JP2016068364A - Rotary screen device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary screen device capable of quickly, accurately and easily moving holding means for holding a support in a vertical direction.SOLUTION: The rotary screen device includes a squeegee attaching/detaching device 110 having a holder 124 capable of holding the end 115a of a support 115 so as to support the support 115 in cantilever, vertical moving means 115, 117 to 121, and 131 to 138 for holding the holder 124 so as to vertically move, and rails 111 to 113 for holding the holder 124 over a distance longer than the horizontal length of the support 115 so as to horizontally move, and the vertical moving means 115, 117 to 121, and 131 to 138 have feed screw mechanisms 120, 121, and 131 to 138 for vertically moving the holder 124, and fluid pressure cylinder mechanisms 115, and 117 to 119 for vertically moving the holder 124.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a rotary screen device.

  2. Description of the Related Art Conventionally, a rotary screen printing machine using a rotary screen device is known as a high-speed printing device for a wide range of materials such as cloth and paper. The rotary screen printer has a printing method in which ink is pushed out from a through-hole formed in a cylindrical plate surface (hereinafter referred to as “rotary screen”) by a squeegee and transferred to a substrate.

  In general, in a rotary screen printing machine, a squeegee made of aluminum having a total length of 2 to 3 m and a weight of 13 to 20 kg including a support is often used. In addition, the squeegee is mounted in the rotary screen by fixing both ends of the squeegee to the squeegee installation portion.

  When mounting the squeegee inside the rotary screen, first, two workers (for example, worker A and worker B) are arranged at both ends of the rotary screen in the axial direction. Next, after worker A grips the end of the squeegee, it is inserted into the rotary screen. Furthermore, after the worker B on the other side holds the other squeegee end portion that has been inserted into the rotary screen, it is fixed to the squeegee installation portion provided on the other side. Finally, the operator A fixes the other end of the squeegee to the other squeegee installation part, thereby completing the squeegee mounting. In addition, when removing a squeegee from the inside of a rotary screen, it has achieved by performing the above-mentioned operation | work in a reverse procedure.

  In such a squeegee mounting / removal operation, the two workers must continue to take a working posture while supporting the weight of the squeegee. There is a possibility of letting you. For this reason, various rotary squeegee attachment / detachment means are conventionally provided in rotary screen printing machines.

  For example, in Patent Document 1 listed below, a pair of plate-like holding tools capable of holding the ends of the support so as to support the support that supports the squeegee, and the holding tool moved in the vertical direction A vertical rail and a movable table that are held so as to be possible, and a horizontal rail and a movable member that are held so as to be movable in the horizontal direction over a distance longer than the horizontal length of the support. A rotary screen printing machine with a squeegee attachment / detachment device is described.

  In the squeegee attaching / detaching device for a rotary screen printing machine described in Patent Document 1, the moving member is moved in the horizontal direction along the horizontal rail, and the moving table is moved in the vertical direction along the vertical rail. By moving the center position between the pair of the holding tools to coincide with the axial center position on the end side of the support, after holding the end of the support with the holding tool, By moving the moving member along the horizontal rail in the horizontal direction, pulling out the support and the squeegee from the rotary screen, and moving the moving table downward along the vertical rail, The support body and the squeegee can be placed on a carriage.

JP 2010-194988 A JP 11-188852 A JP 2000-127351 A

  However, in the squeegee attaching / detaching device of the rotary screen printing machine described in the above-mentioned Patent Document 1, the holding means such as the clamping tool is moved in the vertical direction via the moving table by the screw shaft. Therefore, it is difficult to quickly move the holding means in the vertical direction. Therefore, instead of the screw shaft, for example, a rodless cylinder may be applied to move the holding means in the vertical direction via a moving element of the rodless cylinder. It becomes difficult to move to an accurate position in the direction.

  In view of the above, an object of the present invention is to provide a rotary screen device that can easily move a holding means for holding a support in a vertical direction quickly and accurately.

  In order to solve the above-mentioned problems, a rotary screen device according to the present invention includes a rotary screen having a through hole, ink supply means for supplying ink into the rotary screen, and a rotary screen device disposed in the rotary screen. In the rotary screen device comprising: a squeegee that pushes the ink supplied by the ink supply means into the through hole of the rotary screen and scrapes off excess ink; and a support that supports the squeegee. A holding means capable of holding the end of the support so as to support the body in a cantilevered manner, a vertical movement means for holding the holding means so as to be movable in the vertical direction, and a horizontal direction of the support. A horizontal direction for holding the holding means so as to be movable in the horizontal direction over a distance longer than the length. A squeegee attaching / detaching means having a moving means, wherein the vertically moving means of the squeegee attaching / detaching means moves the holding means vertically, and a fluid pressure cylinder mechanism moves the holding means vertically. It is characterized by having.

  The rotary screen device according to the present invention is characterized in that in the above-described rotary screen device, there is provided a turning means for holding the holding means so as to be turnable around a vertical axis.

  In the rotary screen device according to the present invention, in the above rotary screen device, the fluid pressure cylinder mechanism supports the feed screw mechanism, and the feed screw mechanism supports the holding means. Features.

  In the rotary screen device according to the present invention, the holding means of the squeegee attaching / detaching means can be moved up and down by the feed screw mechanism, and can be moved up and down by the fluid pressure cylinder mechanism. The holding means can be easily moved up and down quickly and accurately.

It is a schematic block diagram of the principal part of the printing part of 1st embodiment at the time of applying the rotary screen apparatus which concerns on this invention to a rotary screen printing machine. It is a schematic block diagram of the squeegee attachment / detachment apparatus of 1st embodiment. It is an extraction enlarged view of the arrow III part of FIG. FIG. 4 is a sectional view taken along line IV-IV in FIG. 3. It is the VV sectional view taken on the line of FIG. It is a schematic block diagram of the worm gear part of FIG. It is an extraction enlarged view of the arrow VII part of FIG. FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7. It is action | operation explanatory drawing of the squeegee attachment / detachment apparatus of FIG. FIG. 10 is an operation explanatory diagram following FIG. 9. FIG. 11 is an operation explanatory diagram following FIG. 10.

  Embodiments of a rotary screen device according to the present invention will be described below with reference to the drawings. However, the present invention is not limited to the following embodiments described with reference to the drawings.

<Main embodiment>
A main embodiment when the rotary screen device according to the present invention is applied to a rotary screen printer will be described with reference to FIGS.

  The rotary screen printing machine includes a printing unit 100 that is a rotary screen device as shown in FIG. 1, and also includes a paper feeding unit that is a supply unit (not shown), a paper discharge unit that is a discharge unit, and the like. The paper feed unit includes a paper feed unit and a stacking unit. The paper feeding means supplies the printing material 1 from the stacking means to the printing unit 100. The stacking means stacks the sheet-like substrate 1. The substrate 1 placed on the stacking unit is fed one by one by the supply unit and then conveyed to the printing unit 100.

  The printing unit 100 includes, as a basic configuration, a main body frame 100A, a pressure drum 101 that is a support drum that supports the substrate 1, a rotary screen 102, a rotating body (not shown), an ink supply nozzle 103, a squeegee 104, and a support body 105. , A mounting body 106, a fixture 107, and the like. As shown in FIG. 2, the impression cylinder 101 is rotatably supported by the main body frame 100A, and is driven to rotate clockwise in FIG. 1 during printing. The rotary screen 102 is disposed so as to face the impression cylinder 101 through the substrate 1 and is rotatably supported by the main body frame 100A (not shown). It is designed to rotate around.

  The impression cylinder 101 is applied with a printing pressure by the squeegee 104 via the rotary screen 102 to the printed material 1 supported on the peripheral surface thereof, whereby an image line portion such as a pattern is formed on the printed material 1. 3 can be transferred. The rotary screen 102 has a hollow cylindrical shape with a through hole (not shown) through which the ink 2 is passed, and is supported rotatably by connecting the end of the cylinder to the rotating body. By arranging the nozzle 103, the squeegee 104, and the support body 105 in the hollow interior, the image line portion 3 such as a pattern can be formed on the substrate 1 to be printed.

  One or more of the ink supply nozzles 103 are installed downward in the rotary screen 102 by the support 105 (preferably, a plurality of ink supply nozzles 103 are arranged along the axial direction of the rotary screen 102), and a pump or the like (not shown) is used. Are connected to an ink tank (not shown), and the ink 2 sucked up from the ink tank can be discharged into the rotary screen 102 and supplied. In the present embodiment, the ink supply nozzle 103, the pump, the ink tank, and the like constitute ink supply means.

  The squeegee 104 is made of rubber or metal and has a cross-sectional shape of a rectangle, a square, or a sword shape corresponding to the shape of the substrate 1 so that the tip abuts against the inner peripheral surface of the rotary screen 102. By being fixedly installed upward (or downward) by the support 105, the ink 2 is pushed into the through-hole of the rotary screen 102 and the excess ink 2 adhering to the inner peripheral surface of the rotary screen 102 is scraped off. Can be taken.

  When the squeegee 104 is attached to and detached from the rotary screen 102, the support 105 needs to be supported at its end portions 105a and 105b. Is longer than the length of the rotary screen 102 and the length of the rotary screen 102 in the axial direction.

  As shown in FIG. 2, the attachment body 106 is fixedly supported by the main body frame 100A, and the support body 105 is placed in the rotary screen 102 so as to support the end portions 105a and 105b of the support body 105, respectively. Accordingly, the ink supply nozzle 103 and the squeegee 104 can be fixedly held. The fixing tool 107 detachably supports the support body 105 with respect to the mounting body 106 so that the end portions 105a and 105b on both sides of the support body 105 and the mounting body 106 can be respectively fixed. Be able to.

  The fixing tool 107 is, for example, a screw that is screwed into the end portions 105 a and 105 b of the support body 105 and fastens the end portions 105 a and 105 b and the attachment body 106, or the support body 105. It is preferable to have a structure that can be easily attached and detached, such as a fitting member that fixes the end portions 105a and 105b to the mounting body 106 by being fitted to the end portions 105a and 105b.

  The printing unit 100 that is the rotary screen device according to the present embodiment further includes a squeegee attaching / detaching device 110 that is a squeegee attaching / detaching unit having the following structure.

  As shown in FIG. 2, a fixed rail 111 longer than the axial length of the rotary screen 102 extends along the axial direction of the rotary screen 102 above the attachment position of the support body 105 of the main body frame 100 </ b> A. So that the longitudinal direction is directed. An intermediate rail 112 having a length that is approximately half the length of the fixed rail 111 in the longitudinal direction is attached to the fixed rail 111 so as to be slidable along the longitudinal direction of the fixed rail 111. A movable rail 113 having a slightly longer length than the intermediate rail 112 is attached to the intermediate rail 112 so as to be slidable along the longitudinal direction of the intermediate rail 112.

  That is, when the intermediate rail 112 and the movable rail 113 are slid with respect to the fixed rail 111 in a direction to approach the rotary screen 102, the intermediate rail 112 and the movable rail 113 are overlapped with the fixed rail 111. 9 (see FIG. 9), when the slide is moved away from the rotary screen 102, the intermediate rail 112 is pulled out from the fixed rail 111 and the movable rail 113 is further extended from the intermediate rail 112. The length of the rails 112 and 113 in the longitudinal direction can be made longer than the length of the support 105 in the axial direction and the length of the squeegee 104 in the longitudinal direction. (See FIG. 2).

  The upper end side of a support block 114 having a shaft portion (not shown) with the axial direction directed in the vertical direction on the lower end side is connected and fixed to the lower surface on the distal end side of the movable rail 113. A support bracket (not shown) is pivotally supported by the shaft portion of the support block 114 so as to be rotatable. The upper end side of the vertical rail 115 whose longitudinal direction is directed in the vertical direction is connected and fixed to the support bracket. A caster 116 is rotatably provided at the lower end of the vertical rail 115.

  That is, the vertical rail 115 is movably supported on the floor surface F via the casters 116 and can move along the axial direction of the rotary screen 102 as the rails 112 and 113 slide. At the same time, the support block 114 can be turned around the axis, ie, around the vertical axis.

  Brackets 117 protrude from the upper and lower sides of the front surface of the vertical rail 115, respectively. Between these brackets 117, a rodless cylinder 118, which is a fluid pressure cylinder oriented in the axial direction along the longitudinal direction of the vertical rail 115, that is, directed in the vertical direction, is attached. The rodless cylinder 118 is capable of reciprocating a block type moving element 118a along the axial direction. A support table 119 is attached to the front surface of the moving element 118 a of the rodless cylinder 118.

  As shown in FIGS. 2 to 4, a pair of guide rails 120 having a longitudinal direction in the vertical direction are attached to the front surface of the support table 119 so as to form a pair in the horizontal direction. The guide rail 120 is provided with a slide block 121 that is slidable along the longitudinal direction of the guide rail 120.

  As shown in FIGS. 2, 3, and 5, between the pair of guide rails 120 on the front surface of the support table 119, a screw shaft 132 having an axial direction directed in the vertical direction is disposed. The upper and lower ends of the screw shaft 132 are rotatably supported via a pair of support members 131 attached to the front surface of the support table 119.

  A female screw block 133 is screwed between the pair of support members 131 of the screw shaft 132. The lower end of the screw shaft 132 protrudes from the support member 131. A worm wheel 134 is coaxially attached to the lower end of the screw shaft 132 protruding from the support member 131.

  As shown in FIGS. 3, 5, and 6, a worm 135 is engaged with the worm wheel 134, and the worm 135 is connected to a support bracket 136 attached to the support table 119 at one end (upper side in FIG. 6). ) Is rotatably supported, and is coaxially attached to a rotating shaft 137 that is rotatably supported on the support table 119 at the other end (lower side in FIG. 6).

  One end side (the upper side in FIG. 6) of the rotating shaft 137 protrudes from the support bracket 136. A steering wheel 138 that rotates the rotary shaft 137 is coaxially attached to one end side (the upper side in FIG. 6) of the rotary shaft 137 protruding from the support bracket 136.

  That is, when the steering wheel 138 is rotated, the worm 135 and the worm wheel 134 are rotated via the rotation shaft 137, and the screw shaft 132 is rotated, so that the female screw block 133 is moved to the screw shaft 132. It can be moved up and down along the axial direction.

  As shown in FIGS. 3 and 6, the support bracket 136 is screwed with a distal end side of a set screw 139 having a handle attached to the base end, and presses the distal end of the set screw 139 against the rotating shaft 137. Thus, by rotating the set screw 139 relative to the support bracket 136, the rotation of the rotary shaft 137 can be restricted and stopped.

  As shown in FIGS. 2 to 5, in the slide block 121 and the female screw block 133 that form a pair, one end in the longitudinal direction of a support plate 122 that has a substantially rectangular shape along the horizontal direction is directed to the slide. The block 121 and the female screw block 133 are attached so as to be integrally connected.

  That is, the support plate 122 can move in the vertical direction along the longitudinal direction of the guide rail 120 via the slide block 121 as the female screw block 133 moves up and down due to the rotation of the steering wheel 138. It can be done.

  As shown in FIGS. 2, 7, and 8, a support shaft 123 that protrudes in the horizontal direction perpendicular to the longitudinal direction of the support plate 122 is projected from the other longitudinal end of the support plate 122. Yes. The support shaft 123 rotatably supports the proximal end side (left side in FIG. 7) of the holder 124 in which the holding groove 124a is formed on the distal end side (right side in FIG. 7).

  The holding groove 124a of the holder 124 has a notch 124b on the surface (the left surface in FIG. 8) opposite to the surface (the right surface in FIG. 8) facing the support plate 122. In addition, the cross-sectional shape in the vertical direction is substantially U-shaped (see FIG. 8), and has a communication port 124c that communicates with the outside on the distal end surface side (right end surface side in FIG. 7).

  The holding groove 124a of the holder 124 has a vertical cross-sectional size larger than a radial cross-sectional size of the shaft end of the support 105, and a front end side (in FIG. On the upper side of the notch 124b on the right side, a locking projection 124d with its tip directed downward is projected so as to protrude inward of the notch 124b.

  A holding screw 125 that is axially oriented in the vertical direction is screwed to the lower portion near the tip of the holder 124 so that the tip (upper side in FIGS. 7 and 8) protrudes into the holding groove 124a. . An engagement member 125a that engages with an engagement groove 105aa formed at a predetermined position of the end portion 105a of the support 105 is provided at the tip of the holding screw 125 (upper side in FIGS. 7 and 8). Yes.

  An axial direction in the same direction as the axial direction of the support shaft 123 is on the upper side of the holder 124 near the tip (right side in FIG. 7) of the surface on the notch 124b side (left side in FIG. 8). A support pin 126 is provided so as to project. A base end side (upper side in FIGS. 7 and 8) of a stop plate 127 that bridges between the upper side and the lower side of the notch 124b is rotatably supported and supported by the support pin 126.

  Below the tip (left side in FIG. 7) of the surface of the holder 124 on the side of the notch 124b (left side in FIG. 8), the tip of a set screw 128 having a handle attached to the base end. The side is screwed so that the axial direction is directed in the same direction as the axial direction of the support shaft 123. An insertion groove 127a into which the set screw 128 is detachably inserted is formed near the tip of the stop plate 127 (lower side in FIGS. 7 and 8).

  That is, when the set screw 128 is tightened by rotating the set plate 127 around the support pin 126 so that the insertion groove 127a of the set plate 127 is inserted into the set screw 128, the set screw 128 is tightened. However, by sandwiching the stopper plate 127 between the handle and the holder 124, the stopper plate 127 bridges the upper side and the lower side of the notch 124 b of the holder 124. The notch 124b can be closed by fixing and holding the stop plate 127, and the support pin 126 can be removed so as to remove the insertion groove 127a of the stop plate 127 from the set screw 128 by loosening the set screw 128. The notch 124b can be completely opened by rotating the stopper plate 127 around the center. A.

  As shown in FIG. 7, the support plate 122 has regulation pins 129 a and 129 b that define a rotation range of the holder 124 around the support shaft 123 so that they can abut on the end surface of the holder 124. It is attached. A support stand 130 for supporting the support 105 is provided on the support plate 122 on the tip side (right side in FIG. 7) of the communication port 124 c of the holder 14.

  In FIG. 11, reference numeral 10 denotes a work table, which is positioned in the vicinity of the vertical rail 115 when the intermediate rail 112 is pulled out from the fixed rail 111 and the movable rail 113 is further pulled out from the intermediate rail 112. And is oriented so that its longitudinal direction is directed in a horizontal direction perpendicular to the axial direction of the rotary screen 102.

  In this embodiment, the vertical rail 115, the bracket 117, the rodless cylinder 118, the support table 119 and the like constitute a fluid pressure cylinder mechanism, and the guide rail 120, the slide block 121, and the support The member 131, the screw shaft 132, the female screw block 133, the worm wheel 134, the worm 135, the support bracket 136, the rotating shaft 137, the steering wheel 138, and the like constitute a feed screw mechanism, and the fluid pressure cylinder mechanism The feed screw mechanism or the like constitutes a vertically moving means, the support block 114, the caster 116 or the like constitutes a turning means, and the fixed rail 111, the intermediate rail 112, the movable rail 113 or the like horizontally moves. Comprising means, said A pressing means is constituted by the even screw 125, etc., and an opening / closing means is constituted by the support pin 126, the stop plate 127, the set screw 128, etc., and the support plate 122, the support shaft 123, the holder 124, the pressing means. The holding means is constituted by the opening / closing means and the like.

  In the rotary screen printing machine according to the present embodiment having the printing unit 100 having such a squeegee attaching / detaching device 110, the substrate 1 is fed one by one from the paper feeding unit and conveyed to the printing unit 100. (In the direction of the arrow in FIG. 1). Then, the ink 2 is supplied into the rotary screen 102 from the ink supply nozzle 103 and moves in the direction in which the squeegee 104 is located with the rotation of the rotary screen 102 while being in contact with the rotary screen 102. While being pushed into the through-hole of the rotary screen 102, the surplus portion is scraped off. The pressed ink 2 is transferred to the substrate 1 as the impression cylinder 101 and the rotary screen 102 rotate to form the image line portion 3. The substrate 1 on which the image line unit 3 is formed is discharged from the paper discharge unit.

  The case where the squeegee 104 is taken out from the rotary screen 102 by using the squeegee attaching / detaching device 110 after maintenance of such screen printing will be described next.

  In the rotary screen printing machine, the vertical rail 115 is arranged at the end of the support 105 so that the intermediate rail 112 and the movable rail 113 are placed on the fixed rail 111 and stored during the printing operation. A state in which the support block 114 is turned around a vertical axis centered on the shaft portion so that the front surface of the support block 105 faces the end portion 105a of the support body 105. It has become.

  From this state, the rodless cylinder 118 is operated so that the holding groove 124a of the holder 124 is positioned at a specified position that is the same as the height position of the end portion 105a of the support 105, and the moving element is moved. By moving the holder 118a up and down, the holder 124 is moved quickly through the support plate 122 so as to be substantially positioned at the specified position, and then the set screw 139 is loosened and the steering wheel 138 is rotated to By moving the female screw block 133 in the vertical direction, the holder 124 is finely adjusted via the support plate 122 so as to be accurately positioned at the specified position, and the set screw 139 is tightened.

  Then, the set screw 128 is loosened so as to open the notch 124b of the holder 124, and the support pin 126 is centered so as to remove the insertion groove 127a of the set plate 127 from the set screw 128. After the stop plate 127 is rotated, the vertical rail 115 is vertically moved around the shaft portion of the support block 114 so that the longitudinal direction of the support plate 122 is aligned with the axial direction of the support body 105. When turning around the axis, the holder 124 also turns and the support body 105 is arranged so that the notch 124b of the holder 124 faces the peripheral surface of the end portion 105a of the support body 105. The end portion 105a approaches from the radial direction.

  When the holder 124 is pressed against the end portion 105a of the support 105, the holder 124 swings around the support shaft 123 so that the tip end side is lifted (in FIG. 7). , The position of the two-dot chain line), after the end portion 105a of the support member 105 has entered the holding groove 124a in the radial direction from the cutout opening 124b of the holder 124, the holder 124 has its own weight on the tip side. While swinging around the support shaft 123 so as to be dropped (indicated by the solid line in FIG. 7), the end 105a of the support 105 is placed on the support 130.

  Thereby, the inner surface of the locking projection 124d of the holder 124 is connected to the end portion 105a of the support body 105 so that the locking projection 124d of the holder 124 is engaged with the end portion 105a of the support body 105. Since it abuts on the peripheral surface, the support body 105 is prevented from falling off the notch 124 b of the holder 124 and is supported by the support stand 130.

  Subsequently, the set screw 128 is tightened by rotating the set plate 127 around the support pin 126 so that the insertion groove 127a of the set plate 127 is inserted into the set screw 128. The stopper plate 127 is fixed and held so as to bridge between the upper side and the lower side of the notch 124b to close the notch 124b, and the engaging member 125a of the presser screw 125 is attached to the support 105. The holding screw 125 is tightened so as to engage with the engagement groove 105aa (see FIG. 9).

  As a result, the shaft portion 105a of the support 105 is fixedly held in the holding groove 124a of the holder 124 by pressing the upper portion of the peripheral surface against the inner surface of the holding groove 124a of the holder 124. At the same time, the stopper plate 127 reliably prevents the notch 124b from falling off.

  Then, by removing the fixture 107 from the support 105 and releasing the support 105 from the mounting body 106, the support 105 is cantilevered by the holder 124, and then the tip of the squeegee 104. The rodless cylinder 118 is operated so as to be separated from the inner peripheral surface of the rotary screen 102 and the height of the support 105 is slightly lowered, and then the intermediate rail 112 and the movable rail are moved from the fixed rail 111. When the vertical rail 116 is slid and moved away from the rotary screen 102 so as to pull out 113, the support 105 moves over a distance longer than the length in the horizontal direction, and along the axial direction of the rotary screen 102. From the inside of the rotary screen 102 Since the withdrawn whole, the squeegee 104 is completely withdrawn without damaging the inner circumferential surface of the rotary screen 102 from the interior of the rotary screen 102 (see FIG. 10).

  When the squeegee 104 and the support body 105 are extracted from the inside of the rotary screen 102 in this way, the support block 114 is oriented so that the front surface of the vertical rail 115 faces the end portion 105a of the support body 105. The squeegee 104 and the support body 105 are turned and moved so as to be positioned above the work table 10 by turning the vertical rail 115 about the vertical axis around the shaft portion.

  Subsequently, the rodless cylinder 118 is operated to move the mover 118a downward so that the squeegee 104 and the support body 105 are placed on the work table 10, and thereby the support plate 122 and the support body 105 are moved downward. After quickly moving the support body 105 and the squeegee 104 to a position slightly above the work table 10 via the holder 124, the set screw 139 is loosened and the steering wheel 138 is rotated. By moving the female screw block 133 downward, the support body 105 and the squeegee 104 are moved downward so as to be slowly placed on the work table 10 via the support plate 122 and the holder 124 (FIG. 11).

  When the squeegee 104 and the support body 105 are placed on the work table 10 in this manner, the set screw 128 is loosened and the insertion groove 127a of the set plate 127 is removed from the set screw 128. The stopper plate 127 is rotated about the support pin 126 to open the notch 124b of the holder 124, and the cap screw 125 is loosened to support the engagement member 125a of the cap screw 125. The body 105 is separated from the engagement groove 105aa.

  Subsequently, the holder 124 is swung around the support shaft 123 so that the locking protrusion 124d of the holder 124 is separated from the peripheral surface of the end portion 105a of the support body 105. With the front end side moved upward, the front surface of the vertical rail 115 is directed in a direction to face the end portion 105a of the support body 105, that is, the notch 124b of the holder 124 is set to the support body. The holder 124 is turned by turning the vertical rail 115 around the vertical axis around the shaft portion of the support block 114 so as to be separated from the end portion 105a of the support member 105 in the radial direction. The end portion 105a of the support 105 is moved from the holding groove 124a of the holder 124 through the notch 124b. And out come, disengaging from the holder 124.

  Then, by performing a procedure reverse to the procedure described above, a new squeegee 104 and support 105 that have undergone maintenance and inspection can be attached to the inside of the rotary screen 102.

  That is, in the squeegee attaching / detaching device 110 according to the present embodiment, the holder 124 can be moved up and down quickly and greatly by the rodless cylinder 118, and the holder 124 is moved by the screw shaft 132 and the female screw block 133. It can be finely adjusted by precisely moving it up and down.

  Therefore, according to the present embodiment, it is possible to easily move the holder 124 and the like in the vertical direction quickly and accurately.

  Further, in the squeegee attaching / detaching device 110 according to the present embodiment, the holder 124 is swung around the support shaft 123 while turning the vertical rail 115, so that the inside of the holding groove 124 a of the holder 124 is Since the end 105a of the support 105 can be inserted and held in the radial direction via the notch 124b, the holding groove of the holder 124 with respect to the end 105a of the support 105 124a can be easily aligned, and the end 105a of the support 105 can be easily held by the holder 124. Therefore, when the end 105a of the support 105 is held, Position adjustment of the holder 124 can be easily performed, and the end 105a of the support 105 can be easily It is possible to equity.

  Further, since the locking projection 124d is provided in the notch 124b of the holder 124, it is possible to easily prevent the end portion 105a of the support body 105 from dropping from the notch 124b of the holder 124. Can do.

  In addition, since the stop plate 127 is provided in the notch 124b of the holder 124, the end 105a of the support 105 in the holding groove 124a of the holder 124 is prevented from dropping from the notch 124b. It can be surely prevented.

<Other embodiments>
In the above-described embodiment, the support plate 122 provided with the holder 124 and the like is attached to the female screw block 133 and the female screw block 133 and the like are attached to the moving element 118a of the rodless cylinder 118. By attaching via the support table 119, the holder 124 and the like can be moved up and down accurately and precisely by the feed screw mechanism, and the rodless cylinder 118 can be quickly moved up and down together with the feed screw mechanism. However, as another embodiment, for example, a feed screw mechanism such as the screw shaft 132 and the female screw block 133 is attached to the vertical rail 115, and a support table or the like is attached to the female screw block 133 or the like of the feed screw mechanism. To support the rodless cylinder 118. A bracket 117 is attached, and the support plate 122 provided with the holder 124 and the like is attached to the moving element 118a of the rodless cylinder 118 so that the holder 124 and the like can be moved up and down quickly by the rodless cylinder 118. At the same time, the feed screw mechanism can be moved up and down with the rodless cylinder 118 and the like accurately and finely.

  In the above-described embodiment, the case where the rodless cylinder 118 is applied as a fluid pressure cylinder has been described. However, as another embodiment, for example, a general air cylinder, a hydraulic cylinder, or the like may be applied. Is possible.

  In the above-described embodiment, the case where the present invention is applied to a rotary screen printing machine has been described. However, the present invention is not limited to this, and is described in, for example, Patent Documents 2 and 3 as other embodiments. In addition to the ink supply device, a squeegee that pushes ink into the through hole of the rotary screen and scrapes off excess ink is disposed in the rotary screen, and the squeegee is supported by a support. If there is, the rotary screen device according to the present invention can be applied in the same manner as in the above-described embodiment.

  Since the rotary screen device according to the present invention can easily move the holding means in the vertical direction quickly and accurately, for example, if it is applied to a rotary screen printer, it can be used extremely beneficially in the printing industry. Can do.

F Floor 1 Substrate 2 Ink 3 Image section 10 Worktable 100 Printing section 100A Main body frame 101 Pressure drum 102 Rotary screen 103 Ink supply nozzle 104 Squeegee 105 Support body 105a, 105b End portion 105aa Engaging groove 106 Attachment body 107 Fixation Tool 110 Squeegee attaching / detaching device 111 Fixed rail 112 Intermediate rail 113 Movable rail 114 Support block 115 Vertical rail 116 Caster 117 Bracket 118 Rodless cylinder 118a Moving element 119 Support table 120 Guide rail 121 Slide block 122 Support plate 123 Support shaft 124 Holder 124a Holding Groove 124b Notch 124c Communication port 124d Locking protrusion 125 Holding screw 125a Engaging member 126 Support pin 127 Stop plate 12 a insertion groove 128 setscrew 129a, 129b defines the pin 130 bearing blocks 131 support member 132 threaded shaft 133 female screw block 134 the worm wheel 135 worm 136 support bracket 137 rotating shaft 138 Steering 139 setscrew

Claims (3)

A rotary screen with a through hole;
Ink supply means for supplying ink into the rotary screen;
A squeegee that pushes the ink disposed in the rotary screen and supplied by the ink supply means into the through-hole of the rotary screen and scrapes off excess ink;
A rotary screen device comprising: a support for supporting the squeegee;
Holding means capable of holding an end of the support so that the support is cantilevered;
Vertical movement means for holding the holding means so as to be movable in the vertical direction;
Squeegee attaching / detaching means having horizontal movement means for holding the holding means so as to be movable in a horizontal direction over a distance longer than the horizontal length of the support,
The vertical movement means of the squeegee attaching / detaching means is
A feed screw mechanism for moving the holding means in the vertical direction;
And a fluid pressure cylinder mechanism for moving the holding means in the vertical direction. The rotary screen device according to claim 1,
A rotary screen device comprising a turning means for holding the holding means so as to be turnable about a vertical axis. The rotary screen device according to claim 1 or 2,
The fluid pressure cylinder mechanism supports the feed screw mechanism;
The rotary screen device, wherein the feed screw mechanism supports the holding means.

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