JPH0235705Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Field of industrial application] The invention is based on a trolley loaded with paper loaded outside the machine and fed to a paper feeder, and then only the pallet and the paper on it are taken out. The present invention relates to a paper stacking device for a sheet-fed printing press that loads paper onto a mounting table with the edges aligned.

[Conventional technology]

The paper feeding device of a sheet-fed printing press is equipped with a paper stack bar suspended by a lifting chain, and the paper stacked on a pallet is supported as a pallet on this paper stack bar, and the paper is stacked one by one from the upper layer. The sheets are suctioned one by one by a suction device and supplied to a printing unit for printing. As the amount of paper decreases due to paper feeding, the elevating chain is automatically wound to raise the paper stack bar and maintain the upper surface of the paper at a predetermined height.

In such a paper feeding device, if the paper is not aligned vertically correctly, the paper sucked by the suction device may not reach the paper feed roller and the paper may fall off, or even if it does reach the paper, the paper may not be properly aligned vertically. Registration is delayed in the vertical direction, causing the registration device to malfunction, and printing to stop, resulting in a large amount of wasted paper. Also, if the paper is not aligned correctly in the horizontal direction, it may fall out of the retracting range of the horizontal stitching device that aligns the horizontal register and is not pulled in, resulting in paper jams or misregistration, resulting in a large amount of wasted paper. do.

Conventionally, vertical front and side supports are provided at the front and sides of a paper feeder, respectively, and papers are stacked with the edges of the papers in contact with these. However, stacking the paper while aligning it in the paper feeder takes time and increases the downtime of the printing press, reducing productivity. Paper is stacked on a pallet while aligning the paper edges at a separate location away from the machine, and the paper is transported by a forklift or trolley and fed to a paper feeder.

Then, the paper thus positioned outside the machine is drawn into the paper feeding device as it is on the trolley, and after fine positioning is performed by front and side hits, printing is started.

[Problem that the invention attempts to solve]

However, conventional paper stacking devices have had problems in positioning the paper after it has been fed to the paper feeder and in transferring the pallet from the trolley to the paper stacking bar. That is, in the past, the paper stack bar suspended by a lift chain was raised, the trolley was pulled into the paper feeding position, the pallet was moved on the trolley to position the paper, and then the paper stack bar was lowered. The paper was passed to the bottom of the pallet, the paper stack bar was raised, and printing was started. In this way, the pallet receiving member for moving the pallets and arranging the sheets and the paper stacking bar for lifting the pallets after positioning the paper are separate members, and the paper stacking bar can be moved under the pallet. As a result, the structure is not only complicated and operation is troublesome, but also there is a problem in that the paper that has been carefully positioned may shift when the paper stack bar is raised.

Another structure has been proposed in which a trolley loaded with pallets is directly hoisted, but this also has a complicated structure and is difficult to operate.

[Means for solving problems]

In order to solve these problems, the present invention uses an elevating table that is formed as a frame to surround a transport vehicle that carries a plate-like member loaded with paper and is drawn between the left and right paper feed frames. It is suspended in a horizontal position by a chain so that it can be raised and lowered freely, and an auxiliary table is placed on it via a sphere so that it can be moved in each horizontal direction, and this auxiliary table is moved in the vertical and horizontal directions of the paper. A moving means was provided, and the lowering limit of the lifting table was set so that the upper surface of the auxiliary table was lower than the upper surface of the carrier at the lowering limit of the lifting table.

[Effect]

After lowering the elevating table to its lowering limit, the paper loaded on the plate-like member at the paper stacking position outside the machine is loaded onto the carrier, pulled into the area surrounded by the elevating table, and the elevating table is slightly raised. Then, the plate-shaped member loaded with paper rises from the top of the transport vehicle, so operate the moving means to move the auxiliary table interposed between the plate-shaped member and the lifting table in the vertical and horizontal directions of the paper. Then, the front edge and side edges of the paper come into contact with the front and side supports, respectively, and the paper is positioned. After the paper is positioned, the elevating table is raised to a predetermined position to start printing, and the transport vehicle is moved. Pull it out and return it to the paper stacking position outside the machine. After printing a predetermined number of sheets, when the paper on the elevating table runs out, the elevating table is lowered to its lower limit and the used plate-like member is taken out of the machine, and the above operation is repeated.

〔Example〕

1 to 3 show an embodiment of the paper stacking device according to the present invention, in which FIG. 1 is a plan view of approximately half the width thereof, FIG. 2 is a side view from A in FIG. 1, and FIG. 2 is a front view seen from the direction in which the trolley approaches, which is the viewing direction B in FIG. 2. FIG. In these figures, inside the paper feeder of a sheet-fed printing press, there are two rails 2 on the left and right with a slight gap between them and the rail 1 laid outside the machine.
is installed with the front and back connected by stays 3,
On this rail 2, a trolley serving as a transport vehicle, generally designated by reference numeral 4, is pulled in from the rail 1 outside the machine. This trolley 4 consists of a rectangular frame body 6 with long flat irons 5 attached to the upper surfaces of both left and right ends, and a plurality of wheels 8 pivotally attached to both left and right sides of the frame body 6 via brackets 7. The rails 1 and 2 are
After being pulled in by rolling the wheels 8 above, the wheels 8 are brought into contact with a stopper 9 fixed to the front end of the rail 2, thereby being positioned and stopped. 10 is a part of a metal fitting for fixing an auxiliary plate 13, which will be described later, to the trolley 4 when stacking paper at the paper stacking position outside the machine on the rail 1, and 11 is a part of the metal fitting for fixing the trolley 4 to the rail 1 outside the machine. It is part of the metal fittings for A pallet 12, which is a hollow rectangular plate member whose relative position with the trolley 4 is determined outside the machine, is mounted on the trolley 4 via a rectangular plate-shaped auxiliary plate 13. Paper 14 is stacked on paper 12, the position of which is determined relative to the pallet 12 outside the machine.

The trolley 4 constructed in this way and pulled into a predetermined position on the rail 2 is formed into a symmetrical inverted L-shape when viewed from the front as shown in FIG. 3, and is reinforced with a plurality of ribs. The plate 15, a pipe stay 16 connecting its front lower end, and a plate stay 17 connecting its rear end are surrounded by an elevating table 18 formed into a rectangular frame shape in plan view. In addition, since the pipe stay 16 crosses between the rails 1 and 2, it does not prevent the wheels 8 of the trolley 4 from rolling. Each long end plate 19 bolted to the side edges of the left and right base plates has a total of 4 pieces, 2 on the front and 2 on the front.
The upper end of the lifting chain 21, to which several chain hooks 20 are fixed and whose lower ends are fixed to each of these chain hooks 20, is fixed to a hoisting device (not shown) on the paper feed frame side. Elevating table 18 by pushbutton operation or automatic control
is configured to move up and down along the guide. Multiple columns and rows of spherical bearings 22 are fixed to the upper surface of each base plate 15 of the lifting table 18, and the auxiliary table 23, which is formed in a rectangular plate shape, moves horizontally in each direction on these spherical bearings 22. It is supported freely, and its movement is regulated at a position adjusted by a vertical adjustment device 24 and a left-right adjustment device 37, which will be described later. In each figure, the lifting table 21 is slightly rolled up and the auxiliary table 23 is in close contact with the auxiliary plate 13 to support it. When the trolley 4 is retracted, the lifting chain 21 must be unwound. When the elevating table 18 is held, it is lowered, and when the auxiliary table 33 is lowered, the auxiliary plate 13, pallet 12, and paper 14 are placed on the trolley 4.
Enter with.

The vertical adjustment device 24 includes a pair of bearings 25 and 2 fixed to the upper surface of each base plate 15 of the lifting table 18.
An adjustment shaft 27 is provided at the center of the entry side of the trolley 4 and extends in a direction parallel to the rail 2. Movement is restricted. In addition, at the end of the adjustment shaft 27 on the bearing 26 side,
A threaded portion 27a is provided, and this threaded portion 27
A is screwed into a screw hole of a rectangular roller stand 31 with rollers 30 pivotally attached to both ends thereof.
is sandwiched between and slidably attached to a pair of guide plates 32 fixed to the back surface of the auxiliary table 23. By doing this, when the adjustment shaft 27 is rotated with the handle 28, the roller stand 31 moves under the action of the screw portion 27a, and the auxiliary table 23 moves vertically via the guide plate 32, and the auxiliary plate 1
The paper 14 on the pallet 12 placed through the pallet 3 is adjusted vertically. 33 is the auxiliary table 23
It is a stop collar that regulates the movement limit of 34
is a mark written on the bearing 25 to indicate the direction in which the adjustment shaft 27 is pushed or pulled by the rotation of the handle 28. In addition, the base plate 15 and the auxiliary table 23 include
A scale plate 35 and a pointer 36 are provided to display the amount of movement.

Further, the left-right adjustment device 37 is provided with an adjustment shaft that is pivotally supported by a pair of bearings 38 and 39 fixed to the upper surface of the base plate 15 on one side of the lifting table 18 and extends in the width direction of the base plate 15 at the longitudinal center of the base plate 15. 40, and the movement of the adjustment shaft 40 in the axial direction is restricted by handles 41 and collars 42 on both sides of the bearing 38. Further, a threaded portion 40a is provided at the end of the adjustment shaft 27 on the bearing 39 side, and a threaded hole of a rectangular roller stand 44 having rollers 43 pivotally attached to both ends thereof is screwed into this threaded portion 40a. and roller 43
is sandwiched between and slidably attached to a pair of guide plates 45 fixed to the back surface of the auxiliary table 23. By doing this, when the adjustment shaft 40 is rotated with the handle 41, the roller stand 44 moves due to the action of the screw portion 40a, and the auxiliary table 23 moves in the left-right direction via the guide plate 45, and the auxiliary plate 1
The paper 14 on the pallet 12 placed through the pallet 3 is adjusted in the left-right direction. 46 is the auxiliary table 23
This is a stop collar that regulates the limit of movement. Further, the base plate 15 and the auxiliary table 23 are provided with a scale plate 47 and a pointer 48 for displaying the amount of movement.

Further, two pins 49 are implanted at positions that approximately divide the widthwise central portion of each auxiliary table 23 into thirds in the longitudinal direction, and protrude downwardly from the base plate 15 through the oval-shaped holes in the base plate 15. A tension spring 51 is stretched between this pin 49 and a pin 50 planted on the back surface of the base plate 15, and the auxiliary table 2
3 is held in a neutral position where it does not move in any direction. 52 is a lifting table 18
A plurality of front supports are erected and fixed in front of the front support 52, and 53 is a side support that is erected behind the front support 52 and is movable in the left and right direction.

The operation of the paper stacking device configured as above will be explained. During printing work, the pallet 12 loaded with paper 14 is placed on the spherical bearing 22 of the lifting table 18 via the auxiliary plate 13 and the auxiliary table 23, and the pallet 12 is automatically raised by winding the lifting chain 21. Paper is fed. Paper 14 on pallet 12
When it runs out, the machine is stopped and the lifting chain 21
After rewinding the pallet 1 and lowering the lifting table 18 to a lower position than the one shown in the figure, the used pallet 1 is
2 and the auxiliary plate 13 are removed from the lifting table 18 and returned to the paper stacking position on the rail 1. On the other hand, during the above-mentioned printing, at the paper stacking position on the rail 1, paper is being stacked on the trolley 4 that was returned from the paper feeder at the start of the previous printing. That is, a pallet 12 loaded with paper 14 is placed on the trolley 4 fixed on the rail 1 via an auxiliary plate 13, and the pallet 12 is pressed against the front and side abutments at predetermined positions. It is positioned by Therefore, after the printing is completed, the used pallet 12 and auxiliary plate 13 are removed, and the trolley 4 that has finished stacking the sheets is pulled onto the rail 2 in the paper feeder and brought into contact with the stopper 9. make it stop. At this time, lifting table 1
8 is lowered, it does not prevent the trolley 4 from entering, and the auxiliary plate 13 and the auxiliary table 23 do not interfere with each other. Therefore, when the lifting chain 21 is slightly wound to raise the lifting table 18, the auxiliary table 23 also rises and comes into contact with the auxiliary plate 13, and then is raised to remove the pallet 12 and paper 14.
At the same time, it is separated from Trotko 4. Then, when the horizontal support 53 is positioned to correspond to the paper size and the handle 41 is turned, the auxiliary table 23 is moved in the opposite direction of arrow A in FIG. When the side edge of the paper 14 hits the cross rest 53, the movement of the auxiliary table 23 is stopped. Now that the paper 14 is positioned in the left-right direction, when the handle 28 is turned in the pushing direction of the sign 34, the auxiliary table 23 is moved to the front 52 through the roller 30 and the plate 32 by the screw action of the threaded portion 27a. When the front edge of the paper 14 hits the front stop 52, the auxiliary table 2
Stop the movement of 3. The paper 14 is now correctly positioned in the vertical direction. After the paper 14 has been positioned horizontally and vertically, the elevating table 18 is raised to a predetermined position by winding the elevating chain 21, and the printing operation is resumed by switching to automatic elevating mode.
Since the used trolley 4 remains below the lifting table 18, it is pulled out onto the rail 1 and returned to the paper stacking device.

[Effect of idea]

As is clear from the above explanation, according to the present invention, in a paper stacking device of a sheet-fed printing press, a plate-shaped member stacked at a paper stacking position outside the machine is loaded and drawn between the left and right paper feed frames. An elevating table formed as a frame surrounding the transport vehicle is suspended by an elevating chain so that it can be raised and lowered freely, and an auxiliary table is placed on the elevating table so that it can be moved horizontally in each direction, and it can be moved vertically and horizontally to the paper. Providing a means of movement to move in the direction,
The transport vehicle loaded with paper is pulled into the area surrounded by the lifting table that has been lowered to its lowering limit, and by the slight rise of the lifting table, the paper is lifted up from the transport vehicle together with the plate-like member, and the paper is lifted up and down by the moving means. By moving the tray so as to press it against the paper and then raising the lifting table to start printing, the conventional pallet receiving member for aligning the paper and the paper stacking bar for raising and lowering the pallet can be replaced with one. The structure is simplified because the lift table can also be used to wait in the lowered position, pull the carrier into the position, position the paper, and then raise the lift table to start printing. In addition to making the operation easier, since the sheet is positioned by moving the plate-like member on the sphere, the positioning is performed smoothly and accurately.Furthermore, since the elevating table rises directly after positioning, the positioned edge of the paper is Improves paper feeding function without moving.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the paper stacking device for a sheet-fed printing press according to the present invention, FIG. 1 is a plan view of approximately half the width thereof, and FIG. 2 is a side view from A in FIG. 1. 3 are front views seen from the approach direction of the transport vehicle, which is the viewing direction B in FIG. 2. 1, 2...Rail, 4...Transport vehicle (Trotsko),
12... Plate member (pallet), 13... Auxiliary plate,
14... Paper, 15... Base plate, 16... Pipe stay, 17... Plate stay, 18... Lifting table,
20... Chain hanging, 21... Lifting chain,
22... Spherical bearing, 23... Auxiliary table, 24
... Vertical adjustment device, 37 ... Left and right adjustment device, 52
...Maeto, 53...Yokoto.

Claims (1)

[Scope of Claim for Utility Model Registration] An elevating table that is framed to surround a carrier carrying a plate-like member loaded with paper and drawn between left and right paper feed frames, the paper feed frame side An elevating table that is suspended in a horizontal position from the upper part by an elevating chain and is raised and lowered by hoisting and unwinding the elevating chain; an auxiliary table that is placed on this elevating table so as to be movable in each horizontal direction via a sphere; and this auxiliary table. moving means for moving the table in the vertical and horizontal directions of the paper, and lowering the lifting table so that the top surface of the auxiliary table is lower than the top surface of the carrier at the lowering limit of the lifting table. A paper stacking device for a sheet-fed printing press, characterized in that a limit is set.