JPS61206719A - Conveying apparatus for spacing transported articles - Google Patents

Abstract

PURPOSE:To provide a conveying apparatus suitable for spacing transported articles having a low degree of tolerance to tensile force in the feed direction by spacing transported articles of a fixed length which are transported with little space before and behind the article, and feeding same to the next process. CONSTITUTION:In succession of a transport conveyer 1, a thick-and-thin convey er 5, and a conveyer 10 in which speed is changed at the start end are disposed side by side. The length of an endless belt of the conveyer 5 is set equal to the fixed length L of transported articles A, A-1, and the effective length of the thick portion 5a of the conveyer 5 is set half the fixed length or a little shorter than that. A middle track of the conveyer 10 is disposed between the higher track of the thick portion 5a and the lower track of the thin portion 5b. Plural sets of speed change conveyers 12, 13 which can be switched to fixed speed and high speed are disposed between the fixed speed running conveyer 1 and a high speed running carry-out conveyer 5 running a little faster than the conveyer 1. Transport paths of the speed change conveyers 12, 13 are set in such a manner as to correspond the speed ratio of high speed to fixed speed so that every transfer between the respective conveyers is performed at the same speed.

Description

[Detailed Description of the Invention] [Object of the Invention] The present invention provides a conveyor device that is capable of imparting intervals to objects of a fixed size that are conveyed with almost no gaps between the front and back and sending them to the next process. The purpose of the present invention is to provide a conveyor device which is particularly suitable for providing spacing between conveyed objects that are vulnerable to tensile force in the feeding direction, such as veneer veneers that are conveyed in a direction perpendicular to the fibers. The continuous band-shaped veneer cut by veneer lace is continuously cut by a clipper, but the veneer cut to a fixed length is sent out with almost no gap between the front and rear end faces, and if there is no gap, Because of these disadvantages such as the continuous accumulation of veneers or the inability to detect individual veneers with a detector, the conventional method sets the conveyor on the output side of the clipper to a higher speed than the conveyor on the input side. Immediately after cutting, a method is used to create space between the front and rear veneers, but the conveyance direction is perpendicular to the fibers, and if the veneer is thin or brittle, the difference in feed will cause the part that spans both conveyors to There were inconveniences such as tensile force acting on the veneer and causing cracks and tears. This invention can be implemented by making use of the feed difference to create a gap without applying any tensile force to the conveyed objects, and without causing any damage to the conveyed objects.

(Structure of the Invention) To explain the present invention with reference to an embodiment shown in the drawings, a conveyor 1 is composed of a suitable conveyor such as an endless belt, and is driven by a drive mechanism 2 such as a motor to a fixed size having equal length in the conveyance direction. The conveyed objects A, A-1, and A-2, such as veneer veneers, whose front and rear end surfaces are in contact with or are close to each other, are moved at a predetermined constant speed V (if connected to a veneer lace line, etc., the same as that line). It is conveyed at a constant speed). The carry-out conveyor 3 consists of a conveyor such as an endless belt, and is arranged behind the conveyor 1 with an interval equal to or larger than the standard size of the objects to be conveyed, and the drive mechanism 4 such as a motor drives the conveyor 1 at a constant speed. It is caused to travel at a predetermined high speed (a), which is somewhat faster than V, and this predetermined high speed Va is appropriately set depending on the size of the interval given to the objects A, A-1, and A-2.

The thick and thin conveyor 5 has a front rotary wheel 6 and a rear rotary wheel 6a.
An endless belt having a thick part 5a and a thin part 5b stretched over the conveyor belt 1 is used to convey clothes to the conveyor 1.
-1 and A-2, the endless belt is set to a length approximately equal to the standard size of the transported object, and its axis is determined by the diameters of the front and rear rotary wheels 6, 6a, etc. The thick and thin conveyor 5 forms a conveyance path with a reference distance corresponding to the distance between part 5
The thickness of b is set to form a lower running path Y-Y, and the thick portion 5a is set to have an effective length that is approximately 1/2 of the standard size or slightly shorter than that,
The transport conveyor 1 is caused to travel at approximately the same speed as the transport conveyor 1 by a drive mechanism 7 consisting of a motor, a clutch/brake, etc. The detector 8 placed on the conveyor 1 detects the front end of a series of objects to be conveyed in a continuous manner, transmits the signal to the drive mechanism 7, starts the thick and thin conveyor 5, and starts the rotation of the front part. A detector 9 installed below the car 6 detects a detection terminal attached to an endless belt or the like when a series of conveyed objects has been spaced, and transmits the signal to the drive mechanism 7 to move the thick and thin conveyor 5 to a predetermined position. In the first stage, these detectors 8.9 move the thick and thin conveyor 5 so that the front end of the series of objects to be conveyed and the front end of the thick portion 5a of the endless belt coincide at the loading end of the thick and thin conveyor 5. This is used to start and stop 5.

The starting end variable speed conveyor 10 is arranged in parallel with the thick/thin conveyor 5 so as to form a conveyance path following the conveyor 1, and the front end of the conveyance path coincides with the front end of the thick/thin conveyor 5, and the rear end coincides with the rear end of the thick/thin conveyor 5. The thick and thin conveyor 5
It is provided so as to form an intermediate running route Z-Z (FIG. 3) between the upper and lower running routes XX and Y-Y (7). Further, the starting end variable speed conveyor 10 is provided so that it can be switched between a constant speed (2) and a high speed Va by a drive mechanism 11 consisting of a motor, a clutch, a transmission, etc.

The intermediate variable speed conveyor 12 and the intermediate variable speed conveyor 13 are sequentially provided between the starting end variable speed conveyor 10 and the delivery conveyor 3, and are used to convey objects A-1 and A-2 from the starting end variable speed conveyor 10 to the delivery conveyor 3. In addition to forming a conveyance path, the conveyance path of the intermediate speed change conveyor 12 has a proportional setting distance Db (Db - Da - R) obtained by multiplying the proportional reference distance [)a of the start end change speed conveyor 10 by the speed ratio R.
The conveyance path of the intermediate speed conveyor 13 is the intermediate speed conveyor 12.
The proportional setting distance D is obtained by multiplying the proportional setting distance Db by the speed ratio R.
c (Dc −Db −R),
The conveyance path from the starting end variable speed conveyor 10 to the discharge conveyor 3 is formed so as to increase successively by a distance commensurate with the speed ratio R. And these intermediate speed change conveyors 12.
Similarly to the start end variable speed conveyor 10, the conveyor 13 is also provided so that it can be switched between a constant speed V and a high speed Va by drive mechanisms 14 and 15 each consisting of a motor, a clutch, a transmission, etc. Note that these drive mechanisms 14, 1
5 and the drive mechanism 11 of the start-end variable speed conveyor 10 can be similarly implemented with a configuration in which the drive mechanism 2 of the transport conveyor 1 and the drive mechanism 4 of the discharge conveyor 3 are used as drive sources, and each is equipped with a switching mechanism such as a clutch. , and these intermediate speed conveyors have a fixed size L1 speed ratio R1 of the conveyed object.
One set or multiple sets are provided as appropriate depending on the desired spacing between the objects to be conveyed, and furthermore, the position of the rear end of the intermediate variable speed conveyor 13 connected to the carry-out conveyor 3 and the front end of the carry-out conveyor 3 is the starting end. The same implementation can be achieved by setting the proportional reference distance, proportional setting distance, number of sets, etc. of each variable speed conveyor so as to coincide with a position separated by a fixed length from the front end of the variable speed conveyor 10.

The high-speed conversion detector 16 is installed at a fixed distance from point P, which is the front end position of the thick/thin conveyor 5 and the start end variable speed conveyor 10, and detects the front ends of the conveyed objects A, A-1, and A-2. The signal is transmitted to each drive mechanism 11, 14.15 to control the start end variable speed conveyor 10, intermediate variable speed conveyor 12, and intermediate variable speed conveyor 13 to switch from constant speed V traveling to high speed Va constant traveling all at once. The conversion detector 11 is installed to match the position Pb of the rear end of the start end variable speed conveyor 10, detects the rear end of the conveyed object, transmits the signal to the drive mechanism 11, and moves the start end variable speed conveyor 10 at high speed ■a The constant speed conversion detection B18 is installed to match the position PCa of the rear end of the intermediate speed conveyor 12, detects the rear end of the conveyed object, and sends the signal to the drive mechanism 14. The intermediate speed change conveyor 12 is controlled to switch from high speed va to constant speed V, and the constant speed conversion detector 19 is installed at the rear end of the intermediate speed conveyor 13 in accordance with MPdI:a, and the The device detects the rear end and transmits the signal to the drive mechanism 15 to control the intermediate speed conveyor 13 to switch from high speed (a) to constant speed (V). When the front end of the most forward conveyed object A reaches the position of the detector 8, the thick and thin conveyor 5 is started by the signal.
Its front end is the thick part 5a of the thick and thin conveyor 5 at point P.
The conveyed object A is transferred from the conveyor 1 to the thick and thin conveyor 5 almost in alignment with the front end of the conveyor 1. In this case, conveyor 1
Since the conveyor 5 and the conveyor 5 run at substantially the same speed, the transfer is carried out smoothly without applying any tensile force to the transferred object A. The conveyed object A transferred to the thick/thin conveyor 5 is sequentially transferred to the start end conversion conveyor 10, the intermediate speed change conveyor 12, and the intermediate speed change conveyor 13, which are running at a constant speed (■), and the front end thereof is the position of the high speed conversion detector 16. is transported until it reaches . The transfer from the thick/thin conveyor 5 to the start-end variable speed conveyor 10 and the transfer between the variable speed conveyors is also carried out smoothly without applying any tensile force to the conveyed object A. The length of the endless belt of the thick/thin conveyor 5 is approximately equal to the standard size, and the thick portion 5a is set to be equal to or slightly shorter than the standard size.
-Z is set above the running path Y-Y of the thin portion 5b, so the conveyed object A located in the area of the thick and thin conveyor 5
The rear end portion is placed on the start end variable speed conveyor 10. (Fig. 4) When the front end of the conveyed object A is detected by the high-speed conversion detector 16, the starting end variable speed conveyor 10° and intermediate variable speed conveyor 12.
The constant travel mode is switched and the conveyed object A is conveyed at high speed va. On the other hand, the next conveyed object A-1 is transferred from the conveyor 1 to the thick section 5a of the thick/thin conveyor 5, and
Since the upper running path x-x is set higher than the middle running path Z-Z of the starting end variable speed conveyor 1o, the conveyed object A-
1 is transported at a constant speed V regardless of the traveling of the transported object A at the high speed va, and a speed difference can be provided between the two without any trouble. Since a proportional reference path @Da is set between the rear end position Pa of the thick and thin conveyor 5 and the rear end position Pb of the start end variable speed conveyor 10, the speed difference between the When the rear end of A reaches point Pb, the front end of the next conveyed object A-1 reaches point pa, and both have [
)a is given, and the front end of the conveyed object A has already been transferred from the intermediate variable speed conveyor 13 to the discharge conveyor 3. (Fig. 5) When the rear end of the transported object A reaches point pb, the constant speed conversion detector 1
7 detects this and operates the drive mechanism 11, and the starting end variable speed conveyor 10 is switched from high speed ■a to constant speed V,
When the conveyed object A-1 is transferred from the thick/thin conveyor 5 to the start end variable speed conveyor 10, there is no speed difference and the transfer is performed smoothly, and the transferred object A-1 from the intermediate speed conveyor 13 to the discharge conveyor 3 is also transferred at the high speed of both conveyors. This is done smoothly by running the va.

When the front end of the conveyed object A-1 reaches the rear end position Pb of the start end variable speed conveyor 10, the rear end of the conveyed object A-1 reaches the rear end of the intermediate speed variable conveyor 12 due to the speed difference and the setting of the proportional setting distance Db. reaches the position Pc, and a spacing of ob is given to both of them. (Fig. 6) When the rear end of the conveyed object A reaches the pc point, the constant speed conversion detector 18 detects this and the drive mechanism 1
4, the intermediate speed conveyor 12 changes from high speed Va to constant speed V.
When the conveyed object A-1 is transferred from the starting end variable speed conveyor 10 to the intermediate variable speed conveyor 12, the conveyed object A-1 is transferred smoothly without any speed difference.

When the front end of the transported object Ad reaches the MPC point at the rear end of the intermediate speed conveyor 12, the rear end of the transported object A reaches the rear end of the intermediate speed conveyor 13 due to the speed difference and the setting of the proportional setting distance DC. IPd is reached, and an interval of Dc is provided between the two. (Fig. 7) When the rear end of the conveyed object A reaches point Pd, the constant speed conversion detector 19 detects this and operates the drive mechanism 15, and the intermediate speed conveyor 13 changes from high speed Va to constant speed V. When the conveyed object A-1 is transferred from the intermediate speed conveyor 12 to the intermediate speed change conveyor 13, the transfer is performed smoothly without any speed difference.

When the front end of the conveyed object Ad reaches the position of the high speed conversion detector 16 provided on the intermediate speed change conveyor 13, the detection signal causes the start end speed change conveyor 10 and the intermediate speed change conveyor 12 to be moved.
．． 13 is switched to high-speed Va constant running, but a desired distance S is provided between the conveyed object A whose rear end has already reached the top of the carry-out conveyor 3, and the conveyed object following the conveyed object A-1 is The front end of the transported object A-2 has reached point P. (Fig. 8) In this way, after the conveyed object A reaches point P, the open conveyed object A is conveyed to the discharge conveyor 3 and runs smoothly without any tensile force acting on it due to the speed difference and the transfer. At the same time, it is possible to reliably provide the desired distance S to the next transported object A-1. When the processing of a series of objects to be transported is completed, the thick and thin conveyor 5 is stopped at a predetermined position by the action of the detector 9 to prepare for processing the next series of objects to be transported.

In addition, in the case of a configuration in which the rear end of the starting end variable speed conveyor 10 is made to coincide with the rear end of the thick and thin conveyor 5, the same implementation can be performed by locating the first intermediate variable speed conveyor at the position of the proportional reference distance Da, and high speed conversion detection can be performed. Set the installation position of the device 16 to Pd.
When the point coincides with the point, the proportional setting distance of the last intermediate speed change conveyor becomes the desired interval S. Unloading conveyor 3 in the figure
The conveyor 20 that follows runs at the same speed as the discharge conveyor 3,
This conveys the objects to be conveyed at intervals to a depositing place or the like.

〔Effect of the invention〕

As described above, in the present invention, a thick/thin conveyor and a start end variable speed conveyor are installed next to a conveyor, the length of the endless belt of the thick/thin conveyor is set equal to the regular size of the conveyed object, and the thick part of the thick/thin conveyor is The effective length of the conveyor is set to + or slightly shorter than the standard size, and the middle running track of the start end variable speed conveyor is provided between the upper running track of the thick part of the thick and thin conveyor and the lower running track of the thin part. Therefore, even if the front and rear end surfaces are in contact with or are close to each other, it is possible to run them at different speeds and provide a distance between them without any problems, and it is possible to create a conveyor that runs at a constant speed and an output conveyor that runs at a slightly faster speed. There are multiple sets of variable speed conveyors that can be switched between constant speed and high speed, and the conveyance paths of these variable speed conveyors are set to match the speed ratio between high speed and constant speed, so that all transfers between each conveyor can be performed. Because the structure is configured to perform the transfer at the same speed, there is no need to apply any tensile force in the feeding direction to the conveyed objects when transferring between each conveyor, and even objects that are weak in tensile force in the feeding direction can always be smoothly provided with the desired spacing. It has a powerful effect.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a detailed side view of a portion of FIG. 1, and FIGS. FIG. 8 is an explanatory diagram showing the outline of implementation. 1... Conveyance conveyor 3... Unloading conveyor 5.
・Thick and thin conveyor 5a...Thick part 5b...
Thin part 10... Starting end variable speed conveyor 12.
13... Intermediate speed change conveyor 16... High speed conversion detector 17.18.19... Constant speed conversion detector A, A-1,
A-2...Object to be transported D...Reference distance [)a...
Proportional reference distance [)b, [)c... Proportional setting distance... Standard size S... Desired interval ■...
Constant speed Va: High speed X-X: Upper course Y-Y: Lower course Z-7: Middle course

Claims (1)

[Claims] A constant-speed transport conveyor that transports a fixed-sized object whose front and rear end surfaces are in contact with or are close to each other is provided with an interval larger than the standard size of the transported object at the rear of the conveyor, and It is equipped with an unloading conveyor that runs at a high speed ratio, and has a length that is approximately the same as the standard size of the conveyed object and approximately 1 part of the standard size.
It is an endless belt having an effective length of /2 or a little shorter than this and has a thick part forming an upper running track and a thin part forming a lower running track, and runs at approximately the same speed as the transport conveyor and continues to the transport conveyor. A thick/thin conveyor forming a conveyance path of a reference distance is provided, and a middle running path is formed between the upper and lower running paths of the thick/thin conveyor, and its front end coincides with the front end of the thick/thin conveyor, and its rear end is the rear end of the thick/thin conveyor. , or from the rear end to a rear position separated by a proportional reference distance commensurate with the reference distance and the speed ratio; A conveyor is provided, and a conveyance path having a proportional setting distance, which is the proportional reference distance multiplied by the speed ratio, is formed between the start end variable speed conveyor and the discharge conveyor, and the conveyance conveyor is switched between a constant speed and a discharge conveyor is run at a high speed. a high-speed conversion detector which is equipped with one or more sets of intermediate variable-speed conveyors, and which detects the front end of the conveyed object and controls the start-end variable-speed conveyor and the intermediate variable-speed conveyor to switch from constant-speed running to high-speed running all at once; A conveyor for spacing objects to be conveyed, characterized in that it is equipped with a constant speed conversion detector that detects the rear end of the object to be conveyed and controls the start end variable speed conveyor and the intermediate variable speed conveyor to switch from high speed running to constant speed running, respectively. Device.