JPS598608B2 - Sheet-shaped material feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for sequentially taking out and feeding out laminated paper, synthetic resin sheets, or flexible sheet-like objects such as bags made of these materials one by one. .

Conventionally, the above-mentioned sheet-like materials (hereinafter simply referred to as sheets) have been fed out using a feed roll that presses against the top surface of the top sheet of a stack, or a suction device that sucks sheets one by one from the top. The materials used were those that were sent out.

However, these devices have drawbacks in that several sheets are fed out at the same time in close contact with each other, or the lower sheet in the stack is also peeled off, disrupting the stacked state of the sheets. In the present invention, two belt conveyors for transporting laminated sheets are arranged one behind the other with a gap between them, and a roll is provided near the gap of the conveyor (referred to as the first conveyor) that first sends out the laminated sheet among the conveyors. is a vacuum suction roll, a truck is provided on the conveyor for placing the laminated sheet, the truck is moved horizontally on the two belt conveyors, and the two belt conveyors are moved in synchronization with the moving speed. Run at the same speed and in the same direction as the trolley,
This device is configured to suck the bottom sheet of the laminated sheet using the vacuum roll and reliably feed it downward from the gap. One embodiment of the apparatus of the present invention will be described below.

Figure 1 is a front view (text and diagram) of the device according to the above embodiment.
, Fig. 2 is its plan view, and Fig. 3 is A-0-0- of Fig. 1.
4 is a sectional view taken along line A, and FIG. 4 is a sectional view taken along line BB in FIG.

1 and 2 are belt conveyors having conveying surfaces of the same horizontal height front and back (left and right in FIG. 1) on a beam 60'' supported by a pedestal 60, and the first conveyor 1 is It consists of large-diameter rolls 3, 4, 5, small-diameter auxiliary roll 6, and an endless V-belt that fits into the V-groove of each roll, and the conveyor 2 (second conveyor) similarly includes rolls 17, 20, 18, Auxiliary roll 21 and endless belt 2
θ), the roll 3 is a vacuum suction roll having air suction holes 7, and the suction holes 7 are arranged in a line in the length direction of the roll at appropriate intervals.

The suction hole 7 shown in FIG.
It shall be as shown in . 3A is a plan view seen from above the suction hole 7 of the vacuum roll 3, and FIG. 3B is a plan view of the vacuum roll 3 as seen from above.
) is a sectional view taken along line X-X.

The outer wall surface of only the suction hole portion of the vacuum roll 3 is shaved into a rectangular shape, and the rectangular recessed portion has an opening that matches the hole 7 of the roll 3, and a rubber plate 71 is fitted inside the hole. The plate 72 is fixed with screws 70.

The rubber plate 71 is provided with cross-shaped grooves 7'' that communicate with the rolls and the holes 7 in the rubber plate, so that the suction air of the roll 3 also acts on the grooves 7'. The gap between the rolls 17 of the conveyor C and the second conveyor C forms the gap between the belt conveyors, and the lengths of both conveyors are equal.

One end of the vacuum roll 3 is closed by a blind flange 8 (FIG. 3); A suction tube 11 is rotatably supported by a lower guide plate 9, which will be described later, by a central axis 10 of a flange 8' fixed to the side, and the other end of the vacuum roll 3 is rotatably supported by a lower guide plate 9'', which will be described later. The suction tube 11 is connected by a rotary joint 12 to a tube 13 which is connected to a vacuum pump.

The guide plates 9 and 9' are plate-shaped guide plates extending back and forth on both sides of the first and second belt conveyors on the beam 60'.

Pinions 14 and 14' having the same diameter are fixed to the support shaft 10 and the suction tube 114 at both ends of the vacuum roll 3.

Both ends of the left and right lower guide plates 9, 9' are connected by connecting plates 59 and 37, respectively, and tension bolt openings 5, 24 are provided near both ends of these connecting plates, and the rolls of the first and second conveyors are connected to each other by connecting plates 59 and 37, respectively. By adjusting the positions of 4 and 18, the tension of the V-belts ``, 2'' can be adjusted. The rolls and auxiliary rolls of the conveyor are rotatably supported by the lower guide plates 9, 9''.A certain gap is provided above and parallel to the left and right lower guide plates 9, 9'. Upper guide plates 35, 35
The carriage 25 is supported by the upper and lower guide plates, and these guide plates are provided so as to run back and forth as guides, as will be described later.

The hollow square members 26, 26'', 27, and 2r are underframes that constitute the chassis of the truck, and the underframes 26 on both the left and right sides of the chassis are
, 26' are fixed with racks 32, 32',
The racks mesh with the aforementioned pinions 14, 14', respectively.

The trolley 25 has a box-shaped frame body for storing laminated sheets in the center part, and the frame body has side plates 28, 28'' and a front plate 30.
, consists of a frame plate of a rear plate 31, and bolts 29, 29'' protrude from the front and rear outer sides of the side plates 28, 28'' to connect the underframes 26, 2.
The bolts 29, 29' constitute adjustment bolts.

Wheels 33, 33' are supported by axles 34, 34' at the front and rear of the underframes 26, 26', and both wheels are mounted in the gaps between the upper and lower guide plates 9 and 35 and between 9'' and 35''. When fitted, the wheels have left and right flanges and roll on the upper and lower guide plates as rails.

Therefore, the side plates 28, 28'' and the front and rear plates 30 of the box-shaped frame body
, 31 are close to the upper surface of the V-belt and face it with a small gap.

The front plate 30 and the rear plate 31 stand up perpendicularly to the top surface of the belt conveyor, but their lower edges are bent slightly at right angles inward to the box-shaped frame to form horizontal receivers. It is desirable to configure sections 307, 31''.

The front plate 30 and the rear plate 31 are mounted so that their positions can be adjusted by adjusting bolts 30' and 3' passing through the underframes 27, 27'.

The distance between the front plate 30 and the rear plate 31 substantially determines the longitudinal length of the seat storage frame of the truck 250, and the length is slightly shorter than the length of each of the first and second belt conveyors. be.

A bracket 36 protrudes from the front center of the underframe 27 of the truck (FIGS. 1 and 2), and the tip of the piston rod of an air cylinder 38 provided in front of the underframe of this device is attached to the bracket 36 by a metal fitting 39. are connected together.

Note that 40 and 41 are reinforcing plates for reinforcing the connection between the underframes 26 and 26' of the truck and 27.

A frame body 42 is fixedly provided under the guide plates 9, 9' below the gap between the vacuum roll 3 of the first conveyor and the roll 17 at the rear end of the second conveyor (Figs. 3 and 4). A pinch roll 43 is rotatably supported between the left and right side plates of the box-shaped frame 42, and one end of the spindle of the pinch roll is connected to an electric motor 47 and a speed reducer 45, which are provided on a base plate 48 on the outside of the device. They are connected via coupling rings 44 and 46.

On the left and right sides of the front frame plate 42', guide bars 50, 50' are provided which pass through the plate and support the pinch roll 49 at both ends so as to be slidable back and forth.
The other end protruding forwardly of the screw 53 passes through the support plate 52 fixed to the frame plate 42' by a plurality of support bars 57.
53' via springs 54, 54'. The guide bar 50 is inserted between the frame plate 42'' and the support plate 52.
, 50'', an air cylinder 55 is fixed at the center of the support plate 52, and the tip of the piston rod is fixed to the guide plate 51 with a nut 56 (first, fourth figure).

Note that 58 indicates the upper and lower guide plates 9 and 35, and 9' and 35.
' at their ends (the first
, 2).

Next, to explain the operation of this device, the seat is placed in a box-like frame surrounded by the side plates 28, 28'', the front plate 30, and the rear plate 31 of the above-mentioned truck 25, and the four peripheries of the seat are They are stored from above in an accurate stacked state as if sliding along the plate as shown by the chain line in FIG.

That is, the laminated sheets stored as described above are placed in a rectangular block to fill the four circumferential frame plates. When storing it, the side plates 28, 28' of the box-shaped frame body are adjusted to the size of the seat.
and adjustment bolt 2 so that the front and rear plates 30, 31 fit.
9, 29' and 30'', 31'' for advancing or retracting those plates.

The trolley with the seats stored in this way is in the position shown in FIGS. 1 and 2, that is, on the first belt conveyor 1, and in this state, the air cylinder 38 is activated to pull it forward toward the second belt conveyor 2. And the trolley rack 32,32″
is moved forward, and the pinions 14, 14' that mesh with it are moved forward.
is rotated to rotate the vacuum roll 3, the other rolls 4, 5 and 6 are simultaneously rotated by the V-belt, and the V-belt of the conveyor roll is rotated as the trolley moves forward;
The V-belt runs at the same linear speed as the truck.

In this way, the lower surface of the laminated sheet housed within the frame of the truck comes into contact with the V-belt and moves forward together with the V-belt. At the same time as the truck 25 moves forward, the vacuum pump is activated to start vacuum suction of the vacuum roll 3, and the bottom sheet of the laminated sheets on the truck is sucked.

The suction hole 7 of the vacuum roll 3 has a groove 7'' communicating with the hole to widen the suction opening area for suction, as shown in FIGS. 3A and 3B. The surface of the plate 71 is exposed and becomes a friction surface against the sheet, thereby ensuring the adsorption of the sheet and at the same time ensuring the feeding of the sheet by the roll 3.At the start of the vacuum adsorption, the sheet to be adsorbed The front end of is the front plate 30
When the sheet is placed on the lower end receiving portion 30'' of the sheet, only one sheet of the lowest layer is attracted, and there is no possibility that several sheets are suctioned downward.

The leading edge of the sheet thus attracted rotates so as to wrap around the vacuum roll 3 and is introduced into the gap between the belt conveyors 1 and 2.

The suction hole 7 of the vacuum roll is about 120 meters from the top of the conveyor.
゜When the sheet rotates downward, if the suction suction is stopped and the sheet is released, the leading edge of the sheet will fall further downward.

When the leading edge of the descended sheet reaches the intermediate gap between the pinch rolls 43 and 49, the air cylinder 55 is actuated to advance the pinch roll 49 toward the roll 43.
, 49 with a sheet between them. At the same time, if the pinch roll 43 is rotated by the motor 47, the sheet is sent downward. The rotation speed of the pinch roll 43 is set to match the speed at which the sheet is fed out by the truck.

When the truck moves forward and the rear end of the sheet reaches above the roll 17, it is stopped, and the feeding of one sheet is completed.

Immediately after this completion, the truck 25 is moved backward by the air cylinder 38 to return to its original position, and the next feeding process is repeated.

In addition, the vacuum roll 3 and the top roll 17 of the second conveyor 2
The gap can be adjusted using adjusting bolts 23, 23' on the bearings that support both ends of the top roll shaft.
2 and 22' are support angles of the bolt.

The device of the present invention has the above-described configuration and operates as described above, and uses a single driving motor (air cylinder) to drive the belt conveyor and drive the trolley that stores the laminated sheets. In addition, when traveling on each of the first and second conveyors, the traveling of each conveyor and the traveling of the trolley are performed synchronously and at the same speed, and the laminated sheet stored in the trolley is The sheets are housed in a frame so that their stacked storage condition does not collapse during movement, and the sheets are reliably adsorbed one by one by vacuum rolls and sent out downward, and are then pinched and sent out. Therefore, unlike conventional devices of this kind, sheets are not fed out in a stacked state, or the stacking of sheets is not stacked, resulting in unsmooth and inaccurate feeding.

If a limit switch is installed as appropriate to start and stop the air cylinders used to drive this device, and if an appropriate sequence circuit is used to start, stop, and return each air cylinder in a timely manner, sheet feeding will be automatic. done accurately. The frame of the trolley for storing and transporting the laminated sheets can be adapted to the size of the sheets to be stored by adjusting the movement of the plates constituting the frame.

In addition, depending on the properties of the sheet, the feeding speed of the cart, etc., a pressing device may be installed on the laminated sheet, or the V of the belt conveyor may be
Instead of a belt, a perforated flat belt, a rough belt, etc. can be used to ensure smooth feeding.

[Brief explanation of the drawing]

Fig. 1 is a front (elevation) view of the device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a sectional view taken along line A-0-0-A in Fig. 1, and Fig. 3A is a back view. FIG. 3B is a sectional view taken along the line XX in FIG. 3A (7), and FIG. 4 is a sectional view taken along the line BB in FIG. 1. 1, 2...Belt conveyor, 3...Vacuum suction roll, 4, 5, 17, 18, 20...
Conveyor roll, 7...Suction hole, 7''...
... Thin groove, 9,9'' ... Lower guide plate, 14
, 14'... Pinion, 15, 24...
・Tension bolt, 25...Dolly, 26,2
6″, 27, 2r・・・Bogie underframe, 28, 28
″...Side plate, 30, 31...Front plate and rear plate, 33, 33'...Wheel, 35, 35''...
... Upper guide plate, 38, 55 ... Air cylinder, 43, 49 ... Pinch roll, 47.
・・・・Electric motor, 50,50″・・・Guide bar 60 ・・pedestal, 71 ・・rubber plate, 72 ・・・suit type metal Board.

Claims (1)

[Claims] 1. A first belt conveyor and a second belt conveyor are provided front and back with a gap on one underframe, and a belt conveyor is placed above the first and second conveyors along the upper surface thereof. A trolley is provided that travels at the same speed and in the same direction as the conveyor, and the trolley has a frame body that stores the laminated sheets loaded thereon so that the lowest sheet of the laminated sheets is in contact with the top surface of the belt of the belt conveyor. . A sheet-like material feeding device, characterized in that a roll near the gap of the first conveyor is a vacuum suction roll that operates in synchronization with the start of running of the trolley. 2. A rack is provided on the lower surface of the underframe on both the left and right sides of the bogie chassis, and a pinion that engages with the rack is provided on a spindle at each end of the vacuum roll and the conveyor roll close to the gap of the second belt conveyor, and a pinion is provided to engage with the rack. The sheet feeder according to claim 1, wherein the first or second belt conveyor is caused to travel in the same direction as the truck at the same speed as the truck as the sheet moves forward or backward. Device. 3. The frame plates constituting the laminated sheet storage frame on the above-mentioned trolley are respectively attached so as to be movable and adjustable in a direction perpendicular to the plate, so that the storage area of the laminated sheet storage frame surrounded by the frame can be adjusted in size. Claim 1 characterized in that
Sheet feeding device as described in section.