JPH09183016A - Device for removing chip from sawing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sawing-machine chip removing device which prevents degradation of chip-removing ability due to the wear of a brush and can surely remove chips on each side of a saw blade. SOLUTION: Chips clinging to a saw blade BS are removed by rotating a wire brush 39 which has wires bound into a cylindrical shape and using the ends of the wires. Since the rotating shaft 51 of the wire brush 39 is provided along a direction perpendicular to the saw blade BS from the saw side, at two positions the wire ends formed into a ring shape remove the chips on the saw blade BS in opposite directions. A support member 31 by which the wire brush 39 is freely rotationally supported is moved by an energizing means 53 and so the ends of the wires 71 are constantly made to abut to an abutting member 37. The support member 31 moves toward the saw blade BS as the wires wear, and is detected by a detection means 65 when approaching within a predetermined interval. The wire brush is replaced by rotating the support member 31 and separating the brush from the saw blade BS.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip removing device for a saw.

[0002]

2. Description of the Related Art Conventionally, a chip removing device for a saw machine such as a band saw machine or a circular saw machine is described in, for example, JP-A-5-104327 and JP-A-4-46711. There is something.

Referring to FIGS. 6 (A) and 6 (B), a wire brush 101 used in the chip removing device described in the above-mentioned publication has a large number of wires 103 made of hard steel wire radially. Two circular side plates 105, 10
5 scissors, the center of this side plate 105, 105 eyelet 1
It is stopped by 07.

Referring to FIG. 7, the wire brush 101 as described above is attached to a predetermined position of the saw, and the wire 10 is attached.
The chips attached to the saw blade BS are removed by rotating the tip of the saw blade 3 with a predetermined amount applied to the saw blade.

[0005]

However, in such a conventional technique, since the wire brush 101 is heavily worn, the peripheral speed is reduced as the diameter of the wire brush 101 is reduced due to the wear. That is, the peripheral speed V is V = π
Since the diameter is more proportional to the diameter D than the DN, the peripheral speed V decreases when the diameter D decreases due to the wear of the wire 103, and thus the chip removing ability of the wire brush 101 also decreases. Here, N represents the number of revolutions per minute.

Further, referring to FIG. 7, since the chips are removed from the saw blade BS from one direction (the direction of the arrow in FIG. 7), the chips are attached to the set blade on the slip-off side in the rotating direction of the wire brush 101. It is not possible to completely remove the cutting chips 109 that are produced. Therefore, there is a problem that chipping occurs on the side of the clam blade in one direction, resulting in bending and the like, which greatly affects the cutting performance.

As a means for solving this problem, as shown in FIG.
The structure shown in (B) is conceivable. That is, by using the two wire brushes 101 shown in FIG. 6, the drive motor 115 via the chain belt 111 and the gear 113.
Thus, the respective rotation directions are opposite to each other.
With this configuration, it is possible to remove the chips on both sides of the set edge, but as described above, the reduction of the chip removal capability due to the wear of the wire brush 101 cannot be avoided.

The object of the present invention has been made by paying attention to the above-mentioned conventional techniques, and it is possible to prevent the chip removing ability from being deteriorated due to the abrasion of the brush and to make sure that the chips on both sides of the saw blade are removed. Another object of the present invention is to provide a chip removing device in a saw machine that can remove the chips.

[0009]

In order to achieve the above object, a chip removing device for a saw machine according to the first aspect of the present invention rotates a chip attached to a rotating traveling saw blade by a drive motor. A device for removing chips in a saw machine for removing with a brush, arranging the wire rods of the brush in a cylindrical shape around the rotation axis of the brush and bundling the rotation axis from the blade side with respect to the saw blade. The rotary shaft is provided so as to be orthogonal to each other, and the rotary shaft is provided so that the tip of the wire is in contact with the saw blade for a predetermined length.

Therefore, the cutting powder adhering to the saw blade that rotates to cut the work is removed at the tip of the wire by rotating the brush in which the wire is bundled in a cylindrical shape. At this time, since the rotation axis of the brush is provided in a direction orthogonal to the saw blade from the blade side of the saw blade, the tip of the cylindrical wire rod, that is, the tip of the ring-shaped wire rod is circumferentially wound. Remove the saw blade chips in two opposite directions.

According to a second aspect of the present invention, there is provided a chip removing device for a saw machine, comprising: a supporting member which supports the rotating shaft of the brush according to the first aspect of the present invention and which is provided so as to be able to approach and separate from the saw blade. It is characterized in that it comprises an urging means for urging the supporting member in the saw blade direction, and an abutting member for determining the tip position of the wire of the brush.

Therefore, since the supporting member that rotatably supports the brush moves until the tip of the wire comes into contact with the abutting member by the biasing means, the tip of the wire always comes into contact with the abutting member. . As a result, the length of the tip of the wire rod on the saw blade is always kept constant.

According to a third aspect of the invention, there is provided a chip removing device for a saw machine, comprising a detecting means for detecting that the distance between the supporting member and the abutting member is equal to or less than a predetermined value. It is characterized by that.

Therefore, the support member moves in the saw blade direction due to wear of the tip of the wire rod due to the chip removing work, and the detection means detects when the saw blade approaches the saw blade within a predetermined interval. You can know that the wear of the has reached the limit.

According to a fourth aspect of the present invention, there is provided a chip removing device for a saw machine, wherein the supporting member according to the second or third aspect is provided rotatably in the front direction of the saw blade with respect to the main body of the saw machine. In addition, the lock means is provided for locking the brush at the operating position.

Therefore, the supporting member can freely move toward and away from the saw blade at a predetermined position during the chip removing operation.
When replacing the brush, the support member can be rotated to separate from the saw blade, and the brush can be replaced safely and easily.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 5 shows a rigid band saw machine 1 as an example of a saw machine. In this rigid band saw machine 1, a box-shaped base 3 is used as a base, and the base 3 projects to the right in FIG. 5 and a protruding frame 5 and to the front (in the direction orthogonal to the paper surface in FIG. 5). The support plate 7 is integrally provided.

A guide rail (not shown) extending in the left-right direction is provided on the front side of the protruding frame 5. On the guide rail, a rigid cutting head 9 for cutting the work W at the cutting position is provided.
It is provided so as to be movable in the left-right direction by driving the self-propelled motor 11.

The cutting head 9 has a drive wheel 15 which is rotationally driven by a drive wheel motor 13.
And a driven wheel 17 which is rotatable. An endless saw blade BS is wound around the drive wheel 15 and the driven wheel 17.

At the rear portion of the base 3 (on the other side in the direction orthogonal to the paper surface in FIG. 5), a rear material feeding table 19 that supports the work W movably in the front-rear direction at the height position of the pass line.
Are provided integrally. This rear material sending table 19
Includes a large number of rotatable support rollers 21 in the front-rear direction.

Although not shown, a front material feeding table for supporting the work W movably in the front-rear direction at the height of the pass line is integrally provided on the front part of the base 3 (front side in the direction perpendicular to the paper surface in FIG. 5). It is provided in.

On the other side of the cutting position in the material feeding direction, a front material feeding vise device 23 for nipping and feeding the work W and discharging it is provided so as to be movable in the front-rear direction. Further, on the front side of the cutting position in the material feeding direction, a rear material feeding vise device 25 for nipping and feeding the work W is provided so as to be movable in the front-rear direction.

A pair of vise guides 27 for movably supporting the front material feeding vise device 23 and the rear material feeding vise device 25 in the front-rear direction are provided on the left side of the base 3.

With the above construction, the material feeding and positioning of the work W is performed by the front material feeding vice device 23 which has been previously brought close to the cutting position after the material W is fed by the rear material feeding vice device 25. While sandwiching W, the rear material feeding vise device 25 is unclamped. Then, the front material feeding vise device 25 is moved forward by a driving means (not shown) to feed and position the work W at a predetermined position.

In order to cut the work W thus fed and positioned, the drive wheel motor 13 rotationally drives the drive wheel 15 to rotate the saw blade BS, and the self-propelled motor is driven. By driving 11 the cutting head 9 is moved to the left in FIG.

Next, a chip removing device 29 according to the present invention.
Will be described.

Referring to FIGS. 1A and 1B, a support bracket 31 as a support member is attached by a bolt 33 in a state in which the support bracket 31 as a support member protrudes forward, for example, in the vicinity of the drive wheel 15 on the front surface of the cutting head 9. Has been.

An arm 35 is provided from near the mounting portion of the support bracket 31 to near the saw blade BS, and an abutting member 37 is provided at the tip of the arm 35. The contact member 37 determines the length of the tip of the wire brush 39 which contacts the saw blade BS when the wire brush 39 as a brush whose details will be described later contacts.

At the tip portion of the support bracket 31, the support arm 41 is in the horizontal plane (FIG.
It is provided rotatably in the front-back direction in a plane parallel to the middle paper surface). A pair of guide posts 45, 45 are vertically provided near the tip of the support arm 41,
Move along this guide post 45, 45 Bracket 4
7 is movably provided.

A brush drive motor 49 is attached to the moving bracket 47 with the rotary shaft 51 facing the saw blade BS in a direction orthogonal to the saw blade BS. A wire brush 39 is replaceably attached to the tip of the rotary shaft 51.

The moving bracket 47 is moved in the saw blade BS direction (in FIG. 1) by the spring 53 as an urging means when the chip removing device is in operation (the state shown in FIG. 1, which is hereinafter simply referred to as "in operation"). The tip end of the wire brush 39 is urged in the right direction).
The brush drive motor 49 is urged toward the saw blade BS until it comes into contact with.

Referring to FIGS. 3 and 4, a metal bearing 55 is provided between the support arm 41 and the support bracket 31.
Is provided so that the support arm 41 can smoothly rotate.

The support arm 41 is fixed to a predetermined position (position shown in FIG. 1) by a locking means such as an index plunger 57 shown in FIG. 4 during operation. That is, the nose 59 of the index plunger 57 is projected by the spring (not shown), and the nose 59 is fitted into the hole 61 provided at the predetermined position of the support bracket 31 to lock the support arm 41.

When the lock is released, the knob 6 provided on the upper end of the index plunger 57 is used.
3 and pull the nose 59 out of the hole 61. Therefore, when replacing the saw blade BS, or the wire brush 3
9 When replacing, the work is performed by releasing the lock and rotating the support arm 41 forward.

Referring again to FIG. 1, the support arm 41 is provided with a detector 67 of a limit switch 65 as a detecting means projecting on the moving bracket 47 side. On the other hand, the moving bracket 47 is provided with a dog portion 69 that comes into contact with the detector 67 and turns on the limit switch 65 when the spring 53 moves a predetermined amount.

Referring to FIGS. 2A and 2B, the wire brush 39 includes a wire 71 made of a hard steel wire as a wire material of the brush, and a set of an outer cup member 73 and an inner cup member having different radii. It is sandwiched by 75 and fixed by eyelets 77. Therefore, the wire 71 is in a state of being planted in a ring shape, and at the time of operation, the two positions of the wire 71 on the circumference come into contact with each other on the blade side of the saw blade BS.

Next, with reference to FIG. 1, a chip removing operation by the chip removing device 29 configured as described above will be described.

The wire brush 39 is attached to the rotary shaft 51 of the brush drive motor 49 with the support arm 41 opened forward (in the direction of arrow A in FIG. 1B) about the fulcrum shaft 43. At this time, since the moving bracket 47 is moved to the movement limit by the spring 53, the detector 67 is in the state of turning on the limit switch 65 by the dog portion 69 of the moving bracket 47.

Then, the support arm 41 is rotated around the fulcrum shaft 43 (in the direction of arrow B in FIG. 1 (B)) to be set. At this time, the tip of the wire brush 39 is attached to the support bracket 3.
Since it abuts on the abutting member 37 provided in No. 1, the tip length of the wire 71 applied to the saw blade BS is set to the distance H between the surface of the abutting member 37 and the blade tip of the saw blade BS. Along with this, the moving bracket 47 moves in the direction away from the saw blade BS against the restoring force of the spring 53, so that the detector 67 separates from the dog portion 69 of the moving bracket 47 and turns off the limit switch 65.

In this state, when the brush drive motor 49 is rotationally driven, the wire 71 of the ring-shaped wire brush 39 removes the cutting powder of the saw blade BS at two opposite positions (see FIG. 2B). Will be removed.

With the operation of the chip removing device 29, the tip of the wire 71 of the wire brush 39 is gradually worn and shortened, but the urging force of the spring 53 moves the moving bracket 47 in the direction of the saw blade BS. The tip of the wire 71 always contacts the contact member 37.

Furthermore, when the wire 71 becomes shorter, the moving bracket 47 moves, and the detector 67 moves the moving bracket 4.
Since the limit switch 65 is turned on by contacting the dog portion 69 of No. 7, the worker stops the work and replaces the wire brush 39.

From the above results, since the saw blade BS is cleaned in the opposite directions of the ring-shaped wire brush 39, the chips adhering to both sides of the left and right set blades can be reliably removed.

In addition, the wire 71 of the wire brush 39
Since the moving bracket 47 is biased by the spring 53 so that the tip of the blade always contacts the contact member 37, the saw blade B
The length of the tip of the wire 71 that contacts S is always kept constant, and stable chip removal can be performed.

Further, when the tip of the wire 71 is worn by a predetermined amount or more, the limit switch 65 is turned on by the movement of the moving bracket 47, so the wire brush 39
It is possible to automatically and surely know the replacement time of.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes. For example, in the above-described embodiment, the chip removing device 29 according to the present invention
The present invention is applied to the rigid band saw machine 1 as a saw machine, but the present invention is not limited to this, and may be similarly applied to a horizontal band saw machine and a circular saw machine.

Further, in the above-described embodiment, the wire 71 made of hard steel wire is used as the wire material, but the wire 71 is not limited to this, and the same effect can be obtained by using a wire made of hard plastic, for example.

[0049]

As described above, in the chip removing apparatus for a saw according to the invention of claim 1, the wire adhered to the rotating saw blade for cutting the work is bundled into a cylindrical shape. When rotating the brush and removing it at the tip of the wire rod, since the rotation axis of the brush is provided in the direction orthogonal to the saw blade from the blade side of the saw blade, the tip of the cylindrical wire rod, that is, Saw blade chips are removed in two opposite directions at the tip of the wire formed in a ring shape. As a result, the chips adhering to both sides of the saw blade can be reliably removed, so that the cutting ability of the saw blade can be prevented from deteriorating due to the adhering chips.

In the chip removing device for the saw according to the second aspect of the present invention, the support member that rotatably supports the brush moves until the tip of the wire comes into contact with the contact member by the biasing means. The tip of the wire is always in contact with the contact member. As a result, the length of the tip portion of the wire applied to the saw blade can always be kept constant, so that stable chip removal can always be performed.

In the chip removing device for the saw according to the third aspect of the present invention, the support member moves in the saw blade direction due to wear of the tip of the wire rod due to the chip removing operation, and when the saw blade approaches the saw blade within a predetermined interval. Since the detection means detects, the operator can know that the wear of the wire rod of the brush has reached the limit. As a result, it is possible to reliably and easily know the time when the cutting process is stopped and the brush is replaced, so that the chips can be reliably removed.

Further, in the chip removing device for the saw according to the invention of claim 4, the supporting member can be moved toward and away from the saw blade at a predetermined position during the chip removing operation, but when the brush is replaced, the supporting member can be moved. By rotating the brush, the brush can be separated from the saw blade and the brush can be replaced safely and easily.

[Brief description of the drawings]

1 (A) and 1 (B) are a side view and a plan view showing a chip removing device in a saw according to the present invention.

2A and 2B are a cross-sectional view and a bottom view showing a brush used in the chip removing device in the saw machine according to the present invention.

FIG. 3 is a plan view showing a mounting state of a support bracket and a support arm.

FIG. 4 is a sectional view taken along the line IV-IV in FIG.

FIG. 5 is a front view showing the whole of a rigid band saw machine as a saw machine.

6 (A) and 6 (B) are a front view and a cross-sectional view showing a brush used in a chip removing device in a conventional sawing machine.

FIG. 7 is a cross-sectional view showing a state of removing chips from a saw blade by a chip removing device in a conventional saw machine.

8 (A) and 8 (B) are explanatory views showing another example of a chip removing device in a conventional saw machine.

[Explanation of symbols]

 1 Saw Blade 29 Chip Removal Device 31 Support Bracket (Support Member) 37 Abutment Member 39 Wire Brush (Brush) 49 Drive Motor for Brush 51 Rotating Shaft 53 Spring (Biasing Means) 57 Index Plunger (Locking Means) 65 Limit Switch (detection means) 69 Dog part (detection means) 71 Wire (wire material) BS Saw blade

Claims (4)

[Claims] 1. A chip removing device in a saw machine for removing chips adhering to a rotating saw blade by a brush rotationally driven by a drive motor, wherein a wire rod of the brush is centered around a rotating shaft of the brush. Are arranged in a cylindrical shape to be bundled, the rotation shaft is provided in a direction orthogonal to the saw blade from the blade side, and the rotation shaft is arranged so that the tip of the wire rod contacts the saw blade for a predetermined length. A chip removing device for a saw machine, which is characterized by being provided. 2. A support member that supports the rotating shaft of the brush and is provided so as to be able to approach and separate from the saw blade, and a biasing unit that biases the support member in the saw blade direction, The chip removing device for a saw machine according to claim 1, further comprising: an abutting member that determines a tip position of the wire rod of the brush. 3. A chip removing device for a saw machine according to claim 2, further comprising detection means for detecting that a distance between the support member and the contact member is equal to or less than a predetermined value. . 4. The supporting member is provided rotatably in the front direction of the saw blade with respect to the main body of the saw board, and is provided with locking means for locking the brush in an operating position. 4. A chip removing device for a saw machine according to claim 2.