CN101801538B - 用于多组分喷射枪的自动溶剂注射 - Google Patents

用于多组分喷射枪的自动溶剂注射 Download PDF

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CN101801538B
CN101801538B CN200880106295.3A CN200880106295A CN101801538B CN 101801538 B CN101801538 B CN 101801538B CN 200880106295 A CN200880106295 A CN 200880106295A CN 101801538 B CN101801538 B CN 101801538B
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solvent
piston
air
rifle
hybrid chamber
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CN101801538A (zh
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理查德·D·安德森
约瑟夫·E·蒂克斯
杰弗里·N·韦尔格斯代克
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Graco Minnesota Inc
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Graco Minnesota Inc
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/802—Constructions or methods for cleaning the mixing or kneading device
    • B29B7/803—Cleaning of mixers of the gun type, stream-impigement type, mixing heads
    • B29B7/807—Cleaning of the central body of the plunger
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • B05B15/55—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids
    • B05B15/557—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter using cleaning fluids the cleaning fluid being a mixture of gas and liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7438—Mixing guns, i.e. hand-held mixing units having dispensing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/802—Constructions or methods for cleaning the mixing or kneading device
    • B29B7/803—Cleaning of mixers of the gun type, stream-impigement type, mixing heads
    • B29B7/805—Cleaning of the mixing conduit, module or chamber part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/04—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge
    • B05B7/0408—Spray pistols; Apparatus for discharge with arrangements for mixing liquids or other fluent materials before discharge with arrangements for mixing two or more liquids

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Reciprocating Pumps (AREA)

Abstract

溶剂活塞(22)在第一和第二位置之间往返移动。在第一位置中，施加到溶剂活塞(22)的后部(22a)的高压空气关闭在溶剂活塞(22)周围的溶剂孔(24)，并防止溶剂通过进入到混合腔(26)中。在第二位置中，高压空气被施加到溶剂活塞(22)的前部(22b)，引起溶剂活塞轻微地缩回，从而打开溶剂孔(24)，关闭溶剂入口(28)，并允许一部分溶剂与清除空气(32)混合，从溶剂出口(30)通过进入到混合腔(26)中。溶剂是自身包含在涂覆器中的或者是永久地铅封于喷枪。

Description

用于多组分喷射枪的自动溶剂注射
技术领域
本申请要求2007年9月11日提交的序列号为60/971,305的美国申请的利益，该申请的内容通过参考结合于此。
背景技术
涂覆多组分材料例如快速固化泡沫的喷射枪广为人知，并且典型地在机械清除和空气清除变型中都是可以的。先前已知的在机械清除枪中清除两种组分材料的手段是通过机械清除杆，使其滑动通过混合孔。这种设置具有这样的问题：清除杆由于所喷射的材料的累积而粘结在孔内部。
在空气清除枪中，先前的清除两种组分材料的手段是通过高压空气清除(鼓风通过混合腔)。这种设计导致在混合腔内部通道和喷射顶端上的累积，引起喷射图案的劣化，从而要求操作者清洁混合腔以恢复功能。
发明内容
本发明的目的在于防止混合的两种组分聚氨酯在喷射涂覆器的内部通道内凝固，以允许使用者在喷射图案发生变形或喷枪需要维护之前喷射更长时间。
机械清除枪通过内部泵送机构分配溶剂。清除杆包括小直径杆和大直径杆。当清除杆穿过混合腔被拉回时，小杆部分替代大杆，从而产生真空以吸入溶剂。当杆向前移动，以关闭枪时，溶剂在压力下从内部泵沿着清除杆的表面排入到混合腔中，并从混合腔与所混合的两种组分材料一起被从枪中清除。溶剂是自身包含在涂覆器中的或者是永久地铅封于(plumbed eternally)枪。
空气清除枪在不触发(detrigger)下通过内部的计量泵自动地分配溶剂。分配的溶剂与清除空气混合并通过混合腔孔从枪排出。可选地，空气清除枪在不触发下通过内部的泵送机构自动地分配溶剂。分配的溶剂与清除空气混合并通过混合腔孔从枪排出。在另一实施方式中，空气清除枪在不触发下通过文丘里效应自动地分配溶剂。溶剂被注入到空气流中，并从涂覆器通过混合腔孔排出。溶剂是自身包含在涂覆器中的或者是永久地铅封于枪。
本发明的这些和其他目的将从下面结合附图的说明中变得更加完整，其中在所有几个图中，相似的附图标记表示相同或相似的部件。
附图说明
图1示出机械式清除喷射枪，其示出为本发明的装置。
图2示出空气清除枪的优选实施方式，其中枪没有喷射。
图3示出空气清除枪的优选实施方式，其中枪正在喷射。
图4示出空气清除枪的可替代实施方式。
图5示出空气清除枪的又一可替代实施方式。
图6示出空气清除枪的再一可替代实施方式。
具体实施方式
图1的机械式清除枪10通过内部的泵送机构分配溶剂。清除杆12包括小直径杆14和大直径杆16。当将清除杆12向后拉动穿过混合腔18时，较小的杆14部分替代较大的杆16，从而产生真空，从溶剂入口20吸入溶剂。当杆12向前移动以关闭枪10时，溶剂在压力下从内部泵沿着清除杆12的表面被排到混合腔18中，并从混合腔18与所混合的两种组分材料一起被从枪10中清除。溶剂是自身包含在涂覆器中的或者是永久地铅封于枪。
在图2和3的优选实施方式中，溶剂活塞22在第一(非喷射-图2)和第二(喷射-图3)位置之间往返移动。在第一位置中，施加到溶剂活塞22的后部22a的高压空气关闭在溶剂活塞22周围的溶剂孔24，并防止溶剂通过进入到混合腔26中。在第二位置中，高压空气施加到溶剂活塞22的前部22b，引起活塞轻微地缩回，从而打开溶剂孔24，关闭溶剂入口28，并允许一部分溶剂与清除空气32混合，从溶剂出口30进入到混合腔26中。
在图4的可替代实施方式中，空气清除枪在不触发下通过内部的计量泵40自动地分配溶剂。分配的溶剂与清除空气42混合并通过混合腔孔44被排出枪。
在图5的又一可替代实施方式中，空气清除枪在不触发下通过内部的泵送机构50自动地分配溶剂。分配的溶剂与清除空气52混合并通过混合腔孔54被排出枪。
在图6的再一可替代实施方式中，空气清除枪在不触发时通过文丘里效应60自动地分配溶剂。溶剂注入到空气流62中，并从涂覆器通过混合腔孔64被排出。溶剂是自身包含在涂覆器中的或者是永久地铅封于枪。
可以理解的是，在不脱离所附的权利要求书限定的本发明的精神和范围的情况下，可以对溶剂清除机构作出不同的改变和变形。

Claims (1)

1.一种利用清除空气进行清除的多组分喷射枪，其具有混合腔和清除空气通道，所述喷射枪的改进包括：
溶剂源；
溶剂入口和溶剂出口；和
具有前部和后部的溶剂活塞，所述溶剂活塞能够在第一非喷射位置和第二喷射位置之间移动，使得在所述第一非喷射位置中，高压空气被施加到所述后部，以关闭在所述溶剂活塞周围的溶剂孔，从而防止溶剂通过进入到所述混合腔中，而在所述第二喷射位置中，在不触发所述喷射枪时，高压空气被施加到所述前部，引起所述溶剂活塞缩回，从而打开所述溶剂孔，关闭所述溶剂入口，并允许一部分溶剂在所述清除空气通道中与清除空气混合，进而从所述溶剂出口通过所述清除空气通道进入到所述混合腔中。
CN200880106295.3A 2007-09-11 2008-09-11 用于多组分喷射枪的自动溶剂注射 Active CN101801538B (zh)

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US97130507P 2007-09-11 2007-09-11
US60/971,305 2007-09-11
PCT/US2008/075963 WO2009036129A1 (en) 2007-09-11 2008-09-11 Automatic solvent injection for plural component spray gun

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TWI453070B (zh) * 2007-09-11 2014-09-21 Graco Minnesota Inc 複數成分噴槍的自動溶劑噴射
US20150072081A1 (en) * 2013-09-10 2015-03-12 Ryan Winston MONCHAMP External coating method and apparatus
CN202146838U (zh) * 2011-05-30 2012-02-22 潘星钢 一体式气动喷枪
US9038929B1 (en) * 2011-06-17 2015-05-26 Pmc, Inc. Air spray gun with pattern control tip
US9174362B2 (en) 2011-07-12 2015-11-03 Castagra Products, Inc. Solvent-free plural component spraying system and method
CN111451222A (zh) * 2020-03-18 2020-07-28 成都东日瑞姆机械有限公司 可添加粉末组分多流道浇注的聚氨酯发泡设备
BE1029916B1 (nl) 2022-06-10 2023-06-07 Altachem Nv Schoonmaakgereedschap voor schuimpistolen
WO2024097050A1 (en) * 2022-11-04 2024-05-10 Graco Minnesota Inc. Solvent dosing and dose piston for a spray applicator

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TWI453070B (zh) 2014-09-21
EP2195117A1 (en) 2010-06-16
BRPI0816752A2 (pt) 2015-03-17
AU2008298911B2 (en) 2012-12-20
ES2383642T3 (es) 2012-06-25
US8297531B2 (en) 2012-10-30
JP5406190B2 (ja) 2014-02-05
KR20100075489A (ko) 2010-07-02
WO2009036129A1 (en) 2009-03-19
US20110101129A1 (en) 2011-05-05
TW200932366A (en) 2009-08-01
AU2008298911A1 (en) 2009-03-19
ATE553850T1 (de) 2012-05-15
JP2010538815A (ja) 2010-12-16
EP2195117A4 (en) 2010-09-22
EP2195117B1 (en) 2012-04-18
KR101487047B1 (ko) 2015-01-28
CN101801538A (zh) 2010-08-11

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