1308551 ⑴ 九、發明說明 【發明所屬之技術領域】 本發明有關一根據申請專利範圍第1項之前言部分的 紗線制動本體》 【先前技術】 於針織給紗裝置的習知慣例中，提供—呈精密截錐形 • 外層而由平滑的真空成形塑膠材料所製成之紗線制動本 體。該支撐部分係一緊抓該截錐形外層之小直徑端部的支 撐環，且被安裝爲一分開部分’該分開部分包含用於在張 力彈簧中鉤住之錨扣開口，該彈簧由該支撐部分徑向地向 外延伸’並於該同軸向操作位置中與該針織給紗裝置之儲 存本體的圓形提取邊緣接觸地固持該制動本體。具有該張 力彈簧之固持結構係結構上複雜的。在該紗線制動本體製 造及組裝該支撐部分需要數個操作步驟。在該提取邊緣上 • 方及沿著該紗線制動表面在該截錐形外層之內部側邊由該 儲存本體離開、且同時像一時鐘之時針旋轉之紗線，係軸 向拉開經過該小直徑端部，使得該張力彈簧允許該紗線制 動本體之某一可移動性，及在該儲存本體之提取邊緣上中 心定位該紗線制動本體。於—些案例中，該紗線制動本體 係一磨損部分，而必需相當頻繁地替換。由於該固持結 «’一替換操作係費時的。該支撐部分增加該制動部分之 質量。 (2) 1308551 【發明內容】 •本發明之一目的係提供一種如在前文所論及型式之紗 線制動本體’其具有低質量、可用合理成本製成、及能被 輕易地替換及中心定位。 此目的係藉著申請專利範圍第1項之結構特徵所達 成。 既然該支撐部分係如單一元件般整合進入該截錐形外 # 層’該支擦部分能於製造該紗線制動本體期間用合理成本 形成。該球面支撐部分係僅只置入一合適之球面淺盤，並 具有用於支撐該制動本體之其球面外表面。該支撐部分係 在該儲存本體之提取邊緣藉著該接觸壓力所固定，及係藉 著該球面淺盤所中心定位。該球面支撐部分可以說是分別 形成球形接頭或萬用接頭之一部分，其將該紗線制動本體 適當地中心定位在該儲存本體之提取邊緣。 該紗線制動本體可輕易地替換。該整合式球面支撑部 Φ 分不會增加該制動本體之質量，且亦不會顯著地影響主要 於該制動表面區域中之截錐形外層的徑向可變形能力。使 用該可輕易地塑形之塑膠材料，以便與該截錐形外層一體 地形成該球面支撐部分。於此案例中，僅只該支撐部分藉 著該球面形式稍微增加之硬度係充分用於該紗線制動本體 於該球面淺盤中之一穩定懸掛，而沒有額外之強化手段。 適宜的是，於該截錐形外層中及於該球面支撐部分 中，相同壁面厚度係呈現於該紗線制動本體中。該壁面厚 度例如總計於〇.2毫米及〇·5毫米之間。以此方式，該紗 (3) 1308551 線制動本體可由一簡單之坯料所製成。另一選擇係，其係 可能於該支撐部分中比於該截錐形外層中至少區域性地提 供一不同壁面厚度。 該球面支撐部分之球體半徑能設計成可使其係對在該 紗線制動本體的大直徑端部之直徑呈一適宜之關係。該球 體半徑例如可總計於大約該直徑的百分之3 0至百分之 60。藉著此測量，在該滾珠接頭中達成一大接觸表面’而 • 該截錐形外層之徑向可變形能力不會顯著地影響該制動表 面之區域。 該壁面厚度適宜地係比〗· 〇毫米較小’較佳地是甚至 比0.5毫米較小。萬一紗線制動本體在該大直徑端部具有 大約150毫米之直徑，該壁面厚度可爲大約0.3毫米。 該規則之截錐形外層的錐角將總計大約1〇〇度及大約 130度之間。適宜地是，該錐角總計120度。 製成該紗線制動本體之塑膠材料應係一熱塑性材料， # 例如一聚酯、聚乙烯對苯二甲酸酯（PET)、或聚氯乙烯。 可輕易地設計此等材料之形狀，及允許達成高耐用性及優 異之表面性質。 該紗線制動本體適宜地係藉著較佳地是熱真空成形由 —坯料所製成。於此案例中，該坯料甚至可爲一平面式坯 料。於該制動表面之區域中，至少形成該制動本體之內部 表面的染料表面應被拋光，以便於該紗線制動本體中產生 一盡可能平滑之內部表面。 爲了於該紗線制動本體中達成一均勻變形之特性，該 -6- (4) 1308551 球面支撐部分將持續該截錐形外層而沒有一轉移部分。該 球面曲率可以說是係貼靠進入該截錐形。 於該截錐形外層之軸心方向中所測量的球面支撐部分 之高度尺寸，應測量於該紗線制動本體之高度尺寸的大約 百分之15至百分之35之間、較佳地是少於百分之30。 藉著將該球面支撐部分整合進入該截錐形外層’該球 面支撐部分構成該截錐形外層之小直徑端部’而該紗線係 Φ 提取經過該小直徑端部。該紗線可直接地提取經過該支撐 部分，或另一選擇係’藉著一紗線孔眼之幫助’該孔眼係 放在此有或沒有連接或接合至該紗線制動本體之位置。 該球面支撐部分之外徑將總計爲該較小直徑端部之內 徑的大約2.5至4.5倍。另一選擇係，該球面支撐部分之 外徑可總計於該大直徑端部之直徑的大約百分之2 5及百 分之45之間。以此方式，在該滾珠接頭中達成一充分大 之接觸表面。 ® 該截錐形外層之內部表面、至少於該制動表面之區域 中應具有對應於一拋光表面之平滑性。 【實施方式】 圖1中之紗線制動本體B適宜地是用於一未示出之針 織給紗裝置’並提供用於與一針織給紗裝置之針筒形儲存 本體的圓形提取邊緣相互作用，以便用一相當低之制動力 作動或載入該紗線，而在該提取邊緣上方朝內地提取該紗 線’同時像一時鐘之時針般旋轉。爲此緣故，該紗線制動 (5) 1308551 本體係左右地抵靠著該提取邊緣與該儲存本體同軸向安 置，且係以懸掛方式固定，使得其係中心定位在該提取邊 緣，但仍然保持多少可移動。該紗線制動本體B係單件式 塑膠材料塑形部分，例如由像聚酯、聚乙烯對苯二甲酸 酯、或聚氯乙烯之熱塑性材料P製成。該紗線制動本體B 例如係藉著在一成形染料上真空成形所製成，於一些案例 中，甚至藉著熱真空成形。 # 該紗線制動本體B包括一規則之截錐形外層K及一整 合成單一元件之球面支撐部分S。該紗線制動本體B具有 一大直徑而具有直徑D之圓形端部1，及一設有開口 4及 內徑d之小直徑圓形端部2。該截錐形外層K具有一線性 母線3及一軸Y。該球面支撐部分S係該母線3之一平滑 延續部分，且具有一例如於該直徑D的百分之30至百分 之60間之球體半徑R。該球體之中心Z係位在該截錐形 外層K之軸Y上，該軸Y係延長超出該大直徑端部1。 Φ 於一具有大約110毫米直徑D及120度錐角α的紗線 制動本體Β之簡明具體實施例中，該球體半徑R係大約 590毫米。 該紗線制動本體Β之壁面厚度X係於該截錐形外層Κ 中及於該球面支撐部分S中相同的’且總計〇.2毫米及最 大1.0毫米，較佳地是總計大約〇 · 3毫米（於一紗線制動本 體之案例中具有150毫米之直徑D)。另一選擇係’該球 面支撐部分中之壁面厚度至少可局部不同於該截錐形外層 Κ中之壁面厚度。 -8 - (7) 1308551 【主要元件符號說明】 1 :大直徑端部 2 :小直徑端部 3 :母線 4 :開口 6 :邊緣 • F :制動表面 5 :球面支撐部分</ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> </ RTI> < Desc/Clms Page number> A yarn brake body made of a smooth, vacuum-formed plastic material in a finely frustoconical shape. The support portion is a support ring that grips the small-diameter end of the frustoconical outer layer and is mounted as a separate portion that includes an anchor opening for hooking in a tension spring, the spring being The support portion extends radially outwardly and holds the brake body in contact with the circular extraction edge of the storage body of the knitting yarn feeder in the co-axial operating position. The holding structure with the tension spring is structurally complicated. It takes several steps to construct and assemble the support portion in the yarn brake system. The yarn on the extraction edge and the yarn along the yarn braking surface that is separated from the inner side of the frustoconical outer layer by the storage body and simultaneously rotated like a clockwise clock is axially pulled through the The small diameter end portion allows the tension spring to permit a certain mobility of the yarn brake body and centrally position the yarn brake body on the extraction edge of the storage body. In some cases, the yarn brake body is a worn portion that must be replaced quite frequently. Since the holding of the «' a replacement operation is time consuming. The support portion increases the mass of the brake portion. (2) 1308551 SUMMARY OF THE INVENTION One object of the present invention is to provide a yarn brake body of the type as discussed above which has a low quality, can be made at a reasonable cost, and can be easily replaced and centered. This objective is achieved by applying the structural features of item 1 of the patent scope. Since the support portion is integrated into the frustoconical outer layer as a single element, the wipe portion can be formed at a reasonable cost during manufacture of the yarn brake body. The spherical support portion is only placed in a suitable spherical shallow plate and has a spherical outer surface for supporting the brake body. The support portion is fixed by the contact pressure at the extraction edge of the storage body and is centered by the spherical shallow disk. The spherical support portion can be said to form a portion of a ball joint or a universal joint, respectively, which suitably positions the yarn brake body centrally at the extraction edge of the storage body. The yarn brake body can be easily replaced. The integrated spherical support portion Φ does not increase the mass of the brake body and does not significantly affect the radial deformability of the frustoconical outer layer primarily in the brake surface region. The easily deformable plastic material is used to integrally form the spherical support portion with the frustoconical outer layer. In this case, only a slight increase in the hardness of the support portion by the spherical form is sufficient for the yarn suspension body to stably hang in one of the spherical shallow plates without additional reinforcement means. Suitably, in the frustoconical outer layer and in the spherical support portion, the same wall thickness is present in the yarn brake body. The wall thickness is, for example, between 〇.2 mm and 〇·5 mm. In this way, the yarn (3) 1308551 wire brake body can be made from a simple blank. Another option is to provide a different wall thickness at least regionally in the support portion than in the frustoconical outer layer. The spherical radius of the spherical support portion can be designed to have a suitable relationship to the diameter of the large diameter end portion of the yarn brake body. The radius of the sphere may, for example, total about 30 to 60 percent of the diameter. By this measurement, a large contact surface is achieved in the ball joint' and the radial deformability of the frustoconical outer layer does not significantly affect the area of the brake surface. The thickness of the wall is suitably smaller than that of 〇·mm, which is preferably even smaller than 0.5 mm. In the event that the yarn brake body has a diameter of about 150 mm at the large diameter end, the wall thickness can be about 0.3 mm. The taper angle of the frustoconical outer layer of the rule will total between about 1 degree and about 130 degrees. Suitably, the cone angle is a total of 120 degrees. The plastic material from which the yarn brake body is made should be a thermoplastic material, such as a polyester, polyethylene terephthalate (PET), or polyvinyl chloride. The shape of these materials can be easily designed and allowed to achieve high durability and superior surface properties. The yarn brake body is suitably made of a blank by preferably hot vacuum forming. In this case, the blank can even be a flat blank. In the region of the braking surface, at least the surface of the dye forming the inner surface of the brake body should be polished to produce a smoothest inner surface in the yarn braking body. In order to achieve a uniform deformation characteristic in the yarn brake body, the -6-(4) 1308551 spherical support portion will continue the truncated cone outer layer without a transfer portion. The spherical curvature can be said to be in contact with the truncated cone. The height dimension of the spherical support portion measured in the axial direction of the frustoconical outer layer should be measured between about 15 to 35 percent of the height dimension of the yarn brake body, preferably Less than 30 percent. By integrating the spherical support portion into the frustoconical outer layer 'the spherical support portion constitutes the small diameter end portion of the frustoconical outer layer' and the yarn system Φ is extracted through the small diameter end portion. The yarn may be drawn directly through the support portion, or another option may be 'by the aid of a yarn aperture' that the aperture is placed with or without the attachment or engagement to the yarn brake body. The outer diameter of the spherical support portion will total about 2.5 to 4.5 times the inner diameter of the smaller diameter end portion. Alternatively, the outer diameter of the spherical support portion may total between about 25% and 45% of the diameter of the large diameter end. In this way, a sufficiently large contact surface is achieved in the ball joint. ® The inner surface of the frustoconical outer layer, at least in the region of the braking surface, should have a smoothness corresponding to a polished surface. [Embodiment] The yarn brake body B of Fig. 1 is suitably used for a knitting yarn feeder device not shown and provides a circular extraction edge for a cylindrical storage body with a knitting yarn feeder. Acting to actuate or load the yarn with a relatively low braking force, while extracting the yarn inwardly above the extraction edge while rotating like a clockwise hour hand. For this reason, the yarn brake (5) 1308551 is placed in the same axial direction as the storage body against the extraction edge, and is fixed in a hanging manner so that the center of the system is positioned at the extraction edge, but remains How much can be moved. The yarn brake body B is a one-piece plastic material shaped portion, for example, made of a thermoplastic material P such as polyester, polyethylene terephthalate or polyvinyl chloride. The yarn brake body B is made, for example, by vacuum forming on a forming dye, and in some cases, even by hot vacuum forming. # The yarn brake body B comprises a regular truncated conical outer layer K and a spherical support portion S which is a single composite element. The yarn brake body B has a circular end 1 having a large diameter and having a diameter D, and a small-diameter rounded end 2 provided with an opening 4 and an inner diameter d. The truncated cone outer layer K has a linear bus bar 3 and an axis Y. The spherical support portion S is a smooth continuation of the bus bar 3 and has a spherical radius R of, for example, 30 to 60 percent of the diameter D. The center Z of the sphere is located on the axis Y of the frustoconical outer layer K which extends beyond the large diameter end 1. Φ In a simplified embodiment of a yarn brake body having a diameter D of about 110 mm and a cone angle α of 120 degrees, the radius R of the sphere is about 590 mm. The wall thickness X of the yarn brake body 系 is the same in the frustoconical outer layer 及 and in the spherical support portion S and totals 〇.2 mm and at most 1.0 mm, preferably a total of about 〇·3 Millimeter (having a diameter D of 150 mm in the case of a yarn brake body). Alternatively, the thickness of the wall in the spherical support portion may be at least partially different from the thickness of the wall in the frustoconical outer layer. -8 - (7) 1308551 [Description of main component symbols] 1 : Large diameter end 2 : Small diameter end 3 : Busbar 4 : Opening 6 : Edge • F : Brake surface 5 : Spherical support