JP2002154030A - Cut material conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the wear of the inner surface of a tray to facilitate the maintenance of a cut material conveying device while preventing a failure and to convey and discard the cut material at a low cost by reducing frictional resistance in the rotation of a spiral conveyor or the like for conveying the cut material such as bar-shaped chips and spiral chips mixed together with fine cut material in liquid such as a coolant. SOLUTION: In this cut material conveying device, an inner tray is mounted into the tray so as to form a clearance between the surface of a groove and the surface of the inner tray and to form a clearance between the bottom face of the inner tray and the inner surface of the tray, and the outer peripheral surface of a spiral conveyor or the like is rotatably installed in proximity to the surface of a guide rail and the surface of the curved inner tray. One or both of the surface of the guide rail and the surface of the inner tray are subjected to electric discharge surface treatment, silicon carbide coating treatment, or the like to form cemented carbide alloy film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for separating a cutting material from a liquid containing a cutting material discharged from a cutting machine for metal or the like, for example, a machine such as a small lathe, and continuously using a spiral conveyor or a screw conveyor. The present invention relates to a device for transporting a cut object to be transported and discarded.

[0002]

2. Description of the Related Art In a cutting machine for metal and the like, particularly in a small lathe, there are many cases in which a cutting waste such as a fine chip or a chip and a cutting such as a bar-shaped chip or a spiral chip are mixed in a coolant waste liquid. When transporting these cuttings together with a spiral conveyor or the like, the cuttings such as fine chips and chips are clogged in the tray, and the cuttings such as bar-shaped chips and spiral chips bite into the spiral conveyor or the like. As a result, the rotation of the spiral conveyor or the like may stop, and the conveyance of the cut material may become impossible.

Conventionally, as a device for transporting cuttings in a liquid, for example, a coolant waste liquid, as shown in FIG. 1, an outer peripheral surface of a spiral conveyor 3 is rotatably installed close to an inner surface 2 of a curved tray 1. There is a type that transports the cuttings introduced into the tray 1 from the inflow section 4, but cuttings such as fine chips and chips are clogged between the inner surface 2 of the tray 1 and the spiral conveyor 3. As a result, there is a disadvantage that the rotation of the spiral conveyor 3 stops and the conveyance becomes impossible.

[0004] In view of this, in the applicant company, as a device for transporting the cuttings in the coolant waste liquid, as shown in FIGS. 2 and 3, the device extends in the longitudinal direction of the inner surface 2 (transport path) of the curved tray 1. One or more guide rails 5 are provided, and an outer peripheral surface of the spiral conveyor 3 is rotatably installed on the inner surface 2 of the tray 1 configured as described above in close proximity to the guide rails 5, so that a cut object, particularly fine chips or We develop, manufacture, and sell cutting device transporters that efficiently transport cuttings, such as chips, without clogging the cuttings and without abrading the transport path.

[0005] However, in the above-mentioned conventional machine for transporting cuttings, the efficiency of cutting is reduced without clogging the cuttings, especially cuttings such as fine chips and chips, and without abrading the inner surface 2 of the tray 1. Although there is an advantage that it can be conveyed and discarded, the spiral conveyer 3 can use such a method in the case where cuttings such as fine chips and chips are mixed with cuttings such as bar-shaped chips and spiral chips in the coolant waste liquid. When conveying the cuttings, cuttings such as rod-shaped chips and spiral chips are often caught and clogged between the inner surface 2 of the tray 1 and the guide rails 5 and between the spiral conveyor 3 and the guide rails 5. In some cases, the rotation of No. 3 stopped, and it became impossible to transport the cut material.

[0006] In particular, in a small lathe, since various kinds of metal and the like are cut, miscellaneous cuttings are often mixed in the waste liquid of the coolant. There is a high possibility that cuttings such as chips and spiral chips are mixed, and these miscellaneous cuttings are not clogged together in the tray 1 and the inner surface 2 of the tray 1 is not clogged.
It is an urgent technical problem to efficiently and inexpensively convey and dispose of the components without abrasion.

[0007]

DISCLOSURE OF THE INVENTION The present invention relates to a mixture of various cuttings in a liquid such as a coolant, particularly cuttings such as fine chips and chips, as well as cuttings such as rod-shaped chips and spiral chips. Prevents the cuttings from jamming or biting between the inner surface of the tray and the guide rail and between the inner surface of the tray and the spiral or screw conveyor, i.e., the rotation of the spiral or screw conveyor is restricted. It is an object of the present invention to prevent a cut object from being unable to be transported due to a stop, and to continuously and efficiently transport and discard the cut object.

[0008] Further, the present invention reduces the frictional resistance during rotation of a spiral conveyor or a screw conveyor that conveys a cutting, and prevents the inner surface of the tray from being worn.
An object of the present invention is to facilitate maintenance of a cutting object transport device, prevent a failure, and transport and discard a cutting object at low cost.

Further, the present invention relates to a method for separating various miscellaneous cuttings effectively and completely from a liquid such as a coolant waste liquid, and recovering and reusing a liquid such as a coolant from which the cuttings are separated. There is a purpose.

[0010]

SUMMARY OF THE INVENTION The present invention relates to an apparatus for transporting a cut object, wherein an upper portion of a curved tray is used as an inflow portion of a liquid containing the cut object, and a length L in the longitudinal direction of the inner surface of the tray.
A plurality of guide rails provided with a U-shaped groove are fixed at intervals, and the thickness of the board is thinner than the height of the groove, etc. at the mounting part such as the groove provided on the inner piece of the guide rail. A gap is formed between the surface of the mounting portion such as a groove and the surface of the inner tray by being fixed to the end of the inner tray, and a gap is formed between the bottom surface of the inner tray and the inner surface of the tray. As described above, the inner tray is mounted in the tray, and the outer surface of the spiral conveyor or the screw conveyor is rotatably installed close to the surface of the guide rail and the surface of the curved inner tray.

Further, according to the present invention, the thickness of the curved inner tray is set to 1 to 5 according to the size of the mounting portion such as the groove provided in the inner piece of the guide rail provided in the above-described machined device.
It is characterized in that it is thinner by mm.

Further, the present invention provides an ultra-hardness surface by subjecting one or both of the surface of the inner tray and the surface of the guide rail provided in the above-described machined device to a discharge surface treatment and a silicon carbide film treatment. It is characterized by forming an alloy film.

Further, according to the present invention, one or both of the inner tray and the guide rail provided in the above-mentioned machined material transfer device are provided with a soft ferrite phase and a hard martensite phase mainly containing 17% Cr-2% Ni. It is characterized by being manufactured from a high-strength multi-layer stainless steel having a fine mixed structure.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A machine for transporting cuttings according to the present invention is used for removing coolant waste containing cuttings such as bar-shaped chips and spiral chips together with cuttings such as fine chips and chips discharged from a small lathe. As an example, referring to FIG. 4, a plurality of guide rails 5 are fixed at intervals in the longitudinal direction of the inner side surface 2 in the curved tray 1, and the entire upper part of the tray 1 is cut with a cut object. The inflow part 4 of the coolant waste liquid containing the waste liquid. In addition, the inflow part 4 of the coolant waste liquid may be a part of the upper part of the tray 1, and the other part of the upper part of the tray 1 may be covered so as to be closed.

As shown in FIG. 5, a groove 7 is provided in the inner side portion of the guide rail 5, and the groove 7 of the guide rail 5 has an end of a curved inner tray 6 having a thickness smaller than the size of the groove 7. At this time, the inner tray 6 is attached so that the bottom surface of the inner tray 6 contacts the bottom surface of the tray 1.

The spiral conveyor 3 is rotatably installed in the curved tray 1. The outer peripheral surface of the spiral conveyor 3 is positioned close to the surface of the guide rail 5 fixed to the inner surface 2 in the curved tray 1. It is installed and installed close to the surface of the curved inner tray 6.

The spiral conveyor 3 is formed by winding a metal wire such as a stainless steel wire in a spiral shape, that is, a coil spring shape, and hollowing a central portion thereof. One end of the spiral conveyor 3 is connected to a motor 8. The spiral conveyor 3 is integrally fixed to the rotating cylinder 9 by means such as welding so that the spiral conveyor 3 is rotatable in the curved tray 1.

Next, the operation of conveying and discarding the cut material by the cut material conveying apparatus of the present invention will be described with reference to FIG. 4. First, rod-shaped chips and fine chips and chips, etc. discharged from a small lathe are cut. The coolant waste liquid, in which cuttings such as chips and spiral chips are mixed, flows into the tray 1 from the inflow section 4 provided at the upper part of the tray 1 and at the same time, the motor 8
Thus, the spiral conveyor 3 loaded in the tray 1 is rotated.

The rotating spiral conveyor 3 removes cuttings such as fine chips and chips precipitated on the bottom surface of the tray 1 as well as cuttings such as bar-shaped chips and spiral chips along the inner surface 2 of the tray 1 and the guide rail 5. Between the spiral conveyor 3 and the guide rail 5 without being clogged, that is, without stopping rotation of the spiral conveyor 3, and conveyed along the tray 1 so as to be sent out toward the right end of the tray 1; It is transported so as to be pushed into the lower end of the rising discharge pipe 10.

In other words, since the outer peripheral surface of the spiral conveyor 3 is installed close to the surface of the guide rail 5 fixed to the inner surface 2 of the tray 1 and also close to the surface of the inner tray 6, The cutting discharge such as a bar-shaped chip or a helical chip is not caught between the guide rail 5 and the spiral conveyor 3 of the tray 1 together with the cuttings such as the fine chips and chips, and the rising and discharging pipe is rotated by the rotation of the spiral conveyor 3. 10 to the lower end.

Since the thickness of the inner tray 6 fixed in the groove 7 of the guide rail 5 is smaller than the height of the guide rail 5, as shown in FIG. 5, the outer peripheral surface of the spiral conveyor 3 and the surface of the inner tray 6 are formed. A gap 11 is formed in the space, and the cuttings such as fine chips and chips are turned through the gap 11 by the rotation of the spiral conveyor 3 and the rising discharge pipe 10 is formed.
To the lower end of the box.

Next, the above-mentioned cuts pushed into the rise discharge pipe 10 are conveyed to the upper end of the rise discharge pipe 10 so as to be pushed up by the cuts sequentially pushed by the spiral conveyor 3 of the tray 1, It is dropped to the outside from the upper end of the rise discharge pipe 10 and is discarded in the waste tank 13.

The spiral conveyor 3 may be formed by winding a stainless steel metal wire in a spiral shape (coil spring shape), a high speed steel wire or a carbon steel wire in a spiral shape, or by abrasion resistance. And sliding properties (spiral conveyor 3
In order to further increase the wear resistance and slidability, stainless steel, high speed steel, or carbon steel metal wire that has been subjected to nitriding or sub-zero hardening treatment is spirally wound. A stainless steel wire, a high-speed steel or a carbon steel with a super-hard alloy film formed on the surface of the steel, for example, what is referred to as electric discharge surface treatment. And an electrode made of tungsten carbide cobalt or titanium carbide (hereinafter referred to as an electrode) is brought close to the stainless steel wire, and a predetermined voltage is applied to the stainless steel wire and the electrode. A super-hard (about 2000 HV) alloy film (1 to 1) is formed on the stainless steel wire by generating a discharge during
(3/100 mm).

With respect to the formation of a super-hard alloy film on the surface of a stainless steel wire, in addition to the above-described discharge surface treatment, a silicon carbide film (plating) treatment is carried out to form a super-hard (about 2,000 degree HV) alloy film (1 to 2). 3/100 mm), and in place of the spiral conveyor 3,
A stainless steel, high speed steel, carbon steel spiral conveyor (not shown) made of stainless steel or a sub-zero hardened treatment, or a stainless steel spiral conveyor coated with a superhard alloy film may be used.

The spiral conveyor 3 uses the rotating force as a conveying force of the cutting material, and conveys the cutting material flowing into the tray 1 so as to be sent out by the rotation of the spiral conveyor 3. The cross section should be a quadrangle, but besides this, if it is a semicircle, a triangle, or any other shape that is easy to convey a cutting object,
Any shape may be used.

The diameter of the spiral conveyor 3 is made slightly smaller than the curved radius R of the inner tray 6, and the length of the spiral conveyor 3 is appropriately determined according to the processing conditions such as the type of cut material and the amount of conveyance. Usually, the spiral conveyor 3 should have a diameter of 5 to 50 cm and a length of 30 to 5000 cm, and the spiral conveyor 3 should have a rotation speed of 5 to 150 cm.
It may be about rpm.

The guide rail 5 may be an elongated plate or a round bar made of stainless steel, high-speed steel, carbon steel or the like.
Abrasion resistance and sliding properties (for spiral conveyor 3)
In order to increase the thickness, a long plate or round bar made of stainless steel or the like is subjected to a nitriding treatment, or a long plate or round bar made of stainless steel or the like having a superhard alloy film formed on the surface thereof, for example, as described above. A superhard alloy film formed by performing a discharge surface treatment or a superhard alloy film formed by performing a silicon carbide film (plating) process may be used.

Further, in order to further improve the wear resistance and slidability of the guide rail 5, as a material of the guide rail 5, a soft ferrite phase containing 17% Cr-2% Ni as a main component and a hard ferrite phase are used. It is most desirable to use a high-strength, multi-layer stainless steel having a martensite phase and a fine mixed structure, but any other material that has high wear resistance and high slidability is used. It does not matter.

The length, width (diameter), and height (diameter) of the guide rail 5 are appropriately determined according to conditions such as the length of the tray 1, the type of cut material, the amount of conveyance, and the like. The height is in the range of 30 to 5000 cm and the height (diameter) is 2
It is preferable to use a material having a range of 10 to 10 mm and a width (diameter) of 2 to 20 mm.

Usually, two guide rails 5 are provided, but in some cases, three or four guide rails 5 may be provided.
The length may be in the range of 30 to 5000 cm, and the height may be 2 to 8 mm.
And a width of 2 to 18 mm may be used.

Although the shape of the curved inner tray 6 is curved, the curved R is slightly smaller than the curved R of the tray 1 and guides the thickness of the curved inner tray 6. A gap 11 is formed between the surface of the groove 7 and the surface of the inner tray 6 by making the thickness of the groove 5 of the rail 5 1 to 5 mm thinner and fixing the end of the inner tray 6 to The inner tray 6 is mounted in the tray 1 so as to form a gap 11 between the bottom surface of the inner tray 6 and the inner surface 2 of the tray 1.

As the material of the inner tray 6, a long plate such as stainless steel, high-speed steel, or carbon steel may be used. However, in order to improve abrasion resistance and slidability (with respect to the spiral conveyor 3). Are those obtained by nitriding the surface of a long plate of stainless steel, those having a superhard alloy film formed on the surface of a long plate of stainless steel, or those of a long plate or round bar made of stainless steel or the like. An alloy film formed, for example, a superhard alloy film formed by the above-described discharge surface treatment or a silicon carbide film (plated) formed by forming a superhard alloy film is used. You may.

Further, the abrasion resistance of the inner tray 6,
In order to further improve the slidability, as a material of the inner tray 6, a high-strength multi-layer stainless steel having a fine mixed structure of a soft ferrite phase, a hard martensite phase and a fine ferrite phase containing 17% Cr-2% Ni as a main component. It is most desirable to use steel.

That is, the thickness of the curved inner tray 6 is 0.5 to 5 mm, and the height of the guide rail 5 is 2 to 5 mm.
10 mm, the height of the groove 7 is 2 to 8 mm, a gap 11 of 0.5 to 7 mm between the surface of the groove 7 and the surface of the inner tray 6, and the gap 11 between the bottom surface of the inner tray 6 and the inner surface 2 of the tray 1. A gap 11 of 0.5 to 7 mm is formed.

In order to fix the end of the inner tray 6, an L-shaped groove 7 is provided on the inner side of the guide rail 5, but a slit (not shown) other than the L-shaped groove 7 is provided. A mounting portion such as a mounting hole may be provided.

The lower end of the rising and discharging pipe 10 is connected to the end of the tray 1 in the conveying direction, that is, the end of the cutting material in the conveying direction. In this manner, the cuttings pushed out from the end of the tray 1 by the spiral conveyor 3 are conveyed upward in the rising discharge pipe 10. , The spiral conveyor 3 in the rising discharge pipe 109.
Is not inserted, and the cut material in the rise discharge pipe 10 is transported while being pushed up by the cut material sent in by the spiral conveyor 3, and may be discarded outside.

The rising discharge pipe 10 may have a reverse tapered cross section, that is, a tapered structure.
By adopting such a structure, the frictional resistance of the cuttings conveyed in the rising discharge pipe 10 is reduced, and the load on the motor 8 of the spiral conveyor 3 when the cuttings are conveyed is reduced. May be facilitated, and clogging of the start-up discharge pipe 10 by a cut object may be prevented.

The taper angle of the rising discharge pipe 10 depends on the processing conditions such as the type of the cut material and the amount of conveyance, and the spiral conveyor 3.
The diameter, the length, the pitch and the number of revolutions are appropriately determined according to the conditions for generating the force for pumping the cut material, but in a normal case, a reverse tapered rising discharge pipe connected to the cut material described above. When the taper angle of 10 is set to 0.15 to 10 degrees, the frictional resistance at the time of transporting the cutting can be reduced, and
It is desirable that the load on the motor 8 of the spiral conveyor 3 can be reduced when the cut material is conveyed, and it is most preferable that the load be set to 2 to 4 degrees.

Since the auxiliary conveyor 12 is provided on the outer peripheral surface of the spiral conveyor 3, the spiral conveyor 3 may be lifted. Therefore, the spiral guide 3 is pressed by the auxiliary guide 12 to prevent the spiral conveyor 3 from being lifted up. By keeping the rotating state of the fixed position, it is possible to prevent cuttings such as fine chips and chips from remaining at the bottom of the tray 1 and to remove rod-like chips and spirals in the gaps generated by the lifting of the spiral conveyor 3. It may be possible to prevent a cutting such as a chip from being clogged.

[0040]

According to the present invention, cuttings such as miscellaneous chips and chips in a liquid such as a coolant, in particular, cuttings such as bar-shaped chips and spiral chips as well as cuttings such as fine chips and chips. Even if mixed, the rotation of the spiral conveyor or screw conveyor is continued to prevent cutting and jamming between the inner surface of the tray and the guide rail and between the inner surface of the tray and the spiral conveyor or the screw conveyor so that they are not jammed. It is possible to transport and discard objects continuously with high transport efficiency.

Further, according to the present invention, the frictional resistance at the time of rotation of the spiral conveyor or the screw conveyor for conveying the cuttings can be reduced, so that the load of the motor which is the driving force can be reduced and the cuttings can be smoothly transferred. It is possible to reduce the cost of maintenance work for transporting cuttings, and furthermore, because it does not wear the inner surface of the tray, there is an advantage that it can be operated continuously for a long time without causing failure of the transporting device for cuttings, In particular, the use of a stainless steel guide rail with a super-hard alloy film formed on the surface has the merit of dramatically reducing the cost of maintenance for transporting cuttings, and the ability to operate the workpiece transporting equipment for a longer period of time. is there.

Further, according to the present invention, it is possible to effectively and completely separate the cut material from the liquid such as the coolant waste liquid, and to collect and reuse the liquid such as the coolant from which the cut material is separated. There is also the advantage that there is.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view of a conventional cutting object conveying device provided with a spiral conveyor.

FIG. 2 is a cross-sectional explanatory view of a conventional machined material transfer device provided with a spiral conveyor by fixing a guide rail to a tray.

FIG. 3 is an explanatory sectional view taken along line AA of FIG. 2;

FIG. 4 is a cross-sectional explanatory view of a cutting object conveying device of the present invention provided with a spiral conveyor having an inner tray attached to a guide rail fixed to a tray.

FIG. 5 is an enlarged explanatory view of the machined material transfer device of the present invention, showing a state where the inner tray is attached to a guide rail fixed to the tray.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tray 2 Inner surface 3 Spiral conveyor 4 Inflow part 5 Guide rail 6 Inner tray 7 Groove 8 Motor 9 Rotating cylinder 10 Rise discharge pipe 11 Gap 12 Waste tank 13 Auxiliary guide

Claims (4)

[Claims] An upper portion of a curved tray is used as an inflow portion of a liquid containing cuttings such as chips and chips, and a plurality of guide rails provided with an L-shaped groove in a longitudinal direction of an inner surface of the tray are used. By fixing at intervals and fixing to the mounting part such as the groove provided in the inner piece part of the guide rail, to the end of the curved inner tray with a plate thickness thinner than the height of the mounting part such as the groove, Attach the inner tray to the tray so that a gap is formed between the surface of the mounting portion such as the groove and the surface of the inner tray, and a gap is formed between the bottom surface of the inner tray and the inner surface of the tray. A machine for transporting cuttings, in which the outer surface of a spiral conveyor or a screw conveyor is rotatably installed close to the surface of the inner tray and the surface of the curved inner tray. 2. The inner tray has a thickness of 1 to 5 mm depending on the size of a mounting portion such as a groove provided in an inner side portion of the guide rail.
The transporting device for a cut object according to claim 1, wherein the device is thinned. 3. The super-hard alloy film according to claim 1, wherein one or both of the surface of the guide rail and the surface of the inner tray are subjected to a discharge surface treatment, a silicon carbide film treatment or the like. Conveyance device for cuttings. 4. One or both of the guide rail and the inner tray are made of a high-strength, multi-layer stainless steel having a fine mixed structure of a soft ferrite phase, a hard martensite phase and a fine mixed structure mainly containing 17% Cr-2% Ni. 3. The device for conveying a cut product according to claim 1, wherein the device is manufactured.