JP3281462B2 - Saw machine chip removal equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sawing machine such as a horizontal band sawing machine, a vertical band sawing machine and a circular sawing machine, which removes chips attached to the saw blade when the work is cut by the saw blade. The present invention relates to an apparatus for removing chips from a sawing machine.

[0002]

2. Description of the Related Art Conventionally, for example, in a horizontal band sawing machine as a sawing machine, chips are generated when a work is cut with a saw blade. The generated chips enter the saw blade gullet,
There is a risk of sticking to this part.

As a chip removing device for removing chips attached to a saw blade, for example, Japanese Patent Application Laid-Open No.
No. 46711 is known. That is, the rotatable brush provided on the brush support member is pressed against the stopper member by the biasing force of the spring, and the amount of overlap between the saw blade and the brush is automatically adjusted.

[0004]

However, in the above-mentioned conventional chip removing device, the brush is constantly pressed against the stopper member by the biasing force of the spring. There is a problem that vibration occurs due to a change in the reaction force from the vibration.

Further, since the brush is constantly pressed against the stopper member, an extra torque of a motor for rotating the brush is required.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems by preventing the brush from vibrating when the brush is inserted into a saw blade in an appropriate amount, thereby reducing the abrasion of the brush. It is another object of the present invention to provide a sawing machine chip removing device which can reduce the torque for rotating the brush.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention rotatably supports a brush for removing chips attached to a saw blade on a saw blade housing having a saw blade. brush the support member is provided, the brush contactable stopper member at a position close to the saw blade, the brush
From the forward end position where the
Only, the approaching of the brush support member to the stopper member, provided with movable in a direction away, biasing means for biasing the brush into contact with the direction to the stopper member is provided, the brush forward end position Abuts the stopper member
And, in which the saw blade relative to the bristles of the brush is provided with a fixing means for fixing the brush support member when entering only relatively a predetermined amount.

[0008]

[0009]

By adopting the saw chip removing device of the present invention, after the stopper member is positioned at the forward end , the fixing of the brush supporting member is released to unlock the brush supporting member .
The brush supporting member is rotated by the urging force of the urging means, and the brush comes into contact with the stopper member at the forward end position , so that the brush tip enters a predetermined amount into the saw blade.

In this state, the brush support member is locked and the stopper member is moved to the retracted end position.
When the workpiece is cut by the saw blade in this state, chips generated during the cutting process adhere to the saw blade, but the chips are easily removed by the brush.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described below in detail with reference to the drawings.

Referring to FIG. 10, a horizontal band sawing machine 1 as an example of a sawing machine is provided with a box-shaped base 3, on which a work table 5 for supporting a work W is provided. In addition, a main body vise 7 including a pair of fixed vise 7a and movable vise 7b is provided for fixing the work W at a predetermined position on the work table 5. The fixed vise 7a is immovable, and the movable vise 7b is movable in the left-right direction (the left-right direction in FIG. 10) approaching and moving away from the fixed vise 7a. The work table 5 constitutes a part of the base 3.

The base 3 is provided with a saw blade housing 11 which 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, and a piston rod 15 that can project upward from the elevating cylinder 13 is attached to the saw blade housing 11. Are connected at appropriate positions. Note that the saw blade housing 11 is attached to the base 3.
In addition to the above configuration, a guide post may be erected on the base 3 and the saw blade housing 11 may be moved up and down by being guided by the guide post.

A drive wheel 17 and a driven wheel 19 are rotatably provided in the saw blade housing 11, and an endless saw blade 21 is wound around the drive and driven wheels 17, 19. The drive wheel 17 is linked to a rotating device (not shown). In order to hold the saw blade 21 substantially perpendicular to the work W supported on the work table 5, the beam member 23 attached to the saw blade housing 11 has a pair of saw blade guides 25a, 25a.
b is provided so that position adjustment is possible. The saw blade guide 25a is stationary, and the saw blade guide 25b is
5a can be moved in the left-right direction approaching or moving away from 5a.

With the above arrangement, the work W is fixed at a predetermined position on the work table 5 by bringing the pair of fixed and movable vises 7a and 7b close to each other. Then, the rotating device is appropriately operated to drive, the driven wheels 17, 19 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. As a result, the pair of saw blade guides 25
A desired cutting process is performed by the saw blade 21 guided perpendicularly to the workpiece W via a and 25b.

A saw chip removing device 27 is provided in the saw blade housing 11 to remove the chips attached to the saw blade 21. For details of the chip removing device 27, referring to FIGS. 1, 2, 3, and 4, the saw blade housing 11 is provided with one end of a fixed block 29. Has a fixed frame 31 integrated therein. The fixed frame 31 is provided with a brush support member 35 having a casing shape with the hinge pin 33 as a fulcrum so as to be swingable in the left-right direction in FIG.

A motor base 37 is attached to a lower portion of the brush support member 35 with a plurality of bolts. A drive motor 39 is provided on the motor base 37, and a gear box 4 is provided below the motor base 37.
1 is attached. In the gear box 41, as shown in FIG. 2, for example, a bevel gear is provided on the output shaft of the drive motor 39, and another bevel gear is engaged with this bevel gear. In addition, a rotatable rotating shaft 43 is mounted on the other bevel gear. For example, a wire brush 45 is fitted to the rotating shaft 43 as a circular brush, and is fixed with a tightening screw 47. A cover 47C is attached to the front of the gear box 41 (to the left in FIG. 2) so as to cover the wire brush 45.

When the drive motor 39 is driven by the above configuration, the rotation shaft 4 is driven via the output shaft and the pair of bevel gears.
The rotation is transmitted to 3. By rotating the rotation shaft 43, the wire brush 45 is rotated at a desired rotation speed.

As shown in FIGS. 1 and 3, a stopper cylinder 49 is attached to a lower portion of the front plate 11F attached to the front side of the saw blade housing 11. A spring 53 is provided in the stopper cylinder 49 to urge the piston rod 51 upward.

The piston rod 51 projects downward. One end of a link 57 is attached to the tip of the piston rod 51 with a pin 55, and the other end of the link 57 extends in the left-right direction in FIG. It is attached to one end of a rod 59. A stopper member 61 is attached to the other end (left end in FIG. 3) of the rod 59. In addition,
The rod 59 is connected to the front plate 11 via a bracket 63.
It is attached to F. In addition, the stopper cylinder 4
An upper end of the pipe 9 is connected to one end of a pipe 65, and the other end of the pipe 65 is attached to the saw blade housing 11. Moreover, the pipe 65 is connected to a hydraulic pressure source via another pipe.

With the above structure, the hydraulic pressure is supplied to the stopper cylinder 49 from the hydraulic pressure source (not shown) through the pipe 65, and the piston rod 51 is lowered in FIG. Is rotated clockwise in FIG.
1 is rotated from the retreat end position of the two-dot chain line to the forward end position of the solid line. By releasing the hydraulic pressure from the hydraulic cylinder 49, the urging force of the spring 53 allows the piston rod 5
1 rises, and the stopper member 61 is avoided from the forward end position of the solid line to the backward end position of the two-dot chain line.

The brush support member 35 is swingably provided on the fixed frame 31 with a hinge pin 33 as a fulcrum. That is, the brush support member 35 is provided so as to be movable in a direction approaching and separating from the stopper member 61.

More specifically, as shown in FIG. 1, a support plate 35 which is a part of the brush support member 35
For example, one end of a spring 67 as an urging means is attached to P, and the other end of the spring 67 is attached to a frame 35A of the brush support member 35 in FIG. Due to the urging force of the spring 67, the spring 67 is always rotated counterclockwise in FIG. 1 around the hinge pin 33 as a fulcrum.

The support frame 3 of the brush support member 35
A proximity sensor 69 is provided at the tip attached to the other end of the spring 67 in 5A. A stopper 73 is provided via a bracket 71 at a position corresponding to the front plate 11F of the saw blade housing 11 in which the proximity sensor 69 is rotated counterclockwise in FIG.

With the above configuration, when the brush support member 35 is rotated counterclockwise in FIG. 1 by the urging force of the spring 67 about the hinge pin 33 as a fulcrum, the proximity switch 69 comes into contact with the stopper 73. as a result,
The contact of the wire brush 45 with the stopper member 61 can be detected. That is, the forward end position of the wire brush 45 can be detected. When the wire brush 45 reaches the forward end position, the life of the wire brush 45 is determined.

When the wire support member 35 rotates counterclockwise in FIG. 1 and the wire brush 45 is positioned on the saw blade 21, it is necessary to fix the wire support member 35 so that the wire brush 45 does not vibrate. . A fixing means 75 for the wire support member 35 is provided on the fixed frame 31.

More specifically, as shown in FIG. 4, a brake plate 77 is interposed between the left side of the brush support member 35 and the hinge pin 33. A lock cylinder 79 is provided in the fixed frame 31. First and second cylinder chambers 79A and 79B are formed in the lock cylinder 79 with a piston 79P integrated with the tip of the hinge pin 33 as a boundary. Have been. In addition, a spring 81 is provided in the second cylinder chamber 79B so as to urge leftward in FIG. One ends of pipes 83 and 85 are connected to the first and second cylinder chambers 79A and 79B, and the other ends of the pipes 83 and 85 are connected to a hydraulic source (not shown).

With the above configuration, when hydraulic pressure is supplied from the hydraulic pressure source to the first cylinder chamber 79A via the pipe 83, the piston 79P slides rightward in FIG. 33 is moved rightward, the brake plate 77 operates and the hinge pin 33 is moved.
And the brush support member 35 is fixed to the fixed frame 31.
Will be locked.

Next, the overall operation of the chip removing device will be described with reference to the flowchart of FIG. 5. In step S1, the piston rod 51 is operated by the operation of the stopper cylinder 49.
Is lowered, the stopper member 61 is positioned at the forward end position. In step S2, the lock cylinder 79
Is unlocked, the spring 6 is released in step S3.
The brush support member 35 rotates counterclockwise around the hinge pin 33 as a fulcrum in FIG. 1 by the urging force of 7, and the wire brush 45 contacts the stopper member 61.

When the wire brush 45 contacts the stopper member 61, the lock cylinder 79 is locked in step S4. Next, in step S5, the stopper cylinder 49
Causes the stopper member 61 to move to the retracted end position. In step S6, when the limit switch 69 provided on the brush supporting member 35 is brought into contact with the dog 73 and it is detected that the brush supporting member 35 has reached the forward end position, the wire brush 45 is notified that its life has expired. An alarm is issued in step S7.

If the brush support member 35 has not reached the forward end position in step S6, it is determined in step S8 whether or not the position of the wire brush 45 is to be adjusted. Return, and if no adjustment is made, the process ends.

As described above, the saw blade 21 and the wire brush 45
Since the overlap amount is performed other than during cutting, the overlap amount can be automatically adjusted, and a stable overlap amount can always be obtained. Since the movement direction of the wire brush 45 is fixed (locked) after the adjustment, it is possible to prevent a sudden force acting in the movement direction of the wire brush 45, for example, vibration due to a reaction force from the saw blade 21.

Further, since the stopper member 61 is made of a surface, the stopper member 61 is pressed with a strong force, and is moved to the retracted end position after the adjustment of the stopper member 61. Therefore, the stopper member 61 does not contact the wire brush 45. , The torque of the drive motor 39 is small and the power is saved.
5 can be reduced, and the life can be prolonged.

FIGS. 6, 7, 8 and 9 show another embodiment. 6 to 9, the same components as those in FIGS. 1 to 4 of the above-described embodiment are denoted by the same reference numerals, and only different configurations will be described.

6 to 8, the stopper cylinder 4
9 is connected to the link 57 via the arm member 87, and the operation is the same as the operation of the above-described embodiment, and the description is omitted.

In order to detect the forward end position of the wire brush 45, a proximity switch 69 and a stopper 73 are attached to a support frame 35B of the brush support member 35 as shown in FIGS. is there.

When the brush support member 35 is rotated counterclockwise in FIG. 6 with the hinge pin 33 as a fulcrum, the stopper 73 abuts against the lower surface of the fixed block 29 so that the proximity sensor 67 supports the brush. The forward end position of the wire brush 45 is detected via the member 35.

The fixing block 29 is provided with fixing means 75 for fixing the brush supporting member 35. More specifically, the lock cylinder 79
Is provided. The lock cylinder 79 has first and second cylinder chambers 79A, 79A with a piston 79P as a boundary.
B is formed, and a piston rod 89 is integrated with the piston 79P. The piston rod 89 projects rightward in FIG. 9, and is provided with a brake plate 77 via the brush support member 35.

With the above configuration, when hydraulic pressure is supplied to the first cylinder chamber 79A, the piston rod 89 slides to the left in FIG.
Works, and the brush support member 35 is fixed (locked). By supplying the hydraulic pressure to the second cylinder chamber 79B, the brush support member 35 is unlocked.

In another embodiment shown in FIGS.
The structure of the stopper cylinder 49, the proximity sensor 69,
Although there are some differences in the structure of the stopper 73 and the fixing means 75, since there is essentially no difference from the above-described embodiment, the description of the whole operation and effects will be omitted.

FIG. 11 shows another embodiment in which the stopper 61 is moved forward and backward, and the brush support member 35 is locked and unlocked by one cylinder. In FIG. 11, the same parts as those in the above-described embodiment are denoted by the same reference numerals and described.

In FIG. 11, a fixed block 91 is mounted on the upper part of the saw blade housing 11, and the fixed block 91 is provided with an upper part of the brush supporting member 35 via a spring 67. That is, the brush support member 35 is rotated counterclockwise in FIG. 11 with respect to the fixed block 91 by the urging force of the spring 67.

A fixed block 29 is provided on the front plate 11F of the saw blade housing 11.
And the fixed frame 3 integrated with the brush support member 35
1 is attached by a hinge pin 33.

The front plate 11F of the saw blade housing 11 is provided with a cylinder 93.
The piston rod 95 attached to the projection is vertically projected. A support frame 11B is provided on the front plate 11F as shown in FIG.
The support frame 11B is provided with a rod 97 extending vertically, and a lower end of the rod 97 is provided with a stopper member 61.

Further, the plate 9 is provided on the upper end of the rod 97.
9 is provided, and a spring 101 is interposed between the plate 99 and the support frame 11B. A hinge pin 103 is provided at one end of the fixed frame 31.
, One end of the L-shaped arm 105 is pivotally supported.

With the above configuration, when the piston rod 95 is lowered from the state shown in FIG. 11, the arm 105 rotates clockwise in FIG. 11 about the hinge pin 103 as a fulcrum, and the unlocked state becomes the locked state. As the piston rod 95 descends, the plate 99 descends against the urging force of the spring 101, and the rod 97 also descends to position the stopper member 61 at the forward end position.

Next, when the piston rod 95 is raised, the stopper member 61 is raised to be gradually positioned at the retracted end position shown in FIG. 11, and the arm 105 is bent and the arm 105 is bent from the lock portion 33P of the hinge pin 33. It will be unlocked away.

The timing for adjusting the wire brush 45 is adjusted every one cut of the product or every several cuts. In this case, the adjustment is made using the ON signal of the ascending solenoid of the saw blade 21. The number of cuts at that time can be set arbitrarily. The cutting area is set to NC
The calculation may be performed by the device, and the adjustment may be performed when the folding cross-sectional area exceeds an arbitrarily set folding area. The cutting area at that time is the saw speed,
It may be automatically set by the NC device according to the cutting rate and material. Further, the adjustment may be performed at an arbitrary cycle.

As shown in FIG. 12A, for example, as shown in FIG. 12A, when the wire brush 45 is worn and its diameter is reduced, the stopper member 61 uses the hinge pin 107 as a fulcrum to support the spring. 109
As shown in FIG. 12B, the urging force turns clockwise and the limit switch 111 is turned on. With this signal, an adjustment sequence of the wire brush 45 is entered, the stopper member 61 is returned in the rotating direction, and the stopper member 61 is advanced and locked until the limit switch 111 is turned off.

Further, as a fixing means for locking the wire brush 45, instead of fixing by the lock, as shown in FIG.
5 may be attached to the saw blade housing 11, and the tip of the piston rod 117 attached to the cylinder 115 may be replaced by a damper attached to the brush support member 35.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. The stopper member 61 for positioning the wire brush 45 may not have a shape to be received on the surface. In addition to horizontal band sawing machines, vertical band sawing machines,
The present invention can also be applied to a sawing machine that removes chips attached to a saw blade with a wire brush 45 such as a circular sawing machine. In addition, wire brush 4
The drive source for rotating 5 may be other than the drive motor. When automatically adjusting the amount of overlap between the wire brush 45 and the saw blade 21, the adjustment may be performed after the rotation of the wire brush 45 is stopped. Although the brush has been described with the wire brush 45, other brushes such as a nylon brush may be used.

[0052]

As will be understood from the above description of the embodiment, according to the present invention, the brush is inserted into the saw blade in an appropriate amount since the structure is as described in the claims. In this state, it is possible to prevent the brush from vibrating and reduce the wear of the brush. Furthermore, it is possible to reduce the torque for rotating the brush to remove chips , as described above.
It is possible to solve the conventional problem as described above .

[Brief description of the drawings]

FIG. 1 is a right side view of a chip removing device in a sawing machine according to an embodiment of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is an explanatory view of a portion for positioning a stopper member at a forward end position and a backward end position.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a flowchart illustrating the operation of the chip removing device of the present invention.

FIG. 6 is a right side view showing another embodiment of the chip removing device.

FIG. 7 is a front view of FIG.

FIG. 8 is an explanatory diagram of a portion for positioning a stopper member at a forward end position and a backward end position.

FIG. 9 is a plan view of FIG.

FIG. 10 is a front view of a horizontal band saw machine according to an embodiment provided with the chip removing device of the present invention.

FIG. 11 is an explanatory view of another embodiment in which advance and retreat of the stopper member and locking of the brush support member are performed at the same time.

FIG. 12 is an explanatory diagram for detecting wear of a wire brush.

FIG. 13 is an explanatory view of another embodiment for fixing a brush support member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Horizontal band saw machine (saw machine) 11 Saw blade housing 21 Saw blade 27 Chip removal device 35 Brush support member 45 Wire brush (brush) 61 Stopper member 67 Spring (biasing means) 75 Fixing means

Claims (1)

(57) [Claims] 1. A saw blade housing with a saw blade (21).
(11), wherein the saw blade (21) brush support member for rotatably supporting the brush (45) for removing chips adhered to (35) is provided, proximate said to saw blade (21) located The stopper member (6 ) with which the brush (45) can contact
1) from the forward end position where the brush (45) contacts
The brush supporting member (3) is provided so as to be retractable to the retracted end position.
5) close to the stopper member (61), provided with movable in a direction away, providing a biasing means for biasing the brush (45) to said stopper member (61) abuts in a direction, the brush (45) is the strike at the forward end position.
Tsu contact path to the member (61) This, fixing means for fixing the brush supporting member (35) when entering only the saw blade (21) is relatively a predetermined amount relative to the bristles of the brush (45) A chip removing device for a sawing machine, comprising: