JPH0449136A - Device for arranging sheets in alignment and coincidence - Google Patents

Abstract

PURPOSE: To accurately align and match side face fringes of a sheet block by using a movable support assembly body for aligned shoe movable in the transverse direction in a device feeding wave-shaped sheet into a machine operating at a very high speed such as a printing machine. CONSTITUTION: A stack 18 of sheet is received on a vertically movable elevator 11, is positioned in the transverse direction, and then rises up to a lock discharge position. When a block pusher 16 moves a block 17 of sheet to a movable reversing frame 13, the reversing frame 13 oscillates by 180 degrees around a shaft 19 on a frame work 10, is reversed, and discharges a fifth block 17 to a receive end of a feed-in conveyor 12. A pair of aligning shoes 25 on each side face of the reversing frame 13 are engaged with a side face fringe of sheet in the block 17 to match fringes of sheet mutually. A fixed channel 20 attached to the reversing frame stores an endless chain 21, and the aligned shoes 25 connected with a chain joint thereof are engaged with a side fringe of the block 17 to position the block 17 in the longitudinal direction.

Description

[Detailed description of the invention] Ll upper 25 yu l! The apparatus described herein relates to an apparatus for picking up and feeding flat corrugated sheets in an overlapping pattern along a path of travel.

east! Oh my! For manufacturing corrugated paper cartons or boxes, rectangular corrugated sheets or blanks are first produced in a machine known as a corrugator. The sheets are then stacked for storage and handling purposes and then they are processed individually by a printer or embossing cutter that prints or machine each sheet into carton blanks according to the customer's order.

Printing machines and embossing cutters operate at very high speeds.

For such machines, simply feeding successive vertical corrugated sheets into an infeed hopper is physically labor intensive to accurately position each stack within the hopper. Inefficient. The amount of labor required results in interruptions or slowed down operation of the machine being fed.

The machine and method of the present invention maintains a continuous supply of corrugated sheets within the infeed hopper of a printing or embossing cutter machine even during high speed operation. This is accomplished by taking the corrugated sheets and feeding them in a continuous overlapping manner into a receiving hopper of the machine processing the sheets at a feed rate that does not interrupt operation of the sheet processing machine.

If the incoming sheets or blanks are handled in very large stacks, each stack is first divided into several smaller "blocks" and then longitudinally guided to the blank processing machine into which they are fed. It has been found to be advisable when designing the machine to handle them in continuous overlapping along the passageway.After being divided, each block is either reversed or overlapped in the car to lead to the gate. placed on the conveyor.

The task to be solved is to divide a large corrugated sheet or blank into several blocks of identical dimensions, after it has been divided from the stack and placed on the receiving end of a moving conveyor, the Side edges must be accurately aligned and aligned. Such lateral alignment is difficult for successive overlapping operations.

The prefeeding machine must meet the various infeed requirements of downstream machines and therefore requires flexible matching capabilities.

The exemplary disclosure uses a novel movable support assembly for a laterally movable alignment shoe. Each shoe can be adjustably connected to the opposite chain tier to align and align the edges of the block along or off-center on the machine, as well as along the side edges of the block. let

East-Goichi! The machine shown in the drawing is designed for removing and prefeeding corrugated sheets. The machine operates from vertical stacks of the sheets which are stored and handled prior to use in high speed processing machinery associated with the production of corrugated paperboard cartons. The depicted machine feeds the sheets in a stacked manner along a longitudinal path on a conveyor that leads to an infeed hopper (not shown) of a downstream processing machine.

FIGS. 1-6 diagrammatically depict the general operation of sheet prefeeding devices as disclosed herein.

In FIG. 1, a stack 18 of sheets is received on vertically movable elevator 11. In FIG. The elevator 11 is also laterally adjustable relative to the longitudinal path of the infeed conveyor 12 so that it can initially stack 18 laterally across the longitudinal path of the sheets on the infeed conveyor 12.
position. Such lateral positioning may be relative to the machine centerline, off-centerline, or reference edge; after being received and laterally positioned, the stack 18 is The block is raised to the block ejection position (Fig. 2). In this position, the topmost sheet in the stack 18 is on the block butcher 16.
and the open bottleneck of the frame 13 of the reversing device.

The block pusher 16 moves the blocks 17 of each sheet to the movable reversing frame 13 as shown in FIG. 3.Then, as shown in FIG. Pivoting shaft 19 on workpiece 10
Swings 180 degrees around. FIG. 5 depicts the vertical position during such rocking.

The reversed block then lowers its altitude, preparing the block 17 to be discharged to the receiving end of the feeding conveyor 12. The sheets within each block are sequentially lateral overlap gates 15
engage with. The sheets are pulled under the overlap gate 15 in overlapping rows, as depicted on the right side of FIG.

Figures 7 and 8 are schematically depicted in Figures 1 through 6;
The reversing frame 13, which is detailed in the figures, acts as a block transport frame, which frame moves blocks of sheets from a first position relative to the elongated infeed conveyor 12 for receiving blocks 17 of sheets onto the infeed conveyor. 12 to a second position provided above the receiving end.

block! The inventive assembly for aligning and registering 7 is suitable for any block transfer frame that moves a block of sheets separated from an incoming stack and deposits the block of sheets onto the receiving end of the infeed conveyor 12. Available for use. The depicted frame 13 reverses each block while being transferred between the stack 18 and the infeed conveyor 12. however,
Where reversal is not required in continuous sheet processing equipment, the block moving frame is
0 and moves the block 17 vertically within the range necessary for the block transfer process
If the design of the machine allows, the block 17 can be fed directly into the receiving end of the infeed conveyor 12.

A pair of laterally movable alignment shoes 25 on each side of the reversing frame 13 engage the side edges of the sheets in the block 17 to align the edges of the sheets with each other.

The alignment shoe 25 also aligns and registers the edges of each block 17 in the longitudinal path of the machine during positioning of the blocks of sheets laterally across the longitudinal path.

The reversing frame 13 includes a parallel conveyor belt 14 along the lower side of the gutter at the location shown diagrammatically in FIG.
is shifted longitudinally along the path of the machine into the bottleneck of the reversing frame 13 in preparation for reversing.

Details of the alignment assembly are best understood from FIGS. 9-12. These figures depict the assembly separately from the block transfer frame used therein (FIGS. 7 and 8).

The aligning assembly has a fixing channel 2 mounted so that it is fixed to the block reversal frame in which it is used.
It is supported along 0. channel'! O is channel 2
An endless elongated chain 21 powered by a motor shown at 22 through a drive sprocket 23 at one end of the 0 and an auxiliary idler sprocket at the other end.
is stored. The protruding upright plates of two opposing alignment shoes 25 are slidably mounted along the open upper edge of the channel 200 by guide blocks 26. The guide block 26 is made of a low friction material. Guide block 26 acts as a bearing to allow free movement of each alignment shoe 25 relative to channel 20 as required.

The chain 21 has parallel ranks running on opposite sides.

Each rung includes two elongated chain joints (Jio and FIG. 12) selectively bolted to one alignment shoe 25, through which the chain joint 27 passes, as depicted. It has a plurality of aligned openings 28. The bolt 29 connecting the chain joint 27 to the aligning shoe 25 is receivable within the selected opening 28, determined by the desired central position for the block 17 across the longitudinal path of the device.

Figures 13, 14 and 15 diagrammatically depict several possibilities that can be used during aligning the blocks of sheet 17 across the longitudinal path of the machine. The center line of this machine is indicated by 31.

In FIG. 13, each alignment shoe 25 is
The chain joint 24 is connected to the chain joint 24 through openings 28 arranged at equal intervals on each side of the chain joint 24 .

The motor 22 transmits power to the chain 21, and the alignment shoe 2
If you move 5 inward, the alignment shoe 25 will be 17 of the block.
The lateral edges are engaged to center the block laterally across the longitudinal path of the machine relative to the centerline 31.

Where off-center alignment is required by downstream equipment, this can be achieved by off-center coupling of the alignment shoes 25 relative to each other. Opening 28 selected for bolt 29
is then separated from the centerline 31 by a distance that is either greater or less than the openings selected for the remaining alignment shoes 25. When chain 21 brings together the alignment shoes, block 1
The center lines of 7 are aligned off center.

Since some downstream machines require that the block 17 be aligned at the edge of the machine rather than at the centerline, provision is made in the illustrated alignment assembly to accommodate such requirements. This is one alignment Shu 2
5 from its associated chain joint 27 and fixing the alignment shoe 25 in the desired edge position. As can be seen in FIG. 11, the guide block 26 of each alignment shoe 25 is threadably capable of receiving a removed bolt 29, which is then secured to an elongated strip 33 along the center of the channel 21.
to tighten the guide block 26 into the channel 20 in the desired position along the length of the channel. The remaining alignment shoe 25 has the block 17 fixed to the alignment shoe 2.
5 to align the edges along line 34 as depicted in FIG.

[Brief explanation of drawings]

FIG. 1 is a diagram depicting the receipt of a stack of sheets; FIG. 2 is a similar diagram showing the raised stack; FIG. 4 is a similar view showing the pivoting movement of the reversing device; FIG. 5 is a schematic sketch of the reversing device in the upright position; FIG. 7 is a front view of the reversing device in the position shown in FIG. 5, FIG. 8 is an enlarged end view of the reversing device of FIG. 7, FIG. 9 is a front view of the alignment shoe assembly, and FIG. 10 is a front view of the reversing device in the position shown in FIG. A sectional view taken along the line 10-10 in Fig. 9, and Fig. 11 a sectional view taken along the line 11-11 in Fig. 9.
FIG. 12 is a sectional view taken along the line 12-12 of FIG. 1O,
Figure 13 is a schematic top view depicting the operation of the alignment shoe for centering blocks of sheets; Figure 14 is a schematic top view depicting the operation of the alignment shoe for aligning blocks of off-centered sheets; Figure 15 is a schematic top view depicting the operation of the alignment shoe to align blocks of sheets to one edge. 11... Elevator, 12... Conveyor conveyor,
13... Reversal frame, 15... Lateral overlapping gate, 16... Block butcher 117... Block, 18... Stack, 20... Fixed channel,
21... Chain, 22... Motor, 23... Sprocket, 25... Alignment shoe, 26 River guide block, 27... Chain joint, 28... Opening, 29... Bolt , 33... Long and thin strip. No minister! ” No=

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Claims (1)

Claims: 1. An aligning device for removing and feeding corrugated sheets, the apparatus comprising: an aligning device for removing and feeding sheets from a vertical stack and feeding them into a longitudinal path; a powered elongate infeed conveyor having a motor, and movable relative to said elongated infeed conveyor from a first position adapted to receive blocks of sheets to a second position in which blocks of sheets are deposited at the receiving end of said infeed conveyor. a block transfer frame including a lateral guide member; a pair of laterally opposed alignment shoes attached to the guide member; selectively transmitting relative motion between the alignment shoes across the block transfer frame, (1) aligning edges of sheets within blocks with each other on the block transfer frame; )
aligning sheets, comprising: (3) drive means for positioning said block laterally across said longitudinal path; and (3) driving means for positioning said block laterally across said longitudinal path. and matching device. 2. said drive means comprising an endless chain having parallel runs running oppositely, each rung of said chain including a chain joint mounted to releasably connect with one of said alignment shoes; 2. The device of claim 1, characterized in that: 3. said drive means comprising an endless chain having parallel runs running oppositely, each rung of said chain moving said alignment at a selected adjustable position along the length of said chain rung; 2. The device of claim 1, including a chain joint mounted in releasable connection with one of the shoes. 4. The apparatus of claim 1, further comprising releasable means on said guide member and each alignment shoe for selectively locking said alignment shoe to said guide member in a fixed position. .