TWI736767B - Resin pipe member, method of manufacturing resin pipe member, resin pipe joint, and resin pipe - Google Patents
Resin pipe member, method of manufacturing resin pipe member, resin pipe joint, and resin pipe Download PDFInfo
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- TWI736767B TWI736767B TW107116802A TW107116802A TWI736767B TW I736767 B TWI736767 B TW I736767B TW 107116802 A TW107116802 A TW 107116802A TW 107116802 A TW107116802 A TW 107116802A TW I736767 B TWI736767 B TW I736767B
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
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Abstract
本發明之樹脂製管構件(1)具有:管本體(2),其於內部形成有供流體流動之內部流路(P);及外筒(3),其於上述管本體(2)之外周側覆蓋該管本體(2)之至少本體端部(2a)之周圍而配置,且固定或固著於上述管本體(2);熔接於其他樹脂製管構件或樹脂製管接頭之端部之外筒端部(3a)係較其內周側之上述本體端部(2a)更向軸線方向(AD)之外側突出而定位,且設置有由外筒端部(3a)之內面與本體端部(2a)之內面而形成之內面階差(4)。 The resin pipe member (1) of the present invention has: a pipe body (2) having an internal flow path (P) for fluid to flow inside; The outer peripheral side is arranged to cover at least the body end (2a) of the pipe body (2), and is fixed or fixed to the pipe body (2); welded to the end of other resin pipe members or resin pipe joints The outer cylinder end (3a) is positioned to protrude to the outer side of the axial direction (AD) than the above-mentioned body end (2a) on the inner peripheral side, and is provided with the inner surface of the outer cylinder end (3a) and The inner surface step (4) formed by the inner surface of the body end (2a).
Description
本發明係關於一種於內部形成有供流體流動之內部流路,且藉由端部之熔接而與樹脂製管接頭或其他樹脂製管構件連結之樹脂製管構件、樹脂製管構件之製造方法、樹脂製管接頭及樹脂製配管,尤其提出一種技術,可有效地抑制於將樹脂製管構件與樹脂製管接頭或其他樹脂製管構件於端部熔接時可能產生之所謂內凸起。 The present invention relates to a method for manufacturing a resin pipe member and a resin pipe member in which an internal flow path for fluid flow is formed and the ends are welded to connect with a resin pipe joint or other resin pipe members , Resin pipe joints and resin piping, in particular, proposes a technology that can effectively suppress the so-called internal protrusion that may occur when the resin pipe member is welded to the resin pipe joint or other resin pipe members at the end.
各種產業中所使用之藥液輸送線等樹脂製配管有時藉由如下而製造,即,使用熔接機,藉由將由熱塑性樹脂等所構成之樹脂製管接頭或樹脂製管構件之各端部相互對接地熔接而製造。 Resin pipes such as chemical liquid delivery lines used in various industries are sometimes manufactured by using a welding machine to connect each end of a resin pipe joint or a resin pipe member made of thermoplastic resin, etc. Manufactured by welding each other to the ground.
若詳細說明此種樹脂製配管之製造方法之一例,則例如於熔接機之成對之夾具之各者,使兩個樹脂製管構件或樹脂製管接頭之各者以其等之端部相互對向之姿勢保持。繼而,藉由加熱器等對保持於各夾具之兩個樹脂製管構件等之各者之端部進行加熱,藉此使其等之端部熔融,於該狀態下,使兩個樹脂製管構件等相互接近,使該端部藉由所需要之壓力之作用對接地熔接。藉由將此種樹脂製管構件等之端部彼此之熔接重複進行而將樹脂製管構件等連結,可製造特定形狀之配管。 To explain in detail an example of the manufacturing method of such a resin pipe, for example, in each of the paired clamps of the welding machine, the two resin pipe members or resin pipe joints are mutually connected with each other. Maintain the facing posture. Then, the ends of the two resin pipe members and the like held in each jig are heated by a heater or the like to melt the ends of the two resin pipes. In this state, the two resin pipes are heated. The components are close to each other, so that the end is welded to the ground by the required pressure. By repeating the welding of the ends of such a resin pipe member and the like to connect the resin pipe member and the like, a pipe of a specific shape can be manufactured.
此處,為了獲得將樹脂製管構件彼此或樹脂製管構件與其他樹脂製管接頭以上述方式連結充分之熔接強度,必須於使端部熔接之前以特定之 較高之溫度加熱,並且於其後使端部彼此對接時作用特定之較大壓力。 Here, in order to obtain sufficient welding strength for connecting resin pipe members or resin pipe members and other resin pipe joints in the above manner, it is necessary to heat the ends at a specific higher temperature before welding the ends. After the ends are butted with each other, a specific greater pressure is applied.
然而,於該情形時,起因於此種加熱及加壓,而於對接時於熔融狀態之端部產生熔融樹脂之流動,因此,存在如下情況,即,樹脂以向較內面更內周側隆起之狀態硬化,於熔接部之內面形成隆起部。該隆起部有時被稱為內凸起。而且,由於形成於配管之熔接部之內面之內凸起使管路內徑局部地變窄,故而有於液體之通流時,於該處產生積液並且導致流量降低之問題。 However, in this case, due to such heating and pressurization, the flow of the molten resin is generated at the end of the molten state during the butting. Therefore, there are cases where the resin moves to the inner peripheral side than the inner surface. The raised state is hardened, and a raised portion is formed on the inner surface of the welded part. This bulge is sometimes referred to as an inner bulge. Moreover, since the inner protrusion formed on the inner surface of the welded portion of the pipe partially narrows the inner diameter of the pipe, there is a problem that liquid accumulates there and reduces the flow rate when the liquid flows.
針對該問題,於專利文獻1中,提出有「合成樹脂製管狀構件彼此之熔接方法」,「係使第1及第2合成樹脂製管狀構件之端部加熱且熔融之後,使端面彼此對接地熔接之方法,且於對接時對兩管狀構件施加內壓」,「於加熱前,對兩管狀構件之對接端部內徑部分進行倒角」。而且,根據該方法,「可使存在於對接部之凸起部內面之凸量變小,藉由將如此獲得之管狀構件使用於配管,而接合部不會阻礙液體之順利之流動,又,亦防止接合部成為積液而延長液體之置換所需要之時間。」 In response to this problem,
[先前技術文獻] [Prior Technical Literature]
[專利文獻] [Patent Literature]
[專利文獻1]日本特開2004-284048號公報 [Patent Document 1] JP 2004-284048 A
於專利文獻1之揭示技術中,由於在將樹脂製管構件等之端部彼此對接地熔接時施加內壓,故而存在如下其他問題,即,需要熔接機及用以施加該內壓之加壓裝置,從而設備成本增加,並且導致由加壓所致之作業時間之增加。尤其,於將多個樹脂製管構件或樹脂製管接頭依次連結而構成配管之情形時,每次使其等之端部彼此熔接時,必須配置加壓裝置,無法否認配管之製 造能率之降低。 In the technique disclosed in
本發明之課題在於解決以往技術所具有之此種問題,其目的在於提供一種可有效地抑制於將樹脂製管構件與樹脂製管接頭或其他樹脂製管構件於端部熔接時可能產生於熔接部之內凸起之樹脂製管構件、樹脂製管構件之製造方法、樹脂製管接頭及樹脂製配管。 The subject of the present invention is to solve such problems in the prior art, and its object is to provide a method that can effectively suppress the possibility of welding a resin pipe member and a resin pipe joint or other resin pipe members from being welded at the end. Resin pipe member that protrudes inside the part, method of manufacturing resin pipe member, resin pipe joint, and resin pipe.
本發明之樹脂製管構件具有:管本體,其於內部形成有供流體流動之內部流路;及外筒,其於上述管本體之外周側覆蓋該管本體之至少本體端部之周圍而配置,且固定或固著於上述管本體;熔接於其他樹脂製管構件或樹脂製管接頭之端部之外筒端部係較其內周側之上述本體端部更向軸線方向之外側突出而定位,且設置有由外筒端部之內面與本體端部之內面而形成之內面階差。 The resin pipe member of the present invention has: a pipe body in which an internal flow path for fluid to flow is formed; and an outer cylinder arranged to cover the periphery of at least the end of the pipe body on the outer circumference of the pipe body , And fixed or fixed to the pipe body; the end of the outer tube fused to other resin pipe members or resin pipe joints protrudes to the outside of the axial direction than the end of the body on the inner circumference side. It is positioned, and is provided with an inner surface level difference formed by the inner surface of the end of the outer cylinder and the inner surface of the end of the body.
於本發明之樹脂製管構件中,較佳為,上述外筒熔接於上述管本體。 In the resin pipe member of the present invention, it is preferable that the outer cylinder is welded to the pipe body.
於該情形時,更佳為,上述外筒藉由嵌入成形而熔接並形成於上述管本體。 In this case, it is more preferable that the outer cylinder is welded and formed on the pipe body by insert molding.
此處,於本發明之樹脂製管構件中,較佳為,上述內面階差之徑向之高度為0.5mm~1.5mm。 Here, in the resin pipe member of the present invention, it is preferable that the height of the inner surface step difference in the radial direction is 0.5 mm to 1.5 mm.
又,此處,於本發明之樹脂製管構件中,較佳為,外筒端部之相對於管本體之本體端部的軸線方向之突出長度為0.2mm~1.0mm。 Furthermore, here, in the resin pipe member of the present invention, it is preferable that the protruding length of the end of the outer cylinder with respect to the axial direction of the end of the pipe body is 0.2 mm to 1.0 mm.
又,於本發明之樹脂製管構件中,較佳為,上述外筒端部之端面具有下述錐形狀,且錐形狀之該端面之傾斜角度相對於與軸線方向正交之平面為5°~10°之範圍內,該錐形狀隨著朝向徑向之內側而逐漸向深處於軸線方向之內側之方向傾斜。 Furthermore, in the resin pipe member of the present invention, it is preferable that the end surface of the end portion of the outer cylinder has the following tapered shape, and the inclination angle of the tapered end surface is 5° with respect to a plane orthogonal to the axial direction Within the range of ~10°, the cone shape gradually slopes toward the inner side of the axis direction as it goes toward the radial inner side.
而且,又,於本發明之樹脂製管構件中,較佳為,上述外筒端部之端面相對於管本體之上述本體端部之端面具有兩倍以上之面積。 Furthermore, in the resin pipe member of the present invention, it is preferable that the end surface of the end of the outer cylinder has an area more than twice that of the end surface of the main body end of the pipe body.
本發明之樹脂製管構件之製造方法係製造上述任一個樹脂製管構件之方法,且具有外筒成形步驟,該外筒成形步驟係將管本體之至少本體端部配置於射出成形模具內,並於該射出成形模具內射出樹脂材料,藉此於上述管本體之外周側形成外筒。 The method of manufacturing a resin pipe member of the present invention is a method of manufacturing any of the above-mentioned resin pipe members, and has an outer cylinder forming step in which at least the body end of the pipe body is arranged in an injection molding die, The resin material is injected into the injection mold, thereby forming an outer cylinder on the outer peripheral side of the pipe body.
於本發明之樹脂製管構件之製造方法中,較佳為,進而具有於外筒成形步驟之前,將管本體藉由擠壓成形而形成之本體成形步驟。 In the method for manufacturing a resin pipe member of the present invention, it is preferable to further include a body forming step of forming the tube body by extrusion before the outer cylinder forming step.
本發明之樹脂製管接頭係與上述任一個樹脂製管構件藉由端部之熔接而連結者,且於與上述樹脂製管構件之上述外筒端部熔接之接頭端部,設置有內面階差。 The resin pipe joint of the present invention is connected to any one of the above-mentioned resin pipe members by welding at the end, and the joint end welded to the end of the outer cylinder of the resin pipe member is provided with an inner surface Step difference.
於本發明之樹脂製管接頭中,較佳為,接頭端部之上述內面階差之徑向之高度為0.5mm~1.5mm。 In the resin pipe joint of the present invention, it is preferable that the radial height of the step of the inner surface of the joint end is 0.5 mm to 1.5 mm.
又,於本發明之樹脂製管接頭中,較佳為,上述接頭端部之端面具有下述錐形狀,且錐形狀之該端面之傾斜角度相對於與軸線方向正交之平面為5°~10°之範圍內,該錐形狀隨著朝向徑向之內側而逐漸向深處於軸線方向之內側之方向傾斜。 In addition, in the resin pipe joint of the present invention, it is preferable that the end surface of the end of the joint has the following tapered shape, and the inclination angle of the tapered end surface is 5° to a plane orthogonal to the axial direction. Within the range of 10°, the tapered shape gradually slopes toward the inner side of the axial direction as it goes toward the radial inner side.
本發明之樹脂製配管係具備至少一根上述任一個樹脂製管構件者,且於上述樹脂製管構件與其他樹脂製管構件或樹脂製管接頭之連結部位、及/或上述樹脂製管構件彼此之連結部位之內側,上述內面階差之至少一部分由上述外筒端部之樹脂部分填充,該連結部位具有與上述管本體之內徑相等或大於該內徑之內徑。 The resin piping of the present invention is provided with at least one of any one of the above-mentioned resin pipe members, and is used at the connection site of the above-mentioned resin pipe member and other resin pipe members or resin pipe joints, and/or the above-mentioned resin pipe member At least a part of the inner surface step is filled with the resin part of the end of the outer cylinder on the inner side of the connecting part, and the connecting part has an inner diameter equal to or larger than the inner diameter of the pipe body.
根據本發明,於樹脂製管構件之管本體之外周側配置覆蓋其至 少本體端部之周圍之外筒,使供端部之熔接之該外筒端部較其內周側之上述本體端部更向軸線方向之外側突出而定位,於此處設置內面階差,藉此,若於其他樹脂製管構件或樹脂製管接頭之端部與外筒端部對接地熔接,則於內周側隆起之樹脂部分填充至內面階差之至少一部分,該樹脂部分向內周側之隆起得到抑制,故而可有效地抑制熔接部之內凸起之形成。 According to the present invention, the outer cylinder covering at least the end of the body is arranged on the outer circumference of the pipe body of the resin pipe member, so that the end of the outer cylinder for the welding of the end is higher than the end of the body on the inner circumference. It is positioned to protrude to the outside of the axial direction, and an inner surface level difference is provided here, so that if the end of other resin pipe members or resin pipe joints and the end of the outer cylinder are welded to the ground, the inner circumference The resin part of the side bulge is filled to at least a part of the inner surface level difference, and the bulge of the resin part to the inner peripheral side is suppressed, so the formation of the inner bulge of the welded portion can be effectively suppressed.
1‧‧‧樹脂製管構件 1‧‧‧Resin pipe components
2‧‧‧管本體 2‧‧‧Tube body
2a‧‧‧本體端部 2a‧‧‧End of body
3‧‧‧外筒 3‧‧‧Outer cylinder
3a、33a、43a‧‧‧外筒端部 3a, 33a, 43a‧‧‧Outer cylinder end
3b、33b、43b‧‧‧外筒端部之端面 3b, 33b, 43b‧‧‧The end surface of the end of the outer cylinder
4‧‧‧內面階差 4‧‧‧Inside level difference
34、44‧‧‧外面階差 34、44‧‧‧Outside step difference
5‧‧‧擴徑空間 5‧‧‧Expansion space
46‧‧‧內側凹部 46‧‧‧Inner recess
11‧‧‧樹脂製管接頭 11‧‧‧Resin pipe joint
11a‧‧‧接頭端部 11a‧‧‧Connector end
11b‧‧‧端面 11b‧‧‧end face
12‧‧‧內面階差 12‧‧‧Inside level difference
21‧‧‧樹脂部分 21‧‧‧Resin part
P‧‧‧內部流路 P‧‧‧Internal flow path
AD‧‧‧軸線方向 AD‧‧‧Axis direction
θ‧‧‧錐形狀之端面之傾斜角度 θ‧‧‧The inclination angle of the end surface of the cone shape
Dc‧‧‧外筒之內徑 Dc‧‧‧Inner diameter of outer cylinder
Dt‧‧‧管本體之內徑 Dt‧‧‧Inner diameter of tube body
Hs‧‧‧內面階差之徑向之高度 Hs‧‧‧The radial height of the inner step difference
Lc‧‧‧外筒端部之軸線方向之突出長度 Lc‧‧‧The protruding length of the end of the outer cylinder in the axial direction
Cp‧‧‧連結部位 Cp‧‧‧Connecting part
圖1係表示本發明之一實施形態之樹脂製管構件之主要部分之包含中心軸線之縱剖面圖。 Fig. 1 is a longitudinal cross-sectional view including a central axis of a main part of a resin pipe member according to an embodiment of the present invention.
圖2係圖1之局部放大縱剖面圖。 Fig. 2 is a partial enlarged longitudinal sectional view of Fig. 1.
圖3係將圖1之樹脂製管構件與連結於其之樹脂製管接頭一起表示之縱剖面圖。 Fig. 3 is a longitudinal sectional view showing the resin pipe member of Fig. 1 together with a resin pipe joint connected thereto.
圖4係表示圖3之樹脂製管構件與樹脂製管接頭之連結部位即熔接部之縱剖面圖。 Fig. 4 is a longitudinal cross-sectional view showing a welded part, which is a connection part between the resin pipe member and the resin pipe joint of Fig. 3.
圖5係表示樹脂製管構件之外筒之變形例之縱剖面圖。 Fig. 5 is a longitudinal sectional view showing a modification of the outer tube of the resin pipe member.
圖6係表示樹脂製管構件之外筒之其他變形例之縱剖面圖。 Fig. 6 is a longitudinal sectional view showing another modification of the outer tube of the resin pipe member.
圖7係以端部之熔接前後之狀態表示實施例中之比較例之樹脂製管構件之縱剖面圖。 Fig. 7 is a longitudinal cross-sectional view showing the resin pipe member of the comparative example in the embodiment in the state before and after the welding of the end.
圖8係以端部之熔接前後之狀態表示實施例中之發明例1之樹脂製管構件之縱剖面圖。 Fig. 8 is a longitudinal cross-sectional view showing the resin pipe member of Invention Example 1 in the embodiment in the state before and after welding of the ends.
圖9係以端部之熔接前後之狀態表示實施例中之發明例2之樹脂製管構件之縱剖面圖。 Fig. 9 is a longitudinal sectional view showing the resin pipe member of Invention Example 2 in the embodiment in the state before and after welding of the ends.
以下,一面參照圖式,一面對本發明之實施形態詳細地進行說明。 Hereinafter, the embodiments of the present invention will be described in detail while referring to the drawings.
圖1所例示之樹脂製管構件1係具有:直線或曲線狀之直管或曲管形狀之管本體2,其於內部形成有供藥液等液體或氣體及其他流體流動之內部流路P;及外筒3,其於該管本體2之外周側覆蓋管本體2之至少本體端部2a之周圍而配置,且固定或固著於管本體2,呈圓筒等筒狀。 The
構成樹脂製管構件1之管本體2及外筒3分別係由全氟烷氧基烷烴(PFA)、全氟乙烯丙烯共聚物(FEP)或聚醚醚酮(PEEK)等樹脂材料所構成者,且可使用相互同種或異種之樹脂材料而形成。 The
此處,於該樹脂製管構件1中,如圖2中放大圖所示,使外筒3之外筒端部3a以較配置於其內周側之管本體2之本體端部2a更向軸線方向AD之外側突出之方式定位,藉此,於外筒端部3a之內面與本體端部2a之內面之間,形成有徑向之高度之內面階差4。 Here, in the
更詳細而言,樹脂製管構件1係於軸線方向AD之內側之管本體2存在之部分,具有該管本體2之相對較小之內徑Dt,但於樹脂製管構件1之端部中之較內面階差4更靠軸線方向AD之外側,外筒端部3a較本體端部2a更向軸線方向AD之外側突出且不存在管本體2,具有外筒端部3a之相對較大之內徑Dc。作為其結果,於樹脂製管構件1之端部形成有由內面階差4與外筒端部3a之內面劃分之擴徑空間5。 In more detail, the
為了使用此種樹脂製管構件1製造配管,而重複藉由將樹脂製管構件1與其他樹脂製管構件或樹脂製管接頭於端部熔接而進行之樹脂製管構件彼此之連結及/或樹脂製管構件與樹脂製管接頭之連結。 In order to manufacture piping using this
該端部之熔接具體而言例如可藉由如下方式而進行,即,於未圖示之熔接 機之成對之夾具之各者,以樹脂製管構件1之端部與其他樹脂製管構件或樹脂製管接頭之端部相互對向之姿勢,使其等之樹脂製管構件1等分別保持,然後,以使保持於夾具之樹脂製管構件1等之兩端部藉由加熱器及其他加熱裝置而加熱並熔融之狀態使樹脂製管構件1等相互接近,使其等之端部藉由所需要之壓力之作用而對接。 Specifically, the welding of the end can be performed, for example, by using the end of the
此處,該樹脂製管構件1如圖3所示,於其外筒端部3a,與樹脂製管接頭11之接頭端部11a等熔接而連結。 Here, as shown in FIG. 3, the
根據該情況,於端部之熔接時,於與樹脂製管接頭11之接頭端部11a以特定之壓力以熔融狀態對接之外筒端部3a中,藉由該壓力之作用而該樹脂部分21於徑向流動並向內周側移動亦如圖4所示,該樹脂部分21進入至介隔內面階差4而設置於此處之擴徑空間5,故而防止樹脂部分21隆起至較形成配管之管路之一部分之管本體2之內部流路P之內面靠內周側為止。因此,可有效地抑制導致積液或流量之降低之問題之內凸起之產生。作為其結果,可不考慮內凸起之形成而設定熔接時之加熱及加壓條件,故而能夠使端部彼此以充分高之強度熔接。 According to this situation, when the end is welded, the
因此,如此製造之樹脂製配管係於其具備之樹脂製管構件1與其他樹脂製管構件或樹脂製管接頭11之連結部位Cp、或樹脂製管構件1彼此之連結部位之內側,如圖4所示,內面階差4之至少一部分會由外筒端部3a之樹脂部分21填充,較佳為該連結部位Cp具有與管本體2之內徑Dt相等或大於內徑Dt之內徑。即,以於所製造之樹脂製配管之連結部位Cp,不存在如使內徑較管本體2之內徑Dt小之內凸起般之隆起部之方式,設計樹脂製管構件1之內面階差4或外筒3、管本體2等之尺寸形狀。 Therefore, the resin piping manufactured in this way is located inside the connection part Cp between the
具體而言,於連結部位Cp之內徑為管本體2之內徑Dt以上之情形時,連結部位Cp之內徑與管本體2之內徑Dt之差較佳為於連結部位Cp之直徑最大之部分,設為0mm以上且1mm以下。若連結部位Cp之內徑較管本體2之內徑Dt過 大,則擔心產生積液。 Specifically, when the inner diameter of the connecting portion Cp is greater than the inner diameter Dt of the
再者,此處,於圖示之實施形態中,外筒3配置於覆蓋包含管本體2之本體端部2a之端部側部分之區域。但是,即便於外筒以遍及軸線方向之整體覆蓋管本體之周圍之方式設置之情形時,若於外筒端部形成有內面階差,則亦可發揮如上述之內凸起抑制效果,故而外筒只要至少覆蓋本體端部而配置即可。 Furthermore, here, in the embodiment shown in the figure, the
外筒3熔接於管本體2,尤佳為藉由如下述之嵌入成形而熔接於管本體2,但並不限定於此,例如亦可藉由接著劑之使用或形成於外筒及管本體之各者之未圖示之凹部及凸部等之嵌合或卡合及其他各種手法而固定或固著。 The
由外筒端部3a與本體端部2a形成之內面階差4係其徑向之高度Hs為0.5mm~1.5mm較佳。於內面階差4之徑向之高度Hs小於0.5mm之情形時,於在外筒端部3a與樹脂製接頭11之接頭端部11a等熔接時,由於容許樹脂部分21之隆起之內面階差4過小,因此有內凸起向內周側隆起而形成之虞。另一方面,若使內面階差4之徑向之高度Hs大於1.5mm,則擔心熔接強度不足或積液。 The
又,外筒端部3a之相對於管本體2之本體端部2a的軸線方向AD之突出長度Lc例如較佳為0.2mm~1.0mm。其原因在於,於外筒端部3a之該突出長度Lc過長之情形時,存在產生積液之可能性,另一方面,於突出長度Lc過短之情形時,有於熔接時熔融至管本體2為止,而產生超過管本體2之內面之內凸起之虞。 Moreover, the protruding length Lc of the
於圖示之樹脂製管構件1中,藉由如上所述之內面階差4而形成之擴徑空間5係由平行於與軸線方向AD正交之平面之本體端部2a之端面、與外筒端部3a之突出部分之內面而劃分,形成大致矩形剖面之環狀。 In the
再者,此處,熔接於樹脂製管接頭11之接頭端部11a等之外筒端 部3a之端面3b之面積較佳為於與其之間形成內面階差4之本體端部2a之端面之面積之兩倍以上。藉此,可與樹脂製管接頭11之接頭端部11a等充分牢固地熔接。但是,若外筒端部3a之端面3b之面積過大,則擔心成為凹痕等外觀不良,故而外筒端部3a之端面3b之面積可設為本體端部2a之端面之面積之三倍以下。 Furthermore, here, the area of the
又,為了更有效地防止熔接時之樹脂部分向內周側之隆起,而外筒端部3a之端面3b如圖示之實施形態般,可具有隨著朝向徑向之內側而逐漸向深處於軸線方向AD之內側之方向傾斜的錐形狀。更具體而言,形成外筒端部3a之錐形狀之端面3b之傾斜角度θ較佳為相對於與軸線方向AD正交之平面為5°~10°之範圍內。若使錐形狀之端面3b之傾斜角度θ未達5°則擔心樹脂部分21向內周側過分隆起,若使傾斜角度θ大於10°則有熔接不足之虞。但是,此種外筒端部3a之端面3b之錐形狀並非為必需之構成。 In addition, in order to more effectively prevent the resin portion from bulging toward the inner periphery during welding, the
再者,雖然省略圖示,但除了如此使外筒端部3a之端面3b為錐形狀以外或代替其,亦可使管本體之本體端部之端面為相同之錐形狀。於該情形時,本體端部之錐形狀之端面亦可相對於與軸線方向正交之平面以5°~10°之範圍內傾斜。 Furthermore, although illustration is omitted, in addition to or instead of making the
如上所述之外筒3及由其所形成之內面階差4,自有效地抑制於兩端部由熔接所致之內凸起之產生之觀點而言,較佳為形成於樹脂製管構件1之兩端部,但亦可根據熔接於各端部之其他樹脂製管構件或樹脂製管接頭之端部之態樣等,僅於樹脂製管構件1之任一個端部,形成外筒3及內面階差4。關於外筒端部3a之端面3b之錐形狀亦相同地,可設置於至少一個端部。 As described above, the
再者,如圖5所示之變形例般,可於外筒33之外筒端部33a之外面側,設置在軸線方向之外側使外徑變小之外面階差34。該外面階差34由於可有效地抑制與樹脂製管接頭11之接頭端部11a等之熔接時之樹脂部分向外周側之隆起,故而自配管之配置空間或外觀之觀點而言較佳。外面階差34之尺寸形狀 可根據端面之大小等之特定條件而適當設定,但亦可設為與內面階差4相同之尺寸形狀。 Furthermore, as in the modified example shown in FIG. 5, the
又,如圖6所示之其他變形例般,可於外筒43之外筒端部43a之內面,設置在外筒端部43a之內面側及軸線方向外側之各者開口且於軸線方向之外側使內徑變大之內側凹部46。藉此,可使內凸起更確實地凹陷至較管內面更靠外周側。即便於該情形時,外筒端部43a之端面43b亦較管本體2之本體端部2a之端面更向軸線方向之外側突出而定位,於外筒端部43a之內面與本體端部2a之內面之間形成內面階差4。 In addition, as shown in other modifications shown in FIG. 6, the inner surface of the
內側凹部46之軸線方向之形成區域例如可設為自較管本體2之本體端部2a之端面更靠向軸線方向內側0.5mm之位置至較該端面更靠向軸線方向外側1.0mm之位置為止。又,內側凹部46之徑向之長度例如可設為0.5mm~1.0mm。 The formation area of the
再者,於圖6所示之處,於外筒端部43a,與內側凹部46一起設置有外面階差44,雖然省略圖示,但亦可不設置外面階差44而僅設置內側凹部46。 In addition, at the point shown in FIG. 6, the
較佳為,於藉由端部之熔接而與樹脂製管構件1連結之樹脂製管接頭11之與樹脂製管構件1之外筒端部3a熔接之接頭端部11a,亦設置有與樹脂製管構件1者實質上相同之內面階差12。於該情形時,自相同之觀點而言,較佳為接頭端部11a之內面階差12之徑向之高度為0.5mm~1.5mm,且較佳為設為具有下述錐形狀,且錐形狀之端面11b之傾斜角度相對於與軸線方向正交之平面為5°~10°之範圍內,該錐形狀係接頭端部11a之端面11b隨著朝向徑向之內側而逐漸向深處於軸線方向之內側之方向傾斜者。 Preferably, in the resin pipe joint 11 connected to the
作為樹脂製管接頭11,例如,有內部流路彎折為大致L字狀之彎頭、或內部流路於中途分支而形成T字狀等之管接頭、內部流路之剖面積於中途變化之縮徑接頭等。 As the resin pipe joint 11, there are, for example, an elbow in which the internal flow path is bent into a substantially L shape, or a pipe joint in which the internal flow path is branched in the middle to form a T shape. The cross-sectional area of the internal flow path changes in the middle. The reduced diameter joints, etc.
若對製造如以上所述之樹脂製管構件1之方法之一例進行敍述, 則首先進行由特定之樹脂材料藉由擠壓成形等而形成管本體2之本體成形步驟。此處,藉由利用擠壓成形來形成長條管狀素材,並將其切斷為特定長度,亦可形成管本體2。該切斷例如可分為將長條管狀素材大致切割之第一段切斷、與然後以較高之精度切割為特定長度且對端面進行精加工之第二段切斷而進行。 To describe an example of the method of manufacturing the
然後,進行如下外筒成形步驟,即,將管本體2之至少本體端部2a配置於射出成形模具內,對該射出成形模具中之與欲形成於管本體2之周圍之外筒3之形狀對應之內面形狀的空腔射出樹脂材料,使該樹脂材料冷卻硬化,於管本體2之外周側形成外筒3。藉由此種嵌入成形,可於管本體2之周圍之特定之位置,使具有特定形狀之外筒3熔接而形成,故而與將另外形成之外筒3然後固定或固著於管本體2之情形時相比,就可容易且短時間地形成之方面而言較佳。 Then, the following outer cylinder forming step is performed, namely, arranging at least the
於如上述般藉由嵌入成形而於管本體2之周圍形成外筒3之外筒成形步驟之前,亦可進行將管本體2之至少本體端部2a加熱而形成半熔融狀態之事前加熱步驟。藉此,於外筒成形步驟之嵌入成形時,管本體2與外筒3會牢固地一體化。但是,亦可省略該事前加熱步驟。 Before the outer tube forming step of forming the
再者,此處,藉由調整射出成形模具之空腔形狀,可將端面3b具有上述錐形狀之外筒3成形於管本體2之周圍。或者,於外筒成形步驟中,亦可進行如下端部加工步驟,即,將具有平行於與軸線方向AD正交之平面之端面之外筒3暫時形成,於外筒成形步驟之後,使用端面切割器等,將外筒端部3a之端面加工為該錐形狀。 Furthermore, here, by adjusting the cavity shape of the injection molding die, the
[實施例] [Example]
其次,試作本發明之樹脂製管構件,確認其性能,於以下進行說明。但是,此處之說明係以單純之例示為目的,並不意圖限定於此。 Next, the resin pipe member of the present invention is prototyped to confirm its performance, and the description will be given below. However, the description here is for the purpose of mere illustration, and is not intended to be limited to this.
作為比較例,如圖7(a)所示,製作兩根樹脂製管構件,該樹脂製管構件係使外筒,以不產生內面階差之方式使端面彼此位於大致同一平面上,藉由熔接而固定於管本體之外周側。 As a comparative example, as shown in Fig. 7(a), two resin pipe members were made. The resin pipe members are made of an outer cylinder so that the end faces are located on the same plane so as not to generate a step difference in the inner surface. It is fixed to the outer peripheral side of the pipe body by welding.
使該等樹脂製管構件於端部彼此對接地相互熔接而連結。此處,端部熔接時之加熱時間為80sec,壓入量設為1.0mm。對端部熔接後之連結部位進行確認,結果如圖7(b)所示,於徑向內側形成有以1.5mm之大小豎起之內凸起。 These resin pipe members are welded and connected to each other at the ends. Here, the heating time at the end welding is 80 sec, and the pressing amount is 1.0 mm. The connection part after the end welding was confirmed. As shown in Fig. 7(b), an inner protrusion with a size of 1.5 mm was formed on the inner side in the radial direction.
作為發明例1,與比較例相同地製作兩根樹脂製管構件,該樹脂製管構件係於管本體之外周側熔接固定外筒之後,分別對該管本體之本體端部以於軸線方向凹陷各0.5mm之方式進行切削加工,如圖8(a)所示,形成外筒端部之內面與本體端部之內面之內面階差。 As Inventive Example 1, two resin pipe members were produced in the same manner as in the comparative example. After the resin pipe member was welded and fixed to the outer cylinder on the outer peripheral side of the pipe body, the ends of the pipe body were respectively recessed in the axial direction. Each 0.5mm method is used for cutting, as shown in Fig. 8(a), to form a step difference between the inner surface of the end of the outer cylinder and the inner surface of the end of the body.
將該等樹脂製管構件於與比較例相同之條件下,於端部彼此對接地相互熔接而連結。對端部熔接後之連結部位進行確認,結果如圖8(b)所示,未形成內凸起。再者,於連結部位之內面確認到若干之槽,認為此種槽可藉由壓入量等之端部熔接時之條件之調整而消失。 These resin pipe members were welded and connected to each other at the ends under the same conditions as in the comparative example. The connection part after the end welding was confirmed. As shown in Fig. 8(b), no internal protrusion was formed. In addition, several grooves were confirmed on the inner surface of the connection part, and it is considered that such grooves can be eliminated by adjusting the conditions at the time of end welding such as the amount of press-in.
作為發明例2,與比較例相同地製作兩根樹脂製管構件,該樹脂製管構件係於管本體之外周側熔接固定外筒之後,關於一者,對該管本體之本體端部以於軸線方向凹陷1mm之方式進行切削加工,關於另一者,對其端面,以相對於與軸線方向正交之平面之傾斜角度成為10°之錐形狀之方式實施錐度切割,如圖9(a)所示,分別形成外筒端部之內面與本體端部之內面之內面階差。 As Inventive Example 2, two resin pipe members were produced in the same manner as the comparative example. The resin pipe members were welded and fixed to the outer cylinder on the outer peripheral side of the pipe body. Cutting is performed with a recessed 1mm in the axial direction. For the other, taper cutting is performed so that the end face of the other is tapered so that the inclination angle of the plane perpendicular to the axial direction becomes 10°, as shown in Figure 9(a) As shown, the inner surface level difference between the inner surface of the end of the outer cylinder and the inner surface of the end of the main body is formed respectively.
將該等樹脂製管構件於與比較例相同之條件之下,於端部彼此對接地相互熔接而連結。對端部熔接後之連結部位進行確認後,結果如圖9(b)所示,未形成內凸起。於本發明例2中,亦於連結部位之內面確認到若干之槽。 Under the same conditions as the comparative example, these resin pipe members were welded and joined to each other at the ends. After confirming the connection part after the end part was welded, as shown in Fig. 9(b), no inner protrusion was formed. In Example 2 of the present invention, several grooves were also confirmed on the inner surface of the connection part.
以上,根據本發明,可知於將樹脂製管構件與樹脂製管接頭或 其他樹脂製管構件於端部熔接時,可有效地抑制向作為熔接部之連結部位產生內凸起。 As described above, according to the present invention, it is understood that when a resin pipe member is welded to a resin pipe joint or other resin pipe member at the end, it is possible to effectively suppress the generation of inward protrusions at the connection portion as the weld.
Claims (13)
Applications Claiming Priority (3)
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PCT/JP2017/024015 WO2019003394A1 (en) | 2017-06-29 | 2017-06-29 | Resinous tube member, method for manufacturing resinous tube member, resinous tube fitting, and resinous piping |
WOPCT/JP2017/024015 | 2017-06-29 |
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JP (1) | JP6899900B2 (en) |
CN (1) | CN110366481B (en) |
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JP7210374B2 (en) * | 2019-05-15 | 2023-01-23 | 富士化工株式会社 | Drain pipe joint and its manufacturing method |
JP7311367B2 (en) * | 2019-09-09 | 2023-07-19 | ヤマハ発動機株式会社 | Horizontal articulated robot |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000043086A (en) * | 1998-07-30 | 2000-02-15 | Sekisui Chem Co Ltd | Production of flexible pipe |
JP2007237748A (en) * | 2007-06-28 | 2007-09-20 | Kubota Ci Kk | Electro-fusion socket |
TW201217678A (en) * | 2010-04-22 | 2012-05-01 | Nippon Pillar Packing | Welding joint and welding method for the same |
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JPH058284A (en) * | 1991-06-29 | 1993-01-19 | Tokai Rubber Ind Ltd | Manufacture of resin hose |
JPH08216257A (en) * | 1995-02-15 | 1996-08-27 | Kojima Press Co Ltd | Resin tube |
KR200200899Y1 (en) * | 2000-02-08 | 2000-10-16 | 주식회사디엠티 | Body-member and cap-member construction method of a tube-pipe connection valve |
FR2860279B1 (en) * | 2003-09-26 | 2008-11-28 | Inergy Automotive Systems Res | SEALED COMPOSITE CONDUIT, PROCESS FOR MANUFACTURING THE SAME AND SYSTEM FOR SUPPLYING AN INTERNAL COMBUSTION ENGINE |
CN2806941Y (en) * | 2005-07-15 | 2006-08-16 | 俞乃苟 | Joining pipe fitting for fusion joining of composite pipes |
CN201133537Y (en) * | 2007-06-15 | 2008-10-15 | 上海上丰集团有限公司 | Hot melting socket joint connecting pipe fitting |
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2017
- 2017-06-29 WO PCT/JP2017/024015 patent/WO2019003394A1/en active Application Filing
- 2017-06-29 CN CN201780087521.7A patent/CN110366481B/en active Active
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000043086A (en) * | 1998-07-30 | 2000-02-15 | Sekisui Chem Co Ltd | Production of flexible pipe |
JP2007237748A (en) * | 2007-06-28 | 2007-09-20 | Kubota Ci Kk | Electro-fusion socket |
TW201217678A (en) * | 2010-04-22 | 2012-05-01 | Nippon Pillar Packing | Welding joint and welding method for the same |
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WO2019003394A1 (en) | 2019-01-03 |
JPWO2019003394A1 (en) | 2020-05-07 |
CN110366481B (en) | 2023-02-28 |
JP6899900B2 (en) | 2021-07-07 |
CN110366481A (en) | 2019-10-22 |
TW201905373A (en) | 2019-02-01 |
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