阅读说明：本技术 浇注装置 (Pouring device ) 是由 西田理 于 2021-04-01 设计创作，主要内容包括：本发明提供一种向排列的铸型浇注金属熔液的浇注装置,其具备：第一台车；使第一台车沿着铸型的排列方向移动的横行驱动部；配置于第一台车上的第二台车；使第二台车沿着与排列方向正交的方向亦即前后方向移动的前后驱动部；设置于第二台车上的框架；被框架支承,具有出铁口,存积从熔解炉接收的金属熔液,保持存积的金属熔液的温度的保持炉；沿排列方向延伸,被框架支承,设置于保持炉的出铁口的倾动轴；使保持炉以倾动轴为中心倾动的倾动驱动部；以及沿前后方向延伸,以位于保持炉的出铁口的前方的方式设置于框架,从保持炉接收金属熔液,向铸型的浇口引导金属熔液的流槽部件。(The present invention provides a pouring device for pouring molten metal to aligned casting molds, which comprises: a first trolley; a horizontal driving part which makes the first trolley move along the arrangement direction of the casting mould; a second carriage disposed on the first carriage; a front-rear driving unit for moving the second carriage in a front-rear direction which is a direction orthogonal to the arrangement direction; a frame provided on the second carriage; a holding furnace supported by the frame, having a tap hole, for storing the molten metal received from the melting furnace and for holding the temperature of the stored molten metal; a tilting shaft extending in the arrangement direction, supported by the frame, and provided at the taphole of the holding furnace; a tilting drive part for tilting the holding furnace around the tilting shaft; and a runner member extending in the front-rear direction, provided to the frame so as to be positioned in front of the taphole of the holding furnace, for receiving the molten metal from the holding furnace and guiding the molten metal to the sprue of the mold.)

1. A pouring device for pouring molten metal into aligned molds, comprising:

a first trolley;

a horizontal driving section for moving the first carriage in the direction of arrangement of the molds;

a second carriage disposed on the first carriage;

a front-rear driving unit that moves the second carriage in a front-rear direction that is a direction orthogonal to the arrangement direction;

a frame provided on the second carriage;

a holding furnace supported by the frame, having a tap hole, for storing the molten metal received from the melting furnace and holding the temperature of the stored molten metal;

a tilting shaft extending in the arrangement direction, supported by the frame, and provided at the taphole of the holding furnace;

a tilting drive unit for tilting the holding furnace about the tilting shaft; and

and a runner member that extends in the front-rear direction, is provided to the frame so as to be positioned in front of a taphole of the holding furnace, receives the molten metal from the holding furnace, and guides the molten metal to the sprue of the mold.

2. The pouring device according to claim 1, comprising:

a radiation thermometer for measuring the temperature of the molten metal in the launder member that receives the molten metal from the holding furnace.

3. The casting device according to claim 1 or 2, comprising:

and a charging device for charging the alloy material into the runner member.

Technical Field

The invention relates to a pouring device.

Background

Patent document 1 discloses a pouring device equipped with a melting furnace. The casting device comprises: the tilting mechanism includes a first driving unit for tilting the melting furnace about a first tilting shaft provided near the taphole, and a second driving unit for tilting the melting furnace about a second tilting shaft provided near the center of gravity of the melting furnace. The pouring device performs the vertical alignment of the melting furnace by tilting the melting furnace about the second tilting shaft. The pouring device pours the melt furnace by tilting the melt furnace around the first rotation axis.

Patent document 1: japanese patent No. 5640020

In the pouring device described in patent document 1, the position of the melting furnace in the vertical direction is changed by operating the second driving unit. This can prevent the tilting melting furnace from contacting the mold. However, since it is necessary to provide two driving units for the melting furnace, the operation cost may be increased. The invention provides a pouring device capable of reducing application cost.

Disclosure of Invention

The casting apparatus according to an aspect of the present invention casts a molten metal onto aligned molds. The pouring device is provided with a first trolley, a transverse driving part, a second trolley, a front-back driving part, a frame, a holding furnace, a tilting shaft, a tilting driving part and a launder component. The transverse driving part moves the first trolley along the arrangement direction of the casting molds. The second trolley is configured on the first trolley. The front-rear driving unit moves the second carriage in a front-rear direction, which is a direction orthogonal to the arrangement direction. The frame is arranged on the second trolley. And a holding furnace which is supported by the frame, has a tap hole, stores the molten metal received from the melting furnace, and holds the temperature of the stored molten metal. And a tilting shaft extending in the arrangement direction, supported by the frame, and provided at the taphole of the holding furnace. The tilting drive unit tilts the holding furnace about the tilting shaft. And a runner member which extends in the front-rear direction, is provided to the frame so as to be positioned in front of the taphole of the holding furnace, receives the molten metal from the holding furnace, and guides the molten metal to the sprue of the mold.

In this casting apparatus, the first carriage is moved by the traverse driving section along the arrangement direction of the molds. The second carriage is moved in the front-rear direction on the first carriage by the front-rear driving section. The holding furnace is supported by a frame provided on the second carriage. The holding furnace is tilted about a tilting shaft provided at the tap hole. Thereby, the molten metal in the holding furnace is supplied to the launder member located in front of the taphole of the holding furnace. The molten metal in the runner member is guided to the gate of the mold. In this way, the pouring device is provided with the forward and backward driving portion and the runner member, and thus the pouring gate of the runner member can be freely moved in the forward and backward directions. Therefore, the holding furnace does not need to be moved up and down, and the holding furnace in the tilting motion does not contact the mold. Further, since the temperature of the molten metal in the holding furnace is held by the holding furnace, it is possible to avoid a large decrease in the temperature of the molten metal in the launder member from the target temperature. In this way, the casting apparatus does not need to tilt the holding furnace about two axes, and therefore, the operation cost can be reduced as compared with a casting apparatus in which the holding furnace is tilted about two axes.

In one embodiment, the pouring device may further include a radiation thermometer that measures the temperature of the molten metal in the trough member that receives the molten metal from the holding furnace. In this case, the pouring device can change the temperature of the molten metal stored in the holding furnace based on the detection result of the radiation thermometer.

In one embodiment, the pouring device may include a charging device that charges the alloy material into the runner member. In this case, the pouring device can change the composition of the molten metal according to the alloy material to be charged.

According to a first aspect of the present invention, there is provided a casting apparatus capable of reducing the operating cost.

Drawings

Fig. 1 is a plan view showing an example of a gating system according to an embodiment.

Fig. 2 is a front view showing an example of the pouring device according to the embodiment.

Fig. 3 is a side view showing an example of the pouring device according to the embodiment.

Fig. 4 is a side view showing an example of the sector gear.

Fig. 5 is a plan view showing an example of the pouring device according to the embodiment.

Fig. 6 is a side view showing an example of the loading device and the radiation thermometer shown in fig. 2.

Fig. 7 is a configuration diagram of a control device of the pouring device according to the embodiment.

Description of reference numerals

1 … casting device, 2 … melting furnace, 10 … holding furnace, 10a … tapping hole, 11 … first trolley, 12 … horizontal driving part, 14 … second trolley, 15 … front and back driving part, 16 … upper frame (an example of a frame), 20 … tilting driving part, 30 … runner part, 40 … input device, 42 … radiation thermometer, A … tilting shaft, C … gate and MD … casting.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference numerals, and redundant description thereof is omitted.

[ outline of the gating System ]

Fig. 1 is a plan view showing an example of a gating system according to an embodiment. In the figure, the X direction and the Y direction are horizontal directions, and the Z direction is a vertical direction. The X direction, the Y direction, and the Z direction are axial directions orthogonal to each other in an orthogonal coordinate system of a three-dimensional space. The Z direction is also referred to as the up-down direction hereinafter.

The casting system 100 shown in fig. 1 includes a casting device 1, a melting furnace 2, and a mold transfer device 3. In the pouring system 100, the pouring device 1 includes a holding furnace 10, and receives the molten metal from the melting furnace 2. The melting furnace 2 is a furnace for melting a metal or the like to produce a molten metal. The holding furnace 10 is a furnace having a function of holding molten metal, and includes a heating mechanism such as a heater. The casting apparatus 1 travels on a pair of rails R1 extending in the X direction. The pouring device 1 sequentially pours the molten metal received from the melting furnace 2 into the aligned molds MD.

The mold moving device 3 conveys the mold MD along the arrangement direction of the mold MD. The mold moving device 3 includes a frame transfer cylinder length measuring device 3a, and detects mold movement information including the timing, speed, or movement amount of the movement of the mold MD. The detected mold movement information is transmitted to the casting apparatus 1. The pouring device 1 follows the mold MD fed by the mold moving device 3 based on the detection result of the frame transfer cylinder length gauge 3a, and pours the molten metal in the holding furnace 10.

[ Structure of pouring device ]

Fig. 2 is a front view showing an example of the pouring device according to the embodiment. Fig. 3 is a side view showing an example of the pouring device according to the embodiment. Fig. 5 is a plan view showing an example of the pouring device according to the embodiment.

As shown in fig. 2, 3, and 5, the pouring device 1 includes a holding furnace 10. The holding furnace 10 is an example, and has a furnace capacity of 500Kg or less, and stores molten metal of less than 1500 ℃ such as iron castings. This allows the size of the pouring device 1 to be reduced as compared with the case where a melting furnace is provided. The furnace internal volume and the molten metal temperature of the holding furnace 10 are not limited to the above-described cases, and can be set as appropriate.

The casting device 1 includes a first carriage 11 that moves in the transverse direction (X direction: the direction in which the molds MD are arranged). The first carriage 11 is disposed on a pair of rails R1 extending in the lateral direction. The lateral drive unit 12 is coupled to the wheels of the first carriage 11 to transmit the driving force. The horizontal driving unit 12 is a driving device for moving the first carriage 11 in the arrangement direction of the molds MD, and is, for example, an electric motor. The pouring device 1 can be moved in the lateral direction by the driving force of the lateral driving section 12. The wheels of the first carriage 11 are provided with lateral position detectors 13. The lateral position detector 13 detects the movement position of the first carriage 11 in the lateral direction. The horizontal position detector 13 is a rotary encoder as an example.

The second carriage 14 is disposed on the first carriage 11. The second carriage 14 is disposed on a pair of rails R2 provided on the first carriage 11. The pair of rails R2 extend in the front-rear direction (Y direction: direction orthogonal to the arrangement direction of the molds MD). The first carriage 11 is provided with a front-rear drive unit 15. The front-rear driving unit 15 is a driving device that moves the second carriage 14 in the front-rear direction, and is an electric motor or the like as an example. The front-rear drive unit 15 is provided with a rack and pinion 22 (see fig. 5), and the rotational drive force of the front-rear drive unit 15 is converted into a linear drive force and acts on the second carriage 14. The second carriage 14 is movable in the front-rear direction by the driving force of the front-rear driving unit 15. A linear guide 17 is provided at a connecting position between the rack and pinion 22 and the rail R2, and force transmission is performed smoothly.

The second carriage 14 is provided with an upper frame 16 (an example of a frame, see fig. 2). The upper frame 16 constitutes an upper unit together with structural members supported by the upper frame 16. That is, the second carriage 14 is movable in the front-rear direction together with the upper unit. The upper frame 16 is set up on the second carriage 14 via the load sensor 18. The load sensors 18 are disposed at four positions, front, rear, left, and right, below the upper unit, as an example. The load sensor 18 detects the weight of the upper unit.

The tilt frame 19 is supported by the upper frame 16. The tilting frame 19 supports and holds the furnace 10. The holding furnace 10 is fixed to the tilting frame 19. A tilting axis a extending in the lateral direction is provided at a taphole 10a (see fig. 3 and 5) of the holding furnace 10. The tilt axis a is rotatably supported by the upper frame 16.

The tilting frame 19 is provided with a pair of sector gears 21 (see fig. 3). Fig. 4 is a side view showing an example of the sector gear. As shown in fig. 4, the sector gear 21 is a sector gear member, and a gear is provided on the outer periphery thereof. As an example, a pair of sector gears 21 are attached to both side surfaces of the tilt frame 19. The upper frame 16 is provided with a pair of tilt driving units 20. The pair of sector gears 21 are fitted to the corresponding tilt driving units 20, respectively. The tilt driving unit 20 is a driving device for tilting the holding furnace 10 about the tilt axis a, and is, for example, an electric motor. The rotational driving force of the tilt driving unit 20 is transmitted to the tilt frame 19 as a rotational force about the tilt axis a via the sector gear 21. The tilt frame 19 is tiltable around the tilt axis a together with the holding furnace 10 by the driving force of the tilt driving unit 20.

The upper frame 16 is provided with a runner member 30 for guiding the molten metal to a gate C (see fig. 3) of the mold MD. The runner member 30 extends in the front-rear direction and is provided on the upper frame 16 so as to be positioned in front of the taphole 10a of the holding furnace 10. The runner member 30 is a container having an open upper portion, and a pouring gate 30a is provided at the bottom. The gate 30a is opened in the vertical direction. Thus, the runner member 30 can receive and store the molten metal from the holding furnace 10, and supply the molten metal to the gate C of the mold MD from the gate 30a in the vertical direction.

The upper frame 16 is provided with a charging device 40 for charging the alloy material into the runner member 30. The loading device 40 is provided on the upper frame 16 so as to be positioned above the runner member 30. Further, a radiation thermometer 42 for measuring the temperature of the molten metal in the launder member 30 is provided in the upper frame 16.

Fig. 6 is a side view showing an example of the loading device 40 and the radiation thermometer 42 shown in fig. 2. As shown in fig. 6, the charging device 40 includes a charging nozzle 41, an alloy material hopper 43, a charging screw 44, and an inoculation driving unit 45. The alloy material hopper 43 stores predetermined alloy materials. A feed screw 44 is connected to a lower portion of the alloy hopper 43. The charging screw 44 is operated by the seed driving unit 45. The inoculation driving section 45 is an electric motor as an example. The input screw 44 rotates at a rotational speed set according to the amount of cut out of each mold, and conveys the alloy material to the input nozzle 41. The charging nozzle 41 drops the alloy material conveyed by the charging screw 44 toward the runner member 30.

The radiation thermometer 42 is supported by the loading device 40. The radiation thermometer 42 detects the infrared ray intensity at the measurement position. The radiation thermometer 42 is positioned in advance so that the measurement position is the molten metal in the trough member 30.

The casting apparatus 1 includes a control device 50 (see fig. 2) that collectively controls the above-described components. The control device 50 is configured as a PLC (Programmable Logic Controller) as an example. The control device 50 may be configured to include a Central Processing Unit (CPU); a main storage device (an example of a storage medium) such as a RAM (Random Access Memory) and a ROM (Read Only Memory); input devices such as touch panels and keyboards; output devices such as displays; a general computer system such as an auxiliary storage device (an example of a storage medium) such as a hard disk.

Fig. 7 is a configuration diagram of a control device of the pouring device according to the embodiment. As shown in fig. 7, the control device 50 has a controller 51. The controller 51 includes an arithmetic unit 51a, a storage unit 51b, and an I/O unit 51 c. The arithmetic unit 51a operates as a processor and performs arithmetic processing, reading and execution of programs, and the like. The storage unit 51b stores various setting values, various detection values obtained during operation, programs, and the like. The I/O unit 51c realizes analog input/output, digital input/output, a counter, a communication function, and the like.

The control device 50 includes a display 60 and a setter 61 as a user interface. The controller 51 is connected to the indicator 60 and the setter 61. The indicator 60 is a display device as an example, and the setter 61 is a keyboard or the like as an example.

The control device 50 includes a servo driver and an inverter as power interfaces. The controller 51 is connected to the servo driver and the inverter. The servo driver is a circuit for driving the motor, and the inverter is a circuit for controlling the rotation of the motor. For example, the controller 51 is connected to the first tilt driving unit 20a of the pair of tilt driving units 20 via the first servo driver 52. The controller 51 is connected to the second tilt driving unit 20b of the pair of tilt driving units 20 via the second servo driver 53. The controller 51 is connected to the front-rear driving unit 15 via a third servo driver 54. The controller 51 is connected to the horizontal drive unit 12 via a first inverter 55. The controller 51 is connected to the inoculation driving section 45 via a second inverter 56.

The control device 50 includes a thermometer amplifier 57 and a load sensor amplifier 58 as sensor interfaces. The controller 51 is connected to the radiation thermometer 42 via a thermometer amplifier 57. The controller 51 is connected to the load cell 18 via a load cell amplifier 58. The controller 51 is connected to the horizontal position detector 13 and the frame transfer cylinder length gauge 3a as sensors.

The controller 51 acquires information from the connected devices and controls the operation of the pouring apparatus 1. The controller 51 obtains the tilt position (rotation position) of the holding furnace 10 adjusted by the first tilt driving unit 20a and the second tilt driving unit 20b from the first servo driver 52 and the second servo driver 53. The controller 51 obtains the front-rear position of the holding furnace 10 adjusted by the front-rear driving unit 15 from the third servo driver 54. The controller 51 stores the acquired position information in the storage unit 51 b. The controller 51 outputs the designated position or the designated speed from the arithmetic unit 51a to the first servo driver 52, the second servo driver 53, and the third servo driver 54. Thus, the holding furnace 10 moves in the front-rear direction in response to an instruction from the controller 51, and tilts in response to an instruction from the controller 51.

The controller 51 obtains the moving speed of the first carriage 11 adjusted by the traverse driving unit 12 from the first inverter 55. The controller 51 stores the acquired speed information in the storage unit 51 b. The controller 51 outputs the designated speed from the arithmetic unit 51a to the first inverter 55. The controller 51 determines the stop of the first carriage 11 based on the position information of the lateral position detector 13, and instructs the lateral driving unit 12 to stop. The controller 51 updates the current position of the mold MD stored in the storage unit 51b based on the data acquired by the frame transfer cylinder length gauge 3 a. Thus, the first carriage 11 moves in the lateral direction so as to follow the mold MD in accordance with the instruction from the controller 51, and the charging device 40 charges the alloy material in accordance with the instruction from the controller 51.

The controller 51 obtains the rotation speed of the input screw 44 adjusted by the inoculation driving unit 45 from the second inverter 56. The controller 51 stores the acquired speed information in the storage unit 51 b. The controller 51 outputs the designated speed from the arithmetic unit 51a to the second inverter 56. Thereby, the charging device 40 charges the alloy material in accordance with an instruction from the controller 51. The controller 51 instructs the second inverter 56 of the rotation speed corresponding to the cutting amount of each mold MD stored in the storage unit 51b in advance. The second inverter 56 rotates the charging screw 44 via the seed drive unit 45, cuts out the alloy material from the lower portion of the alloy material hopper 43, and charges the alloy material into the launder member 30 from the charging nozzle 41. The controller 51 instructs the seed drive unit 45 to stop the charging based on the charging time or the charging amount of the alloy material.

The controller 51 acquires data acquired by the load cell amplifier 58 via the I/O unit 51c, and the computing unit 51a calculates the weight of the molten metal in the holding furnace 10. Then, the controller 51 updates the current weight of the molten metal stored in the storage portion 51 b.

The controller 51 measures the temperature of the molten metal in the launder member 30 for a predetermined time by the radiation thermometer 42. For example, the controller 51 measures the molten metal during a predetermined time after the predetermined time elapses from the time when the molten metal level is stable and the molten metal is received. Thereby, the controller 51 can obtain an appropriate temperature of the molten metal of the runner member 30. Further, the controller 51 adjusts the set temperature of the holding furnace 10 based on the measurement result of the radiation thermometer 42.

[ operation of pouring device ]

When the weight of the molten metal stored in the storage portion 51b is equal to or less than a predetermined value, the controller 51 outputs an instruction to the horizontal drive portion 12 so as to move to the melting furnace 2. Thereby, the first carriage 11 of the pouring device 1 moves in front of the melting furnace 2, and the holding furnace 10 receives the molten metal.

Next, the controller 51 outputs an instruction to the traverse driving unit 12 based on the current position of the mold MD stored in the storage unit 51 b. Thus, the first carriage 11 moves in the lateral direction so as to follow the mold MD in accordance with an instruction from the controller 51, and positions the gate C of the target mold MD with respect to the lateral position.

Next, the controller 51 outputs an instruction to the front-rear driving unit 15 based on the position information stored in the storage unit 51 b. Thus, the second carriage 14 is moved forward and backward together with the upper frame 16, and positions the gate C of the target mold MD and the gate 30a of the runner member 30 in the forward and backward directions.

Next, the controller 51 outputs an instruction to the tilt driving unit 20 based on the position information stored in the storage unit 51 b. Thereby, the tilting frame 19 tilts about the tilting axis a together with the holding furnace 10. The molten metal is poured from the tap hole 10a of the holding furnace 10 into the runner member 30, and the molten metal is poured from the pouring gate 30a of the runner member 30 into the gate C of the mold MD.

When it is determined that a predetermined amount of molten metal has been poured based on the detection result of the load sensor 18, the controller 51 reverses the tilt driving unit 20 and stops the supply of molten metal through the sector gear 21. The controller 51 repeats the above-described processing in the unit of the mold MD.

[ summary of the embodiments ]

In the casting apparatus 1, the first carriage 11 is moved by the traverse driving section 12 along the arrangement direction of the molds MD. The second carriage 14 is moved in the front-rear direction on the first carriage 11 by the front-rear driving unit 15. The holding furnace 10 is supported by an upper frame 16 provided on the second carriage 14 via a tilt frame 19. The holding furnace 10 is tilted about a tilting axis a provided in the tap hole 10 a. Thereby, the molten metal in the holding furnace 10 is supplied to the launder member 30 located in front of the taphole 10a of the holding furnace 10. The molten metal in the runner member 30 is guided to the gate C of the mold MD. In this way, since the pouring device 1 includes the front-rear driving portion 15 and the runner member 30, the pouring gate 30a of the runner member 30 can be freely moved in the front-rear direction. Therefore, the holding furnace 10 does not need to be moved up and down, and the tilted holding furnace 10 does not contact the mold MD. In this way, since the pouring device 1 does not need to tilt the holding furnace 10 in two axes, power consumption can be suppressed as compared with a pouring device in which the holding furnace is tilted in two axes. Therefore, the casting device 1 can reduce the operation cost. Further, as compared with the case where the furnace is tilted about two axes, the entire apparatus is compact, the number of cables connected to the tilting mechanism is reduced, the cables are easily handled, and the number of failures caused by the cables is reduced. That is, the failure rate of the pouring device 1 is reduced, and the maintainability is improved.

When pouring is performed directly to a gate by tilting a ladle or a furnace, the gate needs to be formed in a large size. Further, since the molten metal in the furnace is horizontal, the molten metal splashes, overflows toward the front, and the like, it is necessary to slow down the pouring flow rate of the molten metal. On the other hand, the pouring device 1 uses the runner member 30, and thus can accurately and quickly pour the molten metal into the gate C of the mold MD, as compared with a pouring device that directly pours the molten metal into the gate by tilting a ladle or a furnace.

Further, it is considered that the use of the runner member 30 lowers the molten metal temperature as compared with the case where the ladle or the furnace is tilted to directly pour the molten metal into the gate. In the pouring device 1, since the temperature of the molten metal in the holding furnace 10 is held by the holding furnace 10, it is possible to avoid a large decrease in the temperature of the molten metal in the runner member 30 from the target temperature.

The pouring device 1 can change the temperature of the molten metal stored in the holding furnace 10 based on the detection result of the radiation thermometer 42. The pouring device 1 includes a charging device 40 for charging an alloy material into the runner member 30, and can change the composition of the molten metal according to the charged alloy material. Thus, the casting apparatus 1 can perform a large variety and a small amount of production.

While the embodiments have been described above, the present invention is not limited to the above embodiments, and various modifications can be made. For example, the runner member 30 may be provided to the upper frame 16 via a load sensor. In this case, since the amount of the molten metal poured into the runner member 30 can be measured, the pouring accuracy can be improved.