the moving mechanism 115, the raising / lowering operation of the printing table 103, and the like.

  Here, the operation of the screen printing apparatus 101 will be described with reference to the drawings. First, the operator pulls out the printing sheet 102 wound around the second rotating roller 123, and the printing sheet 102 is extracted from the second reversing roller 114, the first reversing roller 113, the suction roller 111, and the support roller. 112 and the first rotating roller 121 are set at predetermined positions in the order (the state shown in FIG. 3).

  Next, when the operator performs an operation for operating the screen printing apparatus 101, the control unit 125 rotates the first rotating roller 121 via the first servo motor 120, whereby the first rotating roller 121. Then, the printing sheet 102 is wound up, and while applying tension to the printing sheet 102, a predetermined portion of the printing sheet 102 is conveyed forward to the printing region P and stopped (the state shown in FIG. 4A). .

  Next, as shown in FIG. 4B, the lower surface of the printing sheet 102 in the printing region P is sucked to the upper part of the printing table 103 (reference numeral 3 indicated by a two-dot chain line) in the raised position. In this state, the lower part of the screen plate 104 is brought into close contact with the upper surface of the printing sheet 102, and the squeegee 105 is slid horizontally within the printing area P so that the upper surface of the printing sheet 102 is moved. The printing material is transferred (printing process).

  Next, after the suction force of the printing table 103 is released by the control means 125 and the printing table 103 is slightly lowered (more specifically, lowered by about 1 to 2 mm), as shown in FIG. 111 is rotated and rotated while the surface of the printing sheet 102 (the lower surface side to which the printing material is not transferred) is sucked on the outer peripheral surface thereof, and is wound and applied with tension so that the printing sheet 102 does not bend. As the second rotating roller 123 is rotated, the printing sheet 102 between the second rotating roller 123 and the suction roller 111 is wound so as not to bend and tension is applied, and the plate When the separation unit 110 is moved forward (to the right as shown in FIG. 4), the transferred portion of the printing material on the printing sheet 102 is transferred to the screen plate 104 or accordingly. As turning over the suction roller 111 Yuku are peeled at an angle gradually (plate releasing). 4D, when the plate separation unit (more specifically, the suction roller 111 of the plate separation unit 110) 10 is slid in the forward direction from the printing area P, the surface of the suction roller 111 is covered. The suction force for adsorbing the printing sheet 102 is released, and the printed material portion of the printing sheet 102 arranged in the printing region P is peeled off from the screen plate 104 (peeling step). ). As shown in FIG. 4D, the portion of the printing sheet 102 to which the printing material is transferred is the upper surface of the printing sheet 102, while the portion that is in contact with the rollers 11 and 13 is the portion to be printed. Since the printing sheet 102 is disposed so that only the lower surface, not the upper surface, is touched, the transfer portion of the printing material is directly contacted with the rollers 11 and 13 in the transporting process and the like, so that scratches are attached. Moreover, even if the printing sheet 102 is wound around the second rotating roller 123 in the peeling step, the second rotating roller 123 or the second rotating means that is means for applying tension to the printing sheet 102. The reversing roller 114 is arranged so as not to come into contact with the portion of the printing sheet 102 to which the printing material is transferred, so that the tension is applied to the printing sheet 102 as in the prior art. Printed print site print material means for providing can be reliably prevented from being scratched or the like attached to the site by, for example, be in direct contact. Further, when peeling the transferred portion of the printing material on the printing sheet 102, the opposite surface (lower surface) of the peeled portion is adsorbed to the surface of the suction roller 111, so that it is peeled off from the screen plate 104. The plate separation unit 110 can be provided with rollers 11, 12, 13, and 14 for guiding the printing sheet 102, and can be stabilized so as not to be displaced immediately after peeling. Since the positional relationship of the rollers for guiding the printing sheet 102 is not broken, the above-described peeling process by the sliding movement of the plate separating unit 110 can be performed. In addition, it is possible to suppress bending and undulation of the printing sheet 102 as much as possible, and to improve and stabilize the accuracy of the repeated peeling process. It made. Note that “turning” in this specification is defined as a state in which a flat or straight object bends like a substantially arcuate shape.

  Subsequently, after the peeling step, the first rotating roller 121 is rotated by the rotation drive of the first servo motor 120, and the printing material peeled off from the screen plate 104 is transferred as shown in FIG. The portion n of the printed sheet is conveyed in the forward direction side with respect to the printing area P (with a predetermined dimension larger than the dimension of the printing area) (conveying process), and then the suction roller 111 is configured. The plate separating unit 110 and the squeegee 105 to be moved back to the original positions and returned (the state shown in FIG. 4A). Then, by repeating such a series of operations as one cycle, as shown in FIG. 3, the screen printing apparatus 101 in the order of n, n−1, n−2, n−3, n−4. The printing material can be printed on the long printing sheet 102 set in the sheet, peeled off from the screen plate 104, and then forwardly conveyed to a predetermined discharge destination.

  As described above, the screen printing apparatus 101 according to the second exemplary embodiment includes the suction roller 111 and the support roller 112 as the support body that horizontally supports the sheet to be printed 102 to be conveyed in the printing region P. In order to prevent the printed sheet 102 being conveyed from being bent, it is rotated while being sucked by the suction roller 111 to apply tension to the printed sheet 102, and is further wound by the second rotating roller 123. While applying tension to the printing sheet 102, the plate separation unit 110 that constitutes the suction roller 111 and the like is slid in the forward direction by the moving mechanism 115 in the same direction as the forward direction in which the printing sheet 102 is conveyed. The printing sheet 102 to which the printing material as a printed material is transferred can be peeled off from the screen plate 104, Since the second rotating roller 123 that applies tension to the sheet 102 is disposed at a position that does not contact at least the portion of the printing sheet 102 that has been peeled off, the second rotation roller 123 that applies tension to the printing sheet 102. Since it is possible to prevent the portion of the printing sheet 102 to which the printing material is transferred from coming into contact with the roller 123, it is possible to prevent problems that affect the quality of the printing sheet 102 on which the printing material is printed. Can do.

  Further, a rotatable suction roller 111 is used as a support for horizontally supporting the printing sheet 102, and the other rollers 12, 13, 14, 21, 23 are also rotatably provided. Since each of the rollers on which the printing sheet 102 is set is rotated in conjunction with the printing sheet 102 being conveyed, the printing sheet 102 guided by the rollers 11, 12, 13, 14, 21, 23. In addition to preventing the surface of the sheet from being scratched, it is possible to peel off the printed sheet 102 to which the printing material has been transferred from the screen plate 104 by turning it over at a certain angle. It is possible to suppress the occurrence of uneven quality in the portion of the printing sheet 102 to which the printing material is transferred. Therefore, the quality of the printing sheet 102 to which the printing material is transferred can be stably maintained.

  Further, when applying tension to the printing sheet 102, when the printing sheet 102 is conveyed in the forward direction by winding the first rotating roller 121, the first rotating roller 23 winds the second rotating roller 123. When the printing sheet 102 is wound in the reverse direction by the second rotation, tension is applied to the printing sheet 102 by the second rotating roller 21, so that the printing sheet 102 can be conveyed at any time when the printing sheet 102 is moved forward or backward. Can be prevented, and the portion to which the printing material is transferred due to the bending of the printing sheet 102 can be prevented from deteriorating in quality.

  In addition, according to the method for conveying and peeling the printing material of the present invention, the printing region P is conveyed by conveying the printing sheet 102 wound around the second rotating roller 123 in the forward direction by the first rotating roller 121. Printing in which the screen plate 104 is brought into intimate contact with the printing sheet 102 conveyed to the printing region P, and the printing material is transferred to the printing sheet 102 in close contact with the screen plate 104 using the squeegee 105. In the state where the printing sheet 102 is wound in the backward direction opposite to the forward direction by the second rotating roller 123 and tension is applied so that the printed sheet 102 is not bent, the backward direction from the printing area. The suction roller 111 that sucks while supporting the printing sheet 102 arranged on the side is slid while rotating in the forward direction from the printing region P, and this A peeling process is performed in which the printing sheet 102 is peeled off from the screen plate 104 at a certain angle according to the ride movement, and the printing sheet 102 wound up by the second rotating roller 123 in accordance with the peeling process. After performing a transporting process in which the portion to which the printing material P has been transferred is advanced and transported by the first rotating roller 121 to a predetermined position on the forward direction side with respect to the printing region P, the suction roller 111 is moved backward with respect to the printing region P. Since the suction roller 111 is returned to the original position before being slid in the forward direction in the peeling step, the plate separation angle at which the printing sheet 102 is peeled from the screen plate 104 is thereby removed. Can be peeled while maintaining a constant, and the printing sheet of the printing material is not printed because the plate separation angle is not kept constant. It can be 102 quality is prevented so as not to nonuniform.

  Further, the length of the sheet to be printed 102 conveyed by the first rotating roller 121 in the forward direction is set to a predetermined dimension equal to or greater than the dimension of the printing region P to which the printing material is transferred, for each conveyance process. As a result, the printing process for transferring the printing material and the peeling process performed after the printing process can be continuously performed on the long printed sheet 102, and thus productivity can be improved. it can.

  As mentioned above, although Example 1 and 2 were demonstrated, this invention is not limited to the said Example, A various deformation | transformation implementation is possible, For example, as an object to which printing material is transcribe | transferred, it is flexible. Any film-like material may be used, and it may be appropriately selected.

DESCRIPTION OF SYMBOLS 1 Screen printer 2 Sheet to be printed 3 Printing stage 4 Screen plate 5 Squeegee 11 Suction roller (support)
12 Support roller (support)
DESCRIPTION OF SYMBOLS 15 Movement mechanism 21 1st rotation roller 23 2nd rotation roller 101 Screen printing apparatus 102 Printed sheet 104 Screen plate 110 Plate separation unit 111 Adsorption roller (support)
115 Moving Mechanism 121 First Rotating Roller 123 Second Rotating Roller P Printing Area

Claims (8)

The squeegee is slid in the conveyance direction of the printing sheet while the screen plate is in close contact with the printing sheet placed in the printing area on the printing stage unwound from the second rotation roller by the first rotation roller. A screen printing apparatus for transferring a printing material to the printing sheet while moving, and peeling the printing sheet to which the printing material is transferred from the screen plate,
A support for supporting the printed sheet to be conveyed;
A moving mechanism that slides the support together with the printing stage in the same direction as the conveyance direction of the printing sheet;
While applying tension by the second rotating roller so that the printing sheet conveyed to the printing area does not bend, the printing sheet is further sucked by the support in the printing sheet. When the squeegee is slid in the transport direction of the printing sheet to transfer the printing material,
Following the movement of the squeegee, the moving mechanism is configured to move the support together with the printing stage in the movement direction of the squeegee, and to peel off the printing sheet on which the printing material is transferred from the screen plate. A screen printing apparatus characterized by that.   The screen printing apparatus according to claim 1, further comprising: an air discharge unit that blows air toward the printing sheet in close contact with the screen plate on the printing stage. As the support, provided with a rotatable suction roller with which the printed sheet is brought into surface contact,
3. The screen printing apparatus according to claim 1, wherein the suction roller rotates while sucking the printing sheet in contact with the surface. A printing material is transferred in a state in which the screen plate is brought into close contact with the printing sheet unwound from the second rotating roller by the first rotating roller, and the printing sheet on which the printing material is transferred from the screen plate A screen printing device that peels off while being conveyed,
A support for supporting the printed sheet to be conveyed;
While applying tension by the second rotating roller so that the printing sheet conveyed to the printing area does not bend, the printing sheet is further sucked by the support. By sliding the plate separating unit that constitutes the support in the same direction as the forward direction to be conveyed by a moving mechanism, the portion of the printing sheet to which the printing material is transferred is peeled from the screen plate,
A screen printing apparatus, wherein a second rotating roller for applying tension to the printing sheet is provided at a position where the second rotating roller is not in contact with the part of the printing sheet that has been peeled off. As the support configured in the plate separation unit, a rotatable suction roller with which the printing sheet is brought into surface contact,
When peeling the printing sheet on which the printing material is transferred from the screen plate,
While the plate separation unit is slid in the forward direction, the print sheet to be bent is taken up by the suction roller while being sucked by the suction roller, and tension is applied to the print sheet. Give,
5. The screen printing apparatus according to claim 4, wherein the printing material sheet to which the printing material has been transferred is peeled from the screen plate at a predetermined angle via the suction roller. The first rotation roller that transports the print target sheet in the forward direction by winding the sheet to be printed in the forward direction side of the print region, and is wound by the first rotary roller in the backward direction side of the print region. The second rotating roller capable of winding and retreating the taken sheet to be printed;
When applying tension to the printing sheet,
When conveying the printing sheet in the forward direction, while applying tension to the printing sheet while winding the printing sheet by rotation of the first rotating roller,
When the printing sheet is wound in a retreating direction opposite to the advance direction, a tension is applied to the printing sheet while winding the printing sheet by rotation of the second rotating roller. 6. The screen printing apparatus according to claim 4 or 5, wherein: The printing sheet wound around the second rotating roller is conveyed to the printing area by being conveyed in the forward direction by the first rotating roller, and the screen plate is brought into close contact with the printing sheet conveyed to the printing area. And performing a printing process for transferring the printing material to the printing sheet,
The printed sheet is wound in a backward direction opposite to the forward direction by the second rotating roller, and is placed on the backward direction side with respect to the printing area in a state where tension is applied so that the printed sheet does not bend. A suction roller that sucks while supporting the printed sheet that has been slid in the forward direction from the printing area, and performs a peeling step to peel the printed sheet from the screen plate at a constant angle according to the sliding movement,
Of the sheet to be printed that is wound up by the second rotating roller in accordance with the peeling step, a portion to which the printing material is transferred is moved to a predetermined position on the forward direction side from the printing area by the first rotating roller. After carrying out the conveyance process to move forward,
Conveying the substrate to be printed, wherein the suction roller is slid in the backward direction side of the printing area, and the suction roller is returned to the original position before being slid in the forward direction in the peeling step. Peeling method.   The length of the dimension conveyed to the forward direction side of the printing sheet by the first rotating roller is a predetermined dimension equal to or larger than the dimension of the printing area to which the printing material is transferred, for each conveyance process. 8. The method for conveying and peeling a printing material according to claim 7, wherein the printing material can be repeatedly transferred to the printing sheet.

Images