JPH09201739A - Chip conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent poor operation caused by biting of chips, by providing stopping members for disturbing the outflow of chips from an opening of a cylindrical casing, a drum filter provided with a filtering member on its outer periphery and to be rotated and operated, and scraping members for putting chips dropped inside the drum filter into the opening. SOLUTION: An opening 2A opening upward and deviated in the rotational direction of a screw 3 is provided in the downstream range of a chip inputting port of a cylindrical casing 2. A drum filter 10 is loosely fitted to the cylindrical casing 2 so as to cover the opening 2A. The drum filter 10 is provided with a pair of discs 12R and made of a thin metallic plate on which many small holes are uniformly provided on the outer periphery, and a punching metal 13 for separating chips from cutting oil is fixed. A pair of stopping members 30, 31 are provided in order to disturb the outflow of chips from the opening 2A are provided on the cylindrical casing 2. Four scraping members 40, 40,... for putting chips into the opening 2A are provided inside the drum filter 10.

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]

2. Description of the Related Art Cutting chips discharged from various machine tools contain a large amount of cutting oil supplied during machining, and the cutting oil is recovered by separating the cutting chips from the cutting oil. Re-use has conventionally been performed. The applicant of the present application, in the previous application (Japanese Patent Application No. 6-277960),
As shown in FIGS. 15 to 17, a cylindrical casing B having an opening Bo in the upper half of the peripheral wall in the downstream region of the cutting waste inlet Bi, and a cutting casing housed and installed inside the cylindrical casing B to convey the cutting waste. A window Do which is provided with a screw C and is rotatably loosely fitted to the cylindrical casing B so as to cover the opening Bo, and faces the opening Bo when rotated.
And a cutting dust transporting device A having a drum filter D having a filter member Df covering the window Do on the outer circumference. According to the above-mentioned configuration, the cutting dust thrown into the tubular casing B is cut through the opening Bo of the tubular casing B and the window Do of the drum filter D, and the filtering member Df covering the window Do. While a large amount of cutting oil contained in the scraps is separated, the cutting scraps that have entered the window Do of the drum filter D through the opening Bo of the cylindrical casing B are the edges of the window Do based on the rotating operation of the drum filter D. The portion and the edge of the opening Bo cooperate with each other to finely cut.

[0003]

By the way, in the cutting waste transporting apparatus A having the above-mentioned configuration, as is clear from FIG. 17, the opening Bo of the cylindrical casing B extends to a low position. Most of the waste will spill from the opening Bo of the cylindrical casing B into the drum filter D. On the other hand, in the cutting waste conveying device A having the above-mentioned configuration, the cutting waste spilled inside the drum filter D is tubular casing B.
Since the mechanism for returning to the inner side of the drum filter D is not provided, the cutting dust is always accumulated below the inside of the drum filter D, and in this state, the drum filter D rotates so that the outer periphery of the cylindrical casing B and the inner periphery of the drum filter D. (Filtration member Df)
Dust is caught between the drum filter and the drum filter D
However, there is a problem in that malfunction is caused due to excessive force being applied to the above. In view of the above situation, the present invention separates cutting waste from cutting oil and conveys cutting waste and collects cutting oil while preventing the occurrence of malfunctions caused by the biting of cutting waste as much as possible. It is an object of the present invention to provide a cutting waste transporting device that can perform the above.

[0004]

In order to achieve the above object, in a cutting waste conveying apparatus according to the present invention, an opening for releasing upward is provided on a peripheral wall in a downstream region of a cutting waste input port in a cylindrical casing. In addition to being eccentrically provided in the rotational direction of the above, a blocking member is provided at a pair of edge portions extending along the axial direction of the cylindrical casing in the opening so as to prevent the flow of cutting chips from the opening. Further, in the cutting waste conveying device according to the present invention, a filter member for separating cutting chips and cutting oil is provided on the outer periphery, and the filter member is loosely fitted into the tubular casing in a manner to cover the opening, Is provided with a drum filter that rotates about an axis extending along the axial direction of the drum filter, and a scraping member is provided inside the drum filter that throws the cutting waste that has fallen into the drum filter into the opening of the cylindrical casing. ing.

[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 to 14, 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 and installed 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 a cutting waste inlet 2i opening upward is formed on the outer periphery of the lower end. On the other hand, a cutting waste discharge port 2o that opens downward is formed on the outer periphery of the upper end, and the hopper 4 is fixed to the outer periphery of the tubular casing 2 so as to face the cutting waste input port 2i. In addition, the discharge duct 5 is fixedly provided so as to face the cutting waste carry-out port 2o.

On the other hand, the screw 3 housed in the tubular casing 2 includes a drive pipe 3A and the drive pipe 3
In order to convey the cutting debris from the cutting debris inlet 2i to the cutting debris outlet 2o by the drive motor 6 installed in the cylindrical casing 2, the screw blade 3B is fixed to the outer periphery of A. It is driven to rotate.

Further, as shown in FIG. 1, the tubular casing 2 is provided with a filtering mechanism section 7 including a drum filter 10 described later on the downstream side (right side in FIG. 1) with respect to the cutting waste inlet 2i. It is provided.

Further, as shown in FIG. 1, the screw conveyor 1 is a tank T for storing clean cutting oil Oc.
Is fixed via brackets Ta and Tb, and the cutting waste discharge port Mo of the machine tool M is exposed above the hopper 4, while below the discharge duct 5 via a connection chute Hs. Is installed.

The cutting debris containing the cutting oil discharged from the machine tool M and put into the hopper 4 enters the inside of the cylindrical casing 2 based on the rotation operation of the screw 3, and the cutting debris inlet 2
It is conveyed from i to the cutting waste discharge port 2o, and after cutting oil is separated in the filtering mechanism section 7 on the way, it is sent to the chip conveyor H via the discharge duct 5.

Here, as is apparent from FIG. 3, the hopper 4 has a large opening on the injection side in a tapered shape in order to accommodate a large amount of cutting chips and cutting oil, and the hopper 4 has a cylindrical casing 2. The cutting debris inlet 2i is formed by displacing the cutting debris and cutting oil introduced into the hopper 4 in the rotation direction of the screw 3 (direction of arrow r) so that the cutting debris and cutting oil can easily enter the inside of the tubular casing 2. There is.

On the other hand, as is apparent from FIG. 4, the screw blades 3B of the screw 3 retain the cutting debris in the upstream region of the cutting debris discharge port 2o so that the cutting oil contained in the cutting debris flows down. The downstream end 3e is provided with the cutting waste carry-out port 2
It is formed such that it is located in the upstream region of o.

Further, as is apparent from FIGS. 4 and 5, a plate 3C is attached to the end of the screw 3 on the downstream side of the drive pipe 3A for preventing cutting chips from being pressed against the drive motor 6 side. The plate 3C has bolts 3D, 3D for releasing cutting chips.
Is installed.

As shown in FIGS. 6, 8 and 9, the peripheral wall of the cylindrical casing 2 is formed with an opening 2A which is opened upward in the downstream region with respect to the cutting waste inlet 2i. 2A is screw 3 as clearly shown in FIG.
Is provided so as to be deviated in the rotation direction (direction of arrow r).

Further, as shown in FIG. 2 and FIGS. 6 to 9, the drum filter 10 constituting the above-mentioned filtering mechanism portion 7 is loosely fitted in the cylindrical casing 2 so as to cover the opening 2A. There is.

The drum filter 10 has a pair of discs 12 which are connected to each other via four stays 11, 11.
F, 12R, and a thin metal plate having a large number of small holes uniformly formed on the outer circumference of these disks 12F, 12R,
A punching metal (filter member) 13 for separating cutting waste and cutting oil is fixed by fastening bands 14 and 14.

Note that any member other than the punching metal, such as a wire mesh, may be used as the filtering member as long as it can effectively separate the cutting waste and the cutting oil.

The disk 12F and the disk 12R of the drum filter 10 respectively support three ball bearings 15, 15 ... As rollers, and a pair of bearing guides 16F attached to the cylindrical casing 2 are provided.
By running these ball bearings 15, 15 on 16R, the drum filter 10 can freely rotate with respect to the tubular casing 2 about an axis extending in the axial direction of the tubular casing 2.

The bracket 1 is attached to the tubular casing 2.
7, a drive motor 18 is fixedly installed, and a drive sprocket 19A attached to this drive motor 18
And the driven sprocket 19B attached to the disk 12R of the drum filter 10 described above, the transmission chain 19
C is wrapped around, so that the drum filter 10 is
Based on the operation of the drive motor 18, the screw 3 rotates in a direction (arrow R direction) opposite to the rotation direction (arrow r) of the screw 3.

Further, a cleaning nozzle 20 for injecting cutting oil as a cleaning fluid is provided above the drum filter 10, more specifically above the opening 2A of the cylindrical casing 2 and outside the drum filter 10. And a cleaning nozzle 21 for injecting air as a cleaning fluid are provided. In any of the cleaning nozzles 20 and 21, cleaning oil and air for cleaning are used to remove cutting chips from the punching metal 13. Injection is performed toward the opening 2A of the cylindrical casing 2.

The above-mentioned drum filter 10, drive sprocket 19A, driven sprocket 19B, transmission chain 19C, cleaning nozzle 20 and cleaning nozzle 21 and the like, which constitute the filter mechanism 7, are inadvertently cut to the outside. For the purpose of preventing oil from scattering, only the lower part is covered by the opened cover 7C.

As shown in FIGS. 6 and 8 and 9, a pair of blocking members 30 and 31 are attached to the cylindrical casing 2 for the purpose of obstructing the flow of cutting chips from the opening 2A. There is.

These blocking members 30 and 31 have openings 2A.
Of the cylindrical casing 2 extending along the axially extending edges of the cylindrical casing 2, and the blocking member 30 is attached to the lower edge of the opening 2A, while the blocking member 31 is opened in the opening 2A. Is attached to the high edge.

Further, as shown in FIGS. 10 and 11, the tip portion 30A of the blocking member 30 has a comb tooth shape in which the small teeth 30a, 30a ...
Similarly, the front end portion 31A of each of the teeth has a comb tooth shape in which the small teeth 31a, 31a ...

On the other hand, inside the drum filter 10, four scraping members 40, 40 ... For throwing cutting waste into the opening 2A of the cylindrical casing 2 are provided along the center axis of rotation of the drum filter 10, respectively. It is attached to the stays 11, 11 ... In an extended manner.

Further, as shown in FIG. 12, the scraping member 40
Is composed of a flat base portion 40A and a tip portion 40B,
This tip portion 40B is the tip portion 30 of the blocking members 30 and 31.
Like A and 31A, it has a comb tooth shape in which small teeth 40a, 40a ...

Here, the small teeth 30a, 3 of the blocking member 30.
0a, and the small teeth 31a, 31a of the blocking member 31.
, And the small teeth 40a, 40a, ... Of the scraping member 40 relatively move in a meshing manner without buffering each other when the drum filter 10 rotates during operation of the screw conveyor 1.

When the screw conveyor 1 having the above-described structure starts to operate, the screw 3 is rotationally driven by the drive motor 6 in the direction of arrow r in each figure, and the drum filter 10 is driven by the drive motor 18 in the direction of arrow R in each figure. While being driven to rotate, the cutting chips generated in the machine tool M are introduced into the hopper 4 of the screw conveyor 1 from the cutting chip discharge port Mo of the machine tool M together with a large amount of cutting oil.

The cutting debris thrown into the tubular casing 2 through the hopper 4 moves rightward in the tubular casing 2 from the cutting debris inlet 2i in FIG. 1 based on the rotating operation of the screw 3. In this mode, the chips are conveyed obliquely upward toward the cutting waste discharge port 2o and are thrown to the chip conveyor H via the cutting waste discharge port 2o.

On the other hand, based on the rotating operation of the screw 3, it is conveyed inside the cylindrical casing 2 together with the cutting waste,
The cutting oil that has reached the opening 2A of the cylindrical casing 2 flows into the inside of the drum filter 10 through the opening 2A, is filtered by the punching metal 13 of the drum filter 10, and then enters the tank T as clean cutting oil Oc. It is stored.

Here, as shown by the chain line in FIG. 6, the cutting waste S inside the cylindrical casing 2 is moved by the screw 3 which rotates in the direction of arrow r, on the rotation direction side of the screw 3 (right in the figure). (The other side), the cylindrical casing 2 is opened by the screw 2 through the opening 2A.
Since it is formed so as to be deviated to the rotation direction side (left side in the drawing) of the cutting oil, cutting oil overflows from the edge of the opening 2A on the lower side (left side in the drawing), while cutting chips flow out. Will be suppressed as much as possible.

Further, the opening 2 in the tubular casing 2
At the edge of A, as described above, the pair of blocking members 30,
Since 31 (see FIGS. 6, 8 and 9) is attached, the blocking members 30 and 31 also suppress the outflow of cutting chips from the opening 2A.

On the other hand, the cutting waste flowing out from the opening 2A of the cylindrical casing 2 and entering the drum filter 10 is a scraping member 40, 4 provided inside the drum filter 10.
It is returned to the inside of the tubular casing 2 by the action of 0 ...

That is, as shown in FIG. 13, the cutting waste S that has entered the drum filter 10 has its own weight and the drum filter 1.
By the flow of the cutting oil due to the rotation of 0, the oil is accumulated in the corner portion of the scraping member 40 between the base portion 40A and the punching metal 13, and is then carried upward by the movement of the scraping member 40 as the drum filter 10 rotates. Here, the cutting waste S is returned from the inside of the drum filter 10 to the inside of the cylindrical casing 2 by the cutting oil and the air jetted from the washing nozzle 20 and the washing nozzle 21 toward the opening 2A.

Here, the scraping members 40, 40, ... In order to efficiently return the cutting waste to the cylindrical casing 2, as shown in the upper left of FIG. The tip portion 40B is configured to face the opening 2A of the tubular casing 2.

On the other hand, the cutting dust that has entered the drum filter 10 and adhered to the punching metal 13 is also carried upward when the drum filter 10 is rotated, so that the cleaning nozzle 20.
After being removed from the punching metal 13 by the cutting oil and the air sprayed from the cleaning nozzle 21,
It will be returned to the inside of the tubular casing 2.

As described above, in the screw conveyor 1 according to the present invention, the opening 2A of the cylindrical casing 2 is formed so as to be displaced in the rotational direction of the screw 3, and the pair of blocking members 30 are provided at the edge of the opening 2A. , 31 suppress the outflow of cutting chips from the cylindrical casing 2, while the scraping members 40, 40, ... Provided inside the drum filter 10 serve to cut the cutting chips invading the inside of the drum filter 10. Will be positively returned to the inside of the tubular casing 2.

Therefore, in the screw conveyor 1 according to the present invention, cutting debris does not accumulate inadvertently inside the drum filter 10, and in the conventional cutting debris conveying device, it is between the cylindrical casing and the drum filter. It is possible to prevent a malfunction that has been caused by the cutting chips being caught.

Further, according to the screw conveyor 1 of the present invention, since the flow of cutting chips into the drum filter 10 is suppressed, the amount of cutting chips to be filtered in the punching metal 13 is small, so that the drum filter 1
It is possible to prevent the occurrence of overflow from occurring in advance, because the load related to the filtering work for 0 is small.

By the way, as described above, the small teeth 30a, 30a, ... At the tip portion 30A of the blocking member 30.
And the small teeth 31 at the tip 31A of the blocking member 31
, and the small teeth 40a, 40a at the tip end portion 40B of each scraping member 40.
When they rotate, they relatively move in such a manner that they mesh with each other without buffering each other.

Therefore, the small teeth 3 in the blocking member 30.
0a, 30a ..., Small teeth 31a in the blocking member 31,
31a ... and small teeth 40a, 40 of each scraping member 40
The cutting chips caught on a ... Are removed from each other as the drum filter 10 rotates.

In particular, as shown in FIG. 14, based on the operation of the screw 3 rotating in the direction of the arrow r, from the opening 2A in the cylindrical casing 2 to the small tooth 30 of the blocking member 30.
a, 30a ..., and small teeth 31a, 31a of the blocking member 31.
The cutting chips S that try to overflow along the surfaces facing each other move to a position, b position, c position, d position as the drum filter 10 rotates in the direction of arrow R. The scrapers are scraped off by the small teeth 40a, 40a ... Of the scraping member 40 and returned to the inside of the tubular casing 2.

Further, the tip end portion 40B of each of the scraping members 40, 40, that is, the small teeth 40a of the scraping member 40,
.. 40a are bent and formed with respect to the base portion 40A, so that the small teeth 30a, 30a of the blocking member 30 are formed.
, And the small teeth 31a, 31a of the blocking member 31, the small teeth 40a, 40a of the scraping member 40 obliquely invade, thereby scraping the blocking member 30 and the blocking member 31. It is possible to prevent as much as possible the trouble that cutting chips are caught between the lifting member 40 and the lifting member 40.

The blocking member 30, the blocking member 31, and the scraping members 40, 40 ... Are made of elastically deformable thin plate spring material or the like in order to further suppress the occurrence of troubles in which cutting chips are caught. It is also possible to do so.

[0045]

As described above in detail, in the cutting waste conveying apparatus according to the present invention, the peripheral opening of the tubular casing in the downstream region of the cutting waste feeding port has an opening for opening upward in the rotational direction of the screw. In addition to being eccentrically provided, a blocking member is provided at the opening at a pair of edge portions extending along the axial direction of the cylindrical casing so as to obstruct the flow of cutting chips from the opening. Further, in the cutting waste conveying device according to the present invention, a filter member for separating cutting chips and cutting oil is provided on the outer periphery, and the filter member is loosely fitted in the tubular casing in a manner to cover the opening, Is provided with a drum filter that rotates about an axis extending along the axial direction of the drum filter, and a scraping member is provided inside the drum filter that throws the cutting waste that has fallen into the drum filter into the opening of the cylindrical casing. ing. As described above, the opening of the tubular casing is formed to be displaced in the rotation direction of the screw, and the pair of blocking members is attached to the edge portion of the opening to suppress the outflow of cutting chips from the tubular casing. By the action of the scraping member provided inside the drum filter, the cutting waste that has entered the inside of the drum filter is positively returned to the inside of the cylindrical casing. Thus, according to the cutting waste conveying device of the present invention, the cutting waste does not accumulate inadvertently inside the drum filter, and the cutting waste is conveyed between the cylindrical casing and the drum filter in the conventional cutting waste conveying device. It is possible to prevent malfunctions caused by the inclusion of scraps, and prevent the occurrence of malfunctions due to the inclusion of cutting scraps as much as possible, while separating cutting scraps and cutting oil. At the same time, it becomes possible to carry cutting waste and recover cutting oil.

[Brief description of drawings]

FIG. 1 is an overall side view showing an external appearance 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 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.

5 is a sectional view taken along line VV in FIG.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 2 showing the periphery of a drum filter of the cutting waste transportation device according to the present invention.

FIG. 7 is a sectional view taken along line VII-VII in FIG. 2;

FIG. 8 is a sectional side view showing the periphery of a drum filter of the cutting waste transportation device according to the present invention.

FIG. 9 is a sectional view taken along the line IX-IX in FIG. 6 showing the periphery of a drum filter of the cutting waste transportation device according to the present invention.

10 (a) and 10 (b) are a front view and a side sectional view showing a blocking member.

11A and 11B are a front view and a side sectional view showing a blocking member.

12 (a) and 12 (b) are a front view and a side sectional view showing a scraping member.

FIG. 13 is a conceptual sectional view showing an operation mode of a drum filter.

FIG. 14 is a cross-sectional view of an essential part showing a movement mode of a scraping member according to the operation of a drum filter.

FIG. 15 is an overall side view showing a conventional cutting waste transport device.

FIG. 16 is a cross-sectional side view of essential parts showing a conventional cutting waste transport device.

FIG. 17 is a cross-sectional end view of essential parts showing a conventional cutting waste transport device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Screw conveyor (cutting waste conveying device), 2 ... Cylindrical casing, 2i ... Cutting waste input port, 2o ... Cutting waste carry-out port, 2A ... Opening, 3 ... Screw, 10 ... Drum filter, 13 ... Punching metal (filtration) Member), 20, 21 ... Washing nozzle, 30, 31 ... Blocking member, 40 ... Scraping member.

Claims (4)

[Claims] 1. A cutting operation, comprising: a cylindrical casing installed to be inclined with respect to a horizontal direction; and a screw accommodated and installed inside the cylindrical casing, and based on a rotating operation of the screw, cutting including cutting oil. What is claimed is: 1. A cutting waste transporting device for transporting scraps from a cutting waste input port of a cylindrical casing to a cutting waste discharge port, wherein an opening for releasing upward is provided on a peripheral wall in a downstream region with respect to the cutting waste input port. And a cylindrical casing that is offset in the direction of rotation, and a block provided at a pair of edge portions that extend along the axial direction of the cylindrical casing in the opening so as to prevent the flow of cutting chips from the opening. A stop member and a filter member for separating cutting waste and cutting oil are provided on the outer periphery, and the filter member is loosely fitted in the tubular casing in a manner to cover the opening, and the tubular case is also provided. A drum filter that rotates about an axis extending along the axial direction of the thing, and scraps that have fallen inside the drum filter are scraped up based on the rotation of the drum filter, and the opening of the cylindrical casing is opened. And a scraping member provided inside the drum filter so as to be fed into the cutting device. 2. A tip end portion of the blocking member provided on the tubular casing and a tip end portion of the scraping member provided on the drum filter are engaged with each other without buffering each other when the drum filter is rotated. The cutting waste conveying device according to claim 1, wherein the cutting waste conveying device has a comb-teeth shape so as to move relatively in a conforming manner. 3. A cleaning fluid is provided above the opening in the tubular casing and outside the drum filter in order to remove cutting debris from the filtering member. 2. The cutting waste carrier according to claim 1, further comprising a cleaning nozzle for spraying toward the nozzle. 4. The cutting according to claim 1, wherein a rotation direction of the screw with respect to the tubular casing and a rotation direction of the drum filter with respect to the tubular casing are set to be opposite to each other. Waste transport device.