JPS5896559A - Inking device of intaglio printer - Google Patents

Abstract

PURPOSE:To promote ink transfer and prevent deterioration in the ink transfer due to reduced viscosity by driving the rotation of a pattern roller provided between the intaglio drum and the ink pot roller at a peripheral speed that is faster than the peripheral speed of the intaglio plate. CONSTITUTION:A pattern roller 52 on the periphery of which a letterpress plate with a picture pattern formed a little larger than the pattern formed on an intaglio plate is provided between an ink pot roller 17 and an intaglio plate drum 3 on the periphery of which an intaglio plate is mounted in such a way that the periphery of the pattern roller 53 is in contact with the peripheries of the roller 17 and the intaglio plate 3. The roller 52 is driven at a speed that is faster by 1-3% than the peripheral speed of the intaglio plate on the intaglio plate drum 3. The rotation of the intaglio plate drum 3 is transmitted to a rider roller 43 through the roller 52 and the roller 17, and the ink 39 in the ink pot 38 is made to flow out of the gap between the roller 17 and a blade 36. The ink is attached to the rotating roller 17 on its periphery and the ink is spread uniformly by the roller 43 and then the ink is transferred to the letterpress plate of the roller 52, then the ink 39 is transferred to the intaglio plate drum 3 with the ink rubbed into the intaglio pattern of the intaglio plate.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an inking device for supplying ink stored in an ink fountain to an intaglio surface in an intaglio printing press. .

Printing work with an intaglio printing machine involves wiping off ink other than the pattern area from the ink supplied to the intaglio surface on the plate cylinder by the inking device with the wiping row 2, and then removing the paper that passes between the plate cylinder and the impression cylinder. Then, the remaining ink of the pattern is transferred and printed.

The inking device of this type of intaglio printing press consists of an ink fountain that stores ink, a P-2 group that flows out from the ink fountain and transfers the ink in various directions, and a roller group that transfers the ink to the plate surface. The ink forming roller is called a batten roller 2 in the case of a printing machine, and the ink forming roller is called a batten roller 2 in the case of a printing machine, and the ink forming roller is equipped with a pattern having a wider area than an intaglio plate. is formed by rubber letterpress.

In such an inking device, a large number of rollers are installed between the ink fountain and the drum roller to smooth the ink flowing out from the ink fountain in each direction and then supply it to the plate surface. is provided. however,
While ink becomes uniform by passing through many rollers, the viscosity increases as it is kneaded over and over again by the rollers.
Wiping by the wiping row 2 may not be performed sufficiently. In other words, when the number of rollers is large, not only does the number of contact surfaces of the rollers, so-called nips, increase, but also because every time ink heading toward the printing plate passes through a nip, half of the ink is returned to the upstream row 2. , viscous inks attract each other and remain without being transferred, and these inks with high viscosity f are mixed and supplied to the print.
As a result, the wiping effect deteriorates more and more, causing printed matter to become unclear. In this case, it is necessary to use a strong triclene-based cleaning solution for wiping, which causes problems with fat retention.

Therefore, it is preferable to reduce the number of rollers between the inner pot fours and the pattern roller, or to bring both rollers into direct contact with each other, but in this case, as mentioned above, one intaglio This is inevitable because extra ink is supplied to areas that are not designed, and the ink is not well-mixed, so it is loose and the transferability of the roller is poor.
When O ink is supplied, the amount of ink removed by wiping increases, resulting in an increase in the amount of ink and cleaning fluid used for wiping, resulting in an increase in running costs.

The present invention was developed in view of the above points, and includes providing a pattern roller having a curved pattern on its circumferential surface so that its circumferential surface is in contact with the intaglio surface on the intaglio cylinder and the circumferential surface of the ink fountain roller. In order to improve the wiping effect by lowering the viscosity in the inner layer, the pattern row 20 circumferential speed was lower than the intaglio circumferential speed by 1-L31! Rather than making it faster, make the inside part an intaglio surface.p
To provide an in-line device for an intaglio printing press which reduces the amount of ink supplied and the amount of cleaning liquid for wiping by accelerating ink transfer and eliminating deterioration of ink transferability due to a decrease in viscosity. Embodiments of the present invention will be described in detail below with reference to the drawings.

Figure 5 shows an embodiment of the inking device according to the present invention, Figure 111 is a sectional view thereof, Figure IIz is an at diagram OAAilig diagram, and Figure 3 is a front view from OB in Figure 1. be. In these figures, seven frames 1 and 2 on the left and right sides of the printing press are shown.
A concave (1113) is rotatably supported on its circumferential surface and rotates in the direction shown by arrow C in the figure, and in front of it,
A pair of left and right plackets 4 are connected to 7 frames 1 by bolt SK.
. This pot 7 frame 6, T is formed in an L shape and has 9 substrates 6M.

The bearing cases 6b and 7b are installed upright at the end of the intaglio cylinder 3 side of the bearing case 6bK, and the bearing case 6bK has a ball bearing 1 attached to the bearing holder 10.
11 to restrict movement in the axial direction. The bearing case 7b also includes a ball bearing 12.
13 is fitted with bearing holders 14 and 15 and spacer 16 to restrict movement in the axial direction. 1T is an ink fountain roller having both end shafts 18 and 1s supported by ball bearings 9, 12, 13, and threaded end shafts 18, 19C) with nuts 20.
21 is connected to the ball bearing 9.13 2
2.2:4 threaded connection. i9. A gear 24 and a spacer 25 are interposed between the stepped portion of the end shaft 18 and the ball bearing 9, and a spacer 26 is interposed between the roller end face on the end shaft 19 side and the ball bearing 12. These insert the ink fountain 11 in the axial direction.
Movement is restricted. ★The ink fountain roller IT is
A nine drive gear (not shown) is installed on the frame protrusion of the end shaft 19 and is drivingly connected to the driving side, so that it has the same circumferential speed as the intaglio cylinder 3.
rotates in the direction shown by the arrow in the figure at a slightly lower circumferential speed than this, and inside it there is a pipe 2 that circulates hot water of about 50C entering from the inlet 2T and exiting from the outlet 28.
9 and a hot water passage 30 are provided. Incidentally, a hole 31 which is larger than the end shafts 1B, 19 is bored in the frame 1.2.

What is indicated by the reference numeral 32 is a fountain stay that is the same length as the main body of the ink fountain 4-ra 1T, and has an inclined blade receiving portion 321.
1 and a supporting part 32b which forms a T-shape and points downward. By pivoting the supporting part 32&I to the side plate of the stay 33 that connects the left and right pot frames 6, the structure shown in FIG. It is configured so that it can be rotated counterclockwise from the position shown and can be fixed at any position. 34 is a handle for rotating the pot stay 32. ! ! A long blade stand 35 is fixed to the inclined surface of the stay 320.Furthermore, the blade stand 35 is made of a thin steel plate, and has nine blades 36 whose tips are attached to the inside surface of the loaf 17. installed. 3T is a pair of left and right ink fountains which are formed into a triangular plate shape and constitute an ink fountain 38 with the blade 36 and the ink fountain roller 11;
Printing ink s■ is stored in the ink fountain 3. Further, the supporting portion 32bK of the pot stay 32 is screwed into the support portion 32bK of the pot stay 32 so that the tip of the pot 40 is in contact with the blade 38 so that it can move forward and backward freely.By moving each pot key 40 forward and backward, the blade 36 and the ink pot The gap with the roller IT changes, and the amount of ink 3s flowing out is g for each section! lJ
is configured to be

Further, a bracket 41 is attached to the left and right pot frames 6 at a position below the shaft support of the ink fountain roller 1T, and a bearing 42 having a tapered surface at the lower end is fixed to this by a nut 4s. And the left and right bearings 4
2, a rider loaf 43 is pivotally supported directly below the ink fountain 21T with its peripheral surface facing the ink fountain, and this rider loaf 43 is axially supported by a nut 44 on its end shaft. The gear 45, whose movement is restricted and is pivoted, is connected to the gear 2.
By meshing with 4, in S? It is constructed so that it is driven by the rotary pot and rotates at the same circumferential speed in the direction shown by arrow E in the figure. In front of you, Rider U-243.
A grooved cam 4@ is fixed to the other end shaft of the rider El-943 with its movement in the axial direction restricted by a nut 4T.
is configured to reciprocate in the axial direction by engaging the outer periphery of the cam 46 with a fixed force lower (not shown) and rotating. Further, an adjusting screw 48 is screwed into the screw hole of the pusher 4s attached to the left and right frames 1.2KI1 so that the tapered part of the tip faces the tapered surface of the bearing 420 and can be adjusted forward and backward. p, knob 4
The contact pressure of the rider fours 43 with respect to the p1 ink fountain roller 1T is adjusted by gripping and rotating the p1 ink fountain roller 1T. The SQ mark 51 is a scale plate and a pointer that display this contact pressure.

The four ink fountains of the nine ink fountain devices constructed in this way
On the T, the intaglio cylinder 3 and the O block, a rubber letterpress plate formed on the intaglio on the intaglio cylinder 3 and having a pattern thicker by S-Yang than the nine-year pattern is attached to the circumferential surface of the nine-pattern roller 52. are pivotally supported by the left and right frames 1.2 with their surfaces facing the ink fountain roller 1T and the intaglio cylinder 3. This batanro 252
is drivingly connected to the intaglio cylinder 3 by a gear and rotates in the direction shown by arrow E in the figure.
The diameter of the row 2 and the number of teeth of the slam roller 52 are set so that the circumferential speed of the intaglio plate on the intaglio cylinder 3 is 1.8 times faster than the circumferential speed of the intaglio plate on the intaglio cylinder 3.

The operation of the nine inking device constructed as above will be explained.

When the machine is operated, the rotation on the driving side is transmitted to the intaglio cylinder 3, and then to the batten row 252 and the ink roller 1T, so that the intaglio cylinder 3 and the ink fountain roller 1T rotate at the same circumferential speed. The pattern roller 52 rotates at a circumferential speed 1.8 times faster than the circumferential speed of the intaglio on the intaglio cylinder 3. Furthermore, the rotation of the ink fountain roller T is transmitted to the rider loaf 43 by the meshing of the gear 24.45. Both rollers IT, 43 rotate at the same circumferential speed. This rotation causes the p1 ink fountain 38 to
The ink 39 flows out from the gap between the ink fountain roller 17 and the blade 3, and when the ink fountain roller 11 carries it around and deposits it on the horse's surface, the ink 39 flows out from the gap between the ink fountain roller 17 and the blade 3. It is heated to 60℃S degrees. The warmed ink 3s is evenly leveled by a rider loaf 43 that reciprocates in contact with the ink fountain roller 1T, and is transferred to the letterpress surface of the slam roller 52.

The intaglio on the letterpress transfers to the intaglio surface on the intaglio cylinder 3 that is in contact with it, but the circumferential speed of the batten row 252 is 181 times the circumferential speed of the intaglio! p by being set to be faster.
Sliding is performed at the threshold between the circumferential surface of the one-pattern rod 52 and the intaglio surface, and the in-in medium 39 is slipped into the concave pattern portion of the intaglio. That is, the friend ink 3s, which has a lower viscosity than K and a lower transferability between low and low 2 by reducing the roller interval, is reliably transferred to the intaglio surface by this 9-filling action. In this way, the necessary and sufficient ink 3s is applied to the pattern part of the intaglio surface.
At the same time, by making the letterpress pattern slightly hotter than the intaglio pattern, a small amount of excess ink 39 also adheres to areas other than the concave WLO pattern. This excess ink 31B is wiped off by a wiping roller (not shown), and the ink remains only in the picture area, and printing is performed on the paper that passes between the printing cylinder and the impression cylinder. 9. The amount of ink per axial content sector my on the intaglio is adjusted by moving each pot key 40 forward and backward.

In this embodiment, nine examples were shown in which the peripheral speed of the pattern roller 52 was set to be 1.8- faster than the peripheral speed of the intaglio, but this speed increase rate was between 1g6 and 3- Experiments have clearly shown that an ink filling effect can be obtained if there is.

As is clear from the above description, according to the present invention, in an in-line device of an intaglio printing press, a slam roller having a relief plate on the circumferential surface is connected to the intaglio surface on the intaglio cylinder and the circumferential surface of the ink 1ip roller. By providing two curved surfaces, the number of rollers is reduced and the ink is supplied to the intaglio surface in a smooth state, which significantly improves the wiping effect.
By making the circumferential speed of the slam roller 1 to 3% faster than the circumferential speed of the intaglio, the surface of the slam roller and the intaglio slide, and the ink is rubbed into the pattern part of the intaglio, resulting in a decrease in viscosity and worsening of ink transferability. Since this is eliminated, there is no need to supply extra inlet, the amount of inlet inlet supplied and the amount of cleaning liquid used for wiping can be significantly reduced, and the second dust is significantly reduced.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of an inking device O for an intaglio stamp ms according to the present invention, and Figure 1 is a side sectional view thereof, JIK2
The figure is a cross-sectional view of a person from 15ill, and FIG. 3 is a front view from B in FIG. 3... No. Intaglio cylinder, 1T... Fist ink pot roller, 52
...Slamming four. License applicant: Komori Printing Machinery Co., Ltd. Representative: Masaki Yamakawa (and one other person) No. 3
Drawing procedure amendment (spontaneous) 1. Indication of the case 1982 Patent Application No. 195799 2. Name of the invention Inking device of an intaglio printing press 3. Person making the amendment Relationship with the case Patent applicant 6. Amendment Contents (11 “Nut 4” in lines 6 to 5 from the bottom of No. 7 of the specification)
It is fixed by 3. ” shall be amended as follows. ``The flange allows it to freely slide vertically with respect to the substrates ib and ybK, but restricts its movement in the lateral direction.'' (2) Same page 8, line 6, Or nut 41''.
Correct it as "a". (3) Correct the at diagram as shown in the attached sheet. (4) Correct Figure 2 in red on the attached sheet. that's all

Claims (1)

[Claims] A slam roller, on which the letterpress is attached, is provided so that its circumferential surface is in contact with the intaglio plate attached to the intaglio cylinder and the ink fountain roller, and the slam roller has a circumferential speed that is 1 to 3 seconds faster than the circumferential speed of the intaglio plate. An inking device for an intaglio printing press characterized by being rotationally driven by.