JP5172111B2 - Cast sand removal equipment - Google Patents

Description

  The present invention relates to a sand removal processing apparatus for a casting (work) that removes a sand mold of a casting (work) molded by casting, such as an automobile part, or removes core sand adhering to a hollow portion. In particular, the unpacking process and the sand removal process can be carried out without changing the position and orientation of the casting (work), thus reducing the installation space and further automating the line. The present invention relates to a sand removal processing apparatus for castings (work pieces).

  Many machine parts such as automobile parts are molded by casting. A sand mold is attached to the cast product (work), and a large amount of sand is attached to the hollow portion. The attached sand requires a sand removal operation.

  Conventionally, as this type of sand removal technique, a frame opening device in a casting line described in JP-A-11-138253 is known.

  As shown in the above publication, this known apparatus includes a reverse take-out device 6, a clamp device 23 that clamps the lower frame 3 conveyed to the take-out position by the conveying means, and an open / close gate that covers the upper side of the clamped lower frame. The device 24, the reversing device 19 that supports the clamping device and the open / close gate device and reverses the top and bottom surfaces, the lifting device 15 that supports the reversing device and moves up and down, the lifting device that supports the lifting device and the take-out position and the shaker 7 It is configured with a moving device 10 that reciprocates across the discharge position, and can effectively separate and recover the sound mold sand and baked sand when unpacking the product, impairing sand removal performance. This has the advantage of preventing the occurrence of troubles due to product catching.

  However, in the above-mentioned known apparatus, the sand mold is directly placed on the shaking table and the frame is released by vibration. Therefore, both the position and orientation of the workpiece are in a random state, and the workpiece is transferred to the next process using automatic equipment. In order to do this, it is necessary to detect the current posture and change the workpiece to a posture required by the next process equipment by the positioning equipment. It is generally a very difficult technique to detect this random posture and change it to the required posture, and the equipment becomes complicated and large. Is a difficult process.

  The following are possible reasons why automation is difficult. That is, since sand and burrs are attached to the workpiece, it is difficult to detect the current posture. In the case of image recognition, it cannot cope with changes in the state of adhesion of sand and burrs. Generalized pattern recognition is required and enormous software development costs are required. Mechanical detection is even more difficult because it is not possible to set a reference part for detection.

The present inventor has found that if each process is dedicated, the jig and the sand-crushing tool can be set so that the workpiece after the sand-crushing is stored in the jig, and the present invention has been completed. That is, if the position and posture of the workpiece are determined, it is possible to set a hand for clamping the workpiece while avoiding sand and burrs adhering to the workpiece, and automation of conveyance can be achieved. For this reason, since the workpiece positioning equipment is unnecessary, the equipment is simplified and automation is possible.
JP 11-138253 A

  Therefore, the problem to be solved by the present invention is that the unpacking process and the sand dropping process can be carried out without changing the position and posture of the casting (workpiece), so that each process can be performed. An object of the present invention is to provide a sand removal processing apparatus for a casting (work) which is a dedicated facility, reduces the installation space, further enables automation of the line, and has improved the disadvantages existing in the conventional known technology.

  In order to solve the above-described problems, according to the sand removal apparatus for a cast product of the present invention, the unpacking device for removing the sand mold frame of the cast product cast by the sand mold, and the sand remaining in the cast product which has been unframed. It is characterized by comprising a sand removing device that removes water and a transfer device that conveys between the above steps.

  As described above, the cast sand removal apparatus of the present invention is configured to include the deframement device, the sand removal device, and the transfer device that conveys between the above processes, and by making each process a dedicated facility. The unpacking process and the sand removal process can be performed while maintaining the position and posture of the casting without changing the position, which reduces the installation space and enables the automation of the line.

  Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a flow sheet showing a specific example of a sand removal apparatus for casting according to the present invention. FIG. 2 is a cross-sectional view showing a skewering and unsealing device which is a specific example of the unsealing device. FIG. 3 is a plan view showing an oscillating sand removing device which is a specific example of the sand removing device.

  As shown in FIG. 1, a sand removal processing apparatus A for castings (workpieces) according to the present invention includes a carry-in conveyor 2 for carrying a sand mold 1 a containing, for example, an aluminum product casting (workpiece) 1, and a workpiece. 1 An unframe device 4 that removes the sand mold 3 on the outer periphery, a sand remover 5 that remains inside the unframed workpiece 1, and a carry-out conveyor 6 that carries the removed workpiece 1 out.

  The sand mold 1a conveyed by the carry-in conveyor 2 is transferred to the unpacking device 4 by the transfer device 7 composed of a 6-axis vertical articulated robot, for example, and the sand mold 3 is removed.

  The workpiece 1 from which the sand mold 3 has been removed is transferred by the transfer device 7 via the transfer conveyor 8 and further transferred by the transfer device 7 to the sand removing device 5 where the sand remaining inside the workpiece 1 is removed. The workpiece 1 from which the sand remaining in the interior has been removed is transferred to the carry-out conveyor 6 by the transfer device 7, and the sand treatment is completed.

  Although various devices can be used as the unpacking device 2, for example, a skewer unpacking device B shown in FIG. 2 is used. As shown in FIG. 2, this has a skewer 10 formed by arranging a plurality of pointed rods 9, 9,... 9 in a circular shape, and a sand mold 1a is placed below this skewer. By dropping the holder 10 downward, the sand mold 3 of the sand mold 1a is broken and removed.

  Various types of sand removal devices 5 can be used. For example, a vibrating sand removal device C shown in FIG. 3 is used. As shown in FIG. 3, this is a vibrating sand dropping device C for casting to drop the core sand of the hollow portion 11 of the casting (work) 1 by vibration, and one end 12 is a rubber cushion on the central shaft 14. The vibration base plate 15 placed and held via the vibration base plate, a pair of vibration motors 16 and 16 disposed at symmetrical positions across the central axis 14 on the vibration base plate 15, and the central axis of the vibration base plate 15 14 and a holder 17 of a casting (workpiece) 1 provided at the other end 13 facing the end 14.

  In addition, the workpiece | work 1 of the holder 17 can also be hold | maintained in the slatted box 18 as FIG. 3 shows, and, thereby, the scattering of the core sand dropped from the workpiece | work 1 can be prevented.

  In the vibrating sand drop device C of the present invention having the above-described configuration, the device casting (work) 1 to be sand-washed is held by the holder 17, and then the pair of motors 16 and 16 are operated to vibrate the vibrating base plate 15. Thus, vibration is applied to the workpiece 1 on the vibration base plate held by the holder 17, and the core sand of the hollow portion 11 is dropped by this vibration force.

  In the present invention, the unpacking process and the sand dropping process can be carried out while maintaining the casting (work) position and posture as it is, so that the installation space can be reduced and the line can be automated. Making it possible and highly available in the casting technology field.

It is the flow sheet which showed one specific example of the sand removal processing apparatus of the casting concerning this invention. It is sectional drawing showing the skewered open frame apparatus which is a specific example of the open frame apparatus. It is a top view showing the vibration sand removal apparatus which is one specific example of a sand removal apparatus.

Explanation of symbols

A Sand removal processing apparatus according to the present invention B Skein-breaking frame apparatus C Vibrating sand dropping apparatus 1 Work 1a Sand mold 2 Carry-in conveyor 3 Sand mold frame 4 Unpacking apparatus 5 Sand removal apparatus 6 Carry-out conveyor 7 Transfer apparatus 8 Transfer conveyor 9 Rod 10 Skewer 11 Hollow part 12 One end 13 The other end 14 Center shaft 15 Vibration base plate 16 Vibration motor 17 Holding tool 18 Snow box

Claims (1)

Sand cast aluminum casting is transferred to a skewered sand unpacking device by a transfer device consisting of a 6-axis vertical articulated robot to remove the sand mold, and then the inside of the casting from which the sand mold has been removed. The core sand remaining on the sand removal device is dropped by the vibration of the sand removal device , the skewer sand unpacking device is arranged with a plurality of sharpened rods in a circular shape, and the sand removal device has one end at the central axis. A vibration base plate placed and held on a rubber cushion, a pair of vibration motors arranged at symmetrical positions across the central axis on the vibration base plate, and the central axis of the vibration base plate A casting holder provided at the other end facing each other, and by making each process a dedicated facility, the unpacking process and the sand are held in a state where the casting is held as it is without changing the position and posture. Dropping process can be carried out, equipment space is small Shakeout processing method of the casting, characterized in that to further allow the automation of the line.

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