JP6867722B1 - Bottom cam device - Google Patents

Bottom cam device Download PDF

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JP6867722B1
JP6867722B1 JP2020120803A JP2020120803A JP6867722B1 JP 6867722 B1 JP6867722 B1 JP 6867722B1 JP 2020120803 A JP2020120803 A JP 2020120803A JP 2020120803 A JP2020120803 A JP 2020120803A JP 6867722 B1 JP6867722 B1 JP 6867722B1
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cam
contact portion
attached
contact
cam slider
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JP2022017936A (en
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厚志 森田
厚志 森田
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Sankyo Oilless Industries Inc
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Abstract

【課題】 ピアスパンチの位置決めを行うことができる下置きカム装置を提供する。【解決手段】 下型に取り付けられたカムホルダ部と、ワークを加工する加工工具が設置可能であり、カムホルダ部に第1方向に摺動可能に取り付けられたカムスライダー部と、上型に取り付けられ、カムスライダー部を第1方向に駆動するためのカムドライバー部と、を有し、カム角度が60°以上89°以下である。【選択図】 図1PROBLEM TO BE SOLVED: To provide a lower cam device capable of positioning a pierced punch. SOLUTION: A cam holder portion attached to a lower mold and a processing tool for processing a work can be installed, and a cam slider portion slidably attached to the cam holder portion in a first direction and attached to an upper mold. It has a cam driver unit for driving the cam slider unit in the first direction, and the cam angle is 60 ° or more and 89 ° or less. [Selection diagram] Fig. 1

Description

本発明は、下置きカム装置に関するものである。 The present invention relates to a bottom cam device.

自動車のボディ等の大型金属製板は下側の固定金型と上側の移動金型とによりプレス成型される。プレス成型と同時に、プレス成型品の側面に孔を穿設したり縁部を屈曲させたりするために、金型内に設置可能なカム装置が用いられる。 Large metal plates such as automobile bodies are press-molded by a lower fixed die and an upper moving die. At the same time as press molding, a cam device that can be installed in the mold is used to make holes on the side surfaces of the press molded product and to bend the edges.

下置きカム装置は、例えば、下型に取り付けられるカムホルダと、ワークを加工する加工工具が設置可能であり、カムホルダに加工方向に摺動可能に取り付けられたカムスライダーと、上型に取り付けられ、カムスライダーを加工方向に駆動するカムドライバーとを有する(例えば、特許文献1及び特許文献2参照)。 The lower cam device can be equipped with, for example, a cam holder attached to the lower mold and a machining tool for machining the work, and a cam slider attached to the cam holder so as to be slidable in the machining direction, and attached to the upper mold. It has a cam driver that drives the cam slider in the machining direction (see, for example, Patent Document 1 and Patent Document 2).

特開2006-272369号公報Japanese Unexamined Patent Publication No. 2006-272369 特開2008-188655号公報Japanese Unexamined Patent Publication No. 2008-188655

特許文献1や特許文献2に示すような、従来の下置きカム装置のカム角度は20°以下であった。したがって、カム角度が20°以上必要な場合には、吊りカム装置を用いていた。しかしながら、このような従来の吊りカム装置は、カム角度が50°を超えたあたりからカムドライバーにカムスライダーを載せて行うピアス合わせが難しかった。 As shown in Patent Document 1 and Patent Document 2, the cam angle of the conventional lower cam device is 20 ° or less. Therefore, when a cam angle of 20 ° or more is required, a hanging cam device is used. However, in such a conventional hanging cam device, it is difficult to adjust the piercing by mounting the cam slider on the cam driver when the cam angle exceeds 50 °.

すなわち、吊りカム装置におけるピアスパンチの位置合わせは、固定されたカムドライバーに、カムホルダから取り外したカムスライダーをセットしてピアスパンチの位置決めを行う。このため、カムスライダーをカムドライバーに人手等で押し付けていないとカムスライダーが前方へ回転してしまい、位置合わせが困難であった。 That is, for the positioning of the pierced punch in the hanging cam device, the cam slider removed from the cam holder is set on the fixed cam driver to position the pierced punch. Therefore, if the cam slider is not manually pressed against the cam driver, the cam slider will rotate forward, making it difficult to align the cam slider.

本発明は、このような従来の問題を解決するためになされたもので、ピアスパンチの位置決めを行うことが可能な下置きカム装置を提供することにある。 The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a lower cam device capable of positioning a pierced punch.

本発明の下置きカムは、下型に取り付けられたカムホルダ部と、ワークを加工する加工工具が設置可能であり、カムホルダ部に第1方向に摺動可能に取り付けられたカムスライダー部と、上型に取り付けられ、カムスライダー部を第1方向に駆動するためのカムドライバー部と、を有し、カムドライバー部に固定され、第1当接部を有する第1部材と、カムスライダー部に、カムスライダー部の動作に伴って動作可能に取り付けられ、一端に第1当接部と当接するための第2当接部を有する第2部材と、を有する強制戻し部をさらに有し、強制戻し時には、第1当接部と第2当接部が当接し、第2部材がカムスライダー部に離脱力を伝達し、第2部材は、カムホルダ部の所定位置を回転中心として、円弧状に揺動可能にカムスライダー部に取り付けられる。 In the lower cam of the present invention, a cam holder portion attached to the lower mold, a processing tool for processing a workpiece can be installed, a cam slider portion slidably attached to the cam holder portion in the first direction, and an upper part. A first member that is attached to a mold and has a cam driver portion for driving the cam slider portion in the first direction, is fixed to the cam driver portion, and has a first contact portion, and a cam slider portion. It is operably attached with the operation of the cam slider portion, and further has a forced return portion having a second member having a second contact portion for abutting with the first contact portion at one end, and forcibly returning. Occasionally, the first contact portion and the second contact portion come into contact with each other, the second member transmits a detaching force to the cam slider portion, and the second member swings in an arc shape with the predetermined position of the cam holder portion as the center of rotation. rotatably the Ru attached to the cam slider unit.

本発明の下置きカム装置によれば、カム角度が60°以上でもピアスパンチの位置決めを行うことが可能となる。 According to the lower cam device of the present invention, the piercing punch can be positioned even when the cam angle is 60 ° or more.

下置きカム装置を示す図である。It is a figure which shows the lower cam device. カム線図を示す図である。It is a figure which shows the cam diagram. 下置きカム装置の斜視図である。It is a perspective view of the lower cam device. 強制戻し部の動作を示す図である。It is a figure which shows the operation of the forced return part. 下置きカム装置を示す図である。It is a figure which shows the lower cam device. 図5(b)のA−A断面図である。5A is a cross-sectional view taken along the line AA of FIG. 5B. 強制戻し部の動作を示す図である。It is a figure which shows the operation of the forced return part.

以下、実施形態である下置きカム装置について、図を参照して詳細に説明をする。なお、下置きカム装置の公知の構成については説明を適宜省略する。 Hereinafter, the lower cam device according to the embodiment will be described in detail with reference to the drawings. The description of the known configuration of the lower cam device will be omitted as appropriate.

図1は、下置きカム装置1を示す図である。 FIG. 1 is a diagram showing a lower cam device 1.

図1に示すように、下置きカム装置1は、固定金型(下型、不図示)等に固定されたカムホルダ部100と、カムホルダ部100に摺動可能に支持され、弾性部材で戻り方向に付勢されて、所定のストロークで加工方向に往復動作し、加工方向の所定の側面に加工工具(不図示)が取り付くカムスライダー部200と、移動金型(上型、不図示)等に固定され、カムスライダー部200を所定の加工方向に駆動するためのカムドライバー部300と、を有する。 As shown in FIG. 1, the lower cam device 1 is slidably supported by a cam holder portion 100 fixed to a fixed mold (lower mold, not shown) and the cam holder portion 100, and is supported by an elastic member in a return direction. A cam slider unit 200 that reciprocates in the machining direction with a predetermined stroke and has a machining tool (not shown) attached to a predetermined side surface in the machining direction, and a moving die (upper die, not shown). It is fixed and has a cam driver unit 300 for driving the cam slider unit 200 in a predetermined machining direction.

図2は、下置きカム装置1のカム線図(カムダイアグラムともいう)である。図に示すように、カム線図は三角形状となる。図中の辺Aは、カムドライバー部300に対するカムスライダー部200の動作方向(図では水平)及び動作量を示す。図中の辺Bは、カムホルダ部100に対するカムスライダー部200の動作方向及び動作量を示す。図中の辺Cは、カムホルダ部100に対するカムドライバー部300の動作方向(図では垂直)及び動作量を示す。 FIG. 2 is a cam diagram (also referred to as a cam diagram) of the lower cam device 1. As shown in the figure, the cam diagram has a triangular shape. Side A in the figure indicates the operation direction (horizontal in the figure) and the amount of operation of the cam slider unit 200 with respect to the cam driver unit 300. Side B in the figure indicates the operating direction and the operating amount of the cam slider unit 200 with respect to the cam holder unit 100. Side C in the figure indicates the operation direction (vertical in the figure) and the amount of operation of the cam driver unit 300 with respect to the cam holder unit 100.

実施形態の下置きカム装置1のカム線図の辺Bと水平軸(図2では辺A)がなす角度(以下、カム角度という)は、60°以上89°以下である(図2では75°である)。 The angle (hereinafter referred to as the cam angle) formed by the side B of the cam diagram of the lower cam device 1 of the embodiment and the horizontal axis (side A in FIG. 2) is 60 ° or more and 89 ° or less (75 in FIG. 2). °).

下置きカム装置1のカムスライダー部200は、カムホルダ部100にガイドされている。このため、カム角度が60°以上89°以下の高角度であっても、安定してスライドができ、ピアス合わせが容易である。 The cam slider portion 200 of the lower cam device 1 is guided by the cam holder portion 100. Therefore, even if the cam angle is a high angle of 60 ° or more and 89 ° or less, stable sliding is possible and piercing adjustment is easy.

次に、強制戻し機構について説明する。ピアスで穴をあけた後にピアスがパネルに引っかかった場合に、カムスライダーが上昇動作しないことがある。強制戻し機構は、この場合に、カムスライダーを機械的係合により、強制的に加工位置から初期位置へ離脱させる機構である。 Next, the forced return mechanism will be described. If the pierced earring gets caught in the panel after making a hole with the pierced earring, the cam slider may not move up. In this case, the forced return mechanism is a mechanism for forcibly disengaging the cam slider from the machining position to the initial position by mechanical engagement.

ここで、カム角度が70°を超えたあたりからカムスライダー部200の水平動作量(図2の辺A)が小さくなる。このため、強制戻しの掛かり量がわずかとなり、強制戻しが成立しにくくなる。強制戻しが成立しない場合には、ピアスで穴をあけた後にピアスがパネルに引っかかった場合に、カムスライダーが上に戻らないおそれがある。 Here, the horizontal movement amount (side A in FIG. 2) of the cam slider portion 200 becomes smaller when the cam angle exceeds 70 °. Therefore, the amount of forced return is small, and it becomes difficult for forced return to be established. If the forced return is not established, the cam slider may not return upward if the pierced earring is caught on the panel after making a hole with the pierced earring.

図3は、下置きカム装置の斜視図である。図に示すように、下置きカム装置1は、強制戻し機構400を有する。 FIG. 3 is a perspective view of the lower cam device. As shown in the figure, the lower cam device 1 has a forced return mechanism 400.

強制戻し機構400は、第1プレート401と第2プレート402とを有する。第1プレート401は、カムドライバー部300に上部が固定され、下部に第2プレート402との当接部となる当接部401a(請求の範囲では第1当接部)を有する。 The forced return mechanism 400 has a first plate 401 and a second plate 402. The upper portion of the first plate 401 is fixed to the cam driver portion 300, and the first plate 401 has a contact portion 401a (first contact portion in the claims) which is a contact portion with the second plate 402 at the lower portion.

第2プレート402は、一端に回転用穴402aと、中間部に揺動用長穴402bと、他端に第1プレート401の当接部401aとの当接部となる当接部402c(請求の範囲では第2当接部)と、を有する。回転用穴402aにブッシュやボルトが挿入され、第2プレート402は、カムホルダ部100の所定位置に回転可能に固定される。 The second plate 402 has a rotating hole 402a at one end, a swinging elongated hole 402b at the intermediate portion, and an abutting portion 402c (claimed) which is an abutting portion between the abutting portion 401a of the first plate 401 at the other end. In the range, it has a second contact portion). A bush or a bolt is inserted into the rotation hole 402a, and the second plate 402 is rotatably fixed at a predetermined position of the cam holder portion 100.

揺動用長穴402bには、カムスライダー部200に固定されたヒンジピン201が挿入され、第2プレート402は、カムスライダー部200に揺動可能に取り付けられる。後述するように、ピアスがパネルに引っかかった場合に、当接部402cは、第1プレート401の当接部401aと当接する。これにより、当接部402cには、第1プレート401の上昇に伴う当接部401aからの力が作用し、揺動用長穴402b及びヒンジピン201を介してカムスライダー部200に上昇力を与える。第2プレート402は回転用穴402aを回転中心として(すなわち、第2プレート402のカムホルダ部100への固定位置を回転中心として)、円弧状に揺動する。 A hinge pin 201 fixed to the cam slider portion 200 is inserted into the swinging slot 402b, and the second plate 402 is swingably attached to the cam slider portion 200. As will be described later, when the pierced earring is caught on the panel, the contact portion 402c comes into contact with the contact portion 401a of the first plate 401. As a result, a force from the abutting portion 401a that accompanies the ascending of the first plate 401 acts on the abutting portion 402c, and an ascending force is applied to the cam slider portion 200 via the swinging elongated hole 402b and the hinge pin 201. The second plate 402 swings in an arc shape with the rotation hole 402a as the rotation center (that is, the fixed position of the second plate 402 to the cam holder portion 100 as the rotation center).

図4は、カムスライダー部200の動作に伴う強制戻し部400の動作を示す。図4に示すように、強制戻し部はカムスライダ―部の動作に伴って動作する。図4(a)に示すように、上型等(不図示)が下降する(図のx1方向)と、上型等に取りつけられたカムドライバー部300も下降する。また、カムスライダー部200のツール取付部200aにはピアス等の工具(不図示)が取り付けられる。なお、ツールはピアスに限られない。 FIG. 4 shows the operation of the forced return unit 400 accompanying the operation of the cam slider unit 200. As shown in FIG. 4, the forced return unit operates in association with the operation of the cam slider unit. As shown in FIG. 4A, when the upper mold or the like (not shown) descends (x1 direction in the figure), the cam driver portion 300 attached to the upper mold or the like also descends. Further, a tool (not shown) such as a pierced earring is attached to the tool attachment portion 200a of the cam slider portion 200. The tool is not limited to pierced earrings.

カムドライバー部300はさらに降下し(図4(b))、下死点に到達する(図4(c))。この下死点付近でピアスによりワークへの穴開け加工が行われる(いずれも不図示)。 The cam driver unit 300 further descends (FIG. 4 (b)) and reaches the bottom dead center (FIG. 4 (c)). Drilling is performed in the work by piercing near this bottom dead center (both not shown).

図4(d)に示すように、上型等が上昇する(図のx2方向)と、上型等に取りつけられたカムドライバー部300も上昇する。 As shown in FIG. 4D, when the upper mold or the like rises (in the x2 direction in the figure), the cam driver portion 300 attached to the upper mold or the like also rises.

通常であれば、穴あけ加工後のピアスはカムホルダ部100内の弾性部材(不図示)の付勢力により、ワークから引き抜かれ、カムスライダー部200も初期位置へ上昇を始める。しかしながら、ピアスがパネルに引っかかった場合には、この付勢力では足りないことがある。このため、カムスライダー部200を、機械的係合により、強制的に加工位置(図4(c)の位置)から初期位置(図4(a)の位置)へ離脱させる。 Normally, the pierced earring after the drilling process is pulled out from the work by the urging force of the elastic member (not shown) in the cam holder portion 100, and the cam slider portion 200 also starts to rise to the initial position. However, if the piercing gets caught in the panel, this urging force may not be enough. Therefore, the cam slider portion 200 is forcibly separated from the machining position (position in FIG. 4C) to the initial position (position in FIG. 4A) by mechanical engagement.

図4(d)に示すように、カムスライダー部200が上昇を始めない場合には、カムドライバー部300に取り付けられた第1プレート401の当接部401aと、第2プレート402の当接部402cとが当接する。 As shown in FIG. 4D, when the cam slider portion 200 does not start to rise, the contact portion 401a of the first plate 401 attached to the cam driver portion 300 and the contact portion of the second plate 402 It comes into contact with 402c.

これにより、当接部402cには、第1プレート401の上昇に伴う当接部401aからの力が作用し、揺動用長穴402b及びヒンジピン201を介してカムスライダー部200に離脱力を伝達する(図中のA方向)。この離脱力により、パネルに引っかかったピアスを抜くことが可能となる。 As a result, a force from the abutting portion 401a as the first plate 401 rises acts on the abutting portion 402c, and the disengagement force is transmitted to the cam slider portion 200 via the swinging slot 402b and the hinge pin 201. (A direction in the figure). This detaching force makes it possible to pull out the pierced earrings caught on the panel.

カム角度が70°を超えたあたりからカムスライダー部200の水平動作量(図2の辺A)が小さくなる。このため、強制戻しの掛かり量がわずかとなり、強制戻しが成立しなくなる。実施形態の強制戻し部400によれば、上記構成を有することから掛かり量を増大することができる。なお、掛かり量の詳細について後述する。 The horizontal movement amount (side A in FIG. 2) of the cam slider portion 200 becomes smaller when the cam angle exceeds 70 °. Therefore, the amount of forced return is small, and forced return cannot be established. According to the forced return unit 400 of the embodiment, the amount of hooking can be increased because it has the above configuration. The details of the amount of multiplication will be described later.

図5は、実施形態の下置きカム装置を示す。図に示すように、下置きカム装置1は、強制戻し機構500を有する。 FIG. 5 shows the lower cam device of the embodiment. As shown in the figure, the lower cam device 1 has a forced return mechanism 500.

図6は、図5(b)のA−A断面図である。強制戻し機構500は、第1部材501と第2部材502とを有する。第1部材501は、カムドライバー部300に上部が固定され、下部に第2部材502との当接部となる当接部501a(請求の範囲では第1当接部)を有する。 FIG. 6 is a cross-sectional view taken along the line AA of FIG. 5 (b). The forced return mechanism 500 has a first member 501 and a second member 502. The first member 501 has an upper portion fixed to the cam driver portion 300 and a contact portion 501a (first contact portion in the claims) which is a contact portion with the second member 502 at the lower portion.

第2部材502は、一端に当接部501aとの当接部となる第1当接部502a(請求の範囲では第2当接部)と、中間部に軸部502bと、他端にカムホルダ部100のブロック102(部材)との当接部となる第2当接部502c(請求の範囲では第3当接部)と、を有する。 The second member 502 has a first contact portion 502a (second contact portion in the claims) which is a contact portion with the contact portion 501a at one end, a shaft portion 502b at the intermediate portion, and a cam holder at the other end. It has a second contact portion 502c (third contact portion in the claims) which is a contact portion of the portion 100 with the block 102 (member).

カムスライダー部200は、カムドライバー部300に対するカムスライダー部200の動作方向(図2の辺Aの方向)と同一方向にあけられた貫通穴202を有する。貫通穴202の第1部材501側の開口を開口Aとし、カムホルダ部100側の開口を開口Bとする。第2部材502は、貫通穴202に(図2の辺Aの方向に)、突出位置と収納位置との間で往復可能に収容され、取り付けられる。第2部材502の全長は、貫通穴202の長さより長い。 The cam slider unit 200 has a through hole 202 formed in the same direction as the operation direction of the cam slider unit 200 (the direction of the side A in FIG. 2) with respect to the cam driver unit 300. The opening on the first member 501 side of the through hole 202 is referred to as an opening A, and the opening on the cam holder portion 100 side is referred to as an opening B. The second member 502 is housed and attached to the through hole 202 (in the direction of the side A in FIG. 2) so as to be reciprocating between the protruding position and the storage position. The total length of the second member 502 is longer than the length of the through hole 202.

第1当接部502aは、第1部材501の当接部501aと係合し、第1当接部502aには、第1部材501の上昇に伴う当接部501aからの力が作用する。これにより、貫通穴202を介してカムスライダー部200に上昇力を与える。第2部材502は、貫通穴202の軸方向に往復動作する。 The first contact portion 502a engages with the contact portion 501a of the first member 501, and a force from the contact portion 501a that accompanies the ascent of the first member 501 acts on the first contact portion 502a. As a result, an ascending force is applied to the cam slider portion 200 through the through hole 202. The second member 502 reciprocates in the axial direction of the through hole 202.

図7は、カムスライダー部200の動作に伴う強制戻し部500の動作を示す。図7に示すように、強制戻し部はカムスライダ―部の動作に伴って動作する。カムドライバー部300は降下し、下死点付近に到達する(図7(a))。この下死点付近でピアスによりワークへの穴開け加工が行われる(いずれも不図示)。 FIG. 7 shows the operation of the forced return unit 500 accompanying the operation of the cam slider unit 200. As shown in FIG. 7, the forced return unit operates in association with the operation of the cam slider unit. The cam driver unit 300 descends and reaches near the bottom dead center (FIG. 7 (a)). Drilling is performed in the work by piercing near this bottom dead center (both not shown).

図7(b)に示すように、上型等が上昇すると、上型に取りつけられたカムドライバー部300も上降する。 As shown in FIG. 7B, when the upper mold or the like rises, the cam driver portion 300 attached to the upper mold also moves up.

通常であれば、穴あけ加工後のピアスはカムホルダ部100内の弾性部材(不図示)の付勢力により、ワークから引き抜かれ、カムスライダー部200も初期位置へ上昇を始める。しかしながら、ピアスがパネルに引っかかった場合には、付勢力では足りないことがある。このため、カムスライダー部200を機械的係合により、強制的に加工位置(図7(a)の位置)から初期位置(図7(e)の位置)へ離脱させる。 Normally, the pierced earring after the drilling process is pulled out from the work by the urging force of the elastic member (not shown) in the cam holder portion 100, and the cam slider portion 200 also starts to rise to the initial position. However, if the piercing gets caught in the panel, the urging force may not be enough. Therefore, the cam slider portion 200 is forcibly separated from the machining position (position in FIG. 7A) to the initial position (position in FIG. 7E) by mechanical engagement.

図7(b)に示すように、下死点付近の位置では、第2部材502は、第2当接部502cがブロック102と当接することにより、貫通穴202の開口Bから第2部材502の第2当接部502cが突出することが阻止されている。一方、貫通穴202の開口Aからは第2部材502の第1当接部502aが突出位置(開口Aから突出した位置)に突出する。 As shown in FIG. 7B, at a position near the bottom dead center, the second member 502 has the second member 502 from the opening B of the through hole 202 when the second contact portion 502c comes into contact with the block 102. The second contact portion 502c of the above is prevented from protruding. On the other hand, from the opening A of the through hole 202, the first contact portion 502a of the second member 502 protrudes to a protruding position (a position protruding from the opening A).

図7(b)に示すように、カムスライダー部200が上昇を始めない場合には、カムドライバー部300に取り付けられた第1部材501の当接部501aと、第2部材502の第1当接部502aとが当接する。 As shown in FIG. 7B, when the cam slider portion 200 does not start to rise, the contact portion 501a of the first member 501 attached to the cam driver portion 300 and the first contact portion 501 of the second member 502. The contact portion 502a comes into contact with the contact portion 502a.

これにより、第1当接部502cには、第1部材501の上昇に伴う当接部501aからの力が作用し、第2部材502及び貫通穴202を介してカムスライダー部200に離脱力を伝達する(図中のA方向)。この離脱力により、パネルに引っかかったピアスを抜くことが可能となる。 As a result, a force from the contact portion 501a as the first member 501 rises acts on the first contact portion 502c, and a detaching force is applied to the cam slider portion 200 via the second member 502 and the through hole 202. Communicate (direction A in the figure). This detaching force makes it possible to pull out the pierced earrings caught on the panel.

図7(d)に示すように、パネルに引っかかったピアスが抜かれ、カムスライダー部200が初期位置へ向けて上昇を始めると、第2部材502は、第2当接部502cとブロック102との当接がなくなり、貫通穴202の開口Bから第2部材502の第2当接部502cが突出し始める。一方、当接部501aと第1当接部502aとが当接することにより、貫通穴202の開口Aから第2部材502の第1当接部502aが貫通穴202内に収納され始め、最終的には、ほぼ収納位置(開口Aから突出しない位置)に収容される(図7(e))。 As shown in FIG. 7D, when the pierced earring caught on the panel is pulled out and the cam slider portion 200 starts to rise toward the initial position, the second member 502 comes into contact with the second contact portion 502c and the block 102. The contact disappears, and the second contact portion 502c of the second member 502 begins to protrude from the opening B of the through hole 202. On the other hand, when the contact portion 501a and the first contact portion 502a come into contact with each other, the first contact portion 502a of the second member 502 begins to be housed in the through hole 202 from the opening A of the through hole 202, and finally. Is accommodated in a substantially storage position (a position that does not protrude from the opening A) (FIG. 7 (e)).

カム角度が70°を超えたあたりからカムスライダー部200の水平動作量(図2の辺A)が小さくなる。このため、強制戻しの掛かり量がわずかとなり、強制戻しが成立しなくなる。実施形態の強制戻し部500によれば、上記構成を有することから掛かり量を増大することができる。 The horizontal movement amount (side A in FIG. 2) of the cam slider portion 200 becomes smaller when the cam angle exceeds 70 °. Therefore, the amount of forced return is small, and forced return cannot be established. According to the forced return unit 500 of the embodiment, the amount of hooking can be increased because it has the above configuration.

表1は、掛かり量の増大量を説明する図である。なお、本発明は表1の数値に限定されるものではない。図1の強制戻し機構では、カム角度が75°の場合には、従来の掛かり量が2mmであるところ、6.92mmとなり掛かり量が3.5倍となった。カム角度が80°の場合には、従来の掛かり量が1mmであるところ、7.27mmとなり掛かり量が7.3倍となった。カム角度が85°の場合には、従来はもはや掛かり量が設定できないところ、掛かり量が7.36mmとなった。 Table 1 is a diagram for explaining the amount of increase in the amount of hooking. The present invention is not limited to the values shown in Table 1. In the forced return mechanism of FIG. 1, when the cam angle is 75 °, the amount of engagement is 6.92 mm, which is 3.5 times as much as the conventional amount of engagement of 2 mm. When the cam angle is 80 °, the conventional hooking amount is 1 mm, but it is 7.27 mm, which is 7.3 times the hooking amount. When the cam angle is 85 °, the amount of engagement is 7.36 mm, where the amount of engagement can no longer be set in the past.

図7の強制戻し機構では、カム角度が75°の場合には、従来の掛かり量が2mmであるところ、4.1mmとなり掛かり量が2.1倍となった。カム角度が80°の場合には、従来の掛かり量が1mmであるところ、4.6mmとなり掛かり量が4.6倍となった。カム角度が85°の場合には、従来はもはや掛かり量が設定できないところ、掛かり量が3.6mmとなった。 In the forced return mechanism of FIG. 7, when the cam angle is 75 °, the amount of engagement is 4.1 mm instead of the conventional amount of 2 mm, which is 2.1 times the amount of engagement. When the cam angle is 80 °, the conventional hooking amount is 1 mm, but it is 4.6 mm, which is 4.6 times the hooked amount. When the cam angle is 85 °, the amount of engagement is 3.6 mm, where the amount of engagement can no longer be set in the past.

このように、実施形態の下置きカム装置によれば、十分な掛かり量が設定できることから、高角度のカムにおいても強制戻しを成立させることができる。 As described above, according to the lower cam device of the embodiment, since a sufficient amount of engagement can be set, forced return can be established even with a cam having a high angle.

Figure 0006867722
Figure 0006867722

以上、実施形態を説明したが、この実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。この新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。この実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。 Although the embodiment has been described above, this embodiment is presented as an example and is not intended to limit the scope of the invention. This novel embodiment can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1:カム装置
100:カムホルダ部
200:カムスライダー部
300:カムドライバー部
400:強制戻し部
500:強制戻し部
1: Cam device 100: Cam holder part 200: Cam slider part 300: Cam driver part 400: Forced return part 500: Forced return part

Claims (4)

下型に取り付けられたカムホルダ部と、前記カムホルダ部に第1方向に摺動可能に取り付けられたカムスライダー部と、上型に取り付けられ、前記カムスライダー部を前記第1方向に駆動するためのカムドライバー部と、を有し
前記カムドライバー部に固定され、第1当接部を有する第1部材と、
前記カムスライダー部に、前記カムスライダー部の動作に伴って動作可能に取り付けられ、一端に前記第1当接部と当接するための第2当接部を有する第2部材と、
を有する強制戻し部をさらに有し、
強制戻し時には、前記第1当接部と前記第2当接部が当接し、前記第2部材が前記カムスライダー部に離脱力を伝達し、
前記第2部材は、前記カムホルダ部の所定位置を回転中心として、円弧状に揺動可能に前記カムスライダー部に取り付けられた、下置きカム装置
A cam holder portion attached to the lower mold, a cam slider portion slidably attached to the cam holder portion in the first direction, and a cam slider portion attached to the upper mold to drive the cam slider portion in the first direction. includes a cam driver part, the,
A first member fixed to the cam driver portion and having a first contact portion,
A second member that is operably attached to the cam slider portion in accordance with the operation of the cam slider portion and has a second contact portion for contacting the first contact portion at one end.
Further has a forced return part
At the time of forced return, the first contact portion and the second contact portion come into contact with each other, and the second member transmits a detaching force to the cam slider portion.
The second member is a lower cam device attached to the cam slider portion so as to swing in an arc shape with a predetermined position of the cam holder portion as a rotation center .
下型に取り付けられたカムホルダ部と、前記カムホルダ部に第1方向に摺動可能に取り付けられたカムスライダー部と、上型に取り付けられ、前記カムスライダー部を前記第1方向に駆動するためのカムドライバー部と、を有し、
前記カムドライバー部に固定され、第1当接部を有する第1部材と、
前記カムスライダー部に、前記カムスライダー部の動作に伴って動作可能に取り付けられ、一端に前記第1当接部と当接するための第2当接部を有する第2部材と、
を有する強制戻し部をさらに有し、
強制戻し時には、前記第1当接部と前記第2当接部が当接し、前記第2部材が前記カムスライダー部に離脱力を伝達し、
前記第2部材は、前記第2当接部が突出位置と収納位置との間で、往復可能に前記カムスライダー部に取り付けられた下置きカム装置
A cam holder portion attached to the lower mold, a cam slider portion slidably attached to the cam holder portion in the first direction, and a cam slider portion attached to the upper mold to drive the cam slider portion in the first direction. It has a cam driver part and
A first member fixed to the cam driver portion and having a first contact portion,
A second member that is operably attached to the cam slider portion in accordance with the operation of the cam slider portion and has a second contact portion for contacting the first contact portion at one end.
Further has a forced return part
At the time of forced return, the first contact portion and the second contact portion come into contact with each other, and the second member transmits a detaching force to the cam slider portion.
The second member is a lower cam device in which the second contact portion is reciprocally attached to the cam slider portion between a protruding position and a storage position.
前記第2部材は、他端に前記カムホルダ部の部材と当接するための第3当接部を有し、
強制戻し時には、前記カムホルダ部の部材と前記第3当接部が当接して、前記第2部材の前記第2当接部は前記突出位置に突出する、請求項に記載の下置きカム装置。
The second member has a third contact portion for contacting the member of the cam holder portion at the other end.
The lower cam device according to claim 2 , wherein at the time of forced return, the member of the cam holder portion and the third contact portion come into contact with each other, and the second contact portion of the second member projects to the protruding position. ..
カム角度が60°以上89°以下である、請求項1から3のいずれかに記載の下置きカム装置。The lower cam device according to any one of claims 1 to 3, wherein the cam angle is 60 ° or more and 89 ° or less.
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JP3235486B2 (en) * 1996-10-23 2001-12-04 トヨタ車体株式会社 Press type cam structure
DE19753549C2 (en) * 1997-12-03 2000-02-17 Harald Weigelt Wedge drive
US6978651B2 (en) * 2004-06-01 2005-12-27 Anchor Lamina America, Inc. Roller cam
US7431502B2 (en) * 2004-09-15 2008-10-07 Anchor Lamina America, Inc. Universal cam slide
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