EP2227338B1 - Dispositif de fusion de sachets - Google Patents

Dispositif de fusion de sachets Download PDF

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Publication number
EP2227338B1
EP2227338B1 EP08855327A EP08855327A EP2227338B1 EP 2227338 B1 EP2227338 B1 EP 2227338B1 EP 08855327 A EP08855327 A EP 08855327A EP 08855327 A EP08855327 A EP 08855327A EP 2227338 B1 EP2227338 B1 EP 2227338B1
Authority
EP
European Patent Office
Prior art keywords
piston
receiving space
axial
bag
melting system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP08855327A
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German (de)
English (en)
Other versions
EP2227338A1 (fr
Inventor
Michael Rothen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Illinois Tool Works Inc
Original Assignee
"INATEC Innovative Auftragstechnologie" GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication of EP2227338A1 publication Critical patent/EP2227338A1/fr
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Publication of EP2227338B1 publication Critical patent/EP2227338B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1042—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material provided with means for heating or cooling the liquid or other fluent material in the supplying means upstream of the applying apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container

Definitions

  • the invention relates to a rearwardly nachhadberen bag melts according to the preamble of claim 1.
  • bag smelters In so-called bag smelters, a solid working substance packed in a packaging bag, such as a hot melt adhesive in a cylindrical receiving space of a squeezing device, is transferred from a first solid to a flowable state at a discharge end for molten working substance, while an extrusion piston in the receiving space from the rear end of the bag propelled is pressed so that melted working fluid and the packaging bag on the cylindrical wall of the receiving space axially gradually pushed together.
  • the extrusion piston is provided with a stripper plate.
  • a low coefficient of friction between the stripper plate and the inner cylinder wall is desired.
  • the stripper plate is usually made of an elastically yielding material, such as a plastic and in particular of PTFE (such as Teflon®) preferred and also the cylindrical inner wall is coated with a similarly good lubricious material.
  • the EP 0 031 052 A1 relates to a sealing piston for the chemical industry made of PTFE (Teflon) whose tightness over the entire stroke should be improved even with temperature fluctuations.
  • the piston is provided on one end side with a radially far outer annular groove, so that only a thin cylindrical annular wall remains to the working cylinder and therefore is radially elastic.
  • the sealing piston still has an overall rigid end zone without any radial compressibility. This has the consequence that the sealing piston has no radial compressibility or expandability in the region of the wiping edge.
  • a rubber-elastic ring is inserted with oversize, which presses the thin cylindrical annular wall against the inner surface of the working cylinder to the outside.
  • the EP 434 617 A shows the features of the preamble of claim 1.
  • the EP 0 281 755 A1 describes a delivery piston for discharge cartridges, in which a seal located in a radial annular groove (O-ring) is axially compressed during the working stroke, so that the O-ring deflects radially and applies a sealing against the cylinder wall. This is achieved by a deep gap in the circumferential direction on the groove bottom of the sealing ring receiving groove.
  • O-ring radial annular groove
  • the WO 2007/118907 A1 describes a piston for a medical infusion device, in which a piston body is stiffened by an insert which increases the piston friction.
  • the invention is based on the problem of changing a Kolbenabstreifplatte a bag smelter so that their sealing and sliding properties remain even with more changing temperatures in a given frame.
  • a bag melter is proposed the features of claim 1. Thereafter, it is provided that in the kolbenabstrelfplatte in its axial top and / or in its axial bottom and / or between its axial top and bottom at least one recess is inserted, the at least a radial compression of the stripper plate allows, and that at least one expandable return element is inserted or used in the at least one recess.
  • the restoring elements in particular rubber-elastic materials come into consideration, they are designed according to a preferred embodiment of the invention approximately the same shape with the associated recesses and preferably have a certain excess in relation to the recess in the stripper on. As a result, not only a secure hold of the expandable restoring element in the recess is ensured in a simple manner, but the stripper plate is radially radially outwardly clamped radially to a certain extent.
  • the insertion opening of the cylindrical receiving space for the piston carrying the stripper plate has a substantially conical insertion region.
  • the in Figures 1 and 2 Bag melter 10 shown in two working positions comprises a receiving space 12 surrounded by a cylindrical inner wall 12A. Surrounding receiving space 12, wall 12B forms opposite mouth ends 12C and 12D at their upper and lower working positions, respectively. The lower mouth end 12D is closed with an end plate 14 having a plurality of outlet openings 14A.
  • Within the receiving space 12 is ( Fig. 1 A packaging bag 18 tightly filled with a hot melt adhesive 16.
  • the packaging bag is tightly closed at its rearward end 18A in the drawing and fully opened at its front end 18B lying down in the drawing to form a discharge opening 18C. This opening is usually done immediately before the onset of solid working substance tightly filled packaging bag 18 into the receiving space 12 from top to bottom, ie from the upper mouth end 12C ago.
  • the squeezing device 20 for the packaging bag 18 can be removed in a suitable manner.
  • the ejection device 20 comprises an extrusion piston 22, which is axially advanceable within the receiving space 12.
  • the extrusion piston 22 has a scraping or stripping plate 24 (e.g., PTFE, e.g., Teflon®) and has a sharp-edged circumferential scraping edge 24A.
  • PTFE e.g., Teflon®
  • a low-loss sliding of the extrusion piston 22 on the cylinder wall and thus a reasonably well-defined pressure on melted working substance 16A in the region of the lower heating zone can be realized.
  • the receiving space 12 has in the region of its lower mouth end 12D via an annular constriction 40.
  • This is executed in the illustrated preferred embodiment as at the lower mouth end of the receiving space 12 on the wall 12B releasably attachable and / or placed on the end plate 14 or attached ring , This has on its the receiving space 12 side facing a conical, serving as a sealing surface 40A wall.
  • This acts self-centering on the packaging bag 18 when it is inserted into the receiving space 12.
  • annular shaped heating element 30 leads to a melting in the region 16A of the working substance 16
  • the mouth edge zone 18D of the packaging bag 18 automatically applies itself to the conical sealing surface 40A.
  • the lateral pressure which the expanding working substance exerts on the edge zone 18D under the pressure of pressure is generally sufficient for this purpose.
  • the extrusion piston 22 is further equipped with a head plate 26 which are connected via pressure springs 28 which are passed through the cocking plate 24, with the extrusion piston 22.
  • This cross-sectional area of the top plate is less than that of the scraping plate 24, such that an edge gap 26A between the outer edge the top plate and the cylinder wall 12A of the receiving space 12 remains.
  • This edge gap 26A is dimensioned so that the top plate 26 can penetrate into the zone constricted with respect to its cross section at the lower mouth end of the receiving space 12 by a predeterminable distance.
  • the compression springs 24 are compressed under the pressure of the extrusion piston.
  • the pressure of the springs 28 is sufficient to advance the head plate into the constriction area and thereby squeeze out the last remains of working substance from the packaging bag, although the cocking plate 24 does not lower further, but stops before the beginning of the constriction 40.
  • FIG. 3A is a cocking or Abstreifplatte 24 seen in plan view, which has four arranged on a circumferential circle openings 24B for the compression springs 28 can be seen.
  • a central opening 24C can be seen, from which radiate eight recesses 24D emanate.
  • the scraping or stripping plate 24 becomes slightly deformable radially, ie, it is compressible by radial pressure directed towards the center and / or expandable radially outwards.
  • the scraping edge 24A subsequently abuts tightly against the cylindrical inner wall 12A of the receiving space 12. If the cross-section of the receiving space 12 in the region of the heating element 30 increases due to heating, the cross-section of the scraping or stripping plate 24 can follow this cross-sectional enlargement.
  • the stripper plate can be successfully used with a variety of squeezing devices and for a variety of different working materials.
  • the working materials need not necessarily be in solid form and must be meltable and / or packaged in a packaging bag. Rather, a pasty at room temperature agent can be processed with a device according to the invention.
  • the recesses for compression absorption and the remindsteli shame in the context of the invention can be varied in many ways.

Landscapes

  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Package Closures (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Coating Apparatus (AREA)
  • Sealing Devices (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (6)

  1. Dispositif (10) pour faire fondre des sacs, rechargeable par l'arrière, présentant
    une chambre cylindrique de réception,
    un dispositif de sortie par poussée déplaçable axialement dans la chambre de réception et
    une zone de chauffage située du côté de la sortie par poussée et servant à faire fondre la matière de travail solide
    caractérisé par
    un dispositif de sortie par poussée qui présente la forme d'un piston de sortie par poussée (22) doté d'une plaque (24) de raclage de piston en matériau élastique, d'un côté supérieur axial (24') et d'un côté inférieur axial (24'') ainsi que d'une arête de raclage (24A) radialement extérieure qui entoure de manière fermée la plaque de raclage lorsque le piston est en situation détendue,
    au moins une découpe (24C, 24D) étant prévue dans la plaque (24) de raclage de piston dans son côté supérieur axial et/ou son côté inférieur axial et/ou entre son côté supérieur axial et son côté inférieur axial, la découpe permettant une compression au moins radiale de la plaque de raclage de piston et
    au moins un élément expansible de rappel (25) étant inséré ou pouvant être inséré dans la découpe (24C, 24D).
  2. Dispositif pour faire fondre des sacs selon la revendication 1, caractérisé en ce que la ou les découpes (24C, 24D) sont en forme de rayon.
  3. Dispositif pour faire fondre des sacs selon les revendications 1 ou 2, caractérisé par des segments de cercle qui s'étendent radialement, séparés les uns des autres par des interstices d'écartement et reliés les uns aux autres au moins sur leur bord extérieur radial.
  4. Dispositif pour faire fondre des sacs selon l'une des revendications 1 à 3, caractérisé en ce que l'élément de rappel comprend un matériau élastique de type caoutchouc.
  5. Dispositif pour faire fondre des sacs selon l'une des revendications 1 à 4, caractérisé en ce que l'élément de rappel a essentiellement la même forme que la ou les découpes.
  6. Dispositif pour faire fondre des sacs selon l'une des revendications 1 à 5, caractérisé par un cône d'insertion (12C') prévu sur une embouchure d'insertion d'un espace cylindrique de réception (12) pour un matériau de travail (16) qui peut être extrait de l'espace de réception par poussée.
EP08855327A 2007-11-28 2008-11-28 Dispositif de fusion de sachets Active EP2227338B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202007016706U DE202007016706U1 (de) 2007-11-28 2007-11-28 Kolbenabstreifplatte für Auspresseinrichtung für Beutelschmelzer sowie damit verbundener Beutelschmelzer
PCT/EP2008/010135 WO2009068311A1 (fr) 2007-11-28 2008-11-28 Plaque de raclage de piston pour dispositifs d'éjection pour générateurs de colle à chaud et générateur de colle à chaud pourvu d'une telle plaque

Publications (2)

Publication Number Publication Date
EP2227338A1 EP2227338A1 (fr) 2010-09-15
EP2227338B1 true EP2227338B1 (fr) 2012-03-21

Family

ID=40377558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08855327A Active EP2227338B1 (fr) 2007-11-28 2008-11-28 Dispositif de fusion de sachets

Country Status (8)

Country Link
US (1) US8496140B2 (fr)
EP (1) EP2227338B1 (fr)
JP (1) JP5435300B2 (fr)
CN (1) CN101925412B (fr)
AT (1) ATE550107T1 (fr)
BR (1) BRPI0819720B1 (fr)
DE (1) DE202007016706U1 (fr)
WO (1) WO2009068311A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011504801A (ja) * 2007-11-28 2011-02-17 イナテク・ゲーエムベーハー 袋用溶融装置のための押出し手段のためのピストン式ワイパプレートおよびピストン式ワイパプレートを有する袋用溶融装置

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2914627T3 (es) 2011-10-27 2022-06-14 Graco Minnesota Inc Fundidor
TW201341063A (zh) * 2011-11-07 2013-10-16 Graco Minnesota Inc 冷卻系統及方法
US20140263452A1 (en) * 2013-03-13 2014-09-18 Graco Minnesota Inc. Melting system
CN106583176B (zh) * 2016-12-29 2022-11-15 北京东方诚国际钢结构工程有限公司 一种涂胶机胶桶设备及其使用方法
EP3714994A1 (fr) * 2019-03-26 2020-09-30 Sulzer Mixpac AG Piston, cartouche, distributeur

Citations (1)

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EP0434617A1 (fr) * 1989-12-19 1991-06-26 Balti Ag Dispositif d'alimentation pour des matériaux fluides, pâteux ou solides à froid, en particulier pour des adhésifs thermofusibles

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DE202007016706U1 (de) * 2007-11-28 2009-04-09 Inatec Gmbh Kolbenabstreifplatte für Auspresseinrichtung für Beutelschmelzer sowie damit verbundener Beutelschmelzer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0434617A1 (fr) * 1989-12-19 1991-06-26 Balti Ag Dispositif d'alimentation pour des matériaux fluides, pâteux ou solides à froid, en particulier pour des adhésifs thermofusibles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011504801A (ja) * 2007-11-28 2011-02-17 イナテク・ゲーエムベーハー 袋用溶融装置のための押出し手段のためのピストン式ワイパプレートおよびピストン式ワイパプレートを有する袋用溶融装置

Also Published As

Publication number Publication date
JP5435300B2 (ja) 2014-03-05
JP2011504801A (ja) 2011-02-17
US8496140B2 (en) 2013-07-30
BRPI0819720A2 (pt) 2015-06-16
BRPI0819720B1 (pt) 2019-11-12
CN101925412B (zh) 2013-09-11
ATE550107T1 (de) 2012-04-15
CN101925412A (zh) 2010-12-22
EP2227338A1 (fr) 2010-09-15
WO2009068311A1 (fr) 2009-06-04
US20100308080A1 (en) 2010-12-09
DE202007016706U1 (de) 2009-04-09

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