CN2219172Y

CN2219172Y - Hand band sawing machine

Info

Publication number: CN2219172Y
Application number: CN 94245786
Authority: CN
Inventors: 廖威盛
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-11-28
Filing date: 1994-11-28
Publication date: 1996-02-07
Anticipated expiration: 2004-11-28

Abstract

The utility model relates to a hand band sawing machine with characteristics of convenient carrying, smart use, high cutting speed and large cutting quantity, comprising a rotary arm, a saw blade positioning mechanism, a saw blade tightening mechanism, etc. The arm seat of the rotary arm is fixedly arranged in the arc-shaped groove of a machine table for regulating the cutting angle of the saw blade, a positioning pin is arranged on the rotary arm, so the rotary arm matches the positioning hole of a sawing frame to lock and fix the saw frame. Rollers are arranged in the saw blade positioning mechanism to pilot the verticality of the saw blade, the saw blade positioning mechanism is regulated to assist the rigidity of the saw blade, and contact position between the saw blade and a rotating disk can be limited to prevent deviation. A hand wheel and a grip of the saw blade tightening mechanism can quickly release the saw blade for the replacement or tight adjustment of the saw blade, and a spring is abutted with an adjusting ring for positioning the rotating disk.

Description

Portable band sawing machine

The utility model relates to a kind of portable band sawing machine.

The cutting machine that general tradition is carried outer removing from mould is nothing more than abrasive wheel cutting machine or be circular sawing machine, and as shown in Figure 1, 2, so it has following shortcoming:

1. abrasive wheel cutting machine can't heavy cut, and only can be fit to the cutting of thin metal.

2. the abrasion of the emery wheel of abrasive wheel cutting machine are big, must often change grinding wheel, troublesome poeration.

3. this emery wheel thinner thickness, flexible big deflection distortion easily, the metal that is cut can't cut into vertical plane.

4. though the metal circular saw rigidity is bigger, but be fit to heavy cutting, but the coping saw blade manufacturing is loaded down with trivial details, and cost an arm and a leg, therefore can't popularize use.

5. the cut coverage of saw blade is limited, limits the size of being cut, and often can't satisfy user's demand.

The purpose of this utility model is to overcome the shortcoming of above-mentioned conventional cutter, provides a kind of cut coverage big, and cutting efficiency is good, and can be fit to heavy cutting and portable band sawing machine easy to carry.

According to the utility model, a kind of portable band sawing machine is provided, include: spiral arm, its arm seat with bolting on board, this board is provided with deep-slotted chip breaker, the board surface of deep-slotted chip breaker side is provided with the angle index, and one of armed lever end drives and establishes on the saw frame in addition, and this saw frame and armed lever lock with suitable coupling mechanism force by bolt; Wherein this band sawing machine also comprises: the saw blade detent mechanism is the saw blade appropriate location that is fixedly arranged on saw frame, is provided with roller in the saw blade both sides, is fixedly arranged on the fixed mount by bolt; Saw blade degree of tightness guiding mechanism is provided with a handwheel, is solidified as a whole with the bolt bolt, this bolt revolves to be locked in the handle, bolt also gos deep into saw frame inside, and its sheathed spring is also locked in the screwed hole of adjusting one of the ring side, and this adjustment ring set is established a bearing and is positioned in the rotating shaft; By above-mentioned arm seat structure, can make suitable saw cutting angle and the arc displacement of saw blade rotation come sawing workpieces, the roller of saw blade detent mechanism can the correcting saw blade and the perpendicularity of workpiece, and other is by the elasticity of handwheel rapid adjustment saw blade.

For purpose and effect to the utility model have understanding more completely, conjunction with figs. is described in more detail in the back with regard to structure, the composition of the utility model now:

Fig. 1 is the traditional type abrasive wheel cutting machine;

Fig. 2 is the traditional type circular sawing machine;

Fig. 3 A is the stereo appearance figure of the utility model;

Fig. 3 B is the stereo appearance figure of another angle of the utility model;

Fig. 4 A and 4B are the partial sectional view and the partial side views of the cantilever mechanism of the utility model;

Fig. 5 A and 5B are the angle adjustment schematic diagrames of the utility model;

Fig. 6 is the schematic perspective view of the utility model band saw blade clamping device;

Fig. 7 A and 7B are the schematic diagrames of the utility model band saw blade degree of tightness guiding mechanism.

In the accompanying drawing:

1 spiral arm, 33 handles

11 arm seats, 34 springs

12 armed levers 35 are adjusted ring

13,14,22,32 bolts, 351 screwed holes

15 pilot pins, 352 bearings

36 rotating shafts of 2 saw blade detent mechanisms

21 rollers, 37 rotating disks

23 fixed mounts, 38 rubber layers

24 slides, 4 boards

241 adjust slide opening 41 deep-slotted chip breakers

25 handles, 5 saw frames

3 saw blade degree of tightness guiding mechanisms, 51 saw blades

31 handwheels, 52 locating holes

At first see also shown in Fig. 3,4,5,6,7, the portable band sawing machine of the utility model comprises spiral arm 1, saw blade detent mechanism 2 and a saw blade degree of tightness guiding mechanism 3, wherein:

Spiral arm 1, its wall seat 11 are to be fixedly arranged on the board 4 with bolt 13, and this board 4 is provided with deep-slotted chip breaker 41, are provided with the angle index in board 4 surfaces of deep-slotted chip breaker 41 lateral margins; One of armed lever 12 end drives and is located at saw frame 5 in addition, and as Fig. 3 B, shown in Figure 4, armed lever 12 utilizes bolt 14 with suitable coupling mechanism force locking with saw frame 5, and so that saw frame 5 is that axle rotates with bolt 14, make the sawing that descended of saw blade 51 in the rotation; This armed lever 12 and sheathed pilot pin 15, and prevent that with C shape clasp 151 pilot pin 15 from deviating from, be provided with a locating hole 52 in saw frame 5 relative position places in addition.

Saw blade detent mechanism 2, it is the appropriate location, saw blade 51 two ends that is fixedly arranged on the sawing limit of saw frame 5, be provided with roller 21 in saw blade 51 both sides, be fixedly arranged on the fixed mount 23 by bolt 22, this fixed mount 23 extends a slide 24, this slide 24 is provided with one and adjusts slide opening 241, by handle 25 lockings (being provided with bolt in this handle 25); And adjustable saw bar detent mechanism 2 adjusted the rigidity of saw blade 51 in the appropriate location, and the saw blade detent mechanism 2 of end is fixed being fixedly arranged on the saw frame 5 in addition.

Saw blade degree of tightness guiding mechanism 3, be provided with a handwheel 31, be solidified as a whole with bolt 32 bolts, this bolt 32 revolves to be locked in the handle 33, bolt 32 also gos deep into saw frame 5 inside, its sheathed compression spring 34, and lock in the screwed hole 351 of adjusting one of ring 35 side, these adjustment ring 35 sheathed bearings 352 also are positioned in the rotating shaft 36.

The use of the utility model and effect explanation as back:

One, spiral arm action:

See also shown in Fig. 4 A and the 4B, when saw frame 5 during in the extreme lower position of cutting, pilot pin 15 is able to involutory saw frame 5, and pilot pin 15 is sleeved in the locating hole 52, and fixedly saw frame 5; When pilot pin 15 disengaging locating holes 52, saw frame 5 is able to bolt 14 for pivot is done on the radian, displacement down, is able to sawing workpieces when saw blade 51 transmissions.

Two, angle adjustment:

When the workpiece of sawing has the variation of angle, can adjust the angle of arm seat 11 and board 4, shown in Fig. 5 A and 5B, pine oil bolt 13 makes arm seat 11 adjust suitable angle, makes saw blade 51 adjust required saw cutting angle thereupon.

Three, the adjustment of saw blade rigidity

Supporting saw blade 51 by the roller 21 of saw blade detent mechanism 2 makes the saw blade in the transmission be able to keep vertical with the workpiece of sawing, the sharp keen and sawing steady and smooth of maintenance saw blade 51; The longer tool flexibility that then heals of saw blade 51 is the suitable rigidity that keeps saw blade 51 in addition, the distance of adjustable saw sheet detent mechanism 2; And saw blade 51 detent mechanisms 2 more have the saw blade that limits the revolution sawing to keep contacting with the rubber layer 38 of rotating disk 37, do not have the anxiety that comes off, as shown in Figure 7.

Four, the degree of tightness of saw blade or displacement:

See also shown in Figure 7ly, unscrew handwheel 31, spring 34 ejection adjustment rings 35 so that drive on the rotating disk 37 around saw blade 51 and pine oil saw blade 51 is replaced saw blade 51; Screw handwheel 31 in the other direction, gripping simultaneously fixedly handle 33 is unlikely with handwheel 31 rotations, and pulling is adjusted the saw blade 51 on ring 35 and then the drive rotating disk 37 and given urgent fixing; These compression spring 34 ejection adjustment rings 35 make rotating disk 37 be located and do not rock, handwheel 31 and handle 33 counter-rotating and lock mutually and locate respectively when saw blade 51 is adjusted the location.

Can be learnt by above-mentioned explanation and the utlity model has following progress advantage:

(1) external form light and handy, carry and move conveniently.

(2) with line transmission saw blade mode row cutting work, can reach the effect of heavy cutting.

(3) saw blade can make saw blade and workpiece keep perpendicularity by the saw blade location structure, is beneficial to cut stationarity and keeps sharp keen and bigger excision amount.

(4) adjust between the saw blade location structure apart from rigidity, to be fit to the sawing of dissimilar workpiece materials with the adjustment saw blade.

Can be positioned the rubber layer of rotating disk when (5) the saw blade location structure must make saw blade cutting work and keep in touch unlikely slippage.

(6) angle of adjustment arm seat is adjusted the cutting angle of saw blade and workpiece.

(7) folded saw frame and fixed it by pilot pin and cooperating of locating hole.

(8) degree of tightness of saw blade and displacement are easy and fast convenient:

In sum, the utility model has above-mentioned progress effect really, and practicality is good, convenient in carrying, and operation is dexterous, provides like product breakthrough function development.

Claims

1. portable band sawing machine includes:

On board, this board is provided with deep-slotted chip breaker with bolting for spiral arm, its arm seat, and the board surface of deep-slotted chip breaker side is provided with the angle index, and one of armed lever end drives and establishes on the saw frame in addition, and this saw frame and armed lever lock with suitable coupling mechanism force by bolt;

It is characterized in that this band sawing machine also comprises:

The saw blade detent mechanism is the saw blade appropriate location that is fixedly arranged on saw frame, is provided with roller in the saw blade both sides, is fixedly arranged on the fixed mount by bolt;

Saw blade degree of tightness guiding mechanism is provided with a handwheel, is solidified as a whole with the bolt bolt, this bolt revolves to be locked in the handle, bolt also gos deep into saw frame inside, and its sheathed spring is also locked in the screwed hole of adjusting one of the ring side, and this adjustment ring set is established a bearing and is positioned in the rotating shaft;

Above-mentioned arm seat structure can make suitable saw cutting angle and the arc displacement of saw blade rotation come sawing workpieces, and the roller of saw blade detent mechanism can the correcting saw blade and the perpendicularity of workpiece, and other is by the elasticity of handwheel rapid adjustment saw blade.

2. portable band sawing machine according to claim 1, it is characterized in that, the sheathed pilot pin of the armed lever of spiral arm, and prevent that with C shape clasp pilot pin from deviating from, relative position place in saw frame is provided with a locating hole, this saw frame is when the cutting extreme lower position, and locating hole is able to involutory pilot pin and bolt fixed bit saw frame.

3. portable band sawing machine according to claim 1, it is characterized in that, the fixed mount of saw blade detent mechanism is extended with a slide, this slide is provided with one and adjusts slide opening, lock by handle, and adjustable saw bar detent mechanism is in the appropriate location, adjusts the suitable rigidity of saw blade and location saw blade and prevents rubber layer disengaging with rotating disk.