KR101846508B1 - Kneading machine and molding apparatus including the same - Google Patents

Abstract

The present invention relates to a kneading machine for mixing sand and a binder, and a molding apparatus using the same to manufacture a mold or a core. The molding apparatus comprises: a plurality of hoppers to receive raw materials to manufacture the mold or the core; a kneading machine to mix the raw materials supplied by the hoppers to discharge kneaded sand; a blower head and a blowing plate to fill a mold with the kneaded sand discharged from the kneading machine; and a hot wind head to harden the mold or the core manufactured by the mold. The kneading machine is installed in the direction parallel with the ground, and uses a plurality of blades arranged in an internal space thereof and a kneading shaft to rotate the blades to simultaneously stir and supply the kneaded sand. According to the present invention, dust creation can be prevented when supplying raw materials. Exposure to external air is reduced in a kneading process, and the raw materials are continuously mixed and transported to continuously discharge high-quality kneaded sand. Therefore, productivity of the mold or the core can be improved.

Description

TECHNICAL FIELD The present invention relates to a kneading machine and a molding apparatus including the kneading machine,

The present invention relates to a kneader for mixing sand and a binder and a molding apparatus for producing a mold or a core using the kneader.

Generally, a mold or a core used in the casting industry is produced by mixing a yarn and a binder through a kneader, injecting a kneaded yarn mixed with a yarn and a binder into a mold using a molding machine Cured.

Fig. 1 shows an embodiment of a molding apparatus according to the prior art.

The illustrated shaping apparatus is a device for manufacturing a core and a casting using an inorganic binder using a yarn hopper for containing yarn, a weighing hopper for weighing the amount of yarn supplied to the kneader, And a blowing head for supplying the kneaded yarn produced by the kneader and injecting the kneaded yarn into a mold for forming the core, and the like.

On the other hand, the shaping apparatus constructed as above is constituted such that the movement of the yarn and the kneading yarn is controlled by its own weight in the yarn hopper, the kneading machine in the kneading machine, and the kneading hopper in the kneading machine.

Therefore, the yarn hopper located at the uppermost position is located at a considerable height from the ground, and the yarn is blown up by the air pump to supply the yarn, which causes a problem that a large amount of dust is generated.

In addition, in the case of the supply structure of the kneading yarn, the kneading yarn is exposed to the outside air, and thus the temperature control is not easy.

In addition, since the production of the kneading yarn is performed with respect to the amount of each supply, it is impossible to produce and supply the continuous kneading yarn, and the time required for the production of the mold or core yarn in the molding device is prolonged, I have.

KR 10-1515572 B1

An object of the present invention is to provide a kneader capable of continuous production of kneaded yarn.

Another object of the present invention is to provide a kneader which can prevent air exposure of a kneading yarn and can secure a housed time.

Another object of the present invention is to provide a molding apparatus which can easily manage temperature and humidity.

It is a further object of the present invention to provide a molding apparatus which can reduce the cost of supplying yarn and the occurrence of dust as the kneading is performed at a relatively low installation height from the ground.

A kneader according to the present invention includes a kneading shaft which is formed in parallel with a ground surface for producing a kneaded yarn and which is provided in the inner space and is rotated by a kneading motor and a kneading shaft which is formed on an outer surface of the kneading shaft, A plurality of blades for forming a kneaded yarn by stirring the raw materials and for transferring the produced kneaded yarn in one direction, wherein the plurality of blades are formed to have various slopes based on the kneading shaft, The kneading yarn is delayed in transporting or conveying.

A plurality of blades having a relatively large size and a slope of 45 degrees and arranged at equal intervals along the kneading shaft; a plurality of blades having a size smaller than that of the transfer blades, And a conveying delay blade having various slopes, which are installed at a narrower interval than the conveying blades, are included.

In another aspect of the present invention, a kneader according to the present invention includes: a kneading shaft formed in parallel with a ground surface for producing a kneaded yarn and rotated by a kneading motor provided in the inner space; And a plurality of blades for conveying the kneaded yarn in one direction, wherein the plurality of blades have various sizes and installation positions and various slopes based on the kneading shaft A blade group for forming a transfer pattern so that a transfer distance of the kneaded yarn is relatively long, a blade group for forming a stirring pattern forming a shorter transfer distance than the transfer pattern, and a blade group for forming a stirring pattern And forms a delay pattern which is formed in the reverse direction to the blade and delays the conveyance of the kneaded yarn And has a group of blades.

According to another aspect of the present invention, there is provided a molding apparatus comprising a kneader for mixing a plurality of hoppers supplied with a raw material for producing a mold or a core, a raw material supplied through the hopper and discharging a kneaded yarn, A blower head and a blowing plate for filling the kneading yarn into a mold, and a hot air head for curing the mold or the core made by the mold, wherein the kneading machine is installed in a direction parallel to the ground, And a plurality of blades formed so as to have a tilt around the kneading shaft. The stirring of the kneading yarn and the supply of the kneading yarn are simultaneously performed by the rotation of the kneading shaft.

Wherein the plurality of blades delay or convey the kneaded yarn according to an installation position and an inclination angle with respect to the kneading shaft.

According to another aspect of the present invention, there is provided a molding apparatus comprising a kneader for mixing a plurality of hoppers supplied with a raw material for producing a mold or a core, a raw material supplied through the hopper and discharging a kneaded yarn, A blower head and a blowing plate for filling the kneading yarn into a mold, and a hot air head for curing the mold or the core made by the mold, wherein the kneading machine is installed in a direction parallel to the ground, Wherein the plurality of blades are formed to have various sizes, installation positions, and various inclination angles with respect to the kneading shaft, so that the feeding distance of the kneading yarn is varied according to the angle of the mounting position and the inclination And is formed differently.

Wherein the plurality of blades include a group of blades for forming a transfer pattern so that a transfer distance of the kneaded yarn is relatively long, a group of blades for forming a stirring pattern forming a shorter transfer distance than the transfer pattern, And a blade group formed in a reverse direction to the forming blade to form a delay pattern for delaying the conveyance of the kneaded yarn.

Wherein at least one of the kneader, the blower head and the blowing plate has a circulation path for cooling water for temperature control.

In the molding apparatus according to the present invention, the kneader is installed in a direction parallel to the paper surface, and the kneading process is performed in the lateral direction. Therefore, a process for manufacturing a mold or a core at a relatively low height as compared with the conventional technique can be performed, thereby improving the workability.

Particularly, in the process of supplying yarn to the kneader, since the installation height of the hopper is lowered, the yarn can be supplied without the air pump, so that the dust generated when the yarn is supplied can be significantly reduced.

Also, the kneader according to the present invention can reduce the exposure to the outside air during the kneading process, and the kneading yarn of good quality can be continuously discharged as the mixing and transferring of the raw materials proceed continuously.

Therefore, as compared with the prior art, the time required for the production of the mold or the core can be shortened as the kneading time is shortened, so that the productivity of the mold or the core can be improved.

In addition, the molding apparatus according to the present invention can be performed while minimizing the exposure of the raw material to the kneading process and the blowing process, and the cooling channel is formed in the kneader, the blower head, and the blowing plate, Management can be made more effective.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view for explaining a general casting production process. FIG.
2 is a view showing an embodiment of a molding apparatus according to the present invention;
3 is a view showing the structure of a kneading blade of a kneader which is a main constituent of the present invention.
4 is a view for explaining a replacement structure of a blower head and a hot air head, which are essential parts of the present invention.
5 is a schematic view illustrating a flow path structure for temperature and humidity control of the molding apparatus according to the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. It is to be understood, however, that the spirit of the invention is not limited to the embodiments shown and that those skilled in the art, upon reading and understanding the spirit of the invention, may easily suggest other embodiments within the scope of the same concept. Also, in this specification and claims, " or / and " are defined to include each and every one or more combinations of the mentioned items.

FIG. 2 is a view showing an embodiment of a molding apparatus according to the present invention, and FIG. 3 is a view showing the structure of a kneading blade of a kneader which is a main constituent of the present invention. Fig. 2 is a view for explaining a replacement structure of a blower head and a hot air head, which are the essential components of the blower head.

Referring to these figures, in the present embodiment, the molding apparatus 100 includes a plurality of hoppers to which raw materials are supplied for producing a mold or a core, a kneader 120 for mixing the supplied raw materials to enable continuous discharge, A blower head 140 and a blowing plate 150 for filling a kneading yarn discharged from the kneader 120 into a mold 190 and a blowing head 150 for blowing a hot air blower 150 for curing a mold or a core manufactured by the mold 190. [ And a control unit 180 for controlling the respective components.

The plurality of hoppers are respectively divided into a sand supply hopper 112, a promoter supply hopper 114 and a binder supply hopper 116. A discharge port communicates with the kneader 120 to supply air Exposure can be reduced.

The kneader 120 mixes raw materials contained therein to produce a kneaded yarn and successively discharges the kneaded yarn. The kneader 120 is formed to have a longer length in the lateral direction than the height, And mixed while being transported in the transverse direction.

A kneading shaft 121 rotated by a kneading motor 122 and a kneading blade group 126 formed on the outer surface of the kneading shaft 121 are included in the inner space of the kneading machine 120.

The kneading blade group 126 is formed of a plurality of kneading blades and is formed to have various sizes and is arranged to have a predetermined slope with respect to the axial direction of the kneading shaft 121.

That is, the kneading blade group 126 controls the mixing and feeding of the raw materials by using the inclination and the size of the kneading blades, and has a uniform blade arrangement pattern for this purpose.

In the present embodiment, the kneading blades 126 are divided into six installation spaces in the longitudinal direction, as shown in FIG. 3, and are arranged in the respective installation spaces according to their sizes and slopes.

In detail, among the six installation spaces of the kneading shaft 121, the installation space 1 and the installation space 4 form a transfer pattern for transferring the greatest distance while stirring the raw material.

The installation space (1) and the installation space (4) are located at the positions where the kneading shaft (121) is divided, and the blades having the longest length and the inclination of 45 degrees are arranged at regular intervals, A2 " in the installation space " 4 "

Here, the blade corresponding to "A1" "A2" is formed so as to be adjacent to the inner surface of the kneader 120 at one end thereof, effectively transporting the raw material, and is hereinafter referred to as a "feed blade" for convenience of explanation.

On the other hand, in the remaining installation spaces 1 to 6 where the transfer blades are installed, a plurality of blades having a shorter length than the transfer blades and having various inclination angles are formed, and this is referred to as a 'kneading blade' for convenience of explanation.

The kneading blade is configured for effective stirring of the kneaded yarn in a limited kneading space, and is formed at various inclination angles in the range of 30 to 75 degrees in the present embodiment.

Wherein the kneading blade includes a stirring pattern in which a slope is formed in the same direction as a delay pattern in which a slope is formed in a direction opposite to the conveying blade, and in any one of the six installation spaces divided in the same direction as the conveying blade By providing the kneading blade, the conveyance of the kneaded yarn can be assisted.

That is, the kneading blade installed in the same direction as the conveying blade has a difference in moving distance of the kneading yarn according to the inclination, and the kneading blade provided in the reverse direction of the conveying blade increases the kneading property between the yarn and the binder and / And performs the function of holding the kneading yarn without advancing the kneading yarn in the conveying direction.

Therefore, according to the present embodiment, the exposure to the outside air can be reduced in the kneading process, and the kneading yarn of good quality can be continuously discharged as the mixing and transferring of the raw materials proceed continuously.

In addition, a cleaning means 124 is provided at one side of the kneader 120 to be able to open and close to clean the internal space.

The blower head 140 connected to the kneader 120 and filled with the kneading yarn is selectively brought into close contact with one end of the kneader 120 to reduce the exposure of the outside air to the blower head 140 Can be supplied.

The discharge unit of the kneader 120 is formed with a discharge unit (not shown) having a size corresponding to the upper end of the blower head 140, and the upper end of the blower head 140 is in close contact with the discharge unit The inlet portion is formed to include a predetermined buffer member.

The blower head 140 is further provided at its lower end with a blowing plate 150 for blowing the kneaded yarn filled in the blower head 140 into the mold 190. When the blower head 140 is filled with the kneading yarn, the blower head 140 moves to the upper side of the mold 190 and then the kneading yarn is filled.

After the filling of the kneaded yarn is completed, the blower head 140 moves again to the lower side of the kneader 120, and the hot air head 160 connected to the blower head 140 through the connection frame 172 is moved to the upper side of the mold 190 .

For this purpose, the blower head 140 and the hot air head 160 are connected to each other through a first connection frame 172 and are rotatable together. The center of the first connection frame 172 And a second connection frame 174 connected to the fixed shaft 171.

A head replacement cylinder 176 is further provided at one side of the second connection frame 174 so that the blower head 140 and the end product head 160 are fixed to the fixed shaft 171 As shown in FIG.

The mold 190 includes a stationary mold 192 that holds a fixed position and a movable mold 194 that selectively molds the stationary mold 192 by a movable mold cylinder 196, And is supported by a mold support frame 132 to hold the mold.

In the molding machine 100 having the above-described structure, the kneading machine 120 is long in the lateral direction, that is, in the lateral direction, as described above, so that a sufficient kneading time can be secured. So that the supply amount of the kneaded yarn can be adjusted more easily.

The total height of the molding apparatus 100 according to the present invention is determined by the height of the mold 190 from the supporting height of the blowing head 140 and the blowing plate 150 And the height of the kneader (120).

Therefore, the yarn can be supplied to the sand hopper 112 without the air pump, thereby preventing generation of dust due to supply of the yarn.

In the molding apparatus 100 according to the present invention, a fluid flow path for temperature and humidity control is formed.

5 is a schematic view illustrating a flow path structure for temperature and humidity control of the molding apparatus according to the present invention.

Referring to the drawing, a cooling water inlet hole 120a through which cooling water flows into the kneader 120 is formed adjacent to a position where the raw material is supplied, and a cooling water discharging hole 120b is formed in a portion adjacent to a position where the kneader is discharged. .

The cooling water inflow hole 120a and the cooling water discharge hole 120b are connected to each other through a cooling passage for winding the entire kneader 120. A circulation pump (not shown) is further provided at one side of the cooling passage The circulation path of the cooling water is formed in the kneader 120. [

Accordingly, it is possible to control the temperature of the inner space in the kneading process by circulating the cooling water through the circulation path of the cooling water as described above, and further includes a temperature sensor (not shown) at one side of the inner space of the kneader 120, The temperature and humidity information can be more effectively managed by receiving the temperature sensing information through the controller 180. [

The circulation path of the cooling water is also formed in the blower head 140 and the blowing plate 150.

That is, even in the case of the blower head 140, the cooling water inlet hole 140a and the cooling water outlet hole 140b are formed so that the cooling passage is formed to take up the blower head 140 and connected to the circulation pump .

5, the cooling water inflow hole 150a and the cooling water discharge hole 150b are formed, and the circulation path of the cooling water is formed by using the cooling passage and the circulation pump .

As the cooling water circulation path is formed as described above, in the molding apparatus 100 according to the present invention, the temperature control is performed through the flow control of the fluid during the series of processes for producing the kneaded yarn and for filling the mold 190 with the kneaded yarn. And the kneading yarn can be continuously supplied while minimizing the exposure of the outside air, so that there is an advantage that continuous production of a high-quality mold or core can be achieved.

100 Molding device 120 Kneader
140 ........ Blower head 150 ......... Blowing plate
160: hot air head 180:
190 ........ Mold

Claims (8)

A kneading shaft provided in the inner space and rotated by a kneading motor, the inner space for producing the kneading yarn being formed in parallel with the paper surface;
A plurality of blades formed on an outer surface of the kneading shaft to produce a kneaded yarn by agitating a raw material flowing into the inner space and to transfer the kneaded yarn in one direction,
The plurality of blades are formed to have various slopes with respect to the kneading shaft. The kneading yarns are delayed in transporting or conveying the kneading yarns according to the installation position and the angle of inclination. The blades are relatively large in size and have a slope of 45 °, A plurality of transfer blades arranged at regular intervals,
And a transfer delay blade having a slope smaller than that of the transfer blade and provided at a narrower interval than the transfer blade in the same or opposite direction as the transfer blade,
A coolant discharge hole 120a is formed in a portion adjacent to a position where the raw material is supplied and a coolant discharge hole 120b is formed in a portion adjacent to a position where the kneaded yarn is discharged, The hole 120b is connected through a cooling channel in which the entire kneader 120 is wound and a circulation pump (not shown) is further provided at one side of the cooling channel so that a circulation path of the cooling water is formed in the kneader 120 Whereby the temperature of the internal space can be controlled in the kneading process by circulating the cooling water.
The method according to claim 1,
Further comprising a temperature sensing sensor (not shown) at one side of the inner space of the kneader 120 and capable of temperature and humidity control by receiving temperature sensing information through the control unit 180.
A kneading shaft which is formed in parallel with the paper surface for producing a kneaded yarn and which is rotated by a kneading motor provided in the inner space;
A plurality of blades installed on the kneading shaft to stir the raw material flowing into the internal space to produce a kneaded yarn and convey the resulting kneaded yarn in one direction,
Wherein the plurality of blades
A group of blades formed to have various sizes and mounting positions and various slopes with respect to the kneading shaft and forming a transfer pattern such that a transfer distance of the kneading yarn is relatively long;
A group of blades forming a stirring pattern that forms a shorter transport distance than the transfer pattern, and
And a blade group formed in a direction opposite to the blade forming the transfer pattern and the stirring pattern to form a delay pattern for delaying the transfer of the kneaded yarn,
A coolant discharge hole 120a is formed in a portion adjacent to a position where the raw material is supplied and a coolant discharge hole 120b is formed in a portion adjacent to a position where the kneaded yarn is discharged, The holes 120b are connected through a cooling channel in which the entire kneader 120 is wound and a circulation pump (not shown) is further provided at one side of the cooling channel so that a circulation path of the cooling water is formed in the kneader 120 Whereby the temperature of the internal space can be controlled in the kneading process by circulating the cooling water.
A plurality of hoppers to which a raw material is supplied for producing a mold or a core;
A kneader for mixing the raw materials supplied through the hopper and discharging the kneaded yarn;
A blower head and a blowing plate for filling the kneaded yarn discharged from the kneader into a mold,
And a hot air head for curing the mold or the core produced by the mold,
The kneader
A kneading shaft provided in the inner space, and a plurality of blades provided so as to have a tilt around the kneading shaft, wherein the stirring of the kneading yarn and the supply of the kneading yarn are simultaneously Lt; / RTI &
A coolant discharge hole 120a is formed in a portion adjacent to a position where the raw material is supplied and a coolant discharge hole 120b is formed in a portion adjacent to a position where the kneaded yarn is discharged, The holes 120b are connected through a cooling channel in which the entire kneader 120 is wound and a circulation pump (not shown) is further provided at one side of the cooling channel so that a circulation path of the cooling water is formed in the kneader 120 And the temperature of the internal space can be controlled in the kneading process by circulating the cooling water.
5. The method of claim 4,
Wherein a temperature sensor (not shown) is further provided at one side of the inner space of the kneader (120), and the temperature and humidity can be managed by receiving temperature sensing information through the controller (180).
A plurality of hoppers to which a raw material is supplied for producing a mold or a core;
A kneader for mixing the raw materials supplied through the hopper and discharging the kneaded yarn;
A blower head and a blowing plate for filling the kneaded yarn discharged from the kneader into a mold,
And a hot air head for curing the mold or the core produced by the mold,
The kneader
A plurality of blades provided in the inner space and a kneading shaft for rotating the blades,
The plurality of blades are formed to have various sizes and installation positions and various slopes based on the kneading shafts, and the conveying distance of the kneading yarns is formed differently according to the angle of the installation position and the inclination,
A coolant discharge hole 120a is formed in a portion adjacent to a position where the raw material is supplied and a coolant discharge hole 120b is formed in a portion adjacent to a position where the kneaded yarn is discharged, The holes 120b are connected through a cooling channel in which the entire kneader 120 is wound and a circulation pump (not shown) is further provided at one side of the cooling channel so that a circulation path of the cooling water is formed in the kneader 120 And the temperature of the internal space can be controlled in the kneading process by circulating the cooling water.
7. The apparatus according to claim 6,
A blade group for forming a transfer pattern such that a transfer distance of the kneading yarn is relatively long,
A group of blades forming a stirring pattern that forms a shorter transport distance than the transfer pattern, and
And a blade group formed opposite to the blade forming the transfer pattern and the stirring pattern and forming a delay pattern for delaying the transfer of the kneaded yarn.
The method according to claim 4 or 6,
A cooling water inlet hole 140a and a cooling water outlet hole 140b are formed in at least one of the kneader, the blower head and the blowing plate so that the cooling passage is formed to take up the blower head 140, Configured to And a circulation path of cooling water for temperature control is formed.

Images