JPH0650727U - Portable band saw - Google Patents

Abstract

(57) [Abstract] [Purpose] It can be used as both a vertical band saw and a horizontal band saw. An object of the present invention is to enable cutting of a thin material to be cut, which does not require fixing so much in a short time. [Structure] A bed 1 having a placing table 2 for the material W to be cut and vices 3 and 4 for fixing the material W to be cut, and a base end portion 5a freely rotatable on a tip end portion 1a of the bed 1 via a spindle 6. The endless saw blade 8 supported by the motor 7 and driven by the motor 7 is disposed so as to be exposed in a predetermined range. A portable band saw comprising a frame 5 provided with a table 9 on which the material W to be cut is placed when the material W to be cut is cut by the endless saw blade 8 in a vertical state.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a portable band saw capable of cutting a material to be cut as a vertical band saw or a horizontal band saw.

[0002]

[Prior art]

 Conventionally, when cutting a small material or a fine material in a short time, a grindstone cutting machine, a tip saw cutting machine, or a vertical band saw is used.

[0003]

[Problems to be solved by the device]

 At construction sites, small materials such as thin iron plates, thin iron bars, and thin iron pipes are often desired to be cut quickly without the need for precision cutting. In such a case, a grindstone cutting machine or a tip saw cutting machine is usually used, but despite the small material to be cut, the material to be cut is sandwiched between a fixed vise and a movable vise, or a material to be cut by a chain vise. Was tied, the material to be cut was fixed, and the cutting work was performed.

Further, in the grindstone cutting machine, depending on the material to be cut, the cut surface is hardened, so that there is a thing that cannot be cut unless it is a tip saw cutting machine.

On the other hand, the tip saw cutting machine is uneconomical considering the maintenance because the chips forming the tip saw may be scattered depending on the usage method, and the expensive tip saw must be replaced.

Further, it is difficult to cut the material to be cut such as curving or slitting with a vertical band saw, but this contour machine is inconvenient to carry at a place such as a construction site.

In view of the above-mentioned circumstances, the present invention has a frame provided with an endless saw blade that is rotatable with respect to a bed and driven by a motor and is vertically fixed to form a vertical band saw. In addition, we also provide a portable band saw that can be used to cut the material to be cut even when it is laid down horizontally, and the frame is fixed vertically to form a vertical band saw, and the frame is laid down horizontally. Curved cutting or slitting (cutting) of the material to be cut that cannot be cut by the horizontal band saw, small cutting of material that does not require fixing with a vise, and cutting of thin cutting material in a short time The purpose is to be able to.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a bed having a mounting table for the material to be cut and a vise for fixing the material to be cut, and a base end portion of the bed, which is rotatable via a spindle, at the tip end portion of the bed. The endless saw blade, which is supported by the motor and is driven by the motor, is arranged so as to be exposed in a predetermined range, and the endless saw blade in the vertical state is attached to the exposed lower end when the endless saw blade is pivotally fixed so as to be vertical. This is a portable band saw composed of a frame provided with a table on which the material to be cut is placed when the material to be cut is cut.

A frame for fixing the frame in the vertical state by locking the tip end to the base end of the frame that has been rotated vertically in the bed by being operated on the base end side thereof. A fixed rod was provided, and it was turned on by manually moving the fixed rod in one direction at a right angle to the axial direction, turned off by moving it in the other direction, and the frame was laid down on the bed. When the material to be cut is cut by the endless saw blade, it is turned off by moving the frame fixing rod in the other direction by the table, and a switch for turning on and off the power of the motor is provided, and A storage portion is provided on the bottom surface of the bed for storing an endless saw blade that is curved in a substantially concave shape, and further, the frame is configured to be stored and withdrawn in the base end portion of the bed. This is a portable band saw with a foot plate for putting weight on it so that it will not fall when it is fixed vertically.

[0010]

[Action]

 The portable band saw of the present invention has the above-mentioned structure, like the horizontal band saw, and fixes the material to be cut by fixing it with a vise on the bed mounting table, and the frame fixing rod is substantially perpendicular to the axial direction. , The switch is turned on by manually moving it in one direction, the motor that drives the endless saw blade provided on the frame is rotated, and the frame provided with the endless saw blade that is driven by this motor is knocked down. The saw blade is pressed against the material to be cut for cutting. When the cutting is completed, the frame fixing rod is moved in the opposite direction to the other direction by the table, which is a mounting table for the material to be cut when the frame is fixed vertically and the material to be cut is cut. The switch is turned off and the motor is stopped.

Further, the frame is pivoted vertically, the front end of the frame fixing rod is locked to the base end of the frame, the frame is fixed vertically, and the frame is stored in the base end of the bed. Pull out the left foot plate, put your weight on it to prevent the frame from tipping over, and perform curved cutting, slit cutting (cutting) etc. of the material to be cut that can not be cut when the frame is laid down sideways. The material to be cut or a small material to be cut that does not require fixation with a vise can be placed on the table and cut in a short time.

Further, the endless saw blade is often replaced between the case where the frame is fixed in a vertical state and the material to be cut is cut and the case where the frame is laid down sideways to cut the material to be cut. , Store the endless saw blade that is not currently used in the storage area of the band saw provided on the bottom of the bed.

[0013]

【Example】

 An embodiment of a portable band saw according to the present invention will be described below in detail with reference to the drawings. 1 is a perspective view of the portable band saw of the present invention used as a vertical band saw, and FIG. 2 is a perspective view of the portable band saw of the present invention used as a horizontal band saw.

In these figures, 1 is a mounting table 2 for the material W to be cut, a fixed vice 3 for fixing the material W to be cut, and a movable vice 4 which is moved by a push rod 4b which moves forward and backward by operating a handle 4a. It is a bed having and.

Reference numeral 5 denotes a frame in which a base end portion 5a is rotatably supported by a front end portion 1a of the bed 1 via a support shaft 6, and a drive motor (not shown) is provided in the frame 5 to drive a drive member (not shown). An endless saw blade 8 driven by the mechanism is arranged so as to be exposed in a predetermined range 8a.

A reference numeral 9 is provided on the exposed lower end portion 8 a ′ of the endless saw blade 8 when the frame 5 is vertically fixed, and the material W to be cut is cut when the material W is cut by the endless saw blade 8. It is a table to be placed.

Reference numeral 10 denotes a frame in which the tip portion 10a is inserted into an engagement groove 5b formed in the base end portion 5a of the frame 5 which is operated in the vertical state by being operated on the base end portion 1b side of the bed 1. 5 is a frame fixing rod for fixing 5 in a vertical state.

When the frame 5 is laid down sideways to be used as a horizontal band saw, the tip portion 10a of the frame fixing rod 10 is pulled out from the engagement groove 5b, and the frame 5 is first pulled at a predetermined angle (the material W to be cut). When tilted up to 45 to 60 degrees with respect to the mounting table 2, the tip end portion 10a of the frame fixing rod 10 is engaged with the second engaging groove 5c and is held so as not to fall further. Then, the material W to be cut is placed on the mounting table 2 of the bed 1, fixed by sandwiching it between the fixed vise 3 and the movable vise 4, and then the tip portion 10a of the frame fixing rod 10 is subjected to the second engagement. When the frame 5 is pulled out from the groove 5c, the frame 5 is further tilted, and the endless saw blade 8 is pressed against the material W to be cut to cut the material W to be cut.

Reference numeral 11 turns on when the frame fixing rod 10 is manually moved in one direction substantially at right angles to the axial direction, and turns off when the frame fixing rod 10 is moved in the other direction, and the frame 5 is tilted to be placed on the bed 1. When the placed material W to be cut is completely cut by the endless saw blade 8, it is turned off by moving the frame fixing rod 10 in the other direction by the table 9, turning on and off the power of the motor. It is a switch to make.

In order to prevent the switch 11 from being turned on carelessly, a pin 10b is provided in the middle of the frame fixing rod 10 in a direction perpendicular to the axial direction, and the switch 11 is moved to the off position. As shown in FIG. 3, the pin 10b is in contact with the stopper 12 so that the frame fixing rod 10 cannot be moved in one direction substantially at right angles to the axial direction. The tip 10a of the frame fixing rod 10 projecting from the tip 1a of the bed 1 is chamfered, and the chamfered tip 10a becomes a non-circular hole formed in the tip 1a of the bed 1. When fitted, this frame fixing rod 10 is slidable and non-rotatable.

Then, as shown in FIG. 1, when the switch 11 is turned on and the motor 7 is rotated in a state where the frame 5 is fixed vertically, the tip portion 10 a of the frame fixing rod 10 is rotated. When the frame fixing rod 10 is pulled out toward the front against the spring provided at the tip portion 10a to the extent that does not completely come out of the engaging groove 5b formed at the base end portion 5a of the frame 5, as shown in FIG. As indicated by the broken line, the pin 10b is prevented from hitting the stopper 12, and the frame fixing rod 10 can be moved in one direction substantially perpendicular to the axial direction as indicated by the broken line. The frame fixing rod 10 can push the pressing piece 11a of the switch 11 to turn on the switch 11.

Further, in the state shown in FIG. 1, the tip end 10a of the frame fixing rod 10 is completely pulled out from the engaging groove 5b formed in the base end portion 5a of the frame 5, and as shown in FIG. Even when the frame 5 is tilted, the pin 10b is prevented from hitting the stopper 12, and the frame fixing rod 10 can be moved in one direction at a substantially right angle to the axial direction. The switch 11 can be turned on by pushing the pressing piece 11a of the switch 11 by means of 10.

Further, as shown in FIG. 2, when the frame 5 is laid down and used as a horizontal band saw, and the material W to be cut placed on the bed 1 is cut by the endless saw blade 8, the result is shown in FIG. As shown, the inclined portion 9a of the table 9, which is a mounting table for the material to be cut W when used as a vertical band saw, hits the frame fixing rod 10, and the frame fixing rod 10 turns off the switch 11. In the other direction, that is, in the right direction in FIG. 4, the switch 11 is turned off and the motor 7 is stopped.

Further, as shown in FIG. 5, when the frame fixing rod 10 is moved to a position where the switch 11 is turned on or off, the frame fixing rod 10 is formed in a valley formed on the elastic plate 13. It is locked to the portions 13a and 13b so that the on / off position of the switch 11 is clear. That is, the switch 11 is turned on when the frame fixing rod 10 is moved so as to be engaged with the valley portion 13a formed on the elastic plate 13, and the switch 11 is turned on when it is moved so as to be engaged with the valley portion 13b. Turns off.

A reference numeral 14 shown in FIG. 6 is a storage portion formed so as to store the concavely curved endless saw blade 8 on the bottom surface of the bed 1, and the storage portion 14 is a leg portion which is in contact with the ground and is shown by a diagonal line. 1c, a rib 1d formed on the outer edge of the bed 1 slightly higher than the leg 1c, a second rib 1d 'formed slightly higher than the rib 1d, and a space surrounded by the bottom surface 1e. The side edge of the endless saw blade 8 housed in the housing portion 14 hits the second rib 1d 'and is prevented from moving further toward the bottom surface 1e.

Reference numeral 15 denotes a foot plate which is provided in the base end portion 1b of the bed 1 so as to be retractable and retractable. The side edges 15a and 15a of the foot plate 15 are slidable at positions facing the bottom surface 1e of the bed 1. Supporting pieces 16, 16 of the foot plate 15 each having a U-shaped recess to be fitted are provided, and both side edges 15a, 15a of the foot plate 15 are slidably supported by the supporting pieces 16, 16. The front end side of the foot plate 15 is slidably supported by supporting pieces 17, 17 formed on the rib 1d at the outer edge of the bed 1, and a drop-out preventing projection 18 is provided at the rear end of the foot plate 15. ing.

Reference numerals 19 and 19 ′ are handles provided on the frame 5. As shown in FIG. 1, when the frame 5 is vertically fixed and used as a vertical band saw, one handle is provided. 19 'acts as a leg. Reference numeral 20 is a cord connecting the switch 11 and the motor 7.

Since the portable band saw of the present invention is constructed as described above, when the portable band saw is used as a horizontal band saw, as shown in FIG. Then, the material W to be cut is placed by fixing it with the fixed vise 3 and the movable vise 4, the frame fixing rod 10 is pulled in the axial direction, and then the switch 11 is moved by moving it in one direction substantially at right angles to the axial direction. When turned on, the motor 7 that drives the endless saw blade 8 provided on the frame 5 is rotated, the frame 5 provided with the endless saw blade 8 that is driven by this motor 8 is tilted, and this endless saw blade 8 is cut. The material W is pressed and cut. When the cutting is completed, the frame fixing rod 10 turns on the switch 11 by the table 9 which is a mounting table of the material W to be cut when the frame 5 is vertically fixed and the material W to be cut is cut. It is moved in the direction opposite to the movement (the other direction), the switch 11 is turned off, and the motor 7 is stopped.

When the portable band saw is used as a vertical band saw, the frame 5 is rotated vertically so that the tip portion 10a of the frame fixing rod 10 is formed at the base end portion 5a of the frame 5. Insert it into the groove 5b to fix the frame 5 vertically, and then pull out the foot plate 15 stored in the base end 1b of the bed 1 to prevent the frame 5 from falling down by stepping on it. Switch 11 is turned on by placing the material W to be cut on the table 9 which is a mounting table of the material W to be cut provided on the frame 5, and pulling the frame fixing rod 10 a little to move it in one direction. Thus, the endless saw blade 8 is driven by the motor 7, and the material W to be cut is pressed against the endless saw blade 8 to cut the material W to be cut. You can

[0030]

[Effect of device]

 Since the portable band saw of the present invention is configured as described above, it can be used like a vertical band saw and a horizontal band saw with one portable band saw, and can be easily changed depending on the intended use. It is possible to improve work efficiency.

Further, in a normal horizontal band saw, the switch section and the frame fixing device are separate, so that the switch ON / OFF operation section and the frame fixing (upper limit fixing) operations are performed separately. Although it was necessary, in this invention, the frame fixing rod plays the role of a lever that turns the switch on and off as it is, and since a series of operations can be performed with one hand, workability is significantly improved compared to the conventional one. It was way.

When used as a horizontal band saw, the endless saw blade is pressed against the material to be cut to cut it, and when the cutting is completed, a table which is a mounting table for the material to be cut when used as a vertical band saw is used. , The frame fixing rod is moved in the direction opposite to the movement to turn on the switch, the switch is turned off and the motor is stopped, so when the cutting of the material to be cut is completed, the switch is manually operated. It is safe because there is no need to operate it off.

When the portable band saw of the present invention is used as a vertical band saw, the frame is vertically rotated, and the tip of the frame fixing rod is locked to the base end of the frame to vertically move the frame. After fixing it, pull out the foot plate stored in the base end of the bed, step on it and apply your weight so that the frame does not fall, and you cannot cut it when the frame is laid sideways. Curve cutting, slitting (cutting) of cutting material, cutting of small cutting material that does not require fixing with a vise, and thin cutting material can be cut in a short time.

Further, the frame of the portable band saw of the present invention is vertically fixed to cut the material to be cut as a vertical band saw, and the frame is laid down sideways to cut the material to be cut as a horizontal band saw. In many cases, the endless saw blades are often replaced, and therefore, the endless saw blades that are not currently used can be stored in the endless saw blade storage section provided on the bottom of the bed. It is convenient.

[Brief description of drawings]

FIG. 1 is a perspective view of the portable band saw of the present invention used as a vertical band saw.

FIG. 2 is a perspective view of the portable band saw of the present invention used as a horizontal band saw.

FIG. 3 is a view showing a switch for turning the motor on and off when the portable band saw of the present invention is viewed from the bottom.

FIG. 4 is a view showing a mechanism in which a switch is turned off when cutting is completed when the portable band saw of the present invention is used as a horizontal band saw.

FIG. 5 is a view showing an elastic plate that holds a state in which a frame fixing rod is moved to a position where a switch is turned on and off.

FIG. 6 is a view showing a storage portion for a band saw provided on the bottom surface of the bed.

[Explanation of symbols]

 1 Bed 1a Tip part 1b Base end part 1c Leg part 1d Rib 2 Mounting table 3 Fixed vise 4 Movable vise 4a Handle 4b Push rod 5 Frame 5a Base end part 5b Engagement groove 5c Second engagement groove 6 Spindle 7 Motor 8 Endless Saw Blade 8a Exposed part within a predetermined range 8a 'Exposed lower end part 8a "Exposed upper end part 9 Table 10 Frame fixing rod 10a Tip part 10b Pin 11 Switch 11a Pressing piece 12 Stopper 13 Elastic plate 13a Valley part 13b Valley part 14 Storage part 15 Foot plate 15a Side edge 16 Support piece 17 Support piece 18 Fall-out prevention protrusion 19 Handle 19 'Handle 20 Cord

Claims (4)

[Scope of utility model registration request] 1. A bed having a mounting table for the material to be cut and a vise for fixing the material to be cut, and a base end portion rotatably supported by a tip end of the bed via a support shaft and driven by a motor. When cutting the material to be cut with the endless saw blade in this vertical state, the endless saw blade is exposed in a predetermined range, and is exposed at the lower end when the endless saw blade is pivotally fixed so as to be vertical. A portable band saw, comprising a frame provided with a table on which the material to be cut is placed. 2. A frame fixing rod for fixing a frame in a vertical state by locking a tip end of the bed to a base end of the frame which is rotated in a vertical state by being operated on a base end side thereof. If you move this frame fixing rod manually in one direction at a right angle to the axial direction, it will be turned on, and if you move it in the other direction, it will be turned off. A switch is provided for turning on and off the power of the motor by moving the frame fixing rod in the other direction by the table to turn it off when the material is completely cut by the endless saw blade. The portable band saw according to 1. 3. The portable band saw according to claim 1, wherein a storage section for storing an endless saw blade curved in a substantially concave shape is provided on a bottom surface of the bed. 4. The bed according to claim 1, wherein a foot plate is provided in the base end portion of the bed so that the foot can be stowed / pulled out so that the weight is not fallen when the frame is vertically fixed. Portable band saw as described.