JP2012045595A - Casting line and sand-stripping method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a casting line and a sand-stripping method, capable of reliably performing the individual management for every casting mold even after the sand-stripping.SOLUTION: The casting line includes a green sand casting sand stripping apparatus. The green sand casting sand stripping apparatus is a one-by-one production type sand stripping apparatus in which the carry-in and carry-out of a casting mold 5 to/from a lattice 3 for separating sand 1 from a material 2 is performed by a mold carry-in pusher 7 and a mold carry-out truck 10 which are independently moved, and a shake-out machine 4 is arranged below the lattice to be lifted/lowered by a lattice lifter 18. A lattice hole closing truck 16 is arranged between the lattice lifted by the lattice lifter and the shake-out machine in an advancing/retracting manner to eliminate any hooking to a lattice surface during the carry-in/carry-out.

Description

  The present invention relates to a casting line and a sand removal method provided with a sand removal device that separates sand and raw material from a mold in a casting cooling process, and more specifically, a sand removal device with a single sand removal device. It relates to a casting line and a sand removal method.

  Conventionally, as a method for separating sand and cast product in a cooling process of a casting line, a method in which a poured mold is poured into a drum and separated by rotation, vibration and sprinkling (see Patent Document 1), There has been a method (see Patent Document 2) in which a mold to be conveyed on a casting line is placed on a vibrator and disassembled and separated by vibration.

JP-A-5-0138332 JP 2003-010962 A

  However, the method and apparatus described in Patent Document 1 have a problem in that it is difficult to individually manage each mold in the post-process because a large number of molds cannot be placed in the drum and sand removal can be performed for each mold. It was.

  In the method and apparatus described in Patent Document 2, a mold containing a material punched up from a casting frame (casting frame) is transferred to a vibrator by a pusher or a gripping means, and sand is dropped by the vibration of the vibrator. ing. Next, the material from which the sand has been removed and the sand has been separated is pushed out by a pusher and transferred to a cooling basket. Here, since it is punched up one by one from the casting frame, it looks as if management for each mold can be performed.

  However, the mold is left in the vibrator for some reason until it is crushed by the vibration of the vibrator and transferred to the cooling basket, and then transferred to the cooling basket together with the material of the mold that has been fed. May be posted. Therefore, there has been a problem that individual management for each mold cannot be performed in a later process.

  Therefore, in view of the above circumstances, the present invention provides a casting line capable of reliably performing individual management for each mold even after sand removal by performing sand removal for each mold in the mold after pouring. And to provide a sand removal method.

  The present invention made to solve the above-mentioned problems is a casting line provided with a green sand casting sand removal facility, and the green sand casting sand removal facility carries a mold into a lattice separating sand and material. This is a single sand removal device that uses a mold carry-in pusher that can move independently, and a mold carry-out cart, and a shake-out machine placed below the lattice that is raised and lowered by the lattice lifter. It is characterized in that a lattice hole closing cart is disposed between the lattice raised and the shakeout machine so as to be able to advance and retreat.

  In addition, if the lattice hole closing carriage as described in claim 2 is moved directly under the shakeout machine, the lattice hole is closed, and there is no unevenness when the mold is carried in and out. A structure that can be formed into a sand receiving plate shape is preferable. Further, according to the third aspect of the present invention, there is provided a partition that serves as a mold extruding plate that can be moved up and down and a partition that can be moved up and down at both ends of the mold carry-out carriage, and the structure prevents the material from protruding and dropping from the upper surface of the lattice when sand is dropped. It is preferable that

  The sand removal method according to the present invention is a sand removal method in a casting line according to claim 1, wherein the lattice is moved from the shakeout machine to the lattice hole closing carriage by raising and lowering the lattice while the shakeout machine is fixed. The material is carried in and out by a mold carry-in pusher and a mold carry-out cart in the state of being deposited and stationary.

  According to the present invention, one mold can be carried into a grid on a shake-out machine from a mold carry-in pusher, and the mold can be crushed by shaking the grid by a shake-out machine to remove sand one mold at a time. Therefore, individual management for each mold can be performed even after separation of the foundry sand and the cast material. In addition, the lattice hole closing cart is placed between the lattice lifted by the lattice lifter and the shakeout machine so that it can move forward and backward, so that the mold can be transferred to the lattice by removing the unevenness by closing the lattice with the hole closing cart. It is possible to smoothly remove the material from the grid.

It is a front view of a shake-out machine type sand removal device with a lifting grid + shake-out machine type with a louver grid. It is an AA arrow line view (plan view) of FIG. It is a BB arrow line view (plan view) of FIG. It is CC arrow line view (side view) of FIG. FIG. 2 is a front view of a shake-out machine type sand removal device with a two mold loading lifting grid. FIG. 6 is a DD arrow view (plan view) of FIG. 5. FIG. 6 is a view (plan view) taken along line EE in FIG. 5. 1 is a front view of a shake-out machine with two mold loading elevating grids × 2 units type sand removal device. FIG. It is a FF arrow line view (plan view) of FIG. It is an operation state explanatory view at the time of sand dropping (original position). It is CC arrow line view (side view) of FIG. It is an operation state explanatory view at the time of a lattice rise. It is CC arrow line view (side view) of FIG. It is an operation state explanatory view at the time of carrying a lattice hole closing cart. It is a BB arrow line view (plan view) of FIG. It is CC arrow line view (side view) of FIG. It is an operation state explanatory view at the time of lattice descending. It is CC arrow line view (side view) of FIG. It is an operation state explanatory view at the time of mold carrying in / out. It is an AA arrow line view (plan view) of FIG. It is a BB arrow line view (plan view) of FIG. It is an operation state explanatory view at the time of a lattice rise. It is CC arrow line view (side view) of FIG. It is an operation state explanatory view at the time of a mold carrying cart return. It is an AA arrow line view (plan view) of FIG. It is a BB arrow line view (plan view) of FIG. It is CC arrow line view (side view) of FIG. It is operation | movement state explanatory drawing at the time of a lattice fall and returning to an original position. It is CC arrow line view (side view) of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 4 show a single sand removal device which is a fresh sand casting sand removal device used in the casting line of the present invention. This embodiment is a shake-out machine with a lifting grid + a shake-out machine with a louver grid, and FIGS.

  In this raw sand cast sand dropping facility, a shake-out machine 4 is arranged below the lattice 3 separating the sand 1 and the raw material 2, and the mold 5 can be carried in and out of the lattice 3 independently. This is the structure performed by the carry-in pusher 7 and the mold carry-out carriage 10. The shakeout machine 4 is a fixed type, but the lattice 3 can be moved up and down by a lattice lifter 18, and a lattice hole closing carriage 16 is carried in and out by a cylinder 19 between the raised lattice 3 and the shakeout machine 4. It is supposed to let you. As shown in FIG. 3, the lattice hole closing carriage 16 has a large number of protrusions for closing the lattice 3 on its upper surface.

  The mold carry-in pusher 7 has a structure in which a mold extrusion plate 9 is provided at the tip of the cylinder 8. Loading of the mold 5 before the mold loading pusher 7 is performed by an upstream mold pusher 6 arranged in a perpendicular direction.

  The mold carry-out carriage 10 is provided with a mold extrusion plate 14 that can be moved up and down by a mold extrusion plate lifter 13 on a carriage 12 that reciprocates by a cylinder 11. In order to prevent the material 2 from protruding from the upper surface of the lattice 3 and dropping when the sand is dropped, it is preferable to provide a partition 17 that can be moved up and down on the opposite side of the mold extruding plate 14 that can move the carriage 12 of the mold carry-out carriage 10 up and down. . The mold extruding plate 14 that can be moved up and down also serves as a partition that prevents the material 2 from protruding and falling.

  The lattice 3 and the shakeout machine 4 are separated from each other, and the lattice 3 is mounted on the shakeout machine 4. As described above, the shake-out machine 4 is fixed, and by moving the lattice 3 up and down, the lattice 3 is deposited from the shake-out machine 4 to the lattice hole closing carriage 16, and in a stationary state, the mold carry-in pusher 7; The material is carried in and out by the mold carrying cart 10. Thus, when the lattice 3 is lowered onto the hole closing carriage 16 of the lattice 3 moved directly below the shake-out machine 4, the holes 15 of the lattice 3 are obstructed, so that the mold 5 is not caught when the mold 5 is carried in and out. It has a structure that can be made into a sand receiving plate shape.

  1 to 4 are explanatory views of the structure of the shake-out machine system with a lifting grid + the shake-out machine system with a louvered grid. FIGS. . FIGS. 8 and 9 are diagrams for explaining the structure of a shake-out machine with two molds with a single mold loading / leaving grid.

  Hereinafter, the operation steps of the structure sand removal apparatus of the shakeout machine with lifting grid + shaking out machine with louver grid shown in FIGS.

  First, FIGS. 10 and 11 show operational state diagrams at the time of sand removal (original position). In this original position, the mold carry-in pusher 7 is at the return end (left end in FIG. 10), and the mold carry-out carriage 10 is also at the return end. The lattice lifter 18 is at the lowest end, and the lattice 3 is in contact with the shakeout machine 4. The mold extrusion plate lifter 13 is at the lowest end, and the partition 17 surrounds the side of the lattice 2. The mold 5 placed on the grid 3 in advance by the mold carry-in pusher 7 is vibrated by the shake-out machine 4 in this state, and sand is removed to separate the sand 1 and the material 2. In this state, the lattice hole closing carriage 16 is at the return end (left end in FIG. 11).

  12 and 13 show operation state diagrams when the lattice is raised. After the sand removal is completed, the lattice lifter 18 rises to the rising end and lifts the lattice 3. As a result, the lattice 3 is separated from the shake-out machine 4 and moves upward. The mold extrusion plate lifter 13 also rises to the rising end.

  FIGS. 14 to 16 show operation state diagrams when carrying the lattice hole closing cart. As shown in the figure, the lattice hole closing carriage 16 is moved to the traveling end (the right end in FIG. 16) by the cylinder 19 and enters the lower portion of the lattice 3 in the raised position.

  17 and 18 are diagrams showing the operation state when the lattice is lowered. As shown in the figure, the lattice lifter 18 is lowered to the intermediate position, and the lattice 3 is lowered onto the lattice hole closing carriage 16. As a result, the holes of the lattice 3 are closed, and the sand receiving plate has no irregularities. The mold pusher lifter 13 is also lowered to the intermediate position. In this way, the lattice 3 is deposited in the lattice hole closing carriage and is in a stationary state.

  19 to 21 show operation state diagrams when the mold is carried in and out. As shown in the figure, in this state, the mold carry-out carriage 10 moves to the leading end and unloads the material 2 from the lattice 3 onto the vibrating conveyor 20, and at the same time, the mold carry-in pusher 7 moves to the leading end and the mold 5 is latticed. Carry in on 3. Since the holes of the lattice 3 are closed by the lattice hole closing carriage 16 and have a sand receiving plate shape with no irregularities, these loading and unloading are performed smoothly without being caught. The mold extrusion plate lifter 13 moves in the horizontal direction while moving the material 2 while maintaining the intermediate position.

  22 and 23 show operation state diagrams when the lattice is raised. In this way, after the loading / unloading of the mold is completed, the mold loading pusher 7 returns to the return end. The mold carrying cart 10 is at the end. The lattice lifter 18 rises to the rising end, and the mold extrusion plate lifter 13 also rises to the rising end.

  24 to 27 show operation state diagrams when returning from the mold carry-out carriage. The mold carry-out carriage 10 moves to the return end, and the mold extrusion plate lifter 13 rises to the rising end. The lattice hole closing carriage 16 moves to the return end.

  28 and 29 show operation state diagrams when the lattice descends and returns to the original position. Finally, the lattice lifter 18 descends to the lowest end and descends the lattice 3 to a position where it touches the shake-out machine 4. In this way, the original position shown in FIGS. The same cycle is repeated thereafter to perform sand removal. However, by putting one mold from the mold carry-in pusher and vibrating the lattice with a shakeout machine, the sand can be removed one by one. Even after separation of the foundry sand and the foundry material, individual management for each mold can be performed.

  In the case of the shake-out machine system with a two-mold stacking lifting grid shown in FIGS. 5 to 7, two molds 5 are placed on the grid 3 at the same time, and sand removal is performed in two stages. As shown in FIG. 7, the holes in the lattice 3 and the protrusions in the lattice hole closing carriage 16 are also provided in the second position on the right side more than the first position on the left side. Other structures and operations are the same as those in the above embodiment.

  8 and 9 is the same as FIGS. 5 to 7 except that the shake-out machine with two molds with a lifting and lowering lattice × two units is used, except that the shake-out machine 4 is divided into two units on the left and right. . The order of operation is also the same. In any case, since the holes of the lattice 3 are closed by the lattice hole closing carriage 16 and have a sand receiving plate shape without irregularities, the casting of the mold 5 and the unloading of the material 2 can be performed smoothly without being caught. Done.

DESCRIPTION OF SYMBOLS 1 Sand 2 Material 3 Lattice 4 Shakeout machine 5 Mold 6 Mold pusher 7 Mold carry-in pusher 8 Cylinder 9 Mold extruding plate 10 Mold unloading cart 11 Cylinder 12 Bogie 13 Mold extruding plate lifter 14 Mold extruding plate 15 Hole 16 Lattice hole closing cart 17 Screen 18 Lattice lifter 19 Cylinder 20 Vibrating conveyor

Claims (4)

  A casting line equipped with a green sand casting sand removal facility, wherein the green sand casting sand removal facility includes a mold carry-in pusher that individually moves a mold into and out of a lattice that separates sand and material, and a mold. This is a single sand removal device with a shake-out machine placed at the bottom of the lattice lifted by the lifter and lifted by the lattice lifter. Furthermore, between the lattice lifted by the lattice lifter and the shake-out machine, A casting line characterized in that a hole closing carriage is arranged to be able to advance and retreat.   When the lattice hole closing trolley is moved directly under the shakeout machine, the lattice hole is closed, and there is no catch when the mold is carried in and out. The casting line according to claim 1, wherein the casting line is provided.   2. A partition that serves as a mold extruding plate that can be moved up and down and a partition that can be moved up and down are provided at both ends of the mold carry-out carriage to prevent the material from protruding and dropping from the upper surface of the lattice when sand is dropped. Casting line.   The sand removal method for a casting line according to claim 1, wherein the lattice is moved from the shakeout machine to the lattice hole closing cart by moving the lattice up and down while the shakeout machine is fixed, and the mold is left stationary. A sand removal method characterized in that a material is carried in and out by a carry-in pusher and a mold carry-out cart.

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