JPS61150960A - Board material carrying device - Google Patents

Abstract

PURPOSE:To stop board material reliably at predetermined position without breaking the edge by lowering the speed of board material carried with high speed on first conveyor prior to stop position then further lowering at predetermined position and contacting slowly against a stopper. CONSTITUTION:Unit boards 28, 39 carried through first conveyor with relatively high speed are slowed through second conveyor 3 to approach to a stopper 4 with low speed. Upon detection of approach through detectors 6, 6, air- cylinders 46, 56 are contracted through a detection signal to release holding of unit boards 28, 39 through a rotary roll 41 and a belt 45, a rotary roll 51 and a belt 55 thus to release carrying through the conveyor 3. Then the unit boards 28, 39 are advanced through inertia to contact against the stopper 4 slowly thus to retract the stopper 4 from the carrying path while at the sametime, the air-cylinders 46, 56 are extended to fall down the unit boards 28, 39 forwardly and stack.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is characterized in that the conveying speed of the plate material is set to a low speed and the plate material is slowly stopped before the plate material being fed reaches its stop position r. The present invention relates to a conveying device for plate materials.

(Prior art and its problems) Generally, when manufacturing one plywood, glued core veneers and front and back veneers are alternately stacked and stacked, and then a predetermined number of sheets are made into a pile and compressed by a press machine. However, many sheets of plywood are joined together at once.

Then, in order to stack the core veneer and front and back veneers alternately and stack them, the plywood veneers that are successively transported are stopped at a predetermined position and waited, and then sent out to the stacking position at the right time. ing.

Conventionally, in order to stop the plate being transported, a stopper that advances and retreats so as to block the transport path is provided, and by controlling this stopper, the plate being transported is stopped at a predetermined position. Also, it is sent to a deposition position.

However, in the case where the plate material is stopped by a stopper in such a width, the edge of the veneer is easily damaged because the veneer is transported at high speed and comes into contact with the stopper. Plywood formed including veneer becomes a defective product, which is a factor that worsens the yield of a plywood production line. Furthermore, even if the edges of the veneer are not damaged, the veneer tends to bounce off the stopper, causing a one-position shift when delivered to the stacking position, which is still a factor that worsens the yield of the plywood production line. It has become.

(Object of the Invention) The present invention has been made in order to solve the problems of the conventional device, and is capable of stopping the plate material repeatedly from low speed, without damaging the edge of the plate material, and at the same time stopping the plate material at a specified speed. It is an object of the present invention to provide a conveying device for plate materials that can be accurately stopped at a certain position.

(Structure of the Invention) In order to achieve the above object, the plate conveying device according to the present invention includes a first conveyor for conveying the plate by holding the plate between a belt and a roll.
conveyor, followed by a tJS placed in front in the conveyance direction so that the plate material is held between belts and rolls and conveyed.
a second conveyor and a detection device for detecting that the plate material is conveyed to a predetermined position by the second conveyor, and the conveyance speed of the second conveyor is set to be lower than the conveyance speed of the first conveyor. The detection device is configured to release the clamping of the plate by the belt and roll of the second conveyor in response to an output signal from the detection device, and slowly stop the plate from a low speed.

(Embodiment of the Invention) The illustrated conveyance device Wl is provided with a first conveyor 2, 2... and a second conveyor 3, 3, and is driven by rotation of a drive shaft 4 driven by a motor (not shown). has been done.

As shown in 2nd and 3rd Eij, two conveyor means are arranged one above the other in order to convey the front veneer and back veneer of one plywood respectively.

The conveyor means 2I below the gSl conveyor 2 has an air duct 24 provided with a large number of small holes on the upper surface along the lower surface of the belt 23 stretched over the rotating roll 22, and an air duct 24 near the single rotating roll 22. A roll 2B provided at the free end of the vertically swinging arm 25 is in contact with the lower surface of the belt 23. This vertically swinging arm 25 is provided with an air cylinder 27 for vertical movement control. Also, lol
The conveyor means 31 above the Sl conveyor 2 has an air duct 34 provided with a large number of small holes on the upper surface along the lower surface of a belt 33 stretched over another rotating roll 32.
moreover.

Another rotating roll a5 is placed in contact with the lower surface of the belt 33. Then, this rotating roll 35 and belt 3
A roll 37 is provided at the free end of another vertically swinging arm 3B so as to sandwich the vertically swinging arm 3B. An air cylinder 38 for vertical movement control is provided in this vertically swinging 7-m 3B. Note that the one-rotation roller 35 is connected to the upper conveyor means 31.
The belt 23 contacts the lower surface of the belt 33 of the lower conveyor means 21 and at the same time suppresses the belt 23 of the lower conveyor means 21 from above.
is wrapped.

The second conveyor 3 is sandwiched between two conveyance paths of 41 plates 28.38, and two small-diameter rotating rolls 41.51 are provided forward of the terminal end of the @1 conveyor 2 in the conveyance direction. In the conveyor means 42 below the second conveyor 3, a belt 45 is stretched around a roll 44 provided at the free end of a vertically swinging arm 43.
It is in contact with the lower surface of 1. The vertical swing arm 43 includes
An air cylinder 4B for vertical movement control is provided. Further, the conveyor means 52 on the second conveyor 3 is connected to a roll 5 provided at the free end of another vertically swinging member 53.
A belt 55 is stretched around the roller 4, and the roll 54 is brought into contact with the upper surface of the rotating roll 51. Another vertical swinging arm 5
3 is provided with an air cylinder 5B for vertical movement control. In addition, the second compare 3 bell) 45.5
The driving speed of 5 is the bell of the first conveyor 2) 23.3
The drive speed is set much lower than the drive speed of No. 3. Further, the force with which the second conveyor 3 clamps the veneer 28, 39 is greater than the force with which the second conveyor 2 clamps the veneer 28, 39.

The veneers 28.39 that are being conveyed by both the first and second conveyors 2.3 are configured to be conveyed at the conveyance speed of the second conveyor 3.

Sarani, 11th iH! 1 is provided with a stow/bar 4 that advances and retreats in front of the second conveyor 3 in the conveyance direction so as to block the conveyance path of the veneers 28 and 39.

Further, a non-reflective plate 5 is arranged slightly in front of this stopper so as to separate the two conveyance paths, and this non-reflective plate 5
A photoelectric detection device 6.6 is provided so as to be viewed from above and below.

(Operation of the Invention) In the conveying device configured in this way, the air cylinder 27.
38 and press the roll 2B against the belt 23, and with the roll 37 pressed against the belt 33, insert the veneer 28 between the belt 23 and the air duct 24, and insert the veneer 28 between the belt 33 and the air duct 34. When the veneer 39 is inserted, the air pressure blown up from the air duct 24.34 causes the veneers 28 and 311 to move up and down, respectively, from the belt 23.
33 and is conveyed as the bell) 23.33 moves. Furthermore, *The plate 28 is the belt 23
The veneer 33 is sandwiched between the rollers 26 and 26 and transported forward in the transport direction.
The paper is sandwiched between the rollers 37 and transported forward in the transport direction.

Furthermore, when the F cylinders 48 and 58 are extended and the belt 45 is pressed against the one-turn roll 41 and the belt 55 is pressed against the one-turn roll 51, the veneers 28 and 39 conveyed by the first conveyor 2 are rotated. It is held between the roller 41 and the belt 45 and the rotating roller 51 and the belt 55,
It is transported forward in the transport direction.

Thus, the veneers 28 and 39 that have been conveyed at a relatively high speed on the first conveyor 2 are slowed down on the second conveyor 3, and approach the stopper 4 at a low speed. When the detection device 518.6 detects that the veneer 28.39 has approached this side, the air cylinder 48.58 is controlled to contract according to the detection signal, and the air cylinder 48.58 is controlled to contract by the rotating roll 41 and the belt 45 and the rotating roll 51 and the belt 55. Veneer 2
8.39 is released, and conveyance of the veneer 28.39 by the second conveyor 3 is released. In addition, the detection device W1B,
By the detection signal of 8.

The air cylinders 27, 38 of the first conveyor 2 are also deflated, and transport by the first conveyor 2 is also released. Therefore, the veneers 28 and 39 move forward due to inertia from the low-speed conveyance of the second conveyor 3, and gently contact the stopper 4 while slowing down the speed. Then, at an appropriate time, the stopper 4 is retreated from the conveyance path, and at the same time, the air cylinders 48, 56 of the second conveyor 3 are extended, and the veneers 28, 39 are conveyed further forward by the second conveyor 3 and fall. layered and deposited.

Therefore, the veneers 28 and 39 that have been conveyed by the first conveyor 2 at a relatively high speed are conveyed at a low speed by the second conveyor 3 before the stopper 4, and are brought into contact with the stopper 4 at this moderate speed. The impact on the edge of the single plate 28, 39 that hits the stopper 4 is small, the edge is not damaged, and the stopper 4 does not bounce back, so the stopper 4 allows accurate and reliable positioning.

In addition, the detection device! 18.8, the single plates 28 and 38 are detected individually, and the air cylinders 27, 28, 48, 58 are
By doing so, even if the veneers 28 and 33 are transported with a time difference, they can be reliably aligned at a predetermined position by the stopper 4.

(Effect of the invention) According to the plate material conveying device according to the present invention as described above, tj
The plate that has been conveyed at high speed by the conveyor SI is slowed down by the second conveyor before reaching the stop position, and when it is further conveyed to a predetermined position, the conveyance by the conveyor 52 is also released, so the speed is reduced. The plate body can be reliably stopped at a predetermined position without damaging the edge of the plate body by slowing down and gently abutting the stopper, and without rebounding due to abutment against the stopper.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view showing half of an embodiment of the plate conveying device according to the present invention from the center line, and FIG.
-x sectional view; FIG. 3 is a YY sectional view in FIG. 1; 2: first conveyor a: second conveyor 6: detection device 22.32,
35, 41, 51: Rotating roll 23.31, 45, 55
: Belt 2B, 37, 44, 54: Roll, 28, 29
: Veneer patent applicant Kitagawa Seiki Co., Ltd. Figure 2 Figure 3

Claims (1)

[Scope of Claims] A first conveyor that conveys a plate material while holding it between a belt and a roll, and a second conveyor that is arranged in front of the conveyor so that the plate material is held between a belt and a roll and conveys it. comprising a conveyor and a detection device that detects that the plate material is conveyed to a predetermined position by the second conveyor, and the conveyance speed of the second conveyor is set to be lower than the conveyance speed of the first conveyor; A conveying device for a plate material, characterized in that the plate material is stopped from a low speed slowly by releasing the clamping of the plate material by the belt and roll of the second conveyor in response to an output signal of the detection device.