201103658 九、發明說明： 【發明所屬之技術領域】 本發明為油壓缸上/下蓋成型方法及其裝置，係依據油 壓缸之上、下蓋主體之形狀製成母模之内模，以及配合一 上、下蓋公模，將一金屬素材至於該内模内，應用該金屬 素材之伸展特性，直接以公模對母模内之金屬素材衝壓成 型為一上、下蓋主體，同時位於該上、下蓋主體之中央處 亦成型一上、下蓋管柱、中心貫孔、中心槽孔與四角落之 幾何形缺槽，及其透過CNC車床加工出上、下蓋穿孔，與 • 該上、下蓋管柱周圓車出一環溝，以完成該油壓缸之上、 下蓋成品，達到製造快速，i減少加工程序及廢料之浪費 的技術領域。 【先前技術】 按目前油壓缸之基礎架構，係由上、下蓋分別與一油 壓缸體兩端予以覆蓋，以封閉内部所裝設之活塞，提供氣 體或液體由上、下蓋往復注入氣體或液體，而對内部之活 塞作往復推擠，以提供活塞於油壓缸體内作往復運動。 請參閱第一、二圖所示，係為習知的上、下蓋製法， Φ 係以鐵板火焰切割方法，將一鐵板分別切割出一上、下蓋 成型素材A、A’（如第一圖-A及第二圖-A)，再以銑床將多 餘物料Al、A1’加工成型上、下蓋初胚B、B’（如第一圖-A 及第二圖-A);請參閱第一圖-B及第二圖-B，而後再應用 CNC車床成型於該上、下蓋初胚B、B’上端車出一管柱B1、 ΒΓ，以及管柱B1、ΒΓ周圓之環溝B3、B3’，最後以CNC 車床由管柱B卜ΒΓ中心鑽出一中心貫孔B2(第一圖-B、C) 及中心槽孔B2(第二圖-B、C)，並於該上、下蓋主體B、B’ 四角落分別貫穿一貫孔B4、B4’，供螺絲穿設，以提供覆 蓋於油壓缸體之兩端鎖設結合。 【發明内容】 201103658 一、 解決問題： 1.習知上、下蓋之製法，其程序繁雜，首先需以火妒 切割成型素材，再以銑床加工六面，而後以CNC車床成^ 管柱及周圓极溝’再以鑽床成型中心槽孔，如此製造程 的速度緩慢’且精度亦因加工程序繁雜而有偏差之虞f 2·前述的上、下蓋初胚，因所需加工範圍極大，相對 產生加工廢料極為浪費，使其成本提高，且其製造緩慢下’， 無法大量生產，以致於降低其競爭力。 二、 解決手段： φ 1.本發明係在一上蓋公模依據該油壓缸之上蓋形 狀，於該上蓋公模之中心底端設一中心衝，而該母模之内 據該油壓缸之上蓋主體形狀開設，並於該内模底部 設心，，其周緣開設一圓槽，再將一金屬素材置於該 ^田am藉該公模直接對該金屬素材於該内模衝壓成型， 屬素材之伸展特性向内、外周邊擴張，以成型-上 其中央於該内模的圓槽内形成一上蓋管柱，以及 』二中與中心錐之對衝’即在該上蓋管柱中央直接成 塞主二孔；再應用一整形模具，其内模開設相對於上 φ段内徑，形狀，且該内模開設一前段内徑而銜接一後 間相當於段内徑稍大於後段内徑，使該後段内徑的空 用一衝榲=需該上蓋（如第三圖-F)相同規格尺寸，再應 内徑，而i別將該上蓋主體迫入該前段内徑後通過該後段 上蓋主體;用其金屬伸展性於通過後段内徑作整形，使該201103658 IX. Description of the Invention: [Technical Field] The present invention relates to a hydraulic cylinder upper/lower cover forming method and apparatus thereof, which are formed into an inner mold of a master mold according to the shape of the upper and lower cover bodies of the hydraulic cylinder. And a metal material is placed in the inner mold in conjunction with an upper and lower cover male mold, and the metal material in the female mold is directly formed into a top and a lower cover body by using a male mold in a male mold. At the center of the upper and lower cover bodies, a top and bottom cover pipe column, a central through hole, a central slot and a four-corner geometrically shaped slot are formed, and the upper and lower cover holes are formed through a CNC lathe, and • The upper and lower cover pipe cylinders are out of a circular groove to complete the upper and lower cover of the hydraulic cylinder to achieve rapid manufacturing, and reduce the waste of processing procedures and waste. [Prior Art] According to the current infrastructure of the hydraulic cylinder, the upper and lower covers are respectively covered with the ends of a hydraulic cylinder to close the piston installed inside, and the gas or liquid is supplied from the upper and lower covers. The gas or liquid is injected, and the inner piston is reciprocally pushed to provide reciprocation of the piston in the hydraulic cylinder. Please refer to the first and second figures for the conventional upper and lower cover method. Φ is an iron plate flame cutting method, and an iron plate is separately cut out from the upper and lower cover molding materials A and A' (eg In the first figure -A and the second figure -A), the excess material Al, A1' is processed by the milling machine to form the upper and lower cover embryos B, B' (as shown in the first figure -A and the second figure -A); Please refer to the first figure-B and the second figure-B, and then apply the CNC lathe to form a column B1, ΒΓ, and the column B1, ΒΓ circumference of the upper and lower cover primaries B and B'. The ring groove B3, B3', and finally a central through hole B2 (first picture -B, C) and a central slot B2 (second picture -B, C) are drilled from the column B dip center by a CNC lathe. And the four corners of the upper and lower cover bodies B and B' respectively penetrate through the consistent holes B4 and B4' for screwing to provide a locking combination covering the two ends of the hydraulic cylinder. [Summary of the Invention] 201103658 I. Solving the problem: 1. Knowing the method of making the upper and lower covers, the procedure is complicated. Firstly, the molding material is cut by fire, and then the six sides are processed by a milling machine, and then the CNC is made into a tube column and Zhou Yuanjigou's further drilling the center slot, so the speed of the manufacturing process is slow' and the accuracy is also biased due to the complicated processing procedure. f 2·The above-mentioned upper and lower cover primaries, due to the large processing range required Compared with the production of processing waste, it is extremely wasteful, and its cost is increased, and its manufacturing is slow, and it cannot be mass-produced, so as to reduce its competitiveness. Second, the solution: φ 1. The present invention is a top cover male mold according to the shape of the upper lid of the hydraulic cylinder, a central punch is arranged at the bottom end of the center of the upper cover male mold, and the hydraulic cylinder is The upper cover body is opened in shape, and a heart is arranged at the bottom of the inner mold, and a circular groove is formed on the periphery thereof, and then a metal material is placed on the metal mold to directly form the metal material in the inner mold by the male mold. The stretch characteristic of the material is expanded toward the inner and outer periphery, and a cap-column is formed in the circular groove of the inner mold in the center thereof, and the opposite of the central cone is formed in the center of the upper cap. Two main holes are plugged; another shaping die is applied, the inner mold is opened with respect to the inner diameter of the upper φ segment, and the inner mold is opened with a front inner diameter and the inner portion is equivalent to the inner diameter of the segment slightly larger than the inner diameter of the rear portion. Make the inner diameter of the inner section of the rear section a punch = the same size of the upper cover (such as the third figure -F), and then the inner diameter, and i do not force the upper cover body into the inner diameter of the front section and pass the back cover The main body; with its metal stretchability through the inner diameter of the rear section for shaping
貝孔硪上蓋主體於 以及位於該上蓋管柱周緣欲成型一環溝的 以減少加成一平滑面’而不需再額外藉銑床加工’ 工成太：豆後透過CNC車床將該上蓋管枉外緣及 四角落分別鑽一上蓋穿孔以形成/完 ，以成型一上蓋塞柱，可供—〇塑環（習 以及於中心貫孔内部具有平整表面的中心 201103658 $士j，可供—螺絲（習知省略）穿設讀上 因此， 之製造方法及其所應用之骏置達到製造快 速’且減j加工程序及廢料之浪費者。 明係與前述上蓋相同之製法，前述 Ik上盍的母模，其内模底端亦設有〜了 與 下蓋管柱的相對位置所開言“.二下蓋公 ΞΐίΖ:蓋主體的形狀外徑相當，其】：則相對於成 該母模的内模内，直接以該下蓋公模内 =時壓應:=义依其伸展特‘匕==的: :心雜中心槽jfiS該 ，四角洛分別成型-幾何形缺槽；再 1: =設相對於下蓋主體相同的形狀’且讀前2内 =銜接-後段内徑，該前段内㈣大 徑，使該 後m空間相當於所需該上蓋相同規u再應用 主體迫入該前段内經後通過該後段内 其金屬伸展性於通過後段内徑作整形，使該上 成::：面，而不需再額外藉銑床加工，以 =溝i及將下蓋管柱周緣欲成裂 ;下蓋主趙四角落的c:::::二=並3 製穿=益下蓋的成_節以= 的下蓋塞柱嵌入油壓缸兩端覆Μ 透過上盍塞柱與下盍 蓋穿孔與下蓋穿孔鎖緊，使螺絲頭容置 201103658 ，二僅一端所設螺母即可迫緊，以完成一油壓缸組合（習 知省略）。 4.本發明的下蓋於模具衝壓成型時，於該下蓋公模衝 ，面相y於預先於該四角落欲鑽設穿孔位置，分別設有— 1形衝塊，使該位置直接衝壓出幾何形缺槽，再分別於 ^幾^形，槽内鑽設—下蓋穿孔，以提供螺絲穿設該下蓋 =孔時，藉該幾何形缺槽供螺絲頭容置限位，使該組 ，用一工具對另一邊螺母作鎖設，以提供快裝。 【實施方式】 ^ φ 於!?上、下蓋之形狀’係依據所需油壓缸之形狀規 缸兩二所發明能易於瞭解，乃就該最典型之油壓 缸兩鈿所裝配的上、下蓋製法作說明。 請參閱第三圖-E所示，由於該油壓缸上蓋 t為Λ有平整//^：312,，因此，請參閱第三圖 二&- v&上蓋公模1依據該油壓缸之上蓋31，形 ^ ’於遠上盍么模1之中心底端設一中心 )之;油壓缸之上蓋主體3U如第三圖ί f- 1 金屬素材3置於該内模21内， ir 請 體31及八中央於该内模21的 柱3U，以及藉該中心衝u與中心錐2ii m ‘ 上蓋管柱311中央直接成型—中心貫孔312對言主 圖、第五圖-A〜C所示，一整开彡掘且^甘 °月> 於上蓋主體3i相同的形狀开H具^内模61開設相對 611而銜接-後段内徑612，該前段; 徑612,使該後段内_的_目 201103658 第三圖-F)相同規格尺寸，再應用一衝模7分別將該上蓋 主體31迫入該前段内徑611後通過該後段内徑612，而應 用其金屬伸展性於通過後段内徑612作整形，使該上= 體31周邊形成-平滑面（如第五圖_B)’ ‘ 銑床加工，以減少加工成本。 請配合參閱第三圖-D，該整形後的上蓋主體31 過CNC車床將該上蓋管柱311外緣及中心貫孔312内緣， 以及，於該上蓋管柱311周緣欲成型一環溝3111 (如|三 予以去除，以成型—上蓋塞柱311，: 可供- 〇型％ (習知省略）嵌入，以及於中心貫孔3 表上的平整中心貫孔312，（如第三圖—E);請 $閱第二圖-F，該上蓋域31於四角落 314以形成一完整上蓋31， 7f孔 該上蓋穿孔314;因此，！知，略）穿設 ,错由别述上蓋之製造方法及其所 ^之裝置’相製造快速，且減少加I程序及廢料之浪 =端亦設有-中心錐⑴及其周邊與二母42型Κΐ 柱511 (如第四圖—B、c)的相 所而成型下盍官 外徑相當，其底端則相對於成】= 第7圖= 的位置分別設一幾何形衝塊4二、f5i 2第四圖-C) 母模2的内模21内，直接以該下T以·3 3該 該内模21 _壁，特性而流向 及圓槽犯，以及内模”周邊内J 21底部的中心錐⑴ 與下蓋管柱511，且於下蓋管柱所需下蓋主體51 成型一中心槽孔512,以及藉 中心藉該中心錐211 措μ歲何形衝塊41於該下蓋主 201103658 角洛/刀別成型一幾何形缺槽514(如第四圖—b、c); 1參閱第五圖、第五圖—A〜c所示，一整形模具6, i内模 61 ^設相對於下蓋主體5!才目同的形狀，且設 而銜接一後段内徑612，該前段内徑^ ，使該後段内徑612的空間相當於所 而忒下盍51 (如第四圖_F)相同規格尺 迫入該前段内徑611後通口段= 今伸展性於通過後段内徑612作整形，使 周邊形成一平滑面（如第五圖亦不需 丹顯外藉銑床加工，以減少加工成本。 酸，ίΐϊ第四圖—D’而後再以CNC車床將下蓋管柱511 ㈣5111，以及中心槽孔512内部的加工 ，513予以去除（第四圖_£)，並且對該下蓋主 ===槽5U中心軸向分別鑽穿一下蓋穿孔5141角 “成本的成品’亦制節省物料、 八η:藉習知組裳方式’即可將前述上蓋31，與下蓋 刀別覆蓋於油壓缸兩端（；習知省略）， =，與下蓋51，的下蓋塞柱511’嵌入油壓 =金2 ^省略)’再以螺絲穿設於上蓋穿孔314:二= ，鎖緊，使螺絲頭容置於該幾何形缺槽514限：盍2 所ί:::可ϋ ’以完成一油壓红組合(習知省略)。 明的製法成型快速，且降低加工廢料 型上、展性直接衝壓成型或迫擠整形而成 之效加工’達到生產快速與降低成本 =本領域普通技術人員理解，在不脱離權利： 但都將落入本發明的保護範圍之内。 變化戍荨效， 201103658 五、圖式簡單說明： (一）圖式部份：The upper part of the upper cover of the beacon hole and the groove on the circumference of the upper cover column are to be formed to reduce the addition of a smooth surface without the need for additional milling machine processing. '工成太: After the bean, the outer edge of the upper cover tube is passed through the CNC lathe. And the four corners are respectively drilled with a top cover perforation to form/finish, to form a top cover plug, which can be used for the plastic ring (the center and the center of the central through hole with a flat surface 201103658 $ j, available - screw (Xi Therefore, the manufacturing method and the application of the Jun set to achieve rapid manufacturing and reduce the waste of the processing procedures and waste. The system is the same as the above-mentioned upper cover, the aforementioned master of the Ik captain The bottom end of the inner mold is also provided with the relative position of the lower cover pipe column. "Two lower cover male Ξΐ Ζ Ζ: the outer diameter of the cover body is equivalent, its:] relative to the inside of the female mold In the mold, directly in the lower cover of the male mold = when the pressure should be: = Yiyi according to its extension special '匕 ==: : Xin miscellaneous center groove jfiS, the four corners of the Luo shape - geometric missing groove; again 1: Set the same shape as the lower cover body 'and the first 2 readings = articulation - The inner diameter of the section, the large diameter of the (4) in the front section, so that the rear m space is equivalent to the same rule of the upper cover, and then the application body is forced into the front section, and then the metal stretches through the rear section to shape the inner diameter through the rear section. , so that the upper::: face, without the need for additional milling machine processing, to = groove i and the lower cover pipe column to be cracked; under the cover of the main Zhao four corner c::::: two = and 3 穿穿穿=================================================================================================== 2. Only one nut can be tightened at one end to complete a hydraulic cylinder combination (known omitted). 4. When the lower cover of the present invention is stamped and formed in the mold, the lower cover is punched, and the surface y is in advance. The four corners are to be drilled with perforation positions, respectively, and a -1 shaped punching block is arranged, so that the position is directly punched out of the geometrically shaped notch, and then respectively formed in the shape of the hole, the lower cover perforation is provided to provide the screw through. When the lower cover=hole is provided, the geometrical missing groove is used for the screw head to accommodate the limit, so that the set is locked with the tool to the other side nut, [Embodiment] ^ φ In the shape of the upper and lower covers, the invention is easy to understand according to the shape of the required hydraulic cylinders. The method of assembling the upper and lower covers is explained. Please refer to the third figure-E. Since the upper cover t of the hydraulic cylinder is flat / / ^: 312, please refer to the third figure II & The v& upper cover male mold 1 is based on the upper cover 31 of the hydraulic cylinder, and has a center at the bottom end of the center of the mold 1; the upper cover body 3U of the hydraulic cylinder is as shown in the third figure ί f-1 The metal material 3 is placed in the inner mold 21, ir the body 31 and the column 3U centered on the inner mold 21, and the center punching and the center cone 2ii m 'the upper cover tube 311 is directly formed in the center - the center through hole 312, the main picture, the fifth picture - A ~ C, a whole open digging and ^ Gan ° month> in the same shape of the upper cover body 3i open H ^ ^ inner mold 61 opened relative to 611 and connected - behind the inside The diameter 612, the front section; the diameter 612, so that the __ 201103658 third figure-F) of the latter section has the same size, and then applies a die 7 to respectively force the upper cover body 31 into the inner diameter of the front section 6 After 11 passes through the inner diameter 612 of the rear section, and the metal stretchability is applied to shape through the inner diameter 612 of the rear section, so that the upper surface of the upper body 31 forms a smooth surface (such as the fifth figure _B) ' milling machine to reduce Processing costs. Referring to FIG. 3D, the shaped upper cover main body 31 passes through the outer edge of the upper cover pipe 311 and the inner edge of the central through hole 312 through the CNC lathe, and a ring groove 3111 is formed on the periphery of the upper cover pipe 311 ( Such as | three to remove, to form - the top plug 311,: available - 〇 type % (known omitted) embedded, and the flat center hole 312 on the center through hole 3 table, (such as the third figure - E Please refer to the second figure-F, the upper cover field 31 is at the four corners 314 to form a complete upper cover 31, 7f holes, the upper cover perforation 314; therefore, know, slightly), the manufacturing is not described by the cover The method and the device thereof are manufactured quickly, and the wave of adding the I program and the waste is also provided. The center cone (1) and its periphery and the second mother 42 type column 511 (such as the fourth figure - B, c) The outer diameter of the 盍 盍 相当 is equivalent, and the bottom end of the 盍 相对 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = In the inner mold 21, the inner portion 21 _ wall, the inner portion 21 _ wall, the characteristic flow direction and the circular groove, and the inner cone (1) and the lower cover of the bottom portion of the inner mold J 21 Column 511, and a central slot hole 512 is formed in the lower cover main body 51 of the lower cover string, and the center cone 211 is taken by the center by the center cone 211, and the shape of the block 41 is formed on the lower cover main 201103658 angle/knife shape a geometrically shaped notch 514 (such as the fourth figure - b, c); 1 see the fifth figure, the fifth figure - A ~ c, a shaping mold 6, i inner mold 61 is set relative to the lower cover body 5 The shape is the same, and the inner diameter 612 of the rear section is connected, and the inner diameter of the front section is ^, so that the space of the inner diameter 612 of the rear section is equivalent to the same size of the lower jaw 51 (such as the fourth figure _F). After entering the front section inner diameter 611, the mouth section = today stretches through the rear section inner diameter 612 to shape, so that the periphery forms a smooth surface (such as the fifth figure does not require Dan Xian borrowing milling machine processing to reduce processing costs. Acid, ΐϊ ΐϊ ΐϊ — — — — — ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ ΐϊ = slot 5U center axially drilled through the cover perforation 5141 angle "cost of the finished product" also saves materials, eight η: borrowing the knowledge of the group skirt way' The cover 31 and the lower cover knife are not covered on both ends of the hydraulic cylinder (as is conventionally omitted), =, with the lower cover 51, the lower cover plug 511' is embedded with oil pressure = gold 2 ^ omitted) 'and then threaded through The upper cover perforation 314: two =, the lock, so that the screw head is placed in the geometrical missing groove 514 limit: 盍 2 ί::: can be ϋ 'to complete a hydraulic red combination (known omitted). The method of forming is fast, and the processing of the processing waste type is improved, and the direct processing is performed by direct stamping or forced extrusion. 'To achieve rapid production and reduce cost = one of ordinary skill in the art understands that without departing from the right: It will fall within the scope of protection of the present invention. The effect is changed, 201103658 V. Simple description of the schema: (1) Part of the diagram:
^ 一圖-A為習知應用鐵板火焰切割上蓋成型金屬素材 第一圖-B為習知上蓋成型步驟。 第二圖-C為習知上蓋平面透視圖。 =一圖-A為習知應用鐵板火焰切割下蓋成型金屬素 第二圖1為習知下蓋成型步驟。 第亡圖-C為習知下蓋平面透視圖。 第二圖為本發明上蓋成型裝置圖。 第二圖-A為本發明上蓋成型動作圖。 ，亡圖-B為本發明成型上蓋主體平面透視圖。 第二圖-C為本發明成型上蓋主體立體圖。 第二圖-D為本發明成型上蓋初胚加工面位置示意圖。 第^圖-E為本發明成型上蓋初胚平面示意圖。 第三圖-F為本發明完成上蓋成品立體圖。 第四圖為本發明下蓋成型裝置圖。 第四圖-A為本發明下蓋成型動作圖。 第四圖-B為本發明成型下蓋主體平面透視圖。 第四圖-C為本發明成型下蓋主體立體圖。 第四圖-D為本發明成型下蓋初胚加工面位置示意圖。 第四圖-E為本發明成型下蓋初胚平面示意圖。 第四圖-F為本發明完成下蓋成品立體圖。 第五圖為本發明整形模具裝置圖。 〇 0 第五圖-A為本發明整形上/下蓋主體動作圖。 第五圖-B為本發明整形後上蓋主體圖。 第五圖-C為本發明整形後下蓋主體圖。 (二）圖號部份： 上盘公模1 中心衝 母模2 内模21 11 201103658 中心錐211 金屬素材3 上蓋管柱311 環溝3111 上蓋塞柱311’ 上蓋穿孔314 下蓋公模4 下蓋主體51 中心槽孔512 _ 幾何形缺槽514 加工面513 下蓋51’ 内模61 後段内徑612 圓槽212 上蓋主體31 中心貫孔312 加工面313 平整中心貫孔312’ 上蓋31’ 幾何形衝塊41 下蓋管柱511 平整中心槽孔512’ 環溝5111 下蓋穿孔5141 整形整形模具6 前段内徑611 衝模7^ A picture-A is a conventional application of iron plate flame cutting upper cover forming metal material. The first figure-B is a conventional upper cover forming step. The second figure-C is a plan view of a conventional upper cover. = Figure-A is a conventional application of iron plate flame cutting under the cap forming metallurgy. Figure 2 is a conventional lower cap forming step. The first death map-C is a plan view of the lower cover. The second figure is a view of the upper cover forming apparatus of the present invention. The second figure-A is an operation diagram of the upper cover forming operation of the present invention. , 死图-B is a plan perspective view of the main body of the molded upper cover of the present invention. The second figure-C is a perspective view of the main body of the molded upper cover of the present invention. The second figure-D is a schematic view showing the position of the embossed processing surface of the formed upper cover of the present invention. Fig.-E is a schematic view showing the initial embryo plane of the molded upper cover of the present invention. The third figure-F is a perspective view of the finished product of the present invention. The fourth figure is a view of the lower cover forming device of the present invention. The fourth figure-A is a drawing operation diagram of the lower cover of the present invention. Fig. 4B is a plan perspective view of the main body of the molded lower cover of the present invention. The fourth figure-C is a perspective view of the main body of the molded lower cover of the present invention. The fourth figure-D is a schematic view showing the position of the initial processing surface of the formed lower cover of the present invention. The fourth figure-E is a schematic view of the initial embryo plane of the formed lower cover of the present invention. The fourth figure-F is a perspective view of the finished product of the lower cover of the present invention. The fifth figure is a diagram of the shaping mold device of the present invention. 〇 0 Fig. 5A is an action diagram of the main body of the upper/lower cover of the present invention. Fig. 5B is a main body view of the upper cover of the plastic body of the present invention. The fifth figure-C is a main body view of the lower cover of the invention after shaping. (2) Part number: Upper plate male die 1 Center punching die 2 Inner die 21 11 201103658 Center cone 211 Metal material 3 Upper cover pipe 311 Ring groove 3111 Upper cover plug 311' Upper cover perforation 314 Lower cover male mold 4 Cover body 51 Center slot 512 _ Geometry slot 514 Machining surface 513 Lower cover 51' Inner mold 61 Rear section inner diameter 612 Circular groove 212 Upper cover body 31 Center through hole 312 Machining surface 313 Leveling central through hole 312' Upper cover 31' Geometry Shaped block 41 Lower cover pipe column 511 Flat center hole 512' Ring groove 5111 Lower cover hole 5141 Plastic shaping mold 6 Front section inner diameter 611 Die 7