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CN-122009641-A - Hot glue mechanism with suction device for labeler and labeler

CN122009641ACN 122009641 ACN122009641 ACN 122009641ACN-122009641-A

Abstract

The invention relates to a hot glue mechanism with a suction device for a labeling machine and the labeling machine. The hot glue mechanism (1) comprises a glue applicator (3) rotatable about its own longitudinal axis (2), a glue reservoir for providing hot melt glue and a housing (4) in which the glue applicator (3) is partially arranged. Furthermore, the hot glue mechanism (1) comprises at least one first suction pipe (5, 6) for sucking glue vapors along the glue applicator (3) in a glue application area (7). The labelling machine comprises the hot glue mechanism (1) for applying hot melt glue to labels.

Inventors

  • Nicholas niebel
  • Theron Meisner
  • Stephanie Peter

Assignees

  • 克罗内斯股份公司

Dates

Publication Date
20260512
Application Date
20251030
Priority Date
20241111

Claims (15)

  1. 1. A hot glue mechanism (1) for a labelling machine for labelling containers in the beverage processing industry, wherein the hot glue mechanism (1) comprises: A glue applicator (3) rotatable about its own longitudinal axis (2), A glue reservoir for providing hot melt glue, -A housing (4) in which said applicator roll (3) is partially arranged, It is characterized in that the method comprises the steps of, The hot glue mechanism (1) comprises at least one first suction pipe (5, 6) for sucking glue vapors along the glue applicator (3) in a glue application area (7).
  2. 2. The hot glue mechanism according to claim 1, wherein the at least one first suction pipe (5, 6) is arranged outside the housing (4).
  3. 3. A hot glue mechanism according to claim 1 or 2, wherein the suction holes (8) of the at least one first suction pipe (5, 6) are arranged along the entire length (i) of the glue applicator roll (3).
  4. 4. A hot glue mechanism according to claim 3, wherein the suction holes (8) of the at least one first suction pipe (5, 6) are each spaced apart from each other by the same or almost the same distance (d 1).
  5. 5. A hot glue mechanism according to any one of claims 1 to 4, wherein the at least one first suction pipe (5, 6) is designed such that glue vapour is sucked against the direction of action of gravity.
  6. 6. A hot glue mechanism according to any one of claims 1 to 5, further comprising a second suction pipe (11) for sucking glue vapour, arranged above the upper end (12) of the glue roller (3) and perpendicular to the longitudinal axis (2) of the glue roller (3).
  7. 7. The hot glue mechanism according to claim 6, wherein the second suction pipe (11) is arranged outside the housing (4).
  8. 8. The hot glue mechanism according to claim 6 or 7, wherein the suction holes (13) of the second suction pipe (11) are each spaced apart from each other by the same or almost the same distance (d 2).
  9. 9. A hot glue mechanism according to any one of claims 1 to 8, wherein the suction pipe (5, 6, 11) is arranged such that it is able to receive an air flow of the glue vapour and to suction by a defined deflection.
  10. 10. The hot glue mechanism according to any one of claims 1 to 9, wherein the suction pipes (5, 6, 11) merge into a suction bridge (10).
  11. 11. The hot glue mechanism according to claim 10, wherein the suction bridge (10) comprises an air intake device (16) for taking in a predetermined amount of external air, wherein the external air comprises for example ambient air or cooled ambient air.
  12. 12. The hot glue mechanism according to claim 11, wherein the suction bridge (10) comprises an air mixer (17) for mixing the external air with the glue vapour.
  13. 13. The hot glue mechanism according to claim 11 or 12, wherein downstream of the suction bridge (10) a pipe system (24) for further cooling is provided.
  14. 14. The hot glue mechanism according to any one of claims 1 to 13, wherein a cover cap (21) is arranged on the upper housing surface (19).
  15. 15. A labelling machine for labelling containers, such as bottles, in the food industry, characterized in that it comprises a hot glue mechanism (1) according to any one of claims 1 to 14 in order to apply hot melt glue to the labels.

Description

Hot glue mechanism with suction device for labeler and labeler Technical Field The invention relates to a hot glue mechanism with a suction device for a labeling machine and a labeling machine. Background It is known that hot melt adhesives, which generate adhesive vapors when heated, are used, for example, in applicator rolls for applying hot melt adhesive to labels or containers. When glue vapors condense at cold surfaces, such as at component surfaces, glue particles deposit there and contaminate the machine. For example, the oil contained in the hot melt adhesive evaporates. Thereby incurring high cleaning costs. In addition, the vapor may pose a health hazard to the operator. EP 3,456,644 A1 discloses a hot glue mechanism comprising a glue applicator arranged in a housing and a filter unit connected to the housing and having suction means for sucking out fluid, such as solid and liquid components of glue, from the interior of the housing before gas can leave the hot glue mechanism. Disclosure of Invention Purpose(s) The object of the present invention is to provide a hot glue mechanism with a suction device for a labelling machine and a labelling machine, both of which make it possible to efficiently suck and separate glue vapours. Solution scheme This object is achieved by a hot glue mechanism with suction device for labelling machines and a labelling machine according to the main aspects of the present application. Further embodiments are disclosed in the secondary aspects of the application. The hot glue mechanism according to the invention for labelling machines for labelling containers in the beverage processing industry comprises a glue applicator rotatable about its own longitudinal axis, a glue container for providing hot melt glue and a housing in which the glue applicator is partially arranged. Furthermore, the hot glue mechanism comprises at least one first suction pipe for sucking glue vapors along the glue applicator roll in the glue application area. By means of the at least one first suction pipe, the glue vapors generated during operation of the hot glue mechanism can be sucked and subsequently sucked out, so that the glue vapors can not cause contamination of the environment in which the hot glue mechanism is arranged (e.g. a machine shop) and odor disturbances caused by the glue vapors can also be avoided. The glue vapor may be drawn from inside the housing or may be drawn outside the housing. In order to make aspiration possible, one or more pumps may be provided, which pump or pumps may be connected directly or indirectly to the at least one first aspiration tube. The longitudinal axis of the applicator roll may be oriented parallel to the direction of action of gravity. The glue vapors may be generated when the hot melt glue is heated. The at least one first suction pipe is arranged along the glue applicator to suck up glue vapors, which may mean that the at least one first suction pipe is arranged parallel or substantially parallel to the longitudinal axis of the glue applicator. It is achieved that a uniform or substantially uniform cooling can take place along the length of the applicator roll while the glue vapour is sucked out by means of the at least one first suction pipe. Localized cooling of the applicator roll during suction of the glue vapors can be avoided, for example, when the glue vapors may only be sucked out from the lower end of the applicator roll. The hot glue mechanism may comprise two first suction pipes for sucking glue vapour along the glue applicator in the glue application area. A first one of the first suction pipes may be arranged at a first end region of the glue application region and a second one of the first suction pipes may be arranged at a second end region of the glue application region. The first end region and the second end region may be adjacent to an opening of the housing that holds the glue application region open. In the application area, the hot melt adhesive can be transferred to the label or container to be labeled. In the application region, a part of the cylindrical surface of the applicator roll may be located outside the housing. The part of the cylindrical surface of the applicator roll, which is constantly changing (by rotation) is located outside the housing when rotated about the longitudinal axis. The partial cylindrical surface may extend up to 2/9 of the circumference of the applicator roll. Part of the top and/or bottom surface of the applicator roll may be located outside the housing. In addition to the openings that hold the glue areas open, the housing may include a closed surface (e.g., an upper housing face, a lower housing face, and one or more side housing faces). The closure surface may be made up of a plurality of individual parts. The closing surface may comprise a small slit, for example in the area between the individual parts. By sufficient suction and suction volume flow, the escape of glue vapors at the gap c