JP3350430B2 - Press mold for spoon molding - Google Patents
Press mold for spoon moldingInfo
- Publication number
- JP3350430B2 JP3350430B2 JP00780098A JP780098A JP3350430B2 JP 3350430 B2 JP3350430 B2 JP 3350430B2 JP 00780098 A JP00780098 A JP 00780098A JP 780098 A JP780098 A JP 780098A JP 3350430 B2 JP3350430 B2 JP 3350430B2
- Authority
- JP
- Japan
- Prior art keywords
- die
- edge
- ball portion
- forming
- molding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
【0001】[0001]
【発明の属する技術分野】この発明は、食卓用のスプー
ンの製造に係り、詳しくはスプーンのボール部を成形す
るスプーン成形用金型に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the production of a spoon for a table, and more particularly to a spoon molding die for molding a ball portion of a spoon.
【0002】[0002]
【従来の技術】従来、この種の食卓用のスプーンの製造
工程を図6に示す工程図にしたがって説明すると、先
ず、図7に示すように原板材、例えばステンレス、洋白
等の原板材から所定寸法の原形板材Wに材料取りする工
程と、材料取りした原形板材Wより柄部2とボール部3
とからなる原形素材1を打抜く地抜き工程と(図8参
照)、この原形素材1のボール部3側を冷間圧延加工に
より所定の厚さに圧潰し(図9参照)、それにより加工
硬化した素材1を無酸化炉にて焼鈍した後、さらにプレ
スによりボール部3の外形打抜きを行いボール部3Aの
中間素材4とする半切り(ボール部型抜き)工程(図1
0参照)を行い、中間素材4の平面(柄部2、ボール部
3)をサイザルバフ研磨を行って、表面のキズ、ピンホ
ール等を除去する平磨き工程を行う。次いで、柄部2に
絵柄を圧印し縁取りをして柄部2Aの中間素材4Aとす
る柄部仕上げ工程(図11参照)と、次いでプレスによ
り中間素材4Aのボール部3Aを所定の湾曲くぼみ状に
成形する壺押し(ボール部成形)工程と(図12参
照)、人手による作業でボール部3Aの周縁および柄部
2Aのバリ取り・コバ摺工程と、ボール部3Aの周縁お
よび柄部2Aの目潰し工程と、自動研磨仕上げ工程と、
洗浄・検査・包装工程とより構成されてスプーンSが成
形される。2. Description of the Related Art Conventionally, a manufacturing process of a table spoon of this kind will be described with reference to a process diagram shown in FIG. 6. First, as shown in FIG. A step of removing material from an original plate material W having a predetermined size;
(See FIG. 8), and the ball portion 3 side of the original material 1 is crushed to a predetermined thickness by cold rolling (see FIG. 9). After the cured material 1 is annealed in a non-oxidizing furnace, the outer shape of the ball portion 3 is further punched out by a press to form an intermediate material 4 of the ball portion 3A (half-cutting of the ball portion) (FIG. 1).
0), and the flat surface (the handle portion 2 and the ball portion 3) of the intermediate material 4 is subjected to sisal buff polishing to perform a flat polishing process for removing scratches, pinholes, and the like on the surface. Next, a pattern finishing step (see FIG. 11) is performed in which a pattern is stamped and trimmed on the pattern portion 2 to make the intermediate material 4A of the pattern portion 2A (see FIG. 11), and then the ball portion 3A of the intermediate material 4A is pressed into a predetermined concave shape by pressing. (See FIG. 12), a deburring and edge-sliding process of the periphery of the ball portion 3A and the handle portion 2A, and a process of removing the edge of the ball portion 3A and the handle portion 2A by manual operation. Crushing process, automatic polishing finishing process,
The spoon S is formed by the washing, inspection and packaging steps.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、この従
来のスプーンSの製造工程において、とくに、ボール部
3Aの成形は、図13および図14に示すように成形金
型10はダイ11とポンチ12とにより構成されるもの
で、このダイ11は台形状に形成され、その中央部分に
はスプーンSのボール部3Aの背部6aの曲面に倣う背
部成形面14を底部に有する成形凹部13が形成され、
この背部成形面14の四周面15は同背部成形面14に
沿って自然に延長される延長面に形成されている。ま
た、ポンチ12の先端側はボール部3Aの背部6aと対
応する腹部6bを成形する腹部成形面16が形成され、
この腹部成形面16の四周は所定の高さ範囲で腹部成形
面16に沿って自然に延長される四周面17が形成さ
れ、この四周面17よりテーパー状に逃し面18が形成
されている。このように形成されたダイ11はダイホル
ダーに取付けられ、ポンチ12はポンチホルダーに取付
けられ、図15(a) に示すように、このダイ11の成形
凹部13には中間素材4Aのボール部3Aが載置され、
ポンチ12に所定のストロークが与えられてボール部3
Aを加圧し、同ボール部3Aは所定の曲面に形成され
る。なお、この場合ダイ11の背部成形面14とポンチ
12の腹部成形面16は所定の間隔tを有してボール部
3Aを加圧成形する(図15(b) 参照)。However, in the manufacturing process of the conventional spoon S, particularly, the molding of the ball portion 3A is performed by using a die 11 and a punch 12 as shown in FIGS. The die 11 is formed in a trapezoidal shape, and a molding recess 13 having a back molding surface 14 that follows the curved surface of the back 6a of the ball portion 3A of the spoon S at the bottom is formed in the center thereof.
The four peripheral surfaces 15 of the back molding surface 14 are formed as extension surfaces that naturally extend along the back molding surface 14. Further, an abdominal part forming surface 16 for forming an abdominal part 6b corresponding to the back part 6a of the ball part 3A is formed on the tip side of the punch 12,
The four circumferences of the abdomen forming surface 16 are formed with a four-peripheral surface 17 that naturally extends along the abdomen forming surface 16 within a predetermined height range, and a tapered relief surface 18 is formed from the four-peripheral surface 17. The die 11 thus formed is mounted on a die holder, and the punch 12 is mounted on a punch holder. As shown in FIG. 15 (a), the molding recess 13 of the die 11 has a ball portion 3A of an intermediate material 4A. Is placed,
When a predetermined stroke is given to the punch 12 and the ball 3
A is pressed, and the ball portion 3A is formed into a predetermined curved surface. In this case, the ball portion 3A is pressure-formed at a predetermined interval t between the spine forming surface 14 of the die 11 and the belly forming surface 16 of the punch 12 (see FIG. 15B).
【0004】ところが、このポンチ12およびダイ11
による成形は、主として絞り加工で、ボール部3Aは外
周部がポンチ腹部成形面16とダイ11の背部成形面1
4に圧接され、中央部の底部が絞り加工される。この
時、図15(b) に示すようにボール部3Aの周縁3aの
上部側は隙間tを有する開放状態であり、このため同周
縁3aの高さは肉厚変化の影響を受けて、図16(a)(b)
(c) に示すように側面形状で縁部3aは中高のうねり状
となり、先端側は下がる状態に成形されるとともに、こ
の縁部3aは半切り(ボール部成形)工程でプレスで打
抜きされた状態の儘であるから縁部3aは切断面であ
り、図16(c) に示すように端面3aは外向きで図示の
ように鋭い角部3b,3cとなる。このため事後の工程
における人手により角部3b,3cを曲面状に面取りを
してコバ摺、コバ目潰しするのに極めて手数を要するば
かりでなく、丸味形状に不揃いを生じ、また、ボール部
3の先端側が鋭角状に、また、薄く仕上り易く、スプー
ンの使用の際に唇を傷付ける危険性も考えられて、品質
的にもコスト的にも問題を生じていた。However, the punch 12 and the die 11
Is mainly performed by drawing. The outer periphery of the ball portion 3A is formed by the punch abdomen forming surface 16 and the back forming surface 1 of the die 11.
4, and the center bottom is drawn. At this time, as shown in FIG. 15 (b), the upper side of the peripheral edge 3a of the ball portion 3A is in an open state having a gap t, so that the height of the peripheral edge 3a is affected by a change in wall thickness. 16 (a) (b)
(c) As shown in the side view, the edge 3a is formed into a wavy shape with a middle height and the tip side is formed to be lowered, and the edge 3a is punched by a press in a half-cut (ball portion forming) step. Since the state remains as it is, the edge 3a is a cut surface, and as shown in FIG. 16 (c), the end face 3a faces outward and has sharp corners 3b and 3c as shown. For this reason, it is not only extremely troublesome to round the corners 3b and 3c in a curved shape by hand in the subsequent process and flatten the edges 3b and 3c, but also the rounded shape is not uniform, and the ball portion 3 The tip side has an acute angle, is easy to finish thinly, and is considered to have a risk of damaging the lips when using a spoon. This has caused problems in terms of quality and cost.
【0005】本発明は、上記従来の問題点を解決するた
めになされたもので、ボール部の周縁の成形が安定した
形状に成形することができるとともに、縁部の面取りコ
バ摺および目潰し作業を省力的に行うことのでき、周部
に適度の丸味があって、安全に使用出来るスプーンの成
形用プレス金型を提供することを目的とするものであ
る。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is possible to form the periphery of a ball portion into a stable shape, and to perform chamfering and sliding of the edge portion. An object of the present invention is to provide a press die for forming a spoon that can be performed labor-saving, has an appropriate roundness in the periphery, and can be used safely.
【0006】[0006]
【課題を解決するための手段】本発明は、上記従来の技
術課題を解決するため、スプーンのボール部を成形する
ダイとポンチとからなる金型において、前記ダイの成形
凹部の底部側にボール部の背部に倣う曲面状の背部成形
面を形成し、この背部成形面の四周部位には所定の高さ
で立ち上がる嵌合縁を形成し、また、前記ポンチの先端
側は、前記背部成形面と対応してボール部の腹部に倣う
曲面状の腹部成形面を形成するとともに、この腹部成形
面の四周部位はダイの四周部位と整合して形成され、該
四周部位にはダイの嵌合縁に指向して背部成形面と腹部
成形面との間隔を封止する段差縁が形成されて、同段差
縁と腹部成形面との角部には所定の径の凹状R面を形成
し、この段差縁の端部にはダイの嵌合縁とスライド可能
に嵌合する嵌合部を設ける構成としたスプーン成形用プ
レス金型である。SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional technical problem, the present invention relates to a mold comprising a die for forming a ball portion of a spoon and a punch, wherein a ball is provided on the bottom side of a concave portion of the die. A curved back-shaped molding surface that follows the back of the portion is formed, and a fitting edge that rises at a predetermined height is formed at four circumferential portions of the back-formed surface, and the tip side of the punch is the back-formed surface. A curved abdomen forming surface following the abdomen of the ball portion is formed in correspondence with the above, and the four circumferential portions of the abdominal forming surface are formed in alignment with the four circumferential portions of the die. A step edge for sealing the gap between the back molding surface and the abdomen molding surface is formed, and a concave R surface having a predetermined diameter is formed at a corner between the step difference edge and the abdomen molding surface. At the end of the step edge, a fitting part that slidably fits with the fitting edge of the die A configuration as to spoon molding press die was provided.
【0007】[0007]
【発明の効果】本発明は、上記構成としたことで、ボー
ル部の加圧成形過程で、材料の流れは、背部成形面と腹
部成形面との間を段差縁に向けて流れ、同隙間の左右を
流れる背部成形面に沿う素材の流れは同背部成形面と段
差縁の角部で堰止され、また、腹部成形面に沿う素材の
流れは同腹部成形面に連続形成された凹状R面に沿って
背部成形面と段差縁の角部に向けて流れる。このため、
この左右の側部を流れる素材の一部は先端側に向けて流
れることとなる。これにより湾曲状のボール部の周縁
は、その内側は凹状R面に倣う曲面に形成され、外側は
鋭い角部に形成されて、同ボール部の側面および先端か
らの外観形状は中高のうねり状および先端下がりのない
ボール部に形成されるものであるから、後工程において
は周縁の外側の鋭い角部を曲面状にする面取りコバ摺・
コバ目潰し作業でよく、また、同内側の角部は成形時に
凹状R面により美麗に仕上げられているので、従来の工
程を1工程省略することができるとともに、先端部の丸
味づけ加工も容易に行うことができて、不揃いによる品
質低下を防止することができるので,安定してスプーン
を形成することができる。According to the present invention having the above-described structure, in the step of molding the ball portion under pressure, the flow of the material flows between the back molding surface and the abdomen molding surface toward the step edge, and the same gap is formed. The flow of the material along the back molding surface flowing left and right is blocked at the corner of the back molding surface and the step edge, and the flow of the material along the abdomen molding surface is a concave R formed continuously on the same abdominal molding surface. It flows along the surface toward the back molding surface and the corner of the step edge. For this reason,
A part of the material flowing on the left and right sides flows toward the front end. As a result, the periphery of the curved ball portion is formed into a curved surface following the concave R surface on the inside, and the outer edge is formed into a sharp corner, and the outer shape from the side surface and the tip of the ball portion has a wavy shape with a middle height. In addition, since it is formed on the ball portion where the tip does not drop, in the subsequent process, a chamfered edge that makes a sharp corner outside the periphery be curved.
The corners on the inner side are finely finished by the concave R surface at the time of molding, so one step can be omitted from the conventional process, and the rounding of the tip can be easily performed. As a result, the quality can be prevented from being deteriorated due to the irregularity, so that the spoon can be formed stably.
【0008】[0008]
【発明の実施の形態】次に、本発明の実施形態を図面に
したがって説明する。なお、本発明においては、材料取
り工程から柄部仕上げ工程までは従来と同様に行われ、
ボール部3Aの成形は、以下の成形用金型21により成
形される。Next, embodiments of the present invention will be described with reference to the drawings. In the present invention, the steps from the material removing step to the pattern part finishing step are performed in the same manner as in the related art.
The ball portion 3A is formed by a molding die 21 described below.
【0009】この金型21は従来と同様に図1および図
2に示すようにダイ22とポンチ32とより構成されて
いる。このダイ22の台形状の本体23の上面側に凹設
される成形凹部24の底部は従来と同様にスプーンSの
ボール部3Aの背部6aの曲面に倣う背部成形面25が
形成され、この背部成形面25は図2に示すようにボー
ル部3Aの先端3b側を成形する先端部26は先上がり
の位置に設けられ、また、ボール部3Aのネック部5側
を成形する基部27は先端部26より基部下がりの位置
にあって、この先端部26と基部27とを結ぶ線a(ス
プーンSのボール部3Aの周縁3aに相当する)の四周
部位28には所定の高さで立上がって加圧時にポンチ3
2の嵌合部37とスライド嵌合する嵌合縁29が形成さ
れ、この嵌合縁29の左右には所定の角度で逃し面30
が形成されている。また、この基部27側にはスプーン
Sの柄部2Aが変形しないように凹部31が凹設されて
いる。This mold 21 is composed of a die 22 and a punch 32 as shown in FIGS. A back forming surface 25 which follows the curved surface of the back portion 6a of the ball portion 3A of the spoon S is formed at the bottom of the forming recess 24 formed on the upper surface side of the trapezoidal main body 23 of the die 22 as in the related art. As shown in FIG. 2, the molding surface 25 has a tip portion 26 for molding the tip 3b side of the ball portion 3A provided at a raised position, and a base portion 27 for molding the neck portion 5 side of the ball portion 3A has a tip portion. At a position lower than the base 26 by a predetermined height, a four-peripheral portion 28 of a line a (corresponding to the peripheral edge 3a of the ball portion 3A of the spoon S) connecting the distal end portion 26 and the base 27 rises at a predetermined height. Punch 3 when pressurized
A fitting edge 29 which slide-fits with the second fitting portion 37 is formed.
Is formed. Further, a concave portion 31 is provided on the base 27 side so that the handle 2A of the spoon S is not deformed.
【0010】また、ポンチ32の先端側は従来と同様に
スプーンSのボール部3Aの腹部6bを成形する曲面の
腹部成形面33が形成され、この腹部成形面33の四周
部位34はダイ22の四周部位28と対応する位置で線
aに倣う図示斜状縁に形成されて、図3に示すように嵌
合縁29に向かう段差縁35が形成され、この段差縁3
5と腹部成形面33との成す角部には所定の径の凹状R
面36が付されている。また、この段差縁35の端部に
はダイ22に形成した嵌合縁29とスライド可能に嵌合
する嵌合部37が所定の長さで形成され、この嵌合部3
7の上部側はテーパー部38が形成されている。Further, a curved abdomen forming surface 33 for forming the abdomen 6b of the ball portion 3A of the spoon S is formed on the tip side of the punch 32 in the same manner as in the prior art. A stepped edge 35 is formed at a position corresponding to the four circumferential portions 28 at a slanted edge shown in the figure following the line a, and is formed toward the fitting edge 29 as shown in FIG.
5 and the abdomen forming surface 33 have a concave R
Surface 36 is provided. A fitting portion 37 is formed at an end of the stepped edge 35 so as to slidably fit with the fitting edge 29 formed on the die 22.
A tapered portion 38 is formed on the upper side of 7.
【0011】なお、このダイ22とポンチ32とを型合
わせすると、嵌合縁29に嵌合部37と嵌合した状態で
背部成形面25と腹部成形面33はボール部3Aの肉厚
相当の所定の間隔tに設定されるとともに、背部成形面
25の四周部位28は腹部成形面33の段差縁35と線
aに倣って整合されて、背部成形面25と腹部成形面3
3との間の間隔tはこの段差縁35により封止されてい
る(図4(b) 参照)。When the die 22 and the punch 32 are mold-fitted, the back molding surface 25 and the abdomen molding surface 33 are in a state of being fitted to the fitting edge 37 with the fitting portion 37 and have a thickness equivalent to the thickness of the ball portion 3A. At a predetermined interval t, the four circumferential portions 28 of the back molding surface 25 are aligned with the step edge 35 of the abdomen molding surface 33 along the line a, and the back molding surface 25 and the abdominal molding surface 3 are aligned.
3 is sealed by the step edge 35 (see FIG. 4B).
【0012】このように形成されたダイ22はダイホル
ダーに取付けられ、また、ポンチ32はポンチホルダー
に取付けられる。そして、中間素材4Aのボール部3A
をダイ22の成形凹部24に整合載置するとともに、ネ
ック部5を固定凹部31に嵌め込み、ボール部3Aの先
端を嵌合縁29に押し付けた状態で中間素材4Aは位置
決め固定される。The die 22 thus formed is mounted on a die holder, and the punch 32 is mounted on a punch holder. And the ball portion 3A of the intermediate material 4A
Is aligned with the forming recess 24 of the die 22, the neck portion 5 is fitted into the fixing recess 31, and the intermediate material 4A is positioned and fixed with the tip of the ball portion 3A pressed against the fitting edge 29.
【0013】この状態でポンチ33を所定のストローク
で降下してボール部3Aを加圧すると、この加圧成形は
従来と同様に主として絞り加工で、ボール部3Aの周縁
3a側はダイ22の背部成形面25と強く接し、中央部
の底部を絞り加工する。この時、材料の流れは、背部成
形面25と腹部成形面33との間を段差縁35に向けて
流れ、同隙間tの左右を流れる背部成形面25に沿う素
材の流れは同背部成形面25と段差縁35の角部で堰止
され、また、腹部成形面33に沿う素材の流れは同腹部
成形面33に連続形成された凹状R面36に沿って背部
成形面25と段差縁35の角部に向けて流れる。このた
め、この左右の側部を流れる素材の一部は先端側26に
向けて流れることとなり、これにより湾曲状のボール部
3Aが成形される。In this state, when the punch 33 is lowered by a predetermined stroke to press the ball portion 3A, the pressure forming is performed mainly by drawing as in the conventional case, and the peripheral edge 3a side of the ball portion 3A is It is in strong contact with the molding surface 25 and the bottom at the center is drawn. At this time, the flow of the material flows between the back forming surface 25 and the abdomen forming surface 33 toward the step edge 35, and the flow of the material along the back forming surface 25 flowing right and left of the gap t is the same as the back forming surface. 25, and the flow of the material along the abdomen forming surface 33 flows along the concave R-surface 36 continuously formed on the abdomen forming surface 33 and the back forming surface 25 and the step rim 35. Flows towards the corners of. Therefore, a part of the material flowing on the left and right side portions flows toward the front end side 26, thereby forming the curved ball portion 3A.
【0014】そして、ポンチ33の上動によりスプーン
Sを型出しすると、図5(c) に示すようにボール部3A
の周縁3aはその内側は凹状R面36に倣う曲面39a
に形成され、外側は鋭い角部39bに形成されて、同ボ
ール部3Aの側面および先端からの外観形状は図5(a)
(b)に示すようにその周縁3aに中高うねり状および先
端下がりのないボール部3Aに形成されている。When the spoon S is modeled by the upward movement of the punch 33, as shown in FIG.
Has a curved surface 39a whose inner surface follows the concave R surface 36.
The outer shape is formed at a sharp corner portion 39b, and the outer shape of the ball portion 3A from the side surface and the tip is shown in FIG.
As shown in (b), a ball portion 3A is formed on the peripheral edge 3a of the ball portion 3A without a swelling shape and a falling end.
【0015】そして、取出されたスプーンSは、そのボ
ール部3Aの周縁3aの外側の鋭い角部39bが人手に
より曲面状に面取りコバ摺・コバ目潰しが施され、しか
る後、自動研磨仕上げおよび洗浄・検査・包装が行われ
る。In the spoon S taken out, a sharp corner 39b on the outer side of the peripheral edge 3a of the ball portion 3A is chamfered in a curved surface by hand and flattened, and thereafter, is automatically polished and washed.・ Inspection and packaging are performed.
【0016】このようにして成形されたスプーンSは、
そのボール部3Aの成形にあたり、その成形金型21の
ダイ22の成形凹部24の底部側にボール部3Aの背部
6aに倣う曲面状の背部成形面25を形成し、この背部
成形面25の四周部位28には所定の高さで立ち上がる
嵌合縁29を形成し、また、成形金型21のポンチ32
の先端側は、背部成形面24と対応してボール部3Aの
腹部6bに倣う曲面状の腹部成形面33を形成するとと
もに、この腹部成形面33の四周部位34はダイ22の
四周部位28と整合して形成され、この四周部位34に
はダイ22の嵌合縁29に指向して背部成形面25と腹
部成形面33との間隔tを封止する段差縁35が形成さ
れて、同段差縁35と腹部成形面33との角部には所定
の径の凹状R面36を形成し、この段差縁35の端部に
はダイ22の嵌合縁29とスライド可能に嵌合する嵌合
部37を設ける構成としたものである。The spoon S thus formed is
In molding the ball portion 3A, a curved back molding surface 25 following the back portion 6a of the ball portion 3A is formed on the bottom side of the molding concave portion 24 of the die 22 of the molding die 21, and four rounds of the back molding surface 25 are formed. A fitting edge 29 that rises at a predetermined height is formed in the portion 28, and a punch 32 of the molding die 21 is formed.
Forms a curved abdomen forming surface 33 corresponding to the abdomen 6b of the ball portion 3A in correspondence with the back forming surface 24, and the four circumferential portions 34 of the abdominal forming surface 33 correspond to the four circumferential portions 28 of the die 22. A stepped edge 35 is formed in the four circumferential portions 34 so as to be directed toward the fitting edge 29 of the die 22 and seal the interval t between the back molding surface 25 and the abdomen molding surface 33. A concave R surface 36 having a predetermined diameter is formed at the corner between the edge 35 and the abdomen forming surface 33, and the end of the stepped edge 35 is slidably fitted to the fitting edge 29 of the die 22. The configuration is such that a portion 37 is provided.
【0017】このように形成された成形金型21により
成形されるボール部3Aは、上記したようにボール部3
Aの加圧成形過程で、材料の流れは、背部成形面25と
腹部成形面33との間を段差縁35に向けて流れ、同隙
間tの左右を流れる背部成形面25に沿う素材の流れは
同背部成形面25と段差縁35の角部で堰止され、ま
た、腹部成形面33に沿う素材の流れは同腹部成形面3
3に連続形成された凹状R面36に沿って背部成形面2
5と段差縁35の角部に向けて流れる。このため、この
左右の側部を流れる素材の一部は先端側26に向けて流
れることとなる。As described above, the ball 3A formed by the molding die 21 formed as described above is
In the pressure forming process of A, the material flows along the back molding surface 25 between the back molding surface 25 and the abdomen molding surface 33 toward the step edge 35, and flows on the left and right sides of the gap t. Are blocked at the corners of the back molding surface 25 and the stepped edge 35, and the flow of the material along the abdomen molding surface 33 is
3 along the concave R surface 36 continuously formed on the back surface 2
5 and flows toward the corner of the step edge 35. Therefore, a part of the material flowing on the left and right sides flows toward the front end side 26.
【0018】これにより湾曲状のボール部3Aの周縁3
aは、上記したように図5(c) に示すように、その内側
は凹状R面36に倣う曲面39aに形成され、外側は鋭
い角部39bに形成されて、同ボール部3Aの側面およ
び先端からの外観形状は図5(a)(b)に示すようにその周
縁3aに中高うねり状および先端下がりのないボール部
3Aに形成されるものであるから、後工程においては周
縁3aの外側の鋭い角部39bを曲面状にする面取りコ
バ摺・コバ目潰し作業でよく、また、同内側は成形時に
凹状R面36により曲面39aに美麗に仕上げられてい
るので、従来の角部3bの面取りコバ摺・コバ目潰し工
程を1工程省略することができるとともに、先端部26
側の縁先が薄くて丸味がなく鋭利に仕上がる防止でき
て、安全性の向上と形状の不揃いによる品質低下を防止
することができるので,安定してスプーンSを形成する
ことができる。Thus, the peripheral edge 3 of the curved ball portion 3A
As shown in FIG. 5C, a is formed on the inside of a curved surface 39a that follows the concave R-surface 36, and on the outside is formed on a sharp corner 39b, as shown in FIG. As shown in FIGS. 5 (a) and 5 (b), the outer shape of the outer peripheral edge 3a is formed on the peripheral edge 3a of the ball portion 3A without undulation and the tip is not lowered. Chamfering to make the sharp corner 39b a curved surface may be performed by flattening and flattening. Also, since the inside is beautifully finished into the curved surface 39a by the concave R surface 36 at the time of molding, the conventional chamfering of the corner 3b is performed. One step of the edge sliding and edge crushing step can be omitted, and the tip 26 can be omitted.
Since the edge on the side is thin, it can be prevented from being sharpened without roundness, and it is possible to improve the safety and prevent the quality from being deteriorated due to irregular shapes, so that the spoon S can be formed stably.
【0019】なお、ダイ22の背部成形面25の四周部
位28を先上がりの先端部26と基部下がりの基部27
を結ぶ斜状の線aに沿って形成するように例示したが、
これに限定するものではなく、例えば水平状であっても
よい。It should be noted that the four circumferential portions 28 of the back molding surface 25 of the die 22 are divided into a front-end tip 26 and a base-lower base 27.
Is formed along the oblique line a connecting the
The present invention is not limited to this, and may be, for example, a horizontal shape.
【図1】スプーン成形用金型の斜視図である。FIG. 1 is a perspective view of a spoon forming mold.
【図2】ポンチとダイの断面との対応を示す図である。FIG. 2 is a diagram showing a correspondence between a punch and a cross section of a die.
【図3】図2の丸印部分の拡大断面図である。FIG. 3 is an enlarged sectional view of a circle shown in FIG. 2;
【図4】(a)(b)成形金型によるボール部の成形説明図で
ある。FIGS. 4A and 4B are explanatory diagrams of forming a ball portion by a forming die.
【図5】(a) 成形金型により成形したボール部の側面図
である。 (b) 成形金型により成形したボール部を先端から見た図
である。 (c) 成形金型により成形したボール部の周縁の断面図で
ある。FIG. 5 (a) is a side view of a ball portion formed by a forming die. (b) It is the figure which looked at the ball part shape | molded by the shaping die from the front-end | tip. (c) is a sectional view of the periphery of a ball portion formed by a forming die.
【図6】従来のスプーンの製造工程図である。FIG. 6 is a manufacturing process diagram of a conventional spoon.
【図7】原形板材の斜視図である。FIG. 7 is a perspective view of an original plate material.
【図8】原形素材の斜視図である。FIG. 8 is a perspective view of an original material.
【図9】原形素材のボール部を冷間圧延した斜視図であ
る。FIG. 9 is a perspective view of a ball portion of an original material that has been cold-rolled.
【図10】原形素材の圧潰したボール部を外形打抜きし
た斜視図である。FIG. 10 is a perspective view of the crushed ball portion of the original material punched out.
【図11】図10の原形素材の柄部に絵柄を圧印した中
間素材の斜視図である。11 is a perspective view of an intermediate material obtained by stamping a pattern on a pattern portion of the original material of FIG. 10;
【図12】中間素材のボール部を加圧成形した斜視図で
ある。FIG. 12 is a perspective view in which a ball portion of an intermediate material is pressure-formed.
【図13】従来のスプーン成形用金型の斜視図である。FIG. 13 is a perspective view of a conventional spoon molding die.
【図14】従来のポンチとダイの断面との対応を示す図
である。FIG. 14 is a diagram showing a correspondence between a conventional punch and a cross section of a die.
【図15】(a)(b)従来の成形金型によるボール部の成形
説明図である。FIGS. 15 (a) and 15 (b) are explanatory views of forming a ball portion using a conventional forming die.
【図16】(a) 従来の成形金型により成形したボール部
の側面図である。 (b) 同じく成形金型により成形したボール部を先端から
見た図である。 (c) 同じく成形金型により成形したボール部の周縁の断
面図である。FIG. 16 (a) is a side view of a ball portion formed by a conventional molding die. (b) It is the figure which looked at the ball part similarly formed with the molding die from the front-end | tip. (c) It is sectional drawing of the periphery of the ball part similarly shape | molded by the molding die.
S スプーン 3A ボール部 6a 背部 6b 腹部 21 成形金型 22 ダイ 24 成形凹部 25 背部成形面 28 四周部位 29 嵌合縁 32 ポンチ 33 腹部成形面 34 四周部位 35 段差縁 36 凹状R面 37 嵌合部 S Spoon 3A Ball part 6a Back part 6b Abdomen 21 Mold 22 Die 24 Mold concave part 25 Back molding surface 28 Four peripheral parts 29 Fitting edge 32 Punch 33 Abdominal part forming surface 34 Four peripheral parts 35 Step edge 36 Concave R surface 37 Fitting part
フロントページの続き (72)発明者 小黒 努 新潟県燕市秋葉町三丁目21番5号 株式 会社 ノリタケ金属食器内 (56)参考文献 特開 平6−39464(JP,A) 特開 昭53−149864(JP,A) (58)調査した分野(Int.Cl.7,DB名) B21D 53/62 B21D 24/00 B21D 22/02 B21D 22/26 B21K 11/04 Continuation of the front page (72) Inventor Tsutomu Oguro 3-21-5 Akiha-cho, Tsubame-shi, Niigata Pref. Noritake Metal Tableware Co., Ltd. (56) References JP-A-6-39464 (JP, A) JP-A-53- 149864 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B21D 53/62 B21D 24/00 B21D 22/02 B21D 22/26 B21K 11/04
Claims (1)
ンチとからなる金型において、前記ダイの成形凹部の底
部側にボール部の背部に倣う曲面状の背部成形面を形成
し、この背部成形面の四周部位には所定の高さで立ち上
がる嵌合縁を形成し、また、前記ポンチの先端側は、前
記背部成形面と対応してボール部の腹部に倣う曲面状の
腹部成形面を形成するとともに、この腹部成形面の四周
部位はダイの四周部位と整合して形成され、該四周部位
にはダイの嵌合縁に指向して背部成形面と腹部成形面と
の間隔を封止する段差縁が形成されて、同段差縁と腹部
成形面との角部には所定の径の凹状R面を形成し、この
段差縁の端部にはダイの嵌合縁とスライド可能に嵌合す
る嵌合部を設ける構成としたことを特徴とするスプーン
成形用プレス金型。1. A die comprising a die for forming a ball portion of a spoon and a punch, a curved back forming surface following the back of the ball portion is formed on the bottom side of a forming recess of the die. Formed at the four circumferential portions of the surface are fitting edges that rise at a predetermined height, and the tip side of the punch forms a curved abdomen forming surface that follows the abdomen of the ball portion corresponding to the back forming surface. At the same time, the four peripheral parts of the abdominal molding surface are formed in alignment with the four peripheral parts of the die, and the four peripheral parts are directed to the fitting edge of the die and seal the gap between the back molding surface and the abdominal molding surface. A stepped edge is formed, and a concave R surface having a predetermined diameter is formed at a corner between the stepped edge and the abdomen forming surface, and an end of the stepped edge is slidably fitted with a fitting edge of a die. A press die for forming a spoon, characterized in that it has a configuration in which a fitting portion is provided.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP00780098A JP3350430B2 (en) | 1998-01-19 | 1998-01-19 | Press mold for spoon molding |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP00780098A JP3350430B2 (en) | 1998-01-19 | 1998-01-19 | Press mold for spoon molding |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11197773A JPH11197773A (en) | 1999-07-27 |
JP3350430B2 true JP3350430B2 (en) | 2002-11-25 |
Family
ID=11675721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP00780098A Expired - Fee Related JP3350430B2 (en) | 1998-01-19 | 1998-01-19 | Press mold for spoon molding |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3350430B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104493432A (en) * | 2014-11-21 | 2015-04-08 | 浙江金石家居用品有限公司 | Stainless steel tableware machining technology |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111715811A (en) * | 2020-06-19 | 2020-09-29 | 王生平 | Quick stamping equipment of metal soup ladle |
CN111702098B (en) * | 2020-06-22 | 2022-07-29 | 揭阳市雅达莉实业有限公司 | Stainless steel soup ladle punching machine |
-
1998
- 1998-01-19 JP JP00780098A patent/JP3350430B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104493432A (en) * | 2014-11-21 | 2015-04-08 | 浙江金石家居用品有限公司 | Stainless steel tableware machining technology |
Also Published As
Publication number | Publication date |
---|---|
JPH11197773A (en) | 1999-07-27 |
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