CA1108511A - Infeed mechanism - Google Patents
Infeed mechanismInfo
- Publication number
- CA1108511A CA1108511A CA322,205A CA322205A CA1108511A CA 1108511 A CA1108511 A CA 1108511A CA 322205 A CA322205 A CA 322205A CA 1108511 A CA1108511 A CA 1108511A
- Authority
- CA
- Canada
- Prior art keywords
- boards
- edger
- conveyor
- centering
- adjustment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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- Control Of Conveyors (AREA)
Abstract
ABSTRACT
A method and a mechanism for feeding waned boards to an edger comprising a cross conveyer for the boards, a measuring equipment, a computer and centering and side-adjustment means to enable centering and side-adjustment of the boards in dependence of the determined values to optimize the yield in the edger. Adjacent the outlet end of the cross conveyor there are provided slide planes which form a part of a longitudinal infeed conveyor and which are adapted to receive the boards from the cross conveyor and to support the boards during the centering and side-adjustment. Means are provided for removal of the slide planes, as the centering and side-adjustment has been carried out, in a manner to place the board on a longitudinal conveyor means of the infeed conveyor to be fed into the edger.
Preferably the conveyor means are stationary during adjustment and are then accelerated in a controlled manner.
A method and a mechanism for feeding waned boards to an edger comprising a cross conveyer for the boards, a measuring equipment, a computer and centering and side-adjustment means to enable centering and side-adjustment of the boards in dependence of the determined values to optimize the yield in the edger. Adjacent the outlet end of the cross conveyor there are provided slide planes which form a part of a longitudinal infeed conveyor and which are adapted to receive the boards from the cross conveyor and to support the boards during the centering and side-adjustment. Means are provided for removal of the slide planes, as the centering and side-adjustment has been carried out, in a manner to place the board on a longitudinal conveyor means of the infeed conveyor to be fed into the edger.
Preferably the conveyor means are stationary during adjustment and are then accelerated in a controlled manner.
Description
.llb~5~l .SPECIFICATION
TO ALL WHOM IT MAY CONCERN:
se it known that we, Erik Gunnar Fornell and Hans Goran Urban Eklund, subjects of the King of Sweden, and residents of the city of Soderhamn, Sweden, have invented certain new and useful improvements in an "INFEED MECHANISM"
and we do hereby declare that the following is a full, clear and exact description of the same, reference being had to the accompanying sheets of drawing and to the numerals of reference marked thereon, which form a part of this specification.
; BACKGRO~ND OF THE INVENTION
Field of the Invention:
This invention relates to an infeed mechanism and more particularly to an infeed mechanism for feeding waned boards .
to an edger and comprising a cross conveyor, adapted to convey successive waned boards crosswise to the longitudinal axis thereof, a measuring equipment, adapted to measure the waned boards to permit an optimizing of the yield in the edger, computer, centering and adjustment equipments, adapted to perform centering and side-adjustment of the boards in dependence of the determined values, and an infeed conveyor, adapted to feed successive boards longitudinally into the edger.
In an infeed mechanism of this type it is generally desirable that the boards should be placed very quickly and accurately on the infeed conveyor and be conveyed into the edger immediately as they have been centered and side-adjusted. Also, it is desirable that the transport of the boards longitudinally staLtS quickly and that their movement is accelerated to a very high degree.
.
1~851~
SUMMARY OF THE INVENTION
In order to provide for an improve~ent in these respects, the infeed mechanism is provided, adjacent to the outlet end of the cross conveyor, with slide planes which form a part of the infeed conveyor and which are adapted to receive the boards from the cross conveyor and to support the boards during the centering and side-adjustment, and is further provided with means for removal of the slid~ planes, as the centering and side-adjustment has been carried out, in a manner to placethe board on a longitudinal conveyor means of the infeed conveyor to be fed into the edger.
For a fuller understanding of the invention reference may be had to the following description of a preferred embodiment illustrated on the accompayning drawinas.
ON THE DRAWINGS
FIG. 1 is a perspective view of an infeed mechanism embodying the invention, used in connection with a conventionJal edger;
FIG. 2 is an end view of the infeed mechanism in FIG. 1, as seen in direction of the arrow A in FIG. l;
FIGS. 3-5 illustrate a portion of the infeed mechanism in FIG. 1 and 2 in successive steps of an infeed cycle;
FIG. 6 is a perspective view of an end of a board being fed into the-edger; and FIG. 7 is a very simplified plan view of a centering and side-adjustment means.
AS SHOWN ON THE DRAWINGS
In FIG. 1 there is diagrammatically shown a cross conveyor, generally denoted 10, comprising six mutually parallel endless conveyor belts 11 on the uppermost portions of which waned boards are conveyed cross-wise, i.e. transverse to the longitudinal ~11LD8511 direction of the boards. At the inlet and outlet ends the cross-conveyor 10 is preferably provided with stop means (not shown) to control the board transport in such a manner that the boards are let through successively, one after the other.
During the transport cross-wise on the cross conveyor 10 each board, such as the board 12 in FIG. 2, is measured in any conventional manner at a large number of points along the length of the board, viz. by means of an only diagrammatically shown measuring equipment 13, the output of which is fed to a suitable computer in order to detèrmine the optimum yield from each board in the edger.
After the measuring the boards are moved further on to a ; combined centering, side-adjustment and infeed conveyor, generally ; denoted 14 in FIGS. 1-5. This infeed conveyor comprises receiving slide planes, generally denoted 15 and 16, longitudinal conveyor means, generally denoted 17, centering and side-adjustment means, generally denoted 18 and 19, and biasing rollers or the like, generally denoted 20.
OPERATION
Following a preceding measuring of the boards by means of the measuring equipment 13 and an optimizing and storing of control data in the computer a board 12 is fed cross-wise from the conveyor 10 down to the receiving slide planes 15 which at this momen-t may assume an inclined receiving position as shown 1n FIG. 3 but which are shortly thereafter moved into a horizontal position, aligned with the opposite slide planes 16.
Then, the board is centered and side-adjusted by means of the centering and side-adjustment means in such a manner that an optimum yield is achieved by the edging. Of course, the centering 5~L
and side-adjustment is carried out in dependence of the information stored in the computer, FIG. 4.
When the centering and side-adjustment has been completed the centering and side-adjustment means 18,19, FIG. 5, are moved side-wards and the slide planes 15,16 are moved downwards and sidewardsin such a manner that the board is left resting on the conveyor means 17 which is accelerated in a controlled manner to feed the board to the edger, generally denoted 21, FIG. 1.
In FIG. 7 the centering and side-adjustment means, generally denoted 18 and 19, are shown as comprising forks 22 and 23, movable towards and away from the board and pivotally journalled on a vertical pivot pin 24 and 25, respectively. Each fork 22,23 has at its innermost leg ends either jaws adapted to contact the board edges directly at the centering and side-adjustment motion, or are the innermost fork leg ends in turn provided with pivotable bogie frames 26,27 which may be provided with jaws to contact the board edges. The idea with the design as described with reference to FIG.
7 is that the contact of the centering and side-adjustment means 18, 19 with the board edges, which takes place in dependence of control signals from the computer but actually may occur at a position different from that at which the actual measuring was effected, should be largely independent of possible local irregularities, such as knot protrusions or the like.
In the illustrated case the centering and side-adjustment means 18,19 are considered to protrude upwards from lower constructional elements. However, also a reversed design may be contemplated, in which case the centering and side-adjustment means 18,19 would depend from controlling and maneuvering constructional elements situated at a level above that of the _ . _ _ .. _ . _ _ ~ .. _ _ . _ _ _ . _ _ . . _ _ . _ . . _ . .
5~
boards and thus better protected against fouling.
It should be mentioned that the centering and side-adjustment means 18,19 are preferably adapted to first center the board in accordance with a program stored in the computer, i.e. an aligning relative to a longitudinal vertical central plane through the edger 21, for instance, and then (or simultaneously, if desired) to ` bring about a displacement of the centers at the board ends. There-by a possibility to turn the board is achieved at the same time as it ensured that the production may be maintained also if the measuring system fails, viz. in that the side-adjustment in such a case may be "zeroed", either manually or automatically.
~ ' " ' '.
.
.~
~.
.. . . . . . . . ..
TO ALL WHOM IT MAY CONCERN:
se it known that we, Erik Gunnar Fornell and Hans Goran Urban Eklund, subjects of the King of Sweden, and residents of the city of Soderhamn, Sweden, have invented certain new and useful improvements in an "INFEED MECHANISM"
and we do hereby declare that the following is a full, clear and exact description of the same, reference being had to the accompanying sheets of drawing and to the numerals of reference marked thereon, which form a part of this specification.
; BACKGRO~ND OF THE INVENTION
Field of the Invention:
This invention relates to an infeed mechanism and more particularly to an infeed mechanism for feeding waned boards .
to an edger and comprising a cross conveyor, adapted to convey successive waned boards crosswise to the longitudinal axis thereof, a measuring equipment, adapted to measure the waned boards to permit an optimizing of the yield in the edger, computer, centering and adjustment equipments, adapted to perform centering and side-adjustment of the boards in dependence of the determined values, and an infeed conveyor, adapted to feed successive boards longitudinally into the edger.
In an infeed mechanism of this type it is generally desirable that the boards should be placed very quickly and accurately on the infeed conveyor and be conveyed into the edger immediately as they have been centered and side-adjusted. Also, it is desirable that the transport of the boards longitudinally staLtS quickly and that their movement is accelerated to a very high degree.
.
1~851~
SUMMARY OF THE INVENTION
In order to provide for an improve~ent in these respects, the infeed mechanism is provided, adjacent to the outlet end of the cross conveyor, with slide planes which form a part of the infeed conveyor and which are adapted to receive the boards from the cross conveyor and to support the boards during the centering and side-adjustment, and is further provided with means for removal of the slid~ planes, as the centering and side-adjustment has been carried out, in a manner to placethe board on a longitudinal conveyor means of the infeed conveyor to be fed into the edger.
For a fuller understanding of the invention reference may be had to the following description of a preferred embodiment illustrated on the accompayning drawinas.
ON THE DRAWINGS
FIG. 1 is a perspective view of an infeed mechanism embodying the invention, used in connection with a conventionJal edger;
FIG. 2 is an end view of the infeed mechanism in FIG. 1, as seen in direction of the arrow A in FIG. l;
FIGS. 3-5 illustrate a portion of the infeed mechanism in FIG. 1 and 2 in successive steps of an infeed cycle;
FIG. 6 is a perspective view of an end of a board being fed into the-edger; and FIG. 7 is a very simplified plan view of a centering and side-adjustment means.
AS SHOWN ON THE DRAWINGS
In FIG. 1 there is diagrammatically shown a cross conveyor, generally denoted 10, comprising six mutually parallel endless conveyor belts 11 on the uppermost portions of which waned boards are conveyed cross-wise, i.e. transverse to the longitudinal ~11LD8511 direction of the boards. At the inlet and outlet ends the cross-conveyor 10 is preferably provided with stop means (not shown) to control the board transport in such a manner that the boards are let through successively, one after the other.
During the transport cross-wise on the cross conveyor 10 each board, such as the board 12 in FIG. 2, is measured in any conventional manner at a large number of points along the length of the board, viz. by means of an only diagrammatically shown measuring equipment 13, the output of which is fed to a suitable computer in order to detèrmine the optimum yield from each board in the edger.
After the measuring the boards are moved further on to a ; combined centering, side-adjustment and infeed conveyor, generally ; denoted 14 in FIGS. 1-5. This infeed conveyor comprises receiving slide planes, generally denoted 15 and 16, longitudinal conveyor means, generally denoted 17, centering and side-adjustment means, generally denoted 18 and 19, and biasing rollers or the like, generally denoted 20.
OPERATION
Following a preceding measuring of the boards by means of the measuring equipment 13 and an optimizing and storing of control data in the computer a board 12 is fed cross-wise from the conveyor 10 down to the receiving slide planes 15 which at this momen-t may assume an inclined receiving position as shown 1n FIG. 3 but which are shortly thereafter moved into a horizontal position, aligned with the opposite slide planes 16.
Then, the board is centered and side-adjusted by means of the centering and side-adjustment means in such a manner that an optimum yield is achieved by the edging. Of course, the centering 5~L
and side-adjustment is carried out in dependence of the information stored in the computer, FIG. 4.
When the centering and side-adjustment has been completed the centering and side-adjustment means 18,19, FIG. 5, are moved side-wards and the slide planes 15,16 are moved downwards and sidewardsin such a manner that the board is left resting on the conveyor means 17 which is accelerated in a controlled manner to feed the board to the edger, generally denoted 21, FIG. 1.
In FIG. 7 the centering and side-adjustment means, generally denoted 18 and 19, are shown as comprising forks 22 and 23, movable towards and away from the board and pivotally journalled on a vertical pivot pin 24 and 25, respectively. Each fork 22,23 has at its innermost leg ends either jaws adapted to contact the board edges directly at the centering and side-adjustment motion, or are the innermost fork leg ends in turn provided with pivotable bogie frames 26,27 which may be provided with jaws to contact the board edges. The idea with the design as described with reference to FIG.
7 is that the contact of the centering and side-adjustment means 18, 19 with the board edges, which takes place in dependence of control signals from the computer but actually may occur at a position different from that at which the actual measuring was effected, should be largely independent of possible local irregularities, such as knot protrusions or the like.
In the illustrated case the centering and side-adjustment means 18,19 are considered to protrude upwards from lower constructional elements. However, also a reversed design may be contemplated, in which case the centering and side-adjustment means 18,19 would depend from controlling and maneuvering constructional elements situated at a level above that of the _ . _ _ .. _ . _ _ ~ .. _ _ . _ _ _ . _ _ . . _ _ . _ . . _ . .
5~
boards and thus better protected against fouling.
It should be mentioned that the centering and side-adjustment means 18,19 are preferably adapted to first center the board in accordance with a program stored in the computer, i.e. an aligning relative to a longitudinal vertical central plane through the edger 21, for instance, and then (or simultaneously, if desired) to ` bring about a displacement of the centers at the board ends. There-by a possibility to turn the board is achieved at the same time as it ensured that the production may be maintained also if the measuring system fails, viz. in that the side-adjustment in such a case may be "zeroed", either manually or automatically.
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Claims (4)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of feeding waned boards to an edger, in which the boards are measured during transport cross-wise on a cross conveyor and the determined values are evaluated by means of a computer to permit an optimum yield in the edger, and in which the boards, following the measuring, are conveyed further to a combined centering, side-adjustment and infeed mechanism, wherein the boards are centered and side-adjusted in relation to the edger to be then fed longitudinally through the edger, characterized in that the waned boards from the cross conveyor are fed out on removable slide planes and are held supported on these slide planes during the centering and side-adjustment, whereupon the slide planes are moved away while the respective board is permitted to lay down on a longitudinal infeed conveyor means for feeding into the edger.
2. A method as claimed in claim 1 wherein the longitudinal infeed conveyor means is held essentially stationary as the respective boards are permitted to lay down thereon, and is then accelerated in a controlled manner.
3. A method as claimed in claim 1 or claim 2, wherein the boards from the edger are fed out on a receiving conveyor on which the boards are guided in such a manner that they are prevented from lateral displacements.
4. A mechanism for feeding waned boards to an edger comprising a cross conveyor for the admission of the boards, a measuring equipment for measuring of the boards to permit an optimum yield in the edger,and necessary computer and centering and side-adjustment means to enable centering and side-adjustment of the boards in dependence of the determined values as well as an longitudinal infeed conveyor adapted to feed the boards longitudinally into the edger, wherein there are provided, adjacent the outlet end of the cross conveyor, slide planes which form a part of the longitudinal infeed conveyor and which are adapted to receive the boards from the cross conveyor and to support the boards during the centering and side-adjustment, and wherein there are further provided means for removal of the slide planes, as the centering and side-adjustment has been carried out, in a manner to place the board on a longitudinal conveyor means of the infeed conveyor to be feed into the edger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA322,205A CA1108511A (en) | 1979-02-23 | 1979-02-23 | Infeed mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA322,205A CA1108511A (en) | 1979-02-23 | 1979-02-23 | Infeed mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1108511A true CA1108511A (en) | 1981-09-08 |
Family
ID=4113623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA322,205A Expired CA1108511A (en) | 1979-02-23 | 1979-02-23 | Infeed mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1108511A (en) |
-
1979
- 1979-02-23 CA CA322,205A patent/CA1108511A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |