WO2021253602A1 - Buse de chauffage et pistolet à colle - Google Patents

Buse de chauffage et pistolet à colle Download PDF

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Publication number
WO2021253602A1
WO2021253602A1 PCT/CN2020/109094 CN2020109094W WO2021253602A1 WO 2021253602 A1 WO2021253602 A1 WO 2021253602A1 CN 2020109094 W CN2020109094 W CN 2020109094W WO 2021253602 A1 WO2021253602 A1 WO 2021253602A1
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WO
WIPO (PCT)
Prior art keywords
heating
cone
ring
electrode
inner electrode
Prior art date
Application number
PCT/CN2020/109094
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English (en)
Chinese (zh)
Inventor
柏永茂
安刚青
王腾达
Original Assignee
杭州星战科技有限公司
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.)
Filing date
Publication date
Application filed by 杭州星战科技有限公司 filed Critical 杭州星战科技有限公司
Publication of WO2021253602A1 publication Critical patent/WO2021253602A1/fr

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/44—Heating elements having the shape of rods or tubes non-flexible heating conductor arranged within rods or tubes of insulating material
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/03—Electrodes

Definitions

  • the present invention relates to the technical field of hot melt tools, and further relates to a heating nozzle. In addition, the present invention also relates to a hot melt gun.
  • hot melt guns or similar products mostly have a heating and melting device, called a quick-heat gun head or heater, which is heated to a certain temperature to melt the solid glue stick sent into a liquid state. After the liquid glue flows out from the quick-heat gun head Cool and solidify, and paste the corresponding items.
  • a heating and melting device called a quick-heat gun head or heater
  • the heating method currently used is usually electric heating.
  • a PTC ceramic heating element with a quadrangular pyramid shape is currently known in the rapid heat gun head.
  • the PTC ceramic heating element generates heat after being energized, and the glue stick is heated and melted, but the PTC ceramic heats up
  • the element has a quadrangular pyramid shape, and the contact part with the glue stick is small, and the heating efficiency of the glue stick is low.
  • the invention provides a heating nozzle, which can improve the heating efficiency of the glue stick and shorten the heating time.
  • the specific scheme is as follows:
  • a heating nozzle includes an inner electrode, a heating element, and an outer electrode.
  • the heating element is clamped between the inner electrode and the outer electrode.
  • the inner electrode and the outer electrode are respectively connected to the positive and negative terminals of a power supply.
  • the pole is used to supply power to the heating element, and the heating element is energized to generate heat and conduct heat to the inner electrode;
  • the inner electrode includes a preheating ring and a heating cone, the preheating ring is located at the lead-in end of the inner electrode, and the cylindrical surface of the inner cavity of the preheating ring can contact the surface of the glue stick for preheating and softening;
  • the heating cone is abutted with the preheating ring, and the inner surface is a revolving surface with a tapered conical surface in the axial direction, which is used for heating and melting the glue stick.
  • the heating element includes a heating ring and a heating cone
  • the heating ring is cylindrical
  • the inner surface of the heating ring contacts the outer surface of the preheating ring
  • the inner surface of the heating cone It is in contact with the outer surface of the heating cone to conduct heat.
  • the outer electrode is a conical surface-shaped revolving surface structure that is in close contact with the outer surface of the heating cone.
  • the heating cone is a concave surface of revolution; the inner surface and the outer surface of the heating cone are both concave surface of revolution; and the outer electrode is a concave surface of revolution.
  • the inner electrode further includes a cylindrical glue inlet and a cylindrical glue outlet, the diameter of the glue inlet is larger than the diameter of the preheating ring, and the diameter of the glue outlet is equal to the diameter of the glue outlet.
  • the heating element is an independent whole formed by the preheating ring and the heating cone relatively fixed.
  • the heating ring and the heating cone are independently arranged and insulated from each other, and can be spliced with each other to form the heating body; the heating ring and the heating cone are connected in parallel with each other.
  • the heating element is formed by splicing at least two parts divided in the circumferential direction, and each part includes a part of the heating ring and a part of the heating cone; the parts of each part are arranged independently of each other They are insulated from each other and connected in parallel with each other.
  • the present invention also provides a hot melt gun, which includes any one of the above-mentioned heating nozzles.
  • the invention provides a heating nozzle, which includes an inner electrode, a heating element and an outer electrode.
  • the heating element is clamped between the inner electrode and the outer electrode. Power supply, the heating element is energized to generate heat and conduct heat to the inner electrode; the inner electrode includes a preheating ring and a heating cone. Both the preheating ring and the heating cone can generate heat.
  • the preheating ring is located at the lead-in end of the inner electrode.
  • the glue stick When the glue stick extends from the lead-in end When the glue stick is in contact with the cylindrical surface of the inner cavity of the preheating ring, the glue stick is preheated and softened; the heating cone is connected to the preheating ring, and the inner surface is a revolving surface that gradually shrinks along the axial direction for the glue stick. Heating and melting, the glue stick is melted into liquid; the inner electrode in the heating nozzle provided by the present invention includes a preheating ring and a heating cone. The preheating ring first contacts the glue stick, and the glue stick is heated twice. It is more efficient and shortens the heating time.
  • Figure 1A is an exploded view of the components of the heating nozzle provided by the present invention.
  • Figure 1B is a cross-sectional view of the assembled heating nozzle provided by the present invention.
  • 2A is a schematic diagram of the structure of the inner electrode
  • Figure 2B is a schematic diagram of the structure of the heating element
  • 2C is a schematic diagram of the structure of the external electrode provided by the present invention.
  • Figure 3A is an exploded structural diagram of a second embodiment of a heating element
  • Figure 3B is an overall structure diagram of the second embodiment of the heating element after assembly
  • Figure 3C is a cross-sectional view of the second embodiment of the heating element after assembly
  • Figure 4A is an exploded structure diagram of a third embodiment of the heating element
  • Figure 4B is an overall structure diagram of the third embodiment of the heating element after assembly
  • Fig. 4C is a cross-sectional view of the third embodiment of the heating element after assembly.
  • the figure includes:
  • the core of the present invention is to provide a heating nozzle, which can improve the heating efficiency of the glue stick and shorten the heating time.
  • FIG. 1A it is an exploded view of the components of the heating nozzle provided by the present invention
  • FIG. 1B is a cross-sectional view of the assembled heating nozzle provided by the present invention; including the inner electrode 1, the heating element 2 and the outer electrode 3, and the heating element 2. Clamped between the inner electrode 1 and the outer electrode 3, the heating element 2 is in the middle, which can be in contact with the inner electrode 1 and the outer electrode 3 respectively.
  • the inner electrode 1 and the outer electrode 3 are respectively connected to the positive and negative electrodes of the power supply for
  • the heating element 2 is powered, and the heating element 2 can be an electric heating element such as a PTC ceramic heating element; the heating element 2 is energized to generate heat and generate heat.
  • the heating element 2 and the internal electrode 1 are in contact with each other and can conduct heat to the internal electrode 1. Made of high material.
  • FIG. 2A it is a schematic diagram of the structure of the inner electrode 1; the inner electrode 1 includes a preheating ring 11 and a heating cone 12.
  • the two ends penetrate, the preheating ring 11 and the heating cone 12 are butted with each other, the diameter of the largest inner diameter of the heating cone 12 is equal to the diameter of the preheating ring 11, and the heating cone 12 is butted to the preheating ring 11.
  • the preheating ring 11 is located at the lead-in end of the inner electrode 1.
  • the inner cavity surface of the preheating ring 11 is cylindrical, and the size matches the outer diameter of the glue stick. The glue stick can just contact the outer surface of the glue stick when inserted.
  • the cylindrical surface of the inner cavity of the heat ring 11 can transfer heat to the glue stick when it is in contact with the surface of the glue stick, so that the glue stick will be preheated and softened.
  • the glue stick moves forward to contact the heating cone 12, it further contacts the rotating surface of the inner cavity of the heating cone 12 to further heat the glue stick for heating and melting the glue stick so that it becomes liquid and then discharged.
  • the heating nozzle provided by the present invention heats the glue stick in two stages by setting the preheating ring 11 and the heating cone 12 at the inner electrode 1.
  • the glue stick first reaches the preheating ring 11 and then reaches the heating cone 12.
  • the heating ring 11 is in contact, since the preheating ring 11 has a cylindrical surface, it can have a larger contact area with the glue stick, so that the glue stick is softened from a solid state, and when it moves further to the heating cone 12, it is further heated by the heating cone 12 A liquid is formed, which accelerates the melting rate of the glue stick when heated, and shortens the heating time.
  • the heating element 2 provided by the present invention includes a heating ring 21 and a heating cone 22, as shown in FIG. 2B, which is a schematic structural diagram of the heating body 2;
  • the shape of the heating ring 22 is a surface of revolution; the heating ring is sleeved outside the inner electrode 1, the inner surface of the heating ring 21 and the outer surface of the preheating ring 11 contact and conduct heat, and the inner surface of the heating cone 22 contacts the outer surface of the heating cone 12 to conduct heat.
  • the contact area between the inner surface of the heating element 2 and the outer surface of the inner electrode 1 is larger, so that a better heat transfer effect can be achieved.
  • the heating element 2 is a special-shaped structure, which is composed of a cylindrical heating ring 21 and a conical heating cone 22.
  • the heating element is made of powder compaction.
  • the cylindrical section also has a structural enhancement effect on the heating element itself, reducing the parts Due to the risk of damage during assembly and use, the qualification rate and service life of parts during manufacturing and processing are improved.
  • the electrode can also be positioned by setting the cylindrical section and the conical section.
  • FIG. 2C it is a schematic diagram of the structure of the outer electrode 3 provided by the present invention.
  • the outer electrode 3 is of a rotating surface structure, and the inner surface of the outer electrode 3 is in contact with the outer surface of the heating cone 22;
  • the inner electrode 1 and the outer electrode 3 They are respectively connected to the positive and negative electrodes of the power supply to supply power to the heating element 2.
  • the heating cone 12 is a concave surface of revolution, and its section line is a concave arc; the inner surface of the heating cone 22 is in contact with the heating cone for heat conduction, so the inner surface of the heating cone 22 is a concave surface of revolution; the heating cone
  • the outer surface of 22 is also set as a concave curved surface of revolution; the outer electrode 3 is a concave curved surface of revolution, which is in contact with the outer surface of the heating cone 22 and adopts the same structure.
  • the inner electrode 1 of the present invention also includes a cylindrical glue inlet 13 and a cylindrical glue outlet 14.
  • the diameter of the glue inlet 13 is larger than the diameter of the preheating ring 11, and the glue inlet 13 is connected to the preheating ring 11.
  • a step is formed between the hot rings 11, and the diameter of the glue inlet is larger than the diameter of the glue stick, which facilitates the positioning and insertion of the glue stick;
  • the diameter of the glue outlet 14 is equal to the smallest diameter of the heating cone 12, and the contact between the glue stick and the heating cone 22 is changed. It is liquid, and the glue outlet 14 is a thin cylindrical structure, which is convenient for diversion of glue.
  • the present invention provides three specific setting forms of the heating element 2:
  • the first type the heating element 2 is an independent whole formed by the preheating ring 11 and the heating cone 12 relatively fixed, that is, the arrangement form corresponding to FIG. 2B, and the preheating ring 11 and the heating cone 12 are integrally processed and formed.
  • the inner electrode 1 and the outer electrode 3 are electrically connected to the heating element 2 respectively.
  • the second type the heating ring 21 and the heating cone 22 are independently arranged and insulated from each other, and can be spliced with each other to form the heating element 2; as shown in FIG. 3A, it is an exploded structure diagram of the second embodiment of the heating element 2; The overall structure of the second embodiment of the body 2 after assembling; Figure 3C is a cross-sectional view of the second embodiment of the heating body 2 after assembling; wherein the heating ring 21 and the heating cone 22 are independent individuals, which are spliced together to form a heating body 2.
  • the heating ring 21 and the heating cone 22 are connected in parallel with each other and independently connected to the power supply; since the heating ring 21 and the heating cone 22 are connected to the power supply in parallel, they can reduce the resistance and increase the current, thereby improving the thermal efficiency.
  • the inner electrode 1 and the outer electrode 3 are electrically connected to the heating element 2 respectively, but the relatively independent heating ring 21 and the heating cone 22 are not in direct conductive contact and are kept insulated.
  • the heating ring 21 After the heating ring 21 is connected to the lead wire, it is directly connected in parallel with the outer electrode 3, because the outer electrode 3 and the heating cone 22 are conductive, and form a pole after being connected in parallel.
  • the heating ring 21 and the heating cone 22 share the internal electrode 1 to form another pole, and no additional lead is required.
  • the heating ring 21, the heating cone 22 and the inner electrode 1 are all electrically connected.
  • the third type the heating element 2 is formed by splicing at least two segments divided in the circumferential direction. Each segment includes a part of the heating ring 21 and a part of the heating cone 22.
  • the outer surface of the inner electrode 1 and the outer electrode 3 The contact surface between the inner surface and the heating element 2 should be electrically insulated; as shown in Figure 4A, it is the exploded structure diagram of the third embodiment of the heating element 2; Figure 4B is the assembled whole of the third embodiment of the heating element 2 Structural diagram; Figure 4C is a sectional view of the third embodiment of the heating element 2 after assembly; each of the lobes preferentially adopts a centrally symmetrical arrangement, a part of the heating ring 21 and a part of the heating cone 22 are relatively fixed to form a single lobed ,
  • the heating element 2 is formed by a plurality of split lobes spliced in the circumferential direction, and the lobes of each block are kept independent of each other and insulated from each other.
  • each split of the heating element 2 is connected in parallel and then the inner electrode 1 or the outer electrode 3, and correspondingly, the other pole of each split is connected in parallel and then the outer electrode 3 or the inner electrode 1 is connected.
  • Each part of the heating element 2 is distributed separately from each other, insulated from each other, and kept insulated from the inner electrode 1 and the outer electrode 3, and an insulating isolation layer is provided.
  • the present invention also provides a hot melt gun, including the above-mentioned heating nozzle, which can achieve the same technical effect; please refer to the prior art for the structure of other parts of the hot melt gun, and the present invention will not be repeated here.

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  • Adhesives Or Adhesive Processes (AREA)
  • Coating Apparatus (AREA)

Abstract

La présente invention concerne une buse de chauffage comprenant une électrode interne, un corps émetteur de chaleur et une électrode externe. Le corps émetteur de chaleur est pris en sandwich entre l'électrode interne et l'électrode externe, et l'électrode interne et l'électrode externe sont respectivement raccordées à une anode et à une cathode d'une alimentation électrique, et sont utilisées pour fournir de l'énergie électrique au corps émetteur de chaleur. Lorsqu'il est alimenté, le corps émetteur de chaleur émet de la chaleur et transmet de la chaleur à l'électrode interne. L'électrode interne comprend une bague de préchauffage et un cône de chauffage, la bague de préchauffage et le cône de chauffage étant tous deux capables d'émettre de la chaleur, et la bague de préchauffage étant positionnée sur une extrémité d'entrée de l'électrode interne. Lorsqu'un bâton de colle est inséré à partir de l'extrémité d'entrée, l'extrémité avant du bâton de colle entre en contact avec une surface cylindrique d'une chambre intérieure de la bague de préchauffage, et le bâton de colle est ainsi préchauffé et ramolli. Le cône de chauffage vient en butée contre la bague de préchauffage, la surface interne du cône étant une surface rotative qui devient progressivement plus petite dans la direction axiale, et le cône est utilisé pour chauffer et faire fondre le bâton de colle, le bâton de colle fondant ainsi pour passer à l'état liquide. L'électrode interne dans la buse de chauffage selon la présente invention comprend une bague de préchauffage et un cône de chauffage, la bague de préchauffage entrant en contact avec un bâtonnet de colle d'abord. Le bâton de colle est chauffé deux fois, et ainsi l'efficacité de chauffage du bâton de colle est plus élevée, ce qui réduit le temps de chauffage.
PCT/CN2020/109094 2020-06-19 2020-08-14 Buse de chauffage et pistolet à colle WO2021253602A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202010567716.5A CN111586908A (zh) 2020-06-19 2020-06-19 一种加热喷嘴及热熔枪
CN202010567716.5 2020-06-19

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WO2021253602A1 true WO2021253602A1 (fr) 2021-12-23

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463877A (en) * 1981-10-26 1984-08-07 Steinel Gmbh & Co. K.G. Device for guiding a rod-shaped member formed of a gluing material which can be softened by heat
CN2628154Y (zh) * 2003-06-06 2004-07-28 黄德超 一种热熔胶枪发热壳
CN203389820U (zh) * 2013-08-19 2014-01-15 熊欣 一种ptc热熔胶枪加热器
CN205587248U (zh) * 2016-02-03 2016-09-21 卢国峰 一种速热型热熔胶枪
KR101720906B1 (ko) * 2016-09-02 2017-03-29 대구광역시 달서구 핫멜트 글루건
CN206882039U (zh) * 2017-06-16 2018-01-16 宁波市威优特电器有限公司 一种热熔胶枪

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4463877A (en) * 1981-10-26 1984-08-07 Steinel Gmbh & Co. K.G. Device for guiding a rod-shaped member formed of a gluing material which can be softened by heat
CN2628154Y (zh) * 2003-06-06 2004-07-28 黄德超 一种热熔胶枪发热壳
CN203389820U (zh) * 2013-08-19 2014-01-15 熊欣 一种ptc热熔胶枪加热器
CN205587248U (zh) * 2016-02-03 2016-09-21 卢国峰 一种速热型热熔胶枪
KR101720906B1 (ko) * 2016-09-02 2017-03-29 대구광역시 달서구 핫멜트 글루건
CN206882039U (zh) * 2017-06-16 2018-01-16 宁波市威优特电器有限公司 一种热熔胶枪

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