FI68030C - IMPLEMENTATION OF CUSHION EQUIPMENT AND ETCATION EQUIPMENT FOR VIRKESTYCKEN - Google Patents

Description

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• C (45) J i .1 1. jt .., .3 (51) Kv.ik. * / Int.ci. «B 65 G ^ 7/24 FINLAND —FINLAND (21) Patent application - Patenttnsölcnlng 793329 (22 ) Hakemlspilvi - Ansöknlngjdag 25.10.79 (^) (23) AlkupUvi - Glltigh «tsdag 25.10.79 (41) Become public - Bllvlt offentllg 26.04.80

National Board of Patents and Registration Date of sight and publication. -

Patent- oeh registerstyrelsen '' Ansttkan utlagd och utl.skriften publics rad 29.03.85 (32) (33) (31) Privilege claimed - Begird prlorltet 25.10.78 Sweden-Sweden (SE) 7S11091 “3 (71) Renholmens Mekaniska Verkstad AB , Fack, S-930 kl Byske, Sweden-Sverige (SE) (72) Erland Marklund, Skellefteä, Lars Ingvar Lindström, Byske, Sweden-Sverige (SE) (7 * 0 Oy Kolster Ab (5 **) in the control system, a turning device in the control head 1 la - Vändanordning vid justerplats i ett justerverk för virke- stycken

The present invention relates to a turning device at a control point in a timber piece control apparatus, through which the timber pieces are adapted to be fed in pieces perpendicular to their longitudinal direction to turn each piece of timber passing through the adjustment point. is adapted as a one-piece feeder for use with a conveyor equipped with grippers and preferably in a single layer in connection with a stack of timber pieces placed side by side against the stopper, and the turning means comprises a pivot arm movable in a first position between the second position, which is the second position intended u for handing over the piece of timber 68030 that was gripped in the first position.

To turn the pieces of timber, there are previously known devices comprising arms rotatable about an axis of rotation, which at their end remote from the axis of rotation support pivoting loops which are moved during rotation of the arms around the axis of rotation by a fixed chjaus cam plate to turn the piece of timber into which they are rotated. An example of such a device is disclosed in Swedish Patent Publication 7,011,917-7 (379,521).

However, these known turning devices are complex in structure and thus expensive, and since the turning loops are adapted to rotate about the drive shaft, they require a relatively high construction height, which to some extent limits the usefulness of these known turning devices. Another disadvantage of these known devices is that they cannot be used simultaneously as a piece feeder.

It is therefore an object of the present invention to provide a device for turning timber pieces at an adjustment point which does not have the above-mentioned disadvantages and which at the same time is such that it can be used as a piece feeder.

This object is achieved in that the invention has the features given in the claims.

The invention will now be described in more detail with reference to the accompanying drawing, in which Figure 1 shows a plan view of a part of the adjustment position, Figure 2 shows on a larger scale a section mainly along line II-II in Figure 1, and Figure 3 shows on a larger scale a section mainly along line III-III in Figure 1.

The number 1 denotes in the drawing a sloping plane constructed as a roller track for supporting the storage of timber pieces 2, which is connected to a conveyor (not shown in the drawing) for bringing the timber pieces into storage perpendicular to the longitudinal direction of the timber pieces. On the inclined plane 1, pieces of timber are held by stop members 3 arranged at 4 on slidably supported arms 5, 3 68030 mounted at one end in slots 6 substantially parallel to the common and inclined plane 1 around a shaft 8 arranged on the machine base and rotated by a palm 7. Attached to this shaft are a plurality of gears 9 cooperating with racks 10 fixedly mounted on the stand as the shaft 8 rotates to move it together with the arms 5 to a position for adjusting the stop members 3 in view of the width of the pieces of timber in stock.

From the inclined plane 1, the pieces of wood are moved piece by piece to allow the pieces of wood to be pulled out into their longitudinally arranged roller stand 11 at the speed of the grippers of the chain conveyor 12 with grippers 13 and at the same time turning the pieces all this in order to allow the adjuster to inspect and evaluate each passing piece of timber on all sides at the adjustment site and then, on the basis of this assessment, make the final adjustment choice and then pull out the assessed piece of timber lying on the roller stand 11 along its length to reach the point of cutting; take place in line with a reference line passing through an adjusting saw not shown in the drawing,

In order to move the pieces of timber 2 while simultaneously turning them from the warehouse onto the roller stand 11, a piece-turning turning device is arranged between the inclined plane 1 and the roller stand 11, driven by a chain conveyor 12 which removes the turned, evaluated and possibly pulled piece of timber from the roller stand 11. In the embodiment shown in Figures 1-3, this turning device comprises a plurality of in-line pivot arms 15, each formed by a carrying surface 16 and a stop base 17 for receiving a piece of timber from storage and for carrying it during transfer to a roll stand 11.

Each such pivot arm 15 is supported between its ends by a freely pivotable pivot arm 19. This pivot arm is fixedly connected to a shaft 20 which supports a sprocket 21 included in a chain conveyor 12 and which is mounted by a bearing 22 on a box-like structural element 23. Since the pivot arm 19 is fixedly connected to the axle of the sprocket, rotates depending on the speed of the grippers of the chain conveyor and moves the pivot arm 15 along the closed, circular path of the supporting pin 18.

To guide the pivot arm 15, a guide arm 24 is provided articulated on the one hand to a machine base fixedly fitted with a pin 25, on the other hand to the pivot arm 15 via a pin 26 which must be spaced from a pivot arm pivot point 18 slightly larger than the shaft 20 and pivot the center distance between the pin 18. This guide arm guides the pivot arm 15 during the movement provided by the pivot arm 19 in such a way that its bearing surface 16 is moved in solid lines from the position shown in Fig. 2 above the inclined plane 1, gripping the timber piece 2 and then bypassing the inclined space II. when the accompanying piece of timber is lowered aside on the roller stand 11 to give an extra impetus to the piece of timber thus counted so that it is sure to turn to the other side.

After the pivot arm 15 with its bearing surfaces 16 has passed the position marked II, it is pivoted in the opposite direction and quickly brought down below the level of the chain conveyor and back to the starting position shown by solid lines. The arm 24 guides the pivot arm 15 approximately so that the outermost point 28 of its bearing surface 16 moves along a continuous and solid line 29 along a path not shown below the horizontal plane passing through the center of the pivot drive shaft 20 in the embodiment shown in Figures 1-3. the joining point 26 of the guide arm moves along an arcuate path 30 with the point 25 as the center, the path of which must pass the vertical plane 31 passing through the center of the shaft 20 so that the turning movement of the timber piece in position II becomes just large enough for the timber piece to turn to one side.

Although not shown in the drawing, a fixed pivot cam can be used to ensure that each piece of wood, after being placed on the roller stand 11, is brought into the required pivoting motion.

5,68030

In the embodiment shown in Figures 1-3, it is per se possible to arrange instead of a guide joint 24 a fixed guide track for the pivot arm 15 pin 26, which guide track may have the dimension indicated by line 30 in Figure 2 or the dimension indicated by line 31 in Figure 2, but less preferred or different from line 31 in Figure 2 and the dimension below the horizontal plane passing through the center of the drive shaft 20.

The present invention is not limited to what has been described above and shown in the drawing, but can be varied and modified in many different ways within the spirit of the invention indicated in the claims.

Claims (4)

68030 A pivoting device at a control point in a timber piece control apparatus, through which the timber pieces (2) are adapted to be fed in pieces perpendicular to their longitudinal direction to turn each piece of timber passing through the adjustment point, the control point , wherein for turning the pieces of timber piece by piece through the adjustment point, the turning device is adapted to be used as a one-piece feeding device for the conveyor (12) with grippers (13) and preferably in a single layer adjacent to the stop (3), the turning device comprises a turning device (15), which moves between a first position in which its bearing surface is adapted from below to grip a piece of timber in the warehouse against the stop (3) and a second position, which The position is intended for the delivery of the piece of timber gripped in the first position, characterized in that the pivot arm (15) is pivotable between its ends around a first point (18) running in a circular path and is at a second point (26) located at the first point. on the opposite side to the pivot arm bearing surface (16), guided by a path (30) extending such that the first point (18) as the pivot arm moves from the second position to the first passes through a line between the center of the circular path and the second point (26). A turning device according to claim 1, characterized in that the second point (26) is located at a distance from the first point (18) which is at least equal to and preferably slightly larger than the radius of the circular track. A turning device according to claim 1 or 2, characterized in that the turning arm (15) is guided at its second point (26) by an arcuate track (30) defined by a guide joint (24) pivotally mounted below the horizontal through the center of the circular track. Swivel device according to one of the preceding claims, characterized in that the swivel arm (15) is mounted at its first point by means of a pin (18) on a swivel arm (19) fixed to the second shaft (20) of the conveyor provided with grippers.