KR101950026B1 - Closed-loop sand reclaim type casting manufacturing system - Google Patents

Abstract

The present invention relates to a technology for regeneration of a waste sand, and relates to a sand reclamation casting manufacturing system for allowing sand for casting to be collected, regenerated and supplied in a closed loop structure at a production site.
The present invention relates to a casting apparatus, a casting apparatus and a casting production system for producing a casting including a degreasing apparatus, the casting apparatus comprising a cleaning device for cleaning at least waste plastics recovered from the molding apparatus or the degreasing apparatus, And a storage and supply device for storing the regenerated yarn and supplying the regenerated yarn to the molding device, wherein the molding device and the cleaning device are each provided with a kneading yarn or a kneading yarn, At least a part of the movement path of the cleaning yarn is formed in the lateral direction, and a plurality of blades having different shapes and rotation radii are provided on the lateral movement path so as to have a certain pattern. According to the present invention, it is possible to improve the quality of the casting while the process of manufacturing the casting using the regenerated yarn is more stably managed.

Description

Closed-loop sand reclaim type casting manufacturing system

The present invention relates to a technology for regeneration of a waste sand, and relates to a sand reclamation casting manufacturing system for allowing sand for casting to be collected, regenerated and supplied in a closed loop structure at a production site.

Casting is a process in which a material is heated at a temperature higher than its melting point to form a liquid phase, and a liquid material is injected into a mold to cure the mold. The mold used for casting is a mold, The products made from these are called castings.

FIG. 1 is a view for schematically explaining a general casting production process.

Referring to the drawings, a process for manufacturing a casting includes a molding process for manufacturing a mold or a mold and a core, a molding process for forming a space in which a liquid material is injected by molding the produced mold or mold and core, An injection process in which the molten material is injected into the formed space, a mold disassembly process in which the injected material is solidified and then the mold is separated, and a process of post-processing the casting separated from the mold.

Meanwhile, the molding process and the molding process are performed by a molding machine.

The molding machine includes a hopper for accommodating a yarn, a kneader for mixing the yarn and the binder, a blowing head for injecting the kneaded yarn produced by the kneader into the mold, and a mold for molding the mold, .

Then, the molds produced by the molding machine are transferred to the casting apparatus, and the casting is performed through the injection process in which the molten material is injected into the molds.

After the molding is completed, the hardening process of the casting is performed, and the hardened casting is separated through the mold disassembling process and then transferred to the desiccator.

In the above-described desiccator, the wastepaper is removed from the casting by a method such as vibration isolation or hemming, and the casting after the removal of the wastepaper is finished by the post-treatment such as washing and drying.

On the other hand, as the industry grows in height and the quality requirement for the main products increases, a high-quality molding material suitable for the material of the main product is required. However, since there is a limit to the domestic production of high-quality foundry sand, the dependence of imported foundry sand is increased and the price of foundry sand is increasing.

Accordingly, in order to solve the above-mentioned problems, various techniques for regenerating waste maggot have been researched and developed.

For example, Korean Patent Registration No. 10-1428424 entitled " Casting Process Processing System for Casting " proposes a casting processing system for cooling and reprocessing a casting process used in casting.

Korean Patent No. 10-206607 entitled " Method and Apparatus for Recycling Spent Waste < RTI ID = 0.0 > I " < / RTI > has disclosed a technique for washing waste paper of a casting mold after a mold work has been completed and separating the waste paper and adhesive, Korean Patent No. 10-1173053 entitled " Ultrasonic Waste Removal Device for Waste Removal < Desc / Clms Page number 2 > " discloses a method for minimizing the number of surface treatments by inducing interface separation between a molding sand and a binder using ultrasound And a system for enhancing process efficiency by integrating a multi-step process is disclosed.

Korean Patent No. 10-0760646 entitled " Method for manufacturing reclaimed sand using a waste maggot, " discloses a method for manufacturing recycled sand by recycling waste paper sandwiched by the chemical reaction of sodium silicate and CO ₂ gas in the production of a casting mold. And various types of reclaiming technologies for reclaiming wastes have been researched and developed.

However, since the process of recovering waste from the manufacturing process of castings is difficult and limited due to the environmental conservation law, it also takes a lot of cost in the regeneration process. Therefore, most of the waste products are recovered through specialized waste disposal companies in Korea, .

KR 10-1428424 B1 KR 10-206607 B1 KR 10-1173053 B1 KR 10-0760646 B1

It is an object of the present invention to provide a method for producing a casting mold by forming a closed loop path for recovering, washing, drying, storing, and supplying waste produced during the production of a casting, And to provide a high casting production system.

Another object of the present invention is to provide a process for producing a casting product, in which a raw material for producing a casting mold is supplied by forming a process of collecting, washing, drying, storing and supplying a waste product, The present invention provides a recycling waste recycling casting manufacturing system which can detect and change the working environment change information and monitor the result of the monitoring.

The present invention relates to a casting apparatus, a casting apparatus and a casting production system for producing a casting including a degreasing apparatus, the casting apparatus comprising a cleaning device for cleaning at least waste plastics recovered from the molding apparatus or the degreasing apparatus, And a storage and supply device for storing the regenerated yarn and supplying the regenerated yarn to the molding device, wherein the molding device and the cleaning device are each provided with a kneader Or at least a part of the movement path of the cleaning yarn is formed in the lateral direction, and a plurality of blades having different shapes and rotation radii are provided on the lateral movement path so as to have a certain pattern.

The molding apparatus further includes sensing means for sensing a temperature change of the molding process, receiving the temperature change information of the sensing means, showing the temperature change of the molding device in accordance with the received temperature change information, And an integrated monitoring device for transmitting a control command for temperature improvement.

In the integrated monitoring apparatus, when the temperature sensing information through the sensing means is out of the setting range, the circulation control command of the cooling water is transmitted along the cooling water circulation path of the molding apparatus.

The cleaning device may further include sensing means for sensing a change in at least one of electrical conductivity, pH, and temperature of the cleaning liquid during the cleaning process. The sensing device may be configured to receive the sensing information of the sensing means, And an integrated monitoring device for delivering a control command for improving at least one of electrical conductivity, pH, and temperature of the cleaning process.

In the integrated monitoring apparatus, when the sensed information of at least one of electric conductivity, pH, and temperature exceeds a set range, the controller transmits a discharge restriction and a cleaning rate control command to the cleaning apparatus.

According to the present invention, a process for recovering, washing, drying, storing and supplying waste generated in the production of a casting is formed into a closed loop path, thereby supplying a raw material for the production of a casting mold, .

According to the present invention, there is provided a cleaning device for cleaning a waste paper and a shaping device for manufacturing a mold or a core, and a conveyance path for conveying a cleaning yarn or a kneading yarn in a lateral direction, The kneading yarn or the cleaning yarn can be delayed in conveyance, so that the kneading or cleaning time can be sufficiently secured.

In addition, in the present invention, the molding device and the cleaning device are provided with the sensing means, and the integrated monitoring device for monitoring the sensing device and the cleaning device are further provided, so that the kneading or cleaning environment conditions can be varied according to the sensing information of the sensing means. There is an advantage that the production of a cast product is possible.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view for explaining a general casting production process. FIG.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a closed-
Figs. 3 to 5 are diagrams for explaining the structure of a molding apparatus which is a main constituent of the present invention; Fig.
6 is a view for explaining an embodiment of a mold manufacturing process according to the present invention.
7 is a photograph showing a casting process performed in the present invention.
8 is a view for explaining an embodiment of a casting process according to the present invention.
9 is a photograph showing an embodiment of the degumming apparatus according to the present invention.
10 is a view for explaining an embodiment of a desizing process according to the present invention.
11 to 13 are views for explaining a detailed structure of a cleaning device which is a main constituent of the present invention.
FIG. 14 illustrates an embodiment of a cleaning process according to the present invention. FIG.
15 is a view showing an embodiment of a drying apparatus according to the present invention.
16 is a view showing one embodiment of a drying process according to the present invention.
17 is a view showing an embodiment of a storage and supply device which is a main constituent of the present invention.
18 shows one embodiment of a feeding process 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 schematically showing a control structure of a closed loop yarn regeneration casting production system according to the present invention.

Referring to the drawings, the present invention detects changes in the work environment in each process for manufacturing castings and controls the change in the work environment based on the sensed information.

To this end, the present invention includes an integrated monitoring device for receiving work environment change detection information from an apparatus for performing each process, and for transmitting a control command according to detection information to a corresponding device, and for transmitting sensing information and control signals Lt; / RTI >

Hereinafter, the main components of the present invention will be described for the main processes for producing castings.

FIGS. 3 to 5 are views for explaining the structure of a molding apparatus which is a main constituent of the present invention, and FIG. 6 is a view for explaining an embodiment of a mold manufacturing process according to the present invention.

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, Mix while transporting 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 to allow the blower head 140 and the hot air head 160 to move along the fixing 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.

In addition, since the supply amount can be adjusted as described above, the introduction of the raw material can be performed simultaneously with the supply.

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.

In detail, the kneader 120 is provided with a cooling water inflow hole 120a through which cooling water flows in a portion adjacent to a position where the raw material is supplied, and a cooling water discharge hole 120b is formed in a portion adjacent to a position where the kneading yarn 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 inflow hole 140a and the cooling water discharge hole 140b are formed so that the cooling passage is formed to take up the blower head 140 and connected to the circulation pump .

3, 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 .

The circulation path of the cooling water formed as described above can be controlled by controlling the flow of the fluid during the series of processes of producing the kneaded yarn and filling the kneaded yarn into the mold 190. The kneading yarn can be continuously Therefore, there is an advantage that continuous production of high-quality mold or core can be achieved.

On one side of the kneader 120, a sensing unit 710 for measuring the temperature of the internal space is further provided.

The sensing unit 710 senses the temperature of the internal space of the kneader 120 and transmits sensing information to the control unit 180 while the stirring unit 710 is operating. And transfers temperature information inside the kneader 120.

As described above, the information transmitted to the integrated monitoring device can be displayed through the display, and when the temperature sensing range within the kneading machine 120 is equal to or higher than the set temperature, the controller transmits a control command for circulating the cooling water to the molding apparatus 100 .

To this end, the display of the integrated monitoring device may be formed as a touch screen, and an icon-shaped button corresponding to a cooling water circulation control command is displayed on the display.

Although not shown, the blower head 140 and the blowing plate 150 may further include sensing means for sensing the temperature. Like the kneader 120, the sensing information is transmitted to the integrated monitoring device, The temperature control can be performed.

That is, in this embodiment, the molding process senses a temperature change of at least one of the kneader 120, the blower head 140 and the blower plate 150 through the sensing means 710, and transmits the detection result to the integrated monitoring device And a shaping step of controlling the temperature of the configuration requiring the temperature environment improvement by the integrated monitoring apparatus according to the detection result.

Meanwhile, in the molding apparatus 100 having the above-described structure, waste paper may be generated during the filling of the kneading yarn into the mold 190, and such waste paper is collected and transferred to the cleaning apparatus 400 .

A mold or a core produced through the molding apparatus 100 is transferred to the casting apparatus 200 to perform a casting process. FIG. 7 is a photograph showing a casting process performed in the present invention. 8 is a view for explaining an embodiment of the casting process according to the present invention.

Referring to these figures, the casting apparatus 200 forms the molten metal M by using the heating furnace 210 and the molten metal bucket 220, and injects the molten metal M formed into the mold 240 After that, it is hardened to produce a casting.

Meanwhile, in the present invention, sensing means 720 for temperature sensing is further provided on one side of the casting apparatus 200.

The sensing means 720 is configured to determine whether a worker is performing work in the vicinity of the mold, and senses the temperature around the mold and transmits the sensed temperature to the integrated monitoring apparatus.

In the integrated monitoring apparatus, based on the temperature information sensed by the sensing means 720, it is possible to determine whether the operator is located around the mold when injecting the molten metal M. When the operator injects the molten metal M And transmits a control command for stopping the injection of the molten metal M to the casting apparatus 200 when the molten metal M is positioned around the mold.

Therefore, it is possible to prevent a safety accident of the operator by the molten metal (M) during the casting process.

That is, in the present embodiment, the casting process is performed by sensing the temperature change of at least the periphery of the molding device through the sensing means 720 and transmitting the detected temperature change to the integrated monitoring device, Is determined by the casting step.

The casting produced through the above-described casting step is conveyed to the desizing device 300 together with the casting mold.

FIG. 9 is a photograph showing an embodiment of the degreasing apparatus according to the present invention, and FIG. 10 is a view for explaining a degasifying process according to an embodiment of the present invention.

The degreasing device 300 is for separating the casting by removing the wastepaper from the casting conveyed together with the casting mold. The separating device 300 includes a main frame 320 forming a degassing part 310 for separating the casting with the casting attached thereto, A vibration motor 340 provided at one side of the main frame 320 to generate vibration and a buffer member 360 provided at one side of the main frame 320 for performing vibration damping .

Further, a dust collector provided with a sensing means 730 is further provided around the dressing device 300.

The sensing means 730 is configured to detect air pollution around the dressing device 300 and transmits sensing information to the integrated monitoring device.

The dust collector sucks contaminated air using a suction motor (25), and sucked air is filtered and discharged through a filter.

In the integrated monitoring apparatus, whether or not the dust collector is driven is determined based on the air pollution information transmitted through the sensing means 730.

That is, when the desalination process is performed to increase the air pollution degree around the degreasing apparatus 300, the detection information is transmitted to the integrated monitoring apparatus. If the degree of air pollution exceeds the setting range, The driving command can be transmitted to filter the contaminated air.

To this end, an icon corresponding to a driving command of the dust collector may be further displayed on the display of the integrated monitoring apparatus.

That is, in this embodiment, at least the air pollution degree around the desulfurizer 300 is sensed through the sensing means 730 and transmitted to the integrated monitoring apparatus, And the dust collector for improvement is driven and controlled.

Meanwhile, the casting material separated from the waste sand in the deslagging apparatus 300 is transferred to the post-treatment apparatus 10 (see FIG. 1) to form a casting product through washing and drying.

The waste chippers separated from the casting are recovered in the same manner as the molding apparatus 100 and transferred to the cleaning apparatus 400. To this end, a transfer means may be further provided between the dressing apparatus 300 and the cleaning apparatus 400 have.

The conveying means may be configured to include a conveying motor, a conveying pulley, and a conveyor belt. One side of the conveyor belt is positioned below the delasers 310 so that the waste sand falling from the delasers 310 is seated And the other side is connected to the waste material inflow part 410 (see FIG. 11) of the cleaning device 400, which will be described below, so that the waste paper produced during the degreasing process can be automatically recovered.

The waste ash recovered from the above-described molding apparatus 100 and / or the degreasing apparatus 300 is washed in the cleaning apparatus 400 for regeneration and then passes through the drying apparatus 500 and is discharged through the drying apparatus 500 The regenerated product to be produced is accommodated in the storage and supply apparatus 600 to be described below and supplied again to the molding apparatus 100.

11 to 13 are views for explaining a detailed structure of a cleaning device constituting a substantial part of the present invention, and FIG. 14 is a view showing an embodiment of a cleaning process according to the present invention.

Referring to these drawings, the cleaning apparatus 400 according to the present invention performs multiple washing using the first washing tank 420 and the second washing tank 440 to remove the wastewater flowing into the waste water inflow unit 410 through the first washing tank 420 and the second washing tank 440.

A predetermined amount of the cleaning liquid is filled in the first and second cleaning tanks 420 and 440, and the cleaning liquid is supplied to the first and second cleaning tanks 420 and 440 by the cleaning liquid tank 460.

In detail, in this embodiment, the cleaning apparatus 400 communicates with the first cleaning tank 420, the second cleaning tank 440, and the cleaning liquid tank 460, and the second cleaning tank 440 communicates with the cleaning liquid tank 440. [ (460) and the first cleaning tank (420).

11, the second cleaning tank 440 is positioned below the first cleaning tank 420 and the cleaning liquid tank 460, and the first cleaning tank 420 and the cleaning liquid tank 460 And the second washing tank 440 is formed to have a longer length in the transverse direction than the height.

Further, a cleaning yarn discharging unit 480 for discharging the cleaned yarn is further formed at a lower side of the second cleaning tank 440, and the cleaning yarn discharging unit 480 is selectively discharged A discharge valve 482 is provided.

Meanwhile, the upper part of the waste water inflow part 410 is formed to have a relatively large diameter to induce smooth inflow of the waste water, and the lower end communicates with the first washing tank 420. That is, the waste chimney yarn flowing into the waste chimney inflow section 410 is received in the first washing tank 420.

As described above, the cleaning liquid tank 460, the first cleaning tank 420 and the second cleaning tank 440 are communicated with each other to maintain the state where the cleaning liquid is filled, and the cleaning liquid tank 460, The cleaning tanks 420 are provided at the corresponding heights so that the filled cleaning liquids have the same water level.

In this state, the wastepaper which flows into the waste water inflow part 410 is received in the first washing tank 420 together with the washing liquid, and is then sucked by the blades provided in the first washing tank 420 , disintegration) and primary wash.

The first cleaning motor 421 is connected to the first reduction gear 423 to generate the first cleaning motor 421. The first cleaning motor 421 is provided on the outer side of the first cleaning tank 420 to generate a rotational force, Thereby forming a motor portion.

The first reduction gear 423 is configured to transmit the rotation speed of the first cleaning motor 421 to the blade by reducing the rotation speed of the first rotation motor 421. The first reduction gear 423 is connected to the first rotation shaft 422 and the first extension shaft 424, And is connected to a plurality of blades.

The plurality of blades include a first blade 425 and a second blade 426, which are provided on both sides of the first rotation axis 422, respectively.

The first blade 425 is formed to be inclined toward the first rotation axis 422 so as to be collected at the central portion of the first washing tank 420 while disinfecting and washing the waste wastepaper, The blade 426 is disposed horizontally with the bottom and is conveyed to the lower portion of the first washing tank 420 while the waste sand is disintegrated and washed.

A pier plate 450 is further provided between the first and second cleaning tanks 420 and 440. The perforated plate 450 is disintegrated to a predetermined size or less in the first washing tank 420 and the primary washing tank 440 is fed to the second washing tank 440.

The second cleaning tank 440 is configured to more effectively clean the primary cleaning yarn passed through the perforated plate 450 in a direction in which the cleaning space intersects with the first cleaning tank 420, The length in the transverse direction is longer than the height.

To this end, the second washing tank 440 is provided with a second rotating shaft 442 rotated by the second washing motor 441 and the second rotating shaft 442 to move the washing yarn while performing second washing A plurality of blades are provided.

The second cleaning motor 441 is provided on the outer side of the second cleaning tank 440 and is connected to the second rotation shaft 442 through the second reduction gear 443.

The second reduction gear 443 is used to reduce the rotation speed of the second rotation shaft 442 by using the gear ratio with the second cleaning motor 441 and may be coaxially coupled with the second rotation shaft 442.

The blade coupled to the second rotating shaft 442 is divided into a moving blade 446 having a relatively small turning radius and a moving delay blade 444 having a larger turning radius than the moving blade 446.

The moving blade 446 is formed in a sickle shape having a predetermined radius of curvature so as to perform smooth transport of the cleaning yarn together with cleaning of the first cleaning yarn.

The moving blades 446 are disposed symmetrically with respect to each other in the diagonal direction about the second rotating shaft 442, and the ends of the moving blades 446 are positioned adjacent to the outer surface of the second rotating shaft 442.

The movement delay blade 444 is configured to delay the movement of the cleaning yarn so that the cleaning yarn can be cleaned in the second cleaning tank 440 for a longer period of time. The movement delay blade 444 has a sickle shape having a predetermined radius of curvature The second rotating shaft 442 is narrower in area than the second rotating shaft 442 and is symmetric with respect to the second rotating shaft 442 in the diagonal direction.

That is, the movement delaying blade 444 is formed to have a generally similar shape to the moving blade 446, but has a relatively large turning radius, and is installed in a direction intersecting with the moving blade 446.

Therefore, the movement delaying blade 444 and the moving blade 446, which have been installed on the second rotation shaft 442, are formed into a "X" shape as a whole (hereinafter referred to as a "blade combination" A plurality of portions are positioned so as to agitate different regions in the inner space.

In detail, the plurality of movement delaying blades 444 and the moving blades 446 are installed along the inner space as shown in FIG. 12, Are installed so as to have partial overlapping copper lines.

Also, each blade combination has different cleaning and transfer coverage to improve cleaning efficiency.

For convenience of explanation, when the right side is the first blade combination, the center is the second blade combination, and the left side is the third blade combination, the blade angle of the first blade combination and the third blade combination is 0 属 to 270 属, and the blade angle of the second blade combination is formed in the range of 180 属 to 90 属.

Accordingly, the movement of the cleaning yarn is delayed by the overlapped region in the process of passing the washing yarn by the combination of the second blades in the first blade combination and the process of passing the washing yarn by the combination of the third blades in the combination of the second blades, The cleaning efficiency can be improved.

Further, the moving delay blade 444 has a smaller contact area with the cleaning blade 446 than the moving blade 446, and a contact area is formed adjacent to the inner surface of the second cleaning tank 440.

On the other hand, the moving blade 446 is in contact with the cleaning yarn and is in contact with the cleaning yarn at a position adjacent to the second rotation axis 442, as compared with the moving delay blade 444.

In the case of the cleaning yarn located in the vicinity of the second rotation shaft 442 in the second cleaning tank 440 due to the above-described shape and installation structure, a relatively large amount of cleaning yarn is contacted by the moving blade 446, A relatively long cleaning yarn travel distance is obtained.

In the case of the cleaning yarn located on the bottom surface of the second cleaning tank 440, a relatively small amount of the cleaning yarn is contacted by the movement delaying blade 444, so that the cleaning yarn is stirred in place or a relatively short moving distance The residence time of the cleaning yarn can be sufficiently secured.

Further, in the present embodiment, in the case of the first blade combination, the end portion of the blade is cut at a certain length or short in length as shown by "A" in FIG. 12, (Including the second reduction gear 443 and the second cleaning motor 441).

In addition, although a plurality of sealing members 452 are provided inside the motor unit, a drain 454 is further provided to discharge the washing liquid and the cleaning yarn flowing into the motor unit, thereby preventing a load on the motor unit .

On the other hand, the cleaning yarn that has been cleaned in the second cleaning tank 440 is gradually moved at the same time as the cleaning, and is accommodated in the cleaning yarn discharging unit 480.

The cleaning yarn discharging unit 480 is connected to the lower end of the second cleaning tank 440. When the cleaning yarn is received by a predetermined amount or more, The cleaning liquid can be discharged together with the predetermined cleaning liquid.

The cleaning liquid that exits through the discharge valve 482 from the cleaning yarn discharging unit 480 may add a cleaning liquid to the cleaning liquid tank 460 automatically or manually to maintain the water level.

The washing liquid tank 460 is provided on the upper end of the second washing tank 440 and the lower end of the washing liquid tank 460 adjacent to the second washing tank 440 is provided with a plurality of sensing means (Not shown).

The plurality of sensing means 740 includes at least an electrical conductivity sensor 466, and it can be confirmed that effective cleaning is performed when the measured electrical conductivity is within a certain range.

The washing liquid tank 460 may further include a pH sensor 464 and a temperature sensor 462.

The pH sensor determines the cleaning efficiency through the hydrogen ion index of the cleaning liquid. When the total conductivity is determined together with the electrical conductivity sensor 466 and the temperature sensor 462, the cleaning efficiency can be more effectively determined.

In addition to the control of the second cleaning motor 441, a circulation inlet 492 through which the cleaning liquid is introduced to control the cleaning speed is further provided on one side of the first cleaning tank 420, and the circulation inlet 492 The cleaning liquid tank 460 or the external fluid supply source is connected to the circulation pump 496 so that the cleaning rate can be adjusted by circulating the cleaning liquid through the flow of the cleaning liquid.

To this end, the cleaning liquid tank 460 may further include a circulation and discharge unit 494 for discharging the cleaning liquid for circulation.

Further, in the present embodiment, the transparent windows 471, 472, 473 and 474 are respectively attached to the first cleaning tank 420, the cleaning liquid tank 460, the second cleaning tank 440 and the cleaning yarn discharging unit 480 So that the washing process can be confirmed from the outside.

Meanwhile, in the cleaning apparatus 400, two methods are provided to improve the cleaning speed.

First, in this embodiment, the cleaning speed can be improved by adjusting the rotation speeds of the first cleaning motor 421 and the second cleaning motor 441. In this case, the energy required for the cleaning operation is relatively increased do.

Therefore, in order to reduce the energy consumption, the first cleaning tank 420, the cleaning liquid tank 460 or the first cleaning tank 420 and the external fluid supply source may be connected to the circulation pump 422 without controlling the rotational speeds of the cleaning motors 421, The washing rate can be improved by connecting the circulating flow path including the circulating flow path 496 and circulating the fluid.

The sensing information of the sensing means 740 included in the cleaning device 400 is transmitted to the integrated monitoring device.

That is, information on electrical conductivity, pH, and temperature change inside the washing tank is transmitted to the integrated monitoring device and is displayed on the display. Based on the information transmitted from the integrated monitoring device, Lt; / RTI >

For this, an icon corresponding to an opening / closing operation command of the discharge valve 482 and an icon corresponding to a drive control command of the circulation pump 496 are further provided on the display.

That is, in this embodiment, at least one of the electric conductivity, pH, and temperature of the washing liquid is sensed through the sensing means 740 and transmitted to the integrated monitoring device. And a cleaning step in which the cleaning rate is controlled.

Meanwhile, the washing yarn discharged through the washing device 400 as described above is transferred to the drying device 500 and dried to produce a regenerated yarn.

FIG. 15 is a view showing an embodiment of a drying apparatus according to the present invention, and FIG. 16 is a view showing an embodiment of a drying process according to the present invention.

Referring to these drawings, in this embodiment, the drying apparatus 500 is applied with a microwave oven 520, and the conveying means for conveying the washing yarn to the drying apparatus 500 is installed in the washing apparatus 400 A drying conveyance belt 544 for guiding the discharged cleaning yarn to pass through the microwave oven 520 and a drying conveyance motor 542 and a drying conveyance pulley 546 for rotating the drying conveyance belt 544 .

That is, the washing yarn washed through the washing device 400 is dried by the microwave oven 520 along the drying conveyance belt 544 to be regenerated, and the regenerated yarn thus generated is supplied to the storing and feeding device 600, Respectively.

The drying apparatus 500 further includes sensing means 750 for sensing the humidity of the regenerated paper dried through the microwave oven 520.

The sensing means 750 is provided at a position adjacent to the outlet of the microwave oven 520 and transmits the humidity information of the dried regenerated yarn to the integrated monitoring device.

In the integrated monitoring apparatus, the humidity information of the regenerated yarn is displayed on the display. When the humidity information of the regenerated yarn is out of the set range, a control command for re-drying is transmitted to the drying apparatus 500.

The drying conveying motor 542 may be rotated in the reverse direction to control the regenerated yarn to be directed to the microwave oven 520. An icon for such control may further be provided on the display.

That is, in the present embodiment, the drying process senses the humidity around the regenerated yarn through the sensing means 750 and is transmitted to the integrated monitoring device. In accordance with the detection result, Is carried out by a drying step in which drying is determined.

Meanwhile, FIG. 17 is a view showing an embodiment of a storage and supply device which is a main part of the present invention, and FIG. 18 is a view showing an embodiment of a supplying process according to the present invention.

Referring to these drawings, the storage and supply apparatus 600 according to the present invention receives the regenerated yarn regenerated through the above-described cleaning apparatus 400 and the drying apparatus 500, And replenishes the regenerated yarn and at least the shortage of the regenerated yarn with yarn so as to correspond to the total amount of the foundry sand required in the molding apparatus 100.

In detail, the storage and supply device 600 is provided with a regenerated yarn inflow portion 620 through which the regenerated yarn fed from the drying device 500 flows, a regenerated yarn receiving portion 640 forming a receiving space for the regenerated yarn, And a yarn receiving portion 660 formed at one side of the yarn receiving portion 640 to receive the yarn.

The mixed storage portion 680 is further provided below the regenerated yarn receiving portion 640 and the yarn receiving portion 660. The mixed receiving portion 680 includes sensing means for sensing the weight of the sand supplied thereto, (760).

The mixed storage portion 680 communicates with the regenerated yarn receiving portion 640 and the yarn receiving portion 660 to receive the regenerated yarn and the yarn together and regenerate and regenerate the regenerated yarn and yarn contained therein through the sand feed means 690 And supplies it to the sand supply unit 112.

The lower ends of the regenerating yarn receiving portion 640 and the yarn receiving portion 660 are selectively in communication with the mixing receiving portion 680 through an opening and closing member The regenerated yarn stored in the yarn receiving section 640 is first filled and the weight is sensed by the sensing means 760.

The weight information of the regenerated sieves sensed as described above is transmitted to the integrated monitoring device. In the integrated monitoring apparatus, the weight of the regenerated sieves sensed through the display, the total amount of sand required in the casting apparatus 100, The shortage of regenerated yarn is also shown together.

In addition, the integrated display device controls the opening / closing member of the yarn receiving portion 660 to compensate for the shortage, and the display further includes an icon corresponding to a control command of the opening / closing member for supplying yarn do.

Therefore, when the supply amount of the regenerated yarn stored in the regenerated yarn receiving portion 640 is less than the total amount of the foundry yarn required for producing the mold, the yarn is further filled into the mixing accommodating portion 680, and the yarn accommodating portion 660 Mixed sand of the filled regenerated yarn and yarn is supplied to the molding apparatus 100 through the sand supplying means 690.

That is, in the present embodiment, the weight of the sand to be supplied to the molding apparatus 100 is sensed through the sensing means 760 and transmitted to the integrated monitoring apparatus, and the integrated monitoring apparatus And a storage and supply step in which the input amount of the yarn is controlled.

As a result, the present invention recovers waste sand recovered directly from the production site of the casting and supplies the regenerated yarn to the raw material for producing the next casting, and when the supplied regenerated yarn satisfies the total amount of the foundry sand required The production of the mold and / or core is carried out using only regenerated yarns.

On the other hand, when the regenerator housed in the storage and supply apparatus 600 does not satisfy the total amount of the molding sand required, the yarn accommodated in the yarn accommodating portion 694 is supplied to the regenerator over a short period of time, It is possible to reduce the consumption of the yarn required to manufacture the casting.

In addition, in the present invention, it is possible to manufacture castings by improving the process environment while monitoring changes in the work environment in the pre-cast manufacturing process by using the integrated monitoring device.

100 Molding device 200 Casting device
300 ........ Desizing device 400 ......... Cleaning device
500 ........ Drying apparatus 600 ........ Storage and supply apparatus

Claims (5)

1. A casting manufacturing system for producing a casting including a molding device, a casting device, and a degassing device,
A cleaning device for cleaning at least the foundry sand and the waste sand recovered from the molding apparatus or the degreasing apparatus,
A drying device for drying the sand washed through the washing device to produce regenerated yarn; And,
And a storage and supply device for storing the regenerated yarn and supplying the regenerated yarn to the molding device,
In the molding apparatus and the cleaning apparatus,
Wherein at least a part of the movement path of the kneading yarn or the cleaning yarn is formed in the transverse direction and a plurality of blades having different shapes and turning radii are provided on the lateral movement path so as to have a certain pattern,
Wherein a closed loop process for recovering and recovering the foundry sand and the waste sand produced in the casting production system is continuously performed.
The method according to claim 1,
The molding apparatus further includes sensing means for sensing a temperature change of the molding process,
Further comprising an integrated monitoring device for receiving the temperature change information of the sensing means, showing a temperature change of the molding device according to the received temperature change information, and transmitting a control command for improving the temperature of the molding process Closed Loop Recycling Casting Manufacturing System.
3. The integrated monitoring apparatus according to claim 2,
Wherein when the temperature sensing information through the sensing means is out of the setting range, the cooling water circulation control command is transmitted along the cooling water circulation path provided in the molding apparatus.
The method according to claim 1,
The cleaning apparatus further includes sensing means for sensing a change in at least one of electrical conductivity, pH, and temperature of the cleaning liquid during the cleaning process,
An integrated monitoring device for receiving sensing information of the sensing means and showing a cleaning state of the cleaning device corresponding to the received information and transmitting a control command for improving at least one of electric conductivity, Wherein the closed-loop yarn regeneration casting system comprises a closed-loop yarn regeneration casting production system.
5. The method of claim 4,
Wherein in the integrated monitoring apparatus, when the sensed information of at least one of the electric conductivity, the pH, and the temperature exceeds the set range, a discharge restriction and a cleaning speed control command are transmitted to the cleaning apparatus.

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