JP3487802B2 - Chip conveyor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip conveyor for transporting chips (cutting chips) adhering to cutting oil generated during work of a machine tool such as a lathe from a collection position to a discharge position.

[0002]

2. Description of the Related Art As a conventional chip conveyor, the actual chip conveyor is used.
What is shown in 9-55645 is proposed. This chip conveyer receives a chip adhering to the lower part of the carrier immediately after the carrier moving around by carrying a chip containing cutting oil turns the discharge position, and has a large number of bottoms so that only the cutting oil can be filtered. A bucket provided with small holes is detachably arranged.

Further, air is blown from the air blowing holes of the air blowing nozzle toward the lower surface of the carrier to drop the chips attached to the lower surface of the carrier into the bucket, and the cutting oil attached to the chips is provided in the bucket. The oil is collected from a large number of small holes through an oil recovery pipe.

[0004]

However, in the conventional chip conveyer, when the chips ejected from the oil on the lower surface of the carrier are separated and collected by the air jetted from the air blowing nozzle, the bucket is periodically removed. This operation was troublesome because the chip had to be taken out and the chip discarded. If this work is neglected, not only will the chips in the bucket accumulate excessively, which will hinder the traveling of the carrier, but also
The first problem arises in that the chips invade the sliding parts of the parts constituting the carrier and wear the parts.

Further, since the method of blowing air is adopted, there is also a problem that the efficiency of removing chips attached to the surface of the carrier by oil is low. If a part of the chips adheres to the carrier even after the carrier has passed the discharge position, the residual chips will enter the sliding part of the mechanism that drives the carrier and reduce the durability of the drive mechanism. There is a second problem of causing it.

The present invention has been made in order to solve both of the above problems, and its first object is to reach the recovery position after passing the discharge position in order to solve the first problem. It is an object of the present invention to provide a chip conveyor that can reliably collect and discharge the chips remaining on the carrier after separating the chips.

A second object of the present invention is, in addition to the first object, to improve the efficiency of removing chips adhered to the surface of the carrier by oil in order to solve the second problem, and the chips are transferred. It is an object of the present invention to provide a chip conveyor that can prevent the parts that make up the body from invading the sliding parts and wearing the parts.

[0008]

In order to solve the above problems, the invention as set forth in claim 1 collects chips discharged from a machine tool or the like at a collecting position, and separates them from the collecting position by a predetermined distance. In a chip conveyor equipped with an endless carrier that can be circulated in a predetermined direction so as to convey and discharge the chips to the discharge position, the forward side is the upper side of the carrier from the collection position to the discharge position. , The lower side of the transport body from the discharge position to the return position to the collection position is defined as a return path, and the transport body is sandwiched between the transfer body corresponding to the return path from above and below the storage tank. The liquid is caused to flow out from a plurality of pipes having an outflow hole for supplying the liquid or a flat nozzle having a plurality of the outflow holes, or the liquid supply nozzles are arranged at a plurality of positions, and the liquid is supplied to the carrier. Chip separation means for dropping or jetting and supplying chips to separate the chips attached to the carrier, and corresponding to the chip separation means, a storage tank for temporarily storing the separated chips is provided. Is provided with a chip automatic discharging means for discharging the collected chips continuously and automatically, and the chip separating means is provided in front of the return path.
Adhesion to the carrier due to the liquid cross-linking adhesive force of the oil component
The adhesive strength of the liquid bridge is reduced or
When liquid is applied to release the
Chip is separated into liquid and collected in a storage tank.
The storage tank is a liquid storage tank, and the chip separating means is
Liquid is fed to the carrier on the return path above the liquid storage tank.
To gently act on the chips attached to the carrier.
The chip is configured to be separated and collected in a liquid storage tank.
The automatic discharge means is a screw conveyor installed in the liquid storage tank.
A, a belt conveyor or a bucket conveyor,
The liquid tank is provided with liquid replenishing means for replenishing liquid.
The storage tank is provided with a discharge means for discharging excess liquid,
The surplus liquid discharging means installs the surplus liquid at the recovery position.
The surplus liquid is provided with means for flowing down to the digitized chip recovery liquid tank.
The body draining means has a sedimentation area in the middle thereof,
Settling and collecting the relatively fine chips separated inside
The summary is that it is configured as described above.

[0009]

[0010]

[0011]

[0012]

[0013]

[0014]

According to a second aspect of the present invention, in the first aspect , the fine chip sedimentation and recovery means is a flat-shaped gutter that discharges the excess liquid by causing it to flow substantially horizontally at a slow speed. To do.

The invention according to claim 3 is the same as claim 1 or
In 2 , the means for causing the fine chips to settle comprises a fine chip automatic discharging means for discharging the fine chips to the outside.

According to a fourth aspect of the present invention, in the first aspect , the automatic chip ejecting means is driven in conjunction with the circular movement of the carrier.

A fifth aspect of the present invention is based on the first aspect , and the gist is that the liquid storage tank includes means for stirring the liquid.

According to a sixth aspect of the present invention, in the fourth aspect , the stirring means is configured by disposing a liquid supply nozzle so that a swirl flow is generated in the liquid around the carrier. And

A seventh aspect of the present invention is based on the first aspect , wherein the liquid that reduces or releases the liquid cross-linking adhesive force is a coolant liquid.

According to an eighth aspect of the present invention, in the fourth aspect , an auxiliary liquid storage tank is provided on a side wall of the liquid storage tank, and a drive mechanism of the chip automatic discharging means is provided in the auxiliary liquid storage tank. The main point is that a part of it is housed.

According to a ninth aspect of the present invention, in the fourth aspect , the carrier is rotated by a single motor,
The gist is that the automatic chip ejection means is operated by the driving force of the motor.

A tenth aspect of the present invention is based on the ninth aspect , and the gist is that the automatic chip ejecting means is operated by a driving force of the motor directly or without passing through a carrier.

[0024] According to an eleventh aspect of the present invention, in the first aspect , the discharge cylinder for discharging the chips of the automatic chip discharging means is a chip discharged from the turning point of the forward path and the backward path of the carrier. The gist is that it is formed so as to be deflected so that the chips can be dropped into the collection box.

[0025]

[0026]

[0027]

[0028]

[0029]

[0030]

[0031]

[0032]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which the present invention is embodied in a chip conveyor used in a machine tool will be described below with reference to FIGS.

FIG. 4 shows the entire chip conveyor K. Although not shown on the side of the chip conveyor K, chips (cutting chips) are generated when a machine tool is arranged and a product cutting operation is performed. A chip conveyor K is mounted on the floor so that the chips can be collected and transported to another position.

A water-soluble or oil-based coolant liquid C is stored in the chip recovery liquid tank 11 arranged at the chip recovery position, and the lower horizontal portion of the conveyor body 12 is stored in the chip recovery liquid tank 11. It is arranged. The trough 13 of the conveyor body 12 includes a lower horizontal recovery part 14 that extends horizontally in the chip recovery liquid tank 11, a rising part 15 that extends obliquely upward from the downstream end of the horizontal recovery part 14, and a rising part 15 of the rising part 15. It is composed of an upper horizontal discharge section 16 that extends substantially horizontally from the upper end to the discharge position.

Sprockets 17a and 17b are rotatably supported in the lower horizontal recovery section 14 and the upper horizontal discharge section 16 of the trough 13, and these sprockets 17a and 17b are rotatably supported.
An endless carrier 18 is hung between b. A plurality of transfer scrapers 19 are arranged outside the transfer body 18 at predetermined intervals. As shown in FIG. 4, a motor 39 is fixed to the upper surface of the upper horizontal discharge portion 16, and a drive sprocket wheel 45 fitted to an output shaft 39a of the motor 39 is provided.
A chain 45c is hung between a and the driven sprocket wheel 45b fitted to the support shaft 24 supporting the sprocket 17b. Then, by driving the motor 39, the carrier 18 is rotated in the counterclockwise direction shown in FIG. 4 along the lower horizontal collecting section 14, the rising section 15, and the upper horizontal discharging section 16.

Above the carrier 18, the trough 1
A filter device 20 is provided on the lower horizontal recovery section 14 of the third filter 3. The lower opening 21a of the casing 21 that constitutes the filtering device 20 and the upper opening 14 of the lower horizontal recovery unit 14
It is communicated with a. A charging port 21b is formed on the upstream side wall of the casing 21, and a downstream end of a gutter 22 extending into the casing 21 is inserted into the charging port 21b. The coolant C containing the chips 23 discharged from the machine tool is poured into the casing 21 through the gutter 22. The tip 23 is a mixture of a sinking tip 23 a that sinks below the coolant surface W in the casing 21 and a floating tip 23 b that floats on the coolant surface W. This coolant level W,
A position where the rising portion 15 of the conveyor body 12 intersects with the carrier 18 is a floating chip collecting position α. The upper surface of the carrier 18 facing below the gutter 22 is the sedimentation chip collecting position β.

Next, the chip separating / collecting device 25 mounted on the lower side of the upper horizontal discharging section 16 will be described.
In this embodiment, the forward path is the upper side of the carrier 18 from the chip recovery liquid tank 11 located at the recovery position of the chips 23 to the upper horizontal discharge section 16 located at the discharge position.
In addition, the lower side of the carrier 18 from the discharge position to the tip recovery liquid tank 11 is used as a return path.

The upper horizontal discharge section 16 is provided with left and right side plates 26, 26 for supporting the support shaft 24 of the sprocket wheel 17b on which the carrier 18 is mounted.
6, 6 and 26 are open between the front end portions and between the lower side portions. A part of the chip 23 carried by the carrier 18 is dropped from the carrier 18 folded back at the tip opening of the upper horizontal discharge part 16 as shown by the arrow in FIG. 1, and is collected in the recovery box B1 shown in FIG. Be recovered.

At the lower ends of the side plates 26, 26, there is provided a chip separating / collecting device 25 for separating and collecting the chips 23 attached without being dropped from the folded portion of the carrier 18 from the carrier 18. It is installed. The side plate 26,
Flange metal fittings 27 and 27 are fixed to the outside of 26 by welding or the like, and flange metal fittings 29 and 29 welded to the liquid storage tank 28 are fixed to the flange metal fittings 27 and 27 by bolts 30 and nuts 31.

The liquid storage tank 28 is formed in the shape of a horizontally long rectangular tube whose upper surface is open to the lower surface of the horizontal discharge portion 16, the lower portion is converged into a triangular (tapered) cross section, and the lower end is arcuate cross section. Is formed.

In the liquid storage tank 28, a support shaft 33 has a bearing 34,
34 is rotatably supported via 34, and a pair of sprocket wheels 35, 35 for detouring the carrier 18 into the liquid storage tank 28 are attached to the support shaft 33. The carrier 18 is provided on the inner surfaces of the side plates 26, 26.
Guide flanges 36 and 37 are provided for guiding the circulation of both side edges.

In this embodiment, the support shaft 33 and the bearing 3 are provided.
4, 34 and the sprocket wheels 35, 35 constitute a winding mechanism for the carrier 18. The liquid storage tank 28
The coolant C is stored in the internal space 38, and the carrier 23 is immersed in the coolant C while detouring and inverting, so that the chips 23 attached to the carrier 18 are separated. The separated chips 23 settle to the bottom of the liquid storage tank 28. A screw conveyor 40 is attached to the lower end arcuate portion of the liquid storage tank 28 as an automatic chip discharging means for discharging this.

Explaining the screw conveyor 40, a discharge gutter 28a is formed in the lower part of the liquid storage tank 28 in parallel with the support shaft 33, and one of the liquid storage tanks 28 is formed corresponding to the discharge gutter 28a. A rotary shaft 42 is supported on the side wall 28b via a bearing 41, and a screw blade 44 is fixed by welding to the outer periphery of a mounting shaft cylinder 43 fitted to the rotary shaft 42. Reference numeral 45 is a pin that connects the rotating shaft 42 and the mounting shaft cylinder 43. A drive sprocket wheel 46 is attached to one outer end of the support shaft 33, and a driven sprocket wheel 47 is attached to an outer end of the rotary shaft 42.
Are fitted and fixed. Both sprocket wheels 4
A chain 48 is hung on 6, 47.

The position of the outer peripheral edge of the tip of the screw blade 44 of the screw conveyor 40 is regulated by the inner peripheral surface of the inlet of the discharge cylinder 50. On the outer wall of the liquid storage tank 28, the sprocket wheels 46 and 47, the chain 4
An auxiliary liquid storage tank 49 for covering 8 and the like is provided. On the other side wall of the liquid storage tank 28, a discharge tube 50 connected to the discharge gutter 28a is attached obliquely upward. The height of the tip opening of the discharge tube 50 is set above the liquid level of the coolant C in the liquid storage tank 28.

As shown in FIG. 2, the internal space 38 of the liquid storage tank 28 communicates with the internal space 51 of the auxiliary liquid storage tank 49 through the opening 28c formed in the side wall 28b. The coolant liquid is supplied from a pump 52 and a pipe 53 as a liquid replenishing means for supplying the coolant. A coolant liquid cleaner 54 is provided in the chip recovery liquid tank 11, and the coolant liquid purified by the cleaner 54 is supplied to the pump 52.
And the pipe 53 to the auxiliary liquid storage tank 49.

As shown in FIG. 1, the liquid storage tank 28 is provided between the shooter 55 and the liquid storage tank 28 which constitute the rising portion 15.
A discharge gutter 56 for discharging the coolant liquid C therein to the shooter 55 side is suspended substantially horizontally. This drain gutter 5
Reference numeral 6 also serves as a settling and collecting means for settling and collecting the fine chips 23 contained in the coolant on the bottom surface of the discharge trough 56 when the coolant C is returned to the chip collecting liquid tank 11 side.

A dam plate 56a is provided at an end of the discharge gutter 56 on the shooter 55 side so that the fine chips 23 do not move to the shooter 55 side. As shown by the chain line in FIG. 1, the bottom of the drain gutter 56 is a dish-shaped recess 56.
By providing b, the settling amount of the chip 23 can be increased.

As shown in FIG. 1, at the opening edge of the liquid storage tank 28 on the sprocket wheel 17b side, the lower surface of the carrier 18 folded back from the sprocket wheel 17b is spaced from the folded back end by a predetermined distance. A shooter 57 for covering is arranged, and both side edges of the shooter 57 are provided on the side plate 2.
It is fixed to 6, 26 by welding or the like. Chips 2 dropped from the carrier 18 inverted by the shooter 57
3 and the coolant liquid C are introduced into the liquid storage tank 28.

The position of the leading edge of the shooter 57 may be the position shown by the solid line in FIG.
By being located in the immediate vicinity of the perpendicular line passing through the turning point P of 8, it is possible to reduce the amount of the coolant liquid dropped in the recovery box B1.

Next, the operation of the chip conveyor constructed as described above will be described. When the coolant liquid C containing the chips 23 from the machine tool flows down through the gutter 22 into the casing 21, the settling chips 23a settle near the settling chip collecting position β, and each transport scraper 19
Recovered in the meantime. The floating tip 23b floats on the coolant surface W. Then, the settling chips 23 a and the floating chips 23 b are carried by the carrier 18, move upward in the rising portion 15 and move to the opening of the upper horizontal discharging portion 16. At this time, the relatively large sedimentation chip 23a is mainly dropped and collected in the collection box B1.

Also, some chips 23a and floating chips 2
3b moves to the inside of the liquid storage tank 28 of the chip separating / collecting device 25 while remaining attached to the carrier 18 even after being inverted by the sprocket wheel 17b of the carrier 18, and the coolant C
Soaked in. Here, with the coolant liquid C, the tip 2
3 is separated and falls to the discharge gutter 28a.

On the other hand, the spindle 3 is rotated by the orbiting of the carrier 18.
3 is rotated, the drive sprocket wheel 46,
The screw blade 44 is rotated via the chain 48, the driven sprocket wheel 47, and the rotary shaft 42, and the tip 23 lowered to the discharge gutter 28 a is transferred toward the discharge cylinder 50 by the screw blade 44. This discharge tube 5
The chips 23 dropped from 0 are collected in the collection box B2 shown in FIG.

Next, the chip separation and
The effects of the recovery device 25 will be listed together with the configuration. (1) In the above-described embodiment, the liquid storage tank 28 is attached to the lower portion of the upper horizontal discharge unit 16, the liquid such as the coolant liquid C is stored in the liquid storage tank 28, and the carrier 18 is bypassed in the liquid. Thus, the chips 23 attached to the carrier 18 can be separated from the surface of the carrier 18 in the liquid storage tank 28.

The principle of separating the chip 23 from the surface of the carrier 18 will be described. Here, it is assumed that the chips 23 are aluminum particles, and the aluminum particles adhere to the surface of the carrier 18 in the air due to the oil component contained in the coolant. In this state, the carrier 18
And aluminum particles are liquid cross-linking adhesive force due to oil, and the vane-gill-waals (van.
der Waals) force to attach. The liquid adhesive strength of the former is remarkably larger than the latter's Vouin-Jill-Waals force for all particle sizes. Therefore, by exposing the entire aluminum particles with the coolant, the liquid-crosslinking adhesive force can be removed, and only the adhesive action by the Van-Jill-Walls force can be used. This Vuang Jill
Compared to the case where the surroundings are air, the adhesion force of the liquid is much smaller in the case of the liquid. By reducing the adhesive force in this way, the aluminum particles are effectively separated from the carrier 18 by being exposed to the coolant.

(2) In the above-described embodiment, the screw conveyor 40 is provided as the chip automatic discharging means for discharging the chips 23 deposited in the lower portion of the liquid storage tank 28 to the outside of the liquid storage tank 28. Can be discharged.

(3) In the above-described embodiment, since the orbiting motion of the carrier 18 is used as the driving force of the screw conveyor 40, the screw conveyor 40 can be continuously rotated during the orbiting operation of the carrier 18. The chip can be surely discharged from the liquid storage tank 28, and it is not necessary to separately provide a dedicated drive source, and the configuration can be simplified.

(4) In the above embodiment, since the drain gutter 56 is provided between the liquid storage tank 28 and the shooter 55, the liquid storage tank 2
8 through the discharge trough 56 to the shooter 55, the flow rate of the liquid is 0.1 to 1 m / min.
The fine chips 23 contained in the coolant are settled on the bottom surface of the discharge trough 56 by adjusting the degree (the slower the flow velocity, the more reliable the settling of the fine chips). Therefore, the fine chips 23 can be recovered, and the cleaner 54 for filtering the coolant in the chip recovery liquid tank 11 is not clogged, and the maintenance and inspection thereof can be easily performed.

(5) In the above embodiment, the tip of the upper horizontal discharge section 16 is opened, the chips 23 are allowed to fall naturally, and the chips 23 that have not fallen are separated by the chip separating / collecting device 25. Therefore, the supply amount of the coolant liquid C supplied into the liquid storage tank 28 can be minimized.

(6) In the above embodiment, an auxiliary liquid storage tank 49 for covering the sprocket wheels 46, 47 and the like is further mounted on the side portion of the liquid storage tank 28, and the auxiliary liquid storage tank 49 is provided with the auxiliary liquid storage tank 49. Since the coolant liquid C in 28 is stored, the seal structure of the bearings 34 and 41 can be omitted, and therefore the structure can be simplified.

(7) In the above embodiment, since the coolant liquid C is supplied into the auxiliary liquid storage tank 49, clean coolant liquid is supplied into the auxiliary liquid storage tank 49, and therefore the screw conveyor 40 is used. It is possible to improve the durability by eliminating the biting of the chip into the drive mechanism.

(8) In the above embodiment, since the height of the tip end opening of the discharge tube 50 is set to be higher than the liquid level of the coolant C in the liquid storage tank 28, the chips discharged from the discharge tube 50. The amount of coolant liquid adhering to 23 can be reduced.

(9) In the above-described embodiment, the liquid storage tank 28 for containing the liquid that allows the carrier 18 on the backward path to be dipped and passed therethrough.
And a sprocket wheel 35, 35 provided as a wrapping mechanism in the liquid storage tank 28, which bypasses the carrier 18 and reversely moves, thereby forming a chip separating / collecting device 25, and discharging the upper side horizontally. The lower part of the portion 16 is formed so as to be removable. Therefore, the structure of the chip separation / collection device 25 can be simplified, and the attachment / detachment work can be easily performed.

The above embodiment may be modified and embodied as follows. .As shown in FIG. 5, the carrier 1
8 may be installed substantially horizontally, and the separation / collection device 25 for the chip 23 may be mounted in the vicinity of the discharge part separated from the collection part for the chip 23.

This other embodiment also has the same effects as the effects (1), (3), (5), (6) and (7) of the above-described embodiment. In the above-described embodiment, the chip recovery liquid tank 11 that stores the coolant may be omitted, and the chips with the cutting oil may be dropped on the upper surface of the transfer body 18 and transferred to the discharge position side. .

As shown in FIG. 6, the tip of the carrier 18 on the side of the horizontal discharge part 16 can be housed in the liquid storage tank 28 of the chip separating / collecting device 25. In this embodiment, all the chips 23 of the carrier 18 can be collected in the liquid storage tank 28, and the structure can be simplified as compared with the structure of separating and discharging. Other effects are the same as the effects (1), (3), (5), (6), and (7) of the above-described embodiment.

As shown in FIG. 7, a cover 61 whose opening can be opened and closed is provided at the tip of the horizontal discharge part 16 so that the rotational position can be adjusted by a shaft 62. You can also do it.

In this embodiment, the cover is closed when the chips that are not easily dropped from the carrier 18 are separated and discharged, and the cover 61 is opened when the chips that are easily dropped are discharged or for maintenance. can do.
Other effects are the effects (1) and (3) of the above embodiment.
It is similar to the effects of (5), (6) and (7).

As shown in FIG. 8, the horizontal discharge part 16 may be sealed and only the chip separating / collecting device 25 may be provided. In this embodiment, all the chips 23 of the carrier 18 can be collected in the liquid storage tank 28, and the structure can be simplified as compared with the structure of separating and discharging. Other effects are the effects (1) of the above embodiment.
The effects are the same as (3), (5), (6), and (7).

As shown in FIG. 9, a chip separating / collecting device 25 may be mounted in the middle of the rising portion 15. In this embodiment, the space below the rising portion 15 can be effectively used. Other effects are the effects (1) of the above embodiment.
The effects are the same as (3), (5), (6), and (7).

As shown in FIG. 10, the supply nozzle 71 for the coolant liquid C is directed to the carrier 18 from a direction orthogonal to the moving direction of the carrier 18 in the reservoir 28, or the liquid tank 28. The coolant liquid C in the liquid storage tank 28 may be agitated by arranging so that a swirl flow is generated therein.

Although not shown, this stirring means may employ a system in which a screw is rotated in the liquid storage tank. In this another example, the coolant C in the liquid storage tank can be stirred to give momentum, and therefore a shearing force can be applied to the oil component for adhering the carrier and the chips (aluminum particles) to the carrier 18. The removal rate of chips (aluminum particles) from the surface of the can be improved.

As shown in FIG. 11, a sprocket wheel 72 different from the driven sprocket wheel 45b is fitted to the outer end portion of the support shaft 24, and a chain 48 is attached to the sprocket wheel 72 and the driven sprocket wheel 47. You may. Alternatively, the drive sprocket wheel 45a may be a double wheel, and a chain 48 may be mounted between this wheel and the driven sprocket wheel 47 as shown by the chain line in FIG.

In this alternative example, compared with the power transmission mechanism of this embodiment, the rotation of the screw conveyor 40 can be properly performed in synchronization with the rotational movement of the motor 39, and the chip discharging operation can be smoothly performed. Further, since the common motor 39 is used, it is possible to provide a single safety mechanism when the carrier 18 and the screw conveyor 40 are overloaded, and the motor 39 has an independent control circuit configuration. It can be simplified compared to the driving method by, and manufacturing can be easily performed.

The screw conveyor 40 may be driven by an independent dedicated motor. In this case, the ejection operation of the chips 23 can be properly performed according to the ejection amount of the chips by the operation signal of the control device.

The discharge tube 5 as shown in FIGS.
An elbow-shaped portion 50a extending horizontally in the structure of No. 0 and curved obliquely upward, and a trumpet-shaped portion 50b integrally connected to the tip portion thereof and formed so that the passage area increases toward the tip portion. You may comprise by. A tip guide plate 50c is attached to the tip edge of the trumpet-shaped portion 50b.

In this another example, the chips 23 discharged from the discharge cylinder 50 can be collected by one collecting box B1, and the collecting box B2 can be omitted. As shown by the solid line in FIG. 14, a jet nozzle 81 (liquid supply means) for the coolant liquid C is arranged inside the carrier 18, the jetted coolant liquid C is jetted to the back surface of the carrier 18, and thereafter. Alternatively, the coolant liquid C may be supplied to the liquid storage tank 28. Further, as shown by a chain line in FIG. 14, the injection nozzle 81 may be arranged outside the carrier 18.

In this other example, a part of the chip 23 attached to the carrier 18 before entering the liquid storage tank 28 is removed,
The chips 23 that have not been removed in the liquid storage tank 28 can be removed and moved to the liquid storage tank 28, the recovery efficiency can be improved, and the coolant C can be replenished.

The different examples shown in FIGS. 15 and 16 differ from the structure of the above-described embodiment in the means for reducing or canceling the liquid bridge adhesion force of the chips attached to the carrier 18.
That is, in the above-described embodiment, the method in which the carrier 18 is inserted into the liquid storage tank 28 is adopted, but in this another example, the carrier 18 is sandwiched above the liquid storage tank 28 from above and below, and the coolant is applied. Pipe 9 for supplying liquid C
1 is provided at a plurality of locations. Then, the coolant liquid C flowing out from the outflow hole 91a of each pipe 91 is gently acted on the carrier 18 to reduce or cancel the liquid bridge adhesion force. Instead of the pipe 91, FIG.
As shown in FIG. 7, the flat nozzle 92 has a large number of outflow holes 92.
You may use what provided a.

In this other example, since the structure for diverting the carrier 18 into the liquid storage tank 28 is not necessary, the structure can be simplified and the manufacturing and assembling work can be easily performed. As shown in FIG. 18, the carrier 18 is not diverted to the inside of the liquid storage tank 28, the supply nozzles 95 for supplying the coolant C to the carrier 18 are arranged at a plurality of positions, and the coolant C is supplied to the carrier 18. Alternatively, the chips may be separated from the carrier 18 by dropping or jetting and supplying them to the liquid storage tank 28.

Further, instead of the supply nozzle 95, a mop, a fixed brush, a rotating brush, a nozzle for injecting air,
Alternatively, other chip separating means such as a vibration applying mechanism may be used, or these may be used together.

Although not shown, the bottom of the discharge gutter 56 is deeply formed, and the screw conveyor 4 described above is provided on the bottom.
It is also possible to provide a small fine chip automatic discharging means similar to the 0 and the discharging cylinder 50. This fine chip automatic discharging means is driven in conjunction with the circular movement of the carrier 18.

In this alternative embodiment, the fine chips that settle in the discharge trough 56 can be automatically discharged. -In place of the coolant liquid C, for example, water, a cleaning liquid, or the like can be used.

In place of the screw conveyor 40,
Although not shown, a scraping mechanism using a scraper, a belt conveyor, a bucket conveyor, or a fluid transfer mechanism may be used.

The discharge cylinder 50 may be a flexible cylinder so that the discharge direction of the chip 23 can be changed. -Although not shown, the sprocket wheel 35 and the screw blades 44 may be provided at a plurality of positions in front of and behind the liquid storage tank 28.

The technical ideas other than the claims that can be understood from the above-described embodiment will be listed below. (Technical idea 1) In claim 1 or 2 , the liquid replenishing means supplies the liquid pumped through the cleaner for filtering the liquid in the chip recovery liquid tank 11 to the liquid storage tank 28 or the auxiliary liquid storage tank 49. The chip conveyor configured in.

In this chip conveyor, the liquid in the chip recovery liquid tank 11 can be used, and the chip conveyor can also serve as a cleaner and a pump. (Technical idea 2) The chip conveyor according to claim 5 , wherein the means for stirring the liquid is arranged such that the liquid supply nozzle is directed toward the carrier 18.

With this chip conveyor, the chips can be efficiently separated from the carrier 18. (Technical idea 3) The chip conveyor according to claim 2 , wherein the weir plate is provided on the outlet side of the gutter.

In this chip conveyor, the weir plate is used to
It is possible to prevent various chips from flowing out to the recovery liquid tank.
It (Technical idea 4) In the above (Technical idea 3), the gutter
Is provided with a recess for sinking and depositing fine chips
There is a chip conveyor.

With this chip conveyor, fine chips can be efficiently deposited. (Technical idea 5) The chip conveyor according to claim 4 , wherein the carrier is revolved by a motor, and the chip automatic discharging means is operated by a motor different from the motor.

In this technical idea 5, the automatic chip ejection means is used.
The emission amount of is independently controlled by the operation signal from the controller.
The chip discharging operation can be properly performed. (Technical idea 6) In claim 1, the chip separating means.
Is a mop, fixed brush, rotating brush, air nozzle, or
Is a chip conveyor that is a vibration imparting mechanism.

[0091]

[0092]

Since the present invention is constructed as described above, it has the following effects. According to the invention of the chip conveyor as set forth in claims 1 to 11 , the chips remaining on the carrier that has passed the discharge position to the collection position are separated and collected in the storage tank, and the chips are automatically collected from the storage tank. In addition, it can be reliably discharged. In addition, since the structure for circumventing the transport body inside the liquid storage tank is not required, the structure can be simplified and the manufacturing and assembling work can be easily performed.

According to the first aspect of the present invention, a liquid is caused to act on the chip attached to the carrier on the backward path by the liquid bridge adhesion force due to the oil component so as to reduce or cancel the liquid bridge adhesion force. Therefore, the structure of the chip separating means can be simplified.

[0094] Further, the chips adhering to the gentle effect is caused by the carrier liquid in the carrier of go-around path is separated in the liquid. Thus to recover the liquid after separation in the liquid storage tank It is not necessary to change the design of the backward path of the carrier, and the structure can be simplified and the manufacturing and assembling work can be easily performed.

[0095] Further, since the liquid reservoir automatic chip discharge means for discharging chips that have been separated and recovered in the liquid to the outside of the storage tank is provided, it is possible to discharge chips easily .

Moreover , the liquid can be easily replenished to the liquid storage tank by the liquid replenishing means.

[0097] In addition, can be easily discharged by the discharging means the excess liquid storage tank.

[0098] Further, it is possible to effectively use flows down into the chip collecting tank provided with excess liquid storage tank to the collecting position. Further , relatively fine chips can be settled and collected in the settling area provided in the middle of the means for discharging the excess liquid.

According to the second aspect of the present invention, the sedimentation and recovery means for fine chips can be formed at low cost by a simple flat gutter. According to the invention of claim 3 , the chips collected by the fine chip automatic discharging means can be easily discharged to the outside.

According to the fourth aspect of the present invention, the chip discharging operation can be appropriately performed in conjunction with the circular movement of the carrier. In the invention according to claim 5 , since the liquid in the liquid storage tank is agitated, the chips can be efficiently separated from the carrier.

According to the sixth aspect of the present invention, a swirl flow can be generated in the liquid around the carrier in the liquid storage tank to further efficiently separate the chips. The invention according to claim 7 is
Since the liquid in the liquid storage tank is the coolant liquid used for machine tools and the like, it is not necessary to use a dedicated liquid, and therefore the operating cost can be reduced.

According to the eighth aspect of the invention, the seal structure can be simplified by eliminating the need for the shaft seal of the drive mechanism of the automatic chip discharging means provided in the auxiliary liquid storage tank. Claim 9
According to the invention described above, since the carrier and the automatic chip ejecting means are driven by a single motor, it is possible to provide a single safety device at the time of overload and simplify the motor control circuit.

According to the tenth aspect of the present invention, the chip automatic discharging means can be appropriately driven to smoothly perform the chip discharging operation. According to the eleventh aspect of the invention, the chips discharged from the carrier and the chips discharged from the discharging cylinder on the chip automatic discharging means side can be collected by one collecting box.

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[Brief description of drawings]

FIG. 1 is a sectional view showing a chip separating / discharging device embodying the present invention.

FIG. 2 is a sectional view taken along line 1-1 of FIG.

3 is a sectional view taken along line 2-2 of FIG.

FIG. 4 is a sectional view showing the entire chip conveyor.

FIG. 5 is a schematic front view showing another embodiment of the present invention.

FIG. 6 is a schematic front view showing another embodiment of the present invention.

FIG. 7 is a cross-sectional view of a main part showing another embodiment of the present invention.

FIG. 8 is a sectional view of an essential part showing another embodiment of the present invention.

FIG. 9 is a cross-sectional view of a main part showing another embodiment of the present invention.

FIG. 10 is a cross-sectional view of a main part showing another embodiment of the present invention.

FIG. 11 is a front view of a main portion showing another embodiment of the present invention.

FIG. 12 is a front view of a main portion showing another embodiment of the present invention.

13 is a perspective view of the discharge cylinder of FIG.

FIG. 14 is a sectional view of an essential part showing another embodiment of the present invention.

FIG. 15 is a sectional view of an essential part showing another embodiment of the present invention.

16 is a sectional view taken along line 3-3 of FIG.

FIG. 17 is a perspective view of a pipe showing another embodiment of the present invention.

FIG. 18 is a cross-sectional view of a main part showing another embodiment of the present invention.

[Explanation of reference numerals] 11 ... Chip recovery liquid tank, 12 ... Conveyor body, 13 ...
Trough, 14 ... Lower horizontal collecting section, 15 ... Ascending section, 16 ...
Upper horizontal discharge section, 17a, 17b ... Sprocket wheel, 18 ... Conveyor, 23 ... Chip, 25 ... Chip separation
Discharge device, 26 ... Side wall, 28 ... Liquid storage tank, 35 ... Sprocket wheel, 40 ... Screw conveyor, 42 ... Rotating shaft, 44 ... Screw blade, 50 ... Discharge tube, 56 ... Discharge gutter also serving as sedimentation recovery means, 52 ... A pump as a liquid supply means.

Claims (11)

(57) [Claims] 1. An endless carrier which collects chips discharged from a machine tool or the like at a collecting position and conveys the chips to a discharging position separated from the collecting position by a predetermined distance in a predetermined direction. In the chip conveyor installed so as to be able to go around, the upper side of the carrier from the collection position to the discharge position is the forward path, and the lower side of the carrier from the discharge position to the return position is the return path. , A plurality of pipes or a plurality of outflow holes each having an outflow hole for supplying the liquid, which is provided in the transfer body corresponding to the same return path so as to sandwich the transfer body above the storage tank from above and below. A liquid is flown out from the flat nozzle, or liquid supply nozzles are arranged at a plurality of positions, and liquid is dropped or jetted and supplied to the carrier to separate chips attached to the carrier. A separating tank for temporarily storing the separated chips in correspondence with the chip separating means, and the collected chips are continuously and automatically discharged into the storing tank. the automatic chip discharge means is provided, said chip
The separating means uses an oil component on the carrier on the return path.
Liquid chips are attached to the chips that are attached by the adhesive force.
Act on the liquid to reduce or release cross-linking adhesion.
The chips attached to the carrier are separated into the liquid.
It is to be collected in a storage tank, and the storage tank is a liquid storage tank.
Therefore, the chip separating means is restored above the liquid storage tank.
Liquid is gently applied to the carrier on the path to carry the same.
The chips attached to the body will be separated and collected in a liquid storage tank.
The automatic chip discharging means is arranged in the liquid storage tank.
On a conveyor, belt conveyor or bucket conveyor
There is no liquid replenishing means for replenishing the liquid in the liquid storage tank.
The storage tank is provided with a discharge means for discharging excess liquid.
The surplus liquid discharging means installs the surplus liquid at the recovery position.
A means for flowing down to the column for collecting chip waste is provided, and the means for discharging the excess liquid is provided with a sedimentation area in the middle thereof.
The relatively fine chips separated in the liquid storage tank.
A chip conveyor characterized by being configured to store. 2. The sedimentation of fine chips according to claim 1.
The recovery means is to flow the excess liquid at a slow speed almost horizontally.
A chip conveyor that is a flat gutter that discharges . 3. The fine chain according to claim 1 ,
The means to settle the chips is to discharge the fine chips to the outside.
Chip conveyor equipped with a means for automatically discharging fine chips . 4. The automatic chip ejection means according to claim 1 .
Is driven in conjunction with the circular movement of the carrier.
That chip conveyor. 5. The liquid storage tank according to claim 1 , wherein the liquid storage tank stores liquid.
Chip conveyor equipped with stirring means . 6. The stirring means according to claim 4 , wherein the stirring means is a liquid.
A swirling flow is generated in the liquid around the carrier from the supply nozzle of
A chip conveyor configured by arranging as described above . 7. The liquid cross-linking adhesive force according to claim 1 ,
The liquid to be reduced or released is a coolant, which is a chip conveyor. 8. The side wall of the liquid storage tank according to claim 4 ,
Is equipped with an auxiliary liquid storage tank.
A chip conveyor in which a part of the drive mechanism of the automatic ejecting means is housed . 9. The carrier according to claim 4 , wherein the carrier is a single member.
It is rotated by a motor and the automatic chip ejection means
A chip conveyor that is driven by the driving force of a motor . 10. The automatic tip ejection according to claim 9 ,
The output means is driven directly by a driving force of the motor or through a carrier.
A chip conveyor that is operated without . 11. In any one of claims 1, before
The tip ejector of the tip automatic ejector is
It is discharged from the turning point of the forward and backward paths of the body
It is formed so that the chips can be dropped into the chip collection box.
The chip conveyor.