JPH09290346A - Chip conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chip conveying device that can separate chips from cutting oil and carry out the conveyance of chips and recovery of cutting oil in a stable state over a long period of time. SOLUTION: In a screw conveyor 1, a screw 20 installed in a conveying casing is put in rotating action by a driving means 40, and the outer peripheral surface 30o of a filter member 30 installed in the conveying casing is brought into sliding contact with the inner peripheral suface 20i of the screw 20 to support the screw 20 rotatably while putting the filter member 30 in rotating action by the driving means 40 so as to move relatively to the screw 20.

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 treating cutting waste containing cutting oil discharged from a machine tool or the like.

[0002]

Cutting chips discharged from various machine tools contain a large amount of cutting oil supplied during machining. In order to reuse this cutting oil, there is a method to bring cutting chips into a large container and collect the cutting oil accumulated at the bottom of the container.
In this method, since the cutting scraps are brought into the container and the cutting oil is collected from the container by manual labor of the worker, the worker is forced to make a great deal of labor. Therefore, as shown in FIG. 5, a screw conveyor A is used as a conveying device, and a filter (filtering member) A made of wire mesh or the like is provided at the bottom of the outer pipe A1 of the screw conveyor A.
2 is attached, cutting waste from the machine tool B is introduced into the introduction hole A1a of the outer cylinder pipe A1, and a screw (not shown) rotating inside the outer cylinder pipe A1 by the motor A3.
The cutting waste is conveyed and discharged from the discharge hole A1b of the outer cylinder pipe A1, and the cutting oil contained in the cutting waste is caused to flow out to the recovery container C via the filter A2. There is provided an apparatus for simultaneously processing the carrying work and the cutting oil collecting work.

[0003]

By the way, in the conveying device having the above-mentioned structure, when the filter is clogged with fine cutting dust, it becomes difficult to sufficiently separate the cutting dust and the cutting oil. Therefore, in a conventional conveying device, a method is used in which a brush is attached to a screw, and the cutting dust adhering to the filter is swept off by the operation of the brush accompanying the rotation of the screw. However, as described above, in the method of sweeping off the cutting waste with the brush, the flexible brush easily wears due to repeated sliding contact with the filter,
Since the filter is clogged within a short period of time, it has been difficult for the conventional conveying device to separate the cutting waste and the cutting oil in a stable state for a long period of time. In view of the above situation, the present invention provides a cutting waste transporting device capable of separating cutting waste and cutting oil in a stable state for a long period of time, and carrying cutting waste and collecting cutting oil. It is a thing.

[0004]

SUMMARY OF THE INVENTION A cutting waste conveying apparatus according to the present invention includes a conveying casing having a cutting waste inlet and a cutting waste discharge port and installed in an inclined manner with respect to a horizontal direction, and a coil shape. And a screw that is housed and installed in the carrying casing and is rotated by the driving means, and further has a filtering member that is cylindrical with a lid and is housed and installed inside the carrying casing. The bottom opening of the cylindrical transfer casing facing the lower end opening of the cylindrical transport casing, and the outer peripheral surface of the screw slidingly contacts the inner peripheral surface of the lower end of the screw to rotatably support the screw and operate the screw. The filtering member is rotationally operated in a manner of moving relative to the screw by the driving means.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings showing one embodiment. 1 to 4 show a processing facility that employs a cutting waste transport device according to the present invention. This processing facility includes a screw conveyor 1 as a cutting waste transport device, a machine tool M, and a cutting oil tank T. It has.

As shown in FIGS. 1 and 2, the screw conveyor 1 has a carrying casing 10, a screw 20 and a filtering member 30 housed and installed inside the carrying casing 10, and further the screw 20 and the filtering member. A drive means 40 for rotating the 30 is provided.

The transport casing 10 is installed in a manner inclined with respect to the horizontal direction, and a cutting waste inlet 10i opening upward is provided at the outer periphery of the lower end, and an outer periphery of the upper end is provided. Is provided with a cutting waste discharge port 10o that opens downward. Further, the transport casing 10 has a U-shaped cross-sectional shape over the entire length, and a casing cover 11 is fixedly provided on the upper edge of the transport casing 10 leaving a cutting waste inlet 10i.

As shown in FIGS. 1 to 4, the screw 20 housed inside the transport casing 10 is formed by winding a strip-shaped plate material in the shape of a hollow coil, and is a cutting waste of the transport casing 10. Large-diameter portion 20A facing the input port 10i and the cutting waste discharge port 10 of the transport casing 10
The straight portion 20C facing the o, and the taper portion 20 provided between the large diameter portion 20A and the straight portion 20C.
It consists of B and.

The straight portion 20C has a screw 2
Screw support pipe 21 extending coaxially with the central axis of 0
It is wound around and is fixed to the screw support pipe 21 by means such as welding.

The large diameter portion 20A of the screw 20
In addition, a filter member 30 described later is loosely fitted, and the support pipe 22 bolted to the screw support pipe 21 is supported by the upper end wall 12 of the transport casing 10 via a bearing. The screw 20 is rotatably supported on the transport casing 10.

Like the screw 20, the filter member 30 housed and installed in the transport casing 10 is a member having a cylindrical shape with a lid and an open bottom, which blocks the passage of cutting chips and permits the passage of cutting oil. Has a cylindrical thin plate in which a large number of small holes are densely formed, and this thin plate is made of a suitable material such as a metal plate called punching metal having a large number of small holes or a metal mesh (wire mesh). It is configured.

A bearing sleeve 31 is fixed to the outer periphery of the bottom side of the filter member 30 by welding or the like, and the bottom opening 30a is exposed to the opening 13a of the lower end wall 13 of the transport casing 10. The filter member 30 arranged in the manner described above is rotatably supported with respect to the transport casing 10 by sliding a bearing sleeve 31 in sliding contact with a support 14 fixed to the lower end wall 13.

Further, the outer diameter of the filtering member 30 is
The inner diameter of the large diameter portion 20A of the screw 3 is set to be slightly smaller, and the filtering member 30 is
By penetrating into the large diameter portion 20A of 0, when the screw 20 rotates in a manner described later, the inner peripheral surface 20i of the screw 20 and the outer peripheral surface 30o of the filtering member 30 are in sliding contact with each other. Become.

Further, the screw support pipe 21 and the support pipe 22 described above are passed through the end portion of the filter member 30, and the screw support pipe 21 is inserted through a bearing.
A drive shaft 32 rotatably supported is connected to the drive shaft 32.

On the other hand, as shown in FIG. 4, a motor 41 with a speed reducer is installed at the upper end of the carrying casing 10, and a sprocket 42 and a sprocket 43 are mounted on a drive shaft 41s of the motor 41. Has been.

A sprocket 44 and a sprocket 45 are attached to the support pipe 22 and the drive shaft 32, respectively.
Transmission chains 46 and 47 are wound around the sprocket 43 and the sprocket 43, respectively.

These motor 41 and sprockets 42-4
5 and the transmission chains 46, 47 constitute a driving means 40 for rotating the screw 20 and the filtering member 30. The sprocket 42-
45 and the transmission chains 46 and 47 are covered with a cover 48 as shown in FIG.

Here, as clearly shown in FIG. 4, the diameter of the sprocket 45 is set to be larger than the diameter of the sprocket 44, so that the screw 20 and the filtering member 30 move in the same direction based on the operation of the motor 41. While rotating, the screw 20 rotates at a higher speed than the filtering member 30 based on the difference in reduction ratio from the motor 41, so that the screw 20 and the filtering member 30 relatively move.

The number of rotations and the relative moving speed of the screw 20 and the filter member 30 can be appropriately set based on various conditions of the processing equipment such as the amount of cutting waste and the size of cutting waste. is there. Further, the screw 20 and the filtering member 30 may be configured to rotate in mutually opposite directions depending on various conditions of processing equipment.

On the other hand, a cleaning nozzle 50 is provided inside the filtering member 30 so as to be inserted from the bottom opening 30a, and the cutting oil supplied to the cleaning nozzle 50 causes the cutting oil adhering to the filtering member 30 to be cut. In order to blow off the dust, it is jetted outward from the inner peripheral surface of the filter member 30 through the plurality of nozzle holes 50a, 50a.

In the screw conveyor 1, the cutting waste inlet 10i of the carrier casing 10 faces the discharge chute Ms provided in the machine tool M, and the bottom opening 30a of the filter member 30 is connected to the cutting oil tank T.
It is installed in a manner to face the inside of the.

Further, in the region below the cutting waste discharge port 10o in the transport casing 10, this cutting waste discharge port 10o is provided.
A not-shown cutting debris storage box is provided for receiving and storing cutting debris thrown away from the machine.

A large amount of cutting scraps generated in the machine tool M during the operation of the above-described machining equipment are discharged from the cutting scrap input port 10i of the screw conveyor 1 through the discharge chute Ms provided in the machine tool M. It is thrown into the transport casing 10 together with oil.

Transport casing 1 of screw conveyor 1
The cutting debris thrown in 0 is moved from the cutting debris inlet 10i to the inside of the transport casing 10 based on the rotation of the screw 20 driven by the motor 41 of the driving means 40, as shown in FIG.
It is conveyed diagonally upward toward the cutting waste discharge port 10o in a manner of going right inside, and is thrown into a cutting waste storage box (not shown) via the cutting waste discharge port 10o.

On the other hand, a large amount of cutting oil introduced together with the cutting chips passes through the filtering member 30 located below the cutting chip input port 10i, and the bottom opening 3 of the filtering member 30.
It is discharged to the outside of the transport casing 10 via 0a.

That is, a large amount of cutting oil discharged from the machine tool M together with the cutting chips is removed through the filtering member 30 provided in the transport casing 10, so that the cutting chips and the cutting oil are surely removed. The cutting wastes are separated and discarded into a cutting waste storage box (not shown), while the cutting oil is stored in the cutting oil tank T.

When the screw conveyor 1 is in operation, when the screw 20 is rotating, the inner peripheral surface 20i of the screw 20 is in sliding contact with the outer peripheral surface 30o of the filter member 30 as described above. .

As a result, the fine cutting debris adhering to the outer peripheral surface 30o of the filter member 30 is scraped off by the inner peripheral surface 20i of the screw 20, so that the clogging of the filter member 30 due to the cutting debris is caused. Therefore, the cutting waste and the cutting oil are reliably separated in the screw conveyor 1.

Further, since the screw 20 is formed of a strong material such as spring steel, it does not easily wear even if it is continuously in sliding contact with the filter member 30 during the operation of the screw conveyor 1, so that the filter 20 is filtered. It is possible to reliably scrape off the cutting chips attached to the member 30 for a long period of time.

Further, when the screw conveyor 1 is in operation, the filtering means 30 rotates together with the screw 20 by the driving means 40, so that the deterioration of the filtering ability of the filtering member 30 due to the attachment of cutting chips is prevented as much as possible. can do.

That is, when the filtering member 30 is fixedly installed, fine cutting debris accumulates on the bottom of the filtering member 30 to separate the cutting debris from the cutting oil in the filtering member 30 ( While there is a possibility that the filtration capacity) may be reduced, the filtering member 30 is rotated by the driving unit 40, so that cutting waste does not collect at a specific position in the filtering member 30, and the filtering member is caused by the cutting waste. Inadvertent clogging of 30 is prevented in advance.

Moreover, the cutting oil is sprayed from the cleaning nozzle 50 toward the inner peripheral surface of the filtering member 30, whereby the filtering member 3
The cutting debris adhering to 0 will be removed, and since the filtering member 30 is rotating as described above, the entire circumferential area of the filtering member 30 is washed with the cutting oil from the washing nozzle 50. Inadvertent clogging of the filter member 30 due to cutting chips is prevented in advance. Note that the cleaning nozzle 50 may be omitted when the transported cutting waste is relatively large and there is no concern that the cutting waste will be clogged with the filtering member 30.

On the other hand, since the filtering member 30 loosely fitted in the large diameter portion 20A of the screw 20 has a large diameter dimension, it has a large filtering ability, and a large amount of cutting oil is produced from the machine tool M together with cutting waste. Even when the cutting oil is thrown in, there is no inconvenience that the cutting oil that has not been separated from the cutting dust overflows from the cutting dust input port 10i of the transport casing 20.

Further, the screw 20 is a large filtering member 3
The large diameter portion 20A has a large diameter portion 20A for setting 0, but the large diameter portion 20A occupies most of the screw 20.
Since it is connected from 0C via the tapered portion 20B, the size of the periphery of the cutting waste discharge port 10o in the screw conveyor 1 is not much different from the conventional device, and therefore the filtration capacity is increased and the screw conveyor is made as small as possible. Can be achieved. The large diameter portion 20 of the screw 20
It goes without saying that A and the size and shape of the filtering member 30 can be appropriately set based on the amount of cutting chips and cutting oil discharged from the machine tool M.

On the other hand, in the above-mentioned screw conveyor 1, the screw 20 is used as a scraper for the filtering member 30, and the filtering member 30 is used for the screw 20.
Since it is used as a support member, the number of component parts is extremely small, manufacturing is easy, and the manufacturing cost can be kept low. Moreover, since the structure is simple, there are very few failures. Becomes

The cutting oil discharged from the screw conveyor 1 to the outside through the filtering member 30 falls into the cutting oil tank T and is stored therein, and is then stored by a machine tool (not shown) such as an oil pump. It is returned to M and used again in the machine tool M.

The cutting waste conveying device according to the present invention is
Needless to say, it can be effectively applied to various machine tools that discharge cutting chips containing cutting oil as a means for transporting the cutting chips and collecting the cutting oil.

[0038]

As described above, the cutting waste conveying apparatus according to the present invention has the cutting waste feeding port and the cutting waste discharging port, and the transportation casing installed in an inclined manner with respect to the horizontal direction, and the coil. A filtering member having a shape and being housed and installed in the carrying casing and rotated by a driving means; and a filtering member having a cylindrical shape with a lid and housed and installed inside the carrying casing. The bottom opening of the member faces the lower end opening of the transport casing, and the outer peripheral surface is slidably contacted with the inner peripheral surface of the lower end of the screw to rotatably support the screw and operate the screw. By the driving means, the filtering member is rotationally operated in such a manner as to move relative to the screw. According to the above configuration,
When the inner peripheral surface of the screw that rotates during operation is in sliding contact with the outer peripheral surface of the filter member, the cutting debris that has adhered to the outer peripheral surface of the filter member is scraped off by the inner peripheral surface of the screw, and thus the cutting debris adheres. The clogging of the filter member due to is prevented in advance. Further, by rotating the filter member while moving the filter member relative to the screw by the driving means that operates the screw, it is possible to prevent cutting chips from accumulating in a specific portion of the filter member during operation, and thus the filter member. It is possible to prevent the deterioration of the filtration capacity due to the attachment of cutting chips to the surface. Further, the screw made of a strong material does not easily wear even if it is repeatedly slidably contacted with the filter member, and therefore scraps of scraps can be scraped off from the filter member for a long period of time. Therefore, according to the cutting waste carrier of the present invention, it is possible to separate the cutting waste and the cutting oil in a stable state for a long period of time, and to carry the cutting waste and collect the cutting oil.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a cutting waste transportation device according to the present invention.

FIG. 2 is an overall side view showing a cutting waste conveying device according to the present invention in a broken manner.

FIG. 3 is a cross-sectional side view of essential parts of a cutting waste transport device according to the present invention.

FIG. 4 is a cross-sectional side view of essential parts of a cutting waste transport device according to the present invention.

FIG. 5 is an overall side view showing a conventional cutting waste transport device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Screw conveyor (cutting waste conveying device), 10 ... Conveying casing, 10i ... Cutting waste input port, 10o ... Cutting waste discharge port, 13a ... Opening (end opening), 20 ... Screw, 20A ... Large diameter part, 20B ... taper part, 20C ... straight part, 20i ... inner peripheral surface, 30 ... filtering member, 30a ... bottom opening, 30o ... outer peripheral surface, 40 ... drive means.

Claims (3)

[Claims] 1. A transport casing 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 a cutting waste outlet on the outer periphery of the upper end. A coil-like shape, which is housed and installed in the inside of the transport casing, and the driving means provided at the upper end of the transport casing directs the cutting waste introduced from the cutting waste input port toward the cutting waste discharge port. A screw that rotates for transport, and is housed and installed inside the transport casing in the shape of a cylinder with a lid, the bottom opening faces the lower end opening of the transport casing, and the outer peripheral surface is the lower end of the screw. The screw is rotatably supported by slidingly contacting the inner peripheral surface of the section, and the screw is attached to the screw by the driving means provided at the upper end of the transport casing. To shavings conveying apparatus characterized by comprising comprises a filtering member which rotates operate in a manner that relative movement, the. 2. The screw has a large-diameter portion that faces a cutting waste input port of the transport casing and inserts the filtering member therein, a straight portion that faces a cutting waste discharge port of the transport casing, and the large-diameter portion. 2. The cutting waste transporting device according to claim 1, further comprising: a taper portion provided between the straight portion and the straight portion. 3. A cleaning nozzle installed inside a filter member having a cylindrical shape with a lid and spraying cutting oil from the inner peripheral surface of the filter member to the outside. The cutting waste transport device described.