EP3012033B1 - Pistolet de colle chaude - Google Patents

Pistolet de colle chaude Download PDF

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Publication number
EP3012033B1
EP3012033B1 EP15075031.3A EP15075031A EP3012033B1 EP 3012033 B1 EP3012033 B1 EP 3012033B1 EP 15075031 A EP15075031 A EP 15075031A EP 3012033 B1 EP3012033 B1 EP 3012033B1
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EP
European Patent Office
Prior art keywords
hot glue
melting chamber
cavity
glue gun
adhesive
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
EP15075031.3A
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German (de)
English (en)
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EP3012033A1 (fr
Inventor
Reinhard Helms
Hermann Kruse
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.)
Buehnen & Co KG GmbH
Original Assignee
Buehnen & Co KG GmbH
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Publication of EP3012033A1 publication Critical patent/EP3012033A1/fr
Application granted granted Critical
Publication of EP3012033B1 publication Critical patent/EP3012033B1/fr
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    • 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
    • B05C17/00523—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 provided with means to heat the material
    • B05C17/00526—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 provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application
    • B05C17/0053—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 provided with means to heat the material the material being supplied to the apparatus in a solid state, e.g. rod, and melted before application the driving means for the material being manual, mechanical or electrical
    • 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
    • B05C17/00523—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 provided with means to heat the material
    • B05C17/00546—Details of the heating means

Definitions

  • the present invention relates to a hot melt glue gun for strand-like hot melt glue sticks with a melting chamber that can be heated by a heating element for heating the hot melt glue stick, which has an inlet opening on one side - entry side - through which the solid hot melt glue stick can be inserted into an elongated cavity of the melting chamber, as well as one or more Outlet openings through which a liquefied part of the hot melt adhesive can flow out of the cavity of the melting chamber after heating, and with an outlet opening arranged in particular on a nozzle head of the hot glue gun, through which the hot melt adhesive that has flowed out of the melting chamber can exit the hot glue gun.
  • Such hot glue guns have been known for a long time. They are used to bond a wide variety of objects.
  • a manual trigger By means of a manual trigger, an operator can actuate a feed device which moves the hot melt adhesive stick into the melting chamber or conveys it further in the melting chamber.
  • the liquefied part of the hot melt adhesive then flows out of the melting chamber through the outlet openings.
  • these outlet openings are located at the other or opposite end of the melting chamber with respect to the inlet side, namely regularly directly adjacent to the nozzle head of the hot glue gun following in the flow direction of the adhesive.
  • the liquid adhesive can then flow more or less directly into the nozzle head, where it can then flow out of the hot gun via the (front) outlet opening of the same.
  • the disadvantage of the hot glue guns known in the prior art is that a relatively high heating power is required to use the hot glue stick when the To liquefy the hot glue gun in an acceptable time so that the hot glue gun is ready for use or to be able to liquefy sufficient hot melt adhesive during operation so that a continuous supply of liquid hot melt adhesive is made available if necessary.
  • U.S. 3,298,572 A hot glue gun of the type mentioned is known, in which the melting chamber has a conical tip with several lateral outlet openings.
  • U.S. 3,298,572 discloses the preamble of claim 1.
  • the U.S. 4,637,745 A shows a hot glue gun with a melting chamber, which has a cone-like cross section and in the cavity of which several lamellae are arranged. The melted hot glue is dispensed to a nozzle head through a front exit opening.
  • a hot melt glue gun is known, the melting chamber of which has elongated outlet openings.
  • the outlet openings are arranged in a conical wall of the melting chamber and allow the melted hot melt adhesive to exit from the side.
  • a front area of the melting chamber is closed with a closing element.
  • At least one (regularly several) or the outlet opening of the melting chamber is arranged in such a way that the liquid hot melt adhesive can flow out of the cavity laterally, namely at an angle, preferably essentially perpendicular to the longitudinal extent of the cavity.
  • the applicant has recognized that due to the arrangement of the melting chamber outlet openings at the front or axial end of the melting chamber or the melting chamber cavity, which is common in the prior art, which leads to the hot melt adhesive emerging from the hollow chamber in the longitudinal direction, it may not be sufficiently melted Hot glue of the hot melt glue stick one or more Can block outlet openings.
  • the "front" end of the melting chamber cavity denotes the end opposite / opposite to the entry end of the same or the rear end.
  • the inventive arrangement of one or more outlet openings in the side area of the cavity or in a corresponding peripheral wall of the melting chamber enclosing the cavity for a clear improvement of the hot melt adhesive outflow from the melting chamber and thus for an increase in the possible outflow quantity per unit of time.
  • outlet openings (s) can also still be provided through which the hot melt adhesive in a known manner in the longitudinal direction or in the axial direction can flow out of the hollow chamber.
  • outlet openings (s) can also be used, through which the hot-melt adhesive can flow out both laterally and in the longitudinal direction.
  • the lateral outlet openings of the melting chamber can be formed by suitable openings in the peripheral wall of the melting chamber.
  • the outlet openings are preferably separated from one another in the circumferential direction of the circumferential wall by web-like wall sections formed by the circumferential wall.
  • the or each outlet opening through which the hot melt adhesive can exit laterally is elongated and extends to the end of the same opposite the inlet end of the melting chamber, in such a way that the hot melt adhesive can also exit the cavity parallel to the longitudinal extension of the melting chamber.
  • the one or more outlet openings are expediently arranged in a circumferential wall of the melting chamber that surrounds the melting chamber cavity over the whole or over a part of its length.
  • the shape of the melting chamber cavity is preferably designed in a manner known per se along a longitudinal center axis or at least along a longitudinal center plane, symmetrically, in particular as a hollow cylinder.
  • a plurality of ribs can be arranged in the cavity which enclose or delimit a free space which tapers conically to the end of the melting chamber opposite the inlet opening for the melt stick.
  • the conically tapering free space is preferably dimensioned in such a way that a solid, i.e. not yet melted, hot-melt adhesive stick, due to an excessively large cross section, could not penetrate into the end area of the same, but possibly only into a (rearward) starting area of the free space in which its cross section this may be permitted.
  • the ribs are preferably arranged distributed with identical angular distances from one another along the corresponding inner circumferential surface of the melting chamber delimiting the cavity.
  • the lateral openings are expediently arranged between two adjacent ribs of the above-mentioned ribs.
  • the melting chamber also has outlet openings in the manner described above through which the hot-melt adhesive can exit from the cavity in the longitudinal direction, it is useful if there is a free space between adjacent ribs in the longitudinal direction of the cavity the liquid hot melt adhesive can flow through in this longitudinal direction, up to these outlet openings.
  • the at least one outlet opening is delimited or covered laterally on the outside by an in particular circumferential wall of a nozzle head having the outlet opening of the hot melt glue gun, which wall runs at a lateral distance from it, so that a cavity is formed between the outlet opening and the aforementioned wall of the Nozzle head results.
  • the hot melt adhesive can then be guided along this cavity in the direction of the outlet opening of the nozzle head.
  • a corresponding channel is regularly formed between the at least one outlet opening of the melting chamber on the one hand and the outlet opening of the nozzle head on the other hand, through which the liquid hot melt adhesive can flow to the outlet opening when the hot glue gun is in operation, in particular after transferring a closure means that otherwise closes the channel into a Channel-releasing position.
  • the closure means can for example open or close automatically depending on the applied hot-melt adhesive pressure.
  • At least a section of the aforementioned channel can be formed by the aforementioned cavity between the at least one outlet opening and the wall of the nozzle head that covers it.
  • the cavity of the melting chamber has a separate, elongated insert body which extends in the direction of the front end of the melting chamber or in the direction of the inlet opening Melt chamber opposite end conically tapering, by a correspondingly conically tapering inner circumferential surface of the insert body limited (inner) hollow or free space for receiving a front portion of the hot melt glue stick.
  • the contour of the inner circumferential surface of the insert body is matched to the corresponding outer diameter of the fixed adhesive stick in such a way that the above-mentioned inner circumferential surface prevents the adhesive stick from penetrating deeper into the conical free space above a certain penetration depth. In other words, the stick then hits the inner peripheral surface and is blocked by it.
  • the glue stick is liquefied by the heat from the heating element.
  • the insert body preferably has in particular elongated passage openings through which the liquid hotmelt adhesive can then flow out of the free space of the insert body into a free space or into a free area between the insert body and the peripheral wall of the melting chamber. The liquid adhesive can then flow from this free area to the at least one outlet opening of the melting chamber.
  • the insert body is preferably seated precisely in the cavity of the melting chamber, preferably held therein with a friction fit.
  • ribs running in the longitudinal direction can be provided, which are arranged distributed on a preferably conical outer surface of the insert body, and which bear (frictionally) against an inner circumferential surface of one or the circumferential wall of the melting chamber delimiting the cavity.
  • Channels can be formed between the ribs, along which the liquid adhesive, which previously - coming from the free space of the insert body - flowed through the passage openings of the insert body into the channels, is guided.
  • a hot glue gun 10 has, inter alia, a known housing 12 with handle 14, trigger 16, nozzle head 18, feed device 20, melting chamber 22 and heating element 24.
  • an operator can actuate a feed device 20, which is not described in more detail at this point and is known, which ensures that a strand-shaped, cylindrical hot-melt adhesive stick 26 can be moved in the direction of the front end of the gun 10, namely in the direction of the nozzle head 18 .
  • the melting chamber 22, in which the respective section of the glue stick 26 located therein is melted, has an elongated cavity 34 which is symmetrical about a longitudinal center plane. This is formed or limited by a peripheral wall 36 of the melting chamber 22 with a cylindrical inner peripheral surface 38 in the present case A section of the hot-melt glue stick 26 is located inside the cavity 34.
  • the part of the glue stick 26 located within the cavity 34 is liquefied by means of the heating element 24.
  • the heating element 24 heats the melting chamber 22, in particular the peripheral wall 36 delimiting the cavity 34.
  • the liquid hot melt adhesive then emerges from the front outlet openings 28 of the nozzle head 18 of the hot melt glue gun 10.
  • the nozzle head 18 is ultimately designed as a valve which opens only when the liquid hot melt adhesive has reached a certain pressure.
  • the nozzle head 18 has a corresponding, closable and openable closure means 31 for this purpose.
  • the closure means 31 comprises a ball 30 serving as a closure member which, when the adhesive pressure is appropriate, counteracts the restoring forces of a restoring member of the closure means 31, in the present case a spring 32, from an inter alia Figure 2b shown closed position can be brought into an open position.
  • a plurality of outlet openings 40 spaced apart from one another are formed in the circumferential direction (in the present case four outlet openings 40). These outlet openings 40 are formed by clearances in the circumferential wall 36 running in the longitudinal direction of the cavity 34.
  • webs 42 formed by the circumferential wall 36 are arranged between two adjacent outlet openings 40.
  • the liquid adhesive can emerge from the cavity 34 through the outlet openings 40.
  • the outlet openings 40 are arranged in such a way that the adhesive can emerge laterally, in the present case perpendicular to the longitudinal extent of the cavity 34 Adhesive also flow out of the cavity 34 at the front in the longitudinal direction of the latter.
  • the maximum amount per unit of time of adhesive that can emerge from the cavity 34 can be significantly increased compared to the solutions of the prior art. This leads to a higher performance of the hot glue gun.
  • ribs 46 extending in the longitudinal direction thereof are arranged in the cavity 34. In relation to the circumferential direction of the inner circumferential surface 38 of the melting chamber 22, these are distributed on the inner circumferential surface 38 at the same angular intervals in each case and are preferably connected to it. With others In words, the angular spacings between adjacent ribs 46 are essentially identical for all ribs 46.
  • the ribs are wedge-shaped or wedge-shaped in the axial direction or in the longitudinal direction and enclose or limit a free space 48 that tapers in the direction of the front end of the cavity 34, that is, in the direction of the outlet end.
  • This tapering free space 48 ensures that a corresponding adhesive stick 26 adapted to the diameter of the melting chamber cavity 34 cannot penetrate so deeply into the cavity 34 that it - in the remelted state - can cover and block the outlet openings 40.
  • Each rib 46 is assigned to or connected to a web 42.
  • the outlet openings 40 are accordingly positioned in such a way that they are each arranged between two adjacent ribs 46 in relation to the cavity 34, so that liquid adhesive can flow through between the ribs 46 to the respective outlet opening 40.
  • outlet openings 40 can naturally also be provided. It is important that these are arranged and designed in such a way that a lateral outflow of the adhesive from the cavity 34 is possible.
  • the adhesive flowing out of the outlet openings 40 is then directed to the outlet opening 28 of the nozzle head 18 via one or more suitable channels.
  • a circumferential wall 50 of the nozzle head 18 is provided coaxially and at a radial distance from the outlet openings 40. Accordingly, an annular channel 52 is formed between wall 50 and outflow openings 40, into which the laterally exiting adhesive can enter.
  • a (circular) cylindrical channel 54 which extends transversely to the longitudinal extent of the cavity 36, adjoins the annular channel 52 directly in front of the front end wall 44 of the melting chamber 22. It is formed by a corresponding annular wall section 56 of the nozzle head 18, an annular subsection of the circumferential wall 50 of the same and the outside of the end wall 44 of the melting chamber 22.
  • the cylindrical channel 54 is finally connected to an axial nozzle channel 58 which extends as far as the outlet opening 28.
  • This axial nozzle channel 58 is closed by the ball 30 as long as the adhesive pressure is not sufficiently high.
  • Fig. 6 and 7th show a modified embodiment of the invention. Compared to the embodiment of Fig. 1-5 Functionally identical components are marked with identical reference numbers.
  • an elongated insert (hollow) body 60 is arranged in the cavity 34 of the melting chamber 22.
  • This has an essentially closed peripheral wall 62 which tapers conically towards the end opposite the inlet end of the melting chamber 22 or towards the outlet end of the melting chamber 22.
  • the peripheral wall 62 encloses a correspondingly tapering cavity or free space 64. More precisely, this free space 64 is delimited on the outside by an inner peripheral surface 66 of the peripheral wall 62.
  • the insert 60 or the free space 64 On the side facing the inlet end of the melting chamber 22, the insert 60 or the free space 64 has an inlet opening 68 for the hot melt adhesive stick 26.
  • ribs 70 running in the longitudinal direction are arranged on the circumferential wall 62 of the insert body 60.
  • these ribs 70 are arranged in a wedge shape on a conically running section of the peripheral wall 62 of the insert body 60.
  • each rib 70 increases in the longitudinal direction, so that each rib 70, despite the conicity of the circumferential wall 62, essentially over its entire length on the inner circumferential surface 38 of the Cavity 34 of the melting chamber 22 rests.
  • the ribs 70 are distributed in the circumferential direction of the circumferential wall 62 of the insert body 60 at the same angular intervals on the circumferential wall 62 and are preferably connected in one piece with the latter.
  • the angular spacings between adjacent ribs 70 are essentially identical for all ribs 70.
  • channels 72 which are delimited by these are formed between the ribs 70 and extend in the longitudinal direction to the outlet end of the melting chamber 22.
  • passage openings 74 or clearances are arranged in the peripheral wall 62 of the insert body 60, each of which connects the free space 64 to a channel 72 in a medium-conducting manner.
  • these passage openings 74 are designed as elongated slots which extend essentially in the longitudinal direction.
  • the tapering free space 64 serves to receive the front end of the glue stick 26.
  • the tapering of the free space 64 ensures that the penetration depth of an adhesive stick that is adapted to the diameter of the melting chamber cavity 34 and is essentially fixed before the melting process into the free space 64 is limited, since the adhesive stick 26 is reduced by the inner diameter that decreases in the direction of the outlet end of the melting chamber 22 of the free space 64 abuts the circumferential wall 62 of the insert body 60 at a certain penetration depth and is thereby prevented from penetrating even deeper into the free space 64.
  • the adhesive stick section located within the free space 64 is heated by the heat of the heating element 24 during operation of the hot glue gun 10. After liquefaction, the adhesive penetrates through the passage openings 74 into the channels 72.
  • the channels 72 lead to the outlet openings 40 of the melting chamber 22, through which the liquid adhesive flows and flows to the nozzle head 18 in the manner already described above.
  • Hot gun 58 Nozzle channel 12 casing 60 Insert body 14th Handle 62 Perimeter wall 16 Trigger 64 free space 18th Nozzle head 66 Inner peripheral surface 20th Feed device 68 Inlet opening 22nd Melting chamber 70 Ribs 24 Heating element 72 channels 26th Glue stick 74 Passage openings 28.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Coating Apparatus (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Claims (13)

  1. Pistolet à colle chaude pour des bâtons de colle thermofusible en forme de fil (26) avec une chambre de fusion (22) qui peut être chauffée par un élément chauffant (24) pour chauffer le bâton de colle thermofusible (26), qui présente une ouverture d'entrée sur un côté - côté entrée - à travers laquelle le bâton de colle thermofusible solide (26) peut être introduit dans une cavité allongée (34) de la chambre de fusion (22), ainsi qu'une ou plusieurs ouvertures de sortie (40), à travers lesquelles une partie liquéfiée de la colle thermofusible peut s'écouler hors de la cavité (34) de la chambre de fusion (22) après le chauffage, et avec une ouverture de sortie (28) disposée en particulier à la tête de buse (18) du pistolet à colle chaude (10) à travers laquelle la colle thermofusible qui s'est écoulée hors de la chambre de fusion (22) peut sortir du pistolet à colle chaude (10),
    caractérisé en ce
    qu'au moins une ouverture de sortie (40) de la chambre de fusion (22) est agencée de telle sorte que la colle thermofusible liquide puisse s'écouler latéralement hors de la cavité (34), à savoir essentiellement en perpendiculaire à l'extension longitudinale de la cavité (34),
    dans lequel la ou chaque ouverture de sortie (40) est de forme allongée et s'étend jusqu'à l'extrémité de celle-ci opposée à l'extrémité d'entrée de la chambre de fusion (22), si bien que la colle thermofusible peut également sortir de la cavité (34) de la chambre de fusion (22) parallèlement à l'extension longitudinale de la chambre de fusion (22), et en raison de l'extension de l'ouverture de sortie (40) jusqu'à une paroi terminale avant (44) de la chambre de fusion (22) s'étendant transversalement à l'extension longitudinale de la cavité (34), la colle peut s'écouler également avant dans la direction longitudinale de la cavité (34) hors de celle-ci.
  2. Pistolet à colle chaude selon la revendication 1, caractérisé en ce que l'au moins une ouverture de sortie (40) est disposée dans une paroi circonférentielle (36) de la chambre de fusion (22) et entourant la cavité de la chambre de fusion (34) sur toute ou partie de sa longueur.
  3. Pistolet à colle chaude selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'une pluralité d'ouvertures de sortie séparées (40) sont disposées le long de la paroi circonférentielle (36) dans la direction circonférentielle.
  4. Pistolet à colle chaude selon la revendication 3, caractérisé en ce que les ouvertures de sortie (40) sont séparées les unes des autres dans le sens circonférentiel par des sections de paroi en forme de bande (42) formées par la paroi circonférentielle (36).
  5. Pistolet à colle chaude selon une ou plusieurs des revendications précédentes, caractérisé en ce que l'au moins une ouverture de sortie (40) est respectivement limitée ou recouverte latéralement à l'extérieur par une paroi particulièrement circonférentielle (50) d'une tête de buse (18) ayant l'ouverture de sortie (28), ladite paroi périphérique s'étendant à une distance latérale de l'ouverture de sortie (40) si bien qu'une cavité (52) se forme entre l'ouverture de sortie (40) et la paroi (50) de la tête de buse (18) dans laquelle la colle thermofusible liquide peut pénétrer.
  6. Pistolet à colle chaude selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'un canal (53) est formé entre l'au moins une ouverture de sortie (40) de la chambre de fusion (22) et l'ouverture de sortie (28) de la tête de buse (18), canal à travers lequel la colle thermofusible liquide peut s'écouler vers l'ouverture de sortie (28) pendant le fonctionnement du pistolet à colle chaude.
  7. Pistolet à colle chaude selon les revendications 5 et 6, caractérisé en ce qu'une section de ce canal (53) est formée par la cavité (52) entre l'au moins une ouverture de sortie (40) et la paroi (50) de la tête de buse (18) qui la recouvre.
  8. Pistolet à colle chaude selon une ou plusieurs des revendications précédentes, caractérisé en ce que dans la cavité (34) de la chambre de fusion (22) s'étendent dans la direction longitudinale de plusieurs, en particulier des nervures en forme de çoin (46) qui sont conçues de telle sorte qu'elles renferment conjointement un espace libre (48) effilé dans la direction de l'extrémité de la chambre de fusion (22) opposée à l'ouverture d'entrée de la chambre de fusion (22), dont le contour est adapté au diamètre extérieur du bâton de colle thermofusible solide (26) de telle manière que le bâton de colle (26) à partir d'une certaine profondeur de pénétration est empêché de pénétrer davantage dans l'espace libre (48) par les nervures (46).
  9. Pistolet à colle chaude selon la revendication 8, caractérisé en ce que les nervures (46) sont réparties sur la surface circonférentielle intérieure (38) de l'une ou de la paroi circonférentielle (36) de la chambre de fusion (22) délimitant la cavité (34), notamment avec des distances angulaires entre deux nervures adjacentes, lesdites distances angulaires étant essentiellement identiques dans le sens circonférentiel (46).
  10. Pistolet à colle chaude selon la revendication 8 ou 9, caractérisé en ce qu'une ouverture de sortie (40) est disposée dans la paroi circonférentielle (36) de la chambre de fusion (22) entre deux nervures adjacentes (46) respectives si bien que la colle thermofusible liquide peut s'échapper latéralement à travers l'ouverture de sortie (40).
  11. Pistolet à colle chaude selon une ou plusieurs des revendications précédentes, caractérisé en ce que dans la cavité (34) est disposé un corps d'insert allongé (60) ayant respectivement une cavité et un espace libre (64) se rétrécissant de manière conique vers l'extrémité de la chambre de fusion (22), ladite extrémité étant opposée l'ouverture d'entrée de la chambre de fusion (22), et étant délimité par une surface périphérique intérieure se rétrécissant de manière conique correspondante (66) du corps d'insert (60),
    le contour de la surface circonférentielle intérieure (66) du corps d'insert étant adapté au diamètre extérieur du bâton de colle thermofusible solide (26) si bien que le bâton de colle (26) est empêché de pénétrer plus profondément dans l'espace libre conique (64) à travers la surface circonférentielle intérieure (66) à partir d'une certaine profondeur de pénétration.
  12. Pistolet à colle chaude selon la revendication 11, caractérisé en ce que le corps d'insert (60) présente des ouvertures de passage particulièrement allongées (74) à travers lesquelles la colle thermofusible peut s'écouler de l'espace libre (64) du corps d'insert (60) vers l'extérieur dans une zone entre le corps d'insert (60) et la paroi circonférentielle (36) de la chambre de fusion (22).
  13. Pistolet à colle chaude selon la revendication 11 ou 12, caractérisé en ce que le corps d'insert (60) présente des nervures (70) réparties au niveau d'une surface extérieure particulièrement conique, lesdites nervures se butent à une surface périphérique intérieure (38) d'une ou de la paroi périphérique (36) de la chambre de fusion (22), la paroi périphérique délimitant la cavité (34).
EP15075031.3A 2014-10-16 2015-09-25 Pistolet de colle chaude Active EP3012033B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014015211.1A DE102014015211A1 (de) 2014-10-16 2014-10-16 Heißklebepistole

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Publication Number Publication Date
EP3012033A1 EP3012033A1 (fr) 2016-04-27
EP3012033B1 true EP3012033B1 (fr) 2021-01-13

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DE (1) DE102014015211A1 (fr)

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CN107362946A (zh) * 2017-05-23 2017-11-21 杭州科龙电器工具股份有限公司 一种热熔胶枪速热枪头以及热熔胶枪
CN107159530A (zh) * 2017-06-16 2017-09-15 奉化市威优特电器有限公司 一种热熔胶枪的加热装置
CN107199155A (zh) * 2017-06-16 2017-09-26 奉化市威优特电器有限公司 一种热熔胶枪

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