JP2008229942A - Ink supplying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the maintenance of an ink supplying device or, for example, that of a doctor chamber type ink supplying device. <P>SOLUTION: This ink supplying device 1 is equipped with connecting members 5, each of which has a bent part connecting with pressing members 6 and extending to the chamber 71 side of a supporting member 4 and to its opposite side anti-chamber side 72 and bending so as to oppose to the anti-chamber side 72 of the supporting member 4 at the anti-chamber side 72 ends of the supporting member 4, a threaded hole 5a provided at the bent part of the connecting member 5 and a bolt 8 which is screwed on the threaded hole 5a and the tip of which contacts with the side 72 opposite to the chamber of the supporting member 4. By moving the bent part of the connecting member 5 towards the direction separating from the supporting member 4 through the rotation of the bolt 8, the pressing members 6 connected with the connecting member 5 moves to the blade supporting surface sides of the supporting member, resulting in pressingly fixing blades 3 against the blade supporting surfaces 4b of the supporting member 4 by the pressing members 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an ink supply apparatus including an ink supply unit that defines a chamber with a pair of blades and a peripheral surface of an ink supply roll, and supplies ink to the chamber.

  Conventionally, for example, an anilox roll as an ink supply roll that is used in a flexographic printing machine and in which ink is applied to the peripheral surface, and a pair that adjusts the amount of ink by scraping the ink applied to the peripheral surface of the anilox roll. Ink supply apparatus is known which includes: a blade for supporting the two blades; a support plate for supporting both blades; an anilox roll; and an ink supply means for supplying ink to a chamber defined by the two blades and the support plate. (For example, refer to Patent Document 1).

The blade is fixed by fixing the presser plate to the support plate with a bolt and sandwiching the presser plate between the support plate and the presser plate. However, in the conventional type, the bolt tightening position is in the vicinity of the anilox roll. Therefore, when replacing the blade, the bolts and screw holes become clogged with ink as the bolts are tightened or loosened. May not be tightened. If the ink adheres and becomes clogged, it is necessary to clean the bolts and screw holes, and maintenance is troublesome.
Japanese Patent Laid-Open No. 11-254648 (page 3, FIGS. 1 and 2)

  An object of the present invention is to provide an ink supply device that can be easily maintained in view of the above points.

  The present invention is an ink supply roll that is rotatably arranged and ink is applied to the peripheral surface thereof, and a pair of blades that adjust the amount of ink by scraping the ink applied to the peripheral surface of the ink supply roll; A support member having a pair of blade support surfaces that are supported by the blades at a predetermined interval between the tips, and the blades are pressed against the blade support surfaces of the support members from the plate thickness direction, respectively. In the ink supply apparatus comprising: a pair of pressing members to be fixed; and an ink supply means for supplying ink to a chamber defined by the peripheral surface of the ink supply roll, the both blades, and the support member; Is connected to the chamber, extends to the opposite chamber side opposite to the chamber side of the support member, and bends at the end of the support member on the opposite chamber side so as to face the opposite chamber side. A connecting member having a portion, a screw hole provided in a bent portion of the connecting member, and a bolt screwed into the screw hole and having a tip contacting the opposite side of the support member to the chamber, and rotating the bolt By moving the bent portion of the connecting member in a direction away from the support member, the pressing member connected to the connecting member moves to the blade support surface side of the support member, and the pressing member is The blade is pressed and fixed to a blade support surface of a support member.

  According to this configuration, the blade can be pressed and fixed to the blade support surface of the support member by rotating the bolt located on the side opposite to the chamber of the support member. Accordingly, it is not necessary to tighten the bolt on the chamber side of the support member and to clamp the blade between the blade support surface and the pressing member as in the prior art. For this reason, according to the present invention, there is no problem such that ink adheres to the bolts and screw holes and clogs and the bolts cannot be tightened, and it is not necessary to clean the bolts and screw holes, so that maintenance is easy. Become.

  The connecting member includes a U-shaped member that connects the pair of pressing members at both ends via the opposite chamber side of the support member, and the screw hole is the support member in the U-shaped member. It is preferable to be provided at a position facing the opposite chamber side.

  According to such a configuration, the pair of blades can be fixed simultaneously by rotating the bolt and moving the U-shaped member in a direction away from the support member. For this reason, compared with the case where each braid | blade is fixed separately, the attachment or detachment operation | work of the said braid | blade can be performed rapidly.

  An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an explanatory view showing a partial cross section of an embodiment of the ink supply apparatus of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a state where a blade of the ink supply apparatus of the present embodiment is removed. FIG.

  An ink supply apparatus 1 according to an embodiment of the present invention shown in FIG. 1 is a doctor chamber type used in a flexographic printing machine. The ink supply device 1 includes a cylindrical anilox roll 2 rotatably supported by a shaft, a pair of blades 3, and a substantially rectangular shape that is attached to the anilox roll 2 in parallel with the blade 3. And a body-shaped support member 4. In the present embodiment, an anilox roll 2 is used as the ink supply roll. On the anilox roll 2 side of the support member 4, a groove portion 4 a having an M-shaped cross section and extending in the longitudinal direction of the support member 4 is formed.

  On the anilox roll 2 side of the support member 4, a pair of blade support surfaces 4 b that are positioned at both ends in the circumferential direction of the anilox roll 2 and are inclined toward the groove portion 4 a toward the anilox roll 2 are formed. The blade 3 is disposed on the blade support surface 4b. A pair of pressing members 6 each having a pressing surface 6a parallel to the blade supporting surface 4b are arranged opposite to the blade supporting surfaces 4b. Each blade 3 is sandwiched between the pressing surface 6a of each pressing member 6 and the blade support surface 4b of the support member 4, and is fixed with a predetermined interval between the tips. Each pressing member 6 is provided with a step portion 6b for positioning the blade 3 in contact with the base end edge of the blade 3.

  A chamber 71 is defined by the peripheral surface of the anilox roll 2, the blade 3, and the groove 4 a of the support member 4. The pair of pressing members 6 are coupled to both ends of the U-shaped member 5 disposed via the opposite chamber side 72 opposite to the chamber 71 side of the support member 4. A plurality of U-shaped members 5 are provided at intervals in the axial direction of the anilox roll 2.

  Each U-shaped member 5 is provided with a screw hole 5 a at a position facing the non-chamber side 72 of the support member 4. In the present embodiment, the portion of the U-shaped member 5 that faces the non-chamber side 72 of the support member 4 corresponds to the bent portion. Bolts (dial screws) 8 are screwed into the screw holes 5a.

  As shown in FIG. 2, the tip of the bolt 8 is in contact with the surface of the support member 4 on the side opposite to the chamber 72. For this reason, when the bolt 8 is tightened, the U-shaped member 5 moves away from the support member 4. Then, the pressing member 6 connected to both ends of the U-shaped member 5 also moves in a direction away from the anilox roll 2. As a result, the pressing surface 6a moves to the blade support surface 4b side, and the blade 3 positioned between them is pressed and fixed.

  As shown in FIG. 1, a through hole 4 c is formed in the groove 4 a of the support member 4 so as to penetrate toward the non-chamber side 72. An ink supply pipe 91 is connected to the opposite chamber side 72 of the through hole 4c. Ink is supplied into the chamber 71 from an ink source (not shown) by a pump 92 connected to the ink supply pipe 91. In the present embodiment, the through-hole 4c, the ink supply pipe 91 connected to the ink source, and the pump 92 constitute an ink supply means.

  Further, at both ends in the longitudinal direction of the support member 4, a closing member 93 that closes the ink supplied into the chamber 71 from both ends in the lateral direction of the chamber 71 is provided.

  When the blade 3 is replaced using the ink supply device 1 of the present embodiment, first, as shown in FIG. 3, the bolts 8 of the respective U-shaped members 5 are loosened so that the pressing members 6 are moved to the anilox roll 2 side. The blades 3 are moved, the pressing of the blades 3 by the pressing member 6 is released, and the blades 3 are removed. Then, the new blade 3 is inserted between the pressing surface 6a and the blade support surface 4b. When the base end edge of the blade 3 is in contact with the step portion 6 b of the pressing member 6, the blade 3 can be easily positioned.

  Then, each bolt 8 is tightened and the pressing member 6 is moved through the U-shaped member 5 in a direction in which the pressing member 6 is separated from the anilox roll 2. Both the blades 3 are pressed against each blade support surface 4b by the pressing member 6 and fixed. In this operation, the bolts 8 are sequentially tightened from the U-shaped member 5 positioned at the center of the anilox roll 2 toward the U-shaped members 5 positioned at both ends on the axis of the anilox roll 2, and both blades 3. To fix.

  According to the ink supply device 1 of the present embodiment, the blade 3 is fixed via the pressing member 6 by rotating the bolt 8 to separate the U-shaped member 5 from the support member 4. For this reason, it is not necessary to attach and detach the bolt on the anilox roll side when exchanging the blade as in the prior art, and it is possible to avoid ink from adhering to the bolt 8 and the screw hole 5a. Accordingly, there is no need to perform a cleaning operation for removing ink adhering to the bolts and screw holes, and maintenance is facilitated.

  When one bolt 8 is tightened, the pressing member 6 connected to both ends of the U-shaped member 5 presses and fixes both blades 3 against each blade support surface 4b. Therefore, according to the ink supply device 1 of the present embodiment, both the blades 8 can be fixed simultaneously by tightening one bolt 8 as compared to the case where both blades are fixed by fixing with separate bolts. The blade 3 can be replaced quickly.

Explanatory drawing which shows embodiment of the ink supply apparatus of this invention in a partial cross section. AA sectional view taken on the line AA of FIG. Sectional drawing which shows the state which removed the braid | blade of the ink supply apparatus of embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Ink supply apparatus, 2 ... Anilox roll (ink supply roll), 3 ... Blade, 4 ... Support member, 4a ... Groove, 4b ... Blade support surface, 4c ... Through-hole, 5 ... U-shaped member, 5a ... Screw Hole 6, pressing member 6 a, pressing surface 6 b, stepped portion 71, chamber, 72, non-chamber side, 8 bolt (dial screw) 91, ink supply pipe, 92, pump.

Claims (2)

An ink supply roll that is rotatably arranged and has ink applied to the peripheral surface thereof, a pair of blades that adjust the amount of ink by scraping the ink applied to the peripheral surface of the ink supply roll, and the two blades A pair of support members each having a pair of blade support surfaces supported with a predetermined distance between the tips, and a pair of the blades pressed against the blade support surfaces of the support members from the plate thickness direction. An ink supply device comprising: a pressing member; and an ink supply means for supplying ink to a chamber defined by the peripheral surface of the ink supply roll, both the blades, and the support member;
A connection that is connected to the pressing member, extends to the opposite chamber side opposite to the chamber side of the support member, and has a bent portion that is bent so as to face the opposite chamber side at the end of the support member on the opposite chamber side Members,
A screw hole provided in a bent portion of the connecting member;
A bolt which is screwed into the screw hole and whose tip contacts the opposite chamber side of the support member;
By rotating the bolt and moving the bent portion of the connecting member in a direction away from the support member, the pressing member connected to the connecting member moves to the blade support surface side of the support member, and An ink supply apparatus, wherein a pressing member presses and fixes the blade to a blade support surface of the support member. The connecting member is composed of a U-shaped member that connects the pair of pressing members at both ends via the opposite chamber side of the support member, respectively.
The ink supply device according to claim 1, wherein the screw hole is provided at a position of the U-shaped member facing the side opposite to the chamber of the support member.

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