JP2012091331A - Method of printing object with cylindrical side face and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method of printing an object with a cylindrical side face whereby the cost of equipment is suppressed low and the object can be printed while being conveyed, and to provide an apparatus therefor.SOLUTION: A paint 3 is supplied onto a stretched screen plate 1. The paint 3 is printed on an object 5 with the cylindrical side face through the screen plate 1 by movement of a squeegee 4. The object 5 is moved along the screen plate 1 following the movement of the squeegee 4 and is rotated not to slide to the screen plate 1 in the printing method. The apparatus includes the screen plate 1, a screen plate installation means 2 which stretches the screen plate 1 to be nearly flat, a paint supply means, the squeegee 4, a squeegee driving means, a moving means which moves the object 5 along the screen plate 1, a rotating means which rotates the object 5 around its center axis, and a control part which controls the squeegee driving means, moving means and rotating means.

Description

  The present invention relates to a method and apparatus for printing on a substrate having a cylindrical side surface by screen printing.

  2. Description of the Related Art Conventionally, as shown in FIG. 2, screen printing is generally performed in which a coating material is supplied to a screen plate 1 stretched in a substantially planar shape and printed on a substrate 5 having a substantially planar shape ( For example, see Patent Document 1).

  Further, as shown in FIG. 3, screen printing is also performed in which a coating material is supplied to the screen plate 1 formed in a substantially cylindrical shape and printed on a substrate 5 having a substantially planar shape (see, for example, Patent Document 2). ). In the figure, reference numeral 3 indicates a paint, reference numeral 4 indicates a squeegee, reference numeral 6 indicates a rotating means of the screen plate 1, reference numeral 7 indicates a conveying means of the substrate 5, and an arrow indicates a moving direction or a rotating direction. Indicates.

  In the conventional example shown in FIG. 2, the screen plate 1 has only to be stretched in a substantially flat shape, the equipment configuration is simple, and the equipment cost is low. On the other hand, in the conventional example shown in FIG. 3, the screen plate 1 is formed in a substantially cylindrical shape, so that it can be used continuously and can be printed while the substrate 5 is being conveyed. The screen plate 1 needs to be formed in a substantially cylindrical shape, and the construction of the equipment is complicated and the equipment cost is high.

  2 and 3 do not print on the substrate 5 having a cylindrical side surface, but those that print on the substrate 5 having a cylindrical side surface are also known.

  As shown in FIG. 4, the paint is supplied to the screen plate 1 formed in a substantially cylindrical shape and printed on the cylindrical side surface of the substrate 5. Note that reference numeral 8 in the figure denotes a rotating means for the substrate 5.

Japanese Utility Model Publication No. 57-83841 Japanese Utility Model Publication No. 60-168934

  However, in the conventional example shown in FIG. 4, although it is possible to print on the substrate 5 having a cylindrical side surface, the screen plate 1 is substantially cylindrical as in the conventional example shown in FIG. Therefore, the equipment configuration is complicated and the equipment cost is high. Furthermore, since the substrate 5 does not move during printing, printing cannot be performed while the substrate 5 is being conveyed, and productivity cannot be improved.

  The present invention has been invented in view of the above-described conventional problems, and the object of the present invention is to reduce the equipment cost and to provide a substrate having a cylindrical side surface that can be printed while being conveyed. It is an object of the present invention to provide a method and an apparatus for printing on a printed matter.

  In order to solve the above problems, the method for printing on a substrate having a cylindrical side surface in the present invention is the following method.

  The coating material is supplied onto the stretched screen plate, and the coating material is printed on the printing material having a cylindrical side surface through the screen plate by the movement of the squeegee, and the printing material follows the movement of the squeegee. And moving along the screen plate and rotating so as not to slide with respect to the screen plate.

  Moreover, the apparatus which prints on the to-be-printed material which has a cylindrical side surface in this invention is the following structures.

  A screen plate, screen plate installation means for installing the screen plate in a substantially planar shape, paint supply means for supplying paint on the stretched screen plate, and supplied on the screen plate A squeegee for attaching the paint to the screen plate, a squeegee driving means for freely moving the squeegee along the screen plate, and a moving means for freely moving a printing material having a cylindrical side surface along the screen plate. And a rotating means for rotating the substrate to be rotated about its central axis, and a control unit for controlling the squeegee driving means, the moving means, and the rotating means.

  With the method and apparatus for printing on a substrate having a cylindrical side surface according to the present invention, the equipment cost can be kept low, printing can be performed while the substrate is being transported, transport time is shortened, and productivity is improved. Is planned.

It is explanatory drawing explaining the method and apparatus of one Embodiment of this invention. It is explanatory drawing explaining the conventional printing method. It is explanatory drawing explaining another conventional printing method. It is explanatory drawing explaining another conventional printing method.

  Hereinafter, the method and apparatus for printing on a substrate having a cylindrical side surface according to the present invention will be described based on the embodiment shown in FIG.

  The screen plate 1 is made of a mesh-like cloth (for example, polyester or silk) and is installed in a state of being stretched in a substantially flat shape by the screen plate setting means 2. As shown in FIG. 1, the screen plate setting means 2 is one in which both ends or the periphery of the screen plate 1 are fixed to a frame, or are clamped by a clamping member, or both ends of the screen plate 1 are wound around a roll. Various forms are well known and are not particularly limited.

  The paint 3 is supplied onto the stretched screen plate 1. The paint supply means for supplying the paint 3 onto the screen plate 1 will not be described in detail by illustration, but a tank for storing the paint 3 and a pump for transporting the paint 3 (if the weight of the paint 3 is used) Various forms such as those that are not required) and valves are already well known and are not particularly limited.

  The paint 3 supplied onto the screen plate 1 adheres to the screen plate 1 while moving together with the squeegee 4 when the squeegee 4 moves along the screen plate 1 stretched. The squeegee 4 can reciprocate along the upper surface of the screen plate 1 by squeegee driving means. The squeegee drive means is not described in detail in the drawings, but is configured by appropriately combining a power source such as a motor, a guide, a speed reduction mechanism, and other transmission mechanisms, and various forms are already well known. There is no particular limitation.

  In the present invention, the substrate 5 has a substantially cylindrical side surface. For example, the printed material 5 is preferably a wrinkle or the like, but is not particularly limited, and may be either a hollow member having a substantially cylindrical shape or a solid member having a substantially circular cross section. Moreover, the to-be-printed material 5 is not limited to a substantially cylindrical side surface, and may have a substantially elliptical side surface.

  The substrate 5 can be moved along the screen plate 1 by the moving means and can be rotated by the rotating means.

  Although the moving means is not described in detail in the drawings, it is configured by appropriately combining a power source such as a motor and a guide, a speed reduction mechanism, other transmission mechanisms, and the like, and various forms are already well known. It is not limited. By the moving means, the substrate 5 and the rotating means can reciprocate along the lower surface of the screen plate 1.

  The rotating means rotates the substrate 5 having a substantially cylindrical side surface around its central axis. In the present embodiment, detailed description is not given by way of illustration, but at least two support rolls that rotatably support the printing material 5 while maintaining the position of the central axis thereof, and an outer surface of the printing material 5 are contacted. A drive roll for rotating the printed product 5 and a power source such as a motor for driving the drive roll are provided. As the rotating means, various other forms such as those inserted into the substrate 5 and rotatably supporting the substrate 5 are already well known and are not particularly limited.

  It also controls paint supply means (mainly its pumps and valves), squeegee driving means (mainly its power source), moving means (mainly its power source), and rotation means (mainly its power source). A control unit comprising a microcomputer is provided to control these operations.

  Next, a printing method will be described.

  The screen plate 1 is stretched substantially flat by the screen plate setting means 2.

  The squeegee 4 is moved from one end side to the other end side of the screen plate 1 by the squeegee driving means during printing, and moves to the right side in FIG. Prior to printing, the squeegee 4 is positioned at the end of the screen plate 1 (the end on the starting point side in the moving direction of the squeegee 4 and the left end in FIG. 1).

  Next, the paint is supplied onto the screen plate 1 by the paint supply means. The position where the paint is supplied is the end side (the right side in FIG. 1) in the traveling direction from the squeegee 4.

  The substrate 5 contacts the lower surface of the screen plate 1 at a portion where the squeegee 4 is located in plan view.

  Next, the squeegee 4 is moved in the traveling direction by the squeegee driving means. Then, the substrate 5 is moved by the moving means in the same direction as the squeegee 4 is moved, and the substrate 5 is rotated around its central axis by the rotating means. In FIG. 1, a straight arrow indicates the moving direction of the squeegee 4 and the substrate 5, and a bent arrow indicates the rotation direction of the substrate 5.

  Here, the moving speed of the squeegee 4 by the squeegee driving means and the moving speed of the printing material 5 by the moving means are synchronized by the control unit. In printing, the lower end of the squeegee 4 is controlled by the control unit so that the lower end of the squeegee 4 is shifted from the central axis of the printed material 5 toward the end point in the traveling direction. To avoid contact.

  In addition, the printing unit 5 is controlled by the control unit so that the printing material 5 rolls without sliding on the lower surface of the screen plate 1 by the rotating means, and is synchronized so that printing does not blur.

  According to the said structure, it becomes possible to print on the to-be-printed object 5 which has a cylindrical side surface, conveying the to-be-printed object 5, and conveyance time is shortened and productivity is improved. Further, since the screen plate 1 does not need to be formed in a substantially cylindrical shape, it is sufficient if the screen plate 1 is stretched in a substantially planar shape, so that the equipment configuration is simple and the equipment cost is low.

1 Screen Plate 2 Screen Plate Installation Method 3 Paint 4 Squeegee 5 Printed Material

Claims (2)

  The coating material is supplied onto the stretched screen plate, and the coating material is printed on the printing material having a cylindrical side surface through the screen plate by the movement of the squeegee, and the printing material follows the movement of the squeegee. A method of printing on a substrate having a cylindrical side surface, wherein the substrate is moved along the screen plate and is rotated so as not to slide with respect to the screen plate.   A screen plate, screen plate installation means for installing the screen plate in a substantially planar shape, paint supply means for supplying paint on the stretched screen plate, and supplied on the screen plate A squeegee for attaching the paint to the screen plate, a squeegee driving means for freely moving the squeegee along the screen plate, and a moving means for freely moving a printing material having a cylindrical side surface along the screen plate. A cylindrical side surface comprising: a rotating means for rotating the substrate to be rotated about a central axis thereof; and a controller for controlling the squeegee driving means, the moving means, and the rotating means. An apparatus for printing on a substrate to be printed.

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