Device and a method for processing semifinished bag products, and gluing station for semifinished bag products

Patent metadata

Field	Value
Publication number	US-9545768-B2
Application number	US-200913126252-A
Country	US
Kind code	B2
Filing date	Oct 22, 2009
Priority date	Oct 27, 2008
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

An apparatus and a method for the processing of semi-finished sacks and a gluing station for semi-finished sacks include a feed element and a guide element. Semi-finished sacks having more complicated shapes, such as tubular pieces having open bottom squares with valve patches inserted therein, tend to be subjected to a partial gluing process or even suffer damage during the process of glue application in the nozzle clearance. Therefore, at least one feed element is provided, which is disposed upstream of a glue-application gap in the transport direction of the semi-finished sacks, and which together with the guide element defines a feed region of the semi-finished sacks to the application head. Components of the semi-finished sacks are guided through the feed region, which tapers in the transport direction of the semi-finished sacks.

First claim

What is claimed is:

1. An apparatus for processing semi-finished sacks, said apparatus comprising:
a gluing station having a glue-application head;
a transport medium that feeds the semi-finished sacks to the gluing station in a transport direction (z) such that the semi-finished sacks can be guided past the glue-application head; and
a feed element, which is disposed upstream of and adjacent to a glue-application gap in the transport direction (z) of the semi-finished sacks,
and which together with a guide element defines a feed region of the semi-finished sacks adjacent to the glue-application head,
through which feed region at least components of the semi-finished sacks are guided,
and which feed region tapers in the transport direction (z) of the semi-finished sacks,
with an angle (β) between the guide element and the feed element in the tapering feed region being in a range of 1° to 45°.

2. The apparatus as defined in claim 1 , further comprising a counter-bearing, which together with the glue-application head forms the glue-application gap, in which glue is applied to the semi-finished sacks as the semi-finished sacks travel past the application head.

3. The apparatus as defined in claim 1 , wherein the gluing station is a gluing station configured to glue the sack bottom that is provided with a slip.

4. The apparatus as defined in claim 2 , further comprising a second gap, which is disposed upstream of the feed element and the glue-application gap in the transport direction (z) of the semi-finished sacks and in which pressure is applied to at least a portion of surfaces to be glued.

5. The apparatus as defined in claim 4 , further comprising a guide region for the semi-finished sacks, the guide region expanding downstream of the second gap in the transport direction (z) of the semi-finished sacks, in order to taper in a region of the feed element.

6. The apparatus as defined in claim 4 , further comprising a guide region for the semi-finished sacks, the guide region having a consistent thickness for a defined distance upstream of the second gap in a region of areas to be glued in the transport direction of the semi-finished sacks.

7. The apparatus as defined in claim 1 , wherein the angle (β) between the guide element and the feed element in the tapering feed region is in a range of 3° to 15°.

8. The apparatus as defined in claim 1 , wherein the gluing station is configured to apply glue to an open bottom square, and
further comprising a second feed element.

9. The apparatus as defined in claim 1 , wherein the feed element is pliable from an original shape or position under an action of a force, and assumes the original shape or position after removal of the force.

10. The apparatus as defined in claim 9 , wherein the feed element includes a sheet metal or a stainless steel.

11. The apparatus as defined in claim 1 , wherein at least one of the feed element and the guide element includes recesses therein.

12. A gluing station for semi-finished sacks, said gluing station comprising:
a glue-application head;
a transport medium that feeds the semi-finished sacks to the gluing station in a transport direction (z) such that the semi-finished sacks can be guided past the glue-application head;
a feed element, which is disposed upstream of and adjacent to a glue-application gap in the transport direction (z) of the semi-finished sacks, and which together with a guide element defines a feed region of the semi-finished sacks adjacent to the glue-application gap,
through which feed region at least components of the semi-finished sacks are guided,
and which feed region tapers in the transport direction (z) of the semi-finished sacks,
with an angle (β) between the guide element and the feed element in the tapering feed re ion being in a range of 1° to 45°.

13. A method of processing semi-finished sacks with a bottoming apparatus,
the bottoming apparatus having a gluing station with a glue-application head, and
the semi-finished sacks being fed to the gluing station and guided past the glue-application head by a transport medium,
said method comprising:
feeding at least components of the semi-finished sacks to the glue-application head through a feed region thereof,
and exposing at least the components of the semi-finished sacks to an increasing pressure as the components pass through the feed region, with the increasing pressure acting in a direction (y) extending transversely to a transport direction (z) of the components of the semi-finished sacks.

14. The method as defined in claim 13 , wherein
the components of the semi-finished sacks are adjusted relative to a width thereof in the feed region
in the direction (y) extending transversely to the transport direction (z).

15. The method as defined in claim 14 ,
wherein
the components of the semi-finished sacks that are adjusted are bottom flaps, and the bottom flaps are adjusted relative to the width thereof in a direction of outer ends of the bottom flap.

16. The apparatus according to claim 1 , wherein the apparatus is a bottoming apparatus for cross-bottom valve sacks.

17. The apparatus according to claim 4 , wherein the gap is a roller gap.

18. The gluing station according to claim 12 , wherein the angle (β) between the guide element and the feed element in the tapering feed region is in a range of 3° to 15°.

19. The apparatus according to claim 11 , wherein the recesses are slots, holes, or elongated holes.

20. The gluing station according to claim 12 , wherein the gluing station is configured for a bottoming apparatus for cross-bottom valve sacks.

Assignees

• Lamkemeyer Andreas
• Daher Marco
• Klang Ralf
• Windmoeller & Hoelscher

Inventors

• Lamkemeyer Andreas
• Daher Marco
• Klang Ralf

Classifications

• B31B2221/405

  Operations & Transport · mapped topic

• B31B29/60

  Operations & Transport · mapped topic

• B31B29/00

  Operations & Transport · mapped topic

• B05C1/027 Primary

  only at particular parts of the articles (at particular parts of work of indefinite length B05C1/16) · CPC title

• B31B2221/20

  Operations & Transport · mapped topic