JP2007125569A - Method and apparatus for removing sand from cast product - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for removing molding sand from a cast product, by which method and apparatus, troubles in the work for removing the molding sand from the cast product can be prevented. <P>SOLUTION: The apparatus 10 for removing the sand from the cast product is composed of a carrying apparatus 11 which carries the cast product 15 taken out from a casting flask after casting by putting it on a pallet 16, and a shaker 12 arranged at the side of the carrying apparatus 11, and further comprises a cover body 13 which is arranged over the pallet 16 having the cast product 15 put thereon in the carrying apparatus 11 and has a hole 19 which is opened in the wall surface and has a size capable of preventing the fall of the cast product. The cover body 13 is put on the pallet 16 having the cast product 15 put thereon in the carrying apparatus 11. In such a state, the pallet 16 and the cover body 13 are turned over together, and the cast product 15 is moved from the pallet 16 to the cover body 13, and also the cast product 15 is moved on the shaker 12, and further the cast product 15 is moved again from the cover body 13 to the pallet 16 by turning over them while bringing the pallet 16 into contact with the cover body 13, and the cast product 15 is returned to the carrying apparatus 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cast product sand removing method and cast product sand removing device for removing cast sand from a cast product.

A cast product is manufactured by placing a mold molded from casting sand in a casting frame and pouring molten material into the mold. The cast product after casting is taken out from the casting frame together with the mold, the mold is broken, sand is dropped, and it is conveyed to the cooling process. As conveyance equipment which conveys such a cast product, it describes in Unexamined-Japanese-Patent No. 2003-10962, for example. This publication discloses a sand removal device that, after casting, removes sand by pushing a cast product taken out of a casting frame together with a mold onto a shaker with an extrusion device.
Japanese Patent Laid-Open No. 2003-10962

  After casting, when the cast product is extruded on the shaker, the cast product may be chipped or defective. In addition, since the cast product is simply placed on the shaker to give vibration, the position of the cast product on the shaker becomes unstable. For this reason, after giving a vibration, when pushing a cast product out of a shaker further, the casting product may not be pushed out well and troubles, such as a conveyance device stopping, may also arise.

  The cast product sand removal method according to the present invention includes a cover body in which a hole is formed in the pallet so that the cast product does not fall off in a transport path for transporting the cast product taken out from the casting frame after casting on the pallet. In this state, the pallet and the cover body are turned upside down together, the cast product is transferred from the pallet to the cover body, and the cast product is moved onto the shaker (reverse transfer process). Next, the cast product in the cover body is vibrated by the shaker, and the cast sand attached to the cast product is dropped (sand removal process). Then, after casting sand is dropped, the pallet is applied to the cover body and turned upside down, the cast product is placed on the pallet from the cover body, and the cast product is returned to the conveying path (reverse returning process).

  As one of the apparatuses embodying such a method, the cast product sand removing apparatus according to the present invention includes a transport apparatus for transporting the cast product taken out from the casting frame on a pallet after casting, and next to the transport apparatus. Place the cover body on the installed shaker and the pallet on which the cast product is placed by the transport device, with a hole on the wall where the cast product does not fall off, and the pallet on which the cast product is placed by the transport device. In this state, the pallet and cover body are turned upside down together, the cast product is transferred from the pallet to the cover body, the cast product is moved onto the shaker, and the pallet is placed on the cover body and turned upside down. And a reverse transfer device for transferring the cast product from the cover body to the pallet and returning the cast product to the conveying device.

  According to the cast product sand removal method and the cast product sand removal device, when the cast product is transferred from the conveying path to the shaker, the cast product is held in the area surrounded by the pallet and the cover body, and is turned upside down in this state. The cast product can be transferred from the pallet to the cover body and transferred to the shaker. Further, when the sand is dropped by applying vibration with a shaker, vibration can be applied in a state where the cast product is accommodated in the cover body. In addition, when returning the cast product from the shaker to the transport path, the cast product is held in an area surrounded by the pallet and the cover body, and is turned upside down to be transferred from the cover body to the pallet and returned to the transport path. Can do. Thereby, it is possible to prevent problems such as chipping and sag failure in the cast product.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of a cast product sand removal method and a cast product sand removal apparatus embodying the same according to the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the cast product sand dropping device 10 includes a transport device 11, a shaker 12, a cover body 13, and a reverse transfer device 14.

  The conveyance device 11 carries the cast product 15 taken out from the casting frame after casting on the pallet 16 for conveyance. In this embodiment, the transport device 11 has a structure in which a pallet 16 is placed on a conveyor 17 and transported along a predetermined transport path. Further, the cast product 15 is put on the pallet 16 as it is without taking out the entire mold from the casting frame.

  The shaker 12 is installed beside the transport device 11 at an intermediate position in the transport path of the transport device 11, and shakes the casting sand attached to the cast product 15 by applying vibration to the cast product 15. In this embodiment, the shaker 12 includes a vibrating body 20 protruding upward.

  As shown in FIGS. 2 and 3, the cover body 13 is placed on the pallet 16 on which the casting product 15 is placed by the conveying device 11, and a hole 19 is formed on the wall surface to prevent the casting product 15 from dropping off. ing. In this embodiment, as shown in FIG. 1, the cover body 13 is formed on the bottom surface of the cover body 13 when the cast product 15 is placed on the cover body 13 by the reverse transfer device 14 described later. A slit-like hole 19 is formed in the lateral direction. Further, as shown in FIG. 1, the shaker 12 includes a vibrating body 20 that advances into the cover body 13 from a hole 19 formed in the cover body 13, and when the cover body 13 is placed on the shaker 12. Such a vibrating body 20 has a structure that advances into the cover body 13 and directly contacts the casting product 15 to give vibration to the casting product 15.

  As shown in FIGS. 2 to 5, the reverse transfer device 14 supports the pallet 16 and the cover body 13 in a cantilever state, and covers the pallet 16 on which the casting product 15 is placed by the transport device 11. In this state, the pallet 16 and the cover body 13 are turned upside down together, the cast product is transferred from the pallet 16 to the cover body 13 and the cast product 15 is moved onto the shaker 12.

  In this embodiment, as shown in FIG. 2, the reverse transfer device 14 includes a pallet support arm 31, a pallet rotation support part 32, a cover body support arm 33, a cover body rotation support part 34, and a rotation. It is comprised by the dynamic drive part 35 (refer FIG. 1).

  The pallet support arm 31 and the cover body support arm 33 support rotation by a pallet rotation support portion 32 and a cover body rotation support portion 34 disposed at intermediate positions between the transport device 11 and the shaker 12, respectively. . As shown in FIG. 2, the pallet support arm 31 is in a standby state by advancing to the lower side of the pallet 16 sent by the transport device 11, and as shown in FIG. 16 is gripped. The cover body support arm 33 has a cover body 13 attached to the tip, and covers the pallet 16 sent by the transport device 11 by rotating the cover body 13. The pallet support arm 31 and the cover body support arm 33 connect the pallet rotation support part 32 and the cover body rotation support part 34 to the rotation drive part 35, respectively, and operate the rotation.

  Hereinafter, the cast product sand removal method will be described using the cast product sand removal device 10.

  The cast product sand removal method includes an inversion transfer process, a sand removal process, and an inversion return process.

  In the reverse transfer process, after the casting, the casting product 15 taken out from the casting frame is placed on the pallet 16 and conveyed on the pallet 16, and the pallet 16 is covered with the cover body 13 in this state. The cast product 15 is transferred from the pallet 16 to the cover body 13 and the cast product is moved onto the shaker 12.

  In this embodiment, first, as shown in FIG. 2, the pallet support arm 31 of the reversing transfer device 14 is advanced to the lower side of the pallet 16 in the transport path of the pallet 16 sent by the transport device 11. To wait. The cover body 13 waits slightly above so as not to interfere with the pallet 16 and the cast product 15 sent by the transport device 11. Then, when the casting product 15 is carried on the pallet 16 in the conveying device 11, as shown in FIG. 3, the cover body 13 is rotated downward to cover the pallet 16. Next, as shown in FIG. 4, the cover body support arm 33 is rotated upward together with the pallet support arm 31, and as shown in FIG. 5, the cast product 15 placed on the pallet 16 is moved to the cover body 13. The cast product 15 is placed on the shaker 12. In this way, after the cast product 15 is transferred to the shaker 12, the process moves to the sand removal process.

  The sand removal step is a step of applying vibration to the cast product 15 in the cover body 13 by the shaker 12 and dropping the cast sand attached to the cast product 15. In this embodiment, the shaker 12 includes a vibrating body 20 that protrudes upward. As shown in FIG. 5, when the cover body 13 is placed on the shaker 12, the vibrating body 20 of the shaker 12 It advances into the cover body 13 from the hole 19 formed in the cover body 13. The vibrating body 20 directly contacts the casting product 15 placed in the cover body 13 to give vibration. At this time, the casting sand adhering to the casting product 15 is shaken out of the cover body 13 through the hole 19 formed in the cover body 13. The cast sand that has been shaken off is collected by a foundry sand collection line disposed on the lower side of the cast product sand removing device 10, although illustration is omitted. When the sand removal work by the shaker 12 is completed, the process proceeds to the reverse return process.

  In the reversing and returning process, the cast sand attached to the cast product 15 in the sand dropping process is dropped, and then the pallet 16 is applied to the cover body 13 and turned upside down, and the cast product 15 is placed on the pallet 16 from the cover body 13 by casting. 15 is returned to the transport path.

  In this embodiment, when the sand removal operation by the shaker 12 is completed, the reversing transfer device 14 vertically inverts the cover body 13 placed on the shaker 12 together with the pallet 16 from the cover body 13 to the pallet 16. Then, the cast product 15 is replaced, and the cast product 15 is placed on the pallet 16 and returned onto the conveying device 11.

  At this time, the cover body support arm 33 described above is rotated upward, and the cover body 13 is detached from the shaker 12 upward. As shown in FIG. 4, the pallet 16 supported by the pallet support arm 31 is applied to the opening surface of the cover body 13, and the pallet 16 is returned to the top of the conveying device 11 as shown in FIG. 3. By this operation, the cast product 15 is placed on the pallet 16 from the cover body 13 and returns onto the conveying device 11.

  According to such a reverse transfer device 14, the cast product 15 is held in an area surrounded by the pallet 16 and the cover body 13, and is transferred between the two by the upside down operation of the pallet 16 and the cover body 13. Transferred between the transport device 11 and the shaker 12. At this time, the cast product 15 is surrounded by the pallet 16 and the cover body 13 and does not jump out of this region. Moreover, since it can move between both of them while rolling, there is almost no impact and it does not generate a chipping or a dull defect. As described above, in the operation of transferring between the transfer device 11 and the shaker 12, the cast product 15 can be reliably transferred without causing a problem, and the impact applied to the cast product 15 as compared with the conventional case is also increased. Since it becomes very small, the incidence of defective products can be reduced.

  Further, when the shaker 12 vibrates and drops sand, the cover body 13 can be vibrated in a state where the cast product 15 is accommodated, and since it is held in this region, occurrence of problems can be reduced. Further, when the cast product 15 taken out from the casting frame together with the casting mold is transported on the pallet 16 as it is without being released, the cast product sand removing device 10 is surrounded by the pallet 16 and the cover body 13. The casting product 15 is unframed by cracking the casting mold by moving it to the shaker 12 while rolling in the region, and by applying vibration to the shaker 12, and the casting sand adhered to the casting product 15. Can be dropped. In this way, it is also possible to perform the unraveling and sand removal work in the same process.

  Further, the position of the cast product 15 when the sand removal operation or transfer between the conveying device 11 and the shaker 12 is restricted by the cover body 13, thereby limiting the range in which the cast sand scatters. In addition, the recovery rate of casting sand is greatly improved.

  As mentioned above, although one embodiment of the cast product sand removal method and the cast product sand removal device according to the present invention has been described, the cast product sand removal method and the cast product sand removal device according to the present invention are not limited thereto.

  For example, the shaker 12 has been illustrated in which the vibrating body 20 is advanced from the hole 19 formed in the cover body 13 into the cover body 13 and directly contacts the casting product 15 to give vibration. Any structure may be used as long as it applies vibrations to drop the casting sand, and the structure in which the vibrating body 20 advances into the cover body 13 and directly contacts the cast product is not essential. However, as illustrated, according to the structure in which the vibrating body 20 is advanced into the cover body 13 to directly contact the casting product 15 and give vibration, the casting product 15 can be vibrated more efficiently. The effect of dropping sand is also great. In this case, the shapes of the hole 19 and the vibrating body 20 formed in the cover body 13 are not limited to this, and various configurations can be employed.

The top view of the cast product sand removal apparatus which concerns on one Embodiment of this invention. The cross-sectional side view which shows the use condition (standby position) of the cast product sand dropping apparatus which concerns on one Embodiment of this invention. The cross-sectional side view which shows the use condition of the cast product sand dropping apparatus which concerns on one Embodiment of this invention. The cross-sectional side view which shows the use condition of the cast product sand dropping apparatus which concerns on one Embodiment of this invention. The cross-sectional side view which shows the use condition (sand removal work state) of the cast product sand removal apparatus which concerns on one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cast product sand removal apparatus 11 Conveyor apparatus 12 Shaker 13 Cover body 14 Reverse transfer apparatus 15 Cast product 16 Pallet 17 Conveyor 18 Ceiling wall 19 Hole 20 Vibrating body 31 Pallet support arm 32 Pallet rotation support part 33 Cover body support arm 34 Cover body rotation support portion 35 rotation drive portion

Claims (3)

After casting, a transport device that transports the cast product taken out from the casting frame on a pallet; and
A shaker installed beside the conveying device;
Covered on the pallet on which the cast product is placed by the transport device, and a cover body with a hole to the extent that the cast product does not fall off on the wall surface;
The pallet on which the cast product is placed is covered with the transport device, and in this state, the pallet and the cover body are turned upside down together, and the cast product is placed on the cover body from the pallet and the cast product is placed on the shaker. A casting product sand comprising: a reversing transfer device for moving and reversing the top and bottom while applying a pallet to the cover body and placing the cast product on the pallet from the cover body and returning the cast product to the conveying device Drop device.   2. The cast product sand removal apparatus according to claim 1, wherein the shaker moves a vibrating body into a cover body from a hole formed in the cover body and directly vibrates the cast product to give vibration. After the casting, the pallet and the cover body are placed on the pallet with a cover body with a hole in the wall so that the cast product does not fall off in the transport path for transporting the cast product taken out from the casting frame on the pallet. A reverse transfer process in which the cast product is turned upside down together, the cast product is transferred from the pallet to the cover body, and the cast product is moved onto the shaker;
After the reversal transfer process, the shaker vibrates the cast product in the cover body by the shaker, and the sand removal step of dropping the cast sand attached to the cast product;
And a reversing and returning step of returning the cast product to the conveying path by dropping the cast sand in the sand removal step, inverting the pallet while applying the pallet to the cover body, and placing the cast product on the pallet from the cover body. Characterized casting product sand removal method.

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