JPS58173662A - Ink duct device of printing machine - Google Patents

Abstract

PURPOSE:To perform the adjustment and initial setting of an ink delivery amount by the rotation of an adjusting cam and an eccentric pin, by engaging the pin at a base end part of a duct stay with an arc shaped long hole of the adjusting cam, which is coupled in the eccentric outer circle of the eccentric pin. CONSTITUTION:Before printing work, the ink duct 7 is filled up with ink 6, an adjusting lever 17 is lowered, and a scale 20 is aligned with zero. Then the pin 16 is engaged with the other end of the long hole 15. A duct key 9 is approached to the tip of an ink blade 4 by the eccentric pin 13. When the eccentric pin is rotated, the duct key 9 goes back and forth. When an ink film of the outer surface of a duct roller 1 becomes zerio, the eccentric pin 13 is fixed by a bolt 11. After the zero adjustment, the machine is started. When the adjusting lever 17 is moved in correspondence with a picture pattern, the adjusting cam 14 is rotated, the long hole 15 is moved along the pin 16, and the duct key 9 is separated further by the eccentric pin 13. The ink blade 4 is elastically returned, and the interval between the blade and the outer surface of the duct roller 1 is widened. Thus the ink delivery amount is adjusted as shown by the scale.

Description

DETAILED DESCRIPTION OF THE INVENTION In the present invention 1111111, the amount of ink stored in the ink is discharged from the gap between the large ink t* roller 1IllrjIJ and the tip of the ink blade.

Sheet-fed or rolled-paper rotary stamps! The II machine is equipped with an inking device that supplies printing ink to the plate attached to the plate cylinder, and this inking device has a large amount of ink to store,
A fountain roller that rotates within the ink fountain to attach ink to eight surfaces and rotates around it, and a group of rollers that uniformly transfer ink from the fountain roller 810 to all directions and adhere it to the plate surface. It has been la. The amount of ink is determined by the amount of ink between the pot roller, the ink blade which is supported by the pot stay that connects the machine frame on both sides, and whose tip is in contact with the circumferential surface of the 20-mm roller, and both longitudinal ends of the ink blade. It is a container with a triangular cross section surrounded by an ink fountain that is closed, and is designed to adjust the amount of ink dispensed by changing the gap between the tip of the ink blade and the surface of the fountain roller 11. There is.

This kind of ink! ! Conventionally, the adjustment device generally adjusts the circumference of the ink blade and the pot roller by rotating several pot keys screwed in parallel in the longitudinal direction of the pot stay with the tip facing the tip of the ink blade. The gap with the surface is set partially for each section, but in the case of screw-type pot keys like this, there are some parts that require fine adjustment, and most parts that are only used when attaching and detaching. All screw pitches are the same, and the amount of advance and retreat of the pot key relative to the number of rotations is the same. Therefore, if the screw pitch is set finely to match the 9-knot, there will be ink scum and J on the sliding part of the pot key. ! When cleaning when I* has invaded, it is necessary to turn the pot key with a fine thread pitch to attach and detach it, which not only takes a long time, but also makes it difficult to return it to its original position after cleaning. It is extremely difficult to do so. However, if the screw pitch is set coarsely so that it can be easily attached and detached, Il! A problem occurs in that adjustment cannot be made.

Therefore, as an alternative to this, the pot key is slidably supported on the pot stay, and a cam with a cam surface facing the shaft end is provided on the end surface of the pot, and the pot key is moved forward and backward by rotating the cam. However, all of these devices used a cam only in the direction of pressing the pot key, and the elastic force of the spring was used to return the pot key. The runner-up was poor reliability when dust or the like adhered to the sliding surface or when oil or ink solidified, and operability worsened when the spring force was increased.

In addition, the ink output amount adjusted with the pot key generally requires an accuracy of about 0.021 in terms of ink film thickness, but even if the processing accuracy is maintained within this range, in the case of a single blade, Due to the characteristics of the blade, its supporting structure, and the pot roller, it is necessary to adjust the time during assembly. On the other hand, with the conventional P1 node device, it is difficult to assemble the initial setting of the time, and even if a scale is provided to display the adjustment time, the a
It had the disadvantage of having low Reliance 1.

The present invention is based on the above-mentioned points, and has nine bottles installed at the base end of the pot stay, which are connected to the arc-shaped elongated holes of the partial cam paper-covered in the eccentric outer circle of the eccentric bottle. In addition, it is possible to adjust the ink output amount by the circumferential movement of the loop one-section cam and to set the ink output amount by rotating the eccentric pin, thereby increasing the ink output amount adjustment and improving reliability. The present invention provides an improved ink fountain device for a printing press. Hereinafter, five embodiments of the present invention will be described in detail with reference to the drawings.

1 to 4 show an embodiment of the ink printing device according to the present invention, FIG. 1 is a sectional view thereof, and FIG.
The cross-sectional view, W, and 3 are a front view from B of FIG. 1 with a part of the cover opened, and FIG. 4 is a front view and a side view of the adjustment cam. In the figure, in front of the pot roller 1 which is rotatably supported by machine frames on both sides and rotates in the direction shown by arrow C in the figure, there is a main body 2a whose both end surfaces are fixed to the inner surface of the machine frame, and a main body 2a that is connected to the main body 2a. A support stay 2 consisting of 1!1 bearings 2b fixed with bolts so as to protrude forward at regular intervals is supported between the frames of both lits. On the slanted upper surface of this pot stay 2, there is a
A long blade stand 3 is fixed integrally with bolts (not shown), and above (3) there is an ink blade 4 of the same length as the blade stand 3, which is made of an elastic thin steel plate. , is fixed so as to face the front surface of the At pot roller 1. 1. The 8 sides of the pot roller 1 and the ink blade 4 are removed, and the round gutter-shaped 5ov4s part is blocked by the triangular ink well 5, thereby storing ink for printing! IT is formed. As the ink flows through the SFi pot opening, the ink flows out from the gap between the surface of the roller 1 and the tip of the ink blade 4, which is indicated by the symbol t in the figure, due to the wedge action between the surface of the ink blade 4 and the tip of the ink blade 4.
The structure is such that an ink film is formed on the surface.

In the main body 2 of the pot stay 2, a stepped key hole S consisting of a large diameter part and a small diameter part corresponds to the center of each bearing part 2bC) and forms a 4'5 angle with the ink blade 4. A quantity key 9 is slidably supported in each key hole 8 with its tip facing the tip of the ink blade 4. This pot key 9 has a flange 8@ that fits into the large diameter part of the key hole 60, and a bifurcated support piece 9b that protrudes from the flange 11a. The ink blade 5 is biased in the direction relative to the roller by a compression coil spring 10 loaded in the roller.

On the other hand, the bearing 2ha of the pot stay 2 is formed in a secant shape by a bolt 11], and a bottle hole 12 is bored therein extending in the direction of the axis 1 of the pot key 9. Reference numeral 13 denotes an eccentric bottle which is rotatably supported in the bottle hole 12 and fixed to the bottle hole 12 by a secant line with a bolt 11. It is eccentric by an amount indicated by reference numeral 11. Moreover, at one end of the eccentric pin 13,
When loosening the bolt 11 and rotating the eccentric pin 13, a corner WA is provided to apply a wrench, and by rotating the eccentric pin 13, the eccentricity of the pot key 9 in the axial direction can be adjusted. is configured to be regulated. Furthermore, an adjustment cam 14 formed in a circular* shape is rotatably fitted in the eccentric outer circumferential circle having the axis F1 of the eccentric pin 11.
This is provided with a long hole 15 formed in an arc shape concentric with the bottle hole, and the bottle 1@ supported by the support piece 9b of the bottle key 9 is slidably engaged in this long hole 15. has been done. tfc, the adjustment lever 17 is screwed into the screw hole 14aK of the adjustment cam 14, and this adjustment lever (-17 is
Both edges are fixed to the main body 2 of the pot stay 2 and the bearing 2b, and protrude outward from the through hole 19 of the cover 18. By doing this, by gripping the adjustment lever 17' and rotating the adjustment cam 14, the adjustment cam 14 is rotated eccentrically by the eccentric action of the eccentric pin 13, and the engagement between the elongated hole 15 and the pin 16 is adjusted. In this case, the amount key moves back and forth in the axial direction, and the amount of movement is displayed on the cover 18 by a nine scale 20. What is generally designated by the reference numeral 21 is a brake in that softly brakes the rotation of the adjustment cam 14, and includes a screw 22 screwed into the bearing 2b.
and a synthetic resin piece 23 loaded into the screw hole,
A compression coil spring 24 biases the piece 23 toward the adjustment cam 141Ill.

The operation of the ink fountain device configured as above will be explained. Ink comes first for printing work! After storing ink 6 at 17, lower the adjustment lever 1Tt from the position shown in Fig. 1 and move it to scale 2.
When the pin 1 is set to the zero position, the pin 1 engages with the other end of the elongated hole 15C, and the eccentric action of the eccentric pin 13 moves the fountain key 9 in a direction approaching the tip of the ink blade 4. In this state, when loosening the bolt 11t and turning the eccentric pin 1 with a wrench, the pin 16 and the elongated hole 15 are engaged by the eccentric action of the eccentric pin 13.
advances and retreats. And Tsubo Loan II! When the ink test on side ii becomes zero, it means that the zero adjustment is complete.
Stop the rotation of the eccentric pin 130, and tighten the pin 11' to fix the eccentric pin 13.

After performing the zero p+ adjustment in this way, start the machine, align the adjustment lever 17 with the pattern of the printed material, and rotate it from the zero position to the predetermined scale. The elongated hole 15 moves along the pin 16. Therefore, the amount key 9 moves in the direction away from the tip of the ink blade 4 due to the eccentric action of the eccentric pin 13, and the ink blade 4 elastically returns to the position where it is between the circumferential surface of the pot roller 1.
By expanding ll1t, the ink output amount is adjusted to a predetermined amount. After adjustment, the adjustment cam 14 compression coil spring 24 is activated and is softly braked by the frictional force of the nine pieces 23, so that it does not rotate.

In this way, all the pot keys 9 are rotated by the rotation of the eccentric pin 13.
The zero adjustment is made with high precision without any variation by the distance m, and then the scale is set to 1 by the engagement between the long hole 15 and the bottle 16! The amount of ink discharged through the holes is adjusted. Incidentally, the amount of ink output can also be roughly adjusted by rotating the eccentric pin 13t.

According to the present invention, as in 911,
In the ink amount device of a printing press, a pin provided at the base end of the pot stay is engaged with an arc-shaped elongated hole of an adjustment cam fitted on the eccentric outer circumference of the eccentric pin, and zero adjustment is performed by rotating the eccentric pin. Alternatively, by performing coarse adjustment and finely adjusting the amount of ink output by rotating the knob cam, both the forward and backward directions of the pot key are regulated by the engagement of the pin and the slotted hole. Even if there is resistance to the sliding movement of the pot key, the forward and backward movement is not hindered, and there is no error between the ink output amount and the scale display, which significantly improves the reliability of the device, and the cam The elongated hole of the adjusting cam that acts can be set to any shape, so you can adapt it to the usage conditions! Adjustment performance is improved. In addition, the initial setting of the time, the zero setting during use, and coarse adjustment can be performed very easily and with high precision by rotating the eccentric bottle when assembling many pot keys. reliability is improved.

[Brief explanation of the drawing]

Figures 1 to 4 show an ink fountain device for a printing press according to the present invention! ! An example is shown, Figure 1 is the IfI side view, Figure 2
The figures are AAQii1 of Figure @1, Figure 3 is a front view from OB in Figure 1 showing the cover partially open, and Figure 4 is a front view and an am view of the adjustment cam. 1... Pot roller, S... Pot stay, 2b...
・Bearing, 4...Fist/ink blade, 9...Fist pot key, 13...Eccentric pin, 14...Adjustment cam, 15
...Long hole, 16...Bin. Tokuken all Ia person Komori Printing Machinery Co., Ltd. agent Masaki Yamakawa (1 person)

Claims (1)

[Claims] An ink blade fixed to the pot stay with its tip aligned with the m-plane K11lit of the pot roller, and the tip 1 of this ink blade.
The IN group O quantity keys are slidably supported on the cocoon recording stay with one end facing 1, and the 111 note stay extension is located in each of these jars*-0@one direction. An eccentric bottle is rotatably supported on a shaft and is provided with an outer circumferential circle that is eccentric with respect to a shaft support lI, and is formed so that the eccentricity of the quantity stay can be adjusted by an amount of tliii in the direction of the ring edge by the rotation of the eccentric bin. 1. An eccentric bottle and a nine-section cam having an arc-shaped elongated hole mounted on the eccentric outer circumference of the eccentric bottle O and engaging with the quantity key base end IIO bottle.
Ni*Shotoku Mark 5III! ink equipment.