JPH04153162A - Work separation control unit - Google Patents

Abstract

PURPOSE:To allow the continuous separation of soft works by instructing a set distance to a switching suction area corresponding to a selected damper device to a distance counter circuit, when a work reaches the switching suction area. CONSTITUTION:When a work 5 reaches a switching suction area, a distance counter circuit 34 instructs the operation of a damper device 12c to an opening and closing control circuit 31, whereby the work 5 is separated from a vacuum conveyor 7 and fallen down in the switching suction area. The works 5 are fallen continuously in this switching suction area, and when a determined number of pieces is counted up by a piece number counter circuit 32, the switching of the damper device 12c which is an operating target is instructed to the opening and closing control circuit 31 by a damper selecting circuit 33, and a set distance to a switching suction area corresponding to the newly selected damper device 12c is instructed to a distance counter circuit 34 by a damper position setting circuit 35. Thus, soft works 5 can be separated every determined number of pieces.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a work separation control device that separates semi-finished products in a continuous state on a production line one by one in a continuous manufacturing process of plate-shaped products such as building materials. Regarding.

Conventional technology Traditionally, in the process of manufacturing plate-shaped building materials such as wall materials,
After the dough-like raw material is extruded into a plate shape of an appropriate thickness, it is continuously shaped into a predetermined shape on a processing line. Then, the shaped semi-finished workpieces that are continuously transported are stacked in multiple stages on a pallet, and each pallet is transferred to the curing process.

Problems to be Solved by the Invention However, semi-finished workpieces are soft and deformable, making them difficult to handle.
The challenge was how to separate workpieces that are continuously transported into individual pieces.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a workpiece separation control device that can continuously separate soft workpieces.

Means for Solving the Problems In order to solve the above problems, the workpiece separation control device of the present invention includes a vacuum conveyor that continuously conveys the workpieces, and has switching suctions formed at multiple locations in the conveyance direction of the vacuum conveyor. By operating the damper device corresponding to the switched suction area to cut off the suction force to the area,
In the workpiece separation device that drops the workpieces in the switching suction area, the workpieces are removed in response to detection signals output from an opening/closing control circuit that controls the opening and closing of each damper device and a workpiece detection sensor installed at the starting end of the vacuum conveyor. a damper selection circuit that instructs the opening/closing control circuit to select a damper device in response to a sheet count up signal output from the sheet counter circuit; A distance counter circuit receives a pulse signal from the workpiece to measure the conveyance distance of the workpiece and instructs the opening/closing control circuit to operate the damper device, and a distance counter circuit receives a detection signal output from the workpiece detection sensor to tell the distance counter circuit when to start measurement. The damper position setting circuit also includes a damper position setting circuit that instructs the distance counter circuit to a set distance to the switching suction area corresponding to the damper device selected by the damper selection circuit.

Effect: With the above-described configuration, the presence of the workpiece is detected by the workpiece detection sensor at a position on the starting end side of the vacuum conveyor, and the number counter circuit counts the number of workpieces passing the workpiece detection sensor. In addition, the damper selection circuit instructs the opening/closing control circuit to select the damper device to be operated in the initial setting, and upon receiving the detection signal output from the workpiece detection sensor, the damper position setting circuit causes the distance counter circuit to correspond to the damper device. Instructs the set distance to the switching suction area to be changed, and also instructs to start measuring the transport distance of the workpiece. Measurement by this distance counter circuit is performed by counting pulse signals output from the encoder of the vacuum conveyor.

When the workpiece reaches the switching suction area, the distance counter circuit instructs the opening/closing control circuit to operate the damper device, and the opening/closing control circuit operates the damper device to cut off the suction force to the switching suction area, and the workpiece is separated from the vacuum conveyor and dropped below the switching suction area.

Then, the workpiece is continuously dropped into the switching suction area,
When the number counter circuit counts up a predetermined number of sheets, the damper selection circuit instructs the open/close control circuit to switch the damper device to be operated, and the damper position setting circuit instructs the distance counter circuit to switch the damper device to be operated. The set distance to the switching suction area corresponding to the device is instructed. Then, by repeating the above-described operation, a predetermined number of workpieces are dropped into each switching suction area.

EXAMPLE An example of the present invention will be described below based on the drawings. Second
In Figures to Figure 4, at the end of the first conveyor 1,
A pair of second conveyor 3 via scrap damper 2
are arranged in a connected manner, and each second conveyor 3 forms a branch path.

A pair of third conveyors 4a and 4b are arranged in series following the terminal end of each second conveyor 3, and the third conveyors 4a and 4b form an introduction path. Further, the conveyance speed of the third conveyor 4a located on the upper side in the conveyance direction is set to be slower than that of the third conveyor 4b located on the lower side. Further, a workpiece detection sensor 6 for detecting the workpiece 5 is arranged at the terminal end of the third conveyor 4b, that is, at the starting end of the vacuum conveyor 7.

A vacuum conveyor 7 is arranged above the terminal end of the third transport conveyor 4b on the lower side, and the vacuum conveyor 7 has a vacuum box 8 inside and is arranged so as to cover the intake hole of the vacuum box 8. It has an endless conveyor belt 9 arranged therein.

Countless ventilation holes 9a are formed in this conveyor belt 9,
The vacuum conveyor 7 conveys the workpiece 5 via the conveyor belt 9.
adsorbs. Further, the drive shaft of the vacuum conveyor 7 is provided with an encoder 7a for detecting the conveyance distance.

In the vacuum box 8 of the vacuum conveyor 7, continuous suction areas 10a and switching suction areas 10b are alternately partitioned by partition walls 11 along the conveying direction, and each constant suction area 10a and each switching suction area 10b are formed. (with suction duct)
12 are in communication via branch ducts 12a and 12b.

In addition, a suction device 13 is provided on one side of the suction duct eye 2, and each branch duct corresponding to each switching suction area lOb)
A damper device 12c is provided in the middle of 12b.

Switchable suction area 10b of vacuum conveyor 7
A take-out conveyor 14 is arranged below, and the take-out conveyor 14 is formed by a vacuum type conveyor. Further, an alignment conveyor 15 is disposed following the terminal end of the take-out conveyor 14, and a width roller I6 is provided along the conveyance direction in the middle of the alignment conveyor 15 in the track width direction, and the workpieces 5 are moved upward. The air that urges the air is ejected upward from the conveying surface. Furthermore, a chain conveyor 17 is disposed following the terminal end of the alignment conveyor 15, and a lifting table 18 that is movable up and down is disposed near the terminal end of the alignment conveyor 15 and located on the track of the chain conveyor 17. Cage, elevating table 18
A conveyance plate 13 made of a plywood board or the like is placed on. At the terminal end of the chain conveyor 17, a roller conveyor 20 intersects with the trajectory of the chain conveyor 17.
is installed, and a chain conveyor! A lift conveyor 21, which can move up and down and forms a conveyance track in the same direction as the roller conveyor 20, is disposed at the intersection of the roller conveyor 20 and the roller conveyor 20.

A control device 22 is provided connected to the workpiece detection sensor 6, encoder 7a, and each damper device 12c. The configuration of this control device 22 is shown in FIG. In FIG. 1, an opening/closing control circuit 31 that controls opening/closing of each damper device 12c controls the damper device 12c when simultaneously input from a damper selection circuit and a distance counter circuit, which will be described later.
It is formed of a plurality of AND circuits so as to instruct c to cut off the attraction force action.

The number counter circuit 32 is formed of a loop circuit so as to count the number of works 5 in response to a detection signal output from the work detection sensor 6. Further, the damper selection circuit 33 is formed of a shift register circuit so as to receive a sheet number count-up signal output from the sheet number counter circuit 32 and transmit a selection signal for the damper device 12c to the opening/closing control circuit 31. Further, the distance counter circuit 34 receives a pulse signal output from an encoder 7a provided on the vacuum conveyor 7, measures the transport distance of the workpiece 5, and instructs the opening/closing control circuit 31 to operate the damper devices 12c. It consists of multiple counter circuits.

The damper position setting circuit 35 receives the detection signal output from the workpiece detection sensor 6 and instructs the distance counter circuit 34 to start measurement, and also instructs the distance counter circuit 34 to select the damper device selected by the damper selection circuit 33. Set distance to switching suction area 10b corresponding to 12c! , to 13, it is composed of a shift register circuit, an AND circuit, and an OR circuit.

Hereinafter, the effects of the above configuration will be explained.

Thin plate-shaped works 5 are continuously arranged on the first transport conveyor 1, and pairs are arranged on both sides in the gauge direction. Then, the work 5 transported by the first transport conveyor 1 is transferred from the terminal end of the first transport conveyor 1 to the second transport conveyor 3 via the scrap damper 2. At this time, the quality of the work 5 is determined in the scrap damper 2, and defective products are dropped downward by opening the scrap damper 2. Also, when being transferred from the scrap damper 2 to the second conveyor 3,
The works 5 placed on both sides of the first conveyor 1 in the gauge direction are guided to the left and right second conveyors 3 and separated.

The workpiece 5 transported by the second transport conveyor 3 is
It is transferred from the terminal end of the second transport conveyor 3 to the third transport conveyor 4a on the upper side, and reaches the starting end side of the vacuum conveyor 7 via the third transport conveyor 4b on the lower side. At this time,
In the third conveyors 4a and 4b forming the introduction path, the conveyance speed of the third conveyor 4b on the lower side is set faster than the conveyance speed of the third conveyor 4a on the upper side, so that each workpiece 5 are spaced apart by an appropriate distance in the front and rear in the transport direction.

Then, each workpiece 5 is transferred to the vacuum conveyor 7 at the terminal end of the third conveyor 4b.

At this time, the vacuum conveyor 7 moves the workpiece through the conveyor belt 8 by suctioning the constant suction area 12a and the switching suction area 12b of the vacuum box 8 through the suction duct 12 and the branch ducts 12a, 12b. 5 is adsorbed, and the rotation of the conveyor belt 9 conveys the workpiece 5 in the direction of its trajectory. Moreover, since the workpiece 5 is in a semi-dry state, it is suctioned onto the conveyor belt 9 of the vacuum conveyor 7 sequentially from one end side, as shown in FIG. Further, at the end of the third conveyor 4b, the workpiece detection sensor 6 detects the workpiece 5, and the encoder 7a
Detection of the conveyance distance is started.

Then, the number counter circuit 32 receives the detection signal output from the workpiece detection sensor 6 and counts the number of workpieces 5. The damper selection circuit 33 also controls the damper device 12c (
A signal is sent to the opening/closing control circuit 31 to instruct the selection of the top position (located on the uppermost side in the transport direction). Further, in response to the detection signal output from the workpiece detection sensor 6, the damper position setting circuit 35 instructs the distance counter circuit 34 to set the distance 1 to the switching suction area 10b corresponding to the damper device 12C, and Instructs to start measuring the conveyance distance in step 5. This distance counter circuit 34 measurement is performed by counting pulse signals output from the encoder 7a of the vacuum conveyor 7.

Then, when the workpiece 5 reaches the switching suction area 10b, the distance counter circuit 34 instructs the opening/closing control circuit 31 to operate the damper device 12C, and the switching suction area 1 (l
The suction force to b is cut off, and the workpiece 5 is separated from the vacuum conveyor 7 and dropped below the switching suction area 10b.

Then, when the workpieces 5 are continuously dropped into the switching suction area 10b and the workpiece counter circuit 32 counts up a predetermined number of workpieces, the damper selection circuit 33 switches the damper device 12c to be operated by the opening/closing control circuit 31. At the same time, the damper position setting circuit 35 sends the distance counter circuit 34 to the newly selected damper al.
Set distance to the switching suction area 10b corresponding to FI2c (one position lower than the previous damper device 12c)! 2 is indicated. Then, by repeating the above operations,
A predetermined number of works 5 are dropped into each switching suction area 10b.

The work 5 dropped from the vacuum conveyor 7 onto the take-out conveyor 14 is transferred to the take-out conveyor 14 because the take-out conveyor 14 is a vacuum type conveyor.
4 and is reliably conveyed, and will not shift due to inertia. Furthermore, the workpieces 5 transferred from the terminal end of the take-out conveyor 14 to the alignment conveyor 15 are biased upward by the air jetted from the conveyance surface of the alignment conveyor 5, and are transferred in the track direction by the width rollers 16. , are aligned on one side of the alignment roller 15.

Then, the workpiece 5 is transferred from the end of the alignment roller 15 onto the conveyor brake 9 held by the lifting table 18.

At this time, the elevating table 18 descends by the thickness of one workpiece 5 every time it receives a workpiece 5, and when a predetermined number of workpieces 5 are stacked on the conveyor brake 9, the conveyor plate 19 is moved to the chain conveyor. The aircraft descends until it is transferred onto 17.

Then, the conveyance plate I9 on which a predetermined number of works 5 are stacked is conveyed by the chain conveyor 17, and lifted to the level of the roller conveyor 20 by the lift conveyor 21 at the intersection of the chain conveyor I7 and the roller conveyor 20. From roller conveyor 20
Translated above.

Effects of the Invention As described above, the workpiece separation control device of the present invention is capable of separating and collecting a predetermined number of soft workpieces that are continuously conveyed by a vacuum conveyor in each switching suction area.

[Brief explanation of drawings]

FIG. 1 is a circuit configuration diagram of a workpiece separation control device of the present invention, and FIG. 2 is an overall plan view of the workpiece separation device in the same embodiment.
3 is a side view taken along the line A-A in FIG. 2, and FIG. 4 is a side view taken along the line B-B in FIG. 2. 4a, 4b...Third conveyor, 5...Work, 7...Vacuum conveyor, 8...Vacuum box, 12
...Suction duct, 12C...Damper device, I3...
- Suction device, 22... Control device, 31... Opening/closing control circuit, 32... Number counter circuit, 33... Damper selection circuit, 34... Distance counter circuit, 35...
・Damper position setting circuit.

Claims (1)

[Claims] 1. Equipped with a vacuum conveyor that continuously conveys workpieces, and by operating a damper device corresponding to the switching suction area to cut off the suction force to the switching suction areas formed at multiple locations in the conveyance direction of the vacuum conveyor. In the workpiece separation device that drops the workpieces in the switching suction area, a detection signal output from an opening/closing control circuit that controls opening and closing of each damper device and a workpiece detection sensor installed at the starting end of the vacuum conveyor is used. A number counter circuit that counts the number of workpieces, a damper selection circuit that receives a number count-up signal output from the number counter circuit and instructs the opening/closing control circuit to select a damper device, and outputs from an encoder installed on the vacuum conveyor. A distance counter circuit receives a pulse signal from the workpiece to measure the transport distance of the workpiece and instructs the opening/closing control circuit to operate the damper device, and a distance counter circuit receives the detection signal output from the workpiece detection sensor to start measurement. A work separation control device comprising: a damper position setting circuit that instructs timing and also instructs a distance counter circuit to set a distance to a switching suction area corresponding to a damper device selected by a damper selection circuit.