JP2001088991A - Coil feed-out machine and method of taking out coil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automate the takeout of a coil by mechanically performing the confirmation of the receipt of a coil by a receiving base and automatically releasing a chuck. SOLUTION: An installed coil C is moved to a takeout position, a lifter 74 is moved under the coil C and raised. When a skid 78 receives the coil C, a support member 42 is slightly lifted up to move a light shielding plate 68. When the movement quantity detected by a displacement sensor 70 reaches 0.1 mm, the lifter 74 is stopped, and a chuck 44 is released. According to this, since the receipt of a coil C1 by the skid 78 can be mechanically confirmed without visual inspection, the visual confirmation work by an operator can be eliminated in the takeout of the coil.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coil feeder for feeding a sheet material to be fed to a processing line from a coil, and to a coil takeout method.

[0002]

2. Description of the Related Art A photosensitive lithographic printing plate (hereinafter, referred to as a "PS plate") is generally a sheet-like or coil-like aluminum plate, which is subjected to surface treatment such as graining, anodic oxidation, chemical conversion treatment alone or in an appropriate combination. Then, after applying and drying a photosensitive liquid (processed in this manner is hereinafter referred to as a “web”), it is manufactured by cutting into a desired size.

By the way, on a web sent from a feeder provided at the most upstream part of the processing line, a slip sheet as a protection paper is sent from a coil feeder 120 shown in FIG.

The coil feeder 120 has a support member 122, and the coil C is rotatably mounted on chucks 124 provided at both ends of the support member 122.

A central portion of the support member 122 is fixed to a rotating shaft 128 supported by a gantry 126. The rotating shaft 128 is rotated to a predetermined position by a driving mechanism 130, and a brake 132 is applied. The coil C can be stopped at the delivery position and the removal position.

[0006] By the way, when changing the width of the web,
Although it is necessary to replace the coil C, conventionally, as shown in FIG. 11 and FIG. 12, the support member 122 is set in a horizontal state, the receiving base 134 is lifted by the lifter 136, and the receiving base 134 securely receives the coil C. After visually confirming this, the lifting of the cradle 134 was stopped and the chuck 124 was released.

[0007] That is, conventionally, there is no method other than visual determination by the operator as to whether or not the cradle 134 has reliably received the coil C, which has been a factor that makes automation difficult.

[0008]

SUMMARY OF THE INVENTION In view of the above facts, the present invention is to mechanically confirm that a cradle has received a coil and to automatically release a chuck to automate coil removal. As an issue.

[0009]

According to the first aspect of the present invention, the switching means moves the loaded coil to the sending position, sends out the sheet material wound by the coil to the processing line, and The loaded coil is moved to the removal position, and the loading of the coil is released.

The switching means is provided with a positioning member which moves integrally, and the displacement of the positioning member is detected by the displacement detecting means. The control means stops the switching means when the displacement detecting means first detects the positioning member, and then, when the displacement detecting means detects the displacement of the positioning member, releases the coil loaded in the switching means.

In this configuration, the cradle is moved below the coil feeder, and waits for the coil to come to the take-out position (the displacement detecting means detects the position-finding member first). Then, the cradle is raised, and the coil is lifted until the displacement detecting means detects the displacement of the positioning member.

That is, by confirming that the positioning member has been displaced, it is possible to mechanically determine that the cradle has received the coil.
The removal of the coil can be automated. For this reason,
The burden on the operator can be reduced.

According to the second aspect of the present invention, the control means includes:
After the displacement detecting means first detects the positioning member, the displacement detecting means is reset to detect the displacement of the next positioning member.

That is, there is also a method of detecting the position where the positioning member is first detected, and whether or not the position has been displaced from the detected position.
The control mechanism can be simplified.

According to a third aspect of the present invention, there is provided a coil take-out method for taking out a coil from a coil feeder provided with a sending position for sending a sheet material wound up by the coil to a processing line and a switching means for moving the sheet material to a take-out position. The cradle was moved to the take-out position, the cradle was raised, the coil at the take-out position was lifted, and after detecting that the switching means had moved, the rise of the cradle was stopped, and the cradle was loaded into the switching means. Unload the coil. Thereby, coil removal can be automated.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. (Outline of cutting line) As shown in FIG.
A feeder 98 for feeding the rolled web 12 is disposed on the upstream side of 0. The web 12 sent out from the feeder 98 is curled by the leveler 15. On the other hand, the slip sheet 18 sent out from the coil feeder 14 is superimposed on the web 12 at the feed roller 16, charged and adsorbed, and reaches the notcher 20.

The notcher 20 punches the edge or the center of the web 12 so that the upper blade 22 and the lower blade (not shown) of the slitter 10 can move in the width direction of the web 12 at the punching position. Thereby, the trimming width (width size) of the web 12 can be changed while continuously cutting (cutting the slip sheet and the web).

Further, the ear shavings of the web 12 are sent to a chopper (not shown) and cut into small pieces, and then sent to a storage box 84 by a conveyor 82, and the interleaf paper 18 is suctioned by a suction pipe 23.

In this way, the length of the web 12 having the predetermined trimming width is detected by the length measuring device 26.
The cutter 28 cuts the web 12 at the designated timing to produce a PS plate 30 of a set size.

Next, the PS plates 30 are sent to the stacking section 34 by the conveyor 32, and are stacked in a predetermined number to form the stacking bundle 31. In the stacking unit 34, a protection sheet (generally referred to as "the ball") made of cardboard or the like is arranged on the upper and lower sides or one side of the stack 31.

Then, the stack 31 is stacked on the pallet 33 via the transport section 35. Then, it is sent to a storage such as a rack warehouse or a packaging process, and is packaged with a packaging material (tape, interior material, exterior material, etc.). In this way, the PS plate 30 is packaged and shipped, but depending on the packaging form, the slip sheet 18 and other packaging materials are omitted.

As the PS plate 30 used in the present embodiment, for example, as described in Japanese Patent Application Laid-Open No. 10-100556, a PS plate used for general printing (commercial printing, newspaper printing, etc.) is used. Of course, this is included, but in addition to this, for example, the applicant of the present invention has filed Japanese Patent Application No. 10-4201.
As proposed in No. 4, it includes those used as so-called discarded versions. When used as a plate, it is preferable that the photosensitive layer is unnecessary or not provided.
include. Further, the photosensitive layer may be coated on both sides of an aluminum support. In addition, P used for digital printing such as photopolymer and thermal printing
Included in S version.

Next, the coil feeder will be described.

As shown in FIGS. 2 and 3, a rotating shaft 40 is supported on a column 38 that is raised from the base of the coil feeder 14. A pair of support members 42 are fixed to both ends of the rotating shaft 40 and rotate integrally with the rotating shaft 40.

At both ends of the support member 42, chucks 44 for mounting the coil C are mounted, and the loading method is a chuck type. The chuck 44 is a screw mechanism (not shown) that is turned by a motor 46, slides in the axial direction, and comes out of the shaft hole of the coil C, and detaches the coil C. Also,
The coil feeder 14 can be loaded with two coils at the same time.

On the other hand, a transmission gear 48 is fixed to an end of the rotating shaft 40. This transmission gear 48 meshes with the reduction gear 52 of the reduction gear 50. A belt 60 is wound around the pulley 54 of the speed reducer 50 and the pulley 58 of the motor 56. As a result, the rotational force of the motor 56 is transmitted to the rotary shaft 40 via the pulley 58, the pulley 54, the reduction gear 52, and the transmission gear 48, and the support member 42 rotates to move the coil C to the delivery position or the removal position. I do.

A brake 62 is provided on a peripheral side surface of the reduction gear 52. Then, the controller 6 shown in FIG.
When a signal is input from the step 4, the motor 56 is decelerated.

Further, a positioning member 66 is fixed to the rotating shaft 40 so as to cross the support member 42 at right angles. At both ends of the positioning member 66, the light shielding plate 6 is provided.
8 are attached. A transmissive displacement sensor 70 is provided at the base of the column 38 at a position where the support member 42 becomes horizontal when the light shielding plate 68 is detected. By stopping the motor 56 and applying the brake 62 when the displacement sensor 70 detects the light shielding plate 68,
The coil C, which has been sent out, can be stopped almost exactly at the take-out position.

On the other hand, as shown in FIG.
Outside, a chain conveyor 72 is laid,
The coil C mounted on the skid 78 is waiting at the first standby position W1 and the second standby position W2. The chain conveyor 72 is laid from the coil take-out position to the carry-out position.
, Or the coil C that has been sent out can be carried out.

A plurality of roller conveyors 76 for positioning and transporting are arranged on the lifter 74, and a skid 78 is placed on the roller conveyor 76.
The receiving surface of the skid 78 has a tapered shape with a concave central portion, and has a structure to receive the cylindrical coil C stably. Thereby, the skid 78 slides following the position of the coil C, and receives the coil C reliably.

The lifter 74 is provided with a positioning cylinder 80, and a block 82 provided at the tip of the rod hits the skid 78, and positions the skid 78 for receiving the coil C. The skid 78 includes an extrusion cylinder 84 attached to the support 38.
Of the block 8 is slid by being pushed by the side of the push plate 86.
2.

Next, the operation of the coil take-out device according to this embodiment will be described.

As shown in FIG. 6, in order to move the coil C1 whose delivery has been completed to the take-out position, the support member 42 is moved to one position.
Rotate 80 °. Next, the displacement sensor 70 is connected to the light shielding plate 68.
Is detected, the control device 90 stops the motor 56, activates the brake 62, and locks the reduction gear 52.

Further, after the block 82 is pushed up by the cylinder 80 and the skid 78 pressed against the push plate 86 of the extrusion cylinder 84 and the skid 78 for receiving the coil C1 is positioned on the roller conveyor 76, the cylinder 80, The extrusion cylinder 84 returns to its original state.

Here, as shown in FIG. 7, the lifter 74 waiting at the take-out position is operated to raise the skid 78 and reset the displacement sensor 70 to zero.

Next, as shown in FIG. 8, when the skid 78 receives the coil C1, the support member 42 is slightly lifted and the light shielding plate 68 moves. When the movement amount detected by the displacement sensor 70 becomes 0.1 mm, the lifter 74 stops. As a result, it is possible to mechanically confirm that the skid 78 has received the coil C1 without visual inspection.
At the time of coil removal, the visual work of the operator is eliminated.

In this embodiment, although the exaggerated drawing is shown in FIG. 8, the moving amount of the light shielding plate 68 is set to 0.1 mm to reduce the shock when the skid 78 receives the coil C1. However, if the movement amount is 1.5 mm or less, no particular problem occurs. In addition, although the moving amount differs depending on the length L from the rotating shaft 40 to the tip of the chuck 44 and the light shielding plate 68, in this embodiment, L is 910 m.
m.

Next, the motor 46 is driven and the chuck 4 is driven.
4 is retracted to unload (unchuck) the coil C1. Here, as shown in FIG. 9, the lifter 74 is lowered, and the
In a substantially horizontal state.

Next, the skid 72 on which the coil C1 is mounted
Is carried out by the roller conveyor 76 and the chain conveyor 72, and the next coil is loaded in the chuck 44,
The web is sent out to the processing line again.

In this embodiment, the coil feeder for feeding the slip sheet has been described, but a PS plate coil can also be used. Further, the displacement sensor does not necessarily need to be reset to zero, and may be a method of detecting whether or not displacement has occurred based on the displacement amount when the light shielding plate is first detected.

The used interleaving paper was made from bleached kraft pulp and had a basis weight of 30 to 45 g / m ³ and a density of 0.1 to 0.5 g / m ³ .
It is 7 to 0.85 g / m ³ , moisture: 4 to 6%, Beck smoothness is 50 to 200 seconds, PH is 4 to 6, and adheres to the PS plate coating layer to protect the coating layer. In addition, there is also a laminated paper in which polyethylene is laminated on one side or both sides.

Here, the manufacturing process of the PS plate will be described.

The PS plate is a JIS containing 99.5% by weight of aluminum, 0.01% by weight of copper, 0.03% by weight of titanium, 0.3% by weight of iron, and 0.1% by weight of silicon.
-A1050 rolled sheet of aluminum material with a thickness of 0.30 mm was converted to 400 mesh pumice stone (manufactured by Kyoritsu Ceramics).
Weight percent aqueous suspension and a rotating nylon brush (6,10-
(Nylon) and the surface was grained, and then washed well with water.

This was immersed in a 15% by weight aqueous sodium hydroxide solution (containing 4.5% by weight of aluminum), etched so that the amount of aluminum dissolved was 5 g / m ² , and washed with running water. Furthermore, neutralize with 1% by weight nitric acid,
Next, in a 0.7% by weight nitric acid aqueous solution (containing 0.5% by weight of aluminum), a rectangular wave alternating waveform voltage (current ratio r = 0.9) having an anode voltage of 10.5 volts and a cathode voltage of 9.3 volts was used.
0, a current waveform described in Examples of JP-B-58-5796), and an electrolytic surface roughening treatment was carried out at an anode electricity amount of 160 coulomb / dm ² . After washing with water,
It was immersed in a 0% by weight aqueous sodium hydroxide solution, etched so that the amount of aluminum dissolved was 1 g / m ² , and washed with water. Next, it was immersed in a 50% by weight aqueous solution of 30% by weight sulfuric acid, desmutted and washed with water.

Further, a porous anodic oxide film forming treatment was performed in a 20% by weight aqueous sulfuric acid solution (containing 0.8% by weight of aluminum) at 35 ° C. using a direct current. That is, electrolysis was performed at a current density of 13 A / dm ² , and the anodic oxide film weight was adjusted to 2.7 g / m ² by adjusting the electrolysis time. To prepare a negative photosensitive lithographic printing plate using a diazo resin and a binder, the support was washed with water, immersed in a 3% by weight aqueous solution of sodium silicate at 70 ° C. for 30 seconds, washed with water and dried.

[0046] The thus-obtained aluminum support, reflection density was measured with Macbeth RD920 reflection densitometer 0.30, the center line average roughness R _a as defined in JIS B00601 is 0.58μm met Was.

Next, methyl methacrylate /
A 1.0% by weight aqueous solution of ethyl acrylate / 2-acrylamide-2-methylpropane sodium sulfonate copolymer (average molecular weight: about 60,000) (molar ratio: 50/30/20) was dried by a roll coater to obtain an applied amount of 1.0% by weight. 0.05g
/ M ² .

Further, the following photosensitive solution-1 was applied using a bar coater and dried at 110 ° C. for 45 seconds. The dry coating amount was 2.0 g / m ² . Photosensitive solution-1 Diazo resin-1 0.50 g Binder-1 5.00 g Stylite HS-2 (manufactured by Daido Kogyo Co., Ltd.) 0.10 g Victoria Pure Blue BOH 0.15 g Tricresyl phosphate 0.50 g Dipicolinic acid 0 .20 g FC-430 (Surfactant manufactured by 3M) 0.05 g Solvent 1-methoxy-2-propanol 25.00 g Methyl lactate 12.00 g Methanol 30.00 g Methyl ethyl ketone 30.00 g Water 3.00 g The above diazo resin-1 Is obtained as follows. First, 29.4 g of 4-diazodiphenylamine sulfate (purity: 99.5%) was added at 25 ° C to 96% sulfuric acid 70%.
ml and stirred for 20 minutes. to this,
3.26 g of paraformaldehyde (purity 92%)
The mixture was gradually added over 0 minutes, and the mixture was stirred at 30 ° C. for 4 hours to allow the condensation reaction to proceed. The condensation molar ratio between the diazo compound and formaldehyde is 1: 1. The reaction product was poured into 2 liters of ice water with stirring, and treated with a cold concentrated aqueous solution in which 130 g of sodium chloride was dissolved. The precipitate is collected by suction filtration, the partially dried solid is dissolved in one liter of water, filtered, cooled on ice and washed with potassium hexafluorophosphate 23.
g was dissolved in an aqueous solution. Finally, the precipitate was collected by filtration and air-dried to obtain 1 g of diazo resin.

Binder-1 was 2-hydroxyethyl methacrylate / acrylonitrile / methyl methacrylate / methacrylic acid copolymer (weight ratio 50/20/26 /
4, average molecular weight 75,000, acid content 0.4 meq /
g) is a water-insoluble, alkaline water-soluble film-forming polymer.

Stylite HS-2 (manufactured by Daido Industry Co., Ltd.)
Is a polymer compound having a higher oil sensitivity than the binder,
It was a copolymer of styrene / mono-4-methyl-2-pentyl maleate = 50/50 (molar ratio), and the average molecular weight was about 100,000. A mat layer-forming resin solution was sprayed on the surface of the thus prepared photosensitive layer as described below to form a mat layer.

As a resin solution for forming a mat layer, methyl methacrylate / ethyl acrylate / 2-acrylamide-
2-methylpropanesulfonic acid (65: 2 weight ratio charged)
0:15) 12% of a part of the copolymer as a sodium salt
Prepare an aqueous solution and use a rotary atomizing electrostatic coating machine to atomize the head 2 times
5,000 rpm, the feeding amount of the resin liquid is 4.0 ml / min,
The voltage applied to the atomizing head was -90 kV, the ambient temperature during coating was 25 ° C, the relative humidity was 50%, and the coating surface was sprayed with steam for 2.5 seconds to wet the coating surface. Hot air with a temperature of 60 ° C. and a humidity of 10% was blown for 5 seconds to dry. The average height of the mat was about 6 μm, the average size was about 30 μm, and the application amount was 150 mg / m ² .

[0052]

According to the present invention having the above-described structure, it can be mechanically confirmed that the cradle has received the coil. For this reason, the removal of the coil can be automated.

[Brief description of the drawings]

FIG. 1 is an overall perspective view of a line in which a coil feeder according to an embodiment is used.

FIG. 2 is a perspective view of the coil feeder according to the embodiment.

FIG. 3 is a front view of the coil feeder according to the embodiment.

FIG. 4 is a plan view showing a movement path of a lifter.

FIG. 5 is a block diagram showing the operation of the coil feeder according to the embodiment.

FIG. 6 is a side view showing an operation procedure of the coil transmitter according to the embodiment.

FIG. 7 is a side view showing an operation procedure of the coil transmitter according to the embodiment.

FIG. 8 is a side view showing an operation procedure of the coil transmitter according to the embodiment.

FIG. 9 is a side view showing an operation procedure of the coil transmitter according to the embodiment.

FIG. 10 is a front view showing a conventional coil feeder.

FIG. 11 is a side view showing a conventional coil feeder.

FIG. 12 is a side view showing a conventional coil feeder.

[Explanation of symbols]

 66 Positioning member 68 Light shielding plate 70 Displacement sensor (displacement detecting means) 74 Lifter 78 Skid (cradle) 90 Control device (control means)

Claims (3)

[Claims] 1. A coil feeder comprising: a feeding position for sending a sheet material wound by a coil to a processing line; and a switching means for moving the sheet material to a removal position, wherein a positioning member that moves integrally with the switching means. When,
Displacement detection means for detecting the amount of displacement of the positioning member,
When the displacement detecting means first detects the positioning member, the switching means is stopped, and then when the displacement detecting means detects the displacement of the positioning member, the coil loaded in the switching means is unloaded. And a control means. 2. The control device according to claim 1, wherein after the displacement detecting device first detects the positioning member, the control device resets the displacement detecting device to detect the displacement of the next positioning member. Item 2. The coil feeder according to item 1. 3. A coil pick-up method for picking up a coil from a coil feeder having a sending position for sending the sheet material wound up by the coil to a processing line and a switching means for moving the sheet material to a pick-up position, , The cradle is raised to lift the coil at the take-out position, and after the displacement detecting means detects that the switching means has moved, the cradle is stopped rising and the coil mounted on the switching means is moved. And removing the coil.