JPS6244757Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field De-oiling of oil-adhered chips discharged when cutting metal materials using cutting oil is an important post-cutting process, but this invention relates to an automatic chip deoiling machine with good deoiling efficiency.

b. Prior Art The conventional method of deoiling is a centrifugal separation method, and FIG. 5 shows a cross-sectional view for explaining the principle thereof. Circular shelves 12, 12' are provided which are fixed to the vertical rotating shaft 11 which rotates at high speed, and a rotating cylinder 13 having a large number of pores is also fixed to the vertical rotating shaft 11 and rotates at high speed. An outer wall 14 forming a concentric cylinder is provided on the outside of the rotating cylinder 13, a hopper 15 is provided in the upper part, and a belt conveyor is provided in the lower part.

A part of the chips adhering to cutting oil that fall from the hopper 15 fall onto the shelf 12 rotating at high speed, fly around, and hit the rotating cylinder 13. Furthermore, some of the chips fall onto the high-speed rotating shelf 12' and fly around the rotating cylinder 1.
It falls under 3. The chips that hit these rotating cylinders adhere to the inner wall of the rotating cylinder, resulting in a state as shown in 16, and at the same time, the cutting oil that adheres to the chips separates and flows down through the pores of the cylinder wall. The chips fall onto a belt conveyor located separately under the inner wall of the cylinder and are carried away.

c Problems to be Solved by the Invention The method shown in FIG. Furthermore, cutting oil adhering chips overlap from above.
At the same time, oil removal becomes worse. To prevent this drawback,
Although the rotational speed of the rotating cylinder is intermittently reduced to cause the deoiled chips to fall onto the belt conveyor from the adhesion state shown in FIG. 5, the deoiling efficiency is very poor.

d. Means for Solving the Problems The present invention provides an automatic chip deoiling machine that eliminates the drawbacks of the prior art as described above and can efficiently and smoothly discharge deoiled chips.

In the present invention, the horizontal cross-section of the bowl-shaped bucket is circular, and the vertical cross-section taken by the vertical plane passing through the center of the cross-sectional circle rises gently from the bottom and slopes slightly less than vertical at the top end, A constant inclination α to the inclination perpendicular to the inward direction at the circumferential edge
When fixing a large number of spring plates with a rotating shaft under the bottom wall on the center line of the bucket and rotating them at high speed, cutting oil-adhered chips are dropped from the hopper opening located above the center line. The cutting oil crawls up the inner surface of the bucket due to centrifugal force, while the cutting oil flows out from the numerous pores provided on the side wall of the bucket, and the deoiled chips are discharged outward over the spring plate. This is a chip removal machine.

Furthermore, a rotary screw is provided that is installed at a hopper opening directly above the center of the bucket and that rotates at a low speed by penetrating the tip of the screw into the hopper opening and fixed upright at the center of the bottom of the bucket, so that the cutting oil-adhered chips supplied to the hopper can be smoothly conveyed to the bottom of the bucket. This makes it possible to reduce the amount of energy and evenly distribute it in each direction.

e. Function The most important point of the present invention is the function of a large number of spring plates fixed to the upper edge of the entire circumference of the bucket. If there is no spring plate that faces the inside of the bucket and forms a constant angle of inclination α, chips will crawl up the inside of the bucket at high speed and be discharged, resulting in poor oil removal efficiency and impractical use. The spring plate functions to appropriately suppress the creeping speed of chips and improve oil removal efficiency.

This effect is determined by the strength of the spring plate and the angle of inclination α. If the spring is too weak, it will not be possible to suppress the creeping speed of chips. When adjusting the angle of inclination of the spring plate and the strength of the spring, when the spring plate crawls up and stagnates under the spring plate and reaches a certain amount, the centrifugal force will deform the inclination of the spring plate in the vertical direction and cause chips to form. rises, reaches the tip of the spring plate, flies outward, and the shape of the spring plate is restored. This effect occurs intermittently.

As the inclination angle α increases further, a point is reached where the force that pushes the chips up along the spring plate even though the spring plate is deformed balances the force that pushes the chips under the spring plate down along the spring plate, and the force becomes larger than this. It is not possible to discharge chips at the inclination angle α.

Assuming that the bulk specific gravity of the chips, the size of the bucket, and the rotational speed are constant, there is an appropriate point that exhibits the best effect among the combined conditions of the inclination angle of the spring plate and the strength of the spring. At this appropriate point, the oil removal efficiency and work efficiency will be the best.

If the spring of the spring plate is made too strong or if it is made of a rigid body instead of a spring plate, the initially fixed angle of inclination will not be deformed. Under this condition, if the inclination angle is set to zero, there will be no suppression effect, and although it will be suppressed horizontally, it will not be able to be discharged around the bucket and will only accumulate inside the bucket. The range that can be discharged is limited to the range of zero and near-zero inclination angles, and the practical effect as a deoiling machine is extremely low.

f Example 1 In FIG. 1 showing a side cross section of the bucket of the deoiling machine of the present invention and FIG. 2 showing a plan view, a rotating shaft 4 standing upright directly below the center 3 of the bottom of the bucket 1 is fixed and the driving motor is Enables high-speed rotation at the same speed of 1450 rpm. A vertical cross section taken by a vertical plane passing through the bottom center 3 of the baguette gently rises from the bottom center 3 and forms a nearly vertical angle on the side wall, leading to the upper end 5.
reach. A large number of pores are provided in the side wall (not shown in the drawing). At the upper edge 5, attach the spring plate small piece to the third
As shown in the figure, it is fixed with bolts 10 so that its protruding part 6 is directed inward to the bucket with respect to the perpendicular line, and the angle of inclination α is α.
to do. As shown in Fig. 2, 48 of these spring plate pieces are fixed to the entire circumference of the upper end of the bucket.

Further, chip discharge springs 7 are fixed at two locations among the spring plates around the entire circumference, and serve to cause chips that have fallen into the chip discharge groove 8 to fall from the discharge port 9. The cutting oil separated through the side wall pores falls into the cutting oil discharge groove 8' and is discharged from the discharge port.

g Example 2 In addition to Example 1, as shown in FIG. 4, a rotary screw standing upright at the center 3 of the bowl-shaped bucket is provided to enable low-speed rotation. The rotation speed is 7
~10rpm. Rotating shaft 2 of the rotating screw
The screw passes through the center of the bottom of the bucket and stands concentrically upright at the center of the cylindrical bucket rotating shaft, allowing the bucket to rotate at 1450 rpm and the rotary screw to rotate at a low speed at the same time. The tip of the rotating screw penetrates into the hopper opening, and the cutting oil-adhered chips supplied to the hopper are smoothly sent to the bottom by the screw and evenly distributed in each direction.

An example of dimensions for implementing this invention is the diameter of a bowl-shaped bucket.
350 mm in height, 110 mm in height, the length of the protrusion 6 of the spring plate fixed on the entire periphery is 20 mm, the width is 20 mm, and the material of the spring plate is spring steel.

h. Effects of the invention The feature of the automatic chip deoiling machine of the present invention is that, unlike conventional deoiling machines, it has good deoiling efficiency and good deoiling efficiency.

The requirements and operation of the configuration of the present invention to exhibit this feature have already been described in detail, but they will be summarized below and described as the effects of the present invention. The action of the spring plate fixed to the upper edge of the bowl-shaped bucket that rotates at high speed is an essential requirement of this invention, and this ensures that the chips adhering to the cutting oil are sufficiently deoiled and the chips are removed smoothly. drained away. Furthermore, when a low-speed rotating screw is provided in addition to this configuration, the cutting oil-adhered chips supplied to the hopper are smoothly and continuously conveyed to the bottom of the bucket and are evenly distributed in all directions. As a result, efficiency is extremely high through the supply of cutting oil-adhered chips and the discharge of deoiled chips.

[Brief explanation of the drawing]

Fig. 1 is a side cross section of the automatic chip deoiling machine according to the present invention, Fig. 2 is its plan view, Fig. 3 is a drawing of the spring plate fixed, Fig. 4 is a drawing of the low-speed rotating screw installed in the bucket, and Fig. 5 is This is a conventional chip deoiling machine. 1... Bucket, 2... Rotating axis of rotating screw, 3... Center of bottom of bucket, 4... Rotating axis of bucket, 5... Upper edge of bucket, 6... Fixed spring plate protrusion, 7... Chip discharge Fly, 8...Chip discharge groove, 9...Chip discharge port, 10...Bolt, 11...
... Rotating shaft, 12, 12' ... Circular shelf, 13 ... Rotating cylinder, 14 ... Outer wall, 15 ... Hopper, 16
...adhered chips, α...spring plate inclination, 2'...rotating screw.

Claims (1)

[Claims for Utility Model Registration] (1) The horizontal cross section of a bowl-shaped bucket with many pores on the side wall is circular, and the vertical cross section of the vertical plane passing through the center line of the horizontal cross section circle is gentler than the bottom. A large number of spring plates are fixed to each other, which have a nearly vertical inclination at the top end thereof, and have a constant angle of inclination toward the inside of the bucket at the entire circumference of the top end, and furthermore, a rotating shaft is installed under the bottom wall of the bucket at the center line of the bucket. When the hopper is fixed and rotated at high speed and chips with cutting oil adhering to it are dropped from the hopper opening located above the center line, the cutting oil flows out from the pores in the side wall of the bucket, and the deoiled chips touch the spring plate on the entire circumference. An automatic chip deoiling machine characterized by being designed to discharge oil beyond the limit. (2) Install a rotary screw standing upright at the center of the inner bottom of the bucket, so that its tip penetrates into the hopper opening, and rotate the screw at 7 rpm. At the same time, rotate the bucket at a high speed of 1450 rpm to remove cutting oil-adhered chips. Utility model registration claim 1 characterized in that the following is provided to the hopper:
Automatic chip deoiling machine described in section.