FI90960C - An apparatus for unwinding a metallic, so-called packaging yarn from a yarn spool - Google Patents

Description

90960 i

Apparatus for unwinding a metallic so-called packaging yarn from a yarn spool 5

The present invention relates to a device as defined in the preamble of claim 1 for unwinding a packaging yarn from a yarn spool. The invention thus relates to the handling of heavy metal packaging wire spools, which are transported from the factory to the place of use so that the wire can be unwound from the spool on site and used for packaging objects, such as pulp bales. The main object of the invention is heavy coils weighing η. 1 ton and with a wire diameter of approx. 3 mm. The diameter of the coil 15 is η. 1 m, and the length of the coil is η. 1 m; the diameter of the cylindrical core of the spool is about 30 cm.

After manufacture, the coil is fastened with four straps and has so far been placed upright on a pallet for transport by truck or container. Upon arrival at the site, the pallet is moved with a transfer crane, forklift and / or pallet truck. The reels on the pallets are stored in the storage area from where they are retrieved if necessary, usually using a forklift, the forks of which are attached under the pallet. The pallet is then lowered onto a specially made washer comprising vertical sleeves for receiving a central column consisting of four tubes arranged in a quadrilateral pattern. This rod is filled 30 down into the core of the coil and the ends of the four tubes are attached to the sleeves by means of a quick connector to lock the tubes.

The special unwinding crown is manually raised to a height of about 2 meters and pushed down onto the column 35 while being guided along pipes which prevent the crown from rotating. He finally rests upstairs.

2 The strips that held the spool together are then cut open, after which the thread can be unwound with the crown guiding it.

5

The functions described above and the equipment used in connection with them have certain drawbacks. The use of pallets incurs additional costs because it is not economically viable to return to the yarn mill pallets of 10 pallets that have been used on long journeys between different countries. Pallets are scrapped, which leads to significant additional costs. In addition, pallets prevent the optimal use of the cargo space during transport, which in turn means correspondingly higher transport costs. 15 With a forklift, it is often difficult to get close when unloading a load from a transport vehicle and sometimes it is necessary to pull the pallet out with the spool standing on it, which sometimes causes the spool to fall off the pallet, which can be damaged if the wire is disordered.

The precise positioning of the pallet on the top of the special washer to be received by the column must be done in the right place above the sleeves which are to be connected to the ends of the column tubes. In other cases, this may be a time-consuming operation and may increase the working time available for processing.

Once the column is lowered into the core of the coil and attached to the washer 30, which can be quite a cumbersome procedure, the crown must finally be raised to a height of almost two meters before it can be lowered onto the end of a standing column. Since the crown weighs about 20 kg, the lifting operation is heavy work, which can lead to physical injury if it is not performed by sufficiently strong workers.

The working methods and equipment used so far are unsatisfactory, especially if the workers are women, 3,90960, as is increasingly the case in the industrial sectors concerned.

It is therefore an object of the invention to provide a device which eliminates the need for pallet pallets and by means of which the wire spool with its unwinding crowns can be placed in a working position on a vertical column quickly and without the need for heavy and dangerous lifting operations.

According to the invention, such a device is provided. The most important features of the device appear from the appended claim 1.

15

According to the invention, the wire spools are loaded horizontally for transport to the user, in which case they take up less cargo space than if they were transported on pallets in the usual way. The reels are held together in the usual way by 20 four fastening straps.

The coils are stored horizontally in the user's premises. They are retrieved from the storage area by a transfer crane, forklift or other lifting device which holds the reel in a horizontal position and transfers it to a device according to the invention, in the middle of which is a column which is turned down to a horizontal position. The coil is then moved to a position where it is centered with the column, so that it can be easily placed on top of the column. Finally, the ai-30 does not have much difficulty in raising the unwinding crown by about one meter until it is level with the horizontal column and moves the crown forward to the position against the coil.

These measures do not require slag, which would have to be scrapped by myS-hernm.

The column in the middle is then turned back to the vertical working position by means of hydraulic cylinders or pneumatic cylinders, after which the winding of the wire from the spool can be started. In order to prevent the unwinding crown from passing with the wire 5 and detaching from the column, the column according to a preferred embodiment of the invention is provided with a latch which prevents the crown from moving axially along the column.

These and other features and advantages of the invention will be explained in more detail below with reference to the accompanying drawings, in which a preferred embodiment of a device according to the invention is shown.

Figure 1 is a perspective view of an unwinding crown, a double conical wire cage with four guide arms at the top and bottom.

FIG.

Fig. 3 is a schematic side view showing how the horizontal wire spool is placed on a horizontal center column, after which this turn-30 is generally left in a vertical position.

Figure 4 is a schematic top view with the pyll in a vertical position.

Fig. 5 shows a separate view of the column seen from above in its vertical position, enlarged and provided with a locking device in the device according to the invention.

90960 5

Fig. 6 shows a section through the locking device of the device according to the invention in its neutral position with the locking arms retracted.

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Fig. 7 shows the same section as in Fig. 6 along the line 7-7 of Fig. 5, in which the locking arms are turned out to the locking position.

The method according to the invention is briefly described above and defined in more detail in claim 1, for which reason the following description is mainly directed to a preferred application of the device according to the invention.

As can be seen in Figure 2, a transverse base 12 with a vertical pivot arm 14 (Fig. 3) at the end of which is pivotally mounted at the top of two concentric tan sizes 16 supported by a frame 16 is supported by a central post 10 in the middle. ponenttia 18.

On top of the base is a base ring 20 which acts as a base for a vertical spool of yarn 22 of packaging yarn 24 to be unwound by pulling the yarn upwards and winding it open round by turn.

To guide the wire during unwinding, an unwinding crown 26 is placed on top of the column, which rests on top of the spool 22. The crown has the shape shown in Fig. 1 and is provided with four upper control arms 28 and four lower control arms 30.

The column 10 consists of a square tube 32 with four diagonal, protruding longitudinal flanges 34 at the corners to form a four-to-35 longitudinal guide groove 36. When the spool 22 is placed on top of the column 10, the arms 28, 30 are guided in the guide grooves 36 between the flanges so as to prevent the spool 6 from rotating during unwinding.

The crown is double conical and implemented as a wire cage comprising an outer ring 40 which guides the wire during unwinding. It also comprises elastic stems forming outwardly directed arms 42 which must be guided aside by the yarn during unwinding. This provides a certain braking effect so that the wire does not twist.

10

In Fig. 3, dotted lines are used to show the column 10 turned down to a horizontal plane, in which a horizontal spool 22Ά is supported by a fork-lift fork 45A or a so-called center fork 45B of a fork-lift truck, or a loop 45C siirtonostu-variant. The horizontal coil 22a is held flush with the horizontal column 10 and transferred to it.

Thereafter, the crown 26 is lifted until it is flush with the horizontal column 10 and is filled thereon and secured by a latch mechanism as described below. Finally, the column is turned upwards to a vertical position by means of two hydraulic or pneumatic cylinders 44 up to the position shown in Fig. 2, in which the coil 22 is in its vertical position together with the crown.

The four fastening straps (not shown here) are cut off, leaving the spool ready to be unwound.

As shown in Figures 5-7, the post 10 is provided with an up-and-over latch mechanism 46 comprising two pivotable locking arms 48, 50 which can be retracted 35 to a neutral position in two rectangular openings 52, 54 in opposite walls 56, 58 (58). 6, and which can be pivoted out to the locked position according to Fig. 7 when they are intended to prevent the crown from being inadvertently pulled up if the wire twists and becomes entangled in the crown during unwinding. In this way, the crown is prevented from coming off the column and possibly causing damage or injury.

Each locking arm consists of a sheet metal arm bent into an L-shape with a long leg 10 60 and a short leg 62 with a downwardly turned edge 64 at the inside. Two arms 66 are mounted on the inside of the long leg by welding, each mounted to a shaft 68 fixed between the walls of the four-tube tube.

15

The extension arms 70 and 72 are welded to the top of the arms 66. The arms 70, 72 of the two locking arms can be turned past each other as shown in Fig. 7.

The inner edges of these extension arms are shaped to be slotted by cam surfaces 74 and 76 in communication with a cylinder 78 supported by an articulated arm 80 in a locking body, the cylinder and the articulated arm being pivotally connected at an articulated arm 82 pivotally supported.

The compression spring 86 is kept tensioned between the locking arms 48, 50.

When the locking arms are in their extended position as shown in Fig. 7, the spring 86 holds them in this position, which can be determined so that the lower edges 64 come into contact with the lower edges of the openings 52, 54. The drive arm 82 is retracted to a position above the top 25 of the column while the cylinder 78 is moved to its free position. Instead of the edges 82 forming a stop, the arms 70, 72 may be brought into contact with the cylinder 78 when the locking arms are fully folded out, with the protrusion being limited by the cylinder 78. The end position of the operating arm in Figure 7 is limited by the shoulders 86A. on the inside of the tube 32.

5

When the wire spool and the unwinding crown are pushed over the center column in this lowered horizontal position as shown in Fig. 3, the operating arm 82 is in its extended position and the locking arms are retracted in the lower position, as shown in Fig. 6 in the neutral position.

Before the column 10 is turned up from its horizontal position, the arm 82 is moved to the locking position of Fig. 7, when the shape of the cam surfaces 74, 76 is such that the cylinder 78 can be disengaged relatively easily, i.e. the manual force of the operating arm is relatively small. when the drive arm is to be pivoted out of the position shown in Fig. 7 while the cylinder is to be pressed against the cam surfaces 74, 76, causing the locking arms to pivot against the action of the spring 86 in the neutral position of Fig. 6.

Figure 7 shows how the short arms 62 of the locking arms form shoulders on top of the unwind crown.

Thus, the locking device is simple to implement, reliable and practical to use.

30

As can be seen from the above description, the wire spool 22A can be handled without a pallet. The spool can be handled during loading and unloading by rotating along that ground. The horizontal coil can be easily moved to the correct position for placement on the horizontal column. The crown must be raised high enough to be pushed onto a horizontal column, which 90960 9 is then turned up to its working position by means of a hydraulic or pneumatic cylinder in which the crown is not locked, so that the crown is not locked.

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Claims (2)

1. Device for unwinding a so-called This year, metal sheep packing wire from a wire reel (22) reaches a vertical position around a vertical center post (10), which is pivotally stored for folding to a horizontal position for receiving the wire roll upon mounting it on the post and a satisfactory folding of the post to the vertical deflection flange of the roll, and the roll at its upper breath produces a deflection crown (26) around the post, the post being formed by a square tube (32) with diagonally extending longitudinal flanges (34) to form four longitudinal grooves , in which the crown engages with upper and lower guide arms which, by cooperating with the groove walls, prevent rotation of the crown relative to the post when the thread slides along an outer ring of the crown which guides the thread during its unwinding turns after turning from the roll at the thread's pull upwards, characterized by the fact that in two opposite walls (56, 58) of the rudder, two substantial a rectangular aperture (52, 54) causes the deposition of two pivotally mounted track arms (48, 50) from a neutral gate, in which they are substantially recessed into the apertures and permits free passage of the wire roll (22) in both directions, to a a rolled-out gate, in which they are arranged to prevent the crown (26) from being pulled from the post, that at the upper breath of the post, a maneuvering arm (82) is located, which in a folded-in position lies above the open breath of the post and via a link ( 80) holds a groove member (78) cooperating with the arms in a position which permits the folding of the arms to their groove position under the influence of a compression spring (86) interposed by the arms, and that folding of the control arm causes the groove member to force the groove arms to be retracted. . 2. Device according to claim 1, characterized in that each of the groove arms (48, 50) is emitted by a substantially L-shaped plate arm, the long shank of spring (60) in the neutral position 10 of the groove arm is substantially recessed into the opening in the rudder's wall and extends at its lower breath. in the shorter shank (62), and that at the upper breath of the long shank is provided an arm (70, 76) which, at its upper breath, has a cam surface abutting against the groove member (78), that the groove member is constituted by a transverse one, substantially cylindrical groove body supported by the lever-linked linkage (80), and the folding of the groove arm (82) and the raised lifting of the groove body allows it to interact with the cam surfaces and foil the grooves against the action of the spring to the nut. .