DE8506907U1 - Device for processing the ends of round timber - Google Patents

Description

¹ * ·· ·· II ' III '

Device for processing the ends of round timber

The invention relates to a device for processing the ends of round timbers with the generic features according to the preamble of claim 1.

In a known arrangement (DE-OS 30 26 580)

the processing station a clamping device made of pairs of pris

matically profiled clamping jaws for individual round logs are provided, which clamp the round log at the processing station while relieving the conveyor, so that the processing tool can be moved against the round log. The processing depth is sensed on the round log. A consistent dimensional accuracy of several processed round logs cannot be achieved with this and is also not intended, because this device is primarily intended for the processing of more or less straight logs. The conveyor consists of

Ii ·t ■· ilia»

-Z-

/&igr; from two conveyor chains running parallel to each other,

e which each have a driver, so that the wood on the

Trunk at two locations of two different conveyor

medium is collected and transported. A uniform

! 5 parallel position of the logs on the conveyor can therefore not be achieved, just as an equal

Zero position of all logs before the processing station. For the processing of logs of shorter lengths and for the processing of logs at both ends, especially in larger quantities, these well-known

Devices are not economically viable \) suitable for processing the ends of round timber

! are rotating edge milling cutters, rotating cutter heads

with different profiles. 15

It is the object of the invention to provide a device with the \ generic characteristics in such a way that the

Round timbers in front of the processing station in a pre-

' given, consistently aligned zero position with one-

can be held securely using simple means in order to be able to process larger quantities in a shorter time at one or both ends.

, \ This task is achieved according to the invention by training

which has the features according to the characterising part of claim 1.

The support troughs that hold the logs individually are aligned parallel to each other in their 90° transverse position to the conveying direction and provide a secure support for the individual log in the support trough, which can be pressed into the support trough from above by a stamp to ensure secure support of the log on the processing tools.

The round wood finds its way through its

• · · t &igr; ·

• - ·- · - ·» «till

Its own weight creates a fixed, immovable support position across its length, but it can be moved lengthwise in the trough for alignment purposes without losing its fixed support position. In conjunction with other design features, this support of the round timber in support troughs enables rapid alignment movements in the lengthwise direction of the round timber to one side or the other, so that processing can be carried out on one or both ends of the round timber, one after the other. Fixed stops and simple displacement devices for the round timber in the support trough are sufficient for this alignment movement. The processing tools used are mainly rotating cutter heads for chamfering, pointing, bevelling or the like. A particular advantage of using these support troughs is that they can be formed in a simple way using angle profiles, the open profile side of which is directed upwards and the apex side downwards. These with

Conveyor chains connected to the support troughs

Angle profiles can be locked to the fixed frame of the conveyor in the processing position. Movable pins on one part and fixed eyes on the other part are suitable as locking means, into which the pins engage in the locking position. Conical pins are preferred, which can be moved in guides by means of a piston-cylinder unit on the frame, and correspondingly shaped eyes on the angle profiles. Finally, a particular advantage of the design according to the invention is that all movements are relatively straight over short distances, so that a rapid sequence of the individual movement stages is possible during processing. This sequence can be controlled by an electrical work cycle control, whereby the conveyor can only be transported when the stamps for holding the

• ti· · r * ti«

Round timber in the support troughs as well as the transport means for the longitudinal transport of the timber in the support troughs and vice versa, a movement of the stamps and these latter transport means is only possible when the conveyor is at rest.

An embodiment of the invention is shown schematically in the drawing. For the sake of clarity, some components have been omitted. They show:

Figure 1 is a plan view of the device according to the invention,

Figure 2 is a section along the line A-A of Figure 1, 15

Figure 3 is a section along the line B-B in Figure 1,

but with a distorted scale and Figure 4 a cross-section of the arrangement according to Figure

In a frame 1 made of stable supports, crossbeams and columns, deflections 2 and 3 for two conveyor chains 4 and 5 running parallel to each other are mounted, which are shown Y in the drawing with dotted lines.

Plate chains are suitable, but also

Link chains or similar with constant spacing

Support troughs 6 with prismatic cross-sectional profiling are arranged on the conveyor chains 4 and 5. In the example, these support troughs consist of angle profiles with the open profile side facing upwards. The angle profiles bridge the distance between the two conveyor chains 4 and 5 and are firmly connected to both conveyor chains on the one hand, but on the other hand in such a way that they can run safely over the deflections 2 and 3. The angle profiles of the

Support troughs 6 hold the logs 7 to be processed

as shown in Figure 1. The round timbers 7 are fed to one deflection 2 and delivered again to the other deflection 3. To the side of the conveyor, in the grid of the center distance of the support troughs 6, there are fixed

Stops 8 and 9 as well as rotating tool heads 10 and 11 with their drives are arranged. Both the stops 8 and 9 and the tool heads 10 and 11 are vertically and horizontally adjustable. Above the conveyor in the area of the processing tools there are vertically movable stamps 12 as hold-down devices for the round wood in the support trough before the processing

tool. In the area of the stops 8 and 9, extendable drivers 13 are located above the conveyor, which are movable across the conveying direction over the support troughs 6. Piston-cylinder units with pressure medium are suitable for the vertical movements of the stamps and the drivers 13. A chain conveyor 14 is shown in Figure 2 of the drawing for the movement of the drivers 13 in the longitudinal direction of the support troughs 6. For locking with the frame 1, the angle profile of each support trough C is firmly connected on the underside with two conical eyes 15 ( '.). In the area of the processing tools 10 and

11 are located on the frame 1 by means of a piston-cylinder unit 16 movable conical pins 17, the shape of which corresponds to the shape of the eyes 15. To lock the support trough 6, the pins 17 are moved into the eyes 15 by means of the piston-cylinder unit 16, so that the support trough 6 and the frame 1 are firmly locked together. An advantageous electrical control ensures that movement of the conveyor chains 4 and 5 is only possible when the pistons 12, the drivers and the locking pins 17 are in the rest position. On the other hand, the conveyor is at rest when the movement

»•••••III ······ It·«·

6 -

for the stamps 12, the drivers 13 and the locking pins 17 is released.

The round timbers 7 to be processed are fed into the area of the deflection 2 in the direction of the arrow. The processing tool 10 is assigned the fixed stop 8 and a carrier 13 to this. The carrier conveys the round timber to be processed against the fixed stop 8 so that its processing position is fixed in front of the processing tool 10. In the next work ) The conveyor moves around the center distance

two support troughs 6 from each other, so that the round wood is now aligned in front of the processing tool and this can be moved against the facing front end of the round wood in order to carry out a corresponding processing, e.g. chamfering. In the embodiment, the fixed stop 9 is assigned to a processing tool arranged on the opposite side of the conveyor and a further driver is assigned to this. After the next conveyor cycle, the extended driver 13 moves the round wood against the fixed stop 9 on the side opposite the stop 8, so that the round wood is now aligned for processing the opposite end and can be processed, e.g. pointed, by the processing tool after the next conveyor cycle. In the processing position, the round wood is held in the trough by the lowered stamps 12. From the embodiment it can be seen that the

Type of support of the logs in the troughs 6 and

The round logs are held in the troughs 6 by vertically movable stamps in front of the processing tools, so that even extremely short round logs can be securely held and processed. In any case, processing takes place to the side of the troughs so that the processing tools are not obstructed by the clamping and support devices.

Claims (10)

»Iff »I · ··· Device for processing the ends of round timber 1. Device for processing the ends of round timbers, in which driven processing tools and stops for aligning the processing position of the round timbers are arranged laterally next to a conveyor with rotating traction means, characterized in that support troughs (6) extending transversely to the conveying direction and each receiving a round timber (7) are attached to the traction means (4, 5) of the conveyor, which have two support surfaces enclosing an angle with one another for the round timber. 2. Device according to claim 1, characterized in that the support troughs (6) are formed by angle profiles, the open profile side of which is directed upwards. 15 &igr;»■ · · -Z- 3. Device according to claims 1 and 2, characterized in that vertically movable stamps (12) are arranged as hold-down devices at the processing positions above the conveyor. 4. Device according to claims 1 to 3, characterized in that processing tool heads (10, 11) are arranged on both sides next to the conveyor in the grid of the trough center distance offset from one another in the conveying direction. 5. Device according to claims 1 to 4, characterized characterized in that stops for aligning the round timbers in the processing position are provided next to the conveyor and above the conveyor in the transverse direction next to the stops there are traction means for moving the round timbers in the longitudinal direction of a support trough against one of the stops. 6. Device according to claims 1 to 5, characterized characterized in that the stops (8, 9) and the processing tools (10, 11) are arranged offset from one another in the grid of the distance between the centers of the support troughs (6). 25 7. Device according to one or more of the claims 1 to 6, characterized in that the support troughs (6) can be firmly locked to the fixed frame (1) of the conveyor at the processing positions. 30 8. Device according to claim 7, characterized in that the means for fixed locking consist of movable pins (17) of one part and fixed eyes (15) of the other part, into which the pins (17) in the Engage in locking position. ••fr··· . >·* &igr; * · ·· »I It il 1 9. Device according to claim 8, characterized by 7 conical pins (17) and correspondingly shaped Eyes (15), the pins being axially displaceable on the ; Frame (1) guided and with a piston cylinder insert 5 unit (16). 10. Device according to claims 1 to 9, characterized by an electrical work cycle control J ₁ for transport of the conveyor in the rest position of the ^[ 10 stamps (12; and the transport means (13) for the ij , round wood displacement in the longitudinal direction of the support troughs (6) and vice versa for the movement of the pistons (12) and the transport means (13) in the rest position of the conveyor.
15