JP4398337B2 - Ink fountain device for printing machine - Google Patents

Description

  The present invention relates to an ink fountain device for a printing press suitable for removing and cleaning ink remaining in an ink fountain.

  In an ink fountain device of a printing press, it is necessary to perform cleaning every time the color is changed. In this cleaning, the inner surface of the ink fountain must also be completely cleaned. The cleaning of the inner surface of the ink fountain is difficult to automate because the inner surface of the ink fountain has a complicated structure. This manual cleaning is cumbersome, which not only increases the burden on the operator, but also increases the work time, which causes a decrease in productivity.

In order to solve this problem, in a conventional ink fountain device of a printing press, a film-like shape comprising a band-like portion covering the bottom surface of the ink fountain body and ears covering both sides of the ink fountain ink fountain. A cover is provided, and a method of removing ink remaining on the cover by moving the cover at the time of cleaning is employed (for example, see Patent Document 1). In addition, the applicant could not find any prior art documents closely related to the present invention by the time of filing other than the prior art documents specified by the prior art document information described in the present specification. .
JP-A-9-99544 (paragraphs “0016”, “0021” and FIGS. 4 and 5)

  In the ink fountain device of the conventional printing press described above, as shown in FIG. 19, the ear 102 of the cover 101 is bent when being sandwiched between the front end of the ink clog and the peripheral surface of the fountain roller. A kerf 104 is provided between the strip 103 and the ear 102. For this reason, when the stop position of the cover 101 is shifted, a part of the kerf 104 may be positioned between the bottom surface of the ink fountain and the bottom portion of the ink clog. For this reason, there is a problem that ink leaks due to the formation of a portion that is not covered by the cover 101 in the ink weir.

  Further, in the ink fountain device of the conventional printing press, as shown in FIG. 20A, the bent portion 106 formed on the ear portion 102 of the cover 101 is connected to the front end of the ink scum 107 and the peripheral surface of the heel roller 108. The structure is sandwiched between the two. For this reason, a part of the ear portion 102 of the cover 101 is bent at a right angle, and the bent portion 106 is bent in a direction orthogonal to the bent direction so as to be brought into contact with the circumferential surface of the scissors roller 108. A large number of ridges 109 are generated in the bent portion 106 without the entire bent portion 106 being in close contact with the peripheral surface of the ridge roller. For this reason, since a large number of gaps are formed between the bent portion 106 and the peripheral surface of the saddle roller 108 by the large number of ridges 109, there is a problem that ink leaks from these gaps. Further, the bent portion 106 is dragged by the rotation of the reed roller 108, and the cover 101 is bent several times between the front end of the ink deposit 107 and the peripheral surface of the reed roller 108 as shown in FIG. In some cases, the ink leaks due to an increase in the gap between the cover 101 and the reed roller 108 interposed.

  Therefore, the present invention has been made in view of the above-described conventional problems, and an object thereof is to prevent ink leakage from the ink fountain.

  In order to achieve this object, the invention according to claim 1 includes a reed roller that is rotatably supported, an ink fountain body that is supported in the vicinity of the reed roller and forms a bottom surface of the reed, and the ink A film-like cover having a pair of ink weirs that are supported by the main body and facing each other to form both sides of the ink fountain, a belt-like portion that covers the bottom surface of the ink fountain, and an ear that covers both sides of the ink fountain In the ink fountain device of a printing press comprising: a pair of ink fountains, a first position where both side surfaces of the ink fountain are substantially orthogonal to a bottom surface of the ink fountain, and both side surfaces of the ink fountain; The angle between the bottom surface of the ink fountain is supported so as to be swingable between a second position where the angle is an obtuse angle, and is movable in the advancing and retreating direction with respect to the fountain roller at the second position. Each ink By key cough advances, it is provided with a cutting means for cutting a part of the vicinity between the film-like strip portion and the ear portion of the film-like cover of the cover.

  The invention according to claim 2 is the invention according to claim 1, wherein a pinching member made of an elastic material that sandwiches a part of the ear portion together with an end face of the scissors roller is provided in the ink weir.

  According to a third aspect of the present invention, in the first aspect of the invention, the cutting means may be in contact with an end surface of the reed roller at a front end of an advancing / retreating shaft that moves the ink scale in a reciprocating direction with respect to the reed roller. It is attached.

  According to a fourth aspect of the present invention, in the first aspect of the invention, the cutting portion of the film-like cover cut by the cutting means is along a plurality of ink fountain keys capable of adjusting a gap with the fountain roller. It is made into the site | part which is bent and is not contacted with the said ink dam.

The invention according to claim 5 is the invention according to claim 1, wherein the film-like cover is formed in a long shape, and the film-like cover is drawn out from a supply roll and wound up by a take-up roll. .

  The invention according to claim 6 is the invention according to claim 1, wherein the ink fountain is formed on the side surface of the ink fountain with rubber that contacts the end surface of the roller when the side surface of the ink fountain is positioned at the first position. The clamping part is supported.

  According to the present invention, it is possible to prevent ink leakage from the ink fountain even if the stopping position of the film-like cover is slightly shifted. Further, since it is not necessary to provide a cut groove in the film-like cover in advance, the processing of the cover becomes easy.

  According to the invention of claim 2, since the film-like cover sandwiched between the sandwiching member and the end surface of the reed roller is not dragged by the revolving of the reed roller, leakage of ink from the ink reed is prevented. can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view of an ink fountain device of a printing press according to the present invention, FIG. 2 is a side view of the same, FIG. 3 is a plan view of the same ink fountain drive device, FIG. 4 is a front view of the ink fountain drive device, and FIG. 3A is a cross-sectional view taken along line V (a) -V (a) in FIG. 3, FIG. 4B is a cross-sectional view taken along line V (b) -V (b) in FIG. 3, and FIG. VI (a) -VI (a) line cross-sectional view in FIG. 3, the same figure (b) is VI (b) -VI (b) line cross-sectional view in FIG. 3, and the same figure (c) is VI (c)-in FIG. VI (c) is a sectional view taken along line VI, (d) is a sectional view taken along line VI (d) -VI (d) in FIG. 3, FIG. 7 is a plan view of the film-like cover, and FIG. .

  FIGS. 9 to 11 are also for explaining the wrinkle washing operation. FIG. 9 shows a printing operation state, FIG. 9 (a) is a side view, and FIG. 9 (b) is a front view showing a part. 10 shows a state where cleaning is started, FIG. 11A is a side view, FIG. 11B is a front view showing a part thereof, FIG. 11 is a side view showing a state after cleaning, and FIGS. FIG. 12 is a side view showing a state in which the ink fountain body is returned to the operating position, FIG. 13 is a side view showing a state in which the ink fountain has been advanced, and FIG. The both sides | surfaces of a bud show the state orthogonal to the bottom face of the ink fountain, the figure (a) is a side view, and the figure (b) is a front view which shows a part.

  FIG. 15 is a view for explaining the operation of cutting a part of the ear part of the film-like cover with the cutter, and FIG. 15 (a) is a perspective view of the main part showing a state in which the ink deposit is advanced. (B) is a perspective view of the main part showing a state in which a cutting line is formed in a part of the ear part of the film-like cover by the advanced ink-staking cutter, and FIG. FIG. 16A is a perspective view of a main part showing a state in which a film-like cover is sandwiched between the ink pad and the end surface of the reed roller, FIG. 16A is a flowchart for explaining the reed washing operation, and FIG. FIG. 17 is a flowchart for explaining the wrinkle return operation, FIG. 17 shows the ink fountain device of the printing press, FIG. 17 (a) is a side view, and FIG. 17 (b) is a front view showing a part.

  1 and 2, reference numeral 1 denotes a frame of a printing unit, 2 denotes an ink fountain device, 3 denotes a fountain roller constituting the ink fountain device 2, 4 denotes a calling roller, and 5 denotes an ink kneading roller. An inking device that supplies ink (not shown) is configured.

  The ink fountain device 2 includes a fountain roller 3 driven by a fountain roller motor 6 (see FIG. 8), an ink fountain body 7 which is supported in the vicinity of the fountain roller 3 and forms a bottom surface 7a of the ink fountain, A plurality of ink fountain keys 9 provided on the bottom surface 7a of the ink fountain and capable of adjusting a gap with the fountain roller 3 by a fountain key motor 8 (see FIG. 8), and trapezoidal shapes supported by the ink fountain body 7 and facing each other. The formed surface is generally constituted by a pair of ink fountains 10 forming both side surfaces 10a of the ink fountain.

  As shown in FIG. 9A, the ink fountain body 7 is centered on the rotation center 12 by the operation position for forming the ink fountain with the fountain roller 3 and the drive of the air cylinder 11 for opening and closing the fountain (see FIG. 8) As shown in FIG. 11, the bottom surface 7a of the ink fountain is movably provided at a retreat position where the bottom surface 7a is substantially horizontal.

  As shown in FIG. 2, the ink fountain apparatus 2 includes a long film-like cover (hereinafter simply referred to as a cover) 13 provided so as to cover the inner surface of the ink fountain, and a cover supply roll 14 that feeds out the cover 13. And a cover transport device 15 for moving the cover 13 drawn out from the cover supply roll 14 and passing through the ink fountain key 9 so as to cover the inner surface of the ink fountain.

  The cover transport device 15 is provided on the downstream side of the ink fountain body 7 in the cover transport direction, and is a cover roller that winds the cover 13 using a guide roller 16 that guides the cover 13 and a cover winding motor 17 (see FIG. 8) as drive sources. And a take-up roll 18.

  The cover transport device 15 moves the cover 13 so that the portion covering the inner surface of the ink fountain is pulled out of the ink fountain and the new portion is positioned on the bottom surface 7a of the ink fountain. A brake mechanism (not shown) is connected to the supply roll 14 so that a predetermined tension is applied to the cover 13.

  A residual ink removing device 20 is provided on the upstream side of the cover take-up roll 18 in the cover conveyance direction, and removes the ink 21 remaining on the cover 13 by scraping.

  Reference numeral 22 denotes a guide roller, and a plurality of guide rollers are provided on the transport path of the cover 13 drawn from the cover supply roll 14. Reference numeral 23 denotes a cover stop position detection sensor. When one of a number of ears 27 described later of the cover 13 is detected by the cover stop position detection sensor 23, one of the other ears 27 is detected. It is configured to be positioned at a predetermined position.

  Reference numeral 25 denotes a control device, which uses a cover stop position detection sensor 23, a cleaning start button 48, a wrinkle return start button 49, and various signals from the inside of the printing press, and a reed roller motor 6, reed key motor 8, and reed opening / closing air. Control of the drive of the cylinder 11, the cover winding motor 17, the ink foward advance / retreat air cylinder 40 and the ink crease opening / closing air cylinder 44 is controlled.

  As shown in FIG. 7, the cover 13 has a strip-like portion 26 formed to have the same width as the bottom surface 7a of the ink fountain and a constant pitch on both sides of the strip-like portion 26 in the transport direction. It is comprised by the ear | edge parts 27 and 27 formed by protruding integrally.

  The ear part 27 is formed in a substantially trapezoidal shape in plan view, and is provided on the other end side with a rectangular sandwiched part 27a provided on one end side (indicated with a grid-like hatching in the figure for convenience). A marginal portion 27b that is formed in a small triangle shape and does not contact the ink fountain 10 (a hatched portion in the figure for convenience) and a trapezoidal shape that is provided in the center and contacts the side surface 10a of the ink fountain 10 It is integrally formed with the formed contact portion 27c.

  Next, with reference to FIGS. 3 to 6, the ink staking drive means 30 that moves the ink squirt 10 in the forward and backward directions and rotates it in the opening and closing direction will be described.

  In FIG. 3, reference numerals 32 and 33 denote support blocks, which are attached to a fixed block 31 fixed on the frame 7 b of the ink fountain body 7 so as to be spaced apart from each other in the direction of arrows A-B. ing. As shown in FIG. 5 (a), an advancing / retreating shaft 34 that is movable in the direction of arrows AB and whose rotation about the axis is restricted is supported between the support blocks 32 and 33. A step 34 a is provided on one end side of 34.

  A gear 36 is rotatably supported on the advancing / retracting shaft 34, and the gear 36 is engaged with a stepped portion 34 a of the advancing / retreating shaft 34, and the other end is connected to the axis 37 by a ring 37 attached to the advancing / retreating shaft 34. Movement in the direction is restricted. The ink scale 10 described above is fixed to a flange 36 a formed on one end side of the gear 36.

  A clamping member 38 formed in a flat rectangular parallelepiped shape with rubber, which is an elastic material having a relatively large frictional force, is detachably fixed to the end of the ink stake 10 on the arrow A side by a bolt 55. The frictional force between the clamping member 38 and the cover 13 is larger than the frictional force between the cover 13 and the end surface 3 a of the heel roller 3. When this clamping member 38 is attached to the ink basin 10, the end surface of the clamping member 38 is at the same surface position as the side surface 10a of the ink fountain 10 as shown in FIG.

  In FIG. 17, reference numeral 39 denotes a cutter as cutting means, which is connected to the front end of the advancing / retracting shaft 34 through a bent portion 39a formed integrally, as shown in FIG. It is attached so as to be in contact with 3a, and the cross section is formed in an elongated rectangle. A blade portion 39b is formed at the upper end of the cutter 39, and the blade portion 39b is formed in a straight line so as to incline downward toward the arrow A direction as shown in FIG. ing. As will be described later, the height of the left end of the blade portion 39b is such that when a part of the sandwiched portion 27a of the ear portion 27 of the cover 13 is cut, as shown in FIG. It is positioned at the folding line 27e.

  In FIG. 3, reference numeral 40 denotes an ink depositing / retreating air cylinder fixed on the frame 7b of the ink fountain body 7, and the tip of a rod 40a which can be moved back and forth is connected to one end of the advancing / retreating shaft 34. As the motor advances and retreats, the advance / retreat shaft 34 moves in the direction of the arrow AB, and the gear 36 moves in the direction of the arrow AB along with this movement.

  When the gear 36 moves in the direction of arrow A, as shown in FIG. 3, the ink deposit 10 also moves in the direction of arrow A, so that the clamping member 38 comes into contact with the end surface 3 a of the saddle roller 3. On the other hand, when the gear 36 moves in the direction of the arrow B, the ink deposit 10 also moves in the direction of the arrow B, so that the holding member 38 is separated from the end surface of the saddle roller 3 in the direction of the arrow B.

  Reference numeral 42 denotes a rotating shaft, which is supported between the support blocks 32 and 33 so as to be rotatable and whose movement in the axial direction is restricted. As shown in FIG. 4, a gear portion 42a formed in a sector shape is integrally provided.

  The gear portion 42a meshes with the gear 36, and the total length in the axial direction of the gear 36 is the same as that of the gear portion 42a when the advancing / retracting shaft 34 is moved in the arrow AB direction by the ink squeezing / retreating air cylinder 40. The length is such that the meshing state is maintained.

  In FIG. 4, reference numeral 44 denotes an ink squeeze opening / closing air cylinder fixed on the frame 7b of the ink fountain body 7. The rod 44a, which can be moved back and forth in the figure, has a rod 44a as shown in FIG. The pins 45 are attached so as to be orthogonal. Reference numeral 46 denotes a lever having a base end portion pivotally attached to one end portion of the rotating shaft 42 and a U-shaped groove 46a provided in the rotating end portion. A pin 45 is engaged with the U-shaped groove 46a. ing.

  Therefore, as shown in FIG. 4, when the rod 44a of the ink staking open / close air cylinder 44 is retracted, the lever 46 is pivoted clockwise around the pivot shaft 42 via the pin 45, The rotation shaft 42 also rotates clockwise.

  When the rotating shaft 42 is rotated clockwise, as shown in FIG. 6B, the gear portion 36 engaged with the gear portion 42a of the rotating shaft 42 rotates counterclockwise. As shown in FIG. 4, the ink stake 10 attached integrally with the ink fountain 10 rotates counterclockwise, and the angle between the side surface 10a of the ink fountain and the bottom surface 7a of the ink fountain becomes 90 °.

  The position of the ink scum 10 is hereinafter referred to as a first position, and in this first position, the clamping member 38 comes into contact with the end surface 3a of the reed roller 3 as shown in FIG.

  On the other hand, when the rod 44a of the ink fountain opening / closing air cylinder 44 is advanced from this state, the lever 46 is rotated counterclockwise in the drawing around the rotation shaft 42 via the pin 45, and is rotated. The shaft 42 also rotates counterclockwise.

  When the rotation shaft 42 is rotated counterclockwise, as shown in FIG. 6B, the gear portion 36 engaged with the gear portion 42a of the rotation shaft 42 is rotated clockwise. The ink sachet 10 attached integrally with the ink fountain 10 also rotates in the clockwise direction, and the angle formed between the side surface 10a of the ink fountain and the bottom surface 7a of the ink fountain is 180 °, as indicated by a two-dot chain line in FIG. Become. The position of the ink scum 10 is hereinafter referred to as a second position.

  In FIG. 8, 48 is a cleaning start push button for starting the cleaning of the ink fountain, and 49 is a fountain return starting push button for returning the ink fountain after the cleaning of the ink fountain is completed.

  Next, a cleaning operation and an operation for returning the ink fountain in the ink fountain apparatus having such a configuration will be described mainly with reference to FIGS. First, the cleaning operation will be described.

  During the printing operation, as shown in FIG. 3, the side surface 10 a of the ink fountain 10 of the pair of ink basins 10 contacts the end surface 3 a of the fountain roller 3 to form the ink fountain together with the ink fountain body 7.

  In this state, when printing is completed and the ink fountain is washed, when the washing start push button 48 (see FIG. 8) is turned on in S1 of FIG. 8 (refer to FIG. 8) is driven, and the ink fountain key 0 set in which the intervals between all the ink fountain keys 9 and the fountain rollers 3 become “0” is made (S2).

  If the intervals between all the ink fountain keys 9 and the fountain rollers 3 do not become “0”, the ink fountain key 0 is set again in S2. When the intervals between all the ink fountain keys 9 and the fountain rollers 3 become “0”, the fountain roller motor 6 (see FIG. 8) is driven, and as shown in FIG. Rotates (S3).

  The ink on the reed roller 3 is removed by the ink reed key 9 by the rotation of the reed roller 3, and the driving of the reed roller motor 6 is stopped and the rotation of the reed roller 3 is stopped in S4.

  In FIG. 4, when the rod 44a of the ink staking open / close air cylinder 44 is moved forward, the ink stake 10 is rotated from the first position shown by the two-dot chain line to the second position shown by the solid line in FIG. 10 (b). Then, it is opened from the end surface 3a of the reed roller 3 (S5).

  In FIG. 3, when the rod 40 a of the ink foward advance / retreat air cylinder 40 is retracted, as shown in FIG. 10A, the ink stake 10 moves backward and moves in the direction of arrow B in FIG. The member 38 is separated from the end surface 3a of the saddle roller 3 (S6).

  In FIG. 8, the air cylinder 11 for opening and closing the tub is operated, and as shown in FIG. 10A, the ink fountain body 7 is rotated counterclockwise around the rotation center 12 to open the ink fountain. (S7). At the same time, in FIG. 8, the heel roller motor 6 is driven to rotate the heel roller 3 (S8).

  At the same time, in FIG. 8, the cover winding motor 17 is driven, the cover winding roll 18 is rotated, and the cover 13 is conveyed in the direction of arrow B in the figure (S9). At this time, since the reed roller 3 is rotating, the ink remaining on the peripheral surface of the reed roller 3 is transferred onto the cover 13. In S10, the driving of the heel roller motor 6 is stopped and the rotation of the heel roller 3 is stopped.

  As shown in FIG. 11, a new part of the cover 13 covers the bottom surface 7a of the ink fountain body 7, and a part of the sandwiched part 27a of the ear part 27 is shown in FIG. When the ten clamping members 38 are in contact with each other, the cover stop position detection sensor 23 is turned on in S11. At this time, since the cover 13 is bent obliquely downward along the upper edge 9a of the ink fountain key 9 to form a folding line 27e, the portion 27d of the sandwiched portion 27a that is not in contact with the clamping member 38 is also folded. 27e is bent obliquely downward.

  When the cover stop position detection sensor 23 is turned ON, the drive of the cover winding motor 17 is stopped, the winding of the cover 13 is stopped in S12, and the ink 21 remaining on the cover 13 is scraped by the ink removing device 20. The ink fountain cleaning operation is completed (S13). At this time, as shown in FIG. 15A, the cutter 39 faces the portion 27d that is not in contact with the sandwiching member 38 of the sandwiched portion 27a.

  Next, the operation for returning the ink fountain will be described.

  In S15, when the fountain return start push button 49 is turned ON, the control device 25 controls the fountain opening / closing air cylinder 11 (both see FIG. 8) to be driven, and as shown in FIG. Rotates around the rotation center 12 in the clockwise direction in the figure, and the ink fountain key 9 faces the peripheral surface of the fountain roller 3 to close the fountain (S16).

  In S17, the rod 40a of the ink fountain advance / retreat air cylinder 40 moves forward, so that the ink squirt 10 moves in the direction of arrow A as shown in FIG. It faces a part of the end surface 3a of the roller 3.

  At this time, the cutter 39 also moves forward from the state shown in FIG. 15A in the direction of arrow A, as shown in FIG. 15B, so that the portion not in contact with the clamping member 38 of the sandwiched portion 27a. 27 d is cut along the end surface 3 a of the heel roller 3 to form a cutting line 28.

  In this state, when the rod 44a of the ink staking open / close air cylinder 44 is retracted in S18, the ink stake 10 is rotated from the second position to be positioned at the first position, as shown in FIG. Thus, the ink scum 10 closes the end surface 3 a of the reed roller 3.

  At this time, since the cutting line 28 is formed in the sandwiched portion 27 a of the cover 13, the ear portion 27 is bent by the ink basin 10 along the cutting line 28, and the side surface 10 a of the ink fountain of the ink basin 10 is Covered by the contact portion 27 c of the ear portion 27. At the same time, the sandwiched portion 27 a is bent from the cutting line 28 by the sandwiching member 38, and the sandwiched portion 27 a is sandwiched between the sandwiching member 38 and the end surface 3 a of the roller 3.

  In this manner, the ink wetting 10 is advanced, and the cutting line 28 is formed along the end surface 3a of the scissors roller 3 in the portion 27d that is not in contact with the pinching member 38 of the pinched portion 27a. The cutting start position 28a of the line 28 is positioned on the folding line 27e. Here, the folding line 27e is formed on the extended line of the upper end edge 9a of the ink fountain key 9, that is, on the extended line at the position where the ink fountain key 9 and the peripheral surface of the fountain roller 3 face each other. However, it is positioned at a portion of the cover 13 that is closest to the peripheral surface of the saddle roller 3 in a side view. In addition, the cutting start position 28a is always positioned at a position closest to the peripheral surface of the saddle roller 3 of the cover 13 even if the stop position of the cover 13 is slightly shifted by the cover stop position detection sensor 23.

  Therefore, the cutting start position 28a is not shifted in the direction of the arrow B in FIG. 15B, and a part of the cutting line 28 is not positioned between the bottom surface 7a of the ink fountain and the bottom portion of the ink pad 10. Therefore, since the portion not covered with the cover 13 is not formed in the ink weir 10, the ink does not leak from the ink fountain. Further, the cutting start position 28a is shifted in the direction of arrow A in FIG. 15B, and the cutting line 28 is not provided at the portion of the sandwiched portion 27a that is in contact with the end surface 3a of the heel roller 3. Absent. For this reason, when the ink scum 10 is rotated from the second position to the first position and the sandwiched portion 27 a of the cover 13 is folded by the sandwiching member 38, it is not possible to bend from the cutting line 28. The cover 13 does not crack and the ink does not leak from the crack.

  Further, since the frictional force between the clamping member 38 and the cover 13 is larger than the frictional force between the cover 13 and the end surface 3a of the saddle roller 3, the cover 13 is dragged by the rotation of the saddle roller 3. Therefore, leakage of ink from the ink fountain can be prevented. Further, since the sandwiched portion 27a of the cover 13 is sandwiched between the clamping member 38 of the ink fountain 10 and the end surface 3a of the heel roller 3, the entrainment of the ear portion 27 of the cover 13 due to the rotation of the heel roller 3 is prevented. be able to.

  In addition, by providing a margin 27 b that does not contact the ink staking 10 on the ear 27 of the cover 13, even if the ear 27 is slightly displaced with respect to the ink sachet 10, There are no uncovered parts. For this reason, since ink does not adhere to the ink scale 10, cleaning becomes easy.

  Further, the holding member 38 attached to the ink scum 10 can be replaced by releasing the screwing of the bolt 55, so that maintenance is easy.

  In addition, since the end surface 3a of the heel roller 3 is sufficiently polished or plated to reduce the frictional force between the end surface 3a and the ear portion 27, the heel roller 3 is caused by the frictional force of the pressing member 38. It is possible to prevent the ear portion 27 of the cover 13 from being caught by the rotation of.

  Moreover, since it is not necessary to previously provide the cover 13 with a kerf for bending, the processing of the cover 13 is facilitated.

  Further, since the clamping member 38 is formed of a rubber-like elastic material, the ink squeeze 10 and the reed roller 3 are in a state where the ink sachet 10 is rotated to the first position by the air cylinder 44 for opening and closing the ink stake. Even if a slight gap is generated between the end surface 3a, it can be absorbed by the elastic deformation of the clamping member 38. Therefore, the cover 13 can be securely sandwiched between the clamping member 38 and the end surface 3a of the saddle roller 3.

  Further, since the ear portion 27 of the cover 13 is bent by the ink wetting 10 and the ear portion 27 is sandwiched between the ink wetting 10 and the end surface 3a of the scissors roller 3, wrinkles are generated in the sandwiched portion as in the prior art. Since there is no ink leakage, ink leakage from the ink fountain can be prevented.

  18A and 18B show a second embodiment of the present invention, in which FIG. 18A is a plan view of the main part, FIG. 18B is a front view of the main part, and FIG. 18C is the same figure (a). XVIII (c) -XVIII (c) cross-sectional view, FIG. 4 (d) is the XVIII (d) -XVIII (d) cross-sectional view in FIG. 1 (a), and FIG. (E) -XVIII (e) sectional drawing and the figure (f) are XVIII (f) -XVIII (f) sectional drawings in the figure (a).

  The ink squeeze driving means generally indicated by reference numeral 70 in the drawing is provided with a fixed block 71 fixed on the frame 7b of the ink fountain body 7, and the fixed block 71 includes two support blocks 72 and 73. Are spaced apart in the direction of arrows A-B and are attached to face each other.

  Between these support blocks 72 and 73, as shown in FIG. 4D, an advancing / retreating shaft 75 is supported so as to be movable in the directions of arrows A-B and to be rotatable around the axis line. Ink scale 10 is integrally attached. Further, similarly to the first embodiment described above, it is attached to the front end of the advance / retreat shaft 75 so as to be in contact with the end surface 3a of the saddle roller 3 via the bent portion 39a.

  Reference numeral 76 denotes an ink fountain advance / retreat air cylinder, which is fixed to the support block 72 via a bracket 77. One end of the advance / retreat shaft 75 is rotatable around the axis at the tip of the rod 76a of the air cylinder 76. Is pivotally attached.

  Reference numeral 79 denotes an ink squeeze opening / closing rotor reactor fixed to the support block 72, and a drive gear 80 is mounted on the output shaft 79 a, and the drive gear 80 is attached to a shaft 82 implanted in the support plate 72. It meshes with an intermediate gear 81 that is rotatably supported. Reference numeral 83 denotes a gear serving as a rotating body attached to the advance / retreat shaft 75 and meshes with the intermediate gear 81.

  By adopting such a configuration, the output gear 79a of the rotary actuator 79 for opening and closing the ink fountain is rotated in the clockwise direction in FIG. , The gear 83 also rotates clockwise.

  Therefore, the forward / backward shaft 75 on which the gear 83 is attached also rotates in the clockwise direction, and the ink fountain 10 also rotates in the clockwise direction. Therefore, as shown by the two-dot chain line in FIG. The bottom surface 7a and the side surface 10a of the ink fountain are positioned at a second position where the angle is 180 °, which is an obtuse angle.

  In this state, when the rod 76a of the ink foward advance / retreat air cylinder 76 is retracted, the advance / retreat shaft 75 moves in the direction of arrow B in FIG. Also moves in the direction of arrow B.

  Accordingly, since the ink scum 10 is positioned at the second position and is separated from the reed roller 3 (not shown), the ink remaining in the ink fountain is cleaned as in the first embodiment. Is possible.

  When the ink remaining in the ink fountain has been cleaned, the rod 76a of the ink cylinder 76 is moved forward so that the advance / retreat shaft 75 moves in the direction of arrow A in FIG. The ink weir 10 attached integrally with the nozzle 10 also moves in the arrow A direction.

  At this time, the cutter 39 also moves forward from the state shown in FIG. 15A in the direction of arrow A, as shown in FIG. 15B, so that the portion not in contact with the clamping member 38 of the sandwiched portion 27a. 27 d is cut along the end surface 3 a of the heel roller 3 to form a cutting line 28.

  In this state, when the output shaft 79a of the rotary actuator 79 for opening and closing the ink fountain is rotated counterclockwise in FIG. 5C, the ink fountain 10 also rotates counterclockwise. As shown, the ink fountain 10 is positioned at a first position where the angle between the bottom surface 7a of the ink fountain body 7 and the side surface 10a of the ink fountain is 90 °.

  At this time, since the cutting line 28 is formed in the sandwiched portion 27 a of the cover 13, the ear portion 27 is bent by the ink basin 10 along the cutting line 28, and the side surface 10 a of the ink fountain of the ink basin 10 is Covered by the contact portion 27 c of the ear portion 27. At the same time, the sandwiched portion 27 a is bent from the cutting line 28 by the sandwiching member 38, and the sandwiched portion 27 a is sandwiched between the sandwiching member 38 and the end surface 3 a of the roller 3.

  The sandwiching member 38 is formed of nitrile rubber. However, when UV ink is used, it is desirable to use fluorine rubber having melt resistance. The hardness of the clamping member 38 is preferably Hs30-80.

  In the present embodiment, the second position of the ink fountain 10 is a position where the angle formed between the side surface 10a of the ink fountain and the bottom surface 7a of the ink fountain body 7 is 180 °, but the angle is 180 °. Any obtuse angle is acceptable.

It is a top view of the ink fountain device of the printing press which concerns on this invention. It is a side view of the ink fountain device of the printing press which concerns on this invention. It is a top view of the ink fountain drive device in the ink fountain device of the printing press which concerns on this invention. It is a front view of the ink staking drive device in the ink fountain device of the printing press which concerns on this invention. 3A is a cross-sectional view taken along line V (a) -V (a) in FIG. 3, and FIG. 3B is a cross-sectional view taken along line V (b) -V (b) in FIG. 3A is a sectional view taken along line VI (a) -VI (a) in FIG. 3, FIG. 4B is a sectional view taken along line VI (b) -VI (b) in FIG. 3, and FIG. FIG. 3 is a sectional view taken along line VI (c) -VI (c) in FIG. 3, and FIG. 4D is a sectional view taken along line VI (d) -VI (d) in FIG. It is a top view of the film-like cover in the ink fountain device of the printing press which concerns on this invention. It is a block diagram of the ink fountain device of the printing press which concerns on this invention. It is for demonstrating the washing | cleaning operation | movement in the ink fountain apparatus of the printing press which concerns on this invention, and shows a printing operation state, The figure (a) is a side view, The figure (b) is a front view which shows a part. is there. BRIEF DESCRIPTION OF THE DRAWINGS It is for demonstrating the washing | cleaning operation | movement in the ink fountain apparatus of the printing press which concerns on this invention, and shows the state which started the washing | cleaning, the same figure (a) is a side view, the same figure (b) is the front which shows a part. FIG. It is a side view for demonstrating the washing | cleaning operation | movement in the ink fountain apparatus of the printing press which concerns on this invention, and shows the state which washing | cleaning completed. It is a side view which shows the state which returned the ink fountain main body in the ink fountain apparatus of the printing press which concerns on this invention to the operation position. FIG. 5 is a side view illustrating a state in which the ink fountain body is returned to the operating position for explaining the fountain returning operation in the ink fountain device of the printing press according to the present invention. It is for demonstrating the fountain return operation | movement in the ink fountain apparatus of the printing press which concerns on this invention, The both sides | surfaces of an ink fountain show the state orthogonal to the bottom face of the ink fountain, The figure (a) is a side view, FIG. 2B is a front view showing a part. In the ink fountain device of the printing press which concerns on this invention, it is a figure for demonstrating the operation | movement which cut | disconnects a part of ear | edge part of a film-like cover with a cutter, The figure (a) shows the state which advances ink scum. The perspective view of the principal part, The figure (b) is the perspective view of the principal part which shows the state in which a cutting line is formed in a part of the ear | edge part of a film-like cover with the ink-staking cutter advanced, The figure (c). FIG. 4 is a perspective view of a main part showing a state in which a film-like cover is folded by ink staking and the film-like cover is sandwiched between the ink staking and the end face of the scissors roller. FIG. 4A is a flowchart for explaining the fountain cleaning operation in the ink fountain device of the printing press according to the present invention, and FIG. The ink fountain device of the printing press which concerns on this invention is shown, The figure (a) is a side view, The figure (b) is a front view which shows a part. FIG. 2A shows a second embodiment of the present invention, in which FIG. 1A is a plan view of the main part, FIG. 1B is a front view of the main part, and FIG. c) -XVIII (c) cross-sectional view, (d) is XVIII (d) -XVIII (d) cross-sectional view in (a), (e) is XVIII (e) in (a) of the same figure -XVIII (e) sectional view, FIG. 8 (f) is an XVIII (f) -XVIII (f) sectional view in FIG. It is a top view of the film-like cover in the conventional ink fountain apparatus. It is a perspective view which shows the principal part of the conventional ink fountain apparatus, The figure (a) shows the state which the wrinkle generate | occur | produced in the film-like cover, The figure (b) is the state where the film-like cover is dragged by the fountain roller Indicates.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Frame, 2 ... Ink fountain device, 3 ... 壷 roller, 7 ... Ink fountain body, 9 ... Ink fountain key, 10 ... Ink dam, 13 ... Film-like cover, 14 ... Cover supply roll, 15 ... Cover conveyance apparatus , 17 ... cover winding motor, 18 ... cover winding roll, 20 ... ink removing device, 23 ... cover stop position detection sensor, 25 ... control device, 26 ... belt-like portion, 27 ... ear portion, 27a ... pinched portion , 27b ... margin part, 27e ... folding line, 28 ... cutting line, 28a ... cutting start position, 30 ... ink drive device, 34 ... advance / retreat shaft, 36 ... gear, 38 ... clamping member, 39 ... cutter, 39b ... blade , 40... Ink squeezing forward / backward air cylinder, 42... Rotating shaft, 42 a... Gear part, 44 ...... Ink staking open / close air cylinder, 45 ... Pin, 46 ... Lever, 79. Actuator.

Claims (6)

A reed roller supported rotatably,
An ink fountain body which is supported close to the fountain roller and forms the bottom surface of the ink fountain;
A pair of ink weirs supported by the ink fountain body and facing each other to form both sides of the ink fountain;
In an ink fountain device of a printing press comprising a strip-shaped portion covering the bottom surface of the ink fountain and a film-like cover having ears covering both sides of the ink fountain,
The pair of ink weirs has an obtuse angle between a first position where both side surfaces of the ink fountain are substantially orthogonal to the bottom surface of the ink fountain, and both side surfaces of the ink fountain and the bottom surface of the ink fountain. The second position is supported so as to be swingable, and is movable in the advancing and retreating direction with respect to the saddle roller at the second position,
The pair of ink weirs is provided with a cutting means for cutting a part of the vicinity between the band-like portion of the film-like cover and the ear portion of the film-like cover by advancing each ink weir. An ink fountain device for printing machines. In the ink fountain device of the printing press according to claim 1,
An ink fountain device for a printing press, comprising: a pinching member made of an elastic material that sandwiches a part of the ear portion together with an end surface of the heel roller at the ink sachet. In the ink fountain device of the printing press according to claim 1,
An ink fountain device for a printing press, characterized in that the cutting means is attached to a front end of an advancing / retreating shaft for moving the ink weir in an advancing / retreating direction with respect to the fountain roller so as to be in contact with an end surface of the fountain roller. In the ink fountain device of the printing press according to claim 1,
The cut portion of the film-like cover cut by the cutting means is a portion that is bent along a plurality of ink fountain keys whose gaps with the fountain roller can be adjusted and does not come into contact with the ink clog. Ink fountain device for printing press. In the ink fountain device of the printing press according to claim 1,
An ink fountain device for a printing press, wherein the film-like cover is formed in a long shape, and the film-like cover is drawn out from a supply roll and taken up by a take-up roll. In the ink fountain device of the printing press according to claim 1,
An ink for a printing press, characterized in that, on the side surface of the ink fountain, a nipping portion formed by rubber that contacts the end surface of the roller when the side surface of the ink fountain is positioned at the first position is supported. Dredge equipment.

Images