JP2017177149A - System for removing sand of casting product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a system for removing sand of casting products which unfailingly removes sand and foreign objects adhering to and remaining in the casting products and enables simplification of the removal process.SOLUTION: A system for removing sand of casting products includes: a lifting device for moving up or down a casting workpiece W; and an ultrasonic cleaning device 1 which cleans the workpiece W to remove foreign objects. The ultrasonic cleaning device 1 includes: a cleaning tank 10 in which cleaning water for cleaning the workpiece W is placed; and an ultrasonic oscillation plate 11 for generating an ultrasonic wave to apply fine vibration to a casting product and clean the casting product. The lifting device causes the casting product to be immersed in the cleaning water in the cleaning tank 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a system for removing foreign matters such as sand remaining in a cast product.

  Aluminum and cast iron castings (workpieces) are widely used as components of various products including automobiles. Many castings have a complicated structure, such as providing an opening by providing large and small holes, or making the inside hollow. The cast product with this complex structure is arranged in a mold that molds the cast product, and a core that matches the structure is placed. Has been.

  Since the core used in the manufacturing process of the cast product is formed of sand or the like, it adheres to and remains on the cast product as foreign matter such as sand after casting. The core is indispensable for casting, but it must be removed after casting because it remains on the casting as foreign matter such as sand. Therefore, as a post-casting process, it is possible to remove sand and other foreign materials by continuously hitting the cast product, or to remove sand and other core materials by installing a sand removal device. It has been broken. For example, Patent Document 1 discloses a workpiece vibrating sand dropping device that drops core sand adhered to a hollow portion of a workpiece by vibration of a cast (work) molded by casting, such as an automobile part. A vibrating sand dropping device is disclosed which is held by a vibrating base plate and dropped by vibrating the vibrating base plate by a single vibration motor.

  Finally, foreign matters such as sand are visually inspected by an operator, and foreign matters such as sand adhering and remaining by manual work are removed with a brush or the like to complete a cast product.

JP 2012-050990 A

  As described above, the removal of foreign matters such as sand remaining after casting requires a complicated process and a manual operation by an operator, which is a bottleneck for simplifying the manufacturing process.

  Further, as the structure of the cast product becomes complicated, the conventional sand removal apparatus cannot reliably remove foreign substances such as sand and tends to increase the burden of visual inspection and removal work by the operator.

  Therefore, the present invention has been made in view of such a problem, and can reliably remove sand and foreign matters adhering to and remaining on a cast product, and can simplify the removal process. The object is to provide a product sand removal system.

  In order to solve the above-mentioned problems, a sand removal system for a cast product according to the present invention is a sand removal system for a cast product that removes foreign matters such as sand adhering to the cast product, and moves the cast product up and down. And an ultrasonic cleaning device for cleaning the cast product to remove foreign matter, the ultrasonic cleaning device includes a cleaning tank containing cleaning water for cleaning the cast product, And an ultrasonic oscillation plate for irradiating the cast product with fine vibrations for cleaning, and the lifting device immerses the cast product in cleaning water in the cleaning tank.

  According to this, since the cast product is swung in the cleaning tank and given a fine vibration by the ultrasonic wave, it is cleaned, so that sand and foreign matters adhering to and remaining on the cast product can be reliably removed. The removal process can be simplified.

  Here, it is preferable that the elevating device includes a rotating unit that can rotate the cast product to adjust the direction of the opening of the cast product.

  As described above, according to the sand removal system for a cast product according to the present invention, sand and foreign matters adhering to and remaining on the cast product can be reliably removed, and the removal process can be simplified. .

It is a figure which shows schematic structure of the sand removal system of a casting. It is a figure which shows the structure of a washing tank. It is a plane schematic diagram of the sand removal system of a casting.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of a sand removal system for a cast product according to the present embodiment. FIG. 2 is a diagram illustrating a configuration of a cleaning tank used in a sand removal system for a cast product. FIG. 3 is a schematic plan view of a sand removal system for a cast product.

  The sand removal system for a cast product according to this embodiment includes a lifting device that lifts and lowers a cast product (work) W, an ultrasonic cleaning device 1 that cleans the work W, and a deaeration for reducing the amount of dissolved oxygen in the cleaning liquid. The apparatus 20, the dirty tank 30, the sand collection | recovery filter 40, the clean tank 50, and the temperature regulator 60 which adjusts the water of the clean tank 50 to appropriate temperature are provided.

  The ultrasonic cleaning apparatus 1 includes a cleaning tank 10 for cleaning the workpiece W by immersing it in cleaning water, and an ultrasonic wave for cleaning the surface of the workpiece W by oscillating the workpiece W to give a slight vibration. An oscillation plate 11, a cleaning nozzle 12 for cleaning the workpiece W with a shower, and an overflow pipe 13 for keeping the water level of the cleaning tank 10 constant are provided.

  The deaerated water supply pipe 21 is a pipe that sends water from the clean tank 50 to the cleaning tank 10, and the deaerator 20 is interposed in the middle of the pipe.

  The dirty tank 30 receives the waste water of the cleaning tank 10 from the overflow pipe 13. The pump P1 is a pump for draining water from the dirty tank 30 so that the water in the dirty tank 30 does not change to alkaline, and the pump P2 is a pump for sending water from the dirty tank 30 to the sand recovery filter 40. .

  The sand recovery filter 40 is a filter that recovers and removes sand in the dirty tank 30 and the cleaning tank 10. The drainage / sand collection pipe 41 is a pipe for collecting drainage and sand from the washing tank 10, and the ejector 42 sucks the drainage and sand from the drainage / sand collection pipe 41.

  The clean tank 50 is a tank for receiving the water filtered by the sand recovery filter 40 and sending it to the cleaning tank 10.

  The lifting device is provided with a rotation mechanism that rotates the workpiece W. The cleaning tank 10 is provided with one ultrasonic oscillation plate 11 on each of three orthogonal surfaces. Among the ultrasonic oscillators 11, those installed on the lower surface of the cleaning tank 10 are installed so as to float from the lower surface. The drainage / sand recovery pipe 41 is connected to the lower part of the cleaning tank 10. The ejector 42 is provided downstream of the pump P <b> 2 that sends water from the dirty tank 30 to the sand collection filter 40. The sand collection filter 40 includes a cyclone filter and a pug filter, and performs a first stage process with the cyclone filter and a second stage process with the pug filter.

  Next, the operation of this system will be described.

  In the sand removal system for cast products according to this embodiment, the workpiece W is submerged in the cleaning tank 10 by the lifting device. At that time, the orientation of the workpiece W is adjusted by the rotation mechanism so that the opening of the workpiece W faces upward and the air inside is removed. Then, the workpiece W is swung in the cleaning tank 10, and ultrasonic cleaning is performed by the output from the ultrasonic oscillation plate 11. At this time, sufficient cleaning ability can be ensured by the output from the three ultrasonic oscillation plates 11. Further, the temperature of the water in the clean tank 50 is adjusted by the temperature controller 60, and the water is sent to the washing tank 10 through the deaerated water supply pipe 21, thereby cleaning due to the rise in the water temperature accompanying the output of the ultrasonic oscillator 11. Capability reduction can be prevented.

  After the ultrasonic cleaning is started, the workpiece W is raised above the water surface of the cleaning tank 10 by the lifting device so that the sand separated inside the workpiece W is discharged to the outside, and the sand together with the water is removed from the workpiece W. To discharge. At this time, the orientation of the workpiece W is adjusted by the rotation mechanism so that the opening of the workpiece W faces downward and the water inside is discharged. Furthermore, the portion where the sand is difficult to escape is pushed away by the water flow by the cleaning nozzle 12. The above is performed alternately with ultrasonic cleaning a plurality of times to clean the workpiece W and remove sand. At this time, the work W is lifted above the water surface of the cleaning tank 10 and is re-introduced into the cleaning tank 10 a plurality of times, so that the amount of dissolved oxygen in the cleaning tank 10 is increased and the cleaning capability is increased. Although it decreases, the water in the clean tank 50 deaerated by the deaerator 20 is always supplied to the cleaning tank 10 through the deaerated water supply pipe 21, thereby preventing a decrease in cleaning capacity. Further, the cleaning tank 10 to which the degassed clean tank 50 is constantly supplied has the overflow pipe 13 so that the water level can be kept constant.

  The sand removed from the work W is deposited in the lower part of the cleaning tank 10. Here, when the pump P <b> 2 that sends water from the dirty tank 30 to the sand collection filter 40 is activated, the ejector 42 becomes negative pressure, and the sand in the washing tank 10 is sucked out through the drainage / sand collection pipe 41. Further, foreign matter contained in the water moved from the cleaning tank 10 through the overflow pipe 13 to the dirty tank 30 is also sent to the sand recovery filter 40 by the pump P2 that sends water from the dirty tank 30 to the sand recovery filter 40. . In the sand recovery filter 40, sand and foreign matters are removed, and the removed water is sent to the clean tank 50. In this way, the sand removed from the workpiece W is collected.

  As described above, according to the sand removal system for cast products of the present embodiment, the workpiece is swung in the cleaning tank and washed by applying a fine vibration by ultrasonic waves, so that it remains attached to the workpiece. Sand and foreign matter can be reliably removed. In addition, it is possible to simplify the removal process by eliminating the need for complicated processes such as a sand removal device and an operator's manual work.

  As mentioned above, although the sand removal system of the cast product which concerns on this invention was demonstrated based on embodiment, this invention is not limited to this, The objective of this invention can be achieved and it does not deviate from the summary of invention. Various design changes are possible within the scope, and they are all included in the scope of the present invention.

  INDUSTRIAL APPLICABILITY The present invention is useful as a sand removal system for a cast product that removes foreign matters such as sand that adheres to and remains on the cast product after casting of aluminum or cast iron.

DESCRIPTION OF SYMBOLS 1 Ultrasonic cleaning apparatus 10 Cleaning tank 11 Ultrasonic oscillation board 12 Cleaning nozzle 13 Overflow pipe 20 Deaeration apparatus 21 Deaeration water supply pipe 30 Dirty tank 40 Sand collection filter 41 Drainage / sand collection pipe 42 Ejector 50 Clean tank 60 Temperature control Machine P1 Pump P2 Pump

Claims (2)

A sand removal system for castings that removes foreign matter such as sand adhering to the castings,
Elevating device for raising and lowering the cast product, and an ultrasonic cleaning device for cleaning the cast product and removing foreign matter,
The ultrasonic cleaning apparatus is
A cleaning tank containing cleaning water for cleaning the casting,
An ultrasonic oscillation plate for cleaning by oscillating the ultrasonic wave and oscillating the casting to give a fine vibration;
The lifting device is configured to immerse a cast product in cleaning water in the cleaning tank. The lifting device is
2. The sand removal system for a cast product according to claim 1, further comprising a rotating unit that allows the orientation of the opening of the cast product to be adjusted by rotating the cast product.