JP2859701B2 - Chip removal equipment for sawing machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a chip removing device for removing a chip attached to a saw blade in a sawing machine such as a band sawing machine, a hacksaw, and a circular sawing machine. Related to the device.

(Prior Art) Conventionally, a circular wire brush has been used as a chip removing device in a sawing machine. After the saw blade has been inserted by a predetermined amount relative to the tip of the wire brush, the wire brush is rotated to remove chips adhering to the saw blade. Further, in order to detect that the wire brush has reached the minimum diameter for use (the diameter of the wire brush when the wire brush needs to be replaced due to wear), the diameter of the wire brush has been directly detected by a caliper or the like.

(Problems to be Solved by the Invention) However, as described above, in the conventional chip removing device, since the wire brush is severely worn,
When the diameter of the wire brush becomes smaller due to abrasion, it is necessary to insert the saw blade relative to the tip of the wire brush each time by a predetermined amount, and the adjustment of the wire brush is troublesome. On the other hand, if chips are removed when the wire brush is not properly adjusted, chipping occurs at the blade edge of the saw blade, shortening the life of the saw blade and making it impossible to perform appropriate cutting. was there.

In addition, since the diameter of the wire brush is directly detected by a caliper or the like to determine that the diameter of the wire brush has become the minimum usable diameter, the operation is troublesome.

Therefore, an object of the present invention is to provide a chip removing device for a sawing machine that can solve the above-mentioned problems.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the conventional problems as described above, in the present invention, a chip attached to a saw blade is provided in a saw blade housing having a saw blade. A brush support member for rotatably supporting the circular wire brush to be removed is provided, and a contact member to which a peripheral edge of the wire brush can contact at a position close to the saw blade is provided, and the brush support member is used as a contact member. Approaching, and provided so as to be movable in the direction away from each other, and when the peripheral edge of the wire brush abuts against the contact member, provided so that the saw blade enters a predetermined amount relatively to the tip of the wire brush, and An urging means for urging the wire brush in a direction in which the wire brush contacts the contact member is provided.

Further, in addition to the above components, a detector is provided on the brush support member, and a sensor which is operated by the detector when the diameter of the wire brush becomes the minimum usable diameter due to wear is provided.

(Operation) In the above configuration, by rotating the wire brush in a state where the peripheral edge of the wire brush is in contact with the contact member, chips attached to the running saw blade are removed.

Even when the diameter of the wire brush is gradually reduced due to abrasion under the above-described action, the wire brush is always urged in the direction of contact with the contact member by the urging means. The contact state between the brush and the contact member is maintained. Therefore, the saw blade is in a state in which the saw blade has penetrated a predetermined amount relatively to the tip of the wire brush.

When the sensor is actuated by the detector, the wear of the wire brush increases, and the diameter of the wire brush becomes the minimum usable diameter.

(Example) Hereinafter, an example according to the present invention will be described with reference to the drawings.

Referring to FIG. 6, a band saw machine 1 as an example of a saw machine
Comprises a box-shaped base 3, a work table 5 for supporting the work material W is provided on the base 3, and the work material W is placed at a predetermined position on the work table 5. A pair of fixing vises 7a and 7b are provided for fixing. The fixing vise 7a is immovable, and the fixing vise 7b is movable in the left and right direction (the left and right direction in FIG. 6) approaching and moving away from the fixing vise 7a. The work table 5 constitutes a part of the base 3.

The base 3 is provided with a saw blade housing 11 that can swing up and down via a hinge shaft 9. In order to swing the saw blade housing 11, an elevating cylinder 13 is provided at an appropriate position on the base 3.
The piston rod 15 which can be projected upward from the housing is connected to an appropriate position of the saw blade housing 11. As a configuration for moving the saw blade housing 11 up and down with respect to the base 3, in addition to the above-described configuration, a guide post is erected on the base 3, and the saw blade housing 11 is guided by this guide post. A configuration that can be moved up and down is acceptable.

A drive wheel 19 and a driven wheel 17 are rotatably provided in the saw blade housing 11, and an endless saw blade 21 is wound around the drive and driven wheels 19 and 17.
The drive wheel 19 is linked to a rotating device (not shown). In addition, a pair of saw blade guides 25a and 25b are provided on the beam member 23 attached to the saw blade housing 11 in order to hold the saw blade 21 substantially perpendicular to the work material W supported on the work table 5. The position is adjustable. The saw blade guide 25a is immovable, and the saw blade guide 25b can move in the left and right direction, approaching and separating from the saw blade guide 25a.

With the above configuration, the work material W is fixed at a predetermined position on the work table 5 by bringing the pair of fixed vises 7a and 7b close to each other. Then, the rotating device is appropriately operated for driving, the driven wheels 19 and 17 are rotated, the band saw blade 21 is driven to travel, and the lifting cylinder 13 is appropriately operated to swing the saw blade housing 11 downward. Let it. by this,
A desired cutting process is performed by the saw blade 21 guided perpendicularly to the workpiece W through the pair of saw blade guides 25a and 25b.

The saw blade housing 11 is provided with a chip removing device 27 for removing the chips attached to the saw blade 21.

For details of the chip removing device 27, see FIGS.
Referring to the figure, the saw blade housing 11 is provided with a fixing member 29, and the fixing member 29 is provided with a casing 31. A support plate 33 is provided below the casing 31, and a brush support member 35 is provided on the support plate 33.

The brush support member 35 is provided so as to be movable in the front-rear direction (the left-right direction in FIG. 1, the right-left direction in FIG. 2, the front-back direction in FIG. 3, the front-back direction in FIG. 3, and the upper-lower direction in FIG. 4). That is, the support plate 33 is provided with a long hole 37 extending in the front-rear direction, and guide bolts 39 and 41 penetrating the long hole 37 are provided to be screwed to the brush support member 35. The brush support member 35 has a support plate 33.
Is provided, the brush support member 35 moves in the front-rear direction with a predetermined frictional force.

On the brush support member 35, a wire brush 45 is rotatably provided. More specifically, referring to FIG. 5, the brush support member 35 is provided with a rotating shaft 47 provided integrally with the wire brush 45 via a plurality of bearings 49 so as to be freely rotatable. Is integrally provided with a driven bevel gear 51. An intermediate shaft 53 is rotatably provided above the brush support member 35 via a plurality of bearings 55. A drive bevel gear 57 meshed with the driven bevel gear 51 is integrally formed on the intermediate shaft 53. It is provided. The intermediate shaft 53 is connected to a rotation shaft 61 of a drive motor 59 provided on the casing 31 via a universal joint 63.

With the above configuration, by appropriately driving the drive motor 59, the rotating shaft 61 rotates, and the universal joint
The intermediate shaft 53 rotates via 63. Therefore, the rotating shaft 47 rotates through the driving bevel gear 57 and the driven bevel gear 51, and the wire brush 45 rotates.

In the vicinity of the saw blade 21 in the support plate 33, a contact roller 65 is rotatably provided as a contact member with which the peripheral edge of the work table 45 can contact, and the wire brush 45 contacts the contact roller 65. Then, the position of the contact roller 65 is set such that the saw blade 21 enters the hair brush of the wire brush 45 by a predetermined amount relatively. Further, in order to urge the wire brush 45 in a direction in which the wire brush 45 comes into contact with the contact roller 65, a mounting bolt attached to the brush support member 35 is attached.
A spring 71 is elastically mounted between the mounting member 69 and the mounting bolt 69 attached to the fixing member 29.

Note that a wire brush 45 is used instead of the contact roller 65.
May be provided with an abutting plate against which the periphery of the abutment can be abutted.
A torsion spring may be used between the brush support member 31 and the brush support member 35.

In addition, a sensor 73 such as a limit switch or a proximity sensor is provided at a predetermined position of the support plate 33 to detect that the wire brush 45 has become the minimum usable diameter due to wear. When the diameter of the wire brush 45 reaches the minimum use diameter, the sensor 73
This is to detect that the guide bolt 39 is located at a predetermined position where the 39 is located. It is preferable to control the rotation of the drive wheel 19 to stop when a predetermined detection is made by the sensor 73. In the present embodiment, the detector is used via a guide bolt, but the detector may be any as long as it moves integrally with the wire brush 45.

The operation of the present embodiment will be described based on the above configuration.

While the band saw machine 1 is appropriately operated to perform desired cutting on the workpiece W, the contact roller 65 is
By driving the drive motor 59 appropriately and rotating the wire brush 45 in a state where the peripheral edges of the 45 are in contact with each other, chips attached to the running saw blade 21 are removed.

Even when the diameter of the wire brush 45 gradually decreases due to the abrasion under the above-described operation, the wire brush 45 is constantly pressed because the spring 71 urges the wire brush 45 in the contacting direction. The state of contact with the contact roller 65 is maintained. Therefore, the saw blade 21 is always in a state of entering the hair tip of the wire brush 45 by a predetermined amount relatively.

When the sensor 73 detects that the guide bolt 39 is located at the predetermined position, it can be understood that the wear of the wire brush 45 has increased, and the diameter of the wire brush 45 has become smaller.

According to this embodiment, even when the diameter of the wire brush 43 is reduced due to abrasion, the contact state where the wire brush 43 is in contact with the contact roller 65 is maintained. Saw blade 21 against the tip of brush 43
Are always relatively intruded by a predetermined amount.
Therefore, there is no need to adjust the wire brush 43 as in the related art, and the work efficiency is improved.

In addition, since the guide bolt 39 is detected by the sensor 73, it is known that the diameter of the wire brush 45 has become the minimum usable diameter.
It is not necessary to detect the diameter of the work, and the effect of improving the work efficiency is exhibited.

The present invention is not limited to the description of the above-described embodiment, and can be implemented in various other modes by making appropriate changes.

[Effects of the Invention] As described above, as understood from the description of the embodiments, according to the present invention, even when the diameter of the wire brush gradually decreases due to abrasion, the wire brush makes contact with the contact member. In this case, the saw blade is inserted into the tip of the wire brush by a predetermined amount so as to be kept in contact with the wire brush. Therefore, there is no need to adjust the wire brush as in the related art, and the work efficiency is improved.

Also, since the diameter of the wire brush has become the minimum usable diameter by detecting the detector by the sensor, it is not necessary for the operator to directly detect the diameter of the wire brush 45, thereby improving work efficiency. It is effective.

[Brief description of the drawings]

The drawings illustrate an embodiment according to the present invention.
The figure is a right side view of the chip removing device. FIG. 2 is a left side view of the chip removing device. FIG. 3 is a front view of the chip removing device. FIG. 4 is a plan view of a chip removing device. FIG. 5 is an enlarged view of a brush supporting device supporting a wire brush. FIG. 6 is a front view of the band saw machine. DESCRIPTION OF SYMBOLS 1 ... Band saw machine, 21 ... Saw blade 27 ... Chip removal device, 35 ... Brush support member, 39 ... Guide bolt, 45 ... Wire brush, 65 ... Contact roller, 71 ... Spring, 73 ... Sensor

Claims (2)

(57) [Claims] A saw blade housing having a saw blade is provided with a brush support member for rotatably supporting a circular wire brush for removing chips attached to the saw blade, and at a position close to the saw blade, Provide a contact member with which the peripheral edge of the wire brush can contact, and provide the brush support member so as to be movable toward and away from the contact member, and when the peripheral edge of the wire brush contacts the contact member. , Provided so that the saw blade enters a predetermined amount relatively to the tip of the wire brush,
A chip removing device for a sawing machine, further comprising an urging means for urging the wire brush in a direction in which the wire brush contacts the contact member. 2. A device according to claim 1, wherein said brush supporting member is provided with a detector, and a sensor which is actuated by said detector when the diameter of said wire brush reaches a minimum usable diameter due to wear. A chip removing device in the sawing machine according to the above.