CN116213826B

CN116213826B - Metal cutting device for door and window manufacturing

Info

Publication number: CN116213826B
Application number: CN202310123700.9A
Authority: CN
Inventors: 梁晓东; 胡新尧; 张俊峰; 梁恒; 林狄
Original assignee: Guangdong Fulinmen Shijia Smart Home Co ltd
Current assignee: Guangdong Fulinmen Shijia Smart Home Co ltd
Priority date: 2023-02-16
Filing date: 2023-02-16
Publication date: 2023-08-25
Anticipated expiration: 2043-02-16
Also published as: CN116213826A

Abstract

The invention discloses a metal cutting device for manufacturing doors and windows, which comprises an operation main body, wherein the operation main body comprises a workbench, a processing cavity and a material conveying groove are formed in the workbench, a material placing plate which is flush with the horizontal plane of the material conveying groove is fixedly connected to the inner wall of the processing cavity, and a cutting part comprises a lifting plate. This a metal cutting device for door and window makes can solve among the prior art effectively that automatic cutting device mostly adopts two aircraft nose to cut in turn the unloading, and after the saw bit carries out 45 degrees cutting to bridge cut-off aluminium alloy on first group aircraft nose, the manipulator will bridge cut-off aluminium alloy pullback, 45 degrees cutting angle on the second group aircraft nose are opposite unnecessary section bar tip, and then guarantee the section bar both ends bevel connection symmetry after the cutting, but above-mentioned cutting process needs the manipulator to pull section bar and multiple location reciprocally, whole complex operation's problem.

Description

Metal cutting device for door and window manufacturing

Technical Field

The invention relates to the technical field of metal cutting, in particular to a metal cutting device for manufacturing doors and windows.

Background

The window consists of a window frame, a window sash and hardware parts. The fixed part of the window frame consists of a frame, an upper frame, a lower frame, a middle transverse frame and a middle vertical frame; the movable part of the window sash consists of an upper rail, a lower rail, a side stile, a window core and glass; the hardware parts and accessories comprise hinges, a wind hook, a bolt, a handle curtain box, a window sill plate, a bobbin plate, a face plate and the like.

When the aluminum alloy doors and windows are processed, the broken bridge aluminum profiles are required to be cut into different parts and then assembled, most aluminum alloy doors and windows are all cut into 45-degree angles to be spliced, however, most of the existing automatic cutting devices adopt two machine heads to alternately cut and discharge, after the saw blades on the first machine head set cut the broken bridge aluminum profiles by 45 degrees, the mechanical arm pulls back the broken bridge aluminum profiles, the saw blades on the second machine head set cut the redundant profile ends with 45-degree cutting angles opposite to each other, and further, the bevel symmetry of the two ends of the cut profile is ensured, but the mechanical arm is required to pull the profile in a reciprocating manner and locate for multiple times in the cutting process, and the whole operation is complex.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects existing in the prior art, the invention provides the metal cutting device for manufacturing doors and windows, which can effectively solve the problems that in the prior art, most of automatic cutting devices adopt two machine heads to alternately cut and discharge, after a first group of machine heads cut broken bridge aluminum profiles by a saw blade at 45 degrees, the broken bridge aluminum profiles are pulled back by a mechanical arm, and redundant profile ends with opposite cutting angles of the saw blade at 45 degrees on a second group of machine heads are cut by the mechanical arm, so that the bevel ports at two ends of the cut profiles are symmetrical, but the cutting process needs the mechanical arm to repeatedly pull the profiles and locate for a plurality of times, and the whole operation is complicated.

Technical proposal

In order to achieve the above purpose, the invention is realized by the following technical scheme:

the invention provides a metal cutting device for door and window manufacture, comprising:

the operation main body comprises a workbench, a processing cavity and a material conveying groove are formed in the workbench, and a storage plate which is flush with the horizontal plane of the material conveying groove is fixedly connected to the inner wall of the processing cavity;

the cutting part comprises a lifting plate, the processing cavity is connected with the outer surface of the lifting plate in a sliding way through an inner sliding groove formed in the inner wall of the processing cavity, a cutting unit is detachably arranged on the upper surface of the lifting plate, a cutting groove capable of being used for a saw blade on the cutting unit to pass through in a reciprocating way is formed in the storage plate, and a lifting unit connected with the lower surface of the lifting plate is fixedly connected to the bottom of the inner wall of the processing cavity;

the lifting plate is characterized in that the inside of the storage plate is rotationally connected with a clamping piece which can be used for propping against the outer surface of the profile, and the upper surface of the lifting plate is fixedly connected with a toothed plate which can be used for adjusting the position of the clamping piece.

Further, still include material loading portion, material loading portion includes the carriage, workstation is close to carriage one side fixedly connected with guide board, the guide board below is provided with the telescopic link, the inside sliding connection of workstation has the electric expansion plate that is connected with the telescopic link bottom, workstation is kept away from processing chamber one side fixedly connected with drive unit.

Further, the through holes for discharging waste materials are formed in the storage plate and the lifting plate, the storage plate is fixedly connected with a pressing unit through a guide block arranged at the top of the storage plate, and a pushing unit connected with the top of the storage plate is arranged on the outer side of the guide block.

Further, the clamping piece comprises an inner rotating rod, the circumferential surface of the inner rotating rod is rotationally connected with the inside of the storage plate, the top end of the inner rotating rod is fixedly connected with a polished rod, and the circumferential outer surface of the polished rod is sleeved with a tight abutting block which is attached to an external section bar.

Further, the inner rotating rod is connected with a worm through a worm wheel arranged at the bottom end of the inner rotating rod in a meshed mode, one end, away from the toothed plate, of the worm is connected with the inside of the workbench in a rotating mode, and the worm is connected with the outer surface of the toothed plate through a toothed sleeve sleeved on the outer side of the worm in a meshed mode.

Further, the worm is close to pinion rack one end and is the round platform design, the round platform face of worm closely laminates there is hollow carousel, hollow carousel external surface fixedly connected with support, tooth cover inner wall fixedly connected with and the cardboard of laminating mutually of support surface, hollow carousel one side is kept away from to the support rotates and is connected with the screw thread pin, screw thread pin surface and the inside threaded connection of tooth cover.

Further, a plurality of friction strips are fixedly connected to the inner wall of the hollow rotary disc, and an elastic piece attached to the end face of the worm is fixedly connected to one side, away from the threaded pin, of the hollow rotary disc.

Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:

the invention is provided with a cutting part, a clamping piece and a pressing-down machine set, a hydraulic telescopic rod in the lifting unit drives the lifting plate to move upwards, the upper surface of the lifting plate is detachably provided with the cutting unit, two groups of saw blades rotating at high speed move upwards synchronously, sequentially pass through a cutting groove and cut bridge-cut aluminum profiles on the upper surface of the opposite object plate, and the waste bridge-cut aluminum profiles above the through holes are always acted by the pressing-down force of the pressing-down machine set, so that the position of the waste bridge-cut aluminum profiles is always kept constant in the cutting process of the bridge-cut aluminum profiles, and the deformation of cutting openings is avoided. The cutting part is matched with the clamping piece and the pressing machine set to cut the aluminum profile at one time, compared with the traditional automatic cutting device, most of the cutting part adopts two machine heads to alternately cut and discharge, when the saw blade on the first machine head is used for cutting the broken bridge aluminum profile in a degree, the mechanical arm is used for pulling back the broken bridge aluminum profile, and the saw blade on the second machine head is used for cutting the redundant profile ends with opposite angles in a degree, so that the bevel connection symmetry at two ends of the cut profile is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 is a schematic view of a three-dimensional structure of an embodiment of the present invention;

FIG. 2 is a schematic view of a three-dimensional multi-angle structure according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 1 with a partial enlargement according to an embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating a three-dimensional state transformation of a tightening block according to an embodiment of the present invention;

FIG. 5 is a schematic view of a three-dimensional structure of an operation body according to an embodiment of the present invention;

FIG. 6 is a schematic view of a three-dimensional partially separated structure of a clamping member according to an embodiment of the present invention;

FIG. 7 is a schematic view of a three-dimensional separation structure of a worm and a tooth sleeve according to an embodiment of the present invention;

fig. 8 is a schematic view of a three-dimensional separation structure of a worm, a hollow turntable, a tooth sleeve and a threaded pin according to an embodiment of the present invention.

Reference numerals in the drawings represent respectively: 1. an operation body; 11. a work table; 12. a processing chamber; 13. a material conveying groove; 14. a storage plate; 141. a through hole; 142. a guide block; 143. a pressing unit; 144. pushing the unit; 15. cutting a groove; 16. a lifting unit; 17. a toothed plate; 2. a cutting section; 21. a lifting plate; 22. a cutting unit; 3. a clamping member; 30. a threaded pin; 31. an inner rotating rod; 32. a polish rod; 33. a tightening block; 34. a worm wheel; 35. a worm; 36. a tooth sleeve; 37. a hollow turntable; 371. a friction bar; 372. an elastic member; 38. a bracket; 39. a clamping plate; 4. a feeding part; 41. a carriage; 42. a guide plate; 43. a telescopic rod; 44. an electric expansion plate; 45. and driving the unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. 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.

The invention is further described below with reference to examples.

Examples:

referring to fig. 1-8, the present invention provides a technical solution: a metal cutting device for door and window manufacture, comprising:

the device comprises an operation main body 1, wherein the operation main body 1 comprises a workbench 11, a processing cavity 12 and a material conveying groove 13 are formed in the workbench 11, and a storage plate 14 which is flush with the horizontal plane of the material conveying groove 13 is fixedly connected to the inner wall of the processing cavity 12;

the cutting part 2 comprises a lifting plate 21, the processing cavity 12 is in sliding connection with the outer surface of the lifting plate 21 through an inner sliding groove formed in the inner wall of the processing cavity, a cutting unit 22 is detachably arranged on the upper surface of the lifting plate 21, a cutting groove 15 which can be used for the reciprocating passing of saw blades on the cutting unit 22 is formed in the object placing plate 14, the saw blades on the two groups of cutting units 22 are arranged at 90 degrees and can be finely adjusted, when the two groups of saw blades rotating at high speed synchronously move upwards, the saw blades sequentially pass through the cutting groove 15 and cut off bridge-cut-off aluminum profiles on the upper surface of the object placing plate 14, the cutting efficiency is high, the precision is high, the trouble of repeated positioning is avoided, and the lifting unit 16 connected with the lower surface of the lifting plate 21 is fixedly connected to the bottom of the inner wall of the processing cavity 12;

wherein, the inside rotation of putting thing board 14 is connected with the clamping piece 3 that can be used to support tight section bar surface, and lifting plate 21 upper surface fixedly connected with can be used to adjust the pinion rack 17 of clamping piece 3 position.

Still include material loading portion 4, material loading portion 4 includes carriage 41, and workstation 11 is close to carriage 41 one side fixedly connected with guide board 42, and guide board 42's slope design does benefit to the steady slow slip of aluminium alloy to the junction of conveyer belt and workstation 11, and guide board 42 below is provided with telescopic link 43, and the inside sliding connection of workstation 11 has the electric expansion plate 44 that is connected with telescopic link 43 bottom, and workstation 11 is kept away from processing chamber 12 one side fixedly connected with drive unit 45.

The object placing plate 14 and the lifting plate 21 are both internally provided with through holes 141 for discharging waste, the object placing plate 14 is fixedly connected with a pressing unit 143 through a guide block 142 arranged at the top of the object placing plate, and a pushing unit 144 connected with the top of the object placing plate 14 is arranged outside the guide block 142.

The clamping piece 3 comprises an inner rotating rod 31, the circumferential surface of the inner rotating rod 31 is rotationally connected with the inside of the storage plate 14, a polish rod 32 is fixedly connected to the top end of the inner rotating rod 31, a tight supporting block 33 which is attached to an external section bar is sleeved on the circumferential outer surface of the polish rod 32, the tight supporting block 33 is designed into a hexagonal shape, the tight supporting block 33 can rotate around the outer surface of the polish rod 32, when an aluminum section bar slides to pass through the upper surface of the storage plate 14, the aluminum section bar contacts the outer surface of the tight supporting block 33, the tight supporting block 33 can rotate, the sliding direction of the aluminum section bar is corrected, and the phenomenon that the offset is too large in the sliding process of the aluminum section bar, so that the aluminum section bar impacts a port of the conveying groove 13 is avoided.

The inner rotating rod 31 is connected with a worm 35 in a meshed manner through a worm wheel 34 arranged at the bottom end of the inner rotating rod, one end, far away from the toothed plate 17, of the worm 35 is connected with the inside of the workbench 11 in a rotating manner, and the worm 35 is connected with the outer surface of the toothed plate 17 in a meshed manner through a toothed sleeve 36 sleeved on the outer side of the worm 35.

The worm 35 is close to pinion rack 17 one end and is the round platform design, and the round platform face of worm 35 closely laminates there is hollow carousel 37, and hollow carousel 37 surface fixedly connected with support 38, and tooth cover 36 inner wall fixedly connected with and support 38 cardboard 39 that the surface is laminated mutually, and support 38 is kept away from hollow carousel 37 one side rotation and is connected with threaded pin 30, threaded pin 30 surface and the inside threaded connection of tooth cover 36.

The inner wall of the hollow turntable 37 is fixedly connected with a plurality of groups of friction strips 371, and one side of the hollow turntable 37 away from the threaded pin 30 is fixedly connected with an elastic piece 372 (which can be a spring or a bent plate) attached to the end face of the worm 35. The friction strips 371 on the inner wall of the hollow turntable 37 and the round table surface of the worm 35 generate sliding friction, so that the toothed plate 17 can be ensured to move upwards continuously, and the worm wheel 34 and the worm 35 can be kept in a pre-tightening state all the time in the cutting process of the cutting unit 22, so that the loose of the abutting block 33 is avoided.

Referring to fig. 1-8, when an aluminum alloy door and window is processed, a broken bridge aluminum profile is required to be cut into different parts and then assembled, most aluminum alloy doors and windows are cut into 45-degree angles to be spliced, however, most of the existing automatic cutting devices adopt two machine heads to alternately cut and discharge, when a saw blade on a first machine head performs 45-degree cutting on the broken bridge aluminum profile, a mechanical arm pulls back the broken bridge aluminum profile, and a saw blade on a second machine head performs 45-degree cutting on the end part of the profile with the opposite and redundant angle, so that the bevel ports at two ends of the cut profile are symmetrical, but the cutting process requires the mechanical arm to reciprocally pull the profile and locate for multiple times, and the whole operation is complicated;

in order to overcome the defects, the invention provides a metal cutting device for door and window manufacture.

Specifically, bridge cut-off aluminium alloy material loading:

firstly, the aluminum profile is placed on a conveying frame 41 of the feeding part 4, the conveying belt drives the aluminum profile to move towards the conveying groove 13 by means of self friction force, when the aluminum profile slides to the upper part of the guide plate 42, the inclined design of the guide plate 42 is beneficial to smooth and slow sliding of the aluminum profile to the joint of the conveying belt and the workbench 11, then the telescopic rod 43 stretches upwards, the electric telescopic plate 44 slides towards the interior of the workbench 11, the telescopic rod 43 is driven to be attached to the outer surface of the aluminum profile, the aluminum profile is driven to move slowly into the conveying groove 13 (according to the cutting length requirement, the electric baffle sliding inside the workbench is limited and adjusted and fixed by the positioning pin, and then the cutting length is determined). Secondly, the hydraulic telescopic rod inside the driving unit 45 pushes the aluminum profile to slide along the inner wall of the conveying chute 13 (the width of the conveying chute 13 is larger than that of the aluminum profile, and the aluminum profile processing of different sizes in a certain range is met), until the end part of the outer surface of the aluminum profile is tightly attached to the electric baffle, meanwhile, the clamping piece 3 transversely fixes the outer surface of the aluminum profile, and the pressing unit 143 vertically fixes the outer surface of the aluminum profile (the pressing unit 143 is preferably an air cylinder).

Cutting the broken bridge aluminum profile:

after the clamping piece 3 and the pressing unit 143 fix the outer surface of the aluminum profile, the hydraulic telescopic rod inside the lifting unit 16 drives the lifting plate 21 to move upwards (the outer surface of the lifting plate 21 is in sliding connection with the inner sliding groove formed in the inner wall of the processing cavity 12), the cutting unit 22 is detachably arranged on the upper surface of the lifting plate 21 (the saw blades on the two groups of cutting units 22 are installed at 90 degrees and can be finely adjusted), the two groups of saw blades rotating at high speed move upwards synchronously, sequentially pass through the cutting groove 15 and cut the broken bridge aluminum profile on the upper surface of the opposite object plate 14, and as the waste broken bridge aluminum profile above the through hole 141 is always acted by the downward pressure of the pressing unit 143, the position of the waste broken bridge aluminum profile is always kept constant, the deformation of cutting openings is avoided (the broken bridge aluminum profile on two sides of the waste broken bridge aluminum profile is always acted by the acting force of the clamping piece 3), finally the pressing unit 143, the clamping piece 3 and the electric baffle are reset, the pushing unit 144 drives the waste broken bridge aluminum profile to slide to fall into the through hole 141 rapidly, the hydraulic telescopic rod inside the driving unit 45 pushes the waste broken bridge aluminum profile to slide along the inner wall of the upper surface of the aluminum profile to slide along the upper surface of the aluminum profile 13, and the cut aluminum profile is continuously separated from the cut groove 13, and the cut out of the cut aluminum profile is continuously and separated from the cut groove is continuously and separated from the outer surface is continuously. According to the invention, the cutting part 2 is matched with the clamping piece 3 and the pressing machine set 143 to cut the aluminum profile at one time, compared with the traditional automatic cutting device, most of the cutting device adopts two machine heads to alternately cut and discharge, when the saw blade on the first machine head is used for cutting the broken bridge aluminum profile at 45 degrees, the mechanical arm is used for pulling back the broken bridge aluminum profile, and the saw blade on the second machine head is used for cutting the end part of the redundant profile with the opposite angle at 45 degrees, so that the bevel ports at two ends of the cut profile are symmetrical.

In order to meet the requirements of processing aluminum profiles of different sizes in a certain range, the width of the material conveying groove 13 is larger than that of the aluminum profiles, and as the material placing plate 14 is arranged in the middle of the material conveying groove 13 and is used for cutting a carrying surface of the aluminum profiles (the upper surface of the material placing plate 14 is flush with the bottom of the inner wall of the material conveying groove 13), a disconnection part exists between the material conveying grooves 13, when the aluminum profiles slide along the inner wall of the material conveying groove 13, the width of the material conveying groove 13 is larger than that of the aluminum profiles, the aluminum profiles are easy to deviate in the sliding process, and particularly when the aluminum profiles pass through the upper surface of the material placing plate 14, the end parts of the aluminum profiles are easy to collide with the port of the material conveying groove 13.

The design advantage of the clamping piece 3 is as follows:

firstly, the abutting block 33 is designed to be hexagonal, the abutting block 33 can rotate around the outer surface of the polish rod 32, when the aluminum profile slides through the upper surface of the storage plate 14, the aluminum profile contacts the outer surface of the abutting block 33, the abutting block 33 can rotate, the sliding direction of the aluminum profile is corrected, and the phenomenon that the aluminum profile impacts the port of the material conveying groove 13 due to overlarge offset in the sliding process of the aluminum profile is avoided.

Secondly, replace current electric putter or pneumatic putter with supporting tight piece 33 (electric putter or pneumatic putter need independent design, and do not possess correction aluminium alloy slip direction function), in aluminium alloy tip supporting tightly behind electric baffle, the inside hydraulic telescoping rod of elevator group 16 drives lifter plate 21 upward movement, drive pinion rack 17 upward movement, because worm 35 is through the cover tooth cover 36 of being established in its outside and the meshing of pinion rack 17 surface is connected, so when lifter plate 21 upward movement, drive worm 35 through tooth cover 36 and rotate around workstation 11 inside, worm 35 drives worm wheel 34 and rotates, drive interior bull stick 31 and rotate around placing thing board 14 inside, because interior bull stick 31 top and polished rod 32 lower surface non-center installation, in the polished rod 32 rotation process, can drive supporting tight piece 33 to one side of aluminium alloy surface motion, supporting tight piece 33 extrudees aluminium alloy surface, make it closely laminate on the inner wall of material conveying groove 13 and the guide block 142 surface (replace traditional electric putter or pneumatic putter, realize the tight to the clamp of aluminium alloy surface with the help of lifter plate 21 upward movement state, the time of synchronous realization is to the independent setting up electric putter, or the tight piece 33 of supporting tight piece 33, and can not rotate with the same time rotate the smooth rod 33 to the surface of polished rod 32, and the surface is the realization is rotated clockwise to the surface is rotated to the smooth rod 33, and is rotated to the surface is rotated to the smooth rod 32 is rotated to the surface is fixed to the surface is rotated to the side of the smooth rod 33.

Thirdly, the strength of the abutting block 33 is adjustable, and as the materials of the aluminum profiles are different, the clamping strength born by different aluminum profiles is different.

The clamping force of the clamping block 33 can be adjusted according to the invention:

specifically, the end of the worm 35, which is close to the toothed plate 17, is designed as a round table, the round table surface of the worm 35 is tightly attached to the hollow rotary table 37, a plurality of groups of friction strips 371 are fixedly connected to the inner wall of the hollow rotary table 37, a support 38 is fixedly connected to the outer surface of the hollow rotary table 37, a clamping plate 39 attached to the outer surface of the support 38 is fixedly connected to the inner wall of the toothed sleeve 36, initially, the toothed plate 17 drives the toothed sleeve 36 to rotate, the clamping plate 39 drives the support 38 and the hollow rotary table 37 to synchronously rotate (the support 38 and the clamping plate 39 can transversely slide in a short distance), the hollow rotary table 37 drives the worm 35 to synchronously rotate (static friction force) by means of the friction strips 371, when the abutting block 33 abuts against the outer surface of an aluminum profile, the worm wheel 34 and the worm 35 stop moving, at the moment, the friction strips 371 on the inner wall of the hollow rotary table 37 and the round table surface of the worm 35 slide, so that the toothed plate 17 can be continuously moved upwards, and in the cutting process of the cutting unit 22 can be maintained, the worm wheel 34 and the worm 35 are always in a pre-tightening state, and the abutting block 33 is prevented from loosening. The force for driving the abutting block 33 to attach to the aluminum profile can be changed by adjusting the pressing force between the friction strip 371 and the round table surface of the worm 35, the screw thread pin 30 is rotated around the inside of the tooth sleeve 36 through the screw driver (the screw thread pin 30 can slide back and forth in the tooth sleeve 36), the screw thread pin 30 is matched with the elastic piece 372, the distance between the support 38, the hollow turntable 37 and the round table surface of the worm 35 is changed, and further the adjustment of the pressing force between the friction strip 371 and the round table surface of the worm 35 is realized, the aluminum profile is ensured to be clamped by the abutting block 33, and the aluminum profile cannot be damaged.

The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A metal cutting device for door and window manufacture, comprising:

the device comprises an operation main body (1), wherein the operation main body (1) comprises a workbench (11), a processing cavity (12) and a material conveying groove (13) are formed in the workbench (11), and a material placing plate (14) which is flush with the horizontal plane of the material conveying groove (13) is fixedly connected to the inner wall of the processing cavity (12);

the cutting part (2), the cutting part (2) comprises a lifting plate (21), the processing cavity (12) is in sliding connection with the outer surface of the lifting plate (21) through an inner sliding groove formed in the inner wall of the processing cavity, a cutting unit (22) is detachably arranged on the upper surface of the lifting plate (21), a cutting groove (15) which can be used for a saw blade on the cutting unit (22) to pass through in a reciprocating manner is formed in the storage plate (14), and a lifting unit (16) connected with the lower surface of the lifting plate (21) is fixedly connected to the bottom of the inner wall of the processing cavity (12);

the inside of the storage plate (14) is rotationally connected with a clamping piece (3) which can be used for propping against the outer surface of the profile, and the upper surface of the lifting plate (21) is fixedly connected with a toothed plate (17) which can be used for adjusting the position of the clamping piece (3);

the clamping piece (3) comprises an inner rotating rod (31), the circumferential surface of the inner rotating rod (31) is rotationally connected with the inside of the storage plate (14), a polished rod (32) is fixedly connected to the top end of the inner rotating rod (31), and a tight abutting block (33) which is attached to an external section bar is sleeved on the circumferential outer surface of the polished rod (32); the top end of the inner rotating rod (31) is arranged in a non-central way with the lower surface of the polish rod (32);

the inner rotating rod (31) is connected with a worm (35) in a meshing manner through a worm wheel (34) arranged at the bottom end of the inner rotating rod, one end, far away from the toothed plate (17), of the worm (35) is rotationally connected with the inside of the workbench (11), and the worm (35) is connected with the outer surface of the toothed plate (17) in a meshing manner through a toothed sleeve (36) sleeved on the outer side of the worm;

one end of the worm (35) close to the toothed plate (17) is in a round table design, a round table surface of the worm (35) is tightly attached with a hollow rotary table (37), a support (38) is fixedly connected to the outer surface of the hollow rotary table (37), a clamping plate (39) attached to the outer surface of the support (38) is fixedly connected to the inner wall of the toothed sleeve (36), a threaded pin (30) is rotationally connected to one side, away from the hollow rotary table (37), of the support (38), and the outer surface of the threaded pin (30) is in threaded connection with the inside of the toothed sleeve (36);

the inner wall of the hollow rotary table (37) is fixedly connected with a plurality of groups of friction strips (371), and one side, away from the threaded pin (30), of the hollow rotary table (37) is fixedly connected with an elastic piece (372) attached to the end face of the worm (35).

2. A metal cutting device for door and window manufacture according to claim 1, wherein: still include material loading portion (4), material loading portion (4) include carriage (41), workstation (11) are close to carriage (41) one side fixedly connected with guide board (42), guide board (42) below is provided with telescopic link (43), workstation (11) inside sliding connection has electric expansion plate (44) that are connected with telescopic link (43) bottom, workstation (11) are kept away from processing chamber (12) one side fixedly connected with drive unit (45).

3. A metal cutting device for door and window manufacture according to claim 1, wherein: the utility model discloses a waste material discharging device, including thing board (14) and lifter plate (21), put thing board (14) and lifter plate (21) are inside to be offered and are used for waste material discharging through-hole (141), put thing board (14) through setting up guide block (142) fixedly connected with push unit (143) at its top, guide block (142) outside is provided with and puts pushing unit (144) that thing board (14) top is connected.