JPS61114938A - Automatic feeder of plate material - Google Patents

Abstract

PURPOSE:To reliably convey plate materials one by one without injuring the surfaces of the plate materials by providing a lifter rising by the plate thickness every time a plate material is conveyed and an air cylinder extending/shrinking in the conveying direction of the plate materials on the rear end of the plate materials. CONSTITUTION:Stacked plate materials are shifted on a caterpillar conveyor 16 and are shifted to the predetermined position at the center of a lifter 13. Next, the plate materials are borne by a roller conveyor 15, and the front ends of the plate materials are brought into contact with a stopper material. Here the height of the lifter 13 is adjusted so that the uppermost plate material is made equal in height to the gap between the upper edge of the stopper material and a limiting member. In addition, a presser plate 24 presses the surface of the rear end of the uppermost plate material. Next, a cylinder 22 is extended, the rear end face of the uppermost plate material is pressed by a presser plate 25, the front end face of the plate material passes the said gap and is further conveyed forward by rollers. Then, the lifter 13 is raised by the plate thickness. These actions are repeated, thus the plate materials can be reliably conveyed one by one without injuring the surfaces of the plate materials.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to an auto-feeder for plywood, which feeds stacked boards one by one from above in order to perform printing, etc. on the surface of the plywood. 15111.

(Prior art and its problems) Generally, in order to manufacture plywood, glued core veneers and front and back veneers are stacked alternately to deposit jIi layers, and a predetermined amount of laminated board material is pressed into a press machine at once. It is used to compress and join multiple sheets of plywood at once. In order to print a pattern or the like on the surface of this plywood, the laminated plywood must be delivered to the printing device one by one from the top.

A conventional auto feeder that feeds sheets one by one from stacked boards is equipped with a member equipped with a needle pointing downward above the stacked boards, and this member is lowered onto the board to feed the needle. There is one that drives the material into the board, raises the next member, then moves it laterally, and then carries out the board one by one. However, with this configuration, there was a problem in that small scratches were created on the surface of the plate because the needle was driven into the plate.

(Object of the Invention) In view of the above-mentioned circumstances, an object of the present invention is to provide an auto-feeder for plate materials that can reliably transport stacked plates one by one without damaging the surface of the plate materials. There is.

(Structure of the Invention) The auto feeder for plate materials according to the present invention is provided with a lifter that raises the thickness of the plate material each time the plate material is placed and is transported by IB, and the stacked plate material An air cylinder that expands and contracts in the direction of board material removal is placed above the rear end so that its tip can swing freely.At the tip of the telescopic rod of this air cylinder, there is a restraining plate that holds down the surface of the board from above, and an air cylinder that is slightly smaller than the board thickness. A pusher plate is placed in contact with the rear end surface of a single thin plate, and a stopper member is placed vertically so that the tii ends of the laminated plates are in contact with each other, and the stopper member is placed above the stopper member. A limiting member is provided at the stopper material, a gap slightly larger than the thickness of the plate is formed between the upper edge of the stopper material and the limiting member, and a roller is further disposed to carry out the plate material sent out from this gap. ing.

(Embodiment of the Invention) The illustrated autofeeder is incorporated into a plywood printing line, and a pit 12 is dug below a frame 11, and a lifter 13 is disposed in this pit 12. This lifter 13 can be freely controlled to rise and fall by a mechanism (not shown), and has a roller conveyor 15 on the top surface 14 for transferring the plate material in the direction of carrying out the plate material, and a caterpillar conveyor 15 whose transfer direction is orthogonal to the roller conveyor 15. 16 are provided. Either one of the roller conveyor 15 and the caterpillar conveyor 16 is configured to be freely movable in the L direction.

Above the rear end of the plate placed a on this lifter 13, a shaft 17 is fixed to the machine frame 11 in the direction of carrying out the plate, and a screw shaft 18 is rotatably disposed parallel to this shaft 17. There is. A handle 19 is provided at one end of the screw shaft 18, and is configured to be rotatable manually. Furthermore, a horizontal frame 2
1 is fixed, and the stem of an air cylinder 22 that expands and contracts in the direction of carrying out the plate material is swingably supported on this horizontal frame 21, and further,
A spring 23 is installed between the tip of the air cylinder 22 and the horizontal frame 21.
is contracted to elastically urge the tip of the air cylinder 22 downward. At the tip of the telescopic loft of the air cylinder 22, there is provided a holding plate 24 which is horizontal and long in the direction of carrying out the plate material, and whose tip is bent diagonally upward. A decorative press plate 25 is provided.

In addition, a stopper material 26 is vertically disposed on the machine frame 11 in the forward direction in the direction in which the plate material is carried out, and the upper edge 27 of the stopper material 26 is horizontal, and the restraining plate 26
It is located at approximately the same height as the bottom surface of 4. A screw shaft 29 is provided above the stopper material 26 and is screwed into a vertical screw provided on the frame 2B protruding from the machine frame 11. A handle 30 for manually rotating the is provided, and a limiting member 31 is provided at the lower end so as not to rotate, and the gap between this limiting member 31 and the upper edge 27 of the It is slightly thicker than the board thickness, 2g1g1. Furthermore, a pair of upper and lower rollers 32 and 33 are disposed to sandwich the plate material sent out from this gap from above and below, and are driven and rotated by a motor 33 fixed to the machine frame 11. Note that 34 is a conveyor that conveys the sent-out plate material to a printing device (not shown).

(Operation of the Invention) In the sheet material auto feeder configured as described above, first, when the lifter 13 is in the lowered position, either the roller conveyor 15 or the caterpillar conveyor 18 moves up and down, and the conveyance surface of the caterpillar conveyor 16 is moved up and down. The laminated plate materials located above the conveyance surface of the roller conveyor 15 are transferred onto the caterpillar conveyor 16 by a conveying means (not shown), and the laminated plate materials are transferred to the midpoint predetermined position t of the lifter 13 by the caterpillar conveyor IB. Ru. Subsequently, the conveying surface of the reroller conveyor 15 is made higher than the conveying surface of the caterpillar conhair 16, and the laminated plate materials are transferred to the roller conveyor 1.
5, and is transferred in the direction of carrying out the plate material so that the front end of the plate material comes into contact with the stopper material 2B. Here, the height of the lifter 13 is adjusted so that the uppermost plate is at the height of the gap between the upper part 27 of the stopper material 2B and the limiting member 31. Further, the restraining plate 24 is in a state of restraining the surface of the rear end of the uppermost plate.

In such a state, when the air cylinder 22 is extended, the push plate 25 presses the rear end surface of the uppermost plate, and the front end of the plate passes through the gap between the limiting member 31 and the stopper plate 26. It is further conveyed forward by rollers 32. When the air cylinder 22 presses the plate material by a predetermined amount,
It immediately contracts, and the holding plate 24 is placed on the surface of the plate material to be carried out next, and is placed in a standby state. Then, the plate material is further carried out by the rollers 32, and the rear end is placed at the stopper material 2.
After passing through the gap above 8, the lifter I3 rises by the thickness of the plate, and then the F cylinder 22 is extended, and the next plate is pressed and carried out.

By repeating such operations, the stacked plates are conveyed one by one from the top. The pressing plate 25 that presses the rear end surface of the plate has a constant height relative to the plate due to the restraining plate 24 on the surface of the plate, and can reliably press only one plate. In addition, stopper material 2
Due to the gap formed by the upper edge 27 of 8 and the limiting member 31, the number of plates to be carried out is limited to one, and the plates are prevented from being carried out in an overlapping manner.

Incidentally, operations such as raising the lifter 13 and extending the air cylinder 22 are appropriately controlled by a photoelectric switch, a limit switch, etc. (not shown).

(Effects of the Invention) According to the plate auto-feeder according to the present invention, stacked plates can be reliably conveyed one by one from above without damaging the plate surfaces.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view showing one embodiment of an auto feeder according to the present invention, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG.
The figure is a sectional view taken along the line B-B in FIG. 1. 13... Lifter 22... Air cylinder 24
... Pressing plate 25 ... Pressing plate 2B ... Stopper material 31 ... Limiting member 32 ... Roller

Claims (1)

[Scope of Claims] A device for carrying out stacked plates one by one from the top, with a lifter on which the stacked plates are placed and raised by the thickness of the plate each time a plate is carried out. At the same time, above the rear end of the stacked plates, an air cylinder that expands and contracts in the direction of conveyance of the plates is arranged so that the tip can swing freely, and the extensible rod of this air cylinder is attached to the tip of the telescopic rod to move the surface of the plates from above. A restraining plate and a pushing plate that is slightly thinner than the thickness of the plate and abutting against the rear end surface of one plate are arranged, and a stopper material is arranged vertically so that the front end of the stacked plates comes into contact with it. , a limiting member is provided above the stopper material to form a gap slightly larger than the thickness of the plate between the upper edge of the stopper material and the limiting member, and a roller is further provided to carry out the plate material sent out from this gap. An auto feeder for plate materials characterized by the arrangement of.