JP2873463B2 - Transport device for photosensitive printing plate - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a photosensitive printing plate transport device.

[Conventional technology]

Generally, a photosensitive printing plate is obtained by forming a photosensitive resin on a support such as an aluminum plate. This photosensitive printing plate is usually as large as about 1 m × 1 m per sheet, and weighs very much at 500 to 1000 g per sheet.

Conventionally, when storing or moving the photosensitive printing plates, an appropriate number of the printing plates have been horizontally overlapped via interleaving paper.

However, the use of interleaf paper for preventing scratches is extremely poor in workability during superposition and removal.

In recent years, as shown in FIG. 9, the photosensitive printing plates 1, 1,...
Rigid end plates 2, 2 are arranged on both sides and tightened with bolts 3, 3, ... to form a pallet, and the photosensitive printing plate is prevented from being displaced by vibration etc. to prevent damage to the photosensitive surface.

In this case, one end plate 2 is used as a pallet table, and at least one of the end plates 2, 2 between both surfaces of the photosensitive printing plates 1, 1,... Provided. Furthermore, the number of sheets to be superimposed is usually about 700 to 1500 sheets.
Since it weighs ~ 1000kg, a forklift is used.

[Problems to be solved by the invention]

However, when the above-mentioned end plate is used and the photosensitive printing plates are superposed horizontally, first, a large space of 1 m × 1 m or more is required as an installation area during storage. Secondly, for example, a printing plate group of 700 to 1500 sheets transported close to a plate making machine (image forming machine, exposure machine),
When actually putting on a plate-making machine, for example, about 50 sheets that can be carried by hand, after removing the bolts 3, carefully rest on a table near the plate-making machine so as not to damage the photosensitive resin surface. , It must be taken out and used one by one, and its workability is poor and it has careful handling. Moreover, even about 50 sheets are quite heavy, so the burden on the workers is large. Further, for example, in order to take out every 50 sheets, it is necessary to insert the contact cardboard in units of 50 sheets at the time of superposition in advance, which leads to an increase in cost due to its use.

Thirdly, in connection with the second point, when 700 to 1500 sheets are put together, they are transported by a forklift, and before being put on a plate making machine, they need to be transported manually by workers, and the logistics lack smoothness. .

Fourth, if the end plates 2 and 2 are not sufficiently fastened, the photosensitive resin surface is easily damaged when a certain printing plate is displaced during transportation or the like. In addition, since the slip sheet is removed, when small dust is present between the printing plates, if the end plates are strongly tightened, the dust is easily damaged by the dust. Moreover, even before tightening, the load of the upper printing plate is considerable on the lower printing plate,
Easy to be damaged.

Therefore, the main object of the present invention is to provide a small flat occupied area when installed, to take out the transported one plate as it is, and to be extremely excellent in workability and efficiency, and furthermore, in handling. An object of the present invention is to provide a transport device that is almost free from damage.

[Means for solving the problem]

The above object is to provide a photosensitive printing plate group transport device in which a plurality of photosensitive printing plates having a photosensitive resin on a support are brought into close contact with each other and stacked, and the photosensitive printing plate group is placed between a pair of end plates. And holding the photosensitive printing plate group by sandwiching the end plates, and fixing the photosensitive printing plate group in a substantially vertical state, and among the end plates, the photosensitive printing plate group The end plate on the side on which the body leans is set on the table, and after removing the other end plate by releasing the sandwiching, from the surface side of the photosensitive printing plate group, the photosensitive printing plate is removed. The problem can be solved by making it possible to take out each sheet.

Further, the photosensitive printing plates may be interposed between the end plates without interleaving paper.

In addition, the stand has a bottom surface for holding the printing plate group in a vertical state and a side surface for holding the printing plate group in a state of being laid substantially horizontally. May be provided.

Further, one of the end plates may be fixed to a base, and the one end plate and the base may be made of metal.

Further, the one end plate may be formed by planarly framing a metal aggregate, and the plate member may be integrally provided on the photosensitive printing plate side.

Further, the plate material may be made of wood, metal or plastic.

[Action]

In the present invention, the photosensitive printing plate is placed on a table with a slip sheet interposed between the photosensitive printing plates or directly without the slip sheet. According to the knowledge of the present inventors, the insertion of 1000 sheets of photosensitive printing plate interleaving paper, and the work of removing the interleaving paper when removing the printing plate, each about 3 hours, a total of about 6 hours work spend.
Therefore, when interposed between end plates without interleaf paper, workability is remarkably improved.

Also, even without slip-sheets, since the photosensitive printing plate group is placed on the table in a substantially vertical orientation, the lower end surfaces thereof hit the table by its own weight, so that the horizontal direction and the upward direction of the surface direction The printing plate is hardly displaced, and scratches are prevented. As a result, the printing plate is difficult to move even if it is loosely clamped between the end plates to some extent, so there is no damage. Enhance anti-stick effect.

Furthermore, the printing plate group is installed on the table substantially vertically,
In addition, one printing plate has a large outer shape of about 1m x 1m but a thickness of about 2-3mm and is thin, so even if 1000 sheets are stacked, the total thickness is 200-300cm, and the installation space is small. Is enough.

Moreover, when the printing plate group is transported vertically to the plate making machine, the plate making person can take it out one sheet at a time and put it on the plate making machine, greatly improving the workability from transport to loading on the plate making machine. I do.

On the other hand, as a portable table, when the height is higher than the installation thickness width, it is unstable and easily overturned, and if overturned, the danger is extremely high due to the weight of the printing plate group. Therefore,
In addition to the vertical installation lower surface, install the feet for installation on the side, and when storing before use, if the printing plate group is laid down horizontally with the feet on the side down, It can be safely stored without danger. When the printer is used upright (e.g., on a plate making machine), the printing plate is taken out of the table and supplied to the plate making machine easily and smoothly.

Further, as shown in an example described later, it is inexpensive to form the base and the end plate by plywood. However, on the other hand, the plywood is rubbed every time the photosensitive printing plate is set up and taken out from the plate, and fluff is generated. The fluff falls on the photosensitive surface of the photosensitive printing plate, and becomes a factor that damages the photosensitive surface. Further, the plywood is not strong in strength, and when tightened with long bolts between the end plates, the bolts and nuts tend to be deformed. Therefore, even if this is prevented by interposing a washer, deformation cannot be completely prevented. Moreover, since the plywood has poor rigidity, it is easily deformed in terms of area. As a result, the fastening force is unevenly distributed, the fastening force does not act on the entire surface of the photosensitive printing plate, and a shift of the photosensitive printing plate group and generation of a flaw associated therewith are caused. On the other hand, when using plywood, thick plywood must be used in order to increase the strength, but thick plywood increases the weight.In contrast, in a preferred embodiment, the base and the end plate are made of metal. Is done. As a result, strength and rigidity increase,
Uniform fastening without deformation of the photosensitive printing plate group and generation of flaws can be performed without any deformation of itself. Further, there is no problem of generation of fluff when using plywood. Moreover,
When the end plate is formed of a metal aggregate and a thin plate material that comes into contact with the photosensitive printing plate, the end plate is light in weight and has good transportability. Also, deformation at the time of bolt fastening can be prevented. There is also an advantage of long life (excellence in durability).

[Specific configuration of the invention]

 Hereinafter, the present invention will be described in more detail.

FIG. 1 shows a first specific example, in which reference numeral 1 denotes a photosensitive printing plate, which is installed vertically on a stand 10 without interleaving paper or with interleaving paper interposed therebetween. Such a photosensitive printing plate 1,1
The end plates 12, 12 made of plywood are applied to both sides of the group, and the end plates 12, 12 are fastened by bolts 14 and nuts 16 around the periphery of the end plates 12, 12 which do not hit the printing plate 1. The support and the photosensitive resin surface are in direct contact,
It is installed on the platform 10 as an integrated unit.

The platform 10 is preferably portable, i.e. fixed to the ground, and is particularly preferably movable along the floor by casters 18. Further, it is preferable that the tightening with the bolts 14 is looser than the bolt tightening in the case of the conventional horizontal installation in order to prevent damage due to dust on the interface.

When the printing plates 1, 1... Are set on the table 10 as described above, the casters 18 can be used along the floor to the vicinity of a plate making machine (not shown), or using a forklift or the like when no casters are used. After the movement, during the plate making operation, the bolts 14, 14,... Can be loosened and taken out one by one and set on a plate making machine.

On the other hand, when one sheet is taken out to a plate making machine, for the stability of the printing plates 1,1,..., As shown in the second specific example of FIGS. It is preferable to lean the body in the aligned state. FIG. 2 to FIG. 4
In the illustrated example, the end plate 12A is inclined on the bottom plate 20 and erected by a reinforcing material 22, and is substantially perpendicular to the end plate 2A. Fixed on top. An appropriate number of casters 28 are attached to the bottom plate 20.

After the required number of printing plates 1, 1... Are placed on the end plate 12A, the end plate 12B is applied to the printing plate 1 whose surface is located on the side, and then the end plates 12A, 12B are separated. Long bolts 30, which pass through the bolt through notches 12a, 12a ... formed on their side edges,
30 ... to fix the printing plates 1, 1 ... group.

Further, in order to move them to, for example, the vicinity of a plate making machine, together with the above-described casters 28, a handle 32
Is installed. Since the handle 32 may be an obstacle during storage, it is preferable that the handle 32 be detachable by inserting and removing a pin 36 from a receiving cylinder 34 fixed to the bottom plate 20 or the like as shown in FIG. . It is not limited to this example as being detachable.

In the example of FIGS. 2 to 4, the printing plates 1, 1... Are superimposed and leaned against the end plate 12A, and a bolt is provided between the end plates 12A and 12B.
After fastening with 30, the handle 32 is moved to a predetermined position. At the time of taking out, after removing the bolt 30 and removing the end plate 12B, the printing plate 1 may be taken out one by one from the surface. In this case, since the printing plate 1 leans against the end plate 12A at an angle θ, preferably at an inclination angle of θ = 90 degrees to 60 degrees (not including 90 degrees), the take-out may not fall over. No, it is stable. Therefore,
There is an advantage that the photosensitive resin surface is not rubbed and damaged when taking out.

2 to 4 may be prepared in a plurality depending on the size of the target printing plate, or as shown in FIG. 3, the bolt insertion holes 12b may be provided with the end plates 12A and 12B. And the above-described conveying device may be common to the small-sized printing plate 1A.

When the printing plates 1, 1,... Are leaned against the end plate 12A, for example, an L-shaped end alignment member 38 is provided as shown in FIG. Putting it on is convenient for aligning the side edges of the printing plates 1, 1,....

On the other hand, as shown in FIG. 2, when the printing plates 1, 1,... Are erected during storage, the space occupied by the printing plates 1 and 2 is small, which is advantageous. On the other hand, the printing plates 1, 1,. The plate 1 tends to fall in a direction orthogonal to the direction. Therefore, as shown in FIG.
More preferably, casters 42, 42,... Are provided, and at the time of storage, the printing plates 1, 42 as shown in the third specific example of FIG.
1 ... If the group is laid horizontally, although it is difficult in terms of occupied space, the height will be lower than the bottom area.
A fall can be avoided. In addition, when the caster 42 is used as a foot for installation, the caster 42 can be moved to another place while lying horizontally.

On the other hand, when plywood is used for the pedestal 10 or 20, and the end plate 12, as described in the above-mentioned "action", it is inexpensive but has various problems.

Therefore, as shown in FIG. 6 to FIG.
The end plates 12A and 12B, the bottom plate 20, and the base plate 24 in the embodiment can be metal end plates 50A and 50B, a bottom base 60, and a base plate 64.

The base 60 is formed in a planar rectangular shape by appropriately combining angles. On the base 60, a support reinforcing material 62 is erected. The reinforcing member 62 is formed of, for example, square steel, and is fixed to the base 60 by welding or the like. Also, the inclined end plate 50A and the inclined base plate 64 are, for example, an aggregate 51 similarly made of square steel, and a surface plate 52 made of a thin stainless steel plate or the like previously fixed to the surface to which the photosensitive printing plate 1 is to be brought into contact.
And both are integrated by welding or the like. 62 is a spacer formed of a steel plate.

More specifically, the inclined end plate 50A is formed by framing square steel in a lattice shape by welding or the like, and fixing a surface plate 52 to the skeleton. The base plate 64 is similarly formed from the aggregate 64a and the surface plate 52.

Further, as for the other end plate 50B, an aggregate 51 made of square steel and a plastic surface plate 52a made of vinyl chloride or the like are used.
Consists of The reason why the surface plate is formed of a plastic plate is that the end plate 50B is frequently attached and detached, thereby further reducing the weight.

On the other hand, in the fourth specific example, the bolt insertion holes formed in the end plates 50A and 50B are used for fastening with the bolts 30.
The long bolt 30 is inserted through 50a, and is fixed by a nut. 50b is a washer.

According to the fourth specific example, it is possible to solve the problems described in the above-mentioned “action” such as the improvement of the strength of the base portion and the end plate portion.

As a modified example of the fourth specific example, a metal material is used for the aggregate in another shape such as an angle, a material other than steel is used as the metal material, and an appropriate metal is used without welding the aggregates to each other. It is possible to change the frame structure or shape of the material to another one, omit the surface plate, and the like.

In the present invention, when providing a printing plate of 100 or more, more preferably 300 or more printing plates on the table of the transport device,
The advantages are particularly great.

The photosensitive printing plate is generally coated with a photosensitive composition on a support such as an aluminum plate, and irradiated with actinic rays such as ultraviolet rays through a negative image or the like to polymerize or crosslink the irradiated portion to a developer. Insolubilize and elute the non-irradiated part of the light into the developer, and make each part an image part that repels water and receives oil-based ink and a non-image part that receives water and repels oil-based ink Is obtained by

In this case, the photosensitive composition is preferably a negative type
In the PS version, diazo resins such as condensates of P-diazodiphenylamine and formaldehyde are widely used.

However, this diazo resin is not used alone, but is usually used at least in combination with a binder resin.

As the photosensitive resin, a quinodiazide resin is typically used in the positive PS plate.

As the binder resin, a polymer having a phenolic OH group and a carboxyl group such as a novolak resin, polyparahydroxystyrene, and styrene / maleic anhydride copolymer is mainly used.

In addition, a photopolymerized or photocrosslinked photosensitive composition or the like can also be used.

In any case, the photosensitive resin as described above is a support,
For example, when a printing plate provided on an aluminum plate is manufactured, for example, after a series of processes such as degreasing of a support, graining, electrolytic polishing, anodic oxidation, washing with water, drying, application of a photosensitive solution, cutting, and surface inspection are completed. It is installed vertically on the portable table shown in each of the above embodiments without or with interleaving paper.

〔Example〕

 Next, examples will be described.

(Example 1) In a transport device in which a photosensitive printing plate is directly adhered without interposing a paper between photosensitive printing plates and a photosensitive printing plate is set on a table, a conventional horizontal installation and a vertical installation according to the present invention are used. In the case of using a transport device, the number of scratches generated was examined for each of the following photosensitive lithographic printing plates I and II. The investigation conditions are as follows.

* Dimensions and number of sheets 1003 x 800 x 0.24 (mm) x 1000 * Bolt tightening force 100kg fcm * Pallet dimensions 1200 x 1000mm * Number of bolts 8 * Type I: Photosensitivity containing novolak resin and naphthoquinonediazide compound The photosensitive lithographic printing plate II coated with the composition II: The number of scratches in the photosensitive lithographic printing plate 1000 coated with a photosensitive composition containing a diazo resin and an acrylic copolymer, Table 1 shows the results.

According to the vertical transportation device of the present invention, it can be seen that it is reduced by 50% or more as compared with the conventional horizontal transportation device.

(Example 2) In the case where an interleaving paper was interposed between the photosensitive printing plates, the same investigation as in Example 1 was conducted.

As a result, no flaws were observed in both the vertical and horizontal interleaving papers.

Conventionally, in the case of horizontal placement, first, about 20 to 30 sheets of photosensitive printing plate from the pallet, lean against a table called horse back,
In this state, it is necessary to remove the slip sheet and carry the photosensitive printing plate to the plate making process. On the other hand, in the present invention, it is installed vertically. Therefore, workability is improved. Therefore, we investigated the workability per 1000 sheets.
In the case of the present invention, unpacking → transport can be performed directly, whereas in the case of the present invention, it takes about 90 minutes to transfer and transport, and two people are required. Therefore, only 30 minutes are required for one person. In both cases, the time for removing the slip sheet is omitted.

〔The invention's effect〕

As described above, according to the present invention, there are provided advantages such that the installation area is reduced, the workability in carrying and taking out is improved, and the photosensitive resin surface is hardly damaged.

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of the present invention, FIGS. 2 to 4 show a second embodiment, FIG. 2 is a perspective view, FIG. 3 is a side view, and FIG. FIG. 5 is a front view of a horizontal installation state of the third embodiment, FIG. 6 is a front view of the fourth embodiment, FIG. 7 is a side view thereof, and FIG. FIG. 9 is a perspective view of an end plate, and FIG. 9 is a perspective view of a conventional example. 1 ... photosensitive printing plate, 10 ... stand, 12, 12A, 12B ... end plate,
14 …… Bolt, 24 …… Bottom base plate, 28 …… Caster, 30…
... Bolt, 32 ... Handle, 50A, 50B ... End plate, 51 ... Aggregate, 52, 52a ... Surface plate, 60 ... Bottom stand, 64 ... Stand plate, 64a
……aggregate.

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Jikken Sho 62-6035 (JP, Y2) Jikgaku Sho 55-20696 (JP, Y2) (58) Fields surveyed (Int. Cl. ⁶ , DB name) G03C 3/00 G03F 7/00-7/42

Claims (6)

(57) [Claims] An apparatus for transporting a group of photosensitive printing plates comprising a plurality of photosensitive printing plates having a photosensitive resin on a support in close contact with each other, wherein the photosensitive printing plate group is provided with a pair of end plates. The photosensitive printing plate group is fixed by interposing between the end plates, and the photosensitive printing plate group is fixed in a substantially vertical state, and among the end plates, the photosensitive printing plate is An end plate on which the group leans is installed on a table, and after removing the other end plate by releasing the sandwiching, from the surface side of the photosensitive printing plate group, the photosensitive printing plate A photosensitive printing plate group carrying device, wherein the photosensitive printing plate group can be taken out one by one. 2. The apparatus according to claim 1, wherein said photosensitive printing plates are interposed between said end plates without interleaving paper. 3. The platform has a lower surface for holding the printing plate group in a vertical orientation and a side surface for holding the printing plate group in a state of lying substantially horizontally, respectively. The device of claim 1 having a mounting foot. 4. The apparatus according to claim 1, wherein one of said end plates is fixed to a table, and said one end plate and said table are made of metal. 5. The apparatus according to claim 4, wherein said one end plate is formed by planarly framing a metal aggregate, and the plate is integrally provided on the photosensitive printing plate side. 6. The apparatus according to claim 5, wherein said plate is made of wood, metal or plastic.