JP2007330997A - Method and apparatus for conveying molding flask - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for conveying a mold, which can reduce the number of used molding flasks, can be installed at an inexpensive equipment cost, can eliminate the waste of installation space and can enhance manufacturing efficiency. <P>SOLUTION: A cooling area is divided into a first cooling area and a second cooling area, and the cooling process is composed of a first cooling process, in which molten state of the metal is cooled to the solidified point or lower at the first cooling area, and a second cooling process, in which the metal solidified at the first cooling process, is further cooled at the second cooling area. In the molding flask taking-out conveying position arranged between the first cooling area and the second cooling area, the molding flask taking-out conveying process for taking out the molding flask from the mold finishing the pouring of molten metal and conveying the took-out molding flask to a molding process is performed between the first cooling process and the second cooling process. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for transporting a plurality of molds and a mold transport apparatus for carrying out the method.

  Conventionally, as a method and apparatus for conveying a plurality of cast molds, one disclosed in Patent Document 1 is known. This is because, as shown in FIG. 1 of Patent Document 1, a plurality of platen carriages 43 on which a mold 37, a poured mold 61 and an empty casting frame 65 are respectively placed are placed along an elliptical closed runway. A surface plate circulation conveyance device 9 that is circulated is provided. Then, the mold 37, the poured mold 61 and the empty casting frame 65 necessary in the mold making zone 3, the pouring zone 5 and the frame spreading zone 7 are indexed to the necessary positions by the surface plate circulating and conveying device 9. Since the mold making device 15, the pouring device 55, and the frame separating device 64 can be operated independently from each other by carrying in or out the casting mold or the like, it is possible to perform casting with high production efficiency and flexibility. is there. Further, as shown in FIG. 13, the apparatus for transporting the mold in this way generally solidifies as a cooling zone for cooling the poured mold, and a solidification area 204 for cooling the molten metal below the freezing point. A further cooling area 206 is provided to further cool the metal. In such a case, after pouring, a long cooling zone was required until the metal poured into the mold was sufficiently cooled, so that the large platen circulation transfer device 200 was required and a large installation space was required.

Therefore, the mold conveying apparatus shown in FIG. 14 has been considered as one that does not require a large installation space. This is because the mold cooling conveyance line 254 in which the mold 252 removed from the casting frame 250 is arranged in a straight line for cooling is arranged in parallel with the surface plate circulation conveyance device 256, thereby reducing the installation space. It is to plan.
JP 2006-130516 A (page 12, FIG. 1)

  However, the mold conveying device of Patent Document 1 is a very effective technique in terms of production efficiency, but on the surface plate circulating and conveying device 9, an empty frame 65 is provided between the frame separating device 64 and the empty frame taking-out position 25. Only the platen carriage 43 is transported between the empty frame extraction position 25 and the mold carry-in position 39. For this reason, these have come to be considered to be a waste of equipment costs and installation space. Further, as shown in FIG. 13, from the mold carry-in position 218 to the frame spreading device 212 for removing the casting frame 208 from the mold 202 and the empty cast-frame carrying position 214, the pouring area 210, the solidification area 204, and further In the cooling area 206 or the like, since the casting frames 208 are continuously used or conveyed, it is necessary to secure a large number of casting frames. Further, in the mold conveying apparatus shown in FIG. 14, since the mold cooling and conveying line 254 is provided as another conveying equipment, there is a concern that the equipment cost is increased accordingly.

  The present invention has been made in view of the conventional problems, and it is possible to reduce the number of cast frames used, and to install with low equipment costs, eliminate waste of installation space, and achieve high production efficiency. Methods and apparatus are provided.

  In order to solve the above-mentioned problem, the constitutional feature of the invention according to claim 1 is that a plurality of molds each mounted with a mold incorporated in a cast frame and a poured mold in which a molten metal is poured into the mold are placed. A surface plate circulating and conveying device for circulatingly driving the surface plate along a closed conveying path is provided, and a molding process for forming a mold embedded in the casting frame by sanding into the casting frame, and molding in the molding process A mold carrying-in process for carrying the casted mold to a mold carrying-in position on the surface plate circulating and conveying apparatus; and the mold carried into the mold carrying position is conveyed to the pouring area by the surface-plate circulating and conveying apparatus and melted. A mold conveying method comprising: a pouring step of pouring a metal in a state; and a cooling step of cooling a poured mold poured in the pouring step in a cooling area of the surface plate circulation conveying device The cooling area is a first cooling area and a second cooling area. The cooling step is further divided into a first cooling step for cooling the molten metal below the freezing point in the first cooling area, and a metal solidified in the first cooling step in the second cooling area. In the second cooling step for cooling, the casting frame removal position provided between the first cooling area and the second cooling area, between the first cooling step and the second cooling step, The removal of the casting frame from the hot mold and the removal of the casting frame to the molding step are carried out.

  The structural feature of the invention according to claim 2 is that a plurality of surface plates on which a mold incorporated in a casting frame and a poured mold in which a molten metal is poured into the mold are respectively placed are closed and a conveying path is closed. A platen circulation conveyance device that circulates along the casting plate, a molding device that molds a mold that is sanded into the casting frame and is incorporated in the casting frame, and a mold molded by the molding device is the platen circulation conveyance device. A mold carry-in device for carrying in the upper mold carry-in position, and a pouring for pouring a molten metal in the pouring area into the mold carried from the mold carry-in position to the pouring area by the surface plate circulating and conveying device And a cooling area of the surface plate circulating and conveying apparatus that cools a poured mold that has been poured by the pouring apparatus, and the cooling area includes a molten metal below a freezing point. A first cooling area to be cooled, and the first A second cooling area that further cools the metal solidified in the rejection area, and a cast-frame removal position is provided between the first cooling area and the second cooling area. The carry-out position is provided with a cast-frame removing / unloading device that removes the cast frame from the poured mold and unloads the cast frame to the molding apparatus.

  The structural feature of the invention according to claim 3 is that in claim 2, a mold unloading position is provided between the rear end of the second cooling area and the mold loading position so as to be close to the mold loading position. A mold unloading device for unloading the mold cooled in the second cooling area at the mold unloading position is provided.

  The structural feature of the invention according to claim 4 is that, in claim 3, the second cooling area is an area where the solidified metal is cooled until the mechanical properties of the cast product are ensured. is there.

  A structural feature of the invention according to claim 5 is that, in claim 3 or 4, the surface plate circulation transport device includes an upper transport path for driving the plurality of surface plates in series and driving in the horizontal direction, and the upper stage. A lower conveyance path that is provided below the conveyance path and drives the plurality of surface plates in series and in the opposite horizontal direction, and the surface plate is disposed at one end of the upper and lower conveyance paths. A descending path that descends from the upper transport path to the lower transport path, and a lift that raises the surface plate from the lower transport path to the upper transport path at the other end of the upper and lower transport paths A plurality of surface plates, and the plurality of surface plates are driven to circulate in a vertical plane.

  A structural feature of the invention according to claim 6 is that, in claim 5, the upper carrying path includes the mold carry-in device, the pouring area, the first cooling area, and the cast-frame unloading device. Having at least having at least.

  According to the first aspect of the present invention, the casting frame is removed from the mold at the casting frame removing and conveying position provided between the first cooling area and the second cooling area. It is only necessary to secure the number of casting frames to be used from the area to the first cooling area, and the number of casting frames to be used can be greatly reduced. In addition, since the removal of the casting frame from the mold and the removal of the removed casting frame to the molding process are continuously performed at the removal position of the casting frame, the removed casting frame is conveyed by a surface plate circulation device. Can be omitted.

  According to the invention which concerns on Claim 2, since a casting frame is removed from a casting_mold | template with the casting_frame_removal conveyance apparatus provided between the 1st cooling area and the 2nd cooling area, on the surface plate circulation conveyance apparatus, pouring hot water It is only necessary to secure the number of casting frames to be used from the area to the first cooling area, and the number of casting frames to be used can be greatly reduced. Moreover, since the removal of the casting frame from the mold and the removal of the removed casting frame to the molding device are continuously performed by the casting frame removal / conveying device, the removed casting frame is conveyed by the surface plate circulation device. Therefore, it is possible to provide a mold conveyance device that omits a space for the above.

  According to the invention of claim 3, since the mold unloading position where the mold is removed from the surface plate by the mold unloading apparatus is close to the mold unloading position where the mold formed by the molding apparatus is loaded, the mold is removed. The space for transporting the empty surface plate on the surface plate circulation transport device can be reduced, and space can be saved.

  According to the invention of claim 4, in addition to the effect of the invention of claim 3, the mold with the cast frame removed is mechanical until the mechanical characteristics are secured in the second cooling area (for example, the metal is cast iron). In some cases, it is cooled down to a transformation point of 720 ° C. or less, so that a casting with good quality can be produced. In addition, since the second cooling area is provided in the surface plate circulation transfer device, there is no need for a dedicated cooling facility such as a cooling line for cooling the mold from which the casting frame has been removed, thereby reducing the equipment cost. Can be achieved.

  According to the invention according to claim 5, in addition to the effects of the inventions according to claims 2 to 4, the surface plate circulation transport device has a two-stage transport path that uses a space space. The installation space can be greatly reduced.

  According to the invention which concerns on Claim 6, in the upper conveyance path | route, the casting_mold | feeding-in apparatus which requires the operation | work which mounts the casting_mold | template shape | molded by the shaping area from the upper direction, and the pouring area where the pouring work from the upper direction is required And a cast-frame removal / unloading device that requires the work of removing the casting frame upward from the mold at the rear of the first cooling area, so that the mold placement work, the pouring work, and the casting mold are removed from the casting mold. The work can be performed smoothly, and it is not necessary to make a large space between the upper transport path and the lower transport path, so that space can be saved in the vertical direction.

  A first embodiment of a mold conveying method and apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a plan view of a mold conveying apparatus that implements a mold conveying method according to the present invention, and FIG. 2 is a view showing a surface plate carriage and a mold as a surface plate on the surface plate circulation conveying apparatus.

  As shown in FIG. 1, the mold transport apparatus 2 of the present embodiment includes a surface plate circulation transport apparatus 8 that drives and circulates a plurality of surface plate carriages 6 on which the molds 4 are respectively placed along a closed transport path 22. A molding area 12 having a molding apparatus 10 which molds the mold 4 incorporated in the casting frame 3 and is arranged in parallel with the surface plate circulation conveyance apparatus 8 and a pouring apparatus 14 having a pouring apparatus 14 for pouring the molded mold 4. A pouring area 16 of the plate circulating and conveying device 8 and a cooling area 20 of the surface plate circulating and conveying device 8 for cooling the poured poured mold 18 are provided.

  The surface plate circulating and conveying apparatus 8 is configured by endlessly arranging the surface plate carriage 6 on which the molds 4 and 18 are detachably mounted on the upper surface along a conveyance path 22 closed in a loop shape. As shown in FIG. 3, the transport path 22 includes a rail 22 a and a guide rail 22 b disposed inside the loop of the transport path 22. A pair of wheels 24 that roll on the rails 22 a are arranged on the lower surface of each surface plate carriage 6, and connecting shafts 26 project from front and rear of the wheels 24 located inside the loop among the wheels 24. Has been. A guide roller 28 that rolls along the guide rail 22b is pivotally supported on the connecting shaft 26. The connecting shaft 26 is connected to the connecting shaft 26 of another surface plate carriage 6 adjacent to the front and rear by a connecting link 30. The connecting shaft 26 and the connecting link 30 are sequentially connected so as to be relatively rotatable about a vertical axis, and a loop-like endless connecting body 32 is formed along the transport path 22. A driving sprocket wheel 34 and a driven sprocket wheel 36 are rotatably supported around the vertical axis at both ends of the transport path 22, and both end circumferential portions 38 of the endless coupling body 32 are wound around the driving and driven sprocket wheels 34 and 36. ing. The drive sprocket wheel 34 is rotationally driven by a motor 44 via a sprocket wheel 40 and a roller chain 42. By driving the drive sprocket wheel 34, the surface plate carriage 6 of the surface plate circulation transport device 8 is intermittently indexed and transported by one pitch every predetermined time.

  A molding area 12 is provided in parallel with the platen circulation transfer device 8. In the molding area 12, the casting mold 3 incorporated in the casting frame 3 is molded by sanding into the casting frame 3 that is carried in from a casting frame removal / unloading position 68 (described later) of the surface plate circulation conveying device 8. In the molding area 12, a conveying roller conveyor 46, a casting frame separating device 48, a molding device 10, a reversing machine 50, and a mold matching device 52 are disposed.

  The conveying roller conveyor 46 is extended to the mold matching device 52 by a casting frame separating device 48. A pusher device 53 is disposed adjacent to the upstream side of the casting frame separation device 48, and the plurality of casting frames 3 arranged in series by the pusher device 53 are pressed on the conveying roller conveyor 46 one pitch at a time to the downstream side. It is designed to be transported.

  The casting frame separating device 48 includes an unillustrated gripping claw that grips the upper mold and the lower mold casting frame, an unillustrated lifting cylinder that raises and lowers the gripping claw, and the overlapped casting frame 3. And a reciprocating cylinder (not shown) which is separated into every three and is gripped by the gripping claws and transported to the transport roller conveyor 46 in front of the molding apparatus 10. The upper and lower casting frames 3 overlapped by the casting frame separating device 48 are separated into an upper die casting frame 3a and a lower die casting frame 3b.

  The molding apparatus 10 includes an unillustrated squeeze table that moves up and down and performs squeeze from below, and an unillustrated overlay that superposes the cast frame 3 (for upper mold or lower mold) incorporating a model on the squeeze table. A frame, a hopper for putting casting sand into the polymerized casting frame and the upper frame, and a squeeze head (not shown) for squeezing the casting sand from above to form an upper die or a lower die. . With this molding apparatus 10, the mold 4 sanded into the casting frame 3 and incorporated into the casting frame 3 is separately molded as an upper mold or a lower mold. Each molded mold 4 is conveyed to a reversing machine 50 by a conveying roller conveyor 46.

  The reversing machine 50 reverses the lower mold formed in the lower mold casting frame 3b up and down, and two rows of upper and lower roller conveyors are arranged in a drum that can be indexed 180 degrees around an axis parallel to the conveying direction. Provided in parallel with the transport direction, one roller conveyor is aligned with the transport roller conveyor 46 when the drum is positioned at one rotational end, and the other roller conveyor is transported roller conveyor 46 when positioned at the other rotational end. Configured to align. As a result, the lower mold carried on one roller conveyor of the reversing machine 50 is reversed by the rotation of the drum by 180 degrees, placed on the other roller conveyor, and placed on the other roller conveyor by the aligned conveying roller conveyor 46. It is conveyed to the front of the aligning device 52.

  The mold aligning device 52 includes an unillustrated lifting device having a pair of unillustrated support arms capable of supporting the mold 4 from both sides. When the upper mold is carried into a predetermined position of the mold aligner 52, the upper mold is supported by the support arm, the support arm is raised by the lifting device, and the upper mold is made to stand by at the upper standby position, and then the lower mold is moved. When the mold is carried into a predetermined position, the upper mold is moved down so as to be superposed on the carried-in lower mold. A cushion device 55 is provided adjacent to the downstream side of the mold matching device 52, and the cast frame (mold) that is pressed and conveyed by the push device 53 is smoothly decelerated and stopped.

  The mold 4 having undergone mold matching is carried into a mold carry-in position 56 of the surface plate circulating and conveying apparatus 8 by a mold carry-in apparatus 54 as a mold carry-in apparatus adjacent to the mold aligning apparatus 52. The mold carry-in device 54 extends from a position adjacent to the mold aligning device 52 to a mold carry-in position 56, an unillustrated clamping arm that holds the mold 4 sandwiched from both sides, an unillustrated lifting device that raises and lowers the clamping arm. An existing transfer rail, and a drive transfer device for transferring the holding arm along the transfer rail. The mold 4 placed on the surface plate carriage 6 indexed at the mold carry-in position 56 is sent by the surface plate circulation transfer device 8 by 1 pitch and transferred to the pouring area 16.

  A pouring area 16 is provided on the downstream side of the mold carry-in position 56 in the surface plate circulation transfer device 8, and a pouring device 14 for pouring molten metal into the mold 4 is provided in the pouring area 16. . When the ladle is empty, the pouring device 14 moves to a melting furnace (not shown) and replenishes the molten metal.

  As shown in FIG. 2 and FIG. 3, the poured mold 18 poured in the pouring area 16 is conveyed one pitch at a time on the surface plate circulation conveyance device 8 to cool the surface plate circulation conveyance device 8. Cooled in area 20. The cooling area 20 includes a first cooling area 62 and a second cooling area 64, and the first cooling area 62 is cooled until the molten metal is below the freezing point. The area of the first area 62 is set in accordance with the product that requires the longest cooling time among the products to be produced. For example, when the metal is cast iron, the first area 62 has a freezing point of 1145 ° C. or lower. It will be cooled until.

  Between the first cooling area 62 and the second cooling area 64, a cast-frame removal position 68 is provided adjacent to the downstream side of the rear end of the first cooling area 62. A cast-frame removal / unloading device 66 is provided at the cast-frame removal / unloading position 68. As shown in FIG. 5 to FIG. 8, the cast-frame removal / unloading device 66 moves the arm to a horizontal position (open state) and a vertical position (closed state) by hydraulic drive, and grips the cast frame 3 in the closed state. A gripping arm 70; a lifter 72 that is driven by a hydraulic cylinder to raise and lower the gripping arm 70; and a mold pressing device 74 that is driven by a hydraulic cylinder and includes a piston portion 75 that holds the mold (a poured mold) 18 from above. A moving device 76 that has a drive wheel and a guide rail and moves the gripping arm 70 in a direction perpendicular to the conveying direction of the surface plate circulation conveying device 8, and a conveying conveyor 78 that conveys the casting frame 3 to the molding area 12. It has. The cast frame 3 is removed from the poured molten metal mold 60 cooled in the first cooling area 62 by the cast frame removal / conveying device 66, and the removed cast frame 3 is removed from the mold forming area 12 continuously with the removal of the cast frame 3. It is designed to be carried out to the molding process.

  As shown in FIG. 2 or 4, the poured mold 18 from which the cast frame 3 has been removed is further cooled in the second cooling area 64 of the surface plate circulating and conveying apparatus 8 as a frameless mold 19. In the second cooling area 64, for example, when the metal is cast iron, the second cooling area 64 is cooled to a temperature equal to or lower than the transformation point of 720 ° C. so as to ensure mechanical properties necessary for a cast product. On the downstream side of the rear end of the second cooling area 64, a mold unloading device 80 for unloading the frameless mold 19 cooled in the second cooling area 64 is provided. The mold 19 is unloaded at a mold unloading position 82 to a mold unloading area equipped with a shake-out machine (not shown) for taking out the casting.

  The mold carry-out position 82 is provided between the second cooling area 64 and the mold carry-in position 56 into which the molded mold 4 is carried in, and the mold carry-out position 82 and the mold carry-in position 56 are very close to each other. Therefore, a new mold 4 is immediately placed at the mold carry-in position 56 without almost transporting the platen carriage 6 from which the mold 19 has been removed at the mold carry-out position 82 in an empty state.

  The operation of the mold carry-out device 2 configured as described above will be described below with reference to the drawings. The casting frame 3 sent to the molding area 12 from the unloading position 68 for removing the casting frame of the surface plate circulation conveying device 8 is molded by the following device while being conveyed one pitch at a time by the push device 53 on the conveying roller conveyor 46. Each step for is performed. First, the casting mold separating device 48 separates the casting mold 3a for the upper mold and the casting mold 3b for the lower mold, and the separated casting frames 3a and 3b are filled with foundry sand in the molding apparatus 10, respectively. An upper mold and a lower mold are formed. The formed upper mold and lower mold are reversed by the reversing machine 50 and then matched by the mold matching device 52 and combined into one mold 4.

  As shown in FIG. 1, the mold 4 thus molded is placed on the opposite side (the far side) of the surface plate circulating and conveying apparatus 8 across the line of the front surface plate circulating and conveying apparatus 8 by the mold carry-in device 54. It is carried into the upper mold carry-in position 56. The mold 4 carried into the mold carry-in position 56 is conveyed to the pouring area 16 by the surface plate circulation conveyance device 8. The surface plate circulating and conveying apparatus 8 is driven by the drive sprocket wheel 34 that is rotationally driven by the motor 44. As described above, the surface plate carriage 6 on the surface plate circulating and conveying apparatus 8 is intermittent by one pitch every predetermined time. It is indexed and transported. Molten metal, for example, cast iron, is sequentially poured into the casting mold 4 conveyed to the pouring area 16 by a pouring device 14 defined at the pouring position. Similarly, the poured mold 4 is transported one pitch at a time while being transported as a poured mold 18 to the unloading position 68 in the first cooling area 62 on the downstream side of the pouring area 16. To be cooled. In the first cooling area 62, until the molten metal is solidified, for example, when the metal is cast iron, the metal is cooled to 1145 ° C. or less, which is the solidification point as described above.

  Then, when indexed to the casting frame unloading position 68, the casting frame 3 is removed from the mold 18 by the casting frame unloading device 66, and the casting frame 3 is unloaded to the molding area 12. For this purpose, first, when the mold (poured mold) 18 is indexed to the casting frame unloading position 68, the lifter 72 is driven by hydraulic pressure to lower the open gripping arms 70 to the lower portions on both sides of the mold 18. In the lowered position, the gripping arm 70 is closed and the mold 18 is gripped from both sides. Next, as shown in FIG. 5, the piston portion 75 of the mold pressing device 74 is lowered, and the upper surface of the mold 18 is pressed inside the casting frame 3 to hold the state. Next, as shown in FIG. 6, the lifter 72 is driven by hydraulic pressure to raise the gripping arm 70, thereby removing the casting frame 3 from the mold 18. Next, as shown in FIG. 7, the casting frame 3 is further raised to the transport position, and the piston portion 75 of the mold pressing device 74 is raised to the rising end. Next, the moving frame 76 moves the casting frame 3 horizontally above the conveying conveyor 78, the lifter 72 lowers the casting frame 3 to the conveying conveyor 78, and then the gripping arm 70 is opened to bring the casting frame 3 into the conveying conveyor. 78. The placed cast frame 3 is conveyed to a cast frame separating device 48 in the molding area 12.

  In this way, the casting frame 3 is removed from the mold 18 at the casting frame unloading position 68. Therefore, in the surface plate circulating and conveying apparatus 8, the casting of the rear end of the first cooling area 62 is performed from the casting position 56 through the pouring area 16. It is only necessary to secure the number of casting frames to be used up to the frame removal and unloading position 68, and the number of casting frames necessary for use can be greatly reduced. For example, when the cast iron temperature in the molten state at the time of pouring is 1500 ° C., conventionally, cooling on the surface plate circulating and conveying apparatus with the cast frame being applied until the temperature becomes 720 ° C. or less after pouring, Assuming that 80 sets of upper and lower casting frames were used, the casting frames were used until they were cooled to 1145 ° C., the freezing point, as in this embodiment, the temperature dropped by cooling, and the number of casting frames used Is proportional to the number of cast frames used for cooling in the first cooling area 62 while feeding one pitch at a time after pouring, and the number of cast frames used can be greatly reduced by approximately 36 sets. Can do. In addition, since the removal of the casting frame from the mold 18 and the removal of the removed casting frame 3 to the molding area 12 are continuously performed at the casting frame removal position 68, the empty space removed from the casting mold 18 is removed. A space for transporting the casting frame 3 on the surface plate circulating and conveying device 8 can be omitted, and a compact surface plate circulating and conveying device 8 can be obtained.

  The mold 18 from which the cast frame 3 has been removed is fed as a frameless mold 19 by one pitch to the second cooling area 64 on the downstream side of the first cooling area 62 and conveyed. In the 2nd cooling area 64, the metal cooled in the 1st cooling area 62 is further cooled, and the mechanical characteristic required as a casting product is secured. For example, when the metal is cast iron, it is naturally cooled in the second cooling area 64 until the transformation point is 720 ° C. or less as described above, and unnecessary casting as a cast product is prevented. As described above, the second cooling area 64 is provided in the surface plate circulating and conveying device 8 and does not require a dedicated cooling facility such as a cooling line for cooling the mold 19 from which the casting frame 3 has been removed. Cost can be reduced.

  Next, the frameless mold 19 is moved from the rear end portion of the second cooling area 64 to the mold carry-in position 56 by the mold carry-out device 80 at the mold carry-out position 82 to the mold separation area provided with the shake-out machine. It is carried out. In this case, since the mold unloading position 82 where the mold 19 is removed from the surface plate carriage 6 by the mold unloading apparatus 80 and the mold unloading position 56 where the mold 4 molded by the molding apparatus 10 is loaded are close to each other. It is possible to reduce the space for transporting the platen carriage 6 that has been emptied by removing the mold 19 on the platen circulation transfer device 8, and space saving can be achieved.

  In the present embodiment, the casting frame carry-in position 56 is provided at a position on the opposite side of the molding area 12 across the line from the molding area 12 to the surface plate circulation transfer device 8, and the casting frame removal position 68 is provided as the molding area 12. However, the present invention is not limited to this. For example, as shown in FIG. 9, a mold carry-in position 56 is provided near the downstream side of the molding line 12, and a casting frame removal carry-out position 68 is provided on the surface plate circulation. You may provide in the position on the opposite side of the molding area 12 across the line of the conveying apparatus 8. FIG.

  Next, a second embodiment in which the mold conveying method of the present invention is implemented in a mold conveying apparatus will be described below. As shown in FIGS. 10 and 11, the surface plate circulation transfer device 102 of the mold transfer device 100 in the present embodiment includes an upper transfer path 106 that drives a plurality of platen carriages 104 in series and drives in the horizontal direction, A lower conveyance path 108 provided below the upper conveyance path 106 and driving the plurality of platen carriages 104 in series in the opposite horizontal direction, and one of the upper and lower conveyance paths 106, 108. At the end (the left end in FIG. 11), a lowering path 110 for lowering the platen carriage 104 from the upper transport path 106 to the lower transport path 108, and the other of the upper and lower transport paths 106, 108. Ascending path for raising the platen carriage 104 from the lower transport path 108 to the upper transport path 106 at the end (right end in FIG. 11) And a 12. The upper transport path 106, the lower transport path 108, the descending path 110, and the ascending path 112 constitute a closed transport path.

  The upper transport path 106 is configured by horizontally mounting a pair of upper straight rails 114. On the upper straight rail 114, a plurality of surface plate carriages 104 having four rolling wheels at the bottom are arranged in series, and these surface plate carriages 104 are in contact with the front and rear adjacent surface plate carriages 104. It contacts so that it can be separated. A pressing cylinder 116 is disposed on the upstream side (the right side in FIG. 11) of the upper conveyance path 106, and a plurality of platen carts 104 are moved to the downstream side (the left side in FIG. 11) by the pressing cylinder 116 by one pitch every predetermined time. They are indexed and transported one by one. A cushion cylinder 118 is disposed on the downstream side of the upper conveyance path 106, and the plurality of platen carriages 104 conveyed downstream by the pressing cylinder 116 are smoothly decelerated by the cushion cylinder 118.

  A lower transport path 108 is provided below the upper transport path 106, and a lower straight rail 120 is horizontally mounted in parallel with the upper straight rail 114 on the lower transport path 108. A plurality of similar surface plate carriages 104 are arranged in series on the lower straight rail 120, and these surface plate carriages 104 abut against each other so that the adjacent surface plate carriages 104 can be contacted and separated in the same manner. ing. A pressing cylinder 116 is disposed on the upstream side (left side in FIG. 11) of the lower conveyance path 108, and the plurality of platen carriages 104 are moved one pitch to the downstream side (right side in FIG. 11) by the pressing cylinder 116 as described above. It is being transported one by one. A cushion cylinder 118 is disposed on the downstream side of the lower conveyance path 108, and the plurality of platen carriages 104 conveyed downstream by the pressing cylinder 116 by the cushion cylinder 118 are similarly smoothly decelerated.

  A lowering path 110 is configured between the upper conveyance path 106 and the cushion cylinder 118 provided on the downstream side thereof, and between the lower conveyance path 108 and the pressing cylinder 116 provided on the upstream side thereof. A lowering device 122 is disposed. The lowering device 122 includes an elevating rail 126 that is driven up and down in a horizontal state by a hydraulic cylinder 124. The elevating rail 126 is configured to align with the upper linear rail 114 at the rising end and to align with the lower linear rail 120 at the lowering end. The

  A rising path 112 is formed between the upper conveyance path 106 and the pressing cylinder 116 provided on the upstream side thereof, and between the lower conveyance path 108 and the cushion cylinder 118 provided on the downstream side thereof. A lifting device 128 is provided. The elevating device 128 includes an elevating rail 126 that is driven up and down in a horizontal state by a hydraulic cylinder 124. The elevating rail 126 is configured to align with the lower linear rail 120 at the lower end and to align with the upper linear rail 114 at the upper end. The

  As shown in FIG. 10, a molding area 130 including the molding apparatus 10 is provided on the upper conveyance path 106. Since the configuration of the molding area 130 is the same as that of the first embodiment, the description thereof is omitted. As shown in FIG. 10, a mold carry-in position 132 is positioned in the middle of the upstream side of the upper conveyance path 106. The mold 4 molded in the molding area 130 is carried in by the mold carry-in device 133, and the mold 4 is placed on the surface plate carriage 104 indexed to the mold carry-in position 132. Since the mold carry-in device 133 has the same configuration as the mold carry-in device 54 of the first embodiment, the description thereof is omitted. A pouring area 134 including a pouring device (not shown) is provided in the upper conveyance path 106 on the downstream side of the mold carry-in position 132, and is melted by the pouring device into the mold 4 conveyed by the pressing cylinder 116 one pitch at a time. The state metal is poured. A first cooling area 136 is provided in the upper conveyance path 106 on the downstream side of the pouring area 134, and the poured metal is cooled below the freezing point. A second cooling area 138 for further cooling the metal cooled in the first cooling area 136 from the downstream end of the upper conveyance path 106 is provided. The second cooling area 138 includes a lowering device 122, a lower conveyance path 108, and an ascending The apparatus 128 and the upper conveyance path 106 are continuously provided upstream. Between the first cooling area 136 and the second cooling area 138, a casting frame removal / conveying position 140 is provided, and a casting mold (poured mold) is provided by the casting frame removal / conveying device 142 provided in the casting frame removal / conveying position 140. The casting frame 3 is removed from the casting frame 18 and the casting frame 3 is carried out to the molding area 130. Since this structure for removing the casting frame 142 is the same as the structure for removing the casting frame 66 in the first embodiment, the description thereof will be omitted. A mold unloading position 144 is provided in the upper unloading path 106 between the second cooling area 138 and the mold unloading position 132, and a mold (frameless mold) is formed by the mold unloading device 146 provided at the mold unloading position 144. 19 is carried out. Since the mold carry-out device 146 has the same configuration as the mold carry-out device 80 in the first embodiment, the description thereof is omitted. The mold 4 is immediately placed at the mold carry-in position 132 on the platen carriage 104 that is empty after the mold (frameless mold) 19 is unloaded.

  The operation of the second embodiment configured as described above will be described below with reference to the drawings. The mold 4 placed on the platen carriage 104 at the mold carry-in position 132 from the molding area 130 is downstream (FIG. 10 and FIG. 10) by the pressing cylinder 116 on the upstream side (right side in FIGS. 10 and 11) of the upper conveyance path 106. In FIG. 11, the left side) is intermittently sent one pitch at a predetermined interval and conveyed to the pouring area 134. The mold 4 conveyed to the pouring area 134 is poured by a pouring device at a predetermined pouring position to become a poured mold 18. The poured mold 18 is cooled to below the freezing point in the first cooling area 136 on the downstream side of the pouring area 134, and the poured mold 18 that has been cooled to below the freezing point is removed from the casting frame 3 by the casting frame removing and unloading device 142. The removed casting frame 3 is carried out to the molding area 130. The mold 18 from which the cast frame 3 has been removed is conveyed as a frameless mold 19 to the second cooling area 138 on the downstream side of the first cooling area 136 and further cooled. In this case, in the upper conveyance path 106, the frameless mold 19 located at the head is lowered to the upstream side of the lower conveyance path 108 by the lowering device 122 together with the surface plate carriage 104 in accordance with the timing of the one-pitch conveyance. The Also in the lower conveyance path 108, a plurality of platen carriages 104 are similarly conveyed one pitch at a time to the downstream side (right side in FIG. 11) by the pressing cylinder 116 upstream (left side in FIG. 11) of the lower conveyance path 108. Thus, the metal in the mold 19 is further cooled while being conveyed one pitch at a time. Then, the frameless mold 19 positioned at the head is lifted to the upstream side of the upper transport path 106 by the ascending device 128 together with the surface plate carriage 104 in accordance with the timing of transporting the one pitch. The frameless mold 19 placed on the upstream side of the upper conveyance path 106 is conveyed to the mold unloading position 140 by the pressing cylinder 116 and is unloaded by the mold unloading device 146 to a mold unloading area (not shown). The other operations are the same as those in the first embodiment, and will be omitted.

  In the present embodiment, the effect of the first embodiment, the effect of greatly reducing the number of used casting frames and omitting the space for transporting only the casting frames removed from the mold by the surface plate circulation conveying device, In addition to the effect of reducing the space for transporting the platen carriage that has been emptied by removing the mold on the surface plate circulation conveyance device, the surface plate circulation conveyance device 102 has an upper and lower side where the conveyance path uses the space space. Since the two-stage transport paths 106 and 108 are configured, the installation space on the plane can be greatly reduced. In addition, a mold carry-in device 133 that carries the work of carrying the mold 4 and placing the mold 4 on the surface plate carriage 104 from above on the upper conveyance path 106, and a pouring area 134 that requires pouring work from above. Since the first cooling area 136 and the cast-frame removal / unloading device 142, which requires the work of removing the casting frame 3 upward from the mold 18, are provided, the placing work of the casting mold 4, the pouring work and the casting frame are performed. The removal work can be performed smoothly, and it is not necessary to make a large space between the upper conveyance path 106 and the lower conveyance path 108, and space can be saved in the vertical direction.

  Next, a third embodiment in which the mold conveying method according to the present invention is implemented in a mold conveying apparatus will be described below. In the present embodiment, as shown in FIG. 12, the surface plate circulation transfer device 86 includes linear transfer paths 88 arranged in parallel, and the transfer paths 88 are connected to each other by a traverser 84 provided at each end. It constitutes a closed transport path. Each conveyance path 88 is provided with a conveyance rail 90, and a platen carriage 92 having four rolling wheels arranged in series is placed on the conveyance rail 90 so as to be able to contact and separate between the front and rear platen carriages 92. Has been. A pressing cylinder 116 is provided on the upstream side of each conveyance path 92, and the surface plate carriage 92 is intermittently indexed and conveyed by one pitch every predetermined time. A cushion cylinder 118 is provided on the downstream side of each transport path 88, and the transported surface plate carriage 92 is smoothly decelerated and stopped.

  Each traverser 84 includes a pair of transfer rails 85 laid in a direction perpendicular to the transfer rails 90 of the transfer path 88 and a traverser carriage 89 placed on the transfer rails 85. A pair of carriage rails 87 parallel to the transport rail 90 are provided on the upper surface of the traverser carriage 89, and rolling wheels that roll on the transfer rail 85 are provided on the lower face of the traverser carriage 89. The traverser carriage 89 reciprocates so as to communicate between the downstream end of the transport path 88 and the upstream end of the adjacent transport path 88 on the downstream side of the transport path 88. In this case, the carriage rail 87 is aligned with the transport rail 90 at each moving end of the transfer rail 85.

  The platen carriage 92 at the head of the conveyance path 88 is placed on a carriage rail 87 that is pressed by the pressing cylinder 116 and aligned with the conveyance rail 90. The surface plate carriage 92 placed on the carriage rail 87 moves on the transfer rail 85 and is sent to the upstream end of the adjacent conveyance path 88. In that case, the conveyance rail 90 and the carriage rail 87 of the adjacent conveyance path 88 are aligned, and the surface plate carriage 92 on the carriage rail 87 is moved by the pressing cylinder 116 on the upstream side of the adjacent conveyance path 88. It is pressed to move onto the transport rail 90 of the transport path 88 and is connected to a plurality of platen carriages 92 on the transport rail 90. In the same manner, the surface plate carriage 92 is conveyed.

  In the present embodiment, as shown in FIG. 12, a plurality of transport paths 88 in the second cooling area 64 are arranged, and the transport paths 88 are connected to each other by a traverser 84. In this way, a plurality of transfer paths 88 of the second cooling area 64 are arranged, and the transfer paths 88 are connected to each other by the traverser 84, thereby causing the transfer path 88 to meander and not taking up a large installation space. The 64 conveying paths 88 can be extended. Thus, by extending the cooling area, it is possible to cope with the production of cast products that require a long cooling time. Other configurations and functions and effects are the same as those of the first and second embodiments, and thus description thereof is omitted.

  In the above embodiment, the surface plate is moved on the rail as a surface plate carriage having wheels on the lower surface. However, the present invention is not limited to this. For example, the surface plate may be conveyed by rollers. Further, although the casting is made of cast iron, the present invention is not limited to this, and various metals that can be used for casting such as an aluminum alloy, a nickel alloy, and a copper alloy can be used. In addition, after pouring, the cooling time for the poured metal to reach below the freezing point and the cooling time to reach below the transformation point vary greatly depending on the size and shape of the product as a casting, and are therefore shown in the drawings of the embodiments. It is not limited to the length of the cooling area or the number of casting frames, and these can be set as necessary.

The top view of the casting_mold | template conveyance apparatus in 1st Embodiment which concerns on this invention. The figure which shows the surface plate carriage and mold on a surface plate circulation conveyance apparatus. III-III sectional drawing of the surface plate circulation conveyance apparatus of FIG. IV-IV sectional drawing of the surface plate circulation conveyance apparatus of FIG. The figure which shows the action | operation of a cast-frame removal carrying-out apparatus. The figure which shows the action | operation of a cast-frame removal carrying-out apparatus. The figure which shows the action | operation of a cast-frame removal carrying out apparatus. The figure which shows the action | operation of a cast-frame removal carrying out apparatus. The top view which shows another example of a surface plate circulation conveying apparatus. The top view of the casting_mold | template conveyance apparatus in 2nd Embodiment. XI-XI sectional drawing. The top view of the casting_mold | template conveyance apparatus in 3rd Embodiment. The top view which shows the conventional mold conveyance apparatus. The top view which shows the conventional mold conveyance apparatus.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Mold conveying apparatus, 3 ... Casting frame, 4 ... Mold, 6 ... Surface plate (surface plate cart), 8 ... Surface plate circulation conveyance apparatus, 10 ... Molding apparatus, 12 ... Molding area, 14 ... Hot water pouring apparatus, 16 ... pouring area, 18 ... poured mold, 19 ... mold without frame, 20 ... cooling area, 22 ... transfer path, 52 ... mold loading device (mold loading device), 62 ... first cooling area, 64 ... second Cooling area 66 ... Casting frame unloading device, 68 ... Casting frame unloading position, 80 ... Mold unloading device, 82 ... Mold unloading position, 84 ... Surface plate circulation conveying device (traverser), 86 ... Surface plate circulation conveying device, 88... Surface plate circulation transport device (transport route) 92... Surface plate (surface plate carriage) 100... Mold transfer device 102... Plate surface circulation transport device 104. Transport path 108 ... Lower transport path 110 ... Lowering path 112 ... Upward path , 132 ... mold carry-in position, 133 ... mold carry-in device, 134 ... pouring area, 136 ... first cooling area, 140 ... cast-frame removal carry-out position, 142 ... cast-frame remove carry-out device, 144 ... mold carry-out position, 146 ... Mold unloading device.

Claims (6)

Provided with a platen circulation transfer device that circulates a plurality of surface plates on which a mold incorporated in a casting frame and a molten mold poured into the mold are respectively placed along a closed transfer path ,
A molding process for molding a mold embedded in the casting frame by sanding into the casting frame;
A mold carry-in step for carrying the mold molded in the molding step into a mold carry-in position on the surface plate circulation transfer device;
A pouring step of pouring molten metal by conveying the mold carried into the mold carry-in position to a pouring area by the surface plate circulation conveying device;
A cooling step of cooling the poured mold poured in the pouring step in the cooling area of the surface plate circulation transfer device;
In a mold conveying method comprising:
Dividing the cooling area into a first cooling area and a second cooling area;
The cooling process includes a first cooling process for cooling the molten metal to a temperature below the freezing point in the first cooling area, and a second cooling for further cooling the metal solidified in the first cooling process in the second cooling area. Process and
The casting frame is removed from the poured mold between the first cooling step and the second cooling step at the casting frame removal carrying position provided between the first cooling area and the second cooling area. A casting mold removing method for carrying out the casting frame removing and carrying out step of carrying out the removed casting frame to the molding step. A platen circulating and conveying device that circulates and drives a plurality of surface plates on which a mold incorporated in a casting frame and a molten mold poured into the mold are respectively placed along a closed conveyance path;
A molding apparatus for molding a mold embedded in the casting frame by sanding into the casting frame;
A mold carry-in device for carrying the mold molded by the mold making device into a mold carry-in position on the surface plate circulation transfer device;
A pouring device for pouring molten metal in the pouring area into the casting mold conveyed from the casting position to the pouring area by the surface plate circulation conveying device;
A cooling area of the platen circulation transfer device that cools the poured mold that has been poured by the pouring device;
In the mold conveying device provided with
The cooling area has a first cooling area that cools the molten metal below the freezing point, and a second cooling area that further cools the metal solidified in the first cooling area,
Between the first cooling area and the second cooling area, a casting frame removal position is provided,
A mold transporting apparatus, comprising: a casting frame removal / conveying device that removes the casting frame from the poured mold and unloads the casting frame to the molding apparatus at the casting frame removal / conveying position. In claim 2,
Between the rear end of the second cooling area and the mold carry-in position, a mold carry-out position is provided close to the mold carry-in position,
A mold conveying apparatus comprising a mold unloading apparatus for unloading the poured mold that has been cooled in the second cooling area at the mold unloading position.   4. The mold transfer apparatus according to claim 3, wherein the second cooling area is an area where the solidified metal is cooled until the mechanical characteristics of the cast product are ensured. In claim 3 or 4,
The surface plate circulation transfer device is:
An upper transport path for driving the plurality of surface plates in series and driving in a horizontal direction;
A lower conveyance path that is provided below the upper conveyance path and drives the plurality of surface plates in series and in the opposite horizontal direction;
A lowering path for lowering the surface plate from the upper transport path to the lower transport path at one end of the upper transport path and the lower transport path;
A rising path that raises the surface plate from the lower conveyance path to the upper conveyance path at the other end of the upper and lower conveyance paths;
A mold transporting apparatus, wherein the plurality of surface plates are driven to circulate in a vertical plane. In claim 5,
The mold transport apparatus, wherein the upper transport path includes at least the mold carry-in device, the pouring area, the first cooling area, and the cast-frame removal device.

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