FI59965B - FOERFARANDE VID EMBALLERING AV ARTIKLAR T EX VIRKESPAKET ELLER LIKNANDE JAEMTE ANLAEGGNING FOER ATT GENOMFOERA FOERFARANDET - Google Patents

Description

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Patent · och registerstyrelsen '1 AntMun utli * d och utUkrifcM pubik «r * d 31.07.81 (32) (33) (31) Pyydetty« uoUcMi-feiinl priority 20.02.76

Sweden- Sverige (SE) 7602012-2 (71) Edvin Gardmo AB, Box 1 * 31, S-851 06 Sundsvall, Sweden-Sverige (SE) (72) Helmer Lage Norberg, Sundsbruk, Sweden-Sverige (SE) (7M Ruska & Co • (5I *) A method of coating goods, for example timber packages or the like, and an apparatus for carrying out the method - Förfarande vid emballering av artiklar, t.ex. socket package or other, for example, for the production of goods, e.g. or for coating other packages of wood products by means of a protective web of material, preferably paper and / or plastic, wound into a roll, the roll being fitted to a holder at a workstation above the article, where a piece of web suitable for the length of the article is unloaded and superimposed on the article. The invention relates to the application of the method to timber packages or other wood products, such as fibreboard, plywood a or similar packets.

In the past, equipment has been used to coat timber packages, referred to in professional circles as a coating equipment, which includes a load-bearing standing frame with two vertical, separate legs connected rigidly to each other at the top by a horizontal bridge between the legs and the bridge. fed to and past the coating protrusion after passing the previously combined compression and bonding process. A fixed holder is arranged on said bridge from above to receive the web of material web from above. This holder is simply formed by two separate upwardly open bases adapted to receive opposite ends of the rod or shaft on which the roller is supported.

In addition, two co-operating rollers are mounted on the bridge to discharge 2,59965 of the material web from the roll. Although such coating protrusions can do a perfectly good job, once they have been made to function properly, they have a number of serious drawbacks, which will be explained in more detail below.

The roll comprising the web of material is relatively heavy. In practice, it can weigh up to 1000 kg. This means that the roller must be mechanically lifted and brought over the bridge and then lowered into a holder above the bridge, which is usually done by a running cat fitted under the roof of the building in which the paving equipment is located. An inspection of the building in question shows that in most cases the height of its roof is determined by the paving equipment, as this, together with the necessary air space, muddles the highest point of the building. Thus, it has been found that the height of the roof required for the main coating equipment can be 1 to 1.5 m higher than is otherwise required for other equipment or stations in the building. What this means in practice in the construction and operation economy in question, especially in the energy economy, becomes clear when you consider that the surface of a building can rise up to thousands of square meters. Another disadvantage of the above-mentioned coating equipment is the fact that the machine operator operating the equipment is forced to climb the bridge every time the roll is placed in the holder. This must be done because the front end of the web, i.e. the free end, must be fitted manually between the two feed rollers, which are arranged in place at a small distance from each other suitable for the bridge. This work is, on the one hand, time-consuming and laborious and, on the other hand, involves certain accident hazards for the machine operator.

The object of the present invention is to eliminate the above-mentioned drawbacks and to provide the conditions for lowering the required roof height, which means a considerable simplification of the maintenance of the equipment when changing the roller.

According to the invention, this is achieved by lowering the holder when changing the roll to a remote, preferably near or adjacent, base, where the unused roll is fitted to the holder, after which the holder is moved to the workstation unloading is effected by means of two cooperating feed rollers or units, one of which is mounted in the vicinity of the holder's workstation, while the operation is adapted to follow the holder, unloading at least a short portion of web passing between the two feed units when the other unit together with the holder is in said charging station so that the ralna automatically grips or engages between the feed rollers when the holder and its feed unit are moved to the workstation.

With reference to the accompanying drawings, a more detailed description of, for example, a selected embodiment of the invention follows. In the drawings 3 59965, Fig. 1 shows a side view of a flat system according to the invention, in which the roll holders are shown in the above-mentioned resting or charging position, Fig. 2 also shows a side view of roll holders in workstations, Fig. 3 shows a vertical section of the holder In the state of the cutter for cutting the web of material fed from the roll, Fig. 1 »shows a top view of a detail of the holder and its lifting and lowering mechanism, and Fig. 5 shows a section similar to Fig. 3, but with the cutter in working position.

Figures 1 and 2 show in their entirety the apparatus according to the invention, indicated by reference numeral 1, located in a building whose roof is indicated by reference numeral 2. The apparatus 1 comprises two separate, preferably parallel columns 3, only one of which is shown in the drawings. These columns are connected to each other at the top by an upper beam a h, so that a substantially U-shaped frame is formed. Between the posts 3 there is a conveyor 5 supported at a short distance from the floor 6 of the building, which in this case comprises a plurality of rollers or wheels 7 arranged transversely to the conveying direction, between which plates or bridges 8 extend to facilitate movement of the operator. The function of the conveyor is to feed, for example, a timber package 9 from the press and / or the track manufacturing machine previously included in the processing cycle through and past the equipment 1.

The drawings further show a roller 10 with a web of material 11 intended to be placed on the upper surface of the timber package 9. The material web 11 can be, as is known per se, any suitable material, for example paper, plastic or the like. In practice, a web formed by a paper substrate on which a cover layer of preferably reinforced plastic is preferably attached is usually preferred.

If desired, the running roof 12 can be fitted to the roof of the building, which is as low as possible thanks to the invention, for handling the roller 10. However, the running cat 12 is not necessary because the roller 10 can be handled just as well by other devices, for example a forklift.

According to the principle of the invention, the apparatus 1 comprises a roller holder, indicated by the general reference number 13, which moves between a workstation above the timber package 9 shown in Fig. 2 and a lowered station shown in Fig. 1, preferably near or next to a conveyor 5. exchange.

* 59965

To disassemble the track 11 from the roller 10, two feed rollers 1 **, 15 are provided, which work together when the holder 13 is in the workstation, as shown in Fig. 2. Of these rollers, the former is fixedly mounted in the vicinity of the holder's workstation, i.e. the latter roll is mounted on the holder 13 and adapted to travel therewith. As best seen in Figure 1, this arrangement allows a portion of the web to be guided between and through the gap formed between the rollers when the second roll 15 together with the holder 13 is in the first charged position, with the result that the web will automatically adhere. or adhere to the compression point between the rollers when these are brought close to each other, as shown in Figure 2.

The apparatus according to the invention further comprises, in its entirety, the reference numeral 16 for cutting pieces suitable for cutting from the roll 10 from the web of material fed out by means of the feed rollers 1 *, 15.

Reference is now made to Figures 3 "5, which illustrate in more detail the roller holder, cutter and mechanism for both operating a pair of rollers and raising and lowering the holder 13. The main part of the roller splitter 13 is formed by an elongate, preferably horizontal beam 17, in this case between the two separate columns 3 and at opposite ends of the beam there are a pair of rollers 18, 19 which are guided by the guide rollers of the guides in the respective columns, two projections 2Q are mounted on the support beam 17, only one of which is shown in the drawings. A V-shaped base 21 for receiving a support protruding from the roller 10, in this case formed by opposite ends of a rod 22 passing through the roller, at least one protrusion is preferably adjustable at different positions in the longitudinal direction of the support beam. to receive support organs. In the example shown, the protrusion 20 is adjustable, i.e. movable in the longitudinal direction of the beam, due to the fact that the protrusion is fitted on the hook via a hook 23 to a gripper guide welded to the upper rear corner of the beam 17. As can be seen from Fig. 3, the support beam 17 can be mechanically locked, i.e. locked, to the workstation shown by means of two detent devices 2 jotka arranged on corresponding columns. Each detent device is of the latch type and includes a body pivotable about a joint 25 with an oblique edge 26 and a horizontal shoulder edge 27 against which the beam rests. Optionally, the shoulder edge may be provided with an adjusting device, as shown in the drawings. The lowering of the detent device 2k from the concealment position is performed by means of an operating pin 28 articulated to the upper part of the detent device.

The first feed roller 1 * »is arranged in the space between the columns 3 and is accessible by means of a first motor 29, preferably 59965 / kk, mounted on the top beam, while the second roller 15 is rotatable at idle and is connected to the support beam 17 by suitable fasteners 30. the fasteners of the roll 15 are preferably formed so that the roll in question rests rearwardly against the drive roller 14. In addition, both rollers have flexible or retractable outer parts which ensure good adhesion of the web 11 to the nip between the rollers.

According to a preferred embodiment of the invention, said motor 29 is arranged to drive the first roll 14 and to both raise and lower the holder 13. For this purpose, the roller 14 communicates with the motor via a transmission device 31, which always causes the roller to rotate depending on the direction of rotation of the motor, and communicates with two chain devices, indicated entirely by reference numeral 32, only one of which is shown in the drawings. Both chain devices are thus arranged at the respective ends of the roll 14. In the case shown, the transmission device 31 is simply formed by an endless chain connecting the gear to the corresponding gear 33 on the output shaft 11a of the gear motor, which is fixed to the roller shaft pin 34 (see Fig. 4). Each chain device 32 includes a chain 35 having at least one end 36 attached to an upper beam or post and passing from a fixed end 36 in a loop to an idler wheel 37, an upper beam, preferably vertically above the idler wheel 37, and a first idler wheel 38 14 a shaft over a one-way switch 39 connected to a pin (see Fig. 4), which rotates freely when the roll is driven in the direction of rotation feeding the web, but which rotates with it, i.e. engages the chain when the roll rotates in the opposite direction of rotation, and over a second deflection wheel 40 chain interleaving with single-way switch 39. In the example shown, the chain 35 extends from the second deflection wheel 40 as a storage lug 41, the end of which is attached to the upper beam 4, a trusting weight 43 being arranged between the second deflection wheel and the attached end 42, which is adapted to keep the chain properly tensioned. Raising and lowering of the holder 13 is effected due to the rotation of the motor in one of the two directions of rotation by the shortening, respectively elongation, of the chain loop between the one-way switch 39 of the idler wheel 37j-a.

As can be seen in Figure 5, the cutter 16 comprises a reciprocating cutting device connected to the posts or the center beam, substantially parallel to the feed rollers 14, 15, formed by a saw blade 44 driven by a second motor 43. This cutting device is movable by a separate support beam 45 extending between the posts. in the direction of the drawer bar with guides or guides for the cutting device. In this case, said guides are two directed guide rulers 46 facing each other, with which in the grip 6 59965 there is a suitable number of flanged steering wheels * »7 located on a stand supporting the motor A3. According to the invention, this second motor A3 is used both to rotate the saw blade AA and to move the cutting deck along the support beam, the motor being usually an air-cooled electric motor whose fan has been replaced by a saw blade and whose output shaft communicates with the bevel gear A8 via a bevel gear. communicates with a longitudinal rack A9 attached to the support beam. Thus, it is obvious that the rotation of the motor A3 causes both the motor to move in one of the two directions along the support beam and the saw blade AA to rotate in one of the two directions of rotation.

The support beam A5 comprises a plate on the side 13 of the holder or the like, preferably with straight lower edges 50, located at approximately the same level at or slightly below the corresponding edge 51 of the plate 52 connected to the holder when the holder is in the workstation, as shown in Figure 5. at its opposite end, the support beam A5 is pivotally mounted around joints 53 arranged eccentrically with respect to the center of gravity of the beam (which is determined not only by the beam but also by other parts thereof). This causes the beam to self-aim? rotate to the operating position shown in Figure 5, wherein said two plate edges 50, 51 converge. As can be seen from this figure, the saw blade AA is located in the immediate vicinity of the first plate edge 50, whereby the web of material 11 is adapted to be fed between the two plate edges. It follows that the web can be firmly held between the plate edges 50, 51, even if the saw blade moves in the longitudinal direction of the support beam during cutting of the web. According to the invention, the guides or guide rulers of the cutting device or motor A3 can be pivoted away from the holder 13 at both opposite ends so that the motor and thus the saw blade AA at the beginning and end of the trajectory move away from the material web to be cut or cut. It is also conceivable to allow the cutting blade moving along the beam to co-operate with control devices mounted separately in the vicinity of its opposite ends of the upper beam A, whereby the beam A5 and all associated parts move away from the plate 52 at the beginning and end of the cutting device path.

As can be seen in Fig. 5, the retaining tab 2A of the holder 13 is connected to the plate A9 of the support beam A5 via a drive pin 28, so that moving the support beam plate away from the holder plate 52 by rotating the support beam clockwise in Fig. 5 A drive arm 5A is connected to the support beam A5 or its plate for manually rotating the support beam.

59965

The described hardware works as follows:

At the workstation shown in Figures 2 and 5, the holder 13 is raised towards the upper beam 4 of the frame, in which position the holder rests against both retaining devices 24 of the respective columns. The material web 11 on the roll 10 is fed out by means of a pair of rollers 14, 15, whereby the drive roll 14 is made to rotate clockwise in the figures by means of the first motor 29. In this case, the single-way switch 39 rotates freely. Then a certain length of the web of material fed into the rollers is cut by means of a saw blade 44 which, by means of a motor 43, is made to move transversely to the feed direction of the web in the manner described. At the same time as the web is ejected from the roll, the timber package 9 is, of course, also moved along the conveyor 5. This operation can therefore be continued until the entire material on the roll has been used.

When a new roll has to be fitted to the holder 13, the procedure is as follows. Both motors 29 and 43 are stopped and the support beam 45 is set to the position shown in Figure 3 with the motor 43 sideways and the plate 49 spaced from the holder plate 52. To release the weight of the holder 13 from the detent device 24 and the detent device release position a small distance upwards above the restraint device. This is done by causing the first motor 29 to rotate in the opposite direction, which means that the roller 14 rotates counterclockwise. In this case, the single-way clutch 39 becomes operative, as a result of which the counterclockwise rotation of the roll causes one of the lengths of the chain loop between the road clutch and the fixed end 36 to decrease, as a result of which the holder suspended on the idling wheel 18 rises a short distance.

The length of this short rise can be determined by a limit switch or the like which interrupts the rotation of the motor as soon as the holder has left the stop device.

At this point, the retaining device is removed from the locking position by rotating the support beam 45 clockwise by means of the operating arm 54, whereby the pin 28 will pivot the retaining device downwards. Now the weight of the holder all the time affects the one-way switch 39, so that this always remains active. The holder continuously lowers to the position shown in Fig. 1 due to the clockwise rotation of the first motor 21. As soon as the holder has passed the position of the retaining device 24, this can return to its locking position, for example by the action of a spring. When the holder has reached its rest or charging position shown in Fig. 1, the rotation of the motor 29 is stopped (this can take place, for example, by acting on a limit switch located at the bottom of the column).

At the main access station, the used roller support rod 22 is removed, after which a new roller is fitted to both bases 21 of the holder. This can be done, for example, by means of the running cat 12 shown in Fig. 1 or in some other suitable way. When the holder is lifted to its working position, the motor 29 is restarted counterclockwise, which causes a reduction in the length of the β 59965 chain loop extending between the single path switch 39 and the fixed end 36 of the chain. When the support beam 17 passes the holding device 2k, this will automatically pass downwards and pass the holder thanks to the obliquely set edge 26, whereby the holding device immediately returns to its locking position, i.e. when the beam has completely passed it. Once the holder has entered its working position, the direction of rotation of the motor is changed, which causes the one-way switch to rotate freely, so that the operation of the chain device 32 ceases and, on the other hand, the roller 1 * »starts feeding the material web 11.

It is noted that the first part of the material web 11 is placed idle on the roll 15 already when the holder is in the charging position shown in Fig. 1, as a result of which the material web automatically attaches to the pressing point between the rolls as soon as the holder reaches the work station.

The advantages according to the invention are obvious, since the described apparatus requires an unusually small space in the height direction, as a result of which considerable savings in construction and heat economy are achieved. In addition, the change of rolls is simplified because the web of material in question is automatically attached between the feed rollers as explained.

It is clear that the invention is not limited to the embodiment described and shown in the drawings. Thus, for example, it is conceivable to make the body 3.1 »as well as the holder 13 in a different way than shown. It is also possible to make the equipment an accessory immediately to the timber press and not as a stand-alone equipment. Furthermore, the cutters 16 can be made in any other arbitrary manner as well as a mechanism for raising and lowering the holder. Thus, instead of the chain device described, it is conceivable to use the type of screw nut arrangement normally used, for example, in tower cranes or elevators. In one such arrangement, the holder may be supported by nuts which are in the grip of a thread of two separate vertical screws, the nuts being rotatable either relative to the stationary screws or vice versa to the fixed nuts. In a manner similar to the example shown, it is possible, inter alia, to use the same motor for both the feed roller and the lifting and lowering of the holder, since the motor is adapted to the rotating bolts in engagement with fixed nuts at opposite ends of the holder. Of course, it is also conceivable to make the apparatus suitable for coating objects other than packages of timber or the like. Accordingly, the invention may be varied in many ways within the scope of the following claims.

Claims (12)

A method of packaging articles such as wood parcels or packages of other wooden products, by means of a protective, preferably paper and / or plastic material web (11) wrapped in a roll (10), the roller being arranged in a holder (13). ) in a working position existing above the article (9) in which from the mill is unwound a web piece suitable for the length of the article which is separated from the mill and applied to the article, it can be characterized that the holder (13), when changed by a mile, is lowered to a from the working position (Fig. 2) feather net, preferably near or adjacent to the base (5) of the article (9), existing resting or charging position (Fig. 1) in which an unused mile (10) is arranged in the shelf, whereupon the shelf 3 moves the working position of carrying the target in the downward direction and upwards, and that the material of unwinding from the roller (10) is provided by a pair of cooperating dispensing rollers or units (14 »15), one of which (14) is stationary mounted in near the pour the working position of the cleaner, while the other (15) is arranged to accompany the holder, whereby from the mill, at least a short web portion is passed through the gap between the two output units where the second unit (15) together with the holder (13) is in said charge position such that the web autona tly is gripped or pinched between the output units (14 »15) there. the holder and its output unit (15) are moved to the working position. Method according to claim 1, characterized in that the holder (13) is caused to move vertically. An installation for packaging articles, such as wood parcels or packages of other wooden products, by means of a protective, preferably paper and / or plastic-resistant material web (11) wound in a roll (10), the roller being arranged in a shelf (13) in a working position existing above the article (9) in which from the roll is unwound a web piece that fits to the length of the article which is separated from the target and applied to the article, according to claim 1 or 2, characterized in that the holder (13) ) is movable between a working position existing above the article (9) (Fig. 2) and a submerged working position, preferably when or adjacent to the substrate (5) existing resting or loading position in which exchange of the targets can occur, and that of the material web (11). ) winding from the mill is provided a pair of cooperating dispensing rolls or units (14, 15), one of which (14) is stationary mounted in the vicinity of the working position of the holder, while the second (15) is mounted p4 of the holder and arranged. to accompany it, whereby a portion of the web is insertable into and through the gap between the output units where the other unit together with the holder (13) is in said loading position, whereby the web is automatically gripped or nip said units where they are adjacent to each other. '3 59965 4. Installation according to claim 3, characterized in that the holder (13) is movable in vertical direction. Installation according to any one of claims 3 or 4, characterized in that the holder (13) comprises a longitudinally extending, preferably horizontal beam (17), the two opposite ends of which are preferably controlled by pulleys (18, 19) »by means of two separate spacers. mutually parallel supports (3) · Installation according to claim 3, characterized in that the two supports (3) at the top are interconnected by means of an overlay (4), forming a substantially U-shaped frame. Installation according to any of claims 5-6, characterized in that the holder beam (17) has two outriggers (20) each having a seat (21) for receiving the supporting element (22) projecting from the roll, e.g. they both noted the ends of a continuous step through the roll. 8. A plant according to claim 7, characterized in that one of the outriggers (20) is adjustable in different positions along the length-extension of the pouring beam and for receiving for rolls of rope, supporting elements of different lengths. An installation according to any one of claims 5-8, characterized in that the first dispensing roller (14) extends between the two stands and is driven by a first motor (29), preferably mounted on the bar (4), e.g. an electric motor, while the second vala (15) is rotatable in idle gear and via suitable brackets (30) connected to the pouring beam (17), substantially parallel to it. I0. Installation according to any of claims 5-9 »characterized in that the holding beam (17) is mechanically lockable or readable in said working position down a pair of locking means (24). M. Installation according to claim 9 or 10, characterized in that the first the motor (29) is arranged for well operation of the first roller (14) as lifting and lowering of the bracket (13) * for which said roller (14) & one aide are in communication with the motor via a transmission (31) such as provides rotation of the roller depending on the direction of rotation of the engine and others. the side connects to a pair of chain mechanisms (32) each comprising a chain (35) which has at least one end (36) fixed to the frame or overlay and from which the fixed end (36) runs in a loop via in turn and ordering a pawl (13) arranged gear wheels (37), a first breakwheel (3β) arranged on the frame above the bracket, one coupled to the first roller (14), a three-way clutch (39) driven by the free wheels of the pawl 3 in a the male (11)