JP2001047596A - Rotary screen printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary screen printer which facilitates improvement of a printing speed and can execute printing with a uniform quality for a long period and which does not stain the peripheries of equipment and facilitates the work for keeping the prescribed quality of a print in a desired shape printed on a printing material. SOLUTION: This rotary screen printer is equipped with a printing plate supporting structure 16 which supports a cylindrical screen printing plate rotatably in a state of the opposite ends of the plate being opened and with a printing plate rotation driving means 18 which drives the printing plate supporting structure 16 to rotate the cylindrical screen printing plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen printing machine, and more particularly, to a rotary screen printing machine using a rotating cylindrical screen printing plate.

[0002]

2. Description of the Related Art In a conventional screen printing, a flat screen printing machine is frequently used. In a flat screen printing machine, a web-shaped or sheet-shaped printing medium is supplied on a support pedestal immediately below a frame supporting a screen, and while the printing medium is stopped on the support pedestal. The frame or the support pedestal is lowered or raised so that the printing medium on the support pedestal abuts on the screen, and then the squeegee is reciprocated on the screen so that the screen has a desired shape previously formed on the screen. The viscous material (for example, ink) on the screen prints the desired shape on the printing material through the printing holes. After the printing is completed, the frame or the support pedestal is raised or lowered so that the print medium on the support pedestal is separated from the screen, and the print medium after the print is completed is moved from the support pedestal.

[0003]

The conventional flat screen printing machine constructed and operated as described above has various problems as described below.

[0004] First, since the printing material stops moving while the desired shape of the printing hole of the screen is printed by the viscous material (eg, ink) from the screen printing machine, the printing is stopped. It is difficult to improve speed.

Secondly, in order for the screen printing machine to always print the desired shape with a viscous substance (eg, ink) on a printing medium with a uniform quality, a squeegee is printed on the screen. The reciprocating motion requires that the viscous material (eg, ink) on the screen must be supplied to the printing holes of the screen at the same pressure. The reciprocating squeegee makes it difficult to improve the printing speed.

Third, if the reciprocating speed of the squeegee is increased to improve the printing speed, the squeegee with the improved reciprocating speed causes viscous substances (eg, ink) to be scattered around the screen from above the screen. Is Rukoto.

Fourth, a viscous material (eg, ink) spread thinly on a screen by a squeegee tends to volatilize a solvent, and the quality of the viscous material in long-time printing, and thus the viscous material, Therefore, the operation of maintaining the quality of the printed matter of a desired shape printed on the printing medium at a constant level is complicated.

The present invention has been made under the above circumstances, and it is an object of the present invention to easily improve the printing speed, to perform printing with a uniform quality over a long period of time, and to stain the periphery of the apparatus. It is an object of the present invention to provide a rotary screen printing machine which can easily maintain the quality of a printed matter having a desired shape printed on a printing medium at a constant level.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object of the present invention, a rotary screen printing machine according to the present invention comprises: a cylindrical screen printing plate rotatable with both ends open; And a printing plate rotation driving means for driving the printing plate support structure to rotate the cylindrical screen printing plate.

In the rotary screen printing machine according to the invention of the present application, characterized in that it is constructed as described above, the cylindrical plate is rotatably supported by the printing plate support structure with both ends open. The viscous material can be supplied to the inside of the cylindrical screen printing plate through at least one of both open ends to the screen printing plate. Similarly, the squeegee is supported in the internal space of the cylindrical screen printing plate by the squeegee support from the outside of the cylindrical screen printing plate via at least one of both open ends with respect to the cylindrical screen printing plate. I can do it.

While the cylindrical screen printing plate on which the viscous material is supplied and the squeegee is supported is rotated by the printing plate rotation driving means, the rotation direction and the rotation speed of the cylindrical screen printing plate are substantially the same. By supplying the printing medium to the portion corresponding to the squeegee on the outer peripheral surface of the cylindrical screen in the same moving direction and moving speed,
The same shape as the printing holes can be printed on the moving printing material by using a viscous material through the printing holes of the cylindrical screen printing plate.

Since the viscous material inside the cylindrical screen printing plate is mostly surrounded by the cylindrical screen printing plate, the solvent hardly volatilizes, and the quality of the viscous material can be maintained even when printing for a long time. By using this viscous material, the quality of the printed matter of a desired shape printed on the printing medium can be easily maintained constant.

The viscous material inside the cylindrical screen printing plate is subjected to a rotational force in the same direction as the rotation of the cylindrical screen printing plate by rotation of the cylindrical screen printing plate. Quality can be maintained at a constant level, and is always collected in a squeegee inside the cylindrical screen printing plate, so that the squeegee always prints viscous materials at substantially the same pressure to print the cylindrical screen printing plate. The quality of the printed matter of a desired shape printed on the printing medium supplied to the holes can be kept constant.

To maintain the quality of the printed matter constant, it is necessary to always apply a predetermined amount (preferably, for printing) to the inside of the cylindrical screen printing plate through at least one of both open ends. To the substrate through the printing holes of the cylindrical screen printing plate (the same amount per unit time as the viscous material applied per unit time).

The viscous material fed into a cylindrical screen printing plate, which is rotated at substantially the same speed in the same direction for a certain printing medium, may greatly wave during rotation of the cylindrical screen printing plate. As a result, the viscous material inside the cylindrical screen printing plate splatters out of the cylindrical screen printing plate during rotation of the cylindrical screen printing plate, and the viscous material around the rotary screen printing machine according to the present invention circulates. There is no stain.

As is apparent from the above description, the rotary screen printing press according to the present invention, characterized in that it is constructed as described above, comprises at least one of both open ends of a cylindrical screen printing plate. It is preferable to provide a viscous material supply means for supplying a viscous material from the outside of the cylindrical screen printing plate to the internal space of the cylindrical screen printing plate via the above.

Since the main structure of the viscous material supply means can be installed outside the cylindrical screen printing plate, the viscous material supply means does not hinder the exchange of the cylindrical screen printing plate. It is also possible to easily carry out maintenance and inspection of itself without being disturbed by the cylindrical screen printing plate.

As is evident from the above, the rotary screen printing press according to the invention, characterized in that it is constructed as described above, also comprises at least both open ends of the cylindrical screen printing plate. It is preferable to provide a squeegee support for supporting the squeegee in the internal space of the cylindrical screen printing plate via one side.

Since the main structure of such a squeegee support can also be installed outside the cylindrical screen printing plate, the squeegee support does not hinder the replacement of the cylindrical screen printing plate, and the squeegee support does not need to be replaced. Can be easily carried out without being disturbed by the cylindrical screen printing plate.

In the rotary screen printing press according to the invention of the present application, characterized in that the cylindrical screen printing plate has a plurality of printing holes and has a circumferential direction between both ends. It is preferable to have a non-porous area where no printing hole exists.

This is because it is possible to enjoy the benefit of having the partition member extending annularly in the circumferential direction along the non-perforated area inside the cylindrical screen printing plate. That is, the inside of the cylindrical screen printing plate is divided into a plurality of portions between the both ends by the partition member, so that a plurality of mutually different types of viscous materials are formed inside the plurality of divided cylindrical screen printing plates. Can be supplied by the above-mentioned viscous material supply means and held independently of each other. Therefore, a plurality of mutually different types of viscous materials can be simultaneously printed on the same printing medium by one cylindrical screen printing plate.

The number of the non-porous regions may be only one, or two or more.

The number of the partition members may be the same as the number of the non-porous regions, or may be smaller than the number of the non-porous regions.

In the case where the inside of the cylindrical screen printing plate is divided into a plurality of sections between the both ends by the partition member, the viscous material supply means is provided with a plurality of sections inside the divided cylindrical screen printing plate. The same type of viscous material or different types of viscous material can be supplied to each of the portions, and the number of the different types may be the same as the number of the plurality of portions. The number may be smaller than the number of the plurality of parts.

When the inside of the cylindrical screen printing plate is divided into a plurality of portions between the both ends by the partition member, a plurality of portions inside the cylindrical screen printing plate, wherein the squeegee support is divided into a plurality of portions, are further provided. Can support squeegees. A rotary screen printing press according to the present invention, characterized in that it is constructed as described above, comprises: pressing against a part of the peripheral surface of a cylindrical screen printing plate, both ends of which are supported by a printing plate support structure; It is preferable that the printing apparatus further includes a pressing member to be printed; and printing medium supply means for supplying a printing medium between a part of the peripheral surface of the cylindrical screen printing plate and the pressing member. Such a pressing member and a medium-to-be-printed conveyance means make it possible to reliably improve the printing performance per unit time in the rotary screen printing machine according to the present invention without deteriorating the printing quality.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0027]

BRIEF DESCRIPTION OF THE DRAWINGS In the accompanying drawings: FIG. 1 is a schematic side view of a rotary screen printer according to one embodiment of the invention; FIG. FIG. 3 is a schematic plan view of a screen printing machine; FIG.
FIG. 3B is a plan view schematically showing a state in which the cylindrical screen printing plate is detached from the printing plate support structure in the rotary screen printing machine of FIG. 3; FIG. 3B is a plan view of FIG.
FIG. 4 is a side view schematically illustrating a cylindrical screen printing plate having been detached and a fixing half ring used for detachably fixing the cylindrical screen printing plate to the printing plate support structure of FIG. FIG. 3C shows a rotary screen printing machine according to an embodiment of the present invention in which the internal space of a cylindrical screen printing plate is partitioned into a plurality of sections by a plurality of annular partition members. FIG. 4 is a longitudinal sectional view schematically showing a state in which the robot is in a state of being in a state.

There is a support base 14 formed by integrally combining a plurality of elongated vertical members 10 and a plurality of elongated horizontal members 12 with each other. On the support 14, a printing plate support structure 16 and a printing plate rotation drive unit 18 are supported.
The printing plate support structure 16 rotatably supports the cylindrical screen printing plate 20 with both ends opened, and the printing plate rotation driving means 18 drives the printing plate support structure 16 to rotate the cylindrical screen printing plate. Rotate 20.

More specifically, the printing plate support structure 16 includes a pair of rotary support members 16a supported on the support base 14 in parallel with each other and an upper end of the pair of rotary support members 16a. And a pair of annular rotating rings 16b supported concentrically and rotatably.

A cylindrical screen printing plate 20 is concentrically detachably attached to each of the inner ends (ends facing each other in the pair of rotating rings 16b) of the pair of rotating rings 16b. A connecting means for supporting is provided.
An outer flange 16c is formed at each of the inner ends of the pair of rotating rings 16b for the connecting means, and a portion inside the outer flange 16c at the inner end has a semicircular shape. The engaging portion 16d is formed. A semicircular printing plate retainer 16e is seated on the outer peripheral surface of the semicircular engaging portion 16d, and the printing plate retainer 16e is detachably attached to the inner end surface of the outer flange 16c using, for example, a fixing screw. It is fixed to.

The cylindrical screen printing plate 20 is a cylindrical printing plate 2 having a printing hole 20a of a desired shape formed in the peripheral wall.
0b and a screen covering the entire outer peripheral surface of the cylindrical plate 20b. In this embodiment, a plurality of printing holes 20a are formed, and
Reference numeral 0a is arranged so as to create a non-perforated area 20c in which no printing hole 20a exists in the circumferential direction between both ends of the cylindrical screen printing plate 20.

At both ends of the cylindrical screen printing plate 20,
A connected means for concentrically and detachably connecting both ends of the cylindrical screen printing plate 20 to the connecting means at the inner ends of the pair of rotating rings 16b of the printing plate support structure 16 is connected. In this embodiment, the connected means is:
An annular connected member 22 is detachably and concentrically mounted on each of both ends of the cylindrical screen printing plate 20. The connected member 22 includes an outer flange 22a and a cylindrical screen printing plate 20 on one side of the outer flange 22a.
An annular fitting ring 22b fitted to one of the inner peripheral surfaces of both ends, and a semicircular engaging portion 22c concentrically arranged on the other side of the outer flange 22a. I have. The semicircular engaging portion 22c has the same radial dimension as the semicircular engaging portion 16d of the connecting means at the inner ends of the pair of rotating rings 16b of the printing plate support structure 16.

Then, the cylindrical screen printing plate 20 is supported by the printing plate support structure 16, that is, the cylindrical screen printing plate 20 is connected to the connecting means at the inner ends of the pair of rotating rings 16b of the printing plate support structure 16. The concentrically detachable connection of the connected means at both ends of the device is performed as follows.

First, the cylindrical screen printing plate 20
The semi-circular engaging portions 22c of the connected members 22 at both ends of the pair are aligned radially with the semi-circular engaging portions 16d of the inner ends of the pair of rotating rings 16b of the printing plate support structure 16, Next, the semicircular printing plate holder 16e is seated on the semicircular engaging portions 22c of the connected members 22 at both ends of the cylindrical screen printing plate 20, and finally, the printing plate holder 16e.
e is detachably fixed to the inner end surface of the outer flange 16c using, for example, a fixing screw or the like.

As described above, the cylindrical screen printing plate 20 concentrically supported by the pair of rotating rings 16b of the printing plate support structure 16 is indicated by a solid line in FIG. 2 and a two-dot chain line in FIG. 3, and a cylindrical screen printing plate 20 separated from a pair of rotating rings 16b of the printing plate support structure 16 is drawn by a solid line in FIG.

While the printing plate support structure 16 supports the cylindrical screen printing plate 20, the internal space of the cylindrical screen printing plate 20 is formed by a central hole of a pair of rotating rings 16 b of the printing plate support structure 16. It is open to the external space through. A squeegee 24 extending along the entire length of the cylindrical screen printing plate 20 along the longitudinal direction of the cylindrical screen printing plate 20 is arranged in the internal space of the cylindrical screen printing plate 20. .

The squeegee 24 is in contact with the inner peripheral surface of the cylindrical screen printing plate 20, and the internal space of the cylindrical screen printing plate 20 passes through the center holes of the pair of rotating rings 16b of the printing plate support structure 16. And is supported by a squeegee support 26 that extends to the end. Squeegee support 26
The two ends of the printing plate support structure 16 that protrude outside from the center holes of the pair of rotating rings 16 b are detachably supported by a pair of columns 28 fixed to the support base 14.

While the printing plate support structure 16 supports the cylindrical screen printing plate 20, the internal space of the cylindrical screen printing plate 20 is further provided with the cylindrical screen printing plate 2.
The viscous material supply pipe 30a of the viscous material supply means 30 for supplying the viscous material from the outside to the internal space is disposed. The on-off valve (not shown) is naturally attached to the viscous material supply pipe 30a.

In this embodiment, the viscous material supply pipe 30a is supported by the squeegee support 26 in the center hole and the internal space, and the cylindrical screen printing plate 20 rotates the printing plate in the internal space. The viscous material is discharged downstream of the squeegee 24 in the direction rotated by the driving means 18 (indicated by the arrow A in FIG. 3B), thereby creating a viscous material pool 30b. Further, in this embodiment, the viscous substance supply means 30 includes a viscous substance storage container (not shown) outside the above,
The viscous material is supplied from the viscous material storage container into the internal space through the viscous material supply pipe 30 using, for example, a gravity or a pressure pump.

The viscous material may be a viscous material of any material that has been used for printing in a conventional screen printer.
For example, it includes ink and cosmetics.

In this embodiment, the printing plate rotation driving means 18 includes an electric motor 18a as a rotation driving source fixed to the support table 14, and a rotating force from the electric motor 18a. Pair of rotating rings 16b
And a rotation transmission mechanism for transmitting the rotation to the cylindrical screen printing plate 20 via the pair of rotation rings 16b.

The rotational force transmitting mechanism is a printing plate support structure 16.
A pair of support arms 18 fixed to the pair of rotary support members 16a and extending in the front-rear direction along the vertical member 10 of the support base 14.
b. At the front end and the rear end of the pair of support arms 18b, the rotation center lines of the pair of rotary support members 16a of the cylindrical screen printing plate 20 and the printing plate support structure 16 along the horizontal member 12 of the support base 14. Are supported in parallel with each other, and a pair of rotation center shafts 18c and 18d are supported.
Pulleys 18e are rotatably supported at both ends of c and 18d.

The outer ends of the pair of rotary rings 16b of the printing plate support structure 16 located outside the pair of rotary support members 16a are formed to function as pulleys 18f. A pair of pulleys 18f at the outer ends of the pair of rotating rings 16b and a pair of pulleys 18e corresponding to the pulleys 18e
And a power transmission member 18g is stretched between them. In this embodiment, the power transmission member 18g is a toothed belt. For this reason, the pulley 18f at each outer end of the pair of rotating rings 16b and the corresponding pair of front and rear pulleys 18e are also toothed belts. Is a toothed pulley that meshes with the teeth.

The electric motor 18a as a rotation driving source of the printing plate rotation driving means 18 inputs a rotation force to a rotation force transmission mechanism by a known rotation force transmission means 18h. The means 18h includes, for example, a sprocket fixed to the output shaft of the electric motor 18a, a sprocket fixed concentrically to one pulley 18e in the torque transmitting mechanism, and a chain wrapped around these sprockets. , It consists of.

Immediately below the cylindrical screen printing plate 20 supported by the printing plate support structure 16 as described above, an impression cylinder 32 is disposed very close to the outer peripheral surface of the cylindrical screen printing plate 20. The impression cylinder 32 has a pair of rotation support members of the printing plate support structure 16 such that the rotation center line is parallel to the rotation center line of the cylindrical screen printing plate 20 and is oriented in the same direction as the rotation center line. 16a rotatably supported.

The impression cylinder 32 is provided with the cylindrical screen printing plate 20.
Is rotated in a predetermined direction at a desired speed by the printing plate rotation driving means 18, the rotation speed of the printing plate rotation driving device 18 is the same as that of the outer peripheral surface of the cylindrical screen printing plate 20 in the direction opposite to the cylindrical screen printing plate 20. The outer peripheral surface is rotationally driven by the rotational driving means so as to move. In this embodiment, the impression cylinder 32
Is rotated by the rotation force transmitted from the printing plate rotation driving means 18 as described above. More specifically, a pair of rotation center axes 1 of the printing plate rotation drive unit 18 will be described.
Sprocket 1 fixed to one of 8c and 18d
A rotating force is transmitted from the printing plate rotation driving means 18 to the impression cylinder 32 by a chain 18j wound around the 8i and a sprocket 32a fixed to the rotation center axis of the impression cylinder 32.

The support 14 further comprises a printing medium supply means for supplying a printing medium 34 between the cylindrical screen printing plate 20 and the impression cylinder 32 supported by the printing plate support structure 16 as described above. 36 are provided. The printing medium 34 can be made of any material, such as paper, metal foil, plastic, cloth, or the like, in a sheet shape or a web shape conventionally used in a screen printing machine.

In this embodiment, the printing medium 34 has a web shape wound in a roll, and the center of the roll of the printing medium 34 has a rotation center axis 36a.
Is detachably inserted. And the rotation center axis 36
a pair of columns 3 whose both ends are supported by the support base 14
8 rotatably supported. The printing medium 34 extracted from the roll is guided between the cylindrical screen printing plate 20 supported by the printing plate support structure 16 as described above and the impression cylinder 32 by a known guide means such as a guide roller 40. Then, as the cylindrical screen printing plate 20 and the impression cylinder 32 rotate at the same peripheral speed in directions opposite to each other as described above, the printing medium supply means 36 is discharged to the opposite side. At this time, the rotation directions of the cylindrical screen printing plate 20 and the impression cylinder 32 are indicated by arrows A and B, and the traveling direction of the printing medium 34 is indicated by an arrow C.

In this manner, while the printing medium 34 passes between the cylindrical screen printing plate 20 and the impression cylinder 32, the impression cylinder 32 holds the printing medium 34 on one of the outer peripheral surfaces of the cylindrical screen printing plate 20. The viscous material in the cylindrical screen printing plate 20 functions as a pressing member that presses toward the portion.
And is transferred from the plurality of printing holes 20a in the peripheral wall of the cylindrical screen printing plate 20 onto the printing medium 34, and a pattern having the same shape and size as the printing holes is continuously formed on the printing medium 34, that is, Print. As a result, screen printing can be performed at a much higher speed than the above-described conventional flat screen printing machine.

In this embodiment, most of the viscous material inside the cylindrical screen printing plate 20 is surrounded by the cylindrical screen printing plate 20, so that the solvent hardly volatilizes, and it takes a long time. In printing, the quality of the viscous material, and further, the quality of the printed material having a desired shape printed on the printing medium 34 using the viscous material can be easily maintained constant.

The viscous material in the viscous material pool 30b inside the cylindrical screen printing plate 20 is rotated in the same direction as the rotation direction A of the cylindrical screen printing plate 20 by the rotation of the cylindrical screen printing plate 20. Rotational force is applied, and as a result, as shown by arrow D in FIG. 3 (B), it is constantly stirred and the quality can be kept constant, and it is always collected on squeegee 24 inside cylindrical screen printing plate 20. As a result, the squeegee always applies the viscous material at substantially the same pressure to the printing holes 20 of the cylindrical screen printing plate 20.
a, the quality of the printed matter of the desired shape printed on the printing medium 34 can be kept constant.

To maintain the quality of the printed matter constant, the viscous material is always supplied to the inside of the cylindrical screen printing plate 20 through at least one of both open ends in a predetermined amount (preferably, the printing quality). For cylindrical screen printing plate 20
Of the viscous material applied per unit time to the print substrate 34 through the printing holes 20a of the same amount per unit time).

The viscous material supplied into the cylindrical screen printing plate 20 which is rotated at substantially the same speed in the same direction with respect to the printing substrate 34 undulates greatly during the rotation of the cylindrical screen printing plate 20. As a result, the viscous material inside the cylindrical screen printing plate 20 scatters to the outside of the cylindrical screen printing plate 20 during the rotation of the cylindrical screen printing plate 20, and the viscous material inside the cylindrical screen printing plate 20 moves around the rotary screen printing machine. There is no stain.

The viscous material supply means 30 viscously flows from the outside of the cylindrical screen printing plate 20 to the internal space of the cylindrical screen printing plate 20 through at least one of both open ends of the cylindrical screen printing plate 20. Supplies things,
The main components of the viscous material supply means 30, such as a viscous material storage container and a pressure pump, can be installed outside the cylindrical screen printing plate 20. As a result, the viscous material supply means 30 does not hinder the replacement of the cylindrical screen printing plate 20 and the maintenance and inspection of itself is performed by the cylindrical screen printing plate 2.
It can be easily performed without being disturbed by zero.

Further, the squeegee 24 is mounted on the squeegee support 2.
6 is supported in the internal space of the cylindrical screen printing plate 20 through at least one of the open ends of the cylindrical screen printing plate 20. Can be installed outside the screen printing plate 20. Therefore, the squeegee support 26 is used for the cylindrical screen printing plate 2.
It does not hinder the replacement of zero, and the maintenance and inspection of itself can be easily performed without being hindered by the cylindrical screen printing plate 20.

FIG. 3C shows a partition member extending annularly in the circumferential direction along a plurality of non-perforated areas 20c shown in FIG. 3A inside the cylindrical screen printing plate 20. A variant with 42 is shown. Partition member 4
2, the inside of the cylindrical screen printing plate 20 is divided into a plurality of portions between both ends, so that a plurality of mutually different types of viscous materials are viscous inside the plurality of divided cylindrical screen printing plates 20. The different kinds of viscous substance pools 44a, 44b, supplied by the substance supply means 30 and independently of each other.
44c can be held. Therefore, a plurality of mutually different types of viscous materials can be simultaneously printed on the same printing material 34 by one cylindrical screen printing plate 20.

The number of non-porous regions 20c may be only one, or two or more. If the partition member 42 is not used, the non-porous area 20c may not be provided.

The number of the partition members 42 is set to the non-porous area 20c.
And may be less than the number of non-porous regions 20c.

When the inside of the cylindrical screen printing plate 20 is divided into a plurality of parts between both ends by the partition member 42, the viscous material supply means 30 is provided inside the cylindrical screen printing plate 20 divided into a plurality. The same kind of viscous material or a different kind of viscous material is supplied to each of the plurality of portions, for example, the viscous material supply pipe 30a corresponding to the number of sections.
The number of the different types may be the same as the number of the plurality of parts, or may be a number smaller than the number of the plurality of parts.

When the partition member 42 is used, the squeegee 32 is further provided in each of a plurality of sections inside the cylindrical screen printing plate 20 divided by the partition member 42.
a, 32b and 32c need to be arranged.

[0061]

As is clear from the above description,
ADVANTAGE OF THE INVENTION According to the rotary screen printer according to the present invention, the printing speed can be easily improved, and printing can be performed with uniform quality over a long period of time. It is easy to maintain the quality of a printed matter of a desired shape printed on a printed body at a constant level.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a rotary screen printer according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of the rotary screen printer of FIG.

FIG. 3A is a plan view schematically showing a state in which a cylindrical screen printing plate is detached from a printing plate support structure in the rotary screen printing machine of FIG. 1;
FIG. 1 is a side view schematically showing a detached cylindrical screen printing plate of (A) and a fixing half ring used for detachably fixing the cylindrical screen printing plate to the printing plate support structure of (A). Yes; and (C) shows that in the rotary screen printing press according to one embodiment of the present invention, the internal space of the cylindrical screen printing plate is partitioned into a plurality of sections by a plurality of annular partition members. It is a longitudinal cross-sectional view schematically showing a state.

[Explanation of symbols]

 Reference Signs List 16 printing plate support structure 18 printing plate rotation driving means 20 cylindrical screen printing plate 20a printing hole 20c non-perforated area 24 squeegee 26 squeegee support 30 viscous material supply means 32 impression cylinder (pressing member) 34 printing object 36 covered Printed material supply means 42 Partition member

Claims (6)

[Claims] 1. A printing plate support structure rotatably supported with both ends of a cylindrical screen printing plate open; and a printing plate rotation drive for rotating the cylindrical screen printing plate by driving the printing plate support structure. Means for printing on a rotary screen. 2. A viscous material supply for supplying a viscous material from the outside of the cylindrical screen printing plate to the internal space of the cylindrical screen printing plate via at least one of both open ends of the cylindrical screen printing plate. 2. The rotary screen printing machine according to claim 1, further comprising means. 3. A squeegee support for supporting a squeegee in an internal space of a cylindrical screen printing plate via at least one of both open ends of the cylindrical screen printing plate. Or the rotary screen printer according to claim 2. 4. The cylindrical screen printing plate has a plurality of printing holes and a non-perforated area between the two ends where no printing holes exist in the circumferential direction. The rotary screen printer according to any one of claims 1 to 3. 5. The cylindrical screen printing plate further comprises a partition member extending annularly in the circumferential direction along the non-perforated region inside the cylindrical screen printing plate. 2. The rotary screen printer according to claim 1. 6. A pressing member pressed against a part of a peripheral surface of a cylindrical screen printing plate whose both ends are supported by the printing plate support structure; and a part of a peripheral surface of the cylindrical screen printing plate. 6. The rotary screen printing press according to claim 1, further comprising: a printing medium supply unit configured to supply a printing medium between the pressing member and the pressing member.