200945972 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種裝配裝置’尤指一種印刷電路板之 定位銷裝配裝置，其可準確地在印刷電路板的基板上安裝 定位銷’隨後的絕緣層、導體層等層結構可依序藉由定^ 銷的導引而精確對位疊合在基板上。 【先前技術】 印刷電路板大多為多層板結構，由於主要由複數銅製 的導體層以及環氧化物絕緣層相互層叠而《，並且導 之中可經由蝕刻及電鍍等製程而忐拟女 聚程而成形有電路，當進行印刷 電路板的層疊製程時，係會以-導體層作為基板，並且透 過-定位銷m统對基板上的二^位孔以垂直 二後續欲疊合在該基板上的導體層及 =自具有二疋位孔而可穿套在定位銷上，藉由 導引順利地疊合在基板上。 鋼的 ❹ 現有的定位銷裝配系統係在一工作台上机 組裝配裝置，各裝配裝置上設置有一叹 〉、兩 連接有-受氣壓缸連動而可上下作動:::套== «底端以螺牙接合方式設置有-可㈣的 = 筒底端貫穿形成有一出銷口，在 门導引疋位 進銷孔。 又位缚—侧形成有— 當裝配裝置對基板的定位孔設置定位 疋位筒的出銷口對準基板上的定位孔，接著裝配裝置1= 4 200945972 含有複數定位銷的餘藏室斜签、* u 卿至對者進銷孔釋放一定位銷 定位筒之中，該定位銷順墊、、& 守引 丨貝勢滑入出銷口而與頂針對 直線，最後氣壓缸運作令馆私a 7頂針向下衝擊定位銷，將定位雜 打入基板的定位孔之内以&士疋<勒 門乂凡成定位銷的安插程序。 然而’上述定位銷的裝配裝置具有多項缺點。 當操 可能 導致 首先，由於頂針以螺鎖方式設置在頂針套管上 作人員更換頂針而重新將頂針螺鎖入頂針套管内時 發生内、外螺牙以歪斜方人 ❹ '又5的不正確螺鎖狀態， 頂針與頂針套管無法呈一直線， 、’ 自…、'而然頂針無法以精準 的垂直狀態撞擊定位銷，此導致定 凡守级疋位銷以歪斜狀態衝擊基 板的定位孔’造成定位孔有箭靶 另前祀烙孔破現象，造成機鑽後 整面性孔偏’即是定位孔遭不當擴大，‘ +…7 思个田擴大，如此定位銷將無法 精準的設置在基板的特定位置上，其後沿著定位銷層疊於 基板的其他導體層或是絕緣層亦無法精確與基板對位，最 終導致印刷電路板的報廢。 此外’裝配系統作業完畢後，可能在導引定位筒内殘 留有定位銷，而在下一次作業時，操作人員可能疏柬 定位筒内仍存有定位銷的狀況，導致裝配裝置啟_一 時間將另-根定位鎖導人導^位筒心此時兩根定位銷 相互干擾而無法與頂針呈—直線，最後頂針衝撞歪斜的定 位銷導致定位鎖不正確的設置在基板上，甚至造成定位鎖 卡死在導引定位筒内，進一步造成導引定位筒損毁。 【發明内容】 本發明人根據傳統定位銷裝配裝置作業時不易精確裝 5 200945972 配定位銷的缺點，改良其不足與缺失，進而發明出-種印 刷電路板之定位銷裝配裝置。 本！X明之主要目的係提供一種印刷電路板之定位銷裝 配裝置’其可精確地將定位銷裝配在印刷電路板的基板 •7後續層疊於基板上的導體層或絕緣層等可精確地與 基板對位，提高印刷電路板良率。 、 ^上述目的，係令前述印刷電路板之定位銷裝 置包含有： ❹ ❹ 一機殼，其上設置有一氣壓缸； 一外官’係為中空，且設置在氣壓缸下； 頂^套管’係為中空，與氣壓紅連接而位於外管内， 該頂針套管可係受氣屨知1 氣壓缸連動而可上下移動以便可衝擊一 定位銷’在頂針套管内設置有-磁吸元件； :頂針’係以可拆卸方式設置在頂針套管的下端内， 且可受磁吸7〇件吸引而固定在頂針套管上； 一導引定位筒，係呈漏斗狀，穿套在頂針套管下方而 圍繞包覆頂針，在導引定下方而 端形成有一對齊頂針的出 銷孔在導引疋位筒―㈣成有—進鎖孔，藉此 透過進銷孔而進入導引玄 、定位銷 導引疋位疴並且順勢滑入出銷孔之中. -定位銷辨識裝置，錢置在機殼上， ’ 筒連接’判斷導引定位筒内是否有定位銷的存在。 藉由上述技術手段，頂針套管内的磁吸元件可取代傳 統裝配裝置的螺牙杜糂；π * ± 于J取代傳 Η去迅、亲叔知 速地將頂針安裝在頂針套管200945972 IX. INSTRUCTIONS OF THE INVENTION: TECHNICAL FIELD The present invention relates to an assembly device, particularly a locating pin assembly device for a printed circuit board, which can accurately mount a locating pin on a substrate of a printed circuit board. The layer structure of the insulating layer, the conductor layer and the like can be accurately aligned on the substrate by the guiding of the pin in sequence. [Prior Art] The printed circuit board is mostly a multi-layer board structure, and the conductor layer and the epoxide insulating layer are mainly laminated on each other, and the process can be simulated by etching and plating. Forming a circuit, when performing a lamination process of the printed circuit board, the conductor layer is used as the substrate, and the through-positioning pin m is integrated with the two holes on the substrate to be vertically placed on the substrate. The conductor layer and the self-carrying hole can be put on the positioning pin and can be smoothly superposed on the substrate by the guiding. Steel ❹ The existing locating pin assembly system is a unit assembly on a workbench. Each assembly device is provided with a sigh, two connections - and can be actuated up and down by the pneumatic cylinder:::set== «bottom The screw end is provided with a - (4) = the bottom end of the cylinder is formed with a pin-out opening, and the pin guide hole is introduced at the door. Also stipulated—the side is formed — when the assembly device is positioned on the positioning hole of the substrate, the output pin of the positioning cylinder is aligned with the positioning hole on the substrate, and then the assembly device 1 = 4 200945972 , * u Qing to the opponent's pinhole release a positioning pin positioning cylinder, the positioning pin is smooth, and & 丨 丨 势 sliding into the outlet and the top against the line, and finally the pneumatic cylinder operation a 7 thimble impacts the positioning pin downwards, and the positioning miscellaneous is inserted into the positioning hole of the substrate to insert the positioning pin of the & However, the assembly device of the above locating pin has a number of disadvantages. When the operation may lead to the first, because the thimble is screwed on the thimble sleeve for the person to replace the thimble and the thimble is screwed into the thimble sleeve again, the inner and outer threads are twisted. In the screw lock state, the thimble and the thimble sleeve cannot be in a straight line, 'from...,' and the thimble cannot strike the locating pin in a precise vertical state, which results in the locating hole of the slanted squat pin impinging on the substrate in a skewed state. The positioning hole has an arrow target and the front hole is broken, which causes the whole hole of the machine to be deflected. That is, the positioning hole is improperly enlarged. '+...7 thinks that the field is enlarged, so the positioning pin cannot be accurately set. At a specific position of the substrate, other conductor layers or insulating layers laminated on the substrate along the positioning pins are not accurately aligned with the substrate, which eventually leads to the scrapping of the printed circuit board. In addition, after the assembly system is completed, the positioning pin may remain in the guiding positioning cylinder, and in the next operation, the operator may have the positioning pin still in the positioning cylinder, causing the assembly device to start. Another-root positioning lock guides the position of the tube. At this time, the two positioning pins interfere with each other and cannot be linear with the thimble. Finally, the thimble collides with the skewed positioning pin, causing the positioning lock to be incorrectly disposed on the substrate, or even causing the positioning lock. The card is stuck in the guiding positioning cylinder, which further causes the guiding positioning cylinder to be damaged. SUMMARY OF THE INVENTION The inventors have invented the locating pin assembly device of the printed circuit board according to the shortcomings of the conventional positioning pin assembly device, which is not easy to accurately mount 5 200945972 with the positioning pin, and to improve its deficiency and lack. this! The main purpose of the invention is to provide a locating pin assembly device for a printed circuit board, which can accurately mount a locating pin on a substrate of a printed circuit board, and a conductor layer or an insulating layer which is subsequently laminated on the substrate can be accurately aligned with the substrate. Bit, improve printed circuit board yield. The above purpose is to cause the locating pin device of the printed circuit board to include: ❹ ❹ a casing on which a pneumatic cylinder is disposed; an external officer is hollow and disposed under the pneumatic cylinder; 'The system is hollow, connected to the air pressure and located in the outer tube. The thimble sleeve can be moved by the air cylinder and can be moved up and down so as to impact a positioning pin. The magnetic element is disposed in the thimble sleeve; The thimble is detachably disposed in the lower end of the thimble sleeve and is attracted to the thimble sleeve by the magnetic attraction member 7; a guiding positioning cylinder is funnel-shaped and is placed over the thimble sleeve Bottom and surrounding the ejector pin, a pin hole for aligning the thimble is formed at the end of the guide, and the pin hole of the aligning pin is guided to the (4) into the locking hole, thereby entering the guiding hole through the pin hole and positioning The pin guides the clamp and slides into the outlet hole. - The positioning pin identification device, the money is placed on the casing, and the 'cartridge connection' determines whether there is a positioning pin in the guide positioning cylinder. By the above technical means, the magnetic element in the thimble sleeve can replace the threaded cuckoo of the conventional assembly device; π * ± replaces the J, and the thimble is mounted on the thimble casing.
上或者迅速拆卸頂钻，并B 並且避免以傳統螺鎖結構固定頂針 200945972 而造成頂針歪斜進— 步導致印刷電路板基板上的箭靶形孔 破狀況，此外，中a ^ 疋位銷辨識裝置可辨識定位銷是否存在於 導引定位筒内，甚古〜 、 — 右有疋位銷存在’則避免機殼上的饋料裝 定4銷饋入導引定位筒内，藉此可有效避免導引定位 筒内存有兩根以上的定位銷而導致頂針無法精準撞擊定位 銷的問題。 =述定位銷辨識裝置具有—主控電路、—訊號發射器、 。。訊號接收器、二訊號傳輸線，該訊號發射器與訊號接收 n u控電路相連接’該等訊號傳輸線係分別與訊號發 射器及訊號接收器相連接，且兩訊號傳輸線的末端係分別 插設於導引定位筒内而位於出銷孔的兩相對側，當沒有定 位銷位於出銷孔内時，兩訊號傳輸線末端之間的訊號傳遞 路徑暢通而可令訊號由一訊號傳輸線傳遞到另一訊號傳輸 線，田出銷孔内有定位銷時，兩末端之間的訊號傳輸路線 被定位銷阻斷而令訊號無法傳遞。 月1j述δί1號發射器以及訊號接收器係分別為光訊號發射 器以及光訊號接收器，該等訊號傳輸線係為光纖而可傳遞 以光波形式發送的訊號。 前述機殼上設置有一饋料裝置，該饋料裝置係相鄰該 導引定位筒的進銷孔，且受主控電路控制，主控電路判斷 導引定位筒内沒有定位銷時則令饋料裝置對導引定位筒饋 送定位銷。 前述磁吸元件係為一永久磁鐵。 前述磁吸元件係為一非永久磁鐵。 7 200945972 前述頂針係為金屬製。 【實施方式】 清參照第一與第二Α圖，本發明係主要提供一種印刷 電路板之定位銷裝配裝置，可以複數個裝配裝置安裝在一 工作台（90)上來形成一印刷電路板之定位銷裝配系統。 該定位銷裝配裝置包含有：一機殼（10)、一外管（70)、 一頂針套官（20)、一頂針（3〇)、一導引定位筒（4〇)、一饋料 裝置（13)、一定位銷辨識裝置（5〇)。 該機设（10)，其正面設置有一向前突伸的固定支架 (11)，固定支架（11)上設置有一固定支架（11)。 該外管（70)係為中空，且設置在氣壓缸（12)下。 請參照第五及六圖，該頂針套管（2〇)係為中空而可具 有一安裝孔（21)，與氣壓缸（12)連接而位於外管（7〇)内該 頂針套管（20)可係受氣壓缸（1 2)連動而可上下移動以便可 衝擊一定位銷（P)，在頂針套管（2〇)内設置有一磁吸元件 (22)，該磁吸元件（22)可為永久磁鐵或是非永久磁鐵。 清進一步參照第三A、三B及四圖，該頂針（3〇)可為 金屬製，係以可拆卸方式設置在頂針套管（2〇)安裝孔 的下端内，且可受磁吸元件（22)吸引而固定在頂針套管⑽） 上，頂針（30)底端形成有一細長的撞擊部（31)以便可撞擊 定位銷（P) ’將疋位銷（P)打入一印刷電路板基板的定 位孔内。 該導引定位筒（4G)該係呈漏斗狀，穿套在頂針套管（2〇) 下方而圍繞包覆頂針（3〇)，在導引定位筒（4〇)底端形成有 200945972 一對齊頂針（30)的出銷孔（42)，在導引定位筒（4〇)一側形成 有一進銷孔（45),藉此供定位銷（P)透過進銷孔（45)而進入 導引定位筒（40)並且順勢滑入出銷孔（42)之中。 該饋料裝置（13)係設置在機殼（1〇)上，該饋料裝置（13) 係相鄰該導引定位筒（4〇)的進銷孔（45)，且與機殼（10)内的 定位銷儲存室相連通。 該定位銷辨識裝置（5〇)係設置在機殼（1 〇)上，且與導 引定位筒（4〇)及饋料裝置（13)連接，判斷導引定位筒（40)内 © 是否有定位銷（p)的存在，主控電路（55)判斷導引定位筒内 (40)沒有定位銷（p)時則控制饋料裝置（13)對導引定位筒（4〇) 饋送定位銷（P)。 請進一步參照第二B圖，在本發明較佳實施例之中， 該定位銷辨識裝置（5〇)具有一主控電路（55)、一訊號發射 器（53)、一訊號接收器（54)、二訊號傳輸線（51)(52)，該訊 號發射器（53)與訊號接收器（54)係與主控電路（55)相連接， 該等訊號傳輸線（51)(52)係分別與訊號發射器（53)及訊號接 © 收器（54)相連接’且兩訊號傳輸線（51)(52)的末端係分別插 設於導引定位筒（4〇)内而位於出銷孔（42)的兩相對側，當 沒有定位銷（P)位於出銷孔（42)内時，兩訊號傳輸線（51)(52) 末端之間的訊號傳輸路徑暢通而可令訊號由一訊號傳輸線 (51 )(52)傳遞到另一訊號傳輸線，當出銷孔（42)内有定位銷 (P)時’兩末端之間的訊號傳輸路線被定位銷（p)阻斷而令 訊號無法傳遞。 較佳者’該訊號發射器（53)以及訊號接收器（54)係分 9 200945972 別為光訊號發射器以及光訊號接收器，該等訊號傳輸線係 為光纖而可傳遞以光波形式發送的訊號。 較佳者，機殼（10)的固定支架（11)上可有二掛勾（15)， 在導引定位筒（40)兩側亦具有二掛勾（45)，兩彈簧（6〇)分別 勾設於固定支架（11)與導引定位筒（40)的掛勾（15)(45)上藉 此穩固定位導引定位筒（4〇)。 藉由上述技術手段，頂針套管（2〇)内的磁吸元件（22) 了取代傳統裝配裝置的螺牙結構而可快速地將頂針（3〇)安 〇 裝在頂針套管（20)上或者迅速拆卸頂針（3〇)，並且避免以 傳統螺鎖結構固定頂針（3〇)而造成頂針（3〇)歪斜進一步導 致印刷電路板基板上的箭靶形孔破狀況，此外，定位銷辨 識裝置（50)可辨識定位銷（p)是否存在於導引定位筒 内，若有定位銷（P)存在，則避免機殼（10)上的饋料裝置（13) 將疋位鎖（P)饋人導引定位筒（4Q)内，藉此可有效避免導引 定位筒(40)内存有兩根以上的定位銷(p)而導致頂針(3〇)無 法精準撞擊定位銷（P)的問題。 © 【圖式簡單說明】 第圖係本發明設置於一工作台上的實施狀態圖。 第二A圖係本發明立體放大視圖。 第一 B圖係本發明定位銷辨識裝置之示意圖。 第三A圖係本發明側面放大局部剖視圖。 第三B圖係根據第三A圖之正面放大視圖。 第四圖係接續第三A圖之操作示意圖。 第五圖係本發明頂針套管與頂針之組裝圖。 200945972 第六圖係本發明頂針套管與頂針之分解圖。 【主要元件符號說明】Up or quickly disassemble the top drill, and B and avoid fixing the thimble 200945972 with the traditional screw-lock structure, causing the thimble to be skewed into the step causing the arrow-shaped hole on the printed circuit board substrate to break, and in addition, the middle a ^ pin identification device It can be identified whether the locating pin exists in the guiding positioning cylinder, and the old 〜~, — the right 疋 position pin exists, 'to avoid feeding the feeding pin on the casing and feeding the 4 pin into the guiding positioning cylinder, thereby effectively avoiding There are two or more locating pins in the guide positioning cylinder, which causes the thimble to not accurately hit the locating pin. = The positioning pin identification device has a - main control circuit, a signal transmitter, . . a signal receiver and a two-signal transmission line, the signal transmitter is connected to the signal receiving nu control circuit. The signal transmission lines are respectively connected to the signal transmitter and the signal receiver, and the ends of the two signal transmission lines are respectively inserted in the guide In the positioning cylinder and on opposite sides of the outlet hole, when no positioning pin is located in the outlet hole, the signal transmission path between the ends of the two signal transmission lines is smooth, and the signal can be transmitted from one signal transmission line to another signal transmission line. When there is a positioning pin in the pinhole of the field, the signal transmission route between the two ends is blocked by the positioning pin and the signal cannot be transmitted. The δί1 transmitter and the signal receiver are respectively an optical signal transmitter and an optical signal receiver, and the signal transmission lines are optical fibers and can transmit signals transmitted in the form of light waves. The feeding device is provided with a feeding device adjacent to the feeding hole of the guiding positioning cylinder, and is controlled by the main control circuit, and the main control circuit determines that there is no positioning pin in the guiding positioning cylinder The feeding device feeds the positioning pin to the guiding positioning cylinder. The magnetic element is a permanent magnet. The magnetic element is a non-permanent magnet. 7 200945972 The aforementioned thimble is made of metal. [Embodiment] Referring to the first and second drawings, the present invention mainly provides a locating pin assembly device for a printed circuit board, which can be mounted on a work table (90) to form a printed circuit board. Pin assembly system. The positioning pin assembly device comprises: a casing (10), an outer tube (70), a thimble sleeve (20), a thimble (3 〇), a guiding positioning cylinder (4 〇), a feeding material The device (13) and a positioning pin identification device (5〇). The machine is provided with a fixing bracket (11) protruding from the front side, and a fixing bracket (11) is arranged on the fixing bracket (11). The outer tube (70) is hollow and is disposed under the pneumatic cylinder (12). Referring to Figures 5 and 6, the thimble sleeve (2〇) is hollow and can have a mounting hole (21) connected to the pneumatic cylinder (12) and located in the outer tube (7〇). 20) can be moved up and down by the pneumatic cylinder (12) so as to be able to impact a positioning pin (P), and a magnetic element (22) is disposed in the thimble sleeve (2〇), the magnetic element (22) ) can be a permanent magnet or a non-permanent magnet. Further referring to the third A, third B and fourth figures, the thimble (3 〇) can be made of metal and detachably disposed in the lower end of the thimble bushing (2 〇) mounting hole, and can be subjected to the magnetic absorbing element (22) being attracted and fixed on the thimble sleeve (10)), the ejector pin (30) is formed with an elongated impact portion (31) at the bottom end thereof so as to be able to strike the positioning pin (P) to drive the clamp pin (P) into a printed circuit Inside the positioning hole of the board substrate. The guiding positioning cylinder (4G) is in the shape of a funnel, is sleeved under the thimble sleeve (2〇) and surrounds the thimble (3〇), and the bottom end of the guiding positioning cylinder (4〇) is formed with 200945972. The output pin hole (42) of the thimble (30) is aligned, and an input pin hole (45) is formed on one side of the guide positioning cylinder (4), whereby the positioning pin (P) is inserted through the pin hole (45). The positioning cylinder (40) is guided and slides into the outlet hole (42). The feeding device (13) is disposed on the casing (1), and the feeding device (13) is adjacent to the feeding hole (45) of the guiding positioning cylinder (4〇), and the casing ( 10) The positioning pin storage chamber is connected. The positioning pin identification device (5〇) is disposed on the casing (1〇), and is connected with the guiding positioning cylinder (4〇) and the feeding device (13) to determine whether the guiding positioning cylinder (40) is © With the presence of the positioning pin (p), the main control circuit (55) determines that the guiding device (13) feeds the positioning positioning cylinder (4〇) when there is no positioning pin (p) in the guiding positioning cylinder (40). Pin (P). Referring to FIG. 2B, in a preferred embodiment of the present invention, the positioning pin identification device (5〇) has a main control circuit (55), a signal transmitter (53), and a signal receiver (54). And a two-signal transmission line (51) (52), wherein the signal transmitter (53) and the signal receiver (54) are connected to the main control circuit (55), and the signal transmission lines (51) (52) are respectively associated with The signal transmitter (53) and the signal receiver (54) are connected to each other and the ends of the two signal transmission lines (51) (52) are respectively inserted into the guiding positioning cylinder (4〇) and located at the outlet hole ( On the opposite sides of 42), when no positioning pin (P) is located in the pin hole (42), the signal transmission path between the ends of the two signal transmission lines (51) (52) is unblocked to allow the signal to be transmitted by a signal transmission line ( 51) (52) is transmitted to another signal transmission line. When there is a positioning pin (P) in the outlet hole (42), the signal transmission route between the two ends is blocked by the positioning pin (p) and the signal cannot be transmitted. Preferably, the signal transmitter (53) and the signal receiver (54) are divided into 9 200945972, which are optical signal transmitters and optical signal receivers, and the signal transmission lines are optical fibers and can transmit signals transmitted in the form of light waves. . Preferably, the fixing bracket (11) of the casing (10) has two hooks (15), and two hooks (45) are also arranged on both sides of the guiding positioning cylinder (40), and two springs (6 inches) They are respectively hooked on the hooks (15) (45) of the fixing bracket (11) and the guiding positioning cylinder (40) to thereby guide the positioning cylinders (4〇). By the above technical means, the magnetic element (22) in the thimble casing (2) can quickly mount the thimble (3 〇) in the thimble casing (20) instead of the screw structure of the conventional assembly device. Upper or quick disassembly of the thimble (3〇), and avoiding the thimble (3〇) fixed by the conventional screw-locking structure, causing the thimble (3〇) skew to further cause the arrow-shaped hole on the printed circuit board substrate to break, and in addition, the positioning pin The identification device (50) can recognize whether the positioning pin (p) exists in the guiding positioning cylinder, and if there is a positioning pin (P), the feeding device (13) on the casing (10) is prevented from being clamped ( P) feeding the guiding cylinder (4Q), thereby effectively avoiding two or more positioning pins (p) in the guiding positioning cylinder (40), and the thimble (3〇) cannot accurately impact the positioning pin (P) )The problem. © [Simplified description of the drawings] The drawings are diagrams showing the implementation state of the present invention on a workbench. The second A is a perspective enlarged view of the present invention. The first B diagram is a schematic diagram of the positioning pin identification device of the present invention. Third A is a side elevational cross-sectional view of the present invention. The third B diagram is an enlarged view of the front side according to the third A diagram. The fourth figure is a schematic diagram of the operation of the third A picture. The fifth figure is an assembly diagram of the thimble sleeve and the thimble of the present invention. 200945972 The sixth figure is an exploded view of the thimble sleeve and the thimble of the present invention. [Main component symbol description]
(10)機殼 (12)氣壓缸 (15)掛勾 (21)安裝孔 (30)頂針 (40)導引定位筒 (50)定位銷辨識裝置 (53)訊號發射器 (55)主控電路 (70)外管 (90)工作台 (11)固定支架 (13)饋料裝置 (20)頂針套管 (22)磁吸元件 (31)撞擊部 (45)掛勾 (51)(52)訊號傳輸線 (54)訊號接收器 (60)彈簧 (80)基板 (P)定位銷(10) casing (12) pneumatic cylinder (15) hook (21) mounting hole (30) thimble (40) guiding positioning cylinder (50) positioning pin identification device (53) signal transmitter (55) main control circuit (70) outer tube (90) table (11) fixed bracket (13) feeding device (20) thimble tube (22) magnetic element (31) impact portion (45) hook (51) (52) signal Transmission line (54) signal receiver (60) spring (80) substrate (P) positioning pin
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