JPS6067357A - Method of loading sheet-like material and loading device - Google Patents

Abstract

PURPOSE:To make it possible to pile up sheet-like materials without the materials being harmed, by making the upper transfer section of a belt conveyor extendable and retractable so that the sheet-like material transfer section is extended, and as well by pulling back the front section under the stop condition of the belt conveyor upon loading. CONSTITUTION:When a fixed length material A to be pipled up is shifted onto a loading conveyor 41 from a transfer conveyor 31, air pressure for a cylinder 52 is reduced, simultaneously, and a loading head drive electro-magnetic clutch is turned on while leaving a belt 47 its travelling condition. Therefore, a loading roll 43 is extended to a position remote from the front end at a speed equal to or higher than that of the belt 47 so that the upper transfer section 47a of the belt 47 is extended to a longer length to feed a fixed length material A' forward. When a fixed length material A' on the belt 47 reaches a position right above a loading guide 73, the belt 47 comes to a stop at once, and the loading roll 43 is returned rearward.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides the following advantages: In a continuous production line for sheet-like products,
The present invention relates to a stacking device for sequentially stacking sheet materials cut to a fixed length.

For sheet-like materials, especially ultra-thin sheets, soft sheets, or sheets overlaid with eaves-proof mounts, such as hard and soft synthetic resin sheets, from long ones to easy handling during use. The holes are cut out to a certain length and stacked with a mount interposed.

Various methods have been proposed for conventional sheet-like object loading methods, and some examples are shown in FIGS. 1 to 4.

The first example shown in FIG. 1 is a loading method using an inclined table, in which an inclined table 3 on which rollers 2 are lined up is placed in front of a cutter 1 that cuts the sheet-like material (A). Sheet-like objects (A) that have been allowed to fall naturally are stacked on a loading platform 4.

In the case of this first example, when sliding on the roller 2 and
The sheet-like material (A) may be scratched due to sliding on the loading table, and if a mount is used, the mount may peel or wrinkle, and if the sheet-like material is thin, it may be difficult to align and stack the material. I have the disadvantage of being an introvert. Note that wrinkles in the backing paper (: 1) When sheet-like objects are stacked one on top of the other, the product may become distorted and may become defective.

Next, the second example shown in Fig. 2 is a flotation method using a belt conveyor and air. A loading platform 4 is arranged in front of the loading platform 5, and the sheet material (A) sent from the conveyor 5 onto the loading platform 4 is floated by air blowing from a nozzle 6 disposed below. It is designed so that it can be transferred up to

This second example is particularly used for thin sheet materials, but the sheet materials tend to be prone to cracks due to air blowing up, and air is also interposed between the sheet materials, causing unevenness in the stacked state. .

In addition, when using a mount, static electricity causes adhesion between the mount and the /-1-shaped object, which causes wrinkles on the mount. ing.

The third example shown in FIG. 3 is a clamp-based pick-up method, in which a clamp 7 placed in front of the cutter 1 clamps the end of the sheet-like material (A), and the sheet-like material (A) is moved by the movement of the clamp 7. A) is a loading platform 4. J: 1 drawer is pulled out and released at the fixed position.

However, with this clamping method, the position and timing of clamping the end of the sheet-like object are extremely important, and troubles due to clamping are likely to occur, as well as the problem that the already loaded object may be turned over by the clamp. There is.

The fourth example shown in FIG. 4 is an air float table system, in which an air float table 8 having a large number of air jet holes on its upper surface is arranged in an inclined manner in front of the cutter 1, and the sheet-like material after cutting is (A) is floated with air and dropped onto a loading table 4, and an air blowing nozzle 6 is provided at the tip of the table 8.

However, since the air float table method uses air to push up from the outside, it requires a certain degree of rigidity for the conveyed object. Especially for soft, thin sheet-like objects, the middle part bulges and the average The levitation is on the inside.

As described above, all of the conventional stacking methods have many drawbacks and problems, and it is extremely difficult to stack ultra-thin sheets and soft sorting sheets accurately without any problems.

This invention was developed to realize the alignment and stacking of ultra-thin or soft sheets and sheet-like sheets with a backing paper over them. It is an object of the present invention to provide a method for stacking sheet-like objects that can be stacked in an aligned manner without causing any problems, and a stacking device that can carry out this method with a simple structure.

The structure of the present invention is such that when a loading conveyor with a telescopic upper conveyance section receives a sheet in a shortened state, the upper conveyance section extends at a speed equal to or faster than the belt running speed and transfers the sheet to the loading platform. Then, the belt is stopped and its leading edge is pulled back to allow the sheet-like material to fall from the leading end into the loading space, and the relative positional deviation between the sheet-like material and the belt is removed. This allows it to be dropped without causing any damage.

Hereinafter, the present invention will be explained based on FIGS. 5 to 12 of the accompanying drawings.

As shown in FIGS. 5 and 6, the loading device includes a mount supply unit 11 that stacks -C interleaving paper CB) on the sheet-like material (A) that has come out of the sheet-forming machine, and a sheet-like material (A) and mount (B)
a fixed length cutting 1 analysis section 21 that cuts the laminate into a predetermined length;
A transport conveyor 31 for transporting the cut sized laminated body (8'), and a loader placed on the +7il side of this conveyor 31 to forward the sized laminated body (A') sent from the conveyor 31. It is composed of a conveyor 41 and a loading cart 71 arranged at the front F section of the loading conveyor 41 so as to be able to move up and down.

The regular length cutting section 21 is swingable between a first pinch roll 23 driven by a motor 22, a second pinch roll 24 disposed in front of this roll, and both rolls 23 and 24. The touch roll 25 is arranged as follows, and the cutter 26 is arranged in front of the second pinch roll 24.
The mount (B) is given a constant tension by a powder brake, the wrinkles are smoothed out by the expander roll 12, and then the first pinch roll 23 is applied to the -F side of the sheet 1-like material (A). The mount (B) is attracted to the F side of the sheet-like material (A) by static electricity that is charged during sheet forming.

The touch roll 25 is equipped with a potentiometer 27 (resistor) that detects the amount of walnuts in the sheet material (A) between the front and rear rolls 23 and 24, and the second pinch roll 24 is driven by a servo motor 281. At the same time, the rotational speed is controlled by the potentiometer 27, and a rotary encoder (pulse generator for measuring length) 29 is placed on one shaft end, and a fixed length signal is sent to the other shaft end to stop the pinch roll. The electromagnetic brake 30 crashes several times.

The cutter 26 is moved up and down via a crankshaft and a ram by an electromagnetic clutch brake (not shown).
The straight shear blade 1 is designed to cut a sheet-like material (-), and when the cutter 26 is in operation, the second pinch roll 24 is in a stopped state.

When cutting with the cutter 26, the sheet material (A) slackens between the rolls 23 and 24, and the touch roll 25 is lowered. When cutting is completed, the cutter 26 reaches the top dead center, the second pinch roll 24 is driven again, and when the touch roll 25 rises, the rotation of the servo motor 28 is controlled to slow down.

In the conveyor 31, a belt 32 runs at the same speed as the circumferential speed of the second pinch roll 24 by the same driving source as the second pinch roll, receives the cut laminate (A') to the front, and carries it forward. It is supposed to be sent to

As shown in FIGS. 7 and 8, the loading conveyor 41 includes a return roll 42 at the rear, a loading roll 43 at the front,
A plurality of fixed position rolls 44 disposed at the upper part between both rolls 42 and 43, and a dancer roll 45 and a drive roll 46 disposed so as to be movable up and down directly between each fixed position roll 44. An endless belt 47 is wound one after another, and a motor 48 connects the drive roll 4 through a reducer 49.
6, the belt 47 is transferred to the conveyor 3.
It is designed to run at the same speed as 1 or at 2 to 3 times the speed.

The loading roll 43 is supported at both ends by a head 51 that slides along a guide rail 50 to form a fixed length stack (A').
The dancer roll 4 can be moved freely in the conveying direction.
5 is supported at both ends by cylinders 52 with lifting tables on both sides that move up and down along vertical guides 53.
4 is provided with a pinion 56 that meshes with a rack 55 arranged in the vertical direction so that the downward movement is synchronous.

An endless chain 58 parallel to the guide rail 50 is arranged between the sprockets 57 arranged at both ends of the guide rail 50 on both sides, and the reducer 5 with an electromagnetic clutch brake
The endless chain 58 is run by a motor 60 via the chain 9. A head 51 is connected to a part of the chain 58, and the running of the chain 58 moves the loading roll 4.
3 is pulled out forward in the conveying direction at a speed that is equal to or faster than the running speed of the belt 47.

When the loading roll 43 is pulled forward, the upper conveying section 47 between the return roll 42 of the belt 47 and the loading roll 43
a is extended, and the dancer roll 45 rises by the amount of extension, and FIG. 9 shows a state in which the loading roll 43 is at its most advanced position.

In addition, the loading roll 43 is returned to the retracted position and the upper conveyance section 4
71 [In this case, the Schilling-52 Tetancer roll 45 should be pulled, and at this time the endless chain 58 will be reversed.

The endless belt 47 in the Nao, IJ & loading conveyor 41 has a large number of narrow belts arranged side by side, and this belt 47 has been subjected to antistatic treatment.

In addition, in the upper part between the transport conveyor 31 and the loading conveyor 41, a regular-sized stacked body (A5) placed on the loading conveyor 41 is quickly transferred onto the belt 47 whose speed is faster than the feeding speed. An air nozzle 61 is provided as a pressure mechanism for pressurizing the sheet by spraying air for a fixed period of time.

The self-propelled loading trolley 71 is equipped with a table lifter 72, which lowers as the loading progresses so as to always maintain a constant position on both sides of the loading vehicle using a photoelectric tube or the like. Loading guides 73 are arranged at the four corners directly above 71. , as shown in FIG.
1 shortens the upper conveying section 47a by retracting the loading roll 43.

The sheet-like material (A) produced by the sheet forming machine is cut into regular lengths by a cutter 26 after being overlapped with the mount (B).
It is sent forward by a conveyor 31.

When the standard size stack is transferred from the transport conveyor 31 to the loading conveyor 41'2, at the same time the air pressure to the cylinder 52 is reduced to the extent that it applies tension to the belt 47, and the belt 4
7 is still running, the loading head driving electromagnetic clutch is turned on, and the loading roll 43 is stretched to the tip apogee at the same speed or faster than the belt 47, as shown in FIG. The conveying section 47a is elongated and sends the fixed-length stacked product (A) forward.

When the fixed length stack (A') on the belt 47 reaches a position directly above the loading guide door 3, the belt 47 stops instantly.
High pressure air is supplied to the cylinder 52 to act in the contraction direction, and at the same time the loading head drive motor 60 is reversed.

For this reason, as shown in FIG. 10, the loading roll 43 is pulled back, and the regular-sized laminate (A5) is left behind in the guide 73 set below and falls. Loading is completed when the vehicle returns to its most retracted position.

At this time, the belt 47 is in a completely stopped state, and as the belt 47 is pulled back by the dancer roll 45, the sheet-like materials, interleaf paper, etc. that fall from the tip of the loading roll 43 are removed.
There is no relative positional shift between the belt 47 and the belt 47, and by pulling back the belt 47, the sheet-like materials and the backing paper can be stacked without having the same adverse effect.

As described above, according to the present invention, since the structure is as described in ``2'', the following effects are obtained! : There is.

(1) The upper conveyor section of the belt conveyor is expandable and retractable,
The upper conveyor section is extended when conveying sheets, and the leading end is pulled back when the belt is stopped when loading sheets, so there is no rubbing between the sheets or between the sheets and the belt, which prevents scratches. This allows for stacking without the occurrence of

(2) Sheet-like objects are conveyed by a belt conveyor and stacked by dropping them from the leading edge, so sheet-like objects can be stacked regardless of whether they are soft, thick or thin, or with or without a backing paper.

(3) Since there is no need to use push-up using air or the like, even soft or bulky sheet-like materials can be aligned and stacked.

(4) There is no need to push up by blowing air, so
Static electricity is less likely to be generated on sheet-like materials, allowing for smooth stacking by dropping.

(5) Since there is no slippage between the belt and the sheet-like material, even if the mounts overlap, they can be stacked without causing wrinkles in the mounts.

(6) Since conveyance and stacking are performed using a belt, multiple rows of sheet-like materials can be stacked at the same time.

[Brief explanation of the drawing]

1 to 4 are explanatory views of different examples of conventional loading methods, FIG. 5 is a front view of the loading device according to the present invention, FIG. 6 is a plan view of the same, and FIG. 7 is the same as above. 8 is a vertical sectional side view of the main part enlarged, FIG. 9 and 10 are explanatory diagrams showing the operating state of the same, and FIG. 11 shows the tip of the loading conveyor in the same. Enlarged vertical front view,
FIG. 12 is a longitudinal side view. 21 is a standard length cutting section, 26 is a cutter, 31 is a conveyor, 41 is a loading conveyor, 42 is a return roll, 43
45 is a loading roll, 45 is a dancer roll, 47 is an endless belt, 47a is a transport unit, 50 is a guide rail, 51 is a head, 72 is a loading trolley, (A) is a sheet-like material, (I is a mount , (A') is a fixed-length laminate. Patent applicant: Konan Sekkei Kogyo Co., Ltd. r1 Agent: Kama 1) Letter d

Claims (2)

[Claims] (1) Using a loading conveyor with a length of the upper conveyance section of an endless belt that is expandable and retractable, sheets are supplied to the loading conveyor with a shortened upper conveyance section, and when the sheet-like articles are received, the -L of the loading conveyor is used. The belt conveyor is stretched forward in the conveyance direction at a speed equal to or faster than the belt traveling speed, and when the sheet-like material on the loading conveyor reaches a position directly above the loading space, the belt stops running, and then the belt is stretched out. A sheet characterized by shortening the upper conveying section by pulling the leading end back and allowing the sheet-like object to be dropped from the leading end of the belt into the loading space without causing a relative positional shift between the sheet-like object and the belt. How to load objects. (2) A dancer roll that bends the middle of the belt is moved up and down by a lifting drive at the bottom running part of the loading conveyor, which has an endless belt wound between the loading roll at the tip and the return roll at the rear. loading of sheet-like objects, the loading roll being arranged so that the loading roll is movable in the front and rear directions, and equipped with an advance/retreat drive machine that moves the loading roll forward at a speed equal to or faster than the belt running speed; Device.