KR102453482B1 - Ingot automatic supply apparatus of die casting facility - Google Patents

Abstract

An ingot input device for die casting casting equipment is provided.
The present invention is equipped with a chain conveyor that circulates a pair of chain members in an endless track manner, and a plurality of circulating bars connected at both ends between the pair of chain members, At least one ingot is inserted and disposed on the circulating bar. An ingot transfer unit equipped with an ingot pocket to transfer the ingot to the melting furnace; A body box in which an arc-shaped support surface and a lower surface recessed in the cover plate covering the open upper inlet of the crucible are circumscribed, and ingots dropped and discharged from the chain conveyor are temporarily stored in an internal space, on both sides of the body box a storage preheating unit provided with a vertical support bar extending vertically from the cover plate to rotatably support the provided hinge pin and preheating while temporarily accommodating the ingot; and an actuator connected to the body box to pivot and move the body box along the arc-shaped support surface so that the opening formed through the arc-shaped support surface and the outlet formed through the body box communicate with each other or the opening and the outlet are crossed with each other. a charging operation unit for supplying the ingot preheated in the body box to the inside of the crucible by dropping; includes

Description

Ingot automatic supply apparatus of die casting facility

The present invention relates to an apparatus for automatically putting an ingot into a melting furnace in a die casting casting facility, and more specifically, preheating the temporarily stored ingot while safely dropping the ingot into the inside of the melting furnace by quantitative amount, and then supplying it by dropping to supply the molten metal. It relates to an automatic ingot input device of a die-casting casting facility capable of preventing a sudden drop in temperature and removing foreign substances remaining in the ingot.

In general, die casting is a casting method suitable for mass production of products with high dimensional accuracy and excellent surface quality, which do not require machining or finishing. It can be divided into high temperature chamber process mainly used for casting of high melting point alloys such as , magnesium and copper.

In such die casting, raw materials (ingots) such as metal or non-metal materials cut to a certain size are melted in a melting furnace at a high temperature of about 680 to 720 ° C.

This die-casting manufacturing method is suitable for mass production because continuous operation and automation are possible, and when productivity is secured, the manufacturing process cost is low, so it has been widely used for a long time as a method suitable for manufacturing small and medium-sized parts.

However, in the conventional die-casting automation system proposed so far, since there is no separate device for automatically putting the ingot into the melting furnace, the reality is that the operator manually puts the ingot into the melting furnace.

In most die-casting foundries, field workers manually put ingots into the furnace using tools such as tongs, or put the ingots into the furnace using a independently developed lever-type feeder. it contains

That is, when an operator uses a tool such as tongs, it is not easy to work due to the weight and volume of the ingot, and the workability according to the input is not good due to the high temperature around the melting furnace.

The internal temperature of the furnace is about 680℃, and the weight of the ingot is about 5 kg. As the on-site work is very poor for the operator to put the ingot with tools such as tongs, the ingot cannot be put deep inside the furnace and the ingot is removed from the upper part of the furnace. In the process of feeding and supplying the molten metal by the drop method, there are frequent safety accidents that cause burns to the operator, as well as serious problems such as breaking the crucible due to the carelessness of the operator when the ingot is dropped. occurred.

In addition, it is absolutely required that the ingot be put in exactly a certain amount periodically in accordance with the amount and temperature of the melting furnace, but it is impossible to put the correct amount of the ingot in accordance with the amount and temperature of the hot water at an appropriate time, and by putting too much or too little , there was a problem of generating defective products due to temperature deviation.

(Patent Document 1) KR10-1764182 B1

In Patent Document 1, a supply unit for vertically lifting and transporting the ingot by a lift from the body frame, and a loading bar for loading the ingot into a rail by contacting one side of the ingot to seat the ingot in the supply unit and transfer it to the rail while switching to the horizontal direction; , A loading cylinder for driving the loading bar in the horizontal direction, a tilting bar installed to clamp the ingot on the rail, and a transfer unit having a tilting cylinder driven to change the direction of the tilting bar; a preheating unit for preheating the ingot transferred from the transfer unit to the rail; and an input unit for clamping the ingot with a gripper in the transfer unit and transferring the ingot in the horizontal/vertical direction to the melting furnace.

However, the automatic ingot inserting device of Patent Document 1 has a complicated structure and process for individually gripping the preheated ingot with a gripper and inputting and supplying it into the melting furnace. , because there is no cleaning process to remove foreign substances remaining in the ingot, there was a problem in that it becomes difficult to control the quality of casting products that require strict quality control.

Therefore, the present invention is to solve the problems as described above, and the purpose is to replace the ingot input process, which mainly relied on manual work at the casting site, with automation, while improving the working environment of the operator and preventing safety accidents, In the process of supplying the ingot, the ingot waiting for input is preheated with the indirect heat of the melting furnace to improve the melting efficiency, while removing the foreign substances remaining in the ingot and putting only the clean ingot into the melting furnace, minimizing the defect rate, and improving the quality of precision casting products It is intended to provide an ingot input device for a die-casting casting facility that can perform strict management.

The technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below. will be able

As a specific means for achieving the above object, a preferred embodiment of the present invention is a device for putting an ingot into the crucible of a melting furnace in a die casting casting facility, a chain conveyor that circulates a pair of chain members in an endless track method. Equipped with a plurality of circulating moving bars connected at both ends between the pair of chain members, and having at least one ingot pocket in which an ingot is inserted and disposed on the circulating moving bar, an ingot transfer unit for transferring the ingot to the melting furnace side; A body box in which an arc-shaped support surface and a lower surface recessed in the cover plate covering the open upper inlet of the crucible are circumscribed, and the ingot dropped and discharged from the chain conveyor is temporarily stored in the internal space, on both sides of the body box a storage preheating unit provided with a vertical support bar extending vertically from the cover plate to rotatably support the provided hinge pin and preheating while temporarily accommodating the ingot; and an actuator connected to the body box to pivot and move the body box along the arc-shaped support surface so that the opening formed through the arc-shaped support surface and the outlet formed through the body box communicate with each other or the opening and the outlet are crossed with each other. a charging operation unit for supplying the ingot preheated in the body box by falling into the inside of the crucible; It provides an ingot input device of the die-casting casting equipment comprising a.

At this time, the ingot pocket is recessed to a depth relatively shorter than the length of the ingot, and has at least one insertion groove having the same cross-sectional shape as the ingot, and may be fixedly installed to be perpendicular to the circulation bar.

At this time, the body box includes a hemisphere having an arc-shaped cross-section that protrudes toward the cover plate on the lower surface, and the hemisphere is formed through an outlet of a certain size so as to selectively communicate with the opening formed through the arc-shaped support surface. The arc-shaped support surface may be slidably circumscribed.

At this time, the body box communicates with an air supply line that forcibly supplies cleaning air to remove foreign substances remaining on the surface of the ingot temporarily stored in the internal space, and includes a box cover that covers the open upper part of the body box And, the box cover may be connected in communication with the vacuum exhaust duct to forcibly suck in the foreign material separated from the ingot by the cleaning air and discharge it to the outside.

At this time, the actuator may be provided as a cylinder member in which one end of the body is rotatably connected to the upper end of a vertical stand extending perpendicularly to the outer edge of the cover plate, and one side of the body box and the end of the rod are rotatably assembled. have.

According to the preferred embodiment of the present invention as described above, there are the following effects.

Using the ingot pocket that is circulated by the chain conveyor, the heavy ingot is safely transferred to the furnace side to the inside of the body box for temporary storage. By automating the transfer process for input, it is possible to improve the working environment of workers and prevent safety accidents, while charging the preheated ingot into the furnace to prevent the temperature drop of the molten metal when inserting the ingot, thereby improving the melting efficiency. can

In the process of preheating by temporarily storing in the main body box, foreign substances remaining on the surface of the ingot are removed by blown by the forced air supply. It is possible to melt the ingot by charging it into the melting furnace to minimize the component defect rate of casting products due to the mixing of impurities and to improve the quality of precision casting products that require strict quality control.

1A and 1B are diagrams illustrating a state in which an ingot is transferred to a body box in an ingot input device of a die casting casting facility according to an embodiment of the present invention.
Figures 2a and 2b is a configuration diagram showing a state of dropping the ingot into the crucible of the melting furnace in the ingot input device of the die-casting casting facility according to an embodiment of the present invention.
3 is a block diagram illustrating an ingot transfer unit applied to an ingot input device of a die casting casting facility according to an embodiment of the present invention.
4 is a configuration diagram illustrating a storage preheating unit and an operating unit applied to an ingot input device of a die casting casting facility according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment in which a person of ordinary skill in the art to which the present invention pertains can easily practice the present invention will be described in detail. However, in the detailed description of the structural principle of the preferred embodiment of the present invention, if it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

In addition, the same reference numerals are used throughout the drawings for parts having similar functions and functions.

In addition, throughout the specification, when it is said that a part is 'connected' with another part, it is not only 'directly connected' but also 'indirectly connected' with another element interposed therebetween. include In addition, 'including' a certain component does not exclude other components unless otherwise stated, but means that other components may be further included.

As shown in Figs. 1a, 1b and 2a, 2b, the ingot inserting device 100 of the die-casting casting equipment according to a preferred embodiment of the present invention temporarily stores the ingot 1, which is a heavy object having a substantially rectangular parallelepiped shape. The ingot transfer unit 10, storage preheating unit 20 and It may include a charging operation unit 30 .

As shown in FIG. 3 , the ingot transfer unit 10 includes a chain conveyor 10a that circulates a pair of chain members 11 in an endless track manner, and between the pair of chain members 11 . It includes a plurality of circulating moving bars 12, both ends of which are connected at regular intervals.

When the chain conveyor (10a) is operated, the circulation moving bar (12) circulated in one direction together with the chain member (11) has at least one ingot pocket into which a portion of the body of the ingot (1), which is the input object, is inserted correspondingly in the middle of the length. (13) is included.

The pair of chain members 11a are wound and connected between a pair of driving sprockets 14a and a pair of driven sprockets 14b arranged to have a height difference, and rotation connecting the pair of driving sprockets 14a At one end of the drive shaft, a drive motor 14 for generating rotational drive force when power is applied is connected.

Between the pair of driving sprockets 14a and the pair of driven sprockets 14b, a pair of upper and lower parts for direction change can be smoothly converted to a steep inclination of a chain member due to a height difference caused by different installation positions. It is preferable to provide a sprocket 14c.

At this time, the pair of driving sprockets directly or indirectly connected to the driving motor 14 are illustrated and described as being disposed close to the ground relatively lower than the driven sprocket corresponding to the upper end of the melting furnace, but the present invention is not limited thereto. The driving sprocket and the driven sprocket of the may be disposed opposite to each other.

The circulation moving bar 12 is made of a metal bar of a certain length connected to both ends of the chain member, and the ingot pocket 13 is provided replaceably by a fastening member on one side of the circulation moving bar, and a rectangular parallelepiped. The end of the ingot (1) of the upper phase is inserted correspondingly to individually accommodate the ingot and circulately transferred together with the chain member.

This ingot pocket 13 is recessed to a depth that is relatively shorter than the length of the ingot 1 and has at least one insertion groove having the same cross-sectional shape as the ingot and is fixedly installed to be perpendicular to the circulation moving bar 12. One end of the body of the ingot may be inserted into the insertion groove so as to be in contact with the bottom surface of the insertion groove, and the rest of the body may be externally exposed from the insertion groove.

Accordingly, by the rotational driving force of the driving motor, the chain member wound between the driving sprocket and the driven sprocket and the ingot pocket provided therewith are circulated in one direction at a low speed.

In this state, when the operator located near the driving sprocket, which is the entrance of the chain conveyor, inserts the ingot, which is the transfer object, into the passage ingot pocket through the open insertion groove of the ingot pocket, the ingot is placed in the ingot pocket orthogonal to the circulation moving bar. In the vertically inserted state, it is transported at low speed to the driven sprocket, which is the exit side of the chain conveyor, together with the chain member.

And, the ingot pocket passing through the driven sprocket, which is the exit side of the chain conveyor, is inverted 180 degrees and moved to the driving sprocket side, and the ingot inserted and disposed in the ingot pocket is dropped and separated by its own weight. The removed ingot pocket is moved to the drive sprocket side to reload the ingot.

As shown in FIGS. 1B, 2B and 4, the storage preheating unit 20 is located directly above the cover plate 5 that covers the open top inlet of the crucible 3, which is the inside of the yaw furnace. It may include a body box 21 having an internal space of a certain size so that the ingot falling from the driven sprocket, which is the exit side of the conveyor 10a, is accommodated inside.

The lower surface of the body box 21 is slidably in contact with the arc-shaped support surface 6 recessed in the central region of the cover plate 5 in an approximately arc-shaped cross-section, and is provided on both sides of the main body box 21 A pair of hinge pins 25 to be rotatably supported on each upper end of a pair of vertical support bars 24 extending at a predetermined height from the cover plate 5 .

The body box 21 includes a hemispherical body 22 having an arc-shaped cross-section protruding toward the cover plate on the lower surface, and the hemispherical body 22 is an opening 6a penetrating through the arc-shaped support surface 6 . A discharge port (22a) of a predetermined size is formed through to selectively communicate with the arc-shaped support surface can be slidably circumscribed.

And, it is preferable to provide a drop guide chute 23 on one side of the body box 21 for guiding the ingot 1 falling from the exit side of the chain conveyor 10a to the inner space of the body box.

Accordingly, when the main body box is converted from a horizontal state to an inclined state, the free end of the drop guide chute is converted to an inclined state to correspond to the exit side of the chain conveyor, and penetrates through the hemisphere, which is the lower surface of the main body box. The formed outlet is positioned to correspond to the arc-shaped support surface formed on the cover plate, and the opening of the arc-shaped support surface is positioned to correspond to the outer surface of the hemisphere, and the outlet is switched to a closed state.

In this state, the ingot falling from the exit side of the chain conveyor is temporarily stored in the inner space of the main box converted to the inclined state while passing through the drop guide chute, and the ingot temporarily stored in the inner space of the main box is the melting furnace. It is indirectly heated by the heat transferred from the crucible until it is charged into the crucible of

The body box 21 communicates with an air supply line 26 that forcibly supplies cleaning air to remove foreign substances remaining on the surface of the ingot temporarily stored in the internal space, and It includes a box cover 27 covering the upper part, and the box cover 27 is in communication with the vacuum exhaust duct 28 to forcibly suck in the foreign material separated from the ingot by the cleaning air and discharge it to the outside. desirable.

In this case, since foreign substances are removed and only a clean ingot can be charged into the crucible to dissolve the ingot, it is possible to minimize the defect rate of casting products due to the mixing of impurities and improve the quality of precision casting products that require strict quality control. can be promoted

The charging operation unit 30 may include at least one actuator 31 connected to the body box 21 as shown in FIGS. 1B, 2B and 4 .

The body box 21 is pivotally moved along the arc-shaped support surface 6 of the cover plate 5 with the hinge pin 25 as the center of rotation by the external force provided by the actuator 31 . By converting from the horizontal state to the inclined state or returning from the inclined state to the horizontal state, the opening 6a formed through the arc-shaped support surface 6 and the outlet 22a formed through the hemisphere 22 of the body box are in communication with each other to allow the charging of the ingot, or the opening (6a) and the outlet (22a) are crossed with each other and closed in contact with the counterpart to stop the drop supply of the ingot.

The actuator 31 has one end of the body rotatably connected to the upper end of the vertical bar extending perpendicularly to the outer edge of the cover plate, and one side of the body box and the end of the rod are rotatably assembled as a cylinder member to be provided. can

Accordingly, when the actuator is operated forward, the body box having a hinge pin that is rotatably supported on the upper end of the vertical support bar is rotated at a certain angle in the counterclockwise direction around the hinge pin in the horizontal state to an inclined state. is converted

When the body box is converted to an inclined state inclined at a certain angle, the outlet hole formed through the hemisphere of the body box is closed corresponding to the arc-shaped support surface of the cover plate, and at the same time, the opening of the arc-shaped support surface is the outside of the hemisphere It is closed in correspondence with the face.

As the free end of the drop guide chute provided in the main box is switched to a inclined state to correspond to the exit side of the chain conveyor, the ingot falling from the exit side of the chain conveyor is guided by a preset number to fall and the body box Temporarily stored in the internal space of

And, when it is confirmed that at least one or more ingots are temporarily stored in the inner space of the body box according to the preset ingot input supply amount, the circulation driving of the chain conveyor is temporarily stopped.

In this state, if the inclined state of the main box in which the outlet and the opening are closed is maintained for a certain period of time, the heat of the melting furnace is indirectly transferred to the inner space of the main box, and the temporarily stored ingot is heated to preheat it to a high temperature. do.

On the other hand, when the actuator is operated to return to the reverse, the body box is converted to a horizontal state while returning to the front clockwise around the hinge pin in the drawing from the inclined state.

When the body box is converted to a horizontal state, the outlet of the hemisphere coincides with the opening of the arc-shaped support surface and communicates with the inside of the crucible. It is supplied to the inside of the crucible through the drop and is dissolved in the crucible.

And, the cover plate 5 to cover and block the open upper inlet of the crucible 3 is rotatably connected via a rotation pin 5a provided on one side of the upper end of the melting furnace.

Accordingly, in the process of casting the cast product by injecting the molten metal into the mold, the cover plate is rotated to one side to open the upper entrance of the crucible, and then the molten metal produced in the crucible is drawn out and injected into the mold.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications and changes are possible within the scope without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of

1: Ingot
2: melting furnace
3: Crucible
5: cover plate
10: ingot transfer unit
11: chain member
12: circular movement bar
13: ingot pocket
20: storage preheating unit
21: body box
22: hemisphere
23: Fall guide suit
24: vertical support bar
25: hinge pin
30: charging operation part
31: actuator

Claims (5)

In the device for putting the ingot into the crucible of the melting furnace in the die casting casting facility,
Equipped with a chain conveyor that circulates a pair of chain members in an endless track manner, a plurality of circulating moving bars connected at both ends between the pair of chain members, At least one ingot pocket in which an ingot is inserted into the circulating moving bar Equipped with an ingot transfer unit for transferring the ingot to the furnace side;
A body box in which an arc-shaped support surface and a lower surface recessed in the cover plate covering the open upper inlet of the crucible are circumscribed, and ingots dropped and discharged from the chain conveyor are temporarily stored in an internal space, on both sides of the body box a storage preheating unit provided with a vertical support bar extending vertically from the cover plate to rotatably support the provided hinge pin and preheating while temporarily accommodating the ingot; and
An actuator connected to the body box and penetrating the arc-shaped support surface and an actuator penetrating the main body box along the arc-shaped support surface to communicate with each other or to stagger the opening and the outlet. a charging operation unit for supplying the ingot preheated from the body box by dropping into the inside of the crucible; including,
The body box includes a hemisphere having an arc-shaped cross-section protruding toward the cover plate on the lower surface, and the hemisphere is formed through an outlet of a certain size to selectively communicate with the opening formed through the arc-shaped support surface to form the arc-shaped An ingot input device of a die-casting casting facility, characterized in that it circumscribes the support surface to be slidably movable. In the device for putting the ingot into the crucible of the melting furnace in the die casting casting facility,
Equipped with a chain conveyor that circulates a pair of chain members in an endless track manner, a plurality of circulating moving bars connected at both ends between the pair of chain members, At least one ingot pocket in which an ingot is inserted into the circulating moving bar Equipped with an ingot transfer unit for transferring the ingot to the furnace side;
A body box in which an arc-shaped support surface and a lower surface recessed in the cover plate covering the open upper inlet of the crucible are circumscribed, and ingots dropped and discharged from the chain conveyor are temporarily stored in an internal space, on both sides of the body box a storage preheating unit provided with a vertical support bar extending vertically from the cover plate to rotatably support the provided hinge pin and preheating while temporarily accommodating the ingot; and
An actuator connected to the body box and penetrating the arc-shaped support surface and an actuator penetrating the main body box along the arc-shaped support surface to communicate with each other or to stagger the opening and the outlet. a charging operation unit for supplying the ingot preheated from the body box by dropping into the inside of the crucible; including,
The actuator has a body end rotatably connected to an upper end of a vertical bar extending perpendicularly to the outer rim of the cover plate, and is provided with a cylinder member in which one side of the body box and the rod end are rotatably assembled. Ingot injection device of die-casting casting equipment. 3. The method of claim 1 or 2,
The ingot pocket is recessed to a depth that is relatively shorter than the length of the ingot and has at least one insertion groove having the same cross-sectional shape as the ingot and is fixedly installed to be perpendicular to the circulation bar. Device. 3. The method of claim 1 or 2,
The body box communicates with an air supply line that forcibly supplies cleaning air to remove foreign substances remaining on the surface of the ingot temporarily stored in the internal space, and includes a box cover that covers the open upper part of the body box,
The box cover is an ingot input device of a die casting casting equipment, characterized in that the communication with the vacuum exhaust duct so that the foreign material separated from the ingot by the cleaning air is forcibly sucked and discharged to the outside. delete

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