KR102183565B1 - Casting system of two cavity type - Google Patents

Abstract

The present invention relates to a low pressure casting system which manufactures castings by injecting molten metal into casting molds and hardening the molten metal and, more specifically, to a two-cavity-type low pressure casting system provided with an automatic aluminum wheel inspection means, the casting system which is of a two cavity type enabling two castings to be cast concurrently, is provided with an automatic inspection means automatically inspecting whether the formed castings are defective and the state of a lower mold of the casting molds through photographing and analysis, and senses a gap in combined molds to prevent the occurrence of defects in the castings. A two-cavity-type low pressure casting system provided with an automatic aluminum wheel inspection means according to the present invention comprises: a bottom plate on which two molds are mounted; a molten metal furnace supplying molten metal into the two molds; a catcher unit receiving and transferring the aluminum wheel castings molded in the molds; and an automatic inspection means including a camera photographing the lower mold of the casting molds from which the castings are separated and a camera photographing the castings transferred by the catcher unit.

Description

Two cavity type low pressure casting system equipped with automatic aluminum wheel inspection means {Casting system of two cavity type}

The present invention relates to a low-pressure casting system for manufacturing a casting by injecting and solidifying molten metal into a mold, and more specifically, it is a two-cavity type capable of casting two castings at the same time, and whether or not the cast product is defective and the mold Two cavity equipped with automatic inspection means for automatically inspecting the lower mold condition of the body by photographing and analyzing the condition of the molded mold, and automatic inspection means for aluminum wheels that can prevent the occurrence of defects in the cast by detecting the gap between the molded mold. It relates to a low-pressure casting system.

Products such as aluminum wheels for automobiles are generally cast using a casting machine.

The casting machine uses a mold, a molten metal furnace containing molten metal molten metal (generally referred to as a'holding furnace' logo), a bottom plate mounted on the molten metal furnace and on which the mold is mounted, and compressed air through the molten metal furnace. It comprises a molten metal supply unit for injecting the molten metal to be filled into the inside of the mold.

As the prior art for the casting machine, registered utility model No. 20-0408795 "Aluminum Wheel Low Pressure Casting Device", Registered Patent No. 10-0832248 "Aluminum Wheel Casting Device", Registered Patent No. 10-1808336 "Molten Metal by Tilting Casting A forging casting machine and its casting method" and the like have been disclosed.

The casting machine according to the prior art has low productivity by casting one casting product at a time.

The molten metal in the furnace is at a high temperature of about 750 degrees, and the work of replacing and installing the mold on the bottom plate placed on the furnace is difficult and the work of the worker is a great task.

In the casting machine according to the prior art, the work of fixing the lower mold of the mold on the hot bottom plate by bolting it with bolts was performed. The temperature around the bottom plate and the mold that is placed on the hot molten metal furnace is about 250 degrees Celsius, and the work of fastening the mold to the bottom plate is a difficult task that requires high level of function, patience, and sweat.

In a two-cavity type low-pressure casting machine equipped with two sets of molds on a bottom plate as in the present invention, it is more difficult to perform a fastening operation for simultaneously replacing two sets of molds.

Castings in a high temperature state taken out of the mold are inspected at the site and processed by separating good and defective products.

In general, the inspection of the quality of cast products is performed manually by a worker. Castings taken out of the mold emit high-temperature heat, so the inspection environment is poor and there is a risk of safety accidents. In addition, the operator has to rotate and turn over the castings in high temperature to inspect the castings everywhere, and the laborer has to repeat hundreds to thousands of times a day to rotate and turn over the castings produced in a day. It is an extreme work.

Therefore, for preventing safety accidents and for quick and accurate inspection, there is a need for inspection means for automatically inspecting the quality of the castings by looking at the surface conditions of the castings and the lower molds of the molds, but in the prior art, automatic inspection means is not yet provided.

In order to remove impurities from the molten metal injected into the mold, a filter ball is inserted into the lower mold. As the molten metal injected into the sprue passes through the filter ball, impurities are attached to the filter ball and removed.

For reference, the filter ball is attached to the cast product and separated from the mold, and is punched and separated from the cast product in the post-processing process of the cast product.

Filter balls are put into the sprue every time a cast product is cast, and the manual work that an operator puts hundreds of times a day in a high temperature environment is dangerous and laborious.

In general, filter balls are made into a ball shape by gluing stainless wires together by hand. While stainless wires are easily lumped together, they are weak and easily deformed. So, if filter balls are piled up during transportation or storage, the filter balls located underneath are deformed by the load, and the shape of the filter balls is deformed. Occurs.

If you repeat the casting of the cast product, the residue (solidified molten metal) sticks to the inner surface of the mold little by little, and when the sticking residue increases, a gap is created in the consolidation of the mold, and the molten metal injected into the mold flows out into the gap of the mold. There is a burr in the casting. Burr causes the addition of a removing process in post-processing, and becomes a factor that deteriorates the quality of the casting.

Workers need to remove foreign substances and small aluminum grains that are stuck to the joint part of the mold and the inner surface of the mold, and the discovery of the sticking remains is generally known only after seeing burrs in the casting. In other words, the occurrence of burrs cannot be known in advance, and it is not possible to prevent them, so it is a reality that the treatment is repeated with great effort and time.

The present invention is an invention conceived to solve the problem of the low-pressure casting system according to the prior art, and by installing two sets of molds on the bottom plate on the molten metal furnace, two castings are simultaneously casted, resulting in a breakthrough in productivity. In the process of separating and transferring the cast product from the mold by means of the catcher unit to prevent safety accidents, improve the speed and accuracy of the inspection, and to inspect the state of the cast product's upper and lower mold using automatic inspection means such as a camera. A two-cavity equipped with an aluminum wheel automatic inspection means that can detect and remove in advance foreign substances, particles, and remnants, etc., when filter balls are automatically inserted into the sprue, and before a gap is created in the joint part of the mold It aims to provide a low-pressure casting system.

A two-cavity type low-pressure casting system equipped with an automatic aluminum wheel inspection means according to the present invention according to the present invention for achieving this object is

A bottom plate on which two molds are mounted;

A molten metal furnace for supplying molten metal to the two molds;

A catcher unit receiving and transferring the cast aluminum wheel cast from the mold;

And an automatic inspection means including a camera for photographing the lower mold of the mold from which the cast product is separated, and a camera for photographing the cast product transferred by the catcher unit.

And the automatic inspection means

A transparent plate provided on the transfer member of the catcher unit and on which the cast product is placed,

A lower camera for photographing the lower side of the cast product through the transparent plate,

An upper camera for photographing the upper side of the cast product,

A lower type camera provided under the transfer member to photograph the inside of the lower mold of the mold from which the cast product is separated,

A rotating unit for rotating the transparent plate in the transfer member,

A protective plate that opens or covers an upper portion of the lower camera as the transparent plate is transferred by the transfer member;

It characterized in that it comprises an air nozzle for forming an air curtain by spraying high-pressure air in front of the upper and lower cameras,

A filter ball supply unit for supplying a filter ball;

A filter ball input unit provided on the transfer member of the catcher unit and for introducing the filter ball supplied by the filter ball supply unit into a sprue formed in the lower mold of the mold; further comprising,

The filter ball is made by aggregating stainless wire, and aluminum is coated on the surface to maintain the ball shape,

The mold is composed of an upper mold, a lower mold and a side mold,

A first cylinder unit and a second cylinder unit for moving the upper mold and the side mold forward and backward in a vertical direction and a horizontal direction, respectively, and incorporated into a lower mold mounted on the bottom plate; and

The first cylinder unit, the second cylinder unit, or the first cylinder unit and the second cylinder unit are provided with a gap detection sensor that detects the advance distance of the merged upper mold and checks the gap of the merged mold.

The two-cavity type low-pressure casting system equipped with the automatic inspection means for aluminum wheels according to the present invention has high productivity by casting two castings at the same time, and automatically inspects the quality of the castings through the automatic inspection means, resulting in a safety accident for the operator. The process of separating and discharging the cast product into the mold is efficient because the filter ball is automatically injected into the sprue through the input means, and the filter ball is coated with aluminum to prevent deformation of the shape. And, the cylinder unit is equipped with a gap detection sensor, so when a gap occurs in the mold, it immediately informs the operator and removes the remains attached to the mold, thereby preventing the occurrence of burrs in the cast product. It is a two cavity type low pressure casting system,

As a system that can check the status of the casting site of aluminum wheel castings in real time in the central control room (management room), and check the quality of the castings, as an industrial low-pressure casting system suitable for the 4th industrial revolution and the 5G era.

It is a very useful invention for industrial development.

1 is a view showing a hardware structure as a main part as an automatic inspection means in a two-cavity type low-pressure casting system equipped with an aluminum wheel automatic inspection means according to the present invention.
Figure 2 is a block diagram of a software structure as a main part of the automatic inspection means in the two-cavity type low pressure casting system equipped with an aluminum wheel automatic inspection means according to the present invention.
3 is a front view of a two cavity type casting system according to the present invention.
Figures 4a, b is a view showing two embodiments of the upper type fastening unit, respectively.
5 is a plan view and a front view showing a side type fastening unit and a lower type fastening unit on a bottom plate.
6 is a plan view and a front view showing a side-type fastening unit as a main part.
7 is a plan view and a front view showing a lower type fastening unit as a main part.
8 is a view showing a tilting fastening unit.

Hereinafter, a two-cavity type low-pressure casting system having an automatic aluminum wheel inspection means according to the present invention will be described in more detail with reference to the drawings.

Prior to a more detailed description of the two-cavity type low-pressure casting system equipped with the automatic aluminum wheel inspection means according to the present invention,

The present invention will be described in detail in the text of the bar, implementation (態樣, aspect) (or embodiment) that can apply various changes and can have various forms. However, this is not intended to limit the present invention to a specific form of disclosure, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

In each drawing, the same reference numerals, in particular the number of tens and ones, or the same number of tens, ones, and alphabet indicate members having the same or similar functions, and unless otherwise specified, each of the drawings The member indicated by the reference number can be identified as a member conforming to these criteria.

In addition, the components in each drawing are expressed by exaggeratingly large (or thick) or small (or thin) or simplified the size or thickness in consideration of the convenience of understanding, but this limits the scope of protection of the present invention. It shouldn't be.

The terms used in the present specification are only used to describe specific embodiments (sun, 態樣, aspect) (or examples), and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as ~include~ or ~consist~ are intended to designate the presence of features, numbers, steps, actions, components, parts, or a combination thereof described in the specification, but one or more other features It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of the presence or addition.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

First, referring to Figs. 1 and 2, an automatic inspection means in a two-cavity type low pressure casting system equipped with an automatic inspection means for an aluminum wheel according to the present invention will be described.

The automatic inspection means automatically inspects whether or not the cast product 1 cast from the mold and the lower mold 13 from which the cast product is separated are defective.

Referring to FIG. 1, the hardware configuration as the automatic inspection means is a transparent plate 310, a lower camera 320, a lower camera 330, a lower camera 370, a rotating unit 340, a protective plate 350. , And an air nozzle 360.

The transparent plate 310 is mounted on the upper part of the transfer member 61 of the catcher unit 60 for receiving and transferring the cast product from the mold, and the cast product 1 is placed thereon.

The transparent plate 310 is made of a transparent material so that the lower camera 320 can see through and take a picture. The transparent plate 310 may be made of heat-resistant glass capable of withstanding high temperatures and insulating glass capable of blocking heat transmission. The transfer member 61 at the portion where the transparent plate 310 is mounted is also made of a transparent material.

An inclined alignment part 311 is formed on the edge of the transparent plate 310 so that the cast product 1 is not separated and the cast product 1 is aligned in the correct position.

The upper camera 330 and the lower camera 320 are disposed above and below the transfer member 61, respectively, to photograph the upper side and the lower side of the cast product 1. The lower camera 320 photographs the lower side of the cast product 1 through the transparent transfer member 61 and the transparent plate 310.

It is preferable that the lower camera 330 and the lower camera 320 use a high-definition, high-definition camera to enable fine reading of the cast product 1.

It is preferable that the upper camera 330 and the lower camera 320 have a tilting function to enable adjustment of the photographing direction, and have a zoom-in/zoom-out function to enlarge and photograph a portion requiring detailed inspection.

The lower type camera 370 is mounted on the lower part of the transfer member 61 to photograph the inside of the lower mold 13 when the transfer member 61 receives the cast product 11 from the upper mold 11. The lower type camera 370 mainly monitors whether the sprue formed in the lower mold 13 is blocked, and in addition, monitors whether or not a remnant of a visible size is attached or damaged on the inner surface of the lower mold 13.

The rotating unit 340 rotates the transparent plate 310 so that the entire part of the cast product 1 can be photographed by the upper camera 330 or the lower camera 320.

The rotation unit 340 includes a holder ring 341 for holding the outer circumferential surface of the transparent plate 310, and a bearing 342 for rotating the transparent plate 310 inside the holder ring 341, A rotation gear 343 engaged and coupled to an outer periphery of the transparent plate 310 and a motor 344 for rotating the rotation gear 343 may be included. In addition to this, the rotation unit 340 may have various other embodiments.

The rotation unit 340 can stop the cast 1 at a position where photographing is required while rotating the transparent plate 310 forward and reverse, and the rotation speed can be adjusted.

The protection plate 350 is disposed above the lower camera 320 and moves forward and backward to open or cover the upper portion of the lower camera 320. That is, the lower camera 320 is exposed so that the cast product 1 can be photographed, or the upper part of the lower camera 320 is covered to protect the lower camera 320 from external shock or high temperature. Such a protective plate 350 may be provided in front of the upper camera 330 as well.

It is preferable that the protection plate 350 is operated in conjunction with the transfer of the transfer member 61 of the catcher unit 60. That is, when the transfer member 61 is transferred over the lower camera 320 with the casting product 1, the protection plate 350 is opened, and when the transfer member 61 is transferred to the mold to bring the new casting product 1, the protection plate It is preferable that 350 is closed to cover the lower camera 320.

The air nozzle 360 forms an air curtain by spraying high-pressure air in front of the upper camera 330 and the lower camera 320, so that heat radiated from the high-temperature cast product 1 is transferred to the upper camera 330 and the lower camera. It is protected by preventing it from being transmitted to the camera 320. It is preferable that the air nozzle 360 is interlocked with the transfer of the transfer member 61 like the protective plate 350 to inject high-pressure air and stop the injection of air.

Referring to FIG. 2, the software configuration of the automatic inspection means includes a memory 372, a monitor 371, an artificial intelligence analysis module 373, a control unit 375, and an input unit 374.

The memory 372 stores images captured by the upper and lower cameras 330 and 320.

The monitor 371 displays an image captured by the upper camera 330 and the lower camera 320 or an image stored in the memory 372.

The artificial intelligence analysis module 373 determines the quality of the cast 1 by analyzing an image captured and transmitted by the upper camera 330 and the lower camera 320 or an image stored in the memory 372.

The artificial intelligence analysis module 373 accumulates and learns images judged as good and bad products to reduce errors in judgment of good or bad, and transmits the results of judgment of good and bad to the control room in real time, so that it can be checked and operated in real time in the control room.

The control unit 375 generally controls the automatic inspection means.

For example, when the cast product 1 is transferred by the catcher unit 60 and placed in front of the upper camera 330 and the lower camera 320, the air nozzle 360 is operated to form an air curtain, and the upper camera (330) and the lower camera (320) operate to take pictures of the cast product (1) while adjusting the shooting direction and zooming in/out, etc., and by driving the rotation unit 340, the upper camera (330) and the lower camera (320) to be able to take a picture, the quality of the casting (1) according to the judgment of the artificial intelligence analysis module (373) to inform the inspection manager of the production department to be processed, through the input unit 374 Processes input operator's command.

The automatic inspection means constituted in this way immediately inspects the hot castings separated from the mold, so that the quality inspection is quick, and the image of the mold of the cast product photographed by the camera can be monitored by the manager in a remote control room. Therefore, not only the manager, but also the customer can see the casting situation and the state of the casting product at the site, and the current and past defect rates and surface quality of the casting product can be constantly objectively checked and evaluated, and the control and management of the system can be used. Do it.

In addition, through the automatic inspection means, managers, department bookkeepers, field workers, etc. can check the casting situation in real time and take instructions and measures, and this low-pressure casting system actively utilizes the technologies of the 4th industrial revolution and 5G era. As a utilized system, casting technology can be developed to a higher level.

The catcher unit 60 moves the cast product 1 cast from the mold to an inspection site equipped with the upper camera 330 and the lower camera 320.

Referring to FIG. 1, the catcher unit 60 includes a frame 50 on which a mold is mounted, a transfer member 61 that moves between an inspection site equipped with an upper camera 330 and a lower camera 320, and the transfer It includes a driving member 63 for driving the member 61 to be transferred.

The transfer member 61 is made of a plate structure, and a transparent plate 310 on which the cast product 1 is placed is mounted on an upper portion of the front.

The transfer member 61 can move back and forth between the frame 50 with the mold and the inspection site in a sliding manner, and can move back and forth between the frame 50 and the inspection site in a rotating swing method. FIG. 1 shows a swing-type transfer member 61 in which the rear of the transfer member 61 is rotatably coupled to the post 51 so that the front moves back and forth between the frame 50 and the inspection site.

The drive member is a configuration that drives the transfer member 61 to be transferred, and a motor, a cylinder, or the like may be used.

The filter ball supply unit supplies a filter ball 3 for removing impurities from the molten metal, and the filter ball input unit inserts the filter ball 3 into a sprue (not shown) formed in the lower mold 13 of the mold.

As described above, in the prior art, the operator inserts a new filter ball 3 directly into the spout each time, but the present invention allows the filter ball 3 to be automatically inserted into the spout through the supply unit and the input unit.

The filter ball supply unit includes a hopper 411 containing the filter balls 3, an opening/closing plate 413 for opening and closing the outlet of the hopper 411, and a driver (not shown) for opening and closing the opening/closing plate 413 ), including.

The filter ball input unit is provided in the transfer member 61 of the catcher unit 60 and includes a storage container 421 for receiving and storing the filter ball 3 discharged from the filter ball supply unit, and the storage container 421. It comprises an input member for taking out the filter ball (3) and putting it into the spout of the lower mold (13). As shown in the drawing, the input member includes a discharge port 423 formed to be inclined downward from an end of the storage container 421, and an opening/closing plate for opening and closing the discharge port 423 so that the filter ball 3 is discharged to the lower mold 13 425 and a driver (not shown) for opening and closing the opening/closing plate 425. As another input member, a finger member for holding or placing the filter ball 3 and a robot arm for moving the finger member over the storage cylinder and lower mold 13 may be used, and other various embodiments are possible.

When the transfer member 61 waits underneath the catcher unit 60 to receive the cast product 1 attached to the upper mold 11, the filter ball 3 is inserted into the lower mold 13 Put into.

The filter ball 3 is a product made of a ball shape by lumping stainless wires together, and the stainless wire has a somewhat soft property, so the filter ball 3 can be easily crushed and deformed when an external force is applied. The filter ball 3 located under the hopper 411 may be crushed by the pressure pressed by the filter ball 3 above.

If the filter ball 3 is deformed, the discharge from the hopper 411 may not be smooth, or the discharge paper may not be smooth from the discharge port 423 of the storage container 421, and it may be difficult for the finger member to hold the filter ball 3 .

Accordingly, in the present invention, the filter ball 3 is prevented from being crushed by coating the surface of the filter ball 3 with aluminum to solidify it, and accordingly, the filter ball inlet unit connects the filter ball 3 to the lower mold 13 Can be injected without errors.

The gap detecting sensor 430 detects whether a gap has occurred in the combined mold.

In the mold consisting of the lower mold 13, the upper mold 11 and the side mold 15, the upper mold 11 and the side mold 15 are formed by a first cylinder unit 210 and a second cylinder unit 250, respectively. It moves back and forth in the vertical and horizontal directions toward (13) and merges or disassembles. At this time, when a gap is generated between the combined lower mold 13, the upper mold 11 and the side mold, the molten metal injected into the mold leaks through the gap, and accordingly, the cast product 1 is buried. The cause of gaps in the molded mold is that the remnants (mainly, small particles of molten metal injected into the mold and mold release agent) stick to the inner surface of the molded part.

Since the gap between the mold is generated when the upper mold 11 or the side mold 15 does not reach the distance that must be advanced for the correct combination, the gap detecting sensor 430 is used to move the upper mold 11 or the side mold forward and backward. It is provided in the first cylinder unit 210, the second cylinder unit 250, or both the first cylinder unit 210 and the second cylinder unit 250.

Referring to FIG. 3, the gap detecting sensor 430 is mounted on the post 51 of the frame 50, and the first moving plate 211 of the first cylinder unit 210 is mounted on a pressure bar ( 431) is connected. The pressure bar 431 has one end connected to the first moving plate 211 so as to rise and fall together, and the other end is disposed on the gap sensing sensor 430 so that when the first moving plate descends, the gap sensing sensor ( 430) is pressed to make it work.

The gap detection sensor 430 precisely senses the gap of the mold, and digitally displays the detected gap size to the operator.

When the gap detected by the gap detection sensor 430 exceeds the reference value, the controller notifies the manager or the worker, and the notified worker temporarily stops the casting process and removes the remnants attached to the mold in advance, and then the casting process resumes. Make it possible.

The gap detecting sensor 430 has been described and illustrated in the drawings, but may also be provided in a second cylinder unit that moves the side type forward and backward.

3 to 8, the two cavity type casting system according to the present invention includes a mold, a bottom plate 20, a tilting plate 30, a melting furnace 40, a frame 50, cylinder units, and a fastening unit. It includes, etc.

For reference, although the fastening unit and the cylinder unit are not precisely illustrated in the drawings, they are illustrated at a level without any problems in grasping and understanding their components and operation mechanisms.

The mold is composed of a lower mold (13), an upper mold (11) and a side mold (15), which are combined to form a space according to the shape of the cast product (1) therein.

The lower mold 13 is coupled to the base 14, and the base 14 is fastened to and fixed to the bottom plate 20 through the lower mold fastening unit 130.

The lower mold 13 receives the molten metal from the melting furnace 40 through the base 14, the bottom plate 20, and the tilting plate 30.

The upper mold 11 moves back and forth in a vertical direction (ie, vertical direction) through the first cylinder unit 210 mounted on the frame 50.

The first cylinder unit 210 is coupled to a cylinder 213 fixed to the frame 50 and mounted, a piston 215 that moves in and out of the cylinder 213 and moves up and down, and a lower end of the piston 215 It comprises a first moving plate 211 and a guide rod 217 coupled to the frame 50 so as to be elevating and descending to guide the elevating and descending of the first moving plate 211.

The side type 15 moves back and forth in the horizontal direction (ie, left and right) through the second cylinder unit 250 mounted on the edge of the upper surface of the bottom plate 20. The side type 15 is composed of a plurality.

The second cylinder unit 250 includes a fixed body 257 fixedly installed on the edge of the upper surface of the bottom plate 20, a cylinder 253 mounted on the fixed body 257, and the cylinder 253 It comprises a piston 255 that moves forward and backward by drawing in and out from, and a second moving plate 251 coupled to the front end of the piston 255.

The bottom plate 20 is disposed above the melting furnace 40, the lower mold 13 is mounted thereon, and provides a space in which the upper mold 11 and the side mold 15 are combined.

The tilting plate 30 is coupled to the bottom plate 20 is stacked on the top, and the other side is rotatably coupled to the melting furnace 40 so that one side is tilted by rotating the other side in the melting furnace 40 as an axis. Combined to be able to lose.

By tilting the tilting plate 30 to open the upper portion of the melting furnace 40, maintenance work inside the melting furnace 40 is possible, and the bottom plate 20 and the frame 50 combined on the tilting plate 30 The replacement work of the back becomes easy.

The molten metal furnace 40 is disposed under the bottom plate 20 and contains molten metal, that is, molten metal therein.

The frame 50 is installed on the upper side of the bottom plate 20 disposed above the melting furnace 40.

The frame 50 includes a post 51 installed from the edge of the bottom plate 20 to the upper side, and a mounting plate 53 on which the first cylinder unit 210 is mounted by connecting the posts 51 in a horizontal direction. It is made including.

The post 51 is provided with a catcher unit 60 for separating and releasing the cast product 1 cast from the mold. The catcher unit 60 rotates inward and outward along the post 51, and transfers the cast product to the inspection site in a swivel manner.

FIG. 4 shows an upper type fastening unit 110 for fastening the upper mold 11 to the first cylinder unit 210 so as to be able to move up and down by the first cylinder unit 210.

First, with reference to FIG. 4A, the upper type fastening unit 110 according to the first embodiment will be described.

The upper type fastening unit 110 according to the first embodiment includes a through pin 111, a cam block 112, and a first driving member 113.

A plurality of the through pins 111 pass through the edges of the first moving plate 211 of the first cylinder unit 210. For stable fastening, three or more of the through pins 111 are used, and the through pins 111 are preferably arranged radially at equal intervals.

The cam block 112 is provided at the lower end of the through pin 111 penetrating the first moving plate 211 and has a locking portion 112a having a long diameter and a release portion 112b having a short diameter. At this time, the upper surface of the locking part 112a is formed with a gradient in which the thickness gradually increases while going in one direction of rotation.

The first driving member 113 is provided on an upper end of the through pin 111 passing through the first moving plate 211 and rotates the through pin 111. The first driving member 113 may automatically rotate the through pin 111 using a power device such as a motor, and a lever that the user directly holds and turns may be used. Of course, the first driving member 113 may be provided with both a power device such as a motor and a manual lever.

An upper portion of the upper mold 11 is formed with a coupling portion 11a having a shorter diameter under an upper surface having a long diameter, and the through pin 111 passes through the upper side of the upper mold 11, and the cam block ( 112) is disposed next to the coupling portion 11a.

When the first driving member 113 rotates the through pin 111 in one direction, the locking portion 112a of the cam block 112 enters into the coupling portion 1a of the upper mold 11 and the coupling portion It is engaged with the lower surface of (11a). At this time, the gradient formed on the upper surface of the cam block 112 presses the lower surface of the coupling portion more strongly as it rotates to fix it.

Conversely, when the first driving member 113 rotates the through pin 111 in the other direction, the locking part 112a of the cam block 112 is separated from the coupling part 11a of the upper mold 11 and is locked. The coupling is released, and the release part 112b of the cam block 112 is disposed next to the coupling part 11a of the upper mold 11. At this time, the release part 112b does not enter the inside of the coupling part because the diameter is short.

When the first driving member 113 rotates the through pin 111 to automatically lock the upper mold 11 to the first moving plate 211 to fasten or release the fastening, the cam block 112 A limit switch may be used to detect a point that is strongly locked and a point that is released from the coupling portion 11a of the upper mold 11.

Next, referring to FIG. 4B, a description will be given of the upper type fastening unit 110A according to the second embodiment.

The upper mold 11 fastening unit according to the second embodiment penetrates the first moving plate 211 of the first cylinder unit 210, and the lower part is fixed to the upper part of the upper mold 11 and is coupled to the through bar 114 ), and a locking groove 115 formed on an upper portion of the penetrating rod 114 penetrating the first moving plate 211, and the locking groove 115 by moving forward and backward from the top of the first moving plate 211 It comprises a locking key 116 that is inserted into the locking or detachable, and a driving member 117 for moving the locking key 116 forward and backward.

The lower side of the through bar 114 is formed by protruding a stepped step 118 that is caught by contacting the lower surface of the first moving plate 211, and the upper portion of the locking groove 115 and the locking key 116 The upper part has an inclined structure. Therefore, the through bar 114 is lifted upward through the channel through which the locking key 116 is deeply inserted into the locking groove 115 so that the through bar 114 is strongly fastened to the first moving plate 211.

5 and 6 show a side type fastening unit 150 for fastening the side type 15 of the mold to the second cylinder unit 250.

The side type fastening unit 150 includes a pull-out block 151, a spring 152, a driving block 153, a second driving member 157, a connection pin 155, and the like.

The withdrawal block 151 is provided so as to be withdrawn from the inside left and right of the second moving plate 251 provided in front of the second cylinder unit 250 to the outside. The draw-out block 151 drawn out from the second moving plate 251 is inserted into a locking groove 15b formed in a vertical direction in a coupling portion 15a coupled to the outside of the side type 15.

The spring 152 elastically supports the inside of the draw-out block 151 inside the second moving plate 251 to allow the draw-out block 151 to be pulled out.

The driving block 153 is provided so as to be movable vertically from the inside of the second moving plate 251, the inclined surface 153a is formed inside, and the through hole is inside and outside the position where the inclined surface 153a is formed. (153b) is formed.

The second driving member 157 moves the driving block 153 in the vertical direction. The second driving member 157 includes a rotating body 157a rotating forward and backward, a hinge pin 157b hingedly coupled to the driving block 153 at both ends of the rotating body 157a, and the rotating body 157a. ) Comprises a rotating shaft (157c) to rotate.

One end of the connection pin 155 is connected to the lead-out block 151 and the other end passes through the through hole 153b of the driving block 153. A locking pin 156 is provided to protrude from the other end of the connection pin 155 through the through hole 153b. The locking pin 156 is caught in contact with the inclined surface 153a of the driving block 153.

When the rotating body 157a of the second driving member 157 rotates in one direction, the driving blocks 153 disposed on the left and right sides of the second moving plate 251 respectively move upward and downward, and then The connecting pin 155 is pulled inward while riding on the inclined surface of the driving block 153 so that the withdrawal block 151 is drawn into the inside of the second moving plate 251, and then the draw-out block 151 is side-shaped ( The second cylinder unit 250 and the side type 15 are disengaged from being separated from the locking groove 11b of 15).

On the contrary, when the rotating body 157a of the second driving member 157 rotates in the other direction, the driving blocks 153 on both sides move downward and upward, respectively, and then the spring 152 pushes in/out. The block 151 is drawn out of the second moving plate 251, and at this time, the locking pin 156 of the connection pin 155 moves along the inclined surface 153a of the driving block 153 to move the connection pin 155 The silver withdrawal block 151 moves to the outside, and the draw-out block 151 withdrawn from the second moving plate 251 is inserted into and caught in the locking groove 15b of the side type 15, The side type 15 is fastened to the cylinder unit 250.

The second cylinder unit 250 for moving the side type 15 back and forth in the horizontal direction includes a fixed body 257 fixed and mounted on the edge of the bottom plate 20, and an upper portion of the fixed body 257. It comprises a cylinder 253 to be mounted, and a piston 255 withdrawn from the cylinder. It is preferable to mount the cylinder 253 to the bottom plate 20 through the fixed body 257 because the surface of the bottom plate 20 is high temperature.

5 and 7 illustrate a lower mold fastening unit 130 for fastening and fixing the lower mold 13 to the bottom plate 20.

After aligning the base 14 to which the lower mold 13 is coupled in the correct position using a jig pin or the like on the bottom plate 20, it is pressed against the bottom plate 20 through the lower mold fastening unit 130 to cause electric power.

The lower type fastening unit 130 includes a pressing block 131, a forward and backward block 133, an upper elastic pin 135, a front elastic pin 136, a rear elastic pin 137, and the like.

The pressing block 131 is inserted into a guide hole 257a formed through the inside of the fixed body 257 mounted on the edge of the bottom plate 20 and can be moved forward and backward along the guide hole 257a. In front of the pressing block 131, a pressing portion 131a for pressing and fixing the upper surface edge of the base 14 on which the lower mold 13 is mounted is formed, and a retreat protrusion 131b protrudes downward at the rear. Is formed.

The forward/reverse block 133 is inserted into the guide hole 257a of the fixed body 257 and is connected to the third cylinder unit 230 to move forward and backward. A locking protrusion 133b protruding upward is formed in front of the forward/rearward block 133, and an inclined inclined surface 133a is formed on an upper surface going rearward from the locking protrusion 133b. The forward/reverse block 133 pushes the rear of the pressing block 131 to advance the pressing block 131 when moving forward, and the locking protrusion 133b moves the retracting protrusion of the pressing block 131 when moving backward. The pressure block 131 is moved backward by being hooked on 131b). And when the forward and backward block 133 moves forward, the retreat protrusion 131b of the pressing block 131 moves along the inclined surface 133a of the forward and backward block 133, so that the rear of the pressing block 131 moves upward. As a result, the front of the pressing block 131 is pressed downward, and the pressing portion 131a formed in front of the pressing block 131 presses and fixes the base 14 of the lower mold 13.

The upper elastic pin 135 is provided on the upper part of the guide hole 257a by being combined with the fixed body 257. The upper elastic pin 135 elastically supports the upper surface of the pressing block 131. Therefore, when the forward and backward block 133 moves forward and backward, the retreat protrusion 131b of the pressing block 131 moves forward and backward while riding the inclined surface of the forward and backward block 133 to perform a seesaw movement. That is, when the pressing block 131 moves forward, the front is pushed down and the rear is lifted up, while the front is lifted up and the rear is pushed down when moving backward.

The front elastic pin 136 is provided in front of the pressing block 131 to elastically support the side surface of the lower mold 13 and the base 14. The front elastic pin 136 is in contact with the base 14 of the lower mold 13 before the pressure block 131 when the pressure block 131 moves forward, so that the pressure block 131 is the base of the lower mold 13 ( 14) to absorb the impact impacting.

The rear elastic pin 137 is provided to protrude forward of the forward and backward block 133 to push the rear of the pressing block 131. The rear elastic pin 137 allows the forward and backward block 133 to gently contact and push the rear of the pressing block 131. The elastic force of the rear elastic pin 137 is stronger than that of the front elastic pin 136, and the forward and backward block 133 pushes the pressing block 131 to the end.

Figure 8a shows the tilting plate 30 is tilted to one side from the melting furnace 40, and in Figure 8b, the tilting fastening means 170 for fastening the tilting plate 30 to the top of the melting furnace 40 ) Is shown.

The tilting fastening means 170 fastens one side of the tilting plate 30 to which the other side is rotatably hinged to the melting furnace 40 by fastening it to the melting furnace 40.

The tilting fastening means 170 includes a fastening block 171, a locking pin 173, a fixing pin 175, a release pin 177, and a fourth driving member 179.

The fastening block 171 is provided on a lower surface of one side of the tilting plate 30. A hollow 171a into which the fixing pin 175 is inserted is formed in the fastening block 171.

The locking pin 173 is elastically supported by a spring 172 so as to be withdrawn from the fastening block 171 into the hollow 171a. The lower portion of the locking pin 173 has an inclined structure.

The fixing pin 175 is provided to be fixed to one side of the melting furnace 40, while being inserted into the hollow 171a of the fastening block 171, the locking pin 173 is pushed into the fastening block 171. Let it. The upper portion of the fixing pin 175 has an inclined structure so that the locking pin 173 is pushed into the fastening block 171, and a locking protrusion (175a) having a narrow width is formed at the lower portion thereof. It is engaged with the upper part of (173).

The release pin 177 is provided on one side of the molten metal furnace 40 to be elevated and lowered, so that when elevating, it advances into the hollow 171a of the fastening block 171 to fasten the locking pin 173 to the fastening block 171 ) By retracting into the inside of the locking pin 173 and the fixing pin 175 to release the locking, and when descending, the hollow (171a) in the locking pin 173 while leaving the hollow (171a) of the fastening block 171 To withdraw. A tapered taper surface 177a is formed on the upper portion of the release pin 177 to push the locking pin 173 in contact with the lifting pin. And the locking pin 173 is made in a square shape when viewed from above, and the release pin 177 is formed in a shape surrounding the circumference of the locking pin 173, so that the release pin 177 moves up and down along the locking pin 173 do.

The fourth driving member 179 automatically raises and lowers the release pin 177 using a motor or a cylinder. The fourth driving member 179 may include a lever 179a for manually raising and lowering the release pin 177 by an operator.

The two-cavity casting system according to the present invention constituted as described above is simple, quick and robust to the bottom plate 20 and the cylinder unit with the lower mold 13, the upper mold 11 and the side mold 15 of the mold without bolting. And, in particular, in the case of the lower mold 13, it is fastened to the correct position of the bottom plate 20 with a strong fastening force.

The present invention shortens the replacement time to a level of 1/10 compared to the conventional method for replacing the mold (in particular, the lower mold 13).

Although not specifically shown in the drawings, the present invention determines whether the lower mold 13, the upper mold 11, and the side mold 15 of the mold are accurately fastened and fixed in position using a limit switch, a hall sensor, an optical sensor, etc. Check by sensing, and if there is no problem as a result of checking, proceed to the next step.

In other words, the controller of the two-cavity casting system according to the present invention automatically controls the operation of fastening (locking) and releasing (unlocking) of the fastening units, and at this time, in order to prevent safety accidents of workers, the controller of each physique unit The state is sensed through various sensors (eg, limit switch, hall sensor, ultrasonic sensor, optical sensor, etc.) so that the process of fastening or disengaging of the fastening units proceeds step by step and stably. That is, when it is confirmed that the process of step 1 has been stably completed, step 2 allows the process to proceed.

When such a mold is replaced, the controller of the two-cavity casting system according to the present invention is provided with a driving circuit and a sensing circuit for fastening units to secure the operator's stability and to improve productivity through rapid and accurate replacement of the mold. do.

The two-cavity type low-pressure casting system equipped with an aluminum wheel automatic inspection means according to the present invention configured as described above incorporates augmented reality technology so that the on-site system driver wears 3D augmented reality (virtual environment) glasses and casts aluminum wheels By looking at it, you can trace and solve the cause of the problem.

In addition, system drivers, technicians, officials, etc. in the field view the screen window of the 3D augmented reality glasses and check the programmed casting process settings (e.g., molten metal temperature, pressing force, step-by-step pouring time, temperature timing and mold temperature, etc.). It can be checked and compared to the actual situation in the field to discuss and solve problems.

The present invention is a fourth industrial casting system developed for the first time in the world at present, enabling a manager, a manager, a customer, etc. to check the situation, control, troubleshoot, and immediately correct the situation at a remote location.

The present invention makes it possible to construct an aluminum wheel smart production system using a 5G communication network regardless of distance, and to automatically connect between casting machines and before and after processes.

The present invention is expected to play a large role in upgrading the field into a smart factory system by combining the photographing data of the present invention, the defect prevention sensor function, and the casting program data for future defect-free automatic production.

In the above description of the present invention, a two-cavity type low-pressure casting system having an aluminum wheel automatic inspection means having a specific shape and structure has been described with reference to the accompanying drawings, but the present invention can be variously modified and changed by those skilled in the art. And, these modifications and changes should be construed as belonging to the scope of the present invention.

11: upper type 13: lower type
14: base 15: side type
20: bottom plate 30: tilting plate
40: melting furnace 50: frame
110: upper type fastening unit 130: lower type fastening unit
150: side type fastening unit 170: tilting fastening unit
210: first cylinder unit 230: third cylinder unit
250: second cylinder unit
310: transparent plate 320: lower camera
330: upper camera 340: rotating unit
350: protective plate 360: air nozzle
370: Bottom type camera
411: hopper 421: storage bin
423: discharge port 425: opening and closing plate
430: gap detection sensor 431: pressure rod

Claims (4)

A bottom plate on which two molds are mounted;
A molten metal furnace for supplying molten metal to the two molds;
A catcher unit receiving and transferring the cast aluminum wheel cast from the mold;
Automatic inspection means including a camera for photographing the lower mold of the mold from which the cast product is separated, and a camera for photographing the cast product transferred by the catcher unit; In,

The mold is composed of an upper mold, a lower mold and a side mold,
A first cylinder unit and a second cylinder unit for moving the upper mold and the side mold forward and backward in a vertical direction and a horizontal direction, respectively, and incorporated into a lower mold mounted on the bottom plate; and
Aluminum, characterized in that the first cylinder unit, the second cylinder unit or the first cylinder unit and the second cylinder unit are provided with a gap detection sensor that detects the advance distance of the merged upper mold and checks the gap of the merged mold. Two cavity type low pressure casting system with automatic wheel inspection means. A bottom plate on which two molds are mounted;
A molten metal furnace for supplying molten metal to the two molds;
A catcher unit receiving and transferring the cast aluminum wheel cast from the mold;
Automatic inspection means including a camera for photographing the lower mold of the mold from which the cast product is separated, and a camera for photographing the cast product transferred by the catcher unit; In,

The automatic inspection means
A transparent plate provided on the transfer member of the catcher unit and on which the cast product is placed,
A lower camera for photographing the lower side of the cast product through the transparent plate,
An upper camera for photographing the upper side of the cast product,
A lower type camera provided under the transfer member to photograph the inside of the lower mold of the mold from which the cast product is separated,
A rotating unit for rotating the transparent plate in the transfer member,
A protective plate that opens or covers an upper portion of the lower camera as the transparent plate is transferred by the transfer member;
A two-cavity type low-pressure casting system comprising an air nozzle for forming an air curtain by spraying high-pressure air in front of the upper and lower cameras. The method according to claim 1 or 2,
A filter ball supply unit for supplying a filter ball;
A filter ball input unit provided in the transfer member of the catcher unit and for introducing the filter ball supplied by the filter ball supply unit into a sprue formed in the lower mold of the mold; further comprising,
The filter ball is a two-cavity type low-pressure casting system having an automatic aluminum wheel inspection means, characterized in that the filter ball is made by aggregating stainless wire and coated with aluminum on the surface to maintain the ball shape. delete

Images