JP5608515B2 - Ink fountain device - Google Patents

Description

  The present invention relates to an ink fountain device for supplying ink in a printing press.

  Conventionally, as this kind of ink fountain device, for example, a configuration as disclosed in Patent Document 1 has been proposed. In this conventional configuration, as shown in FIG. 7, a fountain roller 113 and a base 114 constituting an ink fountain are supported on a frame 111 of a printing press. On the upper surface of the base 114, an ink reservoir 117 for storing ink is disposed between the base 114 and the outer peripheral surface of the fountain roller 113. An ink supply port 120 is formed between the edge of the lower end portion of the ink reservoir 117 and the outer peripheral surface of the fountain roller 113. An ink supply gap is formed between the front surface of the base 114 corresponding to the outer peripheral surface of the fountain roller 113 and the outer peripheral surface of the fountain roller 113 so as to be arranged in parallel in the extending direction of the fountain roller 113 along the ink supply port 120. A plurality of blades 121 for forming G are supported so as to be capable of rotational displacement.

  A stepped hole 122 penetrating in the front-rear direction is formed in an intermediate portion of the blade 121, and a bolt 123 is inserted into the stepped hole 122, and a screw portion at the tip thereof is formed in the screw hole 124 of the base 114. It is screwed. A compression spring 126 is interposed between the head of the bolt 123 and the step of the stepped hole 122, and the blade 121 is always urged to narrow the ink supply gap G.

  A plurality of gap setting mechanisms for adjusting and setting the width of the ink supply gap G are arranged on the base 114 so as to correspond to the blades 121 by rotating and displacing the blade 121 according to printing conditions and the like. Has been. Each gap setting mechanism includes a gap adjusting rod 125 that is inserted and supported so as to be movable in the front-rear direction with respect to the base 114, a motor 134 for rotating the blade 121 by moving the gap adjusting rod 125, and the like. It consists of and.

JP 2010-30265 A

  When the blade 121 is removed for cleaning, for example, and then attached, it is necessary to remove the blade 121 from the base 114 and then attach the blade 121 to the base 114 again. In that case, the bolt 123 provided in the intermediate part of the blade 121 must be screwed out and removed from the screw hole 124, and the blade 121 must be grasped and taken out after the compression spring 126 is taken out. At this time, since the bolt 123 and the compression spring 126 are provided on the front end side of the base 114 and are located below the pressure roller 113, the upper part of the pressure roller 113 and the base 114 interferes with the above operation. It is not easy to perform, and it takes time and work time.

  The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide an ink fountain device capable of easily and quickly mounting and removing a blade.

To achieve the above object, the present invention according to claim 1 includes a base and a blade that is displaceably supported by the base and that forms an ink supply gap between the base roller and the base. The blade is configured such that a rear surface and a lower surface are opened by an upper wall portion, a front wall portion on both sides of the acupoint roller, and both side wall portions, and a support pin is installed between both side wall portions of the blade, and a base A support protrusion is provided at a position facing the acupoint roller, a support groove extending along the extending direction of the acupoint roller is formed on the upper surface of the support protrusion, a support pin is supported in the support groove, and further supported on the upper surface of the base. A plate spring press-contacted to the pin is mounted and fixed by a mounting screw, and the plate spring is configured such that the protruding amount toward the support pin can be changed .

  In the present invention, a leaf spring that is press-contacted to a support pin provided on the blade is attached and fixed to the upper surface of the base with an attachment screw. Therefore, when the blade is attached to or removed from the base, the blade is attached to or removed from the base by attaching or removing the leaf spring to the base with a mounting screw on the top surface of the base without any obstacles. Can do. Such an operation can proceed without any trouble in the open space above the base.

  As described above, according to the present invention, there is an effect that the attachment and removal of the blade can be easily and quickly performed.

Sectional drawing which shows the ink fountain apparatus of one Embodiment. The fragmentary sectional view which expands and shows a part of FIG. The principal part perspective view which expands and shows the gap | interval setting mechanism and origin setting mechanism in the ink fountain device of FIG. The perspective view which expands and shows the braid | blade in the same ink fountain apparatus. Sectional drawing in the 5-5 line | wire of FIG. The partial top view which shows the attachment structure of the braid | blade with respect to a base. Sectional drawing which shows the conventional ink fountain device.

Hereinafter, an embodiment of an ink fountain device embodying the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, a fountain roller 12 constituting an ink fountain is rotatably supported between both side walls of a frame (not shown) of the printing press. In the vicinity of the bottom of the fountain roller 12, between the both side walls of the frame, a die cast base 13 constituting the lower frame structure of the ink fountain is located above the fountain roller 12 via a support shaft 14 extending parallel to the fountain roller 12. It is supported rotatably between an operating position (position in FIG. 2) and a retracted position (position in FIG. 1) spaced downward from the operating position. An ink reservoir 15 consisting of a bottom plate 15a and both side plates 15b is fixed to the upper surface of the base 13, and in the state where the base 13 is disposed at the position of FIG. Ink I for printing is stored in a space between the outer peripheral surface 12a of the fountain roller 12. In the state of FIG. 2, an ink supply port 16 is formed between the front end edge of the bottom plate 15 a and the outer peripheral surface 12 a of the fountain roller 12 at the lower end portion of the ink reservoir 15.

  As shown in FIGS. 1, 2, 4, and 5, a plurality of (for example, 10 or more) blades 17 are provided on the front surface of the base 13 on the side corresponding to the outer peripheral surface 12 a of the acupoint roller 12. Are juxtaposed along the extending direction. In the description of the embodiment, the side of the base 13 corresponding to the acupoint roller 12 is the front, and the opposite side is the rear. Each blade 17 is formed in a substantially square frame shape with the rear surface and the lower surface opened by an upper wall portion 17a, a front wall portion 17b, and both side wall portions 17c. A support pin 18 is installed and fixed between the side wall portions 17c of the blade 17.

  As shown in FIG. 4, the upper surface of the upper wall portion 17 a of the blade 17 is formed in an arc shape with the support pin 18 as the center, and the front edge of the bottom plate 15 a of the ink reservoir 15 is formed on the arc-shaped upper surface. Are joined (see FIG. 1). In the vicinity of the support pin 18, a laterally extending recess 19 is formed on the outer surface of the front wall 17 b of the blade 17. A front inverted U-shaped first groove portion 20 is formed at the lower end of the front wall portion 17b of the blade 17, and a second groove portion 21 having a side-surface square concave shape is formed at the lower end of both side wall portions 17c.

  As shown in FIGS. 1 and 2, a plurality of support protrusions 22 are formed at the positions of the blades 17 on the front surface of the base 13 in correspondence with the blades 17. A support groove 22 a extending along the extending direction of the acupoint roller 12 is formed on the upper surface of each support protrusion 22. The support pins 18 of the blades 17 are fitted into the support grooves 22 a of the support protrusions 22, so that the blades 17 are supported on the front surface of the base 13 so as to be rotatable and displaceable around the support pins 18. Yes. In this state, the ink I is supplied onto the outer peripheral surface 12a of the acupoint roller 12 between the corner portion 17d between the upper wall portion 17a and the front wall portion 17b of each blade 17 and the outer peripheral surface 12a of the acupoint roller 12. An ink supply gap 23 is formed.

  As shown in FIGS. 1, 2, and 6, a plurality of concave mounting bases 24 corresponding to the support protrusions 22 are formed at the front end of the upper surface of the base 13. A plate spring 25 is attached to each mounting base 24 by screwing a mounting screw 26 through an insertion hole 66 of the plate spring 25 into a female screw hole 65 of the base 13. Each blade 17 is elastically held by the tip of the leaf spring 25 being pressed against the outer peripheral upper surface of the support pin 18. When the blade 17 is removed for cleaning, it can be easily removed by removing or tightening the mounting screw 26 that fixes the leaf spring 25 from above.

  Below the fountain roller 12, an ink receiver 27 is disposed at the front portion of the base 13 along the extending direction of the fountain roller 12. A guide plate 28 extends from the upper portion of the wall surface of the ink receiver 27 corresponding to the blade 17, and the upper end portion of the guide plate 28 enters the recess 19 on the front wall portion 17 b of each blade 17. . The ink I leaking along the outer surface of the front wall portion 17 b of each blade 17 is collected in the ink receiver 27 along the guide plate 28.

  As shown in FIGS. 1 to 3, the base 13 has a plurality of gap settings for adjusting and setting the width of the ink supply gap 23 by rotationally displacing each blade 17 in accordance with printing conditions and the like. A gap setting mechanism 29 as a means is disposed so as to be positioned on one axis L corresponding to each blade 17. On the base 13, an origin setting mechanism 30 as a plurality of origin setting means for setting the origin position of each blade 17 is disposed so as to be positioned on the same axis L as each of the gap setting mechanisms 29. Yes.

  Therefore, the configuration of each gap setting mechanism 29 and origin setting mechanism 30 will be described in detail. Since the plurality of gap setting mechanisms 29 and the origin setting mechanisms 30 arranged corresponding to the blades 17 have the same configuration, only one set of the gap setting mechanism 29 and the origin setting mechanism 30 will be described. To do.

  In the gap setting mechanism 29, a through hole 33 is formed in the base 13 so as to extend along the axis L. A gap adjusting rod 34 is inserted into the through hole 33 so as to be movable along the axis L. A notch surface 34a is formed on the upper surface of the outer periphery of the front end of the gap adjusting rod 34, and a threaded portion 34b is formed on the rear end. A block 35 is attached to the front surface of the base 13 by a screw 36, and the gap adjusting rod 34 is prevented from rotating by engaging the block 35 with a notch surface 34a.

  A connecting pin 37 is attached to the front end of the gap adjusting rod 34 in a state where the connecting pin 37 extends in the lateral direction and both ends protrude from the outer peripheral surface of the rod 34, and is fixed by a set screw 38. The front end of the gap adjusting rod 34 is inserted into the first groove portion 20 of the front wall portion 17b of the blade 17, and both ends of the connecting pin 37 are engaged with the second groove portions 21 of the side wall portions 17c of the blade 17. Are combined. By this engagement, the front end of the gap adjusting rod 34 is connected to the lower end of the blade 17 so as to be relatively rotatable.

  A spring seat 39 is fitted into the intermediate portion of the gap adjusting rod 34 so as to be relatively movable. A spring 41 is interposed between the spring seat 39 and the intermediate step portion 33 a of the through hole 33. The spring seat 39 comes into contact with the rear surface of the lower end portion of the blade 17 by the biasing force of the spring 41 (see FIG. 4), and rattling at the connecting portion between the gap adjusting rod 34 and the blade 17 is caused through the spring seat 39. Be regulated.

  A cylindrical screw member 42 is supported behind the gap adjusting rod 34 in the large diameter portion of the through hole 33 of the base 13 so as to be rotatable and movable in the extending direction of the axis L. A first screw hole 42 a is formed in the inner periphery of the front end of the screw member 42 so as to be screwed into the screw portion 34 b of the gap adjusting rod 34. A second screw hole 42b is formed on the inner periphery of the rear end of the screw member 42, and a driven gear 42c is formed on the outer periphery of the rear end. In this case, the second screw hole 42b is formed so that the spiral pitch is the same as that of the first screw hole 42a and the spiral direction is reversed, that is, a reverse screw.

  A recess 43 is formed in the lower part of the rear surface of the base 13. A motor 44 made of a pulse motor is attached to the rear surface of the base 13 via a mounting plate 45 so as to be accommodated in the recess 43, and a drive gear 46 is attached to the motor shaft 44a. An intermediate gear 47 that meshes with the drive gear 46 and the driven gear 42 c is rotatably supported on the outer surface of the mounting plate 45. Then, the rotation of the motor 44 is controlled according to the printing conditions and the like, whereby the screw member 42 is rotated via the drive gear 46, the intermediate gear 47 and the driven gear 42c, and the first screw hole 42a and the screw portion 34b. The gap adjusting rod 34 is moved forward and backward in the extending direction of the axis L via the. By this advance / retreat movement, the blade 17 is rotationally displaced about the support pin 18 and the width of the ink supply gap 23 is adjusted and set.

  In this case, the screw portion 55c of the connecting rod 55 in the origin setting mechanism 30 described later is screwed into the second screw hole 42b of the screw member 42. The threaded portion 55c of the connecting rod 55 is formed so that the spiral direction is reversed at the same spiral pitch as the threaded portion 34b of the gap adjusting rod 34. Therefore, when the screw member 42 is rotated by the motor 44 in a state where the rotation of the connecting rod 55 is restricted, the gap adjusting rod 34 doubles the feed pitch by both the screw portions 55c and 34b, and the extending direction of the axis L It is moved forward and backward along.

  In the origin setting mechanism 30, a support block 51 is attached to the rear portion of the base 13 with screws 52 corresponding to the screw members 42 of the gap setting mechanism 29. A support hole 53 is formed in the support block 51 so as to be positioned on the same axis L as the gap adjusting rod 34 and the screw member 42 of the gap setting mechanism 29, and a screw hole 51 a is formed at the rear end of the support hole 53. Is formed. An operation knob 54 is rotatably supported around the axis L in the support hole 53 at the rear of the support block 51. The operation knob 54 is formed with a first screw portion 54a that is screwed into the screw hole 51a of the support block 51, and a second screw portion 54b having a spiral pitch different from that of the first screw portion 54a.

  A connecting rod 55 is inserted and supported in the support hole 53 in front of the operation knob 54 so as to be movable in the extending direction of the axis L, and a keyway 55a is formed on the upper surface of the outer periphery of the rear end of the connecting rod 55. Yes. A restriction bolt 56 is screwed onto the base 13 and the support block 51, and a restriction protrusion 56a protruding from the lower end of the restriction bolt 56 is engaged with the key groove 55a, whereby the connecting rod 55 is prevented from rotating. ing. A screw hole 55b is formed at the rear end of the connecting rod 55 to be screwed into the second screw part 54b of the operation knob 54, and a screw part 55c is screwed into the second screw hole 42b of the screw member 42 at the front end. Is formed. The screw portion 55c is formed so that the spiral direction is reversed at the same spiral pitch as the screw portion 34b of the gap adjusting rod 34 in the gap setting mechanism 29.

  A first screw mechanism S1 as a first screw means of two types of screw means having different helical pitches is configured by the first screw portion 54a of the operation knob 54 and the screw hole 51a of the support block 51. ing. The second screw portion 54b of the operation knob 54 and the screw hole 55b of the connecting rod 55 constitute a second screw mechanism S2 as the second screw means of the two types of screw means. Then, by rotating the operation knob 54, the connecting rod 55 is moved in the extending direction of the axis L by the difference between the helical pitches of the screw mechanisms S1 and S2. By this movement, the gap adjusting rod 34 of the gap setting mechanism 29 is moved forward and backward integrally with the connecting rod 55 via the screw member 42, and the origin position of the blade 17 is set.

  In this case, the origin position of the blade 17 means that an ink supply gap 23 having a predetermined width is formed between the corner portion 17 d of the blade 17 and the outer peripheral surface 12 a of the fountain roller 12, and a predetermined thickness is formed on the outer peripheral surface 12 a of the fountain roller 12. This shows a state in which a layer of ink I having a thickness (for example, 5 μm) is formed. The origin position of the blade 17 is set by rotating the operation knob 54 while confirming the thickness of the layer of the ink I by a sensor (not shown) or the operator's eyes.

  As shown in FIG. 1, a control board 60 is disposed below the base 13, and a controller 61 for controlling the operation of the motor 44 and the like of the gap setting mechanism 29 is mounted on the control board 60. Has been. In this case, the control board 60, the controller 61, and the like are disposed at a ratio of one set for each of the plurality of sets of the gap setting mechanism 29 and the origin setting mechanism 30 so as to control the operations of the plurality of sets of mechanisms 29, 30 simultaneously. It has become.

Next, the operation of the ink fountain device of the printing press configured as described above will be described.
Now, at the time of preparation before the start of the operation of the printing press or at the time of recovery after a power failure, it is necessary to set the plurality of blades 17 opposed to each other along the outer peripheral surface 12a of the acupoint roller 12 to the origin positions. In this case, when the operation knob 54 of the origin setting mechanism 30 is rotated, the first screw mechanism S 1 including the first screw portion 54 a of the operation knob 54 and the screw hole 51 a of the support block 51 and the second screw of the operation knob 54. The connecting rod 55 is moved in the extending direction of the axis L by the difference in the helical pitch of the second screw mechanism S2 formed by the portion 54b and the screw hole 55b of the connecting rod 55. By this movement, the gap adjusting rod 34 of the gap setting mechanism 29 is moved forward and backward integrally with the connecting rod 55, and the blade 17 secures the ink supply gap 23 having a predetermined width between the blade 17 and the outer peripheral surface 12 a. Set to the origin position.

  As described above, when the operation of the printing press is started in a state where each blade 17 is set to the origin position, the blade 17 is rotationally displaced by the gap setting mechanism 29 in each blade 17 according to the printing conditions and the like. The width of the ink supply gap 23 is adjusted and set, and the amount of ink I supplied to the outer peripheral surface 12a of the fountain roller 12 is adjusted and set. That is, in each blade 17, when the motor 44 of the gap setting mechanism 29 is rotated under the control of the controller 61, the screw member 42 is rotated via the drive gear 46, the intermediate gear 47, and the driven gear 42 c. The gap adjusting rod 34 is moved back and forth in the direction of extension of the axis L through the screw hole 42a and the screw portion 34b. By this advance / retreat movement, the blade 17 is rotationally displaced about the support pin 18 and the width of the ink supply gap 23 is adjusted and set.

  When the blade 17 is removed for cleaning or the like, the bottom plate 15a is separated from the base 13, the mounting screw 26 is screwed out of the female screw hole 65 of the base 13, and the leaf spring 25 is taken out. Can be pulled out. When the blade 17 is attached to the base 13, it can be easily performed by an operation reverse to the above.

Therefore, according to this embodiment, the following effects can be obtained.
(1) In the ink fountain device of the present embodiment, a plate spring 25 that is pressed against the support pin 18 is fixedly attached to the upper surface of the mounting base 24 of the base 13 by means of mounting screws 26. On the other hand, the support pin 18 of the blade 17 is supported by the upward support groove 22a and is pressed by the leaf spring 25 from the upper surface side. Therefore, when the blade 17 is attached to or detached from the base 13, the mounting screw 26 is screwed into or retracted from the female screw hole 65 of the mounting base 24 on the upper surface of the mounting base 24 without an obstacle, thereby providing a leaf spring. By attaching or removing 25, the blade 17 can be attached to or removed from the base 13. Such an operation can proceed without any trouble in the open space above the mounting base 24.

Therefore, according to this embodiment, for example, when the blade 17 is detached for cleaning, the blade 17 can be easily attached and removed from the base 13, and the replacement and maintenance of the blade 17 can be performed smoothly. It can be carried out.
(2) The leaf spring 25 is configured to press-contact the support pin 18 across the entire side wall portions 17 c of the blade 17. For this reason, the displacement of each blade 17 is effectively suppressed, and the function of the blade 17 can be sufficiently achieved.
(3) Since each leaf spring 25 is mounted and fixed on the upper surface of the mounting base 24 by two mounting screws 26, each leaf spring 25 can be fixed to the base 13 in a stable state. The function as an elastic body of each leaf spring 25 can be stably exhibited.
(4) The leaf spring 25 is fixedly attached to a concave mounting base 24 provided on the upper surface of the base 13 by means of mounting screws 26. Therefore, the leaf spring 25, the mounting screw 26, and the blade 17 can be arranged in the concave space formed by the mounting base 24, and the ink fountain device can be downsized.

(Example of change)
In addition, this embodiment can also be changed and embodied as follows.
As shown by a two-dot chain line in FIG. 6, the insertion hole 66 of the leaf spring 25 is a long hole 67 extending in the front-rear direction so that the leaf spring 25 can be moved and adjusted in the front-rear direction so that the plate toward the support pin 18 The projecting amount of the spring 25 can be changed. In this case, the leaf spring 25 can be displaced simply by loosening without removing the mounting screw 26, and as a result, the blade 17 can be easily removed.

It is also possible to omit the mounting base 24 of the base 13 and fix the leaf spring 25 to the upper surface of the base 13 with mounting screws 26.
It is also possible to form the leaf spring 25 so as to be narrow so that only the outer periphery of the support pin 18 is pressed, for example.

  The mounting screw 26 for fixing the leaf spring 25 to the mounting base 24 can be constituted by one, or can be constituted by three or more.

  DESCRIPTION OF SYMBOLS 12 ... Acupoint roller, 13 ... Base, 17 ... Blade, 17a ... Upper wall part, 17b ... Front wall part, 17c ... Side wall part, 18 ... Support pin, 22 ... Support protrusion, 22a ... Support groove, 23 ... Ink supply gap 25 ... leaf springs, 26 ... mounting screws.

Claims (1)

The base,
It is supported by the base so as to be displaceable, and includes a blade for forming an ink supply gap with the acupoint roller,
The blade is configured such that a rear surface and a lower surface are opened by an upper wall portion, a front wall portion on both sides of the acupoint roller, and both side wall portions, and a support pin is installed between both side wall portions of the blade, and a base A support protrusion is provided at a position facing the acupoint roller, a support groove extending along the extending direction of the acupoint roller is formed on the upper surface of the support protrusion, a support pin is supported in the support groove, and further supported on the upper surface of the base. A leaf spring that is pressed against the pin is fixed with a mounting screw .
The ink fountain device according to claim 1 , wherein the leaf spring is configured such that a protruding amount toward the support pin is changeable .

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