CN115383216B

CN115383216B - Band sawing machine

Info

Publication number: CN115383216B
Application number: CN202210790008.7A
Authority: CN
Inventors: 吕俊; 吕丽楠; 王葛勇; 项坚冰
Original assignee: ZHEJIANG HUJIN MACHINE TOOL CO LTD
Current assignee: ZHEJIANG HUJIN MACHINE TOOL CO LTD
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2023-06-02
Anticipated expiration: 2042-07-06
Also published as: CN115383216A

Abstract

The invention relates to the technical field of sawing equipment, in particular to a band sawing machine, which comprises a machine body, saw bands rotatably arranged on the machine body, two guide arms arranged on the machine body and a cleaning mechanism for cleaning the saw bands; the cleaning mechanism comprises a mounting seat and two cleaning members arranged on the mounting seat, and the cleaning members can freely turn over around a rotation axis; the scraping component comprises scraping plates, the two scraping plates are arranged oppositely, a spray head for spraying liquid is arranged on one side, far away from the saw band, of the scraping component, under the working state, the spray head sprays liquid to the scraping plates, and the scraping plates are driven to overturn under the impact force of the liquid so that the end sides of the scraping plates are abutted against the side walls of the saw band to realize scraping of the side walls of the saw band. The water flow sprayed by the spray head enables the cleaning component to overturn, so that the end side of the scraping plate is abutted against the saw belt, and therefore, scraps attached to the saw belt are scraped by the scraping plate, and the saw belt is prevented from bringing the scraps into the guide block.

Description

Band sawing machine

Technical Field

The invention relates to the technical field of sawing equipment, in particular to a band sawing machine.

Background

The band sawing machine is used as a high-efficiency cutting machine tool, is widely applied to cutting various workpieces, such as long-shaft metal parts and the like, and mainly realizes the cutting of the workpieces by virtue of an annular saw belt rotating at a high speed on a machine body.

For example, the invention of application number 201621284671.6 discloses a horizontal band sawing machine with a pressing mechanism, a guide arm is arranged on a cross beam, a guide head is arranged at the bottom end of the guide arm, the guide head comprises a guide body, one side of the guide body is provided with a bearing fixing mechanism, and the bearing fixing mechanism is provided with double rows of guide bearings, so that a saw band passes through the guide bearings after passing through the guide bodies, and the saw band sawing section is kept in a vertical state under the guidance of the guide body and the guide bearings.

The saw band guide head of the band sawing machine disclosed by the application number 201320668164.2 can be referred to for the guide blocks.

The existing saw band machine can realize good guide to the saw band by arranging the guide blocks, but in actual use, the abrasion of the guide blocks is very serious, and the main reason is that firstly, the saw band rubs with the guide blocks for a long time to cause abrasion to the guide blocks, and secondly, in the sawing process, some cutting scraps attached to the saw band are carried into the guide blocks along with the saw band, so that the abrasion of the guide blocks is further increased; therefore, in order to reduce cutting scraps and be brought into the guide block, the spray head is usually arranged at the side of the saw blade, the saw belt is washed by spraying water through the spray head, but the cleaning effect of the mode of only spraying water is general, and some scraps still adhere to the saw belt, so that in the related art, the scraping plate is arranged at the side of the saw belt, a spring is arranged, the scraping plate is kept in a state of being in contact with the saw blade through the spring so as to clean the saw blade, the scraping plate can clean the saw belt through the scraping plate, but the scraping plate always abuts against the saw belt under the action of the spring, even in a stopped state, the scraping plate abuts against the saw belt, the scraping plate is always in a stressed state, so that the scraping plate is easier to bend and deform, and the service life of the scraping plate is not facilitated.

Disclosure of Invention

In order to solve at least one technical problem mentioned in the background art, an object of the present invention is to provide a band sawing machine.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the band sawing machine comprises a machine body, saw bands and two guide arms, wherein the saw bands are rotatably arranged on the machine body, the guide arms are arranged on the machine body, one guide arm is positioned on the entering side of the saw bands, the other guide arm is positioned on the output side of the saw bands, the guide arms comprise guide heads for guiding the saw bands, the guide heads comprise two guide blocks which are oppositely arranged, the saw bands pass through the space between the two opposite guide blocks, the band sawing machine further comprises a cleaning mechanism for cleaning the saw bands, and the cleaning mechanism is arranged on the inner side of the guide block positioned on the output side of the saw bands along the advancing direction of the saw bands; the cleaning mechanism comprises a mounting seat and two cleaning members arranged on the mounting seat, the cleaning members can freely turn around a rotation axis, and the rotation axis is parallel to the side wall of the saw belt; the cleaning component comprises scrapers, the two scrapers are oppositely arranged, the saw belt passes through the two scrapers, a spray head for spraying liquid is arranged on one side, away from the saw belt, of the cleaning component, the spray direction of the spray head faces towards the corresponding scrapers, in a working state, the spray head sprays liquid to the scrapers, and the scrapers are driven to overturn under the impact force of the liquid so that the end sides of the scrapers are abutted against the side walls of the saw belt to clean the side walls of the saw belt.

Compared with the prior art, the scheme has the advantages that:

in this scheme, through setting up cleaning element and the shower nozzle including the scraper blade, so at the during operation, shower nozzle sprays liquid (such as coolant liquid or clear water etc.) to the scraper blade, shower nozzle spun rivers can produce a great impact force to the scraper blade for cleaning element overturns, and finally cleaning element can make scraper blade end side conflict on the saw band after the upset, so the saw band is convenient for constantly be scraped by the scraper blade in continuous operation in-process, thereby will adhere to the sweeps on the saw band through the scraper blade and strike off, prevent that the saw band from bringing these sweeps into the guide block.

It is worth noting that, the interference force that the scraper blade produced in this scheme comes from the rivers impact force of shower nozzle, so as long as the shower nozzle is continuous to spray water, the scraper blade just can be all the time with saw band lateral wall offset, and in case shut down the shower nozzle and stop spraying water, the scraper blade just no longer receives the impact force of rivers, just can not take place relative conflict with the saw band, be equivalent to the scraper blade no longer receives the effect of external force at this moment, just can not take place bending deformation easily, so more traditional mode that utilizes the spring to provide the interference force to the scraper blade, certainly more be favorable to the life of scraper blade.

Furthermore, in this scheme shower nozzle water spray not only can play the effect that provides the conflict to the scraper blade, shower nozzle spun water is along the scraper blade, will clear scrape the in-process adhesion sweeps on the scraper blade and wash away to can improve the clear effect of scraping of scraper blade.

Preferably, the mounting seat is fixedly provided with a rotating shaft, the scraping member is rotatably arranged on the rotating shaft by taking the central axis of the rotating shaft as a rotating axis, a water channel is arranged in the rotating shaft, and the rotating shaft is provided with a water inlet communicated with the water channel; the periphery wall of the rotating shaft is provided with a water outlet communicated with the water channel, and the spray head is arranged on the rotating shaft and is communicated with the water outlet.

Preferably, the water channel and the water outlet extend along the axial direction of the rotating shaft, and the spray head is a flat nozzle spray head.

Preferably, the scraping member further comprises a turning plate and a mounting frame, the turning plate rotates freely around the rotation axis, the mounting frame is arranged on the turning plate, and the scraping plate is detachably arranged on the mounting frame.

Preferably, the mounting frame comprises a connecting part for connecting the scraping plate and at least two guide rods fixed with the connecting part, the guide rods are movably arranged in the turning plate in a penetrating manner and can move between a first position and a second position along the direction perpendicular to the rotation axis, the connecting part is retracted into the mounting seat and is gathered with the turning plate in the first position, and the connecting part is positioned outside the mounting seat in the second position; the turning plate and the top of the connecting part are fixed relatively through a locking bolt arranged vertically; the top of the mounting seat is provided with an operation hole penetrating through the top wall of the mounting seat; when the flap is flipped to the assembled position and the guide bar is in the first position, the locking bolt is axially aligned with the operating aperture.

Preferably, a positioning piece for the turning plate to abut against is fixedly arranged in the mounting seat or on the spray head, and when the turning plate abuts against the positioning piece, the turning plate is positioned at the assembling position.

Preferably, the top of the turning plate is provided with a first jack, and the top of the connecting part is provided with a second jack, wherein the second jack is of a screw hole structure matched with the locking bolt; in the assembled state, the locking bolt is screwed into the second jack and then inserted into the first jack.

Preferably, the first receptacle and the second receptacle are axially aligned when the mount is abutted against the side wall of the flap on the opposite side; or, the top of the turning plate is provided with a notch, the first jack is arranged in the notch, the top of the connecting part is provided with a convex part extending towards one side close to the notch, the second jack is arranged on the convex part, and when the front end wall of the convex part abuts against the front end wall of the notch, the first jack and the second jack are axially aligned.

Preferably, the connecting portion comprises a side portion extending in the vertical direction, the scraping plate is mounted on the strip portion through a plurality of screws, and the screws are distributed at intervals in the vertical direction.

Preferably, the mounting base comprises two opposite side plates, and the spray head and the scraping member are positioned between the two side plates

Additional advantages and effects of the invention are set forth in part in the detailed description.

Drawings

FIG. 1 is a schematic view of the structure of the present invention at the position of a guide arm;

FIG. 2 is a cross-sectional view of a cleaning mechanism;

FIG. 3 is a schematic structural view of a cleaning mechanism;

FIG. 4 is a schematic view of the structure of the inside of the mounting base;

FIG. 5 is a schematic view of a portion of the structure of the mounting base when the guide bar is in the second position;

FIG. 6 is a schematic view of the scraping means with the guide bar in the second position;

fig. 7 is a schematic view of the internal structure of the flap;

fig. 8 is an axial sectional view of the rotary shaft.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-8, the present embodiment provides a band sawing machine, as shown in fig. 1, which mainly includes a machine body (not shown), a saw band 1 rotatably disposed on the machine body, and two guide arms 2 disposed on the machine body, wherein the saw band 1 has a ring structure, the saw band 1 is mounted on two driving wheels on the machine body, the two driving wheels rotate to drive the saw band 1 to rotate, and a sawing section is formed between the two guide arms 2 under the guidance of the two guide arms 2.

Along the advancing direction of the saw band, one of the two guiding arms 2 is positioned at the saw band entering side, the other guiding arm is positioned at the saw band outputting side, as shown in fig. 1, the saw band 1 rotates clockwise, at this time, the part of the saw band 1 between the two guiding arms 2 rotates from right to left, at this time, the right side is the saw band entering side, and the left side is the saw band outputting side.

As shown in fig. 1 and 2, the guide arm 2 includes a guide head 21 for guiding the saw band, the guide head 21 includes two guide blocks 211 that are oppositely disposed, a gap between the two guide blocks 211 is set to form a gap for the saw band 1 to pass through, and in operation, the saw band passes through the gap between the two opposite guide blocks 211, so that the saw band 1 is clamped by the two guide blocks 211, and the saw band 1 is ensured not to deflect during rotation.

It should be understood that, as shown in fig. 1, the guide head 21 further includes two rolling bearings 212 disposed side by side, and the two rolling bearings 212 are located at the outer sides of the guide block 211, where the outer sides refer to the sides of the two guide heads 21 away from each other, and the opposite sides of the two guide heads 21 are denoted as inner sides.

In order to clean the saw band 1 before the saw band 1 enters the left guide block 211, so as to avoid that the saw band 1 brings cutting scraps into the guide block 211, in this embodiment, the band sawing machine further comprises a cleaning mechanism for cleaning the saw band, and the cleaning mechanism is arranged on the inner side of the guide block 211 positioned on the output side of the saw band along the advancing direction of the saw band, that is, on the inner side of the left guide block 211, as shown in fig. 1.

The cleaning mechanism comprises a mounting seat 4 and two scraping members arranged on the mounting seat 4, wherein the mounting seat 4 can be arranged on the guide head 21 or the guide arm 2, and the cleaning mechanism is not particularly limited herein.

As shown in fig. 2-6, the scraping members can freely turn around a rotation axis L, the rotation axis L is parallel to the side wall of the saw belt, specifically, as shown in fig. 2 and 3, two vertically arranged rotating shafts 5 are fixed in the mounting seat 4, and the two scraping members are respectively mounted on the two rotating shafts 5, so that the scraping members rotate with the central axis of the rotating shaft 5 as the rotation axis L.

As shown in fig. 2 and fig. 4, the scraping members include scraping plates 31, the two scraping plates 31 are oppositely disposed, the saw band 1 passes between the two scraping plates 31, a spray head 32 for spraying liquid is disposed on one side of the two scraping members away from the saw band 1, and the liquid sprayed by the spray head 32 may be a liquid medium such as a cooling liquid, a cutting liquid or clear water, which is not limited herein.

The spraying direction of the spraying head 32 faces the corresponding scraping plate 31, in the working state, the spraying head 32 sprays liquid to the scraping plate 31, and the scraping plate 31 is driven to turn over under the impact force of the liquid so that the end side of the scraping plate 31 is abutted against the side wall of the saw band 1, and the side wall of the saw band 1 is scraped.

As a preferred embodiment, as shown in fig. 2, the blade 31 extends in an inclined state in a state of abutting against the saw blade 1, and the angle α between the end side of the blade 31 and the side wall of the saw blade 1 is in the range of 30 ° to 80 °, and the shower head 32 sprays water to the blade 31 substantially along the inclined direction of the blade 31. As shown in fig. 2, the solid arrow in the figure indicates the direction of injection of the nozzle 32, and the open arrow indicates the direction of travel of the saw band 1.

By the arrangement, taking the spray head 32 for spraying clear water as an example, when the device works, the spray head 32 sprays water flow to the scraper 31, the water flow sprayed by the spray head 32 can generate a larger impact force on the scraper 31 to drive the cleaning member to overturn, and finally the end side of the scraper 31 can be abutted against the saw belt 1 after the cleaning member is overturned, so that the state shown in fig. 2 is formed; the saw band 1 is thus conveniently and continuously scraped by the scraper 31 during continuous operation, so that the scraps attached to the saw band 1 are scraped off by the scraper 31, and the saw band 1 is prevented from bringing the scraps into the guide block 211.

According to the above process, in the present embodiment, the impact force generated by the scraper 31 (the impact force herein refers to the force of the scraper 31 abutting against the sidewall of the saw band 1) is derived from the water impact force of the nozzle 32, so long as the nozzle 32 continuously sprays water, the scraper 31 can always abut against the sidewall of the saw band 1, so once the nozzle 32 stops spraying water, the scraper 31 is not impacted by the water impact force any more, and no relative impact with the saw band 1 occurs, which is equivalent to that the scraper 31 is not impacted by external force any more, i.e. no impact force exists, so that the scraper 31 is not easy to bend and deform, and the service life of the scraper 31 is clearly more facilitated than the conventional method of using a spring to provide impact force to the scraper 31.

Furthermore, in this scheme shower nozzle 32 water spray not only can play the effect that provides the conflict to scraper blade 31, and shower nozzle 32 spun water is along scraper blade 31, will clear and scrape the in-process adhesion sweeps on scraper blade 31 to can improve the clear effect of scraping of scraper blade 31.

The structure of the mounting seat 4 is as follows: as shown in fig. 3 and 5, the mounting seat 4 includes a top plate 42 and two opposite side plates 41, the spray head 32 and the scraping member are located between the two side plates 41, and water sprayed from the spray head 32 can be limited to splash out to a large extent on two sides by the two side plates 41.

In order to supply water to the spray head 32, in this embodiment, as shown in fig. 2 and 8, the water channel 51 is disposed inside the rotating shaft 5, and the rotating shaft 5 is provided with a water inlet 53 communicating with the water channel 51; a water outlet 52 communicated with the water channel 51 is formed in the peripheral wall of the rotating shaft 5, the spray head 32 is mounted on the rotating shaft 5, and the spray head 32 is communicated with the water outlet 52. So only need to utilize the water pump to draw the water source to communicate the water outlet end of water pump with water course 51, water just can be pumped into water course 51 at this moment, then in the shower nozzle 32 through delivery port 52, finally spouts to scraper blade 31 by shower nozzle 32.

In this scheme, through setting up water course 51 in pivot 5 and installing shower nozzle 32 on pivot 5, so design can make the structure compacter, make full use of the space.

In order to increase the spraying area of the spraying head 32, in this embodiment, as shown in fig. 6 and 8, the spraying head 32 adopts a flat nozzle, the length of the nozzle of the spraying head 32 extends along the axial direction of the rotating shaft 5, and the corresponding water channel 51 and the water outlet 52 extend along the axial direction of the rotating shaft 5.

In this embodiment, as shown in fig. 4 and fig. 6, the scraping member further includes a turning plate 33 and a mounting frame 34, where the turning plate 33 rotates freely around the rotation axis L, specifically, ear plates 54 are respectively disposed on the upper portion and the lower portion of the turning plate 33, the turning plate 33 is rotatably disposed on the rotating shaft 5 through the ear plates 54, and the mounting frame 34 is disposed on the turning plate 33.

Since the blade 31 is liable to wear on the end side thereof (i.e., the end against the saw band 1) in long-term use, the blade 31 needs to be replaced once the wear is serious, in this embodiment, the blade 31 is detachably mounted on the mount 34, for example, the blade 31 is mounted on the mount 34 in a screw connection manner.

In practical application, since the scraper 31 and the mounting frame 34 are located at the mounting seat 4, and the space inside the mounting seat 4 is relatively narrow, it is difficult to mount and dismount the screw in the mounting seat 4 by using a screwdriver, so that the embodiment is further improved, so that the screw for connecting the scraper 31 and the mounting frame 34 is conveniently mounted and dismounted, and the mounting and dismounting of the scraper 31 are realized.

In this embodiment, as shown in fig. 6, the mounting frame 34 includes a connection portion 341 to which the scraper 31 is connected and at least two guide rods 342 fixed to the connection portion 341, where the connection portion 341 includes a side portion 341a extending in a vertical direction, the scraper 31 is mounted on the strip portion by a plurality of screws, and the plurality of screws are distributed at intervals in the vertical direction, so that the connection between the scraper 31 and the side portion 341a is more stable by a plurality of screws.

The guide rod 342 is movably disposed in the turning plate 33 in a penetrating manner, and is movable between a first position and a second position along a direction perpendicular to the rotation axis L, specifically, as shown in fig. 7, a channel 333 for the guide rod 342 to move is provided in the turning plate 33 corresponding to the guide rod 342, the channel 333 is disposed along a direction perpendicular to the rotation axis L, one end of the guide rod 342 is fixed on the connecting portion 341, and the other end is inserted into the channel 333.

Of course, in order to prevent the guide rod 342 from being pulled out of the channel 333 when the guide rod 342 is pulled out, in this embodiment, a stop 342a is provided at one end of the guide rod 342 located in the channel 333, and a stop 333a is provided at the mouth of the corresponding channel 333, and the stop 342a is blocked by the stop 333a, so as to limit the guide rod 342 from being pulled out.

In the first position, referring to the state shown in fig. 3 and 4, the connecting portion 341 is retracted into the mounting seat 4 and is combined with the turning plate 33; in the second position, referring to the state shown in fig. 5 and 6, the connection portion 341 is located outside the mounting seat 4; in this way, when the scraper 31 needs to be replaced, the guide rod 342 can be pulled to the second position, and at this time, the screw connection position of the connecting portion 341 and the scraper 31 is located outside the mounting seat 4, so that the screw is not limited by the interference of the mounting seat 4 any more when the screw is assembled or disassembled by the screwdriver.

As shown in fig. 4 and fig. 6, the top of the turning plate 33 and the top of the connecting portion 341 are relatively fixed by a vertically arranged locking bolt 6, specifically, the top of the turning plate 33 is provided with a first jack 332, the top of the connecting portion 341 is provided with a second jack 343a, wherein the second jack 343a is a screw hole structure adapted to the locking bolt 6; the locking bolt 6 is inserted into the first insertion hole 332 after being screwed into the second insertion hole 343a, so that the connection part 341 and the connection part 341 are connected together, and the connection part 341 and the scraper 31 cannot move relative to the connection part 33, as shown in fig. 4.

Since the connection portion 341 and the scraper 31 need to be pulled out of the mounting seat 4 when the scraper 31 is assembled or disassembled, the locking bolt 6 connecting the turning plate 33 and the connection portion 341 needs to be screwed up to be pulled out of the first insertion hole 332, and in the assembled state, the locking bolt 6 is positioned in the mounting seat 4, and the screwdriver cannot operate the locking bolt 6 in the mounting seat 4, in this embodiment, as shown in fig. 3, the top of the mounting seat 4 is provided with an operation hole 40 penetrating through the top wall of the mounting seat 4; when the flap 33 is turned to the assembly position and the guide rod 342 is in the first position, the locking bolt 6 is axially aligned with the operation hole 40, so that when the locking bolt 6 needs to be pulled out of the first insertion hole 332, the flap 33 can be turned to the assembly position first, at this time, the operation hole 40 and the locking bolt 6 are axially aligned, that is, the operation hole is located right above the locking bolt, so that the screwdriver can be vertically inserted down from the top of the operation hole 40, and finally the tool bit of the screwdriver can be inserted into the notch at the head end of the locking bolt 6, so that the screwdriver can be rotated to move the locking bolt 6 up until the locking bolt is pulled out of the first insertion hole 332.

In order to enable the flap 33 to accurately turn to the assembly position, in this embodiment, referring to fig. 4 and 6, the positioning member 7 for abutting the flap 33 is fixedly mounted on the nozzle 32, and of course, in other alternative embodiments, the positioning member 7 may also be mounted on the inner wall of the mounting seat 4; when the flap 33 abuts against the positioning element 7, said flap 33 is in the assembled position. So long as the flap 33 is flipped over against the positioning element 7, it is shown that the locking bolt 6 falls just below the operating hole 40.

In order to enable the first insertion hole 332 and the second insertion hole 343a to be aligned when being abutted, as shown in fig. 6, in this embodiment, the top of the flap 33 has a notch 331, the first insertion hole 332 is disposed in the notch 331, the top of the connecting portion 341 has a protrusion 343 extending toward a side near the notch 331, the second insertion hole 343a is disposed on the protrusion 343, and when the front end wall 343b of the protrusion 343 abuts against the front end wall 331a of the notch 331, the first insertion hole 332 and the second insertion hole 343a are axially aligned.

In other alternative embodiments, first receptacle 332 and second receptacle 343a are axially aligned when mount 34 is abutted against a sidewall of flap 33 on opposite sides; alignment of the first receptacle 332 and the second receptacle 343a can be achieved in both of the above ways.

For a better understanding of the present technical solution, the following description will be made specifically with respect to the replacement process of the scraper 31:

first, the flap 33 is turned over by hand or by means of a tool until it abuts against the positioning element 7, at which point the flap 33 is in the assembled position, in which the locking bolt 6 is aligned exactly axially with the operating hole 40.

Next, the screwdriver is inserted from the top of the operation hole 40 from top to bottom through the operation hole 40 to be abutted with the locking bolt 6, and then the screwdriver is rotated to enable the locking bolt 6 to move upwards until the locking bolt 6 is separated from the first insertion hole 332, at this time, the locking bolt 6 does not have a connection effect on the turning plate 33 and the connection portion 341 any more, so that the connection portion 341 can be pulled relative to the turning plate 33, and it is worth noting that in the process again, the locking bolt 6 still stays in the second insertion hole 343a and moves together with the connection portion 341.

Then, the connecting part 341 is pulled outwards by hand or a tool until the connecting part 341 is completely positioned outside the mounting seat 4, the connecting scraping plate 31 and the connecting part 341 screw are positioned outside the mounting seat 4, at the moment, the screw can be directly detached one by a screwdriver, a new scraping plate 31 is replaced, and the screw is used for locking.

Then, the connecting portion 341 is pushed into the mounting seat 4 again until the connecting portion 341 cannot be pushed further, at which time the front end wall of the protruding portion 343 abuts against the front end wall of the cutout 331, and the first insertion hole 332 and the second insertion hole 343a are axially aligned.

Finally, the turning plate 33 is turned over again to enter the assembly position, then the screwdriver is inserted from the operation hole 40 until the screwdriver is connected with the locking bolt 6, and then the screwdriver drives the locking bolt 6 to rotate, so that the locking bolt is continuously inserted into the first insertion hole 332, and the replacement is completed.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The band sawing machine comprises a machine body, a saw band and two guide arms, wherein the saw band is arranged on the machine body in a rotating mode, the guide arms are arranged on the machine body, one guide arm is positioned on the entering side of the saw band along the advancing direction of the saw band, the other guide arm is positioned on the output side of the saw band, the guide arms comprise guide heads for guiding the saw band, the guide heads comprise two guide blocks which are arranged oppositely, and the saw band passes through the space between the two opposite guide blocks, and the band sawing machine is characterized by further comprising a cleaning mechanism for cleaning the saw band, and the cleaning mechanism is arranged on the inner side of the guide block positioned on the output side of the saw band along the advancing direction of the saw band; the cleaning mechanism comprises a mounting seat and two cleaning members arranged on the mounting seat, the cleaning members can freely turn around a rotation axis, and the rotation axis is parallel to the side wall of the saw belt; the cleaning component comprises scrapers, the two scrapers are oppositely arranged, the saw belt passes through the two scrapers, a spray head for spraying liquid is arranged on one side, away from the saw belt, of the cleaning component, the spray direction of the spray head faces towards the corresponding scrapers, in a working state, the spray head sprays liquid to the scrapers, and the scrapers are driven to overturn under the impact force of the liquid so that the end sides of the scrapers are abutted against the side walls of the saw belt to clean the side walls of the saw belt.

2. The band sawing machine according to claim 1, wherein the mounting seat is fixedly provided with a rotating shaft, the scraping member is rotatably arranged on the rotating shaft by taking a central axis of the rotating shaft as a rotating axis, a water channel is arranged in the rotating shaft, and the rotating shaft is provided with a water inlet communicated with the water channel; the periphery wall of the rotating shaft is provided with a water outlet communicated with the water channel, and the spray head is arranged on the rotating shaft and is communicated with the water outlet.

3. The band sawing machine according to claim 2, wherein the water channel and the water outlet extend along the axial direction of the rotating shaft, and the spray head is a flat nozzle spray head.

4. The band sawing machine according to claim 1, wherein the scraping means further comprises a flap and a mounting frame, the flap being freely rotatable about the rotation axis, the mounting frame being provided on the flap, the scraper being detachably mounted on the mounting frame.

5. The band sawing machine according to claim 2, wherein the mounting frame comprises a connecting part for connecting the scraping plate and at least two guide rods fixed with the connecting part, the guide rods are movably arranged in the turning plate in a penetrating manner and can move between a first position and a second position along a direction perpendicular to the rotation axis, the connecting part is retracted into the mounting seat and is gathered with the turning plate in the first position, and the connecting part is positioned outside the mounting seat in the second position; the turning plate and the top of the connecting part are fixed relatively through a locking bolt arranged vertically; the top of the mounting seat is provided with an operation hole penetrating through the top wall of the mounting seat; when the flap is flipped to the assembled position and the guide bar is in the first position, the locking bolt is axially aligned with the operating aperture.

6. The band sawing machine according to claim 5, wherein a positioning member against which the flap is abutted is fixedly installed in the installation base or on the nozzle, and the flap is in an assembled position when the flap abuts against the positioning member.

7. The band sawing machine according to claim 5, wherein the top of the turning plate is provided with a first jack, the top of the connecting part is provided with a second jack, and the second jack is of a screw hole structure matched with the locking bolt; in the assembled state, the locking bolt is screwed into the second jack and then inserted into the first jack.

8. The band sawing machine of claim 7, wherein the first and second receptacles are axially aligned when the mounting bracket abuts the side wall of the flap on the opposite side; or, the top of the turning plate is provided with a notch, the first jack is arranged in the notch, the top of the connecting part is provided with a convex part extending towards one side close to the notch, the second jack is arranged on the convex part, and when the front end wall of the convex part abuts against the front end wall of the notch, the first jack and the second jack are axially aligned.

9. The band sawing machine as claimed in claim 5, wherein the connection portion comprises a side portion extending in a vertical direction, the blade is mounted on the blade portion by a plurality of screws, and the plurality of screws are spaced apart in the vertical direction.

10. The band sawing machine of claim 1, wherein the mounting base comprises two oppositely disposed side plates, the spray head and the scraping member being located between the side plates.