JP2002233927A - Chip conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a chip conveyer capable of surely separating residual chips adhering to a transporter in the return stroke and discharging the same, improving durability of the transporter and a driving mechanism, and improving the degree of freedom in design to facilitate construction. SOLUTION: A chip separating and collecting device 25 is mounted on the lower side of an upper horizontal discharge part 16 side of the transporter 18 for discharging chips of the chip conveyer. A liquid for reducing or releasing a liquid cross-linking adhesive force is applied from a pipe 91 constituting the device 25 to the chip adhering to the transporter 18 by liquid cross-linking adhesive force produced by oil component, thereby separating the chip adhering to the transporter 18 into a liquid. The separated chip is discharged from a liquid storing vessel 28 to the outside by a screw conveyer 40.

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 transferring chips (cutting chips) to which cutting oil generated during the operation of a machine tool such as a lathe from a receiving position to a discharging position, and a chip separating device used therefor. -It is related to the collection device.

[0002]

2. Description of the Related Art A conventional chip conveyor is known as Shokai 5
Japanese Patent Application Laid-Open No. 9-55645 has proposed. This chip conveyor receives a large number of chips at the bottom so that it can receive the attached chips under the same carrier immediately after the carrier that circulates and moves the chip containing the cutting oil returns to the discharge position, and can only filter the cutting oil. A bucket provided with a small hole is detachably arranged.

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

On the other hand, the applicant of the present application has disclosed Japanese Patent Application Laid-Open No. 63-1236.
No. 56 has proposed a chip conveyor. This chip conveyor is provided with an endless mesh belt inside a horizontal frame and an inclined frame, and transports and removes chips in a chip receiving liquid tank that stores a coolant liquid arranged at a chip receiving position by rotating the belt. It has become. Further, between the front running portion and the back running portion of the mesh belt in the inclined frame, an injection member for spraying the cleaning liquid toward the back running portion of the mesh belt is disposed, and the back running portion of the mesh belt is disposed. It is designed to be washed.

[0005]

However, in the former conventional chip conveyor, the chips adhered to the lower surface of the carrier by oil can be reliably separated and collected depending on the air jetted from the air blowing nozzle. There was a problem that it was not possible. The chips can be separated from the carrier by increasing the pressure of the air from the spray nozzle, but it is necessary not only to consider a structure for preventing the scattering of the air and the chips, but also to supply the pressure fluid. There is also a problem that it becomes necessary.

Further, in the latter chip conveyor, similarly to the former chip conveyor, the chips cannot be reliably removed only by spraying the cleaning liquid onto the mesh belt, and the cleaning liquid and chips are prevented from scattering. In addition to the necessity of considering the structure for the above, there is a problem that a supply source of the pressure fluid is required.

If a part of the chips adheres to the carrier even after the carrier has passed the discharge position, the remaining chips enter the sliding portions of the components constituting the carrier and wear the components. Or the intrusion into the sliding part of the mechanism that drives the carrier, reducing the durability of the drive mechanism, or the work of removing residual chips that fall down and accumulate at the receiving position and are manually removed. There is a problem that the number of times increases.

Further, as a conventional technique, there has been proposed an apparatus for separating cutting water recorded on a microfilm described in Japanese Utility Model Application No. 60-78003 (Japanese Utility Model Application Laid-Open No. 61-191849). This separation device receives chips from a machine tool in a tank, and receives a chip conveyor that discharges chips from the tank and a cutting water that is dropped onto a chip conveyor under a head pulley below the head pulley without dropping the chips. Is provided. Further, the separating device is provided with a pipe for collecting the falling cutting water on the lower side of the receiving plate.

[0009] However, in the above-mentioned conventional separating apparatus, only a small part of the cutting water is provided in a return path from the turning point of the head pulley to the return point at which the end conveyor starts to enter the tank via the inclined plate. Is returned to the tank, but it is almost impossible to collect the chips attached to the carrier on the receiving plate.

The receiving plate and the pipe allow only a small amount of cutting water to flow down. Since the cutting water is focused on the pipe inside the receiving plate, a small amount of cutting water is stored. However, this cutting water is not used for separating the residual chips attached to the carrier.

[0011] In the above-mentioned conventional separation device, the liquid cross-linking adhesive force is reduced with respect to the chip attached to the carrier by the liquid cross-linking adhesive force due to the oil component corresponding to the return path which is the gist of the present invention. Alternatively, the technical idea of separating the chip adhering to the carrier into the liquid by applying the liquid to release the liquid is not disclosed or suggested.

The conventional separating device collects cutting water dropped from the carrier by a receiving plate and then returns the cutting water to a tank by a pipe, so that the return path of the conveying member is provided inside the receiving plate. There is no motivation to change the design and enter. Even if a part of the carrier enters, the chips are hardly separated due to the small amount of cutting water.

By the way, providing a discharge mechanism such as a screw conveyor below the receiving liquid tank at the chip receiving position provided in correspondence with the machine tool is extremely difficult because the underground pit must be excavated deeply. Yes, the installation costs are very high. On the other hand, when the receiving liquid tank at the chip receiving position is raised to the ground to eliminate underground pits, it is necessary to raise the machine tool, which raises the problem that the raising work cannot be easily performed and the cost increases. Also, in this case, there is a problem that the work position of the work becomes high and the operation of the work becomes inconvenient.

The chips once placed on the chip conveyor are:
There are some which return to the receiving position without adhering to the collection box at the discharge position and adhering to the conveyor due to the liquid bridge adhesive force. This accumulates in the receiving liquid tank at the receiving position. The amount of this return tip is so large that a return of more than 50% occurs in the case of aluminum processing, so that the receiving liquid tank becomes full immediately, the operation of the machine tool is stopped, and the cutting water is drained to remove the residual tip. Had to be recovered. In one example, 2
This collection was required once every 3 days.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to separate and collect chips remaining on a carrier in a return path and to improve the durability of the carrier and the drive mechanism. It is an object of the present invention to provide a chip conveyor which can improve the degree of freedom and improve the degree of freedom in installing the separation means for the residual chips and can easily perform the construction.

[0016]

In order to solve the above-mentioned problems, the invention according to claim 1 receives a chip discharged from a machine tool or the like at a receiving position and discharges the chip at a predetermined distance from the receiving position. In a chip conveyor provided with an endless carrier so as to be able to circulate in a predetermined direction so as to convey and discharge chips to a position, the receiving position is predetermined with a horizontal component corresponding to the machine tool or the like. The length is set, the upper and lower sides of the carrier at the receiving position of the carrier as a receiving path, the end of the receiving position,
In other words, the upper side of the carrier from the discharge start point at which chip discharge starts to the return point at the discharge position is defined as the forward path, and the lower side of the transport body from the return point to the return point returning to the receiving position is retraced. A path, and a liquid is gently acted on the chip attached to the carrier by liquid cross-linking adhesive force corresponding to the return path, so as to reduce or cancel the liquid cross-linking adhesive force. The gist of the present invention is to provide a chip separating means for separating chips attached to a carrier into a liquid and collecting the separated liquid in a liquid storage tank.

According to a second aspect of the present invention, in the first aspect, the liquid storage tank is provided with an automatic chip discharging means for discharging the chips separated and recovered in the liquid to the outside of the liquid storage tank. The point is that

The third aspect of the present invention is the first or second aspect.
In the above aspect, the liquid storage tank is provided with a discharging means for discharging surplus liquid. According to a fourth aspect of the present invention, in the third aspect, the means for discharging the surplus liquid includes means for flowing the surplus liquid to a chip receiving liquid tank provided at the receiving position.

The invention described in claim 5 is the invention according to claim 3 or 4
The gist of the present invention is that the surplus liquid discharging means is provided with a sedimentation area in the middle thereof to sediment and collect relatively fine chips separated in the liquid storage tank.

According to a sixth aspect of the present invention, in the fifth aspect, the means for settling and recovering fine chips is a flat gutter for flowing and discharging surplus liquid almost horizontally at a slow speed. I do.

According to a seventh aspect of the present invention, in the sixth aspect, the fine chip settling and recovering means includes a fine chip automatic discharging means for discharging the fine chips to the outside.

According to an eighth aspect of the present invention, in the second aspect, the automatic chip discharging means is driven in conjunction with the orbital movement of the carrier. Claim 9
The gist of the invention described in (1) or (2) is that the liquid for reducing or canceling the liquid cross-linking adhesive force is a coolant liquid.

According to a tenth aspect of the present invention, in the eighth aspect, an auxiliary liquid storage tank is provided on a side wall of the liquid storage tank, and the driving mechanism of the automatic chip discharging means is provided in the auxiliary liquid storage tank. The gist is that a part is accommodated.

[0024] According to an eleventh aspect of the present invention, in the eighth aspect, the carrier is rotated by a single motor.
The gist of the invention is that the automatic chip ejection means is operated by the driving force of the motor.

According to a twelfth aspect of the present invention, in the eleventh aspect, the automatic chip discharging means is operated directly by a driving force of the motor or without passing through a carrier.

According to a thirteenth aspect, in the eighth aspect, the automatic chip discharging means is a screw conveyor,
A belt conveyor or a bucket conveyor, and a discharge cylinder for discharging chips is formed so as to be capable of dropping chips into a collection box for chips discharged from a turning point of a forward path and a return path of a carrier. The point is that

According to a fourteenth aspect of the present invention, in the first aspect, a plurality of pipes for supplying a coolant liquid are provided so as to sandwich the carrier from above and below.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing the present invention, an embodiment in which a technical concept similar to the present invention is embodied in a chip conveyor used in a machine tool will be described with reference to FIGS. .

FIG. 4 shows the entire chip conveyor K. A machine tool MC is arranged beside the chip conveyor K,
When a product is cut, chips (cutting chips) are generated. A chip conveyor K is mounted on the floor so that the chips can be received and transported to another position.

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

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

Above the transport body 18, the trough 1
A filtering device 20 is provided on the lower horizontal receiving section 3. A lower opening 21a of a casing 21 constituting the filtering device 20 and an upper opening 14 of the lower horizontal receiving portion 14
is communicated with a. An inlet 21b is formed in 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 inlet 21b. Then, the coolant liquid C including the chips 23 discharged from the machine tool MC flows through the casing 21 through the gutter 22.
It is designed to be poured inside. This chip 23
The sedimentation tip 23a that sinks below the coolant level W in the casing 21 and the floating tip 23b that floats on the coolant level W are mixed. The intersection of the coolant level W and the carrier 18 at the rising portion 15 of the conveyor body 12 is the floating chip receiving position α. Further, the upper surface of the transport body 18 facing the lower side of the gutter 22 is a settling chip receiving position β.

Next, the chip separating / collecting device 25 mounted below the upper horizontal discharge section 16 will be described.
In this embodiment, as shown in FIG. 4, the chip receiving liquid tank 11 provided corresponding to the machine tool MC is moved from the machine tool MC to the gutter 2.
2 is a receiving position for the chips 23 discharged through the nozzle 2. The receiving position is set to a predetermined length with a horizontal component corresponding to the machine tool MC. The upper and lower sides of the transport body 18 at this receiving position are defined as a receiving route R1. In addition, the end of the receiving position (the receiving route R1 of the transporting member 18), that is, the upper side of the transporting member 18 from the discharge starting point E1 at which the chip is discharged to the turning point E2 where the sprocket 17b is located at the discharging position, travels along the forward path. R2. Further, the lower side of the transport body 18 from the turning point E2 to the return point E3 returning to the receiving position (receiving path R1) is defined as a return path R3. The forward route R2 and the backward route R3 are substantially parallel.

The upper horizontal discharge portion 16 includes left and right side plates 26, 26 for supporting a support shaft 24 of the sprocket wheel 17b on which the carrier 18 is mounted.
The space between the distal end portions and the lower portion of each of the first and second portions is open. A part of the chips 23 transported by the transport body 18 is dropped from the transport body 18 turned back at the front end opening of the upper horizontal discharge section 16 as shown by the arrow in FIG. 1 and is collected into the collection box B1 shown in FIG. Collected.

At the lower ends of the side plates 26, 26, a chip separation / collection device 25 for separating and collecting the chips 23 that have adhered without falling from the turning point E2 of the carrier 18 from the carrier 18. Is installed. The side plate 2
Flange fittings 27, 27 are fixed to the outer sides of the flanges 26, 26 by welding or the like.
Flange fittings 29, 29 welded to are fixed by bolts 30 and nuts 31.

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

In the liquid storage tank 28, a support shaft 33 has a bearing 34,
A pair of sprocket wheels 35 are attached to the support shaft 33 so as to detour the carrier 18 into the liquid storage tank 28. On the inner side surfaces of the side plates 26, 26, the carrier 18 is provided.
Guide flanges 36 and 37 are provided to guide the circulation of the both side edges.

In this embodiment, the support shaft 33, the bearing 34,
34 and a sprocket wheel 35 constitute a mechanism for winding the carrier 18. The coolant C is stored in the internal space 38 of the liquid storage tank 28, and the chips 23 attached to the carrier 18 are separated by immersing the coolant 18 in the coolant C while turning around. Is done. The separated chips 23 settle to the bottom of the liquid storage tank 28. A screw conveyor 40 is attached to the lower circular arc portion of the liquid storage tank 28 as an automatic chip discharging means for discharging the liquid.

The screw conveyor 40 will be described. A discharge gutter 28a is formed below the liquid storage tank 28 in parallel with the support shaft 33. One of the liquid storage tanks 28 corresponds to the discharge gutter 28a. A rotating shaft 42 is supported on the side wall 28b via a bearing 41, and a screw blade 44 is fixed to the outer periphery of the mounting shaft tube 43 fitted to the rotating shaft 42 by welding. Reference numeral 45 denotes a pin for connecting the rotary shaft 42 and the mounting shaft cylinder 43. A driving sprocket wheel 46 is attached to one outer end of the support shaft 33, and a driven sprocket wheel 47 is attached to the outer end of the rotating shaft 42.
Are fitted and fixed. The two sprocket wheels 4
A chain 48 is mounted 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 tube 50. The two sprocket wheels 46 and 47, the chain 4
An auxiliary storage tank 49 is provided for covering 8 and the like. 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 opening of the distal end of the discharge cylinder 50 is set higher than the 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 an opening 28c formed in the side wall 28b. The coolant liquid is supplied from a pump 52 and a pipe 53 as liquid supply means for supplying the coolant. The chip receiving liquid tank 11 is provided with a coolant cleaner 54, and the coolant purified by the cleaner 54 is supplied to the pump 52.
The liquid is supplied to the auxiliary liquid storage tank 49 through the pipe 53.

As shown in FIG. 1, a liquid storage tank 28 is provided between a shooter 55 constituting the rising portion 15 and the liquid storage tank 28.
A discharge gutter 56 for discharging the coolant C in the inside to the shooter 55 side extends substantially horizontally. This discharge gutter 5
Reference numeral 6 also serves as a sedimentation recovery means for causing the fine chips 23 contained in the coolant to settle and collect on the bottom surface of the discharge gutter 56 when returning the coolant C to the chip receiving liquid tank 11 side.

At the end of the discharge gutter 56 on the shooter 55 side, a weir plate 56a is provided to prevent the fine chips 23 from moving to the shooter 55 side. The bottom of the discharge gutter 56 is indicated by a chain line in FIG.
By providing b, the amount of sedimentation of the chip 23 can be increased.

As shown in FIG. 1, at the opening edge of the 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 folding point E2 by a predetermined distance. A shooter 57 for covering is arranged, and both side edges of the shooter 57 are fixed to the side plates 26 by welding or the like. The chips 23 and the coolant C falling from the transporting body 18 inverted by the shooter 57 are guided 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 passing through the turning point E2 of FIG. 8, the amount of the coolant liquid dropped on the collection box B1 can be reduced.

Next, the operation of the chip conveyor configured as described above will be described. When the coolant C containing the chips 23 from the machine tool MC flows down into the casing 21 through the gutters 22, the settling chips 23a settle near the settling chip receiving position β and are received between the transport scrapers 19. . The floating tip 23b floats on the coolant level W. Then, the settling tip 23a and the floating tip 23b are transported by the transport body 18, and
5 and moves to the opening of the upper horizontal discharge portion 16. At this time, the relatively large sedimentation tip 23
a is dropped and collected in the collection box B1.

Also, some chips 23a and floating chips 2
3b moves into the liquid storage tank 28 of the chip separation / recovery device 25 while being attached to the carrier 18 even after the carrier 18 is inverted by the sprocket wheel 17b, and the coolant C
Soaked inside. Here, chip 2 is added with coolant C.
3 are separated and descend to the discharge gutter 28a.

On the other hand, the support shaft 3
3 is rotated so that the driving 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 descended to the discharge gutter 28 a is transferred toward the discharge tube 50 by the screw blade 44. This discharge tube 5
The chips 23 dropped from 0 are collected in a collection box B2 shown in FIG.

Next, the chip separation and
The effects of the collection device 25 are listed together with the configuration. (1) In the above-described embodiment, the liquid storage tank 28 is attached to the lower part of the upper horizontal discharge part 16 corresponding to the retrace route R3 of the transport body 18, and the liquid such as the coolant liquid C is stored in the liquid storage tank 28. The carrier 18 is detoured in the liquid. For this reason, the liquid acts on the chips adhered to the carrier by the liquid cross-linking adhesive force due to the oil component so as to reduce or cancel the liquid cross-linking adhesive force, and the chips 23 adhered to the carrier 18 are removed The liquid can be efficiently separated from the surface of the carrier 18 in the liquid storage tank 28.

Further, a liquid storage tank 28 as a means for separating residual chips adhering to the carrier 18 and a screw conveyor 40 as an automatic chip discharging means are provided corresponding to the carrier 18 in the return path R3. Therefore, as compared with the case where they are installed below the chip receiving liquid tank 11, the underground pit does not need to be excavated deeply, the degree of freedom in installation is improved, and the construction work can be easily performed.

The principle that the chip 23 separates from the surface of the carrier 18 will be described. Here, the chip 23 is assumed to be aluminum particles, and it is assumed that the aluminum particles adhere to the surface of the carrier 18 in the air due to the oil component contained in the coolant liquid. In this state, the carrier 18
And the aluminum particles have a liquid cross-linking adhesive force due to the oil, and Vuan Jill Waals between the aluminum particles and the carrier 18 (van.
(der. Waals) force. The former liquid bridge adhesion is significantly greater for all particle sizes than the latter, Vuan Jill Waals. Therefore, by exposing the entire aluminum particles with the coolant liquid, the liquid cross-linking adhesive force can be removed, and only the adhesive action by the Vuan-Jill-Waals force can be achieved. This Vuan Jill
As for the Waals force, the liquid has a much smaller adhesive force than the surrounding air. By reducing the adhesive force, the aluminum particles are effectively separated from the carrier 18 by exposing the aluminum particles to the coolant liquid.

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

(3) In the above embodiment, the orbiting motion of the carrier 18 is used as the driving force of the screw conveyor 40, so that it is not necessary to separately provide a dedicated driving source, and the configuration can be simplified. it can.

(4) In the above embodiment, since the discharge gutter 56 is provided between the liquid storage tank 28 and the shooter 55, the process of discharging the coolant from the liquid storage tank 28 to the shooter 55 through the discharge gutter 56. In this case, the flow rate of the liquid is set to about 0.1 to 1 m per minute (the lower the flow rate, the more surely the sedimentation of the fine chips is ensured). Settles. For this reason,
The fine chips 23 can be collected, and
The clogging of the cleaner 54 for filtering the coolant liquid in the chip receiving liquid tank 11 is eliminated, and the maintenance and inspection thereof can be easily performed.

(5) In the above embodiment, the upper horizontal discharge portion 16
Of the coolant C to be supplied into the liquid storage tank 28 because the tip 23 is opened, the chips 23 are allowed to fall naturally, and the chips 23 that have not fallen are separated by the chip separation / recovery device 25. Can be minimized.

(6) In the above-described embodiment, an auxiliary storage tank 49 that covers the sprocket wheels 46 and 47 and the like is further attached to the side of the storage tank 28, and the storage tank 28 is provided in the auxiliary storage tank 49. Since the coolant liquid C inside is stored, the sealing structure of the bearings 34 and 41 can be omitted, and the configuration can be simplified.

(7) In the above embodiment, the auxiliary storage tank 49
The coolant liquid C is supplied to the inside, so that a clean coolant liquid is supplied to the auxiliary liquid storage tank 49. Therefore, the biting of the chips into the drive mechanism of the screw conveyor 40 is eliminated, and the durability is improved. can do.

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

(9) In the above-described embodiment, the liquid storage tank 28 for storing the liquid to be immersed and passed through the carrier 18 in the return path R3.
And a sprocket wheel 35, 35 provided in the liquid storage tank 28 and serving as a winding mechanism for bypassing and moving around the carrier 18, constitutes a chip separation / recovery device 25. The lower part of the part 16 is formed so as to be removable. For this reason, the configuration of the chip separation / collection device 25 can be simplified, and the desorption operation can be easily performed.

The above embodiment can be embodied with the following modifications. In the following embodiments, members having the same functions as those of the above embodiment are denoted by the same reference numerals, and detailed description is omitted.

As shown in FIG. 5, a sprocket wheel 72 different from the driven sprocket wheel 45b is fitted to the outer end of the support shaft 24, and the chain 4 is attached to the sprocket wheel 72 and the driven sprocket wheel 47.
8 may be mounted. Also, drive sprocket wheel 4
5a may be a double wheel, and a chain 48 may be mounted between the wheel and the driven sprocket wheel 47 as shown by a chain line in FIG.

In this embodiment, as compared with the power transmission mechanism of the above embodiment, the rotation of the screw conveyor 40 is properly performed in synchronization with the rotation of the motor 39, and the chip discharging operation can be performed smoothly. In addition, since the common motor 39 is used, a single safety mechanism can be provided when an overload is applied to the conveyor 18 and the screw conveyor 40, and the control circuit of the motor 39 has an independent motor configuration. Can be simplified as compared with the driving method, and the manufacturing can be easily performed.

The screw conveyor 40 may be driven by an independent dedicated motor. In this case, the discharge operation of the chips 23 can be appropriately performed according to the discharge amount of the chips by the operation signal of the control device.
As shown in FIGS. 6 and 7, the structure of the discharge cylinder 50 extends horizontally and curves obliquely upward, and the elbow-shaped part 50a is integrally connected to the distal end, and the passage area increases toward the distal end. It may be constituted by a flared portion 50b formed to be large. A tip guide plate 50c is attached to a tip edge of the flared portion 50b.

In this embodiment, the chips 23 discharged from the discharge tube 50 can be collected by one collection box B1, and the collection box B2 can be omitted. -Instead of the structure of the discharge tube 50 shown in Fig. 7, a discharge tube 50 in which a gutter portion 50d is formed at the upper end of the elbow-shaped portion 50a as shown in Fig. 8 may be used. Further, as shown in FIG. 9, an elbow-shaped discharge tube 50 may be used in which a plurality of band plates are welded to form a rectangular tube as a whole.

Next, the main part of the present invention will be described with reference to FIGS. The other configurations, operations, and effects are the same as those in the above-described embodiment. The main part of the present invention is different from the configuration of the above-described embodiment in the means for reducing or canceling the liquid bridging adhesive force of the chip attached to the carrier 18. That is, in the above-described embodiment, a method is adopted in which the transport body 18 enters the liquid storage tank 28, but in this embodiment, the coolant 18 is sandwiched from above and below the liquid storage tank 28 so as to sandwich the coolant 18. A plurality of pipes 91 for supplying C are provided. And the outflow holes 91 of each pipe 91
The coolant liquid C that has flowed out of FIG. 1a is gently applied to the carrier 18 so as to reduce or cancel the liquid crosslinking adhesion. Instead of the pipe 91, a flat nozzle 92 having a large number of outflow holes 92a as shown in FIG. 12 may be used.

In this embodiment, the carrier 18 is connected to the liquid storage tank 2.
Since there is no need to provide a configuration for bypassing the inside of the device 8, the structure can be simplified and the manufacturing and assembling operations can be easily performed. -Although not shown, the bottom of the discharge gutter 56 is formed deeply,
At the bottom, a small and small automatic chip discharging means similar to the screw conveyor 40 and the discharge cylinder 50 described above can be provided. The means for automatically ejecting fine chips is provided by the carrier 18.
It is driven in conjunction with the orbital movement of.

In this alternative embodiment, fine chips settling in the discharge gutter 56 can be automatically discharged. -Instead 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 scraper scraping mechanism, a belt conveyor, a bucket conveyor, or a fluid transfer mechanism may be used.

The discharge cylinder 50 may be formed as 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 locations in the liquid storage tank 28 before and after.

The technical ideas other than the claims that can be grasped from the above-described embodiments are listed below. (Technical idea 1) The chip conveyor according to claim 6, wherein the gutter is provided with a weir plate on an outlet side.

In this chip conveyor, fine chips can be prevented from flowing out to the receiving liquid tank by the weir plate. (Technical Thought 2) The chip conveyor according to the above (Technical Thought 1), wherein the trough is provided with a concave portion for sedimenting and depositing fine chips.

In this chip conveyor, fine chips can be efficiently deposited. (Technical idea 3) The chip conveyor according to claim 9, wherein the carrier is rotated by a motor, and the automatic chip discharging means is operated by a motor different from the motor.

In this (technical idea 3), the chip discharge operation can be properly performed by independently controlling the discharge amount of the chip automatic discharge means by the operation signal from the control device. (Technical Thought 4) The chip conveyor according to claim 1, wherein the receiving position is provided with a receiving liquid tank for receiving a coolant liquid discharged from the machine tool together with the chips while accommodating a receiving path of the carrier.

[0074]

Since the present invention is configured as described above, the following effects can be obtained. According to the invention of the chip conveyor according to any one of claims 1 to 13, the liquid cross-linking adhesive force is reduced or released with respect to the residual chips adhered to the transporting body in the return path by the liquid cross-linking adhesive force due to the oil component. As a result, the liquid can be efficiently removed by the unique structure of acting, and the durability of the carrier and the drive mechanism can be improved.

Further, it is possible to improve the degree of freedom in installing the separation means for the residual chips adhered to the transporting member on the return path, thereby facilitating the construction. According to the second aspect of the present invention, since the liquid storage tank is provided with an automatic chip discharging means for discharging the chips separated and collected in the liquid to the outside of the liquid storage tank, the chips can be easily discharged. be able to.

According to the third aspect of the present invention, the surplus liquid in the liquid storage tank can be easily discharged by the discharging means. According to the fourth aspect of the present invention, surplus liquid in the liquid storage tank can flow down to the chip receiving liquid tank provided at the receiving position and be used effectively.

According to the fifth aspect of the present invention, a relatively fine chip can be settled and collected in a settling area provided in the middle of the surplus liquid discharging means. The invention according to claim 6 is
The fine chip settling and collecting means can be formed at low cost by a simple flat gutter.

According to the seventh aspect of the present invention, the chips collected by the fine chip automatic discharging means can be easily discharged to the outside. According to the invention described in claim 8, the chip discharging operation can be appropriately performed in conjunction with the orbital movement of the carrier.

According to the ninth aspect of the present invention, since the liquid in the liquid storage tank is a coolant liquid used for a machine tool or the like, it is not necessary to use a dedicated liquid, and thus the operating cost can be reduced.

According to the tenth aspect of the present invention, the shaft seal of the drive mechanism of the automatic chip discharging means provided in the auxiliary storage tank is not required, and the seal structure can be simplified. Claim 1
According to the invention described in (1), since the carrier and the automatic chip ejection means are driven by a single motor, the safety device at the time of overload can be made one and the control circuit of the motor can be simplified.

According to the twelfth aspect of the present invention, it is possible to appropriately drive the automatic chip discharging means and smoothly perform the chip discharging operation. According to the thirteenth aspect of the present invention, the chips discharged from the carrier and the chips discharged from the discharge cylinder on the automatic chip discharging means side can be collected by one collection box.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a chip separation / discharge device similar to the present invention.

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

FIG. 3 is a sectional view taken along line 2-2 of FIG. 1;

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

FIG. 5 is a front view showing another embodiment.

FIG. 6 is a front sectional view showing another embodiment.

FIG. 7 is a perspective view of a discharge cylinder used in the embodiment of FIG. 6;

FIG. 8 is a perspective view showing a modified example of the discharge tube.

FIG. 9 is a perspective view showing a modified example of the discharge cylinder.

FIG. 10 is an essential part cross sectional view showing the embodiment of the present invention;

FIG. 11 is a sectional view taken along line 3-3 in FIG. 10;

FIG. 12 is a perspective view of a nozzle showing another embodiment of the present invention.

[Explanation of symbols]

11 chip receiving liquid tank, 12 conveyor body, 13 trough, 14 lower horizontal receiving section, 15 rising section, 16 upper horizontal discharging section, 17a, 17b sprocket wheel, 18 carrier, 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 cylinder, 56 ... discharge gutter serving also as sedimentation recovery means, R1 ... Receiving route, R2 ... Outgoing route, R3 ... Return route.

Claims (14)

[Claims] An endless carrier is received in a predetermined direction so as to receive a chip discharged from a machine tool or the like at a receiving position, and to convey and discharge the chip to a discharging position separated by a predetermined distance from the receiving position. In a chip conveyor that is rotatably mounted, the receiving position is set to a predetermined length with a horizontal component corresponding to the machine tool or the like, and an upper side and a lower side of the transporter at the receiving position among the transporters. Is the receiving route,
The end of the receiving position, that is, the upper side of the carrier from the discharge start point at which chip discharge is started to the return point at the discharge position is set as a forward path, and the transport body from the return point to the return point returning to the receiving position. The lower side is a return path, and the liquid is attached to the carrier by the liquid cross-link adhesion by the oil component corresponding to the return path so as to reduce or cancel the liquid cross-link adhesion. A chip conveyor for gently acting to separate chips adhering to the carrier into a liquid and collecting the separated liquid in a liquid storage tank. 2. A chip conveyor according to claim 1, wherein said liquid storage tank is provided with an automatic chip discharging means for discharging chips separated and collected in a liquid to the outside of said liquid storage tank. 3. A chip conveyor according to claim 1, wherein said liquid storage tank is provided with a discharge means for discharging surplus liquid. 4. The chip conveyor according to claim 3, wherein the means for discharging the surplus liquid includes means for flowing the surplus liquid to a chip receiving liquid tank provided at the receiving position. 5. A chip according to claim 3, wherein said surplus liquid discharging means has a sedimentation area in the middle thereof so as to sediment and collect relatively fine chips separated in the liquid storage tank. Conveyor. 6. The chip conveyor according to claim 5, wherein the means for settling and collecting the fine chips is a flat gutter for flowing and discharging the surplus liquid at a slow speed substantially horizontally. 7. The chip conveyor according to claim 6, wherein the settling and collecting means of the fine chips includes a fine chip automatic discharging means for discharging the fine chips to the outside. 8. The chip conveyor according to claim 2, wherein the automatic chip discharging means is driven in conjunction with the orbital movement of the carrier. 9. The chip conveyor according to claim 1, wherein the liquid for reducing or canceling the liquid crosslinking adhesion is a coolant liquid. 10. The liquid storage tank according to claim 8, wherein an auxiliary liquid storage tank is provided on a side wall of the liquid storage tank, and a part of a driving mechanism of the chip automatic discharge means is accommodated in the auxiliary liquid storage tank. Chip conveyor. 11. The chip conveyor according to claim 8, wherein the carrier is rotated by a single motor, and the automatic chip discharging means is operated by a driving force of the motor. 12. The chip conveyor according to claim 11, wherein said chip automatic discharge means is operated directly by a driving force of said motor or without using a carrier. 13. The chip automatic discharging means according to claim 8, wherein said chip automatic discharging means is a screw conveyor, a belt conveyor or a bucket conveyor, and the discharge cylinder for discharging chips is located at a turning point of a forward path and a return path of the carrier. A chip conveyor that is deflected so that chips can be dropped into a collection box for the chips to be discharged. 14. The chip conveyor according to claim 1, wherein pipes for supplying a coolant liquid are provided at a plurality of positions so as to sandwich the carrier from above and below.