JP2014034689A - Heating device for hardening steel plate - Google Patents

Heating device for hardening steel plate Download PDF

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JP2014034689A
JP2014034689A JP2012175106A JP2012175106A JP2014034689A JP 2014034689 A JP2014034689 A JP 2014034689A JP 2012175106 A JP2012175106 A JP 2012175106A JP 2012175106 A JP2012175106 A JP 2012175106A JP 2014034689 A JP2014034689 A JP 2014034689A
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workpiece
member
workpiece support
work
support member
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Seiji Ichikawa
誠治 市川
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Yac Denko Co Ltd
株式会社ワイエイシイデンコー
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PROBLEM TO BE SOLVED: To prevent a workpiece from being bent by bending of a workpiece support member, which supports a steel plate to be hardened as a workpiece in a heat chamber, caused by thermal expansion difference.SOLUTION: Heat chambers 17a-17g, each of which carries in and out a plate-shaped workpiece W along a carrying in and out direction along the horizontal direction, are provided in a furnace body 11. Each heat chamber is provided with a workpiece support device 25 which supports the workpiece W. The workpiece support device 25 includes: a plurality of workpiece support members 26 which are formed so as to extend along the carrying in and out direction of the workpiece W; a workpiece support tool which consists of an assembly of a plurality of columnar members 27 fixed to the top of each workpiece support member 26; and a heat shield member 30 which is mounted to each workpiece support member 26. The workpiece support device 25 supports the workpiece W in a state putting the workpiece W on the workpiece support tool consisting of the assembly of the columnar members 27, 27, etc. The heat shield member 30 suppresses heat emission from each workpiece support member 26 and the occurrence of convection above each workpiece support member 26.

Description

本発明は、焼入が施される鋼板をワークとして、焼入温度まで加熱する処理を行うのに適した鋼板焼入用加熱装置に関するものである。 The present invention is a steel sheet quenching is performed as a work, it relates to steel hardening heating apparatus suitable for performing the process of heating to quenching temperature.

最近、自動車等の車両の軽量化を図るために、車両の各部に用いる鋼板として高炭素鋼からなる薄鋼板を用いて、該薄鋼板に熱間プレスを施すことにより強度を確保することが行われるようになっている。 Recently, in order to reduce the weight of the vehicle such as an automobile, using thin steel plate made of high-carbon steel as a steel sheet used for each part of the vehicle, a line to secure the strength by performing hot press the thin steel sheet so that the crack. 素材鋼板に熱間プレスを施す際には、素材鋼板を850℃ないし950℃程度の焼入温度まで加熱した後、プレス加工を行うと同時に急冷して焼入を行う。 In making hot press for steel sheet, after heating to quenching temperature of about 950 ° C. to not 850 ° C. The steel sheet, performing quenching by quenching at the same time as performing the press working.

熱間プレスを行うためには、特許文献1に示されているように、鋼板を焼入温度まで加熱する鋼板焼入用加熱装置をプレス加工機の直前に配置しておく必要がある。 To perform hot pressing, as shown in Patent Document 1, it is necessary to place the steel hardening heating apparatus for heating the steel sheet to a quenching temperature just before the press working machine. この種の目的で用いる加熱装置は、特許文献2に示されているように、板状のワークがその板面を上下方向に向けた状態で水平方向に沿って搬入・搬出される加熱室を備えていて、該加熱室の内部でワークを加熱するように構成される。 Heating apparatus used in this type of purpose, as shown in Patent Document 2, a heating chamber in which the plate-shaped workpiece is carried in and out along the horizontal direction in a state in which the plate surface in the vertical direction equipped with, configured to heat the workpiece within the the heating chamber. 加熱室内には、搬入されたワークを載せて支持するワーク支持装置が設けられ、このワーク支持装置により支持されたワークが、上下から電気ヒータにより加熱される。 The heating chamber, the workpiece support device is provided for supporting put the carried-in workpiece, the workpiece supported by the workpiece support device is heated by the electric heater from above and below.

従来の加熱装置に設けられていたワーク支持装置は、図8に示すように、ワークWの搬入・搬出方向に沿って伸びるように形成されて相互間に間隔を隔てた状態で平行に並べて配置された複数のワーク支持部材1,1,…を備えていて、図示しない搬送装置のフォーク(ハンド)の上に載せられて加熱室内に搬入されたワークWを、複数のワーク支持部材1,1,…の上に載せた状態で支持するように構成されている。 The workpiece support device which is provided in the conventional heating device, as shown in FIG. 8, are formed so as to extend along the loading and unloading direction of the workpiece W are arranged in parallel in a state spaced therebetween arrangement by a plurality of workpiece support members 1 were, ... have a, a carried-in workpiece W into the heating chamber is placed on the fork of the transport device (not shown) (hand), a plurality of workpiece support members 1 It is configured to support at ... put thereon over.

特開2009−142852号公報 JP 2009-142852 JP 特開2008−291284号公報 JP 2008-291284 JP

室温(約25℃)にあるワークWが高温状態(例えば850℃以上)にある加熱室内に搬入されてワーク支持部材1,1,…の上に載せられると、ワーク支持部材1,1,…からワークWに熱が直接伝達される上に、ワーク支持部材1,1,…から放射された熱が低温のワークWに吸収され、またワーク支持部材1,1,…とワークWとの間の温度差により両者間に生じる対流により、ワーク支持部材1,1,…からワークWへと熱が運ばれるため、ワーク支持部材の上部の温度が低下する。 Room temperature (approximately 25 ° C.) to the workpiece W is carried into the heating chamber in a high temperature state (for example, 850 ° C. or higher) in the work support members 1, ... when is placed on the, workpiece support members 1, ... on the heat is transferred directly to the work W from the workpiece support members 1, ... radiated heat is absorbed by the cold of the workpiece W from and between the workpiece support members 1, ... and the work W by convection that occurs between them due to the temperature difference of, for workpiece support members 1, a ... heat is transported to the workpiece W, the temperature of the upper part of the work supporting member is lowered. そのため、ワーク支持部材1,1,…の上部が収縮して、ワーク支持部材に撓みが生じ、ワーク支持部材1,1,…は、図9に示されているように、下方に凸な形に湾曲する。 Therefore, the workpiece support members 1, ... top and contraction, cause deflection in the workpiece support member, a work support members 1, ..., as shown in Figure 9, the projecting downwardly form curved. 連続生産を行うために、加熱室内にワークが繰り返し投入されると、やがてワーク支持部材1,1,…が塑性変形して元の形状に戻ることができなくなるだけでなく、その変形量が増大する。 To perform continuous production, the workpiece is repeatedly charged into the heating chamber, eventually workpiece support members 1, ... not only will not be able to return to its original shape by plastic deformation, the deformation amount is increased to.

一方、ワーク(鋼板)Wは、加熱されることにより弾性係数及び降伏応力(又は0.2%耐力)が低下して、加熱前よりも変形し易くなるため、ワーク支持部材1,1,…が撓むと、それに合わせてワークWも撓むことになる。 On the other hand, the workpiece (steel sheet) W is the elastic modulus and yield stress by being heated (or 0.2% proof stress) is reduced, it becomes easy to deform than before heating, the workpiece support members 1, ... wrinkles and no, will be deflected also work W accordingly.

このようにワークWが撓むと、加熱されたワークを搬送装置により搬出する際に、搬送装置のフォークがワークと干渉するようになる。 With such work W is bent, when unloading by the transport device a heated workpiece, the fork of the transfer device is to interfere with the workpiece. またワークWが撓むと、搬送装置のフォークとワークとの接触面積が減少してワークの保持が不安定になるため、フォークがワークと干渉することと相俟って、搬送装置のハンドリング性が低下し、ワークの搬送に支障をきたすようになる。 Further, when the workpiece W is bent, the holding of the workpiece becomes unstable to decrease the contact area between the fork and the workpiece transfer unit, I can coupled with the fork interferes with the work, the handling of the transport device reduced, so that interfere with the transport of the work. 更に、搬送装置のフォークによるワークの保持が不安定になる結果、ワークを搬出する過程でワークの位置が正規の位置からずれることがあり、次工程で行うワークの加工に支障をきたすことがある。 Furthermore, as a result of holding the workpiece by the fork of the transfer device becomes unstable, position of the workpiece in the process of unloading the workpiece may deviate from the normal position, it may interfere with processing of the workpiece performed in the next step . これらの問題は、生産性を向上させるために生産タクトタイムを短くした場合に特に顕著に生じる。 These problems occur especially remarkable when a shorter production tact time in order to improve productivity.

上記のように、従来の鋼板焼入用加熱装置においては、加熱室内に低温のワークが投入された際にワーク支持装置を構成する長尺のワーク支持部材に変形が生じ、使用に伴ってその変形量が増大して、加熱室からワークを搬出する搬送装置のハンドリング性を低下させたり、ワークを搬出する過程でワークの位置ずれを生じさせたりするようになるため、加熱装置の運転を止めて、ワーク支持部材の形状を矯正したり、ワーク支持部材を交換したりするメンテナンス作業を短い周期で行うことが必要になり、鋼板焼入用加熱装置の維持に要するコストが高くなるという問題があった。 As described above, the in the conventional steel hardening heating device, variations in the work supporting elongated member occurs which constitutes a work supporting device when the cold work has been put into the heating chamber, with the use deformation amount is increased, or decrease the handling properties of the conveying apparatus for unloading a workpiece from the heating chamber, to become as or causing any positional deviation of the workpiece in the process of unloading the workpiece, stopping the operation of the heating device Te, or to correct the shape of the workpiece support member, it becomes necessary to perform maintenance work or to replace the workpiece support member in a short period, the cost required for the maintenance of the steel sheet hardening heating apparatus becomes high there were.

本発明の目的は、ワーク(鋼板)の搬送方向に伸びるワーク支持部材を加熱室に設けて、このワーク支持部材により支持したワークをヒータにより加熱する鋼板焼入用加熱装置において、加熱室内に低温のワークを搬入した際にワーク支持部材の上部と下部との間に温度差が生じてワーク支持部材が撓むのを防ぐことにある。 An object of the present invention is provided with a workpiece support member extending in the conveying direction of the workpiece (steel sheet) into the heating chamber, the steel sheet hardening heating apparatus for heating by a heater was supported workpiece by the workpiece support member, a low temperature in the heating chamber temperature difference is to prevent the work supporting member is bent generated between the upper and lower portions of the work supporting member when the work has been carried into the.

本発明は、鋼板であるワークが搬入・搬出される加熱室内に、搬入されたワークを載せて支持するワーク支持装置と、ワーク支持装置により支持されたワークを加熱するヒータとを備えて、ワークをヒータにより焼入温度まで加熱する鋼板焼入用加熱装置を対象とする。 The present invention, in the heating chamber to the workpiece is a steel sheet is carried into and out, comprises a workpiece support device for supporting put the carried-in work, and a heater for heating the workpiece supported by the workpiece supporting device, a work the target steel hardening heating device for heating up quenching temperature by the heater.

本発明においては、ワーク支持装置が、相互間に間隔を隔てて並べた複数のワーク支持部材と、各ワーク支持部材の上に配置されてワークを支持するワーク支持具とを備えている。 In the present invention, the workpiece supporting device comprises a plurality of workpiece support members arranged at intervals therebetween, and a work support which is arranged to support a workpiece on each workpiece support member. ワーク支持具は、ワーク支持部材にワークを直接載せたときのワーク支持部材とワークとの接触面積よりも小さい接触面積をもってワークの下面に接触するものである。 Work support is to contact with a small contact area than the contact area between the workpiece support member and the workpiece when carrying the workpiece to the workpiece support member directly to the lower surface of the workpiece. 本発明においてはまた、各ワーク支持部材及びワーク支持具が金属からなっている。 Also in the present invention, the workpiece supporting member and the work support is made of metal.

上記のように、ワーク支持部材にワークを直接載せたときのワーク支持部材とワークとの接触面積よりも小さい接触面積をもってワークの下面に接触するワーク支持具をワーク支持部材の上に配置して、該ワーク支持具によりワークを支持するようにすると、低温のワークが加熱室内に搬入されてワーク支持装置の上に載せられた際に、ワーク支持部材からワークへの熱伝達を抑制することができるため、ワーク支持部材の上部の温度が低下するのを抑えて、ワーク支持部材に撓みが生じるのを防ぐことができ、加熱室内へのワークの反復投入により、ワーク支持部材が塑性変形するのを防ぐことができる。 As described above, by arranging the work support in contact with a small contact area than the contact area between the workpiece support member and the workpiece when carrying the workpiece directly in the workpiece support member to the lower surface of the workpiece on a workpiece support member , when adapted to support the workpiece by the workpiece support, that a low temperature of the work during being carried into the heating chamber was placed on a workpiece supporting device, to suppress heat transfer to the workpiece from the workpiece support member can therefore, by suppressing the temperature of the top of the workpiece support member is lowered, it can prevent the bending on the workpiece support member is caused by repeated introduction of the workpiece into the heating chamber, the workpiece support member is plastically deformed it is possible to prevent.

このようにワーク支持部材が塑性変形するのを防ぐことができる結果、ワーク支持部材の上に支持されたワークの撓みを抑えることができるため、搬送装置のフォークがワークと干渉したり、搬送装置のフォークとワークとの接触面積が減少してワークの保持が不安定になったりするのを防いで、搬送装置のハンドリング性が低下するのを防ぐことができる。 Results that can be prevented in this way the workpiece support member to plastic deformation, it is possible to suppress the deflection of the workpiece supported on the workpiece support member, or interfere fork of the transfer device and workpiece, conveying device the contact area decreases between the fork and the workpiece prevents the retention of the workpiece may become unstable, the handling of the transport device can be prevented from being lowered. また搬送装置のフォークによるワークの保持が不安定になるのを防ぐことができることから、ワークを搬出する過程でワークの位置が正規の位置からずれるのを防ぐことができるため、次工程でのワークの加工を支障なく行わせることができる。 Also since it is possible to prevent the holding of the workpiece by the fork of the transfer device becomes unstable, because the position of the workpiece in the process of unloading the workpiece can be prevented from deviating from the normal position, the work in the next step processing can be performed without any trouble of.

本発明の好ましい態様では、上記ワーク支持具が互いに独立した複数のピン状部材又は柱状部材からなっている。 In a preferred embodiment of the present invention comprise a plurality of pin-like member or a columnar member in which the work support are independent from each other.

この場合、複数のピン状部材又は柱状部材は、互いに離間した状態で配置されていてもよく、隣り合うもの同士が接した状態で並べて配置されていても良い。 In this case, the plurality of pin-like member or a columnar member, may be arranged side by side in a state in which may optionally be disposed apart from each other, and adjacent groups are in contact.

上記のように、ワーク支持具を柱状部材またはピン状部材により形成すると、ワーク支持具とワークの下面との接触面積とワーク支持具の断面積とを十分に縮小することができるため、ワーク支持部材からワークへの熱伝達を抑制する効果を高めることができる。 As described above, when the work support is formed by the columnar member or pin-shaped member, since the cross-sectional area of ​​the contact area and the work support and the lower surface of the work support and the workpiece can be sufficiently reduced, the workpiece support it is possible to enhance the effect of suppressing the heat transfer to the workpiece from the member.

本発明の他の好ましい態様では、各ワーク支持部材に断熱材からなる熱遮蔽部材を装着して、該熱遮蔽部材により、各ワーク支持部材からワークへの熱放射と、各ワーク支持部材からワークへの対流の発生とを抑制する。 In another preferred embodiment of the present invention, by mounting the heat shield member made of a heat insulating material to each workpiece support member, the heat shielding member, the heat radiation to the workpiece from the workpiece support member, work from the workpiece support member It suppresses the convection of the occurrence of to.

上記のように、各ワーク支持部材に断熱材からなる熱遮蔽部材を装着しておくと、各ワーク支持部材から低温のワーク側に熱が放射するのを抑制することができるだけでなく、各ワーク支持部材からワークへの対流が生じるのを抑制して、対流により各ワーク支持部材からワーク側に熱が運ばれるのを抑制することができるため、高温のワーク支持部材から低温のワークへの熱の移動を抑制して、ワーク支持部材の上部の温度が低下するのを抑えることができる。 As described above, the previously fitted with a heat shield member made of a heat insulating material to each workpiece support member, not from the workpiece support member can only heat cold working side can be inhibited from radiating, each work from the support member to suppress the convection of the workpiece occurs, it is possible to suppress the heat is transferred to the workpiece side from the workpiece support member by convection, from the hot workpiece support member to the cold work heat movement to suppress the temperature of the top of the workpiece support member can be suppressed from being lowered.

本発明によれば、熱の移動の三原則である伝導、対流,放射のすべてに対して対策を講じて、ワーク支持部材からワーク側への熱の移動を抑制することができるので、ワーク支持装置の上に低温のワークが搬入されたときにワーク支持部材の上部の温度が低下してワーク支持部材に撓みが生じるのをより確実に防ぐことができる。 According to the present invention, conducting a three principles of heat transfer, convection, taking steps for all of the radiation, it is possible to suppress the transfer of heat to the work side of the workpiece support member, work support it can be prevented from decreased temperature of the top of the workpiece support member when the cold work has been carried onto the device bends in the workpiece support member occurs more reliably.

本発明によれば、ワーク支持部材にワークを直接載せたときのワーク支持部材とワークとの接触面積よりも小さい接触面積をもってワークの下面に接触するワーク支持具をワーク支持部材の上に配置して、該ワーク支持具によりワークを支持するようにしたので、低温のワークが加熱室内に搬入されてワーク支持装置の上に載せられた際に、ワーク支持部材からワークへの熱伝達を抑制することができる。 According to the present invention, to place the work support in contact with a small contact area than the contact area between the workpiece support member and the workpiece when carrying the workpiece directly in the workpiece support member to the lower surface of the workpiece on a workpiece support member Te, since to support the workpiece by the workpiece support, when the low temperature of the workpiece is placed is conveyed into the heating chamber on a workpiece support device, suppressing heat transfer to the workpiece from the workpiece support member be able to. 従って、ワーク支持部材の上に支持されたワークの撓みを抑えることができ、搬送装置のフォークがワークと干渉したり、搬送装置のフォークとワークとの接触面積が減少してワークの保持が不安定になったりするのを防いで、搬送装置のハンドリング性が低下するのを防ぐことができる。 Therefore, the deflection of the workpiece supported on the workpiece support member can be suppressed, or interfere fork of the transfer device and workpiece, decreases the contact area between the fork and the workpiece transport device holding the workpiece is not thereby preventing the or becomes stable, the handling of the transport device can be prevented from being lowered. また搬送装置のフォークによるワークの保持が不安定になるのを防ぐことができることから、ワークを搬出する過程でワークの位置が正規の位置からずれるのを防ぐことができるため、次工程でのワークの加工を支障なく行わせることができる。 Also since it is possible to prevent the holding of the workpiece by the fork of the transfer device becomes unstable, because the position of the workpiece in the process of unloading the workpiece can be prevented from deviating from the normal position, the work in the next step processing can be performed without any trouble of.

請求項2に記載された発明によれば、ワーク支持具を互いに独立した複数のピン状部材又は柱状部材により構成して、ワーク支持具とワークの下面との接触面積とワーク支持具の断面積とを十分に縮小することができるようにしたため、ワーク支持部材からワークへの熱伝達を抑制する効果を高めることができる。 According to the invention described in claim 2, constituted by a plurality of pin-like member or a columnar member which is independent of the work support each other, the cross-sectional area of ​​the contact area and the work support and the lower surface of the work support and the workpiece for that to be able to sufficiently reduce the bets, it is possible to enhance the effect of suppressing the heat transfer to the workpiece from the workpiece support member.

また請求項3に記載された発明では、ワーク支持部材からワークへの熱伝達を抑制するだけでなく、各ワーク支持部材に熱遮蔽部材を装着して、各ワーク支持部材からワークへの熱放射と各ワーク支持部材からワークへの対流の発生とを抑制するようにしたので、熱放射及び対流によるワーク支持部材からワークへの熱の移動をも抑制することができる。 In the invention described in claim 3, not only to suppress the heat transfer from the workpiece supporting member to the workpiece, by mounting a heat shield member in the workpiece support member, the heat radiation to the workpiece from the workpiece support member and since the respective work supporting member so as to suppress the occurrence of convection to the work, it is possible to suppress the transfer of heat from the workpiece supporting member to the workpiece by thermal radiation and convection. このように、本発明では、熱の移動の三原則である伝導、対流,放射のすべてに対して対策を講じて、ワーク支持部材からワーク側への熱の移動を抑制するので、加熱室内に低温のワークが搬入されてワーク支持装置の上に載せられた際に、ワーク支持部材の上部の温度が低下するのをより確実に防いで、ワーク支持部材に撓みが生じるのを防ぐことができる。 Thus, in the present invention, it is conducting a three principles of heat transfer, convection, taking steps for all of the radiation, so to suppress the transfer of heat to the work side of the workpiece support member, the heating chamber is carried cold work when placed on the top of the work supporting device, prevents the temperature of the top of the workpiece support member is reduced more reliably, it is possible to prevent the bending on the workpiece support member is caused .

本発明に係る鋼板焼入用加熱装置の一実施形態の外観を示した斜視図である。 Is a perspective view showing an appearance of an embodiment of a steel hardening heating device according to the present invention. 図1に示した鋼板焼入用加熱装置を正面から見て垂直面に沿って断面した断面図である。 Is a cross-sectional view taken along a vertical plane watches steel hardening heating apparatus shown in FIG. 1 from the front. 図2のIII−III線に沿って断面して本実施形態の内部構造を示した断面図である。 Is a sectional view showing the internal structure of this embodiment and taken along line III-III in FIG. 2. (A)及び(B)はそれぞれ本発明の実施形態においてワークを支持するワーク支持装置の要部の構成例を一部断面して示した正面図及び側面図である。 (A) and (B) are a front view and a side view an example of a configuration of main part of the work supporting device for supporting a workpiece shown in partial section in an embodiment of the present invention, respectively. (A)及び(B)はそれぞれ本発明で用いることができるワーク支持部材の変形例を示した正面図及び側面図である。 (A) and (B) are a front view and a side view showing a modification of the work supporting member that can be used in the present invention, respectively. (A)及び(B)はそれぞれ本発明の実施形態においてワークを支持するワーク支持装置の要部の他の構成例を一部断面して示した正面図及び側面図である。 (A) and (B) are a front view and a side view of another exemplary configuration of the main part shown by partially sectioned of the work supporting device for supporting the workpiece in an embodiment of the present invention, respectively. (A)及び(B)はそれぞれ本発明の実施形態においてワークを支持するワーク支持装置の要部の更に他の構成例を一部断面して示した正面図及び側面図である。 (A) and (B) are a front view and a side view of still another configuration example of the main part of the work supporting device for supporting a workpiece shown partially sectioned in the embodiment of the present invention, respectively. 従来の鋼板焼入用加熱装置におけるワークの支持構造を示した斜視図である。 It is a perspective view showing a supporting structure of the work in the conventional steel hardening heating device. 従来の鋼板焼入用加熱装置においてワーク支持部材及びその上に支持されたワークが撓んだ状態を示した側面図である。 Is a side view of the workpiece supporting member and the supported workpiece thereon showed a bent state in a conventional steel hardening heating device.

以下図面を参照して本発明の一実施形態を詳細に説明する。 Will be described in detail an embodiment of the present invention with reference to the drawings. 本実施形態では、熱間プレス加工を施す高炭素鋼等からなる薄板状の素材鋼板をワークWとして焼入温度まで加熱する鋼板焼入用加熱装置に本発明を適用する。 In the present embodiment, the present invention is applied to a thin plate of steel sheet composed of high carbon steel or the like subjected to a hot pressing a steel plate hardening heating device for heating up quenching temperature as the work W. 図1ないし図3は本実施形態の加熱装置の全体的な構成を示したものである。 1 to 3 illustrates an overall structure of a heating apparatus of the present embodiment. これらの図において、10は、断熱材を用いて直方体状に形成された炉体11と、炉体11の外面を覆う外装パネル12Aないし12Fとを備えた加熱装置本体である。 In these figures, 10 is a furnace body 11 which is formed in a rectangular parallelepiped shape with heat-insulating material, a heating apparatus body with a to no external panel 12A covering the outer surface of the furnace body 11 12F. 外装パネル12Aないし12Fのうち、12A及び12Bはそれぞれ炉体11の正面及び背面をそれぞれ覆う正面パネル及び背面パネル、12C及び12Dはそれぞれ炉体の左右側面を覆う左右側面パネル、12E及び12Fはそれぞれ炉体の底面及び天井面を覆う底面パネル及び天井パネルである。 Of face panel 12A-12F, 12A and 12B is a front panel and a rear panel covers the front and the back respectively of the respective furnace body 11, 12C and 12D are left side panel for covering the right and left sides of the respective furnace body, 12E and 12F, respectively a bottom panel and a ceiling panel covering the bottom surface and the ceiling surface of the furnace body. 本実施形態では、被加熱物である板状のワークを搬入する側を加熱装置本体10の正面とし、加熱済みのワークを搬出する側を加熱装置本体の背面としている。 In the present embodiment, the back surface of the heating side which carries the a is plate-shaped work was the front of the heating apparatus body 10, heating device main body side for unloading the cooked workpiece.

加熱装置本体10内にワークWを搬入するため、加熱装置本体の正面側に、複数(図示の例では7個)の搬入口13aないし13g(図3参照)が上方から下方に並べて形成され、これらの搬入口をそれぞれ開閉するシャッター14aないし14gが正面パネル12Aに取り付けられている。 For carrying the workpiece W to the heating apparatus body 10, the front side of the heating device main body, a plurality free entrance 13a of (seven in the illustrated example) to 13 g (see FIG. 3) are formed side by side from the top downwards, it is no shutter 14a to open and close these inlet port respectively 14g is attached to the front panel 12A. また加熱室本体内から加熱処理が完了したワークWを搬出するため、加熱装置本体10の背面側に、搬入口13aないし13gにそれぞれ対応する搬出口15aないし15gが上方から下方に並べて形成され、これらの搬出口をそれぞれ開閉するシャッター16aないし16gが背面パネル12Bに取り付けられている。 Also for conveying the workpiece W to heat treatment has been completed from the heating chamber body, on the back side of the heating apparatus body 10, carry-out port 15a to 15g correspond to the entrance 13a to 13g are formed side by side from the top downwards, it is no shutter 16a to open and close these discharge ports, respectively 16g is attached to the rear panel 12B. 搬入口13aないし13g及び搬出口15aないし15gは、断面の輪郭が長方形状を呈する横長の形状に形成され、対応する搬入口及び搬出口は同じ高さ位置に設けられている。 Entrance 13a to 13g and carry-out port 15a to 15g are formed in a horizontally long shape cross-sectional profile exhibits a rectangular shape, corresponding entrance and unloading opening is provided in the same height position.

加熱装置本体10の炉体11内には、搬入口13a〜13g及び搬出口15a〜15gにそれぞれ対応する複数(図示の例では7個)の加熱室17aないし17gが上下方向に多段に並べた状態で形成されている。 In the furnace body 11 of the heating apparatus body 10, the heating chamber 17a to 17g of the plurality (seven in the illustrated example) corresponding respectively to the entrance 13a~13g and carry-out port 15a~15g is arranged in multiple stages in the vertical direction It is formed in the state. 炉体11内にはまた、加熱室17aないし17gのそれぞれの内部を上下から均等に加熱する複数の電気ヒータが配置されている。 Also the furnace body 11, to no heating chamber 17a is a plurality of electrical heaters evenly heat the respective internal 17g from the top and bottom are arranged.

図示の例では、炉体11の内側に形成された直方体状の空間の最上部及び最下部にそれぞれ最上部の加熱室17a及び最下部の加熱室17gをそれぞれ上方及び下方から加熱するヒータ18及び19がそれぞれの熱放射面を水平方向に沿わせた状態で配置され、ヒータ18と19との間の空間を7つの加熱室17aないし17gに仕切るように、6個のヒータ20がそれぞれの熱放射面を水平方向に沿わせた状態で配置されている。 In the illustrated example, the heater 18 and heated from the top and upper and lower, respectively heating chamber 17g of the heating chamber 17a and the bottom of the top, respectively the bottom of the inside formed cuboid-shaped space of the furnace body 11 19 are arranged in a state in which the respective heat radiating surface along a horizontal direction, to seven without heating chamber 17a and the space between the heater 18 and 19 to partition the 17g, the six heaters 20 are respectively heat They are arranged in a state in which along the emitting surface in a horizontal direction. ヒータ18、19及び20は、平面状の熱放射面を表裏両面に有して、表裏両面から熱線を放射する電気ヒータからなっている。 Heaters 18, 19 and 20, has a planar heat radiating surface on both sides, it is made of an electric heater for radiating heat rays from both sides.

本実施形態で用いるヒータ18,19及び20は、全体がパネル状を呈するように構成されて遠赤外線を放射する電気ヒータである。 Heaters 18, 19 and 20 used in this embodiment is an electric heater that radiates far-infrared rays is configured so that the entire exhibits a panel-like. これらのヒータとしては、発熱導体を収容する溝が形成された多数の碍子を並べて、これらの碍子の溝内に遠赤外線を放射する発熱導体(抵抗体)を通すことにより、多数の碍子をフレキシブルな板状を呈するように編み上げた構造を有するラジアント型のパッドヒータや、発熱エレメント(発熱抵抗体)の放射面に遠赤外線放射物質をコーティングした面状のパネル型ヒータを用いることができる。 These heaters are arranged a number of insulators groove for accommodating the heating conductor is formed by passing a heating conductor which radiates far infrared into the groove of the insulator (resistor), a flexible multiple insulator and radiant-type pad heater having a braided structure to exhibit a plate-like shape, the far-infrared emitting material on the radiation surface of the heat generating element (heat generating resistor) can be used coated surface of the panel-type heaters. 各ヒータとしてフレキシブルな板状を呈するパッドヒータを用いる場合には、該ヒータを、炉体11に対して固定された、セラミック等の耐熱性絶縁物からなる支持管の上に載せた状態でフラットに支持する。 When using a pad heater exhibiting a flexible plate as the heaters, flat the heater, which is fixed relative to the furnace body 11, in a state where placed on a supporting tube made of heat-resistant insulating material such as ceramic to support to. また各ヒータとしてパネルヒータを用いる場合には、該ヒータを適宜の取付具を介して炉体11に固定するか、又はヒータを吊下げ具金具により炉体から吊下げた状態で支持することができる。 In the case of using a panel heater as the heater is possible to support the heater or fixed to the furnace body 11 via a suitable fitting, or by lowering tool bracket hanging the heater in a state of suspended from the furnace body it can.

図2及び図3に示されているように、加熱室17aないし17gのそれぞれの内部には、搬入されたワークWを載せて支持するワーク支持装置25が配置されている。 As shown in FIGS. 2 and 3, to no heating chamber 17a in each inside of 17g, the workpiece support device 25 which supports carrying the carried-in workpiece W are arranged. 各ワーク支持装置25は、均一な断面積を有してワークWの搬入・搬出方向に沿って伸びるように形成されて相互間に間隔を隔てた状態で平行に並べて配置された複数(図示の例では3個)のワーク支持部材26と、各ワーク支持部材26の上部に固定された互いに独立な複数の柱状部材27の集合体からなるワーク支持具とを備えて、複数のワーク支持部材26の上部にそれぞれ固定された複数の柱状部材27の集合体からなるワーク支持具の上にワークWを載せた状態で支持するように構成されている。 Each workpiece support device 25, a plurality which are arranged in parallel in a state that is formed to extend along the loading and unloading direction spaced therebetween the workpiece W has a uniform cross-sectional area (shown the example includes a workpiece support member 26 of the three), and a work support comprising an aggregate of columnar members 27 mutually independent plurality of fixed to an upper portion of each workpiece support members 26, a plurality of workpiece support members 26 and it is configured to support in a state of placing the workpiece W onto the comprising an aggregate of a plurality of columnar members 27 fixed respectively to the upper work support. ワーク支持部材26及びワーク支持具を構成する柱状部材27は、耐熱性を有する金属、例えば耐熱性を有するステンレス鋼により構成するのが好ましい。 Columnar member 27 which constitutes the workpiece support member 26 and the work support is preferably constructed of stainless steel having a metal having heat resistance, such as heat resistance.

本実施形態で用いているワーク支持部材26は、図4(A),(B)に示されているように、横断面の輪郭形状が正方形又は長方形を呈するように形成されて平坦な4つの外面を有する角筒状の金属製パイプ28からなっていて、その一つの平坦な外面28aを上方に向けた状態で加熱装置本体10に対して固定されている。 Work supporting member 26 is used in this embodiment, FIG. 4 (A), (B) as shown in the cross-sectional profile is square or formed to exhibit rectangle four flat of It consists square tubular metal pipe 28 having an outer surface, and is fixed to the heating apparatus body 10 a flat outer surface 28a of the one in a state where upward. 各加熱室内に配置されたワーク支持部材26を構成するパイプ28は、各加熱室の下部に配置されたヒータの上方に、該ヒータとの間に隙間を保持した状態で配置されて、その両端が炉体11に取付け金具29を介して固定されることにより、加熱装置本体10に対して固定されている。 Pipe 28 which constitutes the workpiece support member 26 disposed in each heating chamber, above the heater disposed at the bottom of each heating chamber is disposed in a state of holding the gap between the heater, both ends There by being fixed via a mounting bracket 29 in the furnace body 11, and is fixed to the heating apparatus body 10. ワーク支持部材26を構成するパイプ28の両側壁には、多数の貫通孔h,h,…がパイプ28の長手方向に一定の間隔を隔てて形成されている。 The side walls of the pipe 28 which constitutes the workpiece support member 26, a large number of through-holes h, h, ... are formed at regular intervals in the longitudinal direction of the pipe 28. 複数のワーク支持部材26は、ワークWを載せて各加熱室内に出入りする搬送装置のフォークと干渉することがない位置に配置されている。 A plurality of workpiece support members 26 is disposed is not positioned to interfere with the fork of the transfer device and out put the workpiece W to the heating chamber.

ワーク支持具は、できるだけ小さな接触面積をもってワークWの下面に接触して該ワークを支えるために設けられるもので、ワーク支持部材26の上にワークWを直接載せて支持したとした場合のワーク支持部材26とワークWとの接触面積よりも十分に小さい接触面積をもってワークWの下面に接触するように構成される。 Work support is provided in order to support the workpiece in contact with the lower surface of the workpiece W with the smallest possible contact area, the workpiece support in the case of a supported put the workpiece W on the workpiece supporting member 26 directly It has a sufficiently small contact area than the contact area between the member 26 and the workpiece W is configured to contact the lower surface of the workpiece W.

本実施形態では、ワーク支持具を構成する柱状部材27が、各ワーク支持部材26に対して7個設けられている。 In the present embodiment, the columnar member 27 which constitutes the workpiece support has seven provided for each work supporting member 26. 各ワーク支持部材26に対して設けられた複数の柱状部材27は、ワーク支持部材26の長手方向に間隔を隔てて並べて配置されて、ワーク支持部材26を構成するパイプ28の平坦な上面28aに溶接により固定されている。 A plurality of columnar members 27 provided for each work supporting members 26 are arranged side by side at intervals in the longitudinal direction of the workpiece support member 26, the flat top surface 28a of the pipe 28 which constitutes the workpiece support member 26 It is fixed by welding. ワーク支持具を構成する各柱状部材27は、ワークを支持するために必要な強度を得るのに必要最小限の断面積を有するように形成されている。 Each columnar members 27 that constitute the work support is formed to have a cross-sectional area of ​​the minimum necessary to obtain the strength necessary to support the workpiece. また複数の柱状部材27相互間の間隔は、ワークWを撓ませることなく支持し得るように設定しておく。 The spacing between the plurality of columnar members 27 mutually set so as to be supported without bending the workpiece W. ワーク支持装置25によりワークWを水平に支持することができるようにするため、ワーク支持具を構成するすべての柱状部材27は、等しい高さ寸法を有していて、すべての柱状部材27の先端(上端)が同一の水平面上に配置されている。 To be able to by the workpiece support device 25 for supporting the workpiece W horizontally, all of the columnar member 27 which constitutes the workpiece support device, have equal height, the tip of all the columnar members 27 (upper end) is positioned on the same horizontal plane.

本実施形態ではまた、各ワーク支持部材26毎に熱遮蔽部材30が設けられて、該熱遮蔽部材が各ワーク支持部材に装着されている。 Also in this embodiment, the heat shield member 30 is provided for each work supporting member 26, the heat shield member is attached to each workpiece support member. 各熱遮蔽部材30は、ワーク支持部材26を構成するパイプ28に設けられた貫通孔hを通した耐熱性の糸31によりパイプ28に縛りつけられ、各ワーク支持部材26に固定された柱状部材27は、各ワーク支持部材26の上に配置された熱遮蔽部材30を上下に(厚み方向に)貫通した状態で設けられている。 Each heat shield member 30 is tied to the pipe 28 by the heat resistance of the yarn 31 through the through-holes h provided in the pipe 28 which constitutes the workpiece support member 26, the columnar member is fixed to the work supporting member 26 27 are each a work heat shield member 30 disposed on the support member 26 vertically (in the thickness direction) provided in the through-state.

熱遮蔽部材30は、各ワーク支持部材26からワークW側へ熱が放射するのを抑制し、かつ各ワーク支持部材26の上方で対流(空気の流れ)が生じるのを抑制するために設けられたもので、ワークの加熱温度(本実施形態では800℃ないし950℃)に耐えることができるセラミックウール等の断熱材により形成されている。 Heat shield member 30 is provided to heat from the workpiece support member 26 to the work W side can be inhibited to suppress to radiation and convection above each workpiece support member 26 (air flow) occurs as hereinbefore, the heating temperature of the workpiece is formed by a heat insulating material such as ceramic wool can withstand (in this embodiment not 800 ° C. to 950 ° C.).

各熱遮蔽部材30の幅寸法及び厚み寸法は、各ワーク支持部材26からワークW側へ熱が放射されるのを抑制し、かつ各ワーク支持部材26の上方で対流が生じて各ワーク支持部材26からワークWに熱が運ばれるのを抑制するために必要な大きさに設定される。 Width and thickness dimensions of the respective heat shielding members 30, each workpiece support member 26 heat the work W side is prevented from being emitted from, and upward occurs convection respective workpiece support members of each workpiece support members 26 26 is set to a size required to suppress the heat is transported to the workpiece W from. 各熱遮蔽部材30は、できるだけ大きな厚み寸法を有していること好ましいが、ワーク支持装置25により支持されたワークWがヒータにより加熱されるのを妨げないようにするために、その幅寸法は、各ワーク支持部材26からの熱放射を抑制するために必要最小限の大きさ(例えばワーク支持部材26の幅寸法に等しいか又は該幅寸法よりも僅かに大きい程度)に設定するのが好ましい。 Each heat shield member 30 is preferable to have as large as possible thickness, in order to supported workpiece W by the workpiece support device 25 does not interfere with the being heated by the heater, its width dimension is preferably set to the minimum necessary size in order to suppress heat radiation (for example slightly larger than or equal to said width dimension to the width of the workpiece support member 26) from the workpiece support members 26 . 各熱遮蔽部材30の厚み寸法は、各ワーク支持部材26の上方で対流が生じるのを防ぐことができるように、スペース的に許容される範囲で十分に大きく設定されることが好ましい。 Thickness of the heat shield member 30, as it is possible to prevent a convection occurs in the above each workpiece support member 26 is preferably set sufficiently large to the extent space acceptable. 各熱遮蔽部材30の厚みはできるだけ大きく設定することが好ましいが、ワーク支持具を構成する柱状部材27の高さを超えないように設定する必要がある。 Although it is preferred that the thickness of each heat shield member 30 is set as large as possible, it is necessary to set so as not to exceed the height of the columnar member 27 which constitute the work support. 図示の例では、各熱遮蔽部材30の厚み寸法が、柱状部材27の高さ寸法よりも僅かに小さく設定されていて、ワーク支持具を構成するために各ワーク支持部材26に固定された複数の柱状部材27は、それぞれの先端が熱遮蔽部材30を突き抜けた状態で配置されている。 In the illustrated example, the thickness dimension of the heat shield member 30 is, have been set slightly smaller than the height dimension of the pillar member 27, is fixed to the work supporting members 26 to constitute a work support multiple columnar members 27 are arranged in a state where each tip has been exposed to heat shield member 30.

本実施形態の加熱装置は、熱間プレス加工を行うプレス加工機の直前に配置されて、プレス加工を施す一連の素材鋼板をワークWとして加熱室17a〜17g内で加熱する。 Heating apparatus of the present embodiment performs hot pressing is arranged immediately before the press machine is heated in a heating chamber 17a~17g a series of steel plate subjected to press working as a work W. ワークWを加熱する際には、シャッター14a〜14gを所定の順序で開いて搬入口13a〜13gを開き、搬送装置(図示せず。)のフォークの上に載せて保持したワークWを、開かれた搬入口13a〜13gから加熱室17aないし17g内に搬入して、ワーク支持装置25のワーク支持具(柱状部材27,27,…)の上に載せる。 In heating the workpiece W, open the entrance 13a~13g open the shutter 14a~14g in a predetermined order, the workpiece W held in placed on the fork of the transfer device (not shown.) Open it is no heating chamber 17a from him were entrance 13a~13g and carried into 17g, placed on the workpiece support of the workpiece supporting device 25 (the columnar members 27 and 27, ...). 加熱室内にワークを搬入した後、シャッター14a〜14g及び16aないし16gを閉じた状態を所定時間維持することにより加熱室17aないし17g内に搬入されたワークWを加熱する。 After loading the workpiece into the heating chamber, heating the carried-in workpiece W into the heating chamber 17a to the 17g by maintaining to no shutter 14a~14g and 16a to a closed state 16g predetermined time.

一連の加熱室17a〜17g内へのワークWの搬入は時間をずらして行われるため、一連の加熱室内でのワークWの加熱は一定時間ずつずれたタイミングで完了する。 Since the loading of the workpiece W to a series of heating chamber 17a~17g is performed by shifting the time, the heating of the workpiece W in a series of heating chamber is completed at the timing shifted by a predetermined time. 各加熱室内にワークWを搬入した後、ワークの加熱が完了した加熱室(17a〜17gの何れか)に対して設けられたシャッター(16aないし16gのいずれか)を開いて、開かれた搬出口から搬送装置のフォークを加熱室内に挿入し、加熱が完了したワークWをワーク支持装置25から持ち上げて、該ワークWを加熱室から搬出する。 After loading the workpiece W to the heating chamber, the heating chamber heating the workpiece has been completed (either to no 16a of 16g) shutter provided for (either 17a to 17g) open, open transportable insert the fork of the transport device into the heating chamber from the outlet, the workpiece W heating is completed lifted from the work support device 25 unloads the workpiece W from the heating chamber. 搬出されたワークは次工程の加工機に搬送される。 Unloaded the work is conveyed to the processing machine in the next step.

本実施形態のように、互いに独立した複数の柱状部材27の集合体からなっていて、ワークに十分に小さな接触面積を持って接触するワーク支持具を、ワーク支持部材26の上部に取り付けて、ワーク支持部材26の上にワーク支持具を介してワークを支持する構造にすると、低温のワークWが加熱室内に搬入されてワーク支持装置25の上に載せられた際に、ワーク支持部材26からワークWへの熱伝達を抑制することができる。 As in the present embodiment, consist of a set of a plurality of columnar members 27 mutually independent, the work support in contact with a sufficiently small contact area the workpiece, mounted on top of the workpiece support member 26, When the structure that supports the workpiece through the workpiece support on a workpiece support member 26, when the low temperature of the workpiece W is mounted is conveyed in the heating chamber on a workpiece support device 25, the workpiece support member 26 it is possible to suppress the heat transfer to the workpiece W. また本発明のように、各ワーク支持部材26に熱遮蔽部材30を装着しておくと、ワーク支持部材26からの熱の放射を抑制することができるだけでなく、ワーク支持部材26とワークWとの間で対流が生じるのを抑制して、対流により熱が運ばれるのを抑制することができるため、ワーク支持部材26からワークへの熱の移動を抑制することができ、低温のワークWが加熱室内に搬入された際にワーク支持部材26の上部の温度が低下するのを防ぐことができる。 Also as in the present invention, the previously fitted with a heat shield member 30 in each workpiece support members 26, it is possible not only to suppress the heat radiation from the workpiece support member 26, the workpiece support member 26 and the workpiece W by suppressing the convection from occurring between, it is possible to suppress the heat is transferred by convection, it is possible to suppress the transfer of heat to the work from the work support member 26, the low temperature of the workpiece W temperature at the top of the workpiece support member 26 when it is carried into the heating chamber can be prevented from being lowered.

上記のように、本実施形態では、熱の移動の三原則である伝導、対流,放射のすべてに対して対策を講じて、ワーク支持部材26からワークW側への熱の移動を抑制するようにしたので、各加熱室内に低温のワークWが搬入されたときに、各加熱室内のワーク支持部材の上部の温度が低下するのを防いで、ワーク支持部材に大きな撓みが生じるのを防ぐことができ、加熱室内への低温のワークの反復投入により、ワーク支持部材が塑性変形するのを防ぐことができる。 As described above, in the present embodiment, conduction is three principles of heat transfer, convection, taking steps for all of the radiation, so suppressing the movement from the work support member 26 of heat to the workpiece W side Having to, prevent when cold workpiece W is carried into the heating chamber, thereby preventing the temperature of the top of each heating chamber of the work supporting member is lowered, that the large deflection workpiece support member occurs it can be, by repeated introduction of cold work into the heating chamber, it is possible to prevent the workpiece support member to plastic deformation. 従って、ワーク支持装置の上に支持されたワークWが撓むのを防ぐことができ、加熱室内へのワークの搬入・搬出を行う搬送装置のフォークがワークと干渉したり、搬送装置のフォークとワークとの接触面積が減少してワークの保持が不安定になったりするのを防いで、搬送装置のハンドリング性が低下するのを防ぐことができる。 Therefore, it can prevent the supported workpiece W on the workpiece supporting device is bent, or interfere fork of the transfer device and workpiece to perform loading and unloading of the workpiece to the heating chamber, and the fork of the transfer device prevents the in contact area with the workpiece is reduced in the workpiece holding may become unstable, the handling of the transport device can be prevented from being lowered. また搬送装置のフォークによるワークの保持が不安定になるのを防ぐことができることにより、ワークを搬出する過程でワークの位置が正規の位置からずれるのを防ぐことができるため、次工程でのワークの加工を支障なく行わせることができる。 By being able to prevent the holding of the workpiece by the fork of the transfer device becomes unstable In addition, since the position of the workpiece in the process of unloading the workpiece can be prevented from deviating from the normal position, the work in the next step processing can be performed without any trouble of.

上記の実施形態では、ワーク支持具が、互いに独立した複数の柱状部材27の集合体からなっているが、各ワーク支持具を互いに独立した複数のピン状部材(先細の部材)の集合体により構成することもできる。 In the above embodiment, the workpiece support is, although made of an aggregate of a plurality of columnar members 27 mutually independent, the set of a plurality of pin-like member independent of each work support one another (tapered member) It can also be configured. また柱状部材とピン状部材とを混在させた集合体によりワーク支持具を構成することもできる。 It is also possible to configure the work support an aggregate obtained by mixing a columnar member and a pin-shaped member. なおワーク支持具を構成する部材としてピン状部材を用いる場合、ワークWを損傷させないようにするために、その上端(先端)に丸味をつけておくことが好ましい。 In the case of using a pin-like member as a member constituting the work support, in order not to damage the workpiece W, it is preferable to rounded at its upper end (tip).

上記の実施形態のように、ワーク支持部材26として角筒状のパイプ28を用いて、該パイプの平坦な外面の一つを上方に向けた状態で加熱装置本体に対して固定し、パイプ28の上方に向けられた平坦な外面にワーク支持具を構成する柱状部材27を溶接するようにすると、柱状部材27の取付を容易にすることができる。 As in the above embodiment, a rectangular tube-shaped pipe 28 as a work support member 26, fixed to the heating apparatus body with one flat outer surface of the pipe in a state in which upward, the pipe 28 When so as to weld the pillar members 27 constituting the work support on a flat outer surface that is directed in the upward, it is possible to facilitate the mounting of the columnar member 27. なお角筒状のパイプに限らず、横断面の輪郭がn角形(nは4以上の偶数)を呈する金属製のパイプをワーク支持部材26として用いて、該パイプの平坦な外面の一つを上方に向けた状態で加熱装置本体に対して固定するようにしても同様の効果が得られる。 Note not limited to rectangular tube-shaped pipe, the contour of the cross-section n-gon (n is an even number of 4 or more) by using a metal pipe exhibiting a work supporting member 26, one of the flat outer surface of the pipe similar effects can be obtained so as to fix the heating device main body in a state where upward.

本発明において用いるワーク支持部材26は、横断面の輪郭がn角形を呈する金属製のパイプに限られるものではなく、例えば図5(A),(B)に示したように、横断面が円形を呈するパイプ35をワーク支持部材26として用いることもできる。 Work supporting member 26 used in the present invention is not intended to outline of the cross section is limited to a metal pipe exhibiting n-gon, e.g. FIG. 5 (A), the as shown (B), the cross-section circular it is also possible to use a pipe 35 which exhibits a work supporting member 26.

上記の実施形態では、各ワーク支持部材26に対して設けるワーク支持具を複数の柱状部材又はピン状部材により構成したが、各ワーク支持部材26に対して設けるワーク支持具を単一の部材により構成することもできる。 In the above embodiment, the workpiece support is provided for each work supporting member 26 is constituted by a plurality of columnar members or pin-like member, a single member of work support provided for each work supporting member 26 It can also be configured. 図6(A),(B)は、本実施形態で用いることができるワーク支持装置25の他の構成例を示したもので、この例では、ワーク支持具が、櫛状の形に形成される。 FIG 6 (A), (B) is an illustration of another exemplary configuration of the workpiece support device 25 which can be used in the present embodiment, in this example, the workpiece support is formed in a comb-like shape that. 図示の例では、各ワーク支持具が、各ワーク支持部材の長手方向に伸びていて、ワーク支持部材の上部に接合された底板部40aと、該底板部の幅方向の両端から上方に起立して各ワーク支持部材の長手方向に伸びる一対の起立壁40b、40bとを一体に有する断面コの字形の部材40からなっていて、一対の起立壁40b、40bが、各ワーク支持部材26の長手方向に間隔を隔てて並ぶ多数の櫛歯部40b1,40b1,…を有する櫛状の形に形成されている。 In the illustrated example, the work support is, they extend in the longitudinal direction of the workpiece support member, upright and the bottom plate portion 40a joined to the upper portion of the workpiece support member, upward from both ends in the width direction of the bottom plate portion a pair of upright walls 40b extending in the longitudinal direction of the workpiece support members Te, and 40b consist member 40 of the cross-section U-shaped with integral, a pair of standing walls 40b, 40b is a longitudinal of each workpiece support members 26 many comb tooth 40b1,40b1 arranged at intervals in the direction, and is formed ... comb-like shape having a. ワーク支持部材26は図4に示された例と同様に、多数の貫通孔hが形成された角筒状のパイプ28からなっていて、その一つの平坦な外面28aが上方に向けて配置され、この外面28aにワーク支持具を構成するコの字形部材40の底板部40aが溶接されている。 Work supporting member 26, as in the example shown in FIG. 4, consist number of through holes h are formed rectangular tube shaped pipes 28, flat outer surface 28a of one of which is disposed upward , bottom plate portion 40a of the U-shaped member 40 constituting the work support in the outer surface 28a is welded. この場合も、各ワーク支持部材26の上に、各ワーク支持部材26からワークW側への熱放射を抑制し得る大きさを有する熱遮蔽部材30が配置され、ワーク支持具を構成するコの字形部材40が熱遮蔽部材30を貫通した状態で設けられている。 Again, on each work supporting member 26, heat shield member 30 having a size capable of suppressing the heat radiation from the workpiece support member 26 to the work W side is disposed co constituting the work support shaped member 40 is provided while penetrating the heat shield member 30. 図6には図示してないが、熱遮蔽部材30は、図4に示した実施形態と同様に、ワーク支持部材26を構成するパイプ28に設けた貫通孔hを通した耐熱性の糸により、パイプ28に縛り付けられることによりパイプ28に固定することができる。 Although not shown in FIG. 6, the heat shield member 30, similarly to the embodiment shown in FIG. 4, a heat-resistant yarn through a through hole h formed in the pipe 28 which constitutes the workpiece support member 26 it can be fixed to the pipe 28 by being tied to the pipe 28.

上記のようにワーク支持具を構成すると、櫛状の起立壁40b、40bの櫛歯部40b1の先端がワークWの下面に接することになるため、ワーク支持具とワークWとの接触面積を縮小して、ワーク支持部材26からワークWへの熱伝達を抑制することができる。 If a work support as described above, since the comb-like upright wall 40b, the tip of the comb teeth portions 40b1 and 40b will be in contact with the lower surface of the workpiece W, reducing the contact area between the workpiece support and the workpiece W , it is possible to suppress heat transfer to the workpiece W from the workpiece support member 26. また各ワーク支持部材26の上に断熱材からなる熱遮蔽部材30が配置されて、この熱遮蔽部材30により、各ワーク支持部材26からの熱放射と各ワーク支持部材26の上方での対流の発生とが抑制されているので、ワーク支持部材26の上部の温度が低下するのを防ぐことができ、ワーク支持部材26が熱膨張差により撓むのを防ぐことができる。 Also disposed heat shield member 30 made of heat insulating material on each work supporting member 26, by the heat shield member 30, the convection in the upper thermal radiation and the workpiece support member 26 from the workpiece support members 26 since the generation is suppressed, it is possible to prevent the temperature of the top of the workpiece support member 26 is lowered, the workpiece support member 26 can be prevented from flexing by the thermal expansion difference.

図6に示した例では、一対の起立壁40b,40bが櫛状に形成された断面コの字形の部材40により櫛状のワーク支持具を構成したが、図7に示したように、ワーク支持部材26の長手方向に間隔を隔てて並ぶ多数の歯部40b1′を有する一枚の櫛状の板40′によりワーク支持具を構成して、櫛状の板40′の各歯部40b1′の上端をワークWの下面に接触させるようにしてもよい。 In the example shown in FIG. 6, as a pair of upstanding walls 40b, although 40b constituted the comb-shaped work support by member 40 of shaped cross-section co-formed in a comb shape, as shown in FIG. 7, a work constitute a work support by 'a single comb-shaped plate 40 having a' large number of teeth 40b1 which longitudinally arranged at an interval of the support member 26, a comb-shaped plate 40 'each tooth of 40b1' the upper end of the may be brought into contact with the lower surface of the workpiece W. この場合も、各ワーク支持部材26の上に断熱材からなる熱遮蔽部材30を配置するとともに、櫛状の板40′を熱遮蔽部材30を貫通させた状態で設けて、この熱遮蔽部材30により、各ワーク支持部材26からの熱の放射と、各ワーク支持部材26の上方での対流の発生とを抑制する。 Again, with disposing the heat shielding members 30 made of heat insulating material on each work supporting members 26, provided comb plate 40 'in a state of being through the heat shielding member 30, the heat shield member 30 by suppressing the radiation of heat from the workpiece support member 26, and occurrence of convection in the above each workpiece support member 26.

上記の実施形態では、熱遮蔽部材30をワーク支持部材の上に配置するようにしたが、熱遮蔽部材30は、ワーク支持部材からワークW側への熱放射の抑制と、ワーク支持部材からワーク側への対流の発生の抑制とを図ることができるように設けられていれば良く、熱遮蔽部材30の設け方は上記の実施形態で示したものに限定されない。 In the above embodiment has been to arrange the heat shield member 30 on the workpiece support member, the heat shield member 30, the suppression of the thermal radiation from the workpiece support member to the workpiece W side, the work from the work support member may be provided so as it is possible to achieve the suppression of convection occurs to the side, how provided heat shield member 30 is not limited to that shown in the above embodiment. 例えば、ワーク支持部材26の上面と両側面(幅方向に相対する側面)とを覆うように熱遮蔽部材30を設けるようにしてもよい。 For example, it may be provided heat shield member 30 to cover the top surface and side surfaces of the workpiece support member 26 (the width direction on opposite sides).

上記の実施形態では、加熱室内を加熱するヒータとして遠赤外線ヒータを用いたが、他のヒータを用いる場合にも本発明を適用することができる。 In the above described embodiment, the far-infrared heater as a heater for heating the heating chamber, even when using other heater can be applied to the present invention.

上記の実施形態では、複数の加熱室を多段に有する鋼板焼入用加熱装置に本発明を適用したが、単一の加熱室を有する鋼板焼入用加熱装置にも本発明を適用することができる。 In the above embodiment, a plurality of heating chambers to the present invention in the steel sheet hardening heating device having a multi-stage, but also to apply the present invention to steel hardening heating device having a single heating chamber it can.

上記の説明では、熱間プレス加工を施す高炭素鋼板をワークとして加熱するとしたが、他の鋼板を焼入温度まで加熱する処理を行う加熱装置にも本発明を適用することができるのはもちろんである。 In the above description, and to heat the high carbon steel sheet subjected to hot pressing as a work, it can be applied also to the present invention the heating device for performing the process of heating the other steel sheets to quenching temperature, of course it is.

本発明は、鋼板をワークとして焼入温度まで加熱する鋼板焼入用加熱装置に広く利用することができ、特に熱処理が完了したワークを搬送装置のフォークの上に載せて次工程に搬送する工程を含む各種の機械加工の分野での利用可能性が大である。 The present invention can be widely applied to steel hardening heating device for heating up quenching temperature the steel plate as a work, a step of conveying to the next process especially placed on the fork of the transfer device workpieces heat treatment has been completed availability in the field of various machining including is large.

W ワーク 10 加熱装置本体 11 炉体 12Aないし12F 外装パネル 13a〜13g 搬入口 14a〜14g シャッター 15a〜15g 搬出口 16a〜16g シャッター 17a〜17g 加熱室 18,19,20 ヒータ 25 ワーク支持装置 26 ワーク支持部材 27 ワーク支持具を構成する柱状部材 28 金属製のパイプ h パイプ28に設けられた貫通孔 30 断熱材からなる熱遮蔽部材 31 耐熱性を有する糸 35 断面が円形のパイプ 40 ワーク支持具を構成する断面コの字形の部材 40a 底板部 40b 櫛状の起立壁 40′ 櫛状の板 W workpiece 10 heating apparatus 11 furnace body 12A to 12F outer panel 13a~13g entrance 14a~14g shutter 15a~15g out opening 16a~16g shutter 17a~17g heating chamber 18, 19 and 20 the heater 25 workpiece support device 26 workpiece support configuration yarns 35 cross-section having a heat shield member 31 heat resistance consisting of the through-hole 30 heat insulating material provided on the columnar member 28 made of metal pipes h pipes 28 a circular pipe 40 work support constituting the member 27 work support sectional U-shaped member 40a the bottom plate 40b comb upright wall 40 'comb-shaped plate which

Claims (3)

  1. 鋼板であるワークが搬入・搬出される加熱室を備え、該加熱室内には、搬入されたワークを載せて支持するワーク支持装置と、前記ワーク支持装置により支持されたワークを加熱するヒータとを備えて、前記ワークを前記ヒータにより焼入温度まで加熱する鋼板焼入用加熱装置であって、 A heating chamber which is steel work is carried-out, the heating chamber, a workpiece support device for supporting put the carried-in work, and a heater for heating the supported workpiece by said workpiece supporting device provided with, a steel hardening heating apparatus for heating the workpiece to a quenching temperature by the heater,
    前記ワーク支持装置は、相互間に間隔を隔てて並べた複数のワーク支持部材と、各ワーク支持部材の上に配置されて前記ワークを支持するワーク支持具とを備え、 The workpiece supporting apparatus includes a plurality of workpiece support members arranged at intervals therebetween, and a work support for supporting said workpiece disposed on the respective workpiece support member,
    前記ワーク支持具は、前記ワーク支持部材に前記ワークを直接載せたときの前記ワーク支持部材とワークとの接触面積よりも小さい接触面積をもって前記ワークの下面に接触するものであり、 The workpiece support is adapted to contact with the lower surface of the workpiece with a small contact area than the contact area between the workpiece support member and the workpiece when carrying the workpiece supporting member to said workpiece directly,
    前記各ワーク支持部材及びワーク支持具は金属からなること、 Each workpiece support member and the workpiece support is be made of metal,
    を特徴とする鋼板焼入用加熱装置。 Steel hardening heating apparatus according to claim.
  2. 前記ワーク支持具は、互いに独立した複数のピン状部材又は柱状部材からなっていることを特徴とする請求項1に記載の鋼板焼入用加熱装置。 The workpiece support is steel hardening heating apparatus according to claim 1, characterized in that it comprises a plurality of pin-like member or a columnar member independent of each other.
  3. 各ワーク支持部材に断熱材からなる熱遮蔽部材が装着され、 Heat shield member made of a heat insulating material is attached to the workpiece support member,
    前記熱遮蔽部材により、各ワーク支持部材からワークへの熱放射と、各ワーク支持部材からワークへの対流の発生とを抑制すること、 By the heat shield member, and heat radiation to the workpiece from the workpiece support member, to suppress the occurrence of convection to the work from the workpiece support member,
    を特徴とする請求項1又は請求項2に記載の鋼板焼入用加熱装置。 Steel hardening heating apparatus according to claim 1 or claim 2, characterized in.
JP2012175106A 2012-08-07 2012-08-07 Heating device for hardening steel plate Pending JP2014034689A (en)

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Cited By (9)

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Publication number Priority date Publication date Assignee Title
JP2014077567A (en) * 2012-10-09 2014-05-01 Toa Kogyo Kk Multistage heating furnace system
US9127886B2 (en) 2012-10-09 2015-09-08 Toa Industries Co., Ltd. Multistage furnace system
WO2015186601A1 (en) * 2014-06-06 2015-12-10 日鉄住金テックスエンジ株式会社 Far-infrared multistage heating furnace for hot-pressed steel plate
WO2015186600A1 (en) * 2014-06-06 2015-12-10 日鉄住金テックスエンジ株式会社 Far infrared heating furnace for steel plate for hot pressing
CN105624633A (en) * 2014-10-28 2016-06-01 北京北方微电子基地设备工艺研究中心有限责任公司 Heating cavity and physical vapor deposition equipment
JP5956635B1 (en) * 2015-03-19 2016-07-27 株式会社ワイエイシイデンコー Heating equipment
WO2017065252A1 (en) * 2015-10-15 2017-04-20 豊田鉄工株式会社 Heating device
WO2017065253A1 (en) * 2015-10-15 2017-04-20 豊田鉄工株式会社 Heating device
EP3153595A4 (en) * 2014-06-06 2017-12-06 Nippon Steel & Sumikin Texeng. Co., Ltd. Far infrared radiation multistage heating furnace for steel plates for hot pressing

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9127886B2 (en) 2012-10-09 2015-09-08 Toa Industries Co., Ltd. Multistage furnace system
JP2014077567A (en) * 2012-10-09 2014-05-01 Toa Kogyo Kk Multistage heating furnace system
CN106574313A (en) * 2014-06-06 2017-04-19 日铁住金综合工程株式会社 Far-infrared multistage heating furnace for hot-pressed steel plate
WO2015186601A1 (en) * 2014-06-06 2015-12-10 日鉄住金テックスエンジ株式会社 Far-infrared multistage heating furnace for hot-pressed steel plate
WO2015186600A1 (en) * 2014-06-06 2015-12-10 日鉄住金テックスエンジ株式会社 Far infrared heating furnace for steel plate for hot pressing
EP3153593A4 (en) * 2014-06-06 2017-12-13 Nippon Steel & Sumikin Texeng. Co., Ltd. Far infrared heating furnace for steel plate for hot pressing
JP5927355B2 (en) * 2014-06-06 2016-06-01 日鉄住金テックスエンジ株式会社 Far-infrared heating furnace of steel sheet for hot pressing use
EP3153595A4 (en) * 2014-06-06 2017-12-06 Nippon Steel & Sumikin Texeng. Co., Ltd. Far infrared radiation multistage heating furnace for steel plates for hot pressing
CN106536763A (en) * 2014-06-06 2017-03-22 日铁住金综合工程株式会社 Far infrared heating furnace for steel plate for hot pressing
JP5957613B2 (en) * 2014-06-06 2016-07-27 日鉄住金テックスエンジ株式会社 Far infrared multi-stage type heating furnace of the hot-press steel sheet
EP3153594A4 (en) * 2014-06-06 2018-04-25 Nippon Steel & Sumikin Texeng. Co., Ltd. Far-infrared multistage heating furnace for hot-pressed steel plate
CN105624633A (en) * 2014-10-28 2016-06-01 北京北方微电子基地设备工艺研究中心有限责任公司 Heating cavity and physical vapor deposition equipment
JP5956635B1 (en) * 2015-03-19 2016-07-27 株式会社ワイエイシイデンコー Heating equipment
WO2017065252A1 (en) * 2015-10-15 2017-04-20 豊田鉄工株式会社 Heating device
WO2017065253A1 (en) * 2015-10-15 2017-04-20 豊田鉄工株式会社 Heating device

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