JPH0348239A - Carrying device for photosensitive printing plate - Google Patents

Abstract

PURPOSE:To prevent a photosensitive printing plate from flawing and to reduce the weight of an end plate which serves as a lid by fixing one end plate to a base and making the other end plate detachable, and consisting the other end plate with a supporting body where an aggregate material is framed and a face plate which is interposed between this base and the surface-side photosensitive printing plate of photosensitive printing plate groups. CONSTITUTION:An end plate 14 and a slanting base plate 16 intersecting orthogonally with the plate 14 are formed of face plates 14B and 16B made of thin stainless steel plates and both are united integrally by welding, etc. Then the photosensitive printing plate groups 1, 1... are pinched on the base plate 16 between the end plate 14 and the other end plate 20. The end plate 20 is constituted of the aggregate material 20A made of rectangular steel and the thin surface plate 20B made of plastic such as vinyl chloride. Consequently, a printing plate 1 is hardly flawed when handled and the weight of the end plate 20 which serves as the lid is reduced.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a conveying device for photosensitive printing plates.

[Conventional technology]

Generally, a photosensitive printing plate is one in which a photosensitive resin is formed on a support such as an aluminum plate. This photosensitive printing plate is usually quite large, about 1 m x 1 m, and weighs 500 to 1000 g per sheet, which is quite heavy.

Conventionally, when storing or transporting photosensitive printing plates, an appropriate number of plates were stacked horizontally with a mount interposed therebetween.

However, using a mount to prevent scratches,
Workability is extremely poor when stacking and taking out.

Therefore, in recent years, as shown in Fig. 4, direct photosensitive printing plates 1, 1, . 3,
3. The plates are tightly fastened to form a pallet to prevent the photosensitive printing plate from shifting due to vibrations and damaging the photosensitive surface.

In this case, one end plate 2 is used as a pallet stand, and at least one side between both surfaces of the photosensitive printing plate 1.1 group and the end plates 2, 2 is covered with cardboard to prevent damage. There are 4. Furthermore, the number of stacked sheets is usually 700 to 1.
About 500 sheets, for example, 1000 sheets when transporting.
Since each sheet weighs between 500 kg and 1000 kg, a forklift is used.

[Problem to be solved by the invention]

However, when using the above-mentioned end plates and stacking photosensitive printing plates horizontally, the first problem is that during storage,
A large installation area of 1mXlm or more is required. Second, when a group of 700 to 1,500 printing plates that has been transported near a plate-making machine (image forming machine, exposure machine) is actually applied to the plate-making machine, it is necessary to carry the After removing the bolts 3, the photosensitive resin surface must be carefully placed on a stand near the plate-making machine, and then each sheet must be taken out and used, resulting in poor work efficiency. and should be handled with care. Moreover, even if there are only about 50 sheets, it is quite heavy, which puts a heavy burden on the worker. Furthermore, in order to take out sheets in units of 50 sheets, for example, it is necessary to insert a corrugated cardboard between each 50 sheets when stacking them in advance, which leads to an increase in cost.

Thirdly, in relation to the second point, a group of 700 to 1,500 sheets must be transported by forklift and then manually transported by workers before being sent to a plate-making machine, making the logistics less smooth. .

Fourth, if the end plates 2, 2 are not fastened sufficiently, the photosensitive resin surface will easily be damaged if a certain printing plate is displaced during transportation or the like. In addition, since there is no backing paper, if there is small dust between the printing plates, if the end plates are tightly tightened, the dust will easily damage them. Moreover, even before tightening, the lower printing plate is subject to the load of the upper printing plate,
A large number of photosensitive printing plates that can be damaged are directly brought into close contact with each other and interposed between the end plates without a mount, and the end plates are fastened to fix the group of photosensitive printing plates, and this is substantially The transport device is placed vertically on a portable platform.
This was proposed as Japanese Patent Application No. 63-265849.

However, in this case, what is required of the end plate is its clamping force (if bolts are used, the bolt fastening force ) and should not be deformed during this process. However, when plywood is used as the end plate, although it has the advantage of being inexpensive, thick plywood must be used to provide the required strength (including rigidity). If the end plate is made of such thick and therefore heavy plywood, especially if the removable end plate that serves as the lid is made of thick plywood, it will be difficult for the operator to attach and detach the heavy end plate each time a group of photosensitive printing plates is installed or taken out. It will put a burden on you.

The main object of the present invention is that when it is installed, it occupies a small area in plan view, and that it is possible to take out each printing plate as it is after being transported, which is extremely superior in terms of workability and efficiency, and that there is no damage during handling. It is an object of the present invention to provide a conveying device that has almost no weight and can reduce the weight of an end plate serving as a lid.

[Means to solve the problem]

The above-mentioned problem has been solved by interposing a large number of photosensitive printing plates having a photosensitive resin on a support between end plates in close contact with each other, and by fastening the end plates to form a group of photosensitive printing plates. In a conveying device which is fixed and placed on a table in a substantially vertical position, said one end plate is fixed to the table and the other end plate is removable, said other end plate being attached to the bone. This problem can be solved by comprising a support made of material and a surface plate interposed between the support and the photosensitive printing plate on the front side of the group of photosensitive printing plates.

[Effect]

In the present invention, it is possible to install it on a stand without a backing paper. Even without a mount, the photosensitive printing plates are installed vertically on the table, so their lower end surfaces are in contact with the table due to their own weight, so they can be oriented horizontally to the left, right, and upward. The printing plate hardly shifts and is prevented from being scratched. As a result, even if the end plates are somewhat loosely tightened, the printing plate will not move easily and will not be damaged.
In addition, loosely tightening the plates increases the effect of preventing scratches even if dirt gets between the printing plates. In this way, the ability to install an interleaving sheet remover eliminates the work of inserting a mount and removing the mount when taking out a printing plate, improving work efficiency.

Furthermore, a group of printing plates is installed vertically on a table, and a single printing plate has a large external shape of about 1 m x lm, but a thin thickness of about 2 to 38 cm, so even if 1000 sheets are stacked on top of each other, However, the total thickness is 200 to 300 ann, and the installation space is small.

What's more, when a group of printing plates is transported vertically to the plate-making machine, the plate-maker can take them out one by one and put them through the plate-making machine, greatly improving work efficiency from transport to loading them on the plate-making machine. do.

Furthermore, as shown in the embodiment in the above-mentioned application, it is inexpensive if the base and end plates are made of plywood. However, plywood is not strong, and when a long bolt is fastened between the end plates, the bolt and nut portions tend to deform. Therefore, even if this is prevented by interposing a washer, deformation cannot be completely prevented. Moreover, since plywood lacks rigidity, it is easily deformed in terms of surface. As a result, the fastening force is unevenly distributed, and the fastening force does not act on the entire surface of the photosensitive printing plate, leading to displacement of the photosensitive printing plate group and the occurrence of defects as a result. On the other hand, when using plywood, thick plywood must be used in order to increase strength, but thick plywood increases weight.

In contrast, in the present invention, the end plate is made of a support made of aggregate and a surface plate interposed between the support and the front side photosensitive printing plate of the photosensitive printing plate group. ．． It has been organized since then.

Therefore, even if a thin surface plate is used, the surface plate is supported from behind by the framework support, and therefore has sufficient strength and rigidity. the result,
The weight of the end plate is reduced, and the work efficiency when a worker installs and takes out a photosensitive printing plate is improved.

Furthermore, compared to the case of using plywood alone, the strength and rigidity are increased, there is no deformation of the plywood itself, and it is possible to perform uniform fastening without shifting or scratching the photosensitive printing plate group.

[Specific structure of the invention]

The present invention will be explained in more detail below with reference to specific examples shown in the drawings.

In the drawings, reference numeral 1 denotes a photosensitive printing plate, and these photosensitive printing plates 1.1...group are such that the support of each adjacent printing plate 1 is in direct contact with the photosensitive resin surface, preferably without a mount. , and installed on a portable stand, which will be described in detail below, as an integrated unit.

The base 10 is formed into a rectangular plane by appropriately combining angles. A support reinforcing member 12 is erected on the base 10. This reinforcing material 12 is formed of, for example, square steel, and is fixed to the bottom pedestal 10 by welding or the like. In addition, the end plate l4 which is tilted for the stability of the printing plates 1, 1, . Aggregate l4A with a framework consisting of
, 16A, and surface plates 14B, 16B made of a thin stainless steel plate or the like fixed in advance to the surface on which the photosensitive printing plate 1 comes into contact.
The two are mutually integrated by welding or the like. 18 is a spacer made of a steel plate.

Furthermore, the photosensitive printing plate groups 1.1... are clamped by the end plate 14 and the other end plate 20 on the plywood l6.

This end plate 20 is made of aggregate 20A made of square steel and a thin material made of plastic such as vinyl chloride, etc.
It consists of a surface plate 20B below the plate. This surface plate 20B may be a metal plate in addition to a plastic plate. In particular, this is because the plastic plate is more lightweight than the case where a metal plate is used.

The photosensitive printing plate group 1.1... is, for example, a long bolt 2.
2, and is clamped between the end plates l4 and 20. In this connection, the end plate 14 and the end plate 20
A bolt insertion hole 24 is formed in the. 26 is a washer.

On the other hand, a required number of casters 28 are provided at the lower part of the base 1O for convenience of transportation.

Once the printing plates 1.1... are placed on the table in this way, they are moved along the floor using casters 28, or by using a forklift or the like if there are no casters, until they are near the plate making machine (not shown). After moving, during plate making work, the bolts 22, 22... can be loosened to take out each sheet and put it into the plate making machine.

Furthermore, in order to move these to near the plate making machine, hand handles 3 are provided along with the aforementioned casters 28.
0 is attached. Since this handle 30 may get in the way during storage, it is preferable to attach the pin to the receiving tube 32 fixed to the bottom stand 10, etc., as shown in FIG.
It is preferable to make it detachable by inserting and removing No. 4. The attachment/detachment means is not limited to this example.

In the present invention, a metal material of other shape such as an angle is used as the aggregate, a metal material other than steel is used as the metal material,
It is possible to change the frame structure and shape of the aggregates to other ones by using appropriate hardware without welding the aggregates together.

In the present invention, when 100 or more printing plates, more preferably 300 or more printing plates are provided on the table of the conveying device,
Especially the advantages are great.

Photosensitive printing plates are generally produced by coating a photosensitive composition on a support such as an aluminum plate, irradiating it with active light such as ultraviolet rays through a negative image, and polymerizing or crosslinking the irradiated areas to create a phenomenon. The area that is not irradiated with light is eluted into the image liquid, and each area is divided into an image area that repels water and receives oil-based ink, and a non-image area that accepts water and repels oil-based ink. It can be obtained by

In this case, the photosensitive composition is particularly negative-type P
For S plates, 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 in combination with at least a binder resin.

Further, as the photosensitive resin, quinodiazide resin is typically used in the positive type PS plate.

As the binder resin, polymers having a phenolic OH group and a carboxyl group, such as novolac resin, polyparahydroxystyrene, and styrene/maleic anhydride copolymer, are mainly used.

In addition, photopolymerizable, photocrosslinkable photosensitive compositions, etc. can also be used.

In any case, a printing plate in which the photosensitive resin as described above is provided on a support, such as an aluminum plate, is manufactured by processes such as degreasing of the support, graining, electrolytic polishing, anodizing, washing, drying, After completing a series of steps such as applying a photosensitive liquid, cutting, and inspecting the surface, the product is placed vertically on the portable stand shown in each of the above-mentioned examples without a mount.

〔Effect of the invention〕

As described above, according to the present invention, when installed, the planar area occupied is small, and the transported material can be taken out as it is, one printing plate at a time, which is extremely superior in terms of workability and efficiency. There is almost no damage caused by contact, and the weight of the end plate serving as the lid can be reduced.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an end plate according to a specific example of the present invention, FIG. 2 is a front view, FIG. 3 is a side view thereof, and FIG. 4 is a perspective view of a conventional example. DESCRIPTION OF SYMBOLS 1... Photosensitive printing plate, 10... Bottom stand, l4... One end plate, 20... Other end plate, 20A... Aggregate,
20B... Surface plate, 22... Fastening bolt. 4 Figure 2

Claims (1)

[Claims] (1) A large number of photosensitive printing plates having a photosensitive resin on a support are placed in close contact with each other and interposed between the end plates, and the end plates are fastened to fix the group of photosensitive printing plates. and in a conveying device installed on a platform in a substantially vertical state, one end plate is fixed to the platform, the other end plate is detachable, and the other end plate is attached to the aggregate. A support made of
A photosensitive printing plate conveying device comprising a surface plate interposed between the support and the front side photosensitive printing plate of the photosensitive printing plate group.