JP3055902U - Floating chip collecting device - Google Patents

Abstract

(57) [abstract] (with correction) [Problem] Cutting fluid used in machine tools and the like. Grinding fluid. In a circular drum-type floating chip collecting device that captures fine sludge-like chips floating on the liquid surface of a liquid used for recycling such as a washing liquid and a quenching liquid, the collecting surface of the circular drum is repelled and repelled. It is covered with a thin film of oil-based plating to repel the mixed oil brought in from the previous process and the water of the circulating use liquid, and to drop it, and to control the rotation of the drum to promote the fall of oil and water. It discharges dry sludge, purifies the production environment, and simplifies disposal. The floating chip collecting device of the present invention uses a thin film 11 of a water-repellent and oil-repellent plating process on a collecting surface of a circular drum 10 for capturing fine sludge-like chips 3 floating on a tank liquid surface. Covering. In addition, a motor is provided that can change the rotation speed or operate intermittently according to the oil type, viscosity, etc.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The floating chip collecting device of the present invention is used for the liquid surface of a coolant tank containing a sludge-like chip of magnetic material to be circulated and used in a processing mother machine. Since fine sludge-like chips are adsorbed and the fine sludge can be easily removed in a dry condition with little water and oil, the deterioration due to the contamination of the coolant is suppressed and the service life is prolonged. The present invention relates to the prevention of processing troubles related to the coolant, and to the improvement of the disposability of waste sludge-like chips and the cleanliness of the production environment.

[0002]

[Prior art]

 As an example of a device for removing fine sludge-like chips from a circulating coolant in a conventional grinder or other general processing machine, as shown in FIG. 3, a coolant tank 31 is provided with a magnet separator 32 or a paper filter device (see FIG. 3). (Not shown). In the former, it is difficult to adsorb fine sludge-like chips of magnetic material, that is, sludge-like chips of 10 μm or less, which float with bubbles and gradually pollute the inside of the tank, causing rot and odor. In the latter case, the fineness of the mesh of the paper filter greatly affected the renewal pitch due to clogging, and there was a problem in that the relationship with the cleanliness of the coolant was difficult. Furthermore, the common floating chip collecting device with magnet attached to the oil skimmer shown in Fig. 4 adsorbs oil and removes sludge because stainless steel or resin, which is originally lipophilic and hydrophobic, is selected as the material of the drum. And accumulated near the scraper, causing problems such as sludge sticking, oil overflow, and difficulty in processing sludge-like chips wet with oil.

[0003]

[Problems to be solved by the invention]

 In view of the above problems, fine sludge-like chips of magnetic material that float with bubbles on the liquid surface of the coolant tank are adsorbed, easily removed, and the service life of the coolant circulated to the processing mother machine is extended. In addition to this, it is possible to prevent machining troubles related to the coolant beforehand, and to reduce the water content of the coolant and the oil content of the mixed oil as much as possible without removing sludge-like chips that have been eliminated, thereby improving the ease of sludge-like chip treatment. There has been a demand for an improved device.

[0004]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned problem, and the sludge-like cutting is performed on a coolant tank surface of a coolant containing fine sludge-like chips of a magnetic material for a grinding machine or other general processing machine. Even after the removal of the debris, claim 1 has been applied to a rotating drum that is partially immersed below the liquid level in order to eliminate fine sludge-like chips that still float on the liquid level of the coolant with bubbles. Rotating drum type floating chip collecting device equipped with multiple magnets, characterized in that the rotating drum has a rotating drum whose outer surface is coated with plating that excels in water and oil repellency. It is a waste collecting device. In addition, the rotating drum is driven by a DC motor or an inverter motor so that the rotating speed of the rotating drum can be arbitrarily set in order to enhance the oil repellency, and a sufficient time is required for the oil to drop by gravity. The rotation speed can be adjusted to obtain For the same purpose, claim 3 proposes a measure for operating the drive motor intermittently.

[0005]

[Action]

 The floating chip collecting device of the present invention is used for the liquid surface of a coolant tank containing a sludge-like chip of magnetic material to be circulated and used in a processing mother machine. The fine sludge-like chips are adsorbed by a plurality of magnets attached to a rotating drum, part of which is immersed below the tank liquid level, and are rotated and lifted at low speed to dry the fine sludge-like chips with little moisture and oil. Convey to the scraping position in some situations. The oil and moisture lifted at the same time as the fine sludge-like chips are repelled by the water- and oil-repellent plating film of the rotating drum and do not rise to the top of the drum. The difference in oil repellency depending on the type of oil can be adjusted by lowering the speed of the drive motor or by intermittent operation. As described above, since the sludge of the magnetic material can be easily removed by reducing the oil and moisture, the deterioration due to the contamination of the coolant can be suppressed, the service life can be extended, and at the same time, the machining of the coolant with respect to the coolant in the machining base machine can be performed. Trouble can be prevented beforehand.

[0006]

【Example】

 In the floating chip collecting apparatus according to the present invention, a part of the rotating drum 10 is immersed in the coolant 2 of the coolant tank 1 and rotated as shown in FIGS. On the liquid surface of the coolant 2, floating fine sludge-like chips 3 are floating. On the surface of the rotating drum 10, there is a plating film 11 having excellent water and oil repellency. In the prior art, as shown in FIG. 3, since there is no film as shown in FIG. 3, even if water having a large surface tension is repelled, the oil droplets 5 of the mixed floating oil having a small surface tension are removed together with the adsorbed fine sludge-like chips 4. 8 had been discharged. Therefore, the disposal of the fine sludge-like chips 4 was troublesome. However, the surface coating 11 of the rotary drum 10 repelled water and oil, and the fine sludge-like chips 4 became relatively dry. Disposal becomes easier. The surface film 11 of the rotating drum 10 is formed by, for example, plating in which polytetrafluoroethylene (PTFE) particles are dispersed in nickel metal. The contact angle of pure water of this PTFE is 127 degrees, and the water repellency and the oil repellency are high. As a result, the oil droplets 5 fall and do not reach the fine sludge-like chip storage box 9. As a secondary effect, the coefficient of friction is reduced, the slip becomes easier, and the separation of the fine sludge-like chips 4 on the scraper 8 is also improved. Further, a variable speed motor such as an inverter motor or a DC motor is used as the drive motor 7, and the rotation speed is adjusted in response to a change in surface tension due to a change in viscosity due to a change in oil type or temperature of the oil droplet 5. Adjust the time so that it does not go to the fine sludge-like chip storage box 9 side. Alternatively, when the amount of the fine sludge-like chips 4 is small, there is a method of intermittently operating the drive motor 7 for the above purpose.

[0007]

[Effect of the invention]

 The floating chip collecting device of the present invention provides a function to remove fine sludge floating on the liquid surface by adsorbing and removing fine sludge with less moisture and oil. The effect is that cleanliness can be maintained without the accumulation and sticking of fine sludge-like chips in the scraping portion and the overflow of oil and water.

[Brief description of the drawings]

FIG. 1 is a perspective view of a floating chip collecting device of the present invention.

FIG. 2 is a sectional view of the rotating drum of the floating chip collecting device of the present invention.

FIG. 3 shows an example of a conventional coolant tank.

FIG. 4 is a sectional view of a rotating drum of a conventional floating chip collecting device.

[Explanation of symbols]

1. Coolant tank 2. Coolant 3. Floating fine sludge-like chips 4.
Adsorbed floating fine sludge-like chips 5 Oil droplets or water droplets 6 Magnets 7 Drive motors 8 Sharpening plates 9 Floating chip storage boxes 10 Rotating drum 11 Oil-repellent and water-repellent plating layer of rotating drum 32 Magnetic separator 33 Coolant supply pump

Claims (3)

[Utility model registration claims] Claims: 1. Even after removal of sludge-like chips in a coolant containing a sludge-like chip of a magnetic material by a grinding machine or other general processing machine, bubbles remain on the tank surface of the coolant with bubbles. In order to eliminate the floating and accumulated fine sludge-like chips, the outer surface of the rotating drum in a rotating drum type floating chip collecting device with multiple magnets attached to the rotating drum partially immersed below the liquid level Chip collecting device with a rotating drum coated by plating with excellent water and oil repellency 2. A floating chip collecting device for driving a rotary drum with a variable speed motor capable of arbitrarily setting a rotation speed of the rotary drum. 3. A floating chip collecting device according to claim 1, wherein said rotating drum rotates intermittently.