A kind of automatic double traction machine for aluminum profiles

Abstract

The present invention provides an automatic double traction machine for aluminum profiles, comprising a loading rack, a unloading rack, a cutting mechanism, a first traction mechanism and a second traction mechanism; the cutting mechanism is installed between the loading rack and the unloading rack; the first traction vehicle and the second traction vehicle can alternately pull the aluminum profiles, and the first traction vehicle can pass under the second traction vehicle; the first traction vehicle and the second traction vehicle both comprise a support seat, a sleeve, a rotating shaft, a cantilever, a rotating arm, a movable clamp and a fixed clamp; the support seat is slidably installed on a guide rail, the sleeve is fixedly connected to the support seat, the rotating shaft is inserted into the sleeve, a horizontal cantilever is fixed on the top of the rotating shaft, and the free end of the cantilever can be rotated to the top of the aluminum profile; the rotating arm is horizontally inserted into the cantilever, a limit rod extending upward is fixed on the top of the rotating arm, and a pressure plate can press the limit rod to rotate the rotating arm; the free end of the rotating arm is connected to the movable clamp through an iron chain, and the movable clamp can be driven to clamp the aluminum profile when the rotating arm rotates.

Description

Technical Field

[0001] The invention belongs to the technical field of traction machines, and in particular relates to an automatic double traction machine for aluminum profiles. Background Art

[0002] After the aluminum profile is output from the forming equipment, it needs to be cut into sections according to specific length specifications. This process is usually completed on a tractor. The tractor drags the front end of the aluminum profile, moves it to the cutting equipment to cut it off, and then continues to drag the aluminum profile forward for a distance, and then unloads the cut aluminum profile from the tractor.

[0003] Due to the long length of aluminum profiles, the traction distance is also long, and the traction efficiency is low. In order to improve the traction efficiency of aluminum profiles, some manufacturers have developed double traction machines to alternately traction aluminum profiles. The existing double traction machines are equipped with two tractors, resulting in a bloated equipment structure and a large occupation of plant space. The clamping piece on the tractor to achieve the clamping function of the aluminum profile is driven by a cylinder or a motor, which increases the equipment cost and operating energy consumption of the drive device, resulting in higher production costs for enterprises. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic double traction machine for aluminum profiles to solve the problems of the existing double traction machines being bulky in structure, occupying a large space and having high equipment cost.

[0005] The present invention provides the following technical solutions:

[0006] An automatic double traction machine for aluminum profiles, comprising a profile support frame, a cutting mechanism, a first traction mechanism and a second traction mechanism;

[0007] The profile support frame is used to support the aluminum profile to be cut, and the profile support frame includes a loading rack and a unloading rack arranged in the left and right directions;

[0008] The cutting mechanism is installed between the loading rack and the unloading rack, and comprises a lifting cylinder, a rotating motor and a blade disc, wherein the rotating motor is installed on the lifting cylinder, and the blade disc is installed on the output shaft of the rotating motor. The blade disc is located directly below the aluminum profile, and the lifting cylinder can lift the blade disc to cut the aluminum profile;

[0009] The first traction mechanism comprises a first guide rail, a first driving device and a first tractor, wherein the first guide rail is parallel to the profile support frame, the first tractor is mounted on the first guide rail, the first driving device is connected to the first tractor, and the first driving device can drive the first tractor to reciprocate along the first guide rail;

[0010] The second traction mechanism includes a second guide rail, a second driving device and a second tractor, the second guide rail is also parallel to the profile support frame, and the second guide rail is located at the rear side of the first guide rail, the second tractor is installed on the second guide rail, the second driving device is connected to the second tractor, and the second driving device can drive the second tractor to reciprocate along the second guide rail;

[0011] The first tractor and the second tractor can alternately tow the aluminum profile, and the first tractor can pass under the second tractor; the first tractor and the second tractor both include a support seat, a sleeve, a rotating shaft, a cantilever, a rotating arm, a movable clamp and a fixed clamp; the support seat is slidably mounted on the first guide rail or the second guide rail, the sleeve is vertically fixedly connected to the support seat, the rotating shaft is inserted into the sleeve, the top of the rotating shaft is fixedly connected to a horizontal cantilever, the cantilever can rotate relative to the sleeve together with the rotating shaft, and the free end of the cantilever can rotate to the top of the aluminum profile; the cantilever is a hollow tubular structure, and the inner portion of the cantilever is fixedly connected to the horizontal cantilever. Insert the swivel arm, and the swivel arm can rotate around the central axis of the cantilever; a limit rod extending upward is fixed to the top of the swivel arm, first pressure plates are installed at both left and right ends of the first guide rail, and second pressure plates are installed at both left and right ends of the second guide rail, the height of the first pressure plate is lower than the height of the second pressure plate, the first pressure plate and the second pressure plate can respectively press the limit rod of the first tractor and the limit rod of the second tractor to rotate the swivel arm; the free end of the swivel arm is connected to the movable clamp by an iron chain, and the fixed clamp is located directly below the movable clamp and is fixedly connected to the cantilever, and when the swivel arm rotates, the movable clamp can be driven to clamp or release the aluminum profile.

[0012] Preferably, two bearing frames are fixed at intervals on the free end of the cantilever, a clip shaft is horizontally fixed on the two bearing frames, the movable clip is sleeved on the clip shaft, and the movable clip can rotate around the clip shaft; the fixed clip is fixedly connected to one of the bearing frames.

[0013] Preferably, the cross section of the movable clamp is a concave arc structure, the free end of the movable clamp can press the aluminum profile downward, and a plurality of anti-slip serrations are provided on the bottom surface of the movable clamp; the fixed clamp is a flat plate structure.

[0014] Preferably, the top of the limiting rod is inclined toward the free end of the rotating arm, and when the cantilever is retracted to a direction parallel to the first guide rail, the limiting rod can abut against the front side wall of the first pressure plate or the second pressure plate on the left side.

[0015] Preferably, a horizontal connecting rod is fixedly connected to the bottom of the rotating shaft, and a reversing rod is hinged at the other end of the connecting rod. A chain is connected to both ends of the reversing rod, and the chain is installed on a sprocket. The sprocket is driven by the first drive device or the second drive device to run forward or reverse.

[0016] Preferably, an angle limit block is fixed on the upper surface of the reversing rod, the angle limit block is bent at a right angle, the hinge point between the connecting rod and the reversing rod is located at the bending point of the angle limit block, and the angle limit block can limit the rotation angle of the connecting rod.

[0017] Preferably, a guide wheel is installed on the support seat, and the guide wheel is provided with a guide groove matching the first guide rail or the second guide rail, and the guide wheel can roll along the first guide rail or the second guide rail.

[0018] Preferably, a cantilever limiting column is installed on the top surface of the support seat, and the cantilever limiting column is located on the left side of the cantilever, and the cantilever limiting column can support the cantilever.

[0019] Preferably, the cantilever is a cylindrical tube structure, and an arc-shaped limiting wall is provided on the right side of the cantilever limiting column.

[0020] The beneficial effects of the present invention are:

[0021] 1. The present invention installs the first traction mechanism and the second traction mechanism in parallel, and the two traction mechanisms can alternately pull the aluminum profiles, thereby speeding up the production cycle and improving the production efficiency.

[0022] 2. The cantilevers of the first tractor and the second tractor can be opened or closed, which saves the space occupied by the equipment and makes the structure of the whole equipment more compact. Moreover, the movement between them does not interfere with each other, which ensures the stability of the tractor operation.

[0023] 3. Through the specific structure among the cantilever, the rotating arm, the sleeve, the rotating shaft and the first pressing plate / the second pressing plate, the movable clamp can automatically clamp or release the aluminum profile, without the need to configure a driving device to drive the movable clamp to move, thus saving equipment cost and operation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the top view of the structure of the present invention;

[0026] Figure 2 It is a schematic diagram of a top view of the structure when the first tractor and the second tractor are about to meet each other;

[0027] Figure 3 It is a structural schematic diagram of the cutting mechanism of the present invention;

[0028] Figure 4 is a schematic structural diagram of the first tractor of the present invention when the cantilever of the first tractor is parallel to the first guide rail;

[0029] Figure 5 is a cross-sectional schematic diagram of a first tractor of the present invention when the cantilever is perpendicular to the first guide rail;

[0030] Figure 6 It is a schematic diagram of the matching structure between the guide wheel and the first guide rail of the first tractor of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure when the rotating arm of the present invention drives the movable clamp to open;

[0032] Figure 8 It is a schematic diagram of the rotating arm structure of the present invention;

[0033] Fig. 9 It is a schematic diagram of the structure of the movable clamp of the present invention when it is opened;

[0034] Fig.10 It is a schematic diagram of the structure of the movable clamp of the present invention clamping the aluminum profile;

[0035] Fig.11 is a schematic diagram of a top view of the structure when the cantilever of the present invention is perpendicular to the first guide rail;

[0036] Fig.12 is a schematic diagram of a top view of the structure when the cantilever of the present invention is parallel to the first guide rail;

[0037] The markings in the figure are: 1. Aluminum profile; 2. Loading rack; 3. Unloading rack; 4. Roller; 5. Temporary storage rack; 6. Cutting platform; 7. Lifting cylinder; 8. Rotating motor; 9. Blade plate; 10. Blade hole; 11. Cutting rack; 12. Follow-up motor; 13. Follow-up chain; 14. First guide rail; 15. First tractor; 16. First drive device; 17. Second guide rail; 18. Second tractor; 19. Support seat; 20. . Guide wheel; 21. Sleeve; 22. Rotating shaft; 23. Cantilever; 24. Rotating arm; 25. Moving clip; 26. Fixed clip; 27. Limit end; 28. Limit rod; 29. ​​First pressure plate; 30. Second pressure plate; 31. Iron chain; 32. Counterweight; 33. Bearing frame; 34. Clip shaft; 35. Connecting rod; 36. Reversing rod; 37. Chain; 38. Angle limit block; 39. Cantilever limit column; 40. Arc limit wall. DETAILED DESCRIPTION

[0038] like Figure 1 and Figure 2As shown, an automatic double traction machine for aluminum profiles includes a profile support frame, a cutting mechanism, a first traction mechanism and a second traction mechanism.

[0039] The profile support frame is used to support the aluminum profile 1 to be cut. The profile support frame includes a loading rack 2 and a lowering rack 3 arranged in the same straight line from left to right. A plurality of rollers 4 are installed in parallel on the loading rack 2 and the lowering rack 3. The aluminum profile 1 can move on the rollers 4. The aluminum profile 1 can be dragged from the loading rack 2 to the lowering rack 3 by the first traction mechanism or the first traction mechanism. A temporary storage rack 5 is arranged in front of the lowering rack 3. The aluminum profile cut on the lowering rack 3 is temporarily stored on the temporary storage rack 5 after being unloaded.

[0040] like Figures 1 to 3 As shown, the cutting mechanism is installed between the loading rack 2 and the unloading rack 3, and the cutting mechanism includes a cutting platform 6, a lifting cylinder 7, a rotating motor 8 and a blade disc 9. The cutting platform 6 and the loading rack 2 are located on the same horizontal plane, and the first traction mechanism or the second traction mechanism can pull the entire aluminum profile 1 to the cutting platform 6 to cut it into aluminum profile segments of the same length. The lifting cylinder 7 is installed at the bottom of the cutting platform 6, the rotating motor 8 is installed on the piston column of the lifting cylinder 7, the blade disc 9 is installed on the output shaft of the rotating motor 8, and the blade disc 9 is located directly below the aluminum profile 1. The cutting platform 6 is provided with a blade hole 10 for the blade disc 9 to extend out, and the lifting cylinder 7 can lift the blade disc 9 out of the blade hole 10, and the rotating motor 8 drives the blade disc 9 to rotate at high speed to cut the aluminum profile 1. In order to improve the segmentation accuracy of the aluminum profile 1, the cutting platform 6 is movably placed on a cutting rack 11, and a follower motor 12, a follower sprocket and a follower chain 13 are installed on the side of the cutting rack 11. The cutting platform 6 is fixedly connected to the follower chain 13. The follower motor 12 can drive the cutting platform 6 to follow the first traction mechanism or the second traction mechanism to move a distance and then cut the aluminum profile.

[0041] like Figure 1 and Figure 2 As shown, the first traction mechanism includes a first guide rail 14, a first driving device 16 and a first tractor 15. The first guide rail 14 is parallel to the profile frame. The first tractor 15 is installed on the first guide rail 14. The first driving device 16 is connected to the first tractor 15 and drives the first tractor 15 to move back and forth along the first guide rail 14. The second traction mechanism includes a second guide rail 17, a second driving device and a second tractor 18. The second guide rail 17 is also parallel to the profile frame and is located at the rear side of the first guide rail 14. The second tractor 18 is installed on the second guide rail 17. The second driving device is connected to the second tractor 18 and drives the second tractor 18 to move back and forth along the second guide rail 17.

[0042] The first tractor 15 and the second tractor 18 can alternately tow the aluminum profile 1 to improve the cutting and towing efficiency of the aluminum profile 1; and the first tractor 15 can pass under the second tractor 18 so that the movements of the two tractors do not interfere with each other.

[0043] like Figure 4 and Figure 5 As shown, the first tractor 15 and the second tractor 18 both include a support seat 19, a guide wheel 20, a sleeve 21, a rotating shaft 22, a cantilever 23, a rotating arm 24, a movable clamp 25 and a fixed clamp 26. The support seat 19 is slidably mounted on the first guide rail 14 or the second guide rail 17, and its specific structure is as follows: Figure 6 As shown, a guide wheel 20 is installed on the support seat 19. The guide wheel 20 is provided with a guide groove matching the first guide rail 14 or the second guide rail 17. The first guide rail 14 or the second guide rail 17 is embedded in the guide groove, so that the guide wheel 20 rolls along the first guide rail 14 or the second guide rail 17, thereby driving the support seat 19 to move together.

[0044] like Figure 4 and Figure 5 As shown, the sleeve 21 is vertically welded to the support seat 19, the shaft 22 is inserted into the sleeve 21, the top of the shaft 22 is welded with a horizontal cantilever 23, and the connection between the shaft 22 and the cantilever 23 is close to the root of the cantilever 23. The cantilever 23 can rotate relative to the sleeve 21 together with the shaft 22. The cantilever 23 can rotate to a direction parallel to the first guide rail 14 or perpendicular to the first guide rail 14. When the cantilever 23 is perpendicular to the first guide rail 14, its free end is just above the aluminum profile 1, which is convenient for the movable clamp 25 to clamp the aluminum profile. The cantilever 23 is a hollow circular tube structure, and the rotating arm 24 is inserted into the cantilever 23. The rotating arm 24 can rotate around the central axis of the cantilever 23; as shown in FIG. Figure 8 As shown, both front and rear ends of the rotating arm 24 extend out of the cantilever 23 and are equipped with a stopper 27 having a diameter larger than that of the cantilever 23 to prevent the rotating arm 24 from falling off the cantilever 23. The stopper 27 can be threaded, interference-fitted or welded to the end of the rotating arm 24. Figure 4 , Figure 7 and Figure 8 As shown, a protruding limiting rod 28 is fixed to the top of one limiting end of the rotating arm 24, and a horizontal first pressing plate 29 is installed at both the left and right ends of the first guide rail 14, and a horizontal second pressing plate 30 is installed at both the left and right ends of the second guide rail 17. The height of the first pressing plate 29 is lower than that of the second pressing plate 30. The first pressing plate 29 and the second pressing plate 30 can respectively press the limiting rod 28 of the first tractor and the limiting rod 28 of the second tractor, so that the limiting rod 28 rotates counterclockwise, thereby driving the rotating arm 24 to rotate together. Figure 7 , Fig. 9 and Fig.10As shown, an iron chain 31 is installed at the free end of the rotating arm 24 (i.e., the other end opposite to the mounting end of the limit rod 28), and the lower end of the iron chain 31 is installed on the movable clamping piece 25. The fixed clamping piece 26 is located directly below the movable clamping piece 25 and is fixedly connected to the cantilever 23. When the rotating arm 24 rotates counterclockwise, the movable clamping piece 25 can be lifted by the iron chain 31 to release the aluminum profile 1; when the rotating arm 24 rotates clockwise to reset, the iron chain 31 releases the movable clamping piece 25, and the movable clamping piece 25 automatically drops under the action of its own gravity, and clamps the aluminum profile 1 together with the fixed clamping piece 26.

[0045] The top of the limit rod 28 is inclined toward the free end of the cantilever 23. When the first tractor 15 or the second tractor 18 moves toward the starting end (i.e., the left side), their cantilever 23 is rotated to a direction parallel to the first guide rail 14, thereby avoiding the problem of mutual interference when the two tractors are driving in opposite directions. Figure 4 As shown, when the first tractor 15 or the second tractor 18 moves to the starting end, the limit rod 28 abuts against the front side wall of the first pressure plate 29 or the second pressure plate 30 at the starting end (i.e., the left side). When the first tractor or the second tractor needs to tow the aluminum profile again, the cantilever 23 is rotated to a direction perpendicular to the first guide rail 14. At this time, since the top of the limit rod 28 is inclined toward the free end of the cantilever 23, the limit rod 28 can smoothly enter under the first pressure plate 29 or the second pressure plate 30, and is pressed down by the first pressure plate 29 or the second pressure plate 30 and rotates, thereby causing the rotating arm 24 to rotate counterclockwise, and the movable clamp 25 opens, waiting for the aluminum profile to enter the fixed clamp and clamp it.

[0046] like Fig. 9 and Fig.10 As shown, in order to enhance the clamping force of the dynamic clamp 25 on the aluminum profile 1, a counterweight block 32 is welded at the bottom of the limit end 27 of the rotating arm 24. The counterweight block 32 can help the rotating arm 24 to quickly reset in the clockwise direction when the limit rod 28 leaves the first pressure plate 29 or the second pressure plate 30, and enable the dynamic clamp 25 to continue to firmly clamp the aluminum profile 1.

[0047] like Figure 4 and Figure 7 As shown, two upright bearing frames 33 are welded at intervals at the free end of the cantilever 23, and the fixed clip 26 is welded to the bottom of one of the bearing frames; a clip shaft 34 is horizontally fixed to the two bearing frames 33, and the root of the movable clip 25 is sleeved on the clip shaft 34, and the movable clip 25 can rotate around the clip shaft 34. The clip shaft 34 is fixed to the two bearing frames 33 at the same time, which improves the support strength of the clip shaft 34 for the movable clip 25 and prevents the clip shaft 34 from shaking or deflecting due to a large pulling force. There is an opening structure between the outer ends of the fixed clip 26 and the movable clip 25, which is convenient for unloading the aluminum profile from the opening structure when the cantilever 23 rotates.

[0048] Specifically, Fig. 9 As shown, the cross section of the movable clamp 25 is a concave arc structure, the free end of the movable clamp 25 can press down the aluminum profile 1, and a plurality of anti-slip serrations are provided on the bottom surface of the movable clamp 25; the fixed clamp 26 is a flat plate structure. The arc structure of the movable clamp 25 cooperates with the flat plate structure of the fixed clamp 26 to clamp the aluminum profile 1 more stably.

[0049] like Fig.11 and Fig.12 As shown, in order to realize the automatic rotation of the cantilever 23, a horizontal connecting rod 35 is welded at the bottom of the rotating shaft 22, and a bar-shaped reversing rod 36 is hinged at the other end of the connecting rod 35. The left and right ends of the reversing rod 36 are respectively connected to the two ends of a chain 37, and the chain 37 is meshed and installed on the driving sprocket and the driven sprocket. The driving sprocket is driven by the first driving device or the second driving device to run forward or reverse, and the first driving device or the second driving device are both servo motors. When the first tractor 14 or the second tractor 18 moves to the rightmost side, it is necessary to make their cantilever 23 parallel to the first guide rail 14 and retract the cantilever to avoid the other tractor coming in the opposite direction. Since the sleeve 21 is fixedly connected to the support seat 19, and the support seat 19 is limited on the first guide rail 14 or the second guide rail 17, the shaft 22 in the sleeve 21 and the welding end of the connecting rod 35 and the shaft 22 will not move forward and backward. At this time, the servo motor drives the chain 37 to reverse the operation, and the chain 37 drives the reversing rod 36 to rotate with it and the connecting rod 35. The rod 35 moves to the left with its hinge point as the center, so that the chain 37 runs idle for a short distance. At this time, the welding end of the connecting rod 35 is relatively fixed (will not move forward and backward), so the displacement of the hinged end of the connecting rod 35 changes the angle between it and the reversing rod 36; since the connecting rod 35 is welded to the bottom of the rotating shaft 22, and the cantilever 23 is welded to the top of the rotating shaft 22, the angle between the cantilever 23 and the reversing rod 36 also changes, so that the direction of the cantilever 23 can be adjusted from perpendicular to the first guide rail 14 to parallel to the first guide rail 14.

[0050] In order to more accurately limit the rotation angle of the cantilever 23, an angle limit block 38 is installed on the upper surface of the reversing rod 36. The angle limit block 38 is bent at a right angle. The angles a and b between the two right-angled sides of the angle limit block 38 and the reversing rod 36 are both +45°. The hinge point of the connecting rod 35 and the reversing rod 36 is located at the bending point of the angle limit block 38. The angle c between the connecting rod 35 and the cantilever 23 projected on the horizontal plane is 135°. The angle limit block 38 can limit the rotation angle of the connecting rod 35 to 90°, thereby accurately controlling the rotation angle of the cantilever 23 each time.

[0051] like Figure 4 and Figure 5As shown, in order to further control the rotation angle of the cantilever 23, a cantilever limiting column 39 is installed on the top surface of the support seat 19. The cantilever limiting column 39 is located on the left side of the cantilever 23. The cantilever limiting column 39 can resist the cantilever 23, thereby further controlling the rotation angle of the cantilever 23 and preventing it from rotating excessively. The cantilever 23 is a cylindrical tube structure, and the right side of the cantilever limiting column 39 is provided with an arc-shaped limiting wall 40 that matches the outer wall of the cantilever 23, so as to better cooperate with the cantilever 23 and not damage the cantilever 23.

[0052] The working process of the tractor is as follows: in the initial state, the cantilever 23 of the first tractor 15 is perpendicular to the first guide rail 14, and the limit rod 28 at the top of its rotating arm 24 is pressed under the first pressure plate 29, so that the movable clamp 25 is opened and waits for the aluminum profile to be fed. When the front end of the entire aluminum profile is fed to the fixed clamp 26 of the first tractor 15, the servo motor of the tractor is started to drive the first tractor 15 to move to the right so that its limit rod 28 is separated from the first pressure plate 29. Under the gravity of the counterweight block 32 and the movable clamp 25, the rotating arm 24 rotates clockwise and resets, so that the movable clamp 25 and the fixed clamp 26 clamp the aluminum profile 1 together. When the front end of the aluminum profile 1 is pulled onto the cutting mechanism, the follower motor 12 is started to drive the cutting platform 6 to move a distance with the first tractor 15 and then cut the aluminum profile. The first tractor 15 continues to pull the cut aluminum profile to the right to the right end of the unloading rack 3. The limit rod 28 rotates counterclockwise under the push of the first pressure plate 29 on the right, so that the movable clamp 25 releases the aluminum profile 1, which is convenient for unloading the aluminum profile 1. The servo motor drives the chain 37 of the first traction mechanism to reverse the operation, so that the cantilever 23 of the first tractor 15 rotates to be parallel to the first guide rail 14 and is in a retracted state. The servo motor continues to drive the first tractor 15 to move to the left. At the same time, the second tractor 18 pulls the formed aluminum profile to the right. Since the cantilever of the first tractor 15 is retracted, there will be no mutual obstruction or collision when they meet.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic double traction machine for aluminum profiles, characterized in that: It includes a profile support frame, a cutting mechanism, a first traction mechanism and a second traction mechanism; The profile support frame is used to support the aluminum profile to be cut, and the profile support frame includes a loading rack and a unloading rack arranged on the same straight line from left to right; a temporary storage rack is arranged in front of the unloading rack; The cutting mechanism is installed between the loading rack and the unloading rack, and comprises a lifting cylinder, a rotating motor and a blade disc, wherein the rotating motor is installed on the lifting cylinder, and the blade disc is installed on the output shaft of the rotating motor. The blade disc is located directly below the aluminum profile, and the lifting cylinder can lift the blade disc to cut the aluminum profile; The first traction mechanism comprises a first guide rail, a first driving device and a first tractor, wherein the first guide rail is parallel to the profile support frame, the first tractor is mounted on the first guide rail, the first driving device is connected to the first tractor, and the first driving device can drive the first tractor to reciprocate along the first guide rail; The second traction mechanism includes a second guide rail, a second driving device and a second tractor, the second guide rail is also parallel to the profile support frame, and the second guide rail is located at the rear side of the first guide rail, the second tractor is installed on the second guide rail, the second driving device is connected to the second tractor, and the second driving device can drive the second tractor to reciprocate along the second guide rail; The first tractor and the second tractor can alternately tow the aluminum profile, and the first tractor can pass under the second tractor; the first tractor and the second tractor both include a support seat, a sleeve, a rotating shaft, a cantilever, a rotating arm, a movable clamp and a fixed clamp; the support seat is slidably mounted on the first guide rail or the second guide rail, the sleeve is vertically fixedly connected to the support seat, the rotating shaft is inserted into the sleeve, the top of the rotating shaft is fixedly connected to a horizontal cantilever, the cantilever can rotate relative to the sleeve together with the rotating shaft, and the free end of the cantilever can rotate to the top of the aluminum profile; the cantilever is a hollow tubular structure, and the cantilever is inserted into the cantilever. The swivel arm is provided with a protruding limit rod, and the left and right ends of the first guide rail are both provided with first pressing plates, and the left and right ends of the second guide rail are both provided with second pressing plates, and the height of the first pressing plate is lower than the height of the second pressing plate, and the first pressing plate and the second pressing plate can respectively press the limit rod of the first tractor and the limit rod of the second tractor to rotate the swivel arm; the free end of the swivel arm is connected to the movable clamping piece by an iron chain, and the fixed clamping piece is located directly below the movable clamping piece and is fixedly connected to the cantilever, and the swivel arm can drive the movable clamping piece to rotate together, thereby pressing or loosening the aluminum profile; A horizontal connecting rod is fixedly connected to the bottom of the rotating shaft, and a reversing rod is hingedly connected to the other end of the connecting rod. Both left and right ends of the reversing rod are connected to a chain, and the chain is installed on a sprocket. The sprocket is driven by the first driving device or the second driving device to run forward or reversely; An angle limit block is fixed on the upper surface of the reversing rod. The angle limit block is bent at a right angle. The hinge point between the connecting rod and the reversing rod is located at the bending part of the angle limit block. The angle limit block can limit the rotation angle of the connecting rod.

2. The automatic double traction machine for aluminum profiles according to claim 1, characterized in that: A vertical bearing frame is fixed to the free end of the cantilever, a clip shaft is horizontally installed on the bearing frame, the movable clip is sleeved on the clip shaft, and the movable clip can rotate around the clip shaft; the fixed clip is welded to the bottom of the bearing frame.

3. The automatic double traction machine for aluminum profiles according to claim 2, characterized in that: The cross section of the movable clamp is a concave arc structure, the free end of the movable clamp can press the aluminum profile downward, and a plurality of anti-slip serrations are provided on the bottom surface of the movable clamp; The fixed clip is a flat plate structure.

4. The automatic double traction machine for aluminum profiles according to claim 3, characterized in that: A counterweight is fixed at the bottom of the rotating arm, and the counterweight is located directly below the limiting rod.

5. The automatic double traction machine for aluminum profiles according to claim 4, characterized in that: The top of the limiting rod is inclined toward the free end of the rotating arm. When the cantilever is rotated to a direction parallel to the first guide rail, the limiting rod can abut against the front side wall of the first pressing plate or the second pressing plate on the left side.

6. The automatic double traction machine for aluminum profiles according to claim 5, characterized in that: A guide wheel is installed on the support seat, and a guide groove matching the first guide rail or the second guide rail is provided on the guide wheel. The first guide rail or the second guide rail is embedded in the guide groove, and the guide wheel can roll along the first guide rail or the second guide rail.

7. The automatic double traction machine for aluminum profiles according to claim 1, characterized in that: A cantilever limiting column is installed on the top surface of the support seat, and the cantilever limiting column can support the cantilever from the left side of the cantilever.

8. The automatic double traction machine for aluminum profiles according to claim 7, characterized in that: The cantilever is a cylindrical tube structure, and an arc-shaped limiting wall matching the cantilever is provided on the right side of the cantilever limiting column.

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