DEVICE FOR FILLING A BAG, BAG CONTOUR SEALING TOOL, SEALING TOOL, METHOD FOR FILLING A BAG, METHOD FOR PRODUCING A BAG, SYSTEM AND BAG

Abstract

The invention relates to a bag contour welding tool for welding a foil to form an open bag, where the bag contour welding tool has a recess between two head lines, to a device for filling this bag with this bag contour welding unit, to a welding tool for airtight sealing of an opening of a bag for medical purposes with a bag contour welding unit, to a method of filling a bag with a device that has a filling needle, the bag being manufactured with a bag contour welding tool, to a method of manufacturing a bag with a bag contour welding tool, to a plant for manufacturing and filling a bag, the bag being manufactured with a bag contour welding unit, and to a bag which is manufactured and filled with this plant. The invention allows a filling of a bag, in particular a bag for medical purposes, without the necessity of providing a filling port on the bag. In this way, resources and costs can be saved, preventing damage to the environment.

Claims

1. Bag contour welding tool for welding a foil to form an open bag, characterized in that the bag contour welding tool has a recess between two head lines.

2. Bag contour welding tool according to claim 1, characterized in that the bag contour welding tool extends in a normal direction to the head lines in the direction of a foot line, directly adjacent to the recess.

3. Bag contour welding tool according to one of claim 1, characterized in that the bag contour welding tool, starting from the recess beneath the head lines, extends in the direction of the corners between the head lines and the lateral lines in the form of a loop.

4. Bag contour welding tool according to claim 1, characterized in that an area limited by the loop of the bag contour welding tool has a closed boundary.

5. Device for filling a bag, the bag being manufactured with a bag contour welding unit according to claim 1, characterized in that the device has a filling needle.

6. Device according to claim 5, characterized in that the filling needle has an area with a cross-section which is constant in the direction of extension of the filling needle.

7. Device according to claim 5, characterized in that the filling needle has area with a cross-section which expands in opposition to the direction of extension of the filling needle.

8. Welding tool for airtight sealing of an opening of a bag for medical purposes with a bag contour welding unit according to claim 1, characterized in that the welding tool has a welding electrode and the welding electrode has a surface relief.

9. Welding tool according to claim 8, characterized in that the surface relief of the welding electrode has a welding pattern.

10. Welding tool according to claim 9, characterized in that the welding pattern of the welding electrode is closed.

11. Welding tool according to claim 9, characterized in that the welding pattern of the welding electrode is open.

12. Method of filling a bag with a device that has a filling needle, the bag being manufactured with a bag contour welding tool according to claim 1, characterized in that the bag is positioned by a transport system, the filling needle is inserted between a first foil of the bag and a second foil of the bag in the area of the bag opening and the bag is filled through a channel inside the filling needle.

13. Method according to claim 12, characterized in that the first foil of the bag and the second foil of the bag are plastically deformed by a preforming tool in the area of the bag opening before the filling needle is inserted.

14. Method according to claim 12, characterized in that the first foil of the bag and the second foil of the bag are pulled apart before the filling needle is inserted.

15. Method according to claim 12, characterized in that the filling needle is pressed against the weld of the bag.

16. Method according to claim 12, characterized in that the filling needle is clamped against the weld of the bag.

17. Method according to claim 12, characterized in that the filling needle is sealed against the weld of the bag.

18. Method of manufacturing a bag with a bag contour welding tool according to claim 1.

19. Plant for manufacturing and filling a bag, the bag being manufactured with a bag contour welding unit according to claim 1.

20. Bag which is manufactured and filled with a plant according to claim 19.

Description

[0207] In the following, the invention will be explained in more detail using an example of embodiment with reference to the drawings wherein

[0208] FIG. 1 schematically shows a perspective view of a first embodiment of a device for filling a medical bag,

[0209] FIG. 2 schematically shows a perspective view of a second embodiment of a device for filling a bag,

[0210] FIG. 3 schematically shows a perspective view of the device for filling a bag from FIG. 1 or 2, in a closed state,

[0211] FIG. 4 schematically shows a perspective view of a filling needle and a bag,

[0212] FIG. 5 shows the filling needle and the bag from FIG. 4, with the filling needle inserted in the bag, and

[0213] FIG. 6 schematically shows a view of a bag with a welding pattern as well as the welding pattern in a schematical enlarged detail view.

[0214] The device 1 for filling the bag 2 in FIG. 1 substantially consists of a first clamping jaw 3, a second clamping jaw 4 and a filling needle 5.

[0215] The bag 2 has already been pre-stretched in the area of an opening 6 by means of a preforming tool (not shown).

[0216] The filling needle 5 has a through bore 7 through which the bag 2 can be filled.

[0217] The filling needle 5 also has a conical outer geometry 9 in a clamping region 8.

[0218] Inversely to the geometry 9 of the clamping region 8 of the filling needle 5, each of the clamping jaws 3, 4 has a conical inner geometry 10, 11 adapted to form a positive engagement (not shown) with the conical outer geometry 9.

[0219] The bag 2 can serve as a seal between the clamping region 8 of the filling needle 5 and the conical geometry 10, 11 of the clamping jaws 3, 4.

[0220] For filling the bag 2, the bag 2 is first clamped by the clamping jaws 3, 4. Thereafter the filling needle 5 is inserted in the pre-stretched opening 6 of the bag 2 such that positive engagement (not shown) between the geometry 9 and the geometries 10, 11 results. Subsequently a substance (not shown) can be filled into the bag 2 through the bore 7 of the filling needle 5.

[0221] When the bag 2 has been filled, the filling needle 5 is removed out of the bag 2 and then the bag 2 is moved away so that the device 1 for filling a bag 2 is free for the next bag (not shown).

[0222] The device 20 for filling a bag 22 in FIG. 2 substantially consists of a first clamping jaw 23, a second clamping jaw 24 and a filling needle 25.

[0223] The bag 22 has already been pre-stretched in the area of its opening 26 by means of a preforming tool (not shown).

[0224] The filling needle 25 has a through bore 27 through which the bag 22 can be filled.

[0225] The filling needle 25 also has a conical geometry 29 in a clamping region 28.

[0226] The clamping jaws 23, 24 each have a conical geometry 30, 31 inverse to the geometry 29 of the clamping region 28 of the filling needle 25, which geometry is adapted to form a positive engagement (not shown) with the geometry 29.

[0227] The filling needle 24 further has a groove 32. For allowing this groove to positively engage the clamping jaws 23, 24 from the top, the clamping jaws 23, 24 each have a cylindrical geometry 33, 34 which makes it possible to insert the filling needle 25 in the closed state (not shown) of the clamping jaws 23, 24 from the top to the point that the conical clamping region 28 can positively engage the conical geometries 30, 31.

[0228] The groove 32 of the filling needle 25 promotes the sealing tightness between the filling needle 25, the bag 22 and the clamping jaws 23, 24.

[0229] The bag 22 can serve as a seal between the clamping region 28 of the filling needle 25 and the conical geometry 30, 31 of the clamping jaws 23, 24.

[0230] For filling the bag 22, the bag 22 is initially clamped by the clamping jaws 23, 24. Then the filling needle 25 is inserted in the pre-stretched opening 26 of the bag 22 such that a positive engagement (not shown) between the geometry 29 and the geometries 30, 31 results. Subsequently a substance (not shown) can be filled into the bag 22 through the bore 27 of the filling needle 25.

[0231] When the bag 22 has been filled, the filling needle 25 is removed from the bag 22 and then the bag 22 is moved away so that the device 20 for filling a bag 22 is free for the next bag (not shown).

[0232] The device 40 for filling a bag 42 in FIG. 3 substantially consists of a first clamping jaw 43, a second clamping jaw 44 and a filling needle 45.

[0233] The device 40 substantially corresponds to the devices 1, 20 described above and is in a clamped state in which the bag 42 can be filled.

[0234] The bag 50 and the filling needle 51 in FIG. 4 are designed such that the filling needle 51 can be used for filling the bag 50.

[0235] For this purpose, the bag 50 is pre-formed by means of a preforming tool (not shown) in the region of its opening 52 so that the filling needle 51 can easily be inserted in the bag 50.

[0236] The bag 50 has a weld 53, consisting of a first head line 54, a first upper corner 55, a first closed loop 56, a first lateral line 57, a first lower corner (not shown), a foot line (not shown), a second lower corner (not shown), a second lateral line 58, a second upper corner 59, a second head line 60 and a second closed loop 61.

[0237] The filling needle 51 has a region with an elliptical geometry 62 and a bore 63 through which the bag 50 can be filled.

[0238] For filling of the bag 50, the filling needle 51 is inserted in the preformed opening 52 of the bag 50. Subsequently, a substance is filled into the bag 50 through the bore 63 of the filling needle 51.

[0239] When the bag 50 has been filled, the filling needle 51 is removed from the bag 50 and then the bag 50 is moved away so that the filling needle 51 for filling a bag 50 is free for the next bag (not shown).

[0240] The device 69 for filling a bag 71 in FIG. 5 substantially consists of a filling needle 70 and a bag 71.

[0241] The filling needle 70 is inserted in the bag 71 such that the bag 71 can be filled through the bore 72 in the filling needle 70.

[0242] The bag 80 in FIG. 6 is filled and welded in the region 81 of its opening (not shown) by means of a welding tool (not shown). The welding tool (not shown) has the closed welding pattern 82 with which the bag 80 was tightly sealed in the region 81 of its opening (not shown).

LIST OF REFERENCE NUMBERS

[0243] 1 device

[0244] 2 bag

[0245] 3 first clamping jaw

[0246] 4 second clamping jaw

[0247] 5 filling needle

[0248] 6 opening

[0249] 7 bore

[0250] 8 clamping region

[0251] 9 geometry

[0252] 10 geometry

[0253] 11 geometry

[0254] 20 device

[0255] 22 bag

[0256] 23 clamping jaw

[0257] 24 clamping jaw

[0258] 25 filling needle

[0259] 26 opening

[0260] 27 bore

[0261] 28 clamping region

[0262] 29 geometry

[0263] 30 geometry

[0264] 31 geometry

[0265] 32 groove

[0266] 33 geometry

[0267] 34 geometry

[0268] 40 device

[0269] 42 bag

[0270] 43 clamping jaw

[0271] 44 clamping jaw

[0272] 45 filling needle

[0273] 50 bag

[0274] 51 filling needle

[0275] 52 opening

[0276] 53 weld

[0277] 54 head line

[0278] 55 corner

[0279] 56 loop

[0280] 57 lateral line

[0281] 58 lateral line

[0282] 59 corner

[0283] 60 head line

[0284] 61 loop

[0285] 62 geometry

[0286] 63 bore

[0287] 69 device

[0288] 70 filling needle

[0289] 71 bag

[0290] 72 bore

[0291] 80 bag

[0292] 81 region

[0293] 82 welding pattern