Perforated box device and stretching device

Abstract

To provide a perforated box device and a stretching device, which allow a perforated box to be easily attached and removed.SOLUTION: There is provided a perforated box device (16) for an oven (12) of a stretching device (10), which comprises a perforated box (18) and a supporting device (34) for supporting the perforated box (18). The supporting device (34) includes a first support (52) and a second support (54). The first support (52) adjusts a height thereof and adjusts a position of the perforated box (18) between an operating position and an assembly position, and a height of a first end portion of the perforated box (18) in the assembly position is adjusted to be lower than the height in the operating position. There is also provided the stretching device (10).SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a drawing apparatus and a nozzle box device for a heating furnace of the drawing apparatus having a heating furnace. [Background technology]

[0002] Stretching apparatuses are used in particular for the production of plastic films. The film to be stretched is usually moved in the stretching direction through the heating oven of the stretching apparatus by a film conveying device. The film to be stretched is heated before the stretching process and is kept at a given temperature during and after the stretching process. The stretched film is then cooled in the heating oven.

[0003] A perforated box is disposed laterally along the membrane and has a plurality of outlet openings facing the membrane, and the temperature of the furnace and the membrane is controlled by heated air blown through the outlet openings of the perforated box. Air, which is supplied through the perforated box and temperature controlled, is blown through the outlet openings of the perforated box toward the membrane to heat or cool it.

[0004] Since the conventional perforated boxes are fixed or attached to supports located above or below the membrane, it is very difficult to access the perforated boxes. When a failure occurs in the heating furnace and one of the perforated boxes needs to be removed, another perforated box must be frequently removed to reach the desired perforated box. This results in a time-consuming removal of the perforated boxes from the heating furnace, which extends the downtime of the non-operating stretching device. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a perforated box device and a stretching device which allow the perforated box to be easily attached and detached. [Means for solving the problem]

[0006] The object of the present invention is solved by an open perforated box device for a stretching apparatus, in particular a transverse orienter, a machine direction orienter and / or a stretching apparatus comprising a support device for a perforated box. The support device comprises a first support and a second support. The perforated box is connected to the first support and the second support. The first support is designed to adjust the height of the perforated box between an operating position and an assembly position, i.e. to adjust the vertical position, and the first end of the perforated box is arranged in the assembly position which is lower than the operating position.

[0007] By adjusting the vertical position of the first support, the perforated boxes can be removed laterally individually, in particular along a removal path provided below the transport rail of the thin film transport device, so that the perforated boxes can be quickly removed from the stretching device and the stretching device equipped with the perforated boxes can be quickly re-installed.

[0008] The mounting (connection) operation of the perforated box to the support may also occur indirectly.

[0009] For example, the perforated box has a first edge surface that is mounted (connected) to a first support and a second edge surface that is mounted (connected) laterally (in the longitudinal direction of the perforated box) to a second support. The first end is located on a first side of the perforated box.

[0010] The direct or indirect connection between the perforated box and the first support may be located at a first edge of the first end face of the perforated box, adjacent to the end face or displaced towards the centre.

[0011] The direct or indirect connection between the perforated box and the second support may be located at a second edge of the second end face of the perforated box, adjacent the end face or displaced towards the centre.

[0012] In an embodiment of the present invention, a support device is provided for mounting a perforated box on a rail having a first edge surface connected to the first support and a second edge surface connected to the second support. The first end of the rail is located at an assembly position lower than the operating position, thereby improving the stability of the perforated box device.

[0013] The support device may be provided with one or more rails, one or more first supports and one or more second supports and optionally a handling device.

[0014] For example, a first edge surface of the rail is connected to the first support and a second edge surface of the rail is connected, in particular laterally (in the longitudinal direction of the rail). The first end is arranged at the first edge of the rail.

[0015] The direct or indirect connection between the rail and the first support may be located on a first side on a first end face of the rail, on an adjacent end face or offset relative to the centre.

[0016] The direct or indirect connection between the rail and the second support may be located on the second side, on the second end face of the rail, on an adjacent end face or offset relative to the center.

[0017] The rail may be directly connected to the support, or the rail may be indirectly connected to the support via a beam or the like.

[0018] It is also possible to provide the support device with a frame that is directly connected to the support, and to attach the frame to the rail.

[0019] The first and second ends of the perforated box may be coaxially disposed corresponding to the first or second ends of the rail.

[0020] In embodiments of the invention, the rails and / or perforated boxes may be positioned horizontally in the operating position to provide a particularly uniform jet of temperature controlled air onto the membrane.

[0021] The removal structure can be further simplified if the rail and / or the perforated box are arranged at an incline with respect to the horizontal plane during adjustment from the operating position to the assembly position.

[0022] In the embodiment of the present invention, the first support is provided with two connecting rods pivotally connected to each other, and at least one connecting rod pivotally connected to the rail and / or the perforated box is pivotally connected, and in particular, the connecting rods stand vertically and are aligned with each other in the operating position. In this way, a stable first support can be provided with a simple structure.

[0023] A connecting rod is mechanically attached at a predetermined location in the operating position.

[0024] The second support can be constituted by a static support and / or a rail and / or a perforated box, and in particular the second edge surface, e.g. the second end of the rail and / or the perforated box, can be pivotally attached to the second support, simplifying the structure of the support device.

[0025] A static support is a structure that does not adjust the height of the support. Thus, the second support may include or be a vertical connecting rod.

[0026] However, the second support may also be designed to be height adjustable: both ends of the rail and / or the perforated box can be arranged in a lower assembly position compared to the working position.

[0027] In an embodiment of the invention, the porous box is slidably arranged on the rail and / or removably arranged from the support device through the first end of the rail, which further simplifies removal and installation of the porous box.

[0028] In an embodiment of the present invention, the support device is provided with two first supports and a single first beam arranged in the extension direction, and the first beam in the extension direction is connected to the two first supports to improve the stability of the support device.

[0029] The extension beams are connected to one or more transversely disposed cross beams that form a frame.

[0030] For example, the support device may include two second supports and one second beam arranged in the extension direction and connecting the two second supports to each other, thereby improving the stability of the support device.

[0031] The rails and / or the perforated box may be arranged and / or attached laterally to first and / or second beams arranged in the extension direction to further increase the stability of the support device.

[0032] Via, in particular, a first and / or a second beam arranged in the extension direction, the rail and / or the perforated box are attached to the first and / or second support.

[0033] The second beam includes a connection device having a pivot axis in the extension direction, so that the rail and / or the perforated box can be rotatably mounted on the second support.

[0034] The support device of an embodiment of the present invention comprises a plurality of rails and / or porous boxes aligned parallel to each other in the extension direction and mounted on adjacent first and / or second beams, and the plurality of porous boxes are arranged on the support device.

[0035] The support device may be provided with a simple operating device for adjusting the height of the first support.

[0036] Advantageously, mounting parts of the control device, or the entire control device, as needed instead of permanently mounting the control device to a separate support device reduces the number of control devices required.

[0037] In addition, the operating device may be provided with a drive unit such as an electric motor that adjusts the height of the support by power drive.

[0038] When the operating device according to the embodiment of the present invention is provided with a screw jack including a screw support shaft and a support shaft nut, the height of the first support can be reliably adjusted.

[0039] For example, the operating device is disposed on a first edge of the support device. A support nut can be attached to the first beam in the extension direction.

[0040] An embodiment of the invention is also proposed for a perforated box device comprising a number of perforated boxes which are aligned adjacent to one another and parallel to one another in the stretching direction. The perforated boxes which make up the perforated box device can be moved simultaneously to the assembly position to further reduce the downtime of the stretching device.

[0041] In particular, each perforated box is arranged on a corresponding rail, for example, four perforated boxes are provided on one support device.

[0042] A separate lid is arranged between two adjacent perforated boxes and / or the perforated edge of the lid projects toward the adjacent perforated box on the outlet side in the air suction direction of the perforated box. The assembly time is further reduced by the perforated edge which constitutes part of the perforated box.

[0043] The lid may be, for example, a perforated or non-perforated lid.

[0044] For example, air is ejected toward the thin film from the outlet side at the top of the perforated box.

[0045] For example, the perforated edges of adjacent perforated boxes may completely cover the gap between the adjacent perforated boxes and / or abut one another.

[0046] In an embodiment of the invention, the perforated box comprises a number of outlets on the outside of the perforated box and an inlet side where the air inlet is located, the inlet side being formed on the second side of the perforated box, thus ensuring a uniform and reliable air flow over the membrane.

[0047] For example, a porous box may include a base and an additional chamber attached to the base and having an outlet. In this manner, the porous box may be used in a wide range of applications.

[0048] The object of the invention is achieved by a stretching apparatus, in particular a transverse direction orienter, a machine direction orienter and / or a simultaneous stretching apparatus, which comprises a thin film conveying device and a heating furnace with said perforated box device, in which the rails and / or the perforated boxes are arranged transversely to the stretching direction.

[0049] The features and advantages of the support device described apply equally to the stretching device and to the support device.

[0050] The perforated box device and the perforated box are in particular arranged below the membrane transport device and / or below the membrane.

[0051] The furnace and support apparatus have a draw direction which corresponds to the direction in which the film is transported during operation of the stretching apparatus, and a transverse direction which is horizontal to the draw direction.

[0052] For example, the first side, second side, first edge and second edge of the rail and / or the perforated box are lateral sides and edges. The first side and first end of the rail, i.e., the first side of the support device, is located at a position referred to as the assembly side of the stretching device.

[0053] For example, a furnace has a support device, in particular a hearth, on which supports are attached.

[0054] The threaded shaft of the operating device is pivotally attached to the hearth or other supporting device.

[0055] In an embodiment of the present invention, the thin film transport device has two transport rails arranged laterally spaced apart from each other, and the perforated box can be removed from the heating furnace at the assembly position of the support device along a removal path arranged below one of the transport rails and / or the perforated box can be placed within at least a portion of the gap at the operating position of the support device.

[0056] In particular, the outlet side of the perforated box is provided at the outlet of the gap.

[0057] In an embodiment of the invention, the stretching device connects the inlet side of the perforated box to an air inlet passage (air supply side) on the support device in the operating position, but the perforated box can be removed from the heating furnace independently of the air inlet passage. [Brief description of the drawings]

[0058] Other advantages and characteristics of the present invention will become apparent from the following description taken in conjunction with the accompanying drawings, in which: FIG. [Figure 1] FIG. 1 is a plan view of a stretching device according to an embodiment of the present invention; [Diagram 2] 1 is a schematic partial cross-sectional view of a stretching device with a perforated box device arranged in an operating position according to an embodiment of the present invention; FIG. [Diagram 3] An enlarged cross-sectional view of two adjacent perforated boxes in the perforated box device shown in FIG. [Figure 4] FIG. 3 is a schematic partial cross-sectional view of FIG. 2 with the perforated box device in the assembled position; [Diagram 5] FIG. 2 is a perspective view of a perforated box device in an assembly position according to a second embodiment of the present invention; [Figure 6] FIG. 3 is a schematic partial cross-sectional view of a stretching device with a perforated box device in an operating position according to a third embodiment of the invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0059] A stretching apparatus 10 of the present invention is shown diagrammatically in FIG.

[0060] The illustrated stretching device of the first embodiment is designated as a transverse direction orienter (TDO). Instead of a transverse direction orienter, the stretching device may be considered as a machine direction orienter or a simultaneous stretching device.

[0061] The stretching apparatus 10 includes a heating furnace 12, a thin film conveying apparatus 14, and a nozzle box apparatus 16 having at least one nozzle box 18.

[0062] The furnace 12 has a stretching direction R corresponding to the transport direction of the thin film F to be stretched. The lateral direction Q of the furnace 12 is a lateral direction parallel to the stretching direction R, and the vertical direction H is perpendicular to the stretching direction R and the lateral direction Q.

[0063] The heating furnace 12 is arranged along the stretching direction R and has a number of different temperature zones for treating the thin film F to be stretched.

[0064] The thin film F is heated in a first zone 22 constituting a preheating zone. In the subsequent second zone (stretching zone) 24, the thin film F is stretched in the transverse direction Q, so that the lateral width of the thin film F at the outlet of the second zone 24 is greater than the initial lateral width of the thin film F supplied to the second zone.

[0065] After completing the stretching process in the second region 24, the thin film F passes through the third region (also called the "heat treatment region," "reheating region," and / or "annealing region") 26, where the internal residual stress in the thin film F is relaxed or removed at high temperatures.

[0066] The thin film F then passes through a fourth region 28 and a fifth region (the "cooling region") 30, which cools the thin film F.

[0067] A fourth region 28, which constitutes a neutral region, separates the third region 26 from the fifth region 30. The neutral region is, for example, a spatial region that does not allow any ventilation.

[0068] The thin film transport device 14 has two transport rails 32 laid out in a known manner, mirror-symmetrically and at a fixed distance from each other with respect to the mid-plane M of the transport device 10 or heating device 12, and at least a portion of the transport rails 32 is positioned within the heating furnace 12.

[0069] An inlet area for feeding the film F into the stretching device 10 as well as an outlet area for discharging the film F from the stretching device 10 are connected to the exterior of the furnace 12 by the transfer rail 32 .

[0070] The thin film transport device 14 is provided with a plurality of gripping devices (not shown) that move along the transport rail 32, and the thin film F, which is gripped by the gripping devices in a known manner, is transported and moved in the tensile direction R within the heating furnace 12.

[0071] For simplicity, a perforated box arrangement 16, shown in dashed lines in FIG.

[0072] The perforated box device 16 can be used to heat or cool the membrane F as well as to control the temperature of the membrane F by means of a temperature-controlling airflow directed at the membrane F.

[0073] Thus, the first zone 22, the second zone 24, and the third zone 26 are provided with perforated box devices 16 for heating the film F, and the fifth zone 30 is provided for cooling the film F. Not all perforated box devices 16 and all perforated boxes 18 of the stretching apparatus 10 for stretching the film F are shown in FIG.

[0074] FIG. 2 shows an area of ​​one perforated box apparatus 16 which forms part of stretching apparatus 10, with the relevant parts of stretching apparatus 10 shown in simplified form for the sake of simplicity.

[0075] FIG. 2 shows a thin film transport device 14 that transports a thin film F between a pair of transport rails 32, and a perforated box device 16 provided below the thin film transport device 14.

[0076] The perforated box apparatus 16 includes a support apparatus 34 and a perforated box 18 attached to the support apparatus 34 .

[0077] In an actual stretching apparatus 10, multiple support devices 34 and multiple perforated boxes 18 are provided, however, only a single support device 34 and a single perforated box 18 are shown diagrammatically in FIG.

[0078] A perforated box 18 is arranged coaxially with the transverse direction Q and adjacent to the stretching direction R. The perforated boxes 18 are in particular arranged parallel to one another.

[0079] Each porous box 18 is hollow, as is known in the art, and has an inlet side 36 and an outlet side 38. The outlet side 38 is located, for example, at the top of the porous box 18.

[0080] An air inlet 40 provided on the inlet side 36 of the perforated box 18 is connected to an air inlet passage 42 of the drawing device 10 .

[0081] A number of outlet openings 44 facing the membrane F are provided on the outlet side 38 of the porous box 18 .

[0082] In the lateral direction Q of the perforated box 18, there are provided a first edge and a first end (left side in FIG. 2) and a second edge and a second end (right side in FIG. 2).

[0083] The first edge and the second edge of the perforated box 18 define regions on both sides of the lateral center Q of the perforated box 18 (left and right sides of the center in FIG. 2).

[0084] The perforated box 18 comprises a composite element including a base 19 and an additional chamber 20 attached to the base 19 .

[0085] An additional chamber 20 mounted on top of the base 19 is provided with an outlet port 44 .

[0086] In particular, the substrate 19 is not disposed in the gap between the two transport rails 32, but the additional chamber 20 is disposed in the gap between the two transport rails 32.

[0087] 2 flows into the porous box 18 through the air inlet 40 and the air introduction passage 42 during the operation of the stretching device 10. The thin film F is then heated or cooled by the temperature-controlled airflow that passes through the air outlet 44 and is uniformly ejected onto the thin film F.

[0088] The temperature control airflow returning from the membrane F flows in the gaps 48 between adjacent perforated boxes 18. Adjacent perforated boxes 18 in cross section along the tensile direction R are shown diagrammatically in FIG.

[0089] A gap 48 through which the temperature control airflow flows is formed in the space A between adjacently arranged porous boxes 18 .

[0090] In the embodiment shown, the two perforated edges 46 of the lid on either side of the perforated box 18 on the outlet side 38 are provided over the entire lateral length Q of the perforated box 18 or over a partial lateral area Q.

[0091] In particular, the perforated edge 46 of the lid is attached to the additional chamber 20 .

[0092] Of a pair of perforated edges 46 provided at the top of the additional chamber 20, one perforated edge 46 is arranged in the extension direction R, and the other perforated edge 46 is arranged in the opposite direction to the extension direction R, so that the perforated edges 46 are arranged on both sides of the extension direction R.

[0093] The length of each perforated edge 46 arranged in the same direction and opposite direction to the stretching direction R is the same, for example, half the interval A between the perforated boxes 18, and the opposing perforated edges 46 of adjacent perforated boxes 18 completely cover the gap 48 between the adjacent perforated boxes 18, with some play or assembly clearance being provided between the adjacent perforated edges 46. Also, the adjacent perforated edges 46 may be abutted against each other.

[0094] The perforated boxes 18 themselves do not have any perforated edges 46, but rather a separate lid, perforated or non-perforated, is provided covering the gaps 48 between adjacent perforated boxes 18. Also, the gaps 48 are open and uncovered.

[0095] The porous box 18, and in particular the additional chamber 20, shown in FIG. 2, is disposed and protrudes into the gap between a pair of transfer rails 32 of the membrane transport apparatus 14 when in operation.

[0096] In particular, a plurality of outlet ports 44 and outlet sides 38 are spaced vertically and laterally Q relative to the film F between the transport rails 32 .

[0097] The support device 34, which is arranged in the operating position shown in Figure 2, includes a rail 50, a first support 52 and a second support 54 which support the rail 50 at a first edge and a second edge of the perforated box 18, and an operating device 56 which actuates the first support 52.

[0098] The rail 50 and the perforated box 18 are arranged in a lateral direction Q.

[0099] For example, each support device 34 is provided for each perforated box 18 .

[0100] The porous box 18, which is slidably disposed on the rails 50 of the support device 34, slides along the rails 50 in the lateral direction Q. However, the porous box 18, which is in the operating position for ejecting the temperature-controlled airflow from the outlet 44, is fixed in an appropriate position on the rails 50 to prevent the porous box 18 from moving unintentionally.

[0101] In the illustrated embodiment, the rail 50 and the perforated box 18 disposed on the rail 50 are aligned horizontally in an operating position to emit a temperature controlled airflow from the outlet 44 .

[0102] The rail 50 has a first edge (left edge) constituting a first end (left end) in the lateral direction Q connected to the first support 52, and a second edge (right edge) constituting a second end (right end) in the lateral direction Q connected to the second support 54.

[0103] A first edge and a first end of the perforated box 18 correspond to a first edge and a first end of the rail 50. Similarly, a second edge and a second end of the perforated box 18 correspond to a second edge and a second end of the rail 50.

[0104] The air supply 42 of the stretching apparatus 10 is positioned at the second edge of the rail 50 and the overall support 34 , and the inlet side 36 of the perforated box 18 is also aligned with the second end of the rail 50 .

[0105] A second end of the rail 50 is pivotally mounted to a second support 54 about a pivot axis that is attached in the extension direction R so that the rail 50 can rotate.

[0106] The second support 54 is a fixed support with no height adjustment of the second support 54. The second support 54 can be considered a vertical support.

[0107] For example, the second support 54 is attached to the bottom 58 of the furnace 12 .

[0108] The second support 54 can also be designed to be height adjustable, for example, like the first support 52. In this case, both ends of the rail 50 can be arranged in an assembly position lower than the operating position in FIG.

[0109] However, the height of the first support 52 can also be set to be adjustable.

[0110] The first support 52 in the illustrated embodiment includes a first link 60 and a second link 62 .

[0111] The lower end of the first connecting rod 60 is pivotally attached to the hearth 58 , and the second connecting rod 62 is pivotally attached between the first connecting rod 60 and the second connecting rod 62 and between the second connecting rod 62 and the rail 50 .

[0112] That is, the second connecting rod 62 is pivotally attached at a first end, i.e., the lower end, to the first connecting rod 60 and at a second end, i.e., the upper end, to the rail 50 .

[0113] The rotatable three-pivot articulation mechanism of the first articulation rod 60 and the second articulation rod 62 are arranged parallel to each other in the extension direction R.

[0114] 2 are arranged coaxially and perpendicularly to one another in the operating position of the support device 34. In the illustrated operating position, the first connecting rod 60 and the second connecting rod 62 can be mechanically fixed to one another.

[0115] The height of the first support 52, i.e., the distance between the top end of the second connecting rod 62 and the bottom end of the first connecting rod 60, can be adjusted.

[0116] In the illustrated embodiment, the operating device 56 for adjusting the height of the first support 52 is constituted by a screw jack having a screw shaft 64 and a shaft nut 66 attached to the screw shaft 64 .

[0117] Parts of the operating device 56, or the operating device 56 as a whole, are not permanently attached to a separate support device 34, but may be attached only to the support device 34 as required.

[0118] A drive device 68 such as an electric motor for actuating the screw shaft 64 may be optionally provided in the operating device 56 .

[0119] By providing a drive device 68, a device other than the threaded support shaft 64 can be used to adjust the height of the support.

[0120] A threaded spindle 64 is attached via a spindle nut 66 that is fixedly connected to a first edge of the rail 50 .

[0121] The screw shaft 64 is pivotally connected to the hearth 58 by a pivot connection arranged in the extension direction R.

[0122] In this manner, by rotating or operating the screw support shaft 64, the support nut 66 is raised or lowered, whereby the height position of the first support 52 can be adjusted.

[0123] The operating device 56 can move the support device 34 from the operating position shown in Fig. 2 to the assembly position shown in Fig. 4. For this purpose, for example, when the screw support shaft 64 is rotated and operated by the driving device 68, the first connecting rod 60 and the second connecting rod 62 are bent relative to each other, and the first support 52 is shortened. As a result, the first end of the rail 50 is lowered, so that the rail 50 is inclined relative to the second support 54. In this way, when the support device 34 is displaced from the operating position to the assembly position, the rail 50 is inclined relative to the horizontal plane.

[0124] The first ends (left ends) of the rail 50 and the porous box 18 in the assembly position are significantly lower than the second ends (right ends) of the rail 50 and the porous box 18 in the operating position.

[0125] The perforated box 18 in its assembled position can now be removed from the support 34 and the furnace 12 .

[0126] The porous box 18 is slid from the rails 50 of the support device 34 down the transfer rails 32 of the thin film transport device 14 and the porous box 18 is removed.

[0127] If an auxiliary rail 70 of the stretching device 10 is attached to the first edge (left edge) of the rail 50 and the perforated boxes 18 are continuously transported, the operation of removing the perforated boxes 18 can be simplified.

[0128] When the height of the first support 52 is lowered, a removal path for the perforated boxes 18 can be provided below one of the transfer rails 32 of the thin film transport device 14 to facilitate removal of each perforated box 18 from the heating furnace 12 of the stretching device 10.

[0129] The porous box 18 can be slid on the auxiliary rail 70 of the rail 50 of the support device 34 to mount the porous box 18 on the rail 50 and fix the porous box 18 at a predetermined position on the rail 50.

[0130] Thereafter, the operating device 56 can be again actuated to increase the height of the first support 52 and raise the first end of the rail 50 to the height of the second end of the rail 50. In this way, the porous box 18 is inserted into the gap between the two transfer rails 32 of the thin film transport device 14 until the operating position shown in FIG.

[0131] FIG. 5 shows a second embodiment of a support device 34 for use in the present invention.

[0132] The structure of the support device 34 of the second embodiment substantially corresponds to that of the first embodiment, but differs only in the following points. The second embodiment will be described with reference to the drawings, using the same reference numerals as in the drawings of the first embodiment.

[0133] 5 shows the support device 34 in an assembled position. The support device 34 for the perforated box 18 of the second embodiment differs from the support device 34 of the first embodiment in that the perforated box 18 is provided with a number of rails 50.

[0134] In the illustrated embodiment, the support apparatus 34 is provided with a number of rails 50 for receiving the perforated boxes 18, and four rails 50 and four perforated boxes 18 are shown.

[0135] The two first supports 52 provided in the support device 34 of the second embodiment are connected to each other by a first beam 72 arranged in the extension direction R.

[0136] A first edge (left edge) of the rail 50 is attached to the first beam 72. In particular, the rail 50 is disposed at the first end (left end) of the first beam 72.

[0137] Furthermore, the support device 34 includes two second supports 54 and a second beam 74 connecting the two second supports 54 to each other.

[0138] For example, the second end of the rail 50 is pivotally attached to the second beam 74 .

[0139] The rail 50 is disposed transversely relative to a first beam 72 and a second beam 74 which are disposed in the extension direction R.

[0140] For example, at least one or two frames (shown in dotted lines in FIG. 5 ) are provided that connect the first beam 72 and the second beam 74. The support device 34 may be provided with a frame including the first beam 72 and the second beam 74, referred to as at least one cross (or cross) beam.

[0141] A support nut 66 of the operating device 56 is provided in a portion of the first beam 72, particularly in the center of the extension direction R of the first beam 72.

[0142] In this embodiment, the operating device 56 may be provided removably on a separate support device 34, rather than being permanently fixed.

[0143] By operating the operating device 56, the first beam 72 and the first end of the entire rail 50 can be moved upward or downward simultaneously.

[0144] The second beam 74 includes a connecting portion (FIG. 4) having a pivot axis in the extension direction R that axially connects the second end of the rail 50 to the second support 54 .

[0145] The operation of the support device 34 of the second embodiment from the operating position to the assembly position and vice versa corresponds to the operating mode described for the first embodiment.

[0146] The support device 34 of the second embodiment allows multiple perforated boxes 18 to be moved simultaneously to the assembly location, further speeding up the moving process.

[0147] A number of different embodiments of the present invention, which correspond to the first embodiment, are shown in Fig. 6. The same reference numerals are used for structurally and functionally equivalent parts.

[0148] The shape of the porous box 18 in the embodiment shown in FIG. 6 differs from that in the first embodiment.

[0149] The porous box 18 of Figure 6 has only a base body 19 without the additional chamber 20. An outlet port 44 is provided on the upper or outlet side 38 of the base body 19.

[0150] The porous box 18 of the third embodiment corresponds to the base 19 of the porous box 18 of the first embodiment, which is provided with an outlet port 44 .

[0151] The perforated box 18 in the embodiment shown in FIG. 6, which is not inserted in the gap between the two transport rails 32, is arranged below the transport rails 32.

[0152] In this embodiment, a perforated edge 46 may be provided on the perforated box 18 .

Claims

1. A perforated box device for a stretching apparatus (10), particularly a heating furnace (12) of a transverse direction orienter, a machine direction orienter and / or a simultaneous stretching apparatus, comprising a perforated box (18) and a support device (34) for supporting the perforated box (18), The support device (34) includes a first support (52) and a second support (54); The porous box (18) is connected to a first support (52) and a second support (54); A perforated box device characterized in that the position of the perforated box (18) is adjusted between an operating position and an assembly position by adjusting the height of the first support (52), and the first end of the perforated box (18) is disposed at the assembly position which is lower than the operating position.

2. The support device (34) includes a rail (50) for supporting the perforated box (18), The rail (50) is connected to a first edge of the first support (52) and to a second edge of the second support (54); 2. The apparatus of claim 1, wherein the first end of the rail (50) is disposed in an assembly position that is lower than the operating position.

3. 3. The perforated box device according to claim 1 or 2, wherein the rail (50) and / or the perforated box (18) are arranged horizontally in the operating position and / or the rail (50) and / or the perforated box (18) are inclined relative to a horizontal plane when moved from the operating position to the assembly position.

4. The first support (52) has two connecting rods (60, 62) pivotally connected to each other, The perforated box device according to any one of claims 1 to 3, wherein at least one of the two connecting rods (60, 62) is axially attached to the rail (50) and / or the perforated box (18), and in particular, the two connecting rods (60, 62) are arranged coaxially with each other in a vertically standing operating position.

5. 5. The perforated box device according to claim 1, wherein the second support (54) is a stationary support and / or the rail (50) and / or the perforated box (18), in particular the second edge, e.g. the second end of the rail (50) and / or the perforated box (18), is pivotally attached to the second support (54).

6. The perforated box apparatus of any one of claims 1 to 5, wherein the perforated box (18) is slidably disposed on the rail (50) and / or removed from the support device (34) via a first end of the rail (50).

7. 7. The perforated box device according to claim 1, wherein the support device (34) comprises two first supports (52) and a first beam (72) connecting the two first supports (52) to each other and / or comprises two second supports (54) and a second beam (74) connecting the two second supports (54) to each other.

8. 8. The perforated box apparatus of claim 7, wherein the rail (50) and / or the perforated box (18) are disposed transversely to the first beam (72) and / or the second beam (74) and / or are attached to the first beam (72) and / or the second beam (74).

9. 9. The perforated box apparatus of claim 8, wherein the support device (34) comprises a number of rails (50) and / or perforated boxes (18) aligned parallel to one another and attached to the first beam (72) and / or the second beam (74).

10. The perforated box apparatus according to any one of claims 1 to 9, wherein the support device (34) is provided with an operating device (56) for adjusting the height of the first support (52).

11. 11. The perforated box apparatus according to claim 10, wherein the operating device (56) is a screw jack having a screw support shaft (64) and a support nut (66).

12. The perforated box device (16) according to any one of claims 1 to 11, comprising a number of perforated boxes (18) arranged adjacent to each other and parallel to each other in the stretching direction (R).

13. A cover is disposed between two adjacent perforated boxes (18) that separates the perforated boxes (18), and / or 13. The perforated box arrangement according to claim 12, wherein the perforated edge (46) of the lid projects towards the outside (38) of the perforated box (18) in the direction of extension (R) relative to the adjacent perforated box (18).

14. 14. The perforated box arrangement of claim 1, wherein the perforated box (18) comprises a plurality of air outlet openings (44) disposed on an outlet side (38) of the perforated box (18) and / or the perforated box (18) comprises an inlet side (36) disposed on a second edge of the perforated box (18) and having an air inlet (40).

15. The perforated box device according to any one of claims 1 to 14, wherein the perforated box (18) comprises a base (19) and an additional chamber (20) attached to the base (19), the additional chamber (20) having an outlet (44).

16. a transverse direction orienter, a machine direction orienter and / or a simultaneous stretching device; The simultaneous stretching device includes a thin film conveying device (14) and a heating furnace. The heating furnace is provided with a perforated box device (16) according to any one of claims 1 to 15, A stretching device characterized in that a rail (50) and / or a perforated box (18) are arranged transversely to the stretching direction (R).

17. The thin film transport device (14) includes two transport rails (32) arranged at a fixed distance from each other in the lateral direction (Q), When the support device (34) is in the assembly position, the perforated box (18) can be removed from the furnace (12) via a removal path below one of the transfer rails (32); and / or 17. A drawing device according to claim 16, characterized in that a perforated box (18) is arranged in the operative position of at least a portion of the gap of the support device (34).

18. The stretching device (10) includes an air supplier (42), 18. A drawing device according to claim 16 or 17, wherein the inlet side (36) of the perforated box (18) in the operative position of the support device (34) is connected to an air supply (42).

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