JPS61287643A - Conveyor device for giving interval of specified length veneer - Google Patents

Abstract

PURPOSE:To set a conveying interval without entailing any damage to a veneer, by conveying a front edge of the veneer in a way of sticking and hanglingly holding it till a preceding specified length veneer runs at high speed by each speed change conveyor, reaching its rear end to the specified position, and these speed change conveyors are selected to constant-speed travel. CONSTITUTION:At the first stage, speed change conveyors 17, 19 and 20 at a starting end and both first and second intermediate parts travel at a constant speed V, and when a front end of the forefront one of a series of specified length veneers is detected by a detector 13, a sticking conveyor 5 starts its operation and, after a front end of each veneer A and a sticking body Na at the starting end of a sticking body group 11 are almost coincedently stuck at a terminal position P of a constant-speed conveyor 1, these veneers A is stuck by the sticking body group 11 in consecutive order, and the stuck part proceeds along slinging conveying passage X-X, separated at a position of a separating body 16, then transferred onto the conveyor 17 without giving tensile force. Further the veneer A proceeds and when the front end is detected by a detector 24, these conveyors 17, 19 and 20 are selected to a high speed Va so that an interval is set between the veneer A and the succeeding veneer A.

Description

[Detailed Description of the Invention] [Object of the Invention] The present invention is directed to a veneer lace cutter that is continuously cut to a fixed length by a veneer lace, cut to a fixed length by a clipper, and transported with almost no gap between the front and rear end faces. This relates to a spacing conveyor device that imparts spacing to shaku veneer plates and sends them to the next process.

If there is no space between the veneers, there are problems such as continuous accumulation of these veneers or the inability to detect individual veneers with a detector, so in the conventional method, the conveyor on the output side of the clipper is moved to the input side. The method used is to set the speed of the veneer at a higher speed than that of a conveyor to leave space between the front and back veneers immediately after cutting, but the conveyance direction is perpendicular to the fibers of the veneer, and if the veneer is thin or the raw wood is In the case of a veneer that is cut from the core and has a fragile material or is prone to cracking, the tensile force acting on the part spanning both conveyors due to this feed difference may cause the veneer to tear or increase the number of cracks. was there. This invention makes it possible to provide a desired spacing between veneers without applying any tensile force while utilizing the feed difference of the conveyor, and there is no problem even if the veneers are thin, brittle, or prone to cracking. It is something that can be implemented.

[Structure of the invention]

To explain this invention with reference to an embodiment shown in the drawings, a constant speed conveyor 1 is connected to a veneer lace line or the like, runs at a constant speed by a drive mechanism 2 such as a motor, and has a fixed size with equal length in the conveying direction. The fixed-length veneers A, A-1, and A-2, whose front and rear end surfaces are in contact with or close to each other, are conveyed in a direction perpendicular to the fibers thereof.

The high-speed conveyor 3 consists of a conveyor such as an endless belt, and is arranged behind the constant-speed conveyor 1 with an interval equal to or larger than the standard size of the standard-sized veneer. A predetermined speed ratio R (for example, 1:
1, 2) Travel at high speed ■a to produce fixed length veneers A, A-1, A
The predetermined speed ratio R- of this wind is appropriately set depending on the size of the interval provided between the regular length veneers.

The pricking conveyor 5 has a front rotary wheel 7 attached to a shaft 6 and a rear rotary wheel 9 fixed to the shaft 8. 2) endless belts 10 are stretched, and on the surface of each endless belt 10, a needle-shaped body N or the like is inserted into a predetermined length range, that is, a shaft of approximately + or shorter than the standard size. They are partially attached in the same phase as a group of sticks 11 over a range corresponding to the reference distance between the shafts 6 and 8, and run on the endless belt 10 by a drive mechanism 12 such as a motor that rotationally drives the shaft 8. The axis of the shaft 6, which is located above the constant speed conveyor 1 and points at its end point P, is approximately aligned with the point P), extends rearward from the vicinity of the end point P, and runs below the endless belt 10.
A suspension conveyance path X- with approximately a standard distance, in which fixed-length veneers A, A-1, and A-2 are stuck by a group of sticks 11 and conveyed in the same direction and at the same speed as the constant-speed conveyor 1. x. The reference path flD is determined by the diameters of the front and rear rotating wheels 7 and 9, and the detector 13 installed on the constant speed conveyor 1 detects the front end of a series of fixed-length veneers that are continuously conveyed. The detection signal is transmitted to the drive mechanism 12 to start the stabbing conveyor 5, and the detector 14 installed above the rotating wheel 7 at the front rotates the endless band when the spacing between the series of fixed-length veneers is finished. 1
The detectors 13 and 14 detect the detection terminal attached to the 0 etc. and transmit the signal to the driving vJ mechanism 12 to stop the pricking conveyor 5 at a predetermined position. The pricking conveyor 5 is started and stopped so that the front end of the shaku veneer and the pricking body Na at the starting end of the pricking body group 11 almost coincide with each other near the end of the constant speed conveyor 1. The pressurizing mechanism 15 pushes down the front rotary wheel 7 to ensure that the sticking body group 11 is stuck to the fixed length veneer, and also moves the rotary wheel 7 up and down as necessary. The detachment body 16, which is provided below the rotary wheel 9 at a distance of approximately a reference distance from the point P, crosses the suspended conveyance path x-X using a bar-shaped body or a rotary body as in the embodiment, and is attached to the sticking conveyor. The fixed-length veneer is separated from the group of arrival bodies 11 near the end position pa of point 5.

The starting end variable speed conveyor 17 is composed of a conveying body such as an endless belt, and forms a downward conveying path following the constant speed conveyor 1 and separated from the suspended conveying path x-X of the pricking conveyor 5 by an appropriate distance. The conveyance path is the reference path 11t of the pricking conveyor 5.
Proportional reference road 1 with length equal to D or reference distance and high speed ■ commensurate with the speed ratio R of a and constant speed V! It is formed to have a length equal to lDa (distance that satisfies R). The embodiment is the latter, and the end position p of the start end variable speed conveyor 17 is
Point b is located at a distance of [)+[)a from point P. The starting end variable speed conveyor 17 is operated at a constant speed V and a high speed Va by a drive mechanism 18 consisting of a motor, a clutch, a transmission, etc.
The configuration is such that the vehicle can be switched to a speed of

The two sets of first intermediate speed change conveyor 19 and second intermediate speed change conveyor 20 each consist of a conveyor such as an endless belt,
They are sequentially provided between the start end variable speed conveyor 17 and the high speed conveyor 3 to form a conveyance path for the fixed length veneers A, A-1, A-2 from the start end variable speed conveyor 17 to the high speed conveyor 3. The conveyance path of the variable speed conveyor 19 is a proportional setting distance Db (
The conveyance path of the second intermediate speed change conveyor 20 has a proportional setting distance Dc (Db = Da − R), and the conveyance path of the second intermediate speed conveyor 20 has a proportional setting distance Dc (
Dc -Db -R), and the end thereof is set to point Pd, and these intermediate speed change conveyors 19
．． 20 is also configured to be able to travel by switching between a constant speed V and a high speed Va by drive mechanisms 21 and 22 each consisting of a motor, a clutch, a transmission, etc. Note that these drive mechanisms 21 and 22 and the drive mechanism 18 of the start end variable speed conveyor 17 use the drive mechanism 2 of the constant speed conveyor 1 and/or the drive mechanism 4 of the high speed conveyor 3 as drive sources, and each has a switching mechanism such as a clutch. In addition, these intermediate variable speed conveyors have a fixed size of fixed length veneers, and one set or a plurality of sets may be suitably provided depending on the desired spacing between the fixed length veneers with a speed ratio R1. If the starting end variable speed conveyor 17 is set at the reference distance, a separate conveyor may be provided at the proportional reference distance Da and this can be similarly implemented as the foremost intermediate variable speed conveyor. The proportional reference distance of each variable speed conveyor is set so that the end position of the rearmost intermediate variable speed conveyor connected to the high speed conveyor 3 coincides with a position separated by a fixed length from the end position P of the constant speed conveyor 1. It can be implemented in the same way by setting the proportional setting distance, the number of sets, etc.

The high speed conversion control mechanism 23 is located at the end position P of the constant speed conveyor 1.
A fixed-length veneer A placed at a position separated by a fixed-length dimension from a point,
A detector 24 detects the front end of A-1, A-2 and its signal is transmitted to each drive mechanism 18, 21, 22 to start end variable speed conveyor 17. It is composed of a control circuit 25 and the like that causes the first and second intermediate speed change conveyors 19 and 20 to switch from constant speed V to high speed ■a at the same time, and constant speed conversion control mechanism 2
6 is the starting end variable speed conveyor 17. Positions of the respective ends of the first and second intermediate speed conveyors 19.20 p b, p
Detectors 27, 28 and 29 are placed in line with the three points c and PF to detect the rear ends of the fixed-length veneers, respectively, and the respective signals are transmitted to the respective drive mechanisms 18, 21 and 22, and the starting end shift is performed. The conveyor 11 is composed of a control circuit 30 and the like for switching the first and second intermediate speed change conveyors 19 and 20 from high speed Va to constant speed V, respectively. Note that the conveyor 31 following the high-speed conveyor 3 runs at the same speed as the high-speed conveyor 3, and sends out fixed-length veneers with intervals to the next depositing site or the like.

To explain the implementation procedure, in FIG. 1, at the first stage of a series of fixed-length veneers,
．． The first and second intermediate speed change conveyors 19.20 are constant speed V
When the front end of the regular length veneer A at the forefront of a series of regular length veneers is detected by the detector 13, the signal is transmitted to the drive mechanism 12 via or without a timer to cause the stick to stick. The conveyor 5 is started, and at point P at the end of the constant speed conveyor 1, the front end of the fixed-length veneer A and the pricking body Na at the starting end of the pricking body group 11 are stuck almost in agreement, and then the fixed-length veneer A is stuck in a fixed length one after another. The veneer A is stuck by the stick body group 11, and the part stuck to the stick body group 11 advances along the suspension conveyance path
It is detached at the position and transferred to the start end variable speed conveyor 17, and the portion that is not stuck is transferred from the end of the constant speed conveyor 1 to the start end variable speed conveyor 17.

In this case, since the sticking conveyor 5, constant speed conveyor 1, and start end variable speed conveyor 17 are all running at a constant speed V, these transfers can be carried out smoothly without applying any tensile force in the feeding direction to the fixed length veneer. It will be done.

The fixed length veneer A transferred to the starting end variable speed conveyor 17 is transferred to the second intermediate variable speed conveyor 19 running at a constant speed V.
When the front end reaches the position of the detector 24 after these transfers are carried out smoothly, the rear end advances to a position where it almost coincides with the end of the start end speed change conveyor 17. ing. (FIG. 4) When the detector 24 detects the front end of the fixed length veneer A, the signal is transmitted to each drive mechanism 1g, 21.22 via the control circuit 25, and the start end variable speed conveyor 17. The first and second intermediate speed conveyors 19 and 20 are simultaneously switched from constant speed (2) to high speed Va, and the fixed length veneer A is conveyed at high speed Va. Since the fixed length veneer A is on these conveyors at the time of this speed change, no tensile force is applied to the fixed length veneer A. On the other hand, at the front end of the next fixed-length veneer A-1 whose end surface is in contact with or close to the fixed-length veneer A-1, the group of stuck objects 11 that has rotated again
The fixed length veneer A-1 is pierced by the pierced body Na at the starting end of
is stuck by the sticking conveyor 5 in the same way as the fixed length veneer A, and is suspended and conveyed at a constant speed. The tattoo conveyor 5 forms a suspended conveyance path XX at a reference distance from the end point P of the constant speed conveyor 1, and between the suspended conveyance path XX and the conveyance surface of the start end variable speed conveyor 17. are spaced apart, tattoo body group 1
1 is attached within the + or reference distance range of the standard length dimension, so that the standard length veneer A can run at high speed Va without any problem, and the position from the point P of the start end variable speed conveyor 17 to its end position can be adjusted. Since the distance to point pb (D+Da) and the reference distance from point P of tattoo conveyor 5 to point pa at its end are set to match the speed ratio R, standard length veneer A
When the front end of -1 reaches point pa, the rear end of the preceding regular length veneer A reaches point Pb, and a proportional reference distance [)a is provided between them. (Fig. 5) End position 1 of the start end variable speed conveyor 17! When the detector 27 installed at point Pb detects the rear end of the fixed length veneer A, the signal is transmitted to the drive mechanism 18 via the control circuit 30, and the start end variable speed conveyor 17 moves at high speed ■a
Then, the running is switched to constant speed ■, and at this time, the front end of the next fixed length veneer A-1 reaches the position of the detachment body 16, detaches from the stabbing conveyor 5, and transfers onto the start end variable speed conveyor 17. However, the portion of the fixed length veneer A-1 that is not pasted on the tattoo conveyor 5 is transferred from the fixed length conveyor 1 to the starting end variable speed conveyor 17 and runs at a constant speed V, and from point Pb to the first intermediate variable speed conveyor 19. Proportional setting side l1IDb to end position pc point
and the proportional reference distance between points Pa and Pb where separation is performed [)
Since a is set to match the speed ratio R, when the front end of the standard length veneer A-1 reaches point Pb, the rear end of the preceding standard length veneer A reaches point Pc, and both An interval of a proportional setting distance Db is provided.

(Fig. 6) When the rear end of the preceding fixed-length veneer A reaches point Pc and the detector 28 is activated, the signal is sent to the drive mechanism 2 via the control circuit 30.
1, and the first intermediate speed change conveyor 19 is conveyed to the high speed Va
Then, the running is switched to constant speed ■, and the fixed length veneer A-1 is smoothly transferred to the first intermediate variable speed conveyor 19. Then, the proportional setting distance DC from the point pc where the fixed length veneer travels at high speed Va to the end position Pd of the second intermediate speed change conveyor 20
Since the proportional setting distance Db between the point pb and the point Pc where the fixed length veneer A-1 travels at a constant speed V is set to match the speed ratio R, the front end of the fixed length veneer A-1 is set at pc. When the point is reached, the rear end of the preceding fixed-length veneer A reaches the point Pd, and a proportional setting distance [)C is provided between them. (FIG. 7) When the rear end of the preceding fixed-length veneer A reaches point Pd and the detector 29 is activated, the signal is transmitted to the drive mechanism 22 via the control circuit 30, and the second intermediate speed conveyor 20 is switched from high speed Va to constant speed ■, and the fixed length veneer A-1 smoothly moves to the second
transfer to the intermediate speed conveyor 20. Standard length veneer A
-1 is traveling at a constant speed V, and its front end is detected by detector 2 from point pc.
When reaching position 4, the rear end of the fixed-length veneer A-1 reaches the position shown in FIG. Then, the start end variable speed conveyor 17. Since the first and second intermediate speed change conveyors 19 and 20 are simultaneously switched to high speed Va constant running, a desired interval S is provided between them, and the preceding fixed length veneer A is passed through the conveyor 31 to the next one. transferred to processes such as deposition. Detector 2 is at the front end of -1 to the standard length veneer.
When reaching position 4, the rear end is the start end variable speed conveyor 11
The next fixed-length veneer A-2, which is located near the front end of the veneer A-2 and whose end surface is in contact with or close to this, is moved by the tattoo body group 11 of the tattoo conveyor 5, which has rotated in the same way, to the end of the constant-speed conveyor 1. The fixed length veneer A-1 and the fixed length veneer A- are attached at the position P.
The desired spacing S is also given to the question 2. −“
When the series of fixed-length veneers A, A-1, and A-2 have been processed, the pricking conveyor 5 is stopped at a predetermined position by the action of the detector 14 to prepare for the next series of fixed-length veneers.

The embodiment shown in FIG. 3 shows an embodiment in which the length of the endless band of the pricking conveyor is set to twice the standard length, and two groups of pricking bodies are attached to the endless band. 1. Starting end variable speed conveyor 17. First and second intermediate speed conveyors 19, 20
, high speed conveyor 3, high constant speed conversion control [mechanism 23.26
Since the structure is the same as that of the previous embodiment, only the pricking conveyor will be explained.

The stabbing conveyor 5a has a plurality of endless strips 10a, each having a length twice the standard size, stretched between the front and rear rotary wheels 7a, 9a, and a predetermined length and a standard size on the surface of each endless band 10a. The two sets of pricking body groups 11a and 11b over a range of + or slightly shorter length) are in the same phase, and the interval between the pricking bodies Na at the starting end is approximately the standard size. The fixed-length veneers A, A-1, A-2 are attached so as to be the same as the rope, and are attached to the fixed length veneer A, A-1, A-2 by the stick group 11a or 11b in the lower running path of the endless band 10a.
A suspended conveyance path Xa-Xa is formed in which the conveyor is stuck and conveyed, and the drive mechanism 12a causes the conveyor to travel in the same direction and at the same speed as the constant-speed conveyor 1. In this embodiment, the endless band 1
Since 0a has a length twice the standard size, for example, the front rotary wheel 7a is located somewhat on the carry-in side from the end position P of the constant speed conveyor 1, and above the P point there is an endless wheel 7a. It includes a pressing body 32 such as a roller that presses the back surface of the band 10a, and an operating mechanism 33 such as a fluid pressure cylinder that raises and lowers the pressing body 32,
When the suppressor 32 is in the lowered position shown by the dotted line, the endless band 10
Pressure is applied to the back side of a to stick the stick group 11a or 11b to the fixed-length veneer, and the fixed-length veneer stuck to the stick group 11a or 11b is located at the end position P of the constant-speed conveyor 1. A detachable body 1 in the form of a bar, etc., placed approximately at a reference distance D (distance set when the length of the endless band is equal to the standard size) from the point.
6a and transferred to the start end variable speed conveyor 17, and the veneer portion that is not stuck is transferred from the constant speed conveyor 1 to the start end variable speed conveyor 17, and from then on, the desired spacing S is given as in the previous embodiment. be. The pressing body 32 is controlled to descend by a timer or the like so that it presses the back surface of the endless band 10a only when the group of stuck bodies 11a or 11b reaches the lower part thereof, and also presses the back surface of the endless band 10a. The endless strip 10 is detected by the detector 14 so that the pricked body Na at the starting end of the spliced body group 11a or 11b almost coincides with the front end of the fixed length veneer.
A is stopped at a predetermined position and the detector 13 is used to start the vehicle.

In this way, the length of the endless belt is an integral multiple of twice or more the standard size, and the number of groups of pricked bodies corresponding to the multiple is set so that the interval between the pricked bodies at the starting end is equal to the standard size. It can be implemented in the same way even if it is attached to an endless band, and these embodiments are effective when the standard size of the standard size veneer is relatively short.

〔Effect of the invention〕

As described above, the present invention provides a high-speed conveyor with a predetermined speed ratio behind a constant-speed conveyor with an interval equal to or larger than the standard size of the standard-length veneer, and a starting point between both conveyors that can be switched between constant speed and high speed. It is equipped with multiple sets of variable speed conveyors such as a variable speed conveyor and an intermediate variable speed conveyor, and a predetermined length is provided on the surface of an endless belt whose length is equal to or an integral multiple of the fixed length dimension extending backward from near the end of the fixed speed conveyor above the constant speed conveyor. One or more sets of pierced bodies covering a range of length are attached, and the preceding fixed-length veneer is run at high speed by each variable-speed conveyor, and when the trailing end reaches a predetermined position, the variable-speed conveyor is moved at a constant speed. The structure is such that the front end of the next fixed-length veneer is pricked by a group of pricking bodies on a pricking conveyor, and then carried suspended at a constant speed, so that the front and rear end surfaces are in contact or close to each other by the constant speed conveyor. It is possible to convey successive fixed-length veneers at different speeds without any problem even if they are conveyed in different conditions, and to give them spacing, and the conveyance path of each variable speed conveyor can be adjusted to match the speed ratio between constant speed and high speed. Since the configuration is configured such that the transfer of the fixed-length veneer between each conveyor is performed at the same speed, no tensile force in the feeding direction is applied to the fixed-length veneer when transferring between each conveyor. Thin, weak against tensile force in the feeding direction.

It is possible to always smoothly provide desired spacing even to regular-sized veneers that are fragile, fragile, and prone to cracking, and it is possible to perform processes such as reliable stacking of these regular-sized veneers by providing the spacing.

[Brief explanation of drawings]

The drawings show an embodiment of the invention, FIG. 1 is a side view, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a side view showing another embodiment, and FIGS. FIG.

Claims (2)

[Claims] (1) A constant-speed conveyor that runs at a constant speed transports fixed-length veneers whose front and rear end surfaces are in contact with or are close to each other, with an interval equal to or larger than the standard size of the fixed-length veneer placed behind the constant-speed conveyor to convey fixed-length veneers at a predetermined speed. a high-speed conveyor that runs at a relatively high speed; a predetermined length on the surface of an endless belt extending backward from near the end above the conveying surface of the constant-speed conveyor and having a length equal to the standard size of the standard-length veneer; A fixed-speed conveyor is provided with a group of pricking objects extending over a range to form a suspended conveyance path at a reference distance from the end of the constant-speed conveyor, and a pricking conveyor that runs at the same speed. Switching between the constant speed and the high speed, forming a conveyance path having a length equal to the reference distance or the reference distance plus a proportional reference distance commensurate with the speed ratio, following the constant speed conveyor at an appropriate distance from the conveyor. 1, which is provided with a start variable speed conveyor that can run, and is capable of switching between constant speed and high speed, forming a conveyance path having a proportional setting distance, which is the proportional reference distance multiplied sequentially by the speed ratio, between the start variable speed conveyor and the high speed conveyor; A high-speed conversion control mechanism comprising a set or plural sets of intermediate variable speed conveyors, and detecting the front end of the fixed length veneer and switching the starting end variable speed conveyor and the intermediate variable speed conveyor from constant speed running to high speed running all at once; and fixed length veneer. A conveyor device for spacing fixed length veneers, comprising a constant speed conversion control mechanism that detects the rear end and switches a start end variable speed conveyor and an intermediate variable speed conveyor from high speed running to constant speed running. (2) The pricking conveyor attaches a group of pricked objects, the number of which corresponds to the multiple, over a predetermined length range, to the surface of an endless band whose length is an integral multiple of the standard length of the fixed-length veneer. The conveyor device for providing spacing between fixed-length veneers according to claim 1, wherein the conveyor is a pricking conveyor in which the interval between the starting ends of each group of stuck objects is set equal to the fixed-length dimension.