JPS6343084Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a plate assembly machine used for attaching a plate cylinder to a plate shaft used in rotogravure rotary printing presses and the like.

[Prior art] Plate cylinders used in rotogravure printing machines, etc.
A tapered hole is drilled at the center of each disc at both ends of the cylindrical body, into which a plate shaft is inserted, and members (also called taper cones) each having a conical surface that fits into the taper are inserted from both ends of the plate shaft. Then, it is fitted toward the taper hole of the plate cylinder, and the conical surface is pressed and fixed to the taper hole bored at the end of the plate cylinder, and the friction force generated between the two causes the plate cylinder to move. It is fixed to the plate shaft and allows centering of the plate cylinder and the plate shaft. To explain in more detail, referring to FIG. 1, this figure is a cross-sectional view along the longitudinal direction of a conventionally used assembled plate cylinder, in which numeral 11 is the plate cylinder, 12 is the plate shaft. one side of the taper cone,
On the stationary side, the taper cone 13' is fixed in the axial direction by means of a fitting 18 fitted into one of a number of grooves cut into the peripheral surface of one end of the printing shaft 12.
The taper cone 14' on the opposite side has a nut 1 that is screwed into a thread groove cut on the other end circumferential surface of the plate shaft 12.
7 is tightened to the plate cylinder 11 side.

Therefore, it is necessary to turn the nut 17 many times until the drum of the plate cylinder 11 is fixed in a predetermined position on the plate shaft, and a large spanner is used to obtain sufficient tightening force. This often requires enough force to be suspended by the weight of one or two people.

In particular, ink often adheres to the thread groove of the plate shaft during operation, making it difficult to turn the nut. In addition, the work of removing attached ink,
This is difficult because there is a thread groove. Furthermore, used plate cylinders have ink stuck to the plate cylinder and taper cone, so when disassembling them or replacing the plate cylinders, a shockingly large load is required, which requires a considerable amount of work. It is difficult and requires a lot of time and effort.

On the other hand, there are devices on the market that use a motor to rotate the tightening nut 17, but there is no device that uses a simple mechanism to do the work.

[Purpose] The present invention was devised in view of the difficulties that exist in assembling or replacing plates on conventional plate cylinders as described above, and provides a plate assembling machine that can extremely easily disassemble and assemble plate cylinders. The purpose is to improve the efficiency of printing operations.

[Configuration] The present invention was developed to achieve the above-mentioned purpose, and its configuration is shown in sections 2 to 5 corresponding to the embodiments.
To explain using figures a and b, the plate assembly machine of the present invention has a ring-shaped groove provided in a pair of taper cones 13 and 14 that are interposed between the plate cylinder 11 and the plate shaft 12 and fix them together. A pair of receiving metal fittings 2 and 3 are installed on the table 1, each fitting into a corresponding U-shaped receiving part to hold the plate shaft 12, and one receiving metal fitting 3 is connected to the other receiving metal fitting on the table surface. 2
The other receiving metal fitting 2 is rotatably pivoted on the table surface, and the other receiving metal fitting 2 is rotatably pivoted on the table surface. A plate shaft 12 is fitted and held in the U-shaped receiving portion at the outer end of the receiving fitting 2.
A latch 8 is provided that can press and lock the end of the holder downward.

[Example] Next, one embodiment will be described with reference to the drawings.

Figure 2 is a front view of the invented version of the assembly machine, Figure 3 is the left side of the main part, and Figure 4 is the right side.
is a table, on the surface of which support metal fittings 2 and 3 are respectively supported, the metal fitting 2 can be rotated on the table around a shaft 4 embedded in the table surface, and the metal fitting 3 is supported on the table 1 with respect to the shaft 4. It is slidable by fitting into a guide groove 5 bored in the longitudinal direction, and is pivotally connected to one end of a hydraulic cylinder mechanism 6, so that it can be slid on the table 1 according to the operation of the hydraulic cylinder mechanism. be close to and isolated from the receiving metal fitting 2. In addition, a plurality of holes are bored on the table 1 along the extended side of the guide groove 5, and the stopper 7 is fitted into one of the holes, so that the receiving fitting 3 slides inside the guide groove 5. The plate shaft 12 is also prevented from losing its holding function and from deviating from the guide groove.

The receiving fitting 2 consists of a substantially L-shaped member, and the shaft 4
is locked with table 1 at its bottom,
Both are rotatably attached to each other, and a U-shaped receiving portion is formed on the upper edge of the long side, and this portion is fitted into and supported by a ring-shaped groove provided in the taper cone 13. In addition, a C-shaped hook 8 is pivoted on the short side (see Figure 3), a screw shaft 9 is screwed into the part of the bracket 8 on the opposite side of the shaft support, and a V block is attached to the end of the screw shaft 9. ,
A handle is provided at the other end, and the groove of the V block can engage with the extension of one end of the plate shaft 12, and in this state, by turning the screw shaft 9 with the handle,
The groove of the V block can hold the end of the plate shaft 12 in opposition to the U-shaped receiving portion.

Also, turn the handle to reverse the screw shaft 9, and
When the block is pulled away from the plate shaft 12, the latch fitting 8 can be rotated around the shaft attachment portion between it and the receiving metal fitting 2, and can be released from engagement with the plate shaft 12. The latch 8 is connected to an operating mechanism 10 consisting of a handle, an extension shaft, and a suitable link member so that it can rotate around the shaft support from the opposite side of the table 1, that is, the side from which the stopper 7 is protruded. has been done.

On the other hand, the receiving metal fitting 3 has a frame member erected in a direction perpendicular to the sliding portion thereof, and a frame member of the same shape and size is provided on the upper edge of the receiving metal fitting 3 at a position corresponding to the U-shaped receiving portion of the receiving metal fitting 2. A U-shaped receiving part is formed into which a ring-shaped groove provided in the joint-shaped part of the tapered cone 14 on one side of the plate cylinder can be fitted and supported.

The structure of the plate assembling machine of the present invention is as described above, but the plate cylinder fixing mechanism used therein is slightly different from the one previously described, so it will be explained. In Fig. 2 and Fig. 5a, b, the plate shaft 12
The taper cone 1 does not have a threaded part or groove like the conventional one, and that part becomes a straight shaft.
4 is a two-part structure 15 excluding the conical surface part [see Figures 5a and b], and the two-part structure part 15 consists of two semi-cylindrical members, one half of which is integral with the conical surface part, and the other half is integrally connected to the conical surface part. The halves are separated and have the same structure as a so-called box-shaped joint in which both semi-cylindrical members face each other and are screwed together, and the taper cone 14 is fixed to the plate shaft 12 by mutually tightening bolts 16. A ring-shaped groove is bored in the two-split structure part 15 at right angles to the axis, and the U-shaped receiving parts of the receiving fittings 2 and 3 in the plate assembling machine are fitted into the groove, so that the ring-shaped groove is perpendicular to the axis. It shall be possible to integrate it with the taper cone.

Therefore, in the plate cylinder for the plate assembly machine of the present invention, taper cones 1 of the above type are provided on both sides of the plate shaft 12.
3 and 14 are tightened and fixed with bolts 16.

Disassembly work First, the work of disassembling the plate cylinder having the above structure using the plate assembly machine of the present invention will be explained.

The used plate cylinder was brought onto the table 1, and the U-shaped receivers formed on the receivers 2 and 3 on the table 1 were fitted into the ring-shaped grooves provided in the taper cones 13 and 14, and the plate cylinder was placed on the table 1. Hold above 1. Of course, in that case, the hydraulic cylinder mechanism 6
is left in an idle state, and the spacing between the receiving metal fittings 2 and 3 is set to be approximately equal to the spacing between the respective ring-shaped grooves on the plate shaft. U
It is desirable that the end circle of the receiving portion be chamfered so that the letter-shaped receiving portion can easily fit into the ring-shaped groove.

The plate cylinder placed on the support fittings 2 and 3 is arbitrarily rotated so that the head of the tightening bolt 16 of the taper cone 14 faces upward, and then the screw is loosened.Then, the latch fitting 8 is rotated to secure the end of the plate shaft 12. When the screw shaft 9 is lowered by turning the handle until the V block engages with the plate shaft, the latch 8 stops at that position. As a result, the plate shaft 12 is held at one end by the support fitting 2 and the latch fitting 8, so that even if the other end of the plate shaft 12 is no longer supported, However, the plate shaft 12 is supported in a cantilevered manner.

After completing the above operations, when the hydraulic cylinder mechanism 6 is gradually operated to the extension side, the power is transferred to the taper cone fitted on the plate shaft 12 through the receiving fitting 3, the U-shaped receiving part, and the ring-shaped groove. 14, the cone 14 moves in the longitudinal direction of the plate shaft 12, and the portion that is fixed to the plate cylinder 11 is separated by the thrust force. Next, when the stopper 7 is removed and the hydraulic cylinder mechanism 6 is gradually operated to the extension side, the taper cone 14 is separated from the tapered hole at the end of the plate cylinder 11.
finally escapes from the block 12. Thus, the printing shaft 12
However, since the other end of the plate shaft 12 is supported in advance by the hook 8, there is no risk of the plate shaft 12 falling onto the surface of the table 1.

In this state, the entire plate cylinder swings in a horizontal plane about the rotation cylinder shaft 4 of the receiving metal fitting 2, and the plate cylinder 11 is pulled out from the plate shaft 12.

If you follow the plate assembly machine and disassembly process as explained above, even if the plate cylinder has ink attached between the plate cylinder 11 and the taper cones 13 and 14, the plate cylinder can be disassembled easily compared to conventional methods. It is extremely easy for anyone to do this without requiring any particularly large impact loads.

Assembly Work When assembling a new plate cylinder to the plate shaft, the operations described above can be performed in reverse, and we will now outline the process.

A taper cone 13 is fixed to one side of the plate shaft 12,
The ring-shaped groove is fitted into the U-shaped receiving part of the receiving metal fitting 2 of the plate assembling machine, and the end of the plate shaft 12 is engaged with the groove of the V block of the latch fitting 8, so that the plate shaft 12 can be held in a cantilevered manner. It is supported almost parallel to one surface of the table. In this state, a new plate cylinder 11 is inserted from the other end of the plate shaft 12, and the taper hole of the plate cylinder 11 is fitted into the conical surface of the taper cone 13. After that, the taper cone 14 is inserted into the plate shaft 12. After fitting the conical surface into the tapered hole of the plate cylinder 11, the whole is rotated in a horizontal plane around the rotation axis 4 of the receiving metal fitting 2,
The U-shaped receiving part of the receiving fitting 3 that slides on the table 1 is fitted into the ring-shaped groove provided in the cone 14,
In the end, the plate shaft 12 is held by the receiving fittings 2 and 3.

Next, the taper cone 14 is rotated and adjusted to facilitate bolt tightening work, and the hydraulic cylinder mechanism 6 is operated to the contraction side to reduce the taper cone 14.
The plate cylinder 11 is compressed in its width direction by the conical surfaces 3 and 14, and the space between the plate cylinder 11 and the plate shaft 12 is fixed.
Then, the two-split structure portion 15 of the taper cone 14 is tightened to the plate shaft 12 with the screw 16, and the cone 14
By fixing the plate cylinder to the plate shaft 12, the assembly work of a new plate cylinder is completed.

The new plate cylinder 11 has a tapered cone 13 in the width direction,
Since it is compressed by the conical surface of 14, the plate shaft 12 is automatically compressed.
The plate cylinder 11 and the plate shaft 12 are fixed together by the frictional force between them.

Next, loosen the screw shaft 9 of the latch 8, and
Once removed from the end of the plate shaft 12, the newly assembled plate cylinder is ready to be installed in a printing press whenever necessary.

The action and effect are the same as those described in the disassembly work above.

Replacement work Since this is a combination of disassembly and assembly work, it has already been described and there is no need to explain anything new.

[Effects] As described above, in the plate assembly machine of the present invention, one of the receiving metal fittings can be moved arbitrarily along the guide groove in the longitudinal direction of the table according to the operation of the hydraulic cylinder mechanism,
Since the other bracket can rotate on the table surface and a latch is provided at the outer end of the other bracket, the plate spindle can be moved easily even if the taper cone on the one bracket side loses its support. It can be supported in a holding position and can also be rotated, and as mentioned above, disassembly, assembly, and replacement can be performed extremely easily and efficiently without requiring special skills.

[Brief explanation of the drawing]

Figure 1 is a longitudinal sectional view of a conventionally used plate cylinder, Figure 2 is a front view of the inventive version of the assembly machine, Figure 3 is a left side view of the main parts, Figure 4 is a right side view, and Figure 4 is a right side view. 5
Figures a and b show partial views of the taper cone. 1...Table, 2, 3...Bracket, 4...
Rotating shaft, 5... Guide groove, 6... Hydraulic cylinder mechanism, 7... Stopper, 8... Latching fitting, 11...
Plate cylinder, 12... plate shaft, 13, 14... taper cone, 15... two-split structure part, 16... tightening bolt.

Claims (1)

[Scope of utility model registration request] A pair of ring-shaped grooves provided in a pair of tapered cones interposed between a plate cylinder and a plate shaft to fix them together are fitted into corresponding U-shaped receivers to hold the plate shafts together. The receiving metal fittings are installed on a table, and one of the receiving metal fittings can be freely approached and separated from the other receiving metal fitting on the table surface along a longitudinal guide groove according to the operation of a hydraulic cylinder mechanism, and A receiving metal fitting is rotatably mounted on the table surface, and the outer end of the other receiving metal fitting is fitted into the U-shaped receiving part and presses and restrains the end of the plate shaft held downward. A plate assembling machine characterized by being equipped with a latch.