DE20007232U1 - Device in particular for the longitudinal strapping of packaged goods - Google Patents

Description

B/40070/70/ts

Schneider + Ozga, Am Bahnhof 3, 95461 Bindlach 1 Device especially for longitudinal strapping of packaged goods

The invention relates to a device, in particular for longitudinally strapping packaged goods with a strapping band, with a table with a transport device for the packaged goods, with a band guide device for guiding the strapping band, with a shooting device for shooting the strapping band into the band guide device, with a re-tensioning device for tightening the strapping band around the packaged goods, and with a welding device for welding the corresponding sections of the strapping band tightened around the packaged goods, wherein a longitudinal guide channel of the band guide device having an inlet end and an outlet end is provided centrally above the table.

Such a device is known from DE 195 03 112 A1. The band guide device of this known strapping device has, in addition to the mechanically acting longitudinal guide channel provided above the table, a first free air gap associated with its inlet end and a second free air gap associated with its outlet end, along which the strapping band is guided with the aid of compressed air. This requires a suitable compressed air source. In addition, the compressed air-assisted guidance of the strapping band along the first or second air gap can cause problems because the strapping band is usually not exactly straight but slightly curved. This bending of the strapping band results from the strapping band being stored on

a supply reel that is stored in the table of the strapping device or from a storage unit in the table in which the strapping band is temporarily stored running back and forth in a meandering manner.

This slight bending of the strapping band can lead to operational disruptions. Such operational disruptions have a corresponding impact on the productivity of the strapping machine.

In view of these circumstances, the invention is based on the object of creating a device of the type mentioned at the outset which, despite its simple construction, functions very reliably at a high strapping cycle speed.

This object is achieved according to the invention in a device of the type mentioned at the outset in that the longitudinal guide channel is linearly adjustable in height between a packaged goods transport position spaced apart from the table and a shooting and strapping position adjacent to the table.

In the strapping device according to the invention, the longitudinal guide channel is located in the vicinity of the table during the shooting of the strapping band into the longitudinal guide channel of the band guide device, so that the shooting of the strapping band into the longitudinal guide channel at its entry end and the immediate subsequent shooting of the strapping band from the exit end of the longitudinal guide channel back into the table is possible precisely and time-savingly, i.e. at high speed, without any problems. After the strapping band has been shot in and the packaged goods have been strapped, the longitudinal guide channel is moved up from the shooting and strapping position to the packaged goods transport position, after which the packaged goods resting on the table are removed from the table. A new packaged goods to be strapped can then be placed on the table. The longitudinal guide channel is then moved back down into the insertion and strapping position so that its entry end and exit end are in the vicinity of the table, after which the strapping band can again be easily enclosed in the longitudinal guide channel.

In the device according to the invention, it is expedient if the longitudinal guide channel is curved upwards in an arc shape between its inlet end and its outlet end. The longitudinal guide channel is curved in such a way that, in the insertion position, a packaged item to be strapped finds space between the longitudinal guide channel and the top of the table.

According to the invention, the longitudinal guide channel can have a shooting section having the entry end, an adjoining longitudinal middle section and an adjoining exit section having the exit end, which are connected to one another in one piece. Another possibility according to the invention is that the longitudinal guide channel has a shooting section having the entry end, an adjoining longitudinal middle section and an adjoining exit section having the exit end, wherein the shooting section and the exit section are pivotally connected to the longitudinal middle section in such a way that they assume a spread position in the packaged goods transport position of the longitudinal guide channel at a distance from the table. Such a design of the latter type has the advantage that the longitudinal guide channel does not have to be adjusted linearly in height to the shooting and strapping position as far as in the one-piece design described above.

In the device according to the invention with an insertion section and an exit section, which are pivotably connected to the longitudinal middle section, it is preferred if the insertion section and the exit section are connected to the longitudinal middle section so that they can be spread apart simultaneously. The insertion section and the exit section can be pivoted out laterally from the longitudinal strapping plane defined by the longitudinal guide channel, i.e. can be spread out. However, it is expedient if the insertion section and the exit section can be spread apart simultaneously in the longitudinal strapping plane defined by the longitudinal guide channel. For this purpose, the insertion section and the exit section of the longitudinal guide channel can each have an extension lever which is articulated to an associated rod which, with its

The extension lever is provided in a fixed position, i.e. fixed to the device. If the longitudinal guide channel is moved up in a linear manner from the insertion and strapping position adjacent to the table to the packaged goods transport position spaced away from the table, the respective rod and the associated extension lever result in a forced pivoting of the insertion section and the exit section of the longitudinal guide channel in relation to its longitudinal middle section. Because the insertion section and the exit section are forced to pivot upwards, it is advantageously possible to move the longitudinal middle section linearly up only a reduced distance and to pivot the insertion section and exit section up at the same time, so that an optimal packaged goods transport position is achieved even with a reduced linear upward movement of the longitudinal guide channel.

Another possibility is that the longitudinal guide channel has an entry section having the entry end and an exit section having the exit end, which adjoin one another and which can be pivoted, i.e. spread apart, about associated pivot axes. With such a design, it is possible for the entry section and the exit section to be spread apart independently of one another.

To further facilitate the insertion of the strapping band into the longitudinal guide channel, its inlet end can have a funnel. To optimize the insertion of the strapping band from the outlet end of the longitudinal guide channel back into the table of the strapping device, it is helpful if the table has a funnel at its inlet associated with the outlet end of the longitudinal guide channel.

The longitudinal guide channel of the strapping device according to the invention can have a U-shaped cross-sectional profile that is open towards the table and that can have a bristle curtain on the open side. The bristles of this bristle curtain are oriented from their fastening end to the free end, preferably at an angle forwards in the feed direction of the strapping band.

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Further details, features and advantages emerge from the following description of an embodiment of the strapping device according to the invention shown schematically in the drawing. They show:

Figure 1 is a schematic side view of the inventive

strapping device,

Figure 2 is an enlarged section along the line N-II in Figure 1 through the

Longitudinal guide channel of the strapping device,

Figure 3 a section of the longitudinal guide channel in the direction of arrow III in

Figure 2,

Figure 4 in a side view similar to Figure 1 shows another design of the

Device, whereby the representation of the components of the device present in the table has been omitted, and

Figure 5 shows schematically another embodiment of the

strapping device.

Figure 1 shows a strapping device 10 which is intended in particular for longitudinally strapping packaged goods 12 with a strapping band 14. The strapping device 10 has a table 16 in which a supply reel 18 for the strapping band 14 is stored. Adjacent to the supply reel 18 in the table 16 is a storage device 20 in which the strapping band 14 is temporarily stored in a meandering back and forth manner.

The packaged goods 12, which are to be strapped with the strapping band 14, in particular lengthwise, are positioned on the support surface 22 of the table 16 with the aid of a transport device known per se, not shown. The table 16 has a welding device 24 in a central area of the support surface 22 and, next to the welding device 24, a shooting and re-tensioning device 26. The mode of operation of the shooting and re-tensioning device

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26 and the welding device 24 are known per se, so that it is unnecessary to go into them in more detail.

The strapping device 10 has a band guide device 28 for the defined guidance of the strapping band 14, which serves to guide the strapping band 14 around the packaged goods 12 to be strapped. The band guide device 28 has a longitudinal guide channel 30 in the middle above the table 16 or its support surface 22. The longitudinal guide channel 30 has an inlet end 32 and an outlet end 34 spaced therefrom. The inlet end 32 is assigned a band outlet 36 on the support surface 22 of the table 16 and the outlet end 34 of the longitudinal guide channel 30 is assigned a band inlet on the support surface 22 of the table 16.

The longitudinal guide channel 30 is linearly adjustable in height between a shooting and strapping position adjacent to the table and a packaged goods transport position spaced from the table. This adjustability is indicated by the double arrow 39. The longitudinal guide channel 30 is shown in the shooting position with solid lines and in the packaged goods transport position spaced from the table 16 with thin dashed lines.

In order to create space for the packaged goods 12 to be strapped in the insertion position, the longitudinal guide channel 30 is curved upwards in an arc shape between its inlet end 32 and its outlet end 34.

At its inlet end 32, the longitudinal guide channel 30 is formed with a funnel 40. This funnel 40 facilitates the insertion of the strapping band 14 into the longitudinal guide channel 30. The table 16 or its support surface 22 is provided with a funnel 42 at the band inlet 38 associated with the outlet end 34 of the longitudinal guide channel 30 for band guidance and centering.

Figure 2 shows that the longitudinal guide channel 30 has a U-shaped cross-sectional profile that is open towards the table. On the open side 44 of the longitudinal guide channel 30

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A bristle curtain 46 is provided for the U-shaped cross-sectional profile. The bristles of the bristle curtain 46 are fastened with their fastening end 48 to a leg 50 of the longitudinal guide channel 30. The free ends 52 of the bristles of the bristle curtain 46 extend to the opposite other leg 54 of the longitudinal guide channel 30 of the U-shaped cross-sectional profile.

Figure 3 shows that the bristles of the bristle curtain 46 are oriented diagonally forwards from their fastening end 48 to the free end 52 in the feed direction of the strapping band 14 _, which is indicated by the arrow 56. This improves the guidance of the strapping band 14 along the longitudinal guide channel 30 while the strapping band 14 is being shot into the longitudinal guide channel 30, while at the same time achieving the advantage that the bristle curtain 46 does not hinder or impair the strapping of the packaged goods 12 with the strapping band 14, ie the release of the strapping band 14 from the longitudinal guide channel 30 and the immediately subsequent tightening of the strapping band 14 around the packaged goods 12.

Figure 4 shows a schematic side view - similar to Figure 1 - of a design of the strapping device 10 for longitudinally strapping packaged goods 12 with a strapping band. During longitudinal strapping, the packaged goods 12 are located on a table 16 of the strapping device or on the support surface 22 of the table 10 provided for this purpose.

The strapping device 10 has a strap guide device 28 with a longitudinal guide channel 30. The longitudinal guide channel 30 defines a longitudinal strapping plane lying in the drawing plane of Figure 4.

The longitudinal guide channel 30 has a shooting section 58. The shooting section 58 is formed with a funnel 40 at its inlet end 32. The shooting section 58 has an end 60 remote from the inlet end 32. A longitudinal middle section 62 of the longitudinal guide channel adjoins the shooting section 58 of the longitudinal guide channel 30. The longitudinal middle section 62 has an end 64 adjacent to the end 60 and a

a second end 66 remote therefrom. The ends 60 and 64 can be adjacent to one another or can be at a defined distance from one another.

An exit section 68 of the longitudinal guide channel 30 adjoins the longitudinal center section 62 of the longitudinal guide channel 30. The exit section 68 has an exit end 34 and an end 70 remote therefrom. The end 70 can adjoin the second end 66 of the longitudinal center section 62 or have a small defined distance from it. A funnel 42 is assigned to the exit end 34 of the exit section 68 of the longitudinal guide channel 30 in the table 16.

While Figure 1 schematically shows a design of the strapping device 10 in which the insertion section 58, the longitudinal center section 62 and the exit section 68 are connected to one another in one piece to form the longitudinal guide channel 30, Figure 4 schematically shows a design of the strapping device 10 in which the insertion section 58 and the exit section 68 of the longitudinal guide channel 30 are pivotally connected to its longitudinal center section 62 in such a way that they assume a spread position in the packaged goods transport position of the longitudinal guide channel 30 that is spaced from the table 16, i.e., when it is moved upwards. The upward movement of the longitudinal guide channel is also schematically illustrated in Figure 4 by the arrow 39. The packaged goods transport position of the longitudinal guide channel 30 that is spaced from the table 16 is indicated in Figure 4 by a double dash-dot thin line. In order to spread the insertion section 58 and the exit section 68 apart when the longitudinal guide channel 30 or its longitudinal center section 62 is moved upwards, the insertion section 58 is pivotally connected at its end 60 to the end 64 of the longitudinal center section 62 about a pivot axis 72 and the exit section 68 is pivotally connected at its end 70 to the second end 66 of the longitudinal center section 62 about a pivot axis 74. An extension lever 76 of the insertion section 58 protrudes from the pivot axis 72. An extension lever 78 of the exit section 68 protrudes from the pivot axis 74. A rod 80 is articulatedly connected to the extension lever 76 of the insertion section 58 of the longitudinal guide channel 30. With the extension lever 78 of the outlet section 68 of the

A rod 82 is connected in an articulated manner to the longitudinal guide channel 30. The rod 80 is stationary at one end 84, i.e. it is provided so that it can pivot on the strapping device 10. The opposite second end 86 of the rod 80 is guided so that it can move linearly along the associated extension lever 76 and is also mounted so that it can pivot. The rod 82 is correspondingly stationary at its first end 88, i.e. it is provided so that it can pivot on the strapping device 10. The opposite second end 90 of the rod 82 is guided so that it can move linearly on the associated extension lever 78 and is also mounted so that it can pivot.

If the longitudinal guide channel 30 is moved up in the direction of arrow 39 from the insertion and strapping position adjacent to the table 16 into the packaged goods transport position, the insertion section 58 and the exit section 68 are simultaneously pivoted up about their pivot axes 72 and 74, i.e. spread apart, as the longitudinal center section 62 is moved up linearly, which is illustrated by the two arched arrows 92 and 94.

Figure 5 shows a schematic and cutaway view of a further embodiment of the strapping device 10 with a table 16 shown in sections and the longitudinal guide channel 30 provided above the table 16, which has an insertion section 58 and an exit section 68 shown in section. The insertion section 58 has an insertion end 32 with a funnel 40 and an end 60 remote from it. The exit section 68 has an exit end 34 (not shown) (see Figures 1 and 4) and a second end 66 remote from it. The ends 60 and 66 are adjacent to one another. The end 60 is pivotally supported on a rod 80 and the end 66 is pivotally supported on a rod 82. The rod 80 is fixed at its end 84 and the rod 82 is fixed at its end 88.

A drive device 96, which is, for example, a piston-cylinder unit, engages the shooting section 58. With the help of the drive device 96, the shooting section 58 can be pivoted or spread around the end 60. This is indicated by the curved arrow 92.

The outlet section 68 of the longitudinal guide channel 30 can be pivoted about the end 66, i.e. can be spread open. This is indicated by the curved arrow 94.

The drive device 96 for the insertion section 58 or the drive device for the exit section 68 of the longitudinal guide channel 30 can act vertically, horizontally or in any other manner in order to adjust the insertion section 58 and the exit section 68 of the longitudinal guide channel 30 simultaneously or independently of one another between the strapping position and the respectively spread-out access or removal position.

B/40070/70/ts

Schneider + Ozga, Am Bahnhof 3, 95461 Bindlach List of reference numbers:

10 Strapping device

12 Packaged goods

14 strapping tape (for 12)

16 Table (of 10)

18 Supply spool (in 16)

20 Save 16)

22 support surface (of 16)

24 welding equipment (in 16)

26 Shooting and re-cocking device (for 14)

28 Tape guide device (for 14)

30 Longitudinal guide channel (of 28)

32 Entry End (of 30)

34 exit end (of 30)

36 Belt outlet (on 22)

38 Band inlet (on 22)

39 Double arrow

40 funnels (on 32) 42 funnels (on 38)

44 open pages (of 30)

46 Bristle curtain (on 44)

12

48 Fastening End (of 46)

50 legs (of 30)

52 free end (of 46)

54 second leg (of 30)

56 feed device (of 14)

58 Shooting section (of 30)

60 End (of 58)

62 longitudinal center section (of 30)

64 first end (of 62)

66 second end (of 62)

68 exit section (of 30)

70 End (of 68)

72 swivel axis (between 60 and 64)

74 swivel axis (between 66 and 70)

76 extension levers (of 58)

78 extension levers (of 68)

80 rods (for 76)

82 rods (for 78)

84 first end (of 80)

86 second end (of 80)

88 first end (of 82)

90 second end (of 82)

92 curved arrow

94 curved arrow

96 drive equipment (of 58)

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Claims (13)

1. Device in particular for longitudinally strapping packaged goods ( 12 ) with a strapping band ( 14 ), with a table ( 16 ), with a transport device for the packaged goods ( 12 ), with a band guide device ( 28 ) for guiding the strapping band ( 14 ), with a shooting and re-tensioning device ( 26 ) for shooting the strapping band ( 14 ) into the band guide device ( 28 ) and for tightening the strapping band ( 14 ) around the packaged goods ( 12 ) and with a welding device ( 24 ) for welding the corresponding sections of the strapping band ( 14 ) tightened around the packaged goods ( 12 ), wherein a longitudinal guide channel ( 30 ) having an inlet end and an outlet end ( 34 ) is arranged centrally above the table ( 16 ). A band guide device ( 28 ) is provided, characterized in that the longitudinal guide channel ( 30 ) is linearly adjustable in height between a packaged goods transport position spaced from the table ( 16 ) and a shooting and strapping position adjacent to the table ( 16 ). 2. Device according to claim 1, characterized in that the longitudinal guide channel ( 30 ) is curved upwards in an arc shape between its inlet end ( 32 ) and its outlet end ( 34 ). 3. Device according to claim 1 or 2, characterized in that the longitudinal guide channel ( 30 ) has an insertion section ( 58 ) having the inlet end ( 32 ), an adjoining longitudinal middle section ( 62 ) and an adjoining outlet section ( 68 ) having the outlet end ( 34 ), which are connected to one another in one piece. 4. Device according to claim 1 or 2, characterized in that the longitudinal guide channel ( 30 ) has an insertion section ( 58 ) having the inlet end ( 32 ), an adjoining longitudinal middle section ( 62 ) and an adjoining outlet section ( 68 ) having the outlet end ( 34 ), wherein the insertion section ( 58 ) and the outlet section ( 68 ) are pivotally connected to the longitudinal middle section ( 62 ) in such a way that they assume a spread position in the packaged goods transport position of the longitudinal guide channel ( 30 ) spaced from the table ( 16 ). 5. Device according to claim 4, characterized in that the insertion section ( 58 ) and the exit section ( 68 ) are connected to the longitudinal center section ( 62 ) so as to be simultaneously spread apart. 6. Device according to claim 5, characterized in that the insertion section ( 58 ) and the exit section ( 68 ) can be spread apart simultaneously in the longitudinal strapping plane defined by the longitudinal guide channel ( 30 ). 7. Device according to one of claims 4 to 6, characterized in that the insertion section ( 58 ) and the exit section ( 68 ) each have an extension lever ( 76 ; 78 ) which is articulated to an associated rod ( 80 ; 82 ) which is provided in a stationary manner with its end ( 84 ; 88 ) remote from the corresponding extension lever ( 76 ; 78 ). 8. Device according to claim 1 or 2, characterized in that the longitudinal guide channel ( 30 ) has an insertion section ( 58 ) having the insertion end ( 32 ) and an exit section ( 68 ) having the exit end ( 34 ), which adjoin one another and which can be pivoted about pivot axes. 9. Device according to claim 8, characterized in that the injection section ( 58 ) and the exit section ( 68 ) can be spread open independently of one another. 10. Device according to one of claims 1 to 9, characterized in that the inlet end ( 32 ) of the longitudinal guide channel ( 30 ) has a funnel ( 40 ). 11. Device according to one of claims 1 to 10, characterized in that the table ( 16 ) has a funnel ( 42 ) at its inlet ( 38 ) associated with the outlet end ( 34 ) of the longitudinal guide channel ( 30 ). 12. Device according to one of claims 1 to 11, characterized in that the longitudinal guide channel ( 30 ) has a U-shaped cross-sectional profile which is open towards the table ( 16 ) and which has a bristle curtain ( 46 ) on its open side (44). 13. Device according to claim 12, characterized in that the bristles of the bristle curtain ( 46 ) are oriented obliquely forwards from their fastening end ( 48 ) to the free end ( 52 ) in the feed direction of the strapping band ( 14 ).