JP2003220536A - Chip processing unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a chip processing unit, with a smaller hunger area, which enlarges angles to raise chips and discharges chips without fail regardless of amount or size of chips T. <P>SOLUTION: A chip processing unit 100 conveys chips out of a machine tool which cuts works by tools. The unit 100 has a first conveyor 114 and a pressing part 150 which presses toward the conveyor 114. Chips are conveyed by the first conveyor 114 and the pressing part 150. The conveyor 114 comprises a lower part which mounts to carry chips T, a lifting part which lifts up the mounted chips, and an upper part which discharge the chips. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip disposal device, and more particularly to a chip disposal device provided in a machine tool.

[0002]

2. Description of the Related Art In a machine tool such as a lathe, chips such as chips generated by a tool cutting a workpiece are conveyed to a chip processing device provided in the machine tool.
The chip processing device includes a chip conveyor and the like, and conveys the chips to a predetermined container in order to remove the chips.

Generally, in machine tools, there are machine tools in which a coolant is used between the work and the tool during cutting, and machine tools in which the tool cuts the work in a dry state without using the coolant. Both of these are equipped with a similar chip handling device. Hereinafter, a machine tool using a coolant will be described.

In a machine tool in which a coolant is used, the coolant is sprayed toward a cutting point in order to prevent the work and the tool from being deformed due to a temperature rise. This coolant has a function of suppressing the temperature rise of the work and the tool, and causing chips to flow down.

The coolant injected toward the cutting point is
In a state that contains chips such as chips generated by cutting,
It is transported to a chip processing device including a chip conveyor and the like. The coolant is accumulated in a housing provided in the lower part of the chip processing device or a container in the housing.

The chip transport device removes chips from the coolant and reuses the coolant.

FIG. 5 is a sectional view of a conventional chip processing apparatus 10. The conveyor 1 is provided in a housing 12 having a substantially L shape.
4 are arranged so as to move around. An inflow port 16 is provided at one end of the chip processing apparatus 10, and a chip discharge port 18 is provided at the other end. The chips T in the coolant C flowing in from the inflow port 16 are mounted on the conveyor 14 and convey the chips T to a position higher than the liquid level of the coolant C and higher than the chip input port B _{0 of the} bucket B. At that time, the scraping plate 20 provided on the conveyor 14 raises the chips T. After that, the chips T are conveyed to the chip discharge port 18, dropped from the chip discharge port 18, and collected.

[0008]

However, in the chip processing apparatus 10, when the amount of the chips T is large or the size of the chips T is large, the chips T are raised to the chip discharge port 18. There was a problem that it fell over the scraping plate 20 and dropped.

In particular, if the angle at which the chips T are raised is too large, the chips T often fall over the scraping plate 20. As a result, the chips T are accumulated below the ascending portion of the chip processing device 10, and the chip block K is generated.

On the other hand, when the angle at which the chips T are raised is small, the ability to convey the chips T can be improved, but the installation area of the chip processing apparatus 10 becomes large. Further, the coolant C drops from both sides of the conveyor 14 when the chips T are raised to the chip discharge port 18, and is accumulated in the housing 12 for reuse. Therefore,
When the angle at which the chips T are raised is small, the amount of the coolant C that is transported together with the chips T increases, and the amount of the coolant C discharged from the chip discharge port 18 also increases.

These problems occur even if the shape of the scraping plate 20 is deformed when the amount of the chips T is large or the size of the chips T is large.

Therefore, an object of the present invention is to provide a chip processing device capable of reliably discharging chips regardless of the amount of chips T or the size of chips T.

Another object of the present invention is to provide a chip processing device which can relatively increase the angle at which chips are lifted and which has a small installation area.

[0014]

A chip processing device according to a first embodiment of the present invention is a chip processing device for carrying cutting of a machine tool for cutting a work with a tool, and mounting chips. A lower side part, a first conveyor composed of an ascending part for elevating the mounted chips and an upper part for discharging the elevated chips, and a pressing part for pressing toward the first conveyor, and the first part The chips are conveyed by the conveyor and the pressing unit.

[0015] Preferably, the first conveyor has a mounting portion for mounting chips thereon, and first projecting members protruding from a surface of the mounting portion and provided at regular intervals, and mounted on the mounting portion. When the cut chips pass over the first protruding member, the pressing portion presses the chips, and when the chips mounted on the mounting portion do not pass over the first protruding member, the pressing portion moves. The first protruding member is pressed.

[0016] Preferably, the pressing portion presses the first protruding member or the chips toward the rising portion.

Preferably, the pressing portion is a second conveyor having a pressing surface for pressing chips, and the pressing surface is
The mounting portion and the first projecting member operate at the same speed in the same direction.

[0018] Preferably, the second conveyor operates by transmitting the power of the first conveyor to the second conveyor.

[0019] Preferably, the second conveyor is configured such that a friction force generated by contact between the pressing surface and the first projecting member or a friction force generated by contact between the pressing surface and chips causes the first conveyor to move. It operates by transmitting the power of the second conveyor to the second conveyor.

In the chip disposal device according to the second embodiment of the present invention, the second conveyor further has a second projecting portion projecting from the pressing surface.

The second conveyor comprises a plurality of axially rotatable main rollers, an annular pressing belt stretched around the plurality of main rollers so as to be able to move around the main rollers, and the pressing belt. A guide roller capable of pressing the included pressing surface toward the first conveyor and changing the distance between the first conveyor and the pressing surface based on the amount or size of chips conveyed. And a spring that elastically presses the pressing belt toward the first conveyor via the guide roller.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. The present embodiment does not limit the present invention.

FIG. 1 is a sectional view of a chip processing device 100 according to a first embodiment of the present invention. The chip processing device 100 is a machine tool for cutting (not shown) for cutting while spraying a coolant C to a contact point between a tool and a work.
Is disposed in the vicinity of.

The chip processing apparatus 100 includes a mounting conveyor 114 for mounting the chips T mixed in the coolant, and a pressing conveyor 1 for pressing the chips T against the mounting conveyor 114.
And 50. The mounting conveyor 114 and the pressing conveyor 150 are housed in the housing 112.

The housing 112 has an inflow port 116 into which the coolant C containing the chips T flows and a chip discharge port 118 from which the chips T are discharged. The housing 112 has
A pump (not shown) for injecting the coolant C to the contact point between the tool and the work is provided.

The loading conveyor 114 has a lower flat portion 114a on the side of the inflow port 116 and a lower flat portion for conveying the chips T toward the chip discharge port 118 located at a position higher than the liquid surface of the coolant. 114a extending upward from 114a, and the chip discharge port 11 from the rising portion 114b.
8 and an upper flat part 114c for transporting the chips T to the upper end.
The mounting conveyor 114 is formed in a substantially L shape as a whole.

The mounting conveyor 114 is formed in an annular shape by connecting a number of hinge plates by a link mechanism. The detailed illustration of the hinge plate is omitted.

The mounting conveyor 114 also includes a mounting portion 115 which is composed of flat portions of hinge plates connected to each other and mounts the chips T, and a scraping plate 120 which projects from the surface of the mounting portion 115 and catches the chips T.

Lower flat portion 114a and upper flat portion 11
At the end of 4c is a sprocket 119 that can rotate about an axis fixed to the housing 112.
Is provided. The mounting conveyor 114 is stretched around the sprocket 119 so that it can be moved around.

The pressing conveyor 150 is arranged along the rising portion 114b at an inclination of substantially the same angle as the rising portion 114b.

The pressing conveyor 150 has a housing 112.
A plurality of main rollers 152 that can rotate about a fixed shaft, and an annular pressing belt 154 that is stretched around the plurality of main rollers 152 so as to be able to move around the main rollers 152. A guide roller 156 that elastically presses the pressing surface 155 of the pressing belt 154 toward the mounting conveyor 114.

Further, as shown in FIG. 2, the pressing conveyer 150 has a pressing belt 1 via a guide roller 156.
A spring 158 that elastically presses 54 toward the mounting conveyor 114 is further included.

The guide roller 156 is mounted on the mounting conveyor 11
4 is configured to be movable with respect to the mounting portion 115. Therefore, accordingly, the guide roller 156
Is the pressing surface 155 of the pressing belt 154 and the mounting portion 11.
The distance between the mounting conveyor 114 and the pressing surface 155 can be changed by moving based on the amount or size of the chips T being pressed during the period 5.

As a result, when the chips T mounted on the mounting portion 115 do not exceed the height of the scraping plate 120, the pressing surface 155 of the pressing conveyor 150 has the pressing surface 155.
Press. On the other hand, the chips T mounted on the mounting portion 115
When the scrap exceeds the height of the scraping plate 120, the pressing surface 155 of the pressing conveyor 150 removes the chips T from the mounting portion 115.
Press toward.

Next, the operation of the chip processing device 100 and its effect will be described.

The coolant C containing the chips T flows into the inflow port 116 of the housing 112. The chips T have, for example, a curled shape as illustrated. The chips T are mounted on the mounting portion 11 of the mounting conveyor 114 that moves around.
Settle to 5. The chips T are caught by the scraping plate 120 provided on the surface of the mounting portion 115 and are conveyed from the lower flat portion 114a to the rising portion 114b.

According to the present embodiment, the sprocket 11
9 rotates counterclockwise. The main roller 152 rotates clockwise in the opposite direction to the sprocket 119. Therefore, the pressing surface 155 of the pressing conveyor 150 moves in substantially the same direction as the mounting portion 115 in the rising portion 114 b of the mounting conveyor 114. In addition, the pressing surface 155 and the mounting portion 1
The speed of movement with 15 is almost the same. That is, the mounting portion 115
The relative velocity of the pressing surface 155 with respect to is maintained at approximately zero.

Therefore, when the chips T reach the rising portion 114b, they are conveyed upward along the rising portion 114b. At this time, when the chips T are large or large enough to exceed the height of the scraping plate 120, the chips T are conveyed while being pressed between the mounting portion 115 and the pressing surface 155. For example,
The chip block K shown in FIG.
The sheet is conveyed to the upper flat portion 114c while being pressed by 15.

On the other hand, when the chips T are so small or small that they do not exceed the height of the scraping plate 120, the pressing surface 155 is used.
The scraping plate 120 is pressed. The chips T are conveyed while being caught by the scraping plate 120. For example, the chip t shown in FIG.
Is conveyed to the upper flat portion 114c while being surrounded by the pressing surface 155, the mounting portion 115 and the scraping plate 120.

Therefore, even if the chips T are large or large enough to exceed the height of the scraping plate 120, the chips T are reliably discharged from the chip discharging port 118 without overcoming the scraping plate 120 and dropping. obtain. In addition, the lower flat portion 11
Even if the inclination angle θ of the rising portion 114b with respect to 4a is made larger, the chips T do not ride over the scraping plate 120 and fall. In particular, even if the inclination angle θ is near 90 degrees, the chips T can be conveyed to the chip discharge port 118 without dropping. Further, by increasing the inclination angle θ, the installation area of the chip processing device 100 becomes smaller. further,
By increasing the inclination angle θ, the coolant C easily falls, and the amount of the coolant C discharged together with the chips T from the chip discharge port 118 is reduced. In other words, when the amount of the coolant C discharged from the chip discharge port 118 is set to a constant amount, the length of the rising portion 114b can be shortened by increasing the inclination angle θ. This also reduces the installation area of the chip processing device 100. Therefore, the size of the installation area of the machine tool can be made smaller than before.

FIG. 2 shows an X- of the chip processing apparatus 100 of FIG.
It is sectional drawing when it cut | disconnects along an X-ray. In Figure 2,
The pressing surface 155 is attached to the mounting portion 11 via the guide roller 156.
A spring 158 is shown that resiliently urges toward 5.

The side plates 160 arranged on both sides of the pressing belt 154 are arranged so as to be fixed to the housing 112. The side plate 160 is provided with fixing portions 162 and 164 fixed to the side plate 160. The fixing portions 162 and 164 are respectively provided with the opening 16
2a and 164a.

In addition, a spring shaft 166 having a spring 158 attached extends through openings 162a and 164a and openings 162a and 1a.
It is provided so that it can slide with respect to 64a. The spring 158 is the spring shaft 166.
Among them, it is wound between a spring locking portion 168 fixed to the spring shaft 166 and a fixed portion 162.

A roller shaft 170, which serves as a rotation shaft of the guide roller 156, is attached to the spring shaft 166 through an elongated hole portion 172 formed in the side plate 160. One end of the roller shaft 170 is attached to the spring shaft 166, and the other end is attached so that the guide roller 156 can rotate. The elongated hole portion 172 extends in the same direction as the spring 158 expands and contracts. Therefore, the guide roller 156 can move in the vertical direction with respect to the mounting portion 115 along the elongated hole portion 172 together with the spring shaft 166.

When the chip T is so small or small that it does not exceed the height of the scraping plate 120, the spring 158 is
The spring shaft 166 is pushed down toward the mounting portion 115. As a result, the spring 158 causes the pressing surface 15 of the pressing conveyor 150 to pass through the guide roller 156.
5 is elastically pressed against the scraping plate 120 of the mounting conveyor 114.

On the other hand, when the chips T are large or large enough to exceed the height of the scraping plate 120, the chips T push up the pressing surface 155. Therefore, the guide roller 156
And the pressing surface 155 moves upward with respect to the mounting portion 115. Therefore, the spring shaft 166 is also mounted on the mounting portion 11.
Move upward with respect to 5. As a result, the spring 158 bends and the pressing surface 155 presses the chip T.

The chip processing apparatus 100 includes the pressing conveyor 15
A drive unit for driving the 0 main roller 152 may be further included. However, when the driving unit is provided on the pressing conveyor 150, the pressing conveyor 150 and the mounting conveyor 114 must operate in synchronization.

However, preferably, the frictional force between the pressing surface 155 and the scraping plate 120, or the pressing surface 155 and the chip T.
The frictional force between and transfers the power of the mounting conveyor 114 to the pressing conveyor 150. As a result, the pressing conveyor 150 can operate without providing a drive unit for driving the pressing conveyor 150. Since there is no drive unit for driving the pressing conveyor 150, power consumption is low, and the chip processing device 10
The footprint of 0 is relatively small.

Note that FIG. 2 shows the chip processing apparatus 100 when the chips T are so small or small that they do not exceed the height of the scraping plate 120.

FIG. 3 is a perspective side view of the pressing conveyor 150. In FIG. 3, the pressing conveyor 150 is shown in a tilted state as in FIG. 1 for easy understanding.

The pressing conveyor 150 is provided with a plurality of spring shafts 166. Two guide rollers 156 are attached to each spring shaft 166 through the elongated holes 172 of the side plate 160. As described above, the guide roller 156 can move in the direction perpendicular to the pressing surface 155 together with the spring shaft 166.

The pressing conveyor 150 has the same structure on the opposite side surface.

FIG. 4 is a sectional view of a chip disposal device 200 according to a second embodiment of the present invention. The pressing conveyor 250 according to the present embodiment is different from the first embodiment in that it has a protruding portion 260 protruding from the surface of the pressing belt 254.

With the protrusion 260, the chips T are more easily caught than in the first embodiment, and the transport capability of the chips T is increased. Further, since the scraping plate 120 is caught by the projecting portion 260, the pressing conveyor 250 does not slip with respect to the mounting conveyor 114. Therefore, the loading conveyor 114
The power of can be reliably transmitted to the pressing conveyor 250.

The shape of the scraping plate 120 may be designed arbitrarily. In this case, the protrusion 260 may be designed so as to correspond to the shape of the scraping plate 120 and mesh with the scraping plate 120. As a result, the chips T are reliably caught by the scraping plate 120, and the projection 260 and the scraping plate 120 are engaged with each other, so that the chips T are reliably transported to the chip discharge port 118 without dropping.

The chip processing apparatus according to this embodiment can be used also for a machine tool that performs cutting in a dry state without using a coolant. In this case, the chip processing device does not have the effect related to the coolant, but with respect to other effects, the same effects as the effects of the above-described first or second embodiment can be obtained.

[0057]

The chip processing apparatus according to the present invention can reliably discharge chips regardless of the amount of chips T or the size of chips T.

Further, in the chip disposal device according to the present invention, the angle at which the chips are raised can be made relatively large, and the installation area becomes smaller.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a chip processing device 100 according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the chip disposal device 100 of FIG. 1 taken along line XX.

FIG. 3 is a perspective side view of a pressing conveyor 150.

FIG. 4 is a cross-sectional view of a chip disposal device 200 according to a second embodiment of the present invention.

FIG. 5 is a cross-sectional view of a conventional chip disposal device 10.

[Explanation of symbols] 100 Chip processing equipment 114 loading conveyor 112 housing 116 Inlet 118 Chip discharge port 115 mounting section 119 Sprocket 120 scraping board 150 pressing conveyor 152 Main roller 154 pressure belt 156 Guide roller 158 spring 140 loading conveyor 155 Pressing surface 166 spring shaft 162 fixed part 168 Spring locking part 170 roller shaft 172 slot

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tomohisa Akira             2068 Ooka, Numazu City, Shizuoka Prefecture Toshiba Machine Co., Ltd.             In the company

Claims (8)

[Claims] 1. A chip processing device for transporting chips of a machine tool for cutting a work with a tool, comprising a lower part for mounting chips, a rising part for lifting the mounted chips, and discharging the lifted chips. First part consisting of the upper part
And a pressing unit that presses toward the first conveyor, and a chip processing device that conveys chips by the first conveyor and the pressing unit. 2. The first conveyor includes a mounting portion for mounting chips, and first protruding members protruding from a surface of the mounting portion and provided at regular intervals, and mounted on the mounting portion. When the chips pass over the first protruding member, the pressing portion presses the chips, and when the chips mounted on the mounting portion do not pass over the first protruding member, the pressing portion is The chip processing device according to claim 1, wherein the first projecting member is pressed. 3. The chip processing device according to claim 1, wherein the pressing part presses the first projecting member or chips toward the rising part. 4. The pressing unit is a second conveyor having a pressing surface for pressing chips, and the pressing surface moves in the same direction at the same speed as the mounting unit and the first projecting member. The chip disposal device according to any one of claims 1 to 3. 5. The chip processing apparatus according to claim 4, wherein the second conveyor operates by transmitting the power of the first conveyor to the second conveyor. 6. The second conveyor is configured such that a friction force generated by contact between the pressing surface and the first protrusion member or a friction force generated by contact between the pressing surface and chips causes the first conveyor to move. The chip processing apparatus according to claim 5, wherein the chip processing apparatus operates by transmitting the power of a conveyor to the second conveyor. 7. The chip processing device according to claim 4, wherein the second conveyor further includes a second protruding portion protruding from the pressing surface. 8. The second conveyor comprises: a plurality of axially rotatable main rollers; an annular pressing belt stretched around the plurality of main rollers so as to be able to move around; and the pressing roller. A guide that presses the pressing surface included in the belt toward the first conveyor, and that can change the distance between the first conveyor and the pressing surface based on the amount or size of the transported chips. The chip treatment according to any one of claims 4 to 7, further comprising a roller and a spring that elastically presses the pressing belt toward the first conveyor via the guide roller. apparatus.