JP2018043268A - Gate closing member for casting apparatus, casting apparatus, mold releasing agent application method and casting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gate closing member for a casting apparatus, the casting apparatus, a mold releasing agent application method and a casting method capable of preventing the mold releasing agent from dropping into the gate.SOLUTION: A gate closing member for a casting apparatus includes a mold which comprises an upper die and a lower die having a gate on the lower side and can form a mold cavity by die-matching the upper die and the lower die, and is used for a casting apparatus main body configured such that molten metal in a retention furnace arranged on the lower side of the mold is charged into the mold cavity via the gate. Therein, a gate cover part which is attachably and detachably configured for the gate and can close the target when being to fitted to the gate is provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a casting apparatus gate closing member used in a casting apparatus, a casting apparatus including the casting apparatus gate closing member, and a mold release agent coating method and a casting method performed using the casting apparatus gate closing member. About.

  Conventionally, as a casting apparatus for producing a cast product such as an aluminum alloy by low-pressure or low-medium pressure casting, for example, as shown in FIG. 4, a lower mold 102 capable of forming a mold cavity 106 having a gate 108 below, An upper mold 104, a holding furnace 110 which is disposed below the lower mold 102 and accommodates the molten metal and forms a sealed space above the molten metal, and an upper end opening communicates with the pouring gate 108 of the mold cavity 106, and a lower end opening is retained. A cylindrical stalk 112 immersed in the molten metal in the furnace 110, a pressurizing mechanism 114 for supplying gas into the sealed space of the holding furnace 110 to pressurize the inside of the holding furnace 110, and a gate 108 can be moved forward and backward. A vertical casting apparatus having a gate seal center pressing pin 118 configured to open and close the gate 108 is known (Patent Document 1). In the vertical casting apparatus of Patent Document 1, the gate seal center pressure pin 118 has a fitting portion 119 that can be fitted to the gate 108 at the lower end thereof, and the mold cavity 106 is filled with the molten metal. After that, the gate 108 is closed by the fitting portion 119 and the molten metal filled in the mold cavity is pressurized by the peripheral portion of the fitting portion 119.

  Conventionally, in the casting process using the vertical casting apparatus, the molds of the lower mold 102 and the upper mold 104 are provided for each casting cycle in order to improve the mold releasability of the cast product with respect to the lower mold 102 and the upper mold 104. The process which apply | coats a mold release agent to the surface is performed (patent document 2 and 3 etc.).

JP 2014-136252 A JP 2009-178722 A JP 2008-114278 A

  However, in the conventional solid casting apparatus, since the gate 108 is formed below, the mold release agent applied to the mold surfaces of the lower mold 102 and the upper mold 104 is dropped into the stalk 112 through the gate 108, There is a risk of adhering to the inner wall of the stalk 112. When the release agent adheres to the inner wall of the stalk 112 in this way, in the next casting cycle, the component of the release agent attached to the inner wall is gasified by the heat of the molten metal flowing through the stalk 112, and the mold cavity 106 together with the molten metal. This causes a problem that casting defects such as sinkholes and casting surface defects occur. In addition, the mold release agent may drop into the holding furnace 110 and be mixed into the molten metal. In this case, there is a problem that the quality of the molten metal is deteriorated.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a gate closing member for a casting apparatus, a casting apparatus, and a release agent coating method capable of preventing dripping of the release agent into the gate. And providing a casting method.

  A pouring gate closing member for a casting apparatus according to the present invention includes an upper mold and a lower mold having a pouring gate below, and includes a mold capable of forming a mold cavity by matching the upper mold and the lower mold. A pouring gate closing member for a casting apparatus used in a casting apparatus main body configured to fill the mold cavity with molten metal in a holding furnace arranged below the mold, and the pouring gate It is configured to be attachable to and detachable from the gate, and includes a gate lid portion that can close the gate when mounted on the gate.

  The casting apparatus gate closing member according to the present invention is provided below the gate opening and is configured to be inserted into the gate when the casting apparatus closing member is attached to the gate. It is preferable that the adhering matter removing unit is further configured to remove the adhering matter adhering to the inner peripheral surface of the pouring gate when inserted into the pouring gate.

  Further, the casting device gate closing member according to the present invention is provided below the gate lid portion, and is inserted into the gate when the casting device gate closing member is attached to the gate. And further comprising a lubricant application portion configured to hold the lubricant and to apply the lubricant to the inner peripheral surface of the gate when inserted into the gate. Is preferred. In this case, it is more preferable that the lubricant application unit is configured to remove deposits attached to the inner peripheral surface of the gate when inserted into the gate.

  A casting apparatus according to the present invention includes an upper mold and a lower mold having a gate below, and includes a mold capable of forming a mold cavity by combining the upper mold and the lower mold. A casting apparatus main body configured to fill the mold cavity with the molten metal in the holding furnace disposed below is provided with the above-described casting apparatus pouring member closing member.

  In the casting apparatus according to the present invention, the casting apparatus body includes a closing unit configured to close from the upper mold side after being filled with the molten metal in the mold cavity and to be fitted and closed to the gate. Furthermore, it is preferable that the casting apparatus gate closing member is a casting apparatus opening closing member provided with the lubricant application part.

  The casting apparatus according to the present invention further includes a product take-out mechanism configured to carry out a cast product cast in the mold cavity, and the product take-out mechanism has a grip portion capable of gripping the cast product. The casting device gate closing member has a gripped portion that can be gripped by the gripping portion of the product extraction mechanism, and the product extraction mechanism grips the casting device gate closing member to It is configured to carry in between the lower molds, close the gate by the gate lid portion of the gate closing member for the casting apparatus, and then grip the cast product and carry it out between the upper mold and the lower mold. It is preferable.

  In this case, the casting apparatus further includes a gate closing member holding portion disposed within a movable range of the gripping portion of the product take-out mechanism, and the casting gate closing member for the casting apparatus includes the lubricant application portion. A pouring gate closing member for a casting device, and the pouring member holding portion is capable of holding the pouring gate closing member for a casting device in a state where the lubricant application portion of the pouring gate closing member for the casting device is immersed in a lubricant. The product take-out mechanism is configured to grip the pouring gate closing member for the casting apparatus held by the pouring gate closing member holding portion, and at the time when the mold opening of the lower mold and the upper mold is substantially completed. You may comprise so that it may stand by in an extraction waiting position.

  The release agent coating method according to the present invention includes an upper mold and a lower mold having a pouring gate below, and includes a mold capable of forming a mold cavity by combining the upper mold and the lower mold. A mold release agent for applying a mold release agent to the upper mold and the lower mold in a casting apparatus configured to fill the mold cavity with molten metal in a holding furnace arranged below the mold. A pouring method is a coating method, wherein the pouring gate is closed by a pouring gate closing member for a casting apparatus that is configured to be detachable from the pouring gate and includes a pouring gate lid portion that can close the pouring gate when attached to the pouring gate. In this state, a release agent is applied to the mold surfaces of the upper mold and the lower mold.

  A casting method according to the present invention includes an upper mold and a lower mold having a gate below, and includes a mold capable of forming a mold cavity by combining the upper mold and the lower mold. A casting method for casting a cast product using a casting apparatus configured to fill the mold cavity with molten metal in a holding furnace disposed below, and holding the molten metal through the gate. Filling the mold cavity with the molten metal in the furnace, casting the cast product in the mold cavity, and opening the lower mold and the upper mold in a state where the cast product is held in the upper mold A mold opening step, and a pouring gate closing member for a casting apparatus, which is configured to be detachable from the pouring gate and includes a pouring lid portion capable of closing the pouring gate when attached to the pouring gate, is provided by the product take-out mechanism. Bring between the upper mold and the lower mold In the state where the gate is closed by the gate lid, the gate closing step of closing the gate by the product gate, the product removal step of taking out the casting product held by the upper mold by the product removal mechanism, and the gate closed by the gate lid portion, And a release agent coating step of applying a release agent to the mold surfaces of the upper mold and the lower mold.

  ADVANTAGE OF THE INVENTION According to this invention, the gate closing member for casting apparatuses which can prevent dripping of the mold release agent in the gate, a casting apparatus, the mold release agent application method, and the casting method can be provided.

It is a figure showing roughly a part of casting device concerning one embodiment of the present invention. It is a figure which shows the dimensional relationship of the gate closing member for casting apparatuses, and a gate. It is a figure which shows the state which carried in the casting apparatus main body into the casting apparatus main body. It is a figure which shows the state which attached the pouring gate closing member for casting apparatuses to the pouring gate. It is a figure which shows the state which takes out a casting by a product taking-out mechanism. It is a figure which shows the state which has apply | coated the mold release agent with respect to the metal mold | die surface. It is a figure which shows schematic structure of the conventional solid casting apparatus.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described with reference to the drawings. The following embodiments do not limit the invention according to each claim, and all combinations of features described in the embodiments are not necessarily essential to the solution means of the invention. .

  The casting apparatus according to this embodiment is a vertical casting apparatus mainly used for low-pressure casting. As shown in FIG. 1, a casting apparatus body 1 capable of casting a cast product, and a spout 15 described later of the casting apparatus body 1. And a product removal mechanism 30 (see FIGS. 3A to 3C) configured to carry out the cast product cast in the mold cavity of the casting apparatus main body 1. And a gate closing member holding part 40 (see FIG. 3A) in which a lubricant is stored.

  The casting apparatus main body 1 is capable of moving forward and backward with respect to the fixed platen 2 above the fixed platen 2, a holding platen (not shown) for housing the molten metal, a fixed platen 2 fixed horizontally on the holding platen, and The movable platen 4 arranged, the mold 6 mounted between the fixed platen 2 and the movable platen 4, the molten metal communicating member 8 arranged on the fixed platen 2 side, and the gate arranged on the movable platen 4 side A seal center pressure pin 10 (blocking means) and one or a plurality of partial pressure pins 12 are provided. Further, the casting apparatus main body 1 has other configurations necessary for functioning as a vertical casting apparatus, for example, a moving mechanism (not shown) that moves the movable plate 4 forward and backward in a direction approaching or separating from the fixed plate 2. ), A supply mechanism (not shown) for supplying molten metal in the holding furnace into a mold cavity (not shown) via the molten metal communication member 8 and the gate 15, and control of mold opening / closing operation of the mold 6; The apparatus further includes a control device (not shown) that performs various controls such as control of the forward / backward movement of the gate seal center pressurizing pin 10 and the partial pressurizing pin 12 and control related to the supply of molten metal by the supply mechanism.

  The mold 6 includes a lower mold 14 attached to the upper surface of the fixed platen 2 and an upper mold 16 attached to the lower surface of the movable platen 4. The lower mold 14 has a gate 15 below. In the present embodiment, a pouring gate 15 is formed by fitting a cylindrical pouring gate insert 18 into a through hole formed in the approximate center of the lower mold 14. The mold 6 is configured such that a mold cavity for forming a cast product is formed by matching the lower mold 14 and the upper mold 16.

  The molten metal communication member 8 is a metallic cylindrical member, and is configured so that the molten metal can flow inside. The molten metal communicating member 8 is an abbreviation of the stationary platen 2 and the lower mold 14 so that the upper end opening communicates with the mold cavity via the pouring gate 15 and the lower end opening communicates with a holding furnace disposed below the mold 6. It is fitted in a through hole formed in the center. The molten metal communicating member 8 is generally referred to as “stalk” in which the lower end opening is immersed in the molten metal in the holding furnace arranged below the mold 6 (Patent Documents 1 to 3). 3). Also, the holding furnace has a form in which the lower end opening of the molten metal communicating member 8 is directly communicated with the upper end opening of a pouring chamber (also called a hot water discharge chamber) of the holding furnace disposed below the mold 6. In some cases, a holding furnace in which such a molten metal communicating member is employed is referred to as a “stokeless furnace”.

  The gate seal center pressure pin 10 includes a substantially rod-shaped cylinder rod 10a that moves forward and backward by hydraulic pressure from a hydraulic pressure supply source (not shown), and a pressure pin member 10b that is detachably attached to the lower end of the cylinder rod 10a. After the mold cavity is filled with the molten metal, the mold cavity descends from the upper mold 16 side, closes the gate 15, and applies pressure to the molten metal in the mold cavity. The pressurizing pin member 10b is provided with a columnar pressurizing part 11a, a fitting part 11b that protrudes downward from the pressurizing part 11a, and can close the gate 15; and a lower end part of the fitting part 11b. And a tapered portion 11c formed. The fitting portion 11b is formed in a columnar shape having an outer diameter smaller than the outer diameter of the pressurizing portion 11a, and is configured to be fitted to the gate 15 and closed. When the cylinder rod 10a is further lowered from the state in which the gate 15 is closed by the fitting portion 11b, the pressurizing portion 11a is configured to press the molten metal in the hot water pool in the mold cavity by its lower surface. With the gate seal center pressurizing pin 10 configured in this way, it is possible to prevent the occurrence of a sinkhole or the like of a cast product. The tapered portion 11c is formed in a downward conical shape, that is, a tapered shape having a smaller diameter from the upper end to the lower end. The partial pressure pin 12 is formed in a substantially rod shape, and is configured to press the molten metal in the hot water pool in the mold cavity by the lower end portion thereof.

  The pressurizing pin member 10b has at least one of the outer diameter of the pressurizing portion 11a, the outer diameter of the fitting portion 11b, and the length in the vertical direction of the fitting portion 11b according to a desired molten metal supply amount (volume of hot metal) It is configured to be arbitrarily exchangeable with another different pressure pin member. Moreover, when the outer diameter of the fitting portion 11b is changed by exchanging the pressure pin member 10b, the gate entrance 18 can be arbitrarily replaced with another gate entrance corresponding to a new pressure pin member. It is configured. Here, the molten metal supply amount is that the gate pin 15 is further lowered after the gate 15 is closed by the fitting portion 11b of the pressure pin member 10b by lowering the gate seal center pressure pin 10. This means the amount of molten metal supplied from the hot water pool into the mold cavity when the volume of the hot water pool is reduced. This molten metal supply amount is inserted into the pouring gate 15 after the pouring area (pressing area) in the vertical direction due to the outer diameter difference between the outer diameter of the pressurizing portion 11a and the outer diameter of the fitting portion 11b, and the pouring gate 15 is closed. It becomes substantially the same amount as the feeder volume calculated by the product of the inserted length of the fitting portion 11b.

  As the holding furnace, various known holding furnaces can be adopted as long as the holding furnace can accommodate the molten metal to be supplied into the mold cavity. For example, as a holding furnace, the molten metal is disposed below the lower mold 14 and communicates with a pouring chamber (not shown) containing molten metal via a communication path with the pouring chamber, and the molten metal is supplied to the pouring chamber. A holding chamber (not shown), an on-off valve mechanism (not shown) for opening and closing the communication passage of the pouring chamber and the holding chamber, and a hot water level sensor (not shown) capable of detecting the hot water level in the pouring chamber ) And a plurality of heaters (not shown) for heating the molten metal stored in the pouring chamber and the holding chamber can be used. Such a holding furnace is described in Patent Document 1, for example. Further, a “stokeless furnace” as described above may be employed.

  As the supply mechanism, various known supply mechanisms can be adopted as long as the molten metal in the holding furnace can be supplied into the mold cavity. For example, as a supply mechanism, a pressurizing mechanism (not shown) that pressurizes the inside of the holding furnace by supplying gas to a sealed space formed in the holding furnace, and a mold by discharging gas from the mold cavity A supply mechanism comprising a pressure reducing mechanism (not shown) for reducing the pressure in the cavity, and a hot water supply control unit for performing hot water control by interlocking the pressure reducing mechanism and the pressure mechanism when filling the mold cavity from the holding furnace. Can be used.

  In addition, since the casting apparatus main body 1 can use arbitrarily the various well-known vertical casting apparatuses provided with the metal mold | die 6 which can form the metal mold cavity which has the gate 15 in the downward direction, it is different from the structure mentioned above. Detailed description of the configuration is omitted.

  As shown in FIG. 2, the pouring gate closing member 20 for a casting apparatus includes a rod portion 21 formed in a substantially rod shape, a pouring lid portion 22 provided in the middle of the rod portion 21, and a lower portion than the pouring cap portion 22. A pouring gate insertion portion that is provided on the side and is configured to be inserted into the pouring gate 15, and a gripped portion 28 that is provided at the upper end of the rod portion 21. The sprue insertion portion includes a deposit removing portion 26 provided at the lower end portion of the rod portion 21 and a lubricant applying portion 24 provided between the spout lid portion 22 and the deposit removing portion 26.

The gate lid portion 22 is formed in a disc shape having an outer diameter d ₁ larger than the inner diameter D of the gate 15, and closes the gate 15 when the casting apparatus gate closing member 20 is attached to the gate 15. (See FIG. 3D). A tapered portion 22 a that is inclined downward and inward is formed on the outer peripheral edge portion of the lower surface of the gate lid portion 22.

The lubricant application part 24 has a brush structure constituted by a number of fibrous members extending radially outward from the rod part 21, in this embodiment, wire brushes. The lubricant application part 24 has an outer diameter d ₂ that is larger than the inner diameter D of the gate 15 and smaller than the outer diameter d ₁ of the gate lid 22, and at least pressurizes the gate seal center pressure pin 10. It has the length of the axial direction which can apply | coat a lubricant to the inner peripheral surface of the gate 15 in which the fitting part 11b of the pin member 10b is inserted. The lubricant application part 24 has a lower hardness than the gate entrance 18 and is configured not to damage the inner peripheral surface of the gate 15. The lubricant application part 24 having such a configuration can hold the lubricant between a large number of fibrous members, and is in contact with the inner peripheral surface of the gate 15 while being bent, when inserted into the gate 15. It is comprised so that a lubricant may be apply | coated to the internal peripheral surface of (refer FIG. 3B). Moreover, the lubricant application part 24 is configured to remove the aluminum dust adhering to the inner peripheral surface of the gate 15 simultaneously with the application of the lubricant.

The deposit removing part 26 is formed in a disk shape having an outer diameter d ₃ smaller than the inner diameter D of the gate 15, and is inserted into the gate 15 when the pouring gate closing member 20 for the casting apparatus is inserted into the gate 15. (See FIG. 3B). A tapered portion 26 a that is inclined downward and inward is formed on the outer peripheral edge of the lower surface of the deposit removing portion 26. The deposit removing part 26 having such a configuration is configured to protrude from the inner peripheral surface of the gate 15 toward the center of the molten metal communication member 8, for example, attached to the inner peripheral surface of the gate 15 when inserted into the gate 15. The formed aluminum solidified pieces and the like are configured to protrude into the holding furnace and be removed. By such a deposit removing part 26, solidified pieces of aluminum that are larger and harder than the aluminum debris attached to the inner peripheral surface of the gate 15 are removed before the lubricant application part 24 is inserted into the gate 15 and lubricated. The removal of the aluminum scum adhering to the inner peripheral surface of the gate 15 by the agent application unit 24 and the application of the lubricant to the inner peripheral surface of the gate 15 are configured more reliably.

  The gripped portion 28 is formed in a flat cylindrical shape, and a groove 28 a that can be gripped by a gripping portion 32 (to be described later) of the product take-out mechanism 30 is formed over the entire circumference. The gripped portion 28 is designed to correspond to the gripping portion 32 for taking out the cast product of the product take-out mechanism 30, and the shape and structure are appropriately determined according to the shape and structure of the grip portion 32 of the product take-out mechanism 30. Be changed.

  The product take-out mechanism 30 is a product take-out robot configured to be able to automatically carry in and out the pouring gate closing member 20 for casting apparatus and carry out a cast product. As shown in FIG. A gripping portion 32 configured to be able to grip the casted product A and the gripped portion 28 of the casting apparatus pouring member closing member 20, an arm portion 34 supporting the gripping portion 32, and the gripping portion 32 and the arm portion 34. A drive control unit (not shown) that performs drive control. The arm part 34 is fixed to the final joint part of the product take-out robot. In FIG. 3A to FIG. 3C, the product take-out robot itself including the final joint is not shown. The grip portion 32 has a pair of hand portions 32a and 32b that can be advanced and retracted in directions opposite to each other, and the gripped state of the cast A or the gripped portion 28 by the advance and retreat operation of the hand portions 32a and 32b. And a non-gripping state (gripping release state). As shown in FIGS. 3A to 3C, the arm portion 34 can move the gripping portion 32 in any direction including the horizontal direction and the vertical direction within a predetermined movable range, and the gripping portion 32 faces the lower mold 14. It is possible to rotate between the state where it is in contact with the upper die 16.

  The product take-out mechanism 30 having such a configuration grips the pouring gate closing member 20 for a casting apparatus held in the pouring gate closing member holding portion 40 described later by various programs stored in the storage portion of the drive control portion. When the mold opening of the lower mold 14 and the upper mold 16 is substantially completed, the apparatus is configured to wait at a predetermined product take-out standby position. In addition, the product take-out mechanism 30 holds the casting device gate closing member 20 and carries it between the lower die 14 and the upper die 16 after the lower die 14 and the upper die 16 are opened by the program (see FIG. 3A), the pouring gate 15 is closed by the pouring lid portion 22 of the pouring gate closing member 20 for the casting apparatus (see FIG. 3B), the gripping portion 32 is reversed, and the cast product A is newly gripped, and the lower mold 14 and It is comprised so that it may carry out from between the upper mold | types 16 (refer FIG. 3C).

  The gate closing member holding part 40 is disposed within the movable range of the gripping part 32 of the product take-out mechanism 30 and, as shown in FIG. 3A, for the casting apparatus in a state where the lubricant application part 24 is immersed in the lubricant. The gate closing member 20 is configured to be held. The gate closing member holding portion 40 is provided with a lubricant supply port (not shown) so that the lubricant can be replenished at an appropriate timing.

  Next, a casting method using the casting apparatus according to this embodiment will be described with reference to FIGS. 3A to 3D.

  In the casting method according to this embodiment, first, the lower mold 14 and the upper mold 16 are closed to form a mold cavity, and then the sealed space in the holding furnace is pressurized by gas pressure, whereby the molten metal communicating member 8 is formed. The molten metal in the holding furnace is filled into the mold cavity through the gate 15. After filling the molten metal, the gate 15 is closed by the fitting portion 11b of the gate seal center pressure pin 10, and then the mold cavity is pressed by the pressure portion 11a and the partial pressure pin 12 of the gate seal center pressure pin 10. Pressure is applied to the molten metal inside, and the molten metal for solidification shrinkage is supplied from the hot water pool. Thereby, the casting A is cast in the mold cavity (casting process). Since this casting process is performed by a method similar to a conventionally known casting method that uses both gas pressure and hydraulic pressure to fill the mold cavity with molten metal, detailed description thereof will be omitted.

  Further, when the pouring gate 20 for casting apparatus held by the pouring member holding part 40 is gripped by the product take-off mechanism 30 and the mold opening of the lower die 14 and the upper die 16 is substantially completed, the product take-out standby position To wait. It should be noted that the excess lubricant from the lubricant impregnating portion 24 of the casting apparatus pouring member closing member 20 is moved until the casting apparatus pouring member closing member 20 is moved from the pouring member closing member holding portion 40 and waits at the product removal standby position. Is dropped, the lubricant receiving container (not shown) is arranged above the gate closing member holding portion 40 or adjacent to the gate closing member holding portion 40 after gripping the gate closing member 20 for casting apparatus. ) Above, the product take-off mechanism 30 is moved up and down by the product take-off mechanism 30 so that excess lubricant is shaken off, so that the lubricant does not drip from the lubricant impregnated portion 24, and then the product take-off stand-by. It may be moved to a position.

  Thereafter, as shown in FIG. 3A, the lower mold 14 and the upper mold 16 are opened in a state where the casting A is held by the upper mold 16 (a mold opening process), and the gate closing member for the casting apparatus is opened by the product take-out mechanism 30. 20 is carried between the lower mold 14 and the upper mold 16.

  After the pouring gate closing member 20 for the casting apparatus is carried in, as shown in FIG. 3B, the lubricant application unit 24 and the deposit removing unit 26 are inserted into the pouring gate 15, and the pouring gate 15 is closed by the pouring lid portion 22. Then, the holding part 32 is lowered and the casting apparatus pouring gate closing member 20 is attached to the pouring gate 15 (pouring gate closing process). At this time, deposits such as aluminum solidified pieces and aluminum debris adhering to the inner peripheral surface of the gate 15 are removed by the deposit removing unit 26 and the lubricant applying unit 24, and the nozzle 15 of the gate 15 is removed by the lubricant applying unit 24. The lubricant is applied to at least the axial length of the inner peripheral surface into which the fitting portion 11b of the gate seal center pressurizing pin 10 is inserted.

  After the pouring gate member for casting apparatus 20 is attached to the pouring gate 15, the holding state of the pouring member for casting apparatus 20 by the grip portion 32 of the product take-out mechanism 30 is released, and as shown in FIG. The grip part 32 of 30 is reversed from the state facing the lower mold 14 to the state facing the upper mold 16, and the casting part A held by the upper mold 16 is gripped again by the grip part 32 of the product takeout mechanism 30. Then, the cast product A is taken out of the casting apparatus main body 1 (product take-out step).

  After the casting A is taken out of the casting apparatus main body 1, as shown in FIG. 3D, the lower mold is closed by air blow or the like in a state where the gate 15 is closed by the gate lid portion 22 of the casting apparatus gate closing member 20. After the mold surfaces of 14 and the upper mold 16 are cleaned, a mold release agent is applied to the mold surfaces of the lower mold 14 and the upper mold 16 by an automatic mold release agent coating apparatus 50 (the robot itself is not shown) such as a spray robot. (Release agent coating process). Moreover, the excess mold release agent is removed by air blow etc. as needed. The air blowing process and the release agent coating process may be executed automatically, or a part or all of them may be executed manually.

  Thereafter, the gripping portion 32 of the product take-out mechanism 30 is again carried between the lower mold 14 and the upper mold 16, the casting apparatus pouring member closing member 20 is removed from the pouring gate 15, and taken out of the casting apparatus main body 1. Then, it is accommodated in the gate closing member holding part 40.

  With the above process, one casting cycle is completed. And the casting A is continuously cast by repeatedly performing the above casting cycle.

  As described above, the gate closing member 20 for a casting apparatus according to the present embodiment is configured to be detachable from the gate 15 of the casting apparatus body 1 and includes the gate lid portion 22 that can close the gate 15. Yes. According to such a casting apparatus gate closing member 20, the casting apparatus gate closing member 20 is attached to the gate 15 when the mold release agent is applied to the mold surfaces of the lower mold 14 and the upper mold 16. It is possible to prevent the release agent from dropping into 15, thereby preventing the above-described casting failure and deterioration of the molten metal that may occur in a conventional casting apparatus.

  The casting apparatus gate closing member 20 according to the present embodiment is provided below the gate lid 22 and is inserted into the gate 15 when the casting apparatus gate closing member 20 is attached to the gate 15. The deposit removing unit 26 is configured to remove deposits such as aluminum solidified pieces attached to the inner peripheral surface of the gate 15 when inserted into the gate 15. Yes. According to such a casting apparatus gate closing member 20, it is possible to remove deposits such as aluminum solidified pieces adhering to the inner peripheral surface of the gate 15 every casting cycle. The growth of deposits such as fragments can be prevented.

  Further, the casting device gate closing member 20 according to the present embodiment is provided below the gate lid portion 22 and is inserted into the gate 15 when the casting device gate closing member 20 is attached to the gate 15. The lubricant application unit 24 is configured to hold the lubricant, and is configured to apply the lubricant to the inner peripheral surface of the gate 15 when inserted into the gate 15. ing. According to such a pouring gate closing member 20 for a casting apparatus, it becomes possible to apply a lubricant to the inner peripheral surface of the pouring gate 15 for each casting cycle, so that the fitting portion 11b of the gate seal center pressurizing pin 10 is provided. A good sliding state when fitted to the gate 15 can be ensured and maintained. Further, as described above, the lubricant application unit 24 is configured to remove the aluminum dust attached to the inner peripheral surface of the gate 15 simultaneously with the application of the lubricant. According to such a lubricant application part 24, it is possible to remove deposits such as aluminum dust attached to the inner peripheral surface of the gate 15 every casting cycle without damaging the inner peripheral surface of the gate 15. Therefore, while preventing the growth of deposits such as aluminum debris in the gate 15, a good sliding state when the fitting portion 11 b of the gate seal center pressurizing pin 10 is fitted to the gate 15 is maintained for a long time. Can be secured and maintained.

  In addition, the casting apparatus according to the present embodiment has a gripping portion 32 that allows the product take-out mechanism 30 to grip the cast product, and the casting apparatus pouring member closing member 20 can hold the gripping portion 32 of the product take-out mechanism 30. A grip 28 is provided. As described above, in the casting apparatus according to the present embodiment, the gripping portion 28 of the casting apparatus pouring member 20 is made to correspond to the gripping portion 32 of the product removal mechanism 30, thereby casting as the gripping portion 32 of the product removal mechanism 30. There is no need to prepare two types for the product and for the gate closing member for the casting apparatus, and there is an advantage that the existing product take-out mechanism 30 can be used. Moreover, since it becomes possible to carry in and out of the pouring gate member 20 for casting apparatus and carry out of a cast product by the common holding | grip part 32, it becomes possible to suppress handling by the product taking-out mechanism 30, and casting. This has the advantage that the influence on the cycle time can be minimized. Furthermore, since it is possible to insert the lubricant application part 24 and the deposit removal part 26 into the gate 15 with the holding part 32 firmly holding the gate closing member 20 for the casting apparatus, the removal of the deposit In addition, there is an advantage that the application of the lubricant and the lubricant can be reliably performed within the range of the transportability of the product take-out mechanism 30.

  The preferred embodiment of the present invention has been described above, but the technical scope of the present invention is not limited to the scope described in the above-described embodiment. Various modifications or improvements can be added to the above embodiments.

  For example, the casting apparatus main body 1 is not limited to the configuration illustrated in FIG. 1, and includes a mold 6 capable of forming a mold cavity having a gate 15 below, and the molten metal in the holding furnace is formed through the gate 15. As long as it is configured to fill the mold cavity, various known configurations can be employed.

  In the above-described embodiment, the gate lid portion 22 has been described as being formed in a disk shape. However, the present invention is not limited to this, and various configurations are possible as long as the gate 15 can be closed when attached to the gate 15. It is possible to adopt a configuration.

  In the above-described embodiment, the lubricant application unit 24 has been described as having a brush structure. However, the present invention is not limited to this, and the lubricant application unit 24 is configured to be able to hold the lubricant, and is inserted into the gate 15 when inserted into the gate 15. Various configurations can be employed as long as the lubricant can be applied. Examples of such an alternative configuration include a steel wool structure. Moreover, the lubricant application part 24 should just be provided in the downward side rather than the gate lid part 22, and the installation position can be changed arbitrarily.

  In the above-described embodiment, the deposit removing part 26 is described as being formed in a disk shape, but the present invention is not limited to this, and deposits adhered to the inner peripheral surface of the gate 15 when being inserted into the gate 15 are removed. Various configurations can be employed as long as the configurations are possible. As such an alternative configuration, for example, the brush structure described as the structure of the lubricant application unit 24 in the above-described embodiment can be cited. Moreover, the deposit | attachment removal part 26 should just be provided below the gate lid part 22, and the installation position can be changed arbitrarily.

  In the above-described embodiment, the configuration in which the lubricant application unit 24 and the deposit removal unit 26 are provided as separate members has been described as an example. However, the present invention is not limited to this, and the function and deposits of the lubricant application unit 24 are not limited thereto. It is good also as a structure which provides the single member which has both the function of the removal part 26. FIG.

  In the above-described embodiment, it has been described that the gripped portion 28 is formed in a flat columnar shape and the groove 28a is formed over the entire circumference. However, the present invention is not limited thereto, and the gripping portion 32 of the product take-out mechanism 30 is not limited thereto. Various configurations can be adopted as long as the configuration allows gripping. Moreover, the to-be-gripped part 28 should just be provided in the upper side rather than the gate lid part 22, and the installation position can be changed arbitrarily. Furthermore, the gripped portion 28 may be configured to be detachable with respect to the rod portion 21 and may be replaced with another gripped portion according to the shape and structure of the grip portion 32 of the product takeout mechanism 30.

  In the embodiment described above, the grip portion 32 of the product take-out mechanism 30 has been described as having the pair of hand portions 32a and 32b. However, the present invention is not limited to this, and grip portions having various shapes and structures can be employed. . Further, the product take-out mechanism 30 is not limited to the illustrated example, and may be any configuration that can carry in and out the casting apparatus gate closing member 20 and carry out the cast product.

  The gate closing member holding portion 40 is not limited to the illustrated example, and is disposed within the movable range of the gripping portion 32 of the product take-out mechanism 30, can store the lubricant, and the gripped portion 28 is erected upward. Any configuration that can be held is acceptable. Further, when it is necessary to move the casting apparatus gate closing member 20 up and down by the product take-out mechanism 30 to shake off excess lubricant and prevent the lubricant from dripping from the lubricant-impregnated portion 24, the product take-out mechanism You may arrange | position the gate closing member holding | maintenance part 40 in the lubricant receiving container arrange | positioned in the movable range of 30 holding | gripping parts 32. FIG.

  DESCRIPTION OF SYMBOLS 1 Casting device main body, 6 Mold, 8 Molten communication member, 10 Gate seal center pressurizing pin (blocking means), 14 Lower mold, 15 Pouring gate, 16 Upper mold, 20 Pouring gate closing member for casting apparatus, 22 Pouring lid portion , 24 Lubricant application part, 26 Deposit removal part, 28 Grip part, 30 Product take-out mechanism, 32 Gripping part, 40 Gate closing member holding part

Claims (10)

In a holding furnace including an upper mold and a lower mold having a gate below, and having a mold capable of forming a mold cavity by combining the upper mold and the lower mold, and disposed below the mold A casting apparatus gate closing member used for a casting apparatus body configured to fill the mold cavity with the molten metal via the gate,
It is configured to be detachable from the gate,
A gate closing member for a casting apparatus, comprising a gate lid portion capable of closing the gate when mounted on the gate. Further provided with a deposit removing portion that is provided below the gate lid and is configured to be inserted into the gate when the gate closing member for the casting apparatus is attached to the gate.
The said deposit | attachment removal part is comprised so that the deposit | attachment adhering to the internal peripheral surface of this gate may be removed at the time of insertion to the said gate. The gate closing member for casting apparatuses of Claim 1 characterized by the above-mentioned. A lubricant applicator provided on the lower side of the gate lid and configured to be inserted into the gate when the gate closing member for the casting apparatus is attached to the gate;
The lubricant application part is configured to be able to hold a lubricant, and configured to apply a lubricant to an inner peripheral surface of the gate when inserted into the gate. A pouring gate closing member for a casting apparatus as described. The said lubricant application part is comprised so that the deposit | attachment adhering to the internal peripheral surface of this pouring gate may be removed at the time of insertion in the said pouring gate. The pouring gate closing member for casting apparatuses of Claim 3 characterized by the above-mentioned. In a holding furnace including an upper mold and a lower mold having a gate below, and having a mold capable of forming a mold cavity by combining the upper mold and the lower mold, and disposed below the mold A casting apparatus body configured to fill the mold cavity with the molten metal via the gate;
A casting apparatus comprising: the gate closing member for a casting apparatus according to any one of claims 1 to 4. The casting apparatus main body further includes closing means configured to fill the mold cavity with the molten metal, then descend from the upper mold side, and fit and close to the gate.
The casting apparatus according to claim 5, wherein the casting apparatus gate closing member is the casting apparatus opening closing member according to claim 3. A product take-out mechanism configured to carry out a cast product cast in the mold cavity;
The product take-out mechanism has a grip portion capable of gripping the cast product,
The casting apparatus gate closing member has a gripped portion that can be gripped by the grip portion of the product take-out mechanism,
The product take-off mechanism grips the casting device gate closing member and carries it between the upper mold and the lower mold, and closes the gate by the gate lid portion of the casting device closing member, The casting apparatus according to claim 5 or 6, wherein the casting product is configured to be gripped and carried out between the upper mold and the lower mold. Further comprising a gate closing member holding portion disposed within a movable range of the grip portion of the product take-out mechanism,
The casting apparatus gate closing member is a casting apparatus gate closing member according to claim 3 or 4,
The gate closing member holding part is configured to be able to hold the gate closing member for a casting apparatus in a state where the lubricant application part of the gate closing member for the casting apparatus is immersed in a lubricant,
The product take-off mechanism grips the pouring gate closing member for the casting apparatus held by the pouring gate closing member holding portion, and when the mold opening of the lower mold and the upper mold is substantially completed, the product take-out standby position The casting apparatus according to claim 7, wherein the casting apparatus is configured to stand by. In a holding furnace including an upper mold and a lower mold having a gate below, and having a mold capable of forming a mold cavity by combining the upper mold and the lower mold, and disposed below the mold A mold release agent coating method for applying a mold release agent to the upper mold and the lower mold in a casting apparatus configured to fill the mold cavity with the molten metal of the mold,
In the state in which the gate is closed by a casting gate closing member for a casting apparatus that is configured to be detachable from the gate and includes a gate lid portion that can close the gate when attached to the gate. A mold release agent coating method comprising applying a mold release agent to a mold and a mold surface of the lower mold. In a holding furnace including an upper mold and a lower mold having a gate below, and having a mold capable of forming a mold cavity by combining the upper mold and the lower mold, and disposed below the mold A casting method for casting a casting using a casting apparatus configured to fill the mold cavity with the molten metal via the gate,
A casting step of filling the mold cavity with the molten metal in the holding furnace through the gate, and casting a cast product in the mold cavity;
A mold opening step of opening the lower mold and the upper mold in a state in which a cast product is held in the upper mold;
A pouring gate closing member for a casting apparatus, which is configured to be detachable from the pouring gate and includes a pouring lid portion that can close the pouring gate when attached to the pouring gate, is formed by a product take-out mechanism. A gate closing step of bringing in between molds and closing the gate by the gate lid portion;
A product removal step of taking out the cast product held by the upper mold by the product removal mechanism;
A casting method comprising: a mold release agent applying step of applying a mold release agent to the mold surfaces of the upper mold and the lower mold when the gate is closed by the gate lid portion.

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