JP4672129B2 - Cut material transfer device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention separates a cut material from a liquid containing a cut material discharged from a cutting machine such as a metal, for example, a machine such as a small lathe, and continuously conveys and discards the cut material using a spiral conveyor or a screw conveyor. The present invention relates to a workpiece conveying device.
[0002]
[Prior art]
In cutting machines such as metal, especially small lathes, cuttings such as fine chips and chips are often mixed in the coolant waste liquid with cuttings such as rod-shaped chips and spiral chips. When transporting together with a spiral conveyor, etc., the tray is clogged with fine cuttings and chips, and the cuttings such as rod-shaped chips and spiral chips are caught in the spiral conveyor and the like. In some cases, the rotation stopped and conveyance of the cut material was impossible.
[0003]
Conventionally, as a device for transporting a cut material in a liquid, for example, a coolant waste liquid, as shown in FIG. 1, an outer peripheral surface of a spiral conveyor 3 is installed close to an inner surface 2 of a curved tray 1 so as to be rotatable. Although there is what conveys the cut material introduced into the tray 1 from the portion 4, the spiral conveyor is clogged with fine cuts, chips, or other cut material between the inner surface 2 of the tray 1 and the spiral conveyor 3. There was a drawback in that the rotation of No. 3 stopped and the conveyance became impossible.
[0004]
Therefore, in the applicant company, as shown in FIGS. 2 and 3, one or more of the cutting devices in the coolant waste liquid that extend in the longitudinal direction of the inner surface 2 (conveying path) of the curved tray 1 are used. The guide rail 5 is provided on the inner surface 2 of the tray 1 configured as described above, and the outer peripheral surface of the spiral conveyor 3 is rotatably installed in the vicinity of the guide rail 5 so as to cut a cut product, particularly fine chips and chips. Has developed, manufactured and sold a cutting device conveying device that efficiently conveys the material without clogging the cut material and without damaging the conveying path.
[0005]
However, the above-described conventional cut object conveying apparatus efficiently conveys the cut object, in particular, without clogging the cut object such as fine chips and chips and without wearing the inner surface 2 of the tray 1. Although there is an advantage that it can be discarded, if the cuttings such as fine chips and chips and the cuttings such as rod-shaped chips and spiral chips are mixed in the coolant waste liquid, the spiral conveyor 3 can remove these cuttings. When transporting, the cutting material such as rod-shaped chips and spiral chips is often jammed between the inner surface 2 of the tray 1 and the guide rail 5 and between the spiral conveyor 3 and the guide rail 5, and the spiral conveyor 3 rotates. Sometimes stopped, making it impossible to transport the cut material.
[0006]
In particular, in a small lathe, various cuttings are often mixed in the coolant waste liquid for cutting various metals, and rod-like chips and spirals together with cuttings such as fine chips and chips. There is a high possibility that cuttings such as chip-like chips will be mixed, and these various kinds of cuttings will not be clogged together in the tray 1 and the inner surface 2 of the tray 1 will not be worn out. It is an urgent technical problem to transport, dispose of the product cheaply.
[0007]
[Problems to be solved by the invention]
The present invention relates to the inner surface of the tray when various miscellaneous cuts in a liquid such as coolant, especially cuts such as fine chips and chips, as well as cuts such as rod-shaped chips and spiral chips, are mixed. These cuts are prevented from clogging or biting between the inner surface of the guide rail and tray and the spiral conveyor or screw conveyor, that is, the spiral conveyor or screw conveyor stops rotating and the cut article cannot be conveyed. Therefore, the object is to efficiently convey the cut material continuously and discard it.
[0008]
In addition, the present invention reduces frictional resistance during rotation of the spiral conveyor or screw conveyor that conveys the cut material, prevents wear on the inner surface of the tray, facilitates maintenance of the cut material conveying device, and prevents failure. The purpose is to prevent, and transport and discard the cut material at a low cost.
[0009]
Another object of the present invention is to effectively and completely separate various miscellaneous cut objects from liquid such as coolant waste liquid, and to recover and reuse the liquid such as coolant from which the cut article is separated. .
[0010]
[Means for Solving the Problems]
The present invention relates to an apparatus for conveying a cut object, and a plurality of guide rails in which an upper part of a curved tray is an inflow part of a liquid containing a cut object and an L-shaped groove is provided in the longitudinal direction of the inner surface of the tray. Fix the book at intervals, and fix it to the end of the curved inner tray that is thinner than the height of the mounting part such as the groove, to the mounting part such as the groove provided on the inner piece of the guide rail. By attaching the inner tray in the tray so as to form a gap between the surface of the mounting portion such as a groove and the surface of the inner tray, and to form a gap between the bottom surface of the inner tray and the inner surface of the tray, It is characterized in that the outer peripheral surface of the spiral conveyor or screw conveyor is installed in a rotatable manner on the surface of the guide rail and the curved inner tray.
[0011]
Further, the present invention is characterized in that the plate thickness of the curved inner tray is made 1 to 5 mm thinner than the size of the mounting portion such as the groove provided in the inner piece of the guide rail provided in the above-described cut material conveying apparatus. There is.
[0012]
Furthermore, the present invention provides a superhard alloy film by performing discharge surface treatment, silicon carbide film treatment or the like on one or both of the surface of the inner tray and the surface of the guide rail provided in the above-described cut material transporting device. It is characterized by forming.
[0013]
Further, according to the present invention, one or both of an inner tray and a guide rail provided in the above-described cut material conveying apparatus is finely mixed with a soft ferrite phase and a hard martensite phase mainly composed of 17% Cr-2% Ni. It is characterized by being made of high-strength, multi-layered stainless steel having a structure.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
According to FIG. 4, an example of a coolant waste liquid in which a cutting object such as a rod-shaped chip and a spiral chip is mixed together with a cutting object such as fine chips and chips discharged from a small lathe is used as the workpiece conveying device of the present invention. More specifically, 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 surface of the tray 1 is infused with coolant waste fluid containing cuttings. 4. The coolant waste liquid inflow portion 4 may be a partial surface of the upper portion of the tray 1 and may be configured in a closed state by covering the other partial surface of the upper portion of the tray 1.
[0015]
As shown in FIG. 5, a groove 7 is provided in an inner piece of the guide rail 5, and the groove 7 of the guide rail 5 is fixed to the end of the curved inner tray 6 having a thickness smaller than the size of the groove 7. However, in this case, the bottom surface of the inner tray 6 is attached so as to contact the bottom surface in the tray 1.
[0016]
The spiral conveyor 3 is rotatably installed in the curved tray 1, and 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 curved tray 1. It is installed close to the surface of the curved inner tray 6.
[0017]
The spiral conveyor 3 is made of a metal wire such as a stainless steel wire wound in a spiral shape, that is, in the shape of a coil spring, and the central portion thereof is hollowed. A rotating cylinder 9 having one end of the spiral conveyor 3 connected to a motor 8 is provided. The spiral conveyor 3 is configured so as to be rotatable within the curved tray 1 by being integrally fixed thereto by means such as welding.
[0018]
Next, the operation of conveying and discarding the cut object by the cut object conveying device of the present invention will be described with reference to FIG. 4. First, the rod-shaped chip and the spiral shape together with the cut object such as fine chips and chips discharged from the small lathe. Coolant waste liquid in which cuttings such as chips are mixed flows into the tray 1 from the inflow portion 4 provided at the top of the tray 1, and at the same time, the spiral conveyor 3 loaded in the tray 1 is rotated by the motor 8.
[0019]
The rotating spiral conveyor 3 causes the cut material such as fine chips and chips deposited on the bottom surface of the tray 1 to be cut between the inner surface 2 of the tray 1 and the guide rail 5 and the spiral. It is conveyed between the conveyor 3 and the guide rail 5 so as to be sent out in the direction of the right end of the tray 1 along the tray 1 without clogging between the conveyor 3 and the guide rail 5, that is, without stopping the rotation of the spiral conveyor 3. It is conveyed so as to be pushed into the lower end of the tube 10.
[0020]
In other words, since the outer peripheral surface of the spiral conveyor 3 is located 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 lower end of the rising discharge pipe 10 is rotated by the rotation of the spiral conveyor 3 without biting between the guide rail 5 of the tray 1 and the spiral conveyor 3 along with the cutting object such as chips and the like. Carry to.
[0021]
Further, since the thickness of the inner tray 6 fixed in the groove 7 of the guide rail 5 is thinner than the height of the guide rail 5, a gap 11 is formed between the outer peripheral surface of the spiral conveyor 3 and the surface of the inner tray 6 as shown in FIG. The cut material such as fine chips and chips is conveyed to the lower end of the rising discharge pipe 10 through the gap 11 by the rotation of the spiral conveyor 3.
[0022]
Next, the above-mentioned cut object pushed into the rising discharge pipe 10 is conveyed to the upper end of the rising discharge pipe 10 so as to be pushed up by the cut objects pushed in one after another by the spiral conveyor 3 of the tray 1 and discharged. It is dropped outside from the upper end of the tube 10 and discarded in the waste tank 13.
[0023]
The spiral conveyor 3 is made of a stainless steel metal wire wound in a spiral shape (coil spring shape), but is also wound in a high speed steel wire or a carbon steel wire spiral shape. In order to improve the mobility (with respect to the spiral conveyor 3), a metal wire of stainless steel, high-speed steel or carbon steel that has been subjected to nitriding treatment or sub-zero hardening treatment is spirally wound. In order to further improve the mobility, what is called a super hard alloy film on the surface of stainless steel wire, high speed steel and carbon steel, for example, what is called discharge surface treatment, stainless steel wire as an example, This is placed in an oil liquid in an electric discharge machining tank, 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, A predetermined voltage is applied to the electrode, electric discharge is generated between the stainless steel wire and the electrode, and an electric discharge machining is performed on the stainless steel wire, whereby an ultra-hard (about HV2000 degree) alloy film (1 It is good to use what coat | covered ~ 3 / 100mm).
[0024]
For forming a superhard alloy film on the surface of the stainless steel wire, in addition to the discharge surface treatment described above, a silicon carbide film (plating) treatment is performed to obtain a superhard (about HV2000 degree) alloy film (1 to 3/100 mm). In addition, instead of the spiral conveyor 3, a stainless steel, sub-zero hardened stainless steel, high speed steel or carbon steel spiral conveyor (not shown) or a stainless steel spiral The conveyor may be used after being coated with a superhard alloy film.
[0025]
The spiral conveyor 3 uses the rotational force as the conveying force of the cut material, and conveys the cut material flowing into the tray 1 so as to be sent out by the rotation of the spiral conveyor 3, and the spiral conveyor 3 has a rectangular cross section. However, any other shape may be used as long as it is a semicircular shape, a triangular shape, or any other shape that can easily convey a cut object.
[0026]
The diameter of the spiral conveyor 3 is slightly smaller than the curved 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 the cut material and the conveyance amount. In this case, the spiral conveyor 3 may have a diameter of 5 to 50 cm and a length of 30 to 5000 cm, and the rotational speed of the spiral conveyor 3 may be about 5 to 150 rpm.
[0027]
The guide rail 5 may be an elongated plate or round bar made of stainless steel, high speed steel, carbon steel or the like, but in order to improve wear resistance and slidability (with respect to the spiral conveyor 3), stainless steel is used. The surface of an elongated plate or round bar such as nitriding, or the surface of an elongated plate or round bar made of stainless steel or the like, and a superhard alloy film formed on the surface of the elongated plate or round bar, such as the above-mentioned discharge surface treatment, An alloy film may be formed, or a silicon carbide film (plating) treatment may be performed to form a superhard alloy film.
[0028]
Furthermore, 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 and a hard martensite phase mainly composed of 17% Cr-2% Ni are used. It is most desirable to use a high-strength, multi-layered stainless steel with a fine mixed structure, but any other material that has high wear resistance and slidability can be used. It doesn't matter.
[0029]
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, and the conveyance amount. In normal cases, the length is A range of 30 to 5000 cm, a height (diameter) of 2 to 10 mm, and a width (diameter) of 2 to 20 mm may be used.
[0030]
As the number of guide rails 5, it is normal to provide two, but depending on the case, three or four may be used, and the interval between the guide rails 5 may be in the range of 2 to 20 cm. The L-shaped groove 7 provided in the inner piece of the guide rail 5 is usually one having a length in the range of 30 to 5000 cm, a height in the range of 2 to 8 mm, and a width in the range of 2 to 18 mm. Use it.
[0031]
The curved inner tray 6 is curved, but the curved R is slightly smaller than the curved R of the tray 1, and the thickness of the curved inner tray 6 is set to the guide rail 5. A gap 11 is formed between the surface of the groove 7 and the surface of the inner tray 6 by fixing the end of the inner tray 6 to 1-5 mm thinner than the height of the groove 7, and the inner tray 6. The inner tray 6 is mounted in the tray 1 so as to form a gap 11 between the bottom surface of the tray 1 and the inner surface 2 of the tray 1.
[0032]
The inner tray 6 may be made of a long plate such as stainless steel, high speed steel, carbon steel, etc. In order to improve wear resistance and slidability (relative to the spiral conveyor 3), stainless steel is used. Nitrating the surface of a long steel plate, or forming a superhard alloy film on the surface of a stainless steel long plate, or applying a superhard alloy film on the surface of an elongated plate such as stainless steel or a round bar For example, a super hard alloy film formed by performing the above-described discharge surface treatment or a super hard alloy film formed by performing a silicon carbide film (plating) treatment may be used. .
[0033]
Furthermore, in order to further improve the wear resistance and slidability of the inner tray 6, the material of the inner tray 6 is composed of a soft ferrite phase and a hard martensite phase mainly composed of 17% Cr-2% Ni. It is most desirable to use a high-strength multilayer steel with a fine mixed structure.
[0034]
That is, the plate thickness of the curved inner tray 6 is 0.5 to 5 mm, the height of the guide rail 5 is 2 to 10 mm, the height of the groove 7 is 2 to 8 mm, and the surface of the groove 7 and the inner tray 6 A gap 11 of 0.5 to 7 mm is formed between the surface and a gap 11 of 0.5 to 7 mm is formed between the bottom surface of the inner tray 6 and the inner surface 2 of the tray 1.
[0035]
In order to fix the end of the inner tray 6 to the inner rail 6, an L-shaped groove 7 is provided in the inner piece of the guide rail 5. In addition to the L-shaped groove 7, a slit (not shown) and other mounting holes are provided. It is also possible to provide a mounting portion such as.
[0036]
The lower end of the rising discharge pipe 10 is connected to the end of the tray 1 in the transfer direction, that is, the end of the cut material in the transfer direction. The rising discharge pipe 10 is connected to the tray 1 installed in a horizontal state. It is preferable to install it at an angle of 30 to 80 degrees. By doing so, the cut material pushed out from the end of the tray 1 by the spiral conveyor 3 is conveyed in an upward state in the rising discharge pipe 10, and In the discharge pipe 109, the spiral conveyor 3 is not inserted, and the cut material in the rising discharge pipe 10 is conveyed while being pushed up by the cut material fed by the spiral conveyor 3, and may be discarded to the outside. .
[0037]
Further, the rising discharge pipe 10 may have a cross-sectionally inverted taper shape, that is, a tapered structure, and by such a structure, the friction of the cut material conveyed in the rising discharge pipe 10 is obtained. Reduces the resistance and reduces the load on the motor 8 of the spiral conveyor 3 when the cut material is conveyed, facilitates the conveyance of the cut material, and prevents clogging of the rising discharge pipe 10 due to the cut material. May be.
[0038]
The taper angle of the rising discharge pipe 10 depends on the processing conditions such as the type of the cut object, the conveyance amount, and the conditions that generate the force for pumping the cut object such as the diameter, length, pitch, and rotation speed of the spiral conveyor 3. In the normal case, if the taper angle of the inverted tapered rising discharge pipe 10 connected to the cut object is 0.15 to 10 degrees, the frictional resistance when the cut object is conveyed is reduced. This is desirable from the viewpoint of reducing the load on the motor 8 of the spiral conveyor 3 when the workpiece is conveyed, and most preferably 2 to 4 degrees.
[0039]
The auxiliary guide 12 is provided on the outer peripheral surface of the spiral conveyor 3 because the spiral conveyor 3 may be lifted. Therefore, the auxiliary guide 12 pushes the spiral conveyor 3 to prevent the spiral conveyor 3 from being lifted, and the spiral conveyor 3 is rotated. Is maintained at a fixed position to prevent the cuttings such as fine chips and chips from remaining on the bottom of the tray 1, and rod-shaped chips and spiral chips etc. in the gap generated when the spiral conveyor 3 is lifted. This may prevent clogging of the cut material.
[0040]
【The invention's effect】
According to the present invention, cuttings such as miscellaneous chips and chips in a liquid such as coolant, especially cuttings such as rod-shaped chips and spiral chips together with cuttings such as fine chips and chips are mixed. In order to prevent clogging and clogging between the inner surface of the tray and the guide rail and the inner surface of the tray and the spiral conveyor or screw conveyor, the rotation of the spiral conveyor or screw conveyor is continued to continuously cut the cut material. It can be transported efficiently and discarded.
[0041]
In addition, according to the present invention, since the frictional resistance at the time of rotation of the spiral conveyor or screw conveyor that conveys the cut object can be reduced, the load of the motor as the driving force can be reduced, the cut object can be smoothly conveyed, and the cutting can be performed. It is possible to reduce the cost of maintenance of material transport, and further, since the inner surface of the tray is not worn, there is an advantage that it can be continuously operated over a long period of time without damaging the cutting material transport device. Use of a steel guide rail with a super-hard alloy film formed thereon has a merit that the workpiece maintenance maintenance is dramatically cheaper and the workpiece conveyor can be operated for a longer period of time.
[0042]
Furthermore, according to the present invention, it is possible to effectively completely separate the cut material from the liquid such as the coolant waste liquid, and to recover and reuse the liquid such as the coolant from which the cut material is separated. There is also.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a cross-sectional explanatory view of a conventional cut object conveying apparatus provided with a spiral conveyor.
FIG. 2 is a cross-sectional explanatory view of a conventional cut object conveying apparatus in which a guide rail is fixed to a tray and a spiral conveyor is provided.
FIG. 3 is a cross-sectional explanatory view taken along line AA in FIG. 2;
FIG. 4 is a cross-sectional explanatory view of the cut material conveying apparatus of the present invention in which a spiral conveyor having an inner tray attached to a guide rail fixed to the tray is provided.
FIG. 5 is an enlarged explanatory view of the cut material conveying apparatus of the present invention showing a state in which the inner tray is attached to the 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 Vertical discharge pipe 11 Gap 12 Waste tank 13 Auxiliary guide

Claims (4)

The upper part of the curved tray is used as an inflow part for liquid containing cuttings such as chips and chips, and a plurality of guide rails with L-shaped grooves in the longitudinal direction of the inner surface of the tray are fixed at intervals. The groove mounting portion provided on the inner piece of the guide rail is fixed to the end portion of the curved inner tray having a thickness smaller than the height of the groove mounting portion, so that the surface of the groove mounting portion and the inner The inner tray is mounted in the tray so that a gap is formed between the tray surface and the bottom surface of the inner tray and the inner surface of the tray, and the surface of the guide rail and the curved inner tray are A machine for transporting cuts, which is installed on the surface so that the outer peripheral surface of a spiral conveyor or screw conveyor can be rotated in close proximity. 2. The machine for conveying a cut article according to claim 1, wherein the thickness of the inner tray is made 1 to 5 mm thinner than the size of the mounting portion of the groove provided in the inner piece of the guide rail. 3. A machine for transporting a cut article according to claim 1, wherein one or both of the surface of the guide rail and the surface of the inner tray is subjected to discharge surface treatment, silicon carbide film treatment or the like to form a superhard alloy film. . 2. One or both of the guide rail and the inner tray are made of high-strength, multi-layered structure stainless steel mainly composed of 17% Cr-2% Ni and having a soft ferrite phase, a hard martensite phase, and a fine mixed structure. Or the conveying apparatus of the cut material of Claim 2.

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