Apparatus comprising a single facer and method
阅读说明:本技术 包括单面机的设备以及方法 (Apparatus comprising a single facer and method ) 是由 A·毛罗 于 2020-03-27 设计创作,主要内容包括:本发明涉及的设备包括具有支撑结构(31)的至少一个单面机(3),所述支撑结构适于接收设置有彼此啮合的第一波纹辊(20.3)和第二波纹辊(20.4)的波纹单元(20)。所述设备还包括盒(7),所述盒具有用于接收波纹单元(20A,20B)的多个座(7A,7B,7C)并且可沿第一引导件(5)运动。设置与所述单面机(3)相关联的梭(11),所述梭可在所述单面机(3)与所述盒(7)的引导件(5)之间运动,适于将波纹单元(20A,20B)从所述单面机(3)转移至所述盒(7),反之亦然。(The invention relates to an apparatus comprising at least one single facer (3) having a support structure (31) adapted to receive a corrugating unit (20) provided with a first corrugating roller (20.3) and a second corrugating roller (20.4) which are in engagement with each other. The apparatus further comprises a cartridge (7) having a plurality of seats (7A, 7B, 7C) for receiving the bellows units (20A, 20B) and being movable along the first guide (5). A shuttle (11) associated with the singlefacer (3) is provided, movable between the singlefacer (3) and the guide (5) of the cartridge (7), adapted to transfer a corrugating unit (20A, 20B) from the singlefacer (3) to the cartridge (7) and vice versa.)
1. An apparatus for producing corrugated paperboard comprising:
at least one single facer (3) comprising a support structure (31) adapted to receive a corrugation unit (20) comprising a first corrugation roller (20.3) and a second corrugation roller (20.4) meshing with each other; and
a cartridge (7) comprising a plurality of seats (7A, 7B, 7C) for receiving the corrugated units (20A, 20B) and movable along a first guide (5);
characterized in that a shuttle (11) is provided associated with the singlefacer (3), wherein the shuttle (11) is movable between the singlefacer (3) and the guide (5) of the cartridge (7) and is adapted to transfer the corrugating unit (20A, 20B) from the singlefacer (3) to the cartridge (7) and vice versa.
2. The apparatus of claim 1, wherein the shuttle is adapted to: receiving a ripple unit positioned in the nest aligned with the single facer, transferring the ripple unit into the single facer and releasing the ripple unit into the single facer; and accessing a ripple unit positioned in the single facer, transferring the ripple unit into the cassette and releasing the ripple unit into the cassette.
3. The apparatus according to claim 1, characterized in that the first guide (5) is substantially orthogonal to the corrugation rollers (20.3, 20.4) of the corrugation unit (20A, 20B) when the corrugation unit is housed in the single facer (3).
4. The apparatus according to claim 2, characterized in that the first guide (5) is substantially orthogonal to the corrugation rollers (20.3, 20.4) of the corrugation unit (20A, 20B) when the corrugation unit is housed in the single facer (3).
5. Apparatus according to claim 1, characterized in that said first guide (5) is approximately at the level of the floor (P) on which said single facer (3) is mounted.
6. Apparatus according to any one of claims 2 to 4, characterized in that said first guide (5) is approximately at the level of the floor (P) on which said singlefacer (3) is mounted.
7. The apparatus according to claim 1, characterized in that the shuttle (11) comprises a lifting member (30) adapted to lift the corrugating unit (20A, 20B) from a support structure (31) of the single facer (3) and from the cassette (7) and to lower the corrugating unit (20A, 20B) onto the support structure (31) of the single facer (3) and onto the cassette (7), whereby the corrugating unit can be lifted from the support structure of the single facer by the shuttle, transferred to the cassette by the shuttle, and released onto the cassette by the shuttle, or vice versa.
8. The apparatus according to any one of claims 2 to 6, characterized in that the shuttle (11) comprises a lifting member (30) adapted to lift the corrugating unit (20A, 20B) from the support structure (31) of the single facer (3) and from the cassette (7) and to lower the corrugating unit (20A, 20B) onto the support structure (31) of the single facer (3) and onto the cassette (7), whereby the corrugating unit can be lifted from the support structure of the single facer by the shuttle, transferred to the cassette by the shuttle, and released onto the cassette by the shuttle, and vice versa.
9. Apparatus according to any one of claims 1 to 7, characterized in that said shuttle (11) is movable along a second guide (9A, 9B) extending between said singlefacer (3) and said first guide (5).
10. Apparatus according to claim 9, characterized in that the second guides (9A, 9B) are parallel to the axes of the corrugation rollers (20.3, 20.4) of the corrugation unit (20A, 20B) when the corrugation unit is in the singlefacer (3).
11. The apparatus according to claim 9, characterized in that the first guide (5) and the second guide (9A, 9B) intersect each other.
12. The apparatus according to claim 11, characterized in that the second guide (9A, 9B) is interrupted at a guide rail (5A) forming the first guide (5).
13. The apparatus according to any one of claims 9 to 12, characterized in that the first guide (5) and the second guide (9A, 9B) are orthogonal to each other.
14. Device according to any one of claims 1 to 7, characterized in that said shuttle (11) comprises three pairs of wheels (11.2, 11.3, 11.4) for resting on and moving along a respective second guide (9A, 9B), a first pair of wheels being near a first end of the shuttle (11), a second and a third pair of wheels being adjacent to each other and near a second end of the shuttle (11), the second end of the shuttle facing the first guide (5).
15. Apparatus according to any one of claims 1 to 7, comprising a plurality of single facers (3) arranged in sequence along an alignment direction parallel to said first guide (5); wherein each singlefacer (3) comprises a respective shuttle (11) movable between the singlefacer (3) and the first guide (5), the shuttle being adapted to transfer a corrugating unit (20A; 20B) from the respective singlefacer (3) to the cartridge (7) and vice versa; and wherein the cartridge (7) is adapted to selectively position itself in alignment with one or other of the single facers (3) to allow transfer of a corrugated unit (20A, 20B) from the cartridge (7) to the respective single facer (3) by the respective shuttle (11) and vice versa.
16. Apparatus according to claim 15, wherein there is a respective second guide (9A, 9B) associated with each single facer (3), along which second guide (9A, 9B) the respective shuttle (11) is movable, each second guide extending from the respective single facer (3) towards the first guide (5).
17. The apparatus according to any one of claims 1 to 7, characterized in that the cartridge (7) comprises a motor (7.5) on the cartridge (7) which controls the movement of the cartridge (7) along the first guide (5).
18. The device according to any one of claims 1 to 7, characterized in that the shuttle (11) comprises a motor (11.5) on the shuttle (11), which controls the movement of the shuttle.
19. Apparatus according to any one of claims 1 to 7, comprising an auxiliary carriage (51) freely movable on the floor (P), comprising supports for the corrugated units (20A, 20B) and lifting members of the latter.
20. Apparatus according to claim 19, characterized in that there are aligning means (71) associated with the single facer (3) adapted to align the auxiliary carriage (51) and to facilitate the insertion thereof into the single facer.
21. The apparatus of claim 20, wherein the alignment device comprises: a platform (75) approximately flush with the floor (P) and movable transversely to the alignment direction of the auxiliary carriage (51) with respect to the support structure (31) of the singlefacer (3); and a fixed guide (81) adapted to generate a thrust on the auxiliary carriage (51) in a direction transverse to the direction of approach and insertion of the auxiliary carriage into the singlefacer (3).
22. Apparatus according to claim 21, wherein the platform (75) and the fixed guide (81) are positioned on the opposite side of the singlefacer (3) to the first guide (5).
23. The apparatus according to claim 21, characterized in that said platform (75) is suspended by tie rods (77) and floats approximately parallel to said floor (P).
24. A method for inserting a corrugating unit (20A, 20B) into a single facer (3), the corrugating unit comprising a first corrugating roller (20.3) and a second corrugating roller (20.4) which mesh with one another; the method comprises the following steps:
positioning a cartridge (7) comprising a plurality of seats (7A, 7B, 7C) for a corrugating unit (20A, 20B) so that one of said seats is aligned with said single facer (3);
by means of a shuttle (11) movable from the singlefacer (3) to the cartridge (7) and vice versa:
a) -taking a corrugated unit (20A, 20B) positioned in the seat (7A, 7B, 7C) aligned with the single facer (3), and-transferring the corrugated unit (20A; 20B) transferring into the single facer (3); or
b) -accessing a corrugation unit (20A; 20B) and transferring the corrugated unit into the cassette (7).
25. Method according to claim 24, characterized in that said undulation unit (20A, 20B) is accessed from said singlefacer (3) or from said cartridge (7) by means of a lifting member (30), said lifting member (30) being carried by said shuttle (11) and configured to: -lifting the corrugating unit from the seat of the box (7) and from the supporting structure (31) of the single facer (3), and-lowering the corrugating unit (20A, 20B) onto the seat (7A; 7B; 7C) of the box (7) and onto the supporting structure (31) of the single facer (3).
26. An apparatus for producing corrugated paperboard comprising:
a plurality of single facers, each single facer comprising a support structure adapted to receive a corrugation unit comprising a first corrugation roller and a second corrugation roller engaged with each other; wherein the single facer is aligned according to an alignment direction;
a cartridge comprising a plurality of seats for receiving the bellows units and movable along a first guide;
a guide extending parallel to the alignment direction and having a length to enable the cartridge to transfer the corrugated unit to one or the other of each of the single facers.
Technical Field
The present invention relates to an apparatus for producing corrugated paperboard. More particularly, the present invention relates to a section of a production line for corrugated paperboard, referred to as the "wet end", which section includes one or more single facers.
Background
For the production of corrugated board, a production line is used, to which a continuous paper web is fed. Some of these webs undergo a process in which slots are created orthogonal to the feed direction. Alternating smooth and corrugated paper webs are stacked and glued to each other to form corrugated cardboard. Each corrugated paperboard comprises at least one smooth paper web and one corrugated paper web. The corrugated cardboard web may then be creped and cut into individual sheets.
In order to corrugate the paper web, a machine called "single facer" is used. Each single facer includes a pair of corrugation rollers that mesh with each other and define a corrugation nip. The paper web to be corrugated is fed through a nip formed by two corrugated rolls which are in engagement with each other and which are suitably heated. Due to the thermal and mechanical action exerted by the corrugating rollers, the paper web is permanently deformed, forming a plurality of flutes arranged parallel to each other and one after the other in the feed direction of the web material. At the outlet of the singlefacer, pressure is used to thermally glue the corrugated paper web to a smooth paper web, also referred to as a "liner".
Examples of prior art single facers are disclosed in US8714223, EP1362691, and reference may be made to US8714223, EP1362691 for further details.
Typically, a corrugated cardboard production line is provided with two or more single facers to produce single flute or multi-flute corrugated cardboard, as required by each production order.
The shape and size of the flutes of the corrugated cardboard may vary according to the production order. Typically, the orders are relatively small, i.e., each order requires the production of a limited number of corrugated paperboard. It is therefore necessary to replace the corrugating rollers even at a certain frequency in order to produce corrugated cardboard having the characteristics required for each single order.
In order to simplify the replacement of the corrugating rollers, it is known to provide so-called magazines (cartridges), hereinafter denoted "corrugating units", each comprising a pair of corrugating rollers mounted on heads integral with each other; the corrugation rollers of one corrugation unit are engaged with each other and have been mounted on the receiving and supporting structure. This enables them to be replaced quickly.
Apparatuses for moving and replacing the corrugating unit in single facers have been produced. WO-A-2009107439 discloses an operator guided motorized carriage for moving and transferring A corrugating unit in an apparatus.
EP1775115 discloses a single facer provided with a lateral box (magzine). Two corrugated units may be arranged in a lateral box, which may be used alternately with each other in a single facer placed next to the box. A translation guide is provided to replace the bellows unit in use with a spare bellows unit in the cassette. The cartridge comprises two seats for the corrugated unit, each seat being provided with a pair of guides. The guides are selectively aligned with a pair of guides integral with the facer. A translation mechanism (which includes a motor controlling a rack and pinion gear fixed relative to the singlefacer) translates the single corrugating unit along a guide. In order to translate the corrugating unit from the single facer to the cassette, and vice versa, the corresponding guides of the cassette are aligned with the guides integral with the single facer to form a continuous guide system.
Said known mechanisms are not particularly flexible and have some problems. In particular, the movement mechanism makes it necessary to place the cartridge very close to the single facer. Furthermore, the corrugating unit is transferred by running on guides located partly on the box and partly in the single facer. Once the corrugating unit has been inserted into the singlefacer, it must be lifted from the guide and held in the operating position at a height higher than the height of the guide. Since the corrugating unit is very heavy and also applies a vertical pushing force directed downwards to glue the corrugated paper web to the smooth paper web, an actuator capable of generating a very high pushing force (usually a hydraulic piston-cylinder actuator) is required to maintain the corrugating unit in the correct operating position. An unexpected decrease in pressure of the fluid in the cylinder of the actuator may result in an emergency shutdown of the single facer.
DE 202007004668 discloses an apparatus comprising a single facer having a support structure adapted to receive a corrugating unit. The corrugating unit includes a first corrugating roller and a second corrugating roller which are engaged with each other. The apparatus further comprises a cassette containing a plurality of seats for receiving the corrugation unit and being movable along the guide. Each corrugation unit has wheels and can be moved from the singlefacer to the cassette and vice versa. The cassettes are moved along the singlefacer at a distance from the singlefacer so that each corrugation unit can be transferred directly from the singlefacer into the cassette and vice versa using wheels (each corrugation unit is provided with wheels). Cumbersome retaining devices are required to lock the corrugated unit in the singlefacer to prevent movement of the corrugated unit relative to the singlefacer when in use.
Therefore, there is a need for an apparatus that can manage and replace the corrugated unit more simply and efficiently.
Disclosure of Invention
According to one aspect, an apparatus for producing corrugated paperboard is provided, the apparatus comprising at least one single facer having a support structure adapted to receive a corrugation unit having a first corrugation roller and a second corrugation roller engaged with each other. The apparatus also includes a cassette with a plurality of receptacles for receiving the corrugated units. When the corrugating roller is positioned in a single facer, the cartridge is movable along a first guide, preferably in a direction orthogonal to the axis of the corrugating roller. A shuttle is associated with the single facer, the shuttle being adapted to move between the single facer and the guides of the cartridge and to transfer a ripple unit from the single facer to the cartridge and vice versa. The movement of the shuttle is preferably orthogonal to the movement of the cartridge.
Thus, unlike some devices of the prior art, the singlefacer is provided with its own shuttle that moves back and forth from the singlefacer to the cartridge, and vice versa, to transfer the corrugated unit from the singlefacer to the cartridge, and vice versa. The shuttle may pick up a ripple unit from the single facer, transfer the ripple unit from the single facer to the cassette and release the ripple unit into a free one of the seats of the cassette. The shuttle may access one of the ripple units from the cassette, transfer the ripple unit from the cassette to the single facer, and release the ripple unit in the single facer.
The corrugating units need not be provided with their own wheels and motors to move back and forth from the singlefacer to the cassette and vice versa. Furthermore, the corrugation unit can be locked more safely and more easily in the single facer in a simple and reliable manner.
In this way, a highly flexible management of the corrugation unit may be obtained.
In a particularly advantageous embodiment, the shuttle comprises a lifting member adapted to lift the bellows unit from the support structure of the single facer and from the cartridge, and to lower the bellows unit onto the support structure of the single facer and onto the cartridge. Thus, when the corrugating unit is in the operating position in the single facer, it is positioned at a lower level than it is positioned when it is on the shuttle. This avoids the need for complex actuators that push the corrugating unit upwards when it is operated in the single facer. This makes the device safer and more reliable, and moreover suffers less downtime, in addition to having a simplification from a mechanical point of view.
Advantageously, the shuttle is preferably movable along a second guide extending between the singlefacer and the first guide. The cartridge guide and the shuttle guide may be arranged substantially orthogonal to each other and may be substantially in the same plane and intersect each other. In this way, it is possible to reduce the digging work required for installing the guides and, at the same time, to reduce their occupation space above the floor. This results in a reduced cost of implementation of the apparatus and reduces the presence of obstacles that may negatively affect the passage or transport of vehicles, materials and personnel in the apparatus.
In an advantageous embodiment, the apparatus may comprise a plurality of single facers arranged in sequence along an alignment direction parallel to the first guide. Each single facer may comprise a respective shuttle movable between the single facer and the first guide, the shuttle being adapted to transfer a corrugated unit from the respective single facer to a cartridge, and vice versa. The cartridge may be adapted to be selectively positioned in alignment with one or the other of the single facers to transfer a ripple unit from the cartridge to the respective single facer via the respective shuttle, and vice versa.
According to another aspect, a method for inserting a corrugating unit into a single facer, the corrugating unit including a first corrugating roller and a second corrugating roller in meshing engagement with each other, the method including the steps of:
positioning a cassette comprising a plurality of receptacles for a corrugated unit such that one of the receptacles is aligned with the single facer;
by a shuttle movable from the singlefacer to the cartridge and vice versa:
picking up a ripple unit positioned in the nest aligned with the single facer and transferring the ripple unit into the single facer; or
A ripple unit positioned in the single facer is picked up and transferred into the cassette.
According to another aspect, an apparatus for producing corrugated paperboard is described, the apparatus comprising a plurality of single facers, each single facer comprising a support structure adapted to receive a corrugating unit comprising a first corrugating roller and a second corrugating roller in meshing engagement with each other. The single facer is aligned according to an alignment direction. The apparatus also includes a cassette having a plurality of seats for receiving the bellows units and movable along the guide. The guide extends parallel to the alignment direction of the single facers and has a length such that the cassette can transfer the corrugated unit to one or the other of each of the single facers. According to an embodiment, the transfer of the corrugated unit from the cartridge to one or the other of the singlefacers (and vice versa) can be performed by a shuttle system of the type defined above or by other systems and mechanisms, such as those described in the prior art mentioned in the introduction of the present description. In this case, with respect to the prior art, the apparatus is particularly characterized in that the cassette is also used to transfer the corrugating unit from one to another of a plurality of single facers placed in sequence. Thus, the cassette can serve multiple single facers and allow the ripple unit to be exchanged and shared between multiple single facers of the same apparatus.
Drawings
Further preferred embodiments and possible features of the devices and methods disclosed herein are shown below with reference to the drawings.
The invention will be better understood by following the description and accompanying drawings, which illustrate exemplary and non-limiting embodiments of the invention. More particularly, in the drawings:
FIG. 1 shows a schematic plan view of a production line with two single facers and one magazine;
2A, 2B, 2C show plan views of the cassette and single facer in three different mutual positions;
FIG. 3A shows an isometric view of a single facer and a cassette aligned with the single facer in an operating position;
FIG. 3B shows a view B-B according to FIG. 3A;
FIG. 4A shows an isometric view similar to FIG. 3A in a subsequent step of the cycle of replacing the corrugated unit;
FIG. 4B shows a view B-B according to FIG. 4A;
FIG. 5A shows an isometric view similar to FIGS. 3A, 4A at a subsequent step in the cycle of replacing the corrugated unit;
FIG. 5B shows a view B-B according to FIG. 5A;
FIG. 6A shows an isometric view similar to FIGS. 3A, 4A, 5A at a subsequent step in the cycle of replacing the corrugated unit;
FIG. 6B shows a view B-B according to FIG. 6A;
FIG. 7A shows an isometric view similar to FIGS. 3A, 4A, 5A, 6A at a subsequent step in the cycle of replacing the corrugated unit;
FIG. 7B shows a view B-B according to FIG. 7A;
FIG. 8 shows an isometric view of a corrugated unit;
figure 9 shows a cross-section of a plane orthogonal to the axis of the corrugating roller according to line IX-IX of figure 8;
FIG. 10 shows an isometric view of a support structure of a single facer;
figure 11 shows a cross-section according to line XI-XI of figure 10 in a vertical plane parallel to the axis of the corrugating roller;
figure 12 shows a section according to the longitudinal plane of the shuttle with the bellows unit;
figure 13 shows an isometric view of an auxiliary carrier for moving the corrugating unit; and
fig. 14 shows a side view of the carrier of fig. 13.
Detailed Description
Fig. 1 shows a plan view of an apparatus 1 for producing corrugated cardboard, wherein the elements of the apparatus which are useful for a better understanding of the invention are shown only schematically. In the example shown in fig. 1, the apparatus 1 comprises two
On one side of the sequentially arranged singlefacers 3, a
As will be clarified below, the
The
In order to transfer the corrugated unit (not shown in fig. 1) from the
Advantageously, the
In this way, for example, the conveyor can be easily arranged to transfer the rolls into and out of the production line in which the unwinder is inserted, without encountering obstacles.
Each
In the example of fig. 1, the
The use of a
Furthermore, it is also possible to have an apparatus with only one single facer served by a cartridge, or to have several single facers and several cartridges. For example, a
In certain embodiments, the
This is particularly advantageous when the cartridge serves only one single facer, since it allows one or another of a plurality of corrugated units to be loaded onto the single facer, one corrugated unit usually being in an operating position in the single facer, while the other corrugated units are positioned in the seats of the cartridge.
In the figures following fig. 1, the apparatus 1 is represented as being limited to one
The structure of the device according to the invention will be described in more detail below with particular reference to fig. 2A, 3B, 8, 9, 10, 11, 12, 13 and 14. The replacement cycle of the ripple unit will be described later with reference to the sequence of fig. 2A, 2B, 2C, and 3A-7B.
The apparatus 1 of fig. 2A and the following figures comprises a
In particular, in the embodiment shown, the
The
The construction of the
Reference numeral 20.8 denotes four legs for supporting the
Each of the two heads is fitted with two
The support structure 31 of the
Each
Advantageously, the pairs of wheels 11.3 and 11.4 are arranged so that their axes are close to each other, so as to provide a continuous support on the rail 10 (along which the
Advantageously, the
The support surfaces 33, 35 form a support for the
Fig. 2A, 2B, 2C show in plan view the movements that can be performed by the
In fig. 2B, the
In fig. 2C, the
From the position of fig. 2C, the
Fig. 3A, 3B, 4A, 4B, 5A, 5B, 6A, 6B and 7A, 7B show, by way of example, a transfer cycle of a bellows unit (in the example shown, bellows
In fig. 3A, 3B, the
As mentioned, the side panels 31.2 are open to allow insertion of the
The auxiliary carrier may advantageously comprise auxiliary lifting members 59, 61, which auxiliary lifting members 59, 61 may be configured as the aforementioned lifting members 30 or in any other suitable manner. Lifting member 30 may include a vertically movable surface that lifts and lowers
The auxiliary carriage 51 can be used both for inserting the
To facilitate the insertion of the auxiliary carriage 51 into the
Advantageously, the platform 75 has a small thickness so as to be able to lie approximately flush with the floor P without the need to dig a pit to accommodate it, but only slightly lower the floor at P1 if necessary (fig. 11).
In the embodiment shown, the platform 75 is suspended from the frame structure 73 by tie rods 77 in order to allow the platform 75 to float relative to the floor P according to arrow f 75. In this way, there is no need to accommodate the guide members of the platform 75 in the floor P, and there is no need to dig. Essentially, the platform 75 is suspended in pendulum fashion from the frame structure 73 by tie rods 77. The swinging motion of the platform 75 is limited to a few degrees and therefore the platform remains substantially parallel to the floor P during the oscillating motion.
A fixed guide 81 is associated with the platform 75, is integral with the floor P and is adapted to generate a thrust on the auxiliary carriage 51 in a direction transverse to the direction of approach and insertion of the auxiliary carriage into the single-
With the arrangement, although the weight of the
The above-described embodiment of the corrugated board manufacturing apparatus 1 allows a number of advantages to be obtained. The presence of the
By using a lifting member in the
Using the
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