JPS61178318A - Conveyer apparatus for spacing transported articles - Google Patents

Abstract

PURPOSE:To prevent damage of a work in the above apparatus for veneer by endlessly connecting a plurality of belts through elastic bodies with the end portions thereof overlapped, disposing the endless belt between transport and carry-out conveyers, and travelling the belt at the same speed as that of both conveyers. CONSTITUTION:An endless belt 5 comprises a plurality of belts 6, 6-1, 6-2 connected by elastic bodies 7, with the end portions thereof overlapped. A front rotor 3 is rotated at the same speed as that of a transport conveyer 1, and a rear rotor 4 is rotated at the same speed as that of a carry-out conveyer 2. In this arrangement, the endless belt 5 is forced to circulate by elongating the elastic body 7 to forward the belt and contracting the same to return the belt. On detecting 11 a transported article A, the front and rear rotors 3, 4 are driven by a driving mechanism 8 to receive the transported article A in the endless belt 5. Whereupon, with the travelling of the belt, the elastic bodies 7 between the respective belts 6... are sequentially elongated to space works. Thus, the work can be handled under no tension to prevent damage of the work.

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 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, Due to the inconvenience of continuous stacking of these fixed-sized raw boards or the inability to detect individual veneers with a detector, in the conventional method, the conveyor on the output side of the clipper is set at a higher speed than the conveyor on the input side. However, when the conveying direction is perpendicular to the fibers of the veneer and the veneer is thin or fragile, the tension due to the feed difference is used. There were inconveniences such as cracks and tears in the veneer caused by the force. Since this invention does not utilize a feed difference, it is possible to leave a gap without applying any tensile force to the conveyed object, and without causing any damage to the conveyed object.
It is something that can be implemented.

[Structure of the Invention] The present invention will be described with reference to an embodiment shown in the drawings.The conveyor 1 is composed of a suitable conveyor such as an endless belt or a roller, and the conveyor has a fixed size with equal length in the conveyance direction. Objects A, A-1, A- whose end surfaces are in contact with or close to each other
2. The carry-out conveyor 2 consists of a suitable conveyor such as an endless belt or rollers, and the carry-out conveyor 1
The unloading conveyor 2 is arranged at an appropriate interval so as not to be too close to the rear of the transport conveyor 1, and the unloading conveyor 2 is set to transport the objects 11 and the objects to be transported at a higher speed than the transport conveyor 1.

The front rotary wheel 3 is placed near the discharge end of the conveyor 1, and the rear rotary wheel 4 is located near the discharge end of the conveyor 2.
It is placed near the viewing end. An endless band 5 is stretched between the front rotary wheel 3 and the rear rotary wheel 4, and the objects A and A-1 are transported between the transport conveyor 1 and the discharge conveyor 2 by the endless belt 5.

This forms the transport path A-2. As shown in the figure, the endless belt 5 is made up of a plurality of belts 6 (three belts in this example) having circumferences slightly longer than the regular dimensions of the conveyed objects A, A-1, and A-2.
6-1 and 6-2 are formed so that their ends overlap each other, and the ends are connected by an elastic body 7 such as a stretchable rubber or a spring. Since the endless belt 5 is thus formed by the plurality of belts and the elastic body 7 that connects the belts, it can be run at a reasonable speed by the front rotary wheel 3 and the rear rotary wheel 4. That is, at the front rotary wheel 3, the belt runs by the driving force of the rotary wheel 3,
At the rear rotary wheel 4, the belt runs by the driving force of the rotary wheel 4, and even if each belt runs at different speeds, the speed difference is absorbed by the elastic body 7, so the endless belt 5
Each rotating wheel can run at different speeds. Depending on the rotating wheel 3 in the front position, the endless belt 5 runs at the same speed as the transport conveyor 1, and depending on the rotating wheel 4 in the rear position, the endless belt 5 runs at the same speed as the carry-out conveyor 2.
This means includes, for example, a drive structure 8 consisting of an intermittent drive means such as a motor, a clutch/brake, etc., and a relay means such as a chain wheel, a chain wheel, etc.
Appropriate drive such as rotationally driving the shafts 10 of the rotary wheels 3 and rear rotary wheels 4, or rotationally driving the front and rear rotary wheels 3 and 4 using the drive mechanism of the transport conveyor 1 or the unloading conveyor 2. It is done by a mechanism. A detector 11 provided at a portion of the conveyor 1 detects the front end of the first conveyed object conveyed by the conveyor 1 and transmits the signal to the drive mechanism 8.
The front and rear rotating wheels 3.4 are rotationally driven to start running the endless belt 5, and the endless belt 5 carries a series of continuous conveyed objects A, A-1, A-2, . Continue running until the end.

Note that each belt 6.6-1.6-2 of the endless belt 5 is set to have a slightly longer circumference than the standard size for the conveyed object, but this length depends on the degree of overlapping of the belt ends. Determined by the settings. Further, the number of belts may be an appropriate number of two or more, and the belt ends may be formed into a tapered shape or the thickness of the belt so that the overlapping portions run smoothly at each rotating wheel.

To explain the details of the implementation, FIG. 1 shows a state in which each belt of the endless belt 5 has stopped at a predetermined position. The driving mechanism 8 is controlled by a detection terminal attached to the belt 6.6-1.6-2 and its detector (not shown). In FIG. 2, when the front end of the first transported object A transported by the transport conveyor 1 activates the detector 11, the drive mechanism 8 is activated by the signal, which starts the front and rear rotary wheels 3, 4, and drives the endless belt. Run 5. In this case, the predetermined stop position of each belt of the endless belt 5 and the running start time of the endless belt 5 are such that the front end of the first conveyed object A is M, and the belt 6 to be conveyed is
The belt 6 is set so that its rear end near the front end of the belt 6 almost coincides with the end of the belt 6. FIG. 2 shows a state where the front end of the first conveyed object A has reached the upper part of the front rotary wheel 3 and the conveyed object A is just before being transferred from the conveyor 1 to the belt 6. A is transferred onto the belt 6, but since the belt 6 is running at the same speed as the transport conveyor 1 by the rotating wheel 3 at the front, no tensile force in the feeding direction is applied to the transported object A during the transfer. Figure 3 shows the first WI sent item A.
It moves forward on the belt 6 driven by the rotary wheel 3 at h < hη, and its rear end is on both sides of the front rotary wheel 3;
This shows a state immediately before the next conveyed object A-1, whose front end is in contact with or close to its rear end, is transferred to the next belt 6-1. The belt 6 moves forward further, and the belt 6 moves to the rotating wheel 4 at the rear.
When it reaches the position, it starts traveling at the same high speed as the delivery conveyor 2 due to its drive, and the next conveyed object A-1 transferred to the one-way belt 6-1 is moved at a low speed due to the drive of the preceding rotary wheel 3. ■ Since it travels at the speed of conveyor 1, endless belt 5
Due to this speed difference, on the conveyance path, the gap gradually increases between the rear end of the first conveyed object △ and the front end of the next conveyed object A-1, and as shown in FIG. When the rear end of A reaches above the rear rotary wheel 4, a desired distance is provided between it and the front end of the next conveyed object A-1. Even when the first conveyed object A is transferred from the belt 6 to the carry-out conveyor 2, the belt 6 is running at the same speed as the carry-out conveyor 2, so no tensile force in the feeding direction acts on the carried object A at all. In addition, FIG. 4 shows that the conveyed object, 2 following the conveyed object l1l-1, has already been transferred to the third belt 6-2, and a part of the belt 6-1 is in the position of the rear rotary wheel 4. At this point, the belt 6-1 shifts to high-speed running, and a slight distance is left between the conveyed objects A-'1 and A-2.

Note that when the endless belt 5 travels on the outward path (the conveyance path connecting the WI conveyor 1 and the output conveyor 2), the overlap between the belts gradually decreases due to the speed difference between the leading high-speed belt and the following low-speed belt. On the return path (the lower running path of the endless belt 5), on the contrary, the leading belt runs at a low speed, so the overlap gradually increases, and the distance and speed difference between the outward and return paths do not change, and the change in overlap is caused by the elastic body 7. Therefore, when the overlapping part of the belt reaches the position of the front rotary wheel 3, the degree of overlap remains almost constant, and the degree of overlap at the front rotary wheel 3 and the length of the belt With this setting, the preceding conveyed object and the next conveyed object are completely separated above the forward rotary wheel 3 and are securely placed on different belts. The desired spacing between the conveyed objects is achieved, and no tensile force in the feeding direction is applied to the conveyed objects when this spacing is provided.

〔Effect of the invention〕

As described above, the present invention has an endless belt that connects a conveyor and a discharge conveyor at a higher speed than the conveyor by connecting belts with a plurality of circumferential lengths with an elastic body. Since the structure is configured to run at the same speed, the entire tensile force in the feeding direction is not applied to the transported object when the transported object is transferred from the transport conveyor to the M@ band and from the endless belt to the discharge conveyor, respectively. In addition, the belts forming the endless belt are set to be somewhat longer than the objects to be transported, and the ends of each belt are connected by elastic bodies, and overlapping parts are provided at the ends of the belts so that one object to be transported is attached to each belt. Since the structure is configured to give a speed difference between the preceding belt i and the next belt in the loading and conveying path, the desired interval is reliably provided between the objects to be conveyed in the endless belt conveying path, and when creating the interval. This method does not apply any tensile force in the feeding direction to the transported object, and even if the transported object is thin and fragile, it can be sent to the next process with a certain distance without causing any damage. be.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view, and FIGS. 2 to 4 are explanatory diagrams showing the outline of the implementation.

Claims (1)

[Claims] A carry-out conveyor that is faster than the carry conveyor is provided at an appropriate interval behind a conveyor that conveys a fixed-size object whose front and rear end surfaces are in contact with or are close to each other; A rear rotary wheel is provided near the input end of the carry-out conveyor, and a plurality of belts having a circumference slightly longer than the standard size of the conveyed object are attached to the front and rear rotary wheels at each end. An endless belt formed by connecting the ends near the ends with elastic bodies is stretched over the ends so that the ends overlap, and the endless belt forms a conveyance path between the transport conveyor and the discharge conveyor, and the endless belt connects the transport conveyor and the discharge conveyor. A conveyor device for providing distance between objects to be conveyed, comprising a drive mechanism that rotationally drives the front and rear rotary wheels so as to travel at the same speed as the conveyor.