CN211517750U

CN211517750U - Arc-shaped small wheel conduction band multi-blade band saw and multi-blade band sawing machine

Info

Publication number: CN211517750U
Application number: CN201922419146.0U
Authority: CN
Inventors: 卢建军
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-18
Anticipated expiration: 2029-12-30

Abstract

The utility model belongs to material cutting processing equipment field, concretely relates to arc steamboat conduction band multi-disc band saw and multi-disc band saw machine, wherein arc steamboat conduction band multi-disc band saw is including installing arc driven pulley area and the arc guide pulley area on the bed plate, arc driven pulley area is set up and is arc distribution's from the driving wheel group by a plurality of intervals each other, arc guide pulley area is set up and is arc distribution's guide pulley group by a plurality of intervals each other, and the action wheel left side has radially arranged along it and has multichannel arc driven pulley area, and arc driven pulley area all arches towards the left side, and every arc driven pulley area all passes through drive belt wiring action wheel, and action wheel top and below have radially arranged along it respectively and have multichannel arc guide pulley area, and the arc guide pulley area of action wheel top all arches up, and the arc guide pulley area of action wheel below all arches down, and each band saw connects arc driven pulley area and action wheel and go up and arch up, The arc guide wheel belt of each way of below, the utility model discloses the multi-disc band saw is small, make cutting effect good easily.

Description

Arc-shaped small wheel conduction band multi-blade band saw and multi-blade band sawing machine

Technical Field

The utility model belongs to material cutting processing equips the field, concretely relates to arc steamboat conduction band multi-disc band saw and multi-disc band saw machine.

Background

In order to cut the material into sheet-like sheets of a certain thickness, band sawing machines are often used. The band saw machine generally includes two driving and driven band saw wheels and other auxiliary devices for tensioning and lubricating, etc. which are set on the base plate, when it is worked, the band saw blade is winded on two band saw wheels, in which the driving wheel can be driven by external force to rotate, and can drive the band saw to make high-speed movement around the driven wheel, and can push the material into the band saw mouth, and the tensioned band saw can cut the material. The prior art has a multi-blade band sawing machine with a plurality of band sawing blades, such as an automatic distance-adjusting multi-blade band sawing machine with the publication number of CN103934863A, the band sawing machine is provided with a plurality of groups of band sawing blades along the material conveying direction, although the feeding can be cut into a plurality of plates at a time, because a plurality of saw blades are arranged in front and at the back, the multi-blade band sawing machine can only process regular long materials, for example, in the practical use, when wood with certain bending in the long direction needs to be cut, the multi-blade band sawing machine cannot slightly adjust the material conveying direction according to the wood shape trend, which causes material waste and poor plate sawing effect; the band saw has the advantages of complex structure, large volume, high maintenance requirement and high manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a small, simple structure, the efficient arc steamboat conduction band multi-disc band saw of cutting and multi-disc band saw machine.

The technical proposal for realizing the purpose of the utility model is that,

a multi-blade band saw with arc-shaped small wheel guide band comprises a band saw blade, a transmission belt, a driving wheel arranged on a base plate, a saw material port arranged on the right side of the driving wheel, an arc-shaped driven wheel band and an arc-shaped guide wheel band arranged on the base plate,

the arc-shaped driven wheel belt is composed of a plurality of driven wheels which are arranged at intervals and distributed in an arc shape, the connecting line of the axle centers of the two driven wheels at the head and the tail of the arc-shaped driven wheel belt is a cross line,

the arc-shaped guide wheel belt consists of a plurality of guide wheels which are arranged at intervals and distributed in an arc shape,

a plurality of arc-shaped driven wheel belts are arranged on the left side of the driving wheel along the radial direction of the driving wheel, the arc-shaped driven wheel belts are arched towards the left side, the cross lines of the arc-shaped driven wheel belts are parallel to each other, the length of the cross lines is gradually increased from right to left, the connecting lines of the mid points of the cross lines of all the arc-shaped driven wheel belts are on the same straight line and pass through the axis of the driving wheel, each arc-shaped driven wheel belt is wound on the driving wheel through a transmission belt,

a plurality of arc-shaped guide wheel belts are respectively arranged above and below the driving wheel along the radial direction of the driving wheel, the arc-shaped guide wheel belts above the driving wheel are arched upwards, the arc-shaped guide wheel belts below the driving wheel are arched downwards,

when the saw blade device works, a plurality of band saw blades are sequentially arranged from inside to outside along the radial direction of the driving wheel, each band saw blade is wound on one arc-shaped driven wheel belt and one arc-shaped guide wheel belt on the upper side and the lower side of the driving wheel, and the band saw blades passing through the saw material port are mutually parallel.

Further comprises an upper blade distance adjusting plate, a lower blade distance adjusting plate, a guide wheel ribbon plate and a saw blade tensioning device,

the sheet distance adjusting plate is rotatably arranged on the base plate and is provided with a positioning device, the upper sheet distance adjusting plate is arranged above the driving wheel, the lower sheet distance adjusting plate is arranged below the driving wheel,

the guide wheel lath is an installation bottom plate of the arc-shaped guide wheel belt, each arc-shaped guide wheel belt is provided with a guide wheel lath, the guide wheel laths are installed on the sheet-distance adjusting plate, the rotating shafts of the guide wheels at the rightmost end of the arc-shaped guide wheel belt on the upper sheet-distance adjusting plate are uniformly arranged on the same straight line, the rotating shafts of the guide wheels at the rightmost end of the arc-shaped guide wheel belt on the lower sheet-distance adjusting plate are uniformly arranged on the same straight line and the distance between the rotating shafts of the guide wheels at the rightmost end of the arc-shaped guide wheel belt on the upper sheet-distance adjusting plate,

the guide wheel lath corresponding to at least one arc guide wheel belt of the upper and lower arc guide wheel belts sleeved by the same belt saw blade can be rotatably arranged on the blade distance adjusting plate, the rotatable guide wheel lath takes the rotating shaft of the rightmost guide wheel arranged on the rotatable guide wheel lath as the rotating shaft, and the rotatable guide wheel lath is also provided with a saw blade tensioning device which can enable the rotatable guide wheel lath to rotate upwards or downwards.

Further, the saw blade tensioning device comprises a strip guide post and a first arc strip hole/groove arranged on the strip distance adjusting plate, the first arc strip hole/groove takes the rotating shaft of the rotatable guide wheel strip as the circle center, the outer diameter of the guide post is matched with the width of the first arc strip hole/groove, one end of the guide post is fixed on the rotatable guide wheel strip, and the other end of the guide post is inserted into the first arc strip hole/groove.

Further, saw bit overspeed device tensioner includes driving lever, poking rod axle and cylinder, and the driving lever passes through the poking rod axle and can rotate to be installed on the bed plate, and the one end of driving lever links to each other with the cylinder, the other end with but the guide pulley slat slides and links to each other, and under the cylinder effect, the driving lever stirs but the guide pulley slat rotates upwards or downwards.

Furthermore, positioner includes positioning bolt and the second circular arc strip hole of setting on the bed plate, and second circular arc strip hole uses the pivot of piece apart from the adjusting plate as the centre of a circle, and the width adaptation in positioning bolt external diameter and second circular arc strip hole, positioning bolt pass second circular arc strip hole from the rear of bed plate and install on piece apart from the adjusting plate, and during operation, positioning bolt fixes the piece apart from the adjusting plate on the bed plate.

Furthermore, the guide wheel ribbon boards arranged on the upper sheet distance adjusting plate are all rotatable guide wheel ribbon boards.

Furthermore, the rotating shafts of the upper and lower sheet distance adjusting plates are arranged on the base plate in an up-down symmetrical manner by taking the driving wheel as a reference.

Furthermore, the connecting line of the upper sheet from the guide wheel at the rightmost end of the innermost arc-shaped guide wheel belt on the adjusting plate and the rightmost end of the outermost arc-shaped guide wheel belt on the adjusting plate is an upper adjusting line, the connecting line of the lower sheet from the guide wheel at the rightmost end of the innermost arc-shaped guide wheel belt on the adjusting plate and the guide wheel at the rightmost end of the outermost arc-shaped guide wheel belt on the adjusting plate is a lower adjusting line, the distance between the upper sheet from the rotating shaft of the adjusting plate and the rotating shaft of the guide wheel at the rightmost end of the innermost arc-shaped guide wheel belt on the adjusting plate is a, the distance between the lower sheet from the rotating shaft of the adjusting plate and the rotating shaft of the guide wheel at the rightmost end of the outermost arc-shaped guide wheel belt on the adjusting plate is b, a is equal to b, the distance between the upper sheet from the rotating.

The utility model discloses an arc steamboat conduction band multi-disc band saw forms arc from driving wheel with a plurality of minor diameters from the driving wheel and takes, arc from driving wheel area and action wheel round-trip, driving belt transmits power simultaneously for a plurality of from the driving wheel, the band saw piece is by the tensioning on arc from driving wheel area and arc guide pulley area, the band saw piece receives from the frictional force effect of driving wheel, around arc from driving wheel area and upper and lower arc guide pulley area motion, and then can cut the material that passes through from the saw material mouth. The utility model discloses upper and lower arc guide pulley area plays tensioning band saw bit effect, can set up the upper and lower arc guide pulley area of multichannel arc driven pulley area and the multichannel that corresponds along the action wheel radially from inside to outside, and then can drive a plurality of band saw pieces in the coplanar, guarantees that the saw bit parallel of saw material mouth can once saw into a plurality of slice panels.

The utility model discloses an arc steamboat conduction band multi-disc band saw has following part or whole technological effect at least: firstly, the volume is small, the structure is simple, the utility model uses one driving wheel to set a plurality of band saw blades in one plane to cut the feeding material into a plurality of plates at one time, and compared with the prior art, the structure is simpler as the occupied space of a plurality of driving wheels and driven wheel groups is smaller when the same effect is realized; secondly, the cutting effect is good, the band saw blades of the multi-blade band saw with the arc-shaped small wheel conduction band are all in the same plane, and when wood with certain bending in the length direction is cut, the material conveying direction can be adjusted to adapt to the bending shape of the wood, so that the blanking rate is improved; the thickness of the cut plate is adjustable, and the distance between the saw blades passing through the saw material opening can be adjusted by changing the inclination angle of the upper adjusting line and the lower adjusting line through the rotating piece and the adjusting plate, so that the purpose of adjusting the cutting thickness is achieved.

The utility model also provides a multi-disc band saw machine, including foretell miniwheel conduction band multi-disc band saw, this miniwheel conduction band multi-disc band saw of arc is first multi-disc band saw, still includes mount pad, second multi-disc band saw and maintenance device, and the structure of second multi-disc band saw is mirror symmetry setting about with first multi-disc band saw, first, two multi-disc band saws can slide in opposite directions and set up respectively on the left side and the right side of mount pad, the during operation the maintenance device is fixed first, two multi-disc band saws on the mount pad. The multi-blade band saw machine can cut plates which are twice as large as the arc-shaped small wheel conduction band multi-blade band saw at one time without increasing the height and the width of the arc-shaped small wheel conduction band multi-blade band saw, and has simple realized structure and easy manufacture; the space between the first and second multi-piece band saws is increased, and the multi-piece band saw machine can also cut two sides of a super-wide plate when feeding the super-wide plate, so that the adaptability to the width of the plate is good, and the work efficiency is high.

It should be noted that the "inner" and "outer" in the present application refer to the radial direction of the driving wheel, and are inward when approaching the axis of the driving wheel, and outward when departing from the axis of the driving wheel. It should be clear that the person skilled in the art should know that it is not limited to the following: the arc-shaped transmission belt and the arc-shaped guide belt not only comprise arc-shaped shapes, but also comprise other similar arc-shaped shapes which can achieve the same effect; rotating shafts of all guide wheels, driven wheels and driving wheels in the scheme are vertical to the surface of the base plate; the plane in the same plane is referred to as the surface of the base plate.

Drawings

FIG. 1 is a schematic view of a multi-blade band saw with arc-shaped small wheels for guiding a belt according to an embodiment;

FIG. 2 is a schematic view of adjustment of cutting thickness of a multi-blade band saw with an arc-shaped small wheel guide belt according to an embodiment;

FIG. 3 is a schematic structural view of an embodiment of a multi-blade band saw machine according to the present invention.

In the figure, 1, a base plate; 2. a driving wheel; 3. sawing the material port; 4. a drive belt; 5. a band saw blade; 6. an arc-shaped transmission belt; 7. an arc-shaped guide pulley belt; 7-1, guide wheel lath; 801. an upper plate distance adjusting plate; 802. a lower sheet distance adjusting plate; 8-1. a rotating shaft of the upper plate distance adjusting plate; 8-11. a rotating shaft for lowering the distance adjusting plate; 8-2, positioning a bolt; 8-3, a second arc strip hole; 9-1, a first arc strip hole; 9-2. lath guide post; 9-3, a deflector rod; 9-4. a cylinder; 9-5, a poke rod shaft; 11. adjusting the line upwards; 22. adjusting the line downwards; 31. a first plurality of band saws; 13. a second plurality of band saws; 44. a mounting seat; 55. a retention device.

Detailed Description

The present invention will be described in detail with reference to examples.

Referring to fig. 1, the multi-blade band saw with the arc-shaped small wheel guide belt comprises a band saw blade 5, a transmission belt 4, a driving wheel 2 arranged on a base plate 1, a saw opening 3 arranged on the right side of the driving wheel 2, an arc-shaped driven wheel belt 6, an arc-shaped guide wheel belt 7, a blade distance adjusting plate, a guide wheel slat 7-1 and a saw blade tensioning device,

the arc-shaped driven belt 6 is composed of a plurality of driven wheels which are arranged at intervals and distributed in an arc shape, the connecting line of the axle centers of the two driven wheels at the head and the tail of the arc-shaped driven belt 6 is a cross line, the arc-shaped driven belt 6 is directly arranged on the base plate 1,

the arc-shaped guide wheel belt 7 consists of a plurality of guide wheels which are arranged at intervals and distributed in an arc shape,

the piece distance adjusting plate is rotatably arranged on the base plate 1 and is provided with a positioning device, the positioning device comprises a positioning bolt 8-2 and a second arc strip hole 8-3 arranged on the base plate 1, the second arc strip hole 8-3 takes a rotating shaft of the piece distance adjusting plate as a circle center, the outer diameter of the positioning bolt 8-2 is matched with the width of the second arc strip hole 8-3, the positioning bolt 8-2 penetrates through the second arc strip hole 8-3 from the rear part of the base plate 1 and is arranged on the piece distance adjusting plate,

the upper and lower parts of the driving wheel are respectively provided with a sheet distance adjusting plate, the upper sheet distance adjusting plate 801 is arranged above the driving wheel 2, the lower sheet distance adjusting plate 802 is arranged below the driving wheel 2,

a plurality of arc-shaped driven wheel belts 6 are arranged on the left side of the driving wheel 2 along the radial direction, the arc-shaped driven wheel belts 6 are arched towards the left side, the cross lines are parallel to each other, the length of the cross lines is gradually increased from right to left, the connecting lines of the mid points of the cross lines of all the arc-shaped driven wheel belts 6 are on the same straight line and pass through the axis of the driving wheel 2, each arc-shaped driven wheel belt 6 is in winding connection with the driving wheel 2 through a transmission belt 4, the relative positions of the cross lines of each arc-shaped driven wheel belt 6 and the axis of the driving wheel 2 are set, so that the transmission belts in winding connection with each arc-shaped driven wheel belt 6 can be simultaneously sleeved on the driving wheel 2 in the,

a plurality of arc-shaped guide wheel belts 7 are respectively arranged upwards and downwards on the upper and lower sheet distance adjusting plates along the radial direction of the driving wheel, each arc-shaped guide wheel belt 7 is arranged on a guide wheel lath 7-1, the guide wheel laths 7-1 are arranged on the sheet distance adjusting plate, the arc-shaped guide wheel belts 7 on the upper sheet distance adjusting plate 801 are all arched upwards, the rotating shafts of the guide wheels at the rightmost ends of the arc-shaped guide wheel belts 7 on the upper sheet distance adjusting plate 801 are uniformly arranged on the same straight line, the connecting line of the rotating shafts of the guide wheels at the rightmost ends of the arc-shaped guide wheel belts at the innermost side and the outermost side on the upper sheet distance adjusting plate 801 is an upper adjusting line 11, the arc-shaped guide wheel belts 7 on the lower sheet distance adjusting plate 802 are all arched downwards, the rotating shafts of the arc-shaped guide wheels at the rightmost ends of the arc-shaped guide wheel belts 7 on the lower sheet distance adjusting plate 802 are uniformly arranged on the same straight line and have the same distance with the rotating shafts of the, the connecting line of the rotating shafts of the guide wheels at the rightmost ends of the arc-shaped guide wheel belts 7 at the innermost side and the outermost side on the lower sheet distance adjusting plate 802 is a lower adjusting line 22,

in the embodiment, a rotating shaft 8-1 of an upper sheet distance adjusting plate and a rotating shaft 8-11 of a lower sheet distance adjusting plate are vertically and symmetrically arranged on a base plate 1 by taking a driving wheel 2 as a reference, the distance between the rotating shaft 8-1 of the upper sheet distance adjusting plate and a rotating shaft of a guide wheel at the rightmost end of an innermost arc-shaped guide wheel belt on the upper sheet distance adjusting plate is a, the distance between the rotating shaft 8-11 of the lower sheet distance adjusting plate and a rotating shaft of a guide wheel at the rightmost end of the innermost arc-shaped guide wheel belt on the lower sheet distance adjusting plate is b, a is equal to b, the distance between the rotating shaft 8-1 of the upper sheet distance adjusting plate and a rotating shaft of a guide wheel at the rightmost end of an outermost arc-shaped guide wheel belt on the upper sheet distance adjusting plate is c, the distance between the rotating shaft 8-11 of the lower sheet distance adjusting plate and a rotating shaft of a guide wheel at the rightmost end of an outermost arc-shaped guide wheel belt on the lower sheet distance adjusting, and ensures that the band saw blades 5 vertically pass through the sawing port 3,

the guide wheel laths 7-1 on the upper blade distance adjusting plate 801 can rotate, the rotating shafts of the rightmost guide wheels arranged on the upper blade distance adjusting plate 801 respectively serve as rotating shafts, and a saw blade tensioning device for enabling the upper blade distance adjusting plate to rotate upwards is correspondingly arranged on each rotating shaft, the saw blade tensioning device comprises a lath guide post 9-2, a first arc strip hole 9-1, a deflector rod 9-3, a deflector rod shaft 9-5 and a cylinder 9-4, the first arc strip hole 9-1 is arranged on the upper blade distance adjusting plate 801 by taking the rotating shaft of the corresponding guide wheel lath 7-1 as a circle center, the outer diameter of the lath guide post 9-2 is matched with the width of the first arc strip hole 9-1, one end of the lath guide post 9-2 is fixed on the rotatable guide wheel lath 7-1, the other end of the lath guide post penetrates through the first arc strip hole 9-1, one end of the deflector rod 9-3 is connected with the cylinder 9-4, the other end is connected with the rotatable guide wheel slat 7-1 in a sliding way, under the action of the cylinder 9-4, the deflector rod 9-3 deflects the guide wheel slat 7-1 to rotate upwards, the guide wheel slat 7-1 always has the upward rotating trend in work, the band saw blade 5 wound on the arc-shaped guide wheel 6 is ensured to be always tensioned,

a plurality of band saw blades 5 are sequentially arranged from inside to outside along the radial direction of the driving wheel 2, each band saw blade 5 is wound and connected with an arc-shaped driven wheel belt 6 and an arc-shaped guide wheel belt 7 on the upper blade distance adjusting plate 801 and the lower blade distance adjusting plate 802, and the band saw blades 5 passing through the saw material opening 3 are parallel to each other.

When the thickness of the plate cut by the arc-shaped small wheel conduction band multi-blade band saw needs to be adjusted, referring to fig. 1 and fig. 2, the upper blade distance adjusting plate and the lower blade distance adjusting plate can be adjusted in a rotating mode, when the upper adjustment line 11 rotates clockwise and the lower adjustment line 12 rotates anticlockwise simultaneously, the distance between the band saw blades 5 through the saw material opening 3 is increased, when the upper adjustment line 11 rotates anticlockwise and the lower adjustment line 12 rotates clockwise simultaneously, the distance between the band saw blades 5 through the saw material opening 3 is reduced, after the distance between the band saw blades 5 is adjusted to the required thickness of plate blanking, the positioning bolt 8-2 is screwed tightly, and the blade distance adjusting plates are fixed on the base plate 1.

FIG. 3 shows a multi-blade band saw machine provided by the present invention, which comprises the above-mentioned embodiment of the arc-shaped small wheel band-guiding multi-blade band saw, the arc-shaped small wheel conduction band multi-piece band saw is a first multi-piece band saw 31, and further comprises a mounting seat 44, a second multi-piece band saw 13 and a fixing device 55, the structure of the second multi-piece band saw 13 and the first multi-piece band saw 31 are arranged in a left-right mirror symmetry manner, the first multi-piece band saw and the second multi-piece band saw can slide oppositely and are respectively arranged on the left side and the right side of the mounting seat 44, the fixing device fixes the first multi-piece band saw and the second multi-piece band saw on the mounting seat during working, the mounting seat 44 is frame-shaped, the first multi-piece band saw and the second multi-piece band saw are arranged in guide, the fixing device is in a spiral rod structure, can fix the first band saw and the second band saw and can push and pull the first band saw and the second band saw to move on the guide rail through rotation, and the sawing ports 3 of the first band saw and the second band saw are adjacent. The band saw blades 5 can be additionally arranged on the multiple band saws with the arc-shaped small wheel guide belts to increase the one-time feeding amount, however, the method can cause the area of the multiple band saws with the arc-shaped small wheel guide belts to be too large, and in practice, many technical difficulties can be faced, and the multiple band saw machine can cut twice as many plates as the first multiple band saws 31 at one time without increasing the area of the multiple band saws with the arc-shaped small wheel guide belts, so that the realized structure is simple and the manufacture is easy; the space between the first and second multi-piece band saws is increased, and the multi-piece band saw machine can also cut two sides of a super-wide plate when feeding the super-wide plate, so that the adaptability to the width of the plate is good, and the work efficiency is high.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, and those skilled in the art can easily modify or substitute the technical features of the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A multi-blade band saw with arc small guide wheel is composed of a band saw blade, a drive belt, a drive wheel on a base plate, a saw blade opening on the right side of said drive wheel, an arc driven belt wheel and an arc guide belt wheel,

2. The multi-blade band saw with arc-shaped small wheel guide belt according to claim 1, further comprising an upper blade distance adjusting plate, a lower blade distance adjusting plate, a guide wheel blade and a saw blade tensioning device,

3. The multi-blade band saw with arc-shaped small wheel guide belt as claimed in claim 2, wherein the saw blade tensioning device comprises a guide post for guiding the blade and a first arc hole/groove provided on the blade distance adjusting plate, the first arc hole/groove is centered on the rotating shaft of the guide pulley blade, the outer diameter of the guide post is adapted to the width of the first arc hole/groove, one end of the guide post is fixed on the guide pulley blade, and the other end of the guide post is inserted into the first arc hole/groove.

4. The multi-blade band saw with small arc-shaped wheels and a guide belt as claimed in claim 3, wherein the saw blade tensioning device further comprises a deflector rod, a deflector rod shaft and a cylinder, the deflector rod is rotatably mounted on the base plate through the deflector rod shaft, one end of the deflector rod is connected with the cylinder, the other end of the deflector rod is slidably connected with the guide belt slat, and the deflector rod can move the guide belt slat to rotate upwards or downwards under the action of the cylinder.

5. The arc-shaped small wheel conduction band multi-blade band saw as claimed in claim 2, wherein the positioning device comprises a positioning bolt and a second arc-shaped hole arranged on the base plate, the second arc-shaped hole is centered on a rotating shaft of the blade distance adjusting plate, the outer diameter of the positioning bolt is matched with the width of the second arc-shaped hole, the positioning bolt penetrates through the second arc-shaped hole from the rear side of the base plate and is installed on the blade distance adjusting plate, and the positioning bolt fixes the blade distance adjusting plate on the base plate during operation.

6. The curved pinwheel belt multi-blade band saw as defined in claim 2, wherein the runner blades mounted on the upper blade distance adjustment plate are rotatable runner blades.

7. The multi-blade band saw with the arc-shaped small wheel and the guide belt as claimed in claim 2, wherein the rotating shafts of the upper and lower blade distance adjusting plates are vertically and symmetrically arranged on the base plate by taking the driving wheel as a reference.

8. The multi-blade band saw with small arc-shaped guide wheels as defined in claim 7, wherein the upper blade is connected to the rotation shaft of the guide wheel at the rightmost end of the arc-shaped guide wheel belt at the innermost side and the outermost side of the adjusting plate by an upward adjustment line, the lower blade is connected to the rotation shaft of the guide wheel at the rightmost end of the arc-shaped guide wheel belt at the innermost side and the outermost side of the adjusting plate by a downward adjustment line, the upper blade is connected to the rotation shaft of the guide wheel at the rightmost end of the arc-shaped guide wheel belt at the innermost side and the innermost side of the adjusting plate by a distance a, the lower blade is connected to the rotation shaft of the guide wheel at the rightmost end of the arc-shaped guide wheel belt at the innermost side and the innermost side of the adjusting plate by a distance b, a and b are equal, the upper blade is connected to the rotation shaft of the adjusting plate by a distance c, and the lower blade is connected to the rotation shaft.

9. A multi-piece band saw machine comprises the arc-shaped small wheel band guide multi-piece band saw as claimed in any one of claims 1 to 8, wherein the arc-shaped small wheel band guide multi-piece saw is a first multi-piece band saw, and the multi-piece band saw machine is characterized by further comprising a second multi-piece band saw, a mounting seat and a fixing device, the second multi-piece band saw and the first multi-piece band saw are arranged in a left-right mirror symmetry mode, the first multi-piece band saw and the second multi-piece band saw can slide oppositely and are arranged on the left side and the right side of the mounting seat respectively, and the fixing device fixes the first multi-piece band saw and the second multi-piece band saw on.