JP2538146B2 - Positioning method, device and printing plate placement table for printing plate placement table - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for positioning a printing plate mounting table for mounting a printing plate to be supplied to a printing plate printing apparatus, a positioning device for the printing plate mounting table, and a printing plate mounting table.

[0002]

2. Description of the Related Art A printing plate (hereinafter referred to as a "PS plate") used in a newspaper rotary press or the like has a base material such as aluminum coated with a photosensitive material and is developed after an image is exposed by a printing apparatus. It is designed to be supplied to the rotary press.

Generally, a large number of PS plates are stacked in a horizontal or inclined state, mounted on a printing plate mounting table (hereinafter referred to as "skid") and fixedly packed. These PS plates are sent together with the skid from the printing plate manufacturing company to users such as newspaper companies. This skid is arranged in the loading section of the printing apparatus, and the PS plate mounted on the skid is supplied to the printing plate printing apparatus from the uppermost layer.
Usually, one skid is equipped with PS plates of the same size.

In the printing process on the PS plate, the size of the PS plate is selected according to the size of the original. For this reason, the user selects the most suitable size of PS plates from among various types and supplies them to the printing plate printing apparatus.

On the other hand, in response to the need for automation of the printing process on the PS plate, it has been considered that the printing plate printing apparatus is equipped with a plurality of skids. PS plates of different sizes are mounted on these skids. Further, it is considered that a large number of PS plates (for example, 750) are mounted on these skids at one time. A PS plate supply device that selects and supplies an optimum size PS plate from PS plates mounted on a plurality of skids to the printing plate printing apparatus is also under study.

When the printing plate placing table is positioned on the PS plate feeding device, for example, a plurality of groove-like concave portions provided in the printing plate placing table and a projecting portion facing each of these groove-like concave portions are provided. And are engaged at a predetermined position.

[0007]

However, when a large number of PS plates are mounted on one skid, the skid itself becomes strong so as to withstand the weight of the PS plates as well as the weight of the PS plates. The weight is increasing. Therefore, the conventional positioning device has a problem that it cannot operate accurately due to the weight of the skid and the PS plate. Especially when engaging a plurality of grooves and a protrusion, between each groove and a protrusion and between a plurality of grooves and a protrusion.
If there is a dimensional error between the protrusions, they will not engage in a normal state, and there is a risk that these parts will be damaged by the weight of the printing plate mounting table.

The present invention has been made in consideration of the above facts, and is for positioning a printing plate mounting table on which a large number of printing plates are mounted at a predetermined position, and a large number of printing plates with a simple structure. It is an object of the present invention to provide a printing plate placing table positioning method, a printing plate placing table positioning device, and a printing plate placing table that can be accurately positioned even when the printing plate placing table becomes heavy by mounting the.

[0009]

A method of positioning a printing plate placing table according to the present invention is to print from a printing plate placing table placed on a printing plate placing table loading section and having a plurality of printing plates mounted on a base. A method of positioning a printing plate mounting table for positioning the printing plate mounting table at a predetermined position for feeding a plate, comprising:
Either of the printing plate loading table loading section or the base of the printing plate loading table
The substantially conical recess provided on one side and the printing plate mounting
Installed either on the other side of the base loading section or the base of the printing plate mounting base.
A first rolling member that is eclipsed and enters the substantially conical recess.
Using the shaft supporting means provided with
When supported in a state, the printing by limiting the direction of rotation of the mounting table the shaft prior to the pivot point of the supporting means <br/> SL printing plate
It is characterized in that the plate mounting table is positioned . Further, in the present invention, a rotation direction of the printing plate mounting table is provided in either one of the printing plate mounting table loading section or the base of the printing plate mounting table, and the direction of the groove is a mountain shape toward the axial fulcrum. Limited by a groove-shaped recess and a second rolling member that is provided on the other of the printing plate mounting table loading section or the base of the printing plate mounting table and that enters the mountain-shaped groove-shaped recess. It
And at the two points of the shaft supporting means and the limiting means.
The printing plate mounting table is supported .

The printing plate placing table positioning apparatus of the present invention comprises:
A printing plate mount that positions the printing plate mount at a predetermined position in order to send out the printing plate from the printing plate mount that is mounted on the printing plate mount and has a plurality of printing plates mounted on the base. a positioning device table, and guide means for the draft along the loading direction base of the printing plate mounting table in a substantially horizontal state, the printing plate mounting table loading section or of said printing plate mounting table
A substantially conical recess provided on any one of the bases, and
What is in the printing plate loading table loading section or the base of the printing plate loading table?
A first one provided on the other side and into the substantially conical recess
Rolling and member, and pivotally supported means for pivotally supporting to be <br/> rotate along the base in a horizontal direction by, the printing plate mounting table loaded
Section or the base of the printing plate mounting table
A mountain-shaped groove-shaped recess in which the direction of the groove is directed to the shaft supporting means,
The printing plate mounting table loading section or the base of the printing plate mounting table
Which is provided on the other side and enters into the mountain-shaped groove-shaped recess
Supporting the printing plate mounting table by the second rolling member
Characterized in that and a limiting means for limiting at a predetermined position the rotation of the horizontal direction of the printing plate mounting table around the pivot point of the axial support means while. Further, the present invention is provided on both ends of the printing plate mounting table loading section in a direction orthogonal to the loading direction of the printing plate mounting table, and contacts the back surface of the base of the printing plate mounting table to mount the printing plate. It is characterized in that a guide member for guiding the mounting table in the loading direction is provided.

The printing plate placing table of the present invention is a printing plate placing table which mounts a large number of printing plates on a base and is loaded in a printing plate placing table loading section so that the printing plate can be sent out from the base. And a substantially conical recess formed on either the back surface of the base or the top surface of the printing plate mounting table loading portion , and the back surface of the base or the top surface of the printing plate mounting table loading portion. And a first rolling member that is provided on the other side and that fits into the substantially conical recess, supports the base rotatably in the horizontal direction, and mounts the back surface of the base or the printing plate mounting table. Provided in either one of the upper surface of the section and the groove direction facing the shaft supporting means and provided in the other of the back surface of the base or the upper surface of the printing plate mounting table loading section. The base is formed by a second rolling member that enters the mountain-shaped groove-shaped recess. To support the, characterized in that and a restricting means for restricting the rotation along the horizontal direction of the base around the said axial support means at a predetermined position.
Further, the present invention is characterized in that the substantially conical concave portion is provided in the first block-shaped member and the mountain groove-shaped concave portion is provided in the second block-shaped member. Further, the printing plate mounting table of the invention, the guide members provided on both sides of the direction orthogonal to the loading direction of the printing plate mounting table of the printing plate mounting table loading section, the rear surface of the base is in contact with It is characterized in that it is guided along a loading direction of the printing plate loading table of the printing plate loading table loading section.

[0012]

According to the method of positioning the printing plate mounting table of the present invention described above, when the printing plate mounting table is held in a substantially horizontal state,
And insert the first rolling member into the substantially conical recess.
Defined by the substantially conical recess and the first rolling member
Supports one point as the fulcrum, and marks with this fulcrum as the center.
The rotation of the plate mounting table is restricted at a predetermined position . One point of the printing plate placement table is positioned on the axis fulcrum , and this axis fulcrum is the center.
By limiting the rotation, the loading direction, the direction orthogonal to the loading direction, and the direction along the horizontal direction are determined and positioned.

Further, a method of positioning the printing plate mounting table of the present invention
According to the method, the second rolling member is inserted into the groove-shaped groove
And support the printing plate mounting table at two points with the shaft support means.
And the second rolling that entered the mountain-shaped groove
The movement of the member is restricted by the groove-shaped recess
Restrict the rotation of the printing plate mount to simplify the printing plate mount.
It allows simple and accurate positioning. Since the relative positions of these two points are not limited to each other, the printing plate placement table can be accurately positioned even if an error occurs in the distance between these positions.

The printing plate placing table positioning apparatus of the present invention comprises :
The printing plate mounting table at the location of Jo Tokoro supported by pivotally supporting means and limiting means.

[0015] journalled means of this printing plate mounting table positioning method and apparatus of the present invention uses the first rolling member against the substantially conical recess and a substantially conical recess, generally conical By inserting the first rolling member into the concave portion having a circular shape, the first rolling member can be pivotally supported around the center of the substantially conical concave portion. Further, the limiting means includes a mountain-shaped groove-shaped concave portion in which the direction of the groove is substantially toward the shaft supporting means and a second groove opposed to the mountain-shaped groove-shaped concave portion.
Uses a rolling member, when the second rolling member was enter the mountain-groove-like recess, movement can and along the groove direction of the recess of this <br/> the second rolling member to it, move in a direction perpendicular to the groove-like recess limits. Printing plate mount
In the filling section, the seal is provided by such a shaft support means and a restriction means.
Supports the plate mounting table and positions the printing plate mounting table
Since it is done, the part that positions and supports the printing plate placement table is
It can be reduced, and the distance between the shaft support means and the restriction means is large.
There are no restrictions, so if you strengthen only these, the printing plate
Accurate position without being damaged by the weight of the mounting table
A decision can be made.

The printing plate mounting table of the present invention includes a printing plate mounting table.
A substantially conical recess or first portion that forms a pivotal support means with the loading portion.
One of the rolling members and the mountain-shaped groove that forms the limiting means
Of either the recess or the second rolling member
It Place each of these against the other.
And the printing plate placement table is positioned at the predetermined position.
Supported.

The substantially conical concave portion and the mountain groove concave portion are
Formed on the first and second block-shaped members respectively, and placed on the printing plate.
The back surface of the base of the table or the printing plate mounting table facing the back surface
It can be placed in the filling section. Of the first block-shaped member
Place the printing plate with the first rolling member in the recess
When the load from the platform acts, the first rolling member is approximately conical
Moves relative to the center of the concave portion. This allows the printing plate
Position one point of the base of the mounting table on the printing plate mounting table loading section.
Can be pivoted.

The second block-shaped member is provided with a second recess.
With the rolling member of the
When the heavy weight acts, the second rolling member becomes a mountain-shaped groove-shaped recess.
Move relative to the top of. The second rolling member is concave
The movement in the direction of getting over the slope forming the part is restricted.
Then, the printing plate mounting table is positioned with respect to the shaft supporting means. This
When, the second rolling member is in the groove direction of the mountain-shaped groove-shaped recess.
Can be moved along, that is, along the top of the groove
Therefore, make sure that the top is oriented toward the pivotal support.
The printing plate loading table loading section and the base of the printing plate loading table.
Incorrect mounting between the shaft support means and the restriction means
Even if there is a difference, it can be positioned by supporting the printing plate placement table.
It will be possible.

The recess formed in the first block-shaped member
The part may have a conical shape, or may have a polygonal pyramid shape.
Part may be used, and further, a concave part may be formed in an arc shape.
When the first rolling member enters, such as
The base of the printing plate placement table is rotatably supported by moving relative to one point.
Anything you have will do. In addition, the mountain-shaped groove-shaped recess
The surface shape may be a triangular groove having a triangular shape, but is not limited to this.
Even if the second rolling member moves relative to the top and is positioned
And the first and second rolling members have the same shape.
Shaped rolling members can be used.

The means for transporting the printing plate placing table to the loading position, such as wheels, may be provided in the printing plate placing table or the positioning device for the printing plate placing table, but is performed by other means such as a forklift. But it's okay. by this,
By transporting a printing plate mounting table equipped with a large number of printing plates and loading and handing it to the positioning device of the printing plate mounting table as it is, the printing plate mounting table can be positioned almost at the same time. It is possible to perform efficient work with less burden on the user.

[0021]

Embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the printing plate mounting table 10 is shown.
Is configured such that a large number of printing plates (hereinafter referred to as “PS plates 12”) are stacked and mounted, and are loaded into the loading unit 50 of the printing plate mounting table. The printing plate mounting table 10 can mount a large number of (for example, 750) PS plates 12. The arrow W direction shown in each drawing is the width direction of the printing plate mounting table 10, and the arrow F direction is the vertical direction of the printing plate mounting table 10.

As shown in FIG. 1, the printing plate mounting table 10 is shown.
The mounting portion 16 is provided on the base 14 which is a thick plate.
In addition, in the lower part of this base 14, the vertical direction (direction of arrow F)
Legs 18 are provided at both ends of the center portion and both end portions in the width direction (arrow W direction). The lower sides of the legs 18 are connected by a floor plate 20, and a supporting member 36 having a substantially L-shaped cross section is joined to the lower surface of the base 14 inward in the vertical direction. .

When the printing plate mounting table 10 is stored, it is supported on the floor surface by the leg portions 18, and the legs 18 are deformed by the load of the printing plate mounting table 10 by the floor plate 20 and the supporting members 36. There is no such thing.

Further, a backing member 38 is fixed to the inner surface of each of the supporting members 36 on the lower surface of the base 14. A pair of forks 40 of a forklift are inserted into the lower surface of the base 14 when the printing plate mounting table 10 is moved. When the printing plate mounting table 10 is inserted from the outside in the width direction of the printing plate mounting table 10, the pair of forks 40 are inserted. Are in contact with the contact members 38. A support member 36 is located near the pair of forks 40 to regulate the insertion position of the forks 40.

The pair of forks 40 can be inserted into the lower surface of the base 14 from between the leg portions 18. In this case, the pair of forks 40 directly contacts the lower surface of the base 14. The leg portion 18 regulates the insertion position of the pair of forks 40. As a result, the printing plate mounting table 10 is arranged so that the position of the center of gravity is not biased.
Can be lifted by.

A loading section 16 provided on the upper surface of the base 14.
Includes a back plate 22 and a support plate 24. As shown in FIG. 2, the back plate 22 is erected on the upper surface of the base 14 with a slight inclination (15 degrees with respect to the vertical direction). The support plate 24 projects slightly upward from the end of the back plate 22 on the base 14 side so as to form a right angle with the back plate 22. Support members 26 and 28 are respectively interposed between the back plate 22 and the support plate 24 and the upper surface of the base 14. A plurality of pillars 30 are provided on the surface of the back plate 22 on the base 14 side.

The printing plate mounting table 10 can maintain a constant state by the supporting members 26 and 28 and the column portion 30 even if a large number of PS plates 12 are mounted on the mounting portion 16. In this embodiment, the back plate 22 is tilted, and the tilt of the back plate 22 causes the center of gravity of the printing plate mounting table 10 to be positioned substantially above the center of the base 14. Further, due to the inclination of the back plate 22, the printing plate mounting table 10 is
The amount of movement of the center of gravity is reduced in a state in which a large number of PS plates 12 are mounted and a state in which the PS plates 12 are not mounted. The inclination angle of the back plate 22 with respect to the vertical direction (vertical direction in the plane of FIG. 3) is not limited to this, but may be a state in which a large number of PS plates 12 are mounted and a state in which no PS plates 12 are mounted. Therefore, it is preferable that the movement of the center of gravity of the printing plate mounting table 10 is small.

The PS plate 12 is mounted on the mounting portion 16. The PS plate 12 is laminated along the inclined surface (hereinafter referred to as “mounting surface”) 32 of the back plate 22 in a state where one end of the outer periphery is in contact with the support plate 24 and is leaned against the back plate 22. It will be installed. In addition, the mounting surface 32 of the back plate 22 and the P of the lowermost layer
In order to protect the plate surface of the PS plate 12 between the S plate 12 and
A backing paper 33 such as cardboard is interposed. Note that interleaving paper or the like may be sandwiched in order to protect the plate surfaces of the stacked PS plates 12 against friction.

The printing plate mount 10 has a back plate 22 on which a large number of P
The S plates 12 are stacked and mounted, and after the PS plates 12 are wrapped in moisture-proof paper (not shown), plastic or wood (for example, thickness 1
A top plate 34 of a 0 mm veneer plate or the like) is overlaid on the PS plate 12, and a belt (not shown) is wound in the horizontal direction or the vertical direction for packaging. The belt, the top plate 34, and the moisture-proof paper can be removed after loading into the loading unit 50 described below.

A plurality of the loading sections 50 are arranged at a predetermined interval in the F direction, so that a plurality of printing plate placement tables 10 can be loaded at the same time. A supply device (not shown) for supplying the PS plate 14 to a plate material printing device (not shown) is provided adjacent to the loading section 50, and the PS plate 12 of the printing plate mounting table 10 is printed in sequence from the uppermost layer. It is designed to be supplied to the device.

As shown in FIG. 3, the loading section 50 is provided on a long rectangular stage 52 whose longitudinal direction is in the direction of arrow H. The stage 52 is fixed to the floor surface G by an anchor bolt or the like (not shown). Further, on the stage 52, from one end side in the arrow W direction (width direction),
A rectangular cut is formed along the width direction, and a loading port 54 of the printing plate mounting table 10 is formed.

An opening 56 at the widthwise end of the loading port 54
Is gradually expanded from the middle portion of the stage 52 in the width direction, and a guide surface 58 is formed. Also, the loading port 54
A side wall 60 and a back wall 62 are formed on the back side of the guide surface 58. The distance between the side walls 60 facing each other is slightly larger than the vertical dimension of the printing plate mounting table 10. In addition, the space between the opening 56 and the back wall 62 is equal to the size PS of the large plate.
The size is substantially the same as the dimension along the width direction of the printing plate mounting table 10 on which the plate 12 is mounted.

The printing plate mounting table 10 is adapted to be supported by the fork 40 through the opening 56 and inserted into the loading port 54. At this time, the printing plate mounting table 10 is guided between the side walls 60 facing each other by the guide surface 58 that gradually narrows the opening 56.

A guide roller portion 64 is disposed on the floor surface G side of the side wall 60. The guide roller portion 64 is provided between the vicinity of the middle portion of the guide surface 58 and the back wall 62, and a plurality of guide rollers 66 are arranged on the upper surface. The guide rollers 66 are arranged such that their respective axial directions are directed toward the side wall 60 and are parallel to each other. The guide roller 66 is rotatable about an axis and is also slidable in the axial direction .

A number of ball guides 68 are mounted on the side wall 60 above the guide roller portion 64. In the ball guide 68, a part of the outer peripheral surface of the ball that is freely rotatable is slightly projected from the side wall 60.

The printing plate mounting table 10 inserted into the loading port 54 through the opening 56 includes a guide roller 66 and a ball guide 6.
The guide 8 smoothly guides the inside of the stage 52.

A stopper 70 is provided at a substantially central portion of the back wall 62.
Are arranged. The stopper 70 has a protruding portion 70.
A also has a buffer function, and the movement of the printing plate mounting table 10 inserted up to the vicinity of the back wall 62 is gently stopped.

As shown in FIG. 4, a base plate 72 is attached to the floor surface G at the center of the loading port 54 along the width direction of the stage 52. The base plate 72 has ball casters 74, which serve as support means and restriction means, at both ends along the width direction of the stage 52.
76 are provided. As shown in FIG. 5 and FIG. 6, the ball casters 74 and 76 have the base plate 72.
Bracket 78 fixed to the upper surface of the steel ball 7
8A is partly rotatably housed and part is bracket 7
8 is projected.

On the other hand, as shown in FIGS. 3 and 4, blocks 80 and 82 corresponding to the ball casters 74 and 76 are provided on the bottom surface of the base 14 of the printing plate mounting table 10. These blocks 80, 82 are arranged between the legs 18 at both ends in the width direction at the center of the base 14 in the vertical direction.

As shown in FIG. 5, a block 80 corresponding to the ball caster 74 on the back wall 62 side of the loading port 54.
A substantially conical recess 80A is formed on the surface (lower surface) on the side corresponding to the ball casters 74. Further, as shown in FIG. 6, in the block 82 corresponding to the ball caster 76 on the opening 56 side of the loading port 54, a concave portion is formed by a triangular groove 82A on the surface on the ball caster 76 side. The top portion 82B of the triangular groove 82A is provided along the width direction of the printing plate mounting table 10, and the apex 80B of the block 80 is located on the extension line of the top portion 82B.

As shown in FIGS. 3 and 4, the ball caster 74 abuts on the concave portion 80A of the block 80, and when the weight of the printing plate mounting table 10 acts, the central portion of the ball caster 74 moves to the apex 80B along the inclination of the concave portion 80A. The steel ball 78A of the ball caster 74 is relatively moved and is housed in the recess 80A. Further, the ball caster 76 contacts the triangular groove 82A of the block 82 and moves to the top portion 82B along the inclination of the triangular groove 82A by the load of the printing plate mounting table 10 (apex 80B).
3), the steel ball 78A is housed in the triangular groove 82A. still,
The top 82B of the ball caster 82 is freely movable in the groove direction (arrow W direction).

As shown in FIG. 2, the center of the ball caster 74 is located at the apex 80B of the block 80, and the center of the ball caster 76 is located at the top 82B of the block 82. Are positioned relative to the loading section 50. Also, the printing plate mounting table 1
When 0 is positioned in the loading section 50, the weight of the printing plate mounting table 10 is supported by the ball casters 74 and 76 and the corresponding blocks 80 and 82. Causes the base 14 to be in a substantially horizontal state. In this state, the floor plate 20 of the leg 18 is
A slight gap is formed with respect to the guide roller 66. Further, when the base 14 of the printing plate mounting table 10 tries to tilt when positioning the printing plate mounting table 10, the guide rollers 66 contact the base plate 20 to prevent the printing plate mounting table 10 from tilting. It has become. Further, since the guide roller 66 is slidable along the axial direction thereof, the printing plate mounting table 10 is smoothly moved relative to the ball casters 80 and 82.

The ball casters 74, 76 are provided in the loading section 50.
From the printing plate mounting table 10 positioned by the blocks 80 and 82, the PS plate feeding device (not shown) can feed the loaded PS plates 12 to the plate material printing device in order from the uppermost layer.

Next, the operation of this embodiment will be described. In the mounting portion 16 of the printing plate mounting large 10, the PS plate 12 whose one end is in contact with the support plate 24 is leaned against the back plate 22 and mounted on the mounting surface 3
It is mounted by stacking two. This printing plate mounting table 10
The fork 40 of a transportation means such as a forklift is inserted below the base 14 and is supported and transported. In addition, when the printing plate placement table 10 is stored, a plurality of legs 1 are attached to the floor surface G.
It is performed in the state supported by 8.

The leg portions 18 are connected by the floor plate 20, and the connection with the base 14 is reinforced by the support members 36. Therefore, even if the printing plate mounting table 10 is mounted with a large number of PS plates 12, a plurality of leg portions 1
8 can reliably support each other in a fixed shape even with respect to the weight of the printing plate mounting table 10.

The PS plate 12 mounted on the printing plate mounting table 10 is supplied to a plate material printing device (not shown). PS version 1
When 2 is supplied to the plate printing apparatus, the printing plate mounting table 10 is positioned at a predetermined position of the loading unit 50 so as to face the PS plate supplying apparatus.

When carrying the printing plate mounting table 10,
The fork 40 is inserted from the width direction side of the printing plate mounting table 10, and the contact plate 38 disposed on the lower surface of the base 14 is in contact with the upper surface of the fork 40. The pair of forks 40 that have been inserted have a movement range restricted by the support member 34, and do not contact the blocks 80 and 82 provided on the lower surface of the base 14. When the fork 40 is inserted and lifted from the vertical direction of the printing plate mounting table 10, the fork 40 is inserted from between the leg portions 18 and the lower surface of the base 14 is lifted. Since the insertion positions of the pair of forks 40 in this case are regulated by the leg portions 18, the pair of forks 40 do not hit the blocks 80 and 82, and the center of gravity position of the printing plate mounting table 10 is not removed. .

In the printing plate mounting table 10, a pair of forks 40 are inserted from the block 82 side along the width direction of the printing plate mounting table 10 and lifted up, and the printing plate mounting table 10 is conveyed to the loading section 50. further. The printing plate mounting table 50 is inserted into the opening 56 from the opening on the width direction side of the stage 52 of the loading section 50.

The insertion from the opening 56 of the printing plate mounting table 10 is performed while the floor plate 20 of the printing plate mounting table 10 is positioned slightly above the guide roller portion 64 of the loading section 50.
The printing plate mounting table 10 inserted through the opening 56 is guided between the side walls 60 by the guide surface 58. A large number of ball guides 68 are arranged on the side wall 60, and the guide rollers 6
6 is used to guide the printing plate mounting table 10 to the back wall 62 side.

The printing plate mounting table 10 guided to the vicinity of the inner wall 62 comes into contact with a stopper 70 provided on the inner wall 62 to be buffered and prevented from being inserted. In this position, the ball casters 74 and 76 are located below the blocks 80 and 82 of the printing plate mounting table 10. In this state, the pair of forks 40 is lowered to lower the printing plate mounting table 10.
By lowering the printing plate mounting table 10, the printing plate mounting table 1
The ball casters 74 and 76 are in contact with the blocks 80 and 82 provided on the lower surface of the 0 base 14, respectively.

Further, by lowering the printing plate mounting table 10, the weight of the printing plate mounting table 10 supported by the pair of forks 40 is equal to that of the ball caster 74 and the block 82 accommodated in the recess 80A of the block 80. It is supported by the ball caster 76 inserted in the triangular groove 82A.

When a load is applied between the block 80 and the ball caster 74, the ball caster 74 relatively moves along the inclination of the conical recess 80A of the block 80,
The center of the ball caster 74 is located at the apex 80B. As a result, one point of the printing plate mounting table 10, that is, the apex 80B of the block 80 is positioned with respect to the loading section 50.

In addition to positioning the block 80, the block 82 and the ball casters 76 serve as the printing plate mounting table 1.
The weight of 0 causes the center of the ball caster 76 to have a triangular groove 8
Located at the top 82B of 2A. The ball caster 76 is
The weight of the printing plate mounting table 10 acts on the block 82 to move the center of the triangular plate 82A relative to the top 82B along the inclination of the triangular groove 82A. As a result, the printing plate mounting table 10 is positioned with the top 80B of the triangular groove 80A hindering movement of the block 80 in the rotational direction about the apex 80B of the block 80.

The positioning by the blocks 80 and 82 accurately determines the position of one point by the block 80,
The block 82 determines only the position in the rotation direction (direction of arrow A shown in FIG. 3) around the position. Therefore, even if there is an error in the distance between the blocks 80 and 82 and the distance between the centers of the ball casters 74 and 76, accurate positioning can be performed with the block 80 as the base point. The triangular groove 8 formed in the block 80
Instead of 2A, a groove having a polygonal cross section, an arc shape, or the like may be formed.

As a result, the loading section 5 of the printing plate mounting table 10 is
Positioned to zero. Further, in this state, the weight of the printing plate mounting table 10 is equal to that of the block 80 and the ball caster 7.
4 and the block 82 and the ball caster 76.

At the time of inserting and positioning the printing plate mounting table 10 into the loading section 50, the base 14 of the printing plate mounting table 10 is
The horizontal state is maintained. When the base 14 of the printing plate mounting table 10 tilts, the floor plate 20 of the leg portion 18 abuts the guide rollers 66 to prevent the tilting, and the base 14 is kept substantially horizontal.
Growling . In addition, the guide roller 66 is used for the floorboard 20.
Even in the contact state, the blocks 80 and 82 and the ball casters 74 and 76 slide along the axial direction so that the printing plate mounting table 10 can be smoothly moved for positioning. Therefore, even if an attempt base 14 is tilted, the base 14 is substantially a horizontal state is maintained, the Ru performed reliably positioning of the printing plate mounting table 10.

The guide means for guiding the printing plate mounting table 10 horizontally into the loading port 54 is provided with a guide roller 66 on the side wall 60 and a ball guide 68 on the guide roller portion 64.
May be provided. Also, the guide means is not limited to this,
Other methods can be applied as long as the printing plate placement table 10 can be guided horizontally to a predetermined position.

When the printing plate mounting table 10 is positioned in the loading section 50, the P mounted on the printing plate mounting table 10 is set.
The S plate 12 corresponds to a PS plate delivery device (not shown). As a result, the PS plate 12 mounted on the printing plate mounting table 10 is sent out from the uppermost layer.

In the printing plate mounting table 10, since the back plate 22 which leans the PS plate 12 is inclined, the PS plate 1 mounted on the printing plate mounting table 10 is inclined.
Even when the remaining amount of 2 becomes small, the position of the center of gravity hardly moves. Therefore, the printing plate placement table 10 loaded in the loading section 50 is in a state of being supported by the ball casters 74 and 76. Therefore, in the loading section 50, the weight of the printing plate mounting table 10 does not directly act on other parts such as the ball bearings 66, so that the burden on the weight of the printing plate mounting table 10 can be reduced. The device itself is strong and does not need to be upsized.

Any of the blocks 80 and 82 provided on the printing plate mounting table 10 and constituting the shaft supporting means and the limiting means may be arranged on the back wall 62 side. Further, in this embodiment,
The example in which the blocks 80 and 82 are provided on the printing plate placing table 10 and the ball casters 74 and 76 are provided on the loading section 50 has been described, but the ball casters 74 and 7 are provided on the printing plate placing table 10.
6 may be arranged and the blocks 80 and 82 may be provided in the loading part 50 so as to correspond to the ball casters 74 and 76, respectively.

In this embodiment, the PS plate 12 is attached to the back plate 22.
Printing plate mounting table 1 that is tilted and mounted while leaning against the table
However, the shape of the printing plate mounting table is not limited to this, and a so-called flat stacking printing plate mounting table in which the PS plates 12 are stacked in a horizontal state is also applicable.

[0063]

As described above, according to the method of positioning the printing plate mounting table of the present invention, the printing plate mounting table can be accurately positioned at a predetermined position.

Further, according to the printing plate placing table and the positioning device of the printing plate placing table of the present invention, it is possible to accurately position a heavy printing plate placing a large number of printing plates with a simple structure. There is an excellent effect that can be.

[Brief description of drawings]

FIG. 1 is a perspective view of a printing plate mounting table according to the present embodiment.

FIG. 2 is a side view of the printing plate placement table according to the present embodiment.

FIG. 3 is a perspective view of a main part of a positioning device for a printing plate mounting table according to the present embodiment.

FIG. 4 is a front view of a main part of the printing plate placement table according to the present embodiment.

FIG. 5 is a front view of a main portion showing a shaft support unit according to the present embodiment.

FIG. 6 is a front view of a main part showing a limiting means according to the present embodiment.

[Explanation of reference symbols] 10 printing plate mounting table 12 PS plate (printing plate) 14 base 16 loading section 18 legs 40 fork 50 loading section (positioning device) 64 guide roller section (guide means) 68 ball guide (guide means) 70 stopper 74 ball caster (shaft support means) 76 ball caster (limitation means) 80 block (shaft support means) 82 block (limitation means)

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-3-153258 (JP, A) JP-A-63-106756 (JP, A) Actually open 2-55236 (JP, U) Actually open-62- 199745 (JP, U)

Claims (7)

(57) [Claims] 1. A printing plate mounting table is placed at a predetermined position in order to send out the printing plate from the printing plate mounting table mounted on the printing plate mounting table loading section and having a plurality of printing plates mounted on the base. A method of positioning a printing plate placing table for positioning, comprising a substantially conical recess provided in either the printing plate placing table loading section or the base of the printing plate placing table, and the printing plate placing table loading. Section or a first rolling member provided on the other of the bases of the printing plate placement table and entering the substantially conical recess, the printing plate placement table in a horizontal state A method of positioning a printing plate mounting table, characterized in that when supported, the printing plate mounting table is positioned by limiting the rotation direction of the printing plate mounting table with the shaft supporting means as a shaft fulcrum. 2. A mountain-shaped groove in which the direction of rotation of the printing plate placing table is provided in either the printing plate placing table loading section or the base of the printing plate placing table, and the direction of the groove is toward the shaft fulcrum. And a second rolling member that is provided on the other of the printing plate mounting table loading section or the base of the printing plate mounting table and is inserted into the groove-shaped recessed portion. 2 of the shaft supporting means and the limiting means.
The method for positioning the printing plate mounting table according to claim 1, wherein the printing plate mounting table is supported by points. 3. The printing plate placing table is placed at a predetermined position in order to send out the printing plate from the printing plate placing table placed on the printing plate placing table loading section and having a plurality of printing plates mounted on the base. A positioning device for a printing plate mounting table for positioning, wherein the base of the printing plate mounting table is in a substantially horizontal state along a loading direction.
A guide means for the draft Te, base of the printing plate mounting table loading unit or the printing plate mounting table
The substantially conical recess provided in either one of the
Either the plate mounting table loading section or the base of the printing plate mounting table
The first rolling member provided on the other side and entering the substantially conical recess.
A pivot member for rotatably supporting the base in a horizontal direction by means of a beam member, the printing plate mounting table loading section or the base of the printing plate mounting table.
The direction of the groove provided on either one of the
Ridge-shaped groove-shaped recess and the printing plate placement table loading section or front
The chevron provided on either of the bases of the printing plate mounting base
A second rolling member Komu to enter the groove-like recess, before the
The printing plate mounting table is supported, and the horizontal rotation of the printing plate mounting table about the pivot point of the pivotal support means is predetermined.
A positioning device for a printing plate mounting table, comprising: a limiting means for limiting the position. 4. The printing plate placing table is provided at both ends of the printing plate placing table loading section in a direction orthogonal to a loading direction of the printing plate placing table, and abuts on a back surface of a base of the printing plate placing table. The printing plate mounting table positioning device according to claim 3 , further comprising a guide member for guiding the sheet in a loading direction in a substantially horizontal state. 5. A printing plate mounting table which mounts a large number of printing plates on a base table and is loaded in a printing plate mounting table loading section so that the printing plate can be sent out from the base table. The substantially conical recess formed on either the back surface or the upper surface of the printing plate mounting table loading section, and the substantially conical recess provided on the other surface of the back surface of the base or the upper surface of the printing plate mounting table loading section. A first rolling member that fits into a conical recess, and a shaft support means that rotatably supports the base in a horizontal direction, and either the back surface of the base or the top surface of the printing plate placement table loading section. On the other side of either the back surface of the base or the upper surface of the printing plate mounting table loading portion, and the groove-shaped groove-shaped recess provided in the While supporting the base by the second rolling member that enters, Printing plate mounting table to a limiting means for limiting the rotation along the horizontal direction of the base around the journalled means at a predetermined position, further comprising a said. 6. The method according to claim 5, wherein the substantially conical recess is provided in the first block-shaped member, and the mountain-shaped groove-shaped recess is provided in the second block-shaped member. The printing plate mount described. 7. The back surface of the printing plate mounting table is brought into contact with guide members provided on both sides of the printing plate mounting table loading section in a direction orthogonal to a loading direction of the printing plate mounting table. The printing plate mounting table according to claim 5 or 6 , wherein the printing plate mounting table is guided along a loading direction of the printing plate mounting table.