JPH09174376A - Cutting chip carrying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry cutting chips while sufficiently and reliably separating cutting chips and cutting oil from each other without unnecessary increasing various costs with a simple structure. SOLUTION: A cutting chip carrying device is provided with a cylindrical casing 2 having a cutting chip throwing-in port 2i and a cutting chip carrying- out port and a screw 3 which is housed and arranged in this cylindrical casing 2 and carries cutting chips to the cutting chip carrying-out port from the cutting chip throwing-in port 2i. A hopper 10 having a throwing-in part 10A in which the cutting chips are thrown, a filtering part 10B having a wire net 13 to filter cutting oil from the cutting chips and a sending-out part 10C to circulate the filtered cutting oil to a tank 30, is arranged so as to face the cutting chip throwing-in port 2i of the cylindrical casing 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting waste conveying device for carrying cutting waste mixed with cutting oil and discharged from a machine tool or the like, and more specifically to separating cutting waste from cutting oil. Regarding the structure.

[0002]

Cutting chips discharged from various machine tools contain a large amount of cutting oil supplied during machining. Therefore, in order to reuse this cutting oil, various well-known separation devices such as a scraper system, a magnet system, a drum system, or a centrifugal separation system have been conventionally provided. Cutting oil is collected and reused by separating it from oil.

[0003]

By the way, in any of the above-mentioned various separating devices, the deoiling rate for cutting chips is insufficient in any of the devices, and it is difficult to reliably separate the cutting chips and the cutting oil. In addition to the above, the structure is complicated, which causes an increase in equipment cost and an increase in running cost. In view of the above situation, the present invention has a simple structure, does not inadvertently increase various costs, and sufficiently and reliably separates cutting waste and cutting oil, while transporting cutting waste and cutting oil. An object of the present invention is to provide a cutting waste transporting device that can perform recovery.

[0004]

In order to achieve the above object, a cutting waste conveying apparatus according to the present invention is installed so as to be inclined with respect to the horizontal direction and has a cutting waste inlet on the outer periphery of the lower end. In addition, a cylindrical casing having a cutting waste discharge port on the outer periphery of the upper end side, and a cutting waste housed and installed in the cylindrical casing and introduced from the cutting waste input port to the cutting waste discharge port based on the rotation operation. Further equipped with a screw that conveys the cutting oil, and a charging unit into which cutting chips containing cutting oil are charged, a filtering unit including a filtering member for filtering the cutting oil from the input cutting chips, and a filtering unit. A hopper having a delivery portion for returning the cutting oil to the tank is provided facing the cutting waste inlet of the cylindrical casing.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings showing one embodiment. As shown in FIGS. 1 and 8, a screw conveyor 1 as a cutting waste conveying device according to the present invention includes a tubular casing 2 and a screw 3 housed inside the tubular casing 2.

As shown in FIG. 1, the cylindrical casing 2 is installed in a manner inclined with respect to the horizontal direction, and has a cutting waste inlet opening upward on the outer periphery of the lower end. While 2i is formed, a cutting waste discharge port 2o that opens downward is formed on the outer periphery of the upper end.

A hopper 10 to be described later is fixed (welded) on the outer periphery of the cylindrical casing 2 so as to face the cutting dust inlet 2i, while a discharge duct 20 to be described in detail later.
However, it is fixed (bolted) so that it faces the cutting waste outlet 2o.
Have been.

On the other hand, the screw 3 housed in the cylindrical casing 2 includes a drive pipe 3A and the drive pipe 3
A drive motor 4 which is composed of screw blades 3B fixed to the outer periphery of A, is installed at the upper end of the tubular casing 2, and is directly connected to the drive pipe 3A. It is rotationally driven to convey the cutting waste toward the carry-out port 2o.

As shown in FIG. 1, the screw conveyor 1 is fixed inside a tank (clean tank) 30 for storing clean cutting oil Oc via a bracket 31 and a column 32, and has a cylindrical shape. The lower half of the casing 2 and the lower half of the hopper 10 are immersed in the clean cutting oil Oc stored in the tank 30, respectively.

Further, in the area below the discharge duct 20 in the screw conveyor 1, a cutting waste container box 40 for receiving the cutting waste S discarded from the exhaust duct 20 is arranged, and a machine tool (not shown). The cutting chips containing the cutting oil discharged from the hopper 10 are conveyed from the cutting chip input port 2i to the cutting chip discharge port 2o based on the rotation operation of the screw 3. Then, it passes through the discharge duct 20 and is dumped into the cutting waste container 4.

As shown in FIGS. 1 to 5, the hopper 1 is
No. 0 is provided with a partition plate 11 and a wire mesh 13 as a filtering member attached to the frame 12.
However, it is attached via angle members 14 and 14, and further, a gutter 15 extending at a slight inclination is provided at the end of the hopper 10.

The hopper 10 has a peripheral wall and a partition plate 1.
Input section 10A divided by 1 and into which cutting waste is input
And a filtering unit 10B having a wire net 13 for filtering cutting oil from the input cutting waste, and a delivery unit 10C including a partition wall 16 and a gutter 15 for returning the filtered cutting oil to the tank 30. I have it.

On the other hand, as shown in FIGS. 6 to 8, the discharge duct 20 has a substantially rectangular tube shape, and a discharge opening 20a is formed in the lower portion thereof, and a cylinder is formed in the lower corner portion. The cutting oil sump 20A is defined so as to face the cutting waste carry-out port 2o of the cylindrical casing 2.

The discharge duct 20 is provided with a wire net 21 as a filtering means so as to cover the cutting oil sump 20A, and the clean cutting oil Oc filtered by the wire net 21 is stored in the cutting oil sump 20A. It will be stored.

Further, a reflux pipe 22 for sending out the cutting oil Oc stored in the cutting oil sump 20A to the tank 30 is connected to the discharge duct 20, and the reflux pipe 22 is connected to the tank as shown in FIG. It is extended toward the inside of 30.

On the other hand, as is clear from FIG. 6, the screw blade 3B of the screw 3 has a downstream end 3e.
Is formed so as to be displaced from the cutting waste carry-out port 2o of the cylindrical casing 2 by the distance T to the upstream region.

As a result, the cutting debris conveyed from the cutting debris inlet 2i to the cutting debris outlet 2o based on the rotating operation of the screw 3 stays in the upstream region of the cutting debris outlet 2o, and the subsequent Will be pushed out to the cutting waste outlet 2o.

Further, as is apparent from FIG. 6, the screw blades 3B of the screw 3 are formed with through holes 3a, 3a ... As cutting oil flow paths.
3a ... each has a diameter of about 5 mm and a central angle of 120 mm.
Is formed by setting the angle to be ° and the downstream end 3e
Is formed over at least the range reaching the liquid level Gl of the mixture G (described later) in the cylindrical casing 2.

When the cutting waste conveying device 1 having the above-described structure is in operation, the cutting waste containing a large amount of cutting oil discharged from a machine tool (not shown), in other words, the mixture G of cutting oil and cutting waste, is generated. As shown in FIG. 2, the large and heavy cutting debris in the mixture G, which are successively thrown into the hopper 10, are
Small shavings float above the mixture G while sinking below the hopper 10.

The large and heavy cutting waste that has sunk below the hopper 10 enters the inside of the cylindrical casing 2 through the cutting waste input port 2i, and is conveyed toward the cutting waste discharge port 2o based on the rotation operation of the screw 3. .

On the other hand, small and light cutting dust floating on the upper part of the mixture G is filtered by the wire net 13 of the filter section 10B of the hopper 10 and, as shown in FIG.
The clean cutting oil Oc that has flowed over the gutter 15 into the gutter 15 is fed into the tank 30 through the gutter 15.

As described above, since the hopper 10 is provided with the wire mesh 13 as the filtering member, even small cutting chips can be removed from the cutting oil, and the cutting chips and the cutting oil can be sufficiently removed with a simple structure. It is possible to separate reliably.

Here, as is apparent from FIG. 2, since the wire net 13 in the filtering portion 10B is installed so as to incline downward from the input portion 10A toward the delivery portion 10C, the lower surface of the wire net 12 is shown. If a certain amount of cutting debris adheres to the wire, it will be separated from the wire net 12 by its own weight and fall.

The lumps of cutting debris separated from the wire net 12 enter the inside of the cylindrical casing 2 through the cutting debris inlet 2i,
Based on the rotation operation of the screw 3, the large and heavy cutting chips are conveyed toward the cutting chip discharge port 2o.

As described above, since the wire net 12 is provided in the inclined posture, the attached cutting waste is separated from the wire net 12 by its own weight, so that the clogging of the wire net 12 can be prevented and the mixture can be prevented. Even if the liquid level Gl of G fluctuates slightly, it is possible to filter the small and light cutting dust floating above the mixture G.

On the other hand, when the cutting waste is conveyed inside the cylindrical casing 2 toward the cutting waste discharge port 2o, it adheres to the cutting waste above the liquid level Gl of the mixture G shown in FIG. The cutting oil present is a gap between the cylindrical casing 2 and the screw 3, and further the through holes 3a, 3a of the screw blade 3B.
It flows down through.

After passing the downstream end portion 3e of the screw blade 3B shown in FIG. 6, the cutting waste is not directly conveyed by the screw blade 3B, so that the cutting dust is at the downstream end portion of the screw blade 3B. It stays in the space between 3e and the cutting waste discharge port 2o, and is pushed toward the cutting waste carry-out port by the subsequent cutting waste.

As described above, when moving in the space between the downstream end portion 3e of the screw blade 3B and the cutting waste discharge port 2o, the cutting oil contained in the cutting waste is transferred to the cylindrical casing 2. It flows downward through the gap with the screw 3 and the through holes 3a, 3a ... Of the screw blade 3B.

After this, the cutting chips pushed out from the cutting chip discharge port 2o by the subsequent cutting chips are discharged from the discharge duct 20.
Is dropped on the wire net 21 provided on the wire mesh 21, and the cutting waste is stagnated on the wire net 21 until a certain amount of subsequent cutting waste is accumulated.

As described above, while the cutting scraps are stagnating on the wire net 21, the cutting oil contained in the cutting scraps is absorbed by the wire nets 2.
The clean cutting oil Oc stored in the cutting oil sump 20 </ b> A is sent to the tank 30 via the return pipe 22.

After this, the cutting chips from which the cutting oil has sufficiently escaped fall from the wire net 21 by accumulating a certain amount,
It will be dumped into the cutting waste container 4 through the opening 20a of the discharge duct 20.

In the above-described cutting waste conveying apparatus 1, since the hopper 10 is provided with the wire net 13 as the filtering member as described above, even small cutting wastes can be removed especially from the cutting oil, which is simple. With the structure, it becomes possible to sufficiently and reliably separate the cutting waste and the cutting oil.

Further, in the above-described cutting waste conveying device 1, the downstream end 3e of the screw blade 3B is located in the upstream region of the cutting waste carry-out port 2o, and the cutting waste is stagnated in the cylindrical casing 2. The cutting oil contained in the cutting scraps is caused to flow off by the above, and the cutting scraps are accumulated on the wire net 21 provided in the discharge duct 20 to filter the cutting oil contained in the cutting scraps. It is possible to separate the cutting oil and the cutting oil sufficiently and reliably.

[0034]

As described above in detail, the cutting waste conveying apparatus according to the present invention has a cylindrical casing having a cutting waste inlet and a cutting waste discharge port, and the cutting waste accommodated and installed in the cylindrical casing. Is equipped with a screw that conveys the cutting waste from the cutting waste input port to the cutting waste carry-out port, and further, a charging portion into which the cutting waste is input, a filtering portion including a filtering member that filters cutting oil from the cutting waste, and a A hopper having a delivery portion for returning the cutting oil to the tank is provided so as to face the cutting waste inlet of the cylindrical casing. In the above configuration, since the hopper 10 is provided with the filter member, it is possible to remove even small chips from the cutting oil. Therefore, the device for transporting chips, according to the present invention, has a simple structure and various costs. It is possible to carry out the cutting waste and collect the cutting oil while sufficiently and surely separating the cutting waste and the cutting oil without inadvertently increasing the number.

[Brief description of the drawings]

FIG. 1 is a fragmentary side elevational view showing an installation mode of a cutting waste transportation device according to the present invention.

FIG. 2 is a cross-sectional side view of essential parts showing the periphery of a cutting waste feeding port of the cutting waste transporting device according to the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a top view showing a hopper of a cutting waste transportation device according to the present invention.

FIG. 5 is a fragmentary end view showing a hopper of a cutting waste transport device according to the present invention.

FIG. 6 is a cross-sectional side view of essential parts showing the periphery of a cutting waste carry-out port of the cutting waste carrier according to the present invention.

7 is a sectional view taken along line VII-VII in FIG.

8 is a sectional view taken along line VIII-VIII in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Screw conveyor (cutting waste conveying device), 2 ... Cylindrical casing, 2i ... Cutting waste input port, 2o ... Cutting waste discharge port, 10 ... Hopper, 10A ... Input part, 10B ... Filtering part, 10C ... Sending part , 13 ... Wire mesh (filter member).

Claims (1)

[Claims] 1. A cylinder which is installed in a manner inclined with respect to the horizontal direction and has a cutting waste inlet on the outer periphery of the lower end and an outlet for cutting waste on the outer periphery of the upper end. -Shaped casing, a screw that is housed and installed inside the cylindrical casing, and that conveys cutting debris containing cutting oil that is input from the cutting debris inlet toward the cutting debris outlet based on the rotation operation, and An input portion provided facing the cutting waste input port, into which cutting waste including cutting oil is input, a filtering portion having a filtering member for filtering the cutting oil from the input cutting waste, and the filtered cutting oil. And a hopper having a sending-out section for returning the waste to a tank.