JP3086177B2 - Separation device for cutting fluid and cutting chips - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separation device for separating and collecting cutting chips discharged from a machine tool during cutting of a metal material or the like from a cutting fluid.

[0002]

2. Description of the Related Art When cutting a metal material or the like with a machine tool, a cutting fluid such as water in which a cutting oil or a lubricant is dissolved is used to cool and lubricate a cutting tool or a workpiece. ing. Conventionally, a mixture of cutting chips and cutting fluid discharged from a machine tool is separated using a separating device in which an apron conveyor and a scraper conveyor are arranged in two vertically inclined stages. In addition to returning to the tank, the cutting waste is generally transported to a predetermined place and collected.

In the apron conveyor, the bottom of the apron is formed of a wire mesh or the like. I try to put it back. Further, fine cutting debris that has passed through the bottom of the apron together with the cutting fluid and dropped onto the trough is scraped up above the trough by a scraper that slides on the trough and is collected.

[0004]

In the conventional apparatus for separating cutting fluid and cutting chips as described above, the upper apron conveyor and the lower scraper conveyor are driven by independent drive sources, respectively. Two sets of motors each serving as a driving source and a control device for controlling the motors are separately required. Also, if one conveyor stops for some reason, if the operator continues to operate the other conveyor without noticing, incomplete separation will continue,
When one drive source stops, control such as an interlock for immediately stopping the other drive source is required. Therefore, there has been a problem that the structure becomes complicated and the manufacturing cost increases.

Accordingly, the present invention is to solve the above-mentioned problems of the prior art, and to provide an apparatus for separating a cutting fluid and cutting chips having a simple structure, high reliability and a low manufacturing cost. The main purpose is.

[0006]

In order to achieve the above object, the present invention provides an apparatus for separating cutting fluid and cutting chips having a transport surface through which cutting fluid can pass, and a first fluid circulating in a vertical plane. An upper conveyor that conveys cutting chips by an endless chain, a trough that is disposed below the upper conveyor and receives cutting fluid and fine chips that fall through the conveying surface and circulates in a vertical plane. And a lower conveyor having a scraper that conveys the fine cutting chips by slidingly moving the trough bottom surface by the endless chain.

The first endless chain has an upper running portion as a carrying side and a lower running portion as a return side, and the second endless chain has a lower running portion as a carrying side and an upper running portion as a return side. A second sprocket, which rotates coaxially and integrally with the first sprocket that reverses the endless chain from the carrying side to the return side, meshes with the return side of the first endless chain to engage the first endless chain with the first sprocket. The upper conveyor and the lower conveyor are driven synchronously by rotating a sprocket meshing with one of the first endless chain and the second endless chain by a single drive source by interlocking the two endless chains. It is configured to be. In the separating device, it is preferable that the diameter of the second sprocket is larger than that of the first sprocket.

[0008]

When a mixture of the cutting fluid and the cutting chips discharged from the machine tool is supplied onto the conveying surface below the upper conveyor, the cutting chips are conveyed by the first endless chain and collected. On the way, the cutting fluid adhering to the cutting chips flows down through the conveying surface. At this time, the fine cutting chips that could not be filtered off on the transport surface also fall below the transport surface together with the cutting fluid.

[0009] The cutting fluid and fine cutting chips transmitted through the conveying surface of the upper conveyor fall into the trough of the lower conveyor, and the cutting fluid stored in the trough is returned to a tank or the like. On the other hand, fine cutting chips that fall along with the cutting fluid and accumulate on the trough bottom surface are conveyed over the trough by a scraper that slides and moves on the trough bottom surface by a second endless chain, and is collected.

The upper conveyor and the lower conveyor are connected to the first conveyor.
By rotating a sprocket meshing with either one of the endless chain and the second endless chain with a single drive source, the sprockets are driven synchronously. When the diameter of the second sprocket is larger than that of the first sprocket, the conveying speed of the lower conveyor is lower than the conveying speed of the upper conveyor, and the scraper that moves slowly on the trough is used. Can be separated by exuding the cutting fluid contained therein from the fine cutting chips.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a schematic structure of a device for separating cutting fluid and cutting chips according to the present invention. The separating device 1 includes an upper conveyor 2 that conveys cutting chips discharged from a machine tool at an obliquely upward position, and It comprises a lower conveyor 3 arranged in parallel below the upper conveyor. The upper conveyor 2 and the lower conveyor 3 have horizontal portions 2A and 3A below, and the upper horizontal portion 2A of the upper conveyor 2 is open so that cutting fluid and cutting chips discharged from the machine tool can be introduced. Have been.

The upper conveyor 2 is provided between a pair of left and right driving sprockets 4 at an upper position and a pair of right and left driven sprockets 5 at a lower position and circulates in a vertical plane. 6. The first endless chain 6 is circulated by rotating the drive sprocket 4 with a geared motor 7 provided as a single drive source, with the upper traveling portion as the carrying side and the lower traveling portion as the return side. You.

A large number of aprons 6A are provided between the pair of first endless chains 6 for transporting cutting chips on the carrying side thereof. It has a structure. The bottom surface has a function as a conveying surface of the cutting chips, and also has a function of transmitting the cutting fluid downward and separating the chips from the cutting chips.

On the other hand, the lower conveyor 3 is bridged between a pair of left and right first sprockets 8 at an upper position and a pair of right and left driven sprockets 9 at a lower position, and circulates in a vertical plane. It has a second endless chain 10.

As shown in FIG. 2, on the rotating shaft 8A to which the first sprocket 8 is fixed, a second sprocket 8 having a diameter larger than that of the first sprocket 8 is provided inside the first sprocket 8 on both sides. Are fixed, and each of these second sprockets 11 meshes with the return side of the pair of first endless chains 6 at an upper position.

When the first endless chain 6 is driven to circulate by the geared motor 7, the second endless chain 10 moves through the lower traveling portion thereof via the first sprocket 8 and the second sprocket 11. It is circulated and driven with the carrying side and the upper traveling part as return sides. First endless chain 6
Is supported by the chain guide 12 from the opposite side of the meshing position with the second sprocket 11, and a reliable meshing state with the second sprocket 11 is maintained.

Between the pair of second endless chains 10,
Many scrapers 10A are attached at equal intervals in the transport direction. These scrapers 10 are configured to move in sliding contact with the bottom surface of a trough 13 provided along the carrying side of the second endless chain 10.

The upper conveyor 2 has a mountain-shaped downflow guide inclined downward from the center toward both left and right sides between the upper traveling portion and the lower traveling portion of the first endless chain 6 at the horizontal portion 2A position. The plate 14 is provided, and the cutting fluid that has passed through the apron 6 </ b> A on the carrying side and has fallen downward and the fine cuttings contained therein fall onto the flow-down guide plate 14. The left and right widths of the flow-down guide plate 14 are wider than the opposing widths of the pair of first endless chains 6, and the cutting fluid and fine cutting chips flow downward from the left and right ends of the flow-down guide plate 14.

On the other hand, the width of the trough 13 of the lower conveyor 3 is formed to be wider than the width of the flow-down guide plate 14. Caught by the bottom. Also,
The pair of second endless chains 10 are also arranged at intervals that pass outside the left and right ends of the flow-down guide plate 14.

The trough 13 in the horizontal portion 3A
Is provided with a cutting fluid outlet 15 for the cutting fluid stored therein.
Is open. Although not shown, a filtering filter is detachably attached to the cutting fluid outlet 15 and is connected to a tank storing the cutting fluid via a connecting pipe.

A horizontal portion 2B is formed at an upper end of the upper conveyor 2, and a lower surface of the horizontal portion 2B is opened to form a chip discharge port 16 for the chips conveyed upward by the apron 6A. Similarly, the trough 1 of the lower conveyor 3
At the upper end of 3, a cutting chip discharge port 17 for fine cutting chips penetrating the bottom surface of the apron 16 is formed.

Next, the operation of the separating apparatus 1 configured as described above will be described. A mixture of cutting chips and cutting fluid discharged from a machine tool (not shown) is supplied directly or via a chute or the like to the upper conveyor 2 of the separation device 1.
Of the first endless chain 6 and falls into the apron 6A on the carrying side of the first endless chain 6. At this time, the first
The endless chain 6 is circulated and driven by a geared motor 7, and the cutting chips dropped on the apron 6A are transported upward and discharged from the cutting chip discharge port 16. A collection box (not shown) or the like is placed below the chip discharge port 16, and the chip falling from the chip discharge port 16 is collected therein.

On the other hand, the cutting fluid that has fallen with the cutting chips into the apron 6A penetrates the bottom surface of the mesh structure of the apron 6A, flows down on the downflow guide plate 14, enters the trough 13 of the lower conveyor 3, and moves downward. It is temporarily stored in the trough at the position of the horizontal portion 3A of the conveyor 3, and is sucked from the cutting fluid outlet 15 by a pump (not shown) and returned to the tank. At this time,
Fine powder cuttings that could not be filtered off on the mesh on the bottom surface of the apron 6A also fall along with the cutting fluid and accumulate on the bottom surface of the trough 13.

The second endless chain 10 of the lower conveyor 3
Is circulated and driven by the first sprocket 8 and the second sprocket 11 in conjunction with the first endless chain 6 of the upper conveyor 2, so that fine cutting chips accumulated on the trough 13 are scraped by the scraper 10A. By trough 13
It is scraped upward along the bottom surface and is discharged from the chip discharge port 17 at the upper end of the trough 13. In the present embodiment, the second endless chain 10 interlocked with the first endless chain 6,
Since the diameter of the second sprocket 11 is larger than that of the first sprocket 8, its moving speed is lower than the moving speed of the first endless chain 6.

For this reason, the scraper 10A is
The fine chip is slowly scraped up from the bottom to the chip discharge port 17, during which the cutting fluid contained in the fine chip oozes out and flows downward along the slope of the trough 13 to remove the cutting liquid. It can be collected efficiently.

A collection box or the like is placed below the chip discharge port 17, and fine chips falling from the chip discharge port 17 are collected therein. The cutting chips discharged from the cutting chip discharge port 16 and the fine cutting chips discharged from the cutting chip discharge port 17 may be collected in the same collection box or the like, or may be separated and collected in separate collection boxes. May be. In addition, instead of a collecting box, a conveyor for collection may be provided below these chip discharge ports 16 and 17 to carry out the cutting chips.

In the above-described embodiment, an apron conveyor is used for the upper conveyor 2, but the upper conveyor is replaced by a scraper similar to the lower conveyor between a pair of left and right first endless chains instead of the apron 2A. The scraper on the carrying side is configured to move along the inner surface (transport surface) of the trough having a meshed side wall or bottom, so that the cutting fluid and fine cutting chips transmitted through the side wall or bottom are removed. However, as in the above-described embodiment, the lower conveyor may be dropped into the trough.

Further, when the upper conveyor and the lower conveyor are installed horizontally or at a gentle inclination, a pair of left and right endless chains are used on both sides of the upper conveyor as a wire mesh belt or the like which transmits the cutting fluid. The support structure may be used.

Although the drive source is a geared motor in this embodiment and is connected to the drive sprocket of the upper conveyor, other types of drive sources, such as a fluid motor, may be used. It is sufficient that the sprocket meshing with one of the endless chain and the second endless chain is driven by one drive source.

[0030]

As described above, in the apparatus for separating cutting fluid and cutting chips according to the present invention, both the upper conveyor and the lower conveyor are driven synchronously by a single drive source.
Unlike a conventional separation device in which each conveyor is driven by a separate drive source, an interlock circuit between the drive sources is not required, so that the configuration of the drive source control circuit can be simplified and the number of parts can be reduced. Can be reduced.

As a result, reliability and durability can be improved, maintenance can be facilitated, and manufacturing costs can be reduced. Further, when the diameter of the second sprocket is larger than that of the first sprocket, the conveying speed of the lower conveyor can be reduced without lowering the conveying speed of the upper conveyor, and the lower sprocket can be moved on the trough at a lower speed. By using the scraper, the cutting fluid contained therein is oozed out of the fine cutting waste, and the cutting fluid can be separated and recovered efficiently.

[Brief description of the drawings]

FIG. 1 is a side view showing a schematic structure of an embodiment of a separation device of the present invention.

FIG. 2 is a partially enlarged view of the separation device shown in FIG.

[Explanation of symbols]

 Reference Signs List 1 separation device 2 upper conveyor 2A, 2B horizontal part 3 lower conveyor 3A horizontal part 4 drive sprocket 5 driven sprocket 6 first endless chain 6A apron 7 geared motor (drive source) 8 first sprocket 8A rotating shaft 9 driven sprocket DESCRIPTION OF SYMBOLS 10 2nd endless chain 10A scraper 11 2nd sprocket 12 chain guide 13 trough 14 flow-down guide plate 15 cutting fluid outlet 16, 17 cutting waste outlet

Claims (2)

(57) [Claims] 1. An upper conveyor having a transport surface through which a cutting fluid can pass, and transporting cutting chips by a first endless chain circulating in a vertical plane; and the transport surface disposed below the upper conveyor. A trough for receiving the cutting fluid and the fine cutting chips falling through the scraper and a scraper for slidingly moving the trough bottom surface by the second endless chain circulating in a vertical plane to convey the fine cutting chips. The first endless chain carries the upper traveling part, the lower traveling part is the return side, and the second endless chain carries the lower traveling part, the upper traveling part A second sprocket rotating coaxially and integrally with a first sprocket that is the return side and that reverses the second endless chain from the carrying side to the return side from the carrying side is engaged with the return side of the first endless chain to form a first sprocket. The endless chain and the second endless chain are linked to each other, and a single drive source rotates a sprocket that meshes with one of the first endless chain and the second endless chain so that the upper conveyor and the lower conveyor are rotated. A separation device for cutting fluid and cutting chips, wherein the separation device is configured to be driven synchronously. 2. The apparatus according to claim 1, wherein the diameter of the second sprocket is larger than that of the first sprocket.