WO2010113676A1 - 自動注湯方法 - Google Patents
自動注湯方法 Download PDFInfo
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- WO2010113676A1 WO2010113676A1 PCT/JP2010/054791 JP2010054791W WO2010113676A1 WO 2010113676 A1 WO2010113676 A1 WO 2010113676A1 JP 2010054791 W JP2010054791 W JP 2010054791W WO 2010113676 A1 WO2010113676 A1 WO 2010113676A1
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- pouring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D39/00—Equipment for supplying molten metal in rations
- B22D39/04—Equipment for supplying molten metal in rations having means for controlling the amount of molten metal by weight
Definitions
- the present invention relates to a method for pouring molten metal into a mold in a molding line, and more particularly to an automatic pouring method for automatically pouring molten metal into a mold.
- Patent Document 1 Japanese Patent Laid-Open No. 9-164473 (FIG. 1)
- Patent Document 2 Japanese Patent Laid-Open No. 7-214293 (FIG. 1)
- the stopper type pouring device has a problem that hot water leaks when impurities adhere to the stopper or when the stopper is worn. Moreover, since it is necessary to repair or replace the stopper in addition to repairing the ladle, there is a problem that the time and cost required for maintenance become enormous.
- an automatic pouring apparatus that is not a stopper type, for example, a general tilting type automatic pouring apparatus that tilts a ladle to pour molten metal into a mold can be used. In this case, there is a problem that it is very difficult to perform high-speed pouring in accordance with the high-speed molding of the high-speed molding line.
- the present invention has been made in view of the above problems, and automatic pouring that can perform high-speed pouring corresponding to high-speed molding of a high-speed molding line is possible despite the use of a tilting type automatic pouring apparatus.
- An object is to provide a hot water method. Means for solving the problem
- the present invention stores and holds a molten metal inside and holds the molten metal by being tilted forward, and receives a molten metal supplied from the holding furnace and a plurality of times.
- an automatic pouring method using an automatic pouring device comprising a pouring tub capable of storing a molten metal of a pouring weight and tilting means for tilting the pouring basin forward and backward.
- the method includes a step of pouring the molten metal in the pouring bath into the mold by positively tilting the pouring bath, and a step of stopping pouring into the mold by reversely tilting the pouring bath.
- a step of intermittently conveying the mold group including the mold after the pouring and an automatic pouring method including: From the start of the process of pouring the mold into the mold until the end of the process of intermittently transporting the group of molds, if the weight of the molten metal in the pouring bath does not reach a predetermined weight, the holding furnace is tilted forward. Thus, the molten metal is continuously supplied to the pouring bath.
- the molten metal weight in the said pouring gutter is measured with a predetermined period during the process of pouring in the said casting_mold
- the weight of the molten metal in the pouring bath is measured at a predetermined cycle. Based on the measured molten metal weight, the flow rate of the molten metal supplied from the holding furnace to the pouring bath is calculated.
- FIG. 1 It is a front view which shows the tilting type automatic pouring apparatus used for the automatic pouring method of this invention, and is a figure which shows embodiment which applied this method to the pouring to the casting_mold
- the automatic pouring method of this invention is a front view which shows the state which the tilting type automatic pouring apparatus of FIG. 1 cut the hot water, and stopped the pouring into a casting_mold
- FIG. 1 shows an embodiment in which the automatic pouring method of the present invention is applied to pouring a mold M formed by a vertical frameless molding machine (not shown).
- a pouring pot 1 capable of storing a plurality of times of pouring weight of molten metal is disposed above one outer side (right side in the drawing) of a mold M formed by a vertical frameless molding machine.
- a support arm 2 extending in the horizontal direction is attached to one end of the pouring bowl 1.
- a tilting drive machine (motor in the embodiment of the present invention) 3 for tilting the pouring bowl 1 is attached.
- the inner shape of the pouring bowl 1 is preferably a shape in which the cross-sectional area of the horizontal plane (that is, the pouring surface) is substantially constant even if the tilt angle of the pouring bowl 1 is changed.
- a shape for example, a shape in which the longitudinal section has a sector shape, a rectangle shape, a square shape, or the like can be given.
- a traverse frame 4 is disposed on the other outer side of the mold M, and an elevating frame 5 is attached to the traverse frame 4 so as to be movable up and down.
- the support arm 2 is attached to the upper part of the elevating frame 5 so as to be movable back and forth.
- a weight measuring device (weight measuring means) 6 for measuring the weight of the molten metal in the pouring bowl 1 is attached to the lifting frame 5.
- the weight measuring device 6 can be a load cell, for example.
- the elevating frame 5 is provided with an X-direction drive (motor in this embodiment) 7 for moving the pouring bowl 1 in the front-rear direction (X direction) perpendicular to the traveling direction (Y direction) of the mold M. It has been.
- the pouring bath 1 can be moved in the front-rear direction (X direction) together with the support arm 2 by the X-direction drive 7.
- the elevating frame 5 is attached with a Z-direction drive machine (motor in this embodiment) 8 that elevates and lowers the pouring bowl 1 in the vertical direction (Z direction).
- the pouring bath 1 can be moved up and down in the vertical direction (Z direction) together with the lifting frame 5 and the support arm 2 by the Z direction driving device 8.
- the transverse frame 4 is attached with a Y-direction drive machine (motor in this embodiment) 9 that moves the pouring bowl 1 in the lateral direction (Y direction).
- the pouring bath 1 can be moved in the lateral direction (Y direction), that is, the traveling direction of the mold M and the opposite direction thereof together with the transverse frame 4, the lifting frame 5 and the support arm 2 by the Y-direction drive unit 9.
- a holding furnace 10 for storing the molten metal and supplying the molten metal to the pouring pot 1 is disposed on one outer side of the pouring pot 1, and the holding furnace 10 is tilted to tilt the holding furnace.
- Cylinders (holding furnace tilting means) 11 and 11 are attached.
- the holding furnace 10 can be moved in the front-rear direction (X direction) orthogonal to the traveling direction of the mold M by a holding furnace X-direction drive (not shown), and further by the holding furnace Y-direction drive (not shown).
- the mold M can move in the traveling direction and in the opposite direction.
- the molten metal is supplied from the holding furnace 10 into the horizontal pouring bath 1, and the molten metal having a plurality of pouring weights is stored in the pouring bath 1.
- the tilting cylinders 11 and 11 are extended to cause the holding furnace 10 to tilt forward, and the molten metal in the holding furnace 10 is supplied to the pouring bath 1.
- the weight of the molten metal in the pouring bowl 1 is measured by subtracting the tare weight measured in advance from the weight measured by the weight measuring device 6.
- the tilting cylinders 11 and 11 are contracted to cause the holding furnace 10 to reversely tilt, and supply of the molten metal into the pouring bowl 1 is stopped.
- the mold group of the mold M molded by the vertical frameless molding machine is intermittently conveyed by one pitch (one mold) in the traveling direction (in the direction of arrow Y1 in FIG. 2) by a mold conveying means (not shown). .
- template M which should be poured is conveyed to the pouring station S (refer FIG. 2).
- the center position of the mold M in the mold traveling direction at the pouring station S is not always the same position. Therefore, based on the mold thickness data shifted from the vertical frameless molding machine, the center position of the pouring gate in the casting direction of the casting mold M of the pouring station S is calculated, and The pouring pot 1 is moved by the Y-direction drive 9 so that the center position is the same as the center position of the gate.
- the tilting drive unit 3 forwardly, the pouring tub 1 is tilted forward, and the molten metal in the pouring tub 1 is poured into the mold M of the pouring station S. Then, while pouring into the mold M, the tilting cylinders 11 and 11 are extended to cause the holding furnace 10 to tilt forward, and the molten metal in the holding furnace 10 is supplied to the pouring bath 1 (see FIG. 3). ). At this time, the weight of the molten metal in the pouring bath 1 is measured by the weight measuring device 6 at a predetermined cycle (for example, 0.01 seconds).
- a calculation means as a computer function calculates a flow rate difference of the molten metal flowing out from the pouring bath 1 based on the measured molten metal weight, and the calculated flow rate difference is poured from the holding furnace 10.
- the flow rate of the molten metal actually flowing out from the pouring bath 1 is calculated by adding the flow rates of the molten metal supplied to the molten metal bath 1.
- a computer-readable storage medium (not shown) stores a casting weight (total weight of the molten metal to be poured into the mold M) and a casting pattern (a relationship pattern between elapsed time and the pouring flow rate). Based on the weight and the pouring pattern, the required pouring flow rate for each elapsed time is calculated by the computing means. Then, it is determined at every elapsed time whether the flow rate of the molten metal actually flowing out from the pouring bath 1 matches the required pouring flow rate, and if not, the tilting drive unit 3 is driven to drive the pouring bath 1 By adjusting the tilt angle, the flow rate of the molten metal actually flowing out from the pouring tub 1 is set to the required pouring flow rate.
- the adjustment interval of the molten metal flow rate is, for example, an interval of 0.1 seconds. Determination of the molten metal flow rate and input of a drive command to the tilting drive unit 3 based on the determination can also be executed by a computer.
- FIG. 5 shows an example of the pouring pattern.
- FIG. 5A shows a case where the pouring flow rate is substantially constant with respect to the elapsed time.
- FIG. 5B shows a case where the first half of the elapsed time has a low pouring flow rate and the second half has a high pouring flow rate.
- FIG. 5C shows a case where the first half of the elapsed time has a high pouring flow rate and the second half has a small pouring flow rate.
- a calculation means for determining how much molten metal is poured relative to the casting weight stored in the storage medium during pouring is based on the molten metal weight in the pouring bowl 1 measured during the pouring. Calculated by When the calculated pouring weight reaches a predetermined pouring weight, the pouring tub 1 is reversely tilted by reversely operating the tilting drive unit 3, whereby the pouring water is cut into the mold M. Stop pouring (see FIG. 4).
- a mold group including the mold M after pouring is intermittently conveyed in the direction of the arrow Y1 by one pitch (one mold) by a mold conveying means (not shown).
- a mold conveying means not shown.
- the step of cutting the hot water and stopping pouring into the mold M and the step of intermittently conveying the mold group by one pitch (one mold) in the direction of the arrow Y1
- the molten metal is continuously supplied to the pouring bath 1 by tilting the holding furnace 10 forward.
- the weight of the molten metal in the pouring bath 1 is measured by the weight measuring device 6 at a predetermined cycle (for example, 0.01 seconds).
- the flow rate of the molten metal supplied from the holding furnace 10 to the pouring bath 1 is calculated by the calculation means based on the measured molten metal weight.
- the tilting angle of the holding furnace 10 is adjusted so that the calculated flow rate of the molten metal becomes a flow rate at which the pouring weight for one mold is replenished to the pouring bath 1 without being insufficient every cycle.
- the flow rate of the molten metal supplied from the furnace 10 to the pouring bath 1 is adjusted.
- the holding furnace 10 is reversely tilted by contracting the tilting cylinders 11 and 11, and the holding furnace 10 is returned to a horizontal state. Thereafter, a ladle (not shown) containing molten metal is moved to a position near the holding furnace 10 with a hoist (not shown) arranged above the holding furnace 10, and the ladle is tilted to remove the molten metal in the ladle. Replenish the holding furnace 10.
- the molten metal having a plurality of times of pouring weight can be stored in the pouring bath 1, before the molten metal is replenished into the holding furnace 10, multiple pouring is performed in the pouring bath 1. If a molten metal having a weight of hot water is stored, the molten metal can be poured into the mold M by the pouring bath 1 even when the molten metal is replenished into the holding furnace 10.
- the molten metal capacity in the holding furnace is 2000 kg
- the molten metal capacity in the pouring tank is 150 kg
- the intermittent conveyance of one pitch of the mold group (one mold) is once in 10.5 seconds.
- the casting weight is about 10 kg to 30 kg and the average is 20 kg, it takes about 1 minute from the start to the end of the molten metal supply to the holding furnace 10.
- the pouring bowl 1 can store a plurality of times of pouring weight of the molten metal, and further, from the start of the process of pouring into the mold M to the end of the process of intermittently transporting the mold group. Meanwhile, when the weight of the molten metal in the pouring bowl 1 does not reach a predetermined weight, the molten metal is continuously supplied to the pouring bowl 1 by tilting the holding furnace 10 forward. For this reason, even when intermittent conveyance of the mold group is performed at a comparatively short time interval as in a high-speed molding line, a pouring tub is not generated without waiting for pouring due to a lack of molten metal in the pouring tub 1. 1 is effective in continuously pouring the mold M into the mold M.
- the said predetermined weight can set the upper limit weight in which a molten metal does not overflow from the pouring bowl 1, for example. In this case, when the molten metal weight in the pouring bowl 1 reaches the predetermined weight, the molten metal supply to the pouring bowl 1 is stopped by reversely tilting the holding furnace 10.
- the weight of the molten metal in the pouring tub 1 is measured at a predetermined cycle, and the molten metal flowing out from the pouring tub 1 is measured based on the measured molten metal weight.
- a flow rate difference is calculated, and the flow rate of the molten metal actually flowing out from the pouring bath 1 is calculated by adding the flow rate of the molten metal supplied from the holding furnace 10 to the pouring bath 1 to the calculated flow rate difference.
- the weight of the molten metal in the pouring tub 1 is measured at a predetermined cycle, and based on the measured molten metal weight.
- the flow rate of the molten metal supplied from the holding furnace 10 to the pouring bath 1 is calculated. For this reason, it is a complicated operation in which the pouring furnace 1 is tilted forward and the holding furnace 10 is tilted forward and the molten metal in the holding furnace 10 is supplied to the pouring pot 1 while pouring the pouring pot 1 into the mold M. In addition, there is an effect that it is possible to accurately grasp the flow rate of the molten metal actually flowing out from the pouring bath 1. Further, during the step of stopping pouring into the mold M and the step of intermittently transporting the mold group, the holding furnace 10 is tilted forward to supply the molten metal in the holding furnace 10 to the pouring bath 1. Even in such a case, there is an effect that the flow rate of the molten metal supplied from the holding furnace 10 to the pouring bath 1 can be accurately grasped.
- the X-direction drive machine 7 and the Z-direction drive machine 8 are not operated during the various operations described above, but the method of the present invention is not limited to this, and During the various operations, the pouring bowl 1 may be moved in the direction (X direction) orthogonal to the traveling direction of the mold M (Y1 direction in FIG. 2) by the X direction drive unit 7 and the Z direction.
- the pouring tub 1 may be moved up and down by the direction driver 8. For example, when the pouring tub 1 is tilted forward / reversely, the pouring tub 1 may be simultaneously moved in a direction orthogonal to the traveling direction of the mold M, or the pouring tub 1 may be moved up and down.
- the X-direction drive for holding furnace is not operated during the various operations described above.
- the method of the present invention is not limited to this, and the various types described above.
- the holding furnace 10 may be moved in a direction orthogonal to the traveling direction of the mold M by the X-direction drive for holding furnace.
- the holding furnace 10 is moved in the moving direction of the mold M or in the opposite direction by the holding furnace Y-direction drive.
- the other holding furnace 10 that has been replenished with the molten metal may be arranged on one outer side of the pouring tub 1, that is, behind the pouring tub 1.
- the automatic pouring method of the present invention has been described as an example applied to pouring a mold formed by a vertical frameless molding machine.
- the present invention is not limited to this, and the horizontal pouring method is not limited to this.
- the present invention can also be applied to pouring into a frameless mold formed by a split frame molding machine, a frame mold molded by a horizontal split frame molding machine, and the like.
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Abstract
Description
特許文献2:特開平7-214293号公報(第1図)
課題を解決するための手段
前記鋳型内に注湯する工程の開始から前記鋳型群を前記間欠搬送する工程の終了までの間、前記注湯桶内の溶湯重量が所定重量に達していない場合には前記保持炉を正傾動させることにより溶湯を前記注湯桶に供給し続けることを特徴とする。
なお図5に注湯パターンの例を示す。図5(A)は、経過時間に対して注湯流量がほぼ一定な場合である。図5(B)は、経過時間の前半は注湯流量が少なく、後半は注湯流量が多い場合である。図5(C)は、経過時間の前半は注湯流量が多く、後半は注湯流量が少ない場合である。
Claims (2)
- 内部に溶湯を貯留して保持すると共に正傾動させることにより該溶湯を供給する保持炉と、該保持炉から供給される溶湯を受けると共に複数回分の注湯重量の溶湯を貯留可能な注湯桶と、該注湯桶を正傾動及び逆傾動させる傾動手段と、を具備する自動注湯装置を用いて、前記注湯桶を正傾動させることにより該注湯桶内の溶湯を鋳型内に注湯する工程と、前記注湯桶を逆傾動させることにより前記鋳型内への注湯を停止する工程と、該注湯が終了した鋳型を含む鋳型群を間欠搬送する工程と、を含む自動注湯方法において、
前記鋳型内に注湯する工程の開始から前記鋳型群を前記間欠搬送する工程の終了までの間、前記注湯桶内の溶湯重量が所定重量に達していない場合には前記保持炉を正傾動させることにより溶湯を前記注湯桶に供給し続けることを特徴とする自動注湯方法。 - 前記鋳型内に注湯する工程中に、所定周期で前記注湯桶内の溶湯重量を測定し、該測定された溶湯重量に基づいて前記注湯桶から流出する溶湯の流量差を算出し、該算出された流量差に前記保持炉から前記注湯桶に供給される溶湯の流量を加算して前記注湯桶から実際に流出する溶湯流量を算出すると共に、
前記鋳型内への注湯を停止する工程中及び前記鋳型群を間欠搬送する工程中に、所定周期で前記注湯桶内の溶湯重量を測定し、該測定された溶湯重量に基づいて前記保持炉から前記注湯桶に供給される溶湯の流量を算出することを特徴とする請求項1記載の自動注湯 方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CN2010800157169A CN102387879A (zh) | 2009-04-02 | 2010-03-19 | 自动浇注方法 |
US13/262,478 US8408278B2 (en) | 2009-04-02 | 2010-03-19 | Automatic pouring method |
EP10758450.0A EP2415540B1 (en) | 2009-04-02 | 2010-03-19 | Automatic pouring method |
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JP2009090249A JP4678792B2 (ja) | 2009-04-02 | 2009-04-02 | 自動注湯方法 |
JP2009-090249 | 2009-04-02 |
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US (1) | US8408278B2 (ja) |
EP (1) | EP2415540B1 (ja) |
JP (1) | JP4678792B2 (ja) |
CN (1) | CN102387879A (ja) |
TW (1) | TW201039943A (ja) |
WO (1) | WO2010113676A1 (ja) |
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WO2012026060A1 (en) * | 2010-08-26 | 2012-03-01 | Sintokogio, Ltd. | Pouring equipment and method of pouring using the pouring equipment |
CN103447513A (zh) * | 2013-09-02 | 2013-12-18 | 三明学院 | 一种中频感应电炉自动浇注控制系统 |
CN112756597A (zh) * | 2021-02-07 | 2021-05-07 | 江西铜业集团(贵溪)冶金化工工程有限公司 | 一种全自动定点定量浇铸小车 |
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CN112756597A (zh) * | 2021-02-07 | 2021-05-07 | 江西铜业集团(贵溪)冶金化工工程有限公司 | 一种全自动定点定量浇铸小车 |
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CN102387879A (zh) | 2012-03-21 |
JP2010240675A (ja) | 2010-10-28 |
US8408278B2 (en) | 2013-04-02 |
EP2415540A1 (en) | 2012-02-08 |
TW201039943A (en) | 2010-11-16 |
EP2415540B1 (en) | 2019-05-08 |
EP2415540A4 (en) | 2017-11-01 |
US20120097359A1 (en) | 2012-04-26 |
JP4678792B2 (ja) | 2011-04-27 |
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