FI91222C - Device for barking logs and the like - Google Patents

Description

91222

APPARATUS FOR WASHING LOGS AND THE LIKE

The invention relates to a device for the flow of logs and the like, which device comprises 5 to a plurality of support wheels horizontally arranged on both sides of the log and on the support arms at an angle to the log to support the log in a feed line formed by the wheels and a rotating device for driving at least one support wheel. 10 - a blade element with a blade arranged between the two support wheels in the direction of the log and rotatably mounted therewith, as well as its rotating means and adjusting means for placing the blades on the log so that the axis of rotation of the blade element is substantially perpendicular to the feed line;

The invention relates specifically to the manufacture of soap logs used in construction.

20

To use a log in construction, it must be peeled or machined before it is fitted into a building. Traditionally, the shell has been removed by draining it by hand, which, however, is waning due to its heaviness and slowness. The advantage in this procedure has been that the working method has saved the wooden surface under the bark intact and has not broken the wood. A log like this has been long-lived, while a log machined or turned into a rough log decays four times faster than a traditional soap log. To date, there have been no suitable machines for making a conventional soap log, but all the mechanical processes in the treatment of the log have led to an unfavorable result in terms of the surface structure of the log.

It is known to perform the treatment of the log by turning it into a flat-packed ski at the same time as making the cavities required at the ends of the latch joint as well as the so-called reservation at the bottom of the log. Such industrial manufacturing, of course, offers advantages due to large series and advanced machining, but the aforementioned pin structure as well as the inherent vitality of the log building are lost.

40 2

Mechanical log pre-treatment methods are mainly divided into two groups, which are turning methods and cutter-mill methods. Machines for turning logs have been described in Finnish publication 43116 and in Finnish patent application 850175. Turning is used to make logs of a geometrically completely correct cylinder or, at best, a conical body.

Machines based on a cutter mill are disclosed in German Patent Application No. 2309940, Swedish Patent Publication No. 318702 as well as Norwegian Patent Publication No. 151075.

The device according to the present invention relates to a peeling machine known from Finnish patent 34842, which has a blade arrangement of at least the type mentioned in the introduction. However, this machine is not able to peel the log in such a way that it retains the dense wood surface below the shell. The machine produces a short chip chip and its blade sinks so deep into the wood that it breaks the wood grain in the surface layer. Apparently, the machine is not intended for the production of logs, as the working footprint of the machine is rough anyway.

The object of the present invention is to provide a device specifically suitable for the manufacture of soap logs, the working footprint of which resembles a hand-made soap. In particular, it is desired with the device according to the invention to maintain the integrity and tightness of the wooden surface below the bark. The characteristic features of the device according to the invention are set out in the appended claims. It is essential for the operation of the device according to the invention that it generates 30 long chips, which is an important factor in providing a dense wood surface. An important tool here is the rounded or otherwise spaced ends of the blades, in which case the working method resembles the flow of a borehole somewhere. The long chip starts and breaks softly. On the other hand, from the point of view of the operation of the device, the important log is controlled 3 5 and strong bonding with flexible wheels independently of the blade element, whereby the handling of the blades can be sufficiently gentle. Most preferably, the blade is pressed against the log with a suitable spring force.

li 3 91222

Other preferred embodiments and advantages of the invention will become apparent in connection with the embodiments set forth below.

The invention will now be described with reference to the accompanying figures, which show a device according to the invention for removing the shell from logs by mechanical flow.

Figure 1 shows a device for the flow of logs fitted to a tractor.

10 Figure 2 shows a cross-section of the device of Figure 1 without a tractor.

Figure 3 shows the articulation arrangement of the blade element.

Figure 4 shows the blade element in detail.

The device according to the invention is most preferably constructed for attachment to the three-point hitch of the tractor and for connection to the power take-off and the hydraulic take-up of the tractor. The tractor thus forms part of a working implement.

20 The device to be attached to the tractor is built on a frame 17 which forms the base when the device is in use. A subframe 2 is attached to it by means of a joint 16, to which a plurality of pairs of wheels are further articulated on the arms 7 and 9. Opposite wheels 8 and 4 in the fourth pair form a feed line in which the log 1 25 is moved back and forth to flow. The outermost pairs of wheels 8 with their fork arms 7 are mounted on an extension arm 21 which telescopically extends inside the subframe 2. In the transport position, the implement is not much wider than the tractor, while in the operating position, the extension arms 21 can be pulled out, whereby the outermost intervals 30 between the wheels 4 and 8 are made large enough for the normal handling of logs.

On the feed line, the block is pressed by counter-wheels 3, which together with the lower support wheels 4 and 8 provide a firm grip on the support to be pushed.

The subframe 2 is centered by springs 15 from the body 17, but when the log 1 to be pushed is placed in the device, the feeding line 4 is allowed to tilt and rotate slightly to facilitate the feeding. At the same time, when handling long logs, the device is not subjected to unreasonable stresses, as the subframe allows small tilting and twisting.

5

The middle pairs of support wheels 4 are rotated by means of a motor 5. When the support arms 7 and 9 have set the pairs of wheels slightly obliquely, the rotating movement also provides longitudinal transport of the log, the direction of which can be changed either by changing the direction of rotation 10 or by turning the direction of the pairs of wheels by means of the cylinder 20. Correspondingly, in this case the direction of the upper counter-drills 3 must be reversed.

Figure 2 shows the size of the attachment to be mounted on the tractor. The counter members of the three-point hitch are denoted by reference numerals 42 and 41, and the power take-off of the tractor is connected by a fractured joint to the grooved end 43 of the shaft 13 of the blade element 6. In addition, the hydraulic connections of the device cylinder 20.

The counter-drill 3 is suspended by means of an articulated arm 10 on a support arm 14 which is further articulated to the subframe 2. It can be driven by means of a hydraulic cylinder 15, whereby the counter-drills 25 3 can be pressed against the log. In addition, the support arm 14 has a hook 22 mounted on the end of the telescopic extension, by means of which the handling of the logs in and out of the device is convenient.

The lower support wheels 8 and 4 can be pivoted 30 on both sides by means of an arm 19 and a synchronous arm 18 connected thereto, whereby they can be operated simultaneously. A partially manual turning system is also possible, because a change in the transport direction can also be made by changing the direction of rotation.

35 Hydraulic valve block 14 is used to operate all functions. The blade element rotates continuously, as its speed does not have to be very high. In this case, by means of the actuating levers 441-444, the support arm 14 is driven by means of the cylinder 15 in the feed of the log 5 91222 as well as in the outlet and the drive motor

5

Figure 3 shows in more detail the fastening arrangement of the blade element 6. The bearing of the blade element 6 is placed on a support supported by parallelepiped arms 24 from a turntable 23 resting on a subframe 2. In this arrangement, the center line 10 of the log 1 strikes approximately the same height of the blade element 6 regardless of its thickness. The blade element is pressed against the log by means of a spring 25. In addition, the system includes a hydraulic cylinder with which the blade element is pulled out of the logs during feeding and removal of the log.

15

The blade arrangement of the blade element 6 according to Figure 4 is very essential for the invention. The knife blades 11 are shaped in such a way that they have knife-like ends 12. This makes a substantial difference in the operation of the device compared to the known peeling machine 20 mentioned above. The machine produces a long chip and the working footprint of the machine resembles a hand-flowing surface.

The device according to the invention can be modified in many ways. Preferably, all the lower support wheels are mounted on a double fork, which is then articulated to the subframe. In this case, the traction can be transmitted from one wheel to another with a simple chain drive, as well as the synchronization of the rotation of the wheels is simpler than before.

30

Claims (9)

6 An apparatus for flowing logs and the like, the apparatus comprising: 5. a plurality of support wheels (4.8) arranged horizontally on both sides of the log (1) and on the support arms (9,7) at an angle to the log to support the log on the wheels (4.8). in a feed line and a rotating device (5) for wrapping and conveying at least one support wheel (4) and thus also the support (1) pyo-10, a blade element (6) spaced between the two support wheels (4) and rotatably mounted on the blade (11) and adjusting means (23, 24, 24) for placing the blades (11) on the log so that the axis of rotation (6) of the blade element 15 (6) is substantially perpendicular to the feed line, and - a body (17) for the support arms (9,7) and the blade element ( 6), characterized in that the device comprises counter-drills (3) placed on the opposite side 20 of the log (1) on its arms (10) for tying the log independently of the blade element (6), that the support and the counter-wheels (4,7,3) are provided with a resilient circumferential part, for example a pneumatic rubber ring, and that the ends of the blades (11) gradually comprise a part 25 extending from the supports, for example a knife-shaped rounded head (12). Device according to claim 1, characterized in that at least the lower support wheels (4,8) are mounted on a subframe (2) fixed to the frame (17) by means of a ball / cross joint member (16) 30 so as to allow limited rotation to tilt the feed line. and / or to rotate and thus facilitate the feeding of the log to be machined. Device according to Claim 2, characterized in that the lower support wheels (4, 4) are arranged in pairs of opposite wheels, which are at least two blade elements (6) on both sides in the direction of the feed line and whose support arms (9, 7) are connected to each other by articulated 7 91222 by means of a synchronous arm (18), so that all pairs of wheels can be turned at the same time. Device according to Claim 3, characterized in that the opposite support wheels (4.8) are always mounted on the same support arm which is articulated to the subframe. Device according to Claims 1 to 4, characterized in that the subframe (2) has extension arms (21) which can be pulled out in the direction of the log, in which the support arms (7) of the outermost wheelsets are articulated. Device according to Claims 1 to 4, characterized in that the device comprises a support arm (14) articulated to the subframe (2) and an actuator (15) for operating the support arms (10) of the counter-drills (3) mounted on this support arm (14). ) and that at the end of the support arm (14) there is a lifting hook (22) for lifting the log on the support wheels (4,8). Device according to Claims 1 to 6, characterized in that the blades (11) are arranged at an angle of 0 ° to 45 ° with respect to the radial direction of the blade element (6) and the turned part in each steel (11) is formed by a knife-shaped rounded head (12). Device according to Claims 1 to 7, characterized in that the body (2) comprises a so-called counter-members (41,42) adapted to the three-point hitch and that the shaft (13) of the blade element (6) is adapted to be connected to the power take-off of the tractor by means of a pivot joint. 30 Device according to Claims 1 to 8, characterized in that the blade element (6) with its bearings is mounted on a support supported by articulated parallelogram arms (24) so that, regardless of the thickness of the log to be treated, the working area 35 substantially coincides with the blade element (6). ) in the region of movement in the direction of the log, and that the device comprises spring members (25) for pressing the blades (11) with a substantially constant force against the log. 8