JPH0243615Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a rotating brush device, and more specifically, to a rotating brush device for brushing off chips attached to a band saw blade in a band saw machine such as a rigid band saw machine or a horizontal band saw machine. This invention relates to a rotating brush device for

[Technical background of the invention and its problems] A rotating brush for brushing off chips adhering to the saw blade of a bandsaw machine is a consumable item, and therefore requires periodic replacement. Therefore, conventionally, a male thread is formed at the tip of the rotating shaft, and a nut is attached to and removed from this male thread.
The rotating brush is configured to be attached to and removed from the rotating shaft. Therefore, in the past, there were problems in improving work efficiency, such as nuts and tools sometimes getting lost when attaching and detaching the rotary brush, and requiring a relatively long time to attach and detach.

[Purpose of the invention] This invention was devised in view of the conventional problems as described above, and its purpose is to easily attach and detach the rotating brush from the rotating shaft without using tools. The object of the present invention is to provide a novel rotating brush device that can perform the following tasks.

[Summary of the invention] In order to achieve the above-mentioned purpose, in this invention, a rotary brush that is detachably attached to the rotary shaft or at one end of the rotary shaft is provided with a L with radial projection
A radial locking member is provided, and a flange portion provided at one end of the rotating shaft or one side of the rotating brush is provided with a large slit through which the radial protrusion of the locking member can freely pass. A locking portion that locks the protrusion is provided, and a biasing device that biases the rotary brush in a direction to separate from the rotary shaft is interposed between the rotary shaft and the rotary brush.

[Embodiment] Referring to FIG. 1, a horizontal bandsaw machine 1 is roughly composed of a box-shaped base 3 and a cutting head 5. It is supported on the base 3 so as to be able to swing vertically. A work table 9 is provided on the base 3 on which a workpiece W to be cut is placed.
A vice device 11 comprising a fixed vise 11f and a movable vise 11m capable of holding and fixing a workpiece W is installed. The cutting head 5 is provided with housing parts 13, 15, each housing part 13, 15 being connected to the beam member 1.
They are integrally connected by 7. A control box 19 is provided on the beam member 17.

The housing part 1 of the cutting head 5
A driving wheel 21 and a driven wheel 23 are rotatably installed inside the shafts 3 and 15 via shafts 25 and 27, respectively. An endless band saw blade 2 that is wound around a driving wheel 21 and a driven wheel 23
In order to easily attach and detach the drive wheel 9, the driven wheel 23 is provided so as to be movable toward and away from the drive wheel 21. Although detailed illustrations are omitted, as is well known, the movement of the driven wheel 23 is adjusted by rotating a tension handle 31 rotatably provided in the housing portion 15.

The band saw blade 29 is guided and held by the fixed guide arm 33 and the movable guide arm 35 with the cutting edge directed vertically downward, so that the horizontal band saw machine 1
In the cutting area, both guide arms 33, 35
A cut portion is formed between the two. Both guide arms 33, 35 are supported by a guide member 37 fixed to the beam member 17, and band saw blade guide devices 39, 41 are provided at the lower ends of the band saw blade guide devices 39, 41 for vertically twisting and guiding the band saw machine 29. are provided for each. The fixed guide arm 33 is a guide member 3
The movable guide arm 35 moves toward and away from the fixed guide arm 33 in order to adjust the cutting portion of the bandsaw blade 29 according to the size of the workpiece W to be cut. It is supported so that its position can be adjusted and fixed.

The cutting head 5 moves the hinge pin 7 by actuating a hydraulic cylinder 45 with a piston rod 43 in order to cut the band saw blade 29 into the workpiece W and to separate the band saw blade 29 from the workpiece W. It is configured to swing vertically around the body. That is, when pressure oil is supplied to the hydraulic cylinder 45, the cutting head 5 rises, and when the pressure oil is drained from the hydraulic cylinder 45, the cutting head 5 descends due to its own weight.

The housing portion 13 is used to brush off chips that have not adhered to the band saw blade 29 when cutting the workpiece W.
A rotating brush device 47 is provided. More specifically, a rotating shaft 49 configured to rotate in conjunction with the shaft 25 as appropriate is provided on the lower side of the housing portion 13, and a rotating brush 51 is attached to and removed from this rotating shaft 49. It is installed in a replaceable manner.

As shown in FIGS. 2 and 3, a flange portion 53 is formed at the tip of the rotating shaft 49, and a large diameter portion 55 and a small diameter portion 57 are located symmetrically on the flange portion 53. A large slit 59 formed deeply toward the center and a small slit 61 formed shallowly are formed between the large diameter portion 55 and the small diameter portion 57 which are adjacent to each other.
Further, an axial hole 63 is bored in the rotating shaft 49, and an abutment plate 65 is provided at an appropriate position in this hole 63.
A support shaft 67 equipped with a support shaft 67 is slidably fitted therein.
The support shaft 67 is pressed in a direction protruding from the hole 63 by a spring 69 such as a coil spring interposed between the support shaft 67 and the rotating shaft 49, and a notch formed in the support shaft 67 By the stopper 73 which penetrates through 71 and is fixed to the rotating shaft 49,
The support shaft 67 is prevented from being pulled out from the hole 63.

A substantially L-shaped locking member 75 is provided on one side of the rotary brush 51, which is provided with a fitting hole 77 in the center that can be fitted into the protrusion 75 of the support shaft 67. This locking member 75 is connected to the rotating shaft 49.
An axial protrusion 75A that is provided on one side of the rotating brush 51 at a position approximately equal to the diameter of the flange portion 53 and protrudes in a direction parallel to the axis of the rotating brush 51, and a tip of the axial protrusion 75A. A radially inward protrusion 75 protrudes radially inward from the section.
It is formed into a substantially L-shape by B.

The radially inward protruding portion 75B is formed by a large slit 59 of the flange portion 53 provided on the rotating shaft 49.
However, the small slit 61 is formed in such a length that it cannot pass through, and a stepped portion 75C is formed on the side where the radially inward protruding portion 75B faces the rotating brush 51.
is formed. This stepped portion 75C can engage with the small slit 61 of the flange portion 53, but
The movement in the rotational direction is caused by the small diameter portion 5 of the flange portion 53.
7.

In the above configuration, in order to attach the rotating brush 51 to the rotating shaft 49, first align the large slit 59 of the flange portion 53 formed on the rotating shaft 49 with the position of the locking member 75 of the rotating brush 51. . Next, the rotating brush 51 is brought into contact with the abutment plate 65 of the support shaft 67 and pushed forward against the bullet 69, so that the radial protrusion 75B of the locking member 75 is moved.
is caused to pass through the large slit 59. As described above, after the radially inward protruding portion 75B passes through the large slit 59, the rotating brush 51 is rotated about the rotating shaft 49, and the locking member 75 is moved through the small slit 61 of the flange portion 53. When the rotating brush 51 is placed in the correct position and the rotating brush 51 is released, the bullet 69
Due to this action, the rotating brush 51 etc. are slightly returned to the left in FIG. 3. That is, the radially inward projecting portion 75B abuts the flange portion 53, and the stepped portion 75C engages with the small slit 61.

Therefore, the rotating brush 5 relative to the rotating shaft 49
1 is prevented from coming off, and free rotation in the rotational direction is also prevented. As mentioned above, the rotating shaft 49
When the rotating shaft 49 is rotated counterclockwise in FIG. 2 after the rotating brush 51 is mounted on the rotating brush 51, the large diameter portion 55 of the flange portion 53 comes into contact with the axially protruding portion 75A of the locking member 75. Rotating brush 51
This will cause the rotation. At this time, the rotating shaft 49
Even if the machine rotates and stops repeatedly,
The rotating brush 51 does not rotate relative to the rotating shaft 49, and the rotating brush 51 does not separate from the rotating shaft 49.

When removing the rotating brush 51 from the rotating shaft 49, first, the rotating brush 51 is moved against the bullet 69.
1 into the small slit 61 of the flange portion 53.
The engagement between the locking member 75 and the stepped portion 75C is released. Next, the rotating brush 51 is rotated about the rotating shaft 49, and the locking member 75 is attached to the flange portion 53.
By locating the large slit 59 at the position of the large slit 59, the rotating brush 51 can be easily removed from the rotating shaft 49.

That is, according to this embodiment, the rotating brush 5 can be moved relative to the rotating shaft 49 without using any tools or the like.
1 can be easily attached and detached.

Note that in order to maintain the engagement between the flange portion 53 of the rotating shaft 49 and the locking member 75 of the rotating brush 51, the urging device that presses and urges the rotating brush 51 in the direction of detachment is used in the above embodiment. described a configuration in which the support shaft 67 is pressed by the bullet 69. However, instead of the above embodiment, for example, as shown in FIG. It is also possible to adopt a configuration in which the pressure is applied by pressing. Further, although detailed illustrations are omitted, contrary to the above description, a member corresponding to a contact plate and a bullet are attached to the rotating brush side in order to perform relative operation. It is also possible.

That is, the present invention is not limited to the above-described embodiments, but can be implemented in various other forms by making various changes.

[Effect of the invention] As can be understood from the explanation of the embodiments above, the gist of the invention is as stated in the claims of the utility model registration. The brush can be easily attached and detached, and the rotating brush will not fall off from the rotating shaft even if the rotating shaft is repeatedly rotated and stopped.

[Brief explanation of the drawing]

Figure 1 is a front view of a horizontal bandsaw machine implementing the present invention, Figure 2 is an enlarged view of the arrow in Figure 1, Figure 3 is a sectional view taken along the - line in Figure 2, and Figure 4. is the second
It is a sectional view showing an example. 49...Rotating axis, 59...Large slit, 53...
...Flange portion, 67... Support shaft, 75... Locking member, 61... Small slit, 69... Bullet, 65...
...Abutting plate.

Claims (1)

[Claims for Utility Model Registration] (1) A radial protrusion at the tip of the axial protrusion 75A on one side of the rotary brush 51 detachably attached to the rotary shaft 49 or at one end of the rotary shaft 49. A radial protrusion 75B of the locking member 75 is provided on the flange portion 53 provided at one end of the rotating shaft 49 or one side of the rotating brush 51. A large slit 59 that can freely pass through is provided, and a locking portion that locks the radial protrusion 75B is provided, and a biasing device that biases the rotary brush in a direction to separate from the rotary shaft 49 is attached to the rotary shaft 49. and a rotating brush 51. (2) Registration of a utility model characterized in that the biasing device consists of a support shaft that is slidably fitted in the rotation shaft in the axial direction, and a bullet interposed between the support shaft and the rotation shaft. A rotating brush device according to claim 1. (3) The rotating brush device according to claim 1, wherein the urging device is comprised of a plate-like member supported on a rotating shaft so as to be movable in the axial direction and a bullet.