KR102070182B1 - A Device for manufacturing sand mold - Google Patents

Abstract

The present invention provides a device for manufacturing a sand mold, which comprises: a transfer unit which moves with a sand mold forming frame mounted thereon; a molding sand supply unit located on a first side of the transfer unit and supplying molding sand to the sand mold forming frame; and a separator located on a second side of the transfer unit and separating the sand mold from the sand mold forming frame. The transfer unit includes: a circular table rotating about a central axis; and a plurality of holding units disposed on an upper portion of the circular table. The holding unit includes: a first support; a second support disposed to be spaced apart from the first support at a predetermined interval; and a plurality of guide rollers supported and rotated by the first support and the second support. The sand mold manufacturing device enables high efficiency manufacturing by a quick, effective and continuous automatic system for each process required for manufacturing the sand mold.

Description

A device for manufacturing sand mold

The present invention relates to a sand mold manufacturing apparatus, and more particularly, to a sand mold manufacturing apparatus which enables high efficiency manufacturing by a quick and effective continuous automatic system for each process required for the production of sand molds.

In molds used in casting, sand molds are made by hardening the foundry sand, as well as molds made by engraving metal such as steel, and heated. Background Art A shell mold or the like is used in which a mixture of sand to hardened synthetic resin particles is dropped on a preheated metal mold and solidified to form a thin shell mold.

In particular, in the case of a sand mold using a casting sand, it is inevitable to break the casting after pouring the molten metal after fixing, so that the number of castings required for production must be made. If large quantities are needed, it is natural that mass production is required in quantities that meet the required quantity of the casting.

However, the conventional facilities proposed for mass production of capital punishment have a very complicated structure, which only increases the cost of manufacturing or building a facility, and the operation or operation system is extremely passive and inefficient. There was a problem that requires a lot of work time and labor.

In this regard, Korean Patent No. 10-1232759 discloses a 'continuous automatic manufacturing apparatus and manufacturing method of a sand mold' to be produced by a continuous automation device.

1 is a schematic diagram illustrating a conventional sandpaper continuous automated manufacturing apparatus.

Referring to Figure 1, the continuous automatic manufacturing device (S) of the sand mold is a straight or 'b' type so that the mold for forming a mold (1) consisting of a pair of upper and lower, continuously and repeatedly entering and exiting the interior of the manufacturing apparatus Attached to the bottom of the lower frame (3) between the conveying unit 10 and the upper and lower sets of the sand molds (1) transferred from the conveying unit 10, the line is connected to any one of the structures Lower chamber for removing various foreign matters, including the foreign material removal unit 30 for sand molds to remove the various foreign matters, and foundry sand attached to the upper surface of the lower chamber 55 in which the mold for molding sand (1) is seated and positioned The foreign material removal unit 40 and the upper mold 2 and the lower mold 3 of the die-forming mold 1 are separated from each other and at the same time, the molds 2 and 3 can be kept separate. ) Holding part 50 holding the) and the molding sand filled in the die-forming mold 1 up and down Pressing part 60 facing firmly in the direction, press molding part supply unit 70 for supplying a sequential molding sand to the lower sand mold (3) and the upper sand mold (2), and the sand mold for molding mold ( Vibration is applied to 1) to maintain a firm fixed state by cohesive force without voids in the molding sand, and the vibration generating unit 80 having a vibrating element operated by air pressure, and a mold for manufacturing a sand mold, the upper frame (2). ) And a mold supply unit 90 for supplying a mold by repeating forward and backward between the lower mold 3.

The continuous automatic manufacturing apparatus (S) of the sand mold having the characteristics as described above provides a convenience and improved working environment in manufacturing the sand mold, but there is still a limit in increasing the yield due to the long cycle time according to the production of the product.

Korean Patent Registration No. 10-1232759

The problem to be solved by the present invention is to enable high-efficiency manufacturing of each process required for the production of sand molds by a quick and effective continuous automatic system, and at the same time establish a more active organic interworking system between the processes to improve productivity and molding quality. It is an object of the present invention to provide a sand-making apparatus that can greatly contribute to the increase.

Still another object of the present invention is to manufacture a sand mold according to the automation without manual work even for a relatively large sand mold, thereby reducing the occurrence of scattering dust and at the same time significantly reducing the safety accidents according to the sand mold manufacturing apparatus In providing.

The objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above-mentioned problems, the present invention comprises a transfer unit is seated and moved to the sand mold; A foundry sand supply unit located on a first side of the conveying unit and configured to supply a foundry sand to the sand mold; And a separating table positioned on a second side of the conveying part, the separating part separating a sand mold from the sand mold, wherein the conveying part rotates about a central axis. And a plurality of mounting portions disposed on an upper portion of the circular table, wherein the mounting portion comprises: a first support; A second support disposed spaced apart from the first support at a predetermined interval; And a plurality of guide rollers supported and rotated by the first support and the second support.

In addition, the present invention, the transfer unit, the sensor reference portion which is located corresponding to each of the plurality of mounting portions, the sensor reference portion is a bar-shaped body portion; A fastening hole located in a predetermined region of the body portion; And a fastening means inserted into the fastening hole to fix the body part to the circular table.

The present invention may further include a sensor unit disposed in a first area adjacent to the outer side of the circular table of the transfer unit, wherein the sensor unit is disposed to be spaced apart from the first sensor unit and the first sensor unit at a predetermined interval. Provided is a sand mold manufacturing apparatus comprising a two-sensor unit.

Further, the present invention is the front end of the body portion is a reference point that the sensor unit operates, when the first sensor unit detects the front end of the body portion, the first sensor unit generates a deceleration signal for the rotational speed of the circular table When the second sensor unit detects the front end of the body part, the second sensor unit generates a stop signal for the rotation of the circular table, thereby rotating the circular table. It provides a sand mold production apparatus characterized in that the stop.

In addition, the present invention further includes a stopper portion disposed in a second region adjacent to the outer portion of the circular table of the transfer portion, wherein the stopper portion includes: a stopper body portion; A connection body part of which one side is supported and rotated in a predetermined region of the stopper body part; And a bearing part that is supported by the other side of the connecting part and rotates.

In addition, the present invention, the stopper body portion, the first body portion including a hollow portion; A second body part inserted into the hollow part; And an elastic body portion disposed between the first body portion and the second body portion, wherein the elastic body portion is made of a rubber material, and the first body portion and the second body portion are made of metal material. It provides a manufacturing apparatus.

The circular table may include a stopper reference part fixed to an outer region of the circular table, the stopper reference part having one side located at a first outer side of the circular table, and the other side being the first of the circular table. Provided is a sand making apparatus comprising a first reference portion located in the inner region than the outer.

The stopper reference part may include a second reference part bent at a predetermined angle from the first reference part, and one side of the second reference part may be positioned at a first outer side of the circular table, and the second reference part may be disposed at the second reference part. The other side of the reference portion provides a sand making apparatus located in the inner region than the first outer side of the circular table.

In addition, the present invention provides a sand making apparatus characterized in that the bearing portion in contact with the stopper reference portion to stop the rotation of the circular table.

According to the present invention as described above, the high-efficiency manufacturing by the rapid and effective continuous automatic system for each process required for the production of sand molds, and at the same time to establish a more active organic interlocking system between each process productivity and molding It is possible to provide a sand mold manufacturing apparatus that can greatly contribute to quality improvement.

In addition, the present invention provides a sand mold manufacturing apparatus that can reduce the occurrence of scattering dust and significantly reduce various safety accidents by making the sand mold according to the automation without manual operation even for a relatively large sand mold. can do.

1 is a schematic diagram illustrating a conventional sandpaper continuous automated manufacturing apparatus.
2 is a schematic view showing a sand mold making apparatus according to the present invention.
3 and 4 are schematic diagrams showing a conveying part according to the present invention, and FIG. 5 is a photograph showing a conveying part according to the present invention.
6 is a photograph showing a state in which the die-forming mold is seated on the mounting portion according to the present invention.
7 is a photograph showing a foundry sand supply unit according to the present invention.
8 is a photograph showing a separation part according to the present invention.
9 is a photograph showing a sensor unit according to the present invention.
10 is a photograph showing a stopper part according to the present invention.
It is a top view which shows the stopper main body part which concerns on this invention.
12 is a photograph showing a stopper reference unit according to the present invention.
Fig. 13 is a photograph showing the arrangement of the sensor portion and the stopper portion according to the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms, and only the present embodiments make the disclosure of the present invention complete, and those of ordinary skill in the art to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Regardless of the drawings, like reference numerals refer to like elements, and “and / or” includes each and every combination of one or more of the items mentioned.

Although the first, second, etc. are used to describe various components, these components are of course not limited by these terms. These terms are only used to distinguish one component from another. Therefore, of course, the first component mentioned below may be the second component within the technical spirit of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and / or “comprising” does not exclude the presence or addition of one or more other components in addition to the mentioned components.

Unless otherwise defined, all terms used in the present specification (including technical and scientific terms) may be used in a sense that can be commonly understood by those skilled in the art. In addition, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are specifically defined clearly.

The spatially relative terms " below ", " beneath ", " lower ", " above ", " upper " It can be used to easily describe the correlation of a component with other components. Spatially relative terms are to be understood as including terms in different directions of components in use or operation in addition to the directions shown in the figures. For example, when flipping a component shown in the drawing, a component described as "below" or "beneath" of another component may be placed "above" the other component. Can be. Thus, the exemplary term "below" can encompass both an orientation of above and below. The components can be oriented in other directions as well, so that spatially relative terms can be interpreted according to the orientation.

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

2 is a schematic view showing a sand mold making apparatus according to the present invention.

Referring to FIG. 2, the sand mold manufacturing apparatus 100 according to the present invention includes a transfer part 200 in which a sand mold (not shown) is seated and moved; A foundry sand supply unit (110) positioned on a first side of the conveying unit (200) and configured to supply a foundry sand to the sand mold (not shown); And a separating part 120 positioned at a second side of the transfer part 200 to separate the sand mold from the sand mold.

That is, in the sand mold manufacturing apparatus 100 according to the present invention, a molding sand is supplied from the foundry sand supply unit 110 to the mold for molding sand, and the mold for molding sand fed with the foundry sand is along the conveying part 200. In this case, in the process of transferring the mold for forming a sand mold along the transfer part 200, the foundry sand is solidified to form the sand mold.

At this time, the foundry sand, sand, surfactants, inorganic binders, etc. may be mixed and configured, which corresponds to the obvious in the art, a detailed description of the foundry sand will be omitted below.

Meanwhile, as an example of the foundry sand, reference may be made to Korean Patent Registration No. 10-1622494. However, the present invention does not limit the type of the foundry sand.

In addition, when the molding sand supplied to the mold for forming the sand is solidified to form a sand mold, it is necessary to separate the sand mold from the mold for sand molding, and in this case, the mold for molding the sand mold in the separating part 120 From the sandpaper.

Separation of the sand mold from the mold for sand molding corresponds to the obvious matters in the art, and thus a detailed description of the separation part will be omitted.

On the other hand, as an example of the separation unit 120 may refer to Japanese Patent No. 3138895, but the type of the separation unit is not limited in the present invention.

Hereinafter, the sand mold manufacturing apparatus 100 according to the present invention will be described in more detail.

3 and 4 are schematic views showing a conveying unit according to the present invention, and FIG. 5 is a photograph showing a conveying unit according to the present invention.

At this time, FIG. 4 is a view for explaining a driving unit located in the center of the transfer unit with the cover removed from the center of the transfer unit, as compared with FIG. 3.

3 to 5, the transfer part 200 according to the present invention includes a circular table 210 rotating based on a central axis; It includes a plurality of mounting portion 220 is disposed on the upper portion of the circular table (210).

In this case, although the number of the mounting portions 220 is illustrated as eight, the number of the mounting portions 220 is not limited in the present invention.

More specifically, the holder 220 is a first support (221a); A second support 221b spaced apart from the first support 221a by a predetermined interval; And a plurality of guide rollers 222 supported and rotated by the first support 221a and the second support 221b.

In this case, the number of the guide rollers 222 is illustrated as seven, but the number of the guide rollers 222 is not limited in the present invention.

In addition, the first support 221a and the second support 221b are disposed in a first direction, for example, in a vertical direction, and the plurality of guide rollers 222 are in a second direction, for example, horizontally. Can be arranged in a direction.

In this case, the mold for molding the sand is seated on the guide roller 222 of the mounting part 220, and the mold for molding the sand seated on the guide roller 222 is the first support 221a and the second. It can move in a first direction, for example, a vertical direction, which is an arrangement direction of the support 221b.

6 is a photograph showing a state in which the die-forming mold is seated on the mounting portion according to the present invention.

As shown in FIG. 6, various forms of sand-forming molds 300 are seated on the guide roller 222 of the mounting portion 220 described above, so that the first support 221a and the second support 221b. ) Can be moved in the arrangement direction.

 On the other hand, the height of the first support (221a) and the second support (221b) is configured to be higher than the height of the guide roller 222, the mold for forming the sand mold on the guide roller 222, It is possible to prevent the sand molds from leaving in a direction perpendicular to the arrangement direction of the first support 221a and the second support 221b, for example, in a horizontal direction.

That is, when the sand mold is mounted on the guide roller 222, the sand mold is formed in a direction perpendicular to an arrangement direction of the first support 221 a and the second support 221 b. For example, the first support 221a and the second support 221b may be moved in the arrangement direction without being separated in the horizontal direction.

3 to 5, the transfer part 200 according to the present invention includes a first mill pin part 230 positioned in an area corresponding to the foundry sand supply part 110; And a second mill pin part 240 positioned in a region corresponding to the separation part 120.

The first mill pin unit 230 may push the mold for forming a sand mold seated on the upper portion of the mounting portion located in the region corresponding to the foundry sand supply unit 110 toward the foundry sand supply unit 110, and the second mill pin unit The 240 may push the mold for forming a sand mold seated on the upper part of the mounting part located in the region corresponding to the separating part 120 toward the separating part 120.

3 to 5, the transfer unit 200 according to the present invention includes a sensor reference unit 250 positioned to correspond to the plurality of mounting units 220, respectively.

The sensor reference unit 250 is provided to provide a reference point for the sensor unit 400 to be described later, the drawing is shown as eight sensor reference unit 250, this is a plurality of the mounting portion ( It may vary depending on the number of 220, it is not limited to the number of the sensor reference unit 250 in the present invention.

More specifically, the sensor reference unit 250 includes a body portion 251 of the bar shape; A fastening hole 253 positioned in a predetermined region of the body portion 251; And fastening means 251a and 251b inserted into the fastening holes 253 to fix the body 251 to the circular table 210.

The fastening means (251a, 251b) may be configured in plural as shown in the figure, it is possible to use a known bolt, therefore, in the present invention does not limit the number and type of the fastening means.

At this time, the fastening hole 253 may be formed long in the longitudinal direction of the body portion 251, through which, it is easy to change the position where the body portion 251 is fixed to the circular table 210 Can be.

That is, as will be described later, in the present invention, the front end of the body portion 251 is a reference point for operating the sensor unit 400 to be described later, the fastening means is inserted into the fastening hole 253 formed long According to the position, the reference point, that is, the position of the tip portion of the body portion 251 can be easily changed.

3 to 5, the transfer unit 200 according to the present invention includes a drive unit 270 positioned at the center of the transfer unit.

The driving unit 270 is configured to rotate and stop the circular table 210. For example, the driving unit 270 may be configured as a motor unit and a reduction device, but the type of the driving unit is not limited in the present invention. Under the condition that the cylindrical table can be rotated and stopped, the driving unit according to the present invention can be variously configured.

7 is a photograph showing a foundry sand supply unit according to the present invention.

Referring to FIG. 7, the casting sand supply unit 110 according to the present invention may include a storage tank unit for storing the casting sand and a supply unit for supplying the casting sand stored in the storage tank unit to the sand mold. Since the foundry sand supply unit 110 is obvious in the art, the following detailed description will be omitted, and therefore, the present invention does not limit the configuration of the foundry sand supply unit.

8 is a photograph showing a separation part according to the present invention.

As described above, when the foundry sand supplied to the sand mold is solidified to form a sand mold, it is necessary to separate the sand mold from the sand mold, and at this time, the sand mold is separated from the sand mold 120. The sand mold is separated from the mold.

Separation of the sand mold from the mold for sand molding corresponds to the obvious matters in the art, and thus a detailed description of the separation part will be omitted.

On the other hand, as described above, as an example of the separation unit 120, reference may be made to Japanese Patent No. 3138895, but the type of the separation unit is not limited in the present invention.

Hereinafter, the sensor part and the stopper part of the sandpaper manufacturing apparatus according to the present invention will be described.

9 is a photograph showing a sensor unit according to the present invention.

Referring to FIG. 9, the sand mold manufacturing apparatus according to the present invention further includes a sensor unit 400 disposed in a first region adjacent to an outer side of the circular table 210 of the transfer unit 200.

The sensor unit 400 includes a first sensor unit 450 and a second sensor unit 420 spaced apart from the first sensor unit 450 by a predetermined interval.

In this case, the first sensor unit 450 corresponds to a sensor unit for generating a deceleration signal with respect to the rotational speed of the circular table 210, and the second sensor unit 420 corresponds to the circular table 210. Corresponds to the sensor unit for generating a stop signal for rotation.

Meanwhile, as in FIGS. 3 to 5, the transfer part 200 according to the present invention includes a sensor reference part 250 positioned to correspond to each of the plurality of mounting parts 220.

The sensor reference unit 250 is to provide a reference point for the sensor unit 400 to operate, the sensor reference unit 220 is a bar-shaped body portion 251; A fastening hole 253 positioned in a predetermined region of the body portion 251; And fastening means 251a and 251b inserted into the fastening holes 253 to fix the body 251 to the circular table 210.

At this time, in the present invention, the front end of the body portion 251 is a reference point for the sensor unit 400 to operate, when the first sensor unit 450 detects the front end of the body portion 251, The first sensor unit 450 may generate a deceleration signal for the rotational speed of the circular table 210 to reduce the rotational speed of the circular table 210, and further, the second sensor unit 420. ) Detects the front end of the body portion 251, the second sensor unit 420 generates a stop signal for the rotation of the circular table 210, thereby stopping the rotation of the circular table 210. You can.

The deceleration signal and the stop signal are transmitted to the above-described driving unit 270 through a separate control unit, so that the driving unit 270 slows down the rotational speed of the circular table 210 or the circular table ( The rotation of 210 may be stopped.

On the other hand, as described above, the sand mold manufacturing apparatus 100 according to the present invention, the molding sand is supplied from the foundry sand supply unit 110 to the mold for molding sand, the mold for molding sand supplied with the molding sand is the transfer unit It is moved along the (200), in this case, in the process of the sand mold forming frame is transported along the transfer unit 200, the molding sand is solidified, thereby forming the sand mold.

In addition, when the molding sand supplied to the mold for forming the sand is solidified to form a sand mold, it is necessary to separate the sand mold from the mold for sand molding, and in this case, the mold for molding the sand mold in the separating part 120 From the sandpaper.

In the case of the sand mold, such that the circular table is rotated in a state of being seated on an upper portion of the holder, and is transferred to the separating part 120, and at this time, a sand mold is formed to be solidified. When the die-shaped mold is seated on the upper part of the mounting part and transferred to the area where the separation part 120 is disposed, the second mill pin part 240 corresponds to the separation part 120. A sand mold for forming the sand seated on the upper portion of the mounting portion can be pushed toward the separation unit 110.

Accordingly, it is necessary to stop the circular table in a state where the position of the mounting portion and the position of the separating portion are exactly the same, and accordingly, in the present invention, the first sensor portion 450 may be formed of the body portion 251. When the front end portion is detected, the first sensor unit 450 may generate a deceleration signal for the rotational speed of the circular table 210 to reduce the rotational speed of the circular table 210. When the second sensor unit 420 detects the front end of the body part 251, the second sensor unit 420 generates a stop signal for the rotation of the circular table 210, the circular table ( The rotation of 210 may be stopped.

That is, in the case of the conveying part according to the present invention, the weight becomes very large, and when the circular table is stopped immediately without slowing down the rotation speed of the circular table, it is difficult for the circular table to stop accurately at a desired position. Therefore, in the present invention, after the rotational speed of the circular table is decelerated through the first sensor unit, it is preferable to stop the rotation of the circular table through the second sensor unit.

10 is a photograph showing a stopper part according to the present invention.

Referring to FIG. 10, the sand making apparatus according to the present invention further includes a stopper part 500 disposed in a second region adjacent to an outer side of the circular table 210 of the transfer part 200.

The stopper part 500 includes a stopper body part 510; A connector body 520 having one side supported on a predetermined region of the stopper body 510 and rotating; And a bearing part 530 supported on the other side of the connecting part 520 to rotate.

 In addition, the stopper 500 includes a first plate 550 fixed to the ground; A second plate 540 fixed to the first plate 550 and protruding from the ground; And a fixing part 560 for fixing the stopper body part 510 to the second plate 540.

That is, the stopper body 510 may be fixed to a second area adjacent to the circular table 210 of the transfer part 200 through the first plate, the second plate, and the fixing part. The bearing part 530 is supported by the stopper body part 510 through the connecting part 520, and the bearing part 530 contacts the predetermined area of the circular table, thereby rotating the circular table. Can be stopped.

It is a top view which shows the stopper main body part which concerns on this invention.

Referring to Figure 11, the stopper body portion according to the present invention, the first body portion 511 including a hollow portion 512; A second body portion 513 inserted into the hollow portion 512; And it may include an elastic body portion 514 disposed between the first body portion and the second body portion.

In this case, the elastic body 514 may be made of a rubber material, the first body portion 511 and the second body portion 512 may be made of a metal material.

On the other hand, one side of the connecting portion 520 is supported by a predetermined region of the stopper body portion 510 is rotated, more specifically, one side of the connecting portion 520 is the second body portion 513 Is fixed to the, when a predetermined force is applied to the bearing portion 530, the second body portion 513 is in a rotational motion.

At this time, in the case of the elastic body portion 514, the second body portion 513 is opposed to the force to rotate, thereby suppressing the rotation of the second body portion 513, this suppressing force The bearing part 530 may be transferred to the bearing part 530 to stop the rotation of the circular table by contacting a predetermined area of the circular table.

On the other hand, the reason for having the stopper portion as described above in the present invention is as follows.

As described above, in the present invention, it is necessary for the circular table to stop in the state where the position of the mounting portion and the position of the separating portion are exactly the same, and accordingly, in the present invention, the first sensor portion 450 is the body. When detecting the front end of the part 251, the first sensor part 450 may generate a deceleration signal with respect to the rotational speed of the circular table 210, thereby reducing the rotational speed of the circular table 210. In addition, when the second sensor unit 420 detects the front end of the body portion 251, the second sensor unit 420 generates a stop signal for the rotation of the circular table 210 by The rotation of the circular table 210 may be stopped.

In this case, the deceleration signal and the stop signal may be transmitted to the driving unit as described above to decelerate or stop the circular table. In this case, the driving unit, for example, the gear unit of the reduction device and the circular table. When the gear unit is rotated and the deceleration device is decelerated, the circular table is decelerated, and when the deceleration device is stopped, the circular table is also stopped.

Of course, when the gear unit of the reduction unit and the gear unit of the circular table is rotated, when the reduction unit rotates, it is natural that the circular table rotates.

However, when the gear portion of the reduction gear and the gear portion of the circular table are rotated in engagement, the size of the gear portion of the reduction gear and the gear portion of the circular table do not coincide (the size of the gear portion of the reduction gear is equal to that of the circular table). Smaller than the size of the gear portion), a certain distance between the gear portion of the reduction gear and the gear portion of the circular table is generated.

Due to the clearance of the fixed interval, even when the deceleration device is stopped, the circular table is further rotated by the law of inertia by the clearance of the constant interval, so that the circular table is more than the position where the circular table should stop. Rotation causes the round table to stop.

In this case, as described above, since the driving part is located in the center of the transfer part, more specifically, in the center of the circular table, the clearance of a predetermined interval generated in the center of the circular table does not correspond to a very large gap.

However, the spacing of a certain interval occurring in the center of the circular table, the greater the impact from the center of the circular table to the outer portion of the circular table, which is, after all, than the position where the circular table should stop As the circular table stops further, the position of the mounting portion on which the mold for forming a sand mold including the sand mold formed by solidification of the molding sand is seated and the separation unit 120 do not coincide with each other.

Therefore, in the present invention, by stopping the rotation of the circular table through the stopper, it is possible to prevent the circular table from being stopped by rotating more than the position where the circular table should be stopped.

To this end, the operation of the stopper part starts to operate after the rotation speed of the circular table is reduced by operating the first sensor part, and the second sensor part is operated to rotate the circular table, more specifically, the driving part. It is preferable to operate until after rotation has stopped.

To this end, in the present invention, the circular table according to the present invention includes a stopper reference part 260 fixed to an outer area of the circular table, wherein the stopper reference part 260 is a predetermined area of the plurality of mounting parts. It is characterized in that located at each.

12 is a photograph showing a stopper reference unit according to the present invention.

Referring to FIG. 12, the stopper reference unit 260 according to the present invention has one side positioned at a first outer side of the circular table, for example, the outermost side, and the other side is located at an inner region than the first outer side of the circular table. The first reference part 261 is located.

In this case, the bearing part 530 may stop the rotation of the circular table by contacting a predetermined area of the circular table, and the bearing part 530 contacts the first reference part 261. The stopper part may stop the rotation of the circular table.

More specifically, as described with reference to FIG. 10, one side of the connector 520 is supported by a predetermined region of the stopper body 510 to rotate. One side of the connector 520 is the second. The second body 513 is fixed to the main body 513 and the second body 513 is rotated when a predetermined force is applied to the bearing 530.

In this case, when a predetermined force is applied to the bearing part 530, the force is applied while the bearing part 530 starts to contact the first reference part 261.

In this situation, in the case of the elastic body portion 514, the second body portion 513 has a counter action to the force to rotate, thereby suppressing the rotation of the second body portion 513, this suppression The force is transmitted to the bearing part 530, and the bearing part 530 stops rotation of the circular table by contacting a predetermined area of the circular table, that is, the first reference part 261. Can be.

On the other hand, as described above, the operation of the stopper portion starts to operate after the rotation speed of the circular table is decelerated by the first sensor unit, and the second sensor unit is operated to rotate the circular table, more specifically. It is preferable to operate until after the rotation of the drive unit is stopped.

To this end, in the present invention, in the first reference unit, the other side of the first reference unit is disposed so that the bearing side and the other side of the first reference unit come into contact with each other after the first sensor unit is operated. One side of the unit is preferably arranged such that the bearing unit and one side of the first reference unit are in contact with each other even after the second sensor unit is operated.

A position where one side of the bearing portion 530 and the first reference portion 261 in FIG. 10 contact each other indicates a time point at which the second sensor portion is operated. As shown in FIG. 10, the first reference portion One side may check that the bearing part and one side of the first reference part are arranged to contact each other even after the second sensor part is operated.

12, the stopper reference unit 260 according to the present invention includes a second reference unit 262 arranged to be bent at a predetermined angle, for example, vertically, from the first reference unit. In this case, one side of the second reference unit may be located at a first outer side of the circular table, for example, the outermost side, and the other side of the second reference unit may be located at an inner region than the first outer side of the circular table.

In the case of the second reference portion 262, the secondary reference portion 261 serves to support the first reference portion 261, and a large force acts on the first reference portion 261 by the bearing part. By supporting the first reference portion through the second reference portion, it is possible to prevent the first reference portion from being separated from the circular table.

Fig. 13 is a photograph showing the arrangement of the sensor portion and the stopper portion according to the present invention.

As shown in FIG. 13, the sensor unit 400 and the stopper unit 500 may be disposed in the first region and the second region adjacent to the outside of the circular table 210 of the transfer unit 200, respectively. In FIG. 13, the sensor unit 400 and the stopper unit 500 are disposed to be adjacent to each other. However, in the present invention, the positions of the sensor unit 400 and the stopper unit 500 are shown. It is not limiting.

 According to the present invention, high-efficiency manufacturing can be performed by the continuous and automatic system for the quick and effective process required for the production of sand molds, and a more active organic interworking system is established between the processes to greatly increase productivity and molding quality. It is possible to provide a sand making apparatus that can contribute.

In addition, the present invention provides a sand mold manufacturing apparatus that can reduce the occurrence of scattering dust and significantly reduce various safety accidents by making the sand mold according to the automation without manual operation even for a relatively large sand mold. can do.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. You will understand that there is. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

Claims (9)

delete delete delete delete A transfer unit to which the sand mold is seated and moved;
A foundry sand supply unit located at a first side of the conveying unit and configured to supply a foundry sand to the sand mold; And
Located on the second side of the transfer portion, and includes a separation unit for separating the sand mold from the sand mold;
The conveying unit is a circular table that rotates about the central axis; And a plurality of holders disposed on the circular table,
The mounting portion first support; A second support disposed spaced apart from the first support at a predetermined interval; And a plurality of guide rollers supported and rotated by the first support and the second support,
And a stopper part disposed in a second area adjacent to an outer side of the circular table of the transfer part.
The stopper part may include a stopper main body part; A connector body having one side supported and rotated in a predetermined region of the stopper body part; And a bearing part which is supported on the other side of the connecting part and rotates. The method of claim 5, wherein
The stopper body portion may include a first body portion including a hollow portion; A second body part inserted into the hollow part; And an elastic body disposed between the first body and the second body,
The elastic body portion is made of a rubber material, the first body portion and the second body portion, the sand making apparatus, characterized in that made of a metallic material. The method of claim 5, wherein
The circular table includes a stopper reference part fixed to an outer region of the circular table,
Wherein the stopper reference portion, the one side is located on the first outside of the circular table, the other side of the sand mold manufacturing apparatus including a first reference portion located in the inner region than the first outside of the circular table. The method of claim 7, wherein
The stopper reference part includes a second reference part bent at a predetermined angle from the first reference part,
One side of the second reference portion is located on the first outer side of the circular table, the other side of the second reference portion is a sand mold manufacturing apparatus located in the inner region than the first outer side of the circular table. The method of claim 7, wherein
The bearing portion is in contact with the stopper reference portion, sand mold manufacturing apparatus characterized in that to stop the rotation of the circular table.

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