JP2002113634A - Chips carry-out conveyor device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To treat the turbid coolant including the long chips, short chips and narrow chips discharged from a machine tool with one device, and to reduce a space to be occupied by a conveyor device, and to prevent the generation of damage of a filtration filter. SOLUTION: An endless hinge belt 3 provided with a cleat 37 in a peripheral surface thereof is provided in a treatment vessel 2, and a large chips carrying mechanism 5 for discharging the large chips caught on a peripheral surface of an upper traveling belt 3A outside of the treatment vessel is provided at a folding part of the hinge belt wound around a sprocket 41 provided over one end of the treatment vessel. A small chips carrying mechanism 6 for discharging the small chips carried by a lower traveling belt is provided inside of the holding part of the hinge belt wound around a sprocket provided over the other end of the treatment vessel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting metal chips such as irons and aluminums, and cutting chips such as grinding chips discharged from a machine tool when performing metal processing such as cutting and grinding with the machine tool. Filtration processing of the contained turbid coolant, large and small chips are conveyed by a hinge belt, large and small chips are separately discharged out of the treatment tank, and these cleaning chips are removed. The present invention relates to a chip discharge conveyor device configured to collect swarf.

[0002]

2. Description of the Related Art When machining a metal material with a machine tool, such as cutting and grinding, a coolant such as water in which a cutting oil or a lubricant is dissolved is used to cool a cutting tool, a grinding tool, and a material to be processed. Used. Conventionally, when a turbid coolant containing cutting chips discharged from a machine tool is processed by a filtration device, the turbid coolant is put into a processing device and filtered, and a filtered tank is reused in a predetermined tank for reuse. At the same time, the chips remaining after the filtration are conveyed and discharged by a conveyor. As a device for performing such processing, a scraper type device (actually fair 2
JP-A-33850) and a hinge belt type (JP-A-9-300171) are known.

The former scraper type processing apparatus is
A plurality of scrapers (scrapers) are wound at regular intervals in the transport direction between a pair of endless conveyor chains to form a scraper conveyor, and the scraper conveyor is driven to circulate in the processing tank and reciprocates. A rotary filter rotated by a ratchet is provided between the upper and lower portions of the conveyor. The turbid coolant discharged from the machine tool is put into the processing tank, and small chips contained in the turbid coolant settle to the bottom of the processing tank through the space between the scrapers, are scraped off by the scraper, and are removed from the processing tank. Is discharged. On the other hand, the supplied turbid coolant is filtered by a rotary filter, discharged from the inside of the rotary filter to the outside through a discharge port provided in the processing tank as a purification coolant, and then discharged to a predetermined tank for reuse. Is returned to.

In the latter processing apparatus of the hinge belt type, a turbid coolant is charged into a processing tank provided with a hinge belt provided with a scraper, and large-sized chips such as curled chips and dango-shaped chips in which the chips are solidified. The powder is captured by the hinge belt, and the hinge belt is moved along the bottom of the tank in a state where the powder is captured, scraped by a scraper to roughly remove large chips, transported and discharged, while the large chips are removed by the hinge belt. The roughened primary purified liquid is supplied to a drum filter type filtration device provided side by side to remove remaining fine chips (sludge) and to filter.

[0005]

The former scraper type processing apparatus can process turbid coolant containing short chips (100 mm or less) and transport the short chips. However, if long chips (100 mm or more) are included, the long chips are entangled with the scraper that conveys the chips, the main shaft for driving the conveyor, the slave shaft, the filter, etc., and the conveyor is stopped or the filter is damaged. For example, there is a problem that turbid coolant containing long chips cannot be processed.

[0006] The latter processing apparatus of the hinge belt type,
As described in the prior art (Japanese Patent Application Laid-Open No. 9-300171), a hinge belt having a scraper is provided in a processing tank, so that long chips, curled chips, and dango-shaped chips obtained by solidifying these chips are used. The chips are captured on the hinge belt and can be processed, transported and discharged without any problem. However, if the turbid coolant contains short chips, the short chips enter the return belt from the chip conveyor belt on the hinge belt, accumulate on the return belt, enlarge, and stop the conveyor. There was a problem to make it.

[0007] That is, short chips are returned from the transport side belt (upper running belt) to the return belt (lower running belt) from the through holes of the hinge plate, the joints of the hinge plates, the gap between the conveyor chain and the guide rail, and the like. ), And settles to the bottom of the tank. However, short chips settled on the inner peripheral surface side of the lower traveling belt often cannot settle to the bottom of the tank and adhere to the inner peripheral surface of the belt. Then, the through holes of the hinge plate are clogged and the like, and the hinge belt is circulating and running endlessly, so that the short chips are repeatedly brought back and circulated. For this reason, there is a problem that fine chips and short chips gradually accumulate and enlarge, stopping the conveyor, and a problem that turbid coolant containing long chips and short chips cannot be processed. There was a point. As described above, in the processing apparatus of the hinge belt type, the processing cannot be performed if fine chips are contained. Therefore, in the above-described conventional technology, a separate filter apparatus is provided adjacent to the drum filter type. There was a problem that much space was required.

Further, in order to treat turbid coolant in which long chips and short chips are mixed, a hinge belt conveyor is juxtaposed or vertically stacked on a scraper type conveyor, and primary processing is performed by a hinge type conveyor ( Rough cutting of chips is also performed. However, in both cases of juxtaposition and vertical stacking, there is a problem that a large occupied space is required and two driving sources are required. Was. In addition, in the case of stacking vertically, there are problems such as poor maintainability of the lower conveyor.

Accordingly, the present invention solves the above-mentioned problems of the prior art, and provides a single apparatus for turbid coolant containing long chips, short chips, fine chips, and the like discharged from a machine tool. The present invention provides a chip carrying conveyor device which can carry out a purifying process at the same time, can convey and discharge these chips, can further reduce the space occupied by the conveyor device, and can prevent damage to the filtration filter. The purpose is to:

[0010]

In order to achieve the above object, according to the present invention, a processing tank provided with an endless hinge belt having a cleat on its outer peripheral surface is provided with a large and small chip. The turbidity coolant containing is supplied, the large chip and the small chip are transported by the hinge belt, and the chip discharge conveyor device configured to discharge these chips outside the processing tank. The bottom of the tank is formed of a horizontal plate formed over the central portion in the longitudinal direction of the processing tank, and an upwardly inclined plate extending on both side ends of the horizontal plate. Wound around each sprocket provided above both ends in the longitudinal direction, substantially parallel to the tank bottom, and provided so that the lower traveling belt runs along the tank bottom, the processing tank, Sprocket installed above one end of the processing tank A large chip discharge mechanism configured to drop and discharge large chips caught on the outer peripheral surface of the upper traveling belt to the outside of the processing tank by the folded portion of the hinge belt wound around the processing tank is provided. On the inside of the folded portion of the hinge belt wound around the sprocket provided at the other end, the small chips carried on the inner peripheral surface of the lower running belt are discharged to the outside of the processing tank. A small chip discharging mechanism provided with a small chip discharging mechanism.

According to a second aspect of the present invention, a turbid coolant containing large and small chips is charged into a treatment tank provided with an endless hinge belt having cleats on the outer peripheral surface, and large chips and small chips are added. In the chip discharge conveyor device in which the chips are conveyed by the hinge belt and these chips are discharged out of the processing tank, the processing tank has a tank bottom from the center in the longitudinal direction of the processing tank to the terminal. A horizontal plate formed over the
The endless hinge belt is formed of an upwardly inclined plate extending to one end of the horizontal plate, and the endless hinge belt is provided in a sprocket provided above one end in the longitudinal direction of the processing tank and in the other end tank in the longitudinal direction. The lower traveling belt is provided so as to run along the bottom of the tank substantially parallel to the bottom of the tank, and the processing tank is provided above one end of the processing tank. In the vicinity of the folded portion of the hinge belt wound around the sprocket, a lower traveling belt running along the bottom of the tank and the tip of the inclined plate are provided. A large and small swarf unloading mechanism is provided so as to be dropped and discharged to the outside of the inside of the folded portion of the hinge belt wound around the sprocket provided above the one end, on the inner peripheral surface of the lower traveling belt. Small that has been transported There chip discharge conveyor system for small chip discharge mechanism so as to discharge is provided a chip in the processing tank outward, it is obtained by a configuration in.

According to a third aspect of the present invention, there is provided the chip discharging conveyor device according to the first or second aspect, wherein a cleat is provided on an inner peripheral surface of the hinge belt.

In the present invention, the longitudinal direction of the processing tank means a direction in which an endless hinge belt circulating and running is stretched, and the large chips are long chips, curled chips, Chips of a size large enough to be caught by the upper traveling belt, such as agglomerated chips, are referred to as small chips, the gap between the joints of the hinge belt, the gap between both ends of the hinge belt and the side wall of the processing tank. It means chips having a size such that they settle through gaps, conveyor chain gaps, and the like.

[0014]

According to the first aspect of the present invention, when a turbid coolant containing large chips and small chips is put into a processing tank, the chip discharging conveyor device having the above-mentioned structure is arranged on the upper traveling belt of the hinge belt. The trapped large chips are conveyed obliquely above the processing tank by the hinge belt, and are discharged and discharged by the large chip discharge mechanism so that they naturally fall out of the processing tank near the turning portion of the hinge belt. You. On the other hand, the small chips caught by the lower traveling belt are carried out by a small chip carrying mechanism provided inside the vicinity of the folded portion of the hinge belt and discharged to the outside of the processing tank. In addition, the small chips which are not caught by the lower traveling belt and further settle to the bottom of the tank are conveyed by the cleats of the lower traveling belt in the direction of the small chip discharging mechanism along the bottom of the tank, and rotate around the folded portion. Then, the paper is conveyed again by the upper traveling belt of the circulating traveling hinge belt, and while repeating this, is finally discharged by a small chip discharging mechanism.

Further, a chip discharge conveyor device (Claim 2)
When turbid coolant containing large chips and small chips is put into the processing tank, the large chips are conveyed to the end of the processing tank while being captured on the outer peripheral surface of the upper traveling belt. By a sprocket, and by the cleats on the outer peripheral surface of the hinge belt, it is conveyed along with the small chips settling on the bottom of the processing tank to the tip of the inclined plate at one end of the processing tank along the bottom of the processing tank. In the vicinity of the folded portion of the hinge belt wound around the sprocket provided in the above, the large and small swarf carrying-out mechanism is dropped and discharged from the inclined plate to the outside of the processing tank. On the other hand, the small chips caught by the lower traveling belt are discharged to the outside of the processing tank by a small chip discharging mechanism provided inside the vicinity of the folded portion of the hinge belt.

In each of the present inventions described above, when the cleat is also provided on the inner peripheral surface of the hinge belt (claim 3), small chips are easily captured.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described in Example 1.
This will be described with reference to FIGS. As shown in FIGS. 1 and 2, the chip discharge conveyor device 1 includes a processing tank 2.
An endless hinge belt 3 provided on the hinge belt, a sprocket 41 around which a conveyor chain of the hinge belt is wound,
42, a large chip discharging mechanism 5, a small chip discharging mechanism 6, and a drum filter 7 installed between the upper and lower running belts 3A and 3B of the hinge belt 3 horizontally running in the processing tank 2. The large chips are conveyed by the upper traveling belt 3A.

The processing tank 2 has a tank bottom 21 formed of a horizontal plate 21A formed over the center in the longitudinal direction of the processing tank, and upward inclined plates 21B and 21C extending on both side ends of the horizontal plate. Sprockets 41 and 42 around which the hinge belt 3 is wound are provided above both ends in the longitudinal direction of the processing tank 2. The inclined plate 21C is formed in a semi-cylindrical shape on the sprocket 42 side. Incidentally, 26 in FIG.
Is an inlet for introducing the turbid coolant into the processing tank 2 from the side.

As shown in FIG. 3, the hinge belt 3 is formed by hingedly connecting hinge plates 31 by means of belt pins 33 between conveyor chains 32 comprising a pair of roller chains. The conveyor chain 32
It comprises a link plate 34 and a roller 35, which is fitted on a belt pin 33. The hinge plate 31 used here is a plain plate without through holes, projections, and the like. In addition, 31A in the figure is a hinge pipe integrally formed with the hinge plate 31.

At both ends of each hinge plate 31,
The side wing 36 is fixed, and the side wing 3
4 includes a wing plate 36A and a mounting plate 36B, which are fixed to the hinge plate 31 via the mounting plate 36B, as shown in FIG. In the wing plate 36A, the wing plates 36A of the adjacent hinge plates 31 overlap each other, so that there is no gap even if the hinge belt 3 runs up and down.

On the outer peripheral surface side of the hinge belt 3, cleats 37 fixed to every third hinge plate 31 are provided. The cleats 37 are used to scrape and transport the chips settled on the tank bottom 21 of the processing tank 2 when the lower running belt 3B of the hinge belt 3 runs. A cleat 38 is also provided on the inner peripheral surface side of the hinge belt 3 as needed to assist in capturing small chips (see FIG. 7).

The hinge belt 3 is wound around sprockets 41 and 42 provided above both ends in the longitudinal direction of the processing tank 2 and substantially corresponds to the tank bottom 21 composed of the horizontal plate 21A, the inclined plate 21B and the inclined plate 21C. Parallel and lower running belt 3
B is provided so as to travel along the processing tank bottom 21. The hinge belt 3 is provided on a guide rail 27 (FIG. 7) provided on a tank wall of the processing tank 2, a conveyor frame, or the like.
Along the rollers 35 of the conveyor chain 32. The guide rail 27 may be provided at least at a position where the hinge belt 3 bends and travels.

The large chip discharging mechanism 5 is configured in the vicinity of a folded portion of the hinge belt 3 wound around a sprocket 41 provided above one end of the processing tank 2, and is configured to circulate the hinge belt 3. Upper traveling belt 3A
The large swarf held and conveyed by the cleat 37 on the outer peripheral surface of the processing tank 2 is carried out so as to be dropped into the large swarf collection box 51 installed outside the processing tank 2 from the upper part of the folded portion. The coolant is drained from the large swarf while the hinge belt 3 that has traveled horizontally in the processing tank 2 moves obliquely upward from below the liquid level to above the liquid level.

As shown in FIGS. 5 and 6, the small chip discharge mechanism 6 is provided inside the vicinity of the folded portion of the hinge belt 3 wound around the sprocket 42 provided above the other end of the processing tank 2. A provided chip receiving plate 61, a nozzle 62 for cleaning the inner peripheral surface of the hinge belt, and a receiving plate 61.
And a screw conveyor 63 for discharging the small chips falling to the outside of the processing tank 2. The small swarf is caught by the inner peripheral surface of the lower traveling belt 3B of the hinge belt 3 traveling in the processing tank 2, and the hinge which travels back and forth by the natural fall or the cleaning liquid of the injection nozzle 62 near the return portion. It falls from the inner peripheral surface of the belt 3 to the receiving plate 61, is conveyed by the screw conveyor 63, and is discharged through the discharge path 64 to the small chip collecting box 65.

FIG. 7 shows the internal structure of the drum filter 7 installed between the upper traveling belt 3A and the lower traveling belt 3B of the circulating hinge belt 3. The drum filter 7 includes drum sprockets 72 and 72 having spokes 71, drum sprockets 72,
A large number of cross members 73 spanned between
And a filter member 74 made of a porous material and / or a filter medium supported by the filter member 74, as shown in FIG.
Approximately the upper half is exposed above the liquid surface.

The drum filter 7 is provided on the side wall 22 of the processing tank 2.
The shaft 23 is rotatably supported via bearings 24 on bearings 23, 23. A cleaning liquid (coolant) pressure feed pipe 8 of a filter member 74 is fitted into one of the support shafts 23, and the pressure feed pipe 8 A nozzle 81 for injecting the cleaning liquid to the filter member 74 is provided at the tip of the filter member 74. Also, the side wall 2 of the processing tank 2
The outlet 2 is provided with an outlet 25 through which the cleaning coolant flows out between the spokes 71 at a position facing the lower part of the drum filter 7. Note that 75 in FIG.
Is an annular rubber seal member for preventing the coolant in the processing tank 2 from flowing directly to the outlet 25.

The drum filter 7 is rotated by the conveyor chain 32 of either the upper running belt 3A or the lower running belt 3B of the hinge belt 3 circulating in the processing tank 2 meshing with the drum sprocket 72. Here, two drum filters 7 are provided.

The operation of the chip discharging conveyor device 1 having the above-described configuration is as follows. Chip conveyor 1
The (drive) sprocket 41 is driven by the drive source M, and the endless hinge belt 3 runs in the direction of the arrow (FIG. 2) by the conveyor chain 32 assembled on the side of the hinge belt 3. When the turbid coolant containing the large chips and the small chips is introduced into the processing tank through the inlet 26, the large chips are removed from the upper traveling belt 3 of the hinge belt 3.
A is caught on the outer peripheral surface, and the processing tank 2 is
Is conveyed in the direction of the sprocket 41 obliquely above.

Large swarf caught on the outer peripheral surface of the upper traveling belt 3A of the hinge belt 3 and the lower traveling belt 3B of the tank bottom
The small swarf that has not settled to the side is returned near the fold of the hinge belt 3 by the sprocket 41 at the top of the belt functioning as the large swarf unloading mechanism 5, and is carried out by inversion. It is dropped into a large chip collection box 51 and collected.

On the other hand, the small swarf passes through the gap between the joints of the upper running belt 3A of the hinge belt that runs horizontally in the processing tank 2, the gap between both ends of the hinge belt and the side wall of the processing tank, the gap between the conveyor chains, and the like. The sprocket 4 sinks down, is caught and conveyed on the inner peripheral surface of the belt 3B traveling downward, and
2 is discharged by the screw conveyor 63 by the small chip discharge mechanism 6 provided inside the folded portion of the hinge belt 3 by the hinge belt 3, passes through the discharge path 64, and passes through the processing tank 2.
Is collected in a small chip collecting box 65 outside.

In this case, when small chips settled through the gap of the upper running belt 3A of the hinge belt 3 are not caught by the lower running belt 3B and further settle on the tank bottom 21 of the processing tank 2. Is conveyed along the tank bottom 21 by cleats 37 on the outer peripheral surface of the hinge belt 3 traveling along the tank bottom 21, and when it is turned over at the folded portion of the sprocket 42, a part of the hinge belt 3 drops and is small. It is collected by a chip collecting mechanism. However, the remaining small chips that do not fall at the turnback part are again in the upper traveling belt 3A.
And settled again on the lower traveling belt 3B of the hinge belt 3 that circulates and travels, and is transported and carried out in the same manner as described above. In addition, when large chips are formed on the upper traveling belt 3 </ b> A as long chips, the large chips are carried out by the large chip carrying mechanism 5.

In the course of this conveyance, the hinge belt 3
Is temporarily mounted on the drum filter 7 by the drum sprocket 72, and small chips flowing down from the hinge belt 3 adhere to the drum filter 7, and the lower traveling belt 3
It moves to the inner circumference of B. Here, when the hinge belt 3 rides on the drum filter 7, long chips, curled chips, and the like are on the outer peripheral surface of the hinge belt 3, and the hinge belt 3 is supported by the conveyor chains 32 on both outer sides. In this case, the drum filter 7 directly climbs up and does not come into contact with the drum filter 7, so that the drum filter 7 can be prevented from being damaged.

As described above, the chip discharge conveyor device 1 has a filtering function of the hinge belt 3 and the drum filter 7, and the turbid coolant supplied from the inlet 26 on the side of the processing tank is The purified coolant that has been purified by the filtering action of the hinge belt 3 and the filtering action of the drum filter 7 and has flowed into the drum filter 7
5, the cutting fluid of the machine tool, the filter member 74
It is reused as a cleaning solution for

Embodiment 2 will be described with reference to FIGS. In the following description of the second embodiment, the same members as those in the first embodiment will be denoted by the same reference numerals. As described in detail below, the chip discharge conveyor device 1 'of the second embodiment differs from the device of the first embodiment in that the hinge belt is mounted in the opposite direction and runs in the opposite direction. The structure of the unloading mechanism and its installation position are different.

The chip discharge conveyor device 1 'is shown in FIGS.
As shown in FIG. 2, an endless hinge belt 3 provided in a processing tank 2 and a conveyor chain 32 of the hinge belt
, A large and small chip discharge mechanism 5 ′, a small chip discharge mechanism 6 ′, and an upper and lower traveling belt 3 A of a hinge belt 3 horizontally traveling in the processing tank 2.
3B and a drum filter 7 installed between
The large chips are conveyed along the tank bottom 21 'by the lower traveling belt 3B.

The processing tank 2 has a tank bottom 21 ′ having a horizontal plate 21 A ′ formed over the center in the longitudinal direction of the processing tank, and an upwardly inclined plate extending only at one end of the horizontal plate 21 A ′. 2
1B, a driving sprocket 41 around which the hinge belt 3 is wound is provided above one end in the longitudinal direction of the processing tank 2.
The driven sprocket 42 is provided below the other end in the longitudinal direction (in the processing tank). In addition, 26 in FIG. 2 is an inlet for charging the turbid coolant into the processing tank 2 from the side.

The endless hinge belt 3 is the same as that of the first embodiment, and is as shown in FIG. 3, and a detailed description thereof will be omitted. The hinge belt 3 is wound around a sprocket 41 provided above one end in the longitudinal direction of the processing tank 2 and a sprocket 42 provided below (inside the processing tank) at the other end of the processing tank. Plate 21A 'and inclined plate 2
The lower traveling belt 3B is provided so as to travel along the tank bottom 21 substantially in parallel with the tank bottom 21 ′ composed of the base 1B.

The large and small swarf discharge mechanism 5 'is provided near the folded portion of the hinge belt 3 wound around the sprocket 41 provided above the one end of the processing tank 2 near the lower traveling belt 3B and the inclined plate tip 21D. The large chips are dropped and discharged out of the processing tank from the tip 21D of the inclined plate by the lower traveling belt 3B together with the small chips settled on the tank bottom 21 '.

The small chip discharging mechanism 6 'is shown in FIGS.
As shown in the figure, the large and small swarf unloading mechanism 5 ′ is provided above one end of the processing tank 2. The small chip discharge mechanism 6 ′ includes a chip receiving plate 61 ′ provided inside the vicinity of the folded portion of the hinge belt 3 wound around the sprocket 41, and a nozzle (not shown) for cleaning the inner peripheral surface of the hinge belt. And a screw conveyor 63 ′ for discharging small chips dropped on the receiving plate 61 ′ to the outside of the processing tank 2. The small swarf is caught by the inner peripheral surface of the hinge belt 3 that has traveled horizontally in the processing tank 2, and is spontaneously dropped inside the vicinity of the folded portion or by the cleaning liquid from the injection nozzle, and is thereby removed. , And is conveyed and discharged by the screw conveyor 63 '.

The drum filter 7 installed between the upper running belt 3A and the lower running belt 3B of the circulating hinge belt 3 is the same as that of the first embodiment, and is the one shown in FIG. is there.

The operation of the chip discharging conveyor device 1 'having the above-described structure is as follows. In the chip discharge conveyor device 1 ', the sprocket 41 is driven by the drive source M,
The endless hinge belt 3 is moved in the direction of the arrow by the conveyor chain 32 attached to the side of the hinge belt 3 (FIG. 9).
Will be run. When the turbid coolant containing the large chips and the small chips is charged into the processing tank from the input port 26,
The large chips are captured on the outer peripheral surface of the upper traveling belt 3A of the hinge belt 3, and the upper traveling belt 3A is carried to the terminal end of the other end of the processing tank while capturing the large chips, and is turned back and forth by the sprocket 42. I do. When turning back, the large chips are conveyed along the tank bottom 21 to the upper part of the inclined plate 2B at one end of the processing tank by the cleats 37 on the outer peripheral surface of the lower running belt 3B of the hinge belt 3, and the large and small chip discharging mechanism 5 'To be carried out. At this time, the tank bottom 21
The small chips that have settled down are also transported together with the large chips, dropped from the inclined plate tip 21B 'to the outside of the processing tank, and collected in the large and small chip collection box 51'.

On the other hand, the small chips settle down from the upper traveling belt 3A of the hinge belt 3 traveling horizontally in the processing tank 2 through a gap, and are captured and transported on the inner peripheral surface of the lower traveling belt 3B. Belt 3 by the sprocket 41
Are carried out by a small chip carrying-out mechanism 6 ′ provided inside the vicinity of the turn-back portion, and are discharged by the screw conveyor 63.

Although the embodiments have been described above, as the hinge plate, a perforated plate with a hole or a dimple plate with a protrusion may be used in addition to a plain plate without a hole. May be used in combination. The hinge plate is preferably made of steel, but may be made of plastic. As a small chip discharge mechanism, in addition to the screw conveyor, a normal belt conveyor or a coil conveyor may be used.In the case of using a coil conveyor, the combined use of a coolant flow, particularly a cleaning liquid flow from a nozzle, is used. It is convenient. Although several drum filters are used, the processing capacity can be increased by increasing the number of drum filters, and one conveyor device can be used for many machine tools.

[0044]

As described above, according to the present invention, the turbid coolant containing small chips cannot be processed by a single conveyor apparatus in the conventional hinge type conveyor apparatus. The provision of the large chip discharge mechanism and the small chip discharge mechanism allows the processing of turbid coolant containing all chips, such as turbid coolant containing large chips and small chips.
In particular, inside the folded portion of the hinge belt wound around the sprocket provided above the other end of the processing tank, small swarf carried on the inner peripheral surface of the lower traveling belt is transported to the outside of the processing tank. The small chip discharge mechanism is designed to be discharged to the inside of the hinge belt, so that small chips settled on the lower running belt through the upper running belt can be discharged from the inside of the folded portion of the hinge belt. It is possible to prevent chips from being enlarged on the peripheral surface.

A long chip is captured by the hinge belt, and small chips captured on the inner peripheral surface side of the hinge belt are discharged by a small chip discharging mechanism. In between, a drum filter can be provided to prevent damage to the drum filter due to long chips. Unlike the conventional case, the drum filter devices do not have to be juxtaposed, so that the space occupied by the chip discharge conveyor device can be reduced.

Further, since both large and small chips can be processed at the same time, the number of conveyors provided in the chip discharge conveyor device can be reduced to one, and the space occupied by the device can be reduced. In addition, a drum filter can be installed or added, and the increase in the number of filters can increase the processing capacity of the turbid coolant.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view of a chip discharge conveyor device according to a first embodiment of the present invention.

FIG. 2 is a schematic side view of the same chip carrying conveyor device.

FIG. 3 is a partial plan view of a hinge belt.

FIG. 4 is a perspective view of a side wing.

FIG. 5 is a side view for detailed explanation of a small chip discharging mechanism.

FIG. 6 is a plan view of the screw conveyor.

FIG. 7 is a schematic cross-sectional view in a state where a drum filter is installed.

FIG. 8 is a schematic perspective view of a chip discharge conveyor device according to a second embodiment.

FIG. 9 is a schematic side view of the same chip carrying conveyor device.

FIG. 10 is a side view for detailed description of a large and small chip discharging mechanism and a small chip discharging mechanism.

FIG. 11 is a plan view of the screw conveyor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1 'Chip discharge conveyor device 2 Processing tank 21, 21' Tank bottom 21A, 21A 'Horizontal plate 21B Inclined plate 21C Inclined plate 21D Inclined plate tip 22 Side wall 23 Support shaft 24 Bearing 25 Outlet 26 Inlet 3 Hinge Belt 3A Upper traveling belt 3B Lower traveling belt 31 Hinge plate 31A Hinge pipe 32 Conveyor chain 33 Belt pin 34 Link plate 35 Roller 36 Side wing 36A Wing plate 36B Mounting plate 37, 38 Cleat 41 Drive sprocket 42 Follower sprocket 5 Large chips Unloading mechanism 5 'Large and small chip discharging mechanism 51 Large chip collecting box 6, 6' Small chip discharging mechanism 61, 61 'Receiving plate 62 Cleaning nozzle 63, 63' Screw conveyor 64 Discharge path 65 Small chip collecting box 7 Drum filter REFERENCE SIGNS LIST 71 spoke 72 drum sprocket 73 crosspiece 74 filter member 75 annular rubber seal member 8 cleaning liquid pressure feed pipe 81 nozzle M drive source

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenichi Endo 5001, Ohno, Tsujiyama-cho, Koka-gun, Shiga Prefecture Inside Tsubakimoto Mayfran Co., Ltd. F-term (reference) in Mayfran Corporation 3C011 BB34

Claims (3)

[Claims] 1. A turbid coolant containing large and small chips is charged into a processing tank provided with an endless hinge belt having cleats on its outer peripheral surface, and large chips and small chips are applied to the hinge belt. In a chip carrying conveyor device configured to discharge these chips outside the processing tank, the processing tank has a tank bottom, and a horizontal plate formed over a central portion in a longitudinal direction of the processing tank. The endless hinge belt is formed by an upwardly inclined plate extending to both ends of the horizontal plate, and the endless hinge belt is wound around respective sprockets provided above both ends in the longitudinal direction of the processing tank.
A lower running belt is provided substantially parallel to the tank bottom and runs along the tank bottom. The processing tank has a hinge belt wound around a sprocket provided above one end of the processing tank. A large chip discharge mechanism configured to drop and discharge large chips caught on the outer peripheral surface of the upper traveling belt to the outside of the processing tank by the turnback portion, and a sprocket provided above the other end of the processing tank. A small chip discharge mechanism is provided inside the folded portion of the hinge belt wound around to discharge the small chips carried on the inner peripheral surface of the lower traveling belt to the outside of the processing tank. A chip discharge conveyor device, comprising: 2. A turbid coolant containing large and small chips is charged into a processing tank provided with an endless hinge belt having cleats on the outer peripheral surface, and large chips and small chips are applied to the hinge belt. In the chip discharge conveyor device configured to discharge these chips outside the processing tank, the processing tank has a horizontal plate having a tank bottom formed from the center in the longitudinal direction of the processing tank to the end thereof. And an upwardly inclined plate extending to one end side of the horizontal plate, wherein the endless hinge belt is provided in a sprocket provided above one end in the longitudinal direction of the processing tank and in the other end tank in the longitudinal direction. Is wound around a sprocket provided in the processing tank, and is provided so as to be substantially parallel to the tank bottom, and the lower traveling belt runs along the tank bottom. The processing tank is provided above one end of the processing tank. Wound on a sprocket In the vicinity of the turning part of the belt, the lower running belt running along the bottom of the tank and the tip of the inclined plate are formed. A small and large swarf discharge mechanism is provided, inside the folded portion of the hinge belt wound around the sprocket provided above the one end, the small swarf carried on the inner peripheral surface of the lower traveling belt. A chip discharge conveyor device, comprising a small chip discharge mechanism for discharging chips to the outside of a processing tank. 3. The chip conveying conveyor device according to claim 1, wherein a cleat is provided on an inner peripheral surface of the hinge belt.