Building profile cutting device and cutting method thereof

Abstract

The application discloses a building profile cutting device and a cutting method thereof, wherein the output shaft of a cutting motor is in transmission connection with the rotating shaft of a cutting piece, a driving block is fixedly connected to a connecting plate, the middle part of a workbench is fixedly connected with a hinged seat, the hinged seat is rotationally connected with a pressing frame, and the driving block drives the pressing frame to overturn when moving from one side of the hinged seat to the other side. The driving block is installed on the connecting plate for installing the cutting piece, and the driving block moves synchronously with the cutting piece, and the driving block drives the pressing frame to overturn and abut against the pressing frame during movement, so that the workpiece is clamped, the driving block is driven to overturn and press the pressing frame synchronously during the movement of the cutting piece; after the workpiece on one side is cut, the workpiece on the other side is cut, and the workpiece is continuously cut through cyclic operation, so that the waiting time of the machine and the person is reduced, and the work efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of profile cutting, in particular to a building profile cutting device and a cutting method thereof. BACKGROUND

[0002] A profile is an object with a certain geometric shape made of iron or steel and a material with a certain strength and toughness through rolling, foundation and other processes. Profiles are widely used in industrial production. In construction engineering, a large amount of building profiles are also needed.

[0003] In the cutting of profiles, the existing cutting equipment needs to clamp the profile on the workbench during cutting, and then cut the profile. After cutting, the cutting machine is stopped, the profile is taken off, and then the profile to be cut is placed on the workbench for cutting after replacement. This operation causes the cutting machine to stop and wait for loading and unloading during the loading and unloading process, and the operator waits for cutting during cutting, resulting in a large amount of waiting time and low work efficiency. Therefore, the existing cutting device needs to be improved. SUMMARY

[0004] The present application aims to solve the technical problem of long waiting time in the cutting of existing profiles, and provides a building profile cutting device and a cutting method thereof.

[0005] In order to achieve the above-mentioned purpose, the following technical solutions are adopted in the present application:

[0006] A building profile cutting device comprises a workbench, a rack fixedly connected to the workbench, a cross beam fixedly connected to the rack, a horizontal moving assembly provided on the cross beam, a first moving block moving up and down provided on the horizontal moving assembly, a connecting plate fixedly connected to the first moving block, a cutting motor installed on the connecting plate, a cutting piece rotatably connected to the connecting plate, and a driving block fixedly connected to the connecting plate. The middle part of the workbench is fixedly connected to a hinged seat, the hinged seat is rotatably connected to a pressing frame, the pressing frame comprises a first pressing beam and a second pressing beam, the first pressing beam and the second pressing beam are perpendicular to each other and are integrally connected at the end portions, the first pressing beam and the second pressing beam are hingedly connected to the hinged seat, and the driving block drives the pressing frame to overturn when moving from one side of the hinged seat to the other side. The driving block is pressed on the first pressing beam or the second pressing beam during cutting, so that the first pressing beam or the second pressing beam clamps the workpiece below.

[0007] Further, the side wall of the first pressing beam is fixedly connected with a first fixed column, the side wall of the second pressing beam is fixedly connected with a second fixed column, the hinge seat is fixedly connected with a third fixed column, and the pressing frame is hingedly connected with the hinge seat through a first pin shaft; when the first pressing beam is in a horizontal position state for pressing the workpiece, the center line of the second fixed column and the third fixed column is located on the side of the first pin shaft close to the first fixed column, and when the second pressing beam is in a horizontal position state for pressing the workpiece, the center line of the first fixed column and the third fixed column is located on the side of the first pin shaft close to the second fixed column, a first tension spring is connected between the first fixed column and the third fixed column, the first tension spring provides a spring tension force to the first fixed column and the third fixed column, and a second tension spring is connected between the second fixed column and the third fixed column, the second tension spring provides a spring tension force to the second fixed column and the third fixed column.

[0008] Further, the first pressing beam and the second pressing beam each comprise a bottom plate and a side plate, the side plate is fixedly connected to the side edge of the bottom plate, a threaded column is movably connected to the bottom plate, the threaded column is fixedly connected with a clamping plate through the bottom plate, the clamping plate is located on the side of the bottom plate close to the workbench, a first compression spring is sleeved on the threaded column, the first compression spring is located between the bottom plate and the clamping plate, and an adjusting nut is threadedly connected to the threaded column, the adjusting nut is located on the side of the bottom plate away from the clamping plate.

[0009] Further, the surface of the clamping plate in contact with the workpiece is fixedly connected with a backing plate, and the backing plate is made of soft material.

[0010] Further, the bottom of the driving block is fixedly connected with a fixed cylinder, a sliding cylinder moving up and down is slidably connected in the fixed cylinder, a roller is rotatably connected to the bottom of the sliding cylinder, the roller is arranged in parallel with the cross beam, so that the roller rolls along the upper end surface of the first pressing beam or the second pressing beam during the movement and cutting of the cutting piece, and a second compression spring is arranged in the fixed cylinder, the lower end of the second compression spring abuts against the sliding cylinder to provide a downward elastic force to the sliding cylinder.

[0011] Further, a first enclosing stopper is fixedly connected to the middle of the workbench, second enclosing stoppers are fixedly connected to the two sides of the workbench, and an end stopper is arranged at the end of the workbench away from the rack, the first enclosing stopper, the second enclosing stoppers, and the end stopper enclose a limiting area for accommodating the workpiece.

[0012] Further, the crossbeam is rotationally connected with a horizontally arranged first screw rod, the crossbeam is provided with a first driving motor, the output shaft of the first driving motor is fixedly connected with the end of the first screw rod, the horizontal moving assembly comprises a first mounting plate, the first mounting plate is threadedly connected with the first screw rod, so that the output shaft of the first driving motor rotationally drives the first mounting plate to move horizontally; the first mounting plate is rotationally connected with a vertically arranged second screw rod, the first mounting plate is provided with a second driving motor, the output shaft of the second driving motor is fixedly connected with the end of the second screw rod, the second screw rod is threadedly connected with the first moving block, and the output shaft of the second driving motor rotationally drives the first moving block to move up and down.

[0013] Further, the connecting plate is fixedly connected with a protective cover, the protective cover is sleeved outside the cutting blade, and the protective cover covers the upper half of the cutting blade.

[0014] Further, the workbench is provided with a material supporting roller, the material supporting roller is rotationally installed on the workbench, and the material supporting roller is located on the side, away from the pressing frame, of the rack.

[0015] A building profile cutting method adopts the building profile cutting device and comprises the following steps:

[0016] 1. The workpiece is placed on the left side area of the workbench, the connecting plate is driven to move to the left side of the workbench and to move downward, the driving block is driven to press on the first pressing beam, the first pressing beam clamps the workpiece, the cutting motor is started to drive the cutting blade to rotate, the horizontal moving assembly moves along the crossbeam horizontally, and the rotating cutting blade moves horizontally to cut the clamped workpiece;

[0017] 2. After the workpiece on the left side of the workbench is cut, the connecting plate is driven to move upward and then to the right side of the hinged seat, the driving block pushes the pressing frame to flip in the process of moving to the right side, the connecting plate is driven to move downward, the driving block is pressed on the second pressing beam on the right side to clamp the workpiece, the connecting plate moves horizontally to drive the rotating cutting blade to cut the workpiece on the right side;

[0018] 3. While the workpiece on the right side is cut, the first pressing beam is rotated upward to the vertical state to unload and load the workpiece on the left side;

[0019] 4. After the workpiece on the right side is cut, the connecting plate is driven to move upward and then to the left side of the hinged seat, the driving block pushes the pressing frame to flip in the process of moving to the left side, the connecting plate is driven to move downward, the driving block is pressed on the first pressing beam on the left side to clamp the workpiece, the workpiece on the left side is cut through the action of step 1, and meanwhile the workpiece on the right side is unloaded and loaded; the continuous cutting operation is realized through the cyclic operation.

[0020] The building profile cutting device and the cutting method have the following beneficial effects: 1. The driving block is installed on the connecting plate of the cutting piece, the driving block moves synchronously with the cutting piece, the driving block turns over the pressing frame and abuts against the pressing frame during the movement of the driving block, the workpiece is clamped, the driving block turns over and presses the pressing frame during the movement of the cutting piece, and the clamping operation is automatically completed, the clamping is synchronized with the cutting, and the workpiece is in the clamped state during the cutting.

[0021] 2. After the workpiece on one side is cut, the workpiece on the other side is cut, the workpiece after cutting is unloaded and loaded at the same time, the workpiece is continuously cut through the cyclic operation, the waiting time of the machine and the person is reduced, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A front view structural schematic diagram of the building profile cutting device is provided.

[0023] Figure 2 A front view structural schematic diagram of the building profile cutting device is provided. Figure 1 A front view structural schematic diagram of the building profile cutting device is provided.

[0024] Figure 3 A front view structural schematic diagram of the building profile cutting device is provided. Figure 1 A front view structural schematic diagram of the building profile cutting device is provided.

[0025] Figure 4 A front view structural schematic diagram of the building profile cutting device is provided.

[0026] Figure 5 A front view structural schematic diagram of the building profile cutting device is provided. Figure 4 A front view structural schematic diagram of the building profile cutting device is provided.

[0027] Figure 6 A front view structural schematic diagram of the building profile cutting device is provided.

[0028] IDENTIFICATION OF THE DRAWINGS:

[0029] 1, workbench; 11, rack; 12, first enclosing stopper; 13, second enclosing stopper; 14, end stopper; 15, material supporting roller; 2, cross beam; 21, first screw rod; 22, first driving motor; 3, horizontal moving assembly; 31, first mounting plate; 32, second screw rod; 33, second driving motor; 4, first moving block; 5, connecting plate; 51, cutting motor; 52, cutting blade; 53, protective cover; 6, driving block; 61, fixed cylinder; 62, sliding cylinder; 63, roller; 64, second compression spring; 7, hinged seat; 71, third fixed column; 8, pressing frame; 81, first pressing beam; 811, bottom plate; 812, side plate; 813, threaded column; 814, clamping plate; 815, first compression spring; 82, second pressing beam; 83, first fixed column; 84, second fixed column; 85, first pin shaft; 86, first tension spring; 87, second tension spring. DETAILED DESCRIPTION

[0030] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the application.

[0031] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. It should be explained that, in the embodiments of the application, all the directional indications (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship between the components, the motion conditions, etc. in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly. The connection can be direct connection or indirect connection.

[0032] As Figures 1-6As shown, a building profile cutting device, including a workbench 1, the workbench 1 is fixedly connected with a rack 11, the rack 11 is fixedly connected with a crossbeam 2, the crossbeam 2 is provided with a horizontal moving assembly 3, the horizontal moving assembly 3 is provided with a first moving block 4 moving up and down, the first moving block 4 is fixedly connected with a connecting plate 5, the connecting plate 5 is installed with a cutting motor 51, a cutting piece 52 is rotatably connected on the connecting plate 5, and the output shaft of the cutting motor 51 is drivingly connected with the rotating shaft of the cutting piece 52 to drive the cutting piece 52 to rotate, and the connecting plate 5 is fixedly connected with a driving block 6; the middle part of the workbench 1 is fixedly connected with a hinged seat 7, the hinged seat 7 is rotatably connected with a pressing frame 8, the pressing frame 8 includes a first pressing beam 81 and a second pressing beam 82, the first pressing beam 81 and the second pressing beam 82 are perpendicular to each other and are integrally connected at the end portions, the connecting part of the first pressing beam 81 and the second pressing beam 82 is hingedly connected with the hinged seat 7, and the driving block 6 drives the pressing frame 8 to overturn when moving from one side of the hinged seat 7 to the other side, and the driving block 6 is pressed on the first pressing beam 81 or the second pressing beam 82 during cutting, so that the first pressing beam 81 or the second pressing beam 82 clamps the workpiece below.

[0033] With the above technical scheme, when in use, a plurality of workpieces are placed side by side on the workbench 1, the connecting plate 5 is driven to descend, the connecting plate 5 is located on the left side of the hinged seat 7, the driving block 6 is pressed on the first pressing beam 81, the first pressing beam 81 clamps the workpiece, the horizontal moving assembly 3 moves horizontally along the crossbeam 2, the rotating cutting piece 52 moves horizontally to cut the clamped workpiece, and the connecting plate 5 moves upward after cutting is completed; then the connecting plate 5 moves to the right side of the hinged seat 7, pushes the pressing frame 8 to overturn during moving to the right side, then the connecting plate 5 moves downward, the driving block 6 is pressed on the second pressing beam 82 on the right side to clamp the workpiece, the connecting plate 5 moves horizontally to drive the rotating cutting piece 52 to cut the workpiece on the right side, while the first pressing beam 81 rotates upward to the vertical state, and the first pressing beam 81 is separated from the workpiece on the left side, so that the workpiece on the left side can be unloaded and fed; when the workpiece on the right side is cut, the workpiece on the left side is cut, and the workpiece on the right side is unloaded and fed at the same time, the workpiece is continuously cut in a cycle operation, the waiting time of the machine and the person is reduced, and the work efficiency is improved; and during the movement of the cutting piece 52, the driving block 6 drives the pressing frame 8 to overturn and press, so that the clamping operation is automatically completed, and the clamping and cutting are synchronized, so that the workpiece is in the clamped state during cutting.

[0034] Specifically, the side wall of the first pressing beam 81 is fixedly connected with a first fixed column 83, the side wall of the second pressing beam 82 is fixedly connected with a second fixed column 84, the hinge seat 7 is fixedly connected with a third fixed column 71, and the pressing frame 8 is hingedly connected with the hinge seat 7 through a first pin shaft 85; when the first pressing beam 81 is in a horizontal position state for pressing the workpiece, the center line of the second fixed column 84 and the third fixed column 71 is located on the side of the first pin shaft 85 close to the first fixed column 83, and when the second pressing beam 82 is in a horizontal position state for pressing the workpiece, the center line of the first fixed column 83 and the third fixed column 71 is located on the side of the first pin shaft 85 close to the second fixed column 84, a first tension spring 86 is connected between the first fixed column 83 and the third fixed column 71, the first tension spring 86 provides a spring tension to the first fixed column 83 and the third fixed column 71, a second tension spring 87 is connected between the second fixed column 84 and the third fixed column 71, and the second tension spring 87 provides a spring tension to the second fixed column 84 and the third fixed column 71. After the workpiece is placed on the workbench 1, the connecting plate 5 drives the driving block 6 to move to the side of the first pressing beam 81, the first pressing beam 81 is flipped over the table top of the workbench 1 under the pushing of the driving block 6, and the first pressing beam 81 is pressed on the workpiece on the workbench 1 under the combined action of the first tension spring 86 and the second tension spring 87, when the first pressing beam 81 is in a horizontal position, the second tension spring 87 flips over the longest point, and the tension provided by the second tension spring 87 is located on the side of the first pin shaft 85 close to the first fixed column 83, so that the first pressing beam 81 is kept pressed. Similarly, when the cutting piece 52 cuts the workpiece on the other side of the hinge seat 7, the connecting plate 5 drives the driving block 6 to move to the right side to press the second pressing beam 82, so that the second pressing beam 82 is flipped over the surface of the workbench 1, and the second pressing beam 82 is pressed on the workpiece under the combined action of the first tension spring 86 and the second tension spring 87, and is kept stable.

[0035] Specifically, the first pressing beam 81 and the second pressing beam 82 each include a bottom plate 811 and a side plate 812, the side plate 812 is fixedly connected to the side of the bottom plate 811, a threaded column 813 is movably connected to the bottom plate 811, the threaded column 813 is fixedly connected with a clamping plate 814 through the bottom plate 811, the clamping plate 814 is located on the side of the bottom plate 811 close to the workbench 1, a first compression spring 815 is sleeved on the threaded column 813, the first compression spring 815 is located between the bottom plate 811 and the clamping plate 814, and an adjusting nut is threadedly connected to the threaded column 813, and the adjusting nut is located on the side of the bottom plate 811 away from the clamping plate 814. When the first pressing beam 81 clamps the workpiece, the clamping plate 814 is attached to the surface of the workpiece and clamps the workpiece, the distance between the clamping plate 814 and the surface of the workbench 1 can be adjusted through the adjusting nut, so that workpieces of different heights can be adapted; and the clamping plate 814 elastically contacts the workpiece through the first compression spring 815, so that rigid collision in the overturning process of the pressing frame 8 is avoided, and damage to the workpiece is avoided.

[0036] Specifically, the surface of the clamping plate 814 in contact with the workpiece is fixedly connected with a pad, and the pad is made of soft material. Specifically, the pad is made of rubber, and in the process of clamping the workpiece, the pad contacts the workpiece and deforms on the surface, so that the contact area with the workpiece is increased, and the height error of multiple workpieces can be adapted, and the workpiece below the clamping plate 814 is clamped.

[0037] Specifically, the bottom of the driving block 6 is fixedly connected with a fixed cylinder 61, a sliding cylinder 62 that moves up and down is slidably connected in the fixed cylinder 61, a roller 63 is rotatably connected to the bottom of the sliding cylinder 62, the roller 63 is arranged in parallel with the cross beam 2, so that the roller 63 rolls along the upper end surface of the first pressing beam 81 or the second pressing beam 82 during the movement of the cutting blade 52, and a second compression spring 64 is arranged in the fixed cylinder 61, and the lower end of the second compression spring 64 abuts against the sliding cylinder 62 to provide the sliding cylinder 62 with downward elastic force. The driving block 6 indirectly rolls in contact with the first pressing beam 81 or the second pressing beam 82 through the roller 63, so as to reduce the resistance in the movement of the driving block 6, and the driving block 6 moves downward during cutting, so that the roller 63 is pressed on the first pressing beam 81 or the second pressing beam 82, thereby providing clamping force for the workpiece; the roller 63 and the first pressing beam 81 or the second pressing beam 82 are elastically contacted through the second compression spring 64, so as to avoid damage to the driving part caused by rigid contact.

[0038] Specifically, the first enclosing block 12 is fixedly connected to the middle of the workbench 1, the second enclosing block 13 is fixedly connected to the two sides of the workbench 1, and the end block 14 is arranged at one end of the workbench 1 away from the rack 11. The first enclosing block 12, the second enclosing block 13 and the end block 14 enclose a limiting area for accommodating the workpiece. The workpiece is placed in the area enclosed by the first enclosing block 12, the second enclosing block 13 and the end block 14. The workpiece is blocked by the first enclosing block 12 and the second enclosing block 13 to prevent the workpiece from moving outward. The end of the workpiece abuts against the end block 14, so that the cut workpiece reaches the required length. The end block 14 is connected to the workbench 1 by screwing. By adjusting the position of the end block 14, the required cutting length of the workpiece can be adjusted.

[0039] Specifically, the first screw rod 21 horizontally arranged is rotatably connected to the cross beam 2, the first driving motor 22 is installed on the cross beam 2, the output shaft of the first driving motor 22 is fixedly connected to the end of the first screw rod 21, the horizontal moving assembly 3 comprises a first mounting plate 31, the first mounting plate 31 is threadedly connected with the first screw rod 21, so that the output shaft of the first driving motor 22 drives the first mounting plate 31 to move horizontally, the second screw rod 32 vertically arranged is rotatably connected to the first mounting plate 31, the second driving motor 33 is installed on the first mounting plate 31, the output shaft of the second driving motor 33 is fixedly connected to the end of the second screw rod 32, the second screw rod 32 is threadedly connected with the first moving block 4, and the output shaft of the second driving motor 33 drives the first moving block 4 to move up and down. By the first driving motor 22 and the second driving motor 33, the first moving block 4 can be driven to move horizontally and up and down, so as to drive the connecting plate 5, the driving block 6 and the cutting piece 52 installed on the first moving block 4 to move horizontally and up and down together.

[0040] In some embodiments, the connecting plate 5 is fixedly connected with a protective cover 53, the protective cover 53 is sleeved outside the cutting piece 52, and the upper half of the cutting piece 52 is covered by the protective cover 53. The cutting piece 52 is protected by the protective cover 53, and the cutting debris is limited to avoid being thrown into the upper space.

[0041] In some embodiments, the workbench 1 is provided with a material supporting roller 15, the material supporting roller 15 is rotatably installed on the workbench 1, and the material supporting roller 15 is located on the side of the rack 11 away from the pressing frame 8. During feeding, the material is placed on the material supporting roller 15. By pushing the workpiece along the material supporting roller 15 under the rolling support of the material supporting roller 15, the workpiece can be pushed to the other side of the workbench 1, so that the workpiece is conveniently fed into the area enclosed by the first enclosing block 12, the second enclosing block 13 and the end block 14 for cutting.

[0042] A building profile cutting method using the building profile cutting device, the steps are as follows:

[0043] 1, the workpiece is placed on the workbench 1 left side area, the driving connecting plate 5 moves to the workbench 1 left side and moves downward, the driving block 6 is pressed on the first pressing beam 81, the first pressing beam 81 clamps the workpiece, the cutting motor 51 starts to drive the cutting blade 52 to rotate, the horizontal moving assembly 3 moves horizontally along the crossbeam 2, and the rotating cutting blade 52 moves horizontally to cut the clamped workpiece;

[0044] 2, after the workpiece on the left side of the workbench 1 is cut, the driving connecting plate 5 moves upward, then moves to the right side of the hinged seat 7, and the driving block 6 pushes the pressing frame 8 to overturn in the process of moving to the right side, the driving connecting plate 5 moves downward, so that the driving block 6 is pressed on the second pressing beam 82 on the right side to clamp the workpiece, and the connecting plate 5 moves horizontally to drive the rotating cutting blade 52 to cut the workpiece on the right side;

[0045] 3, while the workpiece on the right side is cut, the first pressing beam 81 rotates upward to the vertical state to unload and load the workpiece on the left side;

[0046] 4, when the workpiece on the right side is cut, the driving connecting plate 5 moves upward, then moves to the left side of the hinged seat 7, and the driving block 6 pushes the pressing frame 8 to overturn in the process of moving to the left side, the driving connecting plate 5 moves downward, so that the driving block 6 is pressed on the first pressing beam 81 on the left side to clamp the workpiece, the step 1 action is recycled, the workpiece on the left side is cut, and the workpiece on the right side is unloaded and loaded at the same time; the continuous cutting operation is realized by recycling operation.

[0047] The part not involved in the technical scheme can be completed and realized by using the prior art.

[0048] The basic principle, main features and characteristics of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A building profile cutting device, characterized by: The utility model provides a cutting device for workpiece, including workbench (1), workbench (1) fixedly connected with frame (11), frame (11) fixedly connected with crossbeam (2), crossbeam (2) is provided with horizontal movement subassembly (3), horizontal movement subassembly (3) is provided with the first moving block (4) of up and down movement, the first moving block (4) fixedly connected with connecting plate (5), cutting motor (51) is installed on connecting plate (5), cutting piece (52) rotationally connected on connecting plate (5), and the output shaft of cutting motor (51) is transmission connection with the rotation axis of cutting piece (52) to drive cutting piece (52) rotation, the fixedly connected with drive block (6) of connecting plate (5), the middle part of workbench (1) is fixedly connected with hinged seat (7), hinged seat (7) is rotatably connected with the compression frame (8) of hinged seat (7), the compression frame (8) includes first compression beam (81) and second compression beam (82), first compression beam (81) and second compression beam (82) are perpendicular to each other and are integrally connected at the end, and the connecting place of first compression beam (81) and second compression beam (82) is hingedly connected with hinged seat (7), drive block (6) is driven to overturn when moving from one side to the other side of hinged seat (7), and drive block (6) is pressed on first compression beam (81) or second compression beam (82) when cutting, so that first compression beam (81) or second compression beam (82) clamps the workpiece below.

2. A building profile cutting device according to claim 1, characterized in that: The side wall of first compression beam (81) is fixedly connected with first fixed column (83), the side wall of second compression beam (82) is fixedly connected with second fixed column (84), hinged seat (7) is fixedly connected with third fixed column (71), and compression frame (8) is hingedly connected with hinged seat (7) through first pin shaft (85), when first compression beam (81) is pressed to the workpiece and is in horizontal position state, the center line of second fixed column (84) and third fixed column (71) is located on the side of first pin shaft (85) close to first fixed column (83), and when second compression beam (82) is pressed to the workpiece and is in horizontal position state, the center line of first fixed column (83) and third fixed column (71) is located on the side of first pin shaft (85) close to second fixed column (84), first fixed column (83) and third fixed column (71) are connected with first tension spring (86), first tension spring (86) provides spring tension to first fixed column (83) and third fixed column (71), second fixed column (84) and third fixed column (71) are connected with second tension spring, and second tension spring (87) provides spring tension to second fixed column (84) and third fixed column (71).

3. A building profile cutting device according to claim 2, characterized in that: The first pressing beam (81) and the second pressing beam (82) each comprise a bottom plate (811) and a side plate (812) fixedly connected to the side of the bottom plate (811), a threaded column (813) movably connected to the bottom plate (811), a clamping plate (814) fixedly connected to the threaded column (813) and located on the side of the bottom plate (811) close to the workbench (1), a first compression spring (815) sleeved on the threaded column (813) and located between the bottom plate (811) and the clamping plate (814), and an adjusting nut threadedly connected to the threaded column (813) and located on the side of the bottom plate (811) away from the clamping plate (814).

4. A building profile cutting device according to claim 3, characterized in that: The surface of the clamping plate (814) in contact with the workpiece is fixedly connected with a pad plate made of soft material.

5. A building profile cutting device according to claim 1, characterized in that: The bottom of the driving block (6) is fixedly connected with a fixed cylinder (61), a sliding cylinder (62) movably connected to the fixed cylinder (61) is arranged, a roller (63) rotatably connected to the bottom of the sliding cylinder (62) is arranged, the roller (63) is arranged in parallel with the cross beam (2) so that the roller (63) rolls along the upper end surface of the first pressing beam (81) or the second pressing beam (82) during the movement and cutting of the cutting piece (52), and a second compression spring (64) is arranged in the fixed cylinder (61) and abuts against the sliding cylinder (62) to provide downward elastic force for the sliding cylinder (62).

6. A building profile cutting device according to claim 1, characterized in that: The middle of the workbench (1) is fixedly connected with a first enclosing stopper (12), both sides of the workbench (1) are fixedly connected with second enclosing stoppers (13), and an end stopper (14) is arranged at the end of the workbench (1) away from the rack (11), the first enclosing stopper (12), the second enclosing stoppers (13), and the end stopper (14) enclose a limiting area for accommodating the workpiece.

7. A building profile cutting device according to claim 1, characterized in that: The cross beam (2) is rotatably connected with a horizontally arranged first lead screw (21), the cross beam (2) is provided with a first driving motor (22), the output shaft of the first driving motor (22) is fixedly connected with the end of the first lead screw (21), the horizontal moving assembly (3) comprises a first mounting plate (31), the first mounting plate (31) is threadedly connected with the first lead screw (21), so that the output shaft of the first driving motor (22) drives the first mounting plate (31) to move horizontally, the first mounting plate (31) is rotatably connected with a vertically arranged second lead screw (32), the first mounting plate (31) is provided with a second driving motor (33), the output shaft of the second driving motor (33) is fixedly connected with the end of the second lead screw (32), and the second lead screw (32) is threadedly connected with the first moving block (4), so that the output shaft of the second driving motor (33) drives the first moving block (4) to move up and down.

8. A building profile cutting device according to claim 1, characterized in that: The connecting plate (5) is fixedly connected with a protective cover (53), the protective cover (53) is sleeved outside the cutting blade (52), and the protective cover (53) covers the upper part of the cutting blade (52).

9. A building profile cutting device according to claim 1, characterized in that: The workbench (1) is provided with a material supporting roller (15), the material supporting roller (15) is rotatably installed on the workbench (1), and the material supporting roller (15) is located on the side, away from the pressing frame (8), of the rack (11).

10. A method of cutting a building profile, characterized by: The building profile cutting device according to any one of claims 2-9 is used in the following steps:

1. Place the workpiece on the left side of the workbench (1), drive the connecting plate (5) to move to the left side of the workbench (1) and move downward, drive the driving block (6) to press on the first pressing beam (81), the first pressing beam (81) clamps the workpiece, the cutting motor (51) is started to drive the cutting blade (52) to rotate, the horizontal moving assembly (3) moves horizontally along the cross beam (2), and the rotating cutting blade (52) moves horizontally to cut the clamped workpiece; 2. After the workpiece on the left side of the workbench (1) is cut, the connecting plate (5) is moved upward, then moved to the right side of the hinged seat (7), the driving block (6) pushes the pressing frame (8) to flip during the movement to the right side, the connecting plate (5) is moved downward, so that the driving block (6) is pressed on the second pressing beam (82) on the right side to clamp the workpiece, and the connecting plate (5) moves horizontally to drive the rotating cutting blade (52) to cut the workpiece on the right side; 3. While the workpiece on the right side is cut, the first pressing beam (81) is rotated upward to the vertical state to unload and load the workpiece on the left side; 4. After the workpiece on the right side is cut, the connecting plate (5) is moved upward, then moved to the left side of the hinged seat (7), the driving block (6) pushes the pressing frame (8) to flip during the movement to the left side, the connecting plate (5) is moved downward, so that the driving block (6) is pressed on the first pressing beam (81) on the left side to clamp the workpiece, the step 1 is cycled to cut the workpiece on the left side, and the workpiece on the right side is unloaded and loaded at the same time; the continuous cutting operation is realized by the cyclic operation.

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