JP2586382Y2 - Sheet material accumulation device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a planographic printing plate stacking apparatus for stacking a sheet material such as a developed planographic printing plate.

[0002]

2. Description of the Related Art Among lithographic printing plates used for lithographic printing, for example, a lithographic printing plate in which a photosensitive material is applied to a thin metal plate such as a PS plate is exposed by bringing a positive film into close contact with the printing plate. After that, the photosensitive layer is subjected to a developing process, and the printing plate after the developing process is carried into a dryer and dried to prepare a lithographic printing plate. The lithographic printing plate after drying detected from this dryer is accumulated in a lithographic printing plate accumulation device provided subsequent to the dryer.

Since such an apparatus has already been filed by the present applicant as Japanese Utility Model Application No. 2-406016, it will be described with reference to a side view of a lithographic printing plate stacking apparatus shown in FIG.

The lithographic printing accumulating apparatus A comprises a pair of upper and lower guide rollers 2 connected to a carry-out port 1 of a dryer C connected to a lithographic printing plate developing apparatus B; And a fixed slide 3 having an inclined surface 3a of about 45.degree. And a transfer surface formed following the inclined surface 3a of the fixed slide 3 and having a tilt plate rotating shaft 4 at the lower end. A tilting plate 5 as a means, a rotating means 6 for rotating the tilting plate 5, and a plate receiving table 7 having an inclined surface plate 7a of about 70 ° disposed opposite to the fixed slide portion 3 and the tilting plate 5; And

In FIG. 7, the planographic printing plate P carried out from the carry-out port 1 of the dryer C is sent to a fixed slide 3 while being supported by guide rollers 2. This guide roller 2
The upper guide roller 2a and the lower guide roller 2b are arranged in a zigzag manner so as to be separated from each other in the transport direction. The upper guide roller 2a presses the upper surface of the lithographic printing plate P, and when the lithographic printing plate P comes off from the exit roller 1a provided at the carry-out port 1 of the dryer C, the rear end thereof jumps up and the dryer C It is prevented from being damaged by colliding with the exterior plate 1b.

The lower guide roller 2b rotates in synchronization with the transport speed of the lithographic printing plate P because the lower guide roller 2b is configured to always support the lower surface of the lithographic printing plate P sent out in a protruding state. A pulley 2d is fixed to the end of the rotating shaft 2c of the lower guide roller 2b, and transmits the rotation of the lower guide roller 2b to the rotary encoder 20 via a belt 2e. The rotary encoder 20 is connected to the transport speed control means 21 and sends a signal synchronized with the transport speed of the lithographic printing plate P passing through the guide roller 2.

The member forming the inclined surface 3a of the fixed slide portion 3 and the face plate 5a of the tilt plate 5 is preferably a formed panel in which a flat panel is provided with an uneven surface for preventing plate adsorption by static electricity or the like.

The width d of the conveyor 8 is about 15 mm, and is arranged on the face plate 5a at intervals of 150 to 200 mm. Conveyor 8
May be substantially the entire length of the face plate 5a of the tilt plate 5, but the length of the guide roller 2 at the upper end of the fixed slide portion 3 is considered in consideration of the length of the lithographic printing plate P of the minimum size in the transport direction. The cutout 5c is provided at about 400 to 500 mm in the conveying direction from the lower side.

[0009] The belt 8a of the conveyor 8 is wound around an upper pulley 9a provided at the upper end of the notch 5c and a lower pulley 9b provided at the lower end of the notch 5c.
A drive belt wheel is fixed to a common belt rotation shaft 10 through which each of the lower pulleys 9b is inserted. The drive belt wheel is wound around the drive belt 12 to transmit the rotation of the belt drive motor 13 to each of the lower pulleys 9b. Therefore, the plurality of conveyors 8 simultaneously rotate in the same direction according to the rotation of the belt drive motor 13.

The belt 8a of the conveyor 8 rotates in the direction of inclination of the face plate 5a, and its upper rotating surface 8b is the same as the face plate 5a of the tilt plate 5.

An upper sensor small hole 5d and a lower sensor small hole 5e are formed in the face plate 5a near the upper end and the lower end of the cutout 5c, respectively. The upper plate detection sensor 14a is provided in each of the upper sensor small holes 5d, and the lower sensor small hole 5d.
e, a lower plate detection sensor 14b is provided below the face plate 5a, and the upper plate detection sensor 14a and the lower plate detection sensor 14b are connected to the drive control means 15, respectively.
These plate detection sensors 14a and 14b may be photoelectric type or micro switches.

The drive control means 15 is connected to the belt drive motor 13 and rotates or stops the conveyor 8 based on a plate detection signal generated by the plate detection sensors 14a and 14b. The drive control means 15 is also connected to the transport speed control means 21,
Belt drive motor based on the signal of the rotary encoder 20
13 rotation speeds are controlled.

The belt 8a of the conveyor 8 has an inclined surface 3a
A stopper 16 for holding a lower end portion of the lithographic printing plate P which is falling is projected, and the drive control means 15 is provided with the stopper 16.
Is controlled to be located at the upper end of the notch 5c when the conveyor 8 is stopped, that is, when the conveyor 8 is on standby.

A link mechanism 17 constituting the rotating means 6 is mounted on the back surface of the tilt plate 5 and is connected to a tilt plate drive motor 18 for rotating the link mechanism 17. The tilt plate drive motor 18 is connected to the drive control means 15, and the plate detection sensor
The tilt plate 5 based on the plate detection signal generated by 14a, 14b
To make a reciprocating angular movement. This angular movement is performed about the tilt plate rotation shaft 4 attached to the lower end of the tilt plate 5,
The tilt plate 5 rotates from the standby position, stops at a position substantially parallel to the inclined surface plate 7a of the plate receiving table 7 as a placing means, and then returns to the standby position again.

A plate support member 19 protrudes from the lower end of the inclined face plate 7a of the plate receiving table 7, and supports up to fifteen to twenty lithographic printing plates P in a maximum.

Next, the operation of the lithographic printing plate stacking apparatus A will be described. The lithographic printing plate P ejected from the carry-out port 1 of the dryer C in a state of being jumped out is conveyed while the lower surface thereof is supported by the lower guide roller 2b. This lower guide roller 2b
Is transmitted to the transport speed control means 21 via the rotary encoder 20.

On the other hand, the lithographic printing plate P conveyed from the guide roller 2 to the fixed slide portion 3 is sent onto the face plate 5a of the tilt plate 5 while sliding on the inclined surface 3a. At this time, when the planographic printing plate P passes over the upper plate detection sensor 14a of the tilt plate 5, the upper plate detection sensor 14a sends a plate detection signal to the drive control means 15. The drive control means 15 rotates the belt drive motor 13 after a lapse of a predetermined time after receiving the plate detection signal, and rotates the belt 8a while bringing the lower end of the planographic printing plate P into contact with the stopper 16.

The rotation speed of the belt 8a is controlled to be equal to the rotation speed of the lower guide roller 2b transmitted to the transfer speed control means 21, ie, the transfer speed of the planographic printing plate P during transfer of the dryer C. It is set by means 21. The signal of the set conveyance speed is sent to the drive control means 15, and the belt drive motor 13 rotates at a predetermined rotation speed.

As described above, the lithographic printing plate P is supported by the stopper 16 of the conveyor 8 regardless of its size, while supporting the lower end of the lithographic printing plate P at a predetermined speed adjusted to the transport speed of the lithographic printing plate developing apparatus B and the dryer C. It will be transported at a speed.

When the lithographic printing plate P is conveyed by the conveyor 8 and passes over the lower plate detection sensor 14b at the lower end of the tilt plate 5, the lower detection sensor 14b sends a plate detection signal to the drive control means 15. The lithographic printing plate P is a plate support member 19 of the plate support 7.
Abuts against the upper inclined surface plate 7a and stops.

After receiving the plate detection signal, the drive control means 15 rotates the tilt plate driving motor 18 to angularly move the tilt plate 5 via the link mechanism 17 to move the lithographic printing plate P to the plate receiving tray 7.
On the inclined surface plate 7a.

Thereafter, under the control of the drive control means 15, the belt drive motor 13 rotates the belt 8a to the initial standby position, and the tilt plate drive motor 18 moves the tilted plate 5
To the original standby position and stop.

[0023]

[Problems to be Solved by the Invention] Such conventional inventions have played a role as an integrated device for many PS plates, but even if only the PS plates are considered, the range of the thickness is different. Depending on the size, it can range from 0.1 to 0.3mm, and the strength of the waist is quite different. The bending when the end is held and the other part is in a free state is different.

Therefore, the leading edge of the PS plate as the sheet material P conveyed out of the dryer C becomes irregular due to differences in physical properties such as thickness as shown by arrows in the side view of FIG. Stopper as provided holder
In order for the tip to be held exactly in conformity with the top of the stopper 16, as described above, the detector 14a is provided just before the stationary stop position of the stopper 16 to detect and start the transport belt. In some cases, the vehicle may move upward without engaging with the stopper 16. In this case, the positioning of the leading end of the sheet material by the stopper during the conveyance becomes unstable, and there is a possibility that free fall may start or the sheet may be inclined and fed obliquely.

Therefore, it is desirable that the sheet material be conveyed straight along the surface of the conveying belt 8a regardless of its thickness.

That is, it is desirable that the sheet material be regulated so as to pass through a certain path without breaking a predetermined conveying surface even if the sheet material has a difference in thickness.

Further, even if the sheet material has a different thickness and a different stiffness, if the same path is fed along the conveying belt surface by the guide, the tip of the sheet material is stably held by the stopper 16 and the stopper is provided. The detector provided immediately before 16 (holder) can be made unnecessary.

That is, the encoder 20 for detecting the rotational speed of the leading end of the sheet material shown in FIGS. 7 and 8 is used. It can also serve as detection.

Providing a large number of such sheet material detecting means is not preferable in terms of manufacturing and maintenance of the apparatus because the number of adjustment points increases.

It is not desirable that stable conveyance and unstable conveyance exist due to the difference in thickness of the sheet material.
If the height of the stopper (holder) is increased in order to avoid this, the transporting means becomes large, and there is a danger.

An object of the present invention is to provide a sheet material accumulating apparatus which solves such problems.

[0032]

Means for Solving the Problems] This object is solved by the following technical means.

[0033] In an integrated apparatus for stacking sheet over preparative material into many vertical direction, a predetermined sheet material that has been fed from the previous step
First detecting means and the holder for supporting the front end of the deflection sheets material by the direction changing guide means for detecting the tip position and the conveying speed of the sheet material to be fed and the direction changing guide means for guiding following the transport path The conveying means by the endless belt and the holder come to the bottom,
A second detecting means for detecting a position where the leading end of the sheet material is apart from the holder, and a tilting means parallel to the belt and inside the belt surface and capable of being inverted with its lowermost end as a support shaft; And a placing means on which the sheet material is placed, wherein the operation of the endless belt is performed by the first detecting means.
The tilting means performs a reversal and a return swing by a signal of the second detecting means, and the tilting means has an upper support shaft at the center thereof.
A sheet material accumulating device comprising a sub-tilt means rotatable .

[0034]

[Embodiment of the Invention] The embodiment of the invention is described below.
This will be described in detail with reference to the accompanying drawings.

FIG . 1 is a side view of a planographic printing plate stacking apparatus using a PS plate as a sheet material according to the present invention. The lithographic printing plate accumulating apparatus A has an upper guide roller 102 and a horizontal guide 101 connected to the outlet 1 of the dryer C connected to the lithographic printing plate development processing apparatus, and is arranged at 45 ° from the guide surface. A guide plate 103A provided so as to be connected to the inclined conveyor 108 and a plurality of guide rollers 102A, 102B, 102C and 102D are arranged in a zigzag pattern on the guide plate 103A, and are discharged from the guide rollers. The sheet material P is regulated by the guide roller and the guide plate 103A, and is conveyed while taking the same trajectory toward the sheet material tip holder 116 on the conveyance conveyor. And, a tilt plate 105 as tilting means is provided slightly below the conveying surface of the sheet material inside the conveyor 108,
Further, a plate receiving table 107 as a sheet material placing means is attached to the tilt plate 105 at an inclination of about 70 °. Further, between the horizontal guide 101 and the guide plate 103A, a speed detecting roller / sheet material leading end detecting roller 120A is provided directly connected to the encoder 120.

In FIG. 1, the lithographic printing plate P carried out from the carry-out port 1 of the dryer is connected to upper guide rollers 102, 102A,
The paper is sent out while being supported by 102B, 102C, 102D and the lower guide plate 103A. This upper guide roller 102
When the lithographic printing plate P comes off from the exit roller 1a provided at the carry-out port 1 of the dryer C by pressing the upper surface of the lithographic printing plate P, the rear end jumps up and collides with the outer plate 1b of the dryer C. It also serves to prevent damage.

Further, since the sheet material speed detecting roller and sheet leading edge detecting roller 120A also serving as a lower guide roller are configured to always support the lower surface of the lithographic printing plate P sent out in a protruding state, the lithographic printing plate is used. It rotates in synchronization with the transport speed of P. A rotary encoder 120 is provided directly connected to the rotation axis of the roller, and the rotary encoder 120 is connected to the transport speed control means 121 and sends a signal synchronized with the transport speed of the lithographic printing plate P passing through the guide roller 102. .

The width d of the conveyor 108 is about 15 mm, and is provided on both sides of the frame 103. The conveyor 108 is wound endlessly between a lower driving roller 109B and an upper driven roller 109A. And are driven synchronously.
A tilt plate 105 is provided at the center of both conveyors so as to be substantially flush with the upper conveying surface of the conveyor 108, and is rotated by a motor 118 and a link device 117 around a rotation support shaft 104 provided on the frame 103. The sheet material on the conveyor can be delivered to the plate receiving table 107 by driving.

The conveyor 108 is driven by the drive motor 113 and the belt 11
2 and the drive roller 109B.

The upper belt surface of the belt of the conveyor 108 is substantially flush with the upper surface of the tilt plate 105. The tilt plate 105 as tilt means is provided with a sub tilt plate 105A as sub tilt means so as to rotate around a support shaft provided above the tilt position.
When the sheet is rotated toward the plate receiving table 107 to transfer the sheet material, the auxiliary tilting plate 105A jumps out to perform an auxiliary action for facilitating the transfer.

A plate support member 119 is provided below the frame 103 along the inclination of the conveyor 108 and below the plate receiving table 107, and the leading end of the sheet material P is placed on the holder 11 on the conveyor.
The sheet material P is conveyed while being held by the sheet supporting member 6, and slightly before the plate supporting member 119, the sheet material P separates from the conveyor 108 and
Stop by applying the tip to 19. Immediately before that, a sheet material leading edge detector 114b is provided, and the timing of arrival of the leading edge is caught.

The drive control means 115 is connected to the belt drive motor 113, and rotates or stops the conveyor 108 based on a plate detection signal generated by a detection roller 120A serving as a plate detection sensor and a detector 114b. Drive control means 1
Numeral 15 is also connected to the conveying speed control means 121, and controls the rotation speed of the belt drive motor 113 based on the signal of the rotary encoder 120.

The lower end of the lithographic printing plate P guided between the belt, the guide plate 103A and the guide rollers 102A, 102B, 102C, 102D of the conveyor 108 so as not to go too far, and a holder 116 serving as a stopper. The drive control means 115 is configured such that the holder 116
8 is controlled so as to be located at a predetermined position above the conveyor 108 when the vehicle is stopped, that is, when it is on standby.

A link mechanism 117 constituting a rotating means is mounted on the back surface of the tilt plate 105. The link mechanism 117 is connected to a motor 118 for driving the tilt plate. The tilt plate drive motor 118 is connected to the drive control means 115, and causes the tilt plate 105 to reciprocate angularly based on a plate detection signal generated by the detection roller 120A and the detector 114b for plate detection. This angular movement is performed about a tilt plate rotating shaft 104 attached to the lower end of the tilt plate 105, and the tilt plate 105 is moved from the standby position.
Rotates, stops at a position substantially parallel to the inclined face plate of the plate receiving table 107, and then returns to the standby position again. At this time, the auxiliary tilt plate 105A functions as described above, and plays a role in preventing the sealing material P from being returned to the conveyor side.

A plate support member 119 projects from the lower end of the inclined surface plate of the plate receiving table 107, and supports up to fifteen to twenty lithographic printing plates P in a stack.

Next, the operation of the lithographic printing plate stacking apparatus A will be described. As shown in FIG. 2, the planographic printing plate P sent out from the outlet 1 of the dryer C in a state of being jumped out has upper surfaces on upper guide rollers 102, 102A, 102B, 102C, and 102D, a horizontal guide 101, and a tip / speed detecting roller. 120A, guide plate 103
A is transported while the lower surface is supported by A. The rotation speed of the detection roller 120A also serving as the lower guide roller is transmitted to the conveyance speed control means 121 via the rotary encoder 120, and the sheet material front end detection signal is transmitted to the drive control means.
It is conveyed to 115.

As shown in FIG. 3, the lithographic printing plate P serving as the sheet material P conveyed from the guide roller 102 to the conveyor 108 holds a holder as a projection provided on the conveyor waiting at the upper part of the conveyor 108. The leading end is caught by 116, and the count signal from the rotary encoder 120 of the detection roller 120A has already been sent to the drive control means 115, so that the drive control means 115 calculates the start timing and rotates the belt drive motor 113. , FIG. 4,
As shown in FIG. 5, the tip of the lithographic printing plate P is
The belt 108 is rotated while making contact with the belt.

The rotation speed of the belt 108 is determined by the leading edge detection and rotation speed detection roller 1 transmitted to the conveyance speed control means 121.
The transport speed control means 12 is controlled so that the rotation speed of 20A, that is, the transport speed of the lithographic printing plate P when the dryer C is carried out is equal to the transport speed.
Set by 1. The signal of the set conveyance speed is sent to the drive control means 115, and the belt drive motor 113 rotates at a predetermined rotation speed.

As described above, the lithographic printing plate P is supported at its leading end by the holder 116 of the conveyor 108 irrespective of its size, and is tuned to the predetermined speed adjusted to the transport speed of the lithographic printing plate developing apparatus B and the dryer C. It will be transported at a speed.

When the lithographic printing plate P is conveyed by the conveyor 108 and passes over the driving roller 109B at the end of the conveyor 108, the leading end of the sheet material P comes off the holder 116 and passes over the lower detection sensor 114b. The lower plate detection sensor 114b sends a plate detection signal to the drive control means 115.
Then, the leading end is stopped by the plate support member 119 provided immediately after the detection sensor 114b, the lithographic printing plate P is stopped, and the driving of the conveyor 108 is also stopped.

After receiving the plate detection signal, the drive control means 115 rotates the tilt plate drive motor 118 to angularly move the tilt plate 105 via the link mechanism 117 as shown in FIG.
In addition to the operation of the auxiliary tilt plate 105A, the lithographic printing plate P
It is transferred onto the inclined plate 107a of 07.

Thereafter, under the control of the drive control means 115, the belt drive motor 113 rotates the belt 108 to the initial standby position, and the tilt plate drive motor 118 returns the transported tilt plate 105 to the initial standby position and stops. .

[0053]

As described above, the sheet material stacking device of the present invention makes it possible to stabilize the conveyance path of the sheet material to be conveyed on the conveyor, regardless of the change in the rigidity of the sheet material. The number of sensors that detect the speed and the position of the tip can be reduced, the number of adjustment points is reduced, and the production cost and maintenance and inspection man-hours can be reduced.

Then, it is not necessary to adjust the path each time due to the difference in the thickness of the sheet material, and the sheet material accumulating apparatus can be advanced to a very easy-to-use apparatus.

[Brief description of the drawings]

FIG. 1 is a side view of the sheet material accumulating apparatus of the present invention.

FIG. 2 is a partial side view of the sheet conveying section of the present invention.

FIG. 3 is a side view showing a state in which a sheet material is fed into a conveyor holder of the stacking device.

FIG. 4 is a side view illustrating a state in which the conveyor of the accumulating apparatus conveys the sheet while regulating the front end of the sheet material with a holder.

FIG. 5 is a side view showing a state where the state of FIG. 4 is further advanced.

FIG. 6 is a side view illustrating a state in which the conveyance of the sheet material is completed and the conveyance is mounted on the plate receiving table.

FIG. 7 is a side view of a conventional sheet material accumulation device.

FIG. 8 is a partial side view of a transport unit of a conventional sheet material stacking apparatus.

[Explanation of symbols]

 P sheet material (lithographic printing plate) 102, 102A, 102B, 102C, 102D Guide roller 103 Guide plate 105 Tilt means (Tilt plate) 105A Tilt means (Tilt plate) 107 Placing means (plate receiving stand) 115 Drive Control means 120 Encoder 120A Sheet material leading edge detection and sheet material speed detection roller 121 Transport speed control means

Claims (1)

(57) [Scope of request for utility model registration] 1. A stacking device for stacking sheet material into a number longitudinally own the sheet material that has been fed from the previous step
Supporting the front end of the deflection sheets member by the first detecting means and the direction changing guide means for detecting the tip position and the conveying speed of the sheet material to be fed and the direction changing guide means for guiding following the constant transport path Conveying means by an endless belt having a holder and second detecting means for detecting the position where the holder comes at the lowest position and the leading end of the sheet material is distant from the holder, and in parallel with the belt and inside the belt surface A tilting means having a lowermost end rotatable about a support shaft; and a mounting means for mounting the inverted sheet material, wherein the operation of the endless belt is performed by the first detecting means.
The drive is controlled by the detection speed of the step , and the tilting means performs a reversal and a return swing by a signal of the second detection means, and the tilting means has an upper support shaft at the center thereof.
A sheet material accumulating device, comprising a sub-tilt means rotatable .