JP5613449B2 - Cooling apparatus and cooling method for drawing mold - Google Patents
Cooling apparatus and cooling method for drawing mold Download PDFInfo
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Description
本発明は、例えばプレス工場等において鋼板をブランキングした後、ドロー型で絞りを行うプレス成形時の加工熱を抑制し、熱膨張による上型の焼付けや、それに伴う鋼板の亀裂、カジリなどを防止する技術に関する。 The present invention, for example, after blanking a steel sheet in a press factory or the like, suppresses the processing heat during press forming in which drawing is performed with a draw mold, and the upper die is baked due to thermal expansion and the cracks and galling of the steel sheet associated therewith. It relates to technology to prevent.
従来、例えば自動車などに使用する高張力鋼板等の鋼板をドロー成形する際、上型とブランクホルダで鋼板を挟持した後、下型との間で深絞り成形を行うような加工を連続して行うと、特に上型の深絞り側の型合わせ面が加工熱により焼き付くことがあり、このため、そのときには設備を停止して補修作業を行っている。
これは、深絞り側の型合わせ面において、鋼板が成形される際に引き延ばされた鋼板が型合わせ面に沿って摺動しながら流れ込むため同部に摩擦熱が集中し、型合わせ面の側面が膨張することで鋼板と一定のクリアランスを確保できなくなり、鋼板に亀裂やカジリなどの成形品質不良が発生するとともに、上型の型合わせ面も焼き付くため補修作業が必要になるというものである。
Conventionally, for example, when drawing a steel plate such as a high-tensile steel plate used in an automobile, the steel plate is sandwiched between an upper die and a blank holder, and then processing such as deep drawing between the lower die is continuously performed. If this is done, the die-matching surface on the deep drawing side of the upper die may be seized due to processing heat. For this reason, the equipment is stopped and repair work is performed at that time.
This is because, on the die-matching surface on the deep drawing side, the steel sheet stretched when the steel plate is formed flows while sliding along the die-matching surface, so frictional heat concentrates on the same part, and the die-matching surface As a result of the expansion of the side surface, it becomes impossible to secure a certain clearance with the steel sheet, the steel sheet will suffer from molding quality defects such as cracks and galling, and the upper mold matching surface will also seize and repair work is required. is there.
そこで、深絞り加工において、ドロー型から発生する加工熱に対する対策として、ドロー型に冷却液を噴出させて冷却する水冷方式や、エア等を吹き付けて冷却する空冷方式が知られているが、前者の水冷方式の場合、急激な温度変化の繰り返しによって冷却部分に亀裂等が生じやすくなるだけでなく、後工程で拭き取り作業が必要になることで作業性の低下を招きやすくなる。また、後者の空冷方式として、上型と下型の金型面にエア抜き穴を設け、このエア抜き穴の特定箇所に、電磁弁を介して圧縮エア源を接続し、プレスの下死点の信号を受けると、電磁弁が作動してエア抜き穴の特定箇所に圧縮エアを送るようにした技術(例えば、特許文献1参照。)が知られている。 Therefore, as a countermeasure against the processing heat generated from the draw mold in deep drawing, a water cooling system that cools the draw mold by jetting a cooling liquid and an air cooling system that cools by blowing air or the like are known. In the case of this water cooling method, cracks and the like are likely to be generated in the cooling portion due to repeated rapid temperature changes, and wiping work is required in a subsequent process, which leads to a decrease in workability. In addition, as the latter air cooling method, air vent holes are provided in the upper and lower mold surfaces, and a compressed air source is connected to a specific location of the air vent hole via a solenoid valve, and the bottom dead center of the press When the signal is received, a technique (for example, refer to Patent Document 1) is known in which a solenoid valve is operated to send compressed air to a specific portion of an air vent hole.
ところが、前記特許文献1の技術の場合、金型にエア抜き穴などの専用の通路を設ける必要があるばかりでなく、エアの供給は、上型が下死点に達したことをセンサが検出することが前提となっているため装置構成が複雑化し、しかも、ドロー型を冷却する場合、短時間冷風を吹き付けるだけでは、型表面の加工熱の冷却は可能であるが、型自身の膨張を防ぐことが難しいという問題がある。 However, in the case of the technique disclosed in Patent Document 1, it is necessary not only to provide a dedicated passage such as an air vent hole in the mold, but also to supply air, the sensor detects that the upper mold has reached the bottom dead center. Therefore, when the draw mold is cooled, it is possible to cool the mold surface by simply blowing cold air for a short time. There is a problem that it is difficult to prevent.
そこで本発明は、絞り成形金型の成形部をより効果的に冷却することで、連続成形の場合でも型自身の膨張を抑制でき、しかも冷却構造を簡素化して簡易に構成できるようにすることを目的とする。 Accordingly, the present invention is to more effectively cool the molding part of the drawing mold so that the expansion of the mold itself can be suppressed even in the case of continuous molding, and the cooling structure can be simplified and configured easily. With the goal.
上記目的を達成するため本発明は、上型の所定箇所に鋳抜き孔が形成される絞り成形金型の成形部を冷却する冷却装置において、前記上型の少なくとも一方側のビード部の裏側に位置する鋳抜き孔の内壁周囲のうち、少なくとも隣接する鋳抜き孔または外気に連通する連通孔部分を熱遮蔽板によって覆い、このビード部の裏側に位置する鋳抜き孔内に、内部空間の一部を局部的に狭く囲うことのできる囲繞部材を設けるとともに、これらビード部の裏側に位置する鋳抜き孔内に冷却装置本体を配設し、この冷却装置本体から前記囲繞部材で囲まれる囲繞空間内に冷風を供給するようにした。 In order to achieve the above object, the present invention provides a cooling device for cooling a forming part of a drawing mold in which a casting hole is formed at a predetermined position of the upper mold, and on the back side of a bead part on at least one side of the upper mold. Of the periphery of the inner wall of the cast hole that is positioned, at least the adjacent cast hole or the communicating hole part that communicates with the outside air is covered with a heat shielding plate, and a part of the inner space is placed in the cast hole located on the back side of the bead part. An enclosure member that can locally enclose the portion is provided, and a cooling device main body is disposed in a cast hole located on the back side of the bead portion, and an enclosure space surrounded by the surrounding member from the cooling device main body Cold air was supplied inside.
このような上型の鋳抜き孔は、例えば金型の軽量化等の観点から形成されるものであるが、このような絞り成形金型の成形部を冷却するにあたり、加工熱によって温度が一番上がり易い深絞り側のビード部の裏側に位置する上型の鋳抜き孔を利用して冷却するようにする。このため、例えばビード部の裏側に位置する鋳抜き孔内のうち、成形部に一番近い箇所を囲繞部材で狭く囲って、この囲繞空間内に冷風を送り込むことで、成形時に発生する加工熱を効果的に冷却できるようにする。また、この鋳抜き孔内の内壁周囲の所定箇所に熱遮蔽板を配設することで、この鋳抜き孔を準密閉状態にすることができ、例えば、囲繞空間から抜け出した冷風を利用して型全体を冷却することができ、型自身の膨張を防ぐこともできるようになる。 Such an upper die-cut hole is formed from the viewpoint of, for example, reducing the weight of the mold, but the temperature of the mold is reduced by the processing heat when the molded part of such a drawing mold is cooled. Cooling is performed by using an upper die-casting hole located on the back side of the deep drawing bead portion that is likely to rise. For this reason, for example, in the cast hole located on the back side of the bead part, the part closest to the forming part is narrowly surrounded by the surrounding member, and the processing heat generated at the time of forming is sent by sending cold air into the surrounding space. To effectively cool. In addition, by arranging a heat shielding plate at a predetermined location around the inner wall in the cast hole, the cast hole can be put in a semi-sealed state, for example, using cold air that has escaped from the surrounding space. The entire mold can be cooled, and the mold itself can be prevented from expanding.
また本発明では、前記囲繞部材として、囲繞空間の上面と幅方向の片側側面を覆うことができ且つ少なくとも長手方向の両側側面のいずれか一方が開放される断面L字型形状か、または、囲繞空間の上面と側面を覆うことができ且つ上面か側面のいずれかに孔部が形成される箱型形状とした。
このように、囲繞部材で囲まれる囲繞空間部に、孔部や開放部を設けて完全密封しないことにより、結露を防止できるとともに、孔部や開放部から放出された冷風によって、鋳抜き孔の内部が冷却され、型全体を冷却する効果が高まる。
In the present invention, the surrounding member has an L-shaped cross section that can cover the upper surface of the surrounding space and one side surface in the width direction, and at least one of both side surfaces in the longitudinal direction is open, or The box shape is such that the upper and side surfaces of the space can be covered and a hole is formed on either the upper surface or the side surface.
In this way, by providing a hole and an opening in the surrounding space surrounded by the surrounding member and not completely sealing, dew condensation can be prevented and cold air discharged from the hole and the opening can prevent The inside is cooled, and the effect of cooling the entire mold is enhanced.
また本発明では、前記冷却装置本体として、工場エアの供給を受けて冷風を発生することのできる低温空気発生器を使用するようにした。
このような低温空気発生器としては、例えば、いわゆるボルテックス効果を利用し、圧縮空気の供給を受けると冷風を発生することができるような装置が適用可能である。
In the present invention, a low-temperature air generator capable of generating cold air by receiving supply of factory air is used as the cooling device body.
As such a low-temperature air generator, for example, an apparatus that uses a so-called vortex effect and can generate cold air when supplied with compressed air can be applied.
上型のビード部の裏側に位置する鋳抜き孔の内部空間の一部を囲繞部材によって狭く囲い、鋳抜き孔内に配置した冷却装置本体から送られる冷風を囲繞空間内に供給することで、ビード部近傍の成形部で生ずる加工熱を効果的に冷やすことができるとともに、鋳抜き孔の内壁の所定箇所に熱遮蔽板を設けることにより、型自体の膨張を抑制することができて成形品質が良好となり、しかも絞り成形作業を効率的に行うことができる。
この際、囲繞部材として、少なくとも長手方向の両側側面のいずれか一方が開放される断面L字型形状か、または、上面か側面のいずれかに孔部が形成される箱型形状にすれば、結露を防止できるとともに、鋳抜き孔の内部が冷却され、型全体を冷却する効果が高まる。
また冷却装置本体として、工場エアの供給を受けて冷風を発生することのできる低温空気発生器を使用すれば簡素に構成できる。
By enclosing a part of the inner space of the casting hole located on the back side of the bead portion of the upper mold narrowly by the surrounding member and supplying cold air sent from the cooling device main body arranged in the casting hole into the surrounding space, The processing heat generated in the molding part near the bead part can be effectively cooled, and by providing a heat shielding plate at a predetermined location on the inner wall of the punched hole, expansion of the mold itself can be suppressed and molding quality can be suppressed. And drawing work can be performed efficiently.
At this time, as the surrounding member, if at least one of both side surfaces in the longitudinal direction is an L-shaped cross section that is open, or a box shape in which a hole is formed on either the upper surface or the side surface, Condensation can be prevented, and the inside of the cast hole is cooled, thereby increasing the effect of cooling the entire mold.
Further, if a low temperature air generator capable of generating cold air by receiving supply of factory air is used as the cooling device main body, it can be simply configured.
本発明の実施の形態について添付した図面に基づき説明する。
本発明に係る絞り成形金型の冷却装置は、成形部をより効果的に冷却することにより、連続成形の場合でも型自身の膨張を抑制でき、しかも冷却構造が簡素化されて簡易に構成できるようにされており、上型に形成された鋳抜き孔を利用して冷却することを特徴としている。
Embodiments of the present invention will be described with reference to the accompanying drawings.
The drawing mold cooling apparatus according to the present invention can effectively suppress the expansion of the mold itself even in the case of continuous molding by cooling the molding part more effectively, and the cooling structure can be simplified and configured easily. It is characterized by cooling using the cast hole formed in the upper mold | type.
そこで、本発明の冷却装置について説明する前に、本冷却装置が適用される絞り成形金型の作動等について、図7に基づき説明する。
絞り成形金型1は、プレスボルスター2上に載置される下型3と、プレスラム4によって昇降自在な上型5と、クッションピン6によって支持されるブランクホルダ7を備えており、図7(a)に示すように、上型5が上昇した状態で、ブランクホルダ7上に鋼板等のワークWが載置されると、図7(b)に示すように、上型5が降下してワークWをブランクホルダ7と上型5で挟み込み、更に、図7(c)に示すように、上型5とブランクホルダ7が降下して、ワークWを下型3と上型5の成形部5aによって絞り成形する。
Therefore, before describing the cooling apparatus of the present invention, the operation of the drawing mold to which the present cooling apparatus is applied will be described with reference to FIG.
The drawing mold 1 includes a lower mold 3 placed on a press bolster 2, an upper mold 5 that can be moved up and down by a press ram 4, and a blank holder 7 supported by cushion pins 6. FIG. When the work W such as a steel plate is placed on the blank holder 7 with the upper mold 5 raised as shown in a), the upper mold 5 is lowered as shown in FIG. 7B. The workpiece W is sandwiched between the blank holder 7 and the upper die 5, and as shown in FIG. 7C, the upper die 5 and the blank holder 7 are lowered so that the workpiece W is molded into the lower die 3 and the upper die 5. Drawing is performed by 5a.
この際、上型5の成形部5aの近傍の型合わせ面には、ビード部bが設けられており、このビード部bとブランクホルダ7によってワークWを挟持するようにしているが、特に深絞り成形のようにワークの変形量が大きいような場合は、ビード部bがいわゆる流しビードとして作用するようになり、ビード部bを通してワークWの一部が成形部5a側に流れ込むようになる。このため、ビード部b近傍のうち、特に成形部5a付近の側面まわりは摩擦熱によって温度が高まると同時に上型5の同部が膨張し、深絞り成形を連続的に繰り返すような場合には、上型5が焼き付いたり、ワークWに亀裂やカジリなどの不具合が生じるようになる。 At this time, a bead portion b is provided on the die-matching surface of the upper die 5 in the vicinity of the molding portion 5a, and the workpiece W is sandwiched between the bead portion b and the blank holder 7; When the deformation amount of the workpiece is large as in the case of drawing, the bead portion b acts as a so-called sink bead, and a part of the workpiece W flows into the molding portion 5a side through the bead portion b. For this reason, in the vicinity of the bead portion b, particularly around the side surface in the vicinity of the molding portion 5a, the temperature of the upper die 5 expands at the same time due to frictional heat, and the deep drawing is continuously repeated. The upper die 5 is burned out, and the workpiece W has problems such as cracks and galling.
そこで本発明は、このような絞り成形金型1における加工熱による不具合を防止するためなされたものである。 Therefore, the present invention has been made to prevent problems caused by processing heat in such a drawing mold 1.
なお、前記上型5には、軽量化などを目的として、図1、図2に示すような鋳抜き孔8や、各鋳抜き孔8同士、及び外気と連通するための連通孔9が形成されている。また、成形部5aの形状は、図の右側の形状の方が左側に較べて深絞り側とされ、このような上型5で成形すると、図の右側のビード部bの方が、左側のビード部bより材料の流れ込みが多くなって、摩擦による加工熱が大きくなり、焼き付き等の問題が生じやすくなる。そこで、本発明の場合は、図1、2の右側の深絞り側の成形部5a周縁を冷却する場合を例にとって説明する。またこの際、右側のビード部bの裏側には、二箇所の鋳抜き孔8が形成されているため、この鋳抜き孔8を、便宜上、第1鋳抜き孔8a、および第2鋳抜き孔8bと称する。 For the purpose of reducing the weight, the upper die 5 is formed with a hole 8 as shown in FIGS. 1 and 2, each hole 8, and a communication hole 9 for communicating with the outside air. Has been. Further, the shape of the molded part 5a is the deep drawing side on the right side of the figure compared to the left side, and when the upper part 5 is molded, the bead part b on the right side of the figure is on the left side. The material flows more than the bead portion b, the processing heat due to friction increases, and problems such as seizure tend to occur. Therefore, in the case of the present invention, the case where the periphery of the deep drawing side 5a on the right side of FIGS. Further, at this time, since two casting holes 8 are formed on the back side of the right bead portion b, the first casting hole 8a and the second casting hole are used as the casting holes 8 for convenience. This is referred to as 8b.
まず、図2、図3に示すように、一方側の列の各鋳抜き孔8と連通孔9を利用してエアホース11を配置し、上流側の端部をエアカプラ12を介して工場エア源13に接続し、下流側の端部を、第1鋳抜き孔8a内に配設される冷却装置本体14に接続する。 First, as shown in FIGS. 2 and 3, an air hose 11 is arranged using each of the cast holes 8 and the communication holes 9 in one row, and the upstream end is connected to the factory air source via the air coupler 12. 13 and the downstream end is connected to the cooling device main body 14 disposed in the first cast hole 8a.
この冷却装置本体14は、圧縮空気が送られると、ボルテックス効果により低温を発生するいわゆるボルテックスチューブが使用されており、外気温度から最大30℃程度低い温度に冷却できる性能を有するとともに、冷却した空気を冷却ホース11kに送り込み、冷気が抜かれた温かい排気ガスを温風ホース11hに送り込んで排気できるようにされている。そして、冷却ホース11kの先端部は、後述する第1、第2鋳抜き孔8a、8b内に形成される囲繞空間17内に臨んでおり、温風ホース11hの先端部は、上型5の外部空間に臨んでいる。 This cooling device main body 14 uses a so-called vortex tube that generates a low temperature by a vortex effect when compressed air is sent, and has a performance capable of cooling from the outside air temperature to a maximum of about 30 ° C. Is sent to the cooling hose 11k, and the warm exhaust gas from which the cool air has been removed is sent to the hot air hose 11h so that it can be exhausted. And the front-end | tip part of the cooling hose 11k has faced the surrounding space 17 formed in the 1st, 2nd casting hole 8a, 8b mentioned later, and the front-end | tip part of the warm air hose 11h is the upper mold | type 5's. Facing outside space.
前記第1、第2鋳抜き孔8a、8bの内部周壁には、図4に示すように、連通孔9の開口部を覆って熱が外部に逃げ出すのを遮蔽するための熱遮蔽板15が配設され、第1、第2鋳抜き孔8a、8bを準密閉状態にするとともに、成形部5a寄りの壁面と底面の間には、内部空間の一部を狭く囲うことのできる断面L字型の囲繞部材16が設けられ、この囲繞部材16によって囲繞空間17が画成されている。また、この囲繞部材16の長手方向の両側部は開放状態にされ、前述のように、囲繞空間17内に冷風ホース11kから冷風を送り込むことができるようにされている。 As shown in FIG. 4, a heat shielding plate 15 for covering the opening of the communication hole 9 and shielding heat from escaping to the outside is provided on the inner peripheral walls of the first and second cast holes 8a and 8b. The first and second punching holes 8a and 8b are arranged in a semi-sealed state, and a L-shaped cross section that can narrowly surround a part of the internal space between the wall surface and the bottom surface near the molding portion 5a. A mold surrounding member 16 is provided, and an surrounding space 17 is defined by the surrounding member 16. Further, both side portions of the surrounding member 16 in the longitudinal direction are opened, and the cold air can be fed into the surrounding space 17 from the cold air hose 11k as described above.
このため、図5、図6に示すように、第1鋳抜き孔8aの成形部5a寄り側の熱遮蔽板15には、エアホース11を挿通させるための挿通孔15aが設けられ、また第1鋳抜き孔8aの成形部5a側とは反対側の熱遮蔽板15には、温風ホース11hや冷却装置本体14を挿通させるための挿通孔15bが設けられている。 For this reason, as shown in FIGS. 5 and 6, the heat shielding plate 15 closer to the molding portion 5a of the first cast hole 8a is provided with an insertion hole 15a for allowing the air hose 11 to pass therethrough. The heat shielding plate 15 on the side opposite to the molding part 5a side of the cast hole 8a is provided with an insertion hole 15b through which the hot air hose 11h and the cooling device main body 14 are inserted.
なお、前記囲繞部材16は、囲繞空間17を画成するため、本実施例では断面L字型形状にし、長手方向の両側部を開放状態にしているが、この両側部を開放して完全密封しないのは結露を防止するためである。また、この両側部を開放する代わりに、一方側側部だけを開放したり、囲繞部材16の天井面部分に隙間を設けたり、または、幅方向の側面部分に隙間を設けたりするようにしてもよい。
また、囲繞部材16の形状を、上面と側面を覆う箱型形状にしてもよく、この場合も任意の箇所に隙間等を設けて、囲繞空間17内の冷気が隙間を通して鋳抜き孔8a、8b内に逃げ出すようにしておくことが好ましい。
また、囲繞部材16の材質についても、加工熱に対して耐久性のある鋼材等が適しているが、これらに限定されるものではない。
In addition, in order to define the surrounding space 17, the surrounding member 16 has an L-shaped cross section in the present embodiment, and both side portions in the longitudinal direction are opened. However, both side portions are opened and completely sealed. The reason for not doing so is to prevent condensation. Also, instead of opening both sides, only one side is opened, a gap is provided in the ceiling surface portion of the surrounding member 16, or a gap is provided in the side surface portion in the width direction. Also good.
Further, the shape of the surrounding member 16 may be a box shape covering the upper surface and the side surface. In this case as well, a gap or the like is provided at an arbitrary location, and the cold air in the surrounding space 17 passes through the gaps and the punched holes 8a and 8b. It is preferable to escape inside.
Further, the material of the surrounding member 16 is suitably a steel material that is durable against processing heat, but is not limited thereto.
以上のようなエアホース11や、冷却装置本体14や、冷却ホース11kや、温風ホース11hや、熱遮蔽板15や、囲繞部材16等によって本冷却装置が構成されているが、このような冷却装置の作用等について説明する。 The present cooling device is constituted by the air hose 11, the cooling device main body 14, the cooling hose 11 k, the hot air hose 11 h, the heat shielding plate 15, the surrounding member 16, and the like. The operation of the apparatus will be described.
ドロー成形を行う際、作業者は成形型を不図示のプレスマシンに取り付け、プレスマシン近傍の工場エア源13をエアホース11先端のエアカプラ12に接続する。すると、工場エア源13から送られる圧縮空気は、エアカプラ12を通して冷却装置本体14に供給され、装置本体14内においてボルテック効果で冷却された冷風は、冷風ホース11kを通して囲繞空間17内に送り込まれる。また、これに伴って、冷気が抜き出された温風は、温風ホース11hから外部に排気される。 When performing the draw molding, the operator attaches the mold to a press machine (not shown), and connects the factory air source 13 near the press machine to the air coupler 12 at the tip of the air hose 11. Then, the compressed air sent from the factory air source 13 is supplied to the cooling device main body 14 through the air coupler 12, and the cold air cooled by the vortex effect in the device main body 14 is sent into the surrounding space 17 through the cold air hose 11k. Along with this, the hot air from which the cold air has been extracted is exhausted to the outside from the hot air hose 11h.
この際、冷気する時間や冷却温度などは外気温度や工場の環境等によって自由に設定することが可能であるが、冷却温度の設定の目安としては、夏場などの室温が上昇しやすい時期については、冬場に近い表面温度に近づけるため、表面温度が少なくとも10〜15℃程度になるように設定する。 At this time, the cooling time, cooling temperature, etc. can be set freely depending on the outside air temperature, factory environment, etc., but as a guideline for setting the cooling temperature, the time when room temperature is likely to rise such as in summer In order to approach the surface temperature close to winter, the surface temperature is set to be at least about 10 to 15 ° C.
そして、ブランクホルダ7上にワークWをセットし、上型5とブランクホルダ7によってワークWを挟み込むとともに、ワークWを降下させることでドロー成形を行うが、この際、図1、図2の図中右側の深絞り側のビード部bは、いわゆる流しビードとなり、材料の滑り込み量が大きくなって摩擦による加工熱が発生するが、冷却された囲繞空間17がその近傍に配置されているため、効果的に発熱部を冷却することができる。 Then, the workpiece W is set on the blank holder 7, the workpiece W is sandwiched between the upper mold 5 and the blank holder 7, and the workpiece W is lowered to perform draw molding. The bead portion b on the deep drawing side on the middle right side is a so-called sink bead, and the amount of sliding of the material is increased and processing heat due to friction is generated, but since the cooled surrounding space 17 is disposed in the vicinity thereof, The heat generating part can be effectively cooled.
また、囲繞部材16の両側の開放部から放出された冷風は、第1、第2鋳抜き孔8a、8b内全体を冷却するため、型表面の膨張を抑制することができ、連続したドロー成形を繰り返しても、補修等の必要なく作業することができる。 Further, since the cool air discharged from the open portions on both sides of the surrounding member 16 cools the entire inside of the first and second cast holes 8a and 8b, expansion of the mold surface can be suppressed, and continuous draw molding is performed. Even if it repeats, it can work without the need for repair.
なお、本発明は以上のような実施形態に限定されるものではない。本発明の特許請求の範囲に記載した事項と実質的に同一の構成を有し、同一の作用効果を奏するものは本発明の技術的範囲に属する。
例えば、本冷却装置本体14をビード部b直上または近傍の複数個所の鋳抜き孔8に設けるようにしてもよく、また、一方側のビード部b直上または近傍の鋳抜き孔8a、8bは二個に限定されるものではない。
さらに、工場エアを利用した他の低温空気発生器としては、前記実施形態のようなボルテックス効果を利用したもの以外に、例えば、ガスクーラーや冷凍式ガスクーラーなどを使用するものでもよい。
In addition, this invention is not limited to the above embodiments. What has substantially the same configuration as the matters described in the claims of the present invention and exhibits the same operational effects belongs to the technical scope of the present invention.
For example, the cooling device main body 14 may be provided in a plurality of cast holes 8 immediately above or in the vicinity of the bead portion b, and there are two cast holes 8a and 8b immediately above or near the bead portion b on one side. It is not limited to individual.
Furthermore, as another low-temperature air generator using factory air, for example, a gas cooler, a refrigeration gas cooler, or the like may be used in addition to the one using the vortex effect as in the above embodiment.
自動車の車体成形のための絞り成形時などにおいて、特に深絞り成形時の加工熱や、それに伴う金型膨張による成形品質の悪化等を防止できるので、今後の広い範囲での利用が期待される。 It can be expected to be used in a wide range in the future because it can prevent the heat of processing especially during deep drawing and deterioration of molding quality due to die expansion. .
1…絞り成形金型、5…上型、5a…成形部、8…鋳抜き孔、8a…第1鋳抜き孔、8b…第2鋳抜き孔、14…冷却装置本体、15…熱遮蔽板、16…囲繞部材、17…囲繞空間、b…ビード部。 DESCRIPTION OF SYMBOLS 1 ... Drawing mold, 5 ... Upper mold, 5a ... Molding part, 8 ... Cast hole, 8a ... First cast hole, 8b ... Second cast hole, 14 ... Cooling device main body, 15 ... Heat shielding plate , 16 ... Go member, 17 ... Go space, b ... Bead part.
Claims (4)
The cooling of the drawing mold according to claim 3, wherein a cooling device main body capable of constantly generating cold air using factory air is used for supplying cold air into the core hole. Method.
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CN107716735A (en) * | 2017-09-30 | 2018-02-23 | 苏州瑞宣达金属制品有限公司 | A kind of cooling pad of metallic article production high velocity ram machine |
CN109534659A (en) * | 2018-12-07 | 2019-03-29 | 长春汽四环汽车管路有限公司 | Tubing blows hot wind molding machine |
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CN103538225A (en) * | 2013-11-06 | 2014-01-29 | 重庆龙润汽车转向器有限公司 | Cooling and shaping tool of right shell for front evaporator assembly of vehicle air conditioner |
JP7297014B2 (en) | 2021-07-16 | 2023-06-23 | 株式会社ジーテクト | Press mold |
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JPS58116121U (en) * | 1982-02-03 | 1983-08-08 | 日産自動車株式会社 | press mold |
JPS5964218U (en) * | 1982-10-25 | 1984-04-27 | 池上化研工業株式会社 | mold |
JPS632519U (en) * | 1986-06-20 | 1988-01-09 | ||
JP2008023549A (en) * | 2006-07-20 | 2008-02-07 | Misumi Corp | Cooling device for gas spring and die apparatus |
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CN107716735A (en) * | 2017-09-30 | 2018-02-23 | 苏州瑞宣达金属制品有限公司 | A kind of cooling pad of metallic article production high velocity ram machine |
CN109534659A (en) * | 2018-12-07 | 2019-03-29 | 长春汽四环汽车管路有限公司 | Tubing blows hot wind molding machine |
CN109534659B (en) * | 2018-12-07 | 2021-08-13 | 长春一汽四环汽车管路有限公司 | Hot air forming device for blowing pipe |
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