JP3671698B2

JP3671698B2 - Manufacturing method of laminated metal plate

Info

Publication number: JP3671698B2
Application number: JP28210398A
Authority: JP
Inventors: 広一須藤
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1998-10-05
Filing date: 1998-10-05
Publication date: 2005-07-13
Anticipated expiration: 2018-10-05
Also published as: JP2000107819A

Description

【０００１】
【発明の属する技術分野】
この発明は、金型で金属板を打ち抜き加工した中間加工品を積層して積層金属板の製造方法の改良に関するものである。
【０００２】
【従来の技術】
従来の積層金属板を図６によって説明する。図６は積層金属板の側面図である。図６において、積層金属板１０は、円柱状の凹部１２ａに対向する円柱状の凸部１２ｂを有する平板１２と、平板１２の凸部１２ｂを他の平板１２の凹部１２ａに圧入した平板１２と、最下層の平板１２の凸部１２ｂに底板１４の円径の孔１４ｅを圧入して固着されている。
【０００３】
ここで、平板１２の凹部１２ａの寸法は、凸部１２ｂを圧入するために、凸部１２ｂよりも僅かに例えば１〜５ミクロン小さく形成されており、底板１４の孔１４ｅの寸法は、平板１２の凹部１２ａと同一寸法に形成されている。
【０００４】
かかる積層金属板１０の製造方法を図７によって説明する。比較的長い金属板５を送り装置により金属板５の先端がＡの位置に送って停止してから、孔用パンチ２１と孔用ダイ３１により孔１４ｅを穿設する。次に、送り装置により金属板５が先端部がＢの位置に送り、即ち、凹凸用ダイ３３の中心まで送って停止し、凹凸用パンチ２３の先端部を金属板５の孔１４ｅに挿通する。なお、この工程では、孔用パンチ２１は下降しないように形成されている。
【０００５】
送り装置により金属板５を先端がＣの位置に送って停止してから、ブロックパンチ２５とブロックダイ３５とにより金属板５を切断して底板１４を形成し、同時に、凹凸用パンチ２３と凹凸用ダイ３３とにより金属板５に凹凸部を形成する（第３工程）。なお、この工程では、孔用パンチ２１は下降しないように形成されている。
【０００６】
再び、送り装置により金属板５を先端がＣの位置に送って停止してから、ブロックパンチ２５とブロックダイ３５とにより金属板５を切断して凹部１２ａと凸部１２ｂとを有する平板１２を形成し、同時に、ブロックダイ３５の凹部に平板１２を挿入して、底板１４の孔１４ｅに平板１２の凸部１２ｂを圧入する。かかる最終工程を繰り返して積層金属板１０が完成する。
【０００７】
【発明が解決しようとする課題】
しかしながら、特に、第２工程において、送り装置の送りピッチが僅かでも狂うと、図８に示すように底板１４の孔１４ｅがずれて、最下層の平板１２の凸部１２ｂと底板１４の孔１４ｅへの圧入が不十分となり、充分な固着力が得られないために底板１４が剥がれやすいという問題点があった。
【０００８】
この発明は、上記の課題を解決するためになされたもので、金属板が剥がれにくい積層金属板の製造方法を提供することを目的としている。
【０００９】
【課題を解決するための手段】
第１の発明に係る積層金属板の製造方法は、金属板に孔用パンチと孔用ダイとにより孔を穿設する第１の工程と、送り手段により上記金属板を所定量移動してから、上記金属板の孔に凹凸用パンチを下降する第２の工程と、上記送り手段により上記金属板を所定量移動してから、上記孔を有する金属板を切断用パンチと切断用ダイとにより切断して底板を得ると共に、上記切断用ダイの開口を有する空洞部に上記切断用パンチにより上記底板を収納し、且つ、上記凹凸用パンチと上記凹凸用ダイとにより上記金属板に上記孔よりも僅かに大きいと共に、片面側に凹部と他面側に凸部とを形成する第３の工程と、上記送り手段により上記金属板を所定量移動してから、上記凹部と凸部とを有する金属板を上記切断用パンチにより切断して平板を得て、上記空洞部に上記切断用パンチにより上記平板を収納すると共に、上記底板の孔に上記平板の凸部を圧入する第４の工程とを備え、上記第１から第４の工程を順に実行することを特徴とするものである。
【００１０】
第２の発明に係る積層金属板の製造方法は、孔用パンチと凹凸パンチと切断用パンチとを備え、金属板に孔用パンチと孔用ダイとにより孔を穿設する第１の工程と、送り手段により上記金属板を上記孔用パンチから上記凹凸パンチまで移動してから、上記孔を有する金属板を切断用パンチと切断用ダイとにより切断して底板を得ると共に、開口を有する空洞部に上記切断用パンチにより上記底板を収納し、且つ、凹凸用パンチと凹凸用ダイとにより上記金属板に凹部と凸部とを形成する第２の工程と、上記送り手段により上記金属板を上記凹凸パンチから上記切断用パンチまで移動してから、上記凹部と凸部とを有する金属板を上記切断用パンチと切断用ダイにより切断して平板を得て、上記切断用ダイの空洞部に上記切断用パンチにより上記平板を収納すると共に、上記底板の孔に上記平板の凸部を圧入する第３の工程とを備え、上記第１から第３の工程を順に実行することを特徴とするものである。
【００１１】
【発明の実施の形態】
実施の形態１．
この発明の一実施の形態を図１及び図２によって説明する。図１は、積層金属板の側面図、図２は底板の平面図及び断面図である。図１及び図２において、積層金属板１００は、円柱状の凹部１１２ａに対向する円柱状の凸部１１２ｂを有する平板１１２と、平板１１２の凸部１１２ｂを他の平板１１２の凹部１１２ａに圧入した平板１１２と、最下層の平板１１２の凸部１１２ｂに底板１１４の円径の孔１１４ｅを圧入して固着されている。
【００１２】
ここで、平板１１２の凹部１１２ａの寸法は、凸部１１２ｂを圧入するために、凸部１２ｂよりも僅かに例えば１〜５ミクロン小さく形成されており、底板１１４は、天面より直径Ｄ１の天部側孔１０１ａと、底面より直径Ｄ１よりも例えば１０〜１５ミクロンと僅かに小さい直径Ｄ３の底部側孔１０１ｅとから成る段差孔１１４ｈが形成されている。
【００１３】
次に、上記のように構成された積層金属板の製造方法を図３によって説明する。まず、比較的長い金属板５を孔用ダイ３０１，凹凸用ダイ３０３，切断用ダイ３０５とを有するダイプレートの左端部側の上に載せ、送り装置により金属板５の先端がＡの位置に送って停止してから、孔用パンチ２０１，凹凸用パンチ２０３，切断用パンチ２０５とを下降して、金属板５に孔１１４ｈを形成する（第１の工程）。
【００１４】
孔用パンチ２０１，凹凸用パンチ２０３，ブランク用パンチ２０５とを上昇して元の位置に復帰し、送り装置により金属板５の先端がＢの位置に送って停止してから、孔用パンチ３０１はそのままの位置で、凹凸用パンチ３０３，切断用パンチ３０５とを下降すると、金属板５に孔１１４ｈに凹凸用パンチ３０３の先端部が挿通する（第２の工程）。
【００１５】
凹凸用パンチ２０３，切断用パンチ２０５を上昇して元の位置に復帰し、送り装置により金属板５の先端がＣの位置に停止してから、孔用パンチ２０１はそのままの位置で、凹凸用パンチ２０３，切断用パンチ２０５とを下降して、金属板５に凹部１１２ａを有する凸部１１２ｂを形成すると共に、孔１１４ｈを有する底板１１４が切り落とされ、切断用ダイ３０５の開口を有する空洞部３０５ａに切断用パンチ３０５により底板１１４を収納する（第３の工程）。
【００１６】
凹凸用パンチ２０３，切断用パンチ２０５を上昇して元の位置に復帰し、送り装置により金属板５の先端がＣの位置に停止してから、孔用パンチ２０１はそのままの位置で、凹凸用パンチ２０３，切断用パンチ２０５とを下降して、金属板５に凹部１１２ａを有する凸部１１２ｂを形成した平板１１２が切り落とされ、切断用ダイ３０５の開口を有する空洞部３０５ａに切断用パンチ３０５により平板１１２を収納すると共に、底板１１４の孔１１４ｈに平板１１２の凸部１１２ｂを圧入する（第４の工程）。
【００１７】
凹凸用パンチ２０３，切断用パンチ２０５を上昇して元の位置に復帰し、送り装置により金属板５の先端がＣの位置に停止してから、孔用パンチ２０１はそのままの位置で、凹凸用パンチ２０３，切断用パンチ２０５とを下降して、金属板５に凹部１１２ａを有する凸部１１２ｂを形成した平板１１２が切り落とされ、切断用ダイ３０５の開口を有する空洞部３０５ａに切断用パンチ３０５により平板１１２を収納すると共に、平板１１２の凹部１１２ａに他の平板１１２の凸部１１２ｂを圧入する（第５の工程）。かかる第５の工程をＮ回繰り返して、平板１１２をＮ＋１層形成して積層金属板１００ができあがる。
【００１８】
送り装置の送りピッチが僅かにずれ、図４に示すように底板１１４の孔１１４ｅに重ねて凹部１１４ａが形成されても、孔１１４ｅの直径Ｄ３と凹部１１４ａの直径Ｄ１とがＤ１＞Ｄ３の関係にあるため、底板１１４の孔１１４ｈに平板１１２の凸部１１２ｂが圧入される。よって、底板１１４と平板１１２とが充分に固着される。
【００１９】
実施の形態２．
この発明の他の実施の形態である積層金属板１００の製造方法を図５によって説明する。上記実施の形態１と同様に第１の工程を実行し、送り装置により金属板５の先端をＢの位置に送って停止してから、孔１１４ｈを有する金属板５を切断用パンチ２０５と切断用ダイ３０５とにより切断して底板１１４を得ると共に、切断用ダイ３０３の開口を有する空洞部３０５ａに切断用パンチ３０１により底板１１４を収納し、且つ、凹凸用パンチ２０３と凹凸用ダイ２０５とにより金属板５に凹部１１２ａと凸部１１２ｂとを形成する（第２の工程）。
【００２０】
送り装置により金属板５の先端がＢの位置に送って停止してから、凹部１１２ａと凸部１１２ｂとを有する金属板５を切断用パンチ２０５と切断用ダイ３０５により切断して平板１１２を得て、切断用ダイ３０５の空洞部３０５ａに切断用パンチ２０５により平板１１２を収納すると共に、底板１１４の孔１１４ｈに平板１１２の凸部１１２ｂを圧入する（第３の工程）。かかる第３の工程をＮ回繰り返して、平板１１２をＮ＋１層形成して積層金属板１００ができあがる。
【００２１】
金属板５の孔１１４ｈの上に、凹凸用パンチ２０３が下降することなく、金属板５を切断用パンチ２０５により切断して底板１１４を形成するので、底板１１４の孔１１４ｈに凹凸用パンチ２０３で、凹部が形成されないため底板１１４と平板１１２とが充分に固着される。
【００２２】
【発明の効果】
第１の発明によれば、金属板に孔用パンチと孔用ダイとにより孔を穿設する第１の工程と、送り手段により上記金属板を所定量移動してから、上記金属板の孔に凹凸用パンチを下降する第２の工程と、上記送り手段により上記金属板を所定量移動してから、上記孔を有する金属板を切断用パンチと切断用ダイとにより切断して底板を得ると共に、上記切断用ダイの開口を有する空洞部に上記切断用パンチにより上記底板を収納し、且つ、上記凹凸用パンチと上記凹凸用ダイとにより上記金属板に上記孔よりも僅かに大きいと共に、片面側に凹部と他面側に凸部とを形成する第３の工程と、上記送り手段により上記金属板を所定量移動してから、上記凹部と凸部とを有する金属板を上記切断用パンチにより切断して平板を得て、上記空洞部に上記切断用パンチにより上記平板を収納すると共に、上記底板の孔に上記平板の凸部を圧入する第４の工程とを備え、上記第１から第４の工程を順に実行したので、底板の孔に平板の凸部が充分に圧入されるから、底板と平板とが充分に固着される積層金属板が得られるという効果がある。
【００２３】
第２の発明によれば、孔用パンチと凹凸パンチと切断用パンチとを備え、金属板に孔用パンチと孔用ダイとにより孔を穿設する第１の工程と、送り手段により上記金属板を上記孔用パンチから上記凹凸パンチまで移動してから、上記孔を有する金属板を切断用パンチと切断用ダイとにより切断して底板を得ると共に、開口を有する空洞部に上記切断用パンチにより上記底板を収納し、且つ、凹凸用パンチと凹凸用ダイとにより上記金属板に凹部と凸部とを形成する第２の工程と、上記送り手段により上記金属板を上記凹凸パンチから上記切断用パンチまで移動してから、上記凹部と凸部とを有する金属板を上記切断用パンチと切断用ダイにより切断して平板を得て、上記切断用ダイの空洞部に上記切断用パンチにより上記平板を収納すると共に、上記底板の孔に上記平板の凸部を圧入する第３の工程とを備え、上記第１から第３の工程を順に実行したので、底板の孔に凹凸用パンチで、凹部が形成されないため底板と平板とが充分に固着される積層金属板が得られるという効果がある。
【図面の簡単な説明】
【図１】この発明の一実施の形態を示す積層金属板の側面図である。
【図２】図１に示す積層金属板を形成する底板の平面図及び断面図である。
【図３】図１に示す積層金属板を形成する平板及び底板を製造する装置の一部断面を含む正面図である。
【図４】この発明の一実施の形態を示す底板の平面図である。
【図５】この発明の他の実施の形態を示す積層金属板を形成する平板及び底板を製造する装置の一部断面を含む正面図である。
【図６】従来の積層金属板の側面図である。
【図７】図６の積層金属板の製造工程を説明する説明図である。
【図８】図６の積層金属板を形成する底板の平面図である。
【符号の説明】
５金属板、１１２平板、１１２ａ凹部、１１２ｂ凸部、１１４底板、１１４ｅ孔、２０１孔用パンチ、２０３凹凸用パンチ、２０５切断用パンチ、３０１孔用ダイ、３０３凹凸用ダイ、３０５切断用ダイ、３０５ａ空洞部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a method for manufacturing a laminated metal plate by laminating intermediate processed products obtained by punching a metal plate with a mold.
[0002]
[Prior art]
A conventional laminated metal plate will be described with reference to FIG. FIG. 6 is a side view of the laminated metal plate. In FIG. 6, the laminated metal plate 10 includes a flat plate 12 having a columnar convex portion 12 b facing the columnar concave portion 12 a, and a flat plate 12 in which the convex portion 12 b of the flat plate 12 is press-fitted into the concave portion 12 a of another flat plate 12. The circular hole 14e of the bottom plate 14 is press-fitted and fixed to the convex portion 12b of the lowermost flat plate 12.
[0003]
Here, the size of the concave portion 12a of the flat plate 12 is slightly smaller than the convex portion 12b by, for example, 1 to 5 microns in order to press-fit the convex portion 12b, and the size of the hole 14e of the bottom plate 14 is the flat plate 12. Are formed in the same dimensions as the recess 12a.
[0004]
A method of manufacturing the laminated metal plate 10 will be described with reference to FIG. After a relatively long metal plate 5 is stopped by feeding the tip of the metal plate 5 to the position A by the feeding device, the hole 14e is formed by the hole punch 21 and the hole die 31. Next, the feeding device feeds the metal plate 5 to the position of the tip B of the metal plate, that is, feeds it to the center of the concave / convex die 33 and stops, and inserts the tip of the concave / convex punch 23 into the hole 14e of the metal plate 5. . In this step, holes punches 2 1 is formed so as not to fall.
[0005]
After the metal plate 5 is stopped by feeding the metal plate 5 to the position C by the feeding device, the metal plate 5 is cut by the block punch 25 and the block die 35 to form the bottom plate 14. An uneven portion is formed on the metal plate 5 by the die 33 for use (third step). In this step, holes punches 2 1 is formed so as not to fall.
[0006]
The metal plate 5 is again sent to the position C by the feeding device and stopped. Then, the metal plate 5 is cut by the block punch 25 and the block die 35 to form the flat plate 12 having the concave portion 12a and the convex portion 12b. At the same time, the flat plate 12 is inserted into the concave portion of the block die 35, and the convex portion 12 b of the flat plate 12 is press-fitted into the hole 14 e of the bottom plate 14. Such a final process is repeated to complete the laminated metal plate 10.
[0007]
[Problems to be solved by the invention]
However, in particular, in the second step, if the feeding pitch of the feeding device is slightly deviated, the holes 14e of the bottom plate 14 are displaced as shown in FIG. 8, and the convex portions 12b of the lowermost flat plate 12 and the holes 14e of the bottom plate 14 are displaced. There is a problem that the bottom plate 14 is easily peeled off due to insufficient press-fitting to the surface and a sufficient fixing force cannot be obtained.
[0008]
This invention was made in order to solve said subject, and it aims at providing the manufacturing method of the laminated metal plate which a metal plate cannot peel easily.
[0009]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a laminated metal plate manufacturing method comprising: a first step of forming a hole in a metal plate with a hole punch and a hole die; and the metal plate is moved by a predetermined amount by a feeding means. A second step of lowering the concave / convex punch into the hole of the metal plate, and the metal plate is moved by a predetermined amount by the feeding means, and then the metal plate having the hole is removed by a cutting punch and a cutting die. The bottom plate is obtained by cutting, and the bottom plate is accommodated in the cavity having the opening of the cutting die by the cutting punch, and the metal plate is inserted into the metal plate by the concave and convex punches and the concave and convex die. A third step of forming a concave portion on one side and a convex portion on the other side, and moving the metal plate by a predetermined amount by the feeding means, and then having the concave portion and the convex portion. Cut the metal plate with the above cutting punch to The flat plate is housed in the hollow portion by the cutting punch, and the convex portion of the flat plate is press-fitted into the hole of the bottom plate, and the first to fourth steps are sequentially executed. It is characterized by doing.
[0010]
A method for manufacturing a laminated metal plate according to a second invention includes a first step of providing a hole punch, an uneven punch, and a cutting punch, and forming a hole in the metal plate with a hole punch and a hole die. The metal plate is moved from the hole punch to the concave / convex punch by the feeding means, and then the metal plate having the hole is cut with a cutting punch and a cutting die to obtain a bottom plate and a cavity having an opening A second step in which the bottom plate is housed in the part by the cutting punch, and the concave and convex portions are formed on the metal plate by the concave and convex punch and the concave and convex die, and the metal plate is moved by the feeding means. move from top Symbol irregularities punch until the cutting punch, the metal plate having the above-described concave portions and convex portions to give a flat plate by cutting by a cutting die and the cutting punch, the cavity of the cutting die On the cutting punch above With housing the flat plate, and a third step of press-fitting the convex portion of the flat plate hole of the bottom plate, is characterized in that the run from the first to third steps in order.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side view of a laminated metal plate, and FIG. 2 is a plan view and a cross-sectional view of a bottom plate. 1 and FIG. 2, the laminated metal plate 100 press-fits the flat plate 112 having the cylindrical convex portion 112b facing the cylindrical concave portion 112a and the convex portion 112b of the flat plate 112 into the concave portion 112a of the other flat plate 112. A circular hole 114e of the bottom plate 114 is press-fitted and fixed to the flat plate 112 and the convex portion 112b of the lowermost flat plate 112.
[0012]
Here, the size of the concave portion 112a of the flat plate 112 is slightly smaller than the convex portion 12b by, for example, 1 to 5 microns in order to press-fit the convex portion 112b, and the bottom plate 114 has a top surface with a diameter D1 from the top surface. A step hole 114h is formed which includes a part side hole 101a and a bottom part side hole 101e having a diameter D3 slightly smaller than the diameter D1 by, for example, 10 to 15 microns from the bottom surface.
[0013]
Next, the manufacturing method of the laminated metal plate comprised as mentioned above is demonstrated with FIG. First, a relatively long metal plate 5 is placed on the left end side of a die plate having a hole die 301, an uneven die 303, and a cutting die 305, and the tip of the metal plate 5 is moved to the position A by a feeding device. stop sending, hole punches 2 01, for unevenness punch 2 03, is lowered and the cutting punch 2 05, to form the hole 114h in the metal plate 5 (first step).
[0014]
The hole punch 201, the concave / convex punch 203, and the blank punch 205 are raised and returned to their original positions. After the leading end of the metal plate 5 is sent to the position B by the feeder and stopped, the hole punch 301 is stopped. When the concavo-convex punch 303 and the cutting punch 305 are lowered at the same position, the tip of the concavo-convex punch 303 is inserted into the hole 114h in the metal plate 5 (second step).
[0015]
After the concave / convex punch 203 and the cutting punch 205 are raised and returned to their original positions, and the leading end of the metal plate 5 is stopped at the position C by the feeding device, the hole punch 201 remains at the same position as the concave / convex The punch 203 and the cutting punch 205 are lowered to form the convex portion 112b having the concave portion 112a on the metal plate 5, and the bottom plate 114 having the hole 114h is cut off, and the hollow portion 305a having the opening of the cutting die 305 is formed. The bottom plate 114 is accommodated by the cutting punch 305 (third step).
[0016]
After the concave / convex punch 203 and the cutting punch 205 are raised and returned to their original positions, and the leading end of the metal plate 5 is stopped at the position C by the feeding device, the hole punch 201 remains at the same position as the concave / convex The punch 203 and the cutting punch 205 are lowered, and the flat plate 112 formed with the convex portion 112b having the concave portion 112a on the metal plate 5 is cut off. While storing the flat plate 112, the convex part 112b of the flat plate 112 is press-fit in the hole 114h of the bottom plate 114 (4th process).
[0017]
After the concave / convex punch 203 and the cutting punch 205 are raised and returned to their original positions, and the leading end of the metal plate 5 is stopped at the position C by the feeding device, the hole punch 201 remains at the same position as the concave / convex The punch 203 and the cutting punch 205 are lowered, and the flat plate 112 formed with the convex portion 112b having the concave portion 112a on the metal plate 5 is cut off, and the hollow portion 305a having the opening of the cutting die 305 is cut by the cutting punch 305. While storing the flat plate 112, the convex part 112b of the other flat plate 112 is press-fit in the recessed part 112a of the flat plate 112 (5th process). By repeating this fifth step N times, N + 1 layers of the flat plate 112 are formed, and the laminated metal plate 100 is completed.
[0018]
Even if the feed pitch of the feed device is slightly shifted and the recess 114a is formed so as to overlap the hole 114e of the bottom plate 114 as shown in FIG. 4, the relationship between the diameter D3 of the hole 114e and the diameter D1 of the recess 114a is D1> D3. Therefore, the convex 112b of the flat plate 112 is press-fitted into the hole 114h of the bottom plate 114. Therefore, the bottom plate 114 and the flat plate 112 are sufficiently fixed.
[0019]
Embodiment 2. FIG.
The manufacturing method of the laminated metal plate 100 which is other embodiment of this invention is demonstrated with reference to FIG. The first step is performed in the same manner as in the first embodiment, and the leading end of the metal plate 5 is sent to the position B by the feeding device and stopped. Then, the metal plate 5 having the hole 114h is cut with the cutting punch 205. The bottom plate 114 is obtained by cutting with the cutting die 305, and the bottom plate 114 is accommodated by the cutting punch 301 in the hollow portion 305a having the opening of the cutting die 303, and the concave / convex punch 203 and the concave / convex die 205 are used. Concave portions 112a and convex portions 112b are formed in the metal plate 5 (second step).
[0020]
After the leading end of the metal plate 5 is fed to the position B by the feeding device and stopped, the metal plate 5 having the concave portions 112a and the convex portions 112b is cut by the cutting punch 205 and the cutting die 305 to obtain the flat plate 112. Then, the flat plate 112 is accommodated in the hollow portion 305a of the cutting die 305 by the cutting punch 205, and the convex portion 112b of the flat plate 112 is press-fitted into the hole 114h of the bottom plate 114 (third step). By repeating the third step N times, N + 1 layers of the flat plate 112 are formed, and the laminated metal plate 100 is completed.
[0021]
Since the bottom plate 114 is formed by cutting the metal plate 5 by the cutting punch 205 without the concave / convex punch 203 descending on the hole 114h of the metal plate 5, the concave / convex punch 203 is formed in the hole 114h of the bottom plate 114. Since the concave portion is not formed, the bottom plate 114 and the flat plate 112 are sufficiently fixed.
[0022]
【The invention's effect】
According to the first invention, the first step of drilling a hole in the metal plate by the hole punch and the hole die, and the metal plate is moved by a predetermined amount by the feeding means, and then the hole of the metal plate is formed. A second step of lowering the concave / convex punch, and a predetermined amount of the metal plate is moved by the feeding means, and then the metal plate having the holes is cut by a cutting punch and a cutting die to obtain a bottom plate. In addition, the bottom plate is accommodated by the cutting punch in a cavity having an opening of the cutting die, and the metal plate is slightly larger than the hole by the uneven punch and the uneven die , A third step of forming a concave portion on one side and a convex portion on the other surface side, and moving the metal plate by a predetermined amount by the feeding means, and then cutting the metal plate having the concave portion and the convex portion for the cutting. A flat plate is obtained by cutting with a punch. Since the flat plate is housed by the cutting punch, and the fourth step of press-fitting the convex portion of the flat plate into the hole of the bottom plate is performed, and the first to fourth steps are executed in order. Since the convex portions of the flat plate are sufficiently press-fitted, there is an effect that a laminated metal plate in which the bottom plate and the flat plate are sufficiently fixed can be obtained.
[0023]
According to the second invention, there is provided a first step of providing a hole punch, an uneven punch, and a cutting punch, and forming a hole in the metal plate by the hole punch and the hole die, and the metal by the feeding means. After the plate is moved from the hole punch to the concave / convex punch , the metal plate having the hole is cut by a cutting punch and a cutting die to obtain a bottom plate, and the cutting punch is formed in a cavity having an opening. by accommodating the bottom plate, and, the second step of the concave and convex punch and uneven die to form a concave and convex portions on the metal plate, the metal plate by the feed means from above Symbol uneven punch After moving to the cutting punch, the metal plate having the concave and convex portions is cut with the cutting punch and the cutting die to obtain a flat plate, and the cutting die is inserted into the cavity of the cutting die with the cutting punch. When the flat plate is stored, And the third step of press-fitting the convex portion of the flat plate into the hole of the bottom plate, and the first to third steps are executed in order, so that the concave portion is not formed in the hole of the bottom plate by the punch for unevenness. There is an effect that a laminated metal plate in which the bottom plate and the flat plate are sufficiently fixed can be obtained.
[Brief description of the drawings]
FIG. 1 is a side view of a laminated metal plate showing an embodiment of the present invention.
2 is a plan view and a cross-sectional view of a bottom plate forming the laminated metal plate shown in FIG. 1. FIG.
3 is a front view including a partial cross section of an apparatus for manufacturing a flat plate and a bottom plate forming the laminated metal plate shown in FIG. 1. FIG.
FIG. 4 is a plan view of a bottom plate showing an embodiment of the present invention.
FIG. 5 is a front view including a partial cross section of an apparatus for producing a flat plate and a bottom plate forming a laminated metal plate according to another embodiment of the present invention.
FIG. 6 is a side view of a conventional laminated metal plate.
7 is an explanatory view illustrating a manufacturing process of the laminated metal plate in FIG. 6. FIG.
8 is a plan view of a bottom plate forming the laminated metal plate of FIG. 6. FIG.
[Explanation of symbols]
5 Metal plate, 112 flat plate, 112a concave portion, 112b convex portion, 114 bottom plate, 114e hole, 201 hole punch, 203 uneven punch, 205 cutting punch, 301 hole die, 303 uneven die, 305 cutting die, 305a Cavity.

Claims

A first step of drilling a hole in the metal plate with a hole punch and a hole die, and a step of moving the metal plate by a predetermined amount by the feeding means and then lowering the concave / convex punch into the hole in the metal plate. 2 and moving the metal plate by a predetermined amount by the feeding means, then cutting the metal plate having the holes with a cutting punch and a cutting die to obtain a bottom plate, and opening the cutting die The bottom plate is accommodated in the hollow portion having the cutting punch, and the metal plate is slightly larger than the hole by the concave / convex punch and the concave / convex die, and the concave portion and the other side are provided on one side. A third step of forming a convex portion on the surface, and moving the metal plate by a predetermined amount by the feeding means, and then cutting the metal plate having the concave portion and the convex portion by the cutting punch to obtain a flat plate. And by using the cutting punch in the cavity And a fourth step of press-fitting the convex portion of the flat plate into the hole of the bottom plate, and sequentially performing the first to fourth steps. Method.

It has a punch for holes, an uneven punch, and a punch for cutting,
A first step of drilling a hole in the metal plate with a hole punch and a hole die, and a metal plate having the hole after the metal plate is moved from the hole punch to the concave / convex punch by a feeding means. Is cut with a cutting punch and a cutting die to obtain a bottom plate, and the bottom plate is accommodated in the cavity having an opening with the cutting punch, and the metal plate is formed with the concave and convex punch and the concave and convex die. a second step of forming a concave portion and the convex portion, move the metal plate from top Symbol irregularities punch until the cutting punches by said feeding means, said cutting the metal plate having the aforementioned recesses and projections A flat plate is obtained by cutting with a punch for cutting and a cutting die, and the flat plate is accommodated in the cavity of the cutting die with the punch for cutting, and a convex portion of the flat plate is press-fitted into the hole of the bottom plate. And comprising the above steps Method for producing a laminated metal sheet, characterized in that from 1 to execute the third process step by step.