JP5580070B2 - Chip removal device for band saw machine - Google Patents

Description

  The present invention relates to a chip removing device for removing chips adhering to a band saw blade in a band saw machine such as a vertical band saw machine or a horizontal band saw machine. More specifically, the present invention removes the chip from the band saw blade. It is related with the chip removal apparatus which can suppress that the rotating brush for a large bound in the direction which leaves | separates from a band saw blade.

  When a metal material is cut by a band saw blade, chips may adhere to the tooth tip of the saw tooth in the band saw blade to form a constituent blade tip. When this constituent cutting edge is generated, the cutting surface becomes rough, and the constituent cutting edge is repeatedly dropped from the tooth tip, and in some cases, the tip may be chipped by impact. Therefore, the chips adhering to the band saw blade are removed by a rotating brush that rotates in a direction orthogonal to the traveling direction of the band saw blade (see, for example, Patent Document 1).

JP-A-9-272014

  The configuration described in Patent Document 1 maintains the rotation direction of a rotating brush rotated by a motor in a direction perpendicular to the traveling direction with respect to a band saw blade that rotates and travels in one direction. Is pressed in the direction of the band saw blade to remove chips adhering to the sawtooth of the band saw blade. According to this configuration, it is desirable that the chips adhering to the tooth tip of the saw blade can be removed.

  However, the height of the large number of saw teeth and the pitch of each saw tooth in the band saw blade are not always constant, and the positional relationship between the straight teeth and the left and right set teeth is not constant, so the wear of the rotary brush is not necessarily constant. For example, it may be unevenly worn in a polygonal shape. Therefore, when removing the chips adhering to the band saw blade with the rotary brush, the rotary brush approaches or separates from the band saw blade (the overlap amount of the rotary brush with respect to the band saw blade increases or decreases). The rotary brush may bounce in a direction away from the band saw blade due to interference between the rotary brush and the band saw blade.

  As described above, when the rotating brush bounces greatly, the rotating brush sometimes separates from the band saw blade, and the removal of chips may be insufficient. Therefore, there has been a demand for a chip removing device that can prevent the rotating brush from bouncing away from the band saw blade.

The present invention has been made in view of the problems as described above, and is a chip removing device in a band saw machine, and a biasing means for biasing a brush rotated by a motor in a band saw blade direction in the band saw machine; The movement of the brush in the band saw blade direction is restricted, and the band saw blade interferes with the band saw blade due to interference between the band saw blade and a regulating member for always maintaining an overlap amount between the band saw blade and the brush. A buffer device for suppressing the bounce of the brush in the direction of separating, and the urging means is provided with a motor support member integrally mounted with the motor, and rotatably provided on the motor support member. The shock absorber is provided in a shock absorber support member provided separately from the brush support member. And the brush from the band saw blade is characterized in that are provided substantially parallel to the direction of moving away.

Further, it is a chip removing device for a band saw machine, which regulates the movement of the brush in the band saw blade direction by urging means for urging the brush rotated by the motor in the band saw blade direction of the band saw machine. In order to prevent the brush from bouncing in a direction away from the band saw blade due to interference with the band saw blade and a regulating member for always maintaining an appropriate amount of overlap between the band saw blade and the brush. The urging means and the shock absorber are rotatably provided on the motor support member and the motor support member, and the brush is rotatably supported. They are provided adjacent to each other between the brush support members.

  According to the present invention, the shock absorber for suppressing the bounce of the brush in the direction away from the band saw blade is provided. Therefore, the vibration of the brush in the direction approaching and separating from the band saw blade is separated. It is possible to effectively suppress the vibration in the direction to be performed. Therefore, the brush does not separate from the band saw blade, and the chips from the band saw blade can be removed more reliably.

It is explanatory drawing of the whole structure of the chip removal apparatus which concerns on the 1st Embodiment of this invention. It is explanatory drawing of the part of the elastic member in the chip removal apparatus which concerns on 1st Embodiment of this invention. It is explanatory drawing of the part of the buffering device in the chip removal apparatus which concerns on 1st Embodiment of this invention. It is explanatory drawing of the chip removal apparatus which concerns on 2nd Embodiment.

  Referring to FIG. 1, a chip removing device 1 according to an embodiment of the present invention is mounted on a main body frame 3 in a band saw machine (the entire configuration of the band saw machine is not shown). More specifically, the chip removing device 1 is provided to remove chips adhering to the band saw blade 5 at a position close to the drive wheel (or driven wheel) 7 around which the band saw blade 5 is wound. Yes.

  That is, the chip removing device 1 is provided with a motor 11 for rotating a brush (rotating brush) 9 for removing chips adhering to the band saw blade 5, and this motor 11 is integrally attached. An L-shaped motor support member 13 is detachably attached to the main body frame 3 with a fixture such as a mounting bolt. The motor support member 13 is rotatably provided with a brush support member 15 that rotatably supports the brush 9.

  More specifically, an L-shaped bearing housing 17 is integrally attached to the brush support member 15, and an intermediate shaft 19 and a bearing housing that are rotatably mounted on the base end side of the bearing housing 17. A rotating shaft 21 that is rotatably mounted on the tip end side of 17 is interlocked and connected via a bevel gear 23. The brush 9 is attached to the tip of the rotating shaft 21 by a fixture 25 such as a nut so as to be attachable / detachable. The intermediate shaft 19 is provided long in a direction orthogonal to the traveling direction of the band saw blade 5, and the rotating shaft 21 is provided in parallel with the traveling direction of the band saw blade 5. Further, a scattering prevention cover 27 is attached to the tip of the bearing housing 17 to prevent the chips removed by the brush 9 from scattering to the surroundings. A handle 29 for rotating the brush support member 15 with respect to the motor support member 13 is attached.

  The output shaft 31 and the intermediate shaft 19 of the motor 11 are arranged in the same plane, and the output shaft 31 and the intermediate shaft 19 are interlocked and connected via a universal joint 33. The rotation of the brush support member 15 with respect to the motor support member 13 is performed by supporting a rotation shaft 35 provided in the brush support member 15 corresponding to the universal joint 33 by a bearing 37 provided in the motor support member 13. Is performed in the configuration described above. The rotation direction of the brush support member 15 about the rotation shaft 35 is the direction in which the brush 9 approaches and separates from the band saw blade 5, that is, the direction in which the brush 9 is perpendicular to the paper surface in FIG. The direction to move to. The rotation direction of the brush 9 driven by the motor 11 is a direction in which chips are removed from the inside of the loop-shaped band saw blade 5 to the outside.

  When the chips attached to the band saw blade 5 are removed by the brush 9, the brush 9 gradually wears. Therefore, in order to detect the wear limit of the brush 9, a fan-shaped detected member 39 is provided on the rotating shaft 35. The motor support member 13 is provided with an appropriate sensor 41 for detecting the detected member 39. Therefore, when the rotation shaft 35 gradually rotates and the detected member 39 is displaced from the position corresponding to the sensor 41, and the detected member 39 cannot be detected by the sensor 41, the brush 9 is worn. It can be detected that the limit has been reached.

  In order to press and urge the brush 9 in the direction of the band saw blade 5, an elastic member 43 such as a coil spring is provided between the motor support member 13 and the brush support member 15 as an example of urging means. Is stretched. When the brush 9 is always urged in the direction of the band saw blade 5, the elastic member 43 is positioned closer to the band saw blade 5 than the rotary shaft 35, as shown in FIG. . Then, when the brush support member 15 is greatly rotated in the clockwise direction in FIG. 2 in order to hold the handle 29 and replace the brush 9, the center of the rotation shaft 35 as a dead point is set. Beyond, the band saw blade 5 is located on the side farther from the rotation shaft 35. Therefore, in this case, the brush 9 is always urged away from the band saw blade 5.

  As described above, when the brush 9 is always urged in the direction of the band saw blade 5, the overlap amount between the band saw blade 5 and the brush 9 is always kept at a constant appropriate amount (appropriate value). Further, a contact roller 45 (see FIG. 2) as an example of a regulating member that abuts on the brush 9 and regulates the movement in the direction of the band saw blade 5 is positioned at a position close to the band saw blade 5. The frame 3 is rotatably provided.

  In the configuration as described above, in order to cut the workpiece (not shown) by running the band saw blade 5 in a certain direction and remove the chips adhering to the band saw blade 5, the brush 9 is moved to the contact roller 45. When the brush 9 is rotated by being driven by the motor 11 while being held in a pressure contact state, the chips adhering to the band saw blade 5 are removed by the brush 9. At this time, the brush 9 may greatly bounce in the direction away from the band saw blade 5 depending on the wear form of the brush 9, the type of the band saw blade 5, the traveling speed, and the like. Thus, when the brush 9 bounces greatly, the brush 9 may be separated from the band saw blade 5, and the certainty of chip removal may be lacking.

  Therefore, in the present embodiment, a shock absorber 47 is provided for suppressing the brush 9 from bouncing greatly in the direction away from the band saw blade 5. More specifically, the shock absorber 47 is made of a shock absorber, and is a return spring (not shown) that is pressed and urged in a direction in which the piston rod 51 protrudes into a cylinder 49 having an external thread formed on the outer peripheral surface thereof. ). Further, the cylinder 49 is provided with a fluid circuit (for example, an orifice, an accumulator, etc.) for reducing the impact when the piston rod 51 is impacted inwardly. In addition, since this kind of shock absorber is well-known, detailed description about the structure of a shock absorber is abbreviate | omitted.

  The shock absorber 47 is provided adjacent to the urging means 43 between the motor support member 13 and the brush support member 15 as shown in FIG. More specifically, the motor support member 13 is provided with a rotation shaft 53 parallel to the rotation shaft 35, and the bracket 55 integral with the rotation shaft 53 includes the above-described bracket 55. A pair of guide bars 57 that are long in a direction orthogonal to the rotation shaft 53 are provided. The cylinder 49 of the shock absorber is screwed and fixed to a slide support member 59 movably supported by the guide bar 57 so that the position of the cylinder 49 can be adjusted. The slide support member 59 is in contact with a stopper 61 provided at the tip of the guide bar 57 and is restricted from moving rightward in FIG.

  The brush support member 15 is provided with a support shaft 63 parallel to the rotation shaft 53, and a bracket 65 is rotatably supported on the support shaft 63. The bracket 65 is integrally provided with a pair of guide bars 67 (see FIG. 3) extending in the direction of the rotation shaft 53. The slide member 69 slidably supported by the guide bar 67 abuts against a stopper 71 provided at the tip of the guide bar 67, and movement in the left direction in FIGS. 1 and 3 is restricted. ing. The tip of the piston rod 51 in the shock absorber is in contact with the slide member 69 as shown in FIGS.

  That is, the slide member 69 is pressed by the piston rod 51 in the shock absorber and is in contact with the stopper 71 of the guide bar 67. The slide support member 59 is in a state where it abuts against the stopper 61 of the guide bar 57 by the reaction force of the piston rod 51 pressing the slide member 69. The slide support member 59 is also movably supported by the guide bar 67. The slide member 69 is also movably supported by the guide bar 57.

  In the configuration as described above, when the brush 9 attempts to greatly bounce in the direction away from the band saw blade 5, the brush support member 15 resists the urging force of the elastic member 43 in FIGS. There is a tendency to turn in an impact direction. When the brush support member 15 rotates, the slide member 69 is pulled through the guide bar 67, and the piston rod 51 of the shock absorber is pressed into the cylinder 49, so that the shock bounce of the brush 9 is suppressed. Will be. Therefore, the brush 9 is not separated from the band saw blade 5, and the chips adhering to the band saw blade 5 can be removed stably and reliably. The return of the piston rod 51 is performed by the action of a return spring provided in the cylinder 49.

  As will be understood from the above description, the shock absorber suppresses shocking bouncing in the direction in which the brush 9 separates from the band saw blade 5, so that the brush 9 approaches and separates from the band saw blade 5. Even if it tends to vibrate (resonate) in the direction, the vibration of the brush 9 can be effectively suppressed, and the conventional problems as described above can be solved.

  FIG. 4 shows a second embodiment of the chip removing device. In the second embodiment, components having the same functions as those of the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted.

  In the second embodiment, the main body frame 3 is provided so as to be openable and closable via a hinge so as to cover the wheel 7 (the mounting state with respect to the main body frame 3 is not shown). (Shock absorber) 47 is attached.

  More specifically, an operating member 75 whose tip side is bent into a V shape is integrally attached to the brush support member 15, and a pressing piece 75 </ b> A that can be elastically displaced using the bent portion as a fulcrum in the operating member 75. The tip of the piston rod 51 in the shock absorber 47 is in contact with the vicinity of the tip. The opening / closing lid 73 is attached to a wheel cover 77 provided integrally with the main body frame 3 through a hinge 79 so as to be freely opened and closed.

  The opening / closing lid 73 constitutes a cushioning material support member separate from the brush support member 15, and the shock absorber 47 is attached to a support bracket 81 attached to the inner surface of the opening / closing lid 73. More specifically, the support bracket 81 is provided with a bent support portion 81A that is substantially parallel to the pressing piece 75A of the operating member 75 when the open / close lid 73 is closed. Yes. The support portion 81A is configured to be elastically deformable with a bent portion as a fulcrum, and the shock absorber 47 is attached to the support portion 81A.

  That is, the shock absorber 47 has a direction substantially parallel to the moving direction of the brush 9 in a direction in which the brush 9 bounces greatly and moves away from the band saw blade 5 (in this example, the brush 9 is centered on the rotating shaft 35). Therefore, the brush 9 is attached in a direction substantially parallel to the tangent to the rotation locus of the brush 9. In other words, the shock absorber 47 is attached in a direction substantially perpendicular to the pressing piece 75 </ b> A of the operating member 75.

  According to the above configuration, since the shock absorber 47 is provided in a direction substantially parallel to the moving direction of the brush 9 in the direction away from the band saw blade 5, the brush 9 greatly bounces in the direction away from the band saw blade 5. This can be suppressed more effectively. Further, since the shock absorber 47 is attached to the elastically deformable support portion 81A and the piston rod 51 is in contact with the elastically deformable pressing piece 75A, the elastic deformation of the supporting portion 81A and the pressing piece 75A is also compatible. In other words, the large bounce of the brush 9 can be more effectively suppressed.

1 Chip remover 5 Band saw blade 7 Drive wheel (or driven wheel)
9 Brush (Rotating brush)
DESCRIPTION OF SYMBOLS 11 Motor 13 Motor support member 15 Brush support member 27 Splash prevention cover 29 Handle 31 Output shaft 35 Rotating shaft 43 Elastic member (biasing means)
45 Contact roller (regulating member)
47 Shock absorber (shock absorber)
49 Cylinder 51 Piston rod 57, 67 Guide bar 59 Slide support member 61, 71 Stopper 69 Slide member

Claims (2)

A chip removing device in a band saw machine, wherein a brush rotated by a motor is biased in a band saw blade direction in the band saw machine, and the movement of the brush in the band saw blade direction is regulated, A restricting member for always maintaining an appropriate overlap amount between the band saw blade and the brush and a buffer for suppressing the bounce of the brush in a direction away from the band saw blade due to interference with the band saw blade. The biasing means is provided between a motor support member integrally mounted with the motor and a brush support member rotatably mounted on the motor support member and rotatably supporting the brush. The shock absorber is provided in a shock absorber support member that is provided separately from the brush support member, and the brush is separated from the band saw blade. Chip removing device in the band saw machine, characterized in that are provided in parallel. A chip removing device in a band saw machine, wherein a brush rotated by a motor is biased in a band saw blade direction in the band saw machine, and the movement of the brush in the band saw blade direction is regulated, A restricting member for always maintaining an appropriate overlap amount between the band saw blade and the brush and a buffer for suppressing the bounce of the brush in a direction away from the band saw blade due to interference with the band saw blade. A biasing means and a shock absorber, a motor support member integrally mounted with the motor, and a brush support rotatably mounted on the motor support member and rotatably supporting the brush. A chip removing device for a band saw machine, which is provided adjacent to each other.

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