JPH0487717A - Saw blade guide device in band sawing machine - Google Patents

Abstract

PURPOSE:To improve efficiency of band saw blade exchange work by making one of saw blade guide members move to a position away from a position where band saw blades are held and guided in a saw blade guide device which holds and guides a band saw blade which is laid around a drive wheel and a follow-up wheel. CONSTITUTION:A fixed base 43 which is provided with one of saw blade guide members which makes contact with and guides one side of the barrel section of a band saw blade 29 is fixed to a support member 41 mounted in a saw blade housing 5. A movable base 45 which is provided with the other saw blade guide member which makes contact with and guides the other side of the barrel section of the band saw blade 29 is mounted on the fixed base 43 in such a way that it can oscillate in horizontal direction freely. A support roller and a saw blade inset 71 are moved to positions away from the holding and guiding position by a hydraulic cylinder. The endless band saw blade 29 is laid around a drive wheel and a follow-up wheel, and also after bringing the band saw blade 29 staying in the cut region in contact with the support roller and saw blade insert, the support roller and saw blade insert 71 are moved from their positions away from each other to a position where the barrel of the band saw blade is held and guided.

Description

Detailed Description of the Invention [Objective of the Invention (Industrial Application Field) The present invention relates to a saw blade for guiding a band saw blade in a cutting area in a band saw machine such as a horizontal band saw machine or a vertical band saw machine. This invention relates to a guide device.

(Prior Art) To explain the saw blade guide device of a vertical band saw machine as an example of a conventional band saw machine, there is a saw blade guide device for a drive wheel that hangs an endless band saw blade, and a saw blade housing that is supported by a driven wheel at an appropriate position. A pair of saw blade guide devices are vertically opposed to each other for guiding the band saw blade in the cutting area, and each saw blade guide device includes a pair of body support members for guiding the body of the band saw blade. Be prepared to approach and face the enemy. Then, the body part support member on the negative side can be moved by a very small amount in the direction approaching the other body part support member via one of the mini-cylinders.

Therefore, when the drive and driven wheels are used to hang the band saw blade in a knurled shape, the band saw blade is inserted into the gap between the pair of body support members. Then, the pair of trunk support members are brought close to each other via the mini-cylinder. This allows the pair of body support members to guide and support the body of the band saw blade.

(Problem to be Solved by the Invention) However, in the conventional saw blade guide device as described above, since the gap between the pair of body support members is minute, the minute gap between the pair of body support members is small. It is troublesome to insert the bandsaw blade into the band saw blade, and there is a problem in that work efficiency deteriorates.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a saw blade guide device for a band saw machine that can solve the above two problems.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the conventional problems, the present invention provides a saw blade no. In a band saw machine equipped with a saw blade, the saw blade guide device is used to guide and support the band saw blade in the cutting area, and supports the body of the band saw blade when the band saw blade is hung around the driving and driven wheels. For this purpose, a pair of body support members are provided facing each other on the saw blade housing, and at least one of the pair of body support members is set at a body support position to support the body of the band saw blade. It is provided so as to be movable between the torso support position and the torso support avoidance position separated from the torso support position.

(Function) In the above configuration, first, at least one of the pair of trunk support members is moved away from the trunk support position 1. to the torso support avoidance position. Next, the endless bandsaw blade is driven and wound around the driven wheel, and is positioned at the body support position. Then, the torso support member located at the torso support avoidance position is positioned at the torso support position. Thereby, the body of the band saw blade can be supported by the pair of body support members.

(Example) Hereinafter, an example according to the present invention will be described based on the drawings.

Referring to FIGS. 8 and 9, a vertical band saw machine 1 as an example of a band saw machine includes a work table 3 that supports a workpiece W;
It is provided with a saw blade \Using 5 that is movable in the left-right direction (left-right direction in FIGS. 8 and 9).

Regarding the details of the work table 3, the work table 3 extends in the front and back direction (in the front and back directions toward the paper surface in FIG. 8, and in the up and down direction in FIG. 9), and has a workpiece W
A pair of fixing vises 7.9 are provided on the work table 3 in order to fix it in a predetermined position on the work table 3. The fixing vise 7 is movable in the left-right direction toward and away from the fixing vise 9 via the fixing cylinder 11. Further, on the rear side of the fixed vice 7.9, a pair of known conveyance vises (not shown) capable of gripping the workpiece W are provided in order to convey the workpiece W forward. The vice is movable back and forth via a conveyance cylinder (not shown).

Regarding the details of the saw blade housing 5, the support frame 13 installed near the work table 3 is provided with a plurality of guide rails 15.17 extending in the left-right direction. A running member 19.degree. 21, which is movable in the left and right directions, is attached to an appropriate position on the saw blade housing 5. Further, in order to move the saw blade housing 5 in the left-right direction, the support frame 13 is provided with a ball screw 25 that is operatively connected to a drive motor 23.
A nut member 27 screwed onto the ball screw 25 is attached to the saw blade housing 5.

Inside the saw blade housing 5 is an endless band saw blade 2.
A drive wheel 31 and a driven wheel 33 for hanging and attaching the drive wheel 9 are rotatably provided. The drive wheel 31 is rotatable via a drive motor 35, and
The driven wheel 37 is movable up and down toward and away from the drive wheel 31 via the hydraulic cylinder 36 .

With the above configuration, after the pair of conveyance vises are brought close to each other to grip the workpiece W, the pair of conveyance vises are moved forward to position and fix the workpiece W at a predetermined position on the work table 3. By bringing a pair of fixing vises 7.9 close to each other via the cylinder 11, the workpiece W is fixed on the work table 3. Then, the band saw blade 29 is driven by the drive motor 35, and the driven wheels 31 and 33 are rotated to run the band saw blade 29, and the saw blade 1 housing 5 is moved to the workpiece W by the drive motor 23, the ball screw 25, etc.
Move it to the left, approaching it. As a result, the work material W
The desired cutting process can be performed on the material.

In order to guide the band saw blade 29 in the cutting area, the saw blade housing 5 is provided with a pair of saw blade guide devices 37 and 39 vertically facing each other.

For details of the saw blade guide device 37, refer to FIGS. 1 to 4. The saw blade housing 5 includes a supporting member 4.
1 is provided, and this support member 41 has a fixed base 43
is fixedly provided.

A movable base 45 is provided on the fixed base 43 so as to be swingable in the horizontal direction.

More specifically, the support portion 43a of the fixed base 43.

Base portions 45a and 45b of the movable base 45 are swingably supported at 43b via hinge bins 47a and 47b.

In order to swing the movable base 45 about the hinge bins 47a and 47b, a slider 49 is moved in the left-right direction (left-right direction in FIGS. 1, 2, 3, and 4) on the fixed base 43. Freely installed, movable base 4
A guide groove 5 having a predetermined shape provided in the base portions 45a and 45b of 5
153 is integrally attached to the slider 49. In order to move the slider 49 in the left and right direction, a hydraulic cylinder 57 equipped with a supply port 57a and a discharge boat 57b is installed on the fixed base 43 to attach the mounting bolt 5.
A piston rod 61 provided at 9 and capable of protruding leftward from the hydraulic cylinder 57 is connected to the slider 49 via a connecting member 63. Note that the connection member 63
The guide hole 65 provided in the fixed base 43 is moved in the left-right direction.

With the above configuration, by appropriately operating the hydraulic cylinder 57 to move the slider 47 to the right, the movable base 45 is moved through the groove 51.5B and the bin 55 in FIGS.
It moves from the position shown by the solid line to the position shown by the imaginary line in the figure. In addition, by appropriately operating the hydraulic cylinder 57 to move the slider 49 to the right, the movable base 4
5 can be moved from the position shown by the imaginary line in FIGS. 1 and 2 to the position shown by the solid line.

On the left side of the fixed base 43 and on the left side of the movable base 45 are support rollers 67 for supporting the body of the bandsaw blade 29.
69 is rotatably provided, and the support roller 67.6
9 are almost the same height.

Further, insert support parts 43C and 45C are provided on the left side of the fixed base 43 and the left side of the movable base 45, and the insert support parts 43C and 45C have saw blade inserts 71. 73 is the provision.

The insert support portion 43c is provided with an opening 75, and a roller support member 77 is inserted into the bin 79.
It is provided so as to be able to swing freely in the left and right direction via the. A backup roller 81 for supporting the back of the bandsaw blade 29 is rotatably provided on the roller support member 77 via a rotating shaft 83 and a bearing 85.

With the above configuration, by appropriately operating the hydraulic cylinder 57 to move the slider 47 to the right, the movable base 45 moves from the position shown by the solid line in FIGS. 1 and 2 to the position shown by the imaginary line. It is. Therefore, the support roller 67 and the saw blade insert 71 can move from a body support position where the body of the band saw blade 29 is supported to a body support avoidance position that is separated from this body support position.

In addition, the slider 49 is moved by appropriately operating the hydraulic cylinder 57.
By moving the movable base 45 to the left, the movable base 45 moves to the left.
It moves from the position shown by the imaginary line in the figures and FIG. 2 to the position shown by the solid line. Therefore, the support roller 67 and the saw blade insert 71 can be moved from the trunk support position avoidance position to the trunk support position.

When the support roller 67 and the saw blade insert 71 are located at the trunk support position, the support roller 67 is moved to the support roller 69.
The saw blade insert 71
The movable base 45 is provided with biasing means 89 for biasing the blade toward the saw blade insert 73 . More specifically, a hole 91 is provided in the protruding portion 45d of the movable base 45, and a disc spring 93 is loaded into the hole 91.

The device spring 93 urges the ball 95 forward,
This ball 95 can come into contact with the abutment N49a of the slider 49.

With the above configuration, the four sliders can be moved to the left by operating the hydraulic cylinder 57 as appropriate, and the saw blade insert 71 can be moved to the left.
, when the support roller 67 is moved to the trunk support position,
The ball 95 is moved rearward by the contact portion 49a of the slider 490 against the biasing force of the disc spring 93. Therefore, the disc spring 93 is compressed, and the biasing force of the disc spring 93 urges the movable base 45 in a direction toward the fixed base 43. To this end, the saw blade insert 71 is biased toward the saw blade insert 73, the support roller 67 is biased toward the support roller 69, and the bandsaw blade 29 is forced toward the pair of saw blade inserts 71. 77, stable force is supported by a pair of support rollers 67 and 69.

Referring to FIG. 7, there is a chamber 97.9 on the supporting side of the saw blade insert 71, 73 for supplying cutting fluid.
9 is the setting. The front side (as seen from the running direction of the band saw blade 29)
The depth of the chamber 97.99 on the left side in FIG.
It is deeper than the depth of 99.

Further, referring to FIGS. 5 and 6, in order to remove chips adhering to the bandsaw blade 29, the upper side of the fixed base 43 is provided with two spouts 101 and 103 for cutting oil. A device 105 is provided, and the cutting fluid ejected from the ejection ports 101 and 103 is ejected toward the cutting edge of the bandsaw blade 29.

The operation of this embodiment will be explained based on the above-described configuration.

By appropriately operating the hydraulic cylinder 57, the support roller 67 and the saw blade insert 71 are moved from the trunk support position to a trunk support avoidance position separated from the trunk support position. Next, the endless band saw blade 29 is driven, and the driven wheel 31.33
At the same time, the band saw blade 29 in the cutting area is brought into contact with the support roller 69 and the saw blade insert 73. Then, by appropriately operating the hydraulic cylinder 57, the support roller 6
7. Move the saw blade insert 71 from the trunk support avoidance position to the trunk support position. This allows the body of the band saw blade 29 to be supported by the pair of support rollers 67, 69 and the pair of saw blade inserts 71, 73.

According to this embodiment, the support roller 67 and the saw blade insert 7
1 is movable between a trunk support position and a trunk support avoidance position separated from the trunk support position, the trunk of the bandsaw blade 29 is moved between a pair of support rollers 67 and 69, and a pair of support rollers 67 and 69. It can be easily supported by the saw blade inserts 71 and 73, which has the effect of improving work efficiency.

It should be noted that the present invention is not limited to the description of the embodiments described above, and can be implemented in various other forms by making appropriate changes.

[Effects of the Invention] As can be understood from the above description of the embodiments, according to the present invention, at least one of the pair of trunk support members is moved away from the trunk support position. By moving the band saw blade between the body support avoidance position and the body support avoidance position, the body of the band saw blade can be easily supported by the pair of body support members, which has the effect of improving work efficiency.

[Brief explanation of drawings]

The drawings are for explaining embodiments according to the present invention.
The figure is a view along line II in FIG. 4. FIG. 2 is a view taken along the line ■-■ in FIG. 4. FIG. 3 is a diagram taken along the line ■-■ in FIG. 2. FIG. 4 is a front view of the saw blade guide device. FIG. 5 is a diagram showing the arrowed section (■) in FIG. 4. Figure 6 shows Vl- in Figure 5.
It is a figure along the VI line. FIG. 7 is a diagram showing the arrowed section (■) in FIG. 1. FIG. 8 is a front view of the vertical bandsaw machine. FIG. 9 is a plan view of the vertical bandsaw machine. 1...Vertical band saw machine 5...Saw blade housing 29...
・Band saw blade 31... Drive wheel 33... Driven wheel 37. 39... Saw blade guide device 67° 69... Support roller 71° 3... Saw blade inserter

Claims (1)

[Claims] In a band saw machine equipped with a saw blade housing that supports a drive wheel and a driven wheel for hanging an endless band saw blade, the saw blade guide device is used to guide and support the band saw blade in the cutting area. In order to support the body of the band saw blade when the band saw blade is hung around the wheel, a pair of body support members are provided in the saw blade housing to face each other, and at least one of the pair of body support members is connected to the saw blade housing. A saw blade guide device for a band saw machine, characterized in that the saw blade guide device is provided movably between a body support position that supports the body of the band saw blade and a body support avoidance position that is separated from the body support position. .