JPH0558430A - Coupling spiral chip conveyor expandable, contractible and flexble - Google Patents

Abstract

PURPOSE:To use expandability, contractibility and flexibility of a spring joint to easily prevent foreign material or chips from cutting into the machine while removing oil from chips resulting from manufacturing of mechanical parts. CONSTITUTION:A spiral carrier part 20 is rotatively fitted to the bottom part of a gutter-like carrier channel 10 due to its tare weight in a manner that the tip 22 of the spiral carrier part 20 is separated from the tip wall 12 of the gutter-like carrier channel 10. The upper tip of the gutter-like carrier channel 10 is provided with a charge port 13 for chips 30 and the bottom part of the back end of the channel 10 is provided with a discharge port 14. An electric motor 40 which is a driving source applies turning efforts to the spiral carrier part 20. In addition, a spring joint 50 couples the output side of the electric motor 40 with the spiral carrier part 20 in a manner that the spiral carrier part 20 can be freely expanded, contracted and bent. The joint 50 is provided in opposition to the discharge port 14 so as to more effectively prevent chips from biting into the machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to a conveyor for chips (chips) produced during the manufacture of machine parts, and in particular, a spiral conveyor system is used to remove oil from chips covered with oil. The present invention relates to an expandable and contractible curving spiral chip conveyor that conveys the chips to a predetermined position. In particular, the present invention relates to an expandable / contractible spiral chip conveyor in which the drive unit and the spiral conveying unit are freely expandable / contractible.

[0002]

2. Description of the Related Art Conventionally, a chip conveyor has first been a belt conveyor type. Further, there is a spiral conveyor type, but the output side of the driving means such as the electric motor and the spiral conveying means for conveyance are connected by a universal joint. Further, this spiral conveyor type does not have a structure that is particularly oily.

[0003]

In the belt conveyor type, since the chips are covered with oil, it is difficult for the chips dropped from the component manufacturing machine to adhere to the conveyor belt and drop at a predetermined position. There was a flaw.

Further, the spiral conveyor type has a structure in which the bottom portion on the chip receiving port side is inclined so as to be lower than the bottom portion on the discharging port side, whereby oil can be formed, and chips are mounted on the conveyor. It has the advantage of not sticking. However, when a chip, especially a foreign object or a chip, which is conveyed between the trough-shaped conveying groove and the spiral conveying means is caught, the universal joint cannot sufficiently absorb the impact. To that end, a safety pin is provided in that case so that the electric motor of the drive source is not burnt by heating. Therefore, in this case, the safety pin jumps and the operation is stopped. Therefore, they had to go to the inspection each time, which was a great obstacle to full automation. Moreover, universal joints have limitations in terms of cost reduction.

In order to solve these problems, the patent applicant of the present invention invented the "expandable and curvable joint spiral chip conveyor" which is the basis of the priority claim of the present invention. A patent application was filed on March 20 (Japanese Patent Application No. 3-174692). However, this is because the tip of the spiral transfer section (chip input side) is open and the rear end (chip output side) is directly connected to the drive source, so the chip to be transferred is Is jammed between the spiral transport section and the gutter-shaped transport groove, the clogged chips are carried to the unreleased side.
There is a tendency for the spiral transport to become increasingly tight. Further, the above invention has a problem that the oil from the chip that is transported and oil is collected is accumulated in the trough-shaped transportation groove, so that the effect of the oil gap is deteriorated with use.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the expansion / contraction bending joint spiral chip conveyor according to the present invention prevents the adhesion of chips by making the conveyor spiral, and at the same time, its driving means. The joint for connecting the output side of (1) and the spiral conveying means for conveyance is a telescopic type such as a spring, which is expandable and contractible.

Further, the invention of claim 2 is such that the trough-shaped conveying groove is tilted so that the inlet side thereof is low and the outlet side thereof is slightly high, so that oil is removed. further,
The invention of claim 3 further improves the oiliness by making the drive source of the invention of claim 2 intermittently operable.

Further, in the inventions of claims 4 to 6, even if the spiral conveyors of the inventions of claims 1 to 3 are carried to the spiral conveyors by reversing the open ends of the spiral conveyors, respectively. Since the rear end of the spiral transfer section is open, the phenomenon that the chips sandwiched between each spiral transfer section and each gutter-shaped transfer groove is more and more tightly clamped in them disappears, and each spiral transfer section Less clogging of chips in the area. That is, each of the above spiral transport units is indirectly coupled to each of the above drive sources through each of the above driving sources and each of the above driving force transmission units provided between the above respective expandable and curl joints. It is assumed that the rear end of each spiral transport section is an open end.

According to the invention of claim 7, an oil outflow pore group is provided at the bottom near the tip of the trough-shaped conveying groove according to claim 1, 2, 3, 4, 5, or 6. It has been done.

The specific construction of the present invention will be described in detail below. First, the constitution of the invention of claim 1 of the expandable and contractible curved spiral chip conveyor according to the present invention will be described. First, there is a gutter-shaped transport groove. Next is the spiral transport section. The spiral transport unit is rotatably fitted to the bottom of the trough-shaped transport groove by its own weight, and is provided with the tip of the spiral transport unit separated from the tip wall of the trough-shaped transport groove. It has been done. And there is a drive source. This drive source gives a rotational force to the spiral transfer section. In addition, there is a flexible joint that can be freely expanded and contracted. This expandable / contractible joint joints the output side of the drive source and the spiral transport section so as to be expandable / contractible. Further, a tip insertion port is provided above the tip of the gutter-shaped transfer groove. Finally, there is an outlet. This discharge port is provided at the bottom of the rear end of the gutter-shaped transport groove.

Next, the construction of the invention of claim 2 of the expandable and curlable combination spiral chip conveyor according to the present invention will be described. Since this is the same as the configuration of the invention of claim 1 except for the following points, the entire description of the configuration of the invention of claim 1 is incorporated herein, and the description of the configuration below is added to this. .. Then, the gutter-shaped conveying groove is inclined so that the inlet side is low and the outlet side is slightly high.

Then, the structure of the invention of claim 3 of the expandable and contractible curving spiral chip conveyor according to the present invention will be described. Since this is the same as the configuration of the invention of claim 2 except for the following points, the entire description of the configuration of the invention of claim 2 is incorporated herein, and the description of the configuration below is added to this. .. Then, the control unit makes the drive source intermittently operable.

Further, the structure of the invention of claim 4 of the expandable and contractible curving spiral chip conveyor according to the present invention will be described. First, there is a gutter-shaped transport groove for transporting chips. Next is the spiral transport section. The spiral transport unit is rotatably fitted to the bottom of the trough-shaped transport groove by its own weight, and the rear end of the spiral transport unit is separated from the rear end wall of the trough-shaped transport groove. It is provided in the state. Then, there is a drive source such as an electric motor. This drive source gives a rotational force to the spiral transfer section. There is also a flexible joint that can be expanded and contracted. This expansion / contraction flexible joint expands / contracts the output side of the drive source and the spiral transfer section.
It is freely bendable and indirectly connected as described below. Finally, there is an outlet. This discharge port is provided at the bottom of the rear end of the gutter-shaped transport groove.

However, the above-mentioned spiral conveying section is indirectly connected to the above-mentioned driving source through the driving-force transmitting section provided between the above-mentioned driving source and the above-mentioned expandable bending joint.

Next, the construction of the invention of claim 5 of the expandable and curlable combination spiral chip conveyor according to the present invention will be described. Since this is the same as the configuration of the invention of claim 4 except for the following points, the entire description of the configuration of the invention of claim 4 is incorporated herein, and the description of the configuration below is added to this. .. Then, the gutter-shaped conveying groove is inclined so that the inlet side is low and the outlet side is slightly high.

Further, the construction of the invention of claim 6 of the expandable and contractible curving spiral chip conveyor according to the present invention will be described. Since this is the same as the configuration of the invention of claim 5 except for the following points, the entire description of the configuration of the invention of claim 5 is incorporated herein, and the description of the configuration below is added to this. .. Then, the control unit makes the drive source intermittently operable.

Finally, the construction of the invention of claim 7 of the expandable and curlable combination spiral chip conveyor according to the present invention will be described. This is the same as the configurations of the inventions of claims 1 to 6 except for the following points. Therefore, the entire texts of the description of the configurations of the inventions of claims 1 to 6 are incorporated herein by reference, and the following configurations are used. To each of them. Thus, each trough-shaped conveying groove is provided with an oil outflow pore group at the bottom near the tip thereof.

[0018]

The function of the expandable / contractible spirally coupled spiral chip conveyor according to the present invention has the following effects because it is constructed as described above. First, the operation of the invention of claim 1 of the expandable and contractible curved spiral chip conveyor according to the present invention will be described. First, the spiral transport unit is rotatably fitted to the bottom of the trough-shaped transport groove by its own weight, and the tip of the spiral transport unit is separated from the tip wall of the trough-shaped transport groove. When the spiral transport unit bites in a foreign substance or the like, the spiral transport unit slides or moves upward in the direction of the tip. Then, a drive source such as an electric motor gives a rotational force to the above spiral transport unit. Furthermore, since the expansion and contraction bending joint joints the output side of the drive source and the spiral transfer section so that they can expand and contract and bend freely, the spiral transfer section moves around this point as a fulcrum, and the spiral transfer section Automatically removes chips, etc., that are clogged with the gutter-shaped transport groove. Then, there is a chip insertion port at the upper end of the tip of the trough-shaped conveying groove, and the chip discharged from the component manufacturing machine enters from here. Finally, the chips are discharged into the chip container from the discharge port provided at the bottom of the rear end of the trough-shaped transport groove.

Next, the function of the invention of claim 2 of the expandable and contractible curved spiral chip conveyor according to the present invention will be described. Since this is the same as the operation of the invention of claim 1 except for the following points, the entire description of the operation of the invention of claim 1 is incorporated herein, and the following description of the operation is added thereto. .. Then, since the trough-shaped conveying groove is inclined in such a manner that the inlet side is low and the outlet side is slightly high, oil can be removed.

Then, the operation of the invention of claim 3 of the expandable and contractible curved spiral chip conveyor according to the present invention will be described. Since this is the same as the operation of the invention of claim 2 except for the following points, the entire description of the operation of the invention of claim 2 is incorporated herein, and the following description of the operation is added thereto. .. Then, since the control unit enables the drive source to be intermittently operated, the oil dripping is further promoted.

Further, the operation of the invention of claim 4 of the expandable and curlable combination spiral chip conveyor according to the present invention will be described. First of all, the spiral transfer part for chip transfer is
It is rotatably fitted to the lower part of the gutter-shaped conveyance groove by its own weight, and the rear end of the spiral conveyance part is separated from the rear end wall of the gutter-shaped conveyance groove, and the spiral conveyance part is When foreign matter is caught, it slides toward the rear end or moves upward. Then, a drive source such as an electric motor gives a rotational force to the above spiral transport unit. Furthermore, since the expansion / contraction flexible joint jointly connects the output side of the drive source and the spiral transfer section so that they can be expanded / contracted / bent, and indirectly as described below, the spiral transfer section can be used as a fulcrum here. Moves up, down, left, right, etc., and automatically removes chips, etc., clogged between the spiral transport section and the gutter-shaped transport groove. Finally, the chips are discharged from the discharge port provided at the lower rear end of the trough-shaped transport groove into the chip container placed below the discharge port.

However, since the spiral transfer section is indirectly connected to the drive source through the drive force transmission section provided between the drive source and the expandable / flexible joint, the spiral transfer section is connected to the spiral source. The rear end of the transport section is open. Therefore, the jam is loosened as it is transported, and the jam of the transport chip and foreign matter is easily removed.

Next, the operation of the invention of claim 5 of the expandable and contractible curving spiral chip conveyor according to the present invention will be described. Since this is the same as the operation of the invention of claim 4 except for the following points, the entire description of the operation of the invention of claim 4 is incorporated herein, and the following description of the operation is added thereto. .. Then, since the trough-shaped conveying groove is inclined in such a manner that the inlet side is low and the outlet side is slightly high, oil can be removed.

Further, the operation of the invention of claim 6 of the expandable and contractible curving spiral chip conveyor according to the present invention will be described. Since this is the same as the operation of the invention of claim 5 except for the following points, the entire description of the operation of the invention of claim 5 is incorporated herein, and the following description of the operation is added thereto. .. Then, since the control unit enables the drive source to be intermittently operated, the oil dripping is further promoted.

Finally, the action of the invention of claim 7 of the expandable and contractible curved spiral chip conveyor according to the present invention will be described. Since this is the same as the operation of the inventions of claims 1 to 6 except for the following points, the whole sentence of the description of the operation of the inventions of claims 1 to 6 is incorporated herein by reference, and the following configuration is adopted. To each of them. Since each trough-shaped conveying groove is provided with a group of oil outflow pores at the bottom near each tip, the oil discharged from the chip flows out from these pores.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following is a detailed description with reference to the accompanying drawings of an embodiment of the comprehensive invention of claims 1 to 3 of the expandable and contractible curving spiral chip conveyor according to the present invention. FIG. 1 is a partial cross-sectional view of the side surface. 2 is a plan view thereof, and FIG. 3 is a front view of that of FIG. FIG. 4 is a bottom view of that of FIG. FIG. 5 shows an enlarged cross-sectional view on the right side of FIG. FIG. 6 is an enlarged front view of a portion of the spring joint of FIG. Then, FIGS. 7 to 9 show partially enlarged side views of the spiral carrying portion, in which the chip is sandwiched and is removed.

First, there is a gutter-shaped conveying groove 10. Next is the spiral transport unit 20. This spiral transport unit 20
As shown in FIGS. 1, 5 and 7-9, is rotatably fitted to the bottom portion 11 of the trough-shaped conveying groove 10 by its own weight, and the tip of the shaft 21 of the spiral conveying portion 20 is. 22
(Left side in the drawing) is the tip wall 12 of the gutter-shaped transfer groove 10 described above.
It is provided in a state of being separated from (on the left side in the drawing). An inlet 13 for the chip 30 is provided at the upper end (on the left side in the drawing) of the trough-shaped transfer groove 10.

Then, there is an electric motor 40 which is a drive source. The electric motor 40 gives a rotational force to the spiral transfer section 20. Further, there is a spring joint 50 (see FIGS. 1, 6, 7 and 8). The spring joint 50 connects the output side of the electric motor 40 and the spiral transfer section 20 so as to extend and contract and bend freely. Finally, the above-mentioned gutter-shaped transport groove 10
The discharge port 14 of the chip 30 is provided at the bottom of the rear end of the
The chips 3 are put into the chip container (not shown) through the discharge port 14.
0 is released.

Further, the above-mentioned gutter-shaped conveying groove 10 is in a state in which the inlet 13 side is low and the outlet 14 side is slightly high. As a result, the oil on the chip 30 is removed.

Since the electric motor 40 can be operated intermittently by the control unit, it further promotes oil depletion.

The operation will be described above. First,
The spiral transport unit 20 rotatably fitted to the bottom portion 11 of the trough-shaped transport groove 10 by its own weight is the electric motor 4 described above.
Rotated by 0. There, the chip 30 is placed in the inlet 13.
Be thrown through. Therefore, the chip 30
It is carried in to the rear (right side in the drawing) of the trough-shaped conveying groove 10. Next, as shown in the enlarged partial front sectional view of the gutter-shaped conveying groove 10 and the spiral conveying portion 20 shown in FIG.
When 0 or a chip 30 enters and is caught between the spiral transfer section 20 and the gutter-shaped transfer groove 10, as shown in FIG. 8, the spiral transfer section 20 uses the spring joint 50 as a fulcrum. Moves upwards, etc. to easily ease the bite. Furthermore, the joint 50 made of spring is stretched by being pulled by the rotational force of the spiral transport unit 20. Then, the foreign matter 60 and the like easily come off as shown in FIG. In this way, the operation continues without stopping.

On the other hand, since the tip of the trough-shaped conveying groove 10 is inclined downward, the chips are sent toward the discharge port 13 thereof, but the oil is drained at that time. Then, by intermittently performing this operation by the control unit 70, the effect of oil draining is further enhanced.

Next, an expandable and curlable combination spiral chip conveyor according to the present invention, in which the inventions described in claims 4 to 7 are integrated, will be described in detail with reference to the accompanying drawings using an embodiment thereof. FIG. 10 shows a perspective view thereof. FIG. 11 is a plan view thereof, and FIG.
It is what showed the front view of No. 0. FIG. 13 shows FIG.
It is a bottom view of the thing of 0, and the spiral conveyance part is abbreviate | omitted in order to simplify a drawing. FIG. 14 shows
FIG. 11 is an enlarged cross-sectional view of the right side surface of FIG. 10.
FIG. 15 is a front cross-sectional view of the spiral transport unit and the vicinity of the gutter-shaped transport groove of FIG. The present invention is basically the same as that described in claims 1 to 3 above, and only the open end of the spiral conveying part is reversed. The following is a general description of that.

First, there is a gutter-shaped conveying groove 10. Next is the spiral transport unit 20. This spiral transport unit 20
10, which is rotatably fitted to the bottom portion 11 of the trough-shaped conveying groove 10 by its own weight as shown in FIGS. 10, 14 and 15, and the rear end 22 (right side in the drawing) of the spiral conveying portion 20. Is provided in a state of being separated from the rear end wall 12 (right side in the drawing) of the trough-shaped transport groove 10 (see FIGS. 11 and 15 to 18). Then, the above-mentioned gutter-shaped transport groove 1
Oil outflow pore group 1 at the bottom near the tip of 0 (left side in the drawing)
5 is provided. The oil outflow pore group 15 may be provided in the inventions according to claims 1 to 3 above.

Then, there is an electric motor 40 which is a drive source (see FIG. 12). The electric motor 40 includes a shaft 81 and a gear 82, which are provided between the electric motor 40, which is the driving source, and the elastic joint 50a, which is elastic and bendable, in the spiral transfer unit 20. Rotational force is applied through the portion 80. Further, a spring joint 50a (FIGS. 10 to 11 and 1)
5 to FIG. 18). This spring joint 50
a connects the distal end 83 of the driving force transmission portion 80, which is connected to the output side of the electric motor 40, and the spiral transfer portion 20 so as to extend and contract and bend freely. Finally, a discharge port 14 is provided at the bottom of the rear end of the gutter-shaped transport groove 10 described above, and the chip 30 is discharged from the discharge port 14 into a chip container (not shown).

Further, the trough-shaped conveying groove 10 is formed in a state in which the insertion portion 13a side is low and the discharge port 14 side is slightly high. As a result, the oil on the chip 30 is removed. In addition, the spiral transport unit 20 is
The drive source 40 and the elastically bendable joint 50a made of a spring are indirectly connected to each other through a drive force transmitting portion 80 provided between the drive source 40 and the elastic bendable joint 50a.

Since the electric motor 40 can be operated intermittently by the control section, it further promotes oil depletion.

The operation will be described above. First,
The spiral transport unit 20 rotatably fitted to the bottom portion 11 of the trough-shaped transport groove 10 by its own weight is the electric motor 4 described above.
Rotated by 0. There, the chip 30 is placed in the insertion part 13a.
Be thrown through. Therefore, the chip 30 is transported in the rear end direction (right side in the drawing) of the gutter-shaped transport groove 10. Next, as shown in the enlarged partial front sectional view of the portion of the gutter-shaped conveying groove 10 and the spiral conveying portion 20 shown in FIG. 16, the foreign matter 60 and the chip 30 enter the spiral conveying portion 20 and the gutter-shaped conveying groove 10. When biting in between, as shown in FIG. 17, the spiral transporting section 20 moves upward and leftward and rightward around the location of the spring joint 50a as a fulcrum, so that the biting is easily relieved. In particular, since the open end 22 of the spiral transfer unit 20 is near the discharge port 14 of the tip 30, the looseness increases as the tip is transferred, which is very good. Further, since the joint 50a made of spring is stretched by being pulled by the rotational force of the spiral conveying section 20, this also releases the clogging of chips and the like. Then, the foreign matter 60 and the like are easily removed as shown in FIG. In this way, the operation continues without stopping.

[0039]

EFFECTS OF THE INVENTION Because of the above-mentioned advantages, the expansion / contraction free-bonding spiral chip conveyor according to the present invention has the following great effects. That is, by using a spiral conveyor, it was possible to prevent oily chips from adhering to the conveyor unlike a belt conveyor. And by making the joint very simple called a spring, not only low cost but also
Even when a foreign object or the like bites into the spiral conveyor by using the expansion and contraction / bending, the biting can be easily removed automatically to prevent the operation from stopping. This has made it possible to fully automate the parts manufacturing machine.

In the inventions of claims 4 to 6, since the position of the joint is provided in the direction opposite to the discharge port of the chip, the sandwiched chip or the like becomes loose as it is carried to the discharge port side. , It became easier to come off. Furthermore, in the invention of claim 7, since the oil outflow pore group is provided, the oil debris is further improved.

[Brief description of drawings]

FIG. 1 is a partial side sectional view of an embodiment of an expandable bending joint spiral chip conveyor according to the present invention.

FIG. 2 shows a plan view of that of FIG.

FIG. 3 shows a front view of that of FIG.

FIG. 4 is a bottom view of that of FIG.

5 shows a right side enlarged cross-sectional view of the one in FIG. 1. FIG.

FIG. 6 is an enlarged front view of a portion of the spring joint shown in FIG. 1;

FIG. 7 is an enlarged partial front cross-sectional view of a portion of the gutter-shaped conveying groove and the spiral conveying portion, showing a state in which foreign matter and the like have entered.

FIG. 8 is an enlarged partial front cross-sectional view of a portion of the gutter-shaped conveying groove and the spiral conveying portion, showing a state in which foreign matter or the like has been bitten.

FIG. 9 is an enlarged partial front cross-sectional view of a portion of the gutter-shaped conveying groove and the spiral conveying portion, showing a state in which a threaded joint is extended to remove foreign matters and the like.

FIG. 10 shows a perspective view of another embodiment of the invention.

11 is a plan view of that of FIG.

FIG. 12 shows a front view of that of FIG.

FIG. 13 is a bottom view of that of FIG. 10, with its spiral transport section omitted to simplify the drawing.

FIG. 14 is an enlarged sectional view of the right side surface of FIG.

FIG. 15 is a front cross-sectional view of the vicinity of the spiral transport unit and the gutter-shaped transport groove of FIG.

FIG. 16 is an enlarged partial front cross-sectional view of the portion of the gutter-shaped conveyance groove and the spiral conveyance portion, showing a state in which foreign matter and the like have entered.

FIG. 17 is an enlarged partial front cross-sectional view of a portion of the gutter-shaped conveying groove and the spiral conveying portion, showing a state in which foreign matter or the like has bitten in.

FIG. 18 is an enlarged partial front cross-sectional view of the portion of the gutter-shaped conveying groove and the spiral conveying portion, showing a state in which the threaded joint is extended to remove foreign matters and the like.

[Explanation of symbols]

 10 Gutter-shaped Conveying Groove 11 Bottom 12 Tip Wall 13 Input Port 13a Input Port 14 Discharge Port 15 Oil Outflow Pore Group 20 Spiral Transfer Port 21 Shaft 30 Chip 40 Electric Motor 50, 50a Spring Joint 60 Foreign Material 70 Control Unit 80 Driving Force Transmission part 81 Shaft 82 Gear

Claims (7)

[Claims] 1. A trough-shaped transport groove, which is rotatably fitted to the bottom of the trough-shaped transport groove by its own weight, and a state in which the tip of the spiral transport section is separated from the tip wall of the trough-shaped transport groove. And a drive source such as a motor that gives a rotational force to the spiral transfer section, an expansion / contraction bendable joint that connects the output side of the drive source and the spiral transfer section in a flexible manner. The expansion and contraction curlable coupling spiral chip, which is configured by a tip insertion port provided at the upper end of the gutter-shaped conveyance groove and an ejection port provided at the rear end bottom part of the gutter-shaped conveyance groove. conveyor. 2. A gutter-shaped conveying groove having a lower inlet side and a slightly higher inclined outlet side, which is rotatably fitted to the bottom of the gutter-shaped conveying groove by its own weight, and the tip of the spiral conveying portion. Is a spiral conveyance section provided in a state of being separated from the tip wall of the gutter-shaped conveyance groove, a drive source that applies a rotational force to the spiral conveyance section, and an expansion / contraction of the output side of the drive source and the spiral conveyance section. It is composed of a telescopic bendable joint that is bendably connected, a chip input port provided at the upper end of the gutter-shaped transport groove, and a discharge port provided at the rear end bottom of the gutter-shaped transport groove. A spiral chip conveyor that can be freely extended and contracted. 3. A gutter-shaped conveying groove having a lower inlet side and a slightly higher inclined outlet side, which is rotatably fitted to the bottom of the gutter-shaped conveying groove by its own weight. A spiral transport unit provided in a state of being separated from the tip end wall of the trough-shaped transport groove, a drive source that applies a rotational force to the spiral transport unit, and an expansion / contraction of the output side of the drive source and the spiral transport unit. A flexible joint that can be freely connected, a tip input port provided at the upper end of the gutter-shaped transfer groove, a discharge port provided at the rear end bottom of the gutter-shaped transfer groove, and the drive source described above. Control unit that enables intermittent operation,
A spiral chip conveyor that can be freely bent and expanded. 4. A gutter-shaped conveying groove, which is rotatably fitted to the bottom of the gutter-shaped conveying groove by its own weight, and the rear end of the spiral conveying part is separated from the rear end wall of the gutter-shaped conveying groove. The spiral transport unit provided in a closed state, a drive source such as a motor that gives a rotational force to the spiral transport unit, the output side of the drive source and the spiral transport unit can be freely expanded and contracted, and indirectly as described below. An expandable and retractable joint spiral chip conveyor, comprising: an expandable and retractable joint that is connected to the above-mentioned; and an outlet provided at the bottom end of the rear end of the gutter-shaped conveying groove. Thus, the spiral transport unit is indirectly coupled to the drive source through the drive force transmission unit provided between the drive source and the expandable bending joint. 5. A trough-shaped conveying groove in which the inlet side is low and the outlet side is slightly high, and the trough-like conveying groove is rotatably fitted to the bottom of the trough-like conveying groove by its own weight and behind the spiral conveying section. The spiral conveying section provided with its end separated from the rear end wall of the gutter-shaped conveying groove, the drive source for applying a rotational force to the spiral conveying section, the output side of the drive source, and the spiral conveying section. An expandable and curlable joint characterized by being composed of an expandable and curlable joint that is expandable and curlable and indirectly connected as described below, and an outlet provided at the bottom end of the rear end of the gutter-shaped conveying groove. Spiral chip conveyor. Thus, the spiral transport unit is indirectly coupled to the drive source through the drive force transmission unit provided between the drive source and the expandable bending joint. 6. A gutter-shaped conveying groove having a lower inlet side and a slightly higher inclined outlet side, which is rotatably fitted to the bottom of the gutter-shaped conveying groove by its own weight, and after the spiral conveying portion. The spiral conveying section provided with its end separated from the rear end wall of the gutter-shaped conveying groove, the drive source for applying a rotational force to the spiral conveying section, the output side of the drive source, and the spiral conveying section. An expandable / flexible joint that is elastically / bentably and indirectly coupled as described below, a discharge port provided at the bottom end of the rear end of the gutter-shaped transport groove, and a control unit that enables intermittent operation of the drive source, A spiral chip conveyor that can be freely bent and expanded. Thus, the spiral transport unit is indirectly coupled to the drive source through the drive force transmission unit provided between the drive source and the expandable bending joint. 7. The gutter-shaped conveying groove is constituted by a group in which an oil outflow pore group is provided in the bottom near the tip thereof, and the gutter-shaped conveying groove is defined in claims 1, 2, 3, 4, 5, and 5. Alternatively, the expandable and contractible curved spiral chip conveyor according to item 6.