JPH0141480Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a metal chips crushing device for shearing and crushing metal chips discharged from a machine tool.

<Prior Art> Generally, metal chips generated when a workpiece is processed using a lathe, drilling machine, milling machine, etc. are carried out by a chip conveyor and collected in a chip storage box.

However, during the conveyance process, metal chips sometimes became entangled with the end of the conveyor, resulting in poor movement and overload of the conveyor. Therefore,
The operator has to remove the entangled chips and operate the conveyor again each time, which is not only extremely troublesome but also reduces work efficiency.

Therefore, in order to solve this problem, the metal chips were crushed by a metal chip crusher as shown in Japanese Patent Publication No. 57-89478 (Fig. 6), and then conveyed out by a conveyor.

The outline of the metal chip crushing device disclosed in Japanese Patent Publication No. 57-89478 is as follows.

A chip input hopper 9 is attached to a casing 2 having a pulverized chip discharge port 1, and a rotating rotor shaft 3 is installed inside the casing 9, and an appropriate interval is provided in the longitudinal direction of the rotor shaft 3. Attach the shear blades 6...6, and further attach a chip hooking protrusion member 7 to the front part of any shear blade 6,
The casing 2 is arranged so as to mesh with each shear blade 6.
A comb-shaped fixed blade 8 is attached to the inside of the blade, and metal chips are crushed by the shearing force generated by the meshing of the shearing blade 6 and the fixed blade 8.

The positions of the shearing blades 6 attached at appropriate intervals in the longitudinal direction of the rotor shaft 3 are respectively displaced with respect to the rotation direction, so that the shearing blades 6 and fixed blades 8 do not mesh at the same time, and when shearing This is to reduce the load on the system.

The arrow R indicates the direction of rotation, and the large arrow indicates the direction of chip injection.
Indicates the discharge direction.

<Problem that the invention aims to solve> However, when the chips are fed into the chip crusher all at once, the chips get entangled and push against each other, forming bridges in the chip input hopper, preventing the chips from being fed into the rotor shaft and causing the chips to be crushed. There was a problem that it was not possible.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and provide a metal chip crushing device that can crush the entire amount of chips without forming bridges even if the chips are charged at once.

<Means for solving the problem> The present invention has a chip input port in the upper part of the main body, and a discharge port for discharging the chips in the lower part of the main body, so that the chips introduced from the input port are A shearing means for crushing the chips is provided in the middle of the falling path of the chips that naturally fall inside the main body and reach the discharge port, and this shearing means includes a shearing blade provided on the rotating body and In a metal chip crusher, which is equipped with a fixed blade, and the crushing is performed by the meshing of the two blades, natural falling of the chips occurs during the falling path of the chips from the chip inlet to the shearing means. In order to prevent this, a rotating shaft is passed and fixed to the main body, and this rotating shaft has an appropriate number of protruding members projecting radially from the shaft on the circumferential surface, and each protruding member is provided on the circumferential surface of the rotating shaft. It is an object of the present invention to provide a metal chip crushing device characterized in that the metal chips are arranged at appropriate intervals from each other.

<Function> Even if a large amount of chips are thrown in at once, the rotary shaft and its protrusion placed in the middle of the falling path receive these chips, and as they rotate, the chips are gradually dropped into the shearing means. go. Furthermore, since both the rotating shaft and the rotating body of the shearing means are fixed to the main body, the rotating shaft and the shearing means always maintain a constant distance.

Therefore, even if a large amount of chips are input, in conjunction with the above action, a constant amount of chips is always sent to the shearing means, and the chips processed by the shearing means are discharged in a uniformly pulverized state.

<Example> Figures 1 to 3 show an example of the present invention, with Figure 1 showing a front view, Figure 2 a top view, and Figure 3 a left side view. There is.

Hereinafter, preferred embodiments of the invention will be described in detail by way of example with reference to the drawings. However, the dimensions, shapes, materials, relative positions, etc. of the components described in this example are not intended to limit the scope of this invention, unless specifically stated. , is merely an illustrative example.

As shown in FIG. 1, the metal chip crushing device of the present invention includes, broadly speaking, a casing 10 having a crushing chip discharge port 11 at the bottom, a rotor shaft 12 installed inside the casing 10, and a rotor shaft 12 connected above the casing 10. A chip input hopper 20 provided as a chip input hopper, and a feed roller 2 installed inside the chip input hopper 20.
It is composed of 1.

The casing 10 has a box shape, has a chip input hopper 20 connected to its upper part, and is placed on an underframe 30 made of steel.

A comb-shaped fixed blade 14 that meshes with the shearing blade 13 of the rotor shaft 12 is provided within the casing 10. (See Figure 2) The rotor shaft 12 has both ends 12a and 12b rotatably fitted into the casing 10, and as shown in Figure 1, the right end 12a is connected to a reducer 32 via a joint 31, and further It is connected to a drive motor 33 on the right side thereof, and is configured to rotate (in the direction of arrow R) by the drive motor 33.

The rotor shaft 12 has both ends 1 as shown in FIG.
It consists of small diameter shaft parts 2a and 12b and a large diameter shaft part 12c, and flange parts 12d are provided at both ends of the large diameter shaft part, and flange parts 12d are arranged at equal intervals between the flange parts 12d and 12d. Annular raised portion 12e
However, in addition, fan-shaped shearing blades 13...13 are attached to the rotor shaft 12 at two locations on each of the raised portions 12e...12e with a displacement of 180 degrees.

Further, the shearing blades 13...13 formed on the respective raised portions 12e...12e are each formed to be displaced in position with respect to the rotational direction.

The feed roller 21 is a rod as shown in FIG.
The length of each protruding member 22 is maintained at an appropriate interval so as not to mesh with the rotor shaft 12. (The protruding member 22 may be provided with a claw for catching chips as appropriate.) The right end 21a of the feed roller 21 is supported by a bearing 23 provided at the upper end of the casing 10.

The left end 21b is supported by a bearing 23 in the same way as the right end 21a, and a gear 40 is provided to the left of the left end 21b.
1 and another gear 42, and the rotor shaft 1
2 (in the direction of arrow R). (See FIG. 3) An embodiment of the present invention is constructed as described above, and is installed at a position where metal chips generated from a machine tool fall.

Next, the operating state of the metal chip crusher having this configuration will be explained.

First, when the drive motor 33 is activated, the rotor shaft 12 and the feed roller 21 rotate in the direction of the arrow R shown in the figure.

At this time, each shearing blade 13...1 of the rotor shaft 12
3 rotates while passing between the comb blades of the comb-shaped fixed blade 14.

The feed roller 21 is rotated in the same direction by receiving power from the drive motor 33 via gears 40, 41, and 42 that mesh with the rotor shaft 12.

After achieving this state, metal chips are thrown into the hopper 20.

The introduced metal chips are first sheared by the shearing blade 13 of the rotor shaft 12 and the fixed blade 14 of the casing 10, but gradually bridging occurs and the metal chips are no longer sheared, but the feed roller 21 continues to shear the metal chips to the protruding member 22. Hook the rotor shaft 1 little by little
2, the metal chips thrown in without bridging are sheared and crushed and come out from the discharge port 11.

In this way, the metal chips are transferred little by little to the rotor shaft.
2 and shear-pulverizes it, so it can be used for a variety of shapes and for SS materials, stainless steel materials, etc., which were previously difficult to crush.
Even materials such as aluminum can be easily crushed.

Although this embodiment shows an example in which the feed roller 21 and the rotor shaft 12 are rotated in the same direction, the same effect can be obtained even in the opposite direction of rotation.

<Effects of the invention> By relying on the falling of chips for the basic movement of chips inside, it has become possible to constantly process chips quantitatively in a miniaturized crushing device. Furthermore, as explained in detail above, the metal chips crushing device of the present invention shears and crushes the metal chips sent little by little to the rotor shaft by the feed roller using the shear blade attached to the rotor shaft and the fixed blade of the casing. This not only prevents the rotor shaft from spinning idly due to bridging caused by metal chips, but also
Not only hard metal chips can be pulverized, but also soft metal chips, which have been considered difficult in the past, can be easily pulverized.

Therefore, even chips having different shapes depending on the material and processing method can be reliably crushed.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, with Figure 1 being a front view, Figure 2 being a plan view, Figure 3 being a left side view, and Figures 4 and 5 being a left side view. 1 to 3, FIG. 4 is a perspective view of the rotor shaft, and FIG. 5 is a perspective view of the feed roller. FIG. 6 shows a perspective view of a conventional example. 10...Casing, 11...Discharge port, 12...
... Rotor shaft, 13 ... Shearing blade, 14 ... Fixed blade, 20 ... Chip input hopper, 21 ... Feed roller, 22 ... Projection member.

Claims (1)

[Scope of utility model registration request] It has a chip inlet at the top of the main body and a discharge port for discharging the chips at the bottom of the main body, and the chips introduced from the inlet drop naturally inside the main body and fall while reaching the outlet. In the middle of the path, there is a shearing means for crushing the chips. In a metal chip crushing device that performs crushing, a rotary shaft is passed along the falling path of the chips from the chip input port to the shearing means to prevent the chips from falling naturally, and is fixed to the main body, This rotating shaft has an appropriate number of protruding members projecting radially from the shaft on its circumferential surface, and each protruding member is arranged at appropriate intervals from each other on the circumferential surface of the rotating shaft. A metal chip crushing device characterized by: