JPH07246539A - Chip removing device - Google Patents

Abstract

PURPOSE:To keep the filtrability of a filtrating drum excellent for a long time by providing the cylindrical filtrating drum in the inside of a side case in such a way as to be rotatable around a core axis parallel with the longer direction of the case. CONSTITUTION:Coolant including flowing chips flows in the inside of a side case 36, and it is filtrated by filter medium 41 so as to be moved in the inside of a filtrating drum 40. In this case, since the lower surface side of the filtrating drum 40 is rotated while being directed toward a housing section 17, chips having sank at the bottom section of the side case 36 are taken out by raking ribs provided for the outer circumference of the filtrating drum 40 so as to be delivered toward the bottom section of the housing section, and concurrently chips are prevented from being adhered onto filter medium by the action of centrifugal force. Here, the filtrating drum 40 is set in the inside of the side case 36 located at the side of the housing section 17. Coolant can thereby be filtrated in the inside of side case 36 where chips are not stirred, filtrability can thereby be stabilized for a long time, and an entrance to the housing section 17 can also be enlarged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip removing device for separating and removing chips from a coolant mixed with chips.

[0002]

2. Description of the Related Art As a conventional chip removing device, Japanese Unexamined Patent Publication No.
Japanese Patent No. 84407, namely, one shown in FIG. Figure 7
In the figure, 1 is a case, and a rectangular parallelepiped accommodating portion 2,
An upright portion 3 that rises obliquely upward from the left surface of the housing portion 2 to the left is integrally provided. The accommodating part 2 has a receiving port 2a into which chips and coolant 4 flow in, on the side surface in the width direction, and the upright part 3 has a discharging port 3a at its upper end.
Have.

A scraper conveyor 5 is provided in the case 1. The scraper conveyor 5 is provided with sprockets 6 and 7 at the lower right end portion of the accommodating portion 2 and the upper end portion of the standing portion 3, and the scraper conveyor 5 is attached to the sprockets 6 and 7.
The scraper conveyor 5 is wound so that the lower side of the scraper conveyor 5 moves along the bottom plate of the case 1 in the direction of the discharge port 3a. It is dropped toward the chip storage box 12.

Above the scraper conveyor 5 in the accommodating portion 2 is housed a hollow cylindrical filter drum 10 having a filter material wound around its peripheral surface, and the filter drum 10 is shown in FIG.
Turn right at. Then, the coolant 4a in the filtration drum filtered by the filtration drum 10 is caused to flow out to a return tank (not shown) provided on the side portion of the housing portion 2.

[0005]

In the above-mentioned conventional apparatus, since the filter drum 10 is arranged in the housing 2 into which the coolant containing the chips flows, the filter drum 10 is easily clogged. However, there is a drawback that the filtration function is deteriorated. That is, the chips are agitated in the accommodating portion 2 due to the inflow of the coolant and the circulation of the scraper conveyor 5, and the chips in the floating state adhere to the filter material of the filtration drum 10. Furthermore, if the filter drum 10 is present in the housing portion 2, the position and size of the coolant receiving port 2a containing chips are limited,
There was a drawback that the model used was limited. It is an object of the present invention to obtain a new chip removing device that solves the above drawbacks.

[0006]

The present invention is configured as follows to achieve the above object. That is, a case is integrally provided that has a storage part having a coolant inlet containing chips on the upper surface, an upright part that rises diagonally upward, and a discharge part having a discharge port on the bottom plate. In a chip removing device provided with a scraper conveyor which is wound between sprockets provided in a portion and is rotated so that a lower side thereof moves along a bottom plate of the case toward a discharging portion, one side portion of the accommodating portion. A side case is connected to the side case, and a cylindrical filtration drum is rotatably provided in the side case about an axis parallel to the longitudinal direction of the case. The bottom surface of the filtration drum faces the side case. A drive device for rotating in the direction is provided to open the side portion of the filtration drum to the outside of the side case.
In this case, a chain guide that guides the chain of the scraper conveyor along the accommodating portion, the upright portion, and the discharging portion is provided in the case, and the chain guide is made of a plate formed so that the end surface becomes the guide surface of the chain. It is preferable that the chain guide is spaced inward from the side plate of the case and is fixed to the side plate of the case by a pin-shaped connector. Further, it is preferable to provide a discharge device for spraying the clean coolant toward the filter material on the peripheral surface in the filter drum. Further, the bottom plate of the discharge section is inclined upward toward the transfer end direction, a discharge port is formed in the bottom plate located on the transfer end side of the scraper conveyor, and the coolant is applied to the transfer start end side bottom plate approaching the discharge port. It is advisable to provide a large number of small holes that pass through.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, FIG. 1 is a partial sectional side view of a chip removing device showing an embodiment of the present invention, and FIG. 2 is a partial sectional plan view thereof. 1 and 2, reference numeral 15 is a chip removing device, and 16 is a case thereof. This case 16
Is formed by a bottom plate 16a, a side plate 16b, and a top plate 16c made of sheet metal in the shape of an elongated rectangular tube in the left-right direction. Have one.

The accommodating portion 17 is extended horizontally, and its top plate is removed to form a large-area receiving opening 17a, and the right end is closed by a front plate 16d. Further, the upright portion 18 rises obliquely upward from the left end of the accommodating portion 17 to the left, the discharge portion 19 extends horizontally, and the bottom plate 16a-1 thereof is extended as shown in FIG. This bottom plate 16a-1
A chip discharge port 19a is formed at the left end of the
A large number of small holes 19b through which the coolant is dropped are formed in the bottom plate 16a-1 on the right side of 9a, and a water conduit 20 is attached to the lower part of the small holes 19b. The water conduit 20 is connected to the housing 17 or a reserve tank.

The right end portion in the accommodating portion 17 and the discharging portion 1
A pair of sprockets 23, 24 spaced apart in the width (widthwise) direction of the case 16 are attached to the middle portion in the left-right direction inside the 9, and a scraper conveyor 25 is wound around the sprockets 23, 24. The scraper conveyor 25 is a pair of chains 26
Are wound around the sprockets 23 and 24 facing each other, and a metal scraper 27 extending in the width direction of the case 16 is connected to the chain 26. The scraper conveyor 25 has a motor 28 attached to the outside of the discharge unit 19.
As a result, the lower side of the scraper conveyor 25 is case 16
It is rotated so as to move in the direction of the discharge portion 19 along the bottom plate 16a.

Reference numeral 30 denotes a chain guide formed of a sheet metal material, which is cut by a laser beam to bring a predetermined end surface into contact with the chain 26 of the scraper conveyor 25, and the chain 26 is accommodated in the accommodating portion 17, the standing portion 18, and the discharging portion 19. Guide along. As shown in FIG. 1, the chain guide 30 includes one long first chain guide 30a and two short first and second chain guides 30b and 30c.
The first chain guide 30a includes a front guide piece 30a-1 that contacts the upper and lower portions of the chain 26 at the left side of the sprocket 23 on the side of the accommodating portion 17, and the lower side of the chain 26 from the bottom of the accommodating portion 17. A bottom surface guide piece 30a-2 that guides along the bottom surface of the upright portion 18 and a rear guide piece 30a-3 that contacts the upward movement side of the chain 26 above the bent portion between the upright portion 18 and the discharge portion 19 are integrally formed. Have. Also,
The second chain guide 30b is in contact with the lower moving side of the chain 26 below the bent portion between the standing portion 18 and the discharge portion 19, and the third chain guide 30c is in the housing portion 17 and the standing portion 1.
The upper side of the bent portion with 8 contacts the upper side of the chain 26.

The chain guide 30 (first chain guide 30a to third chain guide 30c) is detachably fixed to the side plate 16b of the case 16 as follows. That is, as shown in FIG. 5, a screw hole is formed at a predetermined position of the chain guide 30, and a pipe spacer 31 cut to a predetermined length is erected and fixed (welded) to one side portion of the screw hole. Then, the tip of the spacer 31 is brought into contact with the inner surface of the side plate 16b of the case 16, and the bolt 32 (connector) inserted from the outer surface side of the side plate 16b is screwed into the screw hole. As a result, the chain guide 30 is separated inward from the side plate 16b of the case 16 and detachably fixed to the side plate 16b. Reference numeral 33 is a lid for working to open and close the upper surface of the discharging portion 19, and when the first chain guide 30a is replaced or repaired, the lid 33 is removed, and the first chain guide 30a is taken in and out from the upper surface of the discharging portion 19. .

A side case 36 is arranged on one side of the accommodating portion 17 (FIG. 2), and both of them are communicated with each other through a communication hole 35 formed in the lower part of the facing side plate (FIG. 1).
Then, the cylindrical filtration drum 4 is provided in the side case 36.
0 is rotatably supported about an axis (horizontal axis in the left-right direction) parallel to the longitudinal direction of the case 16, and the filter drum 4
0 is rotated by a motor (driving device) 50 in a direction in which the lower surface thereof faces the housing portion 17.

The filter drum 40 has a filter material 41 such as a wire mesh or a punching metal having a large number of small holes on its outer circumference.
And the large-diameter cylindrical shafts 42 and 43 are coaxially arranged on the left and right end plates 40a, and detachably tightened with bolts.
The cylindrical shafts 42 and 43 are protruded leftward and rightward from the side case 36 so that the inside of the filtration drum 40 is inside the side case 3.
6, the left and right end plates 36a of the side case 36 are opened to the outside.
The rollers 44 and 45, which are rotatably supported, are brought into contact with several positions on the outer circumferences of the cylindrical shafts 42 and 43 so as to be rotatably supported. In this case, as shown in FIGS. 3 and 4, the right roller 45 is a V roller, and by engaging this with a V groove 43a formed on the outer periphery of the right cylindrical shaft 43, the filtration drum 40 Regulates the axial movement of the. Reference numeral 40b denotes a scraping rib that projects outward in the radial direction from the outer periphery of the filter drum 40, and is formed by a fastener that connects the winding ends of the filter material 41.

A ring-shaped sprocket 46 is coaxially attached to the right end of the right cylindrical shaft 43, and is connected to the above-mentioned motor 50 via a chain 47. In FIGS. 3 and 4, reference numeral 48 is an oil seal attached to the outer circumference of the cylindrical shafts 42 and 43, and seals the fitting portion between the cylindrical shafts 42 and 43 and the side case 36. Reference numeral 51 denotes a discharge pipe that is inserted into the filtration drum 40, and a number of nozzles (not shown) that open toward the communication hole 35 are formed on the peripheral wall of the filtration drum 40 that faces the communication hole 35 from this nozzle. Filter material 41
The clean coolant is jetted toward. The right end of the discharge pipe 51 is a pump (not shown) for pumping clean coolant.
Connect to. Reference numeral 52 is a fitting for fixing the discharge pipe 51 to the side surface of the housing portion 17.

The housing 17 of the case 16 and the side case 36 are connected to the coolant return case 53 of the machine tool.
The coolant containing the chips of the machine tool is discharged toward the receiving port 17a of the storing unit 17, and the motors 28 and 50 are activated in this state. By the way, the accommodation part 17
The scraps that settled to the bottom inside the scraper conveyor 25
As a result, it is scraped up along the bottom surface of the case 16 and dropped from the discharge port 19a into the external chip storage box 54. At this time, the chips 55 that have arrived at the discharge section 19 are temporarily accumulated on the small holes 19b as shown in FIG.
After the coolant adhering to the chips 55 is separated by the section, it is sent out toward the discharge port 19a.

On the other hand, the coolant containing the chips discharged from the machine tool into the accommodating portion 17 flows into the side case 36 through the communication hole 35 in the side portion, is filtered by the filter medium 41, and is then filtered in the filter drum 40. Flow into the return case 53 from the cylindrical shafts 42, 42, and the return case 53
Is pumped out again to the machine tool. In this case, the lower surface side of the filtration drum 40 is the housing portion 1
Since it is rotated in the seven directions, the scraps that have settled on the bottom of the side case 36 are fed toward the bottom of the housing 17 by the scraping ribs 40b provided on the outer circumference of the filtration drum 40, and the centrifugal force acts. Prevents chips from adhering to the filter medium 41. Further, the clean coolant discharged from the discharge pipe 51 collides with the inner surface of the filter medium 41 facing the communication hole 35, and the chips that tend to adhere to the filter medium 41 are directed toward the communication hole 35 (toward the accommodating portion 17). It will be pushed out.

Since the filter drum 40 is provided in the side case 36 arranged on the side of the accommodating portion 40, the coolant can be filtered in the side case 36 in which the chips are not agitated. The performance is stable for a long period of time, the receiving port 17a of the accommodating portion 40 can be enlarged, and it becomes easy to connect the outlet port of the coolant containing the chips from the machine tool. Further, since the chain guide 30 is formed of a plate material and is separated from the side plate 16b of the case 16 so that the chain 26 is guided by the end face thereof, chips do not accumulate on the chain guide 30.
The wear of the chain guide 30 and the chain 26 is reduced, and the scraper 27 and the bottom plate 16a of the case 16 are reduced.
It is possible to accurately maintain the interval between and to prevent chips from being caught between them, and to prevent wear of these chips.

[0018]

As is apparent from the above description, the present invention can maintain the filtration performance of the filtration drum well over a long period of time, and prevent the scraper conveyor from being worn or damaged to improve the chip removal performance. The effect that it can be maintained satisfactorily throughout is exhibited. Further, the structure of the chain guide is simplified and the cost is reduced.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional side view of a chip removing device according to an embodiment of the present invention.

2 is a partial cross-sectional plan view of FIG.

FIG. 3 is a cross-sectional side view of a filtration drum unit.

FIG. 4 is a cross-sectional view of a main part of a filter drum support part.

FIG. 5 is a cross-sectional view of a main part of a chain guide support part.

FIG. 6 is a cross-sectional view of a main part of a discharge part.

FIG. 7 is a cross-sectional side view of a conventional chip removing device.

[Explanation of symbols]

 15 Chip removing device 16 Case 16a Bottom plate 16b Side plate 16c Top plate 16d Front plate 17 Storage part 17a Reception port 18 Standing part 19 Discharging part 19a Discharging port 19b Small hole 20 Water guide pipe 23 Sprocket 24 Sprocket 25 Scraper conveyor 26 28 Scraper 27 Scraper Motor 30 Chain guide 30a First chain guide 30a-1 Front guide piece 30a-2 Bottom guide piece 30a-3 Rear guide piece 30b Second chain guide 30c Third chain guide 31 Spacer 32 Bolt 33 Lid 35 Communication hole 36 Side Case 36a Left and right end plates 40 Filtration drum 40a Left and right end plates 40b Scraping rib 41 Filtration material 42 Cylindrical shaft 43 Cylindrical shaft 44 Roller 45 Roller 46 Sprocket 47 Chain 48 Oil seal 50 Motor 51 Discharge pipe 52 Mounting bracket 53 Coolant return case 54 Chip storage box 55 Chip

Claims (4)

[Claims] 1. An accommodating portion having an inlet for a coolant containing chips on an upper surface thereof, and an upright portion rising obliquely upward,
A bottom plate is provided with a case integrally having a discharge part having a discharge port. The case is wound between sprockets provided at both longitudinal ends of the case, and the lower side moves along the bottom plate of the case toward the discharge part. In a chip removing device provided with a recirculating scraper conveyor, a side case is communicatively connected to one side part of the accommodating part, and a cylindrical filtration drum is parallel to the longitudinal direction of the case in the side case. Is provided so as to be rotatable around a shaft core, and a drive device for rotating the filtration drum in a direction in which the lower surface thereof faces the side case is provided, and the side portion of the filtration drum is opened to the outside of the side case. A chip removing device. 2. A chain guide for guiding the chain of the scraper conveyor along the accommodating portion, the upright portion, and the discharging portion is provided in the case, and the chain guide is formed so that its end face becomes the guide surface of the chain. 2. The chip removing device according to claim 1, wherein the plate chain guide is spaced inward from the side plate of the case and is fixed to the side plate of the case by a pin-shaped connecting member. 3. The chip removing device according to claim 1 or 2, wherein a discharge device for discharging a clean coolant toward the filter material on the peripheral surface is provided in the filter drum. 4. The bottom plate of the discharge section is inclined upward toward the transfer end direction, a discharge port is formed in the bottom plate located closer to the transfer end side than the scraper conveyor, and the transfer start end side close to the discharge port. 4. The chip removing device according to claim 1, wherein the bottom plate is provided with a large number of small holes through which the coolant passes.