DK172692B1 - Plant and method of supplying a weave with yarn - Google Patents

Description

in DK 172692 B1

BACKGROUND OF THE INVENTION The present invention relates to a plant for supplying a web of yarns which comprises a yarn rack located adjacent to the web and comprising a series of lateral, interchangeable carriages which are suspended via carrier rollers in a ceiling rail arrangement on which yarn coils are suspended. said rack comprises a feeder station having a plurality of side-mounted rails, each capable of carrying one or more carriages, located in the immediate vicinity of the loom, and a nearby storage station which is connected to the feeder station via the rail arrangement.

The invention further relates to a method of supplying a web with yarns from a '10' rack which comprises a series of parallel, interchangeable carriages suspended in a ceiling rail arrangement, whereby yarns are arranged and the yarns are unwound from the reels while the carriages are located. each on its own rail in a feeding station in the immediate vicinity of the loom.

15 In this specification, we talk about providing a weave with a yarn. However, the plant can also be used to supply other machines with yarn, such as knitting machines.

There are known plants in which a web is supplied with yarns from a large number of yarn coils which are suspended in a yarn shelf. Gaming shelves can be fixed installations where the yarn poles are placed on a fixed mounting shelf and where the replacement of the yarn poles takes place directly in the yarn shelf located in the immediate vicinity of the web. Between the various rows of yarn coils in the yarn shelf, it will be necessary to have sufficient distance for a person to come in with a cart and replace the yarn coils when these are empty or nearly empty. Such a system is therefore disadvantageous, as the rack takes up a lot of space. Furthermore, a replacement of the yarn poles in the yarn rack will require the tissue to stand still for a long time. This is disadvantageous, since as short a stop in the tissue as possible is desired. Furthermore, it is a heavy task for an operator to lift the bobbin from the cart and place it on the pin of the bobbin. Furthermore, the work is cumbersome, as there is a need for space in the game rack.

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In order to reduce the time at which the loom is stationary, it has also been proposed to build a plant with a gambling rack consisting of interchangeable carriages on which the yarn poles are placed.

When the yarn poles are emptied, the carts are pushed out individually from the shelf shelf, and other carts with filled yarn spools are driven individually into the shelf shelf. This system reduces the S time at which the tissue stands still. In this situation, the loom should only stand still during the time when the yarn from the nearly empty yarn coils are cut, the carts are replaced and the yarn ends from the loom are spliced with the yarn ends from the new yarn coils.

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However, a plant of this type is also associated with disadvantages. In the wagon wagons, the · 10 winding poles are usually mounted on pins projecting to each side. A large number of pins are placed above each other, which means that the wagons will have a high center of gravity. There is a risk that the carts will overturn. This risk is particularly pronounced if a trolley is fitted with only coils on one side. Furthermore, the maneuvering of the carriages itself is a heavy task, and when the carriages are replaced, there is a risk that a carriage will be placed in the wrong position in the rack. Hereby, the product formed on the loom will be disposable.

Also known as double shelving. These are yarn shelves with two storage tabs / yarn spools for each yarn fed to the weave. In these shelves, an operator will walk around the gambling shelf itself and remove the empty yarn spools and place the filled ones. This causes wind movements which can cause the yarns in the rack to filter together. This creates a situation where the tissue must be stopped.

A plant of the type mentioned initially is known from US Patent No. 3,602,456, which discloses a system with a ceiling rail arrangement by means of which interchangeable yarn wagons can be passed between a number of branch rails via a main rail. Carriages with vulture coils are driven into the main rail via the branch on the main rail. However, a storage station is located at a great distance from the feeding station and a displacement of the carriages along the main rail can result in a risk of wagons being displaced on incorrect rails in the feeding station, as no direct rails are present in a feeding station and a storage station.

in DK 172692 B1 3

US Patent No. 4,988.2S2 discloses a yarn wagon which is guided along guide rails on the floor of a supply station. Thus, from this writing, a rail arrangement is known for controlling the carriages. However, no means have been described for a quick and safe replacement of gambling cars.

5 U.S. Patent No. 4,783,021 discloses carts which are suspended in a ceiling rail arrangement. However, this document does not disclose any means for a quick and safe replacement of the gambling cars between feed stations, storage stations and any other associated stations in the plant.

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From WO-90/09475 there is known a plant for supplying yarn to plants in the textile industry. According to this document, wagons are moved between different stations under the supervision and control of a data processing unit. There is also no description in this document of a way to ensure a quick and accurate replacement of carts in the feeding station with carts from a storage station.

It is the object of the present invention to overcome the disadvantages of the prior art plant and method, and to provide a mechanically simple plant and method which allows for a quick and safe replacement which will simultaneously provide a better working environment for the operator.

This is achieved according to the present invention with a system which is characterized in that the system comprises at least two associated rails in the storage station for each rail in the naval station.

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The method according to the invention is characterized in that the carriages, when the yarn poles are emptied, are moved via the ceiling rail arrangement from the rail in the feeding station to a first associated rail in a storage station, that from a second related rail in the storage station, carts with filled yarn coils are moved into it. associated with said rail 30 at the feeding station for subsequent supply of the web.

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As the carriages hang in a ceiling rail arrangement via carrier rolls, the risk of overturning will be totally eliminated, even in the case where a carriage is only provided with gutter coils on one side.

5 The ceiling rail arrangement also makes it possible to ensure that wagons are always placed in the correct position in the feeder rack's feed station. As there is at least two rails in the storage station for each rail in the feed station, it will be possible to run the empty wagons onto one of these at least two rails when replacing the carriages. The second of these at least two rails will then contain the carts, which must then be moved into the feeding station. Thus, it will be possible, in advance and possibly via monitoring of a central data processing unit, to ensure that it is the right wagons that are on the rail in the storage station and which are then displaced on the rail in the feeding station.

Due to the rail system, a shift will happen very quickly, as an operator can move 1S 4-6 wagons or more simultaneously from the feed station to the storage station and through the storage station to the feed station. This can save considerable time and labor compared to individual carriage replacements.

The operator's work on replacing the bobbin winding is considerably facilitated, as it can be done in the 20 separate emptying / filling stations. In these stations, the operator can have plenty of room, and at the same time, the filled yarn coils can be lifted to an appropriate working height by means of a forklift, lift trucks or similar equipment, which will be space for the outside of the yarn. As the reel replacement takes place outside the gaming rack, there is no risk of wind movement and gust in the gaming rack, thereby eliminating the risk of entanglement of the gamer.

With the ceiling rail arrangement, it is possible in a simple way to build a mechanically simple system. This is possible as the rail arrangement can be built up by itself known rail units with switching tracks to properly transport carriages between the various stations of the plant. Such switching stations can be operated manually by the operator who switches the carriages in the rack. Alternatively, it is possible to operate the switching stations via a DK 172692 B1 5 central data processing unit. The switching stations can be of a traditional type which is activated mechanically, electrically or pneumatically.

Since the rail arrangement always connects a gamreol feeding station to the corresponding 5 nearby storage station, there will be no risk of misplacement of wagons in the feeding station. As the feeding station and storage station are close to each other, the replacement can be done very quickly.

Therefore, the fabric need only be stopped during the time the yarns are cut, the row of 10 carriages is shifted from feed station to storage station and subsequent insertion of new carts as well as splicing of yarns from the loom with yarns from the filled coils.

The invention will now be explained in more detail with reference to the accompanying schematic drawing, in which FIG. 1 is a view illustrating a plant according to the invention; FIG. Fig. 2 is a view illustrating a carriage forming part of a gambling rack in the system according to the invention; 3 is a view of a portion of the embodiment of FIG. 3, 20 FIG. 4 is a partial sectional view illustrating the connection between the carriage and a ceiling rail included in the system according to the invention; and FIG. 5 shows a partial view illustrating a floor rail included in the system according to the invention.

In FIG. 1 is a schematic view of a plant 1 according to the invention. FIG. 1 illustrates the schematic structure of the plant A number of details which will be within the scope of the skilled person to choose in the light of the description are thus not included in the figure.

In FIG. 1, a series of looms 2 are shown, which are provided with yarns from the plant l's gamle shelf 3. The gam-30 shelf 3 comprises a series of parallel carriages 4 (see fig. 2) on which yarn spools 5 are suspended. The gaming rack has a feeding station 6 located in the immediate vicinity of the looms DK 172692 B1 6 2, as well as a nearby storage station 7. The carriages 4 are suspended via a carrier roll 8 (see Fig. 2) in a ceiling rail arrangement 9.

The rail arrangement 9 may be mounted on a number of columns or suspended in the ceiling. The ceiling rail arrangement 9 comprises at the feed station 6 a plurality of first rail lengths 10 for each web 2. In the embodiment shown, there are four first rail lengths 10 for each web 2. For each of the parallel first rail lengths 10 in the feed station 6, there are at least two other rail lengths 11 in The storage station 7. In the embodiment shown, there are three other rail lengths 11 for each first rail length 10. The rail arrangement further comprises a central rail length 12. Each of the second rail lengths 11 is connected to the associated first rail via shift stations 13 and the central rail length 12. rail length 10. Thus, it becomes possible to move the carriages 4 between different stations in the rail arrangement.

In FIG. 1, a row of carriages 4 is indicated at 14 which are suspended in a first rail length 10. Each row 14 preferably comprises four to six carriages of the type shown in FIG. 2. These carriages occupy a width 15 when they are provided with baffles 5.

The width 15 comprises the width of the stuffed carriage 15 'itself, which is approx. 700 mm, and on each side thereof a free space 15 ”of approx. 400 mm to ensure trouble-free unwinding 20 of the yarns, which is traditionally fed to the loom via a pipe system (not shown) on each side of the row 14 of gambling wagons 4.

Between each carriage 4 there will be a distance or aisle area 16 which simply needs to be sufficiently wide for an operator to be positioned between the carriages to perform the necessary operations of cutting and splicing yarns on a per se known way by replacing the bobbin winding. This distance will preferably be between 700 and 800 mm, preferably about 800 mm. This is a space saving of approx. 20% compared to traditional plants, where an operator must also be able to bring a trolley when replacing the bobbin winding.

The rail arrangement 9 connects via the central rail length 12 the rack 3 to a filling station 17, in which filled bobbins are placed in the carriages. The shelving unit 3 is also connected to an emptying station 18, where coils with any remaining yarn are removed from the carriages 4. The unit 1 is optionally connected to a data handling unit (not shown) which controls the displacement of the carriages 4 between the various stations and the setting of alternatively, the plant 1 can be manually monitored and the displacement of carriages 45 between the various stations is then effected by the operator setting up shift stations 13 according to need. The switching stations can be set by means of electrical, pneumatic or mechanical actuators, as will be well known to those skilled in the art.

In FIG. 2-5 show various details of the system 1 and the carriage 4. The carrier rollers 8 comprise wheels 19 which rotate about substantially horizontal shafts 20.1 fig. 4, the rail arrangement comprises a substantially C-shaped profile having at its downwardly facing side an opening 21. Passing through the opening 21 is a connecting flange 22 for the support roller 8. The connecting flange 22 is connected to an upper supporting profile 23 which forms a part of the wagon 4.

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Each carrier profile 23 is provided in the illustrated embodiment with four vertical posts 24.

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Alternatively, a greater number of posts may be used, for example up to eight. At the bottom of the posts 24 these are connected by a lower support profile 25. At the underside of the lower support profile 25, guide rollers 26 are mounted which rotate about substantially 20 vertical shafts.

The guide blades 26 cooperate with a floor rail 27, which is intended to be placed at least in the feeder station 3 of the rack 3 during a corresponding first rail length 10.

This ensures a secure vertical orientation of the carriages when placed in the feeding station. This is important for proper unwinding of the yarns from the yarn pole 5.

At the entrance to the feed station 6, the floor rail 27 has a funnel shape 28, so that the guide mills 26 more easily engage with the guide rail 27.

Each of the vertical posts 24 is provided with a row of pins 30 superimposed one above the other. The pins 29 face outwards on each side of the carriage, as shown in FIG. 3.1 in the embodiment shown, eight pins 29 are arranged one above the other on each vertical pole 24. As the coils 5 are arranged on the pins 29 (see Fig. 2), on each pole sixteen coil bobbins 5 may be arranged. Alternatively, it is possible to use a different number of pins 29. In the embodiment shown, the pins 29 extend perpendicular to the vertical posts 24. Alternatively, the pins 29 can be positioned with an oblique upward orientation.

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The system shown in the figure will operate as follows.

When the yarn poles 5 in the feeder station 3 of the gutter shelf are approximately empty, the web 2 is stopped, then the yarn ends are cut so that loose yarn ends hang from 10 each of the tubes which supply the web 2 with yarn from the feed station 6. When all yarns are cut, the switching station 13 so that a first rail length 10 in the feeding station 6 is connected to one of the associated second rail lengths 11 in the storage station 7.

Thereafter, the row of carriages 4 with empty yarn coils 5 is displaced to this associated second rail length 11. Thereafter, the shift station 13 is switched so that one of the other two of the 15 second rail length 11 in the storage station 7 is connected to the corresponding first rail length 10 in the feeding station 6. The operator repeat this for the first four rail lengths belonging to the loom 2. Next, the yarn ends from the filled yarn coils S are spliced with the yarn ends to the loom. The tissue can then be restarted.

20 Since each first rail length 10 is associated with three other rail lengths 11, there is a risk of introducing a wrong row of 14 carriages 4 into the feed station 6. In order to ensure a proper displacement of the carriages 4 between the feed station 6 and the storage station 7, the second rail lengths 11 be provided with color codes.

When the loom is restarted, the operator can, via the central rail length 12, displace the carriages 4 to the emptying station 18, where yarn coils 15 with any remaining yarn are removed from the carts 4. The carts are then moved to the filling station 17, where new yarn coils are placed in the carriages. Once this has happened, the carts can again be displaced via the central rail length 12 into the storage rack 7 of the rack 3 on a correct second rail length 30 split.

DK 172692 B1 9

As the operator is able to supply the carriages on the central rail length 12 which is in a position behind the feeding station 6, and since replacement of the yarn coils 5 takes place in the separate emptying / filling stations 18,17, no wind movements or air shocks occur in the yarn rack. feed station 6 as with the traditional double shelves with two pins for each gam 5 end. This is important, as even relatively small gusts of wind will cause gams unwound from the yarn poles 5 to filter together, which may cause the tissue 2 to stop or the resulting product to be scraped.

Claims (10)

10 DK 172692 B1 PATENT REQUIREMENT · An apparatus (1) for supplying a web (2) with yarn, comprising a gaming shelf (3) positioned next to the web, and comprising a series of parallel, interchangeable carriages (4), 5 as via carrier rolls (8) is suspended in a ceiling rail arrangement (9), on which yarn coils (5) are suspended, that the yarn rack (3) comprises a feeding station (6) having a series of parallel rails (10) each capable of carrying one or more carriages. (4) and located in the immediate vicinity of the loom (2) and a nearby storage station (7) connected via the rail arrangement (9) to the feeding station (6), characterized in that the plant comprises at least two associated rails ( 11) in the storage station (7) for each rail (10) in the feeding station (6). Installation according to Claim 1, characterized in that the ceiling rail arrangement (9) connects the gaming rack to a filling station (17) in which filled gaming coils are placed in the carriages (4). 15 System according to Claim 1 or 2, characterized in that the ceiling rail arrangement (9) connects the shelving unit to an emptying station (18), where coils with any remaining yarn are removed from the carriages (4). Installation according to any one of the preceding claims, characterized in that the rail arrangement (9) comprises at least in the feeding station (6) a floor rail (27) arranged below the ceiling rail, which cooperates with guide rollers (26) at the bottom of the carriage. Installation according to claim 4, characterized in that the floor rail (27) at the entrance (28) 25 to a station (6) has a funnel shape. Installation according to any one of the preceding claims, characterized in that each carriage (4) comprises an upper carrier profile (23), the carrier rollers (8) being mounted on the upper carrier profile for rotation about substantially horizontal axes within. C-shaped downwards open 30 ceiling rails (9), that each supporting profile (23) is connected to 4-8 vertical posts (24), which at their bottom are connected to a lower support profile (25), each of which is provided with DK 172692 B1 11 an outwardly facing row of pins (29) facing each side, on which the coils (5) are arranged. Installation according to any one of the preceding claims, characterized in that the distance between the adjacent carriages (4) in the feeding station (6) is between 700 and 900 mm, preferably approx. 800 mm. A method of supplying a web (2) with yarn from a yarn rack (3), comprising a series of juxtaposed, interchangeable carriages (4) suspended in a ceiling rail arrangement 10 (9) and on which yarn spools (5) are positioned and where the yarns are unwound from the coils while the carriages are on each of their rails (10) in a feeding station (6) in the immediate vicinity of the loom, characterized in that the carriages (4), when the yarn coils (5) are emptied, via the ceiling rail arrangement (9) is displaced from the rail (10) in the feeding station (6) to a first associated rail (11) in a storage station (7) that from a second related rail (11) in the storage station (7) the carriages (4) are moved with filled yarn coils (5) onto the associated rail (10) in the feeding station (6) for subsequent supply of the web (2). Method according to claim 8, characterized in that the emptied carriages (4) are displaced via the ceiling rail arrangement (9) to an emptying station (18) where the coils are removed and the carriages are then displaced to a filling station (17) where filled yarn coils are placed in the carriages (4) and the carriages are then moved to the storage station (7) and ready for a subsequent displacement into the feeding station (6). Method according to claim 8 or 9, characterized in that the displacement of the carriages between different stations is monitored and controlled by a data processing unit.