FI87338C - Apparatus for cutting and removing bales and ribbons of wires or ribbons - Google Patents

Description

1 87338

Equipment for cutting and removing the tying wire or strap of bales and packages. - Anordning för kapning och avlägsning av balars och pörpackningars bindeträdar eller -band.

The invention relates to an apparatus for cutting a tie wire or rim of relatively rigid material in bales and packages and for removing the cut wire or rim.

A relatively rigid material, usually a metallic binding wire or a binding strap, is often used to fasten and reinforce the various bales and packages, which is usually removed by manual cutting. This causes a considerable need for manual work and, in addition, the removal of the cut yarns is problematic due to their length and the ends that are arbitrarily stitched in different directions, causing e.g. the risk of injury. Post-processing or disposal of such long wires or rims in a recyclable form is also cumbersome, incurring additional costs. It is therefore an object of the invention to provide an apparatus for cutting the binding yarns or rims of various bales and packages and for removing the cut yarns, which apparatus enables an automatic cutting-out removal operation. In addition, the aim is to provide an apparatus which makes it possible to bring the yarns removed from the bales or packages into a shape which is easier to handle. To achieve this object, the apparatus according to the invention is characterized by the things set forth in the characterizing part of claim 1.

The main advantage of the present invention is the automation of the cumbersome and time-consuming work step and the conversion of the removed yarns into a safer and easier to handle shape, e.g. into short pieces, which can be e.g. in the order of 5 to 10 cm in length.

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The apparatus according to the present invention is intended in particular for cutting metal bonding wires or rims, but it is also suitable for cutting and removing other relatively rigid material, e.g. fiber-reinforced plastic bonding wires or rims.

This stiffness requirement is due to the fact that in this case the transfer of the yarn from the removal device to the post-processing device becomes relatively simple and, in addition, in the case of stringed tie wires or rims, problems such as those presented do not even occur.

Several different solutions for cutting packaging yarns and removing the cut yarn are already known in the art. For example, in the solution according to EP 0 195 471, the cut wire is removed by pulling the wire next to the cutting point by means of a pressure roller. This publication does not disclose or suggest an insertion blade according to the invention for collecting cut wires together and transferring them to post-processing. In the solution according to US 4,328,609, the cut wires are removed by means of a suction device. EP 0 240 289 discloses a solution in which a bonding wire is gripped between a guide plate and a guide roller, after which the bandage is broken and guided by rotating the guide roller. This publication does not disclose a stitch blade according to the present invention for collecting and transferring truncated yarns. FI 69994 presents solutions in which each wire requires its own cutting and collecting member, which must then be aligned with respect to the wire in question, causing an additional need for guidance. In the device according to the invention, the number of wires, which can be any desired, can be collected by one collecting member, the need for control of which is considerably less than in the device according to the reference publication in question. In addition, in the solution according to the FI publication, a separate placement place is arranged for the package, whereas in contrast the solution according to the invention is suitable for use in connection with existing conveyors.

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None of the above-mentioned prior art publications discloses a cutting blade according to the invention for assembling and transferring cut yarns for finishing, and bending means for bending the cut yarn into a substantially U-shaped loop, which is, however, necessary for successful finishing transport of yarns.

The device according to the present invention solves the problem of cutting and removing the binding wires in a relatively simple and inexpensive manner, eliminating the problems mentioned at the beginning.

The apparatus according to the invention is particularly well suited for cutting and removing metal binder wires or straps for pulp bales, but it can also be easily applied to cutting and removing other types of packaging or bale binder wires. In the case of pulp bales, the pulp sheets are usually arranged in a vertical position on the bales, transverse to the longitudinal direction of the bales, so that when moving the bales along their longitudinal path to the cutting and removing device according to the present invention somewhat inwards from the surface level of the pulp bales. In the case of pulp bales, the possible damage to the sheets does not cause any problems, since the sheets are intended to form a pulp.

In the case of packaging, the plug must be dimensioned in such a way that it cannot protrude into the packaging in such a way that the contents of the packaging are in danger of being damaged.

The invention will now be described with reference to the accompanying drawings, in which: 4 87338

Figure 1 shows a schematic side view of an embodiment of the apparatus according to the invention,

Fig. 2 shows the apparatus of Fig. 1 in a schematic plan view,

Figure 3 shows a detail of a cutting device according to the invention,

Figure 4 shows a detail of a discharge device according to the invention, and

Fig. 5 shows a section of the apparatus according to Fig. 1 along the line V-V.

According to the figures, the apparatus according to the invention comprises a cutting device 1 and an outlet device 2 and a post-processing device 3. The cutting device 1 comprises cutting means 6, preferably a scissor-type cutter, which can be arranged to rotate continuously or reciprocate. The cutting device further comprises control means for guiding the wire or rim to said cutting means. The guide means comprise a cam-like insert blade 5 with a guide surface 7a for guiding the wire or rim 12 around the bale or package outwards from the surface of the bale or package towards the cutting members 6 located at the end 7 away from the tip 7 of the guide surface 7a. The cutting members 6 with the guide members are preferably arranged to move back and forth along the column body 4, e.g. by means of a motor 22. In this case, the cutting of the wire or rim 12 is performed during the downward or upward movement of the cutting and guide members, depending on the direction of the tip 7 of the insertion blade 5. As the power unit of the cutting members 6, e.g., a hydraulic cylinder 21 can be used. In the embodiment shown, the discharge device 2 is located opposite the cutting device 1 8 87538, which discharge device 2 includes collecting and transporting members 8-11 of the cut wire or rim 12. The bale or package 13 is then arranged to pass between the cutting device 1 and the discharge device 2. The collecting members of the discharge device 2 comprise a piercing blade 8 provided with a collecting notch 10 which protrudes between the cut wire or rim 12 and the bale or package 13 on a side surface away from the cutting device 1 by guiding the wire or rim 12 arranged to pass through the sprockets or pulleys 14 in a circumferential path. By means of the tip 11 and the collecting door 10, the stabbing blade 8 collects all the cut wires around the bale 13 and removes them all at once around the bale or package. As the insertion blade 8 travels by the conveying chain or belt 9 through the bending member 36 in the discharge device 2, the wires or rims assembled in the notch 10 fold into a substantially U-shaped loop, the branches of which follow the insertion blade 8. Said bending member can be, for example, an opening 26 shown in Figures 1 and 2, which is formed in the base plate of the vertical housing part 27 above the bale or package 13. This folding of the wire or rim into a loop facilitates its transport by means of the plug blade 8. The cut wires or rims are conveyed by means of a stabbing blade 8 to a chute 24, which chute is formed horizontally in the upper part of the discharge device 2 according to Fig. 1. The trough 24 is formed in two parts according to Fig. 5. In this case, the plug blade 8 is arranged to run in the middle of the chute, whereby the branches of the wires or rims collected by the plug blade run in their own chute halves. Each gutter half is provided at its end remote from the cutting device 1 with a transfer roller 15, on which a branch of wire or rim in each gutter half rests as the insert blade 8 passes forward between the transfer rollers 15. The transfer rollers 15 are provided with side flanges 25 to prevent the wires or rims from moving laterally off the top of the rollers. Above the transfer rollers, pressure rollers 16 are arranged, which are transferred to engage with the cut yarns or rim arms 12, whereby the cut yarns or rims can be pushed forward by means of rotating transfer rollers 15 into a post-processing device 3 connected to the discharge device 2. to the level of the upper part of the discharge device 2, behind the chute 24 by means of a support 28, communicating with the chute 24 via a conical part 17. The conical part 17 acts as a guide member for guiding the protruding wires or hoops into the device 3. In the post-processing device 3, the cut wires or hoops pass between the rollers 18 to a shredder 19 which splits the wires or hoops into pieces 12a of suitable length. From the shredder 19, said pieces 12a are preferably dropped into the collecting tank 20 for further processing.

In some cases, different cutting saws could be used as the cutter 6, but especially in the case of pulp bales, the problem would be to get the metal chips into the pulp mass, which is why a cutter-type cutting device must be used in these cases.

The foregoing embodiment is intended only to illustrate a preferred embodiment of the invention, and many details thereof may be modified without departing significantly from the scope of the appended claims.

For example, the cutting device 1 and the removal device 2 may be located at an angle of about 90 ° to each other so that when the bale or package 13 is moved to a corner formed by the cutting device 1 and the removal device 2, the cutting blade 1 cuts the bale or bundles of wires or packages around the bale or package. on the side surface when the plug blade 8 of the discharge device 2 performs the collection and removal of the wires or rims along a vertical end surface at an angle of 90 ° to said vertical side surface. In addition, the cutting device 1 and the discharge device 2 can be arranged side by side so that the movements of the cutting device insert blade 5 and the removal device insert blade 8 take place in substantially parallel planes along the same vertical side surface of the bale or package. This solution requires a relatively long bale or package which allows the inserts 5 and 8 to be placed far enough apart to allow the wire or rim to be folded into a U-loop and thus the wire or rim to be pulled away from the bale or package. If the cutting device 1 and the removal device 2 have to be placed side by side so that the inserts 5 and 8 come relatively close to each other, the insertion blade 8 can in principle also be replaced by a suitable gripping member which is pressed around the wire or rim. However, this is a less advantageous solution than the use of the inserted insert blade 8 due to the fact that the free end of the wire or rim has to rotate around the entire bale before entering the removal device and there is a risk of the free end adhering to the bale or package.

Claims (6)

8 87338 An apparatus for cutting a bandage (s) (tie wire or strap) (12) of relatively rigid material on bales and packages (13) and for removing the severed bandage (s), the apparatus comprising: a cutting device (1) comprising cutting means (6) and guide means (5,7,7a) for guiding the severable bandage (12) on the cutting means; and a discharge device (2) comprising collection and removal means (8) for the severed bandage (s) (12), characterized in that the collection means of the discharge device (2) comprise a plug blade (8) with a collection opening (10), the tip part (11) of which protrudes between the severed bandage (12) and the bale or package (13) by guiding the bandage (12) into the collection opening (10); that the puncture blade (8) is attached (23) to the endless conveyor chain or belt (9) by transporting the severed bandage (s) (12) away from the bale or package (13) and that the removal device (2) further has means (26) for forming the puncture blade (8) ) to the bandage (s) (12) by a substantially U-shaped loop, the branches of which follow the insertion blade (8). Apparatus according to claim 1, characterized in that the apparatus further comprises a post-processing device (3) associated with the removal device (2) in order to make the removed ties (12) easier to handle. Apparatus according to claim 2, characterized in that the post-processing device (3) comprises a shredder (19) which breaks the bandage (12) into smaller pieces (12a). Apparatus according to one of Claims 2 to 3, characterized in that the discharge device (2) comprises a chute (24) formed at the top thereof, into which the bandage (12) cut into the chute is conveyed by means of a plug blade (8); that the post-treatment device (3) is connected to the discharge device (2) at its upper level 9 87358 at an end remote from the cutting device (1) of the discharge device (2), the post-processing device (3) communicating with the chute (24) via a conical part (17); that the trough (24) is provided at its end on the side of the post-processing device (3) with rotating transfer rollers (15) on which the bandage (12) is transferred and pressure rollers (16) above the transfer rollers (15) which can be placed against the transfer rollers so that the bandage (12) is positioned between the transfer and pressure rollers, whereby the bandage (12) can be pushed forward from the plug blade (8) by means of the transfer rollers (15) via the conical part (17) to the finishing device (3). Apparatus according to one of Claims 1 to 4, characterized in that the cutting device (1) and the discharge device (2) are located opposite one another, the bale or package (13) being arranged to pass between the cutting device (1) and the discharge device (2). Apparatus according to one of Claims 1 to 4, characterized in that the cutting device (1) and the discharge device (2) are located at a substantially 90 ° angle to one another so that the cutting blade (5) of the cutting device (1) moves between the cutting device (1) and the discharge device (2). ) to form a bale or package introduced into a corner on one vertical side surface as the insertion blade (8) of the discharge device (2) moves along a vertical end surface substantially at an angle of 90 ° to said side surface. 10 8 7 338