Metal door and window cutting machine with automatic clamping and fixing functions

Abstract

The invention discloses an automatic clamping and fixing metal door and window cutting machine, and belongs to the technical field of metal door and window machining cutting machines, the automatic clamping and fixing metal door and window cutting machine comprises a rotating seat rotationally mounted on the upper surface of a rack and a conveying frame mounted on the upper surface of the rack, and a supporting frame is fixedly mounted on the outer side of the rotating seat; an air cylinder is fixedly mounted at the upper end of the supporting frame, a mounting plate is fixedly connected to the output end of the air cylinder, and meanwhile a cutting assembly is fixedly mounted on the outer side of the mounting plate; the two first rotating shafts are elastically and rotationally installed on the two sides of the conveying frame on the left side, and conveying assemblies and clamping pieces are fixedly installed on the outer sides of the first rotating shafts correspondingly; and the supporting table is installed above the rotating base, and a cutting seam is formed in the supporting table. According to the automatic clamping and fixing metal door and window cutting machine, metal profiles can be automatically conveyed and positioned, the cutting precision is ensured, and waste chips generated in the cutting process can be automatically swept and cleaned.

Description

Technical Field

[0001] The invention relates to the technical field of metal door and window processing and cutting, in particular to an automatic clamping and fixing metal door and window cutting machine. Background Art

[0002] In the process of metal door and window processing, the metal door and window profiles need to be cut, so a cutting machine is needed. The existing metal door and window cutting machines still have some shortcomings.

[0003] In the prior art, there is a cutting device for building doors and windows with a positioning and protection function, such as the announcement number CN116329654B, which relates to the technical field of door and window cutting. The cutting device includes a workbench, on which a cutting mechanism and a clamping mechanism are installed. The door and window frame is mounted on the clamping mechanism. The clamping mechanism carries and limits the door and window frame, and pushes the door and window frame to the cutting mechanism. The cutting mechanism automatically adjusts the cutting angle according to the cutting angle requirement and cuts the door and window frame. The clamping mechanism controls the distance of the pushed door and window frame according to the cutting length requirement, so as to realize automatic positioning of the cutting position of the door and window frame. Through the cooperation of the cutting mechanism and the clamping mechanism, the door and window frame is automatically positioned and cut, eliminating the manual participation link in the cutting process and improving the cutting efficiency.

[0004] However, the limiting mechanism of the existing metal door and window cutting machine requires multiple separate power devices to drive, which makes the transportation and limiting of the door and window profiles prone to errors, thereby reducing the cutting accuracy. At the same time, it is inconvenient to clean the waste chips generated during the cutting process, and there are certain usage defects. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic clamping and fixing metal door and window cutting machine to solve the problem raised by the above background technology that the metal door and window cutting machines currently on the market are inconvenient to automatically transport and position the profiles and to sweep away and clean the waste chips generated during the cutting process.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic clamping and fixing metal door and window cutting machine, comprising a rotating seat rotatably mounted on the upper surface of a frame and a conveying frame mounted on the upper surface of the frame, a support frame is fixedly mounted on the outer side of the rotating seat, and a cylinder is fixedly mounted on the upper end of the support frame, and an output end of the cylinder is fixedly connected to a mounting plate, and a cutting assembly is fixedly mounted on the outer side of the mounting plate;

[0007] It also includes: two first rotating shafts, which are elastically rotatably mounted on both sides of the conveying frame on the left side, and the outer sides of the first rotating shafts are respectively fixedly mounted with conveying components and clamping members, and a transmission component is connected between the upper part of one of the first rotating shafts and the mounting plate, and the mounting plate drives the first rotating shaft to rotate through the transmission component;

[0008] A support table is installed above the rotating seat, a cutting slit is provided on the support table, and a shielding member is provided at the lower end of the support table, and the lower end of the shielding member is attached to the upper surface of the rotating seat to prevent cutting waste from entering the gap between the rotating seat and the support table, and a central shaft is fixedly connected to the lower end of the support table, a guide groove is provided on the outer wall of the central shaft, and a ball is provided inside the guide groove, and the ball is embedded in the inner wall of the central slot of the rotating seat;

[0009] The elastic telescopic rod is fixedly mounted on the lower surface of the mounting plate;

[0010] The cone block is telescopically mounted on the outer side of the lower end of the support frame, and a resistance block is fitted on the outer side of the cone block, and the resistance block is fixedly mounted on the outer side of the support platform.

[0011] Preferably, the upper end of the conveying roller on the support frame is flush with the upper surface of the support platform, and the support platform is rotated and adjusted synchronously with the rotating seat, and the cutting seam opened on the support platform corresponds to the position of the metal profile of the door and window in the upper and lower parts.

[0012] By adopting the above technical solution, the rotating seat can drive the support table to rotate synchronously under the drive of the motor, thereby changing the angle between the cutting component and the door and window metal profile to meet the processing requirements of different cutting angles of the door and window metal profile.

[0013] Preferably, the transmission assembly includes a connecting piece rotatably mounted on the lower surface of the mounting plate, and the connecting piece and the rotating seat are coaxially arranged, and the lower end of the connecting piece is fixedly connected to a traction rope, and the lower end of the traction rope is wrapped around the outer side of the upper end of one of the first rotating shafts, and a transmission rope is wrapped around the lower ends of the two first rotating shafts, and the two first rotating shafts rotate synchronously in opposite directions.

[0014] By adopting the above technical solution, when the mounting plate is moved upward under the drive of the cylinder, the mounting plate can pull the first rotating shaft through the connecting member and the traction rope to elastically rotate.

[0015] Preferably, the conveying assembly includes a fixed cylinder fixedly installed on the outside of the first rotating shaft, and the inner side of the fixed cylinder is elastically telescopically connected to a plurality of telescopic cylinders through a reset spring, and the farthest end of the telescopic cylinder is rotatably installed with a second rotating shaft, and rollers are fixedly installed at both ends of the second rotating shaft, and the outer wall of the roller is set to a rough structure.

[0016] By adopting the above technical solution, when the first rotating shaft rotates, it can drive the conveying assembly to rotate synchronously, so that the telescopic cylinder can elastically expand and contract with the fixed cylinder under the resistance of the metal profile of the door and window.

[0017] Preferably, the middle outer wall of the second rotating shaft is evenly provided with slots, and the inner wall of the end shaft hole of the outermost telescopic cylinder is evenly installed with latch teeth, and the latch teeth and the slots form a latching structure, and at the same time, the telescopic cylinder and the second rotating shaft form a ratchet structure through the latch teeth and the slots, and the initial position of the roller does not fit the metal profile of the door and window.

[0018] By adopting the above technical solution, when the first rotating shaft drives the conveying component to rotate, the roller will fit against the outer wall of the door and window metal profile, thereby realizing the fixed-distance conveying of the door and window metal profile. When the first rotating shaft drives the conveying component to reset and rotate, the roller will fit against the outer side of the door and window metal profile and roll, avoiding the door and window metal profile from moving back.

[0019] Preferably, an airbag is connected between the fixed tube and the farthest telescopic tube, and a cavity is opened on the inner side of the clamp, and air holes connected to the cavity are evenly opened on the clamp. At the same time, the airbag and the cavity are connected through an air pipe, and the air holes on the clamp face the upper surface of the support platform.

[0020] By adopting the above technical solution, when the fixed tube and the telescopic tube are elastically extended and retracted, the airbag can be squeezed and stretched, so that the airbag can inhale and exhaust air through the air holes, thereby blowing off the waste chips generated by cutting on the support table.

[0021] Preferably, the clamping member automatically clamps the side wall of the door and window metal profile during the elastic rotation of the first rotating shaft, and an anti-slip pad is provided at one end of the clamping member that is in contact with the door and window metal profile.

[0022] By adopting the above technical solution, when the cutting assembly moves downward, the first rotating shaft will rotate elastically, thereby driving the clamping member to rotate synchronously, so that the end of the clamping member can fit the outside of the door and window metal profile, thereby realizing automatic clamping and fixing of the door and window metal profile.

[0023] Preferably, an elastic telescopic structure is formed between the upper and lower parts of the elastic telescopic rod through a spring, and the lower end of the elastic telescopic rod is fitted to the inclined surface of one side of the cone block, and the cone block forms an elastic telescopic structure through the spring and the support frame, and the inclined surface on the other side of the cone block is fitted to the resistance block.

[0024] By adopting the above technical solution, during the cutting process, when the mounting plate moves downward, it can drive the elastic telescopic rod to fit the inclined surface of the cone block, thereby pushing the cone block to move closer to the support platform, so that the cone block pushes the resistance block to move upward, thereby driving the support platform to move up to support the metal profiles of doors and windows.

[0025] Preferably, the shielding member elastically expands and contracts with the lifting and lowering of the support platform, and the central axis and rotating seat arranged at the lower end of the support platform constitute a lifting structure, and a spring is connected between the lower end of the central axis and the central axis hole of the rotating seat. At the same time, during the lifting and lowering of the central axis, the ball slides along the guide groove to drive the central axis and the support platform to rotate.

[0026] By adopting the above technical solution, when the support table is moved up and reset under the push of the cone block, the support table can be elastically rotated under the drive of the central axis, thereby ensuring that the support table can use centrifugal force to throw away the waste chips on its upper surface and in the cutting seam, avoiding affecting the subsequent placement and transportation of metal profiles for doors and windows, thereby ensuring cutting accuracy.

[0027] Compared with the prior art, the beneficial effects of the present invention are: the automatic clamping and fixing metal door and window cutting machine can automatically convey and position the metal profile, ensure the cutting accuracy, and can automatically sweep and clean the waste generated during the cutting process, the specific contents are as follows;

[0028] 1. A fixed cylinder, a clamping piece and a telescopic cylinder are provided. As the cutting assembly moves upward, the mounting plate can pull the traction rope through the connecting piece, and then the first rotating shaft can be pulled to rotate, so that the fixed cylinder and the telescopic cylinder can be elastically extended and retracted during the rotation process, and then the metal profiles of doors and windows are driven to be transported at a fixed distance through the roller. When the cutting assembly moves downward for cutting, the first rotating shaft will reset and rotate, prompting the clamping piece to fit and clamp the outside of the profile, so as to realize automatic clamping and fixing of the profile and improve the subsequent cutting accuracy;

[0029] 2. An air bag and an air hole are provided. When the fixed tube and the telescopic tube are extended and adjusted, the two can compress and stretch the air bag synchronously, so that the air bag can inhale and exhaust air through the air hole. When the clamping part rotates, air can be automatically blown to the surface of the support table through the air hole to achieve auxiliary cleaning;

[0030] 3. An elastic telescopic rod, a cone block and a central axis are provided. When the cutting component moves downward for cutting, the mounting plate will drive the elastic telescopic rod to move downward synchronously, so that the elastic telescopic rod can push the cone block to slide elastically, and then push the support table to move upward elastically through the resistance block to support the profile. When the mounting plate continues to move downward, the elastic telescopic rod can be elastically extended and retracted. When the cutting component moves upward after cutting, the support table can be moved downward and reset. During the lifting and lowering adjustment process of the support table, the support table will rotate synchronously under the drive of the central axis, so that the waste chips falling on its outside can be cleaned up by the centrifugal force. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0032] Figure 2It is a rear view structural schematic diagram of the present invention;

[0033] Figure 3 This is a schematic diagram of the installation structure of the rotating seat and the supporting platform of the present invention;

[0034] Figure 4 This is a schematic diagram of the installation structure of the fixing tube and the clamping member of the present invention;

[0035] Figure 5 This is a schematic diagram of the conveying frame of the present invention when viewed from above;

[0036] Figure 6 It is a schematic diagram of the cross-sectional structure of the telescopic tube of the present invention;

[0037] Figure 7 For the present invention Figure 7 The enlarged structural diagram at A in the middle;

[0038] Figure 8 This is a schematic diagram of the cone block installation structure of the present invention;

[0039] Fig. 9 It is a schematic diagram of the cross-sectional structure of the rotating seat and the supporting platform of the present invention.

[0040] In the figure: 1. rotating seat; 2. conveying frame; 3. supporting frame; 4. cylinder; 5. mounting plate; 6. cutting assembly; 7. first rotating shaft; 701. transmission rope; 8. fixing cylinder; 9. clamping member; 10. telescopic cylinder; 1001. latching tooth; 11. second rotating shaft; 1101. latching groove; 12. roller; 13. reset spring; 14. air bag; 15. air pipe; 16. air hole; 17. traction rope; 18. connecting member; 19. supporting platform; 20. elastic telescopic rod; 21. cone block; 22. resistance block; 23. shielding member; 24. central axis; 25. guide groove; 26. ball bearing. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example 1: Please refer to Figure 1-Figure 7 As shown, the existing metal door and window cutting machine is inconvenient to automatically convey and limit the metal profiles of doors and windows during use, which makes the cutting accuracy prone to errors. In order to solve this technical problem, this embodiment discloses the following technical content;

[0043] An automatic clamping and fixing metal door and window cutting machine comprises a rotating seat 1 rotatably mounted on the upper surface of a frame and a conveying frame 2 mounted on the upper surface of the frame, a supporting frame 3 is fixedly mounted on the outer side of the rotating seat 1, and a cylinder 4 is fixedly mounted on the upper end of the supporting frame 3, and a mounting plate 5 is fixedly connected to the output end of the cylinder 4, and a cutting assembly 6 is fixedly mounted on the outer side of the mounting plate 5;

[0044] It also includes: two first rotating shafts 7, which are elastically rotatably mounted on both sides of the conveying frame 2 on the left side, and the outer sides of the first rotating shafts 7 are respectively fixedly mounted with conveying components and clamping members 9, and a transmission component is connected between the upper part of one of the first rotating shafts 7 and the mounting plate 5, and the mounting plate 5 drives the first rotating shaft 7 to rotate through the transmission component;

[0045] The upper end of the conveying roller on the support frame 3 is flush with the upper surface of the support platform 19, and the support platform 19 is synchronously rotated and adjusted with the rotating seat 1, and the cutting seam opened on the support platform 19 corresponds to the position of the metal profile of the door and window.

[0046] The transmission assembly includes a connecting member 18 rotatably mounted on the lower surface of the mounting plate 5, and the connecting member 18 and the rotating seat 1 are coaxially arranged, and the lower end of the connecting member 18 is fixedly connected to a traction rope 17, and the lower end of the traction rope 17 is wound around the outer side of the upper end of one of the first rotating shafts 7, and the lower ends of the two first rotating shafts 7 are both wound with a transmission rope 701, and the two first rotating shafts 7 rotate synchronously in opposite directions.

[0047] The conveying assembly includes a fixed cylinder 8 fixedly installed on the outside of the first rotating shaft 7, and the inner side of the fixed cylinder 8 is elastically telescopically connected to a multi-section telescopic cylinder 10 through a reset spring 13, and the end of the farthest telescopic cylinder 10 is rotatably installed with a second rotating shaft 11, and rollers 12 are fixedly installed at both ends of the second rotating shaft 11, and the outer wall of the roller 12 is set to a rough structure.

[0048] The middle outer wall of the second rotating shaft 11 is evenly provided with slots 1101, and the inner wall of the end shaft hole of the outermost telescopic cylinder 10 is evenly installed with latch teeth 1001, and the latch teeth 1001 and the slots 1101 form a latching structure. At the same time, the telescopic cylinder 10 and the second rotating shaft 11 form a ratchet structure through the latch teeth 1001 and the slots 1101, and the initial position of the roller 12 does not fit the metal profile of the door and window.

[0049] By adopting the above technical solution, the door and window metal profile to be cut is placed on the output roller on the conveyor frame 2, and then the rotating seat 1 is rotated according to the cutting angle, and then the cylinder 4 is controlled to drive the mounting plate 5 and the cutting assembly 6 to move downward. As the cutting assembly 6 moves downward, the first rotating shaft 7 will rotate elastically, so that the clamping member 9 on the outside thereof can be rotated to fit the outside of the door and window metal profile, so as to realize automatic clamping and fixing of the profile, so as to improve the subsequent cutting stability. When the cutting is completed, the cutting assembly 6 is controlled to move upward. At this time, the mounting plate 5 will pull the traction rope 17 through the connecting member 18, so that the lower end of the traction rope 17 pulls the first rotating shaft 7 is elastically rotated, at this time the fixed cylinder 8 will drive the telescopic cylinder 10 to rotate synchronously, at this time the roller 12 at the end of the telescopic cylinder 10 will fit the side wall of the profile, and at this time the latching tooth 1001 is latched in the latching groove 1101 to prevent the roller 12 from rotating, with the rotation of the fixed cylinder 8, the fixed cylinder 8 and the telescopic cylinder 10 will be elastically retracted, at this time the roller 12 can drive the profile to be automatically transported along the surface of the conveying frame 2 at a fixed distance, and when the fixed cylinder 8 is reset and rotated, the telescopic cylinder 10 will gradually extend, at this time the roller 12 will roll along the side wall of the profile to avoid driving the profile to move back, thereby realizing automatic distance conveying and positioning of the profile, and ensuring the subsequent cutting stability.

[0050] Embodiment 2: The technical content disclosed in this embodiment is a further improvement on the above embodiment 1. The existing metal door and window cutting machine is inconvenient to clean the waste generated during the cutting process, which causes the waste to accumulate easily and affect the placement and positioning of subsequent profiles. In order to further solve this technical problem, this embodiment discloses the following technical content, such as Figure 3-Figure 6 as well as Figure 8-Figure 9 As shown;

[0051] The support platform 19 is installed above the rotating seat 1. A cutting slit is provided on the support platform 19, and a shielding member 23 is provided at the lower end of the support platform 19, and the lower end of the shielding member 23 is attached to the upper surface of the rotating seat 1 to prevent cutting waste from entering the gap between the rotating seat 1 and the support platform 19. At the same time, a central shaft 24 is fixedly connected to the lower end of the support platform 19, and a guide groove 25 is provided on the outer wall of the central shaft 24, and a ball 26 is provided inside the guide groove 25, and the ball 26 is embedded and installed on the inner wall of the central tank body of the rotating seat 1;

[0052] The elastic telescopic rod 20 is fixedly mounted on the lower surface of the mounting plate 5;

[0053] The cone block 21 is telescopically mounted on the outer side of the lower end of the support frame 3 . A resisting block 22 is fitted on the outer side of the cone block 21 , and the resisting block 22 is fixedly mounted on the outer side of the support platform 19 .

[0054] An airbag 14 is connected between the fixed tube 8 and the farthest telescopic tube 10, and a cavity is opened on the inner side of the clamp 9, and air holes 16 connected to the cavity are evenly opened on the clamp 9. At the same time, the airbag 14 and the cavity are connected through an air pipe 15, and the air holes 16 on the clamp 9 face the upper surface of the support platform 19.

[0055] The clamping member 9 automatically clamps the side wall of the door and window metal profile during the elastic rotation of the first rotating shaft 7, and an anti-slip pad is provided at one end of the clamping member 9 that is in contact with the door and window metal profile.

[0056] An elastic telescopic structure is formed between the upper and lower parts of the elastic telescopic rod 20 through a spring, and the lower end of the elastic telescopic rod 20 is fitted to the inclined surface of one side of the cone block 21, and the cone block 21 forms an elastic telescopic structure through the spring and the support frame 3, and the inclined surface on the other side of the cone block 21 is fitted to the resistance block 22.

[0057] The shielding member 23 elastically expands and contracts with the lifting and lowering of the support platform 19, and the central axis 24 arranged at the lower end of the support platform 19 and the rotating seat 1 constitute a lifting structure, and a spring is connected between the lower end of the central axis 24 and the central axis hole of the rotating seat 1. At the same time, during the lifting and lowering of the central axis 24, the ball 26 slides along the guide groove 25 to drive the central axis 24 and the support platform 19 to rotate.

[0058] By adopting the above technical solution, as the first rotating shaft 7 rotates, the fixed cylinder 8 and the telescopic cylinder 10 will elastically expand and contract. During the elastic expansion and contraction process of the fixed cylinder 8 and the telescopic cylinder 10, the two will squeeze and stretch the airbag 14, so that the airbag 14 will inhale and exhaust air through the air pipe 15 and the air hole 16. During the exhaust process, the clamping member 9 will rotate, so that the air hole 16 can evenly blow air to the surface of the support platform 19, thereby achieving preliminary cleaning of the waste chips on the surface of the support platform 19. When the cutting assembly 6 moves downward for cutting, the elastic telescopic rod 20 under the mounting plate 5 will resist and push the cone block 21 to move elastically at the lower end of the support frame 3. At this time, the inclined surface of the cone block 21 will contact The resistance block 22 is pushed upward, thereby driving the support platform 19 to move upward synchronously and support the profile. At this time, the lower end of the elastic telescopic rod 20 will resist the end of the cone block 21 to prevent its movement and cause unstable support of the support platform 19. As the mounting plate 5 continues to move downward, the elastic telescopic rod 20 can elastically contract. When the cutting is completed, when the mounting plate 5 and the cutting assembly 6 are controlled to move upward, the elastic telescopic rod 20 will move upward at the same time, so that the support platform 19 and the center axis 24 move downward under the action of the spring force. At this time, the ball 26 will slide along the guide groove 25, so that the support platform 19 will rotate synchronously during the downward movement, and then the centrifugal force can be used to throw off and clean the waste chips remaining on it.

[0059] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic clamping and fixing metal door and window cutting machine, comprising a rotating seat (1) rotatably mounted on the upper surface of a frame and a conveying frame (2) mounted on the upper surface of the frame, a support frame (3) being fixedly mounted on the outer side of the rotating seat (1), a cylinder (4) being fixedly mounted on the upper end of the support frame (3), and a mounting plate (5) being fixedly connected to the output end of the cylinder (4), and a cutting assembly (6) being fixedly mounted on the outer side of the mounting plate (5); It is characterized in that Also includes: Two first rotating shafts (7) are elastically rotatably mounted on both sides of the conveying frame (2) on the left side, and a conveying assembly and a clamping member (9) are respectively fixedly mounted on the outer sides of the first rotating shafts (7), and a transmission assembly is connected between the upper part of one of the first rotating shafts (7) and the mounting plate (5), and the mounting plate (5) drives the first rotating shaft (7) to rotate through the transmission assembly; A support platform (19) is installed above the rotating seat (1), a cutting slit is provided on the support platform (19), and a shielding member (23) is provided at the lower end of the support platform (19), and the lower end of the shielding member (23) is attached to the upper surface of the rotating seat (1) to prevent cutting waste from entering the gap between the rotating seat (1) and the support platform (19), and at the same time, a central shaft (24) is fixedly connected to the lower end of the support platform (19), a guide groove (25) is provided on the outer wall of the central shaft (24), and a ball (26) is provided inside the guide groove (25), and the ball (26) is embedded in the inner wall of the central groove body of the rotating seat (1); An elastic telescopic rod (20) is fixedly mounted on the lower surface of the mounting plate (5); The cone block (21) is telescopically mounted on the outer side of the lower end of the support frame (3); a resistance block (22) is fitted on the outer side of the cone block (21), and the resistance block (22) is fixedly mounted on the outer side of the support platform (19).

2. The automatic clamping and fixing metal door and window cutting machine according to claim 1 is characterized in that: The upper end of the conveying roller on the support frame (3) is flush with the upper surface of the support platform (19), and the support platform (19) is synchronously rotated and adjusted with the rotating seat (1), and the cutting seam opened on the support platform (19) corresponds to the position of the metal profile of the door and window in the upper and lower parts.

3. The automatic clamping and fixing metal door and window cutting machine according to claim 1 is characterized in that: The transmission assembly comprises a connecting member (18) rotatably mounted on the lower surface of the mounting plate (5), the connecting member (18) and the rotating seat (1) are coaxially arranged, and the lower end of the connecting member (18) is fixedly connected to a traction rope (17), while the lower end of the traction rope (17) is wound around the outer side of the upper end of one of the first rotating shafts (7), and a transmission rope (701) is wound around the lower ends of the two first rotating shafts (7), and the two first rotating shafts (7) rotate synchronously in opposite directions.

4. The automatic clamping and fixing metal door and window cutting machine according to claim 3 is characterized in that: The conveying assembly comprises a fixed cylinder (8) fixedly mounted on the outside of a first rotating shaft (7), and the inner side of the fixed cylinder (8) is elastically and telescopically connected to a plurality of telescopic cylinders (10) via a return spring (13), and the end of the telescopic cylinder (10) at the farthest end is rotatably mounted with a second rotating shaft (11), and rollers (12) are fixedly mounted at both ends of the second rotating shaft (11), and the outer wall of the roller (12) is arranged to have a rough structure.

5. The automatic clamping and fixing metal door and window cutting machine according to claim 4, characterized in that: The middle outer wall of the second rotating shaft (11) is evenly provided with latching grooves (1101), and the inner wall of the end shaft hole of the outermost telescopic cylinder (10) is evenly provided with latching teeth (1001), and the latching teeth (1001) and the latching grooves (1101) form a latching structure, and the telescopic cylinder (10) and the second rotating shaft (11) form a ratchet structure through the latching teeth (1001) and the latching grooves (1101), and the roller (12) does not fit the metal profile of the door and window at an initial position.

6. The automatic clamping and fixing metal door and window cutting machine according to claim 4, characterized in that: An air bag (14) is connected between the fixed tube (8) and the telescopic tube (10) at the farthest end, a cavity is provided on the inner side of the clamping member (9), and air holes (16) communicating with the cavity are evenly provided on the clamping member (9), the air bag (14) and the cavity are connected via an air pipe (15), and the air holes (16) on the clamping member (9) face the upper surface of the support platform (19).

7. The automatic clamping and fixing metal door and window cutting machine according to claim 1, characterized in that: The clamping member (9) automatically clamps the side wall of the door and window metal profile during the elastic rotation of the first rotating shaft (7), and an anti-slip pad is provided at one end of the clamping member (9) that is in contact with the door and window metal profile.

8. The automatic clamping and fixing metal door and window cutting machine according to claim 1, characterized in that: The elastic telescopic structure is formed between the upper and lower parts of the elastic telescopic rod (20) by means of a spring, and the lower end of the elastic telescopic rod (20) is fitted to an inclined surface on one side of the cone block (21), and the cone block (21) forms an elastic telescopic structure by means of a spring and a support frame (3), and the inclined surface on the other side of the cone block (21) is fitted to the abutment block (22).

9. The automatic clamping and fixing metal door and window cutting machine according to claim 1, characterized in that: The shielding member (23) elastically expands and contracts as the support platform (19) rises and falls, and a central axis (24) and a rotating seat (1) arranged at the lower end of the support platform (19) form a lifting structure, and a spring is connected between the lower end of the central axis (24) and the central axis hole of the rotating seat (1), and during the lifting and lowering process of the central axis (24), the ball (26) slides along the guide groove (25) to drive the central axis (24) and the support platform (19) to rotate.

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