JPH0422963Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a material feeding device in a manufacturing machine that manufactures columnar or plate-shaped laminated timber.

[Conventional technology]

To manufacture laminated wood, columnar or plate-shaped materials are sequentially conveyed and arranged in a line, and when they exceed a standard length, the remaining ends are cut off, and the standard-length materials are fed onto a table.

Additionally, an adhesive is applied to the assembled contact surface of the above-mentioned material at a suitable location during transportation.

The regular length materials fed onto the table are stacked upward in the case of columnar materials, and arranged in parallel in the case of plate materials, and assembled under pressure.

[Problem that the invention attempts to solve]

The material fed at the end of a group of materials for one row or layer of laminated wood is cut by a cutting device in order to match the entire length of the group of materials to the standard length of the laminated wood.
At that time, no consideration was given to the length of the cut material at the rearmost end on the product side and the remaining end to be cut, and as a result, the remaining end that could not be used due to the lack of material length was discarded. There were problems such as the material yield of the finished lumber was low, and the short length of the material at the rearmost end hindered the flow of the material, and the product was of inferior quality with defects at the rearmost end.

Furthermore, there was a problem in that the strength of the manufactured laminated timber was significantly reduced because the joints in the first row and the joints in the second row coincided with each other or were close to each other.

[Means for solving problems]

In order to solve the above problems, this invention has a stocking device installed to separately store the required number of materials of different lengths, and a dispensing device installed to dispense the materials stored in this storage device. This device constitutes an incoming material selection mechanism.

[Effect]

A length measuring device measures the length of each material that passes sequentially, and this length data is input to a calculation device.

The calculation device sequentially calculates the joint position data between each material of each group of laminated materials for one row or one layer of laminated wood each time the material length data is input, and stores it in the storage device at the same time. The difference between the standard length data indicating the standard length and the seam position data is calculated.

In addition, the calculation device compares each seam position data calculated in this way with the seam position data of the material group for the previous row stored in the storage device, and calculates the value of the material that has just passed through the material length measuring device. It is sequentially determined whether the seam that is to be formed is separated from the closest seam in the group of materials in the front row by more than a predetermined minimum allowable amount, and according to the results, the dispensing device works to adjust the stocking device to a predetermined length. pay out the material. That is,
The stocking device stores materials of different lengths, and the lengths of the materials are stored in the storage device for each stock, so the calculation device provides a comparison result of whether the material from the stocking device can be dispensed by the dispensing device. First, the data of the spare materials in the storage device is scanned, and the stock section containing materials that meet the dispensing permission conditions is moved to the dispensing position of the dispensing device and dispensed.

Furthermore, if the difference between the standard length data and the seam position data becomes less than a predetermined length determined by the length of the gate block, etc., the length of the material at the rear end on the product side will exceed the predetermined minimum usable length. and controlling the incoming material selection mechanism so that the material is selected so that the length of the remaining end cut by the cutting device is equal to or greater than the minimum usable length, and the material is discharged from the stock section. Issue a command signal.

〔Example〕

In the figure, reference numeral 1 denotes a first conveyance path through which columnar or plate-shaped materials a are sequentially fed.This first conveyance path 1 receives the materials a, and a stopper 2 provided at the head is used to convey the most advanced material. A second conveyance path 3 is connected thereto, in which the materials a are arranged in series with the materials a in contact with each other.

Further, on the tail side of the second conveyance path 3, a cutting device 4 is provided for cutting off the remaining ends of the raw materials arranged in series that are larger than a standard length.

Further, the second conveyance path 3 includes the second conveyance path 3
A third conveyance path 5 to which the upper standard length material a' is transferred is connected.

In the illustrated case, the third conveyance path 5 is a heating machine 6.
The tail portions are arranged side by side on one side of the second conveyance path 3 with the two sides in between, and the veneer plates 7 arranged in parallel on the remaining side of the second conveyance path 3 are moved forward by the expansion action of the cylinder 8 from the second conveyance path 3. By repeating the above steps, the fixed length material a' was fed onto the table 9 equipped with the heating machine 6, and the regular length material a' was sequentially fed from the table 9 to the third transport path 5. may be connected in series, the standard length material may be pushed out to a position where it comes off the stopper, and the standard length material may be sent from the second conveyance path to the third conveyance path.

In addition, in the illustrated case, the stopper 2 may be a stationary type that is supported by the veneer plate 7 and does not collide.

Further, at the above-mentioned appropriate locations, coating devices 10 and 11 are provided for applying an adhesive to the end surface of the material a and the assembled contact surface of the regular length material a'.

As shown in FIGS. 7 and 8, the end surface coating device 10 has an adhesive storage tank 12 disposed directly below between the rollers of the third conveyance path 5, and the tank 12.
An elevating plate 14 is provided directly above the cylinder 13 that moves up and down as the cylinder 13 contracts and expands.
While lowering the elevating plate 14 by the elongation action of
The materials a are stopped by colliding with each other, and then the elevating plate 14 is raised by the contraction action of the cylinder 13, and the adhesive adhering to the elevating plate 14 is applied to the end of the wood, and then the cylinder 13 is extended. The lifting plate 14 is lowered by the action, and the lifting plate 14 is lowered.
The material a is made to pass through the through-hole 14'.

Note that the fixed length material transported by the third transport path 5
In order to provide a predetermined distance between the opposite ends of each material a', the third conveyance path 5 may be constructed by combining a low speed roller conveyor followed by a high speed roller conveyor, for example.

As shown in FIGS. 4 and 5, the laminated surface coating device 11 brings the circumferential surface of the cooling drum 15 and the circumferential surface of the roll 16 located in front and rear into contact with each other, and applies the adhesive supplied between the contact surfaces. In one case, the adhesive is transferred to the circumferential surface of the cooling drum 15 and applied to the upper surface of the material a while it is running, and in the other case, as shown in FIG. At the same time, a driven umbrella-shaped transfer roll 19 is brought into contact with the upper circumferential surface of the rotating roll 18, and the coating is sometimes applied from the transfer roll 19 to the side surface of the material a while it is traveling.

Further, in front of the coating device 10, a heating device 20 for the material a is provided.

The heating devices 6 and 20 described above are used when the adhesive is thermosetting, and are not used when the adhesive does not require heating.

Further, the third conveyance path 5 is connected to an assembly press 21 for a fixed-length material a'.

The above-mentioned press assembly 21 has a roller conveyor 22 connected to the third conveyance path 5 as shown in FIGS. A swing plate 2 is provided directly above the roller conveyor 22 and swings in the left-right direction by engaging a pinion 27 with a rack 26 that moves forward and backward by the action of a cylinder 25.
8 is provided, and the fixed-length material a' is fed from the roller conveyor 22 onto the pedestal 24 by the swinging of the swing plate 28, and the pedestal 24 The standard size material a' is lowered at a pitch equal to the wall pressure of the standard size material a', and the required layer of the standard size material is placed on the pedestal 24.
After a' are stacked, a stopper 3 that is raised by the expansion action of the cylinder 29 is placed at one end of the standard length material a'.
0, then the pressure plate 32 is lowered by the extension action of the cylinder 31 to apply pressure from above, and the thrust plate 34 is advanced by the extension action of the cylinder 33 to apply pressure toward the ruler plate 35. In the case where the veneer 37 is advanced by the elongation action of the veneer 37 and the other end of the standard length material a' is pressed, it is assembled into a columnar shape, and in the case where the veneer 37 is assembled into a columnar shape as shown in FIGS. 13 and 14, it is arranged on one side of the roller conveyor 22. cylinder 3
The veneer 40 is advanced by the elongation action of 9, and the fixed length material is transferred from the roller conveyor 22 onto the table 38.
A' is fed in, and the fixed length material a' on the table 38 is fed by advancing the thrusting plate 40' by the expansion action of the cylinder 39'. In addition, stoppers 41 and cylinders 42 are provided on both ends of the table 38 in pairs.
The veneer 43 advances due to the elongation action of the material a.
There is a plate-like case in which the end surfaces of the standard length material a' are bonded and the opposite sides of the standard length material a' are joined by providing resistance to the sliding of the standard length material a' pushed by a resistance plate 44 on the table 38.

Note that the standard length material a′ to be slid is the cylinder 45.
The holding plate 46 is lowered by the extension action of the holding plate 46 to prevent it from lifting up.

Further, a material length measuring device 47 for measuring the length of the material a is arranged at a predetermined position on the first conveyance path 1.

As shown in FIGS. 15 and 16, the material length measuring device 47 described above is designed to measure by rotating a disk 48 whose peripheral edge is in contact with the upper surface of the running material a.

Further, on the downstream side of the material length measuring device 47 in the first conveyance path 1, an incoming material selection mechanism 49 is disposed that allows only the material a having a length suitable for the assembly conditions to pass through to the next process.

As shown in FIGS. 17 and 18, the incoming material selection mechanism 49 includes tables 50 whose upper surfaces are flush with the upper surface of the first conveyance path 1 on both sides of the first conveyance path 1. , a plurality of materials a having different lengths can be moved in a direction perpendicular to the direction of entry of the materials a conveyed above the first conveyance path 1 by the expansion and contraction action of the cylinder 53, and have different lengths in parallel. A stocking device 52 is formed by a gate 51 that is open at the bottom and is stored in a shape, and a front end opening of each gate 51 in the direction in which the material a enters is formed by a gate plate 55 that is opened and closed by being raised and lowered by a solenoid 54'. The material a, which is sequentially conveyed through the first conveyance path 1, is passed through the material length measuring device 47.
The length of the material is measured by , and the measured length of the material is input to the calculation device 58 .

The arithmetic device 58 is composed of an arithmetic circuit, an arithmetic register, a comparison circuit, a control circuit (not shown), etc., and is used to calculate each material a of the standard length material a' for one row or one layer of laminated wood.
Each time the seam position data is input, it is sequentially calculated and stored in the storage device 59, and the settable standard length of the laminated wood (see Fig. 24) and the seam position data T string (T ₁ , T ₂ . . . ) and the G column (G ₁ , G ₂ ...).

The calculation device 58 compares each seam position data calculated in this way with the seam position data of each material a for the front row stored in the storage device 59, and calculates the seam position data of each material a that has just passed through the material length measuring device 47. It is sequentially determined whether the seam to be formed by material a is separated from the closest seam in material a group in the front row by a predetermined minimum allowable length or more, and according to the result, a solenoid 54 for opening and closing the gate 51 is activated. In order to control ', a solenoid control circuit 60, a hydraulic control circuit 62 for operating the cylinder 53, and a hydraulic device 61 are operated as appropriate.

The comparison operation by the arithmetic unit 58 described above is performed, for example, as follows. As shown in FIG. 23, the storage device 59 first stores the material a of the first row of laminated wood.
The joint position data T ₁ , ..., T ₆ obtained by the arithmetic unit 58 from the material length data are stored as distance data with the front end 0 as the origin. When the initial material length G ₁ is input, operation 58 calculates T ₁ ±d (d is the predetermined minimum allowable spacing between the joints of the two materials a group to be compared) and G ₁
If G ₁ ≦T ₁ -d or T ₁ +d≦G, the material is allowed to pass through the gate block.
For example, in FIG. 18, the fourth gate 51 from the bottom is opened above the center of the first conveyance path 1 by the solenoid control circuit 60 and the hydraulic system control circuit 62. The condition is maintained. However, in the case of T ₁ + d≦G ₁ , the same comparison is made for T ₂ or T ₃ and onwards as in the case of T _{1, and if G 1 has} a difference from all seams in the first row by more than the above minimum allowable interval Only the material is allowed to pass through the gate block.

If the above comparison result is, for example, T ₁ -d<G<T ₁ +d, the arithmetic unit 58 causes the solenoid control circuit 60 to close the open gate block and remove the material a.
is captured and the hydraulic cylinder 53 is operated by the hydraulic control circuit 62 to evacuate the captured material a to either the left or right direction of the first conveyance path 1 in FIG. Memorize the block number. If all or some of the gate blocks other than those on the center of the first conveyance path 1 contain spare materials of different lengths (including materials that were rejected from passing through the gate blocks based on the previous comparison results). Since the length of the material is stored in the storage device 59 together with the gate block number, when the calculation device 58 receives a comparison result indicating that the material has not passed through the gate block as described above, it first stores the material length in the storage device 59.
The data of the preliminary material No. 9 is scanned, and the gate block closest to, for example, the first conveyance path 1 is moved to its center position, and opened by the solenoid 54' to feed the material. Note that the table 50 is placed at an appropriate position on the journey of the gate 51.
By providing a droplet in each gate block, the material in either gate block can be discharged in response to a command from the arithmetic unit 58.

When the processing for the first material in the material group in the second row is completed as described above, the seam position data G ₂ , ... are sequentially obtained for the second and subsequent materials in the second row, and the same process as above is performed. The process is repeated.
Since the seam data G ₁ , . . . in the second column is used for the above comparison operation and is also stored in the storage device 59, the seam data G ₁ , . . . for the material group in the third column are
The above process is repeated using G _{1 ,} .
Operation control is performed.

Further, when the difference between the standard length and the seam position data becomes less than a predetermined length, the calculation device 58 adjusts the length of the material at the rearmost end on the product side to be equal to or more than the minimum usable length, and the cutting device The feed material selection mechanism 4 selects and feeds a material whose length of the remaining end to be cut by 4 is equal to or greater than the minimum usable length.
9 is supplied to the hydraulic system control circuit 62 and the solenoid control circuit 60.
The minimum length that can be used is, for example, 150 mm, which is a length that allows the material to flow smoothly without falling off or slipping from the machine during the gluing process, and that does not make the product look unsightly. Set to . Further, materials whose remaining ends to be cut are shorter than this minimum length are processed by the incoming material selection mechanism to be used at the beginning or middle of the group of materials from the next row onward. For example, in Figure 24, the material
When the difference between the seam position data G ₅ and the standard length calculated by sending in a ₅ - G ₅ becomes shorter than a predetermined length, the arithmetic unit 58 immediately stores the measured material and the length in the storage device 59. Select a material a ₆ from among the materials in the gate 51 that is larger than the above-mentioned minimum usable length, and whose remaining end Z is also greater than the minimum usable length, and feed it. A command signal for controlling the incoming material selection mechanism 49 is issued. In this case, the above difference −G ₅
is shorter than the minimum usable length above, a ₅
A shorter material is selected and fed, thereby controlling the operation of the feeding material selection mechanism so that the length of a ₆ after cutting off the remaining end is longer than the above-mentioned minimum usable length. do. If necessary, it is of course possible to make it possible to perform a switch operation or the like to select the material that makes the length of the remaining end Z the shortest.

Note that the arithmetic device 58, storage device 59, solenoid control circuit 60, and hydraulic device control circuit 6 described above
The second example can be implemented using a commercially available programmable controller, sequencer, etc.

As described above, the standard-length materials a' that are lined up in series on the second conveyance path 3 and have their remaining ends cut off by the cutting device 4 are directed to the third conveyance path 5, and are then transferred to the coating device. 11 and 10, the adhesive is applied to the press assembly 21, and the second
The laminated timber is manufactured in the shape of a column as shown in the figure or in the form of a plate as shown in FIG.

Also, instead of the above-mentioned incoming material selection mechanism 49, a first
As shown in FIGS. 9 and 20, on one side of the first conveyance path 1, there are a plurality of sprockets 64 arranged in parallel on the upper side and the lower side, respectively, and the sprockets 64 above and below the sprockets 64.
The extending parallel endless chains 65, the protruding rods 66 for receiving shelves for the material a protruding from equally spaced positions of each chain 65, and the predetermined protruding rods 66 are aligned with the first conveyance path 1 and stopped. Chain 6
A stocking device 52 composed of a traveling drive device 69 of No. 5 and a dispensing device configured to advance and retreat a thrust plate 68 by the expansion and contraction of a cylinder 67 to unload the material a on the protruding rod 66 onto the first conveyance path 1. Device 5
In the case of an incoming material selection mechanism composed of 6 and 21st
As shown in the figures and FIG. 22, a table 70 is provided on one side of the first conveyance path 1, and a material a whose side edge of the head portion of the table 70 is along the end of the first conveyance path 1 is as follows. a thrusting plate 73 that feeds the material a stopped on the first conveyance path 1 by the stopper 75 onto the table 70 as the cylinder 72 expands;
A table 85 whose upper surface is on the same level as the conveyance surface of the second conveyance path 3 is provided on both sides of the second conveyance path 3, and a table 85 is installed in parallel with the table 85, which is placed directly above the second conveyance path 3 with an interval that allows the material a to pass through. Center gate 76 with an open top
And, on both sides of this center gate 76, tables 8
Side gates 7 with openings on the upper and lower surfaces arranged in parallel on 5
9, 79, and a rotating arm 81 having a suction cup 80 at its tip so as to supply the material a on the table 70 to the center gate 76 and side gates 79; The veneer 78 slides due to the contraction and expansion of the side gates 79, 7.
A window 82 is provided at the lower edge of the side wall on the center gate 76 side of 9 so that the material a passes through, and the side gate 7
The material a located on the table 85 in the cylinders 9 and 79 is moved to the table 85 by the expansion action of the cylinder 83.
There is a case where an incoming material selection mechanism is used in combination with a dispensing device 56 constituted by a projecting plate 84 that supplies the material to the second conveyance path 3 through a window 82 from above.

In addition, 86 in FIG. 21 is a turning cylinder of the arm 81 having a suction cup 80, 87 is a lifting cylinder of the arm 81, and 88 in FIG. 89.

〔effect〕

As described above, the glulam lumber manufacturing machine according to the invention includes a stocking device installed in front of the material length measuring device to separately stock the required number of materials of different lengths, and Since it is equipped with an incoming material selection mechanism consisting of a dispensing device installed to dispense a certain material, the material is automatically discharged to allow each seam between the previous row and the next row or between the previous layer and the next layer. If the distance is longer than that, the material yield of the cut end can be significantly improved, and since the length is longer than a certain value, the flow of the material will not be hindered.

Furthermore, since the material stored in the stocking device is discharged during the flow of the material, there is no need to stop the operation of the machine.

[Brief explanation of drawings]

Fig. 1 is a plan view of the manufacturing machine, Figs. 2 and 3 are perspective views of the laminated wood, Fig. 4 is a side view of applying adhesive to the upper surface, Fig. 5 is a partially cutaway side view of the same, 6th
The figure is a front view of applying adhesive to the side surface, Fig. 7 is a front view of applying adhesive to the butt end surface, Fig. 8 is a side view of the same, Fig. 9 is a front view of the heating machine, and Fig. 10 is a front view of the same. 11 is a plan view of the columnar press assembly; FIG. 12 is a side view of the same; FIG. 13 is a plan view of the plate press; FIG. 14 is a side view of the same;
Figure 5 is a front view of the material length measuring device, Figure 16 is a side view of the same as above, Figure 17 is a side view of the incoming material selection mechanism, and Figure 1
Figure 8 is a plan view of the same as above, Figure 19 is a side view of another incoming material selection mechanism, Figure 20 is a front view of the same as above, and Figure 21 is a front view of the same as above.
22 is a side view of the same as the above, FIG. 23 is a control circuit diagram, and FIG. 24 is a plan view of a seam of assembled standard length materials. a...Material, a'...Standard length material, 1...First conveyance path, 2...Stopper, 3...Second conveyance path, 4...
Cutting device, 5...Third conveyance path, 6 Heating machine, 7...
Veneer, 8...Cylinder, 9...Table, 10
...Coating device, 11... Coating device, 12... Storage tank, 13... Cylinder, 14... Lifting plate, 1
5...Cooling drum, 16...Roll, 17...Storage tank, 18...Rotating roll, 19...Transfer roll, 20...Heating machine, 21...Assembly press device, 22...Roller conveyor, 23... ...Cylinder, 24...Base, 25...Cylinder, 26...
Rack, 27... Pinion, 28... Rocking plate, 2
9...Cylinder, 30...Stopper, 31...Cylinder, 32...Pressure plate, 33...Cylinder, 3
4... veneer, 35... ruler plate, 36... cylinder, 37... veneer, 38... table, 39...
...Cylinder, 39'...Cylinder, 40...Piece, 40'...Piece, 41...Stopper, 42
...Cylinder, 43...Piece plate, 44...Resistance plate, 45...Cylinder, 46...Press plate, 47...
... Material length measuring device, 48 ... Disc, 49 ... Incoming material selection mechanism, 50 ... Table, 51 ... Gate, 5
2...Stock device, 53...Cylinder, 54'
... Solenoid, 55 ... Gate plate, 56 ... Dispensing device, 58 ... Arithmetic device, 59 ... Storage device,
60...Solenoid control circuit, 61...Hydraulic system, 62...Hydraulic system control circuit, 64...Sprocket, 65...Endless chain, 66...Protruding rod,
67... cylinder, 68... veneer, 69... drive device, 70... table, 72... cylinder, 73... veneer, 75... stopper, 76...
...Center gate, 77...Cylinder, 78...
Veneer, 79...Side gate, 80...Sucker,
81... Swivel arm, 82... Window, 83... Cylinder, 84... Projected plate.

Claims (1)

[Scope of utility model registration request] A second conveyance path is connected to the first conveyance path through which columnar or plate-shaped materials are sequentially fed, and a stopper for stopping the most advanced material at the head of this second conveyance path is arranged in series on the tail. A cutting device is provided to cut off the excess end of the material beyond the standard length, and a second
The conveyance path is connected to a third conveyance path on which the fixed length material on the second conveyance path is transferred, and furthermore, an application device is provided at the appropriate location for applying an adhesive to the assembled contact surface of the material, and the third conveyance path is connected to the conveyance path. A press assembly for fixed-length materials is provided on the path, and a material length measuring device is provided for measuring the length of the material placed at a predetermined position on the first conveyance path, and a material length measuring device for measuring the length of the material on the first conveyance path is provided. There is an incoming material selection mechanism located downstream of the vessel that allows only material with a length suitable for predetermined assembly conditions to pass through and sends it to the next process, and a material length data input from the material length measuring device mentioned above. Calculating means for calculating joint position data between each material for each material group for one row or one layer of Motozuki laminated wood, storage means for storing these joint position data, and the above-mentioned materials. control means for performing a predetermined control operation on the incoming material selection mechanism by having a comparison means for performing a predetermined comparison with the seam position data output from the calculation means every time material length data is supplied from the length measuring device; A laminated lumber manufacturing machine is equipped with a stocking device for separately storing the required number of materials of different lengths, and a stocking device for dispensing the stocked materials. A material feeding device for a laminated lumber manufacturing machine, characterized in that the feeding device and a feeding device constitute a feeding material selection mechanism.