JPH04103350A - Paper feed method and device for sheet-feed press - Google Patents

Abstract

PURPOSE:To make it possible to monitor operation of an elevating pile and paper feeding and make it easy to maintain and inspect the device by making a carrying car stand by in a position apart from a body of a sheet-feed press and keeping a face for feeding papers to the elevating pile open so as to obtain working space and passage. CONSTITUTION:A palette carry out device 5 connected to rows of rollers 2c of an elevating pile 2 is provided outside a body 1 of a sheet-feed press. After papers in a palette laid on the elevating pile 2 run out, the elevating pile 2 is made to go down so as to align the level with the palette carry out device 5, and the vacant palette is carried out to the outside of a line by operations of the rollers 2c and belt conveyors 5b. After the palette is carried out, the conveyors stop and descend on elevating blocks 2b so as to be ready for carrying in next papers. A carrying car 4 on which the palette having the papers thereon on standby makes a built-in traveling roller 4c operated so as to move toward the elevating pile 2. Further, during this time, a new palette having papers thereon is laid on the carrying car 4 on standby so as to be ready for transporting to the elevating pile 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper carrying method and carrying equipment for carrying a pallet loaded with paper to an elevating pile of a sheet-fed printing press and carrying out an empty pallet.

[Conventional technology]

Paper is fed to a sheet-fed printing press using an elevating pile provided in the main body of the printing press. Then, a pallet loaded with paper is carried into the elevating pile from the outside, and when the paper runs out, the pallet is taken out and a new pallet of paper is fed.

Conventionally, pallets loaded with paper have been carried in and out of the elevating piles mainly by hand using a hand, a fork, a forklift, or the like. but,
Recently, equipment using conveyors and trolleys has been adopted due to problems such as the heavy workload on workers and the limitations of work efficiency. Among these, examples using roller conveyors include, for example, Japanese Patent Application Laid-Open No. 1-15624;
There is one described in Publication No. 8.

This is a floor-pit type roller conveyor placed near the main body of the printing press to match the lifting pile built into the sheet-fed printing press. In order to carry out used pallets, a roller conveyor for pallet discharge is provided separately from the carry-in side. In this way, by providing a roller conveyor for loading and unloading pallets and linking its operation to the movement of the lifting pile, it becomes possible to continuously supply paper, reducing the workload and setting the paper. efficiency will be improved.

[Problem to be solved by the invention]

However, if the roller conveyor for conveying paper is fixedly installed at a position close to the lifting pile, it will interfere with maintenance, inspection, adjustment, etc. of the printing press main body. For this reason, if a problem occurs with the elevating pile or the like during paper feeding, prompt work cannot be carried out, resulting in a major hindrance to the printing process. Furthermore, if the next pallet is placed on the roller conveyor and then the next pallet is placed on standby, the efficiency of carrying in the pallet increases, but the paper on the pallet is held up at a high rate, which is similarly inconvenient for maintenance and management of the printing press itself. Furthermore, equipment that requires a pit is subject to restrictions as to where it can be installed.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a facility for carrying in paper that does not interfere with maintenance and inspection of the main body of a printing press, and is free from restrictions on the installation location.

[Means to solve the problem]

The present invention is a loading method in which a pallet loaded with printing paper is placed on a conveyance truck, the conveyance truck is driven to a lifting pile for paper feeding provided in the main body of a sheet-fed printing press, and the pallet is moved to this lifting pile. After carrying the pallet to the lifting pile, the carrier is retreated to a standby position away from the main body of the sheet-fed printing press, and during this waiting period, a working space is created between the carrier and the main body of the sheet-fed printing press. The present invention is characterized in that a pallet carrying sheets of paper is further loaded on the conveyance carriage at the standby position.

Further, the paper loading equipment of the present invention includes an elevating pile for paper feeding provided in the main body of a sheet-fed printing press, and a conveyance truck for transporting a pallet loaded with paper to the elevating pile. It is movable by opening a standby position away from the distribution body and the front and elevating pile, and after the conveyance cart transfers the pallet loaded with paper from the standby position to the elevating pile, the conveyance cart is moved back to the standby position. It is characterized by

Further, the elevating pile is equipped with a roller row for discharging empty pallets in a direction perpendicular to the traveling direction of the transport vehicle, and the transport vehicle is equipped with a bifurcated support base having a width wider than the width of the roller row in the path direction. These supports can also enable the carriage to advance to a position sandwiching both ends of the roller row.

[Effect]

If the conveyance cart is placed on standby at a position away from the main body of the sheet-fed printing press, the paper delivery surface to the elevating pile remains open.
Work space and passage around the lifting pile will be secured. Also,
Even if the conveyance cart is loaded with a new pallet in its standby position, the area around the lifting pile can remain open except when transferring to the lifting pile, and the lifting pile continues to operate while the printing line is in operation. You can also monitor the paper feed status.

〔Example〕

FIG. 1 is a schematic perspective view showing the entire paper loading equipment of the present invention.

In the figure, a main body 1 of a sheet-fed printing press incorporates an elevating pile 2 for continuously feeding paper to a printing line. This elevating pile 2 is equipped with a base brake (2a) which can be raised and lowered and is suspended from the main body 1 by a chain 2d. It is arranged so that the inside faces out. A lifting block 2b that is raised and lowered by a cylinder or the like is installed on the base plate 2a in order to receive and take the pallet loaded with paper from the transport vehicle, and a lifting block 2b is installed on the base plate 2a to be used for supporting and carrying out the pallet. Two rows of rollers 2c are arranged.

These rollers 2C are provided with self-propelled rollers in each row, at least a portion of which has a built-in motor, and are configured to be capable of loading and carrying out pallets by operating the rollers.

Two rows of plate rails 3 are installed extending from the main body 1 in parallel with the axis of the roller 2c, and guide rails 3a each having a substantially triangular cross section are formed at their longitudinal edges. The upper surfaces of the plate rail 3 and the base plate 2a of the lifting pile 2 are at the same level, and the base plate 2a is also provided with a guide rail 2a-1, which is connected to the guide rail 3a side.

A transport carriage 4 is movably installed on the plate rail 3, and a pallet loaded with paper is placed on the transport carriage 4 and transferred to the elevating pile 2. The transport vehicle 4 includes a pair of support stands 4
a and stays 4b connecting these, and a number of running rollers 4c with built-in motors are installed on the lower surface of each support stand 4a, and two wheels 4d are provided. The running roller 4c runs on the top surface of the plate rail 3,
The wheel 4d rolls while being guided by the guide rails 3a and 2a-1.

Note that the support stand 4a has a bifurcated planar shape due to the stay 4b, and the distance between the opposing surfaces of these support stands 4a is greater than the length of the row of rollers 2C in the lifting pile 2. When the t1 carrier vehicle 4 is advanced to the lifting pile 2, the support base 4a is positioned to sandwich the row of rollers 2C, as shown by the dashed line in the figure.

Also, on the side of the support stand 4a, there is a guide plate (4) that guides the pallet to the correct posture when it is placed on it.
A stopper 4f is provided at the rear end to restrain the position of the pallet. Further, the upper surface of the support table 4a is provided with a large number of free bears 4g using spherical bodies so as to receive a pallet loaded with paper with point support and to freely change the posture of the pallet. On the other hand, a stopper block 3b is attached to the terminal end of the plate rail 3 for receiving the traveling roller 4C and stopping the transport vehicle 4.

Furthermore, a pallet unloading device 5 is provided outside the main body 1 so as to be continuous with the row of rollers 2c of the lifting pile 2. This pallet unloading device 5 has two rows of belt conveyors 5b arranged on a base plate 5a, and lifts up and down piles 2.
When the is lowered and the lifting block 2b is raised,
The rollers 2c and these belt conveyors 5b are set at the same level. In this state, the empty pallet is carried out from the main body 1 by driving the rollers 2c and the belt conveyor 5b.

In the illustrated state, the carriage 4 hits the stopper block 3b at the end of the plate rail 3 and is stopped.

At this time, the carriage 4 stands still at a position an appropriate distance away from the main body 1 of the sheet-fed printing press, and waits with a pallet (not shown) loaded with paper placed on the support stand 4a. On the other hand, after the paper on the pallet placed on the lifting pile 2 runs out, the lifting pile 2 is lowered to match the level with the pallet unloading device 5, and the roller 2c and belt conveyor 5b are operated by the operation panel (not shown). Empty pallets are carried off the line. After carrying out the pallet, each conveyor stops, and the lifting block 2b descends to prepare for the next carrying.

Transport trolley 4 waiting with a pallet loaded with paper
operates the built-in motor of the running roller 4c using the operating panel to move the moving roller 4c in the direction of the lifting pile 2.

A pair of support stands 4 connected in a bifurcated manner by stays 4b
A surrounds the rollers 2c on the elevating pile 2 so as to include them as shown by the dashed line in the figure. Note that when moving the carrier 4 into the main body 1, the lifting block 2b is operated to make the pass level of the roller 2c lower than the upper surface of the support base 4a of the carrier 4.

When the conveyance cart 4 is completely placed on the base brake 2a and the leading edge of the paper contacts the front plate (not shown) of the main body 1, the pallet rolls on the free bear 4g and the leading edge of the paper becomes parallel to the front plate. It is positioned as follows. When the positioning is completed, a sensor (not shown) placed in the front part detects this and stops the transport vehicle 4. Then, the elevator block 2
By raising the support platform 4a of the transport vehicle 4,
The pallet placed on the carriage 4 is lifted up by the lifting roller 2c, and its edge with the carriage 4 is cut off. The carrier 4 that has transferred the pallet to the lifting pile 2 exits the main body 1 and stops at the original standby position, while the lifting pile 2 rises in accordance with the operation of the printing line and passes through the lateral shift detector placed in the main body 1. The paper is fed to the printing line while being centered by a sensor (not shown) and roller 2c. In addition, during this time, a new pallet loaded with paper is loaded onto the waiting transport vehicle 4 in preparation for transfer to the elevating pile 2.

In this way, a new pallet can be placed on the carriage 4 while it is placed on standby at a position separate from the main body 1 of the sheet-fed printing press. Therefore, while the printing press is in operation, there is an open space around the elevating pile 2, allowing the paper feeding state to be monitored and troubles to occur to be dealt with immediately. Furthermore, the area around the lifting pile 2 can be used as a work space or a passage, making it easier to maintain and inspect the device.

〔Effect of the invention〕

In the present invention, with respect to an elevating pile included in the main body of a sheet-fed printing press, a conveyance cart for transferring a pallet loaded with paper to the elevating pile is kept on standby at a position separate from the main body. Therefore, even if a new pallet loaded with paper is placed on the conveyance truck while the machine is on standby, the space of the elevating pile can be made into an open space. Therefore, it is possible to discover failures in the lifting pile and monitor the paper feeding status, making it possible to carry out trouble-free paper feeding work. Further, since there is no need to provide a floor bit as in the conventional method, installation of a conveyor cart, etc. on the line is simplified, and the complexity of maintenance and inspection is also eliminated.

[Brief explanation of drawings]

FIG. 1 is a perspective view schematically showing a sheet feeding facility for a sheet-fed printing press according to the present invention. 1; Main body 2: Lifting pile 3 nibrate rail 4: Transport vehicle 5: Pallet unloading device

Claims (1)

[Claims] 1. Place the pallet loaded with printing paper on a conveyance truck, drive the conveyance truck to an elevating pile for feeding paper provided in the main body of a sheet-fed printing press, and transfer the pallet to this elevating pile. The loading method includes retreating the carrier to a standby position away from the main body of the sheet-fed printing press after loading the pallet to the lifting pile;
A sheet-fed printing machine characterized in that during this standby, a space between the conveyance carriage and the main body of the sheet-fed printing machine is used as a working space, and a pallet carrying paper is further loaded on the conveyance carriage in the standby position. How to import paper. 2. An elevating pile for paper feeding provided in the main body of the sheet-fed printing press,
a conveyor for transporting a pallet loaded with paper to the elevating pile; the conveyer is movable between a standby position remote from the main body and the elevating pile; Paper loading equipment for a sheet-fed printing press, characterized in that a conveyance cart is moved back to a standby position after a loaded pallet is transferred to an elevating pile. 3. The elevating pile is equipped with a roller row for discharging empty pallets in a direction perpendicular to the traveling direction of the transport vehicle, and the transport vehicle is provided with a bifurcated support having a width wider than the path direction width of the roller row. 3. The sheet feeding equipment for a sheet-fed printing press according to claim 2, further comprising a stand, the support stands being able to advance to a position sandwiching both ends of the roller row.