JPH087973Y2 - Ingot feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a charging device for charging a substantially columnar ingot into a molten metal bath of a melting furnace, and more particularly to an ingot charging device capable of preheating the ingot before charging. is there.

[Prior Art] Usually, a melting furnace such as a pot for a casting machine has a very high temperature. Therefore, when a new ingot is charged into the melting furnace, a sudden temperature change occurs in the molten metal in the melting furnace due to the ingot, the state of the molten metal becomes non-uniform, and as a result, there is an adverse effect such as quality deterioration on the cast product. There was a fear of being invited.

Therefore, in order to prevent such an adverse effect, it is considered that the ingot is preheated and put into the melting furnace. The applicant of the present invention has already proposed a device capable of preheating (hereinafter referred to as "preheating") the ingot as described above in Japanese Utility Model Publication No. 57-15006.

That is, as shown in FIG. 11 and FIG. 12, this device is a conveyance path capable of conveying a plurality of ingots K arranged side by side in parallel.
70, and an operating cylinder 72 that is operated to press and convey the ingot K supplied from the ingot supply unit 71 to the other side is provided at one end thereof. Then, each ingot K is continuously pressed based on the reciprocating motion of the operating rod 73 of the operating cylinder 72, and the ingot K located at the outer end on the conveying direction side is inclined downward by the drop chute 74 and the hot water bath 75. It is designed to be dropped inside.

Further, when the ingot K is dropped and thrown, the throwing direction of the ingot K is turned to its longitudinal direction by the engaging action of the restriction pin 76 provided on the drop chute 74 and the pair of drop straightening plates 77. . As a result, the area of collision with the molten metal is reduced, and the ingot K can be smoothly charged into the molten metal tank 75 without causing the molten metal to be greatly scattered.

Furthermore, a preheating chamber 78 surrounding the transfer path 70 is formed in this apparatus, and the preheating chamber 78 includes a flue 80 of the melting furnace 79 and a melting furnace.
An inlet 81 for introducing combustion gas 79 and an outlet 83 for discharging the combustion gas to the chimney 82 are formed. Then, after the heat of the combustion gas of the melting furnace 79 is simultaneously and efficiently applied to the respective ingots K which continuously move in parallel on the transport path 70, the ingots K are dropped into the hot water tank 75 and the melt is rapidly melted. I was trying to prevent the temperature change.
Further, by using the combustion gas of the melting furnace 79 to preheat the ingot K, the installation of a special device for preheating the ingot K and the operation cost thereof are reduced to make the structure inexpensive. .

[Problems to be solved by the invention] However, in the conventional device, when the ingot K preheated on the transport path 70 is charged into the hot water tank 75, it is possible to simply adopt the drop chute using the drop chute 74. Therefore, while the ingot K is being continuously supplied, a part of the ingot K adheres to the upper surface of the drop chute 74 due to the sliding contact of the ingot K, which worsens the sliding of the succeeding ingot K and hinders the drop injection. There was a fear of running.

In addition, in order to change the input direction of the ingot K,
Since the restriction pin 76 and the fall straightening plate 77 are simply provided, the slip on the drop chute 74 becomes worse, which makes it more difficult to turn the ingot K in the throwing direction, and thus, the ingot K on the drop chute 74 becomes more difficult. There is a risk that clogging of K will occur and it will be difficult to insert the ingot K.

This invention was made in view of the above-mentioned circumstances, and it is possible to efficiently preheat a columnar ingot by effectively utilizing the heat of the combustion gas discharged from the melting furnace, and to preheat the preheated ingot. It is an object of the present invention to provide an ingot feeding device which can surely convey and feed one by one to the feeding port of the melting furnace and further can minimize the scattering of the molten metal at the time of feeding the ingot.

[Means for Solving the Problems] In order to achieve the above object, in the present invention,
Conveying means for arranging a plurality of ingots in parallel in a strip shape and continuously pressing and conveying in a conveying direction orthogonal to the longitudinal direction of each ingot, and arranged adjacent to the conveying path of each ingot,
An exhaust duct for discharging the combustion gas of the melting furnace that is guided out of the melting furnace to heat the ingot that passes through the conveying path, and among the ingots, is arranged at the outer end on the conveying direction side and is used as a conveying means. And a feeding means for pushing one by one in the feeding direction along the longitudinal direction of the ingot and feeding it into the inlet of the hot water tank.

[Operation] Therefore, each ingot pressed and conveyed by the conveying means in the conveying direction orthogonal to the longitudinal direction of the ingot is heated by the heat radiation from the exhaust duct in the middle of the conveying path. Then, among the heated ingots, the ingots arranged at the outer ends in the carrying direction are pressed and carried one by one by the charging means in the charging direction along the longitudinal direction thereof and are charged into the charging port of the melting furnace. .

[First Embodiment] A first embodiment embodying the present invention will be described below in detail with reference to FIGS. 1 to 5.

As shown in FIG. 1, a melting furnace 1 such as a casting machine pot for die casting has a hot water tank 2 inside, and a hot water tank 2 is provided above it.
A lid 3 for closing the opening of the is attached. A molten metal which is heated and melted at a temperature of, for example, 420 ° C. or higher is stored in the hot water tank 2, and this molten metal is used for casting such as die casting. Then, the molten metal in the hot water tank 2 is appropriately supplied to the next casting step.

A box-shaped cover 4 is provided on the lid 3 so as to project upward, and an ingot input port 4a is provided on one side thereof. The inside of the cover 4 communicates with the inside of the bath 2, and
The columnar ingot K inserted into 4a is loaded into the bath 2 by its own weight. Further, the input port 4a is formed corresponding to the outer shape of the ingot K, and only one ingot K can be inserted along the longitudinal direction thereof. by this,
The splash of the molten metal due to the introduction of the ingot K into the hot water tank 2 is reduced, and the splash of the molten metal to the outside of the melting furnace 1 is prevented. Further, a door 5 for opening and closing the opening 4a is attached to the insertion port 4a so as to be rotatable around a shaft 5a at an upper portion thereof. The insertion port 4a is always closed by the door 5, and when the ingot K is inserted, the cover 4 is closed.
It is pressed inward and rotated open.

Further, a lid level sensor 6 for detecting the level of the molten metal in the molten metal bath 2 is attached to the lid 3. Then, when the molten metal level falls below a predetermined level, the molten metal level sensor 6
Outputs the detection signal.

On the side wall of the melting furnace 1, as shown in FIG. 3, an exhaust duct 7 for discharging combustion gas generated when the molten metal in the molten metal tank 2 is heated and melted is led out to the side. . The exhaust duct 7 extends upward at a position separated from the melting furnace 1 by a predetermined distance.

A support plate 8 for supporting the ingot K in a horizontal state is disposed adjacent to the melting furnace 1 and above the exhaust duct 7.

A box-shaped support case 9 extending in a direction (conveyance direction) X orthogonal to the exhaust duct 7 is disposed on one side of the support board 8, and the ingot K is horizontally placed on the upper side of the support case 9. It is supposed to be supported by. The upper surfaces of the support board 8 and the support case 9 are flush with each other, and the upper surfaces of both 8 and 9 form a transport path for the ingot K, so that the longitudinal directions of the plurality of ingots K are orthogonal to the transport direction X. They are arranged in parallel strips. Further, on the upper side of the support case 9, a pair of long holes 9a extending parallel to the transport direction X are formed.

In the support case 9, a drive shaft 10 and a driven shaft 11 are arranged in parallel at a predetermined interval and are rotatably supported. Further, the driven shaft 11 is provided so that the distance from the drive shaft 10 can be adjusted by a well-known shaft position adjusting mechanism 12 provided on both sides of the driven shaft 11. Further, a first drive motor 13 capable of rotating in the forward and reverse directions is disposed in the support case 9, and the motor 13 and the drive shaft 10 are
And are drivingly connected via an endless chain 14.

A pair of chain gears 15 and 16 are provided on both sides of the drive shaft 10 and the driven shaft 11, respectively, and a pair of endless chains 17 are mounted between the gears 15 and 16 to form a long hole 9a in the support case 9. Extends along. Further, on the upper side of both chains 17, engaging claws 18 penetrating the long holes 9a and projecting upward of the support case 9 are formed.
Is provided so that the ingot K placed on the support case 9 can be engaged.

Then, as shown in FIG. 1, in a state in which both the engaging claws 18 are arranged at the retracted position P at one end of the elongated hole 9a, the first drive motor 13 is driven in the normal direction to drive the drive shaft 10. Is rotated in the forward direction via the chain 14, both chains 17 travel in the transport direction X between the chain gears 15 and 16, and both engaging claws 18 are parallel to the transport direction X along the elongated hole 9a. Be forwarded. At this time, the ingot K supported on the support case 9
By engaging with the engaging claw 18, the ingot K is pressed and conveyed in the conveying direction X.

On the other hand, when the first drive motor 13 is driven in the reverse direction, the drive shaft 10 is rotated in the reverse direction via the chain 14, and both chains 17 travel in the counter-conveying direction X between the chain gears 15 and 16. Then, both engaging claws 18 are returned in parallel along the long hole 9a and returned to the retracted position P.

In addition, in the vicinity of the drive shaft 10 and the driven shaft 11, a first limit switch (hereinafter referred to as “LS”) 19 for detecting forward and backward movements of the engaging claw 18 and a backward movement A second LS20 for motion detection is provided. Then, when the engaging claw 18 starts to move forward from the retreat position P and approaches the other end of the long hole 9a, the claw 18 engages with the first LS19 and a detection signal is output from the same LS19. It Further, when the engaging claw 18 moves back and returns to the retracted position P, the same claw 18 engages with the second LS20 and a detection signal is output from the same LS20.

As described above, the support case 9, the drive shaft 10, the driven shaft 11,
The first drive motor 13, the chains 14, 17, the chain gear 15,
A transport mechanism 21 serving as a transport unit is configured by 16, the engaging claw 18, and the like. As shown in FIG. 2, of the ingots K supported on the support case 9 and the support board 8 and arranged in parallel strips, the ingot K located at the outer end on the side opposite to the transport direction X is the transport mechanism 21. Based on the operation of the engaging claw 18
Each ingot K is integrally pressed and conveyed in the conveying direction X by being engaged with and being pressed. And the support board 8
The ingot K transported upward is preheated by the heat radiation of the combustion gas discharged to the exhaust duct 7. In addition, a heat insulating cover 22 that covers the transportation path of the ingot K is disposed above the support board 8 to prevent heat from being dissipated from the support board 8 and to efficiently preheat the ingot K. It is like this.

On the other hand, as shown in FIG. 2, on the other side of the support board 8, the ingots K are extended one by one in a direction (feeding direction) Y orthogonal to the conveyance direction X and are guided one by one along the longitudinal direction thereof. A charging chute 23 is provided. Side walls 23 extending along the longitudinal direction of the charging chute 23 on both sides.
a is provided, and an opening 23b for receiving the ingot K carried out from the support board 8 on the charging chute 23 is provided in the central portion of the support board 8 side. Further, a long hole 23c extending in the longitudinal direction is formed on the upper surface of the charging chute 23. Then, in order to load the ingot K guided on the charging chute 23 into the molten metal bath 2 of the melting furnace 1, the tip side of the charging chute 23 is arranged corresponding to the charging port 4 a of the melting furnace 1.

As shown in FIGS. 2 and 4, a driving shaft 24 and a driven shaft 25 are arranged in parallel at the lower end and the lower end of the charging chute 23 and are rotatably supported. A second drive motor 26 is disposed below the charging chute 23, and the motor 26 and the drive shaft 24 are drivingly connected to each other via an endless chain 27.

Chain gears 28 and 29 are provided at the centers of the drive shaft 24 and the driven shaft 25.
The endless chain 3 is provided between the two gears 28 and 29.
0 is mounted and extends along the long groove 23c. Further, on the upper side of the chain 30, the insertion chute 23 is penetrated through the long groove 23c.
Is provided with an engaging claw 31 protruding upward from
It can be engaged with the ingot K placed on it.

Then, as shown in FIGS. 2 and 4, the second drive motor 26 is driven in a state where the engaging claw 31 is arranged at the retracted position Q at one end of the long groove 23c, so that the drive shaft 24 is moved to the chain. The chain 30 is rotated through 27 and both chain gears 2
Between 8 and 29, it runs in the direction of entry Y. Therefore, the engaging claw 31 is moved forward along the long groove 23c, and is circulated between the chain gears 28 and 29. At this time, the ingot K placed on the charging chute 23 is engaged with the engaging claw 31 and is pressed and conveyed in the charging direction Y.

Further, a third LS 32 that engages with the engaging claw 31 and outputs a detection signal thereof is disposed on the base end side of the closing chute 23.
The LS 32 is engaged with the engaging claw 31 immediately before the engaging claw 31 is rotated and returned to the retracted position Q.

Further, a part of the side wall 23a facing the opening 23b is provided with a fourth LS 33 which engages with the ingot K carried out from the support board 8 and outputs a detection signal thereof.

As described above, the injection chute 23, the drive shaft 24, the driven shaft 2
5, second drive motor 26, chains 27, 30, churn gear
28, 29, the engaging mechanism 31 and the like as a charging mechanism 34 as a charging means.
Is configured. As shown in FIG. 2, among the plurality of ingots K arranged in parallel strips, the ingots K are located on the outer side in the carrying direction and are carried out from the opening 23b onto the charging chute 23 and discharged from the exhaust duct 7. Based on the operation of the charging mechanism 34, the ingots K preheated by heat radiation are pressed and conveyed one by one to the charging port 4a, and then are charged into the hot water tank 2 from the charging port 4a by its own weight.

Next, the electrical configuration of the ingot loading device will be described. In the ingot loading device of this embodiment, a control panel (not shown) for automatically driving and controlling the first and second drive motors 13 and 26 is provided. Has been. As shown in FIG. 5, a central processing unit (CPU) 40 is arranged on this control panel. The CPU 40 is connected to a program memory 41 consisting of a read only memory (ROM) that stores a control program for driving and controlling the drive motors 13 and 26, and works from a random access memory (RAM). Memory 42 is connected.

Further, the bath surface sensor 6, the first to fourth LSs 19, 20, 32, 33 and a predetermined operation switch 43 are connected to the input side of the CPU 40, respectively. Furthermore, each drive circuit 4 is connected to the output side of the CPU40.
First and second drive motors 13 and 26 are connected via 4,45.

As described above, the CPU 40 performs the control operation based on the control program of the program memory 41, and receives the detection signals from the melt level sensor 6 and the first to fourth LSs 19, 20, 32, 33. In response, the first or second drive motor 13, 26 is drive-controlled.

Next, the operation of the ingot throwing device configured as described above will be described.

Now, using the charging device of this embodiment, an ingot K
In order to put in, the ingots K are first arrayed in parallel strips on the support case 9 and the support board 8. That is, as shown in FIG. 1, in a state where the engaging claws 18 are arranged at the retracted position P, several ingots K are arranged in parallel on the support case 9 and their longitudinal directions are orthogonal to the transport direction X. After arranging as described above, a predetermined operation switch 43 is turned on. Then, the CPU 40 outputs a normal rotation drive signal to the first drive motor 13 to drive the first drive motor 13 in the normal rotation direction. Therefore, the first
The drive motor 13 is driven to rotate in the forward direction, the drive shaft 10 starts to rotate, and as the chain 17 travels, both engaging claws 18 are moved in the transport direction X.
Begins to be moved to. At this time, the engaging claw 18 engages with the ingot K located on the retreat position P side, and each ingot K starts to be pressed and conveyed integrally in the conveying direction X. When the engaging claw 18 starts moving in the transport direction X and reaches the vicinity of the other end side of the elongated hole 9a, a part of the engaging claw 18 engages with the first LS19 and the same LS19.
The CPU 40 outputs a detection signal. Then, the CPU 40 outputs a reverse rotation drive signal to the first drive motor 13 in order to drive the first drive motor 13 in reverse in response to the input of the detection signal. As a result, the first drive motor 13 is driven in the reverse direction, the engaging claw 18 starts to move in the counter-transport direction X, and when a part of the engaging claw 18 is engaged with the second LS20, a detection signal is output from the LS20 to the CPU 40. Done. Then, the CPU 40 outputs a drive stop signal to the drive motor 13 in order to stop the drive of the first drive motor 13 in response to the input of the detection signal. As a result, the drive of the first drive motor 13 is stopped, so that the engaging claw 18 is returned to the retracted position P and arranged.

At this point, each ingot K pressed and transported in the transport direction X by the engaging claw 18 is transported onto the support board 8. Then, when several ingots K are arranged in parallel on the support case 9 and are continuously connected to the respective ingots K on the support board 8, a plurality of ingots K are supported as shown by the two-dot chain line in FIG. The ingots K are arranged in parallel on the case 9 and the support board 8, and the preparation for loading the ingot K is completed.

Also, at this point, the plurality of ingots K supported on the support board 8 are preheated by the heat radiation from the exhaust duct 7.
In this case, a plurality of ingots K can be preheated on the support board 8 at the same time, and heat can be efficiently added to the ingots K from the exhaust duct 7 by the heat insulating cover 22. Sufficient preheating can be performed as the ingot K before being put into the inside.

Then, in this state, when the level of the molten metal in the molten metal bath 2 falls below a predetermined level, a detection signal is output from the molten metal level sensor 6 to the CPU 40, and the CPU 40 rotates in the normal direction to drive the first drive motor 13 in the normal direction. Output drive signal. And the first
The engaging claws 18 are moved forward based on the normal rotation drive of the drive motor 13 and the ingots K are integrally pressed and conveyed in the conveying direction X.

As a result, of the ingots K preheated by the heat radiation from the exhaust duct 7, the ingot K arranged at the outer end on the transport direction X side is discharged from the support plate 8 onto the charging chute 23 through the opening 23b, This ingot K becomes the input ingot K to be put into the next bath 2. This time,
As shown by the solid line in FIG. 4, when the ingot K discharged onto the charging chute 23 engages with the fourth LS 33, a detection signal is output from the LS 33 to the CPU 40. Then, the CPU 40 outputs a drive stop signal in order to stop the drive of the first drive motor 13 in response to this detection signal. As a result, the press conveyance of each ingot K is stopped.

At the same time, the CPU 40 outputs a drive signal for driving the second drive motor 26. As a result, the second drive motor 26 starts driving, the chain 30 starts running, and the engaging claw 31 starts to move forward in the closing direction Y. Therefore, the loading ingot K that has been preheated and placed on the loading chute 23 engages with the engaging claw 31 and is pressed and conveyed in the loading direction Y along the longitudinal direction thereof. Then, as shown by the chain double-dashed line in FIG.
When it is pressed and conveyed to the front end side, the door 5 of the insertion port 4a is pressed inward by the ingot K and is opened and rotated.

Further, when the loading ingot K is pressed and conveyed, the loading ingot K is reliably loaded into the hot water tank 2 by its own weight. Further, the engaging claw 31 moved in the closing direction Y by the chain 30 returns to the retracted position Q as the chain 30 travels around. Then, when the engaging claw 31 engages with the third LS32 immediately before the retracted position Q, the CPU40 moves from the same LS32.
The detection signal is output to. In response to the input of this detection signal, the CPU 40 outputs a drive stop signal to stop the second drive motor 26. As a result, the drive of the second drive motor 26 is stopped, and the engagement claw 31 is stopped moving at the retracted position Q.

At this point, if the level of the molten metal in the bath 2 has not reached a predetermined level, the level sensor 6 outputs a detection signal to the CPU 40. In response to this, the CPU 40 drives the first and second drive motors 13 and 26 in the same manner as the above-mentioned control to operate the engaging claw 18 and the engaging claw 31 respectively to insert the next ingot K into the insertion port. The water is poured into the bath 2 from 4a.

On the other hand, when the level of the molten metal in the molten metal bath 2 reaches a predetermined level, no detection signal is output from the molten metal level sensor 6 to the CPU 40. Therefore, the engaging claws 18 and 31 are in a standby state until the next ingot K is inserted.

In this way, each time the level of the molten metal in the bath 2 drops below a predetermined level, the ingots K preheated on the support board 8 are pressed and conveyed one by one along the longitudinal direction thereof, and the pouring port 4a
Is surely poured into the hot water tank 2. Therefore, the level of the molten metal in the hot water tank 2 can always be kept constant.

Further, when all the ingots K on the support case 9 are conveyed onto the support board 8, the engaging claws 18 are returned to the retracted position P. In this case, the ingot K is further mounted on the support case 9.
It is possible to continuously supply the ingot K by arraying and supplying.

[Second Embodiment] Next, a second embodiment of the present invention will be described with reference to FIGS. In each of the embodiments described below, the same members as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. Only different points will be described.

The feeding device of this embodiment has different features in the conveying means. That is, as shown in FIGS. 6 and 7, the transport mechanism 50 as a transport means is disposed adjacent to the support board 8,
An overhanging portion 8a for receiving the ingot K delivered from the transport mechanism 50 is provided on one side of the support board 8.

In FIG. 7, the transport mechanism 50 includes a base 51, and a support frame 52 that projects upward and is provided on one side of the base 51. In addition, an elevating frame that can be expanded and contracted on the base 51
53 is provided. The support frame 52 side above the lifting frame 53 is slidably connected to an elongated hole 52a provided in the support frame 52 and extending in the vertical direction via an engagement pin 53a. Further, the elevating frame 53 can be moved up and down based on the operation of a predetermined elevating cylinder (not shown).

Further, on the lifting frame 53, a turntable 55 having a rotatable turntable 54 is arranged. A rotary cylinder (not shown) for rotating the rotary table 54 is disposed inside the rotary table 55, and the rotary table 54 is set to reciprocate 90 degrees based on the operation of the cylinder. ing. A plurality of ingots K are stacked on the turntable 54.

On the other hand, on the upper part of the support frame 52, an extrusion cylinder 56 for pressing the ingot K stacked on the rotary table 54 and pushing it out onto the support board 8 is provided. A pushing member 57 extending in a direction orthogonal to the rod 56a is provided at the tip of the operating rod 56a of the pushing cylinder 56 in order to engage and push the side surface of the ingot K.

Therefore, in order to transport the ingot K onto the support board 8 using the transport mechanism 50, first, as shown in FIG. 7, a plurality of ingots K are placed in a state where the elevating frame 53 is arranged at the lower retracted position. Are stacked and arranged in multiple layers. In this case, the ingots K of the respective layers are alternately arranged so as to be orthogonal to each other, and the ingots K of the uppermost layer are arranged so as to be parallel to each other corresponding to the pressing member 57 of the extrusion cylinder 56.

In this state, by operating the pushing cylinder 56, the uppermost ingot K is pressed and conveyed by the pressing member 57 based on the projection of the operating rod 56a and is carried out onto the support board 8. Then, the operation of the pushing cylinder 56 is controlled based on the detection operation of the ingot K by the fourth LS 33 on the charging mechanism 34 side, so that the charging chute is performed.
It is possible to carry one ingot K onto the top of the 23.

When all the uppermost ingots K have been discharged onto the support board 8, the pressing cylinder 56 is operated to contract and restore the operating rod 56a, and the rotary table 54 is moved based on the operation of the rotating cylinder. Rotate 90 degrees. As a result, each ingot K of the next layer is rotated 90 degrees and the operating rod
56a is arranged in parallel with the pressing member 57 on the tip side. Then, when the elevating frame 53 is extended by a predetermined amount based on the operation of the elevating cylinder, each ingot K of the next layer is arranged at a position corresponding to the pressing member 57 together with the rotary table 54.
Then, based on the operation of the pushing cylinder 56, it becomes ready to be carried out on the support board 8. And this layer's ingot K
When all the particles are discharged onto the support board 8, the rotating cylinder is returned to 90 degrees and the elevating frame 53 is further extended by a predetermined amount based on the operation of the elevating cylinder, so that the next layer The respective ingots K are arranged in parallel with the pressing member 57.

In this way, the rotary table 54 is rotated, the elevating frame 53 is extended, and the ingots K of each layer are discharged onto the support board 8, so that the bottom layer finally becomes as shown in FIG. It is possible to discharge each of the ingots K located on the support board 8 and automatically discharge all of the ingots K to the support board 8.

Therefore, in the carrying device 50 of this embodiment, a large amount of ingots K can be automatically discharged onto the support plate 8 by stacking a predetermined amount of ingots K on the rotary table 54 in advance. The burden of replenishing work can be reduced.

[Third Embodiment] Next, a third embodiment of the present invention will be described with reference to FIG.

The charging device of this embodiment has different characteristics in the charging means. That is, as shown in FIG. 9, the throwing mechanism 60 as a throwing means includes a rodless cylinder 61 arranged above the throw chute 23, and the cylinder 61 extends in the longitudinal direction (the throwing direction Y). Reciprocating operating piece 61a
have. In addition, the fifth LS6 that detects the placement of the operating piece 61a on the base end side and the tip end side of the rodless cylinder 61.
2 and a sixth LS63 are arranged.

Further, in this embodiment, an engaging portion 5b protruding upward from the insertion port 4a is provided above the door 5 for opening and closing the insertion port 4a. Further, a seventh LS 64 that can be engaged is provided corresponding to the engaging portion 5b. Then, when the ingot K is loaded from the loading port 4a, the door 5 is opened, so that the engagement portion 5b of the door 5 engages with the seventh LS 64 and a detection signal thereof is output.

In this embodiment, the pre-heated charging chute 23
When the ingot K supported above engages with the fourth LS33, the rodless cylinder 61 is operated, and its operating piece 61a is moved from the retracted position shown by the solid line in FIG. 9 to the two-dot chain line in FIG. It is moved forward to the position shown. As a result, the ingot K is pressed and conveyed to the pouring port 4a, and is surely poured into the molten metal layer 2 from the pouring port 4a by its own weight. At this time, the operating piece 61a is engaged with the sixth LS 63, whereby the forward movement of the operating piece 61a is stopped and returned, and the return position is set back to the retracted position shown by the solid line. Then, the operation piece 61a is engaged with the fifth LS 62, so that the operation of the rodless cylinder 61 is stopped, and the next ingot K is put on standby. Further, when the ingot K is inserted, the door 5 is opened and rotated, and the engaging portion 5b is engaged with the seventh LS64, so that the ingot K insertion completion detection signal is output from the LS64. ing.

As described above, in each of the embodiments, each ingot K can be carried out onto the support board 8 and efficiently preheated by the transfer mechanisms 21 and 50. In addition, among the preheated ingots K, the ingots K located at the outer end on the X-direction in the conveying direction can be pressed and conveyed one by one by the feeding mechanisms 34 and 60 along the longitudinal direction to the feeding port 4a. It can be surely poured into the bath 2. For this reason, it is possible to minimize the scattering of the molten metal when being poured into the hot water tank 2, and unlike the conventional drop chute 74 that uses the drop chute 74, the ingot K can be more reliably generated without causing clogging. In addition, it can be smoothly and smoothly charged from the charging port 4a.

Further, since the ingot K is preheated, the molten metal in the hot water tank 2 does not undergo a rapid temperature change when the ingot K is charged, and the molten metal can be held in a uniform state,
Therefore, it is possible to prevent adverse effects such as deterioration of the quality of the cast product.

Moreover, in order to preheat the ingot K, the heat of the combustion gas discharged from the melting furnace 1 can be efficiently used, so that the installation of a special device for preheating and the operation cost thereof can be reduced to configure the structure. It can be cheap.

Further, in each of the embodiments, a plurality of ingots K can be preheated simultaneously on the support board 8, and the ingots K located at the outer end on the transporting direction X side are sequentially charged into the hot water tank 2. Therefore, it is possible to secure a sufficient preheating time for the other ingots K waiting for the turn-in order. Therefore, even when the time interval of the ingot K is shortened, insufficient preheating occurs. It can be dealt with without causing it.

Furthermore, in each of the embodiments, the ingot K is loaded in the carry-out mechanism 21, 50.
It is not necessary to carry out any manual work for charging the ingot K other than supplying the ingot K. Therefore, it is not necessary to manually insert the ingot K from the input port 4a.

The present invention is not limited to the above-mentioned embodiments, and for example, as shown in FIG. 10, the middle of the exhaust duct 7 is bifurcated into an upper duct 7a and a lower duct 7b, and a support board is provided in the gap. 8 is arranged so as to convey the ingot K, or the conveyance path of the ingot K is arranged in the exhaust duct 7.
A part of the configuration can be appropriately changed and implemented, for example, the configuration can be provided in parallel along the line, without departing from the spirit of the invention.

[Effect of the Invention] As described in detail above, according to the present invention, the heat of the combustion gas discharged from the melting furnace can be effectively used to efficiently preheat the columnar ingot, and the preheating can be performed. The ingots can be pressed and conveyed one by one to the charging port of the melting furnace and can be reliably charged, and the excellent effect that the scattering of the molten metal at the time of charging can be minimized is exhibited.

[Brief description of drawings]

1 to 5 are drawings showing a first embodiment embodying the present invention, and FIG. 1 is a partially cutaway perspective view of a charging device,
2 is a partially cutaway plan view of the dosing device, FIG. 3 is a partially cutaway front view of the dosing device, FIG. 4 is a plan view showing the dosing mechanism, and FIG. 5 is a block circuit diagram showing the electrical configuration of the dosing device. Is. 6 to 8 are drawings showing a second embodiment of the present invention, in which FIG. 6 is a plan view of a charging device, and FIG.
8 and 9 are side views showing the transport mechanism. FIG. 9 is a partially cutaway front view of a closing mechanism showing a third embodiment embodying the present invention. FIG. 10 is a partially cutaway front view of an exhaust duct showing another embodiment embodying the present invention. 11th
FIG. 12 is a partially cutaway front view showing a conventional example, and FIG. 12 is a partially cutaway plan view showing the conventional example. 1 ... Melting furnace, 2 ... Hot water tank, 4a ... Input port, 7 ... Exhaust duct, 8 ... Supporting board, 9 ... Supporting case (8 and 9 compose the transfer route), 21, 50: transport mechanism as transport means, 34, 60 ... loading mechanism as loading means, K ...
Ingot, X ... conveyance direction, Y ... insertion direction.

 ─────────────────────────────────────────────────── ───Continued from the front page (56) References Microfilms (JP, U) of the specifications and drawings attached to the application for Japanese Patent Application No. Sho 49-116601 (No. Sho 52-62434). )

Claims (1)

[Scope of utility model registration request] 1. An ingot feeding device for feeding and feeding an ingot (K) to a feeding port (4a) of a molten metal tank (2) of a melting furnace (1), wherein a plurality of ingots (K) are arranged in parallel strips. Conveying means (21, 50) for continuously pressing and conveying in the conveying direction (X) orthogonal to the longitudinal direction of each ingot (K), and adjacent to the conveying path (8, 9) of each ingot (K). An exhaust duct (for discharging combustion gas of the melting furnace (1), which is provided from the melting furnace (1) for heating the ingot (K) passing through the transfer path (8, 9). 7) and the ingot (K) which is arranged at the outer end on the side of the conveying direction (X) of the ingots (K) and which is conveyed by the conveying means (21, 50) along the longitudinal direction thereof. Press one by one in the feeding direction (Y) and feed it into the inlet (4a) of the hot water tank (2). Ingot dosing device being characterized in that a guide means (34, 60).