FI67315B - SAETT OCH ANORDNING FOER MATNING AV VANKANTADE BRAEDOR TILL ET KANTVERK - Google Patents

Description

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Sweden-Sweden (SE) 7801850-4 (71) Kockums Industri AB, Box 506, S-826 01 Söderhamn 1, Sweden-Sweden (SE) (72) Erik Gunnar Fornell, Söderhamn, Hans Göran Urban Eklund, Söderhamn,

Ruotsi-Sver ige (SE) (7 * 0 Berggren Oy Ab (5 * 0 Method and apparatus for feeding low-edged boards to an edging saw

The present invention relates to a feeding method for edging saws of the type set out in principle in the species definition of claim 1, as well as to an apparatus for applying this method.

The object of the invention has been to provide a feeding method of the said type, which enables greater accuracy than previously known feeding methods, while at the same time providing certain safety measures with a view to use.

For said purpose, the method and the device according to the invention are implemented in a manner which is in principle set out in the characterizing part of claims 1 and 4.

The invention will be explained in more detail below with reference to the accompanying drawings.

Figure 1 shows a perspective view of a feed device according to the invention, chosen as an embodiment, which is used in conjunction with a schematically shown edging saw.

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Figure 2 is a schematic end view of the device viewed in the direction of arrow A of Figure 1 in the direction.

Figures 3-5 show the part of the feeder in successive stages of the feeding process.

Figure 6 shows the end of the board during feeding to the edging saw.

Figure 7 shows very schematically the structure of the centering device.

Fig. 1 schematically shows a cross conveyor, generally indicated by the number 10, which in this case comprises six parallel, endless conveyor belts 11, on the upper parts of which undersided boards are fed in their transverse direction. Suitably, the cross conveyor 10 may be provided at its inlet and outlet ends with stop means (not shown) in the drawing for adjusting the transport of the boards so that the boards are let forward one at a time.

During its transverse conveyor, each board, such as the board 12 of Fig. 2, is measured in a manner known per se at several points along the board length, namely only by means of a schematically shown measuring device 13 whose signals are fed to suitable computer equipment to determine the optimal yield of each board.

After the measurement, the boards are further conveyed to the straightening and input track generally indicated by the number 14 in Figures 1-5.

This includes receiving slide rails, generally designated 15, 16, a longitudinal conveyor, generally designated 17, centering and alignment devices, generally designated 18, 19, and compression rollers, generally designated 20, and the like.

The device shown with reference to the drawings operates as follows.

After the boards have first been measured by the measuring device 13, the necessary optimization has been performed and the control data stored in the computer, the board 12 is fed transversely down the transverse conveyor 10 onto receiving slides 15 which can currently be in the inclined receiving position according to Fig. 3 but immediately placed horizontally. 16 levels.

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With the positioning and centering devices, the board is adjusted so that an optimal yield is obtained in the edging, whereby the positioning is, of course, performed according to the data stored in the computer, Fig. 4.

When the alignment and centering is completed, the alignment and centering devices 18, 19 move to the side (Fig. 5) and the slide rails 15, 16 are brought down and to the sides so that the board can rest on the conveyor 17, which is accelerated in a controlled manner so that the board is fed into the edging saw. , generally designated 21, Figure 1.

Figure 7 shows that the positioning devices generally indicated by the numbers 18 and 19 include forks 22, 23 moving towards and away from the board, each of which pivots about a vertical bearing pin 24, 25. The inner fork ends of each fork 22, 23 have either jaws directly adjacent to the edges of the board during the centering movement, or the inner ends of the fork arms are in turn provided with pivotally mounted bogie bridges 26, 27 which may have jaws abutting the edges of the board. The purpose of the embodiment described with reference to Fig. 7 is that the arrangements of the centering devices 18, 19 hitting the edges of the board, depending on the control pulses from the computer, but which may be slightly different from the actual measuring point, are as independent as possible of locally possible irregularities such as protrusions. .

In the case shown, the positioning and centering devices 18, 19 are assumed to protrude upwards from the components below. However, the opposite space is possible, in which case the positioning and centering devices 18, 19 would protrude downwards from the guiding and operating components, which are located in a plane above the level of the boards and are thus better protected against soiling.

It should be noted that the positioning and centering devices 18, 19 are preferably adapted, in accordance with the program entered into the computer, first to center the non-edged board with respect to the longitudinal center plane passing through the edging saw 21 and then (possibly simultaneously) to provide center shift. In this case, the board 1 '--- 4 6731 5 can be turned and at the same time ensure the possibility of continuing production even if the measuring system ceases to function. This is made possible by the fact that the lateral displacement can then be "reset" manually or automatically.

Claims (4)

6731 5 5 A method for feeding low-edged boards to a edging saw, wherein the boards (12) are measured during cross-conveyance by a cross-conveyor (10) and the obtained measurement values are processed on a computer to enable optimal yield in the edging saw. after which they are fed longitudinally through the edging saw, characterized in that the non-edged boards (12) are fed away from the cross conveyor (10) onto the laterally displaceable sliding rails (15, 16) or sliding planes and rested thereon during straightening and centering, the slide rails are moved to the side when the board in question is placed on the longitudinal conveyor (17) for feeding to the edging saw. A method according to claim 1, characterized in that the cross conveyor (10) is kept substantially stationary when the boards (12) are placed on it, after which it is accelerated in a controlled manner. Method according to Claim 1 or 2, characterized in that the boards (12) are fed out of the edging saw onto a receiving discharge conveyor on which they are guided in such a way that they cannot move laterally. Apparatus for feeding non-edged boards by a method according to any one of the preceding claims, comprising: a cross conveyor (10) for feeding non-edged boards (12), a measuring device (13) for measuring boards to optimize edging saw yield and the necessary computer, centering and positioning equipment to allow an arrangement according to the measured values and an feed path (14) for feeding low-edged boards in their longitudinal direction to the edging saw, characterized by Liu blades or planes (15, 16) arranged in connection with the cross conveyor (10) forming part of the feed track (12) against the cross conveyor (10) so that they rest on them during positioning and centering, and for means for moving the slide rails to the side after positioning and centering of the respective board (12) so that said board is placed on the longitudinal conveyor (17) arten. 6 6731 5