CN105172089A - 一种led柔性灯带的生产方法 - Google Patents

一种led柔性灯带的生产方法 Download PDF

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CN105172089A
CN105172089A CN201510678727.XA CN201510678727A CN105172089A CN 105172089 A CN105172089 A CN 105172089A CN 201510678727 A CN201510678727 A CN 201510678727A CN 105172089 A CN105172089 A CN 105172089A
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led
core bar
production method
lamp
soft light
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李小兵
张培良
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ZHONGSHAN OUMAN TECHNOLOGY LIGHTING CO LTD
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ZHONGSHAN OUMAN TECHNOLOGY LIGHTING CO LTD
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Publication of CN105172089A publication Critical patent/CN105172089A/zh
Priority to US15/295,683 priority patent/US10317023B2/en
Priority to US16/400,586 priority patent/US10731805B2/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00Lighting devices or systems using a string or strip of light sources
    • F21S4/20Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/22Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape
    • F21S4/24Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports flexible or deformable, e.g. into a curved shape of ribbon or tape form, e.g. LED tapes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0022Combinations of extrusion moulding with other shaping operations combined with cutting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001Combinations of extrusion moulding with other shaping operations
    • B29C48/0023Combinations of extrusion moulding with other shaping operations combined with printing or marking
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/15Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
    • B29C48/154Coating solid articles, i.e. non-hollow articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/17Articles comprising two or more components, e.g. co-extruded layers the components having different colours
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05Filamentary, e.g. strands
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/34Electrical apparatus, e.g. sparking plugs or parts thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • F21V3/02Globes; Bowls; Cover glasses characterised by the shape
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • F21V3/04Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/06Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/062Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
    • F21V3/0625Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics the material diffusing light, e.g. translucent plastics
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

本发明公开了一种LED柔性灯带的生产方法,包括以下步骤:1)挤塑成型芯条;2)芯条开LED灯珠孔和标注裁剪标记;3)LED柔性电路板装入芯条;4)挤塑成型灯条外皮即扩散条;采用本方法后,芯条横截面形状能够根据设计需要,制作成多种多样的风格;同样,外皮的横截面形状也可以制作成多种多样,并且通过多色挤塑成型,外皮的材料及颜色搭配也可以多种组合,如掺入彩色的装饰条、外皮部分区域做成不透光层等;以挤塑成型的方式将薄膜条与芯条包裹,贴合间隙小,贴合稳定牢固,使用中不会因弯折、拉扯而导致薄膜条移动、错位,进而影响装饰效果;整个过程,人工介入少,自动化程度高,能大大提高生产效率、产品稳定性和产品品质可控性。

Description

一种LED柔性灯带的生产方法
技术领域
本发明涉及LED照明领域,特别涉及具有装饰性的全天候LED柔性灯带的生产方法。
背景技术
LED柔性灯带应用十分广泛,无论家庭还是商业场所,都有LED柔性灯带的身影。早期的LED柔性灯带的生产方法是将贴片了LED灯珠的柔性电路板穿入硅胶套管或者PVC透明管中,然后将对硅胶管或PVC管加热,使其产生热收缩,形成LED柔性灯带。这种方式较适合生产结构简单的产品,热缩管与LED柔性电路板的包覆过程不便于控制,而且对于结构复杂、灯体外皮花色较多的产品,就会捉襟见肘,不但产品看起来显得粗糙不精美,而且生产效率较低。
经过一番研究,本发明人研发出一种新型结构的LED柔性灯带,并通过中国专利CN204227151U进行了披露,如图1所示。该LED柔性灯带主要包括扩散条,扩散条内包含有芯条,芯条内包含LED灯珠和柔性电路板,芯条与扩散条之间设有薄膜条,扩散条底部设置有挡光条及透明条。对于该LED柔性灯带产品,目前市面上较少有高效的生产方法来保证其生产效率和产品稳定性。
针对该问题,本发明人经过长期摸索,发明了一种LED柔性灯带的生产方法,使得生产效率和产品优率均大幅度提升。
发明内容
本发明所采用的LED柔性灯带的生产方法包括以下步骤:
1)挤塑成型芯条:将芯线自卷轴送入挤塑设备的成型模具内,挤塑设备中的胶料通过成型模具连续地包覆于所述芯线外部,从成型模具内生产出来的芯条浸入冷却液中冷却,充分干燥;
2)芯条开LED灯珠孔和标注裁剪标记:将芯条送入冲压设备的冲裁模具内,在芯条上安放LED灯珠的侧面冲裁出灯珠孔,灯珠孔大小和间距与所安放的LED灯珠尺寸及灯珠在柔性电路板上的间距相应;按照预定的分支电路的LED灯珠数目,在各相邻的分支电路连接处标注裁剪标记;
3)LED柔性电路板装入芯条:将LED柔性电路板装入芯条中,LED灯珠均进入所述灯珠孔中,随后将LED柔性电路板上各分支电路的电源引线与芯条中的芯线电导通连接;
4)挤塑成型灯条外皮即扩散条:将第3)得到的芯条送入多色挤塑设备的模具中,同时也将薄膜条送入多色挤塑设备的模具中,薄膜条覆盖在LED灯珠的发光面的一侧,多色挤塑设备中分装的不同颜色和特性的胶料通过成型模具连续地包覆于芯线外部,从成型模具内生产出来的LED柔性灯带浸入冷却液中冷却,充分干燥。
进一步,在第3)步骤LED柔性电路板装入芯条前,进行以下步骤:
A)LED贴片,将LED灯珠固定到柔性电路板上;
B)焊接电源引线:将各分支电路的电源输入导线和电源输出导线焊接至LED柔性印制电路板的对应焊盘上。
进一步,第4)步骤挤塑成型灯条外皮步骤中,芯条和薄膜条通过整直架进行整直步骤。
进一步,在第4)步骤挤塑成型灯条外皮后,进行灯体表面印刷或烙印文字图案的步骤。
进一步,第1)步骤中挤塑成型的温度设置为165℃~175℃。
进一步,第4)步骤中挤塑成型的温度设置为165℃~175℃。
进一步,所述标注裁剪标记的方式为:在各相邻的分支电路连接处冲裁出三角形孔。
进一步,第1)、4)中的冷却液为水。
采用本发明的生产方法,芯条横截面形状能够根据设计需要,制作成多种多样的风格;同样,外皮的横截面形状也可以根据设计需要制作成多种多样,并且通过多色挤塑成型,外皮的材料及颜色搭配也可以多种组合,例如外皮中掺入彩色的装饰条、将外皮的部分区域做成不透光层等等;以挤塑成型的方式将薄膜条与芯条(已按照LED灯珠和电源引线)包裹,使得其贴合间隙小(塑胶料可以填充两者间的间隙),贴合稳定牢固,使用中不会因弯折、拉扯而导致薄膜条移动、错位等,进而影响装饰效果。整个生产过程,人工介入少,自动化程度高,能大大提高生产效率,提升产品稳定性,增加产品品质可控性。
附图说明
以下结合附图对本发明做出进一步的解释说明,其中:
图1为可通过本发明的生产方法生产出来的LED柔性灯带;
图2为本发明的生产方法的方框图;
图3为挤塑成型芯条的生产过程示意图;
图4为芯条的优选实施例结构示意图;
图5为开灯珠孔和标注裁剪标记的生产过程示意图;
图6为完成开灯珠孔和标注裁剪标记的芯条的结构示意图;
图7为LED柔性电路板的结构示意图;
图8和图9为LED柔性电路板装入芯条后正面和背面视角的结构示意图;
图10为挤塑成型外皮即扩散条的生产过程示意图;
图11为本发明的生产方法生产出的LED柔性灯带***图。
具体实施方式
参照图2,一种LED柔性灯带的生产方法,包括以下步骤:
1)挤塑成型芯条1:如图3所示,将芯线10自卷轴送入挤塑设备11的成型模具内,挤塑设备11中的胶料通过成型模具连续地包覆于芯线10外部,从成型模具内生产出来的芯条1经过冷却槽12中的冷却液进行冷却,充分干燥;为使成型的产品品质和生产效率达到较佳,挤塑成型的温度优选设置为165℃~175℃;考虑到成本及使用方便性,冷却液优选采用水,水冷却效果好、获取便利、能循环利用,成本低廉;经过充分冷却的芯条1通过牵引机13拉动,不断往前移动,被牵引出来的芯条装入存放框14中。可以根据设计需要,生产出横截面多样的芯条,图4所示为优选的一种截面形状。
2)芯条开LED灯珠孔15和标注裁剪标记16:参照图5和图6,将芯条1送入冲压设备20的冲裁模具内,在芯条1上安放LED灯珠的那侧冲裁出灯珠孔15,灯珠孔15大小和间距与所安放的LED灯珠尺寸及灯珠在柔性电路板上的间距相应;按照预定的分支电路的LED灯珠数目,在各相邻的分支电路连接处标注裁剪标记16;作为优选方案,标注裁剪标记的方式为:在各相邻的分支电路连接处冲裁出三角形孔;这样的方式很方便通过在冲压设备上设置专门的冲压工位来实现,不需要额外工作步骤,以免导致增加工时和成本。
3)LED柔性电路板17装入芯条1中:参照图7至图9,将LED柔性电路板17装入芯条1中,LED灯珠均装配进入灯珠孔15中,随后将LED柔性电路板17上各分支电路的电源引线18与芯条1中的芯线10电导通连接;为便于提高自动化程度和生产效率,在LED柔性电路板17装进芯条内之前,先进行LED贴片,将LED灯珠固定到柔性电路板17上;然后焊接电源引线18即将各分支电路的电源输入导线和电源输出导线焊接至LED柔性印制电路板的对应焊盘上。这样可以保证本步骤的连贯、高效性;组合连接好的产品如图9所示。
4)挤塑成型灯条外皮3即扩散条:参照图10,将第3)得到的芯条1送入多色挤塑设备41的模具中,同时也将薄膜条2送入多色挤塑设备41的模具中,薄膜条2覆盖在芯条1上靠近LED灯珠的发光面的那一侧,多色挤塑设备41中分装的不同颜色和特性的胶料通过成型模具连续地包覆于芯线外部,从成型模具内生产出来的LED柔性灯带(外层为灯条外皮3)经过冷却槽42中的冷却液进行冷却,充分干燥;采用多色挤塑成型,可以使多种材料较好地融合在一起,带来层次分明的效果却在各层次间没有接缝,所以接合强度好(难从结合面撕开),且结合处不会出现明显的光线折射等影响照明装饰效果的现象。比方可以在一次工艺过程中,将外皮3制成通体透明,也可以将LED发光面对应的那一侧制成透明或者半透明而其余侧面全部不透明,不透明的部分即为挡光层。为提升产品的品质,使挤塑出的外皮3均匀包裹在芯条和薄膜条的***,芯条和薄膜条还通过整直架40进行整直步骤,这样会降低产品的不合格率。为使成型的产品品质和生产效率达到较佳,挤塑成型的温度优选设置为165℃~175℃;考虑到成本及使用方便性,冷却液优选采用水,水冷却效果好、获取便利、能循环利用,成本低廉;经过充分冷却的LED柔性灯带通过牵引机43拉动,不断往前移动,被牵引出来的柔性灯带装入存放框44中。可以根据设计需要,生产出横截面多样的外皮3即扩散条,图11所示为优选的一种外皮截面形状的结构示意图。
为了让产品传递更多的产品信息如使用注意事项、产品安全证书以及生产商信息如商标、LOGO等等,挤塑成型灯条外皮后,还包括在灯体表面印刷或烙印文字图案的步骤,可以使一些必要的安全标识永久附着在产品上,随时提醒使用者,另外有时还使产品看起来品质感更高。
采用本发明的生产方法,整个生产过程,人工介入少,自动化程度高,能大大提高生产效率,提升产品稳定性,增加产品品质可控性。以上仅为本发明的最佳实施例,并不应被视为对本发明的限制,对以上实施例的调整、修改和组合均落入本发明的保护范围之内。

Claims (8)

1.一种LED柔性灯带的生产方法,特征在于包括以下步骤:
1)挤塑成型芯条:将芯线自卷轴送入挤塑设备的成型模具内,挤塑设备中的胶料通过成型模具连续地包覆于所述芯线外部,从成型模具内生产出来的芯条浸入冷却液中冷却,充分干燥;
2)芯条开LED灯珠孔和标注裁剪标记:将芯条送入冲压设备的冲裁模具内,在芯条上安放LED灯珠的侧面冲裁出灯珠孔,灯珠孔大小和间距与所安放的LED灯珠尺寸及灯珠在柔性电路板上的间距相应;按照预定的分支电路的LED灯珠数目,在各相邻的分支电路连接处标注裁剪标记;
3)LED柔性电路板装入芯条:将LED柔性电路板装入芯条中,LED灯珠均进入所述灯珠孔中,随后将LED柔性电路板上各分支电路的电源引线与芯条中的芯线电导通连接;
4)挤塑成型灯条外皮即扩散条:将第3)得到的芯条送入多色挤塑设备的模具中,同时也将薄膜条送入多色挤塑设备的模具中,薄膜条覆盖在LED灯珠的发光面的一侧,多色挤塑设备中分装的不同颜色和特性的胶料通过成型模具连续地包覆于芯线外部,从成型模具内生产出来的LED柔性灯带浸入冷却液中冷却,充分干燥。
2.根据权利要求1所述的LED柔性灯带的生产方法,特征在于在第3)步骤LED柔性电路板装入芯条前,进行以下步骤:
A)LED贴片,将LED灯珠固定到柔性电路板上;
B)焊接电源引线:将各分支电路的电源输入导线和电源输出导线焊接至LED柔性印制电路板的对应焊盘上。
3.根据权利要求1所述的LED柔性灯带的生产方法,特征在于在第4)步骤挤塑成型灯条外皮步骤中,芯条和薄膜条还通过整直架进行整直步骤。
4.根据权利要求1所述的LED柔性灯带的生产方法,特征在于在第4)步骤挤塑成型灯条外皮后,进行灯体表面印刷或烙印文字图案的步骤。
5.根据权利要求1所述的LED柔性灯带的生产方法,特征在于第1)步骤中挤塑成型的温度设置为165℃~175℃。
6.根据权利要求1所述的LED柔性灯带的生产方法,特征在于第4)步骤中多色挤塑成型的温度设置为165℃~175℃。
7.根据权利要求1所述的LED柔性灯带的生产方法,特征在于第2)步骤中标注裁剪标记的方式为:在各相邻的分支电路连接处冲裁出三角形孔。
8.根据权利要求1所述的LED柔性灯带的生产方法,特征在于第1)、4)步骤中的冷却液为水。
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