JP2009274178A - Cutting chips separation and discharging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting chips separation and discharging device which provides a longer life, an improved operability on use, a reduced workload for maintenance, and an improved availability factor. <P>SOLUTION: A filtration drum 150 has drain pipes at its both end portions, each of the end portions of the drain pipes is located in a pair of circular opening portions disposed on a side face of a conveyor frame 120, a roller bearing plate 180 having an outside diameter larger than the diameter of the circular opening portions and having a discharge port to discharge cleaning coolant to the outside of the conveyor frame is installed by being screwed in such a manner as to cover the circular opening portions, and a plurality of roller bearings 182 inscribing the drain pipe are installed by being screwed inside the roller bearing plate 180. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, when metal processing such as cutting and grinding by a machine tool is performed, a turbid coolant containing metal cutting waste such as iron or aluminum or cutting waste such as grinding waste discharged from the machine tool is applied to the conveyor frame. It is thrown into the turbid coolant storage tank provided in the lower horizontal part, and only the chips are caught by the hinge belt installed in the conveyor frame, and it is scooped up and carried out of the tank, and the hinge belt creates endless circulation. The present invention relates to a chip sorting and unloading device that collects purified coolant that has been filtered by a filtration drum that is rotatably in contact with a part of a track and discharged from a turbid coolant storage tank and reused by a machine tool.

  When machining, grinding, etc. on metal materials with machine tools, the lubricant is dissolved to suppress friction of the cutting jig, grinding jig, work material, etc., and to cool those members. Or a coolant such as lubricating oil is used. Then, the used turbid coolant containing the chips discharged from the machine tool is usually collected and collected only by the chip sorting and discharging device, and purified to a reusable level.

  FIG. 6 is a schematic side view showing a conventionally used chip sorting and discharging apparatus 500 with the front side frame 526 in a transparent state. The chip sorting and discharging apparatus 500 includes a turbid coolant storage tank 530 into which a turbid coolant D containing chips discharged from the machine tool M is charged, and an endless end installed in the conveyor frame 520 in a circulating state. Hinge belt 540. The conveyor frame 520 includes a conveyance-side inclined frame 521, a discharge portion frame 522, a return-side inclined frame 523, a horizontal floor surface frame 524, a metal frame continuous with the tail portion frame 525, and two side frames 526 that block both side surfaces thereof. It is configured.

  The chips K contained in the turbid coolant D put into the turbid coolant reservoir 530 are scooped up by the hinge belt 540 along the partition plate 560 to the outside of the turbid coolant reservoir 530 in the conveyor frame 520, and hinged. From the chip discharge port 528 located below the upper circumferential end 542 of the belt 540, the belt 540 is carried out to the chip collection box B or the like. A drive sprocket 570 for transmitting power to the hinge belt 540 is connected to a drive motor (not shown) at the upper circumferential end 542 of the hinge belt 540, while the hinge belt 540 is connected to the return side horizontal portion 543. A driven sprocket 572 is provided at the lower rotating end 544 that rotates in the direction of rotation from the conveying side horizontal portion 541.

  Further, at the base of the rising portion of the conveyor frame 520, there is a filtration drum 550 wound with a filtration filter made of a nonwoven fabric for filtering the turbid coolant D stored in the turbid coolant storage tank 530 and discharging it to the outside. Is provided. Then, the filtered coolant, that is, the purification coolant is discharged through a drain outlet 529 to a purification coolant storage tank 590 provided outside the conveyor frame 520, temporarily stored in the purification coolant storage tank 590, and then sucked up by a pump or the like. Reused in machine tools M and the like. An inspection window 527 for inspecting the properties of the filtration drum 550 is provided on the side frame 526 of the conveyor frame 520.

  On the other hand, the residual chips that do not pass through the filtration drum 550 are again scooped up by the hinge belt 540 and discharged from the chip discharge port 528. The filtration drum 550 is provided with a liquid purifying means (not shown) for purifying the filter so that the filtration filter gradually becomes clogged. The purifying coolant is sprayed from the liquid ejecting means and attached to the surface of the filtration filter. The powder K is blown away.

Here, the pivot structure of the filtration drum 550 will be described with reference to FIG. 7 which is a cross-sectional view taken along line VII-VII in FIG. The filtration drum 550 has a cylindrical shape in which a plurality of drum rods 551 are fixed to a pair of annular drum side plates 553 by welding or the like. A filtration filter 552 made of a nonwoven fabric or the like is wound around the outer peripheral surface, and both ends thereof are fastened and fixed by a hose band 554. Sprocket teeth 555 are fixed to the outside of the drum side plate 553 on one side, which meshes with the above-described hinge belt 540 running endlessly and rotating the filtration drum 550. An annular metal bearing 556 is fixed to the inside of the drum side plate 553 with a bolt. And this metal bearing 556 is slidably contacted with the outer peripheral surface of the drain pipe 580 fixed to the conveyor frame 520, so that the filtration drum 550 is rotatably supported. Further, in order to prevent the turbid coolant from entering the gap between the metal bearing 556 and the drain pipe 580 to wear the sliding contact surface, or to prevent the turbid coolant from leaking outside without passing through the filter 552, the cross section V A mold oil seal 582 is pressed against the side surface of the metal bearing 556 (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2005-230943 (FIG. 2)

  However, the conventional chip sorting and discharging apparatus 500 as described above cannot confirm the wear state of the oil seal 582 unless the filter drum 550 is taken out, and may continue to operate without noticing the wear. It was. Therefore, turbid coolant containing chips due to wear of the oil seal 582 enters between the metal bearing 556 and the drain pipe 580 to corrode or wear the sliding contact surface. It was.

Further, as described above, the filtration drum 550 has annular drum side plates 553 at both ends, and a metal bearing 556 is attached to the inside thereof, and the outer periphery of the drain pipe 580 fixed to the conveyor frame 520. Since the liquid level of the turbid coolant is lowered most, that is, even when the apparatus is stopped, the liquid level of the turbid coolant is lowered only to the position indicated by the horizontal line L in FIG. The conveyance side horizontal portion 541 of the belt 540 is immersed in the turbid coolant, and it is not known whether the apparatus is operating or stopped, and there is a problem that the operability in use is poor.
Further, for the same reason, a part of the metal bearing 556 that is a bearing member is always immersed in the turbid coolant, so that the deterioration of the metal bearing 556 is promoted and the life of the apparatus is reduced.

  Furthermore, when replacing the metal bearing 556 and the oil seal 582, it is necessary to remove the filtration drum 550 from the conveyor frame 520, which places a heavy burden on maintenance work, leading to a reduction in the operating rate of the apparatus.

  Therefore, the technical problem to be solved by the present invention, that is, the object of the present invention is to extend the life of the apparatus, improve the operability in use, reduce the burden of maintenance work, and reduce the operating rate of the apparatus. It is to provide a chip sorting and discharging device that achieves improvement.

  First, the invention according to claim 1 is a turbid coolant storage tank provided in a lower horizontal portion of a conveyor frame into which turbid coolant containing chips discharged from a machine tool is charged, and the turbid coolant is filtered. A cylindrical filtration drum that serves as a purification coolant, and a hinge belt that circulates in the conveyor frame and scoops up the chips and discharges the chips to the outside from a chip discharge port provided at the head of the conveyor frame. In the chip sorting and discharging apparatus, the filtration drum has drain pipes at both ends, and each end of the drain pipe is located in a pair of circular openings provided on the side surface of the conveyor frame, and the circular openings A roller bearing plate having an outer diameter larger than the diameter of the section and having a coolant discharge port for discharging the purification coolant to the outside of the conveyor frame. Is screwed so as to cover the mouth portion, a plurality of roller bearings inscribed in the drain pipe to the inside of the roller bearing plate by being screwed, is obtained by solving the above problems.

Further, the invention according to claim 2 is the chip sorting and discharging apparatus according to claim 1, wherein the roller bearing is disposed above the normal liquid level of the purification coolant, thereby further providing the above problem. It has been solved.
Here, “the normal liquid level height of the purifying coolant” in the present invention means the position where the fluctuation of the liquid level of the purifying coolant when the apparatus is operating normally is the highest.

  The “chip” in the present invention is discharged from a machine tool such as grinding scrap discharged from a grinding machine device as well as metal cutting scraps such as iron and aluminum discharged from a cutting device or the like. It is a general term for metal scrap.

  According to the first aspect of the present invention, the turbid coolant storage tank provided in the lower horizontal portion of the conveyor frame into which the turbid coolant containing the chips discharged from the machine tool is charged, and the turbid coolant are filtered. Chip separation having a cylindrical filtration drum as a purification coolant and a hinge belt that circulates in the conveyor frame and scoops up the chips and discharges them to the outside from the chip discharge port provided at the head of the conveyor frame In the discharge device, the filtration drum has drain pipes at both ends, and each end of the drain pipe is located in a pair of circular openings provided on the side surface of the conveyor frame, and has an outer diameter larger than the diameter of the circular opening. A roller bearing plate having a diameter and having a coolant discharge port for discharging the cleaning coolant to the outside of the conveyor frame is screwed so as to cover the circular opening. A plurality of roller bearings inscribed in the drain pipe are screwed inside the bearing plate, so that the roller bearing is located on the purification coolant side and does not come into contact with the turbid coolant, and the filtration drum is taken out from the apparatus. Since the roller bearing can be removed without deterioration, the deterioration and wear of the roller bearing can be suppressed, the life of the apparatus can be extended, the maintenance work load can be reduced, and the operating rate of the apparatus can be improved.

  In addition, since the diameter of the drain port provided in the conveyor frame and the diameter of the filtration drum can be made substantially equal, the liquid level of the turbid coolant when the apparatus is stopped can be lowered than the horizontal part on the conveying side of the hinge belt. In addition, since the operation state of the apparatus can be visually checked, the operability in use is improved.

  Furthermore, since the filtration drum is rotatably supported by a plurality of roller bearings, a metal bearing over the entire circumference of the filtration drum, which has been conventionally used, is unnecessary, so that the cost of the apparatus can be reduced.

  According to the second aspect of the present invention, in the chip sorting and discharging apparatus according to the first aspect, the roller bearing is disposed above the normal liquid level height of the purification coolant. Is prevented from being exposed to the state of being immersed in the purification coolant for a long time, so that the life of the roller bearing can be extended.

  The chip separation and discharge device of the present invention is a turbid coolant storage tank provided in a lower horizontal portion of a conveyor frame into which turbid coolant containing chips discharged from a machine tool is charged, and filters the turbid coolant. A filtration drum having a cylindrical filtration drum as a purification coolant, and a hinge belt that circulates in the conveyor frame and scoops up the chips and discharges them to the outside from a chip discharge port provided at the head of the conveyor frame. Has drain pipes at both ends, and each end of the drain pipe is located in a pair of circular openings provided on the side surface of the conveyor frame and has an outer diameter larger than the diameter of the circular openings and a purification coolant. A roller bearing plate having a coolant discharge port for discharging the air to the outside of the conveyor frame is screwed so as to cover the circular opening, and the drain pipe is provided inside the roller bearing plate. Since multiple roller bearings are screwed, the deterioration and wear of the roller bearings are suppressed, the life of the equipment is extended, the maintenance work load is reduced, and the operating rate of the equipment is improved. As long as the cost can be reduced, any specific embodiment may be used.

  For example, in the present invention, a hinge belt is adopted as an endless conveyor provided in a circulating state in the conveyor frame, but a scraper conveyor can be used as long as it can efficiently scoop chips from turbid coolant. There is no problem even with other types of conveyors.

Hereinafter, a chip sorting and discharging apparatus 100 according to an embodiment of the present invention will be described with reference to the drawings.
Here, FIG. 1 is a schematic side view showing the conveyor frame 120 of the chip sorting and discharging apparatus 100 according to the embodiment of the present invention in a transparent state, and FIG. 2 is a view taken along the line II-II in FIG. FIG. 3 is a cross-sectional view showing the cross-section of FIG. 3 with the hinge belt 140 omitted, FIG. 3 is an enlarged view of the III part of FIG. 2, and FIG. 4 is an exploded view of the IV part of FIG. FIG. 5 is a perspective view of the filtration drum 150 mounted on the chip sorting / discharging device 100.

  As shown in FIG. 1, the chip sorting and discharging apparatus 100 according to the present embodiment includes a turbid coolant storage tank 130 into which a turbid coolant D containing chips discharged from the machine tool M is charged, and a conveyor frame 120. And a hinge belt 140 provided in an endless circulation state. The conveyor frame 120 includes a conveyance-side inclined frame 121, a discharge unit frame 122, a return-side vertical frame 123, a horizontal floor frame 124, a metal frame continuous with the tail frame 125, and two side frames 126 that block both side surfaces thereof. It is configured.

  Chips contained in the turbid coolant D charged into the turbid coolant reservoir 130 are scooped up outside the turbid coolant reservoir 130 along the partition plate (not shown) by the hinge belt 140, and the hinge belt. 140 is discharged from a chip discharge port 128 located below the upper peripheral end 142 of the chip into a chip collection box (not shown). A driving sprocket 170 that transmits power to the hinge belt 140 is connected to a driving motor (not shown) at the upper circumferential end 142 of the hinge belt 140, while the hinge belt 140 is connected to the return side horizontal portion 143. A driven sprocket 172 is provided at the lower rotating end portion 144 that rotates in the direction from the conveying side horizontal portion 141 to the conveying side horizontal portion 141.

  Further, a cylindrical filter drum around which a filter made of a nonwoven fabric or the like is wound around the root of the rising portion of the conveyor frame 120 to filter out the turbid coolant stored in the turbid coolant storage tank 130 and discharge it to the outside. 150 (see FIG. 5) is provided. Then, the filtered coolant, that is, the purification coolant is discharged to the purification coolant storage tank 190 provided outside the conveyor frame 120 through the drain port 129, and once stored in the purification coolant storage tank 190, it is sucked up by a pump or the like. And reused in the machine tool M or the like. The side frame 126 of the conveyor frame 120 is provided with an inspection window 127 for inspecting the properties of the filtration drum 150.

  On the other hand, residual chips that do not pass through the filtration drum 150 are scooped up again by the hinge belt 140 and discharged from the chip discharge port 128. Such a filtration drum 150 is provided with a liquid jetting means (not shown) for purifying the filter because the filter gradually becomes clogged, and a cleaning coolant is jetted from the liquid jetting means to adhere to the surface of the filter. The blown chips are blown away.

  Next, the structure of the filtration drum 150 and the attachment structure to the conveyor frame 120, which are the main parts of the present invention, will be described with reference to FIGS. As shown in FIG. 5, the cylindrical filter drum 150 has drain pipes 156 at both ends of the opening, and a plurality of drum rods 151 are fixed between the drain pipes 156. And the filtration filter 152 which consists of a nonwoven fabric etc. is wound by the outer peripheral surface, and it is fastened and fixed to the drain pipe 156 by the large diameter hose band 154 (refer FIG. 2). Furthermore, sprocket teeth 155 for rotating the filtration drum 150 in contact with a part of the endless circulation track of the hinge belt 140 are provided on one drain pipe 156 so as to project.

  The filter drum 150 is positioned in a pair of circular openings provided on the side frame 126 of the conveyor frame 120 at each end of the drain pipe 156. A roller bearing plate 180 having an outer diameter larger than the diameter of the circular opening and having a coolant discharge port 180a (see FIG. 4) for discharging the purification coolant to the outside of the conveyor frame 120 is interposed via the spacer 181. It is screwed so as to cover the circular opening. In order to firmly screw the roller bearing plate 180 to the side frame 126 of the conveyor frame 120, a semi-annular frame reinforcing plate 189 having an inner diameter substantially equal to the diameter of the circular opening is disposed inside the side frame 126. ing. A plurality of roller bearings 182 inscribed in the drain pipe 154 are screwed by bolts 186 and nuts 185 through the spacers 183 inside the roller bearing plate 180. Further, two washers 184 are interposed between the nut 185 and the roller bearing 182 in order to improve the rotation of the roller bearing 182.

  In this embodiment, four roller bearings 182 are provided as shown in FIG. These roller bearings 182 are disposed above the normal liquid level of the purification coolant so that the roller bearings 182 are not immersed in the purification coolant for a long period of time. As a result, corrosion of the roller bearing 182 is prevented, and workability when the roller bearing 182 is replaced is improved. The number of roller bearings 182 is not limited to four, and can be three as long as the filtration drum 150 can be stably supported and can be disposed above the normal liquid level of the purification coolant. It may be 5 or more.

  Further, as shown in FIG. 3, in order to prevent the turbid coolant from leaking between the drain pipe 156 and the roller bearing plate 180, a resin ground packing 188 is provided over the end of the drain pipe 156. Yes. In order to prevent the ground packing 188 from being worn by the chips, chip intrusion preventing members 157 and 158 are provided.

  An outer cover 187 that regulates the shape of the coolant drain port 180a is fixed to the outside of the roller bearing plate 180 with bolts. The outer cover 187 has a shape that does not interfere with the bolt 186 for fixing the roller bearing 182 (see FIG. 4).

  As described above, the chip sorting and discharging apparatus 100 according to the embodiment of the present invention has a structure in which the roller bearing 182 is located on the purification coolant side and does not contact the turbid coolant, and only by removing the outer cover 187, Since the roller bearing 182 can be removed without removing the filtration drum 150 from the apparatus, deterioration and wear of the roller bearing 182 can be suppressed, and the life of the apparatus can be extended, while the burden of maintenance work can be reduced, and the operating rate of the apparatus can be reduced. Improvement can be realized.

  Further, since the diameter of the drainage port 129 and the diameter of the filtration drum 150 can be made substantially equal, the liquid level of the turbid coolant when the apparatus is stopped can be made lower than the conveyance side horizontal part 141 of the hinge belt 140, and the apparatus Since the operation state of can be visually checked, the operability in use is improved.

  Furthermore, since the filtration drum 150 is rotatably supported by the plurality of roller bearings 182, the metal bearings around the entire circumference of the filtration drum that have been conventionally used are not required, and thus the cost of the apparatus can be reduced.

  In addition, since the roller bearing 182 is disposed above the normal liquid level of the purification coolant, the roller bearing 182 is prevented from being exposed to a state immersed in the purification coolant for a long time. Therefore, the life of the roller bearing 182 can be extended.

The schematic side view of the chip separation discharge apparatus of a present Example. Sectional drawing in the arrow II-II line | wire of FIG. The enlarged view of the III section of FIG. FIG. 4 is an exploded three-dimensional view of part IV in FIG. 2. The perspective view of the filtration drum of the chip separation discharge apparatus of a present Example. The schematic side view of the conventional chip classification discharge apparatus. Sectional drawing in the arrow VII-VII line of FIG.

Explanation of symbols

100, 500 ... Chip sorting discharge device 120, 520 ... Conveyor frame 121, 521 ... Conveyance side inclined frame 122 (of conveyor frame), 522 ... Discharge unit frame 123 (of conveyor frame) .. Return-side vertical frames 124, 524 (conveyor frame) horizontal floor frames 125, 525 ... (conveyor frame) tail frames 126, 526 ... (conveyor frame) ) Side frames 127, 527 ... Inspection windows 128, 528 (conveyor frame) Chip discharge ports 129, 529, drain ports 130, 530 (conveyor frame) Cloudy coolant reservoirs 140, 540... Hinge belts 141, 541. Transport side horizontal portions 142, 542 (of the hinge belt) Upper circular end portions 143, 543 (of the hinge belt) Return side horizontal portions 144, 544 (of the hinge belt) (of the hinge belt) Lower circulation end 150, 550... Filtration drum 151, 551... Drum rods 152, 552 (of filtration drum) Filtration filters 154, 554... (Of filtration drum) hose Bands 155, 555 ... Sprocket teeth 156 (of the filtration drum) Drain pipes 157, 158 ... (of the filtration drum) Chip intrusion prevention members 170, 570 ... Drive sprocket 172 , 572 ... Follower sprocket 180 ... Roller bearing plate
180a ... coolant outlet 182 ... roller bearing 183 ... spacer 184 ... washer 185 ... nut 186 ... bolt 187 ... outer cover 188 ... ground Packing 189 ... Frame reinforcement plates 190, 590 ... Purification coolant reservoir 523 ... Return side inclined frame 553 (of conveyor frame) ... Drum side plate 556 (of filtration drum) ... Metal bearing 560 ··· Partition plate 580 ··· Drain pipe 582 ··· Oil seal B ··· Chip collection box K ··· Chip L · · · Horizontal line M (of the turbid coolant level when the device is stopped) Machine Tools

Claims (2)

A turbid coolant storage tank provided at a lower horizontal portion of a conveyor frame into which turbid coolant containing chips discharged from a machine tool is charged, and a cylindrical filter drum that purifies the turbid coolant into a purification coolant And a chip separation and discharge device having a hinge belt that circulates in the conveyor frame and scoops up the chips and discharges the chips to the outside from a chip discharge port provided at the head of the conveyor frame.
The filtration drum has drain pipes at both ends, and each end of the drain pipe is located in a pair of circular openings provided on the side surface of the conveyor frame, and has an outer diameter larger than the diameter of the circular opening. A roller bearing plate having a diameter and having a coolant discharge port for discharging the cleaning coolant to the outside of the conveyor frame is screwed so as to cover the circular opening, and a plurality of inscribed inside the drain pipe inside the roller bearing plate A chip sorting and discharging device, wherein the roller bearing is screwed.   The chip sorting and discharging device according to claim 1, wherein the roller bearing is disposed above a normal liquid level of the purification coolant.

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