JPS60118526A - Plate positioning and stopping method - Google Patents

Abstract

PURPOSE:To moderate impact load applied upon a plate at a stop position by projecting a roll over the transport surface of a transport conveyer to the fowward lower surface of a transported plate to float the plate above the transport surface and once reducing the transport speed. CONSTITUTION:When a plate 15 carried in a substantially erect posture along a transport conveyer 33 arrives just before a stop position, a piston rod 29 is expanded to pivot an arm 35 on a support shaft 34 counter-clockwise, and a support roll 36 is projected over the transport surface of transport conveyer 33 so that the forward lower surface of the plate 15 is suported by the support roll 36 and the plate 15 is floated above the transport surface to once reduce the transport speed. Subsequently, a stopper 37 immersed under the transport surface is projected upward in synchronization with projection of the support roll 36 and elastically brought into contact with the forward lower surface of the plate 15, so that with impact load lightened, the plate 15 is positioned and stopped at a stop position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a transport conveyor consisting of a roll conveyor in which a plurality of rolls are arranged at arbitrary intervals, or a belt conveyor in which a belt is suspended between a pair of front and rear pulleys. This relates to a method for once reducing the conveyance speed of a board such as plywood, decorative board, veneer veneer, metal plate, etc. that is being conveyed in an upright position, and then accurately positioning and stopping it at a desired position. .

Normally, the above-mentioned plate is conveyed on the conveyor with its flat surface placed horizontally, and when stopping at a desired position during conveyance, a stopper is placed on the entire front end of the plate in the conveying direction. It is raised so that there is a collision.

At this time of stopping, an impact load is applied to the front end surface of the plate according to the conveyance speed of the conveyor, but since the area of the plate that comes into contact with the stopper is relatively large, the unit load is relatively reduced. The occurrence of damage, buckling, etc. at the front end portion of the plate is almost completely prevented.

Conversely, the conveyance speed of the conveyor is determined according to the processing capacity of the previous or next stage process, and at this time, the conveyance speed is determined so that the plate body can handle this impact load within the allowable range. being considered.

However, if the plate is transported in an upright position rather than horizontally, the impact load will be the same if the transport speed is the same, but the unit load of the plate against the stopper will be different. The result is

In other words, in the former case, the entire front end of the plate is the contact area with the stopper, whereas in the latter, the contact area is only the lower part of the front end of the plate, so the unit load increases dramatically. If the lower front end is buckled, the risk of damage is extremely high.
Moreover, it becomes difficult to accurately position and stop the plate at a desired position.

Next, a specific example of conveying this type of plate in a substantially upright state will be described with reference to FIGS. 1 to 3. In this method, the plate to be heated and pressed is carried in a substantially upright state between the hot plates of each stage of a horizontal multi-stage press.

A left frame 3 and a right frame 4 are arranged opposite to each other on the left and right through an upper cross beam 1 and a lower cross beam 2, and a movable platen 7 can be freely reciprocated in the left and right direction by a ram 6 of a cylinder 5 provided on the right frame 4. On the other hand, between the left frame 3 and the movable platen 7, a movable member 9 is attached to a rail 8 installed on the upper cross beam 1 from both sides of the upper part.
A horizontal multi-stage press 11 is constructed by suspending a plurality of hot plates 10 with protruding parts.

Brackets 1 are attached to the four corners of the heating plate 10 and movable platen 7 at each stage.
2 and a regulating device 13 are respectively arranged to regulate the maximum opening.
A pair of cutout grooves 14 are formed at arbitrary intervals, and below the cutout grooves 14, a conveyor 16 is disposed on the lower cross beam 2 to support and carry out the plate 15 to be heated and pressurized.

On the other hand, on the loading side of the horizontal multi-stage press 11, a loader shelf 17 having the same number of stages and the same left-right spacing as the hot plates 10 in each stage is disposed, and below the loader shelf 17, the plate bodies 15 are placed in each stage. A carry-in conveyor 18 for carrying all at once between the hot plates 10,
It is disposed at the same height as the conveyance surface of the conveyor 16.

Therefore, its lower end is supported on the carry-in conveyor 18, and its upper part is inserted between the loader shelves 17 of each stage.
The plate body 15 which is in an upright state is placed on the carry-in conveyor 1.
8. With the drive of the transport conveyor 16, the transport conveyor 16
They are moved upward and carried all at once between the hot plates 10 on each stage, and inserted into the trenches in a nearly upright state.

At this time, in order to control the position of the plate body 15 in the front-rear direction to the center, for example, a stop plate 20 that can be raised and lowered by fluid movement with the bin contact portion 19 as a fulcrum is conventionally provided, for example, with respect to the conveyance surface of the conveyor 16. The lower front end of the plate body 15 is stopped by the upright movement of the stop plate 20.

However, since the impact load on the plate body 15 due to this impact movement is large as described above, the stopped portion may begin to buckle, break, or bounce due to reaction, causing the plate body 15 to be accurately hit at 20 locations on the stop plate. The result is that the plate body 15 cannot be positioned at the center of the hot plate 10 even if the pair of push-up bodies 21 is raised through the notch grooves 144.

Next, another specific example of conveying the plate 15 in a substantially upright state will be described with reference to FIGS. 4 and 5. In this method, a plate is conveyed in a substantially upright state between the rolls of a vertical coating machine, and the coating is applied to the plate surface.

That is, the applicator roll 23 is placed on the bottom plate 22 that is in close contact with the lower part.
, a doctor roll 24, and a pair of guide rolls 25 are placed in circumferential contact with each other, and a vertical coating machine 26 is constructed by filling the space formed between each roll with a coating agent, and each roll is rotated in the direction of the arrow. At the same time, a feeding roll 27 is provided which rotates in the opposite direction to the rotation direction of the application roll 230, and the lower end of the plate body 15, whose upper both sides are regulated by guide rollers 28, is supported on two drum-shaped rolls. The board is transported in an upright position, and a coating agent is applied to the board surface.

Even in the next step before or after this coating operation, it is necessary to temporarily stop the plate 15 at an arbitrary position in the upright state, and the above-mentioned inconveniences occur each time.

In consideration of the diagonal upward movement, the present invention is to accurately position and stop a plate that is conveyed in an upright state as in the conventional examples without being damaged, as shown in Figs. 6 to 8 below. This will be explained based on examples.

A plurality of rolls 32 are supported between a pair of machine frames 30 via bearings 31 at regular intervals in the conveying direction, and these rolls 32 are driven to constitute a conveyor 33. The support shaft 34 is horizontally supported between the machine frames 3o at an arbitrary position on the conveyor 33, and the base ends of the pair of arms 35 are fitted in the vicinity of each support point.

A support roll 36 is loosely attached to approximately the center of these arms 35 so that it is normally at approximately the same height as the conveyance surface of the conveyor 33, and between the tips of the arms 35, the support roll 36 is conveyed in an upright state. A stopper 37 that comes into contact with the lower front end of the plate body 15 is horizontally fixed. Note that this stopper 37 may be elastically supported using, for example, a leaf spring.

The tip of the piston rod 39 of the lifting fluid cylinder 38, which is supported appropriately on the support of the conveyor 33, the underframe, etc., is attached to the lower tip of one of the arms 35, and the support shaft 34 is used as a fulcrum. It is designed to be able to swing up and down. Furthermore, the seventh
In the figure, reference numeral 10 indicates the parallel hot plates described in the above-described specific example, which are interposed in the upper part of the plate body 15.

Therefore, when the plate 15 is conveyed in a substantially upright state on the conveyor 33, just before an arbitrary stop position, the arm 35 moves to the support shaft 34 due to the extension movement of the piston rod 39.
Since it swings upward in the counterclockwise direction shown in the sixth figure with the support roll 36 as a fulcrum, its front lower surface is supported by the support roll 36, and it is floated.

Therefore, the plate body 15 is supported at two points on the front and rear lower surfaces, and its conveyance speed is temporarily reduced, and the strike knock 37, which had been recessed under the conveyance surface, protrudes in synchronization with this. It comes into elastic contact with the lower front end of the plate body 15 and is positioned and stopped.

Note that it is optional to replace the conveyor 33 with one in which a belt 41 is suspended between a pair of front and rear pulleys 40 as shown in FIG.

As described above, according to the present invention, a roll is protruded from the conveyance surface of the conveyor on the front lower surface of the plate conveyed in an upright state on the conveyor, so that the plate floats above the conveyance surface. After decelerating the conveyance speed,
Since the stopper that protrudes synchronously comes into contact with the lower front end of the plate, the impact load on the plate at the stop position is alleviated, buckling and damage below the front end of the plate are eliminated, and furthermore Bounceback due to reaction is also avoided, allowing accurate positioning and stopping.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing a conventional specific example, Fig. 2 is a side view of the same, Fig. 3 is a front view of the same, Fig. 4 is a plan view showing another conventional specific example, and Fig. 5 is a side view of the same. 6 is a schematic side view showing one embodiment of the method of the present invention, FIG. 7 is a plan view thereof, and FIG. 8 is a schematic side view showing another embodiment of the method of the present invention. 15...Plate body, 33...Transport conveyor, 34...Support shaft, 35・Arm, 36・Support roll, 37・・
Stotsunoku patent applicant Taihei Seisakusho Co., Ltd.

Claims (1)

[Claims] By protruding a roll from the conveyance surface of the conveyor on the lower front surface of the plate conveyed on the conveyor in an upright state, the plate is floated above the conveyance surface and its conveyance speed is temporarily reduced. A method for positioning and stopping a plate body, characterized in that a stopper that protrudes synchronously is brought into contact with the lower front end of the plate body.