WO2016031297A1 - クッションピン - Google Patents
クッションピン Download PDFInfo
- Publication number
- WO2016031297A1 WO2016031297A1 PCT/JP2015/062052 JP2015062052W WO2016031297A1 WO 2016031297 A1 WO2016031297 A1 WO 2016031297A1 JP 2015062052 W JP2015062052 W JP 2015062052W WO 2016031297 A1 WO2016031297 A1 WO 2016031297A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rod
- cushion pin
- main body
- cushion
- coil spring
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
- B21D24/02—Die-cushions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
Definitions
- the present invention relates to a cushion pin used in a press molding apparatus that performs press molding on a workpiece.
- press processing is performed on the processed part of the workpiece by the upper mold and the lower mold.
- a press molding apparatus is known.
- the blank holder in order to prevent the generation of wrinkles during processing, is supported by a number of cushion pins arranged below the upper side of the blank holder from the cushion pin. It is known to have a structure that applies a supporting force that presses against an object.
- a cushion pin for supporting the blank holder As a cushion pin for supporting the blank holder, a cylindrical main body (punch case), a coil spring (coil spring) disposed inside the main body, and a coil spring disposed so as to protrude from one end of the main body, There is known a cushion spring (supporting structure of a molding punch) composed of a rod (molding punch) that is urged so as to protrude from the main body by (see, for example, Patent Document 1).
- the cushion spring described in Patent Document 1 has only one coil spring (elastic member) disposed inside the main body, it is sufficient for the blank holder when the amount of movement of the blank holder is small. In some cases, it was not possible to apply sufficient support.
- the present invention has been made in view of the above points, and provides a cushion pin capable of applying a sufficient supporting force to a blank holder of a press molding apparatus even if the number and area of cushion pins that can be arranged are limited. For the purpose.
- a cushion pin includes a cylindrical main body portion and a plurality of annular partition walls that are arranged in the axial direction of the main body portion with a predetermined interval inside the main body portion and form a plurality of spring chambers And a coil spring disposed in each of the spring chambers, and a rod that is disposed so as to pass through the opening of the partition wall inside the main body and has at least one end protruding from the main body, the rod sliding on the opening.
- a rod portion having a movable diameter and a plurality of flange portions are provided, and the flange portions are located inside the spring chambers and are biased by a coil spring.
- the coil spring is disposed in each of the plurality of spring chambers formed inside the main body, and one of the coil springs is urged to be supported by the partition wall. Yes. Therefore, the cushion pin of the present invention can apply the same support force to the rod as in the case where the coil springs are arranged in parallel, although the coil springs are arranged in series.
- the rod is less likely to buckle.
- the cushion pin of the present invention it is possible to apply a sufficient supporting force to the blank holder of the press molding apparatus even when the number and area where the cushion pins can be arranged are limited.
- the main body is configured by connecting a plurality of cylindrical members, and the plurality of cylindrical members are arranged such that the central axes are aligned in a line on a common axis. It is preferable.
- This configuration makes it easy to insert a rod or coil spring inside the main body, thus facilitating assembly of the cushion pin.
- the main body and the partition are separate.
- the partition wall and the main body may be formed integrally. However, when they are separated, it is easy to insert a rod or a coil spring inside the main body, so that the cushion pin can be easily assembled.
- the rod portion is constituted by arranging a plurality of rod members in the axial direction of the main body portion.
- the main body is also composed of a plurality of cylindrical members
- the number of coil springs and partition walls that is, the number of spring chambers
- the number of rod members that is, the length of the rods
- the number of cylindrical members that is, the number of cylindrical members
- each of the rod members has a flange portion and a rod-shaped portion extending toward the opposite side of the coil spring that biases the flange portion. It is preferable.
- the adjacent rod members come into contact with each other at the flange portion and the tip of the rod-shaped portion, so that the axis of the rod portion is not easily displaced from the axis of the main body portion.
- the sliding of the rod is less likely to be hindered.
- a guide bush is provided at the opening of the partition wall.
- the main body portion is provided with an outer cylinder member disposed inside.
- the cushion pin has a double structure of the main body portion and the outer cylinder member, the strength can be easily increased.
- Sectional drawing which shows schematic structure of the press molding apparatus using the cushion pin which concerns on 1st Embodiment of this invention.
- Sectional drawing which shows schematic structure of the cushion pin of FIG.
- Sectional drawing which shows schematic structure of the cushion pin which concerns on 2nd Embodiment of this invention.
- a press molding apparatus 10 includes a bolster 12 fixed on a die bed 11, a lower mold 13 fixed on the bolster 12, and an upper mold provided above the lower mold 13 so as to be movable up and down. 14.
- the lower mold 13 has a lower surface molding portion 13a protruding upward.
- the upper mold 14 has an upper surface molding portion 14a having a concave cross section corresponding to the lower surface molding portion 13a.
- the upper die 14 is lowered by an elevating means (not shown) and presses the plate-like workpiece W.
- an up and down blank holder 15 formed in an annular shape is provided around the lower surface molding portion 13 a of the lower mold 13.
- the blank holder 15 is provided so as to face the work pressing surface 14b formed on the outer periphery of the upper surface molding portion 14a of the upper mold 14.
- the workpiece W is placed on the blank holder 15, and the non-processed portion of the workpiece W is held between the workpiece pressing surface 14 b and the blank holder 15 when the upper mold 14 is lowered.
- the workpiece W is press-molded by the lower surface molding portion 13a and the upper surface molding portion 14a while being sandwiched between the workpiece pressing surface 14b and the blank holder 15.
- the lower mold 13 and the upper mold 14 can be exchanged according to the molded shape of the workpiece W.
- the lower surface molding portion 13a and the upper surface molding portion 14a have different shapes from before the replacement, so that the blank holder 15 is also matched to the lower mold 13 and the upper mold 14 after replacement. Replaced with the corresponding shape.
- the cushion plate 16 is provided in a horizontal posture below the die bed 11.
- the cushion plate 16 is supported by a cushion cylinder 17 provided below the cushion plate 16.
- the cushion cylinder 17 that supports the cushion plate 16 has a piston rod 17 a that expands and contracts along the axial direction of the cushion cylinder 17.
- the cushion plate 16 is connected to the upper end of the piston rod 17a and moves up and down according to the lifting and lowering of the piston rod 17a.
- the blank holder 15 is supported by a plurality of cushion pins 1A on the cushion plate 16.
- the cushion pin 1 ⁇ / b> A can be changed in support position and number according to the shape of the blank holder 15.
- the cushion cylinder 17 generates an upward biasing force, and the biasing force is transmitted to the cushion plate 16, the cushion pin 1A, and the blank holder 15.
- support force from the cushion pin 1 ⁇ / b> A is applied to the blank holder 15.
- the support force at this time is set according to the shape of the workpiece W, the type of material, and the like.
- the cushion pin 1 ⁇ / b> A has a plurality of cylindrical members 2 arranged so that their central axes are arranged in a line on a common straight line, and the central axis of the cylindrical member 2 coincides with the central axis. And it has the some annular member 3 arrange
- the circular member 3 has a circular opening 3a at the center.
- a guide bush 3b is fitted into the opening 3a.
- the main body portion of the cushion pin 1 ⁇ / b> A includes a cylindrical member 2 and a portion sandwiched between the cylindrical members 2 of the annular member 3.
- the partition wall of the cushion pin 1 ⁇ / b> A is configured by a portion protruding to the inner surface side of the tubular member 2 of the annular member 3. Therefore, the main body has a structure in which partition walls are provided in the main body so as to be arranged in the axial direction of the main body with a predetermined interval.
- the lower end of the main body is sealed with a cap screw C.
- a plurality of spring chambers are formed inside the main body by a partition wall, a cap screw C, and a piston member 7 described later.
- a rod member 4 and a coil spring 5 are arranged in each spring chamber.
- the rod member 4 has a disk-shaped flange portion 4a having a diameter larger than the diameter of the opening portion 3a of the annular member 3, and a diameter that allows the opening portion 3a to slide, and from the flange portion 4a to the blank holder 15
- a rod-like rod-like portion 4b extending to the side (the tip side of the piston member 7 in FIG. 1; hereinafter referred to as “upper side”) is provided.
- the rod of the cushion pin 1A is configured by arranging a plurality of rod members 4 in the axial direction of the main body. Therefore, the rod has one rod portion constituted by a plurality of rod-like portions 4b and a plurality of flange portions 4a.
- the rod thus configured is arranged so as to pass through the opening 3a of the partition wall inside the main body, and the upper end protrudes from the upper opening of the cylindrical main body.
- the upper end of the coil spring 5 is connected to the flange 4a of the rod member 4 disposed in the spring chamber together with the coil spring 5 on the side opposite to the blank holder 15 side (the cap screw C side in FIG. Abutting from the lower side)).
- the lower end of the coil spring 5 comes into contact with the lower partition wall or the cap screw C among the partition walls constituting the spring chamber in which the coil spring 5 is disposed.
- the main body portion constituted by the tubular member 2 and the portion of the annular member 3 sandwiched between the tubular members 2 is disposed inside the outer tubular member 6.
- the cushion pin 1 ⁇ / b> A of the present embodiment is provided with the outer cylinder member 6 so that the cylindrical portion has a double structure. Therefore, since the strength is higher than that of the cushion pin having the configuration not including the outer cylinder member 6, buckling hardly occurs when the supporting force is applied from the cushion pin 1 ⁇ / b> A to the blank holder 15.
- the outer cylinder member 6 is formed longer in the axial direction than the main body.
- a piston member 7 is disposed on the upper side of the main body so as to be slidable in the axial direction of the main body inside the upper end of the outer cylinder member 6.
- the piston member 7 is a member that contacts the blank holder 15 when the cushion pin 1A is installed in the press molding apparatus. A support force is applied to the blank holder 15 via the piston member 7.
- the piston member 7 has a disk-shaped large-diameter portion 7a and a small-diameter portion 7b extending upward from the center of the large-diameter portion 7a.
- the upper end of the rod specifically, the uppermost rod member 4 of the rod members 4 constituting the rod
- the uppermost end of the coil spring 5 is in contact.
- the blank holder 15 contacts the upper end surface of the small diameter portion 7b.
- An annular cap member 8 is fitted into the upper end portion of the outer cylinder member 6 in order to restrict the sliding of the piston member 7.
- the small diameter portion 7b of the piston member 7 is slidably fitted into the opening of the cap member 8.
- the upper peripheral edge of the large-diameter portion 7 a of the piston member 7 is in contact with the lower end portion of the cap member 8.
- a predetermined interval is formed between the lower end surface of the cap member 8 and the upper end surface of the main body (specifically, among the cylindrical members 2 constituting the main body, the cylindrical member 2 closest to the blank holder 15).
- the sliding range of the piston member 7 is regulated by the large diameter portion 7a coming into contact with the end surfaces thereof.
- the piston member 7 when the press molding is performed (that is, when the piston member 7 is pushed in from above), the piston member 7 is below the large-diameter portion 7a of the piston member 7 at the maximum. The lower end moves to a position where it comes into contact with the upper end of the main body.
- the position where the rod is urged by the coil spring 5 is dispersed in a plurality of positions, and becomes an area close to the center rather than the end of the rod, so that the rod is less likely to buckle.
- the cushion pin 1A of the present embodiment a sufficient supporting force can be applied to the blank holder 15 even if the number and area where the cushion pins 1A can be arranged are limited.
- the cushion pin 1B of the present embodiment With reference to FIG. 3, the cushion pin 1B of the present embodiment will be described. However, the cushion pin 1B of the present embodiment is different from the cushion pin 1A of the first embodiment only in the configuration of the main body, and therefore only the configuration will be described in detail. Moreover, while attaching
- a main body portion and a partition wall are constituted by a plurality of cylindrical members 9 arranged so that the central axes are arranged in a line on a common straight line.
- the cylindrical member 9 is connected to a large-diameter portion 9a having an outer diameter corresponding to the inner diameter of the outer cylindrical member 6 and an end portion on the lower side of the large-diameter portion 9a, and an outer portion corresponding to the inner diameter of the large-diameter portion 9a.
- a small diameter portion 9b having a diameter.
- the cylindrical member 9 is connected by inserting the small-diameter portion 9b of the adjacent cylindrical member 9 disposed on the upper end of the large-diameter portion 9a. At that time, the small-diameter portion 9b protrudes toward the inner peripheral surface side of the main body portion configured by connecting the cylindrical members 9, and serves as a partition wall for forming a spring chamber.
- the main body portion is configured by sandwiching the annular member 3 between the adjacent cylindrical members 2.
- the main-body part is comprised by connecting the some cylindrical member 9.
- the main body of the present invention is not limited to such a configuration.
- a member in which a cylindrical member and a partition wall are integrally formed may be used as the main body, or a partition member may be formed by fitting a ring-shaped member inside the cylindrical member.
- the rod is composed of a plurality of rod members 4.
- the rod of the present invention is not limited to such a configuration.
- the rod may be configured by fitting a ring-shaped member into a rod-shaped member.
- you may use the member integrally molded so that it may have a rod part and a collar part as a rod.
- a rod composed of one member may be more likely to cause stress concentration than a rod composed of a plurality of members.
- the cushion pins 1 ⁇ / b> A and 1 ⁇ / b> B include the outer cylinder member 6, the piston member 7, and the cap member 8.
- the cushion pin of the present invention is not limited to such a configuration, and it is not always necessary to include these members.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Springs (AREA)
Abstract
Description
まず、図1を参照して、本実施形態のクッションピン1Aを用いたプレス成形装置10について説明する。
図3を参照して、本実施形態のクッションピン1Bについて説明する。ただし、本実施形態のクッションピン1Bは、第1実施形態のクッションピン1Aと本体部の構成のみが異なるので、その構成についてのみ詳細に説明する。また、第1実施形態のクッションピン1Aと同様の構成については同じ符号を付すとともに、それらについての説明は省略する。
Claims (7)
- 筒状の本体部と、
前記本体部の内部で所定の間隔を存して前記本体部の軸線方向に並ぶように配置され、複数のバネ室を形成する複数の環状の隔壁と、
前記バネ室の各々に配置されたコイルバネと、
前記本体部の内部で前記隔壁の開口部を通るように配置され、前記本体部から少なくとも一端が突出するロッドとを備え、
前記ロッドには、前記開口部に摺動可能な径を有するロッド部、及び、複数の鍔部が設けられ、
前記鍔部は、前記バネ室の各々の内部に位置し、前記コイルバネによって付勢されていることを特徴とするクッションピン。 - 請求項1に記載のクッションピンであって、
前記本体部は、複数の筒状部材を連接して構成され、
前記複数の筒状部材は、中心軸線が共通の軸線上に一列に並ぶように配置されていることを特徴とするクッションピン。 - 請求項1に記載のクッションピンであって、
前記本体部と前記隔壁とは、別体であることを特徴とするクッションピン。 - 請求項1に記載のクッションピンであって、
前記ロッド部は、複数のロッド部材を前記本体部の軸線方向に並べることによって構成されていることを特徴とするクッションピン。 - 請求項4に記載のクッションピンであって、
前記ロッド部材の各々は、前記鍔部と、該鍔部を付勢する前記コイルバネとは反対側に向かって延びる棒状部とを有することを特徴とするクッションピン。 - 請求項1に記載のクッションピンであって、
前記隔壁の開口部にガイドブッシュが設けられていることを特徴とするクッションピン。 - 請求項1に記載のクッションピンであって、
前記本体部が内部に配置される外筒部材を備えていることを特徴とするクッションピン。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/505,876 US10603708B2 (en) | 2014-08-26 | 2015-04-21 | Cushion pin |
CA2955864A CA2955864C (en) | 2014-08-26 | 2015-04-21 | Cushion pin |
CN201580030456.5A CN106457344B (zh) | 2014-08-26 | 2015-04-21 | 缓冲销 |
BR112017001138-7A BR112017001138B1 (pt) | 2014-08-26 | 2015-04-21 | Pino de coxim |
JP2016544983A JP6199499B2 (ja) | 2014-08-26 | 2015-04-21 | クッションピン |
GB1700318.7A GB2543977B (en) | 2014-08-26 | 2015-04-21 | Cushion Pin |
MX2017002465A MX2017002465A (es) | 2014-08-26 | 2015-04-21 | Perno amortiguador. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014171317 | 2014-08-26 | ||
JP2014-171317 | 2014-08-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016031297A1 true WO2016031297A1 (ja) | 2016-03-03 |
Family
ID=55399203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2015/062052 WO2016031297A1 (ja) | 2014-08-26 | 2015-04-21 | クッションピン |
Country Status (9)
Country | Link |
---|---|
US (1) | US10603708B2 (ja) |
JP (1) | JP6199499B2 (ja) |
CN (1) | CN106457344B (ja) |
BR (1) | BR112017001138B1 (ja) |
CA (1) | CA2955864C (ja) |
GB (1) | GB2543977B (ja) |
MX (1) | MX2017002465A (ja) |
MY (1) | MY179334A (ja) |
WO (1) | WO2016031297A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018163701A1 (ja) * | 2017-03-09 | 2018-09-13 | 本田技研工業株式会社 | クッションピン |
FR3133772B1 (fr) * | 2022-03-22 | 2024-02-09 | Psa Automobiles Sa | ensemble de poussée pour presse d’emboutissage |
Citations (4)
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JPS5028309Y1 (ja) * | 1973-08-15 | 1975-08-21 | ||
EP0614711A1 (fr) * | 1993-03-09 | 1994-09-14 | Sollac | Procédé et dispositif d'emboutissage de flans métalliques pour la réalisation de pièces dites à embouti profond |
JPH10305332A (ja) * | 1996-08-23 | 1998-11-17 | Isao Takatsuka | 複数のバネをセットした圧力ユニット |
JP2004160519A (ja) * | 2002-11-14 | 2004-06-10 | Komatsu Aatec Kk | ダイクッションの均圧化クッションピン、それを用いたダイクッション、それを用いたプレス機械、およびそのクッションピンの均圧化によるプレス成形方法 |
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US301944A (en) * | 1884-07-15 | winget | ||
US1619069A (en) * | 1924-08-06 | 1927-03-01 | Marquette Tool & Mfg Co | Blank-holding means |
US1648394A (en) * | 1926-08-25 | 1927-11-08 | Frank G Vila | Automobile bumper |
US2202050A (en) * | 1939-05-02 | 1940-05-28 | Gibbons John | Cushioned bumper |
US2547800A (en) * | 1948-03-15 | 1951-04-03 | West Charles Alfred | Temperature controlled actuating mechanism |
US2687898A (en) * | 1950-12-26 | 1954-08-31 | Frank W Schwinn | Spring fork construction for bicycles |
JPS5028309A (ja) * | 1973-07-11 | 1975-03-22 | ||
JPS6320437U (ja) | 1986-07-24 | 1988-02-10 | ||
US5511868A (en) * | 1994-10-12 | 1996-04-30 | Caterpillar Inc. | Booster recoil mechanism for endless track machine |
JP3485366B2 (ja) * | 1994-10-20 | 2004-01-13 | 株式会社小松製作所 | 無限軌道帯の遊動輪緩衝装置 |
US7261286B2 (en) * | 2002-12-11 | 2007-08-28 | Barnes Group Inc. | Two stage hood lift spring assembly |
US8292274B2 (en) * | 2003-01-10 | 2012-10-23 | Barnes Group Inc. | Dampened compression spring rod |
US7229140B2 (en) * | 2004-04-01 | 2007-06-12 | Clark Equipment Company | Pre-tensioned spring track tensioning system |
US8662264B2 (en) * | 2008-07-11 | 2014-03-04 | Inventio Ag | Safety brake device with force store element |
CN201554805U (zh) * | 2009-10-30 | 2010-08-18 | 西格玛集团有限公司 | 弹簧减震器 |
-
2015
- 2015-04-21 MY MYPI2017700205A patent/MY179334A/en unknown
- 2015-04-21 WO PCT/JP2015/062052 patent/WO2016031297A1/ja active Application Filing
- 2015-04-21 US US15/505,876 patent/US10603708B2/en active Active
- 2015-04-21 CN CN201580030456.5A patent/CN106457344B/zh active Active
- 2015-04-21 JP JP2016544983A patent/JP6199499B2/ja active Active
- 2015-04-21 MX MX2017002465A patent/MX2017002465A/es unknown
- 2015-04-21 GB GB1700318.7A patent/GB2543977B/en active Active
- 2015-04-21 BR BR112017001138-7A patent/BR112017001138B1/pt active IP Right Grant
- 2015-04-21 CA CA2955864A patent/CA2955864C/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5028309Y1 (ja) * | 1973-08-15 | 1975-08-21 | ||
EP0614711A1 (fr) * | 1993-03-09 | 1994-09-14 | Sollac | Procédé et dispositif d'emboutissage de flans métalliques pour la réalisation de pièces dites à embouti profond |
JPH10305332A (ja) * | 1996-08-23 | 1998-11-17 | Isao Takatsuka | 複数のバネをセットした圧力ユニット |
JP2004160519A (ja) * | 2002-11-14 | 2004-06-10 | Komatsu Aatec Kk | ダイクッションの均圧化クッションピン、それを用いたダイクッション、それを用いたプレス機械、およびそのクッションピンの均圧化によるプレス成形方法 |
Also Published As
Publication number | Publication date |
---|---|
GB2543977A (en) | 2017-05-03 |
US10603708B2 (en) | 2020-03-31 |
GB2543977B (en) | 2020-06-17 |
GB201700318D0 (en) | 2017-02-22 |
CN106457344B (zh) | 2018-12-11 |
MY179334A (en) | 2020-11-04 |
BR112017001138A2 (pt) | 2017-11-14 |
CA2955864A1 (en) | 2016-03-03 |
BR112017001138B1 (pt) | 2022-12-06 |
JP6199499B2 (ja) | 2017-09-20 |
CA2955864C (en) | 2018-11-27 |
US20170266709A1 (en) | 2017-09-21 |
JPWO2016031297A1 (ja) | 2017-04-27 |
CN106457344A (zh) | 2017-02-22 |
MX2017002465A (es) | 2017-11-23 |
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