JPH0340561Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seri guide lifting device for a bandsaw machine.

The above-mentioned band saw machine is equipped with a seri guide to prevent the band saw blade from swinging during sawing, and since this seri guide needs to be adjusted up and down depending on the thickness of the material to be cut, it is fixed to the top of the frame. A seri guide bar is attached to the provided bracket so as to be movable up and down, and is attached to the lower end of the seri guide bar.

The above-mentioned seri guide bar is provided with a rack in the longitudinal direction on one side, and is engaged with a pinion rotatably supported on the above-mentioned bracket, so that the seri guide bar can be moved up and down by rotating the pinion. It is configured to hold the seri guide at an adjusted position by fixing the seri guide bar with a tightening screw.

However, according to the above-mentioned conventional device, if the tightening screw is loosened when adjusting the raising and lowering of the Seri guide, the Seri guide part will fall due to its own weight. Since you have to support the sled guide part and tighten the tightening screw with the other hand to fix the sled guide part, adjusting its position requires both hands, which makes it difficult to operate.Also, when tightening while supporting the adjusted position, There were some difficulties, such as the position being easily misaligned.

As a result of studies in view of the above-mentioned drawbacks of the conventional device, the present invention was developed by bringing a leaf spring into elastic contact with the pinion shaft that meshes with the seri guide bar, and by holding the pinion shaft by the frictional force with the leaf spring. It is an object of the present invention to provide a seri guide elevating device in which the seri guide bar can be stopped at a desired position with the screws unfastened, thereby making it possible to easily and reliably adjust the elevation of the seri guide. ,
That is the purpose.

The present invention will be described in detail below based on an illustrated embodiment.

Figures 1 and 2 show a band saw machine, in which 1 is a frame, 2 and 2' are pulleys rotatably supported on the upper and lower parts of the frame 1, respectively.
3 is a band saw blade hung on both upper and lower pulleys 2 and 2';
4 is a motor for driving the band saw blade, 5 is a surface plate, 6 is a tensioning device for the band saw blade 3, which is provided to adjust the vertical movement of the upper pulley shaft 2a, and 7 is a vibration of the band saw blade 3 when sawing material. This shows the auction guide that prevents this.

In the band saw machine described above, the seri guide 7 is adjusted up and down to a desired position according to the thickness of the material to be cut by the seri guide lifting device 8. The seri guide lifting device 8 of the present invention is constructed as follows.

As shown in FIGS. 1 to 5, a bracket 10 is fixed to the side surface of the upper arm 9 of the frame 1 with bolts 11, and a guide is provided vertically through the bracket 10. A guide bar 13 is disposed through the hole 12 so as to be able to move up and down.

The above-mentioned saw guide bar 13 is provided with a rack 14 in the longitudinal direction on one side, and a V-shaped groove 15 is provided in the longitudinal direction on the side substantially perpendicular to this, and the band saw blade 3 is inserted into the lower end thereof. A auction guide 7 is fixedly provided to guide the auction.

A pinion 16 is arranged on the bracket 10 at right angles to the seri guide bar 13 and is rotatably operated by a pinion shaft 17.
The seri guide bar 13 is rotated by rotating the pinion 16 with a rotation knob 19 fixed to the outer end of the pinion shaft 17 with a pin 18 or the like.
is provided to be moved up and down.

Further, a tightening screw 20 is screwed through the bracket 10 and its tip is engaged with the V-shaped groove 15. By tightening or loosening the tightening screw 20, the seri guide bar 13 is attached to the bracket 10. It can be fixed in a predetermined direction and at a desired height, or can be released.

Furthermore, the present invention provides for fixing one end of the leaf spring 21 to the bracket 10 in the space 10a of the bracket 10 with a screw 22,
A frictional force is applied to the pinion 16 by bringing the free end 21a into elastic contact with the pinion shaft 17, and an adjustment screw 23 is screwed through the bracket 10 so that its tip is connected to the plate spring. 21
The frictional force can be adjusted in strength by adjusting the strength of the elastic contact force of the plate spring 21 against the pinion shaft 17 by advancing and retracting the adjusting screw 23.

Here, the free end 21a of the leaf spring 21 is located at the fifth
As clearly shown in the figure, the pinion shaft 17 is bent into a substantially semicircular shape having substantially the same curvature in the circumferential direction as the pinion shaft 17, and is brought into external elastic contact with the pinion shaft 17, so that the pinion shaft 17 is always provided with a desired value of frictional force. is made so that it occurs.

In addition, for the frictional force, a plate spring having an appropriate elasticity is selected and used so that the seri guide bar 13 can be prevented from being lowered by its own weight and can be forcibly moved up and down freely. It is set in advance to a desired value by.

In the above structure, when sawing wood, the seri guide 7 is adjusted up and down depending on the thickness of the material to be cut. Untie bar 13,
Next, when the pinion 16 is rotated using the knob 19, the seri guide bar 13 is raised or lowered due to its engagement with the rack 14, so once the seri guide 7 at the lower end is adjusted to the desired position in this way, the tightening screw is tightened. 20 to fix the seri guide bar 13, and fix the seri guide 7 at the adjusted position, completing the adjustment of the vertical position.

Moreover, the above-mentioned seri guide bar 13 has its V-shaped groove 1.
5 and the tip of the tightening screw 20 are engaged, preventing it from rotating in the direction around the axis, so the seri guide 7 is always held in a predetermined direction and does not change its direction when adjusting the elevation. .

In addition, when adjusting the elevation, the serie guide bar 13 is loosened as described above, and the seri guide bar 13 is connected to the pinion shaft 17 and the rack 1.
4. They are interlocked and connected by the meshing of the pinion 16, and the pinion shaft 17 is frictionally engaged with the leaf spring 21, so the friction force causes the seri guide 7 and the seri guide bar 13 to move naturally due to their own weight. Since it is stopped and held without descending, turn knob 19.
After adjusting the seri guide 7 to a desired position by rotating the seri guide bar 13, even if the knob 19 is released, the seri guide bar 13 remains at the adjusted position. Therefore, next tighten the tightening screw 20 and tighten the seri guide bar 1.
3, the seri guide 7 is fixed at the adjustment position.

As explained above, according to the device for lifting and lowering a seri guide for a bandsaw machine according to the present invention, in the device in which the seri guide bar 13 and the pinion 16 are engaged with each other so that the seri guide bar 13 can be moved up and down, a bracket is attached to the pinion shaft 17. By bringing the leaf spring 21 fixedly attached to the bracket 10 into elastic contact, a frictional force is applied, and the elastic contact force of the leaf spring 21 to the pinion shaft 17 is applied by the adjusting screw 23 screwed onto the bracket 10. Since the above-mentioned frictional force is freely adjustable by making it adjustable, when adjusting the raising and lowering of the seri guide after releasing the tightening screw 20, the seri guide 7 and the seri guide bar 13 are moved by their own weight. Since it no longer descends naturally and stops in a natural state at any position, all that is required is to rotate the pinion 16 to adjust the seri guide 7 to the desired position, and then tighten and fix it with the tightening screw 20. Since there is no need to support and hold the guide guide 7, guide bar 13, or knob 19, the above-mentioned elevation adjustment can be easily performed with one hand, and the precision can be improved. Highly adjustable.

Furthermore, the frictional force of the pinion shaft 17 is controlled by the adjusting screw 23.
This can be adjusted by adjusting the frictional force of the leaf spring 21 against the pinion shaft 17, which has the advantage of being able to suitably cope with the weight of the spool guide 7 and the spool guide bar 13.

[Brief explanation of the drawing]

1 and 2 are a front view and a side view of a band saw machine equipped with a serration guide device according to the present invention, FIG. 3 is a front view of the same serration guide device, and FIGS. 4 and 5 are - It is a sectional view taken along the line and - line. 1...Frame, 10...Bracket, 13...
...Serial guide bar, 16...Pinion, 17...
Pinion shaft, 21...plate spring, 23...adjustment screw.

Claims (1)

[Scope of utility model registration request] A series guide bar 13 is attached to a bracket 10 fixed to the frame 1 so as to be movable up and down, and can be fixed at a desired position by tightening or loosening a tightening screw 20 screwed into the bracket. A rack 14 is provided, a pinion 16 meshed with the rack is rotatably supported on the bracket, and a leaf spring 21 is attached to the bracket so as to apply a frictional force to the pinion shaft 17 of the pinion. A seri guide elevating device for a band saw machine, characterized in that the frictional force can be adjusted by making elastic contact with the plate spring and associating an adjustment screw 23 screwed on the bracket with the plate spring.