200948678 九、發明說明： 【發明所屬之技術領域】 本發明主要係揭示一種置物籃之製造方法，尤指可以 簡單且快速的將本體彎折出四個垂直的牆壁而形成有一開 口之結構的置物籃製造方法。 【先前技術】 Ο 請參照美國專利號第6, 718, 635號之「Method for making mesh containers」專利案，其屬於一種網狀容器 的製造方法’這個傳統的網狀容器製造方法是這樣進行 的：將一個第二網狀材料銲接結合在一個具有底部的第一 網狀材料的一側邊’然後彎折第二網狀材料；接著是將一 個第三網狀材料辞接結合在第一網狀材料的底部的另一側 邊，然後彎折第三網狀材料。 這個製造方法的問題是浪費工時，降低了生產效率， 〇 因為第二網狀材料與第三網狀材料在結合於第一網狀材料 的步驟是分開進行的，因此有改進的空間。 而且，第二網狀材料與第三網狀材料在彎折的步驟也 是分開進行的，因此這也有改進的空間。 除此之外’考慮到結構強度的要求時，彼此分離的第 二網狀材料（或第三網狀材料）與第一網狀材料之間，單 純的使用銲接結合所能提供的強度有限，特別是網狀材料 彼此之間的銲接面積相當的小，因此，這種網狀容器用來 I ' 容納物品的範圍就大大的被限制，所以製造方法仍有必要 5 200948678 改進。 有鏜於上述習知結構之缺失，本發明人乃發明出一種 置物藍之製造方法』，其係可克服上述習知結構之所有 【發明内容】 f% 本發θ 1物藍之製造方法』所欲解決之技術問題係 在於，提供-種同時料第—㈣與第二側壁的製造方 法丄達到節省工時與增加生產效率的優點。更進一步提 供-種在-次的衝壓過程中，同時彎折第一側壁與第二側 壁，並且完成同時彎折第三側壁與第四側壁的製造方法。 本發月&供種將第一片狀胚料與第二片狀胚料同時 結合在第三片狀胚料上的的製造方法，達到節省工時與辦 加生產效率的優點。 Q 發月提供種增加第一片狀胚料（或第二片狀胚料） 與第三片狀胚料之間結合強度的製造方法，使置物藍在第 一片狀胚料（或第二片狀胚料）與第三片狀胚料之間的結 ° 位結構強度提高，擴大置物籃容納物品的使用範圍。 其他目的、優點和本發明的新賴特性將從以下詳細的 描述與相關的附圖更加顯明。 【實施方式】 有關本發明所採用之技術、手段及其功效，兹舉一較 佳實施例並配合圖式詳述如後，此僅供說明之用，在專利 6 200948678 申請上並不受此種結構之限制。 為了方便說明，本發明採用矩形的置物藍作為實施例 予以表示其製造方法，但專利權的保護並不揭限於圖中所 示的形狀，置物籃也可以是用本發明的製造方法作成正方 形或多邊形。 參照圖一’本發明置物籃之製造方法包括有以下步驟： 準備材料：首先備妥一個矩形框條10 (如圖十二）， Ο 並且裁切出具有預定形狀之笫一片狀胚料21、第二片狀胚 料22、第二片狀胚料23，如圖二與圖三。在本實施例中， 第一、第二、第三片狀胚料21、22、23採用的是金屬網結 構。 第片狀胚料21具有一個呈矩形的第一側壁31，第 一側壁31於一側長邊彎折形成一個第一結合部25，使第 一側壁31與第一結合部25之間具有一個間隙g。該第一 D 結合部25相對於第一側壁31的彎折角度介於一百三十五 度至一百八十度之間。如圖三所示，第一結合部25與第一 侧壁31的截面呈橫向V字型。 一第二片狀胚料22具有一個呈矩形的第二側壁32，第 =側壁32於一側長邊彎折形成一個第二結合部24，使第 一32與第二結合部24之間具有-個間隙g。該第二 結合部24相對於第二側壁32的彎折角度介於一百三十五 度至一百八十度之間，使第二結合部24與第二側璧32的 截面呈橫向V字型。 第二片狀胚料烈具有一個呈矩形的底部35、一個呈 200948678 梯形且連接於底部35 —端的第三侧壁33及一個呈梯形且 連接於底部35另一端的第四側壁34 »底部35具有兩個相 互對應的長邊及兩個相互對應的短邊’底部35的兩個短邊 中之一連接於第三側壁33，底部35的另一個短邊連接於 第四側壁34。第三側壁33還裁切有一個缺口 28。 、 底部35的兩個長邊分別彎折形成一個接合部沈、2?，200948678 IX. Description of the Invention: [Technical Field] The present invention mainly discloses a method for manufacturing a storage basket, in particular, a structure that can simply and quickly bend a body into four vertical walls to form an opening structure. Basket manufacturing method. [Prior Art] Ο Refer to the "Method for making mesh containers" patent of U.S. Patent No. 6,718,635, which is a method of manufacturing a mesh container, which is a conventional method of manufacturing a mesh container. : welding a second mesh material to one side of the first mesh material having a bottom portion 'and then bending the second mesh material; then joining a third mesh material to the first mesh The other side of the bottom of the material is then bent over the third web material. The problem with this manufacturing method is that it wastes man-hours and reduces the production efficiency. 〇 Since the second web material and the third web material are separately separated in the step of bonding to the first web material, there is room for improvement. Moreover, the steps of bending the second web material and the third web material are also performed separately, so there is also room for improvement. In addition, when considering the requirements of structural strength, the strength between the second mesh material (or the third mesh material) separated from each other and the first mesh material, which can be provided by simply using welding, is limited. In particular, the welding area of the mesh materials is relatively small, and therefore, the range in which such mesh containers are used to accommodate articles is greatly limited, so that the manufacturing method is still necessary 5 200948678 improvement. In view of the lack of the above-mentioned conventional structure, the inventors have invented a method for manufacturing a storage blue, which overcomes all of the above-mentioned conventional structures. [Following the manufacturing method of the present invention. The technical problem to be solved is to provide a manufacturing method of the first-fourth and the second side wall to achieve the advantages of saving man-hours and increasing production efficiency. It is further provided that in the stamping process, the first side wall and the second side wall are bent at the same time, and a manufacturing method of simultaneously bending the third side wall and the fourth side wall is completed. The present invention provides a manufacturing method for simultaneously combining the first sheet-like blank and the second sheet-like blank on the third sheet-like blank to achieve the advantages of saving man-hours and increasing production efficiency. The Q month provides a manufacturing method for increasing the bonding strength between the first sheet-like billet (or the second sheet-like billet) and the third sheet-like billet, so that the storage blue is in the first sheet-like billet (or the second The strength of the knot structure between the sheet-like blank and the third sheet-like billet is increased, and the use range of the article basket to accommodate the article is expanded. Other objects, advantages and novel features of the invention will be apparent from [Embodiment] The technology, the means and the functions thereof used in the present invention are described in detail with reference to the accompanying drawings, which are for illustrative purposes only, and are not applicable to the application of Patent No. 6, 200948678. The limitations of the structure. For convenience of description, the present invention uses a rectangular storage blue as an embodiment to indicate its manufacturing method, but the protection of the patent is not limited to the shape shown in the drawings, and the storage basket may be squared or formed by the manufacturing method of the present invention. Polygon. Referring to Fig. 1 'the manufacturing method of the storage basket of the present invention comprises the following steps: preparing materials: first preparing a rectangular frame strip 10 (as shown in Fig. 12), and cutting a piece of blank piece 21 having a predetermined shape. The second sheet-like blank 22 and the second sheet-like blank 23 are as shown in FIG. 2 and FIG. In the present embodiment, the first, second, and third sheet-like blanks 21, 22, and 23 are made of a metal mesh structure. The first sheet-like blank 21 has a first side wall 31 having a rectangular shape, and the first side wall 31 is bent at one long side to form a first joint portion 25, such that the first side wall 31 and the first joint portion 25 have a Clearance g. The first D joint portion 25 has a bending angle with respect to the first side wall 31 of between one hundred and thirty-five degrees to one hundred and eighty degrees. As shown in Fig. 3, the first joint portion 25 and the first side wall 31 have a V-shaped cross section in the lateral direction. A second sheet-like blank 22 has a second side wall 32 having a rectangular shape. The second side wall 32 is bent at one side and formed with a second joint portion 24 so as to have a relationship between the first 32 and the second joint portion 24. - a gap g. The bending angle of the second joint portion 24 relative to the second side wall 32 is between one hundred and thirty-five degrees to one hundred and eighty degrees, and the cross section of the second joint portion 24 and the second side flange 32 is laterally V. Font type. The second sheet of billet has a rectangular bottom portion 35, a third side wall 33 having a 200948678 trapezoidal shape and connected to the bottom 35 end, and a fourth side wall 34 having a trapezoidal shape and connected to the other end of the bottom portion 35. One of the two short sides having two mutually corresponding long sides and two mutually corresponding short sides 'bottom 35 is connected to the third side wall 33, and the other short side of the bottom portion 35 is connected to the fourth side wall 34. The third side wall 33 is also cut with a notch 28. The two long sides of the bottom portion 35 are respectively bent to form a joint portion, 2?,
於此定義為第一接合部27與第二接合部26。該二接合部 26、27與底部35之間具有一個間隙g。該二接合部26、 27相對於底部35的彎折角度介於一百三十五度至一百八This is defined as the first joint portion 27 and the second joint portion 26. There is a gap g between the two joint portions 26, 27 and the bottom portion 35. The bending angle of the two joint portions 26, 27 with respect to the bottom portion 35 is between one hundred and thirty-five degrees to one hundred eight
十度之間，使該二接合部26、27與底部35的截面呈橫向 V字型。 D 參照圖四 接者將弟一片狀胚料21的第一結合部2 伸入第三片狀胚料23的底部35與第一接合部2?之間并 第二片狀胚料22的第二結合部24伸人第三片狀胚料2 的底部35與第二接合部26之間。由於前述結構都是呈杰 向V字型而具有_ ’故可以簡單的、快速的將第一、 二片狀胚料21、22勾固於第三片狀胚料23上，節省工時 之後利用衝壓機械90將第一、第二片狀胚料21、、 同時壓合於第三片狀胚料23，使第一片狀胚料Μ的第 胚料23的第一接合部27壓合㈣ 第側壁31與底部35之間，同時使第二片狀胚料㈣ -結合部24與第三片狀胚料23的第二接合部烈壓 於第二側壁32與底部35之間，形成彼此交疊壓合固定= -個本體2G結構。如此不但可確保第―、第二片狀胚剩 8 200948678 、22不會脫離第三片狀胚料23 ,更可以使第三片狀 23的底部35兩個長邊增加結構強度。而且 械90的上謂、下謂的運作，第 21、22是同時壓合於第三片狀胚料23，因此可以達到$ 工時，提高生產效率的優點。 Ο ❹ 細參照圖五’將本體2G置於用_折成形的衝麼 機械91中，上模9U的外輪廓相同於底部％而呈矩形， 下模912的周圍具有高低不同的第—階段913與第 914，下模912 6^心可供上模911進入。先將本體2〇置 於下模912上方，使第-階段913支標在第一側壁31與 二側壁32下方，然後進行第一次料作業，上模9ιι ^底 部35麼入下模912的中心，使本體2〇的第一側壁與第 二側壁32同時相對於底部35料形成垂直狀，如圖六與 圖七。接著使第二階段914支撐在第三側壁33與第四側壁 34下方，然後進行第二次騎作業，上模911將底部邪 麼入下模912的中心，使本體2〇的第三側壁33與第四側 壁34同時相對於底部35 f折形成垂直狀，如圖人與圖九。 可以理解到，第一次彎折作業是同時彎折第一側壁31 與第二側壁32，因此過程相當快速，解決了先前技術的問 題。而且，更進一步的優點是，前述第一彎折作業與第二 弯折作業可以在一次的衝壓過程中就可以同時被完成大 幅，縮短弯折加工的時間，免除了先前技術要重新置放網 狀谷器的動作’转省了模具歸零定位的繁項時間。 而彎折後的本體20形成一個籃子的離型，如圖十所示 200948678 者，這樣的作法是可以快速的將本體20彎折出四個垂直的 牆壁而形成有一開口 36之結構，不但節省工時，增加生產 效率’還可以提高產品良率’因此就可以降低成本。 接著進行第三次彎折作業，參照圖十一，梯形的第三 側壁33兩端分別彎曲形成一個轉角區域37，將這兩個^ 角區域37各自朝向第一側壁31、第二側壁32弯曲，使這 兩個轉角區域37各自的重疊在第一側壁31、第二側壁％ 〇 外側，並且結合在一起。本實施例中是利用銲接的方式將 第三侧壁33兩端的轉角區域37各自的銲接於第一側壁 31、第二側壁32。第四側壁34亦於兩端分別形成一個轉 角區域37，第四側壁34相同於第三側壁33的作法，故於 此不再加以資述。 入框：參照圖十二，將本體2〇的開口 36周緣彎折出 一個向外翻的翼部29，接著利用衝壓機械將框條1〇壓合 於本體20的翼部29，使框條1〇結合於本體2〇開口祁周 ◎緣處的翼部29上，如圖十三與圖十四所示。 凡成.接著修除毛邊之後即獲得一個置物籃30之完 成品’如圖十五。 物藍3〇的缺口 28處形成一握把，可供使用者的 *提起置物籃3〇。為了使握持更加舒適，可以在 結合—個護條U，這個護條11形狀相同於缺口 、:’步驟是彻衝壓機械將護條 11壓合於缺口 28 $笛：^步驟可以在折型步驟中的第二次彎折作業之後 人折作業之前進行，也可以在第三次脊折步驟之 200948678 後至入框㈣之前進行，只要不影響現場製錢程即可。 ΟBetween ten degrees, the cross sections of the two joint portions 26, 27 and the bottom portion 35 are laterally V-shaped. D. Referring to the figure four, the first joint portion 2 of the piece of billet 21 is projected between the bottom portion 35 of the third sheet-like billet 23 and the first joint portion 2? and the second sheet-like billet 22 The second joint portion 24 extends between the bottom portion 35 of the third sheet-like blank 2 and the second joint portion 26. Since the foregoing structures are all in the shape of a V-shaped shape, the first and second sheet-like blanks 21, 22 can be simply and quickly hooked on the third sheet-like blank 23, saving time after work. The first and second sheet-like blanks 21 are simultaneously pressed against the third sheet-like blank 23 by the press machine 90, and the first joint portion 27 of the first billet 23 of the first sheet-like billet is pressed. (4) between the side wall 31 and the bottom portion 35, and at the same time, the second joint portion of the second sheet-like billet (4)-joining portion 24 and the third sheet-like billet 23 is pressed between the second side wall 32 and the bottom portion 35 to form They are overlapped and fixed to each other = - a body 2G structure. This not only ensures that the first and second sheet-like embryos 8 200948678, 22 do not leave the third sheet-like blank 23, but also increases the structural strength of the two long sides of the bottom portion 35 of the third sheet 23. Moreover, the operation of the upper and lower sides of the machine 90, the 21st and the 22nd are simultaneously pressed to the third sheet-like blank 23, so that the work time can be increased and the production efficiency can be improved. Ο 细 Referring to Figure 5, the body 2G is placed in a punching machine 91. The outer contour of the upper mold 9U is the same as the bottom portion and is rectangular. The lower portion of the lower mold 912 has a different stage 913. With the 914th, the lower die 912 6^ is available for the upper die 911 to enter. First, the body 2〇 is placed above the lower mold 912, so that the first stage 913 is under the first side wall 31 and the two side walls 32, and then the first material operation is performed, and the upper mold 9 ι ^ bottom 35 is inserted into the lower mold 912. Center, the first side wall and the second side wall 32 of the body 2 are simultaneously formed perpendicular to the bottom portion 35, as shown in FIG. 6 and FIG. Then, the second stage 914 is supported under the third side wall 33 and the fourth side wall 34, and then a second riding operation is performed. The upper mold 911 places the bottom portion into the center of the lower mold 912, so that the third side wall 33 of the body 2〇 Simultaneously with the fourth side wall 34, the vertical shape is folded relative to the bottom portion 35f, as shown in FIG. It can be understood that the first bending operation is to simultaneously bend the first side wall 31 and the second side wall 32, so that the process is quite fast, solving the problems of the prior art. Moreover, a further advantage is that the first bending operation and the second bending operation can be completed at the same time in one stamping process, shortening the bending processing time, and eliminating the prior art to re-lay the net. The action of the grain-shaped device 'transfers the complicated time of the zero return positioning of the mold. The bent body 20 forms a basket release type, as shown in FIG. 10, 200948678, in such a manner that the body 20 can be quickly bent out of four vertical walls to form an opening 36 structure, which not only saves Working hours, increasing productivity can also increase product yields, thus reducing costs. Next, a third bending operation is performed. Referring to FIG. 11, the two ends of the trapezoidal third side wall 33 are respectively bent to form a corner area 37, and the two corner areas 37 are bent toward the first side wall 31 and the second side wall 32, respectively. The two corner regions 37 are each overlapped on the first side wall 31, the second side wall % 〇, and joined together. In this embodiment, the corner regions 37 at both ends of the third side wall 33 are welded to the first side wall 31 and the second side wall 32 by welding. The fourth side wall 34 also has a corner region 37 formed at both ends, and the fourth side wall 34 is identical to the third side wall 33, and therefore will not be described. Into the frame: Referring to Figure 12, the periphery of the opening 36 of the body 2〇 is bent out of an outwardly turned wing 29, and then the frame 1 is pressed against the wing 29 of the body 20 by a punching machine to make the frame 1〇 is coupled to the wing portion 29 at the edge of the opening of the body 2, as shown in FIG. 13 and FIG. Fan Cheng. Then, after trimming the burrs, the finished product of the basket 30 is obtained as shown in Fig. 15. The gap of the object blue 3〇 forms a grip at the 28th position for the user to lift the storage basket 3〇. In order to make the grip more comfortable, it can be combined with a strip U, which is the same shape as the notch, and the step is: the step is to press the strip 11 to press the strip 11 to the notch 28 $ flute: ^ step can be in the fold The second bending operation in the step is performed before the folding operation, or may be performed after the third bending step of 200948678 until before entering the frame (four), as long as it does not affect the on-site manufacturing process. Ο
在進行折型的步驟之前，在第-、第二片狀胚料21 ’ 22墨合於第三片狀胚料23，形成彼此交㈣合固定的 本趙20結構之後，還可以進行_道末端銲接的作業 以點銲的方式，將交疊塵合固定的第一結合部25與第^ 合部27的兩鱗接結合，將交錢合固定的第二結合 24與第二接合部26的兩端銲接結合，如此可 ，30底部35四端角的結構強度，又可以防止交叠^^ 疋的部位發生剝離的缺點。 由前述製造方法的說明，可以理解在準備材料的步 中’也可以是這樣進行··首先備妥一個矩形框條ig，並且 裁切出具有預定形狀的一個本體2〇a結構，如圖十六。 這個本體20a結構具有一個呈矩形的底部35及分別 接於底部35周邊的第一側壁31、第二側壁32、第三側壁 33與第四側壁34。第一側壁31與第二側壁32皆呈矩形且 相對的連接在底部35的兩個長邊，第三㈣33與第四側 壁34皆呈梯形且相對的連接在底部％的兩個短邊。這個 單-片狀的本體2Ga結構在裁切之後，可以直接進行折型 f驟’這樣的作法可以節省工時，增加生產效率而且單 一片狀的本體2〇a也具有良好均一的結構強度。 惟上所述者，僅為本發明之較佳實施例而已當不能 =之限定本發明實施之範圍，故舉凡數值之變更或等效元 件之置換，或依本發明申請專利範圍所作之均等變化與修 飾，皆應仍屬本發明專利涵蓋之範疇。 11 200948678 【圖式簡單說明】 圖一：為本發明置物籃之製造方法之流程圖。 圖為本發明置物籃之製造方法之準備材料步驟示意圖。 圖二.為本發明置物籃之製造方法之準備材料步驟示意圖。 圖四：為本發明置物籃之製造方法之準備材料步驟示意圖。 圖五·為本發明置物籃之製造方法之折型步驟示意圖。 圖六.為本發明置物籃之製造方法之折型步驟示意圖。 圖七：為本發明置物籃之製造方法之折型步驟示意圖。 圖八：為本發明置物籃之製造方法之折型步驟示意圖。 圖九：為本發明置物籃之製造方法之折型步驟示意圖。 圖十：為本發明置物籃之製造方法之折型步驟示意圖。 圖十一：為本發明置物籃之製造方法之折型步驟示意圖。 圖十二：為本發明置物籃之製造方法之入框步驟示意圖。 圖十三：為本發明置物籃之製造方法之入框步驟示意圖。 圖十四：為本發明置物籃之製造方法之入框步驟示意圖。 圖十五··為本發明置物籃之製造方法之完成品示意圖。 圖十六：為本發明置物籃之製造方法之本體的不同實施例 示意圖。 附件：為美國專利號第6, 718, 635號專利案。 【主要元件符號說明】 1〇框條 11 護條 20本體 本體 12 200948678 21 第一片狀胚料 22 第二片狀胚料 23 第三片狀胚料 24 第二結合部 25 第一結合部 26 第二接合部 27 第一接合部 28 缺口 29 翼部 30 置物籃 31 第一侧壁 32 第二侧壁 33 第三側壁 34 第四侧壁 35 底部 36 開口 37 轉角區域 90 衝壓機械 901 上模 902 下模 91 衝壓機械 911 上模 912 下模 913 第一階段 914 第二階段 g 間隙Before the step of performing the folding, after the first and second sheet-like blanks 21'22 are inked to the third sheet-like blank 23, and the structure of the ZHAO 20 which is fixed to each other is formed, the _ road can also be carried out. The end welding operation combines the first joint portion 25 that overlaps the dust and the two scales of the second joint portion 27 in a spot welding manner, and the second joint 24 and the second joint portion 26 that are fixed by the paying and fixing are combined. The two ends are welded and combined, so that the structural strength of the four bottom corners of the bottom portion 35 can prevent the peeling of the overlapping portions. From the description of the foregoing manufacturing method, it can be understood that in the step of preparing the material, 'this can also be done. · First, a rectangular frame strip ig is prepared, and a body 2〇a structure having a predetermined shape is cut out, as shown in FIG. six. The body 20a has a bottom portion 35 having a rectangular shape and a first side wall 31, a second side wall 32, a third side wall 33 and a fourth side wall 34 respectively connected to the periphery of the bottom portion 35. The first side wall 31 and the second side wall 32 are both rectangular and oppositely connected to the two long sides of the bottom portion 35. The third (four) 33 and the fourth side wall 34 are both trapezoidal and oppositely connected to the two short sides of the bottom portion. This single-piece body 2Ga structure can be directly subjected to the folding process after cutting, which can save man-hours, increase production efficiency, and the single-piece body 2〇a also has a good uniform structural strength. It is to be understood that the scope of the present invention is not limited to the preferred embodiment of the present invention, and therefore, variations of numerical values or substitution of equivalent elements, or equivalent variations in accordance with the scope of the present invention. And modifications should still fall within the scope of the invention patent. 11 200948678 [Simple description of the drawings] Figure 1: Flow chart of the manufacturing method of the storage basket of the present invention. The figure is a schematic diagram of the steps of preparing materials for the manufacturing method of the storage basket of the present invention. Figure 2 is a schematic view showing the steps of preparing materials for the manufacturing method of the storage basket of the present invention. Figure 4 is a schematic view showing the steps of preparing materials for the manufacturing method of the storage basket of the present invention. Figure 5 is a schematic view showing the folding steps of the manufacturing method of the storage basket of the present invention. Figure 6. Schematic diagram of the folding steps of the manufacturing method of the storage basket of the present invention. Figure 7 is a schematic view showing the folding steps of the manufacturing method of the storage basket of the present invention. Figure 8 is a schematic view showing the folding steps of the manufacturing method of the storage basket of the present invention. Figure 9 is a schematic view showing the folding steps of the manufacturing method of the storage basket of the present invention. Figure 10 is a schematic view showing the folding steps of the manufacturing method of the storage basket of the present invention. Figure 11 is a schematic view showing the folding steps of the manufacturing method of the storage basket of the present invention. Figure 12 is a schematic view showing the steps of the method of manufacturing the storage basket of the present invention. Figure 13 is a schematic view showing the steps of the method of manufacturing the storage basket of the present invention. Figure 14 is a schematic view showing the steps of the method of manufacturing the storage basket of the present invention. Fig. 15 is a schematic view of the finished product of the manufacturing method of the storage basket of the present invention. Figure 16 is a schematic view showing different embodiments of the body of the manufacturing method of the storage basket of the present invention. Attachment: U.S. Patent No. 6,718,635. [Main component symbol description] 1 frame bar 11 bead 20 body body 12 200948678 21 first sheet material 22 second sheet material 23 third sheet material 24 second joint portion 25 first joint portion 26 Second joint portion 27 first joint portion 28 notch 29 wing portion 30 basket 31 first side wall 32 second side wall 33 third side wall 34 fourth side wall 35 bottom portion 36 opening 37 corner area 90 stamping machine 901 upper mold 902 Lower die 91 stamping machine 911 upper die 912 lower die 913 first stage 914 second stage g gap
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