JP5337527B2 - Vibration isolator for band saw machine - Google Patents

Description

  The present invention relates to a vibration isolator for suppressing cutting noise generated when a workpiece is cut by a band saw blade in a band saw machine, and more particularly to a vibration isolator capable of more effectively suppressing vibration of a band saw blade. .

  It is known that when a workpiece is cut by a band saw machine, cutting noise is generated by vibration of the band saw blade. Therefore, in order to suppress the cutting noise, a configuration in which a heavy weight is in contact with and contacted with the back portion of the band saw blade, a configuration in which the band saw blade is sandwiched by a pair of rollers, and the like are employed (Patent Literature). 1).

Utility Model Registration No. 2523104

  The configuration described in Patent Document 1 is configured to have a large diameter in order to increase the weight of one of the pair of rollers that sandwich and guide the band saw blade. Therefore, by sandwiching and guiding the band saw blade with the roller, it is possible to suppress the generation of cutting noise, but by being configured to sandwich and guide the band saw blade with a small diameter roller and a large diameter roller, Because of the space, it is difficult to increase the weight by increasing the diameter of the roller, and further improvement has been desired.

The present invention has been made in view of the conventional problems as described above, and is a vibration isolator provided in the vicinity of a saw blade guide for sandwiching and guiding a band saw blade in a band saw machine, and a pair of the vibration isolator that sandwich the band saw blade. At least one vibration isolating roller of the anti-vibration roller is provided with an interlocking roller that rotates integrally with the anti-vibration roller, and the interlocking roller is interlocked and connected to the rotation shaft of the one anti-vibration roller. It is characterized by this.

  According to the present invention, since it is a configuration including an interlocking roller that interlocks with a pair of anti-vibration rollers of the anti-vibration roller that sandwiches the band saw blade, the degree of freedom of the arrangement position of the interlock roller is large, It is possible to easily increase the weight of the interlocking roller. Accordingly, it is possible to increase the weight of the rotating system that rotates in conjunction with the vibration isolating roller, and to obtain a vibration isolating effect more effectively.

It is front explanatory drawing which showed notionally and schematically the whole structure of the horizontal type | mold band saw machine as a band saw machine. It is explanatory drawing which shows the structure of the vibration isolator which concerns on 1st Embodiment. It is explanatory drawing which shows the structure of the vibration isolator which concerns on 2nd Embodiment. It is explanatory drawing which shows the structure of the vibration isolator which concerns on 3rd Embodiment. It is explanatory drawing which shows the structure of the vibration isolator which concerns on 4th Embodiment. It is explanatory drawing which shows the structure of the vibration isolator which concerns on 5th Embodiment. It is explanatory drawing which shows the structure of the vibration isolator which concerns on 6th Embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. First, in order to facilitate understanding, an overall configuration of a band saw will be schematically described.

  As is already known, the overall configuration of a horizontal band saw as an example of a band saw is as schematically shown in FIG. That is, the horizontal band saw machine 1 includes a saw blade housing 7 that can move up and down along a guide post 5 erected on a base frame 3. The saw blade housing 7 is moved up and down by a vertical movement actuator 9 such as a hydraulic cylinder, for example, and a long beam member 11 is provided on the upper portion of the saw blade housing 7 in the left-right direction.

  A drive wheel housing 15 in which a drive wheel 13 is rotatably mounted and a driven wheel housing 19 in which a driven wheel 17 is rotatably mounted are provided on both left and right sides of the beam member 11. An endless band saw blade 21 is wound around the drive wheel 13 and the driven wheel 17. Left and right guide arms having left and right saw blade guides 23L and 23R for twisting and raising the band saw blade 21 so that the tooth tips of the band saw blade 21 are directed toward the workpiece W to be cut. 25L and 25R are attached to the beam member 11, and one guide arm 25L of the left and right guide arms 25L and 25R can be positioned in accordance with the size of the workpiece W so that the other guide arm 25R can be positioned. It is configured to be able to approach and leave.

  In order to support the workpiece W to be cut by the band saw blade 21, a vise device 27 is provided on the base frame 3. The vise device 27 includes a fixed vise jaw 31 on one side of the vise bed 29, and a moving vise jaw 33 that presses and fixes the workpiece W to the fixed vise jaw 31 on the other side of the vise bed 29. In addition, since this kind of vice apparatus 27 is well-known, the detailed description about the structure of the vice apparatus 27 is abbreviate | omitted.

  With the above configuration, in a state in which the workpiece W is fixed to the vice apparatus 27, the drive wheel 13 is rotationally driven by the drive motor, the band saw blade 21 is driven to travel, and the saw blade housing 7 is lowered from the raised position to lower the workpiece W. Cutting is performed.

  Referring to FIG. 2, FIG. 2 shows a configuration in which a vibration isolator 35 is provided in a portion close to the saw blade guide 23L. By the way, although it is desirable to provide the vibration isolator 35 in the left and right saw blade guides 23L and 23R, it is also possible to provide the vibration isolator 35 only in one of the saw blade guides. Further, since the left and right saw blade guides 23L and 23R have a symmetrical configuration, a description will be given of a configuration in which one of the saw blade guides 23L includes a vibration isolator 35, and the other saw blade guide 23R has a vibration isolation. The description of the configuration when the apparatus is provided is omitted.

  By the way, the left and right saw blade guides 23L, 23R act to twist and raise the tooth tips of the band saw blade 21 so as to be directed in the workpiece W direction. 21 includes a pair of guide rollers and a pair of inserts 37. In this embodiment, the saw blade guide 23L having the insert 37 is illustrated.

  An anti-vibration block 41 is integrally attached to a guide main body 39 provided in the saw blade guide 23L by a fixture such as a bolt, and the anti-vibration block 41 contacts one side surface of the band saw blade 21. A rotating shaft 45 provided with a pair of anti-vibration rollers 43 that rotate is provided vertically and rotatably. Further, a swing lever 49 is swingably supported on the anti-vibration block 41 via a hinge pin 47. A vibration isolating roller 51 that presses the band saw blade 21 against the vibration isolating roller 43 is rotatably provided at the lower end of the swing lever 49. The anti-vibration block 41 is provided with a swing operation device 53 such as a hydraulic cylinder in order to swing the swing lever 49 about the hinge pin 47 as an axis.

  In the configuration as described above, when the work W is cut in the band saw 1, the vibration isolating roller 51 is pressed and urged toward the anti-vibration roller 43 by the action of the swinging operation device 53. The band saw blade 21 is in a narrowed state. Therefore, the vibration of the band saw blade 21 generated when the workpiece W is cut is transmitted to both the anti-vibration rollers 43 and 51 to be attenuated, so that the vibration can be suppressed and the noise during cutting can be reduced. It is.

  By the way, in the said structure, since vibration can be more effectively suppressed by enlarging the diameter of the anti-vibration rollers 43 and 51, and making it heavy weight (large mass), the said anti-vibration roller 43, The diameter of 51 is made larger. However, due to the structure of the band saw machine, there is a limit to increasing the diameter. Therefore, in the present embodiment, the interlocking roller 55 is attached to the upper end portion of the rotation shaft 45 of one vibration-proof roller 43 integrally and detachably via a fixing tool 57 such as a bolt.

  Therefore, the mass (weight) of the rotating system that rotates integrally with the vibration isolating roller 43 is increased, and the inertia is increased. Therefore, the anti-vibration effect is improved as compared with the case of the anti-vibration roller 43 alone.

  As already understood, the anti-vibration roller 43 and the interlocking roller 55 are interlocked and connected via a rotating shaft 45, and the interlocking roller 55 is disposed at an upper position away from the anti-vibration roller 43. Therefore, even when the pair of vibration isolating rollers 43 and 51 are made larger to increase the weight, there is a large degree of freedom in the arrangement position of the interlocking roller 55 and the interlocking roller. Therefore, the vibration isolating effect can be improved by increasing the weight of 55.

  FIG. 3 shows a second embodiment. In this embodiment, a short shaft 59 having the same diameter as that of the rotary shaft 45 is integrally provided at the upper end portion of the interlocking roller 55. In this configuration, the interlocking roller 55 can be added by engaging the engagement recess 61 provided in the interlocking roller 55 with the short shaft 59. Therefore, the number of interlocking rollers 55 can be increased, the mass (weight) of the rotating system rotating in conjunction with the vibration isolating roller 43 can be increased, and the vibration isolating effect can be further improved. .

  FIG. 4 shows a third embodiment. In this embodiment, a roller bracket 63 integrally provided on the upper part of the vibration isolating block 41 is in contact with the interlocking roller 55 and rotates integrally. The two interlocking rollers 65 are rotatably provided. Also in this configuration, the weight (mass) of the rotating system that rotates integrally with the vibration isolating roller 43 can be increased, and the same effect as in the above embodiment can be achieved.

  FIG. 5 shows a fourth embodiment. In this embodiment, a sprocket 67 is provided integrally with the interlocking roller 55 and is rotatably supported by a roller bracket 69 provided in the vibration isolating block 41. 3 is provided with a sprocket 73, and an endless member 75 such as a chain is wound around both the sprockets 67 and 73. Even in this configuration, the same effects as those of the embodiment can be obtained.

  FIG. 6 shows a fifth embodiment. In this embodiment, the rotating shaft 45 of the vibration roller 43 (not shown in FIG. 6) and a roller bracket 77 provided in the vibration isolation block 41 are shown. The rotating shaft 81 of the interlocking roller 79 that is rotatably supported by the shaft is interlocked and connected via a universal joint 83. Even in this configuration, the same effects as in the above-described embodiment can be obtained.

  FIG. 7 shows a sixth embodiment, which can achieve the same effects as those of the above-described embodiment with a configuration in which the rotary shaft 45 and the rotary shaft 81 are interlocked and connected via a bevel gear 85.

  As can be understood from the above description, at least one of the pair of anti-vibration rollers 43 and 51 for narrow-pressure (clamping) the band saw blade 21 at a position close to the saw blade guide 23L is provided with the anti-vibration roller 43. The interlocking roller 55 rotates integrally with the vibration roller 43, and the interlocking roller 55 is disposed at a position away from the region where the pair of vibration isolation rollers 43 are disposed (above the vibration isolation roller 43). Therefore, the degree of freedom of the arrangement position of the interlocking roller 55 is increased, and the diameter and weight of the interlocking roller 55 can be increased. Accordingly, the weight (mass) of the rotating system that rotates integrally with the vibration isolating roller 43 can be increased to improve the vibration isolating effect.

21 Band saw blade 23L, 23R Saw blade guide 25L, 25R Guide arm 35 Vibration isolator 41 Vibration isolator block 43, 51 Vibration isolator roller 45 Rotating shaft 49 Oscillating lever 53 Oscillating actuator 55 Interlocking roller

Claims (1)

A vibration isolator provided in the vicinity of a saw blade guide for sandwiching and guiding a band saw blade in a band saw machine, wherein at least one of the pair of vibration isolator rollers sandwiching the band saw blade A vibration isolator for a band saw machine comprising an interlocking roller that rotates integrally with the interlocking roller, and the interlocking roller is interlockingly connected to the rotation shaft of the one vibration isolating roller.

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