DE1199966B - Wood debarking machine - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. σ .:

B271

German class: 38i-l

Number: 1199 966

File number: M 433311 c / 38 i

Filing date: November 9, 1959

Opening day: September 2, 1965

Applicant:

Morbark Portable Debarker Company, Winn, Mich. (V. St. A.)

Representative:

Dipl.-Ing. R. H. Bahr

and Dipl.-Phys. E. Betzier, patent attorneys, Herne, Freiligrathstr. 19th

Named as inventor:

Norval K. Morey, Winn, Mich .; Robert M. Baker, Morley, Mich. (V. St. A.)

Claimed priority:

V. St. v. America May 16, 1959 (735 835)

Wood debarking machine

The invention relates to wood barking machines, which consist of two generally horizontally rotating

end, provided with gripping elements for gripping the trunk to be debarked pressure rollers for spiral feed of the trunk from the feeder to the feeder side as well as a fast rotating one Planing cylinder exist as a debarking tool.

In one of the known embodiments of such wood debarking machines, the one to be debarked rests Trunk on a support roller and is pressed against the planer cylinder by a second pressure roller pressed. According to another of the known embodiments of such wood debarking machines two support rollers are used on which the trunk rests in order to press it onto the support rollers through two To be debarked from planing cylinders.

These are known wood debarking machines
however, not without drawbacks. It has been found that it is only suitable for strains of a substantial 20
Weight, while debarking 2

normal round wood, especially with knots

Round wood comes to considerable difficulties in removing the trunk, for example branches the planer cylinder on such branch approaches give way, whereby the smoothness of the trunk in the meets. Then the planing cylinder jumps because the machine is improved and at the same time the enlargement Hardness of such knots from these wear the debarking tools extraordinarily and proper management of the trunk can be influenced in the meantime.

see the pressure rollers and the planing cylinder is. Although it is known, debarking tools under-

no longer given, which often leads to the removal of the trunk and the feed device on top of the trunk from the machine with the 30 half of the trunk to be arranged. It is about associated difficulties and dangers. but around relatively slowly rotating

The invention is based on the object of a bark rolls which are arranged side by side To create wood debarking machine in which the and must complement each other effectively if a There is a risk that the respective trunk to be debarked will result from perfect debarking of the trunk the guidance of the pressure rollers and the planer cylinder 35 should come. However, this results as additional and being thrown out of the machine, it is difficult that one crosses the trunk which can is eliminated. standing pressure roller must be provided, the

This is done according to the basic idea that experience has shown is not able to apply to the invention due to the fact that the two pressure rollers expose forces occurring in the turning of the trunk increase above the trunk 40 to be debarked.

are arranged, the trunk with its rest, the invention is practically on verGewicht to realize different ways on the planing cylinder located below. After preferred can rest, its storage on an opposite embodiment and according to another Merkdem Machine frame to a limited extent free times the invention, this is done in that under- and such a pivotable frame is provided, 45 half of the upper pressure roller one in the direction that the planing cylinder in its vertical central feed plate extending onto the planing cylinder

level a rocking movement which is preferably eccentric with respect to the center point of its longitudinal axis the influence of the unevenness of the trunk can perform.

This particular storage allows the planer cylinder to take a limited amount of the bumps

form is provided. It is also useful to have the frame with a protruding over the pressure rollers To provide support wall and the pressure rollers each pivotable on a relative to the support wall To attach support bracket. In a further embodiment of the subject matter of the invention

509 659/122

3 4

the support arm receiving the upper pressure roller in rolling have the task of closing the tree trunk

substantial vertical pivoting movements on the lead.

Trestle run, whereby he is under the action of the tree trunk from the feed side of the

a spring in the direction of the trunk. Machine (Fig. 1) between the pressure rollers and

The advantages that can be achieved by the invention are based on the delivery side of the machine especially in the fact that it promotes debarking. The pressure rollers 21 and 22 rotate The trunk of the trunk does not move out of the way in the direction of the arrow (F i g. 1), while the tree pressure rollers and the planer cylinder can get the trunk turns clockwise. These are and thus the log is prevented from being inclined slightly at the pressure rollers as shown Presence of knots from the machine io arranged. So the axis of the pressure roller 21 is closed is thrown. The storage of the planer cylinder on the feed side, but possible from the horizontal it is moreover that the planing cylinder is inclined downwards at an angle of about 15 ° and The unevenness of the trunk evades and therefore the shaft axis gives way in the horizontal plane hard knocks on the machine can be avoided. from the cross line on the delivery side of the machine

The details and other features of the Er- 15 decrease by about 15 °. The axis of the pressure roller 22 is

Finding result from the following description - inclined in the opposite direction and is to the horizontal

Exercise of an embodiment of a wooden trench around 15 ° to the delivery side down and in

manure machine according to the invention, on which the earth- the transverse direction by about 7 ^C backwards on the

Finding, however, is not limited, on the basis of the delivery page.

Drawings; it shows 20 The pressure roller 21 is provided with protruding mandrels

Fig. 1 is a side view of the debarking grooves 21a and thus gives a non-slip surface,

machine from the unloading side, it is fixed on the shaft 23, which is in bearings 24

F i g. 2 is a plan view taken along line 2-2 of the support arms 26 of a bracket 25 which is supported by a

F i g. 1, strut 27 are connected, rotates. The support arms

F i g. 3 shows the enlarged section of a top view, corresponding to the angular position of the print view in line 3-3 of FIG. 1, roller 21 bent at 26a and supported by pin 26b

F i g. 4 is a partial view taken on line 4-4 of FIG. 3 in the bearing 28 of a bearing plate 29 on the vertical and provides the axial reciprocation of the support wall attached. Like F i g. Fig. 6 shows is the planing cylinder support frame dar, wall 20 provided with cutouts 30 and 31, through

F i g. 5 is an enlarged side view of the planer 30 showing the connecting elements of the bearing plate 29

Cylinder with the means to bring about the go. The bearing plate 29 has arcuate slots

desired chip thickness, 32, through which the bolts 33 go and they with the

F i g. 6, an enlarged side view along the wall 20 connect. The bolts 33 are with heads

Line 6-6 of Figs. 1, 33a for supporting and connecting the plate

F i g. 7 is an enlarged side elevation of the means 35 29 provided with the wall 20 and are used for securing

for guiding the tree trunk on the unloading side.

of the machine, work according to the original shape

F i g. 8 is an enlarged side view of the center. The inclined position of the pressure roller 21 in the

for clearing away the chips, vertical plane can be determined by the position of the storage

F i g. 9 the adjustment device for the induction plate 40 can be changed accordingly,

tion of the desired chip thickness, the holder 25 is, as in FIG. 1 shown by

Fig. 10 is a plan view of Fig. 9, a threaded spindle 34 supported, which in the nut

According to Fig. 1 of the drawing of the preferred lower part 35 of the support attached to the support wall 20

Embodiment of the subject invention rests arm 36 and rotates with a crank H on

the machine on a support frame F, which, at the top end, is unimpeded by the openings 27 a

supported by the right-angled downwardly offset in the strut 27, can be raised or lowered.

Bearing leg 10, on the axles 11 wheels W carries On the threaded spindle 34 a spring 38 is attached.

and thus transported to any point in the forest, which is supported on a disk 39 against the

can be animalized. Strut 27 acts so that the bracket 25 is not without

At the front part converging towards the center F ' can swing 5 ° further upwards. The spring force is a strap 12 for hanging the machine on is so dimensioned that the vibrations of the pressure fastened in a motor vehicle. The support frame F can be dampened with rollers, but so strong that the more downwardly stepped profile presses the Rah- pressure roller on the tree trunk that the men F ' is through individual cross members 15, 16, 17, 19 rotation of the pressure roller on the trunk transferred and represents a very common construct. A tree trunk should represent an exceptional tion. The frame itself can be welded or have unevenness, for example a branch that is riveted. The side girders 13 and 14 of the support frame F are prevented from rotating in the machine by the cross girders 15, 16 and 17, so the tree trunk can force them to be connected at right angles, while frame 25 against the pressure of the spring 38 upwards, the side supports 18 60 that converge to the front are lifted. By means of the handle H , the Abmit the standing parallel to the cross member 17 between the pressure rollers 21 and 22 can be connected to the cross members 19. On the transverse support 16 corresponding to the circumference of the tree trunk, a vertical support wall 20 can be modified accordingly.

attached, which the generally vertically arranged The pressure roller 22, which is also with thorns 22 a Neten pressure rollers 21 and 22 is supported. The top 65 rotates with its shaft 40 on the axis Pressure roller 21 is both vertical and bearing 41. The bearing 41 is connected to the bearing arm 42 a backwards and outwardly inclined mounted on a platform 43, which can be rotated around the and lies above the pressure roller 22. This pressure bearing journal 45 is arranged on the support wall 20.

5 6

To accommodate the bearing arms 42 and 42 ', examples with b in FIG. 4 designated. The position α is provided with incisions 44 (FIG. 6) in the wall 20. taken when the screw 84 according to the A connecting rod 46 connects the bracket 26 with chain movement of the frame 74 and its transverse wheels bearing arms 42 and 42 'on one side by means of ger and according to the length and diameter of the ball and socket 46 α. This connection is used to set 5 logs to be debarked. Achieved that the frame 74 and the cross members 78 tree diameter is considerably larger than the previous one in position c in FIG. 4. The position of the person called, the position of the printing machine that has become necessary and its rocking movement and thus also the rollers for the transverse and spiral position of the planing cylinder 75, which is advanced with its shaft. io 85 in bearing blocks 86 on the rack frame 77

The pressure rollers 21 and 22 have the same bearings, is determined by the shape of the log diameter and are driven with approximately. The support arms 87 and 88 have approaches of the same speed from an air-cooled 89, which extend over the shaft 85 of the planing cylinder 75 internal combustion engine 47 Chip thickness or the engagement of cutting pins 76 would take endless drive belts. The drive belt 50 is determined. These arms 87 and 88 are rotatably driven by the pulley 49, which transmits them to a hollow shaft 90 which, between the rotations, lies on a pulley 51 with a large frame 77. A plate 91 with head screws in bearing blocks 53 (FIG. 6) on the front side of the 20 ben 92 is attached to the frame frame 77 diameter, which is fastened on the shaft 52 and behind the shaft 90. With the head screws 92 the support wall 20 will rotate. On the shaft 52, the height position of the arms 87 and 88 is regulated. At the other end a sprocket 54 is keyed, the arm 87 is lower than the arm 88, which in above the chain 57 transmits the rotation to vertically arranged in accordance with the desired chip thickness through sprockets 55 and 56. The sprocket 55 is the difference in the height of the upper surface of which is determined with its shaft 58 in the bearing arm 59 on the lowering arms. The arm 87, on the right-hand support wall 20 on the bearing side, is rotatably mounted. The shaft 58, which is lying on the machine and supports the tree trunk, consists of two parts, which are connected to one another by a joint on the feed side of the machine, while the arm joint 60 is connected to one another. The shaft part 88 on the discharge side of the peeled part of the tree oil rotates in the bearing block 62, which supports on the plate trunk. The planing cylinder 75 is ver-29 attached and through the opening 30 the bearing 30 sets under the pressure rollers 21 and 22 arranged plate 20 goes. At the end of the shaft part 61 sits and is in the clockwise direction (Fig. 1) attached chain wheel 63. The shaft 61 is held by a drive. Its rotation is therefore against the rotation of tubular pin 26 a and drives with the chain the cylinder and therefore opposite tenrad 63 via a chain 65 to a chain wheel 64, to the rotation of the tree trunk L. The center that on the shaft 23 of the pressure roller 21 sits. 35 axis 85 of the planing cylinder is generally

The sprocket 56 sits on a shaft 66 which is in parallel with the axis of rotation of the trunk L, the

Blocks 67 (Fig. 6) on the front side of the wall spiral between the pressure rollers 21 and

20 is stored. The shaft is moved by a joint 22. In the case of a greater curvature of the trunk

binding 68 a connected to the shaft 68, the pressure rollers 21 and 22 grip the trunk in mes,

a bearing block 69 on the plate 43 rotates and 40 while the planing cylinder 75 rotates accordingly

which goes through the opening 44 of the wall 20. On the poses. The planing cylinder then occupies

Shaft 68 is a sprocket 71 arranged, the mene inclined position is pivoted by the

Pressure roller 22 with a sprocket 72 on its ordered frame 74 is approved. Furthermore

The shaft 40 drives by means of the chain 73. is the inclination of the pressure rollers by the fact that

The rack frame F carries in its middle part 45 a trunk practically never fed exactly horizontally

between the cross members 15 and 16 a pivot is given from the outset. The through the

bar mounted frame 74, on which in the middle transverse planing cylinder reaction forces are exerted

to the longitudinal direction with a cutting bolt 76 provided by the frame 74 accordingly.

ner planer cylinder 75 (Fi g. 3 to 5) is arranged. took. Since it is very convenient that the trunks

The frame 74 has to be placed downwards in slide 50 before being between the pressure rollers

rather height parallel running rack supports 77 and is 21 and 22 are guided, is appropriate

connected to cross members 78. A loading point is arranged on the cross members and consists of a strip 93

bearing blocks 79 are arranged with bearings 81, in which there are thorns 93 λ and which are attached to the vibrating

which pin 80 of the cross members 15 and 16 of the ble frame 74 is attached. She stands in

Rack frame F to accommodate rocking movements 55 of the same height as the planer cylinder 75. In this

support the frame. Way it is possible to use any trunk up to 75 cm

The bearing blocks 79 are arranged eccentrically, in diameter and 6 m in length, of

so that the force of gravity brings the frame 74, as in the platform 93, to the pressure roller 21.

F i g. 4 shows a pivoting predominantly in clocks, which through their rotation move the trunk between

pointer direction allows. The stops 82 on which 60 the pressure rollers 21 and 22 pulls and spirals

Cross members 15 determine the permissible rotation of the moved further in the longitudinal direction, whereby it is in contact

Frame 74. They extend forward over the joint with the cutting pins 76 of the planing cylinder 75

movable frame 74 and are comes by screws 83. To keep a distance from the the trunk

and 84 adjustable in height. The planing cylinders that are being processed are protective devices

Screw 83 certain normal position of the frame 74 65 gene 94 and 95 on the task and delivery side of the

is the dotted line in Fig. 4. The horizontal frame is attached. The one with a delimiting element

The frame occupies position when a tree trunk 96 is provided with cover 94 by rods 97 in

the pressure rollers 21 and 22 is fed, and the sleeves 98 on the frame F is connected to the frame

bound. On the delivery side, a frustoconical guide 95 is pushed to the side on the longitudinal and spirally winding to the delivery carrier 103. The thickness of the chipboard is roughly ordered. The same log tray 99 is 1.2 cm for hard wood, for example oak, and on the delivery side. It is by the rods 100 of 2.5 cm in cedar wood. The support arm 87 is in front of and sleeves 101, which, like the sleeves 98 on the frame 5, are correspondent welded by the screw 92 at the beginning of the work, with the cross members 13 and 102 according to the desired chip thickness,
or 14 and 103 connected. This Begrenzungsele- The cutter bolts 76 are preferably pin-like elements 96 and 99 are in the sleeves 98, 101 and comparable wear perpendicular to the direction of rotation and slidably removable from them when they stand at the cutting edges 76 a. They are staggered with a change of position in the forest the movement of the io small distance from each other. Obstruct the machine. In contrast to the stem, with this tooth arrangement one is able to achieve a length that can be up to 6 m, the chip has a width of 40 cm and less than 2.5 cm, only a width of 2, 5 m. This can make the thick. The speed at which the machine can safely turn around even on narrow paths behind the planing cylinder is higher than that which can be transported by a motor vehicle. To limit the rotation of the pressure rollers 21 and 22. It is, for example, the opening of the tree trunk is in the delivery mode with the pressure rollers 30 to 38 rev / min. side of the machine a control rod B is arranged, and with the planing cylinder 2500 to 6000 rev / min. which stand in a vertical position on the cross member 15. With this high speed of rotation, it is possible to rotate the spacer about a pin 95 a, and the trunk is solidified in a relatively short time. The planer cylinder 75 will also rid the 20 of the bark. The power source required for bringing about the motor 47 driven and running at a higher revolution is a motor of speed than the pressure rollers 21 and 22. 30 HP. A 30 HP motor is quite capable. The drive is from the motor 42 via the double pressure rollers 21 and 22 and the conveyor pulley 49 through the drive belt 104 to the worm 107 and the planing cylinder 75 to the planing cylinder 75 transferred (Fig. 2). 25 drift. The pressure rollers 21 and 22 are vertically about the inclined obtained in a long working time and with respect to their axes opposite chip pile to eliminate 106, a conveyor is arranged so that the strain obliquely spirally and screw 107 with baffle 108 to the frame F bit is inclined to the transverse axis. attached. The screw conveyor 107 extends to the rear of the machine not necessarily only in the one shown at a distance from the frame F over the transverse arrangement of an upper roller 21 and a lower carrier 15 . The practically of two parts loading roller 22 conceivable, but may also with a stationary feed screw is provided with a universal joint pair of upper rolls 21, or with a pair of lower 107 b. The rear part of the screw conveyor rollers 22, which are generally axially aligned and 107 a is supported in the bearing 107 c, which also have separate drives to be equipped.
Support beam 107 d connected to the cross member 15 35 by the mounting of the planing cylinder 75 in is. The screw also receives its drive from the one particular frame, the 80 motor 47. The speed of rotation is with pivot is JE mounted in the machine frame, it is possible, but reduced by a reduction gear 109th Curved and twisted trunks can also be bear- To transmit the rotation, the shaft must be worked on. The 110 produced by the processing of curved 52, which is moved by the roller 51 , a chain 40 logs from the planing cylinder 75 is applied, the sprocket 111 on the rolling movement is absorbed by the bearing of the stub shaft of the reduction gear in the planing cylinder frame in pivot pins, offset. The most important feature is the inclination of the frame speed is controlled by the sprocket 114 of the 74 and the adjustment option of the arms 87 and reduction gears via a chain 115 an 45 88 to adapt to the log inclination. The sprocket 116 transmitted, the bar 93 provided on the worm thorns, which is attached to the bearing 117 on the frame 74 shaft. The bearing 117 is attached, contributes to the alignment. The planer is supported by the bearing supports 10 and 118. The cylinder position on the Nei-The machine is preferably of two ways. The conditions 94 and 95 are intended to be served. One worker guides the log in 50 for the safety of the worker especially for the infeed side of the machine, while the other case, when debarking crooked logs, the man removes the debarked log from the machine. beat back and forth. The machine is able to compensate for the swaying movement exerted by the trunk, both light, fresh and 55 a spring 38 against the trunk without a pressure roller 21 between the support sides 26 pressed. The dry as well as frozen wood with a through-order allows to take up the deflections caused by the trunk from 6.5 cm up to 40 cm and with a length th and, if necessary, up to 6 m, regardless of whether the trunk is straight or that the pressure roller 21 gives way upwards. Which is crooked to debark. In addition, the machine processing sequence cannot be wider than a motor vehicle due to crooked growth. In addition, the 60 trunks or branches are not made difficult, the machine is again not so low that it adapts to the vibrations on the frame that absorbs the ground in poor path conditions, and the roller 21 hits. The worker on the feed side of the machine can move upwards.

has the task of bringing the trunk onto the platform 93. The screw conveyor 108 has the task of

and 96 and to the front of the pressure rollers 65 of the processing quickly arising piles of chips

21 and 22 . The tree trunk will transport backwards. To this end

then offset by the pressure rollers in revolutions, the screw conveyor protrudes more than 1.8 m above the

and comes out of frame member 15 in contact with planer cylinder 75 .

9 and 10 show the means for adjusting the chip thickness. This is determined by the position of the support arm 87, which is fastened on a shaft 118 and, when bent forward, extends to the level of the planing cylinder 75. A lever 119 on the shaft 118 pivots the arm 87. By actuating a pawl 123 on the lever 119 , the setting is fixed in a segment arc 125 with a spring 126 which carries a bolt 120 at the other end. With this simple setting option, it is easily possible to set the desired chip thickness.

Claims (11)

Patent claims: 1. Wood barking machine consisting of two generally horizontally rotating, provided with gripping elements for gripping the trunk to be debarked pressure rollers for the spiral advance of the log from the task to the delivery and a rapidly rotating planing cylinder as debarking tools, characterized in that the two pressure rollers (21, 22) are arranged essentially above the trunk (L) to be debarked, the trunk (L) being able to rest with its entire weight on the planing cylinder (75) located below, the storage of which is free and to a limited extent on a relative to the machine frame (F) such a pivotable frame (74) is provided that the planing cylinder can perform a rocking movement, preferably with respect to the center of its longitudinal axis (85), in its vertical center plane, under the influence of the unevenness of the trunk (L). 2. Machine according to claim 1, characterized in that below the upper pressure roller (21) a feed platform (93) extending in the direction of the planing cylinder (75) is provided is. 3. Machine according to claim 1, characterized in that the frame (F) has a support wall (20) projecting over the pressure rollers (21, 22) and the pressure rollers are each mounted on a support bracket (29 or 43) pivotable with respect to the support wall . 4. Machine according to claim 3, characterized in that the upper pressure roller (21) receiving Support arm (25) an essentially vertical pivoting movement on the support bracket (29) can perform and is under the action of a spring (38) in the direction of the trunk. 5. Machine according to claim 1, characterized in that the distance between the pressure rollers (21, 22) is variable and a coupling rod (46) connecting the support arms (25, 42) of the pressure rollers, the inclination of the lower pressure roller (22) according to the movement of the upper pressure roller (21) can change depending on the pressure roller distance from each other. 6. Machine according to claim 1 to 5, characterized in that the planing cylinder (75) with spaced apart cutting pins (76) distributed around the circumference with parallel to the axis of rotation standing cutting is provided. 7. Machine according to claim 6, characterized in that the cutting pins (76) in the longitudinal direction viewed in individual series curves and staggered at a distance from the previous series so that no more than two Cutting pins are parallel to the shaft axis. 8. Machine according to claim 5 and 6, characterized in that the cutting bolt (76) so are arranged so that the bark to be lifted can be grasped one after the other from front to back. 9. Machine according to claim 1 to 8, characterized in that in the eccentrically mounted frame (74) on both sides of the planing cylinder (75) known elements (87, 88) for adjustable cutting depth limitation are arranged. 10. Machine according to claim 1 to 9, characterized in that an elongated waste bark conveyor screw (107) is attached below the machine frame (F) and the planing cylinder (75) and protrudes beyond the frame, one of the pressure rollers (21, 22) and the Conveyor screw common drive (47) is provided. 11. Machine according to claim 1 to 10, characterized by hold-down means (B, 95) on the frame (15) for limiting the fluttering movement of the trunk. Considered publications:
German Patent No. 960 671;
U.S. Patent Nos. 2,305,281, 2,390,459. For this purpose 2 sheets of drawings 509 659/122 8.65 © Bundesdruckerei Berün