KR20040031507A - Device for manufacture of a casting - Google Patents

Abstract

PURPOSE: Provided is a device for manufacturing mold, which enhances the dimensional precision of molds as well as solving the problem of turning the molded material. CONSTITUTION: The device for manufacturing mold comprises: a rotary transferring part which rotates to change the position of mold and the first(1) and the second(2) molding boxes when the mold and the first(1) and the second(2) molding boxes are lifted; a mold sand supplying part which supplies the wet sand to the first(1) and second(2) molding boxes; a turning over part which makes the first(1) and the second(2) mold boxes lifted and turn over so that sands are uniformly filled; a mold removing part which removes the die(3) placed between the first(1) and the second(2) mold boxes so that a mold is formed from the mold boxes filled with sands and from the turning over part; a mold sand removing part placed at the side of the rotary turning part removing the mold sand when the first(1) and the second(2) mold boxes are transferred from a position by the rotary transfer part after the molten metal is introduced into the die made by the mold removing part; and a recycling part of the mold sand which makes the mold sands re-used by transferring the moisturized mold sand to the mold sand supplying part after spraying water uniformly to the removed mold sands.

Description

Device manufacturing apparatus {Device for manufacture of a casting}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a casting manufacturing technology, and more particularly, to a casting manufacturing apparatus that can solve the inconvenience caused by manual production of a casting while proceeding the production flow semi-automatically when a sand casting is made.

In general, casting refers to a metal product of a desired shape by solidifying a molten metal in a mold.

In the case of such castings, it is generally classified into cast iron castings, aluminum alloy castings, copper alloy castings, or the like, or classified according to the type of mold and the inflow method of molten metal.

The material of the mold is a mold made by sculpting molding sand into a metal such as sand mold or steel, and sand is mixed with particles of a synthetic resin that hardens when heated. There are various kinds of shell molds, such as shell molds, which are formed by dropping them on a metal mold heated beforehand to solidify them to form a thin shell-shaped mold, and are divided into sand castings, mold castings, and cell molds.

At this time, in the case of the sand casting, a model made of wood is usually divided into several pieces, and the mold is put into a mold by sanding the sand around the casting sand (鑄 物 砂) to make a mold by removing the model.

There are two types of sand castings: raw sand molds which are used by adding several percent of water to the foundry sand and solidified.

However, in the case of the conventional sand casting, the mold has to be broken out every time, so the mold must be made as many as the number of products. Since all the processes including the manufacture of the mold are made manually, considerable difficulty has been in producing the casting.

That is, the sand casting is divided into an upper mold and a lower mold, and a mold having a specific shape is inserted between the upper and lower molds so that molten metal is inserted therein. Afterwards, the molding sand must also be inserted into the lower mold.

However, in order to insert the molding sand into the lower mold as described above, the upper and lower molds need to be inverted, and in the related art, the work of flipping the mold is not only made by a worker manually, but also the upper and lower molds into which the molding sands are inserted. In the case of the weight is considerable, the flipping work was inconvenient, which takes a considerable number of people.

In addition, conventionally, after inserting the molding sand into the upper and lower molds, respectively, and then chopped, a mold formed between the upper and lower molds is removed to form a mold into which molten metal can be injected. It was necessary to remove the mold first.

At this time, the upper mold is removed by removing the mold by removing the mold, and the upper mold is placed on the lower mold again because all of the work is performed manually by the operator, the upper and lower mold was often inconsistent with each other, As a result, the dimensional accuracy of castings made from molten metal was greatly reduced.

In addition, the casting sand used in the conventional sand casting, but contains a little moisture, this casting sand had a disadvantage that is difficult to reuse when taken out from the mold each time.

That is, when the foundry sand is removed from the mold, most of the foundry sand removed from the mold due to moisture contained in the foundry sand hardens. In the related art, a large number of hardened sand yarns are reused in order to reuse the cast sand. The work of shredding was necessary.

In addition, even if the crushed molding sand as described above, to reuse it must be included a certain proportion of moisture in the foundry sand, if the work containing the moisture is not made constant, the water content in the foundry sand is insufficient or Or if it overflowed, it was difficult to manufacture the death casting.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to make the production process of the sand casting casting to be made semi-automatically, that is, inconvenient according to the manual production of the conventional casting, that is by manual In addition to eliminating the inconvenience of flipping molds, it also improves the dimensional accuracy of castings, and distributes moisture evenly to the casting sands separated from the casting molds. It is to provide a casting manufacturing apparatus.

1 is an overall process diagram of a casting manufacturing apparatus that is semi-automatically carried out in one embodiment of the present invention.

Figure 2 is a schematic cross-sectional view of the apparatus for manufacturing a casting proceeds semi-automatically in one embodiment of the present invention.

Figure 3 is a perspective view of a structure for supplying the molding sand to the mold cast on a rotating disc in one embodiment of the present invention.

Figure 4 is a partial perspective view showing a coupling state of the mold overturning member and the mold removing member in an embodiment of the present invention.

5 is a partially enlarged perspective view of a state in which the mold is engaged with the flipping member in an embodiment of the present invention.

Figure 6 is a flipped state of the mold in one embodiment of the present invention.

Figure 7 is a front schematic view of the mold before the mold to the mold turnover member in an embodiment of the present invention.

8 is a front schematic view of a state in which a mold is engaged with the mold reversing member as an embodiment of the present invention so as to rise upward;

Figure 9 is a front schematic view before operation to remove the mold from the mold mold filled with molding sand in one embodiment of the present invention.

Figure 10 is a front schematic view after the operation to remove the mold from the mold mold filled with molding sand in one embodiment of the present invention.

Figure 11 is a perspective view showing the structure of a member for reusing the removed molding sand after removing the molding sand from the mold in one embodiment of the present invention.

12 is a front schematic view of a state of supplying water to the molding sand removed from the mold to enable reuse of the molding sand in one embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1a; Hanging bracket 1,2; 1st and 2nd mold

10; Rotating disc 10a; Circular Gears

11; Axis of rotation 11a; bearing

11b; Space 12, 13; First and second driven gear

14; Drive gear 15; 1st drive motor

21; Support frames 22,81; 1st and 2nd filter screen

23,82; First and second springs 24; 2nd drive motor

25; Vibration bar 25a; Pulley

31; Transfer frame 31a; Tooth

32,61,71; First, second, and third conveying bodies 33; Bar frame

33a; Support rod 34; Fixed frame

6,35; First and second locking rods 40; 3rd drive motor

50; Transfer rod 60; Mold Frame Separation Part

70; Mold separator 62,72; 1st and 2nd hydraulic cylinder

62a, 72a; First and second working rod 63; Template frame

73; Mold lift plate 91; Conveyor

92; Crushing rod 93; Water spray

93a; Spray nozzle

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is an overall process diagram of a semi-automatic casting production apparatus according to an embodiment of the present invention, Figure 2 is a schematic cross-sectional view of a semi-automatic casting production apparatus according to an embodiment of the present invention, Figure 3 is In one embodiment is a perspective view of the structure for supplying the molding sand to the mold cast on the rotating disc.

Figure 4 is a partial perspective view showing a coupling state of the mold overturning member and the mold removing member in an embodiment of the present invention, Figure 5 is a part of the state in which the mold cast the locking member in an embodiment of the present invention 6 is an enlarged perspective view, and FIG. 6 is an inverted state diagram of a mold according to one embodiment of the present invention.

Figure 7 is a schematic front view of the mold cast member to the mold flipping member in an embodiment of the present invention, Figure 8 is an embodiment of the present invention to raise the mold cast the mold to the mold flipping member up 9 is a front schematic view of a state, and FIG. 9 is a front schematic view before operation of removing a mold from a mold frame filled with molding sand in one embodiment of the present invention.

Figure 10 is a front schematic view after operation to remove the mold from the mold mold filled with molding sand in one embodiment of the present invention, Figure 11 is a molding sand removed after removing the molding sand from the mold in one embodiment of the present invention 12 is a perspective view illustrating a structure of a member for reuse, and FIG. 12 is a front schematic view of a state in which water is supplied to a molding sand removed from a mold to enable reuse of the molding sand in one embodiment of the present invention.

As shown in Figs. 1 to 12, a conventional structure in which the mold 3 is inserted between the first and second mold molds 1 and 2 in which the molding sand is filled to put the molten metal into the casting. To

When the stacked first and second molds 1 and 2 and the mold 3 are raised, the positions of the raised first and second molds 1 and 2 and the mold 3 are changed. A rotating conveying member;

A molding sand supply member which drives to supply the molding sand containing moisture to the first and second molds (1) and (2) mounted on the rotary conveying member;

A flipping member for lifting the first and second molds (1) (2) so that the molding sand is evenly filled with the first and second molds (1) (2);

Positioned between the first and second molds (1) and (2) so that one mold is made from the first and second molds (1) and (2), each of which is filled with molding sand from the flipping member of the flipping member. A mold removing member for removing the mold 3;

Located on the side of the rotary transfer member, the molten metal is injected into the mold made by the mold removing member to complete the molding, and then the first and second molds (1) and (2) are positioned through the rotary transfer member. A molding sand removing member which removes the molding sand from the first and second molds 1 and 2 when being transferred; And,

A foundry sand regeneration member which evenly sprays the foundry sand removed from the foundry sand removing member to include moisture, and then transfers the foundry sand containing the water to the foundry sand supplying member to drive reuse of the foundry sand supplying member; It is characterized by the configuration.

According to another aspect, when the mold 3 is laminated between the first and second molds 1, 2, the first and second molds 1 ( On the side of 2) is formed a bolted portion (4),

A plurality of locking brackets 1a are formed on one surface of the first mold frame 1, and a locking operation of the wire 5 is possible in the center of one surface of the first and second mold frames 1 and 2. The first locking rod 6 was configured to be coupled.

According to yet another aspect, the rotation transfer member,

When the first and second mold molds 1 and 2 and the mold 3 filled with the molding sand are stacked and placed on the bottom surface to move the positions of the mold mold 1 and the mold 3, respectively. A rotating disc 10 having a circular gear portion 10a,

A cylindrical rotary shaft 11 coupled to a central portion of the circular gear portion 10a through a bearing 11a to form a space 11b at a central portion to guide and support rotation of the rotary disk 10;

A drive unit including first and second driven gears 12 and 13, a drive gear 14, and a first drive motor 15 to engage the circular gear part 10a and to rotate the rotating disc 10. It is characterized by the configuration.

According to yet another aspect, the casting sand supply member,

A first filtration network 22 which is supported by the support frame 21 and vibrates so as to supply only the molding sand of fine particles to the first and second molds 1 and 2 mounted on the rotating disc 10;

A first spring 23 installed at each corner of the first filtering net 22 to guide the vibration range of the first filtering net 22;

A second drive motor 24 which drives the first filter net 22 to vibrate;

Has a pulley (25a) is connected to the second drive motor 24, to vibrate the first filter network 22 in accordance with the driving force of the second drive motor (24) being transmitted through the pulley (25a). A rotating vibration bar 25 is included.

According to another aspect, the flip member,

One side of the rotating disk 10 and the space (11b) of the rotating shaft 11, respectively located in a vertical position, there is a wire (5) in the vertical movement is driven by the drive of a motor (not shown) A feed frame 31 having a tooth portion 31a,

When the vertical movement of the wire (5) occurs, the first and second molds (1) (2) and the first to be transported up and down along the teeth 31a of the transfer frame 31 to lift the mold (3) 1 conveying body 32,

A rod frame 33 which is integrally coupled to the lower end of the first conveying member 32 and which combines a plurality of support rods 33a in a horizontal direction;

A fixed frame 34 having a “c” shape firmly fixed to the support rods 33a of the rod frame 33 and positioned on an upper surface of the rotating disc 10 and on which inner components of the mold removing member are seated;

The first locking rod 6 extends in the horizontal direction from the upper end of the fixing frame 34 to allow the first and second molds 1 and 2 and the mold 3 to be lifted and to be flipped in the direction thereof. And a second locking rod 35 for locking the wire 5.

According to yet another aspect, the mold removing member,

A third drive motor 40 positioned and driven on an outer upper surface of the fixing frame 34 included in the flipping member;

A plurality of transfer rods 50 vertically erected in the fixing frame 34 of the flipping member;

When the third drive motor 40 is driven in a vertical direction along the transfer rod 50 while moving the first mold frame having a locking bracket (1a) a plurality of mold frame separation portion ( 60),

A plurality of mold separation parts for lifting the mold 3 mounted on the second mold frame 2 in a horizontal state while being transported in the vertical direction along the transfer rod 50 from the driving of the third drive motor 40. It contains 70.

According to yet another aspect, the mold frame separation unit 60,

A second transfer member 61 coupled to the transfer rod 50 and transferred up and down from the drive of the third drive motor 40;

A first hydraulic cylinder 62 coupled to the second conveying member 61 and having a first reciprocating rod 62a linearly reciprocating;

The mold frame lifting plate which is brought into close contact with the locking bracket 1a of the first mold 1 from the linear reciprocating motion of the first operation rod 62a, enables the lifting of the first mold 1 63).

According to yet another aspect, the mold separator 70

A third conveying member 71 coupled to the lower ends of the plurality of conveying rods 50 and vertically conveyed from the driving of the third driving motor 40;

A second hydraulic cylinder 72 coupled to the third conveying member 71 and having a second reciprocating rod 72a linearly reciprocating;

It includes a mold lifting plate 73 is in close contact with the bottom surface of the mold (3) from the linear reciprocating motion of the second working rod (72a) to enable the lifting of the mold (3).

According to yet another aspect, the foundry sand removing member,

Insert the molten metal so that the first and second molds (1) and (2) made of the casting are lifted and then remove the casting sand from the mold (1) and (2) so that only the fine sand is passed. A second filtering net 81 which is vibrated,

It is provided on each corner of the second filter net 81 includes a second spring 82 for guiding the vibration range of the second filter net (81).

According to another aspect, the foundry sand regeneration member,

A conveying conveyor 91 for supplying the foundry sand of the fine particles that have passed through the second filter net 81 of the foundry sand removing member to the first filtration network 22 included in the foundry sand supply member;

A crushing rod 92 formed at a predetermined interval on the plane of the conveying conveyor 91 so as to crush the foundry sand of the fine particles into smaller particles when the sand of the fine sand is conveyed through the conveying conveyor 91;

Water spraying unit having a spray nozzle (93a) to spray a predetermined amount of water to the molding sand of the fine particles conveyed while being crushed by the crushing rod 92 to adjust the water content of the molding sand fed back to the first filter network 22 ( 93).

As described above, the present invention transfers the first and second molds 1 and 2 and the mold 3 to form a laminated structure by using the rotary disk 10, but at predetermined intervals around the rotary disk 10. In order to achieve the convenience of casting production through semi-automation, by placing the components for the production of the casting is made with a separate drive.

That is, the present invention, as shown in Figure 1, in the "A" part of the molding sand supply and the first and second molds inverted, the first mold is removed to remove the mold, and again on the second mold 1 includes the process of forming a casting mold by placing a mold, and in the "B" part, the process of removing the molding sand from the first and the second molding mold, separating the formed casting, and then reusing the removed casting sand. It is to include.

Referring to Figures 1 to 12 attached to the operation of the embodiment of the present invention configured as described above are as follows.

First, the rotary feed member which rotates from a motor drive is provided in the predetermined place.

That is, the rotary disk 10, which is included in the rotational conveying member and has a circular gear portion 10a, is installed to maintain a predetermined height with the ground around the rotation shaft 11.

At this time, the rotating shaft 11 is a cylindrical shape so as to place a space (11b) on the center, the bearing 11a on the upper surface of the rotating shaft 11 is coupled to the circular gear portion (10a) of the rotating disk (10) When the rotation of the rotary disk 10 is to be carried out more easily.

Thereafter, a first driven gear 12 is connected to the circular gear portion 10a, a second driven gear 13 is disposed on an axis of the first driven gear 12, and the second driven gear 13 is disposed. By connecting the drive gear 14 of the first drive motor 15, the driving force is driven by the drive gear 14-> second driven gear 13-> first when the first drive motor 15 is driven. The driven gear 12 is transferred to the rotating disc 10 through the circular gear portion 10a.

In addition, in each section of the rotating disc 10, that is, as shown in FIG. 1, the supply of molding sand and the first and second molds 1 and 2 are inverted, as well as the first molds ( 1) separation and removal of the mold 3 and removal of the molding sand feed member, the upturning member and the mold so that the process of forming the molding is carried out by bringing the first mold 1 into close contact with the second mold 2. The components of the member are disposed, and the components of the foundry sand removing member and the foundry sand recycling member are disposed in the part “B” of FIG. 1 so that the foundry sand removal, the casting separation, and the reuse of the removed foundry sand proceed.

On the other hand, in the state in which the arrangement of the respective components as described above, the second mold 2 and the mold 3 and the first mold (1) are sequentially stacked on the rotating disc 10, and then 1 The rotary disc 10 is rotated from the driving of the driving motor 15 to position the stacked mold frame 1 and the mold 3 in the portion “A” of FIG. 1.

Subsequently, a first injection molding member which is located in the "A" part, that is, the first injection member which is supported by the support frame 21 and is included in the molding yarn supply member as shown in FIG. The filter net 22 is supplied with casting sand containing a predetermined ratio of water.

At this time, when the molding sand is supplied to the first filtering network 22 and the operator operates a separate key manipulation unit (not shown) to drive the second driving motor 24, the second driving motor 24 and the pulley are operated. The vibrating rod 25 located at the bottom of the first filtering network 22 while being connected through the 25a rotates according to the driving force of the second driving motor 24 which is transmitted through the pulley 25a. The filter net 22 is vibrated.

Here, the first spring (23) formed at each corner of the first filtering net 22 guides the vibration range of the first filtering net (22), so that the first filtering net (22) of the rotary disk 10 The casting sand of the fine particles can be supplied to the first mold 1 laminated thereon.

On the other hand, after the supply of the molding sand to the first mold (1) is completed as described above and the chopped sand, it is necessary to supply the molding sand to the second mold (2), for this purpose the laminated first and As well as the second mold (1) (2), as well as the mold (3) as a whole, the second mold (2) should be raised up.

That is, as shown in Fig. 2, a space 11b is formed in the rotation shaft 11 of the rotation disc 10, and the tooth portion 31a is formed at one side of the space 11a and the rotation disc 10. The transfer frame 31 is erected, the transfer frame 31, the flip member and the mold removal member is located so as to be located on the upper surface of the rotating disc 10,

The flip member lifts the first and second molds 1 and 2 so that the molding sand is evenly filled with the first and second molds 1 and 2.

Looking more specifically at this,

As shown in FIG. 5, after the worker grips the wire 5 with the first locking rods 6 formed on both sides of the first and second molds 1 and 2, the opposite side of the wire 5 is The locking operation is performed by the second locking rod 35 included in the flipping member.

Subsequently, as shown in FIGS. 7 and 8, the first transfer member 32 is transferred to the transfer frame 32 through a wire 5 positioned in the transfer frame 31 by driving a motor (not shown) through a separate key operation. Transfer to the top of (31).

At this time, a plurality of support rods 33a are coupled to the rod frame 33 of the second transfer member 32, and each component of the mold removing member is seated on the inner surface of the support rod 33a. Fixing frame 34 is coupled to the locking rod 35 in the horizontal direction is firmly coupled,

From the upward transfer of the second transfer member 32, not only the fixing frame 34 but also the second locking rod 35 are all transferred upward.

Therefore, when the upward movement of the second locking rod 35 is made, the first and second molds 1 and 2 are formed by a wire 5 connecting the first and second locking rods 35. ) And the mold 3 is moved away from the rotating disk 10 to a predetermined height.

Subsequently, when the operator inverts the first and second molds 1 and 2 in which the position is moved to a predetermined height, that is, when one side of the mold is pushed and rotated downward as shown in FIG. The second mold frame (1) (2) is to be turned over while making the axis of the first locking rod (6) formed on one surface thereof.

Accordingly, in the state where the positions of the first and second molds 1 and 2 are changed as described above, the second mold 2 is filled with molding sand.

After the first and second molds 1 and 2 are turned upside down in the original direction, the first conveying member 32 is moved downward, and the first and second molds (1) (2) and the metal mold | die 3 are positioned above the rotating disc 10. As shown to FIG.

On the other hand, after the filling of the molding sand in the first and second mold frame (1) (2) is completed as described above, each component of the mold removing member located in the fixed frame 34 is driven.

Then, in the mold removing member, it is possible to remove the mold 3 positioned therebetween from the first and second mold molds 1 and 2 filled with molding sand from the flipping member, respectively.

Looking more specifically at this,

The mold removing member includes a third driving motor 40, a transfer rod 50, a mold separating part 60, and a mold separating part 70.

Therefore, the operator drives the third driving motor 40 in a state in which the first and second molds 1 and 2 and the mold 3 are stacked on the plane of the rotating disc 10 so that the transfer rod ( The mold frame separating portion 40 coupled to the upper end portion of 50) is positioned at both sides of the uppermost mold, that is, the first mold 1.

That is, a plurality of the transfer rod 50 is vertically erected in the fixed frame 34, the wire (not shown) in which the movement occurs by the drive of the third drive motor 40 in the transfer rod 50; Bar),

A plurality of mold frame separation unit 60 coupled to the transfer rod 50 is a mold frame of the upper portion stacked on the rotating disc 10, that is, the first mold frame (or the second mold frame (2)) ( 1) will be lifted horizontally.

In other words, the second transfer member 61 included in the mold separating unit 60 is coupled to the upper ends of the plurality of transfer rods 50 and vertically transferred according to the movement of the wire, and the second transfer member 61 The first operating rod 62a of the first hydraulic cylinder 62 coupled to the linear reciprocating motion, and the mold lifting plate 63 is coupled to the first operating rod 62a.

The mold frame lifting plate 63 is formed on both sides of the first mold frame 1 mounted on the rotating disc 10 from the linear motion of the first operating rod 62a as shown in FIGS. 9 and 10. In close contact with the bracket (1a) is to be able to lift the first mold (1).

On the other hand, the third conveying body 71 included in the mold separation unit 70 is coupled to the lower end of the plurality of conveying rods 50 is transferred up and down in accordance with the movement of the wire, coupled to the third conveying body (71) The second actuating rod 72a of the second hydraulic cylinder 72 has a linear reciprocating motion, and a mold lifting plate 73 is coupled to the second actuating rod 72a,

The mold lifting plate 73 is a mold from the linear movement of the second operation rod (72a) in a state in which the first mold (1) is lifted by the mold mold separation unit 60 as shown in FIG. It comes in close contact with both bottom surfaces of (3), and it is possible to lift the mold (3).

At this time, the mold (3) raised by the mold separation unit 70 is pushed in a predetermined direction by the operator to fall on the rotating disc 10, the mold 3 is the first and second mold (1) Can be completely removed from (2).

Thereafter, the first mold 1 raised to the predetermined height by the mold separating part 60 is stacked on the second mold 2 placed on the rotating disc 10.

On the other hand, when the first and second molds (1) and (2) are stacked on each other as described above, a predetermined shape is formed by the mold (3) between the first and second molds (1) and (2). The eggplant is made of a mold, and the molten metal is injected into the mold.

Subsequently, when the first and second molds 1 and 2 into which the metal is injected are rotated by the rotation transfer member, that is, the first drive motor 15, the rotation disc 10 is rotated. The first and second molds 1 and 2 are moved to the next process, that is, the portion “B” of FIG. 1.

The first and second molds 1 and 2 are lifted through separate cranes, and then the first and second molds 1 and 2 are moved to the molding sand removing member.

Then, the foundry sand removing member proceeds to remove the foundry sand from the first and second molds (1) and (2) in which molten metal is injected to form the casting.

That is, as shown in FIG. 11, the molten metal is injected into the second filtering net 81 included in the foundry sand removing member to raise the first and second molds 1 and 2 to form the casting.

In the second filtering net 81, the casting sand is removed from the first and second molds 1 and 2 to vibrate so that only the molding sand of the fine particles passes. The vibration of the second filtering net 81 is performed. It is made by a second spring 82 installed at each corner.

Therefore, when the removal of the molding sand from the first and the second mold (1) (2) is completed, the operator can separate the casting of the desired shape from the first and second mold (1) (2) to obtain Will be.

Here, under the second filter net (81) to spray water evenly to the molding sand removed from the foundry sand removing member to include water, and then transfer the foundry sand containing the water to the foundry sand supply member to be reused. The driving sand regeneration member is located.

That is, the conveying conveyor 91 included in the foundry sand regeneration member is supplied to the first filtering network 22 to reuse the foundry sand of the fine particles having passed through the second filtering network 81 as shown in FIG. 11.

At this time, the conveying conveyor (91) is provided with a crushing rod (92) at a predetermined interval, the crushing rod (92) when the casting sand of the fine particles through the conveying conveyor (91) is further transferred to the casting sand of the fine particles. It acts to break it into small particles.

In addition, the transfer conveyor 91 is formed with a water spray unit 93 having a spray nozzle 93a, as shown in FIG.

The injection nozzle 93a of the water spraying unit 93 injects a predetermined amount of water into the molding sand of fine particles conveyed while being crushed by the crushing rod 92 to re-induce the water content of the molding sand supplied to the first filtering network 22 again. By adjusting, the reused casting sand supplied to the upper and lower molds 1 and 2 through the first filtering net 22 of the casting sand supply member can maintain the moisture required for the casting production.

As described above, the present invention allows the manufacturing process of the sand casting to be made semi-automatically, eliminating the inconvenience of the conventional manual production of the casting, that is, the inconvenience of flipping the mold mold that was made by manual, as well as the size of the casting It improves the convenience of casting production by increasing the precision and evenly distributing water in the molding sand separated from the mold to enable reuse of the casting sand.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims (9)

In the conventional structure in which the mold is inserted between the first and second molds in which the foundry sand is filled so that the molten metal is put into the casting, A rotation conveying member which rotates to change the positions of the raised first and second molds and the mold when the stacked first and second molds and the mold are mounted; A casting sand supplying member which drives to supply the molding sand containing moisture to the first and second casting molds mounted on the rotation transfer member; A flipping member for lifting up and down the first and second molds so that the molding sand is evenly filled with the first and second molds; A mold removing member for removing a mold located between the first and second molds so that one mold is made from the first and second molds each of which is filled with molding sand from the inverter of the tongs member; Located on the side of the rotational transfer member, the molten metal is injected into the mold made by the mold removing member to complete the molding, and then the first and second molds are moved through the rotational transfer member. A molding sand removing member for removing the molding sand from the mold; And, A casting sand regeneration member which evenly sprays water into the foundry sand removed from the foundry sand removing member to include water, and then transfers the foundry sand containing the moisture to the foundry sand supplying member to drive reuse of the foundry sand; Foundry manufacturing apparatus characterized in that consisting of. The method of claim 1, wherein the rotational conveying member, A first and second molds filled with molding sand and a rotating disc having a circular gear portion at a bottom thereof to move the positions of the molds and molds when the molds are stacked and raised; A cylindrical rotating shaft coupled to a central portion of the circular gear portion through a bearing to form a space in the central portion to guide and support rotation of the rotating disc; And a driving part including first and second driven gears, a driving gear, and a first driving motor to be engaged with the circular gear and to rotate the rotating disc. The method of claim 1, wherein the molding sand supply member, A first filter net supported by a support frame and vibrating to supply only the fine molding sand to the first and second molds mounted on the rotating disc; A first spring installed at each corner of the first filtering net and guiding a vibration range of the first filtering net; A second drive motor for driving the vibration of the first filter network; Having a pulley connected to the second drive motor, characterized in that it comprises a vibration rod that rotates to vibrate the first filter network according to the driving force of the second drive motor that is transmitted through the pulley Device. The method of claim 1, wherein the flipping member, A transfer frame having a tooth on one side and a wire that is vertically erected vertically with one side of the rotating disc and spaced in the space of the rotating shaft, the vertical movement being driven by the motor; A first conveying member which is conveyed up and down along the teeth of the conveying frame so as to lift the molds 1 and 2 and the mold when the vertical movement of the wire occurs; A rod frame coupled to a plurality of support rods in a horizontal direction while being integrally coupled to the lower end of the first conveying member; A fixed frame in which the components of the mold removing member are seated on the inner surface of the rotating disc in a "c" shape firmly fixed to the rod of the rod frame; And a second locking rod extending in the horizontal direction from the upper end of the fixed frame so that the first and second molds and the mold can be lifted and the wire can be hooked together with the first locking rod so that the mold can be flipped. Foundry manufacturing apparatus characterized in that. The method of claim 1, wherein the mold removing member, A third driving motor positioned and driven on an outer upper surface of the fixing frame included in the flipping member; A plurality of transfer rods erected vertically in the fixing frame of the flipping member; A plurality of mold separating parts for lifting the first mold having the locking bracket in a horizontal state while being transported in a vertical direction along a feed rod when the third driving motor is driven; And a plurality of mold separating parts for lifting the mold placed on the second mold frame in a horizontal state while transferring the mold from the third driving motor in the vertical direction along the transfer rod. The method of claim 5, wherein the mold frame separator, A second conveying body coupled to the conveying rod and conveyed up and down from the driving of the third driving motor; A first hydraulic cylinder having a first actuating rod coupled to the second conveying body and linearly reciprocating; The apparatus for manufacturing a casting, comprising a mold lifting plate which is brought into close contact with the locking bracket of the first mold from the linear reciprocating motion of the first working rod to enable the lifting of the first mold. The method of claim 5, wherein the mold separation unit A third conveying body coupled to the lower ends of the plurality of conveying rods and vertically conveyed from the driving of the third driving motor; A second hydraulic cylinder coupled to the third conveying member and having a second reciprocating rod linearly reciprocating; The apparatus for manufacturing a casting, comprising a mold lifting plate which is brought into close contact with the bottom surface of the mold from the linear reciprocating motion of the second working rod to enable lifting of the mold. The method of claim 1, wherein the molding sand removing member, A second filtering network in which the first and second molds made of the casting are lifted by inserting the molten metal, and then the casting sand is removed from the mold to vibrate so that only the molding sand is passed. Foundry equipment is installed on each corner of the second filter network comprises a second spring for guiding the vibration range of the second filter network. The method of claim 1, wherein the foundry sand regeneration member, A conveying conveyor for supplying the foundry sand of the fine particles having passed through the second filter network of the foundry sand removing member to the first filter network included in the foundry sand supply member; A crushing rod formed at a predetermined interval on the plane of the conveying conveyor so that when the foundry sand of the fine particles is conveyed through the conveying conveyor, the sand of the fine particles is crushed into smaller particles; And a water injection unit having a spray nozzle to spray a predetermined amount of water into the foundry sand of the fine particles conveyed while being crushed by the crushing rod to control the water content of the foundry sand which is supplied to the first filtration network again. Manufacturing equipment.