JP3789559B2

JP3789559B2 - Punches for forming pilot holes for pachinko machines

Info

Publication number: JP3789559B2
Application number: JP20070096A
Authority: JP
Inventors: 司郎黒田; 明宏磯村
Original assignee: Heiwa Corp
Current assignee: Heiwa Corp
Priority date: 1996-07-30
Filing date: 1996-07-30
Publication date: 2006-06-28
Anticipated expiration: 2016-07-30
Also published as: JPH1033762A

Description

【０００１】
【発明の属する技術分野】
この発明は、パチンコ機を製造する際に、パチンコ玉の動きを作り出す遊技釘を遊技盤に打ち込む場合の下穴を形成するポンチに関する。
【０００２】
【従来の技術】
図１２は従来のポンチ１０を示している。ポンチ１０は円柱状のポンチ本体１０ａの先端より截頭円錐形のポンチ先端部１０ｂを同軸に突設し、ポンチ先端部１０ｂの先端より頂角の大きな短円錐状の案内部１０ｃを同軸に突設した形状に形成されている。
図１３は同従来のポンチ１０で遊技盤２０に下穴２１を形成する工程を示し、ポンチ１０をその案内部１０ｃより遊技盤２０の釘打位置にセルシート２０ａ側より遊技基板２０ｂ側に向けて垂直に打ち込むことで、ポンチ先端部１０ｂが案内部１０ｃを進入案内としながらセルシート２０ａを突き破って遊技基板２０ｂに数ミリメートル程度押し込まれる。この後、ポンチ１０が打ち込み動作と逆方向に真上に上昇して、ポンチ１０が遊技盤２０より抜き去られることで、下穴２１が遊技盤２０に形成される。この下穴２１を形成する工程は、図１２に示す形状のポンチ１０が遊技盤２０に設定された多数の釘打位置と対応するように図外の鋼板製のベース板の一表面に植立されたプレスゲージと呼ばれる下穴形成工具を使用して行われるのが一般的である。
図１４は同従来の下穴２１の形成された遊技盤２０に遊技釘２２を打ち込む工程を示し、遊技釘２２の尖端部２２ｂを下穴２１（図１３参照）にセルシート２０ａ側より遊技基板２０ｂ側に向けて所定の傾斜角度（例えば遊技盤がパチンコ店で島に取り付けられる上側に向けて５°程度傾斜する角度）を以て入れた後に、遊技釘２２の頭部２２ｃに上方より遊技釘２２の軸心と同軸となるハンマー力を１回又は数回繰り返して与えることで、遊技釘２２の尖端部２２ｂ側がセルシート２０ａを経由して遊技基板２０ｂに所定量打ち込まれる。この遊技釘２２が遊技盤２０に打ち込まれた状態においては、遊技釘２２の円柱状の釘本体２２ａの尖端部２０ｂ側に形成されたスパイラル状の捩り部２２ｅが遊技基板２０ｂに食い込んで遊技釘２２が遊技盤２０より抜けにくくする保持力を発揮している。
【０００３】
【発明が解決しようとする課題】
図１３に示すように、ポンチ１０を遊技盤２０に打ち込んだ際、セルシート２０ａが円錐形に形成されたポンチ先端部１０ｂでその中心から外側に向かって押し広げられ、ポンチ先端部１０ｂの周囲で、セルシート２０ａが環状に波打って盛り上がり、その盛上部２０ａ−１が遊技基板２０ｂより剥がれて、セルシート２０ａと遊技基板２０ｂとの間に環状の隙間２３が形成されることがある。
又、図１４に示すように、遊技釘２２を遊技盤２０に打ち込んだ際も、セルシート２０ａが円錐形に形成された遊技釘２２の尖端部２２ｂでその中心から外側に向かって押し広げられ、打ち込まれた遊技釘２２の根元の周囲で、セルシート２０ａが環状に波打って盛り上がり、その盛上部２０ａ−２が遊技基板２０ｂより剥がれて、セルシート２０ａと遊技基板２０ｂとの間に環状の隙間２４が形成されることがある。
要するに、ポンチ１０による下穴形成工程で環状の隙間２３が発生した場合、その後の釘打工程で当該隙間２３が発展的に拡大して隙間２４になることが多く、釘打工程で隙間２４が発生しなくても、隙間２４が発生する方向の応力歪みがセルシート２０ａに残っていて、後で、隙間２４が発生することがある。又、下穴形成工程で環状の隙間２３が発生しなくても、その後の釘打工程で隙間２４が発生することもある。更に、下穴形成工程で隙間２３が発生せず、釘打工程でも隙間２４が発生しなくても、隙間２４が発生する方向の応力歪みがセルシート２０ａに残っていて、後で、隙間２４が発生することもある。
これらの図１３〜１４に示した環状の盛上部２０ａ−１，２０ａ−２においては、セルシート２０ａが光透過性を有するセルロイドに意匠図を描いたものである場合は、セルシート２０ａの剥がれは小さく少ないが、セルロイドに代えてペットフィルム（ＰＥＴ；ポリエチレンテレフタレートフィルム）等のような粘りの高い基材を用いた際には、セルシート２０ａの剥がれがセルロイドに比べて大きく発生する傾向にある。これは、ポンチ１０又は遊技釘２２が遊技盤２０に打ち込まれる際、ポンチ１０又は遊技釘２２がセルシート２０ａと遊技基板２０ｂとを外側に押しやることで、ポンチ１０又は遊技釘２２の周囲に位置するセルシート２０ａに応力歪みが残り、その応力歪みがセルシート２０ａと遊技基板２０ｂとの結合強度の最も弱い部分に進行し、セルシート２０ａの遊技釘２２まわりが剥離して浮き上がることによるものと思われる。
又、セルシート２０ａとして、ペットフィルムのような表面層の裏面に透明電極、発光層、背面電極、保護層等からなるエレクトロルミネセンスのような面発光体に構成されたもの、又、当該面発光体を一部に有するもののいずれかを使用した場合も、同様に、透明電極と発光層との間、発光層と背面電極との間、背面電極と保護層との間、保護層とそれに裏打ちされたケント紙のような定着用紙との間等の中で、結合強度の最も弱い部分に剥離を生じる。
【０００４】
そこで、この発明はポンチで遊技盤に下穴を形成する際に、セルシートの一部を打ち抜いたり、セルシートの周囲に切れ目を入れたりすることによって、セルシートの剥離、浮き上がりを阻止して、品質信頼性を向上することができるパチンコ機製造の下穴形成用ポンチを提供しようとするものである。
【０００５】
【課題を解決するための手段】
１つの発明に係るパチンコ機製造の下穴形成用ポンチは、セルシートと遊技基板とからなる遊技盤に遊技釘を打ち込む場合の下穴を形成するために、セルシートの側からセルシートおよび遊技基板に打ち込まれるパチンコ機製造の下穴形成用ポンチであって、打抜刃部、截頭円錐部、柱状のポンチ本体が、パチンコ機製造の下穴形成用ポンチポンチのセルシートの側からセルシートおよび遊技基板に打ち込まれる場合における下から上に同軸に順に連接され、截頭円錐部は直径がポンチ本体側より打抜刃部側に行くに従って徐々に小さくなる形状であって、打抜刃部は截頭円錐部の最も直径が小さい下端と同径の直径を備えた短円柱状であって、打抜刃部の下端面と外周面とが交わる環状の外周縁は刃先として形成されており、打抜刃部が最初にセルシートの側からセルシートおよび遊技基板に進入し、この打抜刃部の進入に続いて截頭円錐部がセルシートの側からセルシートおよび遊技基板に進入することによって、打抜刃部の下端面がセルシートを遊技基板に引きずり込み、この打抜刃部の下端面で引きずり込まれるセルシートの伸びが限界に達すると、打抜刃部の刃先がセルシートを剪断して打ち抜き、この剪断過程において、截頭円錐部が伸びの誘起されたセルシートを遊技基板との間に挟み付けるような形態で遊技基板を摺鉢状に窪ませた後、パチンコ機製造の下穴形成用ポンチがセルシートの側に遊技盤より抜き去られることで、下穴を遊技盤に形成することを特徴としている。もう１つの発明に係るパチンコ機製造の下穴形成用ポンチは、セルシートと遊技基板とからなる遊技盤に遊技釘を打ち込む場合の下穴を形成するために、セルシートの側からセルシートおよび遊技基板に打ち込まれるパチンコ機製造の下穴形成用ポンチであって、打抜刃部、截頭円錐部、柱状のポンチ本体が、パチンコ機製造の下穴形成用ポンチのセルシートの側からセルシートおよび遊技基板に打ち込まれる場合における下から上に同軸に順に連接され、截頭円錐部は直径がポンチ本体側より打抜刃部側に行くに従って徐々に小さくなる形状であって、打抜刃部は截頭円錐部の最も直径が小さい下端として構成され、打抜刃部の截頭円錐部の外周面と交わる環状の外周縁は刃先として形成されており、打抜刃部が最初にセルシートの側からセルシートおよび遊技基板に進入し、この打抜刃部の進入に続いて截頭円錐部がセルシートの側からセルシートおよび遊技基板に進入することによって、打抜刃部の下端面がセルシートを遊技基板に引きずり込み、この打抜刃部の下端面で引きずり込まれるセルシートの伸びが限界に達すると、打抜刃部の刃先がセルシートを剪断して打ち抜き、この剪断過程において、截頭円錐部が伸びの誘起されたセルシートを遊技基板との間に挟み付けるような形態で遊技基板を摺鉢状に窪ませた後、パチンコ機製造の下穴形成用ポンチがセルシートの側に遊技盤より抜き去られることで、下穴を遊技盤に形成することを特徴としている。さらに、もう１つの発明に係るパチンコ機製造の下穴形成用ポンチは、セルシートと遊技基板とからなる遊技盤に遊技釘を打ち込む場合の下穴を形成するために、セルシートの側からセルシートおよび遊技基板に打ち込まれるパチンコ機製造の下穴形成用ポンチであって、打抜刃部、截頭角錐部、柱状のポンチ本体が、パチンコ機製造の下穴形成用ポンチのセルシートの側からセルシートおよび遊技基板に打ち込まれる場合における下から上に同軸に順に連接され、截頭角錐部は直径がポンチ本体側より打抜刃部側に行くに従って徐々に小さくなる形状であって、打抜刃部は截頭角錐部の最も直径が小さい下端として構成され、打抜刃部の截頭角錐部の外周面と交わる環状の外周縁は刃先として形成されており、打抜刃部が最初にセルシートの側からセルシートおよび遊技基板に進入し、この打抜刃部の進入に続いて截頭角錐部がセルシートの側からセルシートおよび遊技基板に進入することによって、打抜刃部の下端面がセルシートを遊技基板に引きずり込み、この打抜刃部の下端面で引きずり込まれるセルシートの伸びが限界に達すると、打抜刃部の刃先がセルシートを剪断して打ち抜き、この剪断過程において、截頭角錐部が伸びの誘起されたセルシートを遊技基板との間に挟み付けるような形態で遊技基板を摺鉢状に窪ませた後、パチンコ機製造の下穴形成用ポンチがセルシートの側に遊技盤より抜き去られることで、下穴を遊技盤に形成することを特徴としている。これら３つの発明に係るパチンコ機製造の下穴形成用ポンチによれば、打抜刃部および截頭円錐部または截頭角錐部がセルシートの側からセルシートおよび遊技基板に進入するのに伴い、セルシートと遊技基板との間に環状の隙間や盛上部が形成されることなく、打抜刃部および截頭円錐部または截頭角錐部がセルシートおよび遊技基板に下穴を打抜刃部および截頭円錐部または截頭角錐部と対応する形状に形成することができるので、遊技釘がセルシートの側から下穴に打ち込まれることで、その遊技釘が打ち込まれる際の摩擦力で、セルシートの遊技釘まわりが当該遊技釘の打ち込まれるのに伴い伸びて遊技釘の外周面に沿ってセルシートによる皮膜を作り、セルシートと遊技基板との間に環状の隙間や盛上部を形成することなく、遊技釘まわりのセルシートが遊技基板に密接した平面度を保持することができて、遊技釘がパチンコ玉からの衝撃を繰り返し受けても、パチンコ玉の反発具合や道筋をいつまでも適切な状態とし、好適な遊技性を確保することができる。とりわけ、截頭角錐部の場合、セルシートに切れ目が入り、セルシートの基材がセルロイドの場合はもとより、ペットフィルムのような粘りの高い基材の場合でも、切れ目の部分は応力集中により切れ目が拡大、進行するために、遊技釘のまわりのセルシートの応力が分散し、かつ、セルシートの切れ目で分離された各部分が遊技釘が遊技盤に進入するのに伴って、遊技釘と遊技基板との間に引き込まれるので、剥離、浮き上がりを阻止して、品質信頼性を向上することができる。
【０００６】
【発明の実施の形態】
図１は第１実施形態を示している。この第１実施形態はポンチを遊技盤に打ち込む際に、セルシートの一部を打ち抜く態様である。図１のａ〜ｂ図において、ポンチ１は、円柱状のポンチ本体１ａ、截頭円錐部１ｂ、小径な短円柱状の打抜刃部１ｃを同軸に上から下に順に連接した形状に形成されている。截頭円錐部１ｂは直径がポンチ本体１ａ側より打抜刃部１ｃ側に行くに従って徐々に小さくなる形状を有している。打抜刃部１ｃは截頭円錐部１ｂの最も直径が小さい下端と同径の直径を備えている。打抜刃部１ｃの下端面と外周面とが交わる環状の外周縁は刃先１ｄとして形成されている。
【０００７】
このポンチ１で遊技盤２に下穴を形成するには、図１のｃ図に示すように、ポンチ１をその打抜刃部１ｃより遊技盤２の釘打位置にセルシート２ａ側より遊技基板２ｂ側に向けて垂直に打ち込むことで、打抜刃部１ｃの下端面がセルシート２ａと遊技基板２ｂとを釘打位置の中心を中心とする小円形の範囲を押圧して、その周囲のセルシート２ａを遊技基板２ｂに引きずり込むにように侵入する。そして、セルシート２ａの伸びが限界に達すると、打抜刃部１ｃの刃先１ｄがセルシート２ａを剪断して打ち抜く。この剪断過程において、截頭円錐部１ｂが伸びの誘起されたセルシート２ａを遊技基板２ｂとの間に挟み付けるような形態で遊技基板２ｂを摺鉢状に窪ませる。この後、ポンチ１が打ち込み動作と逆方向に真上に上昇して遊技盤２より抜き去られることで、下穴３が遊技盤２に形成される。この下穴３の上部はセルシート２ａが遊技基板２ｂに密接した摺鉢状に形成され、その底部は打抜刃部１ｃの短円柱状と同じ形状で、その底面にはセルシート２ａの剪断部分２ａ−１が残存している。
【０００８】
次に、前記ポンチ１で形成された下穴３を有する遊技盤２に遊技釘４を打ち込むには、図１のｄ図に示すように、遊技釘４の尖端部４ｂを下穴３にセルシート２ａ側より遊技基板２ｂ側に向けて所定の傾斜角度（例えば遊技盤がパチンコ店で島に取り付けられる上側に向けて５°程度傾斜する角度）を以て入れた後に、遊技釘４の頭部４ｃに上方より遊技釘４の軸心と同軸となるハンマー力を１回又は数回繰り返して与えることで、遊技釘４の尖端部４ｂ側をセルシート２ａを経由して遊技基板２ｂに所定量打ち込む。この遊技釘４が遊技盤に打ち込まれる際、セルシート２ａの剪断部分２ａ−１及び下穴３の摺鉢状の底部側周縁は、遊技釘４とセルシート２ａとの間に働く摩擦力で伸び、伸びの限界に達した後に、粉々に破砕されて、遊技釘３の侵入に伴って遊技基板２ｂにばらばらに埋没する。上記セルシート２ａの伸びの結果形成された下穴３の摺鉢状の開口側周縁２ａ−２は、遊技釘４の釘本体４ａと遊技基板２ｂとで挟み付けられて遊技基板２ｂに密接して摺鉢状に窪んだ形態を保持している。遊技釘４の尖端部４ｂ側に形成されたスパイラル状の捩り部４ｄは遊技基板２ｂに食い込んで遊技釘４が遊技盤より抜けにくくする保持力を発揮している。
【０００９】
この実施形態によれば、截頭円錐部１ｂの小径側に短円柱状の打抜刃部１ｃを同軸に備えたポンチ１で下穴３を形成すると、打抜刃部１ｃがそれに対応するセルシート２ａの特定部分２ａ−１を押圧すると共にその周囲のセルシート２ａを遊技基板２ｂに引きずり込むと共に、打抜刃部１ｃの刃先１ｄがセルシート２ａの特定部分２ａ−１を剪断して打ち抜くことにより、セルシート２ａと遊技基板２ｂとの間に環状の隙間や盛上部が形成されることなく、遊技基板２ｂに下穴３をポンチ１の截頭円錐部１ｂと打抜刃部１ｃに対応する形状に形成することができる。このような形状の下穴３に遊技釘４を打ち込むことで、その遊技釘４が打ち込まれる際の摩擦力で、セルシート２ａの遊技釘４まわりが当該遊技釘４の打ち込まれるのに伴い伸びて遊技釘４の外周面に沿ってセルシート２ａによる皮膜を作り、セルシート２ａと遊技基板２ｂとの間に環状の隙間や盛上部を形成することなく、遊技釘４まわりのセルシート２ａが遊技基板２ｂに密接した平面度を保持することができて、遊技釘４が図外のパチンコ玉からの衝撃を繰り返し受けても、パチンコ玉の反発具合や道筋をいつまでも適切な状態とし、好適な遊技性を確保することができる。
【００１０】
図２〜６は第２〜５実施形態を示している。これらの第２〜５実施形態はポンチ１を遊技盤２に打ち込む際に、セルシート２ａに切り込みを入れる態様である。
【００１１】
図２に示す第２実施形態のポンチ１は、円柱状のポンチ本体１ａ、截頭角錐状の切刃部１ｅ、短円錐状の案内部１ｆを同軸に上から下に順に連接した形状に形成されている。切刃部１ｅは外形がポンチ本体１ａ側より案内部１ｆ側に行くに従って徐々に小さくなる形状を有している。切刃部１ｅの相互に隣接する外周面が交わる角縁は刃先１ｇとして形成されている。案内部１ｆは切刃部１ｅの頂角よりも角度の大きい頂角を備えている。
【００１２】
図３に示す第３実施形態のポンチ１は、円柱状のポンチ本体１ａ、截頭円錐部１ｂ、短角錐状の切刃部１ｈを同軸に上から下に順に連接した形状に形成されている。切刃部１ｈは截頭円錐部１ｂの頂角よりも角度の大きい頂角を備えている。切刃部１ｈの相互に隣接する外周面が交わる角縁は刃先１ｉとして形成されている。
【００１３】
図４に示す第４実施形態のポンチ１は、円柱状のポンチ本体１ａ、六角等のような短角柱部１ｊ、短角柱部１ｊと同角数の角錐状の切刃部１ｋを同軸に上から下に順に連接した形状に形成されている。切刃部１ｋは、短角柱部１ｊの多角形断面に整合する多角形底面を有する。切刃部１ｋの相互に隣接する外周面が交わる角縁は刃先１ｍとして形成されている。
【００１４】
図５に示す第５実施形態のポンチ１は、円柱状のポンチ本体１ａ、切刃部１ｎ、短円錐状の案内部１ｆを同軸に上から下に順に連接した形状に形成されている。切刃部１ｎは外形がポンチ本体１ａ側より案内部１ｆ側に行くに従って徐々に小さくなる截頭円錐状の外周面に８個の凹条１ｎ−１と８個の凸条１ｎ−２とが周方向に交互に連接形成された多角形に形成されている。凸条１ｎ−２の相互に隣接する外周面が交わる８本の角縁は刃先１ｐとして形成されている。
【００１５】
これらの第２〜５実施形態のポンチ１で遊技盤に下穴を形成する場合、ポンチ１を遊技盤２の釘打位置にセルシート側より遊技基板側に向けて垂直に所定量打ち込むことで、各ポンチ１の切刃部１ｅ，１ｈ，１ｋ，１ｎがセルシートを通過する過程で、それぞれの刃先１ｇ，１ｉ，１ｍ，１ｐがその周囲に存在するセルシートに切れ目を入れる。例えば、図６のａ図に示すように第２実施形態のポンチ１を遊技盤２に打ち込むことで、図６のｂ図に示すように切刃部１ｅの刃先１ｇがセルシート２ａに切れ目５を入れる。
【００１６】
これらの実施形態によれば、ポンチ１を遊技盤２に打ち込むことで、セルシート２ａに切れ目５が入ることにより、セルシート２ａの基材がセルロイドの場合はもとより、ペットフィルムのような粘りの高い基材の場合でも、切れ目５の部分は応力集中により、切れ目５が拡大、進行するために、遊技釘４（図１のｄ図参照）のまわりのセルシート２ａの応力が分散し、かつ、セルシート２ａの切れ目５で分離された各部分２ａ−３が遊技釘４が遊技盤２に進入するのに伴って、遊技釘４と遊技基板２ｂとの間に引き込まれるので、剥離、浮き上がりを阻止して、品質信頼性を向上することができる。
【００１７】
図７〜１１は第６〜１０実施形態を示している。これらの実施形態はポンチ１の先端部の形状に特徴がある。
【００１８】
図７に示す第６実施形態のポンチ１は、第１実施形態のポンチ１における短円柱状の打抜刃部１ｃ（図１参照）に代えて、円柱状のポンチ本体１ａより下方に向けて同軸に連接された截頭円錐部１ｂの下端面により形成された打抜刃部１ｑを備え、打抜刃部１ｑが截頭円錐部１ｂの外周面と交わる環状の外周縁を刃先１ｒとしている。
【００１９】
図８に示す第７実施形態のポンチ１は、円柱状のポンチ本体１ａより下方に向けて截頭角錐状の切刃部１ｓを同軸に連接し、切刃部１ｓの相互に隣接する外周面が交わる角縁を刃先１ｔとしている。
【００２０】
図９に示す第８実施形態のポンチ１は、円柱状のポンチ本体１ａより下方に向けて角錐状の切刃部１ｕを同軸に連接し、切刃部１ｕの相互に隣接する外周面が交わる角縁を刃先１ｖとしている。
【００２１】
図１０に示す第９実施形態のポンチ１は、第６実施形態のポンチ１における打抜刃部１ｑに凹部１ｗを截頭円錐部１ｂと逆向きの截頭円錐形に形成し、凹部１ｗの内周面と截頭円錐部１ｂの外周面とが交わる三角形断面からなる環状の刃先１ｘを備えている。凹部１ｗの深さは、セルシート２ａ（図６参照）の厚さよりも浅くするか、又は深くしてもよいが、深くする場合には、ポンチ１を遊技盤２ｂ（図６参照）に打ち込む下穴形成を行うことで形成された１枚又は２枚以上のセルシート２ａの打抜残渣が凹部１ｗに詰まり、その詰まった打抜残渣に、新しい打抜残渣が重なり、その重なった打抜残渣が刃先１ｘより外側に突出するように、１枚のセルシート２ａの厚さを基準に設定すれば、凹部１ｗの目詰まりを防ぐことができる。
【００２２】
図１１に示す第１０実施形態のポンチ１は、第９実施形態のポンチ１における凹部１ｗの底面と同径の中抜孔１ｙを凹部１ｗと同軸に連接したパイプ状に形成して、打抜残渣をポンチ１の上方に排出するようにしてある。この場合、中抜孔１ｙはポンチ本体１ａを上方に貫通せずに、行止まり形状に形成し、ポンチ本体１ａの中間部の外周面と中抜孔１ｙとに貫通する仮想線で示す排出孔１ｚを形成し、打抜残渣を中抜孔１ｙより排出孔１ｚを経由してポンチ１の側方に排出することも可能である。
【００２３】
尚、第９又は第１０実施形態を第１又は第７実施形態に組み合わせることも考えられる。
【００２４】
前記各実施形態はポンチ１の単体形状を図示して説明したが、各実施形態のポンチ１のいずれか１種類または複数種類を遊技盤２に設定された多数の釘打位置と対応するように図外の鋼板等のような剛体のベースの一表面に植立したプレスゲージと称呼される下穴形成工具としてのポンチにも適用しても同様の作用効果がある。
【００２５】
セルシート２ａは、その裏面に意匠図を印刷したもの以外に、ペットフィルムのような表面層の裏面に透明電極、発光層、背面電極、保護層等からなるエレクトロルミネセンスのような面発光体に構成されたものを使用しても、同様の作用効果がある。
【図面の簡単な説明】
【図１】第１実施形態のポンチを示し、ａ図は側面図、ｂ図は底面図、ｃ図はポンチを遊技盤に打ち込んだ断面図、ｄ図は遊技盤に遊技釘を打ち込んだ断面図。
【図２】第２実施形態のポンチを示し、ａ図は側面図、ｂ図は底面図。
【図３】第３実施形態のポンチを示し、ａ図は側面図、ｂ図は底面図。
【図４】第４実施形態のポンチを示し、ａ図は側面図、ｂ図は底面図。
【図５】第５実施形態のポンチを示し、ａ図は側面図、ｂ図は底面図。
【図６】第２実施形態のポンチを遊技盤に打ち込んだ断面図。
【図７】第６実施形態のポンチを示し、ａ図は側面図、ｂ図は底面図。
【図８】第７実施形態のポンチを示し、ａ図は側面図、ｂ図は底面図。
【図９】第８実施形態のポンチを示し、ａ図は側面図、ｂ図は底面図。
【図１０】第９実施形態のポンチを示し、ａ図は縦断面図、ｂ図は底面図。
【図１１】第１０実施形態のポンチを示す縦断面図。
【図１２】従来のポンチを示し、ａ図は側面図、ｂ図は底面図。
【図１３】従来のポンチを遊技盤に打ち込んだ断面図。
【図１４】従来の遊技盤に遊技釘打ち込んだ断面図。
【符号の説明】
１ポンチ、１ａポンチ本体、１ｂ截頭円錐部、１ｃ，１ｑ打抜刃部、１ｄ，１ｇ，１ｉ，１ｍ，１ｐ，１ｒ，１ｔ，１ｖ１ｘ刃先、１ｅ，１ｈ，１ｋ，１ｎ，１ｓ，１ｕ，切刃部、１ｗ凹部、１ｙ中抜孔、１ｚ排出孔、２遊技盤、２ａセルシート、２ｂ遊技基板、３下穴、４遊技釘。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a punch that forms a pilot hole when a game nail that creates the movement of a pachinko ball is driven into a game board when a pachinko machine is manufactured.
[0002]
[Prior art]
FIG. 12 shows a conventional punch 10. The punch 10 has a frustoconical punch tip 10b coaxially protruding from the tip of a cylindrical punch body 10a, and a short conical guide portion 10c having a larger apex angle than the tip of the punch tip 10b. It is formed in the set shape.
FIG. 13 shows a process of forming a pilot hole 21 in the game board 20 with the conventional punch 10, and the punch 10 is directed from the guide portion 10c to the nail position of the game board 20 from the cell sheet 20a side to the game board 20b side. By punching vertically, the punch tip portion 10b penetrates the cell sheet 20a while being guided by the guide portion 10c, and is pushed into the game board 20b by several millimeters. Thereafter, the punch 10 is raised directly upward in the direction opposite to the driving operation, and the punch 10 is removed from the game board 20, whereby the prepared hole 21 is formed in the game board 20. The step of forming the pilot hole 21 is established on one surface of a base plate made of a steel plate (not shown) so that the punch 10 having the shape shown in FIG. 12 corresponds to a number of nailing positions set on the game board 20. It is common to use a prepared hole forming tool called a press gauge.
FIG. 14 shows a process of driving the game nail 22 into the game board 20 in which the pilot hole 21 is formed. The pointed portion 22b of the game nail 22 is inserted into the pilot hole 21 (see FIG. 13) from the cell sheet 20a side. After entering a predetermined inclination angle toward the side 20b (for example, an angle at which the game board is inclined about 5 ° toward the upper side attached to the island in the pachinko parlor), the game nail 22 is inserted into the head 22c of the game nail 22 from above. By applying a hammer force that is coaxial with the axial center of the game nail once or several times, the pointed end 22b side of the game nail 22 is driven into the game board 20b through the cell sheet 20a. In a state where the game nail 22 is driven into the game board 20, the spiral twisted portion 22e formed on the pointed end portion 20b side of the cylindrical nail body 22a of the game nail 22 bites into the game board 20b and plays the game nail. 22 has a holding power that makes it difficult to remove from the game board 20.
[0003]
[Problems to be solved by the invention]
As shown in FIG. 13, when the punch 10 is driven into the game board 20, the cell sheet 20a is pushed outward from the center by the punch tip portion 10b formed in a conical shape, and around the punch tip portion 10b. Thus, the cell sheet 20a may wave up and rise, and the raised portion 20a-1 may be peeled off from the game board 20b to form an annular gap 23 between the cell sheet 20a and the game board 20b.
Further, as shown in FIG. 14, when the game nail 22 is driven into the game board 20, the cell sheet 20a is pushed outward from the center thereof at the pointed portion 22b of the game nail 22 formed in a conical shape. The cell sheet 20a undulates and rises around the base of the game nail 22 that has been driven, and the raised portion 20a-2 is peeled off from the game board 20b, and the ring between the cell sheet 20a and the game board 20b. The gap 24 may be formed.
In short, when the annular gap 23 is generated in the pilot hole forming process by the punch 10, the gap 23 often expands and becomes the gap 24 in the subsequent nailing process, and the gap 24 is often formed in the nailing process. Even if it does not occur, stress strain in the direction in which the gap 24 is generated remains in the cell sheet 20a, and the gap 24 may be generated later. Even if the annular gap 23 is not generated in the prepared hole forming process, the gap 24 may be generated in the subsequent nailing process. Further, even if the gap 23 is not generated in the pilot hole forming process and the gap 24 is not generated in the nail driving process, the stress strain in the direction in which the gap 24 is generated remains in the cell sheet 20a. May occur.
In the annular raised portions 20a-1 and 20a-2 shown in FIGS. 13 to 14, the cell sheet 20a is peeled off when the cell sheet 20a is a celluloid having a light transmitting property. However, when a highly viscous substrate such as a PET film (PET; polyethylene terephthalate film) is used instead of celluloid, the cell sheet 20a tends to peel off more than celluloid. . This is because when the punch 10 or the game nail 22 is driven into the game board 20, the punch 10 or the game nail 22 pushes the cell sheet 20a and the game board 20b outward so that the punch 10 or the game nail 22 is positioned around the punch 10 or the game nail 22. The stress strain remains in the cell sheet 20a, and the stress strain progresses to the portion with the weakest bonding strength between the cell sheet 20a and the game board 20b, and the game nail 22 of the cell sheet 20a peels off and floats up. Seem.
Further, the cell sheet 20a is constituted by a surface light emitter such as electroluminescence composed of a transparent electrode, a light emitting layer, a back electrode, a protective layer, etc. on the back surface of a surface layer such as a pet film, Similarly, when any one of the light emitters is used, similarly, between the transparent electrode and the light emitting layer, between the light emitting layer and the back electrode, between the back electrode and the protective layer, and between the protective layer and the protective layer. Peeling occurs in the weakest part of the bonding strength, such as between the fixed sheet such as the backed Kent paper.
[0004]
Therefore, when the present invention is to form a prepared hole on the game board with the punch, or punching a portion of the cell sheet, by that or scored around the cell Sheets, separation of cell sheets, the floating blocking Thus, it is an object of the present invention to provide a punch for forming a pilot hole for manufacturing a pachinko machine that can improve quality reliability.
[0005]
[Means for Solving the Problems]
One of the prepared hole forming punch pachinko manufacturing in accordance with the invention, in order to form a pilot hole when Komu Chi hit game nails on the game board comprising a cell sheet and the game board, the cell sheet from the side of the cell sheet and a bottom hole forming punch pachinko production, which are discharged to the game board, the punching blades section, truncated cone portion, the columnar punch the body, pachinko machines cell sheet of the prepared hole forming punch punch manufacturing are connected in this order coaxially from the bottom to the top in the case, which are discharged in the cell sheet and the game board from the side, truncated cone portion is a gradually becomes smaller shape according to the diameter goes punching blade portion side of the punch body The punching blade portion has a short cylindrical shape with the same diameter as the lower end of the frustoconical portion having the smallest diameter, and the annular outer peripheral edge where the lower end surface and the outer peripheral surface of the punching blade portion intersect is the cutting edge The punching blade is the most When the cell sheet and the game board are entered from the cell sheet side, and the frustoconical part enters the cell sheet and the game board from the cell sheet side following the entry of the punching blade part, the punching blade part When the elongation of the cell sheet dragged by the lower end surface of the cell sheet onto the game board and dragged by the lower end surface of the punching blade portion reaches the limit, the blade edge of the punching blade portion punches the cell sheet by shearing and punching. In the shearing process, after punching the gaming board into a bowl shape in such a manner that the cell sheet in which the frustoconical part is induced to stretch is sandwiched between the gaming board and the punch, Is removed from the game board on the side of the cell sheet, so that a pilot hole is formed in the game board . Lower hole forming punch pachinko manufacture according to another invention, in order to form a prepared hole of the case on the game board comprising a cell sheet and a game board Komu Chi hit game nails, cells from the side of the cell sheet a prepared hole forming punch pachinko manufacturing Ru driven into sheet and the game board, the punching blades section, truncated cone, columnar punch the body, the cell sheet of the prepared hole forming punch pachinko production In the case of being driven into the cell sheet and game board from the side , the conical portion is connected in order from the bottom to the top, and the truncated cone portion has a shape that gradually decreases in diameter from the punch body side to the punching blade side. The punching blade portion is configured as a lower end having the smallest diameter of the truncated cone portion, and an annular outer peripheral edge intersecting with the outer peripheral surface of the truncated cone portion of the punching blade portion is formed as a cutting edge. Part first from the cell sheet side The sheet blade and the game board, and following the entry of the punching blade part, the frustoconical part enters the cell sheet and the game board from the cell sheet side, so that the lower end surface of the punching blade part moves the cell sheet. When the elongation of the cell sheet dragged to the game board and dragged by the lower end surface of the punching blade reaches the limit, the cutting edge of the punching blade shears and punches the cell sheet. After the game board is depressed in a bowl shape in such a way that the cell sheet with the stretched part sandwiched between the game board and the game board, the punch for punching holes for pachinko machine manufacture is placed on the cell sheet side. It is characterized by forming a pilot hole in the game board by being removed from the board . In addition, a punch for forming a pilot hole manufactured by a pachinko machine according to another aspect of the present invention is a cell punch from the cell sheet side to form a pilot hole when a game nail is driven into a game board composed of a cell sheet and a game board. A punch for forming a hole in a pachinko machine manufactured to be punched into a sheet and a game board, wherein a punching blade, a truncated pyramid, and a columnar punch body are on the side of the cell sheet of the punch for forming a hole in a pachinko machine In the case of being driven into the cell sheet and game board from the bottom, the conical pyramid portion is connected in order from the bottom to the top, and the diameter of the truncated pyramid portion gradually decreases from the punch body side toward the punching blade side. The punching blade part is configured as the lower end with the smallest diameter of the truncated pyramid part, and the annular outer peripheral edge that intersects the outer peripheral surface of the truncated pyramid part of the punching blade part is formed as a cutting edge. Cell sheet The cell sheet and the game board are entered from the side, and the truncated pyramid part enters the cell sheet and the game board from the cell sheet side following the entry of the punching blade part, so that the lower end surface of the punching blade part is When the cell sheet is dragged to the game board and the elongation of the cell sheet dragged by the lower end surface of the punching blade part reaches the limit, the cutting edge of the punching blade part punches the cell sheet by punching, and in this shearing process, After the game board is recessed in a slab-like shape in such a manner that the cell sheet in which the truncated pyramid portion is induced to stretch is sandwiched between the game board, the punch for punching holes for pachinko machine manufacture It is characterized in that a pilot hole is formed in the game board by being removed from the game board to the side. According to the punch for forming a pilot hole according to these three inventions, the punching blade portion and the truncated cone portion or the truncated pyramid portion enter the cell sheet and game board from the cell sheet side. The punching blade part and the truncated cone part or truncated pyramid part punch holes in the cell sheet and gaming board without forming an annular gap or a raised portion between the cell sheet and the game board. Since the game nail is driven into the pilot hole from the side of the cell sheet, the friction force when the game nail is driven can be reduced. The cell sheet's game nail is stretched as the game nail is driven to form a film with the cell sheet along the outer periphery of the game nail, and an annular gap or raised portion is formed between the cell sheet and the game board. Game without forming The surrounding cell sheet can maintain the flatness close to the game board, and even if the game nail repeatedly receives the impact from the pachinko ball, the resilience state and path of the pachinko ball will be in an appropriate state forever, suitable Gameability can be ensured. In particular, in the case of a truncated pyramid, the cell sheet has a cut, and not only when the base material of the cell sheet is celluloid, but also when the base material is a sticky base material such as a pet film, Because the stress of the cell sheet around the game nail is dispersed and each part separated by the cut of the cell sheet enters the game board as the game nail enters the game board. Since it is drawn in between the game board, peeling and lifting can be prevented, and quality reliability can be improved.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a first embodiment. The first embodiment is a mode in which a part of the cell sheet is punched when the punch is driven into the game board. 1A and 1B, the punch 1 is formed in a shape in which a cylindrical punch body 1a, a truncated cone portion 1b, and a small-diameter short cylindrical punching blade portion 1c are coaxially connected in order from top to bottom. Has been. The truncated cone portion 1b has a shape in which the diameter gradually decreases from the punch body 1a side toward the punching blade portion 1c side. The punching blade 1c has the same diameter as the lower end of the truncated cone 1b having the smallest diameter. An annular outer peripheral edge where the lower end surface and the outer peripheral surface of the punching blade portion 1c intersect is formed as a blade edge 1d.
[0007]
In order to form a pilot hole in the game board 2 with this punch 1, as shown in FIG. 1c, the punch 1 is moved from the punching blade portion 1c to the nail driving position of the game board 2 from the cell sheet 2a side. By vertically driving toward the substrate 2b side, the lower end surface of the punching blade portion 1c presses the cell sheet 2a and the game substrate 2b in a small circular area centering on the center of the nail driving position, The cell sheet 2a is intruded so as to be dragged into the game board 2b. When the elongation of the cell sheet 2a reaches the limit, the cutting edge 1d of the punching blade portion 1c shears and punches the cell sheet 2a. In this shearing process, the game board 2b is depressed in a mortar shape in such a manner that the cell sheet 2a in which the truncated cone portion 1b is induced to be stretched is sandwiched between the game board 2b. Thereafter, the punch 1 is raised directly upward in the direction opposite to the driving operation and is removed from the game board 2, whereby the prepared hole 3 is formed in the game board 2. The upper portion of the pilot hole 3 is formed in a mortar shape in which the cell sheet 2a is in close contact with the game board 2b, and the bottom portion is the same shape as the short cylindrical shape of the punching blade portion 1c, and the bottom surface is sheared by the cell sheet 2a. Portion 2a-1 remains.
[0008]
Next, in order to drive the game nail 4 into the game board 2 having the pilot hole 3 formed by the punch 1, the pointed portion 4b of the game nail 4 is inserted into the pilot hole 3 as shown in FIG. The head 4c of the game nail 4 is inserted after a predetermined inclination angle (for example, an angle at which the game board is inclined about 5 ° toward the upper side attached to the island in the pachinko parlor) from the seat 2a side to the game board 2b side. A hammer force that is coaxial with the axial center of the game nail 4 is applied to the game nail 4 once or several times, so that a predetermined amount of the pointed end 4b side of the game nail 4 is driven into the game board 2b via the cell sheet 2a. . When the game nail 4 is driven into the game board, the shearing portion 2a-1 of the cell sheet 2a and the bottom edge of the bottom hole 3 of the lower hole 3 are frictional forces acting between the game nail 4 and the cell sheet 2a. After reaching the limit of elongation, it is crushed into pieces and buried in the game board 2b as the game nail 3 enters. The scallop-shaped opening side peripheral edge 2a-2 of the pilot hole 3 formed as a result of the expansion of the cell sheet 2a is sandwiched between the nail body 4a and the game board 2b of the game nail 4 and is in close contact with the game board 2b. It retains the shape of a mortar-shaped bowl. The spiral twisted portion 4d formed on the pointed end 4b side of the game nail 4 exerts a holding force that bites into the game board 2b and makes it difficult for the game nail 4 to come off from the game board.
[0009]
According to this embodiment, when the pilot hole 3 is formed with the punch 1 having the short cylindrical punching blade portion 1c coaxially on the small diameter side of the truncated conical portion 1b, the punching blade portion 1c corresponds to the corresponding cell. The specific portion 2a-1 of the sheet 2a is pressed and the surrounding cell sheet 2a is dragged into the game board 2b, and the cutting edge 1d of the punching blade portion 1c shears and punches the specific portion 2a-1 of the cell sheet 2a. Therefore, without forming an annular gap or a raised portion between the cell sheet 2a and the game board 2b, the pilot board 3 corresponds to the truncated cone part 1b and the punching blade part 1c of the punch 1 in the game board 2b. It can be formed into a shape to By driving the game nail 4 into the prepared hole 3 having such a shape, the periphery of the game nail 4 of the cell sheet 2a extends as the game nail 4 is driven by the frictional force generated when the game nail 4 is driven. A cell sheet 2a is formed along the outer peripheral surface of the game nail 4, and the cell sheet 2a around the game nail 4 is formed without forming an annular gap or a raised portion between the cell sheet 2a and the game board 2b. The flatness close to the game board 2b can be maintained, and even if the game nail 4 repeatedly receives an impact from a pachinko ball not shown in the figure, the repulsion state of the pachinko ball and the path are always appropriate, Gameability can be ensured.
[0010]
2 to 6 show second to fifth embodiments. In these second to fifth embodiments, when the punch 1 is driven into the game board 2, the cell sheet 2a is cut.
[0011]
The punch 1 according to the second embodiment shown in FIG. 2 is formed in a shape in which a cylindrical punch body 1a, a truncated pyramid-shaped cutting edge 1e, and a short conical guide 1f are coaxially connected in order from top to bottom. Has been. The cutting edge portion 1e has a shape whose outer shape gradually decreases from the punch body 1a side toward the guide portion 1f side. A corner edge where the outer peripheral surfaces adjacent to each other of the cutting edge portion 1e intersect is formed as a cutting edge 1g. The guide portion 1f has an apex angle that is larger than the apex angle of the cutting edge portion 1e.
[0012]
The punch 1 according to the third embodiment shown in FIG. 3 is formed in a shape in which a cylindrical punch body 1a, a truncated cone portion 1b, and a short pyramid-shaped cutting blade portion 1h are connected coaxially in order from top to bottom. . The cutting edge portion 1h has an apex angle that is larger than the apex angle of the truncated cone portion 1b. The corner edge where the outer peripheral surfaces adjacent to each other of the cutting edge portion 1h intersect is formed as a cutting edge 1i.
[0013]
The punch 1 according to the fourth embodiment shown in FIG. 4 has a cylindrical punch body 1a, a short prism portion 1j such as a hexagon and the like, and a pyramid-shaped cutting blade portion 1k having the same number as that of the short prism portion 1j. It is formed in a shape that is connected in order from the bottom to the bottom. The cutting edge portion 1k has a polygonal bottom surface that matches the polygonal cross section of the short prism portion 1j. A corner edge where the outer peripheral surfaces adjacent to each other of the cutting edge portion 1k intersect is formed as a cutting edge 1m.
[0014]
The punch 1 of the fifth embodiment shown in FIG. 5 is formed in a shape in which a cylindrical punch body 1a, a cutting edge portion 1n, and a short conical guide portion 1f are coaxially connected in order from top to bottom. The cutting edge portion 1n has eight concave ridges 1n-1 and eight convex ridges 1n-2 on a frustoconical outer peripheral surface that gradually decreases in size as it goes from the punch body 1a side to the guide portion 1f side. It is formed in a polygon that is alternately connected in the circumferential direction. Eight corner edges at which the outer peripheral surfaces adjacent to each other of the ridges 1n-2 intersect are formed as the cutting edge 1p.
[0015]
When forming a pilot hole in the game board with the punch 1 of these second to fifth embodiments, the punch 1 is driven into the nail position of the game board 2 by a predetermined amount vertically from the cell sheet side toward the game board side. In the process in which the cutting edge portions 1e, 1h, 1k, and 1n of each punch 1 pass through the cell sheet, the respective cutting edges 1g, 1i, 1m, and 1p make a cut in the cell sheet existing around the edge. For example, when the punch 1 of the second embodiment is driven into the game board 2 as shown in FIG. 6a, the cutting edge 1g of the cutting edge portion 1e is cut into the cell sheet 2a as shown in FIG. 6b. Insert.
[0016]
According to these embodiments, by punching the punch 1 into the game board 2, the cut 5 enters the cell sheet 2a, so that the base material of the cell sheet 2a is not only celluloid but also sticky like a pet film. Even in the case of a high base material, since the cut 5 expands and advances due to stress concentration in the portion of the cut 5, the stress of the cell sheet 2 a around the game nail 4 (see FIG. 1 d) is dispersed, and Each part 2a-3 separated by the cut 5 of the cell sheet 2a is pulled between the game nail 4 and the game board 2b as the game nail 4 enters the game board 2, so that it peels off and rises. It is possible to improve quality reliability.
[0017]
7 to 11 show sixth to tenth embodiments. These embodiments are characterized by the shape of the tip of the punch 1.
[0018]
The punch 1 of the sixth embodiment shown in FIG. 7 is directed downward from the cylindrical punch body 1a instead of the short cylindrical punching blade 1c (see FIG. 1) in the punch 1 of the first embodiment. A punching blade portion 1q formed by the lower end surface of the truncated cone portion 1b connected coaxially is provided, and an annular outer peripheral edge where the punching blade portion 1q intersects with the outer peripheral surface of the truncated cone portion 1b is defined as a cutting edge 1r. .
[0019]
The punch 1 according to the seventh embodiment shown in FIG. 8 has a truncated pyramid-shaped cutting blade portion 1s coaxially connected downward from a cylindrical punch body 1a, and the outer peripheral surfaces of the cutting blade portions 1s adjacent to each other. The edge at which the crossing is defined as the cutting edge 1t.
[0020]
The punch 1 of the eighth embodiment shown in FIG. 9 has a pyramid-shaped cutting blade portion 1u coaxially connected downward from a cylindrical punch body 1a, and the outer peripheral surfaces adjacent to each other of the cutting blade portions 1u intersect. The corner edge is the cutting edge 1v.
[0021]
The punch 1 of the ninth embodiment shown in FIG. 10 is formed by forming a recess 1w in the punching blade portion 1q of the punch 1 of the sixth embodiment in a truncated cone shape opposite to the truncated cone portion 1b. An annular cutting edge 1x having a triangular cross section where the inner peripheral surface and the outer peripheral surface of the truncated cone portion 1b intersect is provided. The depth of the recess 1w may be shallower or deeper than the thickness of the cell sheet 2a (see FIG. 6), but when punched, the punch 1 is driven into the game board 2b (see FIG. 6). The punching residue of one or more cell sheets 2a formed by forming the pilot hole is clogged in the recess 1w, and a new punching residue is overlapped with the clogged punching residue, and the punching is overlapped. If the thickness of one cell sheet 2a is set as a reference so that the residue protrudes outside the cutting edge 1x, clogging of the recess 1w can be prevented.
[0022]
The punch 1 of the tenth embodiment shown in FIG. 11 is formed by forming a hollow hole 1y having the same diameter as the bottom surface of the recess 1w in the punch 1 of the ninth embodiment into a pipe shape coaxially connected to the recess 1w. Is discharged above the punch 1. In this case, the hollow hole 1y does not penetrate the punch body 1a upward, but is formed in a dead end shape, and a discharge hole 1z indicated by an imaginary line penetrating the outer peripheral surface of the intermediate part of the punch body 1a and the hollow hole 1y. It is also possible to discharge the punching residue from the inside punching hole 1y to the side of the punch 1 through the discharge hole 1z.
[0023]
Note that the ninth or tenth embodiment may be combined with the first or seventh embodiment.
[0024]
In each of the above embodiments, the single shape of the punch 1 is illustrated and described. However, any one type or a plurality of types of the punch 1 of each embodiment correspond to a large number of nail driving positions set on the game board 2. The same effect can be obtained when applied to a punch as a pilot hole forming tool called a press gauge planted on one surface of a rigid base such as a steel plate not shown.
[0025]
The cell sheet 2a has a surface light emitting body such as electroluminescence composed of a transparent electrode, a light emitting layer, a back electrode, a protective layer and the like on the back surface of a surface layer such as a pet film, in addition to a printed design diagram on the back surface. The same effect can be obtained even if the one configured as described above is used.
[Brief description of the drawings]
FIG. 1 shows a punch according to a first embodiment, wherein a is a side view, b is a bottom view, c is a sectional view in which the punch is driven into a game board, and d is a cross section in which a game nail is driven into the game board. Figure.
FIGS. 2A and 2B show a punch according to a second embodiment, in which FIG. A is a side view, and FIG.
FIGS. 3A and 3B show a punch according to a third embodiment, in which FIG. 3a is a side view, and FIG.
FIGS. 4A and 4B show a punch according to a fourth embodiment, in which FIG. A is a side view and FIG. B is a bottom view.
FIGS. 5A and 5B show a punch according to a fifth embodiment, in which FIG. A is a side view and FIG. B is a bottom view.
FIG. 6 is a cross-sectional view in which the punch according to the second embodiment is driven into the game board.
FIGS. 7A and 7B show a punch according to a sixth embodiment, in which FIG. A is a side view and FIG. B is a bottom view.
FIGS. 8A and 8B show a punch according to a seventh embodiment, in which FIG. A is a side view and FIG. B is a bottom view.
FIGS. 9A and 9B show a punch according to an eighth embodiment, wherein a is a side view and b is a bottom view.
10A and 10B show a punch according to a ninth embodiment, wherein FIG. 10a is a longitudinal sectional view, and FIG. 10b is a bottom view.
FIG. 11 is a longitudinal sectional view showing a punch according to a tenth embodiment.
FIGS. 12A and 12B show a conventional punch, wherein a is a side view and b is a bottom view. FIG.
FIG. 13 is a cross-sectional view in which a conventional punch is driven into a game board.
FIG. 14 is a cross-sectional view in which a game nail is driven into a conventional game board.
[Explanation of symbols]
1 punch, 1a punch body, 1b frustoconical part, 1c, 1q punching blade part, 1d, 1g, 1i, 1m, 1p, 1r, 1t, 1v1x cutting edge, 1e, 1h, 1k, 1n, 1s, 1u, Cutting edge part, 1w concave part, 1y hollow hole, 1z discharge hole, 2 game board, 2a cell sheet, 2b game board, 3 pilot hole, 4 game nail.

Claims

To form a pilot hole when Komu Chi hit game nails on the game board comprising a cell sheet and the game board, under hole forming punch pachinko production, which are discharged from the side of the cell sheet to the cell sheet and the game board there, the punching blades section, truncated cone, coaxial from bottom to top in the case of columnar punch the body is driven from the side of the cell sheet of the prepared hole forming punch pachinko producing a cell sheet and a game board The frustoconical portion is shaped so that its diameter gradually decreases from the punch body side to the punching blade side, and the punching blade portion has a lower end with the smallest diameter of the frustoconical portion. It is a short cylinder with the same diameter, and the outer peripheral edge of the punching blade that intersects the lower end surface and the outer peripheral surface is formed as a cutting edge. Enter the cell sheet and game board from Following the entry of the punching blade part, the truncated cone part enters the cell sheet and the game board from the cell sheet side, so that the lower end surface of the punching blade part drags the cell sheet into the game board. When the elongation of the cell sheet dragged by the lower end surface of the part reaches the limit, the cutting edge of the punching blade shears and punches the cell sheet, and in this shearing process, the frustoconical part is induced to stretch After the game board is recessed in a bowl shape in a form that is sandwiched between the game board and the game board, the punch for punching holes for pachinko machine manufacture is pulled out from the game board to the side of the cell sheet. A punch for forming a prepared hole for a pachinko machine manufactured by forming a hole in a game board .

To form a pilot hole when Komu Chi hit game nails on the game board comprising a cell sheet and the game board, under hole forming punch pachinko production, which are discharged from the side of the cell sheet to the cell sheet and the game board there, punching blades section, truncated cone, columnar punch the body, are connected in this order coaxially from the bottom to the top in the case, which are discharged from the side of the cell sheet of the punch in the cell sheet and the game board, the truncated The cone portion has a shape in which the diameter gradually decreases from the punch body side toward the punching blade portion side, and the punching blade portion is configured as the lower end of the truncated cone portion having the smallest diameter. The outer peripheral edge of the ring that intersects the outer peripheral surface of the frustoconical part is formed as a cutting edge, and the punching blade part first enters the cell sheet and the game board from the cell sheet side. Next, the truncated cone is the cell sheet When the cell sheet and the game board are entered from the side, the lower end surface of the punching blade part drags the cell sheet into the game board, and the elongation of the cell sheet dragged by the lower end surface of the punching blade part reaches a limit. The blade edge of the punching blade portion shears and punches the cell sheet, and in this shearing process, the game board is slid in such a manner that the frustoconical portion sandwiches the cell sheet in which the elongation is induced with the game board. After being recessed into a bowl shape, a punch for forming a prepared hole for a pachinko machine is removed from the game board to the side of the cell sheet, thereby forming a prepared hole in the game board. Hole forming punch.

A punch for punching holes for pachinko machines manufactured from the side of the cell sheet to the cell sheet and the game board in order to form a pilot hole when a game nail is driven into the game board comprising the cell sheet and the game board. The punching blade part, the truncated pyramid part, and the columnar punch body are connected coaxially in order from the bottom to the top when driven into the cell sheet and game board from the cell sheet side of the pilot hole forming punch manufactured by the pachinko machine. The truncated pyramid has a shape that gradually decreases in diameter from the punch body side toward the punching blade side, and the punching blade portion is configured as a lower end having the smallest diameter of the truncated pyramid portion. An annular outer peripheral edge that intersects with the outer peripheral surface of the truncated pyramid portion of the punching blade portion is formed as a cutting edge, and the punching blade portion first enters the cell sheet and game board from the cell sheet side. Continued to enter the club When the truncated pyramid part enters the cell sheet and the game board from the cell sheet side, the lower end surface of the punching blade part drags the cell sheet into the game board and is dragged by the lower end surface of the punching blade part. When the elongation of the cell sheet reaches the limit, the cutting edge of the punching blade shears and punches the cell sheet. After the game board is recessed in the shape of a slab in a form to be attached, a pilot hole forming punch is removed from the game board to the side of the cell sheet, thereby forming a pilot hole in the game board A punch for forming a hole in a pachinko machine.