CN212858042U

CN212858042U - Double-end saw for automatic cutting of aluminum alloy section

Info

Publication number: CN212858042U
Application number: CN202021716710.1U
Authority: CN
Inventors: 李学荣; 葛小龙; 张小七
Original assignee: Nanjing Jingfeng Door & Window Co ltd
Current assignee: Nanjing Jingfeng Door & Window Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-04-02
Anticipated expiration: 2030-08-17

Abstract

The application relates to the technical field of double-head saws, in particular to a double-head saw for automatically cutting aluminum alloy sections, which comprises a supporting seat, a sliding rail arranged on the supporting seat, a fixed saw head fixed at one end of the sliding rail and a movable saw head connected with the sliding rail in a sliding manner, wherein a first positioning cylinder is arranged on the fixed saw head, and a second positioning cylinder is arranged on the movable saw head; the saw mouth end of the fixed saw head and the saw mouth end of the movable saw head are respectively provided with an anti-splash protection mechanism; the splash-proof protection mechanism positioned at the saw cut end of the fixed saw head comprises a scrap collecting shell arranged below the saw cut end of the fixed saw head and a splash-proof cover shell arranged on the fixed saw head; the splash-proof protection mechanism positioned at the saw cut end of the movable saw head comprises a scrap collecting shell arranged below the saw cut end of the movable saw head and a splash-proof cover shell arranged on the movable saw head. This application has and reduces cutting sweeps and looses four and piles up, makes things convenient for operating personnel to collect fast, clear up the sweeps, improves the effect to operating personnel's protection.

Description

Double-end saw for automatic cutting of aluminum alloy section

Technical Field

The application relates to the technical field of double-end saws, in particular to a double-end saw for automatic cutting of aluminum alloy sections.

Background

The double-head saw is a section cutting tool used in the production of doors and windows, is suitable for cutting and processing aluminum-plastic sections at 45 degrees, 22.5 degrees and 90 degrees, and mainly comprises a saw head, a lathe bed, a material supporting frame, a control cabinet and the like, wherein the left saw head is a fixed saw head, the right saw head is a movable saw head which can move left and right on a circular guide rail, and each saw head comprises a swing angle mechanism, a feeding system, a workbench, a workpiece clamping system, a saw blade, a saw cover and the like.

Chinese patent No. CN207171090U discloses a double-ended miter saw of section bar, which comprises a supporting seat, wherein a sliding rail is fixedly arranged on the supporting seat; the cutting device comprises a base, a supporting plate, a cutting knife, a rotating motor and a first air cylinder, wherein the base is arranged on the sliding rail in a sliding mode, the supporting plate is arranged on the base and rotates along the length direction of the sliding rail, the cutting knife is arranged in the supporting plate and rotates in the supporting plate, the rotating motor is arranged on the supporting plate and drives the cutting knife to rotate, and the first air cylinder is fixedly arranged on the supporting plate and drives the cutting knife to slide along the direction perpendicular to the length direction of the; the rotating assembly is arranged on the base and drives the supporting plate to rotate; the locking assembly is arranged on the base and used for fixing the support plate in a rotating manner; the dial is fixedly arranged on the base and is used for measuring the rotating angle of the supporting plate; the dustproof cover is rotatably arranged on the base.

The above related technical solutions have the following drawbacks: in the cutting process, the sweeps generated by cutting the section bars are scattered and splashed along with the cutting process, so that a large amount of sweeps are accumulated on the equipment, the transmission equipment is abraded, and meanwhile, the cleaning and maintenance of follow-up personnel are not facilitated.

SUMMERY OF THE UTILITY MODEL

In order to reduce cutting process sweeps and pile up scattered all around, the personnel of being convenient for clear up the sweeps, this application provides an aluminum alloy is double-end saw for section bar automatic cutout.

The application provides a double-end saw for aluminum alloy ex-trusions automatic cutout adopts following technical scheme:

a double-head saw for automatically cutting aluminum alloy sections comprises a supporting seat, a sliding rail arranged on the supporting seat, a fixed saw head fixed at one end of the sliding rail and a movable saw head connected with the sliding rail in a sliding manner, wherein a first positioning cylinder used for tightly pushing the sections towards the saw opening end of the fixed saw head is arranged on the fixed saw head, and a second positioning cylinder used for tightly pushing the sections towards the saw opening end of the movable saw head is arranged on the movable saw head;

the saw mouth end of the fixed saw head and the saw mouth end of the movable saw head are respectively provided with an anti-splash protection mechanism;

the splash-proof protection mechanism positioned at the kerf end of the fixed saw head comprises a scrap collecting shell arranged below the kerf end of the fixed saw head and a splash-proof cover shell arranged on the fixed saw head and used for covering the kerf end of the fixed saw head;

the splash-proof protection mechanism comprises a scrap collecting shell arranged below the saw cut end of the movable saw head and a splash-proof housing arranged on the movable saw head and used for covering the saw cut end of the movable saw head.

By adopting the technical scheme, after the movable saw head is adjusted by an operator along the slide rail, the section to be cut is arranged between the fixed saw head and the movable saw head, the first driving positioning cylinder and the second positioning cylinder push against the section to be positioned, the two splash-proof housings are respectively covered at the saw cuts of the fixed saw head and the movable saw head in a one-to-one correspondence manner, then the section is cut by the fixed saw head and the movable saw head, cutting scraps are sputtered to the operator by the splash-proof housings, part of the scraps fall into the scrap collecting shell, and meanwhile part of the splashed scraps fall into the scrap collecting shell along the splash-proof housings.

Preferably, a first clamping groove is formed in the top of the saw kerf of the fixed saw head, a second clamping groove is formed in the top of the saw kerf of the movable saw head, a clamping block is hinged to the splash-proof housing, and the clamping block is matched with the first clamping groove and the second clamping groove.

By adopting the technical scheme, an operator can conveniently install and detach the two splash-proof housings by inserting the clamping grooves I and the clamping grooves II into the two splash-proof housings one by one through the clamping blocks.

Preferably, the fixed saw head is located the lateral wall of self kerf open end and has seted up constant head tank one, the activity saw head is located the lateral wall of self kerf open end and has seted up constant head tank two, the lateral wall of splashproof housing is fixed with and is used for the butt joint constant head tank one and constant head tank two support the reference column of splashproof housing.

Through adopting above-mentioned technical scheme, operating personnel installs the splashproof housing grafting on fixed saw head and activity saw head, rotate the kerf open end that fixed saw head and activity saw head were established to corresponding the splashproof housing cover, the reference column that corresponds the splashproof housing supports into and corresponds constant head tank one and constant head tank two, thereby prop up the splashproof housing, the position is established to the cover that is favorable to fixing a position the splashproof housing, avoid rotating the saw head end that too is close to fixed saw head and activity saw head when the splashproof housing is established to the cover, reduce the cutting damage splashproof housing, the stability is established to the cover that improves the splashproof housing.

Preferably, the first positioning groove and the second positioning groove are internally provided with positioning magnets, and the end walls of the positioning columns are fixed with adsorption magnets for adsorbing the positioning magnets.

Through adopting above-mentioned technical scheme, after the reference column of splashproof housing supported corresponding constant head tank one and constant head tank two, adsorption magnet inhales tightly and corresponds location magnet to stability is established to the cover that further improves the splashproof housing.

Preferably, the splash guard housing is provided with flaring plates extending outwards towards the longitudinal two sides of the saw cut of the fixed saw head respectively.

By adopting the technical scheme, the range of the splash guard housing facing the saw cut of the fixed saw head is further enlarged by the flaring plate, and the problem of scattering splashed scraps is further reduced.

Preferably, the outer side wall of the splash guard housing is hinged with a hook, and a hook groove for the hook to hook into after the splash guard housing is lifted up is formed in the fixture block.

By adopting the technical scheme, when an operator needs to rotate to open the splash guard housing, the splash guard housing is rotated until the hook moves to the hook groove position, and then the hook is rotated to hook into the hook groove to rotate the position of the splash guard housing, so that the operator can conveniently open and position the splash guard housing at any time.

Preferably, a first slot is formed in the side wall, located below the self saw kerf, of the fixed saw head, and a first chip falling port communicated with the first slot is formed in the fixed saw head, located below the self saw kerf;

a second slot is formed in the side wall, located below the self saw kerf, of the movable saw head, and a second chip falling port communicated with the second slot is formed in the position, located below the self saw kerf, of the movable saw head;

and the top surface of the chip collecting shell is provided with a chip collecting port for guiding the waste chips, and the chip collecting shell is matched with the first slot and the second slot.

By adopting the technical scheme, the cutting scraps fall into the corresponding scrap collecting shell through the scrap falling port I and the scrap falling port II, the scrap collecting shell is rapidly drawn out through the slot I and the slot II, then the accumulated scraps in the scrap collecting shell can be rapidly cleaned, and the convenience of cleaning the scraps is improved.

Preferably, the two sides of the first chip falling port on the fixed saw head are respectively connected with a first scraper blade in a sliding manner, and the two sides of the second chip falling port on the movable saw head are respectively connected with a second scraper blade in a sliding manner.

By adopting the technical scheme, after cutting for a period of time, an operator moves the first scraper blade towards the first chip falling port and moves the second dry scraper blade towards the second chip falling port, so that chips falling and accumulated on two sides of the first chip falling port and the second chip falling port are quickly led into the chip collecting shell, and the operator can conveniently and quickly collect and clean the cutting chips.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the splash-proof housing obstructs cutting scraps from sputtering to an operator and falls down the scrap collecting housing along the splash-proof housing, the operator takes out the scrap collecting housing to clean accumulated scraps, the scattered splashing of the cutting scraps is reduced, the operator can clean the scraps quickly, and the protection of the operator is improved;

2. an operator rotates the splash guard housing to cover the opening ends of saw openings of the fixed saw head and the movable saw head, and the positioning columns corresponding to the splash guard housing abut against the corresponding positioning grooves I and the corresponding positioning grooves II to support the splash guard housing, so that the position of the splash guard housing is favorably positioned, the splash guard housing is prevented from being too close to the saw opening ends of the fixed saw head and the movable saw head when the splash guard housing is rotatably covered, the splash guard housing is reduced in cutting damage, and meanwhile, the covering stability of the splash guard housing is improved;

3. the first scraper blade is moved towards the first chip falling port by an operator, and the second dry scraper blade is moved towards the second chip falling port by the operator, so that the chips falling and accumulated on the two sides of the first chip falling port and the second chip falling port are quickly led into the chip collecting shell, and the operators can conveniently and quickly collect, clean and cut the chips.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present application, which is used to embody a whole of a supporting base, a fixed saw head, a movable saw head, and a corresponding splash protection mechanism.

FIG. 2 is a partial cross-sectional view of an embodiment of the present application showing a chip collecting housing, a first chip drop port, a second chip drop port, a first scraper, and a second scraper.

Fig. 3 is an enlarged view of a position a in fig. 1, and is used for embodying the structures of the positioning column, the adsorption magnet, the positioning groove two, the positioning magnet, the clamping groove two, the clamping block, the hook and the flaring plate.

In the figure, 1, a support seat; 11. a slide rail; 2. fixing the saw head; 21. a first positioning cylinder; 22. a first clamping groove; 23. positioning a first groove; 24. a first slot; 25. a chip falling port I; 3. a movable saw head; 31. a second positioning cylinder; 32. a second clamping groove; 33. positioning a second groove; 34. a second slot; 35. a second chip falling port; 4. a splash protection mechanism; 41. a chip collecting shell; 411. a chip collecting port; 42. a splash guard housing; 421. a clamping block; 4211. a hook groove; 422. a positioning column; 4221. connecting blocks; 423. adsorbing a magnet; 424. an opening expanding plate; 425. hooking; 5. positioning a magnet; 6. a base plate; 61. a chute; 62. a first scraper plate; 621. a first handle; 63. a second scraper plate; 631. a second handle; 7. and a controller.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses aluminum alloy ex-trusions is double-end saw for automatic cutout. Referring to fig. 1 and 2, a double-head saw for automatic cutting of aluminum alloy sections comprises a supporting seat 1 arranged on the ground, a sliding rail 11 composed of double polished rods is transversely fixed on the top surface of the supporting seat 1, a fixed saw head 2 is fixed on the top surface of the supporting seat 1 and located at the left end of the sliding rail 11, a movable saw head 3 is connected on the top surface of the supporting seat 1 and located on the sliding rail 11 in a sliding manner, the saw mouth end of the fixed saw head 2 and the saw mouth end of the movable saw head 3 face one side of a front operation station, a positioning cylinder I21 is fixed on the side wall of the fixed saw head 2 facing the front operation station, the output end of the positioning cylinder I21 faces the open end side wall of the saw mouth of the fixed saw head 2, a positioning cylinder II 31 is fixed on the side wall of the movable saw head 3 facing the front operation station, the output end side wall of the positioning cylinder II 31 faces the saw mouth of the movable saw head 3, and a cutting type for driving and controlling the fixed saw head 2 A controller 7 of the timber; the section bar is arranged in front of the saw cuts of the fixed saw head 2 and the movable saw head 3, and the section bar can be cut after the first positioning cylinder 21 and the second positioning cylinder 31 are driven to tightly push the section bar, and the cutting principle and the adjustment mode of the fixed saw head 2 and the movable saw head 3 are the prior art and are not described herein again.

Referring to fig. 1 and 2, the kerf end of the fixed saw head 2 and the kerf end of the movable saw head 3 are respectively provided with an anti-splash protection mechanism 4; the splash-proof protection mechanism 4 comprises two parts, namely a scrap collecting shell 41 and a splash-proof housing 42, a first clamping groove 22 is formed in the top surface of the fixed saw head 2, a second clamping groove 32 is formed in the top surface of the movable saw head 3, a clamping block 421 is hinged to one end of the splash-proof housing 42, the first clamping groove 22 and the second clamping groove 32 are identical in shape and size and are matched with the clamping block 421, one splash-proof housing 42 is clamped with the first clamping groove 22 through the clamping block 421 to be hung on the fixed saw head 2, the other splash-proof housing 42 is clamped with the second clamping groove 32 through the clamping block 421 to be hung on the movable saw head 3, and the bottom end of the splash-; the operator covers the two splash-proof enclosers 42 on the saw cuts of the fixed saw head 2 and the movable saw head 3 in a one-to-one correspondence mode respectively, so that the splash-proof enclosers 42 are convenient to install and disassemble, the fixed saw head 2 and the movable saw head 3 are driven to cut sectional materials, cutting scraps are prevented from being sputtered to the operator by the splash-proof enclosers 42, and the protection to the operator is improved.

Referring to fig. 1 and 2, the two splash guards 42 are respectively provided with flaring plates 424 extending towards the two longitudinal sides of the saw kerf of the fixed saw head 2, and the two splash guards 42 are respectively provided with flaring plates 424 extending towards the two longitudinal sides of the saw kerf of the movable saw head 3; the flaring board 424 further expands the range of the splash guard 42 facing the kerf of the fixed saw head 2 and the moveable saw head 3, and further reduces the problem of scattering of the waste chips.

Referring to fig. 1 and 2, the fixed saw head 2 is located below the saw mouth of the fixed saw head and has a first slot 24 on the side wall facing the operation station, the top surface of the chip collecting shell 41 has a chip collecting port 411, one of the chip collecting shell 41 is inserted into the first slot 24, the fixed saw head 2 is located below the saw mouth of the fixed saw head and has a first chip falling port 25 communicated with the first slot 24, the chip collecting port 411 of the chip collecting shell 41 in the first slot 24 is in butt joint with the first chip falling port 25, the movable saw head 3 is located below the saw mouth of the fixed saw head and has a second slot 34 on the side wall facing the operation station, the other chip collecting shell 41 is inserted into the second slot 34, the movable saw head 3 is located below the saw mouth of the fixed saw head and has a second chip falling port 35 communicated with the second slot 34, the chip collecting port 411 of the chip collecting shell 41 in the second slot 34 is in butt joint with the second chip falling port 35, and the cutting waste chips fall into the corresponding chip collecting shell 41 through the first chip falling port 25 and, the scraps are quickly removed from the scraps collecting shell 41 through the first slot 24 and the second slot 34, scraps can be quickly accumulated in the scraps collecting shell 41, the convenience of cleaning the scraps is improved, the scraps collecting shell 41 is matched with the splash-proof housing 42 for use, the scattered splashing of the cutting scraps is favorably reduced, operators can quickly clean the scraps, and the protection of the operators is improved.

Referring to fig. 1 and 2, a backing plate 6 is fixedly arranged on the top surface of a first chip-falling port 25 on the fixed saw head 2 and the top surface of a second chip-falling port 35 on the movable saw head 3 respectively, openings penetrating the first chip-falling port 25 and the second chip-falling port 35 are formed in the top surface of the backing plate 6, sliding grooves 61 are formed in the two sides of the opening of the top surface of the backing plate 6 along the direction towards the openings, first scraping plates 62 for scraping and conveying waste chips towards the first chip-falling port 25 are connected in the sliding grooves 61 of the backing plate 6 on the first chip-falling port 25 and the two sides of the opening of the backing plate 6 in a sliding manner respectively, a first handle 621 convenient for manual pushing is fixed on the top surface of the first scraping plates 62, second scraping plates 63 for scraping and conveying waste chips towards the second chip-falling port 35 are connected in the sliding grooves 61 of the backing plate 6 on the second chip-falling port 35 in a sliding manner; after cutting for a period of time, an operator moves the first scraper 62 towards the first chip-falling port 25 and moves the second scraper 63 towards the second chip-falling port 35, so that the chips falling and accumulated on two sides of the first chip-falling port 25 and the second chip-falling port 35 are quickly guided into the chip collecting shell 41, and the operator can conveniently and quickly collect and clean the cutting chips.

Referring to fig. 2 and 3, the side wall of the fixed saw head 2 at the opening end of the saw kerf itself is provided with a first positioning groove 23, the first positioning grooves 23 can be arranged as a pair and are respectively positioned at two sides of the longitudinal opening end of the saw kerf of the fixed saw head 2, the side wall of the movable saw head 3 at the opening end of the saw kerf itself is provided with a second positioning groove 33, the second positioning grooves 33 can be arranged as a pair and are respectively positioned at two sides of the longitudinal opening end of the saw kerf of the movable saw head 3, two opposite side walls of the splash guard 42 in the longitudinal, a positioning column 422 is fixed on the side face of the connecting block 4221 facing the fixed saw head 2 and the movable saw head 3, positioning magnets 5 are arranged in the first positioning groove 23 and the second positioning groove 33, an adsorption magnet 423 capable of adsorbing the positioning magnets 5 is fixed on the end wall of the positioning column 422, and when the splash-proof housing 42 is rotated to the saw cut of the fixed saw head 2 and the movable saw head 3, the positioning column 422 and the adsorption magnet 423 are just embedded into the positioning magnets 5; operating personnel installs splashproof housing 42 on fixed saw head 2 and activity saw head 3 with the grafting, rotate and correspond splashproof housing 42 cover and establish the kerf open end of fixed saw head 2 and activity saw head 3, the reference column 422 that corresponds splashproof housing 42 supports into and adsorbs on the location magnet 5 that corresponds constant head tank 23 and constant head tank two 33, thereby prop up splashproof housing 42, be favorable to fixing a position splashproof housing 42's cover and establish the position, avoid rotating the cover and establish the kerf end of fixed saw head 2 and activity saw head 3 too close to when splashproof housing 42, reduce cutting damage splashproof housing 42, the stability is established to the cover that improves splashproof housing 42 simultaneously.

Referring to fig. 2 and 3, a hook 425 is hinged to the top end of the splash guard 42, a hook head of the hook 425 faces to one side of the fixture block 421, and a hook groove 4211 for hooking the hook 425 is formed in the top surface of the fixture block 421; when an operator needs to rotate to open the splash guard 42, the splash guard 42 is rotated until the hook 425 moves to the position of the hook groove 4211, and then the hook 425 is rotated to hook into the hook groove 4211 to position the rotating position of the splash guard 42, so that the operator can conveniently open and position the splash guard 42 at any time.

The embodiment of the application provides an implementation principle of double-end saw for automatic cutting of aluminum alloy section bar is: when an operator places the section bar between the fixed saw head 2 and the movable saw head 3 for cutting, the two chip collecting shells 41 are respectively inserted into the first slot 24 and the second slot 34 in a one-to-one corresponding manner, the two splash guard housings 42 are rotated to be covered on the saw opening of the fixed saw head 2 and the saw opening of the movable saw head 3 in a one-to-one corresponding manner, meanwhile, the splash guard housings 42 are adsorbed by the positioning magnets 5 in the corresponding positioning grooves 23 and 33 by means of the positioning columns 422 and the adsorption magnets 423, so that the corresponding splash guard housings 42 are supported and positioned, after the cutting is completed, the first scraper 62 is pushed towards the first chip falling port 25 through the first handle 621, the second scraper 63 is pushed towards the second chip falling port 35 through the second handle 631, the two chip collecting shells 41 can be extracted for cleaning, the splash guard housings 42 are lifted, the hooks 425 are hooked into the corresponding hook grooves 4211, and the operator can lift the splash guard housings 42 conveniently.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A double-head saw for automatically cutting aluminum alloy sections comprises a supporting seat (1), a sliding rail (11) arranged on the supporting seat (1), a fixed saw head (2) fixed at one end of the sliding rail (11) and a movable saw head (3) connected with the sliding rail (11) in a sliding manner, wherein a first positioning cylinder (21) used for tightly pushing the sections towards the saw mouth end of the fixed saw head (2) is arranged on the fixed saw head (2), and a second positioning cylinder (31) used for tightly pushing the sections towards the saw mouth end of the movable saw head (3) is arranged on the movable saw head (3);

the method is characterized in that: the saw cut end of the fixed saw head (2) and the saw cut end of the movable saw head (3) are respectively provided with an anti-splash protection mechanism (4);

the splash-proof protection mechanism (4) positioned at the kerf end of the fixed saw head (2) comprises a scrap collecting shell (41) arranged below the kerf end of the fixed saw head (2) and a splash-proof cover shell (42) arranged on the fixed saw head (2) and used for covering the kerf end of the fixed saw head (2);

the splash-proof protection mechanism (4) comprises a scrap collecting shell (41) arranged below the saw cut end of the movable saw head (3) and a splash-proof housing (42) arranged on the movable saw head (3) and used for housing the saw cut end of the movable saw head (3).

2. The double-end saw for automatically cutting aluminum alloy sections as claimed in claim 1, wherein: fixed saw head (2) are gone up and are located self kerf top and seted up draw-in groove one (22), activity saw head (3) are gone up and are located self kerf top and seted up draw-in groove two (32), splashproof housing (42) articulates there is fixture block (421), just fixture block (421) with draw-in groove one (22) and draw-in groove two (32) agree with mutually.

3. The double-end saw for automatically cutting aluminum alloy sections as set forth in claim 2, wherein: fixed saw head (2) are located the lateral wall of self kerf open end and have seted up constant head tank one (23), constant head tank two (33) have been seted up to activity saw head (3) are located the lateral wall of self kerf open end, the lateral wall of splashproof encloser (42) is fixed with and is used for the butt joint constant head tank one (23) and constant head tank two (33) support reference column (422) of splashproof encloser (42).

4. The double-end saw for automatically cutting aluminum alloy sections as recited in claim 3, wherein: positioning magnets (5) are arranged in the first positioning groove (23) and the second positioning groove (33), and adsorption magnets (423) used for adsorbing the positioning magnets (5) are fixed on the end walls of the positioning columns (422).

5. The double-end saw for automatically cutting aluminum alloy sections according to any one of claims 2 to 4, wherein: and the splash guard casing (42) is provided with flaring plates (424) extending outwards towards the two longitudinal sides of the saw kerf of the fixed saw head (2).

6. The double-end saw for automatically cutting aluminum alloy sections as recited in claim 5, wherein: the outer side wall of the splash guard housing (42) is hinged with a hook (425), and a hook groove (4211) for the hook (425) to hook into after the splash guard housing (42) is lifted up is formed in the fixture block (421).

7. The double-end saw for automatically cutting aluminum alloy sections as recited in claim 5, wherein: a first slot (24) is formed in the side wall, located below the self saw cut, of the fixed saw head (2), and a first chip falling opening (25) communicated with the first slot (24) is formed in the fixed saw head (2), located below the self saw cut;

a second slot (34) is formed in the side wall, located below the saw cut, of the movable saw head (3), and a second chip falling port (35) communicated with the second slot (34) is formed in the movable saw head (3), located below the saw cut;

the top surface of the chip collecting shell (41) is provided with a chip collecting port (411) for guiding the waste chips, and the chip collecting shell (41) is matched with the first slot (24) and the second slot (34).

8. The double-end saw for automatically cutting aluminum alloy sections as recited in claim 7, wherein: the two sides of the first chip falling opening (25) on the fixed saw head (2) are respectively connected with a first scraper (62) in a sliding mode and used for scraping scraps towards the first chip falling opening (25), and the two sides of the second chip falling opening (35) on the movable saw head (3) are respectively connected with a second scraper (63) in a sliding mode and used for scraping scraps towards the second chip falling opening (35).