JPS58158256A - Method of operating printer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This invention relates to a method of operating a printing press.

In particular, it relates to a printing press using a central impression cylinder with a plurality of printing decks arranged around its periphery.

The prior art to which this invention is applied is US Patent No. J, OII
/, 9A No. 7 specification. This is it.

The central impression cylinder receives ink suppression of approximately the same color from six different printing decks, three on a side, as is relatively common in printing technology in this context. Typically, each deck has a plate cylinder arranged to press a particular pattern on the web supported by the impression cylinder. The ink, or color, is transferred to the plate cylinder supporting the plate forming the desired pattern by a transfer cylinder, commonly referred to as a 17-nilox roll. Therefore, three anilox rolls are arranged on each deck for pattern development, or "single repeat," as is commonly called by those skilled in the art. The prior US patent deals with a mechanism that brings together various dex cylinders to effect printing. but,
This is a relatively minor problem when compared to the problems faced by those skilled in the art in replacing plate cylinders. It will be obvious that whenever one copy is changed, the plate cylinder itself is replaced.
The main problem raised in this conversion is achieving registration of the various colors and patterns; often large and expensive machines are needed.

This can be stopped for a period of time during which the printer adjusts the various decks to bring them into registration.

The difficulty of implementing registration according to modern technology is evident from the following sequence. In the first step, plate cylinders are attached to all six decks.

There are usually three of these at -111, with the first deck at the 10:30 o'clock position, the first deck at the o'clock position, the third deck at the 7:30 o'clock position, and the third deck at the 7:30 o'clock position. is at the 30 minute position, the third deck is at the 3 o'clock position, and the sixth deck is at the 1 o'clock and yo minute position. The sequence for achieving registration is that the printer presses a button to normally start the seventh deck so that the plate cylinder and anilox roll are brought into approximate gear engagement. It will be understood that the central impression cylinder is usually provided with a large gear called a pull gear to drive the gear train of the plate and transfer cylinders of each deck in a row.

Therefore, the first step is to mesh the anilox roll gear with the plate cylinder gear and the first plate cylinder gear with the pull gear. *To achieve wheel meshing, the gears on the first plate cylinder are increased in mesh a little until proper meshing is achieved on the teeth of the pull gear. Also.

These gears are helical gears that require fine adjustment, so
It will be appreciated that the meshing of gear teeth cannot be easily captured by eye. In the same way, the anilox roll gear is slightly increased in mesh with the plate cylinder gear. Thereafter, the rolls of the seventh deck are locked in place and moved slightly into the suppressed position. This is usually determined by inserting a KJ, /7 to 0 (Q, /Jj inch) feeler gauge between the surface of the plate cylinder and the surface of the central impression cylinder; Needed. The same feeler gage action is applied to both ends of the anilox roll to position the anilox roll in the proper compressed position. Registration marks are then applied to either the impression cylinder or the web when required. Even if the registration marks are visible on the web.

It is attached to both sides because it may slip against the impression cylinder.

The next step involves indexing the impression cylinder until the registration mark is aligned with the contact point of the first plate cylinder to the central impression cylinder.

The plate cylinder and anilox roll of the first deck are then placed in a meshing relationship and nudged into a suppressed position using the feeler gage process described above. At this time, since the first plate cylinder is not locked with the gear for the plate cylinder, the first plate cylinder can be rotated until it is aligned with the registration mark placed in front of it. That is, the pattern of the plate cylinders of the first deck is matched to the pattern provided by the plate cylinders of the first deck. This same sequence of steps performed on the first printing deck is also performed on the remaining printing decks, i.e., the third to sixth printing decks, and
It will be appreciated that visual observation of the printed pattern must be made at each step to ensure that each of the compressions performed by the two decks is accurately registered. This results in waste of time and waste in high speed printing machines with large printing capacity. This is especially true when short-term operations are carried out, since a changeover from one operation to another is required during the changeover process of the operation just described.
There is NK.

An obvious solution to the registration process.

The central impression cylinder and the plate cylinder are provided with registration marks corresponding in advance to a given copy.

However, this is rarely successful in practice due to the difficulty of using the large number of marks required to cover the area of copying.

In addition, since the gear teeth are relatively small and it is difficult to distinguish the misalignment of l/da 0 or l/coco values, the wrong gear teeth often mesh with each other. In this regard, non-normal spur gears further complicate the problem of ensuring that the teeth of the gear are selected to mesh with the correct tooth of the gear that mates to align with the registration mark presented. It should be understood that it is a helical gear.

A method of matching registration marks is disclosed in French Patent No. 74.
! ! 7/? Although it is shown in the specification of No.

This method cannot be applied in practice. Delete this 7 lance patent,
It teaches that the registration marks on the first plate cylinder and the central impression cylinder should be matched after the gear teeth are engaged. this is,
K does not really solve the problem because it is difficult to know that the teeth of a helical gear are pre-selected so that the teeth of a helical gear match after meshing.

The present invention solves the above problem by orienting the plate cylinder gear in a predetermined direction and stopping the machine after this orientation. This eliminates the substantial time loss that is a feature of today's practice, and casts a controlled atmosphere in which registration is sought and adjustments or orientations can be made.

Also, when the 1st edition body tooth army is attached to the plate body.

To do so with such precision that the plate cylinder gear can be meshed into meshing engagement with the pull gear by linear movement of the printing deck alone without the disturbed and uncontrolled axial movements proposed by other means, such as in the French patent mentioned above. I can do it.

In particular, the method of the invention uses a registration device having a sleeve and a collar and gears that are mutually adjustable with respect to a machine stop and a predetermined position on the plate cylinder axis, the registration device being mounted on the plate cylinder axis. The first plate cylinder provides not only accurate gear meshing but also, most importantly, accurate registration. It is now understood that there is always a small adjustment in registration after the printing press has been started by small adjustments in the rotational position of the various plate cylinders, which can be accomplished by the axial sliding of the helical gear. Should.

When operated by a skilled printer, the required registration is only such that small displacements of the various helical gears allow the printer to finish the registration process.

The invention will be explained below with reference to the accompanying drawings.

In the central compression printing section in Fig. 7, there are four printing decks arranged symmetrically around the central impression cylinder λ. /! L, ko/kl, ko10. There is ko/(1,,2/@.

The printing machine is supported on a conventional frame 1.

The paper sheets 23 to be fed are placed on and firmly in contact with the surface of the central impression cylinder, and the four printing decks -/, 2/IL
, Ko/b, J10. Ko/1. ．． It is rotated through 2/11 and finally comes to the richness. - Often used between color dryers, for example color decks, but not shown for clarity. Each color deck is made of similar members each having a plate cylinder mounted on a movable sub-frame 14 that supports a bracket.

The brackets can be moved independently from the sub-framework and support the anilox roll λg and the fountain roll ade. Each bracket γ supports an ink fountain (not shown) mounted directly below each fountain roll t. The details of the Confucian deck structure are shown in Figure 1. Since each color deck is made of the same parts, each part is given the same reference numeral.

Where distinctions need to be made between members of different decks.

For example, Detsukiko/1 at the 7:30 position in Figure 1
) is marked with a side sign such that the plate cylinder is indicated by kojTh.

The bracket core Fi7 associated with each sub-framework 4 is attached to the frame extension 30 and is movable relative to it. At the printing deck λ/ of l[/.

This movement is along the line 7/, and the other decks are along the pair -, such as the line j10 in the deck/at/C.

The operations and mechanisms associated with the linear actuation of the various dex cylinders into the repressed position will be explained later with reference to FIG.
Refer now to diagram g3. Print cylinder λ! A schematic cross-sectional view of is shown together with the associated mechanism for its operation.

Print body! has three journals or shafts which are integrally connected and are normally used to support the gears which rotate the plate cylinder in synchronism with the central impression cylinder.
Reference numeral 3J indicates a helical gear associated with the plate cylinder 2j, and reference numeral 3da indicates a part of the pull gear fixed to the central impression cylinder. Another pair of gears attached to the plate cylinder Jj for slightly different operation.
and the central impression cylinder J- are closely related. Conventionally, a 7-lexograph printing machine is provided with a lθ pitch gear and a // tabich ring gear.

Although the gears are not different, they are made for repeated operation of different gears, as is well known to those skilled in the art.

The registration device inserted between @3 and the pull gear 741 and supporting the plate cylinder gear 3J is marked J! It is indicated by. This registration device J! is removably mounted on three shafts and can be placed in the desired state or shape away from the machine to actually speed up the conversion or set the time for different copies. The contrasting color takes 73 to 30 minutes for the color to fade. Approximately an hour and a half to three hours or more with set time.

Depending on the consumption time and the condition of the set time.

The new method allows machine stoppages to be set while printing is taking place, substantially increasing printing time.

Registration device J! is shown in cross-section in FIG. 3 and has a number of generally concentric members.

The inner sleeve J4 is slidably attached to the shaft 3 and is provided with an outer spline 37 shown in the right-hand portion of the drawing.

Figure D shows the registration device 35 and the three shafts in a perspective view, and axis J- is schematically shown at the left end portion of Figure D. The reference figure schematically shows the left hand portion of the registration device 3j, and the concentric member forming the gear is omitted.

Returning to FIG. 3, reference numeral Jl indicates the first sleeve.
The first sleeve is shown with internal splines to mate with the outer sleeve 37 of 'J6.

The movement of the sleeve Jt relative to the sleeve 36 is therefore limited in the axial direction and is used when the machine is set up for fine adjustment of the registration device. For example, the registration used by the novel method of the present invention is JJ to gear J
axially aligned within #. Sliding of the sleeve 3t relative to the sleeve J411C moves the gear 33 to the right or left depending on the case, the gears JJ and 34I- are helical gears, and the central impression cylinder here moves the pull gear 71 fixed to the central impression cylinder 2-. Since there is no relative rotational movement between the gears 33 and 39, the plate cylinder is located closer to the center impression cylinder than the central impression cylinder. The gear 33 is connected to the sleeve 5tK by means of the bolt 3D, causing a slight rotation of the gear 33.
Q It can be seen that it is removably installed.

A particular object of the invention is to provide a registration device, in particular to mount the registration device 35 to a similar reference point on the plate cylinder J and to ensure that preselected teeth of gear JJ are pulled between the teeth of both sides of JJ. to orient the gear 33 relative to a reference point outside the machine so that it can enter a preselected valley of the machine. As mentioned earlier, this is practically impossible to do by looking at the machine, such as lining up a reference point such as a damaged wire on the central impression cylinder or associated gear in the plate cylinder. Pull gear 3, which is a relatively small tooth, in this case a tooth with an angle of "it" that is impossible to match visually.
The orientation of the registration device 3j is then considered so that the gear J3 is properly positioned to mesh exactly with the predetermined valleys between the teeth of the gear. continue.

The means used to appropriately position the blue group are discussed.

Print body! Regarding the appropriate positioning of the registration device J5,
First of all, it should be understood that the plate cylinder j is provided with a plate IIo (see FIG. 3) which is precisely attached to the plate cylinder j with respect to an imaginary mark line. In this case, the marking line is key #I4 on the shoulder of the shaft! A line 411 that bisects -
It can be thought of as (the left hand part of Figure DA). Keyway 4I
λ can also be seen in the center left hand portion of Figure 3. As stated somewhat differently above, the objective is to position the precise teeth required for registration in exact accordance with the imaginary score line 4I/ie, the key'#ll4I. More precisely, the positioning of the plate cylinder is determined by the various deck keys required to have the center of the helical teeth aligned as closely as possible to make the fine adjustments mentioned above. They have different angular relationships with the center of the central impression cylinder J-.

This is further complicated by the presence of phase differences between the various decks. Since the underlying purpose is to have the various cylinders of the various decks suitably oriented, all can be brought into printing engagement at the same time and must be configured for this phase difference. However, before discussing the first deck where one phase angle is considered to be zero, that is, the deck/a
It is believed that consideration of this will help in understanding the present invention. Regarding this deck J/ILK.

It will be appreciated that the line of operation along line 3ta (center left hand portion in FIG. 7) K passes through the center of central impression cylinder 22.

In order to direct the registration device 3j associated with the plate cylinder of each deck, the registration device 3j is adjusted as shown in FIGS. 3 and 41.
The left-hand part of the device JI is used in conjunction with the setting fixture shown at number j1gl. This setting installation ^ is code 1
．． 7 and can be seen at various y#1 in the 6th j1izMJ.

The set plywood board J has a base plate and a support base 3 mounted on this plywood board (see 4th g). The support stand 3 is provided with a bearing (not shown) and supports the shaft J 1 corresponding to the 3 shafts of the plate cylinder, and the shaft 32'
is provided with a keyway 4I facing downward in FIG. 6.

Registration device 3 on 3 shafts 1! is removably attached.

Referring to FIG. 7, which is a perspective view of the setting fixture 3 with the cover removed, as seen from the side opposite to 4g, the reference numeral 414 is
For the purpose of a support device to rotate the axis Jco1, a stand I [Jitei and support stand da! It shows a pair of brackets provided between them. For this purpose, a worm tooth 7 is provided on the shaft JJ', and a worm 4 provided on the worm shaft 4 is provided on the shaft JJ'.
It meshes with Ig. Axis 41 as shown in the atsushi diagram? There is a steering wheel on the right hand end! 0 is provided, so that the rotation of the handwheel S0 cooperates with the worm 4It and the worm gear shaft 7 to rotate the axis JJ'f, and thus rotates the registration device Jj.

As shown in No. 7 #A, there is a counting drive gear on the left hand end of the shaft t! l is provided and it is a counting driven gear! It meshes with 1. Counting driven gear! This is the counting device attached to bracket No. 6! It forms part of tJ. Therefore, the rotation angle of the shaft Jco1 is represented by the counting device jJ @ In the operation of the setting fixture 41J, the counting device! J is set to zero, and in this state, the handle wheel jO is positioned so that the keyway 4IJ' of the shaft 32' is positioned facing downward. After that, the registration device J! is sleeve J4
Slide it in the axial direction and color it! It is slid on the axis JJl by roughly aligning the pin J of S with the key #l Jl (see Figure 3). The left-hand part of Fig. 3 is the plate cylinder I.
The sleeve J6 at the end adjacent to the collar J3 can be rotated.
I support this color! It is shown that a bin SIE is provided at j.

This is even clearer from the jls diagram, where the sleeve 31 has a radially enlarged part! You can see that B is set up.

This expansion! 6 is color! ! is rotatably supported. Pin 3 is enlarged to fit into key groove ko 1! 4, and for this purpose the enlarged portion 16 has #! As shown in the center of the figure, an arcuate groove S7 is provided.

The registration device Jj is attached to the 11 shafts J and the pin is fixed! Precise positioning of the preselected teeth of gear J3 is performed after the gear is extended into keyway 4I-0. It is clear from the upper center of Figure 3 that this is due to the center of the tooth.
The center of a particular tooth T is denoted by τC. The purpose of this state of the method of the invention is to direct the center Tc of a particular tooth T exactly to the imaginary mark 11i4It, so that the plate cylinder 2! The reason is that the teeth of the bull gear 3da and the plate cylinder gear mesh accurately at a displacement of a (see the center right part of FIG. 1).

For this purpose, the setting odor J is provided with a gauge block device 40. In particular, a pair of gauge blocks 4/, 4/' is provided for use with one odor JJ, 3J'. , only one of these gears 33, 33' is used in a particular device. As previously mentioned, a pair of pull gears with different tooth configurations are provided on the central impression cylinder JJ, and when one pull gear J44 is selected for the printing operation, the plate cylinder gear 3J is used. Gauge block 6
It will be understood that it is measured by 1.

The gauge block 6/ is connected to the gauge block device 4 for vertical operation via a gear train and linkage driven by a further handle wheel 4J shown in the upper part of FIG. 4.7.
It is set to 0. When the gauge block 6 is raised by the rotation of the handle wheel 6J, the gear is placed at an accurate position between the positioning columns 43.4% of the gauge block 61.
7J is located. This is allowed for the registration device 3S by the arcuate groove j7 shown in the central part of the figure.

In particular, gear 33 is connected to sleeve J by means of a spline connection between sleeve Jt and sleeve J4, which supports gear J3.
It is fixed at 6. On the other hand, the collar 11 is fixed in a predetermined position by the pin S limited in the keyway dowel 1. The slight rotation angle of the gear J3 due to the groove j7 of the sleeve J6 is caused by the slight rotation angle of the gear J3 when the gauge block 6/ is moved upward. The positioning post 6 until the gauge block 41 moves to the end of its upward movement when the positioning post Aj, 41 is fully in the valley between the teeth T.
The teeth can be held at the same time by 3°by. At this stage, the center To of 5tlaT is exactly aligned with the imaginary indentation line lIl. After that, Color J! Opening bolt 4I
The enlarged portion 16 of the sleeve 36 is tightly attached to the collar kl so that it does not move (Fig. D). This is achieved by the color !S splitting like a ho (center part of the diagram).

As mentioned above, if the registration device is attached to the plate cylinder of the register, no action is necessary. However, this is not the case for the plate cylinders of the remaining decks, which have different phase states. This is clear from the description of FIG.

For the first deck or deck al& of FIG. 1, contact 46 appears to be located on deck movement 111JllL. That is, the contact point 44 is connected to the plate cylinder JjL and the central impression cylinder 2.
0 but the state is different as exemplified by the %jlJ deck 21b at the pressure point between o! ! To ensure that point 6 is angularly offset from the deck movement line Jlb and the specific tooth of the plate cylinder gear meshes between the teeth of the pull gear 3, the plate cylinder should be marked must be rotated out of alignment. If not, the deck movement m5ib+ce will be shifted and will not coincide with the associated valley between the teeth of the pull gear 3. The required rotation can be precisely determined trigonometrically.One of the factors necessary for adjusting the rotation of a 0-tooth single 33 is that the movement aJ/1) of the third deck J/1) is / with respect to the horizontal line. j', which is clearly shown in the iris 1 diagram.

Print body! Another difficulty arises due to the mismatch between the center of b and the center of the central impression cylinder JJ. This means that when the gear teeth of each plate cylinder engage, there is an additional small angle of rotation of the plate cylinder between maintaining a value of approximately /J0 and full engagement. Also, this can be calculated accurately in advance. Therefore,
From the use of geometry and trigonometric functions, it is possible to predetermine the exact rotation angle, or phase, of the gear associated with the version jIilatb, which can then be used as a steering wheel! The rotation of O can be introduced into the setting fixture 4!3 so that the counting device 33 represents the exact angle of rotation required.

Especially the collar fastened to sleeve J4! By j
It is pushed up to the upper position of the gauge block 61 and engaged with -T. The 7'% steering wheel SO is then rotated to rotate the registration device J5 in the required direction as indicated by the counting device jJ. The particular tooth τ required to be located at the contact point 67 is now in this position and forms a locking collar with a restraining device to maintain this position before being attached to the register 32.

Referring now to FIG. 3, it can be seen that the right-hand end registration device is provided with another collar 6t rotatably mounted on the sleeve 3t. The collar 6t is provided with a stop 69, as shown in the lower hand portion of FIG. 3, which is rotatable into mating engagement with the rounded end of the plunger shaft 0 (II!, FIG. 4). The plunger device 7/ is pivotally mounted on the base plate ++ and is pivoted into a position mating with the stop 69, so that when the collar 6g is rotated, the plunger axis O
The end of the ball enters the stop 1 de. A part of the collar 6t is broken, and the 0 key groove II and the imaginary scribe line are provided with 7 lock bolts (Fig. 3) that are tightened to tighten the collar 4Ef to the sleeve 3t. A reference stop is provided to orient a particular tooth T to a predetermined angular position relative to the stop when I coincides.

A similarly configured plunger is attached to each plunger.

It is provided in the frame r such as ko/a. This plunger is schematically indicated by an arrow 3 in the upper right part of FIG. 2 relative to the first plunger. Therefore, on each plate cylinder of each deck, the fixed plunger device associated with each deck is stopped in a reference position 6! Since it is used to hold the marking 114'/, the key groove reference and the specific @T, the code 7
As shown by 3, it is in an appropriate angular relationship with respect to the stop 69. After this, the plate cylinder provided with the registration device 3j, which is preset at the same predetermined angle, is moved to the sub frame λ4.
and is rotated until the ball of the frame plunger J engages the stop 69. After the teeth of gears JJ and 31I are fully engaged, the plunger device
Accurate gear meshing and correspondence, which is subjected to minor adjustments by the printer during actual operation, is provided by the method lζ of the invention. The plate number 0 on the plate cylinder Jj (Fig. 3) is the marking on the plate cylinder Ill/
(Figure 9). The registration device Jj is precisely positioned relative to the marking [14'/] by a pin j4I that enters a keyway 41 associated with the axes 3 of the plate cylinder 2s. pin! After the holder is positioned in the keyway holder, another collar 7II (Fig. #11) is placed on the axis 3.2 of the plate cylinder by the registration device J! is tightened to hold it in place. The collar is split at the collar 7-tei beam, and a lock nut 76 is provided (
(see figure). This color? 4I is loosely attached to the left or inner end of sleeve 36. The sleeve 34 has a grooved notch 7, so that when the lock nut 4 of the collar 7 is tightened, the collar 7 tightens the grooved end of the sleeve J to the shaft J. do. Therefore, the registration device and the most important gear 3J are aligned with the keyway dowel, and the markings III and I are in a fixed angular relationship with respect to the plate IIO of the plate cylinder 2S. By means of the specific tooth T in a predetermined angular relationship with respect to the frame reference, i.e. the plunger device 73, and the cut line 4+/, the plate cylinder is moved along the operating line 7/, 77.
& etc. to bring about the engagement of the cooperating central impression cylinder with the preselected teeth of the plate cylinder gear by properly orienting each plate cylinder to achieve sight alignment between all decks. can.

Examples of various photo repeats used in flexographic printing machines are shown in Figures II-I. In all of these figures, the pull gear 3 (Figure 1/Figure 1) is a gear with 10 diameter pitch and 100 teeth. The plate cylinder gear is for a different repeat, and is located at the position occupied by the deck 3 of deck 3 whose operating line is indicated by J/1). It is a design choice and convenience to locate the plunger device J at the bottom of the registration device 3s rather than at an obtuse angle to the line of actuation in the deck 2/b.

Therefore, during setting and subsequent plate cylinder installation, the tooth T of the gear, the key 1 and the holder 1 are rotated at an angle with respect to the plunger device 3, which is the reference sign, and this rotation is J
, rijlL, riJb, 7Jc, etc., differences in contact points 46 to 67, etc., and most importantly, differences in effective repeat length between decks. The predetermined angle includes these additional differences when the angle is recorded in the stitch count device 53.

The table below lists various values to show the differences in stop positions in different repeats.

One additional orientation is performed on the machine prior to engagement of the various decks with the central impression cylinder. l is pull gear 34! The other step is to position the anilox roll 2t.

In order to better understand how such positioning is applied to all operations, the construction and operation of a typical deck will be explained with reference to deck 1 shown in FIG.

As mentioned before, each deck such as the deck col of %IIN/ is connected to the plate cylinder 2 engaged with the two impression cylinders, the anilox roll cob, the fountain roll cob, the sub-frame roller and the first sub-column. It has a bracket body which is a frame.

An ink fountain (not shown) is mounted just below the rubber-seeded fountain roll nub which facilitates full coverage of ink for transfer to the anilox roll 21. The air cushions 7I individually variable push the fountain roll nubs into contact with the anilox rolls 21. In the described printing deck, the bracket housing the guide 7 is pushed and slid toward the stop to by the action of the cylinder 1/ through the link shown by the dotted line. The plate cylinder 2S can be moved independently from the sub-frame roller to release contact engagement with the cylinder 2j, so that when the printing press stops running, the plate cylinder 2S continues printing until the plate cylinder runs out of ink. After a delay of , the sub-frame 6 accommodated in the guide l- can be pushed and slid towards the stop Ir3 via the link shown by the action of the cylinder tq. The operation of the bracket λ7 of the sub frame roller and the S sub frame pulls all supplementary rolls out of contact with the substrate W located on the central impression cylinder, thereby stopping printing.

The rotatable collar 15 on the screw t6 can be positioned such that a gap it forms the amount of actuation performed by the action of the cylinder tri through the link. Similarly, the collar it on the screw lde forms a gap 90 which determines the movement of the two sub-frames by the action of the cylinder tp via the link.

When the bracket head is moved outwardly until the collar 22 contacts the stop 5, it forms a rearward position that is used as a reference for positioning the anilox roll. When the secondary frame roller is moved outward until the collar tg contacts the stop S3, the inward movement can be measured and this rearward position likewise forms a reference for indicating the plate roll positioning reference in this case. Since the gear ratios between the 16 unit length screws, the worm gear ti and the worm 72 are all fixed, a particular rotation angle of the motor drive 3 results in a known and measurable inward movement of the bracket core.

In the same way, the forward movement of subframe 2B can be measured,
Can be controlled by motor reference. Motor 93. The tray is controlled by counting, and by using a counting device (not shown), the bracket core and the anilox roll 2t at known positions are moved to the sub frame and the plate cylinder. can be determined in the same way.

In a similar manner, by knowing the distance between a given reference point and the center line of the plate cylinder J, the secondary frame roller must be moved a particular distance inward from the reference point to be pressed.

Sufficient inward movement to achieve compression is provided by gears 3J, Jl.
It will be clear that this cannot be achieved without accurate gear meshing, and therefore positioning the deck for sufficient compression is a beneficial sub-effect of accurate gear meshing.

*Before explaining the q and io diagrams, an explanation will be given of Figure 1 in which the deck 2/a moves along the action II Jl&. For the initial setting of the tooth and valley sensing detectors, a fixture f (first diagram) with a horizontally extending pin P is attached to the shaft of the plate cylinder Jj&, and is attached to the solid axis of the central impression cylinder. It extends inward.

The tip of the pin P is made in the shape of a gear tooth, and when it is positioned inward, it comes to the position 4 of the pin P. If pin P
If the tooth profile pin is located exactly in the valley between one tooth of the pull gear, no further adjustment of the sensor position is required, but if the tooth profile pin is not located exactly, the exact meshing relationship will be explained below. The sensor can be positioned and measured until something happens.

The first λ required mechanical alignment, i.e. the positioning of the pull gear to receive the pre-positioned teeth of the plate cylinder gear is tix
This is accomplished through the use of a qrio diagram machine. In these figures, frame 1 is the support shown only in Figure 10!
It supports a horizontal shaft 941 attached to S. This shaft 941 extends axially towards one of the pull gears 3'l, 34I', and supports one proximity switch 97' for each gear, and a bracket 97' for the proximity switch 941. 97. ! Bracket to hold 7′? ! , 9
A' can be rotated about the axis 941 and is the axis? Proximity switch 97. can be slid in position along 4I. tri1
Sensor 9g, 'tg' is pull gear 3da.

3 Align with the center of 1. When the brackets 94 and 94' are rotated, a small gap is created between the sensors 9t and 9f' and the pull gears J and 3. When energized, the sensors vt, qt' detect the difference between a metal gear tooth and an adjacent cavity or valley, representing the edge of a pull gear tooth.

First, if the gauge pin is not centered with the valley of the teeth of the pull gear as shown in position 44 in Figure 1, the axial movement of D i + based on the bracket (leftward or rightward in Figure 1O) will occur. ) allows sensor 1g or tg' to detect either the presence of metal, ie the top of the tooth, or the absence of metal, ie the valley between the teeth. Detection and disparity between metals and cavities drives the pull gear in one direction or the other until the gauge pin at position 44 in FIG. You can use this signal to

Bracket in the titto diagram? 4. ! Note that it is possible to move one or both of the 0-pull gears axially so that the sensor associated with the bracket provides an electrical error signal to the fluid motor H (Figure 1). Then move the pull gear 3 very slowly until the error signal ends. By moving the sensor a small amount in a similar manner, the valley between the teeth can be precisely aligned with the gauge pin (not shown) on the plate cylinder at position 64 in FIG. Bracket 94.9 when the valley is exactly aligned with the gauge pin
4' is the axis! It is lockably fastened to the base and does not require further adjustment (remains fixed in this position).

Therefore, after initial setup, detection of the edge of the tooth at the location shown in FIG. 1O will always produce an electrical error signal until the detection of the tooth edge at the location shown in FIG. The valley between the two teeth of the pull gear achieves the conditions necessary for proper engagement between the teeth of the pull gear and the plate cylinder gear, and the teeth of the plate cylinder gear are horizontal as in position 46 in the diagram. It will be noted that the meshing position is the reference position in the pull gear, at which point/a is used as the reference against which other angular errors are measured. In other words, once the pull gear is tightened and the valleys between the teeth of the pull gear are accurately aligned for gear meshing, the calculation of the angle of the other deck will be the operating line relative to the axis of the central impression cylinder. automatically takes the difference between

The second two directions of mechanical operation required before gear meshing are in the anilox rolls, which are the 1j,
This will be explained with reference to FIG. At IIF/4WA,
The anilox rollcot is only partially shown on the right hand side. Further, a shaft member 100 is supported by a bearing 100, and the bearing 100 is provided as a part of the first sub-frame body.

The shaft 9t extends beyond the bearing ioo, and the plate cylinder! A pair of gears 10/ meshing with gears 33 and 33'.

Supports IO7'. Moreover, these gears 10/.

/ 0 /' is a helical gear, and even if there is no registration problem in the anilox roll, plate cylinder 2! Although the ink can be transferred in any direction to the cylinder, there is still the problem of achieving proper gear meshing.
The aim is to reduce the engagement of the various cylinders to a simple linear movement achieved by actuation (lower left-hand part of Fig. S).

Also, due to the action of the well-known plate cylinder gear JJ, simple trigonometric calculations can be made to determine the orientation of the anilox roll gear 10/ for smooth meshing. This therefore defines the intended angular orientation of the anilox roll gear 10/, which must be introduced into the printing press for each print (repeat).

For accurate meshing between gear 10/ and gear 33, gear 10/
/, 10/' dials are provided. In particular, as shown in the left-hand portion of FIG. 76, the dial/θλ consists of a plate with numbers indicating angles on its outer surface. This plate was bolted to a tubular member 10J which was bolted to the gear support iou.

The teeth of the gear can be selected for accurate meshing engagement with the plate cylinder chain wheel JJ, but the number of angles can be determined from the display mark 10k shown at the top of the diagram. The display mark 10j is provided on a split collar 104 rotatably attached to the tubular part @10JIC. For example, if the teeth are chosen to mesh 13" out of the exact alignment of the indicator mark ioz and the dial is set to zero (a given repeat), then the indicator mark i
The anilox roll is rotated when the dial setting is /Jo as determined visually for the OS.

If the anilox roll is placed at an angle so that the zero reading mark of the dial is aligned with the display mark 10f when the ball 10 engages with the stop/10, then the anilox roll and the dial are placed at the planned angle. ◇ In actual operation, the angular rotation of the anilox places the gear teeth at the same predetermined angle from the stop, thus placing the teeth in a precise angular relationship for gear retention between both gears on the anilox roll and plate cylinder. A card is provided for each repeat copper amount that indicates the roll angle setting.

OPERATION In the operation of this invention, the following changes (reply for copyright) are advanced: Therefore, six suitable plate cylinders were selected, during which time the press was operated with a repeat of the previously selected plate cylinder, and a special position was placed on axis 3 of fixture D3 for accurate orientation away from the press. Installing the registration device 3S of 0, especially the color j! ,? 4! Rock bolt 4! , 74 (see Figure) and lock bolt 7 (see Figure 6) on collar 6 are loosened to allow free rotation. Registration device JS has keyway II2° (Fig. 6)
aligned with the axis 3λ° (
(Fig. S) is sleeved. The keyway dowel 1 is the same as the keyway dowel shown in the left-hand part of the figure 1, and is coordinated with the version II 4-S.

This is gear 3JCN3,4 aligned with keyway 4I-1°.
It is based on the preselected special tooth T shown in Figure), which particularly prevents injury, and the keys S reference λ and λ'.

To ensure accurate positioning of the scheduled tau,
The center Tc (Jig, Fig. 7) is centered in the axial direction of the pull gear 31I or the third gear 1, and the handle wheel 6 is turned to lift the gauge block 6/. When the gauge block 6/ or A/' (Fig. S) is slowly lifted, a special
The gear 33 is operated so that 11iIT is set.

This is possible because the sleeve J6, which is the innermost part of the registration device 3j and supports the gear 33, is provided with a groove S through which the pin s3 extends (the third
figure). When the post AJ, 41I is on the platform of the valley facing the selected tooth T, the tooth T is accurately centered and located on the sleeve J6! Color j in place! (Fig. 4) The rock bolt base is firmly fixed! is tightly attached. The preselected tooth T has a center that coincides exactly with the current score line 4/.

#! A print body related to Kodetsuki! Registration device 3 for all plate cylinders except a! has the phase angle to be introduced. This results in a difference in the angular positioning of the deck, as explained above. For example, tg ' t J
# a # b The deck is arranged so that the working line of the roller does not pass through the contact point with the central impression cylinder, 22, thus ensuring that the appropriate tooth of gear J3 meshes with the appropriate valley of pull gear 34I. The phase angle is derived as follows.

To derive this preselected angle, set the gauge block &/or so as to free the gear 33 in rotation.
A/' is retracted. At this point, the registering device 3j rotates the shaft JJ in order to lock the pin SII and the keyway 412'.
It will be understood that it cannot be rotated relative to '. Furthermore, color j! is tightly fastened to sleeve 36, so there is no appreciable rotational movement between pin 1+ and gear 33.

To derive the required phase angle, the /S wheel go is rotated until counter j3 coincides with the correct angle. For example, in one selected copy and 1s6 deck, this angle is l/3. It is Ko. This value is the counting device for the steering wheel j0! The loosely attached collar Af (Figures 3 and 6) is then turned around until it is marked on J.
The stop 4yCIIJIKI) is the ball shaft 7 of the plunger 71.
0 until it is engaged. After that, the lock bolt is tightened tightly by holding the collar 6g to the outer sleeve Jt, and the sleeves 3g and 34 are connected to each other by the axial spline 3 so as not to make noise when rotating.This operation is carried out. When it is hit, the pre-selected tooth stops 6!
is now at a predetermined phase angle with respect to When the registration device is removed from the fixture 3 and installed on the printing press as part of the plate cylinder, the positioning of the stops is such that the teeth of the intended part are at the same phase angle with respect to the ball 70'. ensure that

For this purpose, the registration device Jj is connected to the axis J of the setting fixture $3.
It is separated from J' and is attached like a sleeve to the shaft J of the plate cylinder S as shown in the figure. especially,
Color! rj bottle! The 0 collar is aligned with the axis JJ6, which means that the preselected tooth is now in a predetermined fixed relationship to the plate 3 of the plate cylinder. 4I's lock bolt black is registration device J! Since plate 0 is now attached to plate cylinder 3 in the predetermined relationship to the marking line DA1, plate 4IQ and the preselected teeth are now in the required relationship. .

In order to obtain the proper relationship between the selected tooth and the pull gear J'l, a stop 6t is used as shown in FIG. Ball 01 as part of the sub frame roller that supports the plate cylinder S
is provided.

Also, referring to FIG. 3, a part of the sub-frame roller is shown in the lower left part, and a part of the sub-frame roller is shown in the lower left part. bearing iiJ supporting the shaft 32 of
It is seen that it has.

The sub frame 24 also includes a setting fixture 41 for positioning.
It has an arm ii+ on which a ball forming mechanism is provided opposite to the required position of 3. The arm 11 has a plunger 7718 with a ball 70' that engages the stop 6de. The sphere 7σ is pushed upwards by an air cylinder lls supported by an arm/141. air cylinder/l
! When energized, the ball 7σ rests on the outer surface of the collar 4g and the plate cylinder ko! When rotated, it comes into engagement with the stop 6t. This ensures that the preselected tooth is oriented at the proper angle relative to the intended valley of the pull gear Jl.

For this purpose, however, the outer sleeve St supporting the plate cylinder gear 3J is still free and is moved at an angle f+ relative to the plate cylinder by means of a spline connection to the fixed inner sleeve J6. . Therefore, a device is provided to limit this axial movement, whereby the pull gear J
Position the center of the planned 1llIIT by aligning it with the center of the matching valley of Hiro. This can be seen in the right-hand portion of Figure 3, where there is a ball bearing fixed to the end of the shaft J. This ball bearing //A is fixedly held by a middle collar /l which is pivotally connected to the arm //tei.

In particular, the arm //tei pivotally supports the bracket iit which is pivotally attached to the arm //41 at //1.

Ball bearing //1. When the 0-version cylinder S, in which a locking lever l-0 is provided to secure the bracket llt in the upper position to support f, is placed in the sub-frame J4, the bracket//l is moved from the horizontal position to the Iis figure. Pivoted to the position shown to rotate half of the bearing / /4. If bearing //4 is not precisely aligned with half collar let, it can be moved in either direction axially by the spline connection between collar JK and collar 36. This action ensures that the center of the gear of the plate cylinder is axially aligned with the center of the pull gear Jul.The locking lever l-0 is then tightened so that this The position is maintained. After this, the registration device that was previously locked with the entire plate cylinder is stopped by 6t.
is rotated until it engages ball 70', which provides accurate rotational reference for gear engagement between the plate cylinder and pull gear and automatic color registration when the overlapping deck t11 is gripped and engaged. Achieve alignment.

A must-have for accurate gear engagement between the central impression cylinder gear and the plate cylinder gear! One condition is that the central impression cylinder gear must be positioned at a very precise angle. Since the gears are helical, it is necessary to have a means to always position the plate cylinder line part at the axial center of the central impression cylinder gear, so accurate angular rotation is possible and accurate gear meshing is possible. The center of the gear is always used as the single point to determine.

A centering device for the plate cylinder is provided in the form of a positioning device labeled l. The positioning device 13 has a cam roller 1J mounted on a bracket ttt. Lamp /Jt is provided on half color //1,
When the cam roller/all engages the ramp 12,
The valve l roller is shut off, indicating that the fluid cylinder saw l position is in the intermediate position, and in the intermediate position of the fluid cylinder /J/ the cow collar //7 is turned off by the pull gear J41. When the plate cylinder S in the planned position with respect to the center of J4I' is mounted on the printing press together with the registration device SZ, the bearing //4 located in the groove/notch 41 of the half color //7 is pulled The center of the gear
Then, position the center of the gears JJ and JJ' for the plate cylinder.〇If the bearing //4 is the groove/ /! ' unless aligned with '
- The bearing //A is moved into the groove //A' by the axial movement of the collar 4t and sleeve 31 attached together, -
33. JJ' is the central impression cylinder J41. J#' is precisely axially aligned.

Since the fluid cylinder is in the intermediate stroke, when the printing press is operating, the helical gears JJ, J, 7' are moved axially to the right or left by the operation of the fluid cylinder /J/, causing a slight movement. Angular advance or pull gear 31. This causes a delay of Jl'. This is normal and well known to those skilled in the art.

The pull gear J41 is now rotated to a predetermined position by the sensor 91 of the proximity switch which senses the correct shape of the teeth, so that when the plate cylinder is moved towards the center pressure j4-1, these plate cylinders 2j and The gear teeth associated with cylinder JJ mesh properly, but before movement of these one cylinder, the anilox roll roll lll/! , O is oriented at a precise angle in the manner previously described using the ball and stop devices iot, iio described in connection with FIG. , each edition body! Mounting tool 41. for accurately positioning. I and irises.

A roof row device is provided. II/The alignment device is a pin! It has a key ML, 41, which is engaged with the key.

When these multi-row devices are correctly positioned, color 5!
A locking device of the form locks these aligned members. 1st
Stop the 11th row device 4? It has a radius of 0°70'.

When the stop 1t is aligned and positioned in the mounting position 3, the collar 6t is attached to the sub-frame 2k by the registration device JS.
is locked to maintain this alignment when moving. Ball 70, provided as part of porcelain frame 24, then provides the same orientation of plate cylinder gear 33 as in fixture 41J.

An IgJ alignment device is provided on each anilox roll in the form of a stop/10 and a ball iot, where the stop ioq is a color iob.
C11114 is locked in the scheduled rotation with the helical gear 3J of the plate cylinder by C11114)0 All requirements for automatic gear meshing and misalignment between the decks are present, and the plate cylinder gear meshing The linear actuation of the secondary frame 26 of the transfer cylinder with appropriate gear engagement between the plate cylinder gear and the central impression cylinder gear can be performed to complete the head exchange. . This is the axis tco, 9
2' by the handle wheel or motor, and the sub frame J4. This is done by a transformed rotation of the body axis It, 14.

Since the axis 92.92' produces a constant fixed value of linear movement of the sub-frame, the use of a fluid motor with a feedback signal to the microprocessor is automatic based on a known value of different images (repeat). The microprocessor can signal the fluid motor to move the secondary frame to the suppressed position and precisely determine when it should be deactivated.

After the linear movement of the sub-frame core is completed, the sub-frame core is firmly locked against the brain frame roller by the cylinder jl, and the image frame center and roller are locked against the two central impression cylinders. Details of such a locking device are shown in previously granted US Pat. No. 1, JIIJO Deide.

To further explain the embodiment of the easternmost form, the trigonometric calculations of the present invention will be described. For this calculation, the horizontal deck position was chosen for simplicity as seen in the 1st IWA (
1st or 3rd deck). 1st. I, @, 4 Decks require a separate calculation formula because the horizontal center of the central impression cylinder *V deck position does not pass through, and this separate calculation formula is related to other deck positions relative to the horizontal deck position. The following calculations are performed based on the position of the red line and the position of the special gear tooth when the plate cylinder is aligned with the central impression cylinder.
Position the teeth of the gear on the anilox roll so that when the deck comes to the stamp press position, it will be located exactly with the corresponding valley of the plate barrel gear. o At $/Ii/I III,
The symbol ``indicates the arc length, and it is understood that the arc length is around the roll or cylinder. In either case,
Knowing the diameter of a given torso, the arc length and angle measurements can be mutually determined. In fact, although the angle β is shown as a measured angle, it can be converted into an arc length and is equal to A8. In fact, when point 90 of the plate cylinder is rotated by an angle β, point 90 coincides with point 9/, and these points coincide with the horizontal center line between the plate cylinder and the impression cylinder.

These calculations predetermine the point on the downstream deck in advance of the time when the special point 9/ is rotated around the central impression cylinder to reach the various deck positions. It shows that you can make decisions.

In addition, such calculations can be made by comparing the rotation angle and arc length with the number of teeth of the gears involved, so that the gear engagement between the anilox roll and the plate cylinder can be determined by Detsuki's work IIIk8.
This indicates that the anilox rolls will meet in rotation at the predetermined position, as will occur when the roll is rotated.

Rich, j　O＊’copy plate cylinder φ-it.

=2 J9Jjiat M8=De1. J41f-(JXJ sail j71)-10, J4 inch + j^4 scratch α = JO-tei, b*J-izo = iJ-tei, 4q 0.10
0-0.004=-OJI (out of phase) In the above description, the detailed description of the embodiments of this invention was provided for illustration purposes only, and does not depart from the spirit and scope of this invention. Various modifications and changes in the details herein described may be made by the industry's experts without further ado.

[Brief explanation of drawings]

jlIl#A is a side view schematically showing a six-color flexographic printing machine as used in the practice of this invention; WJlilil! , US view is a partial cross-section of the plate cylinder, the registration device, and related printing press components and shown in dashed lines, No. 411il is a perspective view of the registration device, and FIG. 81 is a perspective view of the setting fixture of the registration device. figure,
Figures 6 to 1 are perspective views of registration device members, Figure 9 is a side view of a part of the pull gear and a proximity switch for accurately positioning the pull gear, and Figure 9 is a top view of the recommended proximity switch. s Ki i7'i to/411 Figure is a side view of the gear in different copies on the plate cylinder, 1st! , 14 relates to anilox rolls and transfer rolls - side and end views of portions of the printing deck, summary drawings, 1st jll with applicable codes for use in calculations to achieve registration. It is a schematic diagram. In the diagram, here: Detsuki, here: central impression cylinder,
Ko S: Plate cylinder, 24 = sub frame, λ Rini bracket, J
te anilox roll! ? : Fountain roll, 3
Koni shaft, JJ: Gear, J-tei nibble support wheel, J3 Futami-doro fitting device, 3h, 3t Ni-sleeve, J7: Spline, Reference 1: Injury * ms 41 Koni key groove, Da 3: Mounting tool, Tei 4 = Bracket, j0 = Handle a, ss: Count! lI
%l-tei: pin, sr, 41. To! r, It: Color %j
7:il1%40=gauge block f! Placement, 42: Handle wheel, 4s = Lock bolt, 69°tJ: Stop, 7J
Nibrangia device, ti, t dancillin i, vt, vt
lH switch, 9t, qt': sensor. FIG, II FIG,
12FIG, 14

Claims (1)

[Claims] / A method for achieving rotational registration of a printing press having a central impression cylinder with a helical gear and a plate cylinder with a helical gear, in which a reference mark on the plate cylinder is attached to the plate cylinder before mounting on the printing press. orienting the plate cylinder in a predetermined angular relationship and moving the plate cylinder gear radially into engagement with a central impression cylinder gear after mounting the plate cylinder on the printing press. 2. A printing press is equipped with a plurality of plate cylinders, and each plate cylinder is orientated before being installed in the printing press. 2. A method as claimed in claim 1, characterized in that after mounting the plate cylinder, the plate cylinder gear is moved substantially simultaneously into mesh with the central impression cylinder gear. 2. A method as claimed in claim 1, characterized in that the one plate cylinder gear is phase-displaced with respect to the other plate cylinders before installation. Each plate cylinder gear is interlocked with a transfer roll gear, each transfer roll gear is oriented while on the press to mesh with its associated plate cylinder gear, and all transfer roll gears are aligned simultaneously with their associated plate cylinder gears. 4. A method as claimed in claim 3, characterized in that the plate cylinder gears are brought into mesh and the plate cylinder gears are moved into mesh with the central impression cylinder gear. The central impression cylinder gear is oriented before meshing with the plate cylinder gear so as to align the gap between the gear teeth with the plate cylinder gear having no one-phase displacement. The method described in Scope No. D. B. The plate cylinder gear is provided with a part of a registration device, the registration device having a sleeve device that allows limited rotation of the gear relative to the plate cylinder reference, and the rotation and orientation process is positioning the registration device in a locking device having a registered registration device and a locking device similar to that in the plate cylinder, and positioning the registration device in a locking device having a registration device and a locking device similar to that in the plate cylinder, and 4. The method of claim 3, further comprising orienting the gear and subsequently locking the plate cylinder gear to the sleeve device prior to attachment to the plate cylinder. 2. In a method for achieving rotational registration of a printing press having a central impression cylinder with helical gears, a plurality of plate cylinders with helical gears and a peripherally arranged transfer cylinder arrangement. A registration device having an associated plate cylinder helical gear is provided for each plate cylinder. 1 of each transfer cylinder device. A J alignment device is provided. A positioning fixture device is provided separate from the transfer cylinder device having the same agl, alignment device. Each alignment device is subsequently attached to a positioning fixture arrangement and angularly aligned with the first alignment device to direct the teeth of the intended gear while each alignment device is attached. Thereafter, at least some of the registration devices are rotated and attached to the fixture device in a predetermined sequence to provide different angular relationships of the predetermined teeth to the first alignment device. Directly flow the stop device to the registration device in alignment with the first alignment device of the fixture device. Remove the registration device from the fixture device and remove the first one from the printing machine.
．． A registration device is attached to multiple special plate cylinders in the same relationship to the alignment device. The central impression cylinder is oriented in a predetermined relationship with one of the plate cylinders fitted with a helical gear so that the central impression cylinder is positioned so that the void space between the teeth of the helical gear is aligned with the predetermined teeth of the plate cylinder fitted with the helical gear. with 1
The plate cylinder is moved by the radial movement of the helical gear, and other cavities between the teeth are provided so that the rest of the plate cylinder meshes with the scheduled rotation of the helical gear. According to the predetermined order, the related plate cylinders are directed to the helical gears, and the transfer cylinders are directed to the helical gears. 2. A method as claimed in claim 1, comprising simultaneously moving the transfer cylinder and the plate cylinder in the radial direction so that the alignment wheels are aligned simultaneously. l In the printing press, each transfer cylinder is provided with a third alignment device for the helical gear, and each transfer cylinder is provided with a stop device for the helical gear, which stop device is provided with a directional flow for alignment with the third alignment device. radial movement of the transfer cylinder and plate cylinder gears causes the plate cylinder and transfer cylinder to mesh with the helical gear so that the associated plate cylinder is aligned with the void between the teeth of the helical gear so that each transfer cylinder 8. A method according to claim 7, characterized in that the predetermined teeth of a helical gear are positioned. Each plate cylinder is restrained from unintentional axial movement when installed in a printing press by a helical gear, and when the first plate cylinder engages with a helical gear, the central impression cylinder engages with a helical gear. 2. The method of claim 1, further comprising selectively increasing movement in the y-axis direction to limit the registration exerted on the web moving with the central impression cylinder. 10 Each registration device has a sleeve and a collar. The sleeve acts to place the predetermined teeth in predetermined alignment with the plates on the plate cylinder, and the collar acts to place one plate Pi4 in a predetermined angular relationship with respect to the predetermined teeth on the first plate of the helical gear. 8. A method as claimed in claim 7, characterized in that it operates to position the intended teeth of a helical gear.