CN108136689A - 热铆接方法、热铆接装置、以及被铆接件 - Google Patents

热铆接方法、热铆接装置、以及被铆接件 Download PDF

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Publication number
CN108136689A
CN108136689A CN201680053879.3A CN201680053879A CN108136689A CN 108136689 A CN108136689 A CN 108136689A CN 201680053879 A CN201680053879 A CN 201680053879A CN 108136689 A CN108136689 A CN 108136689A
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China
Prior art keywords
component
peripheral surface
hollow portion
inner peripheral
protrusion
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CN201680053879.3A
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CN108136689B (zh
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鹤贝嘉则
石川宽
赤堀重人
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/60—Riveting or staking
    • B29C65/606—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/224—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip being a resistive ribbon, a resistive band or a resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/226—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip characterised by the cross-section of said heated wire, resistive ribbon, resistive band or resistive strip, e.g. being triangular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/228—Heated wire resistive ribbon, resistive band or resistive strip characterised by the means for electrically connecting the ends of said heated wire, resistive ribbon, resistive band or resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
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    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
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    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/545—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles one hollow-preform being placed inside the other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
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    • B29C66/80—General aspects of machine operations or constructions and parts thereof
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    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
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    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
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Abstract

提供一种进行热铆接的热铆接方法、热铆接装置、以及由这些方法、装置得到的被铆接件，该热铆接能够使第二部件的多个部分一起与第一部件的相对于铅直方向倾斜的部分接合，并能够稳定地通过接合得到高结合强度。热铆接方法使第二部件(30)的嵌入到第一部件(10)的多个孔(132)中并向内周面侧突出的多个凸起(33)一起熔融而与第一部件(10)接合，其中第一部件(10)具有大致锥体形状的中空部(11)，多个孔(132)设置于中空部(11)的内周面，使用具有沿着内周面且在中空部(11)的周向上连续的形状的加热端头(51)，使多个凸起(33)一起熔融，以熔融的相邻的凸起(33)彼此连结的状态与第一部件(10)接合。

Description

热铆接方法、热铆接装置、以及被铆接件
技术领域
本发明涉及使多个凸起一起熔融来进行热铆接的热铆接方法、热铆接装置、以及由这些方法、装置得到的被铆接件。
背景技术
一直以来，公知如下的热铆接方法：使要热铆接的第一部件倾斜，使熔接端头能够接近第一部件的要进行热铆接的部分，来进行热铆接(例如专利文献1)。此外，一直以来公知具有两个熔融端头的热铆接装置(例如专利文献2)。两个熔融端头被分别向多个熔接凸起按压，由此多个熔接凸起熔融。此外，一直以来公知一种具有前端面的加热端头，该前端面具有能够熔接多个位置的大接触面积(例如专利文献3)。
现有技术文献
专利文献
专利文献1：日本登录实用新型第3161142号公报
专利文献2：日本特许第3899355号公报
专利文献3：日本特开2007-307812号公报
发明内容
发明要解决的课题
在上述专利文献1所记载的热铆接方法中，当熔接端头倾斜地对树脂制的熔接凸起进行作用时，构成熔接凸起的树脂的熔融变得不均匀，熔接强度容易发生波动。因此，在该公报中，记载了使用曲柄形状的端头来进行热铆接的技术。
此外，在上述专利文献2所记载的热铆接装置中，温度和熔融状态根据利用熔融端头熔融的位置的不同而不同，难以均匀地管理整体。此外，在上述专利文献3所记载的端头中，由于利用加热端头熔融而产生的熔融部扩大，难以通过熔接得到稳定的结合强度。
因此，在第二部件的相对于第一部件熔接的部分存在多个的情况下，难以使第二部件的多个部分一起均匀地与第一部件的倾斜部分熔接而得到高熔接强度。
本发明的目的在于提供一种进行热铆接的热铆接方法、热铆接装置、以及由这些方法、装置得到的被铆接件，该热铆接能够使第二部件的多个部分一起与第一部件的相对于铅直方向倾斜的部分熔接，并能够稳定地通过熔接得到高结合强度。
用于解决课题的手段
为了达到上述目的，本发明提供一种热铆接方法，使第二部件(例如后述的叶片部件30)的嵌入到第一部件(例如后述的主板10)的多个孔(例如后述的接合孔132)中并向内周面侧突出的多个凸起(例如后述的凸起33)一起熔融而与所述第一部件接合，其中所述第一部件具有大致锥体形状的中空部(例如后述的中空部11)，所述多个孔设置于所述中空部的内周面，使用具有沿着所述内周面且在所述中空部的周向上连续的形状的加热端头(例如后述的加热端头51)，使所述多个凸起一起熔融，以熔融后的相邻的所述凸起彼此连结的状态与所述第一部件接合。
根据本发明，通过由连续形状的连续面构成的加热端头的外周面，能够使从相对于铅直方向倾斜的内周面突出的多个凸起中的相邻的凸起熔融并连结。因此，能够提高接合的强度，能够防止具有凸起的第二部件从孔脱落。此外，能够使多个凸起以均匀的温度、均匀的按压力一起熔融，因此能够使接合的强度均匀。
此外，本发明提供一种热铆接装置(例如后述的热铆接装置50)，该热铆接装置使第二部件(例如后述的叶片部件30)的嵌入到第一部件(例如后述的主板10)的多个孔(例如后述的接合孔132)中并向内周面侧突出的多个凸起(例如后述的凸起33)一起熔融而与所述第一部件接合，其中所述第一部件具有大致锥体形状的中空部(例如后述的中空部11)，所述多个孔设置于所述中空部的内周面，所述热铆接装置的特征在于，其具备加热端头(例如后述的加热端头51)，该加热端头具有沿着所述内周面且在所述中空部的周向上连续的形状。
根据本发明，由于加热端头外周面由连续形状的连续面构成，能够使从相对于铅直方向倾斜的内周面突出的多个凸起中的相邻的凸起熔融并连结。因此，能够提高接合的强度，能够防止具有凸起的第二部件从孔脱落。此外，能够使多个凸起以均匀的温度、均匀的按压力一起熔融，因此能够使接合的强度均匀。
此外，由于加热端头具有在中空部的圆周方向上连续的形状，在配置于大致圆锥形状的中空部的内周面那样的斜面上的多个凸起中，能够使施加于凸起的熔融点的按压力均匀，能够可靠地按压多个凸起。其结果是能够同时对配置于斜面的多个凸起进行热铆接。
并且，在所述加热端头的上端部，在所述加热端头的上端部的周向上连续地形成有凸状的阶差部(例如后述的阶差部517)，所述凸状的阶差部防止所述凸起熔融而构成的熔融部(例如后述的熔融部33A)向所述加热端头的上方流出。
由此，能够抑制凸起熔融而构成的熔融部向加热端头的上方流出，能够将熔融部留在加热端头的加热部的外周面与主板的内周面之间。由此，能够确保用于相邻的凸起彼此连结的充分量的熔融部，从而能够可靠地维持接合的强度。
此外，本发明提供一种被铆接件(例如后述的叶轮1)，所述被铆接件的特征在于，其具备：第一部件(例如后述的主板10)，其具有大致锥体形状的中空部(例如后述的中空部11)；以及多个凸起，它们是第二部件(例如后述的叶片部件30)的嵌入到所述第一部件的所述中空部的内周面上设置的多个孔(例如后述的接合孔132)中且向内周面侧突出的多个凸起(例如后述的凸起33)，被一起熔融而与所述第一部件接合，所述多个凸起熔融而构成的熔融部(例如后述的熔融部33A)连结起来。
根据本发明，相邻的凸起熔融而构成的熔融部连结起来，因此能够使所有的第二部件对第一部件的接合强度均匀。此外，能够提高第二部件对第一部件的接合强度，能够防止具有凸起的第二部件从孔脱落。
并且，在所述第二部件与所述第一部件接合前的、所述第一部件的中空部的内周面的与所述熔融部的下端部相当的所述第一部件的部分处形成有用于阻挡所述熔融部的分隔壁(例如后述的分隔壁134)。
因此，由于形成第一部件的中空部的内周面为大致圆锥形，熔融的凸起欲向下方流动，但在第一部件的与熔融部的下端相当的部分具有阻挡熔融部的分隔壁，因此熔融部不会流到分隔壁的下方，而停留于分隔壁的部分。于是相邻的凸起连结时具有充分量的熔融部，因而维持了强度。并且，在加热端头被插入到下端的情况下，分隔壁也熔融，因此熔融部的量增加，能够形成强度更高的连结部。此外，在分隔壁向进行热铆接时的第一部件的上方延伸的情况下，当分隔壁熔融时，能够使得熔融的分隔壁不向下方流动，而向凸起熔融而构成的熔融部流动。
并且，所述第一部件由主板(例如后述的主板10)构成，所述第二部件由多个叶片部件(例如后述的叶片部件30)构成，被铆接件是具有所述第一部件和所述第二部件的叶轮(例如后述的叶轮1)。
因此，能够通过热铆接容易地制造在从叶轮的旋转轴心方向观察叶轮的情况下叶片部件重叠配置的叶轮。
发明效果
根据本发明，能够提供进行热铆接的热铆接方法、热铆接装置、以及由这些方法、装置得到的被铆接件，该热铆接能够使第二部件的多个部分一起与第一部件的相对于铅直方向倾斜的部分接合，并能够稳定地通过接合得到高结合强度。
附图说明
图1是示出作为本发明的第一实施方式的被铆接件的叶轮1的俯视图。
图2是示出作为本发明的第一实施方式的被铆接件的叶轮1的侧视图。
图3是示出作为本发明的第一实施方式的被铆接件的叶轮1的下方立体图。
图4是示出通过本发明的第一实施方式的热铆接方法进行热铆接前的未铆接件1A的下方立体图。
图5是示出本发明的第一实施方式的未铆接件1A被组装前的状态的俯视图。
图6是示出本发明的第一实施方式的热铆接装置50的立体图。
图7是示出本发明的第一实施方式的热铆接装置50的加热端头51的立体图。
图8是示出在本发明的第一实施方式的热铆接方法中加热端头51开始熔融凸起33的情形的剖视图。
图9是示出在本发明的第一实施方式的热铆接方法中加热端头51熔融凸起33及分隔壁134后的情形的剖视图。
图10是示出本发明的第二实施方式的热铆接装置的加热端头51B的立体图。
具体实施方式
对于本发明的第一实施方式，参照附图详细地进行说明。首先，对被铆接件进行说明。
图1是示出作为本发明的第一实施方式的被铆接件的叶轮1的俯视图。图2是示出作为本发明的第一实施方式的被铆接件的叶轮1的侧视图。图3是示出作为本发明的第一实施方式的被铆接件的叶轮1的下方立体图。图4是示出通过本发明的第一实施方式的热铆接方法进行热铆接前的未铆接件1A的下方立体图。图5是示出本发明的第一实施方式的未铆接件1A被组装前的状态的俯视图。
在以下的说明中，为了便于说明，对于作为后述的被铆接件的叶轮1、以及未铆接件1A，如图2所示，将侧视图中从具有等腰梯形形状的主板10的下底朝向上底的方向(图2中的上方向)定义成上方向，将其相反的方向定义成下方向。此外，对于后述的加热端头51，与叶轮1相反地，将在侧视图中从具有等腰梯形形状的主板10的上底朝向下底的方向(图7中的上方向)定义成上方向，将其相反的方向定义成下方向。
如图1所示，被铆接件具体而言是在风扇等中用于送风的叶轮1。叶轮1具有分别由聚丙烯(PP)构成的树脂制的第一部件和第二部件。如图2所示，第一部件具有外形具有截头圆锥形状的主板10。主板10的内部是中空的，因此主板10具有大致圆锥形状的中空部11(参照图3)。主板10的上端部被上板12封闭，在上板12形成有安装孔121，安装孔121由供从驱动源延伸的旋转轴插入的贯通孔构成。
在主板10的侧板13形成有多个接合孔132。如图5等所示，接合孔132从主板10的轴向上的主板10的侧板13的大致中央位置向主板10的侧板13的下方，在主板10的侧板13的周向上倾斜地延伸至主板10的侧板13的下端部附近。接合孔132的上部由贯通孔构成。接合孔132的下部由从侧板13的外周面凹陷的槽构成，侧板13在该部分处未贯通。由于接合孔132的上部由贯通孔构成，在中空部11的内周面、即形成中空部11的主板10的内周面，也与主板10的外周面同样地开口设置有接合孔132。接合孔132在主板10的侧板13的周向上等间隔地具有14个。
如图3等所示，在主板10的上板12的内表面具有中央凸部123。中央凸部123具有圆柱形状，具有与具有圆盘形状的上板12(参照图2等)同轴的位置关系，从上板12的内表面向下方延伸，并通过与上板12一体成型而连接。安装孔121贯通中央凸部123及上板12。
如图4所示，在进行热铆接前的状态的主板10的侧板13的内周面上，在与后述的凸起33通过热铆接熔融而构成的熔融部33A(参照图3)的下端部(中空部11的内周面的熔融部33A的下端部)相当的位置上形成有分隔壁134。分隔壁134具有圆筒形状，具有与中央凸部123同轴的位置关系，通过与侧板13一体成型而连接。分隔壁134的外径及内径比中央凸部123的外径大，分隔壁134以包围中央凸部123的方式配置。
分隔壁134具有如下程度的高度：在后述的热铆接中，当加热端头51与凸起33抵接时，分隔壁134尚未与加热端头51抵接，且熔融部33A不会从分隔壁134与主板10的侧板13之间溢出。分隔壁134阻挡由通过热铆接熔融的凸起33构成的熔融部33A，使其不流到分隔壁134的下方。
如图4、图8所示，主板10的侧板13具有内周扩径部135。内周扩径部135由侧板13中的侧板13的内周面形成得薄的部分构成，如图8所示，在上下方向上，从侧板13的连接有分隔壁134的部分与分隔壁134的下端(图8所示的分隔壁134的上端)之间的侧板13的部分延伸至主板10的下端部(图8所示的主板10的上端部)。侧板13的内径在内周扩径部135的上端(图8所示的内周扩径部135的下端部)处直径增大，使得产生一段阶差。由此在后述的热铆接时，在内周扩径部135的内周面与后述的加热端头51的外周面之间确保了规定的间隙，能够保持规定量的由熔融的凸起33构成的熔融部33A。
此外，如图4等所示，在进行热铆接前的状态的侧板13的内周面上，在侧板13的周向上的接合孔132的附近形成有调整凸部136。调整凸部136相对于接合孔132一一对应地形成，是为了供给叶片部件30与主板10的接合所必需的量的树脂而设置的。通过热铆接熔融，与熔融的凸起33成为一体，从而构成熔融部33A。
如图5所示，第二部件具有叶片部件30。叶片部件30具有骨部31、叶片主体部32、凸起33。骨部31具有与接合孔132大致一致的形状，与接合孔132一一对应地嵌合。即，具有骨部31的叶片部件30设置有与接合孔132数量相同的14个。骨部31的下端部通过与主板10的侧板13的下端部即形成接合孔132的下端部的部分一体成型而连接。因此，如图5所示，从骨部31未与接合孔132嵌合的状态，使叶片部件30以叶片部件30的与主板10的下端部连接的连接部301为中心转动(以连接部301为中心弯曲)，如图4所示，骨部31与接合孔132嵌合。
叶片主体部32具有从整个骨部31延伸的弯曲的板状。从主板10的轴向观察时，如图1等所示，叶片主体部32被配置成相邻配置的叶片部件30的叶片主体部32重叠。凸起33具有大致三角形状的板状。具有大致三角形状的凸起33的整个底边与骨部31的上部一体成型而连接。如图4所示，当骨部31与接合孔132嵌合时，凸起33被嵌入接合孔132，从形成中空部11的主板10的侧板13的内周面向中空部11的内侧突出。如图3所示，多个叶片部件30的凸起33通过进行热铆接而一起熔融，成为熔融部33A，与相邻的叶片部件30的凸起33一体地连结，并且与主板10接合。具有以上结构的叶轮1构成所谓的斜流风扇。
接下来，对热铆接装置50进行说明。
图6是示出本发明的第一实施方式的热铆接装置50的立体图。图7是示出本发明的第一实施方式的热铆接装置50的加热端头51的立体图。
如图6所示，热铆接装置50具有加热端头51、加热端头驱动部52、保持台53。如图7所示，加热端头51具有加热部511和电极部512。加热部511的外形具有使截头大致圆锥形状上下颠倒而成的形状，加热部511的上端部及下端部形成有开口。占据加热端头51的大部分的加热部511具有沿着形成中空部11的主板10的侧板13的内周面且在中空部11的圆周方向上连续的形状。此处，实际上由于形成有后述的槽隙514、515，加热部511并不具有完全连续的形状，但由于槽隙的宽度极小，此处实质上意味着“连续”。此外，还能够用绝缘材料等填充槽隙，形成连续面来使用。加热部511由钢铁材料构成。
在加热部511形成有连通加热部511的外周面与内周面的槽隙514、515。槽隙514、515在加热部511的周向上将加热部511分割为多个。更详细而言，槽隙515并不是完全分割加热部511，而是形成为留下了加热部511的上端部或下端部。因此，以下将由槽隙515划分出的加热部511的各个部分称作大致分割片。
即，形成有多个槽隙，但其中的一个槽隙514从加热部511的上端部形成至加热部511的下端部，由这一个槽隙514分断加热部511。但是，其他槽隙515均未从加热部511的上端部形成至加热部511的下端部，与这一个槽隙514相邻的其他槽隙515留下加热部511的下端部地形成至加热部511的上端部。因此，在加热部511的形成有其他槽隙515的部分，在加热部511的下端部，加热部511未被分断而是连接的。与其他槽隙515相邻的别的其他槽隙515留下加热部511的上端部地形成至加热部511的下端部。因此，在加热部511的形成有别的其他槽隙515的部分，在加热部511的上端部，加热部511未被分断而是连接的。由此，彼此交错地形成了槽隙515，由此加热部511从以一个槽隙514为边界的加热部511的一侧向另一侧，以在上下方向上呈之字形地沿加热部511的周向环绕一周的方式被电连接。
在加热部511的外周面的上端部形成有凸状的阶差部517。阶差部517从加热部511的外周面的上端部向加热部511的半径方向外侧突出，并且形成为以沿加热部511的外周面的上端部的周向环绕一周的方式连续延伸。此处，实际上由于形成有槽隙514、515，阶差部517并非完全连续地形成，但由于槽隙的宽度极小，此处实际上意味着“连续”。阶差部517防止由通过热铆接熔融的凸起33构成的熔融部33A流出到比加热端头51的上端部靠加热端头51的上方的位置。
电极部512具有大致长方形状的板状。电极部512的下端部通过与相邻于一个槽隙514的两个大致分割片中的各个大致分割片一体成型而连接。电极部512的上端部分别固定于加热端头驱动部52的电力供给支持部521的正极、负极，并电连接。根据该结构，从加热端头驱动部52的电力供给支持部521通过电极部512向加热部511供电。由于加热部511具有电阻，通过向加热部511供电，整个加热部511大致均匀地发热。此外，加热端头驱动部52以能够向上下方向移动电力供给支持部521的方式构成，通过加热端头驱动部52向上下方向驱动电力供给支持部521，能够向图5的上下方向移动加热端头51。
保持台53具有基台531和位于基台531的上部的圆筒状部532。圆筒状部532具有叶片主体部嵌合凹部534。叶片主体部嵌合凹部534具有与叶轮1的叶片主体部32的上部(图6所示的叶片主体部32的下部)的形状大致相同的形状，并向下方凹陷地形成。因此，进行热铆接前的、骨部31嵌合于主板10的接合孔132中的状态的叶片部件30的叶片主体部32能够以主板10的旋转轴心方向与铅直方向一致的位置关系嵌合于叶片主体部嵌合凹部534。通过该嵌合，保持台53将进行热铆接前的、骨部31嵌合于接合孔132中的状态的主板10及叶片部件30(以下称作“未铆接件1A”)以上下颠倒的状态稳定地固定并保持。
接下来，对热铆接方法进行说明。
图8是示出在本发明的第一实施方式的热铆接方法中加热端头51开始熔融凸起33的情形的剖视图。图9是示出在本发明的第一实施方式的热铆接方法中加热端头51熔融凸起33及分隔壁134后的情形的剖视图。
在热铆接方法中，首先，使未铆接件1A的主板10的旋转轴心方向具有与铅直方向一致的位置关系，使未铆接件1A的叶片部件30的叶片主体部32与叶片主体部嵌合凹部534嵌合。由此，如图5所示，由保持台53保持未铆接件1A。接下来，通过使加热端头驱动部52驱动来使加热端头51下降，向主板10的中空部11插入加热端头51。
然后，如图8所示，通过使加热端头51的加热部511与多个凸起33一起抵接，使调整凸部136熔融，并且使多个凸起33一起熔融，从而形成熔融部33A。此时，熔融部33A向下方流动，但被尚未与加热端头51的加热部511抵接而未熔融的分隔壁134阻止流到分隔壁134的下方，从而滞留在分隔壁134与主板10的侧板13之间。由此，熔融部33A的树脂量维持在规定的量。
然后，进一步使加热端头51下降而与分隔壁134抵接，使加热端头51的下降停止，从而使分隔壁134熔融。分隔壁134以从主板10的旋转轴心向半径方向外侧离开的方式变形、熔融。熔融的分隔壁134与熔融部33A成为一体，熔融部33A的树脂量进一步增加。分隔壁134充分熔融后，按压熔融部33A，使加热端头51的下端部的端缘与中央凸部123的内表面高度相同。由此，分隔壁134与熔融部33A一体化，熔融部33A彼此连结，主要配置在内周扩径部135。然后，通过使加热端头51的温度降低，使熔融部33A硬化。构成熔融部33A的多个叶片部件30的凸起33在熔融并一体化后硬化，成为连结的状态，从而与主板10接合。
根据本实施方式，起到以下的效果。
在本实施方式中，在热铆接方法中，使作为第二部件的叶片部件30的嵌入到作为第一部件的主板10的多个孔(接合孔132)中并向内周面侧突出的多个凸起33一起熔融而与作为第一部件的主板10接合，其中作为第一部件的主板10具有大致圆锥形状的中空部11，多个孔(接合孔132)设置于中空部11的内周面。并且，在热铆接方法中，使用具有沿着内周面且在中空部11的圆周方向上连续的形状的加热端头51，使多个凸起33一起熔融，以熔融的相邻的凸起33彼此连结的状态与第一部件接合。
由此，通过加热端头51的由连续面构成的外周面，能够使从内周面(形成主板10的中空部11的内周面)突出的多个凸起33中的相邻的凸起33熔融并连结，所述内周面相对于具有与铅直方向一致的位置关系的作为第一部件的主板10的轴心倾斜。因此，能够提高接合的强度，能够防止具有凸起33的叶片部件30从接合孔132脱落。此外，能够使多个凸起33以均匀的温度、均匀的按压力一起熔融，因此能够使接合的强度均匀。
此外，在本实施方式中，在热铆接装置50中，使多个作为第二部件的叶片部件30的嵌入作为第一部件的主板10的多个孔(接合孔132)中并向内周面侧突出的凸起33一起熔融而与作为第一部件的主板10接合，其中作为第一部件的主板10具有大致圆锥形状的中空部11，多个孔(接合孔132)设置于中空部11的内周面。并且，热铆接装置50具备加热端头51，加热端头51具有沿着内周面且在中空部11的圆周方向上连续的形状。
由此，由于加热端头51的外周面由连续面构成，能够使从内周面(形成主板10的中空部11的内周面)突出的多个凸起33中的相邻的凸起33熔融并连结，所述内周面相对于具有与铅直方向一致的位置关系的作为第一部件的主板10的轴心倾斜。因此，能够提高接合的强度，能够防止具有凸起33的叶片部件30从接合孔132脱落。此外，能够使多个凸起33以均匀的温度、均匀的按压力一起熔融，因此能够使接合的强度均匀。
此外，由于加热端头51具有在中空部11的圆周方向上连续的形状，在配置于大致圆锥形状的中空部11的内周面那样的斜面上的多个凸起33中，能够使施加于凸起33的熔融点的按压力均匀，能够可靠地按压多个凸起33。其结果是能够同时对配置于斜面的多个凸起33进行热铆接。
并且，在加热端头51的上端部，在加热端头51的上端部的周向上连续地形成有凸状的阶差部517，凸状的阶差部517防止凸起33熔融而构成的熔融部33A向加热端头51的上方流出。
由此，能够抑制凸起33熔融而构成的熔融部33A向加热端头51的上方流出，能够将熔融部33A留在加热端头51的加热部511的外周面与主板10的内周面之间。由此，能够确保由用于相邻的凸起33彼此连结的充分量的树脂构成的熔融部33A，即能够确保具有大致圆锥形状的中空部11的轴向上的高度、及中空部11的半径方向上的厚度的熔融部33A，从而能够可靠地维持接合的强度。
此外，在本实施方式中，被铆接件具备：第一部件，其具有大致圆锥形状的中空部11；以及多个凸起33，它们是多个第二部件的嵌入到第一部件的中空部11的内周面上设置的多个孔(接合孔132)中且向内周面侧突出的凸起33，被一起熔融而与第一部件接合。多个凸起33熔融而构成的熔融部33A连结起来。
由此，相邻的凸起33熔融而构成的熔融部33A连结起来，因此能够使所有的叶片部件30对主板10的接合强度均匀。此外，能够提高叶片部件30对主板10的接合强度，能够防止具有凸起33的叶片部件30从接合孔132脱落。
并且，在作为第二部件的叶片部件30的凸起33与作为第一部件的主板10接合前的、作为第一部件的主板10的中空部11的内周面的与熔融部33A的下端部相当的作为第一部件的主板10的部分，形成有用于阻挡熔融部33A的分隔壁134。
由此，由于主板10为大致圆锥形，凸起33熔融而构成的熔融部33A即树脂欲流向下方，但在熔融部33A的下端具有阻挡树脂流动的分隔壁134，因此树脂不会流到分隔壁134的下方，而留在熔融部33A。因此，相邻的熔融部33A连结时具有足够量的熔融部33A，因此维持了强度。并且，在加热端头51被插入到下端时，分隔壁134也熔融，因此熔融部33A的量(树脂量)增加，能够形成强度更高的连结部(熔融部33A)。此外，分隔壁134从主板10的上板12附近的侧板13的部分向下方延伸(从进行热铆接时配置在未铆接件1A的下侧的部分向上方延伸)，因此当分隔壁134熔融时，能够使得熔融的分隔壁134不向上板12流动，而向凸起33熔融而构成的熔融部33A流动。
并且，第一部件由主板10构成。第二部件由多个叶片部件30构成。被铆接件是具有第一部件和第二部件的叶轮1。由此，能够通过热铆接容易地制造具有在从叶轮1的旋转轴心方向观察叶轮1的情况下叶片主体部32重叠配置的叶片部件30的叶轮1。
接下来，参照附图对本发明的第二实施方式详细地进行说明。
以下，对与上述第一实施方式相同的结构标注相同的标号，并省略其详细的说明。本实施方式的热铆接装置在加热端头51B的形状不同这一点上与第一实施方式不同。
图10是示出本发明的第二实施方式的热铆接装置的加热端头51B的立体图。
加热端头51B具有加热部511B和电极部512B。如图10所示，加热部511B的外形与第一实施方式中的加热部511同样，具有使截头大致圆锥形状上下颠倒而成的形状，加热部511B的上端部及下端部形成有开口。
根据本实施方式，起到以下的效果。
在本实施方式中未形成槽隙。而代之以，使端头的厚度部分地变化，调整端子安装位置，来取得热量均衡。由此，能够形成制造容易的加热端头51B，从而能够形成容易制造的热铆接装置。
本发明不限于上述实施方式，在能够达到本发明目的的范围内的变形、改良等包含于本发明。
例如热铆接装置的各部分结构不限于本实施方式中的热铆接装置50的各部分结构。例如加热端头的形状不限于本实施方式中的加热端头51的形状。同样对于被铆接件或未铆接件的各部分的形状、结构，也不限于本实施方式中的作为被铆接件的叶轮1、未铆接件1A的各部分的形状。例如阶差部、凸起、分隔壁等的形状不限于本实施方式中的阶差部517、凸起33、分隔壁134等的形状。
此外，通过使用热铆接装置50实施的热铆接方法制造的作为被铆接件的叶轮1在风扇等中用于送风，构成所谓的斜流风扇，但不限于此。例如被铆接件可以是离心式且叶片部件向前配置的所谓西洛可风扇、或叶片部件向后配置的所谓涡轮风扇。
此外，主板10具有大致圆锥形状，但不限于此。只要是大致锥体形状即可，例如也可以是大致三棱锥形状等。
标号说明
1：叶轮；
10：主板(第一部件)；
11：中空部；
30：叶片部件(第二部件)；
33：凸起；
33A：熔融部；
51：加热端头；
132：接合孔(孔)；
134：分隔壁；
517：阶差部。

Claims (6)

1.一种热铆接方法，使第二部件的嵌入到第一部件的多个孔中并向内周面侧突出的多个凸起一起熔融而与所述第一部件接合，其中所述第一部件具有大致锥体形状的中空部，所述多个孔设置于所述中空部的内周面，
使用具有沿着所述内周面且在所述中空部的周向上连续的形状的加热端头，使所述多个凸起一起熔融，以熔融后的相邻的所述凸起彼此连结的状态与所述第一部件接合。
2.一种热铆接装置，该热铆接装置使第二部件的嵌入到第一部件的多个孔中并向内周面侧突出的多个凸起一起熔融而与所述第一部件接合，其中所述第一部件具有大致锥体形状的中空部，所述多个孔设置于所述中空部的内周面，
所述热铆接装置的特征在于，其具备加热端头，该加热端头具有沿着所述内周面且在所述中空部的周向上连续的形状。
3.根据权利要求2所述的热铆接装置，其特征在于，
在所述加热端头的上端部，在所述加热端头的上端部的周向上连续地形成有凸状的阶差部，所述凸状的阶差部防止所述凸起熔融而构成的熔融部向所述加热端头的上方流出。
4.一种被铆接件，所述被铆接件的特征在于，其具备：
第一部件，其具有大致锥体形状的中空部；以及
多个凸起，它们是第二部件的嵌入到所述第一部件的所述中空部的内周面上设置的多个孔中且向内周面侧突出的多个凸起，被一起熔融而与所述第一部件接合，
所述多个凸起熔融而构成的熔融部连结起来。
5.根据权利要求4所述的被铆接件，其特征在于，
在所述第二部件与所述第一部件接合前的、所述第一部件的中空部的内周面的与所述熔融部的下端部相当的所述第一部件的部分处形成有用于阻挡所述熔融部的分隔壁。
6.根据权利要求4或5所述的被铆接件，其特征在于，
所述第一部件由主板构成，
所述第二部件由多个叶片部件构成，
所述被铆接件是具有所述第一部件和所述第二部件的叶轮。
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