JP3157355B2 - Chip removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for discharging cutting chips such as cutting chips generated when processing a material such as a metal material, a composite material or wood to a discharge port.

[0002]

2. Description of the Related Art Conventionally, screw conveyors have been widely used for transferring cuttings such as chips generated in the course of machining, or waste such as dust. As a prior art relating to this type of screw conveyor, there is, for example, one disclosed in Japanese Utility Model Laid-Open No. 63-86945. In this prior art, a disk-shaped screw blade screw is provided in a U-shaped gutter, one edge of the gutter is formed to be lower than the other edge, and chips are transferred by rotating the blade screw. It is intended to be.
Further, as a thing using a screw conveyor for the transfer of an object including a compressible material or a soft strip, for example,
There is a conventional technique described in Japanese Utility Model Laid-Open No. 57-30214. This screw conveyor is provided with a disk-shaped screw blade and a rectangular scraper at its end, so as to transfer the caking substance by rotation of the screw blade,
The rectangular scraper can scrape off the clogging near the discharge port of the transferred object.

[0003] By the way, it is also known that a wire wound in a spiral shape is used in place of a screw, and an object to be transferred is continuously transferred in an axial direction like a screw conveyor. Generally, when a helical rotating body is used like a screw conveyor, the transfer capability of the transferred object is lower than that of a screw conveyor. In view of this, for example, there has been proposed one in which the transfer capacity is improved as in an example described in Japanese Utility Model Laid-Open No. 64-56410.

FIG. 8 is a diagram showing the configuration of this prior art. Reference numeral 1 indicates a ribbon as a rotating body formed in a spiral shape. The ribbon 1 is wound around the outer circumference of the rotating shaft 2 at a predetermined interval, and the entire ribbon 1 is accommodated in a flexible tube 5 forming a transfer path. In this conventional technique, the spiral blades 6 are attached to the ribbon 1 in correspondence with the positions of the supply ports 4, so that the transfer target supplied from the supply ports 4 is forcibly transferred by the spiral blades 6. It is something that has become.

[0005]

However, in the prior art shown in FIG. 8, the transfer force on the transferred object rapidly decreases at the portion where the spiral blade 6 is not provided. For this reason, when the present invention is applied to the transfer of the cutting chips of the cutting process and the cut material having a relatively large shape such as the end material is transferred, the cut material enters the inside of the ribbon 1 at a portion where the spiral blade 6 is not provided, and in some cases, May cause the ribbon 1 to stop. Therefore, an object of the present invention is to solve the problems of the prior art, improve the transfer capability of the cutting chips transferred by the rotation of the helical rotating body as much as possible, and reduce the cutting chips of a relatively large shape. However, an object of the present invention is to provide a device for discharging cutting chips that can be easily discharged.

[0006]

In order to achieve the above object, according to the present invention, a helical rotary body is rotatably provided on a transfer path defined by a wall surface, and the rotary body is rotated to rotate cutting chips. In a cutting chip discharging device adapted to be transported in the axial direction of the body, a rotating body is formed into a coil shape by a spring material, and a plurality of concave portions curved inward toward the rotating axis direction for each turn of the coil. It is characterized by having been formed.

[0007]

According to the present invention, the concave amount C of the concave portion is larger than at least the thickness of the wire rod of the spring coil. Therefore, when the spring coil is rotating, the force for transferring the cutting chips in the axial direction is reduced by the concave amount C. Since it acts from an annular surface having a corresponding width, the transfer force can be enhanced even at the same rotational speed. In addition, by forming the concave portion in the spring coil in this manner, the rigidity of the spring coil itself is improved, so that a large shavings and the like are caught during ejection, so that the spring coil is prevented from being deformed and the transfer force is reduced. can do. Further, by setting the pitch of the spring coils to be large on the discharge port side, it is possible to easily discharge the cutting chips and the scraps inside the spring coils.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a chip discharging device according to the present invention will be described below with reference to the accompanying drawings. 1 is a plan view of a chip discharge device according to the present embodiment, FIG. 2 is a side view of the chip discharge device, and FIG. 3 is a view taken along the line III-II in FIG.
It is I sectional drawing. 1 to 3, reference numeral 10 denotes a cover 10 of the apparatus main body. A spiral spring coil 11 is incorporated in the cover 10. The helical spring coil 11 is formed by winding a wire material serving as a spring material into a coil shape, and is incorporated in a transfer path 14 defined by a partition 12 in the cover 10, and is formed at an end of the cover 10. The drive unit 15 is connected to the drive unit 15. The driving unit 15 directly drives the spring coil 11 to rotate using a motor.
6 are connected, and the spring coil 11 is connected via the coil connecting member 16.

FIGS. 6 and 7 show a spring coil 1.
FIG. 2 is a view showing a connection structure between a connector 1 and a connection tool 16. Connector 1
The shaft 6 has a shaft hole 18 at the center of rotation, through which the drive shaft 17 is inserted, and a connecting portion 19 protruding coaxially with the shaft hole 18. The drive shaft 17 is joined to the connecting portion 19 by a bolt 20. On the other hand, the coil connector 16 is integrally provided with a fixing portion 21 protruding so as to face each other on the diameter thereof, and the fixing portion 21 is provided with a transparent portion through which one end of the spring coil 11 is inserted. A hole 22 is formed. Therefore, the end of the spring coil 11 is joined to the connector 16 by tightening the set screw 23 into the fixing portion 21.

Next, in FIG. 3, a partition wall 12 has an inclined surface 25 inclined downward from one side wall of the cover 10.
And a gutter portion 26 formed of a curved surface continuously below the spring coil 11 so as to form a predetermined gap. Further, as shown in FIGS.
6, the partition wall 12 has an outlet 27.
The guide plate 13 for leading out the cutting chips toward the discharge port 27 is fixed to the side wall of the cover 10.

Next, FIG. 4 is a side view showing the shape of the spring coil 11, and FIG. As shown in FIG. 5, the spring coil 11 is provided with a plurality of recesses 3 on a similar circumference of the wire for each turn of the coil.
0 is formed. The recesses 30 are provided at three locations at every 120 ° at a circumferential angle A for one turn of the spring coil. In the case of this embodiment, the concave portion 30 is formed so as to be depressed toward the center, and the concave amount C is set to at least the thickness of the wire of the spring coil 11 as a minimum value.
The size is set to an appropriate size according to the transfer conditions of chips and the like. The shape of the concave portion 30 can be appropriately set for the width B, the outer radius of curvature R1, and the inner radius of curvature R2.

FIG. 4 shows the pitch of the spring coil 11. In this embodiment, the pitch D of the portion near the discharge port 27 is changed to a pitch D larger than the pitch E of the other portions.

This embodiment is constructed as described above. Next, the operation of the embodiment will be described. First, FIG.
In the above, chips such as chips and cuttings generated from the work by cutting or cutting work fall to the inclined portion 25 of the partition wall 12, and are collected in the transfer path 14 from the inclined portion 25. In the transfer path 14, since the spring coil 11 rotates, the chips move in the axial direction relatively to the spring coil 11, so that the chips are gradually transferred to the discharge port 27.

Thus, the spring coil 11 is formed with three concave portions 30 for each turn, and the concave amount C of the concave portion 30 is larger than at least the thickness of the wire of the spring coil 11. When the is rotated, the force for transferring the cutting chips acts from the annular surface having the width corresponding to the concave amount C, so that the transfer force is enhanced even at the same rotation speed. Can be. Also, by forming the recess 30 in the spring coil 11 in this manner, the rigidity of the spring coil 11 itself is improved, so that large shavings and the like are caught during ejection, so that the spring coil 11 is deformed and the transfer force is reduced. Can be prevented. Further, as in this embodiment, the pitch of the spring coil 11 is set to the pitch E on the outlet side.
By making it larger than the above, it is possible to easily discharge the cutting chips and the scraps that have entered the inside of the spring coil 11.

[0015]

As is apparent from the above description, according to the present invention, the screw is formed into a coil shape with a spring material, and a plurality of concave portions are formed such that a part of the coil is curved inward for each turn of the coil. Is formed, and a transfer force acts on the cutting chips from the annular surface having a width corresponding to the amount of depression of the concave portion, so that the transfer capability of the cutting chips transferred by the rotation of the helical rotating body can be improved. Further, even cutting chips having a relatively large shape can be easily discharged without clogging the inside of the rotating body.

[Brief description of the drawings]

FIG. 1 is a plan view showing the entire configuration of a cutting waste discharging device according to an embodiment of the present invention.

FIG. 2 is a side view showing an entire configuration of a chip discharge device according to an embodiment of the present invention.

FIG. 3 is a sectional view taken along the line III-III in FIG. 3;

FIG. 4 is a side view of a spring coil incorporated in the chip discharge device.

FIG. 5 is a front view showing the shape of a spring coil.

FIG. 6 is a front view showing a configuration of a connecting tool for connecting a spring coil and a driving unit.

FIG. 7 is a side view showing a connection state between a connection tool and a spring coil.

FIG. 8 is a perspective view showing a configuration of a conventional screw conveyor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Cover 11 Spring coil 12 Partition wall 13 Guide plate 13 Transfer path 15 Driving part 16 Connecting tool 17 Drive shaft 18 Shaft hole 19 Connecting part 20 Bolt 21 Fixed part 22 Through hole 23 Set screw 25 Slope 26 Gutter part 30 Recess

Claims (1)

(57) [Claims] A swarf rotating device is provided in a transfer path defined by a wall so as to be rotatable, and the slewing body is rotated to transfer the swarf in the axial direction of the rotator. A cutting chip discharging device, wherein the rotating body is formed in a coil shape by a spring material, and a plurality of concave portions that are curved inward in the rotation axis direction are formed for each turn of the coil.