JP2008238544A - Molding die - Google Patents

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JP2008238544A
JP2008238544A JP2007081374A JP2007081374A JP2008238544A JP 2008238544 A JP2008238544 A JP 2008238544A JP 2007081374 A JP2007081374 A JP 2007081374A JP 2007081374 A JP2007081374 A JP 2007081374A JP 2008238544 A JP2008238544 A JP 2008238544A
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mold
guide
slope
molds
guided
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Kazuya Mogi
一哉 茂木
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Inoac Corp
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Inoue MTP KK
Inoac Corp
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Priority to JP2007081374A priority Critical patent/JP2008238544A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a mold retainer and a molding die which improves the durability of a mold. <P>SOLUTION: A recessed part 22b is formed in a guide slope 22a of a mold guide block 22 constituting a top force unit 12, and a low hardness plate 34 is fastened with a bolt 34 to the recessed part 22b. On the other hand, the molds 26 are liftably fitted by a roller 27 guided and transferred along a slope guide groove 25a of a position regulating plate 25 attached to the mold guide block 22 and a parallel guide groove 25b. Further, the molds 26 are transferred upward by the ascent of a bottom force unit 11, and a slope to be guided 26b formed in the molds 26 slides in contact with the guide slope 22a of the mold guide block 22. In this case, only the low hardness plate 33 wears out faster than the slope to be guided 26b. When the wear level of the low hardness plate 33 reaches or exceeds a specified value, the bolt 34 is removed to replace the worn-out low hardness plate 33 with a new one. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、例えば、ゴム製品を射出成形するために用いられる成形型に関する。   The present invention relates to a mold used for, for example, injection molding a rubber product.

従来、射出成形型として、上下一対の金型を上下方向に移動させて型締めを行うものがある。この成形型は前記両金型の型合わせ面が互いに摺動しないので、型合わせ面の磨耗の問題は起きない。   2. Description of the Related Art Conventionally, there is an injection mold that performs clamping by moving a pair of upper and lower molds in the vertical direction. In this mold, the mold mating surfaces of the two molds do not slide with each other, so that the problem of wear of the mold mating surfaces does not occur.

従来の射出成形型として、左右一対の案内斜面をテーパ状に形成した金型保持体と、前記両案内斜面に案内される被案内斜面が形成された左右一対の金型とを備えたものがある。この成形型は、前記両金型を型締め時に前記両案内斜面に沿って案内移動して、楔作用により互いに接近させて型締めするようになっている。（特許文献１参照）
特開２００４−１２２７１５号公報 As a conventional injection mold, a mold holding body in which a pair of left and right guide slopes are formed in a tapered shape, and a pair of left and right molds in which guided slopes guided by the both guide slopes are formed. is there. In this mold, both the molds are guided and moved along the both guide slopes when the molds are clamped, and the molds are brought close to each other by a wedge action and clamped. (See Patent Document 1)
JP 2004-122715 A

ところが、上記従来の成形型は、前記両金型の型締め時に、両案内斜面に被案内斜面が摺動されて強固に押し付けられるので、案内斜面及び被案内斜面が磨耗し易く、金型保持体及び金型の耐久性が低下するという問題があった。   However, in the conventional mold described above, since the guided slopes are slid and pressed firmly on both guide slopes when the two molds are clamped, the guide slope and guided slope are easily worn and the mold is held. There was a problem that durability of a body and a metal mold fell.

本発明は、上記従来の問題点を解消して、金型保持体及び金型の耐久性を向上することができる成形型を提供することにある。   An object of the present invention is to provide a mold capable of solving the above-described conventional problems and improving the durability of the mold holder and the mold.

上記問題点を解決するために、請求項１に記載の発明は、左右一対の案内面のうち少なくとも一方の案内面を案内斜面とした金型保持体と、左右一対の被案内面のうち少なくとも一方の被案内面を被案内斜面とした左右一対の金型とを備え、前記両金型の型締め時に前記案内斜面に前記被案内斜面を摺動案内させて前記両金型に型締め力を付与するようにした成形型において、前記案内斜面及び被案内斜面の少なくともいずれか一方に対し、前記金型保持体又は金型と別体で形成され、かつ前記金型保持体及び金型の材料よりも硬度の低い材料よりなる低硬度部材を取り外し可能に取り付けたことを要旨とする。   In order to solve the above-mentioned problem, the invention according to claim 1 is a mold holding body in which at least one guide surface of a pair of left and right guide surfaces is a guide slope, and at least of a pair of left and right guided surfaces. A pair of left and right molds having one guided surface as a guided slope, and when the two molds are clamped, the guided slope is slidably guided on the guided slope, and the mold clamping force is applied to both molds. In the molding die provided with the above, the mold holding body or the mold is formed separately from at least one of the guide slope and the guided slope, and the mold holding body and the mold are provided. The gist is that a low-hardness member made of a material having a lower hardness than the material is detachably attached.

請求項２に記載の発明は、左右一対の案内面のうち少なくとも一方の案内面を案内斜面とした金型保持体と、左右一対の被案内面のうち少なくとも一方の被案内面を被案内斜面とした左右一対の金型とを備え、前記両金型の型締め時に前記案内斜面に前記被案内斜面を摺動案内させて前記両金型に型締め力を付与するようにした成形型において、前記案内斜面及び被案内斜面に対し、前記金型保持体及び金型と別体で形成され、かつ前記金型保持体及び金型の材料の硬度と同じ硬度の材料よりなる同硬度部材をそれぞれ取り外し可能に取り付けたことを要旨とする。   According to the second aspect of the present invention, there is provided a mold holder having at least one guide surface of a pair of left and right guide surfaces as a guide slope, and at least one guided surface of the pair of left and right guide surfaces as a guide slope. And a pair of left and right molds, and when the both molds are clamped, the guided slopes are slidably guided on the guide slopes to apply a clamping force to both the molds. A member having the same hardness made of a material having the same hardness as the material of the mold holder and the mold and formed separately from the mold holder and the mold with respect to the guide slope and the guided slope. The gist is that each is removably attached.

請求項３に記載の発明は、左右一対の案内面のうち少なくとも一方の案内面を案内斜面とした金型保持体と、左右一対の被案内面のうち少なくとも一方の被案内面を被案内斜面とした左右一対の金型とを備え、前記両金型の型締め時に前記案内斜面に前記被案内斜面を摺動案内させて前記両金型に型締め力を付与するようにした成形型において、前記案内斜面及び被案内斜面に対し、前記金型保持体及び金型と別体で形成され、かつ前記金型保持体及び金型の材料の硬度よりも高い硬度の材料よりなる高硬度部材をそれぞれ取り外し可能に取り付けたことを要旨とする。   According to a third aspect of the present invention, there is provided a mold holder having at least one guide surface of a pair of left and right guide surfaces as a guide slope, and at least one guided surface of the pair of left and right guide surfaces as a guide slope. And a pair of left and right molds, and when the both molds are clamped, the guided slopes are slidably guided on the guide slopes to apply a clamping force to both the molds. A high-hardness member formed of a material having a hardness higher than the hardness of the material of the mold holder and the mold and formed separately from the mold holder and the mold with respect to the guide slope and the guided slope. The gist is that each is attached detachably.

請求項４に記載の発明は、請求項１〜３のいずれか一項において、前記金型保持体には左右一対の案内斜面が形成され、前記両金型には、左右一対の被案内斜面が形成されていることを要旨とする。   According to a fourth aspect of the present invention, in any one of the first to third aspects, a pair of left and right guide slopes is formed on the mold holder, and a pair of left and right guided slopes is formed on both molds. The gist is that is formed.

請求項５に記載の発明は、請求項１〜４のいずれか一項において、前記案内斜面及び被案内斜面の少なくともいずれか一方に対し前記低硬度部材、同硬度部材又は高硬度部材を埋め込むための凹部が形成され、各部材はボルトにより凹部の底面に固定されていることを要旨とする。   According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the low hardness member, the same hardness member or the high hardness member is embedded in at least one of the guide slope and the guided slope. The gist is that each of the members is fixed to the bottom surface of the recess by a bolt.

請求項６に記載の発明は、請求項４又は５において、前記金型保持体には、前記両金型を型開き位置と、型締め位置との間で案内移動するための前後一対の案内溝が設けられ、両案内溝は、前記両金型が型締め方向に行くほど間隔が小さくなるようにテーパ状に形成された左右一対の傾斜案内溝と、両傾斜案内溝の型締め方向の両端部に接続され、かつ互いに平行に形成された左右一対の平行案内溝とにより構成されていることを要旨とする。   According to a sixth aspect of the present invention, in the fourth or fifth aspect, the pair of guides for guiding and moving the two molds between a mold opening position and a mold clamping position are provided on the mold holding body. A groove is provided, and both guide grooves have a pair of left and right inclined guide grooves formed in a tapered shape so that the distance between the molds decreases in the mold clamping direction, and the mold clamping direction of both inclined guide grooves The gist is that it is composed of a pair of left and right parallel guide grooves that are connected to both ends and are formed in parallel to each other.

請求項７に記載の発明は、請求項１、４、５又は６において、前記金型保持体及び金型はロックウェル硬度が３０〜３６ＨＲＣの鋼材により形成され、前記低硬度部材はロックウェル硬度が１０〜１６ＨＲＣの鋼材により形成されていることを要旨とする。   A seventh aspect of the present invention is the first, fourth, fifth or sixth aspect, wherein the mold holder and the mold are formed of a steel material having a Rockwell hardness of 30 to 36 HRC, and the low hardness member is a Rockwell hardness. Is formed of a steel material of 10 to 16 HRC.

（作用）
請求項１記載の発明は、両金型の型締め動作が繰り返し行われると、金型保持体の案内斜面に金型の被案内斜面が繰り返し摺動される。この摺動により前記低硬度部材が金型保持体又は金型よりも先に磨耗する。この低硬度部材の磨耗量が所定量になると、低硬度部材を新しいものと交換する。このため、金型保持体及び金型自体の磨耗が抑制される。 (Function)
According to the first aspect of the present invention, when the mold clamping operations of both molds are repeated, the guided inclined surface of the mold is repeatedly slid on the guide inclined surface of the mold holder. By this sliding, the low-hardness member is worn before the mold holder or the mold. When the wear amount of the low hardness member reaches a predetermined amount, the low hardness member is replaced with a new one. For this reason, wear of the mold holder and the mold itself is suppressed.

請求項２又は３記載の発明は、両金型の型締め動作が繰り返し行われると、金型保持体の案内斜面に金型の被案内斜面が繰り返し摺動される。この摺動により前記両同硬度部材又は両高硬度部材が磨耗する。この両同硬度部材又は両高硬度部材の磨耗量が所定量になると、両同硬度部材又は両高硬度部材を新しいものと交換する。このため、金型保持体及び金型自体の磨耗が抑制される。   In the invention according to claim 2 or 3, when the mold clamping operation of both molds is repeated, the guided slope of the mold is repeatedly slid on the guide slope of the mold holding body. By this sliding, both the same hardness members or both high hardness members are worn. When the wear amount of both the same hardness members or both high hardness members reaches a predetermined amount, both the same hardness members or both high hardness members are replaced with new ones. For this reason, wear of the mold holder and the mold itself is suppressed.

本発明によれば、金型保持体及び金型自体の磨耗が抑制されるので、金型保持体及び金型の耐久性を向上することができる。   According to the present invention, since the wear of the mold holder and the mold itself is suppressed, the durability of the mold holder and the mold can be improved.

以下、本発明を具体化した成形型の一実施形態を図面にしたがって説明する。
図１に示すように、この成形型は、下型ユニット１１と、上型ユニット１２とによって構成されている。前記下型ユニット１１は、図示しない油圧シリンダ等の昇降機構によって、上下方向に昇降動作される昇降支持台１３と、この昇降支持台１３の上面に固定された取付台座１４と、該取付台座１４の上面に嵌入固定され、かつボルト１６によって締め付け固定された中子１５とによって構成されている。 Hereinafter, an embodiment of a mold embodying the present invention will be described with reference to the drawings.
As shown in FIG. 1, this mold is composed of a lower mold unit 11 and an upper mold unit 12. The lower mold unit 11 includes a lifting support 13 that is moved up and down by a lifting mechanism such as a hydraulic cylinder (not shown), a mounting base 14 fixed to the upper surface of the lifting support 13, and the mounting base 14. And a core 15 that is fixedly fastened by bolts 16.

次に、前記上型ユニット１２について説明する。所定位置に取り付け固定された固定支持台２１の下面には、左右一対の金型案内ブロック２２が図示しないボルトによって取り付けられている。前記金型案内ブロック２２の下部には、左右一対の案内ピン２３が下向きに指向するようにボルト２４によって取り付けられている。前記案内ピン２３によって、前記下型ユニット１１の昇降支持台１３が上方に移動されたとき、案内孔１３ａが前記案内ピン２３に嵌入され、下型ユニット１１が案内移動されるようになっている。   Next, the upper mold unit 12 will be described. A pair of left and right mold guide blocks 22 are attached to the lower surface of the fixed support base 21 attached and fixed at a predetermined position by bolts (not shown). A pair of left and right guide pins 23 are attached to the lower part of the mold guide block 22 with bolts 24 so as to be directed downward. When the elevating support 13 of the lower mold unit 11 is moved upward by the guide pin 23, the guide hole 13a is fitted into the guide pin 23, and the lower mold unit 11 is guided and moved. .

前記両金型案内ブロック２２の前後（図１の紙面直交方向）両側面には、位置規制板２５（紙面裏側のみ図示する）がそれぞれ図示しないボルトによって接合固定され、前記両位置規制板２５には、左右及び前後各一対の案内溝が形成されている。左右一対の前記案内溝は、前後方向から見て型締め方向（上方）に行くほど間隔が狭くなるテーパ状の傾斜案内溝２５ａと、該傾斜案内溝２５ａの上端部に接続され、かつ上下方向に互いに平行に形成された左右一対の平行案内溝２５ｂとにより形成されている。   Position restricting plates 25 (only the back side of the drawing is shown) are joined and fixed to both the front and rear sides (in the direction orthogonal to the drawing in FIG. 1) of the both mold guide blocks 22 by bolts (not shown). Are formed with a pair of left and right and front and rear guide grooves. The pair of left and right guide grooves are connected to a tapered inclined guide groove 25a whose interval becomes narrower as it goes in the mold clamping direction (upward) when viewed from the front-rear direction, and to the upper end of the inclined guide groove 25a. Are formed by a pair of left and right parallel guide grooves 25b formed in parallel to each other.

前記両位置規制板２５の案内溝２５ａ，２５ｂに装着される左右一対の金型２６は、その前後両側面に前記案内溝２５ａ，２５ｂに案内移動されるローラ２７がピン２８によって連結されている。前記両金型２６の対向面には半蛇腹状の成形面２６ａがそれぞれ形成されている。前記両金型２６の上部には、成形部材２９がボルト３０によって取り付けられている。前記金型２６と成形部材２９を一体にしてもよい。前記固定支持台２１の中央下面には前記中子１５と接合される中子３１が取り付けられている。   The pair of left and right dies 26 mounted in the guide grooves 25a and 25b of the position restricting plates 25 are connected to the front and rear side surfaces of the pair of rollers 27 by pins 28 with rollers 27 guided and moved to the guide grooves 25a and 25b. . A semi-accordion-shaped molding surface 26 a is formed on the opposing surfaces of the molds 26. A molding member 29 is attached to the upper parts of the molds 26 by bolts 30. The mold 26 and the molding member 29 may be integrated. A core 31 to be joined to the core 15 is attached to the lower center surface of the fixed support base 21.

前記左右一対の金型案内ブロック２２の対向面には、平面状の案内斜面２２ａがそれぞれ形成され、両案内斜面２２ａは下端ほど間隔が大きくなるテーパ状に形成されている。又、両金型２６の背面には前記案内斜面２２ａに案内される平面状の被案内斜面２６ｂがそれぞれ形成され、両被案内斜面２６ｂは下端ほど互いに離隔するテーパ状となっている。前記金型案内ブロック２２の案内斜面２２ａと、金型２６の被案内斜面２６ｂとは、水平線に対する傾斜角が同じに設定されている。前記案内斜面２２ａには、凹部２２ｂが形成され、この凹部２２ｂには、低硬度部材としての低硬度板３３が嵌合され、ボルト３４によって低硬度板３３が金型案内ブロック２２に固定されている。前記金型案内ブロック２２及び金型２６はそれぞれ同じ硬度の鋼材により形成され、前記低硬度板３３は前記鋼材よりも硬度が低い鋼材により形成されている。前記金型２６の鋼材として、例えば大同特殊鋼(株)製のロックウェル硬度が３３ＨＲＣの商品番号「ＰＸ５」や日立金属(株)製のロックウェル硬度が３３ＨＲＣの商品番号「ＨＰＭ２」が用いられている。前記低硬度板３３の鋼材として、ロックウェル硬度が１３ＨＲＣのＪＩＳ規格「Ｓ−５５Ｃ」の鋼材が用いられている。この実施形態では、前記金型２６と低硬度板３３の硬度差を２０ＨＲＣとしている。前記硬度差が１５ＨＲＣより小さい場合には、金型２６と低硬度板３３が摺動したときに、低硬度板３３が選択的に磨耗し難いので好ましくない。又、硬度差が大きくても効果上問題がない。しかし、硬度差が２５ＨＲＣ以上の場合には、低硬度板３３の塑性変形を防止するためそのロックウェル硬度を１０ＨＲＣ以下にできないので、金型２６の材料の選択が難しく、高価な鋼材の選択を強いられることとなりこの点から好ましくない。   On the opposing surfaces of the pair of left and right mold guide blocks 22, planar guide slopes 22 a are formed, and both guide slopes 22 a are formed in a tapered shape with a gap increasing toward the lower end. Further, planar guided inclined surfaces 26b guided by the guide inclined surfaces 22a are formed on the back surfaces of both molds 26, respectively. Both guided inclined surfaces 26b are tapered so that the lower ends thereof are separated from each other. The guide slope 22a of the mold guide block 22 and the guided slope 26b of the mold 26 are set to have the same inclination angle with respect to the horizontal line. A concave portion 22b is formed in the guide slope 22a. A low hardness plate 33 as a low hardness member is fitted into the concave portion 22b, and the low hardness plate 33 is fixed to the mold guide block 22 by a bolt 34. Yes. The mold guide block 22 and the mold 26 are each formed of a steel material having the same hardness, and the low hardness plate 33 is formed of a steel material having a hardness lower than that of the steel material. As the steel material of the mold 26, for example, a product number “PX5” having a Rockwell hardness of 33 HRC manufactured by Daido Special Steel Co., Ltd. or a product number “HPM2” having a Rockwell hardness of 33 HRC manufactured by Hitachi Metals, Ltd. is used. ing. As the steel material of the low hardness plate 33, a steel material of JIS standard “S-55C” having a Rockwell hardness of 13 HRC is used. In this embodiment, the hardness difference between the mold 26 and the low hardness plate 33 is 20 HRC. If the hardness difference is smaller than 15 HRC, it is not preferable because the low hardness plate 33 is not easily worn selectively when the mold 26 and the low hardness plate 33 slide. Even if the hardness difference is large, there is no problem in effect. However, when the hardness difference is 25 HRC or more, since the Rockwell hardness cannot be 10 HRC or less in order to prevent plastic deformation of the low hardness plate 33, it is difficult to select the material of the mold 26, and the expensive steel material should be selected. This is not preferable from this point.

この実施形態では、前記固定支持台２１、金型案内ブロック２２及び位置規制板２５によって金型２６を左右方向及び前後方向から保持する金型保持体が構成されている。
次に、前記のように構成した成形型の動作について説明する。 In this embodiment, the fixed support base 21, the mold guide block 22 and the position restricting plate 25 constitute a mold holder that holds the mold 26 from the left and right directions and from the front and rear directions.
Next, the operation of the mold configured as described above will be described.

図１は、下型ユニット１１が上型ユニット１２から下方に離隔されるとともに、前記金型２６のローラ２７が傾斜案内溝２５ａの下端部に支持され、金型２６が左右方向に離隔された型開き状態を示す。この状態において、図示しない昇降機構により下型ユニット１１が上昇されると、前記取付台座１４の上面が最初に金型２６の下面に当接され、両金型２６が上方に移動される。このとき、両金型２６はローラ２７が傾斜案内溝２５ａに沿って転動されるので、両金型２６が互いに接近しながら上昇され、図２に示すように、ローラ２７が傾斜案内溝２５ａの上端部に移動された状態で両金型２６が型締め位置に移動される。   In FIG. 1, the lower mold unit 11 is spaced downward from the upper mold unit 12, the roller 27 of the mold 26 is supported by the lower end of the inclined guide groove 25 a, and the mold 26 is separated in the left-right direction. The mold open state is shown. In this state, when the lower mold unit 11 is lifted by a lifting mechanism (not shown), the upper surface of the mounting base 14 is first brought into contact with the lower surface of the mold 26 and both molds 26 are moved upward. At this time, since the rollers 27 are rolled along the inclined guide grooves 25a in the two molds 26, the two molds 26 are raised while approaching each other, and as shown in FIG. 2, the rollers 27 are moved into the inclined guide grooves 25a. Both molds 26 are moved to the mold clamping position while being moved to the upper end of the mold.

その後、下型ユニット１１の昇降支持台１３が図２においてさらに上昇されると、前記両金型２６が平行案内溝２５ｂに沿って転動されるローラ２７とともに上方向に案内移動される。そして、前記金型案内ブロック２２の両案内斜面２２ａに対し金型２６の両被案内斜面２６ｂが接触された状態（図３参照）で、前記昇降支持台１３によって金型２６がさらに上方に移動されると、両案内斜面２２ａの楔作用により両金型２６が互いに型締め位置に締め付け固定される。この図３に示す型締め完了状態で、前記中子１５、金型２６の成形面２６ａ、固定支持台２１及び中子３１等によって、ゴム製品を射出成型するためのキャビティＫが形成される。この状態で前記キャビティＫの上部の左右両側と対応するように、前記固定支持台２１及び成形部材２９によって形成されたゴムの注入口（図示略）から図４に示すようにゴムが注入され、製品３５が成形される。   Thereafter, when the lifting support 13 of the lower die unit 11 is further raised in FIG. 2, the two dies 26 are guided and moved upward together with the rollers 27 that roll along the parallel guide grooves 25b. Then, in a state where both guided slopes 26b of the mold 26 are in contact with both guide slopes 22a of the mold guide block 22 (see FIG. 3), the mold 26 is moved further upward by the lifting support base 13. Then, the two molds 26 are clamped and fixed to each other at the mold clamping position by the wedge action of the both guide slopes 22a. In the mold clamping completion state shown in FIG. 3, a cavity K for injection molding of rubber products is formed by the core 15, the molding surface 26a of the mold 26, the fixed support base 21, the core 31 and the like. In this state, rubber is injected as shown in FIG. 4 from a rubber injection port (not shown) formed by the fixed support base 21 and the molding member 29 so as to correspond to the left and right sides of the upper portion of the cavity K. Product 35 is molded.

図４に示すように、製品３５が成形された後、前記下型ユニット１１を図５に示すように下方に移動すると、前記金型２６が型開き状態に移動されるとともに、下型ユニット１１の中子１５に保持された製品３５を手作業により中子１５から取り外す。   As shown in FIG. 4, when the lower mold unit 11 is moved downward as shown in FIG. 5 after the product 35 is molded, the mold 26 is moved to the mold open state and the lower mold unit 11 is moved. The product 35 held by the core 15 is removed from the core 15 by manual work.

上記実施形態の成形型によれば、以下のような効果を得ることができる。
（１）上記実施形態では、前記金型案内ブロック２２の案内斜面２２ａに対し、凹部２２ｂを形成し、この凹部２２ｂの内部に低硬度板３３を嵌入して、ボルト３４により金型案内ブロック２２に低硬度板３３を固定したので、該低硬度板３３の表面に金型２６の被案内斜面２６ｂが摺動状態で押し付けられる。この低硬度板３３に対する金型２６の押圧動作によって、低硬度板３３が金型２６よりも硬度が低いので、低硬度板３３の表面が先に摩耗される。このため、成形型が繰り返し使用されて、前記低硬度板３３の摩耗量が所定値以上になると、ボルト３４を取り外して、摩耗した低硬度板３３を新しい低硬度板３３と交換することができ、前記金型案内ブロック２２全体又は金型２６全体を交換する必要がなくなる。従って、金型案内ブロック２２及び金型２６の耐久性を向上することができる。 According to the mold of the above embodiment, the following effects can be obtained.
(1) In the above embodiment, the recess 22b is formed in the guide slope 22a of the mold guide block 22, and the low hardness plate 33 is inserted into the recess 22b, and the mold guide block 22 is formed by the bolt 34. Since the low hardness plate 33 is fixed to the surface of the low hardness plate 33, the guided slope 26 b of the mold 26 is pressed against the surface of the low hardness plate 33 in a sliding state. Due to the pressing operation of the mold 26 against the low hardness plate 33, the hardness of the low hardness plate 33 is lower than that of the mold 26, so that the surface of the low hardness plate 33 is worn first. For this reason, when the molding die is repeatedly used and the wear amount of the low hardness plate 33 exceeds a predetermined value, the bolt 34 can be removed and the worn low hardness plate 33 can be replaced with a new low hardness plate 33. It is not necessary to replace the entire mold guide block 22 or the entire mold 26. Therefore, the durability of the mold guide block 22 and the mold 26 can be improved.

（２）上記実施形態では、前記位置規制板２５に形成された傾斜案内溝２５ａに案内されるローラ２７によって、両金型２６を型締め動作時に斜め上方に移動して互いに接近するようにした。このため、金型案内ブロック２２の案内斜面２２ａに対する金型２６の被案内斜面２６ｂの摺動距離（時間）が少なくなり、前記低硬度板３３の摩耗量が抑制され、低硬度板３３の交換期間を長くすることができる。   (2) In the above embodiment, the two molds 26 are moved obliquely upward during the clamping operation by the rollers 27 guided by the inclined guide grooves 25a formed in the position restricting plate 25 so as to approach each other. . Therefore, the sliding distance (time) of the guided slope 26b of the mold 26 with respect to the guide slope 22a of the mold guide block 22 is reduced, the amount of wear of the low hardness plate 33 is suppressed, and the replacement of the low hardness plate 33 is performed. The period can be lengthened.

次に、この発明の別の実施形態を図６及び図７に基づいて順次説明する。
図６に示す成形型は、前記金型２６の被案内斜面２６ｂに凹部２６ｃを形成し、この凹部２６ｃに前記低硬度板３３と同様の低硬度板３６を嵌め込み、ボルト３４によって、該低硬度板３６を金型２６に固定している。この成形型においては、型開き状態において、前記金型２６が下方に移動された状態で、前記低硬度板３６の交換作業を容易に行うことができる。 Next, another embodiment of the present invention will be sequentially described with reference to FIGS.
The molding die shown in FIG. 6 has a recess 26c formed in the guided inclined surface 26b of the mold 26, and a low hardness plate 36 similar to the low hardness plate 33 is fitted into the recess 26c. The plate 36 is fixed to the mold 26. In this mold, when the mold 26 is moved downward in the mold open state, the low hardness plate 36 can be easily replaced.

図７に示す成形型は、前記金型案内ブロック２２及び金型２６に、前記低硬度板３３，３６をそれぞれ嵌め込み固定するとともに、前記低硬度板３３及び低硬度板３６のロックウェル硬度を前記金型案内ブロック２２及び金型２６のロックウェル硬度（３３ＨＲＣ）よりも低い同じ硬度（例えば１３ＨＲＣ）に設定している。   In the mold shown in FIG. 7, the low hardness plates 33 and 36 are fitted and fixed to the mold guide block 22 and the mold 26, respectively, and the Rockwell hardness of the low hardness plate 33 and the low hardness plate 36 is set as described above. The same hardness (for example, 13 HRC) lower than the Rockwell hardness (33 HRC) of the mold guide block 22 and the mold 26 is set.

この実施形態においては、両低硬度板３３，３６を交換することにより、金型案内ブロック２２及び金型２６の案内斜面２２ａ及び被案内斜面２６ｂの摩耗を極力軽減することができる。   In this embodiment, by exchanging the low hardness plates 33 and 36, it is possible to reduce the wear of the guide guide 22 and the guide slope 22a of the mold 26 and the guide slope 26b as much as possible.

図示しないが、図７に示す成形型において、前記低硬度板３３，３６に代えて、前記金型案内ブロック２２及び金型２６のロックウェル硬度（例えば３３ＨＲＣ）よりも高いロックウェル硬度（例えば４０ＨＲＣ）の高硬度部材を高硬度板として使用してもよい。この場合には、高硬度板の取り換え頻度が低くなるという利点がある。   Although not shown, in the mold shown in FIG. 7, instead of the low hardness plates 33 and 36, a Rockwell hardness (for example, 40 HRC) higher than the Rockwell hardness (for example, 33HRC) of the mold guide block 22 and the mold 26 is used. ) High hardness member may be used as the high hardness plate. In this case, there is an advantage that the replacement frequency of the high hardness plate is reduced.

図示しないが、図７に示す成形型において、前記低硬度板３３，３６に代えて、前記金型案内ブロック２２及び金型２６のロックウェル硬度（例えば３３ＨＲＣ）よりも高いロックウェル硬度が５０ＨＲＣ以上の焼き入れ焼き戻し鋼（例えば６０ＨＲＣ）の超高硬度部材を高硬度板として使用してもよい。仮に、５０ＨＲＣ以上の鋼材を金型案内ブロック２２及び金型２６全体に使用した場合には、鋼材の硬度が非常に高いので、それらの加工に長時間を要するという問題がある。しかし、この別の実施形態では、超硬度の部材の加工は平板にボルト穴を開けたシンプルな形状の前記超高硬度板のみであるため、その加工に要する時間が長くなることはない。又、焼き入れ焼き戻し鋼はロックウェル硬度が例えば６０ＨＲＣと非常に高いので、摺動抵抗が低くなるために、超高硬度板の取り換え頻度が一層低くなるという利点もある。   Although not shown, in the mold shown in FIG. 7, instead of the low hardness plates 33 and 36, the Rockwell hardness higher than the Rockwell hardness (for example, 33HRC) of the mold guide block 22 and the mold 26 is 50 HRC or more. An ultra-hard member made of tempered and tempered steel (for example, 60HRC) may be used as the high-hardness plate. If a steel material of 50 HRC or more is used for the mold guide block 22 and the mold 26 as a whole, the steel material has a very high hardness, so that there is a problem that it takes a long time to process them. However, in this alternative embodiment, the processing of the ultra-hard member is only the ultra-high hardness plate having a simple shape with a bolt hole formed in a flat plate, so that the time required for the processing does not increase. Further, since the quenching and tempering steel has a very high Rockwell hardness of, for example, 60 HRC, the sliding resistance is lowered, so that there is an advantage that the replacement frequency of the ultra-high hardness plate is further reduced.

前記金型案内ブロック２２及び金型２６の硬度が例えば３３ＨＲＣ、３８ＨＲＣというように異なる場合においては、それぞれの硬度よりも高い硬度が例えば４０ＨＲＣ、５２ＨＲＣのものを二枚の高硬度板としてもよく、例えば５２ＨＲＣの二枚の同じ高硬度板としてもよい。   In the case where the hardnesses of the mold guide block 22 and the mold 26 are different such as 33 HRC and 38 HRC, for example, two high-hardness plates having hardnesses higher than the respective hardnesses of 40 HRC and 52 HRC, for example, may be used. For example, two same high hardness plates of 52 HRC may be used.

図７に示す成形型において、前述した金型案内ブロック２２及び金型２６にそれぞれ装着された両高硬度板の硬度を例えば５２ＨＲＣ、６０ＨＲＣのように相違させてもよい。
図示しないが、図７に示す成形型において、前記低硬度板３３，３６に代えて、前記金型案内ブロック２２及び金型２６のロックウェル硬度（例えば３３ＨＲＣ）と同じロックウェル硬度（例えば３３ＨＲＣ）の同硬度部材を同硬度板として使用してもよい。前記金型案内ブロック２２及び金型２６の硬度が例えば３３ＨＲＣ、３８ＨＲＣというように異なる場合においては、金型案内ブロック２２に用いる同硬度板の硬度をブロック２２と同じ硬度の３３ＨＲＣとし、金型２６に用いる同硬度板の硬度を金型２６と同じ硬度の３８ＨＲＣとしてもよい。 In the mold shown in FIG. 7, the hardnesses of the two high-hardness plates respectively attached to the mold guide block 22 and the mold 26 described above may be made different, for example, 52HRC and 60HRC.
Although not shown, in the mold shown in FIG. 7, instead of the low hardness plates 33 and 36, the same Rockwell hardness (for example, 33HRC) as the Rockwell hardness (for example, 33HRC) of the mold guide block 22 and the mold 26 is used. The same hardness member may be used as the same hardness plate. When the hardness of the mold guide block 22 and the mold 26 is different, for example, 33HRC and 38HRC, the hardness of the same hardness plate used for the mold guide block 22 is set to 33HRC having the same hardness as the block 22, and the mold 26 The hardness of the same hardness plate used in the above may be 38 HRC having the same hardness as the mold 26.

上記実施形態は以下のように変更してもよい。
・前記低硬度板３３の材料として、例えば、ＪＩＳ規格の「Ｓ−４５Ｃ、Ｓ−５０Ｃ」の鋼材を用いてもよい。又、高硬度板の材料として、日本高周波鋼業(株)製の商品番号「ＨＰＭ１」、住友金属工業(株)製の商品番号「ＮＡＫ５５」、「ＮＡＫ８０」を用いてもよい。超高硬度部材として日本高周波鋼業(株)製の商品番号「ＨＰＭ３１」、大同特殊鋼(株)製の「ＰＤ６１３」を用いてもよい。 The above embodiment may be modified as follows.
-As a material of the said low-hardness board 33, you may use the steel material of "S-45C, S-50C" of JIS specification, for example. Further, as a material for the high-hardness plate, product number “HPM1” manufactured by Nippon High Frequency Steel Co., Ltd., product numbers “NAK55” and “NAK80” manufactured by Sumitomo Metal Industries, Ltd. may be used. The product number “HPM31” manufactured by Nippon High Frequency Steel Co., Ltd. and “PD613” manufactured by Daido Steel Co., Ltd. may be used as the ultra-high hardness member.

・図示しないが、前記金型案内ブロック２２の案内斜面２２ａに取り付けた前記低硬度板３３を省略し、前記金型２６の被案内斜面２６ｂに形成した凹部に低硬度板３３を取り付けるようにしてもよい。又、金型案内ブロック２２の凹部と金型２６の凹部とにそれぞれ低硬度板３３を取り付けるようにしてもよい。   Although not shown, the low hardness plate 33 attached to the guide slope 22a of the mold guide block 22 is omitted, and the low hardness plate 33 is attached to the recess formed in the guided slope 26b of the mold 26. Also good. Alternatively, the low hardness plate 33 may be attached to the recess of the mold guide block 22 and the recess of the mold 26, respectively.

・前記金型案内ブロック２２及び金型２６の少なくとも一方に形成した前記低硬度板３３、同硬度板又は高硬度板を取り付けるための凹部２２ｂを省略し、案内斜面２２ａの全域又は被案内斜面２６ｂの全域に低硬度板３３、同硬度板又は高硬度板を複数のボルト３４により取り外し可能に取り付けるようにしてもよい。   -The low hardness plate 33 formed on at least one of the mold guide block 22 and the mold 26, the concave portion 22b for attaching the same hardness plate or the high hardness plate is omitted, and the entire area of the guide slope 22a or the guided slope 26b. The low hardness plate 33, the same hardness plate, or the high hardness plate may be detachably attached to the entire area by a plurality of bolts 34.

・前記両金型案内ブロック２２の両案内斜面２２ａのうちいずれか一方を金型２６の型締め方向と平行な案内面にするとともに、前記両金型２６の被案内斜面２６ｂを金型２６の型締め方向と平行な被案内面にした成形型に具体化してもよい。   One of the guide slopes 22a of the both mold guide blocks 22 is a guide surface parallel to the mold clamping direction of the mold 26, and the guided slope 26b of both the molds 26 is the mold 26 You may embody in the shaping | molding die made into the to-be-guided surface parallel to a mold clamping direction.

この発明を具体化した成形型の一実施形態を示す型開き状態の縦断面図。The longitudinal cross-sectional view of the mold opening state which shows one Embodiment of the shaping | molding die which actualized this invention. 下型ユニットを中間高さまで上昇した状態を示す縦断面図。The longitudinal cross-sectional view which shows the state which raised the lower mold | type unit to intermediate height. 成形型の型締め状態を示す縦断面図。The longitudinal cross-sectional view which shows the clamping state of a shaping | molding die. 成形型のキャビティにゴムを注入して製品を成形した状態を示す縦断面図。The longitudinal cross-sectional view which shows the state which inject | poured rubber into the cavity of a shaping | molding die and shape | molded the product. 成形型の型開き状態を示す縦断面図。The longitudinal cross-sectional view which shows the mold open state of a shaping | molding die. この発明の別の実施形態を示す成形型の型締め状態の縦断面図。The longitudinal cross-sectional view of the clamping state of the shaping | molding die which shows another embodiment of this invention. この発明の別の実施形態を示す成形型の型締め状態の縦断面図。The longitudinal cross-sectional view of the clamping state of the shaping | molding die which shows another embodiment of this invention.

符号の説明Explanation of symbols

３４…ボルト、２２ａ…案内斜面、２２ｂ，２６ｃ…凹部、２５ａ…傾斜案内溝、２５ｂ…平行案内溝、２６…金型、２６ｂ…被案内斜面。   34 ... Bolt, 22a ... Guide slope, 22b, 26c ... Recess, 25a ... Inclined guide groove, 25b ... Parallel guide groove, 26 ... Mold, 26b ... Guided slope.

Claims (7)

左右一対の案内面のうち少なくとも一方の案内面を案内斜面とした金型保持体と、左右一対の被案内面のうち少なくとも一方の被案内面を被案内斜面とした左右一対の金型とを備え、前記両金型の型締め時に前記案内斜面に前記被案内斜面を摺動案内させて前記両金型に型締め力を付与するようにした成形型において、
前記案内斜面及び被案内斜面の少なくともいずれか一方に対し、前記金型保持体又は金型と別体で形成され、かつ前記金型保持体及び金型の材料よりも硬度の低い材料よりなる低硬度部材を取り外し可能に取り付けたことを特徴とする成形型。 A mold holding body having at least one guide surface of a pair of left and right guide surfaces as a guide slope, and a pair of left and right molds having at least one guided surface of the pair of left and right guided surfaces as a guide slope. A mold that slides and guides the guided slope to the guide slope at the time of mold clamping of both molds, and applies a clamping force to the molds;
A low level material made of a material that is formed separately from the mold holder or the mold and has a lower hardness than the material of the mold holder and the mold, with respect to at least one of the guide slope and the guided slope. A mold characterized in that a hardness member is detachably attached. 左右一対の案内面のうち少なくとも一方の案内面を案内斜面とした金型保持体と、左右一対の被案内面のうち少なくとも一方の被案内面を被案内斜面とした左右一対の金型とを備え、前記両金型の型締め時に前記案内斜面に前記被案内斜面を摺動案内させて前記両金型に型締め力を付与するようにした成形型において、
前記案内斜面及び被案内斜面に対し、前記金型保持体及び金型と別体で形成され、かつ前記金型保持体及び金型の材料の硬度と同じ硬度の材料よりなる同硬度部材をそれぞれ取り外し可能に取り付けたことを特徴とする成形型。 A mold holding body having at least one guide surface of a pair of left and right guide surfaces as a guide slope, and a pair of right and left molds having at least one guided surface of the left and right guide surfaces as a guide slope. In a mold that provides a clamping force to both molds by sliding and guiding the guided slope to the guide slope when clamping both molds,
The same hardness member made of a material having the same hardness as the material of the mold holder and the mold, which is formed separately from the mold holder and the mold, with respect to the guide slope and the guided slope, respectively. Mold that is removably attached. 左右一対の案内面のうち少なくとも一方の案内面を案内斜面とした金型保持体と、左右一対の被案内面のうち少なくとも一方の被案内面を被案内斜面とした左右一対の金型とを備え、前記両金型の型締め時に前記案内斜面に前記被案内斜面を摺動案内させて前記両金型に型締め力を付与するようにした成形型において、
前記案内斜面及び被案内斜面に対し、前記金型保持体及び金型と別体で形成され、かつ前記金型保持体及び金型の材料の硬度よりも高い硬度の材料よりなる高硬度部材をそれぞれ取り外し可能に取り付けたことを特徴とする成形型。 A mold holding body having at least one guide surface of a pair of left and right guide surfaces as a guide slope, and a pair of left and right molds having at least one guided surface of the pair of left and right guided surfaces as a guide slope. A mold that slides and guides the guided slope to the guide slope at the time of mold clamping of both molds, and applies a clamping force to the molds;
A high-hardness member made of a material that is formed separately from the mold holding body and the mold with respect to the guide slope and the guided slope and that has a hardness higher than the hardness of the material of the mold holding body and the mold. Molds characterized by being removably attached. 請求項１〜３のいずれか一項において、前記金型保持体には左右一対の案内斜面が形成され、前記両金型には、左右一対の被案内斜面が形成されていることを特徴とする成形型。 The left-right paired guide slope is formed in the said metal mold | die holding body in any one of Claims 1-3, The left-right paired guided slope is formed in both said molds, It is characterized by the above-mentioned. Mold to be used. 請求項１〜４のいずれか一項において、前記案内斜面及び被案内斜面の少なくともいずれか一方に対し前記低硬度部材、同硬度部材又は高硬度部材を埋め込むための凹部が形成され、各部材はボルトにより凹部の底面に固定されていることを特徴とする成形型。 In any one of Claims 1-4, the recessed part for embedding the said low hardness member, the same hardness member, or a high hardness member is formed with respect to at least any one of the said guide slope and a to-be-guided slope, A molding die characterized by being fixed to the bottom surface of the recess by a bolt. 請求項４又は５において、前記金型保持体には、前記両金型を型開き位置と、型締め位置との間で案内移動するための前後一対の案内溝が設けられ、両案内溝は、前記両金型が型締め方向に行くほど間隔が小さくなるようにテーパ状に形成された左右一対の傾斜案内溝と、両傾斜案内溝の型締め方向の両端部に接続され、かつ互いに平行に形成された左右一対の平行案内溝とにより構成されていることを特徴とする成形型。 In Claim 4 or 5, the mold holder is provided with a pair of front and rear guide grooves for guiding and moving the molds between a mold opening position and a mold clamping position. The pair of left and right inclined guide grooves formed in a tapered shape so that the distance between the two molds decreases in the mold clamping direction, and both ends of the inclined guide grooves in the mold clamping direction are connected and parallel to each other. And a pair of left and right parallel guide grooves formed on the mold. 請求項１、４、５又は６において、前記金型保持体及び金型はロックウェル硬度が３０〜３６ＨＲＣの鋼材により形成され、前記低硬度部材はロックウェル硬度が１０〜１６ＨＲＣの鋼材により形成されていることを特徴とする成形型。 7. The mold holder and the mold according to claim 1, wherein the mold holder and the mold are made of a steel material having a Rockwell hardness of 30 to 36 HRC, and the low hardness member is made of a steel material having a Rockwell hardness of 10 to 16 HRC. A mold characterized by
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010194986A (en) * 2009-02-27 2010-09-09 Michinori Takemoto Slide component for slide core and mold
JP2020116917A (en) * 2019-01-28 2020-08-06 Ｔｏｗａ株式会社 Resin molding device, and method for manufacturing resin molding
JP2020116916A (en) * 2019-01-28 2020-08-06 Ｔｏｗａ株式会社 Resin molding device, and method for manufacturing resin molding

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010194986A (en) * 2009-02-27 2010-09-09 Michinori Takemoto Slide component for slide core and mold
JP2020116917A (en) * 2019-01-28 2020-08-06 Ｔｏｗａ株式会社 Resin molding device, and method for manufacturing resin molding
JP2020116916A (en) * 2019-01-28 2020-08-06 Ｔｏｗａ株式会社 Resin molding device, and method for manufacturing resin molding

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